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 62C36CCF9F8 for ; Wed, 5 Nov 2025 18:33:13 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2236110E2F5; Wed, 5 Nov 2025 18:33:13 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="U2vcLhvS"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6A74310E2F5 for ; Wed, 5 Nov 2025 18:33:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1762367592; x=1793903592; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=S3K9B4ixORgLa0PVxjyqx2G3KCFQSQXpQqRNx6/BcRs=; b=U2vcLhvS7aqAYFWH7bssCgsnfEGW6GkpvzLge1cLcGg+JdZYrBrcwHJ4 WjJQOWWRO+FXJELIVMwQOPI/pnBxrTF/U1+fQKqUP9TZkah08AlFGsYXG 2S5BhD15uLyFGvpaXe0xm8NIQbsdl5EfSZuEB+iGkCuQMdIegMaMs72eP enZxpGQKtktnkg3ibs4MwjoxI11PmJY1VECqrppfEqmmjQRIZtuEb7mDb kEd1tBdoV+bxXxTCrnOgjVm6LmkPFk8o4D8jkOcNf963goAUlSNZImJQR Bh/XgNZCSImXNJMi7+u5EONYJAUuSZRv/TYuz1PIkjo2tDk+A/O0pgDnO Q==; X-CSE-ConnectionGUID: 4OVPeHm+RIinQp9BStcddw== X-CSE-MsgGUID: JRdrucpMRemeL9MtY+bfcw== X-IronPort-AV: E=McAfee;i="6800,10657,11604"; a="64591480" X-IronPort-AV: E=Sophos;i="6.19,282,1754982000"; d="scan'208";a="64591480" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Nov 2025 10:33:12 -0800 X-CSE-ConnectionGUID: lkPYhL9cSCm5bItwzn8GXA== X-CSE-MsgGUID: 8Tgo1BrrTT63yHQostAfrA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,282,1754982000"; d="scan'208";a="187477937" Received: from mtripa2-mobl.gar.corp.intel.com (HELO mwajdecz-hp.clients.intel.com) ([10.94.252.236]) by orviesa007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Nov 2025 10:33:11 -0800 From: Michal Wajdeczko To: intel-xe@lists.freedesktop.org Cc: Michal Wajdeczko Subject: [PATCH 3/3] drm/xe/tests: Add KUnit tests for PF fair provisioning Date: Wed, 5 Nov 2025 19:32:52 +0100 Message-ID: <20251105183253.863-4-michal.wajdeczko@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251105183253.863-1-michal.wajdeczko@intel.com> References: <20251105183253.863-1-michal.wajdeczko@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" Add test cases to check outcome of fair GuC context or doorbells IDs allocations for regular and admin-only PF mode. Signed-off-by: Michal Wajdeczko --- .../xe/tests/xe_gt_sriov_pf_config_kunit.c | 162 ++++++++++++++++++ drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c | 4 + 2 files changed, 166 insertions(+) create mode 100644 drivers/gpu/drm/xe/tests/xe_gt_sriov_pf_config_kunit.c diff --git a/drivers/gpu/drm/xe/tests/xe_gt_sriov_pf_config_kunit.c b/drivers/gpu/drm/xe/tests/xe_gt_sriov_pf_config_kunit.c new file mode 100644 index 000000000000..162a8a1a1dc6 --- /dev/null +++ b/drivers/gpu/drm/xe/tests/xe_gt_sriov_pf_config_kunit.c @@ -0,0 +1,162 @@ +// SPDX-License-Identifier: GPL-2.0 AND MIT +/* + * Copyright © 2025 Intel Corporation + */ + +#include +#include +#include + +#include "xe_kunit_helpers.h" +#include "xe_pci_test.h" + +#define TEST_MAX_VFS 63 + +static void pf_set_admin_mode(struct xe_device *xe, bool enable) +{ + /* should match logic of xe_sriov_pf_admin_only() */ + xe->info.probe_display = !enable; + KUNIT_EXPECT_EQ(kunit_get_current_test(), enable, xe_sriov_pf_admin_only(xe)); +} + +static const void *num_vfs_gen_param(struct kunit *test, const void *prev, char *desc) +{ + unsigned long next = 1 + (unsigned long)prev; + + if (next > TEST_MAX_VFS) + return NULL; + snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%lu VF%s", + next, str_plural(next)); + return (void *)next; +} + +static int pf_gt_config_test_init(struct kunit *test) +{ + struct xe_pci_fake_data fake = { + .sriov_mode = XE_SRIOV_MODE_PF, + .platform = XE_TIGERLAKE, /* any random platform with SR-IOV */ + .subplatform = XE_SUBPLATFORM_NONE, + }; + struct xe_device *xe; + struct xe_gt *gt; + + test->priv = &fake; + xe_kunit_helper_xe_device_test_init(test); + + xe = test->priv; + KUNIT_ASSERT_TRUE(test, IS_SRIOV_PF(xe)); + + gt = xe_root_mmio_gt(xe); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, gt); + test->priv = gt; + + /* pretend it can support up to 63 VFs */ + xe->sriov.pf.device_total_vfs = TEST_MAX_VFS; + xe->sriov.pf.driver_max_vfs = TEST_MAX_VFS; + KUNIT_ASSERT_EQ(test, xe_sriov_pf_get_totalvfs(xe), 63); + + pf_set_admin_mode(xe, false); + KUNIT_ASSERT_EQ(test, xe_sriov_init(xe), 0); + + /* more sanity checks */ + KUNIT_EXPECT_EQ(test, GUC_ID_MAX + 1, SZ_64K); + KUNIT_EXPECT_EQ(test, GUC_NUM_DOORBELLS, SZ_256); + + return 0; +} + +static void fair_contexts_1vf(struct kunit *test) +{ + struct xe_gt *gt = test->priv; + struct xe_device *xe = gt_to_xe(gt); + + pf_set_admin_mode(xe, false); + KUNIT_ASSERT_FALSE(test, xe_sriov_pf_admin_only(xe)); + KUNIT_EXPECT_EQ(test, SZ_32K, pf_profile_fair_ctxs(gt, 1)); + + pf_set_admin_mode(xe, true); + KUNIT_ASSERT_TRUE(test, xe_sriov_pf_admin_only(xe)); + KUNIT_EXPECT_EQ(test, SZ_64K - SZ_1K, pf_profile_fair_ctxs(gt, 1)); +} + +static void fair_contexts(struct kunit *test) +{ + unsigned int num_vfs = (unsigned long)test->param_value; + struct xe_gt *gt = test->priv; + struct xe_device *xe = gt_to_xe(gt); + + pf_set_admin_mode(xe, false); + KUNIT_ASSERT_FALSE(test, xe_sriov_pf_admin_only(xe)); + + KUNIT_EXPECT_TRUE(test, is_power_of_2(pf_profile_fair_ctxs(gt, num_vfs))); + KUNIT_EXPECT_GT(test, GUC_ID_MAX, num_vfs * pf_profile_fair_ctxs(gt, num_vfs)); + + if (num_vfs > 31) + KUNIT_ASSERT_EQ(test, SZ_1K, pf_profile_fair_ctxs(gt, num_vfs)); + else if (num_vfs > 15) + KUNIT_ASSERT_EQ(test, SZ_2K, pf_profile_fair_ctxs(gt, num_vfs)); + else if (num_vfs > 7) + KUNIT_ASSERT_EQ(test, SZ_4K, pf_profile_fair_ctxs(gt, num_vfs)); + else if (num_vfs > 3) + KUNIT_ASSERT_EQ(test, SZ_8K, pf_profile_fair_ctxs(gt, num_vfs)); + else if (num_vfs > 1) + KUNIT_ASSERT_EQ(test, SZ_16K, pf_profile_fair_ctxs(gt, num_vfs)); + else + KUNIT_ASSERT_EQ(test, SZ_32K, pf_profile_fair_ctxs(gt, num_vfs)); +} + +static void fair_doorbells_1vf(struct kunit *test) +{ + struct xe_gt *gt = test->priv; + struct xe_device *xe = gt_to_xe(gt); + + pf_set_admin_mode(xe, false); + KUNIT_ASSERT_FALSE(test, xe_sriov_pf_admin_only(xe)); + KUNIT_EXPECT_EQ(test, 128, pf_profile_fair_dbs(gt, 1)); + + pf_set_admin_mode(xe, true); + KUNIT_ASSERT_TRUE(test, xe_sriov_pf_admin_only(xe)); + KUNIT_EXPECT_EQ(test, 240, pf_profile_fair_dbs(gt, 1)); +} + +static void fair_doorbells(struct kunit *test) +{ + unsigned int num_vfs = (unsigned long)test->param_value; + struct xe_gt *gt = test->priv; + struct xe_device *xe = gt_to_xe(gt); + + pf_set_admin_mode(xe, false); + KUNIT_ASSERT_FALSE(test, xe_sriov_pf_admin_only(xe)); + + KUNIT_EXPECT_TRUE(test, is_power_of_2(pf_profile_fair_dbs(gt, num_vfs))); + KUNIT_EXPECT_GE(test, GUC_NUM_DOORBELLS, (num_vfs + 1) * pf_profile_fair_dbs(gt, num_vfs)); + + if (num_vfs > 31) + KUNIT_ASSERT_EQ(test, SZ_4, pf_profile_fair_dbs(gt, num_vfs)); + else if (num_vfs > 15) + KUNIT_ASSERT_EQ(test, SZ_8, pf_profile_fair_dbs(gt, num_vfs)); + else if (num_vfs > 7) + KUNIT_ASSERT_EQ(test, SZ_16, pf_profile_fair_dbs(gt, num_vfs)); + else if (num_vfs > 3) + KUNIT_ASSERT_EQ(test, SZ_32, pf_profile_fair_dbs(gt, num_vfs)); + else if (num_vfs > 1) + KUNIT_ASSERT_EQ(test, SZ_64, pf_profile_fair_dbs(gt, num_vfs)); + else + KUNIT_ASSERT_EQ(test, SZ_128, pf_profile_fair_dbs(gt, num_vfs)); +} + +static struct kunit_case pf_gt_confit_test_cases[] = { + KUNIT_CASE(fair_contexts_1vf), + KUNIT_CASE(fair_doorbells_1vf), + KUNIT_CASE_PARAM(fair_contexts, num_vfs_gen_param), + KUNIT_CASE_PARAM(fair_doorbells, num_vfs_gen_param), + {} +}; + +static struct kunit_suite pf_gt_config_suite = { + .name = "pf_gt_config", + .test_cases = pf_gt_confit_test_cases, + .init = pf_gt_config_test_init, +}; + +kunit_test_suite(pf_gt_config_suite); diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c index 701889e5dded..80cc3f2cd047 100644 --- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c +++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c @@ -2826,3 +2826,7 @@ int xe_gt_sriov_pf_config_print_available_ggtt(struct xe_gt *gt, struct drm_prin return 0; } + +#if IS_BUILTIN(CONFIG_DRM_XE_KUNIT_TEST) +#include "tests/xe_gt_sriov_pf_config_kunit.c" +#endif -- 2.47.1