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Date: Tue, 6 Jun 2017 16:17:45 +0530
From: Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>
To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-acpi@...r.kernel.org, iommu@...ts.linux-foundation.org
Cc: Will.Deacon@....com, lorenzo.pieralisi@....com,
hanjun.guo@...aro.org, sudeep.holla@....com, robin.murphy@....com,
lv.zheng@...el.com, joro@...tes.org, rjw@...ysocki.net,
lenb@...nel.org, jnair@...iumnetworks.com, gpkulkarni@...il.com
Subject: [PATCH v2 2/2] acpi/iort: numa: Add numa node mapping for smmuv3 devices
Add code to parse proximity domain in SMMUv3 IORT table to
set numa node mapping for smmuv3 devices.
Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>
---
drivers/acpi/arm64/iort.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index bba2b59..b4f328f 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c
@@ -882,6 +882,23 @@ static bool __init arm_smmu_v3_is_coherent(struct acpi_iort_node *node)
return smmu->flags & ACPI_IORT_SMMU_V3_COHACC_OVERRIDE;
}
+/*
+ * set numa proximity domain for smmv3 device
+ */
+static void __init iort_set_proximity(struct acpi_iort_node *node,
+ struct device *dev)
+{
+ struct acpi_iort_smmu_v3 *smmu;
+
+ smmu = (struct acpi_iort_smmu_v3 *)node->node_data;
+ if (smmu->flags & ACPI_IORT_SMMU_V3_PXM_VALID) {
+ set_dev_node(dev, acpi_map_pxm_to_node(smmu->pxm));
+ pr_info("SMMUV3[%llx] Mapped to Proximity domain %d\n",
+ smmu->base_address,
+ smmu->pxm);
+ }
+}
+
static int __init arm_smmu_count_resources(struct acpi_iort_node *node)
{
struct acpi_iort_smmu *smmu;
@@ -1002,6 +1019,9 @@ static int __init iort_add_smmu_platform_device(struct acpi_iort_node *node)
if (!pdev)
return -ENOMEM;
+ if (node->type == ACPI_IORT_NODE_SMMU_V3)
+ iort_set_proximity(node, &pdev->dev);
+
count = ops->iommu_count_resources(node);
r = kcalloc(count, sizeof(*r), GFP_KERNEL);
--
1.8.1.4
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