drm/ttm: drop list of memory managers from device. (v2)

The driver now controls these, the core just controls the system
memory one.

v2: init sysman explicitly and assign it as a driver manager
to simplify the lookup sequence.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-55-airlied@gmail.com

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index aec7e40..6f02c7f 100644 (file)
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1556,6 +1556,7 @@ int ttm_bo_device_release(struct ttm_bo_device *bdev)
 
        man = ttm_manager_type(bdev, TTM_PL_SYSTEM);
        ttm_mem_type_manager_disable(man);
+       ttm_set_driver_manager(bdev, TTM_PL_SYSTEM, NULL);
 
        mutex_lock(&ttm_global_mutex);
        list_del(&bdev->device_list);
@@ -1581,7 +1582,7 @@ EXPORT_SYMBOL(ttm_bo_device_release);
 
 static void ttm_bo_init_sysman(struct ttm_bo_device *bdev)
 {
-       struct ttm_mem_type_manager *man = ttm_manager_type(bdev, TTM_PL_SYSTEM);
+       struct ttm_mem_type_manager *man = &bdev->sysman;
 
        /*
         * Initialize the system memory buffer type.
@@ -1592,6 +1593,7 @@ static void ttm_bo_init_sysman(struct ttm_bo_device *bdev)
        man->default_caching = TTM_PL_FLAG_CACHED;
 
        ttm_mem_type_manager_init(man, 0);
+       ttm_set_driver_manager(bdev, TTM_PL_SYSTEM, man);
        ttm_mem_type_manager_set_used(man, true);
 }
 
@@ -1613,8 +1615,6 @@ int ttm_bo_device_init(struct ttm_bo_device *bdev,
 
        bdev->driver = driver;
 
-       memset(bdev->man_priv, 0, sizeof(bdev->man_priv));
-
        ttm_bo_init_sysman(bdev);
 
        bdev->vma_manager = vma_manager;

diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index e179754..2cb8721 100644 (file)
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -414,7 +414,7 @@ struct ttm_bo_device {
        /*
         * access via ttm_manager_type.
         */
-       struct ttm_mem_type_manager man_priv[TTM_NUM_MEM_TYPES];
+       struct ttm_mem_type_manager sysman;
        struct ttm_mem_type_manager *man_drv[TTM_NUM_MEM_TYPES];
        /*
         * Protected by internal locks.
@@ -446,9 +446,7 @@ struct ttm_bo_device {
 static inline struct ttm_mem_type_manager *ttm_manager_type(struct ttm_bo_device *bdev,
                                                            int mem_type)
 {
-       if (bdev->man_drv[mem_type])
-               return bdev->man_drv[mem_type];
-       return &bdev->man_priv[mem_type];
+       return bdev->man_drv[mem_type];
 }
 
 static inline void ttm_set_driver_manager(struct ttm_bo_device *bdev,