diff options
Diffstat (limited to 'drivers/vfio/vfio.h')
| -rw-r--r-- | drivers/vfio/vfio.h | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h index f8219a438bfb..7b19c621e0e6 100644 --- a/drivers/vfio/vfio.h +++ b/drivers/vfio/vfio.h @@ -10,16 +10,15 @@ #include <linux/device.h> #include <linux/cdev.h> #include <linux/module.h> +#include <linux/vfio.h> struct iommufd_ctx; struct iommu_group; -struct vfio_device; struct vfio_container; void vfio_device_put_registration(struct vfio_device *device); bool vfio_device_try_get_registration(struct vfio_device *device); -int vfio_device_open(struct vfio_device *device, - struct iommufd_ctx *iommufd, struct kvm *kvm); +int vfio_device_open(struct vfio_device *device, struct iommufd_ctx *iommufd); void vfio_device_close(struct vfio_device *device, struct iommufd_ctx *iommufd); @@ -74,6 +73,7 @@ struct vfio_group { struct file *opened_file; struct blocking_notifier_head notifier; struct iommufd_ctx *iommufd; + spinlock_t kvm_ref_lock; }; int vfio_device_set_group(struct vfio_device *device, @@ -88,12 +88,13 @@ bool vfio_device_has_container(struct vfio_device *device); int __init vfio_group_init(void); void vfio_group_cleanup(void); -#if IS_ENABLED(CONFIG_VFIO_CONTAINER) -/* events for the backend driver notify callback */ -enum vfio_iommu_notify_type { - VFIO_IOMMU_CONTAINER_CLOSE = 0, -}; +static inline bool vfio_device_is_noiommu(struct vfio_device *vdev) +{ + return IS_ENABLED(CONFIG_VFIO_NOIOMMU) && + vdev->group->type == VFIO_NO_IOMMU; +} +#if IS_ENABLED(CONFIG_VFIO_CONTAINER) /** * struct vfio_iommu_driver_ops - VFIO IOMMU driver callbacks */ @@ -124,8 +125,6 @@ struct vfio_iommu_driver_ops { void *data, size_t count, bool write); struct iommu_domain *(*group_iommu_domain)(void *iommu_data, struct iommu_group *group); - void (*notify)(void *iommu_data, - enum vfio_iommu_notify_type event); }; struct vfio_iommu_driver { @@ -251,4 +250,18 @@ extern bool vfio_noiommu __read_mostly; enum { vfio_noiommu = false }; #endif +#ifdef CONFIG_HAVE_KVM +void _vfio_device_get_kvm_safe(struct vfio_device *device, struct kvm *kvm); +void vfio_device_put_kvm(struct vfio_device *device); +#else +static inline void _vfio_device_get_kvm_safe(struct vfio_device *device, + struct kvm *kvm) +{ +} + +static inline void vfio_device_put_kvm(struct vfio_device *device) +{ +} +#endif + #endif |