[AGPGART] intel_agp: Add support for G33, Q33 and Q35 chipsets

This patch adds pci ids for G33, Q33 and Q35 chips, and update with new
GTT size and stolen mem size detect method on these chips.

Signed-off-by: Wang Zhenyu <zhenyu.z.wang@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>

1 files changed, 77 insertions, 2 deletions

diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 3c4a1c2a25b..d383168b75f 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -22,6 +22,12 @@
 #define PCI_DEVICE_ID_INTEL_82965GM_IG      0x2A02
 #define PCI_DEVICE_ID_INTEL_82965GME_IG     0x2A12
 #define PCI_DEVICE_ID_INTEL_82945GME_IG     0x27AE
+#define PCI_DEVICE_ID_INTEL_G33_HB          0x29C0
+#define PCI_DEVICE_ID_INTEL_G33_IG          0x29C2
+#define PCI_DEVICE_ID_INTEL_Q35_HB          0x29B0
+#define PCI_DEVICE_ID_INTEL_Q35_IG          0x29B2
+#define PCI_DEVICE_ID_INTEL_Q33_HB          0x29D0
+#define PCI_DEVICE_ID_INTEL_Q33_IG          0x29D2
 
 #define IS_I965 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82946GZ_HB || \
                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_1_HB || \
@@ -29,6 +35,9 @@
                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_HB || \
                  agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GM_HB)
 
+#define IS_G33 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G33_HB || \
+		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q35_HB || \
+		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q33_HB)
 
 extern int agp_memory_reserved;
 
@@ -55,6 +64,8 @@ extern int agp_memory_reserved;
 #define I915_PTEADDR	0x1C
 #define I915_GMCH_GMS_STOLEN_48M	(0x6 << 4)
 #define I915_GMCH_GMS_STOLEN_64M	(0x7 << 4)
+#define G33_GMCH_GMS_STOLEN_128M       (0x8 << 4)
+#define G33_GMCH_GMS_STOLEN_256M       (0x9 << 4)
 
 /* Intel 965G registers */
 #define I965_MSAC 0x62
@@ -448,6 +459,22 @@ static void intel_i830_init_gtt_entries(void)
 			size = 512;
 		}
 		size += 4; /* add in BIOS popup space */
+	} else if (IS_G33) {
+	/* 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:
+			printk(KERN_INFO PFX "Unknown page table size 0x%x, "
+				"assuming 512KB\n",
+				(gmch_ctrl & G33_PGETBL_SIZE_MASK));
+			size = 512;
+		}
+		size += 4;
 	} else {
 		/* On previous hardware, the GTT size was just what was
 		 * required to map the aperture.
@@ -499,7 +526,8 @@ static void intel_i830_init_gtt_entries(void)
 			if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB ||
 			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB ||
 			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || IS_I965 )
+			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB ||
+			    IS_I965 || IS_G33)
 				gtt_entries = MB(48) - KB(size);
 			else
 				gtt_entries = 0;
@@ -509,10 +537,24 @@ static void intel_i830_init_gtt_entries(void)
 			if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB ||
 			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB ||
 			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || IS_I965)
+			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB ||
+			    IS_I965 || IS_G33)
 				gtt_entries = MB(64) - KB(size);
 			else
 				gtt_entries = 0;
+			break;
+		case G33_GMCH_GMS_STOLEN_128M:
+			if (IS_G33)
+				gtt_entries = MB(128) - KB(size);
+			else
+				gtt_entries = 0;
+			break;
+		case G33_GMCH_GMS_STOLEN_256M:
+			if (IS_G33)
+				gtt_entries = MB(256) - KB(size);
+			else
+				gtt_entries = 0;
+			break;
 		default:
 			gtt_entries = 0;
 			break;
@@ -1719,6 +1761,30 @@ static const struct agp_bridge_driver intel_7505_driver = {
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 };
 
+static const struct agp_bridge_driver intel_g33_driver = {
+	.owner                  = THIS_MODULE,
+	.aperture_sizes         = intel_i830_sizes,
+	.size_type              = FIXED_APER_SIZE,
+	.num_aperture_sizes     = 4,
+	.needs_scratch_page     = TRUE,
+	.configure              = intel_i915_configure,
+	.fetch_size             = intel_i9xx_fetch_size,
+	.cleanup                = intel_i915_cleanup,
+	.tlb_flush              = intel_i810_tlbflush,
+	.mask_memory            = intel_i965_mask_memory,
+	.masks                  = intel_i810_masks,
+	.agp_enable             = intel_i810_agp_enable,
+	.cache_flush            = global_cache_flush,
+	.create_gatt_table      = intel_i915_create_gatt_table,
+	.free_gatt_table        = intel_i830_free_gatt_table,
+	.insert_memory          = intel_i915_insert_entries,
+	.remove_memory          = intel_i915_remove_entries,
+	.alloc_by_type          = intel_i830_alloc_by_type,
+	.free_by_type           = intel_i810_free_by_type,
+	.agp_alloc_page         = agp_generic_alloc_page,
+	.agp_destroy_page       = agp_generic_destroy_page,
+	.agp_type_to_mask_type  = intel_i830_type_to_mask_type,
+};
 
 static int find_gmch(u16 device)
 {
@@ -1799,6 +1865,12 @@ static const struct intel_driver_description {
 		&intel_845_driver, &intel_i965_driver },
 	{ PCI_DEVICE_ID_INTEL_7505_0, 0, "E7505", &intel_7505_driver, NULL },
 	{ PCI_DEVICE_ID_INTEL_7205_0, 0, "E7205", &intel_7505_driver, NULL },
+	{ PCI_DEVICE_ID_INTEL_G33_HB, PCI_DEVICE_ID_INTEL_G33_IG, "G33",
+		&intel_845_driver, &intel_g33_driver },
+	{ PCI_DEVICE_ID_INTEL_Q35_HB, PCI_DEVICE_ID_INTEL_Q35_IG, "Q35",
+		&intel_845_driver, &intel_g33_driver },
+	{ PCI_DEVICE_ID_INTEL_Q33_HB, PCI_DEVICE_ID_INTEL_Q33_IG, "Q33",
+		&intel_845_driver, &intel_g33_driver },
 	{ 0, 0, NULL, NULL, NULL }
 };
 
@@ -1976,6 +2048,9 @@ static struct pci_device_id agp_intel_pci_table[] = {
 	ID(PCI_DEVICE_ID_INTEL_82965Q_HB),
 	ID(PCI_DEVICE_ID_INTEL_82965G_HB),
 	ID(PCI_DEVICE_ID_INTEL_82965GM_HB),
+	ID(PCI_DEVICE_ID_INTEL_G33_HB),
+	ID(PCI_DEVICE_ID_INTEL_Q35_HB),
+	ID(PCI_DEVICE_ID_INTEL_Q33_HB),
 	{ }
 };