summaryrefslogtreecommitdiffstats
path: root/cpukit/score/cpu/sh/rtems/score/sh_io.h
diff options
context:
space:
mode:
Diffstat (limited to 'cpukit/score/cpu/sh/rtems/score/sh_io.h')
-rw-r--r--cpukit/score/cpu/sh/rtems/score/sh_io.h51
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