igt: Add basic exercise of vGEM

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 182 insertions, 0 deletions

diff --git a/tests/vgem_basic.c b/tests/vgem_basic.c
new file mode 100644
index 00000000..4e8408f2
--- /dev/null
+++ b/tests/vgem_basic.c
@@ -0,0 +1,182 @@
+/*
+ * 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.
+ */
+
+#include "igt.h"
+#include "igt_vgem.h"
+
+#include <sys/mman.h>
+
+IGT_TEST_DESCRIPTION("Basic sanity check of Virtual GEM module (vGEM).");
+
+static void test_create(int fd)
+{
+	struct vgem_bo bo;
+
+	bo.width = 0;
+	bo.height = 0;
+	bo.bpp = 0;
+	igt_assert_eq(__vgem_create(fd, &bo), -EINVAL);
+
+	bo.width = 1;
+	bo.height = 1;
+	bo.bpp = 1;
+	vgem_create(fd, &bo);
+	igt_assert_eq(bo.size, 4096);
+	gem_close(fd, bo.handle);
+
+	bo.width = 1024;
+	bo.height = 1024;
+	bo.bpp = 8;
+	vgem_create(fd, &bo);
+	igt_assert_eq(bo.size, 1<<20);
+	gem_close(fd, bo.handle);
+
+	bo.width = 1<<15;
+	bo.height = 1<<15;
+	bo.bpp = 16;
+	vgem_create(fd, &bo);
+	igt_assert_eq(bo.size, 1<<31);
+	gem_close(fd, bo.handle);
+}
+
+static void test_mmap(int fd)
+{
+	struct vgem_bo bo;
+	uint32_t *ptr;
+
+	bo.width = 1024;
+	bo.height = 1024;
+	bo.bpp = 32;
+	vgem_create(fd, &bo);
+
+	ptr = vgem_mmap(fd, &bo, PROT_WRITE);
+	gem_close(fd, bo.handle);
+
+	for (int page = 0; page < bo.size >> 12; page++)
+		ptr[page] = 0;
+
+	munmap(ptr, bo.size);
+}
+
+static bool has_prime_import(int fd)
+{
+	uint64_t value;
+
+	if (drmGetCap(fd, DRM_CAP_PRIME, &value))
+		return false;
+
+	return value & DRM_PRIME_CAP_IMPORT;
+}
+
+static void test_dmabuf_export(int fd)
+{
+	struct vgem_bo bo;
+	uint32_t handle;
+	int other;
+	int dmabuf;
+
+	other = drm_open_driver(DRIVER_ANY);
+	igt_require(has_prime_import(other));
+
+	bo.width = 1024;
+	bo.height = 1;
+	bo.bpp = 32;
+
+	vgem_create(fd, &bo);
+	dmabuf = prime_handle_to_fd(fd, bo.handle);
+	gem_close(fd, bo.handle);
+
+	handle = prime_fd_to_handle(other, dmabuf);
+	close(dmabuf);
+	gem_close(other, handle);
+	close(other);
+}
+
+static void test_dmabuf_mmap(int fd)
+{
+	struct vgem_bo bo;
+	uint32_t *ptr;
+	int export;
+
+	bo.width = 1024;
+	bo.height = 1024;
+	bo.bpp = 32;
+	vgem_create(fd, &bo);
+
+	export = prime_handle_to_fd_for_mmap(fd, bo.handle);
+	ptr = mmap(NULL, bo.size, PROT_WRITE, MAP_SHARED, export, 0);
+	close(export);
+	igt_assert(ptr != MAP_FAILED);
+
+	for (int page = 0; page < bo.size >> 12; page++)
+		ptr[page] = page;
+	munmap(ptr, bo.size);
+
+	ptr = vgem_mmap(fd, &bo, PROT_READ);
+	gem_close(fd, bo.handle);
+
+	for (int page = 0; page < bo.size >> 12; page++)
+		igt_assert_eq(ptr[page], page);
+	munmap(ptr, bo.size);
+}
+
+static bool has_prime_export(int fd)
+{
+	uint64_t value;
+
+	if (drmGetCap(fd, DRM_CAP_PRIME, &value))
+		return false;
+
+	return value & DRM_PRIME_CAP_EXPORT;
+}
+
+igt_main
+{
+	int fd = -1;
+
+	igt_fixture {
+		fd = drm_open_driver(DRIVER_VGEM);
+	}
+
+	igt_subtest_f("create")
+		test_create(fd);
+
+	igt_subtest_f("mmap")
+		test_mmap(fd);
+
+	igt_subtest_group {
+		igt_fixture {
+			igt_require(has_prime_export(fd));
+		}
+
+		igt_subtest_f("dmabuf-export")
+			test_dmabuf_export(fd);
+
+		igt_subtest_f("dmabuf-mmap")
+			test_dmabuf_mmap(fd);
+	}
+
+	igt_fixture {
+		close(fd);
+	}
+}