diff options
Diffstat (limited to 'drivers/iommu/intel-iommu.c')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 0099667a397..b4f0e28dfa4 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -47,6 +47,7 @@ #include <asm/iommu.h> #include "irq_remapping.h" +#include "pci.h" #define ROOT_SIZE VTD_PAGE_SIZE #define CONTEXT_SIZE VTD_PAGE_SIZE @@ -3665,6 +3666,7 @@ static struct notifier_block device_nb = { int __init intel_iommu_init(void) { int ret = 0; + struct dmar_drhd_unit *drhd; /* VT-d is required for a TXT/tboot launch, so enforce that */ force_on = tboot_force_iommu(); @@ -3675,6 +3677,20 @@ int __init intel_iommu_init(void) return -ENODEV; } + /* + * Disable translation if already enabled prior to OS handover. + */ + for_each_drhd_unit(drhd) { + struct intel_iommu *iommu; + + if (drhd->ignored) + continue; + + iommu = drhd->iommu; + if (iommu->gcmd & DMA_GCMD_TE) + iommu_disable_translation(iommu); + } + if (dmar_dev_scope_init() < 0) { if (force_on) panic("tboot: Failed to initialize DMAR device scope\n"); @@ -4111,7 +4127,7 @@ static size_t intel_iommu_unmap(struct iommu_domain *domain, } static phys_addr_t intel_iommu_iova_to_phys(struct iommu_domain *domain, - unsigned long iova) + dma_addr_t iova) { struct dmar_domain *dmar_domain = domain->priv; struct dma_pte *pte; @@ -4137,12 +4153,6 @@ static int intel_iommu_domain_has_cap(struct iommu_domain *domain, return 0; } -static void swap_pci_ref(struct pci_dev **from, struct pci_dev *to) -{ - pci_dev_put(*from); - *from = to; -} - #define REQ_ACS_FLAGS (PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF) static int intel_iommu_add_device(struct device *dev) |