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| author | Daniel Schwierzeck <daniel.schwierzeck@gmail.com> | 2016-01-15 15:54:48 +0100 |
|---|---|---|
| committer | Daniel Schwierzeck <daniel.schwierzeck@gmail.com> | 2016-01-16 21:06:46 +0100 |
| commit | 0e0efb40b874633360967f532eb1ed59ad02adbe (patch) | |
| tree | 2384727dae26db7a47e59e0b7a9595d355a661cf /arch/mips | |
| parent | 898582bdee50d6bfeb669238371c10ec0047da06 (diff) | |
| download | talos-obmc-uboot-0e0efb40b874633360967f532eb1ed59ad02adbe.tar.gz talos-obmc-uboot-0e0efb40b874633360967f532eb1ed59ad02adbe.zip | |
MIPS: implement bit manipulating I/O accessors
Add support for functions clrbits_X(), setbits_X() and clrsetbits_X()
on MIPS.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/asm/io.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h index eb06afafae..b8ac5a5ac5 100644 --- a/arch/mips/include/asm/io.h +++ b/arch/mips/include/asm/io.h @@ -541,4 +541,59 @@ static inline void unmap_physmem(void *vaddr, unsigned long flags) { } +#define __BUILD_CLRBITS(bwlq, sfx, end, type) \ + \ +static inline void clrbits_##sfx(volatile void __iomem *mem, type clr) \ +{ \ + type __val = __raw_read##bwlq(mem); \ + __val = end##_to_cpu(__val); \ + __val &= ~clr; \ + __val = cpu_to_##end(__val); \ + __raw_write##bwlq(__val, mem); \ +} + +#define __BUILD_SETBITS(bwlq, sfx, end, type) \ + \ +static inline void setbits_##sfx(volatile void __iomem *mem, type set) \ +{ \ + type __val = __raw_read##bwlq(mem); \ + __val = end##_to_cpu(__val); \ + __val |= set; \ + __val = cpu_to_##end(__val); \ + __raw_write##bwlq(__val, mem); \ +} + +#define __BUILD_CLRSETBITS(bwlq, sfx, end, type) \ + \ +static inline void clrsetbits_##sfx(volatile void __iomem *mem, \ + type clr, type set) \ +{ \ + type __val = __raw_read##bwlq(mem); \ + __val = end##_to_cpu(__val); \ + __val &= ~clr; \ + __val |= set; \ + __val = cpu_to_##end(__val); \ + __raw_write##bwlq(__val, mem); \ +} + +#define BUILD_CLRSETBITS(bwlq, sfx, end, type) \ + \ +__BUILD_CLRBITS(bwlq, sfx, end, type) \ +__BUILD_SETBITS(bwlq, sfx, end, type) \ +__BUILD_CLRSETBITS(bwlq, sfx, end, type) + +#define __to_cpu(v) (v) +#define cpu_to__(v) (v) + +BUILD_CLRSETBITS(b, 8, _, u8) +BUILD_CLRSETBITS(w, le16, le16, u16) +BUILD_CLRSETBITS(w, be16, be16, u16) +BUILD_CLRSETBITS(w, 16, _, u16) +BUILD_CLRSETBITS(l, le32, le32, u32) +BUILD_CLRSETBITS(l, be32, be32, u32) +BUILD_CLRSETBITS(l, 32, _, u32) +BUILD_CLRSETBITS(q, le64, le64, u64) +BUILD_CLRSETBITS(q, be64, be64, u64) +BUILD_CLRSETBITS(q, 64, _, u64) + #endif /* _ASM_IO_H */ |
