2 * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
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.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Herb Peyerl.
16 * 4. The name of Herb Peyerl may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 * $FreeBSD: src/sys/dev/vx/if_vx.c,v 1.25.2.6 2002/02/13 00:43:10 dillon Exp $
31 * $DragonFly: src/sys/dev/netif/vx/if_vx.c,v 1.17 2005/05/27 15:36:10 joerg Exp $
36 * Created from if_ep.c driver by Fred Gray (fgray@rice.edu) to support
41 * Modified from the FreeBSD 1.1.5.1 version by:
43 * INRIA - Sophia Antipolis, France
44 * avega@sophia.inria.fr
48 * Promiscuous mode added and interrupt logic slightly changed
49 * to reduce the number of adapter failures. Transceiver select
50 * logic changed to use value from EEPROM. Autoconfiguration
54 * Chelindbank (Chelyabinsk, Russia)
55 * babkin@hq.icb.chel.su
58 #include <sys/param.h>
59 #include <sys/systm.h>
60 #include <sys/sockio.h>
61 #include <sys/malloc.h>
63 #include <sys/socket.h>
64 #include <sys/linker_set.h>
65 #include <sys/module.h>
68 #include <net/ifq_var.h>
70 #include <net/ethernet.h>
71 #include <net/if_arp.h>
73 #include <machine/bus_pio.h>
74 #include <machine/bus.h>
78 #include <machine/clock.h>
82 #define ETHER_MAX_LEN 1518
83 #define ETHER_ADDR_LEN 6
85 DECLARE_DUMMY_MODULE(if_vx);
87 static struct connector_entry {
90 } conn_tab[VX_CONNECTORS] = {
91 #define CONNECTOR_UTP 0
93 #define CONNECTOR_AUI 1
97 #define CONNECTOR_BNC 3
99 #define CONNECTOR_TX 4
101 #define CONNECTOR_FX 5
103 #define CONNECTOR_MII 6
108 /* int vxattach (struct vx_softc *); */
109 static void vxtxstat (struct vx_softc *);
110 static int vxstatus (struct vx_softc *);
111 static void vxinit (void *);
112 static int vxioctl (struct ifnet *, u_long, caddr_t, struct ucred *);
113 static void vxstart (struct ifnet *ifp);
114 static void vxwatchdog (struct ifnet *);
115 static void vxreset (struct vx_softc *);
116 /* void vxstop (struct vx_softc *); */
117 static void vxread (struct vx_softc *);
118 static struct mbuf *vxget (struct vx_softc *, u_int);
119 static void vxmbuffill (void *);
120 static void vxmbufempty (struct vx_softc *);
121 static void vxsetfilter (struct vx_softc *);
122 static void vxgetlink (struct vx_softc *);
123 static void vxsetlink (struct vx_softc *);
124 /* int vxbusyeeprom (struct vx_softc *); */
130 struct ifnet *ifp = &sc->arpcom.ac_if;
133 callout_init(&sc->vx_timer);
135 CSR_WRITE_2(sc, VX_COMMAND, GLOBAL_RESET);
141 * Read the station address from the eeprom
144 for (i = 0; i < 3; i++) {
146 if (vxbusyeeprom(sc))
148 CSR_WRITE_2(sc, VX_W0_EEPROM_COMMAND, EEPROM_CMD_RD
149 | (EEPROM_OEM_ADDR_0 + i));
150 if (vxbusyeeprom(sc))
152 x = CSR_READ_2(sc, VX_W0_EEPROM_DATA);
153 sc->arpcom.ac_enaddr[(i << 1)] = x >> 8;
154 sc->arpcom.ac_enaddr[(i << 1) + 1] = x;
157 if_initname(ifp, "vx", sc->unit);
158 ifp->if_mtu = ETHERMTU;
159 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
160 ifq_set_ready(&ifp->if_snd);
161 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
162 ifp->if_start = vxstart;
163 ifp->if_ioctl = vxioctl;
164 ifp->if_init = vxinit;
165 ifp->if_watchdog = vxwatchdog;
168 ether_ifattach(ifp, sc->arpcom.ac_enaddr);
170 sc->tx_start_thresh = 20; /* probably a good starting point. */
180 * The order in here seems important. Otherwise we may not receive
187 struct vx_softc *sc = (struct vx_softc *) xsc;
188 struct ifnet *ifp = &sc->arpcom.ac_if;
195 for (i = 0; i < 6; i++) /* Reload the ether_addr. */
196 CSR_WRITE_1(sc, VX_W2_ADDR_0 + i, sc->arpcom.ac_enaddr[i]);
198 CSR_WRITE_2(sc, VX_COMMAND, RX_RESET);
200 CSR_WRITE_2(sc, VX_COMMAND, TX_RESET);
203 GO_WINDOW(1); /* Window 1 is operating window */
204 for (i = 0; i < 31; i++)
205 CSR_READ_1(sc, VX_W1_TX_STATUS);
207 CSR_WRITE_2(sc, VX_COMMAND,SET_RD_0_MASK | S_CARD_FAILURE |
208 S_RX_COMPLETE | S_TX_COMPLETE | S_TX_AVAIL);
209 CSR_WRITE_2(sc, VX_COMMAND,SET_INTR_MASK | S_CARD_FAILURE |
210 S_RX_COMPLETE | S_TX_COMPLETE | S_TX_AVAIL);
213 * Attempt to get rid of any stray interrupts that occured during
214 * configuration. On the i386 this isn't possible because one may
215 * already be queued. However, a single stray interrupt is
218 CSR_WRITE_2(sc, VX_COMMAND, ACK_INTR | 0xff);
223 CSR_WRITE_2(sc, VX_COMMAND, RX_ENABLE);
224 CSR_WRITE_2(sc, VX_COMMAND, TX_ENABLE);
226 vxmbuffill((caddr_t) sc);
228 /* Interface is now `running', with no output active. */
229 ifp->if_flags |= IFF_RUNNING;
230 ifp->if_flags &= ~IFF_OACTIVE;
232 /* Attempt to start output, if any. */
240 struct ifnet *ifp = &sc->arpcom.ac_if;
242 GO_WINDOW(1); /* Window 1 is operating window */
243 CSR_WRITE_2(sc, VX_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL | FIL_BRDCST |
245 ((ifp->if_flags & IFF_PROMISC) ? FIL_PROMISC : 0 ));
255 sc->vx_connectors = CSR_READ_2(sc, VX_W3_RESET_OPT) & 0x7f;
256 for (n = 0, k = 0; k < VX_CONNECTORS; k++) {
257 if (sc->vx_connectors & conn_tab[k].bit) {
261 printf("%s", conn_tab[k].name);
265 if (sc->vx_connectors == 0) {
266 printf("no connectors!");
270 sc->vx_connector = (CSR_READ_4(sc, VX_W3_INTERNAL_CFG)
271 & INTERNAL_CONNECTOR_MASK)
272 >> INTERNAL_CONNECTOR_BITS;
273 if (sc->vx_connector & 0x10) {
274 sc->vx_connector &= 0x0f;
275 printf("[*%s*]", conn_tab[(int)sc->vx_connector].name);
276 printf(": disable 'auto select' with DOS util!");
278 printf("[*%s*]", conn_tab[(int)sc->vx_connector].name);
286 struct ifnet *ifp = &sc->arpcom.ac_if;
288 char *reason, *warning;
289 static short prev_flags;
290 static char prev_conn = -1;
292 if (prev_conn == -1) {
293 prev_conn = sc->vx_connector;
299 * Now behavior was slightly changed:
301 * if any of flags link[0-2] is used and its connector is
302 * physically present the following connectors are used:
304 * link0 - AUI * highest precedence
306 * link2 - UTP * lowest precedence
308 * If none of them is specified then
309 * connector specified in the EEPROM is used
310 * (if present on card or UTP if not).
313 i = sc->vx_connector; /* default in EEPROM */
317 if (ifp->if_flags & IFF_LINK0) {
318 if (sc->vx_connectors & conn_tab[CONNECTOR_AUI].bit) {
322 warning = "aui not present! (link0)";
324 } else if (ifp->if_flags & IFF_LINK1) {
325 if (sc->vx_connectors & conn_tab[CONNECTOR_BNC].bit) {
329 warning = "bnc not present! (link1)";
331 } else if (ifp->if_flags & IFF_LINK2) {
332 if (sc->vx_connectors & conn_tab[CONNECTOR_UTP].bit) {
336 warning = "utp not present! (link2)";
338 } else if ((sc->vx_connectors & conn_tab[(int)sc->vx_connector].bit) == 0) {
339 warning = "strange connector type in EEPROM.";
344 /* Avoid unnecessary message. */
345 k = (prev_flags ^ ifp->if_flags) & (IFF_LINK0 | IFF_LINK1 | IFF_LINK2);
346 if ((k != 0) || (prev_conn != i)) {
348 printf("vx%d: warning: %s\n", sc->unit, warning);
350 printf("vx%d: selected %s. (%s)\n",
351 sc->unit, conn_tab[i].name, reason);
354 /* Set the selected connector. */
356 j = CSR_READ_4(sc, VX_W3_INTERNAL_CFG) & ~INTERNAL_CONNECTOR_MASK;
357 CSR_WRITE_4(sc, VX_W3_INTERNAL_CFG, j | (i <<INTERNAL_CONNECTOR_BITS));
359 /* First, disable all. */
360 CSR_WRITE_2(sc,VX_COMMAND, STOP_TRANSCEIVER);
363 CSR_WRITE_2(sc, VX_W4_MEDIA_TYPE, 0);
365 /* Second, enable the selected one. */
369 CSR_WRITE_2(sc, VX_W4_MEDIA_TYPE, ENABLE_UTP);
372 CSR_WRITE_2(sc, VX_COMMAND, START_TRANSCEIVER);
378 CSR_WRITE_2(sc, VX_W4_MEDIA_TYPE, LINKBEAT_ENABLE);
380 default: /* AUI and MII fall here */
385 prev_flags = ifp->if_flags;
393 struct vx_softc *sc = ifp->if_softc;
397 /* Don't transmit if interface is busy or not running */
398 if ((sc->arpcom.ac_if.if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING)
402 /* Sneak a peek at the next packet */
403 m0 = ifq_poll(&ifp->if_snd);
406 /* We need to use m->m_pkthdr.len, so require the header */
407 if ((m0->m_flags & M_PKTHDR) == 0)
408 panic("vxstart: no header mbuf");
409 len = m0->m_pkthdr.len;
414 * The 3c509 automatically pads short packets to minimum ethernet length,
415 * but we drop packets that are too large. Perhaps we should truncate
418 if (len + pad > ETHER_MAX_LEN) {
419 /* packet is obviously too large: toss it */
421 m0 = ifq_dequeue(&ifp->if_snd);
426 if (CSR_READ_2(sc, VX_W1_FREE_TX) < len + pad + 4) {
427 CSR_WRITE_2(sc, VX_COMMAND, SET_TX_AVAIL_THRESH | ((len + pad + 4) >> 2));
428 /* not enough room in FIFO */
429 if (CSR_READ_2(sc, VX_W1_FREE_TX) < len + pad + 4) { /* make sure */
430 ifp->if_flags |= IFF_OACTIVE;
435 CSR_WRITE_2(sc, VX_COMMAND, SET_TX_AVAIL_THRESH | (8188 >> 2));
436 m0 = ifq_dequeue(&ifp->if_snd);
439 CSR_WRITE_2(sc, VX_COMMAND, SET_TX_START_THRESH |
440 ((len / 4 + sc->tx_start_thresh) >> 2));
442 BPF_MTAP(&sc->arpcom.ac_if, m0);
445 * Do the output at splhigh() so that an interrupt from another device
446 * won't cause a FIFO underrun.
450 CSR_WRITE_4(sc, VX_W1_TX_PIO_WR_1, len | TX_INDICATE);
454 bus_space_write_multi_4(sc->vx_btag, sc->vx_bhandle,
456 (u_int32_t *)mtod(m0, caddr_t), m0->m_len / 4);
458 bus_space_write_multi_1(sc->vx_btag, sc->vx_bhandle,
460 mtod(m0, caddr_t) + (m0->m_len & ~3), m0->m_len & 3);
464 CSR_WRITE_1(sc, VX_W1_TX_PIO_WR_1, 0); /* Padding */
472 if ((CSR_READ_2(sc, VX_W1_RX_STATUS) & ERR_INCOMPLETE) == 0) {
473 /* We received a complete packet. */
475 if ((CSR_READ_2(sc, VX_STATUS) & S_INTR_LATCH) == 0) {
477 * No interrupt, read the packet and continue
478 * Is this supposed to happen? Is my motherboard
483 /* Got an interrupt, return so that it gets serviced. */
486 /* Check if we are stuck and reset [see XXX comment] */
488 if (ifp->if_flags & IFF_DEBUG)
489 printf("%s: adapter reset\n", ifp->if_xname);
498 * XXX: The 3c509 card can get in a mode where both the fifo status bit
499 * FIFOS_RX_OVERRUN and the status bit ERR_INCOMPLETE are set
500 * We detect this situation and we reset the adapter.
501 * It happens at times when there is a lot of broadcast traffic
502 * on the cable (once in a blue moon).
511 * Check the FIFO status and act accordingly
514 fifost = CSR_READ_2(sc, VX_W4_FIFO_DIAG);
517 if (fifost & FIFOS_RX_UNDERRUN) {
518 if (sc->arpcom.ac_if.if_flags & IFF_DEBUG)
519 printf("vx%d: RX underrun\n", sc->unit);
524 if (fifost & FIFOS_RX_STATUS_OVERRUN) {
525 if (sc->arpcom.ac_if.if_flags & IFF_DEBUG)
526 printf("vx%d: RX Status overrun\n", sc->unit);
530 if (fifost & FIFOS_RX_OVERRUN) {
531 if (sc->arpcom.ac_if.if_flags & IFF_DEBUG)
532 printf("vx%d: RX overrun\n", sc->unit);
536 if (fifost & FIFOS_TX_OVERRUN) {
537 if (sc->arpcom.ac_if.if_flags & IFF_DEBUG)
538 printf("vx%d: TX overrun\n", sc->unit);
553 * We need to read+write TX_STATUS until we get a 0 status
554 * in order to turn off the interrupt flag.
556 while ((i = CSR_READ_1(sc, VX_W1_TX_STATUS)) & TXS_COMPLETE) {
557 CSR_WRITE_1(sc, VX_W1_TX_STATUS, 0x0);
559 if (i & TXS_JABBER) {
560 ++sc->arpcom.ac_if.if_oerrors;
561 if (sc->arpcom.ac_if.if_flags & IFF_DEBUG)
562 printf("vx%d: jabber (%x)\n", sc->unit, i);
564 } else if (i & TXS_UNDERRUN) {
565 ++sc->arpcom.ac_if.if_oerrors;
566 if (sc->arpcom.ac_if.if_flags & IFF_DEBUG)
567 printf("vx%d: fifo underrun (%x) @%d\n",
568 sc->unit, i, sc->tx_start_thresh);
569 if (sc->tx_succ_ok < 100)
570 sc->tx_start_thresh = min(ETHER_MAX_LEN, sc->tx_start_thresh + 20);
573 } else if (i & TXS_MAX_COLLISION) {
574 ++sc->arpcom.ac_if.if_collisions;
575 CSR_WRITE_2(sc, VX_COMMAND, TX_ENABLE);
576 sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
578 sc->tx_succ_ok = (sc->tx_succ_ok+1) & 127;
587 struct vx_softc *sc = voidsc;
588 struct ifnet *ifp = &sc->arpcom.ac_if;
591 CSR_WRITE_2(sc, VX_COMMAND, C_INTR_LATCH);
593 status = CSR_READ_2(sc, VX_STATUS);
595 if ((status & (S_TX_COMPLETE | S_TX_AVAIL |
596 S_RX_COMPLETE | S_CARD_FAILURE)) == 0)
600 * Acknowledge any interrupts. It's important that we do this
601 * first, since there would otherwise be a race condition.
602 * Due to the i386 interrupt queueing, we may get spurious
603 * interrupts occasionally.
605 CSR_WRITE_2(sc, VX_COMMAND, ACK_INTR | status);
607 if (status & S_RX_COMPLETE)
609 if (status & S_TX_AVAIL) {
611 sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
612 vxstart(&sc->arpcom.ac_if);
614 if (status & S_CARD_FAILURE) {
615 printf("vx%d: adapter failure (%x)\n", sc->unit, status);
620 if (status & S_TX_COMPLETE) {
627 /* no more interrupts */
635 struct ifnet *ifp = &sc->arpcom.ac_if;
637 struct ether_header *eh;
640 len = CSR_READ_2(sc, VX_W1_RX_STATUS);
644 if (ifp->if_flags & IFF_DEBUG) {
645 int err = len & ERR_MASK;
648 if (len & ERR_INCOMPLETE)
649 s = "incomplete packet";
650 else if (err == ERR_OVERRUN)
651 s = "packet overrun";
652 else if (err == ERR_RUNT)
654 else if (err == ERR_ALIGNMENT)
656 else if (err == ERR_CRC)
658 else if (err == ERR_OVERSIZE)
659 s = "oversized packet";
660 else if (err == ERR_DRIBBLE)
664 printf("vx%d: %s\n", sc->unit, s);
667 if (len & ERR_INCOMPLETE)
675 len &= RX_BYTES_MASK; /* Lower 11 bits = RX bytes. */
677 /* Pull packet off interface. */
686 /* We assume the header fit entirely in one mbuf. */
687 eh = mtod(m, struct ether_header *);
690 * XXX: Some cards seem to be in promiscous mode all the time.
691 * we need to make sure we only get our own stuff always.
695 if ((eh->ether_dhost[0] & 1) == 0 /* !mcast and !bcast */
696 && bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, ETHER_ADDR_LEN) != 0) {
701 (*ifp->if_input)(ifp, m);
704 * In periods of high traffic we can actually receive enough
705 * packets so that the fifo overrun bit will be set at this point,
706 * even though we just read a packet. In this case we
707 * are not going to receive any more interrupts. We check for
708 * this condition and read again until the fifo is not full.
709 * We could simplify this test by not using vxstatus(), but
710 * rechecking the RX_STATUS register directly. This test could
711 * result in unnecessary looping in cases where there is a new
712 * packet but the fifo is not full, but it will not fix the
715 * Even with this improvement, we still get packet overrun errors
716 * which are hurting performance. Maybe when I get some more time
717 * I'll modify vxread() so that it can handle RX_EARLY interrupts.
720 len = CSR_READ_2(sc, VX_W1_RX_STATUS);
721 /* Check if we are stuck and reset [see XXX comment] */
722 if (len & ERR_INCOMPLETE) {
723 if (ifp->if_flags & IFF_DEBUG)
724 printf("vx%d: adapter reset\n", sc->unit);
734 CSR_WRITE_2(sc, VX_COMMAND, RX_DISCARD_TOP_PACK);
742 struct ifnet *ifp = &sc->arpcom.ac_if;
743 struct mbuf *top, **mp, *m;
747 m = sc->mb[sc->next_mb];
748 sc->mb[sc->next_mb] = 0;
750 MGETHDR(m, MB_DONTWAIT, MT_DATA);
754 /* If the queue is no longer full, refill. */
755 if (sc->last_mb == sc->next_mb && sc->buffill_pending == 0) {
756 callout_reset(&sc->vx_timer, 1, vxmbuffill, sc);
757 sc->buffill_pending = 1;
759 /* Convert one of our saved mbuf's. */
760 sc->next_mb = (sc->next_mb + 1) % MAX_MBS;
761 m->m_data = m->m_pktdat;
762 m->m_flags = M_PKTHDR;
763 bzero(&m->m_pkthdr, sizeof(m->m_pkthdr));
765 m->m_pkthdr.rcvif = ifp;
766 m->m_pkthdr.len = totlen;
772 * We read the packet at splhigh() so that an interrupt from another
773 * device doesn't cause the card's buffer to overflow while we're
774 * reading it. We may still lose packets at other times.
779 * Since we don't set allowLargePackets bit in MacControl register,
780 * we can assume that totlen <= 1500bytes.
781 * The while loop will be performed iff we have a packet with
782 * MLEN < m_len < MINCLSIZE.
786 m = sc->mb[sc->next_mb];
787 sc->mb[sc->next_mb] = 0;
789 MGET(m, MB_DONTWAIT, MT_DATA);
796 sc->next_mb = (sc->next_mb + 1) % MAX_MBS;
800 if (totlen >= MINCLSIZE) {
801 MCLGET(m, MB_DONTWAIT);
802 if (m->m_flags & M_EXT)
805 len = min(totlen, len);
807 bus_space_read_multi_4(sc->vx_btag, sc->vx_bhandle,
808 VX_W1_RX_PIO_RD_1, mtod(m, u_int32_t *), len / 4);
810 bus_space_read_multi_1(sc->vx_btag, sc->vx_bhandle,
811 VX_W1_RX_PIO_RD_1, mtod(m, u_int8_t *) + (len & ~3),
820 CSR_WRITE_2(sc, VX_COMMAND, RX_DISCARD_TOP_PACK);
829 vxioctl(ifp, cmd, data, cr)
835 struct vx_softc *sc = ifp->if_softc;
836 struct ifreq *ifr = (struct ifreq *) data;
843 if ((ifp->if_flags & IFF_UP) == 0 &&
844 (ifp->if_flags & IFF_RUNNING) != 0) {
846 * If interface is marked up and it is stopped, then
850 ifp->if_flags &= ~IFF_RUNNING;
851 } else if ((ifp->if_flags & IFF_UP) != 0 &&
852 (ifp->if_flags & IFF_RUNNING) == 0) {
854 * If interface is marked up and it is stopped, then
860 * deal with flags changes:
861 * IFF_MULTICAST, IFF_PROMISC,
862 * IFF_LINK0, IFF_LINK1,
871 * Set the interface MTU.
873 if (ifr->ifr_mtu > ETHERMTU) {
876 ifp->if_mtu = ifr->ifr_mtu;
883 * Multicast list has changed; set the hardware filter
892 ether_ioctl(ifp, cmd, data);
917 struct vx_softc *sc = ifp->if_softc;
919 if (ifp->if_flags & IFF_DEBUG)
920 printf("%s: device timeout\n", ifp->if_xname);
921 ifp->if_flags &= ~IFF_OACTIVE;
930 struct ifnet *ifp = &sc->arpcom.ac_if;
934 CSR_WRITE_2(sc, VX_COMMAND, RX_DISABLE);
935 CSR_WRITE_2(sc, VX_COMMAND, RX_DISCARD_TOP_PACK);
937 CSR_WRITE_2(sc, VX_COMMAND, TX_DISABLE);
938 CSR_WRITE_2(sc, VX_COMMAND, STOP_TRANSCEIVER);
940 CSR_WRITE_2(sc, VX_COMMAND, RX_RESET);
942 CSR_WRITE_2(sc, VX_COMMAND, TX_RESET);
944 CSR_WRITE_2(sc, VX_COMMAND, C_INTR_LATCH);
945 CSR_WRITE_2(sc, VX_COMMAND, SET_RD_0_MASK);
946 CSR_WRITE_2(sc, VX_COMMAND, SET_INTR_MASK);
947 CSR_WRITE_2(sc, VX_COMMAND, SET_RX_FILTER);
959 j = CSR_READ_2(sc, VX_W0_EEPROM_COMMAND);
966 printf("vx%d: eeprom failed to come ready\n", sc->unit);
976 struct vx_softc *sc = (struct vx_softc *) sp;
982 if (sc->mb[i] == NULL)
983 MGET(sc->mb[i], MB_DONTWAIT, MT_DATA);
984 if (sc->mb[i] == NULL)
986 i = (i + 1) % MAX_MBS;
987 } while (i != sc->next_mb);
989 /* If the queue was not filled, try again. */
990 if (sc->last_mb != sc->next_mb) {
991 callout_reset(&sc->vx_timer, 1, vxmbuffill, sc);
992 sc->buffill_pending = 1;
994 sc->buffill_pending = 0;
1001 struct vx_softc *sc;
1006 for (i = 0; i < MAX_MBS; i++) {
1012 sc->last_mb = sc->next_mb = 0;
1013 if (sc->buffill_pending != 0)
1014 callout_stop(&sc->vx_timer);