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iommu/vt-d: Add iommu_domain_did() to get did

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domain_id_iommu() does not support SVA type and identity type domains.
Add iommu_domain_did() to support all domain types.

Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20241107122234.7424-7-yi.l.liu@intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Yi Liu 2024-11-08 10:13:57 +08:00 committed by Joerg Roedel
parent d93cf86cc6
commit a1deee90a2
2 changed files with 16 additions and 7 deletions
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16
drivers/iommu/intel/iommu.h
View File

@ -806,6 +806,13 @@ static inline struct dmar_domain *to_dmar_domain(struct iommu_domain *dom)
return container_of(dom, struct dmar_domain, domain);
}
/*
* Domain ID reserved for pasid entries programmed for first-level
* only and pass-through transfer modes.
*/
#define FLPT_DEFAULT_DID 1
#define NUM_RESERVED_DID 2
/* Retrieve the domain ID which has allocated to the domain */
static inline u16
domain_id_iommu(struct dmar_domain *domain, struct intel_iommu *iommu)
@ -816,6 +823,15 @@ domain_id_iommu(struct dmar_domain *domain, struct intel_iommu *iommu)
return info->did;
}
static inline u16
iommu_domain_did(struct iommu_domain *domain, struct intel_iommu *iommu)
{
if (domain->type == IOMMU_DOMAIN_SVA ||
domain->type == IOMMU_DOMAIN_IDENTITY)
return FLPT_DEFAULT_DID;
return domain_id_iommu(to_dmar_domain(domain), iommu);
}
/*
* 0: readable
* 1: writable

7
drivers/iommu/intel/pasid.h
View File

@ -22,13 +22,6 @@
#define is_pasid_enabled(entry) (((entry)->lo >> 3) & 0x1)
#define get_pasid_dir_size(entry) (1 << ((((entry)->lo >> 9) & 0x7) + 7))
/*
* Domain ID reserved for pasid entries programmed for first-level
* only and pass-through transfer modes.
*/
#define FLPT_DEFAULT_DID 1
#define NUM_RESERVED_DID 2
#define PASID_FLAG_NESTED BIT(1)
#define PASID_FLAG_PAGE_SNOOP BIT(2)