Disintegrate asm/system.h for Blackfin [ver #2]

Disintegrate asm/system.h for Blackfin.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: uclinux-dist-devel@blackfin.uclinux.org
Signed-off-by: Bob Liu <lliubbo@gmail.com>

1 files changed, 5 insertions, 192 deletions

diff --git a/arch/blackfin/include/asm/system.h b/arch/blackfin/include/asm/system.h
index 44bd0cced72..a7f40578587 100644
--- a/arch/blackfin/include/asm/system.h
+++ b/arch/blackfin/include/asm/system.h
@@ -1,192 +1,5 @@
-/*
- * Copyright 2004-2009 Analog Devices Inc.
- *               Tony Kou (tonyko@lineo.ca)
- *
- * Licensed under the GPL-2 or later
- */
-
-#ifndef _BLACKFIN_SYSTEM_H
-#define _BLACKFIN_SYSTEM_H
-
-#include <linux/linkage.h>
-#include <linux/irqflags.h>
-#include <mach/anomaly.h>
-#include <asm/cache.h>
-#include <asm/pda.h>
-#include <asm/irq.h>
-
-/*
- * Force strict CPU ordering.
- */
-#define nop()  __asm__ __volatile__ ("nop;\n\t" : : )
-#define smp_mb()  mb()
-#define smp_rmb() rmb()
-#define smp_wmb() wmb()
-#define set_mb(var, value) do { var = value; mb(); } while (0)
-#define smp_read_barrier_depends()	read_barrier_depends()
-
-#ifdef CONFIG_SMP
-asmlinkage unsigned long __raw_xchg_1_asm(volatile void *ptr, unsigned long value);
-asmlinkage unsigned long __raw_xchg_2_asm(volatile void *ptr, unsigned long value);
-asmlinkage unsigned long __raw_xchg_4_asm(volatile void *ptr, unsigned long value);
-asmlinkage unsigned long __raw_cmpxchg_1_asm(volatile void *ptr,
-					unsigned long new, unsigned long old);
-asmlinkage unsigned long __raw_cmpxchg_2_asm(volatile void *ptr,
-					unsigned long new, unsigned long old);
-asmlinkage unsigned long __raw_cmpxchg_4_asm(volatile void *ptr,
-					unsigned long new, unsigned long old);
-
-#ifdef __ARCH_SYNC_CORE_DCACHE
-/* Force Core data cache coherence */
-# define mb()	do { barrier(); smp_check_barrier(); smp_mark_barrier(); } while (0)
-# define rmb()	do { barrier(); smp_check_barrier(); } while (0)
-# define wmb()	do { barrier(); smp_mark_barrier(); } while (0)
-# define read_barrier_depends()	do { barrier(); smp_check_barrier(); } while (0)
-#else
-# define mb()	barrier()
-# define rmb()	barrier()
-# define wmb()	barrier()
-# define read_barrier_depends()	do { } while (0)
-#endif
-
-static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
-				   int size)
-{
-	unsigned long tmp;
-
-	switch (size) {
-	case 1:
-		tmp = __raw_xchg_1_asm(ptr, x);
-		break;
-	case 2:
-		tmp = __raw_xchg_2_asm(ptr, x);
-		break;
-	case 4:
-		tmp = __raw_xchg_4_asm(ptr, x);
-		break;
-	}
-
-	return tmp;
-}
-
-/*
- * Atomic compare and exchange.  Compare OLD with MEM, if identical,
- * store NEW in MEM.  Return the initial value in MEM.  Success is
- * indicated by comparing RETURN with OLD.
- */
-static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
-				      unsigned long new, int size)
-{
-	unsigned long tmp;
-
-	switch (size) {
-	case 1:
-		tmp = __raw_cmpxchg_1_asm(ptr, new, old);
-		break;
-	case 2:
-		tmp = __raw_cmpxchg_2_asm(ptr, new, old);
-		break;
-	case 4:
-		tmp = __raw_cmpxchg_4_asm(ptr, new, old);
-		break;
-	}
-
-	return tmp;
-}
-#define cmpxchg(ptr, o, n) \
-	((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o), \
-		(unsigned long)(n), sizeof(*(ptr))))
-
-#else /* !CONFIG_SMP */
-
-#define mb()	barrier()
-#define rmb()	barrier()
-#define wmb()	barrier()
-#define read_barrier_depends()	do { } while (0)
-
-struct __xchg_dummy {
-	unsigned long a[100];
-};
-#define __xg(x) ((volatile struct __xchg_dummy *)(x))
-
-#include <mach/blackfin.h>
-
-static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
-				   int size)
-{
-	unsigned long tmp = 0;
-	unsigned long flags;
-
-	flags = hard_local_irq_save();
-
-	switch (size) {
-	case 1:
-		__asm__ __volatile__
-			("%0 = b%2 (z);\n\t"
-			 "b%2 = %1;\n\t"
-			 : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
-		break;
-	case 2:
-		__asm__ __volatile__
-			("%0 = w%2 (z);\n\t"
-			 "w%2 = %1;\n\t"
-			 : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
-		break;
-	case 4:
-		__asm__ __volatile__
-			("%0 = %2;\n\t"
-			 "%2 = %1;\n\t"
-			 : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory");
-		break;
-	}
-	hard_local_irq_restore(flags);
-	return tmp;
-}
-
-#include <asm-generic/cmpxchg-local.h>
-
-/*
- * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
- * them available.
- */
-#define cmpxchg_local(ptr, o, n)				  	       \
-	((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
-			(unsigned long)(n), sizeof(*(ptr))))
-#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
-
-#include <asm-generic/cmpxchg.h>
-
-#endif /* !CONFIG_SMP */
-
-#define xchg(ptr, x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
-#define tas(ptr) ((void)xchg((ptr), 1))
-
-#define prepare_to_switch()     do { } while(0)
-
-/*
- * switch_to(n) should switch tasks to task ptr, first checking that
- * ptr isn't the current task, in which case it does nothing.
- */
-
-#include <asm/l1layout.h>
-#include <asm/mem_map.h>
-
-asmlinkage struct task_struct *resume(struct task_struct *prev, struct task_struct *next);
-
-#ifndef CONFIG_SMP
-#define switch_to(prev,next,last) \
-do {    \
-	memcpy (&task_thread_info(prev)->l1_task_info, L1_SCRATCH_TASK_INFO, \
-		sizeof *L1_SCRATCH_TASK_INFO); \
-	memcpy (L1_SCRATCH_TASK_INFO, &task_thread_info(next)->l1_task_info, \
-		sizeof *L1_SCRATCH_TASK_INFO); \
-	(last) = resume (prev, next);   \
-} while (0)
-#else
-#define switch_to(prev, next, last) \
-do {    \
-	(last) = resume(prev, next);   \
-} while (0)
-#endif
-
-#endif	/* _BLACKFIN_SYSTEM_H */
+/* FILE TO BE DELETED. DO NOT ADD STUFF HERE! */
+#include <asm/barrier.h>
+#include <asm/cmpxchg.h>
+#include <asm/exec.h>
+#include <asm/switch_to.h>