mirror of https://github.com/acidanthera/audk.git
96 lines
4.1 KiB
C
96 lines
4.1 KiB
C
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/** @file
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This protocol provide registering and unregistering services to status code
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consumers while in DXE.
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Copyright (c) 2007 - 2009, Intel Corporation
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All rights reserved. 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 __REPORT_STATUS_CODE_HANDLER_PROTOCOL_H__
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#define __REPORT_STATUS_CODE_HANDLER_PROTOCOL_H__
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#define EFI_RSC_HANDLER_PROTOCOL_GUID \
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{ \
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0x86212936, 0xe76, 0x41c8, \
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0xa0, 0x3a, 0x2a, 0xf2, 0xfc, 0x1c, 0x39, 0xe2 \
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}
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typedef
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EFI_STATUS
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(EFIAPI *EFI_RSC_HANDLER_CALLBACK)(
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IN EFI_STATUS_CODE_TYPE CodeType,
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IN EFI_STATUS_CODE_VALUE Value,
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IN UINT32 Instance,
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IN EFI_GUID *CallerId,
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IN EFI_STATUS_CODE_DATA *Data
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);
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/**
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Register the callback function for ReportStatusCode() notification.
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When this function is called the function pointer is added to an internal list and any future calls to
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ReportStatusCode() will be forwarded to the Callback function. During the bootservices,
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this is the callback for which this service can be invoked. The report status code router
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will create an event such that the callback function is only invoked at the TPL for which it was
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registered. The entity that registers for the callback should also register for an event upon
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generation of exit boot services and invoke the unregister service.
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If the handler does not have a TPL dependency, it should register for a callback at TPL high. The
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router infrastructure will support making callbacks at runtime, but the caller for runtime invocation
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must meet the following criteria:
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1. must be a runtime driver type so that its memory is not reclaimed
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2. not unregister at exit boot services so that the router will still have its callback address
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3. the caller must be self-contained (eg. Not call out into any boot-service interfaces) and be
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runtime safe, in general.
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@param[in] Callback A pointer to a function of type EFI_RSC_HANDLER_CALLBACK that is called when
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a call to ReportStatusCode() occurs.
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@param[in] Tpl TPL at which callback can be safely invoked.
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@retval EFI_SUCCESS Function was successfully registered.
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@retval EFI_INVALID_PARAMETER The callback function was NULL.
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@retval EFI_OUT_OF_RESOURCES The internal buffer ran out of space. No more functions can be
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registered.
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@retval EFI_ALREADY_STARTED The function was already registered. It can’t be registered again.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_RSC_HANDLER_REGISTER)(
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IN EFI_RSC_HANDLER_CALLBACK Callback,
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IN EFI_TPL Tpl
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);
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/**
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Remove a previously registered callback function from the notification list.
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A callback function must be unregistered before it is deallocated. It is important that any registered
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callbacks that are not runtime complaint be unregistered when ExitBootServices() is called.
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@param[in] Callback A pointer to a function of type EFI_RSC_HANDLER_CALLBACK that is to be
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unregistered.
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@retval EFI_SUCCESS The function was successfully unregistered.
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@retval EFI_INVALID_PARAMETER The callback function was NULL.
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@retval EFI_NOT_FOUND The callback function was not found to be unregistered.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_RSC_HANDLER_UNREGISTER)(
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IN EFI_RSC_HANDLER_CALLBACK Callback
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);
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typedef struct {
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EFI_RSC_HANDLER_REGISTER Register;
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EFI_RSC_HANDLER_UNREGISTER Unregister;
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} EFI_RSC_HANDLER_PROTOCOL;
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extern EFI_GUID gEfiRscHandlerProtocolGuid;
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#endif // __REPORT_STATUS_CODE_HANDLER_H__
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