void
udfu_parse_desc(struct udfu_softc *sc)
{
struct dfu_functional_descriptor *dd;
const usb_descriptor_t *desc;
struct usbd_desc_iter iter;
usbd_desc_iter_init(sc->sc_udev, &iter);
while ((desc = usbd_desc_iter_next(&iter))) {
if (desc->bDescriptorType == UDESC_CS_DEVICE)
break;
}
if (!desc)
return;
dd = (struct dfu_functional_descriptor *)desc;
DPRINTF(("%s: %s: bLength=%d bDescriptorType=%d bmAttributes=%d "
"wDetachTimeOut=%d wTransferSize=%d bcdDFUVersion=%d\n",
sc->sc_dev.dv_xname, __func__, dd->bLength,
dd->bDescriptorType, dd->bmAttributes,
UGETW(dd->wDetachTimeOut), UGETW(dd->wTransferSize),
UGETW(dd->bcdDFUVersion)));
sc->sc_will_detach = dd->bmAttributes & BWILLDETACH;
sc->sc_detach_timeout = UGETW(dd->wDetachTimeOut);
}
void
umodem_get_caps(struct usb_attach_arg *uaa, int ctl_iface_no,
int *data_iface_idx, int *cm_cap, int *acm_cap)
{
const usb_descriptor_t *desc;
const usb_interface_descriptor_t *id;
const struct usb_cdc_cm_descriptor *cmd;
const struct usb_cdc_acm_descriptor *acmd;
const struct usb_cdc_union_descriptor *uniond;
struct usbd_desc_iter iter;
int current_iface_no = -1;
int data_iface_no = -1;
int i;
*data_iface_idx = -1;
*cm_cap = *acm_cap = 0;
usbd_desc_iter_init(uaa->device, &iter);
desc = usbd_desc_iter_next(&iter);
while (desc) {
if (desc->bDescriptorType == UDESC_INTERFACE) {
id = (usb_interface_descriptor_t *)desc;
current_iface_no = id->bInterfaceNumber;
if (current_iface_no != ctl_iface_no &&
id->bInterfaceClass == UICLASS_CDC_DATA &&
id->bInterfaceSubClass == UISUBCLASS_DATA &&
data_iface_no == -1)
data_iface_no = current_iface_no;
}
if (current_iface_no == ctl_iface_no &&
desc->bDescriptorType == UDESC_CS_INTERFACE) {
switch(desc->bDescriptorSubtype) {
case UDESCSUB_CDC_CM:
cmd = (struct usb_cdc_cm_descriptor *)desc;
*cm_cap = cmd->bmCapabilities;
data_iface_no = cmd->bDataInterface;
break;
case UDESCSUB_CDC_ACM:
acmd = (struct usb_cdc_acm_descriptor *)desc;
*acm_cap = acmd->bmCapabilities;
break;
case UDESCSUB_CDC_UNION:
uniond =
(struct usb_cdc_union_descriptor *)desc;
data_iface_no = uniond->bSlaveInterface[0];
break;
}
}
desc = usbd_desc_iter_next(&iter);
}
/*
* If we got a data interface number, make sure the corresponding
* interface exists and is not already claimed.
*/
if (data_iface_no != -1) {
for (i = 0; i < uaa->nifaces; i++) {
id = usbd_get_interface_descriptor(uaa->ifaces[i]);
if (id == NULL)
continue;
if (id->bInterfaceNumber == data_iface_no) {
if (!usbd_iface_claimed(uaa->device, i))
*data_iface_idx = i;
break;
}
}
}
}
