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Diffstat (limited to 'arch/powerpc/kernel/pci_dn.c')
-rw-r--r--arch/powerpc/kernel/pci_dn.c66
1 files changed, 51 insertions, 15 deletions
diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c
index 38102cb9b..ecdccce78 100644
--- a/arch/powerpc/kernel/pci_dn.c
+++ b/arch/powerpc/kernel/pci_dn.c
@@ -282,13 +282,9 @@ void remove_dev_pci_data(struct pci_dev *pdev)
#endif /* CONFIG_PCI_IOV */
}
-/*
- * Traverse_func that inits the PCI fields of the device node.
- * NOTE: this *must* be done before read/write config to the device.
- */
-void *update_dn_pci_info(struct device_node *dn, void *data)
+struct pci_dn *pci_add_device_node_info(struct pci_controller *hose,
+ struct device_node *dn)
{
- struct pci_controller *phb = data;
const __be32 *type = of_get_property(dn, "ibm,pci-config-space-type", NULL);
const __be32 *regs;
struct device_node *parent;
@@ -299,7 +295,7 @@ void *update_dn_pci_info(struct device_node *dn, void *data)
return NULL;
dn->data = pdn;
pdn->node = dn;
- pdn->phb = phb;
+ pdn->phb = hose;
#ifdef CONFIG_PPC_POWERNV
pdn->pe_number = IODA_INVALID_PE;
#endif
@@ -331,8 +327,32 @@ void *update_dn_pci_info(struct device_node *dn, void *data)
if (pdn->parent)
list_add_tail(&pdn->list, &pdn->parent->child_list);
- return NULL;
+ return pdn;
}
+EXPORT_SYMBOL_GPL(pci_add_device_node_info);
+
+void pci_remove_device_node_info(struct device_node *dn)
+{
+ struct pci_dn *pdn = dn ? PCI_DN(dn) : NULL;
+#ifdef CONFIG_EEH
+ struct eeh_dev *edev = pdn_to_eeh_dev(pdn);
+
+ if (edev)
+ edev->pdn = NULL;
+#endif
+
+ if (!pdn)
+ return;
+
+ WARN_ON(!list_empty(&pdn->child_list));
+ list_del(&pdn->list);
+ if (pdn->parent)
+ of_node_put(pdn->parent->node);
+
+ dn->data = NULL;
+ kfree(pdn);
+}
+EXPORT_SYMBOL_GPL(pci_remove_device_node_info);
/*
* Traverse a device tree stopping each PCI device in the tree.
@@ -352,8 +372,9 @@ void *update_dn_pci_info(struct device_node *dn, void *data)
* one of these nodes we also assume its siblings are non-pci for
* performance.
*/
-void *traverse_pci_devices(struct device_node *start, traverse_func pre,
- void *data)
+void *pci_traverse_device_nodes(struct device_node *start,
+ void *(*fn)(struct device_node *, void *),
+ void *data)
{
struct device_node *dn, *nextdn;
void *ret;
@@ -368,8 +389,11 @@ void *traverse_pci_devices(struct device_node *start, traverse_func pre,
if (classp)
class = of_read_number(classp, 1);
- if (pre && ((ret = pre(dn, data)) != NULL))
- return ret;
+ if (fn) {
+ ret = fn(dn, data);
+ if (ret)
+ return ret;
+ }
/* If we are a PCI bridge, go down */
if (dn->child && ((class >> 8) == PCI_CLASS_BRIDGE_PCI ||
@@ -391,6 +415,7 @@ void *traverse_pci_devices(struct device_node *start, traverse_func pre,
}
return NULL;
}
+EXPORT_SYMBOL_GPL(pci_traverse_device_nodes);
static struct pci_dn *pci_dn_next_one(struct pci_dn *root,
struct pci_dn *pdn)
@@ -432,6 +457,18 @@ void *traverse_pci_dn(struct pci_dn *root,
return NULL;
}
+static void *add_pdn(struct device_node *dn, void *data)
+{
+ struct pci_controller *hose = data;
+ struct pci_dn *pdn;
+
+ pdn = pci_add_device_node_info(hose, dn);
+ if (!pdn)
+ return ERR_PTR(-ENOMEM);
+
+ return NULL;
+}
+
/**
* pci_devs_phb_init_dynamic - setup pci devices under this PHB
* phb: pci-to-host bridge (top-level bridge connecting to cpu)
@@ -446,8 +483,7 @@ void pci_devs_phb_init_dynamic(struct pci_controller *phb)
struct pci_dn *pdn;
/* PHB nodes themselves must not match */
- update_dn_pci_info(dn, phb);
- pdn = dn->data;
+ pdn = pci_add_device_node_info(phb, dn);
if (pdn) {
pdn->devfn = pdn->busno = -1;
pdn->vendor_id = pdn->device_id = pdn->class_code = 0;
@@ -456,7 +492,7 @@ void pci_devs_phb_init_dynamic(struct pci_controller *phb)
}
/* Update dn->phb ptrs for new phb and children devices */
- traverse_pci_devices(dn, update_dn_pci_info, phb);
+ pci_traverse_device_nodes(dn, add_pdn, phb);
}
/**