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authorJason Ekstrand <jason@jlekstrand.net>2017-08-28 14:10:27 -0700
committerDave Airlie <airlied@redhat.com>2017-08-29 10:16:19 +1000
commitaa4035d2c7683d2f2fb0ffe8087abd9eabf6d54a (patch)
tree77167db05d67212faa9d9ac03b368a83badfc752 /drivers/gpu/drm/drm_syncobj.c
parent3e6fb72d6cef6a46f8531a01ed290785952fe25b (diff)
drm/syncobj: Add a reset ioctl (v3)
This just resets the dma_fence to NULL so it looks like it's never been signaled. This will be useful once we add the new wait API for allowing wait on "submit and signal" behavior. v2: - Take an array of sync objects (Dave Airlie) v3: - Throw -EINVAL if pad != 0 Signed-off-by: Jason Ekstrand <jason@jlekstrand.net> Reviewed-by: Christian König <christian.koenig@amd.com> (v1) Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_syncobj.c')
-rw-r--r--drivers/gpu/drm/drm_syncobj.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 15e74ca61760..40d2ad293661 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -885,3 +885,36 @@ drm_syncobj_wait_ioctl(struct drm_device *dev, void *data,
return ret;
}
+
+int
+drm_syncobj_reset_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_private)
+{
+ struct drm_syncobj_array *args = data;
+ struct drm_syncobj **syncobjs;
+ uint32_t i;
+ int ret;
+
+ if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ))
+ return -ENODEV;
+
+ if (args->pad != 0)
+ return -EINVAL;
+
+ if (args->count_handles == 0)
+ return -EINVAL;
+
+ ret = drm_syncobj_array_find(file_private,
+ u64_to_user_ptr(args->handles),
+ args->count_handles,
+ &syncobjs);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < args->count_handles; i++)
+ drm_syncobj_replace_fence(syncobjs[i], NULL);
+
+ drm_syncobj_array_free(syncobjs, args->count_handles);
+
+ return 0;
+}