2 * Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com>
5 * This software was developed by SRI International and the University of
6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
7 * ("CTSRD"), as part of the DARPA CRASH research programme.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * Ethernet media access controller (EMAC)
33 * Chapter 17, Altera Cyclone V Device Handbook (CV-5V2 2014.07.22)
35 * EMAC is an instance of the Synopsys DesignWare 3504-0
36 * Universal 10/100/1000 Ethernet MAC (DWC_gmac).
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
42 #include <sys/param.h>
43 #include <sys/systm.h>
46 #include <sys/kernel.h>
48 #include <sys/malloc.h>
50 #include <sys/module.h>
51 #include <sys/mutex.h>
53 #include <sys/socket.h>
54 #include <sys/sockio.h>
58 #include <net/ethernet.h>
59 #include <net/if_dl.h>
60 #include <net/if_media.h>
61 #include <net/if_types.h>
62 #include <net/if_var.h>
64 #include <machine/bus.h>
66 #include <dev/dwc/if_dwc.h>
67 #include <dev/dwc/if_dwcvar.h>
68 #include <dev/mii/mii.h>
69 #include <dev/mii/miivar.h>
70 #include <dev/ofw/ofw_bus.h>
71 #include <dev/ofw/ofw_bus_subr.h>
74 #include <dev/extres/clk/clk.h>
75 #include <dev/extres/hwreset/hwreset.h>
78 #include "if_dwc_if.h"
80 #include "miibus_if.h"
82 #define READ4(_sc, _reg) \
83 bus_read_4((_sc)->res[0], _reg)
84 #define WRITE4(_sc, _reg, _val) \
85 bus_write_4((_sc)->res[0], _reg, _val)
87 #define MAC_RESET_TIMEOUT 100
88 #define WATCHDOG_TIMEOUT_SECS 5
89 #define STATS_HARVEST_INTERVAL 2
91 #define DWC_LOCK(sc) mtx_lock(&(sc)->mtx)
92 #define DWC_UNLOCK(sc) mtx_unlock(&(sc)->mtx)
93 #define DWC_ASSERT_LOCKED(sc) mtx_assert(&(sc)->mtx, MA_OWNED)
94 #define DWC_ASSERT_UNLOCKED(sc) mtx_assert(&(sc)->mtx, MA_NOTOWNED)
96 /* TX descriptors - TDESC0 is almost unified */
97 #define TDESC0_OWN (1U << 31)
98 #define TDESC0_IHE (1U << 16) /* IP Header Error */
99 #define TDESC0_ES (1U << 15) /* Error Summary */
100 #define TDESC0_JT (1U << 14) /* Jabber Timeout */
101 #define TDESC0_FF (1U << 13) /* Frame Flushed */
102 #define TDESC0_PCE (1U << 12) /* Payload Checksum Error */
103 #define TDESC0_LOC (1U << 11) /* Loss of Carrier */
104 #define TDESC0_NC (1U << 10) /* No Carrier */
105 #define TDESC0_LC (1U << 9) /* Late Collision */
106 #define TDESC0_EC (1U << 8) /* Excessive Collision */
107 #define TDESC0_VF (1U << 7) /* VLAN Frame */
108 #define TDESC0_CC_MASK 0xf
109 #define TDESC0_CC_SHIFT 3 /* Collision Count */
110 #define TDESC0_ED (1U << 2) /* Excessive Deferral */
111 #define TDESC0_UF (1U << 1) /* Underflow Error */
112 #define TDESC0_DB (1U << 0) /* Deferred Bit */
113 /* TX descriptors - TDESC0 extended format only */
114 #define ETDESC0_IC (1U << 30) /* Interrupt on Completion */
115 #define ETDESC0_LS (1U << 29) /* Last Segment */
116 #define ETDESC0_FS (1U << 28) /* First Segment */
117 #define ETDESC0_DC (1U << 27) /* Disable CRC */
118 #define ETDESC0_DP (1U << 26) /* Disable Padding */
119 #define ETDESC0_CIC_NONE (0U << 22) /* Checksum Insertion Control */
120 #define ETDESC0_CIC_HDR (1U << 22)
121 #define ETDESC0_CIC_SEG (2U << 22)
122 #define ETDESC0_CIC_FULL (3U << 22)
123 #define ETDESC0_TER (1U << 21) /* Transmit End of Ring */
124 #define ETDESC0_TCH (1U << 20) /* Second Address Chained */
126 /* TX descriptors - TDESC1 normal format */
127 #define NTDESC1_IC (1U << 31) /* Interrupt on Completion */
128 #define NTDESC1_LS (1U << 30) /* Last Segment */
129 #define NTDESC1_FS (1U << 29) /* First Segment */
130 #define NTDESC1_CIC_NONE (0U << 27) /* Checksum Insertion Control */
131 #define NTDESC1_CIC_HDR (1U << 27)
132 #define NTDESC1_CIC_SEG (2U << 27)
133 #define NTDESC1_CIC_FULL (3U << 27)
134 #define NTDESC1_DC (1U << 26) /* Disable CRC */
135 #define NTDESC1_TER (1U << 25) /* Transmit End of Ring */
136 #define NTDESC1_TCH (1U << 24) /* Second Address Chained */
137 /* TX descriptors - TDESC1 extended format */
138 #define ETDESC1_DP (1U << 23) /* Disable Padding */
139 #define ETDESC1_TBS2_MASK 0x7ff
140 #define ETDESC1_TBS2_SHIFT 11 /* Receive Buffer 2 Size */
141 #define ETDESC1_TBS1_MASK 0x7ff
142 #define ETDESC1_TBS1_SHIFT 0 /* Receive Buffer 1 Size */
144 /* RX descriptor - RDESC0 is unified */
145 #define RDESC0_OWN (1U << 31)
146 #define RDESC0_AFM (1U << 30) /* Dest. Address Filter Fail */
147 #define RDESC0_FL_MASK 0x3fff
148 #define RDESC0_FL_SHIFT 16 /* Frame Length */
149 #define RDESC0_ES (1U << 15) /* Error Summary */
150 #define RDESC0_DE (1U << 14) /* Descriptor Error */
151 #define RDESC0_SAF (1U << 13) /* Source Address Filter Fail */
152 #define RDESC0_LE (1U << 12) /* Length Error */
153 #define RDESC0_OE (1U << 11) /* Overflow Error */
154 #define RDESC0_VLAN (1U << 10) /* VLAN Tag */
155 #define RDESC0_FS (1U << 9) /* First Descriptor */
156 #define RDESC0_LS (1U << 8) /* Last Descriptor */
157 #define RDESC0_ICE (1U << 7) /* IPC Checksum Error */
158 #define RDESC0_GF (1U << 7) /* Giant Frame */
159 #define RDESC0_LC (1U << 6) /* Late Collision */
160 #define RDESC0_FT (1U << 5) /* Frame Type */
161 #define RDESC0_RWT (1U << 4) /* Receive Watchdog Timeout */
162 #define RDESC0_RE (1U << 3) /* Receive Error */
163 #define RDESC0_DBE (1U << 2) /* Dribble Bit Error */
164 #define RDESC0_CE (1U << 1) /* CRC Error */
165 #define RDESC0_PCE (1U << 0) /* Payload Checksum Error */
166 #define RDESC0_RXMA (1U << 0) /* Rx MAC Address */
168 /* RX descriptors - RDESC1 normal format */
169 #define NRDESC1_DIC (1U << 31) /* Disable Intr on Completion */
170 #define NRDESC1_RER (1U << 25) /* Receive End of Ring */
171 #define NRDESC1_RCH (1U << 24) /* Second Address Chained */
172 #define NRDESC1_RBS2_MASK 0x7ff
173 #define NRDESC1_RBS2_SHIFT 11 /* Receive Buffer 2 Size */
174 #define NRDESC1_RBS1_MASK 0x7ff
175 #define NRDESC1_RBS1_SHIFT 0 /* Receive Buffer 1 Size */
177 /* RX descriptors - RDESC1 enhanced format */
178 #define ERDESC1_DIC (1U << 31) /* Disable Intr on Completion */
179 #define ERDESC1_RBS2_MASK 0x7ffff
180 #define ERDESC1_RBS2_SHIFT 16 /* Receive Buffer 2 Size */
181 #define ERDESC1_RER (1U << 15) /* Receive End of Ring */
182 #define ERDESC1_RCH (1U << 14) /* Second Address Chained */
183 #define ERDESC1_RBS1_MASK 0x7ffff
184 #define ERDESC1_RBS1_SHIFT 0 /* Receive Buffer 1 Size */
187 * A hardware buffer descriptor. Rx and Tx buffers have the same descriptor
188 * layout, but the bits in the fields have different meanings.
194 uint32_t addr1; /* ptr to first buffer data */
195 uint32_t addr2; /* ptr to next descriptor / second buffer data*/
199 struct dwc_hash_maddr_ctx {
200 struct dwc_softc *sc;
205 * The hardware imposes alignment restrictions on various objects involved in
206 * DMA transfers. These values are expressed in bytes (not bits).
208 #define DWC_DESC_RING_ALIGN 2048
210 static struct resource_spec dwc_spec[] = {
211 { SYS_RES_MEMORY, 0, RF_ACTIVE },
212 { SYS_RES_IRQ, 0, RF_ACTIVE },
216 static void dwc_txfinish_locked(struct dwc_softc *sc);
217 static void dwc_rxfinish_locked(struct dwc_softc *sc);
218 static void dwc_stop_locked(struct dwc_softc *sc);
219 static void dwc_setup_rxfilter(struct dwc_softc *sc);
220 static void dwc_setup_core(struct dwc_softc *sc);
221 static void dwc_enable_mac(struct dwc_softc *sc, bool enable);
222 static void dwc_init_dma(struct dwc_softc *sc);
223 static void dwc_stop_dma(struct dwc_softc *sc);
225 static void dwc_tick(void *arg);
232 dwc_miibus_read_reg(device_t dev, int phy, int reg)
234 struct dwc_softc *sc;
239 sc = device_get_softc(dev);
241 mii = ((phy & GMII_ADDRESS_PA_MASK) << GMII_ADDRESS_PA_SHIFT)
242 | ((reg & GMII_ADDRESS_GR_MASK) << GMII_ADDRESS_GR_SHIFT)
243 | (sc->mii_clk << GMII_ADDRESS_CR_SHIFT)
244 | GMII_ADDRESS_GB; /* Busy flag */
246 WRITE4(sc, GMII_ADDRESS, mii);
248 for (cnt = 0; cnt < 1000; cnt++) {
249 if (!(READ4(sc, GMII_ADDRESS) & GMII_ADDRESS_GB)) {
250 rv = READ4(sc, GMII_DATA);
260 dwc_miibus_write_reg(device_t dev, int phy, int reg, int val)
262 struct dwc_softc *sc;
266 sc = device_get_softc(dev);
268 mii = ((phy & GMII_ADDRESS_PA_MASK) << GMII_ADDRESS_PA_SHIFT)
269 | ((reg & GMII_ADDRESS_GR_MASK) << GMII_ADDRESS_GR_SHIFT)
270 | (sc->mii_clk << GMII_ADDRESS_CR_SHIFT)
271 | GMII_ADDRESS_GB | GMII_ADDRESS_GW;
273 WRITE4(sc, GMII_DATA, val);
274 WRITE4(sc, GMII_ADDRESS, mii);
276 for (cnt = 0; cnt < 1000; cnt++) {
277 if (!(READ4(sc, GMII_ADDRESS) & GMII_ADDRESS_GB)) {
287 dwc_miibus_statchg(device_t dev)
289 struct dwc_softc *sc;
290 struct mii_data *mii;
294 * Called by the MII bus driver when the PHY establishes
295 * link to set the MAC interface registers.
298 sc = device_get_softc(dev);
300 DWC_ASSERT_LOCKED(sc);
304 if (mii->mii_media_status & IFM_ACTIVE)
305 sc->link_is_up = true;
307 sc->link_is_up = false;
309 reg = READ4(sc, MAC_CONFIGURATION);
310 switch (IFM_SUBTYPE(mii->mii_media_active)) {
313 reg &= ~(CONF_FES | CONF_PS);
316 reg |= (CONF_FES | CONF_PS);
323 sc->link_is_up = false;
326 sc->link_is_up = false;
327 device_printf(dev, "Unsupported media %u\n",
328 IFM_SUBTYPE(mii->mii_media_active));
331 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0)
335 WRITE4(sc, MAC_CONFIGURATION, reg);
337 IF_DWC_SET_SPEED(dev, IFM_SUBTYPE(mii->mii_media_active));
346 dwc_media_status(struct ifnet * ifp, struct ifmediareq *ifmr)
348 struct dwc_softc *sc;
349 struct mii_data *mii;
355 ifmr->ifm_active = mii->mii_media_active;
356 ifmr->ifm_status = mii->mii_media_status;
361 dwc_media_change_locked(struct dwc_softc *sc)
364 return (mii_mediachg(sc->mii_softc));
368 dwc_media_change(struct ifnet * ifp)
370 struct dwc_softc *sc;
376 error = dwc_media_change_locked(sc);
385 static const uint8_t nibbletab[] = {
386 /* 0x0 0000 -> 0000 */ 0x0,
387 /* 0x1 0001 -> 1000 */ 0x8,
388 /* 0x2 0010 -> 0100 */ 0x4,
389 /* 0x3 0011 -> 1100 */ 0xc,
390 /* 0x4 0100 -> 0010 */ 0x2,
391 /* 0x5 0101 -> 1010 */ 0xa,
392 /* 0x6 0110 -> 0110 */ 0x6,
393 /* 0x7 0111 -> 1110 */ 0xe,
394 /* 0x8 1000 -> 0001 */ 0x1,
395 /* 0x9 1001 -> 1001 */ 0x9,
396 /* 0xa 1010 -> 0101 */ 0x5,
397 /* 0xb 1011 -> 1101 */ 0xd,
398 /* 0xc 1100 -> 0011 */ 0x3,
399 /* 0xd 1101 -> 1011 */ 0xb,
400 /* 0xe 1110 -> 0111 */ 0x7,
401 /* 0xf 1111 -> 1111 */ 0xf, };
404 bitreverse(uint8_t x)
407 return (nibbletab[x & 0xf] << 4) | nibbletab[x >> 4];
411 dwc_hash_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt)
413 struct dwc_hash_maddr_ctx *ctx = arg;
414 uint32_t crc, hashbit, hashreg;
417 crc = ether_crc32_le(LLADDR(sdl), ETHER_ADDR_LEN);
418 /* Take lower 8 bits and reverse it */
419 val = bitreverse(~crc & 0xff);
420 if (ctx->sc->mactype != DWC_GMAC_EXT_DESC)
421 val >>= 2; /* Only need lower 6 bits */
422 hashreg = (val >> 5);
423 hashbit = (val & 31);
424 ctx->hash[hashreg] |= (1 << hashbit);
430 dwc_setup_rxfilter(struct dwc_softc *sc)
432 struct dwc_hash_maddr_ctx ctx;
435 uint32_t ffval, hi, lo;
438 DWC_ASSERT_LOCKED(sc);
441 nhash = sc->mactype != DWC_GMAC_EXT_DESC ? 2 : 8;
444 * Set the multicast (group) filter hash.
446 if ((ifp->if_flags & IFF_ALLMULTI) != 0) {
447 ffval = (FRAME_FILTER_PM);
448 for (i = 0; i < nhash; i++)
451 ffval = (FRAME_FILTER_HMC);
452 for (i = 0; i < nhash; i++)
455 if_foreach_llmaddr(ifp, dwc_hash_maddr, &ctx);
459 * Set the individual address filter hash.
461 if (ifp->if_flags & IFF_PROMISC)
462 ffval |= (FRAME_FILTER_PR);
465 * Set the primary address.
467 eaddr = IF_LLADDR(ifp);
468 lo = eaddr[0] | (eaddr[1] << 8) | (eaddr[2] << 16) |
470 hi = eaddr[4] | (eaddr[5] << 8);
471 WRITE4(sc, MAC_ADDRESS_LOW(0), lo);
472 WRITE4(sc, MAC_ADDRESS_HIGH(0), hi);
473 WRITE4(sc, MAC_FRAME_FILTER, ffval);
474 if (sc->mactype != DWC_GMAC_EXT_DESC) {
475 WRITE4(sc, GMAC_MAC_HTLOW, ctx.hash[0]);
476 WRITE4(sc, GMAC_MAC_HTHIGH, ctx.hash[1]);
478 for (i = 0; i < nhash; i++)
479 WRITE4(sc, HASH_TABLE_REG(i), ctx.hash[i]);
484 dwc_setup_core(struct dwc_softc *sc)
488 DWC_ASSERT_LOCKED(sc);
491 reg = READ4(sc, MAC_CONFIGURATION);
492 reg |= (CONF_JD | CONF_ACS | CONF_BE);
493 WRITE4(sc, MAC_CONFIGURATION, reg);
497 dwc_enable_mac(struct dwc_softc *sc, bool enable)
501 DWC_ASSERT_LOCKED(sc);
502 reg = READ4(sc, MAC_CONFIGURATION);
504 reg |= CONF_TE | CONF_RE;
506 reg &= ~(CONF_TE | CONF_RE);
507 WRITE4(sc, MAC_CONFIGURATION, reg);
511 dwc_get_hwaddr(struct dwc_softc *sc, uint8_t *hwaddr)
513 uint32_t hi, lo, rnd;
516 * Try to recover a MAC address from the running hardware. If there's
517 * something non-zero there, assume the bootloader did the right thing
520 * Otherwise, set the address to a convenient locally assigned address,
521 * 'bsd' + random 24 low-order bits. 'b' is 0x62, which has the locally
522 * assigned bit set, and the broadcast/multicast bit clear.
524 lo = READ4(sc, MAC_ADDRESS_LOW(0));
525 hi = READ4(sc, MAC_ADDRESS_HIGH(0)) & 0xffff;
526 if ((lo != 0xffffffff) || (hi != 0xffff)) {
527 hwaddr[0] = (lo >> 0) & 0xff;
528 hwaddr[1] = (lo >> 8) & 0xff;
529 hwaddr[2] = (lo >> 16) & 0xff;
530 hwaddr[3] = (lo >> 24) & 0xff;
531 hwaddr[4] = (hi >> 0) & 0xff;
532 hwaddr[5] = (hi >> 8) & 0xff;
534 rnd = arc4random() & 0x00ffffff;
538 hwaddr[3] = rnd >> 16;
539 hwaddr[4] = rnd >> 8;
540 hwaddr[5] = rnd >> 0;
549 dwc_init_dma(struct dwc_softc *sc)
553 DWC_ASSERT_LOCKED(sc);
555 /* Initializa DMA and enable transmitters */
556 reg = READ4(sc, OPERATION_MODE);
557 reg |= (MODE_TSF | MODE_OSF | MODE_FUF);
559 reg |= (MODE_RTC_LEV32 << MODE_RTC_SHIFT);
560 WRITE4(sc, OPERATION_MODE, reg);
562 WRITE4(sc, INTERRUPT_ENABLE, INT_EN_DEFAULT);
565 reg = READ4(sc, OPERATION_MODE);
566 reg |= (MODE_ST | MODE_SR);
567 WRITE4(sc, OPERATION_MODE, reg);
571 dwc_stop_dma(struct dwc_softc *sc)
575 DWC_ASSERT_LOCKED(sc);
578 reg = READ4(sc, OPERATION_MODE);
580 WRITE4(sc, OPERATION_MODE, reg);
583 reg = READ4(sc, OPERATION_MODE);
585 WRITE4(sc, OPERATION_MODE, reg);
588 reg = READ4(sc, OPERATION_MODE);
590 WRITE4(sc, OPERATION_MODE, reg);
593 static inline uint32_t
594 next_rxidx(struct dwc_softc *sc, uint32_t curidx)
597 return ((curidx + 1) % RX_DESC_COUNT);
600 static inline uint32_t
601 next_txidx(struct dwc_softc *sc, uint32_t curidx)
604 return ((curidx + 1) % TX_DESC_COUNT);
608 dwc_get1paddr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
613 *(bus_addr_t *)arg = segs[0].ds_addr;
617 dwc_setup_txdesc(struct dwc_softc *sc, int idx, bus_addr_t paddr,
620 uint32_t desc0, desc1;
622 /* Addr/len 0 means we're clearing the descriptor after xmit done. */
623 if (paddr == 0 || len == 0) {
628 if (sc->mactype != DWC_GMAC_EXT_DESC) {
630 desc1 = NTDESC1_TCH | NTDESC1_FS | NTDESC1_LS |
633 desc0 = ETDESC0_TCH | ETDESC0_FS | ETDESC0_LS |
640 sc->txdesc_ring[idx].addr1 = (uint32_t)(paddr);
641 sc->txdesc_ring[idx].desc0 = desc0;
642 sc->txdesc_ring[idx].desc1 = desc1;
646 sc->txdesc_ring[idx].desc0 |= TDESC0_OWN;
652 dwc_setup_txbuf(struct dwc_softc *sc, int idx, struct mbuf **mp)
654 struct bus_dma_segment seg;
658 if ((m = m_defrag(*mp, M_NOWAIT)) == NULL)
662 error = bus_dmamap_load_mbuf_sg(sc->txbuf_tag, sc->txbuf_map[idx].map,
668 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
670 bus_dmamap_sync(sc->txbuf_tag, sc->txbuf_map[idx].map,
671 BUS_DMASYNC_PREWRITE);
673 sc->txbuf_map[idx].mbuf = m;
675 dwc_setup_txdesc(sc, idx, seg.ds_addr, seg.ds_len);
680 inline static uint32_t
681 dwc_setup_rxdesc(struct dwc_softc *sc, int idx, bus_addr_t paddr)
685 sc->rxdesc_ring[idx].addr1 = (uint32_t)paddr;
686 nidx = next_rxidx(sc, idx);
687 sc->rxdesc_ring[idx].addr2 = sc->rxdesc_ring_paddr +
688 (nidx * sizeof(struct dwc_hwdesc));
689 if (sc->mactype != DWC_GMAC_EXT_DESC)
690 sc->rxdesc_ring[idx].desc1 = NRDESC1_RCH |
691 MIN(MCLBYTES, NRDESC1_RBS1_MASK);
693 sc->rxdesc_ring[idx].desc1 = ERDESC1_RCH |
694 MIN(MCLBYTES, ERDESC1_RBS1_MASK);
697 sc->rxdesc_ring[idx].desc0 = RDESC0_OWN;
703 dwc_setup_rxbuf(struct dwc_softc *sc, int idx, struct mbuf *m)
705 struct bus_dma_segment seg;
708 m_adj(m, ETHER_ALIGN);
710 error = bus_dmamap_load_mbuf_sg(sc->rxbuf_tag, sc->rxbuf_map[idx].map,
715 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
717 bus_dmamap_sync(sc->rxbuf_tag, sc->rxbuf_map[idx].map,
718 BUS_DMASYNC_PREREAD);
720 sc->rxbuf_map[idx].mbuf = m;
721 dwc_setup_rxdesc(sc, idx, seg.ds_addr);
727 dwc_alloc_mbufcl(struct dwc_softc *sc)
731 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
733 m->m_pkthdr.len = m->m_len = m->m_ext.ext_size;
739 dwc_rxfinish_one(struct dwc_softc *sc, struct dwc_hwdesc *desc,
740 struct dwc_bufmap *map)
749 rdesc0 = desc ->desc0;
750 /* Validate descriptor. */
751 if (rdesc0 & RDESC0_ES) {
753 * Errored packet. Statistic counters are updated
754 * globally, so do nothing
759 if ((rdesc0 & (RDESC0_FS | RDESC0_LS)) !=
760 (RDESC0_FS | RDESC0_LS)) {
762 * Something very wrong happens. The whole packet should be
763 * recevied in one descriptr. Report problem.
765 device_printf(sc->dev,
766 "%s: RX descriptor without FIRST and LAST bit set: 0x%08X",
771 len = (rdesc0 >> RDESC0_FL_SHIFT) & RDESC0_FL_MASK;
774 * Lenght is invalid, recycle old mbuf
775 * Probably impossible case
780 /* Allocate new buffer */
781 m0 = dwc_alloc_mbufcl(sc);
783 /* no new mbuf available, recycle old */
784 if_inc_counter(sc->ifp, IFCOUNTER_IQDROPS, 1);
787 /* Do dmasync for newly received packet */
788 bus_dmamap_sync(sc->rxbuf_tag, map->map, BUS_DMASYNC_POSTREAD);
789 bus_dmamap_unload(sc->rxbuf_tag, map->map);
791 /* Received packet is valid, process it */
792 m->m_pkthdr.rcvif = ifp;
793 m->m_pkthdr.len = len;
795 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
797 /* Remove trailing FCS */
798 m_adj(m, -ETHER_CRC_LEN);
801 (*ifp->if_input)(ifp, m);
807 setup_dma(struct dwc_softc *sc)
815 * Set up TX descriptor ring, descriptors, and dma maps.
817 error = bus_dma_tag_create(
818 bus_get_dma_tag(sc->dev), /* Parent tag. */
819 DWC_DESC_RING_ALIGN, 0, /* alignment, boundary */
820 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
821 BUS_SPACE_MAXADDR, /* highaddr */
822 NULL, NULL, /* filter, filterarg */
823 TX_DESC_SIZE, 1, /* maxsize, nsegments */
824 TX_DESC_SIZE, /* maxsegsize */
826 NULL, NULL, /* lockfunc, lockarg */
829 device_printf(sc->dev,
830 "could not create TX ring DMA tag.\n");
834 error = bus_dmamem_alloc(sc->txdesc_tag, (void**)&sc->txdesc_ring,
835 BUS_DMA_COHERENT | BUS_DMA_WAITOK | BUS_DMA_ZERO,
838 device_printf(sc->dev,
839 "could not allocate TX descriptor ring.\n");
843 error = bus_dmamap_load(sc->txdesc_tag, sc->txdesc_map,
844 sc->txdesc_ring, TX_DESC_SIZE, dwc_get1paddr,
845 &sc->txdesc_ring_paddr, 0);
847 device_printf(sc->dev,
848 "could not load TX descriptor ring map.\n");
852 for (idx = 0; idx < TX_DESC_COUNT; idx++) {
853 nidx = next_txidx(sc, idx);
854 sc->txdesc_ring[idx].addr2 = sc->txdesc_ring_paddr +
855 (nidx * sizeof(struct dwc_hwdesc));
858 error = bus_dma_tag_create(
859 bus_get_dma_tag(sc->dev), /* Parent tag. */
860 1, 0, /* alignment, boundary */
861 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
862 BUS_SPACE_MAXADDR, /* highaddr */
863 NULL, NULL, /* filter, filterarg */
864 MCLBYTES, 1, /* maxsize, nsegments */
865 MCLBYTES, /* maxsegsize */
867 NULL, NULL, /* lockfunc, lockarg */
870 device_printf(sc->dev,
871 "could not create TX ring DMA tag.\n");
875 for (idx = 0; idx < TX_DESC_COUNT; idx++) {
876 error = bus_dmamap_create(sc->txbuf_tag, BUS_DMA_COHERENT,
877 &sc->txbuf_map[idx].map);
879 device_printf(sc->dev,
880 "could not create TX buffer DMA map.\n");
883 dwc_setup_txdesc(sc, idx, 0, 0);
887 * Set up RX descriptor ring, descriptors, dma maps, and mbufs.
889 error = bus_dma_tag_create(
890 bus_get_dma_tag(sc->dev), /* Parent tag. */
891 DWC_DESC_RING_ALIGN, 0, /* alignment, boundary */
892 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
893 BUS_SPACE_MAXADDR, /* highaddr */
894 NULL, NULL, /* filter, filterarg */
895 RX_DESC_SIZE, 1, /* maxsize, nsegments */
896 RX_DESC_SIZE, /* maxsegsize */
898 NULL, NULL, /* lockfunc, lockarg */
901 device_printf(sc->dev,
902 "could not create RX ring DMA tag.\n");
906 error = bus_dmamem_alloc(sc->rxdesc_tag, (void **)&sc->rxdesc_ring,
907 BUS_DMA_COHERENT | BUS_DMA_WAITOK | BUS_DMA_ZERO,
910 device_printf(sc->dev,
911 "could not allocate RX descriptor ring.\n");
915 error = bus_dmamap_load(sc->rxdesc_tag, sc->rxdesc_map,
916 sc->rxdesc_ring, RX_DESC_SIZE, dwc_get1paddr,
917 &sc->rxdesc_ring_paddr, 0);
919 device_printf(sc->dev,
920 "could not load RX descriptor ring map.\n");
924 error = bus_dma_tag_create(
925 bus_get_dma_tag(sc->dev), /* Parent tag. */
926 1, 0, /* alignment, boundary */
927 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
928 BUS_SPACE_MAXADDR, /* highaddr */
929 NULL, NULL, /* filter, filterarg */
930 MCLBYTES, 1, /* maxsize, nsegments */
931 MCLBYTES, /* maxsegsize */
933 NULL, NULL, /* lockfunc, lockarg */
936 device_printf(sc->dev,
937 "could not create RX buf DMA tag.\n");
941 for (idx = 0; idx < RX_DESC_COUNT; idx++) {
942 error = bus_dmamap_create(sc->rxbuf_tag, BUS_DMA_COHERENT,
943 &sc->rxbuf_map[idx].map);
945 device_printf(sc->dev,
946 "could not create RX buffer DMA map.\n");
949 if ((m = dwc_alloc_mbufcl(sc)) == NULL) {
950 device_printf(sc->dev, "Could not alloc mbuf\n");
954 if ((error = dwc_setup_rxbuf(sc, idx, m)) != 0) {
955 device_printf(sc->dev,
956 "could not create new RX buffer.\n");
973 dwc_txstart_locked(struct dwc_softc *sc)
979 DWC_ASSERT_LOCKED(sc);
986 if ((if_getdrvflags(ifp) & (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)) !=
993 if (sc->txcount == (TX_DESC_COUNT - 1)) {
994 if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, 0);
1001 if (dwc_setup_txbuf(sc, sc->tx_idx_head, &m) != 0) {
1002 if_sendq_prepend(ifp, m);
1006 sc->tx_idx_head = next_txidx(sc, sc->tx_idx_head);
1010 if (enqueued != 0) {
1011 WRITE4(sc, TRANSMIT_POLL_DEMAND, 0x1);
1012 sc->tx_watchdog_count = WATCHDOG_TIMEOUT_SECS;
1017 dwc_txstart(struct ifnet *ifp)
1019 struct dwc_softc *sc = ifp->if_softc;
1022 dwc_txstart_locked(sc);
1027 dwc_init_locked(struct dwc_softc *sc)
1029 struct ifnet *ifp = sc->ifp;
1031 DWC_ASSERT_LOCKED(sc);
1033 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING)
1036 dwc_setup_rxfilter(sc);
1038 dwc_enable_mac(sc, true);
1041 if_setdrvflagbits(ifp, IFF_DRV_RUNNING, IFF_DRV_OACTIVE);
1044 * Call mii_mediachg() which will call back into dwc_miibus_statchg()
1045 * to set up the remaining config registers based on current media.
1047 mii_mediachg(sc->mii_softc);
1048 callout_reset(&sc->dwc_callout, hz, dwc_tick, sc);
1052 dwc_init(void *if_softc)
1054 struct dwc_softc *sc = if_softc;
1057 dwc_init_locked(sc);
1062 dwc_stop_locked(struct dwc_softc *sc)
1066 DWC_ASSERT_LOCKED(sc);
1069 if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1070 sc->tx_watchdog_count = 0;
1071 sc->stats_harvest_count = 0;
1073 callout_stop(&sc->dwc_callout);
1076 dwc_enable_mac(sc, false);
1080 dwc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1082 struct dwc_softc *sc;
1083 struct mii_data *mii;
1085 int flags, mask, error;
1088 ifr = (struct ifreq *)data;
1094 if (if_getflags(ifp) & IFF_UP) {
1095 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
1096 flags = if_getflags(ifp) ^ sc->if_flags;
1097 if ((flags & (IFF_PROMISC|IFF_ALLMULTI)) != 0)
1098 dwc_setup_rxfilter(sc);
1100 if (!sc->is_detaching)
1101 dwc_init_locked(sc);
1104 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING)
1105 dwc_stop_locked(sc);
1107 sc->if_flags = if_getflags(ifp);
1112 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
1114 dwc_setup_rxfilter(sc);
1120 mii = sc->mii_softc;
1121 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
1124 mask = ifr->ifr_reqcap ^ if_getcapenable(ifp);
1125 if (mask & IFCAP_VLAN_MTU) {
1126 /* No work to do except acknowledge the change took */
1127 if_togglecapenable(ifp, IFCAP_VLAN_MTU);
1132 error = ether_ioctl(ifp, cmd, data);
1140 * Interrupts functions
1144 dwc_txfinish_locked(struct dwc_softc *sc)
1146 struct dwc_bufmap *bmap;
1147 struct dwc_hwdesc *desc;
1150 DWC_ASSERT_LOCKED(sc);
1153 while (sc->tx_idx_tail != sc->tx_idx_head) {
1154 desc = &sc->txdesc_ring[sc->tx_idx_tail];
1155 if ((desc->desc0 & TDESC0_OWN) != 0)
1157 bmap = &sc->txbuf_map[sc->tx_idx_tail];
1158 bus_dmamap_sync(sc->txbuf_tag, bmap->map,
1159 BUS_DMASYNC_POSTWRITE);
1160 bus_dmamap_unload(sc->txbuf_tag, bmap->map);
1161 m_freem(bmap->mbuf);
1163 dwc_setup_txdesc(sc, sc->tx_idx_tail, 0, 0);
1164 sc->tx_idx_tail = next_txidx(sc, sc->tx_idx_tail);
1165 if_setdrvflagbits(ifp, 0, IFF_DRV_OACTIVE);
1166 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
1169 /* If there are no buffers outstanding, muzzle the watchdog. */
1170 if (sc->tx_idx_tail == sc->tx_idx_head) {
1171 sc->tx_watchdog_count = 0;
1176 dwc_rxfinish_locked(struct dwc_softc *sc)
1181 struct dwc_hwdesc *desc;
1183 DWC_ASSERT_LOCKED(sc);
1187 desc = sc->rxdesc_ring + idx;
1188 if ((desc->desc0 & RDESC0_OWN) != 0)
1191 m = dwc_rxfinish_one(sc, desc, sc->rxbuf_map + idx);
1194 desc->desc0 = RDESC0_OWN;
1197 /* We cannot create hole in RX ring */
1198 error = dwc_setup_rxbuf(sc, idx, m);
1200 panic("dwc_setup_rxbuf failed: error %d\n",
1203 sc->rx_idx = next_rxidx(sc, sc->rx_idx);
1210 struct dwc_softc *sc;
1217 reg = READ4(sc, INTERRUPT_STATUS);
1219 READ4(sc, SGMII_RGMII_SMII_CTRL_STATUS);
1221 reg = READ4(sc, DMA_STATUS);
1222 if (reg & DMA_STATUS_NIS) {
1223 if (reg & DMA_STATUS_RI)
1224 dwc_rxfinish_locked(sc);
1226 if (reg & DMA_STATUS_TI) {
1227 dwc_txfinish_locked(sc);
1228 dwc_txstart_locked(sc);
1232 if (reg & DMA_STATUS_AIS) {
1233 if (reg & DMA_STATUS_FBI) {
1234 /* Fatal bus error */
1235 device_printf(sc->dev,
1236 "Ethernet DMA error, restarting controller.\n");
1237 dwc_stop_locked(sc);
1238 dwc_init_locked(sc);
1242 WRITE4(sc, DMA_STATUS, reg & DMA_STATUS_INTR_MASK);
1250 static void dwc_clear_stats(struct dwc_softc *sc)
1254 reg = READ4(sc, MMC_CONTROL);
1255 reg |= (MMC_CONTROL_CNTRST);
1256 WRITE4(sc, MMC_CONTROL, reg);
1260 dwc_harvest_stats(struct dwc_softc *sc)
1264 /* We don't need to harvest too often. */
1265 if (++sc->stats_harvest_count < STATS_HARVEST_INTERVAL)
1268 sc->stats_harvest_count = 0;
1271 if_inc_counter(ifp, IFCOUNTER_IPACKETS, READ4(sc, RXFRAMECOUNT_GB));
1272 if_inc_counter(ifp, IFCOUNTER_IMCASTS, READ4(sc, RXMULTICASTFRAMES_G));
1273 if_inc_counter(ifp, IFCOUNTER_IERRORS,
1274 READ4(sc, RXOVERSIZE_G) + READ4(sc, RXUNDERSIZE_G) +
1275 READ4(sc, RXCRCERROR) + READ4(sc, RXALIGNMENTERROR) +
1276 READ4(sc, RXRUNTERROR) + READ4(sc, RXJABBERERROR) +
1277 READ4(sc, RXLENGTHERROR));
1279 if_inc_counter(ifp, IFCOUNTER_OPACKETS, READ4(sc, TXFRAMECOUNT_G));
1280 if_inc_counter(ifp, IFCOUNTER_OMCASTS, READ4(sc, TXMULTICASTFRAMES_G));
1281 if_inc_counter(ifp, IFCOUNTER_OERRORS,
1282 READ4(sc, TXOVERSIZE_G) + READ4(sc, TXEXCESSDEF) +
1283 READ4(sc, TXCARRIERERR) + READ4(sc, TXUNDERFLOWERROR));
1285 if_inc_counter(ifp, IFCOUNTER_COLLISIONS,
1286 READ4(sc, TXEXESSCOL) + READ4(sc, TXLATECOL));
1288 dwc_clear_stats(sc);
1294 struct dwc_softc *sc;
1300 DWC_ASSERT_LOCKED(sc);
1304 if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) == 0)
1308 * Typical tx watchdog. If this fires it indicates that we enqueued
1309 * packets for output and never got a txdone interrupt for them. Maybe
1310 * it's a missed interrupt somehow, just pretend we got one.
1312 if (sc->tx_watchdog_count > 0) {
1313 if (--sc->tx_watchdog_count == 0) {
1314 dwc_txfinish_locked(sc);
1318 /* Gather stats from hardware counters. */
1319 dwc_harvest_stats(sc);
1321 /* Check the media status. */
1322 link_was_up = sc->link_is_up;
1323 mii_tick(sc->mii_softc);
1324 if (sc->link_is_up && !link_was_up)
1325 dwc_txstart_locked(sc);
1327 /* Schedule another check one second from now. */
1328 callout_reset(&sc->dwc_callout, hz, dwc_tick, sc);
1332 * Probe/Attach functions
1335 #define GPIO_ACTIVE_LOW 1
1338 dwc_reset(device_t dev)
1340 pcell_t gpio_prop[4];
1341 pcell_t delay_prop[3];
1342 phandle_t node, gpio_node;
1344 uint32_t pin, flags;
1347 node = ofw_bus_get_node(dev);
1348 if (OF_getencprop(node, "snps,reset-gpio",
1349 gpio_prop, sizeof(gpio_prop)) <= 0)
1352 if (OF_getencprop(node, "snps,reset-delays-us",
1353 delay_prop, sizeof(delay_prop)) <= 0) {
1355 "Wrong property for snps,reset-delays-us");
1359 gpio_node = OF_node_from_xref(gpio_prop[0]);
1360 if ((gpio = OF_device_from_xref(gpio_prop[0])) == NULL) {
1362 "Can't find gpio controller for phy reset\n");
1366 if (GPIO_MAP_GPIOS(gpio, node, gpio_node,
1367 nitems(gpio_prop) - 1,
1368 gpio_prop + 1, &pin, &flags) != 0) {
1369 device_printf(dev, "Can't map gpio for phy reset\n");
1373 pin_value = GPIO_PIN_LOW;
1374 if (OF_hasprop(node, "snps,reset-active-low"))
1375 pin_value = GPIO_PIN_HIGH;
1377 GPIO_PIN_SETFLAGS(gpio, pin, GPIO_PIN_OUTPUT);
1378 GPIO_PIN_SET(gpio, pin, pin_value);
1379 DELAY(delay_prop[0] * 5);
1380 GPIO_PIN_SET(gpio, pin, !pin_value);
1381 DELAY(delay_prop[1] * 5);
1382 GPIO_PIN_SET(gpio, pin, pin_value);
1383 DELAY(delay_prop[2] * 5);
1388 #ifdef EXT_RESOURCES
1390 dwc_clock_init(device_t dev)
1398 if (clk_get_by_ofw_name(dev, 0, "stmmaceth", &clk) == 0) {
1399 error = clk_enable(clk);
1401 device_printf(dev, "could not enable main clock\n");
1405 clk_get_freq(clk, &freq);
1406 device_printf(dev, "MAC clock(%s) freq: %jd\n",
1407 clk_get_name(clk), (intmax_t)freq);
1411 device_printf(dev, "could not find clock stmmaceth\n");
1414 /* De-assert reset */
1415 if (hwreset_get_by_ofw_name(dev, 0, "stmmaceth", &rst) == 0) {
1416 error = hwreset_deassert(rst);
1418 device_printf(dev, "could not de-assert reset\n");
1428 dwc_probe(device_t dev)
1431 if (!ofw_bus_status_okay(dev))
1434 if (!ofw_bus_is_compatible(dev, "snps,dwmac"))
1437 device_set_desc(dev, "Gigabit Ethernet Controller");
1438 return (BUS_PROBE_DEFAULT);
1442 dwc_attach(device_t dev)
1444 uint8_t macaddr[ETHER_ADDR_LEN];
1445 struct dwc_softc *sc;
1452 sc = device_get_softc(dev);
1455 sc->txcount = TX_DESC_COUNT;
1456 sc->mii_clk = IF_DWC_MII_CLK(dev);
1457 sc->mactype = IF_DWC_MAC_TYPE(dev);
1459 node = ofw_bus_get_node(dev);
1460 if (OF_getprop_alloc(node, "phy-mode", (void **)&phy_mode)) {
1461 if (strcmp(phy_mode, "rgmii") == 0)
1462 sc->phy_mode = PHY_MODE_RGMII;
1463 if (strcmp(phy_mode, "rmii") == 0)
1464 sc->phy_mode = PHY_MODE_RMII;
1465 OF_prop_free(phy_mode);
1468 if (IF_DWC_INIT(dev) != 0)
1471 #ifdef EXT_RESOURCES
1472 if (dwc_clock_init(dev) != 0)
1476 if (bus_alloc_resources(dev, dwc_spec, sc->res)) {
1477 device_printf(dev, "could not allocate resources\n");
1481 /* Read MAC before reset */
1482 dwc_get_hwaddr(sc, macaddr);
1484 /* Reset the PHY if needed */
1485 if (dwc_reset(dev) != 0) {
1486 device_printf(dev, "Can't reset the PHY\n");
1491 reg = READ4(sc, BUS_MODE);
1492 reg |= (BUS_MODE_SWR);
1493 WRITE4(sc, BUS_MODE, reg);
1495 for (i = 0; i < MAC_RESET_TIMEOUT; i++) {
1496 if ((READ4(sc, BUS_MODE) & BUS_MODE_SWR) == 0)
1500 if (i >= MAC_RESET_TIMEOUT) {
1501 device_printf(sc->dev, "Can't reset DWC.\n");
1505 if (sc->mactype != DWC_GMAC_EXT_DESC) {
1506 reg = BUS_MODE_FIXEDBURST;
1507 reg |= (BUS_MODE_PRIORXTX_41 << BUS_MODE_PRIORXTX_SHIFT);
1509 reg = (BUS_MODE_EIGHTXPBL);
1510 reg |= (BUS_MODE_PBL_BEATS_8 << BUS_MODE_PBL_SHIFT);
1511 WRITE4(sc, BUS_MODE, reg);
1514 * DMA must be stop while changing descriptor list addresses.
1516 reg = READ4(sc, OPERATION_MODE);
1517 reg &= ~(MODE_ST | MODE_SR);
1518 WRITE4(sc, OPERATION_MODE, reg);
1523 /* Setup addresses */
1524 WRITE4(sc, RX_DESCR_LIST_ADDR, sc->rxdesc_ring_paddr);
1525 WRITE4(sc, TX_DESCR_LIST_ADDR, sc->txdesc_ring_paddr);
1527 mtx_init(&sc->mtx, device_get_nameunit(sc->dev),
1528 MTX_NETWORK_LOCK, MTX_DEF);
1530 callout_init_mtx(&sc->dwc_callout, &sc->mtx, 0);
1532 /* Setup interrupt handler. */
1533 error = bus_setup_intr(dev, sc->res[1], INTR_TYPE_NET | INTR_MPSAFE,
1534 NULL, dwc_intr, sc, &sc->intr_cookie);
1536 device_printf(dev, "could not setup interrupt handler.\n");
1540 /* Set up the ethernet interface. */
1541 sc->ifp = ifp = if_alloc(IFT_ETHER);
1544 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1545 if_setflags(sc->ifp, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
1546 if_setstartfn(ifp, dwc_txstart);
1547 if_setioctlfn(ifp, dwc_ioctl);
1548 if_setinitfn(ifp, dwc_init);
1549 if_setsendqlen(ifp, TX_DESC_COUNT - 1);
1550 if_setsendqready(sc->ifp);
1551 if_setcapabilities(sc->ifp, IFCAP_VLAN_MTU);
1552 if_setcapenable(sc->ifp, if_getcapabilities(sc->ifp));
1554 /* Attach the mii driver. */
1555 error = mii_attach(dev, &sc->miibus, ifp, dwc_media_change,
1556 dwc_media_status, BMSR_DEFCAPMASK, MII_PHY_ANY,
1560 device_printf(dev, "PHY attach failed\n");
1563 sc->mii_softc = device_get_softc(sc->miibus);
1565 /* All ready to run, attach the ethernet interface. */
1566 ether_ifattach(ifp, macaddr);
1567 sc->is_attached = true;
1572 static device_method_t dwc_methods[] = {
1573 DEVMETHOD(device_probe, dwc_probe),
1574 DEVMETHOD(device_attach, dwc_attach),
1577 DEVMETHOD(miibus_readreg, dwc_miibus_read_reg),
1578 DEVMETHOD(miibus_writereg, dwc_miibus_write_reg),
1579 DEVMETHOD(miibus_statchg, dwc_miibus_statchg),
1584 driver_t dwc_driver = {
1587 sizeof(struct dwc_softc),
1590 static devclass_t dwc_devclass;
1592 DRIVER_MODULE(dwc, simplebus, dwc_driver, dwc_devclass, 0, 0);
1593 DRIVER_MODULE(miibus, dwc, miibus_driver, miibus_devclass, 0, 0);
1595 MODULE_DEPEND(dwc, ether, 1, 1, 1);
1596 MODULE_DEPEND(dwc, miibus, 1, 1, 1);