[AGP] Hopefully get the KT400 working in AGP3.0 mode.

drivers/char/agp/agp.h

@@ -33,6 +33,7 @@ extern struct agp_bridge_data agp_bridge;
 
 /* Generic routines. */
 void agp_generic_agp_enable(u32 mode);
+int agp_generic_agp_3_0_enable(u32 mode);
 int agp_generic_create_gatt_table(void);
 int agp_generic_free_gatt_table(void);
 agp_memory *agp_create_memory(int scratch_pages);

drivers/char/agp/generic-3.0.c

 #include <linux/list.h>
 #include <linux/pci.h>
-
-
-//#include <linux/pagemap.h>
-//#include <linux/miscdevice.h>
-//#include <linux/pm.h>
 #include <linux/agp_backend.h>
 
 #include "agp.h"
@@ -529,7 +524,7 @@ static int agp_3_0_node_enable(u32 mode, u32 minor)
  * (AGP 3.0 devices are required to operate as AGP 2.0 devices 
  * when not using 3.0 electricals.
  */
-void agp_generic_agp_3_0_enable(u32 mode)
+int agp_generic_agp_3_0_enable(u32 mode)
 {
 	u32 ncapid, major, minor, agp_3_0;
 
@@ -548,9 +543,9 @@ void agp_generic_agp_3_0_enable(u32 mode)
 		 */
 		if((agp_3_0 >> 3) & 0x1) {
 			agp_3_0_node_enable(mode, minor);
-			return;
+			return TRUE;
 		}
 	}
-	agp_generic_agp_enable(mode);
+	return FALSE;
 }
 

drivers/char/agp/i7x05-agp.c

@@ -87,6 +87,11 @@ static aper_size_info_16 intel_7505_sizes[7] =
 	{4, 1024, 0, 0xf3f}
 };
 
+static void i7505_setup (u32 mode)
+{
+	if ((agp_generic_agp_3_0_enable)==FALSE)
+		agp_generic_agp_enable(mode);
+}
 
 static int __init intel_7505_setup (struct pci_dev *pdev)
 {
@@ -102,7 +107,7 @@ static int __init intel_7505_setup (struct pci_dev *pdev)
 	agp_bridge.cleanup = intel_7505_cleanup;
 	agp_bridge.tlb_flush = intel_7505_tlbflush;
 	agp_bridge.mask_memory = intel_mask_memory;
-	agp_bridge.agp_enable = agp_generic_agp_3_0_enable;
+	agp_bridge.agp_enable = i7505_enable;
 	agp_bridge.cache_flush = global_cache_flush;
 	agp_bridge.create_gatt_table = agp_generic_create_gatt_table;
 	agp_bridge.free_gatt_table = agp_generic_free_gatt_table;

drivers/char/agp/via-agp.c

@@ -94,7 +94,7 @@ static struct gatt_mask via_generic_masks[] =
 	{.mask = 0x00000000, .type = 0}
 };
 
-int __init via_generic_setup (struct pci_dev *pdev)
+static int __init via_generic_setup (struct pci_dev *pdev)
 {
 	agp_bridge.masks = via_generic_masks;
 	agp_bridge.num_of_masks = 1;
@@ -124,7 +124,44 @@ int __init via_generic_setup (struct pci_dev *pdev)
 	return 0;
 }
 
-struct agp_device_ids via_agp_device_ids[] __initdata =
+
+static void via_kt400_enable(u32 mode)
+{
+	if ((agp_generic_agp_3_0_enable)==FALSE)
+	        agp_generic_agp_enable(mode);
+}
+
+static int __init via_kt400_setup(struct pci_dev *pdev)
+{
+	agp_bridge.masks = via_generic_masks;
+	agp_bridge.num_of_masks = 1;
+	agp_bridge.aperture_sizes = (void *) via_generic_sizes;
+	agp_bridge.size_type = U8_APER_SIZE;
+	agp_bridge.num_aperture_sizes = 7;
+	agp_bridge.dev_private_data = NULL;
+	agp_bridge.needs_scratch_page = FALSE;
+	agp_bridge.configure = via_configure;
+	agp_bridge.fetch_size = via_fetch_size;
+	agp_bridge.cleanup = via_cleanup;
+	agp_bridge.tlb_flush = via_tlbflush;
+	agp_bridge.mask_memory = via_mask_memory;
+	agp_bridge.agp_enable = agp_generic_agp_enable;
+	agp_bridge.cache_flush = global_cache_flush;
+	agp_bridge.create_gatt_table = agp_generic_create_gatt_table;
+	agp_bridge.free_gatt_table = agp_generic_free_gatt_table;
+	agp_bridge.insert_memory = agp_generic_insert_memory;
+	agp_bridge.remove_memory = agp_generic_remove_memory;
+	agp_bridge.alloc_by_type = agp_generic_alloc_by_type;
+	agp_bridge.free_by_type = agp_generic_free_by_type;
+	agp_bridge.agp_alloc_page = agp_generic_alloc_page;
+	agp_bridge.agp_destroy_page = agp_generic_destroy_page;
+	agp_bridge.suspend = agp_generic_suspend;
+	agp_bridge.resume = agp_generic_resume;
+	agp_bridge.cant_use_aperture = 0;
+	return 0;
+}
+
+static struct agp_device_ids via_agp_device_ids[] __initdata =
 {
 	{
 		.device_id	= PCI_DEVICE_ID_VIA_8501_0,
@@ -170,6 +207,7 @@ struct agp_device_ids via_agp_device_ids[] __initdata =
 		.device_id	= PCI_DEVICE_ID_VIA_8377_0,
 		.chipset	= VIA_APOLLO_KT400,
 		.chipset_name	= "Apollo Pro KT400",
+		.chipset_setup	= via_kt400_setup,
 	},
 	{
 		.device_id	= PCI_DEVICE_ID_VIA_8653_0,