/** @file
The header file of IScsiDriver.c.
Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.
(C) Copyright 2017 Hewlett Packard Enterprise Development LP
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _ISCSI_DRIVER_H_
#define _ISCSI_DRIVER_H_
#define ISCSI_V4_PRIVATE_GUID \
{ \
0xfa3cde4c, 0x87c2, 0x427d, { 0xae, 0xde, 0x7d, 0xd0, 0x96, 0xc8, 0x8c, 0x58 } \
}
#define ISCSI_V6_PRIVATE_GUID \
{ \
0x28be27e5, 0x66cc, 0x4a31, { 0xa3, 0x15, 0xdb, 0x14, 0xc3, 0x74, 0x4d, 0x85 } \
}
#define ISCSI_INITIATOR_NAME_VAR_NAME L"I_NAME"
#define IP_MODE_AUTOCONFIG_IP4 3
#define IP_MODE_AUTOCONFIG_IP6 4
#define ALWAYS_USE_UEFI_ISCSI_AND_IGNORE_ISCSI_HBA 0x00
#define STOP_UEFI_ISCSI_IF_HBA_INSTALL_AIP 0x01
#define STOP_UEFI_ISCSI_IF_AIP_SUPPORT_IP4 0x02
#define STOP_UEFI_ISCSI_IF_AIP_SUPPORT_IP6 0x04
#define STOP_UEFI_ISCSI_IF_AIP_SUPPORT_OFFLOAD 0x08
#define STOP_UEFI_ISCSI_IF_AIP_SUPPORT_MPIO 0x10
#define STOP_UEFI_ISCSI_IF_AIP_CONFIGURED_IP4 0x20
#define STOP_UEFI_ISCSI_IF_AIP_CONFIGURED_IP6 0x40
#define ALWAYS_USE_ISCSI_HBA_AND_IGNORE_UEFI_ISCSI 0xFF
extern EFI_COMPONENT_NAME2_PROTOCOL gIScsiComponentName2;
extern EFI_COMPONENT_NAME_PROTOCOL gIScsiComponentName;
extern EFI_UNICODE_STRING_TABLE *gIScsiControllerNameTable;
extern EFI_ISCSI_INITIATOR_NAME_PROTOCOL gIScsiInitiatorName;
extern EFI_AUTHENTICATION_INFO_PROTOCOL gIScsiAuthenticationInfo;
extern EFI_EXT_SCSI_PASS_THRU_PROTOCOL gIScsiExtScsiPassThruProtocolTemplate;
extern EFI_GUID gIScsiV4PrivateGuid;
extern EFI_GUID gIScsiV6PrivateGuid;
typedef struct {
CHAR16 PortString[ISCSI_NAME_IFR_MAX_SIZE];
LIST_ENTRY NicInfoList;
UINT8 NicCount;
UINT8 CurrentNic;
UINT8 MaxNic;
BOOLEAN Ipv6Flag;
BOOLEAN OneSessionEstablished;
BOOLEAN EnableMpio;
UINT8 MpioCount; // The number of attempts in MPIO.
UINT8 Krb5MpioCount; // The number of attempts login with KRB5 in MPIO.
UINT8 SinglePathCount; // The number of single path attempts.
UINT8 ValidSinglePathCount; // The number of valid single path attempts.
UINT8 BootSelectedIndex;
UINT8 AttemptCount;
LIST_ENTRY AttemptConfigs; // User configured Attempt list.
CHAR8 InitiatorName[ISCSI_NAME_MAX_SIZE];
UINTN InitiatorNameLength;
} ISCSI_PRIVATE_DATA;
extern ISCSI_PRIVATE_DATA *mPrivate;
typedef struct {
LIST_ENTRY Link;
UINT32 HwAddressSize;
EFI_MAC_ADDRESS PermanentAddress;
UINT8 NicIndex;
UINT16 VlanId;
UINTN BusNumber;
UINTN DeviceNumber;
UINTN FunctionNumber;
BOOLEAN Ipv6Available;
} ISCSI_NIC_INFO;
typedef struct _ISCSI_PRIVATE_PROTOCOL {
UINT32 Reserved;
} ISCSI_PRIVATE_PROTOCOL;
//
// EFI Driver Binding Protocol for iSCSI driver.
//
/**
Tests to see if this driver supports a given controller. If a child device is provided,
it tests to see if this driver supports creating a handle for the specified child device.
This function checks to see if the driver specified by This supports the device specified by
ControllerHandle. Drivers typically use the device path attached to
ControllerHandle and/or the services from the bus I/O abstraction attached to
ControllerHandle to determine if the driver supports ControllerHandle. This function
may be called many times during platform initialization. In order to reduce boot times, the tests
performed by this function must be very small and take as little time as possible to execute. This
function must not change the state of any hardware devices, and this function must be aware that the
device specified by ControllerHandle may already be managed by the same driver or a
different driver. This function must match its calls to AllocatePages() with FreePages(),
AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().
Since ControllerHandle may have been previously started by the same driver, if a protocol is
already in the opened state, then it must not be closed with CloseProtocol(). This is required
to guarantee the state of ControllerHandle is not modified by this function.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] ControllerHandle The handle of the controller to test. 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. For bus drivers, if this parameter is not NULL, then
the bus driver must determine if the bus controller specified
by ControllerHandle and the child controller specified
by RemainingDevicePath are both supported by this
bus driver.
@retval EFI_SUCCESS The device specified by ControllerHandle and
RemainingDevicePath is supported by the driver specified by This.
@retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
RemainingDevicePath is already managed by the driver
specified by This.
@retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
RemainingDevicePath is already managed by a different
driver or an application that requires exclusive access.
Currently not implemented.
@retval EFI_UNSUPPORTED The device specified by ControllerHandle and
RemainingDevicePath is not supported by the driver specified by This.
**/
EFI_STATUS
EFIAPI
IScsiIp4DriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
);
/**
Starts a device controller or a bus controller.
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.
@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. For a bus driver, if this parameter is NULL, then handles
for all the children of Controller are created by this driver.
If this parameter is not NULL and the first Device Path Node is
not the End of Device Path Node, then only the handle for the
child device specified by the first Device Path Node of
RemainingDevicePath is created by this driver.
If the first Device Path Node of RemainingDevicePath is
the End of Device Path Node, no child handle is created by this
driver.
@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 failed to start the device.
**/
EFI_STATUS
EFIAPI
IScsiIp4DriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
);
/**
Stops a device controller or a bus controller.
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.
@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
IScsiIp4DriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer OPTIONAL
);
/**
Tests to see if this driver supports a given controller. If a child device is provided,
it tests to see if this driver supports creating a handle for the specified child device.
This function checks to see if the driver specified by This supports the device specified by
ControllerHandle. Drivers typically use the device path attached to
ControllerHandle and/or the services from the bus I/O abstraction attached to
ControllerHandle to determine if the driver supports ControllerHandle. This function
may be called many times during platform initialization. In order to reduce boot times, the tests
performed by this function must be very small and take as little time as possible to execute. This
function must not change the state of any hardware devices, and this function must be aware that the
device specified by ControllerHandle may already be managed by the same driver or a
different driver. This function must match its calls to AllocatePages() with FreePages(),
AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().
Since ControllerHandle may have been previously started by the same driver, if a protocol is
already in the opened state, then it must not be closed with CloseProtocol(). This is required
to guarantee the state of ControllerHandle is not modified by this function.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] ControllerHandle The handle of the controller to test. 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. For bus drivers, if this parameter is not NULL, then
the bus driver must determine if the bus controller specified
by ControllerHandle and the child controller specified
by RemainingDevicePath are both supported by this
bus driver.
@retval EFI_SUCCESS The device specified by ControllerHandle and
RemainingDevicePath is supported by the driver specified by This.
@retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
RemainingDevicePath is already managed by the driver
specified by This.
@retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
RemainingDevicePath is already managed by a different
driver or an application that requires exclusive access.
Currently not implemented.
@retval EFI_UNSUPPORTED The device specified by ControllerHandle and
RemainingDevicePath is not supported by the driver specified by This.
**/
EFI_STATUS
EFIAPI
IScsiIp6DriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
);
/**
Starts a device controller or a bus controller.
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.
@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. For a bus driver, if this parameter is NULL, then handles
for all the children of Controller are created by this driver.
If this parameter is not NULL and the first Device Path Node is
not the End of Device Path Node, then only the handle for the
child device specified by the first Device Path Node of
RemainingDevicePath is created by this driver.
If the first Device Path Node of RemainingDevicePath is
the End of Device Path Node, no child handle is created by this
driver.
@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 failed to start the device.
**/
EFI_STATUS
EFIAPI
IScsiIp6DriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
);
/**
Stops a device controller or a bus controller.
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.
@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
IScsiIp6DriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer OPTIONAL
);
//
// EFI Component Name(2) Protocol for iSCSI driver.
//
/**
Retrieves a Unicode string that is the user readable name of the driver.
This function retrieves the user readable name of a driver in the form of a
Unicode string. If the driver specified by This has a user readable name in
the language specified by Language, then a pointer to the driver name is
returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
by This does not support the language specified by Language,
then EFI_UNSUPPORTED is returned.
@param[in] This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
EFI_COMPONENT_NAME_PROTOCOL instance.
@param[in] Language A pointer to a Null-terminated ASCII string
array indicating the language. This is the
language of the driver name that the caller is
requesting, and it must match one of the
languages specified in SupportedLanguages. The
number of languages supported by a driver is up
to the driver writer. Language is specified
in RFC 4646 or ISO 639-2 language code format.
@param[out] DriverName A pointer to the Unicode string to return.
This Unicode string is the name of the
driver specified by This in the language
specified by Language.
@retval EFI_SUCCESS The Unicode string for the Driver specified by
This and the language specified by Language was
returned in DriverName.
@retval EFI_INVALID_PARAMETER Language is NULL.
@retval EFI_INVALID_PARAMETER DriverName is NULL.
@retval EFI_UNSUPPORTED The driver specified by This does not support
the language specified by Language.
**/
EFI_STATUS
EFIAPI
IScsiComponentNameGetDriverName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN CHAR8 *Language,
OUT CHAR16 **DriverName
);
/**
Retrieves a Unicode string that is the user readable name of the controller
that is being managed by a driver.
This function retrieves the user readable name of the controller specified by
ControllerHandle and ChildHandle in the form of a Unicode string. If the
driver specified by This has a user readable name in the language specified by
Language, then a pointer to the controller name is returned in ControllerName,
and EFI_SUCCESS is returned. If the driver specified by This is not currently
managing the controller specified by ControllerHandle and ChildHandle,
then EFI_UNSUPPORTED is returned. If the driver specified by This does not
support the language specified by Language, then EFI_UNSUPPORTED is returned.
@param[in] This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
EFI_COMPONENT_NAME_PROTOCOL instance.
@param[in] ControllerHandle The handle of a controller that the driver
specified by This is managing. This handle
specifies the controller whose name is to be
returned.
@param[in] ChildHandle The handle of the child controller to retrieve
the name of. This is an optional parameter that
may be NULL. It will be NULL for device
drivers. It will also be NULL for a bus drivers
that wish to retrieve the name of the bus
controller. It will not be NULL for a bus
driver that wishes to retrieve the name of a
child controller.
@param[in] Language A pointer to a Null-terminated ASCII string
array indicating the language. This is the
language of the driver name that the caller is
requesting, and it must match one of the
languages specified in SupportedLanguages. The
number of languages supported by a driver is
determined by the driver writer. Language is
specified inRFC 4646 or ISO 639-2 language code
format.
@param[out] ControllerName A pointer to the Unicode string to return.
This Unicode string is the name of the
controller specified by ControllerHandle and
ChildHandle in the language specified by
Language from the point of view of the driver
specified by This.
@retval EFI_SUCCESS The Unicode string for the user readable name in
the language specified by Language for the
driver specified by This was returned in
DriverName.
@retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
@retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
EFI_HANDLE.
@retval EFI_INVALID_PARAMETER Language is NULL.
@retval EFI_INVALID_PARAMETER ControllerName is NULL.
@retval EFI_UNSUPPORTED The driver specified by This is not currently
managing the controller specified by
ControllerHandle and ChildHandle.
@retval EFI_UNSUPPORTED The driver specified by This does not support
the language specified by Language.
**/
EFI_STATUS
EFIAPI
IScsiComponentNameGetControllerName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ChildHandle OPTIONAL,
IN CHAR8 *Language,
OUT CHAR16 **ControllerName
);
//
// EFI iSCSI Initiator Name Protocol for iSCSI driver.
//
/**
Retrieves the current set value of iSCSI Initiator Name.
@param[in] This Pointer to the EFI_ISCSI_INITIATOR_NAME_PROTOCOL
instance.
@param[in, out] BufferSize Size of the buffer in bytes pointed to by Buffer /
Actual size of the variable data buffer.
@param[out] Buffer Pointer to the buffer for data to be read.
@retval EFI_SUCCESS Data was successfully retrieved into the provided
buffer and the BufferSize was sufficient to handle
the iSCSI initiator name.
@retval EFI_BUFFER_TOO_SMALL BufferSize is too small for the result. BufferSize
will be updated with the size required to complete
the request. Buffer will not be affected.
@retval EFI_INVALID_PARAMETER BufferSize is NULL. BufferSize and Buffer will not
be affected.
@retval EFI_INVALID_PARAMETER Buffer is NULL. BufferSize and Buffer will not be
affected.
@retval EFI_DEVICE_ERROR The iSCSI initiator name could not be retrieved
due to a hardware error.
**/
EFI_STATUS
EFIAPI
IScsiGetInitiatorName (
IN EFI_ISCSI_INITIATOR_NAME_PROTOCOL *This,
IN OUT UINTN *BufferSize,
OUT VOID *Buffer
);
/**
Sets the iSSI Initiator Name.
@param[in] This Pointer to the EFI_ISCSI_INITIATOR_NAME_PROTOCOL
instance.
@param[in, out] BufferSize Size of the buffer in bytes pointed to by Buffer.
@param[in] Buffer Pointer to the buffer for data to be written.
@retval EFI_SUCCESS Data was successfully stored by the protocol.
@retval EFI_UNSUPPORTED Platform policies do not allow for data to be
written.
@retval EFI_INVALID_PARAMETER BufferSize exceeds the maximum allowed limit.
BufferSize will be updated with the maximum size
required to complete the request.
@retval EFI_INVALID_PARAMETER Buffersize is NULL. BufferSize and Buffer will not
be affected.
@retval EFI_INVALID_PARAMETER Buffer is NULL. BufferSize and Buffer will not be
affected.
@retval EFI_DEVICE_ERROR The data could not be stored due to a hardware
error.
@retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the data
@retval EFI_PROTOCOL_ERROR Input iSCSI initiator name does not adhere to RFC
3720
**/
EFI_STATUS
EFIAPI
IScsiSetInitiatorName (
IN EFI_ISCSI_INITIATOR_NAME_PROTOCOL *This,
IN OUT UINTN *BufferSize,
IN VOID *Buffer
);
//
// EFI_AUTHENTICATION_INFO_PROTOCOL for iSCSI driver.
//
/**
Retrieves the authentication information associated with a particular controller handle.
@param[in] This Pointer to the EFI_AUTHENTICATION_INFO_PROTOCOL.
@param[in] ControllerHandle Handle to the Controller.
@param[out] Buffer Pointer to the authentication information. This function is
responsible for allocating the buffer and it is the caller's
responsibility to free buffer when the caller is finished with buffer.
@retval EFI_DEVICE_ERROR The authentication information could not be
retrieved due to a hardware error.
**/
EFI_STATUS
EFIAPI
IScsiGetAuthenticationInfo (
IN EFI_AUTHENTICATION_INFO_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
OUT VOID **Buffer
);
/**
Set the authentication information for a given controller handle.
@param[in] This Pointer to the EFI_AUTHENTICATION_INFO_PROTOCOL.
@param[in] ControllerHandle Handle to the Controller.
@param[in] Buffer Pointer to the authentication information.
@retval EFI_UNSUPPORTED If the platform policies do not allow setting of
the authentication information.
**/
EFI_STATUS
EFIAPI
IScsiSetAuthenticationInfo (
IN EFI_AUTHENTICATION_INFO_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN VOID *Buffer
);
//
// EFI_EXT_SCSI_PASS_THRU_PROTOCOL for iSCSI driver.
//
/**
Sends a SCSI Request Packet to a SCSI device that is attached to the SCSI channel.
This function supports both blocking I/O and nonblocking I/O. The blocking I/O
functionality is required, and the nonblocking I/O functionality is optional.
@param[in] This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param[in] Target The Target is an array of size TARGET_MAX_BYTES and it
represents the id of the SCSI device to send the SCSI
Request Packet. Each transport driver may choose to
utilize a subset of this size to suit the needs
of transport target representation. For example, a
Fibre Channel driver may use only 8 bytes (WWN)
to represent an FC target.
@param[in] Lun The LUN of the SCSI device to send the SCSI Request Packet.
@param[in, out] Packet A pointer to the SCSI Request Packet to send to the
SCSI device specified by Target and Lun.
@param[in] Event If nonblocking I/O is not supported then Event is ignored,
and blocking I/O is performed. If Event is NULL, then
blocking I/O is performed. If Event is not NULL and non
blocking I/O is supported, then nonblocking I/O is performed,
and Event will be signaled when the SCSI Request Packet
completes.
@retval EFI_SUCCESS The SCSI Request Packet was sent by the host. For
bi-directional commands, InTransferLength bytes
were transferred from InDataBuffer.
For write and bi-directional commands, OutTransferLength
bytes were transferred by OutDataBuffer.
@retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was not executed.
The number of bytes that could be transferred is
returned in InTransferLength. For write and
bi-directional commands, OutTransferLength bytes
were transferred by OutDataBuffer.
@retval EFI_NOT_READY The SCSI Request Packet could not be sent because
there are too many SCSI Request Packets already
queued. The caller may retry later.
@retval EFI_DEVICE_ERROR A device error occurred while attempting to send
the SCSI Request Packet.
@retval EFI_INVALID_PARAMETER Target, Lun, or the contents of ScsiRequestPacket
are invalid.
@retval EFI_UNSUPPORTED The command described by the SCSI Request Packet
is not supported by the host adapter.
This includes the case of Bi-directional SCSI
commands not supported by the implementation.
The SCSI Request Packet was not sent,
so no additional status information is available.
@retval EFI_TIMEOUT A timeout occurred while waiting for the SCSI
Request Packet to execute.
**/
EFI_STATUS
EFIAPI
IScsiExtScsiPassThruFunction (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN UINT8 *Target,
IN UINT64 Lun,
IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet,
IN EFI_EVENT Event OPTIONAL
);
/**
Used to retrieve the list of legal Target IDs and LUNs for SCSI devices on
a SCSI channel. These can either be the list SCSI devices that are actually
present on the SCSI channel, or the list of legal Target Ids and LUNs for the
SCSI channel. Regardless, the caller of this function must probe the Target ID
and LUN returned to see if a SCSI device is actually present at that location
on the SCSI channel.
@param[in] This The EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param[in, out] Target On input, a pointer to the Target ID of a SCSI
device present on the SCSI channel. On output, a
pointer to the Target ID of the next SCSI device
present on a SCSI channel. An input value of
0xFFFFFFFF retrieves the Target ID of the first
SCSI device present on a SCSI channel.
@param[in, out] Lun On input, a pointer to the LUN of a SCSI device
present on the SCSI channel. On output, a pointer
to the LUN of the next SCSI device present on a
SCSI channel.
@retval EFI_SUCCESS The Target ID and Lun of the next SCSI device on
the SCSI channel was returned in Target and Lun.
@retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI
channel.
@retval EFI_INVALID_PARAMETER Target is not 0xFFFFFFFF,and Target and Lun were
not returned on a previous call to
GetNextDevice().
**/
EFI_STATUS
EFIAPI
IScsiExtScsiPassThruGetNextTargetLun (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN OUT UINT8 **Target,
IN OUT UINT64 *Lun
);
/**
Allocate and build a device path node for a SCSI device on a SCSI channel.
@param[in] This Protocol instance pointer.
@param[in] Target The Target ID of the SCSI device for which a
device path node is to be allocated and built.
@param[in] Lun The LUN of the SCSI device for which a device
path node is to be allocated and built.
@param[in, out] DevicePath A pointer to a single device path node that
describes the SCSI device specified by Target and
Lun. This function is responsible for allocating
the buffer DevicePath with the boot service
AllocatePool(). It is the caller's
responsibility to free DevicePath when the caller
is finished with DevicePath.
@retval EFI_SUCCESS The device path node that describes the SCSI
device specified by Target and Lun was allocated
and returned in DevicePath.
@retval EFI_NOT_FOUND The SCSI devices specified by Target and Lun does
not exist on the SCSI channel.
@retval EFI_INVALID_PARAMETER DevicePath is NULL.
@retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate
DevicePath.
**/
EFI_STATUS
EFIAPI
IScsiExtScsiPassThruBuildDevicePath (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN UINT8 *Target,
IN UINT64 Lun,
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
);
/**
Translate a device path node to a Target ID and LUN.
@param[in] This Protocol instance pointer.
@param[in] DevicePath A pointer to the device path node that describes
a SCSI device on the SCSI channel.
@param[out] Target A pointer to the Target ID of a SCSI device on
the SCSI channel.
@param[out] Lun A pointer to the LUN of a SCSI device on the SCSI
channel.
@retval EFI_SUCCESS DevicePath was successfully translated to a
Target ID and LUN, and they were returned in
Target and Lun.
@retval EFI_INVALID_PARAMETER DevicePath/Target/Lun is NULL.
@retval EFI_UNSUPPORTED This driver does not support the device path node
type in DevicePath.
@retval EFI_NOT_FOUND A valid translation from DevicePath to a Target
ID and LUN does not exist.
**/
EFI_STATUS
EFIAPI
IScsiExtScsiPassThruGetTargetLun (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
OUT UINT8 **Target,
OUT UINT64 *Lun
);
/**
Resets a SCSI channel.This operation resets all the SCSI devices connected to
the SCSI channel.
@param[in] This Protocol instance pointer.
@retval EFI_UNSUPPORTED It is not supported.
**/
EFI_STATUS
EFIAPI
IScsiExtScsiPassThruResetChannel (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This
);
/**
Resets a SCSI device that is connected to a SCSI channel.
@param[in] This Protocol instance pointer.
@param[in] Target The Target ID of the SCSI device to reset.
@param[in] Lun The LUN of the SCSI device to reset.
@retval EFI_UNSUPPORTED It is not supported.
**/
EFI_STATUS
EFIAPI
IScsiExtScsiPassThruResetTargetLun (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN UINT8 *Target,
IN UINT64 Lun
);
/**
Retrieve the list of legal Target IDs for SCSI devices on a SCSI channel.
@param[in] This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL
instance.
@param[in, out] Target (TARGET_MAX_BYTES) of a SCSI device present on
the SCSI channel. On output, a pointer to the
Target ID (an array of TARGET_MAX_BYTES) of the
next SCSI device present on a SCSI channel.
An input value of 0xF(all bytes in the array are 0xF)
in the Target array retrieves the Target ID of the
first SCSI device present on a SCSI channel.
@retval EFI_SUCCESS The Target ID of the next SCSI device on the SCSI
channel was returned in Target.
@retval EFI_INVALID_PARAMETER Target or Lun is NULL.
@retval EFI_TIMEOUT Target array is not all 0xF, and Target was not
returned on a previous call to GetNextTarget().
@retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI channel.
**/
EFI_STATUS
EFIAPI
IScsiExtScsiPassThruGetNextTarget (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN OUT UINT8 **Target
);
#endif