1 files changed, 8 insertions, 192 deletions
diff --git a/include/asm-sparc/spinlock.h b/include/asm-sparc/spinlock.h
index de2249b267c..3b71c50b72e 100644
--- a/include/asm-sparc/spinlock.h
+++ b/include/asm-sparc/spinlock.h
@@ -1,192 +1,8 @@
-/* spinlock.h: 32-bit Sparc spinlock support.
- *
- * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
- */
-
-#ifndef __SPARC_SPINLOCK_H
-#define __SPARC_SPINLOCK_H
-
-#include <linux/threads.h>	/* For NR_CPUS */
-
-#ifndef __ASSEMBLY__
-
-#include <asm/psr.h>
-
-#define __raw_spin_is_locked(lock) (*((volatile unsigned char *)(lock)) != 0)
-
-#define __raw_spin_unlock_wait(lock) \
-	do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0)
-
-static inline void __raw_spin_lock(raw_spinlock_t *lock)
-{
-	__asm__ __volatile__(
-	"\n1:\n\t"
-	"ldstub	[%0], %%g2\n\t"
-	"orcc	%%g2, 0x0, %%g0\n\t"
-	"bne,a	2f\n\t"
-	" ldub	[%0], %%g2\n\t"
-	".subsection	2\n"
-	"2:\n\t"
-	"orcc	%%g2, 0x0, %%g0\n\t"
-	"bne,a	2b\n\t"
-	" ldub	[%0], %%g2\n\t"
-	"b,a	1b\n\t"
-	".previous\n"
-	: /* no outputs */
-	: "r" (lock)
-	: "g2", "memory", "cc");
-}
-
-static inline int __raw_spin_trylock(raw_spinlock_t *lock)
-{
-	unsigned int result;
-	__asm__ __volatile__("ldstub [%1], %0"
-			     : "=r" (result)
-			     : "r" (lock)
-			     : "memory");
-	return (result == 0);
-}
-
-static inline void __raw_spin_unlock(raw_spinlock_t *lock)
-{
-	__asm__ __volatile__("stb %%g0, [%0]" : : "r" (lock) : "memory");
-}
-
-/* Read-write spinlocks, allowing multiple readers
- * but only one writer.
- *
- * NOTE! it is quite common to have readers in interrupts
- * but no interrupt writers. For those circumstances we
- * can "mix" irq-safe locks - any writer needs to get a
- * irq-safe write-lock, but readers can get non-irqsafe
- * read-locks.
- *
- * XXX This might create some problems with my dual spinlock
- * XXX scheme, deadlocks etc. -DaveM
- *
- * Sort of like atomic_t's on Sparc, but even more clever.
- *
- *	------------------------------------
- *	| 24-bit counter           | wlock |  raw_rwlock_t
- *	------------------------------------
- *	 31                       8 7     0
- *
- * wlock signifies the one writer is in or somebody is updating
- * counter. For a writer, if he successfully acquires the wlock,
- * but counter is non-zero, he has to release the lock and wait,
- * till both counter and wlock are zero.
- *
- * Unfortunately this scheme limits us to ~16,000,000 cpus.
- */
-static inline void __read_lock(raw_rwlock_t *rw)
-{
-	register raw_rwlock_t *lp asm("g1");
-	lp = rw;
-	__asm__ __volatile__(
-	"mov	%%o7, %%g4\n\t"
-	"call	___rw_read_enter\n\t"
-	" ldstub	[%%g1 + 3], %%g2\n"
-	: /* no outputs */
-	: "r" (lp)
-	: "g2", "g4", "memory", "cc");
-}
-
-#define __raw_read_lock(lock) \
-do {	unsigned long flags; \
-	local_irq_save(flags); \
-	__read_lock(lock); \
-	local_irq_restore(flags); \
-} while(0)
-
-static inline void __read_unlock(raw_rwlock_t *rw)
-{
-	register raw_rwlock_t *lp asm("g1");
-	lp = rw;
-	__asm__ __volatile__(
-	"mov	%%o7, %%g4\n\t"
-	"call	___rw_read_exit\n\t"
-	" ldstub	[%%g1 + 3], %%g2\n"
-	: /* no outputs */
-	: "r" (lp)
-	: "g2", "g4", "memory", "cc");
-}
-
-#define __raw_read_unlock(lock) \
-do {	unsigned long flags; \
-	local_irq_save(flags); \
-	__read_unlock(lock); \
-	local_irq_restore(flags); \
-} while(0)
-
-static inline void __raw_write_lock(raw_rwlock_t *rw)
-{
-	register raw_rwlock_t *lp asm("g1");
-	lp = rw;
-	__asm__ __volatile__(
-	"mov	%%o7, %%g4\n\t"
-	"call	___rw_write_enter\n\t"
-	" ldstub	[%%g1 + 3], %%g2\n"
-	: /* no outputs */
-	: "r" (lp)
-	: "g2", "g4", "memory", "cc");
-	*(volatile __u32 *)&lp->lock = ~0U;
-}
-
-static inline int __raw_write_trylock(raw_rwlock_t *rw)
-{
-	unsigned int val;
-
-	__asm__ __volatile__("ldstub [%1 + 3], %0"
-			     : "=r" (val)
-			     : "r" (&rw->lock)
-			     : "memory");
-
-	if (val == 0) {
-		val = rw->lock & ~0xff;
-		if (val)
-			((volatile u8*)&rw->lock)[3] = 0;
-		else
-			*(volatile u32*)&rw->lock = ~0U;
-	}
-
-	return (val == 0);
-}
-
-static inline int __read_trylock(raw_rwlock_t *rw)
-{
-	register raw_rwlock_t *lp asm("g1");
-	register int res asm("o0");
-	lp = rw;
-	__asm__ __volatile__(
-	"mov	%%o7, %%g4\n\t"
-	"call	___rw_read_try\n\t"
-	" ldstub	[%%g1 + 3], %%g2\n"
-	: "=r" (res)
-	: "r" (lp)
-	: "g2", "g4", "memory", "cc");
-	return res;
-}
-
-#define __raw_read_trylock(lock) \
-({	unsigned long flags; \
-	int res; \
-	local_irq_save(flags); \
-	res = __read_trylock(lock); \
-	local_irq_restore(flags); \
-	res; \
-})
-
-#define __raw_write_unlock(rw)	do { (rw)->lock = 0; } while(0)
-
-#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)
-
-#define _raw_spin_relax(lock)	cpu_relax()
-#define _raw_read_relax(lock)	cpu_relax()
-#define _raw_write_relax(lock)	cpu_relax()
-
-#define __raw_read_can_lock(rw) (!((rw)->lock & 0xff))
-#define __raw_write_can_lock(rw) (!(rw)->lock)
-
-#endif /* !(__ASSEMBLY__) */
-
-#endif /* __SPARC_SPINLOCK_H */
+#ifndef ___ASM_SPARC_SPINLOCK_H
+#define ___ASM_SPARC_SPINLOCK_H
+#if defined(__sparc__) && defined(__arch64__)
+#include <asm-sparc/spinlock_64.h>
+#else
+#include <asm-sparc/spinlock_32.h>
+#endif
+#endif