projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 89e1f7d4 AW |
1 | /* |
| 2 | * Copyright (C) 2012 Red Hat, Inc. All rights reserved. | |
| 3 | * Author: Alex Williamson <alex.williamson@redhat.com> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License version 2 as | |
| 7 | * published by the Free Software Foundation. | |
| 8 | * | |
| 9 | * Derived from original vfio: | |
| 10 | * Copyright 2010 Cisco Systems, Inc. All rights reserved. | |
| 11 | * Author: Tom Lyon, pugs@cisco.com | |
| 12 | */ | |
| 13 | ||
| 14 | #include <linux/mutex.h> | |
| 15 | #include <linux/pci.h> | |
| 6d7425f1 | 16 | #include <linux/irqbypass.h> |
| 89e1f7d4 AW |
17 | |
| 18 | #ifndef VFIO_PCI_PRIVATE_H | |
| 19 | #define VFIO_PCI_PRIVATE_H | |
| 20 | ||
| 21 | #define VFIO_PCI_OFFSET_SHIFT 40 | |
| 22 | ||
| 23 | #define VFIO_PCI_OFFSET_TO_INDEX(off) (off >> VFIO_PCI_OFFSET_SHIFT) | |
| 24 | #define VFIO_PCI_INDEX_TO_OFFSET(index) ((u64)(index) << VFIO_PCI_OFFSET_SHIFT) | |
| 25 | #define VFIO_PCI_OFFSET_MASK (((u64)(1) << VFIO_PCI_OFFSET_SHIFT) - 1) | |
| 26 | ||
| 27 | struct vfio_pci_irq_ctx { | |
| 28 | struct eventfd_ctx *trigger; | |
| 29 | struct virqfd *unmask; | |
| 30 | struct virqfd *mask; | |
| 31 | char *name; | |
| 32 | bool masked; | |
| 6d7425f1 | 33 | struct irq_bypass_producer producer; |
| 89e1f7d4 AW |
34 | }; |
| 35 | ||
| 36 | struct vfio_pci_device { | |
| 37 | struct pci_dev *pdev; | |
| 38 | void __iomem *barmap[PCI_STD_RESOURCE_END + 1]; | |
| 39 | u8 *pci_config_map; | |
| 40 | u8 *vconfig; | |
| 41 | struct perm_bits *msi_perm; | |
| 42 | spinlock_t irqlock; | |
| 43 | struct mutex igate; | |
| 44 | struct msix_entry *msix; | |
| 45 | struct vfio_pci_irq_ctx *ctx; | |
| 46 | int num_ctx; | |
| 47 | int irq_type; | |
| 48 | u8 msi_qmax; | |
| 49 | u8 msix_bar; | |
| 50 | u16 msix_size; | |
| 51 | u32 msix_offset; | |
| 52 | u32 rbar[7]; | |
| 53 | bool pci_2_3; | |
| 54 | bool virq_disabled; | |
| 55 | bool reset_works; | |
| 56 | bool extended_caps; | |
| 57 | bool bardirty; | |
| 84237a82 | 58 | bool has_vga; |
| bc4fba77 | 59 | bool needs_reset; |
| 89e1f7d4 | 60 | struct pci_saved_state *pci_saved_state; |
| 61d79256 | 61 | int refcnt; |
| dad9f897 | 62 | struct eventfd_ctx *err_trigger; |
| 6140a8f5 | 63 | struct eventfd_ctx *req_trigger; |
| 89e1f7d4 AW |
64 | }; |
| 65 | ||
| 66 | #define is_intx(vdev) (vdev->irq_type == VFIO_PCI_INTX_IRQ_INDEX) | |
| 67 | #define is_msi(vdev) (vdev->irq_type == VFIO_PCI_MSI_IRQ_INDEX) | |
| 68 | #define is_msix(vdev) (vdev->irq_type == VFIO_PCI_MSIX_IRQ_INDEX) | |
| 69 | #define is_irq_none(vdev) (!(is_intx(vdev) || is_msi(vdev) || is_msix(vdev))) | |
| 70 | #define irq_is(vdev, type) (vdev->irq_type == type) | |
| 71 | ||
| 72 | extern void vfio_pci_intx_mask(struct vfio_pci_device *vdev); | |
| 73 | extern void vfio_pci_intx_unmask(struct vfio_pci_device *vdev); | |
| 74 | ||
| 75 | extern int vfio_pci_set_irqs_ioctl(struct vfio_pci_device *vdev, | |
| 76 | uint32_t flags, unsigned index, | |
| 77 | unsigned start, unsigned count, void *data); | |
| 78 | ||
| 906ee99d AW |
79 | extern ssize_t vfio_pci_config_rw(struct vfio_pci_device *vdev, |
| 80 | char __user *buf, size_t count, | |
| 81 | loff_t *ppos, bool iswrite); | |
| 82 | ||
| 83 | extern ssize_t vfio_pci_bar_rw(struct vfio_pci_device *vdev, char __user *buf, | |
| 84 | size_t count, loff_t *ppos, bool iswrite); | |
| 89e1f7d4 | 85 | |
| 84237a82 AW |
86 | extern ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf, |
| 87 | size_t count, loff_t *ppos, bool iswrite); | |
| 88 | ||
| 89e1f7d4 AW |
89 | extern int vfio_pci_init_perm_bits(void); |
| 90 | extern void vfio_pci_uninit_perm_bits(void); | |
| 91 | ||
| 89e1f7d4 AW |
92 | extern int vfio_config_init(struct vfio_pci_device *vdev); |
| 93 | extern void vfio_config_free(struct vfio_pci_device *vdev); | |
| 94 | #endif /* VFIO_PCI_PRIVATE_H */ |