From: Yi Liu <yi.l.liu@intel.com> To: alex.williamson@redhat.com, cohuck@redhat.com, qemu-devel@nongnu.org Cc: david@gibson.dropbear.id.au, thuth@redhat.com, farman@linux.ibm.com, mjrosato@linux.ibm.com, akrowiak@linux.ibm.com, pasic@linux.ibm.com, jjherne@linux.ibm.com, jasowang@redhat.com, kvm@vger.kernel.org, jgg@nvidia.com, nicolinc@nvidia.com, eric.auger@redhat.com, eric.auger.pro@gmail.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, yi.y.sun@intel.com, peterx@redhat.com Subject: [RFC 12/18] vfio/container-obj: Introduce [attach/detach]_device container callbacks Date: Thu, 14 Apr 2022 03:47:04 -0700 [thread overview] Message-ID: <20220414104710.28534-13-yi.l.liu@intel.com> (raw) In-Reply-To: <20220414104710.28534-1-yi.l.liu@intel.com> From: Eric Auger <eric.auger@redhat.com> Let's turn attach/detach_device as container callbacks. That way, their implementation can be easily customized for a given backend. For the time being, only the legacy container is supported. Signed-off-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Yi Liu <yi.l.liu@intel.com> --- hw/vfio/as.c | 36 ++++++++++++++++++++++++++++ hw/vfio/container.c | 11 +++++---- hw/vfio/pci.c | 2 +- include/hw/vfio/vfio-common.h | 7 ++++++ include/hw/vfio/vfio-container-obj.h | 6 +++++ 5 files changed, 57 insertions(+), 5 deletions(-) diff --git a/hw/vfio/as.c b/hw/vfio/as.c index 37423d2c89..30e86f6833 100644 --- a/hw/vfio/as.c +++ b/hw/vfio/as.c @@ -874,3 +874,39 @@ void vfio_put_address_space(VFIOAddressSpace *space) g_free(space); } } + +static VFIOContainerClass * +vfio_get_container_class(VFIOIOMMUBackendType be) +{ + ObjectClass *klass; + + switch (be) { + case VFIO_IOMMU_BACKEND_TYPE_LEGACY: + klass = object_class_by_name(TYPE_VFIO_LEGACY_CONTAINER); + return VFIO_CONTAINER_OBJ_CLASS(klass); + default: + return NULL; + } +} + +int vfio_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp) +{ + VFIOContainerClass *vccs; + + vccs = vfio_get_container_class(VFIO_IOMMU_BACKEND_TYPE_LEGACY); + if (!vccs) { + return -ENOENT; + } + return vccs->attach_device(vbasedev, as, errp); +} + +void vfio_detach_device(VFIODevice *vbasedev) +{ + VFIOContainerClass *vccs; + + if (!vbasedev->container) { + return; + } + vccs = VFIO_CONTAINER_OBJ_GET_CLASS(vbasedev->container); + vccs->detach_device(vbasedev); +} diff --git a/hw/vfio/container.c b/hw/vfio/container.c index 5d73f8285e..74febc1567 100644 --- a/hw/vfio/container.c +++ b/hw/vfio/container.c @@ -50,8 +50,6 @@ static int vfio_kvm_device_fd = -1; #endif -#define TYPE_VFIO_LEGACY_CONTAINER "qemu:vfio-legacy-container" - VFIOGroupList vfio_group_list = QLIST_HEAD_INITIALIZER(vfio_group_list); @@ -1240,7 +1238,8 @@ static int vfio_device_groupid(VFIODevice *vbasedev, Error **errp) return groupid; } -int vfio_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp) +static int +legacy_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp) { int groupid = vfio_device_groupid(vbasedev, errp); VFIODevice *vbasedev_iter; @@ -1269,14 +1268,16 @@ int vfio_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp) vfio_put_group(group); return -1; } + vbasedev->container = &group->container->obj; return 0; } -void vfio_detach_device(VFIODevice *vbasedev) +static void legacy_detach_device(VFIODevice *vbasedev) { vfio_put_base_device(vbasedev); vfio_put_group(vbasedev->group); + vbasedev->container = NULL; } static void vfio_legacy_container_class_init(ObjectClass *klass, @@ -1292,6 +1293,8 @@ static void vfio_legacy_container_class_init(ObjectClass *klass, vccs->add_window = vfio_legacy_container_add_section_window; vccs->del_window = vfio_legacy_container_del_section_window; vccs->check_extension = vfio_legacy_container_check_extension; + vccs->attach_device = legacy_attach_device; + vccs->detach_device = legacy_detach_device; } static const TypeInfo vfio_legacy_container_info = { diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 0363f81017..e1ab6d339d 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -3063,7 +3063,7 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) } if (!pdev->failover_pair_id && - vfio_container_check_extension(&vbasedev->group->container->obj, + vfio_container_check_extension(vbasedev->container, VFIO_FEAT_LIVE_MIGRATION)) { ret = vfio_migration_probe(vbasedev, errp); if (ret) { diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 7d7898717e..2040c27cda 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -83,9 +83,15 @@ typedef struct VFIOLegacyContainer { typedef struct VFIODeviceOps VFIODeviceOps; +typedef enum VFIOIOMMUBackendType { + VFIO_IOMMU_BACKEND_TYPE_LEGACY = 0, + VFIO_IOMMU_BACKEND_TYPE_IOMMUFD = 1, +} VFIOIOMMUBackendType; + typedef struct VFIODevice { QLIST_ENTRY(VFIODevice) next; struct VFIOGroup *group; + VFIOContainer *container; char *sysfsdev; char *name; DeviceState *dev; @@ -97,6 +103,7 @@ typedef struct VFIODevice { bool ram_block_discard_allowed; bool enable_migration; VFIODeviceOps *ops; + VFIOIOMMUBackendType be; unsigned int num_irqs; unsigned int num_regions; unsigned int flags; diff --git a/include/hw/vfio/vfio-container-obj.h b/include/hw/vfio/vfio-container-obj.h index 7ffbbb299f..ebc1340530 100644 --- a/include/hw/vfio/vfio-container-obj.h +++ b/include/hw/vfio/vfio-container-obj.h @@ -42,6 +42,8 @@ OBJECT_GET_CLASS(VFIOContainerClass, (obj), \ TYPE_VFIO_CONTAINER_OBJ) +#define TYPE_VFIO_LEGACY_CONTAINER "qemu:vfio-legacy-container" + typedef enum VFIOContainerFeature { VFIO_FEAT_LIVE_MIGRATION, } VFIOContainerFeature; @@ -101,6 +103,8 @@ struct VFIOContainer { QLIST_ENTRY(VFIOContainer) next; }; +typedef struct VFIODevice VFIODevice; + typedef struct VFIOContainerClass { /* private */ ObjectClass parent_class; @@ -126,6 +130,8 @@ typedef struct VFIOContainerClass { Error **errp); void (*del_window)(VFIOContainer *container, MemoryRegionSection *section); + int (*attach_device)(VFIODevice *vbasedev, AddressSpace *as, Error **errp); + void (*detach_device)(VFIODevice *vbasedev); } VFIOContainerClass; bool vfio_container_check_extension(VFIOContainer *container, -- 2.27.0
WARNING: multiple messages have this Message-ID (diff)
From: Yi Liu <yi.l.liu@intel.com> To: alex.williamson@redhat.com, cohuck@redhat.com, qemu-devel@nongnu.org Cc: akrowiak@linux.ibm.com, jjherne@linux.ibm.com, thuth@redhat.com, yi.l.liu@intel.com, kvm@vger.kernel.org, mjrosato@linux.ibm.com, jasowang@redhat.com, farman@linux.ibm.com, peterx@redhat.com, pasic@linux.ibm.com, eric.auger@redhat.com, yi.y.sun@intel.com, chao.p.peng@intel.com, nicolinc@nvidia.com, kevin.tian@intel.com, jgg@nvidia.com, eric.auger.pro@gmail.com, david@gibson.dropbear.id.au Subject: [RFC 12/18] vfio/container-obj: Introduce [attach/detach]_device container callbacks Date: Thu, 14 Apr 2022 03:47:04 -0700 [thread overview] Message-ID: <20220414104710.28534-13-yi.l.liu@intel.com> (raw) In-Reply-To: <20220414104710.28534-1-yi.l.liu@intel.com> From: Eric Auger <eric.auger@redhat.com> Let's turn attach/detach_device as container callbacks. That way, their implementation can be easily customized for a given backend. For the time being, only the legacy container is supported. Signed-off-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Yi Liu <yi.l.liu@intel.com> --- hw/vfio/as.c | 36 ++++++++++++++++++++++++++++ hw/vfio/container.c | 11 +++++---- hw/vfio/pci.c | 2 +- include/hw/vfio/vfio-common.h | 7 ++++++ include/hw/vfio/vfio-container-obj.h | 6 +++++ 5 files changed, 57 insertions(+), 5 deletions(-) diff --git a/hw/vfio/as.c b/hw/vfio/as.c index 37423d2c89..30e86f6833 100644 --- a/hw/vfio/as.c +++ b/hw/vfio/as.c @@ -874,3 +874,39 @@ void vfio_put_address_space(VFIOAddressSpace *space) g_free(space); } } + +static VFIOContainerClass * +vfio_get_container_class(VFIOIOMMUBackendType be) +{ + ObjectClass *klass; + + switch (be) { + case VFIO_IOMMU_BACKEND_TYPE_LEGACY: + klass = object_class_by_name(TYPE_VFIO_LEGACY_CONTAINER); + return VFIO_CONTAINER_OBJ_CLASS(klass); + default: + return NULL; + } +} + +int vfio_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp) +{ + VFIOContainerClass *vccs; + + vccs = vfio_get_container_class(VFIO_IOMMU_BACKEND_TYPE_LEGACY); + if (!vccs) { + return -ENOENT; + } + return vccs->attach_device(vbasedev, as, errp); +} + +void vfio_detach_device(VFIODevice *vbasedev) +{ + VFIOContainerClass *vccs; + + if (!vbasedev->container) { + return; + } + vccs = VFIO_CONTAINER_OBJ_GET_CLASS(vbasedev->container); + vccs->detach_device(vbasedev); +} diff --git a/hw/vfio/container.c b/hw/vfio/container.c index 5d73f8285e..74febc1567 100644 --- a/hw/vfio/container.c +++ b/hw/vfio/container.c @@ -50,8 +50,6 @@ static int vfio_kvm_device_fd = -1; #endif -#define TYPE_VFIO_LEGACY_CONTAINER "qemu:vfio-legacy-container" - VFIOGroupList vfio_group_list = QLIST_HEAD_INITIALIZER(vfio_group_list); @@ -1240,7 +1238,8 @@ static int vfio_device_groupid(VFIODevice *vbasedev, Error **errp) return groupid; } -int vfio_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp) +static int +legacy_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp) { int groupid = vfio_device_groupid(vbasedev, errp); VFIODevice *vbasedev_iter; @@ -1269,14 +1268,16 @@ int vfio_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp) vfio_put_group(group); return -1; } + vbasedev->container = &group->container->obj; return 0; } -void vfio_detach_device(VFIODevice *vbasedev) +static void legacy_detach_device(VFIODevice *vbasedev) { vfio_put_base_device(vbasedev); vfio_put_group(vbasedev->group); + vbasedev->container = NULL; } static void vfio_legacy_container_class_init(ObjectClass *klass, @@ -1292,6 +1293,8 @@ static void vfio_legacy_container_class_init(ObjectClass *klass, vccs->add_window = vfio_legacy_container_add_section_window; vccs->del_window = vfio_legacy_container_del_section_window; vccs->check_extension = vfio_legacy_container_check_extension; + vccs->attach_device = legacy_attach_device; + vccs->detach_device = legacy_detach_device; } static const TypeInfo vfio_legacy_container_info = { diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 0363f81017..e1ab6d339d 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -3063,7 +3063,7 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) } if (!pdev->failover_pair_id && - vfio_container_check_extension(&vbasedev->group->container->obj, + vfio_container_check_extension(vbasedev->container, VFIO_FEAT_LIVE_MIGRATION)) { ret = vfio_migration_probe(vbasedev, errp); if (ret) { diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 7d7898717e..2040c27cda 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -83,9 +83,15 @@ typedef struct VFIOLegacyContainer { typedef struct VFIODeviceOps VFIODeviceOps; +typedef enum VFIOIOMMUBackendType { + VFIO_IOMMU_BACKEND_TYPE_LEGACY = 0, + VFIO_IOMMU_BACKEND_TYPE_IOMMUFD = 1, +} VFIOIOMMUBackendType; + typedef struct VFIODevice { QLIST_ENTRY(VFIODevice) next; struct VFIOGroup *group; + VFIOContainer *container; char *sysfsdev; char *name; DeviceState *dev; @@ -97,6 +103,7 @@ typedef struct VFIODevice { bool ram_block_discard_allowed; bool enable_migration; VFIODeviceOps *ops; + VFIOIOMMUBackendType be; unsigned int num_irqs; unsigned int num_regions; unsigned int flags; diff --git a/include/hw/vfio/vfio-container-obj.h b/include/hw/vfio/vfio-container-obj.h index 7ffbbb299f..ebc1340530 100644 --- a/include/hw/vfio/vfio-container-obj.h +++ b/include/hw/vfio/vfio-container-obj.h @@ -42,6 +42,8 @@ OBJECT_GET_CLASS(VFIOContainerClass, (obj), \ TYPE_VFIO_CONTAINER_OBJ) +#define TYPE_VFIO_LEGACY_CONTAINER "qemu:vfio-legacy-container" + typedef enum VFIOContainerFeature { VFIO_FEAT_LIVE_MIGRATION, } VFIOContainerFeature; @@ -101,6 +103,8 @@ struct VFIOContainer { QLIST_ENTRY(VFIOContainer) next; }; +typedef struct VFIODevice VFIODevice; + typedef struct VFIOContainerClass { /* private */ ObjectClass parent_class; @@ -126,6 +130,8 @@ typedef struct VFIOContainerClass { Error **errp); void (*del_window)(VFIOContainer *container, MemoryRegionSection *section); + int (*attach_device)(VFIODevice *vbasedev, AddressSpace *as, Error **errp); + void (*detach_device)(VFIODevice *vbasedev); } VFIOContainerClass; bool vfio_container_check_extension(VFIOContainer *container, -- 2.27.0
next prev parent reply other threads:[~2022-04-14 10:47 UTC|newest] Thread overview: 125+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-04-14 10:46 [RFC 00/18] vfio: Adopt iommufd Yi Liu 2022-04-14 10:46 ` Yi Liu 2022-04-14 10:46 ` [RFC 01/18] scripts/update-linux-headers: Add iommufd.h Yi Liu 2022-04-14 10:46 ` Yi Liu 2022-04-14 10:46 ` [RFC 02/18] linux-headers: Import latest vfio.h and iommufd.h Yi Liu 2022-04-14 10:46 ` Yi Liu 2022-04-14 10:46 ` [RFC 03/18] hw/vfio/pci: fix vfio_pci_hot_reset_result trace point Yi Liu 2022-04-14 10:46 ` Yi Liu 2022-04-14 10:46 ` [RFC 04/18] vfio/pci: Use vbasedev local variable in vfio_realize() Yi Liu 2022-04-14 10:46 ` Yi Liu 2022-04-14 10:46 ` [RFC 05/18] vfio/common: Rename VFIOGuestIOMMU::iommu into ::iommu_mr Yi Liu 2022-04-14 10:46 ` Yi Liu 2022-04-14 10:46 ` [RFC 06/18] vfio/common: Split common.c into common.c, container.c and as.c Yi Liu 2022-04-14 10:46 ` [RFC 07/18] vfio: Add base object for VFIOContainer Yi Liu 2022-04-14 10:46 ` Yi Liu 2022-04-29 6:29 ` David Gibson 2022-04-29 6:29 ` David Gibson 2022-05-03 13:05 ` Yi Liu 2022-04-14 10:47 ` [RFC 08/18] vfio/container: Introduce vfio_[attach/detach]_device Yi Liu 2022-04-14 10:47 ` Yi Liu 2022-04-14 10:47 ` [RFC 09/18] vfio/platform: Use vfio_[attach/detach]_device Yi Liu 2022-04-14 10:47 ` Yi Liu 2022-04-14 10:47 ` [RFC 10/18] vfio/ap: " Yi Liu 2022-04-14 10:47 ` Yi Liu 2022-04-14 10:47 ` [RFC 11/18] vfio/ccw: " Yi Liu 2022-04-14 10:47 ` Yi Liu 2022-04-14 10:47 ` Yi Liu [this message] 2022-04-14 10:47 ` [RFC 12/18] vfio/container-obj: Introduce [attach/detach]_device container callbacks Yi Liu 2022-04-14 10:47 ` [RFC 13/18] vfio/container-obj: Introduce VFIOContainer reset callback Yi Liu 2022-04-14 10:47 ` Yi Liu 2022-04-14 10:47 ` [RFC 14/18] hw/iommufd: Creation Yi Liu 2022-04-14 10:47 ` Yi Liu 2022-04-14 10:47 ` [RFC 15/18] vfio/iommufd: Implement iommufd backend Yi Liu 2022-04-14 10:47 ` Yi Liu 2022-04-22 14:58 ` Jason Gunthorpe 2022-04-22 21:33 ` Alex Williamson 2022-04-22 21:33 ` Alex Williamson 2022-04-26 9:55 ` Yi Liu 2022-04-26 9:55 ` Yi Liu 2022-04-26 10:41 ` Tian, Kevin 2022-04-26 10:41 ` Tian, Kevin 2022-04-26 13:41 ` Jason Gunthorpe 2022-04-26 14:08 ` Yi Liu 2022-04-26 14:08 ` Yi Liu 2022-04-26 14:11 ` Jason Gunthorpe 2022-04-26 18:45 ` Alex Williamson 2022-04-26 18:45 ` Alex Williamson 2022-04-26 19:27 ` Jason Gunthorpe 2022-04-26 20:59 ` Alex Williamson 2022-04-26 20:59 ` Alex Williamson 2022-04-26 23:08 ` Jason Gunthorpe 2022-04-26 13:53 ` Jason Gunthorpe 2022-04-14 10:47 ` [RFC 16/18] vfio/iommufd: Add IOAS_COPY_DMA support Yi Liu 2022-04-14 10:47 ` Yi Liu 2022-04-14 10:47 ` [RFC 17/18] vfio/as: Allow the selection of a given iommu backend Yi Liu 2022-04-14 10:47 ` Yi Liu 2022-04-14 10:47 ` [RFC 18/18] vfio/pci: Add an iommufd option Yi Liu 2022-04-14 10:47 ` Yi Liu 2022-04-15 8:37 ` [RFC 00/18] vfio: Adopt iommufd Nicolin Chen 2022-04-17 10:30 ` Eric Auger 2022-04-17 10:30 ` Eric Auger 2022-04-19 3:26 ` Nicolin Chen 2022-04-25 19:40 ` Eric Auger 2022-04-25 19:40 ` Eric Auger 2022-04-18 8:49 ` Tian, Kevin 2022-04-18 8:49 ` Tian, Kevin 2022-04-18 12:09 ` Yi Liu 2022-04-18 12:09 ` Yi Liu 2022-04-25 19:51 ` Eric Auger 2022-04-25 19:51 ` Eric Auger 2022-04-25 19:55 ` Eric Auger 2022-04-25 19:55 ` Eric Auger 2022-04-26 8:39 ` Tian, Kevin 2022-04-26 8:39 ` Tian, Kevin 2022-04-22 22:09 ` Alex Williamson 2022-04-22 22:09 ` Alex Williamson 2022-04-25 10:10 ` Daniel P. Berrangé 2022-04-25 10:10 ` Daniel P. Berrangé 2022-04-25 13:36 ` Jason Gunthorpe 2022-04-25 14:37 ` Alex Williamson 2022-04-25 14:37 ` Alex Williamson 2022-04-26 8:37 ` Tian, Kevin 2022-04-26 8:37 ` Tian, Kevin 2022-04-26 12:33 ` Jason Gunthorpe 2022-04-26 16:21 ` Alex Williamson 2022-04-26 16:21 ` Alex Williamson 2022-04-26 16:42 ` Jason Gunthorpe 2022-04-26 19:24 ` Alex Williamson 2022-04-26 19:24 ` Alex Williamson 2022-04-26 19:36 ` Jason Gunthorpe 2022-04-28 3:21 ` Tian, Kevin 2022-04-28 3:21 ` Tian, Kevin 2022-04-28 14:24 ` Alex Williamson 2022-04-28 14:24 ` Alex Williamson 2022-04-28 16:20 ` Daniel P. Berrangé 2022-04-28 16:20 ` Daniel P. Berrangé 2022-04-29 0:45 ` Tian, Kevin 2022-04-29 0:45 ` Tian, Kevin 2022-04-25 20:23 ` Eric Auger 2022-04-25 20:23 ` Eric Auger 2022-04-25 22:53 ` Alex Williamson 2022-04-25 22:53 ` Alex Williamson 2022-04-26 9:47 ` Shameerali Kolothum Thodi via 2022-04-26 9:47 ` Shameerali Kolothum Thodi 2022-04-26 11:44 ` Eric Auger 2022-04-26 11:44 ` Eric Auger 2022-04-26 12:43 ` Shameerali Kolothum Thodi 2022-04-26 12:43 ` Shameerali Kolothum Thodi via 2022-04-26 16:35 ` Alex Williamson 2022-04-26 16:35 ` Alex Williamson 2022-05-09 14:24 ` Zhangfei Gao 2022-05-10 3:17 ` Yi Liu 2022-05-10 6:51 ` Eric Auger 2022-05-10 12:35 ` Zhangfei Gao 2022-05-10 12:45 ` Jason Gunthorpe 2022-05-10 14:08 ` Yi Liu 2022-05-11 14:17 ` zhangfei.gao 2022-05-12 9:01 ` zhangfei.gao 2022-05-17 8:55 ` Yi Liu 2022-05-18 7:22 ` zhangfei.gao 2022-05-18 14:00 ` Yi Liu 2022-06-28 8:14 ` Shameerali Kolothum Thodi 2022-06-28 8:14 ` Shameerali Kolothum Thodi via 2022-06-28 8:58 ` Eric Auger 2022-05-17 8:52 ` Yi Liu
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