storage.h

usbport-sl811usb主控器芯片usb程序实现

/*
 * Copyright (c) 2007, Benedikt Sauter <[e-mail]>
 * All rights reserved.
 *
 * Short descripton of file:
 *
 *
 * 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.
 *   * Neither the name of the FH Augsburg nor the names of its 
 *     contributors may be used to endorse or promote products derived 
 *     from this software without specific prior written permission.
 *
 * 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.
 */

void usb_storage_probe();
void usb_storage_check();

/* CSW Status Definitions */
#define CSW_CMD_PASSED                  0x00
#define CSW_CMD_FAILED                  0x01
#define CSW_PHASE_ERROR                 0x02


/* SCSI Commands */
#define SCSI_TEST_UNIT_READY            0x00
#define SCSI_REQUEST_SENSE              0x03
#define SCSI_FORMAT_UNIT                0x04
#define SCSI_INQUIRY                    0x12
#define SCSI_MODE_SELECT6               0x15
#define SCSI_MODE_SENSE6                0x1A
#define SCSI_START_STOP_UNIT            0x1B
#define SCSI_MEDIA_REMOVAL              0x1E
#define SCSI_READ_FORMAT_CAPACITIES     0x23
#define SCSI_READ_CAPACITY              0x25
#define SCSI_READ10                     0x28
#define SCSI_WRITE10                    0x2A
#define SCSI_VERIFY10                   0x2F
#define SCSI_MODE_SELECT10              0x55
#define SCSI_MODE_SENSE10               0x5A


typedef struct usb_storage_cbw_t usb_storage_cbw;
struct usb_storage_cbw_t {
  u32 dCBWSignature;
  u32 dCBWTag;
  u32 dCBWDataTransferLength;
  u8  bCWDFlags;
  u8  bCBWLun;
  u8  bCBWCBLength;
  u8  CBWCB[16];
};

typedef struct usb_storage_csw_t usb_storage_csw;
struct usb_storage_csw_t {
  u32 dCSWSignature;
  u32 dCSWTag;
  u32 dCSWDataResidue;
  u8  bCSWStatus;
};






void usb_storage_init();

u8 usb_storage_open(u8 device);

u8 usb_storage_read_capacity(u8 device);
u8 usb_storage_inquiry(u8 device);
u8 usb_storage_read_sector(u8 device, u32 sector, char * buf);
u8 usb_storage_write_sector(u8 device, u32 sector, char * buf);