From 348de76c82f3231689e908949e23020c4e53a23b Mon Sep 17 00:00:00 2001 From: Ashutosh Dixit Date: Fri, 5 Jul 2024 14:43:12 -0700 Subject: tests/intel/xe_oa: add remove OA config tests Add the following tests: * "invalid-create-userspace-config" * "invalid-remove-userspace-config" * "create-destroy-userspace-config" * "whitelisted-registers-userspace-config" v2: Rename xe perf layer as xe observation layer Signed-off-by: Ashutosh Dixit Reviewed-by: Umesh Nerlige Ramappa --- tests/intel/xe_oa.c | 333 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 333 insertions(+) diff --git a/tests/intel/xe_oa.c b/tests/intel/xe_oa.c index d2605c6f5..cf27e5dfc 100644 --- a/tests/intel/xe_oa.c +++ b/tests/intel/xe_oa.c @@ -534,6 +534,12 @@ write_u64_file(const char *path, uint64_t val) fclose(f); } +static bool +try_sysfs_read_u64(const char *path, uint64_t *val) +{ + return igt_sysfs_scanf(sysfs, path, "%"PRIu64, val) == 1; +} + static unsigned long rc6_residency_ms(void) { unsigned long value; @@ -3484,6 +3490,321 @@ test_stress_open_close(const struct drm_xe_engine_class_instance *hwe) load_helper_fini(); } +static int __xe_oa_add_config(int fd, struct drm_xe_oa_config *config) +{ + int ret = intel_xe_perf_ioctl(fd, DRM_XE_OBSERVATION_OP_ADD_CONFIG, config); + if (ret < 0) + ret = -errno; + return ret; +} + +static int xe_oa_add_config(int fd, struct drm_xe_oa_config *config) +{ + int config_id = __xe_oa_add_config(fd, config); + + igt_debug("config_id=%i\n", config_id); + igt_assert(config_id > 0); + + return config_id; +} + +static void xe_oa_remove_config(int fd, uint64_t config_id) +{ + igt_assert_eq(intel_xe_perf_ioctl(fd, DRM_XE_OBSERVATION_OP_REMOVE_CONFIG, &config_id), 0); +} + +static bool has_xe_oa_userspace_config(int fd) +{ + uint64_t config = 0; + int ret = intel_xe_perf_ioctl(fd, DRM_XE_OBSERVATION_OP_REMOVE_CONFIG, &config); + igt_assert_eq(ret, -1); + + igt_debug("errno=%i\n", errno); + + return errno != EINVAL; +} + +#define SAMPLE_MUX_REG (intel_graphics_ver(devid) >= IP_VER(20, 0) ? \ + 0x13000 /* PES* */ : 0x9888 /* NOA_WRITE */) + +/** + * SUBTEST: invalid-create-userspace-config + * Description: Test invalid configs are rejected + */ +static void +test_invalid_create_userspace_config(void) +{ + struct drm_xe_oa_config config; + const char *uuid = "01234567-0123-0123-0123-0123456789ab"; + const char *invalid_uuid = "blablabla-wrong"; + uint32_t mux_regs[] = { SAMPLE_MUX_REG, 0x0 }; + uint32_t invalid_mux_regs[] = { 0x12345678 /* invalid register */, 0x0 }; + + igt_require(has_xe_oa_userspace_config(drm_fd)); + + memset(&config, 0, sizeof(config)); + + /* invalid uuid */ + strncpy(config.uuid, invalid_uuid, sizeof(config.uuid)); + config.n_regs = 1; + config.regs_ptr = to_user_pointer(mux_regs); + + igt_assert_eq(__xe_oa_add_config(drm_fd, &config), -EINVAL); + + /* invalid mux_regs */ + memcpy(config.uuid, uuid, sizeof(config.uuid)); + config.n_regs = 1; + config.regs_ptr = to_user_pointer(invalid_mux_regs); + + igt_assert_eq(__xe_oa_add_config(drm_fd, &config), -EINVAL); + + /* empty config */ + memcpy(config.uuid, uuid, sizeof(config.uuid)); + config.n_regs = 0; + config.regs_ptr = to_user_pointer(mux_regs); + + igt_assert_eq(__xe_oa_add_config(drm_fd, &config), -EINVAL); + + /* empty config with null pointer */ + memcpy(config.uuid, uuid, sizeof(config.uuid)); + config.n_regs = 1; + config.regs_ptr = to_user_pointer(NULL); + + igt_assert_eq(__xe_oa_add_config(drm_fd, &config), -EINVAL); + + /* invalid pointer */ + memcpy(config.uuid, uuid, sizeof(config.uuid)); + config.n_regs = 42; + config.regs_ptr = to_user_pointer((void *) 0xDEADBEEF); + + igt_assert_eq(__xe_oa_add_config(drm_fd, &config), -EFAULT); +} + +/** + * SUBTEST: invalid-remove-userspace-config + * Description: Test invalid remove configs are rejected + */ +static void +test_invalid_remove_userspace_config(void) +{ + struct drm_xe_oa_config config; + const char *uuid = "01234567-0123-0123-0123-0123456789ab"; + uint32_t mux_regs[] = { SAMPLE_MUX_REG, 0x0 }; + uint64_t config_id, wrong_config_id = 999999999; + char path[512]; + + igt_require(has_xe_oa_userspace_config(drm_fd)); + + snprintf(path, sizeof(path), "metrics/%s/id", uuid); + + /* Destroy previous configuration if present */ + if (try_sysfs_read_u64(path, &config_id)) + xe_oa_remove_config(drm_fd, config_id); + + memset(&config, 0, sizeof(config)); + + memcpy(config.uuid, uuid, sizeof(config.uuid)); + + config.n_regs = 1; + config.regs_ptr = to_user_pointer(mux_regs); + + config_id = xe_oa_add_config(drm_fd, &config); + + /* Removing configs without permissions should fail. */ + igt_fork(child, 1) { + igt_drop_root(); + + intel_xe_perf_ioctl_err(drm_fd, DRM_XE_OBSERVATION_OP_REMOVE_CONFIG, &config_id, EACCES); + } + igt_waitchildren(); + + /* Removing invalid config ID should fail. */ + intel_xe_perf_ioctl_err(drm_fd, DRM_XE_OBSERVATION_OP_REMOVE_CONFIG, &wrong_config_id, ENOENT); + + xe_oa_remove_config(drm_fd, config_id); +} + +/** + * SUBTEST: create-destroy-userspace-config + * Description: Test add/remove OA configs + */ +static void +test_create_destroy_userspace_config(void) +{ + struct drm_xe_oa_config config; + const char *uuid = "01234567-0123-0123-0123-0123456789ab"; + uint32_t mux_regs[] = { SAMPLE_MUX_REG, 0x0 }; + uint32_t regs[100]; + int i; + uint64_t config_id; + uint64_t properties[] = { + DRM_XE_OA_PROPERTY_OA_UNIT_ID, 0, + + DRM_XE_OA_PROPERTY_OA_METRIC_SET, 0, /* Filled later */ + + /* OA unit configuration */ + DRM_XE_OA_PROPERTY_SAMPLE_OA, true, + DRM_XE_OA_PROPERTY_OA_FORMAT, __ff(default_test_set->perf_oa_format), + DRM_XE_OA_PROPERTY_OA_PERIOD_EXPONENT, oa_exp_1_millisec, + DRM_XE_OA_PROPERTY_OA_DISABLED, true, + DRM_XE_OA_PROPERTY_OA_METRIC_SET + }; + struct intel_xe_oa_open_prop param = { + .num_properties = ARRAY_SIZE(properties) / 2, + .properties_ptr = to_user_pointer(properties), + }; + char path[512]; + + igt_require(has_xe_oa_userspace_config(drm_fd)); + + snprintf(path, sizeof(path), "metrics/%s/id", uuid); + + /* Destroy previous configuration if present */ + if (try_sysfs_read_u64(path, &config_id)) + xe_oa_remove_config(drm_fd, config_id); + + memset(&config, 0, sizeof(config)); + memcpy(config.uuid, uuid, sizeof(config.uuid)); + + regs[0] = mux_regs[0]; + regs[1] = mux_regs[1]; + /* Flex EU counters */ + for (i = 1; i < ARRAY_SIZE(regs) / 2; i++) { + regs[i * 2] = 0xe458; /* EU_PERF_CNTL0 */ + regs[i * 2 + 1] = 0x0; + } + config.regs_ptr = to_user_pointer(regs); + config.n_regs = ARRAY_SIZE(regs) / 2; + + /* Creating configs without permissions shouldn't work. */ + igt_fork(child, 1) { + igt_drop_root(); + + igt_assert_eq(__xe_oa_add_config(drm_fd, &config), -EACCES); + } + igt_waitchildren(); + + /* Create a new config */ + config_id = xe_oa_add_config(drm_fd, &config); + + /* Verify that adding the another config with the same uuid fails. */ + igt_assert_eq(__xe_oa_add_config(drm_fd, &config), -EADDRINUSE); + + /* Try to use the new config */ + properties[3] = config_id; + stream_fd = __perf_open(drm_fd, ¶m, false); + + /* Verify that destroying the config doesn't yield any error. */ + xe_oa_remove_config(drm_fd, config_id); + + /* Read the config to verify shouldn't raise any issue. */ + config_id = xe_oa_add_config(drm_fd, &config); + + __perf_close(stream_fd); + + xe_oa_remove_config(drm_fd, config_id); +} + +/** + * SUBTEST: whitelisted-registers-userspace-config + * Description: Test that an OA config constructed using whitelisted register works + */ +/* Registers required by userspace. This list should be maintained by + * the OA configs developers and agreed upon with kernel developers as + * some of the registers have bits used by the kernel (for workarounds + * for instance) and other bits that need to be set by the OA configs. + */ +static void +test_whitelisted_registers_userspace_config(void) +{ + struct drm_xe_oa_config config; + const char *uuid = "01234567-0123-0123-0123-0123456789ab"; + uint32_t regs[600]; + uint32_t i; + uint32_t oa_start_trig1, oa_start_trig8; + uint32_t oa_report_trig1, oa_report_trig8; + uint64_t config_id; + char path[512]; + int ret; + const uint32_t flex[] = { + 0xe458, + 0xe558, + 0xe658, + 0xe758, + 0xe45c, + 0xe55c, + 0xe65c + }; + + igt_require(has_xe_oa_userspace_config(drm_fd)); + + snprintf(path, sizeof(path), "metrics/%s/id", uuid); + + if (try_sysfs_read_u64(path, &config_id)) + xe_oa_remove_config(drm_fd, config_id); + + memset(&config, 0, sizeof(config)); + memcpy(config.uuid, uuid, sizeof(config.uuid)); + + oa_start_trig1 = 0xd900; + oa_start_trig8 = 0xd91c; + oa_report_trig1 = 0xd920; + oa_report_trig8 = 0xd93c; + + /* b_counters_regs: OASTARTTRIG[1-8] */ + for (i = oa_start_trig1; i <= oa_start_trig8; i += 4) { + regs[config.n_regs * 2] = i; + regs[config.n_regs * 2 + 1] = 0; + config.n_regs++; + } + /* b_counters_regs: OAREPORTTRIG[1-8] */ + for (i = oa_report_trig1; i <= oa_report_trig8; i += 4) { + regs[config.n_regs * 2] = i; + regs[config.n_regs * 2 + 1] = 0; + config.n_regs++; + } + + /* Flex EU registers, only from Gen8+. */ + for (i = 0; i < ARRAY_SIZE(flex); i++) { + regs[config.n_regs * 2] = flex[i]; + regs[config.n_regs * 2 + 1] = 0; + config.n_regs++; + } + + /* Mux registers (too many of them, just checking bounds) */ + /* NOA_WRITE */ + regs[config.n_regs * 2] = SAMPLE_MUX_REG; + regs[config.n_regs * 2 + 1] = 0; + config.n_regs++; + + /* NOA_CONFIG */ + /* Prior to Xe2 */ + if (intel_graphics_ver(devid) < IP_VER(20, 0)) { + regs[config.n_regs * 2] = 0xD04; + regs[config.n_regs * 2 + 1] = 0; + config.n_regs++; + regs[config.n_regs * 2] = 0xD2C; + regs[config.n_regs * 2 + 1] = 0; + config.n_regs++; + } + /* Prior to MTLx */ + if (intel_graphics_ver(devid) < IP_VER(12, 70)) { + /* WAIT_FOR_RC6_EXIT */ + regs[config.n_regs * 2] = 0x20CC; + regs[config.n_regs * 2 + 1] = 0; + config.n_regs++; + } + + config.regs_ptr = (uintptr_t) regs; + + /* Create a new config */ + ret = intel_xe_perf_ioctl(drm_fd, DRM_XE_OBSERVATION_OP_ADD_CONFIG, &config); + igt_assert(ret > 0); /* Config 0 should be used by the kernel */ + config_id = ret; + + xe_oa_remove_config(drm_fd, config_id); +} + /** * SUBTEST: xe-ref-count * Description: Check that an open oa stream holds a reference on the xe module @@ -3894,6 +4215,18 @@ igt_main test_stress_open_close(hwe); } + igt_subtest("invalid-create-userspace-config") + test_invalid_create_userspace_config(); + + igt_subtest("invalid-remove-userspace-config") + test_invalid_remove_userspace_config(); + + igt_subtest("create-destroy-userspace-config") + test_create_destroy_userspace_config(); + + igt_subtest("whitelisted-registers-userspace-config") + test_whitelisted_registers_userspace_config(); + igt_fixture { /* leave sysctl options in their default state... */ write_u64_file("/proc/sys/dev/xe/observation_paranoid", 1); -- cgit v1.2.3