diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arc/include/asm/io.h | 58 |
1 files changed, 35 insertions, 23 deletions
diff --git a/arch/arc/include/asm/io.h b/arch/arc/include/asm/io.h index a4171a3e5c..6adc0ed42b 100644 --- a/arch/arc/include/asm/io.h +++ b/arch/arc/include/asm/io.h @@ -78,21 +78,29 @@ static inline void sync(void) #define __arch_putq(v, a) ({ __comp_b(); *(volatile u64 *)(a) = (v); __comp_b(); }) -#define __raw_writeb(v, a) __arch_putb(v, a) -#define __raw_writew(v, a) __arch_putw(v, a) -#define __raw_writel(v, a) __arch_putl(v, a) -#define __raw_writeq(v, a) __arch_putq(v, a) +/* + * We add memory barriers for __raw_readX / __raw_writeX accessors same way as + * it is done for readX and writeX accessors as lots of U-boot driver uses + * __raw_readX / __raw_writeX instead of proper accessor with barrier. + */ +#define __raw_writeb(v, c) ({ __iowmb(); __arch_putb(v, c); }) +#define __raw_writew(v, c) ({ __iowmb(); __arch_putw(v, c); }) +#define __raw_writel(v, c) ({ __iowmb(); __arch_putl(v, c); }) +#define __raw_writeq(v, c) ({ __iowmb(); __arch_putq(v, c); }) + +#define __raw_readb(c) ({ u8 __v = __arch_getb(c); __iormb(); __v; }) +#define __raw_readw(c) ({ u16 __v = __arch_getw(c); __iormb(); __v; }) +#define __raw_readl(c) ({ u32 __v = __arch_getl(c); __iormb(); __v; }) +#define __raw_readq(c) ({ u64 __v = __arch_getq(c); __iormb(); __v; }) -#define __raw_readb(a) __arch_getb(a) -#define __raw_readw(a) __arch_getw(a) -#define __raw_readl(a) __arch_getl(a) -#define __raw_readq(a) __arch_getq(a) static inline void __raw_writesb(unsigned long addr, const void *data, int bytelen) { u8 *buf = (uint8_t *)data; + __iowmb(); + while (bytelen--) __arch_putb(*buf++, addr); } @@ -102,6 +110,8 @@ static inline void __raw_writesw(unsigned long addr, const void *data, { u16 *buf = (uint16_t *)data; + __iowmb(); + while (wordlen--) __arch_putw(*buf++, addr); } @@ -111,6 +121,8 @@ static inline void __raw_writesl(unsigned long addr, const void *data, { u32 *buf = (uint32_t *)data; + __iowmb(); + while (longlen--) __arch_putl(*buf++, addr); } @@ -121,6 +133,8 @@ static inline void __raw_readsb(unsigned long addr, void *data, int bytelen) while (bytelen--) *buf++ = __arch_getb(addr); + + __iormb(); } static inline void __raw_readsw(unsigned long addr, void *data, int wordlen) @@ -129,6 +143,8 @@ static inline void __raw_readsw(unsigned long addr, void *data, int wordlen) while (wordlen--) *buf++ = __arch_getw(addr); + + __iormb(); } static inline void __raw_readsl(unsigned long addr, void *data, int longlen) @@ -137,6 +153,8 @@ static inline void __raw_readsl(unsigned long addr, void *data, int longlen) while (longlen--) *buf++ = __arch_getl(addr); + + __iormb(); } /* @@ -144,21 +162,15 @@ static inline void __raw_readsl(unsigned long addr, void *data, int longlen) * ordering rules but do not guarantee any ordering relative to Normal memory * accesses. */ -#define readb_relaxed(c) ({ u8 __r = __raw_readb(c); __r; }) -#define readw_relaxed(c) ({ u16 __r = le16_to_cpu((__force __le16) \ - __raw_readw(c)); __r; }) -#define readl_relaxed(c) ({ u32 __r = le32_to_cpu((__force __le32) \ - __raw_readl(c)); __r; }) -#define readq_relaxed(c) ({ u64 __r = le64_to_cpu((__force __le64) \ - __raw_readq(c)); __r; }) - -#define writeb_relaxed(v, c) ((void)__raw_writeb((v), (c))) -#define writew_relaxed(v, c) ((void)__raw_writew((__force u16) \ - cpu_to_le16(v), (c))) -#define writel_relaxed(v, c) ((void)__raw_writel((__force u32) \ - cpu_to_le32(v), (c))) -#define writeq_relaxed(v, c) ((void)__raw_writeq((__force u64) \ - cpu_to_le64(v), (c))) +#define readb_relaxed(c) ({ u8 __r = __arch_getb(c); __r; }) +#define readw_relaxed(c) ({ u16 __r = le16_to_cpu((__force __le16)__arch_getw(c)); __r; }) +#define readl_relaxed(c) ({ u32 __r = le32_to_cpu((__force __le32)__arch_getl(c)); __r; }) +#define readq_relaxed(c) ({ u64 __r = le64_to_cpu((__force __le64)__arch_getq(c)); __r; }) + +#define writeb_relaxed(v, c) ((void)__arch_putb((v), (c))) +#define writew_relaxed(v, c) ((void)__arch_putw((__force u16)cpu_to_le16(v), (c))) +#define writel_relaxed(v, c) ((void)__arch_putl((__force u32)cpu_to_le32(v), (c))) +#define writeq_relaxed(v, c) ((void)__arch_putq((__force u64)cpu_to_le64(v), (c))) /* * MMIO can also get buffered/optimized in micro-arch, so barriers needed |