libdrm: add prime fd->handle and handle->fd interfaces
These are just basic ioctl wrappers around the prime ioctls,
along with the capability reporting.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/xf86drm.c b/xf86drm.c
index 6ea068f..2a74c80 100644
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -2542,3 +2542,34 @@
return strdup(name);
}
+
+int drmPrimeHandleToFD(int fd, uint32_t handle, uint32_t flags, int *prime_fd)
+{
+ struct drm_prime_handle args;
+ int ret;
+
+ args.handle = handle;
+ args.flags = flags;
+ ret = drmIoctl(fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
+ if (ret)
+ return ret;
+
+ *prime_fd = args.fd;
+ return 0;
+}
+
+int drmPrimeFDToHandle(int fd, int prime_fd, uint32_t *handle)
+{
+ struct drm_prime_handle args;
+ int ret;
+
+ args.fd = prime_fd;
+ args.flags = 0;
+ ret = drmIoctl(fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &args);
+ if (ret)
+ return ret;
+
+ *handle = args.handle;
+ return 0;
+}
+