sys/arch/sh3/include/devreg.h

   1 /*      $NetBSD: devreg.h,v 1.5 2006/01/21 04:57:07 uwe 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  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef _SH3_DEVREG_H_
  30 #define _SH3_DEVREG_H_
  31 /*
  32  * SH embeded device register defines.
  33  */
  34
  35 /*
  36  * Access method
  37  */
  38 #define _reg_read_1(a)          (*(volatile uint8_t *)((vaddr_t)(a)))
  39 #define _reg_read_2(a)          (*(volatile uint16_t *)((vaddr_t)(a)))
  40 #define _reg_read_4(a)          (*(volatile uint32_t *)((vaddr_t)(a)))
  41 #define _reg_write_1(a, v)                                              \
  42         (*(volatile uint8_t *)(a)  = (uint8_t)(v))
  43 #define _reg_write_2(a, v)                                              \
  44         (*(volatile uint16_t *)(a) = (uint16_t)(v))
  45 #define _reg_write_4(a, v)                                              \
  46         (*(volatile uint32_t *)(a) = (uint32_t)(v))
  47 #define _reg_bset_1(a, v)                                               \
  48         (*(volatile uint8_t *)(a)  |= (uint8_t)(v))
  49 #define _reg_bset_2(a, v)                                               \
  50         (*(volatile uint16_t *)(a) |= (uint16_t)(v))
  51 #define _reg_bset_4(a, v)                                               \
  52         (*(volatile uint32_t *)(a) |= (uint32_t)(v))
  53 #define _reg_bclr_1(a, v)                                               \
  54         (*(volatile uint8_t *)(a)  &= ~(uint8_t)(v))
  55 #define _reg_bclr_2(a, v)                                               \
  56         (*(volatile uint16_t *)(a) &= ~(uint16_t)(v))
  57 #define _reg_bclr_4(a, v)                                               \
  58         (*(volatile uint32_t *)(a) &= ~(uint32_t)(v))
  59
  60 /*
  61  * Register address.
  62  */
  63 #if defined(SH3) && defined(SH4)
  64 #define SH_(x)          __sh_ ## x
  65 #elif defined(SH3)
  66 #define SH_(x)          SH3_ ## x
  67 #elif defined(SH4)
  68 #define SH_(x)          SH4_ ## x
  69 #endif
  70
  71 #ifndef _LOCORE
  72 /* Initialize register address for SH3 && SH4 kernel. */
  73 void sh_devreg_init(void);
  74 #endif
  75 #endif /* !_SH3_DEVREG_H_ */