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137 lines
5.4 KiB
C
137 lines
5.4 KiB
C
/** @file
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Internal include file for Report Status Code Router Driver.
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Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __REPORT_STATUS_CODE_ROUTER_RUNTIME_DXE_H__
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#define __REPORT_STATUS_CODE_ROUTER_RUNTIME_DXE_H__
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#include <Protocol/ReportStatusCodeHandler.h>
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#include <Protocol/StatusCode.h>
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#include <Guid/EventGroup.h>
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#include <Library/BaseLib.h>
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#include <Library/SynchronizationLib.h>
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#include <Library/DebugLib.h>
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#include <Library/HobLib.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/UefiRuntimeLib.h>
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#include "Library/UefiLib.h"
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#define RSC_HANDLER_CALLBACK_ENTRY_SIGNATURE SIGNATURE_32 ('r', 'h', 'c', 'e')
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typedef struct {
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UINTN Signature;
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EFI_RSC_HANDLER_CALLBACK RscHandlerCallback;
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EFI_TPL Tpl;
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EFI_EVENT Event;
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EFI_PHYSICAL_ADDRESS StatusCodeDataBuffer;
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UINTN BufferSize;
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EFI_PHYSICAL_ADDRESS EndPointer;
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LIST_ENTRY Node;
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} RSC_HANDLER_CALLBACK_ENTRY;
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typedef struct {
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EFI_STATUS_CODE_TYPE Type;
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EFI_STATUS_CODE_VALUE Value;
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UINT32 Instance;
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UINT32 Reserved;
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EFI_GUID CallerId;
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EFI_STATUS_CODE_DATA Data;
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} RSC_DATA_ENTRY;
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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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EFI_STATUS
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EFIAPI
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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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EFI_STATUS
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EFIAPI
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Unregister (
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IN EFI_RSC_HANDLER_CALLBACK Callback
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);
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/**
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Provides an interface that a software module can call to report a status code.
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@param Type Indicates the type of status code being reported.
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@param Value Describes the current status of a hardware or software entity.
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This included information about the class and subclass that is used to
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classify the entity as well as an operation.
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@param Instance The enumeration of a hardware or software entity within
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the system. Valid instance numbers start with 1.
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@param CallerId This optional parameter may be used to identify the caller.
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This parameter allows the status code driver to apply different rules to
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different callers.
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@param Data This optional parameter may be used to pass additional data.
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_DEVICE_ERROR The function should not be completed due to a device error.
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**/
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EFI_STATUS
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EFIAPI
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ReportDispatcher (
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IN EFI_STATUS_CODE_TYPE Type,
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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 OPTIONAL,
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IN EFI_STATUS_CODE_DATA *Data OPTIONAL
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);
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#endif
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