1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2018 MediaTek Inc.
5 * Author: Weijie Gao <weijie.gao@mediatek.com>
6 * Author: Mark Lee <mark-mc.lee@mediatek.com>
20 #include <linux/err.h>
21 #include <linux/ioport.h>
22 #include <linux/mdio.h>
23 #include <linux/mii.h>
27 #define NUM_TX_DESC 24
28 #define NUM_RX_DESC 24
29 #define TX_TOTAL_BUF_SIZE (NUM_TX_DESC * PKTSIZE_ALIGN)
30 #define RX_TOTAL_BUF_SIZE (NUM_RX_DESC * PKTSIZE_ALIGN)
31 #define TOTAL_PKT_BUF_SIZE (TX_TOTAL_BUF_SIZE + RX_TOTAL_BUF_SIZE)
33 #define MT7530_NUM_PHYS 5
34 #define MT7530_DFL_SMI_ADDR 31
36 #define MT7530_PHY_ADDR(base, addr) \
37 (((base) + (addr)) & 0x1f)
39 #define GDMA_FWD_TO_CPU \
45 (DP_PDMA << MYMAC_DP_S) | \
46 (DP_PDMA << BC_DP_S) | \
47 (DP_PDMA << MC_DP_S) | \
50 #define GDMA_FWD_DISCARD \
56 (DP_DISCARD << MYMAC_DP_S) | \
57 (DP_DISCARD << BC_DP_S) | \
58 (DP_DISCARD << MC_DP_S) | \
59 (DP_DISCARD << UN_DP_S))
61 struct pdma_rxd_info1 {
65 struct pdma_rxd_info2 {
74 struct pdma_rxd_info3 {
78 struct pdma_rxd_info4 {
92 struct pdma_rxd_info1 rxd_info1;
93 struct pdma_rxd_info2 rxd_info2;
94 struct pdma_rxd_info3 rxd_info3;
95 struct pdma_rxd_info4 rxd_info4;
98 struct pdma_txd_info1 {
102 struct pdma_txd_info2 {
111 struct pdma_txd_info3 {
115 struct pdma_txd_info4 {
126 struct pdma_txd_info1 txd_info1;
127 struct pdma_txd_info2 txd_info2;
128 struct pdma_txd_info3 txd_info3;
129 struct pdma_txd_info4 txd_info4;
142 struct mtk_eth_priv {
143 char pkt_pool[TOTAL_PKT_BUF_SIZE] __aligned(ARCH_DMA_MINALIGN);
145 struct pdma_txdesc *tx_ring_noc;
146 struct pdma_rxdesc *rx_ring_noc;
148 int rx_dma_owner_idx0;
149 int tx_cpu_owner_idx0;
151 void __iomem *fe_base;
152 void __iomem *gmac_base;
153 void __iomem *ethsys_base;
154 void __iomem *sgmii_base;
156 struct mii_dev *mdio_bus;
157 int (*mii_read)(struct mtk_eth_priv *priv, u8 phy, u8 reg);
158 int (*mii_write)(struct mtk_eth_priv *priv, u8 phy, u8 reg, u16 val);
159 int (*mmd_read)(struct mtk_eth_priv *priv, u8 addr, u8 devad, u16 reg);
160 int (*mmd_write)(struct mtk_eth_priv *priv, u8 addr, u8 devad, u16 reg,
169 struct phy_device *phydev;
174 int (*switch_init)(struct mtk_eth_priv *priv);
178 struct gpio_desc rst_gpio;
181 struct reset_ctl rst_fe;
182 struct reset_ctl rst_mcm;
185 static void mtk_pdma_write(struct mtk_eth_priv *priv, u32 reg, u32 val)
187 writel(val, priv->fe_base + PDMA_BASE + reg);
190 static void mtk_pdma_rmw(struct mtk_eth_priv *priv, u32 reg, u32 clr,
193 clrsetbits_le32(priv->fe_base + PDMA_BASE + reg, clr, set);
196 static void mtk_gdma_write(struct mtk_eth_priv *priv, int no, u32 reg,
202 gdma_base = GDMA2_BASE;
204 gdma_base = GDMA1_BASE;
206 writel(val, priv->fe_base + gdma_base + reg);
209 static u32 mtk_gmac_read(struct mtk_eth_priv *priv, u32 reg)
211 return readl(priv->gmac_base + reg);
214 static void mtk_gmac_write(struct mtk_eth_priv *priv, u32 reg, u32 val)
216 writel(val, priv->gmac_base + reg);
219 static void mtk_gmac_rmw(struct mtk_eth_priv *priv, u32 reg, u32 clr, u32 set)
221 clrsetbits_le32(priv->gmac_base + reg, clr, set);
224 static void mtk_ethsys_rmw(struct mtk_eth_priv *priv, u32 reg, u32 clr,
227 clrsetbits_le32(priv->ethsys_base + reg, clr, set);
230 /* Direct MDIO clause 22/45 access via SoC */
231 static int mtk_mii_rw(struct mtk_eth_priv *priv, u8 phy, u8 reg, u16 data,
237 val = (st << MDIO_ST_S) |
238 ((cmd << MDIO_CMD_S) & MDIO_CMD_M) |
239 (((u32)phy << MDIO_PHY_ADDR_S) & MDIO_PHY_ADDR_M) |
240 (((u32)reg << MDIO_REG_ADDR_S) & MDIO_REG_ADDR_M);
242 if (cmd == MDIO_CMD_WRITE)
243 val |= data & MDIO_RW_DATA_M;
245 mtk_gmac_write(priv, GMAC_PIAC_REG, val | PHY_ACS_ST);
247 ret = wait_for_bit_le32(priv->gmac_base + GMAC_PIAC_REG,
248 PHY_ACS_ST, 0, 5000, 0);
250 pr_warn("MDIO access timeout\n");
254 if (cmd == MDIO_CMD_READ) {
255 val = mtk_gmac_read(priv, GMAC_PIAC_REG);
256 return val & MDIO_RW_DATA_M;
262 /* Direct MDIO clause 22 read via SoC */
263 static int mtk_mii_read(struct mtk_eth_priv *priv, u8 phy, u8 reg)
265 return mtk_mii_rw(priv, phy, reg, 0, MDIO_CMD_READ, MDIO_ST_C22);
268 /* Direct MDIO clause 22 write via SoC */
269 static int mtk_mii_write(struct mtk_eth_priv *priv, u8 phy, u8 reg, u16 data)
271 return mtk_mii_rw(priv, phy, reg, data, MDIO_CMD_WRITE, MDIO_ST_C22);
274 /* Direct MDIO clause 45 read via SoC */
275 static int mtk_mmd_read(struct mtk_eth_priv *priv, u8 addr, u8 devad, u16 reg)
279 ret = mtk_mii_rw(priv, addr, devad, reg, MDIO_CMD_ADDR, MDIO_ST_C45);
283 return mtk_mii_rw(priv, addr, devad, 0, MDIO_CMD_READ_C45,
287 /* Direct MDIO clause 45 write via SoC */
288 static int mtk_mmd_write(struct mtk_eth_priv *priv, u8 addr, u8 devad,
293 ret = mtk_mii_rw(priv, addr, devad, reg, MDIO_CMD_ADDR, MDIO_ST_C45);
297 return mtk_mii_rw(priv, addr, devad, val, MDIO_CMD_WRITE,
301 /* Indirect MDIO clause 45 read via MII registers */
302 static int mtk_mmd_ind_read(struct mtk_eth_priv *priv, u8 addr, u8 devad,
307 ret = priv->mii_write(priv, addr, MII_MMD_ACC_CTL_REG,
308 (MMD_ADDR << MMD_CMD_S) |
309 ((devad << MMD_DEVAD_S) & MMD_DEVAD_M));
313 ret = priv->mii_write(priv, addr, MII_MMD_ADDR_DATA_REG, reg);
317 ret = priv->mii_write(priv, addr, MII_MMD_ACC_CTL_REG,
318 (MMD_DATA << MMD_CMD_S) |
319 ((devad << MMD_DEVAD_S) & MMD_DEVAD_M));
323 return priv->mii_read(priv, addr, MII_MMD_ADDR_DATA_REG);
326 /* Indirect MDIO clause 45 write via MII registers */
327 static int mtk_mmd_ind_write(struct mtk_eth_priv *priv, u8 addr, u8 devad,
332 ret = priv->mii_write(priv, addr, MII_MMD_ACC_CTL_REG,
333 (MMD_ADDR << MMD_CMD_S) |
334 ((devad << MMD_DEVAD_S) & MMD_DEVAD_M));
338 ret = priv->mii_write(priv, addr, MII_MMD_ADDR_DATA_REG, reg);
342 ret = priv->mii_write(priv, addr, MII_MMD_ACC_CTL_REG,
343 (MMD_DATA << MMD_CMD_S) |
344 ((devad << MMD_DEVAD_S) & MMD_DEVAD_M));
348 return priv->mii_write(priv, addr, MII_MMD_ADDR_DATA_REG, val);
351 static int mtk_mdio_read(struct mii_dev *bus, int addr, int devad, int reg)
353 struct mtk_eth_priv *priv = bus->priv;
356 return priv->mii_read(priv, addr, reg);
358 return priv->mmd_read(priv, addr, devad, reg);
361 static int mtk_mdio_write(struct mii_dev *bus, int addr, int devad, int reg,
364 struct mtk_eth_priv *priv = bus->priv;
367 return priv->mii_write(priv, addr, reg, val);
369 return priv->mmd_write(priv, addr, devad, reg, val);
372 static int mtk_mdio_register(struct udevice *dev)
374 struct mtk_eth_priv *priv = dev_get_priv(dev);
375 struct mii_dev *mdio_bus = mdio_alloc();
381 /* Assign MDIO access APIs according to the switch/phy */
384 priv->mii_read = mtk_mii_read;
385 priv->mii_write = mtk_mii_write;
386 priv->mmd_read = mtk_mmd_ind_read;
387 priv->mmd_write = mtk_mmd_ind_write;
390 priv->mii_read = mtk_mii_read;
391 priv->mii_write = mtk_mii_write;
392 priv->mmd_read = mtk_mmd_read;
393 priv->mmd_write = mtk_mmd_write;
396 mdio_bus->read = mtk_mdio_read;
397 mdio_bus->write = mtk_mdio_write;
398 snprintf(mdio_bus->name, sizeof(mdio_bus->name), dev->name);
400 mdio_bus->priv = (void *)priv;
402 ret = mdio_register(mdio_bus);
407 priv->mdio_bus = mdio_bus;
413 * MT7530 Internal Register Address Bits
414 * -------------------------------------------------------------------
415 * | 15 14 13 12 11 10 9 8 7 6 | 5 4 3 2 | 1 0 |
416 * |----------------------------------------|---------------|--------|
417 * | Page Address | Reg Address | Unused |
418 * -------------------------------------------------------------------
421 static int mt7530_reg_read(struct mtk_eth_priv *priv, u32 reg, u32 *data)
423 int ret, low_word, high_word;
425 /* Write page address */
426 ret = mtk_mii_write(priv, priv->mt7530_smi_addr, 0x1f, reg >> 6);
431 low_word = mtk_mii_read(priv, priv->mt7530_smi_addr, (reg >> 2) & 0xf);
436 high_word = mtk_mii_read(priv, priv->mt7530_smi_addr, 0x10);
441 *data = ((u32)high_word << 16) | (low_word & 0xffff);
446 static int mt7530_reg_write(struct mtk_eth_priv *priv, u32 reg, u32 data)
450 /* Write page address */
451 ret = mtk_mii_write(priv, priv->mt7530_smi_addr, 0x1f, reg >> 6);
456 ret = mtk_mii_write(priv, priv->mt7530_smi_addr, (reg >> 2) & 0xf,
461 /* Write high word */
462 return mtk_mii_write(priv, priv->mt7530_smi_addr, 0x10, data >> 16);
465 static void mt7530_reg_rmw(struct mtk_eth_priv *priv, u32 reg, u32 clr,
470 mt7530_reg_read(priv, reg, &val);
473 mt7530_reg_write(priv, reg, val);
476 static void mt7530_core_reg_write(struct mtk_eth_priv *priv, u32 reg, u32 val)
478 u8 phy_addr = MT7530_PHY_ADDR(priv->mt7530_phy_base, 0);
480 mtk_mmd_ind_write(priv, phy_addr, 0x1f, reg, val);
483 static int mt7530_pad_clk_setup(struct mtk_eth_priv *priv, int mode)
485 u32 ncpo1, ssc_delta;
488 case PHY_INTERFACE_MODE_RGMII:
493 printf("error: xMII mode %d not supported\n", mode);
497 /* Disable MT7530 core clock */
498 mt7530_core_reg_write(priv, CORE_TRGMII_GSW_CLK_CG, 0);
500 /* Disable MT7530 PLL */
501 mt7530_core_reg_write(priv, CORE_GSWPLL_GRP1,
502 (2 << RG_GSWPLL_POSDIV_200M_S) |
503 (32 << RG_GSWPLL_FBKDIV_200M_S));
505 /* For MT7530 core clock = 500Mhz */
506 mt7530_core_reg_write(priv, CORE_GSWPLL_GRP2,
507 (1 << RG_GSWPLL_POSDIV_500M_S) |
508 (25 << RG_GSWPLL_FBKDIV_500M_S));
510 /* Enable MT7530 PLL */
511 mt7530_core_reg_write(priv, CORE_GSWPLL_GRP1,
512 (2 << RG_GSWPLL_POSDIV_200M_S) |
513 (32 << RG_GSWPLL_FBKDIV_200M_S) |
518 mt7530_core_reg_write(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
520 /* Setup the MT7530 TRGMII Tx Clock */
521 mt7530_core_reg_write(priv, CORE_PLL_GROUP5, ncpo1);
522 mt7530_core_reg_write(priv, CORE_PLL_GROUP6, 0);
523 mt7530_core_reg_write(priv, CORE_PLL_GROUP10, ssc_delta);
524 mt7530_core_reg_write(priv, CORE_PLL_GROUP11, ssc_delta);
525 mt7530_core_reg_write(priv, CORE_PLL_GROUP4, RG_SYSPLL_DDSFBK_EN |
526 RG_SYSPLL_BIAS_EN | RG_SYSPLL_BIAS_LPF_EN);
528 mt7530_core_reg_write(priv, CORE_PLL_GROUP2,
529 RG_SYSPLL_EN_NORMAL | RG_SYSPLL_VODEN |
530 (1 << RG_SYSPLL_POSDIV_S));
532 mt7530_core_reg_write(priv, CORE_PLL_GROUP7,
533 RG_LCDDS_PCW_NCPO_CHG | (3 << RG_LCCDS_C_S) |
534 RG_LCDDS_PWDB | RG_LCDDS_ISO_EN);
536 /* Enable MT7530 core clock */
537 mt7530_core_reg_write(priv, CORE_TRGMII_GSW_CLK_CG,
538 REG_GSWCK_EN | REG_TRGMIICK_EN);
543 static int mt7530_setup(struct mtk_eth_priv *priv)
545 u16 phy_addr, phy_val;
549 /* Select 250MHz clk for RGMII mode */
550 mtk_ethsys_rmw(priv, ETHSYS_CLKCFG0_REG,
551 ETHSYS_TRGMII_CLK_SEL362_5, 0);
553 /* Global reset switch */
555 reset_assert(&priv->rst_mcm);
557 reset_deassert(&priv->rst_mcm);
559 } else if (dm_gpio_is_valid(&priv->rst_gpio)) {
560 dm_gpio_set_value(&priv->rst_gpio, 0);
562 dm_gpio_set_value(&priv->rst_gpio, 1);
566 /* Modify HWTRAP first to allow direct access to internal PHYs */
567 mt7530_reg_read(priv, HWTRAP_REG, &val);
570 mt7530_reg_write(priv, MHWTRAP_REG, val);
572 /* Calculate the phy base address */
573 val = ((val & SMI_ADDR_M) >> SMI_ADDR_S) << 3;
574 priv->mt7530_phy_base = (val | 0x7) + 1;
577 for (i = 0; i < MT7530_NUM_PHYS; i++) {
578 phy_addr = MT7530_PHY_ADDR(priv->mt7530_phy_base, i);
579 phy_val = priv->mii_read(priv, phy_addr, MII_BMCR);
580 phy_val |= BMCR_PDOWN;
581 priv->mii_write(priv, phy_addr, MII_BMCR, phy_val);
584 /* Force MAC link down before reset */
585 mt7530_reg_write(priv, PCMR_REG(5), FORCE_MODE);
586 mt7530_reg_write(priv, PCMR_REG(6), FORCE_MODE);
589 mt7530_reg_write(priv, SYS_CTRL_REG, SW_SYS_RST | SW_REG_RST);
592 val = (1 << IPG_CFG_S) |
593 MAC_MODE | FORCE_MODE |
594 MAC_TX_EN | MAC_RX_EN |
595 BKOFF_EN | BACKPR_EN |
596 (SPEED_1000M << FORCE_SPD_S) |
597 FORCE_DPX | FORCE_LINK;
599 /* MT7530 Port6: Forced 1000M/FD, FC disabled */
600 mt7530_reg_write(priv, PCMR_REG(6), val);
602 /* MT7530 Port5: Forced link down */
603 mt7530_reg_write(priv, PCMR_REG(5), FORCE_MODE);
605 /* MT7530 Port6: Set to RGMII */
606 mt7530_reg_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_M, P6_INTF_MODE_RGMII);
608 /* Hardware Trap: Enable Port6, Disable Port5 */
609 mt7530_reg_read(priv, HWTRAP_REG, &val);
610 val |= CHG_TRAP | LOOPDET_DIS | P5_INTF_DIS |
611 (P5_INTF_SEL_GMAC5 << P5_INTF_SEL_S) |
612 (P5_INTF_MODE_RGMII << P5_INTF_MODE_S);
613 val &= ~(C_MDIO_BPS | P6_INTF_DIS);
614 mt7530_reg_write(priv, MHWTRAP_REG, val);
616 /* Setup switch core pll */
617 mt7530_pad_clk_setup(priv, priv->phy_interface);
619 /* Lower Tx Driving for TRGMII path */
620 for (i = 0 ; i < NUM_TRGMII_CTRL ; i++)
621 mt7530_reg_write(priv, MT7530_TRGMII_TD_ODT(i),
622 (8 << TD_DM_DRVP_S) | (8 << TD_DM_DRVN_S));
624 for (i = 0 ; i < NUM_TRGMII_CTRL; i++)
625 mt7530_reg_rmw(priv, MT7530_TRGMII_RD(i), RD_TAP_M, 16);
628 for (i = 0; i < MT7530_NUM_PHYS; i++) {
629 phy_addr = MT7530_PHY_ADDR(priv->mt7530_phy_base, i);
630 phy_val = priv->mii_read(priv, phy_addr, MII_BMCR);
631 phy_val &= ~BMCR_PDOWN;
632 priv->mii_write(priv, phy_addr, MII_BMCR, phy_val);
635 /* Set port isolation */
636 for (i = 0; i < 8; i++) {
637 /* Set port matrix mode */
639 mt7530_reg_write(priv, PCR_REG(i),
640 (0x40 << PORT_MATRIX_S));
642 mt7530_reg_write(priv, PCR_REG(i),
643 (0x3f << PORT_MATRIX_S));
645 /* Set port mode to user port */
646 mt7530_reg_write(priv, PVC_REG(i),
647 (0x8100 << STAG_VPID_S) |
648 (VLAN_ATTR_USER << VLAN_ATTR_S));
654 static void mtk_phy_link_adjust(struct mtk_eth_priv *priv)
656 u16 lcl_adv = 0, rmt_adv = 0;
660 mcr = (1 << IPG_CFG_S) |
661 (MAC_RX_PKT_LEN_1536 << MAC_RX_PKT_LEN_S) |
662 MAC_MODE | FORCE_MODE |
663 MAC_TX_EN | MAC_RX_EN |
664 BKOFF_EN | BACKPR_EN;
666 switch (priv->phydev->speed) {
668 mcr |= (SPEED_10M << FORCE_SPD_S);
671 mcr |= (SPEED_100M << FORCE_SPD_S);
674 mcr |= (SPEED_1000M << FORCE_SPD_S);
678 if (priv->phydev->link)
681 if (priv->phydev->duplex) {
684 if (priv->phydev->pause)
685 rmt_adv = LPA_PAUSE_CAP;
686 if (priv->phydev->asym_pause)
687 rmt_adv |= LPA_PAUSE_ASYM;
689 if (priv->phydev->advertising & ADVERTISED_Pause)
690 lcl_adv |= ADVERTISE_PAUSE_CAP;
691 if (priv->phydev->advertising & ADVERTISED_Asym_Pause)
692 lcl_adv |= ADVERTISE_PAUSE_ASYM;
694 flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv);
696 if (flowctrl & FLOW_CTRL_TX)
698 if (flowctrl & FLOW_CTRL_RX)
701 debug("rx pause %s, tx pause %s\n",
702 flowctrl & FLOW_CTRL_RX ? "enabled" : "disabled",
703 flowctrl & FLOW_CTRL_TX ? "enabled" : "disabled");
706 mtk_gmac_write(priv, GMAC_PORT_MCR(priv->gmac_id), mcr);
709 static int mtk_phy_start(struct mtk_eth_priv *priv)
711 struct phy_device *phydev = priv->phydev;
714 ret = phy_startup(phydev);
717 debug("Could not initialize PHY %s\n", phydev->dev->name);
722 debug("%s: link down.\n", phydev->dev->name);
726 mtk_phy_link_adjust(priv);
728 debug("Speed: %d, %s duplex%s\n", phydev->speed,
729 (phydev->duplex) ? "full" : "half",
730 (phydev->port == PORT_FIBRE) ? ", fiber mode" : "");
735 static int mtk_phy_probe(struct udevice *dev)
737 struct mtk_eth_priv *priv = dev_get_priv(dev);
738 struct phy_device *phydev;
740 phydev = phy_connect(priv->mdio_bus, priv->phy_addr, dev,
741 priv->phy_interface);
745 phydev->supported &= PHY_GBIT_FEATURES;
746 phydev->advertising = phydev->supported;
748 priv->phydev = phydev;
754 static void mtk_sgmii_init(struct mtk_eth_priv *priv)
756 /* Set SGMII GEN2 speed(2.5G) */
757 clrsetbits_le32(priv->sgmii_base + SGMSYS_GEN2_SPEED,
758 SGMSYS_SPEED_2500, SGMSYS_SPEED_2500);
760 /* Disable SGMII AN */
761 clrsetbits_le32(priv->sgmii_base + SGMSYS_PCS_CONTROL_1,
764 /* SGMII force mode setting */
765 writel(SGMII_FORCE_MODE, priv->sgmii_base + SGMSYS_SGMII_MODE);
767 /* Release PHYA power down state */
768 clrsetbits_le32(priv->sgmii_base + SGMSYS_QPHY_PWR_STATE_CTRL,
772 static void mtk_mac_init(struct mtk_eth_priv *priv)
777 switch (priv->phy_interface) {
778 case PHY_INTERFACE_MODE_RGMII_RXID:
779 case PHY_INTERFACE_MODE_RGMII:
780 ge_mode = GE_MODE_RGMII;
782 case PHY_INTERFACE_MODE_SGMII:
783 ge_mode = GE_MODE_RGMII;
784 mtk_ethsys_rmw(priv, ETHSYS_SYSCFG0_REG, SYSCFG0_SGMII_SEL_M,
785 SYSCFG0_SGMII_SEL(priv->gmac_id));
786 mtk_sgmii_init(priv);
788 case PHY_INTERFACE_MODE_MII:
789 case PHY_INTERFACE_MODE_GMII:
790 ge_mode = GE_MODE_MII;
792 case PHY_INTERFACE_MODE_RMII:
793 ge_mode = GE_MODE_RMII;
799 /* set the gmac to the right mode */
800 mtk_ethsys_rmw(priv, ETHSYS_SYSCFG0_REG,
801 SYSCFG0_GE_MODE_M << SYSCFG0_GE_MODE_S(priv->gmac_id),
802 ge_mode << SYSCFG0_GE_MODE_S(priv->gmac_id));
804 if (priv->force_mode) {
805 mcr = (1 << IPG_CFG_S) |
806 (MAC_RX_PKT_LEN_1536 << MAC_RX_PKT_LEN_S) |
807 MAC_MODE | FORCE_MODE |
808 MAC_TX_EN | MAC_RX_EN |
809 BKOFF_EN | BACKPR_EN |
812 switch (priv->speed) {
814 mcr |= SPEED_10M << FORCE_SPD_S;
817 mcr |= SPEED_100M << FORCE_SPD_S;
820 mcr |= SPEED_1000M << FORCE_SPD_S;
827 mtk_gmac_write(priv, GMAC_PORT_MCR(priv->gmac_id), mcr);
830 if (priv->soc == SOC_MT7623) {
831 /* Lower Tx Driving for TRGMII path */
832 for (i = 0 ; i < NUM_TRGMII_CTRL; i++)
833 mtk_gmac_write(priv, GMAC_TRGMII_TD_ODT(i),
834 (8 << TD_DM_DRVP_S) |
835 (8 << TD_DM_DRVN_S));
837 mtk_gmac_rmw(priv, GMAC_TRGMII_RCK_CTRL, 0,
838 RX_RST | RXC_DQSISEL);
839 mtk_gmac_rmw(priv, GMAC_TRGMII_RCK_CTRL, RX_RST, 0);
843 static void mtk_eth_fifo_init(struct mtk_eth_priv *priv)
845 char *pkt_base = priv->pkt_pool;
848 mtk_pdma_rmw(priv, PDMA_GLO_CFG_REG, 0xffff0000, 0);
851 memset(priv->tx_ring_noc, 0, NUM_TX_DESC * sizeof(struct pdma_txdesc));
852 memset(priv->rx_ring_noc, 0, NUM_RX_DESC * sizeof(struct pdma_rxdesc));
853 memset(priv->pkt_pool, 0, TOTAL_PKT_BUF_SIZE);
855 flush_dcache_range((u32)pkt_base, (u32)(pkt_base + TOTAL_PKT_BUF_SIZE));
857 priv->rx_dma_owner_idx0 = 0;
858 priv->tx_cpu_owner_idx0 = 0;
860 for (i = 0; i < NUM_TX_DESC; i++) {
861 priv->tx_ring_noc[i].txd_info2.LS0 = 1;
862 priv->tx_ring_noc[i].txd_info2.DDONE = 1;
863 priv->tx_ring_noc[i].txd_info4.FPORT = priv->gmac_id + 1;
865 priv->tx_ring_noc[i].txd_info1.SDP0 = virt_to_phys(pkt_base);
866 pkt_base += PKTSIZE_ALIGN;
869 for (i = 0; i < NUM_RX_DESC; i++) {
870 priv->rx_ring_noc[i].rxd_info2.PLEN0 = PKTSIZE_ALIGN;
871 priv->rx_ring_noc[i].rxd_info1.PDP0 = virt_to_phys(pkt_base);
872 pkt_base += PKTSIZE_ALIGN;
875 mtk_pdma_write(priv, TX_BASE_PTR_REG(0),
876 virt_to_phys(priv->tx_ring_noc));
877 mtk_pdma_write(priv, TX_MAX_CNT_REG(0), NUM_TX_DESC);
878 mtk_pdma_write(priv, TX_CTX_IDX_REG(0), priv->tx_cpu_owner_idx0);
880 mtk_pdma_write(priv, RX_BASE_PTR_REG(0),
881 virt_to_phys(priv->rx_ring_noc));
882 mtk_pdma_write(priv, RX_MAX_CNT_REG(0), NUM_RX_DESC);
883 mtk_pdma_write(priv, RX_CRX_IDX_REG(0), NUM_RX_DESC - 1);
885 mtk_pdma_write(priv, PDMA_RST_IDX_REG, RST_DTX_IDX0 | RST_DRX_IDX0);
888 static int mtk_eth_start(struct udevice *dev)
890 struct mtk_eth_priv *priv = dev_get_priv(dev);
894 reset_assert(&priv->rst_fe);
896 reset_deassert(&priv->rst_fe);
899 /* Packets forward to PDMA */
900 mtk_gdma_write(priv, priv->gmac_id, GDMA_IG_CTRL_REG, GDMA_FWD_TO_CPU);
902 if (priv->gmac_id == 0)
903 mtk_gdma_write(priv, 1, GDMA_IG_CTRL_REG, GDMA_FWD_DISCARD);
905 mtk_gdma_write(priv, 0, GDMA_IG_CTRL_REG, GDMA_FWD_DISCARD);
909 mtk_eth_fifo_init(priv);
912 if (priv->sw == SW_NONE) {
913 ret = mtk_phy_start(priv);
918 mtk_pdma_rmw(priv, PDMA_GLO_CFG_REG, 0,
919 TX_WB_DDONE | RX_DMA_EN | TX_DMA_EN);
925 static void mtk_eth_stop(struct udevice *dev)
927 struct mtk_eth_priv *priv = dev_get_priv(dev);
929 mtk_pdma_rmw(priv, PDMA_GLO_CFG_REG,
930 TX_WB_DDONE | RX_DMA_EN | TX_DMA_EN, 0);
933 wait_for_bit_le32(priv->fe_base + PDMA_BASE + PDMA_GLO_CFG_REG,
934 RX_DMA_BUSY | TX_DMA_BUSY, 0, 5000, 0);
937 static int mtk_eth_write_hwaddr(struct udevice *dev)
939 struct eth_pdata *pdata = dev_get_platdata(dev);
940 struct mtk_eth_priv *priv = dev_get_priv(dev);
941 unsigned char *mac = pdata->enetaddr;
942 u32 macaddr_lsb, macaddr_msb;
944 macaddr_msb = ((u32)mac[0] << 8) | (u32)mac[1];
945 macaddr_lsb = ((u32)mac[2] << 24) | ((u32)mac[3] << 16) |
946 ((u32)mac[4] << 8) | (u32)mac[5];
948 mtk_gdma_write(priv, priv->gmac_id, GDMA_MAC_MSB_REG, macaddr_msb);
949 mtk_gdma_write(priv, priv->gmac_id, GDMA_MAC_LSB_REG, macaddr_lsb);
954 static int mtk_eth_send(struct udevice *dev, void *packet, int length)
956 struct mtk_eth_priv *priv = dev_get_priv(dev);
957 u32 idx = priv->tx_cpu_owner_idx0;
960 if (!priv->tx_ring_noc[idx].txd_info2.DDONE) {
961 debug("mtk-eth: TX DMA descriptor ring is full\n");
965 pkt_base = (void *)phys_to_virt(priv->tx_ring_noc[idx].txd_info1.SDP0);
966 memcpy(pkt_base, packet, length);
967 flush_dcache_range((u32)pkt_base, (u32)pkt_base +
968 roundup(length, ARCH_DMA_MINALIGN));
970 priv->tx_ring_noc[idx].txd_info2.SDL0 = length;
971 priv->tx_ring_noc[idx].txd_info2.DDONE = 0;
973 priv->tx_cpu_owner_idx0 = (priv->tx_cpu_owner_idx0 + 1) % NUM_TX_DESC;
974 mtk_pdma_write(priv, TX_CTX_IDX_REG(0), priv->tx_cpu_owner_idx0);
979 static int mtk_eth_recv(struct udevice *dev, int flags, uchar **packetp)
981 struct mtk_eth_priv *priv = dev_get_priv(dev);
982 u32 idx = priv->rx_dma_owner_idx0;
986 if (!priv->rx_ring_noc[idx].rxd_info2.DDONE) {
987 debug("mtk-eth: RX DMA descriptor ring is empty\n");
991 length = priv->rx_ring_noc[idx].rxd_info2.PLEN0;
992 pkt_base = (void *)phys_to_virt(priv->rx_ring_noc[idx].rxd_info1.PDP0);
993 invalidate_dcache_range((u32)pkt_base, (u32)pkt_base +
994 roundup(length, ARCH_DMA_MINALIGN));
1002 static int mtk_eth_free_pkt(struct udevice *dev, uchar *packet, int length)
1004 struct mtk_eth_priv *priv = dev_get_priv(dev);
1005 u32 idx = priv->rx_dma_owner_idx0;
1007 priv->rx_ring_noc[idx].rxd_info2.DDONE = 0;
1008 priv->rx_ring_noc[idx].rxd_info2.LS0 = 0;
1009 priv->rx_ring_noc[idx].rxd_info2.PLEN0 = PKTSIZE_ALIGN;
1011 mtk_pdma_write(priv, RX_CRX_IDX_REG(0), idx);
1012 priv->rx_dma_owner_idx0 = (priv->rx_dma_owner_idx0 + 1) % NUM_RX_DESC;
1017 static int mtk_eth_probe(struct udevice *dev)
1019 struct eth_pdata *pdata = dev_get_platdata(dev);
1020 struct mtk_eth_priv *priv = dev_get_priv(dev);
1021 u32 iobase = pdata->iobase;
1024 /* Frame Engine Register Base */
1025 priv->fe_base = (void *)iobase;
1027 /* GMAC Register Base */
1028 priv->gmac_base = (void *)(iobase + GMAC_BASE);
1031 ret = mtk_mdio_register(dev);
1035 /* Prepare for tx/rx rings */
1036 priv->tx_ring_noc = (struct pdma_txdesc *)
1037 noncached_alloc(sizeof(struct pdma_txdesc) * NUM_TX_DESC,
1039 priv->rx_ring_noc = (struct pdma_rxdesc *)
1040 noncached_alloc(sizeof(struct pdma_rxdesc) * NUM_RX_DESC,
1046 /* Probe phy if switch is not specified */
1047 if (priv->sw == SW_NONE)
1048 return mtk_phy_probe(dev);
1050 /* Initialize switch */
1051 return priv->switch_init(priv);
1054 static int mtk_eth_remove(struct udevice *dev)
1056 struct mtk_eth_priv *priv = dev_get_priv(dev);
1058 /* MDIO unregister */
1059 mdio_unregister(priv->mdio_bus);
1060 mdio_free(priv->mdio_bus);
1062 /* Stop possibly started DMA */
1068 static int mtk_eth_ofdata_to_platdata(struct udevice *dev)
1070 struct eth_pdata *pdata = dev_get_platdata(dev);
1071 struct mtk_eth_priv *priv = dev_get_priv(dev);
1072 struct ofnode_phandle_args args;
1073 struct regmap *regmap;
1078 priv->soc = dev_get_driver_data(dev);
1080 pdata->iobase = devfdt_get_addr(dev);
1082 /* get corresponding ethsys phandle */
1083 ret = dev_read_phandle_with_args(dev, "mediatek,ethsys", NULL, 0, 0,
1088 regmap = syscon_node_to_regmap(args.node);
1090 return PTR_ERR(regmap);
1092 priv->ethsys_base = regmap_get_range(regmap, 0);
1093 if (!priv->ethsys_base) {
1094 dev_err(dev, "Unable to find ethsys\n");
1098 /* Reset controllers */
1099 ret = reset_get_by_name(dev, "fe", &priv->rst_fe);
1101 printf("error: Unable to get reset ctrl for frame engine\n");
1105 priv->gmac_id = dev_read_u32_default(dev, "mediatek,gmac-id", 0);
1107 /* Interface mode is required */
1108 str = dev_read_string(dev, "phy-mode");
1110 pdata->phy_interface = phy_get_interface_by_name(str);
1111 priv->phy_interface = pdata->phy_interface;
1113 printf("error: phy-mode is not set\n");
1117 /* Force mode or autoneg */
1118 subnode = ofnode_find_subnode(dev_ofnode(dev), "fixed-link");
1119 if (ofnode_valid(subnode)) {
1120 priv->force_mode = 1;
1121 priv->speed = ofnode_read_u32_default(subnode, "speed", 0);
1122 priv->duplex = ofnode_read_bool(subnode, "full-duplex");
1124 if (priv->speed != SPEED_10 && priv->speed != SPEED_100 &&
1125 priv->speed != SPEED_1000) {
1126 printf("error: no valid speed set in fixed-link\n");
1131 if (priv->phy_interface == PHY_INTERFACE_MODE_SGMII) {
1132 /* get corresponding sgmii phandle */
1133 ret = dev_read_phandle_with_args(dev, "mediatek,sgmiisys",
1138 regmap = syscon_node_to_regmap(args.node);
1141 return PTR_ERR(regmap);
1143 priv->sgmii_base = regmap_get_range(regmap, 0);
1145 if (!priv->sgmii_base) {
1146 dev_err(dev, "Unable to find sgmii\n");
1151 /* check for switch first, otherwise phy will be used */
1153 priv->switch_init = NULL;
1154 str = dev_read_string(dev, "mediatek,switch");
1157 if (!strcmp(str, "mt7530")) {
1158 priv->sw = SW_MT7530;
1159 priv->switch_init = mt7530_setup;
1160 priv->mt7530_smi_addr = MT7530_DFL_SMI_ADDR;
1162 printf("error: unsupported switch\n");
1166 priv->mcm = dev_read_bool(dev, "mediatek,mcm");
1168 ret = reset_get_by_name(dev, "mcm", &priv->rst_mcm);
1170 printf("error: no reset ctrl for mcm\n");
1174 gpio_request_by_name(dev, "reset-gpios", 0,
1175 &priv->rst_gpio, GPIOD_IS_OUT);
1178 ret = dev_read_phandle_with_args(dev, "phy-handle", NULL, 0,
1181 printf("error: phy-handle is not specified\n");
1185 priv->phy_addr = ofnode_read_s32_default(args.node, "reg", -1);
1186 if (priv->phy_addr < 0) {
1187 printf("error: phy address is not specified\n");
1195 static const struct udevice_id mtk_eth_ids[] = {
1196 { .compatible = "mediatek,mt7629-eth", .data = SOC_MT7629 },
1197 { .compatible = "mediatek,mt7623-eth", .data = SOC_MT7623 },
1201 static const struct eth_ops mtk_eth_ops = {
1202 .start = mtk_eth_start,
1203 .stop = mtk_eth_stop,
1204 .send = mtk_eth_send,
1205 .recv = mtk_eth_recv,
1206 .free_pkt = mtk_eth_free_pkt,
1207 .write_hwaddr = mtk_eth_write_hwaddr,
1210 U_BOOT_DRIVER(mtk_eth) = {
1213 .of_match = mtk_eth_ids,
1214 .ofdata_to_platdata = mtk_eth_ofdata_to_platdata,
1215 .platdata_auto_alloc_size = sizeof(struct eth_pdata),
1216 .probe = mtk_eth_probe,
1217 .remove = mtk_eth_remove,
1218 .ops = &mtk_eth_ops,
1219 .priv_auto_alloc_size = sizeof(struct mtk_eth_priv),
1220 .flags = DM_FLAG_ALLOC_PRIV_DMA,