sparc64: Abstract away PIC register accesses.

And, like for the PCR, allow indexing of different PIC register
numbers.

This also removes all of the non-__KERNEL__ bits from asm/perfctr.h,
nothing kernel side should include it any more.

Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 4 insertions, 32 deletions

diff --git a/arch/sparc/include/asm/pcr.h b/arch/sparc/include/asm/pcr.h
index 55e23416eef..d53abf75198 100644
--- a/arch/sparc/include/asm/pcr.h
+++ b/arch/sparc/include/asm/pcr.h
@@ -2,8 +2,10 @@
 #define __PCR_H
 
 struct pcr_ops {
-        u64 (*read)(unsigned long);
-        void (*write)(unsigned long, u64);
+        u64 (*read_pcr)(unsigned long);
+        void (*write_pcr)(unsigned long, u64);
+        u64 (*read_pic)(unsigned long);
+        void (*write_pic)(unsigned long, u64);
 };
 extern const struct pcr_ops *pcr_ops;
 
diff --git a/arch/sparc/include/asm/perfctr.h b/arch/sparc/include/asm/perfctr.h
index 3332d2cba6c..214feefa577 100644
--- a/arch/sparc/include/asm/perfctr.h
+++ b/arch/sparc/include/asm/perfctr.h
@@ -54,11 +54,6 @@ enum perfctr_opcode {
         PERFCTR_GETPCR
 };
 
-/* I don't want the kernel's namespace to be polluted with this
- * stuff when this file is included.  --DaveM
- */
-#ifndef __KERNEL__
-
 #define  PRIV 0x00000001
 #define  SYS  0x00000002
 #define  USR  0x00000004
@@ -168,29 +163,4 @@ 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) */