diff options
Diffstat (limited to 'include/hw/vfio/vfio-device.h')
| -rw-r--r-- | include/hw/vfio/vfio-device.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/include/hw/vfio/vfio-device.h b/include/hw/vfio/vfio-device.h index 81c95bb..1901a35 100644 --- a/include/hw/vfio/vfio-device.h +++ b/include/hw/vfio/vfio-device.h @@ -28,6 +28,7 @@ #endif #include "system/system.h" #include "hw/vfio/vfio-container-base.h" +#include "hw/vfio/vfio-cpr.h" #include "system/host_iommu_device.h" #include "system/iommufd.h" @@ -41,10 +42,12 @@ enum { }; typedef struct VFIODeviceOps VFIODeviceOps; +typedef struct VFIODeviceIOOps VFIODeviceIOOps; typedef struct VFIOMigration VFIOMigration; typedef struct IOMMUFDBackend IOMMUFDBackend; typedef struct VFIOIOASHwpt VFIOIOASHwpt; +typedef struct VFIOUserProxy VFIOUserProxy; typedef struct VFIODevice { QLIST_ENTRY(VFIODevice) next; @@ -65,7 +68,9 @@ typedef struct VFIODevice { OnOffAuto enable_migration; OnOffAuto migration_multifd_transfer; bool migration_events; + bool use_region_fds; VFIODeviceOps *ops; + VFIODeviceIOOps *io_ops; unsigned int num_irqs; unsigned int num_regions; unsigned int flags; @@ -81,6 +86,10 @@ typedef struct VFIODevice { IOMMUFDBackend *iommufd; VFIOIOASHwpt *hwpt; QLIST_ENTRY(VFIODevice) hwpt_next; + struct vfio_region_info **reginfo; + int *region_fds; + VFIODeviceCPR cpr; + VFIOUserProxy *proxy; } VFIODevice; struct VFIODeviceOps { @@ -115,6 +124,20 @@ struct VFIODeviceOps { int (*vfio_load_config)(VFIODevice *vdev, QEMUFile *f); }; +/* + * Given a return value of either a short number of bytes read or -errno, + * construct a meaningful error message. + */ +#define strreaderror(ret) \ + (ret < 0 ? strerror(-ret) : "short read") + +/* + * Given a return value of either a short number of bytes written or -errno, + * construct a meaningful error message. + */ +#define strwriteerror(ret) \ + (ret < 0 ? strerror(-ret) : "short write") + void vfio_device_irq_disable(VFIODevice *vbasedev, int index); void vfio_device_irq_unmask(VFIODevice *vbasedev, int index); void vfio_device_irq_mask(VFIODevice *vbasedev, int index); @@ -127,6 +150,9 @@ bool vfio_device_hiod_create_and_realize(VFIODevice *vbasedev, const char *typename, Error **errp); bool vfio_device_attach(char *name, VFIODevice *vbasedev, AddressSpace *as, Error **errp); +bool vfio_device_attach_by_iommu_type(const char *iommu_type, char *name, + VFIODevice *vbasedev, AddressSpace *as, + Error **errp); void vfio_device_detach(VFIODevice *vbasedev); VFIODevice *vfio_get_vfio_device(Object *obj); @@ -134,17 +160,130 @@ typedef QLIST_HEAD(VFIODeviceList, VFIODevice) VFIODeviceList; extern VFIODeviceList vfio_device_list; #ifdef CONFIG_LINUX +/* + * How devices communicate with the server. The default option is through + * ioctl() to the kernel VFIO driver, but vfio-user can use a socket to a remote + * process. + */ +struct VFIODeviceIOOps { + /** + * @device_feature + * + * Fill in feature info for the given device. + * + * @vdev: #VFIODevice to use + * @feat: feature information to fill in + * + * Returns 0 on success or -errno. + */ + int (*device_feature)(VFIODevice *vdev, struct vfio_device_feature *feat); + + /** + * @get_region_info + * + * Get the information for a given region on the device. + * + * @vdev: #VFIODevice to use + * @info: set @info->index to the region index to look up; the rest of the + * struct will be filled in on success + * @fd: pointer to the fd for the region; will be -1 if not found + * + * Returns 0 on success or -errno. + */ + int (*get_region_info)(VFIODevice *vdev, + struct vfio_region_info *info, int *fd); + + /** + * @get_irq_info + * + * @vdev: #VFIODevice to use + * @irq: set @irq->index to the IRQ index to look up; the rest of the struct + * will be filled in on success + * + * Returns 0 on success or -errno. + */ + int (*get_irq_info)(VFIODevice *vdev, struct vfio_irq_info *irq); + + /** + * @set_irqs + * + * Configure IRQs. + * + * @vdev: #VFIODevice to use + * @irqs: IRQ configuration as defined by VFIO docs. + * + * Returns 0 on success or -errno. + */ + int (*set_irqs)(VFIODevice *vdev, struct vfio_irq_set *irqs); + + /** + * @region_read + * + * Read part of a region. + * + * @vdev: #VFIODevice to use + * @nr: region index + * @off: offset within the region + * @size: size in bytes to read + * @data: buffer to read into + * + * Returns number of bytes read on success or -errno. + */ + int (*region_read)(VFIODevice *vdev, uint8_t nr, off_t off, uint32_t size, + void *data); + + /** + * @region_write + * + * Write part of a region. + * + * @vdev: #VFIODevice to use + * @nr: region index + * @off: offset within the region + * @size: size in bytes to write + * @data: buffer to write from + * @post: true if this is a posted write + * + * Returns number of bytes write on success or -errno. + */ + int (*region_write)(VFIODevice *vdev, uint8_t nr, off_t off, uint32_t size, + void *data, bool post); +}; + +void vfio_device_prepare(VFIODevice *vbasedev, VFIOContainerBase *bcontainer, + struct vfio_device_info *info); + +void vfio_device_unprepare(VFIODevice *vbasedev); + int vfio_device_get_region_info(VFIODevice *vbasedev, int index, struct vfio_region_info **info); int vfio_device_get_region_info_type(VFIODevice *vbasedev, uint32_t type, uint32_t subtype, struct vfio_region_info **info); + +/** + * Return the fd for mapping this region. This is either the device's fd (for + * e.g. kernel vfio), or a per-region fd (for vfio-user). + * + * @vbasedev: #VFIODevice to use + * @index: region index + * + * Returns the fd. + */ +int vfio_device_get_region_fd(VFIODevice *vbasedev, int index); + bool vfio_device_has_region_cap(VFIODevice *vbasedev, int region, uint16_t cap_type); + +int vfio_device_get_irq_info(VFIODevice *vbasedev, int index, + struct vfio_irq_info *info); #endif /* Returns 0 on success, or a negative errno. */ bool vfio_device_get_name(VFIODevice *vbasedev, Error **errp); +void vfio_device_free_name(VFIODevice *vbasedev); void vfio_device_set_fd(VFIODevice *vbasedev, const char *str, Error **errp); void vfio_device_init(VFIODevice *vbasedev, int type, VFIODeviceOps *ops, DeviceState *dev, bool ram_discard); int vfio_device_get_aw_bits(VFIODevice *vdev); + +void vfio_kvm_device_close(void); #endif /* HW_VFIO_VFIO_COMMON_H */ |