| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * |
| * Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org> |
| * Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org> |
| * Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com> |
| */ |
| |
| #include <linux/of_device.h> |
| #include <linux/of_mdio.h> |
| #include <linux/of_net.h> |
| #include <linux/of_address.h> |
| #include <linux/mfd/syscon.h> |
| #include <linux/regmap.h> |
| #include <linux/clk.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/if_vlan.h> |
| #include <linux/reset.h> |
| #include <linux/tcp.h> |
| #include <linux/interrupt.h> |
| #include <linux/pinctrl/devinfo.h> |
| #include <linux/phylink.h> |
| #include <linux/gpio/consumer.h> |
| #include <net/dsa.h> |
| |
| #include "mtk_eth_soc.h" |
| #include "mtk_eth_dbg.h" |
| #include "mtk_eth_reset.h" |
| |
| #if defined(CONFIG_NET_MEDIATEK_HNAT) || defined(CONFIG_NET_MEDIATEK_HNAT_MODULE) |
| #include "mtk_hnat/nf_hnat_mtk.h" |
| #endif |
| |
| #if defined(CONFIG_XFRM_OFFLOAD) |
| #include <crypto/sha.h> |
| #include <net/xfrm.h> |
| #include "mtk_ipsec.h" |
| #endif |
| |
| static int mtk_msg_level = -1; |
| atomic_t reset_lock = ATOMIC_INIT(0); |
| atomic_t force = ATOMIC_INIT(0); |
| |
| module_param_named(msg_level, mtk_msg_level, int, 0); |
| MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)"); |
| DECLARE_COMPLETION(wait_ser_done); |
| |
| #define MTK_ETHTOOL_STAT(x) { #x, \ |
| offsetof(struct mtk_hw_stats, x) / sizeof(u64) } |
| |
| static const struct mtk_reg_map mtk_reg_map = { |
| .tx_irq_mask = 0x1a1c, |
| .tx_irq_status = 0x1a18, |
| .pdma = { |
| .rx_ptr = 0x0900, |
| .rx_cnt_cfg = 0x0904, |
| .pcrx_ptr = 0x0908, |
| .glo_cfg = 0x0a04, |
| .rst_idx = 0x0a08, |
| .delay_irq = 0x0a0c, |
| .irq_status = 0x0a20, |
| .irq_mask = 0x0a28, |
| .int_grp = 0x0a50, |
| .int_grp2 = 0x0a54, |
| }, |
| .qdma = { |
| .qtx_cfg = 0x1800, |
| .qtx_sch = 0x1804, |
| .rx_ptr = 0x1900, |
| .rx_cnt_cfg = 0x1904, |
| .qcrx_ptr = 0x1908, |
| .glo_cfg = 0x1a04, |
| .rst_idx = 0x1a08, |
| .delay_irq = 0x1a0c, |
| .fc_th = 0x1a10, |
| .tx_sch_rate = 0x1a14, |
| .int_grp = 0x1a20, |
| .int_grp2 = 0x1a24, |
| .hred2 = 0x1a44, |
| .ctx_ptr = 0x1b00, |
| .dtx_ptr = 0x1b04, |
| .crx_ptr = 0x1b10, |
| .drx_ptr = 0x1b14, |
| .fq_head = 0x1b20, |
| .fq_tail = 0x1b24, |
| .fq_count = 0x1b28, |
| .fq_blen = 0x1b2c, |
| }, |
| .gdm1_cnt = 0x2400, |
| .gdma_to_ppe0 = 0x4444, |
| .ppe_base = { |
| [0] = 0x0c00, |
| }, |
| .wdma_base = { |
| [0] = 0x2800, |
| [1] = 0x2c00, |
| }, |
| }; |
| |
| static const struct mtk_reg_map mt7628_reg_map = { |
| .tx_irq_mask = 0x0a28, |
| .tx_irq_status = 0x0a20, |
| .pdma = { |
| .rx_ptr = 0x0900, |
| .rx_cnt_cfg = 0x0904, |
| .pcrx_ptr = 0x0908, |
| .glo_cfg = 0x0a04, |
| .rst_idx = 0x0a08, |
| .delay_irq = 0x0a0c, |
| .irq_status = 0x0a20, |
| .irq_mask = 0x0a28, |
| .int_grp = 0x0a50, |
| .int_grp2 = 0x0a54, |
| }, |
| }; |
| |
| static const struct mtk_reg_map mt7986_reg_map = { |
| .tx_irq_mask = 0x461c, |
| .tx_irq_status = 0x4618, |
| .pdma = { |
| .rx_ptr = 0x4100, |
| .rx_cnt_cfg = 0x4104, |
| .pcrx_ptr = 0x4108, |
| .glo_cfg = 0x4204, |
| .rst_idx = 0x4208, |
| .delay_irq = 0x420c, |
| .irq_status = 0x4220, |
| .irq_mask = 0x4228, |
| .int_grp = 0x4250, |
| .int_grp2 = 0x4254, |
| }, |
| .qdma = { |
| .qtx_cfg = 0x4400, |
| .qtx_sch = 0x4404, |
| .rx_ptr = 0x4500, |
| .rx_cnt_cfg = 0x4504, |
| .qcrx_ptr = 0x4508, |
| .glo_cfg = 0x4604, |
| .rst_idx = 0x4608, |
| .delay_irq = 0x460c, |
| .fc_th = 0x4610, |
| .int_grp = 0x4620, |
| .int_grp2 = 0x4624, |
| .hred2 = 0x4644, |
| .ctx_ptr = 0x4700, |
| .dtx_ptr = 0x4704, |
| .crx_ptr = 0x4710, |
| .drx_ptr = 0x4714, |
| .fq_head = 0x4720, |
| .fq_tail = 0x4724, |
| .fq_count = 0x4728, |
| .fq_blen = 0x472c, |
| .tx_sch_rate = 0x4798, |
| }, |
| .gdm1_cnt = 0x1c00, |
| .gdma_to_ppe0 = 0x3333, |
| .ppe_base = { |
| [0] = 0x2000, |
| [1] = 0x2400, |
| }, |
| .wdma_base = { |
| [0] = 0x4800, |
| [1] = 0x4c00, |
| }, |
| }; |
| |
| static const struct mtk_reg_map mt7988_reg_map = { |
| .tx_irq_mask = 0x461c, |
| .tx_irq_status = 0x4618, |
| .pdma = { |
| .rx_ptr = 0x6900, |
| .rx_cnt_cfg = 0x6904, |
| .pcrx_ptr = 0x6908, |
| .glo_cfg = 0x6a04, |
| .rst_idx = 0x6a08, |
| .delay_irq = 0x6a0c, |
| .irq_status = 0x6a20, |
| .irq_mask = 0x6a28, |
| .int_grp = 0x6a50, |
| .int_grp2 = 0x6a54, |
| }, |
| .qdma = { |
| .qtx_cfg = 0x4400, |
| .qtx_sch = 0x4404, |
| .rx_ptr = 0x4500, |
| .rx_cnt_cfg = 0x4504, |
| .qcrx_ptr = 0x4508, |
| .glo_cfg = 0x4604, |
| .rst_idx = 0x4608, |
| .delay_irq = 0x460c, |
| .fc_th = 0x4610, |
| .int_grp = 0x4620, |
| .int_grp2 = 0x4624, |
| .hred2 = 0x4644, |
| .ctx_ptr = 0x4700, |
| .dtx_ptr = 0x4704, |
| .crx_ptr = 0x4710, |
| .drx_ptr = 0x4714, |
| .fq_head = 0x4720, |
| .fq_tail = 0x4724, |
| .fq_count = 0x4728, |
| .fq_blen = 0x472c, |
| .tx_sch_rate = 0x4798, |
| }, |
| .gdm1_cnt = 0x1c00, |
| .gdma_to_ppe0 = 0x3333, |
| .ppe_base = { |
| [0] = 0x2000, |
| [1] = 0x2400, |
| [2] = 0x2c00, |
| }, |
| .wdma_base = { |
| [0] = 0x4800, |
| [1] = 0x4c00, |
| [2] = 0x5000, |
| }, |
| }; |
| |
| /* strings used by ethtool */ |
| static const struct mtk_ethtool_stats { |
| char str[ETH_GSTRING_LEN]; |
| u32 offset; |
| } mtk_ethtool_stats[] = { |
| MTK_ETHTOOL_STAT(tx_bytes), |
| MTK_ETHTOOL_STAT(tx_packets), |
| MTK_ETHTOOL_STAT(tx_skip), |
| MTK_ETHTOOL_STAT(tx_collisions), |
| MTK_ETHTOOL_STAT(rx_bytes), |
| MTK_ETHTOOL_STAT(rx_packets), |
| MTK_ETHTOOL_STAT(rx_overflow), |
| MTK_ETHTOOL_STAT(rx_fcs_errors), |
| MTK_ETHTOOL_STAT(rx_short_errors), |
| MTK_ETHTOOL_STAT(rx_long_errors), |
| MTK_ETHTOOL_STAT(rx_checksum_errors), |
| MTK_ETHTOOL_STAT(rx_flow_control_packets), |
| }; |
| |
| static const char * const mtk_clks_source_name[] = { |
| "ethif", "sgmiitop", "esw", "gp0", "gp1", "gp2", "gp3", |
| "xgp1", "xgp2", "xgp3", "crypto", "fe", "trgpll", |
| "sgmii_tx250m", "sgmii_rx250m", "sgmii_cdr_ref", "sgmii_cdr_fb", |
| "sgmii2_tx250m", "sgmii2_rx250m", "sgmii2_cdr_ref", "sgmii2_cdr_fb", |
| "sgmii_ck", "eth2pll", "wocpu0", "wocpu1", |
| "ethwarp_wocpu2", "ethwarp_wocpu1", "ethwarp_wocpu0", |
| "top_usxgmii0_sel", "top_usxgmii1_sel", "top_sgm0_sel", "top_sgm1_sel", |
| "top_xfi_phy0_xtal_sel", "top_xfi_phy1_xtal_sel", "top_eth_gmii_sel", |
| "top_eth_refck_50m_sel", "top_eth_sys_200m_sel", "top_eth_sys_sel", |
| "top_eth_xgmii_sel", "top_eth_mii_sel", "top_netsys_sel", |
| "top_netsys_500m_sel", "top_netsys_pao_2x_sel", |
| "top_netsys_sync_250m_sel", "top_netsys_ppefb_250m_sel", |
| "top_netsys_warp_sel", |
| }; |
| |
| void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg) |
| { |
| __raw_writel(val, eth->base + reg); |
| } |
| |
| u32 mtk_r32(struct mtk_eth *eth, unsigned reg) |
| { |
| return __raw_readl(eth->base + reg); |
| } |
| |
| u32 mtk_m32(struct mtk_eth *eth, u32 mask, u32 set, unsigned reg) |
| { |
| u32 val; |
| |
| val = mtk_r32(eth, reg); |
| val &= ~mask; |
| val |= set; |
| mtk_w32(eth, val, reg); |
| return reg; |
| } |
| |
| static int mtk_mdio_busy_wait(struct mtk_eth *eth) |
| { |
| unsigned long t_start = jiffies; |
| |
| while (1) { |
| if (!(mtk_r32(eth, MTK_PHY_IAC) & PHY_IAC_ACCESS)) |
| return 0; |
| if (time_after(jiffies, t_start + PHY_IAC_TIMEOUT)) |
| break; |
| cond_resched(); |
| } |
| |
| dev_err(eth->dev, "mdio: MDIO timeout\n"); |
| return -1; |
| } |
| |
| u32 _mtk_mdio_write(struct mtk_eth *eth, int phy_addr, |
| int phy_reg, u16 write_data) |
| { |
| if (mtk_mdio_busy_wait(eth)) |
| return -1; |
| |
| write_data &= 0xffff; |
| |
| if (phy_reg & MII_ADDR_C45) { |
| mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START_C45 | PHY_IAC_ADDR_C45 | |
| ((mdiobus_c45_devad(phy_reg) & 0x1f) << PHY_IAC_REG_SHIFT) | |
| ((phy_addr & 0x1f) << PHY_IAC_ADDR_SHIFT) | mdiobus_c45_regad(phy_reg), |
| MTK_PHY_IAC); |
| |
| if (mtk_mdio_busy_wait(eth)) |
| return -1; |
| |
| mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START_C45 | PHY_IAC_WRITE | |
| ((mdiobus_c45_devad(phy_reg) & 0x1f) << PHY_IAC_REG_SHIFT) | |
| ((phy_addr & 0x1f) << PHY_IAC_ADDR_SHIFT) | write_data, |
| MTK_PHY_IAC); |
| } else { |
| mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START | PHY_IAC_WRITE | |
| ((phy_reg & 0x1f) << PHY_IAC_REG_SHIFT) | |
| ((phy_addr & 0x1f) << PHY_IAC_ADDR_SHIFT) | write_data, |
| MTK_PHY_IAC); |
| } |
| |
| if (mtk_mdio_busy_wait(eth)) |
| return -1; |
| |
| return 0; |
| } |
| |
| u32 _mtk_mdio_read(struct mtk_eth *eth, int phy_addr, int phy_reg) |
| { |
| u32 d; |
| |
| if (mtk_mdio_busy_wait(eth)) |
| return 0xffff; |
| |
| if (phy_reg & MII_ADDR_C45) { |
| mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START_C45 | PHY_IAC_ADDR_C45 | |
| ((mdiobus_c45_devad(phy_reg) & 0x1f) << PHY_IAC_REG_SHIFT) | |
| ((phy_addr & 0x1f) << PHY_IAC_ADDR_SHIFT) | mdiobus_c45_regad(phy_reg), |
| MTK_PHY_IAC); |
| |
| if (mtk_mdio_busy_wait(eth)) |
| return 0xffff; |
| |
| mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START_C45 | PHY_IAC_READ_C45 | |
| ((mdiobus_c45_devad(phy_reg) & 0x1f) << PHY_IAC_REG_SHIFT) | |
| ((phy_addr & 0x1f) << PHY_IAC_ADDR_SHIFT), |
| MTK_PHY_IAC); |
| } else { |
| mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START | PHY_IAC_READ | |
| ((phy_reg & 0x1f) << PHY_IAC_REG_SHIFT) | |
| ((phy_addr & 0x1f) << PHY_IAC_ADDR_SHIFT), |
| MTK_PHY_IAC); |
| } |
| |
| if (mtk_mdio_busy_wait(eth)) |
| return 0xffff; |
| |
| d = mtk_r32(eth, MTK_PHY_IAC) & 0xffff; |
| |
| return d; |
| } |
| |
| static int mtk_mdio_write(struct mii_bus *bus, int phy_addr, |
| int phy_reg, u16 val) |
| { |
| struct mtk_eth *eth = bus->priv; |
| |
| return _mtk_mdio_write(eth, phy_addr, phy_reg, val); |
| } |
| |
| static int mtk_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg) |
| { |
| struct mtk_eth *eth = bus->priv; |
| |
| return _mtk_mdio_read(eth, phy_addr, phy_reg); |
| } |
| |
| static int mtk_mdio_reset(struct mii_bus *bus) |
| { |
| /* The mdiobus_register will trigger a reset pulse when enabling Bus reset, |
| * we just need to wait until device ready. |
| */ |
| mdelay(20); |
| |
| return 0; |
| } |
| |
| static int mt7621_gmac0_rgmii_adjust(struct mtk_eth *eth, |
| phy_interface_t interface) |
| { |
| u32 val = 0; |
| |
| /* Check DDR memory type. |
| * Currently TRGMII mode with DDR2 memory is not supported. |
| */ |
| regmap_read(eth->ethsys, ETHSYS_SYSCFG, &val); |
| if (interface == PHY_INTERFACE_MODE_TRGMII && |
| val & SYSCFG_DRAM_TYPE_DDR2) { |
| dev_err(eth->dev, |
| "TRGMII mode with DDR2 memory is not supported!\n"); |
| return -EOPNOTSUPP; |
| } |
| |
| val = (interface == PHY_INTERFACE_MODE_TRGMII) ? |
| ETHSYS_TRGMII_MT7621_DDR_PLL : 0; |
| |
| regmap_update_bits(eth->ethsys, ETHSYS_CLKCFG0, |
| ETHSYS_TRGMII_MT7621_MASK, val); |
| |
| return 0; |
| } |
| |
| static void mtk_gmac0_rgmii_adjust(struct mtk_eth *eth, |
| phy_interface_t interface, int speed) |
| { |
| u32 val; |
| int ret; |
| |
| if (interface == PHY_INTERFACE_MODE_TRGMII) { |
| mtk_w32(eth, TRGMII_MODE, INTF_MODE); |
| val = 500000000; |
| ret = clk_set_rate(eth->clks[MTK_CLK_TRGPLL], val); |
| if (ret) |
| dev_err(eth->dev, "Failed to set trgmii pll: %d\n", ret); |
| return; |
| } |
| |
| val = (speed == SPEED_1000) ? |
| INTF_MODE_RGMII_1000 : INTF_MODE_RGMII_10_100; |
| mtk_w32(eth, val, INTF_MODE); |
| |
| regmap_update_bits(eth->ethsys, ETHSYS_CLKCFG0, |
| ETHSYS_TRGMII_CLK_SEL362_5, |
| ETHSYS_TRGMII_CLK_SEL362_5); |
| |
| val = (speed == SPEED_1000) ? 250000000 : 500000000; |
| ret = clk_set_rate(eth->clks[MTK_CLK_TRGPLL], val); |
| if (ret) |
| dev_err(eth->dev, "Failed to set trgmii pll: %d\n", ret); |
| |
| val = (speed == SPEED_1000) ? |
| RCK_CTRL_RGMII_1000 : RCK_CTRL_RGMII_10_100; |
| mtk_w32(eth, val, TRGMII_RCK_CTRL); |
| |
| val = (speed == SPEED_1000) ? |
| TCK_CTRL_RGMII_1000 : TCK_CTRL_RGMII_10_100; |
| mtk_w32(eth, val, TRGMII_TCK_CTRL); |
| } |
| |
| static void mtk_setup_bridge_switch(struct mtk_eth *eth) |
| { |
| int val; |
| |
| /* Force Port1 XGMAC Link Up */ |
| val = mtk_r32(eth, MTK_XGMAC_STS(MTK_GMAC1_ID)); |
| mtk_w32(eth, val | MTK_XGMAC_FORCE_LINK(MTK_GMAC1_ID), |
| MTK_XGMAC_STS(MTK_GMAC1_ID)); |
| |
| /* Adjust GSW bridge IPG to 11*/ |
| val = mtk_r32(eth, MTK_GSW_CFG); |
| val &= ~(GSWTX_IPG_MASK | GSWRX_IPG_MASK); |
| val |= (GSW_IPG_11 << GSWTX_IPG_SHIFT) | |
| (GSW_IPG_11 << GSWRX_IPG_SHIFT); |
| mtk_w32(eth, val, MTK_GSW_CFG); |
| } |
| |
| static bool mtk_check_gmac23_idle(struct mtk_mac *mac) |
| { |
| u32 mac_fsm, gdm_fsm; |
| |
| mac_fsm = mtk_r32(mac->hw, MTK_MAC_FSM(mac->id)); |
| |
| switch (mac->id) { |
| case MTK_GMAC2_ID: |
| gdm_fsm = mtk_r32(mac->hw, MTK_FE_GDM2_FSM); |
| break; |
| case MTK_GMAC3_ID: |
| gdm_fsm = mtk_r32(mac->hw, MTK_FE_GDM3_FSM); |
| break; |
| default: |
| return true; |
| }; |
| |
| if ((mac_fsm & 0xFFFF0000) == 0x01010000 && |
| (gdm_fsm & 0xFFFF0000) == 0x00000000) |
| return true; |
| |
| return false; |
| } |
| |
| static void mtk_setup_eee(struct mtk_mac *mac, bool enable) |
| { |
| struct mtk_eth *eth = mac->hw; |
| u32 mcr, mcr_cur; |
| u32 val; |
| |
| mcr = mcr_cur = mtk_r32(eth, MTK_MAC_MCR(mac->id)); |
| mcr &= ~(MAC_MCR_FORCE_EEE100 | MAC_MCR_FORCE_EEE1000); |
| |
| if (enable) { |
| mac->tx_lpi_enabled = 1; |
| |
| val = FIELD_PREP(MAC_EEE_WAKEUP_TIME_1000, 19) | |
| FIELD_PREP(MAC_EEE_WAKEUP_TIME_100, 33) | |
| FIELD_PREP(MAC_EEE_LPI_TXIDLE_THD, |
| mac->tx_lpi_timer) | |
| FIELD_PREP(MAC_EEE_RESV0, 14); |
| mtk_w32(eth, val, MTK_MAC_EEE(mac->id)); |
| |
| switch (mac->speed) { |
| case SPEED_1000: |
| mcr |= MAC_MCR_FORCE_EEE1000; |
| break; |
| case SPEED_100: |
| mcr |= MAC_MCR_FORCE_EEE100; |
| break; |
| }; |
| } else { |
| mac->tx_lpi_enabled = 0; |
| |
| mtk_w32(eth, 0x00000002, MTK_MAC_EEE(mac->id)); |
| } |
| |
| /* Only update control register when needed! */ |
| if (mcr != mcr_cur) |
| mtk_w32(eth, mcr, MTK_MAC_MCR(mac->id)); |
| } |
| |
| static int mtk_get_hwver(struct mtk_eth *eth) |
| { |
| struct device_node *np; |
| struct regmap *hwver; |
| u32 info = 0; |
| |
| eth->hwver = MTK_HWID_V1; |
| |
| np = of_parse_phandle(eth->dev->of_node, "mediatek,hwver", 0); |
| if (!np) |
| return -EINVAL; |
| |
| hwver = syscon_node_to_regmap(np); |
| if (IS_ERR(hwver)) |
| return PTR_ERR(hwver); |
| |
| regmap_read(hwver, 0x8, &info); |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V3)) |
| eth->hwver = FIELD_GET(HWVER_BIT_NETSYS_3, info); |
| else |
| eth->hwver = FIELD_GET(HWVER_BIT_NETSYS_1_2, info); |
| |
| of_node_put(np); |
| |
| return 0; |
| } |
| |
| static struct phylink_pcs *mtk_mac_select_pcs(struct phylink_config *config, |
| phy_interface_t interface) |
| { |
| struct mtk_mac *mac = container_of(config, struct mtk_mac, |
| phylink_config); |
| struct mtk_eth *eth = mac->hw; |
| unsigned int sid; |
| |
| if (interface == PHY_INTERFACE_MODE_SGMII || |
| phy_interface_mode_is_8023z(interface)) { |
| sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ? |
| 0 : mtk_mac2xgmii_id(eth, mac->id); |
| |
| return mtk_sgmii_select_pcs(eth->sgmii, sid); |
| } else if (interface == PHY_INTERFACE_MODE_USXGMII || |
| interface == PHY_INTERFACE_MODE_10GKR || |
| interface == PHY_INTERFACE_MODE_5GBASER) { |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V3) && |
| mac->id != MTK_GMAC1_ID) { |
| sid = mtk_mac2xgmii_id(eth, mac->id); |
| |
| return mtk_usxgmii_select_pcs(eth->usxgmii, sid); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| static void mtk_mac_config(struct phylink_config *config, unsigned int mode, |
| const struct phylink_link_state *state) |
| { |
| struct mtk_mac *mac = container_of(config, struct mtk_mac, |
| phylink_config); |
| struct mtk_eth *eth = mac->hw; |
| u32 sid, i; |
| int val = 0, ge_mode, force_link, err = 0; |
| unsigned int mac_type = mac->type; |
| |
| /* MT76x8 has no hardware settings between for the MAC */ |
| if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628) && |
| mac->interface != state->interface) { |
| /* Setup soc pin functions */ |
| switch (state->interface) { |
| case PHY_INTERFACE_MODE_TRGMII: |
| if (mac->id) |
| goto err_phy; |
| if (!MTK_HAS_CAPS(mac->hw->soc->caps, |
| MTK_GMAC1_TRGMII)) |
| goto err_phy; |
| /* fall through */ |
| case PHY_INTERFACE_MODE_RGMII_TXID: |
| case PHY_INTERFACE_MODE_RGMII_RXID: |
| case PHY_INTERFACE_MODE_RGMII_ID: |
| case PHY_INTERFACE_MODE_RGMII: |
| case PHY_INTERFACE_MODE_MII: |
| case PHY_INTERFACE_MODE_REVMII: |
| case PHY_INTERFACE_MODE_RMII: |
| mac->type = MTK_GDM_TYPE; |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_RGMII)) { |
| err = mtk_gmac_rgmii_path_setup(eth, mac->id); |
| if (err) |
| goto init_err; |
| } |
| break; |
| case PHY_INTERFACE_MODE_1000BASEX: |
| case PHY_INTERFACE_MODE_2500BASEX: |
| case PHY_INTERFACE_MODE_SGMII: |
| mac->type = MTK_GDM_TYPE; |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_SGMII)) { |
| err = mtk_gmac_sgmii_path_setup(eth, mac->id); |
| if (err) |
| goto init_err; |
| } |
| break; |
| case PHY_INTERFACE_MODE_GMII: |
| mac->type = MTK_GDM_TYPE; |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_GEPHY)) { |
| err = mtk_gmac_gephy_path_setup(eth, mac->id); |
| if (err) |
| goto init_err; |
| } |
| break; |
| case PHY_INTERFACE_MODE_XGMII: |
| mac->type = MTK_XGDM_TYPE; |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_XGMII)) { |
| err = mtk_gmac_xgmii_path_setup(eth, mac->id); |
| if (err) |
| goto init_err; |
| } |
| break; |
| case PHY_INTERFACE_MODE_USXGMII: |
| case PHY_INTERFACE_MODE_10GKR: |
| case PHY_INTERFACE_MODE_5GBASER: |
| mac->type = MTK_XGDM_TYPE; |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_USXGMII)) { |
| err = mtk_gmac_usxgmii_path_setup(eth, mac->id); |
| if (err) |
| goto init_err; |
| } |
| break; |
| default: |
| goto err_phy; |
| } |
| |
| /* Setup clock for 1st gmac */ |
| if (!mac->id && state->interface != PHY_INTERFACE_MODE_SGMII && |
| !phy_interface_mode_is_8023z(state->interface) && |
| MTK_HAS_CAPS(mac->hw->soc->caps, MTK_GMAC1_TRGMII)) { |
| if (MTK_HAS_CAPS(mac->hw->soc->caps, |
| MTK_TRGMII_MT7621_CLK)) { |
| if (mt7621_gmac0_rgmii_adjust(mac->hw, |
| state->interface)) |
| goto err_phy; |
| } else { |
| mtk_gmac0_rgmii_adjust(mac->hw, |
| state->interface, |
| state->speed); |
| |
| /* mt7623_pad_clk_setup */ |
| for (i = 0 ; i < NUM_TRGMII_CTRL; i++) |
| mtk_w32(mac->hw, |
| TD_DM_DRVP(8) | TD_DM_DRVN(8), |
| TRGMII_TD_ODT(i)); |
| |
| /* Assert/release MT7623 RXC reset */ |
| mtk_m32(mac->hw, 0, RXC_RST | RXC_DQSISEL, |
| TRGMII_RCK_CTRL); |
| mtk_m32(mac->hw, RXC_RST, 0, TRGMII_RCK_CTRL); |
| } |
| } |
| |
| ge_mode = 0; |
| switch (state->interface) { |
| case PHY_INTERFACE_MODE_MII: |
| case PHY_INTERFACE_MODE_GMII: |
| ge_mode = 1; |
| break; |
| case PHY_INTERFACE_MODE_REVMII: |
| ge_mode = 2; |
| break; |
| case PHY_INTERFACE_MODE_RMII: |
| if (mac->id) |
| goto err_phy; |
| ge_mode = 3; |
| break; |
| default: |
| break; |
| } |
| |
| /* put the gmac into the right mode */ |
| spin_lock(ð->syscfg0_lock); |
| regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val); |
| val &= ~SYSCFG0_GE_MODE(SYSCFG0_GE_MASK, mac->id); |
| val |= SYSCFG0_GE_MODE(ge_mode, mac->id); |
| regmap_write(eth->ethsys, ETHSYS_SYSCFG0, val); |
| spin_unlock(ð->syscfg0_lock); |
| |
| mac->interface = state->interface; |
| } |
| |
| /* SGMII */ |
| if (state->interface == PHY_INTERFACE_MODE_SGMII || |
| phy_interface_mode_is_8023z(state->interface)) { |
| /* The path GMAC to SGMII will be enabled once the SGMIISYS is |
| * being setup done. |
| */ |
| spin_lock(ð->syscfg0_lock); |
| regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val); |
| |
| regmap_update_bits(eth->ethsys, ETHSYS_SYSCFG0, |
| SYSCFG0_SGMII_MASK, |
| ~(u32)SYSCFG0_SGMII_MASK); |
| |
| /* Decide how GMAC and SGMIISYS be mapped */ |
| sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ? |
| 0 : mac->id; |
| |
| /* Save the syscfg0 value for mac_finish */ |
| mac->syscfg0 = val; |
| spin_unlock(ð->syscfg0_lock); |
| } else if (state->interface == PHY_INTERFACE_MODE_USXGMII || |
| state->interface == PHY_INTERFACE_MODE_10GKR || |
| state->interface == PHY_INTERFACE_MODE_5GBASER) { |
| /* Nothing to do */ |
| } else if (phylink_autoneg_inband(mode)) { |
| dev_err(eth->dev, |
| "In-band mode not supported in non SGMII mode!\n"); |
| return; |
| } |
| |
| /* Setup gmac */ |
| if (mac->type == MTK_XGDM_TYPE) { |
| mtk_w32(mac->hw, MTK_GDMA_XGDM_SEL, MTK_GDMA_EG_CTRL(mac->id)); |
| mtk_w32(mac->hw, MAC_MCR_FORCE_LINK_DOWN, MTK_MAC_MCR(mac->id)); |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V3)) { |
| switch (mac->id) { |
| case MTK_GMAC1_ID: |
| mtk_setup_bridge_switch(eth); |
| break; |
| case MTK_GMAC2_ID: |
| force_link = (mac->interface == |
| PHY_INTERFACE_MODE_XGMII) ? |
| MTK_XGMAC_FORCE_LINK(mac->id) : 0; |
| val = mtk_r32(eth, MTK_XGMAC_STS(mac->id)); |
| mtk_w32(eth, val | force_link, |
| MTK_XGMAC_STS(mac->id)); |
| break; |
| case MTK_GMAC3_ID: |
| val = mtk_r32(eth, MTK_XGMAC_STS(mac->id)); |
| mtk_w32(eth, |
| val | MTK_XGMAC_FORCE_LINK(mac->id), |
| MTK_XGMAC_STS(mac->id)); |
| break; |
| } |
| } |
| } else if (mac->type == MTK_GDM_TYPE) { |
| val = mtk_r32(eth, MTK_GDMA_EG_CTRL(mac->id)); |
| mtk_w32(eth, val & ~MTK_GDMA_XGDM_SEL, |
| MTK_GDMA_EG_CTRL(mac->id)); |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V3)) { |
| switch (mac->id) { |
| case MTK_GMAC2_ID: |
| case MTK_GMAC3_ID: |
| val = mtk_r32(eth, MTK_XGMAC_STS(mac->id)); |
| mtk_w32(eth, |
| val & ~MTK_XGMAC_FORCE_LINK(mac->id), |
| MTK_XGMAC_STS(mac->id)); |
| break; |
| } |
| } |
| |
| /* FIXME: In current hardware design, we have to reset FE |
| * when swtiching XGDM to GDM. Therefore, here trigger an SER |
| * to let GDM go back to the initial state. |
| */ |
| if (mac->type != mac_type && !mtk_check_gmac23_idle(mac)) { |
| if (!test_bit(MTK_RESETTING, &mac->hw->state)) { |
| atomic_inc(&force); |
| schedule_work(ð->pending_work); |
| } |
| } |
| } |
| |
| return; |
| |
| err_phy: |
| dev_err(eth->dev, "%s: GMAC%d mode %s not supported!\n", __func__, |
| mac->id, phy_modes(state->interface)); |
| return; |
| |
| init_err: |
| dev_err(eth->dev, "%s: GMAC%d mode %s err: %d!\n", __func__, |
| mac->id, phy_modes(state->interface), err); |
| } |
| |
| static int mtk_mac_finish(struct phylink_config *config, unsigned int mode, |
| phy_interface_t interface) |
| { |
| struct mtk_mac *mac = container_of(config, struct mtk_mac, |
| phylink_config); |
| struct mtk_eth *eth = mac->hw; |
| |
| /* Enable SGMII */ |
| if (interface == PHY_INTERFACE_MODE_SGMII || |
| phy_interface_mode_is_8023z(interface)) |
| regmap_update_bits(eth->ethsys, ETHSYS_SYSCFG0, |
| SYSCFG0_SGMII_MASK, mac->syscfg0); |
| |
| return 0; |
| } |
| |
| static int mtk_mac_pcs_get_state(struct phylink_config *config, |
| struct phylink_link_state *state) |
| { |
| struct mtk_mac *mac = container_of(config, struct mtk_mac, |
| phylink_config); |
| |
| if (mac->type == MTK_XGDM_TYPE) { |
| u32 sts = mtk_r32(mac->hw, MTK_XGMAC_STS(mac->id)); |
| |
| if (mac->id == MTK_GMAC2_ID) |
| sts = sts >> 16; |
| |
| state->duplex = DUPLEX_FULL; |
| |
| switch (FIELD_GET(MTK_USXGMII_PCS_MODE, sts)) { |
| case 0: |
| state->speed = SPEED_10000; |
| break; |
| case 1: |
| state->speed = SPEED_5000; |
| break; |
| case 2: |
| state->speed = SPEED_2500; |
| break; |
| case 3: |
| state->speed = SPEED_1000; |
| break; |
| } |
| |
| state->interface = mac->interface; |
| state->link = FIELD_GET(MTK_USXGMII_PCS_LINK, sts); |
| } else if (mac->type == MTK_GDM_TYPE) { |
| struct mtk_eth *eth = mac->hw; |
| struct mtk_sgmii *ss = eth->sgmii; |
| u32 id = mtk_mac2xgmii_id(eth, mac->id); |
| u32 pmsr = mtk_r32(mac->hw, MTK_MAC_MSR(mac->id)); |
| u32 bm, adv, rgc3, sgm_mode; |
| |
| state->interface = mac->interface; |
| |
| regmap_read(ss->pcs[id].regmap, SGMSYS_PCS_CONTROL_1, &bm); |
| if (bm & SGMII_AN_ENABLE) { |
| regmap_read(ss->pcs[id].regmap, |
| SGMSYS_PCS_ADVERTISE, &adv); |
| |
| phylink_mii_c22_pcs_decode_state( |
| state, |
| FIELD_GET(SGMII_BMSR, bm), |
| FIELD_GET(SGMII_LPA, adv)); |
| } else { |
| state->link = !!(bm & SGMII_LINK_STATYS); |
| |
| regmap_read(ss->pcs[id].regmap, |
| SGMSYS_SGMII_MODE, &sgm_mode); |
| |
| switch (sgm_mode & SGMII_SPEED_MASK) { |
| case SGMII_SPEED_10: |
| state->speed = SPEED_10; |
| break; |
| case SGMII_SPEED_100: |
| state->speed = SPEED_100; |
| break; |
| case SGMII_SPEED_1000: |
| regmap_read(ss->pcs[id].regmap, |
| ss->pcs[id].ana_rgc3, &rgc3); |
| rgc3 = FIELD_GET(RG_PHY_SPEED_3_125G, rgc3); |
| state->speed = rgc3 ? SPEED_2500 : SPEED_1000; |
| break; |
| } |
| |
| if (sgm_mode & SGMII_DUPLEX_HALF) |
| state->duplex = DUPLEX_HALF; |
| else |
| state->duplex = DUPLEX_FULL; |
| } |
| |
| state->pause &= (MLO_PAUSE_RX | MLO_PAUSE_TX); |
| if (pmsr & MAC_MSR_RX_FC) |
| state->pause |= MLO_PAUSE_RX; |
| if (pmsr & MAC_MSR_TX_FC) |
| state->pause |= MLO_PAUSE_TX; |
| } |
| |
| return 1; |
| } |
| |
| static void mtk_mac_link_down(struct phylink_config *config, unsigned int mode, |
| phy_interface_t interface) |
| { |
| struct mtk_mac *mac = container_of(config, struct mtk_mac, |
| phylink_config); |
| u32 mcr; |
| |
| if (mac->type == MTK_GDM_TYPE) { |
| mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); |
| mcr &= ~(MAC_MCR_TX_EN | MAC_MCR_RX_EN); |
| mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id)); |
| } else if (mac->type == MTK_XGDM_TYPE && mac->id != MTK_GMAC1_ID) { |
| mcr = mtk_r32(mac->hw, MTK_XMAC_MCR(mac->id)); |
| |
| mcr &= 0xfffffff0; |
| mcr |= XMAC_MCR_TRX_DISABLE; |
| mtk_w32(mac->hw, mcr, MTK_XMAC_MCR(mac->id)); |
| } |
| } |
| |
| static void mtk_mac_link_up(struct phylink_config *config, unsigned int mode, |
| phy_interface_t interface, |
| struct phy_device *phy) |
| { |
| struct mtk_mac *mac = container_of(config, struct mtk_mac, |
| phylink_config); |
| u32 mcr, mcr_cur; |
| |
| mac->speed = speed; |
| |
| if (mac->type == MTK_GDM_TYPE) { |
| mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); |
| mcr = mcr_cur; |
| mcr &= ~(MAC_MCR_SPEED_100 | MAC_MCR_SPEED_1000 | |
| MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_TX_FC | |
| MAC_MCR_FORCE_RX_FC); |
| mcr |= MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG | MAC_MCR_FORCE_MODE | |
| MAC_MCR_BACKOFF_EN | MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_LINK; |
| |
| /* Configure speed */ |
| switch (speed) { |
| case SPEED_2500: |
| case SPEED_1000: |
| mcr |= MAC_MCR_SPEED_1000; |
| break; |
| case SPEED_100: |
| mcr |= MAC_MCR_SPEED_100; |
| break; |
| } |
| |
| /* Configure duplex */ |
| if (duplex == DUPLEX_FULL) |
| mcr |= MAC_MCR_FORCE_DPX; |
| |
| /* Configure pause modes - |
| * phylink will avoid these for half duplex |
| */ |
| if (tx_pause) |
| mcr |= MAC_MCR_FORCE_TX_FC; |
| if (rx_pause) |
| mcr |= MAC_MCR_FORCE_RX_FC; |
| |
| mcr |= MAC_MCR_TX_EN | MAC_MCR_RX_EN; |
| |
| /* Only update control register when needed! */ |
| if (mcr != mcr_cur) |
| mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id)); |
| |
| if (mode == MLO_AN_PHY && phy) |
| mtk_setup_eee(mac, phy_init_eee(phy, false) >= 0); |
| } else if (mac->type == MTK_XGDM_TYPE && mac->id != MTK_GMAC1_ID) { |
| mcr = mtk_r32(mac->hw, MTK_XMAC_MCR(mac->id)); |
| |
| mcr &= ~(XMAC_MCR_FORCE_TX_FC | XMAC_MCR_FORCE_RX_FC); |
| /* Configure pause modes - |
| * phylink will avoid these for half duplex |
| */ |
| if (tx_pause) |
| mcr |= XMAC_MCR_FORCE_TX_FC; |
| if (rx_pause) |
| mcr |= XMAC_MCR_FORCE_RX_FC; |
| |
| mcr &= ~(XMAC_MCR_TRX_DISABLE); |
| mtk_w32(mac->hw, mcr, MTK_XMAC_MCR(mac->id)); |
| } |
| } |
| |
| static void mtk_validate(struct phylink_config *config, |
| unsigned long *supported, |
| struct phylink_link_state *state) |
| { |
| struct mtk_mac *mac = container_of(config, struct mtk_mac, |
| phylink_config); |
| __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, }; |
| |
| if (state->interface != PHY_INTERFACE_MODE_NA && |
| state->interface != PHY_INTERFACE_MODE_MII && |
| state->interface != PHY_INTERFACE_MODE_GMII && |
| !(MTK_HAS_CAPS(mac->hw->soc->caps, MTK_RGMII) && |
| phy_interface_mode_is_rgmii(state->interface)) && |
| !(MTK_HAS_CAPS(mac->hw->soc->caps, MTK_TRGMII) && |
| !mac->id && state->interface == PHY_INTERFACE_MODE_TRGMII) && |
| !(MTK_HAS_CAPS(mac->hw->soc->caps, MTK_SGMII) && |
| (state->interface == PHY_INTERFACE_MODE_SGMII || |
| phy_interface_mode_is_8023z(state->interface))) && |
| !(MTK_HAS_CAPS(mac->hw->soc->caps, MTK_XGMII) && |
| (state->interface == PHY_INTERFACE_MODE_XGMII)) && |
| !(MTK_HAS_CAPS(mac->hw->soc->caps, MTK_USXGMII) && |
| (state->interface == PHY_INTERFACE_MODE_USXGMII)) && |
| !(MTK_HAS_CAPS(mac->hw->soc->caps, MTK_USXGMII) && |
| (state->interface == PHY_INTERFACE_MODE_10GKR))) { |
| linkmode_zero(supported); |
| return; |
| } |
| |
| phylink_set_port_modes(mask); |
| phylink_set(mask, Autoneg); |
| |
| switch (state->interface) { |
| case PHY_INTERFACE_MODE_USXGMII: |
| case PHY_INTERFACE_MODE_10GKR: |
| phylink_set(mask, 10000baseKR_Full); |
| phylink_set(mask, 10000baseT_Full); |
| phylink_set(mask, 10000baseCR_Full); |
| phylink_set(mask, 10000baseSR_Full); |
| phylink_set(mask, 10000baseLR_Full); |
| phylink_set(mask, 10000baseLRM_Full); |
| phylink_set(mask, 10000baseER_Full); |
| phylink_set(mask, 100baseT_Half); |
| phylink_set(mask, 100baseT_Full); |
| phylink_set(mask, 1000baseT_Half); |
| phylink_set(mask, 1000baseT_Full); |
| phylink_set(mask, 1000baseX_Full); |
| phylink_set(mask, 2500baseT_Full); |
| phylink_set(mask, 5000baseT_Full); |
| break; |
| case PHY_INTERFACE_MODE_TRGMII: |
| phylink_set(mask, 1000baseT_Full); |
| break; |
| case PHY_INTERFACE_MODE_XGMII: |
| /* fall through */ |
| case PHY_INTERFACE_MODE_1000BASEX: |
| phylink_set(mask, 1000baseX_Full); |
| /* fall through; */ |
| case PHY_INTERFACE_MODE_2500BASEX: |
| phylink_set(mask, 2500baseX_Full); |
| phylink_set(mask, 2500baseT_Full); |
| /* fall through; */ |
| case PHY_INTERFACE_MODE_GMII: |
| case PHY_INTERFACE_MODE_RGMII: |
| case PHY_INTERFACE_MODE_RGMII_ID: |
| case PHY_INTERFACE_MODE_RGMII_RXID: |
| case PHY_INTERFACE_MODE_RGMII_TXID: |
| phylink_set(mask, 1000baseT_Half); |
| /* fall through */ |
| case PHY_INTERFACE_MODE_SGMII: |
| phylink_set(mask, 1000baseT_Full); |
| phylink_set(mask, 1000baseX_Full); |
| /* fall through */ |
| case PHY_INTERFACE_MODE_MII: |
| case PHY_INTERFACE_MODE_RMII: |
| case PHY_INTERFACE_MODE_REVMII: |
| case PHY_INTERFACE_MODE_NA: |
| default: |
| phylink_set(mask, 10baseT_Half); |
| phylink_set(mask, 10baseT_Full); |
| phylink_set(mask, 100baseT_Half); |
| phylink_set(mask, 100baseT_Full); |
| break; |
| } |
| |
| if (state->interface == PHY_INTERFACE_MODE_NA) { |
| |
| if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_USXGMII)) { |
| phylink_set(mask, 10000baseKR_Full); |
| phylink_set(mask, 10000baseT_Full); |
| phylink_set(mask, 10000baseCR_Full); |
| phylink_set(mask, 10000baseSR_Full); |
| phylink_set(mask, 10000baseLR_Full); |
| phylink_set(mask, 10000baseLRM_Full); |
| phylink_set(mask, 10000baseER_Full); |
| phylink_set(mask, 1000baseKX_Full); |
| phylink_set(mask, 1000baseT_Full); |
| phylink_set(mask, 1000baseX_Full); |
| phylink_set(mask, 2500baseX_Full); |
| phylink_set(mask, 2500baseT_Full); |
| phylink_set(mask, 5000baseT_Full); |
| } |
| if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_SGMII)) { |
| phylink_set(mask, 1000baseT_Full); |
| phylink_set(mask, 1000baseX_Full); |
| phylink_set(mask, 2500baseX_Full); |
| } |
| if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_RGMII)) { |
| phylink_set(mask, 1000baseT_Full); |
| phylink_set(mask, 1000baseT_Half); |
| phylink_set(mask, 1000baseX_Full); |
| } |
| if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_GEPHY)) { |
| phylink_set(mask, 1000baseT_Full); |
| phylink_set(mask, 1000baseT_Half); |
| } |
| } |
| |
| if (mac->type == MTK_XGDM_TYPE) { |
| phylink_clear(mask, 10baseT_Half); |
| phylink_clear(mask, 100baseT_Half); |
| phylink_clear(mask, 1000baseT_Half); |
| } |
| |
| phylink_set(mask, Pause); |
| phylink_set(mask, Asym_Pause); |
| |
| linkmode_and(supported, supported, mask); |
| linkmode_and(state->advertising, state->advertising, mask); |
| |
| /* We can only operate at 2500BaseX or 1000BaseX. If requested |
| * to advertise both, only report advertising at 2500BaseX. |
| */ |
| phylink_helper_basex_speed(state); |
| } |
| |
| static const struct phylink_mac_ops mtk_phylink_ops = { |
| .validate = mtk_validate, |
| .mac_select_pcs = mtk_mac_select_pcs, |
| .mac_link_state = mtk_mac_pcs_get_state, |
| .mac_config = mtk_mac_config, |
| .mac_finish = mtk_mac_finish, |
| .mac_link_down = mtk_mac_link_down, |
| .mac_link_up = mtk_mac_link_up, |
| }; |
| |
| static int mtk_mdc_init(struct mtk_eth *eth) |
| { |
| struct device_node *mii_np; |
| int max_clk = 2500000, divider; |
| int ret = 0; |
| u32 val; |
| |
| mii_np = of_get_child_by_name(eth->dev->of_node, "mdio-bus"); |
| if (!mii_np) { |
| dev_err(eth->dev, "no %s child node found", "mdio-bus"); |
| return -ENODEV; |
| } |
| |
| if (!of_device_is_available(mii_np)) { |
| ret = -ENODEV; |
| goto err_put_node; |
| } |
| |
| if (!of_property_read_u32(mii_np, "clock-frequency", &val)) { |
| if (val > MDC_MAX_FREQ || |
| val < MDC_MAX_FREQ / MDC_MAX_DIVIDER) { |
| dev_err(eth->dev, "MDIO clock frequency out of range"); |
| ret = -EINVAL; |
| goto err_put_node; |
| } |
| max_clk = val; |
| } |
| |
| divider = min_t(unsigned int, DIV_ROUND_UP(MDC_MAX_FREQ, max_clk), 63); |
| |
| /* Configure MDC Turbo Mode */ |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V3)) { |
| val = mtk_r32(eth, MTK_MAC_MISC); |
| val |= MISC_MDC_TURBO; |
| mtk_w32(eth, val, MTK_MAC_MISC); |
| } else { |
| val = mtk_r32(eth, MTK_PPSC); |
| val |= PPSC_MDC_TURBO; |
| mtk_w32(eth, val, MTK_PPSC); |
| } |
| |
| /* Configure MDC Divider */ |
| val = mtk_r32(eth, MTK_PPSC); |
| val &= ~PPSC_MDC_CFG; |
| val |= FIELD_PREP(PPSC_MDC_CFG, divider); |
| mtk_w32(eth, val, MTK_PPSC); |
| |
| dev_info(eth->dev, "MDC is running on %d Hz\n", MDC_MAX_FREQ / divider); |
| |
| err_put_node: |
| of_node_put(mii_np); |
| return ret; |
| } |
| |
| static int mtk_mdio_init(struct mtk_eth *eth) |
| { |
| struct device_node *mii_np; |
| int ret; |
| |
| mii_np = of_get_child_by_name(eth->dev->of_node, "mdio-bus"); |
| if (!mii_np) { |
| dev_err(eth->dev, "no %s child node found", "mdio-bus"); |
| return -ENODEV; |
| } |
| |
| if (!of_device_is_available(mii_np)) { |
| ret = -ENODEV; |
| goto err_put_node; |
| } |
| |
| eth->mii_bus = devm_mdiobus_alloc(eth->dev); |
| if (!eth->mii_bus) { |
| ret = -ENOMEM; |
| goto err_put_node; |
| } |
| |
| eth->mii_bus->name = "mdio"; |
| eth->mii_bus->read = mtk_mdio_read; |
| eth->mii_bus->write = mtk_mdio_write; |
| eth->mii_bus->reset = mtk_mdio_reset; |
| eth->mii_bus->priv = eth; |
| eth->mii_bus->parent = eth->dev; |
| |
| if (snprintf(eth->mii_bus->id, MII_BUS_ID_SIZE, "%pOFn", mii_np) < 0) { |
| ret = -ENOMEM; |
| goto err_put_node; |
| } |
| |
| ret = of_mdiobus_register(eth->mii_bus, mii_np); |
| |
| err_put_node: |
| of_node_put(mii_np); |
| return ret; |
| } |
| |
| static void mtk_mdio_cleanup(struct mtk_eth *eth) |
| { |
| if (!eth->mii_bus) |
| return; |
| |
| mdiobus_unregister(eth->mii_bus); |
| } |
| |
| static inline void mtk_tx_irq_disable(struct mtk_eth *eth, u32 mask) |
| { |
| unsigned long flags; |
| u32 val; |
| |
| spin_lock_irqsave(ð->tx_irq_lock, flags); |
| val = mtk_r32(eth, eth->soc->reg_map->tx_irq_mask); |
| mtk_w32(eth, val & ~mask, eth->soc->reg_map->tx_irq_mask); |
| spin_unlock_irqrestore(ð->tx_irq_lock, flags); |
| } |
| |
| static inline void mtk_tx_irq_enable(struct mtk_eth *eth, u32 mask) |
| { |
| unsigned long flags; |
| u32 val; |
| |
| spin_lock_irqsave(ð->tx_irq_lock, flags); |
| val = mtk_r32(eth, eth->soc->reg_map->tx_irq_mask); |
| mtk_w32(eth, val | mask, eth->soc->reg_map->tx_irq_mask); |
| spin_unlock_irqrestore(ð->tx_irq_lock, flags); |
| } |
| |
| static inline void mtk_rx_irq_disable(struct mtk_eth *eth, u32 mask) |
| { |
| unsigned long flags; |
| u32 val; |
| |
| spin_lock_irqsave(ð->rx_irq_lock, flags); |
| val = mtk_r32(eth, eth->soc->reg_map->pdma.irq_mask); |
| mtk_w32(eth, val & ~mask, eth->soc->reg_map->pdma.irq_mask); |
| spin_unlock_irqrestore(ð->rx_irq_lock, flags); |
| } |
| |
| static inline void mtk_rx_irq_enable(struct mtk_eth *eth, u32 mask) |
| { |
| unsigned long flags; |
| u32 val; |
| |
| spin_lock_irqsave(ð->rx_irq_lock, flags); |
| val = mtk_r32(eth, eth->soc->reg_map->pdma.irq_mask); |
| mtk_w32(eth, val | mask, eth->soc->reg_map->pdma.irq_mask); |
| spin_unlock_irqrestore(ð->rx_irq_lock, flags); |
| } |
| |
| static int mtk_set_mac_address(struct net_device *dev, void *p) |
| { |
| int ret = eth_mac_addr(dev, p); |
| struct mtk_mac *mac = netdev_priv(dev); |
| struct mtk_eth *eth = mac->hw; |
| const char *macaddr = dev->dev_addr; |
| |
| if (ret) |
| return ret; |
| |
| if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) |
| return -EBUSY; |
| |
| spin_lock_bh(&mac->hw->page_lock); |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { |
| mtk_w32(mac->hw, (macaddr[0] << 8) | macaddr[1], |
| MT7628_SDM_MAC_ADRH); |
| mtk_w32(mac->hw, (macaddr[2] << 24) | (macaddr[3] << 16) | |
| (macaddr[4] << 8) | macaddr[5], |
| MT7628_SDM_MAC_ADRL); |
| } else { |
| mtk_w32(mac->hw, (macaddr[0] << 8) | macaddr[1], |
| MTK_GDMA_MAC_ADRH(mac->id)); |
| mtk_w32(mac->hw, (macaddr[2] << 24) | (macaddr[3] << 16) | |
| (macaddr[4] << 8) | macaddr[5], |
| MTK_GDMA_MAC_ADRL(mac->id)); |
| } |
| spin_unlock_bh(&mac->hw->page_lock); |
| |
| return 0; |
| } |
| |
| void mtk_stats_update_mac(struct mtk_mac *mac) |
| { |
| struct mtk_eth *eth = mac->hw; |
| const struct mtk_reg_map *reg_map = eth->soc->reg_map; |
| struct mtk_hw_stats *hw_stats = mac->hw_stats; |
| unsigned int offs = hw_stats->reg_offset; |
| u64 stats; |
| |
| u64_stats_update_begin(&hw_stats->syncp); |
| |
| hw_stats->rx_bytes += mtk_r32(mac->hw, reg_map->gdm1_cnt + offs); |
| stats = mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x4 + offs); |
| if (stats) |
| hw_stats->rx_bytes += (stats << 32); |
| hw_stats->rx_packets += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x08 + offs); |
| hw_stats->rx_overflow += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x10 + offs); |
| hw_stats->rx_fcs_errors += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x14 + offs); |
| hw_stats->rx_short_errors += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x18 + offs); |
| hw_stats->rx_long_errors += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x1c + offs); |
| hw_stats->rx_checksum_errors += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x20 + offs); |
| hw_stats->rx_flow_control_packets += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x24 + offs); |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V3)) { |
| hw_stats->tx_skip += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x50 + offs); |
| hw_stats->tx_collisions += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x54 + offs); |
| hw_stats->tx_bytes += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x40 + offs); |
| stats = mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x44 + offs); |
| if (stats) |
| hw_stats->tx_bytes += (stats << 32); |
| hw_stats->tx_packets += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x48 + offs); |
| } else { |
| hw_stats->tx_skip += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x28 + offs); |
| hw_stats->tx_collisions += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x2c + offs); |
| hw_stats->tx_bytes += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x30 + offs); |
| stats = mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x34 + offs); |
| if (stats) |
| hw_stats->tx_bytes += (stats << 32); |
| hw_stats->tx_packets += |
| mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x38 + offs); |
| } |
| |
| u64_stats_update_end(&hw_stats->syncp); |
| } |
| |
| static void mtk_stats_update(struct mtk_eth *eth) |
| { |
| int i; |
| |
| for (i = 0; i < MTK_MAC_COUNT; i++) { |
| if (!eth->mac[i] || !eth->mac[i]->hw_stats) |
| continue; |
| if (spin_trylock(ð->mac[i]->hw_stats->stats_lock)) { |
| mtk_stats_update_mac(eth->mac[i]); |
| spin_unlock(ð->mac[i]->hw_stats->stats_lock); |
| } |
| } |
| } |
| |
| static void mtk_get_stats64(struct net_device *dev, |
| struct rtnl_link_stats64 *storage) |
| { |
| struct mtk_mac *mac = netdev_priv(dev); |
| struct mtk_hw_stats *hw_stats = mac->hw_stats; |
| unsigned int start; |
| |
| if (netif_running(dev) && netif_device_present(dev)) { |
| if (spin_trylock_bh(&hw_stats->stats_lock)) { |
| mtk_stats_update_mac(mac); |
| spin_unlock_bh(&hw_stats->stats_lock); |
| } |
| } |
| |
| do { |
| start = u64_stats_fetch_begin_irq(&hw_stats->syncp); |
| storage->rx_packets = hw_stats->rx_packets; |
| storage->tx_packets = hw_stats->tx_packets; |
| storage->rx_bytes = hw_stats->rx_bytes; |
| storage->tx_bytes = hw_stats->tx_bytes; |
| storage->collisions = hw_stats->tx_collisions; |
| storage->rx_length_errors = hw_stats->rx_short_errors + |
| hw_stats->rx_long_errors; |
| storage->rx_over_errors = hw_stats->rx_overflow; |
| storage->rx_crc_errors = hw_stats->rx_fcs_errors; |
| storage->rx_errors = hw_stats->rx_checksum_errors; |
| storage->tx_aborted_errors = hw_stats->tx_skip; |
| } while (u64_stats_fetch_retry_irq(&hw_stats->syncp, start)); |
| |
| storage->tx_errors = dev->stats.tx_errors; |
| storage->rx_dropped = dev->stats.rx_dropped; |
| storage->tx_dropped = dev->stats.tx_dropped; |
| } |
| |
| static inline int mtk_max_frag_size(int mtu) |
| { |
| /* make sure buf_size will be at least MTK_MAX_RX_LENGTH */ |
| if (mtu + MTK_RX_ETH_HLEN < MTK_MAX_RX_LENGTH) |
| mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; |
| |
| return SKB_DATA_ALIGN(MTK_RX_HLEN + mtu) + |
| SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); |
| } |
| |
| static inline int mtk_max_buf_size(int frag_size) |
| { |
| int buf_size = frag_size - NET_SKB_PAD - NET_IP_ALIGN - |
| SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); |
| |
| WARN_ON(buf_size < MTK_MAX_RX_LENGTH); |
| |
| return buf_size; |
| } |
| |
| static bool mtk_rx_get_desc(struct mtk_eth *eth, struct mtk_rx_dma_v2 *rxd, |
| struct mtk_rx_dma_v2 *dma_rxd) |
| { |
| rxd->rxd2 = READ_ONCE(dma_rxd->rxd2); |
| if (!(rxd->rxd2 & RX_DMA_DONE)) |
| return false; |
| |
| rxd->rxd1 = READ_ONCE(dma_rxd->rxd1); |
| rxd->rxd3 = READ_ONCE(dma_rxd->rxd3); |
| rxd->rxd4 = READ_ONCE(dma_rxd->rxd4); |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_RX_V2)) { |
| rxd->rxd5 = READ_ONCE(dma_rxd->rxd5); |
| rxd->rxd6 = READ_ONCE(dma_rxd->rxd6); |
| rxd->rxd7 = READ_ONCE(dma_rxd->rxd7); |
| } |
| |
| return true; |
| } |
| |
| /* the qdma core needs scratch memory to be setup */ |
| static int mtk_init_fq_dma(struct mtk_eth *eth) |
| { |
| const struct mtk_soc_data *soc = eth->soc; |
| dma_addr_t phy_ring_tail; |
| int cnt = MTK_DMA_SIZE; |
| dma_addr_t dma_addr; |
| int i; |
| |
| if (!eth->soc->has_sram) { |
| eth->scratch_ring = dma_alloc_coherent(eth->dma_dev, |
| cnt * soc->txrx.txd_size, |
| ð->phy_scratch_ring, |
| GFP_KERNEL); |
| } else { |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V3)) |
| eth->scratch_ring = eth->sram_base; |
| else if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) |
| eth->scratch_ring = eth->base + MTK_ETH_SRAM_OFFSET; |
| } |
| |
| if (unlikely(!eth->scratch_ring)) |
| return -ENOMEM; |
| |
| eth->scratch_head = kcalloc(cnt, MTK_QDMA_PAGE_SIZE, GFP_KERNEL); |
| if (unlikely(!eth->scratch_head)) |
| return -ENOMEM; |
| |
| dma_addr = dma_map_single(eth->dma_dev, |
| eth->scratch_head, cnt * MTK_QDMA_PAGE_SIZE, |
| DMA_FROM_DEVICE); |
| if (unlikely(dma_mapping_error(eth->dma_dev, dma_addr))) |
| return -ENOMEM; |
| |
| phy_ring_tail = eth->phy_scratch_ring + |
| (dma_addr_t)soc->txrx.txd_size * (cnt - 1); |
| |
| for (i = 0; i < cnt; i++) { |
| struct mtk_tx_dma_v2 *txd; |
| |
| txd = eth->scratch_ring + i * soc->txrx.txd_size; |
| txd->txd1 = dma_addr + i * MTK_QDMA_PAGE_SIZE; |
| if (i < cnt - 1) |
| txd->txd2 = eth->phy_scratch_ring + |
| (i + 1) * soc->txrx.txd_size; |
| |
| txd->txd3 = TX_DMA_PLEN0(MTK_QDMA_PAGE_SIZE); |
| txd->txd4 = 0; |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2) || |
| MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V3)) { |
| txd->txd5 = 0; |
| txd->txd6 = 0; |
| txd->txd7 = 0; |
| txd->txd8 = 0; |
| } |
| } |
| |
| mtk_w32(eth, eth->phy_scratch_ring, soc->reg_map->qdma.fq_head); |
| mtk_w32(eth, phy_ring_tail, soc->reg_map->qdma.fq_tail); |
| mtk_w32(eth, (cnt << 16) | cnt, soc->reg_map->qdma.fq_count); |
| mtk_w32(eth, MTK_QDMA_PAGE_SIZE << 16, soc->reg_map->qdma.fq_blen); |
| |
| return 0; |
| } |
| |
| static inline void *mtk_qdma_phys_to_virt(struct mtk_tx_ring *ring, u32 desc) |
| { |
| return ring->dma + (desc - ring->phys); |
| } |
| |
| static inline struct mtk_tx_buf *mtk_desc_to_tx_buf(struct mtk_tx_ring *ring, |
| void *txd, u32 txd_size) |
| { |
| int idx = (txd - ring->dma) / txd_size; |
| |
| return &ring->buf[idx]; |
| } |
| |
| static struct mtk_tx_dma *qdma_to_pdma(struct mtk_tx_ring *ring, |
| void *dma) |
| { |
| return ring->dma_pdma - ring->dma + dma; |
| } |
| |
| static int txd_to_idx(struct mtk_tx_ring *ring, void *dma, u32 txd_size) |
| { |
| return (dma - ring->dma) / txd_size; |
| } |
| |
| static void mtk_tx_unmap(struct mtk_eth *eth, struct mtk_tx_buf *tx_buf, |
| bool napi) |
| { |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { |
| if (tx_buf->flags & MTK_TX_FLAGS_SINGLE0) { |
| dma_unmap_single(eth->dma_dev, |
| dma_unmap_addr(tx_buf, dma_addr0), |
| dma_unmap_len(tx_buf, dma_len0), |
| DMA_TO_DEVICE); |
| } else if (tx_buf->flags & MTK_TX_FLAGS_PAGE0) { |
| dma_unmap_page(eth->dma_dev, |
| dma_unmap_addr(tx_buf, dma_addr0), |
| dma_unmap_len(tx_buf, dma_len0), |
| DMA_TO_DEVICE); |
| } |
| } else { |
| if (dma_unmap_len(tx_buf, dma_len0)) { |
| dma_unmap_page(eth->dma_dev, |
| dma_unmap_addr(tx_buf, dma_addr0), |
| dma_unmap_len(tx_buf, dma_len0), |
| DMA_TO_DEVICE); |
| } |
| |
| if (dma_unmap_len(tx_buf, dma_len1)) { |
| dma_unmap_page(eth->dma_dev, |
| dma_unmap_addr(tx_buf, dma_addr1), |
| dma_unmap_len(tx_buf, dma_len1), |
| DMA_TO_DEVICE); |
| } |
| } |
| |
| tx_buf->flags = 0; |
| if (tx_buf->skb && |
| (tx_buf->skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC)) { |
| if (napi) |
| napi_consume_skb(tx_buf->skb, napi); |
| else |
| dev_kfree_skb_any(tx_buf->skb); |
| } |
| tx_buf->skb = NULL; |
| } |
| |
| static void setup_tx_buf(struct mtk_eth *eth, struct mtk_tx_buf *tx_buf, |
| struct mtk_tx_dma *txd, dma_addr_t mapped_addr, |
| size_t size, int idx) |
| { |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { |
| dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr); |
| dma_unmap_len_set(tx_buf, dma_len0, size); |
| } else { |
| if (idx & 1) { |
| txd->txd3 = mapped_addr; |
| txd->txd2 |= TX_DMA_PLEN1(size); |
| dma_unmap_addr_set(tx_buf, dma_addr1, mapped_addr); |
| dma_unmap_len_set(tx_buf, dma_len1, size); |
| } else { |
| tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC; |
| txd->txd1 = mapped_addr; |
| txd->txd2 = TX_DMA_PLEN0(size); |
| dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr); |
| dma_unmap_len_set(tx_buf, dma_len0, size); |
| } |
| } |
| } |
| |
| static void mtk_tx_set_dma_desc_v1(struct sk_buff *skb, struct net_device *dev, void *txd, |
| struct mtk_tx_dma_desc_info *info) |
| { |
| struct mtk_mac *mac = netdev_priv(dev); |
| struct mtk_eth *eth = mac->hw; |
| struct mtk_tx_dma *desc = txd; |
| u32 data; |
| |
| WRITE_ONCE(desc->txd1, info->addr); |
| |
| data = TX_DMA_SWC | QID_LOW_BITS(info->qid) | TX_DMA_PLEN0(info->size); |
| if (info->last) |
| data |= TX_DMA_LS0; |
| WRITE_ONCE(desc->txd3, data); |
| |
| data = (mac->id + 1) << TX_DMA_FPORT_SHIFT; /* forward port */ |
| data |= QID_HIGH_BITS(info->qid); |
| if (info->first) { |
| if (info->gso) |
| data |= TX_DMA_TSO; |
| /* tx checksum offload */ |
| if (info->csum) |
| data |= TX_DMA_CHKSUM; |
| /* vlan header offload */ |
| if (info->vlan) |
| data |= TX_DMA_INS_VLAN | info->vlan_tci; |
| } |
| |
| #if defined(CONFIG_NET_MEDIATEK_HNAT) || defined(CONFIG_NET_MEDIATEK_HNAT_MODULE) |
| if (HNAT_SKB_CB2(skb)->magic == 0x78681415) { |
| data &= ~(0x7 << TX_DMA_FPORT_SHIFT); |
| data |= 0x4 << TX_DMA_FPORT_SHIFT; |
| } |
| |
| trace_printk("[%s] skb_shinfo(skb)->nr_frags=%x HNAT_SKB_CB2(skb)->magic=%x txd4=%x<-----\n", |
| __func__, skb_shinfo(skb)->nr_frags, HNAT_SKB_CB2(skb)->magic, data); |
| #endif |
| WRITE_ONCE(desc->txd4, data); |
| } |
| |
| static void mtk_tx_set_dma_desc_v2(struct sk_buff *skb, struct net_device *dev, void *txd, |
| struct mtk_tx_dma_desc_info *info) |
| { |
| struct mtk_mac *mac = netdev_priv(dev); |
| struct mtk_eth *eth = mac->hw; |
| struct mtk_tx_dma_v2 *desc = txd; |
| u32 data = 0; |
| |
| if (!info->qid && mac->id) |
| info->qid = MTK_QDMA_GMAC2_QID; |
| |
| WRITE_ONCE(desc->txd1, info->addr); |
| |
| data = TX_DMA_PLEN0(info->size); |
| if (info->last) |
| data |= TX_DMA_LS0; |
| WRITE_ONCE(desc->txd3, data); |
| |
| data = ((mac->id == MTK_GMAC3_ID) ? |
| PSE_GDM3_PORT : (mac->id + 1)) << TX_DMA_FPORT_SHIFT_V2; /* forward port */ |
| data |= TX_DMA_SWC_V2 | QID_BITS_V2(info->qid); |
| #if defined(CONFIG_NET_MEDIATEK_HNAT) || defined(CONFIG_NET_MEDIATEK_HNAT_MODULE) |
| if (HNAT_SKB_CB2(skb)->magic == 0x78681415) { |
| data &= ~(0xf << TX_DMA_FPORT_SHIFT_V2); |
| data |= 0x4 << TX_DMA_FPORT_SHIFT_V2; |
| } |
| |
| trace_printk("[%s] skb_shinfo(skb)->nr_frags=%x HNAT_SKB_CB2(skb)->magic=%x txd4=%x<-----\n", |
| __func__, skb_shinfo(skb)->nr_frags, HNAT_SKB_CB2(skb)->magic, data); |
| #endif |
| WRITE_ONCE(desc->txd4, data); |
| |
| data = 0; |
| if (info->first) { |
| if (info->gso) |
| data |= TX_DMA_TSO_V2; |
| /* tx checksum offload */ |
| if (info->csum) |
| data |= TX_DMA_CHKSUM_V2; |
| } |
| WRITE_ONCE(desc->txd5, data); |
| |
| data = 0; |
| if (info->first && info->vlan) |
| data |= TX_DMA_INS_VLAN_V2 | info->vlan_tci; |
| WRITE_ONCE(desc->txd6, data); |
| |
| WRITE_ONCE(desc->txd7, 0); |
| WRITE_ONCE(desc->txd8, 0); |
| } |
| |
| static void mtk_tx_set_dma_desc_v3(struct sk_buff *skb, struct net_device *dev, void *txd, |
| struct mtk_tx_dma_desc_info *info) |
| { |
| struct mtk_mac *mac = netdev_priv(dev); |
| struct mtk_eth *eth = mac->hw; |
| struct mtk_tx_dma_v2 *desc = txd; |
| u64 addr64 = 0; |
| u32 data = 0; |
| |
| if (!info->qid && mac->id) |
| info->qid = MTK_QDMA_GMAC2_QID; |
| |
| addr64 = (MTK_HAS_CAPS(eth->soc->caps, MTK_8GB_ADDRESSING)) ? |
| TX_DMA_SDP1(info->addr) : 0; |
| |
| WRITE_ONCE(desc->txd1, info->addr); |
| |
| data = TX_DMA_PLEN0(info->size); |
| if (info->last) |
| data |= TX_DMA_LS0; |
| WRITE_ONCE(desc->txd3, data | addr64); |
| |
| data = ((mac->id == MTK_GMAC3_ID) ? |
| PSE_GDM3_PORT : (mac->id + 1)) << TX_DMA_FPORT_SHIFT_V2; /* forward port */ |
| data |= TX_DMA_SWC_V2 | QID_BITS_V2(info->qid); |
| #if defined(CONFIG_NET_MEDIATEK_HNAT) || defined(CONFIG_NET_MEDIATEK_HNAT_MODULE) |
| if (HNAT_SKB_CB2(skb)->magic == 0x78681415) { |
| data &= ~(0xf << TX_DMA_FPORT_SHIFT_V2); |
| data |= 0x4 << TX_DMA_FPORT_SHIFT_V2; |
| } |
| |
| trace_printk("[%s] skb_shinfo(skb)->nr_frags=%x HNAT_SKB_CB2(skb)->magic=%x txd4=%x<-----\n", |
| __func__, skb_shinfo(skb)->nr_frags, HNAT_SKB_CB2(skb)->magic, data); |
| #endif |
| WRITE_ONCE(desc->txd4, data); |
| |
| data = 0; |
| if (info->first) { |
| if (info->gso) |
| data |= TX_DMA_TSO_V2; |
| /* tx checksum offload */ |
| if (info->csum) |
| data |= TX_DMA_CHKSUM_V2; |
| |
| if (netdev_uses_dsa(dev)) |
| data |= TX_DMA_SPTAG_V3; |
| } |
| WRITE_ONCE(desc->txd5, data); |
| |
| data = 0; |
| if (info->first && info->vlan) |
| data |= TX_DMA_INS_VLAN_V2 | info->vlan_tci; |
| WRITE_ONCE(desc->txd6, data); |
| |
| WRITE_ONCE(desc->txd7, 0); |
| WRITE_ONCE(desc->txd8, 0); |
| } |
| |
| static void mtk_tx_set_dma_desc(struct sk_buff *skb, struct net_device *dev, void *txd, |
| struct mtk_tx_dma_desc_info *info) |
| { |
| struct mtk_mac *mac = netdev_priv(dev); |
| struct mtk_eth *eth = mac->hw; |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V3)) |
| mtk_tx_set_dma_desc_v3(skb, dev, txd, info); |
| else if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) |
| mtk_tx_set_dma_desc_v2(skb, dev, txd, info); |
| else |
| mtk_tx_set_dma_desc_v1(skb, dev, txd, info); |
| } |
| |
| static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev, |
| int tx_num, struct mtk_tx_ring *ring, bool gso) |
| { |
| struct mtk_tx_dma_desc_info txd_info = { |
| .size = skb_headlen(skb), |
| .qid = skb->mark & MTK_QDMA_TX_MASK, |
| .gso = gso, |
| .csum = skb->ip_summed == CHECKSUM_PARTIAL, |
| .vlan = skb_vlan_tag_present(skb), |
| .vlan_tci = skb_vlan_tag_get(skb), |
| .first = true, |
| .last = !skb_is_nonlinear(skb), |
| }; |
| struct mtk_mac *mac = netdev_priv(dev); |
| struct mtk_eth *eth = mac->hw; |
| const struct mtk_soc_data *soc = eth->soc; |
| struct mtk_tx_dma *itxd, *txd; |
| struct mtk_tx_dma *itxd_pdma, *txd_pdma; |
| struct mtk_tx_buf *itx_buf, *tx_buf; |
| int i, n_desc = 1; |
| int k = 0; |
| |
| if (skb->len < 32) { |
| if (skb_put_padto(skb, MTK_MIN_TX_LENGTH)) |
| return -ENOMEM; |
| |
| txd_info.size = skb_headlen(skb); |
| } |
| |
| itxd = ring->next_free; |
| itxd_pdma = qdma_to_pdma(ring, itxd); |
| if (itxd == ring->last_free) |
| return -ENOMEM; |
| |
| itx_buf = mtk_desc_to_tx_buf(ring, itxd, soc->txrx.txd_size); |
| memset(itx_buf, 0, sizeof(*itx_buf)); |
| |
| txd_info.addr = dma_map_single(eth->dma_dev, skb->data, txd_info.size, |
| DMA_TO_DEVICE); |
| if (unlikely(dma_mapping_error(eth->dma_dev, txd_info.addr))) |
| return -ENOMEM; |
| |
| mtk_tx_set_dma_desc(skb, dev, itxd, &txd_info); |
| |
| itx_buf->flags |= MTK_TX_FLAGS_SINGLE0; |
| itx_buf->flags |= (mac->id == MTK_GMAC1_ID) ? MTK_TX_FLAGS_FPORT0 : |
| (mac->id == MTK_GMAC2_ID) ? MTK_TX_FLAGS_FPORT1 : |
| MTK_TX_FLAGS_FPORT2; |
| setup_tx_buf(eth, itx_buf, itxd_pdma, txd_info.addr, txd_info.size, |
| k++); |
| |
| /* TX SG offload */ |
| txd = itxd; |
| txd_pdma = qdma_to_pdma(ring, txd); |
| |
| for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
| skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
| unsigned int offset = 0; |
| int frag_size = skb_frag_size(frag); |
| |
| while (frag_size) { |
| bool new_desc = true; |
| |
| if (MTK_HAS_CAPS(soc->caps, MTK_QDMA) || |
| (i & 0x1)) { |
| txd = mtk_qdma_phys_to_virt(ring, txd->txd2); |
| txd_pdma = qdma_to_pdma(ring, txd); |
| if (txd == ring->last_free) |
| goto err_dma; |
| |
| n_desc++; |
| } else { |
| new_desc = false; |
| } |
| |
| memset(&txd_info, 0, sizeof(struct mtk_tx_dma_desc_info)); |
| txd_info.size = min(frag_size, MTK_TX_DMA_BUF_LEN); |
| txd_info.qid = skb->mark & MTK_QDMA_TX_MASK; |
| txd_info.last = i == skb_shinfo(skb)->nr_frags - 1 && |
| !(frag_size - txd_info.size); |
| txd_info.addr = skb_frag_dma_map(eth->dma_dev, frag, |
| offset, txd_info.size, |
| DMA_TO_DEVICE); |
| if (unlikely(dma_mapping_error(eth->dma_dev, |
| txd_info.addr))) |
| goto err_dma; |
| |
| mtk_tx_set_dma_desc(skb, dev, txd, &txd_info); |
| |
| tx_buf = mtk_desc_to_tx_buf(ring, txd, soc->txrx.txd_size); |
| if (new_desc) |
| memset(tx_buf, 0, sizeof(*tx_buf)); |
| tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC; |
| tx_buf->flags |= MTK_TX_FLAGS_PAGE0; |
| tx_buf->flags |= |
| (mac->id == MTK_GMAC1_ID) ? MTK_TX_FLAGS_FPORT0 : |
| (mac->id == MTK_GMAC2_ID) ? MTK_TX_FLAGS_FPORT1 : |
| MTK_TX_FLAGS_FPORT2; |
| |
| setup_tx_buf(eth, tx_buf, txd_pdma, txd_info.addr, |
| txd_info.size, k++); |
| |
| frag_size -= txd_info.size; |
| offset += txd_info.size; |
| } |
| } |
| |
| /* store skb to cleanup */ |
| itx_buf->skb = skb; |
| |
| if (!MTK_HAS_CAPS(soc->caps, MTK_QDMA)) { |
| if (k & 0x1) |
| txd_pdma->txd2 |= TX_DMA_LS0; |
| else |
| txd_pdma->txd2 |= TX_DMA_LS1; |
| } |
| |
| netdev_sent_queue(dev, skb->len); |
| skb_tx_timestamp(skb); |
| |
| ring->next_free = mtk_qdma_phys_to_virt(ring, txd->txd2); |
| atomic_sub(n_desc, &ring->free_count); |
| |
| /* make sure that all changes to the dma ring are flushed before we |
| * continue |
| */ |
| wmb(); |
| |
| if (MTK_HAS_CAPS(soc->caps, MTK_QDMA)) { |
| if (netif_xmit_stopped(netdev_get_tx_queue(dev, 0)) || |
| !netdev_xmit_more()) |
| mtk_w32(eth, txd->txd2, soc->reg_map->qdma.ctx_ptr); |
| } else { |
| int next_idx = NEXT_DESP_IDX(txd_to_idx(ring, txd, soc->txrx.txd_size), |
| ring->dma_size); |
| mtk_w32(eth, next_idx, MT7628_TX_CTX_IDX0); |
| } |
| |
| return 0; |
| |
| err_dma: |
| do { |
| tx_buf = mtk_desc_to_tx_buf(ring, itxd, soc->txrx.txd_size); |
| |
| /* unmap dma */ |
| mtk_tx_unmap(eth, tx_buf, false); |
| |
| itxd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU; |
| if (!MTK_HAS_CAPS(soc->caps, MTK_QDMA)) |
| itxd_pdma->txd2 = TX_DMA_DESP2_DEF; |
| |
| itxd = mtk_qdma_phys_to_virt(ring, itxd->txd2); |
| itxd_pdma = qdma_to_pdma(ring, itxd); |
| } while (itxd != txd); |
| |
| return -ENOMEM; |
| } |
| |
| static inline int mtk_cal_txd_req(struct sk_buff *skb) |
| { |
| int i, nfrags; |
| skb_frag_t *frag; |
| |
| nfrags = 1; |
| if (skb_is_gso(skb)) { |
| for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
| frag = &skb_shinfo(skb)->frags[i]; |
| nfrags += DIV_ROUND_UP(skb_frag_size(frag), |
| MTK_TX_DMA_BUF_LEN); |
| } |
| } else { |
| nfrags += skb_shinfo(skb)->nr_frags; |
| } |
| |
| return nfrags; |
| } |
| |
| static int mtk_queue_stopped(struct mtk_eth *eth) |
| { |
| int i; |
| |
| for (i = 0; i < MTK_MAC_COUNT; i++) { |
| if (!eth->netdev[i]) |
| continue; |
| if (netif_queue_stopped(eth->netdev[i])) |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static void mtk_wake_queue(struct mtk_eth *eth) |
| { |
| int i; |
| |
| for (i = 0; i < MTK_MAC_COUNT; i++) { |
| if (!eth->netdev[i]) |
| continue; |
| netif_wake_queue(eth->netdev[i]); |
| } |
| } |
| |
| static int mtk_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| { |
| struct mtk_mac *mac = netdev_priv(dev); |
| struct mtk_eth *eth = mac->hw; |
| struct mtk_tx_ring *ring = ð->tx_ring; |
| struct net_device_stats *stats = &dev->stats; |
| bool gso = false; |
| int tx_num; |
| |
| /* normally we can rely on the stack not calling this more than once, |
| * however we have 2 queues running on the same ring so we need to lock |
| * the ring access |
| */ |
| spin_lock(ð->page_lock); |
| |
| if (unlikely(test_bit(MTK_RESETTING, ð->state))) |
| goto drop; |
| |
| tx_num = mtk_cal_txd_req(skb); |
| if (unlikely(atomic_read(&ring->free_count) <= tx_num)) { |
| netif_stop_queue(dev); |
| netif_err(eth, tx_queued, dev, |
| "Tx Ring full when queue awake!\n"); |
| spin_unlock(ð->page_lock); |
| return NETDEV_TX_BUSY; |
| } |
| |
| /* TSO: fill MSS info in tcp checksum field */ |
| if (skb_is_gso(skb)) { |
| if (skb_cow_head(skb, 0)) { |
| netif_warn(eth, tx_err, dev, |
| "GSO expand head fail.\n"); |
| goto drop; |
| } |
| |
| if (skb_shinfo(skb)->gso_type & |
| (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) { |
| gso = true; |
| tcp_hdr(skb)->check = htons(skb_shinfo(skb)->gso_size); |
| } |
| } |
| |
| if (mtk_tx_map(skb, dev, tx_num, ring, gso) < 0) |
| goto drop; |
| |
| if (unlikely(atomic_read(&ring->free_count) <= ring->thresh)) |
| netif_stop_queue(dev); |
| |
| spin_unlock(ð->page_lock); |
| |
| return NETDEV_TX_OK; |
| |
| drop: |
| spin_unlock(ð->page_lock); |
| stats->tx_dropped++; |
| dev_kfree_skb_any(skb); |
| return NETDEV_TX_OK; |
| } |
| |
| static struct mtk_rx_ring *mtk_get_rx_ring(struct mtk_eth *eth) |
| { |
| int i; |
| struct mtk_rx_ring *ring; |
| int idx; |
| |
| for (i = 0; i < MTK_MAX_RX_RING_NUM; i++) { |
| struct mtk_rx_dma *rxd; |
| |
| if (!IS_NORMAL_RING(i) && !IS_HW_LRO_RING(i)) |
| continue; |
| |
| ring = ð->rx_ring[i]; |
| idx = NEXT_DESP_IDX(ring->calc_idx, ring->dma_size); |
| rxd = ring->dma + idx * eth->soc->txrx.rxd_size; |
| if (rxd->rxd2 & RX_DMA_DONE) { |
| ring->calc_idx_update = true; |
| return ring; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| static void mtk_update_rx_cpu_idx(struct mtk_eth *eth, struct mtk_rx_ring *ring) |
| { |
| int i; |
| |
| if (!eth->hwlro) |
| mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg); |
| else { |
| for (i = 0; i < MTK_MAX_RX_RING_NUM; i++) { |
| ring = ð->rx_ring[i]; |
| if (ring->calc_idx_update) { |
| ring->calc_idx_update = false; |
| mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg); |
| } |
| } |
| } |
| } |
| |
| static int mtk_poll_rx(struct napi_struct *napi, int budget, |
| struct mtk_eth *eth) |
| { |
| struct mtk_napi *rx_napi = container_of(napi, struct mtk_napi, napi); |
| struct mtk_rx_ring *ring = rx_napi->rx_ring; |
| int idx; |
| struct sk_buff *skb; |
| u64 addr64 = 0; |
| u8 *data, *new_data; |
| struct mtk_rx_dma_v2 *rxd, trxd; |
| int done = 0; |
| |
| if (unlikely(!ring)) |
| goto rx_done; |
| |
| while (done < budget) { |
| unsigned int pktlen, *rxdcsum; |
| struct net_device *netdev = NULL; |
| dma_addr_t dma_addr = 0; |
| int mac = 0; |
| |
| if (eth->hwlro) |
| ring = mtk_get_rx_ring(eth); |
| |
| if (unlikely(!ring)) |
| goto rx_done; |
| |
| idx = NEXT_DESP_IDX(ring->calc_idx, ring->dma_size); |
| rxd = ring->dma + idx * eth->soc->txrx.rxd_size; |
| data = ring->data[idx]; |
| |
| if (!mtk_rx_get_desc(eth, &trxd, rxd)) |
| break; |
| |
| /* find out which mac the packet come from. values start at 1 */ |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { |
| mac = 0; |
| } else { |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_RX_V2)) { |
| switch (RX_DMA_GET_SPORT_V2(trxd.rxd5)) { |
| case PSE_GDM1_PORT: |
| case PSE_GDM2_PORT: |
| mac = RX_DMA_GET_SPORT_V2(trxd.rxd5) - 1; |
| break; |
| case PSE_GDM3_PORT: |
| mac = MTK_GMAC3_ID; |
| break; |
| } |
| } else |
| mac = (trxd.rxd4 & RX_DMA_SPECIAL_TAG) ? |
| 0 : RX_DMA_GET_SPORT(trxd.rxd4) - 1; |
| } |
| |
| if (unlikely(mac < 0 || mac >= MTK_MAC_COUNT || |
| !eth->netdev[mac])) |
| goto release_desc; |
| |
| netdev = eth->netdev[mac]; |
| |
| if (unlikely(test_bit(MTK_RESETTING, ð->state))) |
| goto release_desc; |
| |
| /* alloc new buffer */ |
| new_data = napi_alloc_frag(ring->frag_size); |
| if (unlikely(!new_data)) { |
| netdev->stats.rx_dropped++; |
| goto release_desc; |
| } |
| dma_addr = dma_map_single(eth->dma_dev, |
| new_data + NET_SKB_PAD + |
| eth->ip_align, |
| ring->buf_size, |
| DMA_FROM_DEVICE); |
| if (unlikely(dma_mapping_error(eth->dma_dev, dma_addr))) { |
| skb_free_frag(new_data); |
| netdev->stats.rx_dropped++; |
| goto release_desc; |
| } |
| |
| addr64 = (MTK_HAS_CAPS(eth->soc->caps, MTK_8GB_ADDRESSING)) ? |
| ((u64)(trxd.rxd2 & 0xf)) << 32 : 0; |
| |
| dma_unmap_single(eth->dma_dev, |
| (u64)(trxd.rxd1 | addr64), |
| ring->buf_size, DMA_FROM_DEVICE); |
| |
| /* receive data */ |
| skb = build_skb(data, ring->frag_size); |
| if (unlikely(!skb)) { |
| skb_free_frag(data); |
| netdev->stats.rx_dropped++; |
| goto skip_rx; |
| } |
| skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN); |
| |
| pktlen = RX_DMA_GET_PLEN0(trxd.rxd2); |
| skb->dev = netdev; |
| skb_put(skb, pktlen); |
| |
| if ((MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_RX_V2))) |
| rxdcsum = &trxd.rxd3; |
| else |
| rxdcsum = &trxd.rxd4; |
| |
| if (*rxdcsum & eth->soc->txrx.rx_dma_l4_valid) |
| skb->ip_summed = CHECKSUM_UNNECESSARY; |
| else |
| skb_checksum_none_assert(skb); |
| skb->protocol = eth_type_trans(skb, netdev); |
| |
| if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) { |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_RX_V2)) { |
| if (trxd.rxd3 & RX_DMA_VTAG_V2) |
| __vlan_hwaccel_put_tag(skb, |
| htons(RX_DMA_VPID_V2(trxd.rxd4)), |
| RX_DMA_VID_V2(trxd.rxd4)); |
| } else { |
| if (trxd.rxd2 & RX_DMA_VTAG) |
| __vlan_hwaccel_put_tag(skb, |
| htons(RX_DMA_VPID(trxd.rxd3)), |
| RX_DMA_VID(trxd.rxd3)); |
| } |
| |
| /* If netdev is attached to dsa switch, the special |
| * tag inserted in VLAN field by switch hardware can |
| * be offload by RX HW VLAN offload. Clears the VLAN |
| * information from @skb to avoid unexpected 8021d |
| * handler before packet enter dsa framework. |
| */ |
| if (netdev_uses_dsa(netdev)) |
| __vlan_hwaccel_clear_tag(skb); |
| } |
| |
| #if defined(CONFIG_NET_MEDIATEK_HNAT) || defined(CONFIG_NET_MEDIATEK_HNAT_MODULE) |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_RX_V2)) |
| *(u32 *)(skb->head) = trxd.rxd5; |
| else |
| *(u32 *)(skb->head) = trxd.rxd4; |
| |
| skb_hnat_alg(skb) = 0; |
| skb_hnat_filled(skb) = 0; |
| skb_hnat_magic_tag(skb) = HNAT_MAGIC_TAG; |
| |
| if (skb_hnat_reason(skb) == HIT_BIND_FORCE_TO_CPU) { |
| trace_printk("[%s] reason=0x%x(force to CPU) from WAN to Ext\n", |
| __func__, skb_hnat_reason(skb)); |
| skb->pkt_type = PACKET_HOST; |
| } |
| |
| trace_printk("[%s] rxd:(entry=%x,sport=%x,reason=%x,alg=%x\n", |
| __func__, skb_hnat_entry(skb), skb_hnat_sport(skb), |
| skb_hnat_reason(skb), skb_hnat_alg(skb)); |
| #endif |
| if (mtk_hwlro_stats_ebl && |
| IS_HW_LRO_RING(ring->ring_no) && eth->hwlro) { |
| hw_lro_stats_update(ring->ring_no, &trxd); |
| hw_lro_flush_stats_update(ring->ring_no, &trxd); |
| } |
| |
| skb_record_rx_queue(skb, 0); |
| napi_gro_receive(napi, skb); |
| |
| skip_rx: |
| ring->data[idx] = new_data; |
| rxd->rxd1 = (unsigned int)dma_addr; |
| |
| release_desc: |
| addr64 = (MTK_HAS_CAPS(eth->soc->caps, MTK_8GB_ADDRESSING)) ? |
| RX_DMA_SDP1(dma_addr) : 0; |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) |
| rxd->rxd2 = RX_DMA_LSO; |
| else |
| rxd->rxd2 = RX_DMA_PLEN0(ring->buf_size) | addr64; |
| |
| ring->calc_idx = idx; |
| |
| done++; |
| } |
| |
| rx_done: |
| if (done) { |
| /* make sure that all changes to the dma ring are flushed before |
| * we continue |
| */ |
| wmb(); |
| mtk_update_rx_cpu_idx(eth, ring); |
| } |
| |
| return done; |
| } |
| |
| static void mtk_poll_tx_qdma(struct mtk_eth *eth, int budget, |
| unsigned int *done, unsigned int *bytes) |
| { |
| const struct mtk_reg_map *reg_map = eth->soc->reg_map; |
| const struct mtk_soc_data *soc = eth->soc; |
| struct mtk_tx_ring *ring = ð->tx_ring; |
| struct mtk_tx_dma *desc; |
| struct sk_buff *skb; |
| struct mtk_tx_buf *tx_buf; |
| u32 cpu, dma; |
| |
| cpu = ring->last_free_ptr; |
| dma = mtk_r32(eth, reg_map->qdma.drx_ptr); |
| |
| desc = mtk_qdma_phys_to_virt(ring, cpu); |
| |
| while ((cpu != dma) && budget) { |
| u32 next_cpu = desc->txd2; |
| int mac = 0; |
| |
| if ((desc->txd3 & TX_DMA_OWNER_CPU) == 0) |
| break; |
| |
| desc = mtk_qdma_phys_to_virt(ring, desc->txd2); |
| |
| tx_buf = mtk_desc_to_tx_buf(ring, desc, soc->txrx.txd_size); |
| if (tx_buf->flags & MTK_TX_FLAGS_FPORT1) |
| mac = MTK_GMAC2_ID; |
| else if (tx_buf->flags & MTK_TX_FLAGS_FPORT2) |
| mac = MTK_GMAC3_ID; |
| |
| skb = tx_buf->skb; |
| if (!skb) |
| break; |
| |
| if (skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC) { |
| bytes[mac] += skb->len; |
| done[mac]++; |
| budget--; |
| } |
| mtk_tx_unmap(eth, tx_buf, true); |
| |
| ring->last_free = desc; |
| atomic_inc(&ring->free_count); |
| |
| cpu = next_cpu; |
| } |
| |
| ring->last_free_ptr = cpu; |
| mtk_w32(eth, cpu, reg_map->qdma.crx_ptr); |
| } |
| |
| static void mtk_poll_tx_pdma(struct mtk_eth *eth, int budget, |
| unsigned int *done, unsigned int *bytes) |
| { |
| struct mtk_tx_ring *ring = ð->tx_ring; |
| struct mtk_tx_dma *desc; |
| struct sk_buff *skb; |
| struct mtk_tx_buf *tx_buf; |
| u32 cpu, dma; |
| |
| cpu = ring->cpu_idx; |
| dma = mtk_r32(eth, MT7628_TX_DTX_IDX0); |
| |
| while ((cpu != dma) && budget) { |
| tx_buf = &ring->buf[cpu]; |
| skb = tx_buf->skb; |
| if (!skb) |
| break; |
| |
| if (skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC) { |
| bytes[0] += skb->len; |
| done[0]++; |
| budget--; |
| } |
| |
| mtk_tx_unmap(eth, tx_buf, true); |
| |
| desc = ring->dma + cpu * eth->soc->txrx.txd_size; |
| ring->last_free = desc; |
| atomic_inc(&ring->free_count); |
| |
| cpu = NEXT_DESP_IDX(cpu, ring->dma_size); |
| } |
| |
| ring->cpu_idx = cpu; |
| } |
| |
| static int mtk_poll_tx(struct mtk_eth *eth, int budget) |
| { |
| struct mtk_tx_ring *ring = ð->tx_ring; |
| unsigned int done[MTK_MAX_DEVS]; |
| unsigned int bytes[MTK_MAX_DEVS]; |
| int total = 0, i; |
| |
| memset(done, 0, sizeof(done)); |
| memset(bytes, 0, sizeof(bytes)); |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) |
| mtk_poll_tx_qdma(eth, budget, done, bytes); |
| else |
| mtk_poll_tx_pdma(eth, budget, done, bytes); |
| |
| for (i = 0; i < MTK_MAC_COUNT; i++) { |
| if (!eth->netdev[i] || !done[i]) |
| continue; |
| netdev_completed_queue(eth->netdev[i], done[i], bytes[i]); |
| total += done[i]; |
| } |
| |
| if (mtk_queue_stopped(eth) && |
| (atomic_read(&ring->free_count) > ring->thresh)) |
| mtk_wake_queue(eth); |
| |
| return total; |
| } |
| |
| static void mtk_handle_status_irq(struct mtk_eth *eth) |
| { |
| u32 status2 = mtk_r32(eth, MTK_FE_INT_STATUS); |
| |
| if (unlikely(status2 & (MTK_GDM1_AF | MTK_GDM2_AF))) { |
| mtk_stats_update(eth); |
| mtk_w32(eth, (MTK_GDM1_AF | MTK_GDM2_AF), |
| MTK_FE_INT_STATUS); |
| } |
| } |
| |
| static int mtk_napi_tx(struct napi_struct *napi, int budget) |
| { |
| struct mtk_eth *eth = container_of(napi, struct mtk_eth, tx_napi); |
| const struct mtk_reg_map *reg_map = eth->soc->reg_map; |
| u32 status, mask; |
| int tx_done = 0; |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) |
| mtk_handle_status_irq(eth); |
| mtk_w32(eth, MTK_TX_DONE_INT, reg_map->tx_irq_status); |
| tx_done = mtk_poll_tx(eth, budget); |
| |
| if (unlikely(netif_msg_intr(eth))) { |
| status = mtk_r32(eth, reg_map->tx_irq_status); |
| mask = mtk_r32(eth, reg_map->tx_irq_mask); |
| dev_info(eth->dev, |
| "done tx %d, intr 0x%08x/0x%x\n", |
| tx_done, status, mask); |
| } |
| |
| if (tx_done == budget) |
| return budget; |
| |
| status = mtk_r32(eth, reg_map->tx_irq_status); |
| if (status & MTK_TX_DONE_INT) |
| return budget; |
| |
| if (napi_complete(napi)) |
| mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); |
| |
| return tx_done; |
| } |
| |
| static int mtk_napi_rx(struct napi_struct *napi, int budget) |
| { |
| struct mtk_napi *rx_napi = container_of(napi, struct mtk_napi, napi); |
| struct mtk_eth *eth = rx_napi->eth; |
| const struct mtk_reg_map *reg_map = eth->soc->reg_map; |
| struct mtk_rx_ring *ring = rx_napi->rx_ring; |
| u32 status, mask; |
| int rx_done = 0; |
| int remain_budget = budget; |
| |
| mtk_handle_status_irq(eth); |
| |
| poll_again: |
| mtk_w32(eth, MTK_RX_DONE_INT(ring->ring_no), reg_map->pdma.irq_status); |
| rx_done = mtk_poll_rx(napi, remain_budget, eth); |
| |
| if (unlikely(netif_msg_intr(eth))) { |
| status = mtk_r32(eth, reg_map->pdma.irq_status); |
| mask = mtk_r32(eth, reg_map->pdma.irq_mask); |
| dev_info(eth->dev, |
| "done rx %d, intr 0x%08x/0x%x\n", |
| rx_done, status, mask); |
| } |
| if (rx_done == remain_budget) |
| return budget; |
| |
| status = mtk_r32(eth, reg_map->pdma.irq_status); |
| if (status & MTK_RX_DONE_INT(ring->ring_no)) { |
| remain_budget -= rx_done; |
| goto poll_again; |
| } |
| |
| if (napi_complete(napi)) |
| mtk_rx_irq_enable(eth, MTK_RX_DONE_INT(ring->ring_no)); |
| |
| return rx_done + budget - remain_budget; |
| } |
| |
| static int mtk_tx_alloc(struct mtk_eth *eth) |
| { |
| const struct mtk_soc_data *soc = eth->soc; |
| struct mtk_tx_ring *ring = ð->tx_ring; |
| int i, sz = soc->txrx.txd_size; |
| struct mtk_tx_dma_v2 *txd, *pdma_txd; |
| |
| ring->buf = kcalloc(MTK_DMA_SIZE, sizeof(*ring->buf), |
| GFP_KERNEL); |
| if (!ring->buf) |
| goto no_tx_mem; |
| |
| if (!eth->soc->has_sram) |
| ring->dma = dma_alloc_coherent(eth->dma_dev, MTK_DMA_SIZE * sz, |
| &ring->phys, GFP_KERNEL); |
| else { |
| ring->dma = eth->scratch_ring + MTK_DMA_SIZE * sz; |
| ring->phys = eth->phy_scratch_ring + |
| MTK_DMA_SIZE * (dma_addr_t)sz; |
| } |
| |
| if (!ring->dma) |
| goto no_tx_mem; |
| |
| for (i = 0; i < MTK_DMA_SIZE; i++) { |
| int next = (i + 1) % MTK_DMA_SIZE; |
| u32 next_ptr = ring->phys + next * sz; |
| |
| txd = ring->dma + i * sz; |
| txd->txd2 = next_ptr; |
| txd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU; |
| txd->txd4 = 0; |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2) || |
| MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V3)) { |
| txd->txd5 = 0; |
| txd->txd6 = 0; |
| txd->txd7 = 0; |
| txd->txd8 = 0; |
| } |
| } |
| |
| /* On MT7688 (PDMA only) this driver uses the ring->dma structs |
| * only as the framework. The real HW descriptors are the PDMA |
| * descriptors in ring->dma_pdma. |
| */ |
| if (!MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { |
| ring->dma_pdma = dma_alloc_coherent(eth->dma_dev, |
| MTK_DMA_SIZE * sz, |
| &ring->phys_pdma, GFP_KERNEL); |
| if (!ring->dma_pdma) |
| goto no_tx_mem; |
| |
| for (i = 0; i < MTK_DMA_SIZE; i++) { |
| pdma_txd = ring->dma_pdma + i *sz; |
| |
| pdma_txd->txd2 = TX_DMA_DESP2_DEF; |
| pdma_txd->txd4 = 0; |
| } |
| } |
| |
| ring->dma_size = MTK_DMA_SIZE; |
| atomic_set(&ring->free_count, MTK_DMA_SIZE - 2); |
| ring->next_free = ring->dma; |
| ring->last_free = (void *)txd; |
| ring->last_free_ptr = (u32)(ring->phys + ((MTK_DMA_SIZE - 1) * sz)); |
| ring->thresh = MAX_SKB_FRAGS; |
| |
| /* make sure that all changes to the dma ring are flushed before we |
| * continue |
| */ |
| wmb(); |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { |
| mtk_w32(eth, ring->phys, soc->reg_map->qdma.ctx_ptr); |
| mtk_w32(eth, ring->phys, soc->reg_map->qdma.dtx_ptr); |
| mtk_w32(eth, |
| ring->phys + ((MTK_DMA_SIZE - 1) * sz), |
| soc->reg_map->qdma.crx_ptr); |
| mtk_w32(eth, ring->last_free_ptr, soc->reg_map->qdma.drx_ptr); |
| mtk_w32(eth, (QDMA_RES_THRES << 8) | QDMA_RES_THRES, |
| soc->reg_map->qdma.qtx_cfg); |
| } else { |
| mtk_w32(eth, ring->phys_pdma, MT7628_TX_BASE_PTR0); |
| mtk_w32(eth, MTK_DMA_SIZE, MT7628_TX_MAX_CNT0); |
| mtk_w32(eth, 0, MT7628_TX_CTX_IDX0); |
| mtk_w32(eth, MT7628_PST_DTX_IDX0, soc->reg_map->pdma.rst_idx); |
| } |
| |
| return 0; |
| |
| no_tx_mem: |
| return -ENOMEM; |
| } |
| |
| static void mtk_tx_clean(struct mtk_eth *eth) |
| { |
| const struct mtk_soc_data *soc = eth->soc; |
| struct mtk_tx_ring *ring = ð->tx_ring; |
| int i; |
| |
| if (ring->buf) { |
| for (i = 0; i < MTK_DMA_SIZE; i++) |
| mtk_tx_unmap(eth, &ring->buf[i], false); |
| kfree(ring->buf); |
| ring->buf = NULL; |
| } |
| |
| if (!eth->soc->has_sram && ring->dma) { |
| dma_free_coherent(eth->dma_dev, |
| MTK_DMA_SIZE * soc->txrx.txd_size, |
| ring->dma, ring->phys); |
| ring->dma = NULL; |
| } |
| |
| if (ring->dma_pdma) { |
| dma_free_coherent(eth->dma_dev, |
| MTK_DMA_SIZE * soc->txrx.txd_size, |
| ring->dma_pdma, ring->phys_pdma); |
| ring->dma_pdma = NULL; |
| } |
| } |
| |
| static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag) |
| { |
| const struct mtk_reg_map *reg_map = eth->soc->reg_map; |
| struct mtk_rx_ring *ring; |
| int rx_data_len, rx_dma_size; |
| int i; |
| u64 addr64 = 0; |
| |
| if (rx_flag == MTK_RX_FLAGS_QDMA) { |
| if (ring_no) |
| return -EINVAL; |
| ring = ð->rx_ring_qdma; |
| } else { |
| ring = ð->rx_ring[ring_no]; |
| } |
| |
| if (rx_flag == MTK_RX_FLAGS_HWLRO) { |
| rx_data_len = MTK_MAX_LRO_RX_LENGTH; |
| rx_dma_size = MTK_HW_LRO_DMA_SIZE; |
| } else { |
| rx_data_len = ETH_DATA_LEN; |
| rx_dma_size = MTK_DMA_SIZE; |
| } |
| |
| ring->frag_size = mtk_max_frag_size(rx_data_len); |
| ring->buf_size = mtk_max_buf_size(ring->frag_size); |
| ring->data = kcalloc(rx_dma_size, sizeof(*ring->data), |
| GFP_KERNEL); |
| if (!ring->data) |
| return -ENOMEM; |
| |
| for (i = 0; i < rx_dma_size; i++) { |
| ring->data[i] = netdev_alloc_frag(ring->frag_size); |
| if (!ring->data[i]) |
| return -ENOMEM; |
| } |
| |
| if ((!eth->soc->has_sram) || (eth->soc->has_sram |
| && (rx_flag != MTK_RX_FLAGS_NORMAL))) |
| ring->dma = dma_alloc_coherent(eth->dma_dev, |
| rx_dma_size * eth->soc->txrx.rxd_size, |
| &ring->phys, GFP_KERNEL); |
| else { |
| struct mtk_tx_ring *tx_ring = ð->tx_ring; |
| ring->dma = tx_ring->dma + MTK_DMA_SIZE * |
| eth->soc->txrx.txd_size * (ring_no + 1); |
| ring->phys = tx_ring->phys + MTK_DMA_SIZE * |
| eth->soc->txrx.txd_size * (ring_no + 1); |
| } |
| |
| if (!ring->dma) |
| return -ENOMEM; |
| |
| for (i = 0; i < rx_dma_size; i++) { |
| struct mtk_rx_dma_v2 *rxd; |
| |
| dma_addr_t dma_addr = dma_map_single(eth->dma_dev, |
| ring->data[i] + NET_SKB_PAD + eth->ip_align, |
| ring->buf_size, |
| DMA_FROM_DEVICE); |
| if (unlikely(dma_mapping_error(eth->dma_dev, dma_addr))) |
| return -ENOMEM; |
| |
| rxd = ring->dma + i * eth->soc->txrx.rxd_size; |
| rxd->rxd1 = (unsigned int)dma_addr; |
| |
| addr64 = (MTK_HAS_CAPS(eth->soc->caps, MTK_8GB_ADDRESSING)) ? |
| RX_DMA_SDP1(dma_addr) : 0; |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) |
| rxd->rxd2 = RX_DMA_LSO; |
| else |
| rxd->rxd2 = RX_DMA_PLEN0(ring->buf_size) | addr64; |
| |
| rxd->rxd3 = 0; |
| rxd->rxd4 = 0; |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_RX_V2)) { |
| rxd->rxd5 = 0; |
| rxd->rxd6 = 0; |
| rxd->rxd7 = 0; |
| rxd->rxd8 = 0; |
| } |
| } |
| ring->dma_size = rx_dma_size; |
| ring->calc_idx_update = false; |
| ring->calc_idx = rx_dma_size - 1; |
| ring->crx_idx_reg = (rx_flag == MTK_RX_FLAGS_QDMA) ? |
| MTK_QRX_CRX_IDX_CFG(ring_no) : |
| MTK_PRX_CRX_IDX_CFG(ring_no); |
| ring->ring_no = ring_no; |
| /* make sure that all changes to the dma ring are flushed before we |
| * continue |
| */ |
| wmb(); |
| |
| if (rx_flag == MTK_RX_FLAGS_QDMA) { |
| mtk_w32(eth, ring->phys, |
| reg_map->qdma.rx_ptr + ring_no * MTK_QRX_OFFSET); |
| mtk_w32(eth, rx_dma_size, |
| reg_map->qdma.rx_cnt_cfg + ring_no * MTK_QRX_OFFSET); |
| mtk_w32(eth, ring->calc_idx, |
| ring->crx_idx_reg); |
| mtk_w32(eth, MTK_PST_DRX_IDX_CFG(ring_no), |
| reg_map->qdma.rst_idx); |
| } else { |
| mtk_w32(eth, ring->phys, |
| reg_map->pdma.rx_ptr + ring_no * MTK_QRX_OFFSET); |
| mtk_w32(eth, rx_dma_size, |
| reg_map->pdma.rx_cnt_cfg + ring_no * MTK_QRX_OFFSET); |
| mtk_w32(eth, ring->calc_idx, |
| ring->crx_idx_reg); |
| mtk_w32(eth, MTK_PST_DRX_IDX_CFG(ring_no), |
| reg_map->pdma.rst_idx); |
| } |
| |
| return 0; |
| } |
| |
| static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring, int in_sram) |
| { |
| int i; |
| u64 addr64 = 0; |
| |
| if (ring->data && ring->dma) { |
| for (i = 0; i < ring->dma_size; i++) { |
| struct mtk_rx_dma *rxd; |
| |
| if (!ring->data[i]) |
| continue; |
| |
| rxd = ring->dma + i * eth->soc->txrx.rxd_size; |
| if (!rxd->rxd1) |
| continue; |
| |
| addr64 = (MTK_HAS_CAPS(eth->soc->caps, |
| MTK_8GB_ADDRESSING)) ? |
| ((u64)(rxd->rxd2 & 0xf)) << 32 : 0; |
| |
| dma_unmap_single(eth->dma_dev, |
| (u64)(rxd->rxd1 | addr64), |
| ring->buf_size, |
| DMA_FROM_DEVICE); |
| skb_free_frag(ring->data[i]); |
| } |
| kfree(ring->data); |
| ring->data = NULL; |
| } |
| |
| if(in_sram) |
| return; |
| |
| if (ring->dma) { |
| dma_free_coherent(eth->dma_dev, |
| ring->dma_size * eth->soc->txrx.rxd_size, |
| ring->dma, |
| ring->phys); |
| ring->dma = NULL; |
| } |
| } |
| |
| static int mtk_hwlro_rx_init(struct mtk_eth *eth) |
| { |
| int i; |
| u32 val; |
| u32 ring_ctrl_dw1 = 0, ring_ctrl_dw2 = 0, ring_ctrl_dw3 = 0; |
| u32 lro_ctrl_dw0 = 0, lro_ctrl_dw3 = 0; |
| |
| /* set LRO rings to auto-learn modes */ |
| ring_ctrl_dw2 |= MTK_RING_AUTO_LERAN_MODE; |
| |
| /* validate LRO ring */ |
| ring_ctrl_dw2 |= MTK_RING_VLD; |
| |
| /* set AGE timer (unit: 20us) */ |
| ring_ctrl_dw2 |= MTK_RING_AGE_TIME_H; |
| ring_ctrl_dw1 |= MTK_RING_AGE_TIME_L; |
| |
| /* set max AGG timer (unit: 20us) */ |
| ring_ctrl_dw2 |= MTK_RING_MAX_AGG_TIME; |
| |
| /* set max LRO AGG count */ |
| ring_ctrl_dw2 |= MTK_RING_MAX_AGG_CNT_L; |
| ring_ctrl_dw3 |= MTK_RING_MAX_AGG_CNT_H; |
| |
| for (i = 1; i <= MTK_HW_LRO_RING_NUM; i++) { |
| mtk_w32(eth, ring_ctrl_dw1, MTK_LRO_CTRL_DW1_CFG(i)); |
| mtk_w32(eth, ring_ctrl_dw2, MTK_LRO_CTRL_DW2_CFG(i)); |
| mtk_w32(eth, ring_ctrl_dw3, MTK_LRO_CTRL_DW3_CFG(i)); |
| } |
| |
| /* IPv4 checksum update enable */ |
| lro_ctrl_dw0 |= MTK_L3_CKS_UPD_EN; |
| |
| /* switch priority comparison to packet count mode */ |
| lro_ctrl_dw0 |= MTK_LRO_ALT_PKT_CNT_MODE; |
| |
| /* bandwidth threshold setting */ |
| mtk_w32(eth, MTK_HW_LRO_BW_THRE, MTK_PDMA_LRO_CTRL_DW2); |
| |
| /* auto-learn score delta setting */ |
| mtk_w32(eth, MTK_HW_LRO_REPLACE_DELTA, MTK_LRO_ALT_SCORE_DELTA); |
| |
| /* set refresh timer for altering flows to 1 sec. (unit: 20us) */ |
| mtk_w32(eth, (MTK_HW_LRO_TIMER_UNIT << 16) | MTK_HW_LRO_REFRESH_TIME, |
| MTK_PDMA_LRO_ALT_REFRESH_TIMER); |
| |
| /* the minimal remaining room of SDL0 in RXD for lro aggregation */ |
| lro_ctrl_dw3 |= MTK_LRO_MIN_RXD_SDL; |
| |
| if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_RX_V2)) { |
| val = mtk_r32(eth, MTK_PDMA_RX_CFG); |
| mtk_w32(eth, val | (MTK_PDMA_LRO_SDL << MTK_RX_CFG_SDL_OFFSET), |
| MTK_PDMA_RX_CFG); |
| |
| lro_ctrl_dw0 |= MTK_PDMA_LRO_SDL << MTK_CTRL_DW0_SDL_OFFSET; |
| } else { |
| /* set HW LRO mode & the max aggregation count for rx packets */ |
| lro_ctrl_dw3 |= MTK_ADMA_MODE | (MTK_HW_LRO_MAX_AGG_CNT & 0xff); |
| } |
| |
| /* enable HW LRO */ |
| lro_ctrl_dw0 |= MTK_LRO_EN; |
| |
| /* enable cpu reason black list */ |
| lro_ctrl_dw0 |= MTK_LRO_CRSN_BNW; |
| |
| mtk_w32(eth, lro_ctrl_dw3, MTK_PDMA_LRO_CTRL_DW3); |
| mtk_w32(eth, lro_ctrl_dw0, MTK_PDMA_LRO_CTRL_DW0); |
| |
| /* no use PPE cpu reason */ |
| mtk_w32(eth, 0xffffffff, MTK_PDMA_LRO_CTRL_DW1); |
| |
| return 0; |
| } |
| |
| static void mtk_hwlro_rx_uninit(struct mtk_eth *eth) |
| { |
| int i; |
| u32 val; |
| |
| /* relinquish lro rings, flush aggregated packets */ |
| mtk_w32(eth, MTK_LRO_RING_RELINGUISH_REQ, MTK_PDMA_LRO_CTRL_DW0); |
| |
| /* wait for relinquishments done */ |
| for (i = 0; i < 10; i++) { |
| val = mtk_r32(eth, MTK_PDMA_LRO_CTRL_DW0); |
| if (val & MTK_LRO_RING_RELINGUISH_DONE) { |
| mdelay(20); |
|