ixp425_pci_asm.S revision 272461
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 * $FreeBSD: releng/10.1/sys/arm/xscale/ixp425/ixp425_pci_asm.S 164426 2006-11-19 23:55:23Z sam $ 38 * 39 */ 40 41#include <machine/asm.h> 42 43/* 44 * Bus space functions for IXP425 PCI space access. We have to swizzle 45 * the address for 1 and 2 byte accesses when in big-endian mode. 46 */ 47 48/* 49 * read single 50 */ 51 52ENTRY(ixp425_pci_mem_bs_r_1) 53#ifdef __ARMEB__ 54 add r1, r1, r2 55 eor r1, r1, #0x3 56 ldrb r0, [r1] 57#else 58 ldrb r0, [r1, r2] 59#endif /* __ARMEB__ */ 60 mov pc, lr 61 62ENTRY(ixp425_pci_mem_bs_r_2) 63#ifdef __ARMEB__ 64 add r1, r1, r2 65 eor r1, r1, #0x2 66 ldrh r0, [r1] 67#else 68 ldrh r0, [r1, r2] 69#endif /* __ARMEB__ */ 70 mov pc, lr 71 72ENTRY(ixp425_pci_mem_bs_r_4) 73 ldr r0, [r1, r2] 74 mov pc, lr 75 76/* 77 * write single 78 */ 79 80ENTRY(ixp425_pci_mem_bs_w_1) 81#ifdef __ARMEB__ 82 add r1, r1, r2 83 eor r1, r1, #0x3 84 strb r3, [r1] 85#else 86 strb r3, [r1, r2] 87#endif /* __ARMEB__ */ 88 mov pc, lr 89 90ENTRY(ixp425_pci_mem_bs_w_2) 91#ifdef __ARMEB__ 92 add r1, r1, r2 93 eor r1, r1, #0x2 94 strh r3, [r1] 95#else 96 strh r3, [r1, r2] 97#endif /* __ARMEB__ */ 98 mov pc, lr 99 100ENTRY(ixp425_pci_mem_bs_w_4) 101 str r3, [r1, r2] 102 mov pc, lr 103