[PATCH 09/18] drm/nouveau: Replace TTM initialization/release with ttm_global

[Thomas Zimmermann]

Unified initialization and release 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/nouveau/nouveau_drv.h |  5 +--
 drivers/gpu/drm/nouveau/nouveau_ttm.c | 48 ++++-----------------------
 2 files changed, 9 insertions(+), 44 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 0b2191fa96f7..0d5a78f4ad75 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -54,6 +54,7 @@
 #include <drm/ttm/ttm_memory.h>
 #include <drm/ttm/ttm_module.h>
 #include <drm/ttm/ttm_page_alloc.h>
+#include <drm/ttm/ttm_global.h>
 
 #include "uapi/drm/nouveau_drm.h"
 
@@ -146,9 +147,9 @@ struct nouveau_drm {
 
 	/* TTM interface support */
 	struct {
-		struct drm_global_reference mem_global_ref;
-		struct ttm_bo_global_ref bo_global_ref;
+		struct ttm_global glob;
 		struct ttm_bo_device bdev;
+		bool glob_initialized;
 		atomic_t validate_sequence;
 		int (*move)(struct nouveau_channel *,
 			    struct ttm_buffer_object *,
diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index a293383c8654..f2bd707ad7b1 100644
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -174,51 +174,16 @@ nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
 	return ttm_bo_mmap(filp, vma, &drm->ttm.bdev);
 }
 
-static int
-nouveau_ttm_mem_global_init(struct drm_global_reference *ref)
-{
-	return ttm_mem_global_init(ref->object);
-}
-
-static void
-nouveau_ttm_mem_global_release(struct drm_global_reference *ref)
-{
-	ttm_mem_global_release(ref->object);
-}
-
 int
 nouveau_ttm_global_init(struct nouveau_drm *drm)
 {
-	struct drm_global_reference *global_ref;
-	int ret;
-
-	global_ref = &drm->ttm.mem_global_ref;
-	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
-	global_ref->size = sizeof(struct ttm_mem_global);
-	global_ref->init = &nouveau_ttm_mem_global_init;
-	global_ref->release = &nouveau_ttm_mem_global_release;
-
-	ret = drm_global_item_ref(global_ref);
+	int ret = ttm_global_init(&drm->ttm.glob);
 	if (unlikely(ret != 0)) {
 		DRM_ERROR("Failed setting up TTM memory accounting\n");
-		drm->ttm.mem_global_ref.release = NULL;
 		return ret;
 	}
 
-	drm->ttm.bo_global_ref.mem_glob = global_ref->object;
-	global_ref = &drm->ttm.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;
-
-	ret = drm_global_item_ref(global_ref);
-	if (unlikely(ret != 0)) {
-		DRM_ERROR("Failed setting up TTM BO subsystem\n");
-		drm_global_item_unref(&drm->ttm.mem_global_ref);
-		drm->ttm.mem_global_ref.release = NULL;
-		return ret;
-	}
+	drm->ttm.glob_initialized = true;
 
 	return 0;
 }
@@ -226,12 +191,11 @@ nouveau_ttm_global_init(struct nouveau_drm *drm)
 void
 nouveau_ttm_global_release(struct nouveau_drm *drm)
 {
-	if (drm->ttm.mem_global_ref.release == NULL)
+	if (!drm->ttm.glob_initialized)
 		return;
 
-	drm_global_item_unref(&drm->ttm.bo_global_ref.ref);
-	drm_global_item_unref(&drm->ttm.mem_global_ref);
-	drm->ttm.mem_global_ref.release = NULL;
+	ttm_global_release(&drm->ttm.glob);
+	drm->ttm.glob_initialized = false;
 }
 
 static int
@@ -301,7 +265,7 @@ nouveau_ttm_init(struct nouveau_drm *drm)
 		return ret;
 
 	ret = ttm_bo_device_init(&drm->ttm.bdev,
-				  drm->ttm.bo_global_ref.ref.object,
+				  drm->ttm.glob.bo_ref.object,
 				  &nouveau_bo_driver,
 				  dev->anon_inode->i_mapping,
 				  DRM_FILE_PAGE_OFFSET,
-- 
2.19.1