diff options
| -rw-r--r-- | payloads/libpayload/include/x86/arch/io.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/payloads/libpayload/include/x86/arch/io.h b/payloads/libpayload/include/x86/arch/io.h index cd48d7c35b..c417ce0c66 100644 --- a/payloads/libpayload/include/x86/arch/io.h +++ b/payloads/libpayload/include/x86/arch/io.h @@ -31,6 +31,16 @@ #ifndef _ARCH_IO_H #define _ARCH_IO_H +#include <inttypes.h> + +/* + * readb/w/l writeb/w/l are deprecated. use read8/16/32 and write8/16/32 + * instead for future development. + * + * TODO: make the existing code use read8/16/32 and write8/16/32 then remove + * readb/w/l and writeb/w/l. + */ + #define readb(_a) (*(volatile const unsigned char *) (_a)) #define readw(_a) (*(volatile const unsigned short *) (_a)) #define readl(_a) (*(volatile const unsigned int *) (_a)) @@ -39,6 +49,36 @@ #define writew(_v, _a) (*(volatile unsigned short *) (_a) = (_v)) #define writel(_v, _a) (*(volatile unsigned int *) (_a) = (_v)) +static inline __attribute__((always_inline)) uint8_t read8(const volatile void *addr) +{ + return *((volatile uint8_t *)(addr)); +} + +static inline __attribute__((always_inline)) uint16_t read16(const volatile void *addr) +{ + return *((volatile uint16_t *)(addr)); +} + +static inline __attribute__((always_inline)) uint32_t read32(const volatile void *addr) +{ + return *((volatile uint32_t *)(addr)); +} + +static inline __attribute__((always_inline)) void write8(volatile void *addr, uint8_t value) +{ + *((volatile uint8_t *)(addr)) = value; +} + +static inline __attribute__((always_inline)) void write16(volatile void *addr, uint16_t value) +{ + *((volatile uint16_t *)(addr)) = value; +} + +static inline __attribute__((always_inline)) void write32(volatile void *addr, uint32_t value) +{ + *((volatile uint32_t *)(addr)) = value; +} + static inline unsigned int inl(int port) { unsigned long val; |