@@ -506,76 +506,19 @@ static unsigned int intel_gtt_stolen_entries(void)
u8 rdct;
int local = 0;
static const int ddt[4] = { 0, 16, 32, 64 };
- int size; /* reserved space (in kb) at the top of stolen memory */
unsigned int overhead_entries, stolen_entries;
unsigned int stolen_size = 0;
pci_read_config_word(intel_private.bridge_dev,
I830_GMCH_CTRL, &gmch_ctrl);
- if (IS_I965) {
- u32 pgetbl_ctl;
- pgetbl_ctl = readl(intel_private.registers+I810_PGETBL_CTL);
-
- /* The 965 has a field telling us the size of the GTT,
- * which may be larger than what is necessary to map the
- * aperture.
- */
- switch (pgetbl_ctl & I965_PGETBL_SIZE_MASK) {
- case I965_PGETBL_SIZE_128KB:
- size = 128;
- break;
- case I965_PGETBL_SIZE_256KB:
- size = 256;
- break;
- case I965_PGETBL_SIZE_512KB:
- size = 512;
- break;
- case I965_PGETBL_SIZE_1MB:
- size = 1024;
- break;
- case I965_PGETBL_SIZE_2MB:
- size = 2048;
- break;
- case I965_PGETBL_SIZE_1_5MB:
- size = 1024 + 512;
- break;
- default:
- dev_info(&intel_private.pcidev->dev,
- "unknown page table size, assuming 512KB\n");
- size = 512;
- }
- size += 4; /* add in BIOS popup space */
- } else if (IS_G33 && !IS_PINEVIEW) {
- /* G33's GTT size defined in gmch_ctrl */
- switch (gmch_ctrl & G33_PGETBL_SIZE_MASK) {
- case G33_PGETBL_SIZE_1M:
- size = 1024;
- break;
- case G33_PGETBL_SIZE_2M:
- size = 2048;
- break;
- default:
- dev_info(&intel_private.bridge_dev->dev,
- "unknown page table size 0x%x, assuming 512KB\n",
- (gmch_ctrl & G33_PGETBL_SIZE_MASK));
- size = 512;
- }
- size += 4;
- } else if (IS_G4X || IS_PINEVIEW) {
- /* On 4 series hardware, GTT stolen is separate from graphics
- * stolen, ignore it in stolen gtt entries counting. However,
- * 4KB of the stolen memory doesn't get mapped to the GTT.
- */
- size = 4;
- } else {
- /* On previous hardware, the GTT size was just what was
- * required to map the aperture.
- */
- size = agp_bridge->driver->fetch_size() + 4;
- }
+ if (IS_G4X || IS_PINEVIEW)
+ overhead_entries = 0;
+ else
+ overhead_entries = intel_private.base.gtt_mappable_entries
+ / 1024;
- overhead_entries = size/4;
+ overhead_entries += 1; /* BIOS popup */
if (intel_private.bridge_dev->device == PCI_DEVICE_ID_INTEL_82830_HB ||
intel_private.bridge_dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) {
@@ -724,7 +667,72 @@ static unsigned int intel_gtt_stolen_entries(void)
static unsigned int intel_gtt_total_entries(void)
{
- return 0;
+ int size;
+ u16 gmch_ctrl;
+
+ if (IS_I965) {
+ u32 pgetbl_ctl;
+ pgetbl_ctl = readl(intel_private.registers+I810_PGETBL_CTL);
+
+ /* The 965 has a field telling us the size of the GTT,
+ * which may be larger than what is necessary to map the
+ * aperture.
+ */
+ switch (pgetbl_ctl & I965_PGETBL_SIZE_MASK) {
+ case I965_PGETBL_SIZE_128KB:
+ size = 128;
+ break;
+ case I965_PGETBL_SIZE_256KB:
+ size = 256;
+ break;
+ case I965_PGETBL_SIZE_512KB:
+ size = 512;
+ break;
+ case I965_PGETBL_SIZE_1MB:
+ size = 1024;
+ break;
+ case I965_PGETBL_SIZE_2MB:
+ size = 2048;
+ break;
+ case I965_PGETBL_SIZE_1_5MB:
+ size = 1024 + 512;
+ break;
+ default:
+ dev_info(&intel_private.pcidev->dev,
+ "unknown page table size, assuming 512KB\n");
+ size = 512;
+ }
+ size += 4; /* add in BIOS popup space */
+ } else if (IS_G33 && !IS_PINEVIEW) {
+ /* G33's GTT size defined in gmch_ctrl */
+ switch (gmch_ctrl & G33_PGETBL_SIZE_MASK) {
+ case G33_PGETBL_SIZE_1M:
+ size = 1024;
+ break;
+ case G33_PGETBL_SIZE_2M:
+ size = 2048;
+ break;
+ default:
+ dev_info(&intel_private.bridge_dev->dev,
+ "unknown page table size 0x%x, assuming 512KB\n",
+ (gmch_ctrl & G33_PGETBL_SIZE_MASK));
+ size = 512;
+ }
+ size += 4;
+ } else if (IS_G4X || IS_PINEVIEW) {
+ /* On 4 series hardware, GTT stolen is separate from graphics
+ * stolen, ignore it in stolen gtt entries counting. However,
+ * 4KB of the stolen memory doesn't get mapped to the GTT.
+ */
+ size = 4;
+ } else {
+ /* On previous hardware, the GTT size was just what was
+ * required to map the aperture.
+ */
+ size = agp_bridge->driver->fetch_size() + 4;
+ }
+
+ return size/KB(4);
}
static unsigned int intel_gtt_mappable_entries(void)