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| author | Joerg Roedel <jroedel@suse.de> | 2015-07-21 11:00:56 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-08-12 17:23:33 +0300 |
| commit | 9452d5bfe5c3df6befb89835d2c44920e03bd390 (patch) | |
| tree | 1092145fc6a922ae8cb540c504355347adb82173 /drivers/iommu | |
| parent | c0e8a6c8033e205835fa5e67db7ab4589d2491b2 (diff) | |
| download | linux-9452d5bfe5c3df6befb89835d2c44920e03bd390.tar.xz | |
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>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index bf92cd1805c2..1c2d6126e5fd 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -569,6 +569,17 @@ __setup("intel_iommu=", intel_iommu_setup); static struct kmem_cache *iommu_domain_cache; static struct kmem_cache *iommu_devinfo_cache; +static struct dmar_domain* get_iommu_domain(struct intel_iommu *iommu, u16 did) +{ + return iommu->domains[did]; +} + +static void set_iommu_domain(struct intel_iommu *iommu, u16 did, + struct dmar_domain *domain) +{ + iommu->domains[did] = domain; +} + static inline void *alloc_pgtable_page(int node) { struct page *page; @@ -1463,7 +1474,8 @@ static void iommu_flush_iotlb_psi(struct intel_iommu *iommu, u16 did, * flush. However, device IOTLB doesn't need to be flushed in this case. */ if (!cap_caching_mode(iommu->cap) || !map) - iommu_flush_dev_iotlb(iommu->domains[did], addr, mask); + iommu_flush_dev_iotlb(get_iommu_domain(iommu, did), + addr, mask); } static void iommu_disable_protect_mem_regions(struct intel_iommu *iommu) @@ -1573,7 +1585,7 @@ static void disable_dmar_iommu(struct intel_iommu *iommu) if (i == 0) continue; - domain = iommu->domains[i]; + domain = get_iommu_domain(iommu, i); clear_bit(i, iommu->domain_ids); if (domain_detach_iommu(domain, iommu) == 0 && !domain_type_is_vm(domain)) @@ -1631,7 +1643,7 @@ static int __iommu_attach_domain(struct dmar_domain *domain, num = find_first_zero_bit(iommu->domain_ids, ndomains); if (num < ndomains) { set_bit(num, iommu->domain_ids); - iommu->domains[num] = domain; + set_iommu_domain(iommu, num, domain); domain->iommu_did[iommu->seq_id] = num; } else { num = -ENOSPC; @@ -1681,7 +1693,7 @@ static void iommu_detach_domain(struct dmar_domain *domain, return; clear_bit(num, iommu->domain_ids); - iommu->domains[num] = NULL; + set_iommu_domain(iommu, num, NULL); spin_unlock_irqrestore(&iommu->lock, flags); } @@ -4852,7 +4864,7 @@ static size_t intel_iommu_unmap(struct iommu_domain *domain, */ ndomains = cap_ndoms(iommu->cap); for_each_set_bit(num, iommu->domain_ids, ndomains) { - if (iommu->domains[num] == dmar_domain) + if (get_iommu_domain(iommu, num) == dmar_domain) iommu_flush_iotlb_psi(iommu, num, start_pfn, npages, !freelist, 0); } |