1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* atomic.h: These still suck, but the I-cache hit rate is higher. 3 * 4 * Copyright (C) 1996 David S. Miller (davem@davemloft.net) 5 * Copyright (C) 2000 Anton Blanchard (anton@linuxcare.com.au) 6 * Copyright (C) 2007 Kyle McMartin (kyle@parisc-linux.org) 7 * 8 * Additions by Keith M Wesolowski (wesolows@foobazco.org) based 9 * on asm-parisc/atomic.h Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>. 10 */ 11 12 #ifndef __ARCH_SPARC_ATOMIC__ 13 #define __ARCH_SPARC_ATOMIC__ 14 15 #include <linux/types.h> 16 17 #include <asm/cmpxchg.h> 18 #include <asm/barrier.h> 19 #include <asm-generic/atomic64.h> 20 21 int arch_atomic_add_return(int, atomic_t *); 22 #define arch_atomic_add_return arch_atomic_add_return 23 24 int arch_atomic_fetch_add(int, atomic_t *); 25 #define arch_atomic_fetch_add arch_atomic_fetch_add 26 27 int arch_atomic_fetch_and(int, atomic_t *); 28 #define arch_atomic_fetch_and arch_atomic_fetch_and 29 30 int arch_atomic_fetch_or(int, atomic_t *); 31 #define arch_atomic_fetch_or arch_atomic_fetch_or 32 33 int arch_atomic_fetch_xor(int, atomic_t *); 34 #define arch_atomic_fetch_xor arch_atomic_fetch_xor 35 36 int arch_atomic_cmpxchg(atomic_t *, int, int); 37 #define arch_atomic_cmpxchg arch_atomic_cmpxchg 38 39 int arch_atomic_xchg(atomic_t *, int); 40 #define arch_atomic_xchg arch_atomic_xchg 41 42 int arch_atomic_fetch_add_unless(atomic_t *, int, int); 43 #define arch_atomic_fetch_add_unless arch_atomic_fetch_add_unless 44 45 void arch_atomic_set(atomic_t *, int); 46 47 #define arch_atomic_set_release(v, i) arch_atomic_set((v), (i)) 48 49 #define arch_atomic_read(v) READ_ONCE((v)->counter) 50 51 #define arch_atomic_add(i, v) ((void)arch_atomic_add_return( (int)(i), (v))) 52 #define arch_atomic_sub(i, v) ((void)arch_atomic_add_return(-(int)(i), (v))) 53 54 #define arch_atomic_and(i, v) ((void)arch_atomic_fetch_and((i), (v))) 55 #define arch_atomic_or(i, v) ((void)arch_atomic_fetch_or((i), (v))) 56 #define arch_atomic_xor(i, v) ((void)arch_atomic_fetch_xor((i), (v))) 57 58 #define arch_atomic_sub_return(i, v) (arch_atomic_add_return(-(int)(i), (v))) 59 #define arch_atomic_fetch_sub(i, v) (arch_atomic_fetch_add (-(int)(i), (v))) 60 61 #endif /* !(__ARCH_SPARC_ATOMIC__) */ 62
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