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a="49894911" X-IronPort-AV: E=Sophos;i="6.15,303,1739865600"; d="scan'208";a="49894911" X-CSE-ConnectionGUID: R1LLdrsPTsuQpHp56j7Emg== X-CSE-MsgGUID: AatEFAggSbCAVsXwZOYfuw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,303,1739865600"; d="scan'208";a="145158321" From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, jasowang@redhat.com, peterx@redhat.com, ddutile@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, shameerali.kolothum.thodi@huawei.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 Subject: [PATCH rfcv3 05/21] vfio/iommufd: Save vendor specific device info Date: Wed, 21 May 2025 19:14:35 +0800 Message-Id: <20250521111452.3316354-6-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250521111452.3316354-1-zhenzhong.duan@intel.com> References: <20250521111452.3316354-1-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=192.198.163.14; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -45 X-Spam_score: -4.6 X-Spam_bar: ---- X-Spam_report: (-4.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.184, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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: 1747826524518116600 Content-Type: text/plain; charset="utf-8" Some device information returned by ioctl(IOMMU_GET_HW_INFO) are vendor specific. Save them all in a new defined structure mirroring that vendor IOMMU's structure, then get_cap() can query those information for capability. We can't use the vendor IOMMU's structure directly because they are in linux/iommufd.h which breaks build on windows. Suggested-by: Eric Auger Suggested-by: Nicolin Chen Signed-off-by: Zhenzhong Duan --- include/system/host_iommu_device.h | 12 ++++++++++++ hw/vfio/iommufd.c | 12 ++++++++++++ 2 files changed, 24 insertions(+) diff --git a/include/system/host_iommu_device.h b/include/system/host_iommu= _device.h index 809cced4ba..908bfe32c7 100644 --- a/include/system/host_iommu_device.h +++ b/include/system/host_iommu_device.h @@ -15,6 +15,17 @@ #include "qom/object.h" #include "qapi/error.h" =20 +/* This is mirror of struct iommu_hw_info_vtd */ +typedef struct Vtd_Caps { + uint32_t flags; + uint64_t cap_reg; + uint64_t ecap_reg; +} Vtd_Caps; + +typedef union VendorCaps { + Vtd_Caps vtd; +} VendorCaps; + /** * struct HostIOMMUDeviceCaps - Define host IOMMU device capabilities. * @@ -26,6 +37,7 @@ typedef struct HostIOMMUDeviceCaps { uint32_t type; uint64_t hw_caps; + VendorCaps vendor_caps; } HostIOMMUDeviceCaps; =20 #define TYPE_HOST_IOMMU_DEVICE "host-iommu-device" diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c index d661737c17..5c740222e5 100644 --- a/hw/vfio/iommufd.c +++ b/hw/vfio/iommufd.c @@ -834,6 +834,7 @@ static bool hiod_iommufd_vfio_realize(HostIOMMUDevice *= hiod, void *opaque, VFIODevice *vdev =3D opaque; HostIOMMUDeviceIOMMUFD *idev; HostIOMMUDeviceCaps *caps =3D &hiod->caps; + VendorCaps *vendor_caps =3D &caps->vendor_caps; enum iommu_hw_info_type type; union { struct iommu_hw_info_vtd vtd; @@ -852,6 +853,17 @@ static bool hiod_iommufd_vfio_realize(HostIOMMUDevice = *hiod, void *opaque, caps->type =3D type; caps->hw_caps =3D hw_caps; =20 + switch (type) { + case IOMMU_HW_INFO_TYPE_INTEL_VTD: + vendor_caps->vtd.flags =3D data.vtd.flags; + vendor_caps->vtd.cap_reg =3D data.vtd.cap_reg; + vendor_caps->vtd.ecap_reg =3D data.vtd.ecap_reg; + break; + case IOMMU_HW_INFO_TYPE_ARM_SMMUV3: + case IOMMU_HW_INFO_TYPE_NONE: + break; + } + idev =3D HOST_IOMMU_DEVICE_IOMMUFD(hiod); idev->iommufd =3D vdev->iommufd; idev->devid =3D vdev->devid; --=20 2.34.1