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 #define ZYNQ_GEM_DCFG_DBG6_DMA_64B BIT(23)
107 /* Use MII register 1 (MII status register) to detect PHY */
108 #define PHY_DETECT_REG 1
110 /* Mask used to verify certain PHY features (or register contents)
111 * in the register above:
112 * 0x1000: 10Mbps full duplex support
113 * 0x0800: 10Mbps half duplex support
114 * 0x0008: Auto-negotiation support
116 #define PHY_DETECT_MASK 0x1808
118 /* TX BD status masks */
119 #define ZYNQ_GEM_TXBUF_FRMLEN_MASK 0x000007ff
120 #define ZYNQ_GEM_TXBUF_EXHAUSTED 0x08000000
121 #define ZYNQ_GEM_TXBUF_UNDERRUN 0x10000000
123 /* Clock frequencies for different speeds */
124 #define ZYNQ_GEM_FREQUENCY_10 2500000UL
125 #define ZYNQ_GEM_FREQUENCY_100 25000000UL
126 #define ZYNQ_GEM_FREQUENCY_1000 125000000UL
128 /* Device registers */
129 struct zynq_gem_regs {
130 u32 nwctrl; /* 0x0 - Network Control reg */
131 u32 nwcfg; /* 0x4 - Network Config reg */
132 u32 nwsr; /* 0x8 - Network Status reg */
134 u32 dmacr; /* 0x10 - DMA Control reg */
135 u32 txsr; /* 0x14 - TX Status reg */
136 u32 rxqbase; /* 0x18 - RX Q Base address reg */
137 u32 txqbase; /* 0x1c - TX Q Base address reg */
138 u32 rxsr; /* 0x20 - RX Status reg */
140 u32 idr; /* 0x2c - Interrupt Disable reg */
142 u32 phymntnc; /* 0x34 - Phy Maintaince reg */
144 u32 hashl; /* 0x80 - Hash Low address reg */
145 u32 hashh; /* 0x84 - Hash High address reg */
148 u32 laddr[4][LADDR_HIGH + 1]; /* 0x8c - Specific1 addr low/high reg */
149 u32 match[4]; /* 0xa8 - Type ID1 Match reg */
152 u32 stat[STAT_SIZE]; /* 0x100 - Octects transmitted Low reg */
156 u32 dcfg6; /* 0x294 Design config reg6 */
158 u32 transmit_q1_ptr; /* 0x440 - Transmit priority queue 1 */
160 u32 receive_q1_ptr; /* 0x480 - Receive priority queue 1 */
162 u32 upper_txqbase; /* 0x4C8 - Upper tx_q base addr */
164 u32 upper_rxqbase; /* 0x4D4 - Upper rx_q base addr */
169 u32 addr; /* Next descriptor pointer */
171 #if defined(CONFIG_PHYS_64BIT)
178 /* Page table entries are set to 1MB, or multiples of 1MB
179 * (not < 1MB). driver uses less bd's so use 1MB bdspace.
181 #define BD_SPACE 0x100000
182 /* BD separation space */
183 #define BD_SEPRN_SPACE (RX_BUF * sizeof(struct emac_bd))
185 /* Setup the first free TX descriptor */
186 #define TX_FREE_DESC 2
188 /* Initialized, rxbd_current, rx_first_buf must be 0 after init */
189 struct zynq_gem_priv {
190 struct emac_bd *tx_bd;
191 struct emac_bd *rx_bd;
197 struct zynq_gem_regs *iobase;
198 phy_interface_t interface;
199 struct phy_device *phydev;
208 static int phy_setup_op(struct zynq_gem_priv *priv, u32 phy_addr, u32 regnum,
212 struct zynq_gem_regs *regs = priv->iobase;
215 err = wait_for_bit_le32(®s->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK,
220 /* Construct mgtcr mask for the operation */
221 mgtcr = ZYNQ_GEM_PHYMNTNC_OP_MASK | op |
222 (phy_addr << ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK) |
223 (regnum << ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK) | *data;
225 /* Write mgtcr and wait for completion */
226 writel(mgtcr, ®s->phymntnc);
228 err = wait_for_bit_le32(®s->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK,
233 if (op == ZYNQ_GEM_PHYMNTNC_OP_R_MASK)
234 *data = readl(®s->phymntnc);
239 static int phyread(struct zynq_gem_priv *priv, u32 phy_addr,
240 u32 regnum, u16 *val)
244 ret = phy_setup_op(priv, phy_addr, regnum,
245 ZYNQ_GEM_PHYMNTNC_OP_R_MASK, val);
248 debug("%s: phy_addr %d, regnum 0x%x, val 0x%x\n", __func__,
249 phy_addr, regnum, *val);
254 static int phywrite(struct zynq_gem_priv *priv, u32 phy_addr,
255 u32 regnum, u16 data)
257 debug("%s: phy_addr %d, regnum 0x%x, data 0x%x\n", __func__, phy_addr,
260 return phy_setup_op(priv, phy_addr, regnum,
261 ZYNQ_GEM_PHYMNTNC_OP_W_MASK, &data);
264 static int phy_detection(struct udevice *dev)
268 struct zynq_gem_priv *priv = dev->priv;
270 if (priv->phyaddr != -1) {
271 phyread(priv, priv->phyaddr, PHY_DETECT_REG, &phyreg);
272 if ((phyreg != 0xFFFF) &&
273 ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) {
274 /* Found a valid PHY address */
275 debug("Default phy address %d is valid\n",
279 debug("PHY address is not setup correctly %d\n",
285 debug("detecting phy address\n");
286 if (priv->phyaddr == -1) {
287 /* detect the PHY address */
288 for (i = 31; i >= 0; i--) {
289 phyread(priv, i, PHY_DETECT_REG, &phyreg);
290 if ((phyreg != 0xFFFF) &&
291 ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) {
292 /* Found a valid PHY address */
294 debug("Found valid phy address, %d\n", i);
299 printf("PHY is not detected\n");
303 static int zynq_gem_setup_mac(struct udevice *dev)
305 u32 i, macaddrlow, macaddrhigh;
306 struct eth_pdata *pdata = dev_get_platdata(dev);
307 struct zynq_gem_priv *priv = dev_get_priv(dev);
308 struct zynq_gem_regs *regs = priv->iobase;
310 /* Set the MAC bits [31:0] in BOT */
311 macaddrlow = pdata->enetaddr[0];
312 macaddrlow |= pdata->enetaddr[1] << 8;
313 macaddrlow |= pdata->enetaddr[2] << 16;
314 macaddrlow |= pdata->enetaddr[3] << 24;
316 /* Set MAC bits [47:32] in TOP */
317 macaddrhigh = pdata->enetaddr[4];
318 macaddrhigh |= pdata->enetaddr[5] << 8;
320 for (i = 0; i < 4; i++) {
321 writel(0, ®s->laddr[i][LADDR_LOW]);
322 writel(0, ®s->laddr[i][LADDR_HIGH]);
323 /* Do not use MATCHx register */
324 writel(0, ®s->match[i]);
327 writel(macaddrlow, ®s->laddr[0][LADDR_LOW]);
328 writel(macaddrhigh, ®s->laddr[0][LADDR_HIGH]);
333 static int zynq_phy_init(struct udevice *dev)
336 struct zynq_gem_priv *priv = dev_get_priv(dev);
337 struct zynq_gem_regs *regs = priv->iobase;
338 const u32 supported = SUPPORTED_10baseT_Half |
339 SUPPORTED_10baseT_Full |
340 SUPPORTED_100baseT_Half |
341 SUPPORTED_100baseT_Full |
342 SUPPORTED_1000baseT_Half |
343 SUPPORTED_1000baseT_Full;
345 /* Enable only MDIO bus */
346 writel(ZYNQ_GEM_NWCTRL_MDEN_MASK, ®s->nwctrl);
348 if ((priv->interface != PHY_INTERFACE_MODE_SGMII) &&
349 (priv->interface != PHY_INTERFACE_MODE_GMII)) {
350 ret = phy_detection(dev);
352 printf("GEM PHY init failed\n");
357 priv->phydev = phy_connect(priv->bus, priv->phyaddr, dev,
362 priv->phydev->supported &= supported | ADVERTISED_Pause |
363 ADVERTISED_Asym_Pause;
364 if (priv->max_speed) {
365 ret = phy_set_supported(priv->phydev, priv->max_speed);
370 priv->phydev->advertising = priv->phydev->supported;
371 priv->phydev->node = priv->phy_of_node;
373 return phy_config(priv->phydev);
376 static int zynq_gem_init(struct udevice *dev)
380 unsigned long clk_rate = 0;
381 struct zynq_gem_priv *priv = dev_get_priv(dev);
382 struct zynq_gem_regs *regs = priv->iobase;
383 struct emac_bd *dummy_tx_bd = &priv->tx_bd[TX_FREE_DESC];
384 struct emac_bd *dummy_rx_bd = &priv->tx_bd[TX_FREE_DESC + 2];
386 if (readl(®s->dcfg6) & ZYNQ_GEM_DCFG_DBG6_DMA_64B)
387 priv->dma_64bit = true;
389 priv->dma_64bit = false;
391 #if defined(CONFIG_PHYS_64BIT)
392 if (!priv->dma_64bit) {
393 printf("ERR: %s: Using 64-bit DMA but HW doesn't support it\n",
399 debug("WARN: %s: Not using 64-bit dma even HW supports it\n",
404 /* Disable all interrupts */
405 writel(0xFFFFFFFF, ®s->idr);
407 /* Disable the receiver & transmitter */
408 writel(0, ®s->nwctrl);
409 writel(0, ®s->txsr);
410 writel(0, ®s->rxsr);
411 writel(0, ®s->phymntnc);
413 /* Clear the Hash registers for the mac address
414 * pointed by AddressPtr
416 writel(0x0, ®s->hashl);
417 /* Write bits [63:32] in TOP */
418 writel(0x0, ®s->hashh);
420 /* Clear all counters */
421 for (i = 0; i < STAT_SIZE; i++)
422 readl(®s->stat[i]);
424 /* Setup RxBD space */
425 memset(priv->rx_bd, 0, RX_BUF * sizeof(struct emac_bd));
427 for (i = 0; i < RX_BUF; i++) {
428 priv->rx_bd[i].status = 0xF0000000;
429 priv->rx_bd[i].addr =
430 (lower_32_bits((ulong)(priv->rxbuffers)
431 + (i * PKTSIZE_ALIGN)));
432 #if defined(CONFIG_PHYS_64BIT)
433 priv->rx_bd[i].addr_hi =
434 (upper_32_bits((ulong)(priv->rxbuffers)
435 + (i * PKTSIZE_ALIGN)));
438 /* WRAP bit to last BD */
439 priv->rx_bd[--i].addr |= ZYNQ_GEM_RXBUF_WRAP_MASK;
440 /* Write RxBDs to IP */
441 writel(lower_32_bits((ulong)priv->rx_bd), ®s->rxqbase);
442 #if defined(CONFIG_PHYS_64BIT)
443 writel(upper_32_bits((ulong)priv->rx_bd), ®s->upper_rxqbase);
446 /* Setup for DMA Configuration register */
447 writel(ZYNQ_GEM_DMACR_INIT, ®s->dmacr);
449 /* Setup for Network Control register, MDIO, Rx and Tx enable */
450 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_MDEN_MASK);
452 /* Disable the second priority queue */
453 dummy_tx_bd->addr = 0;
454 #if defined(CONFIG_PHYS_64BIT)
455 dummy_tx_bd->addr_hi = 0;
457 dummy_tx_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK |
458 ZYNQ_GEM_TXBUF_LAST_MASK|
459 ZYNQ_GEM_TXBUF_USED_MASK;
461 dummy_rx_bd->addr = ZYNQ_GEM_RXBUF_WRAP_MASK |
462 ZYNQ_GEM_RXBUF_NEW_MASK;
463 #if defined(CONFIG_PHYS_64BIT)
464 dummy_rx_bd->addr_hi = 0;
466 dummy_rx_bd->status = 0;
468 writel((ulong)dummy_tx_bd, ®s->transmit_q1_ptr);
469 writel((ulong)dummy_rx_bd, ®s->receive_q1_ptr);
474 ret = phy_startup(priv->phydev);
478 if (!priv->phydev->link) {
479 printf("%s: No link.\n", priv->phydev->dev->name);
483 nwconfig = ZYNQ_GEM_NWCFG_INIT;
486 * Set SGMII enable PCS selection only if internal PCS/PMA
487 * core is used and interface is SGMII.
489 if (priv->interface == PHY_INTERFACE_MODE_SGMII &&
491 nwconfig |= ZYNQ_GEM_NWCFG_SGMII_ENBL |
492 ZYNQ_GEM_NWCFG_PCS_SEL;
494 writel(readl(®s->pcscntrl) | ZYNQ_GEM_PCS_CTL_ANEG_ENBL,
499 switch (priv->phydev->speed) {
501 writel(nwconfig | ZYNQ_GEM_NWCFG_SPEED1000,
503 clk_rate = ZYNQ_GEM_FREQUENCY_1000;
506 writel(nwconfig | ZYNQ_GEM_NWCFG_SPEED100,
508 clk_rate = ZYNQ_GEM_FREQUENCY_100;
511 clk_rate = ZYNQ_GEM_FREQUENCY_10;
515 #if !defined(CONFIG_ARCH_VERSAL)
516 ret = clk_set_rate(&priv->clk, clk_rate);
517 if (IS_ERR_VALUE(ret) && ret != (unsigned long)-ENOSYS) {
518 dev_err(dev, "failed to set tx clock rate\n");
522 ret = clk_enable(&priv->clk);
523 if (ret && ret != -ENOSYS) {
524 dev_err(dev, "failed to enable tx clock\n");
528 debug("requested clk_rate %ld\n", clk_rate);
531 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK |
532 ZYNQ_GEM_NWCTRL_TXEN_MASK);
537 static int zynq_gem_send(struct udevice *dev, void *ptr, int len)
541 struct zynq_gem_priv *priv = dev_get_priv(dev);
542 struct zynq_gem_regs *regs = priv->iobase;
543 struct emac_bd *current_bd = &priv->tx_bd[1];
546 memset(priv->tx_bd, 0, sizeof(struct emac_bd));
548 priv->tx_bd->addr = lower_32_bits((ulong)ptr);
549 #if defined(CONFIG_PHYS_64BIT)
550 priv->tx_bd->addr_hi = upper_32_bits((ulong)ptr);
552 priv->tx_bd->status = (len & ZYNQ_GEM_TXBUF_FRMLEN_MASK) |
553 ZYNQ_GEM_TXBUF_LAST_MASK;
554 /* Dummy descriptor to mark it as the last in descriptor chain */
555 current_bd->addr = 0x0;
556 #if defined(CONFIG_PHYS_64BIT)
557 current_bd->addr_hi = 0x0;
559 current_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK |
560 ZYNQ_GEM_TXBUF_LAST_MASK|
561 ZYNQ_GEM_TXBUF_USED_MASK;
564 writel(lower_32_bits((ulong)priv->tx_bd), ®s->txqbase);
565 #if defined(CONFIG_PHYS_64BIT)
566 writel(upper_32_bits((ulong)priv->tx_bd), ®s->upper_txqbase);
570 addr &= ~(ARCH_DMA_MINALIGN - 1);
571 size = roundup(len, ARCH_DMA_MINALIGN);
572 flush_dcache_range(addr, addr + size);
576 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_STARTTX_MASK);
578 /* Read TX BD status */
579 if (priv->tx_bd->status & ZYNQ_GEM_TXBUF_EXHAUSTED)
580 printf("TX buffers exhausted in mid frame\n");
582 return wait_for_bit_le32(®s->txsr, ZYNQ_GEM_TSR_DONE,
586 /* Do not check frame_recd flag in rx_status register 0x20 - just poll BD */
587 static int zynq_gem_recv(struct udevice *dev, int flags, uchar **packetp)
591 struct zynq_gem_priv *priv = dev_get_priv(dev);
592 struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current];
594 if (!(current_bd->addr & ZYNQ_GEM_RXBUF_NEW_MASK))
597 if (!(current_bd->status &
598 (ZYNQ_GEM_RXBUF_SOF_MASK | ZYNQ_GEM_RXBUF_EOF_MASK))) {
599 printf("GEM: SOF or EOF not set for last buffer received!\n");
603 frame_len = current_bd->status & ZYNQ_GEM_RXBUF_LEN_MASK;
605 printf("%s: Zero size packet?\n", __func__);
609 #if defined(CONFIG_PHYS_64BIT)
610 addr = (dma_addr_t)((current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK)
611 | ((dma_addr_t)current_bd->addr_hi << 32));
613 addr = current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK;
615 addr &= ~(ARCH_DMA_MINALIGN - 1);
617 *packetp = (uchar *)(uintptr_t)addr;
619 invalidate_dcache_range(addr, addr + roundup(PKTSIZE_ALIGN, ARCH_DMA_MINALIGN));
625 static int zynq_gem_free_pkt(struct udevice *dev, uchar *packet, int length)
627 struct zynq_gem_priv *priv = dev_get_priv(dev);
628 struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current];
629 struct emac_bd *first_bd;
631 if (current_bd->status & ZYNQ_GEM_RXBUF_SOF_MASK) {
632 priv->rx_first_buf = priv->rxbd_current;
634 current_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK;
635 current_bd->status = 0xF0000000; /* FIXME */
638 if (current_bd->status & ZYNQ_GEM_RXBUF_EOF_MASK) {
639 first_bd = &priv->rx_bd[priv->rx_first_buf];
640 first_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK;
641 first_bd->status = 0xF0000000;
644 if ((++priv->rxbd_current) >= RX_BUF)
645 priv->rxbd_current = 0;
650 static void zynq_gem_halt(struct udevice *dev)
652 struct zynq_gem_priv *priv = dev_get_priv(dev);
653 struct zynq_gem_regs *regs = priv->iobase;
655 clrsetbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK |
656 ZYNQ_GEM_NWCTRL_TXEN_MASK, 0);
659 __weak int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
664 static int zynq_gem_read_rom_mac(struct udevice *dev)
666 struct eth_pdata *pdata = dev_get_platdata(dev);
671 return zynq_board_read_rom_ethaddr(pdata->enetaddr);
674 static int zynq_gem_miiphy_read(struct mii_dev *bus, int addr,
677 struct zynq_gem_priv *priv = bus->priv;
681 ret = phyread(priv, addr, reg, &val);
682 debug("%s 0x%x, 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, val, ret);
686 static int zynq_gem_miiphy_write(struct mii_dev *bus, int addr, int devad,
689 struct zynq_gem_priv *priv = bus->priv;
691 debug("%s 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, value);
692 return phywrite(priv, addr, reg, value);
695 static int zynq_gem_probe(struct udevice *dev)
698 struct zynq_gem_priv *priv = dev_get_priv(dev);
701 /* Align rxbuffers to ARCH_DMA_MINALIGN */
702 priv->rxbuffers = memalign(ARCH_DMA_MINALIGN, RX_BUF * PKTSIZE_ALIGN);
703 if (!priv->rxbuffers)
706 memset(priv->rxbuffers, 0, RX_BUF * PKTSIZE_ALIGN);
707 u32 addr = (ulong)priv->rxbuffers;
708 flush_dcache_range(addr, addr + roundup(RX_BUF * PKTSIZE_ALIGN, ARCH_DMA_MINALIGN));
711 /* Align bd_space to MMU_SECTION_SHIFT */
712 bd_space = memalign(1 << MMU_SECTION_SHIFT, BD_SPACE);
716 mmu_set_region_dcache_behaviour((phys_addr_t)bd_space,
717 BD_SPACE, DCACHE_OFF);
719 /* Initialize the bd spaces for tx and rx bd's */
720 priv->tx_bd = (struct emac_bd *)bd_space;
721 priv->rx_bd = (struct emac_bd *)((ulong)bd_space + BD_SEPRN_SPACE);
723 ret = clk_get_by_name(dev, "tx_clk", &priv->clk);
725 dev_err(dev, "failed to get clock\n");
729 priv->bus = mdio_alloc();
730 priv->bus->read = zynq_gem_miiphy_read;
731 priv->bus->write = zynq_gem_miiphy_write;
732 priv->bus->priv = priv;
734 ret = mdio_register_seq(priv->bus, dev->seq);
738 return zynq_phy_init(dev);
741 static int zynq_gem_remove(struct udevice *dev)
743 struct zynq_gem_priv *priv = dev_get_priv(dev);
746 mdio_unregister(priv->bus);
747 mdio_free(priv->bus);
752 static const struct eth_ops zynq_gem_ops = {
753 .start = zynq_gem_init,
754 .send = zynq_gem_send,
755 .recv = zynq_gem_recv,
756 .free_pkt = zynq_gem_free_pkt,
757 .stop = zynq_gem_halt,
758 .write_hwaddr = zynq_gem_setup_mac,
759 .read_rom_hwaddr = zynq_gem_read_rom_mac,
762 static int zynq_gem_ofdata_to_platdata(struct udevice *dev)
764 struct eth_pdata *pdata = dev_get_platdata(dev);
765 struct zynq_gem_priv *priv = dev_get_priv(dev);
766 struct ofnode_phandle_args phandle_args;
767 const char *phy_mode;
769 pdata->iobase = (phys_addr_t)dev_read_addr(dev);
770 priv->iobase = (struct zynq_gem_regs *)pdata->iobase;
771 /* Hardcode for now */
774 if (!dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
776 debug("phy-handle does exist %s\n", dev->name);
777 priv->phyaddr = ofnode_read_u32_default(phandle_args.node,
779 priv->phy_of_node = phandle_args.node;
780 priv->max_speed = ofnode_read_u32_default(phandle_args.node,
785 phy_mode = dev_read_prop(dev, "phy-mode", NULL);
787 pdata->phy_interface = phy_get_interface_by_name(phy_mode);
788 if (pdata->phy_interface == -1) {
789 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
792 priv->interface = pdata->phy_interface;
794 priv->int_pcs = dev_read_bool(dev, "is-internal-pcspma");
796 printf("ZYNQ GEM: %lx, phyaddr %x, interface %s\n", (ulong)priv->iobase,
797 priv->phyaddr, phy_string_for_interface(priv->interface));
802 static const struct udevice_id zynq_gem_ids[] = {
803 { .compatible = "cdns,zynqmp-gem" },
804 { .compatible = "cdns,zynq-gem" },
805 { .compatible = "cdns,gem" },
809 U_BOOT_DRIVER(zynq_gem) = {
812 .of_match = zynq_gem_ids,
813 .ofdata_to_platdata = zynq_gem_ofdata_to_platdata,
814 .probe = zynq_gem_probe,
815 .remove = zynq_gem_remove,
816 .ops = &zynq_gem_ops,
817 .priv_auto_alloc_size = sizeof(struct zynq_gem_priv),
818 .platdata_auto_alloc_size = sizeof(struct eth_pdata),