ag71xx: Fix rx ring buffer stall on small packets flood on qca956x and qca953x.
[openwrt/staging/lynxis.git] / target / linux / ar71xx / files / arch / mips / ath79 / dev-eth.c
index 4a2b1db7fb13ba2145eaf1bad8b9771466f3e7da..427de6a50d0fcbc9dae11f8e6921194c0a5b09ed 100644 (file)
@@ -20,6 +20,7 @@
 #include <linux/platform_device.h>
 #include <linux/serial_8250.h>
 #include <linux/clk.h>
+#include <linux/sizes.h>
 
 #include <asm/mach-ath79/ath79.h>
 #include <asm/mach-ath79/ar71xx_regs.h>
@@ -39,7 +40,7 @@ static struct resource ath79_mdio0_resources[] = {
        }
 };
 
-static struct ag71xx_mdio_platform_data ath79_mdio0_data;
+struct ag71xx_mdio_platform_data ath79_mdio0_data;
 
 struct platform_device ath79_mdio0_device = {
        .name           = "ag71xx-mdio",
@@ -60,7 +61,7 @@ static struct resource ath79_mdio1_resources[] = {
        }
 };
 
-static struct ag71xx_mdio_platform_data ath79_mdio1_data;
+struct ag71xx_mdio_platform_data ath79_mdio1_data;
 
 struct platform_device ath79_mdio1_device = {
        .name           = "ag71xx-mdio",
@@ -182,7 +183,8 @@ void __init ath79_register_mdio(unsigned int id, u32 phy_mask)
            ath79_soc == ATH79_SOC_AR9342 ||
            ath79_soc == ATH79_SOC_AR9344 ||
            ath79_soc == ATH79_SOC_QCA9556 ||
-           ath79_soc == ATH79_SOC_QCA9558)
+           ath79_soc == ATH79_SOC_QCA9558 ||
+           ath79_soc == ATH79_SOC_QCA956X)
                max_id = 1;
        else
                max_id = 0;
@@ -196,6 +198,8 @@ void __init ath79_register_mdio(unsigned int id, u32 phy_mask)
        case ATH79_SOC_AR7241:
        case ATH79_SOC_AR9330:
        case ATH79_SOC_AR9331:
+       case ATH79_SOC_QCA9533:
+       case ATH79_SOC_TP9343:
                mdio_dev = &ath79_mdio1_device;
                mdio_data = &ath79_mdio1_data;
                break;
@@ -205,6 +209,7 @@ void __init ath79_register_mdio(unsigned int id, u32 phy_mask)
        case ATH79_SOC_AR9344:
        case ATH79_SOC_QCA9556:
        case ATH79_SOC_QCA9558:
+       case ATH79_SOC_QCA956X:
                if (id == 0) {
                        mdio_dev = &ath79_mdio0_device;
                        mdio_data = &ath79_mdio0_data;
@@ -253,13 +258,19 @@ void __init ath79_register_mdio(unsigned int id, u32 phy_mask)
                mdio_data->is_ar934x = 1;
                break;
 
+       case ATH79_SOC_QCA9533:
+       case ATH79_SOC_TP9343:
+               mdio_data->builtin_switch = 1;
+               break;
+
+       case ATH79_SOC_QCA9556:
        case ATH79_SOC_QCA9558:
-               if (id == 1)
-                       mdio_data->builtin_switch = 1;
                mdio_data->is_ar934x = 1;
                break;
 
-       case ATH79_SOC_QCA9556:
+       case ATH79_SOC_QCA956X:
+               if (id == 1)
+                       mdio_data->builtin_switch = 1;
                mdio_data->is_ar934x = 1;
                break;
 
@@ -382,52 +393,28 @@ static void qca955x_set_speed_sgmii(int speed)
        iounmap(base);
 }
 
-static void ath79_set_speed_dummy(int speed)
+static void qca956x_set_speed_sgmii(int speed)
 {
+       void __iomem *base;
+       u32 val = ath79_get_eth_pll(0, speed);
+
+       base = ioremap_nocache(AR71XX_PLL_BASE, AR71XX_PLL_SIZE);
+       __raw_writel(val, base + QCA955X_PLL_ETH_SGMII_CONTROL_REG);
+       iounmap(base);
 }
 
-static void ath79_ddr_no_flush(void)
+static void ath79_set_speed_dummy(int speed)
 {
 }
 
 static void ath79_ddr_flush_ge0(void)
 {
-       ath79_ddr_wb_flush(AR71XX_DDR_REG_FLUSH_GE0);
+       ath79_ddr_wb_flush(0);
 }
 
 static void ath79_ddr_flush_ge1(void)
 {
-       ath79_ddr_wb_flush(AR71XX_DDR_REG_FLUSH_GE1);
-}
-
-static void ar724x_ddr_flush_ge0(void)
-{
-       ath79_ddr_wb_flush(AR724X_DDR_REG_FLUSH_GE0);
-}
-
-static void ar724x_ddr_flush_ge1(void)
-{
-       ath79_ddr_wb_flush(AR724X_DDR_REG_FLUSH_GE1);
-}
-
-static void ar91xx_ddr_flush_ge0(void)
-{
-       ath79_ddr_wb_flush(AR913X_DDR_REG_FLUSH_GE0);
-}
-
-static void ar91xx_ddr_flush_ge1(void)
-{
-       ath79_ddr_wb_flush(AR913X_DDR_REG_FLUSH_GE1);
-}
-
-static void ar933x_ddr_flush_ge0(void)
-{
-       ath79_ddr_wb_flush(AR933X_DDR_REG_FLUSH_GE0);
-}
-
-static void ar933x_ddr_flush_ge1(void)
-{
-       ath79_ddr_wb_flush(AR933X_DDR_REG_FLUSH_GE1);
+       ath79_ddr_wb_flush(1);
 }
 
 static struct resource ath79_eth0_resources[] = {
@@ -512,6 +499,10 @@ struct ag71xx_switch_platform_data ath79_switch_data;
 #define AR934X_PLL_VAL_100     0x00000101
 #define AR934X_PLL_VAL_10      0x00001616
 
+#define QCA956X_PLL_VAL_1000   0x03000000
+#define QCA956X_PLL_VAL_100    0x00000101
+#define QCA956X_PLL_VAL_10     0x00001919
+
 static void __init ath79_init_eth_pll_data(unsigned int id)
 {
        struct ath79_eth_pll_data *pll_data;
@@ -567,13 +558,21 @@ static void __init ath79_init_eth_pll_data(unsigned int id)
        case ATH79_SOC_AR9341:
        case ATH79_SOC_AR9342:
        case ATH79_SOC_AR9344:
+       case ATH79_SOC_QCA9533:
        case ATH79_SOC_QCA9556:
        case ATH79_SOC_QCA9558:
+       case ATH79_SOC_TP9343:
                pll_10 = AR934X_PLL_VAL_10;
                pll_100 = AR934X_PLL_VAL_100;
                pll_1000 = AR934X_PLL_VAL_1000;
                break;
 
+       case ATH79_SOC_QCA956X:
+               pll_10 = QCA956X_PLL_VAL_10;
+               pll_100 = QCA956X_PLL_VAL_100;
+               pll_1000 = QCA956X_PLL_VAL_1000;
+               break;
+
        default:
                BUG();
        }
@@ -624,6 +623,8 @@ 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_QCA9533:
+               case ATH79_SOC_TP9343:
                        pdata->phy_if_mode = PHY_INTERFACE_MODE_MII;
                        break;
 
@@ -646,6 +647,7 @@ static int __init ath79_setup_phy_if_mode(unsigned int id,
 
                case ATH79_SOC_QCA9556:
                case ATH79_SOC_QCA9558:
+               case ATH79_SOC_QCA956X:
                        switch (pdata->phy_if_mode) {
                        case PHY_INTERFACE_MODE_MII:
                        case PHY_INTERFACE_MODE_RGMII:
@@ -684,6 +686,7 @@ 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_TP9343:
                        pdata->phy_if_mode = PHY_INTERFACE_MODE_GMII;
                        break;
 
@@ -693,6 +696,8 @@ static int __init ath79_setup_phy_if_mode(unsigned int id,
                case ATH79_SOC_AR9341:
                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:
@@ -765,6 +770,71 @@ void __init ath79_setup_ar934x_eth_cfg(u32 mask)
        iounmap(base);
 }
 
+void __init ath79_setup_ar934x_eth_rx_delay(unsigned int rxd,
+                                           unsigned int rxdv)
+{
+       void __iomem *base;
+       u32 t;
+
+       rxd &= AR934X_ETH_CFG_RXD_DELAY_MASK;
+       rxdv &= AR934X_ETH_CFG_RDV_DELAY_MASK;
+
+       base = ioremap(AR934X_GMAC_BASE, AR934X_GMAC_SIZE);
+
+       t = __raw_readl(base + AR934X_GMAC_REG_ETH_CFG);
+
+       t &= ~(AR934X_ETH_CFG_RXD_DELAY_MASK << AR934X_ETH_CFG_RXD_DELAY_SHIFT |
+              AR934X_ETH_CFG_RDV_DELAY_MASK << AR934X_ETH_CFG_RDV_DELAY_SHIFT);
+
+       t |= (rxd << AR934X_ETH_CFG_RXD_DELAY_SHIFT |
+             rxdv << AR934X_ETH_CFG_RDV_DELAY_SHIFT);
+
+       __raw_writel(t, base + AR934X_GMAC_REG_ETH_CFG);
+       /* flush write */
+       __raw_readl(base + AR934X_GMAC_REG_ETH_CFG);
+
+       iounmap(base);
+}
+
+void __init ath79_setup_qca955x_eth_cfg(u32 mask)
+{
+       void __iomem *base;
+       u32 t;
+
+       base = ioremap(QCA955X_GMAC_BASE, QCA955X_GMAC_SIZE);
+
+       t = __raw_readl(base + QCA955X_GMAC_REG_ETH_CFG);
+
+       t &= ~(QCA955X_ETH_CFG_RGMII_EN | QCA955X_ETH_CFG_GE0_SGMII);
+
+       t |= mask;
+
+       __raw_writel(t, base + QCA955X_GMAC_REG_ETH_CFG);
+
+       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)
 {
@@ -786,6 +856,9 @@ void __init ath79_register_eth(unsigned int id)
 
        pdata = pdev->dev.platform_data;
 
+       pdata->max_frame_len = 1540;
+       pdata->desc_pktlen_mask = 0xfff;
+
        err = ath79_setup_phy_if_mode(id, pdata);
        if (err) {
                printk(KERN_ERR
@@ -793,26 +866,25 @@ void __init ath79_register_eth(unsigned int id)
                return;
        }
 
+       if (id == 0)
+               pdata->ddr_flush = ath79_ddr_flush_ge0;
+       else
+               pdata->ddr_flush = ath79_ddr_flush_ge1;
+
        switch (ath79_soc) {
        case ATH79_SOC_AR7130:
-               if (id == 0) {
-                       pdata->ddr_flush = ath79_ddr_flush_ge0;
+               if (id == 0)
                        pdata->set_speed = ath79_set_speed_ge0;
-               } else {
-                       pdata->ddr_flush = ath79_ddr_flush_ge1;
+               else
                        pdata->set_speed = ath79_set_speed_ge1;
-               }
                break;
 
        case ATH79_SOC_AR7141:
        case ATH79_SOC_AR7161:
-               if (id == 0) {
-                       pdata->ddr_flush = ath79_ddr_flush_ge0;
+               if (id == 0)
                        pdata->set_speed = ath79_set_speed_ge0;
-               } else {
-                       pdata->ddr_flush = ath79_ddr_flush_ge1;
+               else
                        pdata->set_speed = ath79_set_speed_ge1;
-               }
                pdata->has_gbit = 1;
                break;
 
@@ -820,12 +892,10 @@ void __init ath79_register_eth(unsigned int id)
                if (id == 0) {
                        pdata->reset_bit |= AR724X_RESET_GE0_MDIO |
                                            AR71XX_RESET_GE0_PHY;
-                       pdata->ddr_flush = ar724x_ddr_flush_ge0;
                        pdata->set_speed = ar7242_set_speed_ge0;
                } else {
                        pdata->reset_bit |= AR724X_RESET_GE1_MDIO |
                                            AR71XX_RESET_GE1_PHY;
-                       pdata->ddr_flush = ar724x_ddr_flush_ge1;
                        pdata->set_speed = ath79_set_speed_dummy;
                }
                pdata->has_gbit = 1;
@@ -848,18 +918,17 @@ void __init ath79_register_eth(unsigned int id)
        case ATH79_SOC_AR7240:
                if (id == 0) {
                        pdata->reset_bit |= AR71XX_RESET_GE0_PHY;
-                       pdata->ddr_flush = ar724x_ddr_flush_ge0;
                        pdata->set_speed = ath79_set_speed_dummy;
 
                        pdata->phy_mask = BIT(4);
                } else {
                        pdata->reset_bit |= AR71XX_RESET_GE1_PHY;
-                       pdata->ddr_flush = ar724x_ddr_flush_ge1;
                        pdata->set_speed = ath79_set_speed_dummy;
 
                        pdata->speed = SPEED_1000;
                        pdata->duplex = DUPLEX_FULL;
                        pdata->switch_data = &ath79_switch_data;
+                       pdata->use_flow_control = 1;
 
                        ath79_switch_data.phy_poll_mask |= BIT(4);
                }
@@ -876,27 +945,15 @@ void __init ath79_register_eth(unsigned int id)
                        pdata->fifo_cfg3 = 0x01f00140;
                break;
 
-       case ATH79_SOC_AR9130:
-               if (id == 0) {
-                       pdata->ddr_flush = ar91xx_ddr_flush_ge0;
-                       pdata->set_speed = ar91xx_set_speed_ge0;
-               } else {
-                       pdata->ddr_flush = ar91xx_ddr_flush_ge1;
-                       pdata->set_speed = ar91xx_set_speed_ge1;
-               }
-               pdata->is_ar91xx = 1;
-               break;
-
        case ATH79_SOC_AR9132:
-               if (id == 0) {
-                       pdata->ddr_flush = ar91xx_ddr_flush_ge0;
+               pdata->has_gbit = 1;
+               /* fall through */
+       case ATH79_SOC_AR9130:
+               if (id == 0)
                        pdata->set_speed = ar91xx_set_speed_ge0;
-               } else {
-                       pdata->ddr_flush = ar91xx_ddr_flush_ge1;
+               else
                        pdata->set_speed = ar91xx_set_speed_ge1;
-               }
                pdata->is_ar91xx = 1;
-               pdata->has_gbit = 1;
                break;
 
        case ATH79_SOC_AR9330:
@@ -904,24 +961,23 @@ void __init ath79_register_eth(unsigned int id)
                if (id == 0) {
                        pdata->reset_bit = AR933X_RESET_GE0_MAC |
                                           AR933X_RESET_GE0_MDIO;
-                       pdata->ddr_flush = ar933x_ddr_flush_ge0;
                        pdata->set_speed = ath79_set_speed_dummy;
 
                        pdata->phy_mask = BIT(4);
                } else {
                        pdata->reset_bit = AR933X_RESET_GE1_MAC |
                                           AR933X_RESET_GE1_MDIO;
-                       pdata->ddr_flush = ar933x_ddr_flush_ge1;
                        pdata->set_speed = ath79_set_speed_dummy;
 
                        pdata->speed = SPEED_1000;
+                       pdata->has_gbit = 1;
                        pdata->duplex = DUPLEX_FULL;
                        pdata->switch_data = &ath79_switch_data;
+                       pdata->use_flow_control = 1;
 
                        ath79_switch_data.phy_poll_mask |= BIT(4);
                }
 
-               pdata->has_gbit = 1;
                pdata->is_ar724x = 1;
 
                if (!pdata->fifo_cfg1)
@@ -935,10 +991,14 @@ void __init ath79_register_eth(unsigned int id)
        case ATH79_SOC_AR9341:
        case ATH79_SOC_AR9342:
        case ATH79_SOC_AR9344:
+       case ATH79_SOC_QCA9533:
                if (id == 0) {
                        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;
@@ -951,7 +1011,41 @@ void __init ath79_register_eth(unsigned int id)
                        ath79_device_reset_clear(AR934X_RESET_ETH_SWITCH);
                }
 
-               pdata->ddr_flush = ath79_ddr_no_flush;
+               pdata->has_gbit = 1;
+               pdata->is_ar724x = 1;
+
+               pdata->max_frame_len = SZ_16K - 1;
+               pdata->desc_pktlen_mask = SZ_16K - 1;
+
+               if (!pdata->fifo_cfg1)
+                       pdata->fifo_cfg1 = 0x0010ffff;
+               if (!pdata->fifo_cfg2)
+                       pdata->fifo_cfg2 = 0x015500aa;
+               if (!pdata->fifo_cfg3)
+                       pdata->fifo_cfg3 = 0x01f00140;
+               break;
+
+       case ATH79_SOC_TP9343:
+               if (id == 0) {
+                       pdata->reset_bit = AR933X_RESET_GE0_MAC |
+                                          AR933X_RESET_GE0_MDIO;
+                       pdata->set_speed = ath79_set_speed_dummy;
+
+                       if (!pdata->phy_mask)
+                               pdata->phy_mask = BIT(4);
+               } else {
+                       pdata->reset_bit = AR933X_RESET_GE1_MAC |
+                                          AR933X_RESET_GE1_MDIO;
+                       pdata->set_speed = ath79_set_speed_dummy;
+
+                       pdata->speed = SPEED_1000;
+                       pdata->duplex = DUPLEX_FULL;
+                       pdata->switch_data = &ath79_switch_data;
+                       pdata->use_flow_control = 1;
+
+                       ath79_switch_data.phy_poll_mask |= BIT(4);
+               }
+
                pdata->has_gbit = 1;
                pdata->is_ar724x = 1;
 
@@ -975,7 +1069,56 @@ void __init ath79_register_eth(unsigned int id)
                        pdata->set_speed = qca955x_set_speed_sgmii;
                }
 
-               pdata->ddr_flush = ath79_ddr_no_flush;
+               pdata->has_gbit = 1;
+               pdata->is_ar724x = 1;
+
+               /*
+                * Limit the maximum frame length to 4095 bytes.
+                * Although the documentation says that the hardware
+                * limit is 16383 bytes but that does not work in
+                * practice. It seems that the hardware only updates
+                * the lowest 12 bits of the packet length field
+                * in the RX descriptor.
+                */
+               pdata->max_frame_len = SZ_4K - 1;
+               pdata->desc_pktlen_mask = SZ_16K - 1;
+
+               if (!pdata->fifo_cfg1)
+                       pdata->fifo_cfg1 = 0x0010ffff;
+               if (!pdata->fifo_cfg2)
+                       pdata->fifo_cfg2 = 0x015500aa;
+               if (!pdata->fifo_cfg3)
+                       pdata->fifo_cfg3 = 0x01f00140;
+               break;
+
+       case ATH79_SOC_QCA956X:
+               if (id == 0) {
+                       pdata->reset_bit = QCA955X_RESET_GE0_MAC |
+                                          QCA955X_RESET_GE0_MDIO;
+
+                       if (pdata->phy_if_mode == PHY_INTERFACE_MODE_SGMII)
+                               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;
+
+                       pdata->set_speed = ath79_set_speed_dummy;
+
+                       pdata->switch_data = &ath79_switch_data;
+
+                       pdata->speed = SPEED_1000;
+                       pdata->duplex = DUPLEX_FULL;
+                       pdata->use_flow_control = 1;
+
+                       /* reset the built-in switch */
+                       ath79_device_reset_set(AR934X_RESET_ETH_SWITCH);
+                       ath79_device_reset_clear(AR934X_RESET_ETH_SWITCH);
+               }
+
                pdata->has_gbit = 1;
                pdata->is_ar724x = 1;
 
@@ -1026,6 +1169,8 @@ void __init ath79_register_eth(unsigned int id)
                case ATH79_SOC_AR7241:
                case ATH79_SOC_AR9330:
                case ATH79_SOC_AR9331:
+               case ATH79_SOC_QCA9533:
+               case ATH79_SOC_TP9343:
                        pdata->mii_bus_dev = &ath79_mdio1_device.dev;
                        break;
 
@@ -1034,6 +1179,11 @@ void __init ath79_register_eth(unsigned int id)
                        /* don't assign any MDIO device by default */
                        break;
 
+               case ATH79_SOC_QCA956X:
+                       if (pdata->phy_if_mode != PHY_INTERFACE_MODE_SGMII)
+                               pdata->mii_bus_dev = &ath79_mdio1_device.dev;
+                       break;
+
                default:
                        pdata->mii_bus_dev = &ath79_mdio0_device.dev;
                        break;
@@ -1042,10 +1192,10 @@ void __init ath79_register_eth(unsigned int id)
 
        /* Reset the device */
        ath79_device_reset_set(pdata->reset_bit);
-       mdelay(100);
+       msleep(100);
 
        ath79_device_reset_clear(pdata->reset_bit);
-       mdelay(100);
+       msleep(100);
 
        platform_device_register(pdev);
        ath79_eth_instance++;