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path: root/drivers/gpu/drm/radeon/radeon_object.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_object.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_object.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 976c3b1b1b6..1c851521f45 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -515,3 +515,44 @@ int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
}
return 0;
}
+
+int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type, bool no_wait)
+{
+ int r;
+
+ r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0);
+ if (unlikely(r != 0))
+ return r;
+ spin_lock(&bo->tbo.bdev->fence_lock);
+ if (mem_type)
+ *mem_type = bo->tbo.mem.mem_type;
+ if (bo->tbo.sync_obj)
+ r = ttm_bo_wait(&bo->tbo, true, true, no_wait);
+ spin_unlock(&bo->tbo.bdev->fence_lock);
+ ttm_bo_unreserve(&bo->tbo);
+ return r;
+}
+
+
+/**
+ * radeon_bo_reserve - reserve bo
+ * @bo: bo structure
+ * @no_wait: don't sleep while trying to reserve (return -EBUSY)
+ *
+ * Returns:
+ * -EBUSY: buffer is busy and @no_wait is true
+ * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by
+ * a signal. Release all buffer reservations and return to user-space.
+ */
+int radeon_bo_reserve(struct radeon_bo *bo, bool no_wait)
+{
+ int r;
+
+ r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0);
+ if (unlikely(r != 0)) {
+ if (r != -ERESTARTSYS)
+ dev_err(bo->rdev->dev, "%p reserve failed\n", bo);
+ return r;
+ }
+ return 0;
+}