diff options
Diffstat (limited to 'drivers/virtio/virtio_pci_common.h')
| -rw-r--r-- | drivers/virtio/virtio_pci_common.h | 43 |
1 files changed, 37 insertions, 6 deletions
diff --git a/drivers/virtio/virtio_pci_common.h b/drivers/virtio/virtio_pci_common.h index 5a497289b7e9..28ee4e56badf 100644 --- a/drivers/virtio/virtio_pci_common.h +++ b/drivers/virtio/virtio_pci_common.h @@ -53,12 +53,32 @@ struct virtio_pci_device { struct virtio_device vdev; struct pci_dev *pci_dev; + /* In legacy mode, these two point to within ->legacy. */ + /* Where to read and clear interrupt */ + u8 __iomem *isr; + + /* Modern only fields */ + /* The IO mapping for the PCI config space (non-legacy mode) */ + struct virtio_pci_common_cfg __iomem *common; + /* Device-specific data (non-legacy mode) */ + void __iomem *device; + /* Base of vq notifications (non-legacy mode). */ + void __iomem *notify_base; + + /* So we can sanity-check accesses. */ + size_t notify_len; + size_t device_len; + + /* Capability for when we need to map notifications per-vq. */ + int notify_map_cap; + + /* Multiply queue_notify_off by this value. (non-legacy mode). */ + u32 notify_offset_multiplier; + + /* Legacy only field */ /* the IO mapping for the PCI config space */ void __iomem *ioaddr; - /* the IO mapping for ISR operation */ - void __iomem *isr; - /* a list of queues so we can dispatch IRQs */ spinlock_t lock; struct list_head virtqueues; @@ -127,8 +147,19 @@ const char *vp_bus_name(struct virtio_device *vdev); */ int vp_set_vq_affinity(struct virtqueue *vq, int cpu); -int virtio_pci_legacy_probe(struct pci_dev *pci_dev, - const struct pci_device_id *id); -void virtio_pci_legacy_remove(struct pci_dev *pci_dev); +#if IS_ENABLED(CONFIG_VIRTIO_PCI_LEGACY) +int virtio_pci_legacy_probe(struct virtio_pci_device *); +void virtio_pci_legacy_remove(struct virtio_pci_device *); +#else +static inline int virtio_pci_legacy_probe(struct virtio_pci_device *vp_dev) +{ + return -ENODEV; +} +static inline void virtio_pci_legacy_remove(struct virtio_pci_device *vp_dev) +{ +} +#endif +int virtio_pci_modern_probe(struct virtio_pci_device *); +void virtio_pci_modern_remove(struct virtio_pci_device *); #endif |