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