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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2007-12-20 14:54:57 +1100
committerPaul Mackerras <paulus@samba.org>2007-12-20 16:18:11 +1100
commit549beb9ba3b03345cbd8e1233825d5b197a3f9f7 (patch)
treec192ba6cdfa13e9888d9e5f534d2862127d412cb /arch/powerpc/kernel/pci-common.c
parent24f8c827f9b8ab2c8644f7ab85a1b1d58fc0fcf7 (diff)
[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>
Diffstat (limited to 'arch/powerpc/kernel/pci-common.c')
-rw-r--r--arch/powerpc/kernel/pci-common.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index f706b7e83d7..8935661d12d 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;
+}
+