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px4_autopilot/nuttx/drivers/usbdev/usbmsc_desc.c

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/****************************************************************************
* drivers/usbdev/usbmsc_desc.c
*
* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name NuttX 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/usb/usb.h>
#include <nuttx/usb/usbdev_trace.h>
#include "usbmsc.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/* Descriptors **************************************************************/
/* Device descriptor. If the USB mass storage device is configured as part
* of a composite device, then the device descriptor will be provided by the
* composite device logic.
*/
#ifndef CONFIG_USBMSC_COMPOSITE
static const struct usb_devdesc_s g_devdesc =
{
USB_SIZEOF_DEVDESC, /* len */
USB_DESC_TYPE_DEVICE, /* type */
{LSBYTE(0x0200), MSBYTE(0x0200)}, /* usb */
USB_CLASS_PER_INTERFACE, /* classid */
0, /* subclass */
0, /* protocol */
CONFIG_USBMSC_EP0MAXPACKET, /* maxpacketsize */
{ /* vendor */
LSBYTE(CONFIG_USBMSC_VENDORID),
MSBYTE(CONFIG_USBMSC_VENDORID)
},
{ /* product */
LSBYTE(CONFIG_USBMSC_PRODUCTID),
MSBYTE(CONFIG_USBMSC_PRODUCTID) },
{ /* device */
LSBYTE(CONFIG_USBMSC_VERSIONNO),
MSBYTE(CONFIG_USBMSC_VERSIONNO)
},
USBMSC_MANUFACTURERSTRID, /* imfgr */
USBMSC_PRODUCTSTRID, /* iproduct */
USBMSC_SERIALSTRID, /* serno */
USBMSC_NCONFIGS /* nconfigs */
};
#endif
/* Configuration descriptor If the USB mass storage device is configured as part
* of a composite device, then the configuration descriptor will be provided by the
* composite device logic.
*/
#ifndef CONFIG_USBMSC_COMPOSITE
static const struct usb_cfgdesc_s g_cfgdesc =
{
USB_SIZEOF_CFGDESC, /* len */
USB_DESC_TYPE_CONFIG, /* type */
{ /* totallen */
LSBYTE(SIZEOF_USBMSC_CFGDESC),
MSBYTE(SIZEOF_USBMSC_CFGDESC)
},
USBMSC_NINTERFACES, /* ninterfaces */
USBMSC_CONFIGID, /* cfgvalue */
USBMSC_CONFIGSTRID, /* icfg */
USB_CONFIG_ATTR_ONE|SELFPOWERED|REMOTEWAKEUP, /* attr */
(CONFIG_USBDEV_MAXPOWER + 1) / 2 /* mxpower */
};
#endif
/* Single interface descriptor */
static const struct usb_ifdesc_s g_ifdesc =
{
USB_SIZEOF_IFDESC, /* len */
USB_DESC_TYPE_INTERFACE, /* type */
USBMSC_INTERFACEID, /* ifno */
USBMSC_ALTINTERFACEID, /* alt */
USBMSC_NENDPOINTS, /* neps */
USB_CLASS_MASS_STORAGE, /* classid */
USBMSC_SUBCLASS_SCSI, /* subclass */
USBMSC_PROTO_BULKONLY, /* protocol */
USBMSC_INTERFACESTRID /* iif */
};
/* Endpoint descriptors */
static const struct usb_epdesc_s g_fsepbulkoutdesc =
{
USB_SIZEOF_EPDESC, /* len */
USB_DESC_TYPE_ENDPOINT, /* type */
USBMSC_EPOUTBULK_ADDR, /* addr */
USBMSC_EPOUTBULK_ATTR, /* attr */
{ /* maxpacket */
LSBYTE(USBMSC_FSBULKMAXPACKET),
MSBYTE(USBMSC_FSBULKMAXPACKET)
},
0 /* interval */
};
static const struct usb_epdesc_s g_fsepbulkindesc =
{
USB_SIZEOF_EPDESC, /* len */
USB_DESC_TYPE_ENDPOINT, /* type */
USBMSC_EPINBULK_ADDR, /* addr */
USBMSC_EPINBULK_ATTR, /* attr */
{ /* maxpacket */
LSBYTE(USBMSC_FSBULKMAXPACKET),
MSBYTE(USBMSC_FSBULKMAXPACKET)
},
0 /* interval */
};
#ifdef CONFIG_USBDEV_DUALSPEED
#ifndef CONFIG_USBMSC_COMPOSITE
static const struct usb_qualdesc_s g_qualdesc =
{
USB_SIZEOF_QUALDESC, /* len */
USB_DESC_TYPE_DEVICEQUALIFIER, /* type */
{ /* usb */
LSBYTE(0x0200),
MSBYTE(0x0200)
},
USB_CLASS_PER_INTERFACE, /* classid */
0, /* subclass */
0, /* protocol */
CONFIG_USBMSC_EP0MAXPACKET, /* mxpacketsize */
USBMSC_NCONFIGS, /* nconfigs */
0, /* reserved */
};
#endif
static const struct usb_epdesc_s g_hsepbulkoutdesc =
{
USB_SIZEOF_EPDESC, /* len */
USB_DESC_TYPE_ENDPOINT, /* type */
USBMSC_EPOUTBULK_ADDR, /* addr */
USBMSC_EPOUTBULK_ATTR, /* attr */
{ /* maxpacket */
LSBYTE(USBMSC_HSBULKMAXPACKET),
MSBYTE(USBMSC_HSBULKMAXPACKET)
},
0 /* interval */
};
static const struct usb_epdesc_s g_hsepbulkindesc =
{
USB_SIZEOF_EPDESC, /* len */
USB_DESC_TYPE_ENDPOINT, /* type */
USBMSC_EPINBULK_ADDR, /* addr */
USBMSC_EPINBULK_ATTR, /* attr */
{ /* maxpacket */
LSBYTE(USBMSC_HSBULKMAXPACKET),
MSBYTE(USBMSC_HSBULKMAXPACKET)
},
0 /* interval */
};
#endif
/****************************************************************************
* Public Data
****************************************************************************/
/* Strings ******************************************************************/
#ifndef CONFIG_USBMSC_COMPOSITE
const char g_mscvendorstr[] = CONFIG_USBMSC_VENDORSTR;
const char g_mscproductstr[] = CONFIG_USBMSC_PRODUCTSTR;
const char g_mscserialstr[] = CONFIG_USBMSC_SERIALSTR;
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: usbmsc_mkstrdesc
*
* Description:
* Construct a string descriptor
*
****************************************************************************/
int usbmsc_mkstrdesc(uint8_t id, struct usb_strdesc_s *strdesc)
{
const char *str;
int len;
int ndata;
int i;
switch (id)
{
#ifndef CONFIG_USBMSC_COMPOSITE
case 0:
{
/* Descriptor 0 is the language id */
strdesc->len = 4;
strdesc->type = USB_DESC_TYPE_STRING;
strdesc->data[0] = LSBYTE(USBMSC_STR_LANGUAGE);
strdesc->data[1] = MSBYTE(USBMSC_STR_LANGUAGE);
return 4;
}
case USBMSC_MANUFACTURERSTRID:
str = g_mscvendorstr;
break;
case USBMSC_PRODUCTSTRID:
str = g_mscproductstr;
break;
case USBMSC_SERIALSTRID:
str = g_mscserialstr;
break;
#endif
/* case USBMSC_CONFIGSTRID: */
case USBMSC_INTERFACESTRID:
str = CONFIG_USBMSC_CONFIGSTR;
break;
default:
return -EINVAL;
}
/* The string is utf16-le. The poor man's utf-8 to utf16-le
* conversion below will only handle 7-bit en-us ascii
*/
len = strlen(str);
for (i = 0, ndata = 0; i < len; i++, ndata += 2)
{
strdesc->data[ndata] = str[i];
strdesc->data[ndata+1] = 0;
}
strdesc->len = ndata+2;
strdesc->type = USB_DESC_TYPE_STRING;
return strdesc->len;
}
/****************************************************************************
* Name: usbmsc_getepdesc
*
* Description:
* Return a pointer to the raw device descriptor
*
****************************************************************************/
#ifndef CONFIG_USBMSC_COMPOSITE
FAR const struct usb_devdesc_s *usbmsc_getdevdesc(void)
{
return &g_devdesc;
}
#endif
/****************************************************************************
* Name: usbmsc_getepdesc
*
* Description:
* Return a pointer to the raw endpoint descriptor (used for configuring
* endpoints)
*
****************************************************************************/
FAR const struct usb_epdesc_s *usbmsc_getepdesc(enum usbmsc_epdesc_e epid)
{
switch (epid)
{
case USBMSC_EPFSBULKOUT: /* Full speed bulk OUT endpoint descriptor */
return &g_fsepbulkoutdesc;
case USBMSC_EPFSBULKIN: /* Full speed bulk IN endpoint descriptor */
return &g_fsepbulkindesc;
#ifdef CONFIG_USBDEV_DUALSPEED
case USBMSC_EPHSBULKOUT: /* High speed bulk OUT endpoint descriptor */
return &g_hsepbulkoutdesc;
case USBMSC_EPHSBULKIN: /* High speed bulk IN endpoint descriptor */
return &g_hsepbulkindesc;
#endif
default:
return NULL;
}
};
/****************************************************************************
* Name: usbmsc_mkcfgdesc
*
* Description:
* Construct the configuration descriptor
*
****************************************************************************/
#ifdef CONFIG_USBDEV_DUALSPEED
int16_t usbmsc_mkcfgdesc(uint8_t *buf, uint8_t speed, uint8_t type)
#else
int16_t usbmsc_mkcfgdesc(uint8_t *buf)
#endif
{
#ifdef CONFIG_USBDEV_DUALSPEED
FAR const struct usb_epdesc_s *epdesc;
bool hispeed = (speed == USB_SPEED_HIGH);
uint16_t bulkmxpacket;
#endif
/* Configuration descriptor. If the USB mass storage device is
* configured as part of a composite device, then the configuration
* descriptor will be provided by the composite device logic.
*/
#ifndef CONFIG_USBMSC_COMPOSITE
memcpy(buf, &g_cfgdesc, USB_SIZEOF_CFGDESC);
buf += USB_SIZEOF_CFGDESC;
#endif
/* Copy the canned interface descriptor */
memcpy(buf, &g_ifdesc, USB_SIZEOF_IFDESC);
buf += USB_SIZEOF_IFDESC;
/* Make the two endpoint configurations */
#ifdef CONFIG_USBDEV_DUALSPEED
/* Check for switches between high and full speed */
hispeed = (speed == USB_SPEED_HIGH);
if (type == USB_DESC_TYPE_OTHERSPEEDCONFIG)
{
hispeed = !hispeed;
}
bulkmxpacket = USBMSC_BULKMAXPACKET(hispeed);
epdesc = USBMSC_EPBULKINDESC(hispeed);
memcpy(buf, epdesc, USB_SIZEOF_EPDESC);
buf += USB_SIZEOF_EPDESC;
epdesc = USBMSC_EPBULKOUTDESC(hispeed);
memcpy(buf, epdesc, USB_SIZEOF_EPDESC);
#else
memcpy(buf, &g_fsepbulkoutdesc, USB_SIZEOF_EPDESC);
buf += USB_SIZEOF_EPDESC;
memcpy(buf, &g_fsepbulkindesc, USB_SIZEOF_EPDESC);
#endif
return SIZEOF_USBMSC_CFGDESC;
}
/****************************************************************************
* Name: usbmsc_getqualdesc
*
* Description:
* Return a pointer to the raw qual descriptor
*
****************************************************************************/
#if !defined(CONFIG_USBMSC_COMPOSITE) && defined(CONFIG_USBDEV_DUALSPEED)
FAR const struct usb_qualdesc_s *usbmsc_getqualdesc(void)
{
return &g_qualdesc;
}
#endif