617 lines
23 KiB
C
617 lines
23 KiB
C
/*-
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/**
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* @file
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* @brief This file contains the method implementations common to
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* translations that move data (i.e. read, write). It has code for
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* the various different size CDBs (6, 10, 12, 16).
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*/
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#include <dev/isci/scil/sati_move.h>
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#include <dev/isci/scil/sati_callbacks.h>
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#include <dev/isci/scil/sati_translator_sequence.h>
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#include <dev/isci/scil/sati_util.h>
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#include <dev/isci/scil/intel_ata.h>
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#include <dev/isci/scil/intel_scsi.h>
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#include <dev/isci/scil/intel_sat.h>
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//******************************************************************************
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//* P R I V A T E M E T H O D S
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//******************************************************************************
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/**
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* @brief This method simply sets the command register based upon the
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* supplied opcodes and the data direction.
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* For more information on the parameters passed to this method,
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* please reference sati_translate_command()
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*
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* @param[in] write_opcode This parameter specifies the value to be written
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* to the ATA command register for a write (data out) operation.
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* @param[in] read_opcode This parameter specifies the value to be written
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* to the ATA command register for a read (data in) operation.
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*
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* @return none.
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*/
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static
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void sati_move_set_ata_command(
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SATI_TRANSLATOR_SEQUENCE_T * sequence,
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void * ata_io,
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U8 write_opcode,
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U8 read_opcode
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)
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{
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U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io);
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if (sequence->data_direction == SATI_DATA_DIRECTION_OUT)
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sati_set_ata_command(register_fis, write_opcode);
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else
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sati_set_ata_command(register_fis, read_opcode);
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}
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/**
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* @brief This method will translate the SCSI transfer count from the 6-byte
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* CDB into the appropriate amount in the ATA register FIS. Please
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* note for 48-bit UDMA requests, the caller must set the sector
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* count extended field. This method also sets protocol and
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* command fields.
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* For more information on the parameters passed to this method,
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* please reference sati_translate_command()
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*
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* @param[in] write_opcode This parameter specifies the value to be written
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* to the ATA command register for a write (data out) operation.
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* @param[in] read_opcode This parameter specifies the value to be written
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* to the ATA command register for a read (data in) operation.
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*
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* @return none
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*/
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static
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void sati_move_small_udma_translate_command(
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SATI_TRANSLATOR_SEQUENCE_T * sequence,
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void * scsi_io,
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void * ata_io,
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U8 write_opcode,
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U8 read_opcode
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)
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{
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U8 * cdb = sati_cb_get_cdb_address(scsi_io);
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U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io);
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sati_move_set_ata_command(sequence, ata_io, write_opcode, read_opcode);
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sati_set_ata_sector_count(register_fis, sati_get_cdb_byte(cdb, 4));
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if (sequence->data_direction == SATI_DATA_DIRECTION_IN)
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sequence->protocol = SAT_PROTOCOL_UDMA_DATA_IN;
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else
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sequence->protocol = SAT_PROTOCOL_UDMA_DATA_OUT;
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}
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/**
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* @brief This method will translate the SCSI transfer count from the
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* supplied sector_count parameter into the ATA register FIS.
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* The translation is specific to 10,12, 16 byte CDBs.
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* This method also sets protocol and command fields.
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* For more information on the parameters passed to this method,
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* please reference sati_translate_command()
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*
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* @param[in] sector_count This parameter specifies the number of sectors
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* to be transferred.
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* @param[in] write_opcode This parameter specifies the value to be written
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* to the ATA command register for a write (data out) operation.
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* @param[in] read_opcode This parameter specifies the value to be written
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* to the ATA command register for a read (data in) operation.
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*
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* @return Please reference sati_move_set_sector_count() for information
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* on return codes from this method.
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*/
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static
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SATI_STATUS sati_move_large_udma_translate_command(
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SATI_TRANSLATOR_SEQUENCE_T * sequence,
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void * scsi_io,
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void * ata_io,
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U32 sector_count,
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U8 write_opcode,
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U8 read_opcode
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)
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{
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sati_move_set_ata_command(sequence, ata_io, write_opcode, read_opcode);
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if (sequence->data_direction == SATI_DATA_DIRECTION_IN)
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sequence->protocol = SAT_PROTOCOL_UDMA_DATA_IN;
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else
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sequence->protocol = SAT_PROTOCOL_UDMA_DATA_OUT;
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return sati_move_set_sector_count(
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sequence, scsi_io, ata_io, sector_count, FALSE
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);
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}
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/**
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* @brief This method will translate the SCSI transfer count from the 6-byte
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* CDB into the appropriate amount in the ATA register FIS.
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* This is only used for translation of 6-byte SCSI CDBs.
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* For more information on the parameters passed to this method,
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* please reference sati_translate_command()
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*
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* @return none
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*/
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static
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void sati_move_ncq_translate_8_bit_sector_count(
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void * scsi_io,
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void * ata_io
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)
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{
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U8 * cdb = sati_cb_get_cdb_address(scsi_io);
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U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io);
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sati_set_ata_features(register_fis, sati_get_cdb_byte(cdb, 4));
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// A read 6 with a 0 sector count indicates a transfer of 256 sectors.
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// As a result update the MSB (features expanded register) to indicate
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// 256 sectors (0x100).
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if (sati_get_cdb_byte(cdb, 4) == 0)
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sati_set_ata_features_exp(register_fis, 1);
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}
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//******************************************************************************
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//* P U B L I C M E T H O D S
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//******************************************************************************
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/**
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* @brief This method will process a 32-bit sector into the appropriate fields
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* in a register FIS. This method works for both 8-bit and 16-bit sector
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* counts.
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* This is used for translation of 10, 12, and 16-byte SCSI CDBs.
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* For more information on the parameters passed to this method,
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* please reference sati_translate_command().
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*
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* @note This method should only be called for CDB sizes of 10-bytes or larger.
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*
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* @param[in] sector_count This parameter specifies the number of sectors
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* to be transferred.
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* @param[in] is_fpdma_command This parameter indicates if the supplied
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* ata_io is a first party DMA request (NCQ).
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*
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* @return none
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*/
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SATI_STATUS sati_move_set_sector_count(
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SATI_TRANSLATOR_SEQUENCE_T * sequence,
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void * scsi_io,
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void * ata_io,
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U32 sector_count,
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U8 is_fpdma_command
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)
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{
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U32 max_sector_count;
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U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io);
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if (sequence->device->capabilities & SATI_DEVICE_CAP_48BIT_ENABLE)
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max_sector_count = 65536;
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else
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max_sector_count = 256;
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// Check the CDB transfer length count and set the register FIS sector
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// count fields
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if (0 == sector_count)
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{
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// A SCSI sector count of 0 for 10-byte CDBs and larger indicate no data
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// transfer, so simply complete the command immediately.
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return SATI_COMPLETE;
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}
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else if (sector_count >= max_sector_count)
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{
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// We have to perform multiple SATA commands to satisfy the sector
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// count specified in the SCSI command.
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sequence->command_specific_data.move_sector_count =
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sector_count - max_sector_count;
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// In ATA a sector count of 0 indicates use the maximum allowed for
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// the command (i.e. 0 == 2^16 or 2^8).
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sector_count = 0;
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}
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if (is_fpdma_command)
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{
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sati_set_ata_features(register_fis, sector_count & 0xFF);
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sati_set_ata_features_exp(register_fis, (sector_count >> 8) & 0xFF);
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}
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else
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{
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sati_set_ata_sector_count(register_fis, sector_count & 0xFF);
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sati_set_ata_sector_count_exp(register_fis, (sector_count >> 8) & 0xFF);
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}
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return SATI_SUCCESS;
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}
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/**
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* @brief This method simply translates the 32-bit logical block address
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* field from the SCSI CDB (10 or 12-byte) into the ATA task
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* file (register FIS).
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* For more information on the parameters passed to this method,
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* please reference sati_translate_command()
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*
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* @return none
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*/
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void sati_move_translate_32_bit_lba(
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SATI_TRANSLATOR_SEQUENCE_T * sequence,
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void * scsi_io,
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void * ata_io
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)
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{
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U8 * cdb = sati_cb_get_cdb_address(scsi_io);
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U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io);
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sati_set_ata_lba_low(register_fis, sati_get_cdb_byte(cdb, 5));
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sati_set_ata_lba_mid(register_fis, sati_get_cdb_byte(cdb, 4));
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sati_set_ata_lba_high(register_fis, sati_get_cdb_byte(cdb, 3));
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sati_set_ata_lba_low_exp(register_fis, sati_get_cdb_byte(cdb, 2));
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sati_set_ata_lba_mid_exp(register_fis, 0);
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sati_set_ata_lba_high_exp(register_fis, 0);
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}
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/**
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* @brief This method simply translates the 64-bit logical block address
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* field from the SCSI CDB (16 byte) into the ATA task
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* file (register FIS). The 2 most significant bytes must be 0,
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* since ATA devices can, at most, support 48-bits of LBA.
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* For more information on the parameters passed to this method,
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* please reference sati_translate_command()
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*
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* @return Indicate if the LBA translation succeeded.
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* @return SATI_SUCCESS This is returned if translation was successful.
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* @return SATI_FAILURE_CHECK_RESPONSE_DATA This is returned if either
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* of the 2 most significant bytes contain a non-zero value.
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*/
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SATI_STATUS sati_move_translate_64_bit_lba(
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SATI_TRANSLATOR_SEQUENCE_T * sequence,
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void * scsi_io,
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void * ata_io
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)
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{
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U8 * cdb = sati_cb_get_cdb_address(scsi_io);
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U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io);
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// Ensure we receive a logical block address that is within range of
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// addressibility per the ATA specification (i.e. 48-bit or 28-bit).
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if ( (sati_get_cdb_byte(cdb, 2) == 0) && (sati_get_cdb_byte(cdb, 3) == 0) )
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{
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sati_set_ata_lba_low(register_fis, sati_get_cdb_byte(cdb, 9));
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sati_set_ata_lba_mid(register_fis, sati_get_cdb_byte(cdb, 8));
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sati_set_ata_lba_high(register_fis, sati_get_cdb_byte(cdb, 7));
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sati_set_ata_lba_low_exp(register_fis, sati_get_cdb_byte(cdb, 6));
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sati_set_ata_lba_mid_exp(register_fis, sati_get_cdb_byte(cdb, 5));
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sati_set_ata_lba_high_exp(register_fis, sati_get_cdb_byte(cdb, 4));
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return SATI_SUCCESS;
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}
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else
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{
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sati_scsi_sense_data_construct(
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sequence,
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scsi_io,
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SCSI_STATUS_CHECK_CONDITION,
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SCSI_SENSE_ILLEGAL_REQUEST,
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SCSI_ASC_LBA_OUT_OF_RANGE,
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SCSI_ASCQ_LBA_OUT_OF_RANGE
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);
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return SATI_FAILURE_CHECK_RESPONSE_DATA;
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}
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}
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/**
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* @brief This method will translate the pieces common to SCSI read and
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* write 6 byte commands. Depending upon the capabilities
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* supported by the target different ATA commands can be selected.
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* For more information on the parameters passed to this method,
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* please reference sati_translate_command().
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*
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* @return Indicate if the command translation succeeded.
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* @retval SCI_SUCCESS This is returned if the command translation was
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* successful.
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*/
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SATI_STATUS sati_move_6_translate_command(
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SATI_TRANSLATOR_SEQUENCE_T * sequence,
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void * scsi_io,
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void * ata_io
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)
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{
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U8 * cdb = sati_cb_get_cdb_address(scsi_io);
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U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io);
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// Translate the logical block address information from the SCSI CDB.
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// There is only 5 bits of MSB located in byte 1 of the CDB.
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sati_set_ata_lba_low(register_fis, sati_get_cdb_byte(cdb, 3));
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sati_set_ata_lba_mid(register_fis, sati_get_cdb_byte(cdb, 2));
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sati_set_ata_lba_high(register_fis, sati_get_cdb_byte(cdb, 1) & 0x1F);
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sati_move_translate_command(sequence, scsi_io, ata_io, 0);
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return SATI_SUCCESS;
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}
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/**
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* @brief This method will translate the pieces common to SCSI read and
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* write 10/12 byte commands. Depending upon the capabilities
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* supported by the target different ATA commands can be selected.
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* For more information on the parameters passed to this method,
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* please reference sati_translate_command().
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*
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* @param[in] device_head This parameter specifies the contents to be
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* written to the device head register.
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*
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* @return Indicate if the command translation succeeded.
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* @retval SCI_SUCCESS This is returned if the command translation was
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* successful.
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*/
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SATI_STATUS sati_move_32_bit_lba_translate_command(
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SATI_TRANSLATOR_SEQUENCE_T * sequence,
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void * scsi_io,
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void * ata_io,
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U8 device_head
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)
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{
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sati_move_translate_32_bit_lba(sequence, scsi_io, ata_io);
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sati_move_translate_command(sequence, scsi_io, ata_io, device_head);
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return SATI_SUCCESS;
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}
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/**
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* @brief This method provides the common translation functionality for
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* the 6-byte move command descriptor blocks (CDBs).
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* This method will ensure that the following is performed:
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* - command register is set
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* - the SATI_TRANSLATOR_SEQUENCE::protocol field is set
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* - the sector count field(s) are set
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* - sati_move_6_translate_command() is invoked.
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* For more information on the parameters passed to this method,
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* please reference sati_translate_command().
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*
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* @pre The caller must ensure that the
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* SATI_TRANSLATOR_SEQUENCE::data_direction field has already been set.
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*
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* @return Indicate if the command translation succeeded.
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* @see sati_move_6_translate_command() for additional return codes.
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*/
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SATI_STATUS sati_move_small_translate_command(
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SATI_TRANSLATOR_SEQUENCE_T * sequence,
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void * scsi_io,
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void * ata_io
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)
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{
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// Translation of the sector count is performed differently for NCQ vs.
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// other protocols.
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if (sequence->device->capabilities & SATI_DEVICE_CAP_NCQ_SUPPORTED_ENABLE)
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{
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sati_move_set_ata_command(
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sequence, ata_io, ATA_WRITE_FPDMA, ATA_READ_FPDMA
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);
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sati_move_ncq_translate_8_bit_sector_count(scsi_io, ata_io);
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sequence->protocol = SAT_PROTOCOL_FPDMA;
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}
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else if (sequence->device->capabilities & SATI_DEVICE_CAP_48BIT_ENABLE)
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{
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U8 * cdb = sati_cb_get_cdb_address(scsi_io);
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sati_move_small_udma_translate_command(
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sequence, scsi_io, ata_io, ATA_WRITE_DMA_EXT, ATA_READ_DMA_EXT
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);
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|
// A read/write 6 with a 0 sector count indicates a transfer of 256
|
|
// sectors. As a result update the MSB (features expanded register)
|
|
// to indicate 256 sectors (0x100).
|
|
if (sati_get_cdb_byte(cdb, 4) == 0)
|
|
{
|
|
U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io);
|
|
sati_set_ata_sector_count_exp(register_fis, 1);
|
|
}
|
|
}
|
|
else if (sequence->device->capabilities & SATI_DEVICE_CAP_UDMA_ENABLE)
|
|
{
|
|
sati_move_small_udma_translate_command(
|
|
sequence, scsi_io, ata_io, ATA_WRITE_DMA, ATA_READ_DMA
|
|
);
|
|
}
|
|
else
|
|
{
|
|
/**
|
|
* Currently the translation does not support devices incapable of
|
|
* handling the 48-bit feature set (i.e. 16 bits of sector count).
|
|
*/
|
|
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;
|
|
}
|
|
|
|
return sati_move_6_translate_command(sequence, scsi_io, ata_io);
|
|
}
|
|
|
|
/**
|
|
* @brief This method provides the common translation functionality for
|
|
* the larger command descriptor blocks (10, 12, 16-byte CDBs).
|
|
* For more information on the parameters passed to this method,
|
|
* please reference sati_translate_command().
|
|
*
|
|
* @param[in] sector_count This parameter specifies the number of sectors
|
|
* to be transferred.
|
|
* @param[in] device_head This parameter specifies the contents to be
|
|
* written to the device head register.
|
|
*
|
|
* @return Indicate if the command translation succeeded.
|
|
* @retval SATI_FAILURE This value is returned if neither NCQ or DMA is
|
|
* supported by the target device.
|
|
* @see sati_move_set_sector_count() for additional return codes.
|
|
*/
|
|
SATI_STATUS sati_move_large_translate_command(
|
|
SATI_TRANSLATOR_SEQUENCE_T * sequence,
|
|
void * scsi_io,
|
|
void * ata_io,
|
|
U32 sector_count,
|
|
U8 * ata_device_head
|
|
)
|
|
{
|
|
SATI_STATUS status = SATI_SUCCESS;
|
|
U8 * cdb = sati_cb_get_cdb_address(scsi_io);
|
|
|
|
// Parts of translation (e.g. sector count) is performed differently
|
|
// for NCQ vs. other protocols.
|
|
if (sequence->device->capabilities & SATI_DEVICE_CAP_NCQ_SUPPORTED_ENABLE)
|
|
{
|
|
// if the user did not request to ignore FUA
|
|
if((sequence->device->capabilities & SATI_DEVICE_CAP_IGNORE_FUA)==0)
|
|
{
|
|
// Is the Force Unit Access bit set?
|
|
if (sati_get_cdb_byte(cdb, 1) & SCSI_MOVE_FUA_BIT_ENABLE)
|
|
*ata_device_head = ATA_DEV_HEAD_REG_FUA_ENABLE;
|
|
}
|
|
|
|
sati_move_set_ata_command(
|
|
sequence, ata_io, ATA_WRITE_FPDMA, ATA_READ_FPDMA
|
|
);
|
|
status = sati_move_set_sector_count(
|
|
sequence, scsi_io, ata_io, sector_count, TRUE
|
|
);
|
|
sequence->protocol = SAT_PROTOCOL_FPDMA;
|
|
}
|
|
else if (sequence->device->capabilities & SATI_DEVICE_CAP_48BIT_ENABLE)
|
|
{
|
|
// Is the Force Unit Access bit set? If it is, then error. We
|
|
// aren't supporting this yet for normal DMA.
|
|
if (sati_get_cdb_byte(cdb, 1) & SCSI_MOVE_FUA_BIT_ENABLE)
|
|
{
|
|
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;
|
|
}
|
|
|
|
status = sati_move_large_udma_translate_command(
|
|
sequence,
|
|
scsi_io,
|
|
ata_io,
|
|
sector_count,
|
|
ATA_WRITE_DMA_EXT,
|
|
ATA_READ_DMA_EXT
|
|
);
|
|
}
|
|
else if (sequence->device->capabilities & SATI_DEVICE_CAP_UDMA_ENABLE)
|
|
{
|
|
status = sati_move_large_udma_translate_command(
|
|
sequence,
|
|
scsi_io,
|
|
ata_io,
|
|
sector_count,
|
|
ATA_WRITE_DMA,
|
|
ATA_READ_DMA
|
|
);
|
|
}
|
|
else
|
|
{
|
|
/**
|
|
* Currently the translation does not support devices incapable of
|
|
* handling the 48-bit feature set (i.e. 16 bits of sector count).
|
|
*/
|
|
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;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief This method simply performs the functionality common to all
|
|
* payload data movement translations (i.e. READ/WRITE).
|
|
* For more information on the parameters passed to this method,
|
|
* please reference sati_translate_command().
|
|
*
|
|
* @param[in] device_head This parameter specifies the current contents
|
|
* to be written to the ATA task file (register FIS) device
|
|
* head register.
|
|
*
|
|
* @return none
|
|
*/
|
|
void sati_move_translate_command(
|
|
SATI_TRANSLATOR_SEQUENCE_T * sequence,
|
|
void * scsi_io,
|
|
void * ata_io,
|
|
U8 device_head
|
|
)
|
|
{
|
|
U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io);
|
|
|
|
sati_set_ata_device_head(
|
|
register_fis, device_head | ATA_DEV_HEAD_REG_LBA_MODE_ENABLE
|
|
);
|
|
}
|
|
|