diff options
Diffstat (limited to 'linux-core/drm_objects.h')
| -rw-r--r-- | linux-core/drm_objects.h | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/linux-core/drm_objects.h b/linux-core/drm_objects.h index f153b84a..0b937dc0 100644 --- a/linux-core/drm_objects.h +++ b/linux-core/drm_objects.h @@ -43,6 +43,7 @@ struct drm_bo_mem_reg; enum drm_object_type { drm_fence_type, drm_buffer_type, + drm_lock_type, /* * Add other user space object types here. */ @@ -414,6 +415,13 @@ struct drm_mem_type_manager { void *io_addr; }; +struct drm_bo_lock { + struct drm_user_object base; + wait_queue_head_t queue; + atomic_t write_lock_pending; + atomic_t readers; +}; + #define _DRM_FLAG_MEMTYPE_FIXED 0x00000001 /* Fixed (on-card) PCI memory */ #define _DRM_FLAG_MEMTYPE_MAPPABLE 0x00000002 /* Memory mappable */ #define _DRM_FLAG_MEMTYPE_CACHED 0x00000004 /* Cached binding */ @@ -423,8 +431,8 @@ struct drm_mem_type_manager { #define _DRM_FLAG_MEMTYPE_CSELECT 0x00000020 /* Select caching */ struct drm_buffer_manager { - struct mutex init_mutex; - struct mutex evict_mutex; + struct drm_bo_lock bm_lock; + struct mutex evict_mutex; int nice_mode; int initialized; struct drm_file *last_to_validate; @@ -603,6 +611,21 @@ extern void drm_regs_init(struct drm_reg_manager *manager, const void *), void (*reg_destroy)(struct drm_reg *)); +/* + * drm_bo_lock.c + * Simple replacement for the hardware lock on buffer manager init and clean. + */ + + +extern void drm_bo_init_lock(struct drm_bo_lock *lock); +extern void drm_bo_read_unlock(struct drm_bo_lock *lock); +extern int drm_bo_read_lock(struct drm_bo_lock *lock); +extern int drm_bo_write_lock(struct drm_bo_lock *lock, + struct drm_file *file_priv); + +extern int drm_bo_write_unlock(struct drm_bo_lock *lock, + struct drm_file *file_priv); + #ifdef CONFIG_DEBUG_MUTEXES #define DRM_ASSERT_LOCKED(_mutex) \ BUG_ON(!mutex_is_locked(_mutex) || \ |