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/10.2/sys/arm/xscale/ixp425/ixp425_pci_asm.S 275767 2014-12-14 16:28:53Z andrew $ 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 61END(ixp425_pci_mem_bs_r_1) 62 63ENTRY(ixp425_pci_mem_bs_r_2) 64#ifdef __ARMEB__ 65 add r1, r1, r2 66 eor r1, r1, #0x2 67 ldrh r0, [r1] 68#else 69 ldrh r0, [r1, r2] 70#endif /* __ARMEB__ */ 71 mov pc, lr 72END(ixp425_pci_mem_bs_r_2) 73 74ENTRY(ixp425_pci_mem_bs_r_4) 75 ldr r0, [r1, r2] 76 mov pc, lr 77END(ixp425_pci_mem_bs_r_4) 78 79/* 80 * write single 81 */ 82 83ENTRY(ixp425_pci_mem_bs_w_1) 84#ifdef __ARMEB__ 85 add r1, r1, r2 86 eor r1, r1, #0x3 87 strb r3, [r1] 88#else 89 strb r3, [r1, r2] 90#endif /* __ARMEB__ */ 91 mov pc, lr 92END(ixp425_pci_mem_bs_w_1) 93 94ENTRY(ixp425_pci_mem_bs_w_2) 95#ifdef __ARMEB__ 96 add r1, r1, r2 97 eor r1, r1, #0x2 98 strh r3, [r1] 99#else 100 strh r3, [r1, r2] 101#endif /* __ARMEB__ */ 102 mov pc, lr 103END(ixp425_pci_mem_bs_w_2) 104 105ENTRY(ixp425_pci_mem_bs_w_4) 106 str r3, [r1, r2] 107 mov pc, lr 108END(ixp425_pci_mem_bs_w_4) 109