KVM: rename vtd.c to iommu.c

Impact: file renamed

The code in the vtd.c file can be reused for other IOMMUs as well. So
rename it to make it clear that it handle more than VT-d.

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

1 files changed, 0 insertions, 217 deletions

diff --git a/virt/kvm/vtd.c b/virt/kvm/vtd.c
deleted file mode 100644
index d46de9a..0000000
--- a/virt/kvm/vtd.c
+++ /dev/null
@@ -1,217 +0,0 @@
-/*
- * Copyright (c) 2006, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Copyright (C) 2006-2008 Intel Corporation
- * Copyright IBM Corporation, 2008
- * Author: Allen M. Kay <allen.m.kay@intel.com>
- * Author: Weidong Han <weidong.han@intel.com>
- * Author: Ben-Ami Yassour <benami@il.ibm.com>
- */
-
-#include <linux/list.h>
-#include <linux/kvm_host.h>
-#include <linux/pci.h>
-#include <linux/dmar.h>
-#include <linux/intel-iommu.h>
-
-static int kvm_iommu_unmap_memslots(struct kvm *kvm);
-static void kvm_iommu_put_pages(struct kvm *kvm,
-				gfn_t base_gfn, unsigned long npages);
-
-int kvm_iommu_map_pages(struct kvm *kvm,
-			gfn_t base_gfn, unsigned long npages)
-{
-	gfn_t gfn = base_gfn;
-	pfn_t pfn;
-	int i, r = 0;
-	struct dmar_domain *domain = kvm->arch.intel_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)))
-			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);
-		if (r) {
-			printk(KERN_ERR "kvm_iommu_map_address:"
-			       "iommu failed to map pfn=%lx\n", pfn);
-			goto unmap_pages;
-		}
-		gfn++;
-	}
-	return 0;
-
-unmap_pages:
-	kvm_iommu_put_pages(kvm, base_gfn, i);
-	return r;
-}
-
-static int kvm_iommu_map_memslots(struct kvm *kvm)
-{
-	int i, r;
-
-	down_read(&kvm->slots_lock);
-	for (i = 0; i < kvm->nmemslots; i++) {
-		r = kvm_iommu_map_pages(kvm, kvm->memslots[i].base_gfn,
-					kvm->memslots[i].npages);
-		if (r)
-			break;
-	}
-	up_read(&kvm->slots_lock);
-	return r;
-}
-
-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;
-	int r;
-
-	/* check if iommu exists and in use */
-	if (!domain)
-		return 0;
-
-	pdev = assigned_dev->dev;
-	if (pdev == NULL)
-		return -ENODEV;
-
-	r = intel_iommu_attach_device(domain, pdev);
-	if (r) {
-		printk(KERN_ERR "assign device %x:%x.%x failed",
-			pdev->bus->number,
-			PCI_SLOT(pdev->devfn),
-			PCI_FUNC(pdev->devfn));
-		return r;
-	}
-
-	printk(KERN_DEBUG "assign device: host bdf = %x:%x:%x\n",
-		assigned_dev->host_busnr,
-		PCI_SLOT(assigned_dev->host_devfn),
-		PCI_FUNC(assigned_dev->host_devfn));
-
-	return 0;
-}
-
-int kvm_deassign_device(struct kvm *kvm,
-			struct kvm_assigned_dev_kernel *assigned_dev)
-{
-	struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
-	struct pci_dev *pdev = NULL;
-
-	/* check if iommu exists and in use */
-	if (!domain)
-		return 0;
-
-	pdev = assigned_dev->dev;
-	if (pdev == NULL)
-		return -ENODEV;
-
-	intel_iommu_detach_device(domain, pdev);
-
-	printk(KERN_DEBUG "deassign device: host bdf = %x:%x:%x\n",
-		assigned_dev->host_busnr,
-		PCI_SLOT(assigned_dev->host_devfn),
-		PCI_FUNC(assigned_dev->host_devfn));
-
-	return 0;
-}
-
-int kvm_iommu_map_guest(struct kvm *kvm)
-{
-	int r;
-
-	if (!intel_iommu_found()) {
-		printk(KERN_ERR "%s: intel iommu not found\n", __func__);
-		return -ENODEV;
-	}
-
-	kvm->arch.intel_iommu_domain = intel_iommu_alloc_domain();
-	if (!kvm->arch.intel_iommu_domain)
-		return -ENOMEM;
-
-	r = kvm_iommu_map_memslots(kvm);
-	if (r)
-		goto out_unmap;
-
-	return 0;
-
-out_unmap:
-	kvm_iommu_unmap_memslots(kvm);
-	return r;
-}
-
-static void kvm_iommu_put_pages(struct kvm *kvm,
-				gfn_t base_gfn, unsigned long npages)
-{
-	gfn_t gfn = base_gfn;
-	pfn_t pfn;
-	struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
-	unsigned long i;
-	u64 phys;
-
-	/* check if iommu exists and in use */
-	if (!domain)
-		return;
-
-	for (i = 0; i < npages; i++) {
-		phys = intel_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);
-}
-
-static int kvm_iommu_unmap_memslots(struct kvm *kvm)
-{
-	int i;
-	down_read(&kvm->slots_lock);
-	for (i = 0; i < kvm->nmemslots; i++) {
-		kvm_iommu_put_pages(kvm, kvm->memslots[i].base_gfn,
-				    kvm->memslots[i].npages);
-	}
-	up_read(&kvm->slots_lock);
-
-	return 0;
-}
-
-int kvm_iommu_unmap_guest(struct kvm *kvm)
-{
-	struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
-
-	/* check if iommu exists and in use */
-	if (!domain)
-		return 0;
-
-	kvm_iommu_unmap_memslots(kvm);
-	intel_iommu_free_domain(domain);
-	return 0;
-}