sparc64: If 'slot-names' property exist, create sysfs PCI slot information.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 75 insertions, 0 deletions

diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 592b03d85167..d7e1cf01dd28 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -1094,3 +1094,78 @@ static int __init pcibios_init(void)
         return 0;
 }
 subsys_initcall(pcibios_init);
+
+#ifdef CONFIG_SYSFS
+static void __devinit pci_bus_slot_names(struct device_node *node,
+                                         struct pci_bus *bus)
+{
+        const struct pci_slot_names {
+                u32     slot_mask;
+                char    names[0];
+        } *prop;
+        const char *sp;
+        int len, i;
+        u32 mask;
+
+        prop = of_get_property(node, "slot-names", &len);
+        if (!prop)
+                return;
+
+        mask = prop->slot_mask;
+        sp = prop->names;
+
+        if (ofpci_verbose)
+                printk("PCI: Making slots for [%s] mask[0x%02x]\n",
+                       node->full_name, mask);
+
+        i = 0;
+        while (mask) {
+                struct pci_slot *pci_slot;
+                u32 this_bit = 1 << i;
+
+                if (!(mask & this_bit)) {
+                        i++;
+                        continue;
+                }
+
+                if (ofpci_verbose)
+                        printk("PCI: Making slot [%s]\n", sp);
+
+                pci_slot = pci_create_slot(bus, i, sp, NULL);
+                if (IS_ERR(pci_slot))
+                        printk(KERN_ERR "PCI: pci_create_slot returned %ld\n",
+                               PTR_ERR(pci_slot));
+
+                sp += strlen(sp) + 1;
+                mask &= ~this_bit;
+                i++;
+        }
+}
+
+static int __init of_pci_slot_init(void)
+{
+        struct pci_bus *pbus = NULL;
+
+        while ((pbus = pci_find_next_bus(pbus)) != NULL) {
+                struct device_node *node;
+
+                if (pbus->self) {
+                        struct dev_archdata *sd = pbus->self->sysdata;
+
+                        /* PCI->PCI bridge */
+                        node = sd->prom_node;
+                } else {
+                        struct pci_pbm_info *pbm = pbus->sysdata;
+
+                        /* Host PCI controller */
+                        node = pbm->op->node;
+                }
+
+                pci_bus_slot_names(node, pbus);
+        }
+
+        return 0;
+}
+
+module_init(of_pci_slot_init);
+#endif