Replace GCC_FMT_ATTR with G_GNUC_PRINTF

[mirror_qemu.git] / include / hw / xen / xen-bus.h

diff --git a/include/hw/xen/xen-bus.h b/include/hw/xen/xen-bus.h
index 85a75d8dec93e704fcc915387c02ba509e8fe31d..713e763348f4c1ecccc8116c3293df3094be120d 100644 (file)
--- a/include/hw/xen/xen-bus.h
+++ b/include/hw/xen/xen-bus.h
@@ -10,21 +10,43 @@
 
 #include "hw/xen/xen_common.h"
 #include "hw/sysbus.h"
+#include "qemu/notify.h"
+#include "qom/object.h"
 
-typedef struct XenDevice {
+typedef void (*XenWatchHandler)(void *opaque);
+
+typedef struct XenWatchList XenWatchList;
+typedef struct XenWatch XenWatch;
+typedef struct XenEventChannel XenEventChannel;
+
+struct XenDevice {
     DeviceState qdev;
     domid_t frontend_id;
     char *name;
+    struct xs_handle *xsh;
+    XenWatchList *watch_list;
     char *backend_path, *frontend_path;
     enum xenbus_state backend_state, frontend_state;
     Notifier exit;
-} XenDevice;
+    XenWatch *backend_state_watch, *frontend_state_watch;
+    bool backend_online;
+    XenWatch *backend_online_watch;
+    xengnttab_handle *xgth;
+    bool feature_grant_copy;
+    bool inactive;
+    QLIST_HEAD(, XenEventChannel) event_channels;
+    QLIST_ENTRY(XenDevice) list;
+};
+typedef struct XenDevice XenDevice;
 
 typedef char *(*XenDeviceGetName)(XenDevice *xendev, Error **errp);
 typedef void (*XenDeviceRealize)(XenDevice *xendev, Error **errp);
-typedef void (*XenDeviceUnrealize)(XenDevice *xendev, Error **errp);
+typedef void (*XenDeviceFrontendChanged)(XenDevice *xendev,
+                                         enum xenbus_state frontend_state,
+                                         Error **errp);
+typedef void (*XenDeviceUnrealize)(XenDevice *xendev);
 
-typedef struct XenDeviceClass {
+struct XenDeviceClass {
     /*< private >*/
     DeviceClass parent_class;
     /*< public >*/
@@ -32,36 +54,86 @@ typedef struct XenDeviceClass {
     const char *device;
     XenDeviceGetName get_name;
     XenDeviceRealize realize;
+    XenDeviceFrontendChanged frontend_changed;
     XenDeviceUnrealize unrealize;
-} XenDeviceClass;
+};
 
 #define TYPE_XEN_DEVICE "xen-device"
-#define XEN_DEVICE(obj) \
-     OBJECT_CHECK(XenDevice, (obj), TYPE_XEN_DEVICE)
-#define XEN_DEVICE_CLASS(class) \
-     OBJECT_CLASS_CHECK(XenDeviceClass, (class), TYPE_XEN_DEVICE)
-#define XEN_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(XenDeviceClass, (obj), TYPE_XEN_DEVICE)
-
-typedef struct XenBus {
+OBJECT_DECLARE_TYPE(XenDevice, XenDeviceClass, XEN_DEVICE)
+
+struct XenBus {
     BusState qbus;
     domid_t backend_id;
     struct xs_handle *xsh;
-} XenBus;
+    XenWatchList *watch_list;
+    unsigned int backend_types;
+    XenWatch **backend_watch;
+    QLIST_HEAD(, XenDevice) inactive_devices;
+};
 
-typedef struct XenBusClass {
+struct XenBusClass {
     /*< private >*/
     BusClass parent_class;
-} XenBusClass;
+};
 
 #define TYPE_XEN_BUS "xen-bus"
-#define XEN_BUS(obj) \
-    OBJECT_CHECK(XenBus, (obj), TYPE_XEN_BUS)
-#define XEN_BUS_CLASS(class) \
-    OBJECT_CLASS_CHECK(XenBusClass, (class), TYPE_XEN_BUS)
-#define XEN_BUS_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(XenBusClass, (obj), TYPE_XEN_BUS)
+OBJECT_DECLARE_TYPE(XenBus, XenBusClass,
+                    XEN_BUS)
 
 void xen_bus_init(void);
 
+void xen_device_backend_set_state(XenDevice *xendev,
+                                  enum xenbus_state state);
+enum xenbus_state xen_device_backend_get_state(XenDevice *xendev);
+
+void xen_device_backend_printf(XenDevice *xendev, const char *key,
+                               const char *fmt, ...)
+    G_GNUC_PRINTF(3, 4);
+void xen_device_frontend_printf(XenDevice *xendev, const char *key,
+                                const char *fmt, ...)
+    G_GNUC_PRINTF(3, 4);
+
+int xen_device_frontend_scanf(XenDevice *xendev, const char *key,
+                              const char *fmt, ...);
+
+void xen_device_set_max_grant_refs(XenDevice *xendev, unsigned int nr_refs,
+                                   Error **errp);
+void *xen_device_map_grant_refs(XenDevice *xendev, uint32_t *refs,
+                                unsigned int nr_refs, int prot,
+                                Error **errp);
+void xen_device_unmap_grant_refs(XenDevice *xendev, void *map,
+                                 unsigned int nr_refs, Error **errp);
+
+typedef struct XenDeviceGrantCopySegment {
+    union {
+        void *virt;
+        struct {
+            uint32_t ref;
+            off_t offset;
+        } foreign;
+    } source, dest;
+    size_t len;
+} XenDeviceGrantCopySegment;
+
+void xen_device_copy_grant_refs(XenDevice *xendev, bool to_domain,
+                                XenDeviceGrantCopySegment segs[],
+                                unsigned int nr_segs, Error **errp);
+
+typedef bool (*XenEventHandler)(void *opaque);
+
+XenEventChannel *xen_device_bind_event_channel(XenDevice *xendev,
+                                               unsigned int port,
+                                               XenEventHandler handler,
+                                               void *opaque, Error **errp);
+void xen_device_set_event_channel_context(XenDevice *xendev,
+                                          XenEventChannel *channel,
+                                          AioContext *ctx,
+                                          Error **errp);
+void xen_device_notify_event_channel(XenDevice *xendev,
+                                     XenEventChannel *channel,
+                                     Error **errp);
+void xen_device_unbind_event_channel(XenDevice *xendev,
+                                     XenEventChannel *channel,
+                                     Error **errp);
+
 #endif /* HW_XEN_BUS_H */