1 /* $NetBSD: smc90cx6.c,v 1.38 2001/07/07 15:57:53 thorpej Exp $ */
2 /* $FreeBSD: src/sys/dev/cm/smc90cx6.c,v 1.1.2.3 2003/02/05 18:42:14 fjoe Exp $ */
3 /* $DragonFly: src/sys/dev/netif/cm/Attic/smc90cx6.c,v 1.5 2003/11/20 22:07:26 dillon Exp $ */
6 * Copyright (c) 1994, 1995, 1998 The NetBSD Foundation, Inc.
9 * This code is derived from software contributed to The NetBSD Foundation
10 * by Ignatios Souvatzis.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the NetBSD
23 * Foundation, Inc. and its contributors.
24 * 4. Neither the name of The NetBSD Foundation nor the names of its
25 * contributors may be used to endorse or promote products derived
26 * from this software without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGE.
42 * Chip core driver for the SMC90c26 / SMC90c56 (and SMC90c66 in '56
43 * compatibility mode) boards
46 /* #define CMSOFTCOPY */
47 #define CMRETRANSMIT /**/
48 /* #define CM_DEBUG */
50 #include <sys/param.h>
51 #include <sys/systm.h>
52 #include <sys/sockio.h>
54 #include <sys/module.h>
55 #include <sys/kernel.h>
56 #include <sys/socket.h>
57 #include <sys/syslog.h>
60 #include <machine/bus.h>
62 #include <machine/resource.h>
64 #if __FreeBSD_version < 500000
65 #include <machine/clock.h>
69 #include <net/if_dl.h>
70 #include <net/if_types.h>
71 #include <net/if_arc.h>
73 #include "smc90cx6reg.h"
74 #include "smc90cx6var.h"
76 DECLARE_DUMMY_MODULE(if_cm);
77 MODULE_DEPEND(if_cm, arcnet, 1, 1, 1);
79 /* these should be elsewhere */
82 #define ARC_MIN_FORBID_LEN 254
83 #define ARC_MAX_FORBID_LEN 256
84 #define ARC_MAX_LEN 508
85 #define ARC_ADDR_LEN 1
87 /* for watchdog timer. This should be more than enough. */
88 #define ARCTIMEOUT (5*IFNET_SLOWHZ)
93 bus_space_read_1(rman_get_bustag((sc)->port_res), \
94 rman_get_bushandle((sc)->port_res), \
96 #define PUTREG(off, value) \
97 bus_space_write_1(rman_get_bustag((sc)->port_res), \
98 rman_get_bushandle((sc)->port_res), \
100 #define GETMEM(off) \
101 bus_space_read_1(rman_get_bustag((sc)->mem_res), \
102 rman_get_bushandle((sc)->mem_res), \
104 #define PUTMEM(off, value) \
105 bus_space_write_1(rman_get_bustag((sc)->mem_res), \
106 rman_get_bushandle((sc)->mem_res), \
109 devclass_t cm_devclass;
112 * This currently uses 2 bufs for tx, 2 for rx
116 * rx has a fillcount variable. If fillcount > (NRXBUF-1),
117 * rx can be switched off from rx hard int.
118 * Else rx is restarted on the other receiver.
119 * rx soft int counts down. if it is == (NRXBUF-1), it restarts
121 * To ensure packet ordering (we need that for 1201 later), we have a counter
122 * which is incremented modulo 256 on each receive and a per buffer
123 * variable, which is set to the counter on filling. The soft int can
124 * compare both values to determine the older packet.
126 * Transmit direction:
128 * cm_start checks tx_fillcount
131 * else fill tx_act ^ 1 && inc tx_fillcount
133 * check tx_fillcount again.
134 * case 2: set IFF_OACTIVE to stop arc_output from filling us.
137 * tint clears IFF_OCATIVE, decrements and checks tx_fillcount
138 * case 1: start tx on tx_act ^ 1, softcall cm_start
139 * case 0: softcall cm_start
141 * #define fill(i) get mbuf && copy mbuf to chip(i)
144 void cm_init (void *);
145 void cm_reset (struct cm_softc *);
146 void cm_start (struct ifnet *);
147 int cm_ioctl (struct ifnet *, unsigned long, caddr_t);
148 void cm_watchdog (struct ifnet *);
149 void cm_srint (void *vsc);
150 static void cm_tint (struct cm_softc *, int);
151 void cm_reconwatch(void *);
158 struct cm_softc *sc = device_get_softc(dev);
160 error = cm_alloc_port(dev, 0, CM_IO_PORTS);
164 if (GETREG(CMSTAT) == 0xff)
167 error = cm_alloc_memory(dev, 0, 0x800);
175 * Allocate a port resource with the given resource id.
178 cm_alloc_port(dev, rid, size)
183 struct cm_softc *sc = device_get_softc(dev);
184 struct resource *res;
186 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
187 0ul, ~0ul, size, RF_ACTIVE);
191 sc->port_used = size;
199 * Allocate a memory resource with the given resource id.
202 cm_alloc_memory(dev, rid, size)
207 struct cm_softc *sc = device_get_softc(dev);
208 struct resource *res;
210 res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
211 0ul, ~0ul, size, RF_ACTIVE);
223 * Allocate an irq resource with the given resource id.
226 cm_alloc_irq(dev, rid)
230 struct cm_softc *sc = device_get_softc(dev);
231 struct resource *res;
233 res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
234 0ul, ~0ul, 1, RF_ACTIVE);
245 * Release all resources
248 cm_release_resources(dev)
251 struct cm_softc *sc = device_get_softc(dev);
254 bus_deactivate_resource(dev, SYS_RES_IOPORT,
255 sc->port_rid, sc->port_res);
256 bus_release_resource(dev, SYS_RES_IOPORT,
257 sc->port_rid, sc->port_res);
261 bus_deactivate_resource(dev, SYS_RES_MEMORY,
262 sc->mem_rid, sc->mem_res);
263 bus_release_resource(dev, SYS_RES_MEMORY,
264 sc->mem_rid, sc->mem_res);
268 bus_deactivate_resource(dev, SYS_RES_IRQ,
269 sc->irq_rid, sc->irq_res);
270 bus_release_resource(dev, SYS_RES_IRQ,
271 sc->irq_rid, sc->irq_res);
281 struct ifnet *ifp = &sc->sc_arccom.ac_if;
283 u_int8_t linkaddress;
288 * read the arcnet address from the board
294 } while (!(GETREG(CMSTAT) & CM_POR));
296 linkaddress = GETMEM(CMMACOFF);
298 /* clear the int mask... */
303 PUTREG(CMCMD, CM_CONF(CONF_LONG));
304 PUTREG(CMCMD, CM_CLR(CLR_POR|CLR_RECONFIG));
305 sc->sc_recontime = sc->sc_reconcount = 0;
307 /* and reenable kernel int level */
311 * set interface to stopped condition (reset)
319 ifp->if_output = arc_output;
320 ifp->if_start = cm_start;
321 ifp->if_ioctl = cm_ioctl;
322 ifp->if_watchdog = cm_watchdog;
323 ifp->if_init = cm_init;
324 /* XXX IFQ_SET_READY(&ifp->if_snd); */
325 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
327 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX;
329 arc_ifattach(ifp, linkaddress);
332 sc->sc_rxcookie = softintr_establish(IPL_SOFTNET, cm_srint, sc);
333 sc->sc_txcookie = softintr_establish(IPL_SOFTNET,
334 (void (*) (void *))cm_start, ifp);
337 #if __FreeBSD_version < 500000
338 callout_init(&sc->sc_recon_ch);
340 callout_init(&sc->sc_recon_ch, 0);
344 printf("%s%d: link addr 0x%02x (%d)\n",
345 ifp->if_name, ifp->if_unit, linkaddress, linkaddress);
357 struct cm_softc *sc = (struct cm_softc *)xsc;
361 ifp = &sc->sc_arccom.ac_if;
363 if ((ifp->if_flags & IFF_RUNNING) == 0) {
365 ifp->if_flags |= IFF_RUNNING;
373 * Reset the interface...
375 * this assumes that it is called inside a critical section...
385 ifp = &sc->sc_arccom.ac_if;
388 printf("%s%d: reset\n", ifp->if_name, ifp->if_unit);
390 /* stop and restart hardware */
395 } while (!(GETREG(CMSTAT) & CM_POR));
397 linkaddress = GETMEM(CMMACOFF);
399 #if defined(CM_DEBUG) && (CM_DEBUG > 2)
400 printf("%s%d: reset: card reset, link addr = 0x%02x (%d)\n",
401 ifp->if_name, ifp->if_unit, linkaddress, linkaddress);
404 /* tell the routing level about the (possibly changed) link address */
405 arc_storelladdr(ifp, linkaddress);
408 /* POR is NMI, but we need it below: */
409 sc->sc_intmask = CM_RECON|CM_POR;
410 PUTREG(CMSTAT, sc->sc_intmask);
411 PUTREG(CMCMD, CM_CONF(CONF_LONG));
414 printf("%s%d: reset: chip configured, status=0x%02x\n",
415 ifp->if_name, ifp->if_unit, GETREG(CMSTAT));
417 PUTREG(CMCMD, CM_CLR(CLR_POR|CLR_RECONFIG));
420 printf("%s%d: reset: bits cleared, status=0x%02x\n",
421 ifp->if_name, ifp->if_unit, GETREG(CMSTAT));
424 sc->sc_reconcount_excessive = ARC_EXCESSIVE_RECONS;
428 sc->sc_intmask |= CM_RI;
429 sc->sc_rx_fillcount = 0;
432 PUTREG(CMCMD, CM_RXBC(2));
433 PUTREG(CMSTAT, sc->sc_intmask);
436 printf("%s%d: reset: started receiver, status=0x%02x\n",
437 ifp->if_name, ifp->if_unit, GETREG(CMSTAT));
440 /* and init transmitter status */
442 sc->sc_tx_fillcount = 0;
444 ifp->if_flags |= IFF_RUNNING;
445 ifp->if_flags &= ~IFF_OACTIVE;
451 * Take interface offline
457 /* Stop the interrupts */
460 /* Stop the interface */
463 /* Stop watchdog timer */
464 sc->sc_arccom.ac_if.if_timer = 0;
468 * Start output on interface. Get another datagram to send
469 * off the interface queue, and copy it to the
470 * interface becore starting the output
472 * this assumes that it is called inside a critical section...
473 * XXX hm... does it still?
480 struct cm_softc *sc = ifp->if_softc;
484 int len, tlen, offset, s, buffer;
486 u_long copystart, lencopy, perbyte;
489 #if defined(CM_DEBUG) && (CM_DEBUG > 3)
490 printf("%s%d: start(%p)\n", ifp->if_name, ifp->if_unit, ifp);
493 if ((ifp->if_flags & IFF_RUNNING) == 0)
498 if (sc->sc_tx_fillcount >= 2) {
503 m = arc_frag_next(ifp);
504 buffer = sc->sc_tx_act ^ 1;
512 if (m->m_len < ARC_HDRLEN)
513 m = m_pullup(m, ARC_HDRLEN);/* gcc does structure padding */
514 printf("%s%d: start: filling %d from %d to %d type %d\n",
515 ifp->if_name, ifp->if_unit, buffer, mtod(m, u_char *)[0],
516 mtod(m, u_char *)[1], mtod(m, u_char *)[2]);
521 cm_ram_ptr = buffer * 512;
526 /* write the addresses to RAM and throw them away */
529 * Hardware does this: Yet Another Microsecond Saved.
530 * (btw, timing code says usually 2 microseconds)
531 * PUTMEM(cm_ram_ptr + 0, mtod(m, u_char *)[0]);
534 PUTMEM(cm_ram_ptr + 1, mtod(m, u_char *)[1]);
537 /* get total length left at this point */
538 tlen = m->m_pkthdr.len;
539 if (tlen < ARC_MIN_FORBID_LEN) {
541 PUTMEM(cm_ram_ptr + 2, offset);
543 PUTMEM(cm_ram_ptr + 2, 0);
544 if (tlen <= ARC_MAX_FORBID_LEN)
545 offset = 255; /* !!! */
547 if (tlen > ARC_MAX_LEN)
551 PUTMEM(cm_ram_ptr + 3, offset);
554 cm_ram_ptr += offset;
556 /* lets loop through the mbuf chain */
558 for (mp = m; mp; mp = mp->m_next) {
559 if ((len = mp->m_len)) { /* YAMS */
560 bus_space_write_region_1(
561 rman_get_bustag(sc->mem_res),
562 rman_get_bushandle(sc->mem_res),
563 cm_ram_ptr, mtod(mp, caddr_t), len);
569 sc->sc_broadcast[buffer] = (m->m_flags & M_BCAST) != 0;
570 sc->sc_retransmits[buffer] = (m->m_flags & M_BCAST) ? 1 : 5;
572 /* actually transmit the packet */
575 if (++sc->sc_tx_fillcount > 1) {
577 * We are filled up to the rim. No more bufs for the moment,
580 ifp->if_flags |= IFF_OACTIVE;
583 printf("%s%d: start: starting transmitter on buffer %d\n",
584 ifp->if_name, ifp->if_unit, buffer);
586 /* Transmitter was off, start it */
587 sc->sc_tx_act = buffer;
590 * We still can accept another buf, so don't:
591 * ifp->if_flags |= IFF_OACTIVE;
593 sc->sc_intmask |= CM_TA;
594 PUTREG(CMCMD, CM_TX(buffer));
595 PUTREG(CMSTAT, sc->sc_intmask);
597 sc->sc_arccom.ac_if.if_timer = ARCTIMEOUT;
603 * After 10 times reading the docs, I realized
604 * that in the case the receiver NAKs the buffer request,
605 * the hardware retries till shutdown.
606 * This is integrated now in the code above.
613 * Arcnet interface receiver soft interrupt:
614 * get the stuff out of any filled buffer we find.
620 struct cm_softc *sc = (struct cm_softc *)vsc;
621 int buffer, len, offset, s, type;
624 struct arc_header *ah;
627 ifp = &sc->sc_arccom.ac_if;
630 buffer = sc->sc_rx_act ^ 1;
633 /* Allocate header mbuf */
634 MGETHDR(m, M_DONTWAIT, MT_DATA);
638 * in case s.th. goes wrong with mem, drop it
639 * to make sure the receiver can be started again
640 * count it as input error (we dont have any other
647 m->m_pkthdr.rcvif = ifp;
650 * Align so that IP packet will be longword aligned. Here we
651 * assume that m_data of new packet is longword aligned.
652 * When implementing PHDS, we might have to change it to 2,
653 * (2*sizeof(ulong) - CM_HDRNEWLEN)), packet type dependent.
656 cm_ram_ptr = buffer * 512;
657 offset = GETMEM(cm_ram_ptr + 2);
661 offset = GETMEM(cm_ram_ptr + 3);
666 * first +2 bytes for align fixup below
667 * second +2 bytes are for src/dst addresses
669 if ((len + 2 + 2) > MHLEN) {
670 /* attach an mbuf cluster */
671 MCLGET(m, M_DONTWAIT);
673 /* Insist on getting a cluster */
674 if ((m->m_flags & M_EXT) == 0) {
685 type = GETMEM(cm_ram_ptr + offset);
686 m->m_data += 1 + arc_isphds(type);
687 /* mbuf filled with ARCnet addresses */
688 m->m_pkthdr.len = m->m_len = len + 2;
690 ah = mtod(m, struct arc_header *);
691 ah->arc_shost = GETMEM(cm_ram_ptr + 0);
692 ah->arc_dhost = GETMEM(cm_ram_ptr + 1);
694 bus_space_read_region_1(
695 rman_get_bustag(sc->mem_res), rman_get_bushandle(sc->mem_res),
696 cm_ram_ptr + offset, mtod(m, u_char *) + 2, len);
708 /* mark buffer as invalid by source id 0 */
709 PUTMEM(buffer << 9, 0);
712 if (--sc->sc_rx_fillcount == 2 - 1) {
714 /* was off, restart it on buffer just emptied */
715 sc->sc_rx_act = buffer;
716 sc->sc_intmask |= CM_RI;
718 /* this also clears the RI flag interupt: */
719 PUTREG(CMCMD, CM_RXBC(buffer));
720 PUTREG(CMSTAT, sc->sc_intmask);
723 printf("%s%d: srint: restarted rx on buf %d\n",
724 ifp->if_name, ifp->if_unit, buffer);
742 ifp = &(sc->sc_arccom.ac_if);
743 buffer = sc->sc_tx_act;
747 * Normal situtations first for fast path:
748 * If acknowledgement received ok or broadcast, we're ok.
752 if (isr & CM_TMA || sc->sc_broadcast[buffer])
753 sc->sc_arccom.ac_if.if_opackets++;
755 else if (ifp->if_flags & IFF_LINK2 && ifp->if_timer > 0
756 && --sc->sc_retransmits[buffer] > 0) {
757 /* retransmit same buffer */
758 PUTREG(CMCMD, CM_TX(buffer));
766 /* We know we can accept another buffer at this point. */
767 ifp->if_flags &= ~IFF_OACTIVE;
769 if (--sc->sc_tx_fillcount > 0) {
772 * start tx on other buffer.
773 * This also clears the int flag
776 sc->sc_tx_act = buffer;
780 * sc->sc_intmask |= CM_TA;
781 * PUTREG(CMSTAT, sc->sc_intmask);
783 PUTREG(CMCMD, CM_TX(buffer));
784 /* init watchdog timer */
785 ifp->if_timer = ARCTIMEOUT;
787 #if defined(CM_DEBUG) && (CM_DEBUG > 1)
788 printf("%s%d: tint: starting tx on buffer %d, status 0x%02x\n",
789 ifp->if_name, ifp->if_unit, buffer, GETREG(CMSTAT));
792 /* have to disable TX interrupt */
793 sc->sc_intmask &= ~CM_TA;
794 PUTREG(CMSTAT, sc->sc_intmask);
795 /* ... and watchdog timer */
799 printf("%s%d: tint: no more buffers to send, status 0x%02x\n",
800 ifp->if_name, ifp->if_unit, GETREG(CMSTAT));
806 /* schedule soft int to fill a new buffer for us */
807 softintr_schedule(sc->sc_txcookie);
809 /* call it directly */
815 * Our interrupt routine
821 struct cm_softc *sc = arg;
822 struct ifnet *ifp = &sc->sc_arccom.ac_if;
824 u_char isr, maskedisr;
828 isr = GETREG(CMSTAT);
829 maskedisr = isr & sc->sc_intmask;
834 #if defined(CM_DEBUG) && (CM_DEBUG > 1)
835 printf("%s%d: intr: status 0x%02x, intmask 0x%02x\n",
836 ifp->if_name, ifp->if_unit, isr, sc->sc_intmask);
839 if (maskedisr & CM_POR) {
841 * XXX We should never see this. Don't bother to store
843 * sc->sc_arccom.ac_anaddr = GETMEM(CMMACOFF);
845 PUTREG(CMCMD, CM_CLR(CLR_POR));
847 "%s%d: intr: got spurious power on reset int\n",
848 ifp->if_name, ifp->if_unit);
851 if (maskedisr & CM_RECON) {
854 * PUTREG(CMCMD, CM_CONF(CONF_LONG));
856 PUTREG(CMCMD, CM_CLR(CLR_RECONFIG));
857 sc->sc_arccom.ac_if.if_collisions++;
860 * If less than 2 seconds per reconfig:
861 * If ARC_EXCESSIVE_RECONFIGS
862 * since last burst, complain and set treshold for
863 * warnings to ARC_EXCESSIVE_RECONS_REWARN.
865 * This allows for, e.g., new stations on the cable, or
866 * cable switching as long as it is over after
867 * (normally) 16 seconds.
869 * XXX TODO: check timeout bits in status word and
870 * double time if necessary.
873 callout_stop(&sc->sc_recon_ch);
874 newsec = time_second;
875 if ((newsec - sc->sc_recontime <= 2) &&
876 (++sc->sc_reconcount == ARC_EXCESSIVE_RECONS)) {
878 "%s%d: excessive token losses, "
880 ifp->if_name, ifp->if_unit);
882 sc->sc_recontime = newsec;
883 callout_reset(&sc->sc_recon_ch, 15 * hz,
884 cm_reconwatch, (void *)sc);
887 if (maskedisr & CM_RI) {
888 #if defined(CM_DEBUG) && (CM_DEBUG > 1)
889 printf("%s%d: intr: hard rint, act %d\n",
890 ifp->if_name, ifp->if_unit, sc->sc_rx_act);
893 buffer = sc->sc_rx_act;
894 /* look if buffer is marked invalid: */
895 if (GETMEM(buffer * 512) == 0) {
897 * invalid marked buffer (or illegally
901 "%s%d: spurious RX interupt or sender 0 "
902 " (ignored)\n", ifp->if_name, ifp->if_unit);
904 * restart receiver on same buffer.
905 * XXX maybe better reset interface?
907 PUTREG(CMCMD, CM_RXBC(buffer));
909 if (++sc->sc_rx_fillcount > 1) {
910 sc->sc_intmask &= ~CM_RI;
911 PUTREG(CMSTAT, sc->sc_intmask);
914 sc->sc_rx_act = buffer;
917 * Start receiver on other receive
918 * buffer. This also clears the RI
921 PUTREG(CMCMD, CM_RXBC(buffer));
922 /* in RX intr, so mask is ok for RX */
925 printf("%s%d: strt rx for buf %d, "
927 ifp->if_name, ifp->if_unit,
928 sc->sc_rx_act, GETREG(CMSTAT));
934 * this one starts a soft int to copy out
937 softintr_schedule(sc->sc_rxcookie);
939 /* this one does the copy here */
944 if (maskedisr & CM_TA) {
947 isr = GETREG(CMSTAT);
948 maskedisr = isr & sc->sc_intmask;
950 #if defined(CM_DEBUG) && (CM_DEBUG > 1)
951 printf("%s%d: intr (exit): status 0x%02x, intmask 0x%02x\n",
952 ifp->if_name, ifp->if_unit, isr, sc->sc_intmask);
960 struct cm_softc *sc = arg;
961 struct ifnet *ifp = &sc->sc_arccom.ac_if;
963 if (sc->sc_reconcount >= ARC_EXCESSIVE_RECONS) {
964 sc->sc_reconcount = 0;
965 log(LOG_WARNING, "%s%d: token valid again.\n",
966 ifp->if_name, ifp->if_unit);
968 sc->sc_reconcount = 0;
973 * Process an ioctl request.
974 * This code needs some work - it looks pretty ugly.
977 cm_ioctl(ifp, command, data)
989 ifa = (struct ifaddr *)data;
990 ifr = (struct ifreq *)data;
993 #if defined(CM_DEBUG) && (CM_DEBUG > 2)
994 printf("%s%d: ioctl() called, cmd = 0x%lx\n",
995 ifp->if_name, ifp->if_unit, command);
1004 error = arc_ioctl(ifp, command, data);
1008 if ((ifp->if_flags & IFF_UP) == 0 &&
1009 (ifp->if_flags & IFF_RUNNING) != 0) {
1011 * If interface is marked down and it is running,
1015 ifp->if_flags &= ~IFF_RUNNING;
1016 } else if ((ifp->if_flags & IFF_UP) != 0 &&
1017 (ifp->if_flags & IFF_RUNNING) == 0) {
1019 * If interface is marked up and it is stopped, then
1036 * watchdog routine for transmitter.
1038 * We need this, because else a receiver whose hardware is alive, but whose
1039 * software has not enabled the Receiver, would make our hardware wait forever
1040 * Discovered this after 20 times reading the docs.
1042 * Only thing we do is disable transmitter. We'll get an transmit timeout,
1043 * and the int handler will have to decide not to retransmit (in case
1044 * retransmission is implemented).
1046 * This one assumes being called inside splimp()
1053 struct cm_softc *sc = ifp->if_softc;
1055 PUTREG(CMCMD, CM_TXDIS);