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freebsd-skq/sys/dev/isci/scil/sati_mode_sense.c
Jim Harris f11c7f6305 Add isci(4) driver for amd64 and i386 targets. 
The isci driver is for the integrated SAS controller in the Intel C600
(Patsburg) chipset.  Source files in sys/dev/isci directory are
FreeBSD-specific, and sys/dev/isci/scil subdirectory contains
an OS-agnostic library (SCIL) published by Intel to control the SAS
controller.  This library is used primarily as-is in this driver, with
some post-processing to better integrate into the kernel build
environment.

isci.4 and a README in the sys/dev/isci directory contain a few
additional details.

This driver is only built for amd64 and i386 targets.

Sponsored by: Intel
Reviewed by: scottl
Approved by: scottl
2012-01-31 19:38:18 +00:00

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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("$FreeBSD$");
/**
* @file
* @brief This file contains the method implementations required to
* translate the SCSI mode sense (6 and 10-byte) commands.
*/
#if !defined(DISABLE_SATI_MODE_SENSE)
#include <dev/isci/scil/sati_mode_sense.h>
#include <dev/isci/scil/sati_mode_pages.h>
#include <dev/isci/scil/sati_callbacks.h>
#include <dev/isci/scil/sati_util.h>
#include <dev/isci/scil/intel_scsi.h>
#include <dev/isci/scil/intel_ata.h>
//******************************************************************************
//* P R I V A T E M E T H O D S
//******************************************************************************
#define STANDBY_TIMER_DISABLED 0x00
#define STANDBY_TIMER_ENABLED 0x01
#define STANDBY_TIMER_SUPPORTED 0x2000
/**
* @brief This method indicates if the supplied page control is supported
* by this translation implementation. Currently savable parameters
* (i.e. non-volatile) are not supported.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @return This method returns an indication of whether the page control
* specified in the SCSI CDB is supported.
* @retval SATI_SUCCESS This value is returned if the page control is
* supported.
* @retval SATI_FAILURE_CHECK_RESPONSE_DATA This value is returned if the
* page control is not supported.
*/
static
SATI_STATUS sati_mode_sense_is_page_control_supported(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io
)
{
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
switch (sati_get_cdb_byte(cdb, 2) >> SCSI_MODE_SENSE_PC_SHIFT)
{
case SCSI_MODE_SENSE_PC_CURRENT:
case SCSI_MODE_SENSE_PC_DEFAULT:
case SCSI_MODE_SENSE_PC_CHANGEABLE:
return SATI_SUCCESS;
break;
default:
case SCSI_MODE_SENSE_PC_SAVED:
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_CHECK_CONDITION,
SCSI_SENSE_ILLEGAL_REQUEST,
SCSI_ASC_SAVING_PARMS_NOT_SUPPORTED,
SCSI_ASCQ_SAVING_PARMS_NOT_SUPPORTED
);
return SATI_FAILURE_CHECK_RESPONSE_DATA;
break;
}
}
/**
* @brief This method indicates if the page code field in the SCSI CDB
* is supported by this translation.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @param[in] cdb_length This parameter specifies the length of the SCSI
* CDB being translated (e.g. 6-byte, 10-byte, 12-byte, etc.)
*
* @return This method returns an indication as to whether the page code
* in the CDB is supported.
* @retval SATI_SUCCESS This value is returned if the page code is
* supported.
* @retval SATI_FAILURE_CHECK_RESPONSE_DATA This value is returned if the
* page code is not supported.
*/
static
SATI_STATUS sati_mode_sense_is_page_code_supported(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
U8 cdb_length
)
{
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
switch (sati_get_cdb_byte(cdb, 2) & SCSI_MODE_SENSE_PAGE_CODE_ENABLE)
{
case SCSI_MODE_PAGE_CACHING:
if (sati_get_cdb_byte(cdb, 0) == SCSI_MODE_SENSE_6)
sequence->type = SATI_SEQUENCE_MODE_SENSE_6_CACHING;
else
sequence->type = SATI_SEQUENCE_MODE_SENSE_10_CACHING;
break;
case SCSI_MODE_PAGE_ALL_PAGES:
if (sati_get_cdb_byte(cdb, 0) == SCSI_MODE_SENSE_6)
sequence->type = SATI_SEQUENCE_MODE_SENSE_6_ALL_PAGES;
else
sequence->type = SATI_SEQUENCE_MODE_SENSE_10_ALL_PAGES;
break;
case SCSI_MODE_PAGE_READ_WRITE_ERROR:
if (sati_get_cdb_byte(cdb, 0) == SCSI_MODE_SENSE_6)
sequence->type = SATI_SEQUENCE_MODE_SENSE_6_READ_WRITE_ERROR;
else
sequence->type = SATI_SEQUENCE_MODE_SENSE_10_READ_WRITE_ERROR;
break;
case SCSI_MODE_PAGE_DISCONNECT_RECONNECT:
if (sati_get_cdb_byte(cdb, 0) == SCSI_MODE_SENSE_6)
sequence->type = SATI_SEQUENCE_MODE_SENSE_6_DISCONNECT_RECONNECT;
else
sequence->type = SATI_SEQUENCE_MODE_SENSE_10_DISCONNECT_RECONNECT;
break;
case SCSI_MODE_PAGE_CONTROL:
if (sati_get_cdb_byte(cdb, 0) == SCSI_MODE_SENSE_6)
sequence->type = SATI_SEQUENCE_MODE_SENSE_6_CONTROL;
else
sequence->type = SATI_SEQUENCE_MODE_SENSE_10_CONTROL;
break;
case SCSI_MODE_PAGE_POWER_CONDITION:
if (sati_get_cdb_byte(cdb, 0) == SCSI_MODE_SENSE_6)
sequence->type = SATI_SEQUENCE_MODE_SENSE_6_POWER_CONDITION;
else
sequence->type = SATI_SEQUENCE_MODE_SENSE_10_POWER_CONDITION;
break;
case SCSI_MODE_PAGE_INFORMATIONAL_EXCP_CONTROL:
// The informational exceptions control page is only useful
// if SMART is supported.
if ((sequence->device->capabilities | SATI_DEVICE_CAP_SMART_SUPPORT)
== 0)
{
// For a MODE SENSE, utilize INVALID FIELD IN CDB,
// For a MODE SELECT, utilize INVALID FIELD IN PARAMETER LIST.
if (sati_get_cdb_byte(cdb, 0) == SCSI_MODE_SENSE_6)
{
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
);
}
else
{
sati_scsi_sense_data_construct(
sequence,
scsi_io,
SCSI_STATUS_CHECK_CONDITION,
SCSI_SENSE_ILLEGAL_REQUEST,
SCSI_ASC_INVALID_FIELD_IN_PARM_LIST,
SCSI_ASCQ_INVALID_FIELD_IN_PARM_LIST
);
}
return SATI_FAILURE_CHECK_RESPONSE_DATA;
}
if (sati_get_cdb_byte(cdb, 0) == SCSI_MODE_SENSE_6)
sequence->type = SATI_SEQUENCE_MODE_SENSE_6_INFORMATIONAL_EXCP_CONTROL;
else
sequence->type = SATI_SEQUENCE_MODE_SENSE_10_INFORMATIONAL_EXCP_CONTROL;
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
);
return SATI_FAILURE_CHECK_RESPONSE_DATA;
break;
}
return SATI_SUCCESS;
}
//******************************************************************************
//* P R O T E C T E D M E T H O D S
//******************************************************************************
/**
* @brief This method will calculate the size of the mode sense data header.
* This includes the block descriptor if one is requested.
*
* @param[in] scsi_io This parameter specifies the user's SCSI IO object
* for which to calculate the mode page header.
* @param[in] cdb_size This parameter specifies the number of bytes
* associated with the CDB for which to calculate the header.
*
* @return This method returns the size, in bytes, for the mode page header.
*/
U16 sati_mode_sense_calculate_page_header(
void * scsi_io,
U8 cdb_size
)
{
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
U16 page_length = 0;
// The Mode page header length is different for 6-byte vs. 10-byte CDBs.
if (cdb_size == 6)
page_length += SCSI_MODE_SENSE_6_HEADER_LENGTH;
else
page_length += SCSI_MODE_SENSE_10_HEADER_LENGTH;
// Are block descriptors disabled (DBD)? 0 indicates they are enabled.
if ((sati_get_cdb_byte(cdb, 1) & SCSI_MODE_SENSE_DBD_ENABLE) == 0)
{
// The LLBAA bit is not defined for 6-byte mode sense requests.
if ( (cdb_size == 10)
&& (sati_get_cdb_byte(cdb, 1) & SCSI_MODE_SENSE_LLBAA_ENABLE) )
page_length += SCSI_MODE_SENSE_LLBA_BLOCK_DESCRIPTOR_LENGTH;
else
page_length += SCSI_MODE_SENSE_STD_BLOCK_DESCRIPTOR_LENGTH;
}
return page_length;
}
/**
* @brief This method performs command translation common to all mode sense
* requests (6 or 10 byte).
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @param[in] cdb_length This parameter specifies the number of bytes
* in the CDB (6 or 10).
*
* @return This method returns an indication as to whether the translation
* succeeded.
* @retval SCI_SUCCESS This value is returned if translation succeeded.
* @see sati_mode_sense_is_page_control_supported() or
* sati_mode_sense_is_page_code_supported() for more information.
*/
SATI_STATUS sati_mode_sense_translate_command(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
void * ata_io,
U8 cdb_length
)
{
SATI_STATUS status;
/**
* Validate that the supplied page control (PC) field is supported.
*/
status = sati_mode_sense_is_page_control_supported(sequence, scsi_io);
if (status != SATI_SUCCESS)
return status;
/**
* Validate that the supplied page code is supported.
*/
status = sati_mode_sense_is_page_code_supported(sequence,scsi_io,cdb_length);
if (status != SATI_SUCCESS)
return status;
sati_ata_identify_device_construct(ata_io, sequence);
return SATI_SUCCESS;
}
/**
* @brief This method will build the standard block descriptor for a MODE
* SENSE 6 or 10 byte request.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @param[in] identify This parameter specifies the IDENTIFY DEVICE data
* associated with the SCSI IO.
* @param[in] offset This parameter specifies the offset into the data
* buffer at which to build the block descriptor.
*
* @return This method returns the size of the block descriptor built.
*/
U32 sati_mode_sense_build_std_block_descriptor(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
ATA_IDENTIFY_DEVICE_DATA_T * identify,
U32 offset
)
{
U32 lba_low = 0;
U32 lba_high = 0;
U32 sector_size = 0;
// Extract the sector information (sector size, logical blocks) from
// the retrieved ATA identify device data.
sati_ata_identify_device_get_sector_info(
identify, &lba_high, &lba_low, &sector_size
);
// Fill in the 4-byte logical block address field.
sati_set_data_byte(sequence, scsi_io, offset, (U8)((lba_low>>24) & 0xFF));
sati_set_data_byte(sequence, scsi_io, offset+1, (U8)((lba_low>>16) & 0xFF));
sati_set_data_byte(sequence, scsi_io, offset+2, (U8)((lba_low>>8) & 0xFF));
sati_set_data_byte(sequence, scsi_io, offset+3, (U8)(lba_low & 0xFF));
// Clear the reserved field.
sati_set_data_byte(sequence, scsi_io, offset+4, 0);
// Fill in the three byte Block Length field
sati_set_data_byte(sequence,scsi_io, offset+5, (U8)((sector_size>>16) & 0xFF));
sati_set_data_byte(sequence,scsi_io, offset+6, (U8)((sector_size>>8) & 0xFF));
sati_set_data_byte(sequence,scsi_io, offset+7, (U8)(sector_size & 0xFF));
return SCSI_MODE_SENSE_STD_BLOCK_DESCRIPTOR_LENGTH;
}
/**
* @brief This method simply copies the mode sense data into the buffer
* at the location specified by page_start. The buffer copied is
* determined by page_control (e.g. current, default, or changeable
* values).
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @param[in] page_start This parameter specifies the starting offset at
* which to copy the mode page data.
* @param[in] page_control This parameter specifies the page control
* indicating the source buffer to be copied.
* @param[in] page_code This specifies the mode sense page to copy.
*
* @return This method returns the size of the mode page data being copied.
*/
U32 sati_mode_sense_copy_initial_data(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
U32 page_start,
U8 page_control,
U8 page_code
)
{
U16 page_index = sati_mode_page_get_page_index(page_code);
U32 page_length = sat_mode_page_sizes[page_index];
// Find out if the current values are requested or if the default
// values are being requested.
if (page_control == SCSI_MODE_SENSE_PC_CHANGEABLE)
{
// Copy the changeable mode page information.
sati_copy_data(
sequence,
scsi_io,
page_start,
sat_changeable_mode_pages[page_index],
page_length
);
}
else
{
// Copy the default static values template to the user data area.
sati_copy_data(
sequence,
scsi_io,
page_start,
sat_default_mode_pages[page_index],
page_length
);
}
return page_length;
}
/**
* @brief This method performs the read/write error recovery mode page
* specific data translation based upon the contents of the remote
* device IDENTIFY DEVICE data.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @param[in] identify This parameter specifies the remote device's
* IDENTIFY DEVICE data received as part of the IO request.
* @param[in] offset This parameter specifies the offset into the data
* buffer where the translated data is to be written.
*
* @return This method returns the size of the mode page data that was
* translated.
*/
U32 sati_mode_sense_read_write_error_translate_data(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
ATA_IDENTIFY_DEVICE_DATA_T * identify,
U32 offset
)
{
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
U8 page_control = sati_get_cdb_byte(cdb, 2) >> SCSI_MODE_SENSE_PC_SHIFT;
U32 page_length;
page_length = sati_mode_sense_copy_initial_data(
sequence,
scsi_io,
offset,
page_control,
SCSI_MODE_PAGE_READ_WRITE_ERROR
);
// Currently we do not override any bits in this mode page from the
// identify data.
return page_length;
}
/**
* @brief This method performs the disconnect/reconnect mode page
* specific data translation based upon the contents of the remote
* device IDENTIFY DEVICE data.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @param[in] identify This parameter specifies the remote device's
* IDENTIFY DEVICE data received as part of the IO request.
* @param[in] offset This parameter specifies the offset into the data
* buffer where the translated data is to be written.
*
* @return This method returns the size of the mode page data that was
* translated.
*/
U32 sati_mode_sense_disconnect_reconnect_translate_data(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
ATA_IDENTIFY_DEVICE_DATA_T * identify,
U32 offset
)
{
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
U8 page_control = sati_get_cdb_byte(cdb, 2) >> SCSI_MODE_SENSE_PC_SHIFT;
U32 page_length;
page_length = sati_mode_sense_copy_initial_data(
sequence,
scsi_io,
offset,
page_control,
SCSI_MODE_PAGE_DISCONNECT_RECONNECT
);
// Currently we do not override any bits in this mode page from the
// identify data.
return page_length;
}
/**
* @brief This method performs the caching mode page specific data
* translation based upon the contents of the remote device IDENTIFY
* DEVICE data.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @param[in] identify This parameter specifies the remote device's
* IDENTIFY DEVICE data received as part of the IO request.
* @param[in] offset This parameter specifies the offset into the data
* buffer where the translated data is to be written.
*
* @return This method returns the size of the mode page data that was
* translated.
*/
U32 sati_mode_sense_caching_translate_data(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
ATA_IDENTIFY_DEVICE_DATA_T * identify,
U32 offset
)
{
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
U8 page_control = sati_get_cdb_byte(cdb, 2) >> SCSI_MODE_SENSE_PC_SHIFT;
U32 page_length;
page_length = sati_mode_sense_copy_initial_data(
sequence,
scsi_io,
offset,
page_control,
SCSI_MODE_PAGE_CACHING
);
// If the request queried for the current values, then
// we need to translate the data from the IDENTIFY DEVICE request.
if (page_control == SCSI_MODE_SENSE_PC_CURRENT)
{
U8 value;
// Update the Write Cache Enabled (WCE) bit in the mode page data
// buffer based on the identify response.
if ((identify->command_set_enabled0 & ATA_IDENTIFY_DEVICE_WCE_ENABLE) != 0)
{
sati_get_data_byte(sequence, scsi_io, offset+2, &value);
value |= SCSI_MODE_PAGE_CACHE_PAGE_WCE_BIT;
sati_set_data_byte(sequence, scsi_io, offset+2, value);
//This byte has been set twice and needs to be decremented
sequence->number_data_bytes_set--;
}
// Update the Disable Read Ahead (DRA) bit in the mode page data
// buffer based on the identify response.
if ((identify->command_set_enabled0 & ATA_IDENTIFY_DEVICE_RA_ENABLE) == 0)
{
// In SATA the polarity of the bits is inverse.
// - SCSI = Disable Read Ahead
// - ATA = Read Ahead
sati_get_data_byte(sequence, scsi_io, offset+12, &value);
value |= SCSI_MODE_PAGE_CACHE_PAGE_DRA_BIT;
sati_set_data_byte(sequence, scsi_io, offset+12, value);
//This byte has been set twice, the first time in
//sati_mode_sense_copy_initial_data. number_data_bytes_set
//needs to be decremented
sequence->number_data_bytes_set--;
}
}
return page_length;
}
/**
* @brief This method performs the control mode page specific data
* translation based upon the contents of the remote device
* IDENTIFY DEVICE data.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @param[in] identify This parameter specifies the remote device's
* IDENTIFY DEVICE data received as part of the IO request.
* @param[in] offset This parameter specifies the offset into the data
* buffer where the translated data is to be written.
*
* @return This method returns the size of the mode page data that was
* translated.
*/
U32 sati_mode_sense_control_translate_data(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
ATA_IDENTIFY_DEVICE_DATA_T * identify,
U32 offset
)
{
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
U8 page_control = sati_get_cdb_byte(cdb, 2) >> SCSI_MODE_SENSE_PC_SHIFT;
U32 page_length;
U8 value;
page_length = sati_mode_sense_copy_initial_data(
sequence,
scsi_io,
offset,
page_control,
SCSI_MODE_PAGE_CONTROL
);
if (sequence->device->descriptor_sense_enable)
{
sati_get_data_byte(sequence, scsi_io, offset+2,
&value);
sati_set_data_byte(sequence, scsi_io, offset+2,
value | SCSI_MODE_SELECT_MODE_PAGE_D_SENSE);
}
return page_length;
}
/**
* @brief This method performs the informational exceptions control mode
* page specific data translation based upon the contents of the
* remote device IDENTIFY DEVICE data.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @param[in] identify This parameter specifies the remote device's
* IDENTIFY DEVICE data received as part of the IO request.
* @param[in] offset This parameter specifies the offset into the data
* buffer where the translated data is to be written.
*
* @return This method returns the size of the mode page data that was
* translated.
*/
U32 sati_mode_sense_informational_excp_control_translate_data(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
ATA_IDENTIFY_DEVICE_DATA_T * identify,
U32 offset
)
{
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
U8 page_control = sati_get_cdb_byte(cdb, 2) >> SCSI_MODE_SENSE_PC_SHIFT;
U32 page_length;
page_length = sati_mode_sense_copy_initial_data(
sequence,
scsi_io,
offset,
page_control,
SCSI_MODE_PAGE_INFORMATIONAL_EXCP_CONTROL
);
// If the request queried for the current values, then
// we need to translate the data from the IDENTIFY DEVICE request.
if (page_control == SCSI_MODE_SENSE_PC_CURRENT)
{
U8 value;
sati_get_data_byte(sequence, scsi_io, offset+2, &value);
// Determine if the SMART feature set is supported and enabled.
if ( (identify->command_set_supported0
& ATA_IDENTIFY_COMMAND_SET_SUPPORTED0_SMART_ENABLE)
&& (identify->command_set_enabled0
& ATA_IDENTIFY_COMMAND_SET_ENABLED0_SMART_ENABLE) )
{
// Clear the DXCPT field since the SMART feature is supported/enabled.
value &= ~SCSI_MODE_PAGE_INFORMATIONAL_EXCP_DXCPT_ENABLE;
}
else
{
// Set the Disable Exception Control (DXCPT) field since the SMART
// feature is not supported or enabled.
value |= SCSI_MODE_PAGE_INFORMATIONAL_EXCP_DXCPT_ENABLE;
}
sati_set_data_byte(sequence, scsi_io, offset+2, value);
//This byte has been set twice, the first time in
//sati_mode_sense_copy_initial_data. number_data_bytes_set
//needs to be decremented
sequence->number_data_bytes_set--;
}
return page_length;
}
/**
* @brief This method performs the Power Condition mode page
* specific data translation based upon the contents of the
* remote device IDENTIFY DEVICE data.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @param[in] identify This parameter specifies the remote device's
* IDENTIFY DEVICE data received as part of the IO request.
* @param[in] offset This parameter specifies the offset into the data
* buffer where the translated data is to be written.
*
* @return This method returns the size of the mode page data that was
* translated.
*/
U32 sati_mode_sense_power_condition_translate_data(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
ATA_IDENTIFY_DEVICE_DATA_T * identify,
U32 offset
)
{
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
U8 page_control = sati_get_cdb_byte(cdb, 2) >> SCSI_MODE_SENSE_PC_SHIFT;
U8 ata_sb_timer;
//Represents tenths of seconds
U32 standby_timer = 0x00000000;
U8 standby_enabled = STANDBY_TIMER_DISABLED;
if ((page_control == SCSI_MODE_SENSE_PC_CURRENT) &&
(identify->capabilities1 & STANDBY_TIMER_SUPPORTED))
{
standby_enabled = STANDBY_TIMER_ENABLED;
ata_sb_timer = sequence->device->ata_standby_timer;
//converting ATA timer values into SCSI timer values
if(ata_sb_timer <= 0xF0)
{
standby_timer = ata_sb_timer * 50;
}
else if(ata_sb_timer <= 0xFB)
{
standby_timer = ((ata_sb_timer - 240) * 18000);
}
else if(ata_sb_timer == 0xFC)
{
standby_timer = 12600;
}
else if(ata_sb_timer == 0xFD)
{
standby_timer = 432000;
}
else if(ata_sb_timer == 0xFF)
{
standby_timer = 12750;
}
else
{
standby_timer = 0xFFFFFFFF;
}
}
sati_set_data_byte(sequence, scsi_io, offset, SCSI_MODE_PAGE_POWER_CONDITION);
sati_set_data_byte(sequence, scsi_io, offset + 1, (SCSI_MODE_PAGE_1A_LENGTH - 2));
sati_set_data_byte(sequence, scsi_io, offset + 2, 0x00);
sati_set_data_byte(sequence, scsi_io, offset + 3, standby_enabled);
sati_set_data_byte(sequence, scsi_io, offset + 4, 0x00);
sati_set_data_byte(sequence, scsi_io, offset + 5, 0x00);
sati_set_data_byte(sequence, scsi_io, offset + 6, 0x00);
sati_set_data_byte(sequence, scsi_io, offset + 7, 0x00);
sati_set_data_byte(sequence, scsi_io, offset + 8, (U8) (standby_timer >> 24));
sati_set_data_byte(sequence, scsi_io, offset + 9, (U8) (standby_timer >> 16));
sati_set_data_byte(sequence, scsi_io, offset + 10, (U8) (standby_timer >> 8));
sati_set_data_byte(sequence, scsi_io, offset + 11, (U8) standby_timer);
return SCSI_MODE_PAGE_1A_LENGTH;
}
/**
* @brief This method performs the all pages mode page specific data
* translation based upon the contents of the remote device
* IDENTIFY DEVICE data. The ALL PAGES mode sense request asks
* for all of mode pages and sub-pages in a single page.
* The mode pages are added in ascending order.
* For more information on the parameters passed to this method,
* please reference sati_translate_command().
*
* @param[in] identify This parameter specifies the remote device's
* IDENTIFY DEVICE data received as part of the IO request.
* @param[in] offset This parameter specifies the offset into the data
* buffer where the translated data is to be written.
*
* @return This method returns the size of the mode page data that was
* translated.
*/
U32 sati_mode_sense_all_pages_translate_data(
SATI_TRANSLATOR_SEQUENCE_T * sequence,
void * scsi_io,
ATA_IDENTIFY_DEVICE_DATA_T * identify,
U32 offset
)
{
offset += sati_mode_sense_read_write_error_translate_data(
sequence, scsi_io, identify, offset
);
offset += sati_mode_sense_disconnect_reconnect_translate_data(
sequence, scsi_io, identify, offset
);
offset += sati_mode_sense_caching_translate_data(
sequence, scsi_io, identify, offset
);
offset += sati_mode_sense_control_translate_data(
sequence, scsi_io, identify, offset
);
offset += sati_mode_sense_informational_excp_control_translate_data(
sequence, scsi_io, identify, offset
);
return offset;
}
#endif // !defined(DISABLE_SATI_MODE_SENSE)
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