LXR linux/include/xen/platform

   1#ifndef _XEN_PLATFORM_PCI_H
   2#define _XEN_PLATFORM_PCI_H
   3
   4#define XEN_IOPORT_MAGIC_VAL 0x49d2
   5#define XEN_IOPORT_LINUX_PRODNUM 0x0003
   6#define XEN_IOPORT_LINUX_DRVVER  0x0001
   7
   8#define XEN_IOPORT_BASE 0x10
   9
  10#define XEN_IOPORT_PLATFLAGS    (XEN_IOPORT_BASE + 0) /* 1 byte access (R/W) */
  11#define XEN_IOPORT_MAGIC        (XEN_IOPORT_BASE + 0) /* 2 byte access (R) */
  12#define XEN_IOPORT_UNPLUG       (XEN_IOPORT_BASE + 0) /* 2 byte access (W) */
  13#define XEN_IOPORT_DRVVER       (XEN_IOPORT_BASE + 0) /* 4 byte access (W) */
  14
  15#define XEN_IOPORT_SYSLOG       (XEN_IOPORT_BASE + 2) /* 1 byte access (W) */
  16#define XEN_IOPORT_PROTOVER     (XEN_IOPORT_BASE + 2) /* 1 byte access (R) */
  17#define XEN_IOPORT_PRODNUM      (XEN_IOPORT_BASE + 2) /* 2 byte access (W) */
  18
  19#define XEN_UNPLUG_ALL_IDE_DISKS        (1<<0)
  20#define XEN_UNPLUG_ALL_NICS             (1<<1)
  21#define XEN_UNPLUG_AUX_IDE_DISKS        (1<<2)
  22#define XEN_UNPLUG_ALL                  (XEN_UNPLUG_ALL_IDE_DISKS|\
  23                                         XEN_UNPLUG_ALL_NICS|\
  24                                         XEN_UNPLUG_AUX_IDE_DISKS)
  25
  26#define XEN_UNPLUG_UNNECESSARY          (1<<16)
  27#define XEN_UNPLUG_NEVER                        (1<<17)
  28
  29static inline int xen_must_unplug_nics(void) {
  30#if (defined(CONFIG_XEN_NETDEV_FRONTEND) || \
  31                defined(CONFIG_XEN_NETDEV_FRONTEND_MODULE)) && \
  32                defined(CONFIG_XEN_PVHVM)
  33        return 1;
  34#else
  35        return 0;
  36#endif
  37}
  38
  39static inline int xen_must_unplug_disks(void) {
  40#if (defined(CONFIG_XEN_BLKDEV_FRONTEND) || \
  41                defined(CONFIG_XEN_BLKDEV_FRONTEND_MODULE)) && \
  42                defined(CONFIG_XEN_PVHVM)
  43        return 1;
  44#else
  45        return 0;
  46#endif
  47}
  48
  49#if defined(CONFIG_XEN_PVHVM)
  50extern bool xen_has_pv_devices(void);
  51extern bool xen_has_pv_disk_devices(void);
  52extern bool xen_has_pv_nic_devices(void);
  53extern bool xen_has_pv_and_legacy_disk_devices(void);
  54#else
  55static inline bool xen_has_pv_devices(void)
  56{
  57        return IS_ENABLED(CONFIG_XEN);
  58}
  59static inline bool xen_has_pv_disk_devices(void)
  60{
  61        return IS_ENABLED(CONFIG_XEN);
  62}
  63static inline bool xen_has_pv_nic_devices(void)
  64{
  65        return IS_ENABLED(CONFIG_XEN);
  66}
  67static inline bool xen_has_pv_and_legacy_disk_devices(void)
  68{
  69        return false;
  70}
  71#endif
  72#endif /* _XEN_PLATFORM_PCI_H */
  73