@@ -881,12 +881,15 @@ void r600_pcie_gart_tlb_flush(struct radeon_device *rdev)
u32 tmp;
/* flush hdp cache so updates hit vram */
- if ((rdev->family >= CHIP_RV770) && (rdev->family <= CHIP_RV740)) {
+ if ((rdev->family >= CHIP_RV770) && (rdev->family <= CHIP_RV740) &&
+ !(rdev->flags & RADEON_IS_AGP)) {
void __iomem *ptr = (void *)rdev->gart.table.vram.ptr;
u32 tmp;
/* r7xx hw bug. write to HDP_DEBUG1 followed by fb read
* rather than write to HDP_REG_COHERENCY_FLUSH_CNTL
+ * This seems to cause problems on some AGP cards. Just use the old
+ * method for them.
*/
WREG32(HDP_DEBUG1, 0);
tmp = readl((void __iomem *)ptr);
@@ -3508,10 +3511,12 @@ int r600_debugfs_mc_info_init(struct radeon_device *rdev)
void r600_ioctl_wait_idle(struct radeon_device *rdev, struct radeon_bo *bo)
{
/* r7xx hw bug. write to HDP_DEBUG1 followed by fb read
- * rather than write to HDP_REG_COHERENCY_FLUSH_CNTL
+ * rather than write to HDP_REG_COHERENCY_FLUSH_CNTL.
+ * This seems to cause problems on some AGP cards. Just use the old
+ * method for them.
*/
if ((rdev->family >= CHIP_RV770) && (rdev->family <= CHIP_RV740) &&
- rdev->vram_scratch.ptr) {
+ rdev->vram_scratch.ptr && !(rdev->flags & RADEON_IS_AGP)) {
void __iomem *ptr = (void *)rdev->vram_scratch.ptr;
u32 tmp;