[PATCH 06/18] drm/cirrus: 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/cirrus/cirrus_drv.h |  5 +--
 drivers/gpu/drm/cirrus/cirrus_ttm.c | 49 +++++------------------------
 2 files changed, 11 insertions(+), 43 deletions(-)

diff --git a/drivers/gpu/drm/cirrus/cirrus_drv.h b/drivers/gpu/drm/cirrus/cirrus_drv.h
index a29f87e98d9d..f62774cfb68e 100644
--- a/drivers/gpu/drm/cirrus/cirrus_drv.h
+++ b/drivers/gpu/drm/cirrus/cirrus_drv.h
@@ -21,6 +21,7 @@
 #include <drm/ttm/ttm_placement.h>
 #include <drm/ttm/ttm_memory.h>
 #include <drm/ttm/ttm_module.h>
+#include <drm/ttm/ttm_global.h>
 
 #include <drm/drm_gem.h>
 
@@ -136,9 +137,9 @@ struct cirrus_device {
 	int fb_mtrr;
 
 	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;
 	} ttm;
 	bool mm_inited;
 };
diff --git a/drivers/gpu/drm/cirrus/cirrus_ttm.c b/drivers/gpu/drm/cirrus/cirrus_ttm.c
index 2e2141f26c5b..f1c5e6b8e80a 100644
--- a/drivers/gpu/drm/cirrus/cirrus_ttm.c
+++ b/drivers/gpu/drm/cirrus/cirrus_ttm.c
@@ -36,60 +36,27 @@ cirrus_bdev(struct ttm_bo_device *bd)
 	return container_of(bd, struct cirrus_device, ttm.bdev);
 }
 
-static int
-cirrus_ttm_mem_global_init(struct drm_global_reference *ref)
-{
-	return ttm_mem_global_init(ref->object);
-}
-
-static void
-cirrus_ttm_mem_global_release(struct drm_global_reference *ref)
-{
-	ttm_mem_global_release(ref->object);
-}
-
 static int cirrus_ttm_global_init(struct cirrus_device *cirrus)
 {
-	struct drm_global_reference *global_ref;
-	int r;
-
-	global_ref = &cirrus->ttm.mem_global_ref;
-	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
-	global_ref->size = sizeof(struct ttm_mem_global);
-	global_ref->init = &cirrus_ttm_mem_global_init;
-	global_ref->release = &cirrus_ttm_mem_global_release;
-	r = drm_global_item_ref(global_ref);
+	int r = ttm_global_init(&cirrus->ttm.glob);
 	if (r != 0) {
-		DRM_ERROR("Failed setting up TTM memory accounting "
-			  "subsystem.\n");
+		DRM_ERROR("Failed setting up TTM subsystem.\n");
 		return r;
 	}
 
-	cirrus->ttm.bo_global_ref.mem_glob =
-		cirrus->ttm.mem_global_ref.object;
-	global_ref = &cirrus->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;
-	r = drm_global_item_ref(global_ref);
-	if (r != 0) {
-		DRM_ERROR("Failed setting up TTM BO subsystem.\n");
-		drm_global_item_unref(&cirrus->ttm.mem_global_ref);
-		return r;
-	}
+	cirrus->ttm.glob_initialized = true;
+
 	return 0;
 }
 
 static void
 cirrus_ttm_global_release(struct cirrus_device *cirrus)
 {
-	if (cirrus->ttm.mem_global_ref.release == NULL)
+	if (!cirrus->ttm.glob_initialized)
 		return;
 
-	drm_global_item_unref(&cirrus->ttm.bo_global_ref.ref);
-	drm_global_item_unref(&cirrus->ttm.mem_global_ref);
-	cirrus->ttm.mem_global_ref.release = NULL;
+	ttm_global_init(&cirrus->ttm.glob);
+	cirrus->ttm.glob_initialized = false;
 }
 
 
@@ -237,7 +204,7 @@ int cirrus_mm_init(struct cirrus_device *cirrus)
 		return ret;
 
 	ret = ttm_bo_device_init(&cirrus->ttm.bdev,
-				 cirrus->ttm.bo_global_ref.ref.object,
+				 cirrus->ttm.glob.bo_ref.object,
 				 &cirrus_bo_driver,
 				 dev->anon_inode->i_mapping,
 				 DRM_FILE_PAGE_OFFSET,
-- 
2.19.1