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Subject[PATCH 25/29] Disintegrate asm/system.h for Sparc
Date
Disintegrate asm/system.h for Sparc.

Signed-off-by: David Howells <dhowells@redhat.com>
---
arch/sparc/include/asm/atomic_32.h | 97 +++++++++
arch/sparc/include/asm/atomic_64.h | 137 +++++++++++++
arch/sparc/include/asm/barrier.h | 8 +
arch/sparc/include/asm/barrier_32.h | 15 +
arch/sparc/include/asm/barrier_64.h | 56 +++++
arch/sparc/include/asm/bug.h | 3
arch/sparc/include/asm/cacheflush_32.h | 9 +
arch/sparc/include/asm/cacheflush_64.h | 10 +
arch/sparc/include/asm/cpu_type.h | 34 +++
arch/sparc/include/asm/exec.h | 6 +
arch/sparc/include/asm/irqflags_32.h | 1
arch/sparc/include/asm/perfctr.h | 23 ++
arch/sparc/include/asm/pgtable_32.h | 1
arch/sparc/include/asm/processor.h | 3
arch/sparc/include/asm/processor_64.h | 3
arch/sparc/include/asm/ptrace.h | 2
arch/sparc/include/asm/setup.h | 16 ++
arch/sparc/include/asm/switch_to.h | 8 +
arch/sparc/include/asm/switch_to_32.h | 106 ++++++++++
arch/sparc/include/asm/switch_to_64.h | 73 +++++++
arch/sparc/include/asm/system.h | 8 -
arch/sparc/include/asm/system_32.h | 284 ---------------------------
arch/sparc/include/asm/system_64.h | 331 --------------------------------
arch/sparc/include/asm/timer_32.h | 3
arch/sparc/kernel/auxio_32.c | 1
arch/sparc/kernel/devices.c | 1
arch/sparc/kernel/irq.h | 1
arch/sparc/kernel/kgdb_32.c | 1
arch/sparc/kernel/module.c | 1
arch/sparc/kernel/nmi.c | 1
arch/sparc/kernel/pcr.c | 1
arch/sparc/kernel/perf_event.c | 2
arch/sparc/kernel/process_32.c | 1
arch/sparc/kernel/ptrace_32.c | 1
arch/sparc/kernel/reboot.c | 1
arch/sparc/kernel/setup_32.c | 1
arch/sparc/kernel/setup_64.c | 1
arch/sparc/kernel/signal32.c | 1
arch/sparc/kernel/signal_32.c | 1
arch/sparc/kernel/signal_64.c | 2
arch/sparc/kernel/sigutil_32.c | 1
arch/sparc/kernel/sigutil_64.c | 1
arch/sparc/kernel/sparc_ksyms_64.c | 1
arch/sparc/kernel/traps_64.c | 1
arch/sparc/kernel/unaligned_64.c | 1
arch/sparc/kernel/visemul.c | 1
arch/sparc/math-emu/math_64.c | 1
drivers/tty/serial/sunhv.c | 1
drivers/tty/serial/sunsab.c | 1
drivers/tty/serial/sunsu.c | 1
drivers/tty/serial/sunzilog.c | 1
kernel/signal.c | 2
kernel/sysctl.c | 3
53 files changed, 646 insertions(+), 625 deletions(-)
create mode 100644 arch/sparc/include/asm/barrier.h
create mode 100644 arch/sparc/include/asm/barrier_32.h
create mode 100644 arch/sparc/include/asm/barrier_64.h
create mode 100644 arch/sparc/include/asm/cpu_type.h
create mode 100644 arch/sparc/include/asm/exec.h
create mode 100644 arch/sparc/include/asm/switch_to.h
create mode 100644 arch/sparc/include/asm/switch_to_32.h
create mode 100644 arch/sparc/include/asm/switch_to_64.h
delete mode 100644 arch/sparc/include/asm/system.h
delete mode 100644 arch/sparc/include/asm/system_32.h
delete mode 100644 arch/sparc/include/asm/system_64.h
diff --git a/arch/sparc/include/asm/atomic_32.h b/arch/sparc/include/asm/atomic_32.h
index e6d75af..21fec1b 100644
--- a/arch/sparc/include/asm/atomic_32.h
+++ b/arch/sparc/include/asm/atomic_32.h
@@ -12,6 +12,7 @@
#define __ARCH_SPARC_ATOMIC__

#include <linux/types.h>
+#include <asm/btfixup.h>

#include <asm-generic/atomic64.h>

@@ -57,4 +58,100 @@ extern void atomic_set(atomic_t *, int);
#define smp_mb__before_atomic_inc() barrier()
#define smp_mb__after_atomic_inc() barrier()

+/* This has special calling conventions */
+#ifndef CONFIG_SMP
+BTFIXUPDEF_CALL(void, ___xchg32, void)
+#endif
+
+static inline unsigned long xchg_u32(__volatile__ unsigned long *m, unsigned long val)
+{
+#ifdef CONFIG_SMP
+ __asm__ __volatile__("swap [%2], %0"
+ : "=&r" (val)
+ : "0" (val), "r" (m)
+ : "memory");
+ return val;
+#else
+ register unsigned long *ptr asm("g1");
+ register unsigned long ret asm("g2");
+
+ ptr = (unsigned long *) m;
+ ret = val;
+
+ /* Note: this is magic and the nop there is
+ really needed. */
+ __asm__ __volatile__(
+ "mov %%o7, %%g4\n\t"
+ "call ___f____xchg32\n\t"
+ " nop\n\t"
+ : "=&r" (ret)
+ : "0" (ret), "r" (ptr)
+ : "g3", "g4", "g7", "memory", "cc");
+
+ return ret;
+#endif
+}
+
+extern void __xchg_called_with_bad_pointer(void);
+
+static inline unsigned long __xchg(unsigned long x, __volatile__ void * ptr, int size)
+{
+ switch (size) {
+ case 4:
+ return xchg_u32(ptr, x);
+ }
+ __xchg_called_with_bad_pointer();
+ return x;
+}
+
+#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+
+/* Emulate cmpxchg() the same way we emulate atomics,
+ * by hashing the object address and indexing into an array
+ * of spinlocks to get a bit of performance...
+ *
+ * See arch/sparc/lib/atomic32.c for implementation.
+ *
+ * Cribbed from <asm-parisc/atomic.h>
+ */
+#define __HAVE_ARCH_CMPXCHG 1
+
+/* bug catcher for when unsupported size is used - won't link */
+extern void __cmpxchg_called_with_bad_pointer(void);
+/* we only need to support cmpxchg of a u32 on sparc */
+extern unsigned long __cmpxchg_u32(volatile u32 *m, u32 old, u32 new_);
+
+/* don't worry...optimizer will get rid of most of this */
+static inline unsigned long
+__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new_, int size)
+{
+ switch (size) {
+ case 4:
+ return __cmpxchg_u32((u32 *)ptr, (u32)old, (u32)new_);
+ default:
+ __cmpxchg_called_with_bad_pointer();
+ break;
+ }
+ 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))); \
+})
+
+#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))
+
#endif /* !(__ARCH_SPARC_ATOMIC__) */
diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h
index 5ab4e89..913b45e 100644
--- a/arch/sparc/include/asm/atomic_64.h
+++ b/arch/sparc/include/asm/atomic_64.h
@@ -66,6 +66,142 @@ extern long atomic64_sub_ret(long, atomic64_t *);
#define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0)
#define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0)

+static inline unsigned long xchg32(__volatile__ unsigned int *m, unsigned int val)
+{
+ unsigned long tmp1, tmp2;
+
+ __asm__ __volatile__(
+" mov %0, %1\n"
+"1: lduw [%4], %2\n"
+" cas [%4], %2, %0\n"
+" cmp %2, %0\n"
+" bne,a,pn %%icc, 1b\n"
+" mov %1, %0\n"
+ : "=&r" (val), "=&r" (tmp1), "=&r" (tmp2)
+ : "0" (val), "r" (m)
+ : "cc", "memory");
+ return val;
+}
+
+static inline unsigned long xchg64(__volatile__ unsigned long *m, unsigned long val)
+{
+ unsigned long tmp1, tmp2;
+
+ __asm__ __volatile__(
+" mov %0, %1\n"
+"1: ldx [%4], %2\n"
+" casx [%4], %2, %0\n"
+" cmp %2, %0\n"
+" bne,a,pn %%xcc, 1b\n"
+" mov %1, %0\n"
+ : "=&r" (val), "=&r" (tmp1), "=&r" (tmp2)
+ : "0" (val), "r" (m)
+ : "cc", "memory");
+ return val;
+}
+
+#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(unsigned long x, __volatile__ void * ptr,
+ int size)
+{
+ switch (size) {
+ case 4:
+ return xchg32(ptr, x);
+ case 8:
+ return xchg64(ptr, x);
+ }
+ __xchg_called_with_bad_pointer();
+ return x;
+}
+
+/*
+ * 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.
+ */
+
+#include <asm-generic/cmpxchg-local.h>
+
+#define __HAVE_ARCH_CMPXCHG 1
+
+static inline unsigned long
+__cmpxchg_u32(volatile int *m, int old, int new)
+{
+ __asm__ __volatile__("cas [%2], %3, %0"
+ : "=&r" (new)
+ : "0" (new), "r" (m), "r" (old)
+ : "memory");
+
+ return new;
+}
+
+static inline unsigned long
+__cmpxchg_u64(volatile long *m, unsigned long old, unsigned long new)
+{
+ __asm__ __volatile__("casx [%2], %3, %0"
+ : "=&r" (new)
+ : "0" (new), "r" (m), "r" (old)
+ : "memory");
+
+ return new;
+}
+
+/* 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,o,n) \
+ ({ \
+ __typeof__(*(ptr)) _o_ = (o); \
+ __typeof__(*(ptr)) _n_ = (n); \
+ (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_, \
+ (unsigned long)_n_, sizeof(*(ptr))); \
+ })
+
+/*
+ * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
+ * them available.
+ */
+
+static inline unsigned long __cmpxchg_local(volatile void *ptr,
+ unsigned long old,
+ unsigned long new, int size)
+{
+ switch (size) {
+ case 4:
+ case 8: return __cmpxchg(ptr, old, new, size);
+ default:
+ return __cmpxchg_local_generic(ptr, old, new, size);
+ }
+
+ return old;
+}
+
+#define cmpxchg_local(ptr, o, n) \
+ ((__typeof__(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(o), \
+ (unsigned long)(n), sizeof(*(ptr))))
+#define cmpxchg64_local(ptr, o, n) \
+ ({ \
+ BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
+ cmpxchg_local((ptr), (o), (n)); \
+ })
+
#define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n)))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))

@@ -84,7 +220,6 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
return c;
}

-
#define atomic64_cmpxchg(v, o, n) \
((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n)))
#define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
diff --git a/arch/sparc/include/asm/barrier.h b/arch/sparc/include/asm/barrier.h
new file mode 100644
index 0000000..b25f02a
--- /dev/null
+++ b/arch/sparc/include/asm/barrier.h
@@ -0,0 +1,8 @@
+#ifndef ___ASM_SPARC_BARRIER_H
+#define ___ASM_SPARC_BARRIER_H
+#if defined(__sparc__) && defined(__arch64__)
+#include <asm/barrier_64.h>
+#else
+#include <asm/barrier_32.h>
+#endif
+#endif
diff --git a/arch/sparc/include/asm/barrier_32.h b/arch/sparc/include/asm/barrier_32.h
new file mode 100644
index 0000000..c1b7665
--- /dev/null
+++ b/arch/sparc/include/asm/barrier_32.h
@@ -0,0 +1,15 @@
+#ifndef __SPARC_BARRIER_H
+#define __SPARC_BARRIER_H
+
+/* XXX Change this if we ever use a PSO mode kernel. */
+#define mb() __asm__ __volatile__ ("" : : : "memory")
+#define rmb() mb()
+#define wmb() mb()
+#define read_barrier_depends() do { } while(0)
+#define set_mb(__var, __value) do { __var = __value; mb(); } while(0)
+#define smp_mb() __asm__ __volatile__("":::"memory")
+#define smp_rmb() __asm__ __volatile__("":::"memory")
+#define smp_wmb() __asm__ __volatile__("":::"memory")
+#define smp_read_barrier_depends() do { } while(0)
+
+#endif /* !(__SPARC_BARRIER_H) */
diff --git a/arch/sparc/include/asm/barrier_64.h b/arch/sparc/include/asm/barrier_64.h
new file mode 100644
index 0000000..95d4598
--- /dev/null
+++ b/arch/sparc/include/asm/barrier_64.h
@@ -0,0 +1,56 @@
+#ifndef __SPARC64_BARRIER_H
+#define __SPARC64_BARRIER_H
+
+/* These are here in an effort to more fully work around Spitfire Errata
+ * #51. Essentially, if a memory barrier occurs soon after a mispredicted
+ * branch, the chip can stop executing instructions until a trap occurs.
+ * Therefore, if interrupts are disabled, the chip can hang forever.
+ *
+ * It used to be believed that the memory barrier had to be right in the
+ * delay slot, but a case has been traced recently wherein the memory barrier
+ * was one instruction after the branch delay slot and the chip still hung.
+ * The offending sequence was the following in sym_wakeup_done() of the
+ * sym53c8xx_2 driver:
+ *
+ * call sym_ccb_from_dsa, 0
+ * movge %icc, 0, %l0
+ * brz,pn %o0, .LL1303
+ * mov %o0, %l2
+ * membar #LoadLoad
+ *
+ * The branch has to be mispredicted for the bug to occur. Therefore, we put
+ * the memory barrier explicitly into a "branch always, predicted taken"
+ * delay slot to avoid the problem case.
+ */
+#define membar_safe(type) \
+do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \
+ " membar " type "\n" \
+ "1:\n" \
+ : : : "memory"); \
+} while (0)
+
+/* The kernel always executes in TSO memory model these days,
+ * and furthermore most sparc64 chips implement more stringent
+ * memory ordering than required by the specifications.
+ */
+#define mb() membar_safe("#StoreLoad")
+#define rmb() __asm__ __volatile__("":::"memory")
+#define wmb() __asm__ __volatile__("":::"memory")
+
+#define read_barrier_depends() do { } while(0)
+#define set_mb(__var, __value) \
+ do { __var = __value; membar_safe("#StoreLoad"); } while(0)
+
+#ifdef CONFIG_SMP
+#define smp_mb() mb()
+#define smp_rmb() rmb()
+#define smp_wmb() wmb()
+#else
+#define smp_mb() __asm__ __volatile__("":::"memory")
+#define smp_rmb() __asm__ __volatile__("":::"memory")
+#define smp_wmb() __asm__ __volatile__("":::"memory")
+#endif
+
+#define smp_read_barrier_depends() do { } while(0)
+
+#endif /* !(__SPARC64_BARRIER_H) */
diff --git a/arch/sparc/include/asm/bug.h b/arch/sparc/include/asm/bug.h
index 8a59e5a..6bd9f43 100644
--- a/arch/sparc/include/asm/bug.h
+++ b/arch/sparc/include/asm/bug.h
@@ -19,4 +19,7 @@ extern void do_BUG(const char *file, int line);

#include <asm-generic/bug.h>

+struct pt_regs;
+extern void die_if_kernel(char *str, struct pt_regs *regs) __attribute__ ((noreturn));
+
#endif
diff --git a/arch/sparc/include/asm/cacheflush_32.h b/arch/sparc/include/asm/cacheflush_32.h
index 2e46877..68431b4 100644
--- a/arch/sparc/include/asm/cacheflush_32.h
+++ b/arch/sparc/include/asm/cacheflush_32.h
@@ -83,4 +83,13 @@ extern void sparc_flush_page_to_ram(struct page *page);
#define flush_cache_vmap(start, end) flush_cache_all()
#define flush_cache_vunmap(start, end) flush_cache_all()

+/* When a context switch happens we must flush all user windows so that
+ * the windows of the current process are flushed onto its stack. This
+ * way the windows are all clean for the next process and the stack
+ * frames are up to date.
+ */
+extern void flush_user_windows(void);
+extern void kill_user_windows(void);
+extern void flushw_all(void);
+
#endif /* _SPARC_CACHEFLUSH_H */
diff --git a/arch/sparc/include/asm/cacheflush_64.h b/arch/sparc/include/asm/cacheflush_64.h
index b953840..2efea2f 100644
--- a/arch/sparc/include/asm/cacheflush_64.h
+++ b/arch/sparc/include/asm/cacheflush_64.h
@@ -9,6 +9,16 @@

/* Cache flush operations. */

+
+#define flushi(addr) __asm__ __volatile__ ("flush %0" : : "r" (addr) : "memory")
+#define flushw_all() __asm__ __volatile__("flushw")
+
+extern void __flushw_user(void);
+#define flushw_user() __flushw_user()
+
+#define flush_user_windows flushw_user
+#define flush_register_windows flushw_all
+
/* These are the same regardless of whether this is an SMP kernel or not. */
#define flush_cache_mm(__mm) \
do { if ((__mm) == current->mm) flushw_user(); } while(0)
diff --git a/arch/sparc/include/asm/cpu_type.h b/arch/sparc/include/asm/cpu_type.h
new file mode 100644
index 0000000..4ca184d
--- /dev/null
+++ b/arch/sparc/include/asm/cpu_type.h
@@ -0,0 +1,34 @@
+#ifndef __ASM_CPU_TYPE_H
+#define __ASM_CPU_TYPE_H
+
+/*
+ * Sparc (general) CPU types
+ */
+enum sparc_cpu {
+ sun4 = 0x00,
+ sun4c = 0x01,
+ sun4m = 0x02,
+ sun4d = 0x03,
+ sun4e = 0x04,
+ sun4u = 0x05, /* V8 ploos ploos */
+ sun_unknown = 0x06,
+ ap1000 = 0x07, /* almost a sun4m */
+ sparc_leon = 0x08, /* Leon SoC */
+};
+
+#ifdef CONFIG_SPARC32
+extern enum sparc_cpu sparc_cpu_model;
+
+#define ARCH_SUN4C (sparc_cpu_model==sun4c)
+
+#define SUN4M_NCPUS 4 /* Architectural limit of sun4m. */
+
+#else
+
+#define sparc_cpu_model sun4u
+
+/* This cannot ever be a sun4c :) That's just history. */
+#define ARCH_SUN4C 0
+#endif
+
+#endif /* __ASM_CPU_TYPE_H */
diff --git a/arch/sparc/include/asm/exec.h b/arch/sparc/include/asm/exec.h
new file mode 100644
index 0000000..2e08588
--- /dev/null
+++ b/arch/sparc/include/asm/exec.h
@@ -0,0 +1,6 @@
+#ifndef __SPARC_EXEC_H
+#define __SPARC_EXEC_H
+
+#define arch_align_stack(x) (x)
+
+#endif /* __SPARC_EXEC_H */
diff --git a/arch/sparc/include/asm/irqflags_32.h b/arch/sparc/include/asm/irqflags_32.h
index 1484890..e414c06 100644
--- a/arch/sparc/include/asm/irqflags_32.h
+++ b/arch/sparc/include/asm/irqflags_32.h
@@ -13,6 +13,7 @@
#ifndef __ASSEMBLY__

#include <linux/types.h>
+#include <asm/psr.h>

extern void arch_local_irq_restore(unsigned long);
extern unsigned long arch_local_irq_save(void);
diff --git a/arch/sparc/include/asm/perfctr.h b/arch/sparc/include/asm/perfctr.h
index 8d8720a..3332d2c 100644
--- a/arch/sparc/include/asm/perfctr.h
+++ b/arch/sparc/include/asm/perfctr.h
@@ -168,6 +168,29 @@ struct vcounter_struct {
unsigned long long vcnt1;
};

+#else /* !(__KERNEL__) */
+
+#ifndef CONFIG_SPARC32
+
+/* Performance counter register access. */
+#define read_pcr(__p) __asm__ __volatile__("rd %%pcr, %0" : "=r" (__p))
+#define write_pcr(__p) __asm__ __volatile__("wr %0, 0x0, %%pcr" : : "r" (__p))
+#define read_pic(__p) __asm__ __volatile__("rd %%pic, %0" : "=r" (__p))
+
+/* Blackbird errata workaround. See commentary in
+ * arch/sparc64/kernel/smp.c:smp_percpu_timer_interrupt()
+ * for more information.
+ */
+#define write_pic(__p) \
+ __asm__ __volatile__("ba,pt %%xcc, 99f\n\t" \
+ " nop\n\t" \
+ ".align 64\n" \
+ "99:wr %0, 0x0, %%pic\n\t" \
+ "rd %%pic, %%g0" : : "r" (__p))
+#define reset_pic() write_pic(0)
+
+#endif /* !CONFIG_SPARC32 */
+
#endif /* !(__KERNEL__) */

#endif /* !(PERF_COUNTER_API) */
diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h
index 496664b..3d71018 100644
--- a/arch/sparc/include/asm/pgtable_32.h
+++ b/arch/sparc/include/asm/pgtable_32.h
@@ -21,6 +21,7 @@
#include <asm/vac-ops.h>
#include <asm/oplib.h>
#include <asm/btfixup.h>
+#include <asm/cpu_type.h>


struct vm_area_struct;
diff --git a/arch/sparc/include/asm/processor.h b/arch/sparc/include/asm/processor.h
index 9da9646..2fe99e6 100644
--- a/arch/sparc/include/asm/processor.h
+++ b/arch/sparc/include/asm/processor.h
@@ -5,4 +5,7 @@
#else
#include <asm/processor_32.h>
#endif
+
+#define nop() __asm__ __volatile__ ("nop")
+
#endif
diff --git a/arch/sparc/include/asm/processor_64.h b/arch/sparc/include/asm/processor_64.h
index 59fcebb..e713db2 100644
--- a/arch/sparc/include/asm/processor_64.h
+++ b/arch/sparc/include/asm/processor_64.h
@@ -18,6 +18,9 @@
#include <asm/ptrace.h>
#include <asm/page.h>

+/* Don't hold the runqueue lock over context switch */
+#define __ARCH_WANT_UNLOCKED_CTXSW
+
/* The sparc has no problems with write protection */
#define wp_works_ok 1
#define wp_works_ok__is_a_macro /* for versions in ksyms.c */
diff --git a/arch/sparc/include/asm/ptrace.h b/arch/sparc/include/asm/ptrace.h
index 0495388..afba9f2 100644
--- a/arch/sparc/include/asm/ptrace.h
+++ b/arch/sparc/include/asm/ptrace.h
@@ -98,6 +98,8 @@ struct sparc_trapf {
*/
#ifndef __ASSEMBLY__

+#include <linux/types.h>
+
struct pt_regs {
unsigned long psr;
unsigned long pc;
diff --git a/arch/sparc/include/asm/setup.h b/arch/sparc/include/asm/setup.h
index 64718ba..00497ab 100644
--- a/arch/sparc/include/asm/setup.h
+++ b/arch/sparc/include/asm/setup.h
@@ -13,14 +13,30 @@

#ifdef __KERNEL__

+extern char reboot_command[];
+
#ifdef CONFIG_SPARC32
/* The CPU that was used for booting
* Only sun4d + leon may have boot_cpu_id != 0
*/
extern unsigned char boot_cpu_id;
extern unsigned char boot_cpu_id4;
+
+extern unsigned long empty_bad_page;
+extern unsigned long empty_bad_page_table;
+extern unsigned long empty_zero_page;
+
+extern int serial_console;
+static inline int con_is_present(void)
+{
+ return serial_console ? 0 : 1;
+}
#endif

+extern void sun_do_break(void);
+extern int stop_a_enabled;
+extern int scons_pwroff;
+
#endif /* __KERNEL__ */

#endif /* _SPARC_SETUP_H */
diff --git a/arch/sparc/include/asm/switch_to.h b/arch/sparc/include/asm/switch_to.h
new file mode 100644
index 0000000..2dc4fa5
--- /dev/null
+++ b/arch/sparc/include/asm/switch_to.h
@@ -0,0 +1,8 @@
+#ifndef ___ASM_SPARC_SWITCH_TO_H
+#define ___ASM_SPARC_SWITCH_TO_H
+#if defined(__sparc__) && defined(__arch64__)
+#include <asm/switch_to_64.h>
+#else
+#include <asm/switch_to_32.h>
+#endif
+#endif
diff --git a/arch/sparc/include/asm/switch_to_32.h b/arch/sparc/include/asm/switch_to_32.h
new file mode 100644
index 0000000..e32e82b
--- /dev/null
+++ b/arch/sparc/include/asm/switch_to_32.h
@@ -0,0 +1,106 @@
+#ifndef __SPARC_SWITCH_TO_H
+#define __SPARC_SWITCH_TO_H
+
+#include <asm/smp.h>
+
+extern struct thread_info *current_set[NR_CPUS];
+
+/*
+ * Flush windows so that the VM switch which follows
+ * would not pull the stack from under us.
+ *
+ * SWITCH_ENTER and SWITH_DO_LAZY_FPU do not work yet (e.g. SMP does not work)
+ * XXX WTF is the above comment? Found in late teen 2.4.x.
+ */
+#ifdef CONFIG_SMP
+#define SWITCH_ENTER(prv) \
+ do { \
+ if (test_tsk_thread_flag(prv, TIF_USEDFPU)) { \
+ put_psr(get_psr() | PSR_EF); \
+ fpsave(&(prv)->thread.float_regs[0], &(prv)->thread.fsr, \
+ &(prv)->thread.fpqueue[0], &(prv)->thread.fpqdepth); \
+ clear_tsk_thread_flag(prv, TIF_USEDFPU); \
+ (prv)->thread.kregs->psr &= ~PSR_EF; \
+ } \
+ } while(0)
+
+#define SWITCH_DO_LAZY_FPU(next) /* */
+#else
+#define SWITCH_ENTER(prv) /* */
+#define SWITCH_DO_LAZY_FPU(nxt) \
+ do { \
+ if (last_task_used_math != (nxt)) \
+ (nxt)->thread.kregs->psr&=~PSR_EF; \
+ } while(0)
+#endif
+
+#define prepare_arch_switch(next) do { \
+ __asm__ __volatile__( \
+ ".globl\tflush_patch_switch\nflush_patch_switch:\n\t" \
+ "save %sp, -0x40, %sp; save %sp, -0x40, %sp; save %sp, -0x40, %sp\n\t" \
+ "save %sp, -0x40, %sp; save %sp, -0x40, %sp; save %sp, -0x40, %sp\n\t" \
+ "save %sp, -0x40, %sp\n\t" \
+ "restore; restore; restore; restore; restore; restore; restore"); \
+} while(0)
+
+ /* Much care has gone into this code, do not touch it.
+ *
+ * We need to loadup regs l0/l1 for the newly forked child
+ * case because the trap return path relies on those registers
+ * holding certain values, gcc is told that they are clobbered.
+ * Gcc needs registers for 3 values in and 1 value out, so we
+ * clobber every non-fixed-usage register besides l2/l3/o4/o5. -DaveM
+ *
+ * Hey Dave, that do not touch sign is too much of an incentive
+ * - Anton & Pete
+ */
+#define switch_to(prev, next, last) do { \
+ SWITCH_ENTER(prev); \
+ SWITCH_DO_LAZY_FPU(next); \
+ cpumask_set_cpu(smp_processor_id(), mm_cpumask(next->active_mm)); \
+ __asm__ __volatile__( \
+ "sethi %%hi(here - 0x8), %%o7\n\t" \
+ "mov %%g6, %%g3\n\t" \
+ "or %%o7, %%lo(here - 0x8), %%o7\n\t" \
+ "rd %%psr, %%g4\n\t" \
+ "std %%sp, [%%g6 + %4]\n\t" \
+ "rd %%wim, %%g5\n\t" \
+ "wr %%g4, 0x20, %%psr\n\t" \
+ "nop\n\t" \
+ "std %%g4, [%%g6 + %3]\n\t" \
+ "ldd [%2 + %3], %%g4\n\t" \
+ "mov %2, %%g6\n\t" \
+ ".globl patchme_store_new_current\n" \
+"patchme_store_new_current:\n\t" \
+ "st %2, [%1]\n\t" \
+ "wr %%g4, 0x20, %%psr\n\t" \
+ "nop\n\t" \
+ "nop\n\t" \
+ "nop\n\t" /* LEON needs all 3 nops: load to %sp depends on CWP. */ \
+ "ldd [%%g6 + %4], %%sp\n\t" \
+ "wr %%g5, 0x0, %%wim\n\t" \
+ "ldd [%%sp + 0x00], %%l0\n\t" \
+ "ldd [%%sp + 0x38], %%i6\n\t" \
+ "wr %%g4, 0x0, %%psr\n\t" \
+ "nop\n\t" \
+ "nop\n\t" \
+ "jmpl %%o7 + 0x8, %%g0\n\t" \
+ " ld [%%g3 + %5], %0\n\t" \
+ "here:\n" \
+ : "=&r" (last) \
+ : "r" (&(current_set[hard_smp_processor_id()])), \
+ "r" (task_thread_info(next)), \
+ "i" (TI_KPSR), \
+ "i" (TI_KSP), \
+ "i" (TI_TASK) \
+ : "g1", "g2", "g3", "g4", "g5", "g7", \
+ "l0", "l1", "l3", "l4", "l5", "l6", "l7", \
+ "i0", "i1", "i2", "i3", "i4", "i5", \
+ "o0", "o1", "o2", "o3", "o7"); \
+ } while(0)
+
+extern void fpsave(unsigned long *fpregs, unsigned long *fsr,
+ void *fpqueue, unsigned long *fpqdepth);
+extern void synchronize_user_stack(void);
+
+#endif /* __SPARC_SWITCH_TO_H */
diff --git a/arch/sparc/include/asm/switch_to_64.h b/arch/sparc/include/asm/switch_to_64.h
new file mode 100644
index 0000000..eb5121b
--- /dev/null
+++ b/arch/sparc/include/asm/switch_to_64.h
@@ -0,0 +1,73 @@
+#ifndef __SPARC64_SWITCH_TO_64_H
+#define __SPARC64_SWITCH_TO_64_H
+
+#include <asm/visasm.h>
+#include <asm/cacheflush.h>
+
+#define prepare_arch_switch(next) \
+do { \
+ flushw_all(); \
+} while (0)
+
+ /* See what happens when you design the chip correctly?
+ *
+ * We tell gcc we clobber all non-fixed-usage registers except
+ * for l0/l1. It will use one for 'next' and the other to hold
+ * the output value of 'last'. 'next' is not referenced again
+ * past the invocation of switch_to in the scheduler, so we need
+ * not preserve it's value. Hairy, but it lets us remove 2 loads
+ * and 2 stores in this critical code path. -DaveM
+ */
+#define switch_to(prev, next, last) \
+do { flush_tlb_pending(); \
+ save_and_clear_fpu(); \
+ /* If you are tempted to conditionalize the following */ \
+ /* so that ASI is only written if it changes, think again. */ \
+ __asm__ __volatile__("wr %%g0, %0, %%asi" \
+ : : "r" (__thread_flag_byte_ptr(task_thread_info(next))[TI_FLAG_BYTE_CURRENT_DS]));\
+ trap_block[current_thread_info()->cpu].thread = \
+ task_thread_info(next); \
+ __asm__ __volatile__( \
+ "mov %%g4, %%g7\n\t" \
+ "stx %%i6, [%%sp + 2047 + 0x70]\n\t" \
+ "stx %%i7, [%%sp + 2047 + 0x78]\n\t" \
+ "rdpr %%wstate, %%o5\n\t" \
+ "stx %%o6, [%%g6 + %6]\n\t" \
+ "stb %%o5, [%%g6 + %5]\n\t" \
+ "rdpr %%cwp, %%o5\n\t" \
+ "stb %%o5, [%%g6 + %8]\n\t" \
+ "wrpr %%g0, 15, %%pil\n\t" \
+ "mov %4, %%g6\n\t" \
+ "ldub [%4 + %8], %%g1\n\t" \
+ "wrpr %%g1, %%cwp\n\t" \
+ "ldx [%%g6 + %6], %%o6\n\t" \
+ "ldub [%%g6 + %5], %%o5\n\t" \
+ "ldub [%%g6 + %7], %%o7\n\t" \
+ "wrpr %%o5, 0x0, %%wstate\n\t" \
+ "ldx [%%sp + 2047 + 0x70], %%i6\n\t" \
+ "ldx [%%sp + 2047 + 0x78], %%i7\n\t" \
+ "ldx [%%g6 + %9], %%g4\n\t" \
+ "wrpr %%g0, 14, %%pil\n\t" \
+ "brz,pt %%o7, switch_to_pc\n\t" \
+ " mov %%g7, %0\n\t" \
+ "sethi %%hi(ret_from_syscall), %%g1\n\t" \
+ "jmpl %%g1 + %%lo(ret_from_syscall), %%g0\n\t" \
+ " nop\n\t" \
+ ".globl switch_to_pc\n\t" \
+ "switch_to_pc:\n\t" \
+ : "=&r" (last), "=r" (current), "=r" (current_thread_info_reg), \
+ "=r" (__local_per_cpu_offset) \
+ : "0" (task_thread_info(next)), \
+ "i" (TI_WSTATE), "i" (TI_KSP), "i" (TI_NEW_CHILD), \
+ "i" (TI_CWP), "i" (TI_TASK) \
+ : "cc", \
+ "g1", "g2", "g3", "g7", \
+ "l1", "l2", "l3", "l4", "l5", "l6", "l7", \
+ "i0", "i1", "i2", "i3", "i4", "i5", \
+ "o0", "o1", "o2", "o3", "o4", "o5", "o7"); \
+} while(0)
+
+extern void synchronize_user_stack(void);
+extern void fault_in_user_windows(void);
+
+#endif /* __SPARC64_SWITCH_TO_64_H */
diff --git a/arch/sparc/include/asm/system.h b/arch/sparc/include/asm/system.h
deleted file mode 100644
index 7944a7c..0000000
--- a/arch/sparc/include/asm/system.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef ___ASM_SPARC_SYSTEM_H
-#define ___ASM_SPARC_SYSTEM_H
-#if defined(__sparc__) && defined(__arch64__)
-#include <asm/system_64.h>
-#else
-#include <asm/system_32.h>
-#endif
-#endif
diff --git a/arch/sparc/include/asm/system_32.h b/arch/sparc/include/asm/system_32.h
deleted file mode 100644
index aba1609..0000000
--- a/arch/sparc/include/asm/system_32.h
+++ /dev/null
@@ -1,284 +0,0 @@
-#ifndef __SPARC_SYSTEM_H
-#define __SPARC_SYSTEM_H
-
-#include <linux/kernel.h>
-#include <linux/threads.h> /* NR_CPUS */
-#include <linux/thread_info.h>
-
-#include <asm/page.h>
-#include <asm/psr.h>
-#include <asm/ptrace.h>
-#include <asm/btfixup.h>
-#include <asm/smp.h>
-
-#ifndef __ASSEMBLY__
-
-#include <linux/irqflags.h>
-
-/*
- * Sparc (general) CPU types
- */
-enum sparc_cpu {
- sun4 = 0x00,
- sun4c = 0x01,
- sun4m = 0x02,
- sun4d = 0x03,
- sun4e = 0x04,
- sun4u = 0x05, /* V8 ploos ploos */
- sun_unknown = 0x06,
- ap1000 = 0x07, /* almost a sun4m */
- sparc_leon = 0x08, /* Leon SoC */
-};
-
-/* Really, userland should not be looking at any of this... */
-#ifdef __KERNEL__
-
-extern enum sparc_cpu sparc_cpu_model;
-
-#define ARCH_SUN4C (sparc_cpu_model==sun4c)
-
-#define SUN4M_NCPUS 4 /* Architectural limit of sun4m. */
-
-extern char reboot_command[];
-
-extern struct thread_info *current_set[NR_CPUS];
-
-extern unsigned long empty_bad_page;
-extern unsigned long empty_bad_page_table;
-extern unsigned long empty_zero_page;
-
-extern void sun_do_break(void);
-extern int serial_console;
-extern int stop_a_enabled;
-extern int scons_pwroff;
-
-static inline int con_is_present(void)
-{
- return serial_console ? 0 : 1;
-}
-
-/* When a context switch happens we must flush all user windows so that
- * the windows of the current process are flushed onto its stack. This
- * way the windows are all clean for the next process and the stack
- * frames are up to date.
- */
-extern void flush_user_windows(void);
-extern void kill_user_windows(void);
-extern void synchronize_user_stack(void);
-extern void fpsave(unsigned long *fpregs, unsigned long *fsr,
- void *fpqueue, unsigned long *fpqdepth);
-
-#ifdef CONFIG_SMP
-#define SWITCH_ENTER(prv) \
- do { \
- if (test_tsk_thread_flag(prv, TIF_USEDFPU)) { \
- put_psr(get_psr() | PSR_EF); \
- fpsave(&(prv)->thread.float_regs[0], &(prv)->thread.fsr, \
- &(prv)->thread.fpqueue[0], &(prv)->thread.fpqdepth); \
- clear_tsk_thread_flag(prv, TIF_USEDFPU); \
- (prv)->thread.kregs->psr &= ~PSR_EF; \
- } \
- } while(0)
-
-#define SWITCH_DO_LAZY_FPU(next) /* */
-#else
-#define SWITCH_ENTER(prv) /* */
-#define SWITCH_DO_LAZY_FPU(nxt) \
- do { \
- if (last_task_used_math != (nxt)) \
- (nxt)->thread.kregs->psr&=~PSR_EF; \
- } while(0)
-#endif
-
-extern void flushw_all(void);
-
-/*
- * Flush windows so that the VM switch which follows
- * would not pull the stack from under us.
- *
- * SWITCH_ENTER and SWITH_DO_LAZY_FPU do not work yet (e.g. SMP does not work)
- * XXX WTF is the above comment? Found in late teen 2.4.x.
- */
-#define prepare_arch_switch(next) do { \
- __asm__ __volatile__( \
- ".globl\tflush_patch_switch\nflush_patch_switch:\n\t" \
- "save %sp, -0x40, %sp; save %sp, -0x40, %sp; save %sp, -0x40, %sp\n\t" \
- "save %sp, -0x40, %sp; save %sp, -0x40, %sp; save %sp, -0x40, %sp\n\t" \
- "save %sp, -0x40, %sp\n\t" \
- "restore; restore; restore; restore; restore; restore; restore"); \
-} while(0)
-
- /* Much care has gone into this code, do not touch it.
- *
- * We need to loadup regs l0/l1 for the newly forked child
- * case because the trap return path relies on those registers
- * holding certain values, gcc is told that they are clobbered.
- * Gcc needs registers for 3 values in and 1 value out, so we
- * clobber every non-fixed-usage register besides l2/l3/o4/o5. -DaveM
- *
- * Hey Dave, that do not touch sign is too much of an incentive
- * - Anton & Pete
- */
-#define switch_to(prev, next, last) do { \
- SWITCH_ENTER(prev); \
- SWITCH_DO_LAZY_FPU(next); \
- cpumask_set_cpu(smp_processor_id(), mm_cpumask(next->active_mm)); \
- __asm__ __volatile__( \
- "sethi %%hi(here - 0x8), %%o7\n\t" \
- "mov %%g6, %%g3\n\t" \
- "or %%o7, %%lo(here - 0x8), %%o7\n\t" \
- "rd %%psr, %%g4\n\t" \
- "std %%sp, [%%g6 + %4]\n\t" \
- "rd %%wim, %%g5\n\t" \
- "wr %%g4, 0x20, %%psr\n\t" \
- "nop\n\t" \
- "std %%g4, [%%g6 + %3]\n\t" \
- "ldd [%2 + %3], %%g4\n\t" \
- "mov %2, %%g6\n\t" \
- ".globl patchme_store_new_current\n" \
-"patchme_store_new_current:\n\t" \
- "st %2, [%1]\n\t" \
- "wr %%g4, 0x20, %%psr\n\t" \
- "nop\n\t" \
- "nop\n\t" \
- "nop\n\t" /* LEON needs all 3 nops: load to %sp depends on CWP. */ \
- "ldd [%%g6 + %4], %%sp\n\t" \
- "wr %%g5, 0x0, %%wim\n\t" \
- "ldd [%%sp + 0x00], %%l0\n\t" \
- "ldd [%%sp + 0x38], %%i6\n\t" \
- "wr %%g4, 0x0, %%psr\n\t" \
- "nop\n\t" \
- "nop\n\t" \
- "jmpl %%o7 + 0x8, %%g0\n\t" \
- " ld [%%g3 + %5], %0\n\t" \
- "here:\n" \
- : "=&r" (last) \
- : "r" (&(current_set[hard_smp_processor_id()])), \
- "r" (task_thread_info(next)), \
- "i" (TI_KPSR), \
- "i" (TI_KSP), \
- "i" (TI_TASK) \
- : "g1", "g2", "g3", "g4", "g5", "g7", \
- "l0", "l1", "l3", "l4", "l5", "l6", "l7", \
- "i0", "i1", "i2", "i3", "i4", "i5", \
- "o0", "o1", "o2", "o3", "o7"); \
- } while(0)
-
-/* XXX Change this if we ever use a PSO mode kernel. */
-#define mb() __asm__ __volatile__ ("" : : : "memory")
-#define rmb() mb()
-#define wmb() mb()
-#define read_barrier_depends() do { } while(0)
-#define set_mb(__var, __value) do { __var = __value; mb(); } while(0)
-#define smp_mb() __asm__ __volatile__("":::"memory")
-#define smp_rmb() __asm__ __volatile__("":::"memory")
-#define smp_wmb() __asm__ __volatile__("":::"memory")
-#define smp_read_barrier_depends() do { } while(0)
-
-#define nop() __asm__ __volatile__ ("nop")
-
-/* This has special calling conventions */
-#ifndef CONFIG_SMP
-BTFIXUPDEF_CALL(void, ___xchg32, void)
-#endif
-
-static inline unsigned long xchg_u32(__volatile__ unsigned long *m, unsigned long val)
-{
-#ifdef CONFIG_SMP
- __asm__ __volatile__("swap [%2], %0"
- : "=&r" (val)
- : "0" (val), "r" (m)
- : "memory");
- return val;
-#else
- register unsigned long *ptr asm("g1");
- register unsigned long ret asm("g2");
-
- ptr = (unsigned long *) m;
- ret = val;
-
- /* Note: this is magic and the nop there is
- really needed. */
- __asm__ __volatile__(
- "mov %%o7, %%g4\n\t"
- "call ___f____xchg32\n\t"
- " nop\n\t"
- : "=&r" (ret)
- : "0" (ret), "r" (ptr)
- : "g3", "g4", "g7", "memory", "cc");
-
- return ret;
-#endif
-}
-
-#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(unsigned long x, __volatile__ void * ptr, int size)
-{
- switch (size) {
- case 4:
- return xchg_u32(ptr, x);
- }
- __xchg_called_with_bad_pointer();
- return x;
-}
-
-/* Emulate cmpxchg() the same way we emulate atomics,
- * by hashing the object address and indexing into an array
- * of spinlocks to get a bit of performance...
- *
- * See arch/sparc/lib/atomic32.c for implementation.
- *
- * Cribbed from <asm-parisc/atomic.h>
- */
-#define __HAVE_ARCH_CMPXCHG 1
-
-/* bug catcher for when unsupported size is used - won't link */
-extern void __cmpxchg_called_with_bad_pointer(void);
-/* we only need to support cmpxchg of a u32 on sparc */
-extern unsigned long __cmpxchg_u32(volatile u32 *m, u32 old, u32 new_);
-
-/* don't worry...optimizer will get rid of most of this */
-static inline unsigned long
-__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new_, int size)
-{
- switch (size) {
- case 4:
- return __cmpxchg_u32((u32 *)ptr, (u32)old, (u32)new_);
- default:
- __cmpxchg_called_with_bad_pointer();
- break;
- }
- 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))); \
-})
-
-#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))
-
-extern void die_if_kernel(char *str, struct pt_regs *regs) __attribute__ ((noreturn));
-
-#endif /* __KERNEL__ */
-
-#endif /* __ASSEMBLY__ */
-
-#define arch_align_stack(x) (x)
-
-#endif /* !(__SPARC_SYSTEM_H) */
diff --git a/arch/sparc/include/asm/system_64.h b/arch/sparc/include/asm/system_64.h
deleted file mode 100644
index 10bcabc..0000000
--- a/arch/sparc/include/asm/system_64.h
+++ /dev/null
@@ -1,331 +0,0 @@
-#ifndef __SPARC64_SYSTEM_H
-#define __SPARC64_SYSTEM_H
-
-#include <asm/ptrace.h>
-#include <asm/processor.h>
-#include <asm/visasm.h>
-
-#ifndef __ASSEMBLY__
-
-#include <linux/irqflags.h>
-#include <asm-generic/cmpxchg-local.h>
-
-/*
- * Sparc (general) CPU types
- */
-enum sparc_cpu {
- sun4 = 0x00,
- sun4c = 0x01,
- sun4m = 0x02,
- sun4d = 0x03,
- sun4e = 0x04,
- sun4u = 0x05, /* V8 ploos ploos */
- sun_unknown = 0x06,
- ap1000 = 0x07, /* almost a sun4m */
-};
-
-#define sparc_cpu_model sun4u
-
-/* This cannot ever be a sun4c :) That's just history. */
-#define ARCH_SUN4C 0
-
-extern char reboot_command[];
-
-/* These are here in an effort to more fully work around Spitfire Errata
- * #51. Essentially, if a memory barrier occurs soon after a mispredicted
- * branch, the chip can stop executing instructions until a trap occurs.
- * Therefore, if interrupts are disabled, the chip can hang forever.
- *
- * It used to be believed that the memory barrier had to be right in the
- * delay slot, but a case has been traced recently wherein the memory barrier
- * was one instruction after the branch delay slot and the chip still hung.
- * The offending sequence was the following in sym_wakeup_done() of the
- * sym53c8xx_2 driver:
- *
- * call sym_ccb_from_dsa, 0
- * movge %icc, 0, %l0
- * brz,pn %o0, .LL1303
- * mov %o0, %l2
- * membar #LoadLoad
- *
- * The branch has to be mispredicted for the bug to occur. Therefore, we put
- * the memory barrier explicitly into a "branch always, predicted taken"
- * delay slot to avoid the problem case.
- */
-#define membar_safe(type) \
-do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \
- " membar " type "\n" \
- "1:\n" \
- : : : "memory"); \
-} while (0)
-
-/* The kernel always executes in TSO memory model these days,
- * and furthermore most sparc64 chips implement more stringent
- * memory ordering than required by the specifications.
- */
-#define mb() membar_safe("#StoreLoad")
-#define rmb() __asm__ __volatile__("":::"memory")
-#define wmb() __asm__ __volatile__("":::"memory")
-
-#endif
-
-#define nop() __asm__ __volatile__ ("nop")
-
-#define read_barrier_depends() do { } while(0)
-#define set_mb(__var, __value) \
- do { __var = __value; membar_safe("#StoreLoad"); } while(0)
-
-#ifdef CONFIG_SMP
-#define smp_mb() mb()
-#define smp_rmb() rmb()
-#define smp_wmb() wmb()
-#else
-#define smp_mb() __asm__ __volatile__("":::"memory")
-#define smp_rmb() __asm__ __volatile__("":::"memory")
-#define smp_wmb() __asm__ __volatile__("":::"memory")
-#endif
-
-#define smp_read_barrier_depends() do { } while(0)
-
-#define flushi(addr) __asm__ __volatile__ ("flush %0" : : "r" (addr) : "memory")
-
-#define flushw_all() __asm__ __volatile__("flushw")
-
-/* Performance counter register access. */
-#define read_pcr(__p) __asm__ __volatile__("rd %%pcr, %0" : "=r" (__p))
-#define write_pcr(__p) __asm__ __volatile__("wr %0, 0x0, %%pcr" : : "r" (__p))
-#define read_pic(__p) __asm__ __volatile__("rd %%pic, %0" : "=r" (__p))
-
-/* Blackbird errata workaround. See commentary in
- * arch/sparc64/kernel/smp.c:smp_percpu_timer_interrupt()
- * for more information.
- */
-#define write_pic(__p) \
- __asm__ __volatile__("ba,pt %%xcc, 99f\n\t" \
- " nop\n\t" \
- ".align 64\n" \
- "99:wr %0, 0x0, %%pic\n\t" \
- "rd %%pic, %%g0" : : "r" (__p))
-#define reset_pic() write_pic(0)
-
-#ifndef __ASSEMBLY__
-
-extern void sun_do_break(void);
-extern int stop_a_enabled;
-extern int scons_pwroff;
-
-extern void fault_in_user_windows(void);
-extern void synchronize_user_stack(void);
-
-extern void __flushw_user(void);
-#define flushw_user() __flushw_user()
-
-#define flush_user_windows flushw_user
-#define flush_register_windows flushw_all
-
-/* Don't hold the runqueue lock over context switch */
-#define __ARCH_WANT_UNLOCKED_CTXSW
-#define prepare_arch_switch(next) \
-do { \
- flushw_all(); \
-} while (0)
-
- /* See what happens when you design the chip correctly?
- *
- * We tell gcc we clobber all non-fixed-usage registers except
- * for l0/l1. It will use one for 'next' and the other to hold
- * the output value of 'last'. 'next' is not referenced again
- * past the invocation of switch_to in the scheduler, so we need
- * not preserve it's value. Hairy, but it lets us remove 2 loads
- * and 2 stores in this critical code path. -DaveM
- */
-#define switch_to(prev, next, last) \
-do { flush_tlb_pending(); \
- save_and_clear_fpu(); \
- /* If you are tempted to conditionalize the following */ \
- /* so that ASI is only written if it changes, think again. */ \
- __asm__ __volatile__("wr %%g0, %0, %%asi" \
- : : "r" (__thread_flag_byte_ptr(task_thread_info(next))[TI_FLAG_BYTE_CURRENT_DS]));\
- trap_block[current_thread_info()->cpu].thread = \
- task_thread_info(next); \
- __asm__ __volatile__( \
- "mov %%g4, %%g7\n\t" \
- "stx %%i6, [%%sp + 2047 + 0x70]\n\t" \
- "stx %%i7, [%%sp + 2047 + 0x78]\n\t" \
- "rdpr %%wstate, %%o5\n\t" \
- "stx %%o6, [%%g6 + %6]\n\t" \
- "stb %%o5, [%%g6 + %5]\n\t" \
- "rdpr %%cwp, %%o5\n\t" \
- "stb %%o5, [%%g6 + %8]\n\t" \
- "wrpr %%g0, 15, %%pil\n\t" \
- "mov %4, %%g6\n\t" \
- "ldub [%4 + %8], %%g1\n\t" \
- "wrpr %%g1, %%cwp\n\t" \
- "ldx [%%g6 + %6], %%o6\n\t" \
- "ldub [%%g6 + %5], %%o5\n\t" \
- "ldub [%%g6 + %7], %%o7\n\t" \
- "wrpr %%o5, 0x0, %%wstate\n\t" \
- "ldx [%%sp + 2047 + 0x70], %%i6\n\t" \
- "ldx [%%sp + 2047 + 0x78], %%i7\n\t" \
- "ldx [%%g6 + %9], %%g4\n\t" \
- "wrpr %%g0, 14, %%pil\n\t" \
- "brz,pt %%o7, switch_to_pc\n\t" \
- " mov %%g7, %0\n\t" \
- "sethi %%hi(ret_from_syscall), %%g1\n\t" \
- "jmpl %%g1 + %%lo(ret_from_syscall), %%g0\n\t" \
- " nop\n\t" \
- ".globl switch_to_pc\n\t" \
- "switch_to_pc:\n\t" \
- : "=&r" (last), "=r" (current), "=r" (current_thread_info_reg), \
- "=r" (__local_per_cpu_offset) \
- : "0" (task_thread_info(next)), \
- "i" (TI_WSTATE), "i" (TI_KSP), "i" (TI_NEW_CHILD), \
- "i" (TI_CWP), "i" (TI_TASK) \
- : "cc", \
- "g1", "g2", "g3", "g7", \
- "l1", "l2", "l3", "l4", "l5", "l6", "l7", \
- "i0", "i1", "i2", "i3", "i4", "i5", \
- "o0", "o1", "o2", "o3", "o4", "o5", "o7"); \
-} while(0)
-
-static inline unsigned long xchg32(__volatile__ unsigned int *m, unsigned int val)
-{
- unsigned long tmp1, tmp2;
-
- __asm__ __volatile__(
-" mov %0, %1\n"
-"1: lduw [%4], %2\n"
-" cas [%4], %2, %0\n"
-" cmp %2, %0\n"
-" bne,a,pn %%icc, 1b\n"
-" mov %1, %0\n"
- : "=&r" (val), "=&r" (tmp1), "=&r" (tmp2)
- : "0" (val), "r" (m)
- : "cc", "memory");
- return val;
-}
-
-static inline unsigned long xchg64(__volatile__ unsigned long *m, unsigned long val)
-{
- unsigned long tmp1, tmp2;
-
- __asm__ __volatile__(
-" mov %0, %1\n"
-"1: ldx [%4], %2\n"
-" casx [%4], %2, %0\n"
-" cmp %2, %0\n"
-" bne,a,pn %%xcc, 1b\n"
-" mov %1, %0\n"
- : "=&r" (val), "=&r" (tmp1), "=&r" (tmp2)
- : "0" (val), "r" (m)
- : "cc", "memory");
- return val;
-}
-
-#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(unsigned long x, __volatile__ void * ptr,
- int size)
-{
- switch (size) {
- case 4:
- return xchg32(ptr, x);
- case 8:
- return xchg64(ptr, x);
- }
- __xchg_called_with_bad_pointer();
- return x;
-}
-
-extern void die_if_kernel(char *str, struct pt_regs *regs) __attribute__ ((noreturn));
-
-/*
- * 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.
- */
-
-#define __HAVE_ARCH_CMPXCHG 1
-
-static inline unsigned long
-__cmpxchg_u32(volatile int *m, int old, int new)
-{
- __asm__ __volatile__("cas [%2], %3, %0"
- : "=&r" (new)
- : "0" (new), "r" (m), "r" (old)
- : "memory");
-
- return new;
-}
-
-static inline unsigned long
-__cmpxchg_u64(volatile long *m, unsigned long old, unsigned long new)
-{
- __asm__ __volatile__("casx [%2], %3, %0"
- : "=&r" (new)
- : "0" (new), "r" (m), "r" (old)
- : "memory");
-
- return new;
-}
-
-/* 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,o,n) \
- ({ \
- __typeof__(*(ptr)) _o_ = (o); \
- __typeof__(*(ptr)) _n_ = (n); \
- (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_, \
- (unsigned long)_n_, sizeof(*(ptr))); \
- })
-
-/*
- * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
- * them available.
- */
-
-static inline unsigned long __cmpxchg_local(volatile void *ptr,
- unsigned long old,
- unsigned long new, int size)
-{
- switch (size) {
- case 4:
- case 8: return __cmpxchg(ptr, old, new, size);
- default:
- return __cmpxchg_local_generic(ptr, old, new, size);
- }
-
- return old;
-}
-
-#define cmpxchg_local(ptr, o, n) \
- ((__typeof__(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(o), \
- (unsigned long)(n), sizeof(*(ptr))))
-#define cmpxchg64_local(ptr, o, n) \
- ({ \
- BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
- cmpxchg_local((ptr), (o), (n)); \
- })
-
-#endif /* !(__ASSEMBLY__) */
-
-#define arch_align_stack(x) (x)
-
-#endif /* !(__SPARC64_SYSTEM_H) */
diff --git a/arch/sparc/include/asm/timer_32.h b/arch/sparc/include/asm/timer_32.h
index 2ec030e..1a91e11 100644
--- a/arch/sparc/include/asm/timer_32.h
+++ b/arch/sparc/include/asm/timer_32.h
@@ -8,12 +8,13 @@
#ifndef _SPARC_TIMER_H
#define _SPARC_TIMER_H

-#include <asm/system.h> /* For SUN4M_NCPUS */
+#include <asm/cpu_type.h> /* For SUN4M_NCPUS */
#include <asm/btfixup.h>

extern __volatile__ unsigned int *master_l10_counter;

/* FIXME: Make do_[gs]ettimeofday btfixup calls */
+struct timespec;
BTFIXUPDEF_CALL(int, bus_do_settimeofday, struct timespec *tv)
#define bus_do_settimeofday(tv) BTFIXUP_CALL(bus_do_settimeofday)(tv)

diff --git a/arch/sparc/kernel/auxio_32.c b/arch/sparc/kernel/auxio_32.c
index f7ea8f0..56d0f52 100644
--- a/arch/sparc/kernel/auxio_32.c
+++ b/arch/sparc/kernel/auxio_32.c
@@ -13,6 +13,7 @@
#include <asm/io.h>
#include <asm/auxio.h>
#include <asm/string.h> /* memset(), Linux has no bzero() */
+#include <asm/cpu_type.h>

/* Probe and map in the Auxiliary I/O register */

diff --git a/arch/sparc/kernel/devices.c b/arch/sparc/kernel/devices.c
index 876c9f6..6b2f56a 100644
--- a/arch/sparc/kernel/devices.c
+++ b/arch/sparc/kernel/devices.c
@@ -18,6 +18,7 @@
#include <asm/prom.h>
#include <asm/smp.h>
#include <asm/cpudata.h>
+#include <asm/cpu_type.h>

extern void clock_stop_probe(void); /* tadpole.c */
extern void sun4c_probe_memerr_reg(void);
diff --git a/arch/sparc/kernel/irq.h b/arch/sparc/kernel/irq.h
index 4285112..5a021dd 100644
--- a/arch/sparc/kernel/irq.h
+++ b/arch/sparc/kernel/irq.h
@@ -1,6 +1,7 @@
#include <linux/platform_device.h>

#include <asm/btfixup.h>
+#include <asm/cpu_type.h>

struct irq_bucket {
struct irq_bucket *next;
diff --git a/arch/sparc/kernel/kgdb_32.c b/arch/sparc/kernel/kgdb_32.c
index 539243b..2e424a5 100644
--- a/arch/sparc/kernel/kgdb_32.c
+++ b/arch/sparc/kernel/kgdb_32.c
@@ -9,6 +9,7 @@
#include <asm/kdebug.h>
#include <asm/ptrace.h>
#include <asm/irq.h>
+#include <asm/cacheflush.h>

extern unsigned long trapbase;

diff --git a/arch/sparc/kernel/module.c b/arch/sparc/kernel/module.c
index e551987..276359e 100644
--- a/arch/sparc/kernel/module.c
+++ b/arch/sparc/kernel/module.c
@@ -16,6 +16,7 @@

#include <asm/processor.h>
#include <asm/spitfire.h>
+#include <asm/cacheflush.h>

#include "entry.h"

diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c
index c76fe0b..eb1c1f0 100644
--- a/arch/sparc/kernel/nmi.c
+++ b/arch/sparc/kernel/nmi.c
@@ -22,6 +22,7 @@
#include <asm/perf_event.h>
#include <asm/ptrace.h>
#include <asm/pcr.h>
+#include <asm/perfctr.h>

#include "kstack.h"

diff --git a/arch/sparc/kernel/pcr.c b/arch/sparc/kernel/pcr.c
index a24072a..0ce0dd2 100644
--- a/arch/sparc/kernel/pcr.c
+++ b/arch/sparc/kernel/pcr.c
@@ -14,6 +14,7 @@
#include <asm/pcr.h>
#include <asm/nmi.h>
#include <asm/spitfire.h>
+#include <asm/perfctr.h>

/* This code is shared between various users of the performance
* counters. Users will be oprofile, pseudo-NMI watchdog, and the
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index 614da62..4361286 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -25,6 +25,8 @@
#include <linux/atomic.h>
#include <asm/nmi.h>
#include <asm/pcr.h>
+#include <asm/perfctr.h>
+#include <asm/cacheflush.h>

#include "kernel.h"
#include "kstack.h"
diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index a2050b3..8a91a0c 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -37,6 +37,7 @@
#include <asm/elf.h>
#include <asm/prom.h>
#include <asm/unistd.h>
+#include <asm/setup.h>

/*
* Power management idle function
diff --git a/arch/sparc/kernel/ptrace_32.c b/arch/sparc/kernel/ptrace_32.c
index 38af4a8..896ba7c 100644
--- a/arch/sparc/kernel/ptrace_32.c
+++ b/arch/sparc/kernel/ptrace_32.c
@@ -24,6 +24,7 @@

#include <asm/pgtable.h>
#include <asm/uaccess.h>
+#include <asm/cacheflush.h>

/* #define ALLOW_INIT_TRACING */

diff --git a/arch/sparc/kernel/reboot.c b/arch/sparc/kernel/reboot.c
index 5384d56..eba7d91 100644
--- a/arch/sparc/kernel/reboot.c
+++ b/arch/sparc/kernel/reboot.c
@@ -9,6 +9,7 @@

#include <asm/oplib.h>
#include <asm/prom.h>
+#include <asm/setup.h>

/* sysctl - toggle power-off restriction for serial console
* systems in machine_power_off()
diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c
index 010f719..d444468 100644
--- a/arch/sparc/kernel/setup_32.c
+++ b/arch/sparc/kernel/setup_32.c
@@ -45,6 +45,7 @@
#include <asm/machines.h>
#include <asm/cpudata.h>
#include <asm/setup.h>
+#include <asm/cacheflush.h>

#include "kernel.h"

diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
index 0a6b078..1414d16 100644
--- a/arch/sparc/kernel/setup_64.c
+++ b/arch/sparc/kernel/setup_64.c
@@ -48,6 +48,7 @@
#include <asm/btext.h>
#include <asm/elf.h>
#include <asm/mdesc.h>
+#include <asm/cacheflush.h>

#ifdef CONFIG_IP_PNP
#include <net/ipconfig.h>
diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c
index 023b886..df3e6c8 100644
--- a/arch/sparc/kernel/signal32.c
+++ b/arch/sparc/kernel/signal32.c
@@ -28,6 +28,7 @@
#include <asm/fpumacro.h>
#include <asm/visasm.h>
#include <asm/compat_signal.h>
+#include <asm/switch_to.h>

#include "sigutil.h"

diff --git a/arch/sparc/kernel/signal_32.c b/arch/sparc/kernel/signal_32.c
index d54c6e5..d260126 100644
--- a/arch/sparc/kernel/signal_32.c
+++ b/arch/sparc/kernel/signal_32.c
@@ -25,6 +25,7 @@
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
#include <asm/cacheflush.h> /* flush_sig_insns */
+#include <asm/switch_to.h>

#include "sigutil.h"

diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c
index f0836cd..4e50215 100644
--- a/arch/sparc/kernel/signal_64.c
+++ b/arch/sparc/kernel/signal_64.c
@@ -31,6 +31,8 @@
#include <asm/uctx.h>
#include <asm/siginfo.h>
#include <asm/visasm.h>
+#include <asm/switch_to.h>
+#include <asm/cacheflush.h>

#include "entry.h"
#include "systbls.h"
diff --git a/arch/sparc/kernel/sigutil_32.c b/arch/sparc/kernel/sigutil_32.c
index 35c7897..0f6eebe 100644
--- a/arch/sparc/kernel/sigutil_32.c
+++ b/arch/sparc/kernel/sigutil_32.c
@@ -7,6 +7,7 @@
#include <asm/sigcontext.h>
#include <asm/fpumacro.h>
#include <asm/ptrace.h>
+#include <asm/switch_to.h>

#include "sigutil.h"

diff --git a/arch/sparc/kernel/sigutil_64.c b/arch/sparc/kernel/sigutil_64.c
index b19570d..387834a 100644
--- a/arch/sparc/kernel/sigutil_64.c
+++ b/arch/sparc/kernel/sigutil_64.c
@@ -7,6 +7,7 @@
#include <asm/sigcontext.h>
#include <asm/fpumacro.h>
#include <asm/ptrace.h>
+#include <asm/switch_to.h>

#include "sigutil.h"

diff --git a/arch/sparc/kernel/sparc_ksyms_64.c b/arch/sparc/kernel/sparc_ksyms_64.c
index af39e3f..9f5e24d 100644
--- a/arch/sparc/kernel/sparc_ksyms_64.c
+++ b/arch/sparc/kernel/sparc_ksyms_64.c
@@ -15,6 +15,7 @@
#include <asm/spitfire.h>
#include <asm/oplib.h>
#include <asm/hypervisor.h>
+#include <asm/cacheflush.h>

struct poll {
int fd;
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
index bd3d285..c72fdf5 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c
@@ -40,6 +40,7 @@
#include <asm/head.h>
#include <asm/prom.h>
#include <asm/memctrl.h>
+#include <asm/cacheflush.h>

#include "entry.h"
#include "kstack.h"
diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c
index 622f653..dae85bc 100644
--- a/arch/sparc/kernel/unaligned_64.c
+++ b/arch/sparc/kernel/unaligned_64.c
@@ -23,6 +23,7 @@
#include <linux/ratelimit.h>
#include <linux/bitops.h>
#include <asm/fpumacro.h>
+#include <asm/cacheflush.h>

enum direction {
load, /* ld, ldd, ldh, ldsh */
diff --git a/arch/sparc/kernel/visemul.c b/arch/sparc/kernel/visemul.c
index 8573025..08e074b7 100644
--- a/arch/sparc/kernel/visemul.c
+++ b/arch/sparc/kernel/visemul.c
@@ -11,6 +11,7 @@
#include <asm/pstate.h>
#include <asm/fpumacro.h>
#include <asm/uaccess.h>
+#include <asm/cacheflush.h>

/* OPF field of various VIS instructions. */

diff --git a/arch/sparc/math-emu/math_64.c b/arch/sparc/math-emu/math_64.c
index e575bd2..2bbe2f2 100644
--- a/arch/sparc/math-emu/math_64.c
+++ b/arch/sparc/math-emu/math_64.c
@@ -16,6 +16,7 @@
#include <asm/fpumacro.h>
#include <asm/ptrace.h>
#include <asm/uaccess.h>
+#include <asm/cacheflush.h>

#include "sfp-util_64.h"
#include <math-emu/soft-fp.h>
diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c
index c0b7246..143fb50 100644
--- a/drivers/tty/serial/sunhv.c
+++ b/drivers/tty/serial/sunhv.c
@@ -23,6 +23,7 @@
#include <asm/spitfire.h>
#include <asm/prom.h>
#include <asm/irq.h>
+#include <asm/setup.h>

#if defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c
index b5fa2a5..3b63165 100644
--- a/drivers/tty/serial/sunsab.c
+++ b/drivers/tty/serial/sunsab.c
@@ -37,6 +37,7 @@
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/prom.h>
+#include <asm/setup.h>

#if defined(CONFIG_SERIAL_SUNSAB_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index ad0f8f5..c53d737 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -41,6 +41,7 @@
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/prom.h>
+#include <asm/setup.h>

#if defined(CONFIG_SERIAL_SUNSU_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
diff --git a/drivers/tty/serial/sunzilog.c b/drivers/tty/serial/sunzilog.c
index 8e916e7..f0ca0ac 100644
--- a/drivers/tty/serial/sunzilog.c
+++ b/drivers/tty/serial/sunzilog.c
@@ -37,6 +37,7 @@
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/prom.h>
+#include <asm/setup.h>

#if defined(CONFIG_SERIAL_SUNZILOG_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
diff --git a/kernel/signal.c b/kernel/signal.c
index c73c428..7e41ae3 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -36,6 +36,8 @@
#include <asm/uaccess.h>
#include <asm/unistd.h>
#include <asm/siginfo.h>
+#include <asm/switch_to.h>
+#include <asm/cacheflush.h>
#include "audit.h" /* audit_signal_info() */

/*
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 79f799c..e739679 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -67,6 +67,9 @@
#include <asm/stacktrace.h>
#include <asm/io.h>
#endif
+#ifdef CONFIG_SPARC
+#include <asm/setup.h>
+#endif
#ifdef CONFIG_BSD_PROCESS_ACCT
#include <linux/acct.h>
#endif


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