mc146818var.h revision 170844
1/*- 2 * Copyright (c) 2003 Izumi Tsutsui. All rights reserved. 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, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 3. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * from: NetBSD: mc146818var.h,v 1.3 2003/11/24 06:20:40 tsutsui Exp 27 * 28 * $FreeBSD: head/sys/dev/mc146818/mc146818var.h 170844 2007-06-16 23:10:00Z marius $ 29 */ 30 31struct mc146818_softc { 32 bus_space_tag_t sc_bst; /* bus space tag */ 33 bus_space_handle_t sc_bsh; /* bus space handle */ 34 35 struct mtx sc_mtx; /* hardware mutex */ 36 37 u_char sc_rega; /* register A */ 38 u_char sc_regb; /* register B */ 39 40 u_int sc_year0; /* year counter offset */ 41 u_int sc_flag; /* MD flags */ 42#define MC146818_NO_CENT_ADJUST 0x0001 /* don't adjust century */ 43#define MC146818_BCD 0x0002 /* use BCD mode */ 44#define MC146818_12HR 0x0004 /* use AM/PM mode */ 45 46 /* MD chip register read/write functions */ 47 u_int (*sc_mcread)(device_t, u_int); 48 void (*sc_mcwrite)(device_t, u_int, u_int); 49 /* MD century get/set functions */ 50 u_int (*sc_getcent)(device_t); 51 void (*sc_setcent)(device_t, u_int); 52}; 53 54/* Default read/write functions */ 55u_int mc146818_def_read(device_t, u_int); 56void mc146818_def_write(device_t, u_int, u_int); 57 58/* Chip attach function */ 59int mc146818_attach(device_t); 60 61/* Methods for the clock interface */ 62#ifdef notyet 63int mc146818_getsecs(device_t, int *); 64#endif 65int mc146818_gettime(device_t, struct timespec *); 66int mc146818_settime(device_t, struct timespec *); 67