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KVM: change KVM to use IOMMU API

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Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2008-12-03 14:43:34 +01:00
parent 1aaf118352
commit 19de40a847
9 changed files with 33 additions and 34 deletions
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45
virt/kvm/iommu.c
View file

@ -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);
@ -37,7 +38,7 @@ 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)
@ -45,16 +46,15 @@ int kvm_iommu_map_pages(struct kvm *kvm,
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;
}