FreeBSD-5.3/sys/dev/si/si_isa.c
/*
* Device driver for Specialix range (SI/XIO) of serial line multiplexors.
*
* Copyright (C) 2000, Peter Wemm <peter@netplex.com.au>
*
* 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
* notices, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notices, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY ``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 AUTHORS BE LIABLE.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/dev/si/si_isa.c,v 1.6 2004/05/30 20:08:40 phk Exp $");
#include "opt_debug_si.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <dev/si/sireg.h>
#include <dev/si/sivar.h>
#include <isa/isavar.h>
/* Look for a valid board at the given mem addr */
static int
si_isa_probe(device_t dev)
{
struct si_softc *sc;
int type;
u_int i, ramsize;
volatile unsigned char was, *ux;
volatile unsigned char *maddr;
unsigned char *paddr;
int unit;
/* No pnp support */
if (isa_get_vendorid(dev))
return (ENXIO);
sc = device_get_softc(dev);
unit = device_get_unit(dev);
sc->sc_mem_rid = 0;
sc->sc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
&sc->sc_mem_rid,
0, ~0, SIPROBEALLOC, RF_ACTIVE);
if (!sc->sc_mem_res) {
device_printf(dev, "cannot allocate memory resource\n");
return ENXIO;
}
paddr = (caddr_t)rman_get_start(sc->sc_mem_res);/* physical */
maddr = rman_get_virtual(sc->sc_mem_res); /* in kvm */
DPRINT((0, DBG_AUTOBOOT, "si%d: probe at virtual=0x%x physical=0x%x\n",
unit, maddr, paddr));
/*
* this is a lie, but it's easier than trying to handle caching
* and ram conflicts in the >1M and <16M region.
*/
if ((caddr_t)paddr < (caddr_t)0xA0000 ||
(caddr_t)paddr >= (caddr_t)0x100000) {
device_printf(dev, "maddr (%p) out of range\n", paddr);
goto fail;
}
if (((uintptr_t)paddr & 0x7fff) != 0) {
device_printf(dev, "maddr (%p) not on 32k boundary\n", paddr);
goto fail;
}
/* Is there anything out there? (0x17 is just an arbitrary number) */
*maddr = 0x17;
if (*maddr != 0x17) {
device_printf(dev, "0x17 check fail at phys %p\n", paddr);
goto fail;
}
/*
* Let's look first for a JET ISA card, since that's pretty easy
*
* All jet hosts are supposed to have this string in the IDROM,
* but it's not worth checking on self-IDing busses like PCI.
*/
{
unsigned char *jet_chk_str = "JET HOST BY KEV#";
for (i = 0; i < strlen(jet_chk_str); i++)
if (jet_chk_str[i] != *(maddr + SIJETIDSTR + 2 * i))
goto try_mk2;
}
DPRINT((0, DBG_AUTOBOOT|DBG_FAIL, "si%d: JET first check - 0x%x\n",
unit, (*(maddr+SIJETIDBASE))));
if (*(maddr+SIJETIDBASE) != (SISPLXID&0xff))
goto try_mk2;
DPRINT((0, DBG_AUTOBOOT|DBG_FAIL, "si%d: JET second check - 0x%x\n",
unit, (*(maddr+SIJETIDBASE+2))));
if (*(maddr+SIJETIDBASE+2) != ((SISPLXID&0xff00)>>8))
goto try_mk2;
/* It must be a Jet ISA or RIO card */
DPRINT((0, DBG_AUTOBOOT|DBG_FAIL, "si%d: JET id check - 0x%x\n",
unit, (*(maddr+SIUNIQID))));
if ((*(maddr+SIUNIQID) & 0xf0) != 0x20)
goto try_mk2;
/* It must be a Jet ISA SI/XIO card */
*(maddr + SIJETCONFIG) = 0;
type = SIJETISA;
ramsize = SIJET_RAMSIZE;
goto got_card;
try_mk2:
/*
* OK, now to see if whatever responded is really an SI card.
* Try for a MK II next (SIHOST2)
*/
for (i = SIPLSIG; i < SIPLSIG + 8; i++)
if ((*(maddr+i) & 7) != (~(unsigned char)i & 7))
goto try_mk1;
/* It must be an SIHOST2 */
*(maddr + SIPLRESET) = 0;
*(maddr + SIPLIRQCLR) = 0;
*(maddr + SIPLIRQSET) = 0x10;
type = SIHOST2;
ramsize = SIHOST2_RAMSIZE;
goto got_card;
try_mk1:
/*
* Its not a MK II, so try for a MK I (SIHOST)
*/
*(maddr+SIRESET) = 0x0; /* reset the card */
*(maddr+SIINTCL) = 0x0; /* clear int */
*(maddr+SIRAM) = 0x17;
if (*(maddr+SIRAM) != (unsigned char)0x17)
goto fail;
*(maddr+0x7ff8) = 0x17;
if (*(maddr+0x7ff8) != (unsigned char)0x17) {
device_printf(dev, "0x17 check fail at phys %p = 0x%x\n",
paddr+0x77f8, *(maddr+0x77f8));
goto fail;
}
/* It must be an SIHOST (maybe?) - there must be a better way XXX */
type = SIHOST;
ramsize = SIHOST_RAMSIZE;
got_card:
DPRINT((0, DBG_AUTOBOOT, "si%d: found type %d card, try memory test\n",
unit, type));
/* Try the acid test */
ux = maddr + SIRAM;
for (i = 0; i < ramsize; i++, ux++)
*ux = (unsigned char)(i&0xff);
ux = maddr + SIRAM;
for (i = 0; i < ramsize; i++, ux++) {
if ((was = *ux) != (unsigned char)(i&0xff)) {
device_printf(dev,
"memtest fail at phys %p, was %x should be %x\n",
paddr + i, was, i & 0xff);
goto fail;
}
}
/* clear out the RAM */
ux = maddr + SIRAM;
for (i = 0; i < ramsize; i++)
*ux++ = 0;
ux = maddr + SIRAM;
for (i = 0; i < ramsize; i++) {
if ((was = *ux++) != 0) {
device_printf(dev, "clear fail at phys %p, was %x\n",
paddr + i, was);
goto fail;
}
}
/*
* Success, we've found a valid board, now fill in
* the adapter structure.
*/
switch (type) {
case SIHOST2:
switch (isa_get_irq(dev)) {
case 11:
case 12:
case 15:
break;
default:
device_printf(dev,
"bad IRQ value - %d (11, 12, 15 allowed)\n",
isa_get_irq(dev));
goto fail;
}
sc->sc_memsize = SIHOST2_MEMSIZE;
break;
case SIHOST:
switch (isa_get_irq(dev)) {
case 11:
case 12:
case 15:
break;
default:
device_printf(dev,
"bad IRQ value - %d (11, 12, 15 allowed)\n",
isa_get_irq(dev));
goto fail;
}
sc->sc_memsize = SIHOST_MEMSIZE;
break;
case SIJETISA:
switch (isa_get_irq(dev)) {
case 9:
case 10:
case 11:
case 12:
case 15:
break;
default:
device_printf(dev,
"bad IRQ value - %d (9, 10, 11, 12, 15 allowed)\n",
isa_get_irq(dev));
goto fail;
}
sc->sc_memsize = SIJETISA_MEMSIZE;
break;
case SIMCA: /* MCA */
default:
device_printf(dev, "card type %d not supported\n", type);
goto fail;
}
sc->sc_type = type;
bus_release_resource(dev, SYS_RES_MEMORY,
sc->sc_mem_rid, sc->sc_mem_res);
sc->sc_mem_res = 0;
return (0); /* success! */
fail:
if (sc->sc_mem_res) {
bus_release_resource(dev, SYS_RES_MEMORY,
sc->sc_mem_rid, sc->sc_mem_res);
sc->sc_mem_res = 0;
}
return(EINVAL);
}
static int
si_isa_attach(device_t dev)
{
int error;
void *ih;
struct si_softc *sc;
error = 0;
ih = NULL;
sc = device_get_softc(dev);
sc->sc_mem_rid = 0;
sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->sc_mem_rid,
RF_ACTIVE);
if (!sc->sc_mem_res) {
device_printf(dev, "couldn't map memory\n");
goto fail;
}
sc->sc_paddr = (caddr_t)rman_get_start(sc->sc_mem_res);
sc->sc_maddr = rman_get_virtual(sc->sc_mem_res);
sc->sc_irq_rid = 0;
sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&sc->sc_irq_rid,
RF_ACTIVE | RF_SHAREABLE);
if (!sc->sc_irq_res) {
device_printf(dev, "couldn't allocate interrupt\n");
goto fail;
}
sc->sc_irq = rman_get_start(sc->sc_irq_res);
error = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_TTY,
si_intr, sc,&ih);
if (error) {
device_printf(dev, "couldn't activate interrupt\n");
goto fail;
}
error = siattach(dev);
if (error)
goto fail;
return (0); /* success */
fail:
if (error == 0)
error = ENXIO;
if (sc->sc_irq_res) {
if (ih)
bus_teardown_intr(dev, sc->sc_irq_res, ih);
bus_release_resource(dev, SYS_RES_IRQ,
sc->sc_irq_rid, sc->sc_irq_res);
sc->sc_irq_res = 0;
}
if (sc->sc_mem_res) {
bus_release_resource(dev, SYS_RES_MEMORY,
sc->sc_mem_rid, sc->sc_mem_res);
sc->sc_mem_res = 0;
}
return (error);
}
static device_method_t si_isa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, si_isa_probe),
DEVMETHOD(device_attach, si_isa_attach),
{ 0, 0 }
};
static driver_t si_isa_driver = {
"si",
si_isa_methods,
sizeof(struct si_softc),
};
DRIVER_MODULE(si, isa, si_isa_driver, si_devclass, 0, 0);