132 lines
5.8 KiB
C
132 lines
5.8 KiB
C
/************************************************************************************
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* include/nuttx/usb/storage.h
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*
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* Copyright (C) 2008-2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* References:
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* "Universal Serial Bus Mass Storage Class, Specification Overview,"
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* Revision 1.2, USB Implementer's Forum, June 23, 2003.
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*
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* "Universal Serial Bus Mass Storage Class, Bulk-Only Transport,"
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* Revision 1.0, USB Implementer's Forum, September 31, 1999.
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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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* 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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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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
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __INCLUDE_NUTTX_USB_STORAGE_H
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#define __INCLUDE_NUTTX_USB_STORAGE_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* Mass storage requests */
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#define USBMSC_TYPE_SETUPIN (USB_DIR_IN|USB_REQ_TYPE_CLASS|USB_REQ_RECIPIENT_INTERFACE)
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#define USBMSC_TYPE_SETUPOUT (USB_DIR_OUT|USB_REQ_TYPE_CLASS|USB_REQ_RECIPIENT_INTERFACE)
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#define USBMSC_REQ_MSRESET (0xff) /* Reset mass storage device and interface */
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#define USBMSC_REQ_GETMAXLUN (0xfe) /* Return number LUNs supported */
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/* Mass storage subclass codes */
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#define USBMSC_SUBCLASS_RBC (0x01) /* Reduced block commands (e.g., flash devices) */
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#define USBMSC_SUBCLASS_SFF1 (0x02) /* SFF-8020i/MMC-2 (ATAPI) (e.g., C/DVD) */
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#define USBMSC_SUBCLASS_QIC (0x03) /* QIC-157 (e.g., tape device) */
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#define USBMSC_SUBCLASS_UFI (0x04) /* e.g. floppy device */
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#define USBMSC_SUBCLASS_SFF2 (0x05) /* SFF-8070i (e.g. floppy disk) */
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#define USBMSC_SUBCLASS_SCSI (0x06) /* SCSI transparent */
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/* Mass storage transport protocols */
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#define USBMSC_PROTO_CBI0 (0x00) /* CBI transport with command completion interrupt */
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#define USBMSC_PROTO_CBI1 (0x01) /* CBI transport without command completion interrupt */
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#define USBMSC_PROTO_BULKONLY (0x50) /* Bulk only transport */
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/* Common Block Wrapper (CBW) */
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#define USBMSC_CBW_SIZEOF (31)
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#define USBMSC_CBW_SIGNATURE (0x43425355) /* Little endian USBC */
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#define USBMSC_CBWFLAG_IN (0x80) /* Bit 7=1: Direction = IN */
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#define USBMSC_MAXCDBLEN (16) /* Max length of SCSI Command Data Block */
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/* Command Status Wrapper (CSW) */
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#define USBMSC_CSW_SIZEOF (13)
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#define USBMSC_CSW_SIGNATURE (0x53425355) /* Little endian 'USBS' */
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#define USBMSC_CSWSTATUS_PASS (0)
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#define USBMSC_CSWSTATUS_FAIL (1)
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#define USBMSC_CSWSTATUS_PHASEERROR (2)
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/************************************************************************************
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* Public Types
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************************************************************************************/
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/* Command Block Wrapper (CBW) */
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struct usbmsc_cbw_s
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{
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uint8_t signature[4]; /* 'USBC' = 0x43425355 */
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uint8_t tag[4]; /* Depends on command id */
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uint8_t datlen[4]; /* Number of bytes that host expects to transfer */
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uint8_t flags; /* Bit 7: Direction=IN (other obsolete or reserved) */
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uint8_t lun; /* LUN (normally 0) */
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uint8_t cdblen; /* len of cdb[] */
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uint8_t cdb[USBMSC_MAXCDBLEN]; /* Command Data Block */
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};
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/* Command Status Wrapper (CSW) */
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struct usbmsc_csw_s
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{
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uint8_t signature[4]; /* 'USBS' = 0x53425355 */
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uint8_t tag[4]; /* Same tag as original command */
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uint8_t residue[4]; /* Amount not transferred */
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uint8_t status; /* Status of transfer */
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};
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/************************************************************************************
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* Public Data
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************************************************************************************/
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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#endif /* __INCLUDE_NUTTX_USB_STORAGE_H */
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