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iommu/vt-d: Pass iommu to domain_context_mapping_one() and iommu_support_dev_iotlb() 

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2014-03-09 12:52:30 -07:00
parent 0bcb3e28c3
commit 64ae892bfe
1 changed files with 17 additions and 18 deletions
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35
drivers/iommu/intel-iommu.c
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@ -1240,13 +1240,13 @@ static void __iommu_flush_iotlb(struct intel_iommu *iommu, u16 did,
(unsigned long long)DMA_TLB_IAIG(val)); (unsigned long long)DMA_TLB_IAIG(val));
} }
static struct device_domain_info *iommu_support_dev_iotlb( static struct device_domain_info *
struct dmar_domain *domain, int segment, u8 bus, u8 devfn) iommu_support_dev_iotlb (struct dmar_domain *domain, struct intel_iommu *iommu,
u8 bus, u8 devfn)
{ {
int found = 0; int found = 0;
unsigned long flags; unsigned long flags;
struct device_domain_info *info; struct device_domain_info *info;
struct intel_iommu *iommu = device_to_iommu(segment, bus, devfn);
struct pci_dev *pdev; struct pci_dev *pdev;
if (!ecap_dev_iotlb_support(iommu->ecap)) if (!ecap_dev_iotlb_support(iommu->ecap))
@ -1700,12 +1700,12 @@ static void domain_exit(struct dmar_domain *domain)
free_domain_mem(domain); free_domain_mem(domain);
} }
static int domain_context_mapping_one(struct dmar_domain *domain, int segment, static int domain_context_mapping_one(struct dmar_domain *domain,
u8 bus, u8 devfn, int translation) struct intel_iommu *iommu,
u8 bus, u8 devfn, int translation)
{ {
struct context_entry *context; struct context_entry *context;
unsigned long flags; unsigned long flags;
struct intel_iommu *iommu;
struct dma_pte *pgd; struct dma_pte *pgd;
unsigned long num; unsigned long num;
unsigned long ndomains; unsigned long ndomains;
@ -1720,10 +1720,6 @@ static int domain_context_mapping_one(struct dmar_domain *domain, int segment,
BUG_ON(translation != CONTEXT_TT_PASS_THROUGH && BUG_ON(translation != CONTEXT_TT_PASS_THROUGH &&
translation != CONTEXT_TT_MULTI_LEVEL); translation != CONTEXT_TT_MULTI_LEVEL);
iommu = device_to_iommu(segment, bus, devfn);
if (!iommu)
return -ENODEV;
context = device_to_context_entry(iommu, bus, devfn); context = device_to_context_entry(iommu, bus, devfn);
if (!context) if (!context)
return -ENOMEM; return -ENOMEM;
@ -1781,7 +1777,7 @@ static int domain_context_mapping_one(struct dmar_domain *domain, int segment,
context_set_domain_id(context, id); context_set_domain_id(context, id);
if (translation != CONTEXT_TT_PASS_THROUGH) { if (translation != CONTEXT_TT_PASS_THROUGH) {
info = iommu_support_dev_iotlb(domain, segment, bus, devfn); info = iommu_support_dev_iotlb(domain, iommu, bus, devfn);
translation = info ? CONTEXT_TT_DEV_IOTLB : translation = info ? CONTEXT_TT_DEV_IOTLB :
CONTEXT_TT_MULTI_LEVEL; CONTEXT_TT_MULTI_LEVEL;
} }
@ -1836,8 +1832,14 @@ domain_context_mapping(struct dmar_domain *domain, struct pci_dev *pdev,
{ {
int ret; int ret;
struct pci_dev *tmp, *parent; struct pci_dev *tmp, *parent;
struct intel_iommu *iommu;
ret = domain_context_mapping_one(domain, pci_domain_nr(pdev->bus), iommu = device_to_iommu(pci_domain_nr(pdev->bus), pdev->bus->number,
pdev->devfn);
if (!iommu)
return -ENODEV;
ret = domain_context_mapping_one(domain, iommu,
pdev->bus->number, pdev->devfn, pdev->bus->number, pdev->devfn,
translation); translation);
if (ret) if (ret)
@ -1850,8 +1852,7 @@ domain_context_mapping(struct dmar_domain *domain, struct pci_dev *pdev,
/* Secondary interface's bus number and devfn 0 */ /* Secondary interface's bus number and devfn 0 */
parent = pdev->bus->self; parent = pdev->bus->self;
while (parent != tmp) { while (parent != tmp) {
ret = domain_context_mapping_one(domain, ret = domain_context_mapping_one(domain, iommu,
pci_domain_nr(parent->bus),
parent->bus->number, parent->bus->number,
parent->devfn, translation); parent->devfn, translation);
if (ret) if (ret)
@ -1859,13 +1860,11 @@ domain_context_mapping(struct dmar_domain *domain, struct pci_dev *pdev,
parent = parent->bus->self; parent = parent->bus->self;
} }
if (pci_is_pcie(tmp)) /* this is a PCIe-to-PCI bridge */ if (pci_is_pcie(tmp)) /* this is a PCIe-to-PCI bridge */
return domain_context_mapping_one(domain, return domain_context_mapping_one(domain, iommu,
pci_domain_nr(tmp->subordinate),
tmp->subordinate->number, 0, tmp->subordinate->number, 0,
translation); translation);
else /* this is a legacy PCI bridge */ else /* this is a legacy PCI bridge */
return domain_context_mapping_one(domain, return domain_context_mapping_one(domain, iommu,
pci_domain_nr(tmp->bus),
tmp->bus->number, tmp->bus->number,
tmp->devfn, tmp->devfn,
translation); translation);