| UHID(4) | Device Drivers Manual | UHID(4) | 
uhid —
uhid* at uhidev? reportid ? flags N
uhid driver provides support for all HID (Human
  Interface Device) interfaces in USB devices that do not have a special driver.
Normally the uhid driver is used when no
    other HID driver attaches to a device. If “flags 1” is
    specified, the uhid driver will instead attach with
    a very high priority and always be used. Together with the
    vendor and product locators
    on the uhidev(4) driver this
    can be used to force the uhid driver to be used for
    a certain device.
The device handles the following ioctl(2) calls:
USB_GET_REPORT_ID
    (int)USB_GET_REPORT_DESC
    (struct usb_ctl_report_desc)
struct usb_ctl_report_desc {
    int     ucrd_size;
    u_char  ucrd_data[1024];	/* filled data size will vary */
};
    
    USB_SET_IMMED
    (int)USB_GET_REPORT
    (struct usb_ctl_report)report field indicates which report is
      requested. It should be UHID_INPUT_REPORT,
      UHID_OUTPUT_REPORT, or
      UHID_FEATURE_REPORT. This call may fail if the
      device does not support this feature.
    
struct usb_ctl_report {
	int     ucr_report;
	u_char	ucr_data[1024];	/* used data size will vary */
};
    
    USB_SET_REPORT
    (struct usb_ctl_report)report field
      indicates which report is to be set. It should be
      UHID_INPUT_REPORT,
      UHID_OUTPUT_REPORT, or
      UHID_FEATURE_REPORT. This call may fail if the
      device does not support this feature.USB_GET_DEVICE_DESC
    (usb_device_descriptor_t)USB_GET_DEVICEINFO
    (struct usb_device_info)USB_GET_STRING_DESC
    (struct usb_string_desc)
struct usb_string_desc {
	int	usd_string_index;
	int	usd_language_id;
	usb_string_descriptor_t usd_desc;
};
    
    Use read(2) to get data from the device. Data should be read in chunks of the size prescribed by the report descriptor.
Use write(2) send data to the device. Data should be written in chunks of the size prescribed by the report descriptor.
uhid driver appeared in NetBSD
  1.4. Support for the USB_GET_DEVICEINFO and
  USB_GET_STRING_DESC ioctls appeared in
  NetBSD 2.0.
| May 14, 2012 | NetBSD 10.0 |