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ISA Bus driver code scrub.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8505 6f19259b-4bc3-4df7-8a09-765794883524
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rsun3
2009-06-10 06:35:16 +00:00
parent 966877cbd3
commit 6fcb2d910a
7 changed files with 624 additions and 738 deletions
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217
IntelFrameworkModulePkg/Bus/Isa/IsaBusDxe/InternalIsaBus.h
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@@ -1,7 +1,7 @@
/**@file
The header file for ISA bus driver
Copyright (c) 2006 - 2007, Intel Corporation. <BR>
Copyright (c) 2006 - 2009, Intel Corporation. <BR>
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
@@ -12,8 +12,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _EFI_ISA_BUS_H
#define _EFI_ISA_BUS_H
#ifndef _INTERNAL_ISA_BUS_H_
#define _INTERNAL_ISA_BUS_H_
#include <PiDxe.h>
@@ -40,13 +40,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include "ComponentName.h"
//
// Global Variables
//
extern EFI_DRIVER_BINDING_PROTOCOL gIsaBusControllerDriver;
extern EFI_ISA_IO_PROTOCOL IsaIoInterface;
//
// 8237 DMA registers
//
@@ -165,70 +158,92 @@ typedef struct {
// EFI Driver Binding Protocol Interface Functions
//
/**
Tests to see if a controller can be managed by the ISA Bus Driver. If a child device is provided,
it further tests to see if this driver supports creating a handle for the specified child device.
Note that the ISA Bus driver always creates all of its child handles on the first call to Start().
How the Start() function of a driver is implemented can affect how the Supported() function is implemented.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] Controller The handle of the controller to test.
@param[in] RemainingDevicePath A pointer to the remaining portion of a device path.
@retval EFI_SUCCESS The device is supported by this driver.
@retval EFI_ALREADY_STARTED The device is already being managed by this driver.
@retval EFI_ACCESS_DENIED The device is already being managed by a different driver
or an application that requires exclusive access.
@retval EFI_UNSUPPORTED The device is is not supported by this driver.
**/
EFI_STATUS
EFIAPI
IsaBusControllerDriverSupported (
IN EFI_DRIVER_BINDING_PROTOCOL * This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL
)
);
/**
Start this driver on ControllerHandle.
Note that the ISA Bus driver always creates all of its child handles on the first call to Start().
The Start() function is designed to be invoked from the EFI boot service ConnectController().
As a result, much of the error checking on the parameters to Start() has been moved into this
common boot service. It is legal to call Start() from other locations, but the following calling
restrictions must be followed or the system behavior will not be deterministic.
1. ControllerHandle must be a valid EFI_HANDLE.
2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned
EFI_DEVICE_PATH_PROTOCOL.
3. Prior to calling Start(), the Supported() function for the driver specified by This must
have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.
Routine Description:
This function checks to see if a controller can be managed by the ISA Bus
Driver. This is done by checking to see if the controller supports the
EFI_PCI_IO_PROTOCOL protocol, and then looking at the PCI Configuration
Header to see if the device is a PCI to ISA bridge. The class code of
PCI to ISA bridge: Base class 06h, Sub class 01h Interface 00h
Arguments:
This - The EFI_DRIVER_BINDING_PROTOCOL instance.
Controller - The handle of the device to check.
RemainingDevicePath - A pointer to the remaining portion of a device path.
Returns:
EFI_SUCCESS - The device is supported by this driver.
EFI_UNSUPPORTED - The device is not supported by this driver.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] ControllerHandle The handle of the controller to start. This handle
must support a protocol interface that supplies
an I/O abstraction to the driver.
@param[in] RemainingDevicePath A pointer to the remaining portion of a device path.
This parameter is ignored by device drivers, and is optional for bus drivers.
@retval EFI_SUCCESS The device was started.
@retval EFI_DEVICE_ERROR The device could not be started due to a device error.
Currently not implemented.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
@retval Others The driver failded to start the device.
**/
;
EFI_STATUS
EFIAPI
IsaBusControllerDriverStart (
IN EFI_DRIVER_BINDING_PROTOCOL * This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL
)
);
/**
Stop this driver on ControllerHandle.
The Stop() function is designed to be invoked from the EFI boot service DisconnectController().
As a result, much of the error checking on the parameters to Stop() has been moved
into this common boot service. It is legal to call Stop() from other locations,
but the following calling restrictions must be followed or the system behavior will not be deterministic.
1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this
same driver's Start() function.
2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid
EFI_HANDLE. In addition, all of these handles must have been created in this driver's
Start() function, and the Start() function must have called OpenProtocol() on
ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] ControllerHandle A handle to the device being stopped. The handle must
support a bus specific I/O protocol for the driver
to use to stop the device.
@param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.
@param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL
if NumberOfChildren is 0.
Routine Description:
This function tells the ISA Bus Driver to start managing a PCI to ISA
Bridge controller.
Arguments:
This - The EFI_DRIVER_BINDING_PROTOCOL instance.
Controller - A handle to the device being started.
RemainingDevicePath - A pointer to the remaining portion of a device path.
Returns:
EFI_SUCCESS - The device was started.
EFI_UNSUPPORTED - The device is not supported.
EFI_DEVICE_ERROR - The device could not be started due to a device error.
EFI_ALREADY_STARTED - The device has already been started.
EFI_INVALID_PARAMETER - One of the parameters has an invalid value.
EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of
resources.
@retval EFI_SUCCESS The device was stopped.
@retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
**/
;
EFI_STATUS
EFIAPI
IsaBusControllerDriverStop (
@@ -236,38 +251,26 @@ IsaBusControllerDriverStop (
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE * ChildHandleBuffer OPTIONAL
)
/**
Routine Description:
This function tells the ISA Bus Driver to stop managing a PCI to ISA
Bridge controller.
Arguments:
This - The EFI_DRIVER_BINDING_PROTOCOL instance.
Controller - A handle to the device being stopped.
NumberOfChindren - The number of child device handles in ChildHandleBuffer.
ChildHandleBuffer - An array of child handles to be freed.
Returns:
EFI_SUCCESS - The device was stopped.
EFI_DEVICE_ERROR - The device could not be stopped due to a device error.
EFI_NOT_STARTED - The device has not been started.
EFI_INVALID_PARAMETER - One of the parameters has an invalid value.
EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of
resources.
**/
;
);
//
// Function Prototypes
//
/**
Create EFI Handle for a ISA device found via ISA ACPI Protocol
@param[in] This The EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] Controller The handle of ISA bus controller(PCI to ISA bridge)
@param[in] PciIo The Pointer to the PCI protocol
@param[in] ParentDevicePath Device path of the ISA bus controller
@param[in] IsaDeviceResourceList The resource list of the ISA device
@param[in] ChildDevicePath The pointer to the child device.
@retval EFI_SUCCESS The handle for the child device was created.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
@retval EFI_DEVICE_ERROR The handle for the child device can not be created.
**/
EFI_STATUS
IsaCreateDevice (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
@@ -276,53 +279,21 @@ IsaCreateDevice (
IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,
IN EFI_ISA_ACPI_RESOURCE_LIST *IsaDeviceResourceList,
OUT EFI_DEVICE_PATH_PROTOCOL **ChildDevicePath
)
);
/**
Initializes an ISA I/O Instance
Routine Description:
@param[in] IsaIoDevice The iso device to be initialized.
@param[in] IsaDeviceResourceList The resource list.
Create ISA device found by IsaPnpProtocol
Arguments:
This - The EFI_DRIVER_BINDING_PROTOCOL instance.
Controller - The handle of ISA bus controller(PCI to ISA bridge)
PciIo - The Pointer to the PCI protocol
ParentDevicePath - Device path of the ISA bus controller
IsaDeviceResourceList - The resource list of the ISA device
ChildDevicePath - The pointer to the child device.
Returns:
EFI_SUCCESS - Create the child device.
EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of
resources.
EFI_DEVICE_ERROR - Can not create child device.
@retval None
**/
;
EFI_STATUS
VOID
InitializeIsaIoInstance (
IN ISA_IO_DEVICE *IsaIoDevice,
IN EFI_ISA_ACPI_RESOURCE_LIST *IsaDevice
)
/**
Routine Description:
Initializes an ISA I/O Instance
Arguments:
IsaIoDevice - The iso device to be initialized.
IsaDevice - The resource list.
Returns:
EFI_SUCCESS - Initial success.
**/
;
);
#endif