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eal: introduce macro for bit definition

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There are several drivers which duplicate bit generation macro.
Introduce a generic bit macros so that such drivers avoid redefining
same in multiple drivers.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
This commit is contained in:
Parav Pandit 2020-07-27 20:47:06 +03:00 committed by Thomas Monjalon
parent ec0b862d5e
commit 21587b4921
1 changed files with 25 additions and 9 deletions
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34
lib/librte_eal/include/rte_bitops.h
View file

@ -17,6 +17,22 @@
#include <rte_debug.h>
#include <rte_compat.h>
/**
* Get the uint64_t value for a specified bit set.
*
* @param nr
* The bit number in range of 0 to 63.
*/
#define RTE_BIT64(nr) (UINT64_C(1) << (nr))
/**
* Get the uint32_t value for a specified bit set.
*
* @param nr
* The bit number in range of 0 to 31.
*/
#define RTE_BIT32(nr) (UINT32_C(1) << (nr))
/*------------------------ 32-bit relaxed operations ------------------------*/
/**
@ -59,7 +75,7 @@ rte_bit_relaxed_set32(unsigned int nr, volatile uint32_t *addr)
{
RTE_ASSERT(nr < 32);
uint32_t mask = UINT32_C(1) << nr;
uint32_t mask = RTE_BIT32(nr);
*addr = (*addr) | mask;
}
@ -80,7 +96,7 @@ rte_bit_relaxed_clear32(unsigned int nr, volatile uint32_t *addr)
{
RTE_ASSERT(nr < 32);
uint32_t mask = UINT32_C(1) << nr;
uint32_t mask = RTE_BIT32(nr);
*addr = (*addr) & (~mask);
}
@ -104,7 +120,7 @@ rte_bit_relaxed_test_and_set32(unsigned int nr, volatile uint32_t *addr)
{
RTE_ASSERT(nr < 32);
uint32_t mask = UINT32_C(1) << nr;
uint32_t mask = RTE_BIT32(nr);
uint32_t val = *addr;
*addr = val | mask;
return val & mask;
@ -130,7 +146,7 @@ rte_bit_relaxed_test_and_clear32(unsigned int nr, volatile uint32_t *addr)
{
RTE_ASSERT(nr < 32);
uint32_t mask = UINT32_C(1) << nr;
uint32_t mask = RTE_BIT32(nr);
uint32_t val = *addr;
*addr = val & (~mask);
return val & mask;
@ -157,7 +173,7 @@ rte_bit_relaxed_get64(unsigned int nr, volatile uint64_t *addr)
{
RTE_ASSERT(nr < 64);
uint64_t mask = UINT64_C(1) << nr;
uint64_t mask = RTE_BIT64(nr);
return (*addr) & mask;
}
@ -178,7 +194,7 @@ rte_bit_relaxed_set64(unsigned int nr, volatile uint64_t *addr)
{
RTE_ASSERT(nr < 64);
uint64_t mask = UINT64_C(1) << nr;
uint64_t mask = RTE_BIT64(nr);
(*addr) = (*addr) | mask;
}
@ -199,7 +215,7 @@ rte_bit_relaxed_clear64(unsigned int nr, volatile uint64_t *addr)
{
RTE_ASSERT(nr < 64);
uint64_t mask = UINT64_C(1) << nr;
uint64_t mask = RTE_BIT64(nr);
*addr = (*addr) & (~mask);
}
@ -223,7 +239,7 @@ rte_bit_relaxed_test_and_set64(unsigned int nr, volatile uint64_t *addr)
{
RTE_ASSERT(nr < 64);
uint64_t mask = UINT64_C(1) << nr;
uint64_t mask = RTE_BIT64(nr);
uint64_t val = *addr;
*addr = val | mask;
return val;
@ -249,7 +265,7 @@ rte_bit_relaxed_test_and_clear64(unsigned int nr, volatile uint64_t *addr)
{
RTE_ASSERT(nr < 64);
uint64_t mask = UINT64_C(1) << nr;
uint64_t mask = RTE_BIT64(nr);
uint64_t val = *addr;
*addr = val & (~mask);
return val & mask;