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ACPI/IORT: numa: Add numa node mapping for smmuv3 devices 

ARM IORT specification(rev. C) has added  provision to define proximity
domain in SMMUv3 IORT table. Adding required code to parse Proximity
domain and set numa_node of smmv3 platform devices.

Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
[lorenzo.pieralisi@arm.com: update pr_info()/commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
This commit is contained in:
Ganapatrao Kulkarni 2017-08-02 10:58:25 -07:00 committed by Lorenzo Pieralisi
parent bc8648d49a
commit 5fe0ce3b9e
1 changed files with 28 additions and 1 deletions
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29
drivers/acpi/arm64/iort.c
View File

@ -915,6 +915,27 @@ static bool __init arm_smmu_v3_is_coherent(struct acpi_iort_node *node)
return smmu->flags & ACPI_IORT_SMMU_V3_COHACC_OVERRIDE;
}
#if defined(CONFIG_ACPI_NUMA) && defined(ACPI_IORT_SMMU_V3_PXM_VALID)
/*
* set numa proximity domain for smmuv3 device
*/
static void __init arm_smmu_v3_set_proximity(struct device *dev,
struct acpi_iort_node *node)
{
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("SMMU-v3[%llx] Mapped to Proximity domain %d\n",
smmu->base_address,
smmu->pxm);
}
}
#else
#define arm_smmu_v3_set_proximity NULL
#endif
static int __init arm_smmu_count_resources(struct acpi_iort_node *node)
{
struct acpi_iort_smmu *smmu;
@ -984,13 +1005,16 @@ 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 device *dev,
struct acpi_iort_node *node);
};
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 = {
@ -1035,6 +1059,9 @@ 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(&pdev->dev, node);
count = ops->iommu_count_resources(node);
r = kcalloc(count, sizeof(*r), GFP_KERNEL);