2 * Copyright (c) 1997 Semen Ustimenko (semenu@FreeBSD.org)
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 * EtherPower II 10/100 Fast Ethernet (SMC 9432 serie)
33 * These cards are based on SMC83c17x (EPIC) chip and one of the various
34 * PHYs (QS6612, AC101 and LXT970 were seen). The media support depends on
35 * card model. All cards support 10baseT/UTP and 100baseTX half- and full-
36 * duplex (SMB9432TX). SMC9432BTX also supports 10baseT/BNC. SMC9432FTX also
37 * supports fibre optics.
39 * Thanks are going to Steve Bauer and Jason Wright.
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/sockio.h>
46 #include <sys/kernel.h>
47 #include <sys/module.h>
48 #include <sys/socket.h>
49 #include <sys/queue.h>
52 #include <net/if_arp.h>
53 #include <net/ethernet.h>
54 #include <net/if_dl.h>
55 #include <net/if_media.h>
59 #include <net/if_vlan_var.h>
61 #include <machine/bus_memio.h>
62 #include <machine/bus_pio.h>
63 #include <machine/bus.h>
64 #include <machine/resource.h>
65 #include <machine/clock.h> /* for DELAY */
69 #include <dev/pci/pcireg.h>
70 #include <dev/pci/pcivar.h>
72 #include <dev/mii/mii.h>
73 #include <dev/mii/miivar.h>
76 #include <dev/mii/lxtphyreg.h>
78 #include "miibus_if.h"
80 #include <dev/tx/if_txreg.h>
81 #include <dev/tx/if_txvar.h>
83 MODULE_DEPEND(tx, pci, 1, 1, 1);
84 MODULE_DEPEND(tx, ether, 1, 1, 1);
85 MODULE_DEPEND(tx, miibus, 1, 1, 1);
87 static int epic_ifioctl(struct ifnet *, u_long, caddr_t);
88 static void epic_intr(void *);
89 static void epic_tx_underrun(epic_softc_t *);
90 static void epic_ifstart(struct ifnet *);
91 static void epic_ifwatchdog(struct ifnet *);
92 static void epic_stats_update(epic_softc_t *);
93 static void epic_init(void *);
94 static void epic_stop(epic_softc_t *);
95 static void epic_rx_done(epic_softc_t *);
96 static void epic_tx_done(epic_softc_t *);
97 static int epic_init_rings(epic_softc_t *);
98 static void epic_free_rings(epic_softc_t *);
99 static void epic_stop_activity(epic_softc_t *);
100 static int epic_queue_last_packet(epic_softc_t *);
101 static void epic_start_activity(epic_softc_t *);
102 static void epic_set_rx_mode(epic_softc_t *);
103 static void epic_set_tx_mode(epic_softc_t *);
104 static void epic_set_mc_table(epic_softc_t *);
105 static int epic_read_eeprom(epic_softc_t *,u_int16_t);
106 static void epic_output_eepromw(epic_softc_t *, u_int16_t);
107 static u_int16_t epic_input_eepromw(epic_softc_t *);
108 static u_int8_t epic_eeprom_clock(epic_softc_t *,u_int8_t);
109 static void epic_write_eepromreg(epic_softc_t *,u_int8_t);
110 static u_int8_t epic_read_eepromreg(epic_softc_t *);
112 static int epic_read_phy_reg(epic_softc_t *, int, int);
113 static void epic_write_phy_reg(epic_softc_t *, int, int, int);
115 static int epic_miibus_readreg(device_t, int, int);
116 static int epic_miibus_writereg(device_t, int, int, int);
117 static void epic_miibus_statchg(device_t);
118 static void epic_miibus_mediainit(device_t);
120 static int epic_ifmedia_upd(struct ifnet *);
121 static void epic_ifmedia_sts(struct ifnet *, struct ifmediareq *);
123 static int epic_probe(device_t);
124 static int epic_attach(device_t);
125 static void epic_shutdown(device_t);
126 static int epic_detach(device_t);
127 static void epic_release(epic_softc_t *);
128 static struct epic_type *epic_devtype(device_t);
130 static device_method_t epic_methods[] = {
131 /* Device interface */
132 DEVMETHOD(device_probe, epic_probe),
133 DEVMETHOD(device_attach, epic_attach),
134 DEVMETHOD(device_detach, epic_detach),
135 DEVMETHOD(device_shutdown, epic_shutdown),
138 DEVMETHOD(miibus_readreg, epic_miibus_readreg),
139 DEVMETHOD(miibus_writereg, epic_miibus_writereg),
140 DEVMETHOD(miibus_statchg, epic_miibus_statchg),
141 DEVMETHOD(miibus_mediainit, epic_miibus_mediainit),
146 static driver_t epic_driver = {
152 static devclass_t epic_devclass;
154 DRIVER_MODULE(tx, pci, epic_driver, epic_devclass, 0, 0);
155 DRIVER_MODULE(miibus, tx, miibus_driver, miibus_devclass, 0, 0);
157 static struct epic_type epic_devs[] = {
158 { SMC_VENDORID, SMC_DEVICEID_83C170, "SMC EtherPower II 10/100" },
168 t = epic_devtype(dev);
171 device_set_desc(dev, t->name);
178 static struct epic_type *
186 while (t->name != NULL) {
187 if ((pci_get_vendor(dev) == t->ven_id) &&
188 (pci_get_device(dev) == t->dev_id)) {
196 #ifdef EPIC_USEIOSPACE
197 #define EPIC_RES SYS_RES_IOPORT
198 #define EPIC_RID PCIR_BASEIO
200 #define EPIC_RES SYS_RES_MEMORY
201 #define EPIC_RID PCIR_BASEMEM
205 epic_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
212 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
214 *addr = segs->ds_addr;
218 * Attach routine: map registers, allocate softc, rings and descriptors.
219 * Reset to known state.
232 sc = device_get_softc(dev);
233 unit = device_get_unit(dev);
235 /* Preinitialize softc structure. */
239 /* Fill ifnet structure. */
241 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
243 ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST|IFF_NEEDSGIANT;
244 ifp->if_ioctl = epic_ifioctl;
245 ifp->if_start = epic_ifstart;
246 ifp->if_watchdog = epic_ifwatchdog;
247 ifp->if_init = epic_init;
249 ifp->if_baudrate = 10000000;
250 ifp->if_snd.ifq_maxlen = TX_RING_SIZE - 1;
252 /* Enable busmastering. */
253 pci_enable_busmaster(dev);
256 sc->res = bus_alloc_resource_any(dev, EPIC_RES, &rid, RF_ACTIVE);
257 if (sc->res == NULL) {
258 device_printf(dev, "couldn't map ports/memory\n");
263 sc->sc_st = rman_get_bustag(sc->res);
264 sc->sc_sh = rman_get_bushandle(sc->res);
266 /* Allocate interrupt. */
268 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
269 RF_SHAREABLE | RF_ACTIVE);
270 if (sc->irq == NULL) {
271 device_printf(dev, "couldn't map interrupt\n");
276 /* Allocate DMA tags. */
277 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
278 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES * EPIC_MAX_FRAGS,
279 EPIC_MAX_FRAGS, MCLBYTES, 0, busdma_lock_mutex, &Giant, &sc->mtag);
281 device_printf(dev, "couldn't allocate dma tag\n");
285 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
286 BUS_SPACE_MAXADDR, NULL, NULL,
287 sizeof(struct epic_rx_desc) * RX_RING_SIZE,
288 1, sizeof(struct epic_rx_desc) * RX_RING_SIZE, 0, busdma_lock_mutex,
291 device_printf(dev, "couldn't allocate dma tag\n");
295 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
296 BUS_SPACE_MAXADDR, NULL, NULL,
297 sizeof(struct epic_tx_desc) * TX_RING_SIZE,
298 1, sizeof(struct epic_tx_desc) * TX_RING_SIZE, 0,
299 busdma_lock_mutex, &Giant, &sc->ttag);
301 device_printf(dev, "couldn't allocate dma tag\n");
305 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
306 BUS_SPACE_MAXADDR, NULL, NULL,
307 sizeof(struct epic_frag_list) * TX_RING_SIZE,
308 1, sizeof(struct epic_frag_list) * TX_RING_SIZE, 0,
309 busdma_lock_mutex, &Giant, &sc->ftag);
311 device_printf(dev, "couldn't allocate dma tag\n");
315 /* Allocate DMA safe memory and get the DMA addresses. */
316 error = bus_dmamem_alloc(sc->ftag, (void **)&sc->tx_flist,
317 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->fmap);
319 device_printf(dev, "couldn't allocate dma memory\n");
322 error = bus_dmamap_load(sc->ftag, sc->fmap, sc->tx_flist,
323 sizeof(struct epic_frag_list) * TX_RING_SIZE, epic_dma_map_addr,
326 device_printf(dev, "couldn't map dma memory\n");
329 error = bus_dmamem_alloc(sc->ttag, (void **)&sc->tx_desc,
330 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tmap);
332 device_printf(dev, "couldn't allocate dma memory\n");
335 error = bus_dmamap_load(sc->ttag, sc->tmap, sc->tx_desc,
336 sizeof(struct epic_tx_desc) * TX_RING_SIZE, epic_dma_map_addr,
339 device_printf(dev, "couldn't map dma memory\n");
342 error = bus_dmamem_alloc(sc->rtag, (void **)&sc->rx_desc,
343 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rmap);
345 device_printf(dev, "couldn't allocate dma memory\n");
348 error = bus_dmamap_load(sc->rtag, sc->rmap, sc->rx_desc,
349 sizeof(struct epic_rx_desc) * RX_RING_SIZE, epic_dma_map_addr,
352 device_printf(dev, "couldn't map dma memory\n");
356 /* Bring the chip out of low-power mode. */
357 CSR_WRITE_4(sc, GENCTL, GENCTL_SOFT_RESET);
360 /* Workaround for Application Note 7-15. */
361 for (i = 0; i < 16; i++)
362 CSR_WRITE_4(sc, TEST1, TEST1_CLOCK_TEST);
364 /* Read MAC address from EEPROM. */
365 for (i = 0; i < ETHER_ADDR_LEN / sizeof(u_int16_t); i++)
366 ((u_int16_t *)sc->sc_macaddr)[i] = epic_read_eeprom(sc,i);
368 /* Set Non-Volatile Control Register from EEPROM. */
369 CSR_WRITE_4(sc, NVCTL, epic_read_eeprom(sc, EEPROM_NVCTL) & 0x1F);
372 sc->tx_threshold = TRANSMIT_THRESHOLD;
373 sc->txcon = TXCON_DEFAULT;
374 sc->miicfg = MIICFG_SMI_ENABLE;
375 sc->phyid = EPIC_UNKN_PHY;
379 sc->cardvend = pci_read_config(dev, PCIR_SUBVEND_0, 2);
380 sc->cardid = pci_read_config(dev, PCIR_SUBDEV_0, 2);
382 if (sc->cardvend != SMC_VENDORID)
383 device_printf(dev, "unknown card vendor %04xh\n", sc->cardvend);
385 /* Do ifmedia setup. */
386 if (mii_phy_probe(dev, &sc->miibus,
387 epic_ifmedia_upd, epic_ifmedia_sts)) {
388 device_printf(dev, "ERROR! MII without any PHY!?\n");
393 /* board type and ... */
395 for(i = 0x2c; i < 0x32; i++) {
396 tmp = epic_read_eeprom(sc, i);
397 if (' ' == (u_int8_t)tmp)
399 printf("%c", (u_int8_t)tmp);
401 if (' ' == (u_int8_t)tmp)
403 printf("%c", (u_int8_t)tmp);
407 /* Initialize rings. */
408 if (epic_init_rings(sc)) {
409 device_printf(dev, "failed to init rings\n");
414 ifp->if_hdrlen = sizeof(struct ether_vlan_header);
415 ifp->if_capabilities |= IFCAP_VLAN_MTU;
416 ifp->if_capenable |= IFCAP_VLAN_MTU;
417 callout_handle_init(&sc->stat_ch);
419 /* Activate our interrupt handler. */
420 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET,
421 epic_intr, sc, &sc->sc_ih);
423 device_printf(dev, "couldn't set up irq\n");
427 /* Attach to OS's managers. */
428 ether_ifattach(ifp, sc->sc_macaddr);
439 * Free any resources allocated by the driver.
442 epic_release(epic_softc_t *sc)
446 bus_release_resource(sc->dev, SYS_RES_IRQ, 0, sc->irq);
448 bus_release_resource(sc->dev, EPIC_RES, EPIC_RID, sc->res);
451 bus_dmamap_unload(sc->ftag, sc->fmap);
452 bus_dmamem_free(sc->ftag, sc->tx_flist, sc->fmap);
453 bus_dmamap_destroy(sc->ftag, sc->fmap);
456 bus_dmamap_unload(sc->ttag, sc->tmap);
457 bus_dmamem_free(sc->ttag, sc->tx_desc, sc->tmap);
458 bus_dmamap_destroy(sc->ttag, sc->tmap);
461 bus_dmamap_unload(sc->rtag, sc->rmap);
462 bus_dmamem_free(sc->rtag, sc->rx_desc, sc->rmap);
463 bus_dmamap_destroy(sc->rtag, sc->rmap);
466 bus_dma_tag_destroy(sc->mtag);
468 bus_dma_tag_destroy(sc->ftag);
470 bus_dma_tag_destroy(sc->ttag);
472 bus_dma_tag_destroy(sc->rtag);
476 * Detach driver and free resources.
488 sc = device_get_softc(dev);
489 ifp = &sc->arpcom.ac_if;
495 bus_generic_detach(dev);
496 device_delete_child(dev, sc->miibus);
498 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
508 * Stop all chip I/O so that the kernel's probe routines don't
509 * get confused by errant DMAs when rebooting.
517 sc = device_get_softc(dev);
523 * This is if_ioctl handler.
526 epic_ifioctl(ifp, command, data)
531 epic_softc_t *sc = ifp->if_softc;
532 struct mii_data *mii;
533 struct ifreq *ifr = (struct ifreq *) data;
540 if (ifp->if_mtu == ifr->ifr_mtu)
543 /* XXX Though the datasheet doesn't imply any
544 * limitations on RX and TX sizes beside max 64Kb
545 * DMA transfer, seems we can't send more then 1600
546 * data bytes per ethernet packet (transmitter hangs
547 * up if more data is sent).
549 if (ifr->ifr_mtu + ifp->if_hdrlen <= EPIC_MAX_MTU) {
550 ifp->if_mtu = ifr->ifr_mtu;
559 * If the interface is marked up and stopped, then start it.
560 * If it is marked down and running, then stop it.
562 if (ifp->if_flags & IFF_UP) {
563 if ((ifp->if_flags & IFF_RUNNING) == 0) {
568 if (ifp->if_flags & IFF_RUNNING) {
574 /* Handle IFF_PROMISC and IFF_ALLMULTI flags. */
575 epic_stop_activity(sc);
576 epic_set_mc_table(sc);
577 epic_set_rx_mode(sc);
578 epic_start_activity(sc);
583 epic_set_mc_table(sc);
589 mii = device_get_softc(sc->miibus);
590 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
594 error = ether_ioctl(ifp, command, data);
602 epic_dma_map_txbuf(void *arg, bus_dma_segment_t *segs, int nseg,
603 bus_size_t mapsize, int error)
605 struct epic_frag_list *flist;
611 KASSERT(nseg <= EPIC_MAX_FRAGS, ("too many DMA segments"));
613 /* Fill fragments list. */
614 for (i = 0; i < nseg; i++) {
615 KASSERT(segs[i].ds_len <= MCLBYTES, ("segment size too large"));
616 flist->frag[i].fraglen = segs[i].ds_len;
617 flist->frag[i].fragaddr = segs[i].ds_addr;
619 flist->numfrags = nseg;
623 epic_dma_map_rxbuf(void *arg, bus_dma_segment_t *segs, int nseg,
624 bus_size_t mapsize, int error)
626 struct epic_rx_desc *desc;
631 KASSERT(nseg == 1, ("too many DMA segments"));
633 desc->bufaddr = segs->ds_addr;
637 * This is if_start handler. It takes mbufs from if_snd queue
638 * and queue them for transmit, one by one, until TX ring become full
639 * or queue become empty.
645 epic_softc_t *sc = ifp->if_softc;
646 struct epic_tx_buffer *buf;
647 struct epic_tx_desc *desc;
648 struct epic_frag_list *flist;
652 while (sc->pending_txs < TX_RING_SIZE) {
653 buf = sc->tx_buffer + sc->cur_tx;
654 desc = sc->tx_desc + sc->cur_tx;
655 flist = sc->tx_flist + sc->cur_tx;
657 /* Get next packet to send. */
658 IF_DEQUEUE(&ifp->if_snd, m0);
660 /* If nothing to send, return. */
664 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m0,
665 epic_dma_map_txbuf, flist, 0);
667 if (error && error != EFBIG) {
674 * If packet was more than EPIC_MAX_FRAGS parts,
675 * recopy packet to a newly allocated mbuf cluster.
678 m = m_defrag(m0, M_DONTWAIT);
687 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m,
688 epic_dma_map_txbuf, flist, 0);
695 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREWRITE);
699 sc->cur_tx = (sc->cur_tx + 1) & TX_RING_MASK;
700 desc->control = 0x01;
702 max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN);
703 desc->status = 0x8000;
704 bus_dmamap_sync(sc->ttag, sc->tmap,
705 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
706 bus_dmamap_sync(sc->ftag, sc->fmap, BUS_DMASYNC_PREWRITE);
707 CSR_WRITE_4(sc, COMMAND, COMMAND_TXQUEUED);
709 /* Set watchdog timer. */
715 ifp->if_flags |= IFF_OACTIVE;
719 * Synopsis: Finish all received frames.
725 struct ifnet *ifp = &sc->sc_if;
727 struct epic_rx_buffer *buf;
728 struct epic_rx_desc *desc;
733 bus_dmamap_sync(sc->rtag, sc->rmap, BUS_DMASYNC_POSTREAD);
734 while ((sc->rx_desc[sc->cur_rx].status & 0x8000) == 0) {
735 buf = sc->rx_buffer + sc->cur_rx;
736 desc = sc->rx_desc + sc->cur_rx;
738 /* Switch to next descriptor. */
739 sc->cur_rx = (sc->cur_rx + 1) & RX_RING_MASK;
742 * Check for RX errors. This should only happen if
743 * SAVE_ERRORED_PACKETS is set. RX errors generate
744 * RXE interrupt usually.
746 if ((desc->status & 1) == 0) {
748 desc->status = 0x8000;
752 /* Save packet length and mbuf contained packet. */
753 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_POSTREAD);
754 len = desc->rxlength - ETHER_CRC_LEN;
757 /* Try to get an mbuf cluster. */
758 buf->mbuf = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
759 if (buf->mbuf == NULL) {
761 desc->status = 0x8000;
765 buf->mbuf->m_len = buf->mbuf->m_pkthdr.len = MCLBYTES;
766 m_adj(buf->mbuf, ETHER_ALIGN);
768 /* Point to new mbuf, and give descriptor to chip. */
769 error = bus_dmamap_load_mbuf(sc->mtag, sc->sparemap, buf->mbuf,
770 epic_dma_map_rxbuf, desc, 0);
773 desc->status = 0x8000;
778 desc->status = 0x8000;
779 bus_dmamap_unload(sc->mtag, buf->map);
781 buf->map = sc->sparemap;
783 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREREAD);
785 /* First mbuf in packet holds the ethernet and packet headers */
786 m->m_pkthdr.rcvif = ifp;
787 m->m_pkthdr.len = m->m_len = len;
789 /* Give mbuf to OS. */
790 (*ifp->if_input)(ifp, m);
792 /* Successfuly received frame */
795 bus_dmamap_sync(sc->rtag, sc->rmap,
796 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
800 * Synopsis: Do last phase of transmission. I.e. if desc is
801 * transmitted, decrease pending_txs counter, free mbuf contained
802 * packet, switch to next descriptor and repeat until no packets
803 * are pending or descriptor is not transmitted yet.
809 struct epic_tx_buffer *buf;
810 struct epic_tx_desc *desc;
813 bus_dmamap_sync(sc->ttag, sc->tmap, BUS_DMASYNC_POSTREAD);
814 while (sc->pending_txs > 0) {
815 buf = sc->tx_buffer + sc->dirty_tx;
816 desc = sc->tx_desc + sc->dirty_tx;
817 status = desc->status;
820 * If packet is not transmitted, thou followed
821 * packets are not transmitted too.
826 /* Packet is transmitted. Switch to next and free mbuf. */
828 sc->dirty_tx = (sc->dirty_tx + 1) & TX_RING_MASK;
829 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_POSTWRITE);
830 bus_dmamap_unload(sc->mtag, buf->map);
834 /* Check for errors and collisions. */
836 sc->sc_if.if_opackets++;
838 sc->sc_if.if_oerrors++;
839 sc->sc_if.if_collisions += (status >> 8) & 0x1F;
841 if ((status & 0x1001) == 0x1001)
842 device_printf(sc->dev,
843 "Tx ERROR: excessive coll. number\n");
847 if (sc->pending_txs < TX_RING_SIZE)
848 sc->sc_if.if_flags &= ~IFF_OACTIVE;
849 bus_dmamap_sync(sc->ttag, sc->tmap,
850 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
865 while (i-- && ((status = CSR_READ_4(sc, INTSTAT)) & INTSTAT_INT_ACTV)) {
866 CSR_WRITE_4(sc, INTSTAT, status);
868 if (status & (INTSTAT_RQE|INTSTAT_RCC|INTSTAT_OVW)) {
870 if (status & (INTSTAT_RQE|INTSTAT_OVW)) {
872 if (status & INTSTAT_OVW)
873 device_printf(sc->dev, "RX buffer overflow\n");
874 if (status & INTSTAT_RQE)
875 device_printf(sc->dev, "RX FIFO overflow\n");
877 if ((CSR_READ_4(sc, COMMAND) & COMMAND_RXQUEUED) == 0)
878 CSR_WRITE_4(sc, COMMAND, COMMAND_RXQUEUED);
879 sc->sc_if.if_ierrors++;
883 if (status & (INTSTAT_TXC|INTSTAT_TCC|INTSTAT_TQE)) {
885 if (sc->sc_if.if_snd.ifq_head != NULL)
886 epic_ifstart(&sc->sc_if);
889 /* Check for rare errors */
890 if (status & (INTSTAT_FATAL|INTSTAT_PMA|INTSTAT_PTA|
891 INTSTAT_APE|INTSTAT_DPE|INTSTAT_TXU|INTSTAT_RXE)) {
892 if (status & (INTSTAT_FATAL|INTSTAT_PMA|INTSTAT_PTA|
893 INTSTAT_APE|INTSTAT_DPE)) {
894 device_printf(sc->dev, "PCI fatal errors occured: %s%s%s%s\n",
895 (status & INTSTAT_PMA) ? "PMA " : "",
896 (status & INTSTAT_PTA) ? "PTA " : "",
897 (status & INTSTAT_APE) ? "APE " : "",
898 (status & INTSTAT_DPE) ? "DPE" : "");
905 if (status & INTSTAT_RXE) {
907 device_printf(sc->dev, "CRC/Alignment error\n");
909 sc->sc_if.if_ierrors++;
912 if (status & INTSTAT_TXU) {
913 epic_tx_underrun(sc);
914 sc->sc_if.if_oerrors++;
919 /* If no packets are pending, then no timeouts. */
920 if (sc->pending_txs == 0)
921 sc->sc_if.if_timer = 0;
925 * Handle the TX underrun error: increase the TX threshold
926 * and restart the transmitter.
932 if (sc->tx_threshold > TRANSMIT_THRESHOLD_MAX) {
933 sc->txcon &= ~TXCON_EARLY_TRANSMIT_ENABLE;
935 device_printf(sc->dev, "Tx UNDERRUN: early TX disabled\n");
938 sc->tx_threshold += 0x40;
940 device_printf(sc->dev,
941 "Tx UNDERRUN: TX threshold increased to %d\n",
946 /* We must set TXUGO to reset the stuck transmitter. */
947 CSR_WRITE_4(sc, COMMAND, COMMAND_TXUGO);
949 /* Update the TX threshold */
950 epic_stop_activity(sc);
951 epic_set_tx_mode(sc);
952 epic_start_activity(sc);
956 * Synopsis: This one is called if packets wasn't transmitted
957 * during timeout. Try to deallocate transmitted packets, and
958 * if success continue to work.
970 device_printf(sc->dev, "device timeout %d packets\n", sc->pending_txs);
972 /* Try to finish queued packets. */
975 /* If not successful. */
976 if (sc->pending_txs > 0) {
977 ifp->if_oerrors += sc->pending_txs;
979 /* Reinitialize board. */
980 device_printf(sc->dev, "reinitialization\n");
984 device_printf(sc->dev, "seems we can continue normaly\n");
987 if (ifp->if_snd.ifq_head)
994 * Despite the name of this function, it doesn't update statistics, it only
995 * helps in autonegotiation process.
998 epic_stats_update(epic_softc_t * sc)
1000 struct mii_data * mii;
1005 mii = device_get_softc(sc->miibus);
1008 sc->stat_ch = timeout((timeout_t *)epic_stats_update, sc, hz);
1014 * Set media options.
1017 epic_ifmedia_upd(ifp)
1021 struct mii_data *mii;
1022 struct ifmedia *ifm;
1023 struct mii_softc *miisc;
1027 mii = device_get_softc(sc->miibus);
1028 ifm = &mii->mii_media;
1029 media = ifm->ifm_cur->ifm_media;
1031 /* Do not do anything if interface is not up. */
1032 if ((ifp->if_flags & IFF_UP) == 0)
1036 * Lookup current selected PHY.
1038 if (IFM_INST(media) == sc->serinst) {
1039 sc->phyid = EPIC_SERIAL;
1042 /* If we're not selecting serial interface, select MII mode. */
1043 sc->miicfg &= ~MIICFG_SERIAL_ENABLE;
1044 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1046 /* Default to unknown PHY. */
1047 sc->phyid = EPIC_UNKN_PHY;
1049 /* Lookup selected PHY. */
1050 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL;
1051 miisc = LIST_NEXT(miisc, mii_list)) {
1052 if (IFM_INST(media) == miisc->mii_inst) {
1058 /* Identify selected PHY. */
1060 int id1, id2, model, oui;
1062 id1 = PHY_READ(sc->physc, MII_PHYIDR1);
1063 id2 = PHY_READ(sc->physc, MII_PHYIDR2);
1065 oui = MII_OUI(id1, id2);
1066 model = MII_MODEL(id2);
1068 case MII_OUI_QUALSEMI:
1069 if (model == MII_MODEL_QUALSEMI_QS6612)
1070 sc->phyid = EPIC_QS6612_PHY;
1072 case MII_OUI_xxALTIMA:
1073 if (model == MII_MODEL_xxALTIMA_AC101)
1074 sc->phyid = EPIC_AC101_PHY;
1076 case MII_OUI_xxLEVEL1:
1077 if (model == MII_MODEL_xxLEVEL1_LXT970)
1078 sc->phyid = EPIC_LXT970_PHY;
1085 * Do PHY specific card setup.
1089 * Call this, to isolate all not selected PHYs and
1094 /* Do our own setup. */
1095 switch (sc->phyid) {
1096 case EPIC_QS6612_PHY:
1098 case EPIC_AC101_PHY:
1099 /* We have to powerup fiber tranceivers. */
1100 if (IFM_SUBTYPE(media) == IFM_100_FX)
1101 sc->miicfg |= MIICFG_694_ENABLE;
1103 sc->miicfg &= ~MIICFG_694_ENABLE;
1104 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1107 case EPIC_LXT970_PHY:
1108 /* We have to powerup fiber tranceivers. */
1109 cfg = PHY_READ(sc->physc, MII_LXTPHY_CONFIG);
1110 if (IFM_SUBTYPE(media) == IFM_100_FX)
1111 cfg |= CONFIG_LEDC1 | CONFIG_LEDC0;
1113 cfg &= ~(CONFIG_LEDC1 | CONFIG_LEDC0);
1114 PHY_WRITE(sc->physc, MII_LXTPHY_CONFIG, cfg);
1118 /* Select serial PHY (10base2/BNC usually). */
1119 sc->miicfg |= MIICFG_694_ENABLE | MIICFG_SERIAL_ENABLE;
1120 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1122 /* There is no driver to fill this. */
1123 mii->mii_media_active = media;
1124 mii->mii_media_status = 0;
1127 * We need to call this manually as it wasn't called
1128 * in mii_mediachg().
1130 epic_miibus_statchg(sc->dev);
1133 device_printf(sc->dev, "ERROR! Unknown PHY selected\n");
1141 * Report current media status.
1144 epic_ifmedia_sts(ifp, ifmr)
1146 struct ifmediareq *ifmr;
1149 struct mii_data *mii;
1150 struct ifmedia *ifm;
1153 mii = device_get_softc(sc->miibus);
1154 ifm = &mii->mii_media;
1156 /* Nothing should be selected if interface is down. */
1157 if ((ifp->if_flags & IFF_UP) == 0) {
1158 ifmr->ifm_active = IFM_NONE;
1159 ifmr->ifm_status = 0;
1163 /* Call underlying pollstat, if not serial PHY. */
1164 if (sc->phyid != EPIC_SERIAL)
1167 /* Simply copy media info. */
1168 ifmr->ifm_active = mii->mii_media_active;
1169 ifmr->ifm_status = mii->mii_media_status;
1173 * Callback routine, called on media change.
1176 epic_miibus_statchg(dev)
1180 struct mii_data *mii;
1183 sc = device_get_softc(dev);
1184 mii = device_get_softc(sc->miibus);
1185 media = mii->mii_media_active;
1187 sc->txcon &= ~(TXCON_LOOPBACK_MODE | TXCON_FULL_DUPLEX);
1190 * If we are in full-duplex mode or loopback operation,
1191 * we need to decouple receiver and transmitter.
1193 if (IFM_OPTIONS(media) & (IFM_FDX | IFM_LOOP))
1194 sc->txcon |= TXCON_FULL_DUPLEX;
1196 /* On some cards we need manualy set fullduplex led. */
1197 if (sc->cardid == SMC9432FTX ||
1198 sc->cardid == SMC9432FTX_SC) {
1199 if (IFM_OPTIONS(media) & IFM_FDX)
1200 sc->miicfg |= MIICFG_694_ENABLE;
1202 sc->miicfg &= ~MIICFG_694_ENABLE;
1204 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1207 /* Update baudrate. */
1208 if (IFM_SUBTYPE(media) == IFM_100_TX ||
1209 IFM_SUBTYPE(media) == IFM_100_FX)
1210 sc->sc_if.if_baudrate = 100000000;
1212 sc->sc_if.if_baudrate = 10000000;
1214 epic_stop_activity(sc);
1215 epic_set_tx_mode(sc);
1216 epic_start_activity(sc);
1220 epic_miibus_mediainit(dev)
1224 struct mii_data *mii;
1225 struct ifmedia *ifm;
1228 sc = device_get_softc(dev);
1229 mii = device_get_softc(sc->miibus);
1230 ifm = &mii->mii_media;
1233 * Add Serial Media Interface if present, this applies to
1236 if (CSR_READ_4(sc, MIICFG) & MIICFG_PHY_PRESENT) {
1237 /* Store its instance. */
1238 sc->serinst = mii->mii_instance++;
1240 /* Add as 10base2/BNC media. */
1241 media = IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->serinst);
1242 ifmedia_add(ifm, media, 0, NULL);
1244 /* Report to user. */
1245 device_printf(sc->dev, "serial PHY detected (10Base2/BNC)\n");
1250 * Reset chip and update media.
1256 epic_softc_t *sc = xsc;
1257 struct ifnet *ifp = &sc->sc_if;
1262 /* If interface is already running, then we need not do anything. */
1263 if (ifp->if_flags & IFF_RUNNING) {
1268 /* Soft reset the chip (we have to power up card before). */
1269 CSR_WRITE_4(sc, GENCTL, 0);
1270 CSR_WRITE_4(sc, GENCTL, GENCTL_SOFT_RESET);
1273 * Reset takes 15 pci ticks which depends on PCI bus speed.
1274 * Assuming it >= 33000000 hz, we have wait at least 495e-6 sec.
1279 CSR_WRITE_4(sc, GENCTL, 0);
1281 /* Workaround for Application Note 7-15 */
1282 for (i = 0; i < 16; i++)
1283 CSR_WRITE_4(sc, TEST1, TEST1_CLOCK_TEST);
1285 /* Give rings to EPIC */
1286 CSR_WRITE_4(sc, PRCDAR, sc->rx_addr);
1287 CSR_WRITE_4(sc, PTCDAR, sc->tx_addr);
1289 /* Put node address to EPIC. */
1290 CSR_WRITE_4(sc, LAN0, ((u_int16_t *)sc->sc_macaddr)[0]);
1291 CSR_WRITE_4(sc, LAN1, ((u_int16_t *)sc->sc_macaddr)[1]);
1292 CSR_WRITE_4(sc, LAN2, ((u_int16_t *)sc->sc_macaddr)[2]);
1294 /* Set tx mode, includeing transmit threshold. */
1295 epic_set_tx_mode(sc);
1297 /* Compute and set RXCON. */
1298 epic_set_rx_mode(sc);
1300 /* Set multicast table. */
1301 epic_set_mc_table(sc);
1303 /* Enable interrupts by setting the interrupt mask. */
1304 CSR_WRITE_4(sc, INTMASK,
1305 INTSTAT_RCC | /* INTSTAT_RQE | INTSTAT_OVW | INTSTAT_RXE | */
1306 /* INTSTAT_TXC | */ INTSTAT_TCC | INTSTAT_TQE | INTSTAT_TXU |
1309 /* Acknowledge all pending interrupts. */
1310 CSR_WRITE_4(sc, INTSTAT, CSR_READ_4(sc, INTSTAT));
1312 /* Enable interrupts, set for PCI read multiple and etc */
1313 CSR_WRITE_4(sc, GENCTL,
1314 GENCTL_ENABLE_INTERRUPT | GENCTL_MEMORY_READ_MULTIPLE |
1315 GENCTL_ONECOPY | GENCTL_RECEIVE_FIFO_THRESHOLD64);
1317 /* Mark interface running ... */
1318 if (ifp->if_flags & IFF_UP)
1319 ifp->if_flags |= IFF_RUNNING;
1321 ifp->if_flags &= ~IFF_RUNNING;
1324 ifp->if_flags &= ~IFF_OACTIVE;
1326 /* Start Rx process */
1327 epic_start_activity(sc);
1329 /* Set appropriate media */
1330 epic_ifmedia_upd(ifp);
1332 sc->stat_ch = timeout((timeout_t *)epic_stats_update, sc, hz);
1338 * Synopsis: calculate and set Rx mode. Chip must be in idle state to
1342 epic_set_rx_mode(sc)
1348 flags = sc->sc_if.if_flags;
1349 rxcon = RXCON_DEFAULT;
1351 #ifdef EPIC_EARLY_RX
1352 rxcon |= RXCON_EARLY_RX;
1355 rxcon |= (flags & IFF_PROMISC) ? RXCON_PROMISCUOUS_MODE : 0;
1357 CSR_WRITE_4(sc, RXCON, rxcon);
1361 * Synopsis: Set transmit control register. Chip must be in idle state to
1365 epic_set_tx_mode(sc)
1369 if (sc->txcon & TXCON_EARLY_TRANSMIT_ENABLE)
1370 CSR_WRITE_4(sc, ETXTHR, sc->tx_threshold);
1372 CSR_WRITE_4(sc, TXCON, sc->txcon);
1376 * Synopsis: Program multicast filter honoring IFF_ALLMULTI and IFF_PROMISC
1377 * flags (note that setting PROMISC bit in EPIC's RXCON will only touch
1378 * individual frames, multicast filter must be manually programmed).
1380 * Note: EPIC must be in idle state.
1383 epic_set_mc_table(sc)
1387 struct ifmultiaddr *ifma;
1388 u_int16_t filter[4];
1392 if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
1393 CSR_WRITE_4(sc, MC0, 0xFFFF);
1394 CSR_WRITE_4(sc, MC1, 0xFFFF);
1395 CSR_WRITE_4(sc, MC2, 0xFFFF);
1396 CSR_WRITE_4(sc, MC3, 0xFFFF);
1405 #if __FreeBSD_version < 500000
1406 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1408 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1410 if (ifma->ifma_addr->sa_family != AF_LINK)
1412 h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
1413 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
1414 filter[h >> 4] |= 1 << (h & 0xF);
1417 CSR_WRITE_4(sc, MC0, filter[0]);
1418 CSR_WRITE_4(sc, MC1, filter[1]);
1419 CSR_WRITE_4(sc, MC2, filter[2]);
1420 CSR_WRITE_4(sc, MC3, filter[3]);
1425 * Synopsis: Start receive process and transmit one, if they need.
1428 epic_start_activity(sc)
1432 /* Start rx process. */
1433 CSR_WRITE_4(sc, COMMAND, COMMAND_RXQUEUED | COMMAND_START_RX |
1434 (sc->pending_txs ? COMMAND_TXQUEUED : 0));
1438 * Synopsis: Completely stop Rx and Tx processes. If TQE is set additional
1439 * packet needs to be queued to stop Tx DMA.
1442 epic_stop_activity(sc)
1447 /* Stop Tx and Rx DMA. */
1448 CSR_WRITE_4(sc, COMMAND,
1449 COMMAND_STOP_RX | COMMAND_STOP_RDMA | COMMAND_STOP_TDMA);
1451 /* Wait Rx and Tx DMA to stop (why 1 ms ??? XXX). */
1452 for (i = 0; i < 0x1000; i++) {
1453 status = CSR_READ_4(sc, INTSTAT) &
1454 (INTSTAT_TXIDLE | INTSTAT_RXIDLE);
1455 if (status == (INTSTAT_TXIDLE | INTSTAT_RXIDLE))
1460 /* Catch all finished packets. */
1464 status = CSR_READ_4(sc, INTSTAT);
1466 if ((status & INTSTAT_RXIDLE) == 0)
1467 device_printf(sc->dev, "ERROR! Can't stop Rx DMA\n");
1469 if ((status & INTSTAT_TXIDLE) == 0)
1470 device_printf(sc->dev, "ERROR! Can't stop Tx DMA\n");
1473 * May need to queue one more packet if TQE, this is rare
1474 * but existing case.
1476 if ((status & INTSTAT_TQE) && !(status & INTSTAT_TXIDLE))
1477 (void)epic_queue_last_packet(sc);
1481 * The EPIC transmitter may stuck in TQE state. It will not go IDLE until
1482 * a packet from current descriptor will be copied to internal RAM. We
1483 * compose a dummy packet here and queue it for transmission.
1485 * XXX the packet will then be actually sent over network...
1488 epic_queue_last_packet(sc)
1491 struct epic_tx_desc *desc;
1492 struct epic_frag_list *flist;
1493 struct epic_tx_buffer *buf;
1497 device_printf(sc->dev, "queue last packet\n");
1499 desc = sc->tx_desc + sc->cur_tx;
1500 flist = sc->tx_flist + sc->cur_tx;
1501 buf = sc->tx_buffer + sc->cur_tx;
1503 if ((desc->status & 0x8000) || (buf->mbuf != NULL))
1506 MGETHDR(m0, M_DONTWAIT, MT_DATA);
1511 m0->m_len = min(MHLEN, ETHER_MIN_LEN - ETHER_CRC_LEN);
1512 m0->m_pkthdr.len = m0->m_len;
1513 m0->m_pkthdr.rcvif = &sc->sc_if;
1514 bzero(mtod(m0, caddr_t), m0->m_len);
1516 /* Fill fragments list. */
1517 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m0,
1518 epic_dma_map_txbuf, flist, 0);
1523 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREWRITE);
1525 /* Fill in descriptor. */
1528 sc->cur_tx = (sc->cur_tx + 1) & TX_RING_MASK;
1529 desc->control = 0x01;
1530 desc->txlength = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN);
1531 desc->status = 0x8000;
1532 bus_dmamap_sync(sc->ttag, sc->tmap,
1533 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1534 bus_dmamap_sync(sc->ftag, sc->fmap, BUS_DMASYNC_PREWRITE);
1536 /* Launch transmission. */
1537 CSR_WRITE_4(sc, COMMAND, COMMAND_STOP_TDMA | COMMAND_TXQUEUED);
1539 /* Wait Tx DMA to stop (for how long??? XXX) */
1540 for (i = 0; i < 1000; i++) {
1541 if (CSR_READ_4(sc, INTSTAT) & INTSTAT_TXIDLE)
1546 if ((CSR_READ_4(sc, INTSTAT) & INTSTAT_TXIDLE) == 0)
1547 device_printf(sc->dev, "ERROR! can't stop Tx DMA (2)\n");
1555 * Synopsis: Shut down board and deallocates rings.
1565 sc->sc_if.if_timer = 0;
1567 untimeout((timeout_t *)epic_stats_update, sc, sc->stat_ch);
1569 /* Disable interrupts */
1570 CSR_WRITE_4(sc, INTMASK, 0);
1571 CSR_WRITE_4(sc, GENCTL, 0);
1573 /* Try to stop Rx and TX processes */
1574 epic_stop_activity(sc);
1577 CSR_WRITE_4(sc, GENCTL, GENCTL_SOFT_RESET);
1580 /* Make chip go to bed */
1581 CSR_WRITE_4(sc, GENCTL, GENCTL_POWER_DOWN);
1583 /* Mark as stoped */
1584 sc->sc_if.if_flags &= ~IFF_RUNNING;
1590 * Synopsis: This function should free all memory allocated for rings.
1598 for (i = 0; i < RX_RING_SIZE; i++) {
1599 struct epic_rx_buffer *buf = sc->rx_buffer + i;
1600 struct epic_rx_desc *desc = sc->rx_desc + i;
1603 desc->buflength = 0;
1607 bus_dmamap_unload(sc->mtag, buf->map);
1608 bus_dmamap_destroy(sc->mtag, buf->map);
1614 if (sc->sparemap != NULL)
1615 bus_dmamap_destroy(sc->mtag, sc->sparemap);
1617 for (i = 0; i < TX_RING_SIZE; i++) {
1618 struct epic_tx_buffer *buf = sc->tx_buffer + i;
1619 struct epic_tx_desc *desc = sc->tx_desc + i;
1622 desc->buflength = 0;
1626 bus_dmamap_unload(sc->mtag, buf->map);
1627 bus_dmamap_destroy(sc->mtag, buf->map);
1635 * Synopsis: Allocates mbufs for Rx ring and point Rx descs to them.
1636 * Point Tx descs to fragment lists. Check that all descs and fraglists
1637 * are bounded and aligned properly.
1645 sc->cur_rx = sc->cur_tx = sc->dirty_tx = sc->pending_txs = 0;
1647 /* Initialize the RX descriptor ring. */
1648 for (i = 0; i < RX_RING_SIZE; i++) {
1649 struct epic_rx_buffer *buf = sc->rx_buffer + i;
1650 struct epic_rx_desc *desc = sc->rx_desc + i;
1652 desc->status = 0; /* Owned by driver */
1653 desc->next = sc->rx_addr +
1654 ((i + 1) & RX_RING_MASK) * sizeof(struct epic_rx_desc);
1656 if ((desc->next & 3) ||
1657 ((desc->next & PAGE_MASK) + sizeof *desc) > PAGE_SIZE) {
1658 epic_free_rings(sc);
1662 buf->mbuf = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1663 if (buf->mbuf == NULL) {
1664 epic_free_rings(sc);
1667 buf->mbuf->m_len = buf->mbuf->m_pkthdr.len = MCLBYTES;
1668 m_adj(buf->mbuf, ETHER_ALIGN);
1670 error = bus_dmamap_create(sc->mtag, 0, &buf->map);
1672 epic_free_rings(sc);
1675 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, buf->mbuf,
1676 epic_dma_map_rxbuf, desc, 0);
1678 epic_free_rings(sc);
1681 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREREAD);
1683 desc->buflength = buf->mbuf->m_len; /* Max RX buffer length */
1684 desc->status = 0x8000; /* Set owner bit to NIC */
1686 bus_dmamap_sync(sc->rtag, sc->rmap,
1687 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1689 /* Create the spare DMA map. */
1690 error = bus_dmamap_create(sc->mtag, 0, &sc->sparemap);
1692 epic_free_rings(sc);
1696 /* Initialize the TX descriptor ring. */
1697 for (i = 0; i < TX_RING_SIZE; i++) {
1698 struct epic_tx_buffer *buf = sc->tx_buffer + i;
1699 struct epic_tx_desc *desc = sc->tx_desc + i;
1702 desc->next = sc->tx_addr +
1703 ((i + 1) & TX_RING_MASK) * sizeof(struct epic_tx_desc);
1705 if ((desc->next & 3) ||
1706 ((desc->next & PAGE_MASK) + sizeof *desc) > PAGE_SIZE) {
1707 epic_free_rings(sc);
1712 desc->bufaddr = sc->frag_addr +
1713 i * sizeof(struct epic_frag_list);
1715 if ((desc->bufaddr & 3) ||
1716 ((desc->bufaddr & PAGE_MASK) +
1717 sizeof(struct epic_frag_list)) > PAGE_SIZE) {
1718 epic_free_rings(sc);
1722 error = bus_dmamap_create(sc->mtag, 0, &buf->map);
1724 epic_free_rings(sc);
1728 bus_dmamap_sync(sc->ttag, sc->tmap,
1729 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1730 bus_dmamap_sync(sc->ftag, sc->fmap, BUS_DMASYNC_PREWRITE);
1736 * EEPROM operation functions
1739 epic_write_eepromreg(sc, val)
1745 CSR_WRITE_1(sc, EECTL, val);
1747 for (i = 0; i < 0xFF; i++) {
1748 if ((CSR_READ_1(sc, EECTL) & 0x20) == 0)
1754 epic_read_eepromreg(sc)
1758 return (CSR_READ_1(sc, EECTL));
1762 epic_eeprom_clock(sc, val)
1767 epic_write_eepromreg(sc, val);
1768 epic_write_eepromreg(sc, (val | 0x4));
1769 epic_write_eepromreg(sc, val);
1771 return (epic_read_eepromreg(sc));
1775 epic_output_eepromw(sc, val)
1781 for (i = 0xF; i >= 0; i--) {
1783 epic_eeprom_clock(sc, 0x0B);
1785 epic_eeprom_clock(sc, 0x03);
1790 epic_input_eepromw(sc)
1793 u_int16_t retval = 0;
1796 for (i = 0xF; i >= 0; i--) {
1797 if (epic_eeprom_clock(sc, 0x3) & 0x10)
1805 epic_read_eeprom(sc, loc)
1812 epic_write_eepromreg(sc, 3);
1814 if (epic_read_eepromreg(sc) & 0x40)
1815 read_cmd = (loc & 0x3F) | 0x180;
1817 read_cmd = (loc & 0xFF) | 0x600;
1819 epic_output_eepromw(sc, read_cmd);
1821 dataval = epic_input_eepromw(sc);
1823 epic_write_eepromreg(sc, 1);
1829 * Here goes MII read/write routines.
1832 epic_read_phy_reg(sc, phy, reg)
1838 CSR_WRITE_4(sc, MIICTL, ((reg << 4) | (phy << 9) | 0x01));
1840 for (i = 0; i < 0x100; i++) {
1841 if ((CSR_READ_4(sc, MIICTL) & 0x01) == 0)
1846 return (CSR_READ_4(sc, MIIDATA));
1850 epic_write_phy_reg(sc, phy, reg, val)
1856 CSR_WRITE_4(sc, MIIDATA, val);
1857 CSR_WRITE_4(sc, MIICTL, ((reg << 4) | (phy << 9) | 0x02));
1859 for(i = 0; i < 0x100; i++) {
1860 if ((CSR_READ_4(sc, MIICTL) & 0x02) == 0)
1867 epic_miibus_readreg(dev, phy, reg)
1873 sc = device_get_softc(dev);
1875 return (PHY_READ_2(sc, phy, reg));
1879 epic_miibus_writereg(dev, phy, reg, data)
1885 sc = device_get_softc(dev);
1887 PHY_WRITE_2(sc, phy, reg, data);