From 1c3ac4b91efaa366d899cbe23451a0b2906d4d13 Mon Sep 17 00:00:00 2001 From: Jiewen Yao Date: Fri, 10 Mar 2017 11:45:32 +0800 Subject: [PATCH] MdeModulePkg/SmmCore: Add Context in SmiHandlerProfileUnregister. The reason is that we observe that a platform may use same Handler for different context. In order to support Unregister such handler, we have to input context information as well. Cc: Jeff Fan Cc: Feng Tian Cc: Star Zeng Cc: Bret Barkelew Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jiewen Yao Reviewed-by: Jeff Fan Reviewed-by: Feng Tian --- MdeModulePkg/Core/PiSmmCore/PiSmmCore.h | 8 +- .../Core/PiSmmCore/SmiHandlerProfile.c | 103 ++++++++++++++---- 2 files changed, 89 insertions(+), 22 deletions(-) diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h index 45b9d9758b..c12805a2dd 100644 --- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h +++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h @@ -1139,6 +1139,10 @@ SmiHandlerProfileRegisterHandler ( For the SmmChildDispatch protocol, the HandlerGuid must be the GUID of SmmChildDispatch protocol. @param Handler The SMI handler. + @param Context The context of the SMI handler. + If it is NOT NULL, it will be used to check what is registered. + @param ContextSize The size of the context in bytes. + If Context is NOT NULL, it will be used to check what is registered. @retval EFI_SUCCESS The original record is removed. @retval EFI_NOT_FOUND There is no record for the HandlerGuid and handler. @@ -1148,7 +1152,9 @@ EFIAPI SmiHandlerProfileUnregisterHandler ( IN SMI_HANDLER_PROFILE_PROTOCOL *This, IN EFI_GUID *HandlerGuid, - IN EFI_SMM_HANDLER_ENTRY_POINT2 Handler + IN EFI_SMM_HANDLER_ENTRY_POINT2 Handler, + IN VOID *Context, OPTIONAL + IN UINTN ContextSize OPTIONAL ); extern UINTN mFullSmramRangeCount; diff --git a/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c b/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c index f85c0f0e91..1e36039dd4 100644 --- a/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c +++ b/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c @@ -1088,6 +1088,40 @@ SmmCoreFindHardwareSmiEntry ( return SmiEntry; } +/** + Convert EFI_SMM_USB_REGISTER_CONTEXT to SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT. + + @param UsbContext A pointer to EFI_SMM_USB_REGISTER_CONTEXT + @param UsbContextSize The size of EFI_SMM_USB_REGISTER_CONTEXT in bytes + @param SmiHandlerUsbContextSize The size of SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT in bytes + + @return SmiHandlerUsbContext A pointer to SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT +**/ +SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT * +ConvertSmiHandlerUsbContext ( + IN EFI_SMM_USB_REGISTER_CONTEXT *UsbContext, + IN UINTN UsbContextSize, + OUT UINTN *SmiHandlerUsbContextSize + ) +{ + UINTN DevicePathSize; + SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *SmiHandlerUsbContext; + + ASSERT (UsbContextSize == sizeof(EFI_SMM_USB_REGISTER_CONTEXT)); + + DevicePathSize = GetDevicePathSize (UsbContext->Device); + SmiHandlerUsbContext = AllocatePool (sizeof (SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT) + DevicePathSize); + if (SmiHandlerUsbContext == NULL) { + *SmiHandlerUsbContextSize = 0; + return NULL; + } + SmiHandlerUsbContext->Type = UsbContext->Type; + SmiHandlerUsbContext->DevicePathSize = (UINT32)DevicePathSize; + CopyMem (SmiHandlerUsbContext + 1, UsbContext->Device, DevicePathSize); + *SmiHandlerUsbContextSize = sizeof (SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT) + DevicePathSize; + return SmiHandlerUsbContext; +} + /** This function is called by SmmChildDispatcher module to report a new SMI handler is registered, to SmmCore. @@ -1123,6 +1157,11 @@ SmiHandlerProfileRegisterHandler ( SMI_ENTRY *SmiEntry; LIST_ENTRY *List; + if (((ContextSize == 0) && (Context != NULL)) || + ((ContextSize != 0) && (Context == NULL))) { + return EFI_INVALID_PARAMETER; + } + SmiHandler = AllocateZeroPool (sizeof (SMI_HANDLER)); if (SmiHandler == NULL) { return EFI_OUT_OF_RESOURCES; @@ -1131,33 +1170,24 @@ SmiHandlerProfileRegisterHandler ( SmiHandler->Signature = SMI_HANDLER_SIGNATURE; SmiHandler->Handler = Handler; SmiHandler->CallerAddr = (UINTN)CallerAddress; - if (ContextSize != 0 && Context != NULL) { + SmiHandler->Context = Context; + SmiHandler->ContextSize = ContextSize; + + if (Context != NULL) { if (CompareGuid (HandlerGuid, &gEfiSmmUsbDispatch2ProtocolGuid)) { - EFI_SMM_USB_REGISTER_CONTEXT *UsbContext; - UINTN DevicePathSize; - SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *SmiHandlerUsbContext; - - ASSERT (ContextSize == sizeof(EFI_SMM_USB_REGISTER_CONTEXT)); - - UsbContext = (EFI_SMM_USB_REGISTER_CONTEXT *)Context; - DevicePathSize = GetDevicePathSize (UsbContext->Device); - SmiHandlerUsbContext = AllocatePool (sizeof (SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT) + DevicePathSize); - if (SmiHandlerUsbContext != NULL) { - SmiHandlerUsbContext->Type = UsbContext->Type; - SmiHandlerUsbContext->DevicePathSize = (UINT32)DevicePathSize; - CopyMem (SmiHandlerUsbContext + 1, UsbContext->Device, DevicePathSize); - SmiHandler->Context = SmiHandlerUsbContext; - } + SmiHandler->Context = ConvertSmiHandlerUsbContext (Context, ContextSize, &SmiHandler->ContextSize); } else { SmiHandler->Context = AllocateCopyPool (ContextSize, Context); } } - if (SmiHandler->Context != NULL) { - SmiHandler->ContextSize = ContextSize; + if (SmiHandler->Context == NULL) { + SmiHandler->ContextSize = 0; } SmiEntry = SmmCoreFindHardwareSmiEntry (HandlerGuid, TRUE); if (SmiEntry == NULL) { + FreePool (SmiHandler->Context); + FreePool (SmiHandler); return EFI_OUT_OF_RESOURCES; } @@ -1178,6 +1208,10 @@ SmiHandlerProfileRegisterHandler ( For the SmmChildDispatch protocol, the HandlerGuid must be the GUID of SmmChildDispatch protocol. @param Handler The SMI handler. + @param Context The context of the SMI handler. + If it is NOT NULL, it will be used to check what is registered. + @param ContextSize The size of the context in bytes. + If Context is NOT NULL, it will be used to check what is registered. @retval EFI_SUCCESS The original record is removed. @retval EFI_NOT_FOUND There is no record for the HandlerGuid and handler. @@ -1187,7 +1221,9 @@ EFIAPI SmiHandlerProfileUnregisterHandler ( IN SMI_HANDLER_PROFILE_PROTOCOL *This, IN EFI_GUID *HandlerGuid, - IN EFI_SMM_HANDLER_ENTRY_POINT2 Handler + IN EFI_SMM_HANDLER_ENTRY_POINT2 Handler, + IN VOID *Context, OPTIONAL + IN UINTN ContextSize OPTIONAL ) { LIST_ENTRY *Link; @@ -1195,21 +1231,46 @@ SmiHandlerProfileUnregisterHandler ( SMI_HANDLER *SmiHandler; SMI_ENTRY *SmiEntry; SMI_HANDLER *TargetSmiHandler; + VOID *SearchContext; + UINTN SearchContextSize; + + if (((ContextSize == 0) && (Context != NULL)) || + ((ContextSize != 0) && (Context == NULL))) { + return EFI_INVALID_PARAMETER; + } SmiEntry = SmmCoreFindHardwareSmiEntry (HandlerGuid, FALSE); if (SmiEntry == NULL) { return EFI_NOT_FOUND; } + SearchContext = Context; + SearchContextSize = ContextSize; + if (Context != NULL) { + if (CompareGuid (HandlerGuid, &gEfiSmmUsbDispatch2ProtocolGuid)) { + SearchContext = ConvertSmiHandlerUsbContext (Context, ContextSize, &SearchContextSize); + } + } + TargetSmiHandler = NULL; Head = &SmiEntry->SmiHandlers; for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) { SmiHandler = CR (Link, SMI_HANDLER, Link, SMI_HANDLER_SIGNATURE); if (SmiHandler->Handler == Handler) { - TargetSmiHandler = SmiHandler; - break; + if ((SearchContext == NULL) || + ((SearchContextSize == SmiHandler->ContextSize) && (CompareMem (SearchContext, SmiHandler->Context, SearchContextSize) == 0))) { + TargetSmiHandler = SmiHandler; + break; + } + } + } + + if (SearchContext != NULL) { + if (CompareGuid (HandlerGuid, &gEfiSmmUsbDispatch2ProtocolGuid)) { + FreePool (SearchContext); } } + if (TargetSmiHandler == NULL) { return EFI_NOT_FOUND; } -- 2.39.2