[Lima] [PATCH i-g-t 3/3] tests/lima: Add initial tests for lima

[Erico Nunes]

Some gem tests based on the panfrost and v3d ones.

Signed-off-by: Erico Nunes <nunes.erico at gmail.com>
---
 tests/lima_gem_new.c | 78 ++++++++++++++++++++++++++++++++++++++++++++
 tests/meson.build    |  1 +
 2 files changed, 79 insertions(+)
 create mode 100644 tests/lima_gem_new.c

diff --git a/tests/lima_gem_new.c b/tests/lima_gem_new.c
new file mode 100644
index 00000000..3b054317
--- /dev/null
+++ b/tests/lima_gem_new.c
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2023 Erico Nunes
+ */
+
+#include "igt.h"
+#include "igt_lima.h"
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include "lima_drm.h"
+
+igt_main
+{
+	int fd;
+
+	igt_fixture {
+		fd = drm_open_driver(DRIVER_LIMA);
+	}
+
+	igt_describe("Sanity check for creating a BO with size 4096.");
+	igt_subtest("gem-new-4096") {
+		struct lima_bo *bo = igt_lima_gem_new(fd, 4096);
+
+		igt_lima_free_bo(fd, bo);
+	}
+
+	igt_describe("Make sure a BO cannot be created with size zero.");
+	igt_subtest("gem-new-0") {
+		struct drm_lima_gem_create arg = {
+			.size = 0,
+		};
+
+		do_ioctl_err(fd, DRM_IOCTL_LIMA_GEM_CREATE, &arg, EINVAL);
+	}
+
+	igt_describe("Make sure that BOs can be allocated in different fd without "
+		     "carrying old contents from one another.");
+	igt_subtest("gem-new-zeroed") {
+		int fd2 = drm_open_driver(DRIVER_LIMA);
+		struct lima_bo *bo;
+		uint32_t *map;
+		/* A size different from any used in our other tests, to try
+		 * to convince it to land as the only one of its size in the
+		 * kernel BO cache
+		 */
+		size_t size = 3 * 4096;
+		size_t i;
+
+		/* Make a BO and free it on our main fd. */
+		bo = igt_lima_gem_new(fd, size);
+		map = igt_lima_mmap_bo(fd, bo->handle, size, PROT_READ | PROT_WRITE);
+		memset(map, 0xd0, size);
+		munmap(map, size);
+		igt_lima_free_bo(fd, bo);
+
+		/* Now, allocate a BO on the other fd and make sure it doesn't
+		 * have the old contents.
+		 */
+		bo = igt_lima_gem_new(fd2, size);
+		map = igt_lima_mmap_bo(fd2, bo->handle, size, PROT_READ | PROT_WRITE);
+		for (i = 0; i < size / 4; i++)
+			igt_assert_eq_u32(map[i], 0x0);
+		munmap(map, size);
+		igt_lima_free_bo(fd2, bo);
+
+		close(fd2);
+	}
+
+	igt_fixture
+		close(fd);
+}
diff --git a/tests/meson.build b/tests/meson.build
index f71be1db..980e77e9 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -62,6 +62,7 @@ test_progs = [
 	'kms_vblank',
 	'kms_vrr',
 	'kms_writeback',
+	'lima_gem_new',
 	'meta_test',
 	'panfrost_get_param',
 	'panfrost_gem_new',
-- 
2.40.1