lkml.org 
[lkml]   [2018]   [Jun]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 5/5] iommu/arm-smmu-v3: add support for non-strict mode
Date
1. Add IOMMU_CAP_NON_STRICT capability.
2. Dynamic choose strict or non-strict mode base on the iommu domain type.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
---
drivers/iommu/arm-smmu-v3.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 4402187..4a198a0 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -1440,6 +1440,8 @@ static bool arm_smmu_capable(enum iommu_cap cap)
return true;
case IOMMU_CAP_NOEXEC:
return true;
+ case IOMMU_CAP_NON_STRICT:
+ return true;
default:
return false;
}
@@ -1767,7 +1769,7 @@ static int arm_smmu_map(struct iommu_domain *domain, unsigned long iova,
if (!ops)
return 0;

- return ops->unmap(ops, iova, size);
+ return ops->unmap(ops, iova | IOMMU_DOMAIN_STRICT_MODE(domain), size);
}

static void arm_smmu_flush_iotlb_all(struct iommu_domain *domain)
@@ -1782,7 +1784,7 @@ static void arm_smmu_iotlb_sync(struct iommu_domain *domain)
{
struct arm_smmu_device *smmu = to_smmu_domain(domain)->smmu;

- if (smmu)
+ if (smmu && (IOMMU_DOMAIN_STRICT_MODE(domain) == IOMMU_STRICT))
__arm_smmu_tlb_sync(smmu);
}

--
1.8.3

\
 
 \ /
  Last update: 2018-06-10 13:09    [W:1.299 / U:0.060 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site