Pass the max opt iova len to init the IOVA domain, if set.
Signed-off-by: John Garry <john.ga...@huawei.com>
---
drivers/iommu/dma-iommu.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index b540b586fe37..eee9f5f87935 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -335,6 +335,8 @@ static int iommu_dma_init_domain(struct iommu_domain
*domain, dma_addr_t base,
struct iommu_dma_cookie *cookie = domain->iova_cookie;
unsigned long order, base_pfn;
struct iova_domain *iovad;
+ size_t max_opt_dma_size;
+ unsigned long iova_len = 0;
if (!cookie || cookie->type != IOMMU_DMA_IOVA_COOKIE)
return -EINVAL;
@@ -368,7 +370,16 @@ static int iommu_dma_init_domain(struct iommu_domain
*domain, dma_addr_t base,
return 0;
}
- init_iova_domain(iovad, 1UL << order, base_pfn, 0);
+
+ max_opt_dma_size = iommu_group_get_max_opt_dma_size(dev->iommu_group);
+ if (max_opt_dma_size) {
+ unsigned long shift = __ffs(1UL << order);
+
+ iova_len = max_opt_dma_size >> shift;
+ iova_len = roundup_pow_of_two(iova_len);
+ }
+
+ init_iova_domain(iovad, 1UL << order, base_pfn, iova_len);
if (!cookie->fq_domain && (!dev || !dev_is_untrusted(dev)) &&
domain->ops->flush_iotlb_all && !iommu_get_dma_strict(domain)) {
--
2.26.2
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