irq_remapping/vt-d: Change prototypes to prepare for hierarchical irqdomain

Prepare for the conversion to hierarchical irqdomains by changing
function prototypes. No functional changes.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: David Cohen <david.a.cohen@linux.intel.com>
Cc: Sander Eikelenboom <linux@eikelenboom.it>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: iommu@lists.linux-foundation.org
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: Joerg Roedel <joro@8bytes.org>
Link: http://lkml.kernel.org/r/1428905519-23704-10-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

drivers/iommu/intel_irq_remapping.c

@@ -82,10 +82,10 @@ static int get_irte(int irq, struct irte *entry)
 	return 0;
 }
 
-static int alloc_irte(struct intel_iommu *iommu, int irq, u16 count)
+static int alloc_irte(struct intel_iommu *iommu, int irq,
+		      struct irq_2_iommu *irq_iommu, u16 count)
 {
 	struct ir_table *table = iommu->ir_table;
-	struct irq_2_iommu *irq_iommu = irq_2_iommu(irq);
 	struct irq_cfg *cfg = irq_cfg(irq);
 	unsigned int mask = 0;
 	unsigned long flags;
@@ -173,9 +173,9 @@ static int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index, u16 subha
 	return 0;
 }
 
-static int modify_irte(int irq, struct irte *irte_modified)
+static int modify_irte(struct irq_2_iommu *irq_iommu,
+		       struct irte *irte_modified)
 {
-	struct irq_2_iommu *irq_iommu = irq_2_iommu(irq);
 	struct intel_iommu *iommu;
 	unsigned long flags;
 	struct irte *irte;
@@ -242,7 +242,7 @@ static int clear_entries(struct irq_2_iommu *irq_iommu)
 		return 0;
 
 	iommu = irq_iommu->iommu;
-	index = irq_iommu->irte_index + irq_iommu->sub_handle;
+	index = irq_iommu->irte_index;
 
 	start = iommu->ir_table->base + index;
 	end = start + (1 << irq_iommu->irte_mask);
@@ -986,7 +986,7 @@ static int intel_setup_ioapic_entry(int irq,
 		pr_warn("No mapping iommu for ioapic %d\n", ioapic_id);
 		index = -ENODEV;
 	} else {
-		index = alloc_irte(iommu, irq, 1);
+		index = alloc_irte(iommu, irq, irq_2_iommu(irq), 1);
 		if (index < 0) {
 			pr_warn("Failed to allocate IRTE for ioapic %d\n",
 				ioapic_id);
@@ -1002,7 +1002,7 @@ static int intel_setup_ioapic_entry(int irq,
 	/* Set source-id of interrupt request */
 	set_ioapic_sid(&irte, ioapic_id);
 
-	modify_irte(irq, &irte);
+	modify_irte(irq_2_iommu(irq), &irte);
 
 	apic_printk(APIC_VERBOSE, KERN_DEBUG "IOAPIC[%d]: "
 		"Set IRTE entry (P:%d FPD:%d Dst_Mode:%d "
@@ -1089,7 +1089,7 @@ intel_ioapic_set_affinity(struct irq_data *data, const struct cpumask *mask,
 	 * Atomically updates the IRTE with the new destination, vector
 	 * and flushes the interrupt entry cache.
 	 */
-	modify_irte(irq, &irte);
+	modify_irte(irq_2_iommu(irq), &irte);
 
 	/*
 	 * After this point, all the interrupts will start arriving
@@ -1125,7 +1125,7 @@ static void intel_compose_msi_msg(struct pci_dev *pdev,
 	else
 		set_hpet_sid(&irte, hpet_id);
 
-	modify_irte(irq, &irte);
+	modify_irte(irq_2_iommu(irq), &irte);
 
 	msg->address_hi = MSI_ADDR_BASE_HI;
 	msg->data = sub_handle;
@@ -1152,7 +1152,7 @@ static int intel_msi_alloc_irq(struct pci_dev *dev, int irq, int nvec)
 		       "Unable to map PCI %s to iommu\n", pci_name(dev));
 		index = -ENOENT;
 	} else {
-		index = alloc_irte(iommu, irq, nvec);
+		index = alloc_irte(iommu, irq, irq_2_iommu(irq), nvec);
 		if (index < 0) {
 			printk(KERN_ERR
 			       "Unable to allocate %d IRTE for PCI %s\n",
@@ -1196,7 +1196,7 @@ static int intel_alloc_hpet_msi(unsigned int irq, unsigned int id)
 	down_read(&dmar_global_lock);
 	iommu = map_hpet_to_ir(id);
 	if (iommu) {
-		index = alloc_irte(iommu, irq, 1);
+		index = alloc_irte(iommu, irq, irq_2_iommu(irq), 1);
 		if (index >= 0)
 			ret = 0;
 	}