rndtest.h revision 302408 
153152Smarcel/*	$FreeBSD: stable/11/sys/dev/rndtest/rndtest.h 139749 2005-01-06 01:43:34Z imp $	*/
253152Smarcel/*	$OpenBSD$	*/
331567Ssef
439908Ssef/*-
553152Smarcel * Copyright (c) 2002 Jason L. Wright (jason@thought.net)
639908Ssef * All rights reserved.
740035Skato *
839908Ssef * Redistribution and use in source and binary forms, with or without
939908Ssef * modification, are permitted provided that the following conditions
1039908Ssef * are met:
1132367Ssef * 1. Redistributions of source code must retain the above copyright
1231571Ssef *    notice, this list of conditions and the following disclaimer.
1331571Ssef * 2. Redistributions in binary form must reproduce the above copyright
1431567Ssef *    notice, this list of conditions and the following disclaimer in the
1531567Ssef *    documentation and/or other materials provided with the distribution.
1631567Ssef * 3. All advertising materials mentioning features or use of this software
1731567Ssef *    must display the following acknowledgement:
1831567Ssef *	This product includes software developed by Jason L. Wright
1931567Ssef * 4. The name of the author may not be used to endorse or promote products
2031567Ssef *    derived from this software without specific prior written permission.
2131567Ssef *
2231567Ssef * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
2331567Ssef * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
2431567Ssef * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
2531567Ssef * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
2631567Ssef * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
2731567Ssef * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
2831567Ssef * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2931567Ssef * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
3031567Ssef * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
3194432Sru * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
3265849Sjkh * POSSIBILITY OF SUCH DAMAGE.
3331571Ssef */
3431567Ssef
35
36/* Some of the tests depend on these values */
37#define	RNDTEST_NBYTES	2500
38#define	RNDTEST_NBITS	(8 * RNDTEST_NBYTES)
39
40struct rndtest_state {
41	device_t	rs_parent;	/* associated device */
42	u_int8_t	*rs_end, *rs_begin, *rs_current;
43	struct callout	rs_to;
44	int		rs_collect;	/* collect and test data */
45	int		rs_discard;	/* discard/accept random data */
46	u_int8_t	rs_buf[RNDTEST_NBYTES];
47};
48
49struct rndtest_stats {
50	u_int32_t	rst_discard;	/* number of bytes discarded */
51	u_int32_t	rst_tests;	/* number of test runs */
52	u_int32_t	rst_monobit;	/* monobit test failures */
53	u_int32_t	rst_runs;	/* 0/1 runs failures */
54	u_int32_t	rst_longruns;	/* longruns failures */
55	u_int32_t	rst_chi;	/* chi^2 failures */
56};
57
58extern 	struct rndtest_state *rndtest_attach(device_t dev);
59extern	void rndtest_detach(struct rndtest_state *);
60extern	void rndtest_harvest(struct rndtest_state *arg, void * buf, u_int len);
61