sparc64: Implement NMI watchdog on capable cpus.

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

1 files changed, 15 insertions, 2 deletions

diff --git a/arch/sparc/kernel/pcr.c b/arch/sparc/kernel/pcr.c
index c4f24703b165..92e0dda141a4 100644
--- a/arch/sparc/kernel/pcr.c
+++ b/arch/sparc/kernel/pcr.c
@@ -9,12 +9,22 @@
 
 #include <asm/pil.h>
 #include <asm/pcr.h>
+#include <asm/nmi.h>
 
 /* This code is shared between various users of the performance
  * counters.  Users will be oprofile, pseudo-NMI watchdog, and the
  * perf_counter support layer.
  */
 
+#define PCR_SUN4U_ENABLE        (PCR_PIC_PRIV | PCR_STRACE | PCR_UTRACE)
+#define PCR_N2_ENABLE           (PCR_PIC_PRIV | PCR_STRACE | PCR_UTRACE | \
+                                 PCR_N2_TOE_OV1 | \
+                                 (2 << PCR_N2_SL1_SHIFT) | \
+                                 (0xff << PCR_N2_MASK1_SHIFT))
+
+u64 pcr_enable;
+unsigned int picl_shift;
+
 /* Performance counter interrupts run unmasked at PIL level 15.
  * Therefore we can't do things like wakeups and other work
  * that expects IRQ disabling to be adhered to in locking etc.
@@ -117,12 +127,15 @@ int __init pcr_arch_init(void)
         switch (tlb_type) {
         case hypervisor:
                 pcr_ops = &n2_pcr_ops;
+                pcr_enable = PCR_N2_ENABLE;
+                picl_shift = 2;
                 break;
 
-        case spitfire:
         case cheetah:
         case cheetah_plus:
+        case spitfire:
                 pcr_ops = &direct_pcr_ops;
+                pcr_enable = PCR_SUN4U_ENABLE;
                 break;
 
         default:
@@ -130,7 +143,7 @@ int __init pcr_arch_init(void)
                 goto out_unregister;
         }
 
-        return 0;
+        return nmi_init();
 
 out_unregister:
         unregister_perf_hsvc();