diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2023-08-09 20:48:00 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-08-09 17:44:39 +0200 |
| commit | 7d0c9da6c1509664d96488042bacc02308ca33b2 (patch) | |
| tree | 1bdd929f47795d6c4d29170b04996ffeb91b4a72 /drivers/iommu/intel/iommu.h | |
| parent | 37f900e7180ac67c73dcfae308625c87194025c0 (diff) | |
| download | linux-7d0c9da6c1509664d96488042bacc02308ca33b2.tar.gz linux-7d0c9da6c1509664d96488042bacc02308ca33b2.tar.bz2 linux-7d0c9da6c1509664d96488042bacc02308ca33b2.zip | |
iommu/vt-d: Add set_dev_pasid callback for dma domain
This allows the upper layers to set a domain to a PASID of a device
if the PASID feature is supported by the IOMMU hardware. The typical
use cases are, for example, kernel DMA with PASID and hardware
assisted mediated device drivers.
The attaching device and pasid information is tracked in a per-domain
list and is used for IOTLB and devTLB invalidation.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20230802212427.1497170-8-jacob.jun.pan@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel/iommu.h')
| -rw-r--r-- | drivers/iommu/intel/iommu.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/iommu/intel/iommu.h b/drivers/iommu/intel/iommu.h index 6d94a29f5d52..c18fb699c87a 100644 --- a/drivers/iommu/intel/iommu.h +++ b/drivers/iommu/intel/iommu.h @@ -595,6 +595,7 @@ struct dmar_domain { spinlock_t lock; /* Protect device tracking lists */ struct list_head devices; /* all devices' list */ + struct list_head dev_pasids; /* all attached pasids */ struct dma_pte *pgd; /* virtual address */ int gaw; /* max guest address width */ @@ -717,6 +718,12 @@ struct device_domain_info { struct pasid_table *pasid_table; /* pasid table */ }; +struct dev_pasid_info { + struct list_head link_domain; /* link to domain siblings */ + struct device *dev; + ioasid_t pasid; +}; + static inline void __iommu_flush_cache( struct intel_iommu *iommu, void *addr, int size) { |