diff options
Diffstat (limited to 'arch/metag/include/asm/atomic_lnkget.h')
| -rw-r--r-- | arch/metag/include/asm/atomic_lnkget.h | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/arch/metag/include/asm/atomic_lnkget.h b/arch/metag/include/asm/atomic_lnkget.h deleted file mode 100644 index 17e8c61..0000000 --- a/arch/metag/include/asm/atomic_lnkget.h +++ /dev/null @@ -1,204 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef __ASM_METAG_ATOMIC_LNKGET_H -#define __ASM_METAG_ATOMIC_LNKGET_H - -#define ATOMIC_INIT(i) { (i) } - -#define atomic_set(v, i) WRITE_ONCE((v)->counter, (i)) - -#include <linux/compiler.h> - -#include <asm/barrier.h> - -/* - * None of these asm statements clobber memory as LNKSET writes around - * the cache so the memory it modifies cannot safely be read by any means - * other than these accessors. - */ - -static inline int atomic_read(const atomic_t *v) -{ - int temp; - - asm volatile ( - "LNKGETD %0, [%1]\n" - : "=da" (temp) - : "da" (&v->counter)); - - return temp; -} - -#define ATOMIC_OP(op) \ -static inline void atomic_##op(int i, atomic_t *v) \ -{ \ - int temp; \ - \ - asm volatile ( \ - "1: LNKGETD %0, [%1]\n" \ - " " #op " %0, %0, %2\n" \ - " LNKSETD [%1], %0\n" \ - " DEFR %0, TXSTAT\n" \ - " ANDT %0, %0, #HI(0x3f000000)\n" \ - " CMPT %0, #HI(0x02000000)\n" \ - " BNZ 1b\n" \ - : "=&d" (temp) \ - : "da" (&v->counter), "bd" (i) \ - : "cc"); \ -} \ - -#define ATOMIC_OP_RETURN(op) \ -static inline int atomic_##op##_return(int i, atomic_t *v) \ -{ \ - int result, temp; \ - \ - smp_mb(); \ - \ - asm volatile ( \ - "1: LNKGETD %1, [%2]\n" \ - " " #op " %1, %1, %3\n" \ - " LNKSETD [%2], %1\n" \ - " DEFR %0, TXSTAT\n" \ - " ANDT %0, %0, #HI(0x3f000000)\n" \ - " CMPT %0, #HI(0x02000000)\n" \ - " BNZ 1b\n" \ - : "=&d" (temp), "=&da" (result) \ - : "da" (&v->counter), "br" (i) \ - : "cc"); \ - \ - smp_mb(); \ - \ - return result; \ -} - -#define ATOMIC_FETCH_OP(op) \ -static inline int atomic_fetch_##op(int i, atomic_t *v) \ -{ \ - int result, temp; \ - \ - smp_mb(); \ - \ - asm volatile ( \ - "1: LNKGETD %1, [%2]\n" \ - " " #op " %0, %1, %3\n" \ - " LNKSETD [%2], %0\n" \ - " DEFR %0, TXSTAT\n" \ - " ANDT %0, %0, #HI(0x3f000000)\n" \ - " CMPT %0, #HI(0x02000000)\n" \ - " BNZ 1b\n" \ - : "=&d" (temp), "=&d" (result) \ - : "da" (&v->counter), "bd" (i) \ - : "cc"); \ - \ - smp_mb(); \ - \ - return result; \ -} - -#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) ATOMIC_FETCH_OP(op) - -ATOMIC_OPS(add) -ATOMIC_OPS(sub) - -#undef ATOMIC_OPS -#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op) - -ATOMIC_OPS(and) -ATOMIC_OPS(or) -ATOMIC_OPS(xor) - -#undef ATOMIC_OPS -#undef ATOMIC_FETCH_OP -#undef ATOMIC_OP_RETURN -#undef ATOMIC_OP - -static inline int atomic_cmpxchg(atomic_t *v, int old, int new) -{ - int result, temp; - - smp_mb(); - - asm volatile ( - "1: LNKGETD %1, [%2]\n" - " CMP %1, %3\n" - " LNKSETDEQ [%2], %4\n" - " BNE 2f\n" - " DEFR %0, TXSTAT\n" - " ANDT %0, %0, #HI(0x3f000000)\n" - " CMPT %0, #HI(0x02000000)\n" - " BNZ 1b\n" - "2:\n" - : "=&d" (temp), "=&d" (result) - : "da" (&v->counter), "bd" (old), "da" (new) - : "cc"); - - smp_mb(); - - return result; -} - -static inline int atomic_xchg(atomic_t *v, int new) -{ - int temp, old; - - asm volatile ( - "1: LNKGETD %1, [%2]\n" - " LNKSETD [%2], %3\n" - " DEFR %0, TXSTAT\n" - " ANDT %0, %0, #HI(0x3f000000)\n" - " CMPT %0, #HI(0x02000000)\n" - " BNZ 1b\n" - : "=&d" (temp), "=&d" (old) - : "da" (&v->counter), "da" (new) - : "cc"); - - return old; -} - -static inline int __atomic_add_unless(atomic_t *v, int a, int u) -{ - int result, temp; - - smp_mb(); - - asm volatile ( - "1: LNKGETD %1, [%2]\n" - " CMP %1, %3\n" - " ADD %0, %1, %4\n" - " LNKSETDNE [%2], %0\n" - " BEQ 2f\n" - " DEFR %0, TXSTAT\n" - " ANDT %0, %0, #HI(0x3f000000)\n" - " CMPT %0, #HI(0x02000000)\n" - " BNZ 1b\n" - "2:\n" - : "=&d" (temp), "=&d" (result) - : "da" (&v->counter), "bd" (u), "bd" (a) - : "cc"); - - smp_mb(); - - return result; -} - -static inline int atomic_sub_if_positive(int i, atomic_t *v) -{ - int result, temp; - - asm volatile ( - "1: LNKGETD %1, [%2]\n" - " SUBS %1, %1, %3\n" - " LNKSETDGE [%2], %1\n" - " BLT 2f\n" - " DEFR %0, TXSTAT\n" - " ANDT %0, %0, #HI(0x3f000000)\n" - " CMPT %0, #HI(0x02000000)\n" - " BNZ 1b\n" - "2:\n" - : "=&d" (temp), "=&da" (result) - : "da" (&v->counter), "bd" (i) - : "cc"); - - return result; -} - -#endif /* __ASM_METAG_ATOMIC_LNKGET_H */ |
