From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2CA7E10E00E for ; Wed, 15 Mar 2023 21:05:24 +0000 (UTC) From: Mohammed Thasleem To: igt-dev@lists.freedesktop.org Date: Thu, 16 Mar 2023 02:31:46 +0530 Message-Id: <20230315210147.19557-2-mohammed.thasleem@intel.com> In-Reply-To: <20230315210147.19557-1-mohammed.thasleem@intel.com> References: <20230315210147.19557-1-mohammed.thasleem@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [igt-dev] [PATCH i-g-t 1/2] tests/i915/i915_pm_dc: Add DC6 DPMS test for mtl List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" List-ID: The flow for DC6 validation has changed for MTL. DC6 state achieved based on PKGC10 entry. This test validates PKGC10 entry and confirm DC6 achieved Signed-off-by: Mohammed Thasleem --- tests/i915/i915_pm_dc.c | 38 +++++++++++++++++++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-) diff --git a/tests/i915/i915_pm_dc.c b/tests/i915/i915_pm_dc.c index 1c695b50..322a0c60 100644 --- a/tests/i915/i915_pm_dc.c +++ b/tests/i915/i915_pm_dc.c @@ -45,6 +45,7 @@ #define PWR_DOMAIN_INFO "i915_power_domain_info" #define RPM_STATUS "i915_runtime_pm_status" #define KMS_HELPER "/sys/module/drm_kms_helper/parameters/" +#define PACKAGE_STATE_PATH "/sys/kernel/debug/pmc_core/" #define KMS_POLL_DISABLE 0 #define DC9_RESETS_DC_COUNTERS(devid) (!(IS_DG1(devid) || IS_DG2(devid))) @@ -60,6 +61,7 @@ typedef struct { int drm_fd; int msr_fd; int debugfs_fd; + int pmc_fd; uint32_t devid; char *debugfs_dump; igt_display_t display; @@ -519,6 +521,36 @@ static int has_panels_without_dc_support(igt_display_t *display) return external_panel; } +static unsigned int read_pkc_state_value(int pmc_fd) +{ + char buf[4096]; + char *str; + + igt_require((pmc_fd = open(PACKAGE_STATE_PATH, O_RDONLY)) >= 0); + + igt_debugfs_simple_read(pmc_fd, "package_cstate_show", + buf, sizeof(buf)); + igt_skip_on_f(!strstr(buf, "Package C10"), + "PK10 will be not supported.\n"); + str = strstr(buf, "Package C10"); + igt_assert_f(str, "PKC10 value not available\n"); + + return get_dc_counter(str); +} + +static void test_pkc_state_dpms(data_t *data) +{ + unsigned int timeout_msec = 30; + unsigned int prev_value = 0, cur_value = 0; + + prev_value = read_pkc_state_value(data->pmc_fd); + dpms_off(data); + igt_wait((cur_value = read_pkc_state_value(data->pmc_fd)), + timeout_msec * 1000, 100); + igt_assert_f(cur_value > prev_value, "PK10 is not achieived.\n"); + dpms_on(data); +} + static void kms_poll_state_restore(int sig) { int sysfs_fd; @@ -600,7 +632,11 @@ igt_main igt_subtest("dc6-dpms") { igt_require_f(igt_pm_pc8_plus_residencies_enabled(data.msr_fd), "PC8+ residencies not supported\n"); - test_dc_state_dpms(&data, CHECK_DC6); + if (intel_display_ver(data.devid) == 14) + test_pkc_state_dpms(&data); + else + test_dc_state_dpms(&data, CHECK_DC6); + } igt_describe("This test validates display engine entry to DC9 state"); -- 2.25.1