Add AVR32 architecture support

Patch by Haavard Skinnemoen, 6 Sep 2006 16:23:02 +0200

This patch adds common infrastructure code for the Atmel AVR32
architecture. See doc/README.AVR32 for details.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 92 insertions, 0 deletions

diff --git a/include/asm-avr32/io.h b/include/asm-avr32/io.h
new file mode 100644
index 0000000..e86c456
--- /dev/null
+++ b/include/asm-avr32/io.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2006 Atmel Corporation
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#ifndef __ASM_AVR32_IO_H
+#define __ASM_AVR32_IO_H
+
+#ifdef __KERNEL__
+
+/*
+ * Generic IO read/write.  These perform native-endian accesses.  Note
+ * that some architectures will want to re-define __raw_{read,write}w.
+ */
+extern void __raw_writesb(unsigned int addr, const void *data, int bytelen);
+extern void __raw_writesw(unsigned int addr, const void *data, int wordlen);
+extern void __raw_writesl(unsigned int addr, const void *data, int longlen);
+
+extern void __raw_readsb(unsigned int addr, void *data, int bytelen);
+extern void __raw_readsw(unsigned int addr, void *data, int wordlen);
+extern void __raw_readsl(unsigned int addr, void *data, int longlen);
+
+#define __raw_writeb(v,a)       (*(volatile unsigned char  *)(a) = (v))
+#define __raw_writew(v,a)       (*(volatile unsigned short *)(a) = (v))
+#define __raw_writel(v,a)       (*(volatile unsigned int   *)(a) = (v))
+
+#define __raw_readb(a)          (*(volatile unsigned char  *)(a))
+#define __raw_readw(a)          (*(volatile unsigned short *)(a))
+#define __raw_readl(a)          (*(volatile unsigned int   *)(a))
+
+/* As long as I/O is only performed in P4 (or possibly P3), we're safe */
+#define writeb(v,a)		__raw_writeb(v,a)
+#define writew(v,a)		__raw_writew(v,a)
+#define writel(v,a)		__raw_writel(v,a)
+
+#define readb(a)		__raw_readb(a)
+#define readw(a)		__raw_readw(a)
+#define readl(a)		__raw_readl(a)
+
+/*
+ * Bad read/write accesses...
+ */
+extern void __readwrite_bug(const char *fn);
+
+#define IO_SPACE_LIMIT	0xffffffff
+
+/*
+ * All I/O is memory mapped, so these macros doesn't make very much sense
+ */
+#define outb(v,p)		__raw_writeb(v, p)
+#define outw(v,p)		__raw_writew(cpu_to_le16(v),p)
+#define outl(v,p)		__raw_writel(cpu_to_le32(v),p)
+
+#define inb(p)	({ unsigned int __v = __raw_readb(p); __v; })
+#define inw(p)	({ unsigned int __v = __le16_to_cpu(__raw_readw(p)); __v; })
+#define inl(p)	({ unsigned int __v = __le32_to_cpu(__raw_readl(p)); __v; })
+
+#include <asm/addrspace.h>
+
+/* virt_to_phys will only work when address is in P1 or P2 */
+static __inline__ unsigned long virt_to_phys(volatile void *address)
+{
+	return PHYSADDR(address);
+}
+
+static __inline__ void * phys_to_virt(unsigned long address)
+{
+	return (void *)P1SEGADDR(address);
+}
+
+#define cached(addr) ((void *)P1SEGADDR(addr))
+#define uncached(addr) ((void *)P2SEGADDR(addr))
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_AVR32_IO_H */