text: /*	$FreeBSD: soc2013/dpl/head/sys/dev/rndtest/rndtest.h 139792 2005-01-06 01:43:34Z imp $	*/
  /*	$OpenBSD$	*/
  
  /*-
   * Copyright (c) 2002 Jason L. Wright (jason@thought.net)
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by Jason L. Wright
   * 4. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   */
  
  
  /* Some of the tests depend on these values */
  #define	RNDTEST_NBYTES	2500
  #define	RNDTEST_NBITS	(8 * RNDTEST_NBYTES)
  
  struct rndtest_state {
  	device_t	rs_parent;	/* associated device */
  	u_int8_t	*rs_end, *rs_begin, *rs_current;
  	struct callout	rs_to;
  	int		rs_collect;	/* collect and test data */
  	int		rs_discard;	/* discard/accept random data */
  	u_int8_t	rs_buf[RNDTEST_NBYTES];
  };
  
  struct rndtest_stats {
  	u_int32_t	rst_discard;	/* number of bytes discarded */
  	u_int32_t	rst_tests;	/* number of test runs */
  	u_int32_t	rst_monobit;	/* monobit test failures */
  	u_int32_t	rst_runs;	/* 0/1 runs failures */
  	u_int32_t	rst_longruns;	/* longruns failures */
  	u_int32_t	rst_chi;	/* chi^2 failures */
  };
  
  extern 	struct rndtest_state *rndtest_attach(device_t dev);
  extern	void rndtest_detach(struct rndtest_state *);
  extern	void rndtest_harvest(struct rndtest_state *arg, void * buf, u_int len);
  