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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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Two patches for the 4.14 release merge window:
- IORT PCI aliases detection improvement to cater for systems with complex PCI topologies that current code mishandles (R.Murphy) - IORT SMMUv3 proximity domain (ie NUMA) handling (respective ACPICA changes will be merged separately) (G. Kulkarni) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABCAAGBQJZifGYAAoJEIKLOaai0TZ/QOMP/j7riN2CZrUZlJPMvoA40QEw HyVc5lPXxrs3cmsWSBbdCLGRwpY+Q5WdqzBGJ+OxhRqHHZGZPhjy//3O7+gMPmzv CswyN99IkeR2njLSTGh3Qv00RR4Fxa8a2ojjOVlsobre9PjMxbz190KhgHHmt1jJ RSPmxqAFo3PkoeChmyVqvPP9MNN1aP/yg+nujNTR+6rbppmHKyaqNum+8GjQVHwX SmmIUptvt4w4UTYk/PlyQUSFRSXWLbflsiXsyyfzPQs7jEmcVPbez4neAEh/pX4d 8v7ybYiDzrKYSdhtz5HCIdpe9CxxSGwzos0dqiUnn/xdGQ3H5dj66SAHbZ7m5vxV 096nkW2P/BOky+gc4bhq3bnQo0jLI03thb5sgB9st9j01M9RBoT7k4CA1Lc+YSAd NCu3W59WPIAhcnoRakOJsaHrWSYrFgQHqZJvqKKN5wRRbQR5XTilqgswKZgXB9ki CERz+W0tL1/n8FEOgA+Po7rgagwz8NMTSQdb6Gi29pkKyyjvOO8PewSQTOnwvXqc wDWfIC4rpJJIaivn/hpaSFIpJGb9jbXxiV3Zr8JcNGuLO4fuyZVwhFgB+9HEkqsj qSV1k+PqqdNhrEJvmDhEnVetWaw+4BYR7gqvtDGLedaJ149FgQcjHJ6Gmk8YWZza YFjfprBTrflxxAhV1dc1 =alwx -----END PGP SIGNATURE----- Merge tag 'arm64-iort-for-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/linux into for-next/core Two patches for the 4.14 release merge window: - IORT PCI aliases detection improvement to cater for systems with complex PCI topologies that current code mishandles (R.Murphy) - IORT SMMUv3 proximity domain (ie NUMA) handling (respective ACPICA changes will be merged separately) (G. Kulkarni) * tag 'arm64-iort-for-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/linux: ACPI/IORT: numa: Add numa node mapping for smmuv3 devices ACPI/IORT: Handle PCI aliases properly for IOMMUs
This commit is contained in:
Catalin Marinas
commit
f39c3f9b10
@ -588,7 +588,8 @@ void acpi_configure_pmsi_domain(struct device *dev)
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dev_set_msi_domain(dev, msi_domain);
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}
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static int __get_pci_rid(struct pci_dev *pdev, u16 alias, void *data)
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static int __maybe_unused __get_pci_rid(struct pci_dev *pdev, u16 alias,
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void *data)
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{
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u32 *rid = data;
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@ -633,8 +634,7 @@ int iort_add_device_replay(const struct iommu_ops *ops, struct device *dev)
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{
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int err = 0;
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if (!IS_ERR_OR_NULL(ops) && ops->add_device && dev->bus &&
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!dev->iommu_group)
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if (ops->add_device && dev->bus && !dev->iommu_group)
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err = ops->add_device(dev);
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return err;
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@ -648,36 +648,49 @@ int iort_add_device_replay(const struct iommu_ops *ops, struct device *dev)
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{ return 0; }
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#endif
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static const struct iommu_ops *iort_iommu_xlate(struct device *dev,
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struct acpi_iort_node *node,
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u32 streamid)
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static int iort_iommu_xlate(struct device *dev, struct acpi_iort_node *node,
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u32 streamid)
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{
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const struct iommu_ops *ops = NULL;
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int ret = -ENODEV;
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const struct iommu_ops *ops;
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struct fwnode_handle *iort_fwnode;
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if (node) {
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iort_fwnode = iort_get_fwnode(node);
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if (!iort_fwnode)
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return NULL;
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if (!node)
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return -ENODEV;
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ops = iommu_ops_from_fwnode(iort_fwnode);
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/*
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* If the ops look-up fails, this means that either
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* the SMMU drivers have not been probed yet or that
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* the SMMU drivers are not built in the kernel;
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* Depending on whether the SMMU drivers are built-in
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* in the kernel or not, defer the IOMMU configuration
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* or just abort it.
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*/
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if (!ops)
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return iort_iommu_driver_enabled(node->type) ?
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ERR_PTR(-EPROBE_DEFER) : NULL;
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iort_fwnode = iort_get_fwnode(node);
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if (!iort_fwnode)
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return -ENODEV;
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ret = arm_smmu_iort_xlate(dev, streamid, iort_fwnode, ops);
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}
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/*
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* If the ops look-up fails, this means that either
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* the SMMU drivers have not been probed yet or that
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* the SMMU drivers are not built in the kernel;
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* Depending on whether the SMMU drivers are built-in
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* in the kernel or not, defer the IOMMU configuration
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* or just abort it.
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*/
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ops = iommu_ops_from_fwnode(iort_fwnode);
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if (!ops)
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return iort_iommu_driver_enabled(node->type) ?
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-EPROBE_DEFER : -ENODEV;
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return ret ? NULL : ops;
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return arm_smmu_iort_xlate(dev, streamid, iort_fwnode, ops);
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}
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struct iort_pci_alias_info {
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struct device *dev;
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struct acpi_iort_node *node;
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};
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static int iort_pci_iommu_init(struct pci_dev *pdev, u16 alias, void *data)
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{
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struct iort_pci_alias_info *info = data;
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struct acpi_iort_node *parent;
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u32 streamid;
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parent = iort_node_map_id(info->node, alias, &streamid,
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IORT_IOMMU_TYPE);
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return iort_iommu_xlate(info->dev, parent, streamid);
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}
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/**
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@ -713,9 +726,9 @@ void iort_set_dma_mask(struct device *dev)
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const struct iommu_ops *iort_iommu_configure(struct device *dev)
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{
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struct acpi_iort_node *node, *parent;
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const struct iommu_ops *ops = NULL;
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const struct iommu_ops *ops;
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u32 streamid = 0;
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int err;
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int err = -ENODEV;
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/*
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* If we already translated the fwspec there
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@ -727,21 +740,16 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev)
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if (dev_is_pci(dev)) {
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struct pci_bus *bus = to_pci_dev(dev)->bus;
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u32 rid;
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pci_for_each_dma_alias(to_pci_dev(dev), __get_pci_rid,
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&rid);
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struct iort_pci_alias_info info = { .dev = dev };
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node = iort_scan_node(ACPI_IORT_NODE_PCI_ROOT_COMPLEX,
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iort_match_node_callback, &bus->dev);
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if (!node)
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return NULL;
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parent = iort_node_map_id(node, rid, &streamid,
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IORT_IOMMU_TYPE);
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ops = iort_iommu_xlate(dev, parent, streamid);
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info.node = node;
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err = pci_for_each_dma_alias(to_pci_dev(dev),
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iort_pci_iommu_init, &info);
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} else {
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int i = 0;
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@ -750,31 +758,30 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev)
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if (!node)
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return NULL;
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parent = iort_node_map_platform_id(node, &streamid,
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IORT_IOMMU_TYPE, i++);
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while (parent) {
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ops = iort_iommu_xlate(dev, parent, streamid);
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if (IS_ERR_OR_NULL(ops))
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return ops;
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do {
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parent = iort_node_map_platform_id(node, &streamid,
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IORT_IOMMU_TYPE,
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i++);
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}
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if (parent)
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err = iort_iommu_xlate(dev, parent, streamid);
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} while (parent && !err);
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}
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/*
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* If we have reason to believe the IOMMU driver missed the initial
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* add_device callback for dev, replay it to get things in order.
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*/
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err = iort_add_device_replay(ops, dev);
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if (err)
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ops = ERR_PTR(err);
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if (!err) {
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ops = dev->iommu_fwspec->ops;
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err = iort_add_device_replay(ops, dev);
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}
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/* Ignore all other errors apart from EPROBE_DEFER */
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if (IS_ERR(ops) && (PTR_ERR(ops) != -EPROBE_DEFER)) {
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dev_dbg(dev, "Adding to IOMMU failed: %ld\n", PTR_ERR(ops));
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if (err == -EPROBE_DEFER) {
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ops = ERR_PTR(err);
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} else if (err) {
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dev_dbg(dev, "Adding to IOMMU failed: %d\n", err);
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ops = NULL;
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}
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@ -908,6 +915,27 @@ static bool __init arm_smmu_v3_is_coherent(struct acpi_iort_node *node)
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return smmu->flags & ACPI_IORT_SMMU_V3_COHACC_OVERRIDE;
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}
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#if defined(CONFIG_ACPI_NUMA) && defined(ACPI_IORT_SMMU_V3_PXM_VALID)
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/*
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* set numa proximity domain for smmuv3 device
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*/
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static void __init arm_smmu_v3_set_proximity(struct device *dev,
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struct acpi_iort_node *node)
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{
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struct acpi_iort_smmu_v3 *smmu;
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smmu = (struct acpi_iort_smmu_v3 *)node->node_data;
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if (smmu->flags & ACPI_IORT_SMMU_V3_PXM_VALID) {
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set_dev_node(dev, acpi_map_pxm_to_node(smmu->pxm));
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pr_info("SMMU-v3[%llx] Mapped to Proximity domain %d\n",
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smmu->base_address,
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smmu->pxm);
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}
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}
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#else
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#define arm_smmu_v3_set_proximity NULL
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#endif
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static int __init arm_smmu_count_resources(struct acpi_iort_node *node)
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{
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struct acpi_iort_smmu *smmu;
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@ -977,13 +1005,16 @@ struct iort_iommu_config {
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int (*iommu_count_resources)(struct acpi_iort_node *node);
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void (*iommu_init_resources)(struct resource *res,
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struct acpi_iort_node *node);
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void (*iommu_set_proximity)(struct device *dev,
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struct acpi_iort_node *node);
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};
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static const struct iort_iommu_config iort_arm_smmu_v3_cfg __initconst = {
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.name = "arm-smmu-v3",
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.iommu_is_coherent = arm_smmu_v3_is_coherent,
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.iommu_count_resources = arm_smmu_v3_count_resources,
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.iommu_init_resources = arm_smmu_v3_init_resources
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.iommu_init_resources = arm_smmu_v3_init_resources,
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.iommu_set_proximity = arm_smmu_v3_set_proximity,
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};
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static const struct iort_iommu_config iort_arm_smmu_cfg __initconst = {
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@ -1028,6 +1059,9 @@ static int __init iort_add_smmu_platform_device(struct acpi_iort_node *node)
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if (!pdev)
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return -ENOMEM;
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if (ops->iommu_set_proximity)
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ops->iommu_set_proximity(&pdev->dev, node);
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count = ops->iommu_count_resources(node);
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r = kcalloc(count, sizeof(*r), GFP_KERNEL);
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