diff options
Diffstat (limited to 'sys/dev/pci')
| -rw-r--r-- | sys/dev/pci/agp_i810.c | 36 | ||||
| -rw-r--r-- | sys/dev/pci/agpreg.h | 4 |
2 files changed, 32 insertions, 8 deletions
diff --git a/sys/dev/pci/agp_i810.c b/sys/dev/pci/agp_i810.c index e595cb0f59b..39c5ff52ac8 100644 --- a/sys/dev/pci/agp_i810.c +++ b/sys/dev/pci/agp_i810.c @@ -1,4 +1,4 @@ -/* $OpenBSD: agp_i810.c,v 1.43 2008/12/23 22:01:38 oga Exp $ */ +/* $OpenBSD: agp_i810.c,v 1.44 2008/12/24 05:42:58 oga Exp $ */ /*- * Copyright (c) 2000 Doug Rabson @@ -91,6 +91,7 @@ int agp_i810_free_memory(void *, struct agp_memory *); int agp_i810_bind_memory(void *, struct agp_memory *, off_t); int agp_i810_unbind_memory(void *, struct agp_memory *); void agp_i810_write_gatt(struct agp_i810_softc *, bus_size_t, u_int32_t); +int intagp_gmch_match(struct pci_attach_args *); struct cfattach intagp_ca = { sizeof(struct agp_i810_softc), agp_i810_probe, agp_i810_attach @@ -168,6 +169,21 @@ agp_i810_get_chiptype(struct pci_attach_args *pa) return (CHIP_NONE); } +/* + * We're intel IGD, bus 0 function 0 dev 0 should be the GMCH, so it should + * be Intel + */ +int +intagp_gmch_match(struct pci_attach_args *pa) +{ + if (pa->pa_bus == 0 && pa->pa_device == 0 && pa->pa_function == 0 && + PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && + PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && + PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_HOST) + return (1); + return (0); +} + int agp_i810_probe(struct device *parent, void *match, void *aux) { @@ -185,7 +201,7 @@ agp_i810_attach(struct device *parent, struct device *self, void *aux) { struct agp_i810_softc *isc = (struct agp_i810_softc *)self; struct agp_gatt *gatt; - struct pci_attach_args *pa = aux; + struct pci_attach_args *pa = aux, bpa; struct vga_pci_softc *vga = (struct vga_pci_softc *)parent; bus_addr_t mmaddr, gmaddr; pcireg_t memtype; @@ -242,6 +258,16 @@ agp_i810_attach(struct device *parent, struct device *self, void *aux) gatt->ag_entries = isc->aperture >> AGP_PAGE_SHIFT; + /* + * Find the GMCH, some of the registers we need to read for + * configuration purposes are on there. it's always at + * 0/0/0 (bus/dev/func). + */ + if (pci_find_device(&bpa, intagp_gmch_match) == 0) { + printf("can't find GMCH\n"); + goto out; + } + if (isc->chiptype == CHIP_I810) { int dummyseg; /* Some i810s have on-chip memory called dcache */ @@ -269,7 +295,7 @@ agp_i810_attach(struct device *parent, struct device *self, void *aux) u_int32_t pgtblctl; u_int16_t gcc1; - reg = pci_conf_read(pa->pa_pc, pa->pa_tag, AGP_I830_GCC1); + reg = pci_conf_read(bpa.pa_pc, bpa.pa_tag, AGP_I830_GCC0); gcc1 = (u_int16_t)(reg >> 16); switch (gcc1 & AGP_I830_GCC1_GMS) { case AGP_I830_GCC1_GMS_STOLEN_512: @@ -312,7 +338,7 @@ agp_i810_attach(struct device *parent, struct device *self, void *aux) * BIOS display. */ - reg = pci_conf_read(pa->pa_pc, pa->pa_tag, AGP_I855_GCC1); + reg = pci_conf_read(bpa.pa_pc, bpa.pa_tag, AGP_I855_GCC1); gcc1 = (u_int16_t)(reg >> 16); switch (isc->chiptype) { case CHIP_I855: @@ -408,7 +434,6 @@ agp_i810_attach(struct device *parent, struct device *self, void *aux) printf("unknown memory configuration, disabling\n"); goto out; } - #ifdef DEBUG if (isc->stolen > 0) { printf(": detected %dk stolen memory", @@ -417,7 +442,6 @@ agp_i810_attach(struct device *parent, struct device *self, void *aux) printf(": no preallocated video memory\n"); #endif - /* GATT address is already in there, make sure it's enabled */ pgtblctl = READ4(AGP_I810_PGTBL_CTL); pgtblctl |= 1; diff --git a/sys/dev/pci/agpreg.h b/sys/dev/pci/agpreg.h index c4ab588c19d..e8d9281855a 100644 --- a/sys/dev/pci/agpreg.h +++ b/sys/dev/pci/agpreg.h @@ -1,4 +1,4 @@ -/* $OpenBSD: agpreg.h,v 1.11 2008/12/23 22:01:38 oga Exp $ */ +/* $OpenBSD: agpreg.h,v 1.12 2008/12/24 05:42:58 oga Exp $ */ /* $NetBSD: agpreg.h,v 1.1 2001/09/10 10:01:02 fvdl Exp $ */ /*- @@ -216,7 +216,7 @@ /* * Config registers for 852GM/855GM/865G device 0 */ -#define AGP_I855_GCC1 0x52 +#define AGP_I855_GCC1 0x50 #define AGP_I855_GCC1_DEV2 0x08 #define AGP_I855_GCC1_DEV2_ENABLED 0x00 #define AGP_I855_GCC1_DEV2_DISABLED 0x08 |