From: Jordan Crouse <jcrouse@codeaurora.org>
To: freedreno@lists.freedesktop.org
Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
iommu@lists.linux-foundation.org, Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org,
Robin Murphy <robin.murphy@arm.com>
Subject: [PATCH 5/7] iommu/arm-smmu: Support DOMAIN_ATTR_SPLIT_TABLES
Date: Tue, 20 Aug 2019 13:06:30 -0600 [thread overview]
Message-ID: <1566327992-362-6-git-send-email-jcrouse@codeaurora.org> (raw)
In-Reply-To: <1566327992-362-1-git-send-email-jcrouse@codeaurora.org>
Support the DOMAIN_ATTR_SPLIT_TABLES attribute to let the leaf driver
know if split pagetables are enabled for the domain.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
drivers/iommu/arm-smmu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 3f41cf7..6a512ff 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1442,6 +1442,9 @@ static int arm_smmu_domain_get_attr(struct iommu_domain *domain,
case DOMAIN_ATTR_NESTING:
*(int *)data = (smmu_domain->stage == ARM_SMMU_DOMAIN_NESTED);
return 0;
+ case DOMAIN_ATTR_SPLIT_TABLES:
+ *(int *)data = !!(smmu_domain->split_pagetables);
+ return 0;
default:
return -ENODEV;
}
--
2.7.4
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iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2019-08-20 19:07 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 19:06 [PATCH 0/7] iommu/arm-smmu: Split pagetable support for Adreno GPUs Jordan Crouse
2019-08-20 19:06 ` [PATCH 1/7] iommu/arm-smmu: Support split pagetables Jordan Crouse
2019-08-20 19:06 ` [PATCH 2/7] dt-bindings: arm-smmu: Add Adreno GPU variant Jordan Crouse
2019-08-27 17:13 ` Rob Herring
2019-09-17 18:56 ` Stephen Boyd
2019-08-20 19:06 ` [PATCH 3/7] iommu/arm-smmu: Add a SMMU variant for the Adreno GPU Jordan Crouse
2019-09-17 18:55 ` Stephen Boyd
2019-08-20 19:06 ` [PATCH 4/7] iommu: Add DOMAIN_ATTR_SPLIT_TABLES Jordan Crouse
2019-08-20 19:06 ` Jordan Crouse [this message]
2019-09-17 17:20 ` [PATCH 5/7] iommu/arm-smmu: Support DOMAIN_ATTR_SPLIT_TABLES Will Deacon
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