[igt-dev] [PATCH i-g-t v9 4/4] tests/xe/xe_sysfs_tile: adds new test to verify per tile vram addr_range

[Himal Prasad Ghimiray]

For each tile the test reads the sysfs entry physical_vram_size_bytes
and compares the value with vram size exposed from query ioctl.

v2:
- Change sysfs entry name. (Tejas)
- Change test name to xe_sysfs_tile_prop. (Rahul)

v3:
- Rectify assertion condition.

v4:
- use igt_assert_lt_u64 instead of igt_assert_lt
for comparing u64.

v5:
- update xe_for_each_tile call.

v6:
- Rename testcase to xe_sysfs_tile
- Pass tilefd and use it in igt_sysfs_scanf. (Ashutosh)

v7:
- Use for_each_sysfs_tile_dirfd instead of xe_for_each_tile.

Cc: Aravind Iddamsetty <aravind.iddamsetty at intel.com>
Cc: Upadhyay <tejas.upadhyay at intel.com>
Cc: Janga Rahul Kumar <janga.rahul.kumar at intel.com>
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray at intel.com>
---
 tests/meson.build        |  1 +
 tests/xe/xe_sysfs_tile.c | 55 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 tests/xe/xe_sysfs_tile.c

diff --git a/tests/meson.build b/tests/meson.build
index ee066b849..0567449bf 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -268,6 +268,7 @@ xe_progs = [
 	'xe_pm',
 	'xe_prime_self_import',
 	'xe_query',
+	'xe_sysfs_tile',
 	'xe_vm',
 	'xe_waitfence',
 	'xe_spin_batch',
diff --git a/tests/xe/xe_sysfs_tile.c b/tests/xe/xe_sysfs_tile.c
new file mode 100644
index 000000000..c4c3f5446
--- /dev/null
+++ b/tests/xe/xe_sysfs_tile.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+/**
+ * TEST: Verify physical_vram_size_bytes of each tiles
+ * SUBTEST: physical_vram_size_bytes
+ * Description:
+ *             Read sysfs entry for physical_vram_size_bytes and compare with
+ *             vram size. physical_vram_size_bytes should be more than vram size.
+ */
+
+#include <string.h>
+#include <sys/time.h>
+
+#include "igt.h"
+#include "igt_sysfs.h"
+
+#include "xe_drm.h"
+#include "xe/xe_ioctl.h"
+#include "xe/xe_query.h"
+
+static void test_vram_physical_vram_size_bytes(int tile_fd, int tile_num, u64 vram_size)
+{
+	u64 physical_vram_size_bytes;
+
+	igt_assert(igt_sysfs_scanf(tile_fd, "physical_vram_size_bytes",
+				   "%lx", &physical_vram_size_bytes) > 0);
+	igt_assert_lt_u64(vram_size, physical_vram_size_bytes);
+}
+
+igt_main
+{
+	int fd, tilefd, tile;
+	u64 vram_size;
+
+	igt_fixture {
+		fd = drm_open_driver(DRIVER_XE);
+		xe_device_get(fd);
+	}
+
+	igt_subtest("physical_vram_size_bytes") {
+		igt_require(xe_has_vram(fd));
+		for_each_sysfs_tile_dirfd(fd, tilefd, tile) {
+			vram_size = xe_vram_size(fd, tile);
+			test_vram_physical_vram_size_bytes(tilefd, tile, vram_size);
+		}
+	}
+
+	igt_fixture {
+		xe_device_put(fd);
+		close(fd);
+	}
+}
-- 
2.25.1