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| author |   Ruchika Gupta <ruchika.gupta@freescale.com> | 2014-06-23 18:49:30 +0530 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2014-06-25 21:38:40 +0800 |
| commit | ef94b1d834aace7101de77c3a7c2631b9ae9c5f6 (patch) | |
| tree | 6a69382441f2cf8d04a3b4150821aeb6728ff3fb /drivers/crypto/caam | |
| parent | crypto: caam - Configuration for platforms with virtualization enabled in CAAM (diff) | |
| download | linux-dev-ef94b1d834aace7101de77c3a7c2631b9ae9c5f6.tar.xz linux-dev-ef94b1d834aace7101de77c3a7c2631b9ae9c5f6.zip | |
crypto: caam - Add definition of rd/wr_reg64 for little endian platform
CAAM IP has certain 64 bit registers . 32 bit architectures cannot force
atomic-64 operations. This patch adds definition of these atomic-64
operations for little endian platforms. The definitions which existed
previously were for big endian platforms.
Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/caam')
| -rw-r--r-- | drivers/crypto/caam/regs.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h index 69e3562dc7d1..f48e344ffc39 100644 --- a/drivers/crypto/caam/regs.h +++ b/drivers/crypto/caam/regs.h @@ -84,6 +84,7 @@ #endif #ifndef CONFIG_64BIT +#ifdef __BIG_ENDIAN static inline void wr_reg64(u64 __iomem *reg, u64 data) { wr_reg32((u32 __iomem *)reg, (data & 0xffffffff00000000ull) >> 32); @@ -95,6 +96,21 @@ static inline u64 rd_reg64(u64 __iomem *reg) return (((u64)rd_reg32((u32 __iomem *)reg)) << 32) | ((u64)rd_reg32((u32 __iomem *)reg + 1)); } +#else +#ifdef __LITTLE_ENDIAN +static inline void wr_reg64(u64 __iomem *reg, u64 data) +{ + wr_reg32((u32 __iomem *)reg + 1, (data & 0xffffffff00000000ull) >> 32); + wr_reg32((u32 __iomem *)reg, data & 0x00000000ffffffffull); +} + +static inline u64 rd_reg64(u64 __iomem *reg) +{ + return (((u64)rd_reg32((u32 __iomem *)reg + 1)) << 32) | + ((u64)rd_reg32((u32 __iomem *)reg)); +} +#endif +#endif #endif /* |