From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 30AA0EC047F for ; Tue, 3 Mar 2026 09:39:23 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E222D10E740; Tue, 3 Mar 2026 09:39:22 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="A/zWMMws"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 55D4E10E754 for ; Tue, 3 Mar 2026 09:39:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1772530762; x=1804066762; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=bo1+bm32uNuw7oJMUy/NhmhUX1HBoUNNl3G+5m9iq+k=; b=A/zWMMws3HL6Oh61EjFdvUmjfPYyBqdXiXQv3aVx8dv0q0dLI9aQ60Tt dbZTHANls+lFsw7gXmNOyrywiUqS0+aM52EXNyba7uI02HgCr9Be13mz3 Zked7PzxOx8566iwjldn/mcOBQ/hEuphvkq7zjfxl7UADw/hXr1/46lHw IolEmnIA3rVo1uWllg3Te1VrQ5szSs5S4SGeHWp0Z1qXt3f9md9vuWgzD Jo8hfK3h45TyjnXtsRIjuxeWoXpvV//md5Q1AbyiSu59RnBE4Zsc8En7g 9tdj7M0eoSKPQ9/F3bsjA32NNK1zyf1wSYovUTPvp2MyQUQ71lPGGtFlQ A==; X-CSE-ConnectionGUID: YdMXy29NQDObPhDItAr5ww== X-CSE-MsgGUID: piC8b/BZQ/u1DtDPr+7KUw== X-IronPort-AV: E=McAfee;i="6800,10657,11717"; a="76160018" X-IronPort-AV: E=Sophos;i="6.21,321,1763452800"; d="scan'208";a="76160018" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Mar 2026 01:39:22 -0800 X-CSE-ConnectionGUID: wZw6SFZ0Sdq5dCpSnAqCsw== X-CSE-MsgGUID: QWcz/BycQZC+1h2N2QWnxA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,321,1763452800"; d="scan'208";a="222097855" Received: from jeevan-x299-aorus-gaming-3-pro.iind.intel.com ([10.227.90.91]) by ORVIESA003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Mar 2026 01:39:20 -0800 From: Jeevan B To: igt-dev@lists.freedesktop.org Cc: dibin.moolakadan.subrahmanian@intel.com, mohammed.thasleem@intel.com, Jeevan B Subject: [PATCH i-g-t 4/4] tests/intel/kms_pm_dc: Add new test for dc3co framedrop validation Date: Tue, 3 Mar 2026 15:09:28 +0530 Message-ID: <20260303093928.569925-5-jeevan.b@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260303093928.569925-1-jeevan.b@intel.com> References: <20260303093928.569925-1-jeevan.b@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" Add a new subtest to validate that no frame drops occur during DC3CO entry, ensuring that no frame drops are detected and DC3CO is successfully triggered during the test. Signed-off-by: Jeevan B --- tests/intel/kms_pm_dc.c | 83 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) diff --git a/tests/intel/kms_pm_dc.c b/tests/intel/kms_pm_dc.c index 10450474a..b0e35dca1 100644 --- a/tests/intel/kms_pm_dc.c +++ b/tests/intel/kms_pm_dc.c @@ -51,6 +51,10 @@ * Description: Make sure that system enters DC3CO when PSR2 is active and system * is in SLEEP state * + * SUBTEST: dc3co-framedrop-check + * Description: Verify that DC3CO entry does not cause frame drops and successfully + * enters the power state + * * SUBTEST: dc5-dpms * Description: Validate display engine entry to DC5 state while all connectors's * DPMS property set to OFF @@ -315,6 +319,50 @@ static void check_dc3co_with_videoplayback_like_load(data_t *data) check_dc_counter(data, IGT_INTEL_CHECK_DC3CO, dc3co_prev_cnt); } +static void check_framedrop(data_t *data) +{ + igt_plane_t *primary; + uint32_t dc3co_prev_cnt, dc3co_cnt; + int delay, frame_count, max_count = 100, ret; + bool dc3co_flag = false; + drmVBlank wait; + + primary = igt_output_get_plane_type(data->output, + DRM_PLANE_TYPE_PRIMARY); + igt_plane_set_fb(primary, NULL); + dc3co_prev_cnt = igt_read_dc_counter(data->debugfs_fd, + IGT_INTEL_CHECK_DC3CO); + + /* Calculate delay to generate idle frame in usec*/ + delay = 1.5 * ((1000 * 1000) / data->mode->vrefresh); + + for (int i = 0; i < max_count; i++) { + if (i % 2 == 0) + igt_plane_set_fb(primary, &data->fb_rgb); + else + igt_plane_set_fb(primary, &data->fb_rgr); + + igt_display_commit(&data->display); + frame_count++; + + memset(&wait, 0, sizeof(wait)); + wait.request.type = DRM_VBLANK_RELATIVE; + wait.request.sequence = 1; + + ret = drmWaitVBlank(data->drm_fd, &wait); + igt_assert_eq(ret, 0); + dc3co_cnt = igt_read_dc_counter(data->debugfs_fd, + IGT_INTEL_CHECK_DC3CO); + if (dc3co_cnt > dc3co_prev_cnt) + dc3co_flag = true; + + usleep(delay); + } + + igt_assert_f(dc3co_flag, "DC3CO entry failed.\n"); + igt_assert_f(frame_count == max_count, "Framedrop seen during vpb scenario.\n"); +} + static void setup_dc3co(data_t *data, enum psr_mode mode) { data->op_psr_mode = mode; @@ -333,6 +381,16 @@ static void test_dc3co_vpb_simulation(data_t *data, enum psr_mode mode) cleanup_dc3co_fbs(data); } +static void test_framedrop_dc3co(data_t *data, enum psr_mode mode) +{ + igt_require_dc_counter(data->debugfs_fd, IGT_INTEL_CHECK_DC3CO); + setup_output(data); + setup_dc3co(data, mode); + setup_videoplayback(data); + check_framedrop(data); + cleanup_dc3co_fbs(data); +} + static void test_dc5_retention_flops(data_t *data, int dc_flag) { uint32_t dc_counter_before_psr; @@ -660,6 +718,31 @@ int igt_main() } } + igt_describe("Verify that DC3CO entry does not cause frame drops " + "and successfully enters the power state"); + igt_subtest_with_dynamic("dc3co-framedrop-check") { + int modes[] = {PSR_MODE_2, PR_MODE}; + const char *append_subtest_name[2] = { + "psr2-", + "pr-", + }; + + for (int i = 0; i < ARRAY_SIZE(modes); i++) { + igt_dynamic_f("%s-dc3co-framedrop", append_subtest_name[i]) { + igt_require(psr_sink_support(data.drm_fd, data.debugfs_fd, + modes[i], NULL)); + + if (modes[i] == PSR_MODE_2) + igt_require(IS_TIGERLAKE(data.devid) || + intel_display_ver(data.devid) >= 35); + else if (modes[i] == PR_MODE) + igt_require(intel_display_ver(data.devid) >= 35); + + test_framedrop_dc3co(&data, modes[i]); + } + } + } + igt_describe("This test validates display engine entry to DC5 state " "while PSR is active"); igt_subtest("dc5-psr") { -- 2.43.0