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/*-
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/isci/scil/sati_read_buffer.c 231689 2012-02-14 15:58:49Z jimharris $");
/**
* @file
* @brief This file contains the implementation to translate
* SCSI Read Buffer command based on the SAT spec.
*/
#if !defined(DISABLE_SATI_READ_BUFFER)
#include <dev/isci/scil/sati_read_buffer.h>
#include <dev/isci/scil/sati_callbacks.h>
#include <dev/isci/scil/sati_util.h>
/**
* @brief This method will translate the SCSI Read Buffer command
* into a corresponding ATA Read Buffer command.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @return Indicates if the command translation succeeded.
* @retval SATI_SUCCESS indicates that the translation was supported and occurred
* without error.
* @retval SATI_FAILURE_CHECK_RESPONSE_DATA This value is returned if
* there is a translation failure.
* @retval SATI_COMPLETE indicates that the translation was supported, occurred without
* error, and no additional translation is necessary.
*/
SATI_STATUS sati_read_buffer_translate_command(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
void * ata_io
)
{
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
SATI_STATUS status = SATI_FAILURE;
U32 allocation_length;
U32 buffer_offset;
allocation_length = ((sati_get_cdb_byte(cdb, 6) << 16) |
(sati_get_cdb_byte(cdb, 7) << 8) |
(sati_get_cdb_byte(cdb, 8)));
buffer_offset = ((sati_get_cdb_byte(cdb, 3) << 16) |
(sati_get_cdb_byte(cdb, 4) << 8) |
(sati_get_cdb_byte(cdb, 5)));
sequence->allocation_length = allocation_length;
switch(sati_get_cdb_byte(cdb, 1))
{
case SATI_READ_BUFFER_MODE_DATA:
if((allocation_length == 512) && (buffer_offset == 0) &&
(sati_get_cdb_byte(cdb, 2) == 0))
{
sati_ata_read_buffer_construct(ata_io, sequence);
sequence->type = SATI_SEQUENCE_READ_BUFFER;
sequence->state = SATI_SEQUENCE_STATE_AWAIT_RESPONSE;
status = SATI_SUCCESS;
}
else
{
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_CHECK_CONDITION,
SCSI_SENSE_ILLEGAL_REQUEST,
SCSI_ASC_INVALID_FIELD_IN_CDB,
SCSI_ASCQ_INVALID_FIELD_IN_CDB
);
sequence->state = SATI_SEQUENCE_STATE_FINAL;
status = SATI_FAILURE_CHECK_RESPONSE_DATA;
}
break;
case SATI_READ_BUFFER_MODE_DESCRIPTOR:
//allocation legnth must be at least four to return translated data
if(allocation_length < 4)
{
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_CHECK_CONDITION,
SCSI_SENSE_ILLEGAL_REQUEST,
SCSI_ASC_INVALID_FIELD_IN_CDB,
SCSI_ASCQ_INVALID_FIELD_IN_CDB
);
sequence->state = SATI_SEQUENCE_STATE_FINAL;
status = SATI_FAILURE_CHECK_RESPONSE_DATA;
}
else
{
//figure out if we support other buffer id's
sati_set_data_byte(sequence, scsi_io, 0, 0x09); //offset boundary
sati_set_data_byte(sequence, scsi_io, 1, 0x00);
sati_set_data_byte(sequence, scsi_io, 2, 0x02); //buffer capacity 0x200
sati_set_data_byte(sequence, scsi_io, 3, 0x00);
sequence->state = SATI_SEQUENCE_STATE_FINAL;
status = SATI_COMPLETE;
}
break;
default:
//Unspecified sat2v7, returning invalid cdb
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_CHECK_CONDITION,
SCSI_SENSE_ILLEGAL_REQUEST,
SCSI_ASC_INVALID_FIELD_IN_CDB,
SCSI_ASCQ_INVALID_FIELD_IN_CDB
);
sequence->state = SATI_SEQUENCE_STATE_FINAL;
status = SATI_FAILURE_CHECK_RESPONSE_DATA;
}
return status;
}
/**
* @brief This method will complete the Read Buffer Translation by copying the
ATA response data into the SCSI request DATA buffer.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @return Indicates if the command translation succeeded.
* @retval SATI_FAILURE_CHECK_RESPONSE_DATA This value is returned if
* there is a translation failure.
* @retval SATI_COMPLETE indicates that the translation was supported, occurred without
* error, and no additional translation is necessary.
*/
SATI_STATUS sati_read_buffer_translate_response(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
void * ata_io
)
{
U8 * register_fis = sati_cb_get_d2h_register_fis_address(ata_io);
U8 ata_status = (U8) sati_get_ata_status(register_fis);
SATI_STATUS status = SATI_COMPLETE;
if (ata_status & ATA_STATUS_REG_ERROR_BIT)
{
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_CHECK_CONDITION,
SCSI_SENSE_ABORTED_COMMAND,
SCSI_ASC_NO_ADDITIONAL_SENSE,
SCSI_ASCQ_NO_ADDITIONAL_SENSE
);
status = SATI_FAILURE_CHECK_RESPONSE_DATA;
}
else
{
void * ata_data = sati_cb_get_ata_data_address(ata_io);
if(ata_data == NULL)
{
status = SATI_FAILURE;
}
else
{
//copy ATA data into SCSI data buffer
sati_copy_data(
sequence,
scsi_io,
0,
ata_data,
512
);
}
}
sequence->state = SATI_SEQUENCE_STATE_FINAL;
return status;
}
#endif //!defined(DISABLE_SATI_READ_BUFFER)