Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

7 files changed, 47 insertions, 256 deletions

diff --git a/include/asm-sparc64/bitops.h b/include/asm-sparc64/bitops.h
index 9d722dc8cca3..9c5e71970287 100644
--- a/include/asm-sparc64/bitops.h
+++ b/include/asm-sparc64/bitops.h
@@ -20,52 +20,52 @@ extern void change_bit(unsigned long nr, volatile unsigned long *addr);
 
 /* "non-atomic" versions... */
 
-static __inline__ void __set_bit(int nr, volatile unsigned long *addr)
+static inline void __set_bit(int nr, volatile unsigned long *addr)
 {
-        volatile unsigned long *m = addr + (nr >> 6);
+        unsigned long *m = ((unsigned long *)addr) + (nr >> 6);
 
         *m |= (1UL << (nr & 63));
 }
 
-static __inline__ void __clear_bit(int nr, volatile unsigned long *addr)
+static inline void __clear_bit(int nr, volatile unsigned long *addr)
 {
-        volatile unsigned long *m = addr + (nr >> 6);
+        unsigned long *m = ((unsigned long *)addr) + (nr >> 6);
 
         *m &= ~(1UL << (nr & 63));
 }
 
-static __inline__ void __change_bit(int nr, volatile unsigned long *addr)
+static inline void __change_bit(int nr, volatile unsigned long *addr)
 {
-        volatile unsigned long *m = addr + (nr >> 6);
+        unsigned long *m = ((unsigned long *)addr) + (nr >> 6);
 
         *m ^= (1UL << (nr & 63));
 }
 
-static __inline__ int __test_and_set_bit(int nr, volatile unsigned long *addr)
+static inline int __test_and_set_bit(int nr, volatile unsigned long *addr)
 {
-        volatile unsigned long *m = addr + (nr >> 6);
-        long old = *m;
-        long mask = (1UL << (nr & 63));
+        unsigned long *m = ((unsigned long *)addr) + (nr >> 6);
+        unsigned long old = *m;
+        unsigned long mask = (1UL << (nr & 63));
 
         *m = (old | mask);
         return ((old & mask) != 0);
 }
 
-static __inline__ int __test_and_clear_bit(int nr, volatile unsigned long *addr)
+static inline int __test_and_clear_bit(int nr, volatile unsigned long *addr)
 {
-        volatile unsigned long *m = addr + (nr >> 6);
-        long old = *m;
-        long mask = (1UL << (nr & 63));
+        unsigned long *m = ((unsigned long *)addr) + (nr >> 6);
+        unsigned long old = *m;
+        unsigned long mask = (1UL << (nr & 63));
 
         *m = (old & ~mask);
         return ((old & mask) != 0);
 }
 
-static __inline__ int __test_and_change_bit(int nr, volatile unsigned long *addr)
+static inline int __test_and_change_bit(int nr, volatile unsigned long *addr)
 {
-        volatile unsigned long *m = addr + (nr >> 6);
-        long old = *m;
-        long mask = (1UL << (nr & 63));
+        unsigned long *m = ((unsigned long *)addr) + (nr >> 6);
+        unsigned long old = *m;
+        unsigned long mask = (1UL << (nr & 63));
 
         *m = (old ^ mask);
         return ((old & mask) != 0);
@@ -79,13 +79,13 @@ static __inline__ int __test_and_change_bit(int nr, volatile unsigned long *addr
 #define smp_mb__after_clear_bit()       barrier()
 #endif
 
-static __inline__ int test_bit(int nr, __const__ volatile unsigned long *addr)
+static inline int test_bit(int nr, __const__ volatile unsigned long *addr)
 {
-        return (1UL & ((addr)[nr >> 6] >> (nr & 63))) != 0UL;
+        return (1UL & (addr[nr >> 6] >> (nr & 63))) != 0UL;
 }
 
 /* The easy/cheese version for now. */
-static __inline__ unsigned long ffz(unsigned long word)
+static inline unsigned long ffz(unsigned long word)
 {
         unsigned long result;
 
@@ -103,7 +103,7 @@ static __inline__ unsigned long ffz(unsigned long word)
  *
  * Undefined if no bit exists, so code should check against 0 first.
  */
-static __inline__ unsigned long __ffs(unsigned long word)
+static inline unsigned long __ffs(unsigned long word)
 {
         unsigned long result = 0;
 
@@ -144,7 +144,7 @@ static inline int sched_find_first_bit(unsigned long *b)
  * the libc and compiler builtin ffs routines, therefore
  * differs in spirit from the above ffz (man ffs).
  */
-static __inline__ int ffs(int x)
+static inline int ffs(int x)
 {
         if (!x)
                 return 0;
@@ -158,7 +158,7 @@ static __inline__ int ffs(int x)
 
 #ifdef ULTRA_HAS_POPULATION_COUNT
 
-static __inline__ unsigned int hweight64(unsigned long w)
+static inline unsigned int hweight64(unsigned long w)
 {
         unsigned int res;
 
@@ -166,7 +166,7 @@ static __inline__ unsigned int hweight64(unsigned long w)
         return res;
 }
 
-static __inline__ unsigned int hweight32(unsigned int w)
+static inline unsigned int hweight32(unsigned int w)
 {
         unsigned int res;
 
@@ -174,7 +174,7 @@ static __inline__ unsigned int hweight32(unsigned int w)
         return res;
 }
 
-static __inline__ unsigned int hweight16(unsigned int w)
+static inline unsigned int hweight16(unsigned int w)
 {
         unsigned int res;
 
@@ -182,7 +182,7 @@ static __inline__ unsigned int hweight16(unsigned int w)
         return res;
 }
 
-static __inline__ unsigned int hweight8(unsigned int w)
+static inline unsigned int hweight8(unsigned int w)
 {
         unsigned int res;
 
@@ -236,7 +236,7 @@ extern unsigned long find_next_zero_bit(const unsigned long *,
 #define test_and_clear_le_bit(nr,addr)  \
         test_and_clear_bit((nr) ^ 0x38, (addr))
 
-static __inline__ int test_le_bit(int nr, __const__ unsigned long * addr)
+static inline int test_le_bit(int nr, __const__ unsigned long * addr)
 {
         int                     mask;
         __const__ unsigned char *ADDR = (__const__ unsigned char *) addr;
diff --git a/include/asm-sparc64/ptrace.h b/include/asm-sparc64/ptrace.h
index 2d2b5a113d24..6194f771e9fc 100644
--- a/include/asm-sparc64/ptrace.h
+++ b/include/asm-sparc64/ptrace.h
@@ -94,8 +94,9 @@ struct sparc_trapf {
 #define STACKFRAME32_SZ sizeof(struct sparc_stackf32)
 
 #ifdef __KERNEL__
-#define force_successful_syscall_return()       \
-        set_thread_flag(TIF_SYSCALL_SUCCESS)
+#define force_successful_syscall_return()           \
+do {    current_thread_info()->syscall_noerror = 1; \
+} while (0)
 #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
 #define instruction_pointer(regs) ((regs)->tpc)
 #ifdef CONFIG_SMP
diff --git a/include/asm-sparc64/rwsem.h b/include/asm-sparc64/rwsem.h
index a1cc94f95984..4568ee4022df 100644
--- a/include/asm-sparc64/rwsem.h
+++ b/include/asm-sparc64/rwsem.h
@@ -46,54 +46,14 @@ extern void __up_read(struct rw_semaphore *sem);
 extern void __up_write(struct rw_semaphore *sem);
 extern void __downgrade_write(struct rw_semaphore *sem);
 
-static __inline__ int rwsem_atomic_update(int delta, struct rw_semaphore *sem)
+static inline int rwsem_atomic_update(int delta, struct rw_semaphore *sem)
 {
-        int tmp = delta;
-
-        __asm__ __volatile__(
-                "1:\tlduw       [%2], %%g1\n\t"
-                "add            %%g1, %1, %%g7\n\t"
-                "cas            [%2], %%g1, %%g7\n\t"
-                "cmp            %%g1, %%g7\n\t"
-                "membar         #StoreLoad | #StoreStore\n\t"
-                "bne,pn         %%icc, 1b\n\t"
-                " nop\n\t"
-                "mov            %%g7, %0\n\t"
-                : "=&r" (tmp)
-                : "0" (tmp), "r" (sem)
-                : "g1", "g7", "memory", "cc");
-
-        return tmp + delta;
-}
-
-#define rwsem_atomic_add rwsem_atomic_update
-
-static __inline__ __u16 rwsem_cmpxchgw(struct rw_semaphore *sem, __u16 __old, __u16 __new)
-{
-        u32 old = (sem->count & 0xffff0000) | (u32) __old;
-        u32 new = (old & 0xffff0000) | (u32) __new;
-        u32 prev;
-
-again:
-        __asm__ __volatile__("cas       [%2], %3, %0\n\t"
-                             "membar    #StoreLoad | #StoreStore"
-                             : "=&r" (prev)
-                             : "0" (new), "r" (sem), "r" (old)
-                             : "memory");
-
-        /* To give the same semantics as x86 cmpxchgw, keep trying
-         * if only the upper 16-bits changed.
-         */
-        if (prev != old &&
-            ((prev & 0xffff) == (old & 0xffff)))
-                goto again;
-
-        return prev & 0xffff;
+        return atomic_add_return(delta, (atomic_t *)(&sem->count));
 }
 
-static __inline__ signed long rwsem_cmpxchg(struct rw_semaphore *sem, signed long old, signed long new)
+static inline void rwsem_atomic_add(int delta, struct rw_semaphore *sem)
 {
-        return cmpxchg(&sem->count,old,new);
+        atomic_add(delta, (atomic_t *)(&sem->count));
 }
 
 #endif /* __KERNEL__ */
diff --git a/include/asm-sparc64/spitfire.h b/include/asm-sparc64/spitfire.h
index 1aa932773af8..962638c9d122 100644
--- a/include/asm-sparc64/spitfire.h
+++ b/include/asm-sparc64/spitfire.h
@@ -56,52 +56,6 @@ extern void cheetah_enable_pcache(void);
          SPITFIRE_HIGHEST_LOCKED_TLBENT : \
          CHEETAH_HIGHEST_LOCKED_TLBENT)
 
-static __inline__ unsigned long spitfire_get_isfsr(void)
-{
-        unsigned long ret;
-
-        __asm__ __volatile__("ldxa      [%1] %2, %0"
-                             : "=r" (ret)
-                             : "r" (TLB_SFSR), "i" (ASI_IMMU));
-        return ret;
-}
-
-static __inline__ unsigned long spitfire_get_dsfsr(void)
-{
-        unsigned long ret;
-
-        __asm__ __volatile__("ldxa      [%1] %2, %0"
-                             : "=r" (ret)
-                             : "r" (TLB_SFSR), "i" (ASI_DMMU));
-        return ret;
-}
-
-static __inline__ unsigned long spitfire_get_sfar(void)
-{
-        unsigned long ret;
-
-        __asm__ __volatile__("ldxa      [%1] %2, %0"
-                             : "=r" (ret)
-                             : "r" (DMMU_SFAR), "i" (ASI_DMMU));
-        return ret;
-}
-
-static __inline__ void spitfire_put_isfsr(unsigned long sfsr)
-{
-        __asm__ __volatile__("stxa      %0, [%1] %2\n\t"
-                             "membar    #Sync"
-                             : /* no outputs */
-                             : "r" (sfsr), "r" (TLB_SFSR), "i" (ASI_IMMU));
-}
-
-static __inline__ void spitfire_put_dsfsr(unsigned long sfsr)
-{
-        __asm__ __volatile__("stxa      %0, [%1] %2\n\t"
-                             "membar    #Sync"
-                             : /* no outputs */
-                             : "r" (sfsr), "r" (TLB_SFSR), "i" (ASI_DMMU));
-}
-
 /* The data cache is write through, so this just invalidates the
  * specified line.
  */
@@ -193,90 +147,6 @@ static __inline__ void spitfire_put_itlb_data(int entry, unsigned long data)
                                "i" (ASI_ITLB_DATA_ACCESS));
 }
 
-/* Spitfire hardware assisted TLB flushes. */
-
-/* Context level flushes. */
-static __inline__ void spitfire_flush_dtlb_primary_context(void)
-{
-        __asm__ __volatile__("stxa      %%g0, [%0] %1\n\t"
-                             "membar    #Sync"
-                             : /* No outputs */
-                             : "r" (0x40), "i" (ASI_DMMU_DEMAP));
-}
-
-static __inline__ void spitfire_flush_itlb_primary_context(void)
-{
-        __asm__ __volatile__("stxa      %%g0, [%0] %1\n\t"
-                             "membar    #Sync"
-                             : /* No outputs */
-                             : "r" (0x40), "i" (ASI_IMMU_DEMAP));
-}
-
-static __inline__ void spitfire_flush_dtlb_secondary_context(void)
-{
-        __asm__ __volatile__("stxa      %%g0, [%0] %1\n\t"
-                             "membar    #Sync"
-                             : /* No outputs */
-                             : "r" (0x50), "i" (ASI_DMMU_DEMAP));
-}
-
-static __inline__ void spitfire_flush_itlb_secondary_context(void)
-{
-        __asm__ __volatile__("stxa      %%g0, [%0] %1\n\t"
-                             "membar    #Sync"
-                             : /* No outputs */
-                             : "r" (0x50), "i" (ASI_IMMU_DEMAP));
-}
-
-static __inline__ void spitfire_flush_dtlb_nucleus_context(void)
-{
-        __asm__ __volatile__("stxa      %%g0, [%0] %1\n\t"
-                             "membar    #Sync"
-                             : /* No outputs */
-                             : "r" (0x60), "i" (ASI_DMMU_DEMAP));
-}
-
-static __inline__ void spitfire_flush_itlb_nucleus_context(void)
-{
-        __asm__ __volatile__("stxa      %%g0, [%0] %1\n\t"
-                             "membar    #Sync"
-                             : /* No outputs */
-                             : "r" (0x60), "i" (ASI_IMMU_DEMAP));
-}
-
-/* Page level flushes. */
-static __inline__ void spitfire_flush_dtlb_primary_page(unsigned long page)
-{
-        __asm__ __volatile__("stxa      %%g0, [%0] %1\n\t"
-                             "membar    #Sync"
-                             : /* No outputs */
-                             : "r" (page), "i" (ASI_DMMU_DEMAP));
-}
-
-static __inline__ void spitfire_flush_itlb_primary_page(unsigned long page)
-{
-        __asm__ __volatile__("stxa      %%g0, [%0] %1\n\t"
-                             "membar    #Sync"
-                             : /* No outputs */
-                             : "r" (page), "i" (ASI_IMMU_DEMAP));
-}
-
-static __inline__ void spitfire_flush_dtlb_secondary_page(unsigned long page)
-{
-        __asm__ __volatile__("stxa      %%g0, [%0] %1\n\t"
-                             "membar    #Sync"
-                             : /* No outputs */
-                             : "r" (page | 0x10), "i" (ASI_DMMU_DEMAP));
-}
-
-static __inline__ void spitfire_flush_itlb_secondary_page(unsigned long page)
-{
-        __asm__ __volatile__("stxa      %%g0, [%0] %1\n\t"
-                             "membar    #Sync"
-                             : /* No outputs */
-                             : "r" (page | 0x10), "i" (ASI_IMMU_DEMAP));
-}
-
 static __inline__ void spitfire_flush_dtlb_nucleus_page(unsigned long page)
 {
         __asm__ __volatile__("stxa      %%g0, [%0] %1\n\t"
diff --git a/include/asm-sparc64/system.h b/include/asm-sparc64/system.h
index f9be2c5b4dc9..ee4bdfc6b88f 100644
--- a/include/asm-sparc64/system.h
+++ b/include/asm-sparc64/system.h
@@ -190,24 +190,23 @@ do {	if (test_thread_flag(TIF_PERFCTR)) {				\
         "wrpr   %%g1, %%cwp\n\t"                                        \
         "ldx    [%%g6 + %3], %%o6\n\t"                                  \
         "ldub   [%%g6 + %2], %%o5\n\t"                                  \
-        "ldx    [%%g6 + %4], %%o7\n\t"                                  \
+        "ldub   [%%g6 + %4], %%o7\n\t"                                  \
         "mov    %%g6, %%l2\n\t"                                         \
         "wrpr   %%o5, 0x0, %%wstate\n\t"                                \
         "ldx    [%%sp + 2047 + 0x70], %%i6\n\t"                         \
         "ldx    [%%sp + 2047 + 0x78], %%i7\n\t"                         \
         "wrpr   %%g0, 0x94, %%pstate\n\t"                               \
         "mov    %%l2, %%g6\n\t"                                         \
-        "ldx    [%%g6 + %7], %%g4\n\t"                                  \
+        "ldx    [%%g6 + %6], %%g4\n\t"                                  \
         "wrpr   %%g0, 0x96, %%pstate\n\t"                               \
-        "andcc  %%o7, %6, %%g0\n\t"                                     \
-        "beq,pt %%icc, 1f\n\t"                                          \
+        "brz,pt %%o7, 1f\n\t"                                           \
         " mov   %%g7, %0\n\t"                                           \
         "b,a ret_from_syscall\n\t"                                      \
         "1:\n\t"                                                        \
         : "=&r" (last)                                                  \
         : "0" (next->thread_info),                                      \
-          "i" (TI_WSTATE), "i" (TI_KSP), "i" (TI_FLAGS), "i" (TI_CWP),  \
-          "i" (_TIF_NEWCHILD), "i" (TI_TASK)                            \
+          "i" (TI_WSTATE), "i" (TI_KSP), "i" (TI_NEW_CHILD),            \
+          "i" (TI_CWP), "i" (TI_TASK)                                   \
         : "cc",                                                         \
                 "g1", "g2", "g3",                   "g7",               \
                       "l2", "l3", "l4", "l5", "l6", "l7",               \
diff --git a/include/asm-sparc64/thread_info.h b/include/asm-sparc64/thread_info.h
index a1d25c06f92a..352d9943661a 100644
--- a/include/asm-sparc64/thread_info.h
+++ b/include/asm-sparc64/thread_info.h
@@ -47,7 +47,9 @@ struct thread_info {
         struct pt_regs          *kregs;
         struct exec_domain      *exec_domain;
         int                     preempt_count;  /* 0 => preemptable, <0 => BUG */
-        int                     __pad;
+        __u8                    new_child;
+        __u8                    syscall_noerror;
+        __u16                   __pad;
 
         unsigned long           *utraps;
 
@@ -87,6 +89,8 @@ struct thread_info {
 #define TI_KREGS        0x00000028
 #define TI_EXEC_DOMAIN  0x00000030
 #define TI_PRE_COUNT    0x00000038
+#define TI_NEW_CHILD    0x0000003c
+#define TI_SYS_NOERROR  0x0000003d
 #define TI_UTRAPS       0x00000040
 #define TI_REG_WINDOW   0x00000048
 #define TI_RWIN_SPTRS   0x000003c8      
@@ -219,10 +223,10 @@ register struct thread_info *current_thread_info_reg asm("g6");
 #define TIF_UNALIGNED           5       /* allowed to do unaligned accesses */
 #define TIF_NEWSIGNALS          6       /* wants new-style signals */
 #define TIF_32BIT               7       /* 32-bit binary */
-#define TIF_NEWCHILD            8       /* just-spawned child process */
+/* flag bit 8 is available */
 #define TIF_SECCOMP             9       /* secure computing */
 #define TIF_SYSCALL_AUDIT       10      /* syscall auditing active */
-#define TIF_SYSCALL_SUCCESS     11
+/* flag bit 11 is available */
 /* NOTE: Thread flags >= 12 should be ones we have no interest
  *       in using in assembly, else we can't use the mask as
  *       an immediate value in instructions such as andcc.
@@ -239,10 +243,8 @@ register struct thread_info *current_thread_info_reg asm("g6");
 #define _TIF_UNALIGNED          (1<<TIF_UNALIGNED)
 #define _TIF_NEWSIGNALS         (1<<TIF_NEWSIGNALS)
 #define _TIF_32BIT              (1<<TIF_32BIT)
-#define _TIF_NEWCHILD           (1<<TIF_NEWCHILD)
 #define _TIF_SECCOMP            (1<<TIF_SECCOMP)
 #define _TIF_SYSCALL_AUDIT      (1<<TIF_SYSCALL_AUDIT)
-#define _TIF_SYSCALL_SUCCESS    (1<<TIF_SYSCALL_SUCCESS)
 #define _TIF_ABI_PENDING        (1<<TIF_ABI_PENDING)
 #define _TIF_POLLING_NRFLAG     (1<<TIF_POLLING_NRFLAG)
 
diff --git a/include/asm-sparc64/timer.h b/include/asm-sparc64/timer.h
index ba33a2b6b7bd..edc8e08c3a39 100644
--- a/include/asm-sparc64/timer.h
+++ b/include/asm-sparc64/timer.h
@@ -9,49 +9,8 @@
 
 #include <linux/types.h>
 
-/* How timers work:
- *
- * On uniprocessors we just use counter zero for the system wide
- * ticker, this performs thread scheduling, clock book keeping,
- * and runs timer based events.  Previously we used the Ultra
- * %tick interrupt for this purpose.
- *
- * On multiprocessors we pick one cpu as the master level 10 tick
- * processor.  Here this counter zero tick handles clock book
- * keeping and timer events only.  Each Ultra has it's level
- * 14 %tick interrupt set to fire off as well, even the master
- * tick cpu runs this locally.  This ticker performs thread
- * scheduling, system/user tick counting for the current thread,
- * and also profiling if enabled.
- */
-
 #include <linux/config.h>
 
-/* Two timers, traditionally steered to PIL's 10 and 14 respectively.
- * But since INO packets are used on sun5, we could use any PIL level
- * we like, however for now we use the normal ones.
- *
- * The 'reg' and 'interrupts' properties for these live in nodes named
- * 'counter-timer'.  The first of three 'reg' properties describe where
- * the sun5_timer registers are.  The other two I have no idea. (XXX)
- */
-struct sun5_timer {
-        u64     count0;
-        u64     limit0;
-        u64     count1;
-        u64     limit1;
-};
-
-#define SUN5_LIMIT_ENABLE       0x80000000
-#define SUN5_LIMIT_TOZERO       0x40000000
-#define SUN5_LIMIT_ZRESTART     0x20000000
-#define SUN5_LIMIT_CMASK        0x1fffffff
-
-/* Given a HZ value, set the limit register to so that the timer IRQ
- * gets delivered that often.
- */
-#define SUN5_HZ_TO_LIMIT(__hz)  (1000000/(__hz))
-
 struct sparc64_tick_ops {
         void (*init_tick)(unsigned long);
         unsigned long (*get_tick)(void);