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[efi] Add basic implementation of EFI SIMPLE_NETWORK_PROTOCOL
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This implementation is tested and working, but not currently tied in
to the EFI build.
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Michael Brown committed Oct 16, 2008
1 parent 3a505df commit c99b16c
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166 changes: 166 additions & 0 deletions src/include/gpxe/efi/Protocol/DriverBinding.h
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/** @file
UEFI DriverBinding Protocol is defined in UEFI specification.
This protocol is produced by every driver that follows the UEFI Driver Model,
and it is the central component that allows drivers and controllers to be managed.
Copyright (c) 2006 - 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.
**/

#ifndef __EFI_DRIVER_BINDING_H__
#define __EFI_DRIVER_BINDING_H__

#include <gpxe/efi/PiDxe.h>
#include <gpxe/efi/Protocol/DevicePath.h>
///
/// Global ID for the ControllerHandle Driver Protocol
///
#define EFI_DRIVER_BINDING_PROTOCOL_GUID \
{ \
0x18a031ab, 0xb443, 0x4d1a, {0xa5, 0xc0, 0xc, 0x9, 0x26, 0x1e, 0x9f, 0x71 } \
}

typedef struct _EFI_DRIVER_BINDING_PROTOCOL EFI_DRIVER_BINDING_PROTOCOL;

/**
Test to see if this driver supports ControllerHandle.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to test
@param RemainingDevicePath Optional parameter use to pick a specific child
device to start.
@retval EFI_SUCCESS This driver supports this device
@retval EFI_ALREADY_STARTED This driver is already running on this device
@retval other This driver does not support this device
**/
typedef
EFI_STATUS
(EFIAPI *EFI_DRIVER_BINDING_SUPPORTED)(
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
);

/**
Start this driver on ControllerHandle.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to bind driver to
@param RemainingDevicePath Optional parameter use to pick a specific child
device to start.
@retval EFI_SUCCESS This driver is added to ControllerHandle
@retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle
@retval other This driver does not support this device
**/
typedef
EFI_STATUS
(EFIAPI *EFI_DRIVER_BINDING_START)(
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
);

/**
Stop this driver on ControllerHandle.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to stop driver on
@param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
children is zero stop the entire bus driver.
@param ChildHandleBuffer List of Child Handles to Stop.
@retval EFI_SUCCESS This driver is removed ControllerHandle
@retval other This driver was not removed from this device
**/
typedef
EFI_STATUS
(EFIAPI *EFI_DRIVER_BINDING_STOP)(
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer OPTIONAL
);

//
// Interface structure for the ControllerHandle Driver Protocol
//
/**
@par Protocol Description:
This protocol provides the services required to determine if a driver supports a given controller.
If a controller is supported, then it also provides routines to start and stop the controller.
@param Supported
Tests to see if this driver supports a given controller. This service
is called by the EFI boot service ConnectController(). In
order to make drivers as small as possible, there are a few calling
restrictions for this service. ConnectController() must
follow these calling restrictions. If any other agent wishes to call
Supported() it must also follow these calling restrictions.
@param Start
Starts a controller using this driver. This service is called by the
EFI boot service ConnectController(). In order to make
drivers as small as possible, there are a few calling restrictions for
this service. ConnectController() must follow these
calling restrictions. If any other agent wishes to call Start() it
must also follow these calling restrictions.
@param Stop
Stops a controller using this driver. This service is called by the
EFI boot service DisconnectController(). In order to
make drivers as small as possible, there are a few calling
restrictions for this service. DisconnectController()
must follow these calling restrictions. If any other agent wishes
to call Stop() it must also follow these calling restrictions.
@param Version
The version number of the UEFI driver that produced the
EFI_DRIVER_BINDING_PROTOCOL. This field is used by
the EFI boot service ConnectController() to determine
the order that driver's Supported() service will be used when
a controller needs to be started. EFI Driver Binding Protocol
instances with higher Version values will be used before ones
with lower Version values. The Version values of 0x0-
0x0f and 0xfffffff0-0xffffffff are reserved for
platform/OEM specific drivers. The Version values of 0x10-
0xffffffef are reserved for IHV-developed drivers.
@param ImageHandle
The image handle of the UEFI driver that produced this instance
of the EFI_DRIVER_BINDING_PROTOCOL.
@param DriverBindingHandle
The handle on which this instance of the
EFI_DRIVER_BINDING_PROTOCOL is installed. In most
cases, this is the same handle as ImageHandle. However, for
UEFI drivers that produce more than one instance of the
EFI_DRIVER_BINDING_PROTOCOL, this value may not be
the same as ImageHandle.
**/
struct _EFI_DRIVER_BINDING_PROTOCOL {
EFI_DRIVER_BINDING_SUPPORTED Supported;
EFI_DRIVER_BINDING_START Start;
EFI_DRIVER_BINDING_STOP Stop;
UINT32 Version;
EFI_HANDLE ImageHandle;
EFI_HANDLE DriverBindingHandle;
};

extern EFI_GUID gEfiDriverBindingProtocolGuid;

#endif

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