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Add Intel AGP powerhook. Tested on an 82855PM.

This commit is contained in:
jmcneill 2006-03-11 02:35:06 +00:00
parent 5e2e06bb91
commit bbd8f9b955
1 changed files with 41 additions and 2 deletions
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43
sys/dev/pci/agp_intel.c
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@ -1,4 +1,4 @@
/* $NetBSD: agp_intel.c,v 1.17 2006/01/16 22:59:36 christos Exp $ */
/* $NetBSD: agp_intel.c,v 1.18 2006/03/11 02:35:06 jmcneill Exp $ */
/*-
* Copyright (c) 2000 Doug Rabson
@ -29,7 +29,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: agp_intel.c,v 1.17 2006/01/16 22:59:36 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: agp_intel.c,v 1.18 2006/03/11 02:35:06 jmcneill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -64,6 +64,9 @@ struct agp_intel_softc {
#define CHIP_I845 0x3
#define CHIP_I850 0x4
#define CHIP_I865 0x5
void *sc_powerhook;
struct pci_conf_state sc_pciconf;
};
static u_int32_t agp_intel_get_aperture(struct agp_softc *);
@ -71,6 +74,7 @@ static int agp_intel_set_aperture(struct agp_softc *, u_int32_t);
static int agp_intel_bind_page(struct agp_softc *, off_t, bus_addr_t);
static int agp_intel_unbind_page(struct agp_softc *, off_t);
static void agp_intel_flush_tlb(struct agp_softc *);
static void agp_intel_powerhook(int, void *);
static struct agp_methods agp_intel_methods = {
agp_intel_get_aperture,
@ -254,6 +258,11 @@ agp_intel_attach(struct device *parent, struct device *self, void *aux)
AGP_INTEL_ERRSTS, 0x70);
}
isc->sc_powerhook = powerhook_establish(agp_intel_powerhook, sc);
if (isc->sc_powerhook == NULL)
aprint_error("%s: couldn't establish powerhook\n",
sc->as_dev.dv_xname);
return (0);
}
@ -265,6 +274,9 @@ agp_intel_detach(struct agp_softc *sc)
pcireg_t reg;
struct agp_intel_softc *isc = sc->as_chipc;
if (isc->sc_powerhook)
powerhook_disestablish(isc->sc_powerhook);
error = agp_generic_detach(sc);
if (error)
return error;
@ -379,3 +391,30 @@ agp_intel_flush_tlb(struct agp_softc *sc)
}
}
}
static void
agp_intel_powerhook(int why, void *opaque)
{
struct agp_softc *sc;
struct agp_intel_softc *isc;
sc = (struct agp_softc *)opaque;
isc = (struct agp_intel_softc *)sc->as_chipc;
switch (why) {
case PWR_SUSPEND:
case PWR_STANDBY:
pci_conf_capture(sc->as_pc, sc->as_tag, &isc->sc_pciconf);
break;
case PWR_RESUME:
pci_conf_restore(sc->as_pc, sc->as_tag, &isc->sc_pciconf);
agp_flush_cache();
break;
case PWR_SOFTSUSPEND:
case PWR_SOFTSTANDBY:
case PWR_SOFTRESUME:
break;
}
return;
}