diff options
| author | Lu Baolu | 2019-03-25 02:30:32 +0100 |
|---|---|---|
| committer | Joerg Roedel | 2019-04-11 17:15:48 +0200 |
| commit | 67b8e02b5e76159a4f94f85bee370af1d9f442f9 (patch) | |
| tree | 724afa192d654b7fb0acc37ca6b677423317a53d /include/linux/intel-iommu.h | |
| parent | iommu/vt-d: Move common code out of iommu_attch_device() (diff) | |
| download | kernel-qcow2-linux-67b8e02b5e76159a4f94f85bee370af1d9f442f9.tar.gz kernel-qcow2-linux-67b8e02b5e76159a4f94f85bee370af1d9f442f9.tar.xz kernel-qcow2-linux-67b8e02b5e76159a4f94f85bee370af1d9f442f9.zip | |
iommu/vt-d: Aux-domain specific domain attach/detach
When multiple domains per device has been enabled by the
device driver, the device will tag the default PASID for
the domain to all DMA traffics out of the subset of this
device; and the IOMMU should translate the DMA requests
in PASID granularity.
This adds the intel_iommu_aux_attach/detach_device() ops
to support managing PASID granular translation structures
when the device driver has enabled multiple domains per
device.
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Sanjay Kumar <sanjay.k.kumar@intel.com>
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/intel-iommu.h')
| -rw-r--r-- | include/linux/intel-iommu.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 4f0745479b6d..6925a18a5ca3 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -489,9 +489,11 @@ struct dmar_domain { /* Domain ids per IOMMU. Use u16 since * domain ids are 16 bit wide according * to VT-d spec, section 9.3 */ + unsigned int auxd_refcnt; /* Refcount of auxiliary attaching */ bool has_iotlb_device; struct list_head devices; /* all devices' list */ + struct list_head auxd; /* link to device's auxiliary list */ struct iova_domain iovad; /* iova's that belong to this domain */ struct dma_pte *pgd; /* virtual address */ @@ -510,6 +512,11 @@ struct dmar_domain { 2 == 1GiB, 3 == 512GiB, 4 == 1TiB */ u64 max_addr; /* maximum mapped address */ + int default_pasid; /* + * The default pasid used for non-SVM + * traffic on mediated devices. + */ + struct iommu_domain domain; /* generic domain data structure for iommu core */ }; @@ -559,6 +566,9 @@ struct device_domain_info { struct list_head link; /* link to domain siblings */ struct list_head global; /* link to global list */ struct list_head table; /* link to pasid table */ + struct list_head auxiliary_domains; /* auxiliary domains + * attached to this device + */ u8 bus; /* PCI bus number */ u8 devfn; /* PCI devfn number */ u16 pfsid; /* SRIOV physical function source ID */ |