root/dev/isa/if_ep_isa.c

DEFINITIONS

1. LIST_HEAD
2. epaddcard
3. ep_isa_probe
4. ep_isa_attach

    1 /*      $OpenBSD: if_ep_isa.c,v 1.24 2006/06/17 17:57:00 brad Exp $     */
    2 /*      $NetBSD: if_ep_isa.c,v 1.5 1996/05/12 23:52:36 mycroft Exp $    */
    4 /*
    5  * Copyright (c) 1996 Jason R. Thorpe <thorpej@beer.org>
    6  * Copyright (c) 1994 Herb Peyerl <hpeyerl@beer.org>
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed by Herb Peyerl.
   20  * 4. The name of Herb Peyerl may not be used to endorse or promote products
   21  *    derived from this software without specific prior written permission.
   22  *
   23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   33  *
   34  * Note: Most of the code here was written by Theo de Raadt originally,
   35  * ie. all the mechanics of probing for all cards on first call and then
   36  * searching for matching devices on subsequent calls.
   37  */
   39 #include "bpfilter.h"
   41 #include <sys/param.h>
   42 #include <sys/systm.h>
   43 #include <sys/mbuf.h>
   44 #include <sys/socket.h>
   45 #include <sys/ioctl.h>
   46 #include <sys/errno.h>
   47 #include <sys/syslog.h>
   48 #include <sys/selinfo.h>
   49 #include <sys/timeout.h>
   50 #include <sys/device.h>
   51 #include <sys/queue.h>
   53 #include <net/if.h>
   54 #include <net/if_dl.h>
   55 #include <net/if_types.h>
   56 #include <net/netisr.h>
   57 #include <net/if_media.h>
   59 #ifdef INET
   60 #include <netinet/in.h>
   61 #include <netinet/in_systm.h>
   62 #include <netinet/in_var.h>
   63 #include <netinet/ip.h>
   64 #include <netinet/if_ether.h>
   65 #endif
   67 #if NBPFILTER > 0
   68 #include <net/bpf.h>
   69 #endif
   71 #include <machine/cpu.h>
   72 #include <machine/bus.h>
   73 #include <machine/intr.h>
   75 #include <dev/mii/mii.h>
   76 #include <dev/mii/miivar.h>
   78 #include <dev/ic/elink3var.h>
   79 #include <dev/ic/elink3reg.h>
   81 #include <dev/isa/isavar.h>
   82 #include <dev/isa/elink.h>
   84 int ep_isa_probe(struct device *, void *, void *);
   85 void ep_isa_attach(struct device *, struct device *, void *);
   87 struct cfattach ep_isa_ca = {
   88         sizeof(struct ep_softc), ep_isa_probe, ep_isa_attach
   89 };
   91 static  void epaddcard(int, int, int, u_short);
   93 /*
   94  * This keeps track of which ISAs have been through an ep probe sequence.
   95  * A simple static variable isn't enough, since it's conceivable that
   96  * a system might have more than one ISA bus.
   97  *
   98  * The "er_bus" member is the unit number of the parent ISA bus, e.g. "0"
   99  * for "isa0".
  100  */
  101 struct ep_isa_done_probe {
LIST_ENTRY(ep_isa_done_probe)   er_link;
  103         int                             er_bus;
  104 };
  105 static LIST_HEAD(, ep_isa_done_probe) ep_isa_all_probes;
  106 static int ep_isa_probes_initialized;
  108 #define MAXEPCARDS      20      /* if you have more than 20, you lose */
  110 static struct epcard {
  111         int     bus;
  112         int     iobase;
  113         int     irq;
  114         char    available;
u_short model;
  116 } epcards[MAXEPCARDS];
  117 static int nepcards;
  119 static void
epaddcard(bus, iobase, irq, model)
  121         int bus, iobase, irq;
u_short model;
  123 {
  125         if (nepcards >= MAXEPCARDS)
  126                 return;
epcards[nepcards].bus = bus;
epcards[nepcards].iobase = iobase;
epcards[nepcards].irq = (irq == 2) ? 9 : irq;
epcards[nepcards].available = 1;
epcards[nepcards].model = model;
nepcards++;
  133 }
  135 /*
  136  * 3c509 cards on the ISA bus are probed in ethernet address order.
  137  * The probe sequence requires careful orchestration, and we'd like
  138  * like to allow the irq and base address to be wildcarded. So, we
  139  * probe all the cards the first time epprobe() is called. On subsequent
  140  * calls we look for matching cards.
  141  */
  142 int
ep_isa_probe(parent, match, aux)
  144         struct device *parent;
  145         void *match, *aux;
  146 {
  147         struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
  150         int slot, iobase, irq, i, pnp;
u_int16_t vendor, model;
  152         struct ep_isa_done_probe *er;
  153         int bus = parent->dv_unit;
  155         if (ep_isa_probes_initialized == 0) {
LIST_INIT(&ep_isa_all_probes);
ep_isa_probes_initialized = 1;
  158         }
  160         /*
  161          * Probe this bus if we haven't done so already.
  162          */
LIST_FOREACH(er, &ep_isa_all_probes, er_link)
  164                 if (er->er_bus == parent->dv_unit)
  165                         goto bus_probed;
  167         /*
  168          * Mark this bus so we don't probe it again.
  169          */
er = (struct ep_isa_done_probe *)
malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_NOWAIT);
  172         if (er == NULL)
panic("ep_isa_probe: can't allocate state storage");
er->er_bus = bus;
LIST_INSERT_HEAD(&ep_isa_all_probes, er, er_link);
  178         /*
  179          * Map the Etherlink ID port for the probe sequence.
  180          */
  181         if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) {
printf("ep_isa_probe: can't map Etherlink ID port\n");
  183                 return 0;
  184         }
  186         for (slot = 0; slot < MAXEPCARDS; slot++) {
elink_reset(iot, ioh, parent->dv_unit);
elink_idseq(iot, ioh, ELINK_509_POLY);
  190                 /* Untag all the adapters so they will talk to us. */
  191                 if (slot == 0)
bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0);
vendor = htons(epreadeeprom(iot, ioh, EEPROM_MFG_ID));
  195                 if (vendor != MFG_ID)
  196                         continue;
model = htons(epreadeeprom(iot, ioh, EEPROM_PROD_ID));
  199                 if ((model & 0xfff0) != PROD_ID_3C509) {
  200 #ifndef trusted
printf("ep_isa_probe: ignoring model %04x\n",
model);
  203 #endif
  204                         continue;
  205                 }
iobase = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG);
iobase = (iobase & 0x1f) * 0x10 + 0x200;
irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG);
irq >>= 12;
pnp = epreadeeprom(iot, ioh, EEPROM_PNP) & 8;
  215                 /* so card will not respond to contention again */
bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1);
  218                 if ((model & 0xfff0) == PROD_ID_3C509 && pnp != 0)
  219                         continue;
  221                 /*
  222                  * XXX: this should probably not be done here
  223                  * because it enables the drq/irq lines from
  224                  * the board. Perhaps it should be done after
  225                  * we have checked for irq/drq collisions?
  226                  */
bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG);
epaddcard(bus, iobase, irq, model);
  229         }
  230         /* XXX should we sort by ethernet address? */
bus_space_unmap(iot, ioh, 1);
bus_probed:
  236         for (i = 0; i < nepcards; i++) {
  237                 if (epcards[i].bus != bus)
  238                         continue;
  239                 if (epcards[i].available == 0)
  240                         continue;
  241                 if (ia->ia_iobase != IOBASEUNK &&
ia->ia_iobase != epcards[i].iobase)
  243                         continue;
  244                 if (ia->ia_irq != IRQUNK &&
ia->ia_irq != epcards[i].irq)
  246                         continue;
  247                 goto good;
  248         }
  249         return 0;
good:
epcards[i].available = 0;
ia->ia_iobase = epcards[i].iobase;
ia->ia_irq = epcards[i].irq;
ia->ia_iosize = 0x10;
ia->ia_msize = 0;
ia->ia_aux = (void *)(long)(epcards[i].model);
  258         return 1;
  259 }
  261 void
ep_isa_attach(parent, self, aux)
  263         struct device *parent, *self;
  264         void *aux;
  265 {
  266         struct ep_softc *sc = (void *)self;
  267         struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
  270         int chipset;
  272         /* Map i/o space. */
  273         if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh))
panic("ep_isa_attach: can't map i/o space");
sc->sc_iot = iot;
sc->sc_ioh = ioh;
sc->bustype = EP_BUS_ISA;
printf(":");
chipset = (int)(long)ia->ia_aux;
  283         if ((chipset & 0xfff0) == PROD_ID_3C509) {
epconfig(sc, EP_CHIPSET_3C509, NULL);
  285         } else {
  286                 /*
  287                  * XXX: Maybe a 3c515, but the check in ep_isa_probe looks
  288                  * at the moment only for a 3c509.
  289                  */
epconfig(sc, EP_CHIPSET_UNKNOWN, NULL);
  291         }
sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
IPL_NET, epintr, sc, sc->sc_dev.dv_xname);
  295 }