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-rw-r--r--arch/powerpc/include/asm/atomic.h8
-rw-r--r--arch/powerpc/include/asm/auxvec.h2
-rw-r--r--arch/powerpc/include/asm/barrier.h68
-rw-r--r--arch/powerpc/include/asm/bug.h11
-rw-r--r--arch/powerpc/include/asm/cache.h16
-rw-r--r--arch/powerpc/include/asm/cmpxchg.h309
-rw-r--r--arch/powerpc/include/asm/debug.h56
-rw-r--r--arch/powerpc/include/asm/dma.h1
-rw-r--r--arch/powerpc/include/asm/exec.h9
-rw-r--r--arch/powerpc/include/asm/hw_breakpoint.h2
-rw-r--r--arch/powerpc/include/asm/processor.h30
-rw-r--r--arch/powerpc/include/asm/reg_booke.h5
-rw-r--r--arch/powerpc/include/asm/rtas.h2
-rw-r--r--arch/powerpc/include/asm/runlatch.h45
-rw-r--r--arch/powerpc/include/asm/setup.h24
-rw-r--r--arch/powerpc/include/asm/switch_to.h65
-rw-r--r--arch/powerpc/include/asm/system.h592
17 files changed, 644 insertions, 601 deletions
diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h
index 14174e838ad..da29032ae38 100644
--- a/arch/powerpc/include/asm/atomic.h
+++ b/arch/powerpc/include/asm/atomic.h
@@ -5,13 +5,9 @@
* PowerPC atomic operations
*/
-#include <linux/types.h>
-
#ifdef __KERNEL__
-#include <linux/compiler.h>
-#include <asm/synch.h>
-#include <asm/asm-compat.h>
-#include <asm/system.h>
+#include <linux/types.h>
+#include <asm/cmpxchg.h>
#define ATOMIC_INIT(i) { (i) }
diff --git a/arch/powerpc/include/asm/auxvec.h b/arch/powerpc/include/asm/auxvec.h
index 19a099b62cd..ce17d2c9eb4 100644
--- a/arch/powerpc/include/asm/auxvec.h
+++ b/arch/powerpc/include/asm/auxvec.h
@@ -16,4 +16,6 @@
*/
#define AT_SYSINFO_EHDR 33
+#define AT_VECTOR_SIZE_ARCH 6 /* entries in ARCH_DLINFO */
+
#endif
diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h
new file mode 100644
index 00000000000..ae782254e73
--- /dev/null
+++ b/arch/powerpc/include/asm/barrier.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
+ */
+#ifndef _ASM_POWERPC_BARRIER_H
+#define _ASM_POWERPC_BARRIER_H
+
+/*
+ * Memory barrier.
+ * The sync instruction guarantees that all memory accesses initiated
+ * by this processor have been performed (with respect to all other
+ * mechanisms that access memory). The eieio instruction is a barrier
+ * providing an ordering (separately) for (a) cacheable stores and (b)
+ * loads and stores to non-cacheable memory (e.g. I/O devices).
+ *
+ * mb() prevents loads and stores being reordered across this point.
+ * rmb() prevents loads being reordered across this point.
+ * wmb() prevents stores being reordered across this point.
+ * read_barrier_depends() prevents data-dependent loads being reordered
+ * across this point (nop on PPC).
+ *
+ * *mb() variants without smp_ prefix must order all types of memory
+ * operations with one another. sync is the only instruction sufficient
+ * to do this.
+ *
+ * For the smp_ barriers, ordering is for cacheable memory operations
+ * only. We have to use the sync instruction for smp_mb(), since lwsync
+ * doesn't order loads with respect to previous stores. Lwsync can be
+ * used for smp_rmb() and smp_wmb().
+ *
+ * However, on CPUs that don't support lwsync, lwsync actually maps to a
+ * heavy-weight sync, so smp_wmb() can be a lighter-weight eieio.
+ */
+#define mb() __asm__ __volatile__ ("sync" : : : "memory")
+#define rmb() __asm__ __volatile__ ("sync" : : : "memory")
+#define wmb() __asm__ __volatile__ ("sync" : : : "memory")
+#define read_barrier_depends() do { } while(0)
+
+#define set_mb(var, value) do { var = value; mb(); } while (0)
+
+#ifdef CONFIG_SMP
+
+#ifdef __SUBARCH_HAS_LWSYNC
+# define SMPWMB LWSYNC
+#else
+# define SMPWMB eieio
+#endif
+
+#define smp_mb() mb()
+#define smp_rmb() __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory")
+#define smp_wmb() __asm__ __volatile__ (stringify_in_c(SMPWMB) : : :"memory")
+#define smp_read_barrier_depends() read_barrier_depends()
+#else
+#define smp_mb() barrier()
+#define smp_rmb() barrier()
+#define smp_wmb() barrier()
+#define smp_read_barrier_depends() do { } while(0)
+#endif /* CONFIG_SMP */
+
+/*
+ * This is a barrier which prevents following instructions from being
+ * started until the value of the argument x is known. For example, if
+ * x is a variable loaded from memory, this prevents following
+ * instructions from being executed until the load has been performed.
+ */
+#define data_barrier(x) \
+ asm volatile("twi 0,%0,0; isync" : : "r" (x) : "memory");
+
+#endif /* _ASM_POWERPC_BARRIER_H */
diff --git a/arch/powerpc/include/asm/bug.h b/arch/powerpc/include/asm/bug.h
index 065c590c991..3eb53d74107 100644
--- a/arch/powerpc/include/asm/bug.h
+++ b/arch/powerpc/include/asm/bug.h
@@ -126,5 +126,16 @@
#include <asm-generic/bug.h>
+#ifndef __ASSEMBLY__
+
+struct pt_regs;
+extern int do_page_fault(struct pt_regs *, unsigned long, unsigned long);
+extern void bad_page_fault(struct pt_regs *, unsigned long, int);
+extern void _exception(int, struct pt_regs *, int, unsigned long);
+extern void die(const char *, struct pt_regs *, long);
+extern void print_backtrace(unsigned long *);
+
+#endif /* !__ASSEMBLY__ */
+
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_BUG_H */
diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h
index 4b509411ad8..9e495c9a6a8 100644
--- a/arch/powerpc/include/asm/cache.h
+++ b/arch/powerpc/include/asm/cache.h
@@ -42,8 +42,24 @@ extern struct ppc64_caches ppc64_caches;
#endif /* __powerpc64__ && ! __ASSEMBLY__ */
#if !defined(__ASSEMBLY__)
+
#define __read_mostly __attribute__((__section__(".data..read_mostly")))
+
+#ifdef CONFIG_6xx
+extern long _get_L2CR(void);
+extern long _get_L3CR(void);
+extern void _set_L2CR(unsigned long);
+extern void _set_L3CR(unsigned long);
+#else
+#define _get_L2CR() 0L
+#define _get_L3CR() 0L
+#define _set_L2CR(val) do { } while(0)
+#define _set_L3CR(val) do { } while(0)
#endif
+extern void cacheable_memzero(void *p, unsigned int nb);
+extern void *cacheable_memcpy(void *, const void *, unsigned int);
+
+#endif /* !__ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_CACHE_H */
diff --git a/arch/powerpc/include/asm/cmpxchg.h b/arch/powerpc/include/asm/cmpxchg.h
new file mode 100644
index 00000000000..e245aab7f19
--- /dev/null
+++ b/arch/powerpc/include/asm/cmpxchg.h
@@ -0,0 +1,309 @@
+#ifndef _ASM_POWERPC_CMPXCHG_H_
+#define _ASM_POWERPC_CMPXCHG_H_
+
+#ifdef __KERNEL__
+#include <linux/compiler.h>
+#include <asm/synch.h>
+#include <asm/asm-compat.h>
+
+/*
+ * Atomic exchange
+ *
+ * Changes the memory location '*ptr' to be val and returns
+ * the previous value stored there.
+ */
+static __always_inline unsigned long
+__xchg_u32(volatile void *p, unsigned long val)
+{
+ unsigned long prev;
+
+ __asm__ __volatile__(
+ PPC_RELEASE_BARRIER
+"1: lwarx %0,0,%2 \n"
+ PPC405_ERR77(0,%2)
+" stwcx. %3,0,%2 \n\
+ bne- 1b"
+ PPC_ACQUIRE_BARRIER
+ : "=&r" (prev), "+m" (*(volatile unsigned int *)p)
+ : "r" (p), "r" (val)
+ : "cc", "memory");
+
+ return prev;
+}
+
+/*
+ * Atomic exchange
+ *
+ * Changes the memory location '*ptr' to be val and returns
+ * the previous value stored there.
+ */
+static __always_inline unsigned long
+__xchg_u32_local(volatile void *p, unsigned long val)
+{
+ unsigned long prev;
+
+ __asm__ __volatile__(
+"1: lwarx %0,0,%2 \n"
+ PPC405_ERR77(0,%2)
+" stwcx. %3,0,%2 \n\
+ bne- 1b"
+ : "=&r" (prev), "+m" (*(volatile unsigned int *)p)
+ : "r" (p), "r" (val)
+ : "cc", "memory");
+
+ return prev;
+}
+
+#ifdef CONFIG_PPC64
+static __always_inline unsigned long
+__xchg_u64(volatile void *p, unsigned long val)
+{
+ unsigned long prev;
+
+ __asm__ __volatile__(
+ PPC_RELEASE_BARRIER
+"1: ldarx %0,0,%2 \n"
+ PPC405_ERR77(0,%2)
+" stdcx. %3,0,%2 \n\
+ bne- 1b"
+ PPC_ACQUIRE_BARRIER
+ : "=&r" (prev), "+m" (*(volatile unsigned long *)p)
+ : "r" (p), "r" (val)
+ : "cc", "memory");
+
+ return prev;
+}
+
+static __always_inline unsigned long
+__xchg_u64_local(volatile void *p, unsigned long val)
+{
+ unsigned long prev;
+
+ __asm__ __volatile__(
+"1: ldarx %0,0,%2 \n"
+ PPC405_ERR77(0,%2)
+" stdcx. %3,0,%2 \n\
+ bne- 1b"
+ : "=&r" (prev), "+m" (*(volatile unsigned long *)p)
+ : "r" (p), "r" (val)
+ : "cc", "memory");
+
+ return prev;
+}
+#endif
+
+/*
+ * This function doesn't exist, so you'll get a linker error
+ * if something tries to do an invalid xchg().
+ */
+extern void __xchg_called_with_bad_pointer(void);
+
+static __always_inline unsigned long
+__xchg(volatile void *ptr, unsigned long x, unsigned int size)
+{
+ switch (size) {
+ case 4:
+ return __xchg_u32(ptr, x);
+#ifdef CONFIG_PPC64
+ case 8:
+ return __xchg_u64(ptr, x);
+#endif
+ }
+ __xchg_called_with_bad_pointer();
+ return x;
+}
+
+static __always_inline unsigned long
+__xchg_local(volatile void *ptr, unsigned long x, unsigned int size)
+{
+ switch (size) {
+ case 4:
+ return __xchg_u32_local(ptr, x);
+#ifdef CONFIG_PPC64
+ case 8:
+ return __xchg_u64_local(ptr, x);
+#endif
+ }
+ __xchg_called_with_bad_pointer();
+ return x;
+}
+#define xchg(ptr,x) \
+ ({ \
+ __typeof__(*(ptr)) _x_ = (x); \
+ (__typeof__(*(ptr))) __xchg((ptr), (unsigned long)_x_, sizeof(*(ptr))); \
+ })
+
+#define xchg_local(ptr,x) \
+ ({ \
+ __typeof__(*(ptr)) _x_ = (x); \
+ (__typeof__(*(ptr))) __xchg_local((ptr), \
+ (unsigned long)_x_, sizeof(*(ptr))); \
+ })
+
+/*
+ * Compare and exchange - if *p == old, set it to new,
+ * and return the old value of *p.
+ */
+#define __HAVE_ARCH_CMPXCHG 1
+
+static __always_inline unsigned long
+__cmpxchg_u32(volatile unsigned int *p, unsigned long old, unsigned long new)
+{
+ unsigned int prev;
+
+ __asm__ __volatile__ (
+ PPC_RELEASE_BARRIER
+"1: lwarx %0,0,%2 # __cmpxchg_u32\n\
+ cmpw 0,%0,%3\n\
+ bne- 2f\n"
+ PPC405_ERR77(0,%2)
+" stwcx. %4,0,%2\n\
+ bne- 1b"
+ PPC_ACQUIRE_BARRIER
+ "\n\
+2:"
+ : "=&r" (prev), "+m" (*p)
+ : "r" (p), "r" (old), "r" (new)
+ : "cc", "memory");
+
+ return prev;
+}
+
+static __always_inline unsigned long
+__cmpxchg_u32_local(volatile unsigned int *p, unsigned long old,
+ unsigned long new)
+{
+ unsigned int prev;
+
+ __asm__ __volatile__ (
+"1: lwarx %0,0,%2 # __cmpxchg_u32\n\
+ cmpw 0,%0,%3\n\
+ bne- 2f\n"
+ PPC405_ERR77(0,%2)
+" stwcx. %4,0,%2\n\
+ bne- 1b"
+ "\n\
+2:"
+ : "=&r" (prev), "+m" (*p)
+ : "r" (p), "r" (old), "r" (new)
+ : "cc", "memory");
+
+ return prev;
+}
+
+#ifdef CONFIG_PPC64
+static __always_inline unsigned long
+__cmpxchg_u64(volatile unsigned long *p, unsigned long old, unsigned long new)
+{
+ unsigned long prev;
+
+ __asm__ __volatile__ (
+ PPC_RELEASE_BARRIER
+"1: ldarx %0,0,%2 # __cmpxchg_u64\n\
+ cmpd 0,%0,%3\n\
+ bne- 2f\n\
+ stdcx. %4,0,%2\n\
+ bne- 1b"
+ PPC_ACQUIRE_BARRIER
+ "\n\
+2:"
+ : "=&r" (prev), "+m" (*p)
+ : "r" (p), "r" (old), "r" (new)
+ : "cc", "memory");
+
+ return prev;
+}
+
+static __always_inline unsigned long
+__cmpxchg_u64_local(volatile unsigned long *p, unsigned long old,
+ unsigned long new)
+{
+ unsigned long prev;
+
+ __asm__ __volatile__ (
+"1: ldarx %0,0,%2 # __cmpxchg_u64\n\
+ cmpd 0,%0,%3\n\
+ bne- 2f\n\
+ stdcx. %4,0,%2\n\
+ bne- 1b"
+ "\n\
+2:"
+ : "=&r" (prev), "+m" (*p)
+ : "r" (p), "r" (old), "r" (new)
+ : "cc", "memory");
+
+ return prev;
+}
+#endif
+
+/* 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 __always_inline unsigned long
+__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new,
+ unsigned int size)
+{
+ switch (size) {
+ case 4:
+ return __cmpxchg_u32(ptr, old, new);
+#ifdef CONFIG_PPC64
+ case 8:
+ return __cmpxchg_u64(ptr, old, new);
+#endif
+ }
+ __cmpxchg_called_with_bad_pointer();
+ return old;
+}
+
+static __always_inline unsigned long
+__cmpxchg_local(volatile void *ptr, unsigned long old, unsigned long new,
+ unsigned int size)
+{
+ switch (size) {
+ case 4:
+ return __cmpxchg_u32_local(ptr, old, new);
+#ifdef CONFIG_PPC64
+ case 8:
+ return __cmpxchg_u64_local(ptr, old, new);
+#endif
+ }
+ __cmpxchg_called_with_bad_pointer();
+ return old;
+}
+
+#define cmpxchg(ptr, o, n) \
+ ({ \
+ __typeof__(*(ptr)) _o_ = (o); \
+ __typeof__(*(ptr)) _n_ = (n); \
+ (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_, \
+ (unsigned long)_n_, sizeof(*(ptr))); \
+ })
+
+
+#define cmpxchg_local(ptr, o, n) \
+ ({ \
+ __typeof__(*(ptr)) _o_ = (o); \
+ __typeof__(*(ptr)) _n_ = (n); \
+ (__typeof__(*(ptr))) __cmpxchg_local((ptr), (unsigned long)_o_, \
+ (unsigned long)_n_, sizeof(*(ptr))); \
+ })
+
+#ifdef CONFIG_PPC64
+#define cmpxchg64(ptr, o, n) \
+ ({ \
+ BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
+ cmpxchg((ptr), (o), (n)); \
+ })
+#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 /* __KERNEL__ */
+#endif /* _ASM_POWERPC_CMPXCHG_H_ */
diff --git a/arch/powerpc/include/asm/debug.h b/arch/powerpc/include/asm/debug.h
new file mode 100644
index 00000000000..716d2f089eb
--- /dev/null
+++ b/arch/powerpc/include/asm/debug.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
+ */
+#ifndef _ASM_POWERPC_DEBUG_H
+#define _ASM_POWERPC_DEBUG_H
+
+struct pt_regs;
+
+extern struct dentry *powerpc_debugfs_root;
+
+#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC)
+
+extern int (*__debugger)(struct pt_regs *regs);
+extern int (*__debugger_ipi)(struct pt_regs *regs);
+extern int (*__debugger_bpt)(struct pt_regs *regs);
+extern int (*__debugger_sstep)(struct pt_regs *regs);
+extern int (*__debugger_iabr_match)(struct pt_regs *regs);
+extern int (*__debugger_dabr_match)(struct pt_regs *regs);
+extern int (*__debugger_fault_handler)(struct pt_regs *regs);
+
+#define DEBUGGER_BOILERPLATE(__NAME) \
+static inline int __NAME(struct pt_regs *regs) \
+{ \
+ if (unlikely(__ ## __NAME)) \
+ return __ ## __NAME(regs); \
+ return 0; \
+}
+
+DEBUGGER_BOILERPLATE(debugger)
+DEBUGGER_BOILERPLATE(debugger_ipi)
+DEBUGGER_BOILERPLATE(debugger_bpt)
+DEBUGGER_BOILERPLATE(debugger_sstep)
+DEBUGGER_BOILERPLATE(debugger_iabr_match)
+DEBUGGER_BOILERPLATE(debugger_dabr_match)
+DEBUGGER_BOILERPLATE(debugger_fault_handler)
+
+#else
+static inline int debugger(struct pt_regs *regs) { return 0; }
+static inline int debugger_ipi(struct pt_regs *regs) { return 0; }
+static inline int debugger_bpt(struct pt_regs *regs) { return 0; }
+static inline int debugger_sstep(struct pt_regs *regs) { return 0; }
+static inline int debugger_iabr_match(struct pt_regs *regs) { return 0; }
+static inline int debugger_dabr_match(struct pt_regs *regs) { return 0; }
+static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; }
+#endif
+
+extern int set_dabr(unsigned long dabr);
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+extern void do_send_trap(struct pt_regs *regs, unsigned long address,
+ unsigned long error_code, int signal_code, int brkpt);
+#else
+extern void do_dabr(struct pt_regs *regs, unsigned long address,
+ unsigned long error_code);
+#endif
+
+#endif /* _ASM_POWERPC_DEBUG_H */
diff --git a/arch/powerpc/include/asm/dma.h b/arch/powerpc/include/asm/dma.h
index adadb994361..f6813e919bb 100644
--- a/arch/powerpc/include/asm/dma.h
+++ b/arch/powerpc/include/asm/dma.h
@@ -24,7 +24,6 @@
#include <asm/io.h>
#include <linux/spinlock.h>
-#include <asm/system.h>
#ifndef MAX_DMA_CHANNELS
#define MAX_DMA_CHANNELS 8
diff --git a/arch/powerpc/include/asm/exec.h b/arch/powerpc/include/asm/exec.h
new file mode 100644
index 00000000000..8196e9c7d7e
--- /dev/null
+++ b/arch/powerpc/include/asm/exec.h
@@ -0,0 +1,9 @@
+/*
+ * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
+ */
+#ifndef _ASM_POWERPC_EXEC_H
+#define _ASM_POWERPC_EXEC_H
+
+extern unsigned long arch_align_stack(unsigned long sp);
+
+#endif /* _ASM_POWERPC_EXEC_H */
diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h
index 80fd4d2b4a6..be04330af75 100644
--- a/arch/powerpc/include/asm/hw_breakpoint.h
+++ b/arch/powerpc/include/asm/hw_breakpoint.h
@@ -35,7 +35,7 @@ struct arch_hw_breakpoint {
#include <linux/kdebug.h>
#include <asm/reg.h>
-#include <asm/system.h>
+#include <asm/debug.h>
struct perf_event;
struct pmu;
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index b585bff1a02..8e2d0371fe1 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -385,6 +385,36 @@ static inline unsigned long get_clean_sp(struct pt_regs *regs, int is_32)
extern unsigned long cpuidle_disable;
enum idle_boot_override {IDLE_NO_OVERRIDE = 0, IDLE_POWERSAVE_OFF};
+extern int powersave_nap; /* set if nap mode can be used in idle loop */
+void cpu_idle_wait(void);
+
+#ifdef CONFIG_PSERIES_IDLE
+extern void update_smt_snooze_delay(int snooze);
+extern int pseries_notify_cpuidle_add_cpu(int cpu);
+#else
+static inline void update_smt_snooze_delay(int snooze) {}
+static inline int pseries_notify_cpuidle_add_cpu(int cpu) { return 0; }
+#endif
+
+extern void flush_instruction_cache(void);
+extern void hard_reset_now(void);
+extern void poweroff_now(void);
+extern int fix_alignment(struct pt_regs *);
+extern void cvt_fd(float *from, double *to);
+extern void cvt_df(double *from, float *to);
+extern void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val);
+
+#ifdef CONFIG_PPC64
+/*
+ * We handle most unaligned accesses in hardware. On the other hand
+ * unaligned DMA can be very expensive on some ppc64 IO chips (it does
+ * powers of 2 writes until it reaches sufficient alignment).
+ *
+ * Based on this we disable the IP header alignment in network drivers.
+ */
+#define NET_IP_ALIGN 0
+#endif
+
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_PROCESSOR_H */
diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h
index 8a97aa7289d..b86faa9107d 100644
--- a/arch/powerpc/include/asm/reg_booke.h
+++ b/arch/powerpc/include/asm/reg_booke.h
@@ -15,6 +15,11 @@
#ifndef __ASM_POWERPC_REG_BOOKE_H__
#define __ASM_POWERPC_REG_BOOKE_H__
+#ifdef CONFIG_BOOKE_WDT
+extern u32 booke_wdt_enabled;
+extern u32 booke_wdt_period;
+#endif /* CONFIG_BOOKE_WDT */
+
/* Machine State Register (MSR) Fields */
#define MSR_GS (1<<28) /* Guest state */
#define MSR_UCLE (1<<26) /* User-mode cache lock enable */
diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h
index f0a4db31ecb..557cff845de 100644
--- a/arch/powerpc/include/asm/rtas.h
+++ b/arch/powerpc/include/asm/rtas.h
@@ -357,5 +357,7 @@ static inline int page_is_rtas_user_buf(unsigned long pfn)
static inline int page_is_rtas_user_buf(unsigned long pfn) { return 0;}
#endif
+extern int call_rtas(const char *, int, int, unsigned long *, ...);
+
#endif /* __KERNEL__ */
#endif /* _POWERPC_RTAS_H */
diff --git a/arch/powerpc/include/asm/runlatch.h b/arch/powerpc/include/asm/runlatch.h
new file mode 100644
index 00000000000..54e9b963876
--- /dev/null
+++ b/arch/powerpc/include/asm/runlatch.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
+ */
+#ifndef _ASM_POWERPC_RUNLATCH_H
+#define _ASM_POWERPC_RUNLATCH_H
+
+#ifdef CONFIG_PPC64
+
+extern void __ppc64_runlatch_on(void);
+extern void __ppc64_runlatch_off(void);
+
+/*
+ * We manually hard enable-disable, this is called
+ * in the idle loop and we don't want to mess up
+ * with soft-disable/enable & interrupt replay.
+ */
+#define ppc64_runlatch_off() \
+ do { \
+ if (cpu_has_feature(CPU_FTR_CTRL) && \
+ test_thread_local_flags(_TLF_RUNLATCH)) { \
+ unsigned long msr = mfmsr(); \
+ __hard_irq_disable(); \
+ __ppc64_runlatch_off(); \
+ if (msr & MSR_EE) \
+ __hard_irq_enable(); \
+ } \
+ } while (0)
+
+#define ppc64_runlatch_on() \
+ do { \
+ if (cpu_has_feature(CPU_FTR_CTRL) && \
+ !test_thread_local_flags(_TLF_RUNLATCH)) { \
+ unsigned long msr = mfmsr(); \
+ __hard_irq_disable(); \
+ __ppc64_runlatch_on(); \
+ if (msr & MSR_EE) \
+ __hard_irq_enable(); \
+ } \
+ } while (0)
+#else
+#define ppc64_runlatch_on()
+#define ppc64_runlatch_off()
+#endif /* CONFIG_PPC64 */
+
+#endif /* _ASM_POWERPC_RUNLATCH_H */
diff --git a/arch/powerpc/include/asm/setup.h b/arch/powerpc/include/asm/setup.h
index 186e0fb835b..d084ce195fc 100644
--- a/arch/powerpc/include/asm/setup.h
+++ b/arch/powerpc/include/asm/setup.h
@@ -5,6 +5,28 @@
#ifndef __ASSEMBLY__
extern void ppc_printk_progress(char *s, unsigned short hex);
-#endif
+
+extern unsigned int rtas_data;
+extern int mem_init_done; /* set on boot once kmalloc can be called */
+extern int init_bootmem_done; /* set once bootmem is available */
+extern phys_addr_t memory_limit;
+extern unsigned long klimit;
+extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
+
+extern void via_cuda_init(void);
+extern void read_rtc_time(void);
+extern void pmac_find_display(void);
+
+struct device_node;
+extern void note_scsi_host(struct device_node *, void *);
+
+/* Used in very early kernel initialization. */
+extern unsigned long reloc_offset(void);
+extern unsigned long add_reloc_offset(unsigned long);
+extern void reloc_got2(unsigned long);
+
+#define PTRRELOC(x) ((typeof(x)) add_reloc_offset((unsigned long)(x)))
+
+#endif /* !__ASSEMBLY__ */
#endif /* _ASM_POWERPC_SETUP_H */
diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h
new file mode 100644
index 00000000000..caf82d0a00d
--- /dev/null
+++ b/arch/powerpc/include/asm/switch_to.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
+ */
+#ifndef _ASM_POWERPC_SWITCH_TO_H
+#define _ASM_POWERPC_SWITCH_TO_H
+
+struct thread_struct;
+struct task_struct;
+struct pt_regs;
+
+extern struct task_struct *__switch_to(struct task_struct *,
+ struct task_struct *);
+#define switch_to(prev, next, last) ((last) = __switch_to((prev), (next)))
+
+struct thread_struct;
+extern struct task_struct *_switch(struct thread_struct *prev,
+ struct thread_struct *next);
+
+extern void giveup_fpu(struct task_struct *);
+extern void disable_kernel_fp(void);
+extern void enable_kernel_fp(void);
+extern void flush_fp_to_thread(struct task_struct *);
+extern void enable_kernel_altivec(void);
+extern void giveup_altivec(struct task_struct *);
+extern void load_up_altivec(struct task_struct *);
+extern int emulate_altivec(struct pt_regs *);
+extern void __giveup_vsx(struct task_struct *);
+extern void giveup_vsx(struct task_struct *);
+extern void enable_kernel_spe(void);
+extern void giveup_spe(struct task_struct *);
+extern void load_up_spe(struct task_struct *);
+
+#ifndef CONFIG_SMP
+extern void discard_lazy_cpu_state(void);
+#else
+static inline void discard_lazy_cpu_state(void)
+{
+}
+#endif
+
+#ifdef CONFIG_ALTIVEC
+extern void flush_altivec_to_thread(struct task_struct *);
+#else
+static inline void flush_altivec_to_thread(struct task_struct *t)
+{
+}
+#endif
+
+#ifdef CONFIG_VSX
+extern void flush_vsx_to_thread(struct task_struct *);
+#else
+static inline void flush_vsx_to_thread(struct task_struct *t)
+{
+}
+#endif
+
+#ifdef CONFIG_SPE
+extern void flush_spe_to_thread(struct task_struct *);
+#else
+static inline void flush_spe_to_thread(struct task_struct *t)
+{
+}
+#endif
+
+#endif /* _ASM_POWERPC_SWITCH_TO_H */
diff --git a/arch/powerpc/include/asm/system.h b/arch/powerpc/include/asm/system.h
deleted file mode 100644
index a02883d5af4..00000000000
--- a/arch/powerpc/include/asm/system.h
+++ /dev/null
@@ -1,592 +0,0 @@
-/*
- * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
- */
-#ifndef _ASM_POWERPC_SYSTEM_H
-#define _ASM_POWERPC_SYSTEM_H
-
-#include <linux/kernel.h>
-#include <linux/irqflags.h>
-
-#include <asm/hw_irq.h>
-
-/*
- * Memory barrier.
- * The sync instruction guarantees that all memory accesses initiated
- * by this processor have been performed (with respect to all other
- * mechanisms that access memory). The eieio instruction is a barrier
- * providing an ordering (separately) for (a) cacheable stores and (b)
- * loads and stores to non-cacheable memory (e.g. I/O devices).
- *
- * mb() prevents loads and stores being reordered across this point.
- * rmb() prevents loads being reordered across this point.
- * wmb() prevents stores being reordered across this point.
- * read_barrier_depends() prevents data-dependent loads being reordered
- * across this point (nop on PPC).
- *
- * *mb() variants without smp_ prefix must order all types of memory
- * operations with one another. sync is the only instruction sufficient
- * to do this.
- *
- * For the smp_ barriers, ordering is for cacheable memory operations
- * only. We have to use the sync instruction for smp_mb(), since lwsync
- * doesn't order loads with respect to previous stores. Lwsync can be
- * used for smp_rmb() and smp_wmb().
- *
- * However, on CPUs that don't support lwsync, lwsync actually maps to a
- * heavy-weight sync, so smp_wmb() can be a lighter-weight eieio.
- */
-#define mb() __asm__ __volatile__ ("sync" : : : "memory")
-#define rmb() __asm__ __volatile__ ("sync" : : : "memory")
-#define wmb() __asm__ __volatile__ ("sync" : : : "memory")
-#define read_barrier_depends() do { } while(0)
-
-#define set_mb(var, value) do { var = value; mb(); } while (0)
-
-#ifdef __KERNEL__
-#define AT_VECTOR_SIZE_ARCH 6 /* entries in ARCH_DLINFO */
-#ifdef CONFIG_SMP
-
-#ifdef __SUBARCH_HAS_LWSYNC
-# define SMPWMB LWSYNC
-#else
-# define SMPWMB eieio
-#endif
-
-#define smp_mb() mb()
-#define smp_rmb() __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory")
-#define smp_wmb() __asm__ __volatile__ (stringify_in_c(SMPWMB) : : :"memory")
-#define smp_read_barrier_depends() read_barrier_depends()
-#else
-#define smp_mb() barrier()
-#define smp_rmb() barrier()
-#define smp_wmb() barrier()
-#define smp_read_barrier_depends() do { } while(0)
-#endif /* CONFIG_SMP */
-
-/*
- * This is a barrier which prevents following instructions from being
- * started until the value of the argument x is known. For example, if
- * x is a variable loaded from memory, this prevents following
- * instructions from being executed until the load has been performed.
- */
-#define data_barrier(x) \
- asm volatile("twi 0,%0,0; isync" : : "r" (x) : "memory");
-
-struct task_struct;
-struct pt_regs;
-
-#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC)
-
-extern int (*__debugger)(struct pt_regs *regs);
-extern int (*__debugger_ipi)(struct pt_regs *regs);
-extern int (*__debugger_bpt)(struct pt_regs *regs);
-extern int (*__debugger_sstep)(struct pt_regs *regs);
-extern int (*__debugger_iabr_match)(struct pt_regs *regs);
-extern int (*__debugger_dabr_match)(struct pt_regs *regs);
-extern int (*__debugger_fault_handler)(struct pt_regs *regs);
-
-#define DEBUGGER_BOILERPLATE(__NAME) \
-static inline int __NAME(struct pt_regs *regs) \
-{ \
- if (unlikely(__ ## __NAME)) \
- return __ ## __NAME(regs); \
- return 0; \
-}
-
-DEBUGGER_BOILERPLATE(debugger)
-DEBUGGER_BOILERPLATE(debugger_ipi)
-DEBUGGER_BOILERPLATE(debugger_bpt)
-DEBUGGER_BOILERPLATE(debugger_sstep)
-DEBUGGER_BOILERPLATE(debugger_iabr_match)
-DEBUGGER_BOILERPLATE(debugger_dabr_match)
-DEBUGGER_BOILERPLATE(debugger_fault_handler)
-
-#else
-static inline int debugger(struct pt_regs *regs) { return 0; }
-static inline int debugger_ipi(struct pt_regs *regs) { return 0; }
-static inline int debugger_bpt(struct pt_regs *regs) { return 0; }
-static inline int debugger_sstep(struct pt_regs *regs) { return 0; }
-static inline int debugger_iabr_match(struct pt_regs *regs) { return 0; }
-static inline int debugger_dabr_match(struct pt_regs *regs) { return 0; }
-static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; }
-#endif
-
-extern int set_dabr(unsigned long dabr);
-#ifdef CONFIG_PPC_ADV_DEBUG_REGS
-extern void do_send_trap(struct pt_regs *regs, unsigned long address,
- unsigned long error_code, int signal_code, int brkpt);
-#else
-extern void do_dabr(struct pt_regs *regs, unsigned long address,
- unsigned long error_code);
-#endif
-extern void print_backtrace(unsigned long *);
-extern void flush_instruction_cache(void);
-extern void hard_reset_now(void);
-extern void poweroff_now(void);
-
-#ifdef CONFIG_6xx
-extern long _get_L2CR(void);
-extern long _get_L3CR(void);
-extern void _set_L2CR(unsigned long);
-extern void _set_L3CR(unsigned long);
-#else
-#define _get_L2CR() 0L
-#define _get_L3CR() 0L
-#define _set_L2CR(val) do { } while(0)
-#define _set_L3CR(val) do { } while(0)
-#endif
-
-extern void via_cuda_init(void);
-extern void read_rtc_time(void);
-extern void pmac_find_display(void);
-extern void giveup_fpu(struct task_struct *);
-extern void disable_kernel_fp(void);
-extern void enable_kernel_fp(void);
-extern void flush_fp_to_thread(struct task_struct *);
-extern void enable_kernel_altivec(void);
-extern void giveup_altivec(struct task_struct *);
-extern void load_up_altivec(struct task_struct *);
-extern int emulate_altivec(struct pt_regs *);
-extern void __giveup_vsx(struct task_struct *);
-extern void giveup_vsx(struct task_struct *);
-extern void enable_kernel_spe(void);
-extern void giveup_spe(struct task_struct *);
-extern void load_up_spe(struct task_struct *);
-extern int fix_alignment(struct pt_regs *);
-extern void cvt_fd(float *from, double *to);
-extern void cvt_df(double *from, float *to);
-
-#ifndef CONFIG_SMP
-extern void discard_lazy_cpu_state(void);
-#else
-static inline void discard_lazy_cpu_state(void)
-{
-}
-#endif
-
-#ifdef CONFIG_ALTIVEC
-extern void flush_altivec_to_thread(struct task_struct *);
-#else
-static inline void flush_altivec_to_thread(struct task_struct *t)
-{
-}
-#endif
-
-#ifdef CONFIG_VSX
-extern void flush_vsx_to_thread(struct task_struct *);
-#else
-static inline void flush_vsx_to_thread(struct task_struct *t)
-{
-}
-#endif
-
-#ifdef CONFIG_SPE
-extern void flush_spe_to_thread(struct task_struct *);
-#else
-static inline void flush_spe_to_thread(struct task_struct *t)
-{
-}
-#endif
-
-extern int call_rtas(const char *, int, int, unsigned long *, ...);
-extern void cacheable_memzero(void *p, unsigned int nb);
-extern void *cacheable_memcpy(void *, const void *, unsigned int);
-extern int do_page_fault(struct pt_regs *, unsigned long, unsigned long);
-extern void bad_page_fault(struct pt_regs *, unsigned long, int);
-extern void _exception(int, struct pt_regs *, int, unsigned long);
-extern void die(const char *, struct pt_regs *, long);
-extern void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val);
-
-#ifdef CONFIG_BOOKE_WDT
-extern u32 booke_wdt_enabled;
-extern u32 booke_wdt_period;
-#endif /* CONFIG_BOOKE_WDT */
-
-struct device_node;
-extern void note_scsi_host(struct device_node *, void *);
-
-extern struct task_struct *__switch_to(struct task_struct *,
- struct task_struct *);
-#define switch_to(prev, next, last) ((last) = __switch_to((prev), (next)))
-
-struct thread_struct;
-extern struct task_struct *_switch(struct thread_struct *prev,
- struct thread_struct *next);
-
-extern unsigned int rtas_data;
-extern int mem_init_done; /* set on boot once kmalloc can be called */
-extern int init_bootmem_done; /* set once bootmem is available */
-extern phys_addr_t memory_limit;
-extern unsigned long klimit;
-extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
-
-extern int powersave_nap; /* set if nap mode can be used in idle loop */
-void cpu_idle_wait(void);
-
-#ifdef CONFIG_PSERIES_IDLE
-extern void update_smt_snooze_delay(int snooze);
-extern int pseries_notify_cpuidle_add_cpu(int cpu);
-#else
-static inline void update_smt_snooze_delay(int snooze) {}
-static inline int pseries_notify_cpuidle_add_cpu(int cpu) { return 0; }
-#endif
-
-/*
- * Atomic exchange
- *
- * Changes the memory location '*ptr' to be val and returns
- * the previous value stored there.
- */
-static __always_inline unsigned long
-__xchg_u32(volatile void *p, unsigned long val)
-{
- unsigned long prev;
-
- __asm__ __volatile__(
- PPC_RELEASE_BARRIER
-"1: lwarx %0,0,%2 \n"
- PPC405_ERR77(0,%2)
-" stwcx. %3,0,%2 \n\
- bne- 1b"
- PPC_ACQUIRE_BARRIER
- : "=&r" (prev), "+m" (*(volatile unsigned int *)p)
- : "r" (p), "r" (val)
- : "cc", "memory");
-
- return prev;
-}
-
-/*
- * Atomic exchange
- *
- * Changes the memory location '*ptr' to be val and returns
- * the previous value stored there.
- */
-static __always_inline unsigned long
-__xchg_u32_local(volatile void *p, unsigned long val)
-{
- unsigned long prev;
-
- __asm__ __volatile__(
-"1: lwarx %0,0,%2 \n"
- PPC405_ERR77(0,%2)
-" stwcx. %3,0,%2 \n\
- bne- 1b"
- : "=&r" (prev), "+m" (*(volatile unsigned int *)p)
- : "r" (p), "r" (val)
- : "cc", "memory");
-
- return prev;
-}
-
-#ifdef CONFIG_PPC64
-static __always_inline unsigned long
-__xchg_u64(volatile void *p, unsigned long val)
-{
- unsigned long prev;
-
- __asm__ __volatile__(
- PPC_RELEASE_BARRIER
-"1: ldarx %0,0,%2 \n"
- PPC405_ERR77(0,%2)
-" stdcx. %3,0,%2 \n\
- bne- 1b"
- PPC_ACQUIRE_BARRIER
- : "=&r" (prev), "+m" (*(volatile unsigned long *)p)
- : "r" (p), "r" (val)
- : "cc", "memory");
-
- return prev;
-}
-
-static __always_inline unsigned long
-__xchg_u64_local(volatile void *p, unsigned long val)
-{
- unsigned long prev;
-
- __asm__ __volatile__(
-"1: ldarx %0,0,%2 \n"
- PPC405_ERR77(0,%2)
-" stdcx. %3,0,%2 \n\
- bne- 1b"
- : "=&r" (prev), "+m" (*(volatile unsigned long *)p)
- : "r" (p), "r" (val)
- : "cc", "memory");
-
- return prev;
-}
-#endif
-
-/*
- * This function doesn't exist, so you'll get a linker error
- * if something tries to do an invalid xchg().
- */
-extern void __xchg_called_with_bad_pointer(void);
-
-static __always_inline unsigned long
-__xchg(volatile void *ptr, unsigned long x, unsigned int size)
-{
- switch (size) {
- case 4:
- return __xchg_u32(ptr, x);
-#ifdef CONFIG_PPC64
- case 8:
- return __xchg_u64(ptr, x);
-#endif
- }
- __xchg_called_with_bad_pointer();
- return x;
-}
-
-static __always_inline unsigned long
-__xchg_local(volatile void *ptr, unsigned long x, unsigned int size)
-{
- switch (size) {
- case 4:
- return __xchg_u32_local(ptr, x);
-#ifdef CONFIG_PPC64
- case 8:
- return __xchg_u64_local(ptr, x);
-#endif
- }
- __xchg_called_with_bad_pointer();
- return x;
-}
-#define xchg(ptr,x) \
- ({ \
- __typeof__(*(ptr)) _x_ = (x); \
- (__typeof__(*(ptr))) __xchg((ptr), (unsigned long)_x_, sizeof(*(ptr))); \
- })
-
-#define xchg_local(ptr,x) \
- ({ \
- __typeof__(*(ptr)) _x_ = (x); \
- (__typeof__(*(ptr))) __xchg_local((ptr), \
- (unsigned long)_x_, sizeof(*(ptr))); \
- })
-
-/*
- * Compare and exchange - if *p == old, set it to new,
- * and return the old value of *p.
- */
-#define __HAVE_ARCH_CMPXCHG 1
-
-static __always_inline unsigned long
-__cmpxchg_u32(volatile unsigned int *p, unsigned long old, unsigned long new)
-{
- unsigned int prev;
-
- __asm__ __volatile__ (
- PPC_RELEASE_BARRIER
-"1: lwarx %0,0,%2 # __cmpxchg_u32\n\
- cmpw 0,%0,%3\n\
- bne- 2f\n"
- PPC405_ERR77(0,%2)
-" stwcx. %4,0,%2\n\
- bne- 1b"
- PPC_ACQUIRE_BARRIER
- "\n\
-2:"
- : "=&r" (prev), "+m" (*p)
- : "r" (p), "r" (old), "r" (new)
- : "cc", "memory");
-
- return prev;
-}
-
-static __always_inline unsigned long
-__cmpxchg_u32_local(volatile unsigned int *p, unsigned long old,
- unsigned long new)
-{
- unsigned int prev;
-
- __asm__ __volatile__ (
-"1: lwarx %0,0,%2 # __cmpxchg_u32\n\
- cmpw 0,%0,%3\n\
- bne- 2f\n"
- PPC405_ERR77(0,%2)
-" stwcx. %4,0,%2\n\
- bne- 1b"
- "\n\
-2:"
- : "=&r" (prev), "+m" (*p)
- : "r" (p), "r" (old), "r" (new)
- : "cc", "memory");
-
- return prev;
-}
-
-#ifdef CONFIG_PPC64
-static __always_inline unsigned long
-__cmpxchg_u64(volatile unsigned long *p, unsigned long old, unsigned long new)
-{
- unsigned long prev;
-
- __asm__ __volatile__ (
- PPC_RELEASE_BARRIER
-"1: ldarx %0,0,%2 # __cmpxchg_u64\n\
- cmpd 0,%0,%3\n\
- bne- 2f\n\
- stdcx. %4,0,%2\n\
- bne- 1b"
- PPC_ACQUIRE_BARRIER
- "\n\
-2:"
- : "=&r" (prev), "+m" (*p)
- : "r" (p), "r" (old), "r" (new)
- : "cc", "memory");
-
- return prev;
-}
-
-static __always_inline unsigned long
-__cmpxchg_u64_local(volatile unsigned long *p, unsigned long old,
- unsigned long new)
-{
- unsigned long prev;
-
- __asm__ __volatile__ (
-"1: ldarx %0,0,%2 # __cmpxchg_u64\n\
- cmpd 0,%0,%3\n\
- bne- 2f\n\
- stdcx. %4,0,%2\n\
- bne- 1b"
- "\n\
-2:"
- : "=&r" (prev), "+m" (*p)
- : "r" (p), "r" (old), "r" (new)
- : "cc", "memory");
-
- return prev;
-}
-#endif
-
-/* 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 __always_inline unsigned long
-__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new,
- unsigned int size)
-{
- switch (size) {
- case 4:
- return __cmpxchg_u32(ptr, old, new);
-#ifdef CONFIG_PPC64
- case 8:
- return __cmpxchg_u64(ptr, old, new);
-#endif
- }
- __cmpxchg_called_with_bad_pointer();
- return old;
-}
-
-static __always_inline unsigned long
-__cmpxchg_local(volatile void *ptr, unsigned long old, unsigned long new,
- unsigned int size)
-{
- switch (size) {
- case 4:
- return __cmpxchg_u32_local(ptr, old, new);
-#ifdef CONFIG_PPC64
- case 8:
- return __cmpxchg_u64_local(ptr, old, new);
-#endif
- }
- __cmpxchg_called_with_bad_pointer();
- return old;
-}
-
-#define cmpxchg(ptr, o, n) \
- ({ \
- __typeof__(*(ptr)) _o_ = (o); \
- __typeof__(*(ptr)) _n_ = (n); \
- (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_, \
- (unsigned long)_n_, sizeof(*(ptr))); \
- })
-
-
-#define cmpxchg_local(ptr, o, n) \
- ({ \
- __typeof__(*(ptr)) _o_ = (o); \
- __typeof__(*(ptr)) _n_ = (n); \
- (__typeof__(*(ptr))) __cmpxchg_local((ptr), (unsigned long)_o_, \
- (unsigned long)_n_, sizeof(*(ptr))); \
- })
-
-#ifdef CONFIG_PPC64
-/*
- * We handle most unaligned accesses in hardware. On the other hand
- * unaligned DMA can be very expensive on some ppc64 IO chips (it does
- * powers of 2 writes until it reaches sufficient alignment).
- *
- * Based on this we disable the IP header alignment in network drivers.
- */
-#define NET_IP_ALIGN 0
-
-#define cmpxchg64(ptr, o, n) \
- ({ \
- BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
- cmpxchg((ptr), (o), (n)); \
- })
-#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
-
-extern unsigned long arch_align_stack(unsigned long sp);
-
-/* Used in very early kernel initialization. */
-extern unsigned long reloc_offset(void);
-extern unsigned long add_reloc_offset(unsigned long);
-extern void reloc_got2(unsigned long);
-
-#define PTRRELOC(x) ((typeof(x)) add_reloc_offset((unsigned long)(x)))
-
-extern struct dentry *powerpc_debugfs_root;
-
-#ifdef CONFIG_PPC64
-
-extern void __ppc64_runlatch_on(void);
-extern void __ppc64_runlatch_off(void);
-
-/*
- * We manually hard enable-disable, this is called
- * in the idle loop and we don't want to mess up
- * with soft-disable/enable & interrupt replay.
- */
-#define ppc64_runlatch_off() \
- do { \
- if (cpu_has_feature(CPU_FTR_CTRL) && \
- test_thread_local_flags(_TLF_RUNLATCH)) { \
- unsigned long msr = mfmsr(); \
- __hard_irq_disable(); \
- __ppc64_runlatch_off(); \
- if (msr & MSR_EE) \
- __hard_irq_enable(); \
- } \
- } while (0)
-
-#define ppc64_runlatch_on() \
- do { \
- if (cpu_has_feature(CPU_FTR_CTRL) && \
- !test_thread_local_flags(_TLF_RUNLATCH)) { \
- unsigned long msr = mfmsr(); \
- __hard_irq_disable(); \
- __ppc64_runlatch_on(); \
- if (msr & MSR_EE) \
- __hard_irq_enable(); \
- } \
- } while (0)
-#else
-#define ppc64_runlatch_on()
-#define ppc64_runlatch_off()
-#endif /* CONFIG_PPC64 */
-
-#endif /* __KERNEL__ */
-#endif /* _ASM_POWERPC_SYSTEM_H */