core/iommu changes for v3.5

new file mode 100644
index 0000000..a8687b1
@@ -0,0 +1,4 @@
+#ifndef __IA64_INTR_REMAPPING_H
+#define __IA64_INTR_REMAPPING_H
+#define irq_remapping_enabled 0
+#endif

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index edc2448..3722179 100644
@@ -35,6 +35,7 @@
 #include <linux/smp.h>
 #include <linux/mm.h>
 
+#include <asm/irq_remapping.h>
 #include <asm/perf_event.h>
 #include <asm/x86_init.h>
 #include <asm/pgalloc.h>

@@ -1441,8 +1442,8 @@ void __init bsp_end_local_APIC_setup(void)
 	 * Now that local APIC setup is completed for BP, configure the fault
 	 * handling for interrupt remapping.
 	 */
-	if (intr_remapping_enabled)
-		enable_drhd_fault_handling();
+	if (irq_remapping_enabled)
+		irq_remap_enable_fault_handling();
 
 }
 

@@ -1517,7 +1518,7 @@ void enable_x2apic(void)
 int __init enable_IR(void)
 {
 #ifdef CONFIG_IRQ_REMAP
-	if (!intr_remapping_supported()) {
+	if (!irq_remapping_supported()) {
 		pr_debug("intr-remapping not supported\n");
 		return -1;
 	}

@@ -1528,7 +1529,7 @@ int __init enable_IR(void)
 		return -1;
 	}
 
-	return enable_intr_remapping();
+	return irq_remapping_enable();
 #endif
 	return -1;
 }

@@ -1537,10 +1538,13 @@ void __init enable_IR_x2apic(void)
 {
 	unsigned long flags;
 	int ret, x2apic_enabled = 0;
-	int dmar_table_init_ret;
+	int hardware_init_ret;
 
-	dmar_table_init_ret = dmar_table_init();
-	if (dmar_table_init_ret && !x2apic_supported())
+	/* Make sure irq_remap_ops are initialized */
+	setup_irq_remapping_ops();
+
+	hardware_init_ret = irq_remapping_prepare();
+	if (hardware_init_ret && !x2apic_supported())
 		return;
 
 	ret = save_ioapic_entries();

@@ -1556,7 +1560,7 @@ void __init enable_IR_x2apic(void)
 	if (x2apic_preenabled && nox2apic)
 		disable_x2apic();
 
-	if (dmar_table_init_ret)
+	if (hardware_init_ret)
 		ret = -1;
 	else
 		ret = enable_IR();

@@ -2176,8 +2180,8 @@ static int lapic_suspend(void)
 	local_irq_save(flags);
 	disable_local_APIC();
 
-	if (intr_remapping_enabled)
-		disable_intr_remapping();
+	if (irq_remapping_enabled)
+		irq_remapping_disable();
 
 	local_irq_restore(flags);
 	return 0;

@@ -2193,7 +2197,7 @@ static void lapic_resume(void)
 		return;
 
 	local_irq_save(flags);
-	if (intr_remapping_enabled) {
+	if (irq_remapping_enabled) {
 		/*
 		 * IO-APIC and PIC have their own resume routines.
 		 * We just mask them here to make sure the interrupt

@@ -2245,8 +2249,8 @@ static void lapic_resume(void)
 	apic_write(APIC_ESR, 0);
 	apic_read(APIC_ESR);
 
-	if (intr_remapping_enabled)
-		reenable_intr_remapping(x2apic_mode);
+	if (irq_remapping_enabled)
+		irq_remapping_reenable(x2apic_mode);
 
 	local_irq_restore(flags);
 }

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index 35c1e17..3a74e44 100644
@@ -36,6 +36,7 @@
 #include <linux/tboot.h>
 #include <linux/dmi.h>
 #include <linux/slab.h>
+#include <asm/irq_remapping.h>
 #include <asm/iommu_table.h>
 
 #define PREFIX "DMAR: "

@@ -555,7 +556,7 @@ int __init detect_intel_iommu(void)
 
 		dmar = (struct acpi_table_dmar *) dmar_tbl;
 
-		if (ret && intr_remapping_enabled && cpu_has_x2apic &&
+		if (ret && irq_remapping_enabled && cpu_has_x2apic &&
 		    dmar->flags & 0x1)
 			printk(KERN_INFO
 			       "Queued invalidation will be enabled to support x2apic and Intr-remapping.\n");

@@ -1041,7 +1042,7 @@ static const char *dma_remap_fault_reasons[] =
 	"non-zero reserved fields in PTE",
 };
 
-static const char *intr_remap_fault_reasons[] =
+static const char *irq_remap_fault_reasons[] =
 {
 	"Detected reserved fields in the decoded interrupt-remapped request",
 	"Interrupt index exceeded the interrupt-remapping table size",

@@ -1056,10 +1057,10 @@ static const char *intr_remap_fault_reasons[] =
 
 const char *dmar_get_fault_reason(u8 fault_reason, int *fault_type)
 {
-	if (fault_reason >= 0x20 && (fault_reason <= 0x20 +
-				     ARRAY_SIZE(intr_remap_fault_reasons))) {
+	if (fault_reason >= 0x20 && (fault_reason - 0x20 <
+					ARRAY_SIZE(irq_remap_fault_reasons))) {
 		*fault_type = INTR_REMAP;
-		return intr_remap_fault_reasons[fault_reason - 0x20];
+		return irq_remap_fault_reasons[fault_reason - 0x20];
 	} else if (fault_reason < ARRAY_SIZE(dma_remap_fault_reasons)) {
 		*fault_type = DMA_REMAP;
 		return dma_remap_fault_reasons[fault_reason];

index f93d5ac..bf2fbaa 100644
@@ -42,6 +42,7 @@
 #include <linux/dmi.h>
 #include <linux/pci-ats.h>
 #include <linux/memblock.h>
+#include <asm/irq_remapping.h>
 #include <asm/cacheflush.h>
 #include <asm/iommu.h>
 

@@ -4082,7 +4083,7 @@ static int intel_iommu_domain_has_cap(struct iommu_domain *domain,
 	if (cap == IOMMU_CAP_CACHE_COHERENCY)
 		return dmar_domain->iommu_snooping;
 	if (cap == IOMMU_CAP_INTR_REMAP)
-		return intr_remapping_enabled;
+		return irq_remapping_enabled;
 
 	return 0;
 }

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deleted file mode 100644
index 5662fec..0000000
@@ -1,17 +0,0 @@
-#include <linux/intel-iommu.h>
-
-struct ioapic_scope {
-	struct intel_iommu *iommu;
-	unsigned int id;
-	unsigned int bus;	/* PCI bus number */
-	unsigned int devfn;	/* PCI devfn number */
-};
-
-struct hpet_scope {
-	struct intel_iommu *iommu;
-	u8 id;
-	unsigned int bus;
-	unsigned int devfn;
-};
-
-#define IR_X2APIC_MODE(mode) (mode ? (1 << 11) : 0)

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