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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2018-12-10 04:59:04 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2018-12-11 12:45:59 +0300 |
| commit | 437f35e1cd4c8d043633bb72f4260369af68fbf7 (patch) | |
| tree | 42b5cafde59a13430b70665c99c1313c5cb4f73e /drivers/iommu/intel-pasid.h | |
| parent | 7373a8cc381978cfafa4b0285cdd935682f1b2d2 (diff) | |
| download | linux-437f35e1cd4c8d043633bb72f4260369af68fbf7.tar.xz | |
iommu/vt-d: Add first level page table interface
This adds an interface to setup the PASID entries for first
level page table translation.
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>
Reviewed-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel-pasid.h')
| -rw-r--r-- | drivers/iommu/intel-pasid.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/iommu/intel-pasid.h b/drivers/iommu/intel-pasid.h index 55bb8715329d..512c63ec8a22 100644 --- a/drivers/iommu/intel-pasid.h +++ b/drivers/iommu/intel-pasid.h @@ -25,6 +25,14 @@ */ #define FLPT_DEFAULT_DID 1 +/* + * The SUPERVISOR_MODE flag indicates a first level translation which + * can be used for access to kernel addresses. It is valid only for + * access to the kernel's static 1:1 mapping of physical memory — not + * to vmalloc or even module mappings. + */ +#define PASID_FLAG_SUPERVISOR_MODE BIT(0) + struct pasid_dir_entry { u64 val; }; @@ -51,6 +59,9 @@ struct pasid_table *intel_pasid_get_table(struct device *dev); int intel_pasid_get_dev_max_id(struct device *dev); struct pasid_entry *intel_pasid_get_entry(struct device *dev, int pasid); void intel_pasid_clear_entry(struct device *dev, int pasid); +int intel_pasid_setup_first_level(struct intel_iommu *iommu, + struct device *dev, pgd_t *pgd, + int pasid, u16 did, int flags); int intel_pasid_setup_second_level(struct intel_iommu *iommu, struct dmar_domain *domain, struct device *dev, int pasid); |