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/* $OpenBSD: sio.c,v 1.16 2000/11/08 16:01:21 art Exp $ */
/* $NetBSD: sio.c,v 1.15 1996/12/05 01:39:36 cgd Exp $ */
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <machine/intr.h>
#include <machine/bus.h>
#include <dev/isa/isavar.h>
#include <dev/eisa/eisavar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <alpha/pci/siovar.h>
struct sio_softc {
struct device sc_dv;
bus_space_tag_t sc_iot, sc_memt;
int sc_haseisa;
};
#ifdef __BROKEN_INDIRECT_CONFIG
int siomatch __P((struct device *, void *, void *));
#else
int siomatch __P((struct device *, struct cfdata *, void *));
#endif
void sioattach __P((struct device *, struct device *, void *));
struct cfattach sio_ca = {
sizeof(struct sio_softc), siomatch, sioattach,
};
struct cfdriver sio_cd = {
NULL, "sio", DV_DULL,
};
#ifdef __BROKEN_INDIRECT_CONFIG
int pcebmatch __P((struct device *, void *, void *));
#else
int pcebmatch __P((struct device *, struct cfdata *, void *));
#endif
struct cfattach pceb_ca = {
sizeof(struct device), pcebmatch, sioattach,
};
struct cfdriver pceb_cd = {
NULL, "pceb", DV_DULL,
};
union sio_attach_args {
const char *sa_name; /* XXX should be common */
struct isabus_attach_args sa_iba;
struct eisabus_attach_args sa_eba;
};
int sioprint __P((void *, const char *pnp));
void sio_isa_attach_hook __P((struct device *, struct device *,
struct isabus_attach_args *));
void sio_eisa_attach_hook __P((struct device *, struct device *,
struct eisabus_attach_args *));
int sio_eisa_maxslots __P((void *));
int sio_eisa_intr_map __P((void *, u_int, eisa_intr_handle_t *));
void siocfiddle __P((struct isabus_attach_args *iba));
void sio_bridge_callback __P((void *));
int
siomatch(parent, match, aux)
struct device *parent;
#ifdef __BROKEN_INDIRECT_CONFIG
void *match;
#else
struct cfdata *match;
#endif
void *aux;
{
struct pci_attach_args *pa = aux;
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693 &&
pa->pa_function == 0)
return (1);
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_SIO)
return (1);
return (0);
}
int
pcebmatch(parent, match, aux)
struct device *parent;
#ifdef __BROKEN_INDIRECT_CONFIG
void *match;
#else
struct cfdata *match;
#endif
void *aux;
{
struct pci_attach_args *pa = aux;
if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL ||
PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_INTEL_PCEB)
return (0);
return (1);
}
void
sioattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct sio_softc *sc = (struct sio_softc *)self;
struct pci_attach_args *pa = aux;
printf("\n");
sc->sc_iot = pa->pa_iot;
sc->sc_memt = pa->pa_memt;
sc->sc_haseisa = (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB);
#ifdef EVCNT_COUNTERS
evcnt_attach(&sc->sc_dv, "intr", &sio_intr_evcnt);
#endif
set_pci_isa_bridge_callback(sio_bridge_callback, sc);
}
void
sio_bridge_callback(v)
void *v;
{
struct sio_softc *sc = v;
struct alpha_eisa_chipset ec;
struct alpha_isa_chipset ic;
union sio_attach_args sa;
if (sc->sc_haseisa) {
ec.ec_v = NULL;
ec.ec_attach_hook = sio_eisa_attach_hook;
ec.ec_maxslots = sio_eisa_maxslots;
ec.ec_intr_map = sio_eisa_intr_map;
ec.ec_intr_string = sio_intr_string;
ec.ec_intr_establish = sio_intr_establish;
ec.ec_intr_disestablish = sio_intr_disestablish;
sa.sa_eba.eba_busname = "eisa";
sa.sa_eba.eba_iot = sc->sc_iot;
sa.sa_eba.eba_memt = sc->sc_memt;
sa.sa_eba.eba_ec = &ec;
config_found(&sc->sc_dv, &sa.sa_eba, sioprint);
}
ic.ic_v = NULL;
ic.ic_attach_hook = sio_isa_attach_hook;
ic.ic_intr_establish = sio_intr_establish;
ic.ic_intr_disestablish = sio_intr_disestablish;
sa.sa_iba.iba_busname = "isa";
sa.sa_iba.iba_iot = sc->sc_iot;
sa.sa_iba.iba_memt = sc->sc_memt;
sa.sa_iba.iba_ic = ⁣
config_found(&sc->sc_dv, &sa.sa_iba, sioprint);
}
int
sioprint(aux, pnp)
void *aux;
const char *pnp;
{
register union sio_attach_args *sa = aux;
if (pnp)
printf("%s at %s", sa->sa_name, pnp);
return (UNCONF);
}
void
sio_isa_attach_hook(parent, self, iba)
struct device *parent, *self;
struct isabus_attach_args *iba;
{
siocfiddle(iba);
}
void
sio_eisa_attach_hook(parent, self, eba)
struct device *parent, *self;
struct eisabus_attach_args *eba;
{
/* Nothing to do. */
}
int
sio_eisa_maxslots(v)
void *v;
{
return 16; /* as good a number as any. only 8, maybe? */
}
int
sio_eisa_intr_map(v, irq, ihp)
void *v;
u_int irq;
eisa_intr_handle_t *ihp;
{
#define ICU_LEN 16 /* number of ISA IRQs (XXX) */
if (irq >= ICU_LEN) {
printf("sio_eisa_intr_map: bad IRQ %d\n", irq);
*ihp = -1;
return 1;
}
if (irq == 2) {
printf("sio_eisa_intr_map: changed IRQ 2 to IRQ 9\n");
irq = 9;
}
*ihp = irq;
return 0;
}
/*
* Look for and gently fondle the 87312 Super I/O chip.
*/
#define SIOC_IDE_ENABLE 0x40
#define SIOC_NPORTS 2
void
siocfiddle(iba)
struct isabus_attach_args *iba;
{
bus_space_tag_t iot = iba->iba_iot;
bus_space_handle_t ioh;
extern int cputype;
int addr;
u_int8_t reg0;
/* Decide based on machine type */
switch (cputype) {
case 11: /* DEC AXPpci */
case 12: /* DEC 2100 A50 */
addr = 0x26e;
break;
case 26: /* DEC EB164 */
addr = 0x398;
break;
default:
return;
}
if (bus_space_map(iot, addr, SIOC_NPORTS, 0, &ioh))
return;
/* select and read register 0 */
bus_space_write_1(iot, ioh, 0, 0);
reg0 = bus_space_read_1(iot, ioh, 1);
/* write back with IDE enabled flag set, and do it twice! */
bus_space_write_1(iot, ioh, 0, 0);
bus_space_write_1(iot, ioh, 1, reg0 | SIOC_IDE_ENABLE);
bus_space_write_1(iot, ioh, 1, reg0 | SIOC_IDE_ENABLE);
bus_space_unmap(iot, ioh, SIOC_NPORTS);
}
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