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