/*- * 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 __FBSDID("$FreeBSD$"); /** * @file * @brief This file contains the method implementations common to * translations that move data (i.e. read, write). It has code for * the various different size CDBs (6, 10, 12, 16). */ #include #include #include #include #include #include #include //****************************************************************************** //* P R I V A T E M E T H O D S //****************************************************************************** /** * @brief This method simply sets the command register based upon the * supplied opcodes and the data direction. * For more information on the parameters passed to this method, * please reference sati_translate_command() * * @param[in] write_opcode This parameter specifies the value to be written * to the ATA command register for a write (data out) operation. * @param[in] read_opcode This parameter specifies the value to be written * to the ATA command register for a read (data in) operation. * * @return none. */ static void sati_move_set_ata_command( SATI_TRANSLATOR_SEQUENCE_T * sequence, void * ata_io, U8 write_opcode, U8 read_opcode ) { U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); if (sequence->data_direction == SATI_DATA_DIRECTION_OUT) sati_set_ata_command(register_fis, write_opcode); else sati_set_ata_command(register_fis, read_opcode); } /** * @brief This method will translate the SCSI transfer count from the 6-byte * CDB into the appropriate amount in the ATA register FIS. Please * note for 48-bit UDMA requests, the caller must set the sector * count extended field. This method also sets protocol and * command fields. * For more information on the parameters passed to this method, * please reference sati_translate_command() * * @param[in] write_opcode This parameter specifies the value to be written * to the ATA command register for a write (data out) operation. * @param[in] read_opcode This parameter specifies the value to be written * to the ATA command register for a read (data in) operation. * * @return none */ static void sati_move_small_udma_translate_command( SATI_TRANSLATOR_SEQUENCE_T * sequence, void * scsi_io, void * ata_io, U8 write_opcode, U8 read_opcode ) { U8 * cdb = sati_cb_get_cdb_address(scsi_io); U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); sati_move_set_ata_command(sequence, ata_io, write_opcode, read_opcode); sati_set_ata_sector_count(register_fis, sati_get_cdb_byte(cdb, 4)); if (sequence->data_direction == SATI_DATA_DIRECTION_IN) sequence->protocol = SAT_PROTOCOL_UDMA_DATA_IN; else sequence->protocol = SAT_PROTOCOL_UDMA_DATA_OUT; } /** * @brief This method will translate the SCSI transfer count from the * supplied sector_count parameter into the ATA register FIS. * The translation is specific to 10,12, 16 byte CDBs. * This method also sets protocol and command fields. * 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 transfered. * @param[in] write_opcode This parameter specifies the value to be written * to the ATA command register for a write (data out) operation. * @param[in] read_opcode This parameter specifies the value to be written * to the ATA command register for a read (data in) operation. * * @return Please reference sati_move_set_sector_count() for information * on return codes from this method. */ static SATI_STATUS sati_move_large_udma_translate_command( SATI_TRANSLATOR_SEQUENCE_T * sequence, void * scsi_io, void * ata_io, U32 sector_count, U8 write_opcode, U8 read_opcode ) { sati_move_set_ata_command(sequence, ata_io, write_opcode, read_opcode); if (sequence->data_direction == SATI_DATA_DIRECTION_IN) sequence->protocol = SAT_PROTOCOL_UDMA_DATA_IN; else sequence->protocol = SAT_PROTOCOL_UDMA_DATA_OUT; return sati_move_set_sector_count( sequence, scsi_io, ata_io, sector_count, FALSE ); } /** * @brief This method will translate the SCSI transfer count from the 6-byte * CDB into the appropriate amount in the ATA register FIS. * This is only used for translation of 6-byte SCSI CDBs. * For more information on the parameters passed to this method, * please reference sati_translate_command() * * @return none */ static void sati_move_ncq_translate_8_bit_sector_count( void * scsi_io, void * ata_io ) { U8 * cdb = sati_cb_get_cdb_address(scsi_io); U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); sati_set_ata_features(register_fis, sati_get_cdb_byte(cdb, 4)); // A read 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) sati_set_ata_features_exp(register_fis, 1); } //****************************************************************************** //* P U B L I C M E T H O D S //****************************************************************************** /** * @brief This method will process a 32-bit sector into the appropriate fields * in a register FIS. This method works for both 8-bit and 16-bit sector * counts. * This is used for translation of 10, 12, and 16-byte SCSI CDBs. * For more information on the parameters passed to this method, * please reference sati_translate_command(). * * @note This method should only be called for CDB sizes of 10-bytes or larger. * * @param[in] sector_count This parameter specifies the number of sectors * to be transfered. * @param[in] is_fpdma_command This parameter indicates if the supplied * ata_io is a first party DMA request (NCQ). * * @return none */ SATI_STATUS sati_move_set_sector_count( SATI_TRANSLATOR_SEQUENCE_T * sequence, void * scsi_io, void * ata_io, U32 sector_count, U8 is_fpdma_command ) { U32 max_sector_count; U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); if (sequence->device->capabilities & SATI_DEVICE_CAP_48BIT_ENABLE) max_sector_count = 65536; else max_sector_count = 256; // Check the CDB transfer length count and set the register FIS sector // count fields if (0 == sector_count) { // A SCSI sector count of 0 for 10-byte CDBs and larger indicate no data // transfer, so simply complete the command immediately. return SATI_COMPLETE; } else if (sector_count >= max_sector_count) { // We have to perform multiple SATA commands to satisfy the sector // count specified in the SCSI command. sequence->command_specific_data.move_sector_count = sector_count - max_sector_count; // In ATA a sector count of 0 indicates use the maximum allowed for // the command (i.e. 0 == 2^16 or 2^8). sector_count = 0; } if (is_fpdma_command) { sati_set_ata_features(register_fis, sector_count & 0xFF); sati_set_ata_features_exp(register_fis, (sector_count >> 8) & 0xFF); } else { sati_set_ata_sector_count(register_fis, sector_count & 0xFF); sati_set_ata_sector_count_exp(register_fis, (sector_count >> 8) & 0xFF); } return SATI_SUCCESS; } /** * @brief This method simply translates the 32-bit logical block address * field from the SCSI CDB (10 or 12-byte) into the ATA task * file (register FIS). * For more information on the parameters passed to this method, * please reference sati_translate_command() * * @return none */ void sati_move_translate_32_bit_lba( SATI_TRANSLATOR_SEQUENCE_T * sequence, void * scsi_io, void * ata_io ) { U8 * cdb = sati_cb_get_cdb_address(scsi_io); U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); sati_set_ata_lba_low(register_fis, sati_get_cdb_byte(cdb, 5)); sati_set_ata_lba_mid(register_fis, sati_get_cdb_byte(cdb, 4)); sati_set_ata_lba_high(register_fis, sati_get_cdb_byte(cdb, 3)); sati_set_ata_lba_low_exp(register_fis, sati_get_cdb_byte(cdb, 2)); sati_set_ata_lba_mid_exp(register_fis, 0); sati_set_ata_lba_high_exp(register_fis, 0); } /** * @brief This method simply translates the 64-bit logical block address * field from the SCSI CDB (16 byte) into the ATA task * file (register FIS). The 2 most significant bytes must be 0, * since ATA devices can, at most, support 48-bits of LBA. * For more information on the parameters passed to this method, * please reference sati_translate_command() * * @return Indicate if the LBA translation succeeded. * @return SATI_SUCCESS This is returned if translation was successful. * @return SATI_FAILURE_CHECK_RESPONSE_DATA This is returned if either * of the 2 most significant bytes contain a non-zero value. */ SATI_STATUS sati_move_translate_64_bit_lba( SATI_TRANSLATOR_SEQUENCE_T * sequence, void * scsi_io, void * ata_io ) { U8 * cdb = sati_cb_get_cdb_address(scsi_io); U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); // Ensure we receive a logical block address that is within range of // addressibility per the ATA specification (i.e. 48-bit or 28-bit). if ( (sati_get_cdb_byte(cdb, 2) == 0) && (sati_get_cdb_byte(cdb, 3) == 0) ) { sati_set_ata_lba_low(register_fis, sati_get_cdb_byte(cdb, 9)); sati_set_ata_lba_mid(register_fis, sati_get_cdb_byte(cdb, 8)); sati_set_ata_lba_high(register_fis, sati_get_cdb_byte(cdb, 7)); sati_set_ata_lba_low_exp(register_fis, sati_get_cdb_byte(cdb, 6)); sati_set_ata_lba_mid_exp(register_fis, sati_get_cdb_byte(cdb, 5)); sati_set_ata_lba_high_exp(register_fis, sati_get_cdb_byte(cdb, 4)); return SATI_SUCCESS; } else { sati_scsi_sense_data_construct( sequence, scsi_io, SCSI_STATUS_CHECK_CONDITION, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_LBA_OUT_OF_RANGE, SCSI_ASCQ_LBA_OUT_OF_RANGE ); return SATI_FAILURE_CHECK_RESPONSE_DATA; } } /** * @brief This method will translate the pieces common to SCSI read and * write 6 byte commands. Depending upon the capabilities * supported by the target different ATA commands can be selected. * 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. */ SATI_STATUS sati_move_6_translate_command( SATI_TRANSLATOR_SEQUENCE_T * sequence, void * scsi_io, void * ata_io ) { U8 * cdb = sati_cb_get_cdb_address(scsi_io); U8 * register_fis = sati_cb_get_h2d_register_fis_address(ata_io); // Translate the logical block address information from the SCSI CDB. // There is only 5 bits of MSB located in byte 1 of the CDB. sati_set_ata_lba_low(register_fis, sati_get_cdb_byte(cdb, 3)); sati_set_ata_lba_mid(register_fis, sati_get_cdb_byte(cdb, 2)); sati_set_ata_lba_high(register_fis, sati_get_cdb_byte(cdb, 1) & 0x1F); sati_move_translate_command(sequence, scsi_io, ata_io, 0); return SATI_SUCCESS; } /** * @brief This method will translate the pieces common to SCSI read and * write 10/12 byte commands. Depending upon the capabilities * supported by the target different ATA commands can be selected. * For more information on the parameters passed to this method, * please reference sati_translate_command(). * * @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 SCI_SUCCESS This is returned if the command translation was * successful. */ SATI_STATUS sati_move_32_bit_lba_translate_command( SATI_TRANSLATOR_SEQUENCE_T * sequence, void * scsi_io, void * ata_io, U8 device_head ) { sati_move_translate_32_bit_lba(sequence, scsi_io, ata_io); sati_move_translate_command(sequence, scsi_io, ata_io, device_head); return SATI_SUCCESS; } /** * @brief This method provides the common translation functionality for * the 6-byte move command descriptor blocks (CDBs). * This method will ensure that the following is performed: * - command register is set * - the SATI_TRANSLATOR_SEQUENCE::protocol field is set * - the sector count field(s) are set * - sati_move_6_translate_command() is invoked. * For more information on the parameters passed to this method, * please reference sati_translate_command(). * * @pre The caller must ensure that the * SATI_TRANSLATOR_SEQUENCE::data_direction field has already been set. * * @return Indicate if the command translation succeeded. * @see sati_move_6_translate_command() for additional return codes. */ SATI_STATUS sati_move_small_translate_command( SATI_TRANSLATOR_SEQUENCE_T * sequence, void * scsi_io, void * ata_io ) { // Translation of the sector count is performed differently for NCQ vs. // other protocols. if (sequence->device->capabilities & SATI_DEVICE_CAP_NCQ_SUPPORTED_ENABLE) { sati_move_set_ata_command( sequence, ata_io, ATA_WRITE_FPDMA, ATA_READ_FPDMA ); sati_move_ncq_translate_8_bit_sector_count(scsi_io, ata_io); sequence->protocol = SAT_PROTOCOL_FPDMA; } else if (sequence->device->capabilities & SATI_DEVICE_CAP_48BIT_ENABLE) { U8 * cdb = sati_cb_get_cdb_address(scsi_io); sati_move_small_udma_translate_command( sequence, scsi_io, ata_io, ATA_WRITE_DMA_EXT, ATA_READ_DMA_EXT ); // 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 transfered. * @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 ); }