1/* $NetBSD: iomd_io_asm.S,v 1.1 2001/10/05 22:27:41 reinoud Exp $ */ 2 3/* 4 * Copyright (c) 1997 Mark Brinicombe. 5 * Copyright (c) 1997 Causality Limited. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Mark Brinicombe. 19 * 4. The name of the company nor the name of the author may be used to 20 * endorse or promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#include <machine/asm.h> 37 38/* 39 * bus_space I/O functions for iomd 40 */ 41 42/* 43 * read single 44 */ 45 46ENTRY(iomd_bs_r_1) 47 ldrb r0, [r1, r2, lsl #2] 48 mov pc, lr 49 50ENTRY(iomd_bs_r_2) 51 ldr r0, [r1, r2, lsl #2] 52 bic r0, r0, #0xff000000 53 bic r0, r0, #0x00ff0000 54 mov pc, lr 55 56ENTRY(iomd_bs_r_4) 57 ldr r0, [r1, r2, lsl #2] 58 mov pc, lr 59 60/* 61 * write single 62 */ 63 64ENTRY(iomd_bs_w_1) 65 strb r3, [r1, r2, lsl #2] 66 mov pc, lr 67 68ENTRY(iomd_bs_w_2) 69 mov r3, r3, lsl #16 70 orr r3, r3, r3, lsr #16 71 str r3, [r1, r2, lsl #2] 72 mov pc, lr 73 74ENTRY(iomd_bs_w_4) 75 str r3, [r1, r2, lsl #2] 76 mov pc, lr 77 78 79/* 80 * read multiple 81 */ 82 83ENTRY(iomd_bs_rm_2) 84 add r0, r1, r2, lsl #2 85 mov r1, r3 86 ldr r2, [sp, #0] 87 b _C_LABEL(insw16) 88 89/* 90 * write multiple 91 */ 92 93ENTRY(iomd_bs_wm_2) 94 add r0, r1, r2, lsl #2 95 mov r1, r3 96 ldr r2, [sp, #0] 97 b _C_LABEL(outsw16) 98