ScsiPassThru.h revision 4fd606d1f5abe38e1f42c38de1d2e895166bd0f4
/** @file
SCSI Pass Through protocol as defined in EFI 1.1.
This protocol allows information about a SCSI channel to be collected,
and allows SCSI Request Packets to be sent to any SCSI devices on a SCSI
channel even if those devices are not boot devices. This protocol is attached
to the device handle of each SCSI channel in a system that the protocol
supports, and can be used for diagnostics. It may also be used to build
a Block I/O driver for SCSI hard drives and SCSI CD-ROM or DVD drives to
allow those devices to become boot devices.
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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
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 __SCSI_PASS_THROUGH_H__
#define __SCSI_PASS_THROUGH_H__
#define EFI_SCSI_PASS_THRU_PROTOCOL_GUID \
{ \
0xa59e8fcf, 0xbda0, 0x43bb, {0x90, 0xb1, 0xd3, 0x73, 0x2e, 0xca, 0xa8, 0x77 } \
}
///
/// Forward reference for pure ANSI compatability
///
typedef struct _EFI_SCSI_PASS_THRU_PROTOCOL EFI_SCSI_PASS_THRU_PROTOCOL;
#define EFI_SCSI_PASS_THRU_ATTRIBUTES_PHYSICAL 0x0001
#define EFI_SCSI_PASS_THRU_ATTRIBUTES_LOGICAL 0x0002
#define EFI_SCSI_PASS_THRU_ATTRIBUTES_NONBLOCKIO 0x0004
//
// SCSI Host Adapter Status definition
//
#define EFI_SCSI_STATUS_HOST_ADAPTER_OK 0x00
#define EFI_SCSI_STATUS_HOST_ADAPTER_TIMEOUT 0x0b // timeout when waiting for the command processing
#define EFI_SCSI_STATUS_HOST_ADAPTER_MESSAGE_REJECT 0x0d // a message reject was received when processing command
#define EFI_SCSI_STATUS_HOST_ADAPTER_PARITY_ERROR 0x0f
#define EFI_SCSI_STATUS_HOST_ADAPTER_REQUEST_SENSE_FAILED 0x10 // the adapter failed in issuing request sense command
#define EFI_SCSI_STATUS_HOST_ADAPTER_OTHER 0x7f
//
// SCSI Target Status definition
//
#define EFI_SCSI_STATUS_TARGET_GOOD 0x00
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.
///
///
/// A pointer to the data buffer to transfer between the SCSI
/// controller and the SCSI device. Must be aligned to the boundary
/// specified in the IoAlign field of the
/// EFI_SCSI_PASS_THRU_MODE structure.
///
///
/// A pointer to the sense data that was generated by the execution of
/// the SCSI Request Packet.
///
///
/// A pointer to buffer that contains the Command Data Block to
/// send to the SCSI device.
///
///
/// On Input, the size, in bytes, of InDataBuffer. On output, the
/// number of bytes transferred between the SCSI controller and the SCSI device.
///
///
/// 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.
///
///
/// The direction of the data transfer. 0 for reads, 1 for writes. A
/// value of 2 is Reserved for Bi-Directional SCSI commands.
///
///
/// The status of the SCSI Host Controller that produces the SCSI
/// bus where the SCSI device attached when the SCSI Request
/// Packet was executed on the SCSI Controller.
///
///
/// The status returned by the SCSI device when the SCSI Request
/// Packet was executed.
///
///
/// On input, the length in bytes of the SenseData buffer. On
/// output, the number of bytes written to the SenseData buffer.
///
typedef struct {
///
/// A Null-terminated Unicode string that represents the printable name of the SCSI controller.
///
///
/// A Null-terminated Unicode string that represents the printable name of the SCSI channel.
///
///
/// The Target ID of the host adapter on the SCSI channel.
///
///
/// Additional information on the attributes of the SCSI channel.
///
///
/// Supplies the alignment requirement for any buffer used in a data transfer.
///
/**
Sends a SCSI Request Packet to a SCSI device that is attached to
the SCSI channel. This function supports both blocking I/O and
non-blocking I/O. The blocking I/O functionality is required,
and the non-blocking I/O functionality is optional.
@param This Protocol instance pointer.
@param Target The Target ID of the SCSI device to
send the SCSI Request Packet.
@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 non-blocking 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 non-blocking 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, and
DataBuffer. See HostAdapterStatus, TargetStatus,
SenseDataLength, and SenseData in that order
for additional status information.
@retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was executed, but the
entire DataBuffer could not be transferred.
The actual number of bytes transferred is returned
in TransferLength. See HostAdapterStatus,
TargetStatus, SenseDataLength, and SenseData in
that order for additional status information.
@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. See HostAdapterStatus,
TargetStatus, SenseDataLength, and SenseData in
that order for additional status information.
@retval EFI_INVALID_PARAMETER Target, Lun, or the contents of ScsiRequestPacket
are invalid. The SCSI Request Packet was not sent,
so no additional status information is available.
@retval EFI_UNSUPPORTED The command described by the SCSI Request Packet
is not supported by the host adapter. 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. See HostAdapterStatus,
TargetStatus, SenseDataLength, and SenseData in
that order for additional status information.
**/
typedef
);
/**
Used to retrieve the list of legal Target IDs for SCSI devices
on a SCSI channel.
@param This Protocol instance pointer.
@param 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 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 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().
**/
typedef
);
/**
Used to allocate and build a device path node for a SCSI device
on a SCSI channel.
@param This Protocol instance pointer.
@param Target The Target ID of the SCSI device for which
a device path node is to be allocated and built.
@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_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.
**/
typedef
);
/**
Used to translate a device path node to a Target ID and LUN.
@param This Protocol instance pointer.
@param DevicePath A pointer to the device path node that
describes a SCSI device on the SCSI channel.
@param Target A pointer to the Target 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 is NULL.
@retval EFI_INVALID_PARAMETER Target is NULL.
@retval EFI_INVALID_PARAMETER 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.
**/
typedef
);
/**
Resets a SCSI channel.This operation resets all the
SCSI devices connected to the SCSI channel.
@param This Protocol instance pointer.
@retval EFI_SUCCESS The SCSI channel was reset.
@retval EFI_UNSUPPORTED The SCSI channel does not support
a channel reset operation.
@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.
**/
typedef
);
/**
Resets a SCSI device that is connected to a SCSI channel.
@param This Protocol instance pointer.
@param Target The Target ID of the SCSI device to reset.
@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_UNSUPPORTED The SCSI channel does not support a target
reset operation.
@retval EFI_INVALID_PARAMETER Target or Lun are invalid.
@retval EFI_DEVICE_ERROR A device error occurred while attempting
to reset the SCSI device specified by Target
and Lun.
@retval EFI_TIMEOUT A timeout occurred while attempting to reset
the SCSI device specified by Target and Lun.
**/
typedef
);
///
/// The EFI_SCSI_PASS_THRU_PROTOCOL provides information about a SCSI channel and
/// the ability to send SCSI 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, the attributes of
/// the SCSI channel, the printable name for the SCSI controller, and the printable name of the
/// SCSI channel.
///
struct _EFI_SCSI_PASS_THRU_PROTOCOL {
///
/// A pointer to the EFI_SCSI_PASS_THRU_MODE data for this SCSI channel.
///
};
extern EFI_GUID gEfiScsiPassThruProtocolGuid;
#endif