/* $NetBSD: smc90cx6.c,v 1.47 2007/03/04 06:02:02 christos Exp $ */ /*- * Copyright (c) 1994, 1995, 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Ignatios Souvatzis. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Chip core driver for the SMC90c26 / SMC90c56 (and SMC90c66 in '56 * compatibility mode) boards */ #include __KERNEL_RCSID(0, "$NetBSD: smc90cx6.c,v 1.47 2007/03/04 06:02:02 christos Exp $"); /* #define BAHSOFTCOPY */ #define BAHRETRANSMIT /**/ #include "opt_inet.h" #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #include #include #include #endif #if NBPFILTER > 0 #include #include #endif #include #include #include #include #include #include #include /* these should be elsewhere */ #define ARC_MIN_LEN 1 #define ARC_MIN_FORBID_LEN 254 #define ARC_MAX_FORBID_LEN 256 #define ARC_MAX_LEN 508 #define ARC_ADDR_LEN 1 /* for watchdog timer. This should be more than enough. */ #define ARCTIMEOUT (5*IFNET_SLOWHZ) /* * This currently uses 2 bufs for tx, 2 for rx * * New rx protocol: * * rx has a fillcount variable. If fillcount > (NRXBUF-1), * rx can be switched off from rx hard int. * Else rx is restarted on the other receiver. * rx soft int counts down. if it is == (NRXBUF-1), it restarts * the receiver. * To ensure packet ordering (we need that for 1201 later), we have a counter * which is incremented modulo 256 on each receive and a per buffer * variable, which is set to the counter on filling. The soft int can * compare both values to determine the older packet. * * Transmit direction: * * bah_start checks tx_fillcount * case 2: return * * else fill tx_act ^ 1 && inc tx_fillcount * * check tx_fillcount again. * case 2: set IFF_OACTIVE to stop arc_output from filling us. * case 1: start tx * * tint clears IFF_OCATIVE, decrements and checks tx_fillcount * case 1: start tx on tx_act ^ 1, softcall bah_start * case 0: softcall bah_start * * #define fill(i) get mbuf && copy mbuf to chip(i) */ void bah_init(struct bah_softc *); void bah_reset(struct bah_softc *); void bah_stop(struct bah_softc *); void bah_start(struct ifnet *); int bahintr(void *); int bah_ioctl(struct ifnet *, unsigned long, void *); void bah_watchdog(struct ifnet *); void bah_srint(void *vsc); static void bah_tint(struct bah_softc *, int); void bah_reconwatch(void *); /* short notation */ #define GETREG(off) bus_space_read_1(bst_r, regs, (off)) #define PUTREG(off, v) bus_space_write_1(bst_r, regs, (off), (v)) #define GETMEM(off) bus_space_read_1(bst_m, mem, (off)) #define PUTMEM(off, v) bus_space_write_1(bst_m, mem, (off), (v)) void bah_attach_subr(sc) struct bah_softc *sc; { struct ifnet *ifp = &sc->sc_arccom.ac_if; int s; u_int8_t linkaddress; bus_space_tag_t bst_r = sc->sc_bst_r; bus_space_tag_t bst_m = sc->sc_bst_m; bus_space_handle_t regs = sc->sc_regs; bus_space_handle_t mem = sc->sc_mem; #if (defined(BAH_DEBUG) && (BAH_DEBUG > 2)) printf("\n%s: attach(0x%x, 0x%x, 0x%x)\n", sc->sc_dev.dv_xname, parent, self, aux); #endif s = splhigh(); /* * read the arcnet address from the board */ (*sc->sc_reset)(sc, 1); do { delay(200); } while (!(GETREG(BAHSTAT) & BAH_POR)); linkaddress = GETMEM(BAHMACOFF); printf(": link addr 0x%02x(%d)\n", linkaddress, linkaddress); /* clear the int mask... */ sc->sc_intmask = 0; PUTREG(BAHSTAT, 0); PUTREG(BAHCMD, BAH_CONF(CONF_LONG)); PUTREG(BAHCMD, BAH_CLR(CLR_POR|CLR_RECONFIG)); sc->sc_recontime = sc->sc_reconcount = 0; /* and reenable kernel int level */ splx(s); /* * set interface to stopped condition (reset) */ bah_stop(sc); strcpy(ifp->if_xname, sc->sc_dev.dv_xname); ifp->if_softc = sc; ifp->if_start = bah_start; ifp->if_ioctl = bah_ioctl; ifp->if_timer = 0; ifp->if_watchdog = bah_watchdog; IFQ_SET_READY(&ifp->if_snd); ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; ifp->if_mtu = ARCMTU; arc_ifattach(ifp, linkaddress); #ifdef BAHSOFTCOPY sc->sc_rxcookie = softintr_establish(IPL_SOFTNET, bah_srint, sc); sc->sc_txcookie = softintr_establish(IPL_SOFTNET, (void (*)(void *))bah_start, ifp); #endif callout_init(&sc->sc_recon_ch); } /* * Initialize device * */ void bah_init(sc) struct bah_softc *sc; { struct ifnet *ifp; int s; ifp = &sc->sc_arccom.ac_if; if ((ifp->if_flags & IFF_RUNNING) == 0) { s = splnet(); ifp->if_flags |= IFF_RUNNING; bah_reset(sc); bah_start(ifp); splx(s); } } /* * Reset the interface... * * this assumes that it is called inside a critical section... * */ void bah_reset(sc) struct bah_softc *sc; { struct ifnet *ifp; int linkaddress; bus_space_tag_t bst_r = sc->sc_bst_r; bus_space_tag_t bst_m = sc->sc_bst_m; bus_space_handle_t regs = sc->sc_regs; bus_space_handle_t mem = sc->sc_mem; ifp = &sc->sc_arccom.ac_if; #ifdef BAH_DEBUG printf("%s: reset\n", sc->sc_dev.dv_xname); #endif /* stop and restart hardware */ (*sc->sc_reset)(sc, 1); do { DELAY(200); } while (!(GETREG(BAHSTAT) & BAH_POR)); linkaddress = GETMEM(BAHMACOFF); #if defined(BAH_DEBUG) && (BAH_DEBUG > 2) printf("%s: reset: card reset, link addr = 0x%02x (%ld)\n", sc->sc_dev.dv_xname, linkaddress, linkaddress); #endif /* tell the routing level about the (possibly changed) link address */ arc_storelladdr(ifp, linkaddress); /* POR is NMI, but we need it below: */ sc->sc_intmask = BAH_RECON|BAH_POR; PUTREG(BAHSTAT, sc->sc_intmask); PUTREG(BAHCMD, BAH_CONF(CONF_LONG)); #ifdef BAH_DEBUG printf("%s: reset: chip configured, status=0x%02x\n", sc->sc_dev.dv_xname, GETREG(BAHSTAT)); #endif PUTREG(BAHCMD, BAH_CLR(CLR_POR|CLR_RECONFIG)); #ifdef BAH_DEBUG printf("%s: reset: bits cleared, status=0x%02x\n", sc->sc_dev.dv_xname, GETREG(BAHSTAT); #endif sc->sc_reconcount_excessive = ARC_EXCESSIVE_RECONS; /* start receiver */ sc->sc_intmask |= BAH_RI; sc->sc_rx_fillcount = 0; sc->sc_rx_act = 2; PUTREG(BAHCMD, BAH_RXBC(2)); PUTREG(BAHSTAT, sc->sc_intmask); #ifdef BAH_DEBUG printf("%s: reset: started receiver, status=0x%02x\n", sc->sc_dev.dv_xname, GETREG(BAHSTAT); #endif /* and init transmitter status */ sc->sc_tx_act = 0; sc->sc_tx_fillcount = 0; ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; bah_start(ifp); } /* * Take interface offline */ void bah_stop(sc) struct bah_softc *sc; { bus_space_tag_t bst_r = sc->sc_bst_r; bus_space_handle_t regs = sc->sc_regs; /* Stop the interrupts */ PUTREG(BAHSTAT, 0); /* Stop the interface */ (*sc->sc_reset)(sc, 0); /* Stop watchdog timer */ sc->sc_arccom.ac_if.if_timer = 0; } /* * Start output on interface. Get another datagram to send * off the interface queue, and copy it to the * interface before starting the output * * this assumes that it is called inside a critical section... * XXX hm... does it still? * */ void bah_start(ifp) struct ifnet *ifp; { struct bah_softc *sc = ifp->if_softc; struct mbuf *m,*mp; bus_space_tag_t bst_r = sc->sc_bst_r; bus_space_handle_t regs = sc->sc_regs; bus_space_tag_t bst_m = sc->sc_bst_m; bus_space_handle_t mem = sc->sc_mem; int bah_ram_ptr; int len, tlen, offset, s, buffer; #ifdef BAHTIMINGS u_long copystart, lencopy, perbyte; #endif #if defined(BAH_DEBUG) && (BAH_DEBUG > 3) printf("%s: start(0x%x)\n", sc->sc_dev.dv_xname, ifp); #endif if ((ifp->if_flags & IFF_RUNNING) == 0) return; s = splnet(); if (sc->sc_tx_fillcount >= 2) { splx(s); return; } IFQ_DEQUEUE(&ifp->if_snd, m); buffer = sc->sc_tx_act ^ 1; splx(s); if (m == 0) return; #if NBPFILTER > 0 /* * If bpf is listening on this interface, let it * see the packet before we commit it to the wire * * (can't give the copy in A2060 card RAM to bpf, because * that RAM is just accessed as on every other byte) */ if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, m); #endif #ifdef BAH_DEBUG if (m->m_len < ARC_HDRLEN) m = m_pullup(m, ARC_HDRLEN);/* gcc does structure padding */ printf("%s: start: filling %ld from %ld to %ld type %ld\n", sc->sc_dev.dv_xname, buffer, mtod(m, u_char *)[0], mtod(m, u_char *)[1], mtod(m, u_char *)[2]); #else if (m->m_len < 2) m = m_pullup(m, 2); #endif bah_ram_ptr = buffer*512; if (m == 0) return; /* write the addresses to RAM and throw them away */ /* * Hardware does this: Yet Another Microsecond Saved. * (btw, timing code says usually 2 microseconds) * PUTMEM(bah_ram_ptr + 0, mtod(m, u_char *)[0]); */ PUTMEM(bah_ram_ptr + 1, mtod(m, u_char *)[1]); m_adj(m, 2); /* get total length left at this point */ tlen = m->m_pkthdr.len; if (tlen < ARC_MIN_FORBID_LEN) { offset = 256 - tlen; PUTMEM(bah_ram_ptr + 2, offset); } else { PUTMEM(bah_ram_ptr + 2, 0); if (tlen <= ARC_MAX_FORBID_LEN) offset = 255; /* !!! */ else { if (tlen > ARC_MAX_LEN) tlen = ARC_MAX_LEN; offset = 512 - tlen; } PUTMEM(bah_ram_ptr + 3, offset); } bah_ram_ptr += offset; /* lets loop through the mbuf chain */ for (mp = m; mp; mp = mp->m_next) { if ((len = mp->m_len)) { /* YAMS */ bus_space_write_region_1(bst_m, mem, bah_ram_ptr, mtod(mp, void *), len); bah_ram_ptr += len; } } sc->sc_broadcast[buffer] = (m->m_flags & M_BCAST) != 0; sc->sc_retransmits[buffer] = (m->m_flags & M_BCAST) ? 1 : 5; /* actually transmit the packet */ s = splnet(); if (++sc->sc_tx_fillcount > 1) { /* * We are filled up to the rim. No more bufs for the moment, * please. */ ifp->if_flags |= IFF_OACTIVE; } else { #ifdef BAH_DEBUG printf("%s: start: starting transmitter on buffer %d\n", sc->sc_dev.dv_xname, buffer); #endif /* Transmitter was off, start it */ sc->sc_tx_act = buffer; /* * We still can accept another buf, so don't: * ifp->if_flags |= IFF_OACTIVE; */ sc->sc_intmask |= BAH_TA; PUTREG(BAHCMD, BAH_TX(buffer)); PUTREG(BAHSTAT, sc->sc_intmask); sc->sc_arccom.ac_if.if_timer = ARCTIMEOUT; } splx(s); m_freem(m); /* * After 10 times reading the docs, I realized * that in the case the receiver NAKs the buffer request, * the hardware retries till shutdown. * This is integrated now in the code above. */ return; } /* * Arcnet interface receiver soft interrupt: * get the stuff out of any filled buffer we find. */ void bah_srint(vsc) void *vsc; { struct bah_softc *sc = (struct bah_softc *)vsc; int buffer, len, len1, amount, offset, s, type; int bah_ram_ptr; struct mbuf *m, *dst, *head; struct arc_header *ah; struct ifnet *ifp; bus_space_tag_t bst_r = sc->sc_bst_r; bus_space_tag_t bst_m = sc->sc_bst_m; bus_space_handle_t regs = sc->sc_regs; bus_space_handle_t mem = sc->sc_mem; ifp = &sc->sc_arccom.ac_if; head = 0; s = splnet(); buffer = sc->sc_rx_act ^ 1; splx(s); /* Allocate header mbuf */ MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == 0) { /* * in case s.th. goes wrong with mem, drop it * to make sure the receiver can be started again * count it as input error (we dont have any other * detectable) */ ifp->if_ierrors++; goto cleanup; } m->m_pkthdr.rcvif = ifp; /* * Align so that IP packet will be longword aligned. Here we * assume that m_data of new packet is longword aligned. * When implementing PHDS, we might have to change it to 2, * (2*sizeof(ulong) - ARC_HDRNEWLEN)), packet type dependent. */ bah_ram_ptr = buffer*512; offset = GETMEM(bah_ram_ptr + 2); if (offset) len = 256 - offset; else { offset = GETMEM(bah_ram_ptr + 3); len = 512 - offset; } if (len+2 >= MINCLSIZE) MCLGET(m, M_DONTWAIT); if (m == 0) { ifp->if_ierrors++; goto cleanup; } type = GETMEM(bah_ram_ptr + offset); m->m_data += 1 + arc_isphds(type); head = m; ah = mtod(head, struct arc_header *); ah->arc_shost = GETMEM(bah_ram_ptr + 0); ah->arc_dhost = GETMEM(bah_ram_ptr + 1); m->m_pkthdr.len = len+2; /* whole packet length */ m->m_len = 2; /* mbuf filled with ARCnet addresses */ bah_ram_ptr += offset; /* ram buffer continues there */ while (len > 0) { len1 = len; amount = M_TRAILINGSPACE(m); if (amount == 0) { dst = m; MGET(m, M_DONTWAIT, MT_DATA); if (m == 0) { ifp->if_ierrors++; goto cleanup; } if (len1 >= MINCLSIZE) MCLGET(m, M_DONTWAIT); m->m_len = 0; dst->m_next = m; amount = M_TRAILINGSPACE(m); } if (amount < len1) len1 = amount; bus_space_read_region_1(bst_m, mem, bah_ram_ptr, mtod(m, u_char *) + m->m_len, len1); m->m_len += len1; bah_ram_ptr += len1; len -= len1; } #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, head); #endif (*sc->sc_arccom.ac_if.if_input)(&sc->sc_arccom.ac_if, head); head = NULL; ifp->if_ipackets++; cleanup: if (head != NULL) m_freem(head); /* mark buffer as invalid by source id 0 */ bus_space_write_1(bst_m, mem, buffer*512, 0); s = splnet(); if (--sc->sc_rx_fillcount == 2 - 1) { /* was off, restart it on buffer just emptied */ sc->sc_rx_act = buffer; sc->sc_intmask |= BAH_RI; /* this also clears the RI flag interrupt: */ PUTREG(BAHCMD, BAH_RXBC(buffer)); PUTREG(BAHSTAT, sc->sc_intmask); #ifdef BAH_DEBUG printf("%s: srint: restarted rx on buf %ld\n", sc->sc_dev.dv_xname, buffer); #endif } splx(s); } inline static void bah_tint(sc, isr) struct bah_softc *sc; int isr; { struct ifnet *ifp; bus_space_tag_t bst_r = sc->sc_bst_r; bus_space_handle_t regs = sc->sc_regs; int buffer; #ifdef BAHTIMINGS int clknow; #endif ifp = &(sc->sc_arccom.ac_if); buffer = sc->sc_tx_act; /* * retransmit code: * Normal situations first for fast path: * If acknowledgement received ok or broadcast, we're ok. * else if */ if (isr & BAH_TMA || sc->sc_broadcast[buffer]) sc->sc_arccom.ac_if.if_opackets++; #ifdef BAHRETRANSMIT else if (ifp->if_flags & IFF_LINK2 && ifp->if_timer > 0 && --sc->sc_retransmits[buffer] > 0) { /* retransmit same buffer */ PUTREG(BAHCMD, BAH_TX(buffer)); return; } #endif else ifp->if_oerrors++; /* We know we can accept another buffer at this point. */ ifp->if_flags &= ~IFF_OACTIVE; if (--sc->sc_tx_fillcount > 0) { /* * start tx on other buffer. * This also clears the int flag */ buffer ^= 1; sc->sc_tx_act = buffer; /* * already given: * sc->sc_intmask |= BAH_TA; * PUTREG(BAHSTAT, sc->sc_intmask); */ PUTREG(BAHCMD, BAH_TX(buffer)); /* init watchdog timer */ ifp->if_timer = ARCTIMEOUT; #if defined(BAH_DEBUG) && (BAH_DEBUG > 1) printf("%s: tint: starting tx on buffer %d, status 0x%02x\n", sc->sc_dev.dv_xname, buffer, GETREG(BAHSTAT)); #endif } else { /* have to disable TX interrupt */ sc->sc_intmask &= ~BAH_TA; PUTREG(BAHSTAT, sc->sc_intmask); /* ... and watchdog timer */ ifp->if_timer = 0; #ifdef BAH_DEBUG printf("%s: tint: no more buffers to send, status 0x%02x\n", sc->sc_dev.dv_xname, GETREG(BAHSTAT)); #endif } /* XXXX TODO */ #ifdef BAHSOFTCOPY /* schedule soft int to fill a new buffer for us */ softintr_schedule(sc->sc_txcookie); #else /* call it directly */ bah_start(ifp); #endif } /* * Our interrupt routine */ int bahintr(arg) void *arg; { struct bah_softc *sc = arg; bus_space_tag_t bst_r = sc->sc_bst_r; bus_space_tag_t bst_m = sc->sc_bst_m; bus_space_handle_t regs = sc->sc_regs; bus_space_handle_t mem = sc->sc_mem; u_char isr, maskedisr; int buffer; u_long newsec; isr = GETREG(BAHSTAT); maskedisr = isr & sc->sc_intmask; if (!maskedisr) return (0); do { #if defined(BAH_DEBUG) && (BAH_DEBUG>1) printf("%s: intr: status 0x%02x, intmask 0x%02x\n", sc->sc_dev.dv_xname, isr, sc->sc_intmask); #endif if (maskedisr & BAH_POR) { /* * XXX We should never see this. Don't bother to store * the address. * sc->sc_arccom.ac_anaddr = GETMEM(BAHMACOFF); */ PUTREG(BAHCMD, BAH_CLR(CLR_POR)); log(LOG_WARNING, "%s: intr: got spurious power on reset int\n", sc->sc_dev.dv_xname); } if (maskedisr & BAH_RECON) { /* * we dont need to: * PUTREG(BAHCMD, BAH_CONF(CONF_LONG)); */ PUTREG(BAHCMD, BAH_CLR(CLR_RECONFIG)); sc->sc_arccom.ac_if.if_collisions++; /* * If less than 2 seconds per reconfig: * If ARC_EXCESSIVE_RECONFIGS * since last burst, complain and set threshold for * warnings to ARC_EXCESSIVE_RECONS_REWARN. * * This allows for, e.g., new stations on the cable, or * cable switching as long as it is over after * (normally) 16 seconds. * * XXX TODO: check timeout bits in status word and * double time if necessary. */ callout_stop(&sc->sc_recon_ch); newsec = time.tv_sec; if ((newsec - sc->sc_recontime <= 2) && (++sc->sc_reconcount == ARC_EXCESSIVE_RECONS)) { log(LOG_WARNING, "%s: excessive token losses, " "cable problem?\n", sc->sc_dev.dv_xname); } sc->sc_recontime = newsec; callout_reset(&sc->sc_recon_ch, 15 * hz, bah_reconwatch, (void *)sc); } if (maskedisr & BAH_RI) { #if defined(BAH_DEBUG) && (BAH_DEBUG > 1) printf("%s: intr: hard rint, act %ld\n", sc->sc_dev.dv_xname, sc->sc_rx_act); #endif buffer = sc->sc_rx_act; /* look if buffer is marked invalid: */ if (GETMEM(buffer*512) == 0) { /* * invalid marked buffer (or illegally * configured sender) */ log(LOG_WARNING, "%s: spurious RX interrupt or sender 0 " " (ignored)\n", sc->sc_dev.dv_xname); /* * restart receiver on same buffer. * XXX maybe better reset interface? */ PUTREG(BAHCMD, BAH_RXBC(buffer)); } else { if (++sc->sc_rx_fillcount > 1) { sc->sc_intmask &= ~BAH_RI; PUTREG(BAHSTAT, sc->sc_intmask); } else { buffer ^= 1; sc->sc_rx_act = buffer; /* * Start receiver on other receive * buffer. This also clears the RI * interrupt flag. */ PUTREG(BAHCMD, BAH_RXBC(buffer)); /* in RX intr, so mask is ok for RX */ #ifdef BAH_DEBUG printf("%s: strt rx for buf %ld, " "stat 0x%02x\n", sc->sc_dev.dv_xname, sc->sc_rx_act, GETREG(BAHSTAT); #endif } #ifdef BAHSOFTCOPY /* * this one starts a soft int to copy out * of the hw */ softintr_schedule(sc->sc_rxcookie); #else /* this one does the copy here */ bah_srint(sc); #endif } } if (maskedisr & BAH_TA) { bah_tint(sc, isr); } isr = GETREG(BAHSTAT); maskedisr = isr & sc->sc_intmask; } while (maskedisr); return (1); } void bah_reconwatch(arg) void *arg; { struct bah_softc *sc = arg; if (sc->sc_reconcount >= ARC_EXCESSIVE_RECONS) { sc->sc_reconcount = 0; log(LOG_WARNING, "%s: token valid again.\n", sc->sc_dev.dv_xname); } sc->sc_reconcount = 0; } /* * Process an ioctl request. * This code needs some work - it looks pretty ugly. */ int bah_ioctl(ifp, command, data) struct ifnet *ifp; u_long command; void *data; { struct bah_softc *sc; struct ifaddr *ifa; struct ifreq *ifr; int s, error; error = 0; sc = ifp->if_softc; ifa = (struct ifaddr *)data; ifr = (struct ifreq *)data; s = splnet(); #if defined(BAH_DEBUG) && (BAH_DEBUG > 2) printf("%s: ioctl() called, cmd = 0x%x\n", sc->sc_dev.dv_xname, command); #endif switch (command) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; switch (ifa->ifa_addr->sa_family) { #ifdef INET case AF_INET: bah_init(sc); arp_ifinit(ifp, ifa); break; #endif default: bah_init(sc); break; } case SIOCSIFFLAGS: if ((ifp->if_flags & IFF_UP) == 0 && (ifp->if_flags & IFF_RUNNING) != 0) { /* * If interface is marked down and it is running, * then stop it. */ bah_stop(sc); ifp->if_flags &= ~IFF_RUNNING; } else if ((ifp->if_flags & IFF_UP) != 0 && (ifp->if_flags & IFF_RUNNING) == 0) { /* * If interface is marked up and it is stopped, then * start it. */ bah_init(sc); } break; case SIOCADDMULTI: case SIOCDELMULTI: switch (ifr->ifr_addr.sa_family) { case AF_INET: case AF_INET6: error = 0; break; default: error = EAFNOSUPPORT; break; } break; default: error = EINVAL; } splx(s); return (error); } /* * watchdog routine for transmitter. * * We need this, because else a receiver whose hardware is alive, but whose * software has not enabled the Receiver, would make our hardware wait forever * Discovered this after 20 times reading the docs. * * Only thing we do is disable transmitter. We'll get an transmit timeout, * and the int handler will have to decide not to retransmit (in case * retransmission is implemented). * * This one assumes being called inside splnet() */ void bah_watchdog(ifp) struct ifnet *ifp; { struct bah_softc *sc = ifp->if_softc; bus_space_tag_t bst_r = sc->sc_bst_r; bus_space_handle_t regs = sc->sc_regs; PUTREG(BAHCMD, BAH_TXDIS); return; }