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
25 #include <asm/system.h>
26 #include <asm/arch/hardware.h>
27 #include <asm/arch/sys_proto.h>
28 #include <linux/errno.h>
30 /* Bit/mask specification */
31 #define ZYNQ_GEM_PHYMNTNC_OP_MASK 0x40020000 /* operation mask bits */
32 #define ZYNQ_GEM_PHYMNTNC_OP_R_MASK 0x20000000 /* read operation */
33 #define ZYNQ_GEM_PHYMNTNC_OP_W_MASK 0x10000000 /* write operation */
34 #define ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK 23 /* Shift bits for PHYAD */
35 #define ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK 18 /* Shift bits for PHREG */
37 #define ZYNQ_GEM_RXBUF_EOF_MASK 0x00008000 /* End of frame. */
38 #define ZYNQ_GEM_RXBUF_SOF_MASK 0x00004000 /* Start of frame. */
39 #define ZYNQ_GEM_RXBUF_LEN_MASK 0x00003FFF /* Mask for length field */
41 #define ZYNQ_GEM_RXBUF_WRAP_MASK 0x00000002 /* Wrap bit, last BD */
42 #define ZYNQ_GEM_RXBUF_NEW_MASK 0x00000001 /* Used bit.. */
43 #define ZYNQ_GEM_RXBUF_ADD_MASK 0xFFFFFFFC /* Mask for address */
45 /* Wrap bit, last descriptor */
46 #define ZYNQ_GEM_TXBUF_WRAP_MASK 0x40000000
47 #define ZYNQ_GEM_TXBUF_LAST_MASK 0x00008000 /* Last buffer */
48 #define ZYNQ_GEM_TXBUF_USED_MASK 0x80000000 /* Used by Hw */
50 #define ZYNQ_GEM_NWCTRL_TXEN_MASK 0x00000008 /* Enable transmit */
51 #define ZYNQ_GEM_NWCTRL_RXEN_MASK 0x00000004 /* Enable receive */
52 #define ZYNQ_GEM_NWCTRL_MDEN_MASK 0x00000010 /* Enable MDIO port */
53 #define ZYNQ_GEM_NWCTRL_STARTTX_MASK 0x00000200 /* Start tx (tx_go) */
55 #define ZYNQ_GEM_NWCFG_SPEED100 0x00000001 /* 100 Mbps operation */
56 #define ZYNQ_GEM_NWCFG_SPEED1000 0x00000400 /* 1Gbps operation */
57 #define ZYNQ_GEM_NWCFG_FDEN 0x00000002 /* Full Duplex mode */
58 #define ZYNQ_GEM_NWCFG_FSREM 0x00020000 /* FCS removal */
59 #define ZYNQ_GEM_NWCFG_SGMII_ENBL 0x08000000 /* SGMII Enable */
60 #define ZYNQ_GEM_NWCFG_PCS_SEL 0x00000800 /* PCS select */
62 #define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x00100000 /* Div pclk by 64, max 160MHz */
64 #define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x000c0000 /* Div pclk by 48, max 120MHz */
68 # define ZYNQ_GEM_DBUS_WIDTH (1 << 21) /* 64 bit bus */
70 # define ZYNQ_GEM_DBUS_WIDTH (0 << 21) /* 32 bit bus */
73 #define ZYNQ_GEM_NWCFG_INIT (ZYNQ_GEM_DBUS_WIDTH | \
74 ZYNQ_GEM_NWCFG_FDEN | \
75 ZYNQ_GEM_NWCFG_FSREM | \
76 ZYNQ_GEM_NWCFG_MDCCLKDIV)
78 #define ZYNQ_GEM_NWSR_MDIOIDLE_MASK 0x00000004 /* PHY management idle */
80 #define ZYNQ_GEM_DMACR_BLENGTH 0x00000004 /* INCR4 AHB bursts */
81 /* Use full configured addressable space (8 Kb) */
82 #define ZYNQ_GEM_DMACR_RXSIZE 0x00000300
83 /* Use full configured addressable space (4 Kb) */
84 #define ZYNQ_GEM_DMACR_TXSIZE 0x00000400
85 /* Set with binary 00011000 to use 1536 byte(1*max length frame/buffer) */
86 #define ZYNQ_GEM_DMACR_RXBUF 0x00180000
88 #if defined(CONFIG_PHYS_64BIT)
89 # define ZYNQ_GEM_DMA_BUS_WIDTH BIT(30) /* 64 bit bus */
91 # define ZYNQ_GEM_DMA_BUS_WIDTH (0 << 30) /* 32 bit bus */
94 #define ZYNQ_GEM_DMACR_INIT (ZYNQ_GEM_DMACR_BLENGTH | \
95 ZYNQ_GEM_DMACR_RXSIZE | \
96 ZYNQ_GEM_DMACR_TXSIZE | \
97 ZYNQ_GEM_DMACR_RXBUF | \
98 ZYNQ_GEM_DMA_BUS_WIDTH)
100 #define ZYNQ_GEM_TSR_DONE 0x00000020 /* Tx done mask */
102 #define ZYNQ_GEM_PCS_CTL_ANEG_ENBL 0x1000
104 #define ZYNQ_GEM_DCFG_DBG6_DMA_64B BIT(23)
106 /* Use MII register 1 (MII status register) to detect PHY */
107 #define PHY_DETECT_REG 1
109 /* Mask used to verify certain PHY features (or register contents)
110 * in the register above:
111 * 0x1000: 10Mbps full duplex support
112 * 0x0800: 10Mbps half duplex support
113 * 0x0008: Auto-negotiation support
115 #define PHY_DETECT_MASK 0x1808
117 /* TX BD status masks */
118 #define ZYNQ_GEM_TXBUF_FRMLEN_MASK 0x000007ff
119 #define ZYNQ_GEM_TXBUF_EXHAUSTED 0x08000000
120 #define ZYNQ_GEM_TXBUF_UNDERRUN 0x10000000
122 /* Clock frequencies for different speeds */
123 #define ZYNQ_GEM_FREQUENCY_10 2500000UL
124 #define ZYNQ_GEM_FREQUENCY_100 25000000UL
125 #define ZYNQ_GEM_FREQUENCY_1000 125000000UL
127 /* Device registers */
128 struct zynq_gem_regs {
129 u32 nwctrl; /* 0x0 - Network Control reg */
130 u32 nwcfg; /* 0x4 - Network Config reg */
131 u32 nwsr; /* 0x8 - Network Status reg */
133 u32 dmacr; /* 0x10 - DMA Control reg */
134 u32 txsr; /* 0x14 - TX Status reg */
135 u32 rxqbase; /* 0x18 - RX Q Base address reg */
136 u32 txqbase; /* 0x1c - TX Q Base address reg */
137 u32 rxsr; /* 0x20 - RX Status reg */
139 u32 idr; /* 0x2c - Interrupt Disable reg */
141 u32 phymntnc; /* 0x34 - Phy Maintaince reg */
143 u32 hashl; /* 0x80 - Hash Low address reg */
144 u32 hashh; /* 0x84 - Hash High address reg */
147 u32 laddr[4][LADDR_HIGH + 1]; /* 0x8c - Specific1 addr low/high reg */
148 u32 match[4]; /* 0xa8 - Type ID1 Match reg */
151 u32 stat[STAT_SIZE]; /* 0x100 - Octects transmitted Low reg */
155 u32 dcfg6; /* 0x294 Design config reg6 */
157 u32 transmit_q1_ptr; /* 0x440 - Transmit priority queue 1 */
159 u32 receive_q1_ptr; /* 0x480 - Receive priority queue 1 */
161 u32 upper_txqbase; /* 0x4C8 - Upper tx_q base addr */
163 u32 upper_rxqbase; /* 0x4D4 - Upper rx_q base addr */
168 u32 addr; /* Next descriptor pointer */
170 #if defined(CONFIG_PHYS_64BIT)
177 /* Page table entries are set to 1MB, or multiples of 1MB
178 * (not < 1MB). driver uses less bd's so use 1MB bdspace.
180 #define BD_SPACE 0x100000
181 /* BD separation space */
182 #define BD_SEPRN_SPACE (RX_BUF * sizeof(struct emac_bd))
184 /* Setup the first free TX descriptor */
185 #define TX_FREE_DESC 2
187 /* Initialized, rxbd_current, rx_first_buf must be 0 after init */
188 struct zynq_gem_priv {
189 struct emac_bd *tx_bd;
190 struct emac_bd *rx_bd;
196 struct zynq_gem_regs *iobase;
197 phy_interface_t interface;
198 struct phy_device *phydev;
207 static int phy_setup_op(struct zynq_gem_priv *priv, u32 phy_addr, u32 regnum,
211 struct zynq_gem_regs *regs = priv->iobase;
214 err = wait_for_bit_le32(®s->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK,
219 /* Construct mgtcr mask for the operation */
220 mgtcr = ZYNQ_GEM_PHYMNTNC_OP_MASK | op |
221 (phy_addr << ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK) |
222 (regnum << ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK) | *data;
224 /* Write mgtcr and wait for completion */
225 writel(mgtcr, ®s->phymntnc);
227 err = wait_for_bit_le32(®s->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK,
232 if (op == ZYNQ_GEM_PHYMNTNC_OP_R_MASK)
233 *data = readl(®s->phymntnc);
238 static int phyread(struct zynq_gem_priv *priv, u32 phy_addr,
239 u32 regnum, u16 *val)
243 ret = phy_setup_op(priv, phy_addr, regnum,
244 ZYNQ_GEM_PHYMNTNC_OP_R_MASK, val);
247 debug("%s: phy_addr %d, regnum 0x%x, val 0x%x\n", __func__,
248 phy_addr, regnum, *val);
253 static int phywrite(struct zynq_gem_priv *priv, u32 phy_addr,
254 u32 regnum, u16 data)
256 debug("%s: phy_addr %d, regnum 0x%x, data 0x%x\n", __func__, phy_addr,
259 return phy_setup_op(priv, phy_addr, regnum,
260 ZYNQ_GEM_PHYMNTNC_OP_W_MASK, &data);
263 static int zynq_gem_setup_mac(struct udevice *dev)
265 u32 i, macaddrlow, macaddrhigh;
266 struct eth_pdata *pdata = dev_get_platdata(dev);
267 struct zynq_gem_priv *priv = dev_get_priv(dev);
268 struct zynq_gem_regs *regs = priv->iobase;
270 /* Set the MAC bits [31:0] in BOT */
271 macaddrlow = pdata->enetaddr[0];
272 macaddrlow |= pdata->enetaddr[1] << 8;
273 macaddrlow |= pdata->enetaddr[2] << 16;
274 macaddrlow |= pdata->enetaddr[3] << 24;
276 /* Set MAC bits [47:32] in TOP */
277 macaddrhigh = pdata->enetaddr[4];
278 macaddrhigh |= pdata->enetaddr[5] << 8;
280 for (i = 0; i < 4; i++) {
281 writel(0, ®s->laddr[i][LADDR_LOW]);
282 writel(0, ®s->laddr[i][LADDR_HIGH]);
283 /* Do not use MATCHx register */
284 writel(0, ®s->match[i]);
287 writel(macaddrlow, ®s->laddr[0][LADDR_LOW]);
288 writel(macaddrhigh, ®s->laddr[0][LADDR_HIGH]);
293 static int zynq_phy_init(struct udevice *dev)
296 struct zynq_gem_priv *priv = dev_get_priv(dev);
297 struct zynq_gem_regs *regs = priv->iobase;
298 const u32 supported = SUPPORTED_10baseT_Half |
299 SUPPORTED_10baseT_Full |
300 SUPPORTED_100baseT_Half |
301 SUPPORTED_100baseT_Full |
302 SUPPORTED_1000baseT_Half |
303 SUPPORTED_1000baseT_Full;
305 /* Enable only MDIO bus */
306 writel(ZYNQ_GEM_NWCTRL_MDEN_MASK, ®s->nwctrl);
308 priv->phydev = phy_connect(priv->bus, priv->phyaddr, dev,
313 if (priv->max_speed) {
314 ret = phy_set_supported(priv->phydev, priv->max_speed);
319 priv->phydev->supported &= supported | ADVERTISED_Pause |
320 ADVERTISED_Asym_Pause;
322 priv->phydev->advertising = priv->phydev->supported;
323 priv->phydev->node = priv->phy_of_node;
325 return phy_config(priv->phydev);
328 static int zynq_gem_init(struct udevice *dev)
332 unsigned long clk_rate = 0;
333 struct zynq_gem_priv *priv = dev_get_priv(dev);
334 struct zynq_gem_regs *regs = priv->iobase;
335 struct emac_bd *dummy_tx_bd = &priv->tx_bd[TX_FREE_DESC];
336 struct emac_bd *dummy_rx_bd = &priv->tx_bd[TX_FREE_DESC + 2];
338 if (readl(®s->dcfg6) & ZYNQ_GEM_DCFG_DBG6_DMA_64B)
339 priv->dma_64bit = true;
341 priv->dma_64bit = false;
343 #if defined(CONFIG_PHYS_64BIT)
344 if (!priv->dma_64bit) {
345 printf("ERR: %s: Using 64-bit DMA but HW doesn't support it\n",
351 debug("WARN: %s: Not using 64-bit dma even HW supports it\n",
356 /* Disable all interrupts */
357 writel(0xFFFFFFFF, ®s->idr);
359 /* Disable the receiver & transmitter */
360 writel(0, ®s->nwctrl);
361 writel(0, ®s->txsr);
362 writel(0, ®s->rxsr);
363 writel(0, ®s->phymntnc);
365 /* Clear the Hash registers for the mac address
366 * pointed by AddressPtr
368 writel(0x0, ®s->hashl);
369 /* Write bits [63:32] in TOP */
370 writel(0x0, ®s->hashh);
372 /* Clear all counters */
373 for (i = 0; i < STAT_SIZE; i++)
374 readl(®s->stat[i]);
376 /* Setup RxBD space */
377 memset(priv->rx_bd, 0, RX_BUF * sizeof(struct emac_bd));
379 for (i = 0; i < RX_BUF; i++) {
380 priv->rx_bd[i].status = 0xF0000000;
381 priv->rx_bd[i].addr =
382 (lower_32_bits((ulong)(priv->rxbuffers)
383 + (i * PKTSIZE_ALIGN)));
384 #if defined(CONFIG_PHYS_64BIT)
385 priv->rx_bd[i].addr_hi =
386 (upper_32_bits((ulong)(priv->rxbuffers)
387 + (i * PKTSIZE_ALIGN)));
390 /* WRAP bit to last BD */
391 priv->rx_bd[--i].addr |= ZYNQ_GEM_RXBUF_WRAP_MASK;
392 /* Write RxBDs to IP */
393 writel(lower_32_bits((ulong)priv->rx_bd), ®s->rxqbase);
394 #if defined(CONFIG_PHYS_64BIT)
395 writel(upper_32_bits((ulong)priv->rx_bd), ®s->upper_rxqbase);
398 /* Setup for DMA Configuration register */
399 writel(ZYNQ_GEM_DMACR_INIT, ®s->dmacr);
401 /* Setup for Network Control register, MDIO, Rx and Tx enable */
402 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_MDEN_MASK);
404 /* Disable the second priority queue */
405 dummy_tx_bd->addr = 0;
406 #if defined(CONFIG_PHYS_64BIT)
407 dummy_tx_bd->addr_hi = 0;
409 dummy_tx_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK |
410 ZYNQ_GEM_TXBUF_LAST_MASK|
411 ZYNQ_GEM_TXBUF_USED_MASK;
413 dummy_rx_bd->addr = ZYNQ_GEM_RXBUF_WRAP_MASK |
414 ZYNQ_GEM_RXBUF_NEW_MASK;
415 #if defined(CONFIG_PHYS_64BIT)
416 dummy_rx_bd->addr_hi = 0;
418 dummy_rx_bd->status = 0;
420 writel((ulong)dummy_tx_bd, ®s->transmit_q1_ptr);
421 writel((ulong)dummy_rx_bd, ®s->receive_q1_ptr);
426 ret = phy_startup(priv->phydev);
430 if (!priv->phydev->link) {
431 printf("%s: No link.\n", priv->phydev->dev->name);
435 nwconfig = ZYNQ_GEM_NWCFG_INIT;
438 * Set SGMII enable PCS selection only if internal PCS/PMA
439 * core is used and interface is SGMII.
441 if (priv->interface == PHY_INTERFACE_MODE_SGMII &&
443 nwconfig |= ZYNQ_GEM_NWCFG_SGMII_ENBL |
444 ZYNQ_GEM_NWCFG_PCS_SEL;
446 writel(readl(®s->pcscntrl) | ZYNQ_GEM_PCS_CTL_ANEG_ENBL,
451 switch (priv->phydev->speed) {
453 writel(nwconfig | ZYNQ_GEM_NWCFG_SPEED1000,
455 clk_rate = ZYNQ_GEM_FREQUENCY_1000;
458 writel(nwconfig | ZYNQ_GEM_NWCFG_SPEED100,
460 clk_rate = ZYNQ_GEM_FREQUENCY_100;
463 clk_rate = ZYNQ_GEM_FREQUENCY_10;
467 ret = clk_set_rate(&priv->clk, clk_rate);
468 if (IS_ERR_VALUE(ret) && ret != (unsigned long)-ENOSYS) {
469 dev_err(dev, "failed to set tx clock rate\n");
473 ret = clk_enable(&priv->clk);
474 if (ret && ret != -ENOSYS) {
475 dev_err(dev, "failed to enable tx clock\n");
479 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK |
480 ZYNQ_GEM_NWCTRL_TXEN_MASK);
485 static int zynq_gem_send(struct udevice *dev, void *ptr, int len)
489 struct zynq_gem_priv *priv = dev_get_priv(dev);
490 struct zynq_gem_regs *regs = priv->iobase;
491 struct emac_bd *current_bd = &priv->tx_bd[1];
494 memset(priv->tx_bd, 0, sizeof(struct emac_bd));
496 priv->tx_bd->addr = lower_32_bits((ulong)ptr);
497 #if defined(CONFIG_PHYS_64BIT)
498 priv->tx_bd->addr_hi = upper_32_bits((ulong)ptr);
500 priv->tx_bd->status = (len & ZYNQ_GEM_TXBUF_FRMLEN_MASK) |
501 ZYNQ_GEM_TXBUF_LAST_MASK;
502 /* Dummy descriptor to mark it as the last in descriptor chain */
503 current_bd->addr = 0x0;
504 #if defined(CONFIG_PHYS_64BIT)
505 current_bd->addr_hi = 0x0;
507 current_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK |
508 ZYNQ_GEM_TXBUF_LAST_MASK|
509 ZYNQ_GEM_TXBUF_USED_MASK;
512 writel(lower_32_bits((ulong)priv->tx_bd), ®s->txqbase);
513 #if defined(CONFIG_PHYS_64BIT)
514 writel(upper_32_bits((ulong)priv->tx_bd), ®s->upper_txqbase);
518 addr &= ~(ARCH_DMA_MINALIGN - 1);
519 size = roundup(len, ARCH_DMA_MINALIGN);
520 flush_dcache_range(addr, addr + size);
524 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_STARTTX_MASK);
526 /* Read TX BD status */
527 if (priv->tx_bd->status & ZYNQ_GEM_TXBUF_EXHAUSTED)
528 printf("TX buffers exhausted in mid frame\n");
530 return wait_for_bit_le32(®s->txsr, ZYNQ_GEM_TSR_DONE,
534 /* Do not check frame_recd flag in rx_status register 0x20 - just poll BD */
535 static int zynq_gem_recv(struct udevice *dev, int flags, uchar **packetp)
539 struct zynq_gem_priv *priv = dev_get_priv(dev);
540 struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current];
542 if (!(current_bd->addr & ZYNQ_GEM_RXBUF_NEW_MASK))
545 if (!(current_bd->status &
546 (ZYNQ_GEM_RXBUF_SOF_MASK | ZYNQ_GEM_RXBUF_EOF_MASK))) {
547 printf("GEM: SOF or EOF not set for last buffer received!\n");
551 frame_len = current_bd->status & ZYNQ_GEM_RXBUF_LEN_MASK;
553 printf("%s: Zero size packet?\n", __func__);
557 #if defined(CONFIG_PHYS_64BIT)
558 addr = (dma_addr_t)((current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK)
559 | ((dma_addr_t)current_bd->addr_hi << 32));
561 addr = current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK;
563 addr &= ~(ARCH_DMA_MINALIGN - 1);
565 *packetp = (uchar *)(uintptr_t)addr;
567 invalidate_dcache_range(addr, addr + roundup(PKTSIZE_ALIGN, ARCH_DMA_MINALIGN));
573 static int zynq_gem_free_pkt(struct udevice *dev, uchar *packet, int length)
575 struct zynq_gem_priv *priv = dev_get_priv(dev);
576 struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current];
577 struct emac_bd *first_bd;
579 if (current_bd->status & ZYNQ_GEM_RXBUF_SOF_MASK) {
580 priv->rx_first_buf = priv->rxbd_current;
582 current_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK;
583 current_bd->status = 0xF0000000; /* FIXME */
586 if (current_bd->status & ZYNQ_GEM_RXBUF_EOF_MASK) {
587 first_bd = &priv->rx_bd[priv->rx_first_buf];
588 first_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK;
589 first_bd->status = 0xF0000000;
592 if ((++priv->rxbd_current) >= RX_BUF)
593 priv->rxbd_current = 0;
598 static void zynq_gem_halt(struct udevice *dev)
600 struct zynq_gem_priv *priv = dev_get_priv(dev);
601 struct zynq_gem_regs *regs = priv->iobase;
603 clrsetbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK |
604 ZYNQ_GEM_NWCTRL_TXEN_MASK, 0);
607 __weak int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
612 static int zynq_gem_read_rom_mac(struct udevice *dev)
614 struct eth_pdata *pdata = dev_get_platdata(dev);
619 return zynq_board_read_rom_ethaddr(pdata->enetaddr);
622 static int zynq_gem_miiphy_read(struct mii_dev *bus, int addr,
625 struct zynq_gem_priv *priv = bus->priv;
629 ret = phyread(priv, addr, reg, &val);
630 debug("%s 0x%x, 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, val, ret);
634 static int zynq_gem_miiphy_write(struct mii_dev *bus, int addr, int devad,
637 struct zynq_gem_priv *priv = bus->priv;
639 debug("%s 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, value);
640 return phywrite(priv, addr, reg, value);
643 static int zynq_gem_probe(struct udevice *dev)
646 struct zynq_gem_priv *priv = dev_get_priv(dev);
649 /* Align rxbuffers to ARCH_DMA_MINALIGN */
650 priv->rxbuffers = memalign(ARCH_DMA_MINALIGN, RX_BUF * PKTSIZE_ALIGN);
651 if (!priv->rxbuffers)
654 memset(priv->rxbuffers, 0, RX_BUF * PKTSIZE_ALIGN);
655 u32 addr = (ulong)priv->rxbuffers;
656 flush_dcache_range(addr, addr + roundup(RX_BUF * PKTSIZE_ALIGN, ARCH_DMA_MINALIGN));
659 /* Align bd_space to MMU_SECTION_SHIFT */
660 bd_space = memalign(1 << MMU_SECTION_SHIFT, BD_SPACE);
664 mmu_set_region_dcache_behaviour((phys_addr_t)bd_space,
665 BD_SPACE, DCACHE_OFF);
667 /* Initialize the bd spaces for tx and rx bd's */
668 priv->tx_bd = (struct emac_bd *)bd_space;
669 priv->rx_bd = (struct emac_bd *)((ulong)bd_space + BD_SEPRN_SPACE);
671 ret = clk_get_by_name(dev, "tx_clk", &priv->clk);
673 dev_err(dev, "failed to get clock\n");
677 priv->bus = mdio_alloc();
678 priv->bus->read = zynq_gem_miiphy_read;
679 priv->bus->write = zynq_gem_miiphy_write;
680 priv->bus->priv = priv;
682 ret = mdio_register_seq(priv->bus, dev->seq);
686 return zynq_phy_init(dev);
689 static int zynq_gem_remove(struct udevice *dev)
691 struct zynq_gem_priv *priv = dev_get_priv(dev);
694 mdio_unregister(priv->bus);
695 mdio_free(priv->bus);
700 static const struct eth_ops zynq_gem_ops = {
701 .start = zynq_gem_init,
702 .send = zynq_gem_send,
703 .recv = zynq_gem_recv,
704 .free_pkt = zynq_gem_free_pkt,
705 .stop = zynq_gem_halt,
706 .write_hwaddr = zynq_gem_setup_mac,
707 .read_rom_hwaddr = zynq_gem_read_rom_mac,
710 static int zynq_gem_ofdata_to_platdata(struct udevice *dev)
712 struct eth_pdata *pdata = dev_get_platdata(dev);
713 struct zynq_gem_priv *priv = dev_get_priv(dev);
714 struct ofnode_phandle_args phandle_args;
715 const char *phy_mode;
717 pdata->iobase = (phys_addr_t)dev_read_addr(dev);
718 priv->iobase = (struct zynq_gem_regs *)pdata->iobase;
719 /* Hardcode for now */
722 if (!dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
724 debug("phy-handle does exist %s\n", dev->name);
725 priv->phyaddr = ofnode_read_u32_default(phandle_args.node,
727 priv->phy_of_node = phandle_args.node;
728 priv->max_speed = ofnode_read_u32_default(phandle_args.node,
733 phy_mode = dev_read_prop(dev, "phy-mode", NULL);
735 pdata->phy_interface = phy_get_interface_by_name(phy_mode);
736 if (pdata->phy_interface == -1) {
737 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
740 priv->interface = pdata->phy_interface;
742 priv->int_pcs = dev_read_bool(dev, "is-internal-pcspma");
744 printf("ZYNQ GEM: %lx, phyaddr %x, interface %s\n", (ulong)priv->iobase,
745 priv->phyaddr, phy_string_for_interface(priv->interface));
750 static const struct udevice_id zynq_gem_ids[] = {
751 { .compatible = "cdns,versal-gem" },
752 { .compatible = "cdns,zynqmp-gem" },
753 { .compatible = "cdns,zynq-gem" },
754 { .compatible = "cdns,gem" },
758 U_BOOT_DRIVER(zynq_gem) = {
761 .of_match = zynq_gem_ids,
762 .ofdata_to_platdata = zynq_gem_ofdata_to_platdata,
763 .probe = zynq_gem_probe,
764 .remove = zynq_gem_remove,
765 .ops = &zynq_gem_ops,
766 .priv_auto_alloc_size = sizeof(struct zynq_gem_priv),
767 .platdata_auto_alloc_size = sizeof(struct eth_pdata),