1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2005-2006 Atmel Corporation
10 #include <linux/delay.h>
13 * The u-boot networking stack is a little weird. It seems like the
14 * networking core allocates receive buffers up front without any
15 * regard to the hardware that's supposed to actually receive those
18 * The MACB receives packets into 128-byte receive buffers, so the
19 * buffers allocated by the core isn't very practical to use. We'll
20 * allocate our own, but we need one such buffer in case a packet
21 * wraps around the DMA ring so that we have to copy it.
23 * Therefore, define CONFIG_SYS_RX_ETH_BUFFER to 1 in the board-specific
24 * configuration header. This way, the core allocates one RX buffer
25 * and one TX buffer, each of which can hold a ethernet packet of
28 * For some reason, the networking core unconditionally specifies a
29 * 32-byte packet "alignment" (which really should be called
30 * "padding"). MACB shouldn't need that, but we'll refrain from any
31 * core modifications here...
41 #include <linux/mii.h>
43 #include <linux/dma-mapping.h>
44 #include <asm/arch/clk.h>
45 #include <linux/errno.h>
49 DECLARE_GLOBAL_DATA_PTR;
52 * These buffer sizes must be power of 2 and divisible
53 * by RX_BUFFER_MULTIPLE
55 #define MACB_RX_BUFFER_SIZE 128
56 #define GEM_RX_BUFFER_SIZE 2048
57 #define RX_BUFFER_MULTIPLE 64
59 #define MACB_RX_RING_SIZE 32
60 #define MACB_TX_RING_SIZE 16
62 #define MACB_TX_TIMEOUT 1000
63 #define MACB_AUTONEG_TIMEOUT 5000000
65 #ifdef CONFIG_MACB_ZYNQ
66 /* INCR4 AHB bursts */
67 #define MACB_ZYNQ_GEM_DMACR_BLENGTH 0x00000004
68 /* Use full configured addressable space (8 Kb) */
69 #define MACB_ZYNQ_GEM_DMACR_RXSIZE 0x00000300
70 /* Use full configured addressable space (4 Kb) */
71 #define MACB_ZYNQ_GEM_DMACR_TXSIZE 0x00000400
72 /* Set RXBUF with use of 128 byte */
73 #define MACB_ZYNQ_GEM_DMACR_RXBUF 0x00020000
74 #define MACB_ZYNQ_GEM_DMACR_INIT \
75 (MACB_ZYNQ_GEM_DMACR_BLENGTH | \
76 MACB_ZYNQ_GEM_DMACR_RXSIZE | \
77 MACB_ZYNQ_GEM_DMACR_TXSIZE | \
78 MACB_ZYNQ_GEM_DMACR_RXBUF)
81 struct macb_dma_desc {
86 struct macb_dma_desc_64 {
91 #define HW_DMA_CAP_32B 0
92 #define HW_DMA_CAP_64B 1
94 #define DMA_DESC_SIZE 16
95 #define DMA_DESC_BYTES(n) ((n) * DMA_DESC_SIZE)
96 #define MACB_TX_DMA_DESC_SIZE (DMA_DESC_BYTES(MACB_TX_RING_SIZE))
97 #define MACB_RX_DMA_DESC_SIZE (DMA_DESC_BYTES(MACB_RX_RING_SIZE))
98 #define MACB_TX_DUMMY_DMA_DESC_SIZE (DMA_DESC_BYTES(1))
100 #define RXBUF_FRMLEN_MASK 0x00000fff
101 #define TXBUF_FRMLEN_MASK 0x000007ff
108 const struct macb_config *config;
110 unsigned int rx_tail;
111 unsigned int tx_head;
112 unsigned int tx_tail;
113 unsigned int next_rx_tail;
118 struct macb_dma_desc *rx_ring;
119 struct macb_dma_desc *tx_ring;
120 size_t rx_buffer_size;
122 unsigned long rx_buffer_dma;
123 unsigned long rx_ring_dma;
124 unsigned long tx_ring_dma;
126 struct macb_dma_desc *dummy_desc;
127 unsigned long dummy_desc_dma;
129 const struct device *dev;
130 #ifndef CONFIG_DM_ETH
131 struct eth_device netdev;
133 unsigned short phy_addr;
136 struct phy_device *phydev;
141 unsigned long pclk_rate;
143 phy_interface_t phy_interface;
147 struct macb_usrio_cfg {
155 unsigned int dma_burst_length;
156 unsigned int hw_dma_cap;
159 int (*clk_init)(struct udevice *dev, ulong rate);
160 const struct macb_usrio_cfg *usrio;
163 #ifndef CONFIG_DM_ETH
164 #define to_macb(_nd) container_of(_nd, struct macb_device, netdev)
167 static int macb_is_gem(struct macb_device *macb)
169 return MACB_BFEXT(IDNUM, macb_readl(macb, MID)) >= 0x2;
172 #ifndef cpu_is_sama5d2
173 #define cpu_is_sama5d2() 0
176 #ifndef cpu_is_sama5d4
177 #define cpu_is_sama5d4() 0
180 static int gem_is_gigabit_capable(struct macb_device *macb)
183 * The GEM controllers embedded in SAMA5D2 and SAMA5D4 are
184 * configured to support only 10/100.
186 return macb_is_gem(macb) && !cpu_is_sama5d2() && !cpu_is_sama5d4();
189 static void macb_mdio_write(struct macb_device *macb, u8 phy_adr, u8 reg,
192 unsigned long netctl;
193 unsigned long netstat;
196 netctl = macb_readl(macb, NCR);
197 netctl |= MACB_BIT(MPE);
198 macb_writel(macb, NCR, netctl);
200 frame = (MACB_BF(SOF, 1)
202 | MACB_BF(PHYA, phy_adr)
205 | MACB_BF(DATA, value));
206 macb_writel(macb, MAN, frame);
209 netstat = macb_readl(macb, NSR);
210 } while (!(netstat & MACB_BIT(IDLE)));
212 netctl = macb_readl(macb, NCR);
213 netctl &= ~MACB_BIT(MPE);
214 macb_writel(macb, NCR, netctl);
217 static u16 macb_mdio_read(struct macb_device *macb, u8 phy_adr, u8 reg)
219 unsigned long netctl;
220 unsigned long netstat;
223 netctl = macb_readl(macb, NCR);
224 netctl |= MACB_BIT(MPE);
225 macb_writel(macb, NCR, netctl);
227 frame = (MACB_BF(SOF, 1)
229 | MACB_BF(PHYA, phy_adr)
232 macb_writel(macb, MAN, frame);
235 netstat = macb_readl(macb, NSR);
236 } while (!(netstat & MACB_BIT(IDLE)));
238 frame = macb_readl(macb, MAN);
240 netctl = macb_readl(macb, NCR);
241 netctl &= ~MACB_BIT(MPE);
242 macb_writel(macb, NCR, netctl);
244 return MACB_BFEXT(DATA, frame);
247 void __weak arch_get_mdio_control(const char *name)
252 #if defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
254 int macb_miiphy_read(struct mii_dev *bus, int phy_adr, int devad, int reg)
258 struct udevice *dev = eth_get_dev_by_name(bus->name);
259 struct macb_device *macb = dev_get_priv(dev);
261 struct eth_device *dev = eth_get_dev_by_name(bus->name);
262 struct macb_device *macb = to_macb(dev);
265 arch_get_mdio_control(bus->name);
266 value = macb_mdio_read(macb, phy_adr, reg);
271 int macb_miiphy_write(struct mii_dev *bus, int phy_adr, int devad, int reg,
275 struct udevice *dev = eth_get_dev_by_name(bus->name);
276 struct macb_device *macb = dev_get_priv(dev);
278 struct eth_device *dev = eth_get_dev_by_name(bus->name);
279 struct macb_device *macb = to_macb(dev);
282 arch_get_mdio_control(bus->name);
283 macb_mdio_write(macb, phy_adr, reg, value);
291 static inline void macb_invalidate_ring_desc(struct macb_device *macb, bool rx)
294 invalidate_dcache_range(macb->rx_ring_dma,
295 ALIGN(macb->rx_ring_dma + MACB_RX_DMA_DESC_SIZE,
298 invalidate_dcache_range(macb->tx_ring_dma,
299 ALIGN(macb->tx_ring_dma + MACB_TX_DMA_DESC_SIZE,
303 static inline void macb_flush_ring_desc(struct macb_device *macb, bool rx)
306 flush_dcache_range(macb->rx_ring_dma, macb->rx_ring_dma +
307 ALIGN(MACB_RX_DMA_DESC_SIZE, PKTALIGN));
309 flush_dcache_range(macb->tx_ring_dma, macb->tx_ring_dma +
310 ALIGN(MACB_TX_DMA_DESC_SIZE, PKTALIGN));
313 static inline void macb_flush_rx_buffer(struct macb_device *macb)
315 flush_dcache_range(macb->rx_buffer_dma, macb->rx_buffer_dma +
316 ALIGN(macb->rx_buffer_size * MACB_RX_RING_SIZE,
320 static inline void macb_invalidate_rx_buffer(struct macb_device *macb)
322 invalidate_dcache_range(macb->rx_buffer_dma, macb->rx_buffer_dma +
323 ALIGN(macb->rx_buffer_size * MACB_RX_RING_SIZE,
327 #if defined(CONFIG_CMD_NET)
329 static struct macb_dma_desc_64 *macb_64b_desc(struct macb_dma_desc *desc)
331 return (struct macb_dma_desc_64 *)((void *)desc
332 + sizeof(struct macb_dma_desc));
335 static void macb_set_addr(struct macb_device *macb, struct macb_dma_desc *desc,
338 struct macb_dma_desc_64 *desc_64;
340 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B) {
341 desc_64 = macb_64b_desc(desc);
342 desc_64->addrh = upper_32_bits(addr);
344 desc->addr = lower_32_bits(addr);
347 static int _macb_send(struct macb_device *macb, const char *name, void *packet,
350 unsigned long paddr, ctrl;
351 unsigned int tx_head = macb->tx_head;
354 paddr = dma_map_single(packet, length, DMA_TO_DEVICE);
356 ctrl = length & TXBUF_FRMLEN_MASK;
357 ctrl |= MACB_BIT(TX_LAST);
358 if (tx_head == (MACB_TX_RING_SIZE - 1)) {
359 ctrl |= MACB_BIT(TX_WRAP);
365 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B)
366 tx_head = tx_head * 2;
368 macb->tx_ring[tx_head].ctrl = ctrl;
369 macb_set_addr(macb, &macb->tx_ring[tx_head], paddr);
372 macb_flush_ring_desc(macb, TX);
373 macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART));
376 * I guess this is necessary because the networking core may
377 * re-use the transmit buffer as soon as we return...
379 for (i = 0; i <= MACB_TX_TIMEOUT; i++) {
381 macb_invalidate_ring_desc(macb, TX);
382 ctrl = macb->tx_ring[tx_head].ctrl;
383 if (ctrl & MACB_BIT(TX_USED))
388 dma_unmap_single(paddr, length, DMA_TO_DEVICE);
390 if (i <= MACB_TX_TIMEOUT) {
391 if (ctrl & MACB_BIT(TX_UNDERRUN))
392 printf("%s: TX underrun\n", name);
393 if (ctrl & MACB_BIT(TX_BUF_EXHAUSTED))
394 printf("%s: TX buffers exhausted in mid frame\n", name);
396 printf("%s: TX timeout\n", name);
399 /* No one cares anyway */
403 static void reclaim_rx_buffers(struct macb_device *macb,
404 unsigned int new_tail)
411 macb_invalidate_ring_desc(macb, RX);
412 while (i > new_tail) {
413 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B)
417 macb->rx_ring[count].addr &= ~MACB_BIT(RX_USED);
419 if (i > MACB_RX_RING_SIZE)
423 while (i < new_tail) {
424 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B)
428 macb->rx_ring[count].addr &= ~MACB_BIT(RX_USED);
433 macb_flush_ring_desc(macb, RX);
434 macb->rx_tail = new_tail;
437 static int _macb_recv(struct macb_device *macb, uchar **packetp)
439 unsigned int next_rx_tail = macb->next_rx_tail;
445 macb->wrapped = false;
447 macb_invalidate_ring_desc(macb, RX);
449 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B)
450 next_rx_tail = next_rx_tail * 2;
452 if (!(macb->rx_ring[next_rx_tail].addr & MACB_BIT(RX_USED)))
455 status = macb->rx_ring[next_rx_tail].ctrl;
456 if (status & MACB_BIT(RX_SOF)) {
457 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B) {
458 next_rx_tail = next_rx_tail / 2;
462 if (next_rx_tail != macb->rx_tail)
463 reclaim_rx_buffers(macb, next_rx_tail);
464 macb->wrapped = false;
467 if (status & MACB_BIT(RX_EOF)) {
468 buffer = macb->rx_buffer +
469 macb->rx_buffer_size * macb->rx_tail;
470 length = status & RXBUF_FRMLEN_MASK;
472 macb_invalidate_rx_buffer(macb);
474 unsigned int headlen, taillen;
476 headlen = macb->rx_buffer_size *
477 (MACB_RX_RING_SIZE - macb->rx_tail);
478 taillen = length - headlen;
479 memcpy((void *)net_rx_packets[0],
481 memcpy((void *)net_rx_packets[0] + headlen,
482 macb->rx_buffer, taillen);
483 *packetp = (void *)net_rx_packets[0];
488 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B) {
490 next_rx_tail = next_rx_tail / 2;
493 if (++next_rx_tail >= MACB_RX_RING_SIZE)
495 macb->next_rx_tail = next_rx_tail;
498 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B) {
500 next_rx_tail = next_rx_tail / 2;
504 if (++next_rx_tail >= MACB_RX_RING_SIZE) {
505 macb->wrapped = true;
513 static void macb_phy_reset(struct macb_device *macb, const char *name)
518 adv = ADVERTISE_CSMA | ADVERTISE_ALL;
519 macb_mdio_write(macb, macb->phy_addr, MII_ADVERTISE, adv);
520 printf("%s: Starting autonegotiation...\n", name);
521 macb_mdio_write(macb, macb->phy_addr, MII_BMCR, (BMCR_ANENABLE
524 for (i = 0; i < MACB_AUTONEG_TIMEOUT / 100; i++) {
525 status = macb_mdio_read(macb, macb->phy_addr, MII_BMSR);
526 if (status & BMSR_ANEGCOMPLETE)
531 if (status & BMSR_ANEGCOMPLETE)
532 printf("%s: Autonegotiation complete\n", name);
534 printf("%s: Autonegotiation timed out (status=0x%04x)\n",
538 static int macb_phy_find(struct macb_device *macb, const char *name)
543 phy_id = macb_mdio_read(macb, macb->phy_addr, MII_PHYSID1);
544 if (phy_id != 0xffff) {
545 printf("%s: PHY present at %d\n", name, macb->phy_addr);
549 /* Search for PHY... */
550 for (i = 0; i < 32; i++) {
552 phy_id = macb_mdio_read(macb, macb->phy_addr, MII_PHYSID1);
553 if (phy_id != 0xffff) {
554 printf("%s: PHY present at %d\n", name, i);
559 /* PHY isn't up to snuff */
560 printf("%s: PHY not found\n", name);
566 * macb_linkspd_cb - Linkspeed change callback function
567 * @dev/@regs: MACB udevice (DM version) or
568 * Base Register of MACB devices (non-DM version)
570 * Returns 0 when operation success and negative errno number
571 * when operation failed.
574 static int macb_sifive_clk_init(struct udevice *dev, ulong rate)
579 addr = dev_read_addr_index(dev, 1);
580 if (addr == FDT_ADDR_T_NONE)
583 gemgxl_regs = (void __iomem *)addr;
588 * SiFive GEMGXL TX clock operation mode:
590 * 0 = GMII mode. Use 125 MHz gemgxlclk from PRCI in TX logic
591 * and output clock on GMII output signal GTX_CLK
592 * 1 = MII mode. Use MII input signal TX_CLK in TX logic
594 writel(rate != 125000000, gemgxl_regs);
598 static int macb_sama7g5_clk_init(struct udevice *dev, ulong rate)
603 ret = clk_get_by_name(dev, "tx_clk", &clk);
608 * This is for using GCK. Clock rate is addressed via assigned-clock
609 * property, so only clock enable is needed here. The switching to
610 * proper clock rate depending on link speed is managed by IP logic.
612 return clk_enable(&clk);
615 int __weak macb_linkspd_cb(struct udevice *dev, unsigned int speed)
618 struct macb_device *macb = dev_get_priv(dev);
625 rate = 2500000; /* 2.5 MHz */
628 rate = 25000000; /* 25 MHz */
631 rate = 125000000; /* 125 MHz */
634 /* does not change anything */
638 if (macb->config->clk_init)
639 return macb->config->clk_init(dev, rate);
642 * "tx_clk" is an optional clock source for MACB.
643 * Ignore if it does not exist in DT.
645 ret = clk_get_by_name(dev, "tx_clk", &tx_clk);
650 ret = clk_set_rate(&tx_clk, rate);
659 int __weak macb_linkspd_cb(void *regs, unsigned int speed)
666 static int macb_phy_init(struct udevice *dev, const char *name)
668 static int macb_phy_init(struct macb_device *macb, const char *name)
672 struct macb_device *macb = dev_get_priv(dev);
675 u16 phy_id, status, adv, lpa;
676 int media, speed, duplex;
680 arch_get_mdio_control(name);
681 /* Auto-detect phy_addr */
682 ret = macb_phy_find(macb, name);
686 /* Check if the PHY is up to snuff... */
687 phy_id = macb_mdio_read(macb, macb->phy_addr, MII_PHYSID1);
688 if (phy_id == 0xffff) {
689 printf("%s: No PHY present\n", name);
695 macb->phydev = phy_connect(macb->bus, macb->phy_addr, dev,
696 macb->phy_interface);
698 /* need to consider other phy interface mode */
699 macb->phydev = phy_connect(macb->bus, macb->phy_addr, &macb->netdev,
700 PHY_INTERFACE_MODE_RGMII);
703 printf("phy_connect failed\n");
707 phy_config(macb->phydev);
710 status = macb_mdio_read(macb, macb->phy_addr, MII_BMSR);
711 if (!(status & BMSR_LSTATUS)) {
712 /* Try to re-negotiate if we don't have link already. */
713 macb_phy_reset(macb, name);
715 for (i = 0; i < MACB_AUTONEG_TIMEOUT / 100; i++) {
716 status = macb_mdio_read(macb, macb->phy_addr, MII_BMSR);
717 if (status & BMSR_LSTATUS) {
719 * Delay a bit after the link is established,
720 * so that the next xfer does not fail
729 if (!(status & BMSR_LSTATUS)) {
730 printf("%s: link down (status: 0x%04x)\n",
735 /* First check for GMAC and that it is GiB capable */
736 if (gem_is_gigabit_capable(macb)) {
737 lpa = macb_mdio_read(macb, macb->phy_addr, MII_STAT1000);
739 if (lpa & (LPA_1000FULL | LPA_1000HALF | LPA_1000XFULL |
741 duplex = ((lpa & (LPA_1000FULL | LPA_1000XFULL)) ?
744 printf("%s: link up, 1000Mbps %s-duplex (lpa: 0x%04x)\n",
746 duplex ? "full" : "half",
749 ncfgr = macb_readl(macb, NCFGR);
750 ncfgr &= ~(MACB_BIT(SPD) | MACB_BIT(FD));
751 ncfgr |= GEM_BIT(GBE);
754 ncfgr |= MACB_BIT(FD);
756 macb_writel(macb, NCFGR, ncfgr);
759 ret = macb_linkspd_cb(dev, _1000BASET);
761 ret = macb_linkspd_cb(macb->regs, _1000BASET);
770 /* fall back for EMAC checking */
771 adv = macb_mdio_read(macb, macb->phy_addr, MII_ADVERTISE);
772 lpa = macb_mdio_read(macb, macb->phy_addr, MII_LPA);
773 media = mii_nway_result(lpa & adv);
774 speed = (media & (ADVERTISE_100FULL | ADVERTISE_100HALF)
776 duplex = (media & ADVERTISE_FULL) ? 1 : 0;
777 printf("%s: link up, %sMbps %s-duplex (lpa: 0x%04x)\n",
779 speed ? "100" : "10",
780 duplex ? "full" : "half",
783 ncfgr = macb_readl(macb, NCFGR);
784 ncfgr &= ~(MACB_BIT(SPD) | MACB_BIT(FD) | GEM_BIT(GBE));
786 ncfgr |= MACB_BIT(SPD);
788 ret = macb_linkspd_cb(dev, _100BASET);
790 ret = macb_linkspd_cb(macb->regs, _100BASET);
794 ret = macb_linkspd_cb(dev, _10BASET);
796 ret = macb_linkspd_cb(macb->regs, _10BASET);
804 ncfgr |= MACB_BIT(FD);
805 macb_writel(macb, NCFGR, ncfgr);
810 static int gmac_init_multi_queues(struct macb_device *macb)
812 int i, num_queues = 1;
816 /* bit 0 is never set but queue 0 always exists */
817 queue_mask = gem_readl(macb, DCFG6) & 0xff;
820 for (i = 1; i < MACB_MAX_QUEUES; i++)
821 if (queue_mask & (1 << i))
824 macb->dummy_desc->ctrl = MACB_BIT(TX_USED);
825 macb->dummy_desc->addr = 0;
826 flush_dcache_range(macb->dummy_desc_dma, macb->dummy_desc_dma +
827 ALIGN(MACB_TX_DUMMY_DMA_DESC_SIZE, PKTALIGN));
828 paddr = macb->dummy_desc_dma;
830 for (i = 1; i < num_queues; i++) {
831 gem_writel_queue_TBQP(macb, lower_32_bits(paddr), i - 1);
832 gem_writel_queue_RBQP(macb, lower_32_bits(paddr), i - 1);
833 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B) {
834 gem_writel_queue_TBQPH(macb, upper_32_bits(paddr),
836 gem_writel_queue_RBQPH(macb, upper_32_bits(paddr),
843 static void gmac_configure_dma(struct macb_device *macb)
848 buffer_size = macb->rx_buffer_size / RX_BUFFER_MULTIPLE;
849 dmacfg = gem_readl(macb, DMACFG) & ~GEM_BF(RXBS, -1L);
850 dmacfg |= GEM_BF(RXBS, buffer_size);
852 if (macb->config->dma_burst_length)
853 dmacfg = GEM_BFINS(FBLDO,
854 macb->config->dma_burst_length, dmacfg);
856 dmacfg |= GEM_BIT(TXPBMS) | GEM_BF(RXBMS, -1L);
857 dmacfg &= ~GEM_BIT(ENDIA_PKT);
859 if (macb->is_big_endian)
860 dmacfg |= GEM_BIT(ENDIA_DESC); /* CPU in big endian */
862 dmacfg &= ~GEM_BIT(ENDIA_DESC);
864 dmacfg &= ~GEM_BIT(ADDR64);
865 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B)
866 dmacfg |= GEM_BIT(ADDR64);
868 gem_writel(macb, DMACFG, dmacfg);
872 static int _macb_init(struct udevice *dev, const char *name)
874 static int _macb_init(struct macb_device *macb, const char *name)
878 struct macb_device *macb = dev_get_priv(dev);
879 unsigned int val = 0;
887 * macb_halt should have been called at some point before now,
888 * so we'll assume the controller is idle.
891 /* initialize DMA descriptors */
892 paddr = macb->rx_buffer_dma;
893 for (i = 0; i < MACB_RX_RING_SIZE; i++) {
894 if (i == (MACB_RX_RING_SIZE - 1))
895 paddr |= MACB_BIT(RX_WRAP);
896 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B)
900 macb->rx_ring[count].ctrl = 0;
901 macb_set_addr(macb, &macb->rx_ring[count], paddr);
902 paddr += macb->rx_buffer_size;
904 macb_flush_ring_desc(macb, RX);
905 macb_flush_rx_buffer(macb);
907 for (i = 0; i < MACB_TX_RING_SIZE; i++) {
908 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B)
912 macb_set_addr(macb, &macb->tx_ring[count], 0);
913 if (i == (MACB_TX_RING_SIZE - 1))
914 macb->tx_ring[count].ctrl = MACB_BIT(TX_USED) |
917 macb->tx_ring[count].ctrl = MACB_BIT(TX_USED);
919 macb_flush_ring_desc(macb, TX);
924 macb->next_rx_tail = 0;
926 #ifdef CONFIG_MACB_ZYNQ
927 gem_writel(macb, DMACFG, MACB_ZYNQ_GEM_DMACR_INIT);
930 macb_writel(macb, RBQP, lower_32_bits(macb->rx_ring_dma));
931 macb_writel(macb, TBQP, lower_32_bits(macb->tx_ring_dma));
932 if (macb->config->hw_dma_cap & HW_DMA_CAP_64B) {
933 macb_writel(macb, RBQPH, upper_32_bits(macb->rx_ring_dma));
934 macb_writel(macb, TBQPH, upper_32_bits(macb->tx_ring_dma));
937 if (macb_is_gem(macb)) {
938 /* Initialize DMA properties */
939 gmac_configure_dma(macb);
940 /* Check the multi queue and initialize the queue for tx */
941 gmac_init_multi_queues(macb);
944 * When the GMAC IP with GE feature, this bit is used to
945 * select interface between RGMII and GMII.
946 * When the GMAC IP without GE feature, this bit is used
947 * to select interface between RMII and MII.
950 if (macb->phy_interface == PHY_INTERFACE_MODE_RGMII ||
951 macb->phy_interface == PHY_INTERFACE_MODE_RGMII_ID ||
952 macb->phy_interface == PHY_INTERFACE_MODE_RGMII_RXID ||
953 macb->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID)
954 val = macb->config->usrio->rgmii;
955 else if (macb->phy_interface == PHY_INTERFACE_MODE_RMII)
956 val = macb->config->usrio->rmii;
957 else if (macb->phy_interface == PHY_INTERFACE_MODE_MII)
958 val = macb->config->usrio->mii;
960 if (macb->config->caps & MACB_CAPS_USRIO_HAS_CLKEN)
961 val |= macb->config->usrio->clken;
963 gem_writel(macb, USRIO, val);
965 if (macb->phy_interface == PHY_INTERFACE_MODE_SGMII) {
966 unsigned int ncfgr = macb_readl(macb, NCFGR);
968 ncfgr |= GEM_BIT(SGMIIEN) | GEM_BIT(PCSSEL);
969 macb_writel(macb, NCFGR, ncfgr);
972 #if defined(CONFIG_RGMII) || defined(CONFIG_RMII)
973 gem_writel(macb, USRIO, macb->config->usrio->rgmii);
975 gem_writel(macb, USRIO, 0);
979 /* choose RMII or MII mode. This depends on the board */
981 #ifdef CONFIG_AT91FAMILY
982 if (macb->phy_interface == PHY_INTERFACE_MODE_RMII) {
983 macb_writel(macb, USRIO,
984 macb->config->usrio->rmii |
985 macb->config->usrio->clken);
987 macb_writel(macb, USRIO, macb->config->usrio->clken);
990 if (macb->phy_interface == PHY_INTERFACE_MODE_RMII)
991 macb_writel(macb, USRIO, 0);
993 macb_writel(macb, USRIO, macb->config->usrio->mii);
997 #ifdef CONFIG_AT91FAMILY
998 macb_writel(macb, USRIO, macb->config->usrio->rmii |
999 macb->config->usrio->clken);
1001 macb_writel(macb, USRIO, 0);
1004 #ifdef CONFIG_AT91FAMILY
1005 macb_writel(macb, USRIO, macb->config->usrio->clken);
1007 macb_writel(macb, USRIO, macb->config->usrio->mii);
1009 #endif /* CONFIG_RMII */
1013 #ifdef CONFIG_DM_ETH
1014 ret = macb_phy_init(dev, name);
1016 ret = macb_phy_init(macb, name);
1021 /* Enable TX and RX */
1022 macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE));
1027 static void _macb_halt(struct macb_device *macb)
1031 /* Halt the controller and wait for any ongoing transmission to end. */
1032 ncr = macb_readl(macb, NCR);
1033 ncr |= MACB_BIT(THALT);
1034 macb_writel(macb, NCR, ncr);
1037 tsr = macb_readl(macb, TSR);
1038 } while (tsr & MACB_BIT(TGO));
1040 /* Disable TX and RX, and clear statistics */
1041 macb_writel(macb, NCR, MACB_BIT(CLRSTAT));
1044 static int _macb_write_hwaddr(struct macb_device *macb, unsigned char *enetaddr)
1049 /* set hardware address */
1050 hwaddr_bottom = enetaddr[0] | enetaddr[1] << 8 |
1051 enetaddr[2] << 16 | enetaddr[3] << 24;
1052 macb_writel(macb, SA1B, hwaddr_bottom);
1053 hwaddr_top = enetaddr[4] | enetaddr[5] << 8;
1054 macb_writel(macb, SA1T, hwaddr_top);
1058 static u32 macb_mdc_clk_div(int id, struct macb_device *macb)
1061 #if defined(CONFIG_DM_ETH) && defined(CONFIG_CLK)
1062 unsigned long macb_hz = macb->pclk_rate;
1064 unsigned long macb_hz = get_macb_pclk_rate(id);
1067 if (macb_hz < 20000000)
1068 config = MACB_BF(CLK, MACB_CLK_DIV8);
1069 else if (macb_hz < 40000000)
1070 config = MACB_BF(CLK, MACB_CLK_DIV16);
1071 else if (macb_hz < 80000000)
1072 config = MACB_BF(CLK, MACB_CLK_DIV32);
1074 config = MACB_BF(CLK, MACB_CLK_DIV64);
1079 static u32 gem_mdc_clk_div(int id, struct macb_device *macb)
1083 #if defined(CONFIG_DM_ETH) && defined(CONFIG_CLK)
1084 unsigned long macb_hz = macb->pclk_rate;
1086 unsigned long macb_hz = get_macb_pclk_rate(id);
1089 if (macb_hz < 20000000)
1090 config = GEM_BF(CLK, GEM_CLK_DIV8);
1091 else if (macb_hz < 40000000)
1092 config = GEM_BF(CLK, GEM_CLK_DIV16);
1093 else if (macb_hz < 80000000)
1094 config = GEM_BF(CLK, GEM_CLK_DIV32);
1095 else if (macb_hz < 120000000)
1096 config = GEM_BF(CLK, GEM_CLK_DIV48);
1097 else if (macb_hz < 160000000)
1098 config = GEM_BF(CLK, GEM_CLK_DIV64);
1099 else if (macb_hz < 240000000)
1100 config = GEM_BF(CLK, GEM_CLK_DIV96);
1101 else if (macb_hz < 320000000)
1102 config = GEM_BF(CLK, GEM_CLK_DIV128);
1104 config = GEM_BF(CLK, GEM_CLK_DIV224);
1110 * Get the DMA bus width field of the network configuration register that we
1111 * should program. We find the width from decoding the design configuration
1112 * register to find the maximum supported data bus width.
1114 static u32 macb_dbw(struct macb_device *macb)
1116 switch (GEM_BFEXT(DBWDEF, gem_readl(macb, DCFG1))) {
1118 return GEM_BF(DBW, GEM_DBW128);
1120 return GEM_BF(DBW, GEM_DBW64);
1123 return GEM_BF(DBW, GEM_DBW32);
1127 static void _macb_eth_initialize(struct macb_device *macb)
1129 int id = 0; /* This is not used by functions we call */
1132 if (macb_is_gem(macb))
1133 macb->rx_buffer_size = GEM_RX_BUFFER_SIZE;
1135 macb->rx_buffer_size = MACB_RX_BUFFER_SIZE;
1137 /* TODO: we need check the rx/tx_ring_dma is dcache line aligned */
1138 macb->rx_buffer = dma_alloc_coherent(macb->rx_buffer_size *
1140 &macb->rx_buffer_dma);
1141 macb->rx_ring = dma_alloc_coherent(MACB_RX_DMA_DESC_SIZE,
1142 &macb->rx_ring_dma);
1143 macb->tx_ring = dma_alloc_coherent(MACB_TX_DMA_DESC_SIZE,
1144 &macb->tx_ring_dma);
1145 macb->dummy_desc = dma_alloc_coherent(MACB_TX_DUMMY_DMA_DESC_SIZE,
1146 &macb->dummy_desc_dma);
1149 * Do some basic initialization so that we at least can talk
1152 if (macb_is_gem(macb)) {
1153 ncfgr = gem_mdc_clk_div(id, macb);
1154 ncfgr |= macb_dbw(macb);
1156 ncfgr = macb_mdc_clk_div(id, macb);
1159 macb_writel(macb, NCFGR, ncfgr);
1162 #ifndef CONFIG_DM_ETH
1163 static int macb_send(struct eth_device *netdev, void *packet, int length)
1165 struct macb_device *macb = to_macb(netdev);
1167 return _macb_send(macb, netdev->name, packet, length);
1170 static int macb_recv(struct eth_device *netdev)
1172 struct macb_device *macb = to_macb(netdev);
1176 macb->wrapped = false;
1178 macb->next_rx_tail = macb->rx_tail;
1179 length = _macb_recv(macb, &packet);
1181 net_process_received_packet(packet, length);
1182 reclaim_rx_buffers(macb, macb->next_rx_tail);
1189 static int macb_init(struct eth_device *netdev, struct bd_info *bd)
1191 struct macb_device *macb = to_macb(netdev);
1193 return _macb_init(macb, netdev->name);
1196 static void macb_halt(struct eth_device *netdev)
1198 struct macb_device *macb = to_macb(netdev);
1200 return _macb_halt(macb);
1203 static int macb_write_hwaddr(struct eth_device *netdev)
1205 struct macb_device *macb = to_macb(netdev);
1207 return _macb_write_hwaddr(macb, netdev->enetaddr);
1210 int macb_eth_initialize(int id, void *regs, unsigned int phy_addr)
1212 struct macb_device *macb;
1213 struct eth_device *netdev;
1215 macb = malloc(sizeof(struct macb_device));
1217 printf("Error: Failed to allocate memory for MACB%d\n", id);
1220 memset(macb, 0, sizeof(struct macb_device));
1222 netdev = &macb->netdev;
1225 macb->phy_addr = phy_addr;
1227 if (macb_is_gem(macb))
1228 sprintf(netdev->name, "gmac%d", id);
1230 sprintf(netdev->name, "macb%d", id);
1232 netdev->init = macb_init;
1233 netdev->halt = macb_halt;
1234 netdev->send = macb_send;
1235 netdev->recv = macb_recv;
1236 netdev->write_hwaddr = macb_write_hwaddr;
1238 _macb_eth_initialize(macb);
1240 eth_register(netdev);
1242 #if defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
1244 struct mii_dev *mdiodev = mdio_alloc();
1247 strncpy(mdiodev->name, netdev->name, MDIO_NAME_LEN);
1248 mdiodev->read = macb_miiphy_read;
1249 mdiodev->write = macb_miiphy_write;
1251 retval = mdio_register(mdiodev);
1254 macb->bus = miiphy_get_dev_by_name(netdev->name);
1258 #endif /* !CONFIG_DM_ETH */
1260 #ifdef CONFIG_DM_ETH
1262 static int macb_start(struct udevice *dev)
1264 return _macb_init(dev, dev->name);
1267 static int macb_send(struct udevice *dev, void *packet, int length)
1269 struct macb_device *macb = dev_get_priv(dev);
1271 return _macb_send(macb, dev->name, packet, length);
1274 static int macb_recv(struct udevice *dev, int flags, uchar **packetp)
1276 struct macb_device *macb = dev_get_priv(dev);
1278 macb->next_rx_tail = macb->rx_tail;
1279 macb->wrapped = false;
1281 return _macb_recv(macb, packetp);
1284 static int macb_free_pkt(struct udevice *dev, uchar *packet, int length)
1286 struct macb_device *macb = dev_get_priv(dev);
1288 reclaim_rx_buffers(macb, macb->next_rx_tail);
1293 static void macb_stop(struct udevice *dev)
1295 struct macb_device *macb = dev_get_priv(dev);
1300 static int macb_write_hwaddr(struct udevice *dev)
1302 struct eth_pdata *plat = dev_get_plat(dev);
1303 struct macb_device *macb = dev_get_priv(dev);
1305 return _macb_write_hwaddr(macb, plat->enetaddr);
1308 static const struct eth_ops macb_eth_ops = {
1309 .start = macb_start,
1313 .free_pkt = macb_free_pkt,
1314 .write_hwaddr = macb_write_hwaddr,
1318 static int macb_enable_clk(struct udevice *dev)
1320 struct macb_device *macb = dev_get_priv(dev);
1325 ret = clk_get_by_index(dev, 0, &clk);
1330 * If clock driver didn't support enable or disable then
1331 * we get -ENOSYS from clk_enable(). To handle this, we
1332 * don't fail for ret == -ENOSYS.
1334 ret = clk_enable(&clk);
1335 if (ret && ret != -ENOSYS)
1338 clk_rate = clk_get_rate(&clk);
1342 macb->pclk_rate = clk_rate;
1348 static const struct macb_usrio_cfg macb_default_usrio = {
1349 .mii = MACB_BIT(MII),
1350 .rmii = MACB_BIT(RMII),
1351 .rgmii = GEM_BIT(RGMII),
1352 .clken = MACB_BIT(CLKEN),
1355 static const struct macb_config default_gem_config = {
1356 .dma_burst_length = 16,
1357 .hw_dma_cap = HW_DMA_CAP_32B,
1359 .usrio = &macb_default_usrio,
1362 static int macb_eth_probe(struct udevice *dev)
1364 struct eth_pdata *pdata = dev_get_plat(dev);
1365 struct macb_device *macb = dev_get_priv(dev);
1366 struct ofnode_phandle_args phandle_args;
1367 const char *phy_mode;
1370 phy_mode = dev_read_prop(dev, "phy-mode", NULL);
1373 macb->phy_interface = phy_get_interface_by_name(phy_mode);
1374 if (macb->phy_interface == -1) {
1375 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
1379 /* Read phyaddr from DT */
1380 if (!dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
1382 macb->phy_addr = ofnode_read_u32_default(phandle_args.node,
1385 macb->regs = (void *)pdata->iobase;
1387 macb->is_big_endian = (cpu_to_be32(0x12345678) == 0x12345678);
1389 macb->config = (struct macb_config *)dev_get_driver_data(dev);
1391 macb->config = &default_gem_config;
1394 ret = macb_enable_clk(dev);
1399 _macb_eth_initialize(macb);
1401 #if defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
1402 macb->bus = mdio_alloc();
1405 strncpy(macb->bus->name, dev->name, MDIO_NAME_LEN);
1406 macb->bus->read = macb_miiphy_read;
1407 macb->bus->write = macb_miiphy_write;
1409 ret = mdio_register(macb->bus);
1412 macb->bus = miiphy_get_dev_by_name(dev->name);
1418 static int macb_eth_remove(struct udevice *dev)
1420 struct macb_device *macb = dev_get_priv(dev);
1422 #ifdef CONFIG_PHYLIB
1425 mdio_unregister(macb->bus);
1426 mdio_free(macb->bus);
1432 * macb_late_eth_of_to_plat
1433 * @dev: udevice struct
1434 * Returns 0 when operation success and negative errno number
1435 * when operation failed.
1437 int __weak macb_late_eth_of_to_plat(struct udevice *dev)
1442 static int macb_eth_of_to_plat(struct udevice *dev)
1444 struct eth_pdata *pdata = dev_get_plat(dev);
1446 pdata->iobase = (phys_addr_t)dev_remap_addr(dev);
1450 return macb_late_eth_of_to_plat(dev);
1453 static const struct macb_usrio_cfg sama7g5_usrio = {
1460 static const struct macb_config microchip_config = {
1461 .dma_burst_length = 16,
1462 .hw_dma_cap = HW_DMA_CAP_64B,
1464 .usrio = &macb_default_usrio,
1467 static const struct macb_config sama5d4_config = {
1468 .dma_burst_length = 4,
1469 .hw_dma_cap = HW_DMA_CAP_32B,
1471 .usrio = &macb_default_usrio,
1474 static const struct macb_config sifive_config = {
1475 .dma_burst_length = 16,
1476 .hw_dma_cap = HW_DMA_CAP_32B,
1477 .clk_init = macb_sifive_clk_init,
1478 .usrio = &macb_default_usrio,
1481 static const struct macb_config sama7g5_gmac_config = {
1482 .dma_burst_length = 16,
1483 .hw_dma_cap = HW_DMA_CAP_32B,
1484 .clk_init = macb_sama7g5_clk_init,
1485 .usrio = &sama7g5_usrio,
1488 static const struct macb_config sama7g5_emac_config = {
1489 .caps = MACB_CAPS_USRIO_HAS_CLKEN,
1490 .dma_burst_length = 16,
1491 .hw_dma_cap = HW_DMA_CAP_32B,
1492 .usrio = &sama7g5_usrio,
1495 static const struct udevice_id macb_eth_ids[] = {
1496 { .compatible = "cdns,macb" },
1497 { .compatible = "cdns,at91sam9260-macb" },
1498 { .compatible = "cdns,sam9x60-macb" },
1499 { .compatible = "cdns,sama7g5-gem",
1500 .data = (ulong)&sama7g5_gmac_config },
1501 { .compatible = "cdns,sama7g5-emac",
1502 .data = (ulong)&sama7g5_emac_config },
1503 { .compatible = "atmel,sama5d2-gem" },
1504 { .compatible = "atmel,sama5d3-gem" },
1505 { .compatible = "atmel,sama5d4-gem", .data = (ulong)&sama5d4_config },
1506 { .compatible = "cdns,zynq-gem" },
1507 { .compatible = "sifive,fu540-c000-gem",
1508 .data = (ulong)&sifive_config },
1509 { .compatible = "microchip,mpfs-mss-gem",
1510 .data = (ulong)µchip_config },
1514 U_BOOT_DRIVER(eth_macb) = {
1517 .of_match = macb_eth_ids,
1518 .of_to_plat = macb_eth_of_to_plat,
1519 .probe = macb_eth_probe,
1520 .remove = macb_eth_remove,
1521 .ops = &macb_eth_ops,
1522 .priv_auto = sizeof(struct macb_device),
1523 .plat_auto = sizeof(struct eth_pdata),