From 462a088c474832b19ff2730de1e6bea66d399c23 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Karel=20Ko=C4=8D=C3=AD?= Date: Sat, 15 Oct 2022 23:01:29 +0200 Subject: Add Turris kernel (includes patches from OpenWrt) --- ...-dsa-qca8k-move-page-cache-to-driver-priv.patch | 208 +++++++++++++++++++++ 1 file changed, 208 insertions(+) create mode 100644 pkgs/patches-linux-5.15/766-13-net-dsa-qca8k-move-page-cache-to-driver-priv.patch (limited to 'pkgs/patches-linux-5.15/766-13-net-dsa-qca8k-move-page-cache-to-driver-priv.patch') diff --git a/pkgs/patches-linux-5.15/766-13-net-dsa-qca8k-move-page-cache-to-driver-priv.patch b/pkgs/patches-linux-5.15/766-13-net-dsa-qca8k-move-page-cache-to-driver-priv.patch new file mode 100644 index 0000000..dc81609 --- /dev/null +++ b/pkgs/patches-linux-5.15/766-13-net-dsa-qca8k-move-page-cache-to-driver-priv.patch @@ -0,0 +1,208 @@ +From 4264350acb75430d5021a1d7de56a33faf69a097 Mon Sep 17 00:00:00 2001 +From: Ansuel Smith +Date: Wed, 2 Feb 2022 01:03:32 +0100 +Subject: [PATCH 13/16] net: dsa: qca8k: move page cache to driver priv + +There can be multiple qca8k switch on the same system. Move the static +qca8k_current_page to qca8k_priv and make it specific for each switch. + +Signed-off-by: Ansuel Smith +Reviewed-by: Florian Fainelli +Signed-off-by: David S. Miller +--- + drivers/net/dsa/qca8k.c | 42 ++++++++++++++++++++--------------------- + drivers/net/dsa/qca8k.h | 9 +++++++++ + 2 files changed, 29 insertions(+), 22 deletions(-) + +--- a/drivers/net/dsa/qca8k.c ++++ b/drivers/net/dsa/qca8k.c +@@ -75,12 +75,6 @@ static const struct qca8k_mib_desc ar832 + MIB_DESC(1, 0xac, "TXUnicast"), + }; + +-/* The 32bit switch registers are accessed indirectly. To achieve this we need +- * to set the page of the register. Track the last page that was set to reduce +- * mdio writes +- */ +-static u16 qca8k_current_page = 0xffff; +- + static void + qca8k_split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page) + { +@@ -134,11 +128,13 @@ qca8k_mii_write32(struct mii_bus *bus, i + } + + static int +-qca8k_set_page(struct mii_bus *bus, u16 page) ++qca8k_set_page(struct qca8k_priv *priv, u16 page) + { ++ u16 *cached_page = &priv->mdio_cache.page; ++ struct mii_bus *bus = priv->bus; + int ret; + +- if (page == qca8k_current_page) ++ if (page == *cached_page) + return 0; + + ret = bus->write(bus, 0x18, 0, page); +@@ -148,7 +144,7 @@ qca8k_set_page(struct mii_bus *bus, u16 + return ret; + } + +- qca8k_current_page = page; ++ *cached_page = page; + usleep_range(1000, 2000); + return 0; + } +@@ -374,7 +370,7 @@ qca8k_regmap_read(void *ctx, uint32_t re + + mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); + +- ret = qca8k_set_page(bus, page); ++ ret = qca8k_set_page(priv, page); + if (ret < 0) + goto exit; + +@@ -400,7 +396,7 @@ qca8k_regmap_write(void *ctx, uint32_t r + + mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); + +- ret = qca8k_set_page(bus, page); ++ ret = qca8k_set_page(priv, page); + if (ret < 0) + goto exit; + +@@ -427,7 +423,7 @@ qca8k_regmap_update_bits(void *ctx, uint + + mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); + +- ret = qca8k_set_page(bus, page); ++ ret = qca8k_set_page(priv, page); + if (ret < 0) + goto exit; + +@@ -1098,8 +1094,9 @@ qca8k_mdio_busy_wait(struct mii_bus *bus + } + + static int +-qca8k_mdio_write(struct mii_bus *bus, int phy, int regnum, u16 data) ++qca8k_mdio_write(struct qca8k_priv *priv, int phy, int regnum, u16 data) + { ++ struct mii_bus *bus = priv->bus; + u16 r1, r2, page; + u32 val; + int ret; +@@ -1116,7 +1113,7 @@ qca8k_mdio_write(struct mii_bus *bus, in + + mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); + +- ret = qca8k_set_page(bus, page); ++ ret = qca8k_set_page(priv, page); + if (ret) + goto exit; + +@@ -1135,8 +1132,9 @@ exit: + } + + static int +-qca8k_mdio_read(struct mii_bus *bus, int phy, int regnum) ++qca8k_mdio_read(struct qca8k_priv *priv, int phy, int regnum) + { ++ struct mii_bus *bus = priv->bus; + u16 r1, r2, page; + u32 val; + int ret; +@@ -1152,7 +1150,7 @@ qca8k_mdio_read(struct mii_bus *bus, int + + mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); + +- ret = qca8k_set_page(bus, page); ++ ret = qca8k_set_page(priv, page); + if (ret) + goto exit; + +@@ -1181,7 +1179,6 @@ static int + qca8k_internal_mdio_write(struct mii_bus *slave_bus, int phy, int regnum, u16 data) + { + struct qca8k_priv *priv = slave_bus->priv; +- struct mii_bus *bus = priv->bus; + int ret; + + /* Use mdio Ethernet when available, fallback to legacy one on error */ +@@ -1189,14 +1186,13 @@ qca8k_internal_mdio_write(struct mii_bus + if (!ret) + return 0; + +- return qca8k_mdio_write(bus, phy, regnum, data); ++ return qca8k_mdio_write(priv, phy, regnum, data); + } + + static int + qca8k_internal_mdio_read(struct mii_bus *slave_bus, int phy, int regnum) + { + struct qca8k_priv *priv = slave_bus->priv; +- struct mii_bus *bus = priv->bus; + int ret; + + /* Use mdio Ethernet when available, fallback to legacy one on error */ +@@ -1204,7 +1200,7 @@ qca8k_internal_mdio_read(struct mii_bus + if (ret >= 0) + return ret; + +- return qca8k_mdio_read(bus, phy, regnum); ++ return qca8k_mdio_read(priv, phy, regnum); + } + + static int +@@ -1225,7 +1221,7 @@ qca8k_phy_write(struct dsa_switch *ds, i + if (!ret) + return ret; + +- return qca8k_mdio_write(priv->bus, port, regnum, data); ++ return qca8k_mdio_write(priv, port, regnum, data); + } + + static int +@@ -1246,7 +1242,7 @@ qca8k_phy_read(struct dsa_switch *ds, in + if (ret >= 0) + return ret; + +- ret = qca8k_mdio_read(priv->bus, port, regnum); ++ ret = qca8k_mdio_read(priv, port, regnum); + + if (ret < 0) + return 0xffff; +@@ -3041,6 +3037,8 @@ qca8k_sw_probe(struct mdio_device *mdiod + return PTR_ERR(priv->regmap); + } + ++ priv->mdio_cache.page = 0xffff; ++ + /* Check the detected switch id */ + ret = qca8k_read_switch_id(priv); + if (ret) +--- a/drivers/net/dsa/qca8k.h ++++ b/drivers/net/dsa/qca8k.h +@@ -363,6 +363,14 @@ struct qca8k_ports_config { + u8 rgmii_tx_delay[QCA8K_NUM_CPU_PORTS]; /* 0: CPU port0, 1: CPU port6 */ + }; + ++struct qca8k_mdio_cache { ++/* The 32bit switch registers are accessed indirectly. To achieve this we need ++ * to set the page of the register. Track the last page that was set to reduce ++ * mdio writes ++ */ ++ u16 page; ++}; ++ + struct qca8k_priv { + u8 switch_id; + u8 switch_revision; +@@ -383,6 +391,7 @@ struct qca8k_priv { + struct net_device *mgmt_master; /* Track if mdio/mib Ethernet is available */ + struct qca8k_mgmt_eth_data mgmt_eth_data; + struct qca8k_mib_eth_data mib_eth_data; ++ struct qca8k_mdio_cache mdio_cache; + }; + + struct qca8k_mib_desc { -- cgit v1.2.3