141 lines
4.2 KiB
C
141 lines
4.2 KiB
C
/**************************************************************************/
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/*!
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@file msc_device_app.c
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@author hathach (tinyusb.org)
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@section LICENSE
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Software License Agreement (BSD License)
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Copyright (c) 2013, hathach (tinyusb.org)
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All rights reserved.
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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 are met:
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1. 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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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holders nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY 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 OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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This file is part of the tinyusb stack.
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*/
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/**************************************************************************/
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#include "msc_device_app.h"
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#if CFG_TUD_MSC
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//--------------------------------------------------------------------+
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// INCLUDE
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//--------------------------------------------------------------------+
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//--------------------------------------------------------------------+
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// MACRO CONSTANT TYPEDEF
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//--------------------------------------------------------------------+
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scsi_sense_fixed_data_t mscd_sense_data =
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{
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.response_code = 0x70,
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.sense_key = 0, // no errors
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.additional_sense_len = sizeof(scsi_sense_fixed_data_t) - 8
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};
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static scsi_mode_parameters_t const msc_dev_mode_para =
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{
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.mode_data_length = 3,
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.medium_type = 0,
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.device_specific_para = 0,
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.block_descriptor_length = 0
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};
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//--------------------------------------------------------------------+
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// tinyusb callbacks
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//--------------------------------------------------------------------+
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void msc_app_mount(uint8_t rhport)
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{
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}
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void msc_app_umount(uint8_t rhport)
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{
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}
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int32_t tud_msc_scsi_cb (uint8_t rhport, uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize)
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{
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// read10 & write10 has their own callback and MUST not be handled here
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void const* ptr = NULL;
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uint16_t len = 0;
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// most scsi handled is input
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bool in_xfer = true;
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switch (scsi_cmd[0])
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{
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case SCSI_CMD_REQUEST_SENSE:
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ptr = &mscd_sense_data;
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len = sizeof(scsi_sense_fixed_data_t);
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break;
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case SCSI_CMD_MODE_SENSE_6:
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ptr = &msc_dev_mode_para;
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len = sizeof(msc_dev_mode_para);
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break;
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case SCSI_CMD_TEST_UNIT_READY:
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ptr = NULL;
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len = 0;
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break;
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case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
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ptr = NULL;
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len = 0;
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break;
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default:
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// negative is error -> Data stage is STALL, status = failed
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return -1;
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}
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// return len must not larger than bufsize
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TU_ASSERT( bufsize >= len );
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if ( ptr && len )
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{
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if(in_xfer)
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{
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memcpy(buffer, ptr, len);
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}else
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{
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// SCSI output
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}
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}
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//------------- clear sense data if it is not request sense command -------------//
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if ( SCSI_CMD_REQUEST_SENSE != scsi_cmd[0] )
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{
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mscd_sense_data.sense_key = SCSI_SENSEKEY_NONE;
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mscd_sense_data.additional_sense_code = 0;
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mscd_sense_data.additional_sense_qualifier = 0;
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}
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return len;
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}
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#endif
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