linux-kernel - [RFC PATCH v1 04/15] iommu: Add DOMAIN_ATTR

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Message-Id: <1551469117-3404-5-git-send-email-jcrouse@codeaurora.org>
Date:   Fri,  1 Mar 2019 12:38:26 -0700
From:   Jordan Crouse <jcrouse@...eaurora.org>
To:     freedreno@...ts.freedesktop.org
Cc:     jean-philippe.brucker@....com, linux-arm-msm@...r.kernel.org,
        dianders@...omimum.org, hoegsberg@...gle.com,
        baolu.lu@...ux.intel.com, iommu@...ts.linux-foundation.org,
        Joerg Roedel <joro@...tes.org>, linux-kernel@...r.kernel.org
Subject: [RFC PATCH v1 04/15] iommu: Add DOMAIN_ATTR_PTBASE

Add an attribute to return the base address of the pagetable. This is used
by auxiliary domains from arm-smmu to return the address of the pagetable
to the leaf driver so that it can set the appropriate pagetable through
it's own means.

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 3f2250b..dc60a71 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -126,6 +126,7 @@ enum iommu_attr {
 	DOMAIN_ATTR_NESTING,	/* two stages of translation */
 	DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE,
 	DOMAIN_ATTR_SPLIT_TABLES,
+	DOMAIN_ATTR_PTBASE,
 	DOMAIN_ATTR_MAX,
 };
 
-- 
2.7.4