Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef _ALPHA_CMPXCHG_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _ALPHA_CMPXCHG_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Atomic exchange routines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #define ____xchg(type, args...)		__xchg ## type ## _local(args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define ____cmpxchg(type, args...)	__cmpxchg ## type ## _local(args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <asm/xchg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define xchg_local(ptr, x)						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) ({									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	__typeof__(*(ptr)) _x_ = (x);					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	(__typeof__(*(ptr))) __xchg_local((ptr), (unsigned long)_x_,	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 				       sizeof(*(ptr)));			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define cmpxchg_local(ptr, o, n)					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) ({									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	__typeof__(*(ptr)) _o_ = (o);					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	__typeof__(*(ptr)) _n_ = (n);					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	(__typeof__(*(ptr))) __cmpxchg_local((ptr), (unsigned long)_o_,	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 					  (unsigned long)_n_,		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 					  sizeof(*(ptr)));		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define cmpxchg64_local(ptr, o, n)					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) ({									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	BUILD_BUG_ON(sizeof(*(ptr)) != 8);				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	cmpxchg_local((ptr), (o), (n));					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #undef ____xchg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #undef ____cmpxchg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define ____xchg(type, args...)		__xchg ##type(args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define ____cmpxchg(type, args...)	__cmpxchg ##type(args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <asm/xchg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)  * The leading and the trailing memory barriers guarantee that these
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)  * operations are fully ordered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define xchg(ptr, x)							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) ({									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	__typeof__(*(ptr)) __ret;					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	__typeof__(*(ptr)) _x_ = (x);					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	smp_mb();							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	__ret = (__typeof__(*(ptr)))					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		__xchg((ptr), (unsigned long)_x_, sizeof(*(ptr)));	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	smp_mb();							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	__ret;								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define cmpxchg(ptr, o, n)						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) ({									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	__typeof__(*(ptr)) __ret;					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	__typeof__(*(ptr)) _o_ = (o);					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	__typeof__(*(ptr)) _n_ = (n);					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	smp_mb();							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	__ret = (__typeof__(*(ptr))) __cmpxchg((ptr),			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		(unsigned long)_o_, (unsigned long)_n_, sizeof(*(ptr)));\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	smp_mb();							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	__ret;								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define cmpxchg64(ptr, o, n)						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) ({									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	BUILD_BUG_ON(sizeof(*(ptr)) != 8);				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	cmpxchg((ptr), (o), (n));					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #undef ____cmpxchg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #endif /* _ALPHA_CMPXCHG_H */