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devreg.h revision 1.2 
      1 /*	$NetBSD: devreg.h,v 1.2 2002/04/28 17:10:34 uch Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *        This product includes software developed by the NetBSD
     18  *        Foundation, Inc. and its contributors.
     19  * 4. Neither the name of The NetBSD Foundation nor the names of its
     20  *    contributors may be used to endorse or promote products derived
     21  *    from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     33  * POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 
     36 #ifndef _SH3_DEVREG_H_
     37 #define	_SH3_DEVREG_H_
     38 /*
     39  * SH embeded device register defines.
     40  */
     41 
     42 /*
     43  * Access method
     44  */
     45 #define	_reg_read_1(a)		(*(__volatile__ u_int8_t *)((vaddr_t)(a)))
     46 #define	_reg_read_2(a)		(*(__volatile__ u_int16_t *)((vaddr_t)(a)))
     47 #define	_reg_read_4(a)		(*(__volatile__ u_int32_t *)((vaddr_t)(a)))
     48 #define	_reg_write_1(a, v)						\
     49 	(*(__volatile__ u_int8_t *)(a) = (u_int8_t)(v))
     50 #define	_reg_write_2(a, v)						\
     51 	(*(__volatile__ u_int16_t *)(a) = (u_int16_t)(v))
     52 #define	_reg_write_4(a, v)						\
     53 	(*(__volatile__ u_int32_t *)(a) = (u_int32_t)(v))
     54 
     55 /*
     56  * Register address.
     57  */
     58 #if defined(SH3) && defined(SH4)
     59 #define	SH_(x)		__sh_ ## x
     60 #elif defined(SH3)
     61 #define	SH_(x)		SH3_ ## x
     62 #elif defined(SH4)
     63 #define	SH_(x)		SH4_ ## x
     64 #endif
     65 
     66 #ifndef _LOCORE
     67 /* Initialize register address for SH3 && SH4 kernel. */
     68 void sh_devreg_init(void);
     69 #endif
     70 #endif /* !_SH3_DEVREG_H_ */
     71