void usbmsc_deferredresponse(FAR struct usbmsc_dev_s *priv, bool failed)
{
FAR struct usbdev_s *dev;
FAR struct usbdev_req_s *ctrlreq;
int ret;
#ifdef CONFIG_DEBUG
if (!priv || !priv->usbdev || !priv->ctrlreq)
{
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_DEFERREDRESPINVALIDARGS), 0);
return;
}
#endif
dev = priv->usbdev;
ctrlreq = priv->ctrlreq;
/* If no error occurs, respond to the deferred setup command with a null
* packet.
*/
if (!failed)
{
ctrlreq->len = 0;
ctrlreq->flags = USBDEV_REQFLAGS_NULLPKT;
ret = EP_SUBMIT(dev->ep0, ctrlreq);
if (ret < 0)
{
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_DEFERREDRESPSUBMIT),
(uint16_t)-ret);
#if 0 /* Not necessary */
ctrlreq->result = OK;
usbmsc_ep0incomplete(dev->ep0, ctrlreq);
#endif
}
}
else
{
/* On a failure, the USB driver will stall. */
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_DEFERREDRESPSTALLED), 0);
EP_STALL(dev->ep0);
}
}
static int usbmsc_setup(FAR struct usbdevclass_driver_s *driver, FAR struct usbdev_s *dev, FAR const struct usb_ctrlreq_s *ctrl, FAR uint8_t *dataout, size_t outlen)
{
FAR struct usbmsc_dev_s *priv;
FAR struct usbdev_req_s *ctrlreq;
uint16_t value;
uint16_t index;
uint16_t len;
int ret = -EOPNOTSUPP;
#ifdef CONFIG_DEBUG
if (!driver || !dev || !dev->ep0 || !ctrl) {
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_SETUPINVALIDARGS), 0);
return -EIO;
}
#endif
/* Extract reference to private data */
usbtrace(TRACE_CLASSSETUP, ctrl->req);
priv = ((FAR struct usbmsc_driver_s *)driver)->dev;
#ifdef CONFIG_DEBUG
if (!priv || !priv->ctrlreq) {
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_EP0NOTBOUND2), 0);
return -ENODEV;
}
#endif
ctrlreq = priv->ctrlreq;
/* Extract the little-endian 16-bit values to host order */
value = GETUINT16(ctrl->value);
index = GETUINT16(ctrl->index);
len = GETUINT16(ctrl->len);
uvdbg("type=%02x req=%02x value=%04x index=%04x len=%04x\n", ctrl->type, ctrl->req, value, index, len);
if ((ctrl->type & USB_REQ_TYPE_MASK) == USB_REQ_TYPE_STANDARD) {
/**********************************************************************
* Standard Requests
**********************************************************************/
switch (ctrl->req) {
case USB_REQ_GETDESCRIPTOR: {
/* The value field specifies the descriptor type in the MS byte and the
* descriptor index in the LS byte (order is little endian)
*/
switch (ctrl->value[1]) {
/* If the mass storage device is used in as part of a composite
* device, then the device descriptor is is provided by logic
* in the composite device implementation.
*/
#ifndef CONFIG_USBMSC_COMPOSITE
case USB_DESC_TYPE_DEVICE: {
ret = USB_SIZEOF_DEVDESC;
memcpy(ctrlreq->buf, usbmsc_getdevdesc(), ret);
}
break;
#endif
/* If the mass storage device is used in as part of a composite device,
* then the device qualifier descriptor is provided by logic in the
* composite device implementation.
*/
#if !defined(CONFIG_USBMSC_COMPOSITE) && defined(CONFIG_USBDEV_DUALSPEED)
case USB_DESC_TYPE_DEVICEQUALIFIER: {
ret = USB_SIZEOF_QUALDESC;
memcpy(ctrlreq->buf, usbmsc_getqualdesc(), ret);
}
break;
case USB_DESC_TYPE_OTHERSPEEDCONFIG:
#endif
/* If the mass storage device is used in as part of a composite device,
* then the configuration descriptor is provided by logic in the
* composite device implementation.
*/
#ifndef CONFIG_USBMSC_COMPOSITE
case USB_DESC_TYPE_CONFIG: {
#ifdef CONFIG_USBDEV_DUALSPEED
ret = usbmsc_mkcfgdesc(ctrlreq->buf, dev->speed, ctrl->value[1]);
#else
ret = usbmsc_mkcfgdesc(ctrlreq->buf);
#endif
}
break;
#endif
/* If the mass storage device is used in as part of a composite device,
* then the language string descriptor is provided by logic in the
* composite device implementation.
*/
#ifndef CONFIG_USBMSC_COMPOSITE
case USB_DESC_TYPE_STRING: {
/* index == language code. */
ret = usbmsc_mkstrdesc(ctrl->value[0], (struct usb_strdesc_s *)ctrlreq->buf);
}
break;
#endif
default: {
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_GETUNKNOWNDESC), value);
}
break;
}
}
break;
case USB_REQ_SETCONFIGURATION: {
if (ctrl->type == 0) {
/* Signal the worker thread to instantiate the new configuration */
priv->theventset |= USBMSC_EVENT_CFGCHANGE;
priv->thvalue = value;
usbmsc_scsi_signal(priv);
/* Return here... the response will be provided later by the
* worker thread.
*/
return OK;
}
}
break;
/* If the mass storage device is used in as part of a composite device,
* then the overall composite class configuration is managed by logic
* in the composite device implementation.
*/
#ifndef CONFIG_USBMSC_COMPOSITE
case USB_REQ_GETCONFIGURATION: {
if (ctrl->type == USB_DIR_IN) {
ctrlreq->buf[0] = priv->config;
ret = 1;
}
}
break;
#endif
case USB_REQ_SETINTERFACE: {
if (ctrl->type == USB_REQ_RECIPIENT_INTERFACE) {
if (priv->config == USBMSC_CONFIGID && index == USBMSC_INTERFACEID && value == USBMSC_ALTINTERFACEID) {
/* Signal to instantiate the interface change */
priv->theventset |= USBMSC_EVENT_IFCHANGE;
usbmsc_scsi_signal(priv);
/* Return here... the response will be provided later by the
* worker thread.
*/
return OK;
}
}
}
break;
case USB_REQ_GETINTERFACE: {
if (ctrl->type == (USB_DIR_IN | USB_REQ_RECIPIENT_INTERFACE) && priv->config == USBMSC_CONFIGIDNONE) {
if (index != USBMSC_INTERFACEID) {
ret = -EDOM;
} else {
ctrlreq->buf[0] = USBMSC_ALTINTERFACEID;
ret = 1;
}
}
}
break;
default:
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_UNSUPPORTEDSTDREQ), ctrl->req);
break;
}
} else if ((ctrl->type & USB_REQ_TYPE_MASK) == USB_REQ_TYPE_CLASS) {
/**********************************************************************
* Bulk-Only Mass Storage Class Requests
**********************************************************************/
/* Verify that we are configured */
if (!priv->config) {
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_NOTCONFIGURED), 0);
return ret;
}
switch (ctrl->req) {
case USBMSC_REQ_MSRESET: { /* Reset mass storage device and interface */
if (ctrl->type == USBMSC_TYPE_SETUPOUT && value == 0 && len == 0) {
/* Only one interface is supported */
if (index != USBMSC_INTERFACEID) {
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_MSRESETNDX), index);
ret = -EDOM;
} else {
/* Signal to stop the current operation and reinitialize state */
priv->theventset |= USBMSC_EVENT_RESET;
usbmsc_scsi_signal(priv);
/* Return here... the response will be provided later by the
* worker thread.
*/
return OK;
}
}
}
break;
case USBMSC_REQ_GETMAXLUN: { /* Return number LUNs supported */
if (ctrl->type == USBMSC_TYPE_SETUPIN && value == 0 && len == 1) {
/* Only one interface is supported */
if (index != USBMSC_INTERFACEID) {
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_GETMAXLUNNDX), index);
ret = -EDOM;
} else {
ctrlreq->buf[0] = priv->nluns - 1;
ret = 1;
}
}
}
break;
default:
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_BADREQUEST), ctrl->req);
break;
}
} else {
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_UNSUPPORTEDTYPE), ctrl->type);
}
/* Respond to the setup command if data was returned. On an error return
* value (ret < 0), the USB driver will stall EP0.
*/
if (ret >= 0) {
/* Configure the response */
ctrlreq->len = MIN(len, ret);
ctrlreq->flags = USBDEV_REQFLAGS_NULLPKT;
/* Send the response -- either directly to the USB controller or
* indirectly in the case where this class is a member of a composite
* device.
*/
#ifndef CONFIG_USBMSC_COMPOSITE
ret = EP_SUBMIT(dev->ep0, ctrlreq);
#else
ret = composite_ep0submit(driver, dev, ctrlreq);
#endif
if (ret < 0) {
usbtrace(TRACE_CLSERROR(USBMSC_TRACEERR_EPRESPQ), (uint16_t)-ret);
#if 0 /* Not necessary */
ctrlreq->result = OK;
usbmsc_ep0incomplete(dev->ep0, ctrlreq);
#endif
}
}
return ret;
}
