projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| b5401a96 AN |
2 | #ifndef _ASM_X86_XEN_PCI_H |
| 3 | #define _ASM_X86_XEN_PCI_H | |
| 4 | ||
| 5 | #if defined(CONFIG_PCI_XEN) | |
| 6 | extern int __init pci_xen_init(void); | |
| 3942b740 | 7 | extern int __init pci_xen_hvm_init(void); |
| b5401a96 AN |
8 | #define pci_xen 1 |
| 9 | #else | |
| 10 | #define pci_xen 0 | |
| 11 | #define pci_xen_init (0) | |
| 3942b740 SS |
12 | static inline int pci_xen_hvm_init(void) |
| 13 | { | |
| 14 | return -1; | |
| 15 | } | |
| b5401a96 | 16 | #endif |
| 38aa66fc | 17 | #if defined(CONFIG_XEN_DOM0) |
| a0ee0567 | 18 | int __init pci_xen_initial_domain(void); |
| c55fa78b KRW |
19 | int xen_find_device_domain_owner(struct pci_dev *dev); |
| 20 | int xen_register_device_domain_owner(struct pci_dev *dev, uint16_t domain); | |
| 21 | int xen_unregister_device_domain_owner(struct pci_dev *dev); | |
| 38aa66fc | 22 | #else |
| a0ee0567 | 23 | static inline int __init pci_xen_initial_domain(void) |
| 38aa66fc | 24 | { |
| a0ee0567 | 25 | return -1; |
| 38aa66fc | 26 | } |
| c55fa78b KRW |
27 | static inline int xen_find_device_domain_owner(struct pci_dev *dev) |
| 28 | { | |
| 29 | return -1; | |
| 30 | } | |
| 31 | static inline int xen_register_device_domain_owner(struct pci_dev *dev, | |
| 32 | uint16_t domain) | |
| 33 | { | |
| 34 | return -1; | |
| 35 | } | |
| 36 | static inline int xen_unregister_device_domain_owner(struct pci_dev *dev) | |
| 37 | { | |
| 38 | return -1; | |
| 39 | } | |
| 38aa66fc | 40 | #endif |
| b5401a96 AN |
41 | |
| 42 | #if defined(CONFIG_PCI_MSI) | |
| 43 | #if defined(CONFIG_PCI_XEN) | |
| 44 | /* The drivers/pci/xen-pcifront.c sets this structure to | |
| 45 | * its own functions. | |
| 46 | */ | |
| 47 | struct xen_pci_frontend_ops { | |
| cc0f89c4 | 48 | int (*enable_msi)(struct pci_dev *dev, int vectors[]); |
| b5401a96 | 49 | void (*disable_msi)(struct pci_dev *dev); |
| cc0f89c4 | 50 | int (*enable_msix)(struct pci_dev *dev, int vectors[], int nvec); |
| b5401a96 AN |
51 | void (*disable_msix)(struct pci_dev *dev); |
| 52 | }; | |
| 53 | ||
| 54 | extern struct xen_pci_frontend_ops *xen_pci_frontend; | |
| 55 | ||
| 56 | static inline int xen_pci_frontend_enable_msi(struct pci_dev *dev, | |
| cc0f89c4 | 57 | int vectors[]) |
| b5401a96 AN |
58 | { |
| 59 | if (xen_pci_frontend && xen_pci_frontend->enable_msi) | |
| 60 | return xen_pci_frontend->enable_msi(dev, vectors); | |
| 2cfec6a2 | 61 | return -ENOSYS; |
| b5401a96 AN |
62 | } |
| 63 | static inline void xen_pci_frontend_disable_msi(struct pci_dev *dev) | |
| 64 | { | |
| 65 | if (xen_pci_frontend && xen_pci_frontend->disable_msi) | |
| 66 | xen_pci_frontend->disable_msi(dev); | |
| 67 | } | |
| 68 | static inline int xen_pci_frontend_enable_msix(struct pci_dev *dev, | |
| cc0f89c4 | 69 | int vectors[], int nvec) |
| b5401a96 AN |
70 | { |
| 71 | if (xen_pci_frontend && xen_pci_frontend->enable_msix) | |
| 72 | return xen_pci_frontend->enable_msix(dev, vectors, nvec); | |
| 2cfec6a2 | 73 | return -ENOSYS; |
| b5401a96 AN |
74 | } |
| 75 | static inline void xen_pci_frontend_disable_msix(struct pci_dev *dev) | |
| 76 | { | |
| 77 | if (xen_pci_frontend && xen_pci_frontend->disable_msix) | |
| 78 | xen_pci_frontend->disable_msix(dev); | |
| 79 | } | |
| 80 | #endif /* CONFIG_PCI_XEN */ | |
| 81 | #endif /* CONFIG_PCI_MSI */ | |
| 82 | ||
| 83 | #endif /* _ASM_X86_XEN_PCI_H */ |