1 // SPDX-License-Identifier: GPL-2.0+
3 * Atheros AR71xx / AR9xxx GMAC driver
5 * Copyright (C) 2016 Marek Vasut <marex@denx.de>
6 * Copyright (C) 2019 Rosy Song <rosysong@rosinson.com>
10 #include <clock_legacy.h>
18 #include <asm/cache.h>
19 #include <linux/compiler.h>
20 #include <linux/delay.h>
21 #include <linux/err.h>
22 #include <linux/mii.h>
26 #include <mach/ath79.h>
28 DECLARE_GLOBAL_DATA_PTR;
37 /* MAC Configuration 1 */
38 #define AG7XXX_ETH_CFG1 0x00
39 #define AG7XXX_ETH_CFG1_SOFT_RST BIT(31)
40 #define AG7XXX_ETH_CFG1_RX_RST BIT(19)
41 #define AG7XXX_ETH_CFG1_TX_RST BIT(18)
42 #define AG7XXX_ETH_CFG1_LOOPBACK BIT(8)
43 #define AG7XXX_ETH_CFG1_RX_EN BIT(2)
44 #define AG7XXX_ETH_CFG1_TX_EN BIT(0)
46 /* MAC Configuration 2 */
47 #define AG7XXX_ETH_CFG2 0x04
48 #define AG7XXX_ETH_CFG2_IF_1000 BIT(9)
49 #define AG7XXX_ETH_CFG2_IF_10_100 BIT(8)
50 #define AG7XXX_ETH_CFG2_IF_SPEED_MASK (3 << 8)
51 #define AG7XXX_ETH_CFG2_HUGE_FRAME_EN BIT(5)
52 #define AG7XXX_ETH_CFG2_LEN_CHECK BIT(4)
53 #define AG7XXX_ETH_CFG2_PAD_CRC_EN BIT(2)
54 #define AG7XXX_ETH_CFG2_FDX BIT(0)
56 /* MII Configuration */
57 #define AG7XXX_ETH_MII_MGMT_CFG 0x20
58 #define AG7XXX_ETH_MII_MGMT_CFG_RESET BIT(31)
61 #define AG7XXX_ETH_MII_MGMT_CMD 0x24
62 #define AG7XXX_ETH_MII_MGMT_CMD_READ 0x1
65 #define AG7XXX_ETH_MII_MGMT_ADDRESS 0x28
66 #define AG7XXX_ETH_MII_MGMT_ADDRESS_SHIFT 8
69 #define AG7XXX_ETH_MII_MGMT_CTRL 0x2c
72 #define AG7XXX_ETH_MII_MGMT_STATUS 0x30
75 #define AG7XXX_ETH_MII_MGMT_IND 0x34
76 #define AG7XXX_ETH_MII_MGMT_IND_INVALID BIT(2)
77 #define AG7XXX_ETH_MII_MGMT_IND_BUSY BIT(0)
79 /* STA Address 1 & 2 */
80 #define AG7XXX_ETH_ADDR1 0x40
81 #define AG7XXX_ETH_ADDR2 0x44
83 /* ETH Configuration 0 - 5 */
84 #define AG7XXX_ETH_FIFO_CFG_0 0x48
85 #define AG7XXX_ETH_FIFO_CFG_1 0x4c
86 #define AG7XXX_ETH_FIFO_CFG_2 0x50
87 #define AG7XXX_ETH_FIFO_CFG_3 0x54
88 #define AG7XXX_ETH_FIFO_CFG_4 0x58
89 #define AG7XXX_ETH_FIFO_CFG_5 0x5c
91 /* DMA Transfer Control for Queue 0 */
92 #define AG7XXX_ETH_DMA_TX_CTRL 0x180
93 #define AG7XXX_ETH_DMA_TX_CTRL_TXE BIT(0)
95 /* Descriptor Address for Queue 0 Tx */
96 #define AG7XXX_ETH_DMA_TX_DESC 0x184
99 #define AG7XXX_ETH_DMA_TX_STATUS 0x188
102 #define AG7XXX_ETH_DMA_RX_CTRL 0x18c
103 #define AG7XXX_ETH_DMA_RX_CTRL_RXE BIT(0)
105 /* Pointer to Rx Descriptor */
106 #define AG7XXX_ETH_DMA_RX_DESC 0x190
109 #define AG7XXX_ETH_DMA_RX_STATUS 0x194
111 /* Custom register at 0x1805002C */
112 #define AG7XXX_ETH_XMII 0x2C
113 #define AG7XXX_ETH_XMII_TX_INVERT BIT(31)
114 #define AG7XXX_ETH_XMII_RX_DELAY_LSB 28
115 #define AG7XXX_ETH_XMII_RX_DELAY_MASK 0x30000000
116 #define AG7XXX_ETH_XMII_RX_DELAY_SET(x) \
117 (((x) << AG7XXX_ETH_XMII_RX_DELAY_LSB) & AG7XXX_ETH_XMII_RX_DELAY_MASK)
118 #define AG7XXX_ETH_XMII_TX_DELAY_LSB 26
119 #define AG7XXX_ETH_XMII_TX_DELAY_MASK 0x0c000000
120 #define AG7XXX_ETH_XMII_TX_DELAY_SET(x) \
121 (((x) << AG7XXX_ETH_XMII_TX_DELAY_LSB) & AG7XXX_ETH_XMII_TX_DELAY_MASK)
122 #define AG7XXX_ETH_XMII_GIGE BIT(25)
124 /* Custom register at 0x18070000 */
125 #define AG7XXX_GMAC_ETH_CFG 0x00
126 #define AG7XXX_ETH_CFG_RXDV_DELAY_LSB 16
127 #define AG7XXX_ETH_CFG_RXDV_DELAY_MASK 0x00030000
128 #define AG7XXX_ETH_CFG_RXDV_DELAY_SET(x) \
129 (((x) << AG7XXX_ETH_CFG_RXDV_DELAY_LSB) & AG7XXX_ETH_CFG_RXDV_DELAY_MASK)
130 #define AG7XXX_ETH_CFG_RXD_DELAY_LSB 14
131 #define AG7XXX_ETH_CFG_RXD_DELAY_MASK 0x0000c000
132 #define AG7XXX_ETH_CFG_RXD_DELAY_SET(x) \
133 (((x) << AG7XXX_ETH_CFG_RXD_DELAY_LSB) & AG7XXX_ETH_CFG_RXD_DELAY_MASK)
134 #define AG7XXX_ETH_CFG_SW_PHY_ADDR_SWAP BIT(8)
135 #define AG7XXX_ETH_CFG_SW_PHY_SWAP BIT(7)
136 #define AG7XXX_ETH_CFG_SW_ONLY_MODE BIT(6)
137 #define AG7XXX_ETH_CFG_GE0_ERR_EN BIT(5)
138 #define AG7XXX_ETH_CFG_MII_GE0_SLAVE BIT(4)
139 #define AG7XXX_ETH_CFG_MII_GE0_MASTER BIT(3)
140 #define AG7XXX_ETH_CFG_GMII_GE0 BIT(2)
141 #define AG7XXX_ETH_CFG_MII_GE0 BIT(1)
142 #define AG7XXX_ETH_CFG_RGMII_GE0 BIT(0)
144 #define CONFIG_TX_DESCR_NUM 8
145 #define CONFIG_RX_DESCR_NUM 8
146 #define CONFIG_ETH_BUFSIZE 2048
147 #define TX_TOTAL_BUFSIZE (CONFIG_ETH_BUFSIZE * CONFIG_TX_DESCR_NUM)
148 #define RX_TOTAL_BUFSIZE (CONFIG_ETH_BUFSIZE * CONFIG_RX_DESCR_NUM)
150 /* DMA descriptor. */
151 struct ag7xxx_dma_desc {
153 #define AG7XXX_DMADESC_IS_EMPTY BIT(31)
154 #define AG7XXX_DMADESC_FTPP_OVERRIDE_OFFSET 16
155 #define AG7XXX_DMADESC_PKT_SIZE_OFFSET 0
156 #define AG7XXX_DMADESC_PKT_SIZE_MASK 0xfff
162 struct ar7xxx_eth_priv {
163 struct ag7xxx_dma_desc tx_mac_descrtable[CONFIG_TX_DESCR_NUM];
164 struct ag7xxx_dma_desc rx_mac_descrtable[CONFIG_RX_DESCR_NUM];
165 char txbuffs[TX_TOTAL_BUFSIZE] __aligned(ARCH_DMA_MINALIGN);
166 char rxbuffs[RX_TOTAL_BUFSIZE] __aligned(ARCH_DMA_MINALIGN);
169 void __iomem *phyregs;
171 struct eth_device *dev;
172 struct phy_device *phydev;
178 enum ag7xxx_model model;
182 * Switch and MDIO access
184 static int ag7xxx_switch_read(struct mii_dev *bus, int addr, int reg, u16 *val)
186 struct ar7xxx_eth_priv *priv = bus->priv;
187 void __iomem *regs = priv->phyregs;
190 writel(0x0, regs + AG7XXX_ETH_MII_MGMT_CMD);
191 writel((addr << AG7XXX_ETH_MII_MGMT_ADDRESS_SHIFT) | reg,
192 regs + AG7XXX_ETH_MII_MGMT_ADDRESS);
193 writel(AG7XXX_ETH_MII_MGMT_CMD_READ,
194 regs + AG7XXX_ETH_MII_MGMT_CMD);
196 ret = wait_for_bit_le32(regs + AG7XXX_ETH_MII_MGMT_IND,
197 AG7XXX_ETH_MII_MGMT_IND_BUSY, 0, 1000, 0);
201 *val = readl(regs + AG7XXX_ETH_MII_MGMT_STATUS) & 0xffff;
202 writel(0x0, regs + AG7XXX_ETH_MII_MGMT_CMD);
207 static int ag7xxx_switch_write(struct mii_dev *bus, int addr, int reg, u16 val)
209 struct ar7xxx_eth_priv *priv = bus->priv;
210 void __iomem *regs = priv->phyregs;
213 writel((addr << AG7XXX_ETH_MII_MGMT_ADDRESS_SHIFT) | reg,
214 regs + AG7XXX_ETH_MII_MGMT_ADDRESS);
215 writel(val, regs + AG7XXX_ETH_MII_MGMT_CTRL);
217 ret = wait_for_bit_le32(regs + AG7XXX_ETH_MII_MGMT_IND,
218 AG7XXX_ETH_MII_MGMT_IND_BUSY, 0, 1000, 0);
223 static int ag7xxx_switch_reg_read(struct mii_dev *bus, int reg, u32 *val)
225 struct ar7xxx_eth_priv *priv = bus->priv;
230 u32 reg_temp_w = (reg & 0xfffffffc) >> 1;
234 if (priv->model == AG7XXX_MODEL_AG933X ||
235 priv->model == AG7XXX_MODEL_AG953X) {
238 } else if (priv->model == AG7XXX_MODEL_AG934X ||
239 priv->model == AG7XXX_MODEL_AG956X) {
245 if (priv->model == AG7XXX_MODEL_AG956X)
246 ret = ag7xxx_switch_write(bus, phy_addr, reg_addr, (reg >> 9) & 0x1ff);
248 ret = ag7xxx_switch_write(bus, phy_addr, reg_addr, reg >> 9);
252 phy_temp = ((reg >> 6) & 0x7) | 0x10;
253 if (priv->model == AG7XXX_MODEL_AG956X)
254 reg_temp = reg_temp_w & 0x1f;
256 reg_temp = (reg >> 1) & 0x1e;
259 ret = ag7xxx_switch_read(bus, phy_temp, reg_temp | 0, &rv);
264 if (priv->model == AG7XXX_MODEL_AG956X) {
265 phy_temp = (((reg_temp_w + 1) >> 5) & 0x7) | 0x10;
266 reg_temp = (reg_temp_w + 1) & 0x1f;
267 ret = ag7xxx_switch_read(bus, phy_temp, reg_temp, &rv);
269 ret = ag7xxx_switch_read(bus, phy_temp, reg_temp | 1, &rv);
278 static int ag7xxx_switch_reg_write(struct mii_dev *bus, int reg, u32 val)
280 struct ar7xxx_eth_priv *priv = bus->priv;
285 u32 reg_temp_w = (reg & 0xfffffffc) >> 1;
288 if (priv->model == AG7XXX_MODEL_AG933X ||
289 priv->model == AG7XXX_MODEL_AG953X) {
292 } else if (priv->model == AG7XXX_MODEL_AG934X ||
293 priv->model == AG7XXX_MODEL_AG956X) {
299 if (priv->model == AG7XXX_MODEL_AG956X)
300 ret = ag7xxx_switch_write(bus, phy_addr, reg_addr, (reg >> 9) & 0x1ff);
302 ret = ag7xxx_switch_write(bus, phy_addr, reg_addr, reg >> 9);
306 if (priv->model == AG7XXX_MODEL_AG956X) {
307 reg_temp = (reg_temp_w + 1) & 0x1f;
308 phy_temp = (((reg_temp_w + 1) >> 5) & 0x7) | 0x10;
310 phy_temp = ((reg >> 6) & 0x7) | 0x10;
311 reg_temp = (reg >> 1) & 0x1e;
315 * The switch on AR933x has some special register behavior, which
316 * expects particular write order of their nibbles:
317 * 0x40 ..... MSB first, LSB second
318 * 0x50 ..... MSB first, LSB second
319 * 0x98 ..... LSB first, MSB second
320 * others ... don't care
322 if ((priv->model == AG7XXX_MODEL_AG933X) && (reg == 0x98)) {
323 ret = ag7xxx_switch_write(bus, phy_temp, reg_temp | 0, val & 0xffff);
327 ret = ag7xxx_switch_write(bus, phy_temp, reg_temp | 1, val >> 16);
331 if (priv->model == AG7XXX_MODEL_AG956X)
332 ret = ag7xxx_switch_write(bus, phy_temp, reg_temp, val >> 16);
334 ret = ag7xxx_switch_write(bus, phy_temp, reg_temp | 1, val >> 16);
338 if (priv->model == AG7XXX_MODEL_AG956X) {
339 phy_temp = ((reg_temp_w >> 5) & 0x7) | 0x10;
340 reg_temp = reg_temp_w & 0x1f;
343 ret = ag7xxx_switch_write(bus, phy_temp, reg_temp | 0, val & 0xffff);
351 static int ag7xxx_mdio_rw(struct mii_dev *bus, int addr, int reg, u32 val)
356 /* No idea if this is long enough or too long */
357 int timeout_ms = 1000;
359 /* Dummy read followed by PHY read/write command. */
360 ret = ag7xxx_switch_reg_read(bus, 0x98, &data);
363 data = val | (reg << 16) | (addr << 21) | BIT(30) | BIT(31);
364 ret = ag7xxx_switch_reg_write(bus, 0x98, data);
368 start = get_timer(0);
370 /* Wait for operation to finish */
372 ret = ag7xxx_switch_reg_read(bus, 0x98, &data);
376 if (get_timer(start) > timeout_ms)
378 } while (data & BIT(31));
380 return data & 0xffff;
383 static int ag7xxx_mdio_read(struct mii_dev *bus, int addr, int devad, int reg)
385 return ag7xxx_mdio_rw(bus, addr, reg, BIT(27));
388 static int ag7xxx_mdio_write(struct mii_dev *bus, int addr, int devad, int reg,
393 ret = ag7xxx_mdio_rw(bus, addr, reg, val);
402 static void ag7xxx_dma_clean_tx(struct udevice *dev)
404 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
405 struct ag7xxx_dma_desc *curr, *next;
409 for (i = 0; i < CONFIG_TX_DESCR_NUM; i++) {
410 curr = &priv->tx_mac_descrtable[i];
411 next = &priv->tx_mac_descrtable[(i + 1) % CONFIG_TX_DESCR_NUM];
413 curr->data_addr = virt_to_phys(&priv->txbuffs[i * CONFIG_ETH_BUFSIZE]);
414 curr->config = AG7XXX_DMADESC_IS_EMPTY;
415 curr->next_desc = virt_to_phys(next);
418 priv->tx_currdescnum = 0;
420 /* Cache: Flush descriptors, don't care about buffers. */
421 start = (u32)(&priv->tx_mac_descrtable[0]);
422 end = start + sizeof(priv->tx_mac_descrtable);
423 flush_dcache_range(start, end);
426 static void ag7xxx_dma_clean_rx(struct udevice *dev)
428 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
429 struct ag7xxx_dma_desc *curr, *next;
433 for (i = 0; i < CONFIG_RX_DESCR_NUM; i++) {
434 curr = &priv->rx_mac_descrtable[i];
435 next = &priv->rx_mac_descrtable[(i + 1) % CONFIG_RX_DESCR_NUM];
437 curr->data_addr = virt_to_phys(&priv->rxbuffs[i * CONFIG_ETH_BUFSIZE]);
438 curr->config = AG7XXX_DMADESC_IS_EMPTY;
439 curr->next_desc = virt_to_phys(next);
442 priv->rx_currdescnum = 0;
444 /* Cache: Flush+Invalidate descriptors, Invalidate buffers. */
445 start = (u32)(&priv->rx_mac_descrtable[0]);
446 end = start + sizeof(priv->rx_mac_descrtable);
447 flush_dcache_range(start, end);
448 invalidate_dcache_range(start, end);
450 start = (u32)&priv->rxbuffs;
451 end = start + sizeof(priv->rxbuffs);
452 invalidate_dcache_range(start, end);
458 static int ag7xxx_eth_send(struct udevice *dev, void *packet, int length)
460 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
461 struct ag7xxx_dma_desc *curr;
464 curr = &priv->tx_mac_descrtable[priv->tx_currdescnum];
466 /* Cache: Invalidate descriptor. */
468 end = start + sizeof(*curr);
469 invalidate_dcache_range(start, end);
471 if (!(curr->config & AG7XXX_DMADESC_IS_EMPTY)) {
472 printf("ag7xxx: Out of TX DMA descriptors!\n");
476 /* Copy the packet into the data buffer. */
477 memcpy(phys_to_virt(curr->data_addr), packet, length);
478 curr->config = length & AG7XXX_DMADESC_PKT_SIZE_MASK;
480 /* Cache: Flush descriptor, Flush buffer. */
482 end = start + sizeof(*curr);
483 flush_dcache_range(start, end);
484 start = (u32)phys_to_virt(curr->data_addr);
485 end = start + length;
486 flush_dcache_range(start, end);
488 /* Load the DMA descriptor and start TX DMA. */
489 writel(AG7XXX_ETH_DMA_TX_CTRL_TXE,
490 priv->regs + AG7XXX_ETH_DMA_TX_CTRL);
492 /* Switch to next TX descriptor. */
493 priv->tx_currdescnum = (priv->tx_currdescnum + 1) % CONFIG_TX_DESCR_NUM;
498 static int ag7xxx_eth_recv(struct udevice *dev, int flags, uchar **packetp)
500 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
501 struct ag7xxx_dma_desc *curr;
502 u32 start, end, length;
504 curr = &priv->rx_mac_descrtable[priv->rx_currdescnum];
506 /* Cache: Invalidate descriptor. */
508 end = start + sizeof(*curr);
509 invalidate_dcache_range(start, end);
511 /* No packets received. */
512 if (curr->config & AG7XXX_DMADESC_IS_EMPTY)
515 length = curr->config & AG7XXX_DMADESC_PKT_SIZE_MASK;
517 /* Cache: Invalidate buffer. */
518 start = (u32)phys_to_virt(curr->data_addr);
519 end = start + length;
520 invalidate_dcache_range(start, end);
522 /* Receive one packet and return length. */
523 *packetp = phys_to_virt(curr->data_addr);
527 static int ag7xxx_eth_free_pkt(struct udevice *dev, uchar *packet,
530 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
531 struct ag7xxx_dma_desc *curr;
534 curr = &priv->rx_mac_descrtable[priv->rx_currdescnum];
536 curr->config = AG7XXX_DMADESC_IS_EMPTY;
538 /* Cache: Flush descriptor. */
540 end = start + sizeof(*curr);
541 flush_dcache_range(start, end);
543 /* Switch to next RX descriptor. */
544 priv->rx_currdescnum = (priv->rx_currdescnum + 1) % CONFIG_RX_DESCR_NUM;
549 static int ag7xxx_eth_start(struct udevice *dev)
551 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
553 /* FIXME: Check if link up */
555 /* Clear the DMA rings. */
556 ag7xxx_dma_clean_tx(dev);
557 ag7xxx_dma_clean_rx(dev);
559 /* Load DMA descriptors and start the RX DMA. */
560 writel(virt_to_phys(&priv->tx_mac_descrtable[priv->tx_currdescnum]),
561 priv->regs + AG7XXX_ETH_DMA_TX_DESC);
562 writel(virt_to_phys(&priv->rx_mac_descrtable[priv->rx_currdescnum]),
563 priv->regs + AG7XXX_ETH_DMA_RX_DESC);
564 writel(AG7XXX_ETH_DMA_RX_CTRL_RXE,
565 priv->regs + AG7XXX_ETH_DMA_RX_CTRL);
570 static void ag7xxx_eth_stop(struct udevice *dev)
572 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
574 /* Stop the TX DMA. */
575 writel(0, priv->regs + AG7XXX_ETH_DMA_TX_CTRL);
576 wait_for_bit_le32(priv->regs + AG7XXX_ETH_DMA_TX_CTRL, ~0, 0,
579 /* Stop the RX DMA. */
580 writel(0, priv->regs + AG7XXX_ETH_DMA_RX_CTRL);
581 wait_for_bit_le32(priv->regs + AG7XXX_ETH_DMA_RX_CTRL, ~0, 0,
588 static int ag7xxx_eth_write_hwaddr(struct udevice *dev)
590 struct eth_pdata *pdata = dev_get_platdata(dev);
591 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
592 unsigned char *mac = pdata->enetaddr;
593 u32 macid_lo, macid_hi;
595 macid_hi = mac[3] | (mac[2] << 8) | (mac[1] << 16) | (mac[0] << 24);
596 macid_lo = (mac[5] << 16) | (mac[4] << 24);
598 writel(macid_lo, priv->regs + AG7XXX_ETH_ADDR1);
599 writel(macid_hi, priv->regs + AG7XXX_ETH_ADDR2);
604 static void ag7xxx_hw_setup(struct udevice *dev)
606 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
609 setbits_be32(priv->regs + AG7XXX_ETH_CFG1,
610 AG7XXX_ETH_CFG1_RX_RST | AG7XXX_ETH_CFG1_TX_RST |
611 AG7XXX_ETH_CFG1_SOFT_RST);
615 writel(AG7XXX_ETH_CFG1_RX_EN | AG7XXX_ETH_CFG1_TX_EN,
616 priv->regs + AG7XXX_ETH_CFG1);
618 if (priv->interface == PHY_INTERFACE_MODE_RMII)
619 speed = AG7XXX_ETH_CFG2_IF_10_100;
621 speed = AG7XXX_ETH_CFG2_IF_1000;
623 clrsetbits_be32(priv->regs + AG7XXX_ETH_CFG2,
624 AG7XXX_ETH_CFG2_IF_SPEED_MASK,
625 speed | AG7XXX_ETH_CFG2_PAD_CRC_EN |
626 AG7XXX_ETH_CFG2_LEN_CHECK);
628 writel(0xfff0000, priv->regs + AG7XXX_ETH_FIFO_CFG_1);
629 writel(0x1fff, priv->regs + AG7XXX_ETH_FIFO_CFG_2);
631 writel(0x1f00, priv->regs + AG7XXX_ETH_FIFO_CFG_0);
632 setbits_be32(priv->regs + AG7XXX_ETH_FIFO_CFG_4, 0x3ffff);
633 writel(0x10ffff, priv->regs + AG7XXX_ETH_FIFO_CFG_1);
634 writel(0xaaa0555, priv->regs + AG7XXX_ETH_FIFO_CFG_2);
635 writel(0x7eccf, priv->regs + AG7XXX_ETH_FIFO_CFG_5);
636 writel(0x1f00140, priv->regs + AG7XXX_ETH_FIFO_CFG_3);
639 static int ag7xxx_mii_get_div(void)
641 ulong freq = get_bus_freq(0);
643 switch (freq / 1000000) {
644 case 150: return 0x7;
645 case 175: return 0x5;
646 case 200: return 0x4;
647 case 210: return 0x9;
648 case 220: return 0x9;
653 static int ag7xxx_mii_setup(struct udevice *dev)
655 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
656 int i, ret, div = ag7xxx_mii_get_div();
659 if (priv->model == AG7XXX_MODEL_AG933X) {
660 /* Unit 0 is PHY-less on AR9331, see datasheet Figure 2-3 */
661 if (priv->interface == PHY_INTERFACE_MODE_RMII)
665 if (priv->model == AG7XXX_MODEL_AG934X)
667 else if (priv->model == AG7XXX_MODEL_AG953X)
669 else if (priv->model == AG7XXX_MODEL_AG956X)
672 if (priv->model == AG7XXX_MODEL_AG934X ||
673 priv->model == AG7XXX_MODEL_AG953X ||
674 priv->model == AG7XXX_MODEL_AG956X) {
675 writel(AG7XXX_ETH_MII_MGMT_CFG_RESET | reg,
676 priv->regs + AG7XXX_ETH_MII_MGMT_CFG);
677 writel(reg, priv->regs + AG7XXX_ETH_MII_MGMT_CFG);
681 for (i = 0; i < 10; i++) {
682 writel(AG7XXX_ETH_MII_MGMT_CFG_RESET | div,
683 priv->regs + AG7XXX_ETH_MII_MGMT_CFG);
684 writel(div, priv->regs + AG7XXX_ETH_MII_MGMT_CFG);
686 /* Check the switch */
687 ret = ag7xxx_switch_reg_read(priv->bus, 0x10c, ®);
691 if (reg != 0x18007fff)
700 static int ag933x_phy_setup_wan(struct udevice *dev)
702 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
704 /* Configure switch port 4 (GMAC0) */
705 return ag7xxx_mdio_write(priv->bus, 4, 0, MII_BMCR, 0x9000);
708 static int ag933x_phy_setup_lan(struct udevice *dev)
710 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
714 /* Reset the switch */
715 ret = ag7xxx_switch_reg_read(priv->bus, 0, ®);
719 ret = ag7xxx_switch_reg_write(priv->bus, 0, reg);
724 ret = ag7xxx_switch_reg_read(priv->bus, 0, ®);
727 } while (reg & BIT(31));
729 /* Configure switch ports 0...3 (GMAC1) */
730 for (i = 0; i < 4; i++) {
731 ret = ag7xxx_mdio_write(priv->bus, 0x4, 0, MII_BMCR, 0x9000);
736 /* Enable CPU port */
737 ret = ag7xxx_switch_reg_write(priv->bus, 0x78, BIT(8));
741 for (i = 0; i < 4; i++) {
742 ret = ag7xxx_switch_reg_write(priv->bus, i * 0x100, BIT(9));
748 ret = ag7xxx_switch_reg_write(priv->bus, 0x38, 0xc000050e);
752 /* Disable Atheros header */
753 ret = ag7xxx_switch_reg_write(priv->bus, 0x104, 0x4004);
757 /* Tag priority mapping */
758 ret = ag7xxx_switch_reg_write(priv->bus, 0x70, 0xfa50);
762 /* Enable ARP packets to the CPU */
763 ret = ag7xxx_switch_reg_read(priv->bus, 0x5c, ®);
767 ret = ag7xxx_switch_reg_write(priv->bus, 0x5c, reg);
774 static int ag953x_phy_setup_wan(struct udevice *dev)
778 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
780 /* Set wan port connect to GE0 */
781 ret = ag7xxx_switch_reg_read(priv->bus, 0x8, ®);
785 ret = ag7xxx_switch_reg_write(priv->bus, 0x8, reg | BIT(28));
789 /* Configure switch port 4 (GMAC0) */
790 ret = ag7xxx_switch_write(priv->bus, 4, MII_BMCR, 0x9000);
797 static int ag953x_phy_setup_lan(struct udevice *dev)
799 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
803 /* Reset the switch */
804 ret = ag7xxx_switch_reg_read(priv->bus, 0, ®);
808 ret = ag7xxx_switch_reg_write(priv->bus, 0, reg | BIT(31));
813 ret = ag7xxx_switch_reg_read(priv->bus, 0, ®);
816 } while (reg & BIT(31));
818 ret = ag7xxx_switch_reg_write(priv->bus, 0x100, 0x4e);
823 ret = ag7xxx_switch_reg_read(priv->bus, 0x4, ®);
827 ret = ag7xxx_switch_reg_write(priv->bus, 0x4, reg | BIT(6));
831 /* Configure switch ports 0...4 (GMAC1) */
832 for (i = 0; i < 5; i++) {
833 ret = ag7xxx_switch_write(priv->bus, i, MII_BMCR, 0x9000);
838 for (i = 0; i < 5; i++) {
839 ret = ag7xxx_switch_reg_write(priv->bus, (i + 2) * 0x100, BIT(9));
845 ret = ag7xxx_switch_reg_write(priv->bus, 0x38, 0xc000050e);
849 /* Disable Atheros header */
850 ret = ag7xxx_switch_reg_write(priv->bus, 0x104, 0x4004);
854 /* Tag priority mapping */
855 ret = ag7xxx_switch_reg_write(priv->bus, 0x70, 0xfa50);
859 /* Enable ARP packets to the CPU */
860 ret = ag7xxx_switch_reg_read(priv->bus, 0x5c, ®);
864 ret = ag7xxx_switch_reg_write(priv->bus, 0x5c, reg | 0x100000);
868 /* Enable broadcast packets to the CPU */
869 ret = ag7xxx_switch_reg_read(priv->bus, 0x2c, ®);
873 ret = ag7xxx_switch_reg_write(priv->bus, 0x2c, reg | BIT(25) | BIT(26));
880 static int ag933x_phy_setup_reset_set(struct udevice *dev, int port)
882 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
885 if (priv->model == AG7XXX_MODEL_AG953X ||
886 priv->model == AG7XXX_MODEL_AG956X) {
887 ret = ag7xxx_switch_write(priv->bus, port, MII_ADVERTISE,
890 ret = ag7xxx_mdio_write(priv->bus, port, 0, MII_ADVERTISE,
891 ADVERTISE_ALL | ADVERTISE_PAUSE_CAP |
892 ADVERTISE_PAUSE_ASYM);
897 if (priv->model == AG7XXX_MODEL_AG934X) {
898 ret = ag7xxx_mdio_write(priv->bus, port, 0, MII_CTRL1000,
902 } else if (priv->model == AG7XXX_MODEL_AG956X) {
903 ret = ag7xxx_switch_write(priv->bus, port, MII_CTRL1000,
909 if (priv->model == AG7XXX_MODEL_AG953X ||
910 priv->model == AG7XXX_MODEL_AG956X)
911 return ag7xxx_switch_write(priv->bus, port, MII_BMCR,
912 BMCR_ANENABLE | BMCR_RESET);
914 return ag7xxx_mdio_write(priv->bus, port, 0, MII_BMCR,
915 BMCR_ANENABLE | BMCR_RESET);
918 static int ag933x_phy_setup_reset_fin(struct udevice *dev, int port)
920 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
924 if (priv->model == AG7XXX_MODEL_AG953X ||
925 priv->model == AG7XXX_MODEL_AG956X) {
927 ret = ag7xxx_switch_read(priv->bus, port, MII_BMCR, ®);
931 } while (reg & BMCR_RESET);
934 ret = ag7xxx_mdio_read(priv->bus, port, 0, MII_BMCR);
938 } while (ret & BMCR_RESET);
944 static int ag933x_phy_setup_common(struct udevice *dev)
946 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
950 if (priv->model == AG7XXX_MODEL_AG933X)
952 else if (priv->model == AG7XXX_MODEL_AG934X ||
953 priv->model == AG7XXX_MODEL_AG953X ||
954 priv->model == AG7XXX_MODEL_AG956X)
959 if (priv->interface == PHY_INTERFACE_MODE_RMII) {
960 ret = ag933x_phy_setup_reset_set(dev, phymax);
964 ret = ag933x_phy_setup_reset_fin(dev, phymax);
968 /* Read out link status */
969 if (priv->model == AG7XXX_MODEL_AG953X)
970 ret = ag7xxx_switch_read(priv->bus, phymax, MII_MIPSCR, ®);
972 ret = ag7xxx_mdio_read(priv->bus, phymax, 0, MII_MIPSCR);
980 for (i = 0; i < phymax; i++) {
981 ret = ag933x_phy_setup_reset_set(dev, i);
986 for (i = 0; i < phymax; i++) {
987 ret = ag933x_phy_setup_reset_fin(dev, i);
992 for (i = 0; i < phymax; i++) {
993 /* Read out link status */
994 if (priv->model == AG7XXX_MODEL_AG953X ||
995 priv->model == AG7XXX_MODEL_AG956X)
996 ret = ag7xxx_switch_read(priv->bus, i, MII_MIPSCR, ®);
998 ret = ag7xxx_mdio_read(priv->bus, i, 0, MII_MIPSCR);
1006 static int ag934x_phy_setup(struct udevice *dev)
1008 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
1012 ret = ag7xxx_switch_reg_write(priv->bus, 0x624, 0x7f7f7f7f);
1015 ret = ag7xxx_switch_reg_write(priv->bus, 0x10, 0x40000000);
1018 ret = ag7xxx_switch_reg_write(priv->bus, 0x4, 0x07600000);
1021 ret = ag7xxx_switch_reg_write(priv->bus, 0xc, 0x01000000);
1024 ret = ag7xxx_switch_reg_write(priv->bus, 0x7c, 0x0000007e);
1028 /* AR8327/AR8328 v1.0 fixup */
1029 ret = ag7xxx_switch_reg_read(priv->bus, 0, ®);
1032 if ((reg & 0xffff) == 0x1201) {
1033 for (i = 0; i < 5; i++) {
1034 ret = ag7xxx_mdio_write(priv->bus, i, 0, 0x1d, 0x0);
1037 ret = ag7xxx_mdio_write(priv->bus, i, 0, 0x1e, 0x02ea);
1040 ret = ag7xxx_mdio_write(priv->bus, i, 0, 0x1d, 0x3d);
1043 ret = ag7xxx_mdio_write(priv->bus, i, 0, 0x1e, 0x68a0);
1049 ret = ag7xxx_switch_reg_read(priv->bus, 0x66c, ®);
1053 ret = ag7xxx_switch_reg_write(priv->bus, 0x66c, reg);
1060 static int ag956x_phy_setup(struct udevice *dev)
1062 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
1066 ret = ag7xxx_switch_reg_read(priv->bus, 0x0, ®);
1069 if ((reg & 0xffff) >= 0x1301)
1074 ret = ag7xxx_switch_reg_write(priv->bus, 0x4, BIT(7));
1078 ret = ag7xxx_switch_reg_write(priv->bus, 0xe0, ctrl);
1082 ret = ag7xxx_switch_reg_write(priv->bus, 0x624, 0x7f7f7f7f);
1087 * Values suggested by the switch team when s17 in sgmii
1088 * configuration. 0x10(S17_PWS_REG) = 0x602613a0
1090 ret = ag7xxx_switch_reg_write(priv->bus, 0x10, 0x602613a0);
1094 ret = ag7xxx_switch_reg_write(priv->bus, 0x7c, 0x0000007e);
1098 /* AR8337/AR8334 v1.0 fixup */
1099 ret = ag7xxx_switch_reg_read(priv->bus, 0, ®);
1102 if ((reg & 0xffff) == 0x1301) {
1103 for (i = 0; i < 5; i++) {
1104 /* Turn on Gigabit clock */
1105 ret = ag7xxx_switch_write(priv->bus, i, 0x1d, 0x3d);
1108 ret = ag7xxx_switch_write(priv->bus, i, 0x1e, 0x6820);
1117 static int ag7xxx_mac_probe(struct udevice *dev)
1119 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
1122 ag7xxx_hw_setup(dev);
1123 ret = ag7xxx_mii_setup(dev);
1127 ag7xxx_eth_write_hwaddr(dev);
1129 if (priv->model == AG7XXX_MODEL_AG933X) {
1130 if (priv->interface == PHY_INTERFACE_MODE_RMII)
1131 ret = ag933x_phy_setup_wan(dev);
1133 ret = ag933x_phy_setup_lan(dev);
1134 } else if (priv->model == AG7XXX_MODEL_AG953X) {
1135 if (priv->interface == PHY_INTERFACE_MODE_RMII)
1136 ret = ag953x_phy_setup_wan(dev);
1138 ret = ag953x_phy_setup_lan(dev);
1139 } else if (priv->model == AG7XXX_MODEL_AG934X) {
1140 ret = ag934x_phy_setup(dev);
1141 } else if (priv->model == AG7XXX_MODEL_AG956X) {
1142 ret = ag956x_phy_setup(dev);
1150 return ag933x_phy_setup_common(dev);
1153 static int ag7xxx_mdio_probe(struct udevice *dev)
1155 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
1156 struct mii_dev *bus = mdio_alloc();
1161 bus->read = ag7xxx_mdio_read;
1162 bus->write = ag7xxx_mdio_write;
1163 snprintf(bus->name, sizeof(bus->name), dev->name);
1165 bus->priv = (void *)priv;
1167 return mdio_register(bus);
1170 static int ag7xxx_get_phy_iface_offset(struct udevice *dev)
1174 offset = fdtdec_lookup_phandle(gd->fdt_blob, dev_of_offset(dev), "phy");
1176 debug("%s: PHY OF node not found (ret=%i)\n", __func__, offset);
1180 offset = fdt_parent_offset(gd->fdt_blob, offset);
1182 debug("%s: PHY OF node parent MDIO bus not found (ret=%i)\n",
1187 offset = fdt_parent_offset(gd->fdt_blob, offset);
1189 debug("%s: PHY MDIO OF node parent MAC not found (ret=%i)\n",
1197 static int ag7xxx_eth_probe(struct udevice *dev)
1199 struct eth_pdata *pdata = dev_get_platdata(dev);
1200 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
1201 void __iomem *iobase, *phyiobase;
1204 /* Decoding of convoluted PHY wiring on Atheros MIPS. */
1205 ret = ag7xxx_get_phy_iface_offset(dev);
1208 phyreg = fdtdec_get_int(gd->fdt_blob, ret, "reg", -1);
1210 iobase = map_physmem(pdata->iobase, 0x200, MAP_NOCACHE);
1211 phyiobase = map_physmem(phyreg, 0x200, MAP_NOCACHE);
1213 debug("%s, iobase=%p, phyiobase=%p, priv=%p\n",
1214 __func__, iobase, phyiobase, priv);
1215 priv->regs = iobase;
1216 priv->phyregs = phyiobase;
1217 priv->interface = pdata->phy_interface;
1218 priv->model = dev_get_driver_data(dev);
1220 ret = ag7xxx_mdio_probe(dev);
1224 priv->bus = miiphy_get_dev_by_name(dev->name);
1226 ret = ag7xxx_mac_probe(dev);
1227 debug("%s, ret=%d\n", __func__, ret);
1232 static int ag7xxx_eth_remove(struct udevice *dev)
1234 struct ar7xxx_eth_priv *priv = dev_get_priv(dev);
1237 mdio_unregister(priv->bus);
1238 mdio_free(priv->bus);
1243 static const struct eth_ops ag7xxx_eth_ops = {
1244 .start = ag7xxx_eth_start,
1245 .send = ag7xxx_eth_send,
1246 .recv = ag7xxx_eth_recv,
1247 .free_pkt = ag7xxx_eth_free_pkt,
1248 .stop = ag7xxx_eth_stop,
1249 .write_hwaddr = ag7xxx_eth_write_hwaddr,
1252 static int ag7xxx_eth_ofdata_to_platdata(struct udevice *dev)
1254 struct eth_pdata *pdata = dev_get_platdata(dev);
1255 const char *phy_mode;
1258 pdata->iobase = devfdt_get_addr(dev);
1259 pdata->phy_interface = -1;
1261 /* Decoding of convoluted PHY wiring on Atheros MIPS. */
1262 ret = ag7xxx_get_phy_iface_offset(dev);
1266 phy_mode = fdt_getprop(gd->fdt_blob, ret, "phy-mode", NULL);
1268 pdata->phy_interface = phy_get_interface_by_name(phy_mode);
1269 if (pdata->phy_interface == -1) {
1270 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
1277 static const struct udevice_id ag7xxx_eth_ids[] = {
1278 { .compatible = "qca,ag933x-mac", .data = AG7XXX_MODEL_AG933X },
1279 { .compatible = "qca,ag934x-mac", .data = AG7XXX_MODEL_AG934X },
1280 { .compatible = "qca,ag953x-mac", .data = AG7XXX_MODEL_AG953X },
1281 { .compatible = "qca,ag956x-mac", .data = AG7XXX_MODEL_AG956X },
1285 U_BOOT_DRIVER(eth_ag7xxx) = {
1286 .name = "eth_ag7xxx",
1288 .of_match = ag7xxx_eth_ids,
1289 .ofdata_to_platdata = ag7xxx_eth_ofdata_to_platdata,
1290 .probe = ag7xxx_eth_probe,
1291 .remove = ag7xxx_eth_remove,
1292 .ops = &ag7xxx_eth_ops,
1293 .priv_auto_alloc_size = sizeof(struct ar7xxx_eth_priv),
1294 .platdata_auto_alloc_size = sizeof(struct eth_pdata),
1295 .flags = DM_FLAG_ALLOC_PRIV_DMA,