2 * Copyright (C) 2005-2006 Atmel Corporation
4 * SPDX-License-Identifier: GPL-2.0+
11 * The u-boot networking stack is a little weird. It seems like the
12 * networking core allocates receive buffers up front without any
13 * regard to the hardware that's supposed to actually receive those
16 * The MACB receives packets into 128-byte receive buffers, so the
17 * buffers allocated by the core isn't very practical to use. We'll
18 * allocate our own, but we need one such buffer in case a packet
19 * wraps around the DMA ring so that we have to copy it.
21 * Therefore, define CONFIG_SYS_RX_ETH_BUFFER to 1 in the board-specific
22 * configuration header. This way, the core allocates one RX buffer
23 * and one TX buffer, each of which can hold a ethernet packet of
26 * For some reason, the networking core unconditionally specifies a
27 * 32-byte packet "alignment" (which really should be called
28 * "padding"). MACB shouldn't need that, but we'll refrain from any
29 * core modifications here...
39 #include <linux/mii.h>
41 #include <asm/dma-mapping.h>
42 #include <asm/arch/clk.h>
43 #include <linux/errno.h>
47 DECLARE_GLOBAL_DATA_PTR;
49 #define MACB_RX_BUFFER_SIZE 4096
50 #define MACB_RX_RING_SIZE (MACB_RX_BUFFER_SIZE / 128)
51 #define MACB_TX_RING_SIZE 16
52 #define MACB_TX_TIMEOUT 1000
53 #define MACB_AUTONEG_TIMEOUT 5000000
55 struct macb_dma_desc {
60 #define DMA_DESC_BYTES(n) (n * sizeof(struct macb_dma_desc))
61 #define MACB_TX_DMA_DESC_SIZE (DMA_DESC_BYTES(MACB_TX_RING_SIZE))
62 #define MACB_RX_DMA_DESC_SIZE (DMA_DESC_BYTES(MACB_RX_RING_SIZE))
63 #define MACB_TX_DUMMY_DMA_DESC_SIZE (DMA_DESC_BYTES(1))
65 #define RXADDR_USED 0x00000001
66 #define RXADDR_WRAP 0x00000002
68 #define RXBUF_FRMLEN_MASK 0x00000fff
69 #define RXBUF_FRAME_START 0x00004000
70 #define RXBUF_FRAME_END 0x00008000
71 #define RXBUF_TYPEID_MATCH 0x00400000
72 #define RXBUF_ADDR4_MATCH 0x00800000
73 #define RXBUF_ADDR3_MATCH 0x01000000
74 #define RXBUF_ADDR2_MATCH 0x02000000
75 #define RXBUF_ADDR1_MATCH 0x04000000
76 #define RXBUF_BROADCAST 0x80000000
78 #define TXBUF_FRMLEN_MASK 0x000007ff
79 #define TXBUF_FRAME_END 0x00008000
80 #define TXBUF_NOCRC 0x00010000
81 #define TXBUF_EXHAUSTED 0x08000000
82 #define TXBUF_UNDERRUN 0x10000000
83 #define TXBUF_MAXRETRY 0x20000000
84 #define TXBUF_WRAP 0x40000000
85 #define TXBUF_USED 0x80000000
93 unsigned int next_rx_tail;
98 struct macb_dma_desc *rx_ring;
99 struct macb_dma_desc *tx_ring;
101 unsigned long rx_buffer_dma;
102 unsigned long rx_ring_dma;
103 unsigned long tx_ring_dma;
105 struct macb_dma_desc *dummy_desc;
106 unsigned long dummy_desc_dma;
108 const struct device *dev;
109 #ifndef CONFIG_DM_ETH
110 struct eth_device netdev;
112 unsigned short phy_addr;
115 struct phy_device *phydev;
120 unsigned long pclk_rate;
122 phy_interface_t phy_interface;
125 #ifndef CONFIG_DM_ETH
126 #define to_macb(_nd) container_of(_nd, struct macb_device, netdev)
129 static int macb_is_gem(struct macb_device *macb)
131 return MACB_BFEXT(IDNUM, macb_readl(macb, MID)) == 0x2;
134 #ifndef cpu_is_sama5d2
135 #define cpu_is_sama5d2() 0
138 #ifndef cpu_is_sama5d4
139 #define cpu_is_sama5d4() 0
142 static int gem_is_gigabit_capable(struct macb_device *macb)
145 * The GEM controllers embedded in SAMA5D2 and SAMA5D4 are
146 * configured to support only 10/100.
148 return macb_is_gem(macb) && !cpu_is_sama5d2() && !cpu_is_sama5d4();
151 static void macb_mdio_write(struct macb_device *macb, u8 reg, u16 value)
153 unsigned long netctl;
154 unsigned long netstat;
157 netctl = macb_readl(macb, NCR);
158 netctl |= MACB_BIT(MPE);
159 macb_writel(macb, NCR, netctl);
161 frame = (MACB_BF(SOF, 1)
163 | MACB_BF(PHYA, macb->phy_addr)
166 | MACB_BF(DATA, value));
167 macb_writel(macb, MAN, frame);
170 netstat = macb_readl(macb, NSR);
171 } while (!(netstat & MACB_BIT(IDLE)));
173 netctl = macb_readl(macb, NCR);
174 netctl &= ~MACB_BIT(MPE);
175 macb_writel(macb, NCR, netctl);
178 static u16 macb_mdio_read(struct macb_device *macb, u8 reg)
180 unsigned long netctl;
181 unsigned long netstat;
184 netctl = macb_readl(macb, NCR);
185 netctl |= MACB_BIT(MPE);
186 macb_writel(macb, NCR, netctl);
188 frame = (MACB_BF(SOF, 1)
190 | MACB_BF(PHYA, macb->phy_addr)
193 macb_writel(macb, MAN, frame);
196 netstat = macb_readl(macb, NSR);
197 } while (!(netstat & MACB_BIT(IDLE)));
199 frame = macb_readl(macb, MAN);
201 netctl = macb_readl(macb, NCR);
202 netctl &= ~MACB_BIT(MPE);
203 macb_writel(macb, NCR, netctl);
205 return MACB_BFEXT(DATA, frame);
208 void __weak arch_get_mdio_control(const char *name)
213 #if defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
215 int macb_miiphy_read(struct mii_dev *bus, int phy_adr, int devad, int reg)
219 struct udevice *dev = eth_get_dev_by_name(bus->name);
220 struct macb_device *macb = dev_get_priv(dev);
222 struct eth_device *dev = eth_get_dev_by_name(bus->name);
223 struct macb_device *macb = to_macb(dev);
226 if (macb->phy_addr != phy_adr)
229 arch_get_mdio_control(bus->name);
230 value = macb_mdio_read(macb, reg);
235 int macb_miiphy_write(struct mii_dev *bus, int phy_adr, int devad, int reg,
239 struct udevice *dev = eth_get_dev_by_name(bus->name);
240 struct macb_device *macb = dev_get_priv(dev);
242 struct eth_device *dev = eth_get_dev_by_name(bus->name);
243 struct macb_device *macb = to_macb(dev);
246 if (macb->phy_addr != phy_adr)
249 arch_get_mdio_control(bus->name);
250 macb_mdio_write(macb, reg, value);
258 static inline void macb_invalidate_ring_desc(struct macb_device *macb, bool rx)
261 invalidate_dcache_range(macb->rx_ring_dma,
262 ALIGN(macb->rx_ring_dma + MACB_RX_DMA_DESC_SIZE,
265 invalidate_dcache_range(macb->tx_ring_dma,
266 ALIGN(macb->tx_ring_dma + MACB_TX_DMA_DESC_SIZE,
270 static inline void macb_flush_ring_desc(struct macb_device *macb, bool rx)
273 flush_dcache_range(macb->rx_ring_dma, macb->rx_ring_dma +
274 ALIGN(MACB_RX_DMA_DESC_SIZE, PKTALIGN));
276 flush_dcache_range(macb->tx_ring_dma, macb->tx_ring_dma +
277 ALIGN(MACB_TX_DMA_DESC_SIZE, PKTALIGN));
280 static inline void macb_flush_rx_buffer(struct macb_device *macb)
282 flush_dcache_range(macb->rx_buffer_dma, macb->rx_buffer_dma +
283 ALIGN(MACB_RX_BUFFER_SIZE, PKTALIGN));
286 static inline void macb_invalidate_rx_buffer(struct macb_device *macb)
288 invalidate_dcache_range(macb->rx_buffer_dma, macb->rx_buffer_dma +
289 ALIGN(MACB_RX_BUFFER_SIZE, PKTALIGN));
292 #if defined(CONFIG_CMD_NET)
294 static int _macb_send(struct macb_device *macb, const char *name, void *packet,
297 unsigned long paddr, ctrl;
298 unsigned int tx_head = macb->tx_head;
301 paddr = dma_map_single(packet, length, DMA_TO_DEVICE);
303 ctrl = length & TXBUF_FRMLEN_MASK;
304 ctrl |= TXBUF_FRAME_END;
305 if (tx_head == (MACB_TX_RING_SIZE - 1)) {
312 macb->tx_ring[tx_head].ctrl = ctrl;
313 macb->tx_ring[tx_head].addr = paddr;
315 macb_flush_ring_desc(macb, TX);
316 /* Do we need check paddr and length is dcache line aligned? */
317 flush_dcache_range(paddr, paddr + ALIGN(length, ARCH_DMA_MINALIGN));
318 macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART));
321 * I guess this is necessary because the networking core may
322 * re-use the transmit buffer as soon as we return...
324 for (i = 0; i <= MACB_TX_TIMEOUT; i++) {
326 macb_invalidate_ring_desc(macb, TX);
327 ctrl = macb->tx_ring[tx_head].ctrl;
328 if (ctrl & TXBUF_USED)
333 dma_unmap_single(packet, length, paddr);
335 if (i <= MACB_TX_TIMEOUT) {
336 if (ctrl & TXBUF_UNDERRUN)
337 printf("%s: TX underrun\n", name);
338 if (ctrl & TXBUF_EXHAUSTED)
339 printf("%s: TX buffers exhausted in mid frame\n", name);
341 printf("%s: TX timeout\n", name);
344 /* No one cares anyway */
348 static void reclaim_rx_buffers(struct macb_device *macb,
349 unsigned int new_tail)
355 macb_invalidate_ring_desc(macb, RX);
356 while (i > new_tail) {
357 macb->rx_ring[i].addr &= ~RXADDR_USED;
359 if (i > MACB_RX_RING_SIZE)
363 while (i < new_tail) {
364 macb->rx_ring[i].addr &= ~RXADDR_USED;
369 macb_flush_ring_desc(macb, RX);
370 macb->rx_tail = new_tail;
373 static int _macb_recv(struct macb_device *macb, uchar **packetp)
375 unsigned int next_rx_tail = macb->next_rx_tail;
380 macb->wrapped = false;
382 macb_invalidate_ring_desc(macb, RX);
384 if (!(macb->rx_ring[next_rx_tail].addr & RXADDR_USED))
387 status = macb->rx_ring[next_rx_tail].ctrl;
388 if (status & RXBUF_FRAME_START) {
389 if (next_rx_tail != macb->rx_tail)
390 reclaim_rx_buffers(macb, next_rx_tail);
391 macb->wrapped = false;
394 if (status & RXBUF_FRAME_END) {
395 buffer = macb->rx_buffer + 128 * macb->rx_tail;
396 length = status & RXBUF_FRMLEN_MASK;
398 macb_invalidate_rx_buffer(macb);
400 unsigned int headlen, taillen;
402 headlen = 128 * (MACB_RX_RING_SIZE
404 taillen = length - headlen;
405 memcpy((void *)net_rx_packets[0],
407 memcpy((void *)net_rx_packets[0] + headlen,
408 macb->rx_buffer, taillen);
409 *packetp = (void *)net_rx_packets[0];
414 if (++next_rx_tail >= MACB_RX_RING_SIZE)
416 macb->next_rx_tail = next_rx_tail;
419 if (++next_rx_tail >= MACB_RX_RING_SIZE) {
420 macb->wrapped = true;
428 static void macb_phy_reset(struct macb_device *macb, const char *name)
433 adv = ADVERTISE_CSMA | ADVERTISE_ALL;
434 macb_mdio_write(macb, MII_ADVERTISE, adv);
435 printf("%s: Starting autonegotiation...\n", name);
436 macb_mdio_write(macb, MII_BMCR, (BMCR_ANENABLE
439 for (i = 0; i < MACB_AUTONEG_TIMEOUT / 100; i++) {
440 status = macb_mdio_read(macb, MII_BMSR);
441 if (status & BMSR_ANEGCOMPLETE)
446 if (status & BMSR_ANEGCOMPLETE)
447 printf("%s: Autonegotiation complete\n", name);
449 printf("%s: Autonegotiation timed out (status=0x%04x)\n",
453 static int macb_phy_find(struct macb_device *macb, const char *name)
458 /* Search for PHY... */
459 for (i = 0; i < 32; i++) {
461 phy_id = macb_mdio_read(macb, MII_PHYSID1);
462 if (phy_id != 0xffff) {
463 printf("%s: PHY present at %d\n", name, i);
468 /* PHY isn't up to snuff */
469 printf("%s: PHY not found\n", name);
475 static int macb_phy_init(struct udevice *dev, const char *name)
477 static int macb_phy_init(struct macb_device *macb, const char *name)
481 struct macb_device *macb = dev_get_priv(dev);
484 u16 phy_id, status, adv, lpa;
485 int media, speed, duplex;
488 arch_get_mdio_control(name);
489 /* Auto-detect phy_addr */
490 if (!macb_phy_find(macb, name))
493 /* Check if the PHY is up to snuff... */
494 phy_id = macb_mdio_read(macb, MII_PHYSID1);
495 if (phy_id == 0xffff) {
496 printf("%s: No PHY present\n", name);
502 macb->phydev = phy_connect(macb->bus, macb->phy_addr, dev,
503 macb->phy_interface);
505 /* need to consider other phy interface mode */
506 macb->phydev = phy_connect(macb->bus, macb->phy_addr, &macb->netdev,
507 PHY_INTERFACE_MODE_RGMII);
510 printf("phy_connect failed\n");
514 phy_config(macb->phydev);
517 status = macb_mdio_read(macb, MII_BMSR);
518 if (!(status & BMSR_LSTATUS)) {
519 /* Try to re-negotiate if we don't have link already. */
520 macb_phy_reset(macb, name);
522 for (i = 0; i < MACB_AUTONEG_TIMEOUT / 100; i++) {
523 status = macb_mdio_read(macb, MII_BMSR);
524 if (status & BMSR_LSTATUS)
530 if (!(status & BMSR_LSTATUS)) {
531 printf("%s: link down (status: 0x%04x)\n",
536 /* First check for GMAC and that it is GiB capable */
537 if (gem_is_gigabit_capable(macb)) {
538 lpa = macb_mdio_read(macb, MII_STAT1000);
540 if (lpa & (LPA_1000FULL | LPA_1000HALF)) {
541 duplex = ((lpa & LPA_1000FULL) ? 1 : 0);
543 printf("%s: link up, 1000Mbps %s-duplex (lpa: 0x%04x)\n",
545 duplex ? "full" : "half",
548 ncfgr = macb_readl(macb, NCFGR);
549 ncfgr &= ~(MACB_BIT(SPD) | MACB_BIT(FD));
550 ncfgr |= GEM_BIT(GBE);
553 ncfgr |= MACB_BIT(FD);
555 macb_writel(macb, NCFGR, ncfgr);
561 /* fall back for EMAC checking */
562 adv = macb_mdio_read(macb, MII_ADVERTISE);
563 lpa = macb_mdio_read(macb, MII_LPA);
564 media = mii_nway_result(lpa & adv);
565 speed = (media & (ADVERTISE_100FULL | ADVERTISE_100HALF)
567 duplex = (media & ADVERTISE_FULL) ? 1 : 0;
568 printf("%s: link up, %sMbps %s-duplex (lpa: 0x%04x)\n",
570 speed ? "100" : "10",
571 duplex ? "full" : "half",
574 ncfgr = macb_readl(macb, NCFGR);
575 ncfgr &= ~(MACB_BIT(SPD) | MACB_BIT(FD) | GEM_BIT(GBE));
577 ncfgr |= MACB_BIT(SPD);
579 ncfgr |= MACB_BIT(FD);
580 macb_writel(macb, NCFGR, ncfgr);
585 static int gmac_init_multi_queues(struct macb_device *macb)
587 int i, num_queues = 1;
590 /* bit 0 is never set but queue 0 always exists */
591 queue_mask = gem_readl(macb, DCFG6) & 0xff;
594 for (i = 1; i < MACB_MAX_QUEUES; i++)
595 if (queue_mask & (1 << i))
598 macb->dummy_desc->ctrl = TXBUF_USED;
599 macb->dummy_desc->addr = 0;
600 flush_dcache_range(macb->dummy_desc_dma, macb->dummy_desc_dma +
601 ALIGN(MACB_TX_DUMMY_DMA_DESC_SIZE, PKTALIGN));
603 for (i = 1; i < num_queues; i++)
604 gem_writel_queue_TBQP(macb, macb->dummy_desc_dma, i - 1);
610 static int _macb_init(struct udevice *dev, const char *name)
612 static int _macb_init(struct macb_device *macb, const char *name)
616 struct macb_device *macb = dev_get_priv(dev);
622 * macb_halt should have been called at some point before now,
623 * so we'll assume the controller is idle.
626 /* initialize DMA descriptors */
627 paddr = macb->rx_buffer_dma;
628 for (i = 0; i < MACB_RX_RING_SIZE; i++) {
629 if (i == (MACB_RX_RING_SIZE - 1))
630 paddr |= RXADDR_WRAP;
631 macb->rx_ring[i].addr = paddr;
632 macb->rx_ring[i].ctrl = 0;
635 macb_flush_ring_desc(macb, RX);
636 macb_flush_rx_buffer(macb);
638 for (i = 0; i < MACB_TX_RING_SIZE; i++) {
639 macb->tx_ring[i].addr = 0;
640 if (i == (MACB_TX_RING_SIZE - 1))
641 macb->tx_ring[i].ctrl = TXBUF_USED | TXBUF_WRAP;
643 macb->tx_ring[i].ctrl = TXBUF_USED;
645 macb_flush_ring_desc(macb, TX);
650 macb->next_rx_tail = 0;
652 macb_writel(macb, RBQP, macb->rx_ring_dma);
653 macb_writel(macb, TBQP, macb->tx_ring_dma);
655 if (macb_is_gem(macb)) {
656 /* Check the multi queue and initialize the queue for tx */
657 gmac_init_multi_queues(macb);
660 * When the GMAC IP with GE feature, this bit is used to
661 * select interface between RGMII and GMII.
662 * When the GMAC IP without GE feature, this bit is used
663 * to select interface between RMII and MII.
666 if ((macb->phy_interface == PHY_INTERFACE_MODE_RMII) ||
667 (macb->phy_interface == PHY_INTERFACE_MODE_RGMII))
668 gem_writel(macb, UR, GEM_BIT(RGMII));
670 gem_writel(macb, UR, 0);
672 #if defined(CONFIG_RGMII) || defined(CONFIG_RMII)
673 gem_writel(macb, UR, GEM_BIT(RGMII));
675 gem_writel(macb, UR, 0);
679 /* choose RMII or MII mode. This depends on the board */
681 #ifdef CONFIG_AT91FAMILY
682 if (macb->phy_interface == PHY_INTERFACE_MODE_RMII) {
683 macb_writel(macb, USRIO,
684 MACB_BIT(RMII) | MACB_BIT(CLKEN));
686 macb_writel(macb, USRIO, MACB_BIT(CLKEN));
689 if (macb->phy_interface == PHY_INTERFACE_MODE_RMII)
690 macb_writel(macb, USRIO, 0);
692 macb_writel(macb, USRIO, MACB_BIT(MII));
696 #ifdef CONFIG_AT91FAMILY
697 macb_writel(macb, USRIO, MACB_BIT(RMII) | MACB_BIT(CLKEN));
699 macb_writel(macb, USRIO, 0);
702 #ifdef CONFIG_AT91FAMILY
703 macb_writel(macb, USRIO, MACB_BIT(CLKEN));
705 macb_writel(macb, USRIO, MACB_BIT(MII));
707 #endif /* CONFIG_RMII */
712 if (!macb_phy_init(dev, name))
714 if (!macb_phy_init(macb, name))
718 /* Enable TX and RX */
719 macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE));
724 static void _macb_halt(struct macb_device *macb)
728 /* Halt the controller and wait for any ongoing transmission to end. */
729 ncr = macb_readl(macb, NCR);
730 ncr |= MACB_BIT(THALT);
731 macb_writel(macb, NCR, ncr);
734 tsr = macb_readl(macb, TSR);
735 } while (tsr & MACB_BIT(TGO));
737 /* Disable TX and RX, and clear statistics */
738 macb_writel(macb, NCR, MACB_BIT(CLRSTAT));
741 static int _macb_write_hwaddr(struct macb_device *macb, unsigned char *enetaddr)
746 /* set hardware address */
747 hwaddr_bottom = enetaddr[0] | enetaddr[1] << 8 |
748 enetaddr[2] << 16 | enetaddr[3] << 24;
749 macb_writel(macb, SA1B, hwaddr_bottom);
750 hwaddr_top = enetaddr[4] | enetaddr[5] << 8;
751 macb_writel(macb, SA1T, hwaddr_top);
755 static u32 macb_mdc_clk_div(int id, struct macb_device *macb)
758 #if defined(CONFIG_DM_ETH) && defined(CONFIG_CLK)
759 unsigned long macb_hz = macb->pclk_rate;
761 unsigned long macb_hz = get_macb_pclk_rate(id);
764 if (macb_hz < 20000000)
765 config = MACB_BF(CLK, MACB_CLK_DIV8);
766 else if (macb_hz < 40000000)
767 config = MACB_BF(CLK, MACB_CLK_DIV16);
768 else if (macb_hz < 80000000)
769 config = MACB_BF(CLK, MACB_CLK_DIV32);
771 config = MACB_BF(CLK, MACB_CLK_DIV64);
776 static u32 gem_mdc_clk_div(int id, struct macb_device *macb)
780 #if defined(CONFIG_DM_ETH) && defined(CONFIG_CLK)
781 unsigned long macb_hz = macb->pclk_rate;
783 unsigned long macb_hz = get_macb_pclk_rate(id);
786 if (macb_hz < 20000000)
787 config = GEM_BF(CLK, GEM_CLK_DIV8);
788 else if (macb_hz < 40000000)
789 config = GEM_BF(CLK, GEM_CLK_DIV16);
790 else if (macb_hz < 80000000)
791 config = GEM_BF(CLK, GEM_CLK_DIV32);
792 else if (macb_hz < 120000000)
793 config = GEM_BF(CLK, GEM_CLK_DIV48);
794 else if (macb_hz < 160000000)
795 config = GEM_BF(CLK, GEM_CLK_DIV64);
797 config = GEM_BF(CLK, GEM_CLK_DIV96);
803 * Get the DMA bus width field of the network configuration register that we
804 * should program. We find the width from decoding the design configuration
805 * register to find the maximum supported data bus width.
807 static u32 macb_dbw(struct macb_device *macb)
809 switch (GEM_BFEXT(DBWDEF, gem_readl(macb, DCFG1))) {
811 return GEM_BF(DBW, GEM_DBW128);
813 return GEM_BF(DBW, GEM_DBW64);
816 return GEM_BF(DBW, GEM_DBW32);
820 static void _macb_eth_initialize(struct macb_device *macb)
822 int id = 0; /* This is not used by functions we call */
825 /* TODO: we need check the rx/tx_ring_dma is dcache line aligned */
826 macb->rx_buffer = dma_alloc_coherent(MACB_RX_BUFFER_SIZE,
827 &macb->rx_buffer_dma);
828 macb->rx_ring = dma_alloc_coherent(MACB_RX_DMA_DESC_SIZE,
830 macb->tx_ring = dma_alloc_coherent(MACB_TX_DMA_DESC_SIZE,
832 macb->dummy_desc = dma_alloc_coherent(MACB_TX_DUMMY_DMA_DESC_SIZE,
833 &macb->dummy_desc_dma);
836 * Do some basic initialization so that we at least can talk
839 if (macb_is_gem(macb)) {
840 ncfgr = gem_mdc_clk_div(id, macb);
841 ncfgr |= macb_dbw(macb);
843 ncfgr = macb_mdc_clk_div(id, macb);
846 macb_writel(macb, NCFGR, ncfgr);
849 #ifndef CONFIG_DM_ETH
850 static int macb_send(struct eth_device *netdev, void *packet, int length)
852 struct macb_device *macb = to_macb(netdev);
854 return _macb_send(macb, netdev->name, packet, length);
857 static int macb_recv(struct eth_device *netdev)
859 struct macb_device *macb = to_macb(netdev);
863 macb->wrapped = false;
865 macb->next_rx_tail = macb->rx_tail;
866 length = _macb_recv(macb, &packet);
868 net_process_received_packet(packet, length);
869 reclaim_rx_buffers(macb, macb->next_rx_tail);
870 } else if (length < 0) {
876 static int macb_init(struct eth_device *netdev, bd_t *bd)
878 struct macb_device *macb = to_macb(netdev);
880 return _macb_init(macb, netdev->name);
883 static void macb_halt(struct eth_device *netdev)
885 struct macb_device *macb = to_macb(netdev);
887 return _macb_halt(macb);
890 static int macb_write_hwaddr(struct eth_device *netdev)
892 struct macb_device *macb = to_macb(netdev);
894 return _macb_write_hwaddr(macb, netdev->enetaddr);
897 int macb_eth_initialize(int id, void *regs, unsigned int phy_addr)
899 struct macb_device *macb;
900 struct eth_device *netdev;
902 macb = malloc(sizeof(struct macb_device));
904 printf("Error: Failed to allocate memory for MACB%d\n", id);
907 memset(macb, 0, sizeof(struct macb_device));
909 netdev = &macb->netdev;
912 macb->phy_addr = phy_addr;
914 if (macb_is_gem(macb))
915 sprintf(netdev->name, "gmac%d", id);
917 sprintf(netdev->name, "macb%d", id);
919 netdev->init = macb_init;
920 netdev->halt = macb_halt;
921 netdev->send = macb_send;
922 netdev->recv = macb_recv;
923 netdev->write_hwaddr = macb_write_hwaddr;
925 _macb_eth_initialize(macb);
927 eth_register(netdev);
929 #if defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
931 struct mii_dev *mdiodev = mdio_alloc();
934 strncpy(mdiodev->name, netdev->name, MDIO_NAME_LEN);
935 mdiodev->read = macb_miiphy_read;
936 mdiodev->write = macb_miiphy_write;
938 retval = mdio_register(mdiodev);
941 macb->bus = miiphy_get_dev_by_name(netdev->name);
945 #endif /* !CONFIG_DM_ETH */
949 static int macb_start(struct udevice *dev)
951 return _macb_init(dev, dev->name);
954 static int macb_send(struct udevice *dev, void *packet, int length)
956 struct macb_device *macb = dev_get_priv(dev);
958 return _macb_send(macb, dev->name, packet, length);
961 static int macb_recv(struct udevice *dev, int flags, uchar **packetp)
963 struct macb_device *macb = dev_get_priv(dev);
965 macb->next_rx_tail = macb->rx_tail;
966 macb->wrapped = false;
968 return _macb_recv(macb, packetp);
971 static int macb_free_pkt(struct udevice *dev, uchar *packet, int length)
973 struct macb_device *macb = dev_get_priv(dev);
975 reclaim_rx_buffers(macb, macb->next_rx_tail);
980 static void macb_stop(struct udevice *dev)
982 struct macb_device *macb = dev_get_priv(dev);
987 static int macb_write_hwaddr(struct udevice *dev)
989 struct eth_pdata *plat = dev_get_platdata(dev);
990 struct macb_device *macb = dev_get_priv(dev);
992 return _macb_write_hwaddr(macb, plat->enetaddr);
995 static const struct eth_ops macb_eth_ops = {
1000 .free_pkt = macb_free_pkt,
1001 .write_hwaddr = macb_write_hwaddr,
1005 static int macb_enable_clk(struct udevice *dev)
1007 struct macb_device *macb = dev_get_priv(dev);
1012 ret = clk_get_by_index(dev, 0, &clk);
1016 ret = clk_enable(&clk);
1020 clk_rate = clk_get_rate(&clk);
1024 macb->pclk_rate = clk_rate;
1030 static int macb_eth_probe(struct udevice *dev)
1032 struct eth_pdata *pdata = dev_get_platdata(dev);
1033 struct macb_device *macb = dev_get_priv(dev);
1034 const char *phy_mode;
1035 __maybe_unused int ret;
1037 phy_mode = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy-mode",
1040 macb->phy_interface = phy_get_interface_by_name(phy_mode);
1041 if (macb->phy_interface == -1) {
1042 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
1046 macb->regs = (void *)pdata->iobase;
1049 ret = macb_enable_clk(dev);
1054 _macb_eth_initialize(macb);
1056 #if defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
1057 macb->bus = mdio_alloc();
1060 strncpy(macb->bus->name, dev->name, MDIO_NAME_LEN);
1061 macb->bus->read = macb_miiphy_read;
1062 macb->bus->write = macb_miiphy_write;
1064 ret = mdio_register(macb->bus);
1067 macb->bus = miiphy_get_dev_by_name(dev->name);
1073 static int macb_eth_remove(struct udevice *dev)
1075 struct macb_device *macb = dev_get_priv(dev);
1077 #ifdef CONFIG_PHYLIB
1080 mdio_unregister(macb->bus);
1081 mdio_free(macb->bus);
1086 static int macb_eth_ofdata_to_platdata(struct udevice *dev)
1088 struct eth_pdata *pdata = dev_get_platdata(dev);
1090 pdata->iobase = devfdt_get_addr(dev);
1094 static const struct udevice_id macb_eth_ids[] = {
1095 { .compatible = "cdns,macb" },
1096 { .compatible = "cdns,at91sam9260-macb" },
1097 { .compatible = "atmel,sama5d2-gem" },
1098 { .compatible = "atmel,sama5d3-gem" },
1099 { .compatible = "atmel,sama5d4-gem" },
1103 U_BOOT_DRIVER(eth_macb) = {
1106 .of_match = macb_eth_ids,
1107 .ofdata_to_platdata = macb_eth_ofdata_to_platdata,
1108 .probe = macb_eth_probe,
1109 .remove = macb_eth_remove,
1110 .ops = &macb_eth_ops,
1111 .priv_auto_alloc_size = sizeof(struct macb_device),
1112 .platdata_auto_alloc_size = sizeof(struct eth_pdata),