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a="29996430" X-IronPort-AV: E=Sophos;i="6.09,217,1716274800"; d="scan'208";a="29996430" X-CSE-ConnectionGUID: m90X9qSMTCGkhDvmJxNxVA== X-CSE-MsgGUID: 98aWQuVbRZOM9R2AyuKvGQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,217,1716274800"; d="scan'208";a="81717620" From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, peterx@redhat.com, jasowang@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, Zhenzhong Duan , Marcel Apfelbaum , Thomas Huth , Laurent Vivier , Paolo Bonzini Subject: [PATCH v1 17/17] tests/qtest: Add intel-iommu test Date: Thu, 18 Jul 2024 16:16:36 +0800 Message-Id: <20240718081636.879544-18-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240718081636.879544-1-zhenzhong.duan@intel.com> References: <20240718081636.879544-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=198.175.65.13; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1721290929434116600 Content-Type: text/plain; charset="utf-8" Add the framework to test the intel-iommu device. Currently only tested cap/ecap bits correctness in scalable modern mode. Also tested cap/ecap bits consistency before and after system reset. Signed-off-by: Zhenzhong Duan Reviewed-by: Cl=C3=A9ment Mathieu--Drif --- MAINTAINERS | 1 + include/hw/i386/intel_iommu.h | 1 + tests/qtest/intel-iommu-test.c | 71 ++++++++++++++++++++++++++++++++++ tests/qtest/meson.build | 1 + 4 files changed, 74 insertions(+) create mode 100644 tests/qtest/intel-iommu-test.c diff --git a/MAINTAINERS b/MAINTAINERS index 7d9811458c..ec765bf3d3 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3662,6 +3662,7 @@ S: Supported F: hw/i386/intel_iommu.c F: hw/i386/intel_iommu_internal.h F: include/hw/i386/intel_iommu.h +F: tests/qtest/intel-iommu-test.c =20 AMD-Vi Emulation S: Orphan diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h index 650641544c..b1848dbec6 100644 --- a/include/hw/i386/intel_iommu.h +++ b/include/hw/i386/intel_iommu.h @@ -47,6 +47,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(IntelIOMMUState, INTEL_IOMMU_D= EVICE) #define VTD_HOST_AW_48BIT 48 #define VTD_HOST_AW_AUTO 0xff #define VTD_HAW_MASK(aw) ((1ULL << (aw)) - 1) +#define VTD_MGAW_FROM_CAP(cap) ((cap >> 16) & 0x3fULL) =20 #define DMAR_REPORT_F_INTR (1) =20 diff --git a/tests/qtest/intel-iommu-test.c b/tests/qtest/intel-iommu-test.c new file mode 100644 index 0000000000..8e07034f6f --- /dev/null +++ b/tests/qtest/intel-iommu-test.c @@ -0,0 +1,71 @@ +/* + * QTest testcase for intel-iommu + * + * Copyright (c) 2024 Intel, Inc. + * + * Author: Zhenzhong Duan + * + * This work is licensed under the terms of the GNU GPL, version 2 or late= r. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "libqtest.h" +#include "hw/i386/intel_iommu_internal.h" + +#define CAP_MODERN_FIXED1 (VTD_CAP_FRO | VTD_CAP_NFR | VTD_CAP_ND | \ + VTD_CAP_MAMV | VTD_CAP_PSI | VTD_CAP_SLLPS) +#define ECAP_MODERN_FIXED1 (VTD_ECAP_QI | VTD_ECAP_IRO | VTD_ECAP_MHMV = | \ + VTD_ECAP_SMTS | VTD_ECAP_FLTS) + +static inline uint32_t vtd_reg_readl(QTestState *s, uint64_t offset) +{ + return qtest_readl(s, Q35_HOST_BRIDGE_IOMMU_ADDR + offset); +} + +static inline uint64_t vtd_reg_readq(QTestState *s, uint64_t offset) +{ + return qtest_readq(s, Q35_HOST_BRIDGE_IOMMU_ADDR + offset); +} + +static void test_intel_iommu_modern(void) +{ + uint8_t init_csr[DMAR_REG_SIZE]; /* register values */ + uint8_t post_reset_csr[DMAR_REG_SIZE]; /* register values */ + uint64_t cap, ecap, tmp; + QTestState *s; + + s =3D qtest_init("-M q35 -device intel-iommu,x-scalable-mode=3Dmodern"= ); + + cap =3D vtd_reg_readq(s, DMAR_CAP_REG); + g_assert((cap & CAP_MODERN_FIXED1) =3D=3D CAP_MODERN_FIXED1); + + tmp =3D cap & VTD_CAP_SAGAW_MASK; + g_assert(tmp =3D=3D (VTD_CAP_SAGAW_39bit | VTD_CAP_SAGAW_48bit)); + + tmp =3D VTD_MGAW_FROM_CAP(cap); + g_assert(tmp =3D=3D VTD_HOST_AW_48BIT - 1); + + ecap =3D vtd_reg_readq(s, DMAR_ECAP_REG); + g_assert((ecap & ECAP_MODERN_FIXED1) =3D=3D ECAP_MODERN_FIXED1); + g_assert(ecap & VTD_ECAP_IR); + + qtest_memread(s, Q35_HOST_BRIDGE_IOMMU_ADDR, init_csr, DMAR_REG_SIZE); + + qobject_unref(qtest_qmp(s, "{ 'execute': 'system_reset' }")); + qtest_qmp_eventwait(s, "RESET"); + + qtest_memread(s, Q35_HOST_BRIDGE_IOMMU_ADDR, post_reset_csr, DMAR_REG_= SIZE); + /* Ensure registers are consistent after hard reset */ + g_assert(!memcmp(init_csr, post_reset_csr, DMAR_REG_SIZE)); + + qtest_quit(s); +} + +int main(int argc, char **argv) +{ + g_test_init(&argc, &argv, NULL); + qtest_add_func("/q35/intel-iommu/modern", test_intel_iommu_modern); + + return g_test_run(); +} diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build index 6508bfb1a2..20d05d471b 100644 --- a/tests/qtest/meson.build +++ b/tests/qtest/meson.build @@ -79,6 +79,7 @@ qtests_i386 =3D \ (config_all_devices.has_key('CONFIG_SB16') ? ['fuzz-sb16-test'] : []) + = \ (config_all_devices.has_key('CONFIG_SDHCI_PCI') ? ['fuzz-sdcard-test'] := []) + \ (config_all_devices.has_key('CONFIG_ESP_PCI') ? ['am53c974-test'] : []) = + \ + (config_all_devices.has_key('CONFIG_VTD') ? ['intel-iommu-test'] : []) += \ (host_os !=3D 'windows' and = \ config_all_devices.has_key('CONFIG_ACPI_ERST') ? ['erst-test'] : []) + = \ (config_all_devices.has_key('CONFIG_PCIE_PORT') and = \ --=20 2.34.1