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authorDave Airlie <airlied@redhat.com>2017-08-25 20:52:22 +0300
committerDave Airlie <airlied@redhat.com>2017-08-28 23:26:32 +0300
commit5e60a10eaebab93f823295cd7ec3848ba3b6e553 (patch)
treee6ab7ff3bbb3f4c314f7a3687e34aebfee2a80f2 /drivers/gpu/drm/drm_internal.h
parentafca4216b8b1085f3a53a27b732d95be257ecffb (diff)
downloadlinux-5e60a10eaebab93f823295cd7ec3848ba3b6e553.tar.xz
drm/syncobj: add sync obj wait interface. (v8)
This interface will allow sync object to be used to back Vulkan fences. This API is pretty much the vulkan fence waiting API, and I've ported the code from amdgpu. v2: accept relative timeout, pass remaining time back to userspace. v3: return to absolute timeouts. v4: absolute zero = poll, rewrite any/all code to have same operation for arrays return -EINVAL for 0 fences. v4.1: fixup fences allocation check, use u64_to_user_ptr v5: move to sec/nsec, and use timespec64 for calcs. v6: use -ETIME and drop the out status flag. (-ETIME is suggested by ickle, I can feel a shed painting) v7: talked to Daniel/Arnd, use ktime and ns everywhere. v8: be more careful in the timeout calculations use uint32_t for counter variables so we don't overflow graciously handle -ENOINT being returned from dma_fence_wait_timeout Signed-off-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_internal.h')
-rw-r--r--drivers/gpu/drm/drm_internal.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index 4e906b82a170..534e5ac43bf8 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -167,3 +167,5 @@ int drm_syncobj_handle_to_fd_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_private);
int drm_syncobj_fd_to_handle_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_private);
+int drm_syncobj_wait_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_private);