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
20 #include <asm/cache.h>
26 #include <asm/system.h>
27 #include <asm/arch/hardware.h>
28 #include <asm/arch/sys_proto.h>
29 #include <dm/device_compat.h>
30 #include <linux/err.h>
31 #include <linux/errno.h>
33 /* Bit/mask specification */
34 #define ZYNQ_GEM_PHYMNTNC_OP_MASK 0x40020000 /* operation mask bits */
35 #define ZYNQ_GEM_PHYMNTNC_OP_R_MASK 0x20000000 /* read operation */
36 #define ZYNQ_GEM_PHYMNTNC_OP_W_MASK 0x10000000 /* write operation */
37 #define ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK 23 /* Shift bits for PHYAD */
38 #define ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK 18 /* Shift bits for PHREG */
40 #define ZYNQ_GEM_RXBUF_EOF_MASK 0x00008000 /* End of frame. */
41 #define ZYNQ_GEM_RXBUF_SOF_MASK 0x00004000 /* Start of frame. */
42 #define ZYNQ_GEM_RXBUF_LEN_MASK 0x00003FFF /* Mask for length field */
44 #define ZYNQ_GEM_RXBUF_WRAP_MASK 0x00000002 /* Wrap bit, last BD */
45 #define ZYNQ_GEM_RXBUF_NEW_MASK 0x00000001 /* Used bit.. */
46 #define ZYNQ_GEM_RXBUF_ADD_MASK 0xFFFFFFFC /* Mask for address */
48 /* Wrap bit, last descriptor */
49 #define ZYNQ_GEM_TXBUF_WRAP_MASK 0x40000000
50 #define ZYNQ_GEM_TXBUF_LAST_MASK 0x00008000 /* Last buffer */
51 #define ZYNQ_GEM_TXBUF_USED_MASK 0x80000000 /* Used by Hw */
53 #define ZYNQ_GEM_NWCTRL_TXEN_MASK 0x00000008 /* Enable transmit */
54 #define ZYNQ_GEM_NWCTRL_RXEN_MASK 0x00000004 /* Enable receive */
55 #define ZYNQ_GEM_NWCTRL_MDEN_MASK 0x00000010 /* Enable MDIO port */
56 #define ZYNQ_GEM_NWCTRL_STARTTX_MASK 0x00000200 /* Start tx (tx_go) */
58 #define ZYNQ_GEM_NWCFG_SPEED100 0x00000001 /* 100 Mbps operation */
59 #define ZYNQ_GEM_NWCFG_SPEED1000 0x00000400 /* 1Gbps operation */
60 #define ZYNQ_GEM_NWCFG_FDEN 0x00000002 /* Full Duplex mode */
61 #define ZYNQ_GEM_NWCFG_FSREM 0x00020000 /* FCS removal */
62 #define ZYNQ_GEM_NWCFG_SGMII_ENBL 0x08000000 /* SGMII Enable */
63 #define ZYNQ_GEM_NWCFG_PCS_SEL 0x00000800 /* PCS select */
65 #define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x00100000 /* Div pclk by 64, max 160MHz */
67 #define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x000c0000 /* Div pclk by 48, max 120MHz */
71 # define ZYNQ_GEM_DBUS_WIDTH (1 << 21) /* 64 bit bus */
73 # define ZYNQ_GEM_DBUS_WIDTH (0 << 21) /* 32 bit bus */
76 #define ZYNQ_GEM_NWCFG_INIT (ZYNQ_GEM_DBUS_WIDTH | \
77 ZYNQ_GEM_NWCFG_FDEN | \
78 ZYNQ_GEM_NWCFG_FSREM | \
79 ZYNQ_GEM_NWCFG_MDCCLKDIV)
81 #define ZYNQ_GEM_NWSR_MDIOIDLE_MASK 0x00000004 /* PHY management idle */
83 #define ZYNQ_GEM_DMACR_BLENGTH 0x00000004 /* INCR4 AHB bursts */
84 /* Use full configured addressable space (8 Kb) */
85 #define ZYNQ_GEM_DMACR_RXSIZE 0x00000300
86 /* Use full configured addressable space (4 Kb) */
87 #define ZYNQ_GEM_DMACR_TXSIZE 0x00000400
88 /* Set with binary 00011000 to use 1536 byte(1*max length frame/buffer) */
89 #define ZYNQ_GEM_DMACR_RXBUF 0x00180000
91 #if defined(CONFIG_PHYS_64BIT)
92 # define ZYNQ_GEM_DMA_BUS_WIDTH BIT(30) /* 64 bit bus */
94 # define ZYNQ_GEM_DMA_BUS_WIDTH (0 << 30) /* 32 bit bus */
97 #define ZYNQ_GEM_DMACR_INIT (ZYNQ_GEM_DMACR_BLENGTH | \
98 ZYNQ_GEM_DMACR_RXSIZE | \
99 ZYNQ_GEM_DMACR_TXSIZE | \
100 ZYNQ_GEM_DMACR_RXBUF | \
101 ZYNQ_GEM_DMA_BUS_WIDTH)
103 #define ZYNQ_GEM_TSR_DONE 0x00000020 /* Tx done mask */
105 #define ZYNQ_GEM_PCS_CTL_ANEG_ENBL 0x1000
107 #define ZYNQ_GEM_DCFG_DBG6_DMA_64B BIT(23)
109 /* Use MII register 1 (MII status register) to detect PHY */
110 #define PHY_DETECT_REG 1
112 /* Mask used to verify certain PHY features (or register contents)
113 * in the register above:
114 * 0x1000: 10Mbps full duplex support
115 * 0x0800: 10Mbps half duplex support
116 * 0x0008: Auto-negotiation support
118 #define PHY_DETECT_MASK 0x1808
120 /* TX BD status masks */
121 #define ZYNQ_GEM_TXBUF_FRMLEN_MASK 0x000007ff
122 #define ZYNQ_GEM_TXBUF_EXHAUSTED 0x08000000
123 #define ZYNQ_GEM_TXBUF_UNDERRUN 0x10000000
125 /* Clock frequencies for different speeds */
126 #define ZYNQ_GEM_FREQUENCY_10 2500000UL
127 #define ZYNQ_GEM_FREQUENCY_100 25000000UL
128 #define ZYNQ_GEM_FREQUENCY_1000 125000000UL
130 /* Device registers */
131 struct zynq_gem_regs {
132 u32 nwctrl; /* 0x0 - Network Control reg */
133 u32 nwcfg; /* 0x4 - Network Config reg */
134 u32 nwsr; /* 0x8 - Network Status reg */
136 u32 dmacr; /* 0x10 - DMA Control reg */
137 u32 txsr; /* 0x14 - TX Status reg */
138 u32 rxqbase; /* 0x18 - RX Q Base address reg */
139 u32 txqbase; /* 0x1c - TX Q Base address reg */
140 u32 rxsr; /* 0x20 - RX Status reg */
142 u32 idr; /* 0x2c - Interrupt Disable reg */
144 u32 phymntnc; /* 0x34 - Phy Maintaince reg */
146 u32 hashl; /* 0x80 - Hash Low address reg */
147 u32 hashh; /* 0x84 - Hash High address reg */
150 u32 laddr[4][LADDR_HIGH + 1]; /* 0x8c - Specific1 addr low/high reg */
151 u32 match[4]; /* 0xa8 - Type ID1 Match reg */
154 u32 stat[STAT_SIZE]; /* 0x100 - Octects transmitted Low reg */
158 u32 dcfg6; /* 0x294 Design config reg6 */
160 u32 transmit_q1_ptr; /* 0x440 - Transmit priority queue 1 */
162 u32 receive_q1_ptr; /* 0x480 - Receive priority queue 1 */
164 u32 upper_txqbase; /* 0x4C8 - Upper tx_q base addr */
166 u32 upper_rxqbase; /* 0x4D4 - Upper rx_q base addr */
171 u32 addr; /* Next descriptor pointer */
173 #if defined(CONFIG_PHYS_64BIT)
179 /* Reduce amount of BUFs if you have limited amount of memory */
181 /* Page table entries are set to 1MB, or multiples of 1MB
182 * (not < 1MB). driver uses less bd's so use 1MB bdspace.
184 #define BD_SPACE 0x100000
185 /* BD separation space */
186 #define BD_SEPRN_SPACE (RX_BUF * sizeof(struct emac_bd))
188 /* Setup the first free TX descriptor */
189 #define TX_FREE_DESC 2
191 /* Initialized, rxbd_current, rx_first_buf must be 0 after init */
192 struct zynq_gem_priv {
193 struct emac_bd *tx_bd;
194 struct emac_bd *rx_bd;
200 struct zynq_gem_regs *iobase;
201 struct zynq_gem_regs *mdiobase;
202 phy_interface_t interface;
203 struct phy_device *phydev;
212 static int phy_setup_op(struct zynq_gem_priv *priv, u32 phy_addr, u32 regnum,
216 struct zynq_gem_regs *regs = priv->mdiobase;
219 err = wait_for_bit_le32(®s->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK,
224 /* Construct mgtcr mask for the operation */
225 mgtcr = ZYNQ_GEM_PHYMNTNC_OP_MASK | op |
226 (phy_addr << ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK) |
227 (regnum << ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK) | *data;
229 /* Write mgtcr and wait for completion */
230 writel(mgtcr, ®s->phymntnc);
232 err = wait_for_bit_le32(®s->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK,
237 if (op == ZYNQ_GEM_PHYMNTNC_OP_R_MASK)
238 *data = readl(®s->phymntnc);
243 static int phyread(struct zynq_gem_priv *priv, u32 phy_addr,
244 u32 regnum, u16 *val)
248 ret = phy_setup_op(priv, phy_addr, regnum,
249 ZYNQ_GEM_PHYMNTNC_OP_R_MASK, val);
252 debug("%s: phy_addr %d, regnum 0x%x, val 0x%x\n", __func__,
253 phy_addr, regnum, *val);
258 static int phywrite(struct zynq_gem_priv *priv, u32 phy_addr,
259 u32 regnum, u16 data)
261 debug("%s: phy_addr %d, regnum 0x%x, data 0x%x\n", __func__, phy_addr,
264 return phy_setup_op(priv, phy_addr, regnum,
265 ZYNQ_GEM_PHYMNTNC_OP_W_MASK, &data);
268 static int zynq_gem_setup_mac(struct udevice *dev)
270 u32 i, macaddrlow, macaddrhigh;
271 struct eth_pdata *pdata = dev_get_platdata(dev);
272 struct zynq_gem_priv *priv = dev_get_priv(dev);
273 struct zynq_gem_regs *regs = priv->iobase;
275 /* Set the MAC bits [31:0] in BOT */
276 macaddrlow = pdata->enetaddr[0];
277 macaddrlow |= pdata->enetaddr[1] << 8;
278 macaddrlow |= pdata->enetaddr[2] << 16;
279 macaddrlow |= pdata->enetaddr[3] << 24;
281 /* Set MAC bits [47:32] in TOP */
282 macaddrhigh = pdata->enetaddr[4];
283 macaddrhigh |= pdata->enetaddr[5] << 8;
285 for (i = 0; i < 4; i++) {
286 writel(0, ®s->laddr[i][LADDR_LOW]);
287 writel(0, ®s->laddr[i][LADDR_HIGH]);
288 /* Do not use MATCHx register */
289 writel(0, ®s->match[i]);
292 writel(macaddrlow, ®s->laddr[0][LADDR_LOW]);
293 writel(macaddrhigh, ®s->laddr[0][LADDR_HIGH]);
298 static int zynq_phy_init(struct udevice *dev)
301 struct zynq_gem_priv *priv = dev_get_priv(dev);
302 struct zynq_gem_regs *regs_mdio = priv->mdiobase;
303 const u32 supported = SUPPORTED_10baseT_Half |
304 SUPPORTED_10baseT_Full |
305 SUPPORTED_100baseT_Half |
306 SUPPORTED_100baseT_Full |
307 SUPPORTED_1000baseT_Half |
308 SUPPORTED_1000baseT_Full;
310 /* Enable only MDIO bus */
311 writel(ZYNQ_GEM_NWCTRL_MDEN_MASK, ®s_mdio->nwctrl);
313 priv->phydev = phy_connect(priv->bus, priv->phyaddr, dev,
318 if (priv->max_speed) {
319 ret = phy_set_supported(priv->phydev, priv->max_speed);
324 priv->phydev->supported &= supported | ADVERTISED_Pause |
325 ADVERTISED_Asym_Pause;
327 priv->phydev->advertising = priv->phydev->supported;
328 priv->phydev->node = priv->phy_of_node;
330 return phy_config(priv->phydev);
333 static int zynq_gem_init(struct udevice *dev)
337 unsigned long clk_rate = 0;
338 struct zynq_gem_priv *priv = dev_get_priv(dev);
339 struct zynq_gem_regs *regs = priv->iobase;
340 struct zynq_gem_regs *regs_mdio = priv->mdiobase;
341 struct emac_bd *dummy_tx_bd = &priv->tx_bd[TX_FREE_DESC];
342 struct emac_bd *dummy_rx_bd = &priv->tx_bd[TX_FREE_DESC + 2];
344 if (readl(®s->dcfg6) & ZYNQ_GEM_DCFG_DBG6_DMA_64B)
345 priv->dma_64bit = true;
347 priv->dma_64bit = false;
349 #if defined(CONFIG_PHYS_64BIT)
350 if (!priv->dma_64bit) {
351 printf("ERR: %s: Using 64-bit DMA but HW doesn't support it\n",
357 debug("WARN: %s: Not using 64-bit dma even HW supports it\n",
362 /* Disable all interrupts */
363 writel(0xFFFFFFFF, ®s->idr);
365 /* Disable the receiver & transmitter */
366 writel(0, ®s->nwctrl);
367 writel(0, ®s->txsr);
368 writel(0, ®s->rxsr);
369 writel(0, ®s->phymntnc);
371 /* Clear the Hash registers for the mac address
372 * pointed by AddressPtr
374 writel(0x0, ®s->hashl);
375 /* Write bits [63:32] in TOP */
376 writel(0x0, ®s->hashh);
378 /* Clear all counters */
379 for (i = 0; i < STAT_SIZE; i++)
380 readl(®s->stat[i]);
382 /* Setup RxBD space */
383 memset(priv->rx_bd, 0, RX_BUF * sizeof(struct emac_bd));
385 for (i = 0; i < RX_BUF; i++) {
386 priv->rx_bd[i].status = 0xF0000000;
387 priv->rx_bd[i].addr =
388 (lower_32_bits((ulong)(priv->rxbuffers)
389 + (i * PKTSIZE_ALIGN)));
390 #if defined(CONFIG_PHYS_64BIT)
391 priv->rx_bd[i].addr_hi =
392 (upper_32_bits((ulong)(priv->rxbuffers)
393 + (i * PKTSIZE_ALIGN)));
396 /* WRAP bit to last BD */
397 priv->rx_bd[--i].addr |= ZYNQ_GEM_RXBUF_WRAP_MASK;
398 /* Write RxBDs to IP */
399 writel(lower_32_bits((ulong)priv->rx_bd), ®s->rxqbase);
400 #if defined(CONFIG_PHYS_64BIT)
401 writel(upper_32_bits((ulong)priv->rx_bd), ®s->upper_rxqbase);
404 /* Setup for DMA Configuration register */
405 writel(ZYNQ_GEM_DMACR_INIT, ®s->dmacr);
407 /* Setup for Network Control register, MDIO, Rx and Tx enable */
408 setbits_le32(®s_mdio->nwctrl, ZYNQ_GEM_NWCTRL_MDEN_MASK);
410 /* Disable the second priority queue */
411 dummy_tx_bd->addr = 0;
412 #if defined(CONFIG_PHYS_64BIT)
413 dummy_tx_bd->addr_hi = 0;
415 dummy_tx_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK |
416 ZYNQ_GEM_TXBUF_LAST_MASK|
417 ZYNQ_GEM_TXBUF_USED_MASK;
419 dummy_rx_bd->addr = ZYNQ_GEM_RXBUF_WRAP_MASK |
420 ZYNQ_GEM_RXBUF_NEW_MASK;
421 #if defined(CONFIG_PHYS_64BIT)
422 dummy_rx_bd->addr_hi = 0;
424 dummy_rx_bd->status = 0;
426 writel((ulong)dummy_tx_bd, ®s->transmit_q1_ptr);
427 writel((ulong)dummy_rx_bd, ®s->receive_q1_ptr);
432 ret = phy_startup(priv->phydev);
436 if (!priv->phydev->link) {
437 printf("%s: No link.\n", priv->phydev->dev->name);
441 nwconfig = ZYNQ_GEM_NWCFG_INIT;
444 * Set SGMII enable PCS selection only if internal PCS/PMA
445 * core is used and interface is SGMII.
447 if (priv->interface == PHY_INTERFACE_MODE_SGMII &&
449 nwconfig |= ZYNQ_GEM_NWCFG_SGMII_ENBL |
450 ZYNQ_GEM_NWCFG_PCS_SEL;
452 writel(readl(®s->pcscntrl) | ZYNQ_GEM_PCS_CTL_ANEG_ENBL,
457 switch (priv->phydev->speed) {
459 writel(nwconfig | ZYNQ_GEM_NWCFG_SPEED1000,
461 clk_rate = ZYNQ_GEM_FREQUENCY_1000;
464 writel(nwconfig | ZYNQ_GEM_NWCFG_SPEED100,
466 clk_rate = ZYNQ_GEM_FREQUENCY_100;
469 clk_rate = ZYNQ_GEM_FREQUENCY_10;
473 ret = clk_set_rate(&priv->clk, clk_rate);
474 if (IS_ERR_VALUE(ret) && ret != (unsigned long)-ENOSYS) {
475 dev_err(dev, "failed to set tx clock rate\n");
479 ret = clk_enable(&priv->clk);
480 if (ret && ret != -ENOSYS) {
481 dev_err(dev, "failed to enable tx clock\n");
485 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK |
486 ZYNQ_GEM_NWCTRL_TXEN_MASK);
491 static int zynq_gem_send(struct udevice *dev, void *ptr, int len)
495 struct zynq_gem_priv *priv = dev_get_priv(dev);
496 struct zynq_gem_regs *regs = priv->iobase;
497 struct emac_bd *current_bd = &priv->tx_bd[1];
500 memset(priv->tx_bd, 0, sizeof(struct emac_bd));
502 priv->tx_bd->addr = lower_32_bits((ulong)ptr);
503 #if defined(CONFIG_PHYS_64BIT)
504 priv->tx_bd->addr_hi = upper_32_bits((ulong)ptr);
506 priv->tx_bd->status = (len & ZYNQ_GEM_TXBUF_FRMLEN_MASK) |
507 ZYNQ_GEM_TXBUF_LAST_MASK;
508 /* Dummy descriptor to mark it as the last in descriptor chain */
509 current_bd->addr = 0x0;
510 #if defined(CONFIG_PHYS_64BIT)
511 current_bd->addr_hi = 0x0;
513 current_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK |
514 ZYNQ_GEM_TXBUF_LAST_MASK|
515 ZYNQ_GEM_TXBUF_USED_MASK;
518 writel(lower_32_bits((ulong)priv->tx_bd), ®s->txqbase);
519 #if defined(CONFIG_PHYS_64BIT)
520 writel(upper_32_bits((ulong)priv->tx_bd), ®s->upper_txqbase);
524 addr &= ~(ARCH_DMA_MINALIGN - 1);
525 size = roundup(len, ARCH_DMA_MINALIGN);
526 flush_dcache_range(addr, addr + size);
530 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_STARTTX_MASK);
532 /* Read TX BD status */
533 if (priv->tx_bd->status & ZYNQ_GEM_TXBUF_EXHAUSTED)
534 printf("TX buffers exhausted in mid frame\n");
536 return wait_for_bit_le32(®s->txsr, ZYNQ_GEM_TSR_DONE,
540 /* Do not check frame_recd flag in rx_status register 0x20 - just poll BD */
541 static int zynq_gem_recv(struct udevice *dev, int flags, uchar **packetp)
545 struct zynq_gem_priv *priv = dev_get_priv(dev);
546 struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current];
548 if (!(current_bd->addr & ZYNQ_GEM_RXBUF_NEW_MASK))
551 if (!(current_bd->status &
552 (ZYNQ_GEM_RXBUF_SOF_MASK | ZYNQ_GEM_RXBUF_EOF_MASK))) {
553 printf("GEM: SOF or EOF not set for last buffer received!\n");
557 frame_len = current_bd->status & ZYNQ_GEM_RXBUF_LEN_MASK;
559 printf("%s: Zero size packet?\n", __func__);
563 #if defined(CONFIG_PHYS_64BIT)
564 addr = (dma_addr_t)((current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK)
565 | ((dma_addr_t)current_bd->addr_hi << 32));
567 addr = current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK;
569 addr &= ~(ARCH_DMA_MINALIGN - 1);
571 *packetp = (uchar *)(uintptr_t)addr;
573 invalidate_dcache_range(addr, addr + roundup(PKTSIZE_ALIGN, ARCH_DMA_MINALIGN));
579 static int zynq_gem_free_pkt(struct udevice *dev, uchar *packet, int length)
581 struct zynq_gem_priv *priv = dev_get_priv(dev);
582 struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current];
583 struct emac_bd *first_bd;
586 if (current_bd->status & ZYNQ_GEM_RXBUF_SOF_MASK) {
587 priv->rx_first_buf = priv->rxbd_current;
589 current_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK;
590 current_bd->status = 0xF0000000; /* FIXME */
593 if (current_bd->status & ZYNQ_GEM_RXBUF_EOF_MASK) {
594 first_bd = &priv->rx_bd[priv->rx_first_buf];
595 first_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK;
596 first_bd->status = 0xF0000000;
599 /* Flush the cache for the packet as well */
600 #if defined(CONFIG_PHYS_64BIT)
601 addr = (dma_addr_t)((current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK)
602 | ((dma_addr_t)current_bd->addr_hi << 32));
604 addr = current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK;
606 flush_dcache_range(addr, addr + roundup(PKTSIZE_ALIGN,
610 if ((++priv->rxbd_current) >= RX_BUF)
611 priv->rxbd_current = 0;
616 static void zynq_gem_halt(struct udevice *dev)
618 struct zynq_gem_priv *priv = dev_get_priv(dev);
619 struct zynq_gem_regs *regs = priv->iobase;
621 clrsetbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK |
622 ZYNQ_GEM_NWCTRL_TXEN_MASK, 0);
625 __weak int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
630 static int zynq_gem_read_rom_mac(struct udevice *dev)
632 struct eth_pdata *pdata = dev_get_platdata(dev);
637 return zynq_board_read_rom_ethaddr(pdata->enetaddr);
640 static int zynq_gem_miiphy_read(struct mii_dev *bus, int addr,
643 struct zynq_gem_priv *priv = bus->priv;
647 ret = phyread(priv, addr, reg, &val);
648 debug("%s 0x%x, 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, val, ret);
652 static int zynq_gem_miiphy_write(struct mii_dev *bus, int addr, int devad,
655 struct zynq_gem_priv *priv = bus->priv;
657 debug("%s 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, value);
658 return phywrite(priv, addr, reg, value);
661 static int zynq_gem_probe(struct udevice *dev)
664 struct zynq_gem_priv *priv = dev_get_priv(dev);
667 /* Align rxbuffers to ARCH_DMA_MINALIGN */
668 priv->rxbuffers = memalign(ARCH_DMA_MINALIGN, RX_BUF * PKTSIZE_ALIGN);
669 if (!priv->rxbuffers)
672 memset(priv->rxbuffers, 0, RX_BUF * PKTSIZE_ALIGN);
673 ulong addr = (ulong)priv->rxbuffers;
674 flush_dcache_range(addr, addr + roundup(RX_BUF * PKTSIZE_ALIGN, ARCH_DMA_MINALIGN));
677 /* Align bd_space to MMU_SECTION_SHIFT */
678 bd_space = memalign(1 << MMU_SECTION_SHIFT, BD_SPACE);
684 mmu_set_region_dcache_behaviour((phys_addr_t)bd_space,
685 BD_SPACE, DCACHE_OFF);
687 /* Initialize the bd spaces for tx and rx bd's */
688 priv->tx_bd = (struct emac_bd *)bd_space;
689 priv->rx_bd = (struct emac_bd *)((ulong)bd_space + BD_SEPRN_SPACE);
691 ret = clk_get_by_name(dev, "tx_clk", &priv->clk);
693 dev_err(dev, "failed to get clock\n");
697 priv->bus = mdio_alloc();
698 priv->bus->read = zynq_gem_miiphy_read;
699 priv->bus->write = zynq_gem_miiphy_write;
700 priv->bus->priv = priv;
702 ret = mdio_register_seq(priv->bus, dev->seq);
706 ret = zynq_phy_init(dev);
713 free(priv->rxbuffers);
719 static int zynq_gem_remove(struct udevice *dev)
721 struct zynq_gem_priv *priv = dev_get_priv(dev);
724 mdio_unregister(priv->bus);
725 mdio_free(priv->bus);
730 static const struct eth_ops zynq_gem_ops = {
731 .start = zynq_gem_init,
732 .send = zynq_gem_send,
733 .recv = zynq_gem_recv,
734 .free_pkt = zynq_gem_free_pkt,
735 .stop = zynq_gem_halt,
736 .write_hwaddr = zynq_gem_setup_mac,
737 .read_rom_hwaddr = zynq_gem_read_rom_mac,
740 static int zynq_gem_ofdata_to_platdata(struct udevice *dev)
742 struct eth_pdata *pdata = dev_get_platdata(dev);
743 struct zynq_gem_priv *priv = dev_get_priv(dev);
744 struct ofnode_phandle_args phandle_args;
745 const char *phy_mode;
747 pdata->iobase = (phys_addr_t)dev_read_addr(dev);
748 priv->iobase = (struct zynq_gem_regs *)pdata->iobase;
749 priv->mdiobase = priv->iobase;
750 /* Hardcode for now */
753 if (!dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
755 debug("phy-handle does exist %s\n", dev->name);
756 priv->phyaddr = ofnode_read_u32_default(phandle_args.node,
758 priv->phy_of_node = phandle_args.node;
759 priv->max_speed = ofnode_read_u32_default(phandle_args.node,
764 phy_mode = dev_read_prop(dev, "phy-mode", NULL);
766 pdata->phy_interface = phy_get_interface_by_name(phy_mode);
767 if (pdata->phy_interface == -1) {
768 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
771 priv->interface = pdata->phy_interface;
773 priv->int_pcs = dev_read_bool(dev, "is-internal-pcspma");
775 printf("\nZYNQ GEM: %lx, mdio bus %lx, phyaddr %d, interface %s\n",
776 (ulong)priv->iobase, (ulong)priv->mdiobase, priv->phyaddr,
777 phy_string_for_interface(priv->interface));
782 static const struct udevice_id zynq_gem_ids[] = {
783 { .compatible = "cdns,versal-gem" },
784 { .compatible = "cdns,zynqmp-gem" },
785 { .compatible = "cdns,zynq-gem" },
786 { .compatible = "cdns,gem" },
790 U_BOOT_DRIVER(zynq_gem) = {
793 .of_match = zynq_gem_ids,
794 .ofdata_to_platdata = zynq_gem_ofdata_to_platdata,
795 .probe = zynq_gem_probe,
796 .remove = zynq_gem_remove,
797 .ops = &zynq_gem_ops,
798 .priv_auto_alloc_size = sizeof(struct zynq_gem_priv),
799 .platdata_auto_alloc_size = sizeof(struct eth_pdata),