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Diffstat (limited to 'include/asm-avr32/system.h')
| -rw-r--r-- | include/asm-avr32/system.h | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/include/asm-avr32/system.h b/include/asm-avr32/system.h deleted file mode 100644 index ac596058697..00000000000 --- a/include/asm-avr32/system.h +++ /dev/null @@ -1,155 +0,0 @@ -/* - * 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_SYSTEM_H -#define __ASM_AVR32_SYSTEM_H - -#include <linux/compiler.h> -#include <linux/types.h> - -#include <asm/ptrace.h> -#include <asm/sysreg.h> - -#define xchg(ptr,x) \ - ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) - -#define nop() asm volatile("nop") - -#define mb() asm volatile("" : : : "memory") -#define rmb() mb() -#define wmb() asm volatile("sync 0" : : : "memory") -#define read_barrier_depends() do { } while(0) -#define set_mb(var, value) do { var = value; mb(); } while(0) - -/* - * Help PathFinder and other Nexus-compliant debuggers keep track of - * the current PID by emitting an Ownership Trace Message each time we - * switch task. - */ -#ifdef CONFIG_OWNERSHIP_TRACE -#include <asm/ocd.h> -#define finish_arch_switch(prev) \ - do { \ - __mtdr(DBGREG_PID, prev->pid); \ - __mtdr(DBGREG_PID, current->pid); \ - } while(0) -#endif - -/* - * switch_to(prev, next, last) should switch from task `prev' to task - * `next'. `prev' will never be the same as `next'. - * - * We just delegate everything to the __switch_to assembly function, - * which is implemented in arch/avr32/kernel/switch_to.S - * - * mb() tells GCC not to cache `current' across this call. - */ -struct cpu_context; -struct task_struct; -extern struct task_struct *__switch_to(struct task_struct *, - struct cpu_context *, - struct cpu_context *); -#define switch_to(prev, next, last) \ - do { \ - last = __switch_to(prev, &prev->thread.cpu_context + 1, \ - &next->thread.cpu_context); \ - } while (0) - -#ifdef CONFIG_SMP -# error "The AVR32 port does not support SMP" -#else -# define smp_mb() barrier() -# define smp_rmb() barrier() -# define smp_wmb() barrier() -# define smp_read_barrier_depends() do { } while(0) -#endif - -#include <linux/irqflags.h> - -extern void __xchg_called_with_bad_pointer(void); - -#ifdef __CHECKER__ -extern unsigned long __builtin_xchg(void *ptr, unsigned long x); -#endif - -#define xchg_u32(val, m) __builtin_xchg((void *)m, val) - -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] "ir"(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); - -#define __HAVE_ARCH_CMPXCHG 1 - -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)))) - -struct pt_regs; -extern void __die(const char *, struct pt_regs *, unsigned long, - const char *, const char *, unsigned long); -extern void __die_if_kernel(const char *, struct pt_regs *, unsigned long, - const char *, const char *, unsigned long); - -#define die(msg, regs, err) \ - __die(msg, regs, err, __FILE__ ":", __FUNCTION__, __LINE__) -#define die_if_kernel(msg, regs, err) \ - __die_if_kernel(msg, regs, err, __FILE__ ":", __FUNCTION__, __LINE__) - -#define arch_align_stack(x) (x) - -#endif /* __ASM_AVR32_SYSTEM_H */ |