* [Patch v4 0/2] Enable new MM MP protocol
@ 2019-07-08 14:01 Dong, Eric
2019-07-08 14:01 ` [Patch 1/2] MdePkg: Add new MM MP Protocol definition Dong, Eric
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Dong, Eric @ 2019-07-08 14:01 UTC (permalink / raw)
To: devel; +Cc: Ray Ni, Laszlo Ersek
V4 changes:
1. Use link list to save the used tokens.
v3 changes:
1. Fix Token clean up too early caused CheckProcedure return error.
https://bugzilla.tianocore.org/show_bug.cgi?id=1937
PI spec added a new protocol named MM MP protocol. This protocol allows for better remote queuing of execution of procedures on an AP.
This extends the existing procedures to allow:
1. A function to be called in blocking and non-blocking manner explicitly 2. Allow broadcasts.
3. Allow execution of a procedure when a processor powers up.
This patch serial enable this new protocol.
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Eric Dong (2):
MdePkg: Add new MM MP Protocol definition.
UefiCpuPkg/PiSmmCpuDxeSmm: Enable MM MP Protocol.
MdePkg/Include/Pi/PiMultiPhase.h | 16 +
MdePkg/Include/Protocol/MmMp.h | 333 +++++++++++
MdePkg/MdePkg.dec | 3 +
UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c | 558 ++++++++++++++++++-
UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c | 16 +
UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h | 175 +++++-
UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf | 3 +
UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c | 376 +++++++++++++
UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h | 286 ++++++++++
9 files changed, 1744 insertions(+), 22 deletions(-)
create mode 100644 MdePkg/Include/Protocol/MmMp.h
create mode 100644 UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c
create mode 100644 UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h
--
2.21.0.windows.1
^ permalink raw reply [flat|nested] 5+ messages in thread* [Patch 1/2] MdePkg: Add new MM MP Protocol definition. 2019-07-08 14:01 [Patch v4 0/2] Enable new MM MP protocol Dong, Eric @ 2019-07-08 14:01 ` Dong, Eric 2019-07-08 14:01 ` [Patch v4 2/2] UefiCpuPkg/PiSmmCpuDxeSmm: Enable MM MP Protocol Dong, Eric 2019-07-08 17:02 ` [Patch v4 0/2] Enable new MM MP protocol Laszlo Ersek 2 siblings, 0 replies; 5+ messages in thread From: Dong, Eric @ 2019-07-08 14:01 UTC (permalink / raw) To: devel; +Cc: Ray Ni, Laszlo Ersek REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1937 EFI MM MP Protocol is defined in the PI 1.5 specification. The MM MP protocol provides a set of functions to allow execution of procedures on processors that have entered MM. This protocol has the following properties: 1. The caller can invoke execution of a procedure on a processor, other than the caller, that has also entered MM. Supports blocking and non-blocking modes of operation. 2. The caller can invoke a procedure on multiple processors. Supports blocking and non-blocking modes of operation. Cc: Ray Ni <ray.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Eric Dong <eric.dong@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> --- MdePkg/Include/Pi/PiMultiPhase.h | 16 ++ MdePkg/Include/Protocol/MmMp.h | 333 +++++++++++++++++++++++++++++++ MdePkg/MdePkg.dec | 3 + 3 files changed, 352 insertions(+) create mode 100644 MdePkg/Include/Protocol/MmMp.h diff --git a/MdePkg/Include/Pi/PiMultiPhase.h b/MdePkg/Include/Pi/PiMultiPhase.h index eb12527767..a5056799e1 100644 --- a/MdePkg/Include/Pi/PiMultiPhase.h +++ b/MdePkg/Include/Pi/PiMultiPhase.h @@ -176,4 +176,20 @@ VOID IN OUT VOID *Buffer ); +/** + The function prototype for invoking a function on an Application Processor. + + This definition is used by the UEFI MM MP Serices Protocol. + + @param[in] ProcedureArgument The pointer to private data buffer. + + @retval EFI_SUCCESS Excutive the procedure successfully + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_AP_PROCEDURE2)( + IN VOID *ProcedureArgument +); + #endif diff --git a/MdePkg/Include/Protocol/MmMp.h b/MdePkg/Include/Protocol/MmMp.h new file mode 100644 index 0000000000..beace1386c --- /dev/null +++ b/MdePkg/Include/Protocol/MmMp.h @@ -0,0 +1,333 @@ +/** @file + EFI MM MP Protocol is defined in the PI 1.5 specification. + + The MM MP protocol provides a set of functions to allow execution of procedures on processors that + have entered MM. This protocol has the following properties: + 1. The caller can only invoke execution of a procedure on a processor, other than the caller, that + has also entered MM. + 2. It is possible to invoke a procedure on multiple processors. Supports blocking and non-blocking + modes of operation. + + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#ifndef _MM_MP_H_ +#define _MM_MP_H_ + +#include <Pi/PiMmCis.h> + +#define EFI_MM_MP_PROTOCOL_GUID \ + { \ + 0x5d5450d7, 0x990c, 0x4180, {0xa8, 0x3, 0x8e, 0x63, 0xf0, 0x60, 0x83, 0x7 } \ + } + +// +// Revision definition. +// +#define EFI_MM_MP_PROTOCOL_REVISION 0x00 + +// +// Attribute flags +// +#define EFI_MM_MP_TIMEOUT_SUPPORTED 0x01 + +// +// Completion token +// +typedef VOID* MM_COMPLETION; + +typedef struct { + MM_COMPLETION Completion; + EFI_STATUS Status; +} MM_DISPATCH_COMPLETION_TOKEN; + +typedef struct _EFI_MM_MP_PROTOCOL EFI_MM_MP_PROTOCOL; + +/** + Service to retrieves the number of logical processor in the platform. + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[out] NumberOfProcessors Pointer to the total number of logical processors in the system, + including the BSP and all APs. + + @retval EFI_SUCCESS The number of processors was retrieved successfully + @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_MM_GET_NUMBER_OF_PROCESSORS) ( + IN CONST EFI_MM_MP_PROTOCOL *This, + OUT UINTN *NumberOfProcessors +); + + +/** + This service allows the caller to invoke a procedure one of the application processors (AP). This + function uses an optional token parameter to support blocking and non-blocking modes. If the token + is passed into the call, the function will operate in a non-blocking fashion and the caller can + check for completion with CheckOnProcedure or WaitForProcedure. + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Procedure A pointer to the procedure to be run on the designated target + AP of the system. Type EFI_AP_PROCEDURE2 is defined below in + related definitions. + @param[in] CpuNumber The zero-based index of the processor number of the target + AP, on which the code stream is supposed to run. If the number + points to the calling processor then it will not run the + supplied code. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for this AP to + finish execution of Procedure, either for blocking or + non-blocking mode. Zero means infinity. If the timeout + expires before this AP returns from Procedure, then Procedure + on the AP is terminated. If the timeout expires in blocking + mode, the call returns EFI_TIMEOUT. If the timeout expires + in non-blocking mode, the timeout determined can be through + CheckOnProcedure or WaitForProcedure. + Note that timeout support is optional. Whether an + implementation supports this feature, can be determined via + the Attributes data member. + @param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code + that is run by the AP. It is an optional common mailbox + between APs and the caller to share information. + @param[in,out] Token This is parameter is broken into two components: + 1.Token->Completion is an optional parameter that allows the + caller to execute the procedure in a blocking or non-blocking + fashion. If it is NULL the call is blocking, and the call will + not return until the AP has completed the procedure. If the + token is not NULL, the call will return immediately. The caller + can check whether the procedure has completed with + CheckOnProcedure or WaitForProcedure. + 2.Token->Status The implementation updates the address pointed + at by this variable with the status code returned by Procedure + when it completes execution on the target AP, or with EFI_TIMEOUT + if the Procedure fails to complete within the optional timeout. + The implementation will update this variable with EFI_NOT_READY + prior to starting Procedure on the target AP. + @param[in,out] CPUStatus This optional pointer may be used to get the status code returned + by Procedure when it completes execution on the target AP, or with + EFI_TIMEOUT if the Procedure fails to complete within the optional + timeout. The implementation will update this variable with + EFI_NOT_READY prior to starting Procedure on the target AP. + + @retval EFI_SUCCESS In the blocking case, this indicates that Procedure has completed + execution on the target AP. + In the non-blocking case this indicates that the procedure has + been successfully scheduled for execution on the target AP. + @retval EFI_INVALID_PARAMETER The input arguments are out of range. Either the target AP is the + caller of the function, or the Procedure or Token is NULL + @retval EFI_NOT_READY If the target AP is busy executing another procedure + @retval EFI_ALREADY_STARTED Token is already in use for another procedure + @retval EFI_TIMEOUT In blocking mode, the timeout expired before the specified AP + has finished +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_MM_DISPATCH_PROCEDURE) ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN EFI_AP_PROCEDURE2 Procedure, + IN UINTN CpuNumber, + IN UINTN TimeoutInMicroseconds, + IN OUT VOID *ProcedureArguments OPTIONAL, + IN OUT MM_COMPLETION *Token, + IN OUT EFI_STATUS *CPUStatus +); + +/** + This service allows the caller to invoke a procedure on all running application processors (AP) + except the caller. This function uses an optional token parameter to support blocking and + nonblocking modes. If the token is passed into the call, the function will operate in a non-blocking + fashion and the caller can check for completion with CheckOnProcedure or WaitForProcedure. + + It is not necessary for the implementation to run the procedure on every processor on the platform. + Processors that are powered down in such a way that they cannot respond to interrupts, may be + excluded from the broadcast. + + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Procedure A pointer to the code stream to be run on the APs that have + entered MM. Type EFI_AP_PROCEDURE is defined below in related + definitions. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for the APs to finish + execution of Procedure, either for blocking or non-blocking mode. + Zero means infinity. If the timeout expires before all APs return + from Procedure, then Procedure on the failed APs is terminated. If + the timeout expires in blocking mode, the call returns EFI_TIMEOUT. + If the timeout expires in non-blocking mode, the timeout determined + can be through CheckOnProcedure or WaitForProcedure. + Note that timeout support is optional. Whether an implementation + supports this feature can be determined via the Attributes data + member. + @param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code + that is run by the AP. It is an optional common mailbox + between APs and the caller to share information. + @param[in,out] Token This is parameter is broken into two components: + 1.Token->Completion is an optional parameter that allows the + caller to execute the procedure in a blocking or non-blocking + fashion. If it is NULL the call is blocking, and the call will + not return until the AP has completed the procedure. If the + token is not NULL, the call will return immediately. The caller + can check whether the procedure has completed with + CheckOnProcedure or WaitForProcedure. + 2.Token->Status The implementation updates the address pointed + at by this variable with the status code returned by Procedure + when it completes execution on the target AP, or with EFI_TIMEOUT + if the Procedure fails to complete within the optional timeout. + The implementation will update this variable with EFI_NOT_READY + prior to starting Procedure on the target AP + @param[in,out] CPUStatus This optional pointer may be used to get the individual status + returned by every AP that participated in the broadcast. This + parameter if used provides the base address of an array to hold + the EFI_STATUS value of each AP in the system. The size of the + array can be ascertained by the GetNumberOfProcessors function. + As mentioned above, the broadcast may not include every processor + in the system. Some implementations may exclude processors that + have been powered down in such a way that they are not responsive + to interrupts. Additionally the broadcast excludes the processor + which is making the BroadcastProcedure call. For every excluded + processor, the array entry must contain a value of EFI_NOT_STARTED + + @retval EFI_SUCCESS In the blocking case, this indicates that Procedure has completed + execution on the APs. In the non-blocking case this indicates that + the procedure has been successfully scheduled for execution on the + APs. + @retval EFI_INVALID_PARAMETER Procedure or Token is NULL. + @retval EFI_NOT_READY If a target AP is busy executing another procedure. + @retval EFI_TIMEOUT In blocking mode, the timeout expired before all enabled APs have + finished. + @retval EFI_ALREADY_STARTED Before the AP procedure associated with the Token is finished, the + same Token cannot be used to dispatch or broadcast another procedure. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_MM_BROADCAST_PROCEDURE) ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN EFI_AP_PROCEDURE2 Procedure, + IN UINTN TimeoutInMicroseconds, + IN OUT VOID *ProcedureArguments OPTIONAL, + IN OUT MM_COMPLETION *Token, + IN OUT EFI_STATUS *CPUStatus +); + + +/** + This service allows the caller to set a startup procedure that will be executed when an AP powers + up from a state where core configuration and context is lost. The procedure is execution has the + following properties: + 1. The procedure executes before the processor is handed over to the operating system. + 2. All processors execute the same startup procedure. + 3. The procedure may run in parallel with other procedures invoked through the functions in this + protocol, or with processors that are executing an MM handler or running in the operating system. + + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Procedure A pointer to the code stream to be run on the designated target AP + of the system. Type EFI_AP_PROCEDURE is defined below in Volume 2 + with the related definitions of + EFI_MP_SERVICES_PROTOCOL.StartupAllAPs. + If caller may pass a value of NULL to deregister any existing + startup procedure. + @param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code that is + run by the AP. It is an optional common mailbox between APs and + the caller to share information + + @retval EFI_SUCCESS The Procedure has been set successfully. + @retval EFI_INVALID_PARAMETER The Procedure is NULL. +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_MM_SET_STARTUP_PROCEDURE) ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN EFI_AP_PROCEDURE Procedure, + IN OUT VOID *ProcedureArguments OPTIONAL +); + +/** + When non-blocking execution of a procedure on an AP is invoked with DispatchProcedure, + via the use of a token, this function can be used to check for completion of the procedure on the AP. + The function takes the token that was passed into the DispatchProcedure call. If the procedure + is complete, and therefore it is now possible to run another procedure on the same AP, this function + returns EFI_SUCESS. In this case the status returned by the procedure that executed on the AP is + returned in the token's Status field. If the procedure has not yet completed, then this function + returns EFI_NOT_READY. + + When a non-blocking execution of a procedure is invoked with BroadcastProcedure, via the + use of a token, this function can be used to check for completion of the procedure on all the + broadcast APs. The function takes the token that was passed into the BroadcastProcedure + call. If the procedure is complete on all broadcast APs this function returns EFI_SUCESS. In this + case the Status field in the token passed into the function reflects the overall result of the + invocation, which may be EFI_SUCCESS, if all executions succeeded, or the first observed failure. + If the procedure has not yet completed on the broadcast APs, the function returns + EFI_NOT_READY. + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Token This parameter describes the token that was passed into + DispatchProcedure or BroadcastProcedure. + + @retval EFI_SUCCESS Procedure has completed. + @retval EFI_NOT_READY The Procedure has not completed. + @retval EFI_INVALID_PARAMETER Token or Token->Completion is NULL + @retval EFI_NOT_FOUND Token is not currently in use for a non-blocking call + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_CHECK_FOR_PROCEDURE) ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN MM_COMPLETION Token +); + +/** + When a non-blocking execution of a procedure on an AP is invoked via DispatchProcedure, + this function will block the caller until the remote procedure has completed on the designated AP. + The non-blocking procedure invocation is identified by the Token parameter, which must match the + token that used when DispatchProcedure was called. Upon completion the status returned by + the procedure that executed on the AP is used to update the token's Status field. + + When a non-blocking execution of a procedure on an AP is invoked via BroadcastProcedure + this function will block the caller until the remote procedure has completed on all of the APs that + entered MM. The non-blocking procedure invocation is identified by the Token parameter, which + must match the token that used when BroadcastProcedure was called. Upon completion the + overall status returned by the procedures that executed on the broadcast AP is used to update the + token's Status field. The overall status may be EFI_SUCCESS, if all executions succeeded, or the + first observed failure. + + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Token This parameter describes the token that was passed into + DispatchProcedure or BroadcastProcedure. + + @retval EFI_SUCCESS Procedure has completed. + @retval EFI_INVALID_PARAMETER Token or Token->Completion is NULL + @retval EFI_NOT_FOUND Token is not currently in use for a non-blocking call + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_WAIT_FOR_PROCEDURE) ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN MM_COMPLETION Token +); + + + +/// +/// The MM MP protocol provides a set of functions to allow execution of procedures on processors that +/// have entered MM. +/// +struct _EFI_MM_MP_PROTOCOL { + UINT32 Revision; + UINT32 Attributes; + EFI_MM_GET_NUMBER_OF_PROCESSORS GetNumberOfProcessors; + EFI_MM_DISPATCH_PROCEDURE DispatchProcedure; + EFI_MM_BROADCAST_PROCEDURE BroadcastProcedure; + EFI_MM_SET_STARTUP_PROCEDURE SetStartupProcedure; + EFI_CHECK_FOR_PROCEDURE CheckForProcedure; + EFI_WAIT_FOR_PROCEDURE WaitForProcedure; +}; + +extern EFI_GUID gEfiMmMpProtocolGuid; + +#endif diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec index 6c563375ee..b382efd578 100644 --- a/MdePkg/MdePkg.dec +++ b/MdePkg/MdePkg.dec @@ -1167,6 +1167,9 @@ # Protocols defined in PI 1.5. # + ## Include/Protocol/MmMp.h + gEfiMmMpProtocolGuid = { 0x5d5450d7, 0x990c, 0x4180, { 0xa8, 0x3, 0x8e, 0x63, 0xf0, 0x60, 0x83, 0x7 }} + ## Include/Protocol/MmEndOfDxe.h gEfiMmEndOfDxeProtocolGuid = { 0x24e70042, 0xd5c5, 0x4260, { 0x8c, 0x39, 0xa, 0xd3, 0xaa, 0x32, 0xe9, 0x3d }} -- 2.21.0.windows.1 ^ permalink raw reply related [flat|nested] 5+ messages in thread
* [Patch v4 2/2] UefiCpuPkg/PiSmmCpuDxeSmm: Enable MM MP Protocol. 2019-07-08 14:01 [Patch v4 0/2] Enable new MM MP protocol Dong, Eric 2019-07-08 14:01 ` [Patch 1/2] MdePkg: Add new MM MP Protocol definition Dong, Eric @ 2019-07-08 14:01 ` Dong, Eric 2019-07-09 5:51 ` Ni, Ray 2019-07-08 17:02 ` [Patch v4 0/2] Enable new MM MP protocol Laszlo Ersek 2 siblings, 1 reply; 5+ messages in thread From: Dong, Eric @ 2019-07-08 14:01 UTC (permalink / raw) To: devel; +Cc: Ray Ni, Laszlo Ersek v4 changes: 1. Use link list to save the token info. v3 changes: 1. Fix Token clean up too early caused CheckProcedure return error. v2 changes: 1. Remove some duplicated global variables. 2. Enhance token design to support multiple task trig for different APs at the same time. V1 changes: REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1937 Add MM Mp Protocol in PiSmmCpuDxeSmm driver. Cc: Ray Ni <ray.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Eric Dong <eric.dong@intel.com> --- UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c | 558 ++++++++++++++++++- UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c | 16 + UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h | 175 +++++- UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf | 3 + UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c | 376 +++++++++++++ UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h | 286 ++++++++++ 6 files changed, 1392 insertions(+), 22 deletions(-) create mode 100644 UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c create mode 100644 UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c index 64fb4d6344..8652ae1696 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c @@ -22,6 +22,8 @@ UINTN mSemaphoreSize; SPIN_LOCK *mPFLock = NULL; SMM_CPU_SYNC_MODE mCpuSmmSyncMode; BOOLEAN mMachineCheckSupported = FALSE; +PROCEDURE_WRAPPER *mApWrapperFunc; +LIST_ENTRY gTokenList; /** Performs an atomic compare exchange operation to get semaphore. @@ -347,6 +349,128 @@ ReplaceOSMtrrs ( MtrrSetAllMtrrs (&gSmiMtrrs); } +/** + Wheck whether task has been finished by all APs. + + @param BlockMode Whether did it in block mode or non-block mode. + + @retval TRUE Task has been finished by all APs. + @retval FALSE Task not has been finished by all APs. + +**/ +BOOLEAN +WaitForAllAPsNotBusy ( + IN BOOLEAN BlockMode + ) +{ + UINTN Index; + + for (Index = mMaxNumberOfCpus; Index-- > 0;) { + // + // Ignore BSP and APs which not call in SMM. + // + if ((Index == gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu) || (!*(mSmmMpSyncData->CpuData[Index].Present))) { + continue; + } + + if (BlockMode) { + AcquireSpinLock(mSmmMpSyncData->CpuData[Index].Busy); + ReleaseSpinLock(mSmmMpSyncData->CpuData[Index].Busy); + } else { + if (AcquireSpinLockOrFail (mSmmMpSyncData->CpuData[Index].Busy)) { + ReleaseSpinLock(mSmmMpSyncData->CpuData[Index].Busy); + } else { + return FALSE; + } + } + } + + return TRUE; +} + +/** + Check whether execute in single AP or all APs. + + Compare two Tokens used by different APs to know whether in StartAllAps call. + + Whether is an valid AP base on AP's Present flag. + + @retval TRUE IN StartAllAps call. + @retval FALSE Not in StartAllAps call. + +**/ +BOOLEAN +InStartAllApsCall ( + VOID + ) +{ + UINTN ApIndex; + UINTN ApIndex2; + + for (ApIndex = mMaxNumberOfCpus; ApIndex-- > 0;) { + if ((ApIndex != gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu) && + *(mSmmMpSyncData->CpuData[ApIndex].Present) && + (mSmmMpSyncData->CpuData[ApIndex].Token != NULL)) { + for (ApIndex2 = ApIndex; ApIndex2-- > 0;) { + if ((ApIndex2 != gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu) && + *(mSmmMpSyncData->CpuData[ApIndex2].Present) && + (mSmmMpSyncData->CpuData[ApIndex2].Token != NULL)) { + return mSmmMpSyncData->CpuData[ApIndex2].Token == mSmmMpSyncData->CpuData[ApIndex].Token; + } + } + } + } + + return FALSE; +} + +/** + Clean up the status flags used during executing the procedure. + + @param CpuIndex The AP index which calls this function. + +**/ +VOID +ReleaseToken ( + IN UINTN CpuIndex + ) +{ + UINTN Index; + BOOLEAN Released; + + if (InStartAllApsCall ()) { + // + // In Start All APs mode, make sure all APs have finished task. + // + if (WaitForAllAPsNotBusy (FALSE)) { + // + // Clean the flags update in the function call. + // + Released = FALSE; + for (Index = mMaxNumberOfCpus; Index-- > 0;) { + // + // Only In SMM APs need to be clean up. + // + if (mSmmMpSyncData->CpuData[Index].Present && mSmmMpSyncData->CpuData[Index].Token != NULL) { + if (!Released) { + ReleaseSpinLock (mSmmMpSyncData->CpuData[Index].Token); + Released = TRUE; + } + mSmmMpSyncData->CpuData[Index].Token = NULL; + } + } + } + } else { + // + // In single AP mode. + // + if (mSmmMpSyncData->CpuData[CpuIndex].Token != NULL) { + ReleaseSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Token); + mSmmMpSyncData->CpuData[CpuIndex].Token = NULL; + } + } +} + /** SMI handler for BSP. @@ -476,12 +600,7 @@ BSPHandler ( // // Make sure all APs have completed their pending none-block tasks // - for (Index = mMaxNumberOfCpus; Index-- > 0;) { - if (Index != CpuIndex && *(mSmmMpSyncData->CpuData[Index].Present)) { - AcquireSpinLock (mSmmMpSyncData->CpuData[Index].Busy); - ReleaseSpinLock (mSmmMpSyncData->CpuData[Index].Busy); - } - } + WaitForAllAPsNotBusy (TRUE); // // Perform the remaining tasks @@ -604,6 +723,7 @@ APHandler ( UINT64 Timer; UINTN BspIndex; MTRR_SETTINGS Mtrrs; + EFI_STATUS ProcedureStatus; // // Timeout BSP @@ -730,14 +850,19 @@ APHandler ( // // Invoke the scheduled procedure // - (*mSmmMpSyncData->CpuData[CpuIndex].Procedure) ( - (VOID*)mSmmMpSyncData->CpuData[CpuIndex].Parameter - ); + ProcedureStatus = (*mSmmMpSyncData->CpuData[CpuIndex].Procedure) ( + (VOID*)mSmmMpSyncData->CpuData[CpuIndex].Parameter + ); + if (mSmmMpSyncData->CpuData[CpuIndex].Status != NULL) { + *mSmmMpSyncData->CpuData[CpuIndex].Status = ProcedureStatus; + } // // Release BUSY // ReleaseSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy); + + ReleaseToken (CpuIndex); } if (SmmCpuFeaturesNeedConfigureMtrrs()) { @@ -906,13 +1031,136 @@ Gen4GPageTable ( return (UINT32)(UINTN)PageTable; } +/** + Checks whether the input token is the current used token. + + @param[in] Token This parameter describes the token that was passed into DispatchProcedure or + BroadcastProcedure. + + @retval TRUE The input token is the current used token. + @retval FALSE The input token is not the current used token. +**/ +BOOLEAN +IsTokenInUse ( + IN SPIN_LOCK *Token + ) +{ + LIST_ENTRY *Link; + PROCEDURE_TOKEN *ProcToken; + + if (Token == NULL) { + return FALSE; + } + + for (Link = gTokenList.ForwardLink; Link != &gTokenList; Link = Link->ForwardLink) { + ProcToken = PROCEDURE_TOKEN_FROM_LINK (Link); + + if (ProcToken->ProcedureToken == Token) { + return TRUE; + } + } + + return FALSE; +} + +/** + Insert the token to the maintained list. + + @param[in] Token This parameter describes the token that was passed into DispatchProcedure or + BroadcastProcedure. + +**/ +VOID +InsertToken ( + IN SPIN_LOCK *Token + ) +{ + PROCEDURE_TOKEN *ProcToken; + + ProcToken = AllocatePool (sizeof (PROCEDURE_TOKEN)); + ASSERT (ProcToken != NULL); + + ProcToken->Signature = PROCEDURE_TOKEN_SIGNATURE; + ProcToken->ProcedureToken = Token; + + InsertTailList (&gTokenList, &ProcToken->Link); +} + +/** + Free the tokens in the maintained list. + +**/ +VOID +FreeToken ( + VOID + ) +{ + LIST_ENTRY *Link; + PROCEDURE_TOKEN *ProcToken; + + while (!IsListEmpty (&gTokenList)) { + Link = GetFirstNode (&gTokenList); + ProcToken = PROCEDURE_TOKEN_FROM_LINK (Link); + + RemoveEntryList (&ProcToken->Link); + + FreePool ((VOID *)ProcToken->ProcedureToken); + FreePool (ProcToken); + } +} + +/** + Checks status of specified AP. + + This function checks whether the specified AP has finished the task assigned + by StartupThisAP(), and whether timeout expires. + + @param[in] Token This parameter describes the token that was passed into DispatchProcedure or + BroadcastProcedure. + + @retval EFI_SUCCESS Specified AP has finished task assigned by StartupThisAPs(). + @retval EFI_NOT_READY Specified AP has not finished task and timeout has not expired. +**/ +EFI_STATUS +IsApReady ( + IN SPIN_LOCK *Token + ) +{ + if (AcquireSpinLockOrFail (Token)) { + ReleaseSpinLock (Token); + return EFI_SUCCESS; + } + + return EFI_NOT_READY; +} + /** Schedule a procedure to run on the specified CPU. @param[in] Procedure The address of the procedure to run @param[in] CpuIndex Target CPU Index - @param[in, out] ProcArguments The parameter to pass to the procedure - @param[in] BlockingMode Startup AP in blocking mode or not + @param[in,out] ProcArguments The parameter to pass to the procedure + @param[in] Token This is an optional parameter that allows the caller to execute the + procedure in a blocking or non-blocking fashion. If it is NULL the + call is blocking, and the call will not return until the AP has + completed the procedure. If the token is not NULL, the call will + return immediately. The caller can check whether the procedure has + completed with CheckOnProcedure or WaitForProcedure. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for the APs to finish + execution of Procedure, either for blocking or non-blocking mode. + Zero means infinity. If the timeout expires before all APs return + from Procedure, then Procedure on the failed APs is terminated. If + the timeout expires in blocking mode, the call returns EFI_TIMEOUT. + If the timeout expires in non-blocking mode, the timeout determined + can be through CheckOnProcedure or WaitForProcedure. + Note that timeout support is optional. Whether an implementation + supports this feature can be determined via the Attributes data + member. + @param[in,out] CpuStatus This optional pointer may be used to get the status code returned + by Procedure when it completes execution on the target AP, or with + EFI_TIMEOUT if the Procedure fails to complete within the optional + timeout. The implementation will update this variable with + EFI_NOT_READY prior to starting Procedure on the target AP. @retval EFI_INVALID_PARAMETER CpuNumber not valid @retval EFI_INVALID_PARAMETER CpuNumber specifying BSP @@ -923,10 +1171,12 @@ Gen4GPageTable ( **/ EFI_STATUS InternalSmmStartupThisAp ( - IN EFI_AP_PROCEDURE Procedure, - IN UINTN CpuIndex, - IN OUT VOID *ProcArguments OPTIONAL, - IN BOOLEAN BlockingMode + IN EFI_AP_PROCEDURE2 Procedure, + IN UINTN CpuIndex, + IN OUT VOID *ProcArguments OPTIONAL, + IN SPIN_LOCK *Token, + IN UINTN TimeoutInMicroseconds, + IN OUT EFI_STATUS *CpuStatus ) { if (CpuIndex >= gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus) { @@ -952,24 +1202,195 @@ InternalSmmStartupThisAp ( } return EFI_INVALID_PARAMETER; } + if ((TimeoutInMicroseconds != 0) && ((mSmmMp.Attributes & EFI_MM_MP_TIMEOUT_SUPPORTED) == 0)) { + return EFI_INVALID_PARAMETER; + } + if (Procedure == NULL) { + return EFI_INVALID_PARAMETER; + } + if (IsTokenInUse (Token)) { + return EFI_ALREADY_STARTED; + } - if (BlockingMode) { + if (Token == NULL) { AcquireSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy); } else { if (!AcquireSpinLockOrFail (mSmmMpSyncData->CpuData[CpuIndex].Busy)) { - DEBUG((DEBUG_ERROR, "mSmmMpSyncData->CpuData[%d].Busy\n", CpuIndex)); - return EFI_INVALID_PARAMETER; + DEBUG((DEBUG_ERROR, "Can't acquire mSmmMpSyncData->CpuData[%d].Busy\n", CpuIndex)); + ReleaseSpinLock (Token); + return EFI_NOT_READY; } + + AcquireSpinLock (Token); + InsertToken (Token); } mSmmMpSyncData->CpuData[CpuIndex].Procedure = Procedure; mSmmMpSyncData->CpuData[CpuIndex].Parameter = ProcArguments; + mSmmMpSyncData->CpuData[CpuIndex].Token = Token; + mSmmMpSyncData->CpuData[CpuIndex].Status = CpuStatus; + if (mSmmMpSyncData->CpuData[CpuIndex].Status != NULL) { + *mSmmMpSyncData->CpuData[CpuIndex].Status = EFI_NOT_READY; + } + ReleaseSemaphore (mSmmMpSyncData->CpuData[CpuIndex].Run); - if (BlockingMode) { + if (Token == NULL) { AcquireSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy); ReleaseSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy); } + + return EFI_SUCCESS; +} + +/** + Worker function to execute a caller provided function on all enabled APs. + + @param[in] Procedure A pointer to the function to be run on + enabled APs of the system. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for + APs to return from Procedure, either for + blocking or non-blocking mode. + @param[in,out] ProcedureArguments The parameter passed into Procedure for + all APs. + @param[in,out] Token This is an optional parameter that allows the caller to execute the + procedure in a blocking or non-blocking fashion. If it is NULL the + call is blocking, and the call will not return until the AP has + completed the procedure. If the token is not NULL, the call will + return immediately. The caller can check whether the procedure has + completed with CheckOnProcedure or WaitForProcedure. + @param[in,out] CPUStatus This optional pointer may be used to get the status code returned + by Procedure when it completes execution on the target AP, or with + EFI_TIMEOUT if the Procedure fails to complete within the optional + timeout. The implementation will update this variable with + EFI_NOT_READY prior to starting Procedure on the target AP. + + + @retval EFI_SUCCESS In blocking mode, all APs have finished before + the timeout expired. + @retval EFI_SUCCESS In non-blocking mode, function has been dispatched + to all enabled APs. + @retval others Failed to Startup all APs. + +**/ +EFI_STATUS +InternalSmmStartupAllAPs ( + IN EFI_AP_PROCEDURE2 Procedure, + IN UINTN TimeoutInMicroseconds, + IN OUT VOID *ProcedureArguments OPTIONAL, + IN OUT SPIN_LOCK *Token, + IN OUT EFI_STATUS *CPUStatus + ) +{ + UINTN Index; + UINTN CpuCount; + + if ((TimeoutInMicroseconds != 0) && ((mSmmMp.Attributes & EFI_MM_MP_TIMEOUT_SUPPORTED) == 0)) { + return EFI_INVALID_PARAMETER; + } + if (Procedure == NULL) { + return EFI_INVALID_PARAMETER; + } + if (IsTokenInUse (Token)) { + return EFI_ALREADY_STARTED; + } + + CpuCount = 0; + for (Index = mMaxNumberOfCpus; Index-- > 0;) { + if (*mSmmMpSyncData->CpuData[Index].Present && (Index != gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu)) { + CpuCount ++; + + if (gSmmCpuPrivate->Operation[Index] == SmmCpuRemove) { + return EFI_INVALID_PARAMETER; + } + + if (!AcquireSpinLockOrFail(mSmmMpSyncData->CpuData[Index].Busy)) { + return EFI_NOT_READY; + } + ReleaseSpinLock (mSmmMpSyncData->CpuData[Index].Busy); + } + } + if (CpuCount == 0) { + return EFI_NOT_STARTED; + } + + // + // Make sure all BUSY should be acquired. + // + // Because former code already check mSmmMpSyncData->CpuData[***].Busy for each AP. + // Here code always use AcquireSpinLock instead of AcquireSpinLockOrFail for not + // block mode. + // + for (Index = mMaxNumberOfCpus; Index-- > 0;) { + if (Index != gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu && *(mSmmMpSyncData->CpuData[Index].Present)) { + AcquireSpinLock (mSmmMpSyncData->CpuData[Index].Busy); + } + } + + if (Token != NULL) { + AcquireSpinLock (Token); + InsertToken (Token); + } + + for (Index = mMaxNumberOfCpus; Index-- > 0;) { + if (Index != gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu && *(mSmmMpSyncData->CpuData[Index].Present)) { + mSmmMpSyncData->CpuData[Index].Procedure = (EFI_AP_PROCEDURE2) Procedure; + mSmmMpSyncData->CpuData[Index].Parameter = ProcedureArguments; + mSmmMpSyncData->CpuData[Index].Token = Token; + if (CPUStatus != NULL) { + mSmmMpSyncData->CpuData[Index].Status = &CPUStatus[Index]; + if (mSmmMpSyncData->CpuData[Index].Status != NULL) { + *mSmmMpSyncData->CpuData[Index].Status = EFI_NOT_READY; + } + } + } else { + // + // PI spec requirement: + // For every excluded processor, the array entry must contain a value of EFI_NOT_STARTED. + // + if (CPUStatus != NULL) { + CPUStatus[Index] = EFI_NOT_STARTED; + } + } + } + + ReleaseAllAPs (); + + if (Token == NULL) { + // + // Make sure all APs have completed their tasks. + // + WaitForAllAPsNotBusy (TRUE); + } + + return EFI_SUCCESS; +} + +/** + ISO C99 6.5.2.2 "Function calls", paragraph 9: + If the function is defined with a type that is not compatible with + the type (of the expression) pointed to by the expression that + denotes the called function, the behavior is undefined. + + So add below wrapper function to convert between EFI_AP_PROCEDURE + and EFI_AP_PROCEDURE2. + + Wrapper for Procedures. + + @param[in] Buffer Pointer to PROCEDURE_WRAPPER buffer. + +**/ +EFI_STATUS +EFIAPI +ProcedureWrapper ( + IN OUT VOID *Buffer + ) +{ + PROCEDURE_WRAPPER *Wrapper; + + Wrapper = Buffer; + Wrapper->Procedure (Wrapper->ProcedureArgument); + return EFI_SUCCESS; } @@ -995,7 +1416,18 @@ SmmBlockingStartupThisAp ( IN OUT VOID *ProcArguments OPTIONAL ) { - return InternalSmmStartupThisAp(Procedure, CpuIndex, ProcArguments, TRUE); + PROCEDURE_WRAPPER Wrapper; + EFI_STATUS Status; + + Wrapper.Procedure = Procedure; + Wrapper.ProcedureArgument = ProcArguments; + + // + // Use wrapper function to convert EFI_AP_PROCEDURE to EFI_AP_PROCEDURE2. + // + Status = InternalSmmStartupThisAp (ProcedureWrapper, CpuIndex, &Wrapper, NULL, 0, NULL); + + return Status; } /** @@ -1020,7 +1452,28 @@ SmmStartupThisAp ( IN OUT VOID *ProcArguments OPTIONAL ) { - return InternalSmmStartupThisAp(Procedure, CpuIndex, ProcArguments, FeaturePcdGet (PcdCpuSmmBlockStartupThisAp)); + SPIN_LOCK *CpuToken; + UINTN SpinLockSize; + + mApWrapperFunc[CpuIndex].Procedure = Procedure; + mApWrapperFunc[CpuIndex].ProcedureArgument = ProcArguments; + + if (FeaturePcdGet (PcdCpuSmmBlockStartupThisAp)) { + CpuToken = NULL; + } else { + SpinLockSize = GetSpinLockProperties (); + CpuToken = AllocatePool (SpinLockSize); + ASSERT (CpuToken != NULL); + if (CpuToken == NULL) { + return EFI_OUT_OF_RESOURCES; + } + InitializeSpinLock ((SPIN_LOCK *)(CpuToken)); + } + + // + // Use wrapper function to convert EFI_AP_PROCEDURE to EFI_AP_PROCEDURE2. + // + return InternalSmmStartupThisAp (ProcedureWrapper, CpuIndex, &mApWrapperFunc[CpuIndex], CpuToken, 0, NULL); } /** @@ -1112,6 +1565,13 @@ SmiRendezvous ( Cr2 = 0; SaveCr2 (&Cr2); + // + // Call the user register Startup function first. + // + if (mSmmMpSyncData->StartupProcedure != NULL) { + mSmmMpSyncData->StartupProcedure (mSmmMpSyncData->StartupProcArgs); + } + // // Perform CPU specific entry hooks // @@ -1250,12 +1710,31 @@ SmiRendezvous ( Exit: SmmCpuFeaturesRendezvousExit (CpuIndex); + if (CpuIndex == gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu) { + FreeToken (); + } + // // Restore Cr2 // RestoreCr2 (Cr2); } +/** + Allocate buffer for SpinLock and Wrapper function buffer. + +**/ +VOID +InitializeDataForMmMp ( + VOID + ) +{ + mApWrapperFunc = AllocatePool (sizeof (PROCEDURE_WRAPPER) * gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus); + ASSERT (mApWrapperFunc != NULL); + + InitializeListHead (&gTokenList); +} + /** Allocate buffer for all semaphores and spin locks. @@ -1469,3 +1948,40 @@ RegisterSmmEntry ( gSmmCpuPrivate->SmmCoreEntry = SmmEntryPoint; return EFI_SUCCESS; } + +/** + + Register the SMM Foundation entry point. + + @param[in] Procedure A pointer to the code stream to be run on the designated target AP + of the system. Type EFI_AP_PROCEDURE is defined below in Volume 2 + with the related definitions of + EFI_MP_SERVICES_PROTOCOL.StartupAllAPs. + If caller may pass a value of NULL to deregister any existing + startup procedure. + @param[in] ProcedureArguments Allows the caller to pass a list of parameters to the code that is + run by the AP. It is an optional common mailbox between APs and + the caller to share information + + @retval EFI_SUCCESS The Procedure has been set successfully. + @retval EFI_INVALID_PARAMETER The Procedure is NULL but ProcedureArguments not NULL. + +**/ +EFI_STATUS +RegisterStartupProcedure ( + IN EFI_AP_PROCEDURE Procedure, + IN VOID *ProcedureArguments OPTIONAL + ) +{ + if (Procedure == NULL && ProcedureArguments != NULL) { + return EFI_INVALID_PARAMETER; + } + if (mSmmMpSyncData == NULL) { + return EFI_NOT_READY; + } + + mSmmMpSyncData->StartupProcedure = Procedure; + mSmmMpSyncData->StartupProcArgs = ProcedureArguments; + + return EFI_SUCCESS; +} diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c index 2f7d777ee7..bb9b0822f8 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c @@ -996,6 +996,22 @@ PiCpuSmmEntry ( ); ASSERT_EFI_ERROR (Status); + // + // Initialize global buffer for MM MP. + // + InitializeDataForMmMp (); + + // + // Install the SMM Mp Protocol into SMM protocol database + // + Status = gSmst->SmmInstallProtocolInterface ( + &mSmmCpuHandle, + &gEfiMmMpProtocolGuid, + EFI_NATIVE_INTERFACE, + &mSmmMp + ); + ASSERT_EFI_ERROR (Status); + // // Expose address of CPU Hot Plug Data structure if CPU hot plug is supported. // diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h index 2bb35a424d..eb7e38ea94 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h @@ -20,6 +20,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent #include <Protocol/SmmReadyToLock.h> #include <Protocol/SmmCpuService.h> #include <Protocol/SmmMemoryAttribute.h> +#include <Protocol/MmMp.h> #include <Guid/AcpiS3Context.h> #include <Guid/MemoryAttributesTable.h> @@ -221,11 +222,31 @@ typedef struct { EFI_SMM_CONFIGURATION_PROTOCOL SmmConfiguration; } SMM_CPU_PRIVATE_DATA; +// +// Wrapper used to convert EFI_AP_PROCEDURE2 and EFI_AP_PROCEDURE. +// +typedef struct { + EFI_AP_PROCEDURE Procedure; + VOID *ProcedureArgument; +} PROCEDURE_WRAPPER; + +#define PROCEDURE_TOKEN_SIGNATURE SIGNATURE_32 ('P', 'R', 'T', 'S') + +typedef struct { + UINTN Signature; + LIST_ENTRY Link; + + SPIN_LOCK *ProcedureToken; +} PROCEDURE_TOKEN; + +#define PROCEDURE_TOKEN_FROM_LINK(a) CR (a, PROCEDURE_TOKEN, Link, PROCEDURE_TOKEN_SIGNATURE) + extern SMM_CPU_PRIVATE_DATA *gSmmCpuPrivate; extern CPU_HOT_PLUG_DATA mCpuHotPlugData; extern UINTN mMaxNumberOfCpus; extern UINTN mNumberOfCpus; extern EFI_SMM_CPU_PROTOCOL mSmmCpu; +extern EFI_MM_MP_PROTOCOL mSmmMp; /// /// The mode of the CPU at the time an SMI occurs @@ -363,10 +384,12 @@ SmmRelocationSemaphoreComplete ( /// typedef struct { SPIN_LOCK *Busy; - volatile EFI_AP_PROCEDURE Procedure; + volatile EFI_AP_PROCEDURE2 Procedure; volatile VOID *Parameter; volatile UINT32 *Run; volatile BOOLEAN *Present; + SPIN_LOCK *Token; + EFI_STATUS *Status; } SMM_CPU_DATA_BLOCK; typedef enum { @@ -388,6 +411,8 @@ typedef struct { volatile SMM_CPU_SYNC_MODE EffectiveSyncMode; volatile BOOLEAN SwitchBsp; volatile BOOLEAN *CandidateBsp; + EFI_AP_PROCEDURE StartupProcedure; + VOID *StartupProcArgs; } SMM_DISPATCHER_MP_SYNC_DATA; #define SMM_PSD_OFFSET 0xfb00 @@ -410,6 +435,7 @@ typedef struct { SPIN_LOCK *Busy; volatile UINT32 *Run; volatile BOOLEAN *Present; + SPIN_LOCK *Token; } SMM_CPU_SEMAPHORE_CPU; /// @@ -1259,4 +1285,151 @@ RestoreCr2 ( IN UINTN Cr2 ); +/** + Schedule a procedure to run on the specified CPU. + + @param[in] Procedure The address of the procedure to run + @param[in] CpuIndex Target CPU Index + @param[in,out] ProcArguments The parameter to pass to the procedure + @param[in,out] Token This is an optional parameter that allows the caller to execute the + procedure in a blocking or non-blocking fashion. If it is NULL the + call is blocking, and the call will not return until the AP has + completed the procedure. If the token is not NULL, the call will + return immediately. The caller can check whether the procedure has + completed with CheckOnProcedure or WaitForProcedure. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for the APs to finish + execution of Procedure, either for blocking or non-blocking mode. + Zero means infinity. If the timeout expires before all APs return + from Procedure, then Procedure on the failed APs is terminated. If + the timeout expires in blocking mode, the call returns EFI_TIMEOUT. + If the timeout expires in non-blocking mode, the timeout determined + can be through CheckOnProcedure or WaitForProcedure. + Note that timeout support is optional. Whether an implementation + supports this feature can be determined via the Attributes data + member. + @param[in,out] CPUStatus This optional pointer may be used to get the status code returned + by Procedure when it completes execution on the target AP, or with + EFI_TIMEOUT if the Procedure fails to complete within the optional + timeout. The implementation will update this variable with + EFI_NOT_READY prior to starting Procedure on the target AP. + + @retval EFI_INVALID_PARAMETER CpuNumber not valid + @retval EFI_INVALID_PARAMETER CpuNumber specifying BSP + @retval EFI_INVALID_PARAMETER The AP specified by CpuNumber did not enter SMM + @retval EFI_INVALID_PARAMETER The AP specified by CpuNumber is busy + @retval EFI_SUCCESS The procedure has been successfully scheduled + +**/ +EFI_STATUS +InternalSmmStartupThisAp ( + IN EFI_AP_PROCEDURE2 Procedure, + IN UINTN CpuIndex, + IN OUT VOID *ProcArguments OPTIONAL, + IN SPIN_LOCK *Token, + IN UINTN TimeoutInMicroseconds, + IN OUT EFI_STATUS *CpuStatus + ); + +/** + Checks whether the input token is the current used token. + + @param[in] Token This parameter describes the token that was passed into DispatchProcedure or + BroadcastProcedure. + + @retval TRUE The input token is the current used token. + @retval FALSE The input token is not the current used token. +**/ +BOOLEAN +IsTokenInUse ( + IN SPIN_LOCK *Token + ); + +/** + Checks status of specified AP. + + This function checks whether the specified AP has finished the task assigned + by StartupThisAP(), and whether timeout expires. + + @param[in] Token This parameter describes the token that was passed into DispatchProcedure or + BroadcastProcedure. + + @retval EFI_SUCCESS Specified AP has finished task assigned by StartupThisAPs(). + @retval EFI_NOT_READY Specified AP has not finished task and timeout has not expired. +**/ +EFI_STATUS +IsApReady ( + IN SPIN_LOCK *Token + ); + +/** + Worker function to execute a caller provided function on all enabled APs. + + @param[in] Procedure A pointer to the function to be run on + enabled APs of the system. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for + APs to return from Procedure, either for + blocking or non-blocking mode. + @param[in,out] ProcedureArgument The parameter passed into Procedure for + all APs. + @param[in,out] Token This is an optional parameter that allows the caller to execute the + procedure in a blocking or non-blocking fashion. If it is NULL the + call is blocking, and the call will not return until the AP has + completed the procedure. If the token is not NULL, the call will + return immediately. The caller can check whether the procedure has + completed with CheckOnProcedure or WaitForProcedure. + @param[in,out] CPUStatus This optional pointer may be used to get the status code returned + by Procedure when it completes execution on the target AP, or with + EFI_TIMEOUT if the Procedure fails to complete within the optional + timeout. The implementation will update this variable with + EFI_NOT_READY prior to starting Procedure on the target AP. + + @retval EFI_SUCCESS In blocking mode, all APs have finished before + the timeout expired. + @retval EFI_SUCCESS In non-blocking mode, function has been dispatched + to all enabled APs. + @retval others Failed to Startup all APs. + +**/ +EFI_STATUS +InternalSmmStartupAllAPs ( + IN EFI_AP_PROCEDURE2 Procedure, + IN UINTN TimeoutInMicroseconds, + IN OUT VOID *ProcedureArguments OPTIONAL, + IN OUT SPIN_LOCK *Token, + IN OUT EFI_STATUS *CPUStatus + ); + +/** + + Register the SMM Foundation entry point. + + @param[in] Procedure A pointer to the code stream to be run on the designated target AP + of the system. Type EFI_AP_PROCEDURE is defined below in Volume 2 + with the related definitions of + EFI_MP_SERVICES_PROTOCOL.StartupAllAPs. + If caller may pass a value of NULL to deregister any existing + startup procedure. + @param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code that is + run by the AP. It is an optional common mailbox between APs and + the caller to share information + + @retval EFI_SUCCESS The Procedure has been set successfully. + @retval EFI_INVALID_PARAMETER The Procedure is NULL but ProcedureArguments not NULL. + +**/ +EFI_STATUS +RegisterStartupProcedure ( + IN EFI_AP_PROCEDURE Procedure, + IN VOID *ProcedureArguments OPTIONAL + ); + +/** + Allocate buffer for SpinLock and Wrapper function buffer. + +**/ +VOID +InitializeDataForMmMp ( + VOID + ); + #endif diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf index 466c568d49..da0308c47f 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf @@ -40,6 +40,8 @@ SmmProfileInternal.h SmramSaveState.c SmmCpuMemoryManagement.c + SmmMp.h + SmmMp.c [Sources.Ia32] Ia32/Semaphore.c @@ -105,6 +107,7 @@ gEfiSmmReadyToLockProtocolGuid ## NOTIFY gEfiSmmCpuServiceProtocolGuid ## PRODUCES gEdkiiSmmMemoryAttributeProtocolGuid ## PRODUCES + gEfiMmMpProtocolGuid ## PRODUCES [Guids] gEfiAcpiVariableGuid ## SOMETIMES_CONSUMES ## HOB # it is used for S3 boot. diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c new file mode 100644 index 0000000000..ac563ce02c --- /dev/null +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c @@ -0,0 +1,376 @@ +/** @file +SMM MP protocol implementation + +Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> + +SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include "PiSmmCpuDxeSmm.h" +#include "SmmMp.h" + +/// +/// SMM MP Protocol instance +/// +EFI_MM_MP_PROTOCOL mSmmMp = { + EFI_MM_MP_PROTOCOL_REVISION, + 0, + SmmMpGetNumberOfProcessors, + SmmMpDispatchProcedure, + SmmMpBroadcastProcedure, + SmmMpSetStartupProcedure, + SmmMpCheckForProcedure, + SmmMpWaitForProcedure +}; + +/** + Service to retrieves the number of logical processor in the platform. + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[out] NumberOfProcessors Pointer to the total number of logical processors in the system, + including the BSP and all APs. + + @retval EFI_SUCCESS The number of processors was retrieved successfully + @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL +**/ +EFI_STATUS +EFIAPI +SmmMpGetNumberOfProcessors ( + IN CONST EFI_MM_MP_PROTOCOL *This, + OUT UINTN *NumberOfProcessors + ) +{ + if (NumberOfProcessors == NULL) { + return EFI_INVALID_PARAMETER; + } + + *NumberOfProcessors = gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus; + + return EFI_SUCCESS; +} + + +/** + This service allows the caller to invoke a procedure one of the application processors (AP). This + function uses an optional token parameter to support blocking and non-blocking modes. If the token + is passed into the call, the function will operate in a non-blocking fashion and the caller can + check for completion with CheckOnProcedure or WaitForProcedure. + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Procedure A pointer to the procedure to be run on the designated target + AP of the system. Type EFI_AP_PROCEDURE2 is defined below in + related definitions. + @param[in] CpuNumber The zero-based index of the processor number of the target + AP, on which the code stream is supposed to run. If the number + points to the calling processor then it will not run the + supplied code. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for this AP to + finish execution of Procedure, either for blocking or + non-blocking mode. Zero means infinity. If the timeout + expires before this AP returns from Procedure, then Procedure + on the AP is terminated. If the timeout expires in blocking + mode, the call returns EFI_TIMEOUT. If the timeout expires + in non-blocking mode, the timeout determined can be through + CheckOnProcedure or WaitForProcedure. + Note that timeout support is optional. Whether an + implementation supports this feature, can be determined via + the Attributes data member. + @param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code + that is run by the AP. It is an optional common mailbox + between APs and the caller to share information. + @param[in,out] Token This is parameter is broken into two components: + 1.Token->Completion is an optional parameter that allows the + caller to execute the procedure in a blocking or non-blocking + fashion. If it is NULL the call is blocking, and the call will + not return until the AP has completed the procedure. If the + token is not NULL, the call will return immediately. The caller + can check whether the procedure has completed with + CheckOnProcedure or WaitForProcedure. + 2.Token->Status The implementation updates the address pointed + at by this variable with the status code returned by Procedure + when it completes execution on the target AP, or with EFI_TIMEOUT + if the Procedure fails to complete within the optional timeout. + The implementation will update this variable with EFI_NOT_READY + prior to starting Procedure on the target AP + @param[in,out] CPUStatus This optional pointer may be used to get the status code returned + by Procedure when it completes execution on the target AP, or with + EFI_TIMEOUT if the Procedure fails to complete within the optional + timeout. The implementation will update this variable with + EFI_NOT_READY prior to starting Procedure on the target AP. + + @retval EFI_SUCCESS In the blocking case, this indicates that Procedure has completed + execution on the target AP. + In the non-blocking case this indicates that the procedure has + been successfully scheduled for execution on the target AP. + @retval EFI_INVALID_PARAMETER The input arguments are out of range. Either the target AP is the + caller of the function, or the Procedure or Token is NULL + @retval EFI_NOT_READY If the target AP is busy executing another procedure + @retval EFI_ALREADY_STARTED Token is already in use for another procedure + @retval EFI_TIMEOUT In blocking mode, the timeout expired before the specified AP + has finished + @retval EFI_OUT_OF_RESOURCES Could not allocate a required resource. + +**/ +EFI_STATUS +EFIAPI +SmmMpDispatchProcedure ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN EFI_AP_PROCEDURE2 Procedure, + IN UINTN CpuNumber, + IN UINTN TimeoutInMicroseconds, + IN OUT VOID *ProcedureArguments OPTIONAL, + IN OUT MM_COMPLETION *Token, + IN OUT EFI_STATUS *CPUStatus + ) +{ + SPIN_LOCK *CpuToken; + UINTN SpinLockSize; + + if (Token != NULL) { + SpinLockSize = GetSpinLockProperties (); + CpuToken = AllocatePool (SpinLockSize); + ASSERT (CpuToken != NULL); + if (CpuToken == NULL) { + return EFI_OUT_OF_RESOURCES; + } + InitializeSpinLock ((SPIN_LOCK *)(CpuToken)); + + *Token = (MM_COMPLETION)CpuToken; + } + + return InternalSmmStartupThisAp ( + Procedure, + CpuNumber, + ProcedureArguments, + Token != NULL ? CpuToken : NULL, + TimeoutInMicroseconds, + CPUStatus + ); +} + +/** + This service allows the caller to invoke a procedure on all running application processors (AP) + except the caller. This function uses an optional token parameter to support blocking and + nonblocking modes. If the token is passed into the call, the function will operate in a non-blocking + fashion and the caller can check for completion with CheckOnProcedure or WaitForProcedure. + + It is not necessary for the implementation to run the procedure on every processor on the platform. + Processors that are powered down in such a way that they cannot respond to interrupts, may be + excluded from the broadcast. + + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Procedure A pointer to the code stream to be run on the APs that have + entered MM. Type EFI_AP_PROCEDURE is defined below in related + definitions. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for the APs to finish + execution of Procedure, either for blocking or non-blocking mode. + Zero means infinity. If the timeout expires before all APs return + from Procedure, then Procedure on the failed APs is terminated. If + the timeout expires in blocking mode, the call returns EFI_TIMEOUT. + If the timeout expires in non-blocking mode, the timeout determined + can be through CheckOnProcedure or WaitForProcedure. + Note that timeout support is optional. Whether an implementation + supports this feature can be determined via the Attributes data + member. + @param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code + that is run by the AP. It is an optional common mailbox + between APs and the caller to share information. + @param[in,out] Token This is parameter is broken into two components: + 1.Token->Completion is an optional parameter that allows the + caller to execute the procedure in a blocking or non-blocking + fashion. If it is NULL the call is blocking, and the call will + not return until the AP has completed the procedure. If the + token is not NULL, the call will return immediately. The caller + can check whether the procedure has completed with + CheckOnProcedure or WaitForProcedure. + 2.Token->Status The implementation updates the address pointed + at by this variable with the status code returned by Procedure + when it completes execution on the target AP, or with EFI_TIMEOUT + if the Procedure fails to complete within the optional timeout. + The implementation will update this variable with EFI_NOT_READY + prior to starting Procedure on the target AP + @param[in,out] CPUStatus This optional pointer may be used to get the individual status + returned by every AP that participated in the broadcast. This + parameter if used provides the base address of an array to hold + the EFI_STATUS value of each AP in the system. The size of the + array can be ascertained by the GetNumberOfProcessors function. + As mentioned above, the broadcast may not include every processor + in the system. Some implementations may exclude processors that + have been powered down in such a way that they are not responsive + to interrupts. Additionally the broadcast excludes the processor + which is making the BroadcastProcedure call. For every excluded + processor, the array entry must contain a value of EFI_NOT_STARTED + + @retval EFI_SUCCESS In the blocking case, this indicates that Procedure has completed + execution on the APs. + In the non-blocking case this indicates that the procedure has + been successfully scheduled for execution on the APs. + @retval EFI_INVALID_PARAMETER The Procedure or Token is NULL + @retval EFI_NOT_READY If the target AP is busy executing another procedure + @retval EFI_ALREADY_STARTED Token is already in use for another procedure + @retval EFI_TIMEOUT In blocking mode, the timeout expired before the specified AP + has finished. + @retval EFI_OUT_OF_RESOURCES Could not allocate a required resource. + +**/ +EFI_STATUS +EFIAPI +SmmMpBroadcastProcedure ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN EFI_AP_PROCEDURE2 Procedure, + IN UINTN TimeoutInMicroseconds, + IN OUT VOID *ProcedureArguments OPTIONAL, + IN OUT MM_COMPLETION *Token, + IN OUT EFI_STATUS *CPUStatus + ) +{ + SPIN_LOCK *CpuToken; + UINTN SpinLockSize; + + if (Token != NULL) { + SpinLockSize = GetSpinLockProperties (); + CpuToken = AllocatePool (SpinLockSize); + ASSERT (CpuToken != NULL); + if (CpuToken == NULL) { + return EFI_OUT_OF_RESOURCES; + } + InitializeSpinLock ((SPIN_LOCK *)(CpuToken)); + + *Token = (MM_COMPLETION)CpuToken; + } + + return InternalSmmStartupAllAPs( + Procedure, + TimeoutInMicroseconds, + ProcedureArguments, + Token != NULL ? CpuToken : NULL, + CPUStatus + ); +} + + +/** + This service allows the caller to set a startup procedure that will be executed when an AP powers + up from a state where core configuration and context is lost. The procedure is execution has the + following properties: + 1. The procedure executes before the processor is handed over to the operating system. + 2. All processors execute the same startup procedure. + 3. The procedure may run in parallel with other procedures invoked through the functions in this + protocol, or with processors that are executing an MM handler or running in the operating system. + + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Procedure A pointer to the code stream to be run on the designated target AP + of the system. Type EFI_AP_PROCEDURE is defined below in Volume 2 + with the related definitions of + EFI_MP_SERVICES_PROTOCOL.StartupAllAPs. + If caller may pass a value of NULL to deregister any existing + startup procedure. + @param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code that is + run by the AP. It is an optional common mailbox between APs and + the caller to share information + + @retval EFI_SUCCESS The Procedure has been set successfully. + @retval EFI_INVALID_PARAMETER The Procedure is NULL but ProcedureArguments not NULL. + +**/ +EFI_STATUS +EFIAPI +SmmMpSetStartupProcedure ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN EFI_AP_PROCEDURE Procedure, + IN OUT VOID *ProcedureArguments OPTIONAL + ) +{ + return RegisterStartupProcedure (Procedure, ProcedureArguments); +} + +/** + When non-blocking execution of a procedure on an AP is invoked with DispatchProcedure, + via the use of a token, this function can be used to check for completion of the procedure on the AP. + The function takes the token that was passed into the DispatchProcedure call. If the procedure + is complete, and therefore it is now possible to run another procedure on the same AP, this function + returns EFI_SUCESS. In this case the status returned by the procedure that executed on the AP is + returned in the token's Status field. If the procedure has not yet completed, then this function + returns EFI_NOT_READY. + + When a non-blocking execution of a procedure is invoked with BroadcastProcedure, via the + use of a token, this function can be used to check for completion of the procedure on all the + broadcast APs. The function takes the token that was passed into the BroadcastProcedure + call. If the procedure is complete on all broadcast APs this function returns EFI_SUCESS. In this + case the Status field in the token passed into the function reflects the overall result of the + invocation, which may be EFI_SUCCESS, if all executions succeeded, or the first observed failure. + If the procedure has not yet completed on the broadcast APs, the function returns + EFI_NOT_READY. + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Token This parameter describes the token that was passed into + DispatchProcedure or BroadcastProcedure. + + @retval EFI_SUCCESS Procedure has completed. + @retval EFI_NOT_READY The Procedure has not completed. + @retval EFI_INVALID_PARAMETER Token or Token->Completion is NULL + @retval EFI_NOT_FOUND Token is not currently in use for a non-blocking call + +**/ +EFI_STATUS +EFIAPI +SmmMpCheckForProcedure ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN MM_COMPLETION Token + ) +{ + if (Token == NULL) { + return EFI_INVALID_PARAMETER; + } + + if (!IsTokenInUse ((SPIN_LOCK *)Token)) { + return EFI_NOT_FOUND; + } + + return IsApReady ((SPIN_LOCK *)Token); +} + +/** + When a non-blocking execution of a procedure on an AP is invoked via DispatchProcedure, + this function will block the caller until the remote procedure has completed on the designated AP. + The non-blocking procedure invocation is identified by the Token parameter, which must match the + token that used when DispatchProcedure was called. Upon completion the status returned by + the procedure that executed on the AP is used to update the token's Status field. + + When a non-blocking execution of a procedure on an AP is invoked via BroadcastProcedure + this function will block the caller until the remote procedure has completed on all of the APs that + entered MM. The non-blocking procedure invocation is identified by the Token parameter, which + must match the token that used when BroadcastProcedure was called. Upon completion the + overall status returned by the procedures that executed on the broadcast AP is used to update the + token's Status field. The overall status may be EFI_SUCCESS, if all executions succeeded, or the + first observed failure. + + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Token This parameter describes the token that was passed into + DispatchProcedure or BroadcastProcedure. + + @retval EFI_SUCCESS Procedure has completed. + @retval EFI_INVALID_PARAMETER Token or Token->Completion is NULL + @retval EFI_NOT_FOUND Token is not currently in use for a non-blocking call + +**/ +EFI_STATUS +EFIAPI +SmmMpWaitForProcedure ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN MM_COMPLETION Token + ) +{ + EFI_STATUS Status; + + do { + Status = SmmMpCheckForProcedure (This, Token); + } while (Status == EFI_NOT_READY); + + return Status; +} + diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h new file mode 100644 index 0000000000..e0d823a4b1 --- /dev/null +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h @@ -0,0 +1,286 @@ +/** @file +Include file for SMM MP protocol implementation. + +Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> + +SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#ifndef _SMM_MP_PROTOCOL_H_ +#define _SMM_MP_PROTOCOL_H_ + +// +// SMM MP Protocol function prototypes. +// + +/** + Service to retrieves the number of logical processor in the platform. + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[out] NumberOfProcessors Pointer to the total number of logical processors in the system, + including the BSP and all APs. + + @retval EFI_SUCCESS The number of processors was retrieved successfully + @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL +**/ + +EFI_STATUS +EFIAPI +SmmMpGetNumberOfProcessors ( + IN CONST EFI_MM_MP_PROTOCOL *This, + OUT UINTN *NumberOfProcessors + ); + + +/** + This service allows the caller to invoke a procedure one of the application processors (AP). This + function uses an optional token parameter to support blocking and non-blocking modes. If the token + is passed into the call, the function will operate in a non-blocking fashion and the caller can + check for completion with CheckOnProcedure or WaitForProcedure. + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Procedure A pointer to the procedure to be run on the designated target + AP of the system. Type EFI_AP_PROCEDURE2 is defined below in + related definitions. + @param[in] CpuNumber The zero-based index of the processor number of the target + AP, on which the code stream is supposed to run. If the number + points to the calling processor then it will not run the + supplied code. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for this AP to + finish execution of Procedure, either for blocking or + non-blocking mode. Zero means infinity. If the timeout + expires before this AP returns from Procedure, then Procedure + on the AP is terminated. If the timeout expires in blocking + mode, the call returns EFI_TIMEOUT. If the timeout expires + in non-blocking mode, the timeout determined can be through + CheckOnProcedure or WaitForProcedure. + Note that timeout support is optional. Whether an + implementation supports this feature, can be determined via + the Attributes data member. + @param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code + that is run by the AP. It is an optional common mailbox + between APs and the caller to share information. + @param[in,out] Token This is parameter is broken into two components: + 1.Token->Completion is an optional parameter that allows the + caller to execute the procedure in a blocking or non-blocking + fashion. If it is NULL the call is blocking, and the call will + not return until the AP has completed the procedure. If the + token is not NULL, the call will return immediately. The caller + can check whether the procedure has completed with + CheckOnProcedure or WaitForProcedure. + 2.Token->Status The implementation updates the address pointed + at by this variable with the status code returned by Procedure + when it completes execution on the target AP, or with EFI_TIMEOUT + if the Procedure fails to complete within the optional timeout. + The implementation will update this variable with EFI_NOT_READY + prior to starting Procedure on the target AP + @param[in,out] CPUStatus This optional pointer may be used to get the status code returned + by Procedure when it completes execution on the target AP, or with + EFI_TIMEOUT if the Procedure fails to complete within the optional + timeout. The implementation will update this variable with + EFI_NOT_READY prior to starting Procedure on the target AP. + + @retval EFI_SUCCESS In the blocking case, this indicates that Procedure has completed + execution on the target AP. + In the non-blocking case this indicates that the procedure has + been successfully scheduled for execution on the target AP. + @retval EFI_INVALID_PARAMETER The input arguments are out of range. Either the target AP is the + caller of the function, or the Procedure or Token is NULL + @retval EFI_NOT_READY If the target AP is busy executing another procedure + @retval EFI_ALREADY_STARTED Token is already in use for another procedure + @retval EFI_TIMEOUT In blocking mode, the timeout expired before the specified AP + has finished + @retval EFI_OUT_OF_RESOURCES Could not allocate a required resource. + +**/ +EFI_STATUS +EFIAPI +SmmMpDispatchProcedure ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN EFI_AP_PROCEDURE2 Procedure, + IN UINTN CpuNumber, + IN UINTN TimeoutInMicroseconds, + IN OUT VOID *ProcedureArguments OPTIONAL, + IN OUT MM_COMPLETION *Token, + IN OUT EFI_STATUS *CPUStatus + ); + +/** + This service allows the caller to invoke a procedure on all running application processors (AP) + except the caller. This function uses an optional token parameter to support blocking and + nonblocking modes. If the token is passed into the call, the function will operate in a non-blocking + fashion and the caller can check for completion with CheckOnProcedure or WaitForProcedure. + + It is not necessary for the implementation to run the procedure on every processor on the platform. + Processors that are powered down in such a way that they cannot respond to interrupts, may be + excluded from the broadcast. + + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Procedure A pointer to the code stream to be run on the APs that have + entered MM. Type EFI_AP_PROCEDURE is defined below in related + definitions. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for the APs to finish + execution of Procedure, either for blocking or non-blocking mode. + Zero means infinity. If the timeout expires before all APs return + from Procedure, then Procedure on the failed APs is terminated. If + the timeout expires in blocking mode, the call returns EFI_TIMEOUT. + If the timeout expires in non-blocking mode, the timeout determined + can be through CheckOnProcedure or WaitForProcedure. + Note that timeout support is optional. Whether an implementation + supports this feature can be determined via the Attributes data + member. + @param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code + that is run by the AP. It is an optional common mailbox + between APs and the caller to share information. + @param[in,out] Token This is parameter is broken into two components: + 1.Token->Completion is an optional parameter that allows the + caller to execute the procedure in a blocking or non-blocking + fashion. If it is NULL the call is blocking, and the call will + not return until the AP has completed the procedure. If the + token is not NULL, the call will return immediately. The caller + can check whether the procedure has completed with + CheckOnProcedure or WaitForProcedure. + 2.Token->Status The implementation updates the address pointed + at by this variable with the status code returned by Procedure + when it completes execution on the target AP, or with EFI_TIMEOUT + if the Procedure fails to complete within the optional timeout. + The implementation will update this variable with EFI_NOT_READY + prior to starting Procedure on the target AP + @param[in,out] CPUStatus This optional pointer may be used to get the individual status + returned by every AP that participated in the broadcast. This + parameter if used provides the base address of an array to hold + the EFI_STATUS value of each AP in the system. The size of the + array can be ascertained by the GetNumberOfProcessors function. + As mentioned above, the broadcast may not include every processor + in the system. Some implementations may exclude processors that + have been powered down in such a way that they are not responsive + to interrupts. Additionally the broadcast excludes the processor + which is making the BroadcastProcedure call. For every excluded + processor, the array entry must contain a value of EFI_NOT_STARTED + + @retval EFI_SUCCESS In the blocking case, this indicates that Procedure has completed + execution on the APs. + In the non-blocking case this indicates that the procedure has + been successfully scheduled for execution on the APs. + @retval EFI_INVALID_PARAMETER The Procedure or Token is NULL + @retval EFI_NOT_READY If the target AP is busy executing another procedure + @retval EFI_ALREADY_STARTED Token is already in use for another procedure + @retval EFI_TIMEOUT In blocking mode, the timeout expired before the specified AP + has finished + @retval EFI_OUT_OF_RESOURCES Could not allocate a required resource. + +**/ +EFI_STATUS +EFIAPI +SmmMpBroadcastProcedure ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN EFI_AP_PROCEDURE2 Procedure, + IN UINTN TimeoutInMicroseconds, + IN OUT VOID *ProcedureArguments OPTIONAL, + IN OUT MM_COMPLETION *Token, + IN OUT EFI_STATUS *CPUStatus + ); + + +/** + This service allows the caller to set a startup procedure that will be executed when an AP powers + up from a state where core configuration and context is lost. The procedure is execution has the + following properties: + 1. The procedure executes before the processor is handed over to the operating system. + 2. All processors execute the same startup procedure. + 3. The procedure may run in parallel with other procedures invoked through the functions in this + protocol, or with processors that are executing an MM handler or running in the operating system. + + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Procedure A pointer to the code stream to be run on the designated target AP + of the system. Type EFI_AP_PROCEDURE is defined below in Volume 2 + with the related definitions of + EFI_MP_SERVICES_PROTOCOL.StartupAllAPs. + If caller may pass a value of NULL to deregister any existing + startup procedure. + @param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code that is + run by the AP. It is an optional common mailbox between APs and + the caller to share information + + @retval EFI_SUCCESS The Procedure has been set successfully. + @retval EFI_INVALID_PARAMETER The Procedure is NULL but ProcedureArguments not NULL. +**/ +EFI_STATUS +EFIAPI +SmmMpSetStartupProcedure ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN EFI_AP_PROCEDURE Procedure, + IN OUT VOID *ProcedureArguments OPTIONAL + ); + +/** + When non-blocking execution of a procedure on an AP is invoked with DispatchProcedure, + via the use of a token, this function can be used to check for completion of the procedure on the AP. + The function takes the token that was passed into the DispatchProcedure call. If the procedure + is complete, and therefore it is now possible to run another procedure on the same AP, this function + returns EFI_SUCESS. In this case the status returned by the procedure that executed on the AP is + returned in the token's Status field. If the procedure has not yet completed, then this function + returns EFI_NOT_READY. + + When a non-blocking execution of a procedure is invoked with BroadcastProcedure, via the + use of a token, this function can be used to check for completion of the procedure on all the + broadcast APs. The function takes the token that was passed into the BroadcastProcedure + call. If the procedure is complete on all broadcast APs this function returns EFI_SUCESS. In this + case the Status field in the token passed into the function reflects the overall result of the + invocation, which may be EFI_SUCCESS, if all executions succeeded, or the first observed failure. + If the procedure has not yet completed on the broadcast APs, the function returns + EFI_NOT_READY. + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Token This parameter describes the token that was passed into + DispatchProcedure or BroadcastProcedure. + + @retval EFI_SUCCESS Procedure has completed. + @retval EFI_NOT_READY The Procedure has not completed. + @retval EFI_INVALID_PARAMETER Token or Token->Completion is NULL + @retval EFI_NOT_FOUND Token is not currently in use for a non-blocking call + +**/ +EFI_STATUS +EFIAPI +SmmMpCheckForProcedure ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN MM_COMPLETION Token + ); + +/** + When a non-blocking execution of a procedure on an AP is invoked via DispatchProcedure, + this function will block the caller until the remote procedure has completed on the designated AP. + The non-blocking procedure invocation is identified by the Token parameter, which must match the + token that used when DispatchProcedure was called. Upon completion the status returned by + the procedure that executed on the AP is used to update the token's Status field. + + When a non-blocking execution of a procedure on an AP is invoked via BroadcastProcedure + this function will block the caller until the remote procedure has completed on all of the APs that + entered MM. The non-blocking procedure invocation is identified by the Token parameter, which + must match the token that used when BroadcastProcedure was called. Upon completion the + overall status returned by the procedures that executed on the broadcast AP is used to update the + token's Status field. The overall status may be EFI_SUCCESS, if all executions succeeded, or the + first observed failure. + + + @param[in] This The EFI_MM_MP_PROTOCOL instance. + @param[in] Token This parameter describes the token that was passed into + DispatchProcedure or BroadcastProcedure. + + @retval EFI_SUCCESS Procedure has completed. + @retval EFI_INVALID_PARAMETER Token or Token->Completion is NULL + @retval EFI_NOT_FOUND Token is not currently in use for a non-blocking call + +**/ +EFI_STATUS +EFIAPI +SmmMpWaitForProcedure ( + IN CONST EFI_MM_MP_PROTOCOL *This, + IN MM_COMPLETION Token + ); + +#endif -- 2.21.0.windows.1 ^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [Patch v4 2/2] UefiCpuPkg/PiSmmCpuDxeSmm: Enable MM MP Protocol. 2019-07-08 14:01 ` [Patch v4 2/2] UefiCpuPkg/PiSmmCpuDxeSmm: Enable MM MP Protocol Dong, Eric @ 2019-07-09 5:51 ` Ni, Ray 0 siblings, 0 replies; 5+ messages in thread From: Ni, Ray @ 2019-07-09 5:51 UTC (permalink / raw) To: Dong, Eric, devel@edk2.groups.io; +Cc: Laszlo Ersek Some comments that could help to refine the code: 1. IsTokenInUse() can use linked list APIs as what the other code in your patch does. 2. IsTokenInUse() is called from InternalSmmStartupAllAPs() and InternalSmmStartupThisAp(). Can we replace if (IsTokenInUse()) {return EFI_ALREADY_STARTED;} with ASSERT (!IsTokenInUse())? Because the token is allocated every time when calling the two Internal functions. The allocation is done by PiSmmCpu driver not the caller. If IsTokenInUse() returns TRUE, that's PiSmmCpu driver's bug, which doesn't need to report to caller. 3. I think we could have one CreateToken() to replace InsertToken(). It allocates & initializes the token and inserts to the linked list. 4. FreeToken() can be FreeTokens(). It can be called in BSPHandler() instead of SmiRendezvous(). 5. Many code use below check: Index != gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu && *(mSmmMpSyncData->CpuData[Index].Present Can you please create a small function like IsPresentAp() for this check? 6. Status local variable is not necessary in below code. Status = InternalSmmStartupThisAp (ProcedureWrapper, CpuIndex, &Wrapper, NULL, 0, NULL); return Status; 7. Regarding mApWrapperFunc and gTokenList, can you please put them in gSmmCpuPrivate? > -----Original Message----- > From: Dong, Eric > Sent: Monday, July 8, 2019 10:02 PM > To: devel@edk2.groups.io > Cc: Ni, Ray <ray.ni@intel.com>; Laszlo Ersek <lersek@redhat.com> > Subject: [Patch v4 2/2] UefiCpuPkg/PiSmmCpuDxeSmm: Enable MM MP > Protocol. > > v4 changes: > 1. Use link list to save the token info. > > v3 changes: > 1. Fix Token clean up too early caused CheckProcedure return error. > > v2 changes: > 1. Remove some duplicated global variables. > 2. Enhance token design to support multiple task trig for different APs at the > same time. > > V1 changes: > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1937 > > Add MM Mp Protocol in PiSmmCpuDxeSmm driver. > > Cc: Ray Ni <ray.ni@intel.com> > Cc: Laszlo Ersek <lersek@redhat.com> > Signed-off-by: Eric Dong <eric.dong@intel.com> > --- > UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c | 558 > ++++++++++++++++++- > UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c | 16 + > UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h | 175 +++++- > UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf | 3 + > UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c | 376 +++++++++++++ > UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h | 286 ++++++++++ > 6 files changed, 1392 insertions(+), 22 deletions(-) > create mode 100644 UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c > create mode 100644 UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h > > diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c > b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c > index 64fb4d6344..8652ae1696 100644 > --- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c > +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c > @@ -22,6 +22,8 @@ UINTN mSemaphoreSize; > SPIN_LOCK *mPFLock = NULL; > SMM_CPU_SYNC_MODE mCpuSmmSyncMode; > BOOLEAN mMachineCheckSupported = FALSE; > +PROCEDURE_WRAPPER *mApWrapperFunc; > +LIST_ENTRY gTokenList; > > /** > Performs an atomic compare exchange operation to get semaphore. > @@ -347,6 +349,128 @@ ReplaceOSMtrrs ( > MtrrSetAllMtrrs (&gSmiMtrrs); > } > > +/** > + Wheck whether task has been finished by all APs. > + > + @param BlockMode Whether did it in block mode or non-block mode. > + > + @retval TRUE Task has been finished by all APs. > + @retval FALSE Task not has been finished by all APs. > + > +**/ > +BOOLEAN > +WaitForAllAPsNotBusy ( > + IN BOOLEAN BlockMode > + ) > +{ > + UINTN Index; > + > + for (Index = mMaxNumberOfCpus; Index-- > 0;) { > + // > + // Ignore BSP and APs which not call in SMM. > + // > + if ((Index == gSmmCpuPrivate- > >SmmCoreEntryContext.CurrentlyExecutingCpu) || (!*(mSmmMpSyncData- > >CpuData[Index].Present))) { > + continue; > + } > + > + if (BlockMode) { > + AcquireSpinLock(mSmmMpSyncData->CpuData[Index].Busy); > + ReleaseSpinLock(mSmmMpSyncData->CpuData[Index].Busy); > + } else { > + if (AcquireSpinLockOrFail (mSmmMpSyncData->CpuData[Index].Busy)) { > + ReleaseSpinLock(mSmmMpSyncData->CpuData[Index].Busy); > + } else { > + return FALSE; > + } > + } > + } > + > + return TRUE; > +} > + > +/** > + Check whether execute in single AP or all APs. > + > + Compare two Tokens used by different APs to know whether in > StartAllAps call. > + > + Whether is an valid AP base on AP's Present flag. > + > + @retval TRUE IN StartAllAps call. > + @retval FALSE Not in StartAllAps call. > + > +**/ > +BOOLEAN > +InStartAllApsCall ( > + VOID > + ) > +{ > + UINTN ApIndex; > + UINTN ApIndex2; > + > + for (ApIndex = mMaxNumberOfCpus; ApIndex-- > 0;) { > + if ((ApIndex != gSmmCpuPrivate- > >SmmCoreEntryContext.CurrentlyExecutingCpu) && > + *(mSmmMpSyncData->CpuData[ApIndex].Present) && > + (mSmmMpSyncData->CpuData[ApIndex].Token != NULL)) { > + for (ApIndex2 = ApIndex; ApIndex2-- > 0;) { > + if ((ApIndex2 != gSmmCpuPrivate- > >SmmCoreEntryContext.CurrentlyExecutingCpu) && > + *(mSmmMpSyncData->CpuData[ApIndex2].Present) && > + (mSmmMpSyncData->CpuData[ApIndex2].Token != NULL)) { > + return mSmmMpSyncData->CpuData[ApIndex2].Token == > mSmmMpSyncData->CpuData[ApIndex].Token; > + } > + } > + } > + } > + > + return FALSE; > +} > + > +/** > + Clean up the status flags used during executing the procedure. > + > + @param CpuIndex The AP index which calls this function. > + > +**/ > +VOID > +ReleaseToken ( > + IN UINTN CpuIndex > + ) > +{ > + UINTN Index; > + BOOLEAN Released; > + > + if (InStartAllApsCall ()) { > + // > + // In Start All APs mode, make sure all APs have finished task. > + // > + if (WaitForAllAPsNotBusy (FALSE)) { > + // > + // Clean the flags update in the function call. > + // > + Released = FALSE; > + for (Index = mMaxNumberOfCpus; Index-- > 0;) { > + // > + // Only In SMM APs need to be clean up. > + // > + if (mSmmMpSyncData->CpuData[Index].Present && > mSmmMpSyncData->CpuData[Index].Token != NULL) { > + if (!Released) { > + ReleaseSpinLock (mSmmMpSyncData->CpuData[Index].Token); > + Released = TRUE; > + } > + mSmmMpSyncData->CpuData[Index].Token = NULL; > + } > + } > + } > + } else { > + // > + // In single AP mode. > + // > + if (mSmmMpSyncData->CpuData[CpuIndex].Token != NULL) { > + ReleaseSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Token); > + mSmmMpSyncData->CpuData[CpuIndex].Token = NULL; > + } > + } > +} > + > /** > SMI handler for BSP. > > @@ -476,12 +600,7 @@ BSPHandler ( > // > // Make sure all APs have completed their pending none-block tasks > // > - for (Index = mMaxNumberOfCpus; Index-- > 0;) { > - if (Index != CpuIndex && *(mSmmMpSyncData- > >CpuData[Index].Present)) { > - AcquireSpinLock (mSmmMpSyncData->CpuData[Index].Busy); > - ReleaseSpinLock (mSmmMpSyncData->CpuData[Index].Busy); > - } > - } > + WaitForAllAPsNotBusy (TRUE); > > // > // Perform the remaining tasks > @@ -604,6 +723,7 @@ APHandler ( > UINT64 Timer; > UINTN BspIndex; > MTRR_SETTINGS Mtrrs; > + EFI_STATUS ProcedureStatus; > > // > // Timeout BSP > @@ -730,14 +850,19 @@ APHandler ( > // > // Invoke the scheduled procedure > // > - (*mSmmMpSyncData->CpuData[CpuIndex].Procedure) ( > - (VOID*)mSmmMpSyncData->CpuData[CpuIndex].Parameter > - ); > + ProcedureStatus = (*mSmmMpSyncData- > >CpuData[CpuIndex].Procedure) ( > + (VOID*)mSmmMpSyncData->CpuData[CpuIndex].Parameter > + ); > + if (mSmmMpSyncData->CpuData[CpuIndex].Status != NULL) { > + *mSmmMpSyncData->CpuData[CpuIndex].Status = ProcedureStatus; > + } > > // > // Release BUSY > // > ReleaseSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy); > + > + ReleaseToken (CpuIndex); > } > > if (SmmCpuFeaturesNeedConfigureMtrrs()) { > @@ -906,13 +1031,136 @@ Gen4GPageTable ( > return (UINT32)(UINTN)PageTable; > } > > +/** > + Checks whether the input token is the current used token. > + > + @param[in] Token This parameter describes the token that was passed > into DispatchProcedure or > + BroadcastProcedure. > + > + @retval TRUE The input token is the current used token. > + @retval FALSE The input token is not the current used token. > +**/ > +BOOLEAN > +IsTokenInUse ( > + IN SPIN_LOCK *Token > + ) > +{ > + LIST_ENTRY *Link; > + PROCEDURE_TOKEN *ProcToken; > + > + if (Token == NULL) { > + return FALSE; > + } > + > + for (Link = gTokenList.ForwardLink; Link != &gTokenList; Link = Link- > >ForwardLink) { > + ProcToken = PROCEDURE_TOKEN_FROM_LINK (Link); > + > + if (ProcToken->ProcedureToken == Token) { > + return TRUE; > + } > + } > + > + return FALSE; > +} > + > +/** > + Insert the token to the maintained list. > + > + @param[in] Token This parameter describes the token that was > passed into DispatchProcedure or > + BroadcastProcedure. > + > +**/ > +VOID > +InsertToken ( > + IN SPIN_LOCK *Token > + ) > +{ > + PROCEDURE_TOKEN *ProcToken; > + > + ProcToken = AllocatePool (sizeof (PROCEDURE_TOKEN)); > + ASSERT (ProcToken != NULL); > + > + ProcToken->Signature = PROCEDURE_TOKEN_SIGNATURE; > + ProcToken->ProcedureToken = Token; > + > + InsertTailList (&gTokenList, &ProcToken->Link); > +} > + > +/** > + Free the tokens in the maintained list. > + > +**/ > +VOID > +FreeToken ( > + VOID > + ) > +{ > + LIST_ENTRY *Link; > + PROCEDURE_TOKEN *ProcToken; > + > + while (!IsListEmpty (&gTokenList)) { > + Link = GetFirstNode (&gTokenList); > + ProcToken = PROCEDURE_TOKEN_FROM_LINK (Link); > + > + RemoveEntryList (&ProcToken->Link); > + > + FreePool ((VOID *)ProcToken->ProcedureToken); > + FreePool (ProcToken); > + } > +} > + > +/** > + Checks status of specified AP. > + > + This function checks whether the specified AP has finished the task > assigned > + by StartupThisAP(), and whether timeout expires. > + > + @param[in] Token This parameter describes the token that was > passed into DispatchProcedure or > + BroadcastProcedure. > + > + @retval EFI_SUCCESS Specified AP has finished task assigned by > StartupThisAPs(). > + @retval EFI_NOT_READY Specified AP has not finished task and > timeout has not expired. > +**/ > +EFI_STATUS > +IsApReady ( > + IN SPIN_LOCK *Token > + ) > +{ > + if (AcquireSpinLockOrFail (Token)) { > + ReleaseSpinLock (Token); > + return EFI_SUCCESS; > + } > + > + return EFI_NOT_READY; > +} > + > /** > Schedule a procedure to run on the specified CPU. > > @param[in] Procedure The address of the procedure to run > @param[in] CpuIndex Target CPU Index > - @param[in, out] ProcArguments The parameter to pass to the > procedure > - @param[in] BlockingMode Startup AP in blocking mode or not > + @param[in,out] ProcArguments The parameter to pass to the > procedure > + @param[in] Token This is an optional parameter that allows > the caller to execute the > + procedure in a blocking or non-blocking fashion. If it is > NULL the > + call is blocking, and the call will not return until the AP > has > + completed the procedure. If the token is not NULL, > the call will > + return immediately. The caller can check whether the > procedure has > + completed with CheckOnProcedure or > WaitForProcedure. > + @param[in] TimeoutInMicroseconds Indicates the time limit in > microseconds for the APs to finish > + execution of Procedure, either for blocking or non- > blocking mode. > + Zero means infinity. If the timeout expires before all > APs return > + from Procedure, then Procedure on the failed APs is > terminated. If > + the timeout expires in blocking mode, the call returns > EFI_TIMEOUT. > + If the timeout expires in non-blocking mode, the > timeout determined > + can be through CheckOnProcedure or > WaitForProcedure. > + Note that timeout support is optional. Whether an > implementation > + supports this feature can be determined via the > Attributes data > + member. > + @param[in,out] CpuStatus This optional pointer may be used to > get the status code returned > + by Procedure when it completes execution on the > target AP, or with > + EFI_TIMEOUT if the Procedure fails to complete > within the optional > + timeout. The implementation will update this variable > with > + EFI_NOT_READY prior to starting Procedure on the > target AP. > > @retval EFI_INVALID_PARAMETER CpuNumber not valid > @retval EFI_INVALID_PARAMETER CpuNumber specifying BSP > @@ -923,10 +1171,12 @@ Gen4GPageTable ( > **/ > EFI_STATUS > InternalSmmStartupThisAp ( > - IN EFI_AP_PROCEDURE Procedure, > - IN UINTN CpuIndex, > - IN OUT VOID *ProcArguments OPTIONAL, > - IN BOOLEAN BlockingMode > + IN EFI_AP_PROCEDURE2 Procedure, > + IN UINTN CpuIndex, > + IN OUT VOID *ProcArguments OPTIONAL, > + IN SPIN_LOCK *Token, > + IN UINTN TimeoutInMicroseconds, > + IN OUT EFI_STATUS *CpuStatus > ) > { > if (CpuIndex >= gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus) > { > @@ -952,24 +1202,195 @@ InternalSmmStartupThisAp ( > } > return EFI_INVALID_PARAMETER; > } > + if ((TimeoutInMicroseconds != 0) && ((mSmmMp.Attributes & > EFI_MM_MP_TIMEOUT_SUPPORTED) == 0)) { > + return EFI_INVALID_PARAMETER; > + } > + if (Procedure == NULL) { > + return EFI_INVALID_PARAMETER; > + } > + if (IsTokenInUse (Token)) { > + return EFI_ALREADY_STARTED; > + } > > - if (BlockingMode) { > + if (Token == NULL) { > AcquireSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy); > } else { > if (!AcquireSpinLockOrFail (mSmmMpSyncData- > >CpuData[CpuIndex].Busy)) { > - DEBUG((DEBUG_ERROR, "mSmmMpSyncData->CpuData[%d].Busy\n", > CpuIndex)); > - return EFI_INVALID_PARAMETER; > + DEBUG((DEBUG_ERROR, "Can't acquire mSmmMpSyncData- > >CpuData[%d].Busy\n", CpuIndex)); > + ReleaseSpinLock (Token); > + return EFI_NOT_READY; > } > + > + AcquireSpinLock (Token); > + InsertToken (Token); > } > > mSmmMpSyncData->CpuData[CpuIndex].Procedure = Procedure; > mSmmMpSyncData->CpuData[CpuIndex].Parameter = ProcArguments; > + mSmmMpSyncData->CpuData[CpuIndex].Token = Token; > + mSmmMpSyncData->CpuData[CpuIndex].Status = CpuStatus; > + if (mSmmMpSyncData->CpuData[CpuIndex].Status != NULL) { > + *mSmmMpSyncData->CpuData[CpuIndex].Status = EFI_NOT_READY; > + } > + > ReleaseSemaphore (mSmmMpSyncData->CpuData[CpuIndex].Run); > > - if (BlockingMode) { > + if (Token == NULL) { > AcquireSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy); > ReleaseSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy); > } > + > + return EFI_SUCCESS; > +} > + > +/** > + Worker function to execute a caller provided function on all enabled APs. > + > + @param[in] Procedure A pointer to the function to be run on > + enabled APs of the system. > + @param[in] TimeoutInMicroseconds Indicates the time limit in > microseconds for > + APs to return from Procedure, either for > + blocking or non-blocking mode. > + @param[in,out] ProcedureArguments The parameter passed into > Procedure for > + all APs. > + @param[in,out] Token This is an optional parameter that allows > the caller to execute the > + procedure in a blocking or non-blocking fashion. If it is > NULL the > + call is blocking, and the call will not return until the AP > has > + completed the procedure. If the token is not NULL, the > call will > + return immediately. The caller can check whether the > procedure has > + completed with CheckOnProcedure or > WaitForProcedure. > + @param[in,out] CPUStatus This optional pointer may be used to get > the status code returned > + by Procedure when it completes execution on the > target AP, or with > + EFI_TIMEOUT if the Procedure fails to complete within > the optional > + timeout. The implementation will update this variable > with > + EFI_NOT_READY prior to starting Procedure on the > target AP. > + > + > + @retval EFI_SUCCESS In blocking mode, all APs have finished before > + the timeout expired. > + @retval EFI_SUCCESS In non-blocking mode, function has been > dispatched > + to all enabled APs. > + @retval others Failed to Startup all APs. > + > +**/ > +EFI_STATUS > +InternalSmmStartupAllAPs ( > + IN EFI_AP_PROCEDURE2 Procedure, > + IN UINTN TimeoutInMicroseconds, > + IN OUT VOID *ProcedureArguments OPTIONAL, > + IN OUT SPIN_LOCK *Token, > + IN OUT EFI_STATUS *CPUStatus > + ) > +{ > + UINTN Index; > + UINTN CpuCount; > + > + if ((TimeoutInMicroseconds != 0) && ((mSmmMp.Attributes & > EFI_MM_MP_TIMEOUT_SUPPORTED) == 0)) { > + return EFI_INVALID_PARAMETER; > + } > + if (Procedure == NULL) { > + return EFI_INVALID_PARAMETER; > + } > + if (IsTokenInUse (Token)) { > + return EFI_ALREADY_STARTED; > + } > + > + CpuCount = 0; > + for (Index = mMaxNumberOfCpus; Index-- > 0;) { > + if (*mSmmMpSyncData->CpuData[Index].Present && (Index != > gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu)) { > + CpuCount ++; > + > + if (gSmmCpuPrivate->Operation[Index] == SmmCpuRemove) { > + return EFI_INVALID_PARAMETER; > + } > + > + if (!AcquireSpinLockOrFail(mSmmMpSyncData->CpuData[Index].Busy)) { > + return EFI_NOT_READY; > + } > + ReleaseSpinLock (mSmmMpSyncData->CpuData[Index].Busy); > + } > + } > + if (CpuCount == 0) { > + return EFI_NOT_STARTED; > + } > + > + // > + // Make sure all BUSY should be acquired. > + // > + // Because former code already check mSmmMpSyncData- > >CpuData[***].Busy for each AP. > + // Here code always use AcquireSpinLock instead of AcquireSpinLockOrFail > for not > + // block mode. > + // > + for (Index = mMaxNumberOfCpus; Index-- > 0;) { > + if (Index != gSmmCpuPrivate- > >SmmCoreEntryContext.CurrentlyExecutingCpu && *(mSmmMpSyncData- > >CpuData[Index].Present)) { > + AcquireSpinLock (mSmmMpSyncData->CpuData[Index].Busy); > + } > + } > + > + if (Token != NULL) { > + AcquireSpinLock (Token); > + InsertToken (Token); > + } > + > + for (Index = mMaxNumberOfCpus; Index-- > 0;) { > + if (Index != gSmmCpuPrivate- > >SmmCoreEntryContext.CurrentlyExecutingCpu && *(mSmmMpSyncData- > >CpuData[Index].Present)) { > + mSmmMpSyncData->CpuData[Index].Procedure = > (EFI_AP_PROCEDURE2) Procedure; > + mSmmMpSyncData->CpuData[Index].Parameter = > ProcedureArguments; > + mSmmMpSyncData->CpuData[Index].Token = Token; > + if (CPUStatus != NULL) { > + mSmmMpSyncData->CpuData[Index].Status = &CPUStatus[Index]; > + if (mSmmMpSyncData->CpuData[Index].Status != NULL) { > + *mSmmMpSyncData->CpuData[Index].Status = EFI_NOT_READY; > + } > + } > + } else { > + // > + // PI spec requirement: > + // For every excluded processor, the array entry must contain a value of > EFI_NOT_STARTED. > + // > + if (CPUStatus != NULL) { > + CPUStatus[Index] = EFI_NOT_STARTED; > + } > + } > + } > + > + ReleaseAllAPs (); > + > + if (Token == NULL) { > + // > + // Make sure all APs have completed their tasks. > + // > + WaitForAllAPsNotBusy (TRUE); > + } > + > + return EFI_SUCCESS; > +} > + > +/** > + ISO C99 6.5.2.2 "Function calls", paragraph 9: > + If the function is defined with a type that is not compatible with > + the type (of the expression) pointed to by the expression that > + denotes the called function, the behavior is undefined. > + > + So add below wrapper function to convert between EFI_AP_PROCEDURE > + and EFI_AP_PROCEDURE2. > + > + Wrapper for Procedures. > + > + @param[in] Buffer Pointer to PROCEDURE_WRAPPER buffer. > + > +**/ > +EFI_STATUS > +EFIAPI > +ProcedureWrapper ( > + IN OUT VOID *Buffer > + ) > +{ > + PROCEDURE_WRAPPER *Wrapper; > + > + Wrapper = Buffer; > + Wrapper->Procedure (Wrapper->ProcedureArgument); > + > return EFI_SUCCESS; > } > > @@ -995,7 +1416,18 @@ SmmBlockingStartupThisAp ( > IN OUT VOID *ProcArguments OPTIONAL > ) > { > - return InternalSmmStartupThisAp(Procedure, CpuIndex, ProcArguments, > TRUE); > + PROCEDURE_WRAPPER Wrapper; > + EFI_STATUS Status; > + > + Wrapper.Procedure = Procedure; > + Wrapper.ProcedureArgument = ProcArguments; > + > + // > + // Use wrapper function to convert EFI_AP_PROCEDURE to > EFI_AP_PROCEDURE2. > + // > + Status = InternalSmmStartupThisAp (ProcedureWrapper, CpuIndex, > &Wrapper, NULL, 0, NULL); > + > + return Status; > } > > /** > @@ -1020,7 +1452,28 @@ SmmStartupThisAp ( > IN OUT VOID *ProcArguments OPTIONAL > ) > { > - return InternalSmmStartupThisAp(Procedure, CpuIndex, ProcArguments, > FeaturePcdGet (PcdCpuSmmBlockStartupThisAp)); > + SPIN_LOCK *CpuToken; > + UINTN SpinLockSize; > + > + mApWrapperFunc[CpuIndex].Procedure = Procedure; > + mApWrapperFunc[CpuIndex].ProcedureArgument = ProcArguments; > + > + if (FeaturePcdGet (PcdCpuSmmBlockStartupThisAp)) { > + CpuToken = NULL; > + } else { > + SpinLockSize = GetSpinLockProperties (); > + CpuToken = AllocatePool (SpinLockSize); > + ASSERT (CpuToken != NULL); > + if (CpuToken == NULL) { > + return EFI_OUT_OF_RESOURCES; > + } > + InitializeSpinLock ((SPIN_LOCK *)(CpuToken)); > + } > + > + // > + // Use wrapper function to convert EFI_AP_PROCEDURE to > EFI_AP_PROCEDURE2. > + // > + return InternalSmmStartupThisAp (ProcedureWrapper, CpuIndex, > &mApWrapperFunc[CpuIndex], CpuToken, 0, NULL); > } > > /** > @@ -1112,6 +1565,13 @@ SmiRendezvous ( > Cr2 = 0; > SaveCr2 (&Cr2); > > + // > + // Call the user register Startup function first. > + // > + if (mSmmMpSyncData->StartupProcedure != NULL) { > + mSmmMpSyncData->StartupProcedure (mSmmMpSyncData- > >StartupProcArgs); > + } > + > // > // Perform CPU specific entry hooks > // > @@ -1250,12 +1710,31 @@ SmiRendezvous ( > Exit: > SmmCpuFeaturesRendezvousExit (CpuIndex); > > + if (CpuIndex == gSmmCpuPrivate- > >SmmCoreEntryContext.CurrentlyExecutingCpu) { > + FreeToken (); > + } > + > // > // Restore Cr2 > // > RestoreCr2 (Cr2); > } > > +/** > + Allocate buffer for SpinLock and Wrapper function buffer. > + > +**/ > +VOID > +InitializeDataForMmMp ( > + VOID > + ) > +{ > + mApWrapperFunc = AllocatePool (sizeof (PROCEDURE_WRAPPER) * > gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus); > + ASSERT (mApWrapperFunc != NULL); > + > + InitializeListHead (&gTokenList); > +} > + > /** > Allocate buffer for all semaphores and spin locks. > > @@ -1469,3 +1948,40 @@ RegisterSmmEntry ( > gSmmCpuPrivate->SmmCoreEntry = SmmEntryPoint; > return EFI_SUCCESS; > } > + > +/** > + > + Register the SMM Foundation entry point. > + > + @param[in] Procedure A pointer to the code stream to be run on > the designated target AP > + of the system. Type EFI_AP_PROCEDURE is defined > below in Volume 2 > + with the related definitions of > + EFI_MP_SERVICES_PROTOCOL.StartupAllAPs. > + If caller may pass a value of NULL to deregister any > existing > + startup procedure. > + @param[in] ProcedureArguments Allows the caller to pass a list of > parameters to the code that is > + run by the AP. It is an optional common mailbox > between APs and > + the caller to share information > + > + @retval EFI_SUCCESS The Procedure has been set successfully. > + @retval EFI_INVALID_PARAMETER The Procedure is NULL but > ProcedureArguments not NULL. > + > +**/ > +EFI_STATUS > +RegisterStartupProcedure ( > + IN EFI_AP_PROCEDURE Procedure, > + IN VOID *ProcedureArguments OPTIONAL > + ) > +{ > + if (Procedure == NULL && ProcedureArguments != NULL) { > + return EFI_INVALID_PARAMETER; > + } > + if (mSmmMpSyncData == NULL) { > + return EFI_NOT_READY; > + } > + > + mSmmMpSyncData->StartupProcedure = Procedure; > + mSmmMpSyncData->StartupProcArgs = ProcedureArguments; > + > + return EFI_SUCCESS; > +} > diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c > b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c > index 2f7d777ee7..bb9b0822f8 100644 > --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c > +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c > @@ -996,6 +996,22 @@ PiCpuSmmEntry ( > ); > ASSERT_EFI_ERROR (Status); > > + // > + // Initialize global buffer for MM MP. > + // > + InitializeDataForMmMp (); > + > + // > + // Install the SMM Mp Protocol into SMM protocol database > + // > + Status = gSmst->SmmInstallProtocolInterface ( > + &mSmmCpuHandle, > + &gEfiMmMpProtocolGuid, > + EFI_NATIVE_INTERFACE, > + &mSmmMp > + ); > + ASSERT_EFI_ERROR (Status); > + > // > // Expose address of CPU Hot Plug Data structure if CPU hot plug is > supported. > // > diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h > b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h > index 2bb35a424d..eb7e38ea94 100644 > --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h > +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h > @@ -20,6 +20,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent > #include <Protocol/SmmReadyToLock.h> > #include <Protocol/SmmCpuService.h> > #include <Protocol/SmmMemoryAttribute.h> > +#include <Protocol/MmMp.h> > > #include <Guid/AcpiS3Context.h> > #include <Guid/MemoryAttributesTable.h> > @@ -221,11 +222,31 @@ typedef struct { > EFI_SMM_CONFIGURATION_PROTOCOL SmmConfiguration; > } SMM_CPU_PRIVATE_DATA; > > +// > +// Wrapper used to convert EFI_AP_PROCEDURE2 and EFI_AP_PROCEDURE. > +// > +typedef struct { > + EFI_AP_PROCEDURE Procedure; > + VOID *ProcedureArgument; > +} PROCEDURE_WRAPPER; > + > +#define PROCEDURE_TOKEN_SIGNATURE SIGNATURE_32 ('P', 'R', 'T', 'S') > + > +typedef struct { > + UINTN Signature; > + LIST_ENTRY Link; > + > + SPIN_LOCK *ProcedureToken; > +} PROCEDURE_TOKEN; > + > +#define PROCEDURE_TOKEN_FROM_LINK(a) CR (a, PROCEDURE_TOKEN, > Link, PROCEDURE_TOKEN_SIGNATURE) > + > extern SMM_CPU_PRIVATE_DATA *gSmmCpuPrivate; > extern CPU_HOT_PLUG_DATA mCpuHotPlugData; > extern UINTN mMaxNumberOfCpus; > extern UINTN mNumberOfCpus; > extern EFI_SMM_CPU_PROTOCOL mSmmCpu; > +extern EFI_MM_MP_PROTOCOL mSmmMp; > > /// > /// The mode of the CPU at the time an SMI occurs > @@ -363,10 +384,12 @@ SmmRelocationSemaphoreComplete ( > /// > typedef struct { > SPIN_LOCK *Busy; > - volatile EFI_AP_PROCEDURE Procedure; > + volatile EFI_AP_PROCEDURE2 Procedure; > volatile VOID *Parameter; > volatile UINT32 *Run; > volatile BOOLEAN *Present; > + SPIN_LOCK *Token; > + EFI_STATUS *Status; > } SMM_CPU_DATA_BLOCK; > > typedef enum { > @@ -388,6 +411,8 @@ typedef struct { > volatile SMM_CPU_SYNC_MODE EffectiveSyncMode; > volatile BOOLEAN SwitchBsp; > volatile BOOLEAN *CandidateBsp; > + EFI_AP_PROCEDURE StartupProcedure; > + VOID *StartupProcArgs; > } SMM_DISPATCHER_MP_SYNC_DATA; > > #define SMM_PSD_OFFSET 0xfb00 > @@ -410,6 +435,7 @@ typedef struct { > SPIN_LOCK *Busy; > volatile UINT32 *Run; > volatile BOOLEAN *Present; > + SPIN_LOCK *Token; > } SMM_CPU_SEMAPHORE_CPU; > > /// > @@ -1259,4 +1285,151 @@ RestoreCr2 ( > IN UINTN Cr2 > ); > > +/** > + Schedule a procedure to run on the specified CPU. > + > + @param[in] Procedure The address of the procedure to run > + @param[in] CpuIndex Target CPU Index > + @param[in,out] ProcArguments The parameter to pass to the > procedure > + @param[in,out] Token This is an optional parameter that allows > the caller to execute the > + procedure in a blocking or non-blocking fashion. If it is > NULL the > + call is blocking, and the call will not return until the AP > has > + completed the procedure. If the token is not NULL, > the call will > + return immediately. The caller can check whether the > procedure has > + completed with CheckOnProcedure or > WaitForProcedure. > + @param[in] TimeoutInMicroseconds Indicates the time limit in > microseconds for the APs to finish > + execution of Procedure, either for blocking or non- > blocking mode. > + Zero means infinity. If the timeout expires before all > APs return > + from Procedure, then Procedure on the failed APs is > terminated. If > + the timeout expires in blocking mode, the call returns > EFI_TIMEOUT. > + If the timeout expires in non-blocking mode, the > timeout determined > + can be through CheckOnProcedure or > WaitForProcedure. > + Note that timeout support is optional. Whether an > implementation > + supports this feature can be determined via the > Attributes data > + member. > + @param[in,out] CPUStatus This optional pointer may be used to > get the status code returned > + by Procedure when it completes execution on the > target AP, or with > + EFI_TIMEOUT if the Procedure fails to complete > within the optional > + timeout. The implementation will update this variable > with > + EFI_NOT_READY prior to starting Procedure on the > target AP. > + > + @retval EFI_INVALID_PARAMETER CpuNumber not valid > + @retval EFI_INVALID_PARAMETER CpuNumber specifying BSP > + @retval EFI_INVALID_PARAMETER The AP specified by CpuNumber did > not enter SMM > + @retval EFI_INVALID_PARAMETER The AP specified by CpuNumber is > busy > + @retval EFI_SUCCESS The procedure has been successfully > scheduled > + > +**/ > +EFI_STATUS > +InternalSmmStartupThisAp ( > + IN EFI_AP_PROCEDURE2 Procedure, > + IN UINTN CpuIndex, > + IN OUT VOID *ProcArguments OPTIONAL, > + IN SPIN_LOCK *Token, > + IN UINTN TimeoutInMicroseconds, > + IN OUT EFI_STATUS *CpuStatus > + ); > + > +/** > + Checks whether the input token is the current used token. > + > + @param[in] Token This parameter describes the token that was passed > into DispatchProcedure or > + BroadcastProcedure. > + > + @retval TRUE The input token is the current used token. > + @retval FALSE The input token is not the current used token. > +**/ > +BOOLEAN > +IsTokenInUse ( > + IN SPIN_LOCK *Token > + ); > + > +/** > + Checks status of specified AP. > + > + This function checks whether the specified AP has finished the task > assigned > + by StartupThisAP(), and whether timeout expires. > + > + @param[in] Token This parameter describes the token that was > passed into DispatchProcedure or > + BroadcastProcedure. > + > + @retval EFI_SUCCESS Specified AP has finished task assigned by > StartupThisAPs(). > + @retval EFI_NOT_READY Specified AP has not finished task and > timeout has not expired. > +**/ > +EFI_STATUS > +IsApReady ( > + IN SPIN_LOCK *Token > + ); > + > +/** > + Worker function to execute a caller provided function on all enabled APs. > + > + @param[in] Procedure A pointer to the function to be run on > + enabled APs of the system. > + @param[in] TimeoutInMicroseconds Indicates the time limit in > microseconds for > + APs to return from Procedure, either for > + blocking or non-blocking mode. > + @param[in,out] ProcedureArgument The parameter passed into > Procedure for > + all APs. > + @param[in,out] Token This is an optional parameter that allows > the caller to execute the > + procedure in a blocking or non-blocking fashion. If it is > NULL the > + call is blocking, and the call will not return until the AP > has > + completed the procedure. If the token is not NULL, the > call will > + return immediately. The caller can check whether the > procedure has > + completed with CheckOnProcedure or > WaitForProcedure. > + @param[in,out] CPUStatus This optional pointer may be used to get > the status code returned > + by Procedure when it completes execution on the > target AP, or with > + EFI_TIMEOUT if the Procedure fails to complete within > the optional > + timeout. The implementation will update this variable > with > + EFI_NOT_READY prior to starting Procedure on the > target AP. > + > + @retval EFI_SUCCESS In blocking mode, all APs have finished before > + the timeout expired. > + @retval EFI_SUCCESS In non-blocking mode, function has been > dispatched > + to all enabled APs. > + @retval others Failed to Startup all APs. > + > +**/ > +EFI_STATUS > +InternalSmmStartupAllAPs ( > + IN EFI_AP_PROCEDURE2 Procedure, > + IN UINTN TimeoutInMicroseconds, > + IN OUT VOID *ProcedureArguments OPTIONAL, > + IN OUT SPIN_LOCK *Token, > + IN OUT EFI_STATUS *CPUStatus > + ); > + > +/** > + > + Register the SMM Foundation entry point. > + > + @param[in] Procedure A pointer to the code stream to be run on > the designated target AP > + of the system. Type EFI_AP_PROCEDURE is defined > below in Volume 2 > + with the related definitions of > + EFI_MP_SERVICES_PROTOCOL.StartupAllAPs. > + If caller may pass a value of NULL to deregister any > existing > + startup procedure. > + @param[in,out] ProcedureArguments Allows the caller to pass a list of > parameters to the code that is > + run by the AP. It is an optional common mailbox > between APs and > + the caller to share information > + > + @retval EFI_SUCCESS The Procedure has been set successfully. > + @retval EFI_INVALID_PARAMETER The Procedure is NULL but > ProcedureArguments not NULL. > + > +**/ > +EFI_STATUS > +RegisterStartupProcedure ( > + IN EFI_AP_PROCEDURE Procedure, > + IN VOID *ProcedureArguments OPTIONAL > + ); > + > +/** > + Allocate buffer for SpinLock and Wrapper function buffer. > + > +**/ > +VOID > +InitializeDataForMmMp ( > + VOID > + ); > + > #endif > diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf > b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf > index 466c568d49..da0308c47f 100644 > --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf > +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf > @@ -40,6 +40,8 @@ > SmmProfileInternal.h > SmramSaveState.c > SmmCpuMemoryManagement.c > + SmmMp.h > + SmmMp.c > > [Sources.Ia32] > Ia32/Semaphore.c > @@ -105,6 +107,7 @@ > gEfiSmmReadyToLockProtocolGuid ## NOTIFY > gEfiSmmCpuServiceProtocolGuid ## PRODUCES > gEdkiiSmmMemoryAttributeProtocolGuid ## PRODUCES > + gEfiMmMpProtocolGuid ## PRODUCES > > [Guids] > gEfiAcpiVariableGuid ## SOMETIMES_CONSUMES ## HOB # it is > used for S3 boot. > diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c > b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c > new file mode 100644 > index 0000000000..ac563ce02c > --- /dev/null > +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c > @@ -0,0 +1,376 @@ > +/** @file > +SMM MP protocol implementation > + > +Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> > + > +SPDX-License-Identifier: BSD-2-Clause-Patent > + > +**/ > + > +#include "PiSmmCpuDxeSmm.h" > +#include "SmmMp.h" > + > +/// > +/// SMM MP Protocol instance > +/// > +EFI_MM_MP_PROTOCOL mSmmMp = { > + EFI_MM_MP_PROTOCOL_REVISION, > + 0, > + SmmMpGetNumberOfProcessors, > + SmmMpDispatchProcedure, > + SmmMpBroadcastProcedure, > + SmmMpSetStartupProcedure, > + SmmMpCheckForProcedure, > + SmmMpWaitForProcedure > +}; > + > +/** > + Service to retrieves the number of logical processor in the platform. > + > + @param[in] This The EFI_MM_MP_PROTOCOL instance. > + @param[out] NumberOfProcessors Pointer to the total number of logical > processors in the system, > + including the BSP and all APs. > + > + @retval EFI_SUCCESS The number of processors was retrieved > successfully > + @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL > +**/ > +EFI_STATUS > +EFIAPI > +SmmMpGetNumberOfProcessors ( > + IN CONST EFI_MM_MP_PROTOCOL *This, > + OUT UINTN *NumberOfProcessors > + ) > +{ > + if (NumberOfProcessors == NULL) { > + return EFI_INVALID_PARAMETER; > + } > + > + *NumberOfProcessors = gSmmCpuPrivate- > >SmmCoreEntryContext.NumberOfCpus; > + > + return EFI_SUCCESS; > +} > + > + > +/** > + This service allows the caller to invoke a procedure one of the application > processors (AP). This > + function uses an optional token parameter to support blocking and non- > blocking modes. If the token > + is passed into the call, the function will operate in a non-blocking fashion > and the caller can > + check for completion with CheckOnProcedure or WaitForProcedure. > + > + @param[in] This The EFI_MM_MP_PROTOCOL instance. > + @param[in] Procedure A pointer to the procedure to be run on > the designated target > + AP of the system. Type EFI_AP_PROCEDURE2 is defined > below in > + related definitions. > + @param[in] CpuNumber The zero-based index of the processor > number of the target > + AP, on which the code stream is supposed to run. If the > number > + points to the calling processor then it will not run the > + supplied code. > + @param[in] TimeoutInMicroseconds Indicates the time limit in > microseconds for this AP to > + finish execution of Procedure, either for blocking or > + non-blocking mode. Zero means infinity. If the timeout > + expires before this AP returns from Procedure, then > Procedure > + on the AP is terminated. If the timeout expires in > blocking > + mode, the call returns EFI_TIMEOUT. If the timeout > expires > + in non-blocking mode, the timeout determined can be > through > + CheckOnProcedure or WaitForProcedure. > + Note that timeout support is optional. Whether an > + implementation supports this feature, can be > determined via > + the Attributes data member. > + @param[in,out] ProcedureArguments Allows the caller to pass a list of > parameters to the code > + that is run by the AP. It is an optional common mailbox > + between APs and the caller to share information. > + @param[in,out] Token This is parameter is broken into two > components: > + 1.Token->Completion is an optional parameter that > allows the > + caller to execute the procedure in a blocking or non- > blocking > + fashion. If it is NULL the call is blocking, and the call will > + not return until the AP has completed the procedure. If > the > + token is not NULL, the call will return immediately. The > caller > + can check whether the procedure has completed with > + CheckOnProcedure or WaitForProcedure. > + 2.Token->Status The implementation updates the > address pointed > + at by this variable with the status code returned by > Procedure > + when it completes execution on the target AP, or with > EFI_TIMEOUT > + if the Procedure fails to complete within the optional > timeout. > + The implementation will update this variable with > EFI_NOT_READY > + prior to starting Procedure on the target AP > + @param[in,out] CPUStatus This optional pointer may be used to get > the status code returned > + by Procedure when it completes execution on the > target AP, or with > + EFI_TIMEOUT if the Procedure fails to complete within > the optional > + timeout. The implementation will update this variable > with > + EFI_NOT_READY prior to starting Procedure on the > target AP. > + > + @retval EFI_SUCCESS In the blocking case, this indicates that > Procedure has completed > + execution on the target AP. > + In the non-blocking case this indicates that the > procedure has > + been successfully scheduled for execution on the target > AP. > + @retval EFI_INVALID_PARAMETER The input arguments are out of > range. Either the target AP is the > + caller of the function, or the Procedure or Token is NULL > + @retval EFI_NOT_READY If the target AP is busy executing another > procedure > + @retval EFI_ALREADY_STARTED Token is already in use for another > procedure > + @retval EFI_TIMEOUT In blocking mode, the timeout expired > before the specified AP > + has finished > + @retval EFI_OUT_OF_RESOURCES Could not allocate a required > resource. > + > +**/ > +EFI_STATUS > +EFIAPI > +SmmMpDispatchProcedure ( > + IN CONST EFI_MM_MP_PROTOCOL *This, > + IN EFI_AP_PROCEDURE2 Procedure, > + IN UINTN CpuNumber, > + IN UINTN TimeoutInMicroseconds, > + IN OUT VOID *ProcedureArguments OPTIONAL, > + IN OUT MM_COMPLETION *Token, > + IN OUT EFI_STATUS *CPUStatus > + ) > +{ > + SPIN_LOCK *CpuToken; > + UINTN SpinLockSize; > + > + if (Token != NULL) { > + SpinLockSize = GetSpinLockProperties (); > + CpuToken = AllocatePool (SpinLockSize); > + ASSERT (CpuToken != NULL); > + if (CpuToken == NULL) { > + return EFI_OUT_OF_RESOURCES; > + } > + InitializeSpinLock ((SPIN_LOCK *)(CpuToken)); > + > + *Token = (MM_COMPLETION)CpuToken; > + } > + > + return InternalSmmStartupThisAp ( > + Procedure, > + CpuNumber, > + ProcedureArguments, > + Token != NULL ? CpuToken : NULL, > + TimeoutInMicroseconds, > + CPUStatus > + ); > +} > + > +/** > + This service allows the caller to invoke a procedure on all running > application processors (AP) > + except the caller. This function uses an optional token parameter to > support blocking and > + nonblocking modes. If the token is passed into the call, the function will > operate in a non-blocking > + fashion and the caller can check for completion with CheckOnProcedure or > WaitForProcedure. > + > + It is not necessary for the implementation to run the procedure on every > processor on the platform. > + Processors that are powered down in such a way that they cannot respond > to interrupts, may be > + excluded from the broadcast. > + > + > + @param[in] This The EFI_MM_MP_PROTOCOL instance. > + @param[in] Procedure A pointer to the code stream to be run on > the APs that have > + entered MM. Type EFI_AP_PROCEDURE is defined > below in related > + definitions. > + @param[in] TimeoutInMicroseconds Indicates the time limit in > microseconds for the APs to finish > + execution of Procedure, either for blocking or non- > blocking mode. > + Zero means infinity. If the timeout expires before all > APs return > + from Procedure, then Procedure on the failed APs is > terminated. If > + the timeout expires in blocking mode, the call returns > EFI_TIMEOUT. > + If the timeout expires in non-blocking mode, the > timeout determined > + can be through CheckOnProcedure or > WaitForProcedure. > + Note that timeout support is optional. Whether an > implementation > + supports this feature can be determined via the > Attributes data > + member. > + @param[in,out] ProcedureArguments Allows the caller to pass a list of > parameters to the code > + that is run by the AP. It is an optional common mailbox > + between APs and the caller to share information. > + @param[in,out] Token This is parameter is broken into two > components: > + 1.Token->Completion is an optional parameter that > allows the > + caller to execute the procedure in a blocking or non- > blocking > + fashion. If it is NULL the call is blocking, and the call will > + not return until the AP has completed the procedure. If > the > + token is not NULL, the call will return immediately. The > caller > + can check whether the procedure has completed with > + CheckOnProcedure or WaitForProcedure. > + 2.Token->Status The implementation updates the > address pointed > + at by this variable with the status code returned by > Procedure > + when it completes execution on the target AP, or with > EFI_TIMEOUT > + if the Procedure fails to complete within the optional > timeout. > + The implementation will update this variable with > EFI_NOT_READY > + prior to starting Procedure on the target AP > + @param[in,out] CPUStatus This optional pointer may be used to get > the individual status > + returned by every AP that participated in the broadcast. > This > + parameter if used provides the base address of an array > to hold > + the EFI_STATUS value of each AP in the system. The size > of the > + array can be ascertained by the > GetNumberOfProcessors function. > + As mentioned above, the broadcast may not include > every processor > + in the system. Some implementations may exclude > processors that > + have been powered down in such a way that they are > not responsive > + to interrupts. Additionally the broadcast excludes the > processor > + which is making the BroadcastProcedure call. For every > excluded > + processor, the array entry must contain a value of > EFI_NOT_STARTED > + > + @retval EFI_SUCCESS In the blocking case, this indicates that > Procedure has completed > + execution on the APs. > + In the non-blocking case this indicates that the > procedure has > + been successfully scheduled for execution on the APs. > + @retval EFI_INVALID_PARAMETER The Procedure or Token is NULL > + @retval EFI_NOT_READY If the target AP is busy executing another > procedure > + @retval EFI_ALREADY_STARTED Token is already in use for another > procedure > + @retval EFI_TIMEOUT In blocking mode, the timeout expired > before the specified AP > + has finished. > + @retval EFI_OUT_OF_RESOURCES Could not allocate a required > resource. > + > +**/ > +EFI_STATUS > +EFIAPI > +SmmMpBroadcastProcedure ( > + IN CONST EFI_MM_MP_PROTOCOL *This, > + IN EFI_AP_PROCEDURE2 Procedure, > + IN UINTN TimeoutInMicroseconds, > + IN OUT VOID *ProcedureArguments OPTIONAL, > + IN OUT MM_COMPLETION *Token, > + IN OUT EFI_STATUS *CPUStatus > + ) > +{ > + SPIN_LOCK *CpuToken; > + UINTN SpinLockSize; > + > + if (Token != NULL) { > + SpinLockSize = GetSpinLockProperties (); > + CpuToken = AllocatePool (SpinLockSize); > + ASSERT (CpuToken != NULL); > + if (CpuToken == NULL) { > + return EFI_OUT_OF_RESOURCES; > + } > + InitializeSpinLock ((SPIN_LOCK *)(CpuToken)); > + > + *Token = (MM_COMPLETION)CpuToken; > + } > + > + return InternalSmmStartupAllAPs( > + Procedure, > + TimeoutInMicroseconds, > + ProcedureArguments, > + Token != NULL ? CpuToken : NULL, > + CPUStatus > + ); > +} > + > + > +/** > + This service allows the caller to set a startup procedure that will be > executed when an AP powers > + up from a state where core configuration and context is lost. The > procedure is execution has the > + following properties: > + 1. The procedure executes before the processor is handed over to the > operating system. > + 2. All processors execute the same startup procedure. > + 3. The procedure may run in parallel with other procedures invoked > through the functions in this > + protocol, or with processors that are executing an MM handler or running > in the operating system. > + > + > + @param[in] This The EFI_MM_MP_PROTOCOL instance. > + @param[in] Procedure A pointer to the code stream to be run on > the designated target AP > + of the system. Type EFI_AP_PROCEDURE is defined > below in Volume 2 > + with the related definitions of > + EFI_MP_SERVICES_PROTOCOL.StartupAllAPs. > + If caller may pass a value of NULL to deregister any > existing > + startup procedure. > + @param[in,out] ProcedureArguments Allows the caller to pass a list of > parameters to the code that is > + run by the AP. It is an optional common mailbox > between APs and > + the caller to share information > + > + @retval EFI_SUCCESS The Procedure has been set successfully. > + @retval EFI_INVALID_PARAMETER The Procedure is NULL but > ProcedureArguments not NULL. > + > +**/ > +EFI_STATUS > +EFIAPI > +SmmMpSetStartupProcedure ( > + IN CONST EFI_MM_MP_PROTOCOL *This, > + IN EFI_AP_PROCEDURE Procedure, > + IN OUT VOID *ProcedureArguments OPTIONAL > + ) > +{ > + return RegisterStartupProcedure (Procedure, ProcedureArguments); > +} > + > +/** > + When non-blocking execution of a procedure on an AP is invoked with > DispatchProcedure, > + via the use of a token, this function can be used to check for completion of > the procedure on the AP. > + The function takes the token that was passed into the DispatchProcedure > call. If the procedure > + is complete, and therefore it is now possible to run another procedure on > the same AP, this function > + returns EFI_SUCESS. In this case the status returned by the procedure that > executed on the AP is > + returned in the token's Status field. If the procedure has not yet > completed, then this function > + returns EFI_NOT_READY. > + > + When a non-blocking execution of a procedure is invoked with > BroadcastProcedure, via the > + use of a token, this function can be used to check for completion of the > procedure on all the > + broadcast APs. The function takes the token that was passed into the > BroadcastProcedure > + call. If the procedure is complete on all broadcast APs this function returns > EFI_SUCESS. In this > + case the Status field in the token passed into the function reflects the > overall result of the > + invocation, which may be EFI_SUCCESS, if all executions succeeded, or the > first observed failure. > + If the procedure has not yet completed on the broadcast APs, the function > returns > + EFI_NOT_READY. > + > + @param[in] This The EFI_MM_MP_PROTOCOL instance. > + @param[in] Token This parameter describes the token that was > passed into > + DispatchProcedure or BroadcastProcedure. > + > + @retval EFI_SUCCESS Procedure has completed. > + @retval EFI_NOT_READY The Procedure has not completed. > + @retval EFI_INVALID_PARAMETER Token or Token->Completion is > NULL > + @retval EFI_NOT_FOUND Token is not currently in use for a non- > blocking call > + > +**/ > +EFI_STATUS > +EFIAPI > +SmmMpCheckForProcedure ( > + IN CONST EFI_MM_MP_PROTOCOL *This, > + IN MM_COMPLETION Token > + ) > +{ > + if (Token == NULL) { > + return EFI_INVALID_PARAMETER; > + } > + > + if (!IsTokenInUse ((SPIN_LOCK *)Token)) { > + return EFI_NOT_FOUND; > + } > + > + return IsApReady ((SPIN_LOCK *)Token); > +} > + > +/** > + When a non-blocking execution of a procedure on an AP is invoked via > DispatchProcedure, > + this function will block the caller until the remote procedure has completed > on the designated AP. > + The non-blocking procedure invocation is identified by the Token > parameter, which must match the > + token that used when DispatchProcedure was called. Upon completion the > status returned by > + the procedure that executed on the AP is used to update the token's > Status field. > + > + When a non-blocking execution of a procedure on an AP is invoked via > BroadcastProcedure > + this function will block the caller until the remote procedure has completed > on all of the APs that > + entered MM. The non-blocking procedure invocation is identified by the > Token parameter, which > + must match the token that used when BroadcastProcedure was called. > Upon completion the > + overall status returned by the procedures that executed on the broadcast > AP is used to update the > + token's Status field. The overall status may be EFI_SUCCESS, if all > executions succeeded, or the > + first observed failure. > + > + > + @param[in] This The EFI_MM_MP_PROTOCOL instance. > + @param[in] Token This parameter describes the token that was > passed into > + DispatchProcedure or BroadcastProcedure. > + > + @retval EFI_SUCCESS Procedure has completed. > + @retval EFI_INVALID_PARAMETER Token or Token->Completion is > NULL > + @retval EFI_NOT_FOUND Token is not currently in use for a non- > blocking call > + > +**/ > +EFI_STATUS > +EFIAPI > +SmmMpWaitForProcedure ( > + IN CONST EFI_MM_MP_PROTOCOL *This, > + IN MM_COMPLETION Token > + ) > +{ > + EFI_STATUS Status; > + > + do { > + Status = SmmMpCheckForProcedure (This, Token); > + } while (Status == EFI_NOT_READY); > + > + return Status; > +} > + > diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h > b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h > new file mode 100644 > index 0000000000..e0d823a4b1 > --- /dev/null > +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h > @@ -0,0 +1,286 @@ > +/** @file > +Include file for SMM MP protocol implementation. > + > +Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> > + > +SPDX-License-Identifier: BSD-2-Clause-Patent > + > +**/ > + > +#ifndef _SMM_MP_PROTOCOL_H_ > +#define _SMM_MP_PROTOCOL_H_ > + > +// > +// SMM MP Protocol function prototypes. > +// > + > +/** > + Service to retrieves the number of logical processor in the platform. > + > + @param[in] This The EFI_MM_MP_PROTOCOL instance. > + @param[out] NumberOfProcessors Pointer to the total number of logical > processors in the system, > + including the BSP and all APs. > + > + @retval EFI_SUCCESS The number of processors was retrieved > successfully > + @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL > +**/ > + > +EFI_STATUS > +EFIAPI > +SmmMpGetNumberOfProcessors ( > + IN CONST EFI_MM_MP_PROTOCOL *This, > + OUT UINTN *NumberOfProcessors > + ); > + > + > +/** > + This service allows the caller to invoke a procedure one of the application > processors (AP). This > + function uses an optional token parameter to support blocking and non- > blocking modes. If the token > + is passed into the call, the function will operate in a non-blocking fashion > and the caller can > + check for completion with CheckOnProcedure or WaitForProcedure. > + > + @param[in] This The EFI_MM_MP_PROTOCOL instance. > + @param[in] Procedure A pointer to the procedure to be run on > the designated target > + AP of the system. Type EFI_AP_PROCEDURE2 is defined > below in > + related definitions. > + @param[in] CpuNumber The zero-based index of the processor > number of the target > + AP, on which the code stream is supposed to run. If the > number > + points to the calling processor then it will not run the > + supplied code. > + @param[in] TimeoutInMicroseconds Indicates the time limit in > microseconds for this AP to > + finish execution of Procedure, either for blocking or > + non-blocking mode. Zero means infinity. If the timeout > + expires before this AP returns from Procedure, then > Procedure > + on the AP is terminated. If the timeout expires in > blocking > + mode, the call returns EFI_TIMEOUT. If the timeout > expires > + in non-blocking mode, the timeout determined can be > through > + CheckOnProcedure or WaitForProcedure. > + Note that timeout support is optional. Whether an > + implementation supports this feature, can be > determined via > + the Attributes data member. > + @param[in,out] ProcedureArguments Allows the caller to pass a list of > parameters to the code > + that is run by the AP. It is an optional common mailbox > + between APs and the caller to share information. > + @param[in,out] Token This is parameter is broken into two > components: > + 1.Token->Completion is an optional parameter that > allows the > + caller to execute the procedure in a blocking or non- > blocking > + fashion. If it is NULL the call is blocking, and the call will > + not return until the AP has completed the procedure. If > the > + token is not NULL, the call will return immediately. The > caller > + can check whether the procedure has completed with > + CheckOnProcedure or WaitForProcedure. > + 2.Token->Status The implementation updates the > address pointed > + at by this variable with the status code returned by > Procedure > + when it completes execution on the target AP, or with > EFI_TIMEOUT > + if the Procedure fails to complete within the optional > timeout. > + The implementation will update this variable with > EFI_NOT_READY > + prior to starting Procedure on the target AP > + @param[in,out] CPUStatus This optional pointer may be used to get > the status code returned > + by Procedure when it completes execution on the > target AP, or with > + EFI_TIMEOUT if the Procedure fails to complete within > the optional > + timeout. The implementation will update this variable > with > + EFI_NOT_READY prior to starting Procedure on the > target AP. > + > + @retval EFI_SUCCESS In the blocking case, this indicates that > Procedure has completed > + execution on the target AP. > + In the non-blocking case this indicates that the > procedure has > + been successfully scheduled for execution on the target > AP. > + @retval EFI_INVALID_PARAMETER The input arguments are out of > range. Either the target AP is the > + caller of the function, or the Procedure or Token is NULL > + @retval EFI_NOT_READY If the target AP is busy executing another > procedure > + @retval EFI_ALREADY_STARTED Token is already in use for another > procedure > + @retval EFI_TIMEOUT In blocking mode, the timeout expired > before the specified AP > + has finished > + @retval EFI_OUT_OF_RESOURCES Could not allocate a required > resource. > + > +**/ > +EFI_STATUS > +EFIAPI > +SmmMpDispatchProcedure ( > + IN CONST EFI_MM_MP_PROTOCOL *This, > + IN EFI_AP_PROCEDURE2 Procedure, > + IN UINTN CpuNumber, > + IN UINTN TimeoutInMicroseconds, > + IN OUT VOID *ProcedureArguments OPTIONAL, > + IN OUT MM_COMPLETION *Token, > + IN OUT EFI_STATUS *CPUStatus > + ); > + > +/** > + This service allows the caller to invoke a procedure on all running > application processors (AP) > + except the caller. This function uses an optional token parameter to > support blocking and > + nonblocking modes. If the token is passed into the call, the function will > operate in a non-blocking > + fashion and the caller can check for completion with CheckOnProcedure or > WaitForProcedure. > + > + It is not necessary for the implementation to run the procedure on every > processor on the platform. > + Processors that are powered down in such a way that they cannot respond > to interrupts, may be > + excluded from the broadcast. > + > + > + @param[in] This The EFI_MM_MP_PROTOCOL instance. > + @param[in] Procedure A pointer to the code stream to be run on > the APs that have > + entered MM. Type EFI_AP_PROCEDURE is defined > below in related > + definitions. > + @param[in] TimeoutInMicroseconds Indicates the time limit in > microseconds for the APs to finish > + execution of Procedure, either for blocking or non- > blocking mode. > + Zero means infinity. If the timeout expires before all > APs return > + from Procedure, then Procedure on the failed APs is > terminated. If > + the timeout expires in blocking mode, the call returns > EFI_TIMEOUT. > + If the timeout expires in non-blocking mode, the > timeout determined > + can be through CheckOnProcedure or > WaitForProcedure. > + Note that timeout support is optional. Whether an > implementation > + supports this feature can be determined via the > Attributes data > + member. > + @param[in,out] ProcedureArguments Allows the caller to pass a list of > parameters to the code > + that is run by the AP. It is an optional common mailbox > + between APs and the caller to share information. > + @param[in,out] Token This is parameter is broken into two > components: > + 1.Token->Completion is an optional parameter that > allows the > + caller to execute the procedure in a blocking or non- > blocking > + fashion. If it is NULL the call is blocking, and the call will > + not return until the AP has completed the procedure. If > the > + token is not NULL, the call will return immediately. The > caller > + can check whether the procedure has completed with > + CheckOnProcedure or WaitForProcedure. > + 2.Token->Status The implementation updates the > address pointed > + at by this variable with the status code returned by > Procedure > + when it completes execution on the target AP, or with > EFI_TIMEOUT > + if the Procedure fails to complete within the optional > timeout. > + The implementation will update this variable with > EFI_NOT_READY > + prior to starting Procedure on the target AP > + @param[in,out] CPUStatus This optional pointer may be used to get > the individual status > + returned by every AP that participated in the broadcast. > This > + parameter if used provides the base address of an array > to hold > + the EFI_STATUS value of each AP in the system. The size > of the > + array can be ascertained by the > GetNumberOfProcessors function. > + As mentioned above, the broadcast may not include > every processor > + in the system. Some implementations may exclude > processors that > + have been powered down in such a way that they are > not responsive > + to interrupts. Additionally the broadcast excludes the > processor > + which is making the BroadcastProcedure call. For every > excluded > + processor, the array entry must contain a value of > EFI_NOT_STARTED > + > + @retval EFI_SUCCESS In the blocking case, this indicates that > Procedure has completed > + execution on the APs. > + In the non-blocking case this indicates that the > procedure has > + been successfully scheduled for execution on the APs. > + @retval EFI_INVALID_PARAMETER The Procedure or Token is NULL > + @retval EFI_NOT_READY If the target AP is busy executing another > procedure > + @retval EFI_ALREADY_STARTED Token is already in use for another > procedure > + @retval EFI_TIMEOUT In blocking mode, the timeout expired > before the specified AP > + has finished > + @retval EFI_OUT_OF_RESOURCES Could not allocate a required > resource. > + > +**/ > +EFI_STATUS > +EFIAPI > +SmmMpBroadcastProcedure ( > + IN CONST EFI_MM_MP_PROTOCOL *This, > + IN EFI_AP_PROCEDURE2 Procedure, > + IN UINTN TimeoutInMicroseconds, > + IN OUT VOID *ProcedureArguments OPTIONAL, > + IN OUT MM_COMPLETION *Token, > + IN OUT EFI_STATUS *CPUStatus > + ); > + > + > +/** > + This service allows the caller to set a startup procedure that will be > executed when an AP powers > + up from a state where core configuration and context is lost. The > procedure is execution has the > + following properties: > + 1. The procedure executes before the processor is handed over to the > operating system. > + 2. All processors execute the same startup procedure. > + 3. The procedure may run in parallel with other procedures invoked > through the functions in this > + protocol, or with processors that are executing an MM handler or running > in the operating system. > + > + > + @param[in] This The EFI_MM_MP_PROTOCOL instance. > + @param[in] Procedure A pointer to the code stream to be run on > the designated target AP > + of the system. Type EFI_AP_PROCEDURE is defined > below in Volume 2 > + with the related definitions of > + EFI_MP_SERVICES_PROTOCOL.StartupAllAPs. > + If caller may pass a value of NULL to deregister any > existing > + startup procedure. > + @param[in,out] ProcedureArguments Allows the caller to pass a list of > parameters to the code that is > + run by the AP. It is an optional common mailbox > between APs and > + the caller to share information > + > + @retval EFI_SUCCESS The Procedure has been set successfully. > + @retval EFI_INVALID_PARAMETER The Procedure is NULL but > ProcedureArguments not NULL. > +**/ > +EFI_STATUS > +EFIAPI > +SmmMpSetStartupProcedure ( > + IN CONST EFI_MM_MP_PROTOCOL *This, > + IN EFI_AP_PROCEDURE Procedure, > + IN OUT VOID *ProcedureArguments OPTIONAL > + ); > + > +/** > + When non-blocking execution of a procedure on an AP is invoked with > DispatchProcedure, > + via the use of a token, this function can be used to check for completion of > the procedure on the AP. > + The function takes the token that was passed into the DispatchProcedure > call. If the procedure > + is complete, and therefore it is now possible to run another procedure on > the same AP, this function > + returns EFI_SUCESS. In this case the status returned by the procedure that > executed on the AP is > + returned in the token's Status field. If the procedure has not yet > completed, then this function > + returns EFI_NOT_READY. > + > + When a non-blocking execution of a procedure is invoked with > BroadcastProcedure, via the > + use of a token, this function can be used to check for completion of the > procedure on all the > + broadcast APs. The function takes the token that was passed into the > BroadcastProcedure > + call. If the procedure is complete on all broadcast APs this function returns > EFI_SUCESS. In this > + case the Status field in the token passed into the function reflects the > overall result of the > + invocation, which may be EFI_SUCCESS, if all executions succeeded, or the > first observed failure. > + If the procedure has not yet completed on the broadcast APs, the function > returns > + EFI_NOT_READY. > + > + @param[in] This The EFI_MM_MP_PROTOCOL instance. > + @param[in] Token This parameter describes the token that was > passed into > + DispatchProcedure or BroadcastProcedure. > + > + @retval EFI_SUCCESS Procedure has completed. > + @retval EFI_NOT_READY The Procedure has not completed. > + @retval EFI_INVALID_PARAMETER Token or Token->Completion is > NULL > + @retval EFI_NOT_FOUND Token is not currently in use for a non- > blocking call > + > +**/ > +EFI_STATUS > +EFIAPI > +SmmMpCheckForProcedure ( > + IN CONST EFI_MM_MP_PROTOCOL *This, > + IN MM_COMPLETION Token > + ); > + > +/** > + When a non-blocking execution of a procedure on an AP is invoked via > DispatchProcedure, > + this function will block the caller until the remote procedure has completed > on the designated AP. > + The non-blocking procedure invocation is identified by the Token > parameter, which must match the > + token that used when DispatchProcedure was called. Upon completion the > status returned by > + the procedure that executed on the AP is used to update the token's > Status field. > + > + When a non-blocking execution of a procedure on an AP is invoked via > BroadcastProcedure > + this function will block the caller until the remote procedure has completed > on all of the APs that > + entered MM. The non-blocking procedure invocation is identified by the > Token parameter, which > + must match the token that used when BroadcastProcedure was called. > Upon completion the > + overall status returned by the procedures that executed on the broadcast > AP is used to update the > + token's Status field. The overall status may be EFI_SUCCESS, if all > executions succeeded, or the > + first observed failure. > + > + > + @param[in] This The EFI_MM_MP_PROTOCOL instance. > + @param[in] Token This parameter describes the token that was > passed into > + DispatchProcedure or BroadcastProcedure. > + > + @retval EFI_SUCCESS Procedure has completed. > + @retval EFI_INVALID_PARAMETER Token or Token->Completion is > NULL > + @retval EFI_NOT_FOUND Token is not currently in use for a non- > blocking call > + > +**/ > +EFI_STATUS > +EFIAPI > +SmmMpWaitForProcedure ( > + IN CONST EFI_MM_MP_PROTOCOL *This, > + IN MM_COMPLETION Token > + ); > + > +#endif > -- > 2.21.0.windows.1 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Patch v4 0/2] Enable new MM MP protocol 2019-07-08 14:01 [Patch v4 0/2] Enable new MM MP protocol Dong, Eric 2019-07-08 14:01 ` [Patch 1/2] MdePkg: Add new MM MP Protocol definition Dong, Eric 2019-07-08 14:01 ` [Patch v4 2/2] UefiCpuPkg/PiSmmCpuDxeSmm: Enable MM MP Protocol Dong, Eric @ 2019-07-08 17:02 ` Laszlo Ersek 2 siblings, 0 replies; 5+ messages in thread From: Laszlo Ersek @ 2019-07-08 17:02 UTC (permalink / raw) To: Eric Dong, devel; +Cc: Ray Ni Hi Eric, On 07/08/19 16:01, Eric Dong wrote: > V4 changes: > 1. Use link list to save the used tokens. > > v3 changes: > 1. Fix Token clean up too early caused CheckProcedure return error. > > https://bugzilla.tianocore.org/show_bug.cgi?id=1937 > > PI spec added a new protocol named MM MP protocol. This protocol allows for better remote queuing of execution of procedures on an AP. > This extends the existing procedures to allow: > 1. A function to be called in blocking and non-blocking manner explicitly 2. Allow broadcasts. > 3. Allow execution of a procedure when a processor powers up. > > This patch serial enable this new protocol. > > Cc: Ray Ni <ray.ni@intel.com> > Cc: Laszlo Ersek <lersek@redhat.com> I'll try to regression-test this version after Ray is OK with it, from a review perspective. Thanks Laszlo > Eric Dong (2): > MdePkg: Add new MM MP Protocol definition. > UefiCpuPkg/PiSmmCpuDxeSmm: Enable MM MP Protocol. > > MdePkg/Include/Pi/PiMultiPhase.h | 16 + > MdePkg/Include/Protocol/MmMp.h | 333 +++++++++++ > MdePkg/MdePkg.dec | 3 + > UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c | 558 ++++++++++++++++++- > UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c | 16 + > UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h | 175 +++++- > UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf | 3 + > UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c | 376 +++++++++++++ > UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h | 286 ++++++++++ > 9 files changed, 1744 insertions(+), 22 deletions(-) > create mode 100644 MdePkg/Include/Protocol/MmMp.h > create mode 100644 UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.c > create mode 100644 UefiCpuPkg/PiSmmCpuDxeSmm/SmmMp.h > ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2019-07-09 5:51 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2019-07-08 14:01 [Patch v4 0/2] Enable new MM MP protocol Dong, Eric 2019-07-08 14:01 ` [Patch 1/2] MdePkg: Add new MM MP Protocol definition Dong, Eric 2019-07-08 14:01 ` [Patch v4 2/2] UefiCpuPkg/PiSmmCpuDxeSmm: Enable MM MP Protocol Dong, Eric 2019-07-09 5:51 ` Ni, Ray 2019-07-08 17:02 ` [Patch v4 0/2] Enable new MM MP protocol Laszlo Ersek
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox