NetBSD/sys/dev/isa/i82365_isasubr.c

268 lines
7.6 KiB
C

/* $NetBSD: i82365_isasubr.c,v 1.1 1998/06/07 18:28:31 sommerfe Exp $ */
#define PCICISADEBUG
/*
* Copyright (c) 1998 Bill Sommerfeld. All rights reserved.
* Copyright (c) 1997 Marc Horowitz. 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 Marc Horowitz.
* 4. The name of the author 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 <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/extent.h>
#include <sys/malloc.h>
#include <vm/vm.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/pcmcia/pcmciareg.h>
#include <dev/pcmcia/pcmciavar.h>
#include <dev/pcmcia/pcmciachip.h>
#include <dev/ic/i82365reg.h>
#include <dev/ic/i82365var.h>
#include <dev/isa/i82365_isavar.h>
/*****************************************************************************
* Configurable parameters.
*****************************************************************************/
#include "opt_pcic_isa_alloc_iobase.h"
#include "opt_pcic_isa_alloc_iosize.h"
#include "opt_pcic_isa_intr_alloc_mask.h"
/*
* Default I/O allocation range. If both are set to non-zero, these
* values will be used instead. Otherwise, the code attempts to probe
* the bus width. Systems with 10 address bits should use 0x300 and 0xff.
* Systems with 12 address bits (most) should use 0x400 and 0xbff.
*/
#ifndef PCIC_ISA_ALLOC_IOBASE
#define PCIC_ISA_ALLOC_IOBASE 0
#endif
#ifndef PCIC_ISA_ALLOC_IOSIZE
#define PCIC_ISA_ALLOC_IOSIZE 0
#endif
int pcic_isa_alloc_iobase = PCIC_ISA_ALLOC_IOBASE;
int pcic_isa_alloc_iosize = PCIC_ISA_ALLOC_IOSIZE;
/*
* Default IRQ allocation bitmask. This defines the range of allowable
* IRQs for PCMCIA slots. Useful if order of probing would screw up other
* devices, or if PCIC hardware/cards have trouble with certain interrupt
* lines.
*
* We disable IRQ 10 by default, since some common laptops (namely, the
* NEC Versa series) reserve IRQ 10 for the docking station SCSI interface.
*/
#ifndef PCIC_ISA_INTR_ALLOC_MASK
#define PCIC_ISA_INTR_ALLOC_MASK 0xfbff
#endif
int pcic_isa_intr_alloc_mask = PCIC_ISA_INTR_ALLOC_MASK;
/*****************************************************************************
* End of configurable parameters.
*****************************************************************************/
#ifdef PCICISADEBUG
int pcicsubr_debug = 0 /* XXX */ ;
#define DPRINTF(arg) if (pcicsubr_debug) printf arg;
#else
#define DPRINTF(arg)
#endif
void pcic_isa_bus_width_probe (sc, iot, ioh, base, length)
struct pcic_softc *sc;
bus_space_tag_t iot;
bus_space_handle_t ioh;
bus_addr_t base;
u_int32_t length;
{
bus_space_handle_t ioh_high;
int i, iobuswidth, tmp1, tmp2;
/*
* figure out how wide the isa bus is. Do this by checking if the
* pcic controller is mirrored 0x400 above where we expect it to be.
*/
iobuswidth = 12;
/* Map i/o space. */
if (bus_space_map(iot, base + 0x400, length, 0, &ioh_high)) {
printf("%s: can't map high i/o space\n", sc->dev.dv_xname);
return;
}
for (i = 0; i < PCIC_NSLOTS; i++) {
if (sc->handle[i].flags & PCIC_FLAG_SOCKETP) {
/*
* read the ident flags from the normal space and
* from the mirror, and compare them
*/
bus_space_write_1(iot, ioh, PCIC_REG_INDEX,
sc->handle[i].sock + PCIC_IDENT);
tmp1 = bus_space_read_1(iot, ioh, PCIC_REG_DATA);
bus_space_write_1(iot, ioh_high, PCIC_REG_INDEX,
sc->handle[i].sock + PCIC_IDENT);
tmp2 = bus_space_read_1(iot, ioh_high, PCIC_REG_DATA);
if (tmp1 == tmp2)
iobuswidth = 10;
}
}
bus_space_free(iot, ioh_high, length);
/*
* XXX mycroft recommends I/O space range 0x400-0xfff . I should put
* this in a header somewhere
*/
/*
* XXX some hardware doesn't seem to grok addresses in 0x400 range--
* apparently missing a bit or more of address lines. (e.g.
* CIRRUS_PD672X with Linksys EthernetCard ne2000 clone in TI
* TravelMate 5000--not clear which is at fault)
*
* Add a kludge to detect 10 bit wide buses and deal with them,
* and also a config file option to override the probe.
*/
if (iobuswidth == 10) {
sc->iobase = 0x300;
sc->iosize = 0x0ff;
} else {
#if 0
/*
* This is what we'd like to use, but...
*/
sc->iobase = 0x400;
sc->iosize = 0xbff;
#else
/*
* ...the above bus width probe doesn't always work.
* So, experimentation has shown the following range
* to not lose on systems that 0x300-0x3ff loses on
* (e.g. the NEC Versa 6030X).
*/
sc->iobase = 0x330;
sc->iosize = 0x0cf;
#endif
}
DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx (probed)\n",
sc->dev.dv_xname, (long) sc->iobase,
(long) sc->iobase + sc->iosize));
if (pcic_isa_alloc_iobase && pcic_isa_alloc_iosize) {
sc->iobase = pcic_isa_alloc_iobase;
sc->iosize = pcic_isa_alloc_iosize;
DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx "
"(config override)\n", sc->dev.dv_xname, (long) sc->iobase,
(long) sc->iobase + sc->iosize));
}
}
void *
pcic_isa_chip_intr_establish(pch, pf, ipl, fct, arg)
pcmcia_chipset_handle_t pch;
struct pcmcia_function *pf;
int ipl;
int (*fct) __P((void *));
void *arg;
{
struct pcic_handle *h = (struct pcic_handle *) pch;
isa_chipset_tag_t ic = h->sc->intr_est;
int irq, ist;
void *ih;
int reg;
if (pf->cfe->flags & PCMCIA_CFE_IRQLEVEL)
ist = IST_LEVEL;
else if (pf->cfe->flags & PCMCIA_CFE_IRQPULSE)
ist = IST_PULSE;
else
ist = IST_LEVEL;
if (isa_intr_alloc(ic,
PCIC_INTR_IRQ_VALIDMASK & pcic_isa_intr_alloc_mask, ist, &irq))
return (NULL);
if ((ih = isa_intr_establish(ic, irq, ist, ipl,
fct, arg)) == NULL)
return (NULL);
reg = pcic_read(h, PCIC_INTR);
reg &= ~PCIC_INTR_IRQ_MASK;
reg |= irq;
pcic_write(h, PCIC_INTR, reg);
h->ih_irq = irq;
printf("%s: card irq %d\n", h->pcmcia->dv_xname, irq);
return (ih);
}
void
pcic_isa_chip_intr_disestablish(pch, ih)
pcmcia_chipset_handle_t pch;
void *ih;
{
struct pcic_handle *h = (struct pcic_handle *) pch;
isa_chipset_tag_t ic = h->sc->intr_est;
int reg;
h->ih_irq = 0;
reg = pcic_read(h, PCIC_INTR);
reg &= ~(PCIC_INTR_IRQ_MASK | PCIC_INTR_ENABLE);
pcic_write(h, PCIC_INTR, reg);
isa_intr_disestablish(ic, ih);
}