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eal: add generic I/O device read/write implementation

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This patch implements the generic version of rte_read[b/w/l/q]_[relaxed]
and rte_write[b/w/l/q]_[relaxed] using rte_io_wmb() and rte_io_rmb()

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
This commit is contained in:
Jerin Jacob 2017-01-18 06:51:24 +05:30 committed by Thomas Monjalon
parent 69736db1d8
commit 4540fbb2ae
1 changed files with 118 additions and 0 deletions
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118
lib/librte_eal/common/include/generic/rte_io.h
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@ -34,6 +34,8 @@
#ifndef _RTE_IO_H_
#define _RTE_IO_H_
#include <rte_atomic.h>
/**
* @file
* I/O device memory operations
@ -260,4 +262,120 @@ rte_write64(uint64_t value, volatile void *addr);
#endif /* __DOXYGEN__ */
#ifndef RTE_OVERRIDE_IO_H
static inline uint8_t __attribute__((always_inline))
rte_read8_relaxed(const volatile void *addr)
{
return *(const volatile uint8_t *)addr;
}
static inline uint16_t __attribute__((always_inline))
rte_read16_relaxed(const volatile void *addr)
{
return *(const volatile uint16_t *)addr;
}
static inline uint32_t __attribute__((always_inline))
rte_read32_relaxed(const volatile void *addr)
{
return *(const volatile uint32_t *)addr;
}
static inline uint64_t __attribute__((always_inline))
rte_read64_relaxed(const volatile void *addr)
{
return *(const volatile uint64_t *)addr;
}
static inline void __attribute__((always_inline))
rte_write8_relaxed(uint8_t value, volatile void *addr)
{
*(volatile uint8_t *)addr = value;
}
static inline void __attribute__((always_inline))
rte_write16_relaxed(uint16_t value, volatile void *addr)
{
*(volatile uint16_t *)addr = value;
}
static inline void __attribute__((always_inline))
rte_write32_relaxed(uint32_t value, volatile void *addr)
{
*(volatile uint32_t *)addr = value;
}
static inline void __attribute__((always_inline))
rte_write64_relaxed(uint64_t value, volatile void *addr)
{
*(volatile uint64_t *)addr = value;
}
static inline uint8_t __attribute__((always_inline))
rte_read8(const volatile void *addr)
{
uint8_t val;
val = rte_read8_relaxed(addr);
rte_io_rmb();
return val;
}
static inline uint16_t __attribute__((always_inline))
rte_read16(const volatile void *addr)
{
uint16_t val;
val = rte_read16_relaxed(addr);
rte_io_rmb();
return val;
}
static inline uint32_t __attribute__((always_inline))
rte_read32(const volatile void *addr)
{
uint32_t val;
val = rte_read32_relaxed(addr);
rte_io_rmb();
return val;
}
static inline uint64_t __attribute__((always_inline))
rte_read64(const volatile void *addr)
{
uint64_t val;
val = rte_read64_relaxed(addr);
rte_io_rmb();
return val;
}
static inline void __attribute__((always_inline))
rte_write8(uint8_t value, volatile void *addr)
{
rte_io_wmb();
rte_write8_relaxed(value, addr);
}
static inline void __attribute__((always_inline))
rte_write16(uint16_t value, volatile void *addr)
{
rte_io_wmb();
rte_write16_relaxed(value, addr);
}
static inline void __attribute__((always_inline))
rte_write32(uint32_t value, volatile void *addr)
{
rte_io_wmb();
rte_write32_relaxed(value, addr);
}
static inline void __attribute__((always_inline))
rte_write64(uint64_t value, volatile void *addr)
{
rte_io_wmb();
rte_write64_relaxed(value, addr);
}
#endif /* RTE_OVERRIDE_IO_H */
#endif /* _RTE_IO_H_ */