1/* $NetBSD: ixp425_pci_asm.S,v 1.2 2005/12/11 12:16:51 christos Exp $ */ 2 3/* 4 * Copyright (c) 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38#include <arm/asm.h> 39#include <arm/cpuconf.h> 40 41/* 42 * Bus space functions for IXP425 PCI space access. We have to swizzle 43 * the address for 1 and 2 byte accesses when in big-endian mode. 44 */ 45 46/* 47 * read single 48 */ 49 50ENTRY(ixp425_pci_mem_bs_r_1) 51#ifdef __ARMEB__ 52 add r1, r1, r2 53 eor r1, r1, #0x3 54 ldrb r0, [r1] 55#else 56 ldrb r0, [r1, r2] 57#endif /* __ARMEB__ */ 58 mov pc, lr 59 60ENTRY(ixp425_pci_mem_bs_r_2) 61#ifdef __ARMEB__ 62 add r1, r1, r2 63 eor r1, r1, #0x2 64 ldrh r0, [r1] 65#else 66 ldrh r0, [r1, r2] 67#endif /* __ARMEB__ */ 68 mov pc, lr 69 70ENTRY(ixp425_pci_mem_bs_r_4) 71 ldr r0, [r1, r2] 72 mov pc, lr 73 74/* 75 * write single 76 */ 77 78ENTRY(ixp425_pci_mem_bs_w_1) 79#ifdef __ARMEB__ 80 add r1, r1, r2 81 eor r1, r1, #0x3 82 strb r3, [r1] 83#else 84 strb r3, [r1, r2] 85#endif /* __ARMEB__ */ 86 mov pc, lr 87 88ENTRY(ixp425_pci_mem_bs_w_2) 89#ifdef __ARMEB__ 90 add r1, r1, r2 91 eor r1, r1, #0x2 92 strh r3, [r1] 93#else 94 strh r3, [r1, r2] 95#endif /* __ARMEB__ */ 96 mov pc, lr 97 98ENTRY(ixp425_pci_mem_bs_w_4) 99 str r3, [r1, r2] 100 mov pc, lr 101