1 #ifndef QEMU_HW_XEN_PVDEV_H 2 #define QEMU_HW_XEN_PVDEV_H 3 4 #include "hw/qdev-core.h" 5 #include "hw/xen/xen_backend_ops.h" 6 7 /* ------------------------------------------------------------- */ 8 9 #define XEN_BUFSIZE 1024 10 11 struct XenLegacyDevice; 12 13 /* driver uses grant tables -> open gntdev device (xendev->gnttabdev) */ 14 #define DEVOPS_FLAG_NEED_GNTDEV 1 15 /* don't expect frontend doing correct state transitions (aka console quirk) */ 16 #define DEVOPS_FLAG_IGNORE_STATE 2 17 18 struct XenDevOps { 19 size_t size; 20 uint32_t flags; 21 void (*alloc)(struct XenLegacyDevice *xendev); 22 int (*init)(struct XenLegacyDevice *xendev); 23 int (*initialise)(struct XenLegacyDevice *xendev); 24 void (*connected)(struct XenLegacyDevice *xendev); 25 void (*event)(struct XenLegacyDevice *xendev); 26 void (*disconnect)(struct XenLegacyDevice *xendev); 27 int (*free)(struct XenLegacyDevice *xendev); 28 void (*backend_changed)(struct XenLegacyDevice *xendev, 29 const char *node); 30 void (*frontend_changed)(struct XenLegacyDevice *xendev, 31 const char *node); 32 }; 33 34 struct XenLegacyDevice { 35 DeviceState qdev; 36 const char *type; 37 int dom; 38 int dev; 39 char name[64]; 40 int debug; 41 42 struct qemu_xs_watch *watch; 43 enum xenbus_state be_state; 44 enum xenbus_state fe_state; 45 int online; 46 char be[XEN_BUFSIZE]; 47 char *fe; 48 char *protocol; 49 int remote_port; 50 int local_port; 51 52 xenevtchn_handle *evtchndev; 53 xengnttab_handle *gnttabdev; 54 55 const struct XenDevOps *ops; 56 QTAILQ_ENTRY(XenLegacyDevice) next; 57 }; 58 59 /* ------------------------------------------------------------- */ 60 61 /* xenstore helper functions */ 62 int xenstore_write_str(const char *base, const char *node, const char *val); 63 int xenstore_write_int(const char *base, const char *node, int ival); 64 int xenstore_write_int64(const char *base, const char *node, int64_t ival); 65 char *xenstore_read_str(const char *base, const char *node); 66 int xenstore_read_int(const char *base, const char *node, int *ival); 67 int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval); 68 69 const char *xenbus_strstate(enum xenbus_state state); 70 71 void xen_pv_evtchn_event(void *opaque); 72 void xen_pv_insert_xendev(struct XenLegacyDevice *xendev); 73 void xen_pv_del_xendev(struct XenLegacyDevice *xendev); 74 struct XenLegacyDevice *xen_pv_find_xendev(const char *type, int dom, int dev); 75 76 void xen_pv_unbind_evtchn(struct XenLegacyDevice *xendev); 77 int xen_pv_send_notify(struct XenLegacyDevice *xendev); 78 79 void xen_pv_printf(struct XenLegacyDevice *xendev, int msg_level, 80 const char *fmt, ...) G_GNUC_PRINTF(3, 4); 81 82 #endif /* QEMU_HW_XEN_PVDEV_H */ 83