HackRF-Treasure-Chest/Software/portapack-mayhem/hackrf/firmware/common/usb_request.c
2022-09-22 09:26:57 -07:00

95 lines
2.5 KiB
C

/*
* Copyright 2012 Jared Boone
*
* This file is part of HackRF.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "usb.h"
#include "usb_request.h"
#include "usb_queue.h"
#include <stdbool.h>
static void usb_request(
usb_endpoint_t* const endpoint,
const usb_transfer_stage_t stage
) {
usb_request_status_t status = USB_REQUEST_STATUS_STALL;
usb_request_handler_fn handler = 0;
switch( endpoint->setup.request_type & USB_SETUP_REQUEST_TYPE_mask ) {
case USB_SETUP_REQUEST_TYPE_STANDARD:
handler = usb_request_handlers.standard;
break;
case USB_SETUP_REQUEST_TYPE_CLASS:
handler = usb_request_handlers.class;
break;
case USB_SETUP_REQUEST_TYPE_VENDOR:
handler = usb_request_handlers.vendor;
break;
case USB_SETUP_REQUEST_TYPE_RESERVED:
handler = usb_request_handlers.reserved;
break;
}
if( handler ) {
status = handler(endpoint, stage);
}
if( status != USB_REQUEST_STATUS_OK ) {
// USB 2.0 section 9.2.7 "Request Error"
usb_endpoint_stall(endpoint);
}
}
void usb_setup_complete(
usb_endpoint_t* const endpoint
) {
usb_request(endpoint, USB_TRANSFER_STAGE_SETUP);
}
void usb_control_out_complete(
usb_endpoint_t* const endpoint
) {
const bool device_to_host =
endpoint->setup.request_type >> USB_SETUP_REQUEST_TYPE_DATA_TRANSFER_DIRECTION_shift;
if( device_to_host ) {
usb_request(endpoint, USB_TRANSFER_STAGE_STATUS);
} else {
usb_request(endpoint, USB_TRANSFER_STAGE_DATA);
}
usb_queue_transfer_complete(endpoint);
}
void usb_control_in_complete(
usb_endpoint_t* const endpoint
) {
const bool device_to_host =
endpoint->setup.request_type >> USB_SETUP_REQUEST_TYPE_DATA_TRANSFER_DIRECTION_shift;
if( device_to_host ) {
usb_request(endpoint, USB_TRANSFER_STAGE_DATA);
} else {
usb_request(endpoint, USB_TRANSFER_STAGE_STATUS);
}
usb_queue_transfer_complete(endpoint);
}