diff options
Diffstat (limited to 'include/linux/vfio_pci_core.h')
| -rw-r--r-- | include/linux/vfio_pci_core.h | 134 |
1 files changed, 117 insertions, 17 deletions
diff --git a/include/linux/vfio_pci_core.h b/include/linux/vfio_pci_core.h index 367fd79226a3..706877f998ff 100644 --- a/include/linux/vfio_pci_core.h +++ b/include/linux/vfio_pci_core.h @@ -12,6 +12,7 @@ #include <linux/pci.h> #include <linux/vfio.h> #include <linux/irqbypass.h> +#include <linux/rcupdate.h> #include <linux/types.h> #include <linux/uuid.h> #include <linux/notifier.h> @@ -26,6 +27,14 @@ struct vfio_pci_core_device; struct vfio_pci_region; +struct p2pdma_provider; +struct dma_buf_phys_vec; +struct dma_buf_attachment; + +struct vfio_pci_eventfd { + struct eventfd_ctx *ctx; + struct rcu_head rcu; +}; struct vfio_pci_regops { ssize_t (*rw)(struct vfio_pci_core_device *vdev, char __user *buf, @@ -49,9 +58,48 @@ struct vfio_pci_region { u32 flags; }; +struct vfio_pci_device_ops { + int (*get_dmabuf_phys)(struct vfio_pci_core_device *vdev, + struct p2pdma_provider **provider, + unsigned int region_index, + struct dma_buf_phys_vec *phys_vec, + struct vfio_region_dma_range *dma_ranges, + size_t nr_ranges); +}; + +#if IS_ENABLED(CONFIG_VFIO_PCI_DMABUF) +int vfio_pci_core_fill_phys_vec(struct dma_buf_phys_vec *phys_vec, + struct vfio_region_dma_range *dma_ranges, + size_t nr_ranges, phys_addr_t start, + phys_addr_t len); +int vfio_pci_core_get_dmabuf_phys(struct vfio_pci_core_device *vdev, + struct p2pdma_provider **provider, + unsigned int region_index, + struct dma_buf_phys_vec *phys_vec, + struct vfio_region_dma_range *dma_ranges, + size_t nr_ranges); +#else +static inline int +vfio_pci_core_fill_phys_vec(struct dma_buf_phys_vec *phys_vec, + struct vfio_region_dma_range *dma_ranges, + size_t nr_ranges, phys_addr_t start, + phys_addr_t len) +{ + return -EINVAL; +} +static inline int vfio_pci_core_get_dmabuf_phys( + struct vfio_pci_core_device *vdev, struct p2pdma_provider **provider, + unsigned int region_index, struct dma_buf_phys_vec *phys_vec, + struct vfio_region_dma_range *dma_ranges, size_t nr_ranges) +{ + return -EOPNOTSUPP; +} +#endif + struct vfio_pci_core_device { struct vfio_device vdev; struct pci_dev *pdev; + const struct vfio_pci_device_ops *pci_ops; void __iomem *barmap[PCI_STD_NUM_BARS]; bool bar_mmap_supported[PCI_STD_NUM_BARS]; u8 *pci_config_map; @@ -59,8 +107,7 @@ struct vfio_pci_core_device { struct perm_bits *msi_perm; spinlock_t irqlock; struct mutex igate; - struct vfio_pci_irq_ctx *ctx; - int num_ctx; + struct xarray ctx; int irq_type; int num_regions; struct vfio_pci_region *region; @@ -69,22 +116,23 @@ struct vfio_pci_core_device { u16 msix_size; u32 msix_offset; u32 rbar[7]; - bool pci_2_3; - bool virq_disabled; - bool reset_works; - bool extended_caps; - bool bardirty; - bool has_vga; - bool needs_reset; - bool nointx; - bool needs_pm_restore; - bool pm_intx_masked; - bool pm_runtime_engaged; + bool has_dyn_msix:1; + bool pci_2_3:1; + bool virq_disabled:1; + bool reset_works:1; + bool extended_caps:1; + bool bardirty:1; + bool has_vga:1; + bool needs_reset:1; + bool nointx:1; + bool needs_pm_restore:1; + bool pm_intx_masked:1; + bool pm_runtime_engaged:1; struct pci_saved_state *pci_saved_state; struct pci_saved_state *pm_save; int ioeventfds_nr; - struct eventfd_ctx *err_trigger; - struct eventfd_ctx *req_trigger; + struct vfio_pci_eventfd __rcu *err_trigger; + struct vfio_pci_eventfd __rcu *req_trigger; struct eventfd_ctx *pm_wake_eventfd_ctx; struct list_head dummy_resources_list; struct mutex ioeventfds_lock; @@ -93,9 +141,8 @@ struct vfio_pci_core_device { struct list_head sriov_pfs_item; struct vfio_pci_core_device *sriov_pf_core_dev; struct notifier_block nb; - struct mutex vma_lock; - struct list_head vma_list; struct rw_semaphore memory_lock; + struct list_head dmabufs; }; /* Will be exported for vfio pci drivers usage */ @@ -117,17 +164,70 @@ long vfio_pci_core_ioctl(struct vfio_device *core_vdev, unsigned int cmd, unsigned long arg); int vfio_pci_core_ioctl_feature(struct vfio_device *device, u32 flags, void __user *arg, size_t argsz); +int vfio_pci_ioctl_get_region_info(struct vfio_device *core_vdev, + struct vfio_region_info *info, + struct vfio_info_cap *caps); ssize_t vfio_pci_core_read(struct vfio_device *core_vdev, char __user *buf, size_t count, loff_t *ppos); ssize_t vfio_pci_core_write(struct vfio_device *core_vdev, const char __user *buf, size_t count, loff_t *ppos); +vm_fault_t vfio_pci_vmf_insert_pfn(struct vfio_pci_core_device *vdev, + struct vm_fault *vmf, unsigned long pfn, + unsigned int order); int vfio_pci_core_mmap(struct vfio_device *core_vdev, struct vm_area_struct *vma); void vfio_pci_core_request(struct vfio_device *core_vdev, unsigned int count); int vfio_pci_core_match(struct vfio_device *core_vdev, char *buf); +int vfio_pci_core_match_token_uuid(struct vfio_device *core_vdev, + const uuid_t *uuid); int vfio_pci_core_enable(struct vfio_pci_core_device *vdev); void vfio_pci_core_disable(struct vfio_pci_core_device *vdev); void vfio_pci_core_finish_enable(struct vfio_pci_core_device *vdev); +int vfio_pci_core_setup_barmap(struct vfio_pci_core_device *vdev, int bar); pci_ers_result_t vfio_pci_core_aer_err_detected(struct pci_dev *pdev, pci_channel_state_t state); +ssize_t vfio_pci_core_do_io_rw(struct vfio_pci_core_device *vdev, bool test_mem, + void __iomem *io, char __user *buf, + loff_t off, size_t count, size_t x_start, + size_t x_end, bool iswrite); +bool __vfio_pci_memory_enabled(struct vfio_pci_core_device *vdev); +bool vfio_pci_core_range_intersect_range(loff_t buf_start, size_t buf_cnt, + loff_t reg_start, size_t reg_cnt, + loff_t *buf_offset, + size_t *intersect_count, + size_t *register_offset); +#define VFIO_IOWRITE_DECLARATION(size) \ +int vfio_pci_core_iowrite##size(struct vfio_pci_core_device *vdev, \ + bool test_mem, u##size val, void __iomem *io); + +VFIO_IOWRITE_DECLARATION(8) +VFIO_IOWRITE_DECLARATION(16) +VFIO_IOWRITE_DECLARATION(32) +#ifdef iowrite64 +VFIO_IOWRITE_DECLARATION(64) +#endif + +#define VFIO_IOREAD_DECLARATION(size) \ +int vfio_pci_core_ioread##size(struct vfio_pci_core_device *vdev, \ + bool test_mem, u##size *val, void __iomem *io); + +VFIO_IOREAD_DECLARATION(8) +VFIO_IOREAD_DECLARATION(16) +VFIO_IOREAD_DECLARATION(32) +#ifdef ioread64 +VFIO_IOREAD_DECLARATION(64) +#endif + +static inline bool is_aligned_for_order(struct vm_area_struct *vma, + unsigned long addr, + unsigned long pfn, + unsigned int order) +{ + return !(order && (addr < vma->vm_start || + addr + (PAGE_SIZE << order) > vma->vm_end || + !IS_ALIGNED(pfn, 1 << order))); +} + +int vfio_pci_dma_buf_iommufd_map(struct dma_buf_attachment *attachment, + struct dma_buf_phys_vec *phys); #endif /* VFIO_PCI_CORE_H */ |