NetBSD-5.0.2/sys/dev/isa/if_trtcm_isa.c
/* $NetBSD: if_trtcm_isa.c,v 1.15 2008/04/28 20:23:52 martin Exp $ */
/* XXXJRT verify doens't change isa_attach_args too early */
/*
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Onno van der Linden.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_trtcm_isa.c,v 1.15 2008/04/28 20:23:52 martin Exp $");
#undef TRTCMISADEBUG
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <sys/bus.h>
#include <dev/isa/isavar.h>
#include <dev/isa/elink.h>
#include <dev/ic/tropicreg.h>
#include <dev/ic/tropicvar.h>
#include <dev/ic/elink3reg.h>
u_int16_t tcmreadeeprom(bus_space_tag_t, bus_space_handle_t, int);
#ifdef TRTCMISADEBUG
void tcmdumpeeprom(bus_space_tag_t, bus_space_handle_t);
#endif
int trtcm_isa_probe(struct device *, struct cfdata *, void *);
int trtcm_isa_mediachange(struct tr_softc *);
void trtcm_isa_mediastatus(struct tr_softc *, struct ifmediareq *);
/*
* TODO:
*
* if_media handling in the 3com case
* mediachange() and mediastatus() function
* certain newer cards can set their speed on the fly via
* DIR_SET_DEFAULT_RING_SPEED or set the speed in the eeprom ??
*/
static void tcmaddcard(int, int, int, int, u_int, int, int);
/*
* This keeps track of which ISAs have been through a 3com probe sequence.
* A simple static variable isn't enough, since it's conceivable that
* a system might have more than one ISA bus.
*
* The "tcm_bus" member is the unit number of the parent ISA bus, e.g. "0"
* for "isa0".
*/
struct tcm_isa_done_probe {
LIST_ENTRY(tcm_isa_done_probe) tcm_link;
int tcm_bus;
};
static LIST_HEAD(, tcm_isa_done_probe) tcm_isa_all_probes;
static int tcm_isa_probes_initialized;
#define MAXTCMCARDS 20 /* if you have more than 20, you lose */
static struct tcmcard {
int bus;
int iobase;
int irq;
int maddr;
u_int msize;
long model;
char available;
char pnpmode;
} tcmcards[MAXTCMCARDS];
static int ntcmcards = 0;
static void
tcmaddcard(bus, iobase, irq, maddr, msiz, model, pnpmode)
int bus, iobase, irq, maddr;
u_int msiz;
int model, pnpmode;
{
if (ntcmcards >= MAXTCMCARDS)
return;
tcmcards[ntcmcards].bus = bus;
tcmcards[ntcmcards].iobase = iobase;
tcmcards[ntcmcards].irq = irq;
tcmcards[ntcmcards].maddr = maddr;
tcmcards[ntcmcards].msize = msiz;
tcmcards[ntcmcards].model = model;
tcmcards[ntcmcards].available = 1;
tcmcards[ntcmcards].pnpmode = pnpmode;
ntcmcards++;
}
/*
* We get eeprom data from the id_port given an offset into the
* eeprom. Basically; after the ID_sequence is sent to all of
* the cards; they enter the ID_CMD state where they will accept
* command requests. 0x80-0xbf loads the eeprom data. We then
* read the port 16 times and with every read; the cards check
* for contention (ie: if one card writes a 0 bit and another
* writes a 1 bit then the host sees a 0. At the end of the cycle;
* each card compares the data on the bus; if there is a difference
* then that card goes into ID_WAIT state again). In the meantime;
* one bit of data is returned in the AX register which is conveniently
* returned to us by bus_space_read_1(). Hence; we read 16 times getting one
* bit of data with each read.
*
* NOTE: the caller must provide an i/o handle for ELINK_ID_PORT!
*/
u_int16_t
tcmreadeeprom(iot, ioh, offset)
bus_space_tag_t iot;
bus_space_handle_t ioh;
int offset;
{
u_int16_t data = 0;
int i;
bus_space_write_1(iot, ioh, 0, 0x80 + offset);
delay(1000);
for (i = 0; i < 16; i++)
data = (data << 1) | (bus_space_read_2(iot, ioh, 0) & 1);
return (data);
}
#ifdef TRTCMISADEBUG
/*
* Dump the contents of the EEPROM to the console.
*/
void
tcmdumpeeprom(iot, ioh)
bus_space_tag_t iot;
bus_space_handle_t ioh;
{
unsigned int off, val;
printf("EEPROM contents:");
for (off=0; off < 32; off++) {
val = tcmreadeeprom(iot, ioh, off);
if ((off % 8) == 0)
printf("\n");
printf("%04x ", val);
}
printf("\n");
}
#endif
int
trtcm_isa_mediachange(struct tr_softc *sc)
{
return EINVAL;
}
void
trtcm_isa_mediastatus(sc, ifmr)
struct tr_softc *sc;
struct ifmediareq *ifmr;
{
struct ifmedia *ifm = &sc->sc_media;
ifmr->ifm_active = ifm->ifm_cur->ifm_media;
}
/* XXX hard coded constants in readeeprom elink_idseq */
int
trtcm_isa_probe(struct device *parent, struct cfdata *match,
void *aux)
{
struct isa_attach_args *ia = aux;
int bus = device_unit(parent);
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
u_int msiz;
int slot, iobase, irq, i, maddr, rsrccfg, pnpmode;
u_int16_t vendor, model;
struct tcm_isa_done_probe *tcm;
static int irqs[] = { 7, 15, 6, 11, 3, 10, 9, 5 };
if (ISA_DIRECT_CONFIG(ia))
return (0);
if (tcm_isa_probes_initialized == 0) {
LIST_INIT(&tcm_isa_all_probes);
tcm_isa_probes_initialized = 1;
}
/*
* Probe this bus if we haven't done so already.
*/
for (tcm = tcm_isa_all_probes.lh_first; tcm != NULL;
tcm = tcm->tcm_link.le_next)
if (tcm->tcm_bus == bus)
goto bus_probed;
/*
* Mark this bus so we don't probe it again.
*/
tcm = (struct tcm_isa_done_probe *)
malloc(sizeof(struct tcm_isa_done_probe), M_DEVBUF, M_NOWAIT);
if (tcm == NULL) {
printf("trtcm_isa_probe: can't allocate state storage");
return 0;
}
tcm->tcm_bus = bus;
LIST_INSERT_HEAD(&tcm_isa_all_probes, tcm, tcm_link);
/*
* Map the TokenLink ID port for the probe sequence.
*/
if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) {
printf("trtcm_isa_probe: can't map TokenLink ID port\n");
return 0;
}
for (slot = 0; slot < MAXTCMCARDS; slot++) {
pnpmode = 0;
elink_reset(iot, ioh, bus);
elink_idseq(iot, ioh, TLINK_619_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(tcmreadeeprom(iot, ioh, EEPROM_MFG_ID));
if (vendor != MFG_ID)
continue;
model = htons(tcmreadeeprom(iot, ioh, EEPROM_PROD_ID));
if (((model & 0xfff0) != 0x6190) &&
((model & 0xfff0) != 0x3190)) { /* XXX hardcoded */
#if 0
printf("trtcm: unknown model 0x%04x\n", model);
#endif
continue;
}
#ifdef TRTCMISADEBUG
tcmdumpeeprom(iot, ioh);
printf("speed: %d\n", (tcmreadeeprom(iot,ioh,8) & 2) ? 4 : 16);
#endif
rsrccfg = iobase = tcmreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG);
if (iobase & 0x20)
iobase = tcmreadeeprom(iot, ioh, EEPROM_ADDR_CFG) & 1 ?
0xa20 : 0xa24;
else
iobase = (iobase & 0x1f) * 0x10 + 0x200;
maddr = ((tcmreadeeprom(iot, ioh, EEPROM_OEM_ADDR0) & 0xfc00)
<< 3) + 0x80000;
msiz = 65536 >> ((tcmreadeeprom(iot, ioh, 8) & 0x0c) >> 2);
irq = tcmreadeeprom(iot, ioh, EEPROM_ADDR_CFG) & 0x180;
irq |= (tcmreadeeprom(iot, ioh, EEPROM_RESOURCE_CFG) & 0x40);
irq = irqs[irq >> 6];
/* Tag card so it will not respond to contention again. */
bus_space_write_1(iot, ioh, 0, TAG_ADAPTER + 1);
/*
* Don't attach a 3c319 in PnP mode.
*
* XXX Testing for the 13th bit in iobase being 0 might not
* be the right thing to do, but the EEPROM of the 3C319 is
* undocumented according to 3COM and this is one of the
* three bits that changed when I put the card in PnP mode. -chb
*/
if (((model & 0xffff0) == 0x3190) &&
((rsrccfg & 0x1000) == 0)) {
printf("3COM 3C319 TokenLink Velocity in PnP mode\n");
pnpmode = 1;
}
else {
/*
* 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);
}
tcmaddcard(bus, iobase, irq, maddr, msiz, model, pnpmode);
}
bus_space_unmap(iot, ioh, 1);
bus_probed:
if (ia->ia_nio < 1)
return (0);
if (ia->ia_niomem < 1)
return (0);
if (ia->ia_nirq < 1)
return (0);
for (i = 0; i < ntcmcards; i++) {
if (tcmcards[i].bus != bus)
continue;
if (tcmcards[i].available == 0)
continue;
if (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT &&
ia->ia_io[0].ir_addr != tcmcards[i].iobase)
continue;
if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ &&
ia->ia_irq[0].ir_irq != tcmcards[i].irq)
continue;
goto good;
}
return 0;
good:
tcmcards[i].available = 0;
if (tcmcards[i].pnpmode)
return -1; /* XXX Don't actually probe this card. */
ia->ia_nio = 1;
ia->ia_io[0].ir_addr = tcmcards[i].iobase;
/* XXX probably right, but ...... */
if (ia->ia_io[0].ir_addr == 0xa20 || ia->ia_io[0].ir_addr == 0xa24)
ia->ia_io[0].ir_size = 4;
else
ia->ia_io[0].ir_size = 16;
ia->ia_niomem = 1;
ia->ia_iomem[0].ir_addr = tcmcards[i].maddr;
ia->ia_iomem[0].ir_size = tcmcards[i].msize;
ia->ia_nirq = 1;
ia->ia_irq[0].ir_irq = tcmcards[i].irq;
ia->ia_ndrq = 0;
ia->ia_aux = (void *) tcmcards[i].model;
return 1;
}