ixp425_a4x_io.S revision 1.1.4.4
1 1.1.4.4 skrll /* $NetBSD: ixp425_a4x_io.S,v 1.1.4.4 2004/09/21 13:13:42 skrll Exp $ */ 2 1.1.4.2 skrll 3 1.1.4.2 skrll /* 4 1.1.4.2 skrll * Copyright 2003 Wasabi Systems, Inc. 5 1.1.4.2 skrll * All rights reserved. 6 1.1.4.2 skrll * 7 1.1.4.2 skrll * Written by Steve C. Woodford for Wasabi Systems, Inc. 8 1.1.4.2 skrll * 9 1.1.4.2 skrll * Redistribution and use in source and binary forms, with or without 10 1.1.4.2 skrll * modification, are permitted provided that the following conditions 11 1.1.4.2 skrll * are met: 12 1.1.4.2 skrll * 1. Redistributions of source code must retain the above copyright 13 1.1.4.2 skrll * notice, this list of conditions and the following disclaimer. 14 1.1.4.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 15 1.1.4.2 skrll * notice, this list of conditions and the following disclaimer in the 16 1.1.4.2 skrll * documentation and/or other materials provided with the distribution. 17 1.1.4.2 skrll * 3. All advertising materials mentioning features or use of this software 18 1.1.4.2 skrll * must display the following acknowledgement: 19 1.1.4.2 skrll * This product includes software developed for the NetBSD Project by 20 1.1.4.2 skrll * Wasabi Systems, Inc. 21 1.1.4.2 skrll * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 1.1.4.2 skrll * or promote products derived from this software without specific prior 23 1.1.4.2 skrll * written permission. 24 1.1.4.2 skrll * 25 1.1.4.2 skrll * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 1.1.4.2 skrll * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.1.4.2 skrll * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.1.4.2 skrll * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 1.1.4.2 skrll * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.1.4.2 skrll * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.1.4.2 skrll * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.1.4.2 skrll * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.1.4.2 skrll * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.1.4.2 skrll * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.1.4.2 skrll * POSSIBILITY OF SUCH DAMAGE. 36 1.1.4.2 skrll */ 37 1.1.4.2 skrll 38 1.1.4.2 skrll /* 39 1.1.4.2 skrll * There are simple bus space functions for IO registers mapped at 40 1.1.4.2 skrll * 32-bit aligned positions. offset is multiplied by 4. 41 1.1.4.2 skrll * 42 1.1.4.2 skrll * Based loosely on pxa2x0_a2x_io.S 43 1.1.4.2 skrll */ 44 1.1.4.2 skrll 45 1.1.4.2 skrll #include <machine/asm.h> 46 1.1.4.2 skrll 47 1.1.4.2 skrll /* 48 1.1.4.2 skrll * bus_space I/O functions with offset*4 49 1.1.4.2 skrll */ 50 1.1.4.2 skrll 51 1.1.4.2 skrll /* 52 1.1.4.2 skrll * Read single 53 1.1.4.2 skrll */ 54 1.1.4.2 skrll ENTRY(a4x_bs_r_1) 55 1.1.4.2 skrll ldr r0, [r1, r2, LSL #2] 56 1.1.4.2 skrll and r0, r0, #0xff 57 1.1.4.2 skrll mov pc, lr 58 1.1.4.2 skrll 59 1.1.4.2 skrll ENTRY(a4x_bs_r_2) 60 1.1.4.2 skrll ldr r0, [r1, r2, LSL #2] 61 1.1.4.2 skrll mov r1, #0xff 62 1.1.4.2 skrll orr r1, r1, r1, lsl #8 63 1.1.4.2 skrll and r0, r0, r1 64 1.1.4.2 skrll mov pc, lr 65 1.1.4.2 skrll 66 1.1.4.2 skrll ENTRY(a4x_bs_r_4) 67 1.1.4.2 skrll ldr r0, [r1, r2, LSL #2] 68 1.1.4.2 skrll mov pc, lr 69 1.1.4.2 skrll 70 1.1.4.2 skrll /* 71 1.1.4.2 skrll * Write single 72 1.1.4.2 skrll */ 73 1.1.4.2 skrll ENTRY(a4x_bs_w_1) 74 1.1.4.2 skrll and r3, r3, #0xff 75 1.1.4.2 skrll str r3, [r1, r2, LSL #2] 76 1.1.4.2 skrll mov pc, lr 77 1.1.4.2 skrll 78 1.1.4.2 skrll ENTRY(a4x_bs_w_2) 79 1.1.4.2 skrll mov r0, #0xff 80 1.1.4.2 skrll orr r0, r0, r0, lsl #8 81 1.1.4.2 skrll and r3, r3, r0 82 1.1.4.2 skrll str r3, [r1, r2, LSL #2] 83 1.1.4.2 skrll mov pc, lr 84 1.1.4.2 skrll 85 1.1.4.2 skrll ENTRY(a4x_bs_w_4) 86 1.1.4.2 skrll str r3, [r1, r2, LSL #2] 87 1.1.4.2 skrll mov pc, lr 88 1.1.4.2 skrll 89 1.1.4.2 skrll /* 90 1.1.4.2 skrll * Read multiple 91 1.1.4.2 skrll */ 92 1.1.4.2 skrll ENTRY(a4x_bs_rm_1) 93 1.1.4.2 skrll add r0, r1, r2, lsl #2 94 1.1.4.2 skrll ldr r2, [sp, #0] 95 1.1.4.2 skrll mov r1, r3 96 1.1.4.2 skrll teq r2, #0 97 1.1.4.2 skrll moveq pc, lr 98 1.1.4.2 skrll 1: ldr r3, [r0] 99 1.1.4.2 skrll subs r2, r2, #1 100 1.1.4.2 skrll strb r3, [r1], #1 101 1.1.4.2 skrll bne 1b 102 1.1.4.2 skrll mov pc, lr 103 1.1.4.2 skrll 104 1.1.4.2 skrll ENTRY(a4x_bs_rm_2) 105 1.1.4.2 skrll add r0, r1, r2, lsl #2 106 1.1.4.2 skrll ldr r2, [sp, #0] 107 1.1.4.2 skrll mov r1, r3 108 1.1.4.2 skrll teq r2, #0 109 1.1.4.2 skrll moveq pc, lr 110 1.1.4.2 skrll 1: ldr r3, [r0] 111 1.1.4.2 skrll subs r2, r2, #1 112 1.1.4.2 skrll strh r3, [r1], #2 113 1.1.4.2 skrll bne 1b 114 1.1.4.2 skrll mov pc, lr 115 1.1.4.2 skrll 116 1.1.4.2 skrll /* 117 1.1.4.2 skrll * Write multiple 118 1.1.4.2 skrll */ 119 1.1.4.2 skrll ENTRY(a4x_bs_wm_1) 120 1.1.4.2 skrll add r0, r1, r2, lsl #2 121 1.1.4.2 skrll ldr r2, [sp, #0] 122 1.1.4.2 skrll mov r1, r3 123 1.1.4.2 skrll teq r2, #0 124 1.1.4.2 skrll moveq pc, lr 125 1.1.4.2 skrll 1: ldrb r3, [r1], #1 126 1.1.4.2 skrll subs r2, r2, #1 127 1.1.4.2 skrll str r3, [r0] 128 1.1.4.2 skrll bne 1b 129 1.1.4.2 skrll mov pc, lr 130 1.1.4.2 skrll 131 1.1.4.2 skrll ENTRY(a4x_bs_wm_2) 132 1.1.4.2 skrll add r0, r1, r2, lsl #2 133 1.1.4.2 skrll ldr r2, [sp, #0] 134 1.1.4.2 skrll mov r1, r3 135 1.1.4.2 skrll teq r2, #0 136 1.1.4.2 skrll moveq pc, lr 137 1.1.4.2 skrll 1: ldrh r3, [r1], #2 138 1.1.4.2 skrll subs r2, r2, #1 139 1.1.4.2 skrll str r3, [r0] 140 1.1.4.2 skrll bne 1b 141 1.1.4.2 skrll mov pc, lr 142
Indexes created Wed Oct 22 13:09:56 GMT 2025