OpenBSD-4.6/sys/dev/isa/isa.c
/* $OpenBSD: isa.c,v 1.39 2003/06/03 21:09:02 deraadt Exp $ */
/* $NetBSD: isa.c,v 1.85 1996/05/14 00:31:04 thorpej Exp $ */
/*
* Copyright (c) 1997, Jason Downs. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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(S) 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) 1993, 1994 Charles Hannum. 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 Charles Hannum.
* 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/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/extent.h>
#include <machine/intr.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isadmareg.h>
int isamatch(struct device *, void *, void *);
void isaattach(struct device *, struct device *, void *);
extern int autoconf_verbose;
struct cfattach isa_ca = {
sizeof(struct isa_softc), isamatch, isaattach
};
struct cfdriver isa_cd = {
NULL, "isa", DV_DULL, 1
};
int
isamatch(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct cfdata *cf = match;
struct isabus_attach_args *iba = aux;
if (strcmp(iba->iba_busname, cf->cf_driver->cd_name))
return (0);
/* XXX check other indicators */
return (1);
}
void
isaattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct isa_softc *sc = (struct isa_softc *)self;
struct isabus_attach_args *iba = aux;
isa_attach_hook(parent, self, iba);
printf("\n");
sc->sc_iot = iba->iba_iot;
sc->sc_memt = iba->iba_memt;
#if NISADMA > 0
sc->sc_dmat = iba->iba_dmat;
#endif /* NISADMA > 0 */
sc->sc_ic = iba->iba_ic;
#if NISAPNP > 0
isapnp_isa_attach_hook(sc);
#endif
#if NISADMA > 0
/*
* Map the registers used by the ISA DMA controller.
* XXX Should be done in the isadmaattach routine.. but the delay
* XXX port makes it troublesome. Note that these aren't really
* XXX valid on ISA busses without DMA.
*/
if (bus_space_map(sc->sc_iot, IO_DMA1, DMA1_IOSIZE, 0, &sc->sc_dma1h))
panic("isaattach: can't map DMA controller #1");
if (bus_space_map(sc->sc_iot, IO_DMA2, DMA2_IOSIZE, 0, &sc->sc_dma2h))
panic("isaattach: can't map DMA controller #2");
if (bus_space_map(sc->sc_iot, IO_DMAPG, 0xf, 0, &sc->sc_dmapgh))
panic("isaattach: can't map DMA page registers");
/*
* Map port 0x84, which causes a 1.25us delay when read.
* We do this now, since several drivers need it.
* XXX this port doesn't exist on all ISA busses...
*/
if (bus_space_subregion(sc->sc_iot, sc->sc_dmapgh, 0x04, 1,
&sc->sc_delaybah))
#else /* NISADMA > 0 */
if (bus_space_map(sc->sc_iot, IO_DMAPG + 0x4, 0x1, 0,
&sc->sc_delaybah))
#endif /* NISADMA > 0 */
panic("isaattach: can't map `delay port'"); /* XXX */
TAILQ_INIT(&sc->sc_subdevs);
config_scan(isascan, self);
}
int
isaprint(aux, isa)
void *aux;
const char *isa;
{
struct isa_attach_args *ia = aux;
if (ia->ia_iosize)
printf(" port 0x%x", ia->ia_iobase);
if (ia->ia_iosize > 1)
printf("/%d", ia->ia_iosize);
if (ia->ia_msize)
printf(" iomem 0x%x", ia->ia_maddr);
if (ia->ia_msize > 1)
printf("/%d", ia->ia_msize);
if (ia->ia_irq != IRQUNK)
printf(" irq %d", ia->ia_irq);
if (ia->ia_drq != DRQUNK)
printf(" drq %d", ia->ia_drq);
if (ia->ia_drq2 != DRQUNK)
printf(" drq2 %d", ia->ia_drq2);
return (UNCONF);
}
void
isascan(parent, match)
struct device *parent;
void *match;
{
struct isa_softc *sc = (struct isa_softc *)parent;
struct device *dev = match;
struct cfdata *cf = dev->dv_cfdata;
struct isa_attach_args ia;
ia.ia_iot = sc->sc_iot;
ia.ia_memt = sc->sc_memt;
#if NISADMA > 0
ia.ia_dmat = sc->sc_dmat;
#endif /* NISADMA > 0 */
ia.ia_ic = sc->sc_ic;
ia.ia_iobase = cf->cf_iobase;
ia.ia_iosize = 0x666;
ia.ia_maddr = cf->cf_maddr;
ia.ia_msize = cf->cf_msize;
ia.ia_irq = cf->cf_irq == 2 ? 9 : cf->cf_irq;
ia.ia_drq = cf->cf_drq;
ia.ia_drq2 = cf->cf_drq2;
ia.ia_delaybah = sc->sc_delaybah;
if (cf->cf_fstate == FSTATE_STAR) {
struct isa_attach_args ia2 = ia;
if (autoconf_verbose)
printf(">>> probing for %s*\n",
cf->cf_driver->cd_name);
while ((*cf->cf_attach->ca_match)(parent, dev, &ia2) > 0) {
#if !defined(__NO_ISA_INTR_CHECK)
if ((ia2.ia_irq != IRQUNK) &&
!isa_intr_check(sc->sc_ic, ia2.ia_irq, IST_EDGE)) {
printf("%s%d: irq %d already in use\n",
cf->cf_driver->cd_name, cf->cf_unit,
ia2.ia_irq);
ia2 = ia;
break;
}
#endif
if (autoconf_verbose)
printf(">>> probe for %s* clone into %s%d\n",
cf->cf_driver->cd_name,
cf->cf_driver->cd_name, cf->cf_unit);
if (ia2.ia_iosize == 0x666) {
printf("%s: iosize not repaired by driver\n",
sc->sc_dev.dv_xname);
ia2.ia_iosize = 0;
}
config_attach(parent, dev, &ia2, isaprint);
dev = config_make_softc(parent, cf);
#if NISADMA > 0
if (ia2.ia_drq != DRQUNK)
ISA_DRQ_ALLOC((struct device *)sc, ia2.ia_drq);
if (ia2.ia_drq2 != DRQUNK)
ISA_DRQ_ALLOC((struct device *)sc, ia2.ia_drq2);
#endif /* NISAMDA > 0 */
ia2 = ia;
}
if (autoconf_verbose)
printf(">>> probing for %s* finished\n",
cf->cf_driver->cd_name);
free(dev, M_DEVBUF);
return;
}
if (autoconf_verbose)
printf(">>> probing for %s%d\n", cf->cf_driver->cd_name,
cf->cf_unit);
if ((*cf->cf_attach->ca_match)(parent, dev, &ia) > 0) {
#if !defined(__NO_ISA_INTR_CHECK)
if ((ia.ia_irq != IRQUNK) &&
!isa_intr_check(sc->sc_ic, ia.ia_irq, IST_EDGE)) {
printf("%s%d: irq %d already in use\n",
cf->cf_driver->cd_name, cf->cf_unit, ia.ia_irq);
free(dev, M_DEVBUF);
} else {
#endif
if (autoconf_verbose)
printf(">>> probing for %s%d succeeded\n",
cf->cf_driver->cd_name, cf->cf_unit);
config_attach(parent, dev, &ia, isaprint);
#if NISADMA > 0
if (ia.ia_drq != DRQUNK)
ISA_DRQ_ALLOC((struct device *)sc, ia.ia_drq);
if (ia.ia_drq2 != DRQUNK)
ISA_DRQ_ALLOC((struct device *)sc, ia.ia_drq2);
#endif /* NISAMDA > 0 */
#if !defined(__NO_ISA_INTR_CHECK)
}
#endif
} else {
if (autoconf_verbose)
printf(">>> probing for %s%d failed\n",
cf->cf_driver->cd_name, cf->cf_unit);
free(dev, M_DEVBUF);
}
}
char *
isa_intr_typename(type)
int type;
{
switch (type) {
case IST_NONE:
return ("none");
case IST_PULSE:
return ("pulsed");
case IST_EDGE:
return ("edge-triggered");
case IST_LEVEL:
return ("level-triggered");
default:
panic("isa_intr_typename: invalid type %d", type);
}
}