Signed-off-by: Sagar Arun Kamble <[email protected]>
---
tests/intel_perf_dapc.c | 291 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 291 insertions(+)
diff --git a/tests/intel_perf_dapc.c b/tests/intel_perf_dapc.c
index 1831a81..ac6f3d1 100644
--- a/tests/intel_perf_dapc.c
+++ b/tests/intel_perf_dapc.c
@@ -1138,6 +1138,291 @@ test_perf_ts(void)
igt_waitchildren();
}
+static char *
+read_debugfs_record(int device, const char *file, const char *key)
+{
+ FILE *fp;
+ int fd;
+ char *line = NULL;
+ size_t line_buf_size = 0;
+ int len = 0;
+ int key_len = strlen(key);
+ char *value = NULL;
+
+ fd = igt_debugfs_open(device, file, O_RDONLY);
+ fp = fdopen(fd, "r");
+ igt_require(fp);
+
+ while ((len = getline(&line, &line_buf_size, fp)) > 0) {
+
+ if (line[len - 1] == '\n')
+ line[len - 1] = '\0';
+
+ if (strncmp(key, line, key_len) == 0 &&
+ line[key_len] == ':' &&
+ line[key_len + 1] == ' ') {
+ value = strdup(line + key_len + 2);
+ goto done;
+ }
+ }
+
+ igt_assert(!"reached");
+done:
+ free(line);
+ fclose(fp);
+ close(fd);
+ return value;
+}
+
+static uint64_t
+read_debugfs_u64_record(int fd, const char *file, const char *key)
+{
+ char *str_val = read_debugfs_record(fd, file, key);
+ uint64_t val;
+
+ igt_require(str_val);
+
+ val = strtoull(str_val, NULL, 0);
+ free(str_val);
+
+ return val;
+}
+
+/* Logic taken from i915 source. */
+static uint64_t
+intel_rc6_residency_us(uint64_t time_hw)
+{
+ uint64_t units, div;
+
+ if (IS_GEMINILAKE(devid) || IS_BROXTON(devid)) {
+ units = 1000;
+ div = 1200; /* 833.33ns */
+ } else {
+ units = 128000; /* 1.28us */
+ div = 100000;
+ }
+
+ return ((time_hw * units) / div);
+}
+
+struct oa_mmio_sample {
+ uint32_t mmio[2];
+ uint8_t oa_report[];
+};
+
+static void
+verify_oa_mmio(uint8_t *perf_reports, int num_reports, size_t report_size,
+ uint64_t *pre_mmio_residency, uint64_t *post_mmio_residency)
+{
+ struct oa_mmio_sample *sample;
+ uint64_t rc6_residency;
+ uint64_t rc6p_residency;
+ uint32_t *oa_report;
+
+ igt_debug("pre rc6 residency = %lu, rc6p residency = %lu, "
+ "post rc6 residency = %lu, rc6p residency = %lu\n",
+ pre_mmio_residency[0], pre_mmio_residency[1],
+ post_mmio_residency[0], post_mmio_residency[1]);
+
+ for (int i = 0; i < num_reports; i++) {
+ size_t offset = i * report_size;
+
+ sample = (struct oa_mmio_sample *) (perf_reports + offset);
+ oa_report = (uint32_t *) sample->oa_report;
+
+ rc6_residency = intel_rc6_residency_us(sample->mmio[0]);
+ rc6p_residency = intel_rc6_residency_us(sample->mmio[1]);
+
+ igt_debug("read mmio: rc6 = %u, rc6 residency = %lu, "
+ "rc6p = %u, rc6p residency = %lu\n",
+ sample->mmio[0], rc6_residency,
+ sample->mmio[1], rc6p_residency);
+
+ igt_debug("read report: reason = %x, timestamp = %x\n",
+ oa_report[0], oa_report[1]);
+
+ if (!oa_report[0]) {
+ igt_assert(rc6_residency >= pre_mmio_residency[0]);
+ igt_assert(rc6p_residency >= pre_mmio_residency[1]);
+ igt_assert(rc6_residency <= post_mmio_residency[0]);
+ igt_assert(rc6p_residency <= post_mmio_residency[1]);
+ }
+ }
+}
+
+static void
+test_perf_oa_mmio(void)
+{
+ uint64_t properties[] = {
+ /* Include OA reports in samples */
+ DRM_I915_PERF_PROP_SAMPLE_OA, true,
+
+ /* OA unit configuration */
+ DRM_I915_PERF_PROP_OA_METRICS_SET, test_metric_set_id,
+ DRM_I915_PERF_PROP_OA_FORMAT, test_oa_format,
+ DRM_I915_PERF_PROP_OA_EXPONENT, oa_exp_1_millisec,
+
+ /* CS parameters */
+ DRM_I915_PERF_PROP_ENGINE, I915_EXEC_RENDER,
+ DRM_I915_PERF_PROP_SAMPLE_MMIO, 0,
+ };
+ struct drm_i915_perf_open_param param = {
+ .flags = I915_PERF_FLAG_FD_CLOEXEC,
+ .num_properties = sizeof(properties) / 16,
+ .properties_ptr = to_user_pointer(properties),
+ };
+ struct drm_i915_perf_mmio_list mmio;
+
+ memset(&mmio, 0, sizeof(mmio));
+
+#define GEN6_GT_GFX_RC6 0x138108
+#define GEN6_GT_GFX_RC6p 0x13810C
+ mmio.mmio_list[0] = GEN6_GT_GFX_RC6;
+ mmio.mmio_list[1] = GEN6_GT_GFX_RC6p;
+ mmio.num_mmio = 2;
+
+ properties[ARRAY_SIZE(properties) - 1] = (uint64_t)&mmio;
+
+ /* should be default, but just to be sure... */
+ write_u64_file("/proc/sys/dev/i915/perf_stream_paranoid", 1);
+
+ igt_fork(child, 1) {
+ int prop_size = ARRAY_SIZE(properties);
+ int num_reports = 10;
+ int report_size = get_perf_report_size(properties, prop_size,
+ test_oa_format);
+ int total_size = num_reports * report_size;
+ uint8_t *perf_reports = malloc(total_size);
+ uint64_t pre_mmio_residency[2], post_mmio_residency[2];
+
+ igt_assert(perf_reports);
+
+ pre_mmio_residency[0] = read_debugfs_u64_record(drm_fd,
+ "i915_drpc_info",
+ "RC6 residency since boot");
+ pre_mmio_residency[1] = read_debugfs_u64_record(drm_fd,
+ "i915_drpc_info",
+ "RC6+ residency since boot");
+ perf_stream_capture_workload_samples(¶m, perf_reports,
+ num_reports, report_size,
+ NULL);
+ post_mmio_residency[0] = read_debugfs_u64_record(drm_fd,
+ "i915_drpc_info",
+ "RC6 residency since boot");
+ post_mmio_residency[1] = read_debugfs_u64_record(drm_fd,
+ "i915_drpc_info",
+ "RC6+ residency since boot");
+ verify_oa_mmio(perf_reports, num_reports, report_size,
+ pre_mmio_residency, post_mmio_residency);
+ free(perf_reports);
+ }
+
+ igt_waitchildren();
+}
+
+struct ts_mmio_sample {
+ uint64_t ts;
+ uint32_t mmio[2];
+};
+
+static void
+verify_ts_mmio(uint8_t *perf_reports, int num_reports, size_t report_size,
+ uint64_t *pre_mmio_residency, uint64_t *post_mmio_residency)
+{
+ struct ts_mmio_sample *sample;
+ uint64_t rc6_residency;
+ uint64_t rc6p_residency;
+
+ igt_debug("pre rc6 residency = %lu, rc6p residency = %lu, "
+ "post rc6 residency = %lu, rc6p residency = %lu\n",
+ pre_mmio_residency[0], pre_mmio_residency[1],
+ post_mmio_residency[0], post_mmio_residency[1]);
+
+ for (int i = 0; i < num_reports; i++) {
+ size_t offset = i * report_size;
+
+ sample = (struct ts_mmio_sample *) (perf_reports + offset);
+
+ rc6_residency = intel_rc6_residency_us(sample->mmio[0]);
+ rc6p_residency = intel_rc6_residency_us(sample->mmio[1]);
+
+ igt_debug("read mmio: rc6 = %u, rc6 residency = %lu, "
+ "rc6p = %u, rc6p residency = %lu\n",
+ sample->mmio[0], rc6_residency,
+ sample->mmio[1], rc6p_residency);
+
+ igt_debug("read report: timestamp = %lu\n", sample->ts);
+
+ igt_assert(rc6_residency >= pre_mmio_residency[0]);
+ igt_assert(rc6p_residency >= pre_mmio_residency[1]);
+ igt_assert(rc6_residency <= post_mmio_residency[0]);
+ igt_assert(rc6p_residency <= post_mmio_residency[1]);
+ }
+}
+
+static void
+test_perf_ts_mmio(void)
+{
+ uint64_t properties[] = {
+ /* CS parameters */
+ DRM_I915_PERF_PROP_ENGINE, I915_EXEC_RENDER,
+ DRM_I915_PERF_PROP_SAMPLE_TS, true,
+ DRM_I915_PERF_PROP_SAMPLE_MMIO, 0,
+ };
+ struct drm_i915_perf_open_param param = {
+ .flags = I915_PERF_FLAG_FD_CLOEXEC,
+ .num_properties = sizeof(properties) / 16,
+ .properties_ptr = to_user_pointer(properties),
+ };
+ struct drm_i915_perf_mmio_list mmio;
+
+ memset(&mmio, 0, sizeof(mmio));
+
+#define GEN6_GT_GFX_RC6 0x138108
+#define GEN6_GT_GFX_RC6p 0x13810C
+ mmio.mmio_list[0] = GEN6_GT_GFX_RC6;
+ mmio.mmio_list[1] = GEN6_GT_GFX_RC6p;
+ mmio.num_mmio = 2;
+
+ properties[ARRAY_SIZE(properties) - 1] = (uint64_t)&mmio;
+
+ /* should be default, but just to be sure... */
+ write_u64_file("/proc/sys/dev/i915/perf_stream_paranoid", 1);
+
+ igt_fork(child, 1) {
+ int prop_size = ARRAY_SIZE(properties);
+ int num_reports = 2;
+ int report_size = get_perf_report_size_nonoa(properties,
+ prop_size);
+ int total_size = num_reports * report_size;
+ uint8_t *perf_reports = malloc(total_size);
+ uint64_t pre_mmio_residency[2], post_mmio_residency[2];
+
+ igt_assert(perf_reports);
+
+ pre_mmio_residency[0] = read_debugfs_u64_record(drm_fd,
+ "i915_drpc_info",
+ "RC6 residency since boot");
+ pre_mmio_residency[1] = read_debugfs_u64_record(drm_fd,
+ "i915_drpc_info",
+ "RC6+ residency since boot");
+ perf_stream_capture_workload_samples(¶m, perf_reports,
+ num_reports, report_size,
+ NULL);
+ post_mmio_residency[0] = read_debugfs_u64_record(drm_fd,
+ "i915_drpc_info",
+ "RC6 residency since boot");
+ post_mmio_residency[1] = read_debugfs_u64_record(drm_fd,
+ "i915_drpc_info",
+ "RC6+ residency since boot");
+ verify_ts_mmio(perf_reports, num_reports, report_size,
+ pre_mmio_residency, post_mmio_residency);
+ free(perf_reports);
+ }
+
+ igt_waitchildren();
+}
+
igt_main
{
igt_skip_on_simulation();
@@ -1171,6 +1456,12 @@ igt_main
igt_subtest("perf-ts")
test_perf_ts();
+ igt_subtest("perf-mmio") {
+ igt_require(intel_get_device_info(devid)->gen >= 9);
+ test_perf_ts_mmio();
+ test_perf_oa_mmio();
+ }
+
igt_fixture {
close(drm_fd);
}
--
1.9.1
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