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iomd_io_asm.S revision 1.1 
      1 /*	$NetBSD: iomd_io_asm.S,v 1.1 2001/10/05 22:27:41 reinoud Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997 Mark Brinicombe.
      5  * Copyright (c) 1997 Causality Limited.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by Mark Brinicombe.
     19  * 4. The name of the company nor the name of the author may be used to
     20  *    endorse or promote products derived from this software without specific
     21  *    prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     24  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     29  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <machine/asm.h>
     37 
     38 /*
     39  * bus_space I/O functions for iomd
     40  */
     41 
     42 /*
     43  * read single
     44  */
     45 
     46 ENTRY(iomd_bs_r_1)
     47 	ldrb	r0, [r1, r2, lsl #2]
     48 	mov	pc, lr
     49 
     50 ENTRY(iomd_bs_r_2)
     51 	ldr	r0, [r1, r2, lsl #2]
     52 	bic	r0, r0, #0xff000000
     53 	bic	r0, r0, #0x00ff0000
     54 	mov	pc, lr
     55 
     56 ENTRY(iomd_bs_r_4)
     57 	ldr	r0, [r1, r2, lsl #2]
     58 	mov	pc, lr
     59 
     60 /*
     61  * write single
     62  */
     63 
     64 ENTRY(iomd_bs_w_1)
     65 	strb	r3, [r1, r2, lsl #2]
     66 	mov	pc, lr
     67 
     68 ENTRY(iomd_bs_w_2)
     69 	mov	r3, r3, lsl #16
     70 	orr	r3, r3, r3, lsr #16
     71 	str	r3, [r1, r2, lsl #2]
     72 	mov	pc, lr
     73 
     74 ENTRY(iomd_bs_w_4)
     75 	str	r3, [r1, r2, lsl #2]
     76 	mov	pc, lr
     77 
     78 
     79 /*
     80  * read multiple
     81  */
     82 
     83 ENTRY(iomd_bs_rm_2)
     84 	add	r0, r1, r2, lsl #2
     85 	mov	r1, r3
     86 	ldr	r2, [sp, #0]
     87 	b	_C_LABEL(insw16)
     88 
     89 /*
     90  * write multiple
     91  */
     92 
     93 ENTRY(iomd_bs_wm_2)
     94 	add	r0, r1, r2, lsl #2
     95 	mov	r1, r3
     96 	ldr	r2, [sp, #0]
     97 	b	_C_LABEL(outsw16)
     98