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378 lines
17 KiB
C
378 lines
17 KiB
C
/** @file
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SCSI Pass Through protocol as defined in EFI 1.1.
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This protocol allows information about a SCSI channel to be collected,
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and allows SCSI Request Packets to be sent to any SCSI devices on a SCSI
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channel even if those devices are not boot devices. This protocol is attached
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to the device handle of each SCSI channel in a system that the protocol
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supports, and can be used for diagnostics. It may also be used to build
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a Block I/O driver for SCSI hard drives and SCSI CD-ROM or DVD drives to
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allow those devices to become boot devices.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __SCSI_PASS_THROUGH_H__
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#define __SCSI_PASS_THROUGH_H__
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#define EFI_SCSI_PASS_THRU_PROTOCOL_GUID \
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{ \
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0xa59e8fcf, 0xbda0, 0x43bb, {0x90, 0xb1, 0xd3, 0x73, 0x2e, 0xca, 0xa8, 0x77 } \
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}
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///
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/// Forward reference for pure ANSI compatability
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///
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typedef struct _EFI_SCSI_PASS_THRU_PROTOCOL EFI_SCSI_PASS_THRU_PROTOCOL;
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#define EFI_SCSI_PASS_THRU_ATTRIBUTES_PHYSICAL 0x0001
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#define EFI_SCSI_PASS_THRU_ATTRIBUTES_LOGICAL 0x0002
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#define EFI_SCSI_PASS_THRU_ATTRIBUTES_NONBLOCKIO 0x0004
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//
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// SCSI Host Adapter Status definition
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//
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#define EFI_SCSI_STATUS_HOST_ADAPTER_OK 0x00
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#define EFI_SCSI_STATUS_HOST_ADAPTER_TIMEOUT_COMMAND 0x09 // timeout when processing the command
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#define EFI_SCSI_STATUS_HOST_ADAPTER_TIMEOUT 0x0b // timeout when waiting for the command processing
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#define EFI_SCSI_STATUS_HOST_ADAPTER_MESSAGE_REJECT 0x0d // a message reject was received when processing command
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#define EFI_SCSI_STATUS_HOST_ADAPTER_BUS_RESET 0x0e // a bus reset was detected
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#define EFI_SCSI_STATUS_HOST_ADAPTER_PARITY_ERROR 0x0f
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#define EFI_SCSI_STATUS_HOST_ADAPTER_REQUEST_SENSE_FAILED 0x10 // the adapter failed in issuing request sense command
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#define EFI_SCSI_STATUS_HOST_ADAPTER_SELECTION_TIMEOUT 0x11 // selection timeout
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#define EFI_SCSI_STATUS_HOST_ADAPTER_DATA_OVERRUN_UNDERRUN 0x12 // data overrun or data underrun
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#define EFI_SCSI_STATUS_HOST_ADAPTER_BUS_FREE 0x13 // Unexepected bus free
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#define EFI_SCSI_STATUS_HOST_ADAPTER_PHASE_ERROR 0x14 // Target bus phase sequence failure
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#define EFI_SCSI_STATUS_HOST_ADAPTER_OTHER 0x7f
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//
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// SCSI Target Status definition
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//
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#define EFI_SCSI_STATUS_TARGET_GOOD 0x00
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#define EFI_SCSI_STATUS_TARGET_CHECK_CONDITION 0x02 // check condition
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#define EFI_SCSI_STATUS_TARGET_CONDITION_MET 0x04 // condition met
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#define EFI_SCSI_STATUS_TARGET_BUSY 0x08 // busy
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#define EFI_SCSI_STATUS_TARGET_INTERMEDIATE 0x10 // intermediate
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#define EFI_SCSI_STATUS_TARGET_INTERMEDIATE_CONDITION_MET 0x14 // intermediate-condition met
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#define EFI_SCSI_STATUS_TARGET_RESERVATION_CONFLICT 0x18 // reservation conflict
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#define EFI_SCSI_STATUS_TARGET_COMMOND_TERMINATED 0x22 // command terminated
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#define EFI_SCSI_STATUS_TARGET_QUEUE_FULL 0x28 // queue full
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typedef struct {
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///
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/// The timeout, in 100 ns units, to use for the execution of this SCSI
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/// Request Packet. A Timeout value of 0 means that this function
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/// will wait indefinitely for the SCSI Request Packet to execute. If
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/// Timeout is greater than zero, then this function will return
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/// EFI_TIMEOUT if the time required to execute the SCSI Request
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/// Packet is greater than Timeout.
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///
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UINT64 Timeout;
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///
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/// A pointer to the data buffer to transfer between the SCSI
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/// controller and the SCSI device. Must be aligned to the boundary
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/// specified in the IoAlign field of the
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/// EFI_SCSI_PASS_THRU_MODE structure.
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///
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VOID *DataBuffer;
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///
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/// A pointer to the sense data that was generated by the execution of
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/// the SCSI Request Packet.
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///
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VOID *SenseData;
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///
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/// A pointer to buffer that contains the Command Data Block to
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/// send to the SCSI device.
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///
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VOID *Cdb;
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///
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/// On Input, the size, in bytes, of InDataBuffer. On output, the
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/// number of bytes transferred between the SCSI controller and the SCSI device.
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///
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UINT32 TransferLength;
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///
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/// The length, in bytes, of the buffer Cdb. The standard values are
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/// 6, 10, 12, and 16, but other values are possible if a variable length CDB is used.
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///
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UINT8 CdbLength;
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///
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/// The direction of the data transfer. 0 for reads, 1 for writes. A
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/// value of 2 is Reserved for Bi-Directional SCSI commands.
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///
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UINT8 DataDirection;
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///
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/// The status of the SCSI Host Controller that produces the SCSI
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/// bus where the SCSI device attached when the SCSI Request
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/// Packet was executed on the SCSI Controller.
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///
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UINT8 HostAdapterStatus;
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///
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/// The status returned by the SCSI device when the SCSI Request
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/// Packet was executed.
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///
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UINT8 TargetStatus;
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///
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/// On input, the length in bytes of the SenseData buffer. On
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/// output, the number of bytes written to the SenseData buffer.
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///
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UINT8 SenseDataLength;
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} EFI_SCSI_PASS_THRU_SCSI_REQUEST_PACKET;
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typedef struct {
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///
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/// A Null-terminated Unicode string that represents the printable name of the SCSI controller.
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///
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CHAR16 *ControllerName;
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///
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/// A Null-terminated Unicode string that represents the printable name of the SCSI channel.
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///
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CHAR16 *ChannelName;
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///
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/// The Target ID of the host adapter on the SCSI channel.
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///
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UINT32 AdapterId;
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///
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/// Additional information on the attributes of the SCSI channel.
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///
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UINT32 Attributes;
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///
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/// Supplies the alignment requirement for any buffer used in a data transfer.
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///
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UINT32 IoAlign;
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} EFI_SCSI_PASS_THRU_MODE;
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/**
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Sends a SCSI Request Packet to a SCSI device that is attached to
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the SCSI channel. This function supports both blocking I/O and
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non-blocking I/O. The blocking I/O functionality is required,
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and the non-blocking I/O functionality is optional.
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@param This Protocol instance pointer.
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@param Target The Target ID of the SCSI device to
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send the SCSI Request Packet.
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@param Lun The LUN of the SCSI device to send the
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SCSI Request Packet.
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@param Packet A pointer to the SCSI Request Packet to send
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to the SCSI device specified by Target and Lun.
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@param Event If non-blocking I/O is not supported then Event
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is ignored, and blocking I/O is performed.
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If Event is NULL, then blocking I/O is performed.
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If Event is not NULL and non blocking I/O is
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supported, then non-blocking I/O is performed,
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and Event will be signaled when the SCSI Request
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Packet completes
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@retval EFI_SUCCESS The SCSI Request Packet was sent by the host, and
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TransferLength bytes were transferred to/from
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DataBuffer. See HostAdapterStatus, TargetStatus,
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SenseDataLength, and SenseData in that order
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for additional status information.
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@retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was executed, but the
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entire DataBuffer could not be transferred.
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The actual number of bytes transferred is returned
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in TransferLength. See HostAdapterStatus,
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TargetStatus, SenseDataLength, and SenseData in
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that order for additional status information.
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@retval EFI_NOT_READY The SCSI Request Packet could not be sent because
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there are too many SCSI Request Packets already
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queued. The caller may retry again later.
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@retval EFI_DEVICE_ERROR A device error occurred while attempting to send
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the SCSI Request Packet. See HostAdapterStatus,
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TargetStatus, SenseDataLength, and SenseData in
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that order for additional status information.
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@retval EFI_INVALID_PARAMETER Target, Lun, or the contents of ScsiRequestPacket
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are invalid. The SCSI Request Packet was not sent,
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so no additional status information is available.
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@retval EFI_UNSUPPORTED The command described by the SCSI Request Packet
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is not supported by the host adapter. The SCSI
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Request Packet was not sent, so no additional
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status information is available.
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@retval EFI_TIMEOUT A timeout occurred while waiting for the SCSI
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Request Packet to execute. See HostAdapterStatus,
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TargetStatus, SenseDataLength, and SenseData in
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that order for additional status information.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SCSI_PASS_THRU_PASSTHRU)(
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IN EFI_SCSI_PASS_THRU_PROTOCOL *This,
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IN UINT32 Target,
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IN UINT64 Lun,
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IN OUT EFI_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet,
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IN EFI_EVENT Event OPTIONAL
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);
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/**
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Used to retrieve the list of legal Target IDs for SCSI devices
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on a SCSI channel.
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@param This Protocol instance pointer.
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@param Target On input, a pointer to the Target ID of a
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SCSI device present on the SCSI channel.
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On output, a pointer to the Target ID of
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the next SCSI device present on a SCSI channel.
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An input value of 0xFFFFFFFF retrieves the
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Target ID of the first SCSI device present on
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a SCSI channel.
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@param Lun On input, a pointer to the LUN of a SCSI device
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present on the SCSI channel. On output, a pointer
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to the LUN of the next SCSI device present on a
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SCSI channel.
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@retval EFI_SUCCESS The Target ID of the next SCSI device on the SCSI
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channel was returned in Target and Lun.
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@retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI channel.
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@retval EFI_INVALID_PARAMETER Target is not 0xFFFFFFFF, and Target and Lun were
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not returned on a previous call to GetNextDevice().
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SCSI_PASS_THRU_GET_NEXT_DEVICE)(
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IN EFI_SCSI_PASS_THRU_PROTOCOL *This,
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IN OUT UINT32 *Target,
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IN OUT UINT64 *Lun
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);
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/**
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Used to allocate and build a device path node for a SCSI device
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on a SCSI channel.
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@param This Protocol instance pointer.
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@param Target The Target ID of the SCSI device for which
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a device path node is to be allocated and built.
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@param Lun The LUN of the SCSI device for which a device
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path node is to be allocated and built.
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@param DevicePath A pointer to a single device path node that
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describes the SCSI device specified by
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Target and Lun. This function is responsible
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for allocating the buffer DevicePath with the boot
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service AllocatePool(). It is the caller's
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responsibility to free DevicePath when the caller
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is finished with DevicePath.
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@retval EFI_SUCCESS The device path node that describes the SCSI device
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specified by Target and Lun was allocated and
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returned in DevicePath.
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@retval EFI_NOT_FOUND The SCSI devices specified by Target and Lun does
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not exist on the SCSI channel.
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@retval EFI_INVALID_PARAMETER DevicePath is NULL.
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@retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate
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DevicePath.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SCSI_PASS_THRU_BUILD_DEVICE_PATH)(
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IN EFI_SCSI_PASS_THRU_PROTOCOL *This,
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IN UINT32 Target,
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IN UINT64 Lun,
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IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
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);
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/**
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Used to translate a device path node to a Target ID and LUN.
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@param This Protocol instance pointer.
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@param DevicePath A pointer to the device path node that
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describes a SCSI device on the SCSI channel.
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@param Target A pointer to the Target ID of a SCSI device
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on the SCSI channel.
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@param Lun A pointer to the LUN of a SCSI device on
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the SCSI channel.
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@retval EFI_SUCCESS DevicePath was successfully translated to a
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Target ID and LUN, and they were returned
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in Target and Lun.
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@retval EFI_INVALID_PARAMETER DevicePath is NULL.
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@retval EFI_INVALID_PARAMETER Target is NULL.
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@retval EFI_INVALID_PARAMETER Lun is NULL.
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@retval EFI_UNSUPPORTED This driver does not support the device path
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node type in DevicePath.
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@retval EFI_NOT_FOUND A valid translation from DevicePath to a
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Target ID and LUN does not exist.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SCSI_PASS_THRU_GET_TARGET_LUN)(
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IN EFI_SCSI_PASS_THRU_PROTOCOL *This,
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IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
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OUT UINT32 *Target,
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OUT UINT64 *Lun
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);
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/**
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Resets a SCSI channel.This operation resets all the
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SCSI devices connected to the SCSI channel.
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@param This Protocol instance pointer.
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@retval EFI_SUCCESS The SCSI channel was reset.
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@retval EFI_UNSUPPORTED The SCSI channel does not support
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a channel reset operation.
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@retval EFI_DEVICE_ERROR A device error occurred while
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attempting to reset the SCSI channel.
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@retval EFI_TIMEOUT A timeout occurred while attempting
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to reset the SCSI channel.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SCSI_PASS_THRU_RESET_CHANNEL)(
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IN EFI_SCSI_PASS_THRU_PROTOCOL *This
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);
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/**
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Resets a SCSI device that is connected to a SCSI channel.
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@param This Protocol instance pointer.
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@param Target The Target ID of the SCSI device to reset.
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@param Lun The LUN of the SCSI device to reset.
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@retval EFI_SUCCESS The SCSI device specified by Target and
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Lun was reset.
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@retval EFI_UNSUPPORTED The SCSI channel does not support a target
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reset operation.
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@retval EFI_INVALID_PARAMETER Target or Lun are invalid.
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@retval EFI_DEVICE_ERROR A device error occurred while attempting
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to reset the SCSI device specified by Target
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and Lun.
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@retval EFI_TIMEOUT A timeout occurred while attempting to reset
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the SCSI device specified by Target and Lun.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SCSI_PASS_THRU_RESET_TARGET)(
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IN EFI_SCSI_PASS_THRU_PROTOCOL *This,
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IN UINT32 Target,
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IN UINT64 Lun
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);
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///
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/// The EFI_SCSI_PASS_THRU_PROTOCOL provides information about a SCSI channel and
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/// the ability to send SCSI Request Packets to any SCSI device attached to that SCSI channel. The
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/// information includes the Target ID of the host controller on the SCSI channel, the attributes of
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/// the SCSI channel, the printable name for the SCSI controller, and the printable name of the
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/// SCSI channel.
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///
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struct _EFI_SCSI_PASS_THRU_PROTOCOL {
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///
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/// A pointer to the EFI_SCSI_PASS_THRU_MODE data for this SCSI channel.
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///
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EFI_SCSI_PASS_THRU_MODE *Mode;
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EFI_SCSI_PASS_THRU_PASSTHRU PassThru;
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EFI_SCSI_PASS_THRU_GET_NEXT_DEVICE GetNextDevice;
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EFI_SCSI_PASS_THRU_BUILD_DEVICE_PATH BuildDevicePath;
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EFI_SCSI_PASS_THRU_GET_TARGET_LUN GetTargetLun;
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EFI_SCSI_PASS_THRU_RESET_CHANNEL ResetChannel;
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EFI_SCSI_PASS_THRU_RESET_TARGET ResetTarget;
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};
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extern EFI_GUID gEfiScsiPassThruProtocolGuid;
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#endif
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