Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Generic implementation of 64-bit atomics using spinlocks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * useful on processors that don't have 64-bit atomic instructions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Copyright © 2009 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #ifndef _ASM_GENERIC_ATOMIC64_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #define _ASM_GENERIC_ATOMIC64_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	s64 counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) } atomic64_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define ATOMIC64_INIT(i)	{ (i) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) extern s64 atomic64_read(const atomic64_t *v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) extern void atomic64_set(atomic64_t *v, s64 i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define atomic64_set_release(v, i)	atomic64_set((v), (i))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define ATOMIC64_OP(op)							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) extern void	 atomic64_##op(s64 a, atomic64_t *v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define ATOMIC64_OP_RETURN(op)						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) extern s64 atomic64_##op##_return(s64 a, atomic64_t *v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define ATOMIC64_FETCH_OP(op)						\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) extern s64 atomic64_fetch_##op(s64 a, atomic64_t *v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define ATOMIC64_OPS(op)	ATOMIC64_OP(op) ATOMIC64_OP_RETURN(op) ATOMIC64_FETCH_OP(op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) ATOMIC64_OPS(add)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) ATOMIC64_OPS(sub)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #undef ATOMIC64_OPS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define ATOMIC64_OPS(op)	ATOMIC64_OP(op) ATOMIC64_FETCH_OP(op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) ATOMIC64_OPS(and)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) ATOMIC64_OPS(or)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) ATOMIC64_OPS(xor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #undef ATOMIC64_OPS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #undef ATOMIC64_FETCH_OP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #undef ATOMIC64_OP_RETURN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #undef ATOMIC64_OP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) extern s64 atomic64_dec_if_positive(atomic64_t *v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define atomic64_dec_if_positive atomic64_dec_if_positive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) extern s64 atomic64_cmpxchg(atomic64_t *v, s64 o, s64 n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) extern s64 atomic64_xchg(atomic64_t *v, s64 new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) extern s64 atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define atomic64_fetch_add_unless atomic64_fetch_add_unless
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #endif  /*  _ASM_GENERIC_ATOMIC64_H  */