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authorWolfgang Denk <wd@pollux.denx.de>2006-10-24 15:17:18 +0200
committerWolfgang Denk <wd@pollux.denx.de>2006-10-24 15:17:18 +0200
commit9748d5a9e8aa8bf6dd576e70894b9996c22f7003 (patch)
treebfbdfb6f1ef9d24389e19a3b47ecdc7a883af455 /include/asm-avr32/io.h
parent8318fbf8cc30418b621ea9f39b84b4c1a08f003a (diff)
parent3a78e3e75b633ecb6413114ffd11e2f000c4f11e (diff)
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Merge with /home/wd/git/u-boot/mailing-list/Haavard_Skinnemoen
Diffstat (limited to 'include/asm-avr32/io.h')
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diff --git a/include/asm-avr32/io.h b/include/asm-avr32/io.h
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+/*
+ * 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 */