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ACPI IORT updates for v4.15; patches content is logically split into
the following subseries: - Code clean-ups (A.Yadav, L.Pieralisi) - Platform devices inizialization rework in preparation for IORT PMCG handling (L.Pieralisi) - Mapping API rework to enable MSIs for IORT components as defined in IORT specification issue C (H.Guo, L.Pieralisi) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABCAAGBQJZ5L0JAAoJEIKLOaai0TZ/qnkP/jI4t1P/nFCe/C+26zsqyu87 59TGXYdeAFFKkIiPN/nvxpebC2/spaAVRE3fvO+GMUcfFCVT3kQ2fz9MbGhiw2Q7 qwOGevUMIkj/g0v6wYKIIBmvFdamXtDjVdke90EOIVA45heSlxQukpYjvZvdRlh6 vYsStaBm9gAQeNwnH2ocNl7ejYb50DZYktsJFuNi58Aw9ffbO8hY2YwZOgBLxcH+ Raf8pWr2tsKm35ePwvDLsRcl+dXqx48HNeIv2Ebo0tQLB4paVLfqaWj4xkcwIkjK xrgidVYBUI74p0iQOiRzHQiHSOiyE2IClu1ANmWryqJg/UhZFWTO8sQwMckbJZx8 a5gdnIzcWEmLLYfc5SqMYsSIOjmXOw0N+ArqclTwljIopyVMyLjaAzfgzwzrIR9C +NbEpulYhgKZWpcrkOQqKfOgKoP+tfq4c7+aBHVAQIRZ7LPWiqnxS9dlk5k/A/4d IBh0ARpeqFvpMoDVjzAiIma/UnNmxX87HZlI4DYCDJyOcV0wXyPofvqsS9OFJwUs xmCFiHlJ8NZKxnSKwUw3E+dkn4Kj0okUZReLhRQ534H9g7rDGzfZmG/cDeq2LQ2u ZqqB6infOT2Ikxd8fUNW6wMheztY4dncGI8IOZCEFtT97pTcydnrUKJfn8HdyaNG 68VWc6+wl8aXTpOf7fDj =yHFd -----END PGP SIGNATURE----- Merge tag 'acpi/iort-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/linux into aarch64/for-next/core Pull arm64 ACPI IORT updates from Lorenzo Pieralisi: - Code clean-ups (A.Yadav, L.Pieralisi) - Platform devices inizialization rework in preparation for IORT PMCG handling (L.Pieralisi) - Mapping API rework to enable MSIs for IORT components as defined in IORT specification issue C (H.Guo, L.Pieralisi) Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon
commit
0515ce0ff8
@ -199,7 +199,7 @@ static int __init gtdt_parse_timer_block(struct acpi_gtdt_timer_block *block,
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struct acpi_gtdt_timer_entry *gtdt_frame;
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if (!block->timer_count) {
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pr_err(FW_BUG "GT block present, but frame count is zero.");
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pr_err(FW_BUG "GT block present, but frame count is zero.\n");
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return -ENODEV;
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}
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@ -88,8 +88,8 @@ static inline int iort_set_fwnode(struct acpi_iort_node *iort_node,
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*
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* Returns: fwnode_handle pointer on success, NULL on failure
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*/
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static inline
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struct fwnode_handle *iort_get_fwnode(struct acpi_iort_node *node)
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static inline struct fwnode_handle *iort_get_fwnode(
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struct acpi_iort_node *node)
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{
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struct iort_fwnode *curr;
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struct fwnode_handle *fwnode = NULL;
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@ -126,6 +126,31 @@ static inline void iort_delete_fwnode(struct acpi_iort_node *node)
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spin_unlock(&iort_fwnode_lock);
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}
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/**
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* iort_get_iort_node() - Retrieve iort_node associated with an fwnode
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*
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* @fwnode: fwnode associated with device to be looked-up
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*
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* Returns: iort_node pointer on success, NULL on failure
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*/
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static inline struct acpi_iort_node *iort_get_iort_node(
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struct fwnode_handle *fwnode)
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{
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struct iort_fwnode *curr;
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struct acpi_iort_node *iort_node = NULL;
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spin_lock(&iort_fwnode_lock);
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list_for_each_entry(curr, &iort_fwnode_list, list) {
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if (curr->fwnode == fwnode) {
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iort_node = curr->iort_node;
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break;
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}
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}
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spin_unlock(&iort_fwnode_lock);
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return iort_node;
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}
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typedef acpi_status (*iort_find_node_callback)
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(struct acpi_iort_node *node, void *context);
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@ -306,9 +331,8 @@ static int iort_id_map(struct acpi_iort_id_mapping *map, u8 type, u32 rid_in,
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return 0;
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}
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static
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struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node,
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u32 *id_out, int index)
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static struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node,
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u32 *id_out, int index)
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{
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struct acpi_iort_node *parent;
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struct acpi_iort_id_mapping *map;
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@ -332,7 +356,8 @@ struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node,
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if (map->flags & ACPI_IORT_ID_SINGLE_MAPPING) {
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if (node->type == ACPI_IORT_NODE_NAMED_COMPONENT ||
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node->type == ACPI_IORT_NODE_PCI_ROOT_COMPLEX) {
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node->type == ACPI_IORT_NODE_PCI_ROOT_COMPLEX ||
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node->type == ACPI_IORT_NODE_SMMU_V3) {
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*id_out = map->output_base;
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return parent;
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}
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@ -341,6 +366,47 @@ struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node,
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return NULL;
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}
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#if (ACPI_CA_VERSION > 0x20170929)
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static int iort_get_id_mapping_index(struct acpi_iort_node *node)
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{
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struct acpi_iort_smmu_v3 *smmu;
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switch (node->type) {
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case ACPI_IORT_NODE_SMMU_V3:
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/*
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* SMMUv3 dev ID mapping index was introduced in revision 1
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* table, not available in revision 0
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*/
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if (node->revision < 1)
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return -EINVAL;
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smmu = (struct acpi_iort_smmu_v3 *)node->node_data;
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/*
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* ID mapping index is only ignored if all interrupts are
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* GSIV based
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*/
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if (smmu->event_gsiv && smmu->pri_gsiv && smmu->gerr_gsiv
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&& smmu->sync_gsiv)
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return -EINVAL;
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if (smmu->id_mapping_index >= node->mapping_count) {
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pr_err(FW_BUG "[node %p type %d] ID mapping index overflows valid mappings\n",
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node, node->type);
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return -EINVAL;
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}
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return smmu->id_mapping_index;
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default:
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return -EINVAL;
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}
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}
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#else
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static inline int iort_get_id_mapping_index(struct acpi_iort_node *node)
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{
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return -EINVAL;
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}
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#endif
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static struct acpi_iort_node *iort_node_map_id(struct acpi_iort_node *node,
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u32 id_in, u32 *id_out,
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u8 type_mask)
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@ -350,7 +416,7 @@ static struct acpi_iort_node *iort_node_map_id(struct acpi_iort_node *node,
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/* Parse the ID mapping tree to find specified node type */
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while (node) {
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struct acpi_iort_id_mapping *map;
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int i;
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int i, index;
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if (IORT_TYPE_MASK(node->type) & type_mask) {
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if (id_out)
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@ -371,8 +437,19 @@ static struct acpi_iort_node *iort_node_map_id(struct acpi_iort_node *node,
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goto fail_map;
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}
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/*
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* Get the special ID mapping index (if any) and skip its
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* associated ID map to prevent erroneous multi-stage
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* IORT ID translations.
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*/
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index = iort_get_id_mapping_index(node);
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/* Do the ID translation */
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for (i = 0; i < node->mapping_count; i++, map++) {
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/* if it is special mapping index, skip it */
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if (i == index)
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continue;
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if (!iort_id_map(map, node->type, id, &id))
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break;
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}
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@ -392,10 +469,9 @@ fail_map:
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return NULL;
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}
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static
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struct acpi_iort_node *iort_node_map_platform_id(struct acpi_iort_node *node,
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u32 *id_out, u8 type_mask,
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int index)
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static struct acpi_iort_node *iort_node_map_platform_id(
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struct acpi_iort_node *node, u32 *id_out, u8 type_mask,
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int index)
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{
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struct acpi_iort_node *parent;
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u32 id;
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@ -424,9 +500,25 @@ static struct acpi_iort_node *iort_find_dev_node(struct device *dev)
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{
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struct pci_bus *pbus;
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if (!dev_is_pci(dev))
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if (!dev_is_pci(dev)) {
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struct acpi_iort_node *node;
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/*
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* scan iort_fwnode_list to see if it's an iort platform
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* device (such as SMMU, PMCG),its iort node already cached
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* and associated with fwnode when iort platform devices
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* were initialized.
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*/
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node = iort_get_iort_node(dev->fwnode);
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if (node)
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return node;
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/*
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* if not, then it should be a platform device defined in
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* DSDT/SSDT (with Named Component node in IORT)
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*/
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return iort_scan_node(ACPI_IORT_NODE_NAMED_COMPONENT,
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iort_match_node_callback, dev);
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}
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/* Find a PCI root bus */
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pbus = to_pci_dev(dev)->bus;
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@ -466,16 +558,24 @@ u32 iort_msi_map_rid(struct device *dev, u32 req_id)
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*/
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int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id)
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{
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int i;
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int i, index;
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struct acpi_iort_node *node;
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node = iort_find_dev_node(dev);
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if (!node)
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return -ENODEV;
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for (i = 0; i < node->mapping_count; i++) {
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if (iort_node_map_platform_id(node, dev_id, IORT_MSI_TYPE, i))
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index = iort_get_id_mapping_index(node);
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/* if there is a valid index, go get the dev_id directly */
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if (index >= 0) {
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if (iort_node_get_id(node, dev_id, index))
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return 0;
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} else {
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for (i = 0; i < node->mapping_count; i++) {
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if (iort_node_map_platform_id(node, dev_id,
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IORT_MSI_TYPE, i))
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return 0;
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}
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}
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return -ENODEV;
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@ -538,6 +638,49 @@ struct irq_domain *iort_get_device_domain(struct device *dev, u32 req_id)
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return irq_find_matching_fwnode(handle, DOMAIN_BUS_PCI_MSI);
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}
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static void iort_set_device_domain(struct device *dev,
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struct acpi_iort_node *node)
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{
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struct acpi_iort_its_group *its;
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struct acpi_iort_node *msi_parent;
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struct acpi_iort_id_mapping *map;
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struct fwnode_handle *iort_fwnode;
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struct irq_domain *domain;
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int index;
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index = iort_get_id_mapping_index(node);
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if (index < 0)
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return;
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map = ACPI_ADD_PTR(struct acpi_iort_id_mapping, node,
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node->mapping_offset + index * sizeof(*map));
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/* Firmware bug! */
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if (!map->output_reference ||
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!(map->flags & ACPI_IORT_ID_SINGLE_MAPPING)) {
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pr_err(FW_BUG "[node %p type %d] Invalid MSI mapping\n",
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node, node->type);
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return;
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}
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msi_parent = ACPI_ADD_PTR(struct acpi_iort_node, iort_table,
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map->output_reference);
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if (!msi_parent || msi_parent->type != ACPI_IORT_NODE_ITS_GROUP)
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return;
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/* Move to ITS specific data */
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its = (struct acpi_iort_its_group *)msi_parent->node_data;
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iort_fwnode = iort_find_domain_token(its->identifiers[0]);
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if (!iort_fwnode)
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return;
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domain = irq_find_matching_fwnode(iort_fwnode, DOMAIN_BUS_PLATFORM_MSI);
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if (domain)
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dev_set_msi_domain(dev, domain);
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}
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/**
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* iort_get_platform_device_domain() - Find MSI domain related to a
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* platform device
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@ -623,14 +766,14 @@ static inline bool iort_iommu_driver_enabled(u8 type)
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}
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#ifdef CONFIG_IOMMU_API
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static inline
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const struct iommu_ops *iort_fwspec_iommu_ops(struct iommu_fwspec *fwspec)
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static inline const struct iommu_ops *iort_fwspec_iommu_ops(
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struct iommu_fwspec *fwspec)
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{
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return (fwspec && fwspec->ops) ? fwspec->ops : NULL;
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}
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static inline
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int iort_add_device_replay(const struct iommu_ops *ops, struct device *dev)
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static inline int iort_add_device_replay(const struct iommu_ops *ops,
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struct device *dev)
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{
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int err = 0;
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@ -640,11 +783,11 @@ int iort_add_device_replay(const struct iommu_ops *ops, struct device *dev)
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return err;
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}
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#else
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static inline
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const struct iommu_ops *iort_fwspec_iommu_ops(struct iommu_fwspec *fwspec)
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static inline const struct iommu_ops *iort_fwspec_iommu_ops(
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struct iommu_fwspec *fwspec)
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{ return NULL; }
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static inline
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int iort_add_device_replay(const struct iommu_ops *ops, struct device *dev)
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static inline int iort_add_device_replay(const struct iommu_ops *ops,
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struct device *dev)
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{ return 0; }
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#endif
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@ -968,7 +1111,7 @@ 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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#if defined(CONFIG_ACPI_NUMA)
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/*
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* set numa proximity domain for smmuv3 device
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*/
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@ -1051,34 +1194,34 @@ static bool __init arm_smmu_is_coherent(struct acpi_iort_node *node)
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return smmu->flags & ACPI_IORT_SMMU_COHERENT_WALK;
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}
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struct iort_iommu_config {
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struct iort_dev_config {
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const char *name;
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int (*iommu_init)(struct acpi_iort_node *node);
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bool (*iommu_is_coherent)(struct acpi_iort_node *node);
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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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int (*dev_init)(struct acpi_iort_node *node);
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bool (*dev_is_coherent)(struct acpi_iort_node *node);
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int (*dev_count_resources)(struct acpi_iort_node *node);
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void (*dev_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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void (*dev_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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static const struct iort_dev_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_set_proximity = arm_smmu_v3_set_proximity,
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.dev_is_coherent = arm_smmu_v3_is_coherent,
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.dev_count_resources = arm_smmu_v3_count_resources,
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.dev_init_resources = arm_smmu_v3_init_resources,
|
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.dev_set_proximity = arm_smmu_v3_set_proximity,
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};
|
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|
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static const struct iort_iommu_config iort_arm_smmu_cfg __initconst = {
|
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static const struct iort_dev_config iort_arm_smmu_cfg __initconst = {
|
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.name = "arm-smmu",
|
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.iommu_is_coherent = arm_smmu_is_coherent,
|
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.iommu_count_resources = arm_smmu_count_resources,
|
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.iommu_init_resources = arm_smmu_init_resources
|
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.dev_is_coherent = arm_smmu_is_coherent,
|
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.dev_count_resources = arm_smmu_count_resources,
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.dev_init_resources = arm_smmu_init_resources
|
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};
|
||||
|
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static __init
|
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const struct iort_iommu_config *iort_get_iommu_cfg(struct acpi_iort_node *node)
|
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static __init const struct iort_dev_config *iort_get_dev_cfg(
|
||||
struct acpi_iort_node *node)
|
||||
{
|
||||
switch (node->type) {
|
||||
case ACPI_IORT_NODE_SMMU_V3:
|
||||
@ -1091,31 +1234,28 @@ const struct iort_iommu_config *iort_get_iommu_cfg(struct acpi_iort_node *node)
|
||||
}
|
||||
|
||||
/**
|
||||
* iort_add_smmu_platform_device() - Allocate a platform device for SMMU
|
||||
* @node: Pointer to SMMU ACPI IORT node
|
||||
* iort_add_platform_device() - Allocate a platform device for IORT node
|
||||
* @node: Pointer to device ACPI IORT node
|
||||
*
|
||||
* Returns: 0 on success, <0 failure
|
||||
*/
|
||||
static int __init iort_add_smmu_platform_device(struct acpi_iort_node *node)
|
||||
static int __init iort_add_platform_device(struct acpi_iort_node *node,
|
||||
const struct iort_dev_config *ops)
|
||||
{
|
||||
struct fwnode_handle *fwnode;
|
||||
struct platform_device *pdev;
|
||||
struct resource *r;
|
||||
enum dev_dma_attr attr;
|
||||
int ret, count;
|
||||
const struct iort_iommu_config *ops = iort_get_iommu_cfg(node);
|
||||
|
||||
if (!ops)
|
||||
return -ENODEV;
|
||||
|
||||
pdev = platform_device_alloc(ops->name, PLATFORM_DEVID_AUTO);
|
||||
if (!pdev)
|
||||
return -ENOMEM;
|
||||
|
||||
if (ops->iommu_set_proximity)
|
||||
ops->iommu_set_proximity(&pdev->dev, node);
|
||||
if (ops->dev_set_proximity)
|
||||
ops->dev_set_proximity(&pdev->dev, node);
|
||||
|
||||
count = ops->iommu_count_resources(node);
|
||||
count = ops->dev_count_resources(node);
|
||||
|
||||
r = kcalloc(count, sizeof(*r), GFP_KERNEL);
|
||||
if (!r) {
|
||||
@ -1123,7 +1263,7 @@ static int __init iort_add_smmu_platform_device(struct acpi_iort_node *node)
|
||||
goto dev_put;
|
||||
}
|
||||
|
||||
ops->iommu_init_resources(r, node);
|
||||
ops->dev_init_resources(r, node);
|
||||
|
||||
ret = platform_device_add_resources(pdev, r, count);
|
||||
/*
|
||||
@ -1158,12 +1298,14 @@ static int __init iort_add_smmu_platform_device(struct acpi_iort_node *node)
|
||||
|
||||
pdev->dev.fwnode = fwnode;
|
||||
|
||||
attr = ops->iommu_is_coherent(node) ?
|
||||
DEV_DMA_COHERENT : DEV_DMA_NON_COHERENT;
|
||||
attr = ops->dev_is_coherent && ops->dev_is_coherent(node) ?
|
||||
DEV_DMA_COHERENT : DEV_DMA_NON_COHERENT;
|
||||
|
||||
/* Configure DMA for the page table walker */
|
||||
acpi_dma_configure(&pdev->dev, attr);
|
||||
|
||||
iort_set_device_domain(&pdev->dev, node);
|
||||
|
||||
ret = platform_device_add(pdev);
|
||||
if (ret)
|
||||
goto dma_deconfigure;
|
||||
@ -1184,6 +1326,7 @@ static void __init iort_init_platform_devices(void)
|
||||
struct acpi_table_iort *iort;
|
||||
struct fwnode_handle *fwnode;
|
||||
int i, ret;
|
||||
const struct iort_dev_config *ops;
|
||||
|
||||
/*
|
||||
* iort_table and iort both point to the start of IORT table, but
|
||||
@ -1203,16 +1346,15 @@ static void __init iort_init_platform_devices(void)
|
||||
return;
|
||||
}
|
||||
|
||||
if ((iort_node->type == ACPI_IORT_NODE_SMMU) ||
|
||||
(iort_node->type == ACPI_IORT_NODE_SMMU_V3)) {
|
||||
|
||||
ops = iort_get_dev_cfg(iort_node);
|
||||
if (ops) {
|
||||
fwnode = acpi_alloc_fwnode_static();
|
||||
if (!fwnode)
|
||||
return;
|
||||
|
||||
iort_set_fwnode(iort_node, fwnode);
|
||||
|
||||
ret = iort_add_smmu_platform_device(iort_node);
|
||||
ret = iort_add_platform_device(iort_node, ops);
|
||||
if (ret) {
|
||||
iort_delete_fwnode(iort_node);
|
||||
acpi_free_fwnode_static(fwnode);
|
||||
|
||||
@ -49,8 +49,8 @@ static inline void acpi_configure_pmsi_domain(struct device *dev) { }
|
||||
/* IOMMU interface */
|
||||
static inline void iort_dma_setup(struct device *dev, u64 *dma_addr,
|
||||
u64 *size) { }
|
||||
static inline
|
||||
const struct iommu_ops *iort_iommu_configure(struct device *dev)
|
||||
static inline const struct iommu_ops *iort_iommu_configure(
|
||||
struct device *dev)
|
||||
{ return NULL; }
|
||||
#endif
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user