87 lines
1.9 KiB
C
87 lines
1.9 KiB
C
#ifndef _IPXE_XENBUS_H
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#define _IPXE_XENBUS_H
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/** @file
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*
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* Xen device bus
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <ipxe/device.h>
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#include <ipxe/tables.h>
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#include <ipxe/xen.h>
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#include <xen/io/xenbus.h>
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/** A Xen device */
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struct xen_device {
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/** Generic iPXE device */
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struct device dev;
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/** Xen hypervisor */
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struct xen_hypervisor *xen;
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/** XenStore key */
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char *key;
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/** Backend XenStore key */
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char *backend;
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/** Backend domain ID */
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unsigned long backend_id;
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/** Driver */
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struct xen_driver *driver;
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/** Driver-private data */
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void *priv;
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};
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/** A Xen device driver */
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struct xen_driver {
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/** Name */
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const char *name;
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/** Device type */
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const char *type;
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/** Probe device
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*
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* @v xendev Xen device
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* @ret rc Return status code
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*/
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int ( * probe ) ( struct xen_device *xendev );
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/** Remove device
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*
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* @v xendev Xen device
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*/
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void ( * remove ) ( struct xen_device *xendev );
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};
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/** Xen device driver table */
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#define XEN_DRIVERS __table ( struct xen_driver, "xen_drivers" )
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/** Declare a Xen device driver */
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#define __xen_driver __table_entry ( XEN_DRIVERS, 01 )
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/**
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* Set Xen device driver-private data
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*
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* @v xendev Xen device
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* @v priv Private data
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*/
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static inline void xen_set_drvdata ( struct xen_device *xendev, void *priv ) {
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xendev->priv = priv;
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}
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/**
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* Get Xen device driver-private data
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*
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* @v xendev Xen device
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* @ret priv Private data
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*/
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static inline void * xen_get_drvdata ( struct xen_device *xendev ) {
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return xendev->priv;
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}
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extern int xenbus_set_state ( struct xen_device *xendev, int state );
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extern int xenbus_backend_state ( struct xen_device *xendev );
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extern int xenbus_backend_wait ( struct xen_device *xendev, int state );
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extern int xenbus_probe ( struct xen_hypervisor *xen, struct device *parent );
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extern void xenbus_remove ( struct xen_hypervisor *xen, struct device *parent );
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#endif /* _IPXE_XENBUS_H */
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