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/** @file
EFI_EXT_SCSI_PASS_THRU_PROTOCOL as defined in UEFI 2.0.
This protocol provides services that allow SCSI Pass Thru commands
to be sent to SCSI devices attached to a SCSI channel.
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 __EXT_SCSI_PASS_THROUGH_PROTOCOL_H__
#define __EXT_SCSI_PASS_THROUGH_PROTOCOL_H__
#define EFI_EXT_SCSI_PASS_THRU_PROTOCOL_GUID \
{ \
0x143b7632, 0xb81b, 0x4cb7, {0xab, 0xd3, 0xb6, 0x25, 0xa5, 0xb9, 0xbf, 0xfe } \
}
typedef struct _EFI_EXT_SCSI_PASS_THRU_PROTOCOL EFI_EXT_SCSI_PASS_THRU_PROTOCOL;
#define TARGET_MAX_BYTES 0x10
#define EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_PHYSICAL 0x0001
#define EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_LOGICAL 0x0002
#define EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_NONBLOCKIO 0x0004
//
// DataDirection
//
#define EFI_EXT_SCSI_DATA_DIRECTION_READ 0
#define EFI_EXT_SCSI_DATA_DIRECTION_WRITE 1
#define EFI_EXT_SCSI_DATA_DIRECTION_BIDIRECTIONAL 2
//
// HostAdapterStatus
//
#define EFI_EXT_SCSI_STATUS_HOST_ADAPTER_OK 0x00
#define EFI_EXT_SCSI_STATUS_HOST_ADAPTER_TIMEOUT_COMMAND 0x09
#define EFI_EXT_SCSI_STATUS_HOST_ADAPTER_TIMEOUT 0x0b
#define EFI_EXT_SCSI_STATUS_HOST_ADAPTER_MESSAGE_REJECT 0x0d
#define EFI_EXT_SCSI_STATUS_HOST_ADAPTER_BUS_RESET 0x0e
#define EFI_EXT_SCSI_STATUS_HOST_ADAPTER_PARITY_ERROR 0x0f
#define EFI_EXT_SCSI_STATUS_HOST_ADAPTER_REQUEST_SENSE_FAILED 0x10
#define EFI_EXT_SCSI_STATUS_HOST_ADAPTER_SELECTION_TIMEOUT 0x11
#define EFI_EXT_SCSI_STATUS_HOST_ADAPTER_DATA_OVERRUN_UNDERRUN 0x12
#define EFI_EXT_SCSI_STATUS_HOST_ADAPTER_BUS_FREE 0x13
#define EFI_EXT_SCSI_STATUS_HOST_ADAPTER_PHASE_ERROR 0x14
#define EFI_EXT_SCSI_STATUS_HOST_ADAPTER_OTHER 0x7f
//
// TargetStatus
//
#define EFI_EXT_SCSI_STATUS_TARGET_GOOD 0x00
#define EFI_EXT_SCSI_STATUS_TARGET_CHECK_CONDITION 0x02
#define EFI_EXT_SCSI_STATUS_TARGET_CONDITION_MET 0x04
#define EFI_EXT_SCSI_STATUS_TARGET_BUSY 0x08
#define EFI_EXT_SCSI_STATUS_TARGET_INTERMEDIATE 0x10
#define EFI_EXT_SCSI_STATUS_TARGET_INTERMEDIATE_CONDITION_MET 0x14
#define EFI_EXT_SCSI_STATUS_TARGET_RESERVATION_CONFLICT 0x18
#define EFI_EXT_SCSI_STATUS_TARGET_TASK_SET_FULL 0x28
#define EFI_EXT_SCSI_STATUS_TARGET_ACA_ACTIVE 0x30
#define EFI_EXT_SCSI_STATUS_TARGET_TASK_ABORTED 0x40
typedef struct {
///
/// The Target ID of the host adapter on the SCSI channel.
///
UINT32 AdapterId;
///
/// Additional information on the attributes of the SCSI channel.
///
UINT32 Attributes;
///
/// Supplies the alignment requirement for any buffer used in a data transfer.
///
UINT32 IoAlign;
} EFI_EXT_SCSI_PASS_THRU_MODE;
typedef struct {
///
/// The timeout, in 100 ns units, to use for the execution of this SCSI
/// Request Packet. A Timeout value of 0 means that this function
/// will wait indefinitely for the SCSI Request Packet to execute. If
/// Timeout is greater than zero, then this function will return
/// EFI_TIMEOUT if the time required to execute the SCSI
/// Request Packet is greater than Timeout.
///
UINT64 Timeout;
///
/// A pointer to the data buffer to transfer between the SCSI
/// controller and the SCSI device for read and bidirectional commands.
///
VOID *InDataBuffer;
///
/// A pointer to the data buffer to transfer between the SCSI
/// controller and the SCSI device for write or bidirectional commands.
///
VOID *OutDataBuffer;
///
/// A pointer to the sense data that was generated by the execution of
/// the SCSI Request Packet.
///
VOID *SenseData;
///
/// A pointer to buffer that contains the Command Data Block to
/// send to the SCSI device specified by Target and Lun.
///
VOID *Cdb;
///
/// On Input, the size, in bytes, of InDataBuffer. On output, the
/// number of bytes transferred between the SCSI controller and the SCSI device.
///
UINT32 InTransferLength;
///
/// On Input, the size, in bytes of OutDataBuffer. On Output, the
/// Number of bytes transferred between SCSI Controller and the SCSI device.
///
UINT32 OutTransferLength;
///
/// The length, in bytes, of the buffer Cdb. The standard values are 6,
/// 10, 12, and 16, but other values are possible if a variable length CDB is used.
///
UINT8 CdbLength;
///
/// The direction of the data transfer. 0 for reads, 1 for writes. A
/// value of 2 is Reserved for Bi-Directional SCSI commands.
///
UINT8 DataDirection;
///
/// The status of the host adapter specified by This when the SCSI
/// Request Packet was executed on the target device.
///
UINT8 HostAdapterStatus;
///
/// The status returned by the device specified by Target and Lun
/// when the SCSI Request Packet was executed.
///
UINT8 TargetStatus;
///
/// On input, the length in bytes of the SenseData buffer. On
/// output, the number of bytes written to the SenseData buffer.
///
UINT8 SenseDataLength;
} EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET;
/**
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 This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param 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 Lun The LUN of the SCSI device to send the SCSI Request Packet.
@param Packet A pointer to the SCSI Request Packet to send to the SCSI device
specified by Target and Lun.
@param 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 again 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.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_EXT_SCSI_PASS_THRU_PASSTHRU)(
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 This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param Target On input, a pointer to the Target ID (an array of size
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.
@param 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_INVALID_PARAMETER Target array is not all 0xF, and Target and Lun were
not returned on a previous call to GetNextTargetLun().
@retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI channel.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_EXT_SCSI_PASS_THRU_GET_NEXT_TARGET_LUN)(
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN OUT UINT8 **Target,
IN OUT UINT64 *Lun
);
/**
Used to allocate and build a device path node for a SCSI device on a SCSI channel.
@param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param Target The Target is an array of size TARGET_MAX_BYTES and it specifies the
Target ID of the SCSI device for which a device path node is to be
allocated and built. Transport drivers may chose to utilize a subset of
this size to suit the representation of targets. For example, a Fibre
Channel driver may use only 8 bytes (WWN) in the array to represent a
FC target.
@param Lun The LUN of the SCSI device for which a device path node is to be
allocated and built.
@param 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_INVALID_PARAMETER DevicePath is NULL.
@retval EFI_NOT_FOUND The SCSI devices specified by Target and Lun does not exist
on the SCSI channel.
@retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate DevicePath.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_EXT_SCSI_PASS_THRU_BUILD_DEVICE_PATH)(
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN UINT8 *Target,
IN UINT64 Lun,
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
);
/**
Used to translate a device path node to a Target ID and LUN.
@param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param DevicePath A pointer to a single device path node that describes the SCSI device
on the SCSI channel.
@param Target A pointer to the Target Array which represents the ID of a SCSI device
on the SCSI channel.
@param 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 or Target or Lun is NULL.
@retval EFI_NOT_FOUND A valid translation from DevicePath to a Target ID and LUN
does not exist.
@retval EFI_UNSUPPORTED This driver does not support the device path node type in
DevicePath.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_EXT_SCSI_PASS_THRU_GET_TARGET_LUN)(
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 This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@retval EFI_SUCCESS The SCSI channel was reset.
@retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the SCSI channel.
@retval EFI_TIMEOUT A timeout occurred while attempting to reset the SCSI channel.
@retval EFI_UNSUPPORTED The SCSI channel does not support a channel reset operation.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_EXT_SCSI_PASS_THRU_RESET_CHANNEL)(
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This
);
/**
Resets a SCSI logical unit that is connected to a SCSI channel.
@param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param Target The Target is an array of size TARGET_MAX_BYTE and it represents the
target port ID of the SCSI device containing the SCSI logical unit to
reset. Transport drivers may chose to utilize a subset of this array to suit
the representation of their targets.
@param Lun The LUN of the SCSI device to reset.
@retval EFI_SUCCESS The SCSI device specified by Target and Lun was reset.
@retval EFI_INVALID_PARAMETER Target or Lun is NULL.
@retval EFI_TIMEOUT A timeout occurred while attempting to reset the SCSI device
specified by Target and Lun.
@retval EFI_UNSUPPORTED The SCSI channel does not support a target reset operation.
@retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the SCSI device
specified by Target and Lun.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_EXT_SCSI_PASS_THRU_RESET_TARGET_LUN)(
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN UINT8 *Target,
IN UINT64 Lun
);
/**
Used to retrieve the list of legal Target IDs 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
for the SCSI channel. Regardless, the caller of this function must probe the Target ID returned to
see if a SCSI device is actually present at that location on the SCSI channel.
@param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param 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.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_EXT_SCSI_PASS_THRU_GET_NEXT_TARGET)(
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN OUT UINT8 **Target
);
///
/// The EFI_EXT_SCSI_PASS_THRU_PROTOCOL provides information about a SCSI channel
/// and the ability to send SCI Request Packets to any SCSI device attached to
/// that SCSI channel. The information includes the Target ID of the host controller
/// on the SCSI channel and the attributes of the SCSI channel.
///
struct _EFI_EXT_SCSI_PASS_THRU_PROTOCOL {
///
/// A pointer to the EFI_EXT_SCSI_PASS_THRU_MODE data for this SCSI channel.
///
EFI_EXT_SCSI_PASS_THRU_MODE *Mode;
EFI_EXT_SCSI_PASS_THRU_PASSTHRU PassThru;
EFI_EXT_SCSI_PASS_THRU_GET_NEXT_TARGET_LUN GetNextTargetLun;
EFI_EXT_SCSI_PASS_THRU_BUILD_DEVICE_PATH BuildDevicePath;
EFI_EXT_SCSI_PASS_THRU_GET_TARGET_LUN GetTargetLun;
EFI_EXT_SCSI_PASS_THRU_RESET_CHANNEL ResetChannel;
EFI_EXT_SCSI_PASS_THRU_RESET_TARGET_LUN ResetTargetLun;
EFI_EXT_SCSI_PASS_THRU_GET_NEXT_TARGET GetNextTarget;
};
extern EFI_GUID gEfiExtScsiPassThruProtocolGuid;
#endif
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