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297 lines
15 KiB
C
297 lines
15 KiB
C
/** @file
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The header file of IScsiDriver.c.
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Copyright (c) 2004 - 2008, Intel Corporation.<BR>
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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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**/
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#ifndef _ISCSI_DRIVER_H_
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#define _ISCSI_DRIVER_H_
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#include <Uefi.h>
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#include <Protocol/DevicePath.h>
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#include <Protocol/LoadedImage.h>
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#include <Protocol/HiiConfigAccess.h>
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#include <Protocol/HiiDatabase.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiLib.h>
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#include <Library/DevicePathLib.h>
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#include <Protocol/DriverBinding.h>
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#include <Protocol/ScsiPassThruExt.h>
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#include <Protocol/IScsiInitiatorName.h>
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#include <Protocol/ComponentName.h>
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#include <Protocol/ComponentName2.h>
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#define ISCSI_PRIVATE_GUID \
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{ 0xfa3cde4c, 0x87c2, 0x427d, {0xae, 0xde, 0x7d, 0xd0, 0x96, 0xc8, 0x8c, 0x58} }
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#define ISCSI_INITIATOR_NAME_VAR_NAME L"I_NAME"
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extern EFI_COMPONENT_NAME2_PROTOCOL gIScsiComponentName2;
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extern EFI_COMPONENT_NAME_PROTOCOL gIScsiComponentName;
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extern EFI_ISCSI_INITIATOR_NAME_PROTOCOL gIScsiInitiatorName;
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extern EFI_GUID mIScsiPrivateGuid;
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typedef struct _ISCSI_PRIVATE_PROTOCOL {
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UINT32 Reserved;
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} ISCSI_PRIVATE_PROTOCOL;
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//
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// EFI Driver Binding Protocol for iSCSI driver.
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//
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/**
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Tests to see if this driver supports a given controller. If a child device is provided,
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it further tests to see if this driver supports creating a handle for the specified child device.
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@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
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@param[in] ControllerHandle The handle of the controller to test. This handle
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must support a protocol interface that supplies
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an I/O abstraction to the driver.
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@param[in] RemainingDevicePath A pointer to the remaining portion of a device path.
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This parameter is ignored by device drivers, and is optional for bus drivers.
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@retval EFI_SUCCESS The device specified by ControllerHandle and
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RemainingDevicePath is supported by the driver specified by This.
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@retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
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RemainingDevicePath is already being managed by the driver
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specified by This.
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@retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
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RemainingDevicePath is already being managed by a different
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driver or an application that requires exclusive acces.
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Currently not implemented.
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@retval EFI_UNSUPPORTED The device specified by ControllerHandle and
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RemainingDevicePath is not supported by the driver specified by This.
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**/
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EFI_STATUS
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EFIAPI
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IScsiDriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
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);
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/**
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Start this driver on ControllerHandle. The Start() function is designed to be
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invoked from the EFI boot service ConnectController(). As a result, much of
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the error checking on the parameters to Start() has been moved into this
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common boot service. It is legal to call Start() from other locations,
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but the following calling restrictions must be followed or the system behavior will not be deterministic.
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1. ControllerHandle must be a valid EFI_HANDLE.
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2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned
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EFI_DEVICE_PATH_PROTOCOL.
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3. Prior to calling Start(), the Supported() function for the driver specified by This must
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have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.
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@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
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@param[in] ControllerHandle The handle of the controller to start. This handle
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must support a protocol interface that supplies
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an I/O abstraction to the driver.
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@param[in] RemainingDevicePath A pointer to the remaining portion of a device path.
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This parameter is ignored by device drivers, and is optional for bus drivers.
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@retval EFI_SUCCESS The device was started.
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@retval EFI_DEVICE_ERROR The device could not be started due to a device error.
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Currently not implemented.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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@retval Others The driver failded to start the device.
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**/
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EFI_STATUS
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EFIAPI
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IScsiDriverBindingStart (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
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);
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/**
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Stop this driver on ControllerHandle.
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Release the control of this controller and remove the IScsi functions. The Stop()
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function is designed to be invoked from the EFI boot service DisconnectController().
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As a result, much of the error checking on the parameters to Stop() has been moved
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into this common boot service. It is legal to call Stop() from other locations,
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but the following calling restrictions must be followed or the system behavior will not be deterministic.
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1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this
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same driver's Start() function.
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2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid
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EFI_HANDLE. In addition, all of these handles must have been created in this driver's
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Start() function, and the Start() function must have called OpenProtocol() on
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ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.
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@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
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@param[in] ControllerHandle A handle to the device being stopped. The handle must
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support a bus specific I/O protocol for the driver
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to use to stop the device.
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@param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.Not used.
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@param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL
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if NumberOfChildren is 0.Not used.
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@retval EFI_SUCCESS The device was stopped.
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@retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
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**/
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EFI_STATUS
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EFIAPI
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IScsiDriverBindingStop (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN UINTN NumberOfChildren,
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IN EFI_HANDLE *ChildHandleBuffer
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);
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//
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// EFI Component Name Protocol for IScsi driver.
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//
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/**
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Retrieves a Unicode string that is the user readable name of the EFI Driver.
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This function retrieves the user readable name of a driver in the form of a
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Unicode string. If the driver specified by This has a user readable name in
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the language specified by Language, then a pointer to the driver name is
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returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
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by This does not support the language specified by Language,
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then EFI_UNSUPPORTED is returned.
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@param[in] This A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
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@param[in] Language A pointer to a three character ISO 639-2 language identifier.
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This is the language of the driver name that that the caller
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is requesting, and it must match one of the languages specified
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in SupportedLanguages. The number of languages supported by a
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driver is up to the driver writer.
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@param[out] DriverName A pointer to the Unicode string to return. This Unicode string
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is the name of the driver specified by This in the language
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specified by Language.
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@retval EFI_SUCCESS The Unicode string for the Driver specified by This
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and the language specified by Language was returned
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in DriverName.
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@retval EFI_INVALID_PARAMETER Language is NULL.
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@retval EFI_INVALID_PARAMETER DriverName is NULL.
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@retval EFI_UNSUPPORTED The driver specified by This does not support the
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language specified by Language.
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**/
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EFI_STATUS
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EFIAPI
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IScsiComponentNameGetDriverName (
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IN EFI_COMPONENT_NAME_PROTOCOL *This,
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IN CHAR8 *Language,
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OUT CHAR16 **DriverName
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);
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/**
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Retrieves a Unicode string that is the user readable name of the controller
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that is being managed by an EFI Driver.Currently not implemented.
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@param[in] This A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
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@param[in] ControllerHandle The handle of a controller that the driver specified by
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This is managing. This handle specifies the controller
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whose name is to be returned.
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@param[in] ChildHandle The handle of the child controller to retrieve the name
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of. This is an optional parameter that may be NULL. It
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will be NULL for device drivers. It will also be NULL
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for a bus drivers that wish to retrieve the name of the
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bus controller. It will not be NULL for a bus driver
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that wishes to retrieve the name of a child controller.
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@param[in] Language A pointer to a three character ISO 639-2 language
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identifier. This is the language of the controller name
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that that the caller is requesting, and it must match one
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of the languages specified in SupportedLanguages. The
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number of languages supported by a driver is up to the
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driver writer.
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@param[out] ControllerName A pointer to the Unicode string to return. This Unicode
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string is the name of the controller specified by
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ControllerHandle and ChildHandle in the language specified
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by Language from the point of view of the driver specified
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by This.
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@retval EFI_SUCCESS The Unicode string for the user readable name in the
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language specified by Language for the driver
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specified by This was returned in DriverName.
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@retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.
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@retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid EFI_HANDLE.
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@retval EFI_INVALID_PARAMETER Language is NULL.
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@retval EFI_INVALID_PARAMETER ControllerName is NULL.
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@retval EFI_UNSUPPORTED The driver specified by This is not currently managing
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the controller specified by ControllerHandle and
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ChildHandle.
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@retval EFI_UNSUPPORTED The driver specified by This does not support the
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language specified by Language.
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**/
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EFI_STATUS
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EFIAPI
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IScsiComponentNameGetControllerName (
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IN EFI_COMPONENT_NAME_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_HANDLE ChildHandle OPTIONAL,
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IN CHAR8 *Language,
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OUT CHAR16 **ControllerName
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);
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//
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// EFI IScsi Initiator Name Protocol for IScsi driver.
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//
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/**
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Retrieves the current set value of iSCSI Initiator Name.
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@param[in] This Pointer to the EFI_ISCSI_INITIATOR_NAME_PROTOCOL instance.
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@param[in, out] BufferSize Size of the buffer in bytes pointed to by Buffer / Actual size of the
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variable data buffer.
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@param[out] Buffer Pointer to the buffer for data to be read.
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@retval EFI_SUCCESS Data was successfully retrieved into the provided buffer and the
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BufferSize was sufficient to handle the iSCSI initiator name
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@retval EFI_BUFFER_TOO_SMALL BufferSize is too small for the result.
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@retval EFI_INVALID_PARAMETER BufferSize or Buffer is NULL.
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@retval EFI_DEVICE_ERROR The iSCSI initiator name could not be retrieved due to a hardware error.
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@retval Others Some unexpected error happened.
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**/
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EFI_STATUS
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EFIAPI
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IScsiGetInitiatorName (
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IN EFI_ISCSI_INITIATOR_NAME_PROTOCOL *This,
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IN OUT UINTN *BufferSize,
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OUT VOID *Buffer
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);
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/**
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Sets the iSCSI Initiator Name.
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@param[in] This Pointer to the EFI_ISCSI_INITIATOR_NAME_PROTOCOL instance.
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@param[in, out] BufferSize Size of the buffer in bytes pointed to by Buffer.
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@param[in] Buffer Pointer to the buffer for data to be written.
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@retval EFI_SUCCESS Data was successfully stored by the protocol.
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@retval EFI_UNSUPPORTED Platform policies do not allow for data to be written.
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Currently not implemented.
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@retval EFI_INVALID_PARAMETER BufferSize or Buffer is NULL, or BufferSize exceeds the maximum allowed limit.
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@retval EFI_DEVICE_ERROR The data could not be stored due to a hardware error.
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@retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the data.
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@retval EFI_PROTOCOL_ERROR Input iSCSI initiator name does not adhere to RFC 3720
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(and other related protocols)
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@retval Others Some unexpected error happened.
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**/
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EFI_STATUS
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EFIAPI
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IScsiSetInitiatorName (
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IN EFI_ISCSI_INITIATOR_NAME_PROTOCOL *This,
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IN OUT UINTN *BufferSize,
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IN VOID *Buffer
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);
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#endif
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