smc90cx6.c revision 121816
189099Sfjoe/* $NetBSD: smc90cx6.c,v 1.38 2001/07/07 15:57:53 thorpej Exp $ */ 289099Sfjoe 3119418Sobrien#include <sys/cdefs.h> 4119418Sobrien__FBSDID("$FreeBSD: head/sys/dev/cm/smc90cx6.c 121816 2003-10-31 18:32:15Z brooks $"); 5119418Sobrien 689099Sfjoe/*- 789099Sfjoe * Copyright (c) 1994, 1995, 1998 The NetBSD Foundation, Inc. 889099Sfjoe * All rights reserved. 989099Sfjoe * 1089099Sfjoe * This code is derived from software contributed to The NetBSD Foundation 1189099Sfjoe * by Ignatios Souvatzis. 1289099Sfjoe * 1389099Sfjoe * Redistribution and use in source and binary forms, with or without 1489099Sfjoe * modification, are permitted provided that the following conditions 1589099Sfjoe * are met: 1689099Sfjoe * 1. Redistributions of source code must retain the above copyright 1789099Sfjoe * notice, this list of conditions and the following disclaimer. 1889099Sfjoe * 2. Redistributions in binary form must reproduce the above copyright 1989099Sfjoe * notice, this list of conditions and the following disclaimer in the 2089099Sfjoe * documentation and/or other materials provided with the distribution. 2189099Sfjoe * 3. All advertising materials mentioning features or use of this software 2289099Sfjoe * must display the following acknowledgement: 2389099Sfjoe * This product includes software developed by the NetBSD 2489099Sfjoe * Foundation, Inc. and its contributors. 2589099Sfjoe * 4. Neither the name of The NetBSD Foundation nor the names of its 2689099Sfjoe * contributors may be used to endorse or promote products derived 2789099Sfjoe * from this software without specific prior written permission. 2889099Sfjoe * 2989099Sfjoe * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 3089099Sfjoe * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 3189099Sfjoe * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 3289099Sfjoe * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 3389099Sfjoe * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 3489099Sfjoe * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 3589099Sfjoe * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 3689099Sfjoe * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 3789099Sfjoe * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 3889099Sfjoe * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 3989099Sfjoe * POSSIBILITY OF SUCH DAMAGE. 4089099Sfjoe */ 4189099Sfjoe 4289099Sfjoe/* 4389099Sfjoe * Chip core driver for the SMC90c26 / SMC90c56 (and SMC90c66 in '56 4489099Sfjoe * compatibility mode) boards 4589099Sfjoe */ 4689099Sfjoe 4789099Sfjoe/* #define CMSOFTCOPY */ 4889099Sfjoe#define CMRETRANSMIT /**/ 49109771Sfjoe/* #define CM_DEBUG */ 5089099Sfjoe 5189099Sfjoe#include <sys/param.h> 5289099Sfjoe#include <sys/systm.h> 5389099Sfjoe#include <sys/sockio.h> 5489099Sfjoe#include <sys/mbuf.h> 5589099Sfjoe#include <sys/module.h> 5689099Sfjoe#include <sys/kernel.h> 5789099Sfjoe#include <sys/socket.h> 5889099Sfjoe#include <sys/syslog.h> 5989099Sfjoe#include <sys/bus.h> 6089099Sfjoe 6189099Sfjoe#include <machine/bus.h> 6289099Sfjoe#include <sys/rman.h> 6389099Sfjoe#include <machine/resource.h> 6489099Sfjoe 6589099Sfjoe#if __FreeBSD_version < 500000 6689099Sfjoe#include <machine/clock.h> 6789099Sfjoe#endif 6889099Sfjoe 6989099Sfjoe#include <net/if.h> 7089099Sfjoe#include <net/if_dl.h> 7189099Sfjoe#include <net/if_types.h> 7289099Sfjoe#include <net/if_arc.h> 7389099Sfjoe 7489099Sfjoe#include <dev/cm/smc90cx6reg.h> 7589099Sfjoe#include <dev/cm/smc90cx6var.h> 7689099Sfjoe 7789099SfjoeMODULE_DEPEND(if_cm, arcnet, 1, 1, 1); 7889099Sfjoe 7989099Sfjoe/* these should be elsewhere */ 8089099Sfjoe 8189099Sfjoe#define ARC_MIN_LEN 1 8289099Sfjoe#define ARC_MIN_FORBID_LEN 254 8389099Sfjoe#define ARC_MAX_FORBID_LEN 256 8489099Sfjoe#define ARC_MAX_LEN 508 8589099Sfjoe#define ARC_ADDR_LEN 1 8689099Sfjoe 8789099Sfjoe/* for watchdog timer. This should be more than enough. */ 8889099Sfjoe#define ARCTIMEOUT (5*IFNET_SLOWHZ) 8989099Sfjoe 9089099Sfjoe/* short notation */ 9189099Sfjoe 9289099Sfjoe#define GETREG(off) \ 9389099Sfjoe bus_space_read_1(rman_get_bustag((sc)->port_res), \ 9489099Sfjoe rman_get_bushandle((sc)->port_res), \ 9589099Sfjoe (off)) 9689099Sfjoe#define PUTREG(off, value) \ 9789099Sfjoe bus_space_write_1(rman_get_bustag((sc)->port_res), \ 9889099Sfjoe rman_get_bushandle((sc)->port_res), \ 9989099Sfjoe (off), (value)) 10089099Sfjoe#define GETMEM(off) \ 10189099Sfjoe bus_space_read_1(rman_get_bustag((sc)->mem_res), \ 10289099Sfjoe rman_get_bushandle((sc)->mem_res), \ 10389099Sfjoe (off)) 10489099Sfjoe#define PUTMEM(off, value) \ 10589099Sfjoe bus_space_write_1(rman_get_bustag((sc)->mem_res), \ 10689099Sfjoe rman_get_bushandle((sc)->mem_res), \ 10789099Sfjoe (off), (value)) 10889099Sfjoe 10989099Sfjoedevclass_t cm_devclass; 11089099Sfjoe 11189099Sfjoe/* 11289099Sfjoe * This currently uses 2 bufs for tx, 2 for rx 11389099Sfjoe * 11489099Sfjoe * New rx protocol: 11589099Sfjoe * 11689099Sfjoe * rx has a fillcount variable. If fillcount > (NRXBUF-1), 11789099Sfjoe * rx can be switched off from rx hard int. 11889099Sfjoe * Else rx is restarted on the other receiver. 11989099Sfjoe * rx soft int counts down. if it is == (NRXBUF-1), it restarts 12089099Sfjoe * the receiver. 12189099Sfjoe * To ensure packet ordering (we need that for 1201 later), we have a counter 12289099Sfjoe * which is incremented modulo 256 on each receive and a per buffer 12389099Sfjoe * variable, which is set to the counter on filling. The soft int can 12489099Sfjoe * compare both values to determine the older packet. 12589099Sfjoe * 12689099Sfjoe * Transmit direction: 12789099Sfjoe * 12889099Sfjoe * cm_start checks tx_fillcount 12989099Sfjoe * case 2: return 13089099Sfjoe * 13189099Sfjoe * else fill tx_act ^ 1 && inc tx_fillcount 13289099Sfjoe * 13389099Sfjoe * check tx_fillcount again. 134148887Srwatson * case 2: set IFF_OACTIVE to stop arc_output from filling us. 13589099Sfjoe * case 1: start tx 13689099Sfjoe * 13789099Sfjoe * tint clears IFF_OCATIVE, decrements and checks tx_fillcount 13889099Sfjoe * case 1: start tx on tx_act ^ 1, softcall cm_start 13989099Sfjoe * case 0: softcall cm_start 14089099Sfjoe * 14189099Sfjoe * #define fill(i) get mbuf && copy mbuf to chip(i) 14289099Sfjoe */ 14389099Sfjoe 14492739Salfredvoid cm_init(void *); 14592739Salfredvoid cm_reset(struct cm_softc *); 14692739Salfredvoid cm_start(struct ifnet *); 14792739Salfredint cm_ioctl(struct ifnet *, unsigned long, caddr_t); 14892739Salfredvoid cm_watchdog(struct ifnet *); 14992739Salfredvoid cm_srint(void *vsc); 15092739Salfredstatic void cm_tint(struct cm_softc *, int); 15189099Sfjoevoid cm_reconwatch(void *); 15289099Sfjoe 15389099Sfjoeint 15489099Sfjoecm_probe(dev) 15589099Sfjoe device_t dev; 15689099Sfjoe{ 15789099Sfjoe int error; 15889099Sfjoe struct cm_softc *sc = device_get_softc(dev); 15989099Sfjoe 16089099Sfjoe error = cm_alloc_port(dev, 0, CM_IO_PORTS); 16189099Sfjoe if (error) 16289099Sfjoe return error; 16389099Sfjoe 16489099Sfjoe if (GETREG(CMSTAT) == 0xff) 16589099Sfjoe return ENXIO; 16689099Sfjoe 16789099Sfjoe error = cm_alloc_memory(dev, 0, 0x800); 16889099Sfjoe if (error) 16989099Sfjoe return error; 17089099Sfjoe 17189099Sfjoe return 0; 17289099Sfjoe} 17389099Sfjoe 17489099Sfjoe/* 17589099Sfjoe * Allocate a port resource with the given resource id. 17689099Sfjoe */ 17789099Sfjoeint 17889099Sfjoecm_alloc_port(dev, rid, size) 17989099Sfjoe device_t dev; 18089099Sfjoe int rid; 18189099Sfjoe int size; 18289099Sfjoe{ 18389099Sfjoe struct cm_softc *sc = device_get_softc(dev); 18489099Sfjoe struct resource *res; 18589099Sfjoe 18689099Sfjoe res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 18789099Sfjoe 0ul, ~0ul, size, RF_ACTIVE); 18889099Sfjoe if (res) { 18989099Sfjoe sc->port_rid = rid; 19089099Sfjoe sc->port_res = res; 19189099Sfjoe sc->port_used = size; 19289099Sfjoe return (0); 19389099Sfjoe } else { 19489099Sfjoe return (ENOENT); 19589099Sfjoe } 19689099Sfjoe} 19789099Sfjoe 19889099Sfjoe/* 19989099Sfjoe * Allocate a memory resource with the given resource id. 20089099Sfjoe */ 20189099Sfjoeint 20289099Sfjoecm_alloc_memory(dev, rid, size) 20389099Sfjoe device_t dev; 20489099Sfjoe int rid; 20589099Sfjoe int size; 20689099Sfjoe{ 20789099Sfjoe struct cm_softc *sc = device_get_softc(dev); 20889099Sfjoe struct resource *res; 20989099Sfjoe 21089099Sfjoe res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 21189099Sfjoe 0ul, ~0ul, size, RF_ACTIVE); 21289099Sfjoe if (res) { 21389099Sfjoe sc->mem_rid = rid; 21489099Sfjoe sc->mem_res = res; 21589099Sfjoe sc->mem_used = size; 21689099Sfjoe return (0); 21789099Sfjoe } else { 21889099Sfjoe return (ENOENT); 21989099Sfjoe } 22089099Sfjoe} 22189099Sfjoe 22289099Sfjoe/* 22389099Sfjoe * Allocate an irq resource with the given resource id. 22489099Sfjoe */ 22589099Sfjoeint 22689099Sfjoecm_alloc_irq(dev, rid) 22789099Sfjoe device_t dev; 22889099Sfjoe int rid; 22989099Sfjoe{ 23089099Sfjoe struct cm_softc *sc = device_get_softc(dev); 23189099Sfjoe struct resource *res; 23289099Sfjoe 233127135Snjl res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 23489099Sfjoe 0ul, ~0ul, 1, RF_ACTIVE); 23589099Sfjoe if (res) { 23689099Sfjoe sc->irq_rid = rid; 23789099Sfjoe sc->irq_res = res; 23889099Sfjoe return (0); 23989099Sfjoe } else { 24089099Sfjoe return (ENOENT); 24189099Sfjoe } 24289099Sfjoe} 24389099Sfjoe 24489099Sfjoe/* 24589099Sfjoe * Release all resources 24689099Sfjoe */ 24789099Sfjoevoid 24889099Sfjoecm_release_resources(dev) 24989099Sfjoe device_t dev; 25089099Sfjoe{ 25189099Sfjoe struct cm_softc *sc = device_get_softc(dev); 25289099Sfjoe 25389099Sfjoe if (sc->port_res) { 25489099Sfjoe bus_deactivate_resource(dev, SYS_RES_IOPORT, 25589099Sfjoe sc->port_rid, sc->port_res); 25689099Sfjoe bus_release_resource(dev, SYS_RES_IOPORT, 25789099Sfjoe sc->port_rid, sc->port_res); 25889099Sfjoe sc->port_res = 0; 25989099Sfjoe } 26089099Sfjoe if (sc->mem_res) { 26189099Sfjoe bus_deactivate_resource(dev, SYS_RES_MEMORY, 26289099Sfjoe sc->mem_rid, sc->mem_res); 26389099Sfjoe bus_release_resource(dev, SYS_RES_MEMORY, 26489099Sfjoe sc->mem_rid, sc->mem_res); 26589099Sfjoe sc->mem_res = 0; 26689099Sfjoe } 26789099Sfjoe if (sc->irq_res) { 26889099Sfjoe bus_deactivate_resource(dev, SYS_RES_IRQ, 26989099Sfjoe sc->irq_rid, sc->irq_res); 27089099Sfjoe bus_release_resource(dev, SYS_RES_IRQ, 27189099Sfjoe sc->irq_rid, sc->irq_res); 27289099Sfjoe sc->irq_res = 0; 27389099Sfjoe } 27489099Sfjoe} 27589099Sfjoe 276121816Sbrooksint 277121816Sbrookscm_attach(dev) 27889099Sfjoe device_t dev; 279121816Sbrooks{ 280147256Sbrooks struct cm_softc *sc = device_get_softc(dev); 28189099Sfjoe struct ifnet *ifp = &sc->sc_arccom.ac_if; 28289099Sfjoe int s; 28389099Sfjoe u_int8_t linkaddress; 284147256Sbrooks 285147256Sbrooks s = splhigh(); 286147256Sbrooks 287147256Sbrooks /* 288147256Sbrooks * read the arcnet address from the board 28989099Sfjoe */ 29089099Sfjoe 29189099Sfjoe GETREG(CMRESET); 29289099Sfjoe do { 29389099Sfjoe DELAY(200); 29489099Sfjoe } while (!(GETREG(CMSTAT) & CM_POR)); 29589099Sfjoe 29689099Sfjoe linkaddress = GETMEM(CMMACOFF); 29789099Sfjoe 29889099Sfjoe /* clear the int mask... */ 29989099Sfjoe 30089099Sfjoe sc->sc_intmask = 0; 30189099Sfjoe PUTREG(CMSTAT, 0); 30289099Sfjoe 30389099Sfjoe PUTREG(CMCMD, CM_CONF(CONF_LONG)); 30489099Sfjoe PUTREG(CMCMD, CM_CLR(CLR_POR|CLR_RECONFIG)); 30589099Sfjoe sc->sc_recontime = sc->sc_reconcount = 0; 30689099Sfjoe 30789099Sfjoe /* and reenable kernel int level */ 30889099Sfjoe splx(s); 30989099Sfjoe 31089099Sfjoe /* 31189099Sfjoe * set interface to stopped condition (reset) 31289099Sfjoe */ 31389099Sfjoe cm_stop(sc); 31489099Sfjoe 31589099Sfjoe ifp->if_softc = sc; 31689099Sfjoe if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 31789099Sfjoe ifp->if_output = arc_output; 31889099Sfjoe ifp->if_start = cm_start; 319121752Sbrooks ifp->if_ioctl = cm_ioctl; 320121816Sbrooks ifp->if_watchdog = cm_watchdog; 321121752Sbrooks ifp->if_init = cm_init; 322121752Sbrooks /* XXX IFQ_SET_READY(&ifp->if_snd); */ 323121752Sbrooks ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 324121752Sbrooks ifp->if_timer = 0; 325121752Sbrooks ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; 326121752Sbrooks 327121752Sbrooks arc_ifattach(ifp, linkaddress); 328121752Sbrooks 329133678Srwatson#ifdef CMSOFTCOPY 33089099Sfjoe sc->sc_rxcookie = softintr_establish(IPL_SOFTNET, cm_srint, sc); 331121752Sbrooks sc->sc_txcookie = softintr_establish(IPL_SOFTNET, 33289099Sfjoe (void (*)(void *))cm_start, ifp); 33389099Sfjoe#endif 334121752Sbrooks 335121752Sbrooks#if __FreeBSD_version < 500000 336121752Sbrooks callout_init(&sc->sc_recon_ch); 33789099Sfjoe#else 33889099Sfjoe callout_init(&sc->sc_recon_ch, 0); 33989099Sfjoe#endif 340121752Sbrooks 34189099Sfjoe if_printf(ifp, "link addr 0x%02x (%d)\n", linkaddress, linkaddress); 342121752Sbrooks return 0; 34389099Sfjoe} 34489099Sfjoe 345109771Sfjoe/* 34689099Sfjoe * Initialize device 34789099Sfjoe * 34889099Sfjoe */ 34989099Sfjoevoid 35089099Sfjoecm_init(xsc) 35189099Sfjoe void *xsc; 35289099Sfjoe{ 35389099Sfjoe struct cm_softc *sc = (struct cm_softc *)xsc; 35489099Sfjoe struct ifnet *ifp; 35589099Sfjoe int s; 35689099Sfjoe 35789099Sfjoe ifp = &sc->sc_arccom.ac_if; 35889099Sfjoe 35989099Sfjoe if ((ifp->if_flags & IFF_RUNNING) == 0) { 36089099Sfjoe s = splimp(); 361147256Sbrooks ifp->if_flags |= IFF_RUNNING; 36289099Sfjoe cm_reset(sc); 363148887Srwatson cm_start(ifp); 36489099Sfjoe splx(s); 365148887Srwatson } 36689099Sfjoe} 36789099Sfjoe 36889099Sfjoe/* 36989099Sfjoe * Reset the interface... 37089099Sfjoe * 37189099Sfjoe * this assumes that it is called inside a critical section... 37289099Sfjoe * 37389099Sfjoe */ 37489099Sfjoevoid 37589099Sfjoecm_reset(sc) 37689099Sfjoe struct cm_softc *sc; 37789099Sfjoe{ 37889099Sfjoe struct ifnet *ifp; 37989099Sfjoe int linkaddress; 38089099Sfjoe 38189099Sfjoe ifp = &sc->sc_arccom.ac_if; 38289099Sfjoe 38389099Sfjoe#ifdef CM_DEBUG 38489099Sfjoe if_printf(ifp, "reset\n"); 385147256Sbrooks#endif 38689099Sfjoe /* stop and restart hardware */ 38789099Sfjoe 388104251Sbrooks GETREG(CMRESET); 38989099Sfjoe do { 39089099Sfjoe DELAY(200); 39189099Sfjoe } while (!(GETREG(CMSTAT) & CM_POR)); 39289099Sfjoe 39389099Sfjoe linkaddress = GETMEM(CMMACOFF); 39489099Sfjoe 39589099Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 2) 39689099Sfjoe if_printf(ifp, "reset: card reset, link addr = 0x%02x (%d)\n", 39789099Sfjoe linkaddress, linkaddress); 39889099Sfjoe#endif 39989099Sfjoe 400104251Sbrooks /* tell the routing level about the (possibly changed) link address */ 401104251Sbrooks arc_storelladdr(ifp, linkaddress); 40289099Sfjoe arc_frag_init(ifp); 40389099Sfjoe 40489099Sfjoe /* POR is NMI, but we need it below: */ 40589099Sfjoe sc->sc_intmask = CM_RECON|CM_POR; 40689099Sfjoe PUTREG(CMSTAT, sc->sc_intmask); 40789099Sfjoe PUTREG(CMCMD, CM_CONF(CONF_LONG)); 40889099Sfjoe 40989099Sfjoe#ifdef CM_DEBUG 41089099Sfjoe if_printf(ifp, "reset: chip configured, status=0x%02x\n", 41189099Sfjoe GETREG(CMSTAT)); 41289099Sfjoe#endif 41389099Sfjoe PUTREG(CMCMD, CM_CLR(CLR_POR|CLR_RECONFIG)); 414104251Sbrooks 415104251Sbrooks#ifdef CM_DEBUG 41689099Sfjoe if_printf(ifp, "reset: bits cleared, status=0x%02x\n", 41789099Sfjoe GETREG(CMSTAT)); 41889099Sfjoe#endif 41989099Sfjoe 420104251Sbrooks sc->sc_reconcount_excessive = ARC_EXCESSIVE_RECONS; 421104251Sbrooks 42289099Sfjoe /* start receiver */ 42389099Sfjoe 42489099Sfjoe sc->sc_intmask |= CM_RI; 42589099Sfjoe sc->sc_rx_fillcount = 0; 42689099Sfjoe sc->sc_rx_act = 2; 42789099Sfjoe 42889099Sfjoe PUTREG(CMCMD, CM_RXBC(2)); 42989099Sfjoe PUTREG(CMSTAT, sc->sc_intmask); 43089099Sfjoe 43189099Sfjoe#ifdef CM_DEBUG 43289099Sfjoe if_printf(ifp, "reset: started receiver, status=0x%02x\n", 43389099Sfjoe GETREG(CMSTAT)); 43489099Sfjoe#endif 43589099Sfjoe 436104251Sbrooks /* and init transmitter status */ 437104251Sbrooks sc->sc_tx_act = 0; 43889099Sfjoe sc->sc_tx_fillcount = 0; 43989099Sfjoe 44089099Sfjoe ifp->if_flags |= IFF_RUNNING; 44189099Sfjoe ifp->if_flags &= ~IFF_OACTIVE; 44289099Sfjoe 44389099Sfjoe cm_start(ifp); 444148887Srwatson} 445148887Srwatson 44689099Sfjoe/* 44789099Sfjoe * Take interface offline 44889099Sfjoe */ 44989099Sfjoevoid 45089099Sfjoecm_stop(sc) 45189099Sfjoe struct cm_softc *sc; 45289099Sfjoe{ 45389099Sfjoe /* Stop the interrupts */ 45489099Sfjoe PUTREG(CMSTAT, 0); 45589099Sfjoe 45689099Sfjoe /* Stop the interface */ 45789099Sfjoe GETREG(CMRESET); 45889099Sfjoe 45989099Sfjoe /* Stop watchdog timer */ 46089099Sfjoe sc->sc_arccom.ac_if.if_timer = 0; 46189099Sfjoe} 46289099Sfjoe 46389099Sfjoe/* 464147256Sbrooks * Start output on interface. Get another datagram to send 46589099Sfjoe * off the interface queue, and copy it to the 46689099Sfjoe * interface becore starting the output 46789099Sfjoe * 46889099Sfjoe * this assumes that it is called inside a critical section... 46989099Sfjoe * XXX hm... does it still? 47089099Sfjoe * 47189099Sfjoe */ 47289099Sfjoevoid 47389099Sfjoecm_start(ifp) 47489099Sfjoe struct ifnet *ifp; 47589099Sfjoe{ 47689099Sfjoe struct cm_softc *sc = ifp->if_softc; 47789099Sfjoe struct mbuf *m,*mp; 47889099Sfjoe 47989099Sfjoe int cm_ram_ptr; 48089099Sfjoe int len, tlen, offset, s, buffer; 48189099Sfjoe#ifdef CMTIMINGS 48289099Sfjoe u_long copystart, lencopy, perbyte; 48389099Sfjoe#endif 48489099Sfjoe 48589099Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 3) 48689099Sfjoe if_printf(ifp, "start(%p)\n", ifp); 48789099Sfjoe#endif 48889099Sfjoe 48989099Sfjoe if ((ifp->if_flags & IFF_RUNNING) == 0) 490104251Sbrooks return; 49189099Sfjoe 49289099Sfjoe s = splimp(); 493148887Srwatson 49489099Sfjoe if (sc->sc_tx_fillcount >= 2) { 49589099Sfjoe splx(s); 49689099Sfjoe return; 49789099Sfjoe } 49889099Sfjoe 49989099Sfjoe m = arc_frag_next(ifp); 50089099Sfjoe buffer = sc->sc_tx_act ^ 1; 50189099Sfjoe 50289099Sfjoe splx(s); 50389099Sfjoe 50489099Sfjoe if (m == 0) 50589099Sfjoe return; 50689099Sfjoe 50789099Sfjoe#ifdef CM_DEBUG 50889099Sfjoe if (m->m_len < ARC_HDRLEN) 50989099Sfjoe m = m_pullup(m, ARC_HDRLEN);/* gcc does structure padding */ 51089099Sfjoe if_printf(ifp, "start: filling %d from %d to %d type %d\n", 51189099Sfjoe buffer, mtod(m, u_char *)[0], 51289099Sfjoe mtod(m, u_char *)[1], mtod(m, u_char *)[2]); 51389099Sfjoe#else 514104251Sbrooks if (m->m_len < 2) 515104251Sbrooks m = m_pullup(m, 2); 51689099Sfjoe#endif 51789099Sfjoe cm_ram_ptr = buffer * 512; 51889099Sfjoe 51989099Sfjoe if (m == 0) 52089099Sfjoe return; 521109771Sfjoe 52289099Sfjoe /* write the addresses to RAM and throw them away */ 52389099Sfjoe 52489099Sfjoe /* 52589099Sfjoe * Hardware does this: Yet Another Microsecond Saved. 52689099Sfjoe * (btw, timing code says usually 2 microseconds) 52789099Sfjoe * PUTMEM(cm_ram_ptr + 0, mtod(m, u_char *)[0]); 52889099Sfjoe */ 52989099Sfjoe 53089099Sfjoe PUTMEM(cm_ram_ptr + 1, mtod(m, u_char *)[1]); 53189099Sfjoe m_adj(m, 2); 53289099Sfjoe 53389099Sfjoe /* get total length left at this point */ 53489099Sfjoe tlen = m->m_pkthdr.len; 53589099Sfjoe if (tlen < ARC_MIN_FORBID_LEN) { 53689099Sfjoe offset = 256 - tlen; 53789099Sfjoe PUTMEM(cm_ram_ptr + 2, offset); 53889099Sfjoe } else { 53989099Sfjoe PUTMEM(cm_ram_ptr + 2, 0); 54089099Sfjoe if (tlen <= ARC_MAX_FORBID_LEN) 54189099Sfjoe offset = 255; /* !!! */ 54289099Sfjoe else { 54389099Sfjoe if (tlen > ARC_MAX_LEN) 54489099Sfjoe tlen = ARC_MAX_LEN; 54589099Sfjoe offset = 512 - tlen; 54689099Sfjoe } 54789099Sfjoe PUTMEM(cm_ram_ptr + 3, offset); 54889099Sfjoe 54989099Sfjoe } 55089099Sfjoe cm_ram_ptr += offset; 55189099Sfjoe 55289099Sfjoe /* lets loop through the mbuf chain */ 55389099Sfjoe 55489099Sfjoe for (mp = m; mp; mp = mp->m_next) { 55589099Sfjoe if ((len = mp->m_len)) { /* YAMS */ 55689099Sfjoe bus_space_write_region_1( 55789099Sfjoe rman_get_bustag(sc->mem_res), 55889099Sfjoe rman_get_bushandle(sc->mem_res), 55989099Sfjoe cm_ram_ptr, mtod(mp, caddr_t), len); 56089099Sfjoe 56189099Sfjoe cm_ram_ptr += len; 56289099Sfjoe } 56389099Sfjoe } 56489099Sfjoe 56589099Sfjoe sc->sc_broadcast[buffer] = (m->m_flags & M_BCAST) != 0; 56689099Sfjoe sc->sc_retransmits[buffer] = (m->m_flags & M_BCAST) ? 1 : 5; 56789099Sfjoe 56889099Sfjoe /* actually transmit the packet */ 56989099Sfjoe s = splimp(); 57089099Sfjoe 57189099Sfjoe if (++sc->sc_tx_fillcount > 1) { 57289099Sfjoe /* 57389099Sfjoe * We are filled up to the rim. No more bufs for the moment, 57489099Sfjoe * please. 57589099Sfjoe */ 57689099Sfjoe ifp->if_flags |= IFF_OACTIVE; 57789099Sfjoe } else { 57889099Sfjoe#ifdef CM_DEBUG 57989099Sfjoe if_printf(ifp, "start: starting transmitter on buffer %d\n", 580148887Srwatson buffer); 58189099Sfjoe#endif 58289099Sfjoe /* Transmitter was off, start it */ 583104251Sbrooks sc->sc_tx_act = buffer; 584104251Sbrooks 58589099Sfjoe /* 58689099Sfjoe * We still can accept another buf, so don't: 58789099Sfjoe * ifp->if_flags |= IFF_OACTIVE; 58889099Sfjoe */ 58989099Sfjoe sc->sc_intmask |= CM_TA; 59089099Sfjoe PUTREG(CMCMD, CM_TX(buffer)); 591148887Srwatson PUTREG(CMSTAT, sc->sc_intmask); 59289099Sfjoe 59389099Sfjoe sc->sc_arccom.ac_if.if_timer = ARCTIMEOUT; 59489099Sfjoe } 59589099Sfjoe splx(s); 59689099Sfjoe m_freem(m); 597147256Sbrooks 59889099Sfjoe /* 59989099Sfjoe * After 10 times reading the docs, I realized 60089099Sfjoe * that in the case the receiver NAKs the buffer request, 60189099Sfjoe * the hardware retries till shutdown. 60289099Sfjoe * This is integrated now in the code above. 60389099Sfjoe */ 60489099Sfjoe 60589099Sfjoe return; 60689099Sfjoe} 60789099Sfjoe 60889099Sfjoe/* 60989099Sfjoe * Arcnet interface receiver soft interrupt: 61089099Sfjoe * get the stuff out of any filled buffer we find. 61189099Sfjoe */ 61289099Sfjoevoid 61389099Sfjoecm_srint(vsc) 61489099Sfjoe void *vsc; 61589099Sfjoe{ 61689099Sfjoe struct cm_softc *sc = (struct cm_softc *)vsc; 61789099Sfjoe int buffer, len, offset, s, type; 61889099Sfjoe int cm_ram_ptr; 61989099Sfjoe struct mbuf *m; 62089099Sfjoe struct arc_header *ah; 62189099Sfjoe struct ifnet *ifp; 62289099Sfjoe 62389099Sfjoe ifp = &sc->sc_arccom.ac_if; 62489099Sfjoe 62589099Sfjoe s = splimp(); 62689099Sfjoe buffer = sc->sc_rx_act ^ 1; 627147256Sbrooks splx(s); 62889099Sfjoe 62989099Sfjoe /* Allocate header mbuf */ 63089099Sfjoe MGETHDR(m, M_DONTWAIT, MT_DATA); 63189099Sfjoe 63289099Sfjoe if (m == 0) { 63389099Sfjoe /* 634111119Simp * in case s.th. goes wrong with mem, drop it 63589099Sfjoe * to make sure the receiver can be started again 63689099Sfjoe * count it as input error (we dont have any other 63789099Sfjoe * detectable) 63889099Sfjoe */ 63989099Sfjoe ifp->if_ierrors++; 64089099Sfjoe goto cleanup; 64189099Sfjoe } 64289099Sfjoe 64389099Sfjoe m->m_pkthdr.rcvif = ifp; 64489099Sfjoe 64589099Sfjoe /* 64689099Sfjoe * Align so that IP packet will be longword aligned. Here we 64789099Sfjoe * assume that m_data of new packet is longword aligned. 64889099Sfjoe * When implementing PHDS, we might have to change it to 2, 64989099Sfjoe * (2*sizeof(ulong) - CM_HDRNEWLEN)), packet type dependent. 65089099Sfjoe */ 65189099Sfjoe 65289099Sfjoe cm_ram_ptr = buffer * 512; 65389099Sfjoe offset = GETMEM(cm_ram_ptr + 2); 65489099Sfjoe if (offset) 65589099Sfjoe len = 256 - offset; 656109771Sfjoe else { 65789099Sfjoe offset = GETMEM(cm_ram_ptr + 3); 65889099Sfjoe len = 512 - offset; 65989099Sfjoe } 66089099Sfjoe 66189099Sfjoe /* 66289099Sfjoe * first +2 bytes for align fixup below 66389099Sfjoe * second +2 bytes are for src/dst addresses 66489099Sfjoe */ 66589099Sfjoe if ((len + 2 + 2) > MHLEN) { 66689099Sfjoe /* attach an mbuf cluster */ 66789099Sfjoe MCLGET(m, M_DONTWAIT); 66889099Sfjoe 66989099Sfjoe /* Insist on getting a cluster */ 67089099Sfjoe if ((m->m_flags & M_EXT) == 0) { 671111119Simp ifp->if_ierrors++; 67289099Sfjoe goto cleanup; 67389099Sfjoe } 67489099Sfjoe } 67589099Sfjoe 67689099Sfjoe if (m == 0) { 67789099Sfjoe ifp->if_ierrors++; 67889099Sfjoe goto cleanup; 67989099Sfjoe } 68089099Sfjoe 68189099Sfjoe type = GETMEM(cm_ram_ptr + offset); 68289099Sfjoe m->m_data += 1 + arc_isphds(type); 68389099Sfjoe /* mbuf filled with ARCnet addresses */ 68489099Sfjoe m->m_pkthdr.len = m->m_len = len + 2; 68589099Sfjoe 68689099Sfjoe ah = mtod(m, struct arc_header *); 68789099Sfjoe ah->arc_shost = GETMEM(cm_ram_ptr + 0); 68889099Sfjoe ah->arc_dhost = GETMEM(cm_ram_ptr + 1); 68989099Sfjoe 69089099Sfjoe bus_space_read_region_1( 69189099Sfjoe rman_get_bustag(sc->mem_res), rman_get_bushandle(sc->mem_res), 69289099Sfjoe cm_ram_ptr + offset, mtod(m, u_char *) + 2, len); 69389099Sfjoe 69489099Sfjoe arc_input(ifp, m); 69589099Sfjoe 69689099Sfjoe m = NULL; 69789099Sfjoe ifp->if_ipackets++; 69889099Sfjoe 69989099Sfjoecleanup: 70089099Sfjoe 70189099Sfjoe if (m != NULL) 70289099Sfjoe m_freem(m); 70389099Sfjoe 70489099Sfjoe /* mark buffer as invalid by source id 0 */ 70589099Sfjoe PUTMEM(buffer << 9, 0); 70689099Sfjoe s = splimp(); 70789099Sfjoe 70889099Sfjoe if (--sc->sc_rx_fillcount == 2 - 1) { 70989099Sfjoe 71089099Sfjoe /* was off, restart it on buffer just emptied */ 71189099Sfjoe sc->sc_rx_act = buffer; 71289099Sfjoe sc->sc_intmask |= CM_RI; 71389099Sfjoe 71489099Sfjoe /* this also clears the RI flag interupt: */ 71589099Sfjoe PUTREG(CMCMD, CM_RXBC(buffer)); 71689099Sfjoe PUTREG(CMSTAT, sc->sc_intmask); 71789099Sfjoe 71889099Sfjoe#ifdef CM_DEBUG 71989099Sfjoe if_printf(ifp, "srint: restarted rx on buf %d\n", buffer); 72089099Sfjoe#endif 72189099Sfjoe } 72289099Sfjoe splx(s); 723104251Sbrooks} 72489099Sfjoe 72589099Sfjoe__inline static void 72689099Sfjoecm_tint(sc, isr) 72789099Sfjoe struct cm_softc *sc; 72889099Sfjoe int isr; 72989099Sfjoe{ 73089099Sfjoe struct ifnet *ifp; 73189099Sfjoe 73289099Sfjoe int buffer; 73389099Sfjoe#ifdef CMTIMINGS 73489099Sfjoe int clknow; 73589099Sfjoe#endif 73689099Sfjoe 73789099Sfjoe ifp = &(sc->sc_arccom.ac_if); 73889099Sfjoe buffer = sc->sc_tx_act; 73989099Sfjoe 74089099Sfjoe /* 741147256Sbrooks * retransmit code: 74289099Sfjoe * Normal situtations first for fast path: 74389099Sfjoe * If acknowledgement received ok or broadcast, we're ok. 74489099Sfjoe * else if 74589099Sfjoe */ 74689099Sfjoe 74789099Sfjoe if (isr & CM_TMA || sc->sc_broadcast[buffer]) 74889099Sfjoe sc->sc_arccom.ac_if.if_opackets++; 74989099Sfjoe#ifdef CMRETRANSMIT 75089099Sfjoe else if (ifp->if_flags & IFF_LINK2 && ifp->if_timer > 0 75189099Sfjoe && --sc->sc_retransmits[buffer] > 0) { 752147256Sbrooks /* retransmit same buffer */ 75389099Sfjoe PUTREG(CMCMD, CM_TX(buffer)); 75489099Sfjoe return; 75589099Sfjoe } 75689099Sfjoe#endif 75789099Sfjoe else 75889099Sfjoe ifp->if_oerrors++; 75989099Sfjoe 76089099Sfjoe 76189099Sfjoe /* We know we can accept another buffer at this point. */ 76289099Sfjoe ifp->if_flags &= ~IFF_OACTIVE; 76389099Sfjoe 76489099Sfjoe if (--sc->sc_tx_fillcount > 0) { 76589099Sfjoe 766148887Srwatson /* 76789099Sfjoe * start tx on other buffer. 76889099Sfjoe * This also clears the int flag 76989099Sfjoe */ 77089099Sfjoe buffer ^= 1; 77189099Sfjoe sc->sc_tx_act = buffer; 77289099Sfjoe 77389099Sfjoe /* 77489099Sfjoe * already given: 77589099Sfjoe * sc->sc_intmask |= CM_TA; 77689099Sfjoe * PUTREG(CMSTAT, sc->sc_intmask); 77789099Sfjoe */ 77889099Sfjoe PUTREG(CMCMD, CM_TX(buffer)); 77989099Sfjoe /* init watchdog timer */ 78089099Sfjoe ifp->if_timer = ARCTIMEOUT; 78189099Sfjoe 78289099Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 1) 78389099Sfjoe if_printf(ifp, 78489099Sfjoe "tint: starting tx on buffer %d, status 0x%02x\n", 78589099Sfjoe buffer, GETREG(CMSTAT)); 78689099Sfjoe#endif 787104251Sbrooks } else { 788104251Sbrooks /* have to disable TX interrupt */ 789104251Sbrooks sc->sc_intmask &= ~CM_TA; 79089099Sfjoe PUTREG(CMSTAT, sc->sc_intmask); 79189099Sfjoe /* ... and watchdog timer */ 79289099Sfjoe ifp->if_timer = 0; 79389099Sfjoe 79489099Sfjoe#ifdef CM_DEBUG 79589099Sfjoe if_printf(ifp, "tint: no more buffers to send, status 0x%02x\n", 79689099Sfjoe GETREG(CMSTAT)); 79789099Sfjoe#endif 79889099Sfjoe } 799104251Sbrooks 800104251Sbrooks /* XXXX TODO */ 80189099Sfjoe#ifdef CMSOFTCOPY 80289099Sfjoe /* schedule soft int to fill a new buffer for us */ 80389099Sfjoe softintr_schedule(sc->sc_txcookie); 80489099Sfjoe#else 80589099Sfjoe /* call it directly */ 80689099Sfjoe cm_start(ifp); 80789099Sfjoe#endif 80889099Sfjoe} 80989099Sfjoe 81089099Sfjoe/* 81189099Sfjoe * Our interrupt routine 81289099Sfjoe */ 81389099Sfjoevoid 81489099Sfjoecmintr(arg) 81589099Sfjoe void *arg; 81689099Sfjoe{ 81789099Sfjoe struct cm_softc *sc = arg; 81889099Sfjoe struct ifnet *ifp = &sc->sc_arccom.ac_if; 81989099Sfjoe 82089099Sfjoe u_char isr, maskedisr; 82189099Sfjoe int buffer; 822147256Sbrooks u_long newsec; 82389099Sfjoe 82489099Sfjoe isr = GETREG(CMSTAT); 82589099Sfjoe maskedisr = isr & sc->sc_intmask; 82689099Sfjoe if (!maskedisr) 82789099Sfjoe return; 82889099Sfjoe do { 82989099Sfjoe 83089099Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 1) 83189099Sfjoe if_printf(ifp, "intr: status 0x%02x, intmask 0x%02x\n", 83289099Sfjoe isr, sc->sc_intmask); 83389099Sfjoe#endif 834109771Sfjoe 835104251Sbrooks if (maskedisr & CM_POR) { 836104251Sbrooks /* 83789099Sfjoe * XXX We should never see this. Don't bother to store 83889099Sfjoe * the address. 83989099Sfjoe * sc->sc_arccom.ac_anaddr = GETMEM(CMMACOFF); 84089099Sfjoe */ 84189099Sfjoe PUTREG(CMCMD, CM_CLR(CLR_POR)); 84289099Sfjoe log(LOG_WARNING, 843147256Sbrooks "%s: intr: got spurious power on reset int\n", 84489099Sfjoe ifp->if_xname); 84589099Sfjoe } 84689099Sfjoe 847121816Sbrooks if (maskedisr & CM_RECON) { 848121816Sbrooks /* 84989099Sfjoe * we dont need to: 85089099Sfjoe * PUTREG(CMCMD, CM_CONF(CONF_LONG)); 85189099Sfjoe */ 85289099Sfjoe PUTREG(CMCMD, CM_CLR(CLR_RECONFIG)); 85389099Sfjoe sc->sc_arccom.ac_if.if_collisions++; 85489099Sfjoe 85589099Sfjoe /* 85689099Sfjoe * If less than 2 seconds per reconfig: 857147256Sbrooks * If ARC_EXCESSIVE_RECONFIGS 85889099Sfjoe * since last burst, complain and set treshold for 85989099Sfjoe * warnings to ARC_EXCESSIVE_RECONS_REWARN. 86089099Sfjoe * 86189099Sfjoe * This allows for, e.g., new stations on the cable, or 86289099Sfjoe * cable switching as long as it is over after 86389099Sfjoe * (normally) 16 seconds. 86489099Sfjoe * 86589099Sfjoe * XXX TODO: check timeout bits in status word and 86689099Sfjoe * double time if necessary. 86789099Sfjoe */ 86889099Sfjoe 86989099Sfjoe callout_stop(&sc->sc_recon_ch); 87089099Sfjoe newsec = time_second; 87189099Sfjoe if ((newsec - sc->sc_recontime <= 2) && 87289099Sfjoe (++sc->sc_reconcount == ARC_EXCESSIVE_RECONS)) { 87389099Sfjoe log(LOG_WARNING, 87489099Sfjoe "%s: excessive token losses, " 87589099Sfjoe "cable problem?\n", 87689099Sfjoe ifp->if_xname); 87789099Sfjoe } 878121816Sbrooks sc->sc_recontime = newsec; 87989099Sfjoe callout_reset(&sc->sc_recon_ch, 15 * hz, 880121816Sbrooks cm_reconwatch, (void *)sc); 88189099Sfjoe } 88289099Sfjoe 88389099Sfjoe if (maskedisr & CM_RI) { 88489099Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 1) 88589099Sfjoe if_printf(ifp, "intr: hard rint, act %d\n", 88689099Sfjoe sc->sc_rx_act); 88789099Sfjoe#endif 88889099Sfjoe 889104251Sbrooks buffer = sc->sc_rx_act; 890104251Sbrooks /* look if buffer is marked invalid: */ 89189099Sfjoe if (GETMEM(buffer * 512) == 0) { 89289099Sfjoe /* 89389099Sfjoe * invalid marked buffer (or illegally 89489099Sfjoe * configured sender) 895109771Sfjoe */ 89689099Sfjoe log(LOG_WARNING, 89789099Sfjoe "%s: spurious RX interupt or sender 0 " 89889099Sfjoe " (ignored)\n", ifp->if_xname); 89989099Sfjoe /* 90089099Sfjoe * restart receiver on same buffer. 901121816Sbrooks * XXX maybe better reset interface? 902121816Sbrooks */ 90389099Sfjoe PUTREG(CMCMD, CM_RXBC(buffer)); 90489099Sfjoe } else { 90589099Sfjoe if (++sc->sc_rx_fillcount > 1) { 90689099Sfjoe sc->sc_intmask &= ~CM_RI; 90789099Sfjoe PUTREG(CMSTAT, sc->sc_intmask); 90889099Sfjoe } else { 90989099Sfjoe buffer ^= 1; 91089099Sfjoe sc->sc_rx_act = buffer; 91189099Sfjoe 91289099Sfjoe /* 91389099Sfjoe * Start receiver on other receive 91489099Sfjoe * buffer. This also clears the RI 91589099Sfjoe * interupt flag. 91689099Sfjoe */ 91789099Sfjoe PUTREG(CMCMD, CM_RXBC(buffer)); 91889099Sfjoe /* in RX intr, so mask is ok for RX */ 91989099Sfjoe 92089099Sfjoe#ifdef CM_DEBUG 92189099Sfjoe if_printf(ifp, "strt rx for buf %d, " 92289099Sfjoe "stat 0x%02x\n", 92389099Sfjoe sc->sc_rx_act, GETREG(CMSTAT)); 92489099Sfjoe#endif 925104251Sbrooks } 92689099Sfjoe 92789099Sfjoe#ifdef CMSOFTCOPY 92889099Sfjoe /* 92989099Sfjoe * this one starts a soft int to copy out 93089099Sfjoe * of the hw 93189099Sfjoe */ 93289099Sfjoe softintr_schedule(sc->sc_rxcookie); 93389099Sfjoe#else 93489099Sfjoe /* this one does the copy here */ 93589099Sfjoe cm_srint(sc); 93689099Sfjoe#endif 93789099Sfjoe } 93889099Sfjoe } 93989099Sfjoe if (maskedisr & CM_TA) { 94089099Sfjoe cm_tint(sc, isr); 94189099Sfjoe } 94289099Sfjoe isr = GETREG(CMSTAT); 94389099Sfjoe maskedisr = isr & sc->sc_intmask; 94489099Sfjoe } while (maskedisr); 94589099Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 1) 94689099Sfjoe if_printf(ifp, "intr (exit): status 0x%02x, intmask 0x%02x\n", 94789099Sfjoe isr, sc->sc_intmask); 94889099Sfjoe#endif 949109771Sfjoe} 950104251Sbrooks 951104251Sbrooksvoid 95289099Sfjoecm_reconwatch(arg) 95389099Sfjoe void *arg; 95489099Sfjoe{ 95589099Sfjoe struct cm_softc *sc = arg; 95689099Sfjoe struct ifnet *ifp = &sc->sc_arccom.ac_if; 95789099Sfjoe 95889099Sfjoe if (sc->sc_reconcount >= ARC_EXCESSIVE_RECONS) { 95989099Sfjoe sc->sc_reconcount = 0; 960147256Sbrooks log(LOG_WARNING, "%s: token valid again.\n", 96189099Sfjoe ifp->if_xname); 96289099Sfjoe } 96389099Sfjoe sc->sc_reconcount = 0; 964121816Sbrooks} 965121816Sbrooks 96689099Sfjoe 96789099Sfjoe/* 96889099Sfjoe * Process an ioctl request. 96989099Sfjoe * This code needs some work - it looks pretty ugly. 97089099Sfjoe */ 97189099Sfjoeint 97289099Sfjoecm_ioctl(ifp, command, data) 97389099Sfjoe struct ifnet *ifp; 97489099Sfjoe u_long command; 97589099Sfjoe caddr_t data; 97689099Sfjoe{ 97789099Sfjoe struct cm_softc *sc; 97889099Sfjoe struct ifaddr *ifa; 97989099Sfjoe struct ifreq *ifr; 98089099Sfjoe int s, error; 98189099Sfjoe 98289099Sfjoe error = 0; 98389099Sfjoe sc = ifp->if_softc; 98489099Sfjoe ifa = (struct ifaddr *)data; 98589099Sfjoe ifr = (struct ifreq *)data; 98689099Sfjoe s = splimp(); 98789099Sfjoe 98889099Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 2) 98989099Sfjoe if_printf(ifp, "ioctl() called, cmd = 0x%lx\n", command); 99089099Sfjoe#endif 99189099Sfjoe 99289099Sfjoe switch (command) { 993104251Sbrooks case SIOCSIFADDR: 99489099Sfjoe case SIOCGIFADDR: 99589099Sfjoe case SIOCADDMULTI: 99689099Sfjoe case SIOCDELMULTI: 99789099Sfjoe case SIOCSIFMTU: 998109771Sfjoe error = arc_ioctl(ifp, command, data); 99989099Sfjoe break; 100089099Sfjoe 100189099Sfjoe case SIOCSIFFLAGS: 100289099Sfjoe if ((ifp->if_flags & IFF_UP) == 0 && 100389099Sfjoe (ifp->if_flags & IFF_RUNNING) != 0) { 100489099Sfjoe /* 100589099Sfjoe * If interface is marked down and it is running, 100689099Sfjoe * then stop it. 1007148887Srwatson */ 100889099Sfjoe cm_stop(sc); 100989099Sfjoe ifp->if_flags &= ~IFF_RUNNING; 101089099Sfjoe } else if ((ifp->if_flags & IFF_UP) != 0 && 101189099Sfjoe (ifp->if_flags & IFF_RUNNING) == 0) { 101289099Sfjoe /* 1013148887Srwatson * If interface is marked up and it is stopped, then 101489099Sfjoe * start it. 1015148887Srwatson */ 101689099Sfjoe cm_init(sc); 101789099Sfjoe } 101889099Sfjoe break; 101989099Sfjoe 102089099Sfjoe default: 102189099Sfjoe error = EINVAL; 102289099Sfjoe break; 102389099Sfjoe } 102489099Sfjoe 102589099Sfjoe splx(s); 102689099Sfjoe return (error); 102789099Sfjoe} 102889099Sfjoe 102989099Sfjoe/* 103089099Sfjoe * watchdog routine for transmitter. 103189099Sfjoe * 103289099Sfjoe * We need this, because else a receiver whose hardware is alive, but whose 103389099Sfjoe * software has not enabled the Receiver, would make our hardware wait forever 103489099Sfjoe * Discovered this after 20 times reading the docs. 103589099Sfjoe * 103689099Sfjoe * Only thing we do is disable transmitter. We'll get a transmit timeout, 103789099Sfjoe * and the int handler will have to decide not to retransmit (in case 103889099Sfjoe * retransmission is implemented). 103989099Sfjoe * 1040108470Sschweikh * This one assumes being called inside splimp() 104189099Sfjoe */ 104289099Sfjoe 104389099Sfjoevoid 104489099Sfjoecm_watchdog(ifp) 104589099Sfjoe struct ifnet *ifp; 104689099Sfjoe{ 104789099Sfjoe struct cm_softc *sc = ifp->if_softc; 104889099Sfjoe 104989099Sfjoe PUTREG(CMCMD, CM_TXDIS); 105089099Sfjoe return; 105189099Sfjoe} 105289099Sfjoe