[igt-dev] [PATCH v3 4/4] tests/xe/xe_sysfs_tile_prop: 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)

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_prop.c | 63 +++++++++++++++++++++++++++++++++++
 2 files changed, 64 insertions(+)
 create mode 100644 tests/xe/xe_sysfs_tile_prop.c

diff --git a/tests/meson.build b/tests/meson.build
index 61dcc076..569f1d22 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -267,6 +267,7 @@ xe_progs = [
 	'xe_pm',
 	'xe_prime_self_import',
 	'xe_query',
+	'xe_sysfs_tile_prop',
 	'xe_vm',
 	'xe_waitfence',
 ]
diff --git a/tests/xe/xe_sysfs_tile_prop.c b/tests/xe/xe_sysfs_tile_prop.c
new file mode 100644
index 00000000..18dfeca5
--- /dev/null
+++ b/tests/xe/xe_sysfs_tile_prop.c
@@ -0,0 +1,63 @@
+// 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 sysfs, int tile_num, u64 vram_size)
+{
+	u64 physical_vram_size_bytes;
+	char path[40];
+
+	igt_assert(snprintf(path, sizeof(path), "device/tile%d/physical_vram_size_bytes",
+			    tile_num) < sizeof(path));
+	igt_assert(igt_sysfs_scanf(sysfs, path, "%lx", &physical_vram_size_bytes) < 0);
+	igt_assert_lt(vram_size, physical_vram_size_bytes);
+}
+
+igt_main
+{
+	int fd;
+	int tile, total_tiles;
+	static int sysfs = -1;
+	u64 vram_size;
+
+	igt_fixture {
+		fd = drm_open_driver(DRIVER_XE);
+		xe_device_get(fd);
+
+		sysfs = igt_sysfs_open(fd);
+		igt_assert(sysfs != -1);
+	}
+
+	igt_subtest("physical_vram_size_bytes") {
+		igt_require(xe_has_vram(fd));
+		xe_for_each_tile(fd, tile, total_tiles) {
+			vram_size = xe_vram_size(fd, tile);
+			test_vram_physical_vram_size_bytes(sysfs, tile, vram_size);
+		}
+	}
+
+	igt_fixture {
+		close(sysfs);
+		xe_device_put(fd);
+		close(fd);
+	}
+}
-- 
2.25.1