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becc_pci_space_asm.S revision 1.1 
      1 /*	$NetBSD: becc_pci_space_asm.S,v 1.1 2003/05/30 18:38:02 thorpej 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 BECC 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 
     50 ENTRY(becc_pci_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 
     60 ENTRY(becc_pci_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 
     70 ENTRY(becc_pci_bs_r_4)
     71 	ldr	r0, [r1, r2]
     72 	mov	pc, lr
     73 
     74 /*
     75  * write single
     76  */
     77 
     78 ENTRY(becc_pci_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 
     88 ENTRY(becc_pci_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 
     98 ENTRY(becc_pci_bs_w_4)
     99 	str	r3, [r1, r2]
    100 	mov	pc, lr
    101