x86, x2apic: enable fault handling for intr-remapping

Impact: interface augmentation (not yet used)

Enable fault handling flow for intr-remapping aswell. Fault handling
code now shared by both dma-remapping and intr-remapping.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

2 files changed, 4 insertions, 5 deletions

diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index f28440784cf0..c7768330c11d 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -49,6 +49,7 @@ extern int dmar_dev_scope_init(void);
 
 /* Intel IOMMU detection */
 extern void detect_intel_iommu(void);
+extern int enable_drhd_fault_handling(void);
 
 
 extern int parse_ioapics_under_ir(void);
@@ -116,9 +117,6 @@ extern struct intel_iommu *map_ioapic_to_ir(int apic);
 #define intr_remapping_enabled          (0)
 #endif
 
-#ifdef CONFIG_DMAR
-extern const char *dmar_get_fault_reason(u8 fault_reason);
-
 /* Can't use the common MSI interrupt functions
  * since DMAR is not a pci device
  */
@@ -129,6 +127,7 @@ extern void dmar_msi_write(int irq, struct msi_msg *msg);
 extern int dmar_set_interrupt(struct intel_iommu *iommu);
 extern int arch_setup_dmar_msi(unsigned int irq);
 
+#ifdef CONFIG_DMAR
 extern int iommu_detected, no_iommu;
 extern struct list_head dmar_rmrr_units;
 struct dmar_rmrr_unit {
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index d2e3cbfba14f..a9563840644b 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -292,6 +292,8 @@ struct intel_iommu {
         spinlock_t      register_lock; /* protect register handling */
         int             seq_id; /* sequence id of the iommu */
         int             agaw; /* agaw of this iommu */
+        unsigned int    irq;
+        unsigned char   name[13];    /* Device Name */
 
 #ifdef CONFIG_DMAR
         unsigned long   *domain_ids; /* bitmap of domains */
@@ -299,8 +301,6 @@ struct intel_iommu {
         spinlock_t      lock; /* protect context, domain ids */
         struct root_entry *root_entry; /* virtual address */
 
-        unsigned int irq;
-        unsigned char name[7];    /* Device Name */
         struct iommu_flush flush;
 #endif
         struct q_inval  *qi;            /* Queued invalidation info */