Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index 1836b8d..36891e7 100644
--- a/drivers/pci/of.c
+++ b/drivers/pci/of.c
@@ -15,32 +15,47 @@
#include <linux/of_pci.h>
#include "pci.h"
+#ifdef CONFIG_PCI
void pci_set_of_node(struct pci_dev *dev)
{
if (!dev->bus->dev.of_node)
return;
dev->dev.of_node = of_pci_find_child_device(dev->bus->dev.of_node,
dev->devfn);
+ if (dev->dev.of_node)
+ dev->dev.fwnode = &dev->dev.of_node->fwnode;
}
void pci_release_of_node(struct pci_dev *dev)
{
of_node_put(dev->dev.of_node);
dev->dev.of_node = NULL;
+ dev->dev.fwnode = NULL;
}
void pci_set_bus_of_node(struct pci_bus *bus)
{
- if (bus->self == NULL)
- bus->dev.of_node = pcibios_get_phb_of_node(bus);
- else
- bus->dev.of_node = of_node_get(bus->self->dev.of_node);
+ struct device_node *node;
+
+ if (bus->self == NULL) {
+ node = pcibios_get_phb_of_node(bus);
+ } else {
+ node = of_node_get(bus->self->dev.of_node);
+ if (node && of_property_read_bool(node, "external-facing"))
+ bus->self->untrusted = true;
+ }
+
+ bus->dev.of_node = node;
+
+ if (bus->dev.of_node)
+ bus->dev.fwnode = &bus->dev.of_node->fwnode;
}
void pci_release_bus_of_node(struct pci_bus *bus)
{
of_node_put(bus->dev.of_node);
bus->dev.of_node = NULL;
+ bus->dev.fwnode = NULL;
}
struct device_node * __weak pcibios_get_phb_of_node(struct pci_bus *bus)
@@ -113,7 +128,7 @@
* a fake root for all functions of a multi-function
* device we go down them as well.
*/
- if (!strcmp(node->name, "multifunc-device")) {
+ if (of_node_name_eq(node, "multifunc-device")) {
for_each_child_of_node(node, node2) {
if (__of_pci_pci_compare(node2, devfn)) {
of_node_put(node);
@@ -197,27 +212,6 @@
EXPORT_SYMBOL_GPL(of_get_pci_domain_nr);
/**
- * This function will try to find the limitation of link speed by finding
- * a property called "max-link-speed" of the given device node.
- *
- * @node: device tree node with the max link speed information
- *
- * Returns the associated max link speed from DT, or a negative value if the
- * required property is not found or is invalid.
- */
-int of_pci_get_max_link_speed(struct device_node *node)
-{
- u32 max_link_speed;
-
- if (of_property_read_u32(node, "max-link-speed", &max_link_speed) ||
- max_link_speed > 4)
- return -EINVAL;
-
- return max_link_speed;
-}
-EXPORT_SYMBOL_GPL(of_pci_get_max_link_speed);
-
-/**
* of_pci_check_probe_only - Setup probe only mode if linux,pci-probe-only
* is present and valid
*/
@@ -355,112 +349,11 @@
EXPORT_SYMBOL_GPL(devm_of_pci_get_host_bridge_resources);
#endif /* CONFIG_OF_ADDRESS */
-/**
- * of_pci_map_rid - Translate a requester ID through a downstream mapping.
- * @np: root complex device node.
- * @rid: PCI requester ID to map.
- * @map_name: property name of the map to use.
- * @map_mask_name: optional property name of the mask to use.
- * @target: optional pointer to a target device node.
- * @id_out: optional pointer to receive the translated ID.
- *
- * Given a PCI requester ID, look up the appropriate implementation-defined
- * platform ID and/or the target device which receives transactions on that
- * ID, as per the "iommu-map" and "msi-map" bindings. Either of @target or
- * @id_out may be NULL if only the other is required. If @target points to
- * a non-NULL device node pointer, only entries targeting that node will be
- * matched; if it points to a NULL value, it will receive the device node of
- * the first matching target phandle, with a reference held.
- *
- * Return: 0 on success or a standard error code on failure.
- */
-int of_pci_map_rid(struct device_node *np, u32 rid,
- const char *map_name, const char *map_mask_name,
- struct device_node **target, u32 *id_out)
-{
- u32 map_mask, masked_rid;
- int map_len;
- const __be32 *map = NULL;
-
- if (!np || !map_name || (!target && !id_out))
- return -EINVAL;
-
- map = of_get_property(np, map_name, &map_len);
- if (!map) {
- if (target)
- return -ENODEV;
- /* Otherwise, no map implies no translation */
- *id_out = rid;
- return 0;
- }
-
- if (!map_len || map_len % (4 * sizeof(*map))) {
- pr_err("%pOF: Error: Bad %s length: %d\n", np,
- map_name, map_len);
- return -EINVAL;
- }
-
- /* The default is to select all bits. */
- map_mask = 0xffffffff;
-
- /*
- * Can be overridden by "{iommu,msi}-map-mask" property.
- * If of_property_read_u32() fails, the default is used.
- */
- if (map_mask_name)
- of_property_read_u32(np, map_mask_name, &map_mask);
-
- masked_rid = map_mask & rid;
- for ( ; map_len > 0; map_len -= 4 * sizeof(*map), map += 4) {
- struct device_node *phandle_node;
- u32 rid_base = be32_to_cpup(map + 0);
- u32 phandle = be32_to_cpup(map + 1);
- u32 out_base = be32_to_cpup(map + 2);
- u32 rid_len = be32_to_cpup(map + 3);
-
- if (rid_base & ~map_mask) {
- pr_err("%pOF: Invalid %s translation - %s-mask (0x%x) ignores rid-base (0x%x)\n",
- np, map_name, map_name,
- map_mask, rid_base);
- return -EFAULT;
- }
-
- if (masked_rid < rid_base || masked_rid >= rid_base + rid_len)
- continue;
-
- phandle_node = of_find_node_by_phandle(phandle);
- if (!phandle_node)
- return -ENODEV;
-
- if (target) {
- if (*target)
- of_node_put(phandle_node);
- else
- *target = phandle_node;
-
- if (*target != phandle_node)
- continue;
- }
-
- if (id_out)
- *id_out = masked_rid - rid_base + out_base;
-
- pr_debug("%pOF: %s, using mask %08x, rid-base: %08x, out-base: %08x, length: %08x, rid: %08x -> %08x\n",
- np, map_name, map_mask, rid_base, out_base,
- rid_len, rid, masked_rid - rid_base + out_base);
- return 0;
- }
-
- pr_err("%pOF: Invalid %s translation - no match for rid 0x%x on %pOF\n",
- np, map_name, rid, target && *target ? *target : NULL);
- return -EFAULT;
-}
-
#if IS_ENABLED(CONFIG_OF_IRQ)
/**
* of_irq_parse_pci - Resolve the interrupt for a PCI device
* @pdev: the device whose interrupt is to be resolved
- * @out_irq: structure of_irq filled by this function
+ * @out_irq: structure of_phandle_args filled by this function
*
* This function resolves the PCI interrupt for a given PCI device. If a
* device-node exists for a given pci_dev, it will use normal OF tree
@@ -638,3 +531,25 @@
return err;
}
+#endif /* CONFIG_PCI */
+
+/**
+ * This function will try to find the limitation of link speed by finding
+ * a property called "max-link-speed" of the given device node.
+ *
+ * @node: device tree node with the max link speed information
+ *
+ * Returns the associated max link speed from DT, or a negative value if the
+ * required property is not found or is invalid.
+ */
+int of_pci_get_max_link_speed(struct device_node *node)
+{
+ u32 max_link_speed;
+
+ if (of_property_read_u32(node, "max-link-speed", &max_link_speed) ||
+ max_link_speed > 4)
+ return -EINVAL;
+
+ return max_link_speed;
+}
+EXPORT_SYMBOL_GPL(of_pci_get_max_link_speed);