1 #ifndef QEMU_HW_XEN_PVDEV_H 2 #define QEMU_HW_XEN_PVDEV_H 3 4 #include "hw/xen/xen_common.h" 5 /* ------------------------------------------------------------- */ 6 7 #define XEN_BUFSIZE 1024 8 9 struct XenDevice; 10 11 /* driver uses grant tables -> open gntdev device (xendev->gnttabdev) */ 12 #define DEVOPS_FLAG_NEED_GNTDEV 1 13 /* don't expect frontend doing correct state transitions (aka console quirk) */ 14 #define DEVOPS_FLAG_IGNORE_STATE 2 15 16 struct XenDevOps { 17 size_t size; 18 uint32_t flags; 19 void (*alloc)(struct XenDevice *xendev); 20 int (*init)(struct XenDevice *xendev); 21 int (*initialise)(struct XenDevice *xendev); 22 void (*connected)(struct XenDevice *xendev); 23 void (*event)(struct XenDevice *xendev); 24 void (*disconnect)(struct XenDevice *xendev); 25 int (*free)(struct XenDevice *xendev); 26 void (*backend_changed)(struct XenDevice *xendev, const char *node); 27 void (*frontend_changed)(struct XenDevice *xendev, const char *node); 28 int (*backend_register)(void); 29 }; 30 31 struct XenDevice { 32 const char *type; 33 int dom; 34 int dev; 35 char name[64]; 36 int debug; 37 38 enum xenbus_state be_state; 39 enum xenbus_state fe_state; 40 int online; 41 char be[XEN_BUFSIZE]; 42 char *fe; 43 char *protocol; 44 int remote_port; 45 int local_port; 46 47 xenevtchn_handle *evtchndev; 48 xengnttab_handle *gnttabdev; 49 50 struct XenDevOps *ops; 51 QTAILQ_ENTRY(XenDevice) next; 52 }; 53 54 /* ------------------------------------------------------------- */ 55 56 /* xenstore helper functions */ 57 int xenstore_write_str(const char *base, const char *node, const char *val); 58 int xenstore_write_int(const char *base, const char *node, int ival); 59 int xenstore_write_int64(const char *base, const char *node, int64_t ival); 60 char *xenstore_read_str(const char *base, const char *node); 61 int xenstore_read_int(const char *base, const char *node, int *ival); 62 int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval); 63 void xenstore_update(void *unused); 64 65 const char *xenbus_strstate(enum xenbus_state state); 66 67 void xen_pv_evtchn_event(void *opaque); 68 void xen_pv_insert_xendev(struct XenDevice *xendev); 69 void xen_be_del_xendev(struct XenDevice *xendev); 70 struct XenDevice *xen_be_find_xendev(const char *type, int dom, int dev); 71 72 void xen_pv_unbind_evtchn(struct XenDevice *xendev); 73 int xen_pv_send_notify(struct XenDevice *xendev); 74 75 void xen_pv_printf(struct XenDevice *xendev, int msg_level, 76 const char *fmt, ...) GCC_FMT_ATTR(3, 4); 77 78 #endif /* QEMU_HW_XEN_PVDEV_H */ 79