diff options
Diffstat (limited to 'include/asm-powerpc/io.h')
| -rw-r--r-- | include/asm-powerpc/io.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h index bb8d965..6805efb 100644 --- a/include/asm-powerpc/io.h +++ b/include/asm-powerpc/io.h @@ -734,6 +734,32 @@ static inline void * bus_to_virt(unsigned long address) #define setbits16(_addr, _v) out_be16((_addr), in_be16(_addr) | (_v)) #define clrbits16(_addr, _v) out_be16((_addr), in_be16(_addr) & ~(_v)) +#define setbits8(_addr, _v) out_8((_addr), in_8(_addr) | (_v)) +#define clrbits8(_addr, _v) out_8((_addr), in_8(_addr) & ~(_v)) + +/* Clear and set bits in one shot. These macros can be used to clear and + * set multiple bits in a register using a single read-modify-write. These + * macros can also be used to set a multiple-bit bit pattern using a mask, + * by specifying the mask in the 'clear' parameter and the new bit pattern + * in the 'set' parameter. + */ + +#define clrsetbits(type, addr, clear, set) \ + out_##type((addr), (in_##type(addr) & ~(clear)) | (set)) + +#ifdef __powerpc64__ +#define clrsetbits_be64(addr, clear, set) clrsetbits(be64, addr, clear, set) +#define clrsetbits_le64(addr, clear, set) clrsetbits(le64, addr, clear, set) +#endif + +#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set) +#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set) + +#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set) +#define clrsetbits_le16(addr, clear, set) clrsetbits(le32, addr, clear, set) + +#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) + #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_IO_H */ |
