1 #ifndef HW_XEN_LEGACY_BACKEND_H 2 #define HW_XEN_LEGACY_BACKEND_H 3 4 #include "hw/xen/xen_backend_ops.h" 5 #include "hw/xen/xen_pvdev.h" 6 #include "qom/object.h" 7 8 #define TYPE_XENSYSDEV "xen-sysdev" 9 #define TYPE_XENSYSBUS "xen-sysbus" 10 #define TYPE_XENBACKEND "xen-backend" 11 12 typedef struct XenLegacyDevice XenLegacyDevice; 13 DECLARE_INSTANCE_CHECKER(XenLegacyDevice, XENBACKEND, 14 TYPE_XENBACKEND) 15 16 /* variables */ 17 extern struct qemu_xs_handle *xenstore; 18 extern const char *xen_protocol; 19 extern DeviceState *xen_sysdev; 20 extern BusState *xen_sysbus; 21 22 int xenstore_mkdir(char *path, int p); 23 int xenstore_write_be_str(struct XenLegacyDevice *xendev, const char *node, 24 const char *val); 25 int xenstore_write_be_int(struct XenLegacyDevice *xendev, const char *node, 26 int ival); 27 int xenstore_write_be_int64(struct XenLegacyDevice *xendev, const char *node, 28 int64_t ival); 29 char *xenstore_read_be_str(struct XenLegacyDevice *xendev, const char *node); 30 int xenstore_read_be_int(struct XenLegacyDevice *xendev, const char *node, 31 int *ival); 32 char *xenstore_read_fe_str(struct XenLegacyDevice *xendev, const char *node); 33 int xenstore_read_fe_int(struct XenLegacyDevice *xendev, const char *node, 34 int *ival); 35 int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node, 36 uint64_t *uval); 37 38 void xen_be_check_state(struct XenLegacyDevice *xendev); 39 40 /* xen backend driver bits */ 41 void xen_be_init(void); 42 int xen_be_register(const char *type, const struct XenDevOps *ops); 43 int xen_be_set_state(struct XenLegacyDevice *xendev, enum xenbus_state state); 44 int xen_be_bind_evtchn(struct XenLegacyDevice *xendev); 45 void xen_be_set_max_grant_refs(struct XenLegacyDevice *xendev, 46 unsigned int nr_refs); 47 void *xen_be_map_grant_refs(struct XenLegacyDevice *xendev, uint32_t *refs, 48 unsigned int nr_refs, int prot); 49 void xen_be_unmap_grant_refs(struct XenLegacyDevice *xendev, void *ptr, 50 uint32_t *refs, unsigned int nr_refs); 51 52 static inline void *xen_be_map_grant_ref(struct XenLegacyDevice *xendev, 53 uint32_t ref, int prot) 54 { 55 return xen_be_map_grant_refs(xendev, &ref, 1, prot); 56 } 57 58 static inline void xen_be_unmap_grant_ref(struct XenLegacyDevice *xendev, 59 void *ptr, uint32_t ref) 60 { 61 return xen_be_unmap_grant_refs(xendev, ptr, &ref, 1); 62 } 63 64 /* configuration (aka xenbus setup) */ 65 void xen_config_cleanup(void); 66 int xen_config_dev_vfb(int vdev, const char *type); 67 int xen_config_dev_vkbd(int vdev); 68 69 #endif /* HW_XEN_LEGACY_BACKEND_H */ 70