1 /* $NetBSD: syscon.h,v 1.2 2020/12/11 09:40:28 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _DEV_FDT_SYSCON_H_ 30 #define _DEV_FDT_SYSCON_H_ 31 32 struct syscon { 33 void *priv; 34 35 void (*lock)(void *); 36 void (*unlock)(void *); 37 uint32_t (*read_4)(void *, bus_size_t); 38 void (*write_4)(void *, bus_size_t, uint32_t); 39 }; 40 41 #define syscon_lock(_syscon) \ 42 (_syscon)->lock((_syscon)->priv) 43 44 #define syscon_unlock(_syscon) \ 45 (_syscon)->unlock((_syscon)->priv) 46 47 #define syscon_read_4(_syscon, _reg) \ 48 (_syscon)->read_4((_syscon)->priv, (_reg)) 49 50 #define syscon_write_4(_syscon, _reg, _val) \ 51 (_syscon)->write_4((_syscon)->priv, (_reg), (_val)) 52 53 54 #endif /* _DEV_FDT_SYSCON_H_ */ 55