smc90cx6.c revision 147256
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 147256 2005-06-10 16:49:24Z 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. 13489099Sfjoe * 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_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 23489099Sfjoe if (res) { 23589099Sfjoe sc->irq_rid = rid; 23689099Sfjoe sc->irq_res = res; 23789099Sfjoe return (0); 23889099Sfjoe } else { 23989099Sfjoe return (ENOENT); 24089099Sfjoe } 24189099Sfjoe} 24289099Sfjoe 24389099Sfjoe/* 24489099Sfjoe * Release all resources 24589099Sfjoe */ 24689099Sfjoevoid 24789099Sfjoecm_release_resources(dev) 24889099Sfjoe device_t dev; 24989099Sfjoe{ 25089099Sfjoe struct cm_softc *sc = device_get_softc(dev); 25189099Sfjoe 25289099Sfjoe if (sc->port_res) { 25389099Sfjoe bus_deactivate_resource(dev, SYS_RES_IOPORT, 25489099Sfjoe sc->port_rid, sc->port_res); 25589099Sfjoe bus_release_resource(dev, SYS_RES_IOPORT, 25689099Sfjoe sc->port_rid, sc->port_res); 25789099Sfjoe sc->port_res = 0; 25889099Sfjoe } 25989099Sfjoe if (sc->mem_res) { 26089099Sfjoe bus_deactivate_resource(dev, SYS_RES_MEMORY, 26189099Sfjoe sc->mem_rid, sc->mem_res); 26289099Sfjoe bus_release_resource(dev, SYS_RES_MEMORY, 26389099Sfjoe sc->mem_rid, sc->mem_res); 26489099Sfjoe sc->mem_res = 0; 26589099Sfjoe } 26689099Sfjoe if (sc->irq_res) { 26789099Sfjoe bus_deactivate_resource(dev, SYS_RES_IRQ, 26889099Sfjoe sc->irq_rid, sc->irq_res); 26989099Sfjoe bus_release_resource(dev, SYS_RES_IRQ, 27089099Sfjoe sc->irq_rid, sc->irq_res); 27189099Sfjoe sc->irq_res = 0; 27289099Sfjoe } 27389099Sfjoe} 27489099Sfjoe 27589099Sfjoeint 276121816Sbrookscm_attach(dev) 277121816Sbrooks device_t dev; 27889099Sfjoe{ 279121816Sbrooks struct cm_softc *sc = device_get_softc(dev); 280147256Sbrooks struct ifnet *ifp; 28189099Sfjoe int s; 28289099Sfjoe u_int8_t linkaddress; 28389099Sfjoe 284147256Sbrooks ifp = sc->sc_ifp = if_alloc(IFT_ARCNET); 285147256Sbrooks if (ifp == NULL) { 286147256Sbrooks return (ENOSPC); 287147256Sbrooks } 288147256Sbrooks 28989099Sfjoe s = splhigh(); 29089099Sfjoe 29189099Sfjoe /* 29289099Sfjoe * read the arcnet address from the board 29389099Sfjoe */ 29489099Sfjoe 29589099Sfjoe GETREG(CMRESET); 29689099Sfjoe do { 29789099Sfjoe DELAY(200); 29889099Sfjoe } while (!(GETREG(CMSTAT) & CM_POR)); 29989099Sfjoe 30089099Sfjoe linkaddress = GETMEM(CMMACOFF); 30189099Sfjoe 30289099Sfjoe /* clear the int mask... */ 30389099Sfjoe 30489099Sfjoe sc->sc_intmask = 0; 30589099Sfjoe PUTREG(CMSTAT, 0); 30689099Sfjoe 30789099Sfjoe PUTREG(CMCMD, CM_CONF(CONF_LONG)); 30889099Sfjoe PUTREG(CMCMD, CM_CLR(CLR_POR|CLR_RECONFIG)); 30989099Sfjoe sc->sc_recontime = sc->sc_reconcount = 0; 31089099Sfjoe 31189099Sfjoe /* and reenable kernel int level */ 31289099Sfjoe splx(s); 31389099Sfjoe 31489099Sfjoe /* 31589099Sfjoe * set interface to stopped condition (reset) 31689099Sfjoe */ 31789099Sfjoe cm_stop(sc); 31889099Sfjoe 319121752Sbrooks ifp->if_softc = sc; 320121816Sbrooks if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 321121752Sbrooks ifp->if_output = arc_output; 322121752Sbrooks ifp->if_start = cm_start; 323121752Sbrooks ifp->if_ioctl = cm_ioctl; 324121752Sbrooks ifp->if_watchdog = cm_watchdog; 325121752Sbrooks ifp->if_init = cm_init; 326121752Sbrooks /* XXX IFQ_SET_READY(&ifp->if_snd); */ 327121752Sbrooks ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 328121752Sbrooks ifp->if_timer = 0; 329133678Srwatson ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NEEDSGIANT; 33089099Sfjoe 331121752Sbrooks arc_ifattach(ifp, linkaddress); 33289099Sfjoe 33389099Sfjoe#ifdef CMSOFTCOPY 334121752Sbrooks sc->sc_rxcookie = softintr_establish(IPL_SOFTNET, cm_srint, sc); 335121752Sbrooks sc->sc_txcookie = softintr_establish(IPL_SOFTNET, 336121752Sbrooks (void (*)(void *))cm_start, ifp); 33789099Sfjoe#endif 33889099Sfjoe 33989099Sfjoe#if __FreeBSD_version < 500000 340121752Sbrooks callout_init(&sc->sc_recon_ch); 34189099Sfjoe#else 342121752Sbrooks callout_init(&sc->sc_recon_ch, 0); 34389099Sfjoe#endif 34489099Sfjoe 345109771Sfjoe if_printf(ifp, "link addr 0x%02x (%d)\n", linkaddress, linkaddress); 34689099Sfjoe return 0; 34789099Sfjoe} 34889099Sfjoe 34989099Sfjoe/* 35089099Sfjoe * Initialize device 35189099Sfjoe * 35289099Sfjoe */ 35389099Sfjoevoid 35489099Sfjoecm_init(xsc) 35589099Sfjoe void *xsc; 35689099Sfjoe{ 35789099Sfjoe struct cm_softc *sc = (struct cm_softc *)xsc; 35889099Sfjoe struct ifnet *ifp; 35989099Sfjoe int s; 36089099Sfjoe 361147256Sbrooks ifp = sc->sc_ifp; 36289099Sfjoe 36389099Sfjoe if ((ifp->if_flags & IFF_RUNNING) == 0) { 36489099Sfjoe s = splimp(); 36589099Sfjoe ifp->if_flags |= IFF_RUNNING; 36689099Sfjoe cm_reset(sc); 36789099Sfjoe cm_start(ifp); 36889099Sfjoe splx(s); 36989099Sfjoe } 37089099Sfjoe} 37189099Sfjoe 37289099Sfjoe/* 37389099Sfjoe * Reset the interface... 37489099Sfjoe * 37589099Sfjoe * this assumes that it is called inside a critical section... 37689099Sfjoe * 37789099Sfjoe */ 37889099Sfjoevoid 37989099Sfjoecm_reset(sc) 38089099Sfjoe struct cm_softc *sc; 38189099Sfjoe{ 38289099Sfjoe struct ifnet *ifp; 38389099Sfjoe int linkaddress; 38489099Sfjoe 385147256Sbrooks ifp = sc->sc_ifp; 38689099Sfjoe 38789099Sfjoe#ifdef CM_DEBUG 388104251Sbrooks if_printf(ifp, "reset\n"); 38989099Sfjoe#endif 39089099Sfjoe /* stop and restart hardware */ 39189099Sfjoe 39289099Sfjoe GETREG(CMRESET); 39389099Sfjoe do { 39489099Sfjoe DELAY(200); 39589099Sfjoe } while (!(GETREG(CMSTAT) & CM_POR)); 39689099Sfjoe 39789099Sfjoe linkaddress = GETMEM(CMMACOFF); 39889099Sfjoe 39989099Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 2) 400104251Sbrooks if_printf(ifp, "reset: card reset, link addr = 0x%02x (%d)\n", 401104251Sbrooks linkaddress, linkaddress); 40289099Sfjoe#endif 40389099Sfjoe 40489099Sfjoe /* tell the routing level about the (possibly changed) link address */ 40589099Sfjoe arc_storelladdr(ifp, linkaddress); 40689099Sfjoe arc_frag_init(ifp); 40789099Sfjoe 40889099Sfjoe /* POR is NMI, but we need it below: */ 40989099Sfjoe sc->sc_intmask = CM_RECON|CM_POR; 41089099Sfjoe PUTREG(CMSTAT, sc->sc_intmask); 41189099Sfjoe PUTREG(CMCMD, CM_CONF(CONF_LONG)); 41289099Sfjoe 41389099Sfjoe#ifdef CM_DEBUG 414104251Sbrooks if_printf(ifp, "reset: chip configured, status=0x%02x\n", 415104251Sbrooks GETREG(CMSTAT)); 41689099Sfjoe#endif 41789099Sfjoe PUTREG(CMCMD, CM_CLR(CLR_POR|CLR_RECONFIG)); 41889099Sfjoe 41989099Sfjoe#ifdef CM_DEBUG 420104251Sbrooks if_printf(ifp, "reset: bits cleared, status=0x%02x\n", 421104251Sbrooks GETREG(CMSTAT)); 42289099Sfjoe#endif 42389099Sfjoe 42489099Sfjoe sc->sc_reconcount_excessive = ARC_EXCESSIVE_RECONS; 42589099Sfjoe 42689099Sfjoe /* start receiver */ 42789099Sfjoe 42889099Sfjoe sc->sc_intmask |= CM_RI; 42989099Sfjoe sc->sc_rx_fillcount = 0; 43089099Sfjoe sc->sc_rx_act = 2; 43189099Sfjoe 43289099Sfjoe PUTREG(CMCMD, CM_RXBC(2)); 43389099Sfjoe PUTREG(CMSTAT, sc->sc_intmask); 43489099Sfjoe 43589099Sfjoe#ifdef CM_DEBUG 436104251Sbrooks if_printf(ifp, "reset: started receiver, status=0x%02x\n", 437104251Sbrooks GETREG(CMSTAT)); 43889099Sfjoe#endif 43989099Sfjoe 44089099Sfjoe /* and init transmitter status */ 44189099Sfjoe sc->sc_tx_act = 0; 44289099Sfjoe sc->sc_tx_fillcount = 0; 44389099Sfjoe 44489099Sfjoe ifp->if_flags |= IFF_RUNNING; 44589099Sfjoe ifp->if_flags &= ~IFF_OACTIVE; 44689099Sfjoe 44789099Sfjoe cm_start(ifp); 44889099Sfjoe} 44989099Sfjoe 45089099Sfjoe/* 45189099Sfjoe * Take interface offline 45289099Sfjoe */ 45389099Sfjoevoid 45489099Sfjoecm_stop(sc) 45589099Sfjoe struct cm_softc *sc; 45689099Sfjoe{ 45789099Sfjoe /* Stop the interrupts */ 45889099Sfjoe PUTREG(CMSTAT, 0); 45989099Sfjoe 46089099Sfjoe /* Stop the interface */ 46189099Sfjoe GETREG(CMRESET); 46289099Sfjoe 46389099Sfjoe /* Stop watchdog timer */ 464147256Sbrooks sc->sc_ifp->if_timer = 0; 46589099Sfjoe} 46689099Sfjoe 46789099Sfjoe/* 46889099Sfjoe * Start output on interface. Get another datagram to send 46989099Sfjoe * off the interface queue, and copy it to the 47089099Sfjoe * interface becore starting the output 47189099Sfjoe * 47289099Sfjoe * this assumes that it is called inside a critical section... 47389099Sfjoe * XXX hm... does it still? 47489099Sfjoe * 47589099Sfjoe */ 47689099Sfjoevoid 47789099Sfjoecm_start(ifp) 47889099Sfjoe struct ifnet *ifp; 47989099Sfjoe{ 48089099Sfjoe struct cm_softc *sc = ifp->if_softc; 48189099Sfjoe struct mbuf *m,*mp; 48289099Sfjoe 48389099Sfjoe int cm_ram_ptr; 48489099Sfjoe int len, tlen, offset, s, buffer; 48589099Sfjoe#ifdef CMTIMINGS 48689099Sfjoe u_long copystart, lencopy, perbyte; 48789099Sfjoe#endif 48889099Sfjoe 48989099Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 3) 490104251Sbrooks if_printf(ifp, "start(%p)\n", ifp); 49189099Sfjoe#endif 49289099Sfjoe 49389099Sfjoe if ((ifp->if_flags & IFF_RUNNING) == 0) 49489099Sfjoe return; 49589099Sfjoe 49689099Sfjoe s = splimp(); 49789099Sfjoe 49889099Sfjoe if (sc->sc_tx_fillcount >= 2) { 49989099Sfjoe splx(s); 50089099Sfjoe return; 50189099Sfjoe } 50289099Sfjoe 50389099Sfjoe m = arc_frag_next(ifp); 50489099Sfjoe buffer = sc->sc_tx_act ^ 1; 50589099Sfjoe 50689099Sfjoe splx(s); 50789099Sfjoe 50889099Sfjoe if (m == 0) 50989099Sfjoe return; 51089099Sfjoe 51189099Sfjoe#ifdef CM_DEBUG 51289099Sfjoe if (m->m_len < ARC_HDRLEN) 51389099Sfjoe m = m_pullup(m, ARC_HDRLEN);/* gcc does structure padding */ 514104251Sbrooks if_printf(ifp, "start: filling %d from %d to %d type %d\n", 515104251Sbrooks buffer, mtod(m, u_char *)[0], 51689099Sfjoe mtod(m, u_char *)[1], mtod(m, u_char *)[2]); 51789099Sfjoe#else 51889099Sfjoe if (m->m_len < 2) 51989099Sfjoe m = m_pullup(m, 2); 52089099Sfjoe#endif 521109771Sfjoe cm_ram_ptr = buffer * 512; 52289099Sfjoe 52389099Sfjoe if (m == 0) 52489099Sfjoe return; 52589099Sfjoe 52689099Sfjoe /* write the addresses to RAM and throw them away */ 52789099Sfjoe 52889099Sfjoe /* 52989099Sfjoe * Hardware does this: Yet Another Microsecond Saved. 53089099Sfjoe * (btw, timing code says usually 2 microseconds) 53189099Sfjoe * PUTMEM(cm_ram_ptr + 0, mtod(m, u_char *)[0]); 53289099Sfjoe */ 53389099Sfjoe 53489099Sfjoe PUTMEM(cm_ram_ptr + 1, mtod(m, u_char *)[1]); 53589099Sfjoe m_adj(m, 2); 53689099Sfjoe 53789099Sfjoe /* get total length left at this point */ 53889099Sfjoe tlen = m->m_pkthdr.len; 53989099Sfjoe if (tlen < ARC_MIN_FORBID_LEN) { 54089099Sfjoe offset = 256 - tlen; 54189099Sfjoe PUTMEM(cm_ram_ptr + 2, offset); 54289099Sfjoe } else { 54389099Sfjoe PUTMEM(cm_ram_ptr + 2, 0); 54489099Sfjoe if (tlen <= ARC_MAX_FORBID_LEN) 54589099Sfjoe offset = 255; /* !!! */ 54689099Sfjoe else { 54789099Sfjoe if (tlen > ARC_MAX_LEN) 54889099Sfjoe tlen = ARC_MAX_LEN; 54989099Sfjoe offset = 512 - tlen; 55089099Sfjoe } 55189099Sfjoe PUTMEM(cm_ram_ptr + 3, offset); 55289099Sfjoe 55389099Sfjoe } 55489099Sfjoe cm_ram_ptr += offset; 55589099Sfjoe 55689099Sfjoe /* lets loop through the mbuf chain */ 55789099Sfjoe 55889099Sfjoe for (mp = m; mp; mp = mp->m_next) { 55989099Sfjoe if ((len = mp->m_len)) { /* YAMS */ 56089099Sfjoe bus_space_write_region_1( 56189099Sfjoe rman_get_bustag(sc->mem_res), 56289099Sfjoe rman_get_bushandle(sc->mem_res), 56389099Sfjoe cm_ram_ptr, mtod(mp, caddr_t), len); 56489099Sfjoe 56589099Sfjoe cm_ram_ptr += len; 56689099Sfjoe } 56789099Sfjoe } 56889099Sfjoe 56989099Sfjoe sc->sc_broadcast[buffer] = (m->m_flags & M_BCAST) != 0; 57089099Sfjoe sc->sc_retransmits[buffer] = (m->m_flags & M_BCAST) ? 1 : 5; 57189099Sfjoe 57289099Sfjoe /* actually transmit the packet */ 57389099Sfjoe s = splimp(); 57489099Sfjoe 57589099Sfjoe if (++sc->sc_tx_fillcount > 1) { 57689099Sfjoe /* 57789099Sfjoe * We are filled up to the rim. No more bufs for the moment, 57889099Sfjoe * please. 57989099Sfjoe */ 58089099Sfjoe ifp->if_flags |= IFF_OACTIVE; 58189099Sfjoe } else { 58289099Sfjoe#ifdef CM_DEBUG 583104251Sbrooks if_printf(ifp, "start: starting transmitter on buffer %d\n", 584104251Sbrooks buffer); 58589099Sfjoe#endif 58689099Sfjoe /* Transmitter was off, start it */ 58789099Sfjoe sc->sc_tx_act = buffer; 58889099Sfjoe 58989099Sfjoe /* 59089099Sfjoe * We still can accept another buf, so don't: 59189099Sfjoe * ifp->if_flags |= IFF_OACTIVE; 59289099Sfjoe */ 59389099Sfjoe sc->sc_intmask |= CM_TA; 59489099Sfjoe PUTREG(CMCMD, CM_TX(buffer)); 59589099Sfjoe PUTREG(CMSTAT, sc->sc_intmask); 59689099Sfjoe 597147256Sbrooks ifp->if_timer = ARCTIMEOUT; 59889099Sfjoe } 59989099Sfjoe splx(s); 60089099Sfjoe m_freem(m); 60189099Sfjoe 60289099Sfjoe /* 60389099Sfjoe * After 10 times reading the docs, I realized 60489099Sfjoe * that in the case the receiver NAKs the buffer request, 60589099Sfjoe * the hardware retries till shutdown. 60689099Sfjoe * This is integrated now in the code above. 60789099Sfjoe */ 60889099Sfjoe 60989099Sfjoe return; 61089099Sfjoe} 61189099Sfjoe 61289099Sfjoe/* 61389099Sfjoe * Arcnet interface receiver soft interrupt: 61489099Sfjoe * get the stuff out of any filled buffer we find. 61589099Sfjoe */ 61689099Sfjoevoid 61789099Sfjoecm_srint(vsc) 61889099Sfjoe void *vsc; 61989099Sfjoe{ 62089099Sfjoe struct cm_softc *sc = (struct cm_softc *)vsc; 62189099Sfjoe int buffer, len, offset, s, type; 62289099Sfjoe int cm_ram_ptr; 62389099Sfjoe struct mbuf *m; 62489099Sfjoe struct arc_header *ah; 62589099Sfjoe struct ifnet *ifp; 62689099Sfjoe 627147256Sbrooks ifp = sc->sc_ifp; 62889099Sfjoe 62989099Sfjoe s = splimp(); 63089099Sfjoe buffer = sc->sc_rx_act ^ 1; 63189099Sfjoe splx(s); 63289099Sfjoe 63389099Sfjoe /* Allocate header mbuf */ 634111119Simp MGETHDR(m, M_DONTWAIT, MT_DATA); 63589099Sfjoe 63689099Sfjoe if (m == 0) { 63789099Sfjoe /* 63889099Sfjoe * in case s.th. goes wrong with mem, drop it 63989099Sfjoe * to make sure the receiver can be started again 64089099Sfjoe * count it as input error (we dont have any other 64189099Sfjoe * detectable) 64289099Sfjoe */ 64389099Sfjoe ifp->if_ierrors++; 64489099Sfjoe goto cleanup; 64589099Sfjoe } 64689099Sfjoe 64789099Sfjoe m->m_pkthdr.rcvif = ifp; 64889099Sfjoe 64989099Sfjoe /* 65089099Sfjoe * Align so that IP packet will be longword aligned. Here we 65189099Sfjoe * assume that m_data of new packet is longword aligned. 65289099Sfjoe * When implementing PHDS, we might have to change it to 2, 65389099Sfjoe * (2*sizeof(ulong) - CM_HDRNEWLEN)), packet type dependent. 65489099Sfjoe */ 65589099Sfjoe 656109771Sfjoe cm_ram_ptr = buffer * 512; 65789099Sfjoe offset = GETMEM(cm_ram_ptr + 2); 65889099Sfjoe if (offset) 65989099Sfjoe len = 256 - offset; 66089099Sfjoe else { 66189099Sfjoe offset = GETMEM(cm_ram_ptr + 3); 66289099Sfjoe len = 512 - offset; 66389099Sfjoe } 66489099Sfjoe 66589099Sfjoe /* 66689099Sfjoe * first +2 bytes for align fixup below 66789099Sfjoe * second +2 bytes are for src/dst addresses 66889099Sfjoe */ 66989099Sfjoe if ((len + 2 + 2) > MHLEN) { 67089099Sfjoe /* attach an mbuf cluster */ 671111119Simp MCLGET(m, M_DONTWAIT); 67289099Sfjoe 67389099Sfjoe /* Insist on getting a cluster */ 67489099Sfjoe if ((m->m_flags & M_EXT) == 0) { 67589099Sfjoe ifp->if_ierrors++; 67689099Sfjoe goto cleanup; 67789099Sfjoe } 67889099Sfjoe } 67989099Sfjoe 68089099Sfjoe if (m == 0) { 68189099Sfjoe ifp->if_ierrors++; 68289099Sfjoe goto cleanup; 68389099Sfjoe } 68489099Sfjoe 68589099Sfjoe type = GETMEM(cm_ram_ptr + offset); 68689099Sfjoe m->m_data += 1 + arc_isphds(type); 68789099Sfjoe /* mbuf filled with ARCnet addresses */ 68889099Sfjoe m->m_pkthdr.len = m->m_len = len + 2; 68989099Sfjoe 69089099Sfjoe ah = mtod(m, struct arc_header *); 69189099Sfjoe ah->arc_shost = GETMEM(cm_ram_ptr + 0); 69289099Sfjoe ah->arc_dhost = GETMEM(cm_ram_ptr + 1); 69389099Sfjoe 69489099Sfjoe bus_space_read_region_1( 69589099Sfjoe rman_get_bustag(sc->mem_res), rman_get_bushandle(sc->mem_res), 69689099Sfjoe cm_ram_ptr + offset, mtod(m, u_char *) + 2, len); 69789099Sfjoe 69889099Sfjoe arc_input(ifp, m); 69989099Sfjoe 70089099Sfjoe m = NULL; 70189099Sfjoe ifp->if_ipackets++; 70289099Sfjoe 70389099Sfjoecleanup: 70489099Sfjoe 70589099Sfjoe if (m != NULL) 70689099Sfjoe m_freem(m); 70789099Sfjoe 70889099Sfjoe /* mark buffer as invalid by source id 0 */ 70989099Sfjoe PUTMEM(buffer << 9, 0); 71089099Sfjoe s = splimp(); 71189099Sfjoe 71289099Sfjoe if (--sc->sc_rx_fillcount == 2 - 1) { 71389099Sfjoe 71489099Sfjoe /* was off, restart it on buffer just emptied */ 71589099Sfjoe sc->sc_rx_act = buffer; 71689099Sfjoe sc->sc_intmask |= CM_RI; 71789099Sfjoe 71889099Sfjoe /* this also clears the RI flag interupt: */ 71989099Sfjoe PUTREG(CMCMD, CM_RXBC(buffer)); 72089099Sfjoe PUTREG(CMSTAT, sc->sc_intmask); 72189099Sfjoe 72289099Sfjoe#ifdef CM_DEBUG 723104251Sbrooks if_printf(ifp, "srint: restarted rx on buf %d\n", buffer); 72489099Sfjoe#endif 72589099Sfjoe } 72689099Sfjoe splx(s); 72789099Sfjoe} 72889099Sfjoe 72989099Sfjoe__inline static void 73089099Sfjoecm_tint(sc, isr) 73189099Sfjoe struct cm_softc *sc; 73289099Sfjoe int isr; 73389099Sfjoe{ 73489099Sfjoe struct ifnet *ifp; 73589099Sfjoe 73689099Sfjoe int buffer; 73789099Sfjoe#ifdef CMTIMINGS 73889099Sfjoe int clknow; 73989099Sfjoe#endif 74089099Sfjoe 741147256Sbrooks ifp = sc->sc_ifp; 74289099Sfjoe buffer = sc->sc_tx_act; 74389099Sfjoe 74489099Sfjoe /* 74589099Sfjoe * retransmit code: 74689099Sfjoe * Normal situtations first for fast path: 74789099Sfjoe * If acknowledgement received ok or broadcast, we're ok. 74889099Sfjoe * else if 74989099Sfjoe */ 75089099Sfjoe 75189099Sfjoe if (isr & CM_TMA || sc->sc_broadcast[buffer]) 752147256Sbrooks ifp->if_opackets++; 75389099Sfjoe#ifdef CMRETRANSMIT 75489099Sfjoe else if (ifp->if_flags & IFF_LINK2 && ifp->if_timer > 0 75589099Sfjoe && --sc->sc_retransmits[buffer] > 0) { 75689099Sfjoe /* retransmit same buffer */ 75789099Sfjoe PUTREG(CMCMD, CM_TX(buffer)); 75889099Sfjoe return; 75989099Sfjoe } 76089099Sfjoe#endif 76189099Sfjoe else 76289099Sfjoe ifp->if_oerrors++; 76389099Sfjoe 76489099Sfjoe 76589099Sfjoe /* We know we can accept another buffer at this point. */ 76689099Sfjoe ifp->if_flags &= ~IFF_OACTIVE; 76789099Sfjoe 76889099Sfjoe if (--sc->sc_tx_fillcount > 0) { 76989099Sfjoe 77089099Sfjoe /* 77189099Sfjoe * start tx on other buffer. 77289099Sfjoe * This also clears the int flag 77389099Sfjoe */ 77489099Sfjoe buffer ^= 1; 77589099Sfjoe sc->sc_tx_act = buffer; 77689099Sfjoe 77789099Sfjoe /* 77889099Sfjoe * already given: 77989099Sfjoe * sc->sc_intmask |= CM_TA; 78089099Sfjoe * PUTREG(CMSTAT, sc->sc_intmask); 78189099Sfjoe */ 78289099Sfjoe PUTREG(CMCMD, CM_TX(buffer)); 78389099Sfjoe /* init watchdog timer */ 78489099Sfjoe ifp->if_timer = ARCTIMEOUT; 78589099Sfjoe 78689099Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 1) 787104251Sbrooks if_printf(ifp, 788104251Sbrooks "tint: starting tx on buffer %d, status 0x%02x\n", 789104251Sbrooks buffer, GETREG(CMSTAT)); 79089099Sfjoe#endif 79189099Sfjoe } else { 79289099Sfjoe /* have to disable TX interrupt */ 79389099Sfjoe sc->sc_intmask &= ~CM_TA; 79489099Sfjoe PUTREG(CMSTAT, sc->sc_intmask); 79589099Sfjoe /* ... and watchdog timer */ 79689099Sfjoe ifp->if_timer = 0; 79789099Sfjoe 79889099Sfjoe#ifdef CM_DEBUG 799104251Sbrooks if_printf(ifp, "tint: no more buffers to send, status 0x%02x\n", 800104251Sbrooks GETREG(CMSTAT)); 80189099Sfjoe#endif 80289099Sfjoe } 80389099Sfjoe 80489099Sfjoe /* XXXX TODO */ 80589099Sfjoe#ifdef CMSOFTCOPY 80689099Sfjoe /* schedule soft int to fill a new buffer for us */ 80789099Sfjoe softintr_schedule(sc->sc_txcookie); 80889099Sfjoe#else 80989099Sfjoe /* call it directly */ 81089099Sfjoe cm_start(ifp); 81189099Sfjoe#endif 81289099Sfjoe} 81389099Sfjoe 81489099Sfjoe/* 81589099Sfjoe * Our interrupt routine 81689099Sfjoe */ 81789099Sfjoevoid 81889099Sfjoecmintr(arg) 81989099Sfjoe void *arg; 82089099Sfjoe{ 82189099Sfjoe struct cm_softc *sc = arg; 822147256Sbrooks struct ifnet *ifp = sc->sc_ifp; 82389099Sfjoe 82489099Sfjoe u_char isr, maskedisr; 82589099Sfjoe int buffer; 82689099Sfjoe u_long newsec; 82789099Sfjoe 82889099Sfjoe isr = GETREG(CMSTAT); 82989099Sfjoe maskedisr = isr & sc->sc_intmask; 83089099Sfjoe if (!maskedisr) 83189099Sfjoe return; 83289099Sfjoe do { 83389099Sfjoe 834109771Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 1) 835104251Sbrooks if_printf(ifp, "intr: status 0x%02x, intmask 0x%02x\n", 836104251Sbrooks isr, sc->sc_intmask); 83789099Sfjoe#endif 83889099Sfjoe 83989099Sfjoe if (maskedisr & CM_POR) { 84089099Sfjoe /* 84189099Sfjoe * XXX We should never see this. Don't bother to store 84289099Sfjoe * the address. 843147256Sbrooks * sc->sc_ifp->if_l2com->ac_anaddr = GETMEM(CMMACOFF); 84489099Sfjoe */ 84589099Sfjoe PUTREG(CMCMD, CM_CLR(CLR_POR)); 84689099Sfjoe log(LOG_WARNING, 847121816Sbrooks "%s: intr: got spurious power on reset int\n", 848121816Sbrooks ifp->if_xname); 84989099Sfjoe } 85089099Sfjoe 85189099Sfjoe if (maskedisr & CM_RECON) { 85289099Sfjoe /* 85389099Sfjoe * we dont need to: 85489099Sfjoe * PUTREG(CMCMD, CM_CONF(CONF_LONG)); 85589099Sfjoe */ 85689099Sfjoe PUTREG(CMCMD, CM_CLR(CLR_RECONFIG)); 857147256Sbrooks ifp->if_collisions++; 85889099Sfjoe 85989099Sfjoe /* 86089099Sfjoe * If less than 2 seconds per reconfig: 86189099Sfjoe * If ARC_EXCESSIVE_RECONFIGS 86289099Sfjoe * since last burst, complain and set treshold for 86389099Sfjoe * warnings to ARC_EXCESSIVE_RECONS_REWARN. 86489099Sfjoe * 86589099Sfjoe * This allows for, e.g., new stations on the cable, or 86689099Sfjoe * cable switching as long as it is over after 86789099Sfjoe * (normally) 16 seconds. 86889099Sfjoe * 86989099Sfjoe * XXX TODO: check timeout bits in status word and 87089099Sfjoe * double time if necessary. 87189099Sfjoe */ 87289099Sfjoe 87389099Sfjoe callout_stop(&sc->sc_recon_ch); 87489099Sfjoe newsec = time_second; 87589099Sfjoe if ((newsec - sc->sc_recontime <= 2) && 87689099Sfjoe (++sc->sc_reconcount == ARC_EXCESSIVE_RECONS)) { 87789099Sfjoe log(LOG_WARNING, 878121816Sbrooks "%s: excessive token losses, " 87989099Sfjoe "cable problem?\n", 880121816Sbrooks ifp->if_xname); 88189099Sfjoe } 88289099Sfjoe sc->sc_recontime = newsec; 88389099Sfjoe callout_reset(&sc->sc_recon_ch, 15 * hz, 88489099Sfjoe cm_reconwatch, (void *)sc); 88589099Sfjoe } 88689099Sfjoe 88789099Sfjoe if (maskedisr & CM_RI) { 88889099Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 1) 889104251Sbrooks if_printf(ifp, "intr: hard rint, act %d\n", 890104251Sbrooks sc->sc_rx_act); 89189099Sfjoe#endif 89289099Sfjoe 89389099Sfjoe buffer = sc->sc_rx_act; 89489099Sfjoe /* look if buffer is marked invalid: */ 895109771Sfjoe if (GETMEM(buffer * 512) == 0) { 89689099Sfjoe /* 89789099Sfjoe * invalid marked buffer (or illegally 89889099Sfjoe * configured sender) 89989099Sfjoe */ 90089099Sfjoe log(LOG_WARNING, 901121816Sbrooks "%s: spurious RX interupt or sender 0 " 902121816Sbrooks " (ignored)\n", ifp->if_xname); 90389099Sfjoe /* 90489099Sfjoe * restart receiver on same buffer. 90589099Sfjoe * XXX maybe better reset interface? 90689099Sfjoe */ 90789099Sfjoe PUTREG(CMCMD, CM_RXBC(buffer)); 90889099Sfjoe } else { 90989099Sfjoe if (++sc->sc_rx_fillcount > 1) { 91089099Sfjoe sc->sc_intmask &= ~CM_RI; 91189099Sfjoe PUTREG(CMSTAT, sc->sc_intmask); 91289099Sfjoe } else { 91389099Sfjoe buffer ^= 1; 91489099Sfjoe sc->sc_rx_act = buffer; 91589099Sfjoe 91689099Sfjoe /* 91789099Sfjoe * Start receiver on other receive 91889099Sfjoe * buffer. This also clears the RI 91989099Sfjoe * interupt flag. 92089099Sfjoe */ 92189099Sfjoe PUTREG(CMCMD, CM_RXBC(buffer)); 92289099Sfjoe /* in RX intr, so mask is ok for RX */ 92389099Sfjoe 92489099Sfjoe#ifdef CM_DEBUG 925104251Sbrooks if_printf(ifp, "strt rx for buf %d, " 92689099Sfjoe "stat 0x%02x\n", 92789099Sfjoe sc->sc_rx_act, GETREG(CMSTAT)); 92889099Sfjoe#endif 92989099Sfjoe } 93089099Sfjoe 93189099Sfjoe#ifdef CMSOFTCOPY 93289099Sfjoe /* 93389099Sfjoe * this one starts a soft int to copy out 93489099Sfjoe * of the hw 93589099Sfjoe */ 93689099Sfjoe softintr_schedule(sc->sc_rxcookie); 93789099Sfjoe#else 93889099Sfjoe /* this one does the copy here */ 93989099Sfjoe cm_srint(sc); 94089099Sfjoe#endif 94189099Sfjoe } 94289099Sfjoe } 94389099Sfjoe if (maskedisr & CM_TA) { 94489099Sfjoe cm_tint(sc, isr); 94589099Sfjoe } 94689099Sfjoe isr = GETREG(CMSTAT); 94789099Sfjoe maskedisr = isr & sc->sc_intmask; 94889099Sfjoe } while (maskedisr); 949109771Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 1) 950104251Sbrooks if_printf(ifp, "intr (exit): status 0x%02x, intmask 0x%02x\n", 951104251Sbrooks isr, sc->sc_intmask); 95289099Sfjoe#endif 95389099Sfjoe} 95489099Sfjoe 95589099Sfjoevoid 95689099Sfjoecm_reconwatch(arg) 95789099Sfjoe void *arg; 95889099Sfjoe{ 95989099Sfjoe struct cm_softc *sc = arg; 960147256Sbrooks struct ifnet *ifp = sc->sc_ifp; 96189099Sfjoe 96289099Sfjoe if (sc->sc_reconcount >= ARC_EXCESSIVE_RECONS) { 96389099Sfjoe sc->sc_reconcount = 0; 964121816Sbrooks log(LOG_WARNING, "%s: token valid again.\n", 965121816Sbrooks ifp->if_xname); 96689099Sfjoe } 96789099Sfjoe sc->sc_reconcount = 0; 96889099Sfjoe} 96989099Sfjoe 97089099Sfjoe 97189099Sfjoe/* 97289099Sfjoe * Process an ioctl request. 97389099Sfjoe * This code needs some work - it looks pretty ugly. 97489099Sfjoe */ 97589099Sfjoeint 97689099Sfjoecm_ioctl(ifp, command, data) 97789099Sfjoe struct ifnet *ifp; 97889099Sfjoe u_long command; 97989099Sfjoe caddr_t data; 98089099Sfjoe{ 98189099Sfjoe struct cm_softc *sc; 98289099Sfjoe struct ifaddr *ifa; 98389099Sfjoe struct ifreq *ifr; 98489099Sfjoe int s, error; 98589099Sfjoe 98689099Sfjoe error = 0; 98789099Sfjoe sc = ifp->if_softc; 98889099Sfjoe ifa = (struct ifaddr *)data; 98989099Sfjoe ifr = (struct ifreq *)data; 99089099Sfjoe s = splimp(); 99189099Sfjoe 99289099Sfjoe#if defined(CM_DEBUG) && (CM_DEBUG > 2) 993104251Sbrooks if_printf(ifp, "ioctl() called, cmd = 0x%lx\n", command); 99489099Sfjoe#endif 99589099Sfjoe 99689099Sfjoe switch (command) { 99789099Sfjoe case SIOCSIFADDR: 998109771Sfjoe case SIOCGIFADDR: 99989099Sfjoe case SIOCADDMULTI: 100089099Sfjoe case SIOCDELMULTI: 100189099Sfjoe case SIOCSIFMTU: 100289099Sfjoe error = arc_ioctl(ifp, command, data); 100389099Sfjoe break; 100489099Sfjoe 100589099Sfjoe case SIOCSIFFLAGS: 100689099Sfjoe if ((ifp->if_flags & IFF_UP) == 0 && 100789099Sfjoe (ifp->if_flags & IFF_RUNNING) != 0) { 100889099Sfjoe /* 100989099Sfjoe * If interface is marked down and it is running, 101089099Sfjoe * then stop it. 101189099Sfjoe */ 101289099Sfjoe cm_stop(sc); 101389099Sfjoe ifp->if_flags &= ~IFF_RUNNING; 101489099Sfjoe } else if ((ifp->if_flags & IFF_UP) != 0 && 101589099Sfjoe (ifp->if_flags & IFF_RUNNING) == 0) { 101689099Sfjoe /* 101789099Sfjoe * If interface is marked up and it is stopped, then 101889099Sfjoe * start it. 101989099Sfjoe */ 102089099Sfjoe cm_init(sc); 102189099Sfjoe } 102289099Sfjoe break; 102389099Sfjoe 102489099Sfjoe default: 102589099Sfjoe error = EINVAL; 102689099Sfjoe break; 102789099Sfjoe } 102889099Sfjoe 102989099Sfjoe splx(s); 103089099Sfjoe return (error); 103189099Sfjoe} 103289099Sfjoe 103389099Sfjoe/* 103489099Sfjoe * watchdog routine for transmitter. 103589099Sfjoe * 103689099Sfjoe * We need this, because else a receiver whose hardware is alive, but whose 103789099Sfjoe * software has not enabled the Receiver, would make our hardware wait forever 103889099Sfjoe * Discovered this after 20 times reading the docs. 103989099Sfjoe * 1040108470Sschweikh * Only thing we do is disable transmitter. We'll get a transmit timeout, 104189099Sfjoe * and the int handler will have to decide not to retransmit (in case 104289099Sfjoe * retransmission is implemented). 104389099Sfjoe * 104489099Sfjoe * This one assumes being called inside splimp() 104589099Sfjoe */ 104689099Sfjoe 104789099Sfjoevoid 104889099Sfjoecm_watchdog(ifp) 104989099Sfjoe struct ifnet *ifp; 105089099Sfjoe{ 105189099Sfjoe struct cm_softc *sc = ifp->if_softc; 105289099Sfjoe 105389099Sfjoe PUTREG(CMCMD, CM_TXDIS); 105489099Sfjoe return; 105589099Sfjoe} 1056