101 lines
2.8 KiB
ArmAsm
101 lines
2.8 KiB
ArmAsm
/* $NetBSD: ixp425_pci_asm.S,v 1.1 2003/09/25 14:11:18 ichiro Exp $ */
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/*
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* Copyright (c) 2003 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <arm/asm.h>
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#include <arm/cpuconf.h>
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/*
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* Bus space functions for IXP425 PCI space access. We have to swizzle
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* the address for 1 and 2 byte accesses when in big-endian mode.
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*/
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/*
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* read single
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*/
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ENTRY(ixp425_pci_mem_bs_r_1)
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#ifdef __ARMEB__
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add r1, r1, r2
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eor r1, r1, #0x3
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ldrb r0, [r1]
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#else
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ldrb r0, [r1, r2]
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#endif /* __ARMEB__ */
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mov pc, lr
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ENTRY(ixp425_pci_mem_bs_r_2)
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#ifdef __ARMEB__
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add r1, r1, r2
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eor r1, r1, #0x2
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ldrh r0, [r1]
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#else
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ldrh r0, [r1, r2]
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#endif /* __ARMEB__ */
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mov pc, lr
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ENTRY(ixp425_pci_mem_bs_r_4)
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ldr r0, [r1, r2]
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mov pc, lr
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/*
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* write single
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*/
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ENTRY(ixp425_pci_mem_bs_w_1)
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#ifdef __ARMEB__
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add r1, r1, r2
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eor r1, r1, #0x3
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strb r3, [r1]
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#else
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strb r3, [r1, r2]
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#endif /* __ARMEB__ */
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mov pc, lr
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ENTRY(ixp425_pci_mem_bs_w_2)
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#ifdef __ARMEB__
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add r1, r1, r2
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eor r1, r1, #0x2
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strh r3, [r1]
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#else
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strh r3, [r1, r2]
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#endif /* __ARMEB__ */
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mov pc, lr
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ENTRY(ixp425_pci_mem_bs_w_4)
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str r3, [r1, r2]
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mov pc, lr
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