[PATCHv8 3/8] iommu/arm-smmu: Move non-strict mode to use domain_attr_io_pgtbl_cfg

Sai Prakash Ranjan saiprakash.ranjan at codeaurora.org
Tue Nov 17 14:30:42 UTC 2020


Now that we have a struct domain_attr_io_pgtbl_cfg with quirks,
use that for non_strict mode as well thereby removing the need
for more members of arm_smmu_domain in the future.

Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan at codeaurora.org>
---
 drivers/iommu/arm/arm-smmu/arm-smmu.c | 7 ++-----
 drivers/iommu/arm/arm-smmu/arm-smmu.h | 1 -
 2 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index 7b05782738e2..5f066a1b7221 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c
@@ -786,9 +786,6 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain,
 			goto out_clear_smmu;
 	}
 
-	if (smmu_domain->non_strict)
-		pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT;
-
 	if (smmu_domain->pgtbl_cfg.quirks)
 		pgtbl_cfg.quirks |= smmu_domain->pgtbl_cfg.quirks;
 
@@ -1527,7 +1524,7 @@ static int arm_smmu_domain_get_attr(struct iommu_domain *domain,
 	case IOMMU_DOMAIN_DMA:
 		switch (attr) {
 		case DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE:
-			*(int *)data = smmu_domain->non_strict;
+			*(int *)data = smmu_domain->pgtbl_cfg.quirks;
 			return 0;
 		default:
 			return -ENODEV;
@@ -1583,7 +1580,7 @@ static int arm_smmu_domain_set_attr(struct iommu_domain *domain,
 	case IOMMU_DOMAIN_DMA:
 		switch (attr) {
 		case DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE:
-			smmu_domain->non_strict = *(int *)data;
+			smmu_domain->pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT;
 			break;
 		default:
 			ret = -ENODEV;
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.h b/drivers/iommu/arm/arm-smmu/arm-smmu.h
index 18fbed376afb..caae543ea077 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.h
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.h
@@ -368,7 +368,6 @@ struct arm_smmu_domain {
 	const struct iommu_flush_ops	*flush_ops;
 	struct arm_smmu_cfg		cfg;
 	enum arm_smmu_domain_stage	stage;
-	bool				non_strict;
 	struct mutex			init_mutex; /* Protects smmu pointer */
 	spinlock_t			cb_lock; /* Serialises ATS1* ops and TLB syncs */
 	struct iommu_domain		domain;
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation



More information about the dri-devel mailing list