Commit | Line | Data |
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b5401a96 AN |
1 | #ifndef _ASM_X86_XEN_PCI_H |
2 | #define _ASM_X86_XEN_PCI_H | |
3 | ||
4 | #if defined(CONFIG_PCI_XEN) | |
5 | extern int __init pci_xen_init(void); | |
3942b740 | 6 | extern int __init pci_xen_hvm_init(void); |
b5401a96 AN |
7 | #define pci_xen 1 |
8 | #else | |
9 | #define pci_xen 0 | |
10 | #define pci_xen_init (0) | |
3942b740 SS |
11 | static inline int pci_xen_hvm_init(void) |
12 | { | |
13 | return -1; | |
14 | } | |
b5401a96 | 15 | #endif |
38aa66fc | 16 | #if defined(CONFIG_XEN_DOM0) |
a0ee0567 | 17 | int __init pci_xen_initial_domain(void); |
c55fa78b KRW |
18 | int xen_find_device_domain_owner(struct pci_dev *dev); |
19 | int xen_register_device_domain_owner(struct pci_dev *dev, uint16_t domain); | |
20 | int xen_unregister_device_domain_owner(struct pci_dev *dev); | |
38aa66fc | 21 | #else |
a0ee0567 | 22 | static inline int __init pci_xen_initial_domain(void) |
38aa66fc | 23 | { |
a0ee0567 | 24 | return -1; |
38aa66fc | 25 | } |
c55fa78b KRW |
26 | static inline int xen_find_device_domain_owner(struct pci_dev *dev) |
27 | { | |
28 | return -1; | |
29 | } | |
30 | static inline int xen_register_device_domain_owner(struct pci_dev *dev, | |
31 | uint16_t domain) | |
32 | { | |
33 | return -1; | |
34 | } | |
35 | static inline int xen_unregister_device_domain_owner(struct pci_dev *dev) | |
36 | { | |
37 | return -1; | |
38 | } | |
38aa66fc | 39 | #endif |
b5401a96 AN |
40 | |
41 | #if defined(CONFIG_PCI_MSI) | |
42 | #if defined(CONFIG_PCI_XEN) | |
43 | /* The drivers/pci/xen-pcifront.c sets this structure to | |
44 | * its own functions. | |
45 | */ | |
46 | struct xen_pci_frontend_ops { | |
cc0f89c4 | 47 | int (*enable_msi)(struct pci_dev *dev, int vectors[]); |
b5401a96 | 48 | void (*disable_msi)(struct pci_dev *dev); |
cc0f89c4 | 49 | int (*enable_msix)(struct pci_dev *dev, int vectors[], int nvec); |
b5401a96 AN |
50 | void (*disable_msix)(struct pci_dev *dev); |
51 | }; | |
52 | ||
53 | extern struct xen_pci_frontend_ops *xen_pci_frontend; | |
54 | ||
55 | static inline int xen_pci_frontend_enable_msi(struct pci_dev *dev, | |
cc0f89c4 | 56 | int vectors[]) |
b5401a96 AN |
57 | { |
58 | if (xen_pci_frontend && xen_pci_frontend->enable_msi) | |
59 | return xen_pci_frontend->enable_msi(dev, vectors); | |
2cfec6a2 | 60 | return -ENOSYS; |
b5401a96 AN |
61 | } |
62 | static inline void xen_pci_frontend_disable_msi(struct pci_dev *dev) | |
63 | { | |
64 | if (xen_pci_frontend && xen_pci_frontend->disable_msi) | |
65 | xen_pci_frontend->disable_msi(dev); | |
66 | } | |
67 | static inline int xen_pci_frontend_enable_msix(struct pci_dev *dev, | |
cc0f89c4 | 68 | int vectors[], int nvec) |
b5401a96 AN |
69 | { |
70 | if (xen_pci_frontend && xen_pci_frontend->enable_msix) | |
71 | return xen_pci_frontend->enable_msix(dev, vectors, nvec); | |
2cfec6a2 | 72 | return -ENOSYS; |
b5401a96 AN |
73 | } |
74 | static inline void xen_pci_frontend_disable_msix(struct pci_dev *dev) | |
75 | { | |
76 | if (xen_pci_frontend && xen_pci_frontend->disable_msix) | |
77 | xen_pci_frontend->disable_msix(dev); | |
78 | } | |
79 | #endif /* CONFIG_PCI_XEN */ | |
80 | #endif /* CONFIG_PCI_MSI */ | |
81 | ||
82 | #endif /* _ASM_X86_XEN_PCI_H */ |