diff options
Diffstat (limited to 'MdeModulePkg/Universal/ReportStatusCodeRouter/Smm/ReportStatusCodeRouterCommon.c')
| -rw-r--r-- | MdeModulePkg/Universal/ReportStatusCodeRouter/Smm/ReportStatusCodeRouterCommon.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/MdeModulePkg/Universal/ReportStatusCodeRouter/Smm/ReportStatusCodeRouterCommon.c b/MdeModulePkg/Universal/ReportStatusCodeRouter/Smm/ReportStatusCodeRouterCommon.c new file mode 100644 index 0000000000..c4843a745d --- /dev/null +++ b/MdeModulePkg/Universal/ReportStatusCodeRouter/Smm/ReportStatusCodeRouterCommon.c @@ -0,0 +1,228 @@ +/** @file
+ Report Status Code Router Driver which produces SMM Report Stataus Code Handler Protocol
+ and SMM Status Code Protocol.
+
+ Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "ReportStatusCodeRouterCommon.h"
+
+LIST_ENTRY mCallbackListHead = INITIALIZE_LIST_HEAD_VARIABLE (mCallbackListHead);
+
+//
+// Report operation nest status.
+// If it is set, then the report operation has nested.
+//
+UINT32 mStatusCodeNestStatus = 0;
+
+EFI_MM_STATUS_CODE_PROTOCOL mSmmStatusCodeProtocol = {
+ ReportDispatcher
+};
+
+EFI_MM_RSC_HANDLER_PROTOCOL mSmmRscHandlerProtocol = {
+ Register,
+ Unregister
+ };
+
+/**
+ Register the callback function for ReportStatusCode() notification.
+
+ When this function is called the function pointer is added to an internal list and any future calls to
+ ReportStatusCode() will be forwarded to the Callback function.
+
+ @param[in] Callback A pointer to a function of type EFI_PEI_RSC_HANDLER_CALLBACK that is called
+ when a call to ReportStatusCode() occurs.
+
+ @retval EFI_SUCCESS Function was successfully registered.
+ @retval EFI_INVALID_PARAMETER The callback function was NULL.
+ @retval EFI_OUT_OF_RESOURCES The internal buffer ran out of space. No more functions can be
+ registered.
+ @retval EFI_ALREADY_STARTED The function was already registered. It can't be registered again.
+
+**/
+EFI_STATUS
+EFIAPI
+Register (
+ IN EFI_MM_RSC_HANDLER_CALLBACK Callback
+ )
+{
+ LIST_ENTRY *Link;
+ MM_RSC_HANDLER_CALLBACK_ENTRY *CallbackEntry;
+
+ if (Callback == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ for (Link = GetFirstNode (&mCallbackListHead); !IsNull (&mCallbackListHead, Link); Link = GetNextNode (&mCallbackListHead, Link)) {
+ CallbackEntry = CR (Link, MM_RSC_HANDLER_CALLBACK_ENTRY, Node, MM_RSC_HANDLER_CALLBACK_ENTRY_SIGNATURE);
+ if (CallbackEntry->RscHandlerCallback == Callback) {
+ //
+ // If the function was already registered. It can't be registered again.
+ //
+ return EFI_ALREADY_STARTED;
+ }
+ }
+
+ CallbackEntry = (MM_RSC_HANDLER_CALLBACK_ENTRY *)AllocatePool (sizeof (MM_RSC_HANDLER_CALLBACK_ENTRY));
+ ASSERT (CallbackEntry != NULL);
+
+ CallbackEntry->Signature = MM_RSC_HANDLER_CALLBACK_ENTRY_SIGNATURE;
+ CallbackEntry->RscHandlerCallback = Callback;
+
+ InsertTailList (&mCallbackListHead, &CallbackEntry->Node);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Remove a previously registered callback function from the notification list.
+
+ ReportStatusCode() messages will no longer be forwarded to the Callback function.
+
+ @param[in] Callback A pointer to a function of type EFI_PEI_RSC_HANDLER_CALLBACK that is to be
+ unregistered.
+
+ @retval EFI_SUCCESS The function was successfully unregistered.
+ @retval EFI_INVALID_PARAMETER The callback function was NULL.
+ @retval EFI_NOT_FOUND The callback function was not found to be unregistered.
+
+**/
+EFI_STATUS
+EFIAPI
+Unregister (
+ IN EFI_MM_RSC_HANDLER_CALLBACK Callback
+ )
+{
+ LIST_ENTRY *Link;
+ MM_RSC_HANDLER_CALLBACK_ENTRY *CallbackEntry;
+
+ if (Callback == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ for (Link = GetFirstNode (&mCallbackListHead); !IsNull (&mCallbackListHead, Link); Link = GetNextNode (&mCallbackListHead, Link)) {
+ CallbackEntry = CR (Link, MM_RSC_HANDLER_CALLBACK_ENTRY, Node, MM_RSC_HANDLER_CALLBACK_ENTRY_SIGNATURE);
+ if (CallbackEntry->RscHandlerCallback == Callback) {
+ //
+ // If the function is found in list, delete it and return.
+ //
+ RemoveEntryList (&CallbackEntry->Node);
+ FreePool (CallbackEntry);
+ return EFI_SUCCESS;
+ }
+ }
+
+ return EFI_NOT_FOUND;
+}
+
+
+/**
+ Provides an interface that a software module can call to report a status code.
+
+ @param This EFI_MM_STATUS_CODE_PROTOCOL instance.
+ @param CodeType Indicates the type of status code being reported.
+ @param Value Describes the current status of a hardware or software entity.
+ This included information about the class and subclass that is used to
+ classify the entity as well as an operation.
+ @param Instance The enumeration of a hardware or software entity within
+ the system. Valid instance numbers start with 1.
+ @param CallerId This optional parameter may be used to identify the caller.
+ This parameter allows the status code driver to apply different rules to
+ different callers.
+ @param Data This optional parameter may be used to pass additional data.
+
+ @retval EFI_SUCCESS The function completed successfully
+ @retval EFI_DEVICE_ERROR The function should not be completed due to a device error.
+
+**/
+EFI_STATUS
+EFIAPI
+ReportDispatcher (
+ IN CONST EFI_MM_STATUS_CODE_PROTOCOL *This,
+ IN EFI_STATUS_CODE_TYPE CodeType,
+ IN EFI_STATUS_CODE_VALUE Value,
+ IN UINT32 Instance,
+ IN CONST EFI_GUID *CallerId,
+ IN EFI_STATUS_CODE_DATA *Data OPTIONAL
+ )
+{
+ LIST_ENTRY *Link;
+ MM_RSC_HANDLER_CALLBACK_ENTRY *CallbackEntry;
+
+ //
+ // Use atom operation to avoid the reentant of report.
+ // If current status is not zero, then the function is reentrancy.
+ //
+ if (InterlockedCompareExchange32 (&mStatusCodeNestStatus, 0, 1) == 1) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ for (Link = GetFirstNode (&mCallbackListHead); !IsNull (&mCallbackListHead, Link);) {
+ CallbackEntry = CR (Link, MM_RSC_HANDLER_CALLBACK_ENTRY, Node, MM_RSC_HANDLER_CALLBACK_ENTRY_SIGNATURE);
+ //
+ // The handler may remove itself, so get the next handler in advance.
+ //
+ Link = GetNextNode (&mCallbackListHead, Link);
+ CallbackEntry->RscHandlerCallback (
+ CodeType,
+ Value,
+ Instance,
+ (EFI_GUID*)CallerId,
+ Data
+ );
+
+ }
+
+ //
+ // Restore the nest status of report
+ //
+ InterlockedCompareExchange32 (&mStatusCodeNestStatus, 1, 0);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Entry point of Generic Status Code Driver.
+
+ This function is the common entry point of MM Status Code Router.
+ It produces MM Report Status Code Handler and Status Code protocol.
+
+ @retval EFI_SUCCESS The entry point is executed successfully.
+
+**/
+EFI_STATUS
+GenericStatusCodeCommonEntry (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ EFI_HANDLE Handle;
+
+ Handle = NULL;
+
+ //
+ // Install SmmRscHandler Protocol
+ //
+ Status = gMmst->MmInstallProtocolInterface (
+ &Handle,
+ &gEfiMmRscHandlerProtocolGuid,
+ EFI_NATIVE_INTERFACE,
+ &mSmmRscHandlerProtocol
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Install SmmStatusCode Protocol
+ //
+ Status = gMmst->MmInstallProtocolInterface (
+ &Handle,
+ &gEfiMmStatusCodeProtocolGuid,
+ EFI_NATIVE_INTERFACE,
+ &mSmmStatusCodeProtocol
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return EFI_SUCCESS;
+}
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