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-rw-r--r--sys/dev/pci/agp_i810.c77
-rw-r--r--sys/dev/pci/agpreg.h18
2 files changed, 89 insertions, 6 deletions
diff --git a/sys/dev/pci/agp_i810.c b/sys/dev/pci/agp_i810.c
index 2115778a41e..c9980998dba 100644
--- a/sys/dev/pci/agp_i810.c
+++ b/sys/dev/pci/agp_i810.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: agp_i810.c,v 1.6 2004/01/20 19:23:06 grange Exp $ */
+/* $OpenBSD: agp_i810.c,v 1.7 2004/01/20 19:30:40 grange Exp $ */
/* $NetBSD: agp_i810.c,v 1.15 2003/01/31 00:07:39 thorpej Exp $ */
/*-
@@ -56,6 +56,7 @@
#define CHIP_I810 0 /* i810/i815 */
#define CHIP_I830 1 /* i830/i845 */
+#define CHIP_I855 2 /* i852GM/i855GM/i865G */
struct agp_i810_softc {
struct agp_gatt *gatt;
@@ -129,6 +130,10 @@ agp_i810_attach(struct vga_pci_softc *sc, struct pci_attach_args *pa,
case PCI_PRODUCT_INTEL_82845G_IGD:
isc->chiptype = CHIP_I830;
break;
+ case PCI_PRODUCT_INTEL_82852GM_AGP:
+ case PCI_PRODUCT_INTEL_82865_IGD:
+ isc->chiptype = CHIP_I855;
+ break;
}
error = pci_mapreg_map(pa, AGP_I810_MMADR,
@@ -170,7 +175,7 @@ agp_i810_attach(struct vga_pci_softc *sc, struct pci_attach_args *pa,
agp_flush_cache();
/* Install the GATT. */
WRITE4(AGP_I810_PGTBL_CTL, gatt->ag_physical | 1);
- } else {
+ } else if (isc->chiptype == CHIP_I830) {
/* The i830 automatically initializes the 128k gatt on boot. */
pcireg_t reg;
u_int32_t pgtblctl;
@@ -209,6 +214,51 @@ agp_i810_attach(struct vga_pci_softc *sc, struct pci_attach_args *pa,
WRITE4(AGP_I810_PGTBL_CTL, pgtblctl);
gatt->ag_physical = pgtblctl & ~1;
+ } else { /* CHIP_I855 */
+ /* The 855GM automatically initializes the 128k gatt on boot. */
+ pcireg_t reg;
+ u_int32_t pgtblctl;
+ u_int16_t gcc1;
+
+ reg = pci_conf_read(isc->bridge_pa.pa_pc,
+ isc->bridge_pa.pa_tag, AGP_I855_GCC1);
+ gcc1 = (u_int16_t)(reg >> 16);
+ switch (gcc1 & AGP_I855_GCC1_GMS) {
+ case AGP_I855_GCC1_GMS_STOLEN_1M:
+ isc->stolen = (1024 - 132) * 1024 / 4096;
+ break;
+ case AGP_I855_GCC1_GMS_STOLEN_4M:
+ isc->stolen = (4096 - 132) * 1024 / 4096;
+ break;
+ case AGP_I855_GCC1_GMS_STOLEN_8M:
+ isc->stolen = (8192 - 132) * 1024 / 4096;
+ break;
+ case AGP_I855_GCC1_GMS_STOLEN_16M:
+ isc->stolen = (16384 - 132) * 1024 / 4096;
+ break;
+ case AGP_I855_GCC1_GMS_STOLEN_32M:
+ isc->stolen = (32768 - 132) * 1024 / 4096;
+ break;
+ default:
+ isc->stolen = 0;
+ printf(
+ ": unknown memory configuration, disabling\n");
+ agp_generic_detach(sc);
+ return (EINVAL);
+ }
+#ifdef DEBUG
+ if (isc->stolen > 0) {
+ printf(": detected %dk stolen memory",
+ isc->stolen * 4);
+ }
+#endif
+
+ /* GATT address is already in there, make sure it's enabled */
+ pgtblctl = READ4(AGP_I810_PGTBL_CTL);
+ pgtblctl |= 1;
+ WRITE4(AGP_I810_PGTBL_CTL, pgtblctl);
+
+ gatt->ag_physical = pgtblctl & ~1;
}
/*
@@ -236,7 +286,7 @@ agp_i810_get_aperture(struct vga_pci_softc *sc)
return (32 * 1024 * 1024);
else
return (64 * 1024 * 1024);
- } else { /* I830 */
+ } else if (isc->chiptype == CHIP_I830) {
u_int16_t gcc1;
reg = pci_conf_read(isc->bridge_pa.pa_pc,
@@ -246,6 +296,8 @@ agp_i810_get_aperture(struct vga_pci_softc *sc)
return (64 * 1024 * 1024);
else
return (128 * 1024 * 1024);
+ } else { /* CHIP_I855 */
+ return (128 * 1024 * 1024);
}
}
@@ -280,7 +332,7 @@ agp_i810_set_aperture(struct vga_pci_softc *sc, u_int32_t aperture)
reg |= ((pcireg_t)miscc) << 16;
pci_conf_write(isc->bridge_pa.pa_pc,
isc->bridge_pa.pa_tag, AGP_I810_SMRAM, reg);
- } else { /* I830 */
+ } else if (isc->chiptype == CHIP_I830) {
u_int16_t gcc1;
if (aperture != (64 * 1024 * 1024) &&
@@ -301,6 +353,11 @@ agp_i810_set_aperture(struct vga_pci_softc *sc, u_int32_t aperture)
reg |= ((pcireg_t)gcc1) << 16;
pci_conf_write(isc->bridge_pa.pa_pc,
isc->bridge_pa.pa_tag, AGP_I830_GCC0, reg);
+ } else { /* CHIP_I855 */
+ if (aperture != (128 * 1024 * 1024)) {
+ printf("agp: bad aperture size %d\n", aperture);
+ return (EINVAL);
+ }
}
return (0);
@@ -376,11 +433,17 @@ agp_i810_alloc_memory(struct vga_pci_softc *sc, int type, vsize_t size)
struct agp_memory *mem;
int error;
+ if ((size & (AGP_PAGE_SIZE - 1)) != 0)
+ return 0;
+
+ if (sc->sc_allocated + size > sc->sc_maxmem)
+ return 0;
+
if (type == 1) {
/*
* Mapping local DRAM into GATT.
*/
- if (isc->chiptype == CHIP_I830 )
+ if (isc->chiptype != CHIP_I810 )
return (NULL);
if (size != isc->dcache_size)
return (NULL);
@@ -405,6 +468,10 @@ agp_i810_alloc_memory(struct vga_pci_softc *sc, int type, vsize_t size)
*/
mem->am_dmaseg = malloc(sizeof *mem->am_dmaseg, M_DEVBUF,
M_WAITOK);
+ if (mem->am_dmaseg == NULL) {
+ free(mem, M_DEVBUF);
+ return (NULL);
+ }
if ((error = agp_alloc_dmamem(sc->sc_dmat, size, 0,
&mem->am_dmamap, &mem->am_virtual, &mem->am_physical,
mem->am_dmaseg, 1, &mem->am_nseg)) != 0) {
diff --git a/sys/dev/pci/agpreg.h b/sys/dev/pci/agpreg.h
index 5e25b463832..e1c3b42faa3 100644
--- a/sys/dev/pci/agpreg.h
+++ b/sys/dev/pci/agpreg.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: agpreg.h,v 1.2 2003/03/19 20:06:28 millert Exp $ */
+/* $OpenBSD: agpreg.h,v 1.3 2004/01/20 19:30:41 grange Exp $ */
/* $NetBSD: agpreg.h,v 1.1 2001/09/10 10:01:02 fvdl Exp $ */
/*-
@@ -170,4 +170,20 @@
#define AGP_I830_GCC1_GMASIZE_64 0x01
#define AGP_I830_GCC1_GMASIZE_128 0x00
+
+/*
+ * Config registers for 852GM/855GM/865G device 0
+ */
+#define AGP_I855_GCC1 0x52
+#define AGP_I855_GCC1_DEV2 0x08
+#define AGP_I855_GCC1_DEV2_ENABLED 0x00
+#define AGP_I855_GCC1_DEV2_DISABLED 0x08
+#define AGP_I855_GCC1_GMS 0x70
+#define AGP_I855_GCC1_GMS_STOLEN_0M 0x00
+#define AGP_I855_GCC1_GMS_STOLEN_1M 0x10
+#define AGP_I855_GCC1_GMS_STOLEN_4M 0x20
+#define AGP_I855_GCC1_GMS_STOLEN_8M 0x30
+#define AGP_I855_GCC1_GMS_STOLEN_16M 0x40
+#define AGP_I855_GCC1_GMS_STOLEN_32M 0x50
+
#endif /* !_PCI_AGPREG_H_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 10:31:54 +0000