1284273Sandrew/*- 2284273Sandrew * Copyright (c) 2015 The FreeBSD Foundation 3284273Sandrew * All rights reserved. 4284273Sandrew * 5284273Sandrew * This software was developed by Andrew Turner under 6284273Sandrew * sponsorship from the FreeBSD Foundation. 7284273Sandrew * 8284273Sandrew * Redistribution and use in source and binary forms, with or without 9284273Sandrew * modification, are permitted provided that the following conditions 10284273Sandrew * are met: 11284273Sandrew * 1. Redistributions of source code must retain the above copyright 12284273Sandrew * notice, this list of conditions and the following disclaimer. 13284273Sandrew * 2. Redistributions in binary form must reproduce the above copyright 14284273Sandrew * notice, this list of conditions and the following disclaimer in the 15284273Sandrew * documentation and/or other materials provided with the distribution. 16284273Sandrew * 17284273Sandrew * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18284273Sandrew * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19284273Sandrew * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20284273Sandrew * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21284273Sandrew * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22284273Sandrew * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23284273Sandrew * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24284273Sandrew * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25284273Sandrew * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26284273Sandrew * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27284273Sandrew * SUCH DAMAGE. 28284273Sandrew * 29284273Sandrew * $FreeBSD$ 30284273Sandrew */ 31284273Sandrew 32284273Sandrew#ifndef _MACHINE_IODEV_H_ 33284273Sandrew#define _MACHINE_IODEV_H_ 34284273Sandrew 35284273Sandrew#define iodev_read_1(a) \ 36284273Sandrew({ \ 37284273Sandrew uint8_t val; \ 38284273Sandrew __asm __volatile("ldrb %w0, [%1]" : "=&r" (val) : "r"(a)); \ 39284273Sandrew val; \ 40284273Sandrew}) 41284273Sandrew 42284273Sandrew#define iodev_read_2(a) \ 43284273Sandrew({ \ 44284273Sandrew uint16_t val; \ 45284273Sandrew __asm __volatile("ldrh %w0, [%1]" : "=&r" (val) : "r"(a)); \ 46284273Sandrew val; \ 47284273Sandrew}) 48284273Sandrew 49284273Sandrew#define iodev_read_4(a) \ 50284273Sandrew({ \ 51284273Sandrew uint32_t val; \ 52284273Sandrew __asm __volatile("ldr %w0, [%1]" : "=&r" (val) : "r"(a)); \ 53284273Sandrew val; \ 54284273Sandrew}) 55284273Sandrew 56284273Sandrew#define iodev_write_1(a, v) \ 57284273Sandrew __asm __volatile("strb %w0, [%1]" :: "r" (v), "r"(a)) 58284273Sandrew 59284273Sandrew#define iodev_write_2(a, v) \ 60284273Sandrew __asm __volatile("strh %w0, [%1]" :: "r" (v), "r"(a)) 61284273Sandrew 62284273Sandrew#define iodev_write_4(a, v) \ 63284273Sandrew __asm __volatile("str %w0, [%1]" :: "r" (v), "r"(a)) 64284273Sandrew 65284273Sandrew#endif /* _MACHINE_IODEV_H_ */ 66