*
* Returns: fwnode_handle pointer on success, NULL on failure
*/
-static inline
-struct fwnode_handle *iort_get_fwnode(struct acpi_iort_node *node)
+static inline struct fwnode_handle *iort_get_fwnode(
+ struct acpi_iort_node *node)
{
struct iort_fwnode *curr;
struct fwnode_handle *fwnode = NULL;
spin_unlock(&iort_fwnode_lock);
}
+/**
+ * iort_get_iort_node() - Retrieve iort_node associated with an fwnode
+ *
+ * @fwnode: fwnode associated with device to be looked-up
+ *
+ * Returns: iort_node pointer on success, NULL on failure
+ */
+static inline struct acpi_iort_node *iort_get_iort_node(
+ struct fwnode_handle *fwnode)
+{
+ struct iort_fwnode *curr;
+ struct acpi_iort_node *iort_node = NULL;
+
+ spin_lock(&iort_fwnode_lock);
+ list_for_each_entry(curr, &iort_fwnode_list, list) {
+ if (curr->fwnode == fwnode) {
+ iort_node = curr->iort_node;
+ break;
+ }
+ }
+ spin_unlock(&iort_fwnode_lock);
+
+ return iort_node;
+}
+
typedef acpi_status (*iort_find_node_callback)
(struct acpi_iort_node *node, void *context);
return 0;
}
-static
-struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node,
- u32 *id_out, int index)
+static struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node,
+ u32 *id_out, int index)
{
struct acpi_iort_node *parent;
struct acpi_iort_id_mapping *map;
if (map->flags & ACPI_IORT_ID_SINGLE_MAPPING) {
if (node->type == ACPI_IORT_NODE_NAMED_COMPONENT ||
- node->type == ACPI_IORT_NODE_PCI_ROOT_COMPLEX) {
+ node->type == ACPI_IORT_NODE_PCI_ROOT_COMPLEX ||
+ node->type == ACPI_IORT_NODE_SMMU_V3) {
*id_out = map->output_base;
return parent;
}
return NULL;
}
+#if (ACPI_CA_VERSION > 0x20170929)
+static int iort_get_id_mapping_index(struct acpi_iort_node *node)
+{
+ struct acpi_iort_smmu_v3 *smmu;
+
+ switch (node->type) {
+ case ACPI_IORT_NODE_SMMU_V3:
+ /*
+ * SMMUv3 dev ID mapping index was introduced in revision 1
+ * table, not available in revision 0
+ */
+ if (node->revision < 1)
+ return -EINVAL;
+
+ smmu = (struct acpi_iort_smmu_v3 *)node->node_data;
+ /*
+ * ID mapping index is only ignored if all interrupts are
+ * GSIV based
+ */
+ if (smmu->event_gsiv && smmu->pri_gsiv && smmu->gerr_gsiv
+ && smmu->sync_gsiv)
+ return -EINVAL;
+
+ if (smmu->id_mapping_index >= node->mapping_count) {
+ pr_err(FW_BUG "[node %p type %d] ID mapping index overflows valid mappings\n",
+ node, node->type);
+ return -EINVAL;
+ }
+
+ return smmu->id_mapping_index;
+ default:
+ return -EINVAL;
+ }
+}
+#else
+static inline int iort_get_id_mapping_index(struct acpi_iort_node *node)
+{
+ return -EINVAL;
+}
+#endif
+
static struct acpi_iort_node *iort_node_map_id(struct acpi_iort_node *node,
u32 id_in, u32 *id_out,
u8 type_mask)
/* Parse the ID mapping tree to find specified node type */
while (node) {
struct acpi_iort_id_mapping *map;
- int i;
+ int i, index;
if (IORT_TYPE_MASK(node->type) & type_mask) {
if (id_out)
goto fail_map;
}
+ /*
+ * Get the special ID mapping index (if any) and skip its
+ * associated ID map to prevent erroneous multi-stage
+ * IORT ID translations.
+ */
+ index = iort_get_id_mapping_index(node);
+
/* Do the ID translation */
for (i = 0; i < node->mapping_count; i++, map++) {
+ /* if it is special mapping index, skip it */
+ if (i == index)
+ continue;
+
if (!iort_id_map(map, node->type, id, &id))
break;
}
return NULL;
}
-static
-struct acpi_iort_node *iort_node_map_platform_id(struct acpi_iort_node *node,
- u32 *id_out, u8 type_mask,
- int index)
+static struct acpi_iort_node *iort_node_map_platform_id(
+ struct acpi_iort_node *node, u32 *id_out, u8 type_mask,
+ int index)
{
struct acpi_iort_node *parent;
u32 id;
{
struct pci_bus *pbus;
- if (!dev_is_pci(dev))
+ if (!dev_is_pci(dev)) {
+ struct acpi_iort_node *node;
+ /*
+ * scan iort_fwnode_list to see if it's an iort platform
+ * device (such as SMMU, PMCG),its iort node already cached
+ * and associated with fwnode when iort platform devices
+ * were initialized.
+ */
+ node = iort_get_iort_node(dev->fwnode);
+ if (node)
+ return node;
+
+ /*
+ * if not, then it should be a platform device defined in
+ * DSDT/SSDT (with Named Component node in IORT)
+ */
return iort_scan_node(ACPI_IORT_NODE_NAMED_COMPONENT,
iort_match_node_callback, dev);
+ }
/* Find a PCI root bus */
pbus = to_pci_dev(dev)->bus;
*/
int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id)
{
- int i;
+ int i, index;
struct acpi_iort_node *node;
node = iort_find_dev_node(dev);
if (!node)
return -ENODEV;
- for (i = 0; i < node->mapping_count; i++) {
- if (iort_node_map_platform_id(node, dev_id, IORT_MSI_TYPE, i))
+ index = iort_get_id_mapping_index(node);
+ /* if there is a valid index, go get the dev_id directly */
+ if (index >= 0) {
+ if (iort_node_get_id(node, dev_id, index))
return 0;
+ } else {
+ for (i = 0; i < node->mapping_count; i++) {
+ if (iort_node_map_platform_id(node, dev_id,
+ IORT_MSI_TYPE, i))
+ return 0;
+ }
}
return -ENODEV;
return irq_find_matching_fwnode(handle, DOMAIN_BUS_PCI_MSI);
}
+static void iort_set_device_domain(struct device *dev,
+ struct acpi_iort_node *node)
+{
+ struct acpi_iort_its_group *its;
+ struct acpi_iort_node *msi_parent;
+ struct acpi_iort_id_mapping *map;
+ struct fwnode_handle *iort_fwnode;
+ struct irq_domain *domain;
+ int index;
+
+ index = iort_get_id_mapping_index(node);
+ if (index < 0)
+ return;
+
+ map = ACPI_ADD_PTR(struct acpi_iort_id_mapping, node,
+ node->mapping_offset + index * sizeof(*map));
+
+ /* Firmware bug! */
+ if (!map->output_reference ||
+ !(map->flags & ACPI_IORT_ID_SINGLE_MAPPING)) {
+ pr_err(FW_BUG "[node %p type %d] Invalid MSI mapping\n",
+ node, node->type);
+ return;
+ }
+
+ msi_parent = ACPI_ADD_PTR(struct acpi_iort_node, iort_table,
+ map->output_reference);
+
+ if (!msi_parent || msi_parent->type != ACPI_IORT_NODE_ITS_GROUP)
+ return;
+
+ /* Move to ITS specific data */
+ its = (struct acpi_iort_its_group *)msi_parent->node_data;
+
+ iort_fwnode = iort_find_domain_token(its->identifiers[0]);
+ if (!iort_fwnode)
+ return;
+
+ domain = irq_find_matching_fwnode(iort_fwnode, DOMAIN_BUS_PLATFORM_MSI);
+ if (domain)
+ dev_set_msi_domain(dev, domain);
+}
+
/**
* iort_get_platform_device_domain() - Find MSI domain related to a
* platform device
}
#ifdef CONFIG_IOMMU_API
-static inline
-const struct iommu_ops *iort_fwspec_iommu_ops(struct iommu_fwspec *fwspec)
+static inline const struct iommu_ops *iort_fwspec_iommu_ops(
+ struct iommu_fwspec *fwspec)
{
return (fwspec && fwspec->ops) ? fwspec->ops : NULL;
}
-static inline
-int iort_add_device_replay(const struct iommu_ops *ops, struct device *dev)
+static inline int iort_add_device_replay(const struct iommu_ops *ops,
+ struct device *dev)
{
int err = 0;
return err;
}
#else
-static inline
-const struct iommu_ops *iort_fwspec_iommu_ops(struct iommu_fwspec *fwspec)
+static inline const struct iommu_ops *iort_fwspec_iommu_ops(
+ struct iommu_fwspec *fwspec)
{ return NULL; }
-static inline
-int iort_add_device_replay(const struct iommu_ops *ops, struct device *dev)
+static inline int iort_add_device_replay(const struct iommu_ops *ops,
+ struct device *dev)
{ return 0; }
#endif
return smmu->flags & ACPI_IORT_SMMU_V3_COHACC_OVERRIDE;
}
-#if defined(CONFIG_ACPI_NUMA) && defined(ACPI_IORT_SMMU_V3_PXM_VALID)
+#if defined(CONFIG_ACPI_NUMA)
/*
* set numa proximity domain for smmuv3 device
*/
return smmu->flags & ACPI_IORT_SMMU_COHERENT_WALK;
}
-struct iort_iommu_config {
+struct iort_dev_config {
const char *name;
- int (*iommu_init)(struct acpi_iort_node *node);
- bool (*iommu_is_coherent)(struct acpi_iort_node *node);
- int (*iommu_count_resources)(struct acpi_iort_node *node);
- void (*iommu_init_resources)(struct resource *res,
+ int (*dev_init)(struct acpi_iort_node *node);
+ bool (*dev_is_coherent)(struct acpi_iort_node *node);
+ int (*dev_count_resources)(struct acpi_iort_node *node);
+ void (*dev_init_resources)(struct resource *res,
struct acpi_iort_node *node);
- void (*iommu_set_proximity)(struct device *dev,
+ void (*dev_set_proximity)(struct device *dev,
struct acpi_iort_node *node);
};
-static const struct iort_iommu_config iort_arm_smmu_v3_cfg __initconst = {
+static const struct iort_dev_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_set_proximity = arm_smmu_v3_set_proximity,
+ .dev_is_coherent = arm_smmu_v3_is_coherent,
+ .dev_count_resources = arm_smmu_v3_count_resources,
+ .dev_init_resources = arm_smmu_v3_init_resources,
+ .dev_set_proximity = arm_smmu_v3_set_proximity,
};
-static const struct iort_iommu_config iort_arm_smmu_cfg __initconst = {
+static const struct iort_dev_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
+ .dev_is_coherent = arm_smmu_is_coherent,
+ .dev_count_resources = arm_smmu_count_resources,
+ .dev_init_resources = arm_smmu_init_resources
};
-static __init
-const struct iort_iommu_config *iort_get_iommu_cfg(struct acpi_iort_node *node)
+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:
}
/**
- * 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) {
goto dev_put;
}
- ops->iommu_init_resources(r, node);
+ ops->dev_init_resources(r, node);
ret = platform_device_add_resources(pdev, r, count);
/*
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;
struct fwnode_handle *fwnode;
int i, ret;
bool acs_enabled = false;
+ const struct iort_dev_config *ops;
/*
* iort_table and iort both point to the start of IORT table, but
if (!acs_enabled)
acs_enabled = iort_enable_acs(iort_node);
- 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);
projects / linux-2.6-microblaze.git / blobdiff