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/*
* linux/include/asm-m68k/raw_io.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 */
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