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91 lines
3.9 KiB
C
91 lines
3.9 KiB
C
/** @file
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EFI MM Control PPI definition.
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This PPI is used initiate synchronous MMI activations. This PPI could be published by a processor
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driver to abstract the MMI IPI or a driver which abstracts the ASIC that is supporting the APM port.
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Because of the possibility of performing MMI IPI transactions, the ability to generate this event
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from a platform chipset agent is an optional capability for both IA-32 and x64-based systems.
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Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Revision Reference:
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This PPI is introduced in PI Version 1.5.
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**/
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#ifndef _MM_CONTROL_PPI_H_
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#define _MM_CONTROL_PPI_H_
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#define EFI_PEI_MM_CONTROL_PPI_GUID \
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{ 0x61c68702, 0x4d7e, 0x4f43, 0x8d, 0xef, 0xa7, 0x43, 0x5, 0xce, 0x74, 0xc5 }
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typedef struct _EFI_PEI_MM_CONTROL_PPI EFI_PEI_MM_CONTROL_PPI;
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/**
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Invokes PPI activation from the PI PEI environment.
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@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
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@param This The PEI_MM_CONTROL_PPI instance.
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@param ArgumentBuffer The value passed to the MMI handler. This value corresponds to the
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SwMmiInputValue in the RegisterContext parameter for the Register()
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function in the EFI_MM_SW_DISPATCH_PROTOCOL and in the Context parameter
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in the call to the DispatchFunction
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@param ArgumentBufferSize The size of the data passed in ArgumentBuffer or NULL if ArgumentBuffer is NULL.
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@param Periodic An optional mechanism to periodically repeat activation.
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@param ActivationInterval An optional parameter to repeat at this period one
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time or, if the Periodic Boolean is set, periodically.
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@retval EFI_SUCCESS The MMI has been engendered.
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@retval EFI_DEVICE_ERROR The timing is unsupported.
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@retval EFI_INVALID_PARAMETER The activation period is unsupported.
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@retval EFI_NOT_STARTED The MM base service has not been initialized.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_MM_ACTIVATE) (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_MM_CONTROL_PPI * This,
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IN OUT INT8 *ArgumentBuffer OPTIONAL,
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IN OUT UINTN *ArgumentBufferSize OPTIONAL,
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IN BOOLEAN Periodic OPTIONAL,
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IN UINTN ActivationInterval OPTIONAL
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);
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/**
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Clears any system state that was created in response to the Trigger() call.
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@param PeiServices General purpose services available to every PEIM.
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@param This The PEI_MM_CONTROL_PPI instance.
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@param Periodic Optional parameter to repeat at this period one
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time or, if the Periodic Boolean is set, periodically.
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@retval EFI_SUCCESS The MMI has been engendered.
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@retval EFI_DEVICE_ERROR The source could not be cleared.
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@retval EFI_INVALID_PARAMETER The service did not support the Periodic input argument.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *PEI_MM_DEACTIVATE) (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_MM_CONTROL_PPI * This,
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IN BOOLEAN Periodic OPTIONAL
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);
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///
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/// The EFI_PEI_MM_CONTROL_PPI is produced by a PEIM. It provides an abstraction of the
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/// platform hardware that generates an MMI. There are often I/O ports that, when accessed, will
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/// generate the MMI. Also, the hardware optionally supports the periodic generation of these signals.
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///
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struct _PEI_MM_CONTROL_PPI {
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PEI_MM_ACTIVATE Trigger;
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PEI_MM_DEACTIVATE Clear;
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};
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extern EFI_GUID gEfiPeiMmControlPpiGuid;
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#endif
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