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/* SPDX-License-Identifier: GPL-2.0 */
#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
}
#if defined(CONFIG_XEN_PVHVM)
extern bool xen_has_pv_devices(void);
extern bool xen_has_pv_disk_devices(void);
extern bool xen_has_pv_nic_devices(void);
extern bool xen_has_pv_and_legacy_disk_devices(void);
#else
static inline bool xen_has_pv_devices(void)
{
return IS_ENABLED(CONFIG_XEN);
}
static inline bool xen_has_pv_disk_devices(void)
{
return IS_ENABLED(CONFIG_XEN);
}
static inline bool xen_has_pv_nic_devices(void)
{
return IS_ENABLED(CONFIG_XEN);
}
static inline bool xen_has_pv_and_legacy_disk_devices(void)
{
return false;
}
#endif
#endif /* _XEN_PLATFORM_PCI_H */