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Diffstat (limited to 'arch/csky/include/asm/atomic.h')
| -rw-r--r-- | arch/csky/include/asm/atomic.h | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/arch/csky/include/asm/atomic.h b/arch/csky/include/asm/atomic.h deleted file mode 100644 index e369d73b13e3..000000000000 --- a/arch/csky/include/asm/atomic.h +++ /dev/null @@ -1,212 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -#ifndef __ASM_CSKY_ATOMIC_H -#define __ASM_CSKY_ATOMIC_H - -#include <linux/version.h> -#include <asm/cmpxchg.h> -#include <asm/barrier.h> - -#ifdef CONFIG_CPU_HAS_LDSTEX - -#define __atomic_add_unless __atomic_add_unless -static inline int __atomic_add_unless(atomic_t *v, int a, int u) -{ - unsigned long tmp, ret; - - smp_mb(); - - asm volatile ( - "1: ldex.w %0, (%3) \n" - " mov %1, %0 \n" - " cmpne %0, %4 \n" - " bf 2f \n" - " add %0, %2 \n" - " stex.w %0, (%3) \n" - " bez %0, 1b \n" - "2: \n" - : "=&r" (tmp), "=&r" (ret) - : "r" (a), "r"(&v->counter), "r"(u) - : "memory"); - - if (ret != u) - smp_mb(); - - return ret; -} - -#define ATOMIC_OP(op, c_op) \ -static inline void atomic_##op(int i, atomic_t *v) \ -{ \ - unsigned long tmp; \ - \ - asm volatile ( \ - "1: ldex.w %0, (%2) \n" \ - " " #op " %0, %1 \n" \ - " stex.w %0, (%2) \n" \ - " bez %0, 1b \n" \ - : "=&r" (tmp) \ - : "r" (i), "r"(&v->counter) \ - : "memory"); \ -} - -#define ATOMIC_OP_RETURN(op, c_op) \ -static inline int atomic_##op##_return(int i, atomic_t *v) \ -{ \ - unsigned long tmp, ret; \ - \ - smp_mb(); \ - asm volatile ( \ - "1: ldex.w %0, (%3) \n" \ - " " #op " %0, %2 \n" \ - " mov %1, %0 \n" \ - " stex.w %0, (%3) \n" \ - " bez %0, 1b \n" \ - : "=&r" (tmp), "=&r" (ret) \ - : "r" (i), "r"(&v->counter) \ - : "memory"); \ - smp_mb(); \ - \ - return ret; \ -} - -#define ATOMIC_FETCH_OP(op, c_op) \ -static inline int atomic_fetch_##op(int i, atomic_t *v) \ -{ \ - unsigned long tmp, ret; \ - \ - smp_mb(); \ - asm volatile ( \ - "1: ldex.w %0, (%3) \n" \ - " mov %1, %0 \n" \ - " " #op " %0, %2 \n" \ - " stex.w %0, (%3) \n" \ - " bez %0, 1b \n" \ - : "=&r" (tmp), "=&r" (ret) \ - : "r" (i), "r"(&v->counter) \ - : "memory"); \ - smp_mb(); \ - \ - return ret; \ -} - -#else /* CONFIG_CPU_HAS_LDSTEX */ - -#include <linux/irqflags.h> - -#define __atomic_add_unless __atomic_add_unless -static inline int __atomic_add_unless(atomic_t *v, int a, int u) -{ - unsigned long tmp, ret, flags; - - raw_local_irq_save(flags); - - asm volatile ( - " ldw %0, (%3) \n" - " mov %1, %0 \n" - " cmpne %0, %4 \n" - " bf 2f \n" - " add %0, %2 \n" - " stw %0, (%3) \n" - "2: \n" - : "=&r" (tmp), "=&r" (ret) - : "r" (a), "r"(&v->counter), "r"(u) - : "memory"); - - raw_local_irq_restore(flags); - - return ret; -} - -#define ATOMIC_OP(op, c_op) \ -static inline void atomic_##op(int i, atomic_t *v) \ -{ \ - unsigned long tmp, flags; \ - \ - raw_local_irq_save(flags); \ - \ - asm volatile ( \ - " ldw %0, (%2) \n" \ - " " #op " %0, %1 \n" \ - " stw %0, (%2) \n" \ - : "=&r" (tmp) \ - : "r" (i), "r"(&v->counter) \ - : "memory"); \ - \ - raw_local_irq_restore(flags); \ -} - -#define ATOMIC_OP_RETURN(op, c_op) \ -static inline int atomic_##op##_return(int i, atomic_t *v) \ -{ \ - unsigned long tmp, ret, flags; \ - \ - raw_local_irq_save(flags); \ - \ - asm volatile ( \ - " ldw %0, (%3) \n" \ - " " #op " %0, %2 \n" \ - " stw %0, (%3) \n" \ - " mov %1, %0 \n" \ - : "=&r" (tmp), "=&r" (ret) \ - : "r" (i), "r"(&v->counter) \ - : "memory"); \ - \ - raw_local_irq_restore(flags); \ - \ - return ret; \ -} - -#define ATOMIC_FETCH_OP(op, c_op) \ -static inline int atomic_fetch_##op(int i, atomic_t *v) \ -{ \ - unsigned long tmp, ret, flags; \ - \ - raw_local_irq_save(flags); \ - \ - asm volatile ( \ - " ldw %0, (%3) \n" \ - " mov %1, %0 \n" \ - " " #op " %0, %2 \n" \ - " stw %0, (%3) \n" \ - : "=&r" (tmp), "=&r" (ret) \ - : "r" (i), "r"(&v->counter) \ - : "memory"); \ - \ - raw_local_irq_restore(flags); \ - \ - return ret; \ -} - -#endif /* CONFIG_CPU_HAS_LDSTEX */ - -#define atomic_add_return atomic_add_return -ATOMIC_OP_RETURN(add, +) -#define atomic_sub_return atomic_sub_return -ATOMIC_OP_RETURN(sub, -) - -#define atomic_fetch_add atomic_fetch_add -ATOMIC_FETCH_OP(add, +) -#define atomic_fetch_sub atomic_fetch_sub -ATOMIC_FETCH_OP(sub, -) -#define atomic_fetch_and atomic_fetch_and -ATOMIC_FETCH_OP(and, &) -#define atomic_fetch_or atomic_fetch_or -ATOMIC_FETCH_OP(or, |) -#define atomic_fetch_xor atomic_fetch_xor -ATOMIC_FETCH_OP(xor, ^) - -#define atomic_and atomic_and -ATOMIC_OP(and, &) -#define atomic_or atomic_or -ATOMIC_OP(or, |) -#define atomic_xor atomic_xor -ATOMIC_OP(xor, ^) - -#undef ATOMIC_FETCH_OP -#undef ATOMIC_OP_RETURN -#undef ATOMIC_OP - -#include <asm-generic/atomic.h> - -#endif /* __ASM_CSKY_ATOMIC_H */ |