Commit 15e97834 authored by Daniel Verkamp's avatar Daniel Verkamp Committed by Jim Harris
Browse files

mmio: add functions for 1 and 2 byte I/O accesses 



Change-Id: I7a325ddd8db3424207cf2e561c6d6e894f549989
Signed-off-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/382073


Tested-by: default avatarSPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarChangpeng Liu <changpeng.liu@intel.com>
Reviewed-by: default avatarDariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
parent 201c0188

include/spdk/mmio.h

+28 −0
Original line number Diff line number Diff line
@@ -52,6 +52,34 @@ extern "C" { 
#define SPDK_MMIO_64BIT	0

#endif



static inline uint8_t

spdk_mmio_read_1(const volatile uint8_t *addr)

{

	spdk_compiler_barrier();

	return *addr;

}



static inline void

spdk_mmio_write_1(volatile uint8_t *addr, uint8_t val)

{

	spdk_compiler_barrier();

	*addr = val;

}



static inline uint16_t

spdk_mmio_read_2(const volatile uint16_t *addr)

{

	spdk_compiler_barrier();

	return *addr;

}



static inline void

spdk_mmio_write_2(volatile uint16_t *addr, uint16_t val)

{

	spdk_compiler_barrier();

	*addr = val;

}



static inline uint32_t

spdk_mmio_read_4(const volatile uint32_t *addr)

{