drm/amdgpu: UVD avoid memory allocation during IB test

move BO allocation in sw_init.
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c

@@ -134,6 +134,51 @@ MODULE_FIRMWARE(FIRMWARE_VEGA12);
 MODULE_FIRMWARE(FIRMWARE_VEGA20);
 
 static void amdgpu_uvd_idle_work_handler(struct work_struct *work);
+static void amdgpu_uvd_force_into_uvd_segment(struct amdgpu_bo *abo);
+
+static int amdgpu_uvd_create_msg_bo_helper(struct amdgpu_device *adev,
+					   uint32_t size,
+					   struct amdgpu_bo **bo_ptr)
+{
+	struct ttm_operation_ctx ctx = { true, false };
+	struct amdgpu_bo *bo = NULL;
+	void *addr;
+	int r;
+
+	r = amdgpu_bo_create_reserved(adev, size, PAGE_SIZE,
+				      AMDGPU_GEM_DOMAIN_GTT,
+				      &bo, NULL, &addr);
+	if (r)
+		return r;
+
+	if (adev->uvd.address_64_bit)
+		goto succ;
+
+	amdgpu_bo_kunmap(bo);
+	amdgpu_bo_unpin(bo);
+	amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_VRAM);
+	amdgpu_uvd_force_into_uvd_segment(bo);
+	r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
+	if (r)
+		goto err;
+	r = amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_VRAM);
+	if (r)
+		goto err_pin;
+	r = amdgpu_bo_kmap(bo, &addr);
+	if (r)
+		goto err_kmap;
+succ:
+	amdgpu_bo_unreserve(bo);
+	*bo_ptr = bo;
+	return 0;
+err_kmap:
+	amdgpu_bo_unpin(bo);
+err_pin:
+err:
+	amdgpu_bo_unreserve(bo);
+	amdgpu_bo_unref(&bo);
+	return r;
+}
 
 int amdgpu_uvd_sw_init(struct amdgpu_device *adev)
 {
@@ -302,6 +347,10 @@ int amdgpu_uvd_sw_init(struct amdgpu_device *adev)
 	if (!amdgpu_device_ip_block_version_cmp(adev, AMD_IP_BLOCK_TYPE_UVD, 5, 0))
 		adev->uvd.address_64_bit = true;
 
+	r = amdgpu_uvd_create_msg_bo_helper(adev, 128 << 10, &adev->uvd.ib_bo);
+	if (r)
+		return r;
+
 	switch (adev->asic_type) {
 	case CHIP_TONGA:
 		adev->uvd.use_ctx_buf = adev->uvd.fw_version >= FW_1_65_10;
@@ -324,6 +373,7 @@ int amdgpu_uvd_sw_init(struct amdgpu_device *adev)
 
 int amdgpu_uvd_sw_fini(struct amdgpu_device *adev)
 {
+	void *addr = amdgpu_bo_kptr(adev->uvd.ib_bo);
 	int i, j;
 
 	drm_sched_entity_destroy(&adev->uvd.entity);
@@ -342,6 +392,7 @@ int amdgpu_uvd_sw_fini(struct amdgpu_device *adev)
 		for (i = 0; i < AMDGPU_MAX_UVD_ENC_RINGS; ++i)
 			amdgpu_ring_fini(&adev->uvd.inst[j].ring_enc[i]);
 	}
+	amdgpu_bo_free_kernel(&adev->uvd.ib_bo, NULL, &addr);
 	release_firmware(adev->uvd.fw);
 
 	return 0;
@@ -1080,23 +1131,10 @@ static int amdgpu_uvd_send_msg(struct amdgpu_ring *ring, struct amdgpu_bo *bo,
 	unsigned offset_idx = 0;
 	unsigned offset[3] = { UVD_BASE_SI, 0, 0 };
 
-	amdgpu_bo_kunmap(bo);
-	amdgpu_bo_unpin(bo);
-
-	if (!ring->adev->uvd.address_64_bit) {
-		struct ttm_operation_ctx ctx = { true, false };
-
-		amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_VRAM);
-		amdgpu_uvd_force_into_uvd_segment(bo);
-		r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
-		if (r)
-			goto err;
-	}
-
 	r = amdgpu_job_alloc_with_ib(adev, 64, direct ? AMDGPU_IB_POOL_DIRECT :
 				     AMDGPU_IB_POOL_DELAYED, &job);
 	if (r)
-		goto err;
+		return r;
 
 	if (adev->asic_type >= CHIP_VEGA10) {
 		offset_idx = 1 + ring->me;
@@ -1147,9 +1185,9 @@ static int amdgpu_uvd_send_msg(struct amdgpu_ring *ring, struct amdgpu_bo *bo,
 			goto err_free;
 	}
 
+	amdgpu_bo_reserve(bo, true);
 	amdgpu_bo_fence(bo, f, false);
 	amdgpu_bo_unreserve(bo);
-	amdgpu_bo_unref(&bo);
 
 	if (fence)
 		*fence = dma_fence_get(f);
@@ -1159,10 +1197,6 @@ static int amdgpu_uvd_send_msg(struct amdgpu_ring *ring, struct amdgpu_bo *bo,
 
 err_free:
 	amdgpu_job_free(job);
-
-err:
-	amdgpu_bo_unreserve(bo);
-	amdgpu_bo_unref(&bo);
 	return r;
 }
 
@@ -1173,16 +1207,11 @@ int amdgpu_uvd_get_create_msg(struct amdgpu_ring *ring, uint32_t handle,
 			      struct dma_fence **fence)
 {
 	struct amdgpu_device *adev = ring->adev;
-	struct amdgpu_bo *bo = NULL;
+	struct amdgpu_bo *bo = adev->uvd.ib_bo;
 	uint32_t *msg;
-	int r, i;
-
-	r = amdgpu_bo_create_reserved(adev, 1024, PAGE_SIZE,
-				      AMDGPU_GEM_DOMAIN_GTT,
-				      &bo, NULL, (void **)&msg);
-	if (r)
-		return r;
+	int i;
 
+	msg = amdgpu_bo_kptr(bo);
 	/* stitch together an UVD create msg */
 	msg[0] = cpu_to_le32(0x00000de4);
 	msg[1] = cpu_to_le32(0x00000000);
@@ -1199,6 +1228,7 @@ int amdgpu_uvd_get_create_msg(struct amdgpu_ring *ring, uint32_t handle,
 		msg[i] = cpu_to_le32(0x0);
 
 	return amdgpu_uvd_send_msg(ring, bo, true, fence);
+
 }
 
 int amdgpu_uvd_get_destroy_msg(struct amdgpu_ring *ring, uint32_t handle,
@@ -1209,12 +1239,15 @@ int amdgpu_uvd_get_destroy_msg(struct amdgpu_ring *ring, uint32_t handle,
 	uint32_t *msg;
 	int r, i;
 
-	r = amdgpu_bo_create_reserved(adev, 1024, PAGE_SIZE,
-				      AMDGPU_GEM_DOMAIN_GTT,
-				      &bo, NULL, (void **)&msg);
-	if (r)
-		return r;
+	if (direct) {
+		bo = adev->uvd.ib_bo;
+	} else {
+		r = amdgpu_uvd_create_msg_bo_helper(adev, 4096, &bo);
+		if (r)
+			return r;
+	}
 
+	msg = amdgpu_bo_kptr(bo);
 	/* stitch together an UVD destroy msg */
 	msg[0] = cpu_to_le32(0x00000de4);
 	msg[1] = cpu_to_le32(0x00000002);
@@ -1223,7 +1256,12 @@ int amdgpu_uvd_get_destroy_msg(struct amdgpu_ring *ring, uint32_t handle,
 	for (i = 4; i < 1024; ++i)
 		msg[i] = cpu_to_le32(0x0);
 
-	return amdgpu_uvd_send_msg(ring, bo, direct, fence);
+	r = amdgpu_uvd_send_msg(ring, bo, direct, fence);
+
+	if (!direct)
+		amdgpu_bo_free_kernel(&bo, NULL, (void **)&msg);
+
+	return r;
 }
 
 static void amdgpu_uvd_idle_work_handler(struct work_struct *work)

drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.h

@@ -68,6 +68,7 @@ struct amdgpu_uvd {
 	/* store image width to adjust nb memory state */
 	unsigned		decode_image_width;
 	uint32_t                keyselect;
+	struct amdgpu_bo	*ib_bo;
 };
 
 int amdgpu_uvd_sw_init(struct amdgpu_device *adev);

drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c

@@ -332,15 +332,9 @@ static int uvd_v6_0_enc_get_destroy_msg(struct amdgpu_ring *ring,
 static int uvd_v6_0_enc_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 {
 	struct dma_fence *fence = NULL;
-	struct amdgpu_bo *bo = NULL;
+	struct amdgpu_bo *bo = ring->adev->uvd.ib_bo;
 	long r;
 
-	r = amdgpu_bo_create_reserved(ring->adev, 128 * 1024, PAGE_SIZE,
-				      AMDGPU_GEM_DOMAIN_VRAM,
-				      &bo, NULL, NULL);
-	if (r)
-		return r;
-
 	r = uvd_v6_0_enc_get_create_msg(ring, 1, bo, NULL);
 	if (r)
 		goto error;
@@ -357,9 +351,6 @@ static int uvd_v6_0_enc_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 
 error:
 	dma_fence_put(fence);
-	amdgpu_bo_unpin(bo);
-	amdgpu_bo_unreserve(bo);
-	amdgpu_bo_unref(&bo);
 	return r;
 }
 

drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c

@@ -338,15 +338,9 @@ static int uvd_v7_0_enc_get_destroy_msg(struct amdgpu_ring *ring, uint32_t handl
 static int uvd_v7_0_enc_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 {
 	struct dma_fence *fence = NULL;
-	struct amdgpu_bo *bo = NULL;
+	struct amdgpu_bo *bo = ring->adev->uvd.ib_bo;
 	long r;
 
-	r = amdgpu_bo_create_reserved(ring->adev, 128 * 1024, PAGE_SIZE,
-				      AMDGPU_GEM_DOMAIN_VRAM,
-				      &bo, NULL, NULL);
-	if (r)
-		return r;
-
 	r = uvd_v7_0_enc_get_create_msg(ring, 1, bo, NULL);
 	if (r)
 		goto error;
@@ -363,9 +357,6 @@ static int uvd_v7_0_enc_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 
 error:
 	dma_fence_put(fence);
-	amdgpu_bo_unpin(bo);
-	amdgpu_bo_unreserve(bo);
-	amdgpu_bo_unref(&bo);
 	return r;
 }