lib/librte_eal/common/include/arch/ppc_64/rte_spinlock.h

   1 /*
   2  * SPDX-License-Identifier: BSD-3-Clause
   3  * Copyright (C) IBM Corporation 2014.
   4  */
   5
   6 #ifndef _RTE_SPINLOCK_PPC_64_H_
   7 #define _RTE_SPINLOCK_PPC_64_H_
   8
   9 #ifdef __cplusplus
  10 extern "C" {
  11 #endif
  12
  13 #include <rte_common.h>
  14 #include <rte_pause.h>
  15 #include "generic/rte_spinlock.h"
  16
  17 /* Fixme: Use intrinsics to implement the spinlock on Power architecture */
  18
  19 #ifndef RTE_FORCE_INTRINSICS
  20
  21 static inline void
  22 rte_spinlock_lock(rte_spinlock_t *sl)
  23 {
  24         while (__sync_lock_test_and_set(&sl->locked, 1))
  25                 while (sl->locked)
  26                         rte_pause();
  27 }
  28
  29 static inline void
  30 rte_spinlock_unlock(rte_spinlock_t *sl)
  31 {
  32         __sync_lock_release(&sl->locked);
  33 }
  34
  35 static inline int
  36 rte_spinlock_trylock(rte_spinlock_t *sl)
  37 {
  38         return __sync_lock_test_and_set(&sl->locked, 1) == 0;
  39 }
  40
  41 #endif
  42
  43 static inline int rte_tm_supported(void)
  44 {
  45         return 0;
  46 }
  47
  48 static inline void
  49 rte_spinlock_lock_tm(rte_spinlock_t *sl)
  50 {
  51         rte_spinlock_lock(sl); /* fall-back */
  52 }
  53
  54 static inline int
  55 rte_spinlock_trylock_tm(rte_spinlock_t *sl)
  56 {
  57         return rte_spinlock_trylock(sl);
  58 }
  59
  60 static inline void
  61 rte_spinlock_unlock_tm(rte_spinlock_t *sl)
  62 {
  63         rte_spinlock_unlock(sl);
  64 }
  65
  66 static inline void
  67 rte_spinlock_recursive_lock_tm(rte_spinlock_recursive_t *slr)
  68 {
  69         rte_spinlock_recursive_lock(slr); /* fall-back */
  70 }
  71
  72 static inline void
  73 rte_spinlock_recursive_unlock_tm(rte_spinlock_recursive_t *slr)
  74 {
  75         rte_spinlock_recursive_unlock(slr);
  76 }
  77
  78 static inline int
  79 rte_spinlock_recursive_trylock_tm(rte_spinlock_recursive_t *slr)
  80 {
  81         return rte_spinlock_recursive_trylock(slr);
  82 }
  83
  84 #ifdef __cplusplus
  85 }
  86 #endif
  87
  88 #endif /* _RTE_SPINLOCK_PPC_64_H_ */