drm/ttm: ttm_fault callback to allow driver to handle bo placement V6

[deliverable/linux.git] / include / drm / ttm / ttm_bo_driver.h

diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index 69f70e418c2ccb25c3f1ea315817810e7f1e5bdb..da39865d67d82d6cb6749fcaa84a1e80fc7d8ac4 100644 (file)
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -352,12 +352,21 @@ struct ttm_bo_driver {
                            struct ttm_mem_reg *new_mem);
        /* notify the driver we are taking a fault on this BO
         * and have reserved it */
-       void (*fault_reserve_notify)(struct ttm_buffer_object *bo);
+       int (*fault_reserve_notify)(struct ttm_buffer_object *bo);
 
        /**
         * notify the driver that we're about to swap out this bo
         */
        void (*swap_notify) (struct ttm_buffer_object *bo);
+
+       /**
+        * Driver callback on when mapping io memory (for bo_move_memcpy
+        * for instance). TTM will take care to call io_mem_free whenever
+        * the mapping is not use anymore. io_mem_reserve & io_mem_free
+        * are balanced.
+        */
+       int (*io_mem_reserve)(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem);
+       void (*io_mem_free)(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem);
 };
 
 /**
@@ -685,6 +694,11 @@ extern int ttm_bo_pci_offset(struct ttm_bo_device *bdev,
                             unsigned long *bus_offset,
                             unsigned long *bus_size);
 
+extern int ttm_mem_io_reserve(struct ttm_bo_device *bdev,
+                               struct ttm_mem_reg *mem);
+extern void ttm_mem_io_free(struct ttm_bo_device *bdev,
+                               struct ttm_mem_reg *mem);
+
 extern void ttm_bo_global_release(struct ttm_global_reference *ref);
 extern int ttm_bo_global_init(struct ttm_global_reference *ref);