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-rw-r--r--linux-core/drm_os_linux.h55
1 files changed, 43 insertions, 12 deletions
diff --git a/linux-core/drm_os_linux.h b/linux-core/drm_os_linux.h
index cb304398..cf003137 100644
--- a/linux-core/drm_os_linux.h
+++ b/linux-core/drm_os_linux.h
@@ -44,16 +44,47 @@
#define DRM_MALLOC(x) kmalloc(x, GFP_KERNEL)
#define DRM_FREE(x) kfree(x)
-#define DRM_GETSAREA() \
-do { \
- struct list_head *list; \
- list_for_each( list, &dev->maplist->head ) { \
- drm_map_list_t *entry = (drm_map_list_t *)list; \
- if ( entry->map && \
- entry->map->type == _DRM_SHM && \
- (entry->map->flags & _DRM_CONTAINS_LOCK) ) { \
- dev_priv->sarea = entry->map; \
- break; \
- } \
- } \
+#define DRM_GETSAREA() \
+do { \
+ struct list_head *list; \
+ list_for_each( list, &dev->maplist->head ) { \
+ drm_map_list_t *entry = (drm_map_list_t *)list; \
+ if ( entry->map && \
+ entry->map->type == _DRM_SHM && \
+ (entry->map->flags & _DRM_CONTAINS_LOCK) ) { \
+ dev_priv->sarea = entry->map; \
+ break; \
+ } \
+ } \
} while (0)
+
+#define DRM_HZ HZ
+
+#define DRM_WAIT_ON( ret, queue, timeout, condition ) \
+do { \
+ DECLARE_WAITQUEUE(entry, current); \
+ unsigned long end = jiffies + (timeout); \
+ add_wait_queue(&(queue), &entry); \
+ \
+ for (;;) { \
+ current->state = TASK_INTERRUPTIBLE; \
+ if (condition) \
+ break; \
+ if((signed)(end - jiffies) <= 0) { \
+ ret = -EBUSY; \
+ break; \
+ } \
+ schedule_timeout(max(HZ/100,1)); \
+ if (signal_pending(current)) { \
+ ret = -EINTR; \
+ break; \
+ } \
+ } \
+ current->state = TASK_RUNNING; \
+ remove_wait_queue(&(queue), &entry); \
+} while (0)
+
+
+#define DRM_WAKEUP( queue ) wake_up_interruptible( queue )
+#define DRM_INIT_WAITQUEUE( queue ) init_waitqueue_head( queue )
+