// Configure a usb msc device.
int
usb_msc_setup(struct usbdevice_s *usbdev)
{
if (!CONFIG_USB_MSC)
return -1;
// Verify right kind of device
struct usb_interface_descriptor *iface = usbdev->iface;
if ((iface->bInterfaceSubClass != US_SC_SCSI &&
iface->bInterfaceSubClass != US_SC_ATAPI_8070 &&
iface->bInterfaceSubClass != US_SC_ATAPI_8020)
|| iface->bInterfaceProtocol != US_PR_BULK) {
dprintf(1, "Unsupported MSC USB device (subclass=%02x proto=%02x)\n"
, iface->bInterfaceSubClass, iface->bInterfaceProtocol);
return -1;
}
// Find bulk in and bulk out endpoints.
struct usb_pipe *inpipe = NULL, *outpipe = NULL;
struct usb_endpoint_descriptor *indesc = usb_find_desc(
usbdev, USB_ENDPOINT_XFER_BULK, USB_DIR_IN);
struct usb_endpoint_descriptor *outdesc = usb_find_desc(
usbdev, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT);
if (!indesc || !outdesc)
goto fail;
inpipe = usb_alloc_pipe(usbdev, indesc);
outpipe = usb_alloc_pipe(usbdev, outdesc);
if (!inpipe || !outpipe)
goto fail;
int maxlun = usb_msc_maxlun(usbdev->defpipe);
int lun, pipesused = 0;
for (lun = 0; lun < maxlun + 1; lun++) {
int ret = usb_msc_lun_setup(inpipe, outpipe, usbdev, lun);
if (!ret)
pipesused = 1;
}
if (!pipesused)
goto fail;
return 0;
fail:
dprintf(1, "Unable to configure USB MSC device.\n");
usb_free_pipe(usbdev, inpipe);
usb_free_pipe(usbdev, outpipe);
return -1;
}
/* same as usb_find_desc(), but searches only in the specified interface. */
const usb_cdc_descriptor_t *
usb_find_desc_if(usbd_device_handle dev, int type, int subtype,
usb_interface_descriptor_t *id)
{
usbd_desc_iter_t iter;
const usb_cdc_descriptor_t *desc;
if (id == NULL)
return usb_find_desc(dev, type, subtype);
usb_desc_iter_init(dev, &iter);
iter.cur = (void *)id; /* start from the interface desc */
usb_desc_iter_next(&iter); /* and skip it */
while ((desc = (const usb_cdc_descriptor_t *)usb_desc_iter_next(&iter))
!= NULL) {
if (desc->bDescriptorType == UDESC_INTERFACE) {
/* we ran into the next interface --- not found */
return NULL;
}
if (desc->bDescriptorType == type &&
(subtype == USBD_CDCSUBTYPE_ANY ||
subtype == desc->bDescriptorSubtype))
break;
}
return desc;
}
// Initialize a found USB HID device (if applicable).
int
usb_hid_setup(struct usbdevice_s *usbdev)
{
if (! CONFIG_USB_KEYBOARD && ! CONFIG_USB_MOUSE)
return -1;
dprintf(2, "usb_hid_setup %p\n", usbdev->defpipe);
struct usb_interface_descriptor *iface = usbdev->iface;
if (iface->bInterfaceSubClass != USB_INTERFACE_SUBCLASS_BOOT)
// Doesn't support boot protocol.
return -1;
// Find intr in endpoint.
struct usb_endpoint_descriptor *epdesc = usb_find_desc(
usbdev, USB_ENDPOINT_XFER_INT, USB_DIR_IN);
if (!epdesc) {
dprintf(1, "No usb hid intr in?\n");
return -1;
}
if (iface->bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD)
return usb_kbd_setup(usbdev, epdesc);
if (iface->bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE)
return usb_mouse_setup(usbdev, epdesc);
return -1;
}
