/** @file
  Provides the parent dispatch service for a given SMI source generator.
  The EFI_SMM_ICHN_DISPATCH_PROTOCOL provides the ability to install child handlers for
  the given event types.

  Copyright (c) 2008, Intel Corporation
  All rights reserved. This program and the accompanying materials
  are licensed and made available under the terms and conditions of the BSD License
  which accompanies this distribution.  The full text of the license may be found at
  http://opensource.org/licenses/bsd-license.php

  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

  Module Name:  SmmIchnDispatch.h

  @par Revision Reference:
  This Protocol is defined in Framework of EFI SMM Core Interface Spec
  Version 0.9.

**/

#ifndef _EFI_SMM_ICHN_DISPATCH_H_
#define _EFI_SMM_ICHN_DISPATCH_H_

#include <PiDxe.h>

//
// Global ID for the ICH SMI Protocol
//
#define EFI_SMM_ICHN_DISPATCH_PROTOCOL_GUID \
  { \
    0xc50b323e, 0x9075, 0x4f2a, {0xac, 0x8e, 0xd2, 0x59, 0x6a, 0x10, 0x85, 0xcc } \
  }

typedef struct _EFI_SMM_ICHN_DISPATCH_PROTOCOL  EFI_SMM_ICHN_DISPATCH_PROTOCOL;

//
// Related Definitions
//
//
// ICHN Specific SMIs.  These are miscellaneous SMI sources that are supported by the
// ICHN specific SMI implementation.  These may change over time.  TrapNumber is only
// valid if the Type is Trap.
//
typedef enum {
  //
  // NOTE: NEVER delete items from this list/enumeration!  Doing so will prevent other versions
  // of the code from compiling.  If the ICH version your driver is written for doesn't support
  // some of these SMIs, then simply return EFI_UNSUPPORTED when a child/client tries to register
  // for them.
  //
  IchnMch,
  IchnPme,
  IchnRtcAlarm,
  IchnRingIndicate,
  IchnAc97Wake,
  IchnSerialIrq,
  IchnY2KRollover,
  IchnTcoTimeout,
  IchnOsTco,
  IchnNmi,
  IchnIntruderDetect,
  IchnBiosWp,
  IchnMcSmi,
  IchnPmeB0,
  IchnThrmSts,
  IchnSmBus,
  IchnIntelUsb2,
  IchnMonSmi7,
  IchnMonSmi6,
  IchnMonSmi5,
  IchnMonSmi4,
  IchnDevTrap13,
  IchnDevTrap12,
  IchnDevTrap11,
  IchnDevTrap10,
  IchnDevTrap9,
  IchnDevTrap8,
  IchnDevTrap7,
  IchnDevTrap6,
  IchnDevTrap5,
  IchnDevTrap3,
  IchnDevTrap2,
  IchnDevTrap1,
  IchnDevTrap0,
  IchnIoTrap3,
  IchnIoTrap2,
  IchnIoTrap1,
  IchnIoTrap0,
  IchnPciExpress,
  IchnMonitor,
  IchnSpi,
  IchnQRT,
  IchnGpioUnlock,
  //
  // INSERT NEW ITEMS JUST BEFORE THIS LINE
  //
  NUM_ICHN_TYPES  // the number of items in this enumeration
} EFI_SMM_ICHN_SMI_TYPE;

typedef struct {
  EFI_SMM_ICHN_SMI_TYPE Type;
} EFI_SMM_ICHN_DISPATCH_CONTEXT;

//
// Member functions
//
/**
  Dispatch function for a ICHN specific SMI handler.

  @param  DispatchHandle        Handle of this dispatch function.
  @param  DispatchContext       Pointer to the dispatch function's context.
                                The DispatchContext fields are filled in
                                by the dispatching driver prior to
                                invoking this dispatch function.

  @return None

**/
typedef
VOID
(EFIAPI *EFI_SMM_ICHN_DISPATCH)(
  IN  EFI_HANDLE                      DispatchHandle,
  IN  EFI_SMM_ICHN_DISPATCH_CONTEXT   *DispatchContext
  );

/**
  Register a child SMI source dispatch function with a parent SMM driver

  @param  This                  Pointer to the EFI_SMM_ICHN_DISPATCH_PROTOCOL instance.
  @param  DispatchFunction      Function to install.
  @param  DispatchContext       Pointer to the dispatch function's context.
                                The caller fills this context in before calling
                                the register function to indicate to the register
                                function the ICHN SMI source for which the dispatch
                                function should be invoked.
  @param  DispatchHandle        Handle generated by the dispatcher to track the function
                                instance.

  @retval EFI_SUCCESS           The dispatch function has been successfully
                                registered and the SMI source has been enabled.
  @retval EFI_DEVICE_ERROR      The driver was unable to enable the SMI source.
  @retval EFI_OUT_OF_RESOURCES  Not enough memory (system or SMM) to manage this
                                child.
  @retval EFI_INVALID_PARAMETER DispatchContext is invalid. The ICHN input value
                                is not within valid range.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_SMM_ICHN_REGISTER)(
  IN EFI_SMM_ICHN_DISPATCH_PROTOCOL            *This,
  IN EFI_SMM_ICHN_DISPATCH                     DispatchFunction,
  IN EFI_SMM_ICHN_DISPATCH_CONTEXT             *DispatchContext,
  OUT EFI_HANDLE                               *DispatchHandle
  );

/**
  Unregister a child SMI source dispatch function with a parent SMM driver

  @param  This                  Pointer to the EFI_SMM_ICHN_DISPATCH_PROTOCOL instance.
  @param  DispatchHandle        Handle of the service to remove.

  @retval EFI_SUCCESS           The dispatch function has been successfully
                                unregistered and the SMI source has been disabled
                                if there are no other registered child dispatch
                                functions for this SMI source.
  @retval EFI_INVALID_PARAMETER Handle is invalid.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_SMM_ICHN_UNREGISTER)(
  IN EFI_SMM_ICHN_DISPATCH_PROTOCOL            *This,
  IN EFI_HANDLE                                DispatchHandle
  );

//
// Interface structure for the SMM ICHN specific SMI Dispatch Protocol
//
/**
  @par Protocol Description:
  Provides the parent dispatch service for a given SMI source generator.

  @param Register
  Installs a child service to be dispatched by this protocol.

  @param UnRegister
  Removes a child service dispatched by this protocol.

**/
struct _EFI_SMM_ICHN_DISPATCH_PROTOCOL {
  EFI_SMM_ICHN_REGISTER   Register;
  EFI_SMM_ICHN_UNREGISTER UnRegister;
};

extern EFI_GUID gEfiSmmIchnDispatchProtocolGuid;

#endif