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.
Add code to parse proximity domain in SMMUv3 IORT table to set numa node mapping for smmuv3 devices. Signed-off-by: Ganapatrao Kulkarni <[email protected]> --- This patch has dependency on header file patch [1], which is already merged to linux-pm. [1] https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/commit/?h=linux-next&id=c944230064eb65e4fa018d86779b4fd200b1d7e7 v4: - Fix compilation issue in !CONFIG_NUMA v3: - Addressed Lorenzo Pieralisi comment. v2: - Changed as per Lorenzo Pieralisi and Hanjun Guo suggestions. v1: - Initial patch drivers/acpi/arm64/iort.c | 33 +++++++++++++++++++++++++++++++-- 1 file changed, 31 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index a3215ee..c5c82c3 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -908,6 +908,28 @@ 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) && (ACPI_CA_VERSION >= 0x20170629) +/* + * 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); + } +} +#else +static void __init arm_smmu_v3_set_proximity(struct acpi_iort_node *node, + struct device *dev) { } +#endif + static int __init arm_smmu_count_resources(struct acpi_iort_node *node) { struct acpi_iort_smmu *smmu; @@ -977,20 +999,24 @@ 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 @@ -1028,6 +1054,9 @@ 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); -- 2.9.4 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
