1164426Ssam/* $NetBSD: ixp425_a4x_io.S,v 1.2 2005/12/11 12:16:51 christos Exp $ */ 2164426Ssam 3164426Ssam/* 4164426Ssam * Copyright 2003 Wasabi Systems, Inc. 5164426Ssam * All rights reserved. 6164426Ssam * 7164426Ssam * Written by Steve C. Woodford for Wasabi Systems, Inc. 8164426Ssam * 9164426Ssam * Redistribution and use in source and binary forms, with or without 10164426Ssam * modification, are permitted provided that the following conditions 11164426Ssam * are met: 12164426Ssam * 1. Redistributions of source code must retain the above copyright 13164426Ssam * notice, this list of conditions and the following disclaimer. 14164426Ssam * 2. Redistributions in binary form must reproduce the above copyright 15164426Ssam * notice, this list of conditions and the following disclaimer in the 16164426Ssam * documentation and/or other materials provided with the distribution. 17164426Ssam * 3. All advertising materials mentioning features or use of this software 18164426Ssam * must display the following acknowledgement: 19164426Ssam * This product includes software developed for the NetBSD Project by 20164426Ssam * Wasabi Systems, Inc. 21164426Ssam * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22164426Ssam * or promote products derived from this software without specific prior 23164426Ssam * written permission. 24164426Ssam * 25164426Ssam * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26164426Ssam * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27164426Ssam * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28164426Ssam * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29164426Ssam * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30164426Ssam * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31164426Ssam * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32164426Ssam * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33164426Ssam * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34164426Ssam * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35164426Ssam * POSSIBILITY OF SUCH DAMAGE. 36164426Ssam */ 37164426Ssam 38164426Ssam/* 39164426Ssam * There are simple bus space functions for IO registers mapped at 40164426Ssam * 32-bit aligned positions. offset is multiplied by 4. 41164426Ssam * 42164426Ssam * Based loosely on pxa2x0_a2x_io.S 43164426Ssam */ 44164426Ssam 45164426Ssam#include <machine/asm.h> 46164426Ssam__FBSDID("$FreeBSD$"); 47164426Ssam 48164426Ssam/* 49164426Ssam * bus_space I/O functions with offset*4 50164426Ssam */ 51164426Ssam 52164426Ssam/* 53164426Ssam * Read single 54164426Ssam */ 55164426SsamENTRY(a4x_bs_r_1) 56164426Ssam ldr r0, [r1, r2, LSL #2] 57164426Ssam and r0, r0, #0xff 58164426Ssam mov pc, lr 59164426Ssam 60164426SsamENTRY(a4x_bs_r_2) 61164426Ssam ldr r0, [r1, r2, LSL #2] 62164426Ssam mov r1, #0xff 63164426Ssam orr r1, r1, r1, lsl #8 64164426Ssam and r0, r0, r1 65164426Ssam mov pc, lr 66164426Ssam 67164426SsamENTRY(a4x_bs_r_4) 68164426Ssam ldr r0, [r1, r2, LSL #2] 69164426Ssam mov pc, lr 70164426Ssam 71164426Ssam/* 72164426Ssam * Write single 73164426Ssam */ 74164426SsamENTRY(a4x_bs_w_1) 75164426Ssam and r3, r3, #0xff 76164426Ssam str r3, [r1, r2, LSL #2] 77164426Ssam mov pc, lr 78164426Ssam 79164426SsamENTRY(a4x_bs_w_2) 80164426Ssam mov r0, #0xff 81164426Ssam orr r0, r0, r0, lsl #8 82164426Ssam and r3, r3, r0 83164426Ssam str r3, [r1, r2, LSL #2] 84164426Ssam mov pc, lr 85164426Ssam 86164426SsamENTRY(a4x_bs_w_4) 87164426Ssam str r3, [r1, r2, LSL #2] 88164426Ssam mov pc, lr 89164426Ssam 90164426Ssam/* 91164426Ssam * Read multiple 92164426Ssam */ 93164426SsamENTRY(a4x_bs_rm_1) 94164426Ssam add r0, r1, r2, lsl #2 95164426Ssam ldr r2, [sp, #0] 96164426Ssam mov r1, r3 97164426Ssam teq r2, #0 98164426Ssam moveq pc, lr 99164426Ssam1: ldr r3, [r0] 100164426Ssam subs r2, r2, #1 101164426Ssam strb r3, [r1], #1 102164426Ssam bne 1b 103164426Ssam mov pc, lr 104164426Ssam 105164426SsamENTRY(a4x_bs_rm_2) 106164426Ssam add r0, r1, r2, lsl #2 107164426Ssam ldr r2, [sp, #0] 108164426Ssam mov r1, r3 109164426Ssam teq r2, #0 110164426Ssam moveq pc, lr 111164426Ssam1: ldr r3, [r0] 112164426Ssam subs r2, r2, #1 113164426Ssam strh r3, [r1], #2 114164426Ssam bne 1b 115164426Ssam mov pc, lr 116164426Ssam 117164426Ssam/* 118164426Ssam * Write multiple 119164426Ssam */ 120164426SsamENTRY(a4x_bs_wm_1) 121164426Ssam add r0, r1, r2, lsl #2 122164426Ssam ldr r2, [sp, #0] 123164426Ssam mov r1, r3 124164426Ssam teq r2, #0 125164426Ssam moveq pc, lr 126164426Ssam1: ldrb r3, [r1], #1 127164426Ssam subs r2, r2, #1 128164426Ssam str r3, [r0] 129164426Ssam bne 1b 130164426Ssam mov pc, lr 131164426Ssam 132164426SsamENTRY(a4x_bs_wm_2) 133164426Ssam add r0, r1, r2, lsl #2 134164426Ssam ldr r2, [sp, #0] 135164426Ssam mov r1, r3 136164426Ssam teq r2, #0 137164426Ssam moveq pc, lr 138164426Ssam1: ldrh r3, [r1], #2 139164426Ssam subs r2, r2, #1 140164426Ssam str r3, [r0] 141164426Ssam bne 1b 142164426Ssam mov pc, lr 143