diff mbox series

[v5,4/5] iommu/arm-smmu-v3: add support for non-strict mode

Message ID 1534296510-12888-5-git-send-email-thunder.leizhen@huawei.com
State New
Headers show
Series add non-strict mode support for arm-smmu-v3 | expand

Commit Message

Zhen Lei Aug. 15, 2018, 1:28 a.m. UTC 
Dynamically choose strict or non-strict mode for page table config based
on the iommu domain type.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>

---
 drivers/iommu/arm-smmu-v3.c | 5 +++++
 1 file changed, 5 insertions(+)

--
1.8.3
diff mbox series

Patch

diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 4402187..61eb7ec 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -1622,6 +1622,11 @@  static int arm_smmu_domain_finalise(struct iommu_domain *domain)
 	if (smmu->features & ARM_SMMU_FEAT_COHERENCY)
 		pgtbl_cfg.quirks = IO_PGTABLE_QUIRK_NO_DMA;

+	if (domain->type == IOMMU_DOMAIN_DMA) {
+		domain->non_strict = true;
+		pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT;
+	}
+
 	pgtbl_ops = alloc_io_pgtable_ops(fmt, &pgtbl_cfg, smmu_domain);
 	if (!pgtbl_ops)
 		return -ENOMEM;