ia64: use non-racy method for proc entries creation

[mv-sheeva.git] / arch / ia64 / sn / kernel / irq.c

diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
index 7f6d2360a2620f66f96487c4b37898f9a2dac13e..53351c3cd7b1ef071fb6ff53ccdfc219f135182d 100644 (file)
--- a/arch/ia64/sn/kernel/irq.c
+++ b/arch/ia64/sn/kernel/irq.c
@@ -5,7 +5,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (c) 2000-2006 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2007 Silicon Graphics, Inc.  All Rights Reserved.
  */
 
 #include <linux/irq.h>
@@ -19,6 +19,7 @@
 #include <asm/sn/pcidev.h>
 #include <asm/sn/shub_mmr.h>
 #include <asm/sn/sn_sal.h>
+#include <asm/sn/sn_feature_sets.h>
 
 static void force_interrupt(int irq);
 static void register_intr_pda(struct sn_irq_info *sn_irq_info);
@@ -84,12 +85,18 @@ static void sn_shutdown_irq(unsigned int irq)
 {
 }
 
+extern void ia64_mca_register_cpev(int);
+
 static void sn_disable_irq(unsigned int irq)
 {
+       if (irq == local_vector_to_irq(IA64_CPE_VECTOR))
+               ia64_mca_register_cpev(0);
 }
 
 static void sn_enable_irq(unsigned int irq)
 {
+       if (irq == local_vector_to_irq(IA64_CPE_VECTOR))
+               ia64_mca_register_cpev(irq);
 }
 
 static void sn_ack_irq(unsigned int irq)
@@ -233,6 +240,20 @@ static void sn_set_affinity_irq(unsigned int irq, cpumask_t mask)
                (void)sn_retarget_vector(sn_irq_info, nasid, slice);
 }
 
+#ifdef CONFIG_SMP
+void sn_set_err_irq_affinity(unsigned int irq)
+{
+        /*
+         * On systems which support CPU disabling (SHub2), all error interrupts
+         * are targetted at the boot CPU.
+         */
+        if (is_shub2() && sn_prom_feature_available(PRF_CPU_DISABLE_SUPPORT))
+                set_irq_affinity_info(irq, cpu_physical_id(0), 0);
+}
+#else
+void sn_set_err_irq_affinity(unsigned int irq) { }
+#endif
+
 static void
 sn_mask_irq(unsigned int irq)
 {
@@ -256,6 +277,13 @@ struct irq_chip irq_type_sn = {
        .set_affinity   = sn_set_affinity_irq
 };
 
+ia64_vector sn_irq_to_vector(int irq)
+{
+       if (irq >= IA64_NUM_VECTORS)
+               return 0;
+       return (ia64_vector)irq;
+}
+
 unsigned int sn_local_vector_to_irq(u8 vector)
 {
        return (CPU_VECTOR_TO_IRQ(smp_processor_id(), vector));
@@ -398,7 +426,10 @@ sn_call_force_intr_provider(struct sn_irq_info *sn_irq_info)
        struct sn_pcibus_provider *pci_provider;
 
        pci_provider = sn_pci_provider[sn_irq_info->irq_bridge_type];
-       if (pci_provider && pci_provider->force_interrupt)
+
+       /* Don't force an interrupt if the irq has been disabled */
+       if (!(irq_desc[sn_irq_info->irq_irq].status & IRQ_DISABLED) &&
+           pci_provider && pci_provider->force_interrupt)
                (*pci_provider->force_interrupt)(sn_irq_info);
 }