NetBSD/sys/dev/isa/if_ep_isa.c

357 lines
10 KiB
C

/* $NetBSD: if_ep_isa.c,v 1.23 1998/08/12 18:51:54 thorpej Exp $ */
/*-
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1997 Jonathan Stone <jonathan@NetBSD.org>
* Copyright (c) 1994 Herb Peyerl <hpeyerl@beer.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Herb Peyerl.
* 4. The name of Herb Peyerl may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include "opt_inet.h"
#include "opt_ns.h"
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <sys/select.h>
#include <sys/device.h>
#include <sys/queue.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_inarp.h>
#endif
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/mii/miivar.h>
#include <dev/ic/elink3var.h>
#include <dev/ic/elink3reg.h>
#include <dev/isa/isavar.h>
#include <dev/isa/elink.h>
int ep_isa_probe __P((struct device *, struct cfdata *, void *));
void ep_isa_attach __P((struct device *, struct device *, void *));
struct cfattach ep_isa_ca = {
sizeof(struct ep_softc), ep_isa_probe, ep_isa_attach
};
static void epaddcard __P((int, int, int, int));
/*
* This keeps track of which ISAs have been through an ep probe sequence.
* A simple static variable isn't enough, since it's conceivable that
* a system might have more than one ISA bus.
*
* The "er_bus" member is the unit number of the parent ISA bus, e.g. "0"
* for "isa0".
*/
struct ep_isa_done_probe {
LIST_ENTRY(ep_isa_done_probe) er_link;
int er_bus;
};
static LIST_HEAD(, ep_isa_done_probe) ep_isa_all_probes;
static int ep_isa_probes_initialized;
#define MAXEPCARDS 20 /* if you have more than 20, you lose */
static struct epcard {
int bus;
int iobase;
int irq;
char available;
long model;
} epcards[MAXEPCARDS];
static int nepcards;
static void
epaddcard(bus, iobase, irq, model)
int bus, iobase, irq, model;
{
if (nepcards >= MAXEPCARDS)
return;
epcards[nepcards].bus = bus;
epcards[nepcards].iobase = iobase;
epcards[nepcards].irq = (irq == 2) ? 9 : irq;
epcards[nepcards].model = model;
epcards[nepcards].available = 1;
nepcards++;
}
/*
* 3c509 cards on the ISA bus are probed in ethernet address order.
* The probe sequence requires careful orchestration, and we'd like
* like to allow the irq and base address to be wildcarded. So, we
* probe all the cards the first time epprobe() is called. On subsequent
* calls we look for matching cards.
*/
int
ep_isa_probe(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh, ioh2;
int slot, iobase, irq, i;
u_int16_t vendor, model;
struct ep_isa_done_probe *er;
int bus = parent->dv_unit;
if (ep_isa_probes_initialized == 0) {
LIST_INIT(&ep_isa_all_probes);
ep_isa_probes_initialized = 1;
}
/*
* Probe this bus if we haven't done so already.
*/
for (er = ep_isa_all_probes.lh_first; er != NULL;
er = er->er_link.le_next)
if (er->er_bus == parent->dv_unit)
goto bus_probed;
/*
* Mark this bus so we don't probe it again.
*/
er = (struct ep_isa_done_probe *)
malloc(sizeof(struct ep_isa_done_probe), M_DEVBUF, M_NOWAIT);
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);
/*
* Map the Etherlink ID port for the probe sequence.
*/
if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) {
printf("ep_isa_probe: can't map Etherlink ID port\n");
return 0;
}
for (slot = 0; slot < MAXEPCARDS; slot++) {
elink_reset(iot, ioh, parent->dv_unit);
elink_idseq(iot, ioh, ELINK_509_POLY);
/* Untag all the adapters so they will talk to us. */
if (slot == 0)
bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 0);
vendor = htons(epreadeeprom(iot, ioh, EEPROM_MFG_ID));
if (vendor != MFG_ID)
continue;
model = htons(epreadeeprom(iot, ioh, EEPROM_PROD_ID));
/*
* XXX: Add a new product id to check for other cards
* (3c515?) and fix the check in ep_isa_attach.
*/
if ((model & 0xfff0) != PROD_ID_3C509) {
#ifndef trusted
printf(
"ep_isa_probe: ignoring model %04x\n", model);
#endif
continue;
}
iobase = epreadeeprom(iot, ioh, EEPROM_ADDR_CFG);
iobase = (iobase & 0x1f) * 0x10 + 0x200;
irq = epreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG);
irq >>= 12;
/* so card will not respond to contention again */
bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1);
/*
* XXX: this should probably not be done here
* because it enables the drq/irq lines from
* the board. Perhaps it should be done after
* we have checked for irq/drq collisions?
*/
bus_space_write_1(iot, ioh, 0, ACTIVATE_ADAPTER_TO_CONFIG);
/*
* Don't attach a 3c509 in PnP mode.
*/
if ((model & 0xfff0) == PROD_ID_3C509) {
if (bus_space_map(iot, iobase, 1, 0, &ioh2)) {
printf(
"ep_isa_probe: can't map Etherlink iobase\n");
return 0;
}
if (bus_space_read_2(iot, ioh2, EP_W0_EEPROM_COMMAND)
& EEPROM_TST_MODE) {
printf(
"3COM 3C509 Ethernet card in PnP mode\n");
continue;
}
bus_space_unmap(iot, ioh2, 1);
}
epaddcard(bus, iobase, irq, model);
}
/* XXX should we sort by ethernet address? */
bus_space_unmap(iot, ioh, 1);
bus_probed:
for (i = 0; i < nepcards; i++) {
if (epcards[i].bus != bus)
continue;
if (epcards[i].available == 0)
continue;
if (ia->ia_iobase != IOBASEUNK &&
ia->ia_iobase != epcards[i].iobase)
continue;
if (ia->ia_irq != IRQUNK &&
ia->ia_irq != epcards[i].irq)
continue;
goto good;
}
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 *)epcards[i].model;
return 1;
}
void
ep_isa_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct ep_softc *sc = (void *)self;
struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
int chipset;
/* Map i/o space. */
if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) {
printf(": can't map i/o space\n");
return;
}
sc->sc_iot = iot;
sc->sc_ioh = ioh;
sc->bustype = EP_BUS_ISA;
sc->enable = NULL;
sc->disable = NULL;
sc->enabled = 1;
chipset = (int)(long)ia->ia_aux;
if ((chipset & 0xfff0) == PROD_ID_3C509) {
printf(": 3Com 3C509 Ethernet\n");
epconfig(sc, EP_CHIPSET_3C509, NULL);
} else {
/*
* XXX: Maybe a 3c515, but the check in ep_isa_probe looks
* at the moment only for a 3c509.
*/
printf(": unknown 3Com Ethernet card: 0x%04x\n", chipset);
return;
}
sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
IPL_NET, epintr, sc);
}