iommu/vt-d: Add access functions for iommu->domains
This makes it easier to change the layout of the data structure later. Signed-off-by: Joerg Roedel <jroedel@suse.de>
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@ -569,6 +569,17 @@ __setup("intel_iommu=", intel_iommu_setup);
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static struct kmem_cache *iommu_domain_cache;
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static struct kmem_cache *iommu_devinfo_cache;
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static struct dmar_domain* get_iommu_domain(struct intel_iommu *iommu, u16 did)
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{
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return iommu->domains[did];
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}
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static void set_iommu_domain(struct intel_iommu *iommu, u16 did,
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struct dmar_domain *domain)
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{
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iommu->domains[did] = domain;
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}
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static inline void *alloc_pgtable_page(int node)
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{
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struct page *page;
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@ -1463,7 +1474,8 @@ static void iommu_flush_iotlb_psi(struct intel_iommu *iommu, u16 did,
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* flush. However, device IOTLB doesn't need to be flushed in this case.
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*/
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if (!cap_caching_mode(iommu->cap) || !map)
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iommu_flush_dev_iotlb(iommu->domains[did], addr, mask);
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iommu_flush_dev_iotlb(get_iommu_domain(iommu, did),
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addr, mask);
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}
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static void iommu_disable_protect_mem_regions(struct intel_iommu *iommu)
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@ -1573,7 +1585,7 @@ static void disable_dmar_iommu(struct intel_iommu *iommu)
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if (i == 0)
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continue;
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domain = iommu->domains[i];
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domain = get_iommu_domain(iommu, i);
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clear_bit(i, iommu->domain_ids);
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if (domain_detach_iommu(domain, iommu) == 0 &&
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!domain_type_is_vm(domain))
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@ -1631,7 +1643,7 @@ static int __iommu_attach_domain(struct dmar_domain *domain,
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num = find_first_zero_bit(iommu->domain_ids, ndomains);
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if (num < ndomains) {
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set_bit(num, iommu->domain_ids);
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iommu->domains[num] = domain;
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set_iommu_domain(iommu, num, domain);
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domain->iommu_did[iommu->seq_id] = num;
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} else {
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num = -ENOSPC;
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@ -1681,7 +1693,7 @@ static void iommu_detach_domain(struct dmar_domain *domain,
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return;
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clear_bit(num, iommu->domain_ids);
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iommu->domains[num] = NULL;
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set_iommu_domain(iommu, num, NULL);
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spin_unlock_irqrestore(&iommu->lock, flags);
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}
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@ -4852,7 +4864,7 @@ static size_t intel_iommu_unmap(struct iommu_domain *domain,
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*/
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ndomains = cap_ndoms(iommu->cap);
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for_each_set_bit(num, iommu->domain_ids, ndomains) {
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if (iommu->domains[num] == dmar_domain)
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if (get_iommu_domain(iommu, num) == dmar_domain)
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iommu_flush_iotlb_psi(iommu, num, start_pfn,
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npages, !freelist, 0);
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}
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