[POWERPC] Merge 32 and 64 bits pcibios_enable_device

This merge the two implementations, based on the previously
fixed up 32 bits one.  The pcibios_enable_device_hook in ppc_md
is now available for ppc64 use.  Also remove the new unused
"initial" parameter from it and fixup users.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 38 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index f706b7e83d7e..8935661d12d0 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1127,3 +1127,41 @@ void __devinit pcibios_claim_one_bus(struct pci_bus *bus)
 }
 EXPORT_SYMBOL_GPL(pcibios_claim_one_bus);
 #endif /* CONFIG_HOTPLUG */
+
+int pcibios_enable_device(struct pci_dev *dev, int mask)
+{
+        u16 cmd, old_cmd;
+        int idx;
+        struct resource *r;
+
+        if (ppc_md.pcibios_enable_device_hook)
+                if (ppc_md.pcibios_enable_device_hook(dev))
+                        return -EINVAL;
+
+        pci_read_config_word(dev, PCI_COMMAND, &cmd);
+        old_cmd = cmd;
+        for (idx = 0; idx < PCI_NUM_RESOURCES; idx++) {
+                /* Only set up the requested stuff */
+                if (!(mask & (1 << idx)))
+                        continue;
+                r = &dev->resource[idx];
+                if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM)))
+                        continue;
+                if (r->flags & IORESOURCE_UNSET) {
+                        printk(KERN_ERR "PCI: Device %s not available because"
+                               " of resource collisions\n", pci_name(dev));
+                        return -EINVAL;
+                }
+                if (r->flags & IORESOURCE_IO)
+                        cmd |= PCI_COMMAND_IO;
+                if (r->flags & IORESOURCE_MEM)
+                        cmd |= PCI_COMMAND_MEMORY;
+        }
+        if (cmd != old_cmd) {
+                printk("PCI: Enabling device %s (%04x -> %04x)\n",
+                       pci_name(dev), old_cmd, cmd);
+                pci_write_config_word(dev, PCI_COMMAND, cmd);
+        }
+        return 0;
+}
+