Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/pasemi

1 files changed, 27 insertions, 3 deletions

diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c
index b5dfd4252110..1940e678878e 100644
--- a/arch/powerpc/platforms/pasemi/setup.c
+++ b/arch/powerpc/platforms/pasemi/setup.c
@@ -61,6 +61,7 @@ struct mce_regs {
 
 static struct mce_regs mce_regs[MAX_MCE_REGS];
 static int num_mce_regs;
+static int nmi_virq = NO_IRQ;
 
 
 static void pas_restart(char *cmd)
@@ -189,6 +190,8 @@ static __init void pas_init_IRQ(void)
         unsigned long openpic_addr;
         const unsigned int *opprop;
         int naddr, opplen;
+        int mpic_flags;
+        const unsigned int *nmiprop;
         struct mpic *mpic;
 
         mpic_node = NULL;
@@ -221,13 +224,26 @@ static __init void pas_init_IRQ(void)
         openpic_addr = of_read_number(opprop, naddr);
         printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr);
 
+        mpic_flags = MPIC_PRIMARY | MPIC_LARGE_VECTORS | MPIC_NO_BIAS;
+
+        nmiprop = of_get_property(mpic_node, "nmi-source", NULL);
+        if (nmiprop)
+                mpic_flags |= MPIC_ENABLE_MCK;
+
         mpic = mpic_alloc(mpic_node, openpic_addr,
-                          MPIC_PRIMARY|MPIC_LARGE_VECTORS,
-                          0, 0, "PASEMI-OPIC");
+                          mpic_flags, 0, 0, "PASEMI-OPIC");
         BUG_ON(!mpic);
 
         mpic_assign_isu(mpic, 0, openpic_addr + 0x10000);
         mpic_init(mpic);
+        /* The NMI/MCK source needs to be prio 15 */
+        if (nmiprop) {
+                nmi_virq = irq_create_mapping(NULL, *nmiprop);
+                mpic_irq_set_priority(nmi_virq, 15);
+                set_irq_type(nmi_virq, IRQ_TYPE_EDGE_RISING);
+                mpic_unmask_irq(nmi_virq);
+        }
+
         of_node_put(mpic_node);
         of_node_put(root);
 }
@@ -247,6 +263,14 @@ static int pas_machine_check_handler(struct pt_regs *regs)
 
         srr0 = regs->nip;
         srr1 = regs->msr;
+
+        if (mpic_get_mcirq() == nmi_virq) {
+                printk(KERN_ERR "NMI delivered\n");
+                debugger(regs);
+                mpic_end_irq(nmi_virq);
+                goto out;
+        }
+
         dsisr = mfspr(SPRN_DSISR);
         printk(KERN_ERR "Machine Check on CPU %d\n", cpu);
         printk(KERN_ERR "SRR0  0x%016lx SRR1 0x%016lx\n", srr0, srr1);
@@ -310,7 +334,7 @@ static int pas_machine_check_handler(struct pt_regs *regs)
                 }
         }
 
-
+out:
         /* SRR1[62] is from MSR[62] if recoverable, so pass that back */
         return !!(srr1 & 0x2);
 }