diff options
Diffstat (limited to 'cpukit/score/cpu/sh/rtems/score/sh_io.h')
-rw-r--r-- | cpukit/score/cpu/sh/rtems/score/sh_io.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/cpukit/score/cpu/sh/rtems/score/sh_io.h b/cpukit/score/cpu/sh/rtems/score/sh_io.h new file mode 100644 index 0000000000..2b58aae62a --- /dev/null +++ b/cpukit/score/cpu/sh/rtems/score/sh_io.h @@ -0,0 +1,51 @@ +/** + * @file rtems/score/sh_io.h + */ + +/* + * These are some macros to access memory mapped devices + * on the SH7000-architecture. + * + * Inspired from the linux kernel's include/asm/io.h + * + * Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and + * Bernd Becker (becker@faw.uni-ulm.de) + * + * COPYRIGHT (c) 1996-1998, FAW Ulm, Germany + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * + * COPYRIGHT (c) 1998-2001. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#ifndef _RTEMS_SCORE_SH_IO_H +#define _RTEMS_SCORE_SH_IO_H + +#define readb(addr) (*(volatile unsigned char *) (addr)) +#define readw(addr) (*(volatile unsigned short *) (addr)) +#define readl(addr) (*(volatile unsigned int *) (addr)) +#define read8(addr) (*(volatile uint8_t *) (addr)) +#define read16(addr) (*(volatile uint16_t *) (addr)) +#define read32(addr) (*(volatile uint32_t *) (addr)) + +#define writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b)) +#define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b)) +#define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b)) +#define write8(b,addr) ((*(volatile uint8_t *) (addr)) = (b)) +#define write16(b,addr) ((*(volatile uint16_t *) (addr)) = (b)) +#define write32(b,addr) ((*(volatile uint32_t *) (addr)) = (b)) + +#define inb(addr) readb(addr) +#define outb(b,addr) writeb(b,addr) + +#endif |