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iommu/arm-smmu: Move non-strict mode to use io_pgtable_domain_attr 

Now that we have a struct io_pgtable_domain_attr 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@codeaurora.org>
Link: https://lore.kernel.org/r/c191265f3db1f6b3e136d4057ca917666680a066.1606287059.git.saiprakash.ranjan@codeaurora.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Sai Prakash Ranjan 2020-11-25 12:30:13 +05:30 committed by Will Deacon
parent c99110a865
commit 12bc36793f
2 changed files with 9 additions and 7 deletions
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15
drivers/iommu/arm/arm-smmu/arm-smmu.c
View File

@ -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;
@ -1526,9 +1523,12 @@ static int arm_smmu_domain_get_attr(struct iommu_domain *domain,
break;
case IOMMU_DOMAIN_DMA:
switch (attr) {
case DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE:
*(int *)data = smmu_domain->non_strict;
case DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE: {
bool non_strict = smmu_domain->pgtbl_cfg.quirks &
IO_PGTABLE_QUIRK_NON_STRICT;
*(int *)data = non_strict;
return 0;
}
default:
return -ENODEV;
}
@ -1578,7 +1578,10 @@ 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;
if (*(int *)data)
smmu_domain->pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT;
else
smmu_domain->pgtbl_cfg.quirks &= ~IO_PGTABLE_QUIRK_NON_STRICT;
break;
default:
ret = -ENODEV;

1
drivers/iommu/arm/arm-smmu/arm-smmu.h
View File

@ -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;