105 lines
3.0 KiB
C
105 lines
3.0 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef VFIO_PCI_PRIV_H
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#define VFIO_PCI_PRIV_H
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#include <linux/vfio_pci_core.h>
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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_core_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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bool vfio_pci_intx_mask(struct vfio_pci_core_device *vdev);
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void vfio_pci_intx_unmask(struct vfio_pci_core_device *vdev);
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int vfio_pci_set_irqs_ioctl(struct vfio_pci_core_device *vdev, uint32_t flags,
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unsigned index, unsigned start, unsigned count,
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void *data);
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ssize_t vfio_pci_config_rw(struct vfio_pci_core_device *vdev, char __user *buf,
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size_t count, loff_t *ppos, bool iswrite);
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ssize_t vfio_pci_bar_rw(struct vfio_pci_core_device *vdev, char __user *buf,
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size_t count, loff_t *ppos, bool iswrite);
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#ifdef CONFIG_VFIO_PCI_VGA
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ssize_t vfio_pci_vga_rw(struct vfio_pci_core_device *vdev, char __user *buf,
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size_t count, loff_t *ppos, bool iswrite);
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#else
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static inline ssize_t vfio_pci_vga_rw(struct vfio_pci_core_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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{
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return -EINVAL;
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}
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#endif
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int vfio_pci_ioeventfd(struct vfio_pci_core_device *vdev, loff_t offset,
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uint64_t data, int count, int fd);
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int vfio_pci_init_perm_bits(void);
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void vfio_pci_uninit_perm_bits(void);
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int vfio_config_init(struct vfio_pci_core_device *vdev);
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void vfio_config_free(struct vfio_pci_core_device *vdev);
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int vfio_pci_set_power_state(struct vfio_pci_core_device *vdev,
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pci_power_t state);
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bool __vfio_pci_memory_enabled(struct vfio_pci_core_device *vdev);
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void vfio_pci_zap_and_down_write_memory_lock(struct vfio_pci_core_device *vdev);
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u16 vfio_pci_memory_lock_and_enable(struct vfio_pci_core_device *vdev);
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void vfio_pci_memory_unlock_and_restore(struct vfio_pci_core_device *vdev,
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u16 cmd);
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#ifdef CONFIG_VFIO_PCI_IGD
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int vfio_pci_igd_init(struct vfio_pci_core_device *vdev);
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#else
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static inline int vfio_pci_igd_init(struct vfio_pci_core_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_ZDEV_KVM
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int vfio_pci_info_zdev_add_caps(struct vfio_pci_core_device *vdev,
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struct vfio_info_cap *caps);
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int vfio_pci_zdev_open_device(struct vfio_pci_core_device *vdev);
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void vfio_pci_zdev_close_device(struct vfio_pci_core_device *vdev);
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#else
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static inline int vfio_pci_info_zdev_add_caps(struct vfio_pci_core_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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static inline int vfio_pci_zdev_open_device(struct vfio_pci_core_device *vdev)
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{
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return 0;
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}
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static inline void vfio_pci_zdev_close_device(struct vfio_pci_core_device *vdev)
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{}
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#endif
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static inline bool vfio_pci_is_vga(struct pci_dev *pdev)
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{
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return (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;
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}
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#endif
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