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iommu/vt-d: Make the blocked domain support PASID

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The blocked domain can be extended to park PASID of a device to be the
DMA blocking state. By this the remove_dev_pasid() op is dropped.

Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20241204122928.11987-6-yi.l.liu@intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Yi Liu 2024-12-04 04:29:26 -08:00 committed by Joerg Roedel
parent ef181762cb
commit 4f0bdab175
1 changed files with 11 additions and 4 deletions
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15
drivers/iommu/intel/iommu.c
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@ -3250,10 +3250,15 @@ static int blocking_domain_attach_dev(struct iommu_domain *domain,
return 0;
}
static int blocking_domain_set_dev_pasid(struct iommu_domain *domain,
struct device *dev, ioasid_t pasid,
struct iommu_domain *old);
static struct iommu_domain blocking_domain = {
.type = IOMMU_DOMAIN_BLOCKED,
.ops = &(const struct iommu_domain_ops) {
.attach_dev = blocking_domain_attach_dev,
.set_dev_pasid = blocking_domain_set_dev_pasid,
}
};
@ -4099,13 +4104,16 @@ void domain_remove_dev_pasid(struct iommu_domain *domain,
kfree(dev_pasid);
}
static void intel_iommu_remove_dev_pasid(struct device *dev, ioasid_t pasid,
struct iommu_domain *domain)
static int blocking_domain_set_dev_pasid(struct iommu_domain *domain,
struct device *dev, ioasid_t pasid,
struct iommu_domain *old)
{
struct device_domain_info *info = dev_iommu_priv_get(dev);
intel_pasid_tear_down_entry(info->iommu, dev, pasid, false);
domain_remove_dev_pasid(domain, dev, pasid);
domain_remove_dev_pasid(old, dev, pasid);
return 0;
}
struct dev_pasid_info *
@ -4478,7 +4486,6 @@ const struct iommu_ops intel_iommu_ops = {
.dev_disable_feat = intel_iommu_dev_disable_feat,
.is_attach_deferred = intel_iommu_is_attach_deferred,
.def_domain_type = device_def_domain_type,
.remove_dev_pasid = intel_iommu_remove_dev_pasid,
.pgsize_bitmap = SZ_4K,
.page_response = intel_iommu_page_response,
.default_domain_ops = &(const struct iommu_domain_ops) {