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Blackfin: sync MMR read/write helpers with Linux

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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2011-05-14 10:20:25 -04:00
parent 95b4b9d97a
commit 7ed998f629
1 changed files with 45 additions and 49 deletions
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94
arch/blackfin/include/asm/blackfin_local.h
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@ -93,65 +93,61 @@ extern void blackfin_dcache_flush_invalidate_range(const void *, const void *);
# define NOP_PAD_ANOMALY_05000198
#endif
#define bfin_read8(addr) ({ \
uint8_t __v; \
#define _bfin_readX(addr, size, asm_size, asm_ext) ({ \
u32 __v; \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
"%0 = b[%1] (z);" \
"%0 = " #asm_size "[%1]" #asm_ext ";" \
: "=d" (__v) \
: "a" (addr) \
); \
__v; })
#define _bfin_writeX(addr, val, size, asm_size) \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
#asm_size "[%0] = %1;" \
: \
: "a" (addr), "d" ((u##size)(val)) \
: "memory" \
)
#define bfin_read16(addr) ({ \
uint16_t __v; \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
"%0 = w[%1] (z);" \
: "=d" (__v) \
: "a" (addr) \
); \
__v; })
#define bfin_read8(addr) _bfin_readX(addr, 8, b, (z))
#define bfin_read16(addr) _bfin_readX(addr, 16, w, (z))
#define bfin_read32(addr) _bfin_readX(addr, 32, , )
#define bfin_write8(addr, val) _bfin_writeX(addr, val, 8, b)
#define bfin_write16(addr, val) _bfin_writeX(addr, val, 16, w)
#define bfin_write32(addr, val) _bfin_writeX(addr, val, 32, )
#define bfin_read32(addr) ({ \
uint32_t __v; \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
"%0 = [%1];" \
: "=d" (__v) \
: "a" (addr) \
); \
__v; })
#define bfin_read(addr) \
({ \
sizeof(*(addr)) == 1 ? bfin_read8(addr) : \
sizeof(*(addr)) == 2 ? bfin_read16(addr) : \
sizeof(*(addr)) == 4 ? bfin_read32(addr) : \
({ BUG(); 0; }); \
})
#define bfin_write(addr, val) \
do { \
switch (sizeof(*(addr))) { \
case 1: bfin_write8(addr, val); break; \
case 2: bfin_write16(addr, val); break; \
case 4: bfin_write32(addr, val); break; \
default: BUG(); \
} \
} while (0)
#define bfin_write_or(addr, bits) \
do { \
typeof(addr) __addr = (addr); \
bfin_write(__addr, bfin_read(__addr) | (bits)); \
} while (0)
#define bfin_write_and(addr, bits) \
do { \
typeof(addr) __addr = (addr); \
bfin_write(__addr, bfin_read(__addr) & (bits)); \
} while (0)
#define bfin_readPTR(addr) bfin_read32(addr)
#define bfin_write8(addr, val) \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
"b[%0] = %1;" \
: \
: "a" (addr), "d" (val) \
: "memory" \
)
#define bfin_write16(addr, val) \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
"w[%0] = %1;" \
: \
: "a" (addr), "d" (val) \
: "memory" \
)
#define bfin_write32(addr, val) \
__asm__ __volatile__( \
NOP_PAD_ANOMALY_05000198 \
"[%0] = %1;" \
: \
: "a" (addr), "d" (val) \
: "memory" \
)
#define bfin_writePTR(addr, val) bfin_write32(addr, val)
/* SSYNC implementation for C file */