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path: root/drivers/pci/setup-res.c
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Diffstat (limited to 'drivers/pci/setup-res.c')
-rw-r--r--drivers/pci/setup-res.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index ea9277b7f899..577f4b55c46d 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -155,6 +155,46 @@ int pci_assign_resource(struct pci_dev *dev, int resno)
return ret;
}
+#ifdef CONFIG_EMBEDDED
+int pci_assign_resource_fixed(struct pci_dev *dev, int resno)
+{
+ struct pci_bus *bus = dev->bus;
+ struct resource *res = dev->resource + resno;
+ unsigned int type_mask;
+ int i, ret = -EBUSY;
+
+ type_mask = IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH;
+
+ for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
+ struct resource *r = bus->resource[i];
+ if (!r)
+ continue;
+
+ /* type_mask must match */
+ if ((res->flags ^ r->flags) & type_mask)
+ continue;
+
+ ret = request_resource(r, res);
+
+ if (ret == 0)
+ break;
+ }
+
+ if (ret) {
+ printk(KERN_ERR "PCI: Failed to allocate %s resource "
+ "#%d:%llx@%llx for %s\n",
+ res->flags & IORESOURCE_IO ? "I/O" : "mem",
+ resno, (unsigned long long)(res->end - res->start + 1),
+ (unsigned long long)res->start, pci_name(dev));
+ } else if (resno < PCI_BRIDGE_RESOURCES) {
+ pci_update_resource(dev, res, resno);
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(pci_assign_resource_fixed);
+#endif
+
/* Sort resources by alignment */
void __devinit
pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)