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Diffstat (limited to 'sys/dev/isci/scil/sati_report_luns.c')
| -rw-r--r-- | sys/dev/isci/scil/sati_report_luns.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/sys/dev/isci/scil/sati_report_luns.c b/sys/dev/isci/scil/sati_report_luns.c new file mode 100644 index 0000000..6aaad4d --- /dev/null +++ b/sys/dev/isci/scil/sati_report_luns.c @@ -0,0 +1,124 @@ +/*- + * 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 REPORT LUNS command. + */ + +#if !defined(DISABLE_SATI_REPORT_LUNS) + +#include <dev/isci/scil/sati_report_luns.h> +#include <dev/isci/scil/sati_callbacks.h> +#include <dev/isci/scil/sati_util.h> +#include <dev/isci/scil/intel_ata.h> +#include <dev/isci/scil/intel_scsi.h> + +/** + * @brief This method will translate the REPORT LUN SCSI command. This + * command is immediately completed, since there is no applicable + * ATA/ATAPI command. The data payload is written and SATI_COMPLETE + * is always returned. + * For more information on the parameters passed to this method, + * please reference sati_translate_command(). + * + * @return This method always indicates the translation is complete. + * @retval SATI_COMPLETE This value is always returned. + */ +SATI_STATUS sati_report_luns_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, 6) << 24) | + (sati_get_cdb_byte(cdb, 7) << 16) | + (sati_get_cdb_byte(cdb, 8) << 8) | + (sati_get_cdb_byte(cdb, 9)); + + // The first 4 bytes indicate the length of the LUN list. Each + // LUN entry is 8 bytes. There is only ever LUN 0 for ATA/ATAPI + // devices. The value reported is: n-7, where n is the last byte + // offset (i.e. 15) in the REPORT LUN data. + sati_set_data_byte(sequence, scsi_io, 0, 0); + sati_set_data_byte(sequence, scsi_io, 1, 0); + sati_set_data_byte(sequence, scsi_io, 2, 0); + sati_set_data_byte(sequence, scsi_io, 3, 8); + + // Bytes 4-7 are reserved. + sati_set_data_byte(sequence, scsi_io, 4, 0); + sati_set_data_byte(sequence, scsi_io, 5, 0); + sati_set_data_byte(sequence, scsi_io, 6, 0); + sati_set_data_byte(sequence, scsi_io, 7, 0); + + // Add in our single LUN of zero. + sati_set_data_byte(sequence, scsi_io, 8, 0); + sati_set_data_byte(sequence, scsi_io, 9, 0); + sati_set_data_byte(sequence, scsi_io, 10, 0); + sati_set_data_byte(sequence, scsi_io, 11, 0); + sati_set_data_byte(sequence, scsi_io, 12, 0); + sati_set_data_byte(sequence, scsi_io, 13, 0); + sati_set_data_byte(sequence, scsi_io, 14, 0); + sati_set_data_byte(sequence, scsi_io, 15, 0); + + return SATI_COMPLETE; +} + +#endif // !defined(DISABLE_SATI_REPORT_LUNS) + |
