linux-kernel - [PATCH v12 04/13] iommu: Add a domain attribute to get/set a pagetable configuration

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Message-Id: <20200810222657.1841322-5-jcrouse@codeaurora.org>
Date:   Mon, 10 Aug 2020 16:26:48 -0600
From:   Jordan Crouse <jcrouse@...eaurora.org>
To:     linux-arm-msm@...r.kernel.org
Cc:     Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        iommu@...ts.linux-foundation.org, freedreno@...ts.freedesktop.org,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Joerg Roedel <joro@...tes.org>, linux-kernel@...r.kernel.org
Subject: [PATCH v12 04/13] iommu: Add a domain attribute to get/set a pagetable configuration

Add domain attribute DOMAIN_ATTR_PGTABLE_CFG. This will be used by
arm-smmu to share the current pagetable configuration with the
leaf driver and to allow the leaf driver to set up a new pagetable
configuration under certain circumstances.

Signed-off-by: Jordan Crouse <jcrouse@...eaurora.org>
---

 include/linux/iommu.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index fee209efb756..995ab8c47ef2 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -118,6 +118,7 @@ enum iommu_attr {
 	DOMAIN_ATTR_FSL_PAMUV1,
 	DOMAIN_ATTR_NESTING,	/* two stages of translation */
 	DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE,
+	DOMAIN_ATTR_PGTABLE_CFG,
 	DOMAIN_ATTR_MAX,
 };
 
-- 
2.25.1