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Merge Official Source

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Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
This commit is contained in:
Tianling Shen
2024-09-21 13:58:15 +08:00
parent 4727c617a6 d0a2b3f824
commit a5003a46f3
867 changed files with 434 additions and 134102 deletions
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1
package/boot/uboot-envtools/files/mediatek_filogic
View File

@@ -117,6 +117,7 @@ openwrt,one)
ubootenv_add_ubi_default
;;
smartrg,sdg-8733|\
smartrg,sdg-8733a|\
smartrg,sdg-8734)
local envdev=$(find_mmc_part "u-boot-env" "mmcblk0")
ubootenv_add_uci_config "$envdev" "0x0" "0x8000" "0x8000"

1
package/boot/uboot-envtools/files/ramips
View File

@@ -77,7 +77,6 @@ h3c,tx1801-plus|\
h3c,tx1806|\
iptime,ax2004m|\
jcg,q20|\
jcg,q20-pb-boot|\
linksys,e7350|\
netgear,eax12|\
netgear,wax202|\

2
package/kernel/bpf-headers/Makefile
View File

@@ -13,7 +13,7 @@ include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=linux
PKG_PATCHVER:=5.15
PKG_PATCHVER:=6.6
# Manually include kernel version and hash from kernel details file
include $(INCLUDE_DIR)/kernel-$(PKG_PATCHVER)

4
package/kernel/bpf-headers/patches/100-support_hz_300.patch
View File

@@ -1,6 +1,6 @@
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2988,6 +2988,9 @@ choice
@@ -2820,6 +2820,9 @@ choice
config HZ_256
bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
@@ -10,7 +10,7 @@
config HZ_1000
bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
@@ -3039,6 +3042,7 @@ config HZ
@@ -2871,6 +2874,7 @@ config HZ
default 128 if HZ_128
default 250 if HZ_250
default 256 if HZ_256

30
package/kernel/bpf-headers/patches/101-linux-netlink-drop-NL_SET_ERR_MSG-for-kernel-modules.patch
View File

@@ -1,30 +0,0 @@
From 7ed95633bff19950069c348b94c9c13164a57a2a Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Wed, 18 Jan 2023 20:20:39 +0100
Subject: [PATCH] linux/netlink: drop NL_SET_ERR_MSG for kernel modules
We don't need NL_SET_ERR_MSG_MOD for bpf modules and we can drop it to
solve missing KBUILD_MODNAME define.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
include/linux/netlink.h | 3 ---
1 file changed, 3 deletions(-)
diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index 61b1c7f..93561fb 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -98,9 +98,6 @@ struct netlink_ext_ack {
__extack->_msg = __msg; \
} while (0)
-#define NL_SET_ERR_MSG_MOD(extack, msg) \
- NL_SET_ERR_MSG((extack), KBUILD_MODNAME ": " msg)
-
#define NL_SET_BAD_ATTR_POLICY(extack, attr, pol) do { \
if ((extack)) { \
(extack)->bad_attr = (attr); \
--
2.38.1

9
package/kernel/bpf-headers/patches/102-net-flow_offload-use-NL_SET_ERR_MSG-instead-of-NL_SE.patch
View File

@@ -12,11 +12,9 @@ Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
include/net/flow_offload.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
index 7a2b022..f17c485 100644
--- a/include/net/flow_offload.h
+++ b/include/net/flow_offload.h
@@ -321,7 +321,7 @@ flow_action_mixed_hw_stats_check(const struct flow_action *action,
@@ -376,7 +376,7 @@ flow_action_mixed_hw_stats_check(const s
flow_action_for_each(i, action_entry, action) {
if (i && action_entry->hw_stats != last_hw_stats) {
@@ -25,7 +23,7 @@ index 7a2b022..f17c485 100644
return false;
}
last_hw_stats = action_entry->hw_stats;
@@ -356,11 +356,11 @@ __flow_action_hw_stats_check(const struct flow_action *action,
@@ -411,11 +411,11 @@ __flow_action_hw_stats_check(const struc
if (!check_allow_bit &&
~action_entry->hw_stats & FLOW_ACTION_HW_STATS_ANY) {
@@ -39,6 +37,3 @@ index 7a2b022..f17c485 100644
return false;
}
return true;
--
2.38.1

6
package/network/config/qosify/Makefile
View File

@@ -11,9 +11,9 @@ include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=qosify
PKG_SOURCE_URL=$(PROJECT_GIT)/project/qosify.git
PKG_SOURCE_PROTO:=git
PKG_SOURCE_DATE:=2023-03-07
PKG_SOURCE_VERSION:=9a47ea4b683dd845ec94534fcd82d3117c9ab313
PKG_MIRROR_HASH:=3d97456dcd13f481beff9a87d939e4bd671577865ed7cfc11b00d6e40f3e5621
PKG_SOURCE_DATE:=2024-09-20
PKG_SOURCE_VERSION:=1501e0935175d713ad229d88a8401dbfddc0a6b4
PKG_MIRROR_HASH:=6d6e07285a6c46f040ba88555accc64c291837f9726944b9e41ec4efbaaf6c20
PKG_RELEASE:=1
PKG_LICENSE:=GPL-2.0

23
target/linux/armsr/patches-6.1/221-armsr-disable_gc_sections_armv7.patch
View File

@@ -1,23 +0,0 @@
From b77c0ecdc7915e5c5c515da1aa6cfaf6f4eb8351 Mon Sep 17 00:00:00 2001
From: Mathew McBride <matt@traverse.com.au>
Date: Wed, 28 Sep 2022 16:39:31 +1000
Subject: [PATCH] arm: disable code size reduction measures
(gc-sections,-f*-sections)
This interferes with the EFI boot stub on armv7l.
Signed-off-by: Mathew McBride <matt@traverse.com.au>
---
arch/arm/Kconfig | 1 -
1 file changed, 1 deletion(-)
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -124,7 +124,6 @@ config ARM
select HAVE_VIRT_CPU_ACCOUNTING_GEN
select IRQ_FORCED_THREADING
select LOCK_MM_AND_FIND_VMA
- select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
select MODULES_USE_ELF_REL
select NEED_DMA_MAP_STATE
select OF_EARLY_FLATTREE if OF

44
target/linux/armsr/patches-6.1/701-v6.2-0001-net-dpaa2-eth-don-t-use-ENOTSUPP-error-code.patch
View File

@@ -1,44 +0,0 @@
From f3763a0c1b07273218cbf5886bdf8df9df501111 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:10 +0200
Subject: [PATCH 03/14] net: dpaa2-eth: don't use -ENOTSUPP error code
dpaa2_eth_setup_dpni() is called from the probe path and
dpaa2_eth_set_link_ksettings() is propagated to user space.
include/linux/errno.h says that ENOTSUPP is "Defined for the NFSv3
protocol". Conventional wisdom has it to not use it in networking
drivers. Replace it with -EOPNOTSUPP.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 2 +-
drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -3618,7 +3618,7 @@ static int dpaa2_eth_setup_dpni(struct f
dev_err(dev, "DPNI version %u.%u not supported, need >= %u.%u\n",
priv->dpni_ver_major, priv->dpni_ver_minor,
DPNI_VER_MAJOR, DPNI_VER_MINOR);
- err = -ENOTSUPP;
+ err = -EOPNOTSUPP;
goto close;
}
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
@@ -118,7 +118,7 @@ dpaa2_eth_set_link_ksettings(struct net_
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
if (!dpaa2_eth_is_type_phy(priv))
- return -ENOTSUPP;
+ return -EOPNOTSUPP;
return phylink_ethtool_ksettings_set(priv->mac->phylink, link_settings);
}

99
target/linux/armsr/patches-6.1/701-v6.2-0002-net-dpaa2-replace-dpaa2_mac_is_type_fixed-with-dpaa2.patch
View File

@@ -1,99 +0,0 @@
From 022a11062261dc4703da846d3bf4d194ef6bebf5 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:11 +0200
Subject: [PATCH 04/14] net: dpaa2: replace dpaa2_mac_is_type_fixed() with
dpaa2_mac_is_type_phy()
dpaa2_mac_is_type_fixed() is a header with no implementation and no
callers, which is referenced from the documentation though. It can be
deleted.
On the other hand, it would be useful to reuse the code between
dpaa2_eth_is_type_phy() and dpaa2_switch_port_is_type_phy(). That common
code should be called dpaa2_mac_is_type_phy(), so let's create that.
The removal and the addition are merged into the same patch because,
in fact, is_type_phy() is the logical opposite of is_type_fixed().
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
.../ethernet/freescale/dpaa2/mac-phy-support.rst | 9 ++++++---
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h | 7 +------
drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h | 10 ++++++++--
drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h | 7 +------
4 files changed, 16 insertions(+), 17 deletions(-)
--- a/Documentation/networking/device_drivers/ethernet/freescale/dpaa2/mac-phy-support.rst
+++ b/Documentation/networking/device_drivers/ethernet/freescale/dpaa2/mac-phy-support.rst
@@ -181,10 +181,13 @@ when necessary using the below listed AP
- int dpaa2_mac_connect(struct dpaa2_mac *mac);
- void dpaa2_mac_disconnect(struct dpaa2_mac *mac);
-A phylink integration is necessary only when the partner DPMAC is not of TYPE_FIXED.
-One can check for this condition using the below API::
+A phylink integration is necessary only when the partner DPMAC is not of
+``TYPE_FIXED``. This means it is either of ``TYPE_PHY``, or of
+``TYPE_BACKPLANE`` (the difference being the two that in the ``TYPE_BACKPLANE``
+mode, the MC firmware does not access the PCS registers). One can check for
+this condition using the following helper::
- - bool dpaa2_mac_is_type_fixed(struct fsl_mc_device *dpmac_dev,struct fsl_mc_io *mc_io);
+ - static inline bool dpaa2_mac_is_type_phy(struct dpaa2_mac *mac);
Before connection to a MAC, the caller must allocate and populate the
dpaa2_mac structure with the associated net_device, a pointer to the MC portal
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
@@ -733,12 +733,7 @@ static inline unsigned int dpaa2_eth_rx_
static inline bool dpaa2_eth_is_type_phy(struct dpaa2_eth_priv *priv)
{
- if (priv->mac &&
- (priv->mac->attr.link_type == DPMAC_LINK_TYPE_PHY ||
- priv->mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE))
- return true;
-
- return false;
+ return dpaa2_mac_is_type_phy(priv->mac);
}
static inline bool dpaa2_eth_has_mac(struct dpaa2_eth_priv *priv)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h
@@ -30,8 +30,14 @@ struct dpaa2_mac {
struct phy *serdes_phy;
};
-bool dpaa2_mac_is_type_fixed(struct fsl_mc_device *dpmac_dev,
- struct fsl_mc_io *mc_io);
+static inline bool dpaa2_mac_is_type_phy(struct dpaa2_mac *mac)
+{
+ if (!mac)
+ return false;
+
+ return mac->attr.link_type == DPMAC_LINK_TYPE_PHY ||
+ mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE;
+}
int dpaa2_mac_open(struct dpaa2_mac *mac);
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h
@@ -230,12 +230,7 @@ static inline bool dpaa2_switch_supports
static inline bool
dpaa2_switch_port_is_type_phy(struct ethsw_port_priv *port_priv)
{
- if (port_priv->mac &&
- (port_priv->mac->attr.link_type == DPMAC_LINK_TYPE_PHY ||
- port_priv->mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE))
- return true;
-
- return false;
+ return dpaa2_mac_is_type_phy(port_priv->mac);
}
static inline bool dpaa2_switch_port_has_mac(struct ethsw_port_priv *port_priv)

88
target/linux/armsr/patches-6.1/701-v6.2-0003-net-dpaa2-mac-absorb-phylink_start-call-into-dpaa2_m.patch
View File

@@ -1,88 +0,0 @@
From 97c07369ab8bf9895e05d4b468f18e6567263154 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:12 +0200
Subject: [PATCH 05/14] net: dpaa2-mac: absorb phylink_start() call into
dpaa2_mac_start()
The phylink handling is intended to be hidden inside the dpaa2_mac
object. Move the phylink_start() call into dpaa2_mac_start(), and
phylink_stop() into dpaa2_mac_stop().
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 5 +----
drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c | 8 ++++++++
drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c | 5 +----
3 files changed, 10 insertions(+), 8 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -2083,10 +2083,8 @@ static int dpaa2_eth_open(struct net_dev
goto enable_err;
}
- if (dpaa2_eth_is_type_phy(priv)) {
+ if (dpaa2_eth_is_type_phy(priv))
dpaa2_mac_start(priv->mac);
- phylink_start(priv->mac->phylink);
- }
return 0;
@@ -2160,7 +2158,6 @@ static int dpaa2_eth_stop(struct net_dev
int retries = 10;
if (dpaa2_eth_is_type_phy(priv)) {
- phylink_stop(priv->mac->phylink);
dpaa2_mac_stop(priv->mac);
} else {
netif_tx_stop_all_queues(net_dev);
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
@@ -336,12 +336,20 @@ static void dpaa2_mac_set_supported_inte
void dpaa2_mac_start(struct dpaa2_mac *mac)
{
+ ASSERT_RTNL();
+
if (mac->serdes_phy)
phy_power_on(mac->serdes_phy);
+
+ phylink_start(mac->phylink);
}
void dpaa2_mac_stop(struct dpaa2_mac *mac)
{
+ ASSERT_RTNL();
+
+ phylink_stop(mac->phylink);
+
if (mac->serdes_phy)
phy_power_off(mac->serdes_phy);
}
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -703,10 +703,8 @@ static int dpaa2_switch_port_open(struct
dpaa2_switch_enable_ctrl_if_napi(ethsw);
- if (dpaa2_switch_port_is_type_phy(port_priv)) {
+ if (dpaa2_switch_port_is_type_phy(port_priv))
dpaa2_mac_start(port_priv->mac);
- phylink_start(port_priv->mac->phylink);
- }
return 0;
}
@@ -718,7 +716,6 @@ static int dpaa2_switch_port_stop(struct
int err;
if (dpaa2_switch_port_is_type_phy(port_priv)) {
- phylink_stop(port_priv->mac->phylink);
dpaa2_mac_stop(port_priv->mac);
} else {
netif_tx_stop_all_queues(netdev);

50
target/linux/armsr/patches-6.1/701-v6.2-0004-net-dpaa2-mac-remove-defensive-check-in-dpaa2_mac_di.patch
View File

@@ -1,50 +0,0 @@
From 095ef388f714d622aa503fcccf20dc4095b72762 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:13 +0200
Subject: [PATCH 06/14] net: dpaa2-mac: remove defensive check in
dpaa2_mac_disconnect()
dpaa2_mac_disconnect() will only be called with a NULL mac->phylink if
dpaa2_mac_connect() failed, or was never called.
The callers are these:
dpaa2_eth_disconnect_mac():
if (dpaa2_eth_is_type_phy(priv))
dpaa2_mac_disconnect(priv->mac);
dpaa2_switch_port_disconnect_mac():
if (dpaa2_switch_port_is_type_phy(port_priv))
dpaa2_mac_disconnect(port_priv->mac);
priv->mac can be NULL, but in that case, dpaa2_eth_is_type_phy() returns
false, and dpaa2_mac_disconnect() is never called. Similar for
dpaa2-switch.
When priv->mac is non-NULL, it means that dpaa2_mac_connect() returned
zero (success), and therefore, priv->mac->phylink is also a valid
pointer.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c | 3 ---
1 file changed, 3 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
@@ -446,9 +446,6 @@ err_pcs_destroy:
void dpaa2_mac_disconnect(struct dpaa2_mac *mac)
{
- if (!mac->phylink)
- return;
-
phylink_disconnect_phy(mac->phylink);
phylink_destroy(mac->phylink);
dpaa2_pcs_destroy(mac);

101
target/linux/armsr/patches-6.1/701-v6.2-0005-net-dpaa2-eth-assign-priv-mac-after-dpaa2_mac_connec.patch
View File

@@ -1,101 +0,0 @@
From 06efc9b8a1360cad83cae6e71558e5458cc1fbf3 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:14 +0200
Subject: [PATCH 07/14] net: dpaa2-eth: assign priv->mac after
dpaa2_mac_connect() call
There are 2 requirements for correct code:
- Any time the driver accesses the priv->mac pointer at runtime, it
either holds NULL to indicate a DPNI-DPNI connection (or unconnected
DPNI), or a struct dpaa2_mac whose phylink instance was fully
initialized (created and connected to the PHY). No changes are made to
priv->mac while it is being used. Currently, rtnl_lock() watches over
the call to dpaa2_eth_connect_mac(), so it serves the purpose of
serializing this with all readers of priv->mac.
- dpaa2_mac_connect() should run unlocked, because inside it are 2
phylink calls with incompatible locking requirements: phylink_create()
requires that the rtnl_mutex isn't held, and phylink_fwnode_phy_connect()
requires that the rtnl_mutex is held. The only way to solve those
contradictory requirements is to let dpaa2_mac_connect() take
rtnl_lock() when it needs to.
To solve both requirements, we need to identify the writer side of the
priv->mac pointer, which can be wrapped in a mutex private to the driver
in a future patch. The dpaa2_mac_connect() cannot be part of the writer
side critical section, because of an AB/BA deadlock with rtnl_lock().
So the strategy needs to be that where we prepare the DPMAC by calling
dpaa2_mac_connect(), and only make priv->mac point to it once it's fully
prepared. This ensures that the writer side critical section has the
absolute minimum surface it can.
The reverse strategy is adopted in the dpaa2_eth_disconnect_mac() code
path. This makes sure that priv->mac is NULL when we start tearing down
the DPMAC that we disconnected from, and concurrent code will simply not
see it.
No locking changes in this patch (concurrent code is still blocked by
the rtnl_mutex).
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
.../net/ethernet/freescale/dpaa2/dpaa2-eth.c | 21 +++++++++++--------
1 file changed, 12 insertions(+), 9 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -4448,9 +4448,8 @@ static int dpaa2_eth_connect_mac(struct
err = dpaa2_mac_open(mac);
if (err)
goto err_free_mac;
- priv->mac = mac;
- if (dpaa2_eth_is_type_phy(priv)) {
+ if (dpaa2_mac_is_type_phy(mac)) {
err = dpaa2_mac_connect(mac);
if (err && err != -EPROBE_DEFER)
netdev_err(priv->net_dev, "Error connecting to the MAC endpoint: %pe",
@@ -4459,11 +4458,12 @@ static int dpaa2_eth_connect_mac(struct
goto err_close_mac;
}
+ priv->mac = mac;
+
return 0;
err_close_mac:
dpaa2_mac_close(mac);
- priv->mac = NULL;
err_free_mac:
kfree(mac);
return err;
@@ -4471,15 +4471,18 @@ err_free_mac:
static void dpaa2_eth_disconnect_mac(struct dpaa2_eth_priv *priv)
{
- if (dpaa2_eth_is_type_phy(priv))
- dpaa2_mac_disconnect(priv->mac);
+ struct dpaa2_mac *mac = priv->mac;
+
+ priv->mac = NULL;
- if (!dpaa2_eth_has_mac(priv))
+ if (!mac)
return;
- dpaa2_mac_close(priv->mac);
- kfree(priv->mac);
- priv->mac = NULL;
+ if (dpaa2_mac_is_type_phy(mac))
+ dpaa2_mac_disconnect(mac);
+
+ dpaa2_mac_close(mac);
+ kfree(mac);
}
static irqreturn_t dpni_irq0_handler_thread(int irq_num, void *arg)

73
target/linux/armsr/patches-6.1/701-v6.2-0006-net-dpaa2-switch-assign-port_priv-mac-after-dpaa2_ma.patch
View File

@@ -1,73 +0,0 @@
From a5e7f7e277bd4403c45c1c7922d56d0eb08dbc7c Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:15 +0200
Subject: [PATCH 08/14] net: dpaa2-switch: assign port_priv->mac after
dpaa2_mac_connect() call
The dpaa2-switch has the exact same locking requirements when connected
to a DPMAC, so it needs port_priv->mac to always point either to NULL,
or to a DPMAC with a fully initialized phylink instance.
Make the same preparatory change in the dpaa2-switch driver as in the
dpaa2-eth one.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
.../ethernet/freescale/dpaa2/dpaa2-switch.c | 21 +++++++++++--------
1 file changed, 12 insertions(+), 9 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -1450,9 +1450,8 @@ static int dpaa2_switch_port_connect_mac
err = dpaa2_mac_open(mac);
if (err)
goto err_free_mac;
- port_priv->mac = mac;
- if (dpaa2_switch_port_is_type_phy(port_priv)) {
+ if (dpaa2_mac_is_type_phy(mac)) {
err = dpaa2_mac_connect(mac);
if (err) {
netdev_err(port_priv->netdev,
@@ -1462,11 +1461,12 @@ static int dpaa2_switch_port_connect_mac
}
}
+ port_priv->mac = mac;
+
return 0;
err_close_mac:
dpaa2_mac_close(mac);
- port_priv->mac = NULL;
err_free_mac:
kfree(mac);
return err;
@@ -1474,15 +1474,18 @@ err_free_mac:
static void dpaa2_switch_port_disconnect_mac(struct ethsw_port_priv *port_priv)
{
- if (dpaa2_switch_port_is_type_phy(port_priv))
- dpaa2_mac_disconnect(port_priv->mac);
+ struct dpaa2_mac *mac = port_priv->mac;
+
+ port_priv->mac = NULL;
- if (!dpaa2_switch_port_has_mac(port_priv))
+ if (!mac)
return;
- dpaa2_mac_close(port_priv->mac);
- kfree(port_priv->mac);
- port_priv->mac = NULL;
+ if (dpaa2_mac_is_type_phy(mac))
+ dpaa2_mac_disconnect(mac);
+
+ dpaa2_mac_close(mac);
+ kfree(mac);
}
static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg)

111
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View File

@@ -1,111 +0,0 @@
From ce44b6ed9ee65efa9b3025552c513842eabcab88 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:16 +0200
Subject: [PATCH 09/14] net: dpaa2: publish MAC stringset to ethtool -S even if
MAC is missing
DPNIs and DPSW objects can connect and disconnect at runtime from DPMAC
objects on the same fsl-mc bus. The DPMAC object also holds "ethtool -S"
unstructured counters. Those counters are only shown for the entity
owning the netdev (DPNI, DPSW) if it's connected to a DPMAC.
The ethtool stringset code path is split into multiple callbacks, but
currently, connecting and disconnecting the DPMAC takes the rtnl_lock().
This blocks the entire ethtool code path from running, see
ethnl_default_doit() -> rtnl_lock() -> ops->prepare_data() ->
strset_prepare_data().
This is going to be a problem if we are going to no longer require
rtnl_lock() when connecting/disconnecting the DPMAC, because the DPMAC
could appear between ops->get_sset_count() and ops->get_strings().
If it appears out of the blue, we will provide a stringset into an array
that was dimensioned thinking the DPMAC wouldn't be there => array
accessed out of bounds.
There isn't really a good way to work around that, and I don't want to
put too much pressure on the ethtool framework by playing locking games.
Just make the DPMAC counters be always available. They'll be zeroes if
the DPNI or DPSW isn't connected to a DPMAC.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c | 12 +++---------
.../ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c | 11 ++---------
2 files changed, 5 insertions(+), 18 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
@@ -186,7 +186,6 @@ static int dpaa2_eth_set_pauseparam(stru
static void dpaa2_eth_get_strings(struct net_device *netdev, u32 stringset,
u8 *data)
{
- struct dpaa2_eth_priv *priv = netdev_priv(netdev);
u8 *p = data;
int i;
@@ -200,22 +199,17 @@ static void dpaa2_eth_get_strings(struct
strscpy(p, dpaa2_ethtool_extras[i], ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
}
- if (dpaa2_eth_has_mac(priv))
- dpaa2_mac_get_strings(p);
+ dpaa2_mac_get_strings(p);
break;
}
}
static int dpaa2_eth_get_sset_count(struct net_device *net_dev, int sset)
{
- int num_ss_stats = DPAA2_ETH_NUM_STATS + DPAA2_ETH_NUM_EXTRA_STATS;
- struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
-
switch (sset) {
case ETH_SS_STATS: /* ethtool_get_stats(), ethtool_get_drvinfo() */
- if (dpaa2_eth_has_mac(priv))
- num_ss_stats += dpaa2_mac_get_sset_count();
- return num_ss_stats;
+ return DPAA2_ETH_NUM_STATS + DPAA2_ETH_NUM_EXTRA_STATS +
+ dpaa2_mac_get_sset_count();
default:
return -EOPNOTSUPP;
}
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
@@ -145,14 +145,9 @@ dpaa2_switch_set_link_ksettings(struct n
static int
dpaa2_switch_ethtool_get_sset_count(struct net_device *netdev, int sset)
{
- struct ethsw_port_priv *port_priv = netdev_priv(netdev);
- int num_ss_stats = DPAA2_SWITCH_NUM_COUNTERS;
-
switch (sset) {
case ETH_SS_STATS:
- if (port_priv->mac)
- num_ss_stats += dpaa2_mac_get_sset_count();
- return num_ss_stats;
+ return DPAA2_SWITCH_NUM_COUNTERS + dpaa2_mac_get_sset_count();
default:
return -EOPNOTSUPP;
}
@@ -161,7 +156,6 @@ dpaa2_switch_ethtool_get_sset_count(stru
static void dpaa2_switch_ethtool_get_strings(struct net_device *netdev,
u32 stringset, u8 *data)
{
- struct ethsw_port_priv *port_priv = netdev_priv(netdev);
u8 *p = data;
int i;
@@ -172,8 +166,7 @@ static void dpaa2_switch_ethtool_get_str
ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
}
- if (port_priv->mac)
- dpaa2_mac_get_strings(p);
+ dpaa2_mac_get_strings(p);
break;
}
}

28
target/linux/armsr/patches-6.1/701-v6.2-0008-net-dpaa2-switch-replace-direct-MAC-access-with-dpaa.patch
View File

@@ -1,28 +0,0 @@
From c838d9fd7e6ba9ddd6006bf0a296396266e9f121 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:17 +0200
Subject: [PATCH 10/14] net: dpaa2-switch replace direct MAC access with
dpaa2_switch_port_has_mac()
The helper function will gain a lockdep annotation in a future patch.
Make sure to benefit from it.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
@@ -189,7 +189,7 @@ static void dpaa2_switch_ethtool_get_sta
dpaa2_switch_ethtool_counters[i].name, err);
}
- if (port_priv->mac)
+ if (dpaa2_switch_port_has_mac(port_priv))
dpaa2_mac_get_ethtool_stats(port_priv->mac, data + i);
}

93
target/linux/armsr/patches-6.1/701-v6.2-0009-net-dpaa2-eth-connect-to-MAC-before-requesting-the-e.patch
View File

@@ -1,93 +0,0 @@
From e0ea63162cb5f1ca7f844d6ef5fc4079448ee2d5 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:18 +0200
Subject: [PATCH 11/14] net: dpaa2-eth: connect to MAC before requesting the
"endpoint changed" IRQ
dpaa2_eth_connect_mac() is called both from dpaa2_eth_probe() and from
dpni_irq0_handler_thread().
It could happen that the DPNI gets connected to a DPMAC on the fsl-mc
bus exactly during probe, as soon as the "endpoint change" interrupt is
requested in dpaa2_eth_setup_irqs(). This will cause the
dpni_irq0_handler_thread() to register a phylink instance for that DPMAC.
Then, the probing function will also try to register a phylink instance
for the same DPMAC, operation which should fail (and this will fail the
probing of the driver).
Reorder dpaa2_eth_setup_irqs() and dpaa2_eth_connect_mac(), such that
dpni_irq0_handler_thread() never races with the DPMAC-related portion of
the probing path.
Also reorder dpaa2_eth_disconnect_mac() to be in the mirror position of
dpaa2_eth_connect_mac() in the teardown path.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
.../net/ethernet/freescale/dpaa2/dpaa2-eth.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -4715,6 +4715,10 @@ static int dpaa2_eth_probe(struct fsl_mc
}
#endif
+ err = dpaa2_eth_connect_mac(priv);
+ if (err)
+ goto err_connect_mac;
+
err = dpaa2_eth_setup_irqs(dpni_dev);
if (err) {
netdev_warn(net_dev, "Failed to set link interrupt, fall back to polling\n");
@@ -4727,10 +4731,6 @@ static int dpaa2_eth_probe(struct fsl_mc
priv->do_link_poll = true;
}
- err = dpaa2_eth_connect_mac(priv);
- if (err)
- goto err_connect_mac;
-
err = dpaa2_eth_dl_alloc(priv);
if (err)
goto err_dl_register;
@@ -4766,13 +4766,13 @@ err_dl_port_add:
err_dl_trap_register:
dpaa2_eth_dl_free(priv);
err_dl_register:
- dpaa2_eth_disconnect_mac(priv);
-err_connect_mac:
if (priv->do_link_poll)
kthread_stop(priv->poll_thread);
else
fsl_mc_free_irqs(dpni_dev);
err_poll_thread:
+ dpaa2_eth_disconnect_mac(priv);
+err_connect_mac:
dpaa2_eth_free_rings(priv);
err_alloc_rings:
err_csum:
@@ -4820,9 +4820,6 @@ static int dpaa2_eth_remove(struct fsl_m
#endif
unregister_netdev(net_dev);
- rtnl_lock();
- dpaa2_eth_disconnect_mac(priv);
- rtnl_unlock();
dpaa2_eth_dl_port_del(priv);
dpaa2_eth_dl_traps_unregister(priv);
@@ -4833,6 +4830,9 @@ static int dpaa2_eth_remove(struct fsl_m
else
fsl_mc_free_irqs(ls_dev);
+ rtnl_lock();
+ dpaa2_eth_disconnect_mac(priv);
+ rtnl_unlock();
dpaa2_eth_free_rings(priv);
free_percpu(priv->fd);
free_percpu(priv->sgt_cache);

320
target/linux/armsr/patches-6.1/701-v6.2-0010-net-dpaa2-eth-serialize-changes-to-priv-mac-with-a-m.patch
View File

@@ -1,320 +0,0 @@
From 5e448a17dfa2e95166534df7f677a3694ef6187d Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:19 +0200
Subject: [PATCH 12/14] net: dpaa2-eth: serialize changes to priv->mac with a
mutex
The dpaa2 architecture permits dynamic connections between objects on
the fsl-mc bus, specifically between a DPNI object (represented by a
struct net_device) and a DPMAC object (represented by a struct phylink).
The DPNI driver is notified when those connections are created/broken
through the dpni_irq0_handler_thread() method. To ensure that ethtool
operations, as well as netdev up/down operations serialize with the
connection/disconnection of the DPNI with a DPMAC,
dpni_irq0_handler_thread() takes the rtnl_lock() to block those other
operations from taking place.
There is code called by dpaa2_mac_connect() which wants to acquire the
rtnl_mutex once again, see phylink_create() -> phylink_register_sfp() ->
sfp_bus_add_upstream() -> rtnl_lock(). So the strategy doesn't quite
work out, even though it's fairly simple.
Create a different strategy, where all code paths in the dpaa2-eth
driver access priv->mac only while they are holding priv->mac_lock.
The phylink instance is not created or connected to the PHY under the
priv->mac_lock, but only assigned to priv->mac then. This will eliminate
the reliance on the rtnl_mutex.
Add lockdep annotations and put comments where holding the lock is not
necessary, and priv->mac can be dereferenced freely.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
.../net/ethernet/freescale/dpaa2/dpaa2-eth.c | 43 ++++++++++++--
.../net/ethernet/freescale/dpaa2/dpaa2-eth.h | 6 ++
.../ethernet/freescale/dpaa2/dpaa2-ethtool.c | 58 +++++++++++++++----
3 files changed, 91 insertions(+), 16 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -2021,8 +2021,11 @@ static int dpaa2_eth_link_state_update(s
/* When we manage the MAC/PHY using phylink there is no need
* to manually update the netif_carrier.
+ * We can avoid locking because we are called from the "link changed"
+ * IRQ handler, which is the same as the "endpoint changed" IRQ handler
+ * (the writer to priv->mac), so we cannot race with it.
*/
- if (dpaa2_eth_is_type_phy(priv))
+ if (dpaa2_mac_is_type_phy(priv->mac))
goto out;
/* Chech link state; speed / duplex changes are not treated yet */
@@ -2061,6 +2064,8 @@ static int dpaa2_eth_open(struct net_dev
priv->dpbp_dev->obj_desc.id, priv->bpid);
}
+ mutex_lock(&priv->mac_lock);
+
if (!dpaa2_eth_is_type_phy(priv)) {
/* We'll only start the txqs when the link is actually ready;
* make sure we don't race against the link up notification,
@@ -2079,6 +2084,7 @@ static int dpaa2_eth_open(struct net_dev
err = dpni_enable(priv->mc_io, 0, priv->mc_token);
if (err < 0) {
+ mutex_unlock(&priv->mac_lock);
netdev_err(net_dev, "dpni_enable() failed\n");
goto enable_err;
}
@@ -2086,6 +2092,8 @@ static int dpaa2_eth_open(struct net_dev
if (dpaa2_eth_is_type_phy(priv))
dpaa2_mac_start(priv->mac);
+ mutex_unlock(&priv->mac_lock);
+
return 0;
enable_err:
@@ -2157,6 +2165,8 @@ static int dpaa2_eth_stop(struct net_dev
int dpni_enabled = 0;
int retries = 10;
+ mutex_lock(&priv->mac_lock);
+
if (dpaa2_eth_is_type_phy(priv)) {
dpaa2_mac_stop(priv->mac);
} else {
@@ -2164,6 +2174,8 @@ static int dpaa2_eth_stop(struct net_dev
netif_carrier_off(net_dev);
}
+ mutex_unlock(&priv->mac_lock);
+
/* On dpni_disable(), the MC firmware will:
* - stop MAC Rx and wait for all Rx frames to be enqueued to software
* - cut off WRIOP dequeues from egress FQs and wait until transmission
@@ -2489,12 +2501,20 @@ static int dpaa2_eth_ts_ioctl(struct net
static int dpaa2_eth_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct dpaa2_eth_priv *priv = netdev_priv(dev);
+ int err;
if (cmd == SIOCSHWTSTAMP)
return dpaa2_eth_ts_ioctl(dev, rq, cmd);
- if (dpaa2_eth_is_type_phy(priv))
- return phylink_mii_ioctl(priv->mac->phylink, rq, cmd);
+ mutex_lock(&priv->mac_lock);
+
+ if (dpaa2_eth_is_type_phy(priv)) {
+ err = phylink_mii_ioctl(priv->mac->phylink, rq, cmd);
+ mutex_unlock(&priv->mac_lock);
+ return err;
+ }
+
+ mutex_unlock(&priv->mac_lock);
return -EOPNOTSUPP;
}
@@ -4458,7 +4478,9 @@ static int dpaa2_eth_connect_mac(struct
goto err_close_mac;
}
+ mutex_lock(&priv->mac_lock);
priv->mac = mac;
+ mutex_unlock(&priv->mac_lock);
return 0;
@@ -4471,9 +4493,12 @@ err_free_mac:
static void dpaa2_eth_disconnect_mac(struct dpaa2_eth_priv *priv)
{
- struct dpaa2_mac *mac = priv->mac;
+ struct dpaa2_mac *mac;
+ mutex_lock(&priv->mac_lock);
+ mac = priv->mac;
priv->mac = NULL;
+ mutex_unlock(&priv->mac_lock);
if (!mac)
return;
@@ -4492,6 +4517,7 @@ static irqreturn_t dpni_irq0_handler_thr
struct fsl_mc_device *dpni_dev = to_fsl_mc_device(dev);
struct net_device *net_dev = dev_get_drvdata(dev);
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
+ bool had_mac;
int err;
err = dpni_get_irq_status(dpni_dev->mc_io, 0, dpni_dev->mc_handle,
@@ -4509,7 +4535,12 @@ static irqreturn_t dpni_irq0_handler_thr
dpaa2_eth_update_tx_fqids(priv);
rtnl_lock();
- if (dpaa2_eth_has_mac(priv))
+ /* We can avoid locking because the "endpoint changed" IRQ
+ * handler is the only one who changes priv->mac at runtime,
+ * so we are not racing with anyone.
+ */
+ had_mac = !!priv->mac;
+ if (had_mac)
dpaa2_eth_disconnect_mac(priv);
else
dpaa2_eth_connect_mac(priv);
@@ -4610,6 +4641,8 @@ static int dpaa2_eth_probe(struct fsl_mc
priv = netdev_priv(net_dev);
priv->net_dev = net_dev;
+ mutex_init(&priv->mac_lock);
+
priv->iommu_domain = iommu_get_domain_for_dev(dev);
priv->tx_tstamp_type = HWTSTAMP_TX_OFF;
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
@@ -580,6 +580,8 @@ struct dpaa2_eth_priv {
#endif
struct dpaa2_mac *mac;
+ /* Serializes changes to priv->mac */
+ struct mutex mac_lock;
struct workqueue_struct *dpaa2_ptp_wq;
struct work_struct tx_onestep_tstamp;
struct sk_buff_head tx_skbs;
@@ -733,11 +735,15 @@ static inline unsigned int dpaa2_eth_rx_
static inline bool dpaa2_eth_is_type_phy(struct dpaa2_eth_priv *priv)
{
+ lockdep_assert_held(&priv->mac_lock);
+
return dpaa2_mac_is_type_phy(priv->mac);
}
static inline bool dpaa2_eth_has_mac(struct dpaa2_eth_priv *priv)
{
+ lockdep_assert_held(&priv->mac_lock);
+
return priv->mac ? true : false;
}
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
@@ -86,11 +86,16 @@ static void dpaa2_eth_get_drvinfo(struct
static int dpaa2_eth_nway_reset(struct net_device *net_dev)
{
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
+ int err = -EOPNOTSUPP;
+
+ mutex_lock(&priv->mac_lock);
if (dpaa2_eth_is_type_phy(priv))
- return phylink_ethtool_nway_reset(priv->mac->phylink);
+ err = phylink_ethtool_nway_reset(priv->mac->phylink);
+
+ mutex_unlock(&priv->mac_lock);
- return -EOPNOTSUPP;
+ return err;
}
static int
@@ -98,10 +103,18 @@ dpaa2_eth_get_link_ksettings(struct net_
struct ethtool_link_ksettings *link_settings)
{
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
+ int err;
- if (dpaa2_eth_is_type_phy(priv))
- return phylink_ethtool_ksettings_get(priv->mac->phylink,
- link_settings);
+ mutex_lock(&priv->mac_lock);
+
+ if (dpaa2_eth_is_type_phy(priv)) {
+ err = phylink_ethtool_ksettings_get(priv->mac->phylink,
+ link_settings);
+ mutex_unlock(&priv->mac_lock);
+ return err;
+ }
+
+ mutex_unlock(&priv->mac_lock);
link_settings->base.autoneg = AUTONEG_DISABLE;
if (!(priv->link_state.options & DPNI_LINK_OPT_HALF_DUPLEX))
@@ -116,11 +129,17 @@ dpaa2_eth_set_link_ksettings(struct net_
const struct ethtool_link_ksettings *link_settings)
{
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
+ int err = -EOPNOTSUPP;
- if (!dpaa2_eth_is_type_phy(priv))
- return -EOPNOTSUPP;
+ mutex_lock(&priv->mac_lock);
+
+ if (dpaa2_eth_is_type_phy(priv))
+ err = phylink_ethtool_ksettings_set(priv->mac->phylink,
+ link_settings);
- return phylink_ethtool_ksettings_set(priv->mac->phylink, link_settings);
+ mutex_unlock(&priv->mac_lock);
+
+ return err;
}
static void dpaa2_eth_get_pauseparam(struct net_device *net_dev,
@@ -129,11 +148,16 @@ static void dpaa2_eth_get_pauseparam(str
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
u64 link_options = priv->link_state.options;
+ mutex_lock(&priv->mac_lock);
+
if (dpaa2_eth_is_type_phy(priv)) {
phylink_ethtool_get_pauseparam(priv->mac->phylink, pause);
+ mutex_unlock(&priv->mac_lock);
return;
}
+ mutex_unlock(&priv->mac_lock);
+
pause->rx_pause = dpaa2_eth_rx_pause_enabled(link_options);
pause->tx_pause = dpaa2_eth_tx_pause_enabled(link_options);
pause->autoneg = AUTONEG_DISABLE;
@@ -152,9 +176,17 @@ static int dpaa2_eth_set_pauseparam(stru
return -EOPNOTSUPP;
}
- if (dpaa2_eth_is_type_phy(priv))
- return phylink_ethtool_set_pauseparam(priv->mac->phylink,
- pause);
+ mutex_lock(&priv->mac_lock);
+
+ if (dpaa2_eth_is_type_phy(priv)) {
+ err = phylink_ethtool_set_pauseparam(priv->mac->phylink,
+ pause);
+ mutex_unlock(&priv->mac_lock);
+ return err;
+ }
+
+ mutex_unlock(&priv->mac_lock);
+
if (pause->autoneg)
return -EOPNOTSUPP;
@@ -307,8 +339,12 @@ static void dpaa2_eth_get_ethtool_stats(
}
*(data + i++) = buf_cnt;
+ mutex_lock(&priv->mac_lock);
+
if (dpaa2_eth_has_mac(priv))
dpaa2_mac_get_ethtool_stats(priv->mac, data + i);
+
+ mutex_unlock(&priv->mac_lock);
}
static int dpaa2_eth_prep_eth_rule(struct ethhdr *eth_value, struct ethhdr *eth_mask,

203
target/linux/armsr/patches-6.1/701-v6.2-0011-net-dpaa2-switch-serialize-changes-to-priv-mac-with.patch
View File

@@ -1,203 +0,0 @@
From 80d12452a5f160c39d63efc1be07df36f9d07133 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:20 +0200
Subject: [PATCH 13/14] net: dpaa2-switch: serialize changes to priv->mac with
a mutex
The dpaa2-switch driver uses a DPMAC in the same way as the dpaa2-eth
driver, so we need to duplicate the locking solution established by the
previous change to the switch driver as well.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
.../freescale/dpaa2/dpaa2-switch-ethtool.c | 32 +++++++++++++++----
.../ethernet/freescale/dpaa2/dpaa2-switch.c | 31 ++++++++++++++++--
.../ethernet/freescale/dpaa2/dpaa2-switch.h | 2 ++
3 files changed, 55 insertions(+), 10 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
@@ -60,11 +60,18 @@ dpaa2_switch_get_link_ksettings(struct n
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
struct dpsw_link_state state = {0};
- int err = 0;
+ int err;
- if (dpaa2_switch_port_is_type_phy(port_priv))
- return phylink_ethtool_ksettings_get(port_priv->mac->phylink,
- link_ksettings);
+ mutex_lock(&port_priv->mac_lock);
+
+ if (dpaa2_switch_port_is_type_phy(port_priv)) {
+ err = phylink_ethtool_ksettings_get(port_priv->mac->phylink,
+ link_ksettings);
+ mutex_unlock(&port_priv->mac_lock);
+ return err;
+ }
+
+ mutex_unlock(&port_priv->mac_lock);
err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
@@ -99,9 +106,16 @@ dpaa2_switch_set_link_ksettings(struct n
bool if_running;
int err = 0, ret;
- if (dpaa2_switch_port_is_type_phy(port_priv))
- return phylink_ethtool_ksettings_set(port_priv->mac->phylink,
- link_ksettings);
+ mutex_lock(&port_priv->mac_lock);
+
+ if (dpaa2_switch_port_is_type_phy(port_priv)) {
+ err = phylink_ethtool_ksettings_set(port_priv->mac->phylink,
+ link_ksettings);
+ mutex_unlock(&port_priv->mac_lock);
+ return err;
+ }
+
+ mutex_unlock(&port_priv->mac_lock);
/* Interface needs to be down to change link settings */
if_running = netif_running(netdev);
@@ -189,8 +203,12 @@ static void dpaa2_switch_ethtool_get_sta
dpaa2_switch_ethtool_counters[i].name, err);
}
+ mutex_lock(&port_priv->mac_lock);
+
if (dpaa2_switch_port_has_mac(port_priv))
dpaa2_mac_get_ethtool_stats(port_priv->mac, data + i);
+
+ mutex_unlock(&port_priv->mac_lock);
}
const struct ethtool_ops dpaa2_switch_port_ethtool_ops = {
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -603,8 +603,11 @@ static int dpaa2_switch_port_link_state_
/* When we manage the MAC/PHY using phylink there is no need
* to manually update the netif_carrier.
+ * We can avoid locking because we are called from the "link changed"
+ * IRQ handler, which is the same as the "endpoint changed" IRQ handler
+ * (the writer to port_priv->mac), so we cannot race with it.
*/
- if (dpaa2_switch_port_is_type_phy(port_priv))
+ if (dpaa2_mac_is_type_phy(port_priv->mac))
return 0;
/* Interrupts are received even though no one issued an 'ifconfig up'
@@ -684,6 +687,8 @@ static int dpaa2_switch_port_open(struct
struct ethsw_core *ethsw = port_priv->ethsw_data;
int err;
+ mutex_lock(&port_priv->mac_lock);
+
if (!dpaa2_switch_port_is_type_phy(port_priv)) {
/* Explicitly set carrier off, otherwise
* netif_carrier_ok() will return true and cause 'ip link show'
@@ -697,6 +702,7 @@ static int dpaa2_switch_port_open(struct
port_priv->ethsw_data->dpsw_handle,
port_priv->idx);
if (err) {
+ mutex_unlock(&port_priv->mac_lock);
netdev_err(netdev, "dpsw_if_enable err %d\n", err);
return err;
}
@@ -706,6 +712,8 @@ static int dpaa2_switch_port_open(struct
if (dpaa2_switch_port_is_type_phy(port_priv))
dpaa2_mac_start(port_priv->mac);
+ mutex_unlock(&port_priv->mac_lock);
+
return 0;
}
@@ -715,6 +723,8 @@ static int dpaa2_switch_port_stop(struct
struct ethsw_core *ethsw = port_priv->ethsw_data;
int err;
+ mutex_lock(&port_priv->mac_lock);
+
if (dpaa2_switch_port_is_type_phy(port_priv)) {
dpaa2_mac_stop(port_priv->mac);
} else {
@@ -722,6 +732,8 @@ static int dpaa2_switch_port_stop(struct
netif_carrier_off(netdev);
}
+ mutex_unlock(&port_priv->mac_lock);
+
err = dpsw_if_disable(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx);
@@ -1461,7 +1473,9 @@ static int dpaa2_switch_port_connect_mac
}
}
+ mutex_lock(&port_priv->mac_lock);
port_priv->mac = mac;
+ mutex_unlock(&port_priv->mac_lock);
return 0;
@@ -1474,9 +1488,12 @@ err_free_mac:
static void dpaa2_switch_port_disconnect_mac(struct ethsw_port_priv *port_priv)
{
- struct dpaa2_mac *mac = port_priv->mac;
+ struct dpaa2_mac *mac;
+ mutex_lock(&port_priv->mac_lock);
+ mac = port_priv->mac;
port_priv->mac = NULL;
+ mutex_unlock(&port_priv->mac_lock);
if (!mac)
return;
@@ -1495,6 +1512,7 @@ static irqreturn_t dpaa2_switch_irq0_han
struct ethsw_port_priv *port_priv;
u32 status = ~0;
int err, if_id;
+ bool had_mac;
err = dpsw_get_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle,
DPSW_IRQ_INDEX_IF, &status);
@@ -1513,7 +1531,12 @@ static irqreturn_t dpaa2_switch_irq0_han
if (status & DPSW_IRQ_EVENT_ENDPOINT_CHANGED) {
rtnl_lock();
- if (dpaa2_switch_port_has_mac(port_priv))
+ /* We can avoid locking because the "endpoint changed" IRQ
+ * handler is the only one who changes priv->mac at runtime,
+ * so we are not racing with anyone.
+ */
+ had_mac = !!port_priv->mac;
+ if (had_mac)
dpaa2_switch_port_disconnect_mac(port_priv);
else
dpaa2_switch_port_connect_mac(port_priv);
@@ -3250,6 +3273,8 @@ static int dpaa2_switch_probe_port(struc
port_priv->netdev = port_netdev;
port_priv->ethsw_data = ethsw;
+ mutex_init(&port_priv->mac_lock);
+
port_priv->idx = port_idx;
port_priv->stp_state = BR_STATE_FORWARDING;
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h
@@ -161,6 +161,8 @@ struct ethsw_port_priv {
struct dpaa2_switch_filter_block *filter_block;
struct dpaa2_mac *mac;
+ /* Protects against changes to port_priv->mac */
+ struct mutex mac_lock;
};
/* Switch data */

113
target/linux/armsr/patches-6.1/701-v6.2-0012-net-dpaa2-mac-move-rtnl_lock-only-around-phylink.patch
View File

@@ -1,113 +0,0 @@
From 4ea2faf5bb13d9ba9f07e996d495c4cbe34a4236 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:21 +0200
Subject: [PATCH 14/14] net: dpaa2-mac: move rtnl_lock() only around
phylink_{,dis}connect_phy()
After the introduction of a private mac_lock that serializes access to
priv->mac (and port_priv->mac in the switch), the only remaining purpose
of rtnl_lock() is to satisfy the locking requirements of
phylink_fwnode_phy_connect() and phylink_disconnect_phy().
But the functions these live in, dpaa2_mac_connect() and
dpaa2_mac_disconnect(), have contradictory locking requirements.
While phylink_fwnode_phy_connect() wants rtnl_lock() to be held,
phylink_create() wants it to not be held.
Move the rtnl_lock() from top-level (in the dpaa2-eth and dpaa2-switch
drivers) to only surround the phylink calls that require it, in the
dpaa2-mac library code.
This is possible because dpaa2_mac_connect() and dpaa2_mac_disconnect()
run unlocked, and there isn't any danger of an AB/BA deadlock between
the rtnl_mutex and other private locks.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 4 ----
drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c | 5 +++++
drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c | 4 ----
3 files changed, 5 insertions(+), 8 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -4534,7 +4534,6 @@ static irqreturn_t dpni_irq0_handler_thr
dpaa2_eth_set_mac_addr(netdev_priv(net_dev));
dpaa2_eth_update_tx_fqids(priv);
- rtnl_lock();
/* We can avoid locking because the "endpoint changed" IRQ
* handler is the only one who changes priv->mac at runtime,
* so we are not racing with anyone.
@@ -4544,7 +4543,6 @@ static irqreturn_t dpni_irq0_handler_thr
dpaa2_eth_disconnect_mac(priv);
else
dpaa2_eth_connect_mac(priv);
- rtnl_unlock();
}
return IRQ_HANDLED;
@@ -4863,9 +4861,7 @@ static int dpaa2_eth_remove(struct fsl_m
else
fsl_mc_free_irqs(ls_dev);
- rtnl_lock();
dpaa2_eth_disconnect_mac(priv);
- rtnl_unlock();
dpaa2_eth_free_rings(priv);
free_percpu(priv->fd);
free_percpu(priv->sgt_cache);
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
@@ -428,7 +428,9 @@ int dpaa2_mac_connect(struct dpaa2_mac *
}
mac->phylink = phylink;
+ rtnl_lock();
err = phylink_fwnode_phy_connect(mac->phylink, dpmac_node, 0);
+ rtnl_unlock();
if (err) {
netdev_err(net_dev, "phylink_fwnode_phy_connect() = %d\n", err);
goto err_phylink_destroy;
@@ -446,7 +448,10 @@ err_pcs_destroy:
void dpaa2_mac_disconnect(struct dpaa2_mac *mac)
{
+ rtnl_lock();
phylink_disconnect_phy(mac->phylink);
+ rtnl_unlock();
+
phylink_destroy(mac->phylink);
dpaa2_pcs_destroy(mac);
of_phy_put(mac->serdes_phy);
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -1530,7 +1530,6 @@ static irqreturn_t dpaa2_switch_irq0_han
}
if (status & DPSW_IRQ_EVENT_ENDPOINT_CHANGED) {
- rtnl_lock();
/* We can avoid locking because the "endpoint changed" IRQ
* handler is the only one who changes priv->mac at runtime,
* so we are not racing with anyone.
@@ -1540,7 +1539,6 @@ static irqreturn_t dpaa2_switch_irq0_han
dpaa2_switch_port_disconnect_mac(port_priv);
else
dpaa2_switch_port_connect_mac(port_priv);
- rtnl_unlock();
}
out:
@@ -2952,9 +2950,7 @@ static void dpaa2_switch_remove_port(str
{
struct ethsw_port_priv *port_priv = ethsw->ports[port_idx];
- rtnl_lock();
dpaa2_switch_port_disconnect_mac(port_priv);
- rtnl_unlock();
free_netdev(port_priv->netdev);
ethsw->ports[port_idx] = NULL;
}

3
target/linux/at91/Makefile
View File

@@ -10,8 +10,7 @@ BOARDNAME:=Microchip (Atmel AT91)
FEATURES:=ext4 squashfs targz usbgadget ubifs
SUBTARGETS:=sama7 sama5 sam9x
KERNEL_PATCHVER:=6.1
KERNEL_TESTING_PATCHVER:=6.6
KERNEL_PATCHVER:=6.6
include $(INCLUDE_DIR)/target.mk

4
target/linux/at91/image/Makefile
View File

@@ -19,9 +19,7 @@ FAT32_BLOCKS:=$(shell echo \
$$(($(AT91_SD_BOOT_PARTSIZE)*1024*1024/$(FAT32_BLOCK_SIZE))))
define Device/Default
ifdef CONFIG_LINUX_6_6
DEVICE_DTS_DIR := $(DTS_DIR)/microchip
endif
DEVICE_DTS_DIR := $(DTS_DIR)/microchip
$(Device/default-nand)
PROFILES := Default
FILESYSTEMS := squashfs ubifs ext4

34
target/linux/at91/patches-6.1/0001-v6.3-pinctrl-at91-convert-to-NOIRQ_SYSTEM_SLEEP_PM_OPS.patch
View File

@@ -1,34 +0,0 @@
From 5d8ae2928f71f0f9c2c3f8f13d00ecec35649ad3 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Thu, 15 Dec 2022 17:42:54 +0100
Subject: [PATCH] pinctrl: at91: convert to NOIRQ_SYSTEM_SLEEP_PM_OPS
With the old SET_NOIRQ_SYSTEM_SLEEP_PM_OPS, some configs result in a
build warning:
drivers/pinctrl/pinctrl-at91.c:1668:12: error: 'at91_gpio_resume' defined but not used [-Werror=unused-function]
1668 | static int at91_gpio_resume(struct device *dev)
| ^~~~~~~~~~~~~~~~
drivers/pinctrl/pinctrl-at91.c:1650:12: error: 'at91_gpio_suspend' defined but not used [-Werror=unused-function]
1650 | static int at91_gpio_suspend(struct device *dev)
| ^~~~~~~~~~~~~~~~~
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Ryan Wanner <Ryan.Wanner@microchip.com>
Link: https://lore.kernel.org/r/20221215164301.934805-1-arnd@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/pinctrl-at91.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -1921,7 +1921,7 @@ err:
}
static const struct dev_pm_ops at91_gpio_pm_ops = {
- SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(at91_gpio_suspend, at91_gpio_resume)
+ NOIRQ_SYSTEM_SLEEP_PM_OPS(at91_gpio_suspend, at91_gpio_resume)
};
static struct platform_driver at91_gpio_driver = {

341
target/linux/at91/sam9x/config-6.1
View File

@@ -1,341 +0,0 @@
CONFIG_ALIGNMENT_TRAP=y
CONFIG_ARCH_32BIT_OFF_T=y
CONFIG_ARCH_AT91=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_KEEP_MEMBLOCK=y
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_ARCH_MULTIPLATFORM=y
# CONFIG_ARCH_MULTI_V4 is not set
CONFIG_ARCH_MULTI_V4T=y
CONFIG_ARCH_MULTI_V4_V5=y
CONFIG_ARCH_MULTI_V5=y
CONFIG_ARCH_NR_GPIO=0
CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARM=y
CONFIG_ARM_CPU_SUSPEND=y
CONFIG_ARM_HAS_GROUP_RELOCS=y
CONFIG_ARM_L1_CACHE_SHIFT=5
CONFIG_ARM_PATCH_PHYS_VIRT=y
CONFIG_ARM_THUMB=y
CONFIG_ARM_UNWIND=y
# CONFIG_AT91RM9200_WATCHDOG is not set
CONFIG_AT91SAM9X_WATCHDOG=y
# CONFIG_AT91_ADC is not set
CONFIG_AT91_SAMA5D2_ADC=y
CONFIG_AT91_SOC_ID=y
# CONFIG_AT91_SOC_SFR is not set
CONFIG_ATMEL_AIC5_IRQ=y
CONFIG_ATMEL_AIC_IRQ=y
CONFIG_ATMEL_CLOCKSOURCE_PIT=y
CONFIG_ATMEL_CLOCKSOURCE_TCB=y
CONFIG_ATMEL_EBI=y
CONFIG_ATMEL_PIT=y
CONFIG_ATMEL_PM=y
CONFIG_ATMEL_SDRAMC=y
CONFIG_ATMEL_SSC=y
CONFIG_ATMEL_ST=y
CONFIG_ATMEL_TCB_CLKSRC=y
CONFIG_AT_HDMAC=y
CONFIG_AT_XDMAC=y
CONFIG_AUTO_ZRELADDR=y
CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK=y
CONFIG_BLK_PM=y
CONFIG_CC_HAVE_STACKPROTECTOR_TLS=y
CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
CONFIG_CC_NO_ARRAY_BOUNDS=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_COMMON_CLK=y
CONFIG_COMMON_CLK_AT91=y
CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_CONFIGFS_FS=y
CONFIG_CPU_32v4T=y
CONFIG_CPU_32v5=y
CONFIG_CPU_ABRT_EV4T=y
CONFIG_CPU_ABRT_EV5TJ=y
CONFIG_CPU_ARM920T=y
CONFIG_CPU_ARM926T=y
# CONFIG_CPU_CACHE_ROUND_ROBIN is not set
CONFIG_CPU_CACHE_V4WT=y
CONFIG_CPU_CACHE_VIVT=y
CONFIG_CPU_COPY_V4WB=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y
# CONFIG_CPU_DCACHE_WRITETHROUGH is not set
CONFIG_CPU_LITTLE_ENDIAN=y
CONFIG_CPU_NO_EFFICIENT_FFS=y
CONFIG_CPU_PABRT_LEGACY=y
CONFIG_CPU_PM=y
CONFIG_CPU_THUMB_CAPABLE=y
CONFIG_CPU_TLB_V4WBI=y
CONFIG_CPU_USE_DOMAINS=y
CONFIG_CRC16=y
CONFIG_CRC7=y
CONFIG_CRC_CCITT=y
CONFIG_CRC_ITU_T=y
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_DEFLATE=y
CONFIG_CRYPTO_HASH_INFO=y
CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
CONFIG_CRYPTO_LIB_SHA1=y
CONFIG_CRYPTO_LIB_UTILS=y
CONFIG_CRYPTO_LZO=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_ZSTD=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
CONFIG_DMADEVICES=y
CONFIG_DMA_ENGINE=y
CONFIG_DMA_OF=y
CONFIG_DMA_OPS=y
CONFIG_DTC=y
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_EEPROM_AT24=y
CONFIG_EXCLUSIVE_SYSTEM_RAM=y
CONFIG_EXT4_FS=y
CONFIG_FIXED_PHY=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_FREEZER=y
CONFIG_FS_IOMAP=y
CONFIG_FS_MBCACHE=y
CONFIG_FWNODE_MDIO=y
CONFIG_FW_CACHE=y
CONFIG_FW_LOADER_PAGED_BUF=y
CONFIG_FW_LOADER_SYSFS=y
CONFIG_GCC10_NO_ARRAY_BOUNDS=y
CONFIG_GCC_ASM_GOTO_OUTPUT_WORKAROUND=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_GENERIC_ATOMIC64=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_GENERIC_EARLY_IOREMAP=y
CONFIG_GENERIC_IDLE_POLL_SETUP=y
CONFIG_GENERIC_IRQ_CHIP=y
CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_PINCONF=y
CONFIG_GENERIC_PINCTRL_GROUPS=y
CONFIG_GENERIC_PINMUX_FUNCTIONS=y
CONFIG_GENERIC_SCHED_CLOCK=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GLOB=y
CONFIG_GPIOLIB_IRQCHIP=y
CONFIG_GPIO_CDEV=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_ATMEL=y
CONFIG_HZ=128
CONFIG_HZ_FIXED=128
CONFIG_HZ_PERIODIC=y
CONFIG_I2C=y
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_AT91=y
# CONFIG_I2C_AT91_SLAVE_EXPERIMENTAL is not set
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_GPIO=y
CONFIG_IIO=y
CONFIG_IIO_BUFFER=y
CONFIG_IIO_KFIFO_BUF=y
CONFIG_IIO_TRIGGER=y
CONFIG_IIO_TRIGGERED_BUFFER=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_INPUT=y
CONFIG_IRQCHIP=y
CONFIG_IRQSTACKS=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_IRQ_WORK=y
CONFIG_JBD2=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_PWM=y
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_LEDS_TRIGGER_GPIO=y
CONFIG_LIBFDT=y
CONFIG_LOCK_DEBUGGING_SUPPORT=y
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_MACB=y
CONFIG_MACB_USE_HWSTAMP=y
# CONFIG_MCHP_EIC is not set
CONFIG_MDIO_BUS=y
CONFIG_MDIO_DEVICE=y
CONFIG_MDIO_DEVRES=y
CONFIG_MEMFD_CREATE=y
CONFIG_MEMORY=y
CONFIG_MFD_AT91_USART=y
CONFIG_MFD_ATMEL_FLEXCOM=y
CONFIG_MFD_ATMEL_HLCDC=y
CONFIG_MFD_ATMEL_SMC=y
CONFIG_MFD_CORE=y
CONFIG_MFD_SYSCON=y
CONFIG_MICREL_PHY=y
CONFIG_MICROCHIP_CLOCKSOURCE_PIT64B=y
CONFIG_MICROCHIP_PIT64B=y
CONFIG_MIGRATION=y
CONFIG_MMC=y
CONFIG_MMC_ATMELMCI=y
CONFIG_MMC_BLOCK=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_OF_AT91=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_DATAFLASH=y
# CONFIG_MTD_DATAFLASH_OTP is not set
# CONFIG_MTD_DATAFLASH_WRITE_VERIFY is not set
CONFIG_MTD_SPI_NOR=y
CONFIG_MTD_UBI=y
CONFIG_MTD_UBI_BEB_LIMIT=20
# CONFIG_MTD_UBI_BLOCK is not set
CONFIG_MTD_UBI_FASTMAP=y
CONFIG_MTD_UBI_GLUEBI=y
CONFIG_MTD_UBI_WL_THRESHOLD=4096
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEED_KUSER_HELPERS=y
CONFIG_NEED_PER_CPU_KM=y
CONFIG_NET_PTP_CLASSIFY=y
CONFIG_NET_SELFTESTS=y
CONFIG_NLS=y
CONFIG_NVMEM=y
CONFIG_NVMEM_LAYOUTS=y
# CONFIG_NVMEM_MICROCHIP_OTPC is not set
CONFIG_NVMEM_SYSFS=y
CONFIG_OF=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_FLATTREE=y
CONFIG_OF_GPIO=y
CONFIG_OF_IRQ=y
CONFIG_OF_KOBJ=y
CONFIG_OF_MDIO=y
CONFIG_OLD_SIGACTION=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_PAGE_POOL=y
CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
CONFIG_PAHOLE_HAS_LANG_EXCLUDE=y
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PGTABLE_LEVELS=2
CONFIG_PHYLIB=y
CONFIG_PHYLIB_LEDS=y
CONFIG_PHYLINK=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_AT91=y
# CONFIG_PINCTRL_AT91PIO4 is not set
CONFIG_PM=y
CONFIG_PM_CLK=y
CONFIG_PM_SLEEP=y
CONFIG_POWER_RESET=y
CONFIG_POWER_RESET_AT91_POWEROFF=y
CONFIG_POWER_RESET_AT91_RESET=y
CONFIG_POWER_RESET_AT91_SAMA5D2_SHDWC=y
CONFIG_POWER_SUPPLY=y
CONFIG_PPS=y
CONFIG_PREEMPT_NONE_BUILD=y
CONFIG_PTP_1588_CLOCK=y
CONFIG_PTP_1588_CLOCK_OPTIONAL=y
CONFIG_PWM=y
CONFIG_PWM_ATMEL=y
CONFIG_PWM_ATMEL_HLCDC_PWM=y
CONFIG_PWM_ATMEL_TCB=y
CONFIG_PWM_SYSFS=y
CONFIG_RANDSTRUCT_NONE=y
CONFIG_RATIONAL=y
CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=y
CONFIG_REGMAP_MMIO=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_AT91RM9200=y
CONFIG_RTC_DRV_AT91SAM9=y
CONFIG_RTC_I2C_AND_SPI=y
CONFIG_RTC_MC146818_LIB=y
CONFIG_SAMA5D4_WATCHDOG=y
# CONFIG_SERIAL_8250 is not set
CONFIG_SERIAL_ATMEL=y
CONFIG_SERIAL_ATMEL_CONSOLE=y
CONFIG_SERIAL_ATMEL_PDC=y
# CONFIG_SERIAL_ATMEL_TTYAT is not set
CONFIG_SERIAL_MCTRL_GPIO=y
CONFIG_SGL_ALLOC=y
CONFIG_SOC_AT91RM9200=y
CONFIG_SOC_AT91SAM9=y
CONFIG_SOC_BUS=y
CONFIG_SOC_SAM9X60=y
CONFIG_SOC_SAM_V4_V5=y
CONFIG_SOFTIRQ_ON_OWN_STACK=y
CONFIG_SPARSE_IRQ=y
CONFIG_SPI=y
# CONFIG_SPI_AT91_USART is not set
CONFIG_SPI_ATMEL=y
CONFIG_SPI_ATMEL_QUADSPI=y
CONFIG_SPI_BITBANG=y
CONFIG_SPI_GPIO=y
CONFIG_SPI_MASTER=y
CONFIG_SPI_MEM=y
CONFIG_SPI_SPIDEV=y
CONFIG_SPLIT_PTLOCK_CPUS=999999
CONFIG_SRAM=y
CONFIG_SRAM_EXEC=y
CONFIG_SRCU=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_SWPHY=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_THREAD_INFO_IN_TASK=y
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_TIMER_OF=y
CONFIG_TIMER_PROBE=y
CONFIG_TINY_SRCU=y
CONFIG_UBIFS_FS=y
CONFIG_UBIFS_FS_ADVANCED_COMPR=y
CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
CONFIG_UNWINDER_ARM=y
CONFIG_USB=y
CONFIG_USB_ACM=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
# CONFIG_USB_AT91 is not set
# CONFIG_USB_ATMEL_USBA is not set
CONFIG_USB_COMMON=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_HCD_AT91=y
# CONFIG_USB_EHCI_HCD_PLATFORM is not set
CONFIG_USB_GADGET=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_AT91=y
CONFIG_USB_OHCI_HCD_PLATFORM=y
CONFIG_USB_SERIAL=y
# CONFIG_USB_SERIAL_CONSOLE is not set
CONFIG_USB_SERIAL_FTDI_SIO=y
CONFIG_USB_SERIAL_PL2303=y
CONFIG_USB_SUPPORT=y
CONFIG_USE_OF=y
# CONFIG_VFP is not set
# CONFIG_VIDEO_ATMEL_XISC is not set
# CONFIG_VIDEO_MICROCHIP_CSI2DC is not set
CONFIG_WATCHDOG_CORE=y
CONFIG_XXHASH=y
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZLIB_DEFLATE=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZSTD_COMMON=y
CONFIG_ZSTD_COMPRESS=y
CONFIG_ZSTD_DECOMPRESS=y

517
target/linux/at91/sama5/config-6.1
View File

@@ -1,517 +0,0 @@
CONFIG_ALIGNMENT_TRAP=y
CONFIG_ARCH_32BIT_OFF_T=y
CONFIG_ARCH_AT91=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_KEEP_MEMBLOCK=y
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_ARCH_MULTIPLATFORM=y
CONFIG_ARCH_MULTI_V6_V7=y
CONFIG_ARCH_MULTI_V7=y
CONFIG_ARCH_NR_GPIO=0
CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARM=y
CONFIG_ARM_AT91_CPUIDLE=y
CONFIG_ARM_CPU_SUSPEND=y
CONFIG_ARM_HAS_GROUP_RELOCS=y
CONFIG_ARM_HEAVY_MB=y
CONFIG_ARM_L1_CACHE_SHIFT=6
CONFIG_ARM_L1_CACHE_SHIFT_6=y
CONFIG_ARM_PATCH_IDIV=y
CONFIG_ARM_PATCH_PHYS_VIRT=y
CONFIG_ARM_THUMB=y
CONFIG_ARM_UNWIND=y
CONFIG_ARM_VIRT_EXT=y
CONFIG_AT91SAM9X_WATCHDOG=y
CONFIG_AT91_ADC=y
CONFIG_AT91_SAMA5D2_ADC=y
CONFIG_AT91_SOC_ID=y
# CONFIG_AT91_SOC_SFR is not set
CONFIG_ATMEL_AIC5_IRQ=y
# CONFIG_ATMEL_CLOCKSOURCE_PIT is not set
CONFIG_ATMEL_CLOCKSOURCE_TCB=y
CONFIG_ATMEL_EBI=y
CONFIG_ATMEL_PM=y
CONFIG_ATMEL_SDRAMC=y
# CONFIG_ATMEL_SECURE_PM is not set
CONFIG_ATMEL_SSC=y
CONFIG_ATMEL_TCB_CLKSRC=y
CONFIG_AT_HDMAC=y
CONFIG_AT_XDMAC=y
CONFIG_AUTO_ZRELADDR=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_PWM=y
CONFIG_BATTERY_ACT8945A=y
CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=4
CONFIG_BLK_DEV_RAM_SIZE=8192
CONFIG_BLK_DEV_SD=y
CONFIG_BLK_PM=y
CONFIG_CACHE_L2X0=y
CONFIG_CC_HAVE_STACKPROTECTOR_TLS=y
CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
CONFIG_CC_NO_ARRAY_BOUNDS=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_CMA=y
CONFIG_CMA_ALIGNMENT=8
CONFIG_CMA_AREAS=7
# CONFIG_CMA_DEBUG is not set
# CONFIG_CMA_DEBUGFS is not set
CONFIG_CMA_SIZE_MBYTES=16
# CONFIG_CMA_SIZE_SEL_MAX is not set
CONFIG_CMA_SIZE_SEL_MBYTES=y
# CONFIG_CMA_SIZE_SEL_MIN is not set
# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
# CONFIG_CMA_SYSFS is not set
CONFIG_CMDLINE="console=ttyS0,115200 initrd=0x21100000,25165824 root=/dev/ram0 rw"
CONFIG_CMDLINE_FROM_BOOTLOADER=y
CONFIG_COMMON_CLK=y
CONFIG_COMMON_CLK_AT91=y
CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_CONFIGFS_FS=y
CONFIG_CONTIG_ALLOC=y
CONFIG_COREDUMP=y
CONFIG_CPU_32v6K=y
CONFIG_CPU_32v7=y
CONFIG_CPU_ABRT_EV7=y
CONFIG_CPU_CACHE_V7=y
CONFIG_CPU_CACHE_VIPT=y
CONFIG_CPU_COPY_V6=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y
CONFIG_CPU_HAS_ASID=y
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y
CONFIG_CPU_LITTLE_ENDIAN=y
CONFIG_CPU_PABRT_V7=y
CONFIG_CPU_PM=y
CONFIG_CPU_SPECTRE=y
CONFIG_CPU_THUMB_CAPABLE=y
CONFIG_CPU_TLB_V7=y
CONFIG_CPU_V7=y
CONFIG_CRASH_CORE=y
CONFIG_CRASH_DUMP=y
CONFIG_CRC16=y
# CONFIG_CRC32_SARWATE is not set
CONFIG_CRC32_SLICEBY8=y
CONFIG_CROSS_MEMORY_ATTACH=y
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_DEFLATE=y
CONFIG_CRYPTO_DRBG=y
CONFIG_CRYPTO_DRBG_HMAC=y
CONFIG_CRYPTO_DRBG_MENU=y
CONFIG_CRYPTO_HASH_INFO=y
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_JITTERENTROPY=y
CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
CONFIG_CRYPTO_LIB_SHA1=y
CONFIG_CRYPTO_LIB_SHA256=y
CONFIG_CRYPTO_LIB_UTILS=y
CONFIG_CRYPTO_LZO=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_RNG_DEFAULT=y
CONFIG_CRYPTO_SEQIV=y
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=y
CONFIG_CRYPTO_ZSTD=y
CONFIG_CURRENT_POINTER_IN_TPIDRURO=y
CONFIG_DCACHE_WORD_ACCESS=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_DEBUG_USER=y
CONFIG_DMADEVICES=y
CONFIG_DMA_CMA=y
CONFIG_DMA_ENGINE=y
CONFIG_DMA_OF=y
CONFIG_DMA_OPS=y
CONFIG_DMA_SHARED_BUFFER=y
CONFIG_DNOTIFY=y
CONFIG_DRM=y
CONFIG_DRM_ATMEL_HLCDC=y
CONFIG_DRM_BRIDGE=y
CONFIG_DRM_FBDEV_EMULATION=y
CONFIG_DRM_FBDEV_OVERALLOC=100
CONFIG_DRM_GEM_DMA_HELPER=y
CONFIG_DRM_KMS_HELPER=y
CONFIG_DRM_NOMODESET=y
CONFIG_DRM_PANEL=y
CONFIG_DRM_PANEL_BRIDGE=y
CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y
CONFIG_DRM_PANEL_SIMPLE=y
CONFIG_DTC=y
CONFIG_DVB_CORE=y
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_EEPROM_AT24=y
CONFIG_ELF_CORE=y
CONFIG_EXCLUSIVE_SYSTEM_RAM=y
CONFIG_EXT4_FS=y
CONFIG_FAT_FS=y
CONFIG_FB=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_IMAGEBLIT=y
CONFIG_FB_CMDLINE=y
CONFIG_FB_DEFERRED_IO=y
CONFIG_FB_SYS_COPYAREA=y
CONFIG_FB_SYS_FILLRECT=y
CONFIG_FB_SYS_FOPS=y
CONFIG_FB_SYS_IMAGEBLIT=y
CONFIG_FIXED_PHY=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_FREEZER=y
CONFIG_FS_IOMAP=y
CONFIG_FS_MBCACHE=y
CONFIG_FWNODE_MDIO=y
CONFIG_FW_CACHE=y
CONFIG_FW_LOADER_PAGED_BUF=y
CONFIG_FW_LOADER_SYSFS=y
CONFIG_GCC10_NO_ARRAY_BOUNDS=y
CONFIG_GCC_ASM_GOTO_OUTPUT_WORKAROUND=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_GENERIC_CPU_VULNERABILITIES=y
CONFIG_GENERIC_EARLY_IOREMAP=y
CONFIG_GENERIC_GETTIMEOFDAY=y
CONFIG_GENERIC_IDLE_POLL_SETUP=y
CONFIG_GENERIC_IRQ_CHIP=y
CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_PINCONF=y
CONFIG_GENERIC_SCHED_CLOCK=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_VDSO_32=y
CONFIG_GLOB=y
CONFIG_GPIOLIB_IRQCHIP=y
CONFIG_GPIO_CDEV=y
# CONFIG_HARDEN_BRANCH_HISTORY is not set
# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAVE_SMP=y
CONFIG_HDMI=y
CONFIG_HID=y
CONFIG_HID_GENERIC=y
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_ATMEL=y
CONFIG_HZ_FIXED=0
CONFIG_I2C=y
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_AT91=y
# CONFIG_I2C_AT91_SLAVE_EXPERIMENTAL is not set
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_GPIO=y
CONFIG_I2C_HELPER_AUTO=y
CONFIG_IIO=y
CONFIG_IIO_BUFFER=y
CONFIG_IIO_KFIFO_BUF=y
CONFIG_IIO_TRIGGER=y
CONFIG_IIO_TRIGGERED_BUFFER=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_INPUT=y
CONFIG_INPUT_EVDEV=y
CONFIG_INPUT_KEYBOARD=y
CONFIG_INPUT_LEDS=y
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_IRQCHIP=y
CONFIG_IRQSTACKS=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_IRQ_WORK=y
CONFIG_JBD2=y
# CONFIG_JFFS2_FS is not set
CONFIG_KCMP=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_XZ is not set
CONFIG_KEXEC=y
CONFIG_KEXEC_CORE=y
CONFIG_KEYBOARD_GPIO=y
CONFIG_KEYBOARD_QT1070=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_PWM=y
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_LEDS_TRIGGER_GPIO=y
CONFIG_LIBFDT=y
CONFIG_LOCALVERSION_AUTO=y
CONFIG_LOCK_DEBUGGING_SUPPORT=y
CONFIG_LOG_BUF_SHIFT=16
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_MACB=y
CONFIG_MACB_USE_HWSTAMP=y
CONFIG_MAGIC_SYSRQ=y
# CONFIG_MCHP_EIC is not set
CONFIG_MDIO_BUS=y
CONFIG_MDIO_DEVICE=y
CONFIG_MDIO_DEVRES=y
CONFIG_MEDIA_ANALOG_TV_SUPPORT=y
CONFIG_MEDIA_ATTACH=y
CONFIG_MEDIA_CAMERA_SUPPORT=y
CONFIG_MEDIA_DIGITAL_TV_SUPPORT=y
CONFIG_MEDIA_PLATFORM_SUPPORT=y
CONFIG_MEDIA_RADIO_SUPPORT=y
CONFIG_MEDIA_SDR_SUPPORT=y
CONFIG_MEDIA_SUPPORT=y
CONFIG_MEDIA_TEST_SUPPORT=y
CONFIG_MEDIA_TUNER=y
CONFIG_MEDIA_USB_SUPPORT=y
CONFIG_MEMFD_CREATE=y
CONFIG_MEMORY=y
CONFIG_MEMORY_ISOLATION=y
CONFIG_MFD_ACT8945A=y
CONFIG_MFD_AT91_USART=y
CONFIG_MFD_ATMEL_FLEXCOM=y
CONFIG_MFD_ATMEL_HLCDC=y
CONFIG_MFD_ATMEL_SMC=y
CONFIG_MFD_CORE=y
CONFIG_MFD_SYSCON=y
CONFIG_MICREL_PHY=y
# CONFIG_MICROCHIP_CLOCKSOURCE_PIT64B is not set
CONFIG_MIGHT_HAVE_CACHE_L2X0=y
CONFIG_MIGRATION=y
CONFIG_MMC=y
CONFIG_MMC_ATMELMCI=y
CONFIG_MMC_BLOCK=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_OF_AT91=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MODULES_USE_ELF_REL=y
# CONFIG_MTD_CFI_AMDSTD is not set
# CONFIG_MTD_CFI_INTELEXT is not set
CONFIG_MTD_CMDLINE_PARTS=y
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
CONFIG_MTD_SPI_NOR=y
CONFIG_MTD_UBI=y
CONFIG_MTD_UBI_BEB_LIMIT=20
# CONFIG_MTD_UBI_BLOCK is not set
CONFIG_MTD_UBI_FASTMAP=y
CONFIG_MTD_UBI_WL_THRESHOLD=4096
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEED_PER_CPU_KM=y
# CONFIG_NEON is not set
CONFIG_NET_PTP_CLASSIFY=y
CONFIG_NET_SELFTESTS=y
CONFIG_NLS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_CODEPAGE_850=y
CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_UTF8=y
CONFIG_NO_HZ_COMMON=y
CONFIG_NO_HZ_IDLE=y
CONFIG_NVMEM=y
CONFIG_NVMEM_LAYOUTS=y
# CONFIG_NVMEM_MICROCHIP_OTPC is not set
CONFIG_NVMEM_SYSFS=y
CONFIG_OF=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_FLATTREE=y
CONFIG_OF_GPIO=y
CONFIG_OF_IRQ=y
CONFIG_OF_KOBJ=y
CONFIG_OF_MDIO=y
CONFIG_OLD_SIGACTION=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_OUTER_CACHE=y
CONFIG_OUTER_CACHE_SYNC=y
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_PAGE_POOL=y
CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
CONFIG_PAHOLE_HAS_LANG_EXCLUDE=y
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PGTABLE_LEVELS=2
CONFIG_PHYLIB=y
CONFIG_PHYLIB_LEDS=y
CONFIG_PHYLINK=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_AT91=y
CONFIG_PINCTRL_AT91PIO4=y
# CONFIG_PINCTRL_SINGLE is not set
CONFIG_PM=y
CONFIG_PM_CLK=y
CONFIG_PM_SLEEP=y
CONFIG_POWER_RESET=y
CONFIG_POWER_RESET_AT91_POWEROFF=y
CONFIG_POWER_RESET_AT91_RESET=y
CONFIG_POWER_RESET_AT91_SAMA5D2_SHDWC=y
CONFIG_POWER_SUPPLY=y
CONFIG_PPS=y
CONFIG_PREEMPT_NONE_BUILD=y
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
CONFIG_PRINTK_TIME=y
CONFIG_PROC_VMCORE=y
CONFIG_PTP_1588_CLOCK=y
CONFIG_PTP_1588_CLOCK_OPTIONAL=y
CONFIG_PWM=y
CONFIG_PWM_ATMEL=y
CONFIG_PWM_ATMEL_HLCDC_PWM=y
CONFIG_PWM_ATMEL_TCB=y
CONFIG_PWM_SYSFS=y
CONFIG_RANDSTRUCT_NONE=y
CONFIG_RATIONAL=y
CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=y
CONFIG_REGMAP_MMIO=y
CONFIG_REGMAP_SPI=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_ACT8865=y
CONFIG_REGULATOR_ACT8945A=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_AT91RM9200=y
# CONFIG_RTC_DRV_AT91SAM9 is not set
# CONFIG_RTC_DRV_CMOS is not set
CONFIG_RTC_I2C_AND_SPI=y
CONFIG_SAMA5D4_WATCHDOG=y
CONFIG_SCSI=y
CONFIG_SCSI_COMMON=y
# CONFIG_SCSI_LOWLEVEL is not set
# CONFIG_SERIAL_8250 is not set
CONFIG_SERIAL_ATMEL=y
CONFIG_SERIAL_ATMEL_CONSOLE=y
CONFIG_SERIAL_ATMEL_PDC=y
# CONFIG_SERIAL_ATMEL_TTYAT is not set
CONFIG_SERIAL_MCTRL_GPIO=y
CONFIG_SGL_ALLOC=y
CONFIG_SG_POOL=y
CONFIG_SND=y
CONFIG_SND_ARM=y
# CONFIG_SND_AT73C213 is not set
# CONFIG_SND_AT91_SOC_SAM9G20_WM8731 is not set
# CONFIG_SND_AT91_SOC_SAM9X5_WM8731 is not set
CONFIG_SND_ATMEL_SOC=y
CONFIG_SND_ATMEL_SOC_CLASSD=y
CONFIG_SND_ATMEL_SOC_DMA=y
CONFIG_SND_ATMEL_SOC_I2S=y
CONFIG_SND_ATMEL_SOC_PDC=y
# CONFIG_SND_ATMEL_SOC_PDMIC is not set
CONFIG_SND_ATMEL_SOC_SSC=y
CONFIG_SND_ATMEL_SOC_SSC_DMA=y
# CONFIG_SND_ATMEL_SOC_SSC_PDC is not set
# CONFIG_SND_ATMEL_SOC_TSE850_PCM5142 is not set
CONFIG_SND_ATMEL_SOC_WM8904=y
# CONFIG_SND_COMPRESS_OFFLOAD is not set
CONFIG_SND_DMAENGINE_PCM=y
CONFIG_SND_JACK=y
CONFIG_SND_JACK_INPUT_DEV=y
# CONFIG_SND_MCHP_SOC_I2S_MCC is not set
# CONFIG_SND_MCHP_SOC_PDMC is not set
# CONFIG_SND_MCHP_SOC_SPDIFRX is not set
# CONFIG_SND_MCHP_SOC_SPDIFTX is not set
CONFIG_SND_PCM=y
CONFIG_SND_PCM_TIMER=y
CONFIG_SND_SOC=y
CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM=y
CONFIG_SND_SOC_I2C_AND_SPI=y
CONFIG_SND_SOC_MIKROE_PROTO=y
CONFIG_SND_SOC_WM8731=y
CONFIG_SND_SOC_WM8904=y
CONFIG_SND_SPI=y
CONFIG_SND_SUPPORT_OLD_API=y
CONFIG_SND_TIMER=y
CONFIG_SOC_BUS=y
# CONFIG_SOC_LAN966 is not set
CONFIG_SOC_SAMA5=y
CONFIG_SOC_SAMA5D2=y
CONFIG_SOC_SAMA5D3=y
CONFIG_SOC_SAMA5D4=y
# CONFIG_SOC_SAMA7G5 is not set
CONFIG_SOC_SAM_V7=y
CONFIG_SOFTIRQ_ON_OWN_STACK=y
CONFIG_SOUND=y
CONFIG_SOUND_OSS_CORE=y
CONFIG_SPARSE_IRQ=y
CONFIG_SPI=y
# CONFIG_SPI_AT91_USART is not set
CONFIG_SPI_ATMEL=y
CONFIG_SPI_ATMEL_QUADSPI=y
CONFIG_SPI_BITBANG=y
CONFIG_SPI_GPIO=y
CONFIG_SPI_MASTER=y
CONFIG_SPI_MEM=y
# CONFIG_SQUASHFS is not set
CONFIG_SRAM=y
CONFIG_SRAM_EXEC=y
CONFIG_SRCU=y
# CONFIG_STANDALONE is not set
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_SWPHY=y
# CONFIG_SWP_EMULATE is not set
CONFIG_SYNC_FILE=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_THREAD_INFO_IN_TASK=y
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_TIMER_OF=y
CONFIG_TIMER_PROBE=y
CONFIG_TINY_SRCU=y
CONFIG_TOUCHSCREEN_ATMEL_MXT=y
CONFIG_UACCESS_WITH_MEMCPY=y
CONFIG_UBIFS_FS=y
CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
CONFIG_UNWINDER_ARM=y
CONFIG_USB=y
CONFIG_USB_ACM=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
# CONFIG_USB_AT91 is not set
# CONFIG_USB_ATMEL_USBA is not set
CONFIG_USB_COMMON=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_HCD_AT91=y
# CONFIG_USB_EHCI_HCD_PLATFORM is not set
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
CONFIG_USB_GADGET=y
CONFIG_USB_HID=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_AT91=y
CONFIG_USB_OHCI_HCD_PLATFORM=y
# CONFIG_USB_PWC is not set
CONFIG_USB_SERIAL=y
# CONFIG_USB_SERIAL_CONSOLE is not set
CONFIG_USB_SERIAL_FTDI_SIO=y
CONFIG_USB_SERIAL_PL2303=y
CONFIG_USB_STORAGE=y
CONFIG_USB_SUPPORT=y
CONFIG_USE_OF=y
CONFIG_VFAT_FS=y
CONFIG_VFP=y
CONFIG_VFPv3=y
# CONFIG_VIDEO_ATMEL_XISC is not set
CONFIG_VIDEOMODE_HELPERS=y
CONFIG_VIDEO_DEV=y
# CONFIG_VIDEO_MICROCHIP_CSI2DC is not set
CONFIG_VIDEO_V4L2_I2C=y
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_WATCHDOG_CORE=y
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
CONFIG_XXHASH=y
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZLIB_DEFLATE=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZSTD_COMMON=y
CONFIG_ZSTD_COMPRESS=y
CONFIG_ZSTD_DECOMPRESS=y

424
target/linux/at91/sama7/config-6.1
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@@ -1,424 +0,0 @@
CONFIG_ALIGNMENT_TRAP=y
# CONFIG_ALLOW_DEV_COREDUMP is not set
CONFIG_ARCH_32BIT_OFF_T=y
CONFIG_ARCH_AT91=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_KEEP_MEMBLOCK=y
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_ARCH_MULTIPLATFORM=y
CONFIG_ARCH_MULTI_V6_V7=y
CONFIG_ARCH_MULTI_V7=y
CONFIG_ARCH_NR_GPIO=0
CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARM=y
CONFIG_ARM_GIC=y
CONFIG_ARM_HAS_GROUP_RELOCS=y
CONFIG_ARM_L1_CACHE_SHIFT=6
CONFIG_ARM_L1_CACHE_SHIFT_6=y
# CONFIG_ARM_PATCH_IDIV is not set
CONFIG_ARM_PATCH_PHYS_VIRT=y
CONFIG_ARM_THUMB=y
CONFIG_ARM_UNWIND=y
CONFIG_ARM_VIRT_EXT=y
# CONFIG_AT91SAM9X_WATCHDOG is not set
# CONFIG_AT91_ADC is not set
CONFIG_AT91_SAMA5D2_ADC=y
CONFIG_AT91_SOC_ID=y
# CONFIG_AT91_SOC_SFR is not set
CONFIG_ATMEL_CLOCKSOURCE_TCB=y
# CONFIG_ATMEL_EBI is not set
CONFIG_ATMEL_SDRAMC=y
CONFIG_ATMEL_TCB_CLKSRC=y
# CONFIG_AT_HDMAC is not set
CONFIG_AT_XDMAC=y
CONFIG_AUTO_ZRELADDR=y
CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=1
CONFIG_BLK_DEV_RAM_SIZE=8192
CONFIG_BLK_DEV_SD=y
# CONFIG_CACHE_L2X0 is not set
CONFIG_CAN=y
CONFIG_CC_HAVE_STACKPROTECTOR_TLS=y
CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
CONFIG_CC_NO_ARRAY_BOUNDS=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_CMA=y
CONFIG_CMA_ALIGNMENT=9
CONFIG_CMA_AREAS=7
# CONFIG_CMA_DEBUG is not set
# CONFIG_CMA_DEBUGFS is not set
CONFIG_CMA_SIZE_MBYTES=256
# CONFIG_CMA_SIZE_SEL_MAX is not set
CONFIG_CMA_SIZE_SEL_MBYTES=y
# CONFIG_CMA_SIZE_SEL_MIN is not set
# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
# CONFIG_CMA_SYSFS is not set
CONFIG_CMDLINE="console=ttyS0,115200 earlyprintk nocache ignore_loglevel"
CONFIG_CMDLINE_FROM_BOOTLOADER=y
CONFIG_COMMON_CLK=y
CONFIG_COMMON_CLK_AT91=y
# CONFIG_COMPACTION is not set
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_CONFIGFS_FS=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_CONTIG_ALLOC=y
CONFIG_CPUFREQ_DT=y
CONFIG_CPUFREQ_DT_PLATDEV=y
CONFIG_CPU_32v6K=y
CONFIG_CPU_32v7=y
CONFIG_CPU_ABRT_EV7=y
CONFIG_CPU_CACHE_V7=y
CONFIG_CPU_CACHE_VIPT=y
CONFIG_CPU_COPY_V6=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
CONFIG_CPU_FREQ_GOV_ATTR_SET=y
CONFIG_CPU_FREQ_GOV_COMMON=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_STAT=y
CONFIG_CPU_HAS_ASID=y
CONFIG_CPU_LITTLE_ENDIAN=y
CONFIG_CPU_PABRT_V7=y
CONFIG_CPU_SPECTRE=y
# CONFIG_CPU_SW_DOMAIN_PAN is not set
CONFIG_CPU_THUMB_CAPABLE=y
CONFIG_CPU_TLB_V7=y
CONFIG_CPU_V7=y
CONFIG_CRC16=y
CONFIG_CRC_CCITT=y
CONFIG_CRC_ITU_T=y
CONFIG_CRYPTO_CMAC=y
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_DEFLATE=y
CONFIG_CRYPTO_DRBG=y
CONFIG_CRYPTO_DRBG_HMAC=y
CONFIG_CRYPTO_DRBG_MENU=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_ECC=y
CONFIG_CRYPTO_ECDH=y
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_JITTERENTROPY=y
CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
CONFIG_CRYPTO_LIB_SHA1=y
CONFIG_CRYPTO_LIB_SHA256=y
CONFIG_CRYPTO_LIB_UTILS=y
CONFIG_CRYPTO_LZO=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_RNG_DEFAULT=y
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=y
CONFIG_CURRENT_POINTER_IN_TPIDRURO=y
CONFIG_DCACHE_WORD_ACCESS=y
CONFIG_DEBUG_AT91_SAMA7G5_FLEXCOM3=y
CONFIG_DEBUG_AT91_UART=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_LL=y
CONFIG_DEBUG_LL_INCLUDE="debug/at91.S"
CONFIG_DEBUG_UART_PHYS=0xe1824200
CONFIG_DEBUG_UART_VIRT=0xe0824200
CONFIG_DEBUG_USER=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_DMADEVICES=y
CONFIG_DMATEST=y
CONFIG_DMA_CMA=y
CONFIG_DMA_ENGINE=y
CONFIG_DMA_ENGINE_RAID=y
CONFIG_DMA_OF=y
CONFIG_DMA_OPS=y
CONFIG_DTC=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_EARLY_PRINTK=y
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_EEPROM_AT24=y
# CONFIG_EFI_PARTITION is not set
CONFIG_EXCLUSIVE_SYSTEM_RAM=y
CONFIG_EXT4_FS=y
CONFIG_FANOTIFY=y
CONFIG_FAT_FS=y
CONFIG_FIXED_PHY=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_FS_IOMAP=y
CONFIG_FS_MBCACHE=y
CONFIG_FWNODE_MDIO=y
CONFIG_FW_LOADER_PAGED_BUF=y
CONFIG_FW_LOADER_SYSFS=y
CONFIG_GCC10_NO_ARRAY_BOUNDS=y
CONFIG_GCC_ASM_GOTO_OUTPUT_WORKAROUND=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_GENERIC_CPU_VULNERABILITIES=y
CONFIG_GENERIC_EARLY_IOREMAP=y
CONFIG_GENERIC_GETTIMEOFDAY=y
CONFIG_GENERIC_IDLE_POLL_SETUP=y
CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_PINCONF=y
CONFIG_GENERIC_PINCTRL_GROUPS=y
CONFIG_GENERIC_PINMUX_FUNCTIONS=y
CONFIG_GENERIC_SCHED_CLOCK=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_VDSO_32=y
CONFIG_GLOB=y
CONFIG_GPIOLIB_IRQCHIP=y
CONFIG_GPIO_CDEV=y
CONFIG_GRACE_PERIOD=y
# CONFIG_HARDEN_BRANCH_HISTORY is not set
# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAVE_SMP=y
CONFIG_HW_CONSOLE=y
CONFIG_HW_RANDOM=y
CONFIG_HZ_FIXED=0
CONFIG_I2C=y
CONFIG_I2C_AT91=y
# CONFIG_I2C_AT91_SLAVE_EXPERIMENTAL is not set
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_CHARDEV=y
CONFIG_IIO=y
CONFIG_IIO_BUFFER=y
CONFIG_IIO_CONFIGFS=y
# CONFIG_IIO_HRTIMER_TRIGGER is not set
CONFIG_IIO_KFIFO_BUF=y
CONFIG_IIO_SW_TRIGGER=y
# CONFIG_IIO_TIGHTLOOP_TRIGGER is not set
CONFIG_IIO_TRIGGER=y
CONFIG_IIO_TRIGGERED_BUFFER=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_INPUT=y
CONFIG_IP_PNP=y
# CONFIG_IP_PNP_BOOTP is not set
CONFIG_IP_PNP_DHCP=y
# CONFIG_IP_PNP_RARP is not set
CONFIG_IRQCHIP=y
CONFIG_IRQSTACKS=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_IRQ_WORK=y
CONFIG_JBD2=y
CONFIG_LEDS_GPIO=y
CONFIG_LIBFDT=y
CONFIG_LOCKD=y
CONFIG_LOCK_DEBUGGING_SUPPORT=y
CONFIG_LOG_BUF_SHIFT=16
CONFIG_LSM="N"
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_MACB=y
CONFIG_MACB_USE_HWSTAMP=y
# CONFIG_MCHP_EIC is not set
CONFIG_MDIO_BUS=y
CONFIG_MDIO_DEVICE=y
CONFIG_MDIO_DEVRES=y
CONFIG_MEDIA_CAMERA_SUPPORT=y
CONFIG_MEDIA_CONTROLLER=y
CONFIG_MEDIA_PLATFORM_SUPPORT=y
CONFIG_MEDIA_SUPPORT=y
CONFIG_MEDIA_SUPPORT_FILTER=y
CONFIG_MEMFD_CREATE=y
CONFIG_MEMORY=y
CONFIG_MEMORY_ISOLATION=y
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=7
CONFIG_MFD_AT91_USART=y
CONFIG_MFD_ATMEL_FLEXCOM=y
CONFIG_MFD_CORE=y
CONFIG_MFD_SYSCON=y
CONFIG_MICREL_PHY=y
CONFIG_MICROCHIP_CLOCKSOURCE_PIT64B=y
CONFIG_MICROCHIP_PIT64B=y
CONFIG_MIGHT_HAVE_CACHE_L2X0=y
CONFIG_MIGRATION=y
CONFIG_MMC=y
# CONFIG_MMC_ATMELMCI is not set
CONFIG_MMC_BLOCK=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_OF_AT91=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEED_PER_CPU_KM=y
CONFIG_NEON=y
CONFIG_NET_PTP_CLASSIFY=y
CONFIG_NET_SELFTESTS=y
CONFIG_NET_SWITCHDEV=y
CONFIG_NFS_FS=y
CONFIG_NLS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_CODEPAGE_850=y
CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_UTF8=y
CONFIG_NO_HZ_COMMON=y
CONFIG_NO_HZ_IDLE=y
CONFIG_NVMEM=y
CONFIG_NVMEM_LAYOUTS=y
# CONFIG_NVMEM_MICROCHIP_OTPC is not set
CONFIG_NVMEM_SYSFS=y
CONFIG_OF=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_FLATTREE=y
CONFIG_OF_GPIO=y
CONFIG_OF_IRQ=y
CONFIG_OF_KOBJ=y
CONFIG_OF_MDIO=y
CONFIG_OLD_SIGACTION=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_PAGE_POOL=y
CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
CONFIG_PAHOLE_HAS_LANG_EXCLUDE=y
CONFIG_PCCARD=y
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PGTABLE_LEVELS=2
CONFIG_PHYLIB=y
CONFIG_PHYLIB_LEDS=y
CONFIG_PHYLINK=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_AT91=y
CONFIG_PINCTRL_AT91PIO4=y
CONFIG_PM_OPP=y
CONFIG_POWER_RESET=y
# CONFIG_POWER_RESET_AT91_POWEROFF is not set
CONFIG_POWER_RESET_AT91_RESET=y
CONFIG_POWER_RESET_AT91_SAMA5D2_SHDWC=y
CONFIG_PPS=y
CONFIG_PREEMPT_NONE_BUILD=y
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
CONFIG_PRINTK_TIME=y
CONFIG_PTP_1588_CLOCK=y
CONFIG_PTP_1588_CLOCK_OPTIONAL=y
CONFIG_PWM=y
CONFIG_PWM_ATMEL=y
CONFIG_PWM_SYSFS=y
CONFIG_RANDSTRUCT_NONE=y
CONFIG_RATIONAL=y
CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=y
CONFIG_REGMAP_MMIO=y
CONFIG_REGMAP_SPI=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_REGULATOR_MCP16502=y
CONFIG_ROOT_NFS=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_AT91RM9200=y
CONFIG_RTC_DRV_AT91SAM9=y
CONFIG_RTC_I2C_AND_SPI=y
CONFIG_RTC_MC146818_LIB=y
# CONFIG_RUNTIME_TESTING_MENU is not set
CONFIG_SAMA5D4_WATCHDOG=y
CONFIG_SCSI=y
CONFIG_SCSI_COMMON=y
# CONFIG_SERIAL_8250 is not set
CONFIG_SERIAL_ATMEL=y
CONFIG_SERIAL_ATMEL_CONSOLE=y
CONFIG_SERIAL_ATMEL_PDC=y
# CONFIG_SERIAL_ATMEL_TTYAT is not set
CONFIG_SERIAL_MCTRL_GPIO=y
CONFIG_SGL_ALLOC=y
CONFIG_SG_POOL=y
CONFIG_SND=y
CONFIG_SND_ATMEL_SOC=y
# CONFIG_SND_ATMEL_SOC_CLASSD is not set
# CONFIG_SND_ATMEL_SOC_I2S is not set
# CONFIG_SND_ATMEL_SOC_PDMIC is not set
# CONFIG_SND_COMPRESS_OFFLOAD is not set
CONFIG_SND_DMAENGINE_PCM=y
CONFIG_SND_JACK=y
CONFIG_SND_JACK_INPUT_DEV=y
CONFIG_SND_MCHP_SOC_I2S_MCC=y
# CONFIG_SND_MCHP_SOC_PDMC is not set
CONFIG_SND_MCHP_SOC_SPDIFRX=y
CONFIG_SND_MCHP_SOC_SPDIFTX=y
CONFIG_SND_PCM=y
CONFIG_SND_SIMPLE_CARD=y
CONFIG_SND_SIMPLE_CARD_UTILS=y
CONFIG_SND_SOC=y
CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM=y
CONFIG_SND_SOC_I2C_AND_SPI=y
# CONFIG_SND_SOC_MIKROE_PROTO is not set
CONFIG_SND_SOC_PCM5102A=y
CONFIG_SND_SOC_SPDIF=y
CONFIG_SOC_BUS=y
# CONFIG_SOC_LAN966 is not set
# CONFIG_SOC_SAMA5D2 is not set
# CONFIG_SOC_SAMA5D3 is not set
# CONFIG_SOC_SAMA5D4 is not set
CONFIG_SOC_SAMA7=y
CONFIG_SOC_SAMA7G5=y
CONFIG_SOC_SAM_V7=y
CONFIG_SOFTIRQ_ON_OWN_STACK=y
CONFIG_SOUND=y
CONFIG_SOUND_OSS_CORE=y
CONFIG_SPARSE_IRQ=y
CONFIG_SPI=y
# CONFIG_SPI_AT91_USART is not set
CONFIG_SPI_ATMEL=y
# CONFIG_SPI_ATMEL_QUADSPI is not set
CONFIG_SPI_MASTER=y
CONFIG_SPI_MEM=y
CONFIG_SRCU=y
CONFIG_STACKTRACE=y
# CONFIG_STANDALONE is not set
CONFIG_SUNRPC=y
# CONFIG_SWAP is not set
CONFIG_SWPHY=y
# CONFIG_SWP_EMULATE is not set
CONFIG_SYSFS_DEPRECATED=y
CONFIG_SYSFS_DEPRECATED_V2=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_THREAD_INFO_IN_TASK=y
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_TIMER_OF=y
CONFIG_TIMER_PROBE=y
CONFIG_TINY_SRCU=y
CONFIG_UACCESS_WITH_MEMCPY=y
CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
CONFIG_UNWINDER_ARM=y
CONFIG_USE_OF=y
CONFIG_VFAT_FS=y
CONFIG_VFP=y
CONFIG_VFPv3=y
# CONFIG_VIDEO_ATMEL_XISC is not set
CONFIG_VIDEO_DEV=y
# CONFIG_VIDEO_MICROCHIP_CSI2DC is not set
CONFIG_VIDEO_V4L2_I2C=y
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
CONFIG_WATCHDOG_CORE=y
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZLIB_DEFLATE=y
CONFIG_ZLIB_INFLATE=y

352
target/linux/generic/backport-6.1/020-v6.3-01-UPSTREAM-mm-multi-gen-LRU-rename-lru_gen_struct-to-l.patch
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@@ -1,352 +0,0 @@
From 8c20e2eb5f2a0175b774134685e4d7bd93e85ff8 Mon Sep 17 00:00:00 2001
From: Yu Zhao <yuzhao@google.com>
Date: Wed, 21 Dec 2022 21:18:59 -0700
Subject: [PATCH 01/19] UPSTREAM: mm: multi-gen LRU: rename lru_gen_struct to
lru_gen_folio
Patch series "mm: multi-gen LRU: memcg LRU", v3.
Overview
========
An memcg LRU is a per-node LRU of memcgs. It is also an LRU of LRUs,
since each node and memcg combination has an LRU of folios (see
mem_cgroup_lruvec()).
Its goal is to improve the scalability of global reclaim, which is
critical to system-wide memory overcommit in data centers. Note that
memcg reclaim is currently out of scope.
Its memory bloat is a pointer to each lruvec and negligible to each
pglist_data. In terms of traversing memcgs during global reclaim, it
improves the best-case complexity from O(n) to O(1) and does not affect
the worst-case complexity O(n). Therefore, on average, it has a sublinear
complexity in contrast to the current linear complexity.
The basic structure of an memcg LRU can be understood by an analogy to
the active/inactive LRU (of folios):
1. It has the young and the old (generations), i.e., the counterparts
to the active and the inactive;
2. The increment of max_seq triggers promotion, i.e., the counterpart
to activation;
3. Other events trigger similar operations, e.g., offlining an memcg
triggers demotion, i.e., the counterpart to deactivation.
In terms of global reclaim, it has two distinct features:
1. Sharding, which allows each thread to start at a random memcg (in
the old generation) and improves parallelism;
2. Eventual fairness, which allows direct reclaim to bail out at will
and reduces latency without affecting fairness over some time.
The commit message in patch 6 details the workflow:
https://lore.kernel.org/r/20221222041905.2431096-7-yuzhao@google.com/
The following is a simple test to quickly verify its effectiveness.
Test design:
1. Create multiple memcgs.
2. Each memcg contains a job (fio).
3. All jobs access the same amount of memory randomly.
4. The system does not experience global memory pressure.
5. Periodically write to the root memory.reclaim.
Desired outcome:
1. All memcgs have similar pgsteal counts, i.e., stddev(pgsteal)
over mean(pgsteal) is close to 0%.
2. The total pgsteal is close to the total requested through
memory.reclaim, i.e., sum(pgsteal) over sum(requested) is close
to 100%.
Actual outcome [1]:
MGLRU off MGLRU on
stddev(pgsteal) / mean(pgsteal) 75% 20%
sum(pgsteal) / sum(requested) 425% 95%
####################################################################
MEMCGS=128
for ((memcg = 0; memcg < $MEMCGS; memcg++)); do
mkdir /sys/fs/cgroup/memcg$memcg
done
start() {
echo $BASHPID > /sys/fs/cgroup/memcg$memcg/cgroup.procs
fio -name=memcg$memcg --numjobs=1 --ioengine=mmap \
--filename=/dev/zero --size=1920M --rw=randrw \
--rate=64m,64m --random_distribution=random \
--fadvise_hint=0 --time_based --runtime=10h \
--group_reporting --minimal
}
for ((memcg = 0; memcg < $MEMCGS; memcg++)); do
start &
done
sleep 600
for ((i = 0; i < 600; i++)); do
echo 256m >/sys/fs/cgroup/memory.reclaim
sleep 6
done
for ((memcg = 0; memcg < $MEMCGS; memcg++)); do
grep "pgsteal " /sys/fs/cgroup/memcg$memcg/memory.stat
done
####################################################################
[1]: This was obtained from running the above script (touches less
than 256GB memory) on an EPYC 7B13 with 512GB DRAM for over an
hour.
This patch (of 8):
The new name lru_gen_folio will be more distinct from the coming
lru_gen_memcg.
Link: https://lkml.kernel.org/r/20221222041905.2431096-1-yuzhao@google.com
Link: https://lkml.kernel.org/r/20221222041905.2431096-2-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michael Larabel <Michael@MichaelLarabel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Bug: 274865848
(cherry picked from commit 391655fe08d1f942359a11148aa9aaf3f99d6d6f)
Change-Id: I7df67e0e2435ba28f10eaa57d28d98b61a9210a6
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
include/linux/mm_inline.h | 4 ++--
include/linux/mmzone.h | 6 +++---
mm/vmscan.c | 34 +++++++++++++++++-----------------
mm/workingset.c | 4 ++--
4 files changed, 24 insertions(+), 24 deletions(-)
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -178,7 +178,7 @@ static inline void lru_gen_update_size(s
int zone = folio_zonenum(folio);
int delta = folio_nr_pages(folio);
enum lru_list lru = type * LRU_INACTIVE_FILE;
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
VM_WARN_ON_ONCE(old_gen != -1 && old_gen >= MAX_NR_GENS);
VM_WARN_ON_ONCE(new_gen != -1 && new_gen >= MAX_NR_GENS);
@@ -224,7 +224,7 @@ static inline bool lru_gen_add_folio(str
int gen = folio_lru_gen(folio);
int type = folio_is_file_lru(folio);
int zone = folio_zonenum(folio);
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
VM_WARN_ON_ONCE_FOLIO(gen != -1, folio);
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -404,7 +404,7 @@ enum {
* The number of pages in each generation is eventually consistent and therefore
* can be transiently negative when reset_batch_size() is pending.
*/
-struct lru_gen_struct {
+struct lru_gen_folio {
/* the aging increments the youngest generation number */
unsigned long max_seq;
/* the eviction increments the oldest generation numbers */
@@ -461,7 +461,7 @@ struct lru_gen_mm_state {
struct lru_gen_mm_walk {
/* the lruvec under reclaim */
struct lruvec *lruvec;
- /* unstable max_seq from lru_gen_struct */
+ /* unstable max_seq from lru_gen_folio */
unsigned long max_seq;
/* the next address within an mm to scan */
unsigned long next_addr;
@@ -524,7 +524,7 @@ struct lruvec {
unsigned long flags;
#ifdef CONFIG_LRU_GEN
/* evictable pages divided into generations */
- struct lru_gen_struct lrugen;
+ struct lru_gen_folio lrugen;
/* to concurrently iterate lru_gen_mm_list */
struct lru_gen_mm_state mm_state;
#endif
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3190,7 +3190,7 @@ static int get_nr_gens(struct lruvec *lr
static bool __maybe_unused seq_is_valid(struct lruvec *lruvec)
{
- /* see the comment on lru_gen_struct */
+ /* see the comment on lru_gen_folio */
return get_nr_gens(lruvec, LRU_GEN_FILE) >= MIN_NR_GENS &&
get_nr_gens(lruvec, LRU_GEN_FILE) <= get_nr_gens(lruvec, LRU_GEN_ANON) &&
get_nr_gens(lruvec, LRU_GEN_ANON) <= MAX_NR_GENS;
@@ -3596,7 +3596,7 @@ struct ctrl_pos {
static void read_ctrl_pos(struct lruvec *lruvec, int type, int tier, int gain,
struct ctrl_pos *pos)
{
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
int hist = lru_hist_from_seq(lrugen->min_seq[type]);
pos->refaulted = lrugen->avg_refaulted[type][tier] +
@@ -3611,7 +3611,7 @@ static void read_ctrl_pos(struct lruvec
static void reset_ctrl_pos(struct lruvec *lruvec, int type, bool carryover)
{
int hist, tier;
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
bool clear = carryover ? NR_HIST_GENS == 1 : NR_HIST_GENS > 1;
unsigned long seq = carryover ? lrugen->min_seq[type] : lrugen->max_seq + 1;
@@ -3688,7 +3688,7 @@ static int folio_update_gen(struct folio
static int folio_inc_gen(struct lruvec *lruvec, struct folio *folio, bool reclaiming)
{
int type = folio_is_file_lru(folio);
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
int new_gen, old_gen = lru_gen_from_seq(lrugen->min_seq[type]);
unsigned long new_flags, old_flags = READ_ONCE(folio->flags);
@@ -3733,7 +3733,7 @@ static void update_batch_size(struct lru
static void reset_batch_size(struct lruvec *lruvec, struct lru_gen_mm_walk *walk)
{
int gen, type, zone;
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
walk->batched = 0;
@@ -4250,7 +4250,7 @@ static bool inc_min_seq(struct lruvec *l
{
int zone;
int remaining = MAX_LRU_BATCH;
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
int new_gen, old_gen = lru_gen_from_seq(lrugen->min_seq[type]);
if (type == LRU_GEN_ANON && !can_swap)
@@ -4286,7 +4286,7 @@ static bool try_to_inc_min_seq(struct lr
{
int gen, type, zone;
bool success = false;
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
DEFINE_MIN_SEQ(lruvec);
VM_WARN_ON_ONCE(!seq_is_valid(lruvec));
@@ -4307,7 +4307,7 @@ next:
;
}
- /* see the comment on lru_gen_struct */
+ /* see the comment on lru_gen_folio */
if (can_swap) {
min_seq[LRU_GEN_ANON] = min(min_seq[LRU_GEN_ANON], min_seq[LRU_GEN_FILE]);
min_seq[LRU_GEN_FILE] = max(min_seq[LRU_GEN_ANON], lrugen->min_seq[LRU_GEN_FILE]);
@@ -4329,7 +4329,7 @@ static void inc_max_seq(struct lruvec *l
{
int prev, next;
int type, zone;
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
restart:
spin_lock_irq(&lruvec->lru_lock);
@@ -4389,7 +4389,7 @@ static bool try_to_inc_max_seq(struct lr
bool success;
struct lru_gen_mm_walk *walk;
struct mm_struct *mm = NULL;
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
VM_WARN_ON_ONCE(max_seq > READ_ONCE(lrugen->max_seq));
@@ -4454,7 +4454,7 @@ static bool should_run_aging(struct lruv
unsigned long old = 0;
unsigned long young = 0;
unsigned long total = 0;
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
struct mem_cgroup *memcg = lruvec_memcg(lruvec);
for (type = !can_swap; type < ANON_AND_FILE; type++) {
@@ -4740,7 +4740,7 @@ static bool sort_folio(struct lruvec *lr
int delta = folio_nr_pages(folio);
int refs = folio_lru_refs(folio);
int tier = lru_tier_from_refs(refs);
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
VM_WARN_ON_ONCE_FOLIO(gen >= MAX_NR_GENS, folio);
@@ -4848,7 +4848,7 @@ static int scan_folios(struct lruvec *lr
int scanned = 0;
int isolated = 0;
int remaining = MAX_LRU_BATCH;
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
struct mem_cgroup *memcg = lruvec_memcg(lruvec);
VM_WARN_ON_ONCE(!list_empty(list));
@@ -5248,7 +5248,7 @@ done:
static bool __maybe_unused state_is_valid(struct lruvec *lruvec)
{
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
if (lrugen->enabled) {
enum lru_list lru;
@@ -5530,7 +5530,7 @@ static void lru_gen_seq_show_full(struct
int i;
int type, tier;
int hist = lru_hist_from_seq(seq);
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
for (tier = 0; tier < MAX_NR_TIERS; tier++) {
seq_printf(m, " %10d", tier);
@@ -5580,7 +5580,7 @@ static int lru_gen_seq_show(struct seq_f
unsigned long seq;
bool full = !debugfs_real_fops(m->file)->write;
struct lruvec *lruvec = v;
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
int nid = lruvec_pgdat(lruvec)->node_id;
struct mem_cgroup *memcg = lruvec_memcg(lruvec);
DEFINE_MAX_SEQ(lruvec);
@@ -5834,7 +5834,7 @@ void lru_gen_init_lruvec(struct lruvec *
{
int i;
int gen, type, zone;
- struct lru_gen_struct *lrugen = &lruvec->lrugen;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
lrugen->max_seq = MIN_NR_GENS + 1;
lrugen->enabled = lru_gen_enabled();
--- a/mm/workingset.c
+++ b/mm/workingset.c
@@ -223,7 +223,7 @@ static void *lru_gen_eviction(struct fol
unsigned long token;
unsigned long min_seq;
struct lruvec *lruvec;
- struct lru_gen_struct *lrugen;
+ struct lru_gen_folio *lrugen;
int type = folio_is_file_lru(folio);
int delta = folio_nr_pages(folio);
int refs = folio_lru_refs(folio);
@@ -252,7 +252,7 @@ static void lru_gen_refault(struct folio
unsigned long token;
unsigned long min_seq;
struct lruvec *lruvec;
- struct lru_gen_struct *lrugen;
+ struct lru_gen_folio *lrugen;
struct mem_cgroup *memcg;
struct pglist_data *pgdat;
int type = folio_is_file_lru(folio);

192
target/linux/generic/backport-6.1/020-v6.3-03-UPSTREAM-mm-multi-gen-LRU-remove-eviction-fairness-s.patch
View File

@@ -1,192 +0,0 @@
From 14f9a7a15f3d1af351f30e0438fd747b7ac253b0 Mon Sep 17 00:00:00 2001
From: Yu Zhao <yuzhao@google.com>
Date: Wed, 21 Dec 2022 21:19:01 -0700
Subject: [PATCH 03/19] UPSTREAM: mm: multi-gen LRU: remove eviction fairness
safeguard
Recall that the eviction consumes the oldest generation: first it
bucket-sorts folios whose gen counters were updated by the aging and
reclaims the rest; then it increments lrugen->min_seq.
The current eviction fairness safeguard for global reclaim has a
dilemma: when there are multiple eligible memcgs, should it continue
or stop upon meeting the reclaim goal? If it continues, it overshoots
and increases direct reclaim latency; if it stops, it loses fairness
between memcgs it has taken memory away from and those it has yet to.
With memcg LRU, the eviction, while ensuring eventual fairness, will
stop upon meeting its goal. Therefore the current eviction fairness
safeguard for global reclaim will not be needed.
Note that memcg LRU only applies to global reclaim. For memcg reclaim,
the eviction will continue, even if it is overshooting. This becomes
unconditional due to code simplification.
Link: https://lkml.kernel.org/r/20221222041905.2431096-4-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michael Larabel <Michael@MichaelLarabel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Bug: 274865848
(cherry picked from commit a579086c99ed70cc4bfc104348dbe3dd8f2787e6)
Change-Id: I08ac1b3c90e29cafd0566785aaa4bcdb5db7d22c
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
mm/vmscan.c | 81 +++++++++++++++--------------------------------------
1 file changed, 23 insertions(+), 58 deletions(-)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -448,6 +448,11 @@ static bool cgroup_reclaim(struct scan_c
return sc->target_mem_cgroup;
}
+static bool global_reclaim(struct scan_control *sc)
+{
+ return !sc->target_mem_cgroup || mem_cgroup_is_root(sc->target_mem_cgroup);
+}
+
/**
* writeback_throttling_sane - is the usual dirty throttling mechanism available?
* @sc: scan_control in question
@@ -498,6 +503,11 @@ static bool cgroup_reclaim(struct scan_c
return false;
}
+static bool global_reclaim(struct scan_control *sc)
+{
+ return true;
+}
+
static bool writeback_throttling_sane(struct scan_control *sc)
{
return true;
@@ -5005,8 +5015,7 @@ static int isolate_folios(struct lruvec
return scanned;
}
-static int evict_folios(struct lruvec *lruvec, struct scan_control *sc, int swappiness,
- bool *need_swapping)
+static int evict_folios(struct lruvec *lruvec, struct scan_control *sc, int swappiness)
{
int type;
int scanned;
@@ -5094,9 +5103,6 @@ retry:
goto retry;
}
- if (need_swapping && type == LRU_GEN_ANON)
- *need_swapping = true;
-
return scanned;
}
@@ -5135,67 +5141,26 @@ done:
return min_seq[!can_swap] + MIN_NR_GENS <= max_seq ? nr_to_scan : 0;
}
-static bool should_abort_scan(struct lruvec *lruvec, unsigned long seq,
- struct scan_control *sc, bool need_swapping)
+static unsigned long get_nr_to_reclaim(struct scan_control *sc)
{
- int i;
- DEFINE_MAX_SEQ(lruvec);
-
- if (!current_is_kswapd()) {
- /* age each memcg at most once to ensure fairness */
- if (max_seq - seq > 1)
- return true;
-
- /* over-swapping can increase allocation latency */
- if (sc->nr_reclaimed >= sc->nr_to_reclaim && need_swapping)
- return true;
-
- /* give this thread a chance to exit and free its memory */
- if (fatal_signal_pending(current)) {
- sc->nr_reclaimed += MIN_LRU_BATCH;
- return true;
- }
-
- if (cgroup_reclaim(sc))
- return false;
- } else if (sc->nr_reclaimed - sc->last_reclaimed < sc->nr_to_reclaim)
- return false;
-
- /* keep scanning at low priorities to ensure fairness */
- if (sc->priority > DEF_PRIORITY - 2)
- return false;
-
- /*
- * A minimum amount of work was done under global memory pressure. For
- * kswapd, it may be overshooting. For direct reclaim, the allocation
- * may succeed if all suitable zones are somewhat safe. In either case,
- * it's better to stop now, and restart later if necessary.
- */
- for (i = 0; i <= sc->reclaim_idx; i++) {
- unsigned long wmark;
- struct zone *zone = lruvec_pgdat(lruvec)->node_zones + i;
-
- if (!managed_zone(zone))
- continue;
-
- wmark = current_is_kswapd() ? high_wmark_pages(zone) : low_wmark_pages(zone);
- if (wmark > zone_page_state(zone, NR_FREE_PAGES))
- return false;
- }
+ /* don't abort memcg reclaim to ensure fairness */
+ if (!global_reclaim(sc))
+ return -1;
- sc->nr_reclaimed += MIN_LRU_BATCH;
+ /* discount the previous progress for kswapd */
+ if (current_is_kswapd())
+ return sc->nr_to_reclaim + sc->last_reclaimed;
- return true;
+ return max(sc->nr_to_reclaim, compact_gap(sc->order));
}
static void lru_gen_shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc)
{
struct blk_plug plug;
bool need_aging = false;
- bool need_swapping = false;
unsigned long scanned = 0;
unsigned long reclaimed = sc->nr_reclaimed;
- DEFINE_MAX_SEQ(lruvec);
+ unsigned long nr_to_reclaim = get_nr_to_reclaim(sc);
lru_add_drain();
@@ -5219,7 +5184,7 @@ static void lru_gen_shrink_lruvec(struct
if (!nr_to_scan)
goto done;
- delta = evict_folios(lruvec, sc, swappiness, &need_swapping);
+ delta = evict_folios(lruvec, sc, swappiness);
if (!delta)
goto done;
@@ -5227,7 +5192,7 @@ static void lru_gen_shrink_lruvec(struct
if (scanned >= nr_to_scan)
break;
- if (should_abort_scan(lruvec, max_seq, sc, need_swapping))
+ if (sc->nr_reclaimed >= nr_to_reclaim)
break;
cond_resched();
@@ -5677,7 +5642,7 @@ static int run_eviction(struct lruvec *l
if (sc->nr_reclaimed >= nr_to_reclaim)
return 0;
- if (!evict_folios(lruvec, sc, swappiness, NULL))
+ if (!evict_folios(lruvec, sc, swappiness))
return 0;
cond_resched();

294
target/linux/generic/backport-6.1/020-v6.3-04-BACKPORT-mm-multi-gen-LRU-remove-aging-fairness-safe.patch
View File

@@ -1,294 +0,0 @@
From f3c93d2e37a3c56593d7ccf4f4bcf1b58426fdd8 Mon Sep 17 00:00:00 2001
From: Yu Zhao <yuzhao@google.com>
Date: Wed, 21 Dec 2022 21:19:02 -0700
Subject: [PATCH 04/19] BACKPORT: mm: multi-gen LRU: remove aging fairness
safeguard
Recall that the aging produces the youngest generation: first it scans
for accessed folios and updates their gen counters; then it increments
lrugen->max_seq.
The current aging fairness safeguard for kswapd uses two passes to
ensure the fairness to multiple eligible memcgs. On the first pass,
which is shared with the eviction, it checks whether all eligible
memcgs are low on cold folios. If so, it requires a second pass, on
which it ages all those memcgs at the same time.
With memcg LRU, the aging, while ensuring eventual fairness, will run
when necessary. Therefore the current aging fairness safeguard for
kswapd will not be needed.
Note that memcg LRU only applies to global reclaim. For memcg reclaim,
the aging can be unfair to different memcgs, i.e., their
lrugen->max_seq can be incremented at different paces.
Link: https://lkml.kernel.org/r/20221222041905.2431096-5-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michael Larabel <Michael@MichaelLarabel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Bug: 274865848
(cherry picked from commit 7348cc91821b0cb24dfb00e578047f68299a50ab)
[TJ: Resolved conflicts with older function signatures for
min_cgroup_below_min / min_cgroup_below_low]
Change-Id: I6e36ecfbaaefbc0a56d9a9d5d7cbe404ed7f57a5
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
mm/vmscan.c | 126 ++++++++++++++++++++++++----------------------------
1 file changed, 59 insertions(+), 67 deletions(-)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -136,7 +136,6 @@ struct scan_control {
#ifdef CONFIG_LRU_GEN
/* help kswapd make better choices among multiple memcgs */
- unsigned int memcgs_need_aging:1;
unsigned long last_reclaimed;
#endif
@@ -4457,7 +4456,7 @@ done:
return true;
}
-static bool should_run_aging(struct lruvec *lruvec, unsigned long max_seq, unsigned long *min_seq,
+static bool should_run_aging(struct lruvec *lruvec, unsigned long max_seq,
struct scan_control *sc, bool can_swap, unsigned long *nr_to_scan)
{
int gen, type, zone;
@@ -4466,6 +4465,13 @@ static bool should_run_aging(struct lruv
unsigned long total = 0;
struct lru_gen_folio *lrugen = &lruvec->lrugen;
struct mem_cgroup *memcg = lruvec_memcg(lruvec);
+ DEFINE_MIN_SEQ(lruvec);
+
+ /* whether this lruvec is completely out of cold folios */
+ if (min_seq[!can_swap] + MIN_NR_GENS > max_seq) {
+ *nr_to_scan = 0;
+ return true;
+ }
for (type = !can_swap; type < ANON_AND_FILE; type++) {
unsigned long seq;
@@ -4494,8 +4500,6 @@ static bool should_run_aging(struct lruv
* stalls when the number of generations reaches MIN_NR_GENS. Hence, the
* ideal number of generations is MIN_NR_GENS+1.
*/
- if (min_seq[!can_swap] + MIN_NR_GENS > max_seq)
- return true;
if (min_seq[!can_swap] + MIN_NR_GENS < max_seq)
return false;
@@ -4514,40 +4518,54 @@ static bool should_run_aging(struct lruv
return false;
}
-static bool age_lruvec(struct lruvec *lruvec, struct scan_control *sc, unsigned long min_ttl)
+static bool lruvec_is_sizable(struct lruvec *lruvec, struct scan_control *sc)
{
- bool need_aging;
- unsigned long nr_to_scan;
- int swappiness = get_swappiness(lruvec, sc);
+ int gen, type, zone;
+ unsigned long total = 0;
+ bool can_swap = get_swappiness(lruvec, sc);
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
struct mem_cgroup *memcg = lruvec_memcg(lruvec);
DEFINE_MAX_SEQ(lruvec);
DEFINE_MIN_SEQ(lruvec);
- VM_WARN_ON_ONCE(sc->memcg_low_reclaim);
+ for (type = !can_swap; type < ANON_AND_FILE; type++) {
+ unsigned long seq;
- mem_cgroup_calculate_protection(NULL, memcg);
+ for (seq = min_seq[type]; seq <= max_seq; seq++) {
+ gen = lru_gen_from_seq(seq);
- if (mem_cgroup_below_min(memcg))
- return false;
+ for (zone = 0; zone < MAX_NR_ZONES; zone++)
+ total += max(READ_ONCE(lrugen->nr_pages[gen][type][zone]), 0L);
+ }
+ }
- need_aging = should_run_aging(lruvec, max_seq, min_seq, sc, swappiness, &nr_to_scan);
+ /* whether the size is big enough to be helpful */
+ return mem_cgroup_online(memcg) ? (total >> sc->priority) : total;
+}
- if (min_ttl) {
- int gen = lru_gen_from_seq(min_seq[LRU_GEN_FILE]);
- unsigned long birth = READ_ONCE(lruvec->lrugen.timestamps[gen]);
+static bool lruvec_is_reclaimable(struct lruvec *lruvec, struct scan_control *sc,
+ unsigned long min_ttl)
+{
+ int gen;
+ unsigned long birth;
+ struct mem_cgroup *memcg = lruvec_memcg(lruvec);
+ DEFINE_MIN_SEQ(lruvec);
- if (time_is_after_jiffies(birth + min_ttl))
- return false;
+ VM_WARN_ON_ONCE(sc->memcg_low_reclaim);
- /* the size is likely too small to be helpful */
- if (!nr_to_scan && sc->priority != DEF_PRIORITY)
- return false;
- }
+ /* see the comment on lru_gen_folio */
+ gen = lru_gen_from_seq(min_seq[LRU_GEN_FILE]);
+ birth = READ_ONCE(lruvec->lrugen.timestamps[gen]);
- if (need_aging)
- try_to_inc_max_seq(lruvec, max_seq, sc, swappiness, false);
+ if (time_is_after_jiffies(birth + min_ttl))
+ return false;
- return true;
+ if (!lruvec_is_sizable(lruvec, sc))
+ return false;
+
+ mem_cgroup_calculate_protection(NULL, memcg);
+
+ return !mem_cgroup_below_min(memcg);
}
/* to protect the working set of the last N jiffies */
@@ -4556,46 +4574,32 @@ static unsigned long lru_gen_min_ttl __r
static void lru_gen_age_node(struct pglist_data *pgdat, struct scan_control *sc)
{
struct mem_cgroup *memcg;
- bool success = false;
unsigned long min_ttl = READ_ONCE(lru_gen_min_ttl);
VM_WARN_ON_ONCE(!current_is_kswapd());
sc->last_reclaimed = sc->nr_reclaimed;
- /*
- * To reduce the chance of going into the aging path, which can be
- * costly, optimistically skip it if the flag below was cleared in the
- * eviction path. This improves the overall performance when multiple
- * memcgs are available.
- */
- if (!sc->memcgs_need_aging) {
- sc->memcgs_need_aging = true;
+ /* check the order to exclude compaction-induced reclaim */
+ if (!min_ttl || sc->order || sc->priority == DEF_PRIORITY)
return;
- }
-
- set_mm_walk(pgdat);
memcg = mem_cgroup_iter(NULL, NULL, NULL);
do {
struct lruvec *lruvec = mem_cgroup_lruvec(memcg, pgdat);
- if (age_lruvec(lruvec, sc, min_ttl))
- success = true;
+ if (lruvec_is_reclaimable(lruvec, sc, min_ttl)) {
+ mem_cgroup_iter_break(NULL, memcg);
+ return;
+ }
cond_resched();
} while ((memcg = mem_cgroup_iter(NULL, memcg, NULL)));
- clear_mm_walk();
-
- /* check the order to exclude compaction-induced reclaim */
- if (success || !min_ttl || sc->order)
- return;
-
/*
* The main goal is to OOM kill if every generation from all memcgs is
* younger than min_ttl. However, another possibility is all memcgs are
- * either below min or empty.
+ * either too small or below min.
*/
if (mutex_trylock(&oom_lock)) {
struct oom_control oc = {
@@ -5112,33 +5116,27 @@ retry:
* reclaim.
*/
static unsigned long get_nr_to_scan(struct lruvec *lruvec, struct scan_control *sc,
- bool can_swap, bool *need_aging)
+ bool can_swap)
{
unsigned long nr_to_scan;
struct mem_cgroup *memcg = lruvec_memcg(lruvec);
DEFINE_MAX_SEQ(lruvec);
- DEFINE_MIN_SEQ(lruvec);
if (mem_cgroup_below_min(memcg) ||
(mem_cgroup_below_low(memcg) && !sc->memcg_low_reclaim))
return 0;
- *need_aging = should_run_aging(lruvec, max_seq, min_seq, sc, can_swap, &nr_to_scan);
- if (!*need_aging)
+ if (!should_run_aging(lruvec, max_seq, sc, can_swap, &nr_to_scan))
return nr_to_scan;
/* skip the aging path at the default priority */
if (sc->priority == DEF_PRIORITY)
- goto done;
+ return nr_to_scan;
- /* leave the work to lru_gen_age_node() */
- if (current_is_kswapd())
- return 0;
+ try_to_inc_max_seq(lruvec, max_seq, sc, can_swap, false);
- if (try_to_inc_max_seq(lruvec, max_seq, sc, can_swap, false))
- return nr_to_scan;
-done:
- return min_seq[!can_swap] + MIN_NR_GENS <= max_seq ? nr_to_scan : 0;
+ /* skip this lruvec as it's low on cold folios */
+ return 0;
}
static unsigned long get_nr_to_reclaim(struct scan_control *sc)
@@ -5157,9 +5155,7 @@ static unsigned long get_nr_to_reclaim(s
static void lru_gen_shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc)
{
struct blk_plug plug;
- bool need_aging = false;
unsigned long scanned = 0;
- unsigned long reclaimed = sc->nr_reclaimed;
unsigned long nr_to_reclaim = get_nr_to_reclaim(sc);
lru_add_drain();
@@ -5180,13 +5176,13 @@ static void lru_gen_shrink_lruvec(struct
else
swappiness = 0;
- nr_to_scan = get_nr_to_scan(lruvec, sc, swappiness, &need_aging);
+ nr_to_scan = get_nr_to_scan(lruvec, sc, swappiness);
if (!nr_to_scan)
- goto done;
+ break;
delta = evict_folios(lruvec, sc, swappiness);
if (!delta)
- goto done;
+ break;
scanned += delta;
if (scanned >= nr_to_scan)
@@ -5198,10 +5194,6 @@ static void lru_gen_shrink_lruvec(struct
cond_resched();
}
- /* see the comment in lru_gen_age_node() */
- if (sc->nr_reclaimed - reclaimed >= MIN_LRU_BATCH && !need_aging)
- sc->memcgs_need_aging = false;
-done:
clear_mm_walk();
blk_finish_plug(&plug);

166
target/linux/generic/backport-6.1/020-v6.3-05-UPSTREAM-mm-multi-gen-LRU-shuffle-should_run_aging.patch
View File

@@ -1,166 +0,0 @@
From eca3858631e0cbad2ca6e40f788892749428e4cb Mon Sep 17 00:00:00 2001
From: Yu Zhao <yuzhao@google.com>
Date: Wed, 21 Dec 2022 21:19:03 -0700
Subject: [PATCH 05/19] UPSTREAM: mm: multi-gen LRU: shuffle should_run_aging()
Move should_run_aging() next to its only caller left.
Link: https://lkml.kernel.org/r/20221222041905.2431096-6-yuzhao@google.com
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michael Larabel <Michael@MichaelLarabel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Bug: 274865848
(cherry picked from commit 77d4459a4a1a472b7309e475f962dda87d950abd)
Signed-off-by: T.J. Mercier <tjmercier@google.com>
Change-Id: I3b0383fe16b93a783b4d8c0b3a0b325160392576
Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
mm/vmscan.c | 124 ++++++++++++++++++++++++++--------------------------
1 file changed, 62 insertions(+), 62 deletions(-)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4456,68 +4456,6 @@ done:
return true;
}
-static bool should_run_aging(struct lruvec *lruvec, unsigned long max_seq,
- struct scan_control *sc, bool can_swap, unsigned long *nr_to_scan)
-{
- int gen, type, zone;
- unsigned long old = 0;
- unsigned long young = 0;
- unsigned long total = 0;
- struct lru_gen_folio *lrugen = &lruvec->lrugen;
- struct mem_cgroup *memcg = lruvec_memcg(lruvec);
- DEFINE_MIN_SEQ(lruvec);
-
- /* whether this lruvec is completely out of cold folios */
- if (min_seq[!can_swap] + MIN_NR_GENS > max_seq) {
- *nr_to_scan = 0;
- return true;
- }
-
- for (type = !can_swap; type < ANON_AND_FILE; type++) {
- unsigned long seq;
-
- for (seq = min_seq[type]; seq <= max_seq; seq++) {
- unsigned long size = 0;
-
- gen = lru_gen_from_seq(seq);
-
- for (zone = 0; zone < MAX_NR_ZONES; zone++)
- size += max(READ_ONCE(lrugen->nr_pages[gen][type][zone]), 0L);
-
- total += size;
- if (seq == max_seq)
- young += size;
- else if (seq + MIN_NR_GENS == max_seq)
- old += size;
- }
- }
-
- /* try to scrape all its memory if this memcg was deleted */
- *nr_to_scan = mem_cgroup_online(memcg) ? (total >> sc->priority) : total;
-
- /*
- * The aging tries to be lazy to reduce the overhead, while the eviction
- * stalls when the number of generations reaches MIN_NR_GENS. Hence, the
- * ideal number of generations is MIN_NR_GENS+1.
- */
- if (min_seq[!can_swap] + MIN_NR_GENS < max_seq)
- return false;
-
- /*
- * It's also ideal to spread pages out evenly, i.e., 1/(MIN_NR_GENS+1)
- * of the total number of pages for each generation. A reasonable range
- * for this average portion is [1/MIN_NR_GENS, 1/(MIN_NR_GENS+2)]. The
- * aging cares about the upper bound of hot pages, while the eviction
- * cares about the lower bound of cold pages.
- */
- if (young * MIN_NR_GENS > total)
- return true;
- if (old * (MIN_NR_GENS + 2) < total)
- return true;
-
- return false;
-}
-
static bool lruvec_is_sizable(struct lruvec *lruvec, struct scan_control *sc)
{
int gen, type, zone;
@@ -5110,6 +5048,68 @@ retry:
return scanned;
}
+static bool should_run_aging(struct lruvec *lruvec, unsigned long max_seq,
+ struct scan_control *sc, bool can_swap, unsigned long *nr_to_scan)
+{
+ int gen, type, zone;
+ unsigned long old = 0;
+ unsigned long young = 0;
+ unsigned long total = 0;
+ struct lru_gen_folio *lrugen = &lruvec->lrugen;
+ struct mem_cgroup *memcg = lruvec_memcg(lruvec);
+ DEFINE_MIN_SEQ(lruvec);
+
+ /* whether this lruvec is completely out of cold folios */
+ if (min_seq[!can_swap] + MIN_NR_GENS > max_seq) {
+ *nr_to_scan = 0;
+ return true;
+ }
+
+ for (type = !can_swap; type < ANON_AND_FILE; type++) {
+ unsigned long seq;
+
+ for (seq = min_seq[type]; seq <= max_seq; seq++) {
+ unsigned long size = 0;
+
+ gen = lru_gen_from_seq(seq);
+
+ for (zone = 0; zone < MAX_NR_ZONES; zone++)
+ size += max(READ_ONCE(lrugen->nr_pages[gen][type][zone]), 0L);
+
+ total += size;
+ if (seq == max_seq)
+ young += size;
+ else if (seq + MIN_NR_GENS == max_seq)
+ old += size;
+ }
+ }
+
+ /* try to scrape all its memory if this memcg was deleted */
+ *nr_to_scan = mem_cgroup_online(memcg) ? (total >> sc->priority) : total;
+
+ /*
+ * The aging tries to be lazy to reduce the overhead, while the eviction
+ * stalls when the number of generations reaches MIN_NR_GENS. Hence, the
+ * ideal number of generations is MIN_NR_GENS+1.
+ */
+ if (min_seq[!can_swap] + MIN_NR_GENS < max_seq)
+ return false;
+
+ /*
+ * It's also ideal to spread pages out evenly, i.e., 1/(MIN_NR_GENS+1)
+ * of the total number of pages for each generation. A reasonable range
+ * for this average portion is [1/MIN_NR_GENS, 1/(MIN_NR_GENS+2)]. The
+ * aging cares about the upper bound of hot pages, while the eviction
+ * cares about the lower bound of cold pages.
+ */
+ if (young * MIN_NR_GENS > total)
+ return true;
+ if (old * (MIN_NR_GENS + 2) < total)
+ return true;
+
+ return false;
+}
+
/*
* For future optimizations:
* 1. Defer try_to_inc_max_seq() to workqueues to reduce latency for memcg

876
target/linux/generic/backport-6.1/020-v6.3-06-BACKPORT-mm-multi-gen-LRU-per-node-lru_gen_folio-lis.patch
View File

@@ -1,876 +0,0 @@
From 8ee8571e47aa75221e5fbd4c9c7802fc4244c346 Mon Sep 17 00:00:00 2001
From: Yu Zhao <yuzhao@google.com>
Date: Wed, 21 Dec 2022 21:19:04 -0700
Subject: [PATCH 06/19] BACKPORT: mm: multi-gen LRU: per-node lru_gen_folio
lists
For each node, memcgs are divided into two generations: the old and
the young. For each generation, memcgs are randomly sharded into
multiple bins to improve scalability. For each bin, an RCU hlist_nulls
is virtually divided into three segments: the head, the tail and the
default.
An onlining memcg is added to the tail of a random bin in the old
generation. The eviction starts at the head of a random bin in the old
generation. The per-node memcg generation counter, whose reminder (mod
2) indexes the old generation, is incremented when all its bins become
empty.
There are four operations:
1. MEMCG_LRU_HEAD, which moves an memcg to the head of a random bin in
its current generation (old or young) and updates its "seg" to
"head";
2. MEMCG_LRU_TAIL, which moves an memcg to the tail of a random bin in
its current generation (old or young) and updates its "seg" to
"tail";
3. MEMCG_LRU_OLD, which moves an memcg to the head of a random bin in
the old generation, updates its "gen" to "old" and resets its "seg"
to "default";
4. MEMCG_LRU_YOUNG, which moves an memcg to the tail of a random bin
in the young generation, updates its "gen" to "young" and resets
its "seg" to "default".
The events that trigger the above operations are:
1. Exceeding the soft limit, which triggers MEMCG_LRU_HEAD;
2. The first attempt to reclaim an memcg below low, which triggers
MEMCG_LRU_TAIL;
3. The first attempt to reclaim an memcg below reclaimable size
threshold, which triggers MEMCG_LRU_TAIL;
4. The second attempt to reclaim an memcg below reclaimable size
threshold, which triggers MEMCG_LRU_YOUNG;
5. Attempting to reclaim an memcg below min, which triggers
MEMCG_LRU_YOUNG;
6. Finishing the aging on the eviction path, which triggers
MEMCG_LRU_YOUNG;
7. Offlining an memcg, which triggers MEMCG_LRU_OLD.
Note that memcg LRU only applies to global reclaim, and the
round-robin incrementing of their max_seq counters ensures the
eventual fairness to all eligible memcgs. For memcg reclaim, it still
relies on mem_cgroup_iter().
Link: https://lkml.kernel.org/r/20221222041905.2431096-7-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michael Larabel <Michael@MichaelLarabel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Bug: 274865848
(cherry picked from commit e4dde56cd208674ce899b47589f263499e5b8cdc)
[TJ: Resolved conflicts with older function signatures for
min_cgroup_below_min / min_cgroup_below_low and includes]
Change-Id: Idc8a0f635e035d72dd911f807d1224cb47cbd655
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
include/linux/memcontrol.h | 10 +
include/linux/mm_inline.h | 17 ++
include/linux/mmzone.h | 117 +++++++++++-
mm/memcontrol.c | 16 ++
mm/page_alloc.c | 1 +
mm/vmscan.c | 374 +++++++++++++++++++++++++++++++++----
6 files changed, 500 insertions(+), 35 deletions(-)
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -795,6 +795,11 @@ static inline void obj_cgroup_put(struct
percpu_ref_put(&objcg->refcnt);
}
+static inline bool mem_cgroup_tryget(struct mem_cgroup *memcg)
+{
+ return !memcg || css_tryget(&memcg->css);
+}
+
static inline void mem_cgroup_put(struct mem_cgroup *memcg)
{
if (memcg)
@@ -1295,6 +1300,11 @@ static inline void obj_cgroup_put(struct
{
}
+static inline bool mem_cgroup_tryget(struct mem_cgroup *memcg)
+{
+ return true;
+}
+
static inline void mem_cgroup_put(struct mem_cgroup *memcg)
{
}
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -122,6 +122,18 @@ static inline bool lru_gen_in_fault(void
return current->in_lru_fault;
}
+#ifdef CONFIG_MEMCG
+static inline int lru_gen_memcg_seg(struct lruvec *lruvec)
+{
+ return READ_ONCE(lruvec->lrugen.seg);
+}
+#else
+static inline int lru_gen_memcg_seg(struct lruvec *lruvec)
+{
+ return 0;
+}
+#endif
+
static inline int lru_gen_from_seq(unsigned long seq)
{
return seq % MAX_NR_GENS;
@@ -302,6 +314,11 @@ static inline bool lru_gen_in_fault(void
return false;
}
+static inline int lru_gen_memcg_seg(struct lruvec *lruvec)
+{
+ return 0;
+}
+
static inline bool lru_gen_add_folio(struct lruvec *lruvec, struct folio *folio, bool reclaiming)
{
return false;
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -7,6 +7,7 @@
#include <linux/spinlock.h>
#include <linux/list.h>
+#include <linux/list_nulls.h>
#include <linux/wait.h>
#include <linux/bitops.h>
#include <linux/cache.h>
@@ -367,6 +368,15 @@ struct page_vma_mapped_walk;
#define LRU_GEN_MASK ((BIT(LRU_GEN_WIDTH) - 1) << LRU_GEN_PGOFF)
#define LRU_REFS_MASK ((BIT(LRU_REFS_WIDTH) - 1) << LRU_REFS_PGOFF)
+/* see the comment on MEMCG_NR_GENS */
+enum {
+ MEMCG_LRU_NOP,
+ MEMCG_LRU_HEAD,
+ MEMCG_LRU_TAIL,
+ MEMCG_LRU_OLD,
+ MEMCG_LRU_YOUNG,
+};
+
#ifdef CONFIG_LRU_GEN
enum {
@@ -426,6 +436,14 @@ struct lru_gen_folio {
atomic_long_t refaulted[NR_HIST_GENS][ANON_AND_FILE][MAX_NR_TIERS];
/* whether the multi-gen LRU is enabled */
bool enabled;
+#ifdef CONFIG_MEMCG
+ /* the memcg generation this lru_gen_folio belongs to */
+ u8 gen;
+ /* the list segment this lru_gen_folio belongs to */
+ u8 seg;
+ /* per-node lru_gen_folio list for global reclaim */
+ struct hlist_nulls_node list;
+#endif
};
enum {
@@ -479,12 +497,87 @@ void lru_gen_init_lruvec(struct lruvec *
void lru_gen_look_around(struct page_vma_mapped_walk *pvmw);
#ifdef CONFIG_MEMCG
+
+/*
+ * For each node, memcgs are divided into two generations: the old and the
+ * young. For each generation, memcgs are randomly sharded into multiple bins
+ * to improve scalability. For each bin, the hlist_nulls is virtually divided
+ * into three segments: the head, the tail and the default.
+ *
+ * An onlining memcg is added to the tail of a random bin in the old generation.
+ * The eviction starts at the head of a random bin in the old generation. The
+ * per-node memcg generation counter, whose reminder (mod MEMCG_NR_GENS) indexes
+ * the old generation, is incremented when all its bins become empty.
+ *
+ * There are four operations:
+ * 1. MEMCG_LRU_HEAD, which moves an memcg to the head of a random bin in its
+ * current generation (old or young) and updates its "seg" to "head";
+ * 2. MEMCG_LRU_TAIL, which moves an memcg to the tail of a random bin in its
+ * current generation (old or young) and updates its "seg" to "tail";
+ * 3. MEMCG_LRU_OLD, which moves an memcg to the head of a random bin in the old
+ * generation, updates its "gen" to "old" and resets its "seg" to "default";
+ * 4. MEMCG_LRU_YOUNG, which moves an memcg to the tail of a random bin in the
+ * young generation, updates its "gen" to "young" and resets its "seg" to
+ * "default".
+ *
+ * The events that trigger the above operations are:
+ * 1. Exceeding the soft limit, which triggers MEMCG_LRU_HEAD;
+ * 2. The first attempt to reclaim an memcg below low, which triggers
+ * MEMCG_LRU_TAIL;
+ * 3. The first attempt to reclaim an memcg below reclaimable size threshold,
+ * which triggers MEMCG_LRU_TAIL;
+ * 4. The second attempt to reclaim an memcg below reclaimable size threshold,
+ * which triggers MEMCG_LRU_YOUNG;
+ * 5. Attempting to reclaim an memcg below min, which triggers MEMCG_LRU_YOUNG;
+ * 6. Finishing the aging on the eviction path, which triggers MEMCG_LRU_YOUNG;
+ * 7. Offlining an memcg, which triggers MEMCG_LRU_OLD.
+ *
+ * Note that memcg LRU only applies to global reclaim, and the round-robin
+ * incrementing of their max_seq counters ensures the eventual fairness to all
+ * eligible memcgs. For memcg reclaim, it still relies on mem_cgroup_iter().
+ */
+#define MEMCG_NR_GENS 2
+#define MEMCG_NR_BINS 8
+
+struct lru_gen_memcg {
+ /* the per-node memcg generation counter */
+ unsigned long seq;
+ /* each memcg has one lru_gen_folio per node */
+ unsigned long nr_memcgs[MEMCG_NR_GENS];
+ /* per-node lru_gen_folio list for global reclaim */
+ struct hlist_nulls_head fifo[MEMCG_NR_GENS][MEMCG_NR_BINS];
+ /* protects the above */
+ spinlock_t lock;
+};
+
+void lru_gen_init_pgdat(struct pglist_data *pgdat);
+
void lru_gen_init_memcg(struct mem_cgroup *memcg);
void lru_gen_exit_memcg(struct mem_cgroup *memcg);
-#endif
+void lru_gen_online_memcg(struct mem_cgroup *memcg);
+void lru_gen_offline_memcg(struct mem_cgroup *memcg);
+void lru_gen_release_memcg(struct mem_cgroup *memcg);
+void lru_gen_rotate_memcg(struct lruvec *lruvec, int op);
+
+#else /* !CONFIG_MEMCG */
+
+#define MEMCG_NR_GENS 1
+
+struct lru_gen_memcg {
+};
+
+static inline void lru_gen_init_pgdat(struct pglist_data *pgdat)
+{
+}
+
+#endif /* CONFIG_MEMCG */
#else /* !CONFIG_LRU_GEN */
+static inline void lru_gen_init_pgdat(struct pglist_data *pgdat)
+{
+}
+
static inline void lru_gen_init_lruvec(struct lruvec *lruvec)
{
}
@@ -494,6 +587,7 @@ static inline void lru_gen_look_around(s
}
#ifdef CONFIG_MEMCG
+
static inline void lru_gen_init_memcg(struct mem_cgroup *memcg)
{
}
@@ -501,7 +595,24 @@ static inline void lru_gen_init_memcg(st
static inline void lru_gen_exit_memcg(struct mem_cgroup *memcg)
{
}
-#endif
+
+static inline void lru_gen_online_memcg(struct mem_cgroup *memcg)
+{
+}
+
+static inline void lru_gen_offline_memcg(struct mem_cgroup *memcg)
+{
+}
+
+static inline void lru_gen_release_memcg(struct mem_cgroup *memcg)
+{
+}
+
+static inline void lru_gen_rotate_memcg(struct lruvec *lruvec, int op)
+{
+}
+
+#endif /* CONFIG_MEMCG */
#endif /* CONFIG_LRU_GEN */
@@ -1218,6 +1329,8 @@ typedef struct pglist_data {
#ifdef CONFIG_LRU_GEN
/* kswap mm walk data */
struct lru_gen_mm_walk mm_walk;
+ /* lru_gen_folio list */
+ struct lru_gen_memcg memcg_lru;
#endif
CACHELINE_PADDING(_pad2_);
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -477,6 +477,16 @@ static void mem_cgroup_update_tree(struc
struct mem_cgroup_per_node *mz;
struct mem_cgroup_tree_per_node *mctz;
+ if (lru_gen_enabled()) {
+ struct lruvec *lruvec = &memcg->nodeinfo[nid]->lruvec;
+
+ /* see the comment on MEMCG_NR_GENS */
+ if (soft_limit_excess(memcg) && lru_gen_memcg_seg(lruvec) != MEMCG_LRU_HEAD)
+ lru_gen_rotate_memcg(lruvec, MEMCG_LRU_HEAD);
+
+ return;
+ }
+
mctz = soft_limit_tree.rb_tree_per_node[nid];
if (!mctz)
return;
@@ -3524,6 +3534,9 @@ unsigned long mem_cgroup_soft_limit_recl
struct mem_cgroup_tree_per_node *mctz;
unsigned long excess;
+ if (lru_gen_enabled())
+ return 0;
+
if (order > 0)
return 0;
@@ -5390,6 +5403,7 @@ static int mem_cgroup_css_online(struct
if (unlikely(mem_cgroup_is_root(memcg)))
queue_delayed_work(system_unbound_wq, &stats_flush_dwork,
2UL*HZ);
+ lru_gen_online_memcg(memcg);
return 0;
offline_kmem:
memcg_offline_kmem(memcg);
@@ -5421,6 +5435,7 @@ static void mem_cgroup_css_offline(struc
memcg_offline_kmem(memcg);
reparent_shrinker_deferred(memcg);
wb_memcg_offline(memcg);
+ lru_gen_offline_memcg(memcg);
drain_all_stock(memcg);
@@ -5432,6 +5447,7 @@ static void mem_cgroup_css_released(stru
struct mem_cgroup *memcg = mem_cgroup_from_css(css);
invalidate_reclaim_iterators(memcg);
+ lru_gen_release_memcg(memcg);
}
static void mem_cgroup_css_free(struct cgroup_subsys_state *css)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -7956,6 +7956,7 @@ static void __init free_area_init_node(i
pgdat_set_deferred_range(pgdat);
free_area_init_core(pgdat);
+ lru_gen_init_pgdat(pgdat);
}
static void __init free_area_init_memoryless_node(int nid)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -54,6 +54,8 @@
#include <linux/shmem_fs.h>
#include <linux/ctype.h>
#include <linux/debugfs.h>
+#include <linux/rculist_nulls.h>
+#include <linux/random.h>
#include <asm/tlbflush.h>
#include <asm/div64.h>
@@ -134,11 +136,6 @@ struct scan_control {
/* Always discard instead of demoting to lower tier memory */
unsigned int no_demotion:1;
-#ifdef CONFIG_LRU_GEN
- /* help kswapd make better choices among multiple memcgs */
- unsigned long last_reclaimed;
-#endif
-
/* Allocation order */
s8 order;
@@ -3160,6 +3157,9 @@ DEFINE_STATIC_KEY_ARRAY_FALSE(lru_gen_ca
for ((type) = 0; (type) < ANON_AND_FILE; (type)++) \
for ((zone) = 0; (zone) < MAX_NR_ZONES; (zone)++)
+#define get_memcg_gen(seq) ((seq) % MEMCG_NR_GENS)
+#define get_memcg_bin(bin) ((bin) % MEMCG_NR_BINS)
+
static struct lruvec *get_lruvec(struct mem_cgroup *memcg, int nid)
{
struct pglist_data *pgdat = NODE_DATA(nid);
@@ -4442,8 +4442,7 @@ done:
if (sc->priority <= DEF_PRIORITY - 2)
wait_event_killable(lruvec->mm_state.wait,
max_seq < READ_ONCE(lrugen->max_seq));
-
- return max_seq < READ_ONCE(lrugen->max_seq);
+ return false;
}
VM_WARN_ON_ONCE(max_seq != READ_ONCE(lrugen->max_seq));
@@ -4516,8 +4515,6 @@ static void lru_gen_age_node(struct pgli
VM_WARN_ON_ONCE(!current_is_kswapd());
- sc->last_reclaimed = sc->nr_reclaimed;
-
/* check the order to exclude compaction-induced reclaim */
if (!min_ttl || sc->order || sc->priority == DEF_PRIORITY)
return;
@@ -5115,8 +5112,7 @@ static bool should_run_aging(struct lruv
* 1. Defer try_to_inc_max_seq() to workqueues to reduce latency for memcg
* reclaim.
*/
-static unsigned long get_nr_to_scan(struct lruvec *lruvec, struct scan_control *sc,
- bool can_swap)
+static long get_nr_to_scan(struct lruvec *lruvec, struct scan_control *sc, bool can_swap)
{
unsigned long nr_to_scan;
struct mem_cgroup *memcg = lruvec_memcg(lruvec);
@@ -5133,10 +5129,8 @@ static unsigned long get_nr_to_scan(stru
if (sc->priority == DEF_PRIORITY)
return nr_to_scan;
- try_to_inc_max_seq(lruvec, max_seq, sc, can_swap, false);
-
/* skip this lruvec as it's low on cold folios */
- return 0;
+ return try_to_inc_max_seq(lruvec, max_seq, sc, can_swap, false) ? -1 : 0;
}
static unsigned long get_nr_to_reclaim(struct scan_control *sc)
@@ -5145,29 +5139,18 @@ static unsigned long get_nr_to_reclaim(s
if (!global_reclaim(sc))
return -1;
- /* discount the previous progress for kswapd */
- if (current_is_kswapd())
- return sc->nr_to_reclaim + sc->last_reclaimed;
-
return max(sc->nr_to_reclaim, compact_gap(sc->order));
}
-static void lru_gen_shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc)
+static bool try_to_shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc)
{
- struct blk_plug plug;
+ long nr_to_scan;
unsigned long scanned = 0;
unsigned long nr_to_reclaim = get_nr_to_reclaim(sc);
- lru_add_drain();
-
- blk_start_plug(&plug);
-
- set_mm_walk(lruvec_pgdat(lruvec));
-
while (true) {
int delta;
int swappiness;
- unsigned long nr_to_scan;
if (sc->may_swap)
swappiness = get_swappiness(lruvec, sc);
@@ -5177,7 +5160,7 @@ static void lru_gen_shrink_lruvec(struct
swappiness = 0;
nr_to_scan = get_nr_to_scan(lruvec, sc, swappiness);
- if (!nr_to_scan)
+ if (nr_to_scan <= 0)
break;
delta = evict_folios(lruvec, sc, swappiness);
@@ -5194,10 +5177,251 @@ static void lru_gen_shrink_lruvec(struct
cond_resched();
}
+ /* whether try_to_inc_max_seq() was successful */
+ return nr_to_scan < 0;
+}
+
+static int shrink_one(struct lruvec *lruvec, struct scan_control *sc)
+{
+ bool success;
+ unsigned long scanned = sc->nr_scanned;
+ unsigned long reclaimed = sc->nr_reclaimed;
+ int seg = lru_gen_memcg_seg(lruvec);
+ struct mem_cgroup *memcg = lruvec_memcg(lruvec);
+ struct pglist_data *pgdat = lruvec_pgdat(lruvec);
+
+ /* see the comment on MEMCG_NR_GENS */
+ if (!lruvec_is_sizable(lruvec, sc))
+ return seg != MEMCG_LRU_TAIL ? MEMCG_LRU_TAIL : MEMCG_LRU_YOUNG;
+
+ mem_cgroup_calculate_protection(NULL, memcg);
+
+ if (mem_cgroup_below_min(memcg))
+ return MEMCG_LRU_YOUNG;
+
+ if (mem_cgroup_below_low(memcg)) {
+ /* see the comment on MEMCG_NR_GENS */
+ if (seg != MEMCG_LRU_TAIL)
+ return MEMCG_LRU_TAIL;
+
+ memcg_memory_event(memcg, MEMCG_LOW);
+ }
+
+ success = try_to_shrink_lruvec(lruvec, sc);
+
+ shrink_slab(sc->gfp_mask, pgdat->node_id, memcg, sc->priority);
+
+ if (!sc->proactive)
+ vmpressure(sc->gfp_mask, memcg, false, sc->nr_scanned - scanned,
+ sc->nr_reclaimed - reclaimed);
+
+ sc->nr_reclaimed += current->reclaim_state->reclaimed_slab;
+ current->reclaim_state->reclaimed_slab = 0;
+
+ return success ? MEMCG_LRU_YOUNG : 0;
+}
+
+#ifdef CONFIG_MEMCG
+
+static void shrink_many(struct pglist_data *pgdat, struct scan_control *sc)
+{
+ int gen;
+ int bin;
+ int first_bin;
+ struct lruvec *lruvec;
+ struct lru_gen_folio *lrugen;
+ const struct hlist_nulls_node *pos;
+ int op = 0;
+ struct mem_cgroup *memcg = NULL;
+ unsigned long nr_to_reclaim = get_nr_to_reclaim(sc);
+
+ bin = first_bin = get_random_u32_below(MEMCG_NR_BINS);
+restart:
+ gen = get_memcg_gen(READ_ONCE(pgdat->memcg_lru.seq));
+
+ rcu_read_lock();
+
+ hlist_nulls_for_each_entry_rcu(lrugen, pos, &pgdat->memcg_lru.fifo[gen][bin], list) {
+ if (op)
+ lru_gen_rotate_memcg(lruvec, op);
+
+ mem_cgroup_put(memcg);
+
+ lruvec = container_of(lrugen, struct lruvec, lrugen);
+ memcg = lruvec_memcg(lruvec);
+
+ if (!mem_cgroup_tryget(memcg)) {
+ op = 0;
+ memcg = NULL;
+ continue;
+ }
+
+ rcu_read_unlock();
+
+ op = shrink_one(lruvec, sc);
+
+ if (sc->nr_reclaimed >= nr_to_reclaim)
+ goto success;
+
+ rcu_read_lock();
+ }
+
+ rcu_read_unlock();
+
+ /* restart if raced with lru_gen_rotate_memcg() */
+ if (gen != get_nulls_value(pos))
+ goto restart;
+
+ /* try the rest of the bins of the current generation */
+ bin = get_memcg_bin(bin + 1);
+ if (bin != first_bin)
+ goto restart;
+success:
+ if (op)
+ lru_gen_rotate_memcg(lruvec, op);
+
+ mem_cgroup_put(memcg);
+}
+
+static void lru_gen_shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc)
+{
+ struct blk_plug plug;
+
+ VM_WARN_ON_ONCE(global_reclaim(sc));
+
+ lru_add_drain();
+
+ blk_start_plug(&plug);
+
+ set_mm_walk(lruvec_pgdat(lruvec));
+
+ if (try_to_shrink_lruvec(lruvec, sc))
+ lru_gen_rotate_memcg(lruvec, MEMCG_LRU_YOUNG);
+
+ clear_mm_walk();
+
+ blk_finish_plug(&plug);
+}
+
+#else /* !CONFIG_MEMCG */
+
+static void shrink_many(struct pglist_data *pgdat, struct scan_control *sc)
+{
+ BUILD_BUG();
+}
+
+static void lru_gen_shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc)
+{
+ BUILD_BUG();
+}
+
+#endif
+
+static void set_initial_priority(struct pglist_data *pgdat, struct scan_control *sc)
+{
+ int priority;
+ unsigned long reclaimable;
+ struct lruvec *lruvec = mem_cgroup_lruvec(NULL, pgdat);
+
+ if (sc->priority != DEF_PRIORITY || sc->nr_to_reclaim < MIN_LRU_BATCH)
+ return;
+ /*
+ * Determine the initial priority based on ((total / MEMCG_NR_GENS) >>
+ * priority) * reclaimed_to_scanned_ratio = nr_to_reclaim, where the
+ * estimated reclaimed_to_scanned_ratio = inactive / total.
+ */
+ reclaimable = node_page_state(pgdat, NR_INACTIVE_FILE);
+ if (get_swappiness(lruvec, sc))
+ reclaimable += node_page_state(pgdat, NR_INACTIVE_ANON);
+
+ reclaimable /= MEMCG_NR_GENS;
+
+ /* round down reclaimable and round up sc->nr_to_reclaim */
+ priority = fls_long(reclaimable) - 1 - fls_long(sc->nr_to_reclaim - 1);
+
+ sc->priority = clamp(priority, 0, DEF_PRIORITY);
+}
+
+static void lru_gen_shrink_node(struct pglist_data *pgdat, struct scan_control *sc)
+{
+ struct blk_plug plug;
+ unsigned long reclaimed = sc->nr_reclaimed;
+
+ VM_WARN_ON_ONCE(!global_reclaim(sc));
+
+ lru_add_drain();
+
+ blk_start_plug(&plug);
+
+ set_mm_walk(pgdat);
+
+ set_initial_priority(pgdat, sc);
+
+ if (current_is_kswapd())
+ sc->nr_reclaimed = 0;
+
+ if (mem_cgroup_disabled())
+ shrink_one(&pgdat->__lruvec, sc);
+ else
+ shrink_many(pgdat, sc);
+
+ if (current_is_kswapd())
+ sc->nr_reclaimed += reclaimed;
+
clear_mm_walk();
blk_finish_plug(&plug);
+
+ /* kswapd should never fail */
+ pgdat->kswapd_failures = 0;
+}
+
+#ifdef CONFIG_MEMCG
+void lru_gen_rotate_memcg(struct lruvec *lruvec, int op)
+{
+ int seg;
+ int old, new;
+ int bin = get_random_u32_below(MEMCG_NR_BINS);
+ struct pglist_data *pgdat = lruvec_pgdat(lruvec);
+
+ spin_lock(&pgdat->memcg_lru.lock);
+
+ VM_WARN_ON_ONCE(hlist_nulls_unhashed(&lruvec->lrugen.list));
+
+ seg = 0;
+ new = old = lruvec->lrugen.gen;
+
+ /* see the comment on MEMCG_NR_GENS */
+ if (op == MEMCG_LRU_HEAD)
+ seg = MEMCG_LRU_HEAD;
+ else if (op == MEMCG_LRU_TAIL)
+ seg = MEMCG_LRU_TAIL;
+ else if (op == MEMCG_LRU_OLD)
+ new = get_memcg_gen(pgdat->memcg_lru.seq);
+ else if (op == MEMCG_LRU_YOUNG)
+ new = get_memcg_gen(pgdat->memcg_lru.seq + 1);
+ else
+ VM_WARN_ON_ONCE(true);
+
+ hlist_nulls_del_rcu(&lruvec->lrugen.list);
+
+ if (op == MEMCG_LRU_HEAD || op == MEMCG_LRU_OLD)
+ hlist_nulls_add_head_rcu(&lruvec->lrugen.list, &pgdat->memcg_lru.fifo[new][bin]);
+ else
+ hlist_nulls_add_tail_rcu(&lruvec->lrugen.list, &pgdat->memcg_lru.fifo[new][bin]);
+
+ pgdat->memcg_lru.nr_memcgs[old]--;
+ pgdat->memcg_lru.nr_memcgs[new]++;
+
+ lruvec->lrugen.gen = new;
+ WRITE_ONCE(lruvec->lrugen.seg, seg);
+
+ if (!pgdat->memcg_lru.nr_memcgs[old] && old == get_memcg_gen(pgdat->memcg_lru.seq))
+ WRITE_ONCE(pgdat->memcg_lru.seq, pgdat->memcg_lru.seq + 1);
+
+ spin_unlock(&pgdat->memcg_lru.lock);
}
+#endif
/******************************************************************************
* state change
@@ -5655,11 +5879,11 @@ static int run_cmd(char cmd, int memcg_i
if (!mem_cgroup_disabled()) {
rcu_read_lock();
+
memcg = mem_cgroup_from_id(memcg_id);
-#ifdef CONFIG_MEMCG
- if (memcg && !css_tryget(&memcg->css))
+ if (!mem_cgroup_tryget(memcg))
memcg = NULL;
-#endif
+
rcu_read_unlock();
if (!memcg)
@@ -5807,6 +6031,19 @@ void lru_gen_init_lruvec(struct lruvec *
}
#ifdef CONFIG_MEMCG
+
+void lru_gen_init_pgdat(struct pglist_data *pgdat)
+{
+ int i, j;
+
+ spin_lock_init(&pgdat->memcg_lru.lock);
+
+ for (i = 0; i < MEMCG_NR_GENS; i++) {
+ for (j = 0; j < MEMCG_NR_BINS; j++)
+ INIT_HLIST_NULLS_HEAD(&pgdat->memcg_lru.fifo[i][j], i);
+ }
+}
+
void lru_gen_init_memcg(struct mem_cgroup *memcg)
{
INIT_LIST_HEAD(&memcg->mm_list.fifo);
@@ -5830,7 +6067,69 @@ void lru_gen_exit_memcg(struct mem_cgrou
}
}
}
-#endif
+
+void lru_gen_online_memcg(struct mem_cgroup *memcg)
+{
+ int gen;
+ int nid;
+ int bin = get_random_u32_below(MEMCG_NR_BINS);
+
+ for_each_node(nid) {
+ struct pglist_data *pgdat = NODE_DATA(nid);
+ struct lruvec *lruvec = get_lruvec(memcg, nid);
+
+ spin_lock(&pgdat->memcg_lru.lock);
+
+ VM_WARN_ON_ONCE(!hlist_nulls_unhashed(&lruvec->lrugen.list));
+
+ gen = get_memcg_gen(pgdat->memcg_lru.seq);
+
+ hlist_nulls_add_tail_rcu(&lruvec->lrugen.list, &pgdat->memcg_lru.fifo[gen][bin]);
+ pgdat->memcg_lru.nr_memcgs[gen]++;
+
+ lruvec->lrugen.gen = gen;
+
+ spin_unlock(&pgdat->memcg_lru.lock);
+ }
+}
+
+void lru_gen_offline_memcg(struct mem_cgroup *memcg)
+{
+ int nid;
+
+ for_each_node(nid) {
+ struct lruvec *lruvec = get_lruvec(memcg, nid);
+
+ lru_gen_rotate_memcg(lruvec, MEMCG_LRU_OLD);
+ }
+}
+
+void lru_gen_release_memcg(struct mem_cgroup *memcg)
+{
+ int gen;
+ int nid;
+
+ for_each_node(nid) {
+ struct pglist_data *pgdat = NODE_DATA(nid);
+ struct lruvec *lruvec = get_lruvec(memcg, nid);
+
+ spin_lock(&pgdat->memcg_lru.lock);
+
+ VM_WARN_ON_ONCE(hlist_nulls_unhashed(&lruvec->lrugen.list));
+
+ gen = lruvec->lrugen.gen;
+
+ hlist_nulls_del_rcu(&lruvec->lrugen.list);
+ pgdat->memcg_lru.nr_memcgs[gen]--;
+
+ if (!pgdat->memcg_lru.nr_memcgs[gen] && gen == get_memcg_gen(pgdat->memcg_lru.seq))
+ WRITE_ONCE(pgdat->memcg_lru.seq, pgdat->memcg_lru.seq + 1);
+
+ spin_unlock(&pgdat->memcg_lru.lock);
+ }
+}
+
+#endif /* CONFIG_MEMCG */
static int __init init_lru_gen(void)
{
@@ -5857,6 +6156,10 @@ static void lru_gen_shrink_lruvec(struct
{
}
+static void lru_gen_shrink_node(struct pglist_data *pgdat, struct scan_control *sc)
+{
+}
+
#endif /* CONFIG_LRU_GEN */
static void shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc)
@@ -5870,7 +6173,7 @@ static void shrink_lruvec(struct lruvec
bool proportional_reclaim;
struct blk_plug plug;
- if (lru_gen_enabled()) {
+ if (lru_gen_enabled() && !global_reclaim(sc)) {
lru_gen_shrink_lruvec(lruvec, sc);
return;
}
@@ -6113,6 +6416,11 @@ static void shrink_node(pg_data_t *pgdat
struct lruvec *target_lruvec;
bool reclaimable = false;
+ if (lru_gen_enabled() && global_reclaim(sc)) {
+ lru_gen_shrink_node(pgdat, sc);
+ return;
+ }
+
target_lruvec = mem_cgroup_lruvec(sc->target_mem_cgroup, pgdat);
again:

202
target/linux/generic/backport-6.1/020-v6.3-07-BACKPORT-mm-multi-gen-LRU-clarify-scan_control-flags.patch
View File

@@ -1,202 +0,0 @@
From 11b14ee8cbbbebd8204609076a9327a1171cd253 Mon Sep 17 00:00:00 2001
From: Yu Zhao <yuzhao@google.com>
Date: Wed, 21 Dec 2022 21:19:05 -0700
Subject: [PATCH 07/19] BACKPORT: mm: multi-gen LRU: clarify scan_control flags
Among the flags in scan_control:
1. sc->may_swap, which indicates swap constraint due to memsw.max, is
supported as usual.
2. sc->proactive, which indicates reclaim by memory.reclaim, may not
opportunistically skip the aging path, since it is considered less
latency sensitive.
3. !(sc->gfp_mask & __GFP_IO), which indicates IO constraint, lowers
swappiness to prioritize file LRU, since clean file folios are more
likely to exist.
4. sc->may_writepage and sc->may_unmap, which indicates opportunistic
reclaim, are rejected, since unmapped clean folios are already
prioritized. Scanning for more of them is likely futile and can
cause high reclaim latency when there is a large number of memcgs.
The rest are handled by the existing code.
Link: https://lkml.kernel.org/r/20221222041905.2431096-8-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michael Larabel <Michael@MichaelLarabel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Bug: 274865848
(cherry picked from commit e9d4e1ee788097484606c32122f146d802a9c5fb)
[TJ: Resolved conflict with older function signature for min_cgroup_below_min, and over
cdded861182142ac4488a4d64c571107aeb77f53 ("ANDROID: MGLRU: Don't skip anon reclaim if swap low")]
Change-Id: Ic2e779eaf4e91a3921831b4e2fa10c740dc59d50
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
mm/vmscan.c | 55 +++++++++++++++++++++++++++--------------------------
1 file changed, 28 insertions(+), 27 deletions(-)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3185,6 +3185,9 @@ static int get_swappiness(struct lruvec
struct mem_cgroup *memcg = lruvec_memcg(lruvec);
struct pglist_data *pgdat = lruvec_pgdat(lruvec);
+ if (!sc->may_swap)
+ return 0;
+
if (!can_demote(pgdat->node_id, sc) &&
mem_cgroup_get_nr_swap_pages(memcg) < MIN_LRU_BATCH)
return 0;
@@ -4223,7 +4226,7 @@ static void walk_mm(struct lruvec *lruve
} while (err == -EAGAIN);
}
-static struct lru_gen_mm_walk *set_mm_walk(struct pglist_data *pgdat)
+static struct lru_gen_mm_walk *set_mm_walk(struct pglist_data *pgdat, bool force_alloc)
{
struct lru_gen_mm_walk *walk = current->reclaim_state->mm_walk;
@@ -4231,7 +4234,7 @@ static struct lru_gen_mm_walk *set_mm_wa
VM_WARN_ON_ONCE(walk);
walk = &pgdat->mm_walk;
- } else if (!pgdat && !walk) {
+ } else if (!walk && force_alloc) {
VM_WARN_ON_ONCE(current_is_kswapd());
walk = kzalloc(sizeof(*walk), __GFP_HIGH | __GFP_NOMEMALLOC | __GFP_NOWARN);
@@ -4419,7 +4422,7 @@ static bool try_to_inc_max_seq(struct lr
goto done;
}
- walk = set_mm_walk(NULL);
+ walk = set_mm_walk(NULL, true);
if (!walk) {
success = iterate_mm_list_nowalk(lruvec, max_seq);
goto done;
@@ -4488,8 +4491,6 @@ static bool lruvec_is_reclaimable(struct
struct mem_cgroup *memcg = lruvec_memcg(lruvec);
DEFINE_MIN_SEQ(lruvec);
- VM_WARN_ON_ONCE(sc->memcg_low_reclaim);
-
/* see the comment on lru_gen_folio */
gen = lru_gen_from_seq(min_seq[LRU_GEN_FILE]);
birth = READ_ONCE(lruvec->lrugen.timestamps[gen]);
@@ -4753,12 +4754,8 @@ static bool isolate_folio(struct lruvec
{
bool success;
- /* unmapping inhibited */
- if (!sc->may_unmap && folio_mapped(folio))
- return false;
-
/* swapping inhibited */
- if (!(sc->may_writepage && (sc->gfp_mask & __GFP_IO)) &&
+ if (!(sc->gfp_mask & __GFP_IO) &&
(folio_test_dirty(folio) ||
(folio_test_anon(folio) && !folio_test_swapcache(folio))))
return false;
@@ -4857,9 +4854,8 @@ static int scan_folios(struct lruvec *lr
__count_vm_events(PGSCAN_ANON + type, isolated);
/*
- * There might not be eligible pages due to reclaim_idx, may_unmap and
- * may_writepage. Check the remaining to prevent livelock if it's not
- * making progress.
+ * There might not be eligible folios due to reclaim_idx. Check the
+ * remaining to prevent livelock if it's not making progress.
*/
return isolated || !remaining ? scanned : 0;
}
@@ -5118,8 +5114,7 @@ static long get_nr_to_scan(struct lruvec
struct mem_cgroup *memcg = lruvec_memcg(lruvec);
DEFINE_MAX_SEQ(lruvec);
- if (mem_cgroup_below_min(memcg) ||
- (mem_cgroup_below_low(memcg) && !sc->memcg_low_reclaim))
+ if (mem_cgroup_below_min(memcg))
return 0;
if (!should_run_aging(lruvec, max_seq, sc, can_swap, &nr_to_scan))
@@ -5147,17 +5142,14 @@ static bool try_to_shrink_lruvec(struct
long nr_to_scan;
unsigned long scanned = 0;
unsigned long nr_to_reclaim = get_nr_to_reclaim(sc);
+ int swappiness = get_swappiness(lruvec, sc);
+
+ /* clean file folios are more likely to exist */
+ if (swappiness && !(sc->gfp_mask & __GFP_IO))
+ swappiness = 1;
while (true) {
int delta;
- int swappiness;
-
- if (sc->may_swap)
- swappiness = get_swappiness(lruvec, sc);
- else if (!cgroup_reclaim(sc) && get_swappiness(lruvec, sc))
- swappiness = 1;
- else
- swappiness = 0;
nr_to_scan = get_nr_to_scan(lruvec, sc, swappiness);
if (nr_to_scan <= 0)
@@ -5288,12 +5280,13 @@ static void lru_gen_shrink_lruvec(struct
struct blk_plug plug;
VM_WARN_ON_ONCE(global_reclaim(sc));
+ VM_WARN_ON_ONCE(!sc->may_writepage || !sc->may_unmap);
lru_add_drain();
blk_start_plug(&plug);
- set_mm_walk(lruvec_pgdat(lruvec));
+ set_mm_walk(NULL, sc->proactive);
if (try_to_shrink_lruvec(lruvec, sc))
lru_gen_rotate_memcg(lruvec, MEMCG_LRU_YOUNG);
@@ -5349,11 +5342,19 @@ static void lru_gen_shrink_node(struct p
VM_WARN_ON_ONCE(!global_reclaim(sc));
+ /*
+ * Unmapped clean folios are already prioritized. Scanning for more of
+ * them is likely futile and can cause high reclaim latency when there
+ * is a large number of memcgs.
+ */
+ if (!sc->may_writepage || !sc->may_unmap)
+ goto done;
+
lru_add_drain();
blk_start_plug(&plug);
- set_mm_walk(pgdat);
+ set_mm_walk(pgdat, sc->proactive);
set_initial_priority(pgdat, sc);
@@ -5371,7 +5372,7 @@ static void lru_gen_shrink_node(struct p
clear_mm_walk();
blk_finish_plug(&plug);
-
+done:
/* kswapd should never fail */
pgdat->kswapd_failures = 0;
}
@@ -5943,7 +5944,7 @@ static ssize_t lru_gen_seq_write(struct
set_task_reclaim_state(current, &sc.reclaim_state);
flags = memalloc_noreclaim_save();
blk_start_plug(&plug);
- if (!set_mm_walk(NULL)) {
+ if (!set_mm_walk(NULL, true)) {
err = -ENOMEM;
goto done;
}

38
target/linux/generic/backport-6.1/020-v6.3-08-UPSTREAM-mm-multi-gen-LRU-simplify-arch_has_hw_pte_y.patch
View File

@@ -1,38 +0,0 @@
From 25887d48dff860751a06caa4188bfaf6bfb6e4b2 Mon Sep 17 00:00:00 2001
From: Yu Zhao <yuzhao@google.com>
Date: Wed, 21 Dec 2022 21:19:06 -0700
Subject: [PATCH 08/19] UPSTREAM: mm: multi-gen LRU: simplify
arch_has_hw_pte_young() check
Scanning page tables when hardware does not set the accessed bit has
no real use cases.
Link: https://lkml.kernel.org/r/20221222041905.2431096-9-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michael Larabel <Michael@MichaelLarabel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Bug: 274865848
(cherry picked from commit f386e9314025ea99dae639ed2032560a92081430)
Change-Id: I84d97ab665b4e3bb862a9bc7d72f50dea7191a6b
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
mm/vmscan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4417,7 +4417,7 @@ static bool try_to_inc_max_seq(struct lr
* handful of PTEs. Spreading the work out over a period of time usually
* is less efficient, but it avoids bursty page faults.
*/
- if (!force_scan && !(arch_has_hw_pte_young() && get_cap(LRU_GEN_MM_WALK))) {
+ if (!arch_has_hw_pte_young() || !get_cap(LRU_GEN_MM_WALK)) {
success = iterate_mm_list_nowalk(lruvec, max_seq);
goto done;
}

92
target/linux/generic/backport-6.1/020-v6.3-09-UPSTREAM-mm-multi-gen-LRU-avoid-futile-retries.patch
View File

@@ -1,92 +0,0 @@
From 620b0ee94455e48d124414cd06d8a53f69fb6453 Mon Sep 17 00:00:00 2001
From: Yu Zhao <yuzhao@google.com>
Date: Mon, 13 Feb 2023 00:53:22 -0700
Subject: [PATCH 09/19] UPSTREAM: mm: multi-gen LRU: avoid futile retries
Recall that the per-node memcg LRU has two generations and they alternate
when the last memcg (of a given node) is moved from one to the other.
Each generation is also sharded into multiple bins to improve scalability.
A reclaimer starts with a random bin (in the old generation) and, if it
fails, it will retry, i.e., to try the rest of the bins.
If a reclaimer fails with the last memcg, it should move this memcg to the
young generation first, which causes the generations to alternate, and
then retry. Otherwise, the retries will be futile because all other bins
are empty.
Link: https://lkml.kernel.org/r/20230213075322.1416966-1-yuzhao@google.com
Fixes: e4dde56cd208 ("mm: multi-gen LRU: per-node lru_gen_folio lists")
Signed-off-by: Yu Zhao <yuzhao@google.com>
Reported-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Bug: 274865848
(cherry picked from commit 9f550d78b40da21b4da515db4c37d8d7b12aa1a6)
Change-Id: Ie92535676b005ec9e7987632b742fdde8d54436f
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
mm/vmscan.c | 25 +++++++++++++++----------
1 file changed, 15 insertions(+), 10 deletions(-)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -5217,18 +5217,20 @@ static int shrink_one(struct lruvec *lru
static void shrink_many(struct pglist_data *pgdat, struct scan_control *sc)
{
+ int op;
int gen;
int bin;
int first_bin;
struct lruvec *lruvec;
struct lru_gen_folio *lrugen;
+ struct mem_cgroup *memcg;
const struct hlist_nulls_node *pos;
- int op = 0;
- struct mem_cgroup *memcg = NULL;
unsigned long nr_to_reclaim = get_nr_to_reclaim(sc);
bin = first_bin = get_random_u32_below(MEMCG_NR_BINS);
restart:
+ op = 0;
+ memcg = NULL;
gen = get_memcg_gen(READ_ONCE(pgdat->memcg_lru.seq));
rcu_read_lock();
@@ -5252,14 +5254,22 @@ restart:
op = shrink_one(lruvec, sc);
- if (sc->nr_reclaimed >= nr_to_reclaim)
- goto success;
-
rcu_read_lock();
+
+ if (sc->nr_reclaimed >= nr_to_reclaim)
+ break;
}
rcu_read_unlock();
+ if (op)
+ lru_gen_rotate_memcg(lruvec, op);
+
+ mem_cgroup_put(memcg);
+
+ if (sc->nr_reclaimed >= nr_to_reclaim)
+ return;
+
/* restart if raced with lru_gen_rotate_memcg() */
if (gen != get_nulls_value(pos))
goto restart;
@@ -5268,11 +5278,6 @@ restart:
bin = get_memcg_bin(bin + 1);
if (bin != first_bin)
goto restart;
-success:
- if (op)
- lru_gen_rotate_memcg(lruvec, op);
-
- mem_cgroup_put(memcg);
}
static void lru_gen_shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc)

191
target/linux/generic/backport-6.1/020-v6.3-10-UPSTREAM-mm-add-vma_has_recency.patch
View File

@@ -1,191 +0,0 @@
From 70d216c71ff5c5b17dd1da6294f97b91fb6aba7a Mon Sep 17 00:00:00 2001
From: Yu Zhao <yuzhao@google.com>
Date: Fri, 30 Dec 2022 14:52:51 -0700
Subject: [PATCH 10/19] UPSTREAM: mm: add vma_has_recency()
Add vma_has_recency() to indicate whether a VMA may exhibit temporal
locality that the LRU algorithm relies on.
This function returns false for VMAs marked by VM_SEQ_READ or
VM_RAND_READ. While the former flag indicates linear access, i.e., a
special case of spatial locality, both flags indicate a lack of temporal
locality, i.e., the reuse of an area within a relatively small duration.
"Recency" is chosen over "locality" to avoid confusion between temporal
and spatial localities.
Before this patch, the active/inactive LRU only ignored the accessed bit
from VMAs marked by VM_SEQ_READ. After this patch, the active/inactive
LRU and MGLRU share the same logic: they both ignore the accessed bit if
vma_has_recency() returns false.
For the active/inactive LRU, the following fio test showed a [6, 8]%
increase in IOPS when randomly accessing mapped files under memory
pressure.
kb=$(awk '/MemTotal/ { print $2 }' /proc/meminfo)
kb=$((kb - 8*1024*1024))
modprobe brd rd_nr=1 rd_size=$kb
dd if=/dev/zero of=/dev/ram0 bs=1M
mkfs.ext4 /dev/ram0
mount /dev/ram0 /mnt/
swapoff -a
fio --name=test --directory=/mnt/ --ioengine=mmap --numjobs=8 \
--size=8G --rw=randrw --time_based --runtime=10m \
--group_reporting
The discussion that led to this patch is here [1]. Additional test
results are available in that thread.
[1] https://lore.kernel.org/r/Y31s%2FK8T85jh05wH@google.com/
Link: https://lkml.kernel.org/r/20221230215252.2628425-1-yuzhao@google.com
Change-Id: I291dcb795197659e40e46539cd32b857677c34ad
Signed-off-by: Yu Zhao <yuzhao@google.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andrea Righi <andrea.righi@canonical.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michael Larabel <Michael@MichaelLarabel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit 8788f6781486769d9598dcaedc3fe0eb12fc3e59)
Bug: 274865848
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
include/linux/mm_inline.h | 8 ++++++++
mm/memory.c | 7 +++----
mm/rmap.c | 42 +++++++++++++++++----------------------
mm/vmscan.c | 5 ++++-
4 files changed, 33 insertions(+), 29 deletions(-)
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -600,4 +600,12 @@ pte_install_uffd_wp_if_needed(struct vm_
#endif
}
+static inline bool vma_has_recency(struct vm_area_struct *vma)
+{
+ if (vma->vm_flags & (VM_SEQ_READ | VM_RAND_READ))
+ return false;
+
+ return true;
+}
+
#endif
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1445,8 +1445,7 @@ again:
force_flush = 1;
set_page_dirty(page);
}
- if (pte_young(ptent) &&
- likely(!(vma->vm_flags & VM_SEQ_READ)))
+ if (pte_young(ptent) && likely(vma_has_recency(vma)))
mark_page_accessed(page);
}
rss[mm_counter(page)]--;
@@ -5218,8 +5217,8 @@ static inline void mm_account_fault(stru
#ifdef CONFIG_LRU_GEN
static void lru_gen_enter_fault(struct vm_area_struct *vma)
{
- /* the LRU algorithm doesn't apply to sequential or random reads */
- current->in_lru_fault = !(vma->vm_flags & (VM_SEQ_READ | VM_RAND_READ));
+ /* the LRU algorithm only applies to accesses with recency */
+ current->in_lru_fault = vma_has_recency(vma);
}
static void lru_gen_exit_fault(void)
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -823,25 +823,14 @@ static bool folio_referenced_one(struct
}
if (pvmw.pte) {
- if (lru_gen_enabled() && pte_young(*pvmw.pte) &&
- !(vma->vm_flags & (VM_SEQ_READ | VM_RAND_READ))) {
+ if (lru_gen_enabled() && pte_young(*pvmw.pte)) {
lru_gen_look_around(&pvmw);
referenced++;
}
if (ptep_clear_flush_young_notify(vma, address,
- pvmw.pte)) {
- /*
- * Don't treat a reference through
- * a sequentially read mapping as such.
- * If the folio has been used in another mapping,
- * we will catch it; if this other mapping is
- * already gone, the unmap path will have set
- * the referenced flag or activated the folio.
- */
- if (likely(!(vma->vm_flags & VM_SEQ_READ)))
- referenced++;
- }
+ pvmw.pte))
+ referenced++;
} else if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE)) {
if (pmdp_clear_flush_young_notify(vma, address,
pvmw.pmd))
@@ -875,7 +864,20 @@ static bool invalid_folio_referenced_vma
struct folio_referenced_arg *pra = arg;
struct mem_cgroup *memcg = pra->memcg;
- if (!mm_match_cgroup(vma->vm_mm, memcg))
+ /*
+ * Ignore references from this mapping if it has no recency. If the
+ * folio has been used in another mapping, we will catch it; if this
+ * other mapping is already gone, the unmap path will have set the
+ * referenced flag or activated the folio in zap_pte_range().
+ */
+ if (!vma_has_recency(vma))
+ return true;
+
+ /*
+ * If we are reclaiming on behalf of a cgroup, skip counting on behalf
+ * of references from different cgroups.
+ */
+ if (memcg && !mm_match_cgroup(vma->vm_mm, memcg))
return true;
return false;
@@ -906,6 +908,7 @@ int folio_referenced(struct folio *folio
.arg = (void *)&pra,
.anon_lock = folio_lock_anon_vma_read,
.try_lock = true,
+ .invalid_vma = invalid_folio_referenced_vma,
};
*vm_flags = 0;
@@ -921,15 +924,6 @@ int folio_referenced(struct folio *folio
return 1;
}
- /*
- * If we are reclaiming on behalf of a cgroup, skip
- * counting on behalf of references from different
- * cgroups
- */
- if (memcg) {
- rwc.invalid_vma = invalid_folio_referenced_vma;
- }
-
rmap_walk(folio, &rwc);
*vm_flags = pra.vm_flags;
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3778,7 +3778,10 @@ static int should_skip_vma(unsigned long
if (is_vm_hugetlb_page(vma))
return true;
- if (vma->vm_flags & (VM_LOCKED | VM_SPECIAL | VM_SEQ_READ | VM_RAND_READ))
+ if (!vma_has_recency(vma))
+ return true;
+
+ if (vma->vm_flags & (VM_LOCKED | VM_SPECIAL))
return true;
if (vma == get_gate_vma(vma->vm_mm))

129
target/linux/generic/backport-6.1/020-v6.3-11-UPSTREAM-mm-support-POSIX_FADV_NOREUSE.patch
View File

@@ -1,129 +0,0 @@
From 9ca4e437a24dfc4ec6c362f319eb9850b9eca497 Mon Sep 17 00:00:00 2001
From: Yu Zhao <yuzhao@google.com>
Date: Fri, 30 Dec 2022 14:52:52 -0700
Subject: [PATCH 11/19] UPSTREAM: mm: support POSIX_FADV_NOREUSE
This patch adds POSIX_FADV_NOREUSE to vma_has_recency() so that the LRU
algorithm can ignore access to mapped files marked by this flag.
The advantages of POSIX_FADV_NOREUSE are:
1. Unlike MADV_SEQUENTIAL and MADV_RANDOM, it does not alter the
default readahead behavior.
2. Unlike MADV_SEQUENTIAL and MADV_RANDOM, it does not split VMAs and
therefore does not take mmap_lock.
3. Unlike MADV_COLD, setting it has a negligible cost, regardless of
how many pages it affects.
Its limitations are:
1. Like POSIX_FADV_RANDOM and POSIX_FADV_SEQUENTIAL, it currently does
not support range. IOW, its scope is the entire file.
2. It currently does not ignore access through file descriptors.
Specifically, for the active/inactive LRU, given a file page shared
by two users and one of them having set POSIX_FADV_NOREUSE on the
file, this page will be activated upon the second user accessing
it. This corner case can be covered by checking POSIX_FADV_NOREUSE
before calling folio_mark_accessed() on the read path. But it is
considered not worth the effort.
There have been a few attempts to support POSIX_FADV_NOREUSE, e.g., [1].
This time the goal is to fill a niche: a few desktop applications, e.g.,
large file transferring and video encoding/decoding, want fast file
streaming with mmap() rather than direct IO. Among those applications, an
SVT-AV1 regression was reported when running with MGLRU [2]. The
following test can reproduce that regression.
kb=$(awk '/MemTotal/ { print $2 }' /proc/meminfo)
kb=$((kb - 8*1024*1024))
modprobe brd rd_nr=1 rd_size=$kb
dd if=/dev/zero of=/dev/ram0 bs=1M
mkfs.ext4 /dev/ram0
mount /dev/ram0 /mnt/
swapoff -a
fallocate -l 8G /mnt/swapfile
mkswap /mnt/swapfile
swapon /mnt/swapfile
wget http://ultravideo.cs.tut.fi/video/Bosphorus_3840x2160_120fps_420_8bit_YUV_Y4M.7z
7z e -o/mnt/ Bosphorus_3840x2160_120fps_420_8bit_YUV_Y4M.7z
SvtAv1EncApp --preset 12 -w 3840 -h 2160 \
-i /mnt/Bosphorus_3840x2160.y4m
For MGLRU, the following change showed a [9-11]% increase in FPS,
which makes it on par with the active/inactive LRU.
patch Source/App/EncApp/EbAppMain.c <<EOF
31a32
> #include <fcntl.h>
35d35
< #include <fcntl.h> /* _O_BINARY */
117a118
> posix_fadvise(config->mmap.fd, 0, 0, POSIX_FADV_NOREUSE);
EOF
[1] https://lore.kernel.org/r/1308923350-7932-1-git-send-email-andrea@betterlinux.com/
[2] https://openbenchmarking.org/result/2209259-PTS-MGLRU8GB57
Link: https://lkml.kernel.org/r/20221230215252.2628425-2-yuzhao@google.com
Change-Id: I0b7f5f971d78014ea1ba44cee6a8ec902a4330d0
Signed-off-by: Yu Zhao <yuzhao@google.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andrea Righi <andrea.righi@canonical.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michael Larabel <Michael@MichaelLarabel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit 17e810229cb3068b692fa078bd9b3a6527e0866a)
Bug: 274865848
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
include/linux/fs.h | 2 ++
include/linux/mm_inline.h | 3 +++
mm/fadvise.c | 5 ++++-
3 files changed, 9 insertions(+), 1 deletion(-)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -166,6 +166,8 @@ typedef int (dio_iodone_t)(struct kiocb
/* File supports DIRECT IO */
#define FMODE_CAN_ODIRECT ((__force fmode_t)0x400000)
+#define FMODE_NOREUSE ((__force fmode_t)0x800000)
+
/* File was opened by fanotify and shouldn't generate fanotify events */
#define FMODE_NONOTIFY ((__force fmode_t)0x4000000)
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -605,6 +605,9 @@ static inline bool vma_has_recency(struc
if (vma->vm_flags & (VM_SEQ_READ | VM_RAND_READ))
return false;
+ if (vma->vm_file && (vma->vm_file->f_mode & FMODE_NOREUSE))
+ return false;
+
return true;
}
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -80,7 +80,7 @@ int generic_fadvise(struct file *file, l
case POSIX_FADV_NORMAL:
file->f_ra.ra_pages = bdi->ra_pages;
spin_lock(&file->f_lock);
- file->f_mode &= ~FMODE_RANDOM;
+ file->f_mode &= ~(FMODE_RANDOM | FMODE_NOREUSE);
spin_unlock(&file->f_lock);
break;
case POSIX_FADV_RANDOM:
@@ -107,6 +107,9 @@ int generic_fadvise(struct file *file, l
force_page_cache_readahead(mapping, file, start_index, nrpages);
break;
case POSIX_FADV_NOREUSE:
+ spin_lock(&file->f_lock);
+ file->f_mode |= FMODE_NOREUSE;
+ spin_unlock(&file->f_lock);
break;
case POSIX_FADV_DONTNEED:
__filemap_fdatawrite_range(mapping, offset, endbyte,

67
target/linux/generic/backport-6.1/020-v6.3-12-UPSTREAM-mm-multi-gen-LRU-section-for-working-set-pr.patch
View File

@@ -1,67 +0,0 @@
From 1b5e4c317d80f4826eceb3781702d18d06b14394 Mon Sep 17 00:00:00 2001
From: "T.J. Alumbaugh" <talumbau@google.com>
Date: Wed, 18 Jan 2023 00:18:21 +0000
Subject: [PATCH 12/19] UPSTREAM: mm: multi-gen LRU: section for working set
protection
Patch series "mm: multi-gen LRU: improve".
This patch series improves a few MGLRU functions, collects related
functions, and adds additional documentation.
This patch (of 7):
Add a section for working set protection in the code and the design doc.
The admin doc already contains its usage.
Link: https://lkml.kernel.org/r/20230118001827.1040870-1-talumbau@google.com
Link: https://lkml.kernel.org/r/20230118001827.1040870-2-talumbau@google.com
Change-Id: I65599075fd42951db7739a2ab7cee78516e157b3
Signed-off-by: T.J. Alumbaugh <talumbau@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit 7b8144e63d84716f16a1b929e0c7e03ae5c4d5c1)
Bug: 274865848
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
Documentation/mm/multigen_lru.rst | 15 +++++++++++++++
mm/vmscan.c | 4 ++++
2 files changed, 19 insertions(+)
--- a/Documentation/mm/multigen_lru.rst
+++ b/Documentation/mm/multigen_lru.rst
@@ -141,6 +141,21 @@ loop has detected outlying refaults from
this end, the feedback loop uses the first tier as the baseline, for
the reason stated earlier.
+Working set protection
+----------------------
+Each generation is timestamped at birth. If ``lru_gen_min_ttl`` is
+set, an ``lruvec`` is protected from the eviction when its oldest
+generation was born within ``lru_gen_min_ttl`` milliseconds. In other
+words, it prevents the working set of ``lru_gen_min_ttl`` milliseconds
+from getting evicted. The OOM killer is triggered if this working set
+cannot be kept in memory.
+
+This time-based approach has the following advantages:
+
+1. It is easier to configure because it is agnostic to applications
+ and memory sizes.
+2. It is more reliable because it is directly wired to the OOM killer.
+
Summary
-------
The multi-gen LRU can be disassembled into the following parts:
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4461,6 +4461,10 @@ done:
return true;
}
+/******************************************************************************
+ * working set protection
+ ******************************************************************************/
+
static bool lruvec_is_sizable(struct lruvec *lruvec, struct scan_control *sc)
{
int gen, type, zone;

57
target/linux/generic/backport-6.1/020-v6.3-13-UPSTREAM-mm-multi-gen-LRU-section-for-rmap-PT-walk-f.patch
View File

@@ -1,57 +0,0 @@
From 5ddf9d53d375e42af49b744bd7c2f8247c6bce15 Mon Sep 17 00:00:00 2001
From: "T.J. Alumbaugh" <talumbau@google.com>
Date: Wed, 18 Jan 2023 00:18:22 +0000
Subject: [PATCH 13/19] UPSTREAM: mm: multi-gen LRU: section for rmap/PT walk
feedback
Add a section for lru_gen_look_around() in the code and the design doc.
Link: https://lkml.kernel.org/r/20230118001827.1040870-3-talumbau@google.com
Change-Id: I5097af63f61b3b69ec2abee6cdbdc33c296df213
Signed-off-by: T.J. Alumbaugh <talumbau@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit db19a43d9b3a8876552f00f656008206ef9a5efa)
Bug: 274865848
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
Documentation/mm/multigen_lru.rst | 14 ++++++++++++++
mm/vmscan.c | 4 ++++
2 files changed, 18 insertions(+)
--- a/Documentation/mm/multigen_lru.rst
+++ b/Documentation/mm/multigen_lru.rst
@@ -156,6 +156,20 @@ This time-based approach has the followi
and memory sizes.
2. It is more reliable because it is directly wired to the OOM killer.
+Rmap/PT walk feedback
+---------------------
+Searching the rmap for PTEs mapping each page on an LRU list (to test
+and clear the accessed bit) can be expensive because pages from
+different VMAs (PA space) are not cache friendly to the rmap (VA
+space). For workloads mostly using mapped pages, searching the rmap
+can incur the highest CPU cost in the reclaim path.
+
+``lru_gen_look_around()`` exploits spatial locality to reduce the
+trips into the rmap. It scans the adjacent PTEs of a young PTE and
+promotes hot pages. If the scan was done cacheline efficiently, it
+adds the PMD entry pointing to the PTE table to the Bloom filter. This
+forms a feedback loop between the eviction and the aging.
+
Summary
-------
The multi-gen LRU can be disassembled into the following parts:
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4555,6 +4555,10 @@ static void lru_gen_age_node(struct pgli
}
}
+/******************************************************************************
+ * rmap/PT walk feedback
+ ******************************************************************************/
+
/*
* This function exploits spatial locality when shrink_folio_list() walks the
* rmap. It scans the adjacent PTEs of a young PTE and promotes hot pages. If

243
target/linux/generic/backport-6.1/020-v6.3-14-UPSTREAM-mm-multi-gen-LRU-section-for-Bloom-filters.patch
View File

@@ -1,243 +0,0 @@
From 397624e12244ec038f51cb1f178ccb7a2ec562e5 Mon Sep 17 00:00:00 2001
From: "T.J. Alumbaugh" <talumbau@google.com>
Date: Wed, 18 Jan 2023 00:18:23 +0000
Subject: [PATCH 14/19] UPSTREAM: mm: multi-gen LRU: section for Bloom filters
Move Bloom filters code into a dedicated section. Improve the design doc
to explain Bloom filter usage and connection between aging and eviction in
their use.
Link: https://lkml.kernel.org/r/20230118001827.1040870-4-talumbau@google.com
Change-Id: I73e866f687c1ed9f5c8538086aa39408b79897db
Signed-off-by: T.J. Alumbaugh <talumbau@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit ccbbbb85945d8f0255aa9dbc1b617017e2294f2c)
Bug: 274865848
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
Documentation/mm/multigen_lru.rst | 16 +++
mm/vmscan.c | 180 +++++++++++++++---------------
2 files changed, 108 insertions(+), 88 deletions(-)
--- a/Documentation/mm/multigen_lru.rst
+++ b/Documentation/mm/multigen_lru.rst
@@ -170,6 +170,22 @@ promotes hot pages. If the scan was done
adds the PMD entry pointing to the PTE table to the Bloom filter. This
forms a feedback loop between the eviction and the aging.
+Bloom Filters
+-------------
+Bloom filters are a space and memory efficient data structure for set
+membership test, i.e., test if an element is not in the set or may be
+in the set.
+
+In the eviction path, specifically, in ``lru_gen_look_around()``, if a
+PMD has a sufficient number of hot pages, its address is placed in the
+filter. In the aging path, set membership means that the PTE range
+will be scanned for young pages.
+
+Note that Bloom filters are probabilistic on set membership. If a test
+is false positive, the cost is an additional scan of a range of PTEs,
+which may yield hot pages anyway. Parameters of the filter itself can
+control the false positive rate in the limit.
+
Summary
-------
The multi-gen LRU can be disassembled into the following parts:
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3209,6 +3209,98 @@ static bool __maybe_unused seq_is_valid(
}
/******************************************************************************
+ * Bloom filters
+ ******************************************************************************/
+
+/*
+ * Bloom filters with m=1<<15, k=2 and the false positive rates of ~1/5 when
+ * n=10,000 and ~1/2 when n=20,000, where, conventionally, m is the number of
+ * bits in a bitmap, k is the number of hash functions and n is the number of
+ * inserted items.
+ *
+ * Page table walkers use one of the two filters to reduce their search space.
+ * To get rid of non-leaf entries that no longer have enough leaf entries, the
+ * aging uses the double-buffering technique to flip to the other filter each
+ * time it produces a new generation. For non-leaf entries that have enough
+ * leaf entries, the aging carries them over to the next generation in
+ * walk_pmd_range(); the eviction also report them when walking the rmap
+ * in lru_gen_look_around().
+ *
+ * For future optimizations:
+ * 1. It's not necessary to keep both filters all the time. The spare one can be
+ * freed after the RCU grace period and reallocated if needed again.
+ * 2. And when reallocating, it's worth scaling its size according to the number
+ * of inserted entries in the other filter, to reduce the memory overhead on
+ * small systems and false positives on large systems.
+ * 3. Jenkins' hash function is an alternative to Knuth's.
+ */
+#define BLOOM_FILTER_SHIFT 15
+
+static inline int filter_gen_from_seq(unsigned long seq)
+{
+ return seq % NR_BLOOM_FILTERS;
+}
+
+static void get_item_key(void *item, int *key)
+{
+ u32 hash = hash_ptr(item, BLOOM_FILTER_SHIFT * 2);
+
+ BUILD_BUG_ON(BLOOM_FILTER_SHIFT * 2 > BITS_PER_TYPE(u32));
+
+ key[0] = hash & (BIT(BLOOM_FILTER_SHIFT) - 1);
+ key[1] = hash >> BLOOM_FILTER_SHIFT;
+}
+
+static bool test_bloom_filter(struct lruvec *lruvec, unsigned long seq, void *item)
+{
+ int key[2];
+ unsigned long *filter;
+ int gen = filter_gen_from_seq(seq);
+
+ filter = READ_ONCE(lruvec->mm_state.filters[gen]);
+ if (!filter)
+ return true;
+
+ get_item_key(item, key);
+
+ return test_bit(key[0], filter) && test_bit(key[1], filter);
+}
+
+static void update_bloom_filter(struct lruvec *lruvec, unsigned long seq, void *item)
+{
+ int key[2];
+ unsigned long *filter;
+ int gen = filter_gen_from_seq(seq);
+
+ filter = READ_ONCE(lruvec->mm_state.filters[gen]);
+ if (!filter)
+ return;
+
+ get_item_key(item, key);
+
+ if (!test_bit(key[0], filter))
+ set_bit(key[0], filter);
+ if (!test_bit(key[1], filter))
+ set_bit(key[1], filter);
+}
+
+static void reset_bloom_filter(struct lruvec *lruvec, unsigned long seq)
+{
+ unsigned long *filter;
+ int gen = filter_gen_from_seq(seq);
+
+ filter = lruvec->mm_state.filters[gen];
+ if (filter) {
+ bitmap_clear(filter, 0, BIT(BLOOM_FILTER_SHIFT));
+ return;
+ }
+
+ filter = bitmap_zalloc(BIT(BLOOM_FILTER_SHIFT),
+ __GFP_HIGH | __GFP_NOMEMALLOC | __GFP_NOWARN);
+ WRITE_ONCE(lruvec->mm_state.filters[gen], filter);
+}
+
+/******************************************************************************
* mm_struct list
******************************************************************************/
@@ -3333,94 +3425,6 @@ void lru_gen_migrate_mm(struct mm_struct
}
#endif
-/*
- * Bloom filters with m=1<<15, k=2 and the false positive rates of ~1/5 when
- * n=10,000 and ~1/2 when n=20,000, where, conventionally, m is the number of
- * bits in a bitmap, k is the number of hash functions and n is the number of
- * inserted items.
- *
- * Page table walkers use one of the two filters to reduce their search space.
- * To get rid of non-leaf entries that no longer have enough leaf entries, the
- * aging uses the double-buffering technique to flip to the other filter each
- * time it produces a new generation. For non-leaf entries that have enough
- * leaf entries, the aging carries them over to the next generation in
- * walk_pmd_range(); the eviction also report them when walking the rmap
- * in lru_gen_look_around().
- *
- * For future optimizations:
- * 1. It's not necessary to keep both filters all the time. The spare one can be
- * freed after the RCU grace period and reallocated if needed again.
- * 2. And when reallocating, it's worth scaling its size according to the number
- * of inserted entries in the other filter, to reduce the memory overhead on
- * small systems and false positives on large systems.
- * 3. Jenkins' hash function is an alternative to Knuth's.
- */
-#define BLOOM_FILTER_SHIFT 15
-
-static inline int filter_gen_from_seq(unsigned long seq)
-{
- return seq % NR_BLOOM_FILTERS;
-}
-
-static void get_item_key(void *item, int *key)
-{
- u32 hash = hash_ptr(item, BLOOM_FILTER_SHIFT * 2);
-
- BUILD_BUG_ON(BLOOM_FILTER_SHIFT * 2 > BITS_PER_TYPE(u32));
-
- key[0] = hash & (BIT(BLOOM_FILTER_SHIFT) - 1);
- key[1] = hash >> BLOOM_FILTER_SHIFT;
-}
-
-static void reset_bloom_filter(struct lruvec *lruvec, unsigned long seq)
-{
- unsigned long *filter;
- int gen = filter_gen_from_seq(seq);
-
- filter = lruvec->mm_state.filters[gen];
- if (filter) {
- bitmap_clear(filter, 0, BIT(BLOOM_FILTER_SHIFT));
- return;
- }
-
- filter = bitmap_zalloc(BIT(BLOOM_FILTER_SHIFT),
- __GFP_HIGH | __GFP_NOMEMALLOC | __GFP_NOWARN);
- WRITE_ONCE(lruvec->mm_state.filters[gen], filter);
-}
-
-static void update_bloom_filter(struct lruvec *lruvec, unsigned long seq, void *item)
-{
- int key[2];
- unsigned long *filter;
- int gen = filter_gen_from_seq(seq);
-
- filter = READ_ONCE(lruvec->mm_state.filters[gen]);
- if (!filter)
- return;
-
- get_item_key(item, key);
-
- if (!test_bit(key[0], filter))
- set_bit(key[0], filter);
- if (!test_bit(key[1], filter))
- set_bit(key[1], filter);
-}
-
-static bool test_bloom_filter(struct lruvec *lruvec, unsigned long seq, void *item)
-{
- int key[2];
- unsigned long *filter;
- int gen = filter_gen_from_seq(seq);
-
- filter = READ_ONCE(lruvec->mm_state.filters[gen]);
- if (!filter)
- return true;
-
- get_item_key(item, key);
-
- return test_bit(key[0], filter) && test_bit(key[1], filter);
-}
-
static void reset_mm_stats(struct lruvec *lruvec, struct lru_gen_mm_walk *walk, bool last)
{
int i;

427
target/linux/generic/backport-6.1/020-v6.3-15-UPSTREAM-mm-multi-gen-LRU-section-for-memcg-LRU.patch
View File

@@ -1,427 +0,0 @@
From 48c916b812652f9453be5bd45a703728926d41ca Mon Sep 17 00:00:00 2001
From: "T.J. Alumbaugh" <talumbau@google.com>
Date: Wed, 18 Jan 2023 00:18:24 +0000
Subject: [PATCH 15/19] UPSTREAM: mm: multi-gen LRU: section for memcg LRU
Move memcg LRU code into a dedicated section. Improve the design doc to
outline its architecture.
Link: https://lkml.kernel.org/r/20230118001827.1040870-5-talumbau@google.com
Change-Id: Id252e420cff7a858acb098cf2b3642da5c40f602
Signed-off-by: T.J. Alumbaugh <talumbau@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit 36c7b4db7c942ae9e1b111f0c6b468c8b2e33842)
Bug: 274865848
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
Documentation/mm/multigen_lru.rst | 33 +++-
include/linux/mm_inline.h | 17 --
include/linux/mmzone.h | 13 +-
mm/memcontrol.c | 8 +-
mm/vmscan.c | 250 +++++++++++++++++-------------
5 files changed, 178 insertions(+), 143 deletions(-)
--- a/Documentation/mm/multigen_lru.rst
+++ b/Documentation/mm/multigen_lru.rst
@@ -186,9 +186,40 @@ is false positive, the cost is an additi
which may yield hot pages anyway. Parameters of the filter itself can
control the false positive rate in the limit.
+Memcg LRU
+---------
+An memcg LRU is a per-node LRU of memcgs. It is also an LRU of LRUs,
+since each node and memcg combination has an LRU of folios (see
+``mem_cgroup_lruvec()``). Its goal is to improve the scalability of
+global reclaim, which is critical to system-wide memory overcommit in
+data centers. Note that memcg LRU only applies to global reclaim.
+
+The basic structure of an memcg LRU can be understood by an analogy to
+the active/inactive LRU (of folios):
+
+1. It has the young and the old (generations), i.e., the counterparts
+ to the active and the inactive;
+2. The increment of ``max_seq`` triggers promotion, i.e., the
+ counterpart to activation;
+3. Other events trigger similar operations, e.g., offlining an memcg
+ triggers demotion, i.e., the counterpart to deactivation.
+
+In terms of global reclaim, it has two distinct features:
+
+1. Sharding, which allows each thread to start at a random memcg (in
+ the old generation) and improves parallelism;
+2. Eventual fairness, which allows direct reclaim to bail out at will
+ and reduces latency without affecting fairness over some time.
+
+In terms of traversing memcgs during global reclaim, it improves the
+best-case complexity from O(n) to O(1) and does not affect the
+worst-case complexity O(n). Therefore, on average, it has a sublinear
+complexity.
+
Summary
-------
-The multi-gen LRU can be disassembled into the following parts:
+The multi-gen LRU (of folios) can be disassembled into the following
+parts:
* Generations
* Rmap walks
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -122,18 +122,6 @@ static inline bool lru_gen_in_fault(void
return current->in_lru_fault;
}
-#ifdef CONFIG_MEMCG
-static inline int lru_gen_memcg_seg(struct lruvec *lruvec)
-{
- return READ_ONCE(lruvec->lrugen.seg);
-}
-#else
-static inline int lru_gen_memcg_seg(struct lruvec *lruvec)
-{
- return 0;
-}
-#endif
-
static inline int lru_gen_from_seq(unsigned long seq)
{
return seq % MAX_NR_GENS;
@@ -314,11 +302,6 @@ static inline bool lru_gen_in_fault(void
return false;
}
-static inline int lru_gen_memcg_seg(struct lruvec *lruvec)
-{
- return 0;
-}
-
static inline bool lru_gen_add_folio(struct lruvec *lruvec, struct folio *folio, bool reclaiming)
{
return false;
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -368,15 +368,6 @@ struct page_vma_mapped_walk;
#define LRU_GEN_MASK ((BIT(LRU_GEN_WIDTH) - 1) << LRU_GEN_PGOFF)
#define LRU_REFS_MASK ((BIT(LRU_REFS_WIDTH) - 1) << LRU_REFS_PGOFF)
-/* see the comment on MEMCG_NR_GENS */
-enum {
- MEMCG_LRU_NOP,
- MEMCG_LRU_HEAD,
- MEMCG_LRU_TAIL,
- MEMCG_LRU_OLD,
- MEMCG_LRU_YOUNG,
-};
-
#ifdef CONFIG_LRU_GEN
enum {
@@ -557,7 +548,7 @@ void lru_gen_exit_memcg(struct mem_cgrou
void lru_gen_online_memcg(struct mem_cgroup *memcg);
void lru_gen_offline_memcg(struct mem_cgroup *memcg);
void lru_gen_release_memcg(struct mem_cgroup *memcg);
-void lru_gen_rotate_memcg(struct lruvec *lruvec, int op);
+void lru_gen_soft_reclaim(struct lruvec *lruvec);
#else /* !CONFIG_MEMCG */
@@ -608,7 +599,7 @@ static inline void lru_gen_release_memcg
{
}
-static inline void lru_gen_rotate_memcg(struct lruvec *lruvec, int op)
+static inline void lru_gen_soft_reclaim(struct lruvec *lruvec)
{
}
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -478,12 +478,8 @@ static void mem_cgroup_update_tree(struc
struct mem_cgroup_tree_per_node *mctz;
if (lru_gen_enabled()) {
- struct lruvec *lruvec = &memcg->nodeinfo[nid]->lruvec;
-
- /* see the comment on MEMCG_NR_GENS */
- if (soft_limit_excess(memcg) && lru_gen_memcg_seg(lruvec) != MEMCG_LRU_HEAD)
- lru_gen_rotate_memcg(lruvec, MEMCG_LRU_HEAD);
-
+ if (soft_limit_excess(memcg))
+ lru_gen_soft_reclaim(&memcg->nodeinfo[nid]->lruvec);
return;
}
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4692,6 +4692,148 @@ void lru_gen_look_around(struct page_vma
}
/******************************************************************************
+ * memcg LRU
+ ******************************************************************************/
+
+/* see the comment on MEMCG_NR_GENS */
+enum {
+ MEMCG_LRU_NOP,
+ MEMCG_LRU_HEAD,
+ MEMCG_LRU_TAIL,
+ MEMCG_LRU_OLD,
+ MEMCG_LRU_YOUNG,
+};
+
+#ifdef CONFIG_MEMCG
+
+static int lru_gen_memcg_seg(struct lruvec *lruvec)
+{
+ return READ_ONCE(lruvec->lrugen.seg);
+}
+
+static void lru_gen_rotate_memcg(struct lruvec *lruvec, int op)
+{
+ int seg;
+ int old, new;
+ int bin = get_random_u32_below(MEMCG_NR_BINS);
+ struct pglist_data *pgdat = lruvec_pgdat(lruvec);
+
+ spin_lock(&pgdat->memcg_lru.lock);
+
+ VM_WARN_ON_ONCE(hlist_nulls_unhashed(&lruvec->lrugen.list));
+
+ seg = 0;
+ new = old = lruvec->lrugen.gen;
+
+ /* see the comment on MEMCG_NR_GENS */
+ if (op == MEMCG_LRU_HEAD)
+ seg = MEMCG_LRU_HEAD;
+ else if (op == MEMCG_LRU_TAIL)
+ seg = MEMCG_LRU_TAIL;
+ else if (op == MEMCG_LRU_OLD)
+ new = get_memcg_gen(pgdat->memcg_lru.seq);
+ else if (op == MEMCG_LRU_YOUNG)
+ new = get_memcg_gen(pgdat->memcg_lru.seq + 1);
+ else
+ VM_WARN_ON_ONCE(true);
+
+ hlist_nulls_del_rcu(&lruvec->lrugen.list);
+
+ if (op == MEMCG_LRU_HEAD || op == MEMCG_LRU_OLD)
+ hlist_nulls_add_head_rcu(&lruvec->lrugen.list, &pgdat->memcg_lru.fifo[new][bin]);
+ else
+ hlist_nulls_add_tail_rcu(&lruvec->lrugen.list, &pgdat->memcg_lru.fifo[new][bin]);
+
+ pgdat->memcg_lru.nr_memcgs[old]--;
+ pgdat->memcg_lru.nr_memcgs[new]++;
+
+ lruvec->lrugen.gen = new;
+ WRITE_ONCE(lruvec->lrugen.seg, seg);
+
+ if (!pgdat->memcg_lru.nr_memcgs[old] && old == get_memcg_gen(pgdat->memcg_lru.seq))
+ WRITE_ONCE(pgdat->memcg_lru.seq, pgdat->memcg_lru.seq + 1);
+
+ spin_unlock(&pgdat->memcg_lru.lock);
+}
+
+void lru_gen_online_memcg(struct mem_cgroup *memcg)
+{
+ int gen;
+ int nid;
+ int bin = get_random_u32_below(MEMCG_NR_BINS);
+
+ for_each_node(nid) {
+ struct pglist_data *pgdat = NODE_DATA(nid);
+ struct lruvec *lruvec = get_lruvec(memcg, nid);
+
+ spin_lock(&pgdat->memcg_lru.lock);
+
+ VM_WARN_ON_ONCE(!hlist_nulls_unhashed(&lruvec->lrugen.list));
+
+ gen = get_memcg_gen(pgdat->memcg_lru.seq);
+
+ hlist_nulls_add_tail_rcu(&lruvec->lrugen.list, &pgdat->memcg_lru.fifo[gen][bin]);
+ pgdat->memcg_lru.nr_memcgs[gen]++;
+
+ lruvec->lrugen.gen = gen;
+
+ spin_unlock(&pgdat->memcg_lru.lock);
+ }
+}
+
+void lru_gen_offline_memcg(struct mem_cgroup *memcg)
+{
+ int nid;
+
+ for_each_node(nid) {
+ struct lruvec *lruvec = get_lruvec(memcg, nid);
+
+ lru_gen_rotate_memcg(lruvec, MEMCG_LRU_OLD);
+ }
+}
+
+void lru_gen_release_memcg(struct mem_cgroup *memcg)
+{
+ int gen;
+ int nid;
+
+ for_each_node(nid) {
+ struct pglist_data *pgdat = NODE_DATA(nid);
+ struct lruvec *lruvec = get_lruvec(memcg, nid);
+
+ spin_lock(&pgdat->memcg_lru.lock);
+
+ VM_WARN_ON_ONCE(hlist_nulls_unhashed(&lruvec->lrugen.list));
+
+ gen = lruvec->lrugen.gen;
+
+ hlist_nulls_del_rcu(&lruvec->lrugen.list);
+ pgdat->memcg_lru.nr_memcgs[gen]--;
+
+ if (!pgdat->memcg_lru.nr_memcgs[gen] && gen == get_memcg_gen(pgdat->memcg_lru.seq))
+ WRITE_ONCE(pgdat->memcg_lru.seq, pgdat->memcg_lru.seq + 1);
+
+ spin_unlock(&pgdat->memcg_lru.lock);
+ }
+}
+
+void lru_gen_soft_reclaim(struct lruvec *lruvec)
+{
+ /* see the comment on MEMCG_NR_GENS */
+ if (lru_gen_memcg_seg(lruvec) != MEMCG_LRU_HEAD)
+ lru_gen_rotate_memcg(lruvec, MEMCG_LRU_HEAD);
+}
+
+#else /* !CONFIG_MEMCG */
+
+static int lru_gen_memcg_seg(struct lruvec *lruvec)
+{
+ return 0;
+}
+
+#endif
+
+/******************************************************************************
* the eviction
******************************************************************************/
@@ -5397,53 +5539,6 @@ done:
pgdat->kswapd_failures = 0;
}
-#ifdef CONFIG_MEMCG
-void lru_gen_rotate_memcg(struct lruvec *lruvec, int op)
-{
- int seg;
- int old, new;
- int bin = get_random_u32_below(MEMCG_NR_BINS);
- struct pglist_data *pgdat = lruvec_pgdat(lruvec);
-
- spin_lock(&pgdat->memcg_lru.lock);
-
- VM_WARN_ON_ONCE(hlist_nulls_unhashed(&lruvec->lrugen.list));
-
- seg = 0;
- new = old = lruvec->lrugen.gen;
-
- /* see the comment on MEMCG_NR_GENS */
- if (op == MEMCG_LRU_HEAD)
- seg = MEMCG_LRU_HEAD;
- else if (op == MEMCG_LRU_TAIL)
- seg = MEMCG_LRU_TAIL;
- else if (op == MEMCG_LRU_OLD)
- new = get_memcg_gen(pgdat->memcg_lru.seq);
- else if (op == MEMCG_LRU_YOUNG)
- new = get_memcg_gen(pgdat->memcg_lru.seq + 1);
- else
- VM_WARN_ON_ONCE(true);
-
- hlist_nulls_del_rcu(&lruvec->lrugen.list);
-
- if (op == MEMCG_LRU_HEAD || op == MEMCG_LRU_OLD)
- hlist_nulls_add_head_rcu(&lruvec->lrugen.list, &pgdat->memcg_lru.fifo[new][bin]);
- else
- hlist_nulls_add_tail_rcu(&lruvec->lrugen.list, &pgdat->memcg_lru.fifo[new][bin]);
-
- pgdat->memcg_lru.nr_memcgs[old]--;
- pgdat->memcg_lru.nr_memcgs[new]++;
-
- lruvec->lrugen.gen = new;
- WRITE_ONCE(lruvec->lrugen.seg, seg);
-
- if (!pgdat->memcg_lru.nr_memcgs[old] && old == get_memcg_gen(pgdat->memcg_lru.seq))
- WRITE_ONCE(pgdat->memcg_lru.seq, pgdat->memcg_lru.seq + 1);
-
- spin_unlock(&pgdat->memcg_lru.lock);
-}
-#endif
-
/******************************************************************************
* state change
******************************************************************************/
@@ -6089,67 +6184,6 @@ void lru_gen_exit_memcg(struct mem_cgrou
}
}
-void lru_gen_online_memcg(struct mem_cgroup *memcg)
-{
- int gen;
- int nid;
- int bin = get_random_u32_below(MEMCG_NR_BINS);
-
- for_each_node(nid) {
- struct pglist_data *pgdat = NODE_DATA(nid);
- struct lruvec *lruvec = get_lruvec(memcg, nid);
-
- spin_lock(&pgdat->memcg_lru.lock);
-
- VM_WARN_ON_ONCE(!hlist_nulls_unhashed(&lruvec->lrugen.list));
-
- gen = get_memcg_gen(pgdat->memcg_lru.seq);
-
- hlist_nulls_add_tail_rcu(&lruvec->lrugen.list, &pgdat->memcg_lru.fifo[gen][bin]);
- pgdat->memcg_lru.nr_memcgs[gen]++;
-
- lruvec->lrugen.gen = gen;
-
- spin_unlock(&pgdat->memcg_lru.lock);
- }
-}
-
-void lru_gen_offline_memcg(struct mem_cgroup *memcg)
-{
- int nid;
-
- for_each_node(nid) {
- struct lruvec *lruvec = get_lruvec(memcg, nid);
-
- lru_gen_rotate_memcg(lruvec, MEMCG_LRU_OLD);
- }
-}
-
-void lru_gen_release_memcg(struct mem_cgroup *memcg)
-{
- int gen;
- int nid;
-
- for_each_node(nid) {
- struct pglist_data *pgdat = NODE_DATA(nid);
- struct lruvec *lruvec = get_lruvec(memcg, nid);
-
- spin_lock(&pgdat->memcg_lru.lock);
-
- VM_WARN_ON_ONCE(hlist_nulls_unhashed(&lruvec->lrugen.list));
-
- gen = lruvec->lrugen.gen;
-
- hlist_nulls_del_rcu(&lruvec->lrugen.list);
- pgdat->memcg_lru.nr_memcgs[gen]--;
-
- if (!pgdat->memcg_lru.nr_memcgs[gen] && gen == get_memcg_gen(pgdat->memcg_lru.seq))
- WRITE_ONCE(pgdat->memcg_lru.seq, pgdat->memcg_lru.seq + 1);
-
- spin_unlock(&pgdat->memcg_lru.lock);
- }
-}
-
#endif /* CONFIG_MEMCG */
static int __init init_lru_gen(void)

40
target/linux/generic/backport-6.1/020-v6.3-16-UPSTREAM-mm-multi-gen-LRU-improve-lru_gen_exit_memcg.patch
View File

@@ -1,40 +0,0 @@
From bec433f29537652ed054148edfd7e2183ddcf7c3 Mon Sep 17 00:00:00 2001
From: "T.J. Alumbaugh" <talumbau@google.com>
Date: Wed, 18 Jan 2023 00:18:25 +0000
Subject: [PATCH 16/19] UPSTREAM: mm: multi-gen LRU: improve
lru_gen_exit_memcg()
Add warnings and poison ->next.
Link: https://lkml.kernel.org/r/20230118001827.1040870-6-talumbau@google.com
Change-Id: I53de9e04c1ae941e122b33cd45d2bbb5f34aae0c
Signed-off-by: T.J. Alumbaugh <talumbau@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit 37cc99979d04cca677c0ad5c0acd1149ec165d1b)
Bug: 274865848
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
mm/vmscan.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -6171,12 +6171,17 @@ void lru_gen_exit_memcg(struct mem_cgrou
int i;
int nid;
+ VM_WARN_ON_ONCE(!list_empty(&memcg->mm_list.fifo));
+
for_each_node(nid) {
struct lruvec *lruvec = get_lruvec(memcg, nid);
+ VM_WARN_ON_ONCE(lruvec->mm_state.nr_walkers);
VM_WARN_ON_ONCE(memchr_inv(lruvec->lrugen.nr_pages, 0,
sizeof(lruvec->lrugen.nr_pages)));
+ lruvec->lrugen.list.next = LIST_POISON1;
+
for (i = 0; i < NR_BLOOM_FILTERS; i++) {
bitmap_free(lruvec->mm_state.filters[i]);
lruvec->mm_state.filters[i] = NULL;

135
target/linux/generic/backport-6.1/020-v6.3-17-UPSTREAM-mm-multi-gen-LRU-improve-walk_pmd_range.patch
View File

@@ -1,135 +0,0 @@
From fc0e3b06e0f19917b7ecad7967a72f61d4743644 Mon Sep 17 00:00:00 2001
From: "T.J. Alumbaugh" <talumbau@google.com>
Date: Wed, 18 Jan 2023 00:18:26 +0000
Subject: [PATCH 17/19] UPSTREAM: mm: multi-gen LRU: improve walk_pmd_range()
Improve readability of walk_pmd_range() and walk_pmd_range_locked().
Link: https://lkml.kernel.org/r/20230118001827.1040870-7-talumbau@google.com
Change-Id: Ia084fbf53fe989673b7804ca8ca520af12d7d52a
Signed-off-by: T.J. Alumbaugh <talumbau@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit b5ff4133617d0eced35b685da0bd0929dd9fabb7)
Bug: 274865848
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
mm/vmscan.c | 40 ++++++++++++++++++++--------------------
1 file changed, 20 insertions(+), 20 deletions(-)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3980,8 +3980,8 @@ restart:
}
#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG)
-static void walk_pmd_range_locked(pud_t *pud, unsigned long next, struct vm_area_struct *vma,
- struct mm_walk *args, unsigned long *bitmap, unsigned long *start)
+static void walk_pmd_range_locked(pud_t *pud, unsigned long addr, struct vm_area_struct *vma,
+ struct mm_walk *args, unsigned long *bitmap, unsigned long *first)
{
int i;
pmd_t *pmd;
@@ -3994,18 +3994,19 @@ static void walk_pmd_range_locked(pud_t
VM_WARN_ON_ONCE(pud_leaf(*pud));
/* try to batch at most 1+MIN_LRU_BATCH+1 entries */
- if (*start == -1) {
- *start = next;
+ if (*first == -1) {
+ *first = addr;
+ bitmap_zero(bitmap, MIN_LRU_BATCH);
return;
}
- i = next == -1 ? 0 : pmd_index(next) - pmd_index(*start);
+ i = addr == -1 ? 0 : pmd_index(addr) - pmd_index(*first);
if (i && i <= MIN_LRU_BATCH) {
__set_bit(i - 1, bitmap);
return;
}
- pmd = pmd_offset(pud, *start);
+ pmd = pmd_offset(pud, *first);
ptl = pmd_lockptr(args->mm, pmd);
if (!spin_trylock(ptl))
@@ -4016,15 +4017,16 @@ static void walk_pmd_range_locked(pud_t
do {
unsigned long pfn;
struct folio *folio;
- unsigned long addr = i ? (*start & PMD_MASK) + i * PMD_SIZE : *start;
+
+ /* don't round down the first address */
+ addr = i ? (*first & PMD_MASK) + i * PMD_SIZE : *first;
pfn = get_pmd_pfn(pmd[i], vma, addr);
if (pfn == -1)
goto next;
if (!pmd_trans_huge(pmd[i])) {
- if (arch_has_hw_nonleaf_pmd_young() &&
- get_cap(LRU_GEN_NONLEAF_YOUNG))
+ if (arch_has_hw_nonleaf_pmd_young() && get_cap(LRU_GEN_NONLEAF_YOUNG))
pmdp_test_and_clear_young(vma, addr, pmd + i);
goto next;
}
@@ -4053,12 +4055,11 @@ next:
arch_leave_lazy_mmu_mode();
spin_unlock(ptl);
done:
- *start = -1;
- bitmap_zero(bitmap, MIN_LRU_BATCH);
+ *first = -1;
}
#else
-static void walk_pmd_range_locked(pud_t *pud, unsigned long next, struct vm_area_struct *vma,
- struct mm_walk *args, unsigned long *bitmap, unsigned long *start)
+static void walk_pmd_range_locked(pud_t *pud, unsigned long addr, struct vm_area_struct *vma,
+ struct mm_walk *args, unsigned long *bitmap, unsigned long *first)
{
}
#endif
@@ -4071,9 +4072,9 @@ static void walk_pmd_range(pud_t *pud, u
unsigned long next;
unsigned long addr;
struct vm_area_struct *vma;
- unsigned long pos = -1;
+ unsigned long bitmap[BITS_TO_LONGS(MIN_LRU_BATCH)];
+ unsigned long first = -1;
struct lru_gen_mm_walk *walk = args->private;
- unsigned long bitmap[BITS_TO_LONGS(MIN_LRU_BATCH)] = {};
VM_WARN_ON_ONCE(pud_leaf(*pud));
@@ -4115,18 +4116,17 @@ restart:
if (pfn < pgdat->node_start_pfn || pfn >= pgdat_end_pfn(pgdat))
continue;
- walk_pmd_range_locked(pud, addr, vma, args, bitmap, &pos);
+ walk_pmd_range_locked(pud, addr, vma, args, bitmap, &first);
continue;
}
#endif
walk->mm_stats[MM_NONLEAF_TOTAL]++;
- if (arch_has_hw_nonleaf_pmd_young() &&
- get_cap(LRU_GEN_NONLEAF_YOUNG)) {
+ if (arch_has_hw_nonleaf_pmd_young() && get_cap(LRU_GEN_NONLEAF_YOUNG)) {
if (!pmd_young(val))
continue;
- walk_pmd_range_locked(pud, addr, vma, args, bitmap, &pos);
+ walk_pmd_range_locked(pud, addr, vma, args, bitmap, &first);
}
if (!walk->force_scan && !test_bloom_filter(walk->lruvec, walk->max_seq, pmd + i))
@@ -4143,7 +4143,7 @@ restart:
update_bloom_filter(walk->lruvec, walk->max_seq + 1, pmd + i);
}
- walk_pmd_range_locked(pud, -1, vma, args, bitmap, &pos);
+ walk_pmd_range_locked(pud, -1, vma, args, bitmap, &first);
if (i < PTRS_PER_PMD && get_next_vma(PUD_MASK, PMD_SIZE, args, &start, &end))
goto restart;

148
target/linux/generic/backport-6.1/020-v6.3-18-UPSTREAM-mm-multi-gen-LRU-simplify-lru_gen_look_arou.patch
View File

@@ -1,148 +0,0 @@
From e604c3ccb4dfbdde2467fccef9bb36170a392695 Mon Sep 17 00:00:00 2001
From: "T.J. Alumbaugh" <talumbau@google.com>
Date: Wed, 18 Jan 2023 00:18:27 +0000
Subject: [PATCH 18/19] UPSTREAM: mm: multi-gen LRU: simplify
lru_gen_look_around()
Update the folio generation in place with or without
current->reclaim_state->mm_walk. The LRU lock is held for longer, if
mm_walk is NULL and the number of folios to update is more than
PAGEVEC_SIZE.
This causes a measurable regression from the LRU lock contention during a
microbencmark. But a tiny regression is not worth the complexity.
Link: https://lkml.kernel.org/r/20230118001827.1040870-8-talumbau@google.com
Change-Id: I9ce18b4f4062e6c1c13c98ece9422478eb8e1846
Signed-off-by: T.J. Alumbaugh <talumbau@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit abf086721a2f1e6897c57796f7268df1b194c750)
Bug: 274865848
Signed-off-by: T.J. Mercier <tjmercier@google.com>
---
mm/vmscan.c | 73 +++++++++++++++++------------------------------------
1 file changed, 23 insertions(+), 50 deletions(-)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4573,13 +4573,12 @@ static void lru_gen_age_node(struct pgli
void lru_gen_look_around(struct page_vma_mapped_walk *pvmw)
{
int i;
- pte_t *pte;
unsigned long start;
unsigned long end;
- unsigned long addr;
struct lru_gen_mm_walk *walk;
int young = 0;
- unsigned long bitmap[BITS_TO_LONGS(MIN_LRU_BATCH)] = {};
+ pte_t *pte = pvmw->pte;
+ unsigned long addr = pvmw->address;
struct folio *folio = pfn_folio(pvmw->pfn);
struct mem_cgroup *memcg = folio_memcg(folio);
struct pglist_data *pgdat = folio_pgdat(folio);
@@ -4596,25 +4595,28 @@ void lru_gen_look_around(struct page_vma
/* avoid taking the LRU lock under the PTL when possible */
walk = current->reclaim_state ? current->reclaim_state->mm_walk : NULL;
- start = max(pvmw->address & PMD_MASK, pvmw->vma->vm_start);
- end = min(pvmw->address | ~PMD_MASK, pvmw->vma->vm_end - 1) + 1;
+ start = max(addr & PMD_MASK, pvmw->vma->vm_start);
+ end = min(addr | ~PMD_MASK, pvmw->vma->vm_end - 1) + 1;
if (end - start > MIN_LRU_BATCH * PAGE_SIZE) {
- if (pvmw->address - start < MIN_LRU_BATCH * PAGE_SIZE / 2)
+ if (addr - start < MIN_LRU_BATCH * PAGE_SIZE / 2)
end = start + MIN_LRU_BATCH * PAGE_SIZE;
- else if (end - pvmw->address < MIN_LRU_BATCH * PAGE_SIZE / 2)
+ else if (end - addr < MIN_LRU_BATCH * PAGE_SIZE / 2)
start = end - MIN_LRU_BATCH * PAGE_SIZE;
else {
- start = pvmw->address - MIN_LRU_BATCH * PAGE_SIZE / 2;
- end = pvmw->address + MIN_LRU_BATCH * PAGE_SIZE / 2;
+ start = addr - MIN_LRU_BATCH * PAGE_SIZE / 2;
+ end = addr + MIN_LRU_BATCH * PAGE_SIZE / 2;
}
}
- pte = pvmw->pte - (pvmw->address - start) / PAGE_SIZE;
+ /* folio_update_gen() requires stable folio_memcg() */
+ if (!mem_cgroup_trylock_pages(memcg))
+ return;
- rcu_read_lock();
arch_enter_lazy_mmu_mode();
+ pte -= (addr - start) / PAGE_SIZE;
+
for (i = 0, addr = start; addr != end; i++, addr += PAGE_SIZE) {
unsigned long pfn;
@@ -4639,56 +4641,27 @@ void lru_gen_look_around(struct page_vma
!folio_test_swapcache(folio)))
folio_mark_dirty(folio);
+ if (walk) {
+ old_gen = folio_update_gen(folio, new_gen);
+ if (old_gen >= 0 && old_gen != new_gen)
+ update_batch_size(walk, folio, old_gen, new_gen);
+
+ continue;
+ }
+
old_gen = folio_lru_gen(folio);
if (old_gen < 0)
folio_set_referenced(folio);
else if (old_gen != new_gen)
- __set_bit(i, bitmap);
+ folio_activate(folio);
}
arch_leave_lazy_mmu_mode();
- rcu_read_unlock();
+ mem_cgroup_unlock_pages();
/* feedback from rmap walkers to page table walkers */
if (suitable_to_scan(i, young))
update_bloom_filter(lruvec, max_seq, pvmw->pmd);
-
- if (!walk && bitmap_weight(bitmap, MIN_LRU_BATCH) < PAGEVEC_SIZE) {
- for_each_set_bit(i, bitmap, MIN_LRU_BATCH) {
- folio = pfn_folio(pte_pfn(pte[i]));
- folio_activate(folio);
- }
- return;
- }
-
- /* folio_update_gen() requires stable folio_memcg() */
- if (!mem_cgroup_trylock_pages(memcg))
- return;
-
- if (!walk) {
- spin_lock_irq(&lruvec->lru_lock);
- new_gen = lru_gen_from_seq(lruvec->lrugen.max_seq);
- }
-
- for_each_set_bit(i, bitmap, MIN_LRU_BATCH) {
- folio = pfn_folio(pte_pfn(pte[i]));
- if (folio_memcg_rcu(folio) != memcg)
- continue;
-
- old_gen = folio_update_gen(folio, new_gen);
- if (old_gen < 0 || old_gen == new_gen)
- continue;
-
- if (walk)
- update_batch_size(walk, folio, old_gen, new_gen);
- else
- lru_gen_update_size(lruvec, folio, old_gen, new_gen);
- }
-
- if (!walk)
- spin_unlock_irq(&lruvec->lru_lock);
-
- mem_cgroup_unlock_pages();
}
/******************************************************************************

273
target/linux/generic/backport-6.1/020-v6.4-19-mm-Multi-gen-LRU-remove-wait_event_killable.patch
View File

@@ -1,273 +0,0 @@
From 418038c22452df38cde519cc8c662bb15139764a Mon Sep 17 00:00:00 2001
From: Kalesh Singh <kaleshsingh@google.com>
Date: Thu, 13 Apr 2023 14:43:26 -0700
Subject: [PATCH 19/19] mm: Multi-gen LRU: remove wait_event_killable()
Android 14 and later default to MGLRU [1] and field telemetry showed
occasional long tail latency (>100ms) in the reclaim path.
Tracing revealed priority inversion in the reclaim path. In
try_to_inc_max_seq(), when high priority tasks were blocked on
wait_event_killable(), the preemption of the low priority task to call
wake_up_all() caused those high priority tasks to wait longer than
necessary. In general, this problem is not different from others of its
kind, e.g., one caused by mutex_lock(). However, it is specific to MGLRU
because it introduced the new wait queue lruvec->mm_state.wait.
The purpose of this new wait queue is to avoid the thundering herd
problem. If many direct reclaimers rush into try_to_inc_max_seq(), only
one can succeed, i.e., the one to wake up the rest, and the rest who
failed might cause premature OOM kills if they do not wait. So far there
is no evidence supporting this scenario, based on how often the wait has
been hit. And this begs the question how useful the wait queue is in
practice.
Based on Minchan's recommendation, which is in line with his commit
6d4675e60135 ("mm: don't be stuck to rmap lock on reclaim path") and the
rest of the MGLRU code which also uses trylock when possible, remove the
wait queue.
[1] https://android-review.googlesource.com/q/I7ed7fbfd6ef9ce10053347528125dd98c39e50bf
Link: https://lkml.kernel.org/r/20230413214326.2147568-1-kaleshsingh@google.com
Fixes: bd74fdaea146 ("mm: multi-gen LRU: support page table walks")
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
Suggested-by: Minchan Kim <minchan@kernel.org>
Reported-by: Wei Wang <wvw@google.com>
Acked-by: Yu Zhao <yuzhao@google.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Jan Alexander Steffens (heftig) <heftig@archlinux.org>
Cc: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: Suleiman Souhlal <suleiman@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
include/linux/mmzone.h | 8 +--
mm/vmscan.c | 112 +++++++++++++++--------------------------
2 files changed, 42 insertions(+), 78 deletions(-)
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -453,18 +453,14 @@ enum {
struct lru_gen_mm_state {
/* set to max_seq after each iteration */
unsigned long seq;
- /* where the current iteration continues (inclusive) */
+ /* where the current iteration continues after */
struct list_head *head;
- /* where the last iteration ended (exclusive) */
+ /* where the last iteration ended before */
struct list_head *tail;
- /* to wait for the last page table walker to finish */
- struct wait_queue_head wait;
/* Bloom filters flip after each iteration */
unsigned long *filters[NR_BLOOM_FILTERS];
/* the mm stats for debugging */
unsigned long stats[NR_HIST_GENS][NR_MM_STATS];
- /* the number of concurrent page table walkers */
- int nr_walkers;
};
struct lru_gen_mm_walk {
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3371,18 +3371,13 @@ void lru_gen_del_mm(struct mm_struct *mm
if (!lruvec)
continue;
- /* where the last iteration ended (exclusive) */
+ /* where the current iteration continues after */
+ if (lruvec->mm_state.head == &mm->lru_gen.list)
+ lruvec->mm_state.head = lruvec->mm_state.head->prev;
+
+ /* where the last iteration ended before */
if (lruvec->mm_state.tail == &mm->lru_gen.list)
lruvec->mm_state.tail = lruvec->mm_state.tail->next;
-
- /* where the current iteration continues (inclusive) */
- if (lruvec->mm_state.head != &mm->lru_gen.list)
- continue;
-
- lruvec->mm_state.head = lruvec->mm_state.head->next;
- /* the deletion ends the current iteration */
- if (lruvec->mm_state.head == &mm_list->fifo)
- WRITE_ONCE(lruvec->mm_state.seq, lruvec->mm_state.seq + 1);
}
list_del_init(&mm->lru_gen.list);
@@ -3478,68 +3473,54 @@ static bool iterate_mm_list(struct lruve
struct mm_struct **iter)
{
bool first = false;
- bool last = true;
+ bool last = false;
struct mm_struct *mm = NULL;
struct mem_cgroup *memcg = lruvec_memcg(lruvec);
struct lru_gen_mm_list *mm_list = get_mm_list(memcg);
struct lru_gen_mm_state *mm_state = &lruvec->mm_state;
/*
- * There are four interesting cases for this page table walker:
- * 1. It tries to start a new iteration of mm_list with a stale max_seq;
- * there is nothing left to do.
- * 2. It's the first of the current generation, and it needs to reset
- * the Bloom filter for the next generation.
- * 3. It reaches the end of mm_list, and it needs to increment
- * mm_state->seq; the iteration is done.
- * 4. It's the last of the current generation, and it needs to reset the
- * mm stats counters for the next generation.
+ * mm_state->seq is incremented after each iteration of mm_list. There
+ * are three interesting cases for this page table walker:
+ * 1. It tries to start a new iteration with a stale max_seq: there is
+ * nothing left to do.
+ * 2. It started the next iteration: it needs to reset the Bloom filter
+ * so that a fresh set of PTE tables can be recorded.
+ * 3. It ended the current iteration: it needs to reset the mm stats
+ * counters and tell its caller to increment max_seq.
*/
spin_lock(&mm_list->lock);
VM_WARN_ON_ONCE(mm_state->seq + 1 < walk->max_seq);
- VM_WARN_ON_ONCE(*iter && mm_state->seq > walk->max_seq);
- VM_WARN_ON_ONCE(*iter && !mm_state->nr_walkers);
- if (walk->max_seq <= mm_state->seq) {
- if (!*iter)
- last = false;
+ if (walk->max_seq <= mm_state->seq)
goto done;
- }
- if (!mm_state->nr_walkers) {
- VM_WARN_ON_ONCE(mm_state->head && mm_state->head != &mm_list->fifo);
+ if (!mm_state->head)
+ mm_state->head = &mm_list->fifo;
- mm_state->head = mm_list->fifo.next;
+ if (mm_state->head == &mm_list->fifo)
first = true;
- }
-
- while (!mm && mm_state->head != &mm_list->fifo) {
- mm = list_entry(mm_state->head, struct mm_struct, lru_gen.list);
+ do {
mm_state->head = mm_state->head->next;
+ if (mm_state->head == &mm_list->fifo) {
+ WRITE_ONCE(mm_state->seq, mm_state->seq + 1);
+ last = true;
+ break;
+ }
/* force scan for those added after the last iteration */
- if (!mm_state->tail || mm_state->tail == &mm->lru_gen.list) {
- mm_state->tail = mm_state->head;
+ if (!mm_state->tail || mm_state->tail == mm_state->head) {
+ mm_state->tail = mm_state->head->next;
walk->force_scan = true;
}
+ mm = list_entry(mm_state->head, struct mm_struct, lru_gen.list);
if (should_skip_mm(mm, walk))
mm = NULL;
- }
-
- if (mm_state->head == &mm_list->fifo)
- WRITE_ONCE(mm_state->seq, mm_state->seq + 1);
+ } while (!mm);
done:
- if (*iter && !mm)
- mm_state->nr_walkers--;
- if (!*iter && mm)
- mm_state->nr_walkers++;
-
- if (mm_state->nr_walkers)
- last = false;
-
if (*iter || last)
reset_mm_stats(lruvec, walk, last);
@@ -3567,9 +3548,9 @@ static bool iterate_mm_list_nowalk(struc
VM_WARN_ON_ONCE(mm_state->seq + 1 < max_seq);
- if (max_seq > mm_state->seq && !mm_state->nr_walkers) {
- VM_WARN_ON_ONCE(mm_state->head && mm_state->head != &mm_list->fifo);
-
+ if (max_seq > mm_state->seq) {
+ mm_state->head = NULL;
+ mm_state->tail = NULL;
WRITE_ONCE(mm_state->seq, mm_state->seq + 1);
reset_mm_stats(lruvec, NULL, true);
success = true;
@@ -4172,10 +4153,6 @@ restart:
walk_pmd_range(&val, addr, next, args);
- /* a racy check to curtail the waiting time */
- if (wq_has_sleeper(&walk->lruvec->mm_state.wait))
- return 1;
-
if (need_resched() || walk->batched >= MAX_LRU_BATCH) {
end = (addr | ~PUD_MASK) + 1;
goto done;
@@ -4208,8 +4185,14 @@ static void walk_mm(struct lruvec *lruve
walk->next_addr = FIRST_USER_ADDRESS;
do {
+ DEFINE_MAX_SEQ(lruvec);
+
err = -EBUSY;
+ /* another thread might have called inc_max_seq() */
+ if (walk->max_seq != max_seq)
+ break;
+
/* folio_update_gen() requires stable folio_memcg() */
if (!mem_cgroup_trylock_pages(memcg))
break;
@@ -4444,25 +4427,12 @@ static bool try_to_inc_max_seq(struct lr
success = iterate_mm_list(lruvec, walk, &mm);
if (mm)
walk_mm(lruvec, mm, walk);
-
- cond_resched();
} while (mm);
done:
- if (!success) {
- if (sc->priority <= DEF_PRIORITY - 2)
- wait_event_killable(lruvec->mm_state.wait,
- max_seq < READ_ONCE(lrugen->max_seq));
- return false;
- }
+ if (success)
+ inc_max_seq(lruvec, can_swap, force_scan);
- VM_WARN_ON_ONCE(max_seq != READ_ONCE(lrugen->max_seq));
-
- inc_max_seq(lruvec, can_swap, force_scan);
- /* either this sees any waiters or they will see updated max_seq */
- if (wq_has_sleeper(&lruvec->mm_state.wait))
- wake_up_all(&lruvec->mm_state.wait);
-
- return true;
+ return success;
}
/******************************************************************************
@@ -6116,7 +6086,6 @@ void lru_gen_init_lruvec(struct lruvec *
INIT_LIST_HEAD(&lrugen->folios[gen][type][zone]);
lruvec->mm_state.seq = MIN_NR_GENS;
- init_waitqueue_head(&lruvec->mm_state.wait);
}
#ifdef CONFIG_MEMCG
@@ -6149,7 +6118,6 @@ void lru_gen_exit_memcg(struct mem_cgrou
for_each_node(nid) {
struct lruvec *lruvec = get_lruvec(memcg, nid);
- VM_WARN_ON_ONCE(lruvec->mm_state.nr_walkers);
VM_WARN_ON_ONCE(memchr_inv(lruvec->lrugen.nr_pages, 0,
sizeof(lruvec->lrugen.nr_pages)));

58
target/linux/generic/backport-6.1/200-v6.3-bitfield-add-FIELD_PREP_CONST.patch
View File

@@ -1,58 +0,0 @@
From e2192de59e457aef8d1f055a452131f0b3e5d097 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 18 Jan 2023 14:26:53 +0100
Subject: [PATCH] bitfield: add FIELD_PREP_CONST()
Neither FIELD_PREP() nor *_encode_bits() can be used
in constant contexts (such as initializers), but we
don't want to define shift constants for all masks
just for use in initializers, and having checks that
the values fit is also useful.
Therefore, add FIELD_PREP_CONST() which is a smaller
version of FIELD_PREP() that can only take constant
arguments and has less friendly (but not less strict)
error checks, and expands to a constant value.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20230118142652.53f20593504b.Iaeea0aee77a6493d70e573b4aa55c91c00e01e4b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
include/linux/bitfield.h | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
--- a/include/linux/bitfield.h
+++ b/include/linux/bitfield.h
@@ -115,6 +115,32 @@
((typeof(_mask))(_val) << __bf_shf(_mask)) & (_mask); \
})
+#define __BF_CHECK_POW2(n) BUILD_BUG_ON_ZERO(((n) & ((n) - 1)) != 0)
+
+/**
+ * FIELD_PREP_CONST() - prepare a constant bitfield element
+ * @_mask: shifted mask defining the field's length and position
+ * @_val: value to put in the field
+ *
+ * FIELD_PREP_CONST() masks and shifts up the value. The result should
+ * be combined with other fields of the bitfield using logical OR.
+ *
+ * Unlike FIELD_PREP() this is a constant expression and can therefore
+ * be used in initializers. Error checking is less comfortable for this
+ * version, and non-constant masks cannot be used.
+ */
+#define FIELD_PREP_CONST(_mask, _val) \
+ ( \
+ /* mask must be non-zero */ \
+ BUILD_BUG_ON_ZERO((_mask) == 0) + \
+ /* check if value fits */ \
+ BUILD_BUG_ON_ZERO(~((_mask) >> __bf_shf(_mask)) & (_val)) + \
+ /* check if mask is contiguous */ \
+ __BF_CHECK_POW2((_mask) + (1ULL << __bf_shf(_mask))) + \
+ /* and create the value */ \
+ (((typeof(_mask))(_val) << __bf_shf(_mask)) & (_mask)) \
+ )
+
/**
* FIELD_GET() - extract a bitfield element
* @_mask: shifted mask defining the field's length and position

63
target/linux/generic/backport-6.1/300-v6.2-powerpc-suppress-some-linker-warnings-in-recent-link.patch
View File

@@ -1,63 +0,0 @@
From 579aee9fc594af94c242068c011b0233563d4bbf Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Mon, 10 Oct 2022 16:57:21 +1100
Subject: [PATCH] powerpc: suppress some linker warnings in recent linker
versions
This is a follow on from commit
0d362be5b142 ("Makefile: link with -z noexecstack --no-warn-rwx-segments")
for arch/powerpc/boot to address wanrings like:
ld: warning: opal-calls.o: missing .note.GNU-stack section implies executable stack
ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
ld: warning: arch/powerpc/boot/zImage.epapr has a LOAD segment with RWX permissions
This fixes issue https://github.com/linuxppc/issues/issues/417
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221010165721.106267e6@canb.auug.org.au
---
arch/powerpc/boot/wrapper | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -215,6 +215,11 @@ ld_version()
}'
}
+ld_is_lld()
+{
+ ${CROSS}ld -V 2>&1 | grep -q LLD
+}
+
# Do not include PT_INTERP segment when linking pie. Non-pie linking
# just ignores this option.
LD_VERSION=$(${CROSS}ld --version | ld_version)
@@ -223,6 +228,14 @@ if [ "$LD_VERSION" -ge "$LD_NO_DL_MIN_VE
nodl="--no-dynamic-linker"
fi
+# suppress some warnings in recent ld versions
+nowarn="-z noexecstack"
+if ! ld_is_lld; then
+ if [ "$LD_VERSION" -ge "$(echo 2.39 | ld_version)" ]; then
+ nowarn="$nowarn --no-warn-rwx-segments"
+ fi
+fi
+
platformo=$object/"$platform".o
lds=$object/zImage.lds
ext=strip
@@ -504,7 +517,7 @@ if [ "$platform" != "miboot" ]; then
text_start="-Ttext $link_address"
fi
#link everything
- ${CROSS}ld -m $format -T $lds $text_start $pie $nodl $rodynamic $notext -o "$ofile" $map \
+ ${CROSS}ld -m $format -T $lds $text_start $pie $nodl $nowarn $rodynamic $notext -o "$ofile" $map \
$platformo $tmp $object/wrapper.a
rm $tmp
fi

161
target/linux/generic/backport-6.1/301-v6.9-kernel.h-removed-REPEAT_BYTE-from-kernel.h.patch
View File

@@ -1,161 +0,0 @@
From 66a5c40f60f5d88ad8d47ba6a4ba05892853fa1f Mon Sep 17 00:00:00 2001
From: Tanzir Hasan <tanzirh@google.com>
Date: Tue, 26 Dec 2023 18:00:00 +0000
Subject: [PATCH] kernel.h: removed REPEAT_BYTE from kernel.h
This patch creates wordpart.h and includes it in asm/word-at-a-time.h
for all architectures. WORD_AT_A_TIME_CONSTANTS depends on kernel.h
because of REPEAT_BYTE. Moving this to another header and including it
where necessary allows us to not include the bloated kernel.h. Making
this implicit dependency on REPEAT_BYTE explicit allows for later
improvements in the lib/string.c inclusion list.
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Tanzir Hasan <tanzirh@google.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231226-libstringheader-v6-1-80aa08c7652c@google.com
Signed-off-by: Kees Cook <keescook@chromium.org>
---
arch/arm/include/asm/word-at-a-time.h | 3 ++-
arch/arm64/include/asm/word-at-a-time.h | 3 ++-
arch/powerpc/include/asm/word-at-a-time.h | 4 ++--
arch/riscv/include/asm/word-at-a-time.h | 3 ++-
arch/s390/include/asm/word-at-a-time.h | 3 ++-
arch/sh/include/asm/word-at-a-time.h | 2 ++
arch/x86/include/asm/word-at-a-time.h | 3 ++-
arch/x86/kvm/mmu/mmu.c | 1 +
fs/namei.c | 2 +-
include/asm-generic/word-at-a-time.h | 3 ++-
include/linux/kernel.h | 8 --------
include/linux/wordpart.h | 13 +++++++++++++
12 files changed, 31 insertions(+), 17 deletions(-)
create mode 100644 include/linux/wordpart.h
--- a/arch/arm/include/asm/word-at-a-time.h
+++ b/arch/arm/include/asm/word-at-a-time.h
@@ -8,7 +8,8 @@
* Little-endian word-at-a-time zero byte handling.
* Heavily based on the x86 algorithm.
*/
-#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/wordpart.h>
struct word_at_a_time {
const unsigned long one_bits, high_bits;
--- a/arch/arm64/include/asm/word-at-a-time.h
+++ b/arch/arm64/include/asm/word-at-a-time.h
@@ -9,7 +9,8 @@
#ifndef __AARCH64EB__
-#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/wordpart.h>
struct word_at_a_time {
const unsigned long one_bits, high_bits;
--- a/arch/powerpc/include/asm/word-at-a-time.h
+++ b/arch/powerpc/include/asm/word-at-a-time.h
@@ -4,8 +4,8 @@
/*
* Word-at-a-time interfaces for PowerPC.
*/
-
-#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/wordpart.h>
#include <asm/asm-compat.h>
#include <asm/extable.h>
--- a/arch/sh/include/asm/word-at-a-time.h
+++ b/arch/sh/include/asm/word-at-a-time.h
@@ -5,6 +5,8 @@
#ifdef CONFIG_CPU_BIG_ENDIAN
# include <asm-generic/word-at-a-time.h>
#else
+#include <linux/bitops.h>
+#include <linux/wordpart.h>
/*
* Little-endian version cribbed from x86.
*/
--- a/arch/x86/include/asm/word-at-a-time.h
+++ b/arch/x86/include/asm/word-at-a-time.h
@@ -2,7 +2,8 @@
#ifndef _ASM_WORD_AT_A_TIME_H
#define _ASM_WORD_AT_A_TIME_H
-#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/wordpart.h>
/*
* This is largely generic for little-endian machines, but the
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -44,6 +44,7 @@
#include <linux/kern_levels.h>
#include <linux/kstrtox.h>
#include <linux/kthread.h>
+#include <linux/wordpart.h>
#include <asm/page.h>
#include <asm/memtype.h>
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -17,8 +17,8 @@
#include <linux/init.h>
#include <linux/export.h>
-#include <linux/kernel.h>
#include <linux/slab.h>
+#include <linux/wordpart.h>
#include <linux/fs.h>
#include <linux/namei.h>
#include <linux/pagemap.h>
--- a/include/asm-generic/word-at-a-time.h
+++ b/include/asm-generic/word-at-a-time.h
@@ -2,7 +2,8 @@
#ifndef _ASM_WORD_AT_A_TIME_H
#define _ASM_WORD_AT_A_TIME_H
-#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/wordpart.h>
#include <asm/byteorder.h>
#ifdef __BIG_ENDIAN
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -36,14 +36,6 @@
#define STACK_MAGIC 0xdeadbeef
-/**
- * REPEAT_BYTE - repeat the value @x multiple times as an unsigned long value
- * @x: value to repeat
- *
- * NOTE: @x is not checked for > 0xff; larger values produce odd results.
- */
-#define REPEAT_BYTE(x) ((~0ul / 0xff) * (x))
-
/* generic data direction definitions */
#define READ 0
#define WRITE 1
--- /dev/null
+++ b/include/linux/wordpart.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _LINUX_WORDPART_H
+#define _LINUX_WORDPART_H
+/**
+ * REPEAT_BYTE - repeat the value @x multiple times as an unsigned long value
+ * @x: value to repeat
+ *
+ * NOTE: @x is not checked for > 0xff; larger values produce odd results.
+ */
+#define REPEAT_BYTE(x) ((~0ul / 0xff) * (x))
+
+#endif // _LINUX_WORDPART_H

107
target/linux/generic/backport-6.1/302-v6.9-kernel.h-Move-upper_-_bits-and-lower_-_bits-to-wordp.patch
View File

@@ -1,107 +0,0 @@
From adeb04362d74188c1e22ccb824b15a0a7b3de2f4 Mon Sep 17 00:00:00 2001
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Wed, 14 Feb 2024 19:26:32 +0200
Subject: [PATCH] kernel.h: Move upper_*_bits() and lower_*_bits() to
wordpart.h
The wordpart.h header is collecting APIs related to the handling
parts of the word (usually in byte granularity). The upper_*_bits()
and lower_*_bits() are good candidates to be moved to there.
This helps to clean up header dependency hell with regard to kernel.h
as the latter gathers completely unrelated stuff together and slows
down compilation (especially when it's included into other header).
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240214172752.3605073-1-andriy.shevchenko@linux.intel.com
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
---
include/linux/kernel.h | 30 ++----------------------------
include/linux/wordpart.h | 29 +++++++++++++++++++++++++++++
2 files changed, 31 insertions(+), 28 deletions(-)
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -30,6 +30,8 @@
#include <linux/build_bug.h>
#include <linux/static_call_types.h>
#include <linux/instruction_pointer.h>
+#include <linux/wordpart.h>
+
#include <asm/byteorder.h>
#include <uapi/linux/kernel.h>
@@ -55,34 +57,6 @@
} \
)
-/**
- * upper_32_bits - return bits 32-63 of a number
- * @n: the number we're accessing
- *
- * A basic shift-right of a 64- or 32-bit quantity. Use this to suppress
- * the "right shift count >= width of type" warning when that quantity is
- * 32-bits.
- */
-#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
-
-/**
- * lower_32_bits - return bits 0-31 of a number
- * @n: the number we're accessing
- */
-#define lower_32_bits(n) ((u32)((n) & 0xffffffff))
-
-/**
- * upper_16_bits - return bits 16-31 of a number
- * @n: the number we're accessing
- */
-#define upper_16_bits(n) ((u16)((n) >> 16))
-
-/**
- * lower_16_bits - return bits 0-15 of a number
- * @n: the number we're accessing
- */
-#define lower_16_bits(n) ((u16)((n) & 0xffff))
-
struct completion;
struct user;
--- a/include/linux/wordpart.h
+++ b/include/linux/wordpart.h
@@ -2,6 +2,35 @@
#ifndef _LINUX_WORDPART_H
#define _LINUX_WORDPART_H
+
+/**
+ * upper_32_bits - return bits 32-63 of a number
+ * @n: the number we're accessing
+ *
+ * A basic shift-right of a 64- or 32-bit quantity. Use this to suppress
+ * the "right shift count >= width of type" warning when that quantity is
+ * 32-bits.
+ */
+#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
+
+/**
+ * lower_32_bits - return bits 0-31 of a number
+ * @n: the number we're accessing
+ */
+#define lower_32_bits(n) ((u32)((n) & 0xffffffff))
+
+/**
+ * upper_16_bits - return bits 16-31 of a number
+ * @n: the number we're accessing
+ */
+#define upper_16_bits(n) ((u16)((n) >> 16))
+
+/**
+ * lower_16_bits - return bits 0-15 of a number
+ * @n: the number we're accessing
+ */
+#define lower_16_bits(n) ((u16)((n) & 0xffff))
+
/**
* REPEAT_BYTE - repeat the value @x multiple times as an unsigned long value
* @x: value to repeat

36
target/linux/generic/backport-6.1/400-v6.9-mtd-rawnand-brcmnand-Support-write-protection-settin.patch
View File

@@ -1,36 +0,0 @@
From 8e7daa85641c9559c113f6b217bdc923397de77c Mon Sep 17 00:00:00 2001
From: William Zhang <william.zhang@broadcom.com>
Date: Thu, 22 Feb 2024 19:47:58 -0800
Subject: [PATCH] mtd: rawnand: brcmnand: Support write protection setting from
dts
The write protection feature is controlled by the module parameter wp_on
with default set to enabled. But not all the board use this feature
especially in BCMBCA broadband board. And module parameter is not
sufficient as different board can have different option. Add a device
tree property and allow this feature to be configured through the board
dts on per board basis.
Signed-off-by: William Zhang <william.zhang@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Kamal Dasu <kamal.dasu@broadcom.com>
Reviewed-by: David Regan <dregan@broadcom.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240223034758.13753-14-william.zhang@broadcom.com
---
drivers/mtd/nand/raw/brcmnand/brcmnand.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -3188,6 +3188,10 @@ int brcmnand_probe(struct platform_devic
/* Disable XOR addressing */
brcmnand_rmw_reg(ctrl, BRCMNAND_CS_XOR, 0xff, 0, 0);
+ /* Check if the board connects the WP pin */
+ if (of_property_read_bool(dn, "brcm,wp-not-connected"))
+ wp_on = 0;
+
if (ctrl->features & BRCMNAND_HAS_WP) {
/* Permanently disable write protection */
if (wp_on == 2)

65
target/linux/generic/backport-6.1/406-v6.2-0001-mtd-core-simplify-a-bit-code-find-partition-matching.patch
View File

@@ -1,65 +0,0 @@
From 63db0cb35e1cb3b3c134906d1062f65513fdda2d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Tue, 4 Oct 2022 10:37:09 +0200
Subject: [PATCH] mtd: core: simplify (a bit) code find partition-matching
dynamic OF node
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
1. Don't hardcode "partition-" string twice
2. Use simpler logic & use ->name to avoid of_property_read_string()
3. Use mtd_get_of_node() helper
Cc: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221004083710.27704-1-zajec5@gmail.com
---
drivers/mtd/mtdcore.c | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -551,18 +551,16 @@ static void mtd_check_of_node(struct mtd
struct device_node *partitions, *parent_dn, *mtd_dn = NULL;
const char *pname, *prefix = "partition-";
int plen, mtd_name_len, offset, prefix_len;
- struct mtd_info *parent;
bool found = false;
/* Check if MTD already has a device node */
- if (dev_of_node(&mtd->dev))
+ if (mtd_get_of_node(mtd))
return;
/* Check if a partitions node exist */
if (!mtd_is_partition(mtd))
return;
- parent = mtd->parent;
- parent_dn = of_node_get(dev_of_node(&parent->dev));
+ parent_dn = of_node_get(mtd_get_of_node(mtd->parent));
if (!parent_dn)
return;
@@ -575,15 +573,15 @@ static void mtd_check_of_node(struct mtd
/* Search if a partition is defined with the same name */
for_each_child_of_node(partitions, mtd_dn) {
- offset = 0;
-
/* Skip partition with no/wrong prefix */
- if (!of_node_name_prefix(mtd_dn, "partition-"))
+ if (!of_node_name_prefix(mtd_dn, prefix))
continue;
/* Label have priority. Check that first */
- if (of_property_read_string(mtd_dn, "label", &pname)) {
- of_property_read_string(mtd_dn, "name", &pname);
+ if (!of_property_read_string(mtd_dn, "label", &pname)) {
+ offset = 0;
+ } else {
+ pname = mtd_dn->name;
offset = prefix_len;
}

84
target/linux/generic/backport-6.1/406-v6.2-0002-mtd-core-try-to-find-OF-node-for-every-MTD-partition.patch
View File

@@ -1,84 +0,0 @@
From ddb8cefb7af288950447ca6eeeafb09977dab56f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Tue, 4 Oct 2022 10:37:10 +0200
Subject: [PATCH] mtd: core: try to find OF node for every MTD partition
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
So far this feature was limited to the top-level "nvmem-cells" node.
There are multiple parsers creating partitions and subpartitions
dynamically. Extend that code to handle them too.
This allows finding partition-* node for every MTD (sub)partition.
Random example:
partitions {
compatible = "brcm,bcm947xx-cfe-partitions";
partition-firmware {
compatible = "brcm,trx";
partition-loader {
};
};
};
Cc: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221004083710.27704-2-zajec5@gmail.com
---
drivers/mtd/mtdcore.c | 18 ++++++------------
1 file changed, 6 insertions(+), 12 deletions(-)
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -551,20 +551,22 @@ static void mtd_check_of_node(struct mtd
struct device_node *partitions, *parent_dn, *mtd_dn = NULL;
const char *pname, *prefix = "partition-";
int plen, mtd_name_len, offset, prefix_len;
- bool found = false;
/* Check if MTD already has a device node */
if (mtd_get_of_node(mtd))
return;
- /* Check if a partitions node exist */
if (!mtd_is_partition(mtd))
return;
+
parent_dn = of_node_get(mtd_get_of_node(mtd->parent));
if (!parent_dn)
return;
- partitions = of_get_child_by_name(parent_dn, "partitions");
+ if (mtd_is_partition(mtd->parent))
+ partitions = of_node_get(parent_dn);
+ else
+ partitions = of_get_child_by_name(parent_dn, "partitions");
if (!partitions)
goto exit_parent;
@@ -588,19 +590,11 @@ static void mtd_check_of_node(struct mtd
plen = strlen(pname) - offset;
if (plen == mtd_name_len &&
!strncmp(mtd->name, pname + offset, plen)) {
- found = true;
+ mtd_set_of_node(mtd, mtd_dn);
break;
}
}
- if (!found)
- goto exit_partitions;
-
- /* Set of_node only for nvmem */
- if (of_device_is_compatible(mtd_dn, "nvmem-cells"))
- mtd_set_of_node(mtd, mtd_dn);
-
-exit_partitions:
of_node_put(partitions);
exit_parent:
of_node_put(parent_dn);

47
target/linux/generic/backport-6.1/408-v6.2-mtd-core-set-ROOT_DEV-for-partitions-marked-as-rootf.patch
View File

@@ -1,47 +0,0 @@
From 26422ac78e9d8767bd4aabfbae616b15edbf6a1b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Sat, 22 Oct 2022 23:13:18 +0200
Subject: [PATCH] mtd: core: set ROOT_DEV for partitions marked as rootfs in DT
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This adds support for "linux,rootfs" binding that is used to mark flash
partition containing rootfs. It's useful for devices using device tree
that don't have bootloader passing root info in cmdline.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221022211318.32009-2-zajec5@gmail.com
---
drivers/mtd/mtdcore.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -28,6 +28,7 @@
#include <linux/leds.h>
#include <linux/debugfs.h>
#include <linux/nvmem-provider.h>
+#include <linux/root_dev.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
@@ -737,6 +738,17 @@ int add_mtd_device(struct mtd_info *mtd)
not->add(mtd);
mutex_unlock(&mtd_table_mutex);
+
+ if (of_find_property(mtd_get_of_node(mtd), "linux,rootfs", NULL)) {
+ if (IS_BUILTIN(CONFIG_MTD)) {
+ pr_info("mtd: setting mtd%d (%s) as root device\n", mtd->index, mtd->name);
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
+ } else {
+ pr_warn("mtd: can't set mtd%d (%s) as root device - mtd must be builtin\n",
+ mtd->index, mtd->name);
+ }
+ }
+
/* We _know_ we aren't being removed, because
our caller is still holding us here. So none
of this try_ nonsense, and no bitching about it

117
target/linux/generic/backport-6.1/410-v6.2-mtd-spi-nor-add-generic-flash-driver.patch
View File

@@ -1,117 +0,0 @@
From 773bbe10449731c9525457873e0c2342e5cf883b Mon Sep 17 00:00:00 2001
From: Michael Walle <michael@walle.cc>
Date: Thu, 11 Aug 2022 00:06:53 +0200
Subject: [PATCH] mtd: spi-nor: add generic flash driver
Our SFDP parsing is everything we need to support all basic operations
of a flash device. If the flash isn't found in our in-kernel flash
database, gracefully fall back to a driver described solely by its SFDP
tables.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Tested-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Link: https://lore.kernel.org/r/20220810220654.1297699-7-michael@walle.cc
---
drivers/mtd/spi-nor/core.c | 26 ++++++++++++++++++++++++--
drivers/mtd/spi-nor/core.h | 1 +
drivers/mtd/spi-nor/sfdp.c | 27 +++++++++++++++++++++++++++
3 files changed, 52 insertions(+), 2 deletions(-)
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -1636,6 +1636,16 @@ static const struct spi_nor_manufacturer
&spi_nor_xmc,
};
+static const struct flash_info spi_nor_generic_flash = {
+ .name = "spi-nor-generic",
+ /*
+ * JESD216 rev A doesn't specify the page size, therefore we need a
+ * sane default.
+ */
+ .page_size = 256,
+ .parse_sfdp = true,
+};
+
static const struct flash_info *spi_nor_match_id(struct spi_nor *nor,
const u8 *id)
{
@@ -1669,6 +1679,14 @@ static const struct flash_info *spi_nor_
}
info = spi_nor_match_id(nor, id);
+
+ /* Fallback to a generic flash described only by its SFDP data. */
+ if (!info) {
+ ret = spi_nor_check_sfdp_signature(nor);
+ if (!ret)
+ info = &spi_nor_generic_flash;
+ }
+
if (!info) {
dev_err(nor->dev, "unrecognized JEDEC id bytes: %*ph\n",
SPI_NOR_MAX_ID_LEN, id);
@@ -2105,8 +2123,12 @@ static int spi_nor_select_pp(struct spi_
* spi_nor_select_uniform_erase() - select optimum uniform erase type
* @map: the erase map of the SPI NOR
* @wanted_size: the erase type size to search for. Contains the value of
- * info->sector_size or of the "small sector" size in case
- * CONFIG_MTD_SPI_NOR_USE_4K_SECTORS is defined.
+ * info->sector_size, the "small sector" size in case
+ * CONFIG_MTD_SPI_NOR_USE_4K_SECTORS is defined or 0 if
+ * there is no information about the sector size. The
+ * latter is the case if the flash parameters are parsed
+ * solely by SFDP, then the largest supported erase type
+ * is selected.
*
* Once the optimum uniform sector erase command is found, disable all the
* other.
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -708,6 +708,8 @@ int spi_nor_controller_ops_read_reg(stru
int spi_nor_controller_ops_write_reg(struct spi_nor *nor, u8 opcode,
const u8 *buf, size_t len);
+int spi_nor_check_sfdp_signature(struct spi_nor *nor);
+
static inline struct spi_nor *mtd_to_spi_nor(struct mtd_info *mtd)
{
return container_of(mtd, struct spi_nor, mtd);
--- a/drivers/mtd/spi-nor/sfdp.c
+++ b/drivers/mtd/spi-nor/sfdp.c
@@ -1250,6 +1250,33 @@ static void spi_nor_post_sfdp_fixups(str
}
/**
+ * spi_nor_check_sfdp_signature() - check for a valid SFDP signature
+ * @nor: pointer to a 'struct spi_nor'
+ *
+ * Used to detect if the flash supports the RDSFDP command as well as the
+ * presence of a valid SFDP table.
+ *
+ * Return: 0 on success, -errno otherwise.
+ */
+int spi_nor_check_sfdp_signature(struct spi_nor *nor)
+{
+ u32 signature;
+ int err;
+
+ /* Get the SFDP header. */
+ err = spi_nor_read_sfdp_dma_unsafe(nor, 0, sizeof(signature),
+ &signature);
+ if (err < 0)
+ return err;
+
+ /* Check the SFDP signature. */
+ if (le32_to_cpu(signature) != SFDP_SIGNATURE)
+ return -EINVAL;
+
+ return 0;
+}
+
+/**
* spi_nor_parse_sfdp() - parse the Serial Flash Discoverable Parameters.
* @nor: pointer to a 'struct spi_nor'
*

32
target/linux/generic/backport-6.1/412-v6.3-02-spidev-Add-Silicon-Labs-SI3210-device-compatible.patch
View File

@@ -1,32 +0,0 @@
From 6c9d1fd52956c3148e847a214bae9102b1811de5 Mon Sep 17 00:00:00 2001
From: Vincent Tremblay <vincent@vtremblay.dev>
Date: Tue, 27 Dec 2022 09:10:08 -0500
Subject: [PATCH] spidev: Add Silicon Labs SI3210 device compatible
Add compatible string for Silicon Labs SI3210 device.
Signed-off-by: Vincent Tremblay <vincent@vtremblay.dev>
Link: https://lore.kernel.org/r/20221227141011.111410-2-vincent@vtremblay.dev
Signed-off-by: Mark Brown <broonie@kernel.org>
---
drivers/spi/spidev.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -702,6 +702,7 @@ static const struct spi_device_id spidev
{ .name = "spi-petra" },
{ .name = "spi-authenta" },
{ .name = "em3581" },
+ { .name = "si3210" },
{},
};
MODULE_DEVICE_TABLE(spi, spidev_spi_ids);
@@ -730,6 +731,7 @@ static const struct of_device_id spidev_
{ .compatible = "rohm,dh2228fv", .data = &spidev_of_check },
{ .compatible = "semtech,sx1301", .data = &spidev_of_check },
{ .compatible = "silabs,em3581", .data = &spidev_of_check },
+ { .compatible = "silabs,si3210", .data = &spidev_of_check },
{},
};
MODULE_DEVICE_TABLE(of, spidev_dt_ids);

229
target/linux/generic/backport-6.1/421-v6.2-mtd-parsers-add-TP-Link-SafeLoader-partitions-table-.patch
View File

@@ -1,229 +0,0 @@
From aec4d5f5ffd0f0092bd9dc21ea90e0bc237d4b74 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Sat, 15 Oct 2022 11:29:50 +0200
Subject: [PATCH] mtd: parsers: add TP-Link SafeLoader partitions table parser
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This parser deals with most TP-Link home routers. It reads info about
partitions and registers them in the MTD subsystem.
Example from TP-Link Archer C5 V2:
spi-nor spi0.0: s25fl128s1 (16384 Kbytes)
15 tplink-safeloader partitions found on MTD device spi0.0
Creating 15 MTD partitions on "spi0.0":
0x000000000000-0x000000040000 : "fs-uboot"
0x000000040000-0x000000440000 : "os-image"
0x000000440000-0x000000e40000 : "rootfs"
0x000000e40000-0x000000e40200 : "default-mac"
0x000000e40200-0x000000e40400 : "pin"
0x000000e40400-0x000000e40600 : "product-info"
0x000000e50000-0x000000e60000 : "partition-table"
0x000000e60000-0x000000e60200 : "soft-version"
0x000000e61000-0x000000e70000 : "support-list"
0x000000e70000-0x000000e80000 : "profile"
0x000000e80000-0x000000e90000 : "default-config"
0x000000e90000-0x000000ee0000 : "user-config"
0x000000ee0000-0x000000fe0000 : "log"
0x000000fe0000-0x000000ff0000 : "radio_bk"
0x000000ff0000-0x000001000000 : "radio"
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221015092950.27467-2-zajec5@gmail.com
---
drivers/mtd/parsers/Kconfig | 15 +++
drivers/mtd/parsers/Makefile | 1 +
drivers/mtd/parsers/tplink_safeloader.c | 150 ++++++++++++++++++++++++
3 files changed, 166 insertions(+)
create mode 100644 drivers/mtd/parsers/tplink_safeloader.c
--- a/drivers/mtd/parsers/Kconfig
+++ b/drivers/mtd/parsers/Kconfig
@@ -123,6 +123,21 @@ config MTD_AFS_PARTS
for your particular device. It won't happen automatically. The
'physmap' map driver (CONFIG_MTD_PHYSMAP) does this, for example.
+config MTD_PARSER_TPLINK_SAFELOADER
+ tristate "TP-Link Safeloader partitions parser"
+ depends on MTD && (ARCH_BCM_5301X || ATH79 || SOC_MT7620 || SOC_MT7621 || COMPILE_TEST)
+ help
+ TP-Link home routers use flash partitions to store various data. Info
+ about flash space layout is stored in a partitions table using a
+ custom ASCII-based format.
+
+ That format was first found in devices with SafeLoader bootloader and
+ was named after it. Later it was adapted to CFE and U-Boot
+ bootloaders.
+
+ This driver reads partitions table, parses it and creates MTD
+ partitions.
+
config MTD_PARSER_TRX
tristate "Parser for TRX format partitions"
depends on MTD && (BCM47XX || ARCH_BCM_5301X || ARCH_MEDIATEK || RALINK || COMPILE_TEST)
--- a/drivers/mtd/parsers/Makefile
+++ b/drivers/mtd/parsers/Makefile
@@ -10,6 +10,7 @@ ofpart-$(CONFIG_MTD_OF_PARTS_BCM4908) +=
ofpart-$(CONFIG_MTD_OF_PARTS_LINKSYS_NS)+= ofpart_linksys_ns.o
obj-$(CONFIG_MTD_PARSER_IMAGETAG) += parser_imagetag.o
obj-$(CONFIG_MTD_AFS_PARTS) += afs.o
+obj-$(CONFIG_MTD_PARSER_TPLINK_SAFELOADER) += tplink_safeloader.o
obj-$(CONFIG_MTD_PARSER_TRX) += parser_trx.o
obj-$(CONFIG_MTD_SERCOMM_PARTS) += scpart.o
obj-$(CONFIG_MTD_SHARPSL_PARTS) += sharpslpart.o
--- /dev/null
+++ b/drivers/mtd/parsers/tplink_safeloader.c
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright © 2022 Rafał Miłecki <rafal@milecki.pl>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+
+#define TPLINK_SAFELOADER_DATA_OFFSET 4
+#define TPLINK_SAFELOADER_MAX_PARTS 32
+
+struct safeloader_cmn_header {
+ __be32 size;
+ uint32_t unused;
+} __packed;
+
+static void *mtd_parser_tplink_safeloader_read_table(struct mtd_info *mtd)
+{
+ struct safeloader_cmn_header hdr;
+ struct device_node *np;
+ size_t bytes_read;
+ size_t offset;
+ size_t size;
+ char *buf;
+ int err;
+
+ np = mtd_get_of_node(mtd);
+ if (mtd_is_partition(mtd))
+ of_node_get(np);
+ else
+ np = of_get_child_by_name(np, "partitions");
+
+ if (of_property_read_u32(np, "partitions-table-offset", (u32 *)&offset)) {
+ pr_err("Failed to get partitions table offset\n");
+ goto err_put;
+ }
+
+ err = mtd_read(mtd, offset, sizeof(hdr), &bytes_read, (uint8_t *)&hdr);
+ if (err && !mtd_is_bitflip(err)) {
+ pr_err("Failed to read from %s at 0x%zx\n", mtd->name, offset);
+ goto err_put;
+ }
+
+ size = be32_to_cpu(hdr.size);
+
+ buf = kmalloc(size + 1, GFP_KERNEL);
+ if (!buf)
+ goto err_put;
+
+ err = mtd_read(mtd, offset + sizeof(hdr), size, &bytes_read, buf);
+ if (err && !mtd_is_bitflip(err)) {
+ pr_err("Failed to read from %s at 0x%zx\n", mtd->name, offset + sizeof(hdr));
+ goto err_kfree;
+ }
+
+ buf[size] = '\0';
+
+ of_node_put(np);
+
+ return buf;
+
+err_kfree:
+ kfree(buf);
+err_put:
+ of_node_put(np);
+ return NULL;
+}
+
+static int mtd_parser_tplink_safeloader_parse(struct mtd_info *mtd,
+ const struct mtd_partition **pparts,
+ struct mtd_part_parser_data *data)
+{
+ struct mtd_partition *parts;
+ char name[65];
+ size_t offset;
+ size_t bytes;
+ char *buf;
+ int idx;
+ int err;
+
+ parts = kcalloc(TPLINK_SAFELOADER_MAX_PARTS, sizeof(*parts), GFP_KERNEL);
+ if (!parts) {
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ buf = mtd_parser_tplink_safeloader_read_table(mtd);
+ if (!buf) {
+ err = -ENOENT;
+ goto err_out;
+ }
+
+ for (idx = 0, offset = TPLINK_SAFELOADER_DATA_OFFSET;
+ idx < TPLINK_SAFELOADER_MAX_PARTS &&
+ sscanf(buf + offset, "partition %64s base 0x%llx size 0x%llx%zn\n",
+ name, &parts[idx].offset, &parts[idx].size, &bytes) == 3;
+ idx++, offset += bytes + 1) {
+ parts[idx].name = kstrdup(name, GFP_KERNEL);
+ if (!parts[idx].name) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+ }
+
+ if (idx == TPLINK_SAFELOADER_MAX_PARTS)
+ pr_warn("Reached maximum number of partitions!\n");
+
+ kfree(buf);
+
+ *pparts = parts;
+
+ return idx;
+
+err_free:
+ for (idx -= 1; idx >= 0; idx--)
+ kfree(parts[idx].name);
+err_out:
+ return err;
+};
+
+static void mtd_parser_tplink_safeloader_cleanup(const struct mtd_partition *pparts,
+ int nr_parts)
+{
+ int i;
+
+ for (i = 0; i < nr_parts; i++)
+ kfree(pparts[i].name);
+
+ kfree(pparts);
+}
+
+static const struct of_device_id mtd_parser_tplink_safeloader_of_match_table[] = {
+ { .compatible = "tplink,safeloader-partitions" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, mtd_parser_tplink_safeloader_of_match_table);
+
+static struct mtd_part_parser mtd_parser_tplink_safeloader = {
+ .parse_fn = mtd_parser_tplink_safeloader_parse,
+ .cleanup = mtd_parser_tplink_safeloader_cleanup,
+ .name = "tplink-safeloader",
+ .of_match_table = mtd_parser_tplink_safeloader_of_match_table,
+};
+module_mtd_part_parser(mtd_parser_tplink_safeloader);
+
+MODULE_LICENSE("GPL");

35
target/linux/generic/backport-6.1/423-v6.3-mtd-spinand-macronix-use-scratch-buffer-for-DMA-oper.patch
View File

@@ -1,35 +0,0 @@
From ebed787a0becb9354f0a23620a5130cccd6c730c Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Thu, 19 Jan 2023 03:45:43 +0000
Subject: [PATCH] mtd: spinand: macronix: use scratch buffer for DMA operation
The mx35lf1ge4ab_get_eccsr() function uses an SPI DMA operation to
read the eccsr, hence the buffer should not be on stack. Since commit
380583227c0c7f ("spi: spi-mem: Add extra sanity checks on the op param")
the kernel emmits a warning and blocks such operations.
Use the scratch buffer to get eccsr instead of trying to directly read
into a stack-allocated variable.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/Y8i85zM0u4XdM46z@makrotopia.org
---
drivers/mtd/nand/spi/macronix.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/mtd/nand/spi/macronix.c
+++ b/drivers/mtd/nand/spi/macronix.c
@@ -83,9 +83,10 @@ static int mx35lf1ge4ab_ecc_get_status(s
* in order to avoid forcing the wear-leveling layer to move
* data around if it's not necessary.
*/
- if (mx35lf1ge4ab_get_eccsr(spinand, &eccsr))
+ if (mx35lf1ge4ab_get_eccsr(spinand, spinand->scratchbuf))
return nanddev_get_ecc_conf(nand)->strength;
+ eccsr = *spinand->scratchbuf;
if (WARN_ON(eccsr > nanddev_get_ecc_conf(nand)->strength ||
!eccsr))
return nanddev_get_ecc_conf(nand)->strength;

33
target/linux/generic/backport-6.1/424-v6.3-mtd-ubi-wire-up-parent-MTD-device.patch
View File

@@ -1,33 +0,0 @@
From 1ecf9e390452e73a362ea7fbde8f3f0db83de856 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Thu, 22 Dec 2022 19:33:04 +0000
Subject: [PATCH] mtd: ubi: wire-up parent MTD device
Wire up the device parent pointer of UBI devices to their lower MTD
device, typically an MTD partition or whole-chip device.
The most noticeable change is that in sysfs, previously ubi devices
would be could in /sys/devices/virtual/ubi while after this change they
would be correctly attached to their parent MTD device, e.g.
/sys/devices/platform/1100d000.spi/spi_master/spi1/spi1.0/mtd/mtd2/ubi0.
Locating UBI devices using /sys/class/ubi/ of course still works as
well.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
---
drivers/mtd/ubi/build.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -929,6 +929,7 @@ int ubi_attach_mtd_dev(struct mtd_info *
ubi->dev.release = dev_release;
ubi->dev.class = &ubi_class;
ubi->dev.groups = ubi_dev_groups;
+ ubi->dev.parent = &mtd->dev;
ubi->mtd = mtd;
ubi->ubi_num = ubi_num;

49
target/linux/generic/backport-6.1/425-v6.3-mtd-ubi-block-wire-up-device-parent.patch
View File

@@ -1,49 +0,0 @@
From 05b8773ca33253ea562be145cf3145b05ef19f86 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Thu, 22 Dec 2022 19:33:31 +0000
Subject: [PATCH] mtd: ubi: block: wire-up device parent
ubiblock devices were previously only identifyable by their name, but
not connected to their parent UBI volume device e.g. in sysfs.
Properly parent ubiblock device as descendant of a UBI volume device
to reflect device model hierachy.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
---
drivers/mtd/ubi/block.c | 2 +-
drivers/mtd/ubi/kapi.c | 1 +
include/linux/mtd/ubi.h | 1 +
3 files changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/mtd/ubi/block.c
+++ b/drivers/mtd/ubi/block.c
@@ -452,7 +452,7 @@ int ubiblock_create(struct ubi_volume_in
list_add_tail(&dev->list, &ubiblock_devices);
/* Must be the last step: anyone can call file ops from now on */
- ret = add_disk(dev->gd);
+ ret = device_add_disk(vi->dev, dev->gd, NULL);
if (ret)
goto out_destroy_wq;
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -79,6 +79,7 @@ void ubi_do_get_volume_info(struct ubi_d
vi->name_len = vol->name_len;
vi->name = vol->name;
vi->cdev = vol->cdev.dev;
+ vi->dev = &vol->dev;
}
/**
--- a/include/linux/mtd/ubi.h
+++ b/include/linux/mtd/ubi.h
@@ -110,6 +110,7 @@ struct ubi_volume_info {
int name_len;
const char *name;
dev_t cdev;
+ struct device *dev;
};
/**

47
target/linux/generic/backport-6.1/426-v6.4-0004-mtd-core-prepare-mtd_otp_nvmem_add-to-handle-EPROBE_.patch
View File

@@ -1,47 +0,0 @@
From 281f7a6c1a33fffcde32001bacbb4f672140fbf9 Mon Sep 17 00:00:00 2001
From: Michael Walle <michael@walle.cc>
Date: Wed, 8 Mar 2023 09:20:21 +0100
Subject: [PATCH] mtd: core: prepare mtd_otp_nvmem_add() to handle
-EPROBE_DEFER
NVMEM soon will get the ability for nvmem layouts and these might
not be ready when nvmem_register() is called and thus it might
return -EPROBE_DEFER. Don't print the error message in this case.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230308082021.870459-4-michael@walle.cc
---
drivers/mtd/mtdcore.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -955,8 +955,8 @@ static int mtd_otp_nvmem_add(struct mtd_
nvmem = mtd_otp_nvmem_register(mtd, "user-otp", size,
mtd_nvmem_user_otp_reg_read);
if (IS_ERR(nvmem)) {
- dev_err(dev, "Failed to register OTP NVMEM device\n");
- return PTR_ERR(nvmem);
+ err = PTR_ERR(nvmem);
+ goto err;
}
mtd->otp_user_nvmem = nvmem;
}
@@ -973,7 +973,6 @@ static int mtd_otp_nvmem_add(struct mtd_
nvmem = mtd_otp_nvmem_register(mtd, "factory-otp", size,
mtd_nvmem_fact_otp_reg_read);
if (IS_ERR(nvmem)) {
- dev_err(dev, "Failed to register OTP NVMEM device\n");
err = PTR_ERR(nvmem);
goto err;
}
@@ -985,7 +984,7 @@ static int mtd_otp_nvmem_add(struct mtd_
err:
nvmem_unregister(mtd->otp_user_nvmem);
- return err;
+ return dev_err_probe(dev, err, "Failed to register OTP NVMEM device\n");
}
/**

107
target/linux/generic/backport-6.1/600-v6.9-01-net-gro-parse-ipv6-ext-headers-without-frag0-invalid.patch
View File

@@ -1,107 +0,0 @@
From: Richard Gobert <richardbgobert@gmail.com>
Date: Wed, 3 Jan 2024 15:44:21 +0100
Subject: [PATCH] net: gro: parse ipv6 ext headers without frag0 invalidation
The existing code always pulls the IPv6 header and sets the transport
offset initially. Then optionally again pulls any extension headers in
ipv6_gso_pull_exthdrs and sets the transport offset again on return from
that call. skb->data is set at the start of the first extension header
before calling ipv6_gso_pull_exthdrs, and must disable the frag0
optimization because that function uses pskb_may_pull/pskb_pull instead of
skb_gro_ helpers. It sets the GRO offset to the TCP header with
skb_gro_pull and sets the transport header. Then returns skb->data to its
position before this block.
This commit introduces a new helper function - ipv6_gro_pull_exthdrs -
which is used in ipv6_gro_receive to pull ipv6 ext headers instead of
ipv6_gso_pull_exthdrs. Thus, there is no modification of skb->data, all
operations use skb_gro_* helpers, and the frag0 fast path can be taken for
IPv6 packets with ext headers.
Signed-off-by: Richard Gobert <richardbgobert@gmail.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/504130f6-b56c-4dcc-882c-97942c59f5b7@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -36,6 +36,40 @@
INDIRECT_CALL_L4(cb, f2, f1, head, skb); \
})
+static int ipv6_gro_pull_exthdrs(struct sk_buff *skb, int off, int proto)
+{
+ const struct net_offload *ops = NULL;
+ struct ipv6_opt_hdr *opth;
+
+ for (;;) {
+ int len;
+
+ ops = rcu_dereference(inet6_offloads[proto]);
+
+ if (unlikely(!ops))
+ break;
+
+ if (!(ops->flags & INET6_PROTO_GSO_EXTHDR))
+ break;
+
+ opth = skb_gro_header(skb, off + sizeof(*opth), off);
+ if (unlikely(!opth))
+ break;
+
+ len = ipv6_optlen(opth);
+
+ opth = skb_gro_header(skb, off + len, off);
+ if (unlikely(!opth))
+ break;
+ proto = opth->nexthdr;
+
+ off += len;
+ }
+
+ skb_gro_pull(skb, off - skb_network_offset(skb));
+ return proto;
+}
+
static int ipv6_gso_pull_exthdrs(struct sk_buff *skb, int proto)
{
const struct net_offload *ops = NULL;
@@ -224,28 +258,25 @@ INDIRECT_CALLABLE_SCOPE struct sk_buff *
goto out;
skb_set_network_header(skb, off);
- skb_gro_pull(skb, sizeof(*iph));
- skb_set_transport_header(skb, skb_gro_offset(skb));
- flush += ntohs(iph->payload_len) != skb_gro_len(skb);
+ flush += ntohs(iph->payload_len) != skb->len - hlen;
proto = iph->nexthdr;
ops = rcu_dereference(inet6_offloads[proto]);
if (!ops || !ops->callbacks.gro_receive) {
- pskb_pull(skb, skb_gro_offset(skb));
- skb_gro_frag0_invalidate(skb);
- proto = ipv6_gso_pull_exthdrs(skb, proto);
- skb_gro_pull(skb, -skb_transport_offset(skb));
- skb_reset_transport_header(skb);
- __skb_push(skb, skb_gro_offset(skb));
+ proto = ipv6_gro_pull_exthdrs(skb, hlen, proto);
ops = rcu_dereference(inet6_offloads[proto]);
if (!ops || !ops->callbacks.gro_receive)
goto out;
- iph = ipv6_hdr(skb);
+ iph = skb_gro_network_header(skb);
+ } else {
+ skb_gro_pull(skb, sizeof(*iph));
}
+ skb_set_transport_header(skb, skb_gro_offset(skb));
+
NAPI_GRO_CB(skb)->proto = proto;
flush--;

41
target/linux/generic/backport-6.1/611-v6.3-net-add-helper-eth_addr_add.patch
View File

@@ -1,41 +0,0 @@
From 7390609b0121a1b982c5ecdfcd72dc328e5784ee Mon Sep 17 00:00:00 2001
From: Michael Walle <michael@walle.cc>
Date: Mon, 6 Feb 2023 13:43:42 +0000
Subject: [PATCH] net: add helper eth_addr_add()
Add a helper to add an offset to a ethernet address. This comes in handy
if you have a base ethernet address for multiple interfaces.
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230206134356.839737-9-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/etherdevice.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -508,6 +508,20 @@ static inline void eth_addr_inc(u8 *addr
}
/**
+ * eth_addr_add() - Add (or subtract) an offset to/from the given MAC address.
+ *
+ * @offset: Offset to add.
+ * @addr: Pointer to a six-byte array containing Ethernet address to increment.
+ */
+static inline void eth_addr_add(u8 *addr, long offset)
+{
+ u64 u = ether_addr_to_u64(addr);
+
+ u += offset;
+ u64_to_ether_addr(u, addr);
+}
+
+/**
* is_etherdev_addr - Tell if given Ethernet address belongs to the device.
* @dev: Pointer to a device structure
* @addr: Pointer to a six-byte array containing the Ethernet address

79
target/linux/generic/backport-6.1/621-v6.2-01-net-wwan-t7xx-use-union-to-group-port-type-specific-data.patch
View File

@@ -1,79 +0,0 @@
From fece7a8c65d1476b901b969a07b2979e1b459e66 Mon Sep 17 00:00:00 2001
From: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Date: Fri, 28 Oct 2022 21:04:50 +0530
Subject: [PATCH] net: wwan: t7xx: use union to group port type specific data
Use union inside t7xx_port to group port type specific data members.
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/wwan/t7xx/t7xx_port.h | 6 +++++-
drivers/net/wwan/t7xx/t7xx_port_wwan.c | 16 ++++++++--------
2 files changed, 13 insertions(+), 9 deletions(-)
--- a/drivers/net/wwan/t7xx/t7xx_port.h
+++ b/drivers/net/wwan/t7xx/t7xx_port.h
@@ -99,7 +99,6 @@ struct t7xx_port_conf {
struct t7xx_port {
/* Members not initialized in definition */
const struct t7xx_port_conf *port_conf;
- struct wwan_port *wwan_port;
struct t7xx_pci_dev *t7xx_dev;
struct device *dev;
u16 seq_nums[2]; /* TX/RX sequence numbers */
@@ -122,6 +121,11 @@ struct t7xx_port {
int rx_length_th;
bool chan_enable;
struct task_struct *thread;
+ union {
+ struct {
+ struct wwan_port *wwan_port;
+ } wwan;
+ };
};
struct sk_buff *t7xx_port_alloc_skb(int payload);
--- a/drivers/net/wwan/t7xx/t7xx_port_wwan.c
+++ b/drivers/net/wwan/t7xx/t7xx_port_wwan.c
@@ -109,12 +109,12 @@ static int t7xx_port_wwan_init(struct t7
static void t7xx_port_wwan_uninit(struct t7xx_port *port)
{
- if (!port->wwan_port)
+ if (!port->wwan.wwan_port)
return;
port->rx_length_th = 0;
- wwan_remove_port(port->wwan_port);
- port->wwan_port = NULL;
+ wwan_remove_port(port->wwan.wwan_port);
+ port->wwan.wwan_port = NULL;
}
static int t7xx_port_wwan_recv_skb(struct t7xx_port *port, struct sk_buff *skb)
@@ -129,7 +129,7 @@ static int t7xx_port_wwan_recv_skb(struc
return 0;
}
- wwan_port_rx(port->wwan_port, skb);
+ wwan_port_rx(port->wwan.wwan_port, skb);
return 0;
}
@@ -158,10 +158,10 @@ static void t7xx_port_wwan_md_state_noti
if (state != MD_STATE_READY)
return;
- if (!port->wwan_port) {
- port->wwan_port = wwan_create_port(port->dev, port_conf->port_type,
- &wwan_ops, port);
- if (IS_ERR(port->wwan_port))
+ if (!port->wwan.wwan_port) {
+ port->wwan.wwan_port = wwan_create_port(port->dev, port_conf->port_type,
+ &wwan_ops, port);
+ if (IS_ERR(port->wwan.wwan_port))
dev_err(port->dev, "Unable to create WWWAN port %s", port_conf->name);
}
}

237
target/linux/generic/backport-6.1/621-v6.2-02-net-wwan-t7xx-Add-port-for-modem-logging.patch
View File

@@ -1,237 +0,0 @@
From 3349e4a48acb0923fa98d2beac82a833a76116cb Mon Sep 17 00:00:00 2001
From: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Date: Fri, 28 Oct 2022 21:05:34 +0530
Subject: [PATCH] net: wwan: t7xx: Add port for modem logging
The Modem Logging (MDL) port provides an interface to collect modem
logs for debugging purposes. MDL is supported by the relay interface,
and the mtk_t7xx port infrastructure. MDL allows user-space apps to
control logging via mbim command and to collect logs via the relay
interface, while port infrastructure facilitates communication between
the driver and the modem.
Signed-off-by: Moises Veleta <moises.veleta@linux.intel.com>
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: Devegowda Chandrashekar <chandrashekar.devegowda@intel.com>
Acked-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/wwan/Kconfig | 1 +
drivers/net/wwan/t7xx/Makefile | 3 +
drivers/net/wwan/t7xx/t7xx_hif_cldma.c | 2 +
drivers/net/wwan/t7xx/t7xx_pci.h | 3 +
drivers/net/wwan/t7xx/t7xx_port.h | 3 +
drivers/net/wwan/t7xx/t7xx_port_proxy.c | 12 +++
drivers/net/wwan/t7xx/t7xx_port_proxy.h | 4 +
drivers/net/wwan/t7xx/t7xx_port_trace.c | 116 ++++++++++++++++++++++++
8 files changed, 144 insertions(+)
create mode 100644 drivers/net/wwan/t7xx/t7xx_port_trace.c
--- a/drivers/net/wwan/Kconfig
+++ b/drivers/net/wwan/Kconfig
@@ -108,6 +108,7 @@ config IOSM
config MTK_T7XX
tristate "MediaTek PCIe 5G WWAN modem T7xx device"
depends on PCI
+ select RELAY if WWAN_DEBUGFS
help
Enables MediaTek PCIe based 5G WWAN modem (T7xx series) device.
Adapts WWAN framework and provides network interface like wwan0
--- a/drivers/net/wwan/t7xx/Makefile
+++ b/drivers/net/wwan/t7xx/Makefile
@@ -16,3 +16,6 @@ mtk_t7xx-y:= t7xx_pci.o \
t7xx_hif_dpmaif_rx.o \
t7xx_dpmaif.o \
t7xx_netdev.o
+
+mtk_t7xx-$(CONFIG_WWAN_DEBUGFS) += \
+ t7xx_port_trace.o \
--- a/drivers/net/wwan/t7xx/t7xx_hif_cldma.c
+++ b/drivers/net/wwan/t7xx/t7xx_hif_cldma.c
@@ -1019,6 +1019,8 @@ static int t7xx_cldma_late_init(struct c
dev_err(md_ctrl->dev, "control TX ring init fail\n");
goto err_free_tx_ring;
}
+
+ md_ctrl->tx_ring[i].pkt_size = CLDMA_MTU;
}
for (j = 0; j < CLDMA_RXQ_NUM; j++) {
--- a/drivers/net/wwan/t7xx/t7xx_pci.h
+++ b/drivers/net/wwan/t7xx/t7xx_pci.h
@@ -79,6 +79,9 @@ struct t7xx_pci_dev {
spinlock_t md_pm_lock; /* Protects PCI resource lock */
unsigned int sleep_disable_count;
struct completion sleep_lock_acquire;
+#ifdef CONFIG_WWAN_DEBUGFS
+ struct dentry *debugfs_dir;
+#endif
};
enum t7xx_pm_id {
--- a/drivers/net/wwan/t7xx/t7xx_port.h
+++ b/drivers/net/wwan/t7xx/t7xx_port.h
@@ -125,6 +125,9 @@ struct t7xx_port {
struct {
struct wwan_port *wwan_port;
} wwan;
+ struct {
+ struct rchan *relaych;
+ } log;
};
};
--- a/drivers/net/wwan/t7xx/t7xx_port_proxy.c
+++ b/drivers/net/wwan/t7xx/t7xx_port_proxy.c
@@ -70,6 +70,18 @@ static const struct t7xx_port_conf t7xx_
.name = "MBIM",
.port_type = WWAN_PORT_MBIM,
}, {
+#ifdef CONFIG_WWAN_DEBUGFS
+ .tx_ch = PORT_CH_MD_LOG_TX,
+ .rx_ch = PORT_CH_MD_LOG_RX,
+ .txq_index = 7,
+ .rxq_index = 7,
+ .txq_exp_index = 7,
+ .rxq_exp_index = 7,
+ .path_id = CLDMA_ID_MD,
+ .ops = &t7xx_trace_port_ops,
+ .name = "mdlog",
+ }, {
+#endif
.tx_ch = PORT_CH_CONTROL_TX,
.rx_ch = PORT_CH_CONTROL_RX,
.txq_index = Q_IDX_CTRL,
--- a/drivers/net/wwan/t7xx/t7xx_port_proxy.h
+++ b/drivers/net/wwan/t7xx/t7xx_port_proxy.h
@@ -87,6 +87,10 @@ struct ctrl_msg_header {
extern struct port_ops wwan_sub_port_ops;
extern struct port_ops ctl_port_ops;
+#ifdef CONFIG_WWAN_DEBUGFS
+extern struct port_ops t7xx_trace_port_ops;
+#endif
+
void t7xx_port_proxy_reset(struct port_proxy *port_prox);
void t7xx_port_proxy_uninit(struct port_proxy *port_prox);
int t7xx_port_proxy_init(struct t7xx_modem *md);
--- /dev/null
+++ b/drivers/net/wwan/t7xx/t7xx_port_trace.c
@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2022 Intel Corporation.
+ */
+
+#include <linux/debugfs.h>
+#include <linux/relay.h>
+#include <linux/skbuff.h>
+#include <linux/wwan.h>
+
+#include "t7xx_port.h"
+#include "t7xx_port_proxy.h"
+#include "t7xx_state_monitor.h"
+
+#define T7XX_TRC_SUB_BUFF_SIZE 131072
+#define T7XX_TRC_N_SUB_BUFF 32
+
+static struct dentry *t7xx_trace_create_buf_file_handler(const char *filename,
+ struct dentry *parent,
+ umode_t mode,
+ struct rchan_buf *buf,
+ int *is_global)
+{
+ *is_global = 1;
+ return debugfs_create_file(filename, mode, parent, buf,
+ &relay_file_operations);
+}
+
+static int t7xx_trace_remove_buf_file_handler(struct dentry *dentry)
+{
+ debugfs_remove(dentry);
+ return 0;
+}
+
+static int t7xx_trace_subbuf_start_handler(struct rchan_buf *buf, void *subbuf,
+ void *prev_subbuf, size_t prev_padding)
+{
+ if (relay_buf_full(buf)) {
+ pr_err_ratelimited("Relay_buf full dropping traces");
+ return 0;
+ }
+
+ return 1;
+}
+
+static struct rchan_callbacks relay_callbacks = {
+ .subbuf_start = t7xx_trace_subbuf_start_handler,
+ .create_buf_file = t7xx_trace_create_buf_file_handler,
+ .remove_buf_file = t7xx_trace_remove_buf_file_handler,
+};
+
+static void t7xx_trace_port_uninit(struct t7xx_port *port)
+{
+ struct dentry *debugfs_dir = port->t7xx_dev->debugfs_dir;
+ struct rchan *relaych = port->log.relaych;
+
+ if (!relaych)
+ return;
+
+ relay_close(relaych);
+ debugfs_remove_recursive(debugfs_dir);
+}
+
+static int t7xx_trace_port_recv_skb(struct t7xx_port *port, struct sk_buff *skb)
+{
+ struct rchan *relaych = port->log.relaych;
+
+ if (!relaych)
+ return -EINVAL;
+
+ relay_write(relaych, skb->data, skb->len);
+ dev_kfree_skb(skb);
+ return 0;
+}
+
+static void t7xx_port_trace_md_state_notify(struct t7xx_port *port, unsigned int state)
+{
+ struct rchan *relaych = port->log.relaych;
+ struct dentry *debugfs_wwan_dir;
+ struct dentry *debugfs_dir;
+
+ if (state != MD_STATE_READY || relaych)
+ return;
+
+ debugfs_wwan_dir = wwan_get_debugfs_dir(port->dev);
+ if (IS_ERR(debugfs_wwan_dir))
+ return;
+
+ debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, debugfs_wwan_dir);
+ if (IS_ERR_OR_NULL(debugfs_dir)) {
+ wwan_put_debugfs_dir(debugfs_wwan_dir);
+ dev_err(port->dev, "Unable to create debugfs for trace");
+ return;
+ }
+
+ relaych = relay_open("relay_ch", debugfs_dir, T7XX_TRC_SUB_BUFF_SIZE,
+ T7XX_TRC_N_SUB_BUFF, &relay_callbacks, NULL);
+ if (!relaych)
+ goto err_rm_debugfs_dir;
+
+ wwan_put_debugfs_dir(debugfs_wwan_dir);
+ port->log.relaych = relaych;
+ port->t7xx_dev->debugfs_dir = debugfs_dir;
+ return;
+
+err_rm_debugfs_dir:
+ debugfs_remove_recursive(debugfs_dir);
+ wwan_put_debugfs_dir(debugfs_wwan_dir);
+ dev_err(port->dev, "Unable to create trace port %s", port->port_conf->name);
+}
+
+struct port_ops t7xx_trace_port_ops = {
+ .recv_skb = t7xx_trace_port_recv_skb,
+ .uninit = t7xx_trace_port_uninit,
+ .md_state_notify = t7xx_port_trace_md_state_notify,
+};

31
target/linux/generic/backport-6.1/621-v6.2-03-net-wwan-t7xx-Use-needed_headroom-instead-of.patch
View File

@@ -1,31 +0,0 @@
From c053d7b6bdcb45780036b32be6a950f71a78bf52 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>
Date: Thu, 3 Nov 2022 14:48:28 +0530
Subject: [PATCH] net: wwan: t7xx: Use needed_headroom instead of
hard_header_len
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
hard_header_len is used by gro_list_prepare() but on Rx, there
is no header so use needed_headroom instead.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sreehari Kancharla <sreehari.kancharla@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/wwan/t7xx/t7xx_netdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/wwan/t7xx/t7xx_netdev.c
+++ b/drivers/net/wwan/t7xx/t7xx_netdev.c
@@ -161,7 +161,7 @@ static void t7xx_ccmni_post_stop(struct
static void t7xx_ccmni_wwan_setup(struct net_device *dev)
{
- dev->hard_header_len += sizeof(struct ccci_header);
+ dev->needed_headroom += sizeof(struct ccci_header);
dev->mtu = ETH_DATA_LEN;
dev->max_mtu = CCMNI_MTU_MAX;

652
target/linux/generic/backport-6.1/621-v6.2-04-net-wwan-t7xx-Add-NAPI-support.patch
View File

@@ -1,652 +0,0 @@
From 5545b7b9f294de7f95ec6a7cb1de0db52296001c Mon Sep 17 00:00:00 2001
From: Haijun Liu <haijun.liu@mediatek.com>
Date: Thu, 3 Nov 2022 14:48:29 +0530
Subject: [PATCH] net: wwan: t7xx: Add NAPI support
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Replace the work queue based RX flow with a NAPI implementation
Remove rx_thread and dpmaif_rxq_work.
Enable GRO on RX path.
Introduce dummy network device. its responsibility is
- Binds one NAPI object for each DL HW queue and acts as
the agent of all those network devices.
- Use NAPI object to poll DL packets.
- Helps to dispatch each packet to the network interface.
Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Co-developed-by: Sreehari Kancharla <sreehari.kancharla@linux.intel.com>
Signed-off-by: Sreehari Kancharla <sreehari.kancharla@linux.intel.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Acked-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Acked-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/wwan/t7xx/t7xx_hif_dpmaif.h | 14 +-
drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c | 218 +++++++--------------
drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.h | 1 +
drivers/net/wwan/t7xx/t7xx_netdev.c | 89 ++++++++-
drivers/net/wwan/t7xx/t7xx_netdev.h | 5 +
5 files changed, 161 insertions(+), 166 deletions(-)
--- a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif.h
+++ b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif.h
@@ -20,6 +20,7 @@
#include <linux/bitmap.h>
#include <linux/mm_types.h>
+#include <linux/netdevice.h>
#include <linux/sched.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
@@ -109,20 +110,14 @@ struct dpmaif_rx_queue {
struct dpmaif_bat_request *bat_req;
struct dpmaif_bat_request *bat_frag;
- wait_queue_head_t rx_wq;
- struct task_struct *rx_thread;
- struct sk_buff_head skb_list;
- unsigned int skb_list_max_len;
-
- struct workqueue_struct *worker;
- struct work_struct dpmaif_rxq_work;
-
atomic_t rx_processing;
struct dpmaif_ctrl *dpmaif_ctrl;
unsigned int expect_pit_seq;
unsigned int pit_remain_release_cnt;
struct dpmaif_cur_rx_skb_info rx_data_info;
+ struct napi_struct napi;
+ bool sleep_lock_pending;
};
struct dpmaif_tx_queue {
@@ -168,7 +163,8 @@ enum dpmaif_txq_state {
struct dpmaif_callbacks {
void (*state_notify)(struct t7xx_pci_dev *t7xx_dev,
enum dpmaif_txq_state state, int txq_number);
- void (*recv_skb)(struct t7xx_pci_dev *t7xx_dev, struct sk_buff *skb);
+ void (*recv_skb)(struct t7xx_ccmni_ctrl *ccmni_ctlb, struct sk_buff *skb,
+ struct napi_struct *napi);
};
struct dpmaif_ctrl {
--- a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c
+++ b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c
@@ -45,6 +45,7 @@
#include "t7xx_dpmaif.h"
#include "t7xx_hif_dpmaif.h"
#include "t7xx_hif_dpmaif_rx.h"
+#include "t7xx_netdev.h"
#include "t7xx_pci.h"
#define DPMAIF_BAT_COUNT 8192
@@ -76,43 +77,6 @@ static unsigned int t7xx_normal_pit_bid(
return value;
}
-static int t7xx_dpmaif_net_rx_push_thread(void *arg)
-{
- struct dpmaif_rx_queue *q = arg;
- struct dpmaif_ctrl *hif_ctrl;
- struct dpmaif_callbacks *cb;
-
- hif_ctrl = q->dpmaif_ctrl;
- cb = hif_ctrl->callbacks;
-
- while (!kthread_should_stop()) {
- struct sk_buff *skb;
- unsigned long flags;
-
- if (skb_queue_empty(&q->skb_list)) {
- if (wait_event_interruptible(q->rx_wq,
- !skb_queue_empty(&q->skb_list) ||
- kthread_should_stop()))
- continue;
-
- if (kthread_should_stop())
- break;
- }
-
- spin_lock_irqsave(&q->skb_list.lock, flags);
- skb = __skb_dequeue(&q->skb_list);
- spin_unlock_irqrestore(&q->skb_list.lock, flags);
-
- if (!skb)
- continue;
-
- cb->recv_skb(hif_ctrl->t7xx_dev, skb);
- cond_resched();
- }
-
- return 0;
-}
-
static int t7xx_dpmaif_update_bat_wr_idx(struct dpmaif_ctrl *dpmaif_ctrl,
const unsigned int q_num, const unsigned int bat_cnt)
{
@@ -726,21 +690,10 @@ static int t7xx_dpmaifq_rx_notify_hw(str
return ret;
}
-static void t7xx_dpmaif_rx_skb_enqueue(struct dpmaif_rx_queue *rxq, struct sk_buff *skb)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&rxq->skb_list.lock, flags);
- if (rxq->skb_list.qlen < rxq->skb_list_max_len)
- __skb_queue_tail(&rxq->skb_list, skb);
- else
- dev_kfree_skb_any(skb);
- spin_unlock_irqrestore(&rxq->skb_list.lock, flags);
-}
-
static void t7xx_dpmaif_rx_skb(struct dpmaif_rx_queue *rxq,
struct dpmaif_cur_rx_skb_info *skb_info)
{
+ struct dpmaif_ctrl *dpmaif_ctrl = rxq->dpmaif_ctrl;
struct sk_buff *skb = skb_info->cur_skb;
struct t7xx_skb_cb *skb_cb;
u8 netif_id;
@@ -758,11 +711,11 @@ static void t7xx_dpmaif_rx_skb(struct dp
skb_cb = T7XX_SKB_CB(skb);
skb_cb->netif_idx = netif_id;
skb_cb->rx_pkt_type = skb_info->pkt_type;
- t7xx_dpmaif_rx_skb_enqueue(rxq, skb);
+ dpmaif_ctrl->callbacks->recv_skb(dpmaif_ctrl->t7xx_dev->ccmni_ctlb, skb, &rxq->napi);
}
static int t7xx_dpmaif_rx_start(struct dpmaif_rx_queue *rxq, const unsigned int pit_cnt,
- const unsigned long timeout)
+ const unsigned int budget, int *once_more)
{
unsigned int cur_pit, pit_len, rx_cnt, recv_skb_cnt = 0;
struct device *dev = rxq->dpmaif_ctrl->dev;
@@ -777,13 +730,14 @@ static int t7xx_dpmaif_rx_start(struct d
struct dpmaif_pit *pkt_info;
u32 val;
- if (!skb_info->msg_pit_received && time_after_eq(jiffies, timeout))
+ if (!skb_info->msg_pit_received && recv_skb_cnt >= budget)
break;
pkt_info = (struct dpmaif_pit *)rxq->pit_base + cur_pit;
if (t7xx_dpmaif_check_pit_seq(rxq, pkt_info)) {
dev_err_ratelimited(dev, "RXQ%u checks PIT SEQ fail\n", rxq->index);
- return -EAGAIN;
+ *once_more = 1;
+ return recv_skb_cnt;
}
val = FIELD_GET(PD_PIT_PACKET_TYPE, le32_to_cpu(pkt_info->header));
@@ -817,12 +771,7 @@ static int t7xx_dpmaif_rx_start(struct d
}
memset(skb_info, 0, sizeof(*skb_info));
-
recv_skb_cnt++;
- if (!(recv_skb_cnt & DPMAIF_RX_PUSH_THRESHOLD_MASK)) {
- wake_up_all(&rxq->rx_wq);
- recv_skb_cnt = 0;
- }
}
}
@@ -837,16 +786,13 @@ static int t7xx_dpmaif_rx_start(struct d
}
}
- if (recv_skb_cnt)
- wake_up_all(&rxq->rx_wq);
-
if (!ret)
ret = t7xx_dpmaifq_rx_notify_hw(rxq);
if (ret)
return ret;
- return rx_cnt;
+ return recv_skb_cnt;
}
static unsigned int t7xx_dpmaifq_poll_pit(struct dpmaif_rx_queue *rxq)
@@ -863,53 +809,30 @@ static unsigned int t7xx_dpmaifq_poll_pi
return pit_cnt;
}
-static int t7xx_dpmaif_rx_data_collect(struct dpmaif_ctrl *dpmaif_ctrl,
- const unsigned int q_num, const unsigned int budget)
+static int t7xx_dpmaif_napi_rx_data_collect(struct dpmaif_ctrl *dpmaif_ctrl,
+ const unsigned int q_num,
+ const unsigned int budget, int *once_more)
{
struct dpmaif_rx_queue *rxq = &dpmaif_ctrl->rxq[q_num];
- unsigned long time_limit;
unsigned int cnt;
+ int ret = 0;
- time_limit = jiffies + msecs_to_jiffies(DPMAIF_WQ_TIME_LIMIT_MS);
-
- while ((cnt = t7xx_dpmaifq_poll_pit(rxq))) {
- unsigned int rd_cnt;
- int real_cnt;
-
- rd_cnt = min(cnt, budget);
-
- real_cnt = t7xx_dpmaif_rx_start(rxq, rd_cnt, time_limit);
- if (real_cnt < 0)
- return real_cnt;
-
- if (real_cnt < cnt)
- return -EAGAIN;
- }
-
- return 0;
-}
+ cnt = t7xx_dpmaifq_poll_pit(rxq);
+ if (!cnt)
+ return ret;
-static void t7xx_dpmaif_do_rx(struct dpmaif_ctrl *dpmaif_ctrl, struct dpmaif_rx_queue *rxq)
-{
- struct dpmaif_hw_info *hw_info = &dpmaif_ctrl->hw_info;
- int ret;
+ ret = t7xx_dpmaif_rx_start(rxq, cnt, budget, once_more);
+ if (ret < 0)
+ dev_err(dpmaif_ctrl->dev, "dlq%u rx ERR:%d\n", rxq->index, ret);
- ret = t7xx_dpmaif_rx_data_collect(dpmaif_ctrl, rxq->index, rxq->budget);
- if (ret < 0) {
- /* Try one more time */
- queue_work(rxq->worker, &rxq->dpmaif_rxq_work);
- t7xx_dpmaif_clr_ip_busy_sts(hw_info);
- } else {
- t7xx_dpmaif_clr_ip_busy_sts(hw_info);
- t7xx_dpmaif_dlq_unmask_rx_done(hw_info, rxq->index);
- }
+ return ret;
}
-static void t7xx_dpmaif_rxq_work(struct work_struct *work)
+int t7xx_dpmaif_napi_rx_poll(struct napi_struct *napi, const int budget)
{
- struct dpmaif_rx_queue *rxq = container_of(work, struct dpmaif_rx_queue, dpmaif_rxq_work);
- struct dpmaif_ctrl *dpmaif_ctrl = rxq->dpmaif_ctrl;
- int ret;
+ struct dpmaif_rx_queue *rxq = container_of(napi, struct dpmaif_rx_queue, napi);
+ struct t7xx_pci_dev *t7xx_dev = rxq->dpmaif_ctrl->t7xx_dev;
+ int ret, once_more = 0, work_done = 0;
atomic_set(&rxq->rx_processing, 1);
/* Ensure rx_processing is changed to 1 before actually begin RX flow */
@@ -917,22 +840,52 @@ static void t7xx_dpmaif_rxq_work(struct
if (!rxq->que_started) {
atomic_set(&rxq->rx_processing, 0);
- dev_err(dpmaif_ctrl->dev, "Work RXQ: %d has not been started\n", rxq->index);
- return;
+ dev_err(rxq->dpmaif_ctrl->dev, "Work RXQ: %d has not been started\n", rxq->index);
+ return work_done;
}
- ret = pm_runtime_resume_and_get(dpmaif_ctrl->dev);
- if (ret < 0 && ret != -EACCES)
- return;
+ if (!rxq->sleep_lock_pending) {
+ pm_runtime_get_noresume(rxq->dpmaif_ctrl->dev);
+ t7xx_pci_disable_sleep(t7xx_dev);
+ }
+
+ ret = try_wait_for_completion(&t7xx_dev->sleep_lock_acquire);
+ if (!ret) {
+ napi_complete_done(napi, work_done);
+ rxq->sleep_lock_pending = true;
+ napi_reschedule(napi);
+ return work_done;
+ }
+
+ rxq->sleep_lock_pending = false;
+ while (work_done < budget) {
+ int each_budget = budget - work_done;
+ int rx_cnt = t7xx_dpmaif_napi_rx_data_collect(rxq->dpmaif_ctrl, rxq->index,
+ each_budget, &once_more);
+ if (rx_cnt > 0)
+ work_done += rx_cnt;
+ else
+ break;
+ }
- t7xx_pci_disable_sleep(dpmaif_ctrl->t7xx_dev);
- if (t7xx_pci_sleep_disable_complete(dpmaif_ctrl->t7xx_dev))
- t7xx_dpmaif_do_rx(dpmaif_ctrl, rxq);
+ if (once_more) {
+ napi_gro_flush(napi, false);
+ work_done = budget;
+ t7xx_dpmaif_clr_ip_busy_sts(&rxq->dpmaif_ctrl->hw_info);
+ } else if (work_done < budget) {
+ napi_complete_done(napi, work_done);
+ t7xx_dpmaif_clr_ip_busy_sts(&rxq->dpmaif_ctrl->hw_info);
+ t7xx_dpmaif_dlq_unmask_rx_done(&rxq->dpmaif_ctrl->hw_info, rxq->index);
+ } else {
+ t7xx_dpmaif_clr_ip_busy_sts(&rxq->dpmaif_ctrl->hw_info);
+ }
- t7xx_pci_enable_sleep(dpmaif_ctrl->t7xx_dev);
- pm_runtime_mark_last_busy(dpmaif_ctrl->dev);
- pm_runtime_put_autosuspend(dpmaif_ctrl->dev);
+ t7xx_pci_enable_sleep(rxq->dpmaif_ctrl->t7xx_dev);
+ pm_runtime_mark_last_busy(rxq->dpmaif_ctrl->dev);
+ pm_runtime_put_noidle(rxq->dpmaif_ctrl->dev);
atomic_set(&rxq->rx_processing, 0);
+
+ return work_done;
}
void t7xx_dpmaif_irq_rx_done(struct dpmaif_ctrl *dpmaif_ctrl, const unsigned int que_mask)
@@ -947,7 +900,7 @@ void t7xx_dpmaif_irq_rx_done(struct dpma
}
rxq = &dpmaif_ctrl->rxq[qno];
- queue_work(rxq->worker, &rxq->dpmaif_rxq_work);
+ napi_schedule(&rxq->napi);
}
static void t7xx_dpmaif_base_free(const struct dpmaif_ctrl *dpmaif_ctrl,
@@ -1082,50 +1035,14 @@ int t7xx_dpmaif_rxq_init(struct dpmaif_r
int ret;
ret = t7xx_dpmaif_rx_alloc(queue);
- if (ret < 0) {
+ if (ret < 0)
dev_err(queue->dpmaif_ctrl->dev, "Failed to allocate RX buffers: %d\n", ret);
- return ret;
- }
-
- INIT_WORK(&queue->dpmaif_rxq_work, t7xx_dpmaif_rxq_work);
-
- queue->worker = alloc_workqueue("dpmaif_rx%d_worker",
- WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_HIGHPRI, 1, queue->index);
- if (!queue->worker) {
- ret = -ENOMEM;
- goto err_free_rx_buffer;
- }
-
- init_waitqueue_head(&queue->rx_wq);
- skb_queue_head_init(&queue->skb_list);
- queue->skb_list_max_len = queue->bat_req->pkt_buf_sz;
- queue->rx_thread = kthread_run(t7xx_dpmaif_net_rx_push_thread,
- queue, "dpmaif_rx%d_push", queue->index);
-
- ret = PTR_ERR_OR_ZERO(queue->rx_thread);
- if (ret)
- goto err_free_workqueue;
-
- return 0;
-
-err_free_workqueue:
- destroy_workqueue(queue->worker);
-
-err_free_rx_buffer:
- t7xx_dpmaif_rx_buf_free(queue);
return ret;
}
void t7xx_dpmaif_rxq_free(struct dpmaif_rx_queue *queue)
{
- if (queue->worker)
- destroy_workqueue(queue->worker);
-
- if (queue->rx_thread)
- kthread_stop(queue->rx_thread);
-
- skb_queue_purge(&queue->skb_list);
t7xx_dpmaif_rx_buf_free(queue);
}
@@ -1188,8 +1105,6 @@ void t7xx_dpmaif_rx_stop(struct dpmaif_c
struct dpmaif_rx_queue *rxq = &dpmaif_ctrl->rxq[i];
int timeout, value;
- flush_work(&rxq->dpmaif_rxq_work);
-
timeout = readx_poll_timeout_atomic(atomic_read, &rxq->rx_processing, value,
!value, 0, DPMAIF_CHECK_INIT_TIMEOUT_US);
if (timeout)
@@ -1205,7 +1120,6 @@ static void t7xx_dpmaif_stop_rxq(struct
{
int cnt, j = 0;
- flush_work(&rxq->dpmaif_rxq_work);
rxq->que_started = false;
do {
--- a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.h
+++ b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.h
@@ -112,5 +112,6 @@ int t7xx_dpmaif_bat_alloc(const struct d
const enum bat_type buf_type);
void t7xx_dpmaif_bat_free(const struct dpmaif_ctrl *dpmaif_ctrl,
struct dpmaif_bat_request *bat_req);
+int t7xx_dpmaif_napi_rx_poll(struct napi_struct *napi, const int budget);
#endif /* __T7XX_HIF_DPMA_RX_H__ */
--- a/drivers/net/wwan/t7xx/t7xx_netdev.c
+++ b/drivers/net/wwan/t7xx/t7xx_netdev.c
@@ -22,6 +22,7 @@
#include <linux/gfp.h>
#include <linux/if_arp.h>
#include <linux/if_ether.h>
+#include <linux/ip.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/netdev_features.h>
@@ -29,6 +30,7 @@
#include <linux/skbuff.h>
#include <linux/types.h>
#include <linux/wwan.h>
+#include <net/ipv6.h>
#include <net/pkt_sched.h>
#include "t7xx_hif_dpmaif_rx.h"
@@ -39,13 +41,47 @@
#include "t7xx_state_monitor.h"
#define IP_MUX_SESSION_DEFAULT 0
+#define SBD_PACKET_TYPE_MASK GENMASK(7, 4)
+
+static void t7xx_ccmni_enable_napi(struct t7xx_ccmni_ctrl *ctlb)
+{
+ int i;
+
+ if (ctlb->is_napi_en)
+ return;
+
+ for (i = 0; i < RXQ_NUM; i++) {
+ napi_enable(ctlb->napi[i]);
+ napi_schedule(ctlb->napi[i]);
+ }
+ ctlb->is_napi_en = true;
+}
+
+static void t7xx_ccmni_disable_napi(struct t7xx_ccmni_ctrl *ctlb)
+{
+ int i;
+
+ if (!ctlb->is_napi_en)
+ return;
+
+ for (i = 0; i < RXQ_NUM; i++) {
+ napi_synchronize(ctlb->napi[i]);
+ napi_disable(ctlb->napi[i]);
+ }
+
+ ctlb->is_napi_en = false;
+}
static int t7xx_ccmni_open(struct net_device *dev)
{
struct t7xx_ccmni *ccmni = wwan_netdev_drvpriv(dev);
+ struct t7xx_ccmni_ctrl *ccmni_ctl = ccmni->ctlb;
netif_carrier_on(dev);
netif_tx_start_all_queues(dev);
+ if (!atomic_fetch_inc(&ccmni_ctl->napi_usr_refcnt))
+ t7xx_ccmni_enable_napi(ccmni_ctl);
+
atomic_inc(&ccmni->usage);
return 0;
}
@@ -53,8 +89,12 @@ static int t7xx_ccmni_open(struct net_de
static int t7xx_ccmni_close(struct net_device *dev)
{
struct t7xx_ccmni *ccmni = wwan_netdev_drvpriv(dev);
+ struct t7xx_ccmni_ctrl *ccmni_ctl = ccmni->ctlb;
atomic_dec(&ccmni->usage);
+ if (atomic_dec_and_test(&ccmni_ctl->napi_usr_refcnt))
+ t7xx_ccmni_disable_napi(ccmni_ctl);
+
netif_carrier_off(dev);
netif_tx_disable(dev);
return 0;
@@ -127,6 +167,9 @@ static void t7xx_ccmni_start(struct t7xx
netif_carrier_on(ccmni->dev);
}
}
+
+ if (atomic_read(&ctlb->napi_usr_refcnt))
+ t7xx_ccmni_enable_napi(ctlb);
}
static void t7xx_ccmni_pre_stop(struct t7xx_ccmni_ctrl *ctlb)
@@ -149,6 +192,9 @@ static void t7xx_ccmni_post_stop(struct
struct t7xx_ccmni *ccmni;
int i;
+ if (atomic_read(&ctlb->napi_usr_refcnt))
+ t7xx_ccmni_disable_napi(ctlb);
+
for (i = 0; i < ctlb->nic_dev_num; i++) {
ccmni = ctlb->ccmni_inst[i];
if (!ccmni)
@@ -183,6 +229,9 @@ static void t7xx_ccmni_wwan_setup(struct
dev->features |= NETIF_F_RXCSUM;
dev->hw_features |= NETIF_F_RXCSUM;
+ dev->features |= NETIF_F_GRO;
+ dev->hw_features |= NETIF_F_GRO;
+
dev->needs_free_netdev = true;
dev->type = ARPHRD_NONE;
@@ -190,6 +239,34 @@ static void t7xx_ccmni_wwan_setup(struct
dev->netdev_ops = &ccmni_netdev_ops;
}
+static void t7xx_init_netdev_napi(struct t7xx_ccmni_ctrl *ctlb)
+{
+ int i;
+
+ /* one HW, but shared with multiple net devices,
+ * so add a dummy device for NAPI.
+ */
+ init_dummy_netdev(&ctlb->dummy_dev);
+ atomic_set(&ctlb->napi_usr_refcnt, 0);
+ ctlb->is_napi_en = false;
+
+ for (i = 0; i < RXQ_NUM; i++) {
+ ctlb->napi[i] = &ctlb->hif_ctrl->rxq[i].napi;
+ netif_napi_add_weight(&ctlb->dummy_dev, ctlb->napi[i], t7xx_dpmaif_napi_rx_poll,
+ NIC_NAPI_POLL_BUDGET);
+ }
+}
+
+static void t7xx_uninit_netdev_napi(struct t7xx_ccmni_ctrl *ctlb)
+{
+ int i;
+
+ for (i = 0; i < RXQ_NUM; i++) {
+ netif_napi_del(ctlb->napi[i]);
+ ctlb->napi[i] = NULL;
+ }
+}
+
static int t7xx_ccmni_wwan_newlink(void *ctxt, struct net_device *dev, u32 if_id,
struct netlink_ext_ack *extack)
{
@@ -311,7 +388,8 @@ static void init_md_status_notifier(stru
t7xx_fsm_notifier_register(t7xx_dev->md, md_status_notifier);
}
-static void t7xx_ccmni_recv_skb(struct t7xx_pci_dev *t7xx_dev, struct sk_buff *skb)
+static void t7xx_ccmni_recv_skb(struct t7xx_ccmni_ctrl *ccmni_ctlb, struct sk_buff *skb,
+ struct napi_struct *napi)
{
struct t7xx_skb_cb *skb_cb;
struct net_device *net_dev;
@@ -321,23 +399,22 @@ static void t7xx_ccmni_recv_skb(struct t
skb_cb = T7XX_SKB_CB(skb);
netif_id = skb_cb->netif_idx;
- ccmni = t7xx_dev->ccmni_ctlb->ccmni_inst[netif_id];
+ ccmni = ccmni_ctlb->ccmni_inst[netif_id];
if (!ccmni) {
dev_kfree_skb(skb);
return;
}
net_dev = ccmni->dev;
- skb->dev = net_dev;
-
pkt_type = skb_cb->rx_pkt_type;
+ skb->dev = net_dev;
if (pkt_type == PKT_TYPE_IP6)
skb->protocol = htons(ETH_P_IPV6);
else
skb->protocol = htons(ETH_P_IP);
skb_len = skb->len;
- netif_rx(skb);
+ napi_gro_receive(napi, skb);
net_dev->stats.rx_packets++;
net_dev->stats.rx_bytes += skb_len;
}
@@ -404,6 +481,7 @@ int t7xx_ccmni_init(struct t7xx_pci_dev
if (!ctlb->hif_ctrl)
return -ENOMEM;
+ t7xx_init_netdev_napi(ctlb);
init_md_status_notifier(t7xx_dev);
return 0;
}
@@ -419,5 +497,6 @@ void t7xx_ccmni_exit(struct t7xx_pci_dev
ctlb->wwan_is_registered = false;
}
+ t7xx_uninit_netdev_napi(ctlb);
t7xx_dpmaif_hif_exit(ctlb->hif_ctrl);
}
--- a/drivers/net/wwan/t7xx/t7xx_netdev.h
+++ b/drivers/net/wwan/t7xx/t7xx_netdev.h
@@ -30,6 +30,7 @@
#define CCMNI_NETDEV_WDT_TO (1 * HZ)
#define CCMNI_MTU_MAX 3000
+#define NIC_NAPI_POLL_BUDGET 128
struct t7xx_ccmni {
u8 index;
@@ -47,6 +48,10 @@ struct t7xx_ccmni_ctrl {
unsigned int md_sta;
struct t7xx_fsm_notifier md_status_notify;
bool wwan_is_registered;
+ struct net_device dummy_dev;
+ struct napi_struct *napi[RXQ_NUM];
+ atomic_t napi_usr_refcnt;
+ bool is_napi_en;
};
int t7xx_ccmni_init(struct t7xx_pci_dev *t7xx_dev);

154
target/linux/generic/backport-6.1/621-v6.2-05-net-wwan-t7xx-Fix-Runtime-PM-resume-sequence.patch
View File

@@ -1,154 +0,0 @@
From 364d0221f1788e5225006ba7a0026e5968431c29 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kornel=20Dul=C4=99ba?= <mindal@semihalf.com>
Date: Thu, 26 Jan 2023 13:25:34 +0000
Subject: [PATCH] net: wwan: t7xx: Fix Runtime PM resume sequence
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Resume device before calling napi_schedule, instead of doing in the napi
poll routine. Polling is done in softrq context. We can't call the PM
resume logic from there as it's blocking and not irq safe.
In order to make it work modify the interrupt handler to be run from irq
handler thread.
Fixes: 5545b7b9f294 ("net: wwan: t7xx: Add NAPI support")
Signed-off-by: Kornel Dulęba <mindal@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/wwan/t7xx/t7xx_hif_dpmaif.c | 11 +++++++-
drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c | 29 +++++++++++++++-------
drivers/net/wwan/t7xx/t7xx_netdev.c | 16 +++++++++++-
3 files changed, 45 insertions(+), 11 deletions(-)
--- a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif.c
+++ b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif.c
@@ -152,6 +152,15 @@ static irqreturn_t t7xx_dpmaif_isr_handl
}
t7xx_pcie_mac_clear_int(dpmaif_ctrl->t7xx_dev, isr_para->pcie_int);
+
+ return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t t7xx_dpmaif_isr_thread(int irq, void *data)
+{
+ struct dpmaif_isr_para *isr_para = data;
+ struct dpmaif_ctrl *dpmaif_ctrl = isr_para->dpmaif_ctrl;
+
t7xx_dpmaif_irq_cb(isr_para);
t7xx_pcie_mac_set_int(dpmaif_ctrl->t7xx_dev, isr_para->pcie_int);
return IRQ_HANDLED;
@@ -188,7 +197,7 @@ static void t7xx_dpmaif_register_pcie_ir
t7xx_pcie_mac_clear_int(t7xx_dev, int_type);
t7xx_dev->intr_handler[int_type] = t7xx_dpmaif_isr_handler;
- t7xx_dev->intr_thread[int_type] = NULL;
+ t7xx_dev->intr_thread[int_type] = t7xx_dpmaif_isr_thread;
t7xx_dev->callback_param[int_type] = isr_para;
t7xx_pcie_mac_clear_int_status(t7xx_dev, int_type);
--- a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c
+++ b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c
@@ -840,14 +840,13 @@ int t7xx_dpmaif_napi_rx_poll(struct napi
if (!rxq->que_started) {
atomic_set(&rxq->rx_processing, 0);
+ pm_runtime_put_autosuspend(rxq->dpmaif_ctrl->dev);
dev_err(rxq->dpmaif_ctrl->dev, "Work RXQ: %d has not been started\n", rxq->index);
return work_done;
}
- if (!rxq->sleep_lock_pending) {
- pm_runtime_get_noresume(rxq->dpmaif_ctrl->dev);
+ if (!rxq->sleep_lock_pending)
t7xx_pci_disable_sleep(t7xx_dev);
- }
ret = try_wait_for_completion(&t7xx_dev->sleep_lock_acquire);
if (!ret) {
@@ -876,22 +875,22 @@ int t7xx_dpmaif_napi_rx_poll(struct napi
napi_complete_done(napi, work_done);
t7xx_dpmaif_clr_ip_busy_sts(&rxq->dpmaif_ctrl->hw_info);
t7xx_dpmaif_dlq_unmask_rx_done(&rxq->dpmaif_ctrl->hw_info, rxq->index);
+ t7xx_pci_enable_sleep(rxq->dpmaif_ctrl->t7xx_dev);
+ pm_runtime_mark_last_busy(rxq->dpmaif_ctrl->dev);
+ pm_runtime_put_autosuspend(rxq->dpmaif_ctrl->dev);
+ atomic_set(&rxq->rx_processing, 0);
} else {
t7xx_dpmaif_clr_ip_busy_sts(&rxq->dpmaif_ctrl->hw_info);
}
- t7xx_pci_enable_sleep(rxq->dpmaif_ctrl->t7xx_dev);
- pm_runtime_mark_last_busy(rxq->dpmaif_ctrl->dev);
- pm_runtime_put_noidle(rxq->dpmaif_ctrl->dev);
- atomic_set(&rxq->rx_processing, 0);
-
return work_done;
}
void t7xx_dpmaif_irq_rx_done(struct dpmaif_ctrl *dpmaif_ctrl, const unsigned int que_mask)
{
struct dpmaif_rx_queue *rxq;
- int qno;
+ struct dpmaif_ctrl *ctrl;
+ int qno, ret;
qno = ffs(que_mask) - 1;
if (qno < 0 || qno > DPMAIF_RXQ_NUM - 1) {
@@ -900,6 +899,18 @@ void t7xx_dpmaif_irq_rx_done(struct dpma
}
rxq = &dpmaif_ctrl->rxq[qno];
+ ctrl = rxq->dpmaif_ctrl;
+ /* We need to make sure that the modem has been resumed before
+ * calling napi. This can't be done inside the polling function
+ * as we could be blocked waiting for device to be resumed,
+ * which can't be done from softirq context the poll function
+ * is running in.
+ */
+ ret = pm_runtime_resume_and_get(ctrl->dev);
+ if (ret < 0 && ret != -EACCES) {
+ dev_err(ctrl->dev, "Failed to resume device: %d\n", ret);
+ return;
+ }
napi_schedule(&rxq->napi);
}
--- a/drivers/net/wwan/t7xx/t7xx_netdev.c
+++ b/drivers/net/wwan/t7xx/t7xx_netdev.c
@@ -27,6 +27,7 @@
#include <linux/list.h>
#include <linux/netdev_features.h>
#include <linux/netdevice.h>
+#include <linux/pm_runtime.h>
#include <linux/skbuff.h>
#include <linux/types.h>
#include <linux/wwan.h>
@@ -45,12 +46,25 @@
static void t7xx_ccmni_enable_napi(struct t7xx_ccmni_ctrl *ctlb)
{
- int i;
+ struct dpmaif_ctrl *ctrl;
+ int i, ret;
+
+ ctrl = ctlb->hif_ctrl;
if (ctlb->is_napi_en)
return;
for (i = 0; i < RXQ_NUM; i++) {
+ /* The usage count has to be bumped every time before calling
+ * napi_schedule. It will be decresed in the poll routine,
+ * right after napi_complete_done is called.
+ */
+ ret = pm_runtime_resume_and_get(ctrl->dev);
+ if (ret < 0) {
+ dev_err(ctrl->dev, "Failed to resume device: %d\n",
+ ret);
+ return;
+ }
napi_enable(ctlb->napi[i]);
napi_schedule(ctlb->napi[i]);
}

300
target/linux/generic/backport-6.1/621-v6.4-06-wwan-core-Support-slicing-in-port-TX-flow-of-WWAN-subsyst.patch
View File

@@ -1,300 +0,0 @@
From 36bd28c1cb0dbf48645cfe43159907fb3253b33a Mon Sep 17 00:00:00 2001
From: haozhe chang <haozhe.chang@mediatek.com>
Date: Thu, 16 Mar 2023 17:58:20 +0800
Subject: [PATCH] wwan: core: Support slicing in port TX flow of WWAN subsystem
wwan_port_fops_write inputs the SKB parameter to the TX callback of
the WWAN device driver. However, the WWAN device (e.g., t7xx) may
have an MTU less than the size of SKB, causing the TX buffer to be
sliced and copied once more in the WWAN device driver.
This patch implements the slicing in the WWAN subsystem and gives
the WWAN devices driver the option to slice(by frag_len) or not. By
doing so, the additional memory copy is reduced.
Meanwhile, this patch gives WWAN devices driver the option to reserve
headroom in fragments for the device-specific metadata.
Signed-off-by: haozhe chang <haozhe.chang@mediatek.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/20230316095826.181904-1-haozhe.chang@mediatek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/wwan/iosm/iosm_ipc_port.c | 3 +-
drivers/net/wwan/mhi_wwan_ctrl.c | 2 +-
drivers/net/wwan/rpmsg_wwan_ctrl.c | 2 +-
drivers/net/wwan/t7xx/t7xx_port_wwan.c | 36 ++++++++--------
drivers/net/wwan/wwan_core.c | 58 +++++++++++++++++++-------
drivers/net/wwan/wwan_hwsim.c | 2 +-
drivers/usb/class/cdc-wdm.c | 3 +-
include/linux/wwan.h | 11 +++++
8 files changed, 81 insertions(+), 36 deletions(-)
--- a/drivers/net/wwan/iosm/iosm_ipc_port.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_port.c
@@ -63,7 +63,8 @@ struct iosm_cdev *ipc_port_init(struct i
ipc_port->ipc_imem = ipc_imem;
ipc_port->iosm_port = wwan_create_port(ipc_port->dev, port_type,
- &ipc_wwan_ctrl_ops, ipc_port);
+ &ipc_wwan_ctrl_ops, NULL,
+ ipc_port);
return ipc_port;
}
--- a/drivers/net/wwan/mhi_wwan_ctrl.c
+++ b/drivers/net/wwan/mhi_wwan_ctrl.c
@@ -237,7 +237,7 @@ static int mhi_wwan_ctrl_probe(struct mh
/* Register as a wwan port, id->driver_data contains wwan port type */
port = wwan_create_port(&cntrl->mhi_dev->dev, id->driver_data,
- &wwan_pops, mhiwwan);
+ &wwan_pops, NULL, mhiwwan);
if (IS_ERR(port)) {
kfree(mhiwwan);
return PTR_ERR(port);
--- a/drivers/net/wwan/rpmsg_wwan_ctrl.c
+++ b/drivers/net/wwan/rpmsg_wwan_ctrl.c
@@ -129,7 +129,7 @@ static int rpmsg_wwan_ctrl_probe(struct
/* Register as a wwan port, id.driver_data contains wwan port type */
port = wwan_create_port(parent, rpdev->id.driver_data,
- &rpmsg_wwan_pops, rpwwan);
+ &rpmsg_wwan_pops, NULL, rpwwan);
if (IS_ERR(port))
return PTR_ERR(port);
--- a/drivers/net/wwan/t7xx/t7xx_port_wwan.c
+++ b/drivers/net/wwan/t7xx/t7xx_port_wwan.c
@@ -54,13 +54,13 @@ static void t7xx_port_ctrl_stop(struct w
static int t7xx_port_ctrl_tx(struct wwan_port *port, struct sk_buff *skb)
{
struct t7xx_port *port_private = wwan_port_get_drvdata(port);
- size_t len, offset, chunk_len = 0, txq_mtu = CLDMA_MTU;
const struct t7xx_port_conf *port_conf;
+ struct sk_buff *cur = skb, *cloned;
struct t7xx_fsm_ctl *ctl;
enum md_state md_state;
+ int cnt = 0, ret;
- len = skb->len;
- if (!len || !port_private->chan_enable)
+ if (!port_private->chan_enable)
return -EINVAL;
port_conf = port_private->port_conf;
@@ -72,23 +72,21 @@ static int t7xx_port_ctrl_tx(struct wwan
return -ENODEV;
}
- for (offset = 0; offset < len; offset += chunk_len) {
- struct sk_buff *skb_ccci;
- int ret;
-
- chunk_len = min(len - offset, txq_mtu - sizeof(struct ccci_header));
- skb_ccci = t7xx_port_alloc_skb(chunk_len);
- if (!skb_ccci)
- return -ENOMEM;
-
- skb_put_data(skb_ccci, skb->data + offset, chunk_len);
- ret = t7xx_port_send_skb(port_private, skb_ccci, 0, 0);
+ while (cur) {
+ cloned = skb_clone(cur, GFP_KERNEL);
+ cloned->len = skb_headlen(cur);
+ ret = t7xx_port_send_skb(port_private, cloned, 0, 0);
if (ret) {
- dev_kfree_skb_any(skb_ccci);
+ dev_kfree_skb(cloned);
dev_err(port_private->dev, "Write error on %s port, %d\n",
port_conf->name, ret);
- return ret;
+ return cnt ? cnt + ret : ret;
}
+ cnt += cur->len;
+ if (cur == skb)
+ cur = skb_shinfo(skb)->frag_list;
+ else
+ cur = cur->next;
}
dev_kfree_skb(skb);
@@ -154,13 +152,17 @@ static int t7xx_port_wwan_disable_chl(st
static void t7xx_port_wwan_md_state_notify(struct t7xx_port *port, unsigned int state)
{
const struct t7xx_port_conf *port_conf = port->port_conf;
+ unsigned int header_len = sizeof(struct ccci_header);
+ struct wwan_port_caps caps;
if (state != MD_STATE_READY)
return;
if (!port->wwan.wwan_port) {
+ caps.frag_len = CLDMA_MTU - header_len;
+ caps.headroom_len = header_len;
port->wwan.wwan_port = wwan_create_port(port->dev, port_conf->port_type,
- &wwan_ops, port);
+ &wwan_ops, &caps, port);
if (IS_ERR(port->wwan.wwan_port))
dev_err(port->dev, "Unable to create WWWAN port %s", port_conf->name);
}
--- a/drivers/net/wwan/wwan_core.c
+++ b/drivers/net/wwan/wwan_core.c
@@ -67,6 +67,8 @@ struct wwan_device {
* @rxq: Buffer inbound queue
* @waitqueue: The waitqueue for port fops (read/write/poll)
* @data_lock: Port specific data access serialization
+ * @headroom_len: SKB reserved headroom size
+ * @frag_len: Length to fragment packet
* @at_data: AT port specific data
*/
struct wwan_port {
@@ -79,6 +81,8 @@ struct wwan_port {
struct sk_buff_head rxq;
wait_queue_head_t waitqueue;
struct mutex data_lock; /* Port specific data access serialization */
+ size_t headroom_len;
+ size_t frag_len;
union {
struct {
struct ktermios termios;
@@ -422,6 +426,7 @@ static int __wwan_port_dev_assign_name(s
struct wwan_port *wwan_create_port(struct device *parent,
enum wwan_port_type type,
const struct wwan_port_ops *ops,
+ struct wwan_port_caps *caps,
void *drvdata)
{
struct wwan_device *wwandev;
@@ -455,6 +460,8 @@ struct wwan_port *wwan_create_port(struc
port->type = type;
port->ops = ops;
+ port->frag_len = caps ? caps->frag_len : SIZE_MAX;
+ port->headroom_len = caps ? caps->headroom_len : 0;
mutex_init(&port->ops_lock);
skb_queue_head_init(&port->rxq);
init_waitqueue_head(&port->waitqueue);
@@ -698,30 +705,53 @@ static ssize_t wwan_port_fops_read(struc
static ssize_t wwan_port_fops_write(struct file *filp, const char __user *buf,
size_t count, loff_t *offp)
{
+ struct sk_buff *skb, *head = NULL, *tail = NULL;
struct wwan_port *port = filp->private_data;
- struct sk_buff *skb;
+ size_t frag_len, remain = count;
int ret;
ret = wwan_wait_tx(port, !!(filp->f_flags & O_NONBLOCK));
if (ret)
return ret;
- skb = alloc_skb(count, GFP_KERNEL);
- if (!skb)
- return -ENOMEM;
-
- if (copy_from_user(skb_put(skb, count), buf, count)) {
- kfree_skb(skb);
- return -EFAULT;
- }
+ do {
+ frag_len = min(remain, port->frag_len);
+ skb = alloc_skb(frag_len + port->headroom_len, GFP_KERNEL);
+ if (!skb) {
+ ret = -ENOMEM;
+ goto freeskb;
+ }
+ skb_reserve(skb, port->headroom_len);
+
+ if (!head) {
+ head = skb;
+ } else if (!tail) {
+ skb_shinfo(head)->frag_list = skb;
+ tail = skb;
+ } else {
+ tail->next = skb;
+ tail = skb;
+ }
+
+ if (copy_from_user(skb_put(skb, frag_len), buf + count - remain, frag_len)) {
+ ret = -EFAULT;
+ goto freeskb;
+ }
+
+ if (skb != head) {
+ head->data_len += skb->len;
+ head->len += skb->len;
+ head->truesize += skb->truesize;
+ }
+ } while (remain -= frag_len);
- ret = wwan_port_op_tx(port, skb, !!(filp->f_flags & O_NONBLOCK));
- if (ret) {
- kfree_skb(skb);
- return ret;
- }
+ ret = wwan_port_op_tx(port, head, !!(filp->f_flags & O_NONBLOCK));
+ if (!ret)
+ return count;
- return count;
+freeskb:
+ kfree_skb(head);
+ return ret;
}
static __poll_t wwan_port_fops_poll(struct file *filp, poll_table *wait)
--- a/drivers/net/wwan/wwan_hwsim.c
+++ b/drivers/net/wwan/wwan_hwsim.c
@@ -205,7 +205,7 @@ static struct wwan_hwsim_port *wwan_hwsi
port->wwan = wwan_create_port(&dev->dev, WWAN_PORT_AT,
&wwan_hwsim_port_ops,
- port);
+ NULL, port);
if (IS_ERR(port->wwan)) {
err = PTR_ERR(port->wwan);
goto err_free_port;
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -933,7 +933,8 @@ static void wdm_wwan_init(struct wdm_dev
return;
}
- port = wwan_create_port(&intf->dev, desc->wwanp_type, &wdm_wwan_port_ops, desc);
+ port = wwan_create_port(&intf->dev, desc->wwanp_type, &wdm_wwan_port_ops,
+ NULL, desc);
if (IS_ERR(port)) {
dev_err(&intf->dev, "%s: Unable to create WWAN port\n",
dev_name(intf->usb_dev));
--- a/include/linux/wwan.h
+++ b/include/linux/wwan.h
@@ -62,11 +62,21 @@ struct wwan_port_ops {
poll_table *wait);
};
+/** struct wwan_port_caps - The WWAN port capbilities
+ * @frag_len: WWAN port TX fragments length
+ * @headroom_len: WWAN port TX fragments reserved headroom length
+ */
+struct wwan_port_caps {
+ size_t frag_len;
+ unsigned int headroom_len;
+};
+
/**
* wwan_create_port - Add a new WWAN port
* @parent: Device to use as parent and shared by all WWAN ports
* @type: WWAN port type
* @ops: WWAN port operations
+ * @caps: WWAN port capabilities
* @drvdata: Pointer to caller driver data
*
* Allocate and register a new WWAN port. The port will be automatically exposed
@@ -84,6 +94,7 @@ struct wwan_port_ops {
struct wwan_port *wwan_create_port(struct device *parent,
enum wwan_port_type type,
const struct wwan_port_ops *ops,
+ struct wwan_port_caps *caps,
void *drvdata);
/**

121
target/linux/generic/backport-6.1/621-v6.5-07-net-wwan-t7xx-Use-alloc_ordered_workqueue-to-create.patch
View File

@@ -1,121 +0,0 @@
From 72b1fe6cc6523908bfc339d07d18cb0f3469a643 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Thu, 25 May 2023 12:15:29 -1000
Subject: [PATCH] net: wwan: t7xx: Use alloc_ordered_workqueue() to create
ordered workqueues
BACKGROUND
==========
When multiple work items are queued to a workqueue, their execution order
doesn't match the queueing order. They may get executed in any order and
simultaneously. When fully serialized execution - one by one in the queueing
order - is needed, an ordered workqueue should be used which can be created
with alloc_ordered_workqueue().
However, alloc_ordered_workqueue() was a later addition. Before it, an
ordered workqueue could be obtained by creating an UNBOUND workqueue with
@max_active==1. This originally was an implementation side-effect which was
broken by 4c16bd327c74 ("workqueue: restore WQ_UNBOUND/max_active==1 to be
ordered"). Because there were users that depended on the ordered execution,
5c0338c68706 ("workqueue: restore WQ_UNBOUND/max_active==1 to be ordered")
made workqueue allocation path to implicitly promote UNBOUND workqueues w/
@max_active==1 to ordered workqueues.
While this has worked okay, overloading the UNBOUND allocation interface
this way creates other issues. It's difficult to tell whether a given
workqueue actually needs to be ordered and users that legitimately want a
min concurrency level wq unexpectedly gets an ordered one instead. With
planned UNBOUND workqueue updates to improve execution locality and more
prevalence of chiplet designs which can benefit from such improvements, this
isn't a state we wanna be in forever.
This patch series audits all callsites that create an UNBOUND workqueue w/
@max_active==1 and converts them to alloc_ordered_workqueue() as necessary.
WHAT TO LOOK FOR
================
The conversions are from
alloc_workqueue(WQ_UNBOUND | flags, 1, args..)
to
alloc_ordered_workqueue(flags, args...)
which don't cause any functional changes. If you know that fully ordered
execution is not necessary, please let me know. I'll drop the conversion and
instead add a comment noting the fact to reduce confusion while conversion
is in progress.
If you aren't fully sure, it's completely fine to let the conversion
through. The behavior will stay exactly the same and we can always
reconsider later.
As there are follow-up workqueue core changes, I'd really appreciate if the
patch can be routed through the workqueue tree w/ your acks. Thanks.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Cc: Intel Corporation <linuxwwan@intel.com>
Cc: Chiranjeevi Rapolu <chiranjeevi.rapolu@linux.intel.com>
Cc: Liu Haijun <haijun.liu@mediatek.com>
Cc: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Cc: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Cc: Loic Poulain <loic.poulain@linaro.org>
Cc: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: netdev@vger.kernel.org
---
drivers/net/wwan/t7xx/t7xx_hif_cldma.c | 13 +++++++------
drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.c | 5 +++--
2 files changed, 10 insertions(+), 8 deletions(-)
--- a/drivers/net/wwan/t7xx/t7xx_hif_cldma.c
+++ b/drivers/net/wwan/t7xx/t7xx_hif_cldma.c
@@ -1294,9 +1294,9 @@ int t7xx_cldma_init(struct cldma_ctrl *m
for (i = 0; i < CLDMA_TXQ_NUM; i++) {
md_cd_queue_struct_init(&md_ctrl->txq[i], md_ctrl, MTK_TX, i);
md_ctrl->txq[i].worker =
- alloc_workqueue("md_hif%d_tx%d_worker",
- WQ_UNBOUND | WQ_MEM_RECLAIM | (i ? 0 : WQ_HIGHPRI),
- 1, md_ctrl->hif_id, i);
+ alloc_ordered_workqueue("md_hif%d_tx%d_worker",
+ WQ_MEM_RECLAIM | (i ? 0 : WQ_HIGHPRI),
+ md_ctrl->hif_id, i);
if (!md_ctrl->txq[i].worker)
goto err_workqueue;
@@ -1307,9 +1307,10 @@ int t7xx_cldma_init(struct cldma_ctrl *m
md_cd_queue_struct_init(&md_ctrl->rxq[i], md_ctrl, MTK_RX, i);
INIT_WORK(&md_ctrl->rxq[i].cldma_work, t7xx_cldma_rx_done);
- md_ctrl->rxq[i].worker = alloc_workqueue("md_hif%d_rx%d_worker",
- WQ_UNBOUND | WQ_MEM_RECLAIM,
- 1, md_ctrl->hif_id, i);
+ md_ctrl->rxq[i].worker =
+ alloc_ordered_workqueue("md_hif%d_rx%d_worker",
+ WQ_MEM_RECLAIM,
+ md_ctrl->hif_id, i);
if (!md_ctrl->rxq[i].worker)
goto err_workqueue;
}
--- a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.c
+++ b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.c
@@ -618,8 +618,9 @@ int t7xx_dpmaif_txq_init(struct dpmaif_t
return ret;
}
- txq->worker = alloc_workqueue("md_dpmaif_tx%d_worker", WQ_UNBOUND | WQ_MEM_RECLAIM |
- (txq->index ? 0 : WQ_HIGHPRI), 1, txq->index);
+ txq->worker = alloc_ordered_workqueue("md_dpmaif_tx%d_worker",
+ WQ_MEM_RECLAIM | (txq->index ? 0 : WQ_HIGHPRI),
+ txq->index);
if (!txq->worker)
return -ENOMEM;

482
target/linux/generic/backport-6.1/621-v6.6-08-net-wwan-t7xx-Add-AP-CLDMA.patch
View File

@@ -1,482 +0,0 @@
From ba2274dcfda859b8a27193e68ad37bfe4da28ddc Mon Sep 17 00:00:00 2001
From: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>
Date: Tue, 11 Jul 2023 08:28:13 +0200
Subject: [PATCH] net: wwan: t7xx: Add AP CLDMA
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
At this moment with the current status, t7xx is not functional due to
problems like this after connection, if there is no activity:
[ 57.370534] mtk_t7xx 0000:72:00.0: [PM] SAP suspend error: -110
[ 57.370581] mtk_t7xx 0000:72:00.0: can't suspend
(t7xx_pci_pm_runtime_suspend [mtk_t7xx] returned -110)
because after this, the traffic no longer works.
The complete series 'net: wwan: t7xx: fw flashing & coredump support'
was reverted because of issues with the pci implementation.
In order to have at least the modem working, it would be enough if just
the first commit of the series is re-applied:
d20ef656f994 net: wwan: t7xx: Add AP CLDMA
With that, the Application Processor would be controlled, correctly
suspended and the commented problems would be fixed (I am testing here
like this with no related issue).
This commit is independent of the others and not related to the
commented pci implementation for the new features: fw flashing and
coredump collection.
Use v2 patch version of d20ef656f994 as JinJian Song suggests
(https://patchwork.kernel.org/project/netdevbpf/patch/20230105154215.198828-1-m.chetan.kumar@linux.intel.com/).
Original text from the commit that would be re-applied:
d20ef656f994 net: wwan: t7xx: Add AP CLDMA
Author: Haijun Liu <haijun.liu@mediatek.com>
Date: Tue Aug 16 09:53:28 2022 +0530
The t7xx device contains two Cross Layer DMA (CLDMA) interfaces to
communicate with AP and Modem processors respectively. So far only
MD-CLDMA was being used, this patch enables AP-CLDMA.
Rename small Application Processor (sAP) to AP.
Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Co-developed-by: Madhusmita Sahu <madhusmita.sahu@intel.com>
Signed-off-by: Madhusmita Sahu <madhusmita.sahu@intel.com>
Signed-off-by: Moises Veleta <moises.veleta@linux.intel.com>
Signed-off-by: Devegowda Chandrashekar <chandrashekar.devegowda@intel.com>
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230711062817.6108-1-jtornosm@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/wwan/t7xx/t7xx_hif_cldma.c | 17 +++--
drivers/net/wwan/t7xx/t7xx_hif_cldma.h | 2 +-
drivers/net/wwan/t7xx/t7xx_mhccif.h | 1 +
drivers/net/wwan/t7xx/t7xx_modem_ops.c | 76 +++++++++++++++++-----
drivers/net/wwan/t7xx/t7xx_modem_ops.h | 2 +
drivers/net/wwan/t7xx/t7xx_port.h | 6 +-
drivers/net/wwan/t7xx/t7xx_port_ctrl_msg.c | 8 ++-
drivers/net/wwan/t7xx/t7xx_port_proxy.c | 18 ++++-
drivers/net/wwan/t7xx/t7xx_reg.h | 2 +-
drivers/net/wwan/t7xx/t7xx_state_monitor.c | 13 +++-
drivers/net/wwan/t7xx/t7xx_state_monitor.h | 2 +
11 files changed, 116 insertions(+), 31 deletions(-)
--- a/drivers/net/wwan/t7xx/t7xx_hif_cldma.c
+++ b/drivers/net/wwan/t7xx/t7xx_hif_cldma.c
@@ -1067,13 +1067,18 @@ static void t7xx_hw_info_init(struct cld
struct t7xx_cldma_hw *hw_info = &md_ctrl->hw_info;
u32 phy_ao_base, phy_pd_base;
- if (md_ctrl->hif_id != CLDMA_ID_MD)
- return;
-
- phy_ao_base = CLDMA1_AO_BASE;
- phy_pd_base = CLDMA1_PD_BASE;
- hw_info->phy_interrupt_id = CLDMA1_INT;
hw_info->hw_mode = MODE_BIT_64;
+
+ if (md_ctrl->hif_id == CLDMA_ID_MD) {
+ phy_ao_base = CLDMA1_AO_BASE;
+ phy_pd_base = CLDMA1_PD_BASE;
+ hw_info->phy_interrupt_id = CLDMA1_INT;
+ } else {
+ phy_ao_base = CLDMA0_AO_BASE;
+ phy_pd_base = CLDMA0_PD_BASE;
+ hw_info->phy_interrupt_id = CLDMA0_INT;
+ }
+
hw_info->ap_ao_base = t7xx_pcie_addr_transfer(pbase->pcie_ext_reg_base,
pbase->pcie_dev_reg_trsl_addr, phy_ao_base);
hw_info->ap_pdn_base = t7xx_pcie_addr_transfer(pbase->pcie_ext_reg_base,
--- a/drivers/net/wwan/t7xx/t7xx_hif_cldma.h
+++ b/drivers/net/wwan/t7xx/t7xx_hif_cldma.h
@@ -34,7 +34,7 @@
/**
* enum cldma_id - Identifiers for CLDMA HW units.
* @CLDMA_ID_MD: Modem control channel.
- * @CLDMA_ID_AP: Application Processor control channel (not used at the moment).
+ * @CLDMA_ID_AP: Application Processor control channel.
* @CLDMA_NUM: Number of CLDMA HW units available.
*/
enum cldma_id {
--- a/drivers/net/wwan/t7xx/t7xx_mhccif.h
+++ b/drivers/net/wwan/t7xx/t7xx_mhccif.h
@@ -25,6 +25,7 @@
D2H_INT_EXCEPTION_CLEARQ_DONE | \
D2H_INT_EXCEPTION_ALLQ_RESET | \
D2H_INT_PORT_ENUM | \
+ D2H_INT_ASYNC_AP_HK | \
D2H_INT_ASYNC_MD_HK)
void t7xx_mhccif_mask_set(struct t7xx_pci_dev *t7xx_dev, u32 val);
--- a/drivers/net/wwan/t7xx/t7xx_modem_ops.c
+++ b/drivers/net/wwan/t7xx/t7xx_modem_ops.c
@@ -44,6 +44,7 @@
#include "t7xx_state_monitor.h"
#define RT_ID_MD_PORT_ENUM 0
+#define RT_ID_AP_PORT_ENUM 1
/* Modem feature query identification code - "ICCC" */
#define MD_FEATURE_QUERY_ID 0x49434343
@@ -298,6 +299,7 @@ static void t7xx_md_exception(struct t7x
}
t7xx_cldma_exception(md->md_ctrl[CLDMA_ID_MD], stage);
+ t7xx_cldma_exception(md->md_ctrl[CLDMA_ID_AP], stage);
if (stage == HIF_EX_INIT)
t7xx_mhccif_h2d_swint_trigger(t7xx_dev, H2D_CH_EXCEPTION_ACK);
@@ -426,7 +428,7 @@ static int t7xx_parse_host_rt_data(struc
if (ft_spt_st != MTK_FEATURE_MUST_BE_SUPPORTED)
return -EINVAL;
- if (i == RT_ID_MD_PORT_ENUM)
+ if (i == RT_ID_MD_PORT_ENUM || i == RT_ID_AP_PORT_ENUM)
t7xx_port_enum_msg_handler(ctl->md, rt_feature->data);
}
@@ -456,12 +458,12 @@ static int t7xx_core_reset(struct t7xx_m
return 0;
}
-static void t7xx_core_hk_handler(struct t7xx_modem *md, struct t7xx_fsm_ctl *ctl,
+static void t7xx_core_hk_handler(struct t7xx_modem *md, struct t7xx_sys_info *core_info,
+ struct t7xx_fsm_ctl *ctl,
enum t7xx_fsm_event_state event_id,
enum t7xx_fsm_event_state err_detect)
{
struct t7xx_fsm_event *event = NULL, *event_next;
- struct t7xx_sys_info *core_info = &md->core_md;
struct device *dev = &md->t7xx_dev->pdev->dev;
unsigned long flags;
int ret;
@@ -531,19 +533,33 @@ static void t7xx_md_hk_wq(struct work_st
t7xx_cldma_start(md->md_ctrl[CLDMA_ID_MD]);
t7xx_fsm_broadcast_state(ctl, MD_STATE_WAITING_FOR_HS2);
md->core_md.handshake_ongoing = true;
- t7xx_core_hk_handler(md, ctl, FSM_EVENT_MD_HS2, FSM_EVENT_MD_HS2_EXIT);
+ t7xx_core_hk_handler(md, &md->core_md, ctl, FSM_EVENT_MD_HS2, FSM_EVENT_MD_HS2_EXIT);
+}
+
+static void t7xx_ap_hk_wq(struct work_struct *work)
+{
+ struct t7xx_modem *md = container_of(work, struct t7xx_modem, ap_handshake_work);
+ struct t7xx_fsm_ctl *ctl = md->fsm_ctl;
+
+ /* Clear the HS2 EXIT event appended in t7xx_core_reset(). */
+ t7xx_fsm_clr_event(ctl, FSM_EVENT_AP_HS2_EXIT);
+ t7xx_cldma_stop(md->md_ctrl[CLDMA_ID_AP]);
+ t7xx_cldma_switch_cfg(md->md_ctrl[CLDMA_ID_AP]);
+ t7xx_cldma_start(md->md_ctrl[CLDMA_ID_AP]);
+ md->core_ap.handshake_ongoing = true;
+ t7xx_core_hk_handler(md, &md->core_ap, ctl, FSM_EVENT_AP_HS2, FSM_EVENT_AP_HS2_EXIT);
}
void t7xx_md_event_notify(struct t7xx_modem *md, enum md_event_id evt_id)
{
struct t7xx_fsm_ctl *ctl = md->fsm_ctl;
- void __iomem *mhccif_base;
unsigned int int_sta;
unsigned long flags;
switch (evt_id) {
case FSM_PRE_START:
- t7xx_mhccif_mask_clr(md->t7xx_dev, D2H_INT_PORT_ENUM);
+ t7xx_mhccif_mask_clr(md->t7xx_dev, D2H_INT_PORT_ENUM | D2H_INT_ASYNC_MD_HK |
+ D2H_INT_ASYNC_AP_HK);
break;
case FSM_START:
@@ -556,16 +572,26 @@ void t7xx_md_event_notify(struct t7xx_mo
ctl->exp_flg = true;
md->exp_id &= ~D2H_INT_EXCEPTION_INIT;
md->exp_id &= ~D2H_INT_ASYNC_MD_HK;
+ md->exp_id &= ~D2H_INT_ASYNC_AP_HK;
} else if (ctl->exp_flg) {
md->exp_id &= ~D2H_INT_ASYNC_MD_HK;
- } else if (md->exp_id & D2H_INT_ASYNC_MD_HK) {
- queue_work(md->handshake_wq, &md->handshake_work);
- md->exp_id &= ~D2H_INT_ASYNC_MD_HK;
- mhccif_base = md->t7xx_dev->base_addr.mhccif_rc_base;
- iowrite32(D2H_INT_ASYNC_MD_HK, mhccif_base + REG_EP2RC_SW_INT_ACK);
- t7xx_mhccif_mask_set(md->t7xx_dev, D2H_INT_ASYNC_MD_HK);
+ md->exp_id &= ~D2H_INT_ASYNC_AP_HK;
} else {
- t7xx_mhccif_mask_clr(md->t7xx_dev, D2H_INT_ASYNC_MD_HK);
+ void __iomem *mhccif_base = md->t7xx_dev->base_addr.mhccif_rc_base;
+
+ if (md->exp_id & D2H_INT_ASYNC_MD_HK) {
+ queue_work(md->handshake_wq, &md->handshake_work);
+ md->exp_id &= ~D2H_INT_ASYNC_MD_HK;
+ iowrite32(D2H_INT_ASYNC_MD_HK, mhccif_base + REG_EP2RC_SW_INT_ACK);
+ t7xx_mhccif_mask_set(md->t7xx_dev, D2H_INT_ASYNC_MD_HK);
+ }
+
+ if (md->exp_id & D2H_INT_ASYNC_AP_HK) {
+ queue_work(md->handshake_wq, &md->ap_handshake_work);
+ md->exp_id &= ~D2H_INT_ASYNC_AP_HK;
+ iowrite32(D2H_INT_ASYNC_AP_HK, mhccif_base + REG_EP2RC_SW_INT_ACK);
+ t7xx_mhccif_mask_set(md->t7xx_dev, D2H_INT_ASYNC_AP_HK);
+ }
}
spin_unlock_irqrestore(&md->exp_lock, flags);
@@ -578,6 +604,7 @@ void t7xx_md_event_notify(struct t7xx_mo
case FSM_READY:
t7xx_mhccif_mask_set(md->t7xx_dev, D2H_INT_ASYNC_MD_HK);
+ t7xx_mhccif_mask_set(md->t7xx_dev, D2H_INT_ASYNC_AP_HK);
break;
default:
@@ -629,6 +656,12 @@ static struct t7xx_modem *t7xx_md_alloc(
md->core_md.feature_set[RT_ID_MD_PORT_ENUM] &= ~FEATURE_MSK;
md->core_md.feature_set[RT_ID_MD_PORT_ENUM] |=
FIELD_PREP(FEATURE_MSK, MTK_FEATURE_MUST_BE_SUPPORTED);
+
+ INIT_WORK(&md->ap_handshake_work, t7xx_ap_hk_wq);
+ md->core_ap.feature_set[RT_ID_AP_PORT_ENUM] &= ~FEATURE_MSK;
+ md->core_ap.feature_set[RT_ID_AP_PORT_ENUM] |=
+ FIELD_PREP(FEATURE_MSK, MTK_FEATURE_MUST_BE_SUPPORTED);
+
return md;
}
@@ -640,6 +673,7 @@ int t7xx_md_reset(struct t7xx_pci_dev *t
md->exp_id = 0;
t7xx_fsm_reset(md);
t7xx_cldma_reset(md->md_ctrl[CLDMA_ID_MD]);
+ t7xx_cldma_reset(md->md_ctrl[CLDMA_ID_AP]);
t7xx_port_proxy_reset(md->port_prox);
md->md_init_finish = true;
return t7xx_core_reset(md);
@@ -669,6 +703,10 @@ int t7xx_md_init(struct t7xx_pci_dev *t7
if (ret)
goto err_destroy_hswq;
+ ret = t7xx_cldma_alloc(CLDMA_ID_AP, t7xx_dev);
+ if (ret)
+ goto err_destroy_hswq;
+
ret = t7xx_fsm_init(md);
if (ret)
goto err_destroy_hswq;
@@ -681,12 +719,16 @@ int t7xx_md_init(struct t7xx_pci_dev *t7
if (ret)
goto err_uninit_ccmni;
- ret = t7xx_port_proxy_init(md);
+ ret = t7xx_cldma_init(md->md_ctrl[CLDMA_ID_AP]);
if (ret)
goto err_uninit_md_cldma;
+ ret = t7xx_port_proxy_init(md);
+ if (ret)
+ goto err_uninit_ap_cldma;
+
ret = t7xx_fsm_append_cmd(md->fsm_ctl, FSM_CMD_START, 0);
- if (ret) /* fsm_uninit flushes cmd queue */
+ if (ret) /* t7xx_fsm_uninit() flushes cmd queue */
goto err_uninit_proxy;
t7xx_md_sys_sw_init(t7xx_dev);
@@ -696,6 +738,9 @@ int t7xx_md_init(struct t7xx_pci_dev *t7
err_uninit_proxy:
t7xx_port_proxy_uninit(md->port_prox);
+err_uninit_ap_cldma:
+ t7xx_cldma_exit(md->md_ctrl[CLDMA_ID_AP]);
+
err_uninit_md_cldma:
t7xx_cldma_exit(md->md_ctrl[CLDMA_ID_MD]);
@@ -722,6 +767,7 @@ void t7xx_md_exit(struct t7xx_pci_dev *t
t7xx_fsm_append_cmd(md->fsm_ctl, FSM_CMD_PRE_STOP, FSM_CMD_FLAG_WAIT_FOR_COMPLETION);
t7xx_port_proxy_uninit(md->port_prox);
+ t7xx_cldma_exit(md->md_ctrl[CLDMA_ID_AP]);
t7xx_cldma_exit(md->md_ctrl[CLDMA_ID_MD]);
t7xx_ccmni_exit(t7xx_dev);
t7xx_fsm_uninit(md);
--- a/drivers/net/wwan/t7xx/t7xx_modem_ops.h
+++ b/drivers/net/wwan/t7xx/t7xx_modem_ops.h
@@ -66,10 +66,12 @@ struct t7xx_modem {
struct cldma_ctrl *md_ctrl[CLDMA_NUM];
struct t7xx_pci_dev *t7xx_dev;
struct t7xx_sys_info core_md;
+ struct t7xx_sys_info core_ap;
bool md_init_finish;
bool rgu_irq_asserted;
struct workqueue_struct *handshake_wq;
struct work_struct handshake_work;
+ struct work_struct ap_handshake_work;
struct t7xx_fsm_ctl *fsm_ctl;
struct port_proxy *port_prox;
unsigned int exp_id;
--- a/drivers/net/wwan/t7xx/t7xx_port.h
+++ b/drivers/net/wwan/t7xx/t7xx_port.h
@@ -36,9 +36,13 @@
/* Channel ID and Message ID definitions.
* The channel number consists of peer_id(15:12) , channel_id(11:0)
* peer_id:
- * 0:reserved, 1: to sAP, 2: to MD
+ * 0:reserved, 1: to AP, 2: to MD
*/
enum port_ch {
+ /* to AP */
+ PORT_CH_AP_CONTROL_RX = 0x1000,
+ PORT_CH_AP_CONTROL_TX = 0x1001,
+
/* to MD */
PORT_CH_CONTROL_RX = 0x2000,
PORT_CH_CONTROL_TX = 0x2001,
--- a/drivers/net/wwan/t7xx/t7xx_port_ctrl_msg.c
+++ b/drivers/net/wwan/t7xx/t7xx_port_ctrl_msg.c
@@ -167,8 +167,12 @@ static int control_msg_handler(struct t7
case CTL_ID_HS2_MSG:
skb_pull(skb, sizeof(*ctrl_msg_h));
- if (port_conf->rx_ch == PORT_CH_CONTROL_RX) {
- ret = t7xx_fsm_append_event(ctl, FSM_EVENT_MD_HS2, skb->data,
+ if (port_conf->rx_ch == PORT_CH_CONTROL_RX ||
+ port_conf->rx_ch == PORT_CH_AP_CONTROL_RX) {
+ int event = port_conf->rx_ch == PORT_CH_CONTROL_RX ?
+ FSM_EVENT_MD_HS2 : FSM_EVENT_AP_HS2;
+
+ ret = t7xx_fsm_append_event(ctl, event, skb->data,
le32_to_cpu(ctrl_msg_h->data_length));
if (ret)
dev_err(port->dev, "Failed to append Handshake 2 event");
--- a/drivers/net/wwan/t7xx/t7xx_port_proxy.c
+++ b/drivers/net/wwan/t7xx/t7xx_port_proxy.c
@@ -48,7 +48,7 @@
i < (proxy)->port_count; \
i++, (p) = &(proxy)->ports[i])
-static const struct t7xx_port_conf t7xx_md_port_conf[] = {
+static const struct t7xx_port_conf t7xx_port_conf[] = {
{
.tx_ch = PORT_CH_UART2_TX,
.rx_ch = PORT_CH_UART2_RX,
@@ -89,6 +89,14 @@ static const struct t7xx_port_conf t7xx_
.path_id = CLDMA_ID_MD,
.ops = &ctl_port_ops,
.name = "t7xx_ctrl",
+ }, {
+ .tx_ch = PORT_CH_AP_CONTROL_TX,
+ .rx_ch = PORT_CH_AP_CONTROL_RX,
+ .txq_index = Q_IDX_CTRL,
+ .rxq_index = Q_IDX_CTRL,
+ .path_id = CLDMA_ID_AP,
+ .ops = &ctl_port_ops,
+ .name = "t7xx_ap_ctrl",
},
};
@@ -428,6 +436,9 @@ static void t7xx_proxy_init_all_ports(st
if (port_conf->tx_ch == PORT_CH_CONTROL_TX)
md->core_md.ctl_port = port;
+ if (port_conf->tx_ch == PORT_CH_AP_CONTROL_TX)
+ md->core_ap.ctl_port = port;
+
port->t7xx_dev = md->t7xx_dev;
port->dev = &md->t7xx_dev->pdev->dev;
spin_lock_init(&port->port_update_lock);
@@ -442,7 +453,7 @@ static void t7xx_proxy_init_all_ports(st
static int t7xx_proxy_alloc(struct t7xx_modem *md)
{
- unsigned int port_count = ARRAY_SIZE(t7xx_md_port_conf);
+ unsigned int port_count = ARRAY_SIZE(t7xx_port_conf);
struct device *dev = &md->t7xx_dev->pdev->dev;
struct port_proxy *port_prox;
int i;
@@ -456,7 +467,7 @@ static int t7xx_proxy_alloc(struct t7xx_
port_prox->dev = dev;
for (i = 0; i < port_count; i++)
- port_prox->ports[i].port_conf = &t7xx_md_port_conf[i];
+ port_prox->ports[i].port_conf = &t7xx_port_conf[i];
port_prox->port_count = port_count;
t7xx_proxy_init_all_ports(md);
@@ -481,6 +492,7 @@ int t7xx_port_proxy_init(struct t7xx_mod
if (ret)
return ret;
+ t7xx_cldma_set_recv_skb(md->md_ctrl[CLDMA_ID_AP], t7xx_port_proxy_recv_skb);
t7xx_cldma_set_recv_skb(md->md_ctrl[CLDMA_ID_MD], t7xx_port_proxy_recv_skb);
return 0;
}
--- a/drivers/net/wwan/t7xx/t7xx_reg.h
+++ b/drivers/net/wwan/t7xx/t7xx_reg.h
@@ -56,7 +56,7 @@
#define D2H_INT_RESUME_ACK BIT(12)
#define D2H_INT_SUSPEND_ACK_AP BIT(13)
#define D2H_INT_RESUME_ACK_AP BIT(14)
-#define D2H_INT_ASYNC_SAP_HK BIT(15)
+#define D2H_INT_ASYNC_AP_HK BIT(15)
#define D2H_INT_ASYNC_MD_HK BIT(16)
/* Register base */
--- a/drivers/net/wwan/t7xx/t7xx_state_monitor.c
+++ b/drivers/net/wwan/t7xx/t7xx_state_monitor.c
@@ -285,8 +285,9 @@ static int fsm_routine_starting(struct t
t7xx_fsm_broadcast_state(ctl, MD_STATE_WAITING_FOR_HS1);
t7xx_md_event_notify(md, FSM_START);
- wait_event_interruptible_timeout(ctl->async_hk_wq, md->core_md.ready || ctl->exp_flg,
- HZ * 60);
+ wait_event_interruptible_timeout(ctl->async_hk_wq,
+ (md->core_md.ready && md->core_ap.ready) ||
+ ctl->exp_flg, HZ * 60);
dev = &md->t7xx_dev->pdev->dev;
if (ctl->exp_flg)
@@ -299,6 +300,13 @@ static int fsm_routine_starting(struct t
fsm_routine_exception(ctl, NULL, EXCEPTION_HS_TIMEOUT);
return -ETIMEDOUT;
+ } else if (!md->core_ap.ready) {
+ dev_err(dev, "AP handshake timeout\n");
+ if (md->core_ap.handshake_ongoing)
+ t7xx_fsm_append_event(ctl, FSM_EVENT_AP_HS2_EXIT, NULL, 0);
+
+ fsm_routine_exception(ctl, NULL, EXCEPTION_HS_TIMEOUT);
+ return -ETIMEDOUT;
}
t7xx_pci_pm_init_late(md->t7xx_dev);
@@ -335,6 +343,7 @@ static void fsm_routine_start(struct t7x
return;
}
+ t7xx_cldma_hif_hw_init(md->md_ctrl[CLDMA_ID_AP]);
t7xx_cldma_hif_hw_init(md->md_ctrl[CLDMA_ID_MD]);
fsm_finish_command(ctl, cmd, fsm_routine_starting(ctl));
}
--- a/drivers/net/wwan/t7xx/t7xx_state_monitor.h
+++ b/drivers/net/wwan/t7xx/t7xx_state_monitor.h
@@ -38,10 +38,12 @@ enum t7xx_fsm_state {
enum t7xx_fsm_event_state {
FSM_EVENT_INVALID,
FSM_EVENT_MD_HS2,
+ FSM_EVENT_AP_HS2,
FSM_EVENT_MD_EX,
FSM_EVENT_MD_EX_REC_OK,
FSM_EVENT_MD_EX_PASS,
FSM_EVENT_MD_HS2_EXIT,
+ FSM_EVENT_AP_HS2_EXIT,
FSM_EVENT_MAX
};

32
target/linux/generic/backport-6.1/701-net-next-net-sfp-add-quirk-for-Fiberstone-GPON-ONU-34-20BI.patch
View File

@@ -1,32 +0,0 @@
From d387e34fec407f881fdf165b5d7ec128ebff362f Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Tue, 19 Sep 2023 14:47:20 +0200
Subject: [PATCH] net: sfp: add quirk for Fiberstone GPON-ONU-34-20BI
Fiberstone GPON-ONU-34-20B can operate at 2500base-X, but report 1.2GBd
NRZ in their EEPROM.
The module also require the ignore tx fault fixup similar to Huawei MA5671A
as it gets disabled on error messages with serial redirection enabled.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://lore.kernel.org/r/20230919124720.8210-1-ansuelsmth@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/phy/sfp.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -393,6 +393,11 @@ static const struct sfp_quirk sfp_quirks
SFP_QUIRK("ALCATELLUCENT", "3FE46541AA", sfp_quirk_2500basex,
sfp_fixup_long_startup),
+ // Fiberstore GPON-ONU-34-20BI can operate at 2500base-X, but report 1.2GBd
+ // NRZ in their EEPROM
+ SFP_QUIRK("FS", "GPON-ONU-34-20BI", sfp_quirk_2500basex,
+ sfp_fixup_ignore_tx_fault),
+
SFP_QUIRK_F("HALNy", "HL-GSFP", sfp_fixup_halny_gsfp),
// HG MXPD-483II-F 2.5G supports 2500Base-X, but incorrectly reports

2306
target/linux/generic/backport-6.1/702-01-v6.7-net-phy-aquantia-move-to-separate-directory.patch
View File

File diff suppressed because it is too large Load Diff

183
target/linux/generic/backport-6.1/702-02-v6.7-net-phy-aquantia-move-MMD_VEND-define-to-header.patch
View File

@@ -1,183 +0,0 @@
From e1fbfa4a995d42e02e22b0dff2f8b4fdee1504b3 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Tue, 14 Nov 2023 15:08:42 +0100
Subject: [PATCH 2/3] net: phy: aquantia: move MMD_VEND define to header
Move MMD_VEND define to header to clean things up and in preparation for
firmware loading support that require some define placed in
aquantia_main.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/aquantia/aquantia.h | 69 +++++++++++++++++++++++
drivers/net/phy/aquantia/aquantia_hwmon.c | 14 -----
drivers/net/phy/aquantia/aquantia_main.c | 55 ------------------
3 files changed, 69 insertions(+), 69 deletions(-)
--- a/drivers/net/phy/aquantia/aquantia.h
+++ b/drivers/net/phy/aquantia/aquantia.h
@@ -9,6 +9,75 @@
#include <linux/device.h>
#include <linux/phy.h>
+/* Vendor specific 1, MDIO_MMD_VEND1 */
+#define VEND1_GLOBAL_FW_ID 0x0020
+#define VEND1_GLOBAL_FW_ID_MAJOR GENMASK(15, 8)
+#define VEND1_GLOBAL_FW_ID_MINOR GENMASK(7, 0)
+
+/* The following registers all have similar layouts; first the registers... */
+#define VEND1_GLOBAL_CFG_10M 0x0310
+#define VEND1_GLOBAL_CFG_100M 0x031b
+#define VEND1_GLOBAL_CFG_1G 0x031c
+#define VEND1_GLOBAL_CFG_2_5G 0x031d
+#define VEND1_GLOBAL_CFG_5G 0x031e
+#define VEND1_GLOBAL_CFG_10G 0x031f
+/* ...and now the fields */
+#define VEND1_GLOBAL_CFG_RATE_ADAPT GENMASK(8, 7)
+#define VEND1_GLOBAL_CFG_RATE_ADAPT_NONE 0
+#define VEND1_GLOBAL_CFG_RATE_ADAPT_USX 1
+#define VEND1_GLOBAL_CFG_RATE_ADAPT_PAUSE 2
+
+/* Vendor specific 1, MDIO_MMD_VEND2 */
+#define VEND1_THERMAL_PROV_HIGH_TEMP_FAIL 0xc421
+#define VEND1_THERMAL_PROV_LOW_TEMP_FAIL 0xc422
+#define VEND1_THERMAL_PROV_HIGH_TEMP_WARN 0xc423
+#define VEND1_THERMAL_PROV_LOW_TEMP_WARN 0xc424
+#define VEND1_THERMAL_STAT1 0xc820
+#define VEND1_THERMAL_STAT2 0xc821
+#define VEND1_THERMAL_STAT2_VALID BIT(0)
+#define VEND1_GENERAL_STAT1 0xc830
+#define VEND1_GENERAL_STAT1_HIGH_TEMP_FAIL BIT(14)
+#define VEND1_GENERAL_STAT1_LOW_TEMP_FAIL BIT(13)
+#define VEND1_GENERAL_STAT1_HIGH_TEMP_WARN BIT(12)
+#define VEND1_GENERAL_STAT1_LOW_TEMP_WARN BIT(11)
+
+#define VEND1_GLOBAL_GEN_STAT2 0xc831
+#define VEND1_GLOBAL_GEN_STAT2_OP_IN_PROG BIT(15)
+
+#define VEND1_GLOBAL_RSVD_STAT1 0xc885
+#define VEND1_GLOBAL_RSVD_STAT1_FW_BUILD_ID GENMASK(7, 4)
+#define VEND1_GLOBAL_RSVD_STAT1_PROV_ID GENMASK(3, 0)
+
+#define VEND1_GLOBAL_RSVD_STAT9 0xc88d
+#define VEND1_GLOBAL_RSVD_STAT9_MODE GENMASK(7, 0)
+#define VEND1_GLOBAL_RSVD_STAT9_1000BT2 0x23
+
+#define VEND1_GLOBAL_INT_STD_STATUS 0xfc00
+#define VEND1_GLOBAL_INT_VEND_STATUS 0xfc01
+
+#define VEND1_GLOBAL_INT_STD_MASK 0xff00
+#define VEND1_GLOBAL_INT_STD_MASK_PMA1 BIT(15)
+#define VEND1_GLOBAL_INT_STD_MASK_PMA2 BIT(14)
+#define VEND1_GLOBAL_INT_STD_MASK_PCS1 BIT(13)
+#define VEND1_GLOBAL_INT_STD_MASK_PCS2 BIT(12)
+#define VEND1_GLOBAL_INT_STD_MASK_PCS3 BIT(11)
+#define VEND1_GLOBAL_INT_STD_MASK_PHY_XS1 BIT(10)
+#define VEND1_GLOBAL_INT_STD_MASK_PHY_XS2 BIT(9)
+#define VEND1_GLOBAL_INT_STD_MASK_AN1 BIT(8)
+#define VEND1_GLOBAL_INT_STD_MASK_AN2 BIT(7)
+#define VEND1_GLOBAL_INT_STD_MASK_GBE BIT(6)
+#define VEND1_GLOBAL_INT_STD_MASK_ALL BIT(0)
+
+#define VEND1_GLOBAL_INT_VEND_MASK 0xff01
+#define VEND1_GLOBAL_INT_VEND_MASK_PMA BIT(15)
+#define VEND1_GLOBAL_INT_VEND_MASK_PCS BIT(14)
+#define VEND1_GLOBAL_INT_VEND_MASK_PHY_XS BIT(13)
+#define VEND1_GLOBAL_INT_VEND_MASK_AN BIT(12)
+#define VEND1_GLOBAL_INT_VEND_MASK_GBE BIT(11)
+#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL1 BIT(2)
+#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL2 BIT(1)
+#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL3 BIT(0)
+
#if IS_REACHABLE(CONFIG_HWMON)
int aqr_hwmon_probe(struct phy_device *phydev);
#else
--- a/drivers/net/phy/aquantia/aquantia_hwmon.c
+++ b/drivers/net/phy/aquantia/aquantia_hwmon.c
@@ -13,20 +13,6 @@
#include "aquantia.h"
-/* Vendor specific 1, MDIO_MMD_VEND2 */
-#define VEND1_THERMAL_PROV_HIGH_TEMP_FAIL 0xc421
-#define VEND1_THERMAL_PROV_LOW_TEMP_FAIL 0xc422
-#define VEND1_THERMAL_PROV_HIGH_TEMP_WARN 0xc423
-#define VEND1_THERMAL_PROV_LOW_TEMP_WARN 0xc424
-#define VEND1_THERMAL_STAT1 0xc820
-#define VEND1_THERMAL_STAT2 0xc821
-#define VEND1_THERMAL_STAT2_VALID BIT(0)
-#define VEND1_GENERAL_STAT1 0xc830
-#define VEND1_GENERAL_STAT1_HIGH_TEMP_FAIL BIT(14)
-#define VEND1_GENERAL_STAT1_LOW_TEMP_FAIL BIT(13)
-#define VEND1_GENERAL_STAT1_HIGH_TEMP_WARN BIT(12)
-#define VEND1_GENERAL_STAT1_LOW_TEMP_WARN BIT(11)
-
#if IS_REACHABLE(CONFIG_HWMON)
static umode_t aqr_hwmon_is_visible(const void *data,
--- a/drivers/net/phy/aquantia/aquantia_main.c
+++ b/drivers/net/phy/aquantia/aquantia_main.c
@@ -89,61 +89,6 @@
#define MDIO_C22EXT_STAT_SGMII_TX_FRAME_ALIGN_ERR 0xd31a
#define MDIO_C22EXT_STAT_SGMII_TX_RUNT_FRAMES 0xd31b
-/* Vendor specific 1, MDIO_MMD_VEND1 */
-#define VEND1_GLOBAL_FW_ID 0x0020
-#define VEND1_GLOBAL_FW_ID_MAJOR GENMASK(15, 8)
-#define VEND1_GLOBAL_FW_ID_MINOR GENMASK(7, 0)
-
-#define VEND1_GLOBAL_GEN_STAT2 0xc831
-#define VEND1_GLOBAL_GEN_STAT2_OP_IN_PROG BIT(15)
-
-/* The following registers all have similar layouts; first the registers... */
-#define VEND1_GLOBAL_CFG_10M 0x0310
-#define VEND1_GLOBAL_CFG_100M 0x031b
-#define VEND1_GLOBAL_CFG_1G 0x031c
-#define VEND1_GLOBAL_CFG_2_5G 0x031d
-#define VEND1_GLOBAL_CFG_5G 0x031e
-#define VEND1_GLOBAL_CFG_10G 0x031f
-/* ...and now the fields */
-#define VEND1_GLOBAL_CFG_RATE_ADAPT GENMASK(8, 7)
-#define VEND1_GLOBAL_CFG_RATE_ADAPT_NONE 0
-#define VEND1_GLOBAL_CFG_RATE_ADAPT_USX 1
-#define VEND1_GLOBAL_CFG_RATE_ADAPT_PAUSE 2
-
-#define VEND1_GLOBAL_RSVD_STAT1 0xc885
-#define VEND1_GLOBAL_RSVD_STAT1_FW_BUILD_ID GENMASK(7, 4)
-#define VEND1_GLOBAL_RSVD_STAT1_PROV_ID GENMASK(3, 0)
-
-#define VEND1_GLOBAL_RSVD_STAT9 0xc88d
-#define VEND1_GLOBAL_RSVD_STAT9_MODE GENMASK(7, 0)
-#define VEND1_GLOBAL_RSVD_STAT9_1000BT2 0x23
-
-#define VEND1_GLOBAL_INT_STD_STATUS 0xfc00
-#define VEND1_GLOBAL_INT_VEND_STATUS 0xfc01
-
-#define VEND1_GLOBAL_INT_STD_MASK 0xff00
-#define VEND1_GLOBAL_INT_STD_MASK_PMA1 BIT(15)
-#define VEND1_GLOBAL_INT_STD_MASK_PMA2 BIT(14)
-#define VEND1_GLOBAL_INT_STD_MASK_PCS1 BIT(13)
-#define VEND1_GLOBAL_INT_STD_MASK_PCS2 BIT(12)
-#define VEND1_GLOBAL_INT_STD_MASK_PCS3 BIT(11)
-#define VEND1_GLOBAL_INT_STD_MASK_PHY_XS1 BIT(10)
-#define VEND1_GLOBAL_INT_STD_MASK_PHY_XS2 BIT(9)
-#define VEND1_GLOBAL_INT_STD_MASK_AN1 BIT(8)
-#define VEND1_GLOBAL_INT_STD_MASK_AN2 BIT(7)
-#define VEND1_GLOBAL_INT_STD_MASK_GBE BIT(6)
-#define VEND1_GLOBAL_INT_STD_MASK_ALL BIT(0)
-
-#define VEND1_GLOBAL_INT_VEND_MASK 0xff01
-#define VEND1_GLOBAL_INT_VEND_MASK_PMA BIT(15)
-#define VEND1_GLOBAL_INT_VEND_MASK_PCS BIT(14)
-#define VEND1_GLOBAL_INT_VEND_MASK_PHY_XS BIT(13)
-#define VEND1_GLOBAL_INT_VEND_MASK_AN BIT(12)
-#define VEND1_GLOBAL_INT_VEND_MASK_GBE BIT(11)
-#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL1 BIT(2)
-#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL2 BIT(1)
-#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL3 BIT(0)
-
/* Sleep and timeout for checking if the Processor-Intensive
* MDIO operation is finished
*/

504
target/linux/generic/backport-6.1/702-03-v6.7-net-phy-aquantia-add-firmware-load-support.patch
View File

@@ -1,504 +0,0 @@
From e93984ebc1c82bd34f7a1b3391efaceee0a8ae96 Mon Sep 17 00:00:00 2001
From: Robert Marko <robimarko@gmail.com>
Date: Tue, 14 Nov 2023 15:08:43 +0100
Subject: [PATCH 3/3] net: phy: aquantia: add firmware load support
Aquantia PHY-s require firmware to be loaded before they start operating.
It can be automatically loaded in case when there is a SPI-NOR connected
to Aquantia PHY-s or can be loaded from the host via MDIO.
This patch adds support for loading the firmware via MDIO as in most cases
there is no SPI-NOR being used to save on cost.
Firmware loading code itself is ported from mainline U-boot with cleanups.
The firmware has mixed values both in big and little endian.
PHY core itself is big-endian but it expects values to be in little-endian.
The firmware is little-endian but CRC-16 value for it is stored at the end
of firmware in big-endian.
It seems the PHY does the conversion internally from firmware that is
little-endian to the PHY that is big-endian on using the mailbox
but mailbox returns a big-endian CRC-16 to verify the written data
integrity.
Co-developed-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Robert Marko <robimarko@gmail.com>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/aquantia/Kconfig | 1 +
drivers/net/phy/aquantia/Makefile | 2 +-
drivers/net/phy/aquantia/aquantia.h | 32 ++
drivers/net/phy/aquantia/aquantia_firmware.c | 370 +++++++++++++++++++
drivers/net/phy/aquantia/aquantia_main.c | 6 +
5 files changed, 410 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/phy/aquantia/aquantia_firmware.c
--- a/drivers/net/phy/aquantia/Kconfig
+++ b/drivers/net/phy/aquantia/Kconfig
@@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0-only
config AQUANTIA_PHY
tristate "Aquantia PHYs"
+ select CRC_CCITT
help
Currently supports the Aquantia AQ1202, AQ2104, AQR105, AQR405
--- a/drivers/net/phy/aquantia/Makefile
+++ b/drivers/net/phy/aquantia/Makefile
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
-aquantia-objs += aquantia_main.o
+aquantia-objs += aquantia_main.o aquantia_firmware.o
ifdef CONFIG_HWMON
aquantia-objs += aquantia_hwmon.o
endif
--- a/drivers/net/phy/aquantia/aquantia.h
+++ b/drivers/net/phy/aquantia/aquantia.h
@@ -10,10 +10,35 @@
#include <linux/phy.h>
/* Vendor specific 1, MDIO_MMD_VEND1 */
+#define VEND1_GLOBAL_SC 0x0
+#define VEND1_GLOBAL_SC_SOFT_RESET BIT(15)
+#define VEND1_GLOBAL_SC_LOW_POWER BIT(11)
+
#define VEND1_GLOBAL_FW_ID 0x0020
#define VEND1_GLOBAL_FW_ID_MAJOR GENMASK(15, 8)
#define VEND1_GLOBAL_FW_ID_MINOR GENMASK(7, 0)
+#define VEND1_GLOBAL_MAILBOX_INTERFACE1 0x0200
+#define VEND1_GLOBAL_MAILBOX_INTERFACE1_EXECUTE BIT(15)
+#define VEND1_GLOBAL_MAILBOX_INTERFACE1_WRITE BIT(14)
+#define VEND1_GLOBAL_MAILBOX_INTERFACE1_CRC_RESET BIT(12)
+#define VEND1_GLOBAL_MAILBOX_INTERFACE1_BUSY BIT(8)
+
+#define VEND1_GLOBAL_MAILBOX_INTERFACE2 0x0201
+#define VEND1_GLOBAL_MAILBOX_INTERFACE3 0x0202
+#define VEND1_GLOBAL_MAILBOX_INTERFACE3_MSW_ADDR_MASK GENMASK(15, 0)
+#define VEND1_GLOBAL_MAILBOX_INTERFACE3_MSW_ADDR(x) FIELD_PREP(VEND1_GLOBAL_MAILBOX_INTERFACE3_MSW_ADDR_MASK, (u16)((x) >> 16))
+#define VEND1_GLOBAL_MAILBOX_INTERFACE4 0x0203
+#define VEND1_GLOBAL_MAILBOX_INTERFACE4_LSW_ADDR_MASK GENMASK(15, 2)
+#define VEND1_GLOBAL_MAILBOX_INTERFACE4_LSW_ADDR(x) FIELD_PREP(VEND1_GLOBAL_MAILBOX_INTERFACE4_LSW_ADDR_MASK, (u16)(x))
+
+#define VEND1_GLOBAL_MAILBOX_INTERFACE5 0x0204
+#define VEND1_GLOBAL_MAILBOX_INTERFACE5_MSW_DATA_MASK GENMASK(15, 0)
+#define VEND1_GLOBAL_MAILBOX_INTERFACE5_MSW_DATA(x) FIELD_PREP(VEND1_GLOBAL_MAILBOX_INTERFACE5_MSW_DATA_MASK, (u16)((x) >> 16))
+#define VEND1_GLOBAL_MAILBOX_INTERFACE6 0x0205
+#define VEND1_GLOBAL_MAILBOX_INTERFACE6_LSW_DATA_MASK GENMASK(15, 0)
+#define VEND1_GLOBAL_MAILBOX_INTERFACE6_LSW_DATA(x) FIELD_PREP(VEND1_GLOBAL_MAILBOX_INTERFACE6_LSW_DATA_MASK, (u16)(x))
+
/* The following registers all have similar layouts; first the registers... */
#define VEND1_GLOBAL_CFG_10M 0x0310
#define VEND1_GLOBAL_CFG_100M 0x031b
@@ -28,6 +53,11 @@
#define VEND1_GLOBAL_CFG_RATE_ADAPT_PAUSE 2
/* Vendor specific 1, MDIO_MMD_VEND2 */
+#define VEND1_GLOBAL_CONTROL2 0xc001
+#define VEND1_GLOBAL_CONTROL2_UP_RUN_STALL_RST BIT(15)
+#define VEND1_GLOBAL_CONTROL2_UP_RUN_STALL_OVD BIT(6)
+#define VEND1_GLOBAL_CONTROL2_UP_RUN_STALL BIT(0)
+
#define VEND1_THERMAL_PROV_HIGH_TEMP_FAIL 0xc421
#define VEND1_THERMAL_PROV_LOW_TEMP_FAIL 0xc422
#define VEND1_THERMAL_PROV_HIGH_TEMP_WARN 0xc423
@@ -83,3 +113,5 @@ int aqr_hwmon_probe(struct phy_device *p
#else
static inline int aqr_hwmon_probe(struct phy_device *phydev) { return 0; }
#endif
+
+int aqr_firmware_load(struct phy_device *phydev);
--- /dev/null
+++ b/drivers/net/phy/aquantia/aquantia_firmware.c
@@ -0,0 +1,370 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bitfield.h>
+#include <linux/of.h>
+#include <linux/firmware.h>
+#include <linux/crc-ccitt.h>
+#include <linux/nvmem-consumer.h>
+
+#include <asm/unaligned.h>
+
+#include "aquantia.h"
+
+#define UP_RESET_SLEEP 100
+
+/* addresses of memory segments in the phy */
+#define DRAM_BASE_ADDR 0x3FFE0000
+#define IRAM_BASE_ADDR 0x40000000
+
+/* firmware image format constants */
+#define VERSION_STRING_SIZE 0x40
+#define VERSION_STRING_OFFSET 0x0200
+/* primary offset is written at an offset from the start of the fw blob */
+#define PRIMARY_OFFSET_OFFSET 0x8
+/* primary offset needs to be then added to a base offset */
+#define PRIMARY_OFFSET_SHIFT 12
+#define PRIMARY_OFFSET(x) ((x) << PRIMARY_OFFSET_SHIFT)
+#define HEADER_OFFSET 0x300
+
+struct aqr_fw_header {
+ u32 padding;
+ u8 iram_offset[3];
+ u8 iram_size[3];
+ u8 dram_offset[3];
+ u8 dram_size[3];
+} __packed;
+
+enum aqr_fw_src {
+ AQR_FW_SRC_NVMEM = 0,
+ AQR_FW_SRC_FS,
+};
+
+static const char * const aqr_fw_src_string[] = {
+ [AQR_FW_SRC_NVMEM] = "NVMEM",
+ [AQR_FW_SRC_FS] = "FS",
+};
+
+/* AQR firmware doesn't have fixed offsets for iram and dram section
+ * but instead provide an header with the offset to use on reading
+ * and parsing the firmware.
+ *
+ * AQR firmware can't be trusted and each offset is validated to be
+ * not negative and be in the size of the firmware itself.
+ */
+static bool aqr_fw_validate_get(size_t size, size_t offset, size_t get_size)
+{
+ return offset + get_size <= size;
+}
+
+static int aqr_fw_get_be16(const u8 *data, size_t offset, size_t size, u16 *value)
+{
+ if (!aqr_fw_validate_get(size, offset, sizeof(u16)))
+ return -EINVAL;
+
+ *value = get_unaligned_be16(data + offset);
+
+ return 0;
+}
+
+static int aqr_fw_get_le16(const u8 *data, size_t offset, size_t size, u16 *value)
+{
+ if (!aqr_fw_validate_get(size, offset, sizeof(u16)))
+ return -EINVAL;
+
+ *value = get_unaligned_le16(data + offset);
+
+ return 0;
+}
+
+static int aqr_fw_get_le24(const u8 *data, size_t offset, size_t size, u32 *value)
+{
+ if (!aqr_fw_validate_get(size, offset, sizeof(u8) * 3))
+ return -EINVAL;
+
+ *value = get_unaligned_le24(data + offset);
+
+ return 0;
+}
+
+/* load data into the phy's memory */
+static int aqr_fw_load_memory(struct phy_device *phydev, u32 addr,
+ const u8 *data, size_t len)
+{
+ u16 crc = 0, up_crc;
+ size_t pos;
+
+ /* PHY expect addr in LE */
+ addr = (__force u32)cpu_to_le32(addr);
+
+ phy_write_mmd(phydev, MDIO_MMD_VEND1,
+ VEND1_GLOBAL_MAILBOX_INTERFACE1,
+ VEND1_GLOBAL_MAILBOX_INTERFACE1_CRC_RESET);
+ phy_write_mmd(phydev, MDIO_MMD_VEND1,
+ VEND1_GLOBAL_MAILBOX_INTERFACE3,
+ VEND1_GLOBAL_MAILBOX_INTERFACE3_MSW_ADDR(addr));
+ phy_write_mmd(phydev, MDIO_MMD_VEND1,
+ VEND1_GLOBAL_MAILBOX_INTERFACE4,
+ VEND1_GLOBAL_MAILBOX_INTERFACE4_LSW_ADDR(addr));
+
+ /* We assume and enforce the size to be word aligned.
+ * If a firmware that is not word aligned is found, please report upstream.
+ */
+ for (pos = 0; pos < len; pos += sizeof(u32)) {
+ u32 word;
+
+ /* FW data is always stored in little-endian */
+ word = get_unaligned((const u32 *)(data + pos));
+
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_MAILBOX_INTERFACE5,
+ VEND1_GLOBAL_MAILBOX_INTERFACE5_MSW_DATA(word));
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_MAILBOX_INTERFACE6,
+ VEND1_GLOBAL_MAILBOX_INTERFACE6_LSW_DATA(word));
+
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_MAILBOX_INTERFACE1,
+ VEND1_GLOBAL_MAILBOX_INTERFACE1_EXECUTE |
+ VEND1_GLOBAL_MAILBOX_INTERFACE1_WRITE);
+
+ /* calculate CRC as we load data to the mailbox.
+ * We convert word to big-endian as PHY is BE and mailbox will
+ * return a BE CRC.
+ */
+ word = (__force u32)cpu_to_be32(word);
+ crc = crc_ccitt_false(crc, (u8 *)&word, sizeof(word));
+ }
+
+ up_crc = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_MAILBOX_INTERFACE2);
+ if (crc != up_crc) {
+ phydev_err(phydev, "CRC mismatch: calculated 0x%04x PHY 0x%04x\n",
+ crc, up_crc);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int aqr_fw_boot(struct phy_device *phydev, const u8 *data, size_t size,
+ enum aqr_fw_src fw_src)
+{
+ u16 calculated_crc, read_crc, read_primary_offset;
+ u32 iram_offset = 0, iram_size = 0;
+ u32 dram_offset = 0, dram_size = 0;
+ char version[VERSION_STRING_SIZE];
+ u32 primary_offset = 0;
+ int ret;
+
+ /* extract saved CRC at the end of the fw
+ * CRC is saved in big-endian as PHY is BE
+ */
+ ret = aqr_fw_get_be16(data, size - sizeof(u16), size, &read_crc);
+ if (ret) {
+ phydev_err(phydev, "bad firmware CRC in firmware\n");
+ return ret;
+ }
+ calculated_crc = crc_ccitt_false(0, data, size - sizeof(u16));
+ if (read_crc != calculated_crc) {
+ phydev_err(phydev, "bad firmware CRC: file 0x%04x calculated 0x%04x\n",
+ read_crc, calculated_crc);
+ return -EINVAL;
+ }
+
+ /* Get the primary offset to extract DRAM and IRAM sections. */
+ ret = aqr_fw_get_le16(data, PRIMARY_OFFSET_OFFSET, size, &read_primary_offset);
+ if (ret) {
+ phydev_err(phydev, "bad primary offset in firmware\n");
+ return ret;
+ }
+ primary_offset = PRIMARY_OFFSET(read_primary_offset);
+
+ /* Find the DRAM and IRAM sections within the firmware file.
+ * Make sure the fw_header is correctly in the firmware.
+ */
+ if (!aqr_fw_validate_get(size, primary_offset + HEADER_OFFSET,
+ sizeof(struct aqr_fw_header))) {
+ phydev_err(phydev, "bad fw_header in firmware\n");
+ return -EINVAL;
+ }
+
+ /* offset are in LE and values needs to be converted to cpu endian */
+ ret = aqr_fw_get_le24(data, primary_offset + HEADER_OFFSET +
+ offsetof(struct aqr_fw_header, iram_offset),
+ size, &iram_offset);
+ if (ret) {
+ phydev_err(phydev, "bad iram offset in firmware\n");
+ return ret;
+ }
+ ret = aqr_fw_get_le24(data, primary_offset + HEADER_OFFSET +
+ offsetof(struct aqr_fw_header, iram_size),
+ size, &iram_size);
+ if (ret) {
+ phydev_err(phydev, "invalid iram size in firmware\n");
+ return ret;
+ }
+ ret = aqr_fw_get_le24(data, primary_offset + HEADER_OFFSET +
+ offsetof(struct aqr_fw_header, dram_offset),
+ size, &dram_offset);
+ if (ret) {
+ phydev_err(phydev, "bad dram offset in firmware\n");
+ return ret;
+ }
+ ret = aqr_fw_get_le24(data, primary_offset + HEADER_OFFSET +
+ offsetof(struct aqr_fw_header, dram_size),
+ size, &dram_size);
+ if (ret) {
+ phydev_err(phydev, "invalid dram size in firmware\n");
+ return ret;
+ }
+
+ /* Increment the offset with the primary offset.
+ * Validate iram/dram offset and size.
+ */
+ iram_offset += primary_offset;
+ if (iram_size % sizeof(u32)) {
+ phydev_err(phydev, "iram size if not aligned to word size. Please report this upstream!\n");
+ return -EINVAL;
+ }
+ if (!aqr_fw_validate_get(size, iram_offset, iram_size)) {
+ phydev_err(phydev, "invalid iram offset for iram size\n");
+ return -EINVAL;
+ }
+
+ dram_offset += primary_offset;
+ if (dram_size % sizeof(u32)) {
+ phydev_err(phydev, "dram size if not aligned to word size. Please report this upstream!\n");
+ return -EINVAL;
+ }
+ if (!aqr_fw_validate_get(size, dram_offset, dram_size)) {
+ phydev_err(phydev, "invalid iram offset for iram size\n");
+ return -EINVAL;
+ }
+
+ phydev_dbg(phydev, "primary %d IRAM offset=%d size=%d DRAM offset=%d size=%d\n",
+ primary_offset, iram_offset, iram_size, dram_offset, dram_size);
+
+ if (!aqr_fw_validate_get(size, dram_offset + VERSION_STRING_OFFSET,
+ VERSION_STRING_SIZE)) {
+ phydev_err(phydev, "invalid version in firmware\n");
+ return -EINVAL;
+ }
+ strscpy(version, (char *)data + dram_offset + VERSION_STRING_OFFSET,
+ VERSION_STRING_SIZE);
+ if (version[0] == '\0') {
+ phydev_err(phydev, "invalid version in firmware\n");
+ return -EINVAL;
+ }
+ phydev_info(phydev, "loading firmware version '%s' from '%s'\n", version,
+ aqr_fw_src_string[fw_src]);
+
+ /* stall the microcprocessor */
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_CONTROL2,
+ VEND1_GLOBAL_CONTROL2_UP_RUN_STALL | VEND1_GLOBAL_CONTROL2_UP_RUN_STALL_OVD);
+
+ phydev_dbg(phydev, "loading DRAM 0x%08x from offset=%d size=%d\n",
+ DRAM_BASE_ADDR, dram_offset, dram_size);
+ ret = aqr_fw_load_memory(phydev, DRAM_BASE_ADDR, data + dram_offset,
+ dram_size);
+ if (ret)
+ return ret;
+
+ phydev_dbg(phydev, "loading IRAM 0x%08x from offset=%d size=%d\n",
+ IRAM_BASE_ADDR, iram_offset, iram_size);
+ ret = aqr_fw_load_memory(phydev, IRAM_BASE_ADDR, data + iram_offset,
+ iram_size);
+ if (ret)
+ return ret;
+
+ /* make sure soft reset and low power mode are clear */
+ phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_SC,
+ VEND1_GLOBAL_SC_SOFT_RESET | VEND1_GLOBAL_SC_LOW_POWER);
+
+ /* Release the microprocessor. UP_RESET must be held for 100 usec. */
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_CONTROL2,
+ VEND1_GLOBAL_CONTROL2_UP_RUN_STALL |
+ VEND1_GLOBAL_CONTROL2_UP_RUN_STALL_OVD |
+ VEND1_GLOBAL_CONTROL2_UP_RUN_STALL_RST);
+ usleep_range(UP_RESET_SLEEP, UP_RESET_SLEEP * 2);
+
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_CONTROL2,
+ VEND1_GLOBAL_CONTROL2_UP_RUN_STALL_OVD);
+
+ return 0;
+}
+
+static int aqr_firmware_load_nvmem(struct phy_device *phydev)
+{
+ struct nvmem_cell *cell;
+ size_t size;
+ u8 *buf;
+ int ret;
+
+ cell = nvmem_cell_get(&phydev->mdio.dev, "firmware");
+ if (IS_ERR(cell))
+ return PTR_ERR(cell);
+
+ buf = nvmem_cell_read(cell, &size);
+ if (IS_ERR(buf)) {
+ ret = PTR_ERR(buf);
+ goto exit;
+ }
+
+ ret = aqr_fw_boot(phydev, buf, size, AQR_FW_SRC_NVMEM);
+ if (ret)
+ phydev_err(phydev, "firmware loading failed: %d\n", ret);
+
+ kfree(buf);
+exit:
+ nvmem_cell_put(cell);
+
+ return ret;
+}
+
+static int aqr_firmware_load_fs(struct phy_device *phydev)
+{
+ struct device *dev = &phydev->mdio.dev;
+ const struct firmware *fw;
+ const char *fw_name;
+ int ret;
+
+ ret = of_property_read_string(dev->of_node, "firmware-name",
+ &fw_name);
+ if (ret)
+ return ret;
+
+ ret = request_firmware(&fw, fw_name, dev);
+ if (ret) {
+ phydev_err(phydev, "failed to find FW file %s (%d)\n",
+ fw_name, ret);
+ return ret;
+ }
+
+ ret = aqr_fw_boot(phydev, fw->data, fw->size, AQR_FW_SRC_FS);
+ if (ret)
+ phydev_err(phydev, "firmware loading failed: %d\n", ret);
+
+ release_firmware(fw);
+
+ return ret;
+}
+
+int aqr_firmware_load(struct phy_device *phydev)
+{
+ int ret;
+
+ /* Check if the firmware is not already loaded by pooling
+ * the current version returned by the PHY. If 0 is returned,
+ * no firmware is loaded.
+ */
+ ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_FW_ID);
+ if (ret > 0)
+ goto exit;
+
+ ret = aqr_firmware_load_nvmem(phydev);
+ if (!ret)
+ goto exit;
+
+ ret = aqr_firmware_load_fs(phydev);
+ if (ret)
+ return ret;
+
+exit:
+ return 0;
+}
--- a/drivers/net/phy/aquantia/aquantia_main.c
+++ b/drivers/net/phy/aquantia/aquantia_main.c
@@ -656,11 +656,17 @@ static int aqr107_resume(struct phy_devi
static int aqr107_probe(struct phy_device *phydev)
{
+ int ret;
+
phydev->priv = devm_kzalloc(&phydev->mdio.dev,
sizeof(struct aqr107_priv), GFP_KERNEL);
if (!phydev->priv)
return -ENOMEM;
+ ret = aqr_firmware_load(phydev);
+ if (ret)
+ return ret;
+
return aqr_hwmon_probe(phydev);
}

326
target/linux/generic/backport-6.1/703-v6.3-net-mdio-Add-dedicated-C45-API-to-MDIO-bus-drivers.patch
View File

@@ -1,326 +0,0 @@
From 4e4aafcddbbfcdd6eed5780e190fcbfac8b4685a Mon Sep 17 00:00:00 2001
From: Andrew Lunn <andrew@lunn.ch>
Date: Mon, 9 Jan 2023 16:30:41 +0100
Subject: [PATCH] net: mdio: Add dedicated C45 API to MDIO bus drivers
Currently C22 and C45 transactions are mixed over a combined API calls
which make use of a special bit in the reg address to indicate if a
C45 transaction should be performed. This makes it impossible to know
if the bus driver actually supports C45. Additionally, many C22 only
drivers don't return -EOPNOTSUPP when asked to perform a C45
transaction, they mistaking perform a C22 transaction.
This is the first step to cleanly separate C22 from C45. To maintain
backwards compatibility until all drivers which are capable of
performing C45 are converted to this new API, the helper functions
will fall back to the older API if the new API is not
supported. Eventually this fallback will be removed.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/phy/mdio_bus.c | 189 +++++++++++++++++++++++++++++++++++++
include/linux/mdio.h | 39 ++++----
include/linux/phy.h | 5 +
3 files changed, 214 insertions(+), 19 deletions(-)
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -832,6 +832,100 @@ int __mdiobus_modify_changed(struct mii_
EXPORT_SYMBOL_GPL(__mdiobus_modify_changed);
/**
+ * __mdiobus_c45_read - Unlocked version of the mdiobus_c45_read function
+ * @bus: the mii_bus struct
+ * @addr: the phy address
+ * @devad: device address to read
+ * @regnum: register number to read
+ *
+ * Read a MDIO bus register. Caller must hold the mdio bus lock.
+ *
+ * NOTE: MUST NOT be called from interrupt context.
+ */
+int __mdiobus_c45_read(struct mii_bus *bus, int addr, int devad, u32 regnum)
+{
+ int retval;
+
+ lockdep_assert_held_once(&bus->mdio_lock);
+
+ if (bus->read_c45)
+ retval = bus->read_c45(bus, addr, devad, regnum);
+ else
+ retval = bus->read(bus, addr, mdiobus_c45_addr(devad, regnum));
+
+ trace_mdio_access(bus, 1, addr, regnum, retval, retval);
+ mdiobus_stats_acct(&bus->stats[addr], true, retval);
+
+ return retval;
+}
+EXPORT_SYMBOL(__mdiobus_c45_read);
+
+/**
+ * __mdiobus_c45_write - Unlocked version of the mdiobus_write function
+ * @bus: the mii_bus struct
+ * @addr: the phy address
+ * @devad: device address to read
+ * @regnum: register number to write
+ * @val: value to write to @regnum
+ *
+ * Write a MDIO bus register. Caller must hold the mdio bus lock.
+ *
+ * NOTE: MUST NOT be called from interrupt context.
+ */
+int __mdiobus_c45_write(struct mii_bus *bus, int addr, int devad, u32 regnum,
+ u16 val)
+{
+ int err;
+
+ lockdep_assert_held_once(&bus->mdio_lock);
+
+ if (bus->write_c45)
+ err = bus->write_c45(bus, addr, devad, regnum, val);
+ else
+ err = bus->write(bus, addr, mdiobus_c45_addr(devad, regnum),
+ val);
+
+ trace_mdio_access(bus, 0, addr, regnum, val, err);
+ mdiobus_stats_acct(&bus->stats[addr], false, err);
+
+ return err;
+}
+EXPORT_SYMBOL(__mdiobus_c45_write);
+
+/**
+ * __mdiobus_c45_modify_changed - Unlocked version of the mdiobus_modify function
+ * @bus: the mii_bus struct
+ * @addr: the phy address
+ * @devad: device address to read
+ * @regnum: register number to modify
+ * @mask: bit mask of bits to clear
+ * @set: bit mask of bits to set
+ *
+ * Read, modify, and if any change, write the register value back to the
+ * device. Any error returns a negative number.
+ *
+ * NOTE: MUST NOT be called from interrupt context.
+ */
+static int __mdiobus_c45_modify_changed(struct mii_bus *bus, int addr,
+ int devad, u32 regnum, u16 mask,
+ u16 set)
+{
+ int new, ret;
+
+ ret = __mdiobus_c45_read(bus, addr, devad, regnum);
+ if (ret < 0)
+ return ret;
+
+ new = (ret & ~mask) | set;
+ if (new == ret)
+ return 0;
+
+ ret = __mdiobus_c45_write(bus, addr, devad, regnum, new);
+
+ return ret < 0 ? ret : 1;
+}
+
+/**
* mdiobus_read_nested - Nested version of the mdiobus_read function
* @bus: the mii_bus struct
* @addr: the phy address
@@ -879,6 +973,29 @@ int mdiobus_read(struct mii_bus *bus, in
EXPORT_SYMBOL(mdiobus_read);
/**
+ * mdiobus_c45_read - Convenience function for reading a given MII mgmt register
+ * @bus: the mii_bus struct
+ * @addr: the phy address
+ * @devad: device address to read
+ * @regnum: register number to read
+ *
+ * NOTE: MUST NOT be called from interrupt context,
+ * because the bus read/write functions may wait for an interrupt
+ * to conclude the operation.
+ */
+int mdiobus_c45_read(struct mii_bus *bus, int addr, int devad, u32 regnum)
+{
+ int retval;
+
+ mutex_lock(&bus->mdio_lock);
+ retval = __mdiobus_c45_read(bus, addr, devad, regnum);
+ mutex_unlock(&bus->mdio_lock);
+
+ return retval;
+}
+EXPORT_SYMBOL(mdiobus_c45_read);
+
+/**
* mdiobus_write_nested - Nested version of the mdiobus_write function
* @bus: the mii_bus struct
* @addr: the phy address
@@ -928,6 +1045,31 @@ int mdiobus_write(struct mii_bus *bus, i
EXPORT_SYMBOL(mdiobus_write);
/**
+ * mdiobus_c45_write - Convenience function for writing a given MII mgmt register
+ * @bus: the mii_bus struct
+ * @addr: the phy address
+ * @devad: device address to read
+ * @regnum: register number to write
+ * @val: value to write to @regnum
+ *
+ * NOTE: MUST NOT be called from interrupt context,
+ * because the bus read/write functions may wait for an interrupt
+ * to conclude the operation.
+ */
+int mdiobus_c45_write(struct mii_bus *bus, int addr, int devad, u32 regnum,
+ u16 val)
+{
+ int err;
+
+ mutex_lock(&bus->mdio_lock);
+ err = __mdiobus_c45_write(bus, addr, devad, regnum, val);
+ mutex_unlock(&bus->mdio_lock);
+
+ return err;
+}
+EXPORT_SYMBOL(mdiobus_c45_write);
+
+/**
* mdiobus_modify - Convenience function for modifying a given mdio device
* register
* @bus: the mii_bus struct
@@ -949,6 +1091,30 @@ int mdiobus_modify(struct mii_bus *bus,
EXPORT_SYMBOL_GPL(mdiobus_modify);
/**
+ * mdiobus_c45_modify - Convenience function for modifying a given mdio device
+ * register
+ * @bus: the mii_bus struct
+ * @addr: the phy address
+ * @devad: device address to read
+ * @regnum: register number to write
+ * @mask: bit mask of bits to clear
+ * @set: bit mask of bits to set
+ */
+int mdiobus_c45_modify(struct mii_bus *bus, int addr, int devad, u32 regnum,
+ u16 mask, u16 set)
+{
+ int err;
+
+ mutex_lock(&bus->mdio_lock);
+ err = __mdiobus_c45_modify_changed(bus, addr, devad, regnum,
+ mask, set);
+ mutex_unlock(&bus->mdio_lock);
+
+ return err < 0 ? err : 0;
+}
+EXPORT_SYMBOL_GPL(mdiobus_c45_modify);
+
+/**
* mdiobus_modify_changed - Convenience function for modifying a given mdio
* device register and returning if it changed
* @bus: the mii_bus struct
@@ -971,6 +1137,29 @@ int mdiobus_modify_changed(struct mii_bu
EXPORT_SYMBOL_GPL(mdiobus_modify_changed);
/**
+ * mdiobus_c45_modify_changed - Convenience function for modifying a given mdio
+ * device register and returning if it changed
+ * @bus: the mii_bus struct
+ * @addr: the phy address
+ * @devad: device address to read
+ * @regnum: register number to write
+ * @mask: bit mask of bits to clear
+ * @set: bit mask of bits to set
+ */
+int mdiobus_c45_modify_changed(struct mii_bus *bus, int devad, int addr,
+ u32 regnum, u16 mask, u16 set)
+{
+ int err;
+
+ mutex_lock(&bus->mdio_lock);
+ err = __mdiobus_c45_modify_changed(bus, addr, devad, regnum, mask, set);
+ mutex_unlock(&bus->mdio_lock);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mdiobus_c45_modify_changed);
+
+/**
* mdio_bus_match - determine if given MDIO driver supports the given
* MDIO device
* @dev: target MDIO device
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -423,6 +423,17 @@ int mdiobus_modify(struct mii_bus *bus,
u16 set);
int mdiobus_modify_changed(struct mii_bus *bus, int addr, u32 regnum,
u16 mask, u16 set);
+int __mdiobus_c45_read(struct mii_bus *bus, int addr, int devad, u32 regnum);
+int mdiobus_c45_read(struct mii_bus *bus, int addr, int devad, u32 regnum);
+int __mdiobus_c45_write(struct mii_bus *bus, int addr, int devad, u32 regnum,
+ u16 val);
+int mdiobus_c45_write(struct mii_bus *bus, int addr, int devad, u32 regnum,
+ u16 val);
+int mdiobus_c45_modify(struct mii_bus *bus, int addr, int devad, u32 regnum,
+ u16 mask, u16 set);
+
+int mdiobus_c45_modify_changed(struct mii_bus *bus, int addr, int devad,
+ u32 regnum, u16 mask, u16 set);
static inline int mdiodev_read(struct mdio_device *mdiodev, u32 regnum)
{
@@ -463,29 +474,19 @@ static inline u16 mdiobus_c45_devad(u32
return FIELD_GET(MII_DEVADDR_C45_MASK, regnum);
}
-static inline int __mdiobus_c45_read(struct mii_bus *bus, int prtad, int devad,
- u16 regnum)
-{
- return __mdiobus_read(bus, prtad, mdiobus_c45_addr(devad, regnum));
-}
-
-static inline int __mdiobus_c45_write(struct mii_bus *bus, int prtad, int devad,
- u16 regnum, u16 val)
-{
- return __mdiobus_write(bus, prtad, mdiobus_c45_addr(devad, regnum),
- val);
-}
-
-static inline int mdiobus_c45_read(struct mii_bus *bus, int prtad, int devad,
- u16 regnum)
+static inline int mdiodev_c45_modify(struct mdio_device *mdiodev, int devad,
+ u32 regnum, u16 mask, u16 set)
{
- return mdiobus_read(bus, prtad, mdiobus_c45_addr(devad, regnum));
+ return mdiobus_c45_modify(mdiodev->bus, mdiodev->addr, devad, regnum,
+ mask, set);
}
-static inline int mdiobus_c45_write(struct mii_bus *bus, int prtad, int devad,
- u16 regnum, u16 val)
+static inline int mdiodev_c45_modify_changed(struct mdio_device *mdiodev,
+ int devad, u32 regnum, u16 mask,
+ u16 set)
{
- return mdiobus_write(bus, prtad, mdiobus_c45_addr(devad, regnum), val);
+ return mdiobus_c45_modify_changed(mdiodev->bus, mdiodev->addr, devad,
+ regnum, mask, set);
}
int mdiobus_register_device(struct mdio_device *mdiodev);
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -364,6 +364,11 @@ struct mii_bus {
int (*read)(struct mii_bus *bus, int addr, int regnum);
/** @write: Perform a write transfer on the bus */
int (*write)(struct mii_bus *bus, int addr, int regnum, u16 val);
+ /** @read_c45: Perform a C45 read transfer on the bus */
+ int (*read_c45)(struct mii_bus *bus, int addr, int devnum, int regnum);
+ /** @write_c45: Perform a C45 write transfer on the bus */
+ int (*write_c45)(struct mii_bus *bus, int addr, int devnum,
+ int regnum, u16 val);
/** @reset: Perform a reset of the bus */
int (*reset)(struct mii_bus *bus);

105
target/linux/generic/backport-6.1/704-v6.6-net-phy-Introduce-PSGMII-PHY-interface-mode.patch
View File

@@ -1,105 +0,0 @@
From 9a0e95e34e9c0a713ddfd48c3a88a20d2bdfd514 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <j4g8y7@gmail.com>
Date: Fri, 11 Aug 2023 13:10:07 +0200
Subject: [PATCH] net: phy: Introduce PSGMII PHY interface mode
The PSGMII interface is similar to QSGMII. The main difference
is that the PSGMII interface combines five SGMII lines into a
single link while in QSGMII only four lines are combined.
Similarly to the QSGMII, this interface mode might also needs
special handling within the MAC driver.
It is commonly used by Qualcomm with their QCA807x PHY series and
modern WiSoC-s.
Add definitions for the PHY layer to allow to express this type
of connection between the MAC and PHY.
Signed-off-by: Gabor Juhos <j4g8y7@gmail.com>
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
Documentation/networking/phy.rst | 4 ++++
drivers/net/phy/phy-core.c | 2 ++
drivers/net/phy/phylink.c | 3 +++
include/linux/phy.h | 4 ++++
4 files changed, 13 insertions(+)
--- a/Documentation/networking/phy.rst
+++ b/Documentation/networking/phy.rst
@@ -323,6 +323,10 @@ Some of the interface modes are describe
contrast with the 1000BASE-X phy mode used for Clause 38 and 39 PMDs, this
interface mode has different autonegotiation and only supports full duplex.
+``PHY_INTERFACE_MODE_PSGMII``
+ This is the Penta SGMII mode, it is similar to QSGMII but it combines 5
+ SGMII lines into a single link compared to 4 on QSGMII.
+
Pause frames / flow control
===========================
--- a/drivers/net/phy/phy-core.c
+++ b/drivers/net/phy/phy-core.c
@@ -140,6 +140,8 @@ int phy_interface_num_ports(phy_interfac
case PHY_INTERFACE_MODE_QSGMII:
case PHY_INTERFACE_MODE_QUSGMII:
return 4;
+ case PHY_INTERFACE_MODE_PSGMII:
+ return 5;
case PHY_INTERFACE_MODE_MAX:
WARN_ONCE(1, "PHY_INTERFACE_MODE_MAX isn't a valid interface mode");
return 0;
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -187,6 +187,7 @@ static int phylink_interface_max_speed(p
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII_ID:
case PHY_INTERFACE_MODE_RGMII:
+ case PHY_INTERFACE_MODE_PSGMII:
case PHY_INTERFACE_MODE_QSGMII:
case PHY_INTERFACE_MODE_QUSGMII:
case PHY_INTERFACE_MODE_SGMII:
@@ -448,6 +449,7 @@ unsigned long phylink_get_capabilities(p
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII_ID:
case PHY_INTERFACE_MODE_RGMII:
+ case PHY_INTERFACE_MODE_PSGMII:
case PHY_INTERFACE_MODE_QSGMII:
case PHY_INTERFACE_MODE_QUSGMII:
case PHY_INTERFACE_MODE_SGMII:
@@ -814,6 +816,7 @@ static int phylink_parse_mode(struct phy
switch (pl->link_config.interface) {
case PHY_INTERFACE_MODE_SGMII:
+ case PHY_INTERFACE_MODE_PSGMII:
case PHY_INTERFACE_MODE_QSGMII:
case PHY_INTERFACE_MODE_QUSGMII:
case PHY_INTERFACE_MODE_RGMII:
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -103,6 +103,7 @@ extern const int phy_10gbit_features_arr
* @PHY_INTERFACE_MODE_XGMII: 10 gigabit media-independent interface
* @PHY_INTERFACE_MODE_XLGMII:40 gigabit media-independent interface
* @PHY_INTERFACE_MODE_MOCA: Multimedia over Coax
+ * @PHY_INTERFACE_MODE_PSGMII: Penta SGMII
* @PHY_INTERFACE_MODE_QSGMII: Quad SGMII
* @PHY_INTERFACE_MODE_TRGMII: Turbo RGMII
* @PHY_INTERFACE_MODE_100BASEX: 100 BaseX
@@ -140,6 +141,7 @@ typedef enum {
PHY_INTERFACE_MODE_XGMII,
PHY_INTERFACE_MODE_XLGMII,
PHY_INTERFACE_MODE_MOCA,
+ PHY_INTERFACE_MODE_PSGMII,
PHY_INTERFACE_MODE_QSGMII,
PHY_INTERFACE_MODE_TRGMII,
PHY_INTERFACE_MODE_100BASEX,
@@ -247,6 +249,8 @@ static inline const char *phy_modes(phy_
return "xlgmii";
case PHY_INTERFACE_MODE_MOCA:
return "moca";
+ case PHY_INTERFACE_MODE_PSGMII:
+ return "psgmii";
case PHY_INTERFACE_MODE_QSGMII:
return "qsgmii";
case PHY_INTERFACE_MODE_TRGMII:

32
target/linux/generic/backport-6.1/705-v6.4-net-phy-at803x-Replace-of_gpio.h-with-what-indeed-is.patch
View File

@@ -1,32 +0,0 @@
From a593a2fcfdfb92cfd0ffc54bc81b07e6bfaaaf46 Mon Sep 17 00:00:00 2001
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Thu, 16 Mar 2023 14:08:26 +0200
Subject: [PATCH] net: phy: at803x: Replace of_gpio.h with what indeed is used
of_gpio.h in this driver is solely used as a proxy to other headers.
This is incorrect usage of the of_gpio.h. Replace it .h with what
indeed is used in the code.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -13,12 +13,11 @@
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool_netlink.h>
-#include <linux/of_gpio.h>
#include <linux/bitfield.h>
-#include <linux/gpio/consumer.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/consumer.h>
+#include <linux/of.h>
#include <linux/phylink.h>
#include <linux/sfp.h>
#include <dt-bindings/net/qca-ar803x.h>

70
target/linux/generic/backport-6.1/706-v6.6-01-net-phy-at803x-support-qca8081-genphy_c45_pma_read_a.patch
View File

@@ -1,70 +0,0 @@
From 8b8bc13d89a7d23d14b0e041c73f037c9db997b1 Mon Sep 17 00:00:00 2001
From: Luo Jie <quic_luoj@quicinc.com>
Date: Sun, 16 Jul 2023 16:49:19 +0800
Subject: [PATCH 1/6] net: phy: at803x: support qca8081
genphy_c45_pma_read_abilities
qca8081 PHY supports to use genphy_c45_pma_read_abilities for
getting the PHY features supported except for the autoneg ability
but autoneg ability exists in MDIO_STAT1 instead of MMD7.1, add it
manually after calling genphy_c45_pma_read_abilities.
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 28 ++++++++++++++++++----------
1 file changed, 18 insertions(+), 10 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -902,15 +902,6 @@ static int at803x_get_features(struct ph
if (err)
return err;
- if (phydev->drv->phy_id == QCA8081_PHY_ID) {
- err = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_NG_EXTABLE);
- if (err < 0)
- return err;
-
- linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->supported,
- err & MDIO_PMA_NG_EXTABLE_2_5GBT);
- }
-
if (phydev->drv->phy_id != ATH8031_PHY_ID)
return 0;
@@ -1996,6 +1987,23 @@ static int qca808x_cable_test_get_status
return 0;
}
+static int qca808x_get_features(struct phy_device *phydev)
+{
+ int ret;
+
+ ret = genphy_c45_pma_read_abilities(phydev);
+ if (ret)
+ return ret;
+
+ /* The autoneg ability is not existed in bit3 of MMD7.1,
+ * but it is supported by qca808x PHY, so we add it here
+ * manually.
+ */
+ linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported);
+
+ return 0;
+}
+
static struct phy_driver at803x_driver[] = {
{
/* Qualcomm Atheros AR8035 */
@@ -2163,7 +2171,7 @@ static struct phy_driver at803x_driver[]
.set_tunable = at803x_set_tunable,
.set_wol = at803x_set_wol,
.get_wol = at803x_get_wol,
- .get_features = at803x_get_features,
+ .get_features = qca808x_get_features,
.config_aneg = at803x_config_aneg,
.suspend = genphy_suspend,
.resume = genphy_resume,

73
target/linux/generic/backport-6.1/706-v6.6-02-net-phy-at803x-merge-qca8081-slave-seed-function.patch
View File

@@ -1,73 +0,0 @@
From f3db55ae860a82e1224a909072783ef850e5d228 Mon Sep 17 00:00:00 2001
From: Luo Jie <quic_luoj@quicinc.com>
Date: Sun, 16 Jul 2023 16:49:20 +0800
Subject: [PATCH 2/6] net: phy: at803x: merge qca8081 slave seed function
merge the seed enablement and seed value configuration into
one function, since the random seed value is needed to be
configured when the seed is enabled.
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 29 +++++++++--------------------
1 file changed, 9 insertions(+), 20 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1730,24 +1730,19 @@ static int qca808x_phy_fast_retrain_conf
return 0;
}
-static int qca808x_phy_ms_random_seed_set(struct phy_device *phydev)
-{
- u16 seed_value = prandom_u32_max(QCA808X_MASTER_SLAVE_SEED_RANGE);
-
- return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_LOCAL_SEED,
- QCA808X_MASTER_SLAVE_SEED_CFG,
- FIELD_PREP(QCA808X_MASTER_SLAVE_SEED_CFG, seed_value));
-}
-
static int qca808x_phy_ms_seed_enable(struct phy_device *phydev, bool enable)
{
- u16 seed_enable = 0;
+ u16 seed_value;
- if (enable)
- seed_enable = QCA808X_MASTER_SLAVE_SEED_ENABLE;
+ if (!enable)
+ return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_LOCAL_SEED,
+ QCA808X_MASTER_SLAVE_SEED_ENABLE, 0);
+ seed_value = prandom_u32_max(QCA808X_MASTER_SLAVE_SEED_RANGE);
return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_LOCAL_SEED,
- QCA808X_MASTER_SLAVE_SEED_ENABLE, seed_enable);
+ QCA808X_MASTER_SLAVE_SEED_CFG | QCA808X_MASTER_SLAVE_SEED_ENABLE,
+ FIELD_PREP(QCA808X_MASTER_SLAVE_SEED_CFG, seed_value) |
+ QCA808X_MASTER_SLAVE_SEED_ENABLE);
}
static int qca808x_config_init(struct phy_device *phydev)
@@ -1771,12 +1766,7 @@ static int qca808x_config_init(struct ph
if (ret)
return ret;
- /* Configure lower ramdom seed to make phy linked as slave mode */
- ret = qca808x_phy_ms_random_seed_set(phydev);
- if (ret)
- return ret;
-
- /* Enable seed */
+ /* Enable seed and configure lower ramdom seed to make phy linked as slave mode */
ret = qca808x_phy_ms_seed_enable(phydev, true);
if (ret)
return ret;
@@ -1821,7 +1811,6 @@ static int qca808x_read_status(struct ph
if (phydev->master_slave_state == MASTER_SLAVE_STATE_ERR) {
qca808x_phy_ms_seed_enable(phydev, false);
} else {
- qca808x_phy_ms_random_seed_set(phydev);
qca808x_phy_ms_seed_enable(phydev, true);
}
}

76
target/linux/generic/backport-6.1/706-v6.6-03-net-phy-at803x-enable-qca8081-slave-seed-conditional.patch
View File

@@ -1,76 +0,0 @@
From 7cc3209558002d95c0d45a1276ba4f5f741eec42 Mon Sep 17 00:00:00 2001
From: Luo Jie <quic_luoj@quicinc.com>
Date: Sun, 16 Jul 2023 16:49:21 +0800
Subject: [PATCH 3/6] net: phy: at803x: enable qca8081 slave seed conditionally
qca8081 is the single port PHY, the slave prefer mode is used
by default.
if the phy master perfer mode is configured, the slave seed
configuration should not be enabled, since the slave seed
enablement is for making PHY linked as slave mode easily.
disable slave seed if the master mode is preferred.
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 25 ++++++++++++++++++++-----
1 file changed, 20 insertions(+), 5 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1745,6 +1745,12 @@ static int qca808x_phy_ms_seed_enable(st
QCA808X_MASTER_SLAVE_SEED_ENABLE);
}
+static bool qca808x_is_prefer_master(struct phy_device *phydev)
+{
+ return (phydev->master_slave_get == MASTER_SLAVE_CFG_MASTER_FORCE) ||
+ (phydev->master_slave_get == MASTER_SLAVE_CFG_MASTER_PREFERRED);
+}
+
static int qca808x_config_init(struct phy_device *phydev)
{
int ret;
@@ -1766,11 +1772,17 @@ static int qca808x_config_init(struct ph
if (ret)
return ret;
- /* Enable seed and configure lower ramdom seed to make phy linked as slave mode */
- ret = qca808x_phy_ms_seed_enable(phydev, true);
- if (ret)
+ ret = genphy_read_master_slave(phydev);
+ if (ret < 0)
return ret;
+ if (!qca808x_is_prefer_master(phydev)) {
+ /* Enable seed and configure lower ramdom seed to make phy linked as slave mode */
+ ret = qca808x_phy_ms_seed_enable(phydev, true);
+ if (ret)
+ return ret;
+ }
+
/* Configure adc threshold as 100mv for the link 10M */
return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_ADC_THRESHOLD,
QCA808X_ADC_THRESHOLD_MASK, QCA808X_ADC_THRESHOLD_100MV);
@@ -1802,13 +1814,16 @@ static int qca808x_read_status(struct ph
phydev->interface = PHY_INTERFACE_MODE_SGMII;
} else {
/* generate seed as a lower random value to make PHY linked as SLAVE easily,
- * except for master/slave configuration fault detected.
+ * except for master/slave configuration fault detected or the master mode
+ * preferred.
+ *
* the reason for not putting this code into the function link_change_notify is
* the corner case where the link partner is also the qca8081 PHY and the seed
* value is configured as the same value, the link can't be up and no link change
* occurs.
*/
- if (phydev->master_slave_state == MASTER_SLAVE_STATE_ERR) {
+ if (phydev->master_slave_state == MASTER_SLAVE_STATE_ERR ||
+ qca808x_is_prefer_master(phydev)) {
qca808x_phy_ms_seed_enable(phydev, false);
} else {
qca808x_phy_ms_seed_enable(phydev, true);

48
target/linux/generic/backport-6.1/706-v6.6-04-net-phy-at803x-support-qca8081-1G-chip-type.patch
View File

@@ -1,48 +0,0 @@
From fea7cfb83d1a2782e39cd101dd44ed2548539de5 Mon Sep 17 00:00:00 2001
From: Luo Jie <quic_luoj@quicinc.com>
Date: Sun, 16 Jul 2023 16:49:22 +0800
Subject: [PATCH 4/6] net: phy: at803x: support qca8081 1G chip type
The qca8081 1G chip version does not support 2.5 capability, which
is distinguished from qca8081 2.5G chip according to the bit0 of
register mmd7.0x901d, the 1G version chip also has the same PHY ID
as the normal qca8081 2.5G chip.
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -272,6 +272,10 @@
#define QCA808X_CDT_STATUS_STAT_OPEN 2
#define QCA808X_CDT_STATUS_STAT_SHORT 3
+/* QCA808X 1G chip type */
+#define QCA808X_PHY_MMD7_CHIP_TYPE 0x901d
+#define QCA808X_PHY_CHIP_TYPE_1G BIT(0)
+
MODULE_DESCRIPTION("Qualcomm Atheros AR803x and QCA808X PHY driver");
MODULE_AUTHOR("Matus Ujhelyi");
MODULE_LICENSE("GPL");
@@ -2005,6 +2009,17 @@ static int qca808x_get_features(struct p
*/
linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported);
+ /* As for the qca8081 1G version chip, the 2500baseT ability is also
+ * existed in the bit0 of MMD1.21, we need to remove it manually if
+ * it is the qca8081 1G chip according to the bit0 of MMD7.0x901d.
+ */
+ ret = phy_read_mmd(phydev, MDIO_MMD_AN, QCA808X_PHY_MMD7_CHIP_TYPE);
+ if (ret < 0)
+ return ret;
+
+ if (QCA808X_PHY_CHIP_TYPE_1G & ret)
+ linkmode_clear_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->supported);
+
return 0;
}

98
target/linux/generic/backport-6.1/706-v6.6-05-net-phy-at803x-remove-qca8081-1G-fast-retrain-and-sl.patch
View File

@@ -1,98 +0,0 @@
From df9401ff3e6eeaa42bfb06761967f1b71f5afce7 Mon Sep 17 00:00:00 2001
From: Luo Jie <quic_luoj@quicinc.com>
Date: Sun, 16 Jul 2023 16:49:23 +0800
Subject: [PATCH 5/6] net: phy: at803x: remove qca8081 1G fast retrain and
slave seed config
The fast retrain and slave seed configs are only applicable when the 2.5G
ability is supported.
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 50 +++++++++++++++++++++++++---------------
1 file changed, 32 insertions(+), 18 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1755,6 +1755,11 @@ static bool qca808x_is_prefer_master(str
(phydev->master_slave_get == MASTER_SLAVE_CFG_MASTER_PREFERRED);
}
+static bool qca808x_has_fast_retrain_or_slave_seed(struct phy_device *phydev)
+{
+ return linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->supported);
+}
+
static int qca808x_config_init(struct phy_device *phydev)
{
int ret;
@@ -1771,20 +1776,24 @@ static int qca808x_config_init(struct ph
if (ret)
return ret;
- /* Config the fast retrain for the link 2500M */
- ret = qca808x_phy_fast_retrain_config(phydev);
- if (ret)
- return ret;
-
- ret = genphy_read_master_slave(phydev);
- if (ret < 0)
- return ret;
-
- if (!qca808x_is_prefer_master(phydev)) {
- /* Enable seed and configure lower ramdom seed to make phy linked as slave mode */
- ret = qca808x_phy_ms_seed_enable(phydev, true);
+ if (qca808x_has_fast_retrain_or_slave_seed(phydev)) {
+ /* Config the fast retrain for the link 2500M */
+ ret = qca808x_phy_fast_retrain_config(phydev);
if (ret)
return ret;
+
+ ret = genphy_read_master_slave(phydev);
+ if (ret < 0)
+ return ret;
+
+ if (!qca808x_is_prefer_master(phydev)) {
+ /* Enable seed and configure lower ramdom seed to make phy
+ * linked as slave mode.
+ */
+ ret = qca808x_phy_ms_seed_enable(phydev, true);
+ if (ret)
+ return ret;
+ }
}
/* Configure adc threshold as 100mv for the link 10M */
@@ -1826,11 +1835,13 @@ static int qca808x_read_status(struct ph
* value is configured as the same value, the link can't be up and no link change
* occurs.
*/
- if (phydev->master_slave_state == MASTER_SLAVE_STATE_ERR ||
- qca808x_is_prefer_master(phydev)) {
- qca808x_phy_ms_seed_enable(phydev, false);
- } else {
- qca808x_phy_ms_seed_enable(phydev, true);
+ if (qca808x_has_fast_retrain_or_slave_seed(phydev)) {
+ if (phydev->master_slave_state == MASTER_SLAVE_STATE_ERR ||
+ qca808x_is_prefer_master(phydev)) {
+ qca808x_phy_ms_seed_enable(phydev, false);
+ } else {
+ qca808x_phy_ms_seed_enable(phydev, true);
+ }
}
}
@@ -1845,7 +1856,10 @@ static int qca808x_soft_reset(struct phy
if (ret < 0)
return ret;
- return qca808x_phy_ms_seed_enable(phydev, true);
+ if (qca808x_has_fast_retrain_or_slave_seed(phydev))
+ ret = qca808x_phy_ms_seed_enable(phydev, true);
+
+ return ret;
}
static bool qca808x_cdt_fault_length_valid(int cdt_code)

55
target/linux/generic/backport-6.1/706-v6.6-06-net-phy-at803x-add-qca8081-fifo-reset-on-the-link-ch.patch
View File

@@ -1,55 +0,0 @@
From 723970affdd8766fa0d91cd34bf2ffc861538b5f Mon Sep 17 00:00:00 2001
From: Luo Jie <quic_luoj@quicinc.com>
Date: Sun, 16 Jul 2023 16:49:24 +0800
Subject: [PATCH 6/6] net: phy: at803x: add qca8081 fifo reset on the link
changed
The qca8081 sgmii fifo needs to be reset on link down and
released on the link up in case of any abnormal issue
such as the packet blocked on the PHY.
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -276,6 +276,9 @@
#define QCA808X_PHY_MMD7_CHIP_TYPE 0x901d
#define QCA808X_PHY_CHIP_TYPE_1G BIT(0)
+#define QCA8081_PHY_SERDES_MMD1_FIFO_CTRL 0x9072
+#define QCA8081_PHY_FIFO_RSTN BIT(11)
+
MODULE_DESCRIPTION("Qualcomm Atheros AR803x and QCA808X PHY driver");
MODULE_AUTHOR("Matus Ujhelyi");
MODULE_LICENSE("GPL");
@@ -2037,6 +2040,16 @@ static int qca808x_get_features(struct p
return 0;
}
+static void qca808x_link_change_notify(struct phy_device *phydev)
+{
+ /* Assert interface sgmii fifo on link down, deassert it on link up,
+ * the interface device address is always phy address added by 1.
+ */
+ mdiobus_c45_modify_changed(phydev->mdio.bus, phydev->mdio.addr + 1,
+ MDIO_MMD_PMAPMD, QCA8081_PHY_SERDES_MMD1_FIFO_CTRL,
+ QCA8081_PHY_FIFO_RSTN, phydev->link ? QCA8081_PHY_FIFO_RSTN : 0);
+}
+
static struct phy_driver at803x_driver[] = {
{
/* Qualcomm Atheros AR8035 */
@@ -2213,6 +2226,7 @@ static struct phy_driver at803x_driver[]
.soft_reset = qca808x_soft_reset,
.cable_test_start = qca808x_cable_test_start,
.cable_test_get_status = qca808x_cable_test_get_status,
+ .link_change_notify = qca808x_link_change_notify,
}, };
module_phy_driver(at803x_driver);

69
target/linux/generic/backport-6.1/707-v6.8-02-net-phy-at803x-move-disable-WOL-to-specific-at8031-p.patch
View File

@@ -1,69 +0,0 @@
From 6a3b8c573b5a152a6aa7a0b54c5e18b84c6ba6f5 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 8 Dec 2023 15:51:49 +0100
Subject: [PATCH 02/13] net: phy: at803x: move disable WOL to specific at8031
probe
Move the WOL disable call to specific at8031 probe to make at803x_probe
more generic and drop extra check for PHY ID.
Keep the same previous behaviour by first calling at803x_probe and then
disabling WOL.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 27 +++++++++++++++++----------
1 file changed, 17 insertions(+), 10 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -886,15 +886,6 @@ static int at803x_probe(struct phy_devic
priv->is_fiber = true;
break;
}
-
- /* Disable WoL in 1588 register which is enabled
- * by default
- */
- ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
- AT803X_PHY_MMD3_WOL_CTRL,
- AT803X_WOL_EN, 0);
- if (ret)
- return ret;
}
return 0;
@@ -1591,6 +1582,22 @@ static int at803x_cable_test_start(struc
return 0;
}
+static int at8031_probe(struct phy_device *phydev)
+{
+ int ret;
+
+ ret = at803x_probe(phydev);
+ if (ret)
+ return ret;
+
+ /* Disable WoL in 1588 register which is enabled
+ * by default
+ */
+ return phy_modify_mmd(phydev, MDIO_MMD_PCS,
+ AT803X_PHY_MMD3_WOL_CTRL,
+ AT803X_WOL_EN, 0);
+}
+
static int qca83xx_config_init(struct phy_device *phydev)
{
u8 switch_revision;
@@ -2092,7 +2099,7 @@ static struct phy_driver at803x_driver[]
PHY_ID_MATCH_EXACT(ATH8031_PHY_ID),
.name = "Qualcomm Atheros AR8031/AR8033",
.flags = PHY_POLL_CABLE_TEST,
- .probe = at803x_probe,
+ .probe = at8031_probe,
.config_init = at803x_config_init,
.config_aneg = at803x_config_aneg,
.soft_reset = genphy_soft_reset,

129
target/linux/generic/backport-6.1/707-v6.8-03-net-phy-at803x-raname-hw_stats-functions-to-qca83xx-.patch
View File

@@ -1,129 +0,0 @@
From 07b1ad83b9ed6db1735ba10baf67b7a565ac0cef Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 8 Dec 2023 15:51:50 +0100
Subject: [PATCH 03/13] net: phy: at803x: raname hw_stats functions to qca83xx
specific name
The function and the struct related to hw_stats were specific to qca83xx
PHY but were called following the convention in the driver of calling
everything with at803x prefix.
To better organize the code, rename these function a more specific name
to better describe that they are specific to 83xx PHY family.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 44 ++++++++++++++++++++--------------------
1 file changed, 22 insertions(+), 22 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -295,7 +295,7 @@ struct at803x_hw_stat {
enum stat_access_type access_type;
};
-static struct at803x_hw_stat at803x_hw_stats[] = {
+static struct at803x_hw_stat qca83xx_hw_stats[] = {
{ "phy_idle_errors", 0xa, GENMASK(7, 0), PHY},
{ "phy_receive_errors", 0x15, GENMASK(15, 0), PHY},
{ "eee_wake_errors", 0x16, GENMASK(15, 0), MMD},
@@ -311,7 +311,7 @@ struct at803x_priv {
bool is_1000basex;
struct regulator_dev *vddio_rdev;
struct regulator_dev *vddh_rdev;
- u64 stats[ARRAY_SIZE(at803x_hw_stats)];
+ u64 stats[ARRAY_SIZE(qca83xx_hw_stats)];
};
struct at803x_context {
@@ -529,24 +529,24 @@ static void at803x_get_wol(struct phy_de
wol->wolopts |= WAKE_MAGIC;
}
-static int at803x_get_sset_count(struct phy_device *phydev)
+static int qca83xx_get_sset_count(struct phy_device *phydev)
{
- return ARRAY_SIZE(at803x_hw_stats);
+ return ARRAY_SIZE(qca83xx_hw_stats);
}
-static void at803x_get_strings(struct phy_device *phydev, u8 *data)
+static void qca83xx_get_strings(struct phy_device *phydev, u8 *data)
{
int i;
- for (i = 0; i < ARRAY_SIZE(at803x_hw_stats); i++) {
+ for (i = 0; i < ARRAY_SIZE(qca83xx_hw_stats); i++) {
strscpy(data + i * ETH_GSTRING_LEN,
- at803x_hw_stats[i].string, ETH_GSTRING_LEN);
+ qca83xx_hw_stats[i].string, ETH_GSTRING_LEN);
}
}
-static u64 at803x_get_stat(struct phy_device *phydev, int i)
+static u64 qca83xx_get_stat(struct phy_device *phydev, int i)
{
- struct at803x_hw_stat stat = at803x_hw_stats[i];
+ struct at803x_hw_stat stat = qca83xx_hw_stats[i];
struct at803x_priv *priv = phydev->priv;
int val;
u64 ret;
@@ -567,13 +567,13 @@ static u64 at803x_get_stat(struct phy_de
return ret;
}
-static void at803x_get_stats(struct phy_device *phydev,
- struct ethtool_stats *stats, u64 *data)
+static void qca83xx_get_stats(struct phy_device *phydev,
+ struct ethtool_stats *stats, u64 *data)
{
int i;
- for (i = 0; i < ARRAY_SIZE(at803x_hw_stats); i++)
- data[i] = at803x_get_stat(phydev, i);
+ for (i = 0; i < ARRAY_SIZE(qca83xx_hw_stats); i++)
+ data[i] = qca83xx_get_stat(phydev, i);
}
static int at803x_suspend(struct phy_device *phydev)
@@ -2175,9 +2175,9 @@ static struct phy_driver at803x_driver[]
.flags = PHY_IS_INTERNAL,
.config_init = qca83xx_config_init,
.soft_reset = genphy_soft_reset,
- .get_sset_count = at803x_get_sset_count,
- .get_strings = at803x_get_strings,
- .get_stats = at803x_get_stats,
+ .get_sset_count = qca83xx_get_sset_count,
+ .get_strings = qca83xx_get_strings,
+ .get_stats = qca83xx_get_stats,
.suspend = qca83xx_suspend,
.resume = qca83xx_resume,
}, {
@@ -2191,9 +2191,9 @@ static struct phy_driver at803x_driver[]
.flags = PHY_IS_INTERNAL,
.config_init = qca83xx_config_init,
.soft_reset = genphy_soft_reset,
- .get_sset_count = at803x_get_sset_count,
- .get_strings = at803x_get_strings,
- .get_stats = at803x_get_stats,
+ .get_sset_count = qca83xx_get_sset_count,
+ .get_strings = qca83xx_get_strings,
+ .get_stats = qca83xx_get_stats,
.suspend = qca83xx_suspend,
.resume = qca83xx_resume,
}, {
@@ -2207,9 +2207,9 @@ static struct phy_driver at803x_driver[]
.flags = PHY_IS_INTERNAL,
.config_init = qca83xx_config_init,
.soft_reset = genphy_soft_reset,
- .get_sset_count = at803x_get_sset_count,
- .get_strings = at803x_get_strings,
- .get_stats = at803x_get_stats,
+ .get_sset_count = qca83xx_get_sset_count,
+ .get_strings = qca83xx_get_strings,
+ .get_stats = qca83xx_get_stats,
.suspend = qca83xx_suspend,
.resume = qca83xx_resume,
}, {

155
target/linux/generic/backport-6.1/707-v6.8-04-net-phy-at803x-move-qca83xx-specific-check-in-dedica.patch
View File

@@ -1,155 +0,0 @@
From d43cff3f82336c0bd965ea552232d9f4ddac71a6 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 8 Dec 2023 15:51:51 +0100
Subject: [PATCH 04/13] net: phy: at803x: move qca83xx specific check in
dedicated functions
Rework qca83xx specific check to dedicated function to tidy things up
and drop useless phy_id check.
Also drop an useless link_change_notify for QCA8337 as it did nothing an
returned early.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 68 ++++++++++++++++++++++------------------
1 file changed, 37 insertions(+), 31 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1623,27 +1623,26 @@ static int qca83xx_config_init(struct ph
break;
}
+ /* Following original QCA sourcecode set port to prefer master */
+ phy_set_bits(phydev, MII_CTRL1000, CTL1000_PREFER_MASTER);
+
+ return 0;
+}
+
+static int qca8327_config_init(struct phy_device *phydev)
+{
/* QCA8327 require DAC amplitude adjustment for 100m set to +6%.
* Disable on init and enable only with 100m speed following
* qca original source code.
*/
- if (phydev->drv->phy_id == QCA8327_A_PHY_ID ||
- phydev->drv->phy_id == QCA8327_B_PHY_ID)
- at803x_debug_reg_mask(phydev, AT803X_DEBUG_ANALOG_TEST_CTRL,
- QCA8327_DEBUG_MANU_CTRL_EN, 0);
+ at803x_debug_reg_mask(phydev, AT803X_DEBUG_ANALOG_TEST_CTRL,
+ QCA8327_DEBUG_MANU_CTRL_EN, 0);
- /* Following original QCA sourcecode set port to prefer master */
- phy_set_bits(phydev, MII_CTRL1000, CTL1000_PREFER_MASTER);
-
- return 0;
+ return qca83xx_config_init(phydev);
}
static void qca83xx_link_change_notify(struct phy_device *phydev)
{
- /* QCA8337 doesn't require DAC Amplitude adjustement */
- if (phydev->drv->phy_id == QCA8337_PHY_ID)
- return;
-
/* Set DAC Amplitude adjustment to +6% for 100m on link running */
if (phydev->state == PHY_RUNNING) {
if (phydev->speed == SPEED_100)
@@ -1686,19 +1685,6 @@ static int qca83xx_resume(struct phy_dev
static int qca83xx_suspend(struct phy_device *phydev)
{
- u16 mask = 0;
-
- /* Only QCA8337 support actual suspend.
- * QCA8327 cause port unreliability when phy suspend
- * is set.
- */
- if (phydev->drv->phy_id == QCA8337_PHY_ID) {
- genphy_suspend(phydev);
- } else {
- mask |= ~(BMCR_SPEED1000 | BMCR_FULLDPLX);
- phy_modify(phydev, MII_BMCR, mask, 0);
- }
-
at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_GREEN,
AT803X_DEBUG_GATE_CLK_IN1000, 0);
@@ -1709,6 +1695,27 @@ static int qca83xx_suspend(struct phy_de
return 0;
}
+static int qca8337_suspend(struct phy_device *phydev)
+{
+ /* Only QCA8337 support actual suspend. */
+ genphy_suspend(phydev);
+
+ return qca83xx_suspend(phydev);
+}
+
+static int qca8327_suspend(struct phy_device *phydev)
+{
+ u16 mask = 0;
+
+ /* QCA8327 cause port unreliability when phy suspend
+ * is set.
+ */
+ mask |= ~(BMCR_SPEED1000 | BMCR_FULLDPLX);
+ phy_modify(phydev, MII_BMCR, mask, 0);
+
+ return qca83xx_suspend(phydev);
+}
+
static int qca808x_phy_fast_retrain_config(struct phy_device *phydev)
{
int ret;
@@ -2170,7 +2177,6 @@ static struct phy_driver at803x_driver[]
.phy_id_mask = QCA8K_PHY_ID_MASK,
.name = "Qualcomm Atheros 8337 internal PHY",
/* PHY_GBIT_FEATURES */
- .link_change_notify = qca83xx_link_change_notify,
.probe = at803x_probe,
.flags = PHY_IS_INTERNAL,
.config_init = qca83xx_config_init,
@@ -2178,7 +2184,7 @@ static struct phy_driver at803x_driver[]
.get_sset_count = qca83xx_get_sset_count,
.get_strings = qca83xx_get_strings,
.get_stats = qca83xx_get_stats,
- .suspend = qca83xx_suspend,
+ .suspend = qca8337_suspend,
.resume = qca83xx_resume,
}, {
/* QCA8327-A from switch QCA8327-AL1A */
@@ -2189,12 +2195,12 @@ static struct phy_driver at803x_driver[]
.link_change_notify = qca83xx_link_change_notify,
.probe = at803x_probe,
.flags = PHY_IS_INTERNAL,
- .config_init = qca83xx_config_init,
+ .config_init = qca8327_config_init,
.soft_reset = genphy_soft_reset,
.get_sset_count = qca83xx_get_sset_count,
.get_strings = qca83xx_get_strings,
.get_stats = qca83xx_get_stats,
- .suspend = qca83xx_suspend,
+ .suspend = qca8327_suspend,
.resume = qca83xx_resume,
}, {
/* QCA8327-B from switch QCA8327-BL1A */
@@ -2205,12 +2211,12 @@ static struct phy_driver at803x_driver[]
.link_change_notify = qca83xx_link_change_notify,
.probe = at803x_probe,
.flags = PHY_IS_INTERNAL,
- .config_init = qca83xx_config_init,
+ .config_init = qca8327_config_init,
.soft_reset = genphy_soft_reset,
.get_sset_count = qca83xx_get_sset_count,
.get_strings = qca83xx_get_strings,
.get_stats = qca83xx_get_stats,
- .suspend = qca83xx_suspend,
+ .suspend = qca8327_suspend,
.resume = qca83xx_resume,
}, {
/* Qualcomm QCA8081 */

94
target/linux/generic/backport-6.1/707-v6.8-05-net-phy-at803x-move-specific-DT-option-for-at8031-to.patch
View File

@@ -1,94 +0,0 @@
From 900eef75cc5018e149c52fe305c9c3fe424c52a7 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 8 Dec 2023 15:51:52 +0100
Subject: [PATCH 05/13] net: phy: at803x: move specific DT option for at8031 to
specific probe
Move specific DT options for at8031 to specific probe to tidy things up
and make at803x_parse_dt more generic.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 55 ++++++++++++++++++++++------------------
1 file changed, 31 insertions(+), 24 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -825,30 +825,6 @@ static int at803x_parse_dt(struct phy_de
}
}
- /* Only supported on AR8031/AR8033, the AR8030/AR8035 use strapping
- * options.
- */
- if (phydev->drv->phy_id == ATH8031_PHY_ID) {
- if (of_property_read_bool(node, "qca,keep-pll-enabled"))
- priv->flags |= AT803X_KEEP_PLL_ENABLED;
-
- ret = at8031_register_regulators(phydev);
- if (ret < 0)
- return ret;
-
- ret = devm_regulator_get_enable_optional(&phydev->mdio.dev,
- "vddio");
- if (ret) {
- phydev_err(phydev, "failed to get VDDIO regulator\n");
- return ret;
- }
-
- /* Only AR8031/8033 support 1000Base-X for SFP modules */
- ret = phy_sfp_probe(phydev, &at803x_sfp_ops);
- if (ret < 0)
- return ret;
- }
-
return 0;
}
@@ -1582,6 +1558,30 @@ static int at803x_cable_test_start(struc
return 0;
}
+static int at8031_parse_dt(struct phy_device *phydev)
+{
+ struct device_node *node = phydev->mdio.dev.of_node;
+ struct at803x_priv *priv = phydev->priv;
+ int ret;
+
+ if (of_property_read_bool(node, "qca,keep-pll-enabled"))
+ priv->flags |= AT803X_KEEP_PLL_ENABLED;
+
+ ret = at8031_register_regulators(phydev);
+ if (ret < 0)
+ return ret;
+
+ ret = devm_regulator_get_enable_optional(&phydev->mdio.dev,
+ "vddio");
+ if (ret) {
+ phydev_err(phydev, "failed to get VDDIO regulator\n");
+ return ret;
+ }
+
+ /* Only AR8031/8033 support 1000Base-X for SFP modules */
+ return phy_sfp_probe(phydev, &at803x_sfp_ops);
+}
+
static int at8031_probe(struct phy_device *phydev)
{
int ret;
@@ -1590,6 +1590,13 @@ static int at8031_probe(struct phy_devic
if (ret)
return ret;
+ /* Only supported on AR8031/AR8033, the AR8030/AR8035 use strapping
+ * options.
+ */
+ ret = at8031_parse_dt(phydev);
+ if (ret)
+ return ret;
+
/* Disable WoL in 1588 register which is enabled
* by default
*/

78
target/linux/generic/backport-6.1/707-v6.8-06-net-phy-at803x-move-specific-at8031-probe-mode-check.patch
View File

@@ -1,78 +0,0 @@
From 25d2ba94005fac18fe68878cddff59a67e115554 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 8 Dec 2023 15:51:53 +0100
Subject: [PATCH 06/13] net: phy: at803x: move specific at8031 probe mode check
to dedicated probe
Move specific at8031 probe mode check to dedicated probe to make
at803x_probe more generic and keep code tidy.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 39 +++++++++++++++++++--------------------
1 file changed, 19 insertions(+), 20 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -844,26 +844,6 @@ static int at803x_probe(struct phy_devic
if (ret)
return ret;
- if (phydev->drv->phy_id == ATH8031_PHY_ID) {
- int ccr = phy_read(phydev, AT803X_REG_CHIP_CONFIG);
- int mode_cfg;
-
- if (ccr < 0)
- return ccr;
- mode_cfg = ccr & AT803X_MODE_CFG_MASK;
-
- switch (mode_cfg) {
- case AT803X_MODE_CFG_BX1000_RGMII_50OHM:
- case AT803X_MODE_CFG_BX1000_RGMII_75OHM:
- priv->is_1000basex = true;
- fallthrough;
- case AT803X_MODE_CFG_FX100_RGMII_50OHM:
- case AT803X_MODE_CFG_FX100_RGMII_75OHM:
- priv->is_fiber = true;
- break;
- }
- }
-
return 0;
}
@@ -1584,6 +1564,9 @@ static int at8031_parse_dt(struct phy_de
static int at8031_probe(struct phy_device *phydev)
{
+ struct at803x_priv *priv = phydev->priv;
+ int mode_cfg;
+ int ccr;
int ret;
ret = at803x_probe(phydev);
@@ -1597,6 +1580,22 @@ static int at8031_probe(struct phy_devic
if (ret)
return ret;
+ ccr = phy_read(phydev, AT803X_REG_CHIP_CONFIG);
+ if (ccr < 0)
+ return ccr;
+ mode_cfg = ccr & AT803X_MODE_CFG_MASK;
+
+ switch (mode_cfg) {
+ case AT803X_MODE_CFG_BX1000_RGMII_50OHM:
+ case AT803X_MODE_CFG_BX1000_RGMII_75OHM:
+ priv->is_1000basex = true;
+ fallthrough;
+ case AT803X_MODE_CFG_FX100_RGMII_50OHM:
+ case AT803X_MODE_CFG_FX100_RGMII_75OHM:
+ priv->is_fiber = true;
+ break;
+ }
+
/* Disable WoL in 1588 register which is enabled
* by default
*/

86
target/linux/generic/backport-6.1/707-v6.8-07-net-phy-at803x-move-specific-at8031-config_init-to-d.patch
View File

@@ -1,86 +0,0 @@
From 3ae3bc426eaf57ca8f53d75777d9a5ef779bc7b7 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 8 Dec 2023 15:51:54 +0100
Subject: [PATCH 07/13] net: phy: at803x: move specific at8031 config_init to
dedicated function
Move specific at8031 config_init to dedicated function to make
at803x_config_init more generic and tidy things up.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 45 ++++++++++++++++++++++------------------
1 file changed, 25 insertions(+), 20 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -951,27 +951,8 @@ static int at803x_hibernation_mode_confi
static int at803x_config_init(struct phy_device *phydev)
{
- struct at803x_priv *priv = phydev->priv;
int ret;
- if (phydev->drv->phy_id == ATH8031_PHY_ID) {
- /* Some bootloaders leave the fiber page selected.
- * Switch to the appropriate page (fiber or copper), as otherwise we
- * read the PHY capabilities from the wrong page.
- */
- phy_lock_mdio_bus(phydev);
- ret = at803x_write_page(phydev,
- priv->is_fiber ? AT803X_PAGE_FIBER :
- AT803X_PAGE_COPPER);
- phy_unlock_mdio_bus(phydev);
- if (ret)
- return ret;
-
- ret = at8031_pll_config(phydev);
- if (ret < 0)
- return ret;
- }
-
/* The RX and TX delay default is:
* after HW reset: RX delay enabled and TX delay disabled
* after SW reset: RX delay enabled, while TX delay retains the
@@ -1604,6 +1585,30 @@ static int at8031_probe(struct phy_devic
AT803X_WOL_EN, 0);
}
+static int at8031_config_init(struct phy_device *phydev)
+{
+ struct at803x_priv *priv = phydev->priv;
+ int ret;
+
+ /* Some bootloaders leave the fiber page selected.
+ * Switch to the appropriate page (fiber or copper), as otherwise we
+ * read the PHY capabilities from the wrong page.
+ */
+ phy_lock_mdio_bus(phydev);
+ ret = at803x_write_page(phydev,
+ priv->is_fiber ? AT803X_PAGE_FIBER :
+ AT803X_PAGE_COPPER);
+ phy_unlock_mdio_bus(phydev);
+ if (ret)
+ return ret;
+
+ ret = at8031_pll_config(phydev);
+ if (ret < 0)
+ return ret;
+
+ return at803x_config_init(phydev);
+}
+
static int qca83xx_config_init(struct phy_device *phydev)
{
u8 switch_revision;
@@ -2113,7 +2118,7 @@ static struct phy_driver at803x_driver[]
.name = "Qualcomm Atheros AR8031/AR8033",
.flags = PHY_POLL_CABLE_TEST,
.probe = at8031_probe,
- .config_init = at803x_config_init,
+ .config_init = at8031_config_init,
.config_aneg = at803x_config_aneg,
.soft_reset = genphy_soft_reset,
.set_wol = at803x_set_wol,

92
target/linux/generic/backport-6.1/707-v6.8-08-net-phy-at803x-move-specific-at8031-WOL-bits-to-dedi.patch
View File

@@ -1,92 +0,0 @@
From 27b89c9dc1b0393090d68d651b82f30ad2696baa Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 8 Dec 2023 15:51:55 +0100
Subject: [PATCH 08/13] net: phy: at803x: move specific at8031 WOL bits to
dedicated function
Move specific at8031 WOL enable/disable to dedicated function to make
at803x_set_wol more generic.
This is needed in preparation for PHY driver split as qca8081 share the
same function to toggle WOL settings.
In this new implementation WOL module in at8031 is enabled after the
generic interrupt is setup. This should not cause any problem as the
WOL_INT has a separate implementation and only relay on MAC bits.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 42 ++++++++++++++++++++++++----------------
1 file changed, 25 insertions(+), 17 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -466,27 +466,11 @@ static int at803x_set_wol(struct phy_dev
phy_write_mmd(phydev, MDIO_MMD_PCS, offsets[i],
mac[(i * 2) + 1] | (mac[(i * 2)] << 8));
- /* Enable WOL function for 1588 */
- if (phydev->drv->phy_id == ATH8031_PHY_ID) {
- ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
- AT803X_PHY_MMD3_WOL_CTRL,
- 0, AT803X_WOL_EN);
- if (ret)
- return ret;
- }
/* Enable WOL interrupt */
ret = phy_modify(phydev, AT803X_INTR_ENABLE, 0, AT803X_INTR_ENABLE_WOL);
if (ret)
return ret;
} else {
- /* Disable WoL function for 1588 */
- if (phydev->drv->phy_id == ATH8031_PHY_ID) {
- ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
- AT803X_PHY_MMD3_WOL_CTRL,
- AT803X_WOL_EN, 0);
- if (ret)
- return ret;
- }
/* Disable WOL interrupt */
ret = phy_modify(phydev, AT803X_INTR_ENABLE, AT803X_INTR_ENABLE_WOL, 0);
if (ret)
@@ -1609,6 +1593,30 @@ static int at8031_config_init(struct phy
return at803x_config_init(phydev);
}
+static int at8031_set_wol(struct phy_device *phydev,
+ struct ethtool_wolinfo *wol)
+{
+ int ret;
+
+ /* First setup MAC address and enable WOL interrupt */
+ ret = at803x_set_wol(phydev, wol);
+ if (ret)
+ return ret;
+
+ if (wol->wolopts & WAKE_MAGIC)
+ /* Enable WOL function for 1588 */
+ ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
+ AT803X_PHY_MMD3_WOL_CTRL,
+ 0, AT803X_WOL_EN);
+ else
+ /* Disable WoL function for 1588 */
+ ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
+ AT803X_PHY_MMD3_WOL_CTRL,
+ AT803X_WOL_EN, 0);
+
+ return ret;
+}
+
static int qca83xx_config_init(struct phy_device *phydev)
{
u8 switch_revision;
@@ -2121,7 +2129,7 @@ static struct phy_driver at803x_driver[]
.config_init = at8031_config_init,
.config_aneg = at803x_config_aneg,
.soft_reset = genphy_soft_reset,
- .set_wol = at803x_set_wol,
+ .set_wol = at8031_set_wol,
.get_wol = at803x_get_wol,
.suspend = at803x_suspend,
.resume = at803x_resume,

78
target/linux/generic/backport-6.1/707-v6.8-09-net-phy-at803x-move-specific-at8031-config_intr-to-d.patch
View File

@@ -1,78 +0,0 @@
From 30dd62191d3dd97c08f7f9dc9ce77ffab457e4fb Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 8 Dec 2023 15:51:56 +0100
Subject: [PATCH 09/13] net: phy: at803x: move specific at8031 config_intr to
dedicated function
Move specific at8031 config_intr bits to dedicated function to make
at803x_config_initr more generic.
This is needed in preparation for PHY driver split as qca8081 share the
same function to setup interrupts.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 30 ++++++++++++++++++++++++------
1 file changed, 24 insertions(+), 6 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -990,7 +990,6 @@ static int at803x_ack_interrupt(struct p
static int at803x_config_intr(struct phy_device *phydev)
{
- struct at803x_priv *priv = phydev->priv;
int err;
int value;
@@ -1007,10 +1006,6 @@ static int at803x_config_intr(struct phy
value |= AT803X_INTR_ENABLE_DUPLEX_CHANGED;
value |= AT803X_INTR_ENABLE_LINK_FAIL;
value |= AT803X_INTR_ENABLE_LINK_SUCCESS;
- if (priv->is_fiber) {
- value |= AT803X_INTR_ENABLE_LINK_FAIL_BX;
- value |= AT803X_INTR_ENABLE_LINK_SUCCESS_BX;
- }
err = phy_write(phydev, AT803X_INTR_ENABLE, value);
} else {
@@ -1617,6 +1612,29 @@ static int at8031_set_wol(struct phy_dev
return ret;
}
+static int at8031_config_intr(struct phy_device *phydev)
+{
+ struct at803x_priv *priv = phydev->priv;
+ int err, value = 0;
+
+ if (phydev->interrupts == PHY_INTERRUPT_ENABLED &&
+ priv->is_fiber) {
+ /* Clear any pending interrupts */
+ err = at803x_ack_interrupt(phydev);
+ if (err)
+ return err;
+
+ value |= AT803X_INTR_ENABLE_LINK_FAIL_BX;
+ value |= AT803X_INTR_ENABLE_LINK_SUCCESS_BX;
+
+ err = phy_set_bits(phydev, AT803X_INTR_ENABLE, value);
+ if (err)
+ return err;
+ }
+
+ return at803x_config_intr(phydev);
+}
+
static int qca83xx_config_init(struct phy_device *phydev)
{
u8 switch_revision;
@@ -2137,7 +2155,7 @@ static struct phy_driver at803x_driver[]
.write_page = at803x_write_page,
.get_features = at803x_get_features,
.read_status = at803x_read_status,
- .config_intr = at803x_config_intr,
+ .config_intr = at8031_config_intr,
.handle_interrupt = at803x_handle_interrupt,
.get_tunable = at803x_get_tunable,
.set_tunable = at803x_set_tunable,

78
target/linux/generic/backport-6.1/707-v6.8-10-net-phy-at803x-make-at8031-related-DT-functions-name.patch
View File

@@ -1,78 +0,0 @@
From a5ab9d8e7ae0da8328ac1637a9755311508dc8ab Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 8 Dec 2023 15:51:57 +0100
Subject: [PATCH 10/13] net: phy: at803x: make at8031 related DT functions name
more specific
Rename at8031 related DT function name to a more specific name
referencing they are only related to at8031 and not to the generic
at803x PHY family.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -583,7 +583,7 @@ static int at803x_resume(struct phy_devi
return phy_modify(phydev, MII_BMCR, BMCR_PDOWN | BMCR_ISOLATE, 0);
}
-static int at803x_rgmii_reg_set_voltage_sel(struct regulator_dev *rdev,
+static int at8031_rgmii_reg_set_voltage_sel(struct regulator_dev *rdev,
unsigned int selector)
{
struct phy_device *phydev = rdev_get_drvdata(rdev);
@@ -596,7 +596,7 @@ static int at803x_rgmii_reg_set_voltage_
AT803X_DEBUG_RGMII_1V8, 0);
}
-static int at803x_rgmii_reg_get_voltage_sel(struct regulator_dev *rdev)
+static int at8031_rgmii_reg_get_voltage_sel(struct regulator_dev *rdev)
{
struct phy_device *phydev = rdev_get_drvdata(rdev);
int val;
@@ -610,8 +610,8 @@ static int at803x_rgmii_reg_get_voltage_
static const struct regulator_ops vddio_regulator_ops = {
.list_voltage = regulator_list_voltage_table,
- .set_voltage_sel = at803x_rgmii_reg_set_voltage_sel,
- .get_voltage_sel = at803x_rgmii_reg_get_voltage_sel,
+ .set_voltage_sel = at8031_rgmii_reg_set_voltage_sel,
+ .get_voltage_sel = at8031_rgmii_reg_get_voltage_sel,
};
static const unsigned int vddio_voltage_table[] = {
@@ -666,7 +666,7 @@ static int at8031_register_regulators(st
return 0;
}
-static int at803x_sfp_insert(void *upstream, const struct sfp_eeprom_id *id)
+static int at8031_sfp_insert(void *upstream, const struct sfp_eeprom_id *id)
{
struct phy_device *phydev = upstream;
__ETHTOOL_DECLARE_LINK_MODE_MASK(phy_support);
@@ -710,10 +710,10 @@ static int at803x_sfp_insert(void *upstr
return 0;
}
-static const struct sfp_upstream_ops at803x_sfp_ops = {
+static const struct sfp_upstream_ops at8031_sfp_ops = {
.attach = phy_sfp_attach,
.detach = phy_sfp_detach,
- .module_insert = at803x_sfp_insert,
+ .module_insert = at8031_sfp_insert,
};
static int at803x_parse_dt(struct phy_device *phydev)
@@ -1519,7 +1519,7 @@ static int at8031_parse_dt(struct phy_de
}
/* Only AR8031/8033 support 1000Base-X for SFP modules */
- return phy_sfp_probe(phydev, &at803x_sfp_ops);
+ return phy_sfp_probe(phydev, &at8031_sfp_ops);
}
static int at8031_probe(struct phy_device *phydev)

297
target/linux/generic/backport-6.1/707-v6.8-11-net-phy-at803x-move-at8031-functions-in-dedicated-se.patch
View File

@@ -1,297 +0,0 @@
From f932a6dc8bae0dae9645b5b1b4c65aed8a8acb2a Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 8 Dec 2023 15:51:58 +0100
Subject: [PATCH 11/13] net: phy: at803x: move at8031 functions in dedicated
section
Move at8031 functions in dedicated section with dedicated at8031
parse_dt and probe.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 266 +++++++++++++++++++--------------------
1 file changed, 133 insertions(+), 133 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -583,139 +583,6 @@ static int at803x_resume(struct phy_devi
return phy_modify(phydev, MII_BMCR, BMCR_PDOWN | BMCR_ISOLATE, 0);
}
-static int at8031_rgmii_reg_set_voltage_sel(struct regulator_dev *rdev,
- unsigned int selector)
-{
- struct phy_device *phydev = rdev_get_drvdata(rdev);
-
- if (selector)
- return at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_1F,
- 0, AT803X_DEBUG_RGMII_1V8);
- else
- return at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_1F,
- AT803X_DEBUG_RGMII_1V8, 0);
-}
-
-static int at8031_rgmii_reg_get_voltage_sel(struct regulator_dev *rdev)
-{
- struct phy_device *phydev = rdev_get_drvdata(rdev);
- int val;
-
- val = at803x_debug_reg_read(phydev, AT803X_DEBUG_REG_1F);
- if (val < 0)
- return val;
-
- return (val & AT803X_DEBUG_RGMII_1V8) ? 1 : 0;
-}
-
-static const struct regulator_ops vddio_regulator_ops = {
- .list_voltage = regulator_list_voltage_table,
- .set_voltage_sel = at8031_rgmii_reg_set_voltage_sel,
- .get_voltage_sel = at8031_rgmii_reg_get_voltage_sel,
-};
-
-static const unsigned int vddio_voltage_table[] = {
- 1500000,
- 1800000,
-};
-
-static const struct regulator_desc vddio_desc = {
- .name = "vddio",
- .of_match = of_match_ptr("vddio-regulator"),
- .n_voltages = ARRAY_SIZE(vddio_voltage_table),
- .volt_table = vddio_voltage_table,
- .ops = &vddio_regulator_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
-};
-
-static const struct regulator_ops vddh_regulator_ops = {
-};
-
-static const struct regulator_desc vddh_desc = {
- .name = "vddh",
- .of_match = of_match_ptr("vddh-regulator"),
- .n_voltages = 1,
- .fixed_uV = 2500000,
- .ops = &vddh_regulator_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
-};
-
-static int at8031_register_regulators(struct phy_device *phydev)
-{
- struct at803x_priv *priv = phydev->priv;
- struct device *dev = &phydev->mdio.dev;
- struct regulator_config config = { };
-
- config.dev = dev;
- config.driver_data = phydev;
-
- priv->vddio_rdev = devm_regulator_register(dev, &vddio_desc, &config);
- if (IS_ERR(priv->vddio_rdev)) {
- phydev_err(phydev, "failed to register VDDIO regulator\n");
- return PTR_ERR(priv->vddio_rdev);
- }
-
- priv->vddh_rdev = devm_regulator_register(dev, &vddh_desc, &config);
- if (IS_ERR(priv->vddh_rdev)) {
- phydev_err(phydev, "failed to register VDDH regulator\n");
- return PTR_ERR(priv->vddh_rdev);
- }
-
- return 0;
-}
-
-static int at8031_sfp_insert(void *upstream, const struct sfp_eeprom_id *id)
-{
- struct phy_device *phydev = upstream;
- __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_support);
- __ETHTOOL_DECLARE_LINK_MODE_MASK(sfp_support);
- DECLARE_PHY_INTERFACE_MASK(interfaces);
- phy_interface_t iface;
-
- linkmode_zero(phy_support);
- phylink_set(phy_support, 1000baseX_Full);
- phylink_set(phy_support, 1000baseT_Full);
- phylink_set(phy_support, Autoneg);
- phylink_set(phy_support, Pause);
- phylink_set(phy_support, Asym_Pause);
-
- linkmode_zero(sfp_support);
- sfp_parse_support(phydev->sfp_bus, id, sfp_support, interfaces);
- /* Some modules support 10G modes as well as others we support.
- * Mask out non-supported modes so the correct interface is picked.
- */
- linkmode_and(sfp_support, phy_support, sfp_support);
-
- if (linkmode_empty(sfp_support)) {
- dev_err(&phydev->mdio.dev, "incompatible SFP module inserted\n");
- return -EINVAL;
- }
-
- iface = sfp_select_interface(phydev->sfp_bus, sfp_support);
-
- /* Only 1000Base-X is supported by AR8031/8033 as the downstream SerDes
- * interface for use with SFP modules.
- * However, some copper modules detected as having a preferred SGMII
- * interface do default to and function in 1000Base-X mode, so just
- * print a warning and allow such modules, as they may have some chance
- * of working.
- */
- if (iface == PHY_INTERFACE_MODE_SGMII)
- dev_warn(&phydev->mdio.dev, "module may not function if 1000Base-X not supported\n");
- else if (iface != PHY_INTERFACE_MODE_1000BASEX)
- return -EINVAL;
-
- return 0;
-}
-
-static const struct sfp_upstream_ops at8031_sfp_ops = {
- .attach = phy_sfp_attach,
- .detach = phy_sfp_detach,
- .module_insert = at8031_sfp_insert,
-};
-
static int at803x_parse_dt(struct phy_device *phydev)
{
struct device_node *node = phydev->mdio.dev.of_node;
@@ -1498,6 +1365,139 @@ static int at803x_cable_test_start(struc
return 0;
}
+static int at8031_rgmii_reg_set_voltage_sel(struct regulator_dev *rdev,
+ unsigned int selector)
+{
+ struct phy_device *phydev = rdev_get_drvdata(rdev);
+
+ if (selector)
+ return at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_1F,
+ 0, AT803X_DEBUG_RGMII_1V8);
+ else
+ return at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_1F,
+ AT803X_DEBUG_RGMII_1V8, 0);
+}
+
+static int at8031_rgmii_reg_get_voltage_sel(struct regulator_dev *rdev)
+{
+ struct phy_device *phydev = rdev_get_drvdata(rdev);
+ int val;
+
+ val = at803x_debug_reg_read(phydev, AT803X_DEBUG_REG_1F);
+ if (val < 0)
+ return val;
+
+ return (val & AT803X_DEBUG_RGMII_1V8) ? 1 : 0;
+}
+
+static const struct regulator_ops vddio_regulator_ops = {
+ .list_voltage = regulator_list_voltage_table,
+ .set_voltage_sel = at8031_rgmii_reg_set_voltage_sel,
+ .get_voltage_sel = at8031_rgmii_reg_get_voltage_sel,
+};
+
+static const unsigned int vddio_voltage_table[] = {
+ 1500000,
+ 1800000,
+};
+
+static const struct regulator_desc vddio_desc = {
+ .name = "vddio",
+ .of_match = of_match_ptr("vddio-regulator"),
+ .n_voltages = ARRAY_SIZE(vddio_voltage_table),
+ .volt_table = vddio_voltage_table,
+ .ops = &vddio_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+};
+
+static const struct regulator_ops vddh_regulator_ops = {
+};
+
+static const struct regulator_desc vddh_desc = {
+ .name = "vddh",
+ .of_match = of_match_ptr("vddh-regulator"),
+ .n_voltages = 1,
+ .fixed_uV = 2500000,
+ .ops = &vddh_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+};
+
+static int at8031_register_regulators(struct phy_device *phydev)
+{
+ struct at803x_priv *priv = phydev->priv;
+ struct device *dev = &phydev->mdio.dev;
+ struct regulator_config config = { };
+
+ config.dev = dev;
+ config.driver_data = phydev;
+
+ priv->vddio_rdev = devm_regulator_register(dev, &vddio_desc, &config);
+ if (IS_ERR(priv->vddio_rdev)) {
+ phydev_err(phydev, "failed to register VDDIO regulator\n");
+ return PTR_ERR(priv->vddio_rdev);
+ }
+
+ priv->vddh_rdev = devm_regulator_register(dev, &vddh_desc, &config);
+ if (IS_ERR(priv->vddh_rdev)) {
+ phydev_err(phydev, "failed to register VDDH regulator\n");
+ return PTR_ERR(priv->vddh_rdev);
+ }
+
+ return 0;
+}
+
+static int at8031_sfp_insert(void *upstream, const struct sfp_eeprom_id *id)
+{
+ struct phy_device *phydev = upstream;
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_support);
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(sfp_support);
+ DECLARE_PHY_INTERFACE_MASK(interfaces);
+ phy_interface_t iface;
+
+ linkmode_zero(phy_support);
+ phylink_set(phy_support, 1000baseX_Full);
+ phylink_set(phy_support, 1000baseT_Full);
+ phylink_set(phy_support, Autoneg);
+ phylink_set(phy_support, Pause);
+ phylink_set(phy_support, Asym_Pause);
+
+ linkmode_zero(sfp_support);
+ sfp_parse_support(phydev->sfp_bus, id, sfp_support, interfaces);
+ /* Some modules support 10G modes as well as others we support.
+ * Mask out non-supported modes so the correct interface is picked.
+ */
+ linkmode_and(sfp_support, phy_support, sfp_support);
+
+ if (linkmode_empty(sfp_support)) {
+ dev_err(&phydev->mdio.dev, "incompatible SFP module inserted\n");
+ return -EINVAL;
+ }
+
+ iface = sfp_select_interface(phydev->sfp_bus, sfp_support);
+
+ /* Only 1000Base-X is supported by AR8031/8033 as the downstream SerDes
+ * interface for use with SFP modules.
+ * However, some copper modules detected as having a preferred SGMII
+ * interface do default to and function in 1000Base-X mode, so just
+ * print a warning and allow such modules, as they may have some chance
+ * of working.
+ */
+ if (iface == PHY_INTERFACE_MODE_SGMII)
+ dev_warn(&phydev->mdio.dev, "module may not function if 1000Base-X not supported\n");
+ else if (iface != PHY_INTERFACE_MODE_1000BASEX)
+ return -EINVAL;
+
+ return 0;
+}
+
+static const struct sfp_upstream_ops at8031_sfp_ops = {
+ .attach = phy_sfp_attach,
+ .detach = phy_sfp_detach,
+ .module_insert = at8031_sfp_insert,
+};
+
static int at8031_parse_dt(struct phy_device *phydev)
{
struct device_node *node = phydev->mdio.dev.of_node;

114
target/linux/generic/backport-6.1/707-v6.8-12-net-phy-at803x-move-at8035-specific-DT-parse-to-dedi.patch
View File

@@ -1,114 +0,0 @@
From 21a2802a8365cfa82cc02187c1f95136d85592ad Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 8 Dec 2023 15:51:59 +0100
Subject: [PATCH 12/13] net: phy: at803x: move at8035 specific DT parse to
dedicated probe
Move at8035 specific DT parse for clock out frequency to dedicated probe
to make at803x probe function more generic.
This is to tidy code and no behaviour change are intended.
Detection logic is changed, we check if the clk 25m mask is set and if
it's not zero, we assume the qca,clk-out-frequency property is set.
The property is checked in the generic at803x_parse_dt called by
at803x_probe.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 60 +++++++++++++++++++++++++++-------------
1 file changed, 41 insertions(+), 19 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -638,23 +638,6 @@ static int at803x_parse_dt(struct phy_de
priv->clk_25m_reg |= FIELD_PREP(AT803X_CLK_OUT_MASK, sel);
priv->clk_25m_mask |= AT803X_CLK_OUT_MASK;
-
- /* Fixup for the AR8030/AR8035. This chip has another mask and
- * doesn't support the DSP reference. Eg. the lowest bit of the
- * mask. The upper two bits select the same frequencies. Mask
- * the lowest bit here.
- *
- * Warning:
- * There was no datasheet for the AR8030 available so this is
- * just a guess. But the AR8035 is listed as pin compatible
- * to the AR8030 so there might be a good chance it works on
- * the AR8030 too.
- */
- if (phydev->drv->phy_id == ATH8030_PHY_ID ||
- phydev->drv->phy_id == ATH8035_PHY_ID) {
- priv->clk_25m_reg &= AT8035_CLK_OUT_MASK;
- priv->clk_25m_mask &= AT8035_CLK_OUT_MASK;
- }
}
ret = of_property_read_u32(node, "qca,clk-out-strength", &strength);
@@ -1635,6 +1618,45 @@ static int at8031_config_intr(struct phy
return at803x_config_intr(phydev);
}
+static int at8035_parse_dt(struct phy_device *phydev)
+{
+ struct at803x_priv *priv = phydev->priv;
+
+ /* Mask is set by the generic at803x_parse_dt
+ * if property is set. Assume property is set
+ * with the mask not zero.
+ */
+ if (priv->clk_25m_mask) {
+ /* Fixup for the AR8030/AR8035. This chip has another mask and
+ * doesn't support the DSP reference. Eg. the lowest bit of the
+ * mask. The upper two bits select the same frequencies. Mask
+ * the lowest bit here.
+ *
+ * Warning:
+ * There was no datasheet for the AR8030 available so this is
+ * just a guess. But the AR8035 is listed as pin compatible
+ * to the AR8030 so there might be a good chance it works on
+ * the AR8030 too.
+ */
+ priv->clk_25m_reg &= AT8035_CLK_OUT_MASK;
+ priv->clk_25m_mask &= AT8035_CLK_OUT_MASK;
+ }
+
+ return 0;
+}
+
+/* AR8030 and AR8035 shared the same special mask for clk_25m */
+static int at8035_probe(struct phy_device *phydev)
+{
+ int ret;
+
+ ret = at803x_probe(phydev);
+ if (ret)
+ return ret;
+
+ return at8035_parse_dt(phydev);
+}
+
static int qca83xx_config_init(struct phy_device *phydev)
{
u8 switch_revision;
@@ -2107,7 +2129,7 @@ static struct phy_driver at803x_driver[]
PHY_ID_MATCH_EXACT(ATH8035_PHY_ID),
.name = "Qualcomm Atheros AR8035",
.flags = PHY_POLL_CABLE_TEST,
- .probe = at803x_probe,
+ .probe = at8035_probe,
.config_aneg = at803x_config_aneg,
.config_init = at803x_config_init,
.soft_reset = genphy_soft_reset,
@@ -2128,7 +2150,7 @@ static struct phy_driver at803x_driver[]
.phy_id = ATH8030_PHY_ID,
.name = "Qualcomm Atheros AR8030",
.phy_id_mask = AT8030_PHY_ID_MASK,
- .probe = at803x_probe,
+ .probe = at8035_probe,
.config_init = at803x_config_init,
.link_change_notify = at803x_link_change_notify,
.set_wol = at803x_set_wol,

219
target/linux/generic/backport-6.1/707-v6.8-13-net-phy-at803x-drop-specific-PHY-ID-check-from-cable.patch
View File

@@ -1,219 +0,0 @@
From ef9df47b449e32e06501a11272809be49019bdb6 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 8 Dec 2023 15:52:00 +0100
Subject: [PATCH 13/13] net: phy: at803x: drop specific PHY ID check from cable
test functions
Drop specific PHY ID check for cable test functions for at803x. This is
done to make functions more generic. While at it better describe what
the functions does by using more symbolic function names.
PHYs that requires to set additional reg are moved to specific function
calling the more generic one.
cdt_start and cdt_wait_for_completion are changed to take an additional
arg to pass specific values specific to the PHY.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 95 +++++++++++++++++++++-------------------
1 file changed, 50 insertions(+), 45 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1222,31 +1222,16 @@ static int at803x_cdt_fault_length(u16 s
return (dt * 824) / 10;
}
-static int at803x_cdt_start(struct phy_device *phydev, int pair)
+static int at803x_cdt_start(struct phy_device *phydev,
+ u32 cdt_start)
{
- u16 cdt;
-
- /* qca8081 takes the different bit 15 to enable CDT test */
- if (phydev->drv->phy_id == QCA8081_PHY_ID)
- cdt = QCA808X_CDT_ENABLE_TEST |
- QCA808X_CDT_LENGTH_UNIT |
- QCA808X_CDT_INTER_CHECK_DIS;
- else
- cdt = FIELD_PREP(AT803X_CDT_MDI_PAIR_MASK, pair) |
- AT803X_CDT_ENABLE_TEST;
-
- return phy_write(phydev, AT803X_CDT, cdt);
+ return phy_write(phydev, AT803X_CDT, cdt_start);
}
-static int at803x_cdt_wait_for_completion(struct phy_device *phydev)
+static int at803x_cdt_wait_for_completion(struct phy_device *phydev,
+ u32 cdt_en)
{
int val, ret;
- u16 cdt_en;
-
- if (phydev->drv->phy_id == QCA8081_PHY_ID)
- cdt_en = QCA808X_CDT_ENABLE_TEST;
- else
- cdt_en = AT803X_CDT_ENABLE_TEST;
/* One test run takes about 25ms */
ret = phy_read_poll_timeout(phydev, AT803X_CDT, val,
@@ -1266,11 +1251,13 @@ static int at803x_cable_test_one_pair(st
};
int ret, val;
- ret = at803x_cdt_start(phydev, pair);
+ val = FIELD_PREP(AT803X_CDT_MDI_PAIR_MASK, pair) |
+ AT803X_CDT_ENABLE_TEST;
+ ret = at803x_cdt_start(phydev, val);
if (ret)
return ret;
- ret = at803x_cdt_wait_for_completion(phydev);
+ ret = at803x_cdt_wait_for_completion(phydev, AT803X_CDT_ENABLE_TEST);
if (ret)
return ret;
@@ -1292,19 +1279,11 @@ static int at803x_cable_test_one_pair(st
}
static int at803x_cable_test_get_status(struct phy_device *phydev,
- bool *finished)
+ bool *finished, unsigned long pair_mask)
{
- unsigned long pair_mask;
int retries = 20;
int pair, ret;
- if (phydev->phy_id == ATH9331_PHY_ID ||
- phydev->phy_id == ATH8032_PHY_ID ||
- phydev->phy_id == QCA9561_PHY_ID)
- pair_mask = 0x3;
- else
- pair_mask = 0xf;
-
*finished = false;
/* According to the datasheet the CDT can be performed when
@@ -1331,7 +1310,7 @@ static int at803x_cable_test_get_status(
return 0;
}
-static int at803x_cable_test_start(struct phy_device *phydev)
+static void at803x_cable_test_autoneg(struct phy_device *phydev)
{
/* Enable auto-negotiation, but advertise no capabilities, no link
* will be established. A restart of the auto-negotiation is not
@@ -1339,11 +1318,11 @@ static int at803x_cable_test_start(struc
*/
phy_write(phydev, MII_BMCR, BMCR_ANENABLE);
phy_write(phydev, MII_ADVERTISE, ADVERTISE_CSMA);
- if (phydev->phy_id != ATH9331_PHY_ID &&
- phydev->phy_id != ATH8032_PHY_ID &&
- phydev->phy_id != QCA9561_PHY_ID)
- phy_write(phydev, MII_CTRL1000, 0);
+}
+static int at803x_cable_test_start(struct phy_device *phydev)
+{
+ at803x_cable_test_autoneg(phydev);
/* we do all the (time consuming) work later */
return 0;
}
@@ -1618,6 +1597,29 @@ static int at8031_config_intr(struct phy
return at803x_config_intr(phydev);
}
+/* AR8031 and AR8035 share the same cable test get status reg */
+static int at8031_cable_test_get_status(struct phy_device *phydev,
+ bool *finished)
+{
+ return at803x_cable_test_get_status(phydev, finished, 0xf);
+}
+
+/* AR8031 and AR8035 share the same cable test start logic */
+static int at8031_cable_test_start(struct phy_device *phydev)
+{
+ at803x_cable_test_autoneg(phydev);
+ phy_write(phydev, MII_CTRL1000, 0);
+ /* we do all the (time consuming) work later */
+ return 0;
+}
+
+/* AR8032, AR9331 and QCA9561 share the same cable test get status reg */
+static int at8032_cable_test_get_status(struct phy_device *phydev,
+ bool *finished)
+{
+ return at803x_cable_test_get_status(phydev, finished, 0x3);
+}
+
static int at8035_parse_dt(struct phy_device *phydev)
{
struct at803x_priv *priv = phydev->priv;
@@ -2041,11 +2043,14 @@ static int qca808x_cable_test_get_status
*finished = false;
- ret = at803x_cdt_start(phydev, 0);
+ val = QCA808X_CDT_ENABLE_TEST |
+ QCA808X_CDT_LENGTH_UNIT |
+ QCA808X_CDT_INTER_CHECK_DIS;
+ ret = at803x_cdt_start(phydev, val);
if (ret)
return ret;
- ret = at803x_cdt_wait_for_completion(phydev);
+ ret = at803x_cdt_wait_for_completion(phydev, QCA808X_CDT_ENABLE_TEST);
if (ret)
return ret;
@@ -2143,8 +2148,8 @@ static struct phy_driver at803x_driver[]
.handle_interrupt = at803x_handle_interrupt,
.get_tunable = at803x_get_tunable,
.set_tunable = at803x_set_tunable,
- .cable_test_start = at803x_cable_test_start,
- .cable_test_get_status = at803x_cable_test_get_status,
+ .cable_test_start = at8031_cable_test_start,
+ .cable_test_get_status = at8031_cable_test_get_status,
}, {
/* Qualcomm Atheros AR8030 */
.phy_id = ATH8030_PHY_ID,
@@ -2181,8 +2186,8 @@ static struct phy_driver at803x_driver[]
.handle_interrupt = at803x_handle_interrupt,
.get_tunable = at803x_get_tunable,
.set_tunable = at803x_set_tunable,
- .cable_test_start = at803x_cable_test_start,
- .cable_test_get_status = at803x_cable_test_get_status,
+ .cable_test_start = at8031_cable_test_start,
+ .cable_test_get_status = at8031_cable_test_get_status,
}, {
/* Qualcomm Atheros AR8032 */
PHY_ID_MATCH_EXACT(ATH8032_PHY_ID),
@@ -2197,7 +2202,7 @@ static struct phy_driver at803x_driver[]
.config_intr = at803x_config_intr,
.handle_interrupt = at803x_handle_interrupt,
.cable_test_start = at803x_cable_test_start,
- .cable_test_get_status = at803x_cable_test_get_status,
+ .cable_test_get_status = at8032_cable_test_get_status,
}, {
/* ATHEROS AR9331 */
PHY_ID_MATCH_EXACT(ATH9331_PHY_ID),
@@ -2210,7 +2215,7 @@ static struct phy_driver at803x_driver[]
.config_intr = at803x_config_intr,
.handle_interrupt = at803x_handle_interrupt,
.cable_test_start = at803x_cable_test_start,
- .cable_test_get_status = at803x_cable_test_get_status,
+ .cable_test_get_status = at8032_cable_test_get_status,
.read_status = at803x_read_status,
.soft_reset = genphy_soft_reset,
.config_aneg = at803x_config_aneg,
@@ -2226,7 +2231,7 @@ static struct phy_driver at803x_driver[]
.config_intr = at803x_config_intr,
.handle_interrupt = at803x_handle_interrupt,
.cable_test_start = at803x_cable_test_start,
- .cable_test_get_status = at803x_cable_test_get_status,
+ .cable_test_get_status = at8032_cable_test_get_status,
.read_status = at803x_read_status,
.soft_reset = genphy_soft_reset,
.config_aneg = at803x_config_aneg,

116
target/linux/generic/backport-6.1/708-v6.8-01-net-phy-at803x-move-specific-qca808x-config_aneg-to-.patch
View File

@@ -1,116 +0,0 @@
From 8e732f1c6f2dc5e18f766d0f1b11df9db2dd044a Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Thu, 14 Dec 2023 01:44:31 +0100
Subject: [PATCH 1/2] net: phy: at803x: move specific qca808x config_aneg to
dedicated function
Move specific qca808x config_aneg to dedicated function to permit easier
split of qca808x portion from at803x driver.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 66 ++++++++++++++++++++++++----------------
1 file changed, 40 insertions(+), 26 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1045,9 +1045,8 @@ static int at803x_config_mdix(struct phy
FIELD_PREP(AT803X_SFC_MDI_CROSSOVER_MODE_M, val));
}
-static int at803x_config_aneg(struct phy_device *phydev)
+static int at803x_prepare_config_aneg(struct phy_device *phydev)
{
- struct at803x_priv *priv = phydev->priv;
int ret;
ret = at803x_config_mdix(phydev, phydev->mdix_ctrl);
@@ -1064,33 +1063,22 @@ static int at803x_config_aneg(struct phy
return ret;
}
- if (priv->is_1000basex)
- return genphy_c37_config_aneg(phydev);
-
- /* Do not restart auto-negotiation by setting ret to 0 defautly,
- * when calling __genphy_config_aneg later.
- */
- ret = 0;
-
- if (phydev->drv->phy_id == QCA8081_PHY_ID) {
- int phy_ctrl = 0;
+ return 0;
+}
- /* The reg MII_BMCR also needs to be configured for force mode, the
- * genphy_config_aneg is also needed.
- */
- if (phydev->autoneg == AUTONEG_DISABLE)
- genphy_c45_pma_setup_forced(phydev);
+static int at803x_config_aneg(struct phy_device *phydev)
+{
+ struct at803x_priv *priv = phydev->priv;
+ int ret;
- if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->advertising))
- phy_ctrl = MDIO_AN_10GBT_CTRL_ADV2_5G;
+ ret = at803x_prepare_config_aneg(phydev);
+ if (ret)
+ return ret;
- ret = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
- MDIO_AN_10GBT_CTRL_ADV2_5G, phy_ctrl);
- if (ret < 0)
- return ret;
- }
+ if (priv->is_1000basex)
+ return genphy_c37_config_aneg(phydev);
- return __genphy_config_aneg(phydev, ret);
+ return genphy_config_aneg(phydev);
}
static int at803x_get_downshift(struct phy_device *phydev, u8 *d)
@@ -2118,6 +2106,32 @@ static int qca808x_get_features(struct p
return 0;
}
+static int qca808x_config_aneg(struct phy_device *phydev)
+{
+ int phy_ctrl = 0;
+ int ret;
+
+ ret = at803x_prepare_config_aneg(phydev);
+ if (ret)
+ return ret;
+
+ /* The reg MII_BMCR also needs to be configured for force mode, the
+ * genphy_config_aneg is also needed.
+ */
+ if (phydev->autoneg == AUTONEG_DISABLE)
+ genphy_c45_pma_setup_forced(phydev);
+
+ if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->advertising))
+ phy_ctrl = MDIO_AN_10GBT_CTRL_ADV2_5G;
+
+ ret = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
+ MDIO_AN_10GBT_CTRL_ADV2_5G, phy_ctrl);
+ if (ret < 0)
+ return ret;
+
+ return __genphy_config_aneg(phydev, ret);
+}
+
static void qca808x_link_change_notify(struct phy_device *phydev)
{
/* Assert interface sgmii fifo on link down, deassert it on link up,
@@ -2295,7 +2309,7 @@ static struct phy_driver at803x_driver[]
.set_wol = at803x_set_wol,
.get_wol = at803x_get_wol,
.get_features = qca808x_get_features,
- .config_aneg = at803x_config_aneg,
+ .config_aneg = qca808x_config_aneg,
.suspend = genphy_suspend,
.resume = genphy_resume,
.read_status = qca808x_read_status,

97
target/linux/generic/backport-6.1/708-v6.8-02-net-phy-at803x-make-read-specific-status-function-mo.patch
View File

@@ -1,97 +0,0 @@
From 38eb804e8458ba181a03a0498ce4bf84eebd1931 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Thu, 14 Dec 2023 01:44:32 +0100
Subject: [PATCH 2/2] net: phy: at803x: make read specific status function more
generic
Rework read specific status function to be more generic. The function
apply different speed mask based on the PHY ID. Make it more generic by
adding an additional arg to pass the specific speed (ss) mask and use
the provided mask to parse the speed value.
This is needed to permit an easier deatch of qca808x code from the
at803x driver.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 26 ++++++++++++++++++--------
1 file changed, 18 insertions(+), 8 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -301,6 +301,11 @@ static struct at803x_hw_stat qca83xx_hw_
{ "eee_wake_errors", 0x16, GENMASK(15, 0), MMD},
};
+struct at803x_ss_mask {
+ u16 speed_mask;
+ u8 speed_shift;
+};
+
struct at803x_priv {
int flags;
u16 clk_25m_reg;
@@ -921,7 +926,8 @@ static void at803x_link_change_notify(st
}
}
-static int at803x_read_specific_status(struct phy_device *phydev)
+static int at803x_read_specific_status(struct phy_device *phydev,
+ struct at803x_ss_mask ss_mask)
{
int ss;
@@ -940,11 +946,8 @@ static int at803x_read_specific_status(s
if (sfc < 0)
return sfc;
- /* qca8081 takes the different bits for speed value from at803x */
- if (phydev->drv->phy_id == QCA8081_PHY_ID)
- speed = FIELD_GET(QCA808X_SS_SPEED_MASK, ss);
- else
- speed = FIELD_GET(AT803X_SS_SPEED_MASK, ss);
+ speed = ss & ss_mask.speed_mask;
+ speed >>= ss_mask.speed_shift;
switch (speed) {
case AT803X_SS_SPEED_10:
@@ -989,6 +992,7 @@ static int at803x_read_specific_status(s
static int at803x_read_status(struct phy_device *phydev)
{
struct at803x_priv *priv = phydev->priv;
+ struct at803x_ss_mask ss_mask = { 0 };
int err, old_link = phydev->link;
if (priv->is_1000basex)
@@ -1012,7 +1016,9 @@ static int at803x_read_status(struct phy
if (err < 0)
return err;
- err = at803x_read_specific_status(phydev);
+ ss_mask.speed_mask = AT803X_SS_SPEED_MASK;
+ ss_mask.speed_shift = __bf_shf(AT803X_SS_SPEED_MASK);
+ err = at803x_read_specific_status(phydev, ss_mask);
if (err < 0)
return err;
@@ -1869,6 +1875,7 @@ static int qca808x_config_init(struct ph
static int qca808x_read_status(struct phy_device *phydev)
{
+ struct at803x_ss_mask ss_mask = { 0 };
int ret;
ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_STAT);
@@ -1882,7 +1889,10 @@ static int qca808x_read_status(struct ph
if (ret)
return ret;
- ret = at803x_read_specific_status(phydev);
+ /* qca8081 takes the different bits for speed value from at803x */
+ ss_mask.speed_mask = QCA808X_SS_SPEED_MASK;
+ ss_mask.speed_shift = __bf_shf(QCA808X_SS_SPEED_MASK);
+ ret = at803x_read_specific_status(phydev, ss_mask);
if (ret < 0)
return ret;

27
target/linux/generic/backport-6.1/709-v6.8-01-net-phy-at803x-remove-extra-space-after-cast.patch
View File

@@ -1,27 +0,0 @@
From fc9d7264ddc32eaa647d6bfcdc25cdf9f786fde0 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Mon, 18 Dec 2023 00:27:39 +0100
Subject: [PATCH 1/2] net: phy: at803x: remove extra space after cast
Remove extra space after cast as reported by checkpatch to keep code
clean.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20231217232739.27065-1-ansuelsmth@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/phy/at803x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -462,7 +462,7 @@ static int at803x_set_wol(struct phy_dev
if (!ndev)
return -ENODEV;
- mac = (const u8 *) ndev->dev_addr;
+ mac = (const u8 *)ndev->dev_addr;
if (!is_valid_ether_addr(mac))
return -EINVAL;

38
target/linux/generic/backport-6.1/709-v6.8-02-net-phy-at803x-replace-msleep-1-with-usleep_range.patch
View File

@@ -1,38 +0,0 @@
From 3ab5720881a924fb6405d9e6a3b09f1026467c47 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Mon, 18 Dec 2023 00:25:08 +0100
Subject: [PATCH 2/2] net: phy: at803x: replace msleep(1) with usleep_range
Replace msleep(1) with usleep_range as suggested by timers-howto guide.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20231217232508.26470-1-ansuelsmth@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/phy/at803x.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -916,9 +916,9 @@ static void at803x_link_change_notify(st
at803x_context_save(phydev, &context);
phy_device_reset(phydev, 1);
- msleep(1);
+ usleep_range(1000, 2000);
phy_device_reset(phydev, 0);
- msleep(1);
+ usleep_range(1000, 2000);
at803x_context_restore(phydev, &context);
@@ -1733,7 +1733,7 @@ static int qca83xx_resume(struct phy_dev
if (ret)
return ret;
- msleep(1);
+ usleep_range(1000, 2000);
return 0;
}

152
target/linux/generic/backport-6.1/710-v6.8-net-phy-at803x-better-align-function-varibles-to-ope.patch
View File

@@ -1,152 +0,0 @@
From 7961ef1fa10ec35ad6923fb5751877116e4b035b Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Tue, 19 Dec 2023 21:21:24 +0100
Subject: [PATCH] net: phy: at803x: better align function varibles to open
parenthesis
Better align function variables to open parenthesis as suggested by
checkpatch script for qca808x function to make code cleaner.
For cable_test_get_status function some additional rework was needed to
handle too long functions.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 67 ++++++++++++++++++++++------------------
1 file changed, 37 insertions(+), 30 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1781,27 +1781,27 @@ static int qca808x_phy_fast_retrain_conf
return ret;
phy_write_mmd(phydev, MDIO_MMD_AN, QCA808X_PHY_MMD7_TOP_OPTION1,
- QCA808X_TOP_OPTION1_DATA);
+ QCA808X_TOP_OPTION1_DATA);
phy_write_mmd(phydev, MDIO_MMD_PMAPMD, QCA808X_PHY_MMD1_MSE_THRESHOLD_20DB,
- QCA808X_MSE_THRESHOLD_20DB_VALUE);
+ QCA808X_MSE_THRESHOLD_20DB_VALUE);
phy_write_mmd(phydev, MDIO_MMD_PMAPMD, QCA808X_PHY_MMD1_MSE_THRESHOLD_17DB,
- QCA808X_MSE_THRESHOLD_17DB_VALUE);
+ QCA808X_MSE_THRESHOLD_17DB_VALUE);
phy_write_mmd(phydev, MDIO_MMD_PMAPMD, QCA808X_PHY_MMD1_MSE_THRESHOLD_27DB,
- QCA808X_MSE_THRESHOLD_27DB_VALUE);
+ QCA808X_MSE_THRESHOLD_27DB_VALUE);
phy_write_mmd(phydev, MDIO_MMD_PMAPMD, QCA808X_PHY_MMD1_MSE_THRESHOLD_28DB,
- QCA808X_MSE_THRESHOLD_28DB_VALUE);
+ QCA808X_MSE_THRESHOLD_28DB_VALUE);
phy_write_mmd(phydev, MDIO_MMD_PCS, QCA808X_PHY_MMD3_DEBUG_1,
- QCA808X_MMD3_DEBUG_1_VALUE);
+ QCA808X_MMD3_DEBUG_1_VALUE);
phy_write_mmd(phydev, MDIO_MMD_PCS, QCA808X_PHY_MMD3_DEBUG_4,
- QCA808X_MMD3_DEBUG_4_VALUE);
+ QCA808X_MMD3_DEBUG_4_VALUE);
phy_write_mmd(phydev, MDIO_MMD_PCS, QCA808X_PHY_MMD3_DEBUG_5,
- QCA808X_MMD3_DEBUG_5_VALUE);
+ QCA808X_MMD3_DEBUG_5_VALUE);
phy_write_mmd(phydev, MDIO_MMD_PCS, QCA808X_PHY_MMD3_DEBUG_3,
- QCA808X_MMD3_DEBUG_3_VALUE);
+ QCA808X_MMD3_DEBUG_3_VALUE);
phy_write_mmd(phydev, MDIO_MMD_PCS, QCA808X_PHY_MMD3_DEBUG_6,
- QCA808X_MMD3_DEBUG_6_VALUE);
+ QCA808X_MMD3_DEBUG_6_VALUE);
phy_write_mmd(phydev, MDIO_MMD_PCS, QCA808X_PHY_MMD3_DEBUG_2,
- QCA808X_MMD3_DEBUG_2_VALUE);
+ QCA808X_MMD3_DEBUG_2_VALUE);
return 0;
}
@@ -1838,13 +1838,14 @@ static int qca808x_config_init(struct ph
/* Active adc&vga on 802.3az for the link 1000M and 100M */
ret = phy_modify_mmd(phydev, MDIO_MMD_PCS, QCA808X_PHY_MMD3_ADDR_CLD_CTRL7,
- QCA808X_8023AZ_AFE_CTRL_MASK, QCA808X_8023AZ_AFE_EN);
+ QCA808X_8023AZ_AFE_CTRL_MASK, QCA808X_8023AZ_AFE_EN);
if (ret)
return ret;
/* Adjust the threshold on 802.3az for the link 1000M */
ret = phy_write_mmd(phydev, MDIO_MMD_PCS,
- QCA808X_PHY_MMD3_AZ_TRAINING_CTRL, QCA808X_MMD3_AZ_TRAINING_VAL);
+ QCA808X_PHY_MMD3_AZ_TRAINING_CTRL,
+ QCA808X_MMD3_AZ_TRAINING_VAL);
if (ret)
return ret;
@@ -1870,7 +1871,8 @@ static int qca808x_config_init(struct ph
/* Configure adc threshold as 100mv for the link 10M */
return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_ADC_THRESHOLD,
- QCA808X_ADC_THRESHOLD_MASK, QCA808X_ADC_THRESHOLD_100MV);
+ QCA808X_ADC_THRESHOLD_MASK,
+ QCA808X_ADC_THRESHOLD_100MV);
}
static int qca808x_read_status(struct phy_device *phydev)
@@ -1883,7 +1885,7 @@ static int qca808x_read_status(struct ph
return ret;
linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->lp_advertising,
- ret & MDIO_AN_10GBT_STAT_LP2_5G);
+ ret & MDIO_AN_10GBT_STAT_LP2_5G);
ret = genphy_read_status(phydev);
if (ret)
@@ -1913,7 +1915,7 @@ static int qca808x_read_status(struct ph
*/
if (qca808x_has_fast_retrain_or_slave_seed(phydev)) {
if (phydev->master_slave_state == MASTER_SLAVE_STATE_ERR ||
- qca808x_is_prefer_master(phydev)) {
+ qca808x_is_prefer_master(phydev)) {
qca808x_phy_ms_seed_enable(phydev, false);
} else {
qca808x_phy_ms_seed_enable(phydev, true);
@@ -2070,18 +2072,22 @@ static int qca808x_cable_test_get_status
ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_D,
qca808x_cable_test_result_trans(pair_d));
- if (qca808x_cdt_fault_length_valid(pair_a))
- ethnl_cable_test_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_A,
- qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_A));
- if (qca808x_cdt_fault_length_valid(pair_b))
- ethnl_cable_test_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_B,
- qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_B));
- if (qca808x_cdt_fault_length_valid(pair_c))
- ethnl_cable_test_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_C,
- qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_C));
- if (qca808x_cdt_fault_length_valid(pair_d))
- ethnl_cable_test_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_D,
- qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_D));
+ if (qca808x_cdt_fault_length_valid(pair_a)) {
+ val = qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_A);
+ ethnl_cable_test_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_A, val);
+ }
+ if (qca808x_cdt_fault_length_valid(pair_b)) {
+ val = qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_B);
+ ethnl_cable_test_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_B, val);
+ }
+ if (qca808x_cdt_fault_length_valid(pair_c)) {
+ val = qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_C);
+ ethnl_cable_test_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_C, val);
+ }
+ if (qca808x_cdt_fault_length_valid(pair_d)) {
+ val = qca808x_cdt_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_D);
+ ethnl_cable_test_fault_length(phydev, ETHTOOL_A_CABLE_PAIR_D, val);
+ }
*finished = true;
@@ -2148,8 +2154,9 @@ static void qca808x_link_change_notify(s
* the interface device address is always phy address added by 1.
*/
mdiobus_c45_modify_changed(phydev->mdio.bus, phydev->mdio.addr + 1,
- MDIO_MMD_PMAPMD, QCA8081_PHY_SERDES_MMD1_FIFO_CTRL,
- QCA8081_PHY_FIFO_RSTN, phydev->link ? QCA8081_PHY_FIFO_RSTN : 0);
+ MDIO_MMD_PMAPMD, QCA8081_PHY_SERDES_MMD1_FIFO_CTRL,
+ QCA8081_PHY_FIFO_RSTN,
+ phydev->link ? QCA8081_PHY_FIFO_RSTN : 0);
}
static struct phy_driver at803x_driver[] = {

62
target/linux/generic/backport-6.1/711-v6.8-01-net-phy-at803x-generalize-cdt-fault-length-function.patch
View File

@@ -1,62 +0,0 @@
From 22eb276098da820d9440fad22901f9b74ed4d659 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Thu, 4 Jan 2024 22:30:38 +0100
Subject: [PATCH 1/4] net: phy: at803x: generalize cdt fault length function
Generalize cable test fault length function since they all base on the
same magic values (already reverse engineered to understand the meaning
of it) to have consistenct values on every PHY.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/at803x.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1192,10 +1192,8 @@ static bool at803x_cdt_fault_length_vali
return false;
}
-static int at803x_cdt_fault_length(u16 status)
+static int at803x_cdt_fault_length(int dt)
{
- int dt;
-
/* According to the datasheet the distance to the fault is
* DELTA_TIME * 0.824 meters.
*
@@ -1211,8 +1209,6 @@ static int at803x_cdt_fault_length(u16 s
* With a VF of 0.69 we get the factor 0.824 mentioned in the
* datasheet.
*/
- dt = FIELD_GET(AT803X_CDT_STATUS_DELTA_TIME_MASK, status);
-
return (dt * 824) / 10;
}
@@ -1265,9 +1261,11 @@ static int at803x_cable_test_one_pair(st
ethnl_cable_test_result(phydev, ethtool_pair[pair],
at803x_cable_test_result_trans(val));
- if (at803x_cdt_fault_length_valid(val))
+ if (at803x_cdt_fault_length_valid(val)) {
+ val = FIELD_GET(AT803X_CDT_STATUS_DELTA_TIME_MASK, val);
ethnl_cable_test_fault_length(phydev, ethtool_pair[pair],
at803x_cdt_fault_length(val));
+ }
return 1;
}
@@ -1992,7 +1990,8 @@ static int qca808x_cdt_fault_length(stru
if (val < 0)
return val;
- return (FIELD_GET(QCA808X_CDT_DIAG_LENGTH, val) * 824) / 10;
+ val = FIELD_GET(QCA808X_CDT_DIAG_LENGTH, val);
+ return at803x_cdt_fault_length(val);
}
static int qca808x_cable_test_start(struct phy_device *phydev)

Some files were not shown because too many files have changed in this diff Show More