From patchwork Tue Sep 26 09:26:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 726608 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 555C9E7D26E for ; Tue, 26 Sep 2023 09:27:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234207AbjIZJ11 (ORCPT ); Tue, 26 Sep 2023 05:27:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43120 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234237AbjIZJ1K (ORCPT ); Tue, 26 Sep 2023 05:27:10 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2795192; Tue, 26 Sep 2023 02:27:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695720421; x=1727256421; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=TAJiGm+JuAYUnyQirh3cHKdY9uGqPBhJyidvyEhPLkw=; b=kVr9I3aoW2JjbSUNn6LcB+vUUjLKsNCF7o+jHp99oqG8mNWIfsmxw8mj Dm+KJo8d5cO2dpKj430YwF9T2Eq8Yfd2xq7lULNaj1M1Tz3qWDMezRQgJ AjjkZ7imyb/oa2Y/BfQQ6ryFzjdgWGfeJ1S4VhIen7WeqQHrbR6i5TsGM 2dUeuJcqGjk1yToEnAaxNNxSTpLK5y4f/zdspkGmeqfIZO4b20JSpFS5l of8G96VYHdgdsGX8kvVBffwaZNqcc/7PaQTp83ZkGdN5ECI6Wgjp7O3wq hKDv2m7zSB2kCAv1xL7Cxnz7Uj/YGQep0PuuO9S09i4paRuTjE3Lxl5Od w==; X-IronPort-AV: E=McAfee;i="6600,9927,10843"; a="360905423" X-IronPort-AV: E=Sophos;i="6.03,177,1694761200"; d="scan'208";a="360905423" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Sep 2023 02:27:01 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10843"; a="1079642572" X-IronPort-AV: E=Sophos;i="6.03,177,1694761200"; d="scan'208";a="1079642572" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by fmsmga005.fm.intel.com with ESMTP; 26 Sep 2023 02:27:00 -0700 From: Yi Liu To: joro@8bytes.org, alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com, robin.murphy@arm.com, baolu.lu@linux.intel.com Cc: cohuck@redhat.com, eric.auger@redhat.com, nicolinc@nvidia.com, kvm@vger.kernel.org, mjrosato@linux.ibm.com, chao.p.peng@linux.intel.com, yi.l.liu@intel.com, yi.y.sun@linux.intel.com, peterx@redhat.com, jasowang@redhat.com, shameerali.kolothum.thodi@huawei.com, lulu@redhat.com, suravee.suthikulpanit@amd.com, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, zhenzhong.duan@intel.com, joao.m.martins@oracle.com Subject: [RFC 7/8] iommufd/selftest: Add coverage for iommufd pasid attach/detach Date: Tue, 26 Sep 2023 02:26:50 -0700 Message-Id: <20230926092651.17041-8-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230926092651.17041-1-yi.l.liu@intel.com> References: <20230926092651.17041-1-yi.l.liu@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org This tests iommufd pasid attach/replace/detach. Signed-off-by: Yi Liu --- tools/testing/selftests/iommu/iommufd.c | 172 ++++++++++++++++++ .../selftests/iommu/iommufd_fail_nth.c | 28 ++- tools/testing/selftests/iommu/iommufd_utils.h | 78 ++++++++ 3 files changed, 274 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index 7cf06a4635d8..92e20a18bbea 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -2022,4 +2022,176 @@ TEST_F(vfio_compat_mock_domain, huge_map) } } +FIXTURE(iommufd_device_pasid) +{ + int fd; + uint32_t ioas_id; + uint32_t hwpt_id; + uint32_t stdev_id; + uint32_t device_id; +}; + +FIXTURE_SETUP(iommufd_device_pasid) +{ + self->fd = open("/dev/iommu", O_RDWR); + ASSERT_NE(-1, self->fd); + test_ioctl_ioas_alloc(&self->ioas_id); + + test_cmd_mock_domain(self->ioas_id, &self->stdev_id, + &self->hwpt_id, &self->device_id); +} + +FIXTURE_TEARDOWN(iommufd_device_pasid) +{ + teardown_iommufd(self->fd, _metadata); +} + +TEST_F(iommufd_device_pasid, pasid_attach) +{ + if (self->device_id) { + struct iommu_hwpt_selftest data = { + .iotlb = IOMMU_TEST_IOTLB_DEFAULT, + }; + uint32_t nested_hwpt_id[2] = {}; + uint32_t parent_hwpt_id = 0; + uint32_t pasid = 100; + bool result; + + /* Allocate two nested hwpts sharing one common parent hwpt */ + test_cmd_hwpt_alloc(self->device_id, self->ioas_id, + IOMMU_HWPT_ALLOC_NEST_PARENT, + &parent_hwpt_id); + + test_cmd_hwpt_alloc_nested(self->device_id, parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_TYPE_SELFTEST, + &data, sizeof(data)); + test_cmd_hwpt_alloc_nested(self->device_id, parent_hwpt_id, 0, + &nested_hwpt_id[1], + IOMMU_HWPT_TYPE_SELFTEST, + &data, sizeof(data)); + + /* + * Attach ioas to pasid 100, should succeed, domain should + * be valid. + */ + test_cmd_pasid_attach(pasid, self->ioas_id); + ASSERT_EQ(0, + test_cmd_pasid_check_domain(self->fd, self->stdev_id, + pasid, self->hwpt_id, + &result)); + EXPECT_EQ(1, result); + + /* + * Try attach pasid 100 with self->ioas_id, should succeed + * as it is the same with existing hwpt. + */ + test_cmd_pasid_attach(pasid, self->ioas_id); + + /* + * Try attach pasid 100 with another hwpt, should FAIL + * as attach does not allow overwrite, use REPLACE instead. + */ + test_err_cmd_pasid_attach(EINVAL, pasid, nested_hwpt_id[0]); + + /* + * Detach hwpt from pasid 100, and check if the pasid 100 + * has null domain. Should be done before the next attach. + */ + test_cmd_pasid_detach(pasid); + ASSERT_EQ(0, + test_cmd_pasid_check_domain(self->fd, self->stdev_id, + pasid, 0, &result)); + EXPECT_EQ(1, result); + + /* + * Attach nested hwpt to pasid 100, should succeed, domain + * should be valid. + */ + test_cmd_pasid_attach(pasid, nested_hwpt_id[0]); + ASSERT_EQ(0, + test_cmd_pasid_check_domain(self->fd, self->stdev_id, + pasid, nested_hwpt_id[0], + &result)); + EXPECT_EQ(1, result); + + /* + * Detach hwpt from pasid 100, and check if the pasid 100 + * has null domain + */ + test_cmd_pasid_detach(pasid); + ASSERT_EQ(0, + test_cmd_pasid_check_domain(self->fd, self->stdev_id, + pasid, 0, &result)); + EXPECT_EQ(1, result); + + /* Replace tests */ + pasid = 200; + + /* + * Replace pasid 200 without attaching it first, should + * fail with -EINVAL. + */ + test_err_cmd_pasid_replace(EINVAL, pasid, parent_hwpt_id); + + /* + * Attach a s2 hwpt to pasid 200, should succeed, domain should + * be valid. + */ + test_cmd_pasid_attach(pasid, parent_hwpt_id); + ASSERT_EQ(0, + test_cmd_pasid_check_domain(self->fd, self->stdev_id, + pasid, parent_hwpt_id, + &result)); + EXPECT_EQ(1, result); + + /* + * Replace pasid 200 with self->ioas_id, should succeed, + * and have valid domain. + */ + test_cmd_pasid_replace(pasid, self->ioas_id); + ASSERT_EQ(0, + test_cmd_pasid_check_domain(self->fd, self->stdev_id, + pasid, self->hwpt_id, + &result)); + EXPECT_EQ(1, result); + + /* + * Replace a nested hwpt for pasid 200, should succeed, + * and have valid domain. + */ + test_cmd_pasid_replace(pasid, nested_hwpt_id[0]); + ASSERT_EQ(0, + test_cmd_pasid_check_domain(self->fd, self->stdev_id, + pasid, nested_hwpt_id[0], + &result)); + EXPECT_EQ(1, result); + + /* + * Replace with another nested hwpt for pasid 200, should + * succeed, and have valid domain. + */ + test_cmd_pasid_replace(pasid, nested_hwpt_id[1]); + ASSERT_EQ(0, + test_cmd_pasid_check_domain(self->fd, self->stdev_id, + pasid, nested_hwpt_id[1], + &result)); + EXPECT_EQ(1, result); + + /* + * Detach hwpt from pasid 200, and check if the pasid 200 + * has null domain. + */ + test_cmd_pasid_detach(pasid); + ASSERT_EQ(0, + test_cmd_pasid_check_domain(self->fd, self->stdev_id, + pasid, 0, &result)); + EXPECT_EQ(1, result); + + test_ioctl_destroy(nested_hwpt_id[0]); + test_ioctl_destroy(nested_hwpt_id[1]); + test_ioctl_destroy(parent_hwpt_id); + } +} + TEST_HARNESS_MAIN diff --git a/tools/testing/selftests/iommu/iommufd_fail_nth.c b/tools/testing/selftests/iommu/iommufd_fail_nth.c index d3f47f262c04..797f2b3103fc 100644 --- a/tools/testing/selftests/iommu/iommufd_fail_nth.c +++ b/tools/testing/selftests/iommu/iommufd_fail_nth.c @@ -206,12 +206,16 @@ FIXTURE(basic_fail_nth) { int fd; uint32_t access_id; + uint32_t stdev_id; + uint32_t pasid; }; FIXTURE_SETUP(basic_fail_nth) { self->fd = -1; self->access_id = 0; + self->stdev_id = 0; + self->pasid = 0; //test should use a non-zero value } FIXTURE_TEARDOWN(basic_fail_nth) @@ -223,6 +227,8 @@ FIXTURE_TEARDOWN(basic_fail_nth) rc = _test_cmd_destroy_access(self->access_id); assert(rc == 0); } + if (self->pasid && self->stdev_id) + _test_cmd_pasid_detach(self->fd, self->stdev_id, self->pasid); teardown_iommufd(self->fd, _metadata); } @@ -579,7 +585,6 @@ TEST_FAIL_NTH(basic_fail_nth, device) struct iommu_test_hw_info info; uint32_t ioas_id; uint32_t ioas_id2; - uint32_t stdev_id; uint32_t idev_id; uint32_t hwpt_id; __u64 iova; @@ -608,7 +613,7 @@ TEST_FAIL_NTH(basic_fail_nth, device) fail_nth_enable(); - if (_test_cmd_mock_domain(self->fd, ioas_id, &stdev_id, NULL, + if (_test_cmd_mock_domain(self->fd, ioas_id, &self->stdev_id, NULL, &idev_id)) return -1; @@ -619,11 +624,26 @@ TEST_FAIL_NTH(basic_fail_nth, device) IOMMU_HWPT_TYPE_DEFAULT, 0, 0)) return -1; - if (_test_cmd_mock_domain_replace(self->fd, stdev_id, ioas_id2, NULL)) + if (_test_cmd_mock_domain_replace(self->fd, self->stdev_id, ioas_id2, NULL)) + return -1; + + if (_test_cmd_mock_domain_replace(self->fd, self->stdev_id, hwpt_id, NULL)) return -1; - if (_test_cmd_mock_domain_replace(self->fd, stdev_id, hwpt_id, NULL)) + self->pasid = 200; + + /* Tests for pasid attach/replace/detach */ + if (_test_cmd_pasid_attach(self->fd, self->stdev_id, self->pasid, ioas_id)) return -1; + + if (_test_cmd_pasid_replace(self->fd, self->stdev_id, self->pasid, ioas_id2)) + return -1; + + if (_test_cmd_pasid_detach(self->fd, self->stdev_id, self->pasid)) + return -1; + + self->pasid = 0; + return 0; } diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index b75f168fca46..40d954a4cbc1 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -551,3 +551,81 @@ static int _test_cmd_unset_dev_data(int fd, __u32 device_id) #define test_err_unset_dev_data(_errno, device_id) \ EXPECT_ERRNO(_errno, \ _test_cmd_unset_dev_data(self->fd, device_id)) + +static int _test_cmd_pasid_attach(int fd, __u32 stdev_id, __u32 pasid, __u32 pt_id) +{ + struct iommu_test_cmd test_attach = { + .size = sizeof(test_attach), + .op = IOMMU_TEST_OP_PASID_ATTACH, + .id = stdev_id, + .pasid_attach = { + .pasid = pasid, + .pt_id = pt_id, + }, + }; + + return ioctl(fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_PASID_ATTACH), &test_attach); +} + +#define test_cmd_pasid_attach(pasid, hwpt_id) \ + ASSERT_EQ(0, _test_cmd_pasid_attach(self->fd, self->stdev_id, pasid, hwpt_id)) + +#define test_err_cmd_pasid_attach(_errno, pasid, hwpt_id) \ + EXPECT_ERRNO(_errno, \ + _test_cmd_pasid_attach(self->fd, self->stdev_id, pasid, hwpt_id)) + +static int _test_cmd_pasid_replace(int fd, __u32 stdev_id, __u32 pasid, __u32 pt_id) +{ + struct iommu_test_cmd test_replace = { + .size = sizeof(test_replace), + .op = IOMMU_TEST_OP_PASID_REPLACE, + .id = stdev_id, + .pasid_replace = { + .pasid = pasid, + .pt_id = pt_id, + }, + }; + + return ioctl(fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_PASID_REPLACE), &test_replace); +} + +#define test_cmd_pasid_replace(pasid, hwpt_id) \ + ASSERT_EQ(0, _test_cmd_pasid_replace(self->fd, self->stdev_id, pasid, hwpt_id)) + +#define test_err_cmd_pasid_replace(_errno, pasid, hwpt_id) \ + EXPECT_ERRNO(_errno, \ + _test_cmd_pasid_replace(self->fd, self->stdev_id, pasid, hwpt_id)) + +static int _test_cmd_pasid_detach(int fd, __u32 stdev_id, __u32 pasid) +{ + struct iommu_test_cmd test_detach = { + .size = sizeof(test_detach), + .op = IOMMU_TEST_OP_PASID_DETACH, + .id = stdev_id, + .pasid_detach = { + .pasid = pasid, + }, + }; + + return ioctl(fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_PASID_DETACH), &test_detach); +} + +#define test_cmd_pasid_detach(pasid) \ + ASSERT_EQ(0, _test_cmd_pasid_detach(self->fd, self->stdev_id, pasid)) + +static int test_cmd_pasid_check_domain(int fd, __u32 stdev_id, __u32 pasid, + __u32 hwpt_id, bool *result) +{ + struct iommu_test_cmd test_pasid_check = { + .size = sizeof(test_pasid_check), + .op = IOMMU_TEST_OP_PASID_CHECK_DOMAIN, + .id = stdev_id, + .pasid_check = { + .pasid = pasid, + .hwpt_id = hwpt_id, + .out_result_ptr = (__u64)result, + }, + }; + + return ioctl(fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_PASID_CHECK_DOMAIN), &test_pasid_check); +}