1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2011 Michal Simek
5 * Michal SIMEK <monstr@monstr.eu>
7 * Based on Xilinx gmac driver:
8 * (C) Copyright 2011 Xilinx
24 #include <asm/system.h>
25 #include <asm/arch/hardware.h>
26 #include <asm/arch/sys_proto.h>
27 #include <linux/errno.h>
29 DECLARE_GLOBAL_DATA_PTR;
31 /* Bit/mask specification */
32 #define ZYNQ_GEM_PHYMNTNC_OP_MASK 0x40020000 /* operation mask bits */
33 #define ZYNQ_GEM_PHYMNTNC_OP_R_MASK 0x20000000 /* read operation */
34 #define ZYNQ_GEM_PHYMNTNC_OP_W_MASK 0x10000000 /* write operation */
35 #define ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK 23 /* Shift bits for PHYAD */
36 #define ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK 18 /* Shift bits for PHREG */
38 #define ZYNQ_GEM_RXBUF_EOF_MASK 0x00008000 /* End of frame. */
39 #define ZYNQ_GEM_RXBUF_SOF_MASK 0x00004000 /* Start of frame. */
40 #define ZYNQ_GEM_RXBUF_LEN_MASK 0x00003FFF /* Mask for length field */
42 #define ZYNQ_GEM_RXBUF_WRAP_MASK 0x00000002 /* Wrap bit, last BD */
43 #define ZYNQ_GEM_RXBUF_NEW_MASK 0x00000001 /* Used bit.. */
44 #define ZYNQ_GEM_RXBUF_ADD_MASK 0xFFFFFFFC /* Mask for address */
46 /* Wrap bit, last descriptor */
47 #define ZYNQ_GEM_TXBUF_WRAP_MASK 0x40000000
48 #define ZYNQ_GEM_TXBUF_LAST_MASK 0x00008000 /* Last buffer */
49 #define ZYNQ_GEM_TXBUF_USED_MASK 0x80000000 /* Used by Hw */
51 #define ZYNQ_GEM_NWCTRL_TXEN_MASK 0x00000008 /* Enable transmit */
52 #define ZYNQ_GEM_NWCTRL_RXEN_MASK 0x00000004 /* Enable receive */
53 #define ZYNQ_GEM_NWCTRL_MDEN_MASK 0x00000010 /* Enable MDIO port */
54 #define ZYNQ_GEM_NWCTRL_STARTTX_MASK 0x00000200 /* Start tx (tx_go) */
56 #define ZYNQ_GEM_NWCFG_SPEED100 0x00000001 /* 100 Mbps operation */
57 #define ZYNQ_GEM_NWCFG_SPEED1000 0x00000400 /* 1Gbps operation */
58 #define ZYNQ_GEM_NWCFG_FDEN 0x00000002 /* Full Duplex mode */
59 #define ZYNQ_GEM_NWCFG_FSREM 0x00020000 /* FCS removal */
60 #define ZYNQ_GEM_NWCFG_SGMII_ENBL 0x08000000 /* SGMII Enable */
61 #define ZYNQ_GEM_NWCFG_PCS_SEL 0x00000800 /* PCS select */
63 #define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x00100000 /* Div pclk by 64, max 160MHz */
65 #define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x000c0000 /* Div pclk by 48, max 120MHz */
69 # define ZYNQ_GEM_DBUS_WIDTH (1 << 21) /* 64 bit bus */
71 # define ZYNQ_GEM_DBUS_WIDTH (0 << 21) /* 32 bit bus */
74 #define ZYNQ_GEM_NWCFG_INIT (ZYNQ_GEM_DBUS_WIDTH | \
75 ZYNQ_GEM_NWCFG_FDEN | \
76 ZYNQ_GEM_NWCFG_FSREM | \
77 ZYNQ_GEM_NWCFG_MDCCLKDIV)
79 #define ZYNQ_GEM_NWSR_MDIOIDLE_MASK 0x00000004 /* PHY management idle */
81 #define ZYNQ_GEM_DMACR_BLENGTH 0x00000004 /* INCR4 AHB bursts */
82 /* Use full configured addressable space (8 Kb) */
83 #define ZYNQ_GEM_DMACR_RXSIZE 0x00000300
84 /* Use full configured addressable space (4 Kb) */
85 #define ZYNQ_GEM_DMACR_TXSIZE 0x00000400
86 /* Set with binary 00011000 to use 1536 byte(1*max length frame/buffer) */
87 #define ZYNQ_GEM_DMACR_RXBUF 0x00180000
89 #if defined(CONFIG_PHYS_64BIT)
90 # define ZYNQ_GEM_DMA_BUS_WIDTH BIT(30) /* 64 bit bus */
92 # define ZYNQ_GEM_DMA_BUS_WIDTH (0 << 30) /* 32 bit bus */
95 #define ZYNQ_GEM_DMACR_INIT (ZYNQ_GEM_DMACR_BLENGTH | \
96 ZYNQ_GEM_DMACR_RXSIZE | \
97 ZYNQ_GEM_DMACR_TXSIZE | \
98 ZYNQ_GEM_DMACR_RXBUF | \
99 ZYNQ_GEM_DMA_BUS_WIDTH)
101 #define ZYNQ_GEM_TSR_DONE 0x00000020 /* Tx done mask */
103 #define ZYNQ_GEM_PCS_CTL_ANEG_ENBL 0x1000
105 /* Use MII register 1 (MII status register) to detect PHY */
106 #define PHY_DETECT_REG 1
108 /* Mask used to verify certain PHY features (or register contents)
109 * in the register above:
110 * 0x1000: 10Mbps full duplex support
111 * 0x0800: 10Mbps half duplex support
112 * 0x0008: Auto-negotiation support
114 #define PHY_DETECT_MASK 0x1808
116 /* TX BD status masks */
117 #define ZYNQ_GEM_TXBUF_FRMLEN_MASK 0x000007ff
118 #define ZYNQ_GEM_TXBUF_EXHAUSTED 0x08000000
119 #define ZYNQ_GEM_TXBUF_UNDERRUN 0x10000000
121 /* Clock frequencies for different speeds */
122 #define ZYNQ_GEM_FREQUENCY_10 2500000UL
123 #define ZYNQ_GEM_FREQUENCY_100 25000000UL
124 #define ZYNQ_GEM_FREQUENCY_1000 125000000UL
126 /* Device registers */
127 struct zynq_gem_regs {
128 u32 nwctrl; /* 0x0 - Network Control reg */
129 u32 nwcfg; /* 0x4 - Network Config reg */
130 u32 nwsr; /* 0x8 - Network Status reg */
132 u32 dmacr; /* 0x10 - DMA Control reg */
133 u32 txsr; /* 0x14 - TX Status reg */
134 u32 rxqbase; /* 0x18 - RX Q Base address reg */
135 u32 txqbase; /* 0x1c - TX Q Base address reg */
136 u32 rxsr; /* 0x20 - RX Status reg */
138 u32 idr; /* 0x2c - Interrupt Disable reg */
140 u32 phymntnc; /* 0x34 - Phy Maintaince reg */
142 u32 hashl; /* 0x80 - Hash Low address reg */
143 u32 hashh; /* 0x84 - Hash High address reg */
146 u32 laddr[4][LADDR_HIGH + 1]; /* 0x8c - Specific1 addr low/high reg */
147 u32 match[4]; /* 0xa8 - Type ID1 Match reg */
150 u32 stat[STAT_SIZE]; /* 0x100 - Octects transmitted Low reg */
154 u32 transmit_q1_ptr; /* 0x440 - Transmit priority queue 1 */
156 u32 receive_q1_ptr; /* 0x480 - Receive priority queue 1 */
158 u32 upper_txqbase; /* 0x4C8 - Upper tx_q base addr */
160 u32 upper_rxqbase; /* 0x4D4 - Upper rx_q base addr */
165 u32 addr; /* Next descriptor pointer */
167 #if defined(CONFIG_PHYS_64BIT)
174 /* Page table entries are set to 1MB, or multiples of 1MB
175 * (not < 1MB). driver uses less bd's so use 1MB bdspace.
177 #define BD_SPACE 0x100000
178 /* BD separation space */
179 #define BD_SEPRN_SPACE (RX_BUF * sizeof(struct emac_bd))
181 /* Setup the first free TX descriptor */
182 #define TX_FREE_DESC 2
184 /* Initialized, rxbd_current, rx_first_buf must be 0 after init */
185 struct zynq_gem_priv {
186 struct emac_bd *tx_bd;
187 struct emac_bd *rx_bd;
193 struct zynq_gem_regs *iobase;
194 phy_interface_t interface;
195 struct phy_device *phydev;
203 static int phy_setup_op(struct zynq_gem_priv *priv, u32 phy_addr, u32 regnum,
207 struct zynq_gem_regs *regs = priv->iobase;
210 err = wait_for_bit_le32(®s->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK,
215 /* Construct mgtcr mask for the operation */
216 mgtcr = ZYNQ_GEM_PHYMNTNC_OP_MASK | op |
217 (phy_addr << ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK) |
218 (regnum << ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK) | *data;
220 /* Write mgtcr and wait for completion */
221 writel(mgtcr, ®s->phymntnc);
223 err = wait_for_bit_le32(®s->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK,
228 if (op == ZYNQ_GEM_PHYMNTNC_OP_R_MASK)
229 *data = readl(®s->phymntnc);
234 static int phyread(struct zynq_gem_priv *priv, u32 phy_addr,
235 u32 regnum, u16 *val)
239 ret = phy_setup_op(priv, phy_addr, regnum,
240 ZYNQ_GEM_PHYMNTNC_OP_R_MASK, val);
243 debug("%s: phy_addr %d, regnum 0x%x, val 0x%x\n", __func__,
244 phy_addr, regnum, *val);
249 static int phywrite(struct zynq_gem_priv *priv, u32 phy_addr,
250 u32 regnum, u16 data)
252 debug("%s: phy_addr %d, regnum 0x%x, data 0x%x\n", __func__, phy_addr,
255 return phy_setup_op(priv, phy_addr, regnum,
256 ZYNQ_GEM_PHYMNTNC_OP_W_MASK, &data);
259 static int phy_detection(struct udevice *dev)
263 struct zynq_gem_priv *priv = dev->priv;
265 if (priv->phyaddr != -1) {
266 phyread(priv, priv->phyaddr, PHY_DETECT_REG, &phyreg);
267 if ((phyreg != 0xFFFF) &&
268 ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) {
269 /* Found a valid PHY address */
270 debug("Default phy address %d is valid\n",
274 debug("PHY address is not setup correctly %d\n",
280 debug("detecting phy address\n");
281 if (priv->phyaddr == -1) {
282 /* detect the PHY address */
283 for (i = 31; i >= 0; i--) {
284 phyread(priv, i, PHY_DETECT_REG, &phyreg);
285 if ((phyreg != 0xFFFF) &&
286 ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) {
287 /* Found a valid PHY address */
289 debug("Found valid phy address, %d\n", i);
294 printf("PHY is not detected\n");
298 static int zynq_gem_setup_mac(struct udevice *dev)
300 u32 i, macaddrlow, macaddrhigh;
301 struct eth_pdata *pdata = dev_get_platdata(dev);
302 struct zynq_gem_priv *priv = dev_get_priv(dev);
303 struct zynq_gem_regs *regs = priv->iobase;
305 /* Set the MAC bits [31:0] in BOT */
306 macaddrlow = pdata->enetaddr[0];
307 macaddrlow |= pdata->enetaddr[1] << 8;
308 macaddrlow |= pdata->enetaddr[2] << 16;
309 macaddrlow |= pdata->enetaddr[3] << 24;
311 /* Set MAC bits [47:32] in TOP */
312 macaddrhigh = pdata->enetaddr[4];
313 macaddrhigh |= pdata->enetaddr[5] << 8;
315 for (i = 0; i < 4; i++) {
316 writel(0, ®s->laddr[i][LADDR_LOW]);
317 writel(0, ®s->laddr[i][LADDR_HIGH]);
318 /* Do not use MATCHx register */
319 writel(0, ®s->match[i]);
322 writel(macaddrlow, ®s->laddr[0][LADDR_LOW]);
323 writel(macaddrhigh, ®s->laddr[0][LADDR_HIGH]);
328 static int zynq_phy_init(struct udevice *dev)
331 struct zynq_gem_priv *priv = dev_get_priv(dev);
332 struct zynq_gem_regs *regs = priv->iobase;
333 const u32 supported = SUPPORTED_10baseT_Half |
334 SUPPORTED_10baseT_Full |
335 SUPPORTED_100baseT_Half |
336 SUPPORTED_100baseT_Full |
337 SUPPORTED_1000baseT_Half |
338 SUPPORTED_1000baseT_Full;
340 /* Enable only MDIO bus */
341 writel(ZYNQ_GEM_NWCTRL_MDEN_MASK, ®s->nwctrl);
343 if ((priv->interface != PHY_INTERFACE_MODE_SGMII) &&
344 (priv->interface != PHY_INTERFACE_MODE_GMII)) {
345 ret = phy_detection(dev);
347 printf("GEM PHY init failed\n");
352 priv->phydev = phy_connect(priv->bus, priv->phyaddr, dev,
357 priv->phydev->supported &= supported | ADVERTISED_Pause |
358 ADVERTISED_Asym_Pause;
359 if (priv->max_speed) {
360 ret = phy_set_supported(priv->phydev, priv->max_speed);
365 priv->phydev->advertising = priv->phydev->supported;
366 priv->phydev->node = priv->phy_of_node;
368 return phy_config(priv->phydev);
371 static int zynq_gem_init(struct udevice *dev)
375 unsigned long clk_rate = 0;
376 struct zynq_gem_priv *priv = dev_get_priv(dev);
377 struct zynq_gem_regs *regs = priv->iobase;
378 struct emac_bd *dummy_tx_bd = &priv->tx_bd[TX_FREE_DESC];
379 struct emac_bd *dummy_rx_bd = &priv->tx_bd[TX_FREE_DESC + 2];
382 /* Disable all interrupts */
383 writel(0xFFFFFFFF, ®s->idr);
385 /* Disable the receiver & transmitter */
386 writel(0, ®s->nwctrl);
387 writel(0, ®s->txsr);
388 writel(0, ®s->rxsr);
389 writel(0, ®s->phymntnc);
391 /* Clear the Hash registers for the mac address
392 * pointed by AddressPtr
394 writel(0x0, ®s->hashl);
395 /* Write bits [63:32] in TOP */
396 writel(0x0, ®s->hashh);
398 /* Clear all counters */
399 for (i = 0; i < STAT_SIZE; i++)
400 readl(®s->stat[i]);
402 /* Setup RxBD space */
403 memset(priv->rx_bd, 0, RX_BUF * sizeof(struct emac_bd));
405 for (i = 0; i < RX_BUF; i++) {
406 priv->rx_bd[i].status = 0xF0000000;
407 priv->rx_bd[i].addr =
408 (lower_32_bits((ulong)(priv->rxbuffers)
409 + (i * PKTSIZE_ALIGN)));
410 #if defined(CONFIG_PHYS_64BIT)
411 priv->rx_bd[i].addr_hi =
412 (upper_32_bits((ulong)(priv->rxbuffers)
413 + (i * PKTSIZE_ALIGN)));
416 /* WRAP bit to last BD */
417 priv->rx_bd[--i].addr |= ZYNQ_GEM_RXBUF_WRAP_MASK;
418 /* Write RxBDs to IP */
419 writel(lower_32_bits((ulong)priv->rx_bd), ®s->rxqbase);
420 #if defined(CONFIG_PHYS_64BIT)
421 writel(upper_32_bits((ulong)priv->rx_bd), ®s->upper_rxqbase);
424 /* Setup for DMA Configuration register */
425 writel(ZYNQ_GEM_DMACR_INIT, ®s->dmacr);
427 /* Setup for Network Control register, MDIO, Rx and Tx enable */
428 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_MDEN_MASK);
430 /* Disable the second priority queue */
431 dummy_tx_bd->addr = 0;
432 #if defined(CONFIG_PHYS_64BIT)
433 dummy_tx_bd->addr_hi = 0;
435 dummy_tx_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK |
436 ZYNQ_GEM_TXBUF_LAST_MASK|
437 ZYNQ_GEM_TXBUF_USED_MASK;
439 dummy_rx_bd->addr = ZYNQ_GEM_RXBUF_WRAP_MASK |
440 ZYNQ_GEM_RXBUF_NEW_MASK;
441 #if defined(CONFIG_PHYS_64BIT)
442 dummy_rx_bd->addr_hi = 0;
444 dummy_rx_bd->status = 0;
446 writel((ulong)dummy_tx_bd, ®s->transmit_q1_ptr);
447 writel((ulong)dummy_rx_bd, ®s->receive_q1_ptr);
452 ret = phy_startup(priv->phydev);
456 if (!priv->phydev->link) {
457 printf("%s: No link.\n", priv->phydev->dev->name);
461 nwconfig = ZYNQ_GEM_NWCFG_INIT;
464 * Set SGMII enable PCS selection only if internal PCS/PMA
465 * core is used and interface is SGMII.
467 if (priv->interface == PHY_INTERFACE_MODE_SGMII &&
469 nwconfig |= ZYNQ_GEM_NWCFG_SGMII_ENBL |
470 ZYNQ_GEM_NWCFG_PCS_SEL;
472 writel(readl(®s->pcscntrl) | ZYNQ_GEM_PCS_CTL_ANEG_ENBL,
477 switch (priv->phydev->speed) {
479 writel(nwconfig | ZYNQ_GEM_NWCFG_SPEED1000,
481 clk_rate = ZYNQ_GEM_FREQUENCY_1000;
484 writel(nwconfig | ZYNQ_GEM_NWCFG_SPEED100,
486 clk_rate = ZYNQ_GEM_FREQUENCY_100;
489 clk_rate = ZYNQ_GEM_FREQUENCY_10;
493 #if !defined(CONFIG_ARCH_VERSAL)
494 ret = clk_set_rate(&priv->clk, clk_rate);
495 if (IS_ERR_VALUE(ret) && ret != (unsigned long)-ENOSYS) {
496 dev_err(dev, "failed to set tx clock rate\n");
500 ret = clk_enable(&priv->clk);
501 if (ret && ret != -ENOSYS) {
502 dev_err(dev, "failed to enable tx clock\n");
506 debug("requested clk_rate %ld\n", clk_rate);
509 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK |
510 ZYNQ_GEM_NWCTRL_TXEN_MASK);
515 static int zynq_gem_send(struct udevice *dev, void *ptr, int len)
519 struct zynq_gem_priv *priv = dev_get_priv(dev);
520 struct zynq_gem_regs *regs = priv->iobase;
521 struct emac_bd *current_bd = &priv->tx_bd[1];
524 memset(priv->tx_bd, 0, sizeof(struct emac_bd));
526 priv->tx_bd->addr = lower_32_bits((ulong)ptr);
527 #if defined(CONFIG_PHYS_64BIT)
528 priv->tx_bd->addr_hi = upper_32_bits((ulong)ptr);
530 priv->tx_bd->status = (len & ZYNQ_GEM_TXBUF_FRMLEN_MASK) |
531 ZYNQ_GEM_TXBUF_LAST_MASK;
532 /* Dummy descriptor to mark it as the last in descriptor chain */
533 current_bd->addr = 0x0;
534 #if defined(CONFIG_PHYS_64BIT)
535 current_bd->addr_hi = 0x0;
537 current_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK |
538 ZYNQ_GEM_TXBUF_LAST_MASK|
539 ZYNQ_GEM_TXBUF_USED_MASK;
542 writel(lower_32_bits((ulong)priv->tx_bd), ®s->txqbase);
543 #if defined(CONFIG_PHYS_64BIT)
544 writel(upper_32_bits((ulong)priv->tx_bd), ®s->upper_txqbase);
548 addr &= ~(ARCH_DMA_MINALIGN - 1);
549 size = roundup(len, ARCH_DMA_MINALIGN);
550 flush_dcache_range(addr, addr + size);
552 addr = (ulong)priv->rxbuffers;
553 addr &= ~(ARCH_DMA_MINALIGN - 1);
554 size = roundup((RX_BUF * PKTSIZE_ALIGN), ARCH_DMA_MINALIGN);
555 flush_dcache_range(addr, addr + size);
559 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_STARTTX_MASK);
561 /* Read TX BD status */
562 if (priv->tx_bd->status & ZYNQ_GEM_TXBUF_EXHAUSTED)
563 printf("TX buffers exhausted in mid frame\n");
565 return wait_for_bit_le32(®s->txsr, ZYNQ_GEM_TSR_DONE,
569 /* Do not check frame_recd flag in rx_status register 0x20 - just poll BD */
570 static int zynq_gem_recv(struct udevice *dev, int flags, uchar **packetp)
574 struct zynq_gem_priv *priv = dev_get_priv(dev);
575 struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current];
577 if (!(current_bd->addr & ZYNQ_GEM_RXBUF_NEW_MASK))
580 if (!(current_bd->status &
581 (ZYNQ_GEM_RXBUF_SOF_MASK | ZYNQ_GEM_RXBUF_EOF_MASK))) {
582 printf("GEM: SOF or EOF not set for last buffer received!\n");
586 frame_len = current_bd->status & ZYNQ_GEM_RXBUF_LEN_MASK;
588 printf("%s: Zero size packet?\n", __func__);
592 #if defined(CONFIG_PHYS_64BIT)
593 addr = (dma_addr_t)((current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK)
594 | ((dma_addr_t)current_bd->addr_hi << 32));
596 addr = current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK;
598 addr &= ~(ARCH_DMA_MINALIGN - 1);
600 *packetp = (uchar *)(uintptr_t)addr;
605 static int zynq_gem_free_pkt(struct udevice *dev, uchar *packet, int length)
607 struct zynq_gem_priv *priv = dev_get_priv(dev);
608 struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current];
609 struct emac_bd *first_bd;
611 if (current_bd->status & ZYNQ_GEM_RXBUF_SOF_MASK) {
612 priv->rx_first_buf = priv->rxbd_current;
614 current_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK;
615 current_bd->status = 0xF0000000; /* FIXME */
618 if (current_bd->status & ZYNQ_GEM_RXBUF_EOF_MASK) {
619 first_bd = &priv->rx_bd[priv->rx_first_buf];
620 first_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK;
621 first_bd->status = 0xF0000000;
624 if ((++priv->rxbd_current) >= RX_BUF)
625 priv->rxbd_current = 0;
630 static void zynq_gem_halt(struct udevice *dev)
632 struct zynq_gem_priv *priv = dev_get_priv(dev);
633 struct zynq_gem_regs *regs = priv->iobase;
635 clrsetbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK |
636 ZYNQ_GEM_NWCTRL_TXEN_MASK, 0);
639 __weak int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
644 static int zynq_gem_read_rom_mac(struct udevice *dev)
646 struct eth_pdata *pdata = dev_get_platdata(dev);
651 return zynq_board_read_rom_ethaddr(pdata->enetaddr);
654 static int zynq_gem_miiphy_read(struct mii_dev *bus, int addr,
657 struct zynq_gem_priv *priv = bus->priv;
661 ret = phyread(priv, addr, reg, &val);
662 debug("%s 0x%x, 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, val, ret);
666 static int zynq_gem_miiphy_write(struct mii_dev *bus, int addr, int devad,
669 struct zynq_gem_priv *priv = bus->priv;
671 debug("%s 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, value);
672 return phywrite(priv, addr, reg, value);
675 static int zynq_gem_probe(struct udevice *dev)
678 struct zynq_gem_priv *priv = dev_get_priv(dev);
681 /* Align rxbuffers to ARCH_DMA_MINALIGN */
682 priv->rxbuffers = memalign(ARCH_DMA_MINALIGN, RX_BUF * PKTSIZE_ALIGN);
683 if (!priv->rxbuffers)
686 memset(priv->rxbuffers, 0, RX_BUF * PKTSIZE_ALIGN);
688 /* Align bd_space to MMU_SECTION_SHIFT */
689 bd_space = memalign(1 << MMU_SECTION_SHIFT, BD_SPACE);
693 mmu_set_region_dcache_behaviour((phys_addr_t)bd_space,
694 BD_SPACE, DCACHE_OFF);
696 /* Initialize the bd spaces for tx and rx bd's */
697 priv->tx_bd = (struct emac_bd *)bd_space;
698 priv->rx_bd = (struct emac_bd *)((ulong)bd_space + BD_SEPRN_SPACE);
700 ret = clk_get_by_name(dev, "tx_clk", &priv->clk);
702 dev_err(dev, "failed to get clock\n");
706 priv->bus = mdio_alloc();
707 priv->bus->read = zynq_gem_miiphy_read;
708 priv->bus->write = zynq_gem_miiphy_write;
709 priv->bus->priv = priv;
711 ret = mdio_register_seq(priv->bus, dev->seq);
715 return zynq_phy_init(dev);
718 static int zynq_gem_remove(struct udevice *dev)
720 struct zynq_gem_priv *priv = dev_get_priv(dev);
723 mdio_unregister(priv->bus);
724 mdio_free(priv->bus);
729 static const struct eth_ops zynq_gem_ops = {
730 .start = zynq_gem_init,
731 .send = zynq_gem_send,
732 .recv = zynq_gem_recv,
733 .free_pkt = zynq_gem_free_pkt,
734 .stop = zynq_gem_halt,
735 .write_hwaddr = zynq_gem_setup_mac,
736 .read_rom_hwaddr = zynq_gem_read_rom_mac,
739 static int zynq_gem_ofdata_to_platdata(struct udevice *dev)
741 struct eth_pdata *pdata = dev_get_platdata(dev);
742 struct zynq_gem_priv *priv = dev_get_priv(dev);
743 struct ofnode_phandle_args phandle_args;
744 const char *phy_mode;
746 pdata->iobase = (phys_addr_t)dev_read_addr(dev);
747 priv->iobase = (struct zynq_gem_regs *)pdata->iobase;
748 /* Hardcode for now */
751 if (!dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
753 debug("phy-handle does exist %s\n", dev->name);
754 priv->phyaddr = ofnode_read_u32_default(phandle_args.node,
756 priv->phy_of_node = phandle_args.node;
757 priv->max_speed = ofnode_read_u32_default(phandle_args.node,
762 phy_mode = dev_read_prop(dev, "phy-mode", NULL);
764 pdata->phy_interface = phy_get_interface_by_name(phy_mode);
765 if (pdata->phy_interface == -1) {
766 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
769 priv->interface = pdata->phy_interface;
771 priv->int_pcs = dev_read_bool(dev, "is-internal-pcspma");
773 printf("ZYNQ GEM: %lx, phyaddr %x, interface %s\n", (ulong)priv->iobase,
774 priv->phyaddr, phy_string_for_interface(priv->interface));
779 static const struct udevice_id zynq_gem_ids[] = {
780 { .compatible = "cdns,zynqmp-gem" },
781 { .compatible = "cdns,zynq-gem" },
782 { .compatible = "cdns,gem" },
786 U_BOOT_DRIVER(zynq_gem) = {
789 .of_match = zynq_gem_ids,
790 .ofdata_to_platdata = zynq_gem_ofdata_to_platdata,
791 .probe = zynq_gem_probe,
792 .remove = zynq_gem_remove,
793 .ops = &zynq_gem_ops,
794 .priv_auto_alloc_size = sizeof(struct zynq_gem_priv),
795 .platdata_auto_alloc_size = sizeof(struct eth_pdata),