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 DeviceState qdev; 33 const char *type; 34 int dom; 35 int dev; 36 char name[64]; 37 int debug; 38 39 enum xenbus_state be_state; 40 enum xenbus_state fe_state; 41 int online; 42 char be[XEN_BUFSIZE]; 43 char *fe; 44 char *protocol; 45 int remote_port; 46 int local_port; 47 48 xenevtchn_handle *evtchndev; 49 xengnttab_handle *gnttabdev; 50 51 struct XenDevOps *ops; 52 QTAILQ_ENTRY(XenDevice) next; 53 }; 54 55 /* ------------------------------------------------------------- */ 56 57 /* xenstore helper functions */ 58 int xenstore_write_str(const char *base, const char *node, const char *val); 59 int xenstore_write_int(const char *base, const char *node, int ival); 60 int xenstore_write_int64(const char *base, const char *node, int64_t ival); 61 char *xenstore_read_str(const char *base, const char *node); 62 int xenstore_read_int(const char *base, const char *node, int *ival); 63 int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval); 64 void xenstore_update(void *unused); 65 66 const char *xenbus_strstate(enum xenbus_state state); 67 68 void xen_pv_evtchn_event(void *opaque); 69 void xen_pv_insert_xendev(struct XenDevice *xendev); 70 void xen_pv_del_xendev(struct XenDevice *xendev); 71 struct XenDevice *xen_pv_find_xendev(const char *type, int dom, int dev); 72 73 void xen_pv_unbind_evtchn(struct XenDevice *xendev); 74 int xen_pv_send_notify(struct XenDevice *xendev); 75 76 void xen_pv_printf(struct XenDevice *xendev, int msg_level, 77 const char *fmt, ...) GCC_FMT_ATTR(3, 4); 78 79 #endif /* QEMU_HW_XEN_PVDEV_H */ 80