static void
ugen_default_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct usb_fifo *f = usbd_xfer_softc(xfer);
struct usb_mbuf *m;
DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
if (xfer->actlen == 0) {
if (f->fifo_zlp != 4) {
f->fifo_zlp++;
} else {
/*
* Throttle a little bit we have multiple ZLPs
* in a row!
*/
xfer->interval = 64; /* ms */
}
} else {
/* clear throttle */
xfer->interval = 0;
f->fifo_zlp = 0;
}
usb_fifo_put_data(f, xfer->frbuffers, 0,
xfer->actlen, 1);
case USB_ST_SETUP:
if (f->flag_stall) {
usbd_transfer_start(f->xfer[1]);
break;
}
USB_IF_POLL(&f->free_q, m);
if (m) {
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
usbd_transfer_submit(xfer);
}
break;
default: /* Error */
if (xfer->error != USB_ERR_CANCELLED) {
/* send a zero length packet to userland */
usb_fifo_put_data(f, xfer->frbuffers, 0, 0, 1);
f->flag_stall = 1;
f->fifo_zlp = 0;
usbd_transfer_start(f->xfer[1]);
}
break;
}
}
static void
ugen_isoc_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct usb_fifo *f = usbd_xfer_softc(xfer);
usb_frlength_t offset;
usb_frcount_t n;
DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
DPRINTFN(6, "actlen=%d\n", xfer->actlen);
offset = 0;
for (n = 0; n != xfer->aframes; n++) {
usb_fifo_put_data(f, xfer->frbuffers, offset,
xfer->frlengths[n], 1);
offset += xfer->max_frame_size;
}
case USB_ST_SETUP:
tr_setup:
for (n = 0; n != xfer->nframes; n++) {
/* setup size for next transfer */
usbd_xfer_set_frame_len(xfer, n, xfer->max_frame_size);
}
usbd_transfer_submit(xfer);
break;
default: /* Error */
if (xfer->error == USB_ERR_CANCELLED) {
break;
}
goto tr_setup;
}
}
static void
uhid_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct uhid_softc *sc = usbd_xfer_softc(xfer);
struct usb_device_request req;
struct usb_page_cache *pc;
pc = usbd_xfer_get_frame(xfer, 0);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
usb_fifo_put_data(sc->sc_fifo.fp[USB_FIFO_RX], pc, sizeof(req),
sc->sc_isize, 1);
return;
case USB_ST_SETUP:
if (usb_fifo_put_bytes_max(sc->sc_fifo.fp[USB_FIFO_RX]) > 0) {
uhid_fill_get_report
(&req, sc->sc_iface_no, UHID_INPUT_REPORT,
sc->sc_iid, sc->sc_isize);
usbd_copy_in(pc, 0, &req, sizeof(req));
usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
usbd_xfer_set_frame_len(xfer, 1, sc->sc_isize);
usbd_xfer_set_frames(xfer, sc->sc_isize ? 2 : 1);
usbd_transfer_submit(xfer);
}
return;
default: /* Error */
/* bomb out */
usb_fifo_put_data_error(sc->sc_fifo.fp[USB_FIFO_RX]);
return;
}
}
