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Backport patches for rx buffer stalls on QCA953x and QCA956x

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Fixes #1101
This commit is contained in:
Matthias Schiffer 2017-12-29 16:12:52 +01:00
parent 21b3dd3259
commit d531289dee
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GPG Key ID: 16EF3F64CB201D9C
2 changed files with 233 additions and 0 deletions
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162
patches/lede/0046-ar71xx-QCA956X-add-missing-register.patch Normal file
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@ -0,0 +1,162 @@
From: Henryk Heisig <hyniu@o2.pl>
Date: Fri, 6 Jan 2017 21:21:11 +0100
Subject: ar71xx: QCA956X: add missing register
Signed-off-by: Henryk Heisig <hyniu@o2.pl>
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c
index 790c2d3396ffd0a0d00d13403b7f22e32863eef4..a8b19b68b2a46545fdd3ed6bdf14006f8a741185 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c
@@ -686,7 +686,6 @@ static int __init ath79_setup_phy_if_mode(unsigned int id,
case ATH79_SOC_AR7241:
case ATH79_SOC_AR9330:
case ATH79_SOC_AR9331:
- case ATH79_SOC_QCA956X:
case ATH79_SOC_TP9343:
pdata->phy_if_mode = PHY_INTERFACE_MODE_GMII;
break;
@@ -698,6 +697,7 @@ static int __init ath79_setup_phy_if_mode(unsigned int id,
case ATH79_SOC_AR9342:
case ATH79_SOC_AR9344:
case ATH79_SOC_QCA9533:
+ case ATH79_SOC_QCA956X:
switch (pdata->phy_if_mode) {
case PHY_INTERFACE_MODE_MII:
case PHY_INTERFACE_MODE_GMII:
@@ -814,6 +814,27 @@ void __init ath79_setup_qca955x_eth_cfg(u32 mask)
iounmap(base);
}
+void __init ath79_setup_qca956x_eth_cfg(u32 mask)
+{
+ void __iomem *base;
+ u32 t;
+
+ base = ioremap(QCA956X_GMAC_BASE, QCA956X_GMAC_SIZE);
+
+ t = __raw_readl(base + QCA956X_GMAC_REG_ETH_CFG);
+
+ t &= ~(QCA956X_ETH_CFG_SW_ONLY_MODE |
+ QCA956X_ETH_CFG_SW_PHY_SWAP);
+
+ t |= mask;
+
+ __raw_writel(t, base + QCA956X_GMAC_REG_ETH_CFG);
+ /* flush write */
+ __raw_readl(base + QCA956X_GMAC_REG_ETH_CFG);
+
+ iounmap(base);
+}
+
static int ath79_eth_instance __initdata;
void __init ath79_register_eth(unsigned int id)
{
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.h b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.h
index 5a226e40284b6853b59812ffc791e0612c91fa9b..fb9e4f63c66ef9008e423007ecff02c93c321fb8 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.h
+++ b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.h
@@ -49,5 +49,6 @@ void ath79_setup_ar933x_phy4_switch(bool mac, bool mdio);
void ath79_setup_ar934x_eth_cfg(u32 mask);
void ath79_setup_ar934x_eth_rx_delay(unsigned int rxd, unsigned int rxdv);
void ath79_setup_qca955x_eth_cfg(u32 mask);
+void ath79_setup_qca956x_eth_cfg(u32 mask);
#endif /* _ATH79_DEV_ETH_H */
diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ath79/ag71xx_platform.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ath79/ag71xx_platform.h
index 5fd352c638a75063945adadb64b1043cd81b506c..078fa157f242ce4350185d97a61ef5d1f3f16fc5 100644
--- a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ath79/ag71xx_platform.h
+++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ath79/ag71xx_platform.h
@@ -37,11 +37,13 @@ struct ag71xx_platform_data {
u8 is_ar724x:1;
u8 has_ar8216:1;
u8 use_flow_control:1;
+ u8 is_qca956x:1;
struct ag71xx_switch_platform_data *switch_data;
void (*ddr_flush)(void);
void (*set_speed)(int speed);
+ void (*update_pll)(u32 pll_10, u32 pll_100, u32 pll_1000);
u32 fifo_cfg1;
u32 fifo_cfg2;
diff --git a/target/linux/ar71xx/patches-4.4/622-MIPS-ath79-add-more-register-defines-for-QCA956x-SoC.patch b/target/linux/ar71xx/patches-4.4/622-MIPS-ath79-add-more-register-defines-for-QCA956x-SoC.patch
new file mode 100644
index 0000000000000000000000000000000000000000..dff354398cd2ab6556b13be9f7ce45f4d7f311e8
--- /dev/null
+++ b/target/linux/ar71xx/patches-4.4/622-MIPS-ath79-add-more-register-defines-for-QCA956x-SoC.patch
@@ -0,0 +1,38 @@
+--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
++++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
+@@ -157,6 +157,10 @@
+ #define QCA956X_EHCI0_BASE 0x1b000000
+ #define QCA956X_EHCI1_BASE 0x1b400000
+ #define QCA956X_EHCI_SIZE 0x200
++#define QCA956X_GMAC_SGMII_BASE (AR71XX_APB_BASE + 0x00070000)
++#define QCA956X_GMAC_SGMII_SIZE 0x64
++#define QCA956X_PLL_BASE (AR71XX_APB_BASE + 0x00050000)
++#define QCA956X_PLL_SIZE 0x50
+ #define QCA956X_GMAC_BASE (AR71XX_APB_BASE + 0x00070000)
+ #define QCA956X_GMAC_SIZE 0x64
+
+@@ -404,6 +408,7 @@
+ #define QCA956X_PLL_DDR_CONFIG_REG 0x08
+ #define QCA956X_PLL_DDR_CONFIG1_REG 0x0c
+ #define QCA956X_PLL_CLK_CTRL_REG 0x10
++#define QCA956X_PLL_ETH_XMII_CONTROL_REG 0x30
+
+ #define QCA956X_PLL_CPU_CONFIG_REFDIV_SHIFT 12
+ #define QCA956X_PLL_CPU_CONFIG_REFDIV_MASK 0x1f
+@@ -1186,4 +1191,16 @@
+ #define QCA955X_ETH_CFG_TXE_DELAY_MASK 0x3
+ #define QCA955X_ETH_CFG_TXE_DELAY_SHIFT 20
+
++/*
++ * QCA956X GMAC Interface
++ */
++
++#define QCA956X_GMAC_REG_ETH_CFG 0x00
++
++#define QCA956X_ETH_CFG_SW_ONLY_MODE BIT(7)
++#define QCA956X_ETH_CFG_SW_PHY_SWAP BIT(8)
++#define QCA956X_ETH_CFG_SW_PHY_ADDR_SWAP BIT(9)
++#define QCA956X_ETH_CFG_SW_APB_ACCESS BIT(10)
++#define QCA956X_ETH_CFG_SW_ACC_MSB_FIRST BIT(13)
++
+ #endif /* __ASM_MACH_AR71XX_REGS_H */
diff --git a/target/linux/ar71xx/patches-4.4/640-MIPS-ath79-add-QCA955x-wmac-reset.patch b/target/linux/ar71xx/patches-4.4/640-MIPS-ath79-add-QCA955x-wmac-reset.patch
index add2992186ad1d82ce924d2f1ccdf3c36c390a3d..8aa5957a7152af27854f6f7c197120b8029cf9e8 100644
--- a/target/linux/ar71xx/patches-4.4/640-MIPS-ath79-add-QCA955x-wmac-reset.patch
+++ b/target/linux/ar71xx/patches-4.4/640-MIPS-ath79-add-QCA955x-wmac-reset.patch
@@ -20,7 +20,7 @@
#define AR71XX_UART_BASE (AR71XX_APB_BASE + 0x00020000)
#define AR71XX_UART_SIZE 0x100
#define AR71XX_USB_CTRL_BASE (AR71XX_APB_BASE + 0x00030000)
-@@ -218,6 +218,9 @@
+@@ -222,6 +222,9 @@
#define QCA953X_DDR_REG_FLUSH_PCIE 0xa8
#define QCA953X_DDR_REG_FLUSH_WMAC 0xac
diff --git a/target/linux/ar71xx/patches-4.4/820-MIPS-ath79-add_gpio_function2_setup.patch b/target/linux/ar71xx/patches-4.4/820-MIPS-ath79-add_gpio_function2_setup.patch
index 7db6ad361fa21252118e589195b0bc73222cf4f5..6b331587d157511a40fc1e46630c416a60565a0b 100644
--- a/target/linux/ar71xx/patches-4.4/820-MIPS-ath79-add_gpio_function2_setup.patch
+++ b/target/linux/ar71xx/patches-4.4/820-MIPS-ath79-add_gpio_function2_setup.patch
@@ -48,7 +48,7 @@ functions on the Arduino Yun.
void __iomem *reg = ath79_gpio_get_function_reg();
--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
+++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
-@@ -850,6 +850,7 @@
+@@ -855,6 +855,7 @@
#define AR71XX_GPIO_REG_INT_PENDING 0x20
#define AR71XX_GPIO_REG_INT_ENABLE 0x24
#define AR71XX_GPIO_REG_FUNC 0x28
@@ -56,7 +56,7 @@ functions on the Arduino Yun.
#define AR934X_GPIO_REG_OUT_FUNC0 0x2c
#define AR934X_GPIO_REG_OUT_FUNC1 0x30
-@@ -974,6 +975,8 @@
+@@ -979,6 +980,8 @@
#define AR724X_GPIO_FUNC_UART_EN BIT(1)
#define AR724X_GPIO_FUNC_JTAG_DISABLE BIT(0)

71
patches/lede/0047-ag71xx-Fix-rx-ring-buffer-stall-on-small-packets-flood-on-qca956x-and-qca953x.patch Normal file
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@ -0,0 +1,71 @@
From: Vittorio Gambaletta <openwrt@vittgam.net>
Date: Sat, 25 Mar 2017 18:08:02 +0100
Subject: ag71xx: Fix rx ring buffer stall on small packets flood on qca956x and qca953x.
Backported from Code Aurora QSDK
Signed-off-by: Vittorio Gambaletta <openwrt@vittgam.net>
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c
index a8b19b68b2a46545fdd3ed6bdf14006f8a741185..427de6a50d0fcbc9dae11f8e6921194c0a5b09ed 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c
@@ -996,6 +996,9 @@ void __init ath79_register_eth(unsigned int id)
pdata->reset_bit = AR934X_RESET_GE0_MAC |
AR934X_RESET_GE0_MDIO;
pdata->set_speed = ar934x_set_speed_ge0;
+
+ if (ath79_soc == ATH79_SOC_QCA9533)
+ pdata->disable_inline_checksum_engine = 1;
} else {
pdata->reset_bit = AR934X_RESET_GE1_MAC |
AR934X_RESET_GE1_MDIO;
@@ -1097,6 +1100,8 @@ void __init ath79_register_eth(unsigned int id)
pdata->set_speed = qca956x_set_speed_sgmii;
else
pdata->set_speed = ar934x_set_speed_ge0;
+
+ pdata->disable_inline_checksum_engine = 1;
} else {
pdata->reset_bit = QCA955X_RESET_GE1_MAC |
QCA955X_RESET_GE1_MDIO;
diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ath79/ag71xx_platform.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ath79/ag71xx_platform.h
index 078fa157f242ce4350185d97a61ef5d1f3f16fc5..5fdc59c7b78b84670daefa9fd831b154ded84ddc 100644
--- a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ath79/ag71xx_platform.h
+++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ath79/ag71xx_platform.h
@@ -37,7 +37,7 @@ struct ag71xx_platform_data {
u8 is_ar724x:1;
u8 has_ar8216:1;
u8 use_flow_control:1;
- u8 is_qca956x:1;
+ u8 disable_inline_checksum_engine:1;
struct ag71xx_switch_platform_data *switch_data;
diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
index 566e9513d8b7c6ef101902ae7d281dcc1c233893..72dd654a691355c881b15d796fad0d640e05fc15 100644
--- a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
@@ -629,6 +629,22 @@ __ag71xx_link_adjust(struct ag71xx *ag, bool update)
ag71xx_wr(ag, AG71XX_REG_MAC_CFG2, cfg2);
ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, fifo5);
ag71xx_wr(ag, AG71XX_REG_MAC_IFCTL, ifctl);
+
+ if (pdata->disable_inline_checksum_engine) {
+ /*
+ * The rx ring buffer can stall on small packets on QCA953x and
+ * QCA956x. Disabling the inline checksum engine fixes the stall.
+ * The wr, rr functions cannot be used since this hidden register
+ * is outside of the normal ag71xx register block.
+ */
+ void __iomem *dam = ioremap_nocache(0xb90001bc, 0x4);
+ if (dam) {
+ __raw_writel(__raw_readl(dam) & ~BIT(27), dam);
+ (void)__raw_readl(dam);
+ iounmap(dam);
+ }
+ }
+
ag71xx_hw_start(ag);
netif_carrier_on(ag->dev);