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>
64 #include <machine/clock.h> /* for DELAY */
68 #include <dev/pci/pcireg.h>
69 #include <dev/pci/pcivar.h>
71 #include <dev/mii/mii.h>
72 #include <dev/mii/miivar.h>
75 #include <dev/mii/lxtphyreg.h>
77 #include "miibus_if.h"
79 #include <dev/tx/if_txreg.h>
80 #include <dev/tx/if_txvar.h>
82 MODULE_DEPEND(tx, pci, 1, 1, 1);
83 MODULE_DEPEND(tx, ether, 1, 1, 1);
84 MODULE_DEPEND(tx, miibus, 1, 1, 1);
86 static int epic_ifioctl(struct ifnet *, u_long, caddr_t);
87 static void epic_intr(void *);
88 static void epic_tx_underrun(epic_softc_t *);
89 static void epic_ifstart(struct ifnet *);
90 static void epic_ifwatchdog(struct ifnet *);
91 static void epic_stats_update(epic_softc_t *);
92 static void epic_init(void *);
93 static void epic_stop(epic_softc_t *);
94 static void epic_rx_done(epic_softc_t *);
95 static void epic_tx_done(epic_softc_t *);
96 static int epic_init_rings(epic_softc_t *);
97 static void epic_free_rings(epic_softc_t *);
98 static void epic_stop_activity(epic_softc_t *);
99 static int epic_queue_last_packet(epic_softc_t *);
100 static void epic_start_activity(epic_softc_t *);
101 static void epic_set_rx_mode(epic_softc_t *);
102 static void epic_set_tx_mode(epic_softc_t *);
103 static void epic_set_mc_table(epic_softc_t *);
104 static int epic_read_eeprom(epic_softc_t *,u_int16_t);
105 static void epic_output_eepromw(epic_softc_t *, u_int16_t);
106 static u_int16_t epic_input_eepromw(epic_softc_t *);
107 static u_int8_t epic_eeprom_clock(epic_softc_t *,u_int8_t);
108 static void epic_write_eepromreg(epic_softc_t *,u_int8_t);
109 static u_int8_t epic_read_eepromreg(epic_softc_t *);
111 static int epic_read_phy_reg(epic_softc_t *, int, int);
112 static void epic_write_phy_reg(epic_softc_t *, int, int, int);
114 static int epic_miibus_readreg(device_t, int, int);
115 static int epic_miibus_writereg(device_t, int, int, int);
116 static void epic_miibus_statchg(device_t);
117 static void epic_miibus_mediainit(device_t);
119 static int epic_ifmedia_upd(struct ifnet *);
120 static void epic_ifmedia_sts(struct ifnet *, struct ifmediareq *);
122 static int epic_probe(device_t);
123 static int epic_attach(device_t);
124 static void epic_shutdown(device_t);
125 static int epic_detach(device_t);
126 static void epic_release(epic_softc_t *);
127 static struct epic_type *epic_devtype(device_t);
129 static device_method_t epic_methods[] = {
130 /* Device interface */
131 DEVMETHOD(device_probe, epic_probe),
132 DEVMETHOD(device_attach, epic_attach),
133 DEVMETHOD(device_detach, epic_detach),
134 DEVMETHOD(device_shutdown, epic_shutdown),
137 DEVMETHOD(miibus_readreg, epic_miibus_readreg),
138 DEVMETHOD(miibus_writereg, epic_miibus_writereg),
139 DEVMETHOD(miibus_statchg, epic_miibus_statchg),
140 DEVMETHOD(miibus_mediainit, epic_miibus_mediainit),
145 static driver_t epic_driver = {
151 static devclass_t epic_devclass;
153 DRIVER_MODULE(tx, pci, epic_driver, epic_devclass, 0, 0);
154 DRIVER_MODULE(miibus, tx, miibus_driver, miibus_devclass, 0, 0);
156 static struct epic_type epic_devs[] = {
157 { SMC_VENDORID, SMC_DEVICEID_83C170, "SMC EtherPower II 10/100" },
167 t = epic_devtype(dev);
170 device_set_desc(dev, t->name);
171 return (BUS_PROBE_DEFAULT);
177 static struct epic_type *
185 while (t->name != NULL) {
186 if ((pci_get_vendor(dev) == t->ven_id) &&
187 (pci_get_device(dev) == t->dev_id)) {
195 #ifdef EPIC_USEIOSPACE
196 #define EPIC_RES SYS_RES_IOPORT
197 #define EPIC_RID PCIR_BASEIO
199 #define EPIC_RES SYS_RES_MEMORY
200 #define EPIC_RID PCIR_BASEMEM
204 epic_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
211 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
213 *addr = segs->ds_addr;
217 * Attach routine: map registers, allocate softc, rings and descriptors.
218 * Reset to known state.
232 sc = device_get_softc(dev);
233 unit = device_get_unit(dev);
235 /* Preinitialize softc structure. */
239 /* Fill ifnet structure. */
240 ifp = sc->ifp = if_alloc(IFT_ETHER);
242 device_printf(dev, "can not if_alloc()\n");
246 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
248 ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST|IFF_NEEDSGIANT;
249 ifp->if_ioctl = epic_ifioctl;
250 ifp->if_start = epic_ifstart;
251 ifp->if_watchdog = epic_ifwatchdog;
252 ifp->if_init = epic_init;
254 ifp->if_baudrate = 10000000;
255 ifp->if_snd.ifq_maxlen = TX_RING_SIZE - 1;
257 /* Enable busmastering. */
258 pci_enable_busmaster(dev);
261 sc->res = bus_alloc_resource_any(dev, EPIC_RES, &rid, RF_ACTIVE);
262 if (sc->res == NULL) {
263 device_printf(dev, "couldn't map ports/memory\n");
268 sc->sc_st = rman_get_bustag(sc->res);
269 sc->sc_sh = rman_get_bushandle(sc->res);
271 /* Allocate interrupt. */
273 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
274 RF_SHAREABLE | RF_ACTIVE);
275 if (sc->irq == NULL) {
276 device_printf(dev, "couldn't map interrupt\n");
281 /* Allocate DMA tags. */
282 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
283 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES * EPIC_MAX_FRAGS,
284 EPIC_MAX_FRAGS, MCLBYTES, 0, busdma_lock_mutex, &Giant, &sc->mtag);
286 device_printf(dev, "couldn't allocate dma tag\n");
290 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
291 BUS_SPACE_MAXADDR, NULL, NULL,
292 sizeof(struct epic_rx_desc) * RX_RING_SIZE,
293 1, sizeof(struct epic_rx_desc) * RX_RING_SIZE, 0, busdma_lock_mutex,
296 device_printf(dev, "couldn't allocate dma tag\n");
300 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
301 BUS_SPACE_MAXADDR, NULL, NULL,
302 sizeof(struct epic_tx_desc) * TX_RING_SIZE,
303 1, sizeof(struct epic_tx_desc) * TX_RING_SIZE, 0,
304 busdma_lock_mutex, &Giant, &sc->ttag);
306 device_printf(dev, "couldn't allocate dma tag\n");
310 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
311 BUS_SPACE_MAXADDR, NULL, NULL,
312 sizeof(struct epic_frag_list) * TX_RING_SIZE,
313 1, sizeof(struct epic_frag_list) * TX_RING_SIZE, 0,
314 busdma_lock_mutex, &Giant, &sc->ftag);
316 device_printf(dev, "couldn't allocate dma tag\n");
320 /* Allocate DMA safe memory and get the DMA addresses. */
321 error = bus_dmamem_alloc(sc->ftag, (void **)&sc->tx_flist,
322 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->fmap);
324 device_printf(dev, "couldn't allocate dma memory\n");
327 error = bus_dmamap_load(sc->ftag, sc->fmap, sc->tx_flist,
328 sizeof(struct epic_frag_list) * TX_RING_SIZE, epic_dma_map_addr,
331 device_printf(dev, "couldn't map dma memory\n");
334 error = bus_dmamem_alloc(sc->ttag, (void **)&sc->tx_desc,
335 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tmap);
337 device_printf(dev, "couldn't allocate dma memory\n");
340 error = bus_dmamap_load(sc->ttag, sc->tmap, sc->tx_desc,
341 sizeof(struct epic_tx_desc) * TX_RING_SIZE, epic_dma_map_addr,
344 device_printf(dev, "couldn't map dma memory\n");
347 error = bus_dmamem_alloc(sc->rtag, (void **)&sc->rx_desc,
348 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rmap);
350 device_printf(dev, "couldn't allocate dma memory\n");
353 error = bus_dmamap_load(sc->rtag, sc->rmap, sc->rx_desc,
354 sizeof(struct epic_rx_desc) * RX_RING_SIZE, epic_dma_map_addr,
357 device_printf(dev, "couldn't map dma memory\n");
361 /* Bring the chip out of low-power mode. */
362 CSR_WRITE_4(sc, GENCTL, GENCTL_SOFT_RESET);
365 /* Workaround for Application Note 7-15. */
366 for (i = 0; i < 16; i++)
367 CSR_WRITE_4(sc, TEST1, TEST1_CLOCK_TEST);
369 /* Read MAC address from EEPROM. */
370 for (i = 0; i < ETHER_ADDR_LEN / sizeof(u_int16_t); i++)
371 ((u_int16_t *)eaddr)[i] = epic_read_eeprom(sc,i);
373 /* Set Non-Volatile Control Register from EEPROM. */
374 CSR_WRITE_4(sc, NVCTL, epic_read_eeprom(sc, EEPROM_NVCTL) & 0x1F);
377 sc->tx_threshold = TRANSMIT_THRESHOLD;
378 sc->txcon = TXCON_DEFAULT;
379 sc->miicfg = MIICFG_SMI_ENABLE;
380 sc->phyid = EPIC_UNKN_PHY;
384 sc->cardvend = pci_read_config(dev, PCIR_SUBVEND_0, 2);
385 sc->cardid = pci_read_config(dev, PCIR_SUBDEV_0, 2);
387 if (sc->cardvend != SMC_VENDORID)
388 device_printf(dev, "unknown card vendor %04xh\n", sc->cardvend);
390 /* Do ifmedia setup. */
391 if (mii_phy_probe(dev, &sc->miibus,
392 epic_ifmedia_upd, epic_ifmedia_sts)) {
393 device_printf(dev, "ERROR! MII without any PHY!?\n");
398 /* board type and ... */
400 for(i = 0x2c; i < 0x32; i++) {
401 tmp = epic_read_eeprom(sc, i);
402 if (' ' == (u_int8_t)tmp)
404 printf("%c", (u_int8_t)tmp);
406 if (' ' == (u_int8_t)tmp)
408 printf("%c", (u_int8_t)tmp);
412 /* Initialize rings. */
413 if (epic_init_rings(sc)) {
414 device_printf(dev, "failed to init rings\n");
419 ifp->if_hdrlen = sizeof(struct ether_vlan_header);
420 ifp->if_capabilities |= IFCAP_VLAN_MTU;
421 ifp->if_capenable |= IFCAP_VLAN_MTU;
422 callout_handle_init(&sc->stat_ch);
424 /* Activate our interrupt handler. */
425 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET,
426 epic_intr, sc, &sc->sc_ih);
428 device_printf(dev, "couldn't set up irq\n");
432 /* Attach to OS's managers. */
433 ether_ifattach(ifp, eaddr);
444 * Free any resources allocated by the driver.
447 epic_release(epic_softc_t *sc)
452 bus_release_resource(sc->dev, SYS_RES_IRQ, 0, sc->irq);
454 bus_release_resource(sc->dev, EPIC_RES, EPIC_RID, sc->res);
457 bus_dmamap_unload(sc->ftag, sc->fmap);
458 bus_dmamem_free(sc->ftag, sc->tx_flist, sc->fmap);
459 bus_dmamap_destroy(sc->ftag, sc->fmap);
462 bus_dmamap_unload(sc->ttag, sc->tmap);
463 bus_dmamem_free(sc->ttag, sc->tx_desc, sc->tmap);
464 bus_dmamap_destroy(sc->ttag, sc->tmap);
467 bus_dmamap_unload(sc->rtag, sc->rmap);
468 bus_dmamem_free(sc->rtag, sc->rx_desc, sc->rmap);
469 bus_dmamap_destroy(sc->rtag, sc->rmap);
472 bus_dma_tag_destroy(sc->mtag);
474 bus_dma_tag_destroy(sc->ftag);
476 bus_dma_tag_destroy(sc->ttag);
478 bus_dma_tag_destroy(sc->rtag);
482 * Detach driver and free resources.
494 sc = device_get_softc(dev);
501 bus_generic_detach(dev);
502 device_delete_child(dev, sc->miibus);
504 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
514 * Stop all chip I/O so that the kernel's probe routines don't
515 * get confused by errant DMAs when rebooting.
523 sc = device_get_softc(dev);
529 * This is if_ioctl handler.
532 epic_ifioctl(ifp, command, data)
537 epic_softc_t *sc = ifp->if_softc;
538 struct mii_data *mii;
539 struct ifreq *ifr = (struct ifreq *) data;
546 if (ifp->if_mtu == ifr->ifr_mtu)
549 /* XXX Though the datasheet doesn't imply any
550 * limitations on RX and TX sizes beside max 64Kb
551 * DMA transfer, seems we can't send more then 1600
552 * data bytes per ethernet packet (transmitter hangs
553 * up if more data is sent).
555 if (ifr->ifr_mtu + ifp->if_hdrlen <= EPIC_MAX_MTU) {
556 ifp->if_mtu = ifr->ifr_mtu;
565 * If the interface is marked up and stopped, then start it.
566 * If it is marked down and running, then stop it.
568 if (ifp->if_flags & IFF_UP) {
569 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
574 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
580 /* Handle IFF_PROMISC and IFF_ALLMULTI flags. */
581 epic_stop_activity(sc);
582 epic_set_mc_table(sc);
583 epic_set_rx_mode(sc);
584 epic_start_activity(sc);
589 epic_set_mc_table(sc);
595 mii = device_get_softc(sc->miibus);
596 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
600 error = ether_ioctl(ifp, command, data);
608 epic_dma_map_txbuf(void *arg, bus_dma_segment_t *segs, int nseg,
609 bus_size_t mapsize, int error)
611 struct epic_frag_list *flist;
617 KASSERT(nseg <= EPIC_MAX_FRAGS, ("too many DMA segments"));
619 /* Fill fragments list. */
620 for (i = 0; i < nseg; i++) {
621 KASSERT(segs[i].ds_len <= MCLBYTES, ("segment size too large"));
622 flist->frag[i].fraglen = segs[i].ds_len;
623 flist->frag[i].fragaddr = segs[i].ds_addr;
625 flist->numfrags = nseg;
629 epic_dma_map_rxbuf(void *arg, bus_dma_segment_t *segs, int nseg,
630 bus_size_t mapsize, int error)
632 struct epic_rx_desc *desc;
637 KASSERT(nseg == 1, ("too many DMA segments"));
639 desc->bufaddr = segs->ds_addr;
643 * This is if_start handler. It takes mbufs from if_snd queue
644 * and queue them for transmit, one by one, until TX ring become full
645 * or queue become empty.
651 epic_softc_t *sc = ifp->if_softc;
652 struct epic_tx_buffer *buf;
653 struct epic_tx_desc *desc;
654 struct epic_frag_list *flist;
658 while (sc->pending_txs < TX_RING_SIZE) {
659 buf = sc->tx_buffer + sc->cur_tx;
660 desc = sc->tx_desc + sc->cur_tx;
661 flist = sc->tx_flist + sc->cur_tx;
663 /* Get next packet to send. */
664 IF_DEQUEUE(&ifp->if_snd, m0);
666 /* If nothing to send, return. */
670 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m0,
671 epic_dma_map_txbuf, flist, 0);
673 if (error && error != EFBIG) {
680 * If packet was more than EPIC_MAX_FRAGS parts,
681 * recopy packet to a newly allocated mbuf cluster.
684 m = m_defrag(m0, M_DONTWAIT);
693 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m,
694 epic_dma_map_txbuf, flist, 0);
701 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREWRITE);
705 sc->cur_tx = (sc->cur_tx + 1) & TX_RING_MASK;
706 desc->control = 0x01;
708 max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN);
709 desc->status = 0x8000;
710 bus_dmamap_sync(sc->ttag, sc->tmap,
711 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
712 bus_dmamap_sync(sc->ftag, sc->fmap, BUS_DMASYNC_PREWRITE);
713 CSR_WRITE_4(sc, COMMAND, COMMAND_TXQUEUED);
715 /* Set watchdog timer. */
721 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
725 * Synopsis: Finish all received frames.
731 struct ifnet *ifp = sc->ifp;
733 struct epic_rx_buffer *buf;
734 struct epic_rx_desc *desc;
739 bus_dmamap_sync(sc->rtag, sc->rmap, BUS_DMASYNC_POSTREAD);
740 while ((sc->rx_desc[sc->cur_rx].status & 0x8000) == 0) {
741 buf = sc->rx_buffer + sc->cur_rx;
742 desc = sc->rx_desc + sc->cur_rx;
744 /* Switch to next descriptor. */
745 sc->cur_rx = (sc->cur_rx + 1) & RX_RING_MASK;
748 * Check for RX errors. This should only happen if
749 * SAVE_ERRORED_PACKETS is set. RX errors generate
750 * RXE interrupt usually.
752 if ((desc->status & 1) == 0) {
754 desc->status = 0x8000;
758 /* Save packet length and mbuf contained packet. */
759 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_POSTREAD);
760 len = desc->rxlength - ETHER_CRC_LEN;
763 /* Try to get an mbuf cluster. */
764 buf->mbuf = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
765 if (buf->mbuf == NULL) {
767 desc->status = 0x8000;
771 buf->mbuf->m_len = buf->mbuf->m_pkthdr.len = MCLBYTES;
772 m_adj(buf->mbuf, ETHER_ALIGN);
774 /* Point to new mbuf, and give descriptor to chip. */
775 error = bus_dmamap_load_mbuf(sc->mtag, sc->sparemap, buf->mbuf,
776 epic_dma_map_rxbuf, desc, 0);
779 desc->status = 0x8000;
784 desc->status = 0x8000;
785 bus_dmamap_unload(sc->mtag, buf->map);
787 buf->map = sc->sparemap;
789 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREREAD);
791 /* First mbuf in packet holds the ethernet and packet headers */
792 m->m_pkthdr.rcvif = ifp;
793 m->m_pkthdr.len = m->m_len = len;
795 /* Give mbuf to OS. */
796 (*ifp->if_input)(ifp, m);
798 /* Successfuly received frame */
801 bus_dmamap_sync(sc->rtag, sc->rmap,
802 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
806 * Synopsis: Do last phase of transmission. I.e. if desc is
807 * transmitted, decrease pending_txs counter, free mbuf contained
808 * packet, switch to next descriptor and repeat until no packets
809 * are pending or descriptor is not transmitted yet.
815 struct epic_tx_buffer *buf;
816 struct epic_tx_desc *desc;
819 bus_dmamap_sync(sc->ttag, sc->tmap, BUS_DMASYNC_POSTREAD);
820 while (sc->pending_txs > 0) {
821 buf = sc->tx_buffer + sc->dirty_tx;
822 desc = sc->tx_desc + sc->dirty_tx;
823 status = desc->status;
826 * If packet is not transmitted, thou followed
827 * packets are not transmitted too.
832 /* Packet is transmitted. Switch to next and free mbuf. */
834 sc->dirty_tx = (sc->dirty_tx + 1) & TX_RING_MASK;
835 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_POSTWRITE);
836 bus_dmamap_unload(sc->mtag, buf->map);
840 /* Check for errors and collisions. */
842 sc->ifp->if_opackets++;
844 sc->ifp->if_oerrors++;
845 sc->ifp->if_collisions += (status >> 8) & 0x1F;
847 if ((status & 0x1001) == 0x1001)
848 device_printf(sc->dev,
849 "Tx ERROR: excessive coll. number\n");
853 if (sc->pending_txs < TX_RING_SIZE)
854 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
855 bus_dmamap_sync(sc->ttag, sc->tmap,
856 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
871 while (i-- && ((status = CSR_READ_4(sc, INTSTAT)) & INTSTAT_INT_ACTV)) {
872 CSR_WRITE_4(sc, INTSTAT, status);
874 if (status & (INTSTAT_RQE|INTSTAT_RCC|INTSTAT_OVW)) {
876 if (status & (INTSTAT_RQE|INTSTAT_OVW)) {
878 if (status & INTSTAT_OVW)
879 device_printf(sc->dev, "RX buffer overflow\n");
880 if (status & INTSTAT_RQE)
881 device_printf(sc->dev, "RX FIFO overflow\n");
883 if ((CSR_READ_4(sc, COMMAND) & COMMAND_RXQUEUED) == 0)
884 CSR_WRITE_4(sc, COMMAND, COMMAND_RXQUEUED);
885 sc->ifp->if_ierrors++;
889 if (status & (INTSTAT_TXC|INTSTAT_TCC|INTSTAT_TQE)) {
891 if (sc->ifp->if_snd.ifq_head != NULL)
892 epic_ifstart(sc->ifp);
895 /* Check for rare errors */
896 if (status & (INTSTAT_FATAL|INTSTAT_PMA|INTSTAT_PTA|
897 INTSTAT_APE|INTSTAT_DPE|INTSTAT_TXU|INTSTAT_RXE)) {
898 if (status & (INTSTAT_FATAL|INTSTAT_PMA|INTSTAT_PTA|
899 INTSTAT_APE|INTSTAT_DPE)) {
900 device_printf(sc->dev, "PCI fatal errors occured: %s%s%s%s\n",
901 (status & INTSTAT_PMA) ? "PMA " : "",
902 (status & INTSTAT_PTA) ? "PTA " : "",
903 (status & INTSTAT_APE) ? "APE " : "",
904 (status & INTSTAT_DPE) ? "DPE" : "");
911 if (status & INTSTAT_RXE) {
913 device_printf(sc->dev, "CRC/Alignment error\n");
915 sc->ifp->if_ierrors++;
918 if (status & INTSTAT_TXU) {
919 epic_tx_underrun(sc);
920 sc->ifp->if_oerrors++;
925 /* If no packets are pending, then no timeouts. */
926 if (sc->pending_txs == 0)
927 sc->ifp->if_timer = 0;
931 * Handle the TX underrun error: increase the TX threshold
932 * and restart the transmitter.
938 if (sc->tx_threshold > TRANSMIT_THRESHOLD_MAX) {
939 sc->txcon &= ~TXCON_EARLY_TRANSMIT_ENABLE;
941 device_printf(sc->dev, "Tx UNDERRUN: early TX disabled\n");
944 sc->tx_threshold += 0x40;
946 device_printf(sc->dev,
947 "Tx UNDERRUN: TX threshold increased to %d\n",
952 /* We must set TXUGO to reset the stuck transmitter. */
953 CSR_WRITE_4(sc, COMMAND, COMMAND_TXUGO);
955 /* Update the TX threshold */
956 epic_stop_activity(sc);
957 epic_set_tx_mode(sc);
958 epic_start_activity(sc);
962 * Synopsis: This one is called if packets wasn't transmitted
963 * during timeout. Try to deallocate transmitted packets, and
964 * if success continue to work.
976 device_printf(sc->dev, "device timeout %d packets\n", sc->pending_txs);
978 /* Try to finish queued packets. */
981 /* If not successful. */
982 if (sc->pending_txs > 0) {
983 ifp->if_oerrors += sc->pending_txs;
985 /* Reinitialize board. */
986 device_printf(sc->dev, "reinitialization\n");
990 device_printf(sc->dev, "seems we can continue normaly\n");
993 if (ifp->if_snd.ifq_head)
1000 * Despite the name of this function, it doesn't update statistics, it only
1001 * helps in autonegotiation process.
1004 epic_stats_update(epic_softc_t * sc)
1006 struct mii_data * mii;
1011 mii = device_get_softc(sc->miibus);
1014 sc->stat_ch = timeout((timeout_t *)epic_stats_update, sc, hz);
1020 * Set media options.
1023 epic_ifmedia_upd(ifp)
1027 struct mii_data *mii;
1028 struct ifmedia *ifm;
1029 struct mii_softc *miisc;
1033 mii = device_get_softc(sc->miibus);
1034 ifm = &mii->mii_media;
1035 media = ifm->ifm_cur->ifm_media;
1037 /* Do not do anything if interface is not up. */
1038 if ((ifp->if_flags & IFF_UP) == 0)
1042 * Lookup current selected PHY.
1044 if (IFM_INST(media) == sc->serinst) {
1045 sc->phyid = EPIC_SERIAL;
1048 /* If we're not selecting serial interface, select MII mode. */
1049 sc->miicfg &= ~MIICFG_SERIAL_ENABLE;
1050 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1052 /* Default to unknown PHY. */
1053 sc->phyid = EPIC_UNKN_PHY;
1055 /* Lookup selected PHY. */
1056 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL;
1057 miisc = LIST_NEXT(miisc, mii_list)) {
1058 if (IFM_INST(media) == miisc->mii_inst) {
1064 /* Identify selected PHY. */
1066 int id1, id2, model, oui;
1068 id1 = PHY_READ(sc->physc, MII_PHYIDR1);
1069 id2 = PHY_READ(sc->physc, MII_PHYIDR2);
1071 oui = MII_OUI(id1, id2);
1072 model = MII_MODEL(id2);
1074 case MII_OUI_QUALSEMI:
1075 if (model == MII_MODEL_QUALSEMI_QS6612)
1076 sc->phyid = EPIC_QS6612_PHY;
1078 case MII_OUI_xxALTIMA:
1079 if (model == MII_MODEL_xxALTIMA_AC101)
1080 sc->phyid = EPIC_AC101_PHY;
1082 case MII_OUI_xxLEVEL1:
1083 if (model == MII_MODEL_xxLEVEL1_LXT970)
1084 sc->phyid = EPIC_LXT970_PHY;
1091 * Do PHY specific card setup.
1095 * Call this, to isolate all not selected PHYs and
1100 /* Do our own setup. */
1101 switch (sc->phyid) {
1102 case EPIC_QS6612_PHY:
1104 case EPIC_AC101_PHY:
1105 /* We have to powerup fiber tranceivers. */
1106 if (IFM_SUBTYPE(media) == IFM_100_FX)
1107 sc->miicfg |= MIICFG_694_ENABLE;
1109 sc->miicfg &= ~MIICFG_694_ENABLE;
1110 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1113 case EPIC_LXT970_PHY:
1114 /* We have to powerup fiber tranceivers. */
1115 cfg = PHY_READ(sc->physc, MII_LXTPHY_CONFIG);
1116 if (IFM_SUBTYPE(media) == IFM_100_FX)
1117 cfg |= CONFIG_LEDC1 | CONFIG_LEDC0;
1119 cfg &= ~(CONFIG_LEDC1 | CONFIG_LEDC0);
1120 PHY_WRITE(sc->physc, MII_LXTPHY_CONFIG, cfg);
1124 /* Select serial PHY (10base2/BNC usually). */
1125 sc->miicfg |= MIICFG_694_ENABLE | MIICFG_SERIAL_ENABLE;
1126 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1128 /* There is no driver to fill this. */
1129 mii->mii_media_active = media;
1130 mii->mii_media_status = 0;
1133 * We need to call this manually as it wasn't called
1134 * in mii_mediachg().
1136 epic_miibus_statchg(sc->dev);
1139 device_printf(sc->dev, "ERROR! Unknown PHY selected\n");
1147 * Report current media status.
1150 epic_ifmedia_sts(ifp, ifmr)
1152 struct ifmediareq *ifmr;
1155 struct mii_data *mii;
1156 struct ifmedia *ifm;
1159 mii = device_get_softc(sc->miibus);
1160 ifm = &mii->mii_media;
1162 /* Nothing should be selected if interface is down. */
1163 if ((ifp->if_flags & IFF_UP) == 0) {
1164 ifmr->ifm_active = IFM_NONE;
1165 ifmr->ifm_status = 0;
1169 /* Call underlying pollstat, if not serial PHY. */
1170 if (sc->phyid != EPIC_SERIAL)
1173 /* Simply copy media info. */
1174 ifmr->ifm_active = mii->mii_media_active;
1175 ifmr->ifm_status = mii->mii_media_status;
1179 * Callback routine, called on media change.
1182 epic_miibus_statchg(dev)
1186 struct mii_data *mii;
1189 sc = device_get_softc(dev);
1190 mii = device_get_softc(sc->miibus);
1191 media = mii->mii_media_active;
1193 sc->txcon &= ~(TXCON_LOOPBACK_MODE | TXCON_FULL_DUPLEX);
1196 * If we are in full-duplex mode or loopback operation,
1197 * we need to decouple receiver and transmitter.
1199 if (IFM_OPTIONS(media) & (IFM_FDX | IFM_LOOP))
1200 sc->txcon |= TXCON_FULL_DUPLEX;
1202 /* On some cards we need manualy set fullduplex led. */
1203 if (sc->cardid == SMC9432FTX ||
1204 sc->cardid == SMC9432FTX_SC) {
1205 if (IFM_OPTIONS(media) & IFM_FDX)
1206 sc->miicfg |= MIICFG_694_ENABLE;
1208 sc->miicfg &= ~MIICFG_694_ENABLE;
1210 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1213 /* Update baudrate. */
1214 if (IFM_SUBTYPE(media) == IFM_100_TX ||
1215 IFM_SUBTYPE(media) == IFM_100_FX)
1216 sc->ifp->if_baudrate = 100000000;
1218 sc->ifp->if_baudrate = 10000000;
1220 epic_stop_activity(sc);
1221 epic_set_tx_mode(sc);
1222 epic_start_activity(sc);
1226 epic_miibus_mediainit(dev)
1230 struct mii_data *mii;
1231 struct ifmedia *ifm;
1234 sc = device_get_softc(dev);
1235 mii = device_get_softc(sc->miibus);
1236 ifm = &mii->mii_media;
1239 * Add Serial Media Interface if present, this applies to
1242 if (CSR_READ_4(sc, MIICFG) & MIICFG_PHY_PRESENT) {
1243 /* Store its instance. */
1244 sc->serinst = mii->mii_instance++;
1246 /* Add as 10base2/BNC media. */
1247 media = IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->serinst);
1248 ifmedia_add(ifm, media, 0, NULL);
1250 /* Report to user. */
1251 device_printf(sc->dev, "serial PHY detected (10Base2/BNC)\n");
1256 * Reset chip and update media.
1262 epic_softc_t *sc = xsc;
1263 struct ifnet *ifp = sc->ifp;
1268 /* If interface is already running, then we need not do anything. */
1269 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1274 /* Soft reset the chip (we have to power up card before). */
1275 CSR_WRITE_4(sc, GENCTL, 0);
1276 CSR_WRITE_4(sc, GENCTL, GENCTL_SOFT_RESET);
1279 * Reset takes 15 pci ticks which depends on PCI bus speed.
1280 * Assuming it >= 33000000 hz, we have wait at least 495e-6 sec.
1285 CSR_WRITE_4(sc, GENCTL, 0);
1287 /* Workaround for Application Note 7-15 */
1288 for (i = 0; i < 16; i++)
1289 CSR_WRITE_4(sc, TEST1, TEST1_CLOCK_TEST);
1291 /* Give rings to EPIC */
1292 CSR_WRITE_4(sc, PRCDAR, sc->rx_addr);
1293 CSR_WRITE_4(sc, PTCDAR, sc->tx_addr);
1295 /* Put node address to EPIC. */
1296 CSR_WRITE_4(sc, LAN0, ((u_int16_t *)IFP2ENADDR(sc->ifp))[0]);
1297 CSR_WRITE_4(sc, LAN1, ((u_int16_t *)IFP2ENADDR(sc->ifp))[1]);
1298 CSR_WRITE_4(sc, LAN2, ((u_int16_t *)IFP2ENADDR(sc->ifp))[2]);
1300 /* Set tx mode, includeing transmit threshold. */
1301 epic_set_tx_mode(sc);
1303 /* Compute and set RXCON. */
1304 epic_set_rx_mode(sc);
1306 /* Set multicast table. */
1307 epic_set_mc_table(sc);
1309 /* Enable interrupts by setting the interrupt mask. */
1310 CSR_WRITE_4(sc, INTMASK,
1311 INTSTAT_RCC | /* INTSTAT_RQE | INTSTAT_OVW | INTSTAT_RXE | */
1312 /* INTSTAT_TXC | */ INTSTAT_TCC | INTSTAT_TQE | INTSTAT_TXU |
1315 /* Acknowledge all pending interrupts. */
1316 CSR_WRITE_4(sc, INTSTAT, CSR_READ_4(sc, INTSTAT));
1318 /* Enable interrupts, set for PCI read multiple and etc */
1319 CSR_WRITE_4(sc, GENCTL,
1320 GENCTL_ENABLE_INTERRUPT | GENCTL_MEMORY_READ_MULTIPLE |
1321 GENCTL_ONECOPY | GENCTL_RECEIVE_FIFO_THRESHOLD64);
1323 /* Mark interface running ... */
1324 if (ifp->if_flags & IFF_UP)
1325 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1327 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1330 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1332 /* Start Rx process */
1333 epic_start_activity(sc);
1335 /* Set appropriate media */
1336 epic_ifmedia_upd(ifp);
1338 sc->stat_ch = timeout((timeout_t *)epic_stats_update, sc, hz);
1344 * Synopsis: calculate and set Rx mode. Chip must be in idle state to
1348 epic_set_rx_mode(sc)
1354 flags = sc->ifp->if_flags;
1355 rxcon = RXCON_DEFAULT;
1357 #ifdef EPIC_EARLY_RX
1358 rxcon |= RXCON_EARLY_RX;
1361 rxcon |= (flags & IFF_PROMISC) ? RXCON_PROMISCUOUS_MODE : 0;
1363 CSR_WRITE_4(sc, RXCON, rxcon);
1367 * Synopsis: Set transmit control register. Chip must be in idle state to
1371 epic_set_tx_mode(sc)
1375 if (sc->txcon & TXCON_EARLY_TRANSMIT_ENABLE)
1376 CSR_WRITE_4(sc, ETXTHR, sc->tx_threshold);
1378 CSR_WRITE_4(sc, TXCON, sc->txcon);
1382 * Synopsis: Program multicast filter honoring IFF_ALLMULTI and IFF_PROMISC
1383 * flags (note that setting PROMISC bit in EPIC's RXCON will only touch
1384 * individual frames, multicast filter must be manually programmed).
1386 * Note: EPIC must be in idle state.
1389 epic_set_mc_table(sc)
1393 struct ifmultiaddr *ifma;
1394 u_int16_t filter[4];
1398 if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
1399 CSR_WRITE_4(sc, MC0, 0xFFFF);
1400 CSR_WRITE_4(sc, MC1, 0xFFFF);
1401 CSR_WRITE_4(sc, MC2, 0xFFFF);
1402 CSR_WRITE_4(sc, MC3, 0xFFFF);
1412 #if __FreeBSD_version < 500000
1413 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1415 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1417 if (ifma->ifma_addr->sa_family != AF_LINK)
1419 h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
1420 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
1421 filter[h >> 4] |= 1 << (h & 0xF);
1423 IF_ADDR_UNLOCK(ifp);
1425 CSR_WRITE_4(sc, MC0, filter[0]);
1426 CSR_WRITE_4(sc, MC1, filter[1]);
1427 CSR_WRITE_4(sc, MC2, filter[2]);
1428 CSR_WRITE_4(sc, MC3, filter[3]);
1433 * Synopsis: Start receive process and transmit one, if they need.
1436 epic_start_activity(sc)
1440 /* Start rx process. */
1441 CSR_WRITE_4(sc, COMMAND, COMMAND_RXQUEUED | COMMAND_START_RX |
1442 (sc->pending_txs ? COMMAND_TXQUEUED : 0));
1446 * Synopsis: Completely stop Rx and Tx processes. If TQE is set additional
1447 * packet needs to be queued to stop Tx DMA.
1450 epic_stop_activity(sc)
1455 /* Stop Tx and Rx DMA. */
1456 CSR_WRITE_4(sc, COMMAND,
1457 COMMAND_STOP_RX | COMMAND_STOP_RDMA | COMMAND_STOP_TDMA);
1459 /* Wait Rx and Tx DMA to stop (why 1 ms ??? XXX). */
1460 for (i = 0; i < 0x1000; i++) {
1461 status = CSR_READ_4(sc, INTSTAT) &
1462 (INTSTAT_TXIDLE | INTSTAT_RXIDLE);
1463 if (status == (INTSTAT_TXIDLE | INTSTAT_RXIDLE))
1468 /* Catch all finished packets. */
1472 status = CSR_READ_4(sc, INTSTAT);
1474 if ((status & INTSTAT_RXIDLE) == 0)
1475 device_printf(sc->dev, "ERROR! Can't stop Rx DMA\n");
1477 if ((status & INTSTAT_TXIDLE) == 0)
1478 device_printf(sc->dev, "ERROR! Can't stop Tx DMA\n");
1481 * May need to queue one more packet if TQE, this is rare
1482 * but existing case.
1484 if ((status & INTSTAT_TQE) && !(status & INTSTAT_TXIDLE))
1485 (void)epic_queue_last_packet(sc);
1489 * The EPIC transmitter may stuck in TQE state. It will not go IDLE until
1490 * a packet from current descriptor will be copied to internal RAM. We
1491 * compose a dummy packet here and queue it for transmission.
1493 * XXX the packet will then be actually sent over network...
1496 epic_queue_last_packet(sc)
1499 struct epic_tx_desc *desc;
1500 struct epic_frag_list *flist;
1501 struct epic_tx_buffer *buf;
1505 device_printf(sc->dev, "queue last packet\n");
1507 desc = sc->tx_desc + sc->cur_tx;
1508 flist = sc->tx_flist + sc->cur_tx;
1509 buf = sc->tx_buffer + sc->cur_tx;
1511 if ((desc->status & 0x8000) || (buf->mbuf != NULL))
1514 MGETHDR(m0, M_DONTWAIT, MT_DATA);
1519 m0->m_len = min(MHLEN, ETHER_MIN_LEN - ETHER_CRC_LEN);
1520 m0->m_pkthdr.len = m0->m_len;
1521 m0->m_pkthdr.rcvif = sc->ifp;
1522 bzero(mtod(m0, caddr_t), m0->m_len);
1524 /* Fill fragments list. */
1525 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m0,
1526 epic_dma_map_txbuf, flist, 0);
1531 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREWRITE);
1533 /* Fill in descriptor. */
1536 sc->cur_tx = (sc->cur_tx + 1) & TX_RING_MASK;
1537 desc->control = 0x01;
1538 desc->txlength = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN);
1539 desc->status = 0x8000;
1540 bus_dmamap_sync(sc->ttag, sc->tmap,
1541 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1542 bus_dmamap_sync(sc->ftag, sc->fmap, BUS_DMASYNC_PREWRITE);
1544 /* Launch transmission. */
1545 CSR_WRITE_4(sc, COMMAND, COMMAND_STOP_TDMA | COMMAND_TXQUEUED);
1547 /* Wait Tx DMA to stop (for how long??? XXX) */
1548 for (i = 0; i < 1000; i++) {
1549 if (CSR_READ_4(sc, INTSTAT) & INTSTAT_TXIDLE)
1554 if ((CSR_READ_4(sc, INTSTAT) & INTSTAT_TXIDLE) == 0)
1555 device_printf(sc->dev, "ERROR! can't stop Tx DMA (2)\n");
1563 * Synopsis: Shut down board and deallocates rings.
1573 sc->ifp->if_timer = 0;
1575 untimeout((timeout_t *)epic_stats_update, sc, sc->stat_ch);
1577 /* Disable interrupts */
1578 CSR_WRITE_4(sc, INTMASK, 0);
1579 CSR_WRITE_4(sc, GENCTL, 0);
1581 /* Try to stop Rx and TX processes */
1582 epic_stop_activity(sc);
1585 CSR_WRITE_4(sc, GENCTL, GENCTL_SOFT_RESET);
1588 /* Make chip go to bed */
1589 CSR_WRITE_4(sc, GENCTL, GENCTL_POWER_DOWN);
1591 /* Mark as stoped */
1592 sc->ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1598 * Synopsis: This function should free all memory allocated for rings.
1606 for (i = 0; i < RX_RING_SIZE; i++) {
1607 struct epic_rx_buffer *buf = sc->rx_buffer + i;
1608 struct epic_rx_desc *desc = sc->rx_desc + i;
1611 desc->buflength = 0;
1615 bus_dmamap_unload(sc->mtag, buf->map);
1616 bus_dmamap_destroy(sc->mtag, buf->map);
1622 if (sc->sparemap != NULL)
1623 bus_dmamap_destroy(sc->mtag, sc->sparemap);
1625 for (i = 0; i < TX_RING_SIZE; i++) {
1626 struct epic_tx_buffer *buf = sc->tx_buffer + i;
1627 struct epic_tx_desc *desc = sc->tx_desc + i;
1630 desc->buflength = 0;
1634 bus_dmamap_unload(sc->mtag, buf->map);
1635 bus_dmamap_destroy(sc->mtag, buf->map);
1643 * Synopsis: Allocates mbufs for Rx ring and point Rx descs to them.
1644 * Point Tx descs to fragment lists. Check that all descs and fraglists
1645 * are bounded and aligned properly.
1653 sc->cur_rx = sc->cur_tx = sc->dirty_tx = sc->pending_txs = 0;
1655 /* Initialize the RX descriptor ring. */
1656 for (i = 0; i < RX_RING_SIZE; i++) {
1657 struct epic_rx_buffer *buf = sc->rx_buffer + i;
1658 struct epic_rx_desc *desc = sc->rx_desc + i;
1660 desc->status = 0; /* Owned by driver */
1661 desc->next = sc->rx_addr +
1662 ((i + 1) & RX_RING_MASK) * sizeof(struct epic_rx_desc);
1664 if ((desc->next & 3) ||
1665 ((desc->next & PAGE_MASK) + sizeof *desc) > PAGE_SIZE) {
1666 epic_free_rings(sc);
1670 buf->mbuf = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1671 if (buf->mbuf == NULL) {
1672 epic_free_rings(sc);
1675 buf->mbuf->m_len = buf->mbuf->m_pkthdr.len = MCLBYTES;
1676 m_adj(buf->mbuf, ETHER_ALIGN);
1678 error = bus_dmamap_create(sc->mtag, 0, &buf->map);
1680 epic_free_rings(sc);
1683 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, buf->mbuf,
1684 epic_dma_map_rxbuf, desc, 0);
1686 epic_free_rings(sc);
1689 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREREAD);
1691 desc->buflength = buf->mbuf->m_len; /* Max RX buffer length */
1692 desc->status = 0x8000; /* Set owner bit to NIC */
1694 bus_dmamap_sync(sc->rtag, sc->rmap,
1695 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1697 /* Create the spare DMA map. */
1698 error = bus_dmamap_create(sc->mtag, 0, &sc->sparemap);
1700 epic_free_rings(sc);
1704 /* Initialize the TX descriptor ring. */
1705 for (i = 0; i < TX_RING_SIZE; i++) {
1706 struct epic_tx_buffer *buf = sc->tx_buffer + i;
1707 struct epic_tx_desc *desc = sc->tx_desc + i;
1710 desc->next = sc->tx_addr +
1711 ((i + 1) & TX_RING_MASK) * sizeof(struct epic_tx_desc);
1713 if ((desc->next & 3) ||
1714 ((desc->next & PAGE_MASK) + sizeof *desc) > PAGE_SIZE) {
1715 epic_free_rings(sc);
1720 desc->bufaddr = sc->frag_addr +
1721 i * sizeof(struct epic_frag_list);
1723 if ((desc->bufaddr & 3) ||
1724 ((desc->bufaddr & PAGE_MASK) +
1725 sizeof(struct epic_frag_list)) > PAGE_SIZE) {
1726 epic_free_rings(sc);
1730 error = bus_dmamap_create(sc->mtag, 0, &buf->map);
1732 epic_free_rings(sc);
1736 bus_dmamap_sync(sc->ttag, sc->tmap,
1737 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1738 bus_dmamap_sync(sc->ftag, sc->fmap, BUS_DMASYNC_PREWRITE);
1744 * EEPROM operation functions
1747 epic_write_eepromreg(sc, val)
1753 CSR_WRITE_1(sc, EECTL, val);
1755 for (i = 0; i < 0xFF; i++) {
1756 if ((CSR_READ_1(sc, EECTL) & 0x20) == 0)
1762 epic_read_eepromreg(sc)
1766 return (CSR_READ_1(sc, EECTL));
1770 epic_eeprom_clock(sc, val)
1775 epic_write_eepromreg(sc, val);
1776 epic_write_eepromreg(sc, (val | 0x4));
1777 epic_write_eepromreg(sc, val);
1779 return (epic_read_eepromreg(sc));
1783 epic_output_eepromw(sc, val)
1789 for (i = 0xF; i >= 0; i--) {
1791 epic_eeprom_clock(sc, 0x0B);
1793 epic_eeprom_clock(sc, 0x03);
1798 epic_input_eepromw(sc)
1801 u_int16_t retval = 0;
1804 for (i = 0xF; i >= 0; i--) {
1805 if (epic_eeprom_clock(sc, 0x3) & 0x10)
1813 epic_read_eeprom(sc, loc)
1820 epic_write_eepromreg(sc, 3);
1822 if (epic_read_eepromreg(sc) & 0x40)
1823 read_cmd = (loc & 0x3F) | 0x180;
1825 read_cmd = (loc & 0xFF) | 0x600;
1827 epic_output_eepromw(sc, read_cmd);
1829 dataval = epic_input_eepromw(sc);
1831 epic_write_eepromreg(sc, 1);
1837 * Here goes MII read/write routines.
1840 epic_read_phy_reg(sc, phy, reg)
1846 CSR_WRITE_4(sc, MIICTL, ((reg << 4) | (phy << 9) | 0x01));
1848 for (i = 0; i < 0x100; i++) {
1849 if ((CSR_READ_4(sc, MIICTL) & 0x01) == 0)
1854 return (CSR_READ_4(sc, MIIDATA));
1858 epic_write_phy_reg(sc, phy, reg, val)
1864 CSR_WRITE_4(sc, MIIDATA, val);
1865 CSR_WRITE_4(sc, MIICTL, ((reg << 4) | (phy << 9) | 0x02));
1867 for(i = 0; i < 0x100; i++) {
1868 if ((CSR_READ_4(sc, MIICTL) & 0x02) == 0)
1875 epic_miibus_readreg(dev, phy, reg)
1881 sc = device_get_softc(dev);
1883 return (PHY_READ_2(sc, phy, reg));
1887 epic_miibus_writereg(dev, phy, reg, data)
1893 sc = device_get_softc(dev);
1895 PHY_WRITE_2(sc, phy, reg, data);