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 44A02D2ED08 for ; Wed, 1 Apr 2026 13:54:21 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E55CA10ECE6; Wed, 1 Apr 2026 13:54:20 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="B3PoK92S"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) by gabe.freedesktop.org (Postfix) with ESMTPS id 502AF10ECE4 for ; Wed, 1 Apr 2026 13:54:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1775051645; x=1806587645; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=StT4zG2+Pttzjt6vFX/sPOHVwx+DPIATd3vg85udjUc=; b=B3PoK92SprLtmgdRyAIHx/QLrN0wWxmJFJqsUzBF2geSx1cx08DA2mQp PHz1tcDqu+M6qo6lJ2nNxOV91Qie+vWc1PtIP31qu9rREAgrIJO3lWLRH F7KreeMWc2xl/yr2aRWkaIfQqVRhlDFUYU8eV1LDdKYlA3Yi5E9BzYx1W B7DPycVWvhNVEtj+vf0pGH/ncs4CKOpRXzOnlIDGT3pKK7gWvAyUmhQRm 1khliS/0gOEOHe6wGm64ZjsF01oHmvKLgwVFysltBAp4/FKgDbePNtzf3 maCsbUQ5FzNr7yhY+55g7gcOfiOSD3eSbxCP9D6fBMkRQaq2Lj6gNxsyy g==; X-CSE-ConnectionGUID: jVavt10DTGOuxOcx7coI5A== X-CSE-MsgGUID: UO8kn3SLRvK9RcQXxTGpxQ== X-IronPort-AV: E=McAfee;i="6800,10657,11745"; a="75972748" X-IronPort-AV: E=Sophos;i="6.23,153,1770624000"; d="scan'208";a="75972748" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2026 06:54:05 -0700 X-CSE-ConnectionGUID: 7OAdR3IVTi+5w/jcgPOAGg== X-CSE-MsgGUID: j3g/PQtSSX6jU5dejl5m0w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,153,1770624000"; d="scan'208";a="257161894" Received: from abityuts-desk.ger.corp.intel.com (HELO localhost) ([10.245.244.206]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2026 06:54:03 -0700 From: =?UTF-8?q?Zbigniew=20Kempczy=C5=84ski?= To: igt-dev@lists.freedesktop.org Cc: =?UTF-8?q?Zbigniew=20Kempczy=C5=84ski?= , Matthew Auld , Matt Roper , X Wang Subject: [PATCH i-g-t v7 4/4] tests/xe_pat: Verify PAT entries contain expected values Date: Wed, 1 Apr 2026 15:53:48 +0200 Message-ID: <20260401135343.2874239-10-zbigniew.kempczynski@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260401135343.2874239-6-zbigniew.kempczynski@intel.com> References: <20260401135343.2874239-6-zbigniew.kempczynski@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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" Debugfs exposes PAT entries for different GTs so verify they contain expected values. Verify they are correct also in reset and suspend scenarios. Signed-off-by: Zbigniew Kempczyński Cc: Matthew Auld Cc: Matt Roper Cc: X Wang --- v4: Test is rewritten to support PAT + PTA + ATS entries. v6: Skip on !pf and assert in case of problem with access PAT (Wang) v7: Skip on vf --- tests/intel/xe_pat.c | 85 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) diff --git a/tests/intel/xe_pat.c b/tests/intel/xe_pat.c index 2e2d7e01e7..81c28677ac 100644 --- a/tests/intel/xe_pat.c +++ b/tests/intel/xe_pat.c @@ -19,6 +19,7 @@ #include "igt_fs.h" #include "igt_kmod.h" #include "igt_map.h" +#include "igt_sriov_device.h" #include "igt_syncobj.h" #include "igt_sysfs.h" #include "igt_vgem.h" @@ -238,6 +239,81 @@ static void pat_sanity(int fd) } } +enum pat_test_opts { + PAT_CHECK = 1, + PAT_RESET_GT = 2, + PAT_SUSPEND = 3, +}; + +/** + * SUBTEST: pat-sw-hw-compare + * Description: verify debugfs 'pat' reflects 'pat_sw_config' + * + * SUBTEST: pat-sw-hw-reset-compare + * Description: verify debugfs 'pat' reflects 'pat_sw_config' after gt reset + * + * SUBTEST: pat-sw-hw-suspend + * Description: verify debugfs 'pat' reflects 'pat_sw_config' after suspend + */ +static void pat_sw_hw_compare(int fd, enum pat_test_opts opts) +{ + bool matches = true; + int gt; + + igt_skip_on(intel_is_vf_device(fd)); + + xe_for_each_gt(fd, gt) { + struct intel_pat_cache pat_hw_config = {}; + struct intel_pat_cache pat_sw_config = {}; + int hw_entries, sw_entries; + + if (opts == PAT_RESET_GT) + xe_force_gt_reset_sync(fd, gt); + else if (opts == PAT_SUSPEND) + igt_system_suspend_autoresume(SUSPEND_STATE_STANDBY, SUSPEND_TEST_NONE); + + hw_entries = xe_get_pat_hw_config(fd, &pat_hw_config, gt); + sw_entries = xe_get_pat_sw_config(fd, &pat_sw_config, gt); + + igt_debug("[GT%d] hw_entries: %d, sw_entries: %d\n", gt, hw_entries, sw_entries); + + igt_assert_eq(hw_entries, sw_entries); + igt_assert_lt(0, hw_entries); + igt_assert_lt(0, sw_entries); + + for (int i = 0; i < hw_entries; i++) { + uint32_t hw_pat, sw_pat; + + hw_pat = pat_hw_config.entries[i].pat; + sw_pat = pat_sw_config.entries[i].pat; + if (hw_pat != sw_pat) { + igt_debug("[GT%d] Mismatch of pat register vs sw config " + "- index: %i, entries: %08x <> %08x\n", + gt, i, hw_pat, sw_pat); + matches = false; + } + } + + /* Check PTA if was explicitly programmed */ + if (pat_sw_config.pta_mode != UINT32_MAX && + pat_hw_config.pta_mode != pat_sw_config.pta_mode) { + igt_debug("[GT%d] Mismatch of PTA_MODE - pta: %x, pta expected: %x\n", + gt, pat_hw_config.pta_mode, pat_sw_config.pta_mode); + matches = false; + } + + /* Check ATS if was explicitly programmed */ + if (pat_sw_config.pat_ats != UINT32_MAX && + pat_hw_config.pat_ats != pat_sw_config.pat_ats) { + igt_debug("[GT%d] Mismatch of PAT_ATS - ats: %x, ats expected: %x\n", + gt, pat_hw_config.pat_ats, pat_sw_config.pat_ats); + matches = false; + } + } + + igt_assert_eq(matches, true); +} + /** * SUBTEST: pat-index-all * Test category: functionality test @@ -2152,6 +2228,15 @@ int igt_main_args("V", NULL, help_str, opt_handler, NULL) igt_subtest("pat-sanity") pat_sanity(fd); + igt_subtest("pat-sw-hw-compare") + pat_sw_hw_compare(fd, 0); + + igt_subtest("pat-sw-hw-reset-compare") + pat_sw_hw_compare(fd, PAT_RESET_GT); + + igt_subtest("pat-sw-hw-suspend") + pat_sw_hw_compare(fd, PAT_SUSPEND); + igt_subtest("pat-index-all") pat_index_all(fd); -- 2.43.0