1 /*- 2 * Copyright (c) 2015 M. Warner Losh <imp@FreeBSD.org> 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice unmodified, this list of conditions, and the following 9 * disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef DEV_OW_OWLL_H 27 #define DEV_OW_OWLL_H 1 28 29 /* 30 * Generalized parameters for the mode of operation in the bus. All units 31 * are in nanoseconds, and assume that all timings are < 4s. 32 * See owll_if.m for timings, and refer to AN937 for details. 33 */ 34 struct ow_timing 35 { 36 uint32_t t_slot; /* Slot time */ 37 uint32_t t_low0; /* Time low for a 0 bit. */ 38 uint32_t t_low1; /* Time low for a 1 bit. */ 39 uint32_t t_lowr; /* Time slave holds line down per bit */ 40 uint32_t t_release; /* Time after t_rdv to float high */ 41 uint32_t t_rec; /* After sample before M low */ 42 uint32_t t_rdv; /* Time to poll the bit after M low */ 43 uint32_t t_rstl; /* Time M low on reset */ 44 uint32_t t_rsth; /* Time M high on reset */ 45 uint32_t t_pdl; /* Time S low on reset */ 46 uint32_t t_pdh; /* Time R high after M low on reset */ 47 }; 48 49 #include "owll_if.h" 50 51 #endif /* DEV_OW_OWLL_H */ 52