diff options
Diffstat (limited to 'include/drm/ttm/ttm_bo_api.h')
| -rw-r--r-- | include/drm/ttm/ttm_bo_api.h | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index e8028ade567f..c6cae733ddef 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -141,8 +141,6 @@ struct ttm_tt; * struct ttm_buffer_object * * @bdev: Pointer to the buffer object device structure. - * @buffer_start: The virtual user-space start address of ttm_bo_type_user - * buffers. * @type: The bo type. * @destroy: Destruction function. If NULL, kfree is used. * @num_pages: Actual number of pages. @@ -172,7 +170,6 @@ struct ttm_tt; * @seq_valid: The value of @val_seq is valid. This value is protected by * the bo_device::lru_lock. * @reserved: Deadlock-free lock used for synchronization state transitions. - * @sync_obj_arg: Opaque argument to synchronization object function. * @sync_obj: Pointer to a synchronization object. * @priv_flags: Flags describing buffer object internal state. * @vm_rb: Rb node for the vm rb tree. @@ -200,7 +197,6 @@ struct ttm_buffer_object { struct ttm_bo_global *glob; struct ttm_bo_device *bdev; - unsigned long buffer_start; enum ttm_bo_type type; void (*destroy) (struct ttm_buffer_object *); unsigned long num_pages; @@ -255,7 +251,6 @@ struct ttm_buffer_object { * checking NULL while reserved but not holding the mentioned lock. */ - void *sync_obj_arg; void *sync_obj; unsigned long priv_flags; @@ -429,8 +424,9 @@ extern void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, * @no_wait: Return immediately if buffer is busy. * * Synchronizes a buffer object for CPU RW access. This means - * blocking command submission that affects the buffer and - * waiting for buffer idle. This lock is recursive. + * command submission that affects the buffer will return -EBUSY + * until ttm_bo_synccpu_write_release is called. + * * Returns * -EBUSY if the buffer is busy and no_wait is true. * -ERESTARTSYS if interrupted by a signal. @@ -472,8 +468,6 @@ size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev, * @type: Requested type of buffer object. * @flags: Initial placement flags. * @page_alignment: Data alignment in pages. - * @buffer_start: Virtual address of user space data backing a - * user buffer object. * @interruptible: If needing to sleep to wait for GPU resources, * sleep interruptible. * @persistent_swap_storage: Usually the swap storage is deleted for buffers @@ -505,7 +499,6 @@ extern int ttm_bo_init(struct ttm_bo_device *bdev, enum ttm_bo_type type, struct ttm_placement *placement, uint32_t page_alignment, - unsigned long buffer_start, bool interrubtible, struct file *persistent_swap_storage, size_t acc_size, @@ -521,8 +514,6 @@ extern int ttm_bo_init(struct ttm_bo_device *bdev, * @type: Requested type of buffer object. * @flags: Initial placement flags. * @page_alignment: Data alignment in pages. - * @buffer_start: Virtual address of user space data backing a - * user buffer object. * @interruptible: If needing to sleep while waiting for GPU resources, * sleep interruptible. * @persistent_swap_storage: Usually the swap storage is deleted for buffers @@ -545,7 +536,6 @@ extern int ttm_bo_create(struct ttm_bo_device *bdev, enum ttm_bo_type type, struct ttm_placement *placement, uint32_t page_alignment, - unsigned long buffer_start, bool interruptible, struct file *persistent_swap_storage, struct ttm_buffer_object **p_bo); @@ -736,4 +726,18 @@ extern ssize_t ttm_bo_io(struct ttm_bo_device *bdev, struct file *filp, extern void ttm_bo_swapout_all(struct ttm_bo_device *bdev); +/** + * ttm_bo_is_reserved - return an indication if a ttm buffer object is reserved + * + * @bo: The buffer object to check. + * + * This function returns an indication if a bo is reserved or not, and should + * only be used to print an error when it is not from incorrect api usage, since + * there's no guarantee that it is the caller that is holding the reservation. + */ +static inline bool ttm_bo_is_reserved(struct ttm_buffer_object *bo) +{ + return atomic_read(&bo->reserved); +} + #endif |