[PATCH 2/3] drm/amdgpu: Replace TTM initialization/release with ttm_global

[Thomas Zimmermann]

Unified initialization and relesae of the global TTM state is provided
by struct ttm_global and its interfaces.

Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 63 ++-----------------------
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h |  4 +-
 2 files changed, 7 insertions(+), 60 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 3a6802846698..70b0e8c77bb4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -65,33 +65,6 @@ static void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev);
  * Global memory.
  */
 
-/**
- * amdgpu_ttm_mem_global_init - Initialize and acquire reference to
- * memory object
- *
- * @ref: Object for initialization.
- *
- * This is called by drm_global_item_ref() when an object is being
- * initialized.
- */
-static int amdgpu_ttm_mem_global_init(struct drm_global_reference *ref)
-{
-	return ttm_mem_global_init(ref->object);
-}
-
-/**
- * amdgpu_ttm_mem_global_release - Drop reference to a memory object
- *
- * @ref: Object being removed
- *
- * This is called by drm_global_item_unref() when an object is being
- * released.
- */
-static void amdgpu_ttm_mem_global_release(struct drm_global_reference *ref)
-{
-	ttm_mem_global_release(ref->object);
-}
-
 /**
  * amdgpu_ttm_global_init - Initialize global TTM memory reference structures.
  *
@@ -102,35 +75,15 @@ static void amdgpu_ttm_mem_global_release(struct drm_global_reference *ref)
  */
 static int amdgpu_ttm_global_init(struct amdgpu_device *adev)
 {
-	struct drm_global_reference *global_ref;
 	int r;
 
 	/* ensure reference is false in case init fails */
 	adev->mman.mem_global_referenced = false;
 
-	global_ref = &adev->mman.mem_global_ref;
-	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
-	global_ref->size = sizeof(struct ttm_mem_global);
-	global_ref->init = &amdgpu_ttm_mem_global_init;
-	global_ref->release = &amdgpu_ttm_mem_global_release;
-	r = drm_global_item_ref(global_ref);
+	r = ttm_global_init(&adev->mman.glob);
 	if (r) {
-		DRM_ERROR("Failed setting up TTM memory accounting "
-			  "subsystem.\n");
-		goto error_mem;
-	}
-
-	adev->mman.bo_global_ref.mem_glob =
-		adev->mman.mem_global_ref.object;
-	global_ref = &adev->mman.bo_global_ref.ref;
-	global_ref->global_type = DRM_GLOBAL_TTM_BO;
-	global_ref->size = sizeof(struct ttm_bo_global);
-	global_ref->init = &ttm_bo_global_ref_init;
-	global_ref->release = &ttm_bo_global_ref_release;
-	r = drm_global_item_ref(global_ref);
-	if (r) {
-		DRM_ERROR("Failed setting up TTM BO subsystem.\n");
-		goto error_bo;
+		DRM_ERROR("Failed setting up TTM subsystem.\n");
+		return r;
 	}
 
 	mutex_init(&adev->mman.gtt_window_lock);
@@ -138,19 +91,13 @@ static int amdgpu_ttm_global_init(struct amdgpu_device *adev)
 	adev->mman.mem_global_referenced = true;
 
 	return 0;
-
-error_bo:
-	drm_global_item_unref(&adev->mman.mem_global_ref);
-error_mem:
-	return r;
 }
 
 static void amdgpu_ttm_global_fini(struct amdgpu_device *adev)
 {
 	if (adev->mman.mem_global_referenced) {
 		mutex_destroy(&adev->mman.gtt_window_lock);
-		drm_global_item_unref(&adev->mman.bo_global_ref.ref);
-		drm_global_item_unref(&adev->mman.mem_global_ref);
+		ttm_global_release(&adev->mman.glob);
 		adev->mman.mem_global_referenced = false;
 	}
 }
@@ -1765,7 +1712,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
 	}
 	/* No others user of address space so set it to 0 */
 	r = ttm_bo_device_init(&adev->mman.bdev,
-			       adev->mman.bo_global_ref.ref.object,
+			       ttm_global_get_bo_global(&adev->mman.glob),
 			       &amdgpu_bo_driver,
 			       adev->ddev->anon_inode->i_mapping,
 			       DRM_FILE_PAGE_OFFSET,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
index fe8f276e9811..c3a7fe3ead3a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
@@ -26,6 +26,7 @@
 
 #include "amdgpu.h"
 #include <drm/gpu_scheduler.h>
+#include <drm/ttm/ttm_global.h>
 
 #define AMDGPU_PL_GDS		(TTM_PL_PRIV + 0)
 #define AMDGPU_PL_GWS		(TTM_PL_PRIV + 1)
@@ -39,8 +40,7 @@
 #define AMDGPU_GTT_NUM_TRANSFER_WINDOWS	2
 
 struct amdgpu_mman {
-	struct ttm_bo_global_ref        bo_global_ref;
-	struct drm_global_reference	mem_global_ref;
+	struct ttm_global		glob;
 	struct ttm_bo_device		bdev;
 	bool				mem_global_referenced;
 	bool				initialized;
-- 
2.19.1