diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2011-05-14 10:20:25 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-07-12 02:17:45 -0400 |
| commit | 7ed998f629d00abb2aa97805346d4d2e9dbe71d7 (patch) | |
| tree | a246faa175a2f0c7bf05f45edd2398e0e82269ce /arch/blackfin/include | |
| parent | 95b4b9d97a5bb6a93ec269cb9cf85e95a8f8295d (diff) | |
Blackfin: sync MMR read/write helpers with Linux
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/include')
| -rw-r--r-- | arch/blackfin/include/asm/blackfin_local.h | 88 |
1 files changed, 42 insertions, 46 deletions
diff --git a/arch/blackfin/include/asm/blackfin_local.h b/arch/blackfin/include/asm/blackfin_local.h index 48f793a4ce..27034d3d06 100644 --- a/arch/blackfin/include/asm/blackfin_local.h +++ b/arch/blackfin/include/asm/blackfin_local.h @@ -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_read16(addr) ({ \ - uint16_t __v; \ - __asm__ __volatile__( \ - NOP_PAD_ANOMALY_05000198 \ - "%0 = w[%1] (z);" \ - : "=d" (__v) \ - : "a" (addr) \ - ); \ - __v; }) - -#define bfin_read32(addr) ({ \ - uint32_t __v; \ +#define _bfin_writeX(addr, val, size, asm_size) \ __asm__ __volatile__( \ NOP_PAD_ANOMALY_05000198 \ - "%0 = [%1];" \ - : "=d" (__v) \ - : "a" (addr) \ - ); \ - __v; }) - -#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;" \ + #asm_size "[%0] = %1;" \ : \ - : "a" (addr), "d" (val) \ + : "a" (addr), "d" ((u##size)(val)) \ : "memory" \ ) -#define bfin_write32(addr, val) \ - __asm__ __volatile__( \ - NOP_PAD_ANOMALY_05000198 \ - "[%0] = %1;" \ - : \ - : "a" (addr), "d" (val) \ - : "memory" \ - ) +#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_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_writePTR(addr, val) bfin_write32(addr, val) /* SSYNC implementation for C file */ |