diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2007-12-20 14:54:57 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-12-20 16:18:11 +1100 |
| commit | 549beb9ba3b03345cbd8e1233825d5b197a3f9f7 (patch) | |
| tree | c192ba6cdfa13e9888d9e5f534d2862127d412cb /arch/powerpc/kernel/pci-common.c | |
| parent | 24f8c827f9b8ab2c8644f7ab85a1b1d58fc0fcf7 (diff) | |
| download | linux-549beb9ba3b03345cbd8e1233825d5b197a3f9f7.tar.bz2 | |
[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.c | 38 |
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; +} + |