[PATCH i-g-t 5/8] tests/perf: Add testcase to verify tag

[Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>]

Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
---
 tests/intel_perf_dapc.c | 134 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)

diff --git a/tests/intel_perf_dapc.c b/tests/intel_perf_dapc.c
index afd49f4..a9903fb 100644
--- a/tests/intel_perf_dapc.c
+++ b/tests/intel_perf_dapc.c
@@ -515,6 +515,16 @@ get_perf_report_size(uint64_t *properties, int prop_size, int format_id)
 	return sample_size;
 }
 
+static size_t
+get_perf_report_size_nonoa(uint64_t *properties, int prop_size)
+{
+	size_t sample_size = 0;
+
+	sample_size += get_oa_report_offset(properties, prop_size);
+
+	return sample_size;
+}
+
 static bool
 read_perf_reports(int stream_fd,
 		  uint8_t *perf_reports,
@@ -935,6 +945,127 @@ test_perf_pid(void)
 	igt_waitchildren();
 }
 
+struct ts_tag_sample {
+	uint64_t tag;
+	uint64_t ts;
+};
+
+static void
+verify_tag(uint8_t *perf_reports, int num_reports, size_t report_size,
+	   uint64_t tag, int match_index)
+{
+	struct ts_tag_sample *sample;
+
+	for (int i = 0; i < num_reports; i++) {
+		size_t offset = i * report_size;
+
+		sample = (struct ts_tag_sample *) (perf_reports + offset);
+
+		igt_debug("read report: tag= %lu, timestamp = %lu\n",
+			  sample->tag, sample->ts);
+
+		if (i < match_index)
+			igt_assert(sample->tag != tag);
+		else
+			igt_assert(sample->tag == tag);
+	}
+}
+
+#define LOCAL_I915_EXEC_NO_RELOC (1<<11)
+#define LOCAL_I915_EXEC_HANDLE_LUT (1<<12)
+
+static void
+test_perf_tag(void)
+{
+	uint64_t properties[] = {
+		/* CS parameters */
+		DRM_I915_PERF_PROP_ENGINE, I915_EXEC_RENDER,
+		DRM_I915_PERF_PROP_SAMPLE_TAG, true,
+		DRM_I915_PERF_PROP_SAMPLE_TS, true,
+	};
+	struct drm_i915_perf_open_param param = {
+		.flags = I915_PERF_FLAG_FD_CLOEXEC,
+		.num_properties = sizeof(properties) / 16,
+		.properties_ptr = to_user_pointer(properties),
+	};
+
+	/* should be default, but just to be sure... */
+	write_u64_file("/proc/sys/dev/i915/perf_stream_paranoid", 1);
+
+	igt_fork(child, 1) {
+		const int gen = intel_gen(intel_get_drm_devid(drm_fd));
+		int prop_size = ARRAY_SIZE(properties);
+		int report_size = get_perf_report_size_nonoa(properties,
+							     prop_size);
+		int num_reports = 4;
+		int total_size = num_reports * report_size;
+		int stream_fd;
+		bool valid_data = false;
+		uint64_t test_tag = 0xFEED0001;
+		uint8_t *perf_reports = NULL;
+		const uint32_t bbe = MI_BATCH_BUFFER_END;
+		struct drm_i915_gem_exec_object2 object[1];
+		struct drm_i915_gem_execbuffer2 execbuf;
+		drm_intel_bufmgr *bufmgr;
+		drm_intel_context *context0;
+		uint32_t ctx_id = 0xffffffff; /* invalid id */
+		int ret;
+
+		memset(&execbuf, 0, sizeof(execbuf));
+		execbuf.buffers_ptr = to_user_pointer(object);
+		execbuf.flags = I915_EXEC_RENDER;
+		execbuf.flags |= LOCAL_I915_EXEC_NO_RELOC;
+		execbuf.flags |= LOCAL_I915_EXEC_HANDLE_LUT;
+		if (gen < 6)
+			execbuf.flags |= I915_EXEC_SECURE;
+
+		memset(object, 0, sizeof(object));
+		object[0].handle = gem_create(drm_fd, 4096);
+		gem_write(drm_fd, object[0].handle, 0, &bbe, sizeof(bbe));
+
+		bufmgr = drm_intel_bufmgr_gem_init(drm_fd, 4096);
+		drm_intel_bufmgr_gem_enable_reuse(bufmgr);
+
+		context0 = drm_intel_gem_context_create(bufmgr);
+		igt_assert(context0);
+
+		ret = drm_intel_gem_context_get_id(context0, &ctx_id);
+		igt_assert_eq(ret, 0);
+		igt_assert_neq(ctx_id, 0xffffffff);
+
+		perf_reports = malloc(total_size);
+		igt_assert(perf_reports);
+
+		igt_debug("opening render i915-perf stream\n");
+		stream_fd = __perf_open(drm_fd, &param);
+
+		execbuf.buffer_count = 1;
+		/* Do a submission with default tag */
+		gem_execbuf(drm_fd, &execbuf);
+
+		i915_execbuffer2_set_tag(execbuf, (uint64_t)test_tag);
+		/* Now submit with user tag */
+		gem_execbuf(drm_fd, &execbuf);
+
+		gem_close(drm_fd, object[0].handle);
+
+		drm_intel_gem_context_destroy(context0);
+		drm_intel_bufmgr_destroy(bufmgr);
+
+		valid_data = read_perf_reports(stream_fd, perf_reports,
+					       num_reports, report_size,
+					       false);
+		igt_assert(valid_data);
+		close(stream_fd);
+
+		igt_debug("Verify tag: %lu\n", test_tag);
+		verify_tag(perf_reports, num_reports, report_size,
+			   test_tag, 2);
+		free(perf_reports);
+	}
+	igt_waitchildren();
+}
+
 igt_main
 {
 	igt_skip_on_simulation();
@@ -962,6 +1093,9 @@ igt_main
 	igt_subtest("perf-pid")
 		test_perf_pid();
 
+	igt_subtest("perf-tag")
+		test_perf_tag();
+
 	igt_fixture {
 		close(drm_fd);
 	}
-- 
1.9.1

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