KVM: Device Assignment: Move vtd.c from arch/x86/kvm/ to virt/kvm/
Preparation for kvm/ia64 VT-d support.
Signed-off-by: Zhang xiantao <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index 3072b17..7dce593 100644
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -7,14 +7,14 @@
ifeq ($(CONFIG_KVM_TRACE),y)
common-objs += $(addprefix ../../../virt/kvm/, kvm_trace.o)
endif
+ifeq ($(CONFIG_DMAR),y)
+common-objs += $(addprefix ../../../virt/kvm/, vtd.o)
+endif
EXTRA_CFLAGS += -Ivirt/kvm -Iarch/x86/kvm
kvm-objs := $(common-objs) x86.o mmu.o x86_emulate.o i8259.o irq.o lapic.o \
i8254.o
-ifeq ($(CONFIG_DMAR),y)
-kvm-objs += vtd.o
-endif
obj-$(CONFIG_KVM) += kvm.o
kvm-intel-objs = vmx.o
obj-$(CONFIG_KVM_INTEL) += kvm-intel.o
diff --git a/arch/x86/kvm/vtd.c b/arch/x86/kvm/vtd.c
deleted file mode 100644
index a770874..0000000
--- a/arch/x86/kvm/vtd.c
+++ /dev/null
@@ -1,191 +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 */
- pfn = (pfn_t)intel_iommu_iova_to_pfn(domain,
- gfn_to_gpa(gfn));
- if (pfn)
- continue;
-
- pfn = gfn_to_pfn(kvm, gfn);
- r = intel_iommu_page_mapping(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_pages:"
- "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_iommu_map_guest(struct kvm *kvm,
- struct kvm_assigned_dev_kernel *assigned_dev)
-{
- struct pci_dev *pdev = NULL;
- int r;
-
- if (!intel_iommu_found()) {
- printk(KERN_ERR "%s: intel iommu not found\n", __func__);
- return -ENODEV;
- }
-
- printk(KERN_DEBUG "VT-d direct map: host bdf = %x:%x:%x\n",
- assigned_dev->host_busnr,
- PCI_SLOT(assigned_dev->host_devfn),
- PCI_FUNC(assigned_dev->host_devfn));
-
- pdev = assigned_dev->dev;
-
- if (pdev == NULL) {
- if (kvm->arch.intel_iommu_domain) {
- intel_iommu_domain_exit(kvm->arch.intel_iommu_domain);
- kvm->arch.intel_iommu_domain = NULL;
- }
- return -ENODEV;
- }
-
- kvm->arch.intel_iommu_domain = intel_iommu_domain_alloc(pdev);
- if (!kvm->arch.intel_iommu_domain)
- return -ENODEV;
-
- r = kvm_iommu_map_memslots(kvm);
- if (r)
- goto out_unmap;
-
- intel_iommu_detach_dev(kvm->arch.intel_iommu_domain,
- pdev->bus->number, pdev->devfn);
-
- r = intel_iommu_context_mapping(kvm->arch.intel_iommu_domain,
- pdev);
- if (r) {
- printk(KERN_ERR "Domain context map for %s failed",
- pci_name(pdev));
- 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;
- int i;
-
- for (i = 0; i < npages; i++) {
- pfn = (pfn_t)intel_iommu_iova_to_pfn(domain,
- gfn_to_gpa(gfn));
- kvm_release_pfn_clean(pfn);
- gfn++;
- }
-}
-
-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 kvm_assigned_dev_kernel *entry;
- struct dmar_domain *domain = kvm->arch.intel_iommu_domain;
-
- /* check if iommu exists and in use */
- if (!domain)
- return 0;
-
- list_for_each_entry(entry, &kvm->arch.assigned_dev_head, list) {
- printk(KERN_DEBUG "VT-d unmap: host bdf = %x:%x:%x\n",
- entry->host_busnr,
- PCI_SLOT(entry->host_devfn),
- PCI_FUNC(entry->host_devfn));
-
- /* detach kvm dmar domain */
- intel_iommu_detach_dev(domain, entry->host_busnr,
- entry->host_devfn);
- }
- kvm_iommu_unmap_memslots(kvm);
- intel_iommu_domain_exit(domain);
- return 0;
-}