1 files changed, 85 insertions, 0 deletions
diff --git a/src/include/ipxe/xenbus.h b/src/include/ipxe/xenbus.h
new file mode 100644
index 00000000..2777226f
--- /dev/null
+++ b/src/include/ipxe/xenbus.h
@@ -0,0 +1,85 @@
+#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_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 */