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| Current File : //sys/dev/isci/scil/sati_atapi.c |
/*-
* 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_atapi.c 231689 2012-02-14 15:58:49Z jimharris $");
/**
* @file
* @brief This file contains all of the method implementations that
* can be utilized by a user to perform SCSI-to-ATA Translation.
* SATI adheres to the www.t10.org SAT specification.
*
* For situations where compliance is not observed, the SATI will
* return an error indication (most likely INVALID FIELD IN CDB sense data).
*/
#include <dev/isci/scil/sati.h>
#include <dev/isci/scil/sati_util.h>
#include <dev/isci/scil/sati_atapi.h>
#include <dev/isci/scil/sati_callbacks.h>
#include <dev/isci/scil/intel_ata.h>
#include <dev/isci/scil/intel_scsi.h>
#include <dev/isci/scil/intel_sat.h>
#include <dev/isci/scil/sati_report_luns.h>
//******************************************************************************
//* P U B L I C M E T H O D S
//******************************************************************************
SATI_STATUS sati_atapi_translate_command(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
SATI_DEVICE_T * sati_device,
void * scsi_io,
void * atapi_io
)
{
SATI_STATUS status;
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
SATA_FIS_REG_H2D_T * register_fis =
(SATA_FIS_REG_H2D_T *)sati_cb_get_h2d_register_fis_address(atapi_io);
U8 io_direction = SATI_DATA_DIRECTION_IN;
//No sense response has been set for the translation sequence yet
sequence->is_sense_response_set = FALSE;
// Default to no translation response required
sequence->is_translate_response_required = FALSE;
sequence->number_data_bytes_set = 0;
sequence->device = sati_device;
sequence->command_specific_data.scratch = 0;
sati_cb_get_data_direction(scsi_io, &io_direction);
//set sat protocol.
if (io_direction == SATI_DATA_DIRECTION_NONE)
sequence->protocol = SAT_PROTOCOL_PACKET_NON_DATA;
else if (io_direction == SATI_DATA_DIRECTION_IN)
sequence->protocol = SAT_PROTOCOL_PACKET_DMA_DATA_IN;
else if (io_direction == SATI_DATA_DIRECTION_OUT)
sequence->protocol = SAT_PROTOCOL_PACKET_DMA_DATA_OUT;
// We don't send Report Luns command out.
if (sati_get_cdb_byte(cdb, 0) == SCSI_REPORT_LUNS)
{
status = sati_report_luns_translate_command(
sequence, scsi_io, atapi_io
);
}
else if (sati_cb_get_lun(scsi_io) != 0)
{
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_CHECK_CONDITION,
SCSI_SENSE_ILLEGAL_REQUEST,
SCSI_ASC_LOGICAL_UNIT_NOT_SUPPORTED,
0
);
status = SATI_FAILURE_CHECK_RESPONSE_DATA;
}
else
{
if (sequence->state == SATI_SEQUENCE_STATE_INCOMPLETE)
{ //Request Sense command is required.
U8 request_sense_cdb[SATI_ATAPI_REQUEST_SENSE_CDB_LENGTH] =
{0x3, 0x0, 0x0, 0x0, 0x12, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0};
//set the sequence->protocol to DATA_IN anyway;
sequence->protocol = SAT_PROTOCOL_PACKET_DMA_DATA_IN;
//set the cdb for Request Sense using command_specific_data field.
memcpy(sequence->command_specific_data.sati_atapi_data.request_sense_cdb,
request_sense_cdb,
SATI_ATAPI_REQUEST_SENSE_CDB_LENGTH
);
}
//build Packet Fis for any other command translation.
register_fis->command = ATA_PACKET;
register_fis->features |= ATA_PACKET_FEATURE_DMA;
register_fis->fis_type = SATA_FIS_TYPE_REGH2D;
register_fis->command_flag = 1;
status = SATI_SUCCESS;
}
return status;
}
SATI_STATUS sati_atapi_translate_command_response(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
void * atapi_io
)
{
SATI_STATUS status = SATI_COMPLETE;
U8 * register_fis = sati_cb_get_d2h_register_fis_address(atapi_io);
U8 ata_status;
/**
* If the device fault bit is set in the status register, then
* set the sense data and return.
*/
ata_status = (U8) sati_get_ata_status(register_fis);
if (ata_status & ATA_STATUS_REG_DEVICE_FAULT_BIT)
{
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_CHECK_CONDITION,
SCSI_SENSE_HARDWARE_ERROR,
SCSI_ASC_INTERNAL_TARGET_FAILURE,
SCSI_ASCQ_INTERNAL_TARGET_FAILURE
);
sequence->device->state = SATI_DEVICE_STATE_DEVICE_FAULT_OCCURRED;
return SATI_FAILURE_CHECK_RESPONSE_DATA;
}
else if (ata_status & ATA_STATUS_REG_ERROR_BIT)
{
//reset the register_fis.
memset(register_fis, 0, sizeof(SATA_FIS_REG_D2H_T));
//Internal Request Sense command is needed.
sequence->state = SATI_SEQUENCE_STATE_INCOMPLETE;
return SATI_SEQUENCE_INCOMPLETE;
}
return status;
}
void sati_atapi_translate_request_sense_response(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
void * atapi_io
)
{
//sense data is already in place.
SCI_SSP_RESPONSE_IU_T * rsp_iu = (SCI_SSP_RESPONSE_IU_T*)
sati_cb_get_response_iu_address(scsi_io);
sati_scsi_common_response_iu_construct(
rsp_iu,
SCSI_STATUS_CHECK_CONDITION,
sati_scsi_get_sense_data_length(sequence, scsi_io),
SCSI_RESPONSE_DATA_PRES_SENSE_DATA
);
sequence->is_sense_response_set = TRUE;
sequence->state = SATI_SEQUENCE_STATE_FINAL;
}
U32 sati_atapi_translate_number_of_bytes_transferred(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
void * atapi_io
)
{
U8* cdb = sati_cb_get_cdb_address(scsi_io);
U8 response_data;
U32 data_length = 0;
switch(cdb[0])
{
case SCSI_MODE_SENSE_10:
sati_cb_get_data_byte(scsi_io, 1, &response_data);
data_length = response_data+2;
break;
case 0x51: //READ DISC INFORMATION
sati_cb_get_data_byte(scsi_io, 1, &response_data);
data_length = response_data+2;
break;
default:
break;
}
return data_length;
}