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Commit faa3d6f5 authored by Weidong Han's avatar Weidong Han Committed by Joerg Roedel
Browse files

Change intel iommu APIs of virtual machine domain 



These APIs are used by KVM to use VT-d

Signed-off-by: default avatarWeidong Han <weidong.han@intel.com>
Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent ea6606b0

drivers/pci/intel-iommu.c

+59 −70
Original line number Diff line number Diff line
@@ -2944,96 +2944,87 @@ static void vm_domain_exit(struct dmar_domain *domain) 
	free_domain_mem(domain);

}



void intel_iommu_domain_exit(struct dmar_domain *domain)

struct dmar_domain *intel_iommu_alloc_domain(void)

{

	u64 end;



	/* Domain 0 is reserved, so dont process it */

	if (!domain)

		return;



	end = DOMAIN_MAX_ADDR(domain->gaw);

	end = end & (~VTD_PAGE_MASK);



	/* clear ptes */

	dma_pte_clear_range(domain, 0, end);



	/* free page tables */

	dma_pte_free_pagetable(domain, 0, end);



	iommu_free_domain(domain);

	free_domain_mem(domain);

}

EXPORT_SYMBOL_GPL(intel_iommu_domain_exit);



struct dmar_domain *intel_iommu_domain_alloc(struct pci_dev *pdev)

{

	struct dmar_drhd_unit *drhd;

	struct dmar_domain *domain;

	struct intel_iommu *iommu;



	drhd = dmar_find_matched_drhd_unit(pdev);

	if (!drhd) {

		printk(KERN_ERR "intel_iommu_domain_alloc: drhd == NULL\n");

		return NULL;

	}



	iommu = drhd->iommu;

	if (!iommu) {

		printk(KERN_ERR

			"intel_iommu_domain_alloc: iommu == NULL\n");

		return NULL;

	}

	domain = iommu_alloc_domain(iommu);

	domain = iommu_alloc_vm_domain();

	if (!domain) {

		printk(KERN_ERR

			"intel_iommu_domain_alloc: domain == NULL\n");

		return NULL;

	}

	if (domain_init(domain, DEFAULT_DOMAIN_ADDRESS_WIDTH)) {

	if (vm_domain_init(domain, DEFAULT_DOMAIN_ADDRESS_WIDTH)) {

		printk(KERN_ERR

			"intel_iommu_domain_alloc: domain_init() failed\n");

		intel_iommu_domain_exit(domain);

		vm_domain_exit(domain);

		return NULL;

	}



	return domain;

}

EXPORT_SYMBOL_GPL(intel_iommu_domain_alloc);

EXPORT_SYMBOL_GPL(intel_iommu_alloc_domain);



int intel_iommu_context_mapping(

	struct dmar_domain *domain, struct pci_dev *pdev)

void intel_iommu_free_domain(struct dmar_domain *domain)

{

	int rc;

	rc = domain_context_mapping(domain, pdev);

	return rc;

	vm_domain_exit(domain);

}

EXPORT_SYMBOL_GPL(intel_iommu_context_mapping);

EXPORT_SYMBOL_GPL(intel_iommu_free_domain);



int intel_iommu_page_mapping(

	struct dmar_domain *domain, dma_addr_t iova,

	u64 hpa, size_t size, int prot)

int intel_iommu_attach_device(struct dmar_domain *domain,

			      struct pci_dev *pdev)

{

	int rc;

	rc = domain_page_mapping(domain, iova, hpa, size, prot);

	return rc;

	int ret;



	/* normally pdev is not mapped */

	if (unlikely(domain_context_mapped(pdev))) {

		struct dmar_domain *old_domain;



		old_domain = find_domain(pdev);

		if (old_domain) {

			if (domain->flags & DOMAIN_FLAG_VIRTUAL_MACHINE)

				vm_domain_remove_one_dev_info(old_domain, pdev);

			else

				domain_remove_dev_info(old_domain);

		}

EXPORT_SYMBOL_GPL(intel_iommu_page_mapping);

	}



	ret = domain_context_mapping(domain, pdev);

	if (ret)

		return ret;



void intel_iommu_detach_dev(struct dmar_domain *domain, u8 bus, u8 devfn)

	ret = vm_domain_add_dev_info(domain, pdev);

	return ret;

}

EXPORT_SYMBOL_GPL(intel_iommu_attach_device);



void intel_iommu_detach_device(struct dmar_domain *domain,

			       struct pci_dev *pdev)

{

	struct intel_iommu *iommu;

	vm_domain_remove_one_dev_info(domain, pdev);

}

EXPORT_SYMBOL_GPL(intel_iommu_detach_device);



	iommu = device_to_iommu(bus, devfn);

	iommu_detach_dev(iommu, bus, devfn);

int intel_iommu_map_address(struct dmar_domain *domain, dma_addr_t iova,

			    u64 hpa, size_t size, int prot)

{

	int ret;

	ret = domain_page_mapping(domain, iova, hpa, size, prot);

	return ret;

}

EXPORT_SYMBOL_GPL(intel_iommu_detach_dev);

EXPORT_SYMBOL_GPL(intel_iommu_map_address);



struct dmar_domain *

intel_iommu_find_domain(struct pci_dev *pdev)

void intel_iommu_unmap_address(struct dmar_domain *domain,

			       dma_addr_t iova, size_t size)

{

	return find_domain(pdev);

	dma_addr_t base;



	/* The address might not be aligned */

	base = iova & VTD_PAGE_MASK;

	size = VTD_PAGE_ALIGN(size);

	dma_pte_clear_range(domain, base, base + size);

}

EXPORT_SYMBOL_GPL(intel_iommu_find_domain);

EXPORT_SYMBOL_GPL(intel_iommu_unmap_address);



int intel_iommu_found(void)

{
@@ -3041,17 +3032,15 @@ int intel_iommu_found(void) 
}

EXPORT_SYMBOL_GPL(intel_iommu_found);



u64 intel_iommu_iova_to_pfn(struct dmar_domain *domain, u64 iova)

u64 intel_iommu_iova_to_phys(struct dmar_domain *domain, u64 iova)

{

	struct dma_pte *pte;

	u64 pfn;

	u64 phys = 0;



	pfn = 0;

	pte = addr_to_dma_pte(domain, iova);



	if (pte)

		pfn = dma_pte_addr(pte);

		phys = dma_pte_addr(pte);



	return pfn >> VTD_PAGE_SHIFT;

	return phys;

}

EXPORT_SYMBOL_GPL(intel_iommu_iova_to_pfn);
 
EXPORT_SYMBOL_GPL(intel_iommu_iova_to_phys);

include/linux/intel-iommu.h

+11 −9
Original line number Diff line number Diff line
@@ -330,15 +330,17 @@ extern int qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr, 


extern void qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);



void intel_iommu_domain_exit(struct dmar_domain *domain);

struct dmar_domain *intel_iommu_domain_alloc(struct pci_dev *pdev);

int intel_iommu_context_mapping(struct dmar_domain *domain,

struct dmar_domain *intel_iommu_alloc_domain(void);

void intel_iommu_free_domain(struct dmar_domain *domain);

int intel_iommu_attach_device(struct dmar_domain *domain,

			      struct pci_dev *pdev);

int intel_iommu_page_mapping(struct dmar_domain *domain, dma_addr_t iova,

void intel_iommu_detach_device(struct dmar_domain *domain,

			       struct pci_dev *pdev);

int intel_iommu_map_address(struct dmar_domain *domain, dma_addr_t iova,

			    u64 hpa, size_t size, int prot);

void intel_iommu_detach_dev(struct dmar_domain *domain, u8 bus, u8 devfn);

struct dmar_domain *intel_iommu_find_domain(struct pci_dev *pdev);

u64 intel_iommu_iova_to_pfn(struct dmar_domain *domain, u64 iova);

void intel_iommu_unmap_address(struct dmar_domain *domain,

			       dma_addr_t iova, size_t size);

u64 intel_iommu_iova_to_phys(struct dmar_domain *domain, u64 iova);



#ifdef CONFIG_DMAR

int intel_iommu_found(void);