drm/amdgpu: clean up UVD instance handling v2

The whole handle, filp and entity handling is superfluous here.

We should have reviewed that more thoughtfully. It looks like somebody
just made the code instance aware without knowing the background.

v2: fix one more missed case in amdgpu_uvd_suspend

Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Chunming  Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -263,21 +263,20 @@ int amdgpu_uvd_sw_init(struct amdgpu_device *adev)
 			dev_err(adev->dev, "(%d) failed to allocate UVD bo\n", r);
 			return r;
 		}
+	}
 
-		ring = &adev->uvd.inst[j].ring;
-		rq = &ring->sched.sched_rq[DRM_SCHED_PRIORITY_NORMAL];
-		r = drm_sched_entity_init(&adev->uvd.inst[j].entity, &rq,
-					  1, NULL);
-		if (r != 0) {
-			DRM_ERROR("Failed setting up UVD(%d) run queue.\n", j);
-			return r;
-		}
-
-		for (i = 0; i < adev->uvd.max_handles; ++i) {
-			atomic_set(&adev->uvd.inst[j].handles[i], 0);
-			adev->uvd.inst[j].filp[i] = NULL;
-		}
+	ring = &adev->uvd.inst[0].ring;
+	rq = &ring->sched.sched_rq[DRM_SCHED_PRIORITY_NORMAL];
+	r = drm_sched_entity_init(&adev->uvd.entity, &rq, 1, NULL);
+	if (r) {
+		DRM_ERROR("Failed setting up UVD kernel entity.\n");
+		return r;
 	}
+	for (i = 0; i < adev->uvd.max_handles; ++i) {
+		atomic_set(&adev->uvd.handles[i], 0);
+		adev->uvd.filp[i] = NULL;
+	}
+
 	/* from uvd v5.0 HW addressing capacity increased to 64 bits */
 	if (!amdgpu_device_ip_block_version_cmp(adev, AMD_IP_BLOCK_TYPE_UVD, 5, 0))
 		adev->uvd.address_64_bit = true;
@@ -306,11 +305,12 @@ int amdgpu_uvd_sw_fini(struct amdgpu_device *adev)
 {
 	int i, j;
 
+	drm_sched_entity_destroy(&adev->uvd.inst->ring.sched,
+				 &adev->uvd.entity);
+
 	for (j = 0; j < adev->uvd.num_uvd_inst; ++j) {
 		kfree(adev->uvd.inst[j].saved_bo);
 
-		drm_sched_entity_destroy(&adev->uvd.inst[j].ring.sched, &adev->uvd.inst[j].entity);
-
 		amdgpu_bo_free_kernel(&adev->uvd.inst[j].vcpu_bo,
 				      &adev->uvd.inst[j].gpu_addr,
 				      (void **)&adev->uvd.inst[j].cpu_addr);
@@ -333,20 +333,20 @@ int amdgpu_uvd_suspend(struct amdgpu_device *adev)
 
 	cancel_delayed_work_sync(&adev->uvd.idle_work);
 
+	/* only valid for physical mode */
+	if (adev->asic_type < CHIP_POLARIS10) {
+		for (i = 0; i < adev->uvd.max_handles; ++i)
+			if (atomic_read(&adev->uvd.handles[i]))
+				break;
+
+		if (i == adev->uvd.max_handles)
+			return 0;
+	}
+
 	for (j = 0; j < adev->uvd.num_uvd_inst; ++j) {
 		if (adev->uvd.inst[j].vcpu_bo == NULL)
 			continue;
 
-		/* only valid for physical mode */
-		if (adev->asic_type < CHIP_POLARIS10) {
-			for (i = 0; i < adev->uvd.max_handles; ++i)
-				if (atomic_read(&adev->uvd.inst[j].handles[i]))
-					break;
-
-			if (i == adev->uvd.max_handles)
-				continue;
-		}
-
 		size = amdgpu_bo_size(adev->uvd.inst[j].vcpu_bo);
 		ptr = adev->uvd.inst[j].cpu_addr;
 
@@ -398,30 +398,27 @@ int amdgpu_uvd_resume(struct amdgpu_device *adev)
 
 void amdgpu_uvd_free_handles(struct amdgpu_device *adev, struct drm_file *filp)
 {
-	struct amdgpu_ring *ring;
-	int i, j, r;
-
-	for (j = 0; j < adev->uvd.num_uvd_inst; j++) {
-		ring = &adev->uvd.inst[j].ring;
+	struct amdgpu_ring *ring = &adev->uvd.inst[0].ring;
+	int i, r;
 
-		for (i = 0; i < adev->uvd.max_handles; ++i) {
-			uint32_t handle = atomic_read(&adev->uvd.inst[j].handles[i]);
-			if (handle != 0 && adev->uvd.inst[j].filp[i] == filp) {
-				struct dma_fence *fence;
-
-				r = amdgpu_uvd_get_destroy_msg(ring, handle,
-							       false, &fence);
-				if (r) {
-					DRM_ERROR("Error destroying UVD(%d) %d!\n", j, r);
-					continue;
-				}
+	for (i = 0; i < adev->uvd.max_handles; ++i) {
+		uint32_t handle = atomic_read(&adev->uvd.handles[i]);
 
-				dma_fence_wait(fence, false);
-				dma_fence_put(fence);
+		if (handle != 0 && adev->uvd.filp[i] == filp) {
+			struct dma_fence *fence;
 
-				adev->uvd.inst[j].filp[i] = NULL;
-				atomic_set(&adev->uvd.inst[j].handles[i], 0);
+			r = amdgpu_uvd_get_destroy_msg(ring, handle, false,
+						       &fence);
+			if (r) {
+				DRM_ERROR("Error destroying UVD %d!\n", r);
+				continue;
 			}
+
+			dma_fence_wait(fence, false);
+			dma_fence_put(fence);
+
+			adev->uvd.filp[i] = NULL;
+			atomic_set(&adev->uvd.handles[i], 0);
 		}
 	}
 }
@@ -692,20 +689,19 @@ static int amdgpu_uvd_cs_msg(struct amdgpu_uvd_cs_ctx *ctx,
 			     struct amdgpu_bo *bo, unsigned offset)
 {
 	struct amdgpu_device *adev = ctx->parser->adev;
-	uint32_t ip_instance = ctx->parser->ring->me;
 	int32_t *msg, msg_type, handle;
 	void *ptr;
 	long r;
 	int i;
 
 	if (offset & 0x3F) {
-		DRM_ERROR("UVD(%d) messages must be 64 byte aligned!\n", ip_instance);
+		DRM_ERROR("UVD messages must be 64 byte aligned!\n");
 		return -EINVAL;
 	}
 
 	r = amdgpu_bo_kmap(bo, &ptr);
 	if (r) {
-		DRM_ERROR("Failed mapping the UVD(%d) message (%ld)!\n", ip_instance, r);
+		DRM_ERROR("Failed mapping the UVD) message (%ld)!\n", r);
 		return r;
 	}
 
@@ -715,7 +711,7 @@ static int amdgpu_uvd_cs_msg(struct amdgpu_uvd_cs_ctx *ctx,
 	handle = msg[2];
 
 	if (handle == 0) {
-		DRM_ERROR("Invalid UVD(%d) handle!\n", ip_instance);
+		DRM_ERROR("Invalid UVD handle!\n");
 		return -EINVAL;
 	}
 
@@ -726,18 +722,19 @@ static int amdgpu_uvd_cs_msg(struct amdgpu_uvd_cs_ctx *ctx,
 
 		/* try to alloc a new handle */
 		for (i = 0; i < adev->uvd.max_handles; ++i) {
-			if (atomic_read(&adev->uvd.inst[ip_instance].handles[i]) == handle) {
-				DRM_ERROR("(%d)Handle 0x%x already in use!\n", ip_instance, handle);
+			if (atomic_read(&adev->uvd.handles[i]) == handle) {
+				DRM_ERROR(")Handle 0x%x already in use!\n",
+					  handle);
 				return -EINVAL;
 			}
 
-			if (!atomic_cmpxchg(&adev->uvd.inst[ip_instance].handles[i], 0, handle)) {
-				adev->uvd.inst[ip_instance].filp[i] = ctx->parser->filp;
+			if (!atomic_cmpxchg(&adev->uvd.handles[i], 0, handle)) {
+				adev->uvd.filp[i] = ctx->parser->filp;
 				return 0;
 			}
 		}
 
-		DRM_ERROR("No more free UVD(%d) handles!\n", ip_instance);
+		DRM_ERROR("No more free UVD handles!\n");
 		return -ENOSPC;
 
 	case 1:
@@ -749,27 +746,27 @@ static int amdgpu_uvd_cs_msg(struct amdgpu_uvd_cs_ctx *ctx,
 
 		/* validate the handle */
 		for (i = 0; i < adev->uvd.max_handles; ++i) {
-			if (atomic_read(&adev->uvd.inst[ip_instance].handles[i]) == handle) {
-				if (adev->uvd.inst[ip_instance].filp[i] != ctx->parser->filp) {
-					DRM_ERROR("UVD(%d) handle collision detected!\n", ip_instance);
+			if (atomic_read(&adev->uvd.handles[i]) == handle) {
+				if (adev->uvd.filp[i] != ctx->parser->filp) {
+					DRM_ERROR("UVD handle collision detected!\n");
 					return -EINVAL;
 				}
 				return 0;
 			}
 		}
 
-		DRM_ERROR("Invalid UVD(%d) handle 0x%x!\n", ip_instance, handle);
+		DRM_ERROR("Invalid UVD handle 0x%x!\n", handle);
 		return -ENOENT;
 
 	case 2:
 		/* it's a destroy msg, free the handle */
 		for (i = 0; i < adev->uvd.max_handles; ++i)
-			atomic_cmpxchg(&adev->uvd.inst[ip_instance].handles[i], handle, 0);
+			atomic_cmpxchg(&adev->uvd.handles[i], handle, 0);
 		amdgpu_bo_kunmap(bo);
 		return 0;
 
 	default:
-		DRM_ERROR("Illegal UVD(%d) message type (%d)!\n", ip_instance, msg_type);
+		DRM_ERROR("Illegal UVD message type (%d)!\n", msg_type);
 		return -EINVAL;
 	}
 	BUG();
@@ -1071,7 +1068,7 @@ static int amdgpu_uvd_send_msg(struct amdgpu_ring *ring, struct amdgpu_bo *bo,
 		if (r)
 			goto err_free;
 
-		r = amdgpu_job_submit(job, &adev->uvd.inst[ring->me].entity,
+		r = amdgpu_job_submit(job, &adev->uvd.entity,
 				      AMDGPU_FENCE_OWNER_UNDEFINED, &f);
 		if (r)
 			goto err_free;
@@ -1273,7 +1270,7 @@ uint32_t amdgpu_uvd_used_handles(struct amdgpu_device *adev)
 		 * necessarily linear. So we need to count
 		 * all non-zero handles.
 		 */
-		if (atomic_read(&adev->uvd.inst->handles[i]))
+		if (atomic_read(&adev->uvd.handles[i]))
 			used_handles++;
 	}
 

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

@@ -42,12 +42,9 @@ struct amdgpu_uvd_inst {
 	void			*cpu_addr;
 	uint64_t		gpu_addr;
 	void			*saved_bo;
-	atomic_t		handles[AMDGPU_MAX_UVD_HANDLES];
-	struct drm_file		*filp[AMDGPU_MAX_UVD_HANDLES];
 	struct amdgpu_ring	ring;
 	struct amdgpu_ring	ring_enc[AMDGPU_MAX_UVD_ENC_RINGS];
 	struct amdgpu_irq_src	irq;
-	struct drm_sched_entity entity;
 	uint32_t                srbm_soft_reset;
 };
 
@@ -56,10 +53,13 @@ struct amdgpu_uvd {
 	unsigned		fw_version;
 	unsigned		max_handles;
 	unsigned		num_enc_rings;
-	uint8_t		num_uvd_inst;
+	uint8_t			num_uvd_inst;
 	bool			address_64_bit;
 	bool			use_ctx_buf;
-	struct amdgpu_uvd_inst		inst[AMDGPU_MAX_UVD_INSTANCES];
+	struct amdgpu_uvd_inst	inst[AMDGPU_MAX_UVD_INSTANCES];
+	struct drm_file		*filp[AMDGPU_MAX_UVD_HANDLES];
+	atomic_t		handles[AMDGPU_MAX_UVD_HANDLES];
+	struct drm_sched_entity entity;
 	struct delayed_work	idle_work;
 };