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Subject[PATCH v3 2/2] acpi/iort: numa: Add numa node mapping for smmuv3 devices
Date
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@cavium.com>
---
drivers/acpi/arm64/iort.c | 28 ++++++++++++++++++++++++++--
1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index bba2b59..e804386 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 smmuv3 device
+ */
+static void __init arm_smmu_v3_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;
@@ -951,20 +968,24 @@ struct iort_iommu_config {
int (*iommu_count_resources)(struct acpi_iort_node *node);
void (*iommu_init_resources)(struct resource *res,
struct acpi_iort_node *node);
+ void (*iommu_set_proximity)(struct acpi_iort_node *node,
+ struct device *dev);
};

static const struct iort_iommu_config iort_arm_smmu_v3_cfg __initconst = {
.name = "arm-smmu-v3",
.iommu_is_coherent = arm_smmu_v3_is_coherent,
.iommu_count_resources = arm_smmu_v3_count_resources,
- .iommu_init_resources = arm_smmu_v3_init_resources
+ .iommu_init_resources = arm_smmu_v3_init_resources,
+ .iommu_set_proximity = arm_smmu_v3_set_proximity
};

static const struct iort_iommu_config iort_arm_smmu_cfg __initconst = {
.name = "arm-smmu",
.iommu_is_coherent = arm_smmu_is_coherent,
.iommu_count_resources = arm_smmu_count_resources,
- .iommu_init_resources = arm_smmu_init_resources
+ .iommu_init_resources = arm_smmu_init_resources,
+ .iommu_set_proximity = NULL
};

static __init
@@ -1002,6 +1023,9 @@ static int __init iort_add_smmu_platform_device(struct acpi_iort_node *node)
if (!pdev)
return -ENOMEM;

+ if (ops->iommu_set_proximity)
+ ops->iommu_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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