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

[net-next-2.6.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 e3f1b4a4b601aa5cb909030d733dad50f5c074cc..da39865d67d82d6cb6749fcaa84a1e80fc7d8ac4 100644 (file)
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -115,7 +115,6 @@ struct ttm_backend {
        struct ttm_backend_func *func;
 };
 
-#define TTM_PAGE_FLAG_VMALLOC         (1 << 0)
 #define TTM_PAGE_FLAG_USER            (1 << 1)
 #define TTM_PAGE_FLAG_USER_DIRTY      (1 << 2)
 #define TTM_PAGE_FLAG_WRITE           (1 << 3)
@@ -312,7 +311,8 @@ struct ttm_bo_driver {
         */
        int (*move) (struct ttm_buffer_object *bo,
                     bool evict, bool interruptible,
-                    bool no_wait, struct ttm_mem_reg *new_mem);
+                    bool no_wait_reserve, bool no_wait_gpu,
+                    struct ttm_mem_reg *new_mem);
 
        /**
         * struct ttm_bo_driver_member verify_access
@@ -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);
 };
 
 /**
@@ -634,7 +643,8 @@ extern bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev,
  * @proposed_placement: Proposed new placement for the buffer object.
  * @mem: A struct ttm_mem_reg.
  * @interruptible: Sleep interruptible when sliping.
- * @no_wait: Don't sleep waiting for space to become available.
+ * @no_wait_reserve: Return immediately if other buffers are busy.
+ * @no_wait_gpu: Return immediately if the GPU is busy.
  *
  * Allocate memory space for the buffer object pointed to by @bo, using
  * the placement flags in @mem, potentially evicting other idle buffer objects.
@@ -648,7 +658,8 @@ extern bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev,
 extern int ttm_bo_mem_space(struct ttm_buffer_object *bo,
                                struct ttm_placement *placement,
                                struct ttm_mem_reg *mem,
-                               bool interruptible, bool no_wait);
+                               bool interruptible,
+                               bool no_wait_reserve, bool no_wait_gpu);
 /**
  * ttm_bo_wait_for_cpu
  *
@@ -683,6 +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);
 
@@ -827,7 +843,8 @@ extern void ttm_bo_unblock_reservation(struct ttm_buffer_object *bo);
  *
  * @bo: A pointer to a struct ttm_buffer_object.
  * @evict: 1: This is an eviction. Don't try to pipeline.
- * @no_wait: Never sleep, but rather return with -EBUSY.
+ * @no_wait_reserve: Return immediately if other buffers are busy.
+ * @no_wait_gpu: Return immediately if the GPU is busy.
  * @new_mem: struct ttm_mem_reg indicating where to move.
  *
  * Optimized move function for a buffer object with both old and
@@ -841,15 +858,16 @@ extern void ttm_bo_unblock_reservation(struct ttm_buffer_object *bo);
  */
 
 extern int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
-                          bool evict, bool no_wait,
-                          struct ttm_mem_reg *new_mem);
+                          bool evict, bool no_wait_reserve,
+                          bool no_wait_gpu, struct ttm_mem_reg *new_mem);
 
 /**
  * ttm_bo_move_memcpy
  *
  * @bo: A pointer to a struct ttm_buffer_object.
  * @evict: 1: This is an eviction. Don't try to pipeline.
- * @no_wait: Never sleep, but rather return with -EBUSY.
+ * @no_wait_reserve: Return immediately if other buffers are busy.
+ * @no_wait_gpu: Return immediately if the GPU is busy.
  * @new_mem: struct ttm_mem_reg indicating where to move.
  *
  * Fallback move function for a mappable buffer object in mappable memory.
@@ -863,8 +881,8 @@ extern int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
  */
 
 extern int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
-                             bool evict,
-                             bool no_wait, struct ttm_mem_reg *new_mem);
+                             bool evict, bool no_wait_reserve,
+                             bool no_wait_gpu, struct ttm_mem_reg *new_mem);
 
 /**
  * ttm_bo_free_old_node
@@ -883,7 +901,8 @@ extern void ttm_bo_free_old_node(struct ttm_buffer_object *bo);
  * @sync_obj_arg: An argument to pass to the sync object idle / wait
  * functions.
  * @evict: This is an evict move. Don't return until the buffer is idle.
- * @no_wait: Never sleep, but rather return with -EBUSY.
+ * @no_wait_reserve: Return immediately if other buffers are busy.
+ * @no_wait_gpu: Return immediately if the GPU is busy.
  * @new_mem: struct ttm_mem_reg indicating where to move.
  *
  * Accelerated move function to be called when an accelerated move
@@ -897,7 +916,8 @@ extern void ttm_bo_free_old_node(struct ttm_buffer_object *bo);
 extern int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
                                     void *sync_obj,
                                     void *sync_obj_arg,
-                                    bool evict, bool no_wait,
+                                    bool evict, bool no_wait_reserve,
+                                    bool no_wait_gpu,
                                     struct ttm_mem_reg *new_mem);
 /**
  * ttm_io_prot