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path: root/drivers/char/agp/amd-k7-agp.c
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Diffstat (limited to 'drivers/char/agp/amd-k7-agp.c')
-rw-r--r--drivers/char/agp/amd-k7-agp.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c
index a7637d7..b6b1568 100644
--- a/drivers/char/agp/amd-k7-agp.c
+++ b/drivers/char/agp/amd-k7-agp.c
@@ -142,6 +142,7 @@ static int amd_create_gatt_table(struct agp_bridge_data *bridge)
{
struct aper_size_info_lvl2 *value;
struct amd_page_map page_dir;
+ unsigned long __iomem *cur_gatt;
unsigned long addr;
int retval;
u32 temp;
@@ -178,6 +179,13 @@ static int amd_create_gatt_table(struct agp_bridge_data *bridge)
readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr)); /* PCI Posting. */
}
+ for (i = 0; i < value->num_entries; i++) {
+ addr = (i * PAGE_SIZE) + agp_bridge->gart_bus_addr;
+ cur_gatt = GET_GATT(addr);
+ writel(agp_bridge->scratch_page, cur_gatt+GET_GATT_OFF(addr));
+ readl(cur_gatt+GET_GATT_OFF(addr)); /* PCI Posting. */
+ }
+
return 0;
}
@@ -375,6 +383,7 @@ static const struct agp_bridge_driver amd_irongate_driver = {
.aperture_sizes = amd_irongate_sizes,
.size_type = LVL2_APER_SIZE,
.num_aperture_sizes = 7,
+ .needs_scratch_page = true,
.configure = amd_irongate_configure,
.fetch_size = amd_irongate_fetch_size,
.cleanup = amd_irongate_cleanup,