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228 lines
6.2 KiB
228 lines
6.2 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (C) 2012 Red Hat, Inc. All rights reserved. |
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* Author: Alex Williamson <[email protected]> |
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* |
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* Derived from original vfio: |
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* Copyright 2010 Cisco Systems, Inc. All rights reserved. |
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* Author: Tom Lyon, [email protected] |
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*/ |
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#include <linux/mutex.h> |
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#include <linux/pci.h> |
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#include <linux/irqbypass.h> |
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#include <linux/types.h> |
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#include <linux/uuid.h> |
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#include <linux/notifier.h> |
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#ifndef VFIO_PCI_PRIVATE_H |
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#define VFIO_PCI_PRIVATE_H |
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#define VFIO_PCI_OFFSET_SHIFT 40 |
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#define VFIO_PCI_OFFSET_TO_INDEX(off) (off >> VFIO_PCI_OFFSET_SHIFT) |
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#define VFIO_PCI_INDEX_TO_OFFSET(index) ((u64)(index) << VFIO_PCI_OFFSET_SHIFT) |
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#define VFIO_PCI_OFFSET_MASK (((u64)(1) << VFIO_PCI_OFFSET_SHIFT) - 1) |
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/* Special capability IDs predefined access */ |
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#define PCI_CAP_ID_INVALID 0xFF /* default raw access */ |
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#define PCI_CAP_ID_INVALID_VIRT 0xFE /* default virt access */ |
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/* Cap maximum number of ioeventfds per device (arbitrary) */ |
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#define VFIO_PCI_IOEVENTFD_MAX 1000 |
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struct vfio_pci_ioeventfd { |
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struct list_head next; |
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struct vfio_pci_device *vdev; |
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struct virqfd *virqfd; |
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void __iomem *addr; |
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uint64_t data; |
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loff_t pos; |
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int bar; |
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int count; |
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bool test_mem; |
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}; |
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struct vfio_pci_irq_ctx { |
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struct eventfd_ctx *trigger; |
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struct virqfd *unmask; |
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struct virqfd *mask; |
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char *name; |
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bool masked; |
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struct irq_bypass_producer producer; |
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}; |
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struct vfio_pci_device; |
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struct vfio_pci_region; |
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struct vfio_pci_regops { |
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size_t (*rw)(struct vfio_pci_device *vdev, char __user *buf, |
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size_t count, loff_t *ppos, bool iswrite); |
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void (*release)(struct vfio_pci_device *vdev, |
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struct vfio_pci_region *region); |
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int (*mmap)(struct vfio_pci_device *vdev, |
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struct vfio_pci_region *region, |
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struct vm_area_struct *vma); |
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int (*add_capability)(struct vfio_pci_device *vdev, |
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struct vfio_pci_region *region, |
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struct vfio_info_cap *caps); |
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}; |
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struct vfio_pci_region { |
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u32 type; |
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u32 subtype; |
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const struct vfio_pci_regops *ops; |
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void *data; |
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size_t size; |
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u32 flags; |
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}; |
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struct vfio_pci_dummy_resource { |
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struct resource resource; |
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int index; |
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struct list_head res_next; |
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}; |
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struct vfio_pci_reflck { |
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struct kref kref; |
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struct mutex lock; |
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}; |
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struct vfio_pci_vf_token { |
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struct mutex lock; |
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uuid_t uuid; |
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int users; |
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}; |
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struct vfio_pci_mmap_vma { |
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struct vm_area_struct *vma; |
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struct list_head vma_next; |
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}; |
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struct vfio_pci_device { |
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struct pci_dev *pdev; |
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void __iomem *barmap[PCI_STD_NUM_BARS]; |
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bool bar_mmap_supported[PCI_STD_NUM_BARS]; |
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u8 *pci_config_map; |
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u8 *vconfig; |
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struct perm_bits *msi_perm; |
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spinlock_t irqlock; |
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struct mutex igate; |
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struct vfio_pci_irq_ctx *ctx; |
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int num_ctx; |
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int irq_type; |
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int num_regions; |
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struct vfio_pci_region *region; |
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u8 msi_qmax; |
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u8 msix_bar; |
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u16 msix_size; |
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u32 msix_offset; |
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u32 rbar[7]; |
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bool pci_2_3; |
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bool virq_disabled; |
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bool reset_works; |
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bool extended_caps; |
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bool bardirty; |
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bool has_vga; |
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bool needs_reset; |
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bool nointx; |
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bool needs_pm_restore; |
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struct pci_saved_state *pci_saved_state; |
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struct pci_saved_state *pm_save; |
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struct vfio_pci_reflck *reflck; |
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int refcnt; |
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int ioeventfds_nr; |
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struct eventfd_ctx *err_trigger; |
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struct eventfd_ctx *req_trigger; |
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struct list_head dummy_resources_list; |
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struct mutex ioeventfds_lock; |
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struct list_head ioeventfds_list; |
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struct vfio_pci_vf_token *vf_token; |
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struct notifier_block nb; |
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struct mutex vma_lock; |
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struct list_head vma_list; |
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struct rw_semaphore memory_lock; |
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}; |
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#define is_intx(vdev) (vdev->irq_type == VFIO_PCI_INTX_IRQ_INDEX) |
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#define is_msi(vdev) (vdev->irq_type == VFIO_PCI_MSI_IRQ_INDEX) |
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#define is_msix(vdev) (vdev->irq_type == VFIO_PCI_MSIX_IRQ_INDEX) |
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#define is_irq_none(vdev) (!(is_intx(vdev) || is_msi(vdev) || is_msix(vdev))) |
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#define irq_is(vdev, type) (vdev->irq_type == type) |
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extern void vfio_pci_intx_mask(struct vfio_pci_device *vdev); |
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extern void vfio_pci_intx_unmask(struct vfio_pci_device *vdev); |
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extern int vfio_pci_set_irqs_ioctl(struct vfio_pci_device *vdev, |
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uint32_t flags, unsigned index, |
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unsigned start, unsigned count, void *data); |
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extern ssize_t vfio_pci_config_rw(struct vfio_pci_device *vdev, |
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char __user *buf, size_t count, |
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loff_t *ppos, bool iswrite); |
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extern ssize_t vfio_pci_bar_rw(struct vfio_pci_device *vdev, char __user *buf, |
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size_t count, loff_t *ppos, bool iswrite); |
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extern ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf, |
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size_t count, loff_t *ppos, bool iswrite); |
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extern long vfio_pci_ioeventfd(struct vfio_pci_device *vdev, loff_t offset, |
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uint64_t data, int count, int fd); |
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extern int vfio_pci_init_perm_bits(void); |
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extern void vfio_pci_uninit_perm_bits(void); |
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extern int vfio_config_init(struct vfio_pci_device *vdev); |
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extern void vfio_config_free(struct vfio_pci_device *vdev); |
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extern int vfio_pci_register_dev_region(struct vfio_pci_device *vdev, |
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unsigned int type, unsigned int subtype, |
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const struct vfio_pci_regops *ops, |
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size_t size, u32 flags, void *data); |
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extern int vfio_pci_set_power_state(struct vfio_pci_device *vdev, |
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pci_power_t state); |
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extern bool __vfio_pci_memory_enabled(struct vfio_pci_device *vdev); |
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extern void vfio_pci_zap_and_down_write_memory_lock(struct vfio_pci_device |
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*vdev); |
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extern u16 vfio_pci_memory_lock_and_enable(struct vfio_pci_device *vdev); |
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extern void vfio_pci_memory_unlock_and_restore(struct vfio_pci_device *vdev, |
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u16 cmd); |
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#ifdef CONFIG_VFIO_PCI_IGD |
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extern int vfio_pci_igd_init(struct vfio_pci_device *vdev); |
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#else |
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static inline int vfio_pci_igd_init(struct vfio_pci_device *vdev) |
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{ |
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return -ENODEV; |
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} |
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#endif |
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#ifdef CONFIG_VFIO_PCI_NVLINK2 |
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extern int vfio_pci_nvdia_v100_nvlink2_init(struct vfio_pci_device *vdev); |
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extern int vfio_pci_ibm_npu2_init(struct vfio_pci_device *vdev); |
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#else |
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static inline int vfio_pci_nvdia_v100_nvlink2_init(struct vfio_pci_device *vdev) |
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{ |
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return -ENODEV; |
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} |
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static inline int vfio_pci_ibm_npu2_init(struct vfio_pci_device *vdev) |
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{ |
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return -ENODEV; |
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} |
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#endif |
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#ifdef CONFIG_S390 |
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extern int vfio_pci_info_zdev_add_caps(struct vfio_pci_device *vdev, |
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struct vfio_info_cap *caps); |
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#else |
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static inline int vfio_pci_info_zdev_add_caps(struct vfio_pci_device *vdev, |
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struct vfio_info_cap *caps) |
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{ |
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return -ENODEV; |
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} |
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#endif |
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#endif /* VFIO_PCI_PRIVATE_H */
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