From 0c1c117cf18ffa3fdc0342dfc47c6003fc5fc5a0 Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Wed, 30 Mar 2005 23:28:18 +0000
Subject: * Patch by Scott McNutt, 21 Oct 2004:   Add support for Nios-II EPCS
 Controller core.

* Patch by Scott McNutt, 20 Oct 2004:
  Nios-II cleanups:
  - Add sysid command (Nios-II only).
  - Locate default exception trampoline at proper offset.
  - Implement I/O routines (readb, writeb, etc)
  - Implement do_bootm_linux
---
 include/asm-nios2/io.h | 59 +++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 56 insertions(+), 3 deletions(-)

(limited to 'include/asm-nios2')

diff --git a/include/asm-nios2/io.h b/include/asm-nios2/io.h
index c2c8ffcc3f..b16a98865a 100644
--- a/include/asm-nios2/io.h
+++ b/include/asm-nios2/io.h
@@ -29,8 +29,61 @@
 extern unsigned char inb (unsigned char *port);
 extern unsigned short inw (unsigned short *port);
 extern unsigned inl (unsigned port);
-extern void outb (unsigned char val, unsigned char *port);
-extern void outw (unsigned short val, unsigned short *port);
-extern void outl (unsigned val, unsigned port);
+
+#define readb(addr)\
+	({unsigned char val;\
+	 asm volatile( "ldbio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
+#define readw(addr)\
+	({unsigned short val;\
+	 asm volatile( "ldhio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
+#define readl(addr)\
+	({unsigned long val;\
+	 asm volatile( "ldwio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
+#define writeb(addr,val)\
+	asm volatile ("stbio %0, 0(%1)" : : "r" (addr), "r" (val))
+#define writew(addr,val)\
+	asm volatile ("sthio %0, 0(%1)" : : "r" (addr), "r" (val))
+#define writel(addr,val)\
+	asm volatile ("stwio %0, 0(%1)" : : "r" (addr), "r" (val))
+
+#define inb(addr)	readb(addr)
+#define inw(addr)	readw(addr)
+#define inl(addr)	readl(addr)
+#define outb(addr,val)	writeb(addr,val)
+#define outw(addr,val)	writew(addr,val)
+#define outl(addr,val)	writel(addr,val)
+
+static inline void insb (unsigned long port, void *dst, unsigned long count)
+{
+	unsigned char *p = dst;
+	while (count--) *p++ = inb (port);
+}
+static inline void insw (unsigned long port, void *dst, unsigned long count)
+{
+	unsigned short *p = dst;
+	while (count--) *p++ = inw (port);
+}
+static inline void insl (unsigned long port, void *dst, unsigned long count)
+{
+	unsigned long *p = dst;
+	while (count--) *p++ = inl (port);
+}
+
+static inline void outsb (unsigned long port, const void *src, unsigned long count)
+{
+	const unsigned char *p = src;
+	while (count--) outb (*p++, port);
+}
+
+static inline void outsw (unsigned long port, const void *src, unsigned long count)
+{
+	const unsigned short *p = src;
+	while (count--) outw (*p++, port);
+}
+static inline void outsl (unsigned long port, const void *src, unsigned long count)
+{
+	const unsigned long *p = src;
+	while (count--) outl (*p++, port);
+}
 
 #endif /* __ASM_NIOS2_IO_H_ */
-- 
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