2 * Atheros AR71xx / AR9xxx GMAC driver
4 * Copyright (C) 2016 Marek Vasut <marex@denx.de>
6 * SPDX-License-Identifier: GPL-2.0+
14 #include <linux/compiler.h>
15 #include <linux/err.h>
16 #include <linux/mii.h>
20 #include <mach/ath79.h>
22 DECLARE_GLOBAL_DATA_PTR;
29 /* MAC Configuration 1 */
30 #define AG7XXX_ETH_CFG1 0x00
31 #define AG7XXX_ETH_CFG1_SOFT_RST BIT(31)
32 #define AG7XXX_ETH_CFG1_RX_RST BIT(19)
33 #define AG7XXX_ETH_CFG1_TX_RST BIT(18)
34 #define AG7XXX_ETH_CFG1_LOOPBACK BIT(8)
35 #define AG7XXX_ETH_CFG1_RX_EN BIT(2)
36 #define AG7XXX_ETH_CFG1_TX_EN BIT(0)
38 /* MAC Configuration 2 */
39 #define AG7XXX_ETH_CFG2 0x04
40 #define AG7XXX_ETH_CFG2_IF_1000 BIT(9)
41 #define AG7XXX_ETH_CFG2_IF_10_100 BIT(8)
42 #define AG7XXX_ETH_CFG2_IF_SPEED_MASK (3 << 8)
43 #define AG7XXX_ETH_CFG2_HUGE_FRAME_EN BIT(5)
44 #define AG7XXX_ETH_CFG2_LEN_CHECK BIT(4)
45 #define AG7XXX_ETH_CFG2_PAD_CRC_EN BIT(2)
46 #define AG7XXX_ETH_CFG2_FDX BIT(0)
48 /* MII Configuration */
49 #define AG7XXX_ETH_MII_MGMT_CFG 0x20
50 #define AG7XXX_ETH_MII_MGMT_CFG_RESET BIT(31)
53 #define AG7XXX_ETH_MII_MGMT_CMD 0x24
54 #define AG7XXX_ETH_MII_MGMT_CMD_READ 0x1
57 #define AG7XXX_ETH_MII_MGMT_ADDRESS 0x28
58 #define AG7XXX_ETH_MII_MGMT_ADDRESS_SHIFT 8
61 #define AG7XXX_ETH_MII_MGMT_CTRL 0x2c
64 #define AG7XXX_ETH_MII_MGMT_STATUS 0x30
67 #define AG7XXX_ETH_MII_MGMT_IND 0x34
68 #define AG7XXX_ETH_MII_MGMT_IND_INVALID BIT(2)
69 #define AG7XXX_ETH_MII_MGMT_IND_BUSY BIT(0)
71 /* STA Address 1 & 2 */
72 #define AG7XXX_ETH_ADDR1 0x40
73 #define AG7XXX_ETH_ADDR2 0x44
75 /* ETH Configuration 0 - 5 */
76 #define AG7XXX_ETH_FIFO_CFG_0 0x48
77 #define AG7XXX_ETH_FIFO_CFG_1 0x4c
78 #define AG7XXX_ETH_FIFO_CFG_2 0x50
79 #define AG7XXX_ETH_FIFO_CFG_3 0x54
80 #define AG7XXX_ETH_FIFO_CFG_4 0x58
81 #define AG7XXX_ETH_FIFO_CFG_5 0x5c
83 /* DMA Transfer Control for Queue 0 */
84 #define AG7XXX_ETH_DMA_TX_CTRL 0x180
85 #define AG7XXX_ETH_DMA_TX_CTRL_TXE BIT(0)
87 /* Descriptor Address for Queue 0 Tx */
88 #define AG7XXX_ETH_DMA_TX_DESC 0x184
91 #define AG7XXX_ETH_DMA_TX_STATUS 0x188
94 #define AG7XXX_ETH_DMA_RX_CTRL 0x18c
95 #define AG7XXX_ETH_DMA_RX_CTRL_RXE BIT(0)
97 /* Pointer to Rx Descriptor */
98 #define AG7XXX_ETH_DMA_RX_DESC 0x190
101 #define AG7XXX_ETH_DMA_RX_STATUS 0x194
103 /* Custom register at 0x18070000 */
104 #define AG7XXX_GMAC_ETH_CFG 0x00
105 #define AG7XXX_ETH_CFG_SW_PHY_ADDR_SWAP BIT(8)
106 #define AG7XXX_ETH_CFG_SW_PHY_SWAP BIT(7)
107 #define AG7XXX_ETH_CFG_SW_ONLY_MODE BIT(6)
108 #define AG7XXX_ETH_CFG_GE0_ERR_EN BIT(5)
109 #define AG7XXX_ETH_CFG_MII_GE0_SLAVE BIT(4)
110 #define AG7XXX_ETH_CFG_MII_GE0_MASTER BIT(3)
111 #define AG7XXX_ETH_CFG_GMII_GE0 BIT(2)
112 #define AG7XXX_ETH_CFG_MII_GE0 BIT(1)
113 #define AG7XXX_ETH_CFG_RGMII_GE0 BIT(0)
115 #define CONFIG_TX_DESCR_NUM 8
116 #define CONFIG_RX_DESCR_NUM 8
117 #define CONFIG_ETH_BUFSIZE 2048
118 #define TX_TOTAL_BUFSIZE (CONFIG_ETH_BUFSIZE * CONFIG_TX_DESCR_NUM)
119 #define RX_TOTAL_BUFSIZE (CONFIG_ETH_BUFSIZE * CONFIG_RX_DESCR_NUM)
121 /* DMA descriptor. */
122 struct ag7xxx_dma_desc {
124 #define AG7XXX_DMADESC_IS_EMPTY BIT(31)
125 #define AG7XXX_DMADESC_FTPP_OVERRIDE_OFFSET 16
126 #define AG7XXX_DMADESC_PKT_SIZE_OFFSET 0
127 #define AG7XXX_DMADESC_PKT_SIZE_MASK 0xfff
133 struct ar7xxx_eth_priv {
134 struct ag7xxx_dma_desc tx_mac_descrtable[CONFIG_TX_DESCR_NUM];
135 struct ag7xxx_dma_desc rx_mac_descrtable[CONFIG_RX_DESCR_NUM];
136 char txbuffs[TX_TOTAL_BUFSIZE] __aligned(ARCH_DMA_MINALIGN);
137 char rxbuffs[RX_TOTAL_BUFSIZE] __aligned(ARCH_DMA_MINALIGN);
140 void __iomem *phyregs;
142 struct eth_device *dev;
143 struct phy_device *phydev;
149 enum ag7xxx_model model;
153 * Switch and MDIO access
155 static int ag7xxx_switch_read(struct mii_dev *bus, int addr, int reg, u16 *val)
157 struct ar7xxx_eth_priv *priv = bus->priv;
158 void __iomem *regs = priv->phyregs;
161 writel(0x0, regs + AG7XXX_ETH_MII_MGMT_CMD);
162 writel((addr << AG7XXX_ETH_MII_MGMT_ADDRESS_SHIFT) | reg,
163 regs + AG7XXX_ETH_MII_MGMT_ADDRESS);
164 writel(AG7XXX_ETH_MII_MGMT_CMD_READ,
165 regs + AG7XXX_ETH_MII_MGMT_CMD);
167 ret = wait_for_bit("ag7xxx", regs + AG7XXX_ETH_MII_MGMT_IND,
168 AG7XXX_ETH_MII_MGMT_IND_BUSY, 0, 1000, 0);
172 *val = readl(regs + AG7XXX_ETH_MII_MGMT_STATUS) & 0xffff;
173 writel(0x0, regs + AG7XXX_ETH_MII_MGMT_CMD);
178 static int ag7xxx_switch_write(struct mii_dev *bus, int addr, int reg, u16 val)
180 struct ar7xxx_eth_priv *priv = bus->priv;
181 void __iomem *regs = priv->phyregs;
184 writel((addr << AG7XXX_ETH_MII_MGMT_ADDRESS_SHIFT) | reg,
185 regs + AG7XXX_ETH_MII_MGMT_ADDRESS);
186 writel(val, regs + AG7XXX_ETH_MII_MGMT_CTRL);
188 ret = wait_for_bit("ag7xxx", regs + AG7XXX_ETH_MII_MGMT_IND,
189 AG7XXX_ETH_MII_MGMT_IND_BUSY, 0, 1000, 0);
194 static int ag7xxx_switch_reg_read(struct mii_dev *bus, int reg, u32 *val)
196 struct ar7xxx_eth_priv *priv = bus->priv;
204 if (priv->model == AG7XXX_MODEL_AG933X) {
207 } else if (priv->model == AG7XXX_MODEL_AG934X) {
213 ret = ag7xxx_switch_write(bus, phy_addr, reg_addr, reg >> 9);
217 phy_temp = ((reg >> 6) & 0x7) | 0x10;
218 reg_temp = (reg >> 1) & 0x1e;
221 ret = ag7xxx_switch_read(bus, phy_temp, reg_temp | 0, &rv);
226 ret = ag7xxx_switch_read(bus, phy_temp, reg_temp | 1, &rv);
234 static int ag7xxx_switch_reg_write(struct mii_dev *bus, int reg, u32 val)
236 struct ar7xxx_eth_priv *priv = bus->priv;
243 if (priv->model == AG7XXX_MODEL_AG933X) {
246 } else if (priv->model == AG7XXX_MODEL_AG934X) {
252 ret = ag7xxx_switch_write(bus, phy_addr, reg_addr, reg >> 9);
256 phy_temp = ((reg >> 6) & 0x7) | 0x10;
257 reg_temp = (reg >> 1) & 0x1e;
260 * The switch on AR933x has some special register behavior, which
261 * expects particular write order of their nibbles:
262 * 0x40 ..... MSB first, LSB second
263 * 0x50 ..... MSB first, LSB second
264 * 0x98 ..... LSB first, MSB second
265 * others ... don't care
267 if ((priv->model == AG7XXX_MODEL_AG933X) && (reg == 0x98)) {
268 ret = ag7xxx_switch_write(bus, phy_temp, reg_temp | 0, val & 0xffff);
272 ret = ag7xxx_switch_write(bus, phy_temp, reg_temp | 1, val >> 16);
276 ret = ag7xxx_switch_write(bus, phy_temp, reg_temp | 1, val >> 16);
280 ret = ag7xxx_switch_write(bus, phy_temp, reg_temp | 0, val & 0xffff);
288 static u16 ag7xxx_mdio_rw(struct mii_dev *bus, int addr, int reg, u32 val)
292 /* Dummy read followed by PHY read/write command. */
293 ag7xxx_switch_reg_read(bus, 0x98, &data);
294 data = val | (reg << 16) | (addr << 21) | BIT(30) | BIT(31);
295 ag7xxx_switch_reg_write(bus, 0x98, data);
297 /* Wait for operation to finish */
299 ag7xxx_switch_reg_read(bus, 0x98, &data);
300 } while (data & BIT(31));
302 return data & 0xffff;
305 static int ag7xxx_mdio_read(struct mii_dev *bus, int addr, int devad, int reg)
307 return ag7xxx_mdio_rw(bus, addr, reg, BIT(27));
310 static int ag7xxx_mdio_write(struct mii_dev *bus, int addr, int devad, int reg,
313 ag7xxx_mdio_rw(bus, addr, reg, val);
320 static void ag7xxx_dma_clean_tx(struct udevice *dev)
322 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
323 struct ag7xxx_dma_desc *curr, *next;
327 for (i = 0; i < CONFIG_TX_DESCR_NUM; i++) {
328 curr = &priv->tx_mac_descrtable[i];
329 next = &priv->tx_mac_descrtable[(i + 1) % CONFIG_TX_DESCR_NUM];
331 curr->data_addr = virt_to_phys(&priv->txbuffs[i * CONFIG_ETH_BUFSIZE]);
332 curr->config = AG7XXX_DMADESC_IS_EMPTY;
333 curr->next_desc = virt_to_phys(next);
336 priv->tx_currdescnum = 0;
338 /* Cache: Flush descriptors, don't care about buffers. */
339 start = (u32)(&priv->tx_mac_descrtable[0]);
340 end = start + sizeof(priv->tx_mac_descrtable);
341 flush_dcache_range(start, end);
344 static void ag7xxx_dma_clean_rx(struct udevice *dev)
346 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
347 struct ag7xxx_dma_desc *curr, *next;
351 for (i = 0; i < CONFIG_RX_DESCR_NUM; i++) {
352 curr = &priv->rx_mac_descrtable[i];
353 next = &priv->rx_mac_descrtable[(i + 1) % CONFIG_RX_DESCR_NUM];
355 curr->data_addr = virt_to_phys(&priv->rxbuffs[i * CONFIG_ETH_BUFSIZE]);
356 curr->config = AG7XXX_DMADESC_IS_EMPTY;
357 curr->next_desc = virt_to_phys(next);
360 priv->rx_currdescnum = 0;
362 /* Cache: Flush+Invalidate descriptors, Invalidate buffers. */
363 start = (u32)(&priv->rx_mac_descrtable[0]);
364 end = start + sizeof(priv->rx_mac_descrtable);
365 flush_dcache_range(start, end);
366 invalidate_dcache_range(start, end);
368 start = (u32)&priv->rxbuffs;
369 end = start + sizeof(priv->rxbuffs);
370 invalidate_dcache_range(start, end);
376 static int ag7xxx_eth_send(struct udevice *dev, void *packet, int length)
378 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
379 struct ag7xxx_dma_desc *curr;
382 curr = &priv->tx_mac_descrtable[priv->tx_currdescnum];
384 /* Cache: Invalidate descriptor. */
386 end = start + sizeof(*curr);
387 invalidate_dcache_range(start, end);
389 if (!(curr->config & AG7XXX_DMADESC_IS_EMPTY)) {
390 printf("ag7xxx: Out of TX DMA descriptors!\n");
394 /* Copy the packet into the data buffer. */
395 memcpy(phys_to_virt(curr->data_addr), packet, length);
396 curr->config = length & AG7XXX_DMADESC_PKT_SIZE_MASK;
398 /* Cache: Flush descriptor, Flush buffer. */
400 end = start + sizeof(*curr);
401 flush_dcache_range(start, end);
402 start = (u32)phys_to_virt(curr->data_addr);
403 end = start + length;
404 flush_dcache_range(start, end);
406 /* Load the DMA descriptor and start TX DMA. */
407 writel(AG7XXX_ETH_DMA_TX_CTRL_TXE,
408 priv->regs + AG7XXX_ETH_DMA_TX_CTRL);
410 /* Switch to next TX descriptor. */
411 priv->tx_currdescnum = (priv->tx_currdescnum + 1) % CONFIG_TX_DESCR_NUM;
416 static int ag7xxx_eth_recv(struct udevice *dev, int flags, uchar **packetp)
418 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
419 struct ag7xxx_dma_desc *curr;
420 u32 start, end, length;
422 curr = &priv->rx_mac_descrtable[priv->rx_currdescnum];
424 /* Cache: Invalidate descriptor. */
426 end = start + sizeof(*curr);
427 invalidate_dcache_range(start, end);
429 /* No packets received. */
430 if (curr->config & AG7XXX_DMADESC_IS_EMPTY)
433 length = curr->config & AG7XXX_DMADESC_PKT_SIZE_MASK;
435 /* Cache: Invalidate buffer. */
436 start = (u32)phys_to_virt(curr->data_addr);
437 end = start + length;
438 invalidate_dcache_range(start, end);
440 /* Receive one packet and return length. */
441 *packetp = phys_to_virt(curr->data_addr);
445 static int ag7xxx_eth_free_pkt(struct udevice *dev, uchar *packet,
448 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
449 struct ag7xxx_dma_desc *curr;
452 curr = &priv->rx_mac_descrtable[priv->rx_currdescnum];
454 curr->config = AG7XXX_DMADESC_IS_EMPTY;
456 /* Cache: Flush descriptor. */
458 end = start + sizeof(*curr);
459 flush_dcache_range(start, end);
461 /* Switch to next RX descriptor. */
462 priv->rx_currdescnum = (priv->rx_currdescnum + 1) % CONFIG_RX_DESCR_NUM;
467 static int ag7xxx_eth_start(struct udevice *dev)
469 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
471 /* FIXME: Check if link up */
473 /* Clear the DMA rings. */
474 ag7xxx_dma_clean_tx(dev);
475 ag7xxx_dma_clean_rx(dev);
477 /* Load DMA descriptors and start the RX DMA. */
478 writel(virt_to_phys(&priv->tx_mac_descrtable[priv->tx_currdescnum]),
479 priv->regs + AG7XXX_ETH_DMA_TX_DESC);
480 writel(virt_to_phys(&priv->rx_mac_descrtable[priv->rx_currdescnum]),
481 priv->regs + AG7XXX_ETH_DMA_RX_DESC);
482 writel(AG7XXX_ETH_DMA_RX_CTRL_RXE,
483 priv->regs + AG7XXX_ETH_DMA_RX_CTRL);
488 static void ag7xxx_eth_stop(struct udevice *dev)
490 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
492 /* Stop the TX DMA. */
493 writel(0, priv->regs + AG7XXX_ETH_DMA_TX_CTRL);
494 wait_for_bit("ag7xxx", priv->regs + AG7XXX_ETH_DMA_TX_CTRL, ~0, 0,
497 /* Stop the RX DMA. */
498 writel(0, priv->regs + AG7XXX_ETH_DMA_RX_CTRL);
499 wait_for_bit("ag7xxx", priv->regs + AG7XXX_ETH_DMA_RX_CTRL, ~0, 0,
506 static int ag7xxx_eth_write_hwaddr(struct udevice *dev)
508 struct eth_pdata *pdata = dev_get_platdata(dev);
509 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
510 unsigned char *mac = pdata->enetaddr;
511 u32 macid_lo, macid_hi;
513 macid_hi = mac[3] | (mac[2] << 8) | (mac[1] << 16) | (mac[0] << 24);
514 macid_lo = (mac[5] << 16) | (mac[4] << 24);
516 writel(macid_lo, priv->regs + AG7XXX_ETH_ADDR1);
517 writel(macid_hi, priv->regs + AG7XXX_ETH_ADDR2);
522 static void ag7xxx_hw_setup(struct udevice *dev)
524 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
527 setbits_be32(priv->regs + AG7XXX_ETH_CFG1,
528 AG7XXX_ETH_CFG1_RX_RST | AG7XXX_ETH_CFG1_TX_RST |
529 AG7XXX_ETH_CFG1_SOFT_RST);
533 writel(AG7XXX_ETH_CFG1_RX_EN | AG7XXX_ETH_CFG1_TX_EN,
534 priv->regs + AG7XXX_ETH_CFG1);
536 if (priv->interface == PHY_INTERFACE_MODE_RMII)
537 speed = AG7XXX_ETH_CFG2_IF_10_100;
539 speed = AG7XXX_ETH_CFG2_IF_1000;
541 clrsetbits_be32(priv->regs + AG7XXX_ETH_CFG2,
542 AG7XXX_ETH_CFG2_IF_SPEED_MASK,
543 speed | AG7XXX_ETH_CFG2_PAD_CRC_EN |
544 AG7XXX_ETH_CFG2_LEN_CHECK);
546 writel(0xfff0000, priv->regs + AG7XXX_ETH_FIFO_CFG_1);
547 writel(0x1fff, priv->regs + AG7XXX_ETH_FIFO_CFG_2);
549 writel(0x1f00, priv->regs + AG7XXX_ETH_FIFO_CFG_0);
550 setbits_be32(priv->regs + AG7XXX_ETH_FIFO_CFG_4, 0x3ffff);
551 writel(0x10ffff, priv->regs + AG7XXX_ETH_FIFO_CFG_1);
552 writel(0xaaa0555, priv->regs + AG7XXX_ETH_FIFO_CFG_2);
553 writel(0x7eccf, priv->regs + AG7XXX_ETH_FIFO_CFG_5);
554 writel(0x1f00140, priv->regs + AG7XXX_ETH_FIFO_CFG_3);
557 static int ag7xxx_mii_get_div(void)
559 ulong freq = get_bus_freq(0);
561 switch (freq / 1000000) {
562 case 150: return 0x7;
563 case 175: return 0x5;
564 case 200: return 0x4;
565 case 210: return 0x9;
566 case 220: return 0x9;
571 static int ag7xxx_mii_setup(struct udevice *dev)
573 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
574 int i, ret, div = ag7xxx_mii_get_div();
577 if (priv->model == AG7XXX_MODEL_AG933X) {
578 /* Unit 0 is PHY-less on AR9331, see datasheet Figure 2-3 */
579 if (priv->interface == PHY_INTERFACE_MODE_RMII)
583 if (priv->model == AG7XXX_MODEL_AG934X) {
584 writel(AG7XXX_ETH_MII_MGMT_CFG_RESET | 0x4,
585 priv->regs + AG7XXX_ETH_MII_MGMT_CFG);
586 writel(0x4, priv->regs + AG7XXX_ETH_MII_MGMT_CFG);
590 for (i = 0; i < 10; i++) {
591 writel(AG7XXX_ETH_MII_MGMT_CFG_RESET | div,
592 priv->regs + AG7XXX_ETH_MII_MGMT_CFG);
593 writel(div, priv->regs + AG7XXX_ETH_MII_MGMT_CFG);
595 /* Check the switch */
596 ret = ag7xxx_switch_reg_read(priv->bus, 0x10c, ®);
600 if (reg != 0x18007fff)
609 static int ag933x_phy_setup_wan(struct udevice *dev)
611 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
613 /* Configure switch port 4 (GMAC0) */
614 return ag7xxx_mdio_write(priv->bus, 4, 0, MII_BMCR, 0x9000);
617 static int ag933x_phy_setup_lan(struct udevice *dev)
619 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
623 /* Reset the switch */
624 ret = ag7xxx_switch_reg_read(priv->bus, 0, ®);
628 ret = ag7xxx_switch_reg_write(priv->bus, 0, reg);
633 ret = ag7xxx_switch_reg_read(priv->bus, 0, ®);
636 } while (reg & BIT(31));
638 /* Configure switch ports 0...3 (GMAC1) */
639 for (i = 0; i < 4; i++) {
640 ret = ag7xxx_mdio_write(priv->bus, 0x4, 0, MII_BMCR, 0x9000);
645 /* Enable CPU port */
646 ret = ag7xxx_switch_reg_write(priv->bus, 0x78, BIT(8));
650 for (i = 0; i < 4; i++) {
651 ret = ag7xxx_switch_reg_write(priv->bus, i * 0x100, BIT(9));
657 ret = ag7xxx_switch_reg_write(priv->bus, 0x38, 0xc000050e);
661 /* Disable Atheros header */
662 ret = ag7xxx_switch_reg_write(priv->bus, 0x104, 0x4004);
666 /* Tag priority mapping */
667 ret = ag7xxx_switch_reg_write(priv->bus, 0x70, 0xfa50);
671 /* Enable ARP packets to the CPU */
672 ret = ag7xxx_switch_reg_read(priv->bus, 0x5c, ®);
676 ret = ag7xxx_switch_reg_write(priv->bus, 0x5c, reg);
683 static int ag933x_phy_setup_reset_set(struct udevice *dev, int port)
685 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
688 ret = ag7xxx_mdio_write(priv->bus, port, 0, MII_ADVERTISE,
689 ADVERTISE_ALL | ADVERTISE_PAUSE_CAP |
690 ADVERTISE_PAUSE_ASYM);
694 if (priv->model == AG7XXX_MODEL_AG934X) {
695 ret = ag7xxx_mdio_write(priv->bus, port, 0, MII_CTRL1000,
701 return ag7xxx_mdio_write(priv->bus, port, 0, MII_BMCR,
702 BMCR_ANENABLE | BMCR_RESET);
705 static int ag933x_phy_setup_reset_fin(struct udevice *dev, int port)
707 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
711 ret = ag7xxx_mdio_read(priv->bus, port, 0, MII_BMCR);
715 } while (ret & BMCR_RESET);
720 static int ag933x_phy_setup_common(struct udevice *dev)
722 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
725 if (priv->model == AG7XXX_MODEL_AG933X)
727 else if (priv->model == AG7XXX_MODEL_AG934X)
732 if (priv->interface == PHY_INTERFACE_MODE_RMII) {
733 ret = ag933x_phy_setup_reset_set(dev, phymax);
737 ret = ag933x_phy_setup_reset_fin(dev, phymax);
741 /* Read out link status */
742 ret = ag7xxx_mdio_read(priv->bus, phymax, 0, MII_MIPSCR);
750 for (i = 0; i < phymax; i++) {
751 ret = ag933x_phy_setup_reset_set(dev, i);
756 for (i = 0; i < phymax; i++) {
757 ret = ag933x_phy_setup_reset_fin(dev, i);
762 for (i = 0; i < phymax; i++) {
763 /* Read out link status */
764 ret = ag7xxx_mdio_read(priv->bus, i, 0, MII_MIPSCR);
772 static int ag934x_phy_setup(struct udevice *dev)
774 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
778 ret = ag7xxx_switch_reg_write(priv->bus, 0x624, 0x7f7f7f7f);
781 ret = ag7xxx_switch_reg_write(priv->bus, 0x10, 0x40000000);
784 ret = ag7xxx_switch_reg_write(priv->bus, 0x4, 0x07600000);
787 ret = ag7xxx_switch_reg_write(priv->bus, 0xc, 0x01000000);
790 ret = ag7xxx_switch_reg_write(priv->bus, 0x7c, 0x0000007e);
794 /* AR8327/AR8328 v1.0 fixup */
795 ret = ag7xxx_switch_reg_read(priv->bus, 0, ®);
798 if ((reg & 0xffff) == 0x1201) {
799 for (i = 0; i < 5; i++) {
800 ret = ag7xxx_mdio_write(priv->bus, i, 0, 0x1d, 0x0);
803 ret = ag7xxx_mdio_write(priv->bus, i, 0, 0x1e, 0x02ea);
806 ret = ag7xxx_mdio_write(priv->bus, i, 0, 0x1d, 0x3d);
809 ret = ag7xxx_mdio_write(priv->bus, i, 0, 0x1e, 0x68a0);
815 ret = ag7xxx_switch_reg_read(priv->bus, 0x66c, ®);
819 ret = ag7xxx_switch_reg_write(priv->bus, 0x66c, reg);
826 static int ag7xxx_mac_probe(struct udevice *dev)
828 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
831 ag7xxx_hw_setup(dev);
832 ret = ag7xxx_mii_setup(dev);
836 ag7xxx_eth_write_hwaddr(dev);
838 if (priv->model == AG7XXX_MODEL_AG933X) {
839 if (priv->interface == PHY_INTERFACE_MODE_RMII)
840 ret = ag933x_phy_setup_wan(dev);
842 ret = ag933x_phy_setup_lan(dev);
843 } else if (priv->model == AG7XXX_MODEL_AG934X) {
844 ret = ag934x_phy_setup(dev);
852 return ag933x_phy_setup_common(dev);
855 static int ag7xxx_mdio_probe(struct udevice *dev)
857 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
858 struct mii_dev *bus = mdio_alloc();
863 bus->read = ag7xxx_mdio_read;
864 bus->write = ag7xxx_mdio_write;
865 snprintf(bus->name, sizeof(bus->name), dev->name);
867 bus->priv = (void *)priv;
869 return mdio_register(bus);
872 static int ag7xxx_get_phy_iface_offset(struct udevice *dev)
876 offset = fdtdec_lookup_phandle(gd->fdt_blob, dev_of_offset(dev), "phy");
878 debug("%s: PHY OF node not found (ret=%i)\n", __func__, offset);
882 offset = fdt_parent_offset(gd->fdt_blob, offset);
884 debug("%s: PHY OF node parent MDIO bus not found (ret=%i)\n",
889 offset = fdt_parent_offset(gd->fdt_blob, offset);
891 debug("%s: PHY MDIO OF node parent MAC not found (ret=%i)\n",
899 static int ag7xxx_eth_probe(struct udevice *dev)
901 struct eth_pdata *pdata = dev_get_platdata(dev);
902 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
903 void __iomem *iobase, *phyiobase;
906 /* Decoding of convoluted PHY wiring on Atheros MIPS. */
907 ret = ag7xxx_get_phy_iface_offset(dev);
910 phyreg = fdtdec_get_int(gd->fdt_blob, ret, "reg", -1);
912 iobase = map_physmem(pdata->iobase, 0x200, MAP_NOCACHE);
913 phyiobase = map_physmem(phyreg, 0x200, MAP_NOCACHE);
915 debug("%s, iobase=%p, phyiobase=%p, priv=%p\n",
916 __func__, iobase, phyiobase, priv);
918 priv->phyregs = phyiobase;
919 priv->interface = pdata->phy_interface;
920 priv->model = dev_get_driver_data(dev);
922 ret = ag7xxx_mdio_probe(dev);
926 priv->bus = miiphy_get_dev_by_name(dev->name);
928 ret = ag7xxx_mac_probe(dev);
929 debug("%s, ret=%d\n", __func__, ret);
934 static int ag7xxx_eth_remove(struct udevice *dev)
936 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
939 mdio_unregister(priv->bus);
940 mdio_free(priv->bus);
945 static const struct eth_ops ag7xxx_eth_ops = {
946 .start = ag7xxx_eth_start,
947 .send = ag7xxx_eth_send,
948 .recv = ag7xxx_eth_recv,
949 .free_pkt = ag7xxx_eth_free_pkt,
950 .stop = ag7xxx_eth_stop,
951 .write_hwaddr = ag7xxx_eth_write_hwaddr,
954 static int ag7xxx_eth_ofdata_to_platdata(struct udevice *dev)
956 struct eth_pdata *pdata = dev_get_platdata(dev);
957 const char *phy_mode;
960 pdata->iobase = devfdt_get_addr(dev);
961 pdata->phy_interface = -1;
963 /* Decoding of convoluted PHY wiring on Atheros MIPS. */
964 ret = ag7xxx_get_phy_iface_offset(dev);
968 phy_mode = fdt_getprop(gd->fdt_blob, ret, "phy-mode", NULL);
970 pdata->phy_interface = phy_get_interface_by_name(phy_mode);
971 if (pdata->phy_interface == -1) {
972 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
979 static const struct udevice_id ag7xxx_eth_ids[] = {
980 { .compatible = "qca,ag933x-mac", .data = AG7XXX_MODEL_AG933X },
981 { .compatible = "qca,ag934x-mac", .data = AG7XXX_MODEL_AG934X },
985 U_BOOT_DRIVER(eth_ag7xxx) = {
986 .name = "eth_ag7xxx",
988 .of_match = ag7xxx_eth_ids,
989 .ofdata_to_platdata = ag7xxx_eth_ofdata_to_platdata,
990 .probe = ag7xxx_eth_probe,
991 .remove = ag7xxx_eth_remove,
992 .ops = &ag7xxx_eth_ops,
993 .priv_auto_alloc_size = sizeof(struct ar7xxx_eth_priv),
994 .platdata_auto_alloc_size = sizeof(struct eth_pdata),
995 .flags = DM_FLAG_ALLOC_PRIV_DMA,