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 #ifdef CONFIG_MACB_SEARCH_PHY
454 static int macb_phy_find(struct macb_device *macb, const char *name)
459 /* Search for PHY... */
460 for (i = 0; i < 32; i++) {
462 phy_id = macb_mdio_read(macb, MII_PHYSID1);
463 if (phy_id != 0xffff) {
464 printf("%s: PHY present at %d\n", name, i);
469 /* PHY isn't up to snuff */
470 printf("%s: PHY not found\n", name);
474 #endif /* CONFIG_MACB_SEARCH_PHY */
477 static int macb_phy_init(struct udevice *dev, const char *name)
479 static int macb_phy_init(struct macb_device *macb, const char *name)
483 struct macb_device *macb = dev_get_priv(dev);
486 u16 phy_id, status, adv, lpa;
487 int media, speed, duplex;
490 arch_get_mdio_control(name);
491 #ifdef CONFIG_MACB_SEARCH_PHY
492 /* Auto-detect phy_addr */
493 if (!macb_phy_find(macb, name))
495 #endif /* CONFIG_MACB_SEARCH_PHY */
497 /* Check if the PHY is up to snuff... */
498 phy_id = macb_mdio_read(macb, MII_PHYSID1);
499 if (phy_id == 0xffff) {
500 printf("%s: No PHY present\n", name);
506 macb->phydev = phy_connect(macb->bus, macb->phy_addr, dev,
507 macb->phy_interface);
509 /* need to consider other phy interface mode */
510 macb->phydev = phy_connect(macb->bus, macb->phy_addr, &macb->netdev,
511 PHY_INTERFACE_MODE_RGMII);
514 printf("phy_connect failed\n");
518 phy_config(macb->phydev);
521 status = macb_mdio_read(macb, MII_BMSR);
522 if (!(status & BMSR_LSTATUS)) {
523 /* Try to re-negotiate if we don't have link already. */
524 macb_phy_reset(macb, name);
526 for (i = 0; i < MACB_AUTONEG_TIMEOUT / 100; i++) {
527 status = macb_mdio_read(macb, MII_BMSR);
528 if (status & BMSR_LSTATUS)
534 if (!(status & BMSR_LSTATUS)) {
535 printf("%s: link down (status: 0x%04x)\n",
540 /* First check for GMAC and that it is GiB capable */
541 if (gem_is_gigabit_capable(macb)) {
542 lpa = macb_mdio_read(macb, MII_STAT1000);
544 if (lpa & (LPA_1000FULL | LPA_1000HALF)) {
545 duplex = ((lpa & LPA_1000FULL) ? 1 : 0);
547 printf("%s: link up, 1000Mbps %s-duplex (lpa: 0x%04x)\n",
549 duplex ? "full" : "half",
552 ncfgr = macb_readl(macb, NCFGR);
553 ncfgr &= ~(MACB_BIT(SPD) | MACB_BIT(FD));
554 ncfgr |= GEM_BIT(GBE);
557 ncfgr |= MACB_BIT(FD);
559 macb_writel(macb, NCFGR, ncfgr);
565 /* fall back for EMAC checking */
566 adv = macb_mdio_read(macb, MII_ADVERTISE);
567 lpa = macb_mdio_read(macb, MII_LPA);
568 media = mii_nway_result(lpa & adv);
569 speed = (media & (ADVERTISE_100FULL | ADVERTISE_100HALF)
571 duplex = (media & ADVERTISE_FULL) ? 1 : 0;
572 printf("%s: link up, %sMbps %s-duplex (lpa: 0x%04x)\n",
574 speed ? "100" : "10",
575 duplex ? "full" : "half",
578 ncfgr = macb_readl(macb, NCFGR);
579 ncfgr &= ~(MACB_BIT(SPD) | MACB_BIT(FD) | GEM_BIT(GBE));
581 ncfgr |= MACB_BIT(SPD);
583 ncfgr |= MACB_BIT(FD);
584 macb_writel(macb, NCFGR, ncfgr);
589 static int gmac_init_multi_queues(struct macb_device *macb)
591 int i, num_queues = 1;
594 /* bit 0 is never set but queue 0 always exists */
595 queue_mask = gem_readl(macb, DCFG6) & 0xff;
598 for (i = 1; i < MACB_MAX_QUEUES; i++)
599 if (queue_mask & (1 << i))
602 macb->dummy_desc->ctrl = TXBUF_USED;
603 macb->dummy_desc->addr = 0;
604 flush_dcache_range(macb->dummy_desc_dma, macb->dummy_desc_dma +
605 ALIGN(MACB_TX_DUMMY_DMA_DESC_SIZE, PKTALIGN));
607 for (i = 1; i < num_queues; i++)
608 gem_writel_queue_TBQP(macb, macb->dummy_desc_dma, i - 1);
614 static int _macb_init(struct udevice *dev, const char *name)
616 static int _macb_init(struct macb_device *macb, const char *name)
620 struct macb_device *macb = dev_get_priv(dev);
626 * macb_halt should have been called at some point before now,
627 * so we'll assume the controller is idle.
630 /* initialize DMA descriptors */
631 paddr = macb->rx_buffer_dma;
632 for (i = 0; i < MACB_RX_RING_SIZE; i++) {
633 if (i == (MACB_RX_RING_SIZE - 1))
634 paddr |= RXADDR_WRAP;
635 macb->rx_ring[i].addr = paddr;
636 macb->rx_ring[i].ctrl = 0;
639 macb_flush_ring_desc(macb, RX);
640 macb_flush_rx_buffer(macb);
642 for (i = 0; i < MACB_TX_RING_SIZE; i++) {
643 macb->tx_ring[i].addr = 0;
644 if (i == (MACB_TX_RING_SIZE - 1))
645 macb->tx_ring[i].ctrl = TXBUF_USED | TXBUF_WRAP;
647 macb->tx_ring[i].ctrl = TXBUF_USED;
649 macb_flush_ring_desc(macb, TX);
654 macb->next_rx_tail = 0;
656 macb_writel(macb, RBQP, macb->rx_ring_dma);
657 macb_writel(macb, TBQP, macb->tx_ring_dma);
659 if (macb_is_gem(macb)) {
660 /* Check the multi queue and initialize the queue for tx */
661 gmac_init_multi_queues(macb);
664 * When the GMAC IP with GE feature, this bit is used to
665 * select interface between RGMII and GMII.
666 * When the GMAC IP without GE feature, this bit is used
667 * to select interface between RMII and MII.
670 if (macb->phy_interface == PHY_INTERFACE_MODE_RMII)
671 gem_writel(macb, UR, GEM_BIT(RGMII));
673 gem_writel(macb, UR, 0);
675 #if defined(CONFIG_RGMII) || defined(CONFIG_RMII)
676 gem_writel(macb, UR, GEM_BIT(RGMII));
678 gem_writel(macb, UR, 0);
682 /* choose RMII or MII mode. This depends on the board */
684 #ifdef CONFIG_AT91FAMILY
685 if (macb->phy_interface == PHY_INTERFACE_MODE_RMII) {
686 macb_writel(macb, USRIO,
687 MACB_BIT(RMII) | MACB_BIT(CLKEN));
689 macb_writel(macb, USRIO, MACB_BIT(CLKEN));
692 if (macb->phy_interface == PHY_INTERFACE_MODE_RMII)
693 macb_writel(macb, USRIO, 0);
695 macb_writel(macb, USRIO, MACB_BIT(MII));
699 #ifdef CONFIG_AT91FAMILY
700 macb_writel(macb, USRIO, MACB_BIT(RMII) | MACB_BIT(CLKEN));
702 macb_writel(macb, USRIO, 0);
705 #ifdef CONFIG_AT91FAMILY
706 macb_writel(macb, USRIO, MACB_BIT(CLKEN));
708 macb_writel(macb, USRIO, MACB_BIT(MII));
710 #endif /* CONFIG_RMII */
715 if (!macb_phy_init(dev, name))
717 if (!macb_phy_init(macb, name))
721 /* Enable TX and RX */
722 macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE));
727 static void _macb_halt(struct macb_device *macb)
731 /* Halt the controller and wait for any ongoing transmission to end. */
732 ncr = macb_readl(macb, NCR);
733 ncr |= MACB_BIT(THALT);
734 macb_writel(macb, NCR, ncr);
737 tsr = macb_readl(macb, TSR);
738 } while (tsr & MACB_BIT(TGO));
740 /* Disable TX and RX, and clear statistics */
741 macb_writel(macb, NCR, MACB_BIT(CLRSTAT));
744 static int _macb_write_hwaddr(struct macb_device *macb, unsigned char *enetaddr)
749 /* set hardware address */
750 hwaddr_bottom = enetaddr[0] | enetaddr[1] << 8 |
751 enetaddr[2] << 16 | enetaddr[3] << 24;
752 macb_writel(macb, SA1B, hwaddr_bottom);
753 hwaddr_top = enetaddr[4] | enetaddr[5] << 8;
754 macb_writel(macb, SA1T, hwaddr_top);
758 static u32 macb_mdc_clk_div(int id, struct macb_device *macb)
761 #if defined(CONFIG_DM_ETH) && defined(CONFIG_CLK)
762 unsigned long macb_hz = macb->pclk_rate;
764 unsigned long macb_hz = get_macb_pclk_rate(id);
767 if (macb_hz < 20000000)
768 config = MACB_BF(CLK, MACB_CLK_DIV8);
769 else if (macb_hz < 40000000)
770 config = MACB_BF(CLK, MACB_CLK_DIV16);
771 else if (macb_hz < 80000000)
772 config = MACB_BF(CLK, MACB_CLK_DIV32);
774 config = MACB_BF(CLK, MACB_CLK_DIV64);
779 static u32 gem_mdc_clk_div(int id, struct macb_device *macb)
783 #if defined(CONFIG_DM_ETH) && defined(CONFIG_CLK)
784 unsigned long macb_hz = macb->pclk_rate;
786 unsigned long macb_hz = get_macb_pclk_rate(id);
789 if (macb_hz < 20000000)
790 config = GEM_BF(CLK, GEM_CLK_DIV8);
791 else if (macb_hz < 40000000)
792 config = GEM_BF(CLK, GEM_CLK_DIV16);
793 else if (macb_hz < 80000000)
794 config = GEM_BF(CLK, GEM_CLK_DIV32);
795 else if (macb_hz < 120000000)
796 config = GEM_BF(CLK, GEM_CLK_DIV48);
797 else if (macb_hz < 160000000)
798 config = GEM_BF(CLK, GEM_CLK_DIV64);
800 config = GEM_BF(CLK, GEM_CLK_DIV96);
806 * Get the DMA bus width field of the network configuration register that we
807 * should program. We find the width from decoding the design configuration
808 * register to find the maximum supported data bus width.
810 static u32 macb_dbw(struct macb_device *macb)
812 switch (GEM_BFEXT(DBWDEF, gem_readl(macb, DCFG1))) {
814 return GEM_BF(DBW, GEM_DBW128);
816 return GEM_BF(DBW, GEM_DBW64);
819 return GEM_BF(DBW, GEM_DBW32);
823 static void _macb_eth_initialize(struct macb_device *macb)
825 int id = 0; /* This is not used by functions we call */
828 /* TODO: we need check the rx/tx_ring_dma is dcache line aligned */
829 macb->rx_buffer = dma_alloc_coherent(MACB_RX_BUFFER_SIZE,
830 &macb->rx_buffer_dma);
831 macb->rx_ring = dma_alloc_coherent(MACB_RX_DMA_DESC_SIZE,
833 macb->tx_ring = dma_alloc_coherent(MACB_TX_DMA_DESC_SIZE,
835 macb->dummy_desc = dma_alloc_coherent(MACB_TX_DUMMY_DMA_DESC_SIZE,
836 &macb->dummy_desc_dma);
839 * Do some basic initialization so that we at least can talk
842 if (macb_is_gem(macb)) {
843 ncfgr = gem_mdc_clk_div(id, macb);
844 ncfgr |= macb_dbw(macb);
846 ncfgr = macb_mdc_clk_div(id, macb);
849 macb_writel(macb, NCFGR, ncfgr);
852 #ifndef CONFIG_DM_ETH
853 static int macb_send(struct eth_device *netdev, void *packet, int length)
855 struct macb_device *macb = to_macb(netdev);
857 return _macb_send(macb, netdev->name, packet, length);
860 static int macb_recv(struct eth_device *netdev)
862 struct macb_device *macb = to_macb(netdev);
866 macb->wrapped = false;
868 macb->next_rx_tail = macb->rx_tail;
869 length = _macb_recv(macb, &packet);
871 net_process_received_packet(packet, length);
872 reclaim_rx_buffers(macb, macb->next_rx_tail);
873 } else if (length < 0) {
879 static int macb_init(struct eth_device *netdev, bd_t *bd)
881 struct macb_device *macb = to_macb(netdev);
883 return _macb_init(macb, netdev->name);
886 static void macb_halt(struct eth_device *netdev)
888 struct macb_device *macb = to_macb(netdev);
890 return _macb_halt(macb);
893 static int macb_write_hwaddr(struct eth_device *netdev)
895 struct macb_device *macb = to_macb(netdev);
897 return _macb_write_hwaddr(macb, netdev->enetaddr);
900 int macb_eth_initialize(int id, void *regs, unsigned int phy_addr)
902 struct macb_device *macb;
903 struct eth_device *netdev;
905 macb = malloc(sizeof(struct macb_device));
907 printf("Error: Failed to allocate memory for MACB%d\n", id);
910 memset(macb, 0, sizeof(struct macb_device));
912 netdev = &macb->netdev;
915 macb->phy_addr = phy_addr;
917 if (macb_is_gem(macb))
918 sprintf(netdev->name, "gmac%d", id);
920 sprintf(netdev->name, "macb%d", id);
922 netdev->init = macb_init;
923 netdev->halt = macb_halt;
924 netdev->send = macb_send;
925 netdev->recv = macb_recv;
926 netdev->write_hwaddr = macb_write_hwaddr;
928 _macb_eth_initialize(macb);
930 eth_register(netdev);
932 #if defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
934 struct mii_dev *mdiodev = mdio_alloc();
937 strncpy(mdiodev->name, netdev->name, MDIO_NAME_LEN);
938 mdiodev->read = macb_miiphy_read;
939 mdiodev->write = macb_miiphy_write;
941 retval = mdio_register(mdiodev);
944 macb->bus = miiphy_get_dev_by_name(netdev->name);
948 #endif /* !CONFIG_DM_ETH */
952 static int macb_start(struct udevice *dev)
954 return _macb_init(dev, dev->name);
957 static int macb_send(struct udevice *dev, void *packet, int length)
959 struct macb_device *macb = dev_get_priv(dev);
961 return _macb_send(macb, dev->name, packet, length);
964 static int macb_recv(struct udevice *dev, int flags, uchar **packetp)
966 struct macb_device *macb = dev_get_priv(dev);
968 macb->next_rx_tail = macb->rx_tail;
969 macb->wrapped = false;
971 return _macb_recv(macb, packetp);
974 static int macb_free_pkt(struct udevice *dev, uchar *packet, int length)
976 struct macb_device *macb = dev_get_priv(dev);
978 reclaim_rx_buffers(macb, macb->next_rx_tail);
983 static void macb_stop(struct udevice *dev)
985 struct macb_device *macb = dev_get_priv(dev);
990 static int macb_write_hwaddr(struct udevice *dev)
992 struct eth_pdata *plat = dev_get_platdata(dev);
993 struct macb_device *macb = dev_get_priv(dev);
995 return _macb_write_hwaddr(macb, plat->enetaddr);
998 static const struct eth_ops macb_eth_ops = {
1003 .free_pkt = macb_free_pkt,
1004 .write_hwaddr = macb_write_hwaddr,
1008 static int macb_enable_clk(struct udevice *dev)
1010 struct macb_device *macb = dev_get_priv(dev);
1015 ret = clk_get_by_index(dev, 0, &clk);
1019 ret = clk_enable(&clk);
1023 clk_rate = clk_get_rate(&clk);
1027 macb->pclk_rate = clk_rate;
1033 static int macb_eth_probe(struct udevice *dev)
1035 struct eth_pdata *pdata = dev_get_platdata(dev);
1036 struct macb_device *macb = dev_get_priv(dev);
1037 const char *phy_mode;
1038 __maybe_unused int ret;
1040 phy_mode = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy-mode",
1043 macb->phy_interface = phy_get_interface_by_name(phy_mode);
1044 if (macb->phy_interface == -1) {
1045 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
1049 macb->regs = (void *)pdata->iobase;
1052 ret = macb_enable_clk(dev);
1057 _macb_eth_initialize(macb);
1059 #if defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
1060 macb->bus = mdio_alloc();
1063 strncpy(macb->bus->name, dev->name, MDIO_NAME_LEN);
1064 macb->bus->read = macb_miiphy_read;
1065 macb->bus->write = macb_miiphy_write;
1067 ret = mdio_register(macb->bus);
1070 macb->bus = miiphy_get_dev_by_name(dev->name);
1076 static int macb_eth_remove(struct udevice *dev)
1078 struct macb_device *macb = dev_get_priv(dev);
1080 #ifdef CONFIG_PHYLIB
1083 mdio_unregister(macb->bus);
1084 mdio_free(macb->bus);
1089 static int macb_eth_ofdata_to_platdata(struct udevice *dev)
1091 struct eth_pdata *pdata = dev_get_platdata(dev);
1093 pdata->iobase = dev_get_addr(dev);
1097 static const struct udevice_id macb_eth_ids[] = {
1098 { .compatible = "cdns,macb" },
1099 { .compatible = "cdns,at91sam9260-macb" },
1100 { .compatible = "atmel,sama5d2-gem" },
1101 { .compatible = "atmel,sama5d3-gem" },
1102 { .compatible = "atmel,sama5d4-gem" },
1106 U_BOOT_DRIVER(eth_macb) = {
1109 .of_match = macb_eth_ids,
1110 .ofdata_to_platdata = macb_eth_ofdata_to_platdata,
1111 .probe = macb_eth_probe,
1112 .remove = macb_eth_remove,
1113 .ops = &macb_eth_ops,
1114 .priv_auto_alloc_size = sizeof(struct macb_device),
1115 .platdata_auto_alloc_size = sizeof(struct eth_pdata),