diff options
Diffstat (limited to 'sys/dev/cm/smc90cx6.c')
| -rw-r--r-- | sys/dev/cm/smc90cx6.c | 926 |
1 files changed, 0 insertions, 926 deletions
diff --git a/sys/dev/cm/smc90cx6.c b/sys/dev/cm/smc90cx6.c deleted file mode 100644 index dd3bc401851a0..0000000000000 --- a/sys/dev/cm/smc90cx6.c +++ /dev/null @@ -1,926 +0,0 @@ -/* $NetBSD: smc90cx6.c,v 1.38 2001/07/07 15:57:53 thorpej Exp $ */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -/*- - * SPDX-License-Identifier: BSD-2-Clause-NetBSD - * - * 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. - * - * 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 - */ - -/* #define CMSOFTCOPY */ -#define CMRETRANSMIT /**/ -/* #define CM_DEBUG */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/sockio.h> -#include <sys/mbuf.h> -#include <sys/module.h> -#include <sys/kernel.h> -#include <sys/socket.h> -#include <sys/syslog.h> -#include <sys/bus.h> - -#include <machine/bus.h> -#include <sys/rman.h> -#include <machine/resource.h> - -#include <net/if.h> -#include <net/if_var.h> -#include <net/if_dl.h> -#include <net/if_types.h> -#include <net/if_arc.h> - -#include <dev/cm/smc90cx6reg.h> -#include <dev/cm/smc90cx6var.h> - -MODULE_DEPEND(if_cm, arcnet, 1, 1, 1); - -/* 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) - -devclass_t cm_devclass; - -/* - * 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: - * - * cm_start checks tx_fillcount - * case 2: return - * - * else fill tx_act ^ 1 && inc tx_fillcount - * - * check tx_fillcount again. - * case 2: set IFF_DRV_OACTIVE to stop arc_output from filling us. - * case 1: start tx - * - * tint clears IFF_OACTIVE, decrements and checks tx_fillcount - * case 1: start tx on tx_act ^ 1, softcall cm_start - * case 0: softcall cm_start - * - * #define fill(i) get mbuf && copy mbuf to chip(i) - */ - -void cm_init(void *); -static void cm_init_locked(struct cm_softc *); -static void cm_reset_locked(struct cm_softc *); -void cm_start(struct ifnet *); -void cm_start_locked(struct ifnet *); -int cm_ioctl(struct ifnet *, unsigned long, caddr_t); -void cm_watchdog(void *); -void cm_srint_locked(void *vsc); -static void cm_tint_locked(struct cm_softc *, int); -void cm_reconwatch_locked(void *); - -/* - * Release all resources - */ -void -cm_release_resources(dev) - device_t dev; -{ - struct cm_softc *sc = device_get_softc(dev); - - if (sc->port_res != NULL) { - bus_release_resource(dev, SYS_RES_IOPORT, - 0, sc->port_res); - sc->port_res = NULL; - } - if (sc->mem_res != NULL) { - bus_release_resource(dev, SYS_RES_MEMORY, - 0, sc->mem_res); - sc->mem_res = NULL; - } - if (sc->irq_res != NULL) { - bus_release_resource(dev, SYS_RES_IRQ, - 0, sc->irq_res); - sc->irq_res = NULL; - } -} - -int -cm_attach(dev) - device_t dev; -{ - struct cm_softc *sc = device_get_softc(dev); - struct ifnet *ifp; - u_int8_t linkaddress; - - ifp = sc->sc_ifp = if_alloc(IFT_ARCNET); - if (ifp == NULL) - return (ENOSPC); - - /* - * read the arcnet address from the board - */ - GETREG(CMRESET); - do { - DELAY(200); - } while (!(GETREG(CMSTAT) & CM_POR)); - linkaddress = GETMEM(CMMACOFF); - - /* clear the int mask... */ - sc->sc_intmask = 0; - PUTREG(CMSTAT, 0); - - PUTREG(CMCMD, CM_CONF(CONF_LONG)); - PUTREG(CMCMD, CM_CLR(CLR_POR|CLR_RECONFIG)); - sc->sc_recontime = sc->sc_reconcount = 0; - - /* - * set interface to stopped condition (reset) - */ - cm_stop_locked(sc); - - ifp->if_softc = sc; - if_initname(ifp, device_get_name(dev), device_get_unit(dev)); - ifp->if_output = arc_output; - ifp->if_start = cm_start; - ifp->if_ioctl = cm_ioctl; - ifp->if_init = cm_init; - /* XXX IFQ_SET_READY(&ifp->if_snd); */ - ifp->if_snd.ifq_maxlen = ifqmaxlen; - ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; - - arc_ifattach(ifp, linkaddress); - -#ifdef CMSOFTCOPY - sc->sc_rxcookie = softintr_establish(IPL_SOFTNET, cm_srint, sc); - sc->sc_txcookie = softintr_establish(IPL_SOFTNET, - (void (*)(void *))cm_start, ifp); -#endif - - callout_init_mtx(&sc->sc_recon_ch, &sc->sc_mtx, 0); - callout_init_mtx(&sc->sc_watchdog_timer, &sc->sc_mtx, 0); - - if_printf(ifp, "link addr 0x%02x (%d)\n", linkaddress, linkaddress); - return 0; -} - -/* - * Initialize device - * - */ -void -cm_init(xsc) - void *xsc; -{ - struct cm_softc *sc = (struct cm_softc *)xsc; - - CM_LOCK(sc); - cm_init_locked(sc); - CM_UNLOCK(sc); -} - -static void -cm_init_locked(struct cm_softc *sc) -{ - struct ifnet *ifp = sc->sc_ifp; - - if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { - ifp->if_drv_flags |= IFF_DRV_RUNNING; - cm_reset_locked(sc); - } -} - -/* - * Reset the interface... - * - * Assumes that it is called with sc_mtx held - */ -void -cm_reset_locked(sc) - struct cm_softc *sc; -{ - struct ifnet *ifp; - int linkaddress; - - ifp = sc->sc_ifp; - -#ifdef CM_DEBUG - if_printf(ifp, "reset\n"); -#endif - /* stop and restart hardware */ - - GETREG(CMRESET); - do { - DELAY(200); - } while (!(GETREG(CMSTAT) & CM_POR)); - - linkaddress = GETMEM(CMMACOFF); - -#if defined(CM_DEBUG) && (CM_DEBUG > 2) - if_printf(ifp, "reset: card reset, link addr = 0x%02x (%d)\n", - linkaddress, linkaddress); -#endif - - /* tell the routing level about the (possibly changed) link address */ - arc_storelladdr(ifp, linkaddress); - arc_frag_init(ifp); - - /* POR is NMI, but we need it below: */ - sc->sc_intmask = CM_RECON|CM_POR; - PUTREG(CMSTAT, sc->sc_intmask); - PUTREG(CMCMD, CM_CONF(CONF_LONG)); - -#ifdef CM_DEBUG - if_printf(ifp, "reset: chip configured, status=0x%02x\n", - GETREG(CMSTAT)); -#endif - PUTREG(CMCMD, CM_CLR(CLR_POR|CLR_RECONFIG)); - -#ifdef CM_DEBUG - if_printf(ifp, "reset: bits cleared, status=0x%02x\n", - GETREG(CMSTAT)); -#endif - - sc->sc_reconcount_excessive = ARC_EXCESSIVE_RECONS; - - /* start receiver */ - - sc->sc_intmask |= CM_RI; - sc->sc_rx_fillcount = 0; - sc->sc_rx_act = 2; - - PUTREG(CMCMD, CM_RXBC(2)); - PUTREG(CMSTAT, sc->sc_intmask); - -#ifdef CM_DEBUG - if_printf(ifp, "reset: started receiver, status=0x%02x\n", - GETREG(CMSTAT)); -#endif - - /* and init transmitter status */ - sc->sc_tx_act = 0; - sc->sc_tx_fillcount = 0; - - ifp->if_drv_flags |= IFF_DRV_RUNNING; - ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; - - callout_reset(&sc->sc_watchdog_timer, hz, cm_watchdog, sc); - cm_start_locked(ifp); -} - -/* - * Take interface offline - */ -void -cm_stop_locked(sc) - struct cm_softc *sc; -{ - /* Stop the interrupts */ - PUTREG(CMSTAT, 0); - - /* Stop the interface */ - GETREG(CMRESET); - - /* Stop watchdog timer */ - callout_stop(&sc->sc_watchdog_timer); - sc->sc_timer = 0; -} - -void -cm_start(struct ifnet *ifp) -{ - struct cm_softc *sc = ifp->if_softc; - - CM_LOCK(sc); - cm_start_locked(ifp); - CM_UNLOCK(sc); -} - -/* - * Start output on interface. Get another datagram to send - * off the interface queue, and copy it to the - * interface becore starting the output - * - * Assumes that sc_mtx is held - */ -void -cm_start_locked(ifp) - struct ifnet *ifp; -{ - struct cm_softc *sc = ifp->if_softc; - struct mbuf *m, *mp; - - int cm_ram_ptr; - int len, tlen, offset, buffer; -#ifdef CMTIMINGS - u_long copystart, lencopy, perbyte; -#endif - -#if defined(CM_DEBUG) && (CM_DEBUG > 3) - if_printf(ifp, "start(%p)\n", ifp); -#endif - - if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) - return; - - if (sc->sc_tx_fillcount >= 2) - return; - - m = arc_frag_next(ifp); - buffer = sc->sc_tx_act ^ 1; - - if (m == NULL) - return; - -#ifdef CM_DEBUG - if (m->m_len < ARC_HDRLEN) - m = m_pullup(m, ARC_HDRLEN);/* gcc does structure padding */ - if_printf(ifp, "start: filling %d from %d to %d type %d\n", - 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 - cm_ram_ptr = buffer * 512; - - if (m == NULL) - 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(cm_ram_ptr + 0, mtod(m, u_char *)[0]); - */ - - PUTMEM(cm_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(cm_ram_ptr + 2, offset); - } else { - PUTMEM(cm_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(cm_ram_ptr + 3, offset); - - } - cm_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( - rman_get_bustag(sc->mem_res), - rman_get_bushandle(sc->mem_res), - cm_ram_ptr, mtod(mp, caddr_t), len); - - cm_ram_ptr += len; - } - } - - sc->sc_broadcast[buffer] = (m->m_flags & M_BCAST) != 0; - sc->sc_retransmits[buffer] = (m->m_flags & M_BCAST) ? 1 : 5; - - if (++sc->sc_tx_fillcount > 1) { - /* - * We are filled up to the rim. No more bufs for the moment, - * please. - */ - ifp->if_drv_flags |= IFF_DRV_OACTIVE; - } else { -#ifdef CM_DEBUG - if_printf(ifp, "start: starting transmitter on buffer %d\n", - buffer); -#endif - /* Transmitter was off, start it */ - sc->sc_tx_act = buffer; - - /* - * We still can accept another buf, so don't: - * ifp->if_drv_flags |= IFF_DRV_OACTIVE; - */ - sc->sc_intmask |= CM_TA; - PUTREG(CMCMD, CM_TX(buffer)); - PUTREG(CMSTAT, sc->sc_intmask); - - sc->sc_timer = ARCTIMEOUT; - } - 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. - */ -} - -#ifdef CMSOFTCOPY -void -cm_srint(void *vsc) -{ - struct cm_softc *sc = (struct cm_softc *)vsc; - - CM_LOCK(sc); - cm_srint_locked(vsc); - CM_UNLOCK(sc); -} -#endif - -/* - * Arcnet interface receiver soft interrupt: - * get the stuff out of any filled buffer we find. - */ -void -cm_srint_locked(vsc) - void *vsc; -{ - struct cm_softc *sc = (struct cm_softc *)vsc; - int buffer, len, offset, type; - int cm_ram_ptr; - struct mbuf *m; - struct arc_header *ah; - struct ifnet *ifp; - - ifp = sc->sc_ifp; - - buffer = sc->sc_rx_act ^ 1; - - /* Allocate header mbuf */ - MGETHDR(m, M_NOWAIT, MT_DATA); - - if (m == NULL) { - /* - * 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) - */ - if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); - 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) - CM_HDRNEWLEN)), packet type dependent. - */ - - cm_ram_ptr = buffer * 512; - offset = GETMEM(cm_ram_ptr + 2); - if (offset) - len = 256 - offset; - else { - offset = GETMEM(cm_ram_ptr + 3); - len = 512 - offset; - } - - /* - * first +2 bytes for align fixup below - * second +2 bytes are for src/dst addresses - */ - if ((len + 2 + 2) > MHLEN) { - /* attach an mbuf cluster */ - if (!(MCLGET(m, M_NOWAIT))) { - if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); - goto cleanup; - } - } - - if (m == NULL) { - if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); - goto cleanup; - } - - type = GETMEM(cm_ram_ptr + offset); - m->m_data += 1 + arc_isphds(type); - /* mbuf filled with ARCnet addresses */ - m->m_pkthdr.len = m->m_len = len + 2; - - ah = mtod(m, struct arc_header *); - ah->arc_shost = GETMEM(cm_ram_ptr + 0); - ah->arc_dhost = GETMEM(cm_ram_ptr + 1); - - bus_space_read_region_1( - rman_get_bustag(sc->mem_res), rman_get_bushandle(sc->mem_res), - cm_ram_ptr + offset, mtod(m, u_char *) + 2, len); - - CM_UNLOCK(sc); - arc_input(ifp, m); - CM_LOCK(sc); - - m = NULL; - if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); - -cleanup: - - if (m != NULL) - m_freem(m); - - /* mark buffer as invalid by source id 0 */ - PUTMEM(buffer << 9, 0); - if (--sc->sc_rx_fillcount == 2 - 1) { - - /* was off, restart it on buffer just emptied */ - sc->sc_rx_act = buffer; - sc->sc_intmask |= CM_RI; - - /* this also clears the RI flag interrupt: */ - PUTREG(CMCMD, CM_RXBC(buffer)); - PUTREG(CMSTAT, sc->sc_intmask); - -#ifdef CM_DEBUG - if_printf(ifp, "srint: restarted rx on buf %d\n", buffer); -#endif - } -} - -static inline void -cm_tint_locked(sc, isr) - struct cm_softc *sc; - int isr; -{ - struct ifnet *ifp; - - int buffer; -#ifdef CMTIMINGS - int clknow; -#endif - - ifp = sc->sc_ifp; - buffer = sc->sc_tx_act; - - /* - * retransmit code: - * Normal situtations first for fast path: - * If acknowledgement received ok or broadcast, we're ok. - * else if - */ - - if (isr & CM_TMA || sc->sc_broadcast[buffer]) - if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); -#ifdef CMRETRANSMIT - else if (ifp->if_flags & IFF_LINK2 && sc->sc_timer > 0 - && --sc->sc_retransmits[buffer] > 0) { - /* retransmit same buffer */ - PUTREG(CMCMD, CM_TX(buffer)); - return; - } -#endif - else - if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); - - - /* We know we can accept another buffer at this point. */ - ifp->if_drv_flags &= ~IFF_DRV_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 |= CM_TA; - * PUTREG(CMSTAT, sc->sc_intmask); - */ - PUTREG(CMCMD, CM_TX(buffer)); - /* init watchdog timer */ - sc->sc_timer = ARCTIMEOUT; - -#if defined(CM_DEBUG) && (CM_DEBUG > 1) - if_printf(ifp, - "tint: starting tx on buffer %d, status 0x%02x\n", - buffer, GETREG(CMSTAT)); -#endif - } else { - /* have to disable TX interrupt */ - sc->sc_intmask &= ~CM_TA; - PUTREG(CMSTAT, sc->sc_intmask); - /* ... and watchdog timer */ - sc->sc_timer = 0; - -#ifdef CM_DEBUG - if_printf(ifp, "tint: no more buffers to send, status 0x%02x\n", - GETREG(CMSTAT)); -#endif - } - - /* XXXX TODO */ -#ifdef CMSOFTCOPY - /* schedule soft int to fill a new buffer for us */ - softintr_schedule(sc->sc_txcookie); -#else - /* call it directly */ - cm_start_locked(ifp); -#endif -} - -/* - * Our interrupt routine - */ -void -cmintr(arg) - void *arg; -{ - struct cm_softc *sc = arg; - struct ifnet *ifp = sc->sc_ifp; - - u_char isr, maskedisr; - int buffer; - u_long newsec; - - CM_LOCK(sc); - - isr = GETREG(CMSTAT); - maskedisr = isr & sc->sc_intmask; - if (!maskedisr || (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { - CM_UNLOCK(sc); - return; - } - - do { - -#if defined(CM_DEBUG) && (CM_DEBUG > 1) - if_printf(ifp, "intr: status 0x%02x, intmask 0x%02x\n", - isr, sc->sc_intmask); -#endif - - if (maskedisr & CM_POR) { - /* - * XXX We should never see this. Don't bother to store - * the address. - * sc->sc_ifp->if_l2com->ac_anaddr = GETMEM(CMMACOFF); - */ - PUTREG(CMCMD, CM_CLR(CLR_POR)); - log(LOG_WARNING, - "%s: intr: got spurious power on reset int\n", - ifp->if_xname); - } - - if (maskedisr & CM_RECON) { - /* - * we dont need to: - * PUTREG(CMCMD, CM_CONF(CONF_LONG)); - */ - PUTREG(CMCMD, CM_CLR(CLR_RECONFIG)); - if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1); - - /* - * If less than 2 seconds per reconfig: - * If ARC_EXCESSIVE_RECONFIGS - * since last burst, complain and set treshold 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_second; - if ((newsec - sc->sc_recontime <= 2) && - (++sc->sc_reconcount == ARC_EXCESSIVE_RECONS)) { - log(LOG_WARNING, - "%s: excessive token losses, " - "cable problem?\n", - ifp->if_xname); - } - sc->sc_recontime = newsec; - callout_reset(&sc->sc_recon_ch, 15 * hz, - cm_reconwatch_locked, (void *)sc); - } - - if (maskedisr & CM_RI) { -#if defined(CM_DEBUG) && (CM_DEBUG > 1) - if_printf(ifp, "intr: hard rint, act %d\n", - 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", ifp->if_xname); - /* - * restart receiver on same buffer. - * XXX maybe better reset interface? - */ - PUTREG(CMCMD, CM_RXBC(buffer)); - } else { - if (++sc->sc_rx_fillcount > 1) { - sc->sc_intmask &= ~CM_RI; - PUTREG(CMSTAT, 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(CMCMD, CM_RXBC(buffer)); - /* in RX intr, so mask is ok for RX */ - -#ifdef CM_DEBUG - if_printf(ifp, "strt rx for buf %d, " - "stat 0x%02x\n", - sc->sc_rx_act, GETREG(CMSTAT)); -#endif - } - -#ifdef CMSOFTCOPY - /* - * this one starts a soft int to copy out - * of the hw - */ - softintr_schedule(sc->sc_rxcookie); -#else - /* this one does the copy here */ - cm_srint_locked(sc); -#endif - } - } - if (maskedisr & CM_TA) { - cm_tint_locked(sc, isr); - } - isr = GETREG(CMSTAT); - maskedisr = isr & sc->sc_intmask; - } while (maskedisr); -#if defined(CM_DEBUG) && (CM_DEBUG > 1) - if_printf(ifp, "intr (exit): status 0x%02x, intmask 0x%02x\n", - isr, sc->sc_intmask); -#endif - CM_UNLOCK(sc); -} - -void -cm_reconwatch_locked(arg) - void *arg; -{ - struct cm_softc *sc = arg; - struct ifnet *ifp = sc->sc_ifp; - - if (sc->sc_reconcount >= ARC_EXCESSIVE_RECONS) { - sc->sc_reconcount = 0; - log(LOG_WARNING, "%s: token valid again.\n", - ifp->if_xname); - } - sc->sc_reconcount = 0; -} - - -/* - * Process an ioctl request. - * This code needs some work - it looks pretty ugly. - */ -int -cm_ioctl(ifp, command, data) - struct ifnet *ifp; - u_long command; - caddr_t data; -{ - struct cm_softc *sc; - int error; - - error = 0; - sc = ifp->if_softc; - -#if defined(CM_DEBUG) && (CM_DEBUG > 2) - if_printf(ifp, "ioctl() called, cmd = 0x%lx\n", command); -#endif - - switch (command) { - case SIOCSIFADDR: - case SIOCGIFADDR: - case SIOCADDMULTI: - case SIOCDELMULTI: - case SIOCSIFMTU: - error = arc_ioctl(ifp, command, data); - break; - - case SIOCSIFFLAGS: - CM_LOCK(sc); - if ((ifp->if_flags & IFF_UP) == 0 && - (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { - /* - * If interface is marked down and it is running, - * then stop it. - */ - cm_stop_locked(sc); - ifp->if_drv_flags &= ~IFF_DRV_RUNNING; - } else if ((ifp->if_flags & IFF_UP) != 0 && - (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { - /* - * If interface is marked up and it is stopped, then - * start it. - */ - cm_init_locked(sc); - } - CM_UNLOCK(sc); - break; - - default: - error = EINVAL; - break; - } - - 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 a transmit timeout, - * and the int handler will have to decide not to retransmit (in case - * retransmission is implemented). - */ -void -cm_watchdog(void *arg) -{ - struct cm_softc *sc; - - sc = arg; - callout_reset(&sc->sc_watchdog_timer, hz, cm_watchdog, sc); - if (sc->sc_timer == 0 || --sc->sc_timer > 0) - return; - PUTREG(CMCMD, CM_TXDIS); -} |