diff options
Diffstat (limited to 'drivers/iommu/intel-pasid.h')
| -rw-r--r-- | drivers/iommu/intel-pasid.h | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/drivers/iommu/intel-pasid.h b/drivers/iommu/intel-pasid.h index 1fb5e12b029a..23537b3f34e3 100644 --- a/drivers/iommu/intel-pasid.h +++ b/drivers/iommu/intel-pasid.h @@ -10,13 +10,37 @@ #ifndef __INTEL_PASID_H #define __INTEL_PASID_H +#define PASID_RID2PASID 0x0 #define PASID_MIN 0x1 -#define PASID_MAX 0x20000 +#define PASID_MAX 0x100000 +#define PASID_PTE_MASK 0x3F +#define PASID_PTE_PRESENT 1 +#define PDE_PFN_MASK PAGE_MASK +#define PASID_PDE_SHIFT 6 +#define MAX_NR_PASID_BITS 20 -struct pasid_entry { +/* + * Domain ID reserved for pasid entries programmed for first-level + * only and pass-through transfer modes. + */ +#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; }; +struct pasid_entry { + u64 val[8]; +}; + /* The representative of a PASID table */ struct pasid_table { void *table; /* pasid table pointer */ @@ -34,6 +58,16 @@ void intel_pasid_free_table(struct device *dev); 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); +int intel_pasid_setup_pass_through(struct intel_iommu *iommu, + struct dmar_domain *domain, + struct device *dev, int pasid); +void intel_pasid_tear_down_entry(struct intel_iommu *iommu, + struct device *dev, int pasid); #endif /* __INTEL_PASID_H */ |