diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/OvmfPkg/XenBusDxe/EventChannel.h | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/OvmfPkg/XenBusDxe/EventChannel.h')
| -rw-r--r-- | roms/edk2/OvmfPkg/XenBusDxe/EventChannel.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/roms/edk2/OvmfPkg/XenBusDxe/EventChannel.h b/roms/edk2/OvmfPkg/XenBusDxe/EventChannel.h new file mode 100644 index 000000000..793571fab --- /dev/null +++ b/roms/edk2/OvmfPkg/XenBusDxe/EventChannel.h @@ -0,0 +1,82 @@ +/** @file
+ Event Channel function declaration.
+
+ Copyright (C) 2014, Citrix Ltd.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef __XENBUS_EVENT_CHANNEL_H
+#define __XENBUS_EVENT_CHANNEL_H
+
+#include "XenBusDxe.h"
+
+#include <IndustryStandard/Xen/event_channel.h>
+
+/**
+ Send an event to the remote end of the channel whose local endpoint is Port.
+
+ @param Dev A pointer to XENBUS_DEVICE.
+ @param Port The port to notify.
+
+ @return Return 0 on success, or return the errno code from the hypercall.
+**/
+UINT32
+XenEventChannelNotify (
+ IN XENBUS_DEVICE *Dev,
+ IN evtchn_port_t Port
+ );
+
+/*
+ * XenBus protocol
+ */
+
+/**
+ Allocate a port that can be bind from domain DomainId.
+
+ @param This A pointer to the XENBUS_PROTOCOL.
+ @param DomainId The domain ID that can bind the newly allocated port.
+ @param Port A pointer to a evtchn_port_t that will contain the newly
+ allocated port.
+
+ @retval UINT32 The return value from the hypercall, 0 if success.
+**/
+UINT32
+EFIAPI
+XenBusEventChannelAllocate (
+ IN XENBUS_PROTOCOL *This,
+ IN domid_t DomainId,
+ OUT evtchn_port_t *Port
+ );
+
+/**
+ Send an event to the remote end of the channel whose local endpoint is Port.
+
+ @param This A pointer to the XENBUS_PROTOCOL.
+ @param Port Local port to the event from.
+
+ @retval UINT32 The return value from the hypercall, 0 if success.
+**/
+UINT32
+EFIAPI
+XenBusEventChannelNotify (
+ IN XENBUS_PROTOCOL *This,
+ IN evtchn_port_t Port
+ );
+
+/**
+ Close a local event channel Port.
+
+ @param This A pointer to the XENBUS_PROTOCOL.
+ @param Port The event channel to close.
+
+ @retval UINT32 The return value from the hypercall, 0 if success.
+**/
+UINT32
+EFIAPI
+XenBusEventChannelClose (
+ IN XENBUS_PROTOCOL *This,
+ IN evtchn_port_t Port
+ );
+
+#endif
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