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authorChristian König <christian.koenig@amd.com>2013-10-29 23:14:51 +0400
committerAlex Deucher <alexander.deucher@amd.com>2013-11-01 23:25:54 +0400
commitdb96bd25868c19d71c25cafefed7d0b00c4be641 (patch)
tree667c9a7d4922696ce4f3dc4ab87ea55c27302e56 /drivers
parent5b2906ecf4ceb6de5e889d367034113d1612bc75 (diff)
downloadlinux-db96bd25868c19d71c25cafefed7d0b00c4be641.tar.xz
drm/radeon: clear the page directory using the DMA
Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/radeon/radeon_gart.c34
1 files changed, 29 insertions, 5 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
index fd109d3cae66..8a83b89d4709 100644
--- a/drivers/gpu/drm/radeon/radeon_gart.c
+++ b/drivers/gpu/drm/radeon/radeon_gart.c
@@ -607,8 +607,8 @@ static int radeon_vm_evict(struct radeon_device *rdev, struct radeon_vm *vm)
*/
int radeon_vm_alloc_pt(struct radeon_device *rdev, struct radeon_vm *vm)
{
- unsigned pd_size, pts_size;
- u64 *pd_addr;
+ unsigned pd_size, pd_entries, pts_size;
+ struct radeon_ib ib;
int r;
if (vm == NULL) {
@@ -619,8 +619,10 @@ int radeon_vm_alloc_pt(struct radeon_device *rdev, struct radeon_vm *vm)
return 0;
}
-retry:
pd_size = radeon_vm_directory_size(rdev);
+ pd_entries = radeon_vm_num_pdes(rdev);
+
+retry:
r = radeon_sa_bo_new(rdev, &rdev->vm_manager.sa_manager,
&vm->page_directory, pd_size,
RADEON_VM_PTB_ALIGN_SIZE, false);
@@ -637,9 +639,31 @@ retry:
vm->pd_gpu_addr = radeon_sa_bo_gpu_addr(vm->page_directory);
/* Initially clear the page directory */
- pd_addr = radeon_sa_bo_cpu_addr(vm->page_directory);
- memset(pd_addr, 0, pd_size);
+ r = radeon_ib_get(rdev, R600_RING_TYPE_DMA_INDEX, &ib,
+ NULL, pd_entries * 2 + 64);
+ if (r) {
+ radeon_sa_bo_free(rdev, &vm->page_directory, vm->fence);
+ return r;
+ }
+
+ ib.length_dw = 0;
+
+ radeon_asic_vm_set_page(rdev, &ib, vm->pd_gpu_addr,
+ 0, pd_entries, 0, 0);
+
+ radeon_ib_sync_to(&ib, vm->fence);
+ r = radeon_ib_schedule(rdev, &ib, NULL);
+ if (r) {
+ radeon_ib_free(rdev, &ib);
+ radeon_sa_bo_free(rdev, &vm->page_directory, vm->fence);
+ return r;
+ }
+ radeon_fence_unref(&vm->fence);
+ vm->fence = radeon_fence_ref(ib.fence);
+ radeon_ib_free(rdev, &ib);
+ radeon_fence_unref(&vm->last_flush);
+ /* allocate page table array */
pts_size = radeon_vm_num_pdes(rdev) * sizeof(struct radeon_sa_bo *);
vm->page_tables = kzalloc(pts_size, GFP_KERNEL);