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" },
162 epic_probe(device_t dev)
166 t = epic_devtype(dev);
169 device_set_desc(dev, t->name);
170 return (BUS_PROBE_DEFAULT);
176 static struct epic_type *
177 epic_devtype(device_t dev)
183 while (t->name != NULL) {
184 if ((pci_get_vendor(dev) == t->ven_id) &&
185 (pci_get_device(dev) == t->dev_id)) {
193 #ifdef EPIC_USEIOSPACE
194 #define EPIC_RES SYS_RES_IOPORT
195 #define EPIC_RID PCIR_BASEIO
197 #define EPIC_RES SYS_RES_MEMORY
198 #define EPIC_RID PCIR_BASEMEM
202 epic_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
209 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
211 *addr = segs->ds_addr;
215 * Attach routine: map registers, allocate softc, rings and descriptors.
216 * Reset to known state.
219 epic_attach(device_t dev)
229 sc = device_get_softc(dev);
230 unit = device_get_unit(dev);
232 /* Preinitialize softc structure. */
236 /* Fill ifnet structure. */
237 ifp = sc->ifp = if_alloc(IFT_ETHER);
239 device_printf(dev, "can not if_alloc()\n");
243 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
245 ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST|IFF_NEEDSGIANT;
246 ifp->if_ioctl = epic_ifioctl;
247 ifp->if_start = epic_ifstart;
248 ifp->if_watchdog = epic_ifwatchdog;
249 ifp->if_init = epic_init;
251 ifp->if_baudrate = 10000000;
252 ifp->if_snd.ifq_maxlen = TX_RING_SIZE - 1;
254 /* Enable busmastering. */
255 pci_enable_busmaster(dev);
258 sc->res = bus_alloc_resource_any(dev, EPIC_RES, &rid, RF_ACTIVE);
259 if (sc->res == NULL) {
260 device_printf(dev, "couldn't map ports/memory\n");
265 sc->sc_st = rman_get_bustag(sc->res);
266 sc->sc_sh = rman_get_bushandle(sc->res);
268 /* Allocate interrupt. */
270 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
271 RF_SHAREABLE | RF_ACTIVE);
272 if (sc->irq == NULL) {
273 device_printf(dev, "couldn't map interrupt\n");
278 /* Allocate DMA tags. */
279 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
280 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES * EPIC_MAX_FRAGS,
281 EPIC_MAX_FRAGS, MCLBYTES, 0, busdma_lock_mutex, &Giant, &sc->mtag);
283 device_printf(dev, "couldn't allocate dma tag\n");
287 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
288 BUS_SPACE_MAXADDR, NULL, NULL,
289 sizeof(struct epic_rx_desc) * RX_RING_SIZE,
290 1, sizeof(struct epic_rx_desc) * RX_RING_SIZE, 0, busdma_lock_mutex,
293 device_printf(dev, "couldn't allocate dma tag\n");
297 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
298 BUS_SPACE_MAXADDR, NULL, NULL,
299 sizeof(struct epic_tx_desc) * TX_RING_SIZE,
300 1, sizeof(struct epic_tx_desc) * TX_RING_SIZE, 0,
301 busdma_lock_mutex, &Giant, &sc->ttag);
303 device_printf(dev, "couldn't allocate dma tag\n");
307 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
308 BUS_SPACE_MAXADDR, NULL, NULL,
309 sizeof(struct epic_frag_list) * TX_RING_SIZE,
310 1, sizeof(struct epic_frag_list) * TX_RING_SIZE, 0,
311 busdma_lock_mutex, &Giant, &sc->ftag);
313 device_printf(dev, "couldn't allocate dma tag\n");
317 /* Allocate DMA safe memory and get the DMA addresses. */
318 error = bus_dmamem_alloc(sc->ftag, (void **)&sc->tx_flist,
319 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->fmap);
321 device_printf(dev, "couldn't allocate dma memory\n");
324 error = bus_dmamap_load(sc->ftag, sc->fmap, sc->tx_flist,
325 sizeof(struct epic_frag_list) * TX_RING_SIZE, epic_dma_map_addr,
328 device_printf(dev, "couldn't map dma memory\n");
331 error = bus_dmamem_alloc(sc->ttag, (void **)&sc->tx_desc,
332 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tmap);
334 device_printf(dev, "couldn't allocate dma memory\n");
337 error = bus_dmamap_load(sc->ttag, sc->tmap, sc->tx_desc,
338 sizeof(struct epic_tx_desc) * TX_RING_SIZE, epic_dma_map_addr,
341 device_printf(dev, "couldn't map dma memory\n");
344 error = bus_dmamem_alloc(sc->rtag, (void **)&sc->rx_desc,
345 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rmap);
347 device_printf(dev, "couldn't allocate dma memory\n");
350 error = bus_dmamap_load(sc->rtag, sc->rmap, sc->rx_desc,
351 sizeof(struct epic_rx_desc) * RX_RING_SIZE, epic_dma_map_addr,
354 device_printf(dev, "couldn't map dma memory\n");
358 /* Bring the chip out of low-power mode. */
359 CSR_WRITE_4(sc, GENCTL, GENCTL_SOFT_RESET);
362 /* Workaround for Application Note 7-15. */
363 for (i = 0; i < 16; i++)
364 CSR_WRITE_4(sc, TEST1, TEST1_CLOCK_TEST);
366 /* Read MAC address from EEPROM. */
367 for (i = 0; i < ETHER_ADDR_LEN / sizeof(u_int16_t); i++)
368 ((u_int16_t *)eaddr)[i] = epic_read_eeprom(sc,i);
370 /* Set Non-Volatile Control Register from EEPROM. */
371 CSR_WRITE_4(sc, NVCTL, epic_read_eeprom(sc, EEPROM_NVCTL) & 0x1F);
374 sc->tx_threshold = TRANSMIT_THRESHOLD;
375 sc->txcon = TXCON_DEFAULT;
376 sc->miicfg = MIICFG_SMI_ENABLE;
377 sc->phyid = EPIC_UNKN_PHY;
381 sc->cardvend = pci_read_config(dev, PCIR_SUBVEND_0, 2);
382 sc->cardid = pci_read_config(dev, PCIR_SUBDEV_0, 2);
384 if (sc->cardvend != SMC_VENDORID)
385 device_printf(dev, "unknown card vendor %04xh\n", sc->cardvend);
387 /* Do ifmedia setup. */
388 if (mii_phy_probe(dev, &sc->miibus,
389 epic_ifmedia_upd, epic_ifmedia_sts)) {
390 device_printf(dev, "ERROR! MII without any PHY!?\n");
395 /* board type and ... */
397 for(i = 0x2c; i < 0x32; i++) {
398 tmp = epic_read_eeprom(sc, i);
399 if (' ' == (u_int8_t)tmp)
401 printf("%c", (u_int8_t)tmp);
403 if (' ' == (u_int8_t)tmp)
405 printf("%c", (u_int8_t)tmp);
409 /* Initialize rings. */
410 if (epic_init_rings(sc)) {
411 device_printf(dev, "failed to init rings\n");
416 ifp->if_hdrlen = sizeof(struct ether_vlan_header);
417 ifp->if_capabilities |= IFCAP_VLAN_MTU;
418 ifp->if_capenable |= IFCAP_VLAN_MTU;
419 callout_handle_init(&sc->stat_ch);
421 /* Activate our interrupt handler. */
422 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET,
423 epic_intr, sc, &sc->sc_ih);
425 device_printf(dev, "couldn't set up irq\n");
429 /* Attach to OS's managers. */
430 ether_ifattach(ifp, eaddr);
441 * Free any resources allocated by the driver.
444 epic_release(epic_softc_t *sc)
449 bus_release_resource(sc->dev, SYS_RES_IRQ, 0, sc->irq);
451 bus_release_resource(sc->dev, EPIC_RES, EPIC_RID, sc->res);
454 bus_dmamap_unload(sc->ftag, sc->fmap);
455 bus_dmamem_free(sc->ftag, sc->tx_flist, sc->fmap);
456 bus_dmamap_destroy(sc->ftag, sc->fmap);
459 bus_dmamap_unload(sc->ttag, sc->tmap);
460 bus_dmamem_free(sc->ttag, sc->tx_desc, sc->tmap);
461 bus_dmamap_destroy(sc->ttag, sc->tmap);
464 bus_dmamap_unload(sc->rtag, sc->rmap);
465 bus_dmamem_free(sc->rtag, sc->rx_desc, sc->rmap);
466 bus_dmamap_destroy(sc->rtag, sc->rmap);
469 bus_dma_tag_destroy(sc->mtag);
471 bus_dma_tag_destroy(sc->ftag);
473 bus_dma_tag_destroy(sc->ttag);
475 bus_dma_tag_destroy(sc->rtag);
479 * Detach driver and free resources.
482 epic_detach(device_t dev)
490 sc = device_get_softc(dev);
497 bus_generic_detach(dev);
498 device_delete_child(dev, sc->miibus);
500 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
510 * Stop all chip I/O so that the kernel's probe routines don't
511 * get confused by errant DMAs when rebooting.
514 epic_shutdown(device_t dev)
518 sc = device_get_softc(dev);
524 * This is if_ioctl handler.
527 epic_ifioctl(struct ifnet *ifp, u_long command, caddr_t data)
529 epic_softc_t *sc = ifp->if_softc;
530 struct mii_data *mii;
531 struct ifreq *ifr = (struct ifreq *) data;
538 if (ifp->if_mtu == ifr->ifr_mtu)
541 /* XXX Though the datasheet doesn't imply any
542 * limitations on RX and TX sizes beside max 64Kb
543 * DMA transfer, seems we can't send more then 1600
544 * data bytes per ethernet packet (transmitter hangs
545 * up if more data is sent).
547 if (ifr->ifr_mtu + ifp->if_hdrlen <= EPIC_MAX_MTU) {
548 ifp->if_mtu = ifr->ifr_mtu;
557 * If the interface is marked up and stopped, then start it.
558 * If it is marked down and running, then stop it.
560 if (ifp->if_flags & IFF_UP) {
561 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
566 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
572 /* Handle IFF_PROMISC and IFF_ALLMULTI flags. */
573 epic_stop_activity(sc);
574 epic_set_mc_table(sc);
575 epic_set_rx_mode(sc);
576 epic_start_activity(sc);
581 epic_set_mc_table(sc);
587 mii = device_get_softc(sc->miibus);
588 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
592 error = ether_ioctl(ifp, command, data);
600 epic_dma_map_txbuf(void *arg, bus_dma_segment_t *segs, int nseg,
601 bus_size_t mapsize, int error)
603 struct epic_frag_list *flist;
609 KASSERT(nseg <= EPIC_MAX_FRAGS, ("too many DMA segments"));
611 /* Fill fragments list. */
612 for (i = 0; i < nseg; i++) {
613 KASSERT(segs[i].ds_len <= MCLBYTES, ("segment size too large"));
614 flist->frag[i].fraglen = segs[i].ds_len;
615 flist->frag[i].fragaddr = segs[i].ds_addr;
617 flist->numfrags = nseg;
621 epic_dma_map_rxbuf(void *arg, bus_dma_segment_t *segs, int nseg,
622 bus_size_t mapsize, int error)
624 struct epic_rx_desc *desc;
629 KASSERT(nseg == 1, ("too many DMA segments"));
631 desc->bufaddr = segs->ds_addr;
635 * This is if_start handler. It takes mbufs from if_snd queue
636 * and queue them for transmit, one by one, until TX ring become full
637 * or queue become empty.
640 epic_ifstart(struct ifnet * ifp)
642 epic_softc_t *sc = ifp->if_softc;
643 struct epic_tx_buffer *buf;
644 struct epic_tx_desc *desc;
645 struct epic_frag_list *flist;
649 while (sc->pending_txs < TX_RING_SIZE) {
650 buf = sc->tx_buffer + sc->cur_tx;
651 desc = sc->tx_desc + sc->cur_tx;
652 flist = sc->tx_flist + sc->cur_tx;
654 /* Get next packet to send. */
655 IF_DEQUEUE(&ifp->if_snd, m0);
657 /* If nothing to send, return. */
661 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m0,
662 epic_dma_map_txbuf, flist, 0);
664 if (error && error != EFBIG) {
671 * If packet was more than EPIC_MAX_FRAGS parts,
672 * recopy packet to a newly allocated mbuf cluster.
675 m = m_defrag(m0, M_DONTWAIT);
684 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m,
685 epic_dma_map_txbuf, flist, 0);
692 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREWRITE);
696 sc->cur_tx = (sc->cur_tx + 1) & TX_RING_MASK;
697 desc->control = 0x01;
699 max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN);
700 desc->status = 0x8000;
701 bus_dmamap_sync(sc->ttag, sc->tmap,
702 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
703 bus_dmamap_sync(sc->ftag, sc->fmap, BUS_DMASYNC_PREWRITE);
704 CSR_WRITE_4(sc, COMMAND, COMMAND_TXQUEUED);
706 /* Set watchdog timer. */
712 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
716 * Synopsis: Finish all received frames.
719 epic_rx_done(epic_softc_t *sc)
721 struct ifnet *ifp = sc->ifp;
723 struct epic_rx_buffer *buf;
724 struct epic_rx_desc *desc;
729 bus_dmamap_sync(sc->rtag, sc->rmap, BUS_DMASYNC_POSTREAD);
730 while ((sc->rx_desc[sc->cur_rx].status & 0x8000) == 0) {
731 buf = sc->rx_buffer + sc->cur_rx;
732 desc = sc->rx_desc + sc->cur_rx;
734 /* Switch to next descriptor. */
735 sc->cur_rx = (sc->cur_rx + 1) & RX_RING_MASK;
738 * Check for RX errors. This should only happen if
739 * SAVE_ERRORED_PACKETS is set. RX errors generate
740 * RXE interrupt usually.
742 if ((desc->status & 1) == 0) {
744 desc->status = 0x8000;
748 /* Save packet length and mbuf contained packet. */
749 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_POSTREAD);
750 len = desc->rxlength - ETHER_CRC_LEN;
753 /* Try to get an mbuf cluster. */
754 buf->mbuf = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
755 if (buf->mbuf == NULL) {
757 desc->status = 0x8000;
761 buf->mbuf->m_len = buf->mbuf->m_pkthdr.len = MCLBYTES;
762 m_adj(buf->mbuf, ETHER_ALIGN);
764 /* Point to new mbuf, and give descriptor to chip. */
765 error = bus_dmamap_load_mbuf(sc->mtag, sc->sparemap, buf->mbuf,
766 epic_dma_map_rxbuf, desc, 0);
769 desc->status = 0x8000;
774 desc->status = 0x8000;
775 bus_dmamap_unload(sc->mtag, buf->map);
777 buf->map = sc->sparemap;
779 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREREAD);
781 /* First mbuf in packet holds the ethernet and packet headers */
782 m->m_pkthdr.rcvif = ifp;
783 m->m_pkthdr.len = m->m_len = len;
785 /* Give mbuf to OS. */
786 (*ifp->if_input)(ifp, m);
788 /* Successfuly received frame */
791 bus_dmamap_sync(sc->rtag, sc->rmap,
792 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
796 * Synopsis: Do last phase of transmission. I.e. if desc is
797 * transmitted, decrease pending_txs counter, free mbuf contained
798 * packet, switch to next descriptor and repeat until no packets
799 * are pending or descriptor is not transmitted yet.
802 epic_tx_done(epic_softc_t *sc)
804 struct epic_tx_buffer *buf;
805 struct epic_tx_desc *desc;
808 bus_dmamap_sync(sc->ttag, sc->tmap, BUS_DMASYNC_POSTREAD);
809 while (sc->pending_txs > 0) {
810 buf = sc->tx_buffer + sc->dirty_tx;
811 desc = sc->tx_desc + sc->dirty_tx;
812 status = desc->status;
815 * If packet is not transmitted, thou followed
816 * packets are not transmitted too.
821 /* Packet is transmitted. Switch to next and free mbuf. */
823 sc->dirty_tx = (sc->dirty_tx + 1) & TX_RING_MASK;
824 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_POSTWRITE);
825 bus_dmamap_unload(sc->mtag, buf->map);
829 /* Check for errors and collisions. */
831 sc->ifp->if_opackets++;
833 sc->ifp->if_oerrors++;
834 sc->ifp->if_collisions += (status >> 8) & 0x1F;
836 if ((status & 0x1001) == 0x1001)
837 device_printf(sc->dev,
838 "Tx ERROR: excessive coll. number\n");
842 if (sc->pending_txs < TX_RING_SIZE)
843 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
844 bus_dmamap_sync(sc->ttag, sc->tmap,
845 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
859 while (i-- && ((status = CSR_READ_4(sc, INTSTAT)) & INTSTAT_INT_ACTV)) {
860 CSR_WRITE_4(sc, INTSTAT, status);
862 if (status & (INTSTAT_RQE|INTSTAT_RCC|INTSTAT_OVW)) {
864 if (status & (INTSTAT_RQE|INTSTAT_OVW)) {
866 if (status & INTSTAT_OVW)
867 device_printf(sc->dev, "RX buffer overflow\n");
868 if (status & INTSTAT_RQE)
869 device_printf(sc->dev, "RX FIFO overflow\n");
871 if ((CSR_READ_4(sc, COMMAND) & COMMAND_RXQUEUED) == 0)
872 CSR_WRITE_4(sc, COMMAND, COMMAND_RXQUEUED);
873 sc->ifp->if_ierrors++;
877 if (status & (INTSTAT_TXC|INTSTAT_TCC|INTSTAT_TQE)) {
879 if (sc->ifp->if_snd.ifq_head != NULL)
880 epic_ifstart(sc->ifp);
883 /* Check for rare errors */
884 if (status & (INTSTAT_FATAL|INTSTAT_PMA|INTSTAT_PTA|
885 INTSTAT_APE|INTSTAT_DPE|INTSTAT_TXU|INTSTAT_RXE)) {
886 if (status & (INTSTAT_FATAL|INTSTAT_PMA|INTSTAT_PTA|
887 INTSTAT_APE|INTSTAT_DPE)) {
888 device_printf(sc->dev, "PCI fatal errors occured: %s%s%s%s\n",
889 (status & INTSTAT_PMA) ? "PMA " : "",
890 (status & INTSTAT_PTA) ? "PTA " : "",
891 (status & INTSTAT_APE) ? "APE " : "",
892 (status & INTSTAT_DPE) ? "DPE" : "");
899 if (status & INTSTAT_RXE) {
901 device_printf(sc->dev, "CRC/Alignment error\n");
903 sc->ifp->if_ierrors++;
906 if (status & INTSTAT_TXU) {
907 epic_tx_underrun(sc);
908 sc->ifp->if_oerrors++;
913 /* If no packets are pending, then no timeouts. */
914 if (sc->pending_txs == 0)
915 sc->ifp->if_timer = 0;
919 * Handle the TX underrun error: increase the TX threshold
920 * and restart the transmitter.
923 epic_tx_underrun(epic_softc_t *sc)
925 if (sc->tx_threshold > TRANSMIT_THRESHOLD_MAX) {
926 sc->txcon &= ~TXCON_EARLY_TRANSMIT_ENABLE;
928 device_printf(sc->dev, "Tx UNDERRUN: early TX disabled\n");
931 sc->tx_threshold += 0x40;
933 device_printf(sc->dev,
934 "Tx UNDERRUN: TX threshold increased to %d\n",
939 /* We must set TXUGO to reset the stuck transmitter. */
940 CSR_WRITE_4(sc, COMMAND, COMMAND_TXUGO);
942 /* Update the TX threshold */
943 epic_stop_activity(sc);
944 epic_set_tx_mode(sc);
945 epic_start_activity(sc);
949 * Synopsis: This one is called if packets wasn't transmitted
950 * during timeout. Try to deallocate transmitted packets, and
951 * if success continue to work.
954 epic_ifwatchdog(struct ifnet *ifp)
962 device_printf(sc->dev, "device timeout %d packets\n", sc->pending_txs);
964 /* Try to finish queued packets. */
967 /* If not successful. */
968 if (sc->pending_txs > 0) {
969 ifp->if_oerrors += sc->pending_txs;
971 /* Reinitialize board. */
972 device_printf(sc->dev, "reinitialization\n");
976 device_printf(sc->dev, "seems we can continue normaly\n");
979 if (ifp->if_snd.ifq_head)
986 * Despite the name of this function, it doesn't update statistics, it only
987 * helps in autonegotiation process.
990 epic_stats_update(epic_softc_t * sc)
992 struct mii_data * mii;
997 mii = device_get_softc(sc->miibus);
1000 sc->stat_ch = timeout((timeout_t *)epic_stats_update, sc, hz);
1006 * Set media options.
1009 epic_ifmedia_upd(struct ifnet *ifp)
1012 struct mii_data *mii;
1013 struct ifmedia *ifm;
1014 struct mii_softc *miisc;
1018 mii = device_get_softc(sc->miibus);
1019 ifm = &mii->mii_media;
1020 media = ifm->ifm_cur->ifm_media;
1022 /* Do not do anything if interface is not up. */
1023 if ((ifp->if_flags & IFF_UP) == 0)
1027 * Lookup current selected PHY.
1029 if (IFM_INST(media) == sc->serinst) {
1030 sc->phyid = EPIC_SERIAL;
1033 /* If we're not selecting serial interface, select MII mode. */
1034 sc->miicfg &= ~MIICFG_SERIAL_ENABLE;
1035 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1037 /* Default to unknown PHY. */
1038 sc->phyid = EPIC_UNKN_PHY;
1040 /* Lookup selected PHY. */
1041 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL;
1042 miisc = LIST_NEXT(miisc, mii_list)) {
1043 if (IFM_INST(media) == miisc->mii_inst) {
1049 /* Identify selected PHY. */
1051 int id1, id2, model, oui;
1053 id1 = PHY_READ(sc->physc, MII_PHYIDR1);
1054 id2 = PHY_READ(sc->physc, MII_PHYIDR2);
1056 oui = MII_OUI(id1, id2);
1057 model = MII_MODEL(id2);
1059 case MII_OUI_QUALSEMI:
1060 if (model == MII_MODEL_QUALSEMI_QS6612)
1061 sc->phyid = EPIC_QS6612_PHY;
1063 case MII_OUI_xxALTIMA:
1064 if (model == MII_MODEL_xxALTIMA_AC101)
1065 sc->phyid = EPIC_AC101_PHY;
1067 case MII_OUI_xxLEVEL1:
1068 if (model == MII_MODEL_xxLEVEL1_LXT970)
1069 sc->phyid = EPIC_LXT970_PHY;
1076 * Do PHY specific card setup.
1080 * Call this, to isolate all not selected PHYs and
1085 /* Do our own setup. */
1086 switch (sc->phyid) {
1087 case EPIC_QS6612_PHY:
1089 case EPIC_AC101_PHY:
1090 /* We have to powerup fiber tranceivers. */
1091 if (IFM_SUBTYPE(media) == IFM_100_FX)
1092 sc->miicfg |= MIICFG_694_ENABLE;
1094 sc->miicfg &= ~MIICFG_694_ENABLE;
1095 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1098 case EPIC_LXT970_PHY:
1099 /* We have to powerup fiber tranceivers. */
1100 cfg = PHY_READ(sc->physc, MII_LXTPHY_CONFIG);
1101 if (IFM_SUBTYPE(media) == IFM_100_FX)
1102 cfg |= CONFIG_LEDC1 | CONFIG_LEDC0;
1104 cfg &= ~(CONFIG_LEDC1 | CONFIG_LEDC0);
1105 PHY_WRITE(sc->physc, MII_LXTPHY_CONFIG, cfg);
1109 /* Select serial PHY (10base2/BNC usually). */
1110 sc->miicfg |= MIICFG_694_ENABLE | MIICFG_SERIAL_ENABLE;
1111 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1113 /* There is no driver to fill this. */
1114 mii->mii_media_active = media;
1115 mii->mii_media_status = 0;
1118 * We need to call this manually as it wasn't called
1119 * in mii_mediachg().
1121 epic_miibus_statchg(sc->dev);
1124 device_printf(sc->dev, "ERROR! Unknown PHY selected\n");
1132 * Report current media status.
1135 epic_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
1138 struct mii_data *mii;
1139 struct ifmedia *ifm;
1142 mii = device_get_softc(sc->miibus);
1143 ifm = &mii->mii_media;
1145 /* Nothing should be selected if interface is down. */
1146 if ((ifp->if_flags & IFF_UP) == 0) {
1147 ifmr->ifm_active = IFM_NONE;
1148 ifmr->ifm_status = 0;
1152 /* Call underlying pollstat, if not serial PHY. */
1153 if (sc->phyid != EPIC_SERIAL)
1156 /* Simply copy media info. */
1157 ifmr->ifm_active = mii->mii_media_active;
1158 ifmr->ifm_status = mii->mii_media_status;
1162 * Callback routine, called on media change.
1165 epic_miibus_statchg(device_t dev)
1168 struct mii_data *mii;
1171 sc = device_get_softc(dev);
1172 mii = device_get_softc(sc->miibus);
1173 media = mii->mii_media_active;
1175 sc->txcon &= ~(TXCON_LOOPBACK_MODE | TXCON_FULL_DUPLEX);
1178 * If we are in full-duplex mode or loopback operation,
1179 * we need to decouple receiver and transmitter.
1181 if (IFM_OPTIONS(media) & (IFM_FDX | IFM_LOOP))
1182 sc->txcon |= TXCON_FULL_DUPLEX;
1184 /* On some cards we need manualy set fullduplex led. */
1185 if (sc->cardid == SMC9432FTX ||
1186 sc->cardid == SMC9432FTX_SC) {
1187 if (IFM_OPTIONS(media) & IFM_FDX)
1188 sc->miicfg |= MIICFG_694_ENABLE;
1190 sc->miicfg &= ~MIICFG_694_ENABLE;
1192 CSR_WRITE_4(sc, MIICFG, sc->miicfg);
1195 /* Update baudrate. */
1196 if (IFM_SUBTYPE(media) == IFM_100_TX ||
1197 IFM_SUBTYPE(media) == IFM_100_FX)
1198 sc->ifp->if_baudrate = 100000000;
1200 sc->ifp->if_baudrate = 10000000;
1202 epic_stop_activity(sc);
1203 epic_set_tx_mode(sc);
1204 epic_start_activity(sc);
1208 epic_miibus_mediainit(device_t dev)
1211 struct mii_data *mii;
1212 struct ifmedia *ifm;
1215 sc = device_get_softc(dev);
1216 mii = device_get_softc(sc->miibus);
1217 ifm = &mii->mii_media;
1220 * Add Serial Media Interface if present, this applies to
1223 if (CSR_READ_4(sc, MIICFG) & MIICFG_PHY_PRESENT) {
1224 /* Store its instance. */
1225 sc->serinst = mii->mii_instance++;
1227 /* Add as 10base2/BNC media. */
1228 media = IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->serinst);
1229 ifmedia_add(ifm, media, 0, NULL);
1231 /* Report to user. */
1232 device_printf(sc->dev, "serial PHY detected (10Base2/BNC)\n");
1237 * Reset chip and update media.
1240 epic_init(void *xsc)
1242 epic_softc_t *sc = xsc;
1243 struct ifnet *ifp = sc->ifp;
1248 /* If interface is already running, then we need not do anything. */
1249 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1254 /* Soft reset the chip (we have to power up card before). */
1255 CSR_WRITE_4(sc, GENCTL, 0);
1256 CSR_WRITE_4(sc, GENCTL, GENCTL_SOFT_RESET);
1259 * Reset takes 15 pci ticks which depends on PCI bus speed.
1260 * Assuming it >= 33000000 hz, we have wait at least 495e-6 sec.
1265 CSR_WRITE_4(sc, GENCTL, 0);
1267 /* Workaround for Application Note 7-15 */
1268 for (i = 0; i < 16; i++)
1269 CSR_WRITE_4(sc, TEST1, TEST1_CLOCK_TEST);
1271 /* Give rings to EPIC */
1272 CSR_WRITE_4(sc, PRCDAR, sc->rx_addr);
1273 CSR_WRITE_4(sc, PTCDAR, sc->tx_addr);
1275 /* Put node address to EPIC. */
1276 CSR_WRITE_4(sc, LAN0, ((u_int16_t *)IF_LLADDR(sc->ifp))[0]);
1277 CSR_WRITE_4(sc, LAN1, ((u_int16_t *)IF_LLADDR(sc->ifp))[1]);
1278 CSR_WRITE_4(sc, LAN2, ((u_int16_t *)IF_LLADDR(sc->ifp))[2]);
1280 /* Set tx mode, includeing transmit threshold. */
1281 epic_set_tx_mode(sc);
1283 /* Compute and set RXCON. */
1284 epic_set_rx_mode(sc);
1286 /* Set multicast table. */
1287 epic_set_mc_table(sc);
1289 /* Enable interrupts by setting the interrupt mask. */
1290 CSR_WRITE_4(sc, INTMASK,
1291 INTSTAT_RCC | /* INTSTAT_RQE | INTSTAT_OVW | INTSTAT_RXE | */
1292 /* INTSTAT_TXC | */ INTSTAT_TCC | INTSTAT_TQE | INTSTAT_TXU |
1295 /* Acknowledge all pending interrupts. */
1296 CSR_WRITE_4(sc, INTSTAT, CSR_READ_4(sc, INTSTAT));
1298 /* Enable interrupts, set for PCI read multiple and etc */
1299 CSR_WRITE_4(sc, GENCTL,
1300 GENCTL_ENABLE_INTERRUPT | GENCTL_MEMORY_READ_MULTIPLE |
1301 GENCTL_ONECOPY | GENCTL_RECEIVE_FIFO_THRESHOLD64);
1303 /* Mark interface running ... */
1304 if (ifp->if_flags & IFF_UP)
1305 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1307 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1310 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1312 /* Start Rx process */
1313 epic_start_activity(sc);
1315 /* Set appropriate media */
1316 epic_ifmedia_upd(ifp);
1318 sc->stat_ch = timeout((timeout_t *)epic_stats_update, sc, hz);
1324 * Synopsis: calculate and set Rx mode. Chip must be in idle state to
1328 epic_set_rx_mode(epic_softc_t *sc)
1333 flags = sc->ifp->if_flags;
1334 rxcon = RXCON_DEFAULT;
1336 #ifdef EPIC_EARLY_RX
1337 rxcon |= RXCON_EARLY_RX;
1340 rxcon |= (flags & IFF_PROMISC) ? RXCON_PROMISCUOUS_MODE : 0;
1342 CSR_WRITE_4(sc, RXCON, rxcon);
1346 * Synopsis: Set transmit control register. Chip must be in idle state to
1350 epic_set_tx_mode(epic_softc_t *sc)
1353 if (sc->txcon & TXCON_EARLY_TRANSMIT_ENABLE)
1354 CSR_WRITE_4(sc, ETXTHR, sc->tx_threshold);
1356 CSR_WRITE_4(sc, TXCON, sc->txcon);
1360 * Synopsis: Program multicast filter honoring IFF_ALLMULTI and IFF_PROMISC
1361 * flags (note that setting PROMISC bit in EPIC's RXCON will only touch
1362 * individual frames, multicast filter must be manually programmed).
1364 * Note: EPIC must be in idle state.
1367 epic_set_mc_table(epic_softc_t *sc)
1370 struct ifmultiaddr *ifma;
1371 u_int16_t filter[4];
1375 if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
1376 CSR_WRITE_4(sc, MC0, 0xFFFF);
1377 CSR_WRITE_4(sc, MC1, 0xFFFF);
1378 CSR_WRITE_4(sc, MC2, 0xFFFF);
1379 CSR_WRITE_4(sc, MC3, 0xFFFF);
1389 #if __FreeBSD_version < 500000
1390 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1392 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1394 if (ifma->ifma_addr->sa_family != AF_LINK)
1396 h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
1397 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
1398 filter[h >> 4] |= 1 << (h & 0xF);
1400 IF_ADDR_UNLOCK(ifp);
1402 CSR_WRITE_4(sc, MC0, filter[0]);
1403 CSR_WRITE_4(sc, MC1, filter[1]);
1404 CSR_WRITE_4(sc, MC2, filter[2]);
1405 CSR_WRITE_4(sc, MC3, filter[3]);
1410 * Synopsis: Start receive process and transmit one, if they need.
1413 epic_start_activity(epic_softc_t *sc)
1416 /* Start rx process. */
1417 CSR_WRITE_4(sc, COMMAND, COMMAND_RXQUEUED | COMMAND_START_RX |
1418 (sc->pending_txs ? COMMAND_TXQUEUED : 0));
1422 * Synopsis: Completely stop Rx and Tx processes. If TQE is set additional
1423 * packet needs to be queued to stop Tx DMA.
1426 epic_stop_activity(epic_softc_t *sc)
1430 /* Stop Tx and Rx DMA. */
1431 CSR_WRITE_4(sc, COMMAND,
1432 COMMAND_STOP_RX | COMMAND_STOP_RDMA | COMMAND_STOP_TDMA);
1434 /* Wait Rx and Tx DMA to stop (why 1 ms ??? XXX). */
1435 for (i = 0; i < 0x1000; i++) {
1436 status = CSR_READ_4(sc, INTSTAT) &
1437 (INTSTAT_TXIDLE | INTSTAT_RXIDLE);
1438 if (status == (INTSTAT_TXIDLE | INTSTAT_RXIDLE))
1443 /* Catch all finished packets. */
1447 status = CSR_READ_4(sc, INTSTAT);
1449 if ((status & INTSTAT_RXIDLE) == 0)
1450 device_printf(sc->dev, "ERROR! Can't stop Rx DMA\n");
1452 if ((status & INTSTAT_TXIDLE) == 0)
1453 device_printf(sc->dev, "ERROR! Can't stop Tx DMA\n");
1456 * May need to queue one more packet if TQE, this is rare
1457 * but existing case.
1459 if ((status & INTSTAT_TQE) && !(status & INTSTAT_TXIDLE))
1460 (void)epic_queue_last_packet(sc);
1464 * The EPIC transmitter may stuck in TQE state. It will not go IDLE until
1465 * a packet from current descriptor will be copied to internal RAM. We
1466 * compose a dummy packet here and queue it for transmission.
1468 * XXX the packet will then be actually sent over network...
1471 epic_queue_last_packet(epic_softc_t *sc)
1473 struct epic_tx_desc *desc;
1474 struct epic_frag_list *flist;
1475 struct epic_tx_buffer *buf;
1479 device_printf(sc->dev, "queue last packet\n");
1481 desc = sc->tx_desc + sc->cur_tx;
1482 flist = sc->tx_flist + sc->cur_tx;
1483 buf = sc->tx_buffer + sc->cur_tx;
1485 if ((desc->status & 0x8000) || (buf->mbuf != NULL))
1488 MGETHDR(m0, M_DONTWAIT, MT_DATA);
1493 m0->m_len = min(MHLEN, ETHER_MIN_LEN - ETHER_CRC_LEN);
1494 m0->m_pkthdr.len = m0->m_len;
1495 m0->m_pkthdr.rcvif = sc->ifp;
1496 bzero(mtod(m0, caddr_t), m0->m_len);
1498 /* Fill fragments list. */
1499 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m0,
1500 epic_dma_map_txbuf, flist, 0);
1505 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREWRITE);
1507 /* Fill in descriptor. */
1510 sc->cur_tx = (sc->cur_tx + 1) & TX_RING_MASK;
1511 desc->control = 0x01;
1512 desc->txlength = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN);
1513 desc->status = 0x8000;
1514 bus_dmamap_sync(sc->ttag, sc->tmap,
1515 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1516 bus_dmamap_sync(sc->ftag, sc->fmap, BUS_DMASYNC_PREWRITE);
1518 /* Launch transmission. */
1519 CSR_WRITE_4(sc, COMMAND, COMMAND_STOP_TDMA | COMMAND_TXQUEUED);
1521 /* Wait Tx DMA to stop (for how long??? XXX) */
1522 for (i = 0; i < 1000; i++) {
1523 if (CSR_READ_4(sc, INTSTAT) & INTSTAT_TXIDLE)
1528 if ((CSR_READ_4(sc, INTSTAT) & INTSTAT_TXIDLE) == 0)
1529 device_printf(sc->dev, "ERROR! can't stop Tx DMA (2)\n");
1537 * Synopsis: Shut down board and deallocates rings.
1540 epic_stop(epic_softc_t *sc)
1546 sc->ifp->if_timer = 0;
1548 untimeout((timeout_t *)epic_stats_update, sc, sc->stat_ch);
1550 /* Disable interrupts */
1551 CSR_WRITE_4(sc, INTMASK, 0);
1552 CSR_WRITE_4(sc, GENCTL, 0);
1554 /* Try to stop Rx and TX processes */
1555 epic_stop_activity(sc);
1558 CSR_WRITE_4(sc, GENCTL, GENCTL_SOFT_RESET);
1561 /* Make chip go to bed */
1562 CSR_WRITE_4(sc, GENCTL, GENCTL_POWER_DOWN);
1564 /* Mark as stoped */
1565 sc->ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1571 * Synopsis: This function should free all memory allocated for rings.
1574 epic_free_rings(epic_softc_t *sc)
1578 for (i = 0; i < RX_RING_SIZE; i++) {
1579 struct epic_rx_buffer *buf = sc->rx_buffer + i;
1580 struct epic_rx_desc *desc = sc->rx_desc + i;
1583 desc->buflength = 0;
1587 bus_dmamap_unload(sc->mtag, buf->map);
1588 bus_dmamap_destroy(sc->mtag, buf->map);
1594 if (sc->sparemap != NULL)
1595 bus_dmamap_destroy(sc->mtag, sc->sparemap);
1597 for (i = 0; i < TX_RING_SIZE; i++) {
1598 struct epic_tx_buffer *buf = sc->tx_buffer + i;
1599 struct epic_tx_desc *desc = sc->tx_desc + i;
1602 desc->buflength = 0;
1606 bus_dmamap_unload(sc->mtag, buf->map);
1607 bus_dmamap_destroy(sc->mtag, buf->map);
1615 * Synopsis: Allocates mbufs for Rx ring and point Rx descs to them.
1616 * Point Tx descs to fragment lists. Check that all descs and fraglists
1617 * are bounded and aligned properly.
1620 epic_init_rings(epic_softc_t *sc)
1624 sc->cur_rx = sc->cur_tx = sc->dirty_tx = sc->pending_txs = 0;
1626 /* Initialize the RX descriptor ring. */
1627 for (i = 0; i < RX_RING_SIZE; i++) {
1628 struct epic_rx_buffer *buf = sc->rx_buffer + i;
1629 struct epic_rx_desc *desc = sc->rx_desc + i;
1631 desc->status = 0; /* Owned by driver */
1632 desc->next = sc->rx_addr +
1633 ((i + 1) & RX_RING_MASK) * sizeof(struct epic_rx_desc);
1635 if ((desc->next & 3) ||
1636 ((desc->next & PAGE_MASK) + sizeof *desc) > PAGE_SIZE) {
1637 epic_free_rings(sc);
1641 buf->mbuf = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1642 if (buf->mbuf == NULL) {
1643 epic_free_rings(sc);
1646 buf->mbuf->m_len = buf->mbuf->m_pkthdr.len = MCLBYTES;
1647 m_adj(buf->mbuf, ETHER_ALIGN);
1649 error = bus_dmamap_create(sc->mtag, 0, &buf->map);
1651 epic_free_rings(sc);
1654 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, buf->mbuf,
1655 epic_dma_map_rxbuf, desc, 0);
1657 epic_free_rings(sc);
1660 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREREAD);
1662 desc->buflength = buf->mbuf->m_len; /* Max RX buffer length */
1663 desc->status = 0x8000; /* Set owner bit to NIC */
1665 bus_dmamap_sync(sc->rtag, sc->rmap,
1666 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1668 /* Create the spare DMA map. */
1669 error = bus_dmamap_create(sc->mtag, 0, &sc->sparemap);
1671 epic_free_rings(sc);
1675 /* Initialize the TX descriptor ring. */
1676 for (i = 0; i < TX_RING_SIZE; i++) {
1677 struct epic_tx_buffer *buf = sc->tx_buffer + i;
1678 struct epic_tx_desc *desc = sc->tx_desc + i;
1681 desc->next = sc->tx_addr +
1682 ((i + 1) & TX_RING_MASK) * sizeof(struct epic_tx_desc);
1684 if ((desc->next & 3) ||
1685 ((desc->next & PAGE_MASK) + sizeof *desc) > PAGE_SIZE) {
1686 epic_free_rings(sc);
1691 desc->bufaddr = sc->frag_addr +
1692 i * sizeof(struct epic_frag_list);
1694 if ((desc->bufaddr & 3) ||
1695 ((desc->bufaddr & PAGE_MASK) +
1696 sizeof(struct epic_frag_list)) > PAGE_SIZE) {
1697 epic_free_rings(sc);
1701 error = bus_dmamap_create(sc->mtag, 0, &buf->map);
1703 epic_free_rings(sc);
1707 bus_dmamap_sync(sc->ttag, sc->tmap,
1708 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1709 bus_dmamap_sync(sc->ftag, sc->fmap, BUS_DMASYNC_PREWRITE);
1715 * EEPROM operation functions
1718 epic_write_eepromreg(epic_softc_t *sc, u_int8_t val)
1722 CSR_WRITE_1(sc, EECTL, val);
1724 for (i = 0; i < 0xFF; i++) {
1725 if ((CSR_READ_1(sc, EECTL) & 0x20) == 0)
1731 epic_read_eepromreg(epic_softc_t *sc)
1734 return (CSR_READ_1(sc, EECTL));
1738 epic_eeprom_clock(epic_softc_t *sc, u_int8_t val)
1741 epic_write_eepromreg(sc, val);
1742 epic_write_eepromreg(sc, (val | 0x4));
1743 epic_write_eepromreg(sc, val);
1745 return (epic_read_eepromreg(sc));
1749 epic_output_eepromw(epic_softc_t *sc, u_int16_t val)
1753 for (i = 0xF; i >= 0; i--) {
1755 epic_eeprom_clock(sc, 0x0B);
1757 epic_eeprom_clock(sc, 0x03);
1762 epic_input_eepromw(epic_softc_t *sc)
1764 u_int16_t retval = 0;
1767 for (i = 0xF; i >= 0; i--) {
1768 if (epic_eeprom_clock(sc, 0x3) & 0x10)
1776 epic_read_eeprom(epic_softc_t *sc, u_int16_t loc)
1781 epic_write_eepromreg(sc, 3);
1783 if (epic_read_eepromreg(sc) & 0x40)
1784 read_cmd = (loc & 0x3F) | 0x180;
1786 read_cmd = (loc & 0xFF) | 0x600;
1788 epic_output_eepromw(sc, read_cmd);
1790 dataval = epic_input_eepromw(sc);
1792 epic_write_eepromreg(sc, 1);
1798 * Here goes MII read/write routines.
1801 epic_read_phy_reg(epic_softc_t *sc, int phy, int reg)
1805 CSR_WRITE_4(sc, MIICTL, ((reg << 4) | (phy << 9) | 0x01));
1807 for (i = 0; i < 0x100; i++) {
1808 if ((CSR_READ_4(sc, MIICTL) & 0x01) == 0)
1813 return (CSR_READ_4(sc, MIIDATA));
1817 epic_write_phy_reg(epic_softc_t *sc, int phy, int reg, int val)
1821 CSR_WRITE_4(sc, MIIDATA, val);
1822 CSR_WRITE_4(sc, MIICTL, ((reg << 4) | (phy << 9) | 0x02));
1824 for(i = 0; i < 0x100; i++) {
1825 if ((CSR_READ_4(sc, MIICTL) & 0x02) == 0)
1832 epic_miibus_readreg(device_t dev, int phy, int reg)
1836 sc = device_get_softc(dev);
1838 return (PHY_READ_2(sc, phy, reg));
1842 epic_miibus_writereg(device_t dev, int phy, int reg, int data)
1846 sc = device_get_softc(dev);
1848 PHY_WRITE_2(sc, phy, reg, data);