struct drm_mm_node;
+
+/**
+ * struct ttm_placement
+ *
+ * @fpfn: first valid page frame number to put the object
+ * @lpfn: last valid page frame number to put the object
+ * @num_placement: number of prefered placements
+ * @placement: prefered placements
+ * @num_busy_placement: number of prefered placements when need to evict buffer
+ * @busy_placement: prefered placements when need to evict buffer
+ *
+ * Structure indicating the placement you request for an object.
+ */
+struct ttm_placement {
+ unsigned fpfn;
+ unsigned lpfn;
+ unsigned num_placement;
+ const uint32_t *placement;
+ unsigned num_busy_placement;
+ const uint32_t *busy_placement;
+};
+
+
/**
* struct ttm_mem_reg
*
* the object is destroyed.
* @event_queue: Queue for processes waiting on buffer object status change.
* @lock: spinlock protecting mostly synchronization members.
- * @proposed_placement: Proposed placement for the buffer. Changed only by the
- * creator prior to validation as opposed to bo->mem.proposed_flags which is
- * changed by the implementation prior to a buffer move if it wants to outsmart
- * the buffer creator / user. This latter happens, for example, at eviction.
* @mem: structure describing current placement.
* @persistant_swap_storage: Usually the swap storage is deleted for buffers
* pinned in physical memory. If this behaviour is not desired, this member
* Members protected by the bo::reserved lock.
*/
- uint32_t proposed_placement;
struct ttm_mem_reg mem;
struct file *persistant_swap_storage;
struct ttm_tt *ttm;
* Note: It might be necessary to block validations before the
* wait by reserving the buffer.
* Returns -EBUSY if no_wait is true and the buffer is busy.
- * Returns -ERESTART if interrupted by a signal.
+ * Returns -ERESTARTSYS if interrupted by a signal.
*/
extern int ttm_bo_wait(struct ttm_buffer_object *bo, bool lazy,
bool interruptible, bool no_wait);
/**
- * ttm_buffer_object_validate
+ * ttm_bo_validate
*
* @bo: The buffer object.
- * @proposed_placement: Proposed_placement for the buffer object.
+ * @placement: Proposed placement for the buffer object.
* @interruptible: Sleep interruptible if sleeping.
* @no_wait: Return immediately if the buffer is busy.
*
* Changes placement and caching policy of the buffer object
- * according to bo::proposed_flags.
+ * according proposed placement.
* Returns
- * -EINVAL on invalid proposed_flags.
+ * -EINVAL on invalid proposed placement.
* -ENOMEM on out-of-memory condition.
* -EBUSY if no_wait is true and buffer busy.
- * -ERESTART if interrupted by a signal.
+ * -ERESTARTSYS if interrupted by a signal.
*/
-extern int ttm_buffer_object_validate(struct ttm_buffer_object *bo,
- uint32_t proposed_placement,
- bool interruptible, bool no_wait);
+extern int ttm_bo_validate(struct ttm_buffer_object *bo,
+ struct ttm_placement *placement,
+ bool interruptible, bool no_wait);
+
/**
* ttm_bo_unref
*
* waiting for buffer idle. This lock is recursive.
* Returns
* -EBUSY if the buffer is busy and no_wait is true.
- * -ERESTART if interrupted by a signal.
+ * -ERESTARTSYS if interrupted by a signal.
*/
extern int
extern void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo);
/**
- * ttm_buffer_object_init
+ * ttm_bo_init
*
* @bdev: Pointer to a ttm_bo_device struct.
* @bo: Pointer to a ttm_buffer_object to be initialized.
* Returns
* -ENOMEM: Out of memory.
* -EINVAL: Invalid placement flags.
- * -ERESTART: Interrupted by signal while sleeping waiting for resources.
+ * -ERESTARTSYS: Interrupted by signal while sleeping waiting for resources.
*/
-extern int ttm_buffer_object_init(struct ttm_bo_device *bdev,
- struct ttm_buffer_object *bo,
- unsigned long size,
- enum ttm_bo_type type,
- uint32_t flags,
- uint32_t page_alignment,
- unsigned long buffer_start,
- bool interrubtible,
- struct file *persistant_swap_storage,
- size_t acc_size,
- void (*destroy) (struct ttm_buffer_object *));
+extern int ttm_bo_init(struct ttm_bo_device *bdev,
+ struct ttm_buffer_object *bo,
+ unsigned long size,
+ enum ttm_bo_type type,
+ struct ttm_placement *placement,
+ uint32_t page_alignment,
+ unsigned long buffer_start,
+ bool interrubtible,
+ struct file *persistant_swap_storage,
+ size_t acc_size,
+ void (*destroy) (struct ttm_buffer_object *));
/**
* ttm_bo_synccpu_object_init
*
* GEM user interface.
* @p_bo: On successful completion *p_bo points to the created object.
*
- * This function allocates a ttm_buffer_object, and then calls
- * ttm_buffer_object_init on that object.
- * The destroy function is set to kfree().
+ * This function allocates a ttm_buffer_object, and then calls ttm_bo_init
+ * on that object. The destroy function is set to kfree().
* Returns
* -ENOMEM: Out of memory.
* -EINVAL: Invalid placement flags.
- * -ERESTART: Interrupted by signal while waiting for resources.
+ * -ERESTARTSYS: Interrupted by signal while waiting for resources.
*/
-extern int ttm_buffer_object_create(struct ttm_bo_device *bdev,
- unsigned long size,
- enum ttm_bo_type type,
- uint32_t flags,
- uint32_t page_alignment,
- unsigned long buffer_start,
- bool interruptible,
- struct file *persistant_swap_storage,
- struct ttm_buffer_object **p_bo);
+extern int ttm_bo_create(struct ttm_bo_device *bdev,
+ unsigned long size,
+ enum ttm_bo_type type,
+ struct ttm_placement *placement,
+ uint32_t page_alignment,
+ unsigned long buffer_start,
+ bool interruptible,
+ struct file *persistant_swap_storage,
+ struct ttm_buffer_object **p_bo);
/**
* ttm_bo_check_placement
*
- * @bo: the buffer object.
- * @set_flags: placement flags to set.
- * @clr_flags: placement flags to clear.
+ * @bo: the buffer object.
+ * @placement: placements
*
* Performs minimal validity checking on an intended change of
* placement flags.
* Returns
* -EINVAL: Intended change is invalid or not allowed.
*/
-
extern int ttm_bo_check_placement(struct ttm_buffer_object *bo,
- uint32_t set_flags, uint32_t clr_flags);
+ struct ttm_placement *placement);
/**
* ttm_bo_init_mm
*
* @bdev: Pointer to a ttm_bo_device struct.
* @mem_type: The memory type.
- * @p_offset: offset for managed area in pages.
* @p_size: size managed area in pages.
*
* Initialize a manager for a given memory type.
*/
extern int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type,
- unsigned long p_offset, unsigned long p_size);
+ unsigned long p_size);
/**
* ttm_bo_clean_mm
*
*
* Returns:
* -EINVAL: Invalid or uninitialized memory type.
- * -ERESTART: The call was interrupted by a signal while waiting to
+ * -ERESTARTSYS: The call was interrupted by a signal while waiting to
* evict a buffer.
*/
* be called from the fops::read and fops::write method.
* Returns:
* See man (2) write, man(2) read. In particular,
- * the function may return -EINTR if
+ * the function may return -ERESTARTSYS if
* interrupted by a signal.
*/
projects / linux-flexiantxendom0-3.2.10.git / blobdiff