drm/i915: Add some mock tests for dmabuf interop

Check that we can create both dmabuf and objects from dmabuf.

v2: Cleanups, correct include, fix unpin on dead path and prevent
explosion on dmabuf init failure

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170213171558.20942-25-chris@chris-wilson.co.uk

1 files changed, 41 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/selftests/mock_dmabuf.h b/drivers/gpu/drm/i915/selftests/mock_dmabuf.h
new file mode 100644
index 000000000000..ec80613159b9
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_dmabuf.h
@@ -0,0 +1,41 @@
+
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#ifndef __MOCK_DMABUF_H__
+#define __MOCK_DMABUF_H__
+
+#include <linux/dma-buf.h>
+
+struct mock_dmabuf {
+	int npages;
+	struct page *pages[];
+};
+
+static struct mock_dmabuf *to_mock(struct dma_buf *buf)
+{
+	return buf->priv;
+}
+
+#endif /* !__MOCK_DMABUF_H__ */