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path: root/drivers/gpu/drm/drm_syncobj.c
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Diffstat (limited to 'drivers/gpu/drm/drm_syncobj.c')
-rw-r--r--drivers/gpu/drm/drm_syncobj.c82
1 files changed, 64 insertions, 18 deletions
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 7943c215a03c..9b733c510cbf 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -264,8 +264,14 @@ void drm_syncobj_free(struct kref *kref)
}
EXPORT_SYMBOL(drm_syncobj_free);
-static int drm_syncobj_create(struct drm_file *file_private,
- u32 *handle, uint32_t flags)
+/**
+ * drm_syncobj_create - create a new syncobj
+ * @out_syncobj: returned syncobj
+ * @flags: DRM_SYNCOBJ_* flags
+ * @fence: if non-NULL, the syncobj will represent this fence
+ */
+int drm_syncobj_create(struct drm_syncobj **out_syncobj, uint32_t flags,
+ struct dma_fence *fence)
{
int ret;
struct drm_syncobj *syncobj;
@@ -286,6 +292,25 @@ static int drm_syncobj_create(struct drm_file *file_private,
}
}
+ if (fence)
+ drm_syncobj_replace_fence(syncobj, fence);
+
+ *out_syncobj = syncobj;
+ return 0;
+}
+EXPORT_SYMBOL(drm_syncobj_create);
+
+/**
+ * drm_syncobj_get_handle - get a handle from a syncobj
+ */
+int drm_syncobj_get_handle(struct drm_file *file_private,
+ struct drm_syncobj *syncobj, u32 *handle)
+{
+ int ret;
+
+ /* take a reference to put in the idr */
+ drm_syncobj_get(syncobj);
+
idr_preload(GFP_KERNEL);
spin_lock(&file_private->syncobj_table_lock);
ret = idr_alloc(&file_private->syncobj_idr, syncobj, 1, 0, GFP_NOWAIT);
@@ -301,6 +326,22 @@ static int drm_syncobj_create(struct drm_file *file_private,
*handle = ret;
return 0;
}
+EXPORT_SYMBOL(drm_syncobj_get_handle);
+
+static int drm_syncobj_create_as_handle(struct drm_file *file_private,
+ u32 *handle, uint32_t flags)
+{
+ int ret;
+ struct drm_syncobj *syncobj;
+
+ ret = drm_syncobj_create(&syncobj, flags, NULL);
+ if (ret)
+ return ret;
+
+ ret = drm_syncobj_get_handle(file_private, syncobj, handle);
+ drm_syncobj_put(syncobj);
+ return ret;
+}
static int drm_syncobj_destroy(struct drm_file *file_private,
u32 handle)
@@ -347,33 +388,38 @@ static int drm_syncobj_alloc_file(struct drm_syncobj *syncobj)
return 0;
}
-static int drm_syncobj_handle_to_fd(struct drm_file *file_private,
- u32 handle, int *p_fd)
+int drm_syncobj_get_fd(struct drm_syncobj *syncobj, int *p_fd)
{
- struct drm_syncobj *syncobj = drm_syncobj_find(file_private, handle);
int ret;
int fd;
- if (!syncobj)
- return -EINVAL;
-
fd = get_unused_fd_flags(O_CLOEXEC);
- if (fd < 0) {
- drm_syncobj_put(syncobj);
+ if (fd < 0)
return fd;
- }
if (!syncobj->file) {
ret = drm_syncobj_alloc_file(syncobj);
- if (ret)
- goto out_put_fd;
+ if (ret) {
+ put_unused_fd(fd);
+ return ret;
+ }
}
fd_install(fd, syncobj->file);
- drm_syncobj_put(syncobj);
*p_fd = fd;
return 0;
-out_put_fd:
- put_unused_fd(fd);
+}
+EXPORT_SYMBOL(drm_syncobj_get_fd);
+
+static int drm_syncobj_handle_to_fd(struct drm_file *file_private,
+ u32 handle, int *p_fd)
+{
+ struct drm_syncobj *syncobj = drm_syncobj_find(file_private, handle);
+ int ret;
+
+ if (!syncobj)
+ return -EINVAL;
+
+ ret = drm_syncobj_get_fd(syncobj, p_fd);
drm_syncobj_put(syncobj);
return ret;
}
@@ -524,8 +570,8 @@ drm_syncobj_create_ioctl(struct drm_device *dev, void *data,
if (args->flags & ~DRM_SYNCOBJ_CREATE_SIGNALED)
return -EINVAL;
- return drm_syncobj_create(file_private,
- &args->handle, args->flags);
+ return drm_syncobj_create_as_handle(file_private,
+ &args->handle, args->flags);
}
int