| Current Path : /sys/amd64/compile/hs32/modules/usr/src/sys/modules/patm/@/dev/isci/scil/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/patm/@/dev/isci/scil/sati_start_stop_unit.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_start_stop_unit.c 231689 2012-02-14 15:58:49Z jimharris $");
/**
* @file
* @brief This file contains the method implementations required to
* translate the SCSI start stop unit command.
*/
#if !defined(DISABLE_SATI_START_STOP_UNIT)
#include <dev/isci/scil/sati_start_stop_unit.h>
#include <dev/isci/scil/sati_util.h>
#include <dev/isci/scil/sati_callbacks.h>
#include <dev/isci/scil/intel_ata.h>
#include <dev/isci/scil/intel_scsi.h>
/**
* @brief This method will translate the start stop unit SCSI command into
* various ATA commands depends on the value in POWER CONTIDTION, LOEJ
* and START fields.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @return Indicate if the command translation succeeded.
* @retval SCI_SUCCESS This is returned if the command translation was
* successful.
* @retval SATI_FAILURE_CHECK_RESPONSE_DATA Please refer to spec.
*
*/
SATI_STATUS sati_start_stop_unit_translate_command(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
void * ata_io
)
{
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
switch ( SATI_START_STOP_UNIT_POWER_CONDITION(cdb) )
{
case SCSI_START_STOP_UNIT_POWER_CONDITION_START_VALID:
if ( SATI_START_STOP_UNIT_START_BIT(cdb) == 0
&& SATI_START_STOP_UNIT_LOEJ_BIT(cdb) == 0 )
{
if ( SATI_START_STOP_UNIT_NO_FLUSH_BIT(cdb) == 1 )
{
//directly send ATA STANDBY_IMMEDIATE
sati_ata_standby_immediate_construct(ata_io, sequence);
sequence->command_specific_data.translated_command = ATA_STANDBY_IMMED;
}
else
{
if ( sequence->state != SATI_SEQUENCE_STATE_INCOMPLETE )
{
//First, send ATA flush command.
sati_ata_flush_cache_construct(ata_io, sequence);
sequence->command_specific_data.translated_command = ATA_FLUSH_CACHE;
//remember there is next step.
sequence->state = SATI_SEQUENCE_STATE_INCOMPLETE;
}
else
{
//the first step, flush cache command, has completed.
//Send standby immediate now.
sati_ata_standby_immediate_construct(ata_io, sequence);
sequence->command_specific_data.translated_command = ATA_STANDBY_IMMED;
}
}
}
else if ( SATI_START_STOP_UNIT_START_BIT(cdb) == 0
&& SATI_START_STOP_UNIT_LOEJ_BIT(cdb) == 1 )
{
//need to know whether the device supports removable medial feature set.
if (sequence->device->capabilities & SATI_DEVICE_CAP_REMOVABLE_MEDIA)
{
//send ATA MEDIA EJECT command.
sati_ata_media_eject_construct(ata_io, sequence);
sequence->command_specific_data.translated_command = ATA_MEDIA_EJECT;
}
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
);
return SATI_FAILURE_CHECK_RESPONSE_DATA;
}
}
else if ( SATI_START_STOP_UNIT_START_BIT(cdb) == 1
&& SATI_START_STOP_UNIT_LOEJ_BIT(cdb) == 0 )
{
//send an ATA verify command
sati_ata_read_verify_sectors_construct(ata_io, sequence);
sequence->command_specific_data.translated_command = ATA_READ_VERIFY_SECTORS;
}
else if ( SATI_START_STOP_UNIT_START_BIT(cdb) == 1
&& SATI_START_STOP_UNIT_LOEJ_BIT(cdb) == 1 )
{
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
);
return SATI_FAILURE_CHECK_RESPONSE_DATA;
}
break;
//Power Condition Field is set to 0x01(Device to transition to Active state)
case SCSI_START_STOP_UNIT_POWER_CONDITION_ACTIVE:
if( sequence->state != SATI_SEQUENCE_STATE_INCOMPLETE )
{
sati_ata_idle_construct(ata_io, sequence);
sequence->state = SATI_SEQUENCE_STATE_INCOMPLETE;
sequence->command_specific_data.translated_command = ATA_IDLE;
}
else
{
sati_ata_read_verify_sectors_construct(ata_io, sequence);
sequence->command_specific_data.translated_command = ATA_READ_VERIFY_SECTORS;
}
break;
//Power Condition Field is set to 0x02(Device to transition to Idle state)
case SCSI_START_STOP_UNIT_POWER_CONDITION_IDLE:
if( SATI_START_STOP_UNIT_NO_FLUSH_BIT(cdb) == 0 &&
sequence->state != SATI_SEQUENCE_STATE_INCOMPLETE )
{
sati_ata_flush_cache_construct(ata_io, sequence);
sequence->command_specific_data.translated_command = ATA_FLUSH_CACHE;
sequence->state = SATI_SEQUENCE_STATE_INCOMPLETE;
}
else
{
if( SATI_START_STOP_UNIT_POWER_CONDITION_MODIFIER(cdb) == 0 )
{
sati_ata_idle_immediate_construct(ata_io, sequence);
}
else
{
sati_ata_idle_immediate_unload_construct(ata_io, sequence);
}
sequence->command_specific_data.translated_command = ATA_IDLE_IMMED;
}
break;
//Power Condition Field is set to 0x03(Device to transition to Standby state)
case SCSI_START_STOP_UNIT_POWER_CONDITION_STANDBY:
if( SATI_START_STOP_UNIT_NO_FLUSH_BIT(cdb) == 0 &&
sequence->state != SATI_SEQUENCE_STATE_INCOMPLETE )
{
sati_ata_flush_cache_construct(ata_io, sequence);
sequence->command_specific_data.translated_command = ATA_FLUSH_CACHE;
sequence->state = SATI_SEQUENCE_STATE_INCOMPLETE;
}
else
{
sati_ata_standby_immediate_construct(ata_io, sequence);
sequence->command_specific_data.translated_command = ATA_STANDBY_IMMED;
}
break;
//Power Condition Field is set to 0xB(force Standby state)
case SCSI_START_STOP_UNIT_POWER_CONDITION_FORCE_S_CONTROL:
if( SATI_START_STOP_UNIT_NO_FLUSH_BIT(cdb) == 0 &&
sequence->state != SATI_SEQUENCE_STATE_INCOMPLETE )
{
sati_ata_flush_cache_construct(ata_io, sequence);
sequence->command_specific_data.translated_command = ATA_FLUSH_CACHE;
sequence->state = SATI_SEQUENCE_STATE_INCOMPLETE;
}
else
{
sati_ata_standby_construct(ata_io, sequence, 0);
sequence->command_specific_data.translated_command = ATA_STANDBY;
}
break;
case SCSI_START_STOP_UNIT_POWER_CONDITION_LU_CONTROL:
default: //TBD.
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
);
return SATI_FAILURE_CHECK_RESPONSE_DATA;
break;
}
if ( SATI_START_STOP_UNIT_IMMED_BIT(cdb) == 1 )
{
//@todo: return good status now.
;
}
sequence->type = SATI_SEQUENCE_START_STOP_UNIT;
return SATI_SUCCESS;
}
/**
* @brief This method will translate the ATA command register FIS
* response into an appropriate SCSI response for START STOP UNIT.
* For more information on the parameters passed to this method,
* please reference sati_translate_response().
*
* @return Indicate if the response translation succeeded.
* @retval SCI_SUCCESS This is returned if the data translation was
* successful.
*/
SATI_STATUS sati_start_stop_unit_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 * cdb = sati_cb_get_cdb_address(scsi_io);
if (sati_get_ata_status(register_fis) & ATA_STATUS_REG_ERROR_BIT)
{
switch ( sequence->command_specific_data.translated_command )
{
case ATA_FLUSH_CACHE:
case ATA_STANDBY_IMMED:
case ATA_IDLE_IMMED:
case ATA_IDLE:
case ATA_STANDBY:
//Note: There is lack of reference in spec of the error handling for
//READ_VERIFY command.
case ATA_READ_VERIFY_SECTORS:
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_CHECK_CONDITION,
SCSI_SENSE_ABORTED_COMMAND,
SCSI_ASC_COMMAND_SEQUENCE_ERROR,
SCSI_ASCQ_NO_ADDITIONAL_SENSE
);
break;
case ATA_MEDIA_EJECT:
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_CHECK_CONDITION,
SCSI_SENSE_ABORTED_COMMAND,
SCSI_ASC_MEDIA_LOAD_OR_EJECT_FAILED,
SCSI_ASCQ_NO_ADDITIONAL_SENSE
);
break;
default:
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
);
break;
}
sequence->state = SATI_SEQUENCE_STATE_FINAL;
return SATI_FAILURE_CHECK_RESPONSE_DATA;
}
else
{
switch ( sequence->command_specific_data.translated_command )
{
case ATA_READ_VERIFY_SECTORS:
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_GOOD,
SCSI_SENSE_NO_SENSE,
SCSI_ASC_NO_ADDITIONAL_SENSE,
SCSI_ASCQ_NO_ADDITIONAL_SENSE
);
//device state is now operational(active)
sequence->device->state = SATI_DEVICE_STATE_OPERATIONAL;
sequence->state = SATI_SEQUENCE_STATE_FINAL;
break;
case ATA_IDLE_IMMED:
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_GOOD,
SCSI_SENSE_NO_SENSE,
SCSI_ASC_NO_ADDITIONAL_SENSE,
SCSI_ASCQ_NO_ADDITIONAL_SENSE
);
sequence->device->state = SATI_DEVICE_STATE_IDLE;
sequence->state = SATI_SEQUENCE_STATE_FINAL;
break;
//These three commands will be issued when the power condition is 0x00 or 0x03
case ATA_MEDIA_EJECT:
case ATA_STANDBY:
case ATA_STANDBY_IMMED:
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_GOOD,
SCSI_SENSE_NO_SENSE,
SCSI_ASC_NO_ADDITIONAL_SENSE,
SCSI_ASCQ_NO_ADDITIONAL_SENSE
);
if( SATI_START_STOP_UNIT_POWER_CONDITION(cdb) == 0 )
{
sequence->device->state = SATI_DEVICE_STATE_STOPPED;
}
else
{
sequence->device->state = SATI_DEVICE_STATE_STANDBY;
}
sequence->state = SATI_SEQUENCE_STATE_FINAL;
break;
default:
//FLUSH Cache command does not require any success handling
break;
}
if (sequence->state == SATI_SEQUENCE_STATE_INCOMPLETE)
{
return SATI_SEQUENCE_INCOMPLETE;
}
}
return SATI_COMPLETE;
}
#endif // !defined(DISABLE_SATI_START_STOP_UNIT)