xenevent.h

Go to the documentation of this file.

#ifndef _IPXE_XENEVENT_H
#define _IPXE_XENEVENT_H

/** @file
 *
 * Xen events
 *
 */

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
FILE_SECBOOT ( PERMITTED );

#include <ipxe/xen.h>
#include <xen/event_channel.h>

/**
 * Close event channel
 *
 * @v xen               Xen hypervisor
 * @v close             Event descriptor
 * @ret xenrc           Xen status code
 */
static inline __attribute__ (( always_inline )) int
xenevent_close ( struct xen_hypervisor *xen, struct evtchn_close *close ) {

        return xen_hypercall_2 ( xen, __HYPERVISOR_event_channel_op,
                                 EVTCHNOP_close, virt_to_phys ( close ) );
}

/**
 * Send event
 *
 * @v xen               Xen hypervisor
 * @v send              Event descriptor
 * @ret xenrc           Xen status code
 */
static inline __attribute__ (( always_inline )) int
xenevent_send ( struct xen_hypervisor *xen, struct evtchn_send *send ) {

        return xen_hypercall_2 ( xen, __HYPERVISOR_event_channel_op,
                                 EVTCHNOP_send, virt_to_phys ( send ) );
}

/**
 * Allocate an unbound event channel
 *
 * @v xen               Xen hypervisor
 * @v alloc_unbound     Event descriptor
 * @ret xenrc           Xen status code
 */
static inline __attribute__ (( always_inline )) int
xenevent_alloc_unbound ( struct xen_hypervisor *xen,
                         struct evtchn_alloc_unbound *alloc_unbound ) {

        return xen_hypercall_2 ( xen, __HYPERVISOR_event_channel_op,
                                 EVTCHNOP_alloc_unbound,
                                 virt_to_phys ( alloc_unbound ) );
}

#endif /* _IPXE_XENEVENT_H */