drm/radeon: preallocate mem for UVD create/destroy msg
llocating memory for UVD create and destroy messages can fail, which is
rather annoying when this happens in the middle of a GPU reset. Try to
avoid this condition by preallocating a page for those dummy messages.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c b/drivers/gpu/drm/radeon/radeon_uvd.c
index 1dedadd..5729e9b 100644
--- a/drivers/gpu/drm/radeon/radeon_uvd.c
+++ b/drivers/gpu/drm/radeon/radeon_uvd.c
@@ -138,7 +138,8 @@
}
bo_size = RADEON_GPU_PAGE_ALIGN(rdev->uvd_fw->size + 8) +
- RADEON_UVD_STACK_SIZE + RADEON_UVD_HEAP_SIZE;
+ RADEON_UVD_STACK_SIZE + RADEON_UVD_HEAP_SIZE +
+ RADEON_GPU_PAGE_SIZE;
r = radeon_bo_create(rdev, bo_size, PAGE_SIZE, true,
RADEON_GEM_DOMAIN_VRAM, 0, NULL, &rdev->uvd.vcpu_bo);
if (r) {
@@ -647,38 +648,16 @@
}
static int radeon_uvd_send_msg(struct radeon_device *rdev,
- int ring, struct radeon_bo *bo,
+ int ring, uint64_t addr,
struct radeon_fence **fence)
{
- struct ttm_validate_buffer tv;
- struct ww_acquire_ctx ticket;
- struct list_head head;
struct radeon_ib ib;
- uint64_t addr;
int i, r;
- memset(&tv, 0, sizeof(tv));
- tv.bo = &bo->tbo;
-
- INIT_LIST_HEAD(&head);
- list_add(&tv.head, &head);
-
- r = ttm_eu_reserve_buffers(&ticket, &head);
- if (r)
- return r;
-
- radeon_ttm_placement_from_domain(bo, RADEON_GEM_DOMAIN_VRAM);
- radeon_uvd_force_into_uvd_segment(bo, RADEON_GEM_DOMAIN_VRAM);
-
- r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
- if (r)
- goto err;
-
r = radeon_ib_get(rdev, ring, &ib, NULL, 64);
if (r)
- goto err;
+ return r;
- addr = radeon_bo_gpu_offset(bo);
ib.ptr[0] = PACKET0(UVD_GPCOM_VCPU_DATA0, 0);
ib.ptr[1] = addr;
ib.ptr[2] = PACKET0(UVD_GPCOM_VCPU_DATA1, 0);
@@ -690,19 +669,11 @@
ib.length_dw = 16;
r = radeon_ib_schedule(rdev, &ib, NULL, false);
- if (r)
- goto err;
- ttm_eu_fence_buffer_objects(&ticket, &head, ib.fence);
if (fence)
*fence = radeon_fence_ref(ib.fence);
radeon_ib_free(rdev, &ib);
- radeon_bo_unref(&bo);
- return 0;
-
-err:
- ttm_eu_backoff_reservation(&ticket, &head);
return r;
}
@@ -712,28 +683,19 @@
int radeon_uvd_get_create_msg(struct radeon_device *rdev, int ring,
uint32_t handle, struct radeon_fence **fence)
{
- struct radeon_bo *bo;
- uint32_t *msg;
+ /* we use the last page of the vcpu bo for the UVD message */
+ uint64_t offs = radeon_bo_size(rdev->uvd.vcpu_bo) -
+ RADEON_GPU_PAGE_SIZE;
+
+ uint32_t *msg = rdev->uvd.cpu_addr + offs;
+ uint64_t addr = rdev->uvd.gpu_addr + offs;
+
int r, i;
- r = radeon_bo_create(rdev, 1024, PAGE_SIZE, true,
- RADEON_GEM_DOMAIN_VRAM, 0, NULL, &bo);
+ r = radeon_bo_reserve(rdev->uvd.vcpu_bo, true);
if (r)
return r;
- r = radeon_bo_reserve(bo, false);
- if (r) {
- radeon_bo_unref(&bo);
- return r;
- }
-
- r = radeon_bo_kmap(bo, (void **)&msg);
- if (r) {
- radeon_bo_unreserve(bo);
- radeon_bo_unref(&bo);
- return r;
- }
-
/* stitch together an UVD create msg */
msg[0] = cpu_to_le32(0x00000de4);
msg[1] = cpu_to_le32(0x00000000);
@@ -749,37 +711,27 @@
for (i = 11; i < 1024; ++i)
msg[i] = cpu_to_le32(0x0);
- radeon_bo_kunmap(bo);
- radeon_bo_unreserve(bo);
-
- return radeon_uvd_send_msg(rdev, ring, bo, fence);
+ r = radeon_uvd_send_msg(rdev, ring, addr, fence);
+ radeon_bo_unreserve(rdev->uvd.vcpu_bo);
+ return r;
}
int radeon_uvd_get_destroy_msg(struct radeon_device *rdev, int ring,
uint32_t handle, struct radeon_fence **fence)
{
- struct radeon_bo *bo;
- uint32_t *msg;
+ /* we use the last page of the vcpu bo for the UVD message */
+ uint64_t offs = radeon_bo_size(rdev->uvd.vcpu_bo) -
+ RADEON_GPU_PAGE_SIZE;
+
+ uint32_t *msg = rdev->uvd.cpu_addr + offs;
+ uint64_t addr = rdev->uvd.gpu_addr + offs;
+
int r, i;
- r = radeon_bo_create(rdev, 1024, PAGE_SIZE, true,
- RADEON_GEM_DOMAIN_VRAM, 0, NULL, &bo);
+ r = radeon_bo_reserve(rdev->uvd.vcpu_bo, true);
if (r)
return r;
- r = radeon_bo_reserve(bo, false);
- if (r) {
- radeon_bo_unref(&bo);
- return r;
- }
-
- r = radeon_bo_kmap(bo, (void **)&msg);
- if (r) {
- radeon_bo_unreserve(bo);
- radeon_bo_unref(&bo);
- return r;
- }
-
/* stitch together an UVD destroy msg */
msg[0] = cpu_to_le32(0x00000de4);
msg[1] = cpu_to_le32(0x00000002);
@@ -788,10 +740,9 @@
for (i = 4; i < 1024; ++i)
msg[i] = cpu_to_le32(0x0);
- radeon_bo_kunmap(bo);
- radeon_bo_unreserve(bo);
-
- return radeon_uvd_send_msg(rdev, ring, bo, fence);
+ r = radeon_uvd_send_msg(rdev, ring, addr, fence);
+ radeon_bo_unreserve(rdev->uvd.vcpu_bo);
+ return r;
}
/**