diff options
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); |