Since we do these sorts of operations a lot, it is useful to have a simpler API, similar to clrsetbits_le32().
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v3: - Add msr_clrbits_64() too
Changes in v2: None
arch/x86/include/asm/msr.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+)
diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h index 1955a75..c480920 100644 --- a/arch/x86/include/asm/msr.h +++ b/arch/x86/include/asm/msr.h @@ -128,6 +128,34 @@ static inline void wrmsr(unsigned msr, unsigned low, unsigned high) #define wrmsrl(msr, val) \ native_write_msr((msr), (u32)((u64)(val)), (u32)((u64)(val) >> 32))
+static inline void msr_clrsetbits_64(unsigned msr, u64 clear, u64 set) +{ + u64 val; + + val = native_read_msr(msr); + val &= ~clear; + val |= set; + wrmsrl(msr, val); +} + +static inline void msr_setbits_64(unsigned msr, u64 set) +{ + u64 val; + + val = native_read_msr(msr); + val |= set; + wrmsrl(msr, val); +} + +static inline void msr_clrbits_64(unsigned msr, u64 clear) +{ + u64 val; + + val = native_read_msr(msr); + val &= ~clear; + wrmsrl(msr, val); +} + /* rdmsr with exception handling */ #define rdmsr_safe(msr, p1, p2) \ ({ \