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Code

iommu/vt-d: Use dev_iommu_priv_get/set()

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Remove the use of dev->archdata.iommu and use the private per-device
pointer provided by IOMMU core code instead.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20200625130836.1916-3-joro@8bytes.org
This commit is contained in:
Joerg Roedel 2020-06-25 15:08:25 +02:00
parent 0f45b04da1
commit 01b9d4e211
2 changed files with 17 additions and 11 deletions
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10
drivers/gpu/drm/i915/selftests/mock_gem_device.c
View File

@ -24,6 +24,7 @@
#include <linux/pm_domain.h>
#include <linux/pm_runtime.h>
#include <linux/iommu.h>
#include <drm/drm_managed.h>
@ -118,6 +119,9 @@ struct drm_i915_private *mock_gem_device(void)
{
struct drm_i915_private *i915;
struct pci_dev *pdev;
#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
struct dev_iommu iommu;
#endif
int err;
pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
@ -136,8 +140,10 @@ struct drm_i915_private *mock_gem_device(void)
dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
/* hack to disable iommu for the fake device; force identity mapping */
pdev->dev.archdata.iommu = (void *)-1;
/* HACK HACK HACK to disable iommu for the fake device; force identity mapping */
memset(&iommu, 0, sizeof(iommu));
iommu.priv = (void *)-1;
pdev->dev.iommu = &iommu;
#endif
pci_set_drvdata(pdev, i915);

18
drivers/iommu/intel/iommu.c
View File

@ -372,7 +372,7 @@ struct device_domain_info *get_domain_info(struct device *dev)
if (!dev)
return NULL;
info = dev->archdata.iommu;
info = dev_iommu_priv_get(dev);
if (unlikely(info == DUMMY_DEVICE_DOMAIN_INFO ||
info == DEFER_DEVICE_DOMAIN_INFO))
return NULL;
@ -743,12 +743,12 @@ struct context_entry *iommu_context_addr(struct intel_iommu *iommu, u8 bus,
static int iommu_dummy(struct device *dev)
{
return dev->archdata.iommu == DUMMY_DEVICE_DOMAIN_INFO;
return dev_iommu_priv_get(dev) == DUMMY_DEVICE_DOMAIN_INFO;
}
static bool attach_deferred(struct device *dev)
{
return dev->archdata.iommu == DEFER_DEVICE_DOMAIN_INFO;
return dev_iommu_priv_get(dev) == DEFER_DEVICE_DOMAIN_INFO;
}
/**
@ -2420,7 +2420,7 @@ static inline void unlink_domain_info(struct device_domain_info *info)
list_del(&info->link);
list_del(&info->global);
if (info->dev)
info->dev->archdata.iommu = NULL;
dev_iommu_priv_set(info->dev, NULL);
}
static void domain_remove_dev_info(struct dmar_domain *domain)
@ -2453,7 +2453,7 @@ static void do_deferred_attach(struct device *dev)
{
struct iommu_domain *domain;
dev->archdata.iommu = NULL;
dev_iommu_priv_set(dev, NULL);
domain = iommu_get_domain_for_dev(dev);
if (domain)
intel_iommu_attach_device(domain, dev);
@ -2599,7 +2599,7 @@ static struct dmar_domain *dmar_insert_one_dev_info(struct intel_iommu *iommu,
list_add(&info->link, &domain->devices);
list_add(&info->global, &device_domain_list);
if (dev)
dev->archdata.iommu = info;
dev_iommu_priv_set(dev, info);
spin_unlock_irqrestore(&device_domain_lock, flags);
/* PASID table is mandatory for a PCI device in scalable mode. */
@ -4004,7 +4004,7 @@ static void quirk_ioat_snb_local_iommu(struct pci_dev *pdev)
if (!drhd || drhd->reg_base_addr - vtbar != 0xa000) {
pr_warn_once(FW_BUG "BIOS assigned incorrect VT-d unit for Intel(R) QuickData Technology device\n");
add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
pdev->dev.archdata.iommu = DUMMY_DEVICE_DOMAIN_INFO;
dev_iommu_priv_set(&pdev->dev, DUMMY_DEVICE_DOMAIN_INFO);
}
}
DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB, quirk_ioat_snb_local_iommu);
@ -4043,7 +4043,7 @@ static void __init init_no_remapping_devices(void)
drhd->ignored = 1;
for_each_active_dev_scope(drhd->devices,
drhd->devices_cnt, i, dev)
dev->archdata.iommu = DUMMY_DEVICE_DOMAIN_INFO;
dev_iommu_priv_set(dev, DUMMY_DEVICE_DOMAIN_INFO);
}
}
}
@ -5665,7 +5665,7 @@ static struct iommu_device *intel_iommu_probe_device(struct device *dev)
return ERR_PTR(-ENODEV);
if (translation_pre_enabled(iommu))
dev->archdata.iommu = DEFER_DEVICE_DOMAIN_INFO;
dev_iommu_priv_set(dev, DEFER_DEVICE_DOMAIN_INFO);
return &iommu->iommu;
}