usbd_status
usbd_read_report_desc(struct usbd_interface *ifc, void **descp, int *sizep)
{
usb_interface_descriptor_t *id;
usb_hid_descriptor_t *hid;
struct usbd_device *dev;
usbd_status err;
usbd_interface2device_handle(ifc, &dev);
id = usbd_get_interface_descriptor(ifc);
if (id == NULL)
return USBD_INVAL;
hid = usbd_get_hid_descriptor(ifc);
if (hid == NULL)
return USBD_IOERROR;
*sizep = UGETW(hid->descrs[0].wDescriptorLength);
*descp = kmem_alloc(*sizep, KM_SLEEP);
if (*descp == NULL)
return USBD_NOMEM;
err = usbd_get_report_descriptor(dev, id->bInterfaceNumber,
*sizep, *descp);
if (err) {
kmem_free(*descp, *sizep);
*descp = NULL;
return err;
}
return USBD_NORMAL_COMPLETION;
}
usbd_status
usbd_read_report_desc(usbd_interface_handle ifc, void **descp, int *sizep,
struct malloc_type * mem)
{
usb_interface_descriptor_t *id;
usb_hid_descriptor_t *hid;
usbd_device_handle dev;
usbd_status err;
usbd_interface2device_handle(ifc, &dev);
id = usbd_get_interface_descriptor(ifc);
if (id == NULL)
return (USBD_INVAL);
hid = usbd_get_hid_descriptor(ifc);
if (hid == NULL)
return (USBD_IOERROR);
*sizep = UGETW(hid->descrs[0].wDescriptorLength);
*descp = malloc(*sizep, mem, M_NOWAIT);
if (*descp == NULL)
return (USBD_NOMEM);
err = usbd_get_report_descriptor(dev, id->bInterfaceNumber,
*sizep, *descp);
if (err) {
free(*descp, mem);
*descp = NULL;
return (err);
}
return (USBD_NORMAL_COMPLETION);
}
void
uhidev_attach(struct device *parent, struct device *self, void *aux)
{
struct uhidev_softc *sc = (struct uhidev_softc *)self;
struct usb_attach_arg *uaa = aux;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
struct uhidev_attach_arg uha;
int size, nrepid, repid, repsz;
int i, repsizes[256];
void *desc = NULL;
struct device *dev;
sc->sc_udev = uaa->device;
sc->sc_iface = uaa->iface;
sc->sc_ifaceno = uaa->ifaceno;
id = usbd_get_interface_descriptor(sc->sc_iface);
usbd_set_idle(sc->sc_udev, sc->sc_ifaceno, 0, 0);
sc->sc_iep_addr = sc->sc_oep_addr = -1;
for (i = 0; i < id->bNumEndpoints; i++) {
ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
if (ed == NULL) {
printf("%s: could not read endpoint descriptor\n",
DEVNAME(sc));
return;
}
DPRINTFN(10,("uhidev_attach: bLength=%d bDescriptorType=%d "
"bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
" bInterval=%d\n",
ed->bLength, ed->bDescriptorType,
ed->bEndpointAddress & UE_ADDR,
UE_GET_DIR(ed->bEndpointAddress)==UE_DIR_IN? "in" : "out",
ed->bmAttributes & UE_XFERTYPE,
UGETW(ed->wMaxPacketSize), ed->bInterval));
if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
(ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) {
sc->sc_iep_addr = ed->bEndpointAddress;
} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
(ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) {
sc->sc_oep_addr = ed->bEndpointAddress;
} else {
printf("%s: unexpected endpoint\n", DEVNAME(sc));
return;
}
}
/*
* Check that we found an input interrupt endpoint.
* The output interrupt endpoint is optional
*/
if (sc->sc_iep_addr == -1) {
printf("%s: no input interrupt endpoint\n", DEVNAME(sc));
return;
}
#ifndef SMALL_KERNEL
if (uhidev_use_rdesc(sc, id, uaa->vendor, uaa->product, &desc, &size))
return;
#endif /* !SMALL_KERNEL */
if (desc == NULL) {
struct usb_hid_descriptor *hid;
hid = usbd_get_hid_descriptor(sc->sc_udev, id);
if (hid == NULL) {
printf("%s: no HID descriptor\n", DEVNAME(sc));
return;
}
size = UGETW(hid->descrs[0].wDescriptorLength);
desc = malloc(size, M_USBDEV, M_NOWAIT);
if (desc == NULL) {
printf("%s: no memory\n", DEVNAME(sc));
return;
}
if (usbd_get_report_descriptor(sc->sc_udev, sc->sc_ifaceno,
desc, size)) {
printf("%s: no report descriptor\n", DEVNAME(sc));
free(desc, M_USBDEV, 0);
return;
}
}
sc->sc_repdesc = desc;
sc->sc_repdesc_size = size;
nrepid = uhidev_maxrepid(desc, size);
if (nrepid < 0)
return;
printf("%s: iclass %d/%d", DEVNAME(sc), id->bInterfaceClass,
id->bInterfaceSubClass);
if (nrepid > 0)
printf(", %d report id%s", nrepid, nrepid > 1 ? "s" : "");
printf("\n");
nrepid++;
sc->sc_subdevs = mallocarray(nrepid, sizeof(struct uhidev *),
M_USBDEV, M_NOWAIT | M_ZERO);
if (sc->sc_subdevs == NULL) {
printf("%s: no memory\n", DEVNAME(sc));
return;
}
sc->sc_nrepid = nrepid;
sc->sc_isize = 0;
for (repid = 0; repid < nrepid; repid++) {
repsz = hid_report_size(desc, size, hid_input, repid);
DPRINTF(("uhidev_match: repid=%d, repsz=%d\n", repid, repsz));
repsizes[repid] = repsz;
if (repsz > sc->sc_isize)
sc->sc_isize = repsz;
}
sc->sc_isize += (nrepid != 1); /* one byte for the report ID */
DPRINTF(("uhidev_attach: isize=%d\n", sc->sc_isize));
uha.uaa = uaa;
uha.parent = sc;
uha.reportid = UHIDEV_CLAIM_ALLREPORTID;
/* Look for a driver claiming all report IDs first. */
dev = config_found_sm(self, &uha, NULL, uhidevsubmatch);
if (dev != NULL) {
for (repid = 0; repid < nrepid; repid++)
sc->sc_subdevs[repid] = (struct uhidev *)dev;
return;
}
for (repid = 0; repid < nrepid; repid++) {
DPRINTF(("%s: try repid=%d\n", __func__, repid));
if (hid_report_size(desc, size, hid_input, repid) == 0 &&
hid_report_size(desc, size, hid_output, repid) == 0 &&
hid_report_size(desc, size, hid_feature, repid) == 0)
continue;
uha.reportid = repid;
dev = config_found_sm(self, &uha, uhidevprint, uhidevsubmatch);
sc->sc_subdevs[repid] = (struct uhidev *)dev;
}
}
