dev/usb/usb_handle_request.c

88 usb_handle_request_callback(struct usb_xfer *xfer, usb_error_t error)
94 	switch (USB_GET_STATE(xfer)) {
99 		err = usb_handle_request(xfer);
105 				usb_needs_explore(xfer->xroot->bus, 0);
110 		usbd_transfer_submit(xfer);
115 		if (xfer->flags_int.control_rem != 0xFFFF) {
117 			err = usb_handle_request(xfer);
119 		if (xfer->error != USB_ERR_CANCELLED) {
132 	usbd_xfer_set_frame_len(xfer, 0, sizeof(struct usb_device_request));
133 	xfer->nframes = 1;
134 	xfer->flags.manual_status = 1;
135 	xfer->flags.force_short_xfer = 0;
136 	usbd_xfer_set_stall(xfer);	/* cancel previous transfer, if any */
137 	usbd_transfer_submit(xfer);
148 usb_handle_set_config(struct usb_xfer *xfer, uint8_t conf_no)
150 	struct usb_device *udev = xfer->xroot->udev;
158 	USB_XFER_UNLOCK(xfer);
186 	USB_XFER_LOCK(xfer);
217 usb_handle_iface_request(struct usb_xfer *xfer,
223 	struct usb_device *udev = xfer->xroot->udev;
239 	USB_XFER_UNLOCK(xfer);
360 	USB_XFER_LOCK(xfer);
366 	USB_XFER_LOCK(xfer);
372 	USB_XFER_LOCK(xfer);
384 usb_handle_set_stall(struct usb_xfer *xfer, uint8_t ep, uint8_t do_stall)
386 	struct usb_device *udev = xfer->xroot->udev;
389 	USB_XFER_UNLOCK(xfer);
392 	USB_XFER_LOCK(xfer);
429 usb_handle_remote_wakeup(struct usb_xfer *xfer, uint8_t is_on)
434 	udev = xfer->xroot->udev;
466 usb_handle_request(struct usb_xfer *xfer)
489 	switch (USB_GET_STATE(xfer)) {
493 		if (!xfer->flags_int.control_act) {
499 		if (!xfer->flags_int.control_act) {
512 	usbd_xfer_set_frame_len(xfer, 0, 0);
514 	usbd_xfer_set_frame_offset(xfer, 0, 0);
515 	usbd_xfer_set_frame_offset(xfer, sizeof(req), 1);
519 	usbd_copy_out(xfer->frbuffers, 0, &req, sizeof(req));
521 	if (xfer->flags_int.control_rem == 0xFFFF) {
527 		rem = xfer->flags_int.control_rem;
536 	udev = xfer->xroot->udev;
625 		err = usb_handle_iface_request(xfer,
699 		if (usb_handle_set_config(xfer, req.wValue[0])) {
707 		if (usb_handle_set_stall(xfer, req.wIndex[0], 0)) {
715 		if (usb_handle_remote_wakeup(xfer, 0)) {
723 		if (usb_handle_set_stall(xfer, req.wIndex[0], 1)) {
731 		if (usb_handle_remote_wakeup(xfer, 1)) {
757 	if (max_len > xfer->max_data_length) {
758 		max_len = usbd_xfer_max_len(xfer);
768 	if (rem > xfer->max_data_length) {
769 		rem = usbd_xfer_max_len(xfer);
776 		xfer->flags.force_short_xfer = 1;
777 		xfer->nframes = 2;
782 		xfer->flags.force_short_xfer = 0;
783 		xfer->nframes = max_len ? 2 : 1;
788 			usbd_copy_in(xfer->frbuffers + 1, 0,
790 			usbd_xfer_set_frame_len(xfer, 1, max_len);
792 			usbd_xfer_set_frame_data(xfer, 1,
797 		xfer->flags.manual_status = 0;
798 		usbd_xfer_set_frame_len(xfer, 1, 0);