@@ -150,6 +150,25 @@ extern int agp_memory_reserved;
#define INTEL_I7505_AGPCTRL 0x70
#define INTEL_I7505_MCHCFG 0x50
+#define SNB_GMCH_CTRL 0x50
+#define SNB_GMCH_GMS_STOLEN_MASK 0xF8
+#define SNB_GMCH_GMS_STOLEN_32M (1 << 3)
+#define SNB_GMCH_GMS_STOLEN_64M (2 << 3)
+#define SNB_GMCH_GMS_STOLEN_96M (3 << 3)
+#define SNB_GMCH_GMS_STOLEN_128M (4 << 3)
+#define SNB_GMCH_GMS_STOLEN_160M (5 << 3)
+#define SNB_GMCH_GMS_STOLEN_192M (6 << 3)
+#define SNB_GMCH_GMS_STOLEN_224M (7 << 3)
+#define SNB_GMCH_GMS_STOLEN_256M (8 << 3)
+#define SNB_GMCH_GMS_STOLEN_288M (9 << 3)
+#define SNB_GMCH_GMS_STOLEN_320M (0xa << 3)
+#define SNB_GMCH_GMS_STOLEN_352M (0xb << 3)
+#define SNB_GMCH_GMS_STOLEN_384M (0xc << 3)
+#define SNB_GMCH_GMS_STOLEN_416M (0xd << 3)
+#define SNB_GMCH_GMS_STOLEN_448M (0xe << 3)
+#define SNB_GMCH_GMS_STOLEN_480M (0xf << 3)
+#define SNB_GMCH_GMS_STOLEN_512M (0x10 << 3)
+
static const struct aper_size_info_fixed intel_i810_sizes[] =
{
{64, 16384, 4},
@@ -621,7 +640,7 @@ static struct aper_size_info_fixed intel_i830_sizes[] =
static void intel_i830_init_gtt_entries(void)
{
u16 gmch_ctrl;
- int gtt_entries;
+ int gtt_entries = 0;
u8 rdct;
int local = 0;
static const int ddt[4] = { 0, 16, 32, 64 };
@@ -715,10 +734,61 @@ static void intel_i830_init_gtt_entries(void)
}
} else if (agp_bridge->dev->device ==
PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB) {
- /* XXX: This is what my A1 silicon has. What's the right
- * answer?
+ /*
+ * SandyBridge has new memory control reg at 0x50.w
*/
- gtt_entries = MB(64) - KB(size);
+ u16 snb_gmch_ctl;
+ pci_read_config_word(intel_private.pcidev, SNB_GMCH_CTRL, &snb_gmch_ctl);
+ switch (snb_gmch_ctl & SNB_GMCH_GMS_STOLEN_MASK) {
+ case SNB_GMCH_GMS_STOLEN_32M:
+ gtt_entries = MB(32) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_64M:
+ gtt_entries = MB(64) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_96M:
+ gtt_entries = MB(96) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_128M:
+ gtt_entries = MB(128) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_160M:
+ gtt_entries = MB(160) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_192M:
+ gtt_entries = MB(192) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_224M:
+ gtt_entries = MB(224) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_256M:
+ gtt_entries = MB(256) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_288M:
+ gtt_entries = MB(288) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_320M:
+ gtt_entries = MB(320) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_352M:
+ gtt_entries = MB(352) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_384M:
+ gtt_entries = MB(384) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_416M:
+ gtt_entries = MB(416) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_448M:
+ gtt_entries = MB(448) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_480M:
+ gtt_entries = MB(480) - KB(size);
+ break;
+ case SNB_GMCH_GMS_STOLEN_512M:
+ gtt_entries = MB(512) - KB(size);
+ break;
+ }
} else {
switch (gmch_ctrl & I855_GMCH_GMS_MASK) {
case I855_GMCH_GMS_STOLEN_1M:
@@ -1099,60 +1099,118 @@ static int i915_probe_agp(struct drm_device *dev, uint32_t *aperture_size,
else
overhead = (*aperture_size / 1024) + 4096;
- switch (tmp & INTEL_GMCH_GMS_MASK) {
- case INTEL_855_GMCH_GMS_DISABLED:
- /* XXX: This is what my A1 silicon has. */
- if (IS_GEN6(dev)) {
+ if (IS_GEN6(dev)) {
+ /* SNB has memory control reg at 0x50.w */
+ pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &tmp);
+
+ switch (tmp & SNB_GMCH_GMS_STOLEN_MASK) {
+ case INTEL_855_GMCH_GMS_DISABLED:
+ DRM_ERROR("video memory is disabled\n");
+ return -1;
+ case SNB_GMCH_GMS_STOLEN_32M:
+ stolen = 32 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_64M:
stolen = 64 * 1024 * 1024;
- } else {
+ break;
+ case SNB_GMCH_GMS_STOLEN_96M:
+ stolen = 96 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_128M:
+ stolen = 128 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_160M:
+ stolen = 160 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_192M:
+ stolen = 192 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_224M:
+ stolen = 224 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_256M:
+ stolen = 256 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_288M:
+ stolen = 288 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_320M:
+ stolen = 320 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_352M:
+ stolen = 352 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_384M:
+ stolen = 384 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_416M:
+ stolen = 416 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_448M:
+ stolen = 448 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_480M:
+ stolen = 480 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_512M:
+ stolen = 512 * 1024 * 1024;
+ break;
+ default:
+ DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
+ tmp & SNB_GMCH_GMS_STOLEN_MASK);
+ return -1;
+ }
+ } else {
+ switch (tmp & INTEL_GMCH_GMS_MASK) {
+ case INTEL_855_GMCH_GMS_DISABLED:
DRM_ERROR("video memory is disabled\n");
return -1;
+ case INTEL_855_GMCH_GMS_STOLEN_1M:
+ stolen = 1 * 1024 * 1024;
+ break;
+ case INTEL_855_GMCH_GMS_STOLEN_4M:
+ stolen = 4 * 1024 * 1024;
+ break;
+ case INTEL_855_GMCH_GMS_STOLEN_8M:
+ stolen = 8 * 1024 * 1024;
+ break;
+ case INTEL_855_GMCH_GMS_STOLEN_16M:
+ stolen = 16 * 1024 * 1024;
+ break;
+ case INTEL_855_GMCH_GMS_STOLEN_32M:
+ stolen = 32 * 1024 * 1024;
+ break;
+ case INTEL_915G_GMCH_GMS_STOLEN_48M:
+ stolen = 48 * 1024 * 1024;
+ break;
+ case INTEL_915G_GMCH_GMS_STOLEN_64M:
+ stolen = 64 * 1024 * 1024;
+ break;
+ case INTEL_GMCH_GMS_STOLEN_128M:
+ stolen = 128 * 1024 * 1024;
+ break;
+ case INTEL_GMCH_GMS_STOLEN_256M:
+ stolen = 256 * 1024 * 1024;
+ break;
+ case INTEL_GMCH_GMS_STOLEN_96M:
+ stolen = 96 * 1024 * 1024;
+ break;
+ case INTEL_GMCH_GMS_STOLEN_160M:
+ stolen = 160 * 1024 * 1024;
+ break;
+ case INTEL_GMCH_GMS_STOLEN_224M:
+ stolen = 224 * 1024 * 1024;
+ break;
+ case INTEL_GMCH_GMS_STOLEN_352M:
+ stolen = 352 * 1024 * 1024;
+ break;
+ default:
+ DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
+ tmp & INTEL_GMCH_GMS_MASK);
+ return -1;
}
- break;
- case INTEL_855_GMCH_GMS_STOLEN_1M:
- stolen = 1 * 1024 * 1024;
- break;
- case INTEL_855_GMCH_GMS_STOLEN_4M:
- stolen = 4 * 1024 * 1024;
- break;
- case INTEL_855_GMCH_GMS_STOLEN_8M:
- stolen = 8 * 1024 * 1024;
- break;
- case INTEL_855_GMCH_GMS_STOLEN_16M:
- stolen = 16 * 1024 * 1024;
- break;
- case INTEL_855_GMCH_GMS_STOLEN_32M:
- stolen = 32 * 1024 * 1024;
- break;
- case INTEL_915G_GMCH_GMS_STOLEN_48M:
- stolen = 48 * 1024 * 1024;
- break;
- case INTEL_915G_GMCH_GMS_STOLEN_64M:
- stolen = 64 * 1024 * 1024;
- break;
- case INTEL_GMCH_GMS_STOLEN_128M:
- stolen = 128 * 1024 * 1024;
- break;
- case INTEL_GMCH_GMS_STOLEN_256M:
- stolen = 256 * 1024 * 1024;
- break;
- case INTEL_GMCH_GMS_STOLEN_96M:
- stolen = 96 * 1024 * 1024;
- break;
- case INTEL_GMCH_GMS_STOLEN_160M:
- stolen = 160 * 1024 * 1024;
- break;
- case INTEL_GMCH_GMS_STOLEN_224M:
- stolen = 224 * 1024 * 1024;
- break;
- case INTEL_GMCH_GMS_STOLEN_352M:
- stolen = 352 * 1024 * 1024;
- break;
- default:
- DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
- tmp & INTEL_GMCH_GMS_MASK);
- return -1;
}
+
*preallocated_size = stolen - overhead;
*start = overhead;
@@ -53,6 +53,25 @@
#define INTEL_GMCH_GMS_STOLEN_224M (0xc << 4)
#define INTEL_GMCH_GMS_STOLEN_352M (0xd << 4)
+#define SNB_GMCH_CTRL 0x50
+#define SNB_GMCH_GMS_STOLEN_MASK 0xF8
+#define SNB_GMCH_GMS_STOLEN_32M (1 << 3)
+#define SNB_GMCH_GMS_STOLEN_64M (2 << 3)
+#define SNB_GMCH_GMS_STOLEN_96M (3 << 3)
+#define SNB_GMCH_GMS_STOLEN_128M (4 << 3)
+#define SNB_GMCH_GMS_STOLEN_160M (5 << 3)
+#define SNB_GMCH_GMS_STOLEN_192M (6 << 3)
+#define SNB_GMCH_GMS_STOLEN_224M (7 << 3)
+#define SNB_GMCH_GMS_STOLEN_256M (8 << 3)
+#define SNB_GMCH_GMS_STOLEN_288M (9 << 3)
+#define SNB_GMCH_GMS_STOLEN_320M (0xa << 3)
+#define SNB_GMCH_GMS_STOLEN_352M (0xb << 3)
+#define SNB_GMCH_GMS_STOLEN_384M (0xc << 3)
+#define SNB_GMCH_GMS_STOLEN_416M (0xd << 3)
+#define SNB_GMCH_GMS_STOLEN_448M (0xe << 3)
+#define SNB_GMCH_GMS_STOLEN_480M (0xf << 3)
+#define SNB_GMCH_GMS_STOLEN_512M (0x10 << 3)
+
/* PCI config space */
#define HPLLCC 0xc0 /* 855 only */