Disintegrate asm/system.h for Sparc
Disintegrate asm/system.h for Sparc.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: sparclinux@vger.kernel.org
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 @@
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) */