svn commit: r353131 - head/sys/riscv/include

[Kyle Evans]

Author: kevans
Date: Sun Oct  6 01:35:31 2019
New Revision: 353131
URL: https://svnweb.freebsd.org/changeset/base/353131

Log:
  riscv: use the common sub-word {,f}cmpset implementation
  
  Reviewed by:	mhorne
  Differential Revision:	https://reviews.freebsd.org/D21888

Modified:
  head/sys/riscv/include/atomic.h

Modified: head/sys/riscv/include/atomic.h
==============================================================================
--- head/sys/riscv/include/atomic.h	Sat Oct  5 22:17:54 2019	(r353130)
+++ head/sys/riscv/include/atomic.h	Sun Oct  6 01:35:31 2019	(r353131)
@@ -44,6 +44,12 @@
 #define	rmb()	fence()
 #define	wmb()	fence()
 
+static __inline int atomic_cmpset_8(__volatile uint8_t *, uint8_t, uint8_t);
+static __inline int atomic_fcmpset_8(__volatile uint8_t *, uint8_t *, uint8_t);
+static __inline int atomic_cmpset_16(__volatile uint16_t *, uint16_t, uint16_t);
+static __inline int atomic_fcmpset_16(__volatile uint16_t *, uint16_t *,
+    uint16_t);
+
 #define	ATOMIC_ACQ_REL(NAME, WIDTH)					\
 static __inline  void							\
 atomic_##NAME##_acq_##WIDTH(__volatile uint##WIDTH##_t *p, uint##WIDTH##_t v)\
@@ -59,6 +65,66 @@ atomic_##NAME##_rel_##WIDTH(__volatile uint##WIDTH##_t
 	atomic_##NAME##_##WIDTH(p, v);					\
 }
 
+#define	ATOMIC_CMPSET_ACQ_REL(WIDTH)					\
+static __inline  int							\
+atomic_cmpset_acq_##WIDTH(__volatile uint##WIDTH##_t *p,		\
+    uint##WIDTH##_t cmpval, uint##WIDTH##_t newval)			\
+{									\
+	int retval;							\
+									\
+	retval = atomic_cmpset_##WIDTH(p, cmpval, newval);		\
+	fence();							\
+	return (retval);						\
+}									\
+									\
+static __inline  int							\
+atomic_cmpset_rel_##WIDTH(__volatile uint##WIDTH##_t *p,		\
+    uint##WIDTH##_t cmpval, uint##WIDTH##_t newval)			\
+{									\
+	fence();							\
+	return (atomic_cmpset_##WIDTH(p, cmpval, newval));		\
+}
+
+#define	ATOMIC_FCMPSET_ACQ_REL(WIDTH)					\
+static __inline  int							\
+atomic_fcmpset_acq_##WIDTH(__volatile uint##WIDTH##_t *p,		\
+    uint##WIDTH##_t *cmpval, uint##WIDTH##_t newval)			\
+{									\
+	int retval;							\
+									\
+	retval = atomic_fcmpset_##WIDTH(p, cmpval, newval);		\
+	fence();							\
+	return (retval);						\
+}									\
+									\
+static __inline  int							\
+atomic_fcmpset_rel_##WIDTH(__volatile uint##WIDTH##_t *p,		\
+    uint##WIDTH##_t *cmpval, uint##WIDTH##_t newval)			\
+{									\
+	fence();							\
+	return (atomic_fcmpset_##WIDTH(p, cmpval, newval));		\
+}
+
+ATOMIC_CMPSET_ACQ_REL(8);
+ATOMIC_FCMPSET_ACQ_REL(8);
+ATOMIC_CMPSET_ACQ_REL(16);
+ATOMIC_FCMPSET_ACQ_REL(16);
+
+#define	atomic_cmpset_char		atomic_cmpset_8
+#define	atomic_cmpset_acq_char		atomic_cmpset_acq_8
+#define	atomic_cmpset_rel_char		atomic_cmpset_rel_8
+#define	atomic_fcmpset_char		atomic_fcmpset_8
+#define	atomic_fcmpset_acq_char		atomic_fcmpset_acq_8
+#define	atomic_fcmpset_rel_char		atomic_fcmpset_rel_8
+
+
+#define	atomic_cmpset_short		atomic_cmpset_16
+#define	atomic_cmpset_acq_short		atomic_cmpset_acq_16
+#define	atomic_cmpset_rel_short		atomic_cmpset_rel_16
+#define	atomic_fcmpset_short		atomic_fcmpset_16
+#define	atomic_fcmpset_acq_short	atomic_fcmpset_acq_16
+#define	atomic_fcmpset_rel_short	atomic_fcmpset_rel_16
+
 static __inline void
 atomic_add_32(volatile uint32_t *p, uint32_t val)
 {
@@ -190,48 +256,9 @@ ATOMIC_ACQ_REL(clear, 32)
 ATOMIC_ACQ_REL(add, 32)
 ATOMIC_ACQ_REL(subtract, 32)
 
-static __inline int
-atomic_cmpset_acq_32(volatile uint32_t *p, uint32_t cmpval, uint32_t newval)
-{
-	int res;
+ATOMIC_CMPSET_ACQ_REL(32);
+ATOMIC_FCMPSET_ACQ_REL(32);
 
-	res = atomic_cmpset_32(p, cmpval, newval);
-
-	fence();
-
-	return (res);
-}
-
-static __inline int
-atomic_cmpset_rel_32(volatile uint32_t *p, uint32_t cmpval, uint32_t newval)
-{
-
-	fence();
-
-	return (atomic_cmpset_32(p, cmpval, newval));
-}
-
-static __inline int
-atomic_fcmpset_acq_32(volatile uint32_t *p, uint32_t *cmpval, uint32_t newval)
-{
-	int res;
-
-	res = atomic_fcmpset_32(p, cmpval, newval);
-
-	fence();
-
-	return (res);
-}
-
-static __inline int
-atomic_fcmpset_rel_32(volatile uint32_t *p, uint32_t *cmpval, uint32_t newval)
-{
-
-	fence();
-
-	return (atomic_fcmpset_32(p, cmpval, newval));
-}
-
 static __inline uint32_t
 atomic_load_acq_32(volatile uint32_t *p)
 {
@@ -439,48 +466,9 @@ ATOMIC_ACQ_REL(clear, 64)
 ATOMIC_ACQ_REL(add, 64)
 ATOMIC_ACQ_REL(subtract, 64)
 
-static __inline int
-atomic_cmpset_acq_64(volatile uint64_t *p, uint64_t cmpval, uint64_t newval)
-{
-	int res;
+ATOMIC_CMPSET_ACQ_REL(64);
+ATOMIC_FCMPSET_ACQ_REL(64);
 
-	res = atomic_cmpset_64(p, cmpval, newval);
-
-	fence();
-
-	return (res);
-}
-
-static __inline int
-atomic_cmpset_rel_64(volatile uint64_t *p, uint64_t cmpval, uint64_t newval)
-{
-
-	fence();
-
-	return (atomic_cmpset_64(p, cmpval, newval));
-}
-
-static __inline int
-atomic_fcmpset_acq_64(volatile uint64_t *p, uint64_t *cmpval, uint64_t newval)
-{
-	int res;
-
-	res = atomic_fcmpset_64(p, cmpval, newval);
-
-	fence();
-
-	return (res);
-}
-
-static __inline int
-atomic_fcmpset_rel_64(volatile uint64_t *p, uint64_t *cmpval, uint64_t newval)
-{
-
-	fence();
-
-	return (atomic_fcmpset_64(p, cmpval, newval));
-}
-
 static __inline uint64_t
 atomic_load_acq_64(volatile uint64_t *p)
 {
@@ -566,5 +554,7 @@ atomic_thread_fence_seq_cst(void)
 #define	atomic_set_rel_ptr		atomic_set_rel_64
 #define	atomic_subtract_rel_ptr		atomic_subtract_rel_64
 #define	atomic_store_rel_ptr		atomic_store_rel_64
+
+#include <sys/_atomic_subword.h>
 
 #endif /* _MACHINE_ATOMIC_H_ */