1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_X86_XEN_PCI_H
3 #define _ASM_X86_XEN_PCI_H
5 #if defined(CONFIG_PCI_XEN)
6 extern int __init pci_xen_init(void);
7 extern int __init pci_xen_hvm_init(void);
11 #define pci_xen_init (0)
12 static inline int pci_xen_hvm_init(void)
17 #if defined(CONFIG_XEN_DOM0)
18 int __init pci_xen_initial_domain(void);
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);
23 static inline int __init pci_xen_initial_domain(void)
27 static inline int xen_find_device_domain_owner(struct pci_dev *dev)
31 static inline int xen_register_device_domain_owner(struct pci_dev *dev,
36 static inline int xen_unregister_device_domain_owner(struct pci_dev *dev)
42 #if defined(CONFIG_PCI_MSI)
43 #if defined(CONFIG_PCI_XEN)
44 /* The drivers/pci/xen-pcifront.c sets this structure to
47 struct xen_pci_frontend_ops {
48 int (*enable_msi)(struct pci_dev *dev, int vectors[]);
49 void (*disable_msi)(struct pci_dev *dev);
50 int (*enable_msix)(struct pci_dev *dev, int vectors[], int nvec);
51 void (*disable_msix)(struct pci_dev *dev);
54 extern struct xen_pci_frontend_ops *xen_pci_frontend;
56 static inline int xen_pci_frontend_enable_msi(struct pci_dev *dev,
59 if (xen_pci_frontend && xen_pci_frontend->enable_msi)
60 return xen_pci_frontend->enable_msi(dev, vectors);
63 static inline void xen_pci_frontend_disable_msi(struct pci_dev *dev)
65 if (xen_pci_frontend && xen_pci_frontend->disable_msi)
66 xen_pci_frontend->disable_msi(dev);
68 static inline int xen_pci_frontend_enable_msix(struct pci_dev *dev,
69 int vectors[], int nvec)
71 if (xen_pci_frontend && xen_pci_frontend->enable_msix)
72 return xen_pci_frontend->enable_msix(dev, vectors, nvec);
75 static inline void xen_pci_frontend_disable_msix(struct pci_dev *dev)
77 if (xen_pci_frontend && xen_pci_frontend->disable_msix)
78 xen_pci_frontend->disable_msix(dev);
80 #endif /* CONFIG_PCI_XEN */
81 #endif /* CONFIG_PCI_MSI */
83 #endif /* _ASM_X86_XEN_PCI_H */