include/xen/platform_pci.h

   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
  29 static 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
  39 static 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 extern int xen_platform_pci_unplug;
  50
  51 #if defined(CONFIG_XEN_PVHVM)
  52 extern bool xen_has_pv_devices(void);
  53 extern bool xen_has_pv_disk_devices(void);
  54 extern bool xen_has_pv_nic_devices(void);
  55 extern bool xen_has_pv_and_legacy_disk_devices(void);
  56 #else
  57 static inline bool xen_has_pv_devices(void)
  58 {
  59         return IS_ENABLED(CONFIG_XEN);
  60 }
  61 static inline bool xen_has_pv_disk_devices(void)
  62 {
  63         return IS_ENABLED(CONFIG_XEN);
  64 }
  65 static inline bool xen_has_pv_nic_devices(void)
  66 {
  67         return IS_ENABLED(CONFIG_XEN);
  68 }
  69 static inline bool xen_has_pv_and_legacy_disk_devices(void)
  70 {
  71         return false;
  72 }
  73 #endif
  74 #endif /* _XEN_PLATFORM_PCI_H */