| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 | #define ATOMIC_INIT(i) { (i) } |
| 22 | |
| 23 | int atomic_add_return(int, atomic_t *); |
| 24 | int atomic_fetch_add(int, atomic_t *); |
| 25 | int atomic_fetch_and(int, atomic_t *); |
| 26 | int atomic_fetch_or(int, atomic_t *); |
| 27 | int atomic_fetch_xor(int, atomic_t *); |
| 28 | int atomic_cmpxchg(atomic_t *, int, int); |
| 29 | int atomic_xchg(atomic_t *, int); |
| 30 | int atomic_fetch_add_unless(atomic_t *, int, int); |
| 31 | void atomic_set(atomic_t *, int); |
| 32 | |
| 33 | #define atomic_fetch_add_unless atomic_fetch_add_unless |
| 34 | |
| 35 | #define atomic_set_release(v, i) atomic_set((v), (i)) |
| 36 | |
| 37 | #define atomic_read(v) READ_ONCE((v)->counter) |
| 38 | |
| 39 | #define atomic_add(i, v) ((void)atomic_add_return( (int)(i), (v))) |
| 40 | #define atomic_sub(i, v) ((void)atomic_add_return(-(int)(i), (v))) |
| 41 | |
| 42 | #define atomic_and(i, v) ((void)atomic_fetch_and((i), (v))) |
| 43 | #define atomic_or(i, v) ((void)atomic_fetch_or((i), (v))) |
| 44 | #define atomic_xor(i, v) ((void)atomic_fetch_xor((i), (v))) |
| 45 | |
| 46 | #define atomic_sub_return(i, v) (atomic_add_return(-(int)(i), (v))) |
| 47 | #define atomic_fetch_sub(i, v) (atomic_fetch_add (-(int)(i), (v))) |
| 48 | |
| 49 | #endif /* !(__ARCH_SPARC_ATOMIC__) */ |