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>
56 #include <net/if_types.h>
60 #include <net/if_vlan_var.h>
62 #include <machine/bus.h>
63 #include <machine/resource.h>
67 #include <dev/pci/pcireg.h>
68 #include <dev/pci/pcivar.h>
70 #include <dev/mii/mii.h>
71 #include <dev/mii/miivar.h>
74 #include <dev/mii/lxtphyreg.h>
76 #include "miibus_if.h"
78 #include <dev/tx/if_txreg.h>
79 #include <dev/tx/if_txvar.h>
81 MODULE_DEPEND(tx, pci, 1, 1, 1);
82 MODULE_DEPEND(tx, ether, 1, 1, 1);
83 MODULE_DEPEND(tx, miibus, 1, 1, 1);
85 static int epic_ifioctl(struct ifnet *, u_long, caddr_t);
86 static void epic_intr(void *);
87 static void epic_tx_underrun(epic_softc_t *);
88 static void epic_ifstart(struct ifnet *);
89 static void epic_ifwatchdog(struct ifnet *);
90 static void epic_stats_update(epic_softc_t *);
91 static void epic_init(void *);
92 static void epic_stop(epic_softc_t *);
93 static void epic_rx_done(epic_softc_t *);
94 static void epic_tx_done(epic_softc_t *);
95 static int epic_init_rings(epic_softc_t *);
96 static void epic_free_rings(epic_softc_t *);
97 static void epic_stop_activity(epic_softc_t *);
98 static int epic_queue_last_packet(epic_softc_t *);
99 static void epic_start_activity(epic_softc_t *);
100 static void epic_set_rx_mode(epic_softc_t *);
101 static void epic_set_tx_mode(epic_softc_t *);
102 static void epic_set_mc_table(epic_softc_t *);
103 static int epic_read_eeprom(epic_softc_t *,u_int16_t);
104 static void epic_output_eepromw(epic_softc_t *, u_int16_t);
105 static u_int16_t epic_input_eepromw(epic_softc_t *);
106 static u_int8_t epic_eeprom_clock(epic_softc_t *,u_int8_t);
107 static void epic_write_eepromreg(epic_softc_t *,u_int8_t);
108 static u_int8_t epic_read_eepromreg(epic_softc_t *);
110 static int epic_read_phy_reg(epic_softc_t *, int, int);
111 static void epic_write_phy_reg(epic_softc_t *, int, int, int);
113 static int epic_miibus_readreg(device_t, int, int);
114 static int epic_miibus_writereg(device_t, int, int, int);
115 static void epic_miibus_statchg(device_t);
116 static void epic_miibus_mediainit(device_t);
118 static int epic_ifmedia_upd(struct ifnet *);
119 static void epic_ifmedia_sts(struct ifnet *, struct ifmediareq *);
121 static int epic_probe(device_t);
122 static int epic_attach(device_t);
123 static void epic_shutdown(device_t);
124 static int epic_detach(device_t);
125 static void epic_release(epic_softc_t *);
126 static struct epic_type *epic_devtype(device_t);
128 static device_method_t epic_methods[] = {
129 /* Device interface */
130 DEVMETHOD(device_probe, epic_probe),
131 DEVMETHOD(device_attach, epic_attach),
132 DEVMETHOD(device_detach, epic_detach),
133 DEVMETHOD(device_shutdown, epic_shutdown),
136 DEVMETHOD(miibus_readreg, epic_miibus_readreg),
137 DEVMETHOD(miibus_writereg, epic_miibus_writereg),
138 DEVMETHOD(miibus_statchg, epic_miibus_statchg),
139 DEVMETHOD(miibus_mediainit, epic_miibus_mediainit),
144 static driver_t epic_driver = {
150 static devclass_t epic_devclass;
152 DRIVER_MODULE(tx, pci, epic_driver, epic_devclass, 0, 0);
153 DRIVER_MODULE(miibus, tx, miibus_driver, miibus_devclass, 0, 0);
155 static struct epic_type epic_devs[] = {
156 { SMC_VENDORID, SMC_DEVICEID_83C170, "SMC EtherPower II 10/100" },
161 epic_probe(device_t dev)
165 t = epic_devtype(dev);
168 device_set_desc(dev, t->name);
169 return (BUS_PROBE_DEFAULT);
175 static struct epic_type *
176 epic_devtype(device_t dev)
182 while (t->name != NULL) {
183 if ((pci_get_vendor(dev) == t->ven_id) &&
184 (pci_get_device(dev) == t->dev_id)) {
192 #ifdef EPIC_USEIOSPACE
193 #define EPIC_RES SYS_RES_IOPORT
194 #define EPIC_RID PCIR_BASEIO
196 #define EPIC_RES SYS_RES_MEMORY
197 #define EPIC_RID PCIR_BASEMEM
201 epic_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
208 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
210 *addr = segs->ds_addr;
214 * Attach routine: map registers, allocate softc, rings and descriptors.
215 * Reset to known state.
218 epic_attach(device_t dev)
228 sc = device_get_softc(dev);
229 unit = device_get_unit(dev);
231 /* Preinitialize softc structure. */
235 /* Fill ifnet structure. */
236 ifp = sc->ifp = if_alloc(IFT_ETHER);
238 device_printf(dev, "can not if_alloc()\n");
242 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
244 ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST|IFF_NEEDSGIANT;
245 ifp->if_ioctl = epic_ifioctl;
246 ifp->if_start = epic_ifstart;
247 ifp->if_watchdog = epic_ifwatchdog;
248 ifp->if_init = epic_init;
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 *)eaddr)[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 NULL, 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, eaddr);
439 * Free any resources allocated by the driver.
442 epic_release(epic_softc_t *sc)
447 bus_release_resource(sc->dev, SYS_RES_IRQ, 0, sc->irq);
449 bus_release_resource(sc->dev, EPIC_RES, EPIC_RID, sc->res);
452 bus_dmamap_unload(sc->ftag, sc->fmap);
453 bus_dmamem_free(sc->ftag, sc->tx_flist, sc->fmap);
454 bus_dmamap_destroy(sc->ftag, sc->fmap);
457 bus_dmamap_unload(sc->ttag, sc->tmap);
458 bus_dmamem_free(sc->ttag, sc->tx_desc, sc->tmap);
459 bus_dmamap_destroy(sc->ttag, sc->tmap);
462 bus_dmamap_unload(sc->rtag, sc->rmap);
463 bus_dmamem_free(sc->rtag, sc->rx_desc, sc->rmap);
464 bus_dmamap_destroy(sc->rtag, sc->rmap);
467 bus_dma_tag_destroy(sc->mtag);
469 bus_dma_tag_destroy(sc->ftag);
471 bus_dma_tag_destroy(sc->ttag);
473 bus_dma_tag_destroy(sc->rtag);
477 * Detach driver and free resources.
480 epic_detach(device_t dev)
488 sc = device_get_softc(dev);
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.
512 epic_shutdown(device_t dev)
516 sc = device_get_softc(dev);
522 * This is if_ioctl handler.
525 epic_ifioctl(struct ifnet *ifp, u_long command, caddr_t data)
527 epic_softc_t *sc = ifp->if_softc;
528 struct mii_data *mii;
529 struct ifreq *ifr = (struct ifreq *) data;
536 if (ifp->if_mtu == ifr->ifr_mtu)
539 /* XXX Though the datasheet doesn't imply any
540 * limitations on RX and TX sizes beside max 64Kb
541 * DMA transfer, seems we can't send more then 1600
542 * data bytes per ethernet packet (transmitter hangs
543 * up if more data is sent).
545 if (ifr->ifr_mtu + ifp->if_hdrlen <= EPIC_MAX_MTU) {
546 ifp->if_mtu = ifr->ifr_mtu;
555 * If the interface is marked up and stopped, then start it.
556 * If it is marked down and running, then stop it.
558 if (ifp->if_flags & IFF_UP) {
559 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
564 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
570 /* Handle IFF_PROMISC and IFF_ALLMULTI flags. */
571 epic_stop_activity(sc);
572 epic_set_mc_table(sc);
573 epic_set_rx_mode(sc);
574 epic_start_activity(sc);
579 epic_set_mc_table(sc);
585 mii = device_get_softc(sc->miibus);
586 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
590 error = ether_ioctl(ifp, command, data);
598 epic_dma_map_txbuf(void *arg, bus_dma_segment_t *segs, int nseg,
599 bus_size_t mapsize, int error)
601 struct epic_frag_list *flist;
607 KASSERT(nseg <= EPIC_MAX_FRAGS, ("too many DMA segments"));
609 /* Fill fragments list. */
610 for (i = 0; i < nseg; i++) {
611 KASSERT(segs[i].ds_len <= MCLBYTES, ("segment size too large"));
612 flist->frag[i].fraglen = segs[i].ds_len;
613 flist->frag[i].fragaddr = segs[i].ds_addr;
615 flist->numfrags = nseg;
619 epic_dma_map_rxbuf(void *arg, bus_dma_segment_t *segs, int nseg,
620 bus_size_t mapsize, int error)
622 struct epic_rx_desc *desc;
627 KASSERT(nseg == 1, ("too many DMA segments"));
629 desc->bufaddr = segs->ds_addr;
633 * This is if_start handler. It takes mbufs from if_snd queue
634 * and queue them for transmit, one by one, until TX ring become full
635 * or queue become empty.
638 epic_ifstart(struct ifnet * ifp)
640 epic_softc_t *sc = ifp->if_softc;
641 struct epic_tx_buffer *buf;
642 struct epic_tx_desc *desc;
643 struct epic_frag_list *flist;
647 while (sc->pending_txs < TX_RING_SIZE) {
648 buf = sc->tx_buffer + sc->cur_tx;
649 desc = sc->tx_desc + sc->cur_tx;
650 flist = sc->tx_flist + sc->cur_tx;
652 /* Get next packet to send. */
653 IF_DEQUEUE(&ifp->if_snd, m0);
655 /* If nothing to send, return. */
659 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m0,
660 epic_dma_map_txbuf, flist, 0);
662 if (error && error != EFBIG) {
669 * If packet was more than EPIC_MAX_FRAGS parts,
670 * recopy packet to a newly allocated mbuf cluster.
673 m = m_defrag(m0, M_DONTWAIT);
682 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m,
683 epic_dma_map_txbuf, flist, 0);
690 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREWRITE);
694 sc->cur_tx = (sc->cur_tx + 1) & TX_RING_MASK;
695 desc->control = 0x01;
697 max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN);
698 desc->status = 0x8000;
699 bus_dmamap_sync(sc->ttag, sc->tmap,
700 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
701 bus_dmamap_sync(sc->ftag, sc->fmap, BUS_DMASYNC_PREWRITE);
702 CSR_WRITE_4(sc, COMMAND, COMMAND_TXQUEUED);
704 /* Set watchdog timer. */
710 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
714 * Synopsis: Finish all received frames.
717 epic_rx_done(epic_softc_t *sc)
719 struct ifnet *ifp = sc->ifp;
721 struct epic_rx_buffer *buf;
722 struct epic_rx_desc *desc;
727 bus_dmamap_sync(sc->rtag, sc->rmap, BUS_DMASYNC_POSTREAD);
728 while ((sc->rx_desc[sc->cur_rx].status & 0x8000) == 0) {
729 buf = sc->rx_buffer + sc->cur_rx;
730 desc = sc->rx_desc + sc->cur_rx;
732 /* Switch to next descriptor. */
733 sc->cur_rx = (sc->cur_rx + 1) & RX_RING_MASK;
736 * Check for RX errors. This should only happen if
737 * SAVE_ERRORED_PACKETS is set. RX errors generate
738 * RXE interrupt usually.
740 if ((desc->status & 1) == 0) {
742 desc->status = 0x8000;
746 /* Save packet length and mbuf contained packet. */
747 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_POSTREAD);
748 len = desc->rxlength - ETHER_CRC_LEN;
751 /* Try to get an mbuf cluster. */
752 buf->mbuf = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
753 if (buf->mbuf == NULL) {
755 desc->status = 0x8000;
759 buf->mbuf->m_len = buf->mbuf->m_pkthdr.len = MCLBYTES;
760 m_adj(buf->mbuf, ETHER_ALIGN);
762 /* Point to new mbuf, and give descriptor to chip. */
763 error = bus_dmamap_load_mbuf(sc->mtag, sc->sparemap, buf->mbuf,
764 epic_dma_map_rxbuf, desc, 0);
767 desc->status = 0x8000;
772 desc->status = 0x8000;
773 bus_dmamap_unload(sc->mtag, buf->map);
775 buf->map = sc->sparemap;
777 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREREAD);
779 /* First mbuf in packet holds the ethernet and packet headers */
780 m->m_pkthdr.rcvif = ifp;
781 m->m_pkthdr.len = m->m_len = len;
783 /* Give mbuf to OS. */
784 (*ifp->if_input)(ifp, m);
786 /* Successfuly received frame */
789 bus_dmamap_sync(sc->rtag, sc->rmap,
790 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
794 * Synopsis: Do last phase of transmission. I.e. if desc is
795 * transmitted, decrease pending_txs counter, free mbuf contained
796 * packet, switch to next descriptor and repeat until no packets
797 * are pending or descriptor is not transmitted yet.
800 epic_tx_done(epic_softc_t *sc)
802 struct epic_tx_buffer *buf;
803 struct epic_tx_desc *desc;
806 bus_dmamap_sync(sc->ttag, sc->tmap, BUS_DMASYNC_POSTREAD);
807 while (sc->pending_txs > 0) {
808 buf = sc->tx_buffer + sc->dirty_tx;
809 desc = sc->tx_desc + sc->dirty_tx;
810 status = desc->status;
813 * If packet is not transmitted, thou followed
814 * packets are not transmitted too.
819 /* Packet is transmitted. Switch to next and free mbuf. */
821 sc->dirty_tx = (sc->dirty_tx + 1) & TX_RING_MASK;
822 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_POSTWRITE);
823 bus_dmamap_unload(sc->mtag, buf->map);
827 /* Check for errors and collisions. */
829 sc->ifp->if_opackets++;
831 sc->ifp->if_oerrors++;
832 sc->ifp->if_collisions += (status >> 8) & 0x1F;
834 if ((status & 0x1001) == 0x1001)
835 device_printf(sc->dev,
836 "Tx ERROR: excessive coll. number\n");
840 if (sc->pending_txs < TX_RING_SIZE)
841 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
842 bus_dmamap_sync(sc->ttag, sc->tmap,
843 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
857 while (i-- && ((status = CSR_READ_4(sc, INTSTAT)) & INTSTAT_INT_ACTV)) {
858 CSR_WRITE_4(sc, INTSTAT, status);
860 if (status & (INTSTAT_RQE|INTSTAT_RCC|INTSTAT_OVW)) {
862 if (status & (INTSTAT_RQE|INTSTAT_OVW)) {
864 if (status & INTSTAT_OVW)
865 device_printf(sc->dev, "RX buffer overflow\n");
866 if (status & INTSTAT_RQE)
867 device_printf(sc->dev, "RX FIFO overflow\n");
869 if ((CSR_READ_4(sc, COMMAND) & COMMAND_RXQUEUED) == 0)
870 CSR_WRITE_4(sc, COMMAND, COMMAND_RXQUEUED);
871 sc->ifp->if_ierrors++;
875 if (status & (INTSTAT_TXC|INTSTAT_TCC|INTSTAT_TQE)) {
877 if (sc->ifp->if_snd.ifq_head != NULL)
878 epic_ifstart(sc->ifp);
881 /* Check for rare errors */
882 if (status & (INTSTAT_FATAL|INTSTAT_PMA|INTSTAT_PTA|
883 INTSTAT_APE|INTSTAT_DPE|INTSTAT_TXU|INTSTAT_RXE)) {
884 if (status & (INTSTAT_FATAL|INTSTAT_PMA|INTSTAT_PTA|
885 INTSTAT_APE|INTSTAT_DPE)) {
886 device_printf(sc->dev, "PCI fatal errors occured: %s%s%s%s\n",
887 (status & INTSTAT_PMA) ? "PMA " : "",
888 (status & INTSTAT_PTA) ? "PTA " : "",
889 (status & INTSTAT_APE) ? "APE " : "",
890 (status & INTSTAT_DPE) ? "DPE" : "");
897 if (status & INTSTAT_RXE) {
899 device_printf(sc->dev, "CRC/Alignment error\n");
901 sc->ifp->if_ierrors++;
904 if (status & INTSTAT_TXU) {
905 epic_tx_underrun(sc);
906 sc->ifp->if_oerrors++;
911 /* If no packets are pending, then no timeouts. */
912 if (sc->pending_txs == 0)
913 sc->ifp->if_timer = 0;
917 * Handle the TX underrun error: increase the TX threshold
918 * and restart the transmitter.
921 epic_tx_underrun(epic_softc_t *sc)
923 if (sc->tx_threshold > TRANSMIT_THRESHOLD_MAX) {
924 sc->txcon &= ~TXCON_EARLY_TRANSMIT_ENABLE;
926 device_printf(sc->dev, "Tx UNDERRUN: early TX disabled\n");
929 sc->tx_threshold += 0x40;
931 device_printf(sc->dev,
932 "Tx UNDERRUN: TX threshold increased to %d\n",
937 /* We must set TXUGO to reset the stuck transmitter. */
938 CSR_WRITE_4(sc, COMMAND, COMMAND_TXUGO);
940 /* Update the TX threshold */
941 epic_stop_activity(sc);
942 epic_set_tx_mode(sc);
943 epic_start_activity(sc);
947 * Synopsis: This one is called if packets wasn't transmitted
948 * during timeout. Try to deallocate transmitted packets, and
949 * if success continue to work.
952 epic_ifwatchdog(struct ifnet *ifp)
960 device_printf(sc->dev, "device timeout %d packets\n", sc->pending_txs);
962 /* Try to finish queued packets. */
965 /* If not successful. */
966 if (sc->pending_txs > 0) {
967 ifp->if_oerrors += sc->pending_txs;
969 /* Reinitialize board. */
970 device_printf(sc->dev, "reinitialization\n");
974 device_printf(sc->dev, "seems we can continue normaly\n");
977 if (ifp->if_snd.ifq_head)
984 * Despite the name of this function, it doesn't update statistics, it only
985 * helps in autonegotiation process.
988 epic_stats_update(epic_softc_t * sc)
990 struct mii_data * mii;
995 mii = device_get_softc(sc->miibus);
998 sc->stat_ch = timeout((timeout_t *)epic_stats_update, sc, hz);
1004 * Set media options.
1007 epic_ifmedia_upd(struct ifnet *ifp)
1010 struct mii_data *mii;
1011 struct ifmedia *ifm;
1012 struct mii_softc *miisc;
1016 mii = device_get_softc(sc->miibus);
1017 ifm = &mii->mii_media;
1018 media = ifm->ifm_cur->ifm_media;
1020 /* Do not do anything if interface is not up. */
1021 if ((ifp->if_flags & IFF_UP) == 0)
1025 * Lookup current selected PHY.
1027 if (IFM_INST(media) == sc->serinst) {
1028 sc->phyid = EPIC_SERIAL;
1031 /* If we're not selecting serial interface, select MII mode. */
1032 sc->miicfg &= ~MIICFG_SERIAL_ENABLE;
1033 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1035 /* Default to unknown PHY. */
1036 sc->phyid = EPIC_UNKN_PHY;
1038 /* Lookup selected PHY. */
1039 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL;
1040 miisc = LIST_NEXT(miisc, mii_list)) {
1041 if (IFM_INST(media) == miisc->mii_inst) {
1047 /* Identify selected PHY. */
1049 int id1, id2, model, oui;
1051 id1 = PHY_READ(sc->physc, MII_PHYIDR1);
1052 id2 = PHY_READ(sc->physc, MII_PHYIDR2);
1054 oui = MII_OUI(id1, id2);
1055 model = MII_MODEL(id2);
1057 case MII_OUI_QUALSEMI:
1058 if (model == MII_MODEL_QUALSEMI_QS6612)
1059 sc->phyid = EPIC_QS6612_PHY;
1061 case MII_OUI_xxALTIMA:
1062 if (model == MII_MODEL_xxALTIMA_AC101)
1063 sc->phyid = EPIC_AC101_PHY;
1065 case MII_OUI_xxLEVEL1:
1066 if (model == MII_MODEL_xxLEVEL1_LXT970)
1067 sc->phyid = EPIC_LXT970_PHY;
1074 * Do PHY specific card setup.
1078 * Call this, to isolate all not selected PHYs and
1083 /* Do our own setup. */
1084 switch (sc->phyid) {
1085 case EPIC_QS6612_PHY:
1087 case EPIC_AC101_PHY:
1088 /* We have to powerup fiber tranceivers. */
1089 if (IFM_SUBTYPE(media) == IFM_100_FX)
1090 sc->miicfg |= MIICFG_694_ENABLE;
1092 sc->miicfg &= ~MIICFG_694_ENABLE;
1093 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1096 case EPIC_LXT970_PHY:
1097 /* We have to powerup fiber tranceivers. */
1098 cfg = PHY_READ(sc->physc, MII_LXTPHY_CONFIG);
1099 if (IFM_SUBTYPE(media) == IFM_100_FX)
1100 cfg |= CONFIG_LEDC1 | CONFIG_LEDC0;
1102 cfg &= ~(CONFIG_LEDC1 | CONFIG_LEDC0);
1103 PHY_WRITE(sc->physc, MII_LXTPHY_CONFIG, cfg);
1107 /* Select serial PHY (10base2/BNC usually). */
1108 sc->miicfg |= MIICFG_694_ENABLE | MIICFG_SERIAL_ENABLE;
1109 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1111 /* There is no driver to fill this. */
1112 mii->mii_media_active = media;
1113 mii->mii_media_status = 0;
1116 * We need to call this manually as it wasn't called
1117 * in mii_mediachg().
1119 epic_miibus_statchg(sc->dev);
1122 device_printf(sc->dev, "ERROR! Unknown PHY selected\n");
1130 * Report current media status.
1133 epic_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
1136 struct mii_data *mii;
1137 struct ifmedia *ifm;
1140 mii = device_get_softc(sc->miibus);
1141 ifm = &mii->mii_media;
1143 /* Nothing should be selected if interface is down. */
1144 if ((ifp->if_flags & IFF_UP) == 0) {
1145 ifmr->ifm_active = IFM_NONE;
1146 ifmr->ifm_status = 0;
1150 /* Call underlying pollstat, if not serial PHY. */
1151 if (sc->phyid != EPIC_SERIAL)
1154 /* Simply copy media info. */
1155 ifmr->ifm_active = mii->mii_media_active;
1156 ifmr->ifm_status = mii->mii_media_status;
1160 * Callback routine, called on media change.
1163 epic_miibus_statchg(device_t dev)
1166 struct mii_data *mii;
1169 sc = device_get_softc(dev);
1170 mii = device_get_softc(sc->miibus);
1171 media = mii->mii_media_active;
1173 sc->txcon &= ~(TXCON_LOOPBACK_MODE | TXCON_FULL_DUPLEX);
1176 * If we are in full-duplex mode or loopback operation,
1177 * we need to decouple receiver and transmitter.
1179 if (IFM_OPTIONS(media) & (IFM_FDX | IFM_LOOP))
1180 sc->txcon |= TXCON_FULL_DUPLEX;
1182 /* On some cards we need manualy set fullduplex led. */
1183 if (sc->cardid == SMC9432FTX ||
1184 sc->cardid == SMC9432FTX_SC) {
1185 if (IFM_OPTIONS(media) & IFM_FDX)
1186 sc->miicfg |= MIICFG_694_ENABLE;
1188 sc->miicfg &= ~MIICFG_694_ENABLE;
1190 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1193 epic_stop_activity(sc);
1194 epic_set_tx_mode(sc);
1195 epic_start_activity(sc);
1199 epic_miibus_mediainit(device_t dev)
1202 struct mii_data *mii;
1203 struct ifmedia *ifm;
1206 sc = device_get_softc(dev);
1207 mii = device_get_softc(sc->miibus);
1208 ifm = &mii->mii_media;
1211 * Add Serial Media Interface if present, this applies to
1214 if (CSR_READ_4(sc, MIICFG) & MIICFG_PHY_PRESENT) {
1215 /* Store its instance. */
1216 sc->serinst = mii->mii_instance++;
1218 /* Add as 10base2/BNC media. */
1219 media = IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->serinst);
1220 ifmedia_add(ifm, media, 0, NULL);
1222 /* Report to user. */
1223 device_printf(sc->dev, "serial PHY detected (10Base2/BNC)\n");
1228 * Reset chip and update media.
1231 epic_init(void *xsc)
1233 epic_softc_t *sc = xsc;
1234 struct ifnet *ifp = sc->ifp;
1239 /* If interface is already running, then we need not do anything. */
1240 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1245 /* Soft reset the chip (we have to power up card before). */
1246 CSR_WRITE_4(sc, GENCTL, 0);
1247 CSR_WRITE_4(sc, GENCTL, GENCTL_SOFT_RESET);
1250 * Reset takes 15 pci ticks which depends on PCI bus speed.
1251 * Assuming it >= 33000000 hz, we have wait at least 495e-6 sec.
1256 CSR_WRITE_4(sc, GENCTL, 0);
1258 /* Workaround for Application Note 7-15 */
1259 for (i = 0; i < 16; i++)
1260 CSR_WRITE_4(sc, TEST1, TEST1_CLOCK_TEST);
1262 /* Give rings to EPIC */
1263 CSR_WRITE_4(sc, PRCDAR, sc->rx_addr);
1264 CSR_WRITE_4(sc, PTCDAR, sc->tx_addr);
1266 /* Put node address to EPIC. */
1267 CSR_WRITE_4(sc, LAN0, ((u_int16_t *)IF_LLADDR(sc->ifp))[0]);
1268 CSR_WRITE_4(sc, LAN1, ((u_int16_t *)IF_LLADDR(sc->ifp))[1]);
1269 CSR_WRITE_4(sc, LAN2, ((u_int16_t *)IF_LLADDR(sc->ifp))[2]);
1271 /* Set tx mode, includeing transmit threshold. */
1272 epic_set_tx_mode(sc);
1274 /* Compute and set RXCON. */
1275 epic_set_rx_mode(sc);
1277 /* Set multicast table. */
1278 epic_set_mc_table(sc);
1280 /* Enable interrupts by setting the interrupt mask. */
1281 CSR_WRITE_4(sc, INTMASK,
1282 INTSTAT_RCC | /* INTSTAT_RQE | INTSTAT_OVW | INTSTAT_RXE | */
1283 /* INTSTAT_TXC | */ INTSTAT_TCC | INTSTAT_TQE | INTSTAT_TXU |
1286 /* Acknowledge all pending interrupts. */
1287 CSR_WRITE_4(sc, INTSTAT, CSR_READ_4(sc, INTSTAT));
1289 /* Enable interrupts, set for PCI read multiple and etc */
1290 CSR_WRITE_4(sc, GENCTL,
1291 GENCTL_ENABLE_INTERRUPT | GENCTL_MEMORY_READ_MULTIPLE |
1292 GENCTL_ONECOPY | GENCTL_RECEIVE_FIFO_THRESHOLD64);
1294 /* Mark interface running ... */
1295 if (ifp->if_flags & IFF_UP)
1296 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1298 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1301 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1303 /* Start Rx process */
1304 epic_start_activity(sc);
1306 /* Set appropriate media */
1307 epic_ifmedia_upd(ifp);
1309 sc->stat_ch = timeout((timeout_t *)epic_stats_update, sc, hz);
1315 * Synopsis: calculate and set Rx mode. Chip must be in idle state to
1319 epic_set_rx_mode(epic_softc_t *sc)
1324 flags = sc->ifp->if_flags;
1325 rxcon = RXCON_DEFAULT;
1327 #ifdef EPIC_EARLY_RX
1328 rxcon |= RXCON_EARLY_RX;
1331 rxcon |= (flags & IFF_PROMISC) ? RXCON_PROMISCUOUS_MODE : 0;
1333 CSR_WRITE_4(sc, RXCON, rxcon);
1337 * Synopsis: Set transmit control register. Chip must be in idle state to
1341 epic_set_tx_mode(epic_softc_t *sc)
1344 if (sc->txcon & TXCON_EARLY_TRANSMIT_ENABLE)
1345 CSR_WRITE_4(sc, ETXTHR, sc->tx_threshold);
1347 CSR_WRITE_4(sc, TXCON, sc->txcon);
1351 * Synopsis: Program multicast filter honoring IFF_ALLMULTI and IFF_PROMISC
1352 * flags (note that setting PROMISC bit in EPIC's RXCON will only touch
1353 * individual frames, multicast filter must be manually programmed).
1355 * Note: EPIC must be in idle state.
1358 epic_set_mc_table(epic_softc_t *sc)
1361 struct ifmultiaddr *ifma;
1362 u_int16_t filter[4];
1366 if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
1367 CSR_WRITE_4(sc, MC0, 0xFFFF);
1368 CSR_WRITE_4(sc, MC1, 0xFFFF);
1369 CSR_WRITE_4(sc, MC2, 0xFFFF);
1370 CSR_WRITE_4(sc, MC3, 0xFFFF);
1380 #if __FreeBSD_version < 500000
1381 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1383 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1385 if (ifma->ifma_addr->sa_family != AF_LINK)
1387 h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
1388 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
1389 filter[h >> 4] |= 1 << (h & 0xF);
1391 IF_ADDR_UNLOCK(ifp);
1393 CSR_WRITE_4(sc, MC0, filter[0]);
1394 CSR_WRITE_4(sc, MC1, filter[1]);
1395 CSR_WRITE_4(sc, MC2, filter[2]);
1396 CSR_WRITE_4(sc, MC3, filter[3]);
1401 * Synopsis: Start receive process and transmit one, if they need.
1404 epic_start_activity(epic_softc_t *sc)
1407 /* Start rx process. */
1408 CSR_WRITE_4(sc, COMMAND, COMMAND_RXQUEUED | COMMAND_START_RX |
1409 (sc->pending_txs ? COMMAND_TXQUEUED : 0));
1413 * Synopsis: Completely stop Rx and Tx processes. If TQE is set additional
1414 * packet needs to be queued to stop Tx DMA.
1417 epic_stop_activity(epic_softc_t *sc)
1421 /* Stop Tx and Rx DMA. */
1422 CSR_WRITE_4(sc, COMMAND,
1423 COMMAND_STOP_RX | COMMAND_STOP_RDMA | COMMAND_STOP_TDMA);
1425 /* Wait Rx and Tx DMA to stop (why 1 ms ??? XXX). */
1426 for (i = 0; i < 0x1000; i++) {
1427 status = CSR_READ_4(sc, INTSTAT) &
1428 (INTSTAT_TXIDLE | INTSTAT_RXIDLE);
1429 if (status == (INTSTAT_TXIDLE | INTSTAT_RXIDLE))
1434 /* Catch all finished packets. */
1438 status = CSR_READ_4(sc, INTSTAT);
1440 if ((status & INTSTAT_RXIDLE) == 0)
1441 device_printf(sc->dev, "ERROR! Can't stop Rx DMA\n");
1443 if ((status & INTSTAT_TXIDLE) == 0)
1444 device_printf(sc->dev, "ERROR! Can't stop Tx DMA\n");
1447 * May need to queue one more packet if TQE, this is rare
1448 * but existing case.
1450 if ((status & INTSTAT_TQE) && !(status & INTSTAT_TXIDLE))
1451 (void)epic_queue_last_packet(sc);
1455 * The EPIC transmitter may stuck in TQE state. It will not go IDLE until
1456 * a packet from current descriptor will be copied to internal RAM. We
1457 * compose a dummy packet here and queue it for transmission.
1459 * XXX the packet will then be actually sent over network...
1462 epic_queue_last_packet(epic_softc_t *sc)
1464 struct epic_tx_desc *desc;
1465 struct epic_frag_list *flist;
1466 struct epic_tx_buffer *buf;
1470 device_printf(sc->dev, "queue last packet\n");
1472 desc = sc->tx_desc + sc->cur_tx;
1473 flist = sc->tx_flist + sc->cur_tx;
1474 buf = sc->tx_buffer + sc->cur_tx;
1476 if ((desc->status & 0x8000) || (buf->mbuf != NULL))
1479 MGETHDR(m0, M_DONTWAIT, MT_DATA);
1484 m0->m_len = min(MHLEN, ETHER_MIN_LEN - ETHER_CRC_LEN);
1485 m0->m_pkthdr.len = m0->m_len;
1486 m0->m_pkthdr.rcvif = sc->ifp;
1487 bzero(mtod(m0, caddr_t), m0->m_len);
1489 /* Fill fragments list. */
1490 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m0,
1491 epic_dma_map_txbuf, flist, 0);
1496 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREWRITE);
1498 /* Fill in descriptor. */
1501 sc->cur_tx = (sc->cur_tx + 1) & TX_RING_MASK;
1502 desc->control = 0x01;
1503 desc->txlength = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN);
1504 desc->status = 0x8000;
1505 bus_dmamap_sync(sc->ttag, sc->tmap,
1506 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1507 bus_dmamap_sync(sc->ftag, sc->fmap, BUS_DMASYNC_PREWRITE);
1509 /* Launch transmission. */
1510 CSR_WRITE_4(sc, COMMAND, COMMAND_STOP_TDMA | COMMAND_TXQUEUED);
1512 /* Wait Tx DMA to stop (for how long??? XXX) */
1513 for (i = 0; i < 1000; i++) {
1514 if (CSR_READ_4(sc, INTSTAT) & INTSTAT_TXIDLE)
1519 if ((CSR_READ_4(sc, INTSTAT) & INTSTAT_TXIDLE) == 0)
1520 device_printf(sc->dev, "ERROR! can't stop Tx DMA (2)\n");
1528 * Synopsis: Shut down board and deallocates rings.
1531 epic_stop(epic_softc_t *sc)
1537 sc->ifp->if_timer = 0;
1539 untimeout((timeout_t *)epic_stats_update, sc, sc->stat_ch);
1541 /* Disable interrupts */
1542 CSR_WRITE_4(sc, INTMASK, 0);
1543 CSR_WRITE_4(sc, GENCTL, 0);
1545 /* Try to stop Rx and TX processes */
1546 epic_stop_activity(sc);
1549 CSR_WRITE_4(sc, GENCTL, GENCTL_SOFT_RESET);
1552 /* Make chip go to bed */
1553 CSR_WRITE_4(sc, GENCTL, GENCTL_POWER_DOWN);
1555 /* Mark as stoped */
1556 sc->ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1562 * Synopsis: This function should free all memory allocated for rings.
1565 epic_free_rings(epic_softc_t *sc)
1569 for (i = 0; i < RX_RING_SIZE; i++) {
1570 struct epic_rx_buffer *buf = sc->rx_buffer + i;
1571 struct epic_rx_desc *desc = sc->rx_desc + i;
1574 desc->buflength = 0;
1578 bus_dmamap_unload(sc->mtag, buf->map);
1579 bus_dmamap_destroy(sc->mtag, buf->map);
1585 if (sc->sparemap != NULL)
1586 bus_dmamap_destroy(sc->mtag, sc->sparemap);
1588 for (i = 0; i < TX_RING_SIZE; i++) {
1589 struct epic_tx_buffer *buf = sc->tx_buffer + i;
1590 struct epic_tx_desc *desc = sc->tx_desc + i;
1593 desc->buflength = 0;
1597 bus_dmamap_unload(sc->mtag, buf->map);
1598 bus_dmamap_destroy(sc->mtag, buf->map);
1606 * Synopsis: Allocates mbufs for Rx ring and point Rx descs to them.
1607 * Point Tx descs to fragment lists. Check that all descs and fraglists
1608 * are bounded and aligned properly.
1611 epic_init_rings(epic_softc_t *sc)
1615 sc->cur_rx = sc->cur_tx = sc->dirty_tx = sc->pending_txs = 0;
1617 /* Initialize the RX descriptor ring. */
1618 for (i = 0; i < RX_RING_SIZE; i++) {
1619 struct epic_rx_buffer *buf = sc->rx_buffer + i;
1620 struct epic_rx_desc *desc = sc->rx_desc + i;
1622 desc->status = 0; /* Owned by driver */
1623 desc->next = sc->rx_addr +
1624 ((i + 1) & RX_RING_MASK) * sizeof(struct epic_rx_desc);
1626 if ((desc->next & 3) ||
1627 ((desc->next & PAGE_MASK) + sizeof *desc) > PAGE_SIZE) {
1628 epic_free_rings(sc);
1632 buf->mbuf = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1633 if (buf->mbuf == NULL) {
1634 epic_free_rings(sc);
1637 buf->mbuf->m_len = buf->mbuf->m_pkthdr.len = MCLBYTES;
1638 m_adj(buf->mbuf, ETHER_ALIGN);
1640 error = bus_dmamap_create(sc->mtag, 0, &buf->map);
1642 epic_free_rings(sc);
1645 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, buf->mbuf,
1646 epic_dma_map_rxbuf, desc, 0);
1648 epic_free_rings(sc);
1651 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREREAD);
1653 desc->buflength = buf->mbuf->m_len; /* Max RX buffer length */
1654 desc->status = 0x8000; /* Set owner bit to NIC */
1656 bus_dmamap_sync(sc->rtag, sc->rmap,
1657 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1659 /* Create the spare DMA map. */
1660 error = bus_dmamap_create(sc->mtag, 0, &sc->sparemap);
1662 epic_free_rings(sc);
1666 /* Initialize the TX descriptor ring. */
1667 for (i = 0; i < TX_RING_SIZE; i++) {
1668 struct epic_tx_buffer *buf = sc->tx_buffer + i;
1669 struct epic_tx_desc *desc = sc->tx_desc + i;
1672 desc->next = sc->tx_addr +
1673 ((i + 1) & TX_RING_MASK) * sizeof(struct epic_tx_desc);
1675 if ((desc->next & 3) ||
1676 ((desc->next & PAGE_MASK) + sizeof *desc) > PAGE_SIZE) {
1677 epic_free_rings(sc);
1682 desc->bufaddr = sc->frag_addr +
1683 i * sizeof(struct epic_frag_list);
1685 if ((desc->bufaddr & 3) ||
1686 ((desc->bufaddr & PAGE_MASK) +
1687 sizeof(struct epic_frag_list)) > PAGE_SIZE) {
1688 epic_free_rings(sc);
1692 error = bus_dmamap_create(sc->mtag, 0, &buf->map);
1694 epic_free_rings(sc);
1698 bus_dmamap_sync(sc->ttag, sc->tmap,
1699 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1700 bus_dmamap_sync(sc->ftag, sc->fmap, BUS_DMASYNC_PREWRITE);
1706 * EEPROM operation functions
1709 epic_write_eepromreg(epic_softc_t *sc, u_int8_t val)
1713 CSR_WRITE_1(sc, EECTL, val);
1715 for (i = 0; i < 0xFF; i++) {
1716 if ((CSR_READ_1(sc, EECTL) & 0x20) == 0)
1722 epic_read_eepromreg(epic_softc_t *sc)
1725 return (CSR_READ_1(sc, EECTL));
1729 epic_eeprom_clock(epic_softc_t *sc, u_int8_t val)
1732 epic_write_eepromreg(sc, val);
1733 epic_write_eepromreg(sc, (val | 0x4));
1734 epic_write_eepromreg(sc, val);
1736 return (epic_read_eepromreg(sc));
1740 epic_output_eepromw(epic_softc_t *sc, u_int16_t val)
1744 for (i = 0xF; i >= 0; i--) {
1746 epic_eeprom_clock(sc, 0x0B);
1748 epic_eeprom_clock(sc, 0x03);
1753 epic_input_eepromw(epic_softc_t *sc)
1755 u_int16_t retval = 0;
1758 for (i = 0xF; i >= 0; i--) {
1759 if (epic_eeprom_clock(sc, 0x3) & 0x10)
1767 epic_read_eeprom(epic_softc_t *sc, u_int16_t loc)
1772 epic_write_eepromreg(sc, 3);
1774 if (epic_read_eepromreg(sc) & 0x40)
1775 read_cmd = (loc & 0x3F) | 0x180;
1777 read_cmd = (loc & 0xFF) | 0x600;
1779 epic_output_eepromw(sc, read_cmd);
1781 dataval = epic_input_eepromw(sc);
1783 epic_write_eepromreg(sc, 1);
1789 * Here goes MII read/write routines.
1792 epic_read_phy_reg(epic_softc_t *sc, int phy, int reg)
1796 CSR_WRITE_4(sc, MIICTL, ((reg << 4) | (phy << 9) | 0x01));
1798 for (i = 0; i < 0x100; i++) {
1799 if ((CSR_READ_4(sc, MIICTL) & 0x01) == 0)
1804 return (CSR_READ_4(sc, MIIDATA));
1808 epic_write_phy_reg(epic_softc_t *sc, int phy, int reg, int val)
1812 CSR_WRITE_4(sc, MIIDATA, val);
1813 CSR_WRITE_4(sc, MIICTL, ((reg << 4) | (phy << 9) | 0x02));
1815 for(i = 0; i < 0x100; i++) {
1816 if ((CSR_READ_4(sc, MIICTL) & 0x02) == 0)
1823 epic_miibus_readreg(device_t dev, int phy, int reg)
1827 sc = device_get_softc(dev);
1829 return (PHY_READ_2(sc, phy, reg));
1833 epic_miibus_writereg(device_t dev, int phy, int reg, int data)
1837 sc = device_get_softc(dev);
1839 PHY_WRITE_2(sc, phy, reg, data);