diff options
Diffstat (limited to 'drivers/vfio/pci/vfio_pci_private.h')
| -rw-r--r-- | drivers/vfio/pci/vfio_pci_private.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/vfio/pci/vfio_pci_private.h b/drivers/vfio/pci/vfio_pci_private.h index 0e7394f8f69b..8a7d546d18a0 100644 --- a/drivers/vfio/pci/vfio_pci_private.h +++ b/drivers/vfio/pci/vfio_pci_private.h @@ -14,6 +14,7 @@ #include <linux/mutex.h> #include <linux/pci.h> #include <linux/irqbypass.h> +#include <linux/types.h> #ifndef VFIO_PCI_PRIVATE_H #define VFIO_PCI_PRIVATE_H @@ -24,6 +25,10 @@ #define VFIO_PCI_INDEX_TO_OFFSET(index) ((u64)(index) << VFIO_PCI_OFFSET_SHIFT) #define VFIO_PCI_OFFSET_MASK (((u64)(1) << VFIO_PCI_OFFSET_SHIFT) - 1) +/* Special capability IDs predefined access */ +#define PCI_CAP_ID_INVALID 0xFF /* default raw access */ +#define PCI_CAP_ID_INVALID_VIRT 0xFE /* default virt access */ + struct vfio_pci_irq_ctx { struct eventfd_ctx *trigger; struct virqfd *unmask; @@ -33,6 +38,25 @@ struct vfio_pci_irq_ctx { struct irq_bypass_producer producer; }; +struct vfio_pci_device; +struct vfio_pci_region; + +struct vfio_pci_regops { + size_t (*rw)(struct vfio_pci_device *vdev, char __user *buf, + size_t count, loff_t *ppos, bool iswrite); + void (*release)(struct vfio_pci_device *vdev, + struct vfio_pci_region *region); +}; + +struct vfio_pci_region { + u32 type; + u32 subtype; + const struct vfio_pci_regops *ops; + void *data; + size_t size; + u32 flags; +}; + struct vfio_pci_device { struct pci_dev *pdev; void __iomem *barmap[PCI_STD_RESOURCE_END + 1]; @@ -45,6 +69,8 @@ struct vfio_pci_device { struct vfio_pci_irq_ctx *ctx; int num_ctx; int irq_type; + int num_regions; + struct vfio_pci_region *region; u8 msi_qmax; u8 msix_bar; u16 msix_size; @@ -91,4 +117,17 @@ extern void vfio_pci_uninit_perm_bits(void); extern int vfio_config_init(struct vfio_pci_device *vdev); extern void vfio_config_free(struct vfio_pci_device *vdev); + +extern int vfio_pci_register_dev_region(struct vfio_pci_device *vdev, + unsigned int type, unsigned int subtype, + const struct vfio_pci_regops *ops, + size_t size, u32 flags, void *data); +#ifdef CONFIG_VFIO_PCI_IGD +extern int vfio_pci_igd_init(struct vfio_pci_device *vdev); +#else +static inline int vfio_pci_igd_init(struct vfio_pci_device *vdev) +{ + return -ENODEV; +} +#endif #endif /* VFIO_PCI_PRIVATE_H */ |