linux-kernel - [PATCH 6/7] iommu/tegra: Implement DOMAIN_ATTR

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Date:	Wed, 11 Jul 2012 12:49:22 +0200
From:	Joerg Roedel <joerg.roedel@....com>
To:	<iommu@...ts.linux-foundation.org>
CC:	<linux-kernel@...r.kernel.org>, Hiroshi DOYU <hdoyu@...dia.com>,
	Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 6/7] iommu/tegra: Implement DOMAIN_ATTR_GEOMETRY attribute

From: Hiroshi DOYU <hdoyu@...dia.com>

Implement the attribute for the Tegra IOMMU drivers.

Signed-off-by: Hiroshi DOYU <hdoyu@...dia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 drivers/iommu/tegra-gart.c |    5 +++++
 drivers/iommu/tegra-smmu.c |    5 +++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index 0c0a377..c16e8fc 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -165,6 +165,11 @@ static int gart_iommu_attach_dev(struct iommu_domain *domain,
 		return -EINVAL;
 	domain->priv = gart;
 
+	domain->geometry.aperture_start = gart->iovmm_base;
+	domain->geometry.aperture_end   = gart->iovmm_base +
+					gart->page_count * GART_PAGE_SIZE - 1;
+	domain->geometry.force_aperture = true;
+
 	client = devm_kzalloc(gart->dev, sizeof(*c), GFP_KERNEL);
 	if (!client)
 		return -ENOMEM;
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index ecd6790..96e73d5 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -807,6 +807,11 @@ found:
 	spin_unlock_irqrestore(&as->lock, flags);
 	domain->priv = as;
 
+	domain->geometry.aperture_start = smmu->iovmm_base;
+	domain->geometry.aperture_end   = smmu->iovmm_base +
+		smmu->page_count * SMMU_PAGE_SIZE - 1;
+	domain->geometry.force_aperture = true;
+
 	dev_dbg(smmu->dev, "smmu_as@%p\n", as);
 	return 0;
 
-- 
1.7.9.5


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