[Intel-gfx] [IGT] IGT/tests/firmware: Test firmware loading by reading debugfs

[Anusha Srivatsa]

Read debugfs and sysfs entries to check for GuC
loading conditions.

The patch is still WIP. Once all check conditions are
covered, it can be extended to huc debugfs file too.

Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa at intel.com>
---
 tests/Makefile.sources |  1 +
 tests/test_firmware.c  | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 97 insertions(+)
 create mode 100644 tests/test_firmware.c

diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 0f4e39a..841fc54 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -234,6 +234,7 @@ TESTS_progs = \
 	template \
 	tools_test \
 	vgem_basic \
+	test_firmware \
 	vgem_slow \
 	$(NULL)
 
diff --git a/tests/test_firmware.c b/tests/test_firmware.c
new file mode 100644
index 0000000..a5d621a
--- /dev/null
+++ b/tests/test_firmware.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright © 2013 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.
+ *
+ * Authors: Anusha Srivatsa
+ *
+ */
+
+#include "igt.h"
+#include "stdio.h"
+#include "stdlib.h"
+#include "igt_sysfs.h"
+#include "igt_debugfs.h"
+#include "i915_drm.h"
+#include "fcntl.h"
+
+IGT_TEST_DESCRIPTION("Read contents of debugfs to check for firmware status.");
+
+static void guc_load(int drm_fd, int debugfs, int gen)
+{
+	char firmware_buf[250];
+	float fw_version_wanted;
+	float fw_version_found;
+	int ret;
+	int enable_guc_loading;
+	FILE *fp;
+
+	igt_skip_on_f(gen < 6,
+		      "GuC not available on platforms prior to Skylake\n");
+
+	igt_sysfs_scanf(debugfs, "i915_enable_guc_loading", "%d", &enable_guc_loading);
+	igt_skip_on_f(!(enable_guc_loading < 1), "GuC loading not enabled\n");
+
+	ret = igt_debugfs_open(drm_fd, "i915_guc_load_status", O_RDONLY);
+	fp = fdopen(ret, "r");
+	igt_fail_on_f(ret < 0, "Not able to open the debugfs file\n");
+
+	igt_debugfs_read(drm_fd, "i915_guc_load_status", firmware_buf);
+
+	fseek(fp, 99, SEEK_CUR);
+	fscanf(fp, "%f", &fw_version_wanted);
+	fseek(fp, 119, SEEK_SET);
+	fscanf(fp, "%f", &fw_version_found);
+
+	igt_fail_on_f((fw_version_wanted != fw_version_found),
+		      "Firmware version found not the version wanted\n");
+	igt_fail_on_f(strstr(firmware_buf, "fetch: NONE"),
+		      "Firmware not fetched\n");
+	igt_fail_on_f(strstr(firmware_buf, "fetch: SUCCESS") &&
+		      strstr(firmware_buf, "load: NONE "),
+		      "Firmware not loaded\n");
+}
+
+int drm_fd;
+int debugfs;
+int gen;
+
+igt_main
+{
+	igt_skip_on_simulation();
+	igt_fixture {
+		drm_fd = drm_open_driver(DRIVER_INTEL);
+		igt_require(drm_fd >= 0);
+
+		debugfs = igt_debugfs_dir(drm_fd);
+		gen = intel_gen(intel_get_drm_devid(drm_fd));
+	}
+
+	igt_subtest("guc-load-test")
+		guc_load(drm_fd, debugfs, gen);
+
+	igt_success();
+
+	igt_fixture {
+		close(debugfs);
+		close(drm_fd);
+	}
+}
-- 
2.7.4