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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8720 6f19259b-4bc3-4df7-8a09-765794883524
142 lines
5.0 KiB
C
142 lines
5.0 KiB
C
/** @file
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Provides the parent dispatch service for the USB SMI source generator.
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Copyright (c) 2007 - 2009, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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@par Revision Reference:
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This Protocol is defined in Framework of EFI SMM Core Interface Spec
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Version 0.9.
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**/
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#ifndef _EFI_SMM_USB_DISPATCH_H_
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#define _EFI_SMM_USB_DISPATCH_H_
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#include <PiDxe.h>
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//
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// Global ID for the USB Protocol
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//
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#define EFI_SMM_USB_DISPATCH_PROTOCOL_GUID \
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{ \
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0xa05b6ffd, 0x87af, 0x4e42, {0x95, 0xc9, 0x62, 0x28, 0xb6, 0x3c, 0xf3, 0xf3 } \
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}
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typedef struct _EFI_SMM_USB_DISPATCH_PROTOCOL EFI_SMM_USB_DISPATCH_PROTOCOL;
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//
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// Related Definitions
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//
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typedef enum {
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UsbLegacy,
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UsbWake
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} EFI_USB_SMI_TYPE;
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typedef struct {
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///
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/// Describes whether this child handler will be invoked in response to a USB legacy
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/// emulation event, such as port-trap on the PS/2* keyboard control registers, or to a
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/// USB wake event, such as resumption from a sleep state.
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///
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EFI_USB_SMI_TYPE Type;
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///
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/// The device path is part of the context structure and describes the location of the
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/// particular USB host controller in the system for which this register event will occur.
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/// This location is important because of the possible integration of several USB host
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/// controllers in a system.
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///
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EFI_DEVICE_PATH_PROTOCOL *Device;
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} EFI_SMM_USB_DISPATCH_CONTEXT;
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//
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// Member functions
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//
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/**
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Dispatch function for a USB SMI handler.
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@param DispatchHandle Handle of this dispatch function.
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@param DispatchContext Pointer to the dispatch function's context.
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The DispatchContext fields are filled in
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by the dispatching driver prior to
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invoking this dispatch function.
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**/
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typedef
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VOID
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(EFIAPI *EFI_SMM_USB_DISPATCH)(
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IN EFI_HANDLE DispatchHandle,
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IN EFI_SMM_USB_DISPATCH_CONTEXT *DispatchContext
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);
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/**
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Register a child SMI source dispatch function with a parent SMM driver.
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@param This Pointer to the EFI_SMM_USB_DISPATCH_PROTOCOL instance.
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@param DispatchFunction Pointer to dispatch function to be invoked
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for this SMI source.
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@param DispatchContext Pointer to the dispatch function's context.
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The caller fills this context in before calling
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the register function to indicate to the register
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function the USB SMI types for which the dispatch
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function should be invoked.
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@param DispatchHandle Handle generated by the dispatcher to track the
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function instance.
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@retval EFI_SUCCESS The dispatch function has been successfully
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registered and the SMI source has been enabled.
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@retval EFI_DEVICE_ERROR The driver was unable to enable the SMI source.
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@retval EFI_OUT_OF_RESOURCES Not enough memory (system or SMM) to manage this
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child.
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@retval EFI_INVALID_PARAMETER DispatchContext is invalid. The USB SMI type
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is not within valid range.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SMM_USB_REGISTER)(
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IN EFI_SMM_USB_DISPATCH_PROTOCOL *This,
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IN EFI_SMM_USB_DISPATCH DispatchFunction,
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IN EFI_SMM_USB_DISPATCH_CONTEXT *DispatchContext,
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OUT EFI_HANDLE *DispatchHandle
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);
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/**
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Unregisters a USB service.
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@param This Pointer to the EFI_SMM_USB_DISPATCH_PROTOCOL instance.
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@param DispatchHandle Handle of the service to remove.
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@retval EFI_SUCCESS The dispatch function has been successfully
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unregistered and the SMI source has been disabled
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if there are no other registered child dispatch
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functions for this SMI source.
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@retval EFI_INVALID_PARAMETER The DispatchHandle was not valid.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SMM_USB_UNREGISTER)(
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IN EFI_SMM_USB_DISPATCH_PROTOCOL *This,
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IN EFI_HANDLE DispatchHandle
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);
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///
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/// The EFI_SMM_USB_DISPATCH_PROTOCOL provides the ability to install child handlers for the
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/// given event types.
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///
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struct _EFI_SMM_USB_DISPATCH_PROTOCOL {
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EFI_SMM_USB_REGISTER Register;
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EFI_SMM_USB_UNREGISTER UnRegister;
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};
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extern EFI_GUID gEfiSmmUsbDispatchProtocolGuid;
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#endif
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