The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/arm/xscale/ixp425/ixp425_pci_asm.S

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    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/9.0/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 
   52 ENTRY(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 
   62 ENTRY(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 
   72 ENTRY(ixp425_pci_mem_bs_r_4)
   73         ldr     r0, [r1, r2]
   74         mov     pc, lr
   75 
   76 /*
   77  * write single
   78  */
   79 
   80 ENTRY(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 
   90 ENTRY(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 
  100 ENTRY(ixp425_pci_mem_bs_w_4)
  101         str     r3, [r1, r2]
  102         mov     pc, lr

Cache object: 0f18581d4d443edc7945e1ce0f2d62a3


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