[PATCH 5/5] drm/amdgpu: use metadata members of struct amdgpu_bo_user

[Nirmoy Das]

These memebers are only needed for BOs created by amdgpu_gem_object_create(),
so we can remove these from the base class.

CC:felix.kuehling at amd.com
Signed-off-by: Nirmoy Das <nirmoy.das at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c |  2 -
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 48 +++++++++++++++-------
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.h |  3 --
 3 files changed, 34 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
index c5343a5eecbe..f8c8cbd8ab59 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
@@ -494,8 +494,6 @@ int amdgpu_amdkfd_get_dmabuf_info(struct kgd_dev *kgd, int dma_buf_fd,
 		*dma_buf_kgd = (struct kgd_dev *)adev;
 	if (bo_size)
 		*bo_size = amdgpu_bo_size(bo);
-	if (metadata_size)
-		*metadata_size = bo->metadata_size;
 	if (metadata_buffer)
 		r = amdgpu_bo_get_metadata(bo, metadata_buffer, buffer_size,
 					   metadata_size, &metadata_flags);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 2e5cf46251af..81b2cff42481 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -77,6 +77,7 @@ static void amdgpu_bo_destroy(struct ttm_buffer_object *tbo)
 {
 	struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev);
 	struct amdgpu_bo *bo = ttm_to_amdgpu_bo(tbo);
+	struct amdgpu_bo_user *ubo;
 
 	if (bo->pin_count > 0)
 		amdgpu_bo_subtract_pin_size(bo);
@@ -94,7 +95,11 @@ static void amdgpu_bo_destroy(struct ttm_buffer_object *tbo)
 	}
 	amdgpu_bo_unref(&bo->parent);
 
-	kfree(bo->metadata);
+	if (bo->tbo.type == ttm_bo_type_device) {
+		ubo = container_of((bo), struct amdgpu_bo_user, bo);
+		kfree(ubo->metadata);
+	}
+
 	kfree(bo);
 }
 
@@ -1230,13 +1235,20 @@ void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags)
 int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
 			    uint32_t metadata_size, uint64_t flags)
 {
+	struct amdgpu_bo_user *ubo;
 	void *buffer;
 
+	if (bo->tbo.type != ttm_bo_type_device) {
+		DRM_ERROR("can not set metadata for a non-amdgpu_bo_user type BO\n");
+		return -EINVAL;
+	}
+
+	ubo = container_of((bo), struct amdgpu_bo_user, bo);
 	if (!metadata_size) {
-		if (bo->metadata_size) {
-			kfree(bo->metadata);
-			bo->metadata = NULL;
-			bo->metadata_size = 0;
+		if (ubo->metadata_size) {
+			kfree(ubo->metadata);
+			ubo->metadata = NULL;
+			ubo->metadata_size = 0;
 		}
 		return 0;
 	}
@@ -1248,10 +1260,10 @@ int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
 	if (buffer == NULL)
 		return -ENOMEM;
 
-	kfree(bo->metadata);
-	bo->metadata_flags = flags;
-	bo->metadata = buffer;
-	bo->metadata_size = metadata_size;
+	kfree(ubo->metadata);
+	ubo->metadata_flags = flags;
+	ubo->metadata = buffer;
+	ubo->metadata_size = metadata_size;
 
 	return 0;
 }
@@ -1275,21 +1287,29 @@ int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
 			   size_t buffer_size, uint32_t *metadata_size,
 			   uint64_t *flags)
 {
+	struct amdgpu_bo_user *ubo;
+
 	if (!buffer && !metadata_size)
 		return -EINVAL;
 
+	if (bo->tbo.type != ttm_bo_type_device) {
+		DRM_ERROR("can not get metadata for a non-amdgpu_bo_user type BO\n");
+		return -EINVAL;
+	}
+
+	ubo = container_of((bo), struct amdgpu_bo_user, bo);
 	if (buffer) {
-		if (buffer_size < bo->metadata_size)
+		if (buffer_size < ubo->metadata_size)
 			return -EINVAL;
 
-		if (bo->metadata_size)
-			memcpy(buffer, bo->metadata, bo->metadata_size);
+		if (ubo->metadata_size)
+			memcpy(buffer, ubo->metadata, ubo->metadata_size);
 	}
 
 	if (metadata_size)
-		*metadata_size = bo->metadata_size;
+		*metadata_size = ubo->metadata_size;
 	if (flags)
-		*flags = bo->metadata_flags;
+		*flags = ubo->metadata_flags;
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
index 6cc38b71f7ca..466081fa2083 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -91,9 +91,6 @@ struct amdgpu_bo {
 	struct ttm_bo_kmap_obj		kmap;
 	u64				flags;
 	unsigned			pin_count;
-	u64				metadata_flags;
-	void				*metadata;
-	u32				metadata_size;
 	unsigned			prime_shared_count;
 	/* per VM structure for page tables and with virtual addresses */
 	struct amdgpu_vm_bo_base	*vm_bo;
-- 
2.30.1