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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10403 6f19259b-4bc3-4df7-8a09-765794883524
145 lines
5.4 KiB
C
145 lines
5.4 KiB
C
/** @file
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The file defines the EFI Debugport protocol.
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This protocol is used by debug agent to communicate with the
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remote debug host.
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Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __DEBUG_PORT_H__
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#define __DEBUG_PORT_H__
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///
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/// DebugPortIo protocol {EBA4E8D2-3858-41EC-A281-2647BA9660D0}
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///
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#define EFI_DEBUGPORT_PROTOCOL_GUID \
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{ \
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0xEBA4E8D2, 0x3858, 0x41EC, {0xA2, 0x81, 0x26, 0x47, 0xBA, 0x96, 0x60, 0xD0 } \
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}
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extern EFI_GUID gEfiDebugPortProtocolGuid;
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typedef struct _EFI_DEBUGPORT_PROTOCOL EFI_DEBUGPORT_PROTOCOL;
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//
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// DebugPort member functions
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//
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/**
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Resets the debugport.
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@param This A pointer to the EFI_DEBUGPORT_PROTOCOL instance.
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@retval EFI_SUCCESS The debugport device was reset and is in usable state.
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@retval EFI_DEVICE_ERROR The debugport device could not be reset and is unusable.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DEBUGPORT_RESET)(
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IN EFI_DEBUGPORT_PROTOCOL *This
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);
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/**
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Writes data to the debugport.
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@param This A pointer to the EFI_DEBUGPORT_PROTOCOL instance.
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@param Timeout The number of microseconds to wait before timing out a write operation.
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@param BufferSize On input, the requested number of bytes of data to write. On output, the
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number of bytes of data actually written.
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@param Buffer A pointer to a buffer containing the data to write.
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@retval EFI_SUCCESS The data was written.
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@retval EFI_DEVICE_ERROR The device reported an error.
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@retval EFI_TIMEOUT The data write was stopped due to a timeout.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DEBUGPORT_WRITE)(
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IN EFI_DEBUGPORT_PROTOCOL *This,
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IN UINT32 Timeout,
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IN OUT UINTN *BufferSize,
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IN VOID *Buffer
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);
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/**
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Reads data from the debugport.
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@param This A pointer to the EFI_DEBUGPORT_PROTOCOL instance.
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@param Timeout The number of microseconds to wait before timing out a read operation.
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@param BufferSize On input, the requested number of bytes of data to read. On output, the
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number of bytes of data actually number of bytes
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of data read and returned in Buffer.
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@param Buffer A pointer to a buffer into which the data read will be saved.
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@retval EFI_SUCCESS The data was read.
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@retval EFI_DEVICE_ERROR The device reported an error.
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@retval EFI_TIMEOUT The operation was stopped due to a timeout or overrun.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DEBUGPORT_READ)(
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IN EFI_DEBUGPORT_PROTOCOL *This,
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IN UINT32 Timeout,
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IN OUT UINTN *BufferSize,
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OUT VOID *Buffer
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);
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/**
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Checks to see if any data is available to be read from the debugport device.
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@param This A pointer to the EFI_DEBUGPORT_PROTOCOL instance.
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@retval EFI_SUCCESS At least one byte of data is available to be read.
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@retval EFI_DEVICE_ERROR The debugport device is not functioning correctly.
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@retval EFI_NOT_READY No data is available to be read.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DEBUGPORT_POLL)(
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IN EFI_DEBUGPORT_PROTOCOL *This
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);
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///
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/// This protocol provides the communication link between the debug agent and the remote host.
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///
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struct _EFI_DEBUGPORT_PROTOCOL {
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EFI_DEBUGPORT_RESET Reset;
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EFI_DEBUGPORT_WRITE Write;
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EFI_DEBUGPORT_READ Read;
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EFI_DEBUGPORT_POLL Poll;
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};
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//
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// DEBUGPORT variable definitions...
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//
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#define EFI_DEBUGPORT_VARIABLE_NAME L"DEBUGPORT"
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#define EFI_DEBUGPORT_VARIABLE_GUID EFI_DEBUGPORT_PROTOCOL_GUID
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#define gEfiDebugPortVariableGuid gEfiDebugPortProtocolGuid
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//
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// DebugPort device path definitions...
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//
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#define DEVICE_PATH_MESSAGING_DEBUGPORT EFI_DEBUGPORT_PROTOCOL_GUID
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#define gEfiDebugPortDevicePathGuid gEfiDebugPortProtocolGuid
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typedef struct {
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EFI_DEVICE_PATH_PROTOCOL Header;
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EFI_GUID Guid;
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} DEBUGPORT_DEVICE_PATH;
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#endif
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