1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _XEN_PLATFORM_PCI_H 3 #define _XEN_PLATFORM_PCI_H 4 5 #define XEN_IOPORT_MAGIC_VAL 0x49d2 6 #define XEN_IOPORT_LINUX_PRODNUM 0x0003 7 #define XEN_IOPORT_LINUX_DRVVER 0x0001 8 9 #define XEN_IOPORT_BASE 0x10 10 11 #define XEN_IOPORT_PLATFLAGS (XEN_IOPORT_BASE + 0) /* 1 byte access (R/W) */ 12 #define XEN_IOPORT_MAGIC (XEN_IOPORT_BASE + 0) /* 2 byte access (R) */ 13 #define XEN_IOPORT_UNPLUG (XEN_IOPORT_BASE + 0) /* 2 byte access (W) */ 14 #define XEN_IOPORT_DRVVER (XEN_IOPORT_BASE + 0) /* 4 byte access (W) */ 15 16 #define XEN_IOPORT_SYSLOG (XEN_IOPORT_BASE + 2) /* 1 byte access (W) */ 17 #define XEN_IOPORT_PROTOVER (XEN_IOPORT_BASE + 2) /* 1 byte access (R) */ 18 #define XEN_IOPORT_PRODNUM (XEN_IOPORT_BASE + 2) /* 2 byte access (W) */ 19 20 #define XEN_UNPLUG_ALL_IDE_DISKS (1<<0) 21 #define XEN_UNPLUG_ALL_NICS (1<<1) 22 #define XEN_UNPLUG_AUX_IDE_DISKS (1<<2) 23 #define XEN_UNPLUG_ALL (XEN_UNPLUG_ALL_IDE_DISKS|\ 24 XEN_UNPLUG_ALL_NICS|\ 25 XEN_UNPLUG_AUX_IDE_DISKS) 26 27 #define XEN_UNPLUG_UNNECESSARY (1<<16) 28 #define XEN_UNPLUG_NEVER (1<<17) 29 30 static inline int xen_must_unplug_nics(void) { 31 #if (defined(CONFIG_XEN_NETDEV_FRONTEND) || \ 32 defined(CONFIG_XEN_NETDEV_FRONTEND_MODULE)) && \ 33 defined(CONFIG_XEN_PVHVM) 34 return 1; 35 #else 36 return 0; 37 #endif 38 } 39 40 static inline int xen_must_unplug_disks(void) { 41 #if (defined(CONFIG_XEN_BLKDEV_FRONTEND) || \ 42 defined(CONFIG_XEN_BLKDEV_FRONTEND_MODULE)) && \ 43 defined(CONFIG_XEN_PVHVM) 44 return 1; 45 #else 46 return 0; 47 #endif 48 } 49 50 #if defined(CONFIG_XEN_PVHVM) 51 extern bool xen_has_pv_devices(void); 52 extern bool xen_has_pv_disk_devices(void); 53 extern bool xen_has_pv_nic_devices(void); 54 extern bool xen_has_pv_and_legacy_disk_devices(void); 55 #else 56 static inline bool xen_has_pv_devices(void) 57 { 58 return IS_ENABLED(CONFIG_XEN); 59 } 60 static inline bool xen_has_pv_disk_devices(void) 61 { 62 return IS_ENABLED(CONFIG_XEN); 63 } 64 static inline bool xen_has_pv_nic_devices(void) 65 { 66 return IS_ENABLED(CONFIG_XEN); 67 } 68 static inline bool xen_has_pv_and_legacy_disk_devices(void) 69 { 70 return false; 71 } 72 #endif 73 #endif /* _XEN_PLATFORM_PCI_H */ 74