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1/* SPDX-License-Identifier: GPL-2.0-only */2#ifndef VFIO_PCI_PRIV_H3#define VFIO_PCI_PRIV_H4 5#include <linux/vfio_pci_core.h>6 7/* Special capability IDs predefined access */8#define PCI_CAP_ID_INVALID 0xFF /* default raw access */9#define PCI_CAP_ID_INVALID_VIRT 0xFE /* default virt access */10 11/* Cap maximum number of ioeventfds per device (arbitrary) */12#define VFIO_PCI_IOEVENTFD_MAX 100013 14struct vfio_pci_ioeventfd {15 struct list_head next;16 struct vfio_pci_core_device *vdev;17 struct virqfd *virqfd;18 void __iomem *addr;19 uint64_t data;20 loff_t pos;21 int bar;22 int count;23 bool test_mem;24};25 26bool vfio_pci_intx_mask(struct vfio_pci_core_device *vdev);27void vfio_pci_intx_unmask(struct vfio_pci_core_device *vdev);28 29int vfio_pci_set_irqs_ioctl(struct vfio_pci_core_device *vdev, uint32_t flags,30 unsigned index, unsigned start, unsigned count,31 void *data);32 33ssize_t vfio_pci_config_rw(struct vfio_pci_core_device *vdev, char __user *buf,34 size_t count, loff_t *ppos, bool iswrite);35 36ssize_t vfio_pci_bar_rw(struct vfio_pci_core_device *vdev, char __user *buf,37 size_t count, loff_t *ppos, bool iswrite);38 39#ifdef CONFIG_VFIO_PCI_VGA40ssize_t vfio_pci_vga_rw(struct vfio_pci_core_device *vdev, char __user *buf,41 size_t count, loff_t *ppos, bool iswrite);42#else43static inline ssize_t vfio_pci_vga_rw(struct vfio_pci_core_device *vdev,44 char __user *buf, size_t count,45 loff_t *ppos, bool iswrite)46{47 return -EINVAL;48}49#endif50 51int vfio_pci_ioeventfd(struct vfio_pci_core_device *vdev, loff_t offset,52 uint64_t data, int count, int fd);53 54int vfio_pci_init_perm_bits(void);55void vfio_pci_uninit_perm_bits(void);56 57int vfio_config_init(struct vfio_pci_core_device *vdev);58void vfio_config_free(struct vfio_pci_core_device *vdev);59 60int vfio_pci_set_power_state(struct vfio_pci_core_device *vdev,61 pci_power_t state);62 63bool __vfio_pci_memory_enabled(struct vfio_pci_core_device *vdev);64void vfio_pci_zap_and_down_write_memory_lock(struct vfio_pci_core_device *vdev);65u16 vfio_pci_memory_lock_and_enable(struct vfio_pci_core_device *vdev);66void vfio_pci_memory_unlock_and_restore(struct vfio_pci_core_device *vdev,67 u16 cmd);68 69#ifdef CONFIG_VFIO_PCI_IGD70int vfio_pci_igd_init(struct vfio_pci_core_device *vdev);71#else72static inline int vfio_pci_igd_init(struct vfio_pci_core_device *vdev)73{74 return -ENODEV;75}76#endif77 78#ifdef CONFIG_VFIO_PCI_ZDEV_KVM79int vfio_pci_info_zdev_add_caps(struct vfio_pci_core_device *vdev,80 struct vfio_info_cap *caps);81int vfio_pci_zdev_open_device(struct vfio_pci_core_device *vdev);82void vfio_pci_zdev_close_device(struct vfio_pci_core_device *vdev);83#else84static inline int vfio_pci_info_zdev_add_caps(struct vfio_pci_core_device *vdev,85 struct vfio_info_cap *caps)86{87 return -ENODEV;88}89 90static inline int vfio_pci_zdev_open_device(struct vfio_pci_core_device *vdev)91{92 return 0;93}94 95static inline void vfio_pci_zdev_close_device(struct vfio_pci_core_device *vdev)96{}97#endif98 99static inline bool vfio_pci_is_vga(struct pci_dev *pdev)100{101 return (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;102}103 104#endif105