platform_pci.h

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#ifndef _XEN_PLATFORM_PCI_H
#define _XEN_PLATFORM_PCI_H

#define XEN_IOPORT_MAGIC_VAL 0x49d2
#define XEN_IOPORT_LINUX_PRODNUM 0x0003
#define XEN_IOPORT_LINUX_DRVVER  0x0001

#define XEN_IOPORT_BASE 0x10

#define XEN_IOPORT_PLATFLAGS    (XEN_IOPORT_BASE + 0) /* 1 byte access (R/W) */
#define XEN_IOPORT_MAGIC    (XEN_IOPORT_BASE + 0) /* 2 byte access (R) */
#define XEN_IOPORT_UNPLUG   (XEN_IOPORT_BASE + 0) /* 2 byte access (W) */
#define XEN_IOPORT_DRVVER   (XEN_IOPORT_BASE + 0) /* 4 byte access (W) */

#define XEN_IOPORT_SYSLOG   (XEN_IOPORT_BASE + 2) /* 1 byte access (W) */
#define XEN_IOPORT_PROTOVER (XEN_IOPORT_BASE + 2) /* 1 byte access (R) */
#define XEN_IOPORT_PRODNUM  (XEN_IOPORT_BASE + 2) /* 2 byte access (W) */

#define XEN_UNPLUG_ALL_IDE_DISKS    (1<<0)
#define XEN_UNPLUG_ALL_NICS     (1<<1)
#define XEN_UNPLUG_AUX_IDE_DISKS    (1<<2)
#define XEN_UNPLUG_ALL          (XEN_UNPLUG_ALL_IDE_DISKS|\
                     XEN_UNPLUG_ALL_NICS|\
                     XEN_UNPLUG_AUX_IDE_DISKS)

#define XEN_UNPLUG_UNNECESSARY      (1<<16)
#define XEN_UNPLUG_NEVER            (1<<17)

static inline int xen_must_unplug_nics(void) {
#if (defined(CONFIG_XEN_NETDEV_FRONTEND) || \
        defined(CONFIG_XEN_NETDEV_FRONTEND_MODULE)) && \
        defined(CONFIG_XEN_PVHVM)
        return 1;
#else
        return 0;
#endif
}

static inline int xen_must_unplug_disks(void) {
#if (defined(CONFIG_XEN_BLKDEV_FRONTEND) || \
        defined(CONFIG_XEN_BLKDEV_FRONTEND_MODULE)) && \
        defined(CONFIG_XEN_PVHVM)
        return 1;
#else
        return 0;
#endif
}

extern int xen_platform_pci_unplug;

#endif /* _XEN_PLATFORM_PCI_H */