Exemplo n.º 1
0
static inline char mon_text_get_setup(struct mon_event_text *ep,
    struct urb *urb, char ev_type)
{

	if (!usb_pipecontrol(urb->pipe) || ev_type != 'S')
		return '-';

	if (urb->transfer_flags & URB_NO_SETUP_DMA_MAP)
		return mon_dmapeek(ep->setup, urb->setup_dma, SETUP_MAX);
	if (urb->setup_packet == NULL)
		return 'Z';	/* '0' would be not as pretty. */

	memcpy(ep->setup, urb->setup_packet, SETUP_MAX);
	return 0;
}
Exemplo n.º 2
0
static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb,
    int len, char ev_type)
{
	int pipe = urb->pipe;

	if (len <= 0)
		return 'L';
	if (len >= DATA_MAX)
		len = DATA_MAX;

	/*
	 * Bulk is easy to shortcut reliably. 
	 * XXX Other pipe types need consideration. Currently, we overdo it
	 * and collect garbage for them: better more than less.
	 */
	if (usb_pipebulk(pipe) || usb_pipecontrol(pipe)) {
		if (usb_pipein(pipe)) {
			if (ev_type == 'S')
				return '<';
		} else {
			if (ev_type == 'C')
				return '>';
		}
	}

	/*
	 * The check to see if it's safe to poke at data has an enormous
	 * number of corner cases, but it seems that the following is
	 * more or less safe.
	 *
	 * We do not even try to look transfer_buffer, because it can
	 * contain non-NULL garbage in case the upper level promised to
	 * set DMA for the HCD.
	 */
	if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
		return mon_dmapeek(ep->data, urb->transfer_dma, len);

	if (urb->transfer_buffer == NULL)
		return 'Z';	/* '0' would be not as pretty. */

	memcpy(ep->data, urb->transfer_buffer, len);
	return 0;
}
Exemplo n.º 3
0
static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb,
    int len, char ev_type, struct mon_bus *mbus)
{
	if (len <= 0)
		return 'L';
	if (len >= DATA_MAX)
		len = DATA_MAX;

	if (ep->is_in) {
		if (ev_type != 'C')
			return '<';
	} else {
		if (ev_type != 'S')
			return '>';
	}

	/*
	 * The check to see if it's safe to poke at data has an enormous
	 * number of corner cases, but it seems that the following is
	 * more or less safe.
	 *
	 * We do not even try to look at transfer_buffer, because it can
	 * contain non-NULL garbage in case the upper level promised to
	 * set DMA for the HCD.
	 */
	if (urb->dev->bus->uses_dma &&
	    (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) {
		return mon_dmapeek(ep->data, urb->transfer_dma, len);
	}

	if (urb->transfer_buffer == NULL)
		return 'Z';	/* '0' would be not as pretty. */

	memcpy(ep->data, urb->transfer_buffer, len);
	return 0;
}