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gerrit-public.fairphone.software / kernel / msm-4.9 / 9875201e10496612080e7d164acc8f625c18725c / . / drivers / vfio / pci / vfio_pci_private.h
blob: 9c6d5d0f3b02db8cfb1acdd418b4a5abb44e12e5 [file] [log] [blame]
Alex Williamson89e1f7d2012-07-31 08:16:24 -0600[diff] [blame]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>
16
17#ifndef VFIO_PCI_PRIVATE_H
18#define VFIO_PCI_PRIVATE_H
19
20#define VFIO_PCI_OFFSET_SHIFT 40
21
22#define VFIO_PCI_OFFSET_TO_INDEX(off) (off >> VFIO_PCI_OFFSET_SHIFT)
23#define VFIO_PCI_INDEX_TO_OFFSET(index) ((u64)(index) << VFIO_PCI_OFFSET_SHIFT)
24#define VFIO_PCI_OFFSET_MASK (((u64)(1) << VFIO_PCI_OFFSET_SHIFT) - 1)
25
26struct vfio_pci_irq_ctx {
27 struct eventfd_ctx *trigger;
28 struct virqfd *unmask;
29 struct virqfd *mask;
30 char *name;
31 bool masked;
32};
33
34struct vfio_pci_device {
35 struct pci_dev *pdev;
36 void __iomem *barmap[PCI_STD_RESOURCE_END + 1];
37 u8 *pci_config_map;
38 u8 *vconfig;
39 struct perm_bits *msi_perm;
40 spinlock_t irqlock;
41 struct mutex igate;
42 struct msix_entry *msix;
43 struct vfio_pci_irq_ctx *ctx;
44 int num_ctx;
45 int irq_type;
46 u8 msi_qmax;
47 u8 msix_bar;
48 u16 msix_size;
49 u32 msix_offset;
50 u32 rbar[7];
51 bool pci_2_3;
52 bool virq_disabled;
53 bool reset_works;
54 bool extended_caps;
55 bool bardirty;
Alex Williamson84237a82013-02-18 10:11:13 -0700[diff] [blame]56 bool has_vga;
Alex Williamson89e1f7d2012-07-31 08:16:24 -0600[diff] [blame]57 struct pci_saved_state *pci_saved_state;
58 atomic_t refcnt;
Vijay Mohan Pandarathildad9f892013-03-11 09:31:22 -0600[diff] [blame]59 struct eventfd_ctx *err_trigger;
Alex Williamson89e1f7d2012-07-31 08:16:24 -0600[diff] [blame]60};
61
62#define is_intx(vdev) (vdev->irq_type == VFIO_PCI_INTX_IRQ_INDEX)
63#define is_msi(vdev) (vdev->irq_type == VFIO_PCI_MSI_IRQ_INDEX)
64#define is_msix(vdev) (vdev->irq_type == VFIO_PCI_MSIX_IRQ_INDEX)
65#define is_irq_none(vdev) (!(is_intx(vdev) || is_msi(vdev) || is_msix(vdev)))
66#define irq_is(vdev, type) (vdev->irq_type == type)
67
68extern void vfio_pci_intx_mask(struct vfio_pci_device *vdev);
69extern void vfio_pci_intx_unmask(struct vfio_pci_device *vdev);
70
71extern int vfio_pci_set_irqs_ioctl(struct vfio_pci_device *vdev,
72 uint32_t flags, unsigned index,
73 unsigned start, unsigned count, void *data);
74
Alex Williamson906ee992013-02-14 14:02:12 -0700[diff] [blame]75extern ssize_t vfio_pci_config_rw(struct vfio_pci_device *vdev,
76 char __user *buf, size_t count,
77 loff_t *ppos, bool iswrite);
78
79extern ssize_t vfio_pci_bar_rw(struct vfio_pci_device *vdev, char __user *buf,
80 size_t count, loff_t *ppos, bool iswrite);
Alex Williamson89e1f7d2012-07-31 08:16:24 -0600[diff] [blame]81
Alex Williamson84237a82013-02-18 10:11:13 -0700[diff] [blame]82extern ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf,
83 size_t count, loff_t *ppos, bool iswrite);
84
Alex Williamson89e1f7d2012-07-31 08:16:24 -0600[diff] [blame]85extern int vfio_pci_init_perm_bits(void);
86extern void vfio_pci_uninit_perm_bits(void);
87
88extern int vfio_pci_virqfd_init(void);
89extern void vfio_pci_virqfd_exit(void);
90
91extern int vfio_config_init(struct vfio_pci_device *vdev);
92extern void vfio_config_free(struct vfio_pci_device *vdev);
93#endif /* VFIO_PCI_PRIVATE_H */