patch-2.4.6 linux/include/asm-m68k/raw_io.h

• Lines: 243
• Date: Mon Jun 11 19:15:27 2001
• Orig file: v2.4.5/linux/include/asm-m68k/raw_io.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.5/linux/include/asm-m68k/raw_io.h linux/include/asm-m68k/raw_io.h
@@ -0,0 +1,242 @@
+/*
+ * linux/include/asm-m68k/io_native.h 
+ *
+ * 10/20/00 RZ: - created from bits of io.h and ide.h to cleanup namespace
+ *
+ */
+
+#ifndef _RAW_IO_H
+#define _RAW_IO_H
+
+#ifdef __KERNEL__
+
+
+/* ++roman: The assignments to temp. vars avoid that gcc sometimes generates
+ * two accesses to memory, which may be undesirable for some devices.
+ */
+#define in_8(addr) \
+    ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
+#define in_be16(addr) \
+    ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
+#define in_be32(addr) \
+    ({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; })
+
+#define out_8(addr,b) (void)((*(volatile unsigned char *) (addr)) = (b))
+#define out_be16(addr,b) (void)((*(volatile unsigned short *) (addr)) = (b))
+#define out_be32(addr,b) (void)((*(volatile unsigned int *) (addr)) = (b))
+
+#define raw_inb in_8
+#define raw_inw in_be16
+#define raw_inl in_be32
+
+#define raw_outb(val,port) out_8((port),(val))
+#define raw_outw(val,port) out_be16((port),(val))
+#define raw_outl(val,port) out_be32((port),(val))
+
+#define raw_insb(port, buf, len) ({	   \
+	volatile unsigned char *_port = (volatile unsigned char *) (port);   \
+        unsigned char *_buf =(unsigned char *)(buf);	   \
+        unsigned int  _i,_len=(unsigned int)(len);	   \
+        for(_i=0; _i< _len; _i++)  \
+           *_buf++=in_8(_port);      \
+  })
+
+#define raw_outsb(port, buf, len) ({	   \
+	volatile unsigned char *_port = (volatile unsigned char *) (port);   \
+        unsigned char *_buf =(unsigned char *)(buf);	   \
+        unsigned int  _i,_len=(unsigned int)(len);	   \
+        for( _i=0; _i< _len; _i++)  \
+           out_8(_port,*_buf++);      \
+  })
+ 
+
+#define raw_insw(port, buf, nr) ({				\
+	volatile unsigned char *_port = (volatile unsigned char *) (port);	\
+	unsigned char *_buf = (unsigned char *)(buf);			\
+	unsigned int _nr = (unsigned int)(nr);					\
+	unsigned long _tmp;				\
+							\
+	if (_nr & 15) {					\
+		_tmp = (_nr & 15) - 1;			\
+		asm volatile (				\
+			"1: movew %2@,%0@+; dbra %1,1b"	\
+			: "=a" (_buf), "=d" (_tmp)	\
+			: "a" (_port), "0" (_buf),	\
+			  "1" (_tmp));			\
+	}						\
+	if (_nr >> 4) {					\
+		_tmp = (_nr >> 4) - 1;			\
+		asm volatile (				\
+			"1: "				\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"movew %2@,%0@+; "		\
+			"dbra %1,1b"			\
+			: "=a" (_buf), "=d" (_tmp)	\
+			: "a" (_port), "0" (_buf),	\
+			  "1" (_tmp));			\
+	}						\
+})
+
+#define raw_outsw(port, buf, nr) ({				\
+	volatile unsigned char *_port = (volatile unsigned char *) (port);	\
+	unsigned char *_buf = (unsigned char *)(buf);			\
+	unsigned int _nr = (unsigned int)(nr);					\
+	unsigned long _tmp;				\
+							\
+	if (_nr & 15) {					\
+		_tmp = (_nr & 15) - 1;			\
+		asm volatile (				\
+			"1: movew %0@+,%2@; dbra %1,1b"	\
+			: "=a" (_buf), "=d" (_tmp)	\
+			: "a" (_port), "0" (_buf),	\
+			  "1" (_tmp));			\
+	}						\
+	if (_nr >> 4) {					\
+		_tmp = (_nr >> 4) - 1;			\
+		asm volatile (				\
+			"1: "				\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"movew %0@+,%2@; "		\
+			"dbra %1,1b"	   		\
+			: "=a" (_buf), "=d" (_tmp)	\
+			: "a" (_port), "0" (_buf),	\
+			  "1" (_tmp));			\
+	}						\
+})
+
+
+#define raw_insw_swapw(port, buf, nr) \
+({  if ((nr) % 8) \
+	__asm__ __volatile__ \
+	       ("movel %0,%/a0; \
+		 movel %1,%/a1; \
+		 movel %2,%/d6; \
+		 subql #1,%/d6; \
+	       1:movew %/a0@,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a1@+; \
+		 dbra %/d6,1b"  \
+		:               \
+		: "g" (port), "g" (buf), "g" (nr) \
+		: "d0", "a0", "a1", "d6"); \
+    else \
+	__asm__ __volatile__ \
+	       ("movel %0,%/a0; \
+		 movel %1,%/a1; \
+		 movel %2,%/d6; \
+		 lsrl  #3,%/d6; \
+		 subql #1,%/d6; \
+	       1:movew %/a0@,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a1@+; \
+		 movew %/a0@,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a1@+; \
+		 movew %/a0@,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a1@+; \
+		 movew %/a0@,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a1@+; \
+		 movew %/a0@,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a1@+; \
+		 movew %/a0@,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a1@+; \
+		 movew %/a0@,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a1@+; \
+		 movew %/a0@,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a1@+; \
+		 dbra %/d6,1b"  \
+                :               \
+		: "g" (port), "g" (buf), "g" (nr) \
+		: "d0", "a0", "a1", "d6"); \
+})
+
+
+#define raw_outsw_swapw(port, buf, nr) \
+({  if ((nr) % 8) \
+	__asm__ __volatile__ \
+	       ("movel %0,%/a0; \
+		 movel %1,%/a1; \
+		 movel %2,%/d6; \
+		 subql #1,%/d6; \
+	       1:movew %/a1@+,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a0@; \
+		 dbra %/d6,1b"  \
+                :               \
+		: "g" (port), "g" (buf), "g" (nr) \
+		: "d0", "a0", "a1", "d6"); \
+    else \
+	__asm__ __volatile__ \
+	       ("movel %0,%/a0; \
+		 movel %1,%/a1; \
+		 movel %2,%/d6; \
+		 lsrl  #3,%/d6; \
+		 subql #1,%/d6; \
+	       1:movew %/a1@+,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a0@; \
+		 movew %/a1@+,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a0@; \
+		 movew %/a1@+,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a0@; \
+		 movew %/a1@+,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a0@; \
+		 movew %/a1@+,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a0@; \
+		 movew %/a1@+,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a0@; \
+		 movew %/a1@+,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a0@; \
+		 movew %/a1@+,%/d0; \
+		 rolw  #8,%/d0; \
+		 movew %/d0,%/a0@; \
+		 dbra %/d6,1b"  \
+                :               \
+		: "g" (port), "g" (buf), "g" (nr) \
+		: "d0", "a0", "a1", "d6"); \
+})
+
+
+#endif /* __KERNEL__ */
+
+#endif /* _RAW_IO_H */