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https://github.com/edk2-porting/linux-next.git
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54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
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#ifndef _ASM_X86_XEN_PCI_H
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#define _ASM_X86_XEN_PCI_H
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#if defined(CONFIG_PCI_XEN)
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extern int __init pci_xen_init(void);
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#define pci_xen 1
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#else
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#define pci_xen 0
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#define pci_xen_init (0)
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#endif
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#if defined(CONFIG_PCI_MSI)
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#if defined(CONFIG_PCI_XEN)
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/* The drivers/pci/xen-pcifront.c sets this structure to
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* its own functions.
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*/
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struct xen_pci_frontend_ops {
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int (*enable_msi)(struct pci_dev *dev, int **vectors);
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void (*disable_msi)(struct pci_dev *dev);
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int (*enable_msix)(struct pci_dev *dev, int **vectors, int nvec);
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void (*disable_msix)(struct pci_dev *dev);
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};
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extern struct xen_pci_frontend_ops *xen_pci_frontend;
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static inline int xen_pci_frontend_enable_msi(struct pci_dev *dev,
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int **vectors)
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{
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if (xen_pci_frontend && xen_pci_frontend->enable_msi)
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return xen_pci_frontend->enable_msi(dev, vectors);
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return -ENODEV;
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}
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static inline void xen_pci_frontend_disable_msi(struct pci_dev *dev)
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{
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if (xen_pci_frontend && xen_pci_frontend->disable_msi)
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xen_pci_frontend->disable_msi(dev);
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}
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static inline int xen_pci_frontend_enable_msix(struct pci_dev *dev,
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int **vectors, int nvec)
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{
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if (xen_pci_frontend && xen_pci_frontend->enable_msix)
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return xen_pci_frontend->enable_msix(dev, vectors, nvec);
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return -ENODEV;
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}
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static inline void xen_pci_frontend_disable_msix(struct pci_dev *dev)
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{
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if (xen_pci_frontend && xen_pci_frontend->disable_msix)
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xen_pci_frontend->disable_msix(dev);
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}
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#endif /* CONFIG_PCI_XEN */
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#endif /* CONFIG_PCI_MSI */
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#endif /* _ASM_X86_XEN_PCI_H */
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