if (pin == 0)
return -1;
if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_LINE, &line) ||
- line == 0xff) {
+ line == 0xff || line == 0) {
return -1;
}
- DBG(" -> no map ! Using irq line %d from PCI config\n", line);
+ DBG(" -> no map ! Using line %d (pin %d) from PCI config\n",
+ line, pin);
virq = irq_create_mapping(NULL, line);
if (virq != NO_IRQ)
struct resource *res = dev->resource + i;
if (!res->flags)
continue;
- if (res->end == 0xffffffff) {
+ /* On platforms that have PPC_PCI_PROBE_ONLY set, we don't
+ * consider 0 as an unassigned BAR value. It's technically
+ * a valid value, but linux doesn't like it... so when we can
+ * re-assign things, we do so, but if we can't, we keep it
+ * around and hope for the best...
+ */
+ if (res->start == 0 && !(ppc_pci_flags & PPC_PCI_PROBE_ONLY)) {
pr_debug("PCI:%s Resource %d %016llx-%016llx [%x] is unassigned\n",
pci_name(dev), i,
(unsigned long long)res->start,
static void __devinit __pcibios_fixup_bus(struct pci_bus *bus)
{
+ struct pci_controller *hose = pci_bus_to_host(bus);
struct pci_dev *dev = bus->self;
pr_debug("PCI: Fixup bus %d (%s)\n", bus->number, dev ? pci_name(dev) : "PHB");
for (i = 0; i < PCI_BUS_NUM_RESOURCES; ++i) {
if ((res = bus->resource[i]) == NULL)
continue;
- if (!res->flags || bus->self->transparent)
+ if (!res->flags)
continue;
+ if (i >= 3 && bus->self->transparent)
+ continue;
+ /* On PowerMac, Apple leaves bridge windows open over
+ * an inaccessible region of memory space (0...fffff)
+ * which is somewhat bogus, but that's what they think
+ * means disabled...
+ *
+ * We clear those to force them to be reallocated later
+ *
+ * We detect such regions by the fact that the base is
+ * equal to the pci_mem_offset of the host bridge and
+ * their size is smaller than 1M.
+ */
+ if (res->flags & IORESOURCE_MEM &&
+ res->start == hose->pci_mem_offset &&
+ res->end < 0x100000) {
+ printk(KERN_INFO
+ "PCI: Closing bogus Apple Firmware"
+ " region %d on bus 0x%02x\n",
+ i, bus->number);
+ res->flags = 0;
+ continue;
+ }
pr_debug("PCI:%s Bus rsrc %d %016llx-%016llx [%x] fixup...\n",
pci_name(dev), i,