93 lines
2.9 KiB
C
93 lines
2.9 KiB
C
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/*
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* Copyright 2012 Jared Boone
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* Copyright 2013 Ben Gamari
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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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#ifndef __USB_QUEUE_H__
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#define __USB_QUEUE_H__
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#include <libopencm3/lpc43xx/usb.h>
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#include "usb_type.h"
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typedef struct _usb_transfer_t usb_transfer_t;
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typedef struct _usb_queue_t usb_queue_t;
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typedef void (*transfer_completion_cb)(void*, unsigned int);
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// This is an opaque datatype. Thou shall not touch these members.
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struct _usb_transfer_t {
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struct _usb_transfer_t* next;
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usb_transfer_descriptor_t td ATTR_ALIGNED(64);
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unsigned int maximum_length;
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struct _usb_queue_t* queue;
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transfer_completion_cb completion_cb;
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void* user_data;
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};
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// This is an opaque datatype. Thou shall not touch these members.
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struct _usb_queue_t {
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struct usb_endpoint_t* endpoint;
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const unsigned int pool_size;
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usb_transfer_t* volatile free_transfers;
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usb_transfer_t* volatile active;
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};
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#define USB_DECLARE_QUEUE(endpoint_name) \
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struct _usb_queue_t endpoint_name##_queue;
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#define USB_DEFINE_QUEUE(endpoint_name, _pool_size) \
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struct _usb_transfer_t endpoint_name##_transfers[_pool_size]; \
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struct _usb_queue_t endpoint_name##_queue = { \
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.endpoint = &endpoint_name, \
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.free_transfers = endpoint_name##_transfers, \
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.pool_size = _pool_size \
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};
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void usb_queue_flush_endpoint(const usb_endpoint_t* const endpoint);
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int usb_transfer_schedule(
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const usb_endpoint_t* const endpoint,
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void* const data,
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const uint32_t maximum_length,
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const transfer_completion_cb completion_cb,
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void* const user_data
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);
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int usb_transfer_schedule_block(
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const usb_endpoint_t* const endpoint,
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void* const data,
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const uint32_t maximum_length,
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const transfer_completion_cb completion_cb,
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void* const user_data
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);
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int usb_transfer_schedule_ack(
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const usb_endpoint_t* const endpoint
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);
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void usb_queue_init(
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usb_queue_t* const queue
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);
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void usb_queue_transfer_complete(
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usb_endpoint_t* const endpoint
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);
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#endif//__USB_QUEUE_H__
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