diff options
Diffstat (limited to 'drivers/crypto/caam/regs.h')
| -rw-r--r-- | drivers/crypto/caam/regs.h | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h index 378ddc17f..672c97489 100644 --- a/drivers/crypto/caam/regs.h +++ b/drivers/crypto/caam/regs.h @@ -83,35 +83,35 @@ #endif #endif +/* + * The only users of these wr/rd_reg64 functions is the Job Ring (JR). + * The DMA address registers in the JR are a pair of 32-bit registers. + * The layout is: + * + * base + 0x0000 : most-significant 32 bits + * base + 0x0004 : least-significant 32 bits + * + * The 32-bit version of this core therefore has to write to base + 0x0004 + * to set the 32-bit wide DMA address. This seems to be independent of the + * endianness of the written/read data. + */ + #ifndef CONFIG_64BIT -#ifdef __BIG_ENDIAN -static inline void wr_reg64(u64 __iomem *reg, u64 data) -{ - wr_reg32((u32 __iomem *)reg, (data & 0xffffffff00000000ull) >> 32); - wr_reg32((u32 __iomem *)reg + 1, data & 0x00000000ffffffffull); -} +#define REG64_MS32(reg) ((u32 __iomem *)(reg)) +#define REG64_LS32(reg) ((u32 __iomem *)(reg) + 1) -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); + wr_reg32(REG64_MS32(reg), data >> 32); + wr_reg32(REG64_LS32(reg), data); } static inline u64 rd_reg64(u64 __iomem *reg) { - return (((u64)rd_reg32((u32 __iomem *)reg + 1)) << 32) | - ((u64)rd_reg32((u32 __iomem *)reg)); + return ((u64)rd_reg32(REG64_MS32(reg)) << 32 | + (u64)rd_reg32(REG64_LS32(reg))); } #endif -#endif -#endif /* * jr_outentry |