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a="13067468" X-IronPort-AV: E=Sophos;i="6.04,196,1695711600"; d="scan'208";a="13067468" X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10953"; a="874065318" X-IronPort-AV: E=Sophos;i="6.04,196,1695711600"; d="scan'208";a="874065318" From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, peterx@redhat.com, jasowang@redhat.com, mst@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, kevin.tian@intel.com, yi.l.liu@intel.com, yi.y.sun@intel.com, chao.p.peng@intel.com, Zhenzhong Duan Subject: [PATCH rfcv1 03/23] backends/iommufd_device: introduce IOMMUFDDevice targeted interface Date: Mon, 15 Jan 2024 18:37:15 +0800 Message-Id: <20240115103735.132209-4-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240115103735.132209-1-zhenzhong.duan@intel.com> References: <20240115103735.132209-1-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=192.198.163.8; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -48 X-Spam_score: -4.9 X-Spam_bar: ---- X-Spam_report: (-4.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.758, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: 1705315217134100001 Content-Type: text/plain; charset="utf-8" With IOMMUFDDevice passed to vIOMMU, we can query hw IOMMU information and allocate hwpt for a device, but still need an extensible interface for vIOMMU usage. This introduces an IOMMUFDDevice targeted interface for vIOMMU. Currently this interface includes two callbacks attach_hwpt/detach_hwpt for vIOMMU to attach to or detach from hwpt on host side. Signed-off-by: Yi Liu Signed-off-by: Zhenzhong Duan --- include/sysemu/iommufd_device.h | 11 ++++++++++- backends/iommufd_device.c | 16 +++++++++++++++- hw/vfio/iommufd.c | 3 ++- 3 files changed, 27 insertions(+), 3 deletions(-) diff --git a/include/sysemu/iommufd_device.h b/include/sysemu/iommufd_devic= e.h index 795630324b..799c1345fd 100644 --- a/include/sysemu/iommufd_device.h +++ b/include/sysemu/iommufd_device.h @@ -17,15 +17,24 @@ =20 typedef struct IOMMUFDDevice IOMMUFDDevice; =20 +typedef struct IOMMUFDDeviceOps { + int (*attach_hwpt)(IOMMUFDDevice *idev, uint32_t hwpt_id); + int (*detach_hwpt)(IOMMUFDDevice *idev); +} IOMMUFDDeviceOps; + /* This is an abstraction of host IOMMUFD device */ struct IOMMUFDDevice { IOMMUFDBackend *iommufd; uint32_t dev_id; + IOMMUFDDeviceOps *ops; }; =20 +int iommufd_device_attach_hwpt(IOMMUFDDevice *idev, uint32_t hwpt_id); +int iommufd_device_detach_hwpt(IOMMUFDDevice *idev); int iommufd_device_get_info(IOMMUFDDevice *idev, enum iommu_hw_info_type *type, uint32_t len, void *data); void iommufd_device_init(void *_idev, size_t instance_size, - IOMMUFDBackend *iommufd, uint32_t dev_id); + IOMMUFDBackend *iommufd, uint32_t dev_id, + IOMMUFDDeviceOps *ops); #endif diff --git a/backends/iommufd_device.c b/backends/iommufd_device.c index f6e7ca1dbf..26f69252d2 100644 --- a/backends/iommufd_device.c +++ b/backends/iommufd_device.c @@ -14,6 +14,18 @@ #include "qemu/error-report.h" #include "sysemu/iommufd_device.h" =20 +int iommufd_device_attach_hwpt(IOMMUFDDevice *idev, uint32_t hwpt_id) +{ + g_assert(idev->ops->attach_hwpt); + return idev->ops->attach_hwpt(idev, hwpt_id); +} + +int iommufd_device_detach_hwpt(IOMMUFDDevice *idev) +{ + g_assert(idev->ops->detach_hwpt); + return idev->ops->detach_hwpt(idev); +} + int iommufd_device_get_info(IOMMUFDDevice *idev, enum iommu_hw_info_type *type, uint32_t len, void *data) @@ -39,7 +51,8 @@ int iommufd_device_get_info(IOMMUFDDevice *idev, } =20 void iommufd_device_init(void *_idev, size_t instance_size, - IOMMUFDBackend *iommufd, uint32_t dev_id) + IOMMUFDBackend *iommufd, uint32_t dev_id, + IOMMUFDDeviceOps *ops) { IOMMUFDDevice *idev =3D (IOMMUFDDevice *)_idev; =20 @@ -47,4 +60,5 @@ void iommufd_device_init(void *_idev, size_t instance_siz= e, =20 idev->iommufd =3D iommufd; idev->dev_id =3D dev_id; + idev->ops =3D ops; } diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c index cbd035f148..1b174b71ee 100644 --- a/hw/vfio/iommufd.c +++ b/hw/vfio/iommufd.c @@ -429,7 +429,8 @@ found_container: QLIST_INSERT_HEAD(&bcontainer->device_list, vbasedev, container_next); QLIST_INSERT_HEAD(&vfio_device_list, vbasedev, global_next); =20 - iommufd_device_init(idev, sizeof(*idev), container->be, vbasedev->devi= d); + iommufd_device_init(idev, sizeof(*idev), container->be, vbasedev->devi= d, + NULL); trace_iommufd_cdev_device_info(vbasedev->name, devfd, vbasedev->num_ir= qs, vbasedev->num_regions, vbasedev->flags); return 0; --=20 2.34.1