[AGPGART] 945GM support for agpgart

Here's a very small diff for 945GM support for agpgart.

Patch against 2.6.15.

From: Alan Hourihane <alanh@fairlite.demon.co.uk>
Signed-off-by: Dave Jones <davej@redhat.com>

drivers/char/agp/intel-agp.c

@@ -422,7 +422,8 @@ static void intel_i830_init_gtt_entries(void)
 			/* Check it's really I915G */
 			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_82945G_HB ||
+			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB)
 				gtt_entries = MB(48) - KB(size);
 			else
 				gtt_entries = 0;
@@ -431,7 +432,8 @@ static void intel_i830_init_gtt_entries(void)
 			/* Check it's really I915G */
 			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_82945G_HB ||
+			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB)
 				gtt_entries = MB(64) - KB(size);
 			else
 				gtt_entries = 0;
@@ -1681,6 +1683,14 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
 		}
 		name = "945G";
 		break;
+	case PCI_DEVICE_ID_INTEL_82945GM_HB:
+		if (find_i830(PCI_DEVICE_ID_INTEL_82945GM_IG)) {
+			bridge->driver = &intel_915_driver;
+		} else {
+			bridge->driver = &intel_845_driver;
+		}
+		name = "945GM";
+		break;
 	case PCI_DEVICE_ID_INTEL_7505_0:
 		bridge->driver = &intel_7505_driver;
 		name = "E7505";
@@ -1821,6 +1831,7 @@ static struct pci_device_id agp_intel_pci_table[] = {
 	ID(PCI_DEVICE_ID_INTEL_82915G_HB),
 	ID(PCI_DEVICE_ID_INTEL_82915GM_HB),
 	ID(PCI_DEVICE_ID_INTEL_82945G_HB),
+	ID(PCI_DEVICE_ID_INTEL_82945GM_HB),
 	{ }
 };
 

include/linux/pci_ids.h

@@ -2084,6 +2084,8 @@
 #define PCI_DEVICE_ID_INTEL_82915GM_IG	0x2592
 #define PCI_DEVICE_ID_INTEL_82945G_HB	0x2770
 #define PCI_DEVICE_ID_INTEL_82945G_IG	0x2772
+#define PCI_DEVICE_ID_INTEL_82945GM_HB	0x27A0
+#define PCI_DEVICE_ID_INTEL_82945GM_IG	0x27A2
 #define PCI_DEVICE_ID_INTEL_ICH6_0	0x2640
 #define PCI_DEVICE_ID_INTEL_ICH6_1	0x2641
 #define PCI_DEVICE_ID_INTEL_ICH6_2	0x2642