MIPS: Move headfiles to new location below arch/mips/include

[karo-tx-linux.git] / include / asm-mips / cmpxchg.h

diff --git a/include/asm-mips/cmpxchg.h b/include/asm-mips/cmpxchg.h
deleted file mode 100644 (file)
index 4a812c3..0000000
--- a/include/asm-mips/cmpxchg.h
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2003, 06, 07 by Ralf Baechle (ralf@linux-mips.org)
- */
-#ifndef __ASM_CMPXCHG_H
-#define __ASM_CMPXCHG_H
-
-#include <linux/irqflags.h>
-
-#define __HAVE_ARCH_CMPXCHG 1
-
-#define __cmpxchg_asm(ld, st, m, old, new)                             \
-({                                                                     \
-       __typeof(*(m)) __ret;                                           \
-                                                                       \
-       if (cpu_has_llsc && R10000_LLSC_WAR) {                          \
-               __asm__ __volatile__(                                   \
-               "       .set    push                            \n"     \
-               "       .set    noat                            \n"     \
-               "       .set    mips3                           \n"     \
-               "1:     " ld "  %0, %2          # __cmpxchg_asm \n"     \
-               "       bne     %0, %z3, 2f                     \n"     \
-               "       .set    mips0                           \n"     \
-               "       move    $1, %z4                         \n"     \
-               "       .set    mips3                           \n"     \
-               "       " st "  $1, %1                          \n"     \
-               "       beqzl   $1, 1b                          \n"     \
-               "2:                                             \n"     \
-               "       .set    pop                             \n"     \
-               : "=&r" (__ret), "=R" (*m)                              \
-               : "R" (*m), "Jr" (old), "Jr" (new)                      \
-               : "memory");                                            \
-       } else if (cpu_has_llsc) {                                      \
-               __asm__ __volatile__(                                   \
-               "       .set    push                            \n"     \
-               "       .set    noat                            \n"     \
-               "       .set    mips3                           \n"     \
-               "1:     " ld "  %0, %2          # __cmpxchg_asm \n"     \
-               "       bne     %0, %z3, 2f                     \n"     \
-               "       .set    mips0                           \n"     \
-               "       move    $1, %z4                         \n"     \
-               "       .set    mips3                           \n"     \
-               "       " st "  $1, %1                          \n"     \
-               "       beqz    $1, 3f                          \n"     \
-               "2:                                             \n"     \
-               "       .subsection 2                           \n"     \
-               "3:     b       1b                              \n"     \
-               "       .previous                               \n"     \
-               "       .set    pop                             \n"     \
-               : "=&r" (__ret), "=R" (*m)                              \
-               : "R" (*m), "Jr" (old), "Jr" (new)                      \
-               : "memory");                                            \
-       } else {                                                        \
-               unsigned long __flags;                                  \
-                                                                       \
-               raw_local_irq_save(__flags);                            \
-               __ret = *m;                                             \
-               if (__ret == old)                                       \
-                       *m = new;                                       \
-               raw_local_irq_restore(__flags);                         \
-       }                                                               \
-                                                                       \
-       __ret;                                                          \
-})
-
-/*
- * This function doesn't exist, so you'll get a linker error
- * if something tries to do an invalid cmpxchg().
- */
-extern void __cmpxchg_called_with_bad_pointer(void);
-
-#define __cmpxchg(ptr, old, new, barrier)                              \
-({                                                                     \
-       __typeof__(ptr) __ptr = (ptr);                                  \
-       __typeof__(*(ptr)) __old = (old);                               \
-       __typeof__(*(ptr)) __new = (new);                               \
-       __typeof__(*(ptr)) __res = 0;                                   \
-                                                                       \
-       barrier;                                                        \
-                                                                       \
-       switch (sizeof(*(__ptr))) {                                     \
-       case 4:                                                         \
-               __res = __cmpxchg_asm("ll", "sc", __ptr, __old, __new); \
-               break;                                                  \
-       case 8:                                                         \
-               if (sizeof(long) == 8) {                                \
-                       __res = __cmpxchg_asm("lld", "scd", __ptr,      \
-                                          __old, __new);               \
-                       break;                                          \
-               }                                                       \
-       default:                                                        \
-               __cmpxchg_called_with_bad_pointer();                    \
-               break;                                                  \
-       }                                                               \
-                                                                       \
-       barrier;                                                        \
-                                                                       \
-       __res;                                                          \
-})
-
-#define cmpxchg(ptr, old, new)         __cmpxchg(ptr, old, new, smp_llsc_mb())
-#define cmpxchg_local(ptr, old, new)   __cmpxchg(ptr, old, new, )
-
-#define cmpxchg64(ptr, o, n)                                           \
-  ({                                                                   \
-       BUILD_BUG_ON(sizeof(*(ptr)) != 8);                              \
-       cmpxchg((ptr), (o), (n));                                       \
-  })
-
-#ifdef CONFIG_64BIT
-#define cmpxchg64_local(ptr, o, n)                                     \
-  ({                                                                   \
-       BUILD_BUG_ON(sizeof(*(ptr)) != 8);                              \
-       cmpxchg_local((ptr), (o), (n));                                 \
-  })
-#else
-#include <asm-generic/cmpxchg-local.h>
-#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
-#endif
-
-#endif /* __ASM_CMPXCHG_H */