KVM: change KVM to use IOMMU API

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

arch/ia64/include/asm/kvm_host.h

@@ -467,7 +467,7 @@ struct kvm_arch {
 	struct kvm_sal_data rdv_sal_data;
 
 	struct list_head assigned_dev_head;
-	struct dmar_domain *intel_iommu_domain;
+	struct iommu_domain *iommu_domain;
 	struct hlist_head irq_ack_notifier_list;
 
 	unsigned long irq_sources_bitmap;

arch/ia64/kvm/Makefile

@@ -51,7 +51,7 @@ EXTRA_AFLAGS += -Ivirt/kvm -Iarch/ia64/kvm/
 common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o \
 		coalesced_mmio.o irq_comm.o)
 
-ifeq ($(CONFIG_DMAR),y)
+ifeq ($(CONFIG_IOMMU_API),y)
 common-objs += $(addprefix ../../../virt/kvm/, iommu.o)
 endif
 

arch/ia64/kvm/kvm-ia64.c

@@ -31,6 +31,7 @@
 #include <linux/bitops.h>
 #include <linux/hrtimer.h>
 #include <linux/uaccess.h>
+#include <linux/iommu.h>
 #include <linux/intel-iommu.h>
 
 #include <asm/pgtable.h>
@@ -188,7 +189,7 @@ int kvm_dev_ioctl_check_extension(long ext)
 		r = KVM_COALESCED_MMIO_PAGE_OFFSET;
 		break;
 	case KVM_CAP_IOMMU:
-		r = intel_iommu_found();
+		r = iommu_found();
 		break;
 	default:
 		r = 0;

arch/x86/include/asm/kvm_host.h

@@ -360,7 +360,7 @@ struct kvm_arch{
 	struct list_head active_mmu_pages;
 	struct list_head assigned_dev_head;
 	struct list_head oos_global_pages;
-	struct dmar_domain *intel_iommu_domain;
+	struct iommu_domain *iommu_domain;
 	struct kvm_pic *vpic;
 	struct kvm_ioapic *vioapic;
 	struct kvm_pit *vpit;

arch/x86/kvm/Makefile

@@ -7,7 +7,7 @@ common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o \
 ifeq ($(CONFIG_KVM_TRACE),y)
 common-objs += $(addprefix ../../../virt/kvm/, kvm_trace.o)
 endif
-ifeq ($(CONFIG_DMAR),y)
+ifeq ($(CONFIG_IOMMU_API),y)
 common-objs += $(addprefix ../../../virt/kvm/, iommu.o)
 endif
 

arch/x86/kvm/x86.c

@@ -34,6 +34,7 @@
 #include <linux/module.h>
 #include <linux/mman.h>
 #include <linux/highmem.h>
+#include <linux/iommu.h>
 #include <linux/intel-iommu.h>
 
 #include <asm/uaccess.h>
@@ -989,7 +990,7 @@ int kvm_dev_ioctl_check_extension(long ext)
 		r = !tdp_enabled;
 		break;
 	case KVM_CAP_IOMMU:
-		r = intel_iommu_found();
+		r = iommu_found();
 		break;
 	default:
 		r = 0;

include/linux/kvm_host.h

@@ -328,7 +328,7 @@ void kvm_unregister_irq_ack_notifier(struct kvm_irq_ack_notifier *kian);
 int kvm_request_irq_source_id(struct kvm *kvm);
 void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
 
-#ifdef CONFIG_DMAR
+#ifdef CONFIG_IOMMU_API
 int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
 			unsigned long npages);
 int kvm_iommu_map_guest(struct kvm *kvm);
@@ -337,7 +337,7 @@ int kvm_assign_device(struct kvm *kvm,
 		      struct kvm_assigned_dev_kernel *assigned_dev);
 int kvm_deassign_device(struct kvm *kvm,
 			struct kvm_assigned_dev_kernel *assigned_dev);
-#else /* CONFIG_DMAR */
+#else /* CONFIG_IOMMU_API */
 static inline int kvm_iommu_map_pages(struct kvm *kvm,
 				      gfn_t base_gfn,
 				      unsigned long npages)
@@ -366,7 +366,7 @@ static inline int kvm_deassign_device(struct kvm *kvm,
 {
 	return 0;
 }
-#endif /* CONFIG_DMAR */
+#endif /* CONFIG_IOMMU_API */
 
 static inline void kvm_guest_enter(void)
 {

virt/kvm/iommu.c

@@ -25,6 +25,7 @@
 #include <linux/kvm_host.h>
 #include <linux/pci.h>
 #include <linux/dmar.h>
+#include <linux/iommu.h>
 #include <linux/intel-iommu.h>
 
 static int kvm_iommu_unmap_memslots(struct kvm *kvm);
@@ -37,24 +38,23 @@ int kvm_iommu_map_pages(struct kvm *kvm,
 	gfn_t gfn = base_gfn;
 	pfn_t pfn;
 	int i, r = 0;
-	struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
+	struct iommu_domain *domain = kvm->arch.iommu_domain;
 
 	/* check if iommu exists and in use */
 	if (!domain)
 		return 0;
 
 	for (i = 0; i < npages; i++) {
 		/* check if already mapped */
-		if (intel_iommu_iova_to_phys(domain,
-					     gfn_to_gpa(gfn)))
+		if (iommu_iova_to_phys(domain, gfn_to_gpa(gfn)))
 			continue;
 
 		pfn = gfn_to_pfn(kvm, gfn);
-		r = intel_iommu_map_address(domain,
-					    gfn_to_gpa(gfn),
-					    pfn_to_hpa(pfn),
-					    PAGE_SIZE,
-					    DMA_PTE_READ | DMA_PTE_WRITE);
+		r = iommu_map_range(domain,
+				    gfn_to_gpa(gfn),
+				    pfn_to_hpa(pfn),
+				    PAGE_SIZE,
+				    IOMMU_READ | IOMMU_WRITE);
 		if (r) {
 			printk(KERN_ERR "kvm_iommu_map_address:"
 			       "iommu failed to map pfn=%lx\n", pfn);
@@ -88,7 +88,7 @@ int kvm_assign_device(struct kvm *kvm,
 		      struct kvm_assigned_dev_kernel *assigned_dev)
 {
 	struct pci_dev *pdev = NULL;
-	struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
+	struct iommu_domain *domain = kvm->arch.iommu_domain;
 	int r;
 
 	/* check if iommu exists and in use */
@@ -99,7 +99,7 @@ int kvm_assign_device(struct kvm *kvm,
 	if (pdev == NULL)
 		return -ENODEV;
 
-	r = intel_iommu_attach_device(domain, pdev);
+	r = iommu_attach_device(domain, &pdev->dev);
 	if (r) {
 		printk(KERN_ERR "assign device %x:%x.%x failed",
 			pdev->bus->number,
@@ -119,7 +119,7 @@ int kvm_assign_device(struct kvm *kvm,
 int kvm_deassign_device(struct kvm *kvm,
 			struct kvm_assigned_dev_kernel *assigned_dev)
 {
-	struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
+	struct iommu_domain *domain = kvm->arch.iommu_domain;
 	struct pci_dev *pdev = NULL;
 
 	/* check if iommu exists and in use */
@@ -130,7 +130,7 @@ int kvm_deassign_device(struct kvm *kvm,
 	if (pdev == NULL)
 		return -ENODEV;
 
-	intel_iommu_detach_device(domain, pdev);
+	iommu_detach_device(domain, &pdev->dev);
 
 	printk(KERN_DEBUG "deassign device: host bdf = %x:%x:%x\n",
 		assigned_dev->host_busnr,
@@ -144,13 +144,13 @@ int kvm_iommu_map_guest(struct kvm *kvm)
 {
 	int r;
 
-	if (!intel_iommu_found()) {
-		printk(KERN_ERR "%s: intel iommu not found\n", __func__);
+	if (!iommu_found()) {
+		printk(KERN_ERR "%s: iommu not found\n", __func__);
 		return -ENODEV;
 	}
 
-	kvm->arch.intel_iommu_domain = intel_iommu_alloc_domain();
-	if (!kvm->arch.intel_iommu_domain)
+	kvm->arch.iommu_domain = iommu_domain_alloc();
+	if (!kvm->arch.iommu_domain)
 		return -ENOMEM;
 
 	r = kvm_iommu_map_memslots(kvm);
@@ -169,7 +169,7 @@ static void kvm_iommu_put_pages(struct kvm *kvm,
 {
 	gfn_t gfn = base_gfn;
 	pfn_t pfn;
-	struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
+	struct iommu_domain *domain = kvm->arch.iommu_domain;
 	unsigned long i;
 	u64 phys;
 
@@ -178,16 +178,13 @@ static void kvm_iommu_put_pages(struct kvm *kvm,
 		return;
 
 	for (i = 0; i < npages; i++) {
-		phys = intel_iommu_iova_to_phys(domain,
-						gfn_to_gpa(gfn));
+		phys = iommu_iova_to_phys(domain, gfn_to_gpa(gfn));
 		pfn = phys >> PAGE_SHIFT;
 		kvm_release_pfn_clean(pfn);
 		gfn++;
 	}
 
-	intel_iommu_unmap_address(domain,
-				  gfn_to_gpa(base_gfn),
-				  PAGE_SIZE * npages);
+	iommu_unmap_range(domain, gfn_to_gpa(base_gfn), PAGE_SIZE * npages);
 }
 
 static int kvm_iommu_unmap_memslots(struct kvm *kvm)
@@ -205,13 +202,13 @@ static int kvm_iommu_unmap_memslots(struct kvm *kvm)
 
 int kvm_iommu_unmap_guest(struct kvm *kvm)
 {
-	struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
+	struct iommu_domain *domain = kvm->arch.iommu_domain;
 
 	/* check if iommu exists and in use */
 	if (!domain)
 		return 0;
 
 	kvm_iommu_unmap_memslots(kvm);
-	intel_iommu_free_domain(domain);
+	iommu_domain_free(domain);
 	return 0;
 }

virt/kvm/kvm_main.c

@@ -504,7 +504,7 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
 	list_add(&match->list, &kvm->arch.assigned_dev_head);
 
 	if (assigned_dev->flags & KVM_DEV_ASSIGN_ENABLE_IOMMU) {
-		if (!kvm->arch.intel_iommu_domain) {
+		if (!kvm->arch.iommu_domain) {
 			r = kvm_iommu_map_guest(kvm);
 			if (r)
 				goto out_list_del;