struct vfio_device {
struct device *dev;
const struct vfio_device_ops *ops;
+ /*
+ * mig_ops is a static property of the vfio_device which must be set
+ * prior to registering the vfio_device.
+ */
+ const struct vfio_migration_ops *mig_ops;
struct vfio_group *group;
struct vfio_device_set *dev_set;
struct list_head dev_set_list;
unsigned int open_count;
struct completion comp;
struct list_head group_next;
+ struct list_head iommu_entry;
};
/**
* @match: Optional device name match callback (return: 0 for no-match, >0 for
* match, -errno for abort (ex. match with insufficient or incorrect
* additional args)
+ * @dma_unmap: Called when userspace unmaps IOVA from the container
+ * this device is attached to.
* @device_feature: Optional, fill in the VFIO_DEVICE_FEATURE ioctl
- * @migration_set_state: Optional callback to change the migration state for
- * devices that support migration. It's mandatory for
- * VFIO_DEVICE_FEATURE_MIGRATION migration support.
- * The returned FD is used for data transfer according to the FSM
- * definition. The driver is responsible to ensure that FD reaches end
- * of stream or error whenever the migration FSM leaves a data transfer
- * state or before close_device() returns.
- * @migration_get_state: Optional callback to get the migration state for
- * devices that support migration. It's mandatory for
- * VFIO_DEVICE_FEATURE_MIGRATION migration support.
*/
struct vfio_device_ops {
char *name;
int (*mmap)(struct vfio_device *vdev, struct vm_area_struct *vma);
void (*request)(struct vfio_device *vdev, unsigned int count);
int (*match)(struct vfio_device *vdev, char *buf);
+ void (*dma_unmap)(struct vfio_device *vdev, u64 iova, u64 length);
int (*device_feature)(struct vfio_device *device, u32 flags,
void __user *arg, size_t argsz);
+};
+
+/**
+ * @migration_set_state: Optional callback to change the migration state for
+ * devices that support migration. It's mandatory for
+ * VFIO_DEVICE_FEATURE_MIGRATION migration support.
+ * The returned FD is used for data transfer according to the FSM
+ * definition. The driver is responsible to ensure that FD reaches end
+ * of stream or error whenever the migration FSM leaves a data transfer
+ * state or before close_device() returns.
+ * @migration_get_state: Optional callback to get the migration state for
+ * devices that support migration. It's mandatory for
+ * VFIO_DEVICE_FEATURE_MIGRATION migration support.
+ */
+struct vfio_migration_ops {
struct file *(*migration_set_state)(
struct vfio_device *device,
enum vfio_device_mig_state new_state);
/*
* External user API
*/
-extern struct iommu_group *vfio_file_iommu_group(struct file *file);
-extern bool vfio_file_enforced_coherent(struct file *file);
-extern void vfio_file_set_kvm(struct file *file, struct kvm *kvm);
-extern bool vfio_file_has_dev(struct file *file, struct vfio_device *device);
+struct iommu_group *vfio_file_iommu_group(struct file *file);
+bool vfio_file_enforced_coherent(struct file *file);
+void vfio_file_set_kvm(struct file *file, struct kvm *kvm);
+bool vfio_file_has_dev(struct file *file, struct vfio_device *device);
#define VFIO_PIN_PAGES_MAX_ENTRIES (PAGE_SIZE/sizeof(unsigned long))
-extern int vfio_pin_pages(struct vfio_device *device, unsigned long *user_pfn,
- int npage, int prot, unsigned long *phys_pfn);
-extern int vfio_unpin_pages(struct vfio_device *device, unsigned long *user_pfn,
- int npage);
-extern int vfio_dma_rw(struct vfio_device *device, dma_addr_t user_iova,
- void *data, size_t len, bool write);
-
-/* each type has independent events */
-enum vfio_notify_type {
- VFIO_IOMMU_NOTIFY = 0,
-};
-
-/* events for VFIO_IOMMU_NOTIFY */
-#define VFIO_IOMMU_NOTIFY_DMA_UNMAP BIT(0)
-
-extern int vfio_register_notifier(struct vfio_device *device,
- enum vfio_notify_type type,
- unsigned long *required_events,
- struct notifier_block *nb);
-extern int vfio_unregister_notifier(struct vfio_device *device,
- enum vfio_notify_type type,
- struct notifier_block *nb);
-
+int vfio_pin_pages(struct vfio_device *device, dma_addr_t iova,
+ int npage, int prot, struct page **pages);
+void vfio_unpin_pages(struct vfio_device *device, dma_addr_t iova, int npage);
+int vfio_dma_rw(struct vfio_device *device, dma_addr_t iova,
+ void *data, size_t len, bool write);
/*
* Sub-module helpers
struct vfio_info_cap_header *buf;
size_t size;
};
-extern struct vfio_info_cap_header *vfio_info_cap_add(
- struct vfio_info_cap *caps, size_t size, u16 id, u16 version);
-extern void vfio_info_cap_shift(struct vfio_info_cap *caps, size_t offset);
+struct vfio_info_cap_header *vfio_info_cap_add(struct vfio_info_cap *caps,
+ size_t size, u16 id,
+ u16 version);
+void vfio_info_cap_shift(struct vfio_info_cap *caps, size_t offset);
-extern int vfio_info_add_capability(struct vfio_info_cap *caps,
- struct vfio_info_cap_header *cap,
- size_t size);
+int vfio_info_add_capability(struct vfio_info_cap *caps,
+ struct vfio_info_cap_header *cap, size_t size);
-extern int vfio_set_irqs_validate_and_prepare(struct vfio_irq_set *hdr,
- int num_irqs, int max_irq_type,
- size_t *data_size);
+int vfio_set_irqs_validate_and_prepare(struct vfio_irq_set *hdr,
+ int num_irqs, int max_irq_type,
+ size_t *data_size);
struct pci_dev;
#if IS_ENABLED(CONFIG_VFIO_SPAPR_EEH)
-extern void vfio_spapr_pci_eeh_open(struct pci_dev *pdev);
-extern void vfio_spapr_pci_eeh_release(struct pci_dev *pdev);
-extern long vfio_spapr_iommu_eeh_ioctl(struct iommu_group *group,
- unsigned int cmd,
- unsigned long arg);
+void vfio_spapr_pci_eeh_open(struct pci_dev *pdev);
+void vfio_spapr_pci_eeh_release(struct pci_dev *pdev);
+long vfio_spapr_iommu_eeh_ioctl(struct iommu_group *group, unsigned int cmd,
+ unsigned long arg);
#else
static inline void vfio_spapr_pci_eeh_open(struct pci_dev *pdev)
{
struct virqfd **pvirqfd;
};
-extern int vfio_virqfd_enable(void *opaque,
- int (*handler)(void *, void *),
- void (*thread)(void *, void *),
- void *data, struct virqfd **pvirqfd, int fd);
-extern void vfio_virqfd_disable(struct virqfd **pvirqfd);
+int vfio_virqfd_enable(void *opaque, int (*handler)(void *, void *),
+ void (*thread)(void *, void *), void *data,
+ struct virqfd **pvirqfd, int fd);
+void vfio_virqfd_disable(struct virqfd **pvirqfd);
#endif /* VFIO_H */
projects / linux-2.6-microblaze.git / blobdiff