mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-10 14:23:31 +01:00
81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
/** @file
|
|
Event Channel function implementation.
|
|
|
|
Event channel are use to notify of an event that happened in a shared
|
|
structure for example.
|
|
|
|
Copyright (C) 2014, Citrix Ltd.
|
|
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
#include "EventChannel.h"
|
|
|
|
#include <Library/XenHypercallLib.h>
|
|
|
|
UINT32
|
|
XenEventChannelNotify (
|
|
IN XENBUS_DEVICE *Dev,
|
|
IN evtchn_port_t Port
|
|
)
|
|
{
|
|
INTN ReturnCode;
|
|
evtchn_send_t Send;
|
|
|
|
Send.port = Port;
|
|
ReturnCode = XenHypercallEventChannelOp (EVTCHNOP_send, &Send);
|
|
return (UINT32)ReturnCode;
|
|
}
|
|
|
|
UINT32
|
|
EFIAPI
|
|
XenBusEventChannelAllocate (
|
|
IN XENBUS_PROTOCOL *This,
|
|
IN domid_t DomainId,
|
|
OUT evtchn_port_t *Port
|
|
)
|
|
{
|
|
evtchn_alloc_unbound_t Parameter;
|
|
UINT32 ReturnCode;
|
|
|
|
Parameter.dom = DOMID_SELF;
|
|
Parameter.remote_dom = DomainId;
|
|
ReturnCode = (UINT32)XenHypercallEventChannelOp (
|
|
EVTCHNOP_alloc_unbound,
|
|
&Parameter
|
|
);
|
|
if (ReturnCode != 0) {
|
|
DEBUG ((DEBUG_ERROR, "ERROR: alloc_unbound failed with rc=%d", ReturnCode));
|
|
return ReturnCode;
|
|
}
|
|
|
|
*Port = Parameter.port;
|
|
return ReturnCode;
|
|
}
|
|
|
|
UINT32
|
|
EFIAPI
|
|
XenBusEventChannelNotify (
|
|
IN XENBUS_PROTOCOL *This,
|
|
IN evtchn_port_t Port
|
|
)
|
|
{
|
|
XENBUS_PRIVATE_DATA *Private;
|
|
|
|
Private = XENBUS_PRIVATE_DATA_FROM_THIS (This);
|
|
return XenEventChannelNotify (Private->Dev, Port);
|
|
}
|
|
|
|
UINT32
|
|
EFIAPI
|
|
XenBusEventChannelClose (
|
|
IN XENBUS_PROTOCOL *This,
|
|
IN evtchn_port_t Port
|
|
)
|
|
{
|
|
evtchn_close_t Close;
|
|
|
|
Close.port = Port;
|
|
return (UINT32)XenHypercallEventChannelOp (EVTCHNOP_close, &Close);
|
|
}
|