Add qemu 2.4.0

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

diff --git a/qemu/roms/ipxe/src/include/ipxe/xenevent.h b/qemu/roms/ipxe/src/include/ipxe/xenevent.h
new file mode 100644 (file)
index 0000000..1dd6a0c
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/xenevent.h
@@ -0,0 +1,59 @@
+#ifndef _IPXE_XENEVENT_H
+#define _IPXE_XENEVENT_H
+
+/** @file
+ *
+ * Xen events
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#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 */