Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / include / ipxe / xenbus.h

diff --git a/qemu/roms/ipxe/src/include/ipxe/xenbus.h b/qemu/roms/ipxe/src/include/ipxe/xenbus.h
new file mode 100644 (file)
index 0000000..ef2b549
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/xenbus.h
@@ -0,0 +1,86 @@
+#ifndef _IPXE_XENBUS_H
+#define _IPXE_XENBUS_H
+
+/** @file
+ *
+ * Xen device bus
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <ipxe/device.h>
+#include <ipxe/tables.h>
+#include <ipxe/xen.h>
+#include <xen/io/xenbus.h>
+
+/** A Xen device */
+struct xen_device {
+       /** Generic iPXE device */
+       struct device dev;
+       /** Xen hypervisor */
+       struct xen_hypervisor *xen;
+       /** XenStore key */
+       char *key;
+       /** Backend XenStore key */
+       char *backend;
+       /** Backend domain ID */
+       unsigned long backend_id;
+       /** Driver */
+       struct xen_driver *driver;
+       /** Driver-private data */
+       void *priv;
+};
+
+/** A Xen device driver */
+struct xen_driver {
+       /** Name */
+       const char *name;
+       /** Device type */
+       const char *type;
+       /** Probe device
+        *
+        * @v xendev            Xen device
+        * @ret rc              Return status code
+        */
+       int ( * probe ) ( struct xen_device *xendev );
+       /** Remove device
+        *
+        * @v xendev            Xen device
+        */
+       void ( * remove ) ( struct xen_device *xendev );
+};
+
+/** Xen device driver table */
+#define XEN_DRIVERS __table ( struct xen_driver, "xen_drivers" )
+
+/** Declare a Xen device driver */
+#define __xen_driver __table_entry ( XEN_DRIVERS, 01 )
+
+/**
+ * Set Xen device driver-private data
+ *
+ * @v xendev           Xen device
+ * @v priv             Private data
+ */
+static inline void xen_set_drvdata ( struct xen_device *xendev, void *priv ) {
+       xendev->priv = priv;
+}
+
+/**
+ * Get Xen device driver-private data
+ *
+ * @v xendev           Xen device
+ * @ret priv           Private data
+ */
+static inline void * xen_get_drvdata ( struct xen_device *xendev ) {
+       return xendev->priv;
+}
+
+extern int xenbus_set_state ( struct xen_device *xendev, int state );
+extern int xenbus_backend_state ( struct xen_device *xendev );
+extern int xenbus_backend_wait ( struct xen_device *xendev, int state );
+extern int xenbus_probe ( struct xen_hypervisor *xen, struct device *parent );
+extern void xenbus_remove ( struct xen_hypervisor *xen, struct device *parent );
+
+#endif /* _IPXE_XENBUS_H */