avr32: remove support for AVR32 architecture

[sfrench/cifs-2.6.git] / arch / avr32 / include / asm / cmpxchg.h

diff --git a/arch/avr32/include/asm/cmpxchg.h b/arch/avr32/include/asm/cmpxchg.h
deleted file mode 100644 (file)
index 572739b..0000000
--- a/arch/avr32/include/asm/cmpxchg.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * Atomic operations that C can't guarantee us.  Useful for
- * resource counting etc.
- *
- * But use these as seldom as possible since they are slower than
- * regular operations.
- *
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#ifndef __ASM_AVR32_CMPXCHG_H
-#define __ASM_AVR32_CMPXCHG_H
-
-#define xchg(ptr,x) \
-       ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
-
-extern void __xchg_called_with_bad_pointer(void);
-
-static inline unsigned long xchg_u32(u32 val, volatile u32 *m)
-{
-       u32 ret;
-
-       asm volatile("xchg %[ret], %[m], %[val]"
-                       : [ret] "=&r"(ret), "=m"(*m)
-                       : "m"(*m), [m] "r"(m), [val] "r"(val)
-                       : "memory");
-       return ret;
-}
-
-static inline unsigned long __xchg(unsigned long x,
-                                      volatile void *ptr,
-                                      int size)
-{
-       switch(size) {
-       case 4:
-               return xchg_u32(x, ptr);
-       default:
-               __xchg_called_with_bad_pointer();
-               return x;
-       }
-}
-
-static inline unsigned long __cmpxchg_u32(volatile int *m, unsigned long old,
-                                         unsigned long new)
-{
-       __u32 ret;
-
-       asm volatile(
-               "1:     ssrf    5\n"
-               "       ld.w    %[ret], %[m]\n"
-               "       cp.w    %[ret], %[old]\n"
-               "       brne    2f\n"
-               "       stcond  %[m], %[new]\n"
-               "       brne    1b\n"
-               "2:\n"
-               : [ret] "=&r"(ret), [m] "=m"(*m)
-               : "m"(m), [old] "Ks21r"(old), [new] "r"(new)
-               : "memory", "cc");
-       return ret;
-}
-
-extern unsigned long __cmpxchg_u64_unsupported_on_32bit_kernels(
-        volatile int * m, unsigned long old, unsigned long new);
-#define __cmpxchg_u64 __cmpxchg_u64_unsupported_on_32bit_kernels
-
-/* 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);
-
-static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
-                                     unsigned long new, int size)
-{
-       switch (size) {
-       case 4:
-               return __cmpxchg_u32(ptr, old, new);
-       case 8:
-               return __cmpxchg_u64(ptr, old, new);
-       }
-
-       __cmpxchg_called_with_bad_pointer();
-       return old;
-}
-
-#define cmpxchg(ptr, old, new)                                 \
-       ((typeof(*(ptr)))__cmpxchg((ptr), (unsigned long)(old), \
-                                  (unsigned long)(new),        \
-                                  sizeof(*(ptr))))
-
-#include <asm-generic/cmpxchg-local.h>
-
-static inline unsigned long __cmpxchg_local(volatile void *ptr,
-                                     unsigned long old,
-                                     unsigned long new, int size)
-{
-       switch (size) {
-       case 4:
-               return __cmpxchg_u32(ptr, old, new);
-       default:
-               return __cmpxchg_local_generic(ptr, old, new, size);
-       }
-
-       return old;
-}
-
-#define cmpxchg_local(ptr, old, new)                                   \
-       ((typeof(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(old),   \
-                                  (unsigned long)(new),                \
-                                  sizeof(*(ptr))))
-
-#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
-
-#endif /* __ASM_AVR32_CMPXCHG_H */