xref: /freebsd-10.0-release/sys/dev/isci/scil/sati_mode_sense_6.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
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

/**
 * @file
 * @brief This file contains the method implementations required to
 *        translate the SCSI mode sense 6-byte commands.
 */

#if !defined(DISABLE_SATI_MODE_SENSE)

#include <dev/isci/scil/sati_mode_sense.h>
#include <dev/isci/scil/sati_mode_sense_6.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
//******************************************************************************

/**
 * @brief This method builds the mode parameter header for a 6-byte SCSI
 *        mode sense data response.  The parameter header is 4 bytes in
 *        size.
 *        For more information on the parameters passed to this method,
 *        please reference sati_translate_command().
 *
 * @param[in] identify This parameter specifies the ATA remote device's
 *            received IDENTIFY DEVICE data.
 * @param[in] mode_data_length This parameter specifies the amount of data
 *            to be returned as part of this mode sense request.
 *
 * @return This method returns the number of bytes written into the
 *         data buffer.
 */
static
U32 sati_mode_sense_6_build_header(
   SATI_TRANSLATOR_SEQUENCE_T * sequence,
   void                       * scsi_io,
   ATA_IDENTIFY_DEVICE_DATA_T * identify,
   U8                           mode_data_length
)
{
   U8 * cdb = sati_cb_get_cdb_address(scsi_io);

   // Fill in the length of the mode parameter data returned (do not include
   // the size of the mode data length field in the total).
   sati_set_data_byte(sequence, scsi_io, 0, (U8)mode_data_length-1);

   // Medium Type is 0 for SBC devices
   sati_set_data_byte(sequence, scsi_io, 1, SCSI_MODE_HEADER_MEDIUM_TYPE_SBC);

   // Write Protect (WP), Rsvd, DPOFUA, Rsvd
   if (sequence->device->capabilities & SATI_DEVICE_CAP_DMA_FUA_ENABLE)
      sati_set_data_byte(sequence,scsi_io,2,SCSI_MODE_SENSE_HEADER_FUA_ENABLE);
   else
      sati_set_data_byte(sequence, scsi_io, 2, 0);

   // Set the block descriptor length if block descriptors are utilized.
   if (sati_get_cdb_byte(cdb, 1) & SCSI_MODE_SENSE_DBD_ENABLE)
      sati_set_data_byte(sequence, scsi_io, 3, 0);
   else
      sati_set_data_byte(
         sequence, scsi_io, 3, SCSI_MODE_SENSE_STD_BLOCK_DESCRIPTOR_LENGTH
      );

   return SCSI_MODE_SENSE_6_HEADER_LENGTH;
}

/**
 * @brief This method perform the data translation common to all SCSI MODE
 *        SENSE 6 byte commands.  This includes building the mode page
 *        header and block descriptor (if requested).
 *        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 to be used during translation.
 * @param[in] transfer_length This parameter specifies the size of the
 *            mode page (including header & block descriptor).
 *
 * @return This method returns the number of bytes written into the user's
 *         mode page data buffer.
 */
static
U32 sati_mode_sense_6_translate_data(
   SATI_TRANSLATOR_SEQUENCE_T * sequence,
   ATA_IDENTIFY_DEVICE_DATA_T * identify,
   void                       * scsi_io,
   U8                           transfer_length
)
{
   U8  * cdb = sati_cb_get_cdb_address(scsi_io);
   U32   offset;

   offset = sati_mode_sense_6_build_header(
               sequence, scsi_io, identify, transfer_length
            );

   // Determine if the caller disabled block descriptors (DBD).  If not,
   // then generate a block descriptor.
   if ((sati_get_cdb_byte(cdb, 1) & SCSI_MODE_SENSE_DBD_ENABLE) == 0)
      offset += sati_mode_sense_build_std_block_descriptor(
                   sequence, scsi_io, identify, offset
                );

   return offset;
}

//******************************************************************************
//* P R O T E C T E D   M E T H O D S
//******************************************************************************

/**
 * @brief This method will translate the SCSI mode sense 6 byte command
 *        into corresponding ATA commands.  If the command is well-formed,
 *        then the translation will result in an ATA IDENTIFY DEVICE
 *        command.
 *        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 This value is returned if
 *         sense data has been created as a result of something specified
 *         in the CDB.
 */
SATI_STATUS sati_mode_sense_6_translate_command(
   SATI_TRANSLATOR_SEQUENCE_T * sequence,
   void                       * scsi_io,
   void                       * ata_io
)
{
   U8 * cdb = sati_cb_get_cdb_address(scsi_io);

   // Set the data length based on the allocation length field in the CDB.
   sequence->allocation_length = sati_get_cdb_byte(cdb, 4);

   return sati_mode_sense_translate_command(sequence, scsi_io, ata_io, 6);
}

/**
 * @brief This method will perform data translation from the supplied ATA
 *        input data (i.e. an ATA IDENTIFY DEVICE block) into a CACHING
 *        mode page format.  The data will be written into the user's mode
 *        page data buffer.  This function operates specifically for MODE
 *        SENSE 6 commands.
 *        For more information on the parameters passed to this method,
 *        please reference sati_translate_data().
 *
 * @return none.
 */
void sati_mode_sense_6_caching_translate_data(
   SATI_TRANSLATOR_SEQUENCE_T * sequence,
   void                       * ata_input_data,
   void                       * scsi_io
)
{
   ATA_IDENTIFY_DEVICE_DATA_T * identify = (ATA_IDENTIFY_DEVICE_DATA_T*)
                                           ata_input_data;
   U8   data_length = (U8) sati_mode_sense_calculate_page_header(scsi_io, 6)
                           + SCSI_MODE_PAGE_08_LENGTH;
   U32  page_offset = sati_mode_sense_6_translate_data(
                         sequence, identify, scsi_io, data_length
                      );

   sati_mode_sense_caching_translate_data(
      sequence, scsi_io, identify, page_offset
   );
}

/**
 * @brief This method will perform data translation from the supplied ATA
 *        input data (i.e. an ATA IDENTIFY DEVICE block) into a INFORMATIONAL
 *        EXCEPTIONS CONTROL mode page format.  The data will be written
 *        into the user's mode page data buffer.  This function operates
 *        specifically for MODE SENSE 6 commands.
 *        For more information on the parameters passed to this method,
 *        please reference sati_translate_data().
 *
 * @return none.
 */
void sati_mode_sense_6_informational_excp_control_translate_data(
   SATI_TRANSLATOR_SEQUENCE_T * sequence,
   void                       * ata_input_data,
   void                       * scsi_io
)
{
   ATA_IDENTIFY_DEVICE_DATA_T * identify = (ATA_IDENTIFY_DEVICE_DATA_T*)
                                           ata_input_data;
   U8   data_length = (U8) sati_mode_sense_calculate_page_header(scsi_io, 6)
                           + SCSI_MODE_PAGE_1C_LENGTH;
   U32  page_offset = sati_mode_sense_6_translate_data(
                         sequence, identify, scsi_io, data_length
                      );

   sati_mode_sense_informational_excp_control_translate_data(
      sequence, scsi_io, identify, page_offset
   );
}

/**
* @brief This method will perform data translation from the supplied ATA
*        input data (i.e. an ATA IDENTIFY DEVICE block) into a DISCONNECT
*        RECONNECT mode page format.  The data will be written
*        into the user's mode page data buffer.  This function operates
*        specifically for MODE SENSE 6 commands.
*        For more information on the parameters passed to this method,
*        please reference sati_translate_data().
*
* @return none.
*/
void sati_mode_sense_6_disconnect_reconnect_translate_data(
   SATI_TRANSLATOR_SEQUENCE_T * sequence,
   void                       * ata_input_data,
   void                       * scsi_io
)
{
   ATA_IDENTIFY_DEVICE_DATA_T * identify = (ATA_IDENTIFY_DEVICE_DATA_T*)
      ata_input_data;

   U8   data_length = (U8) sati_mode_sense_calculate_page_header(scsi_io, 6)
      + SCSI_MODE_PAGE_02_LENGTH ;

   U32  page_offset = sati_mode_sense_6_translate_data(
                         sequence, identify, scsi_io, data_length
                      );

   sati_mode_sense_disconnect_reconnect_translate_data(
      sequence, scsi_io, identify, page_offset
   );
}

/**
* @brief This method will perform data translation from the supplied ATA
*        input data (i.e. an ATA IDENTIFY DEVICE block) into a READ WRITE ERROR
*        mode page format.  The data will be written
*        into the user's mode page data buffer.  This function operates
*        specifically for MODE SENSE 6 commands.
*        For more information on the parameters passed to this method,
*        please reference sati_translate_data().
*
* @return none.
*/
void sati_mode_sense_6_read_write_error_translate_data(
   SATI_TRANSLATOR_SEQUENCE_T * sequence,
   void                       * ata_input_data,
   void                       * scsi_io
)
{
   ATA_IDENTIFY_DEVICE_DATA_T * identify = (ATA_IDENTIFY_DEVICE_DATA_T*)
      ata_input_data;

   U8   data_length = (U8) sati_mode_sense_calculate_page_header(scsi_io, 6)
      + SCSI_MODE_PAGE_01_LENGTH;

   U32  page_offset = sati_mode_sense_6_translate_data(
                         sequence, identify, scsi_io, data_length
                      );

   sati_mode_sense_read_write_error_translate_data(
      sequence, scsi_io, identify, page_offset
   );
}

/**
* @brief This method will perform data translation from the supplied ATA
*        input data (i.e. an ATA IDENTIFY DEVICE block) into a CONTROL
*        mode page format.  The data will be written
*        into the user's mode page data buffer.  This function operates
*        specifically for MODE SENSE 6 commands.
*        For more information on the parameters passed to this method,
*        please reference sati_translate_data().
*
* @return none.
*/
void sati_mode_sense_6_control_translate_data(
   SATI_TRANSLATOR_SEQUENCE_T * sequence,
   void                       * ata_input_data,
   void                       * scsi_io
)
{
   ATA_IDENTIFY_DEVICE_DATA_T * identify = (ATA_IDENTIFY_DEVICE_DATA_T*)
      ata_input_data;

   U8   data_length = (U8) sati_mode_sense_calculate_page_header(scsi_io, 6)
      + SCSI_MODE_PAGE_0A_LENGTH;

   U32  page_offset = sati_mode_sense_6_translate_data(
                         sequence, identify, scsi_io, data_length
                      );

   sati_mode_sense_control_translate_data(
      sequence, scsi_io, identify, page_offset
   );
}

/**
* @brief This method will perform data translation from the supplied ATA
*        input data (i.e. an ATA IDENTIFY DEVICE block) into a Power
*        Condition mode page format.  The data will be written
*        into the user's mode page data buffer.  This function operates
*        specifically for MODE SENSE 6 commands.
*        For more information on the parameters passed to this method,
*        please reference sati_translate_data().
*
* @return none.
*/
void sati_mode_sense_6_power_condition_translate_data(
   SATI_TRANSLATOR_SEQUENCE_T * sequence,
   void                       * ata_input_data,
   void                       * scsi_io
)
{
   ATA_IDENTIFY_DEVICE_DATA_T * identify = (ATA_IDENTIFY_DEVICE_DATA_T*)
      ata_input_data;

   U8 data_length;
   U32  page_offset;

   data_length = (U8) sati_mode_sense_calculate_page_header(scsi_io, 6)
         + SCSI_MODE_PAGE_1A_LENGTH;

   page_offset = sati_mode_sense_6_translate_data(
         sequence, identify, scsi_io, data_length
   );

   sati_mode_sense_power_condition_translate_data(
      sequence, scsi_io, identify, page_offset
   );
}



/**
 * @brief This method will perform data translation from the supplied ATA
 *        input data (i.e. an ATA IDENTIFY DEVICE block) into an ALL
 *        PAGES mode page format.  The ALL PAGES mode page is basically a
 *        conglomeration of all mode pages and sub-pages into a single
 *        page.  The data will be written into the user's mode page
 *        data buffer.  This function operates specifically for MODE
 *        SENSE 6 commands.
 *        For more information on the parameters passed to this method,
 *        please reference sati_translate_data().
 *
 * @return none.
 */
void sati_mode_sense_6_all_pages_translate_data(
   SATI_TRANSLATOR_SEQUENCE_T * sequence,
   void                       * ata_input_data,
   void                       * scsi_io
)
{
   ATA_IDENTIFY_DEVICE_DATA_T * identify = (ATA_IDENTIFY_DEVICE_DATA_T*)
                                           ata_input_data;
   U8   data_length = (U8) sati_mode_sense_calculate_page_header(scsi_io, 6)
                           + SCSI_MODE_PAGE_01_LENGTH
                           + SCSI_MODE_PAGE_02_LENGTH
                           + SCSI_MODE_PAGE_08_LENGTH
                           + SCSI_MODE_PAGE_0A_LENGTH
                           + SCSI_MODE_PAGE_1C_LENGTH;

   U32  page_offset = sati_mode_sense_6_translate_data(
                         sequence, identify, scsi_io, data_length
                      );

   sati_mode_sense_all_pages_translate_data(
      sequence, scsi_io, identify, page_offset
   );
}

#endif // !defined(DISABLE_SATI_MODE_SENSE)