drm/amdgpu/ttm: move vram/gtt mgr allocations to mman.

Christian suggested this and it makes sense.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200806233459.4057784-2-airlied@gmail.com

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

@@ -24,13 +24,6 @@
 
 #include "amdgpu.h"
 
-struct amdgpu_gtt_mgr {
-	struct ttm_resource_manager manager;
-	struct drm_mm mm;
-	spinlock_t lock;
-	atomic64_t available;
-};
-
 static inline struct amdgpu_gtt_mgr *to_gtt_mgr(struct ttm_resource_manager *man)
 {
 	return container_of(man, struct amdgpu_gtt_mgr, manager);
@@ -93,16 +86,11 @@ static const struct ttm_resource_manager_func amdgpu_gtt_mgr_func;
  */
 int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size)
 {
-	struct ttm_resource_manager *man;
-	struct amdgpu_gtt_mgr *mgr;
+	struct amdgpu_gtt_mgr *mgr = &adev->mman.gtt_mgr;
+	struct ttm_resource_manager *man = &mgr->manager;
 	uint64_t start, size;
 	int ret;
 
-	mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
-	if (!mgr)
-		return -ENOMEM;
-
-	man = &mgr->manager;
 	man->use_tt = true;
 	man->func = &amdgpu_gtt_mgr_func;
 	man->available_caching = TTM_PL_MASK_CACHING;
@@ -142,8 +130,8 @@ int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size)
  */
 void amdgpu_gtt_mgr_fini(struct amdgpu_device *adev)
 {
-	struct ttm_resource_manager *man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
-	struct amdgpu_gtt_mgr *mgr = to_gtt_mgr(man);
+	struct amdgpu_gtt_mgr *mgr = &adev->mman.gtt_mgr;
+	struct ttm_resource_manager *man = &mgr->manager;
 	int ret;
 
 	ttm_resource_manager_set_used(man, false);
@@ -161,7 +149,6 @@ void amdgpu_gtt_mgr_fini(struct amdgpu_device *adev)
 
 	ttm_resource_manager_cleanup(man);
 	ttm_set_driver_manager(&adev->mman.bdev, TTM_PL_TT, NULL);
-	kfree(mgr);
 }
 
 /**

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

@@ -41,6 +41,22 @@
 
 #define AMDGPU_POISON	0xd0bed0be
 
+struct amdgpu_vram_mgr {
+	struct ttm_resource_manager manager;
+	struct drm_mm mm;
+	spinlock_t lock;
+	atomic64_t usage;
+	atomic64_t vis_usage;
+	struct amdgpu_device *adev;
+};
+
+struct amdgpu_gtt_mgr {
+	struct ttm_resource_manager manager;
+	struct drm_mm mm;
+	spinlock_t lock;
+	atomic64_t available;
+};
+
 struct amdgpu_mman {
 	struct ttm_bo_device		bdev;
 	bool				mem_global_referenced;
@@ -59,6 +75,9 @@ struct amdgpu_mman {
 	struct mutex				gtt_window_lock;
 	/* Scheduler entity for buffer moves */
 	struct drm_sched_entity			entity;
+
+	struct amdgpu_vram_mgr vram_mgr;
+	struct amdgpu_gtt_mgr gtt_mgr;
 };
 
 struct amdgpu_copy_mem {

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

@@ -28,15 +28,6 @@
 #include "amdgpu_atomfirmware.h"
 #include "atom.h"
 
-struct amdgpu_vram_mgr {
-	struct ttm_resource_manager manager;
-	struct drm_mm mm;
-	spinlock_t lock;
-	atomic64_t usage;
-	atomic64_t vis_usage;
-	struct amdgpu_device *adev;
-};
-
 static inline struct amdgpu_vram_mgr *to_vram_mgr(struct ttm_resource_manager *man)
 {
 	return container_of(man, struct amdgpu_vram_mgr, manager);
@@ -177,16 +168,10 @@ static const struct ttm_resource_manager_func amdgpu_vram_mgr_func;
  */
 int amdgpu_vram_mgr_init(struct amdgpu_device *adev)
 {
-	struct ttm_resource_manager *man;
-	struct amdgpu_vram_mgr *mgr;
+	struct amdgpu_vram_mgr *mgr = &adev->mman.vram_mgr;
+	struct ttm_resource_manager *man = &mgr->manager;
 	int ret;
 
-	mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
-	if (!mgr)
-		return -ENOMEM;
-
-	man = &mgr->manager;
-
 	man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC;
 	man->default_caching = TTM_PL_FLAG_WC;
 
@@ -219,8 +204,8 @@ int amdgpu_vram_mgr_init(struct amdgpu_device *adev)
  */
 void amdgpu_vram_mgr_fini(struct amdgpu_device *adev)
 {
-	struct ttm_resource_manager *man = ttm_manager_type(&adev->mman.bdev, TTM_PL_VRAM);
-	struct amdgpu_vram_mgr *mgr = to_vram_mgr(man);
+	struct amdgpu_vram_mgr *mgr = &adev->mman.vram_mgr;
+	struct ttm_resource_manager *man = &mgr->manager;
 	int ret;
 
 	ttm_resource_manager_set_used(man, false);
@@ -237,7 +222,6 @@ void amdgpu_vram_mgr_fini(struct amdgpu_device *adev)
 
 	ttm_resource_manager_cleanup(man);
 	ttm_set_driver_manager(&adev->mman.bdev, TTM_PL_VRAM, NULL);
-	kfree(mgr);
 }
 
 /**