PCI/cardbus: Add a fixup hook and fix powerpc
The cardbus code creates PCI devices without ever going through the necessary fixup bits and pieces that normal PCI devices go through. There's in fact a commented out call to pcibios_fixup_bus() in there, it's commented because ... it doesn't work. I could make pcibios_fixup_bus() do the right thing on powerpc easily but I felt it cleaner instead to provide a specific hook pci_fixup_cardbus for which a weak empty implementation is provided by the PCI core. This fixes cardbus on powerbooks and probably all other PowerPC platforms which was broken completely for ever on some platforms and since 2.6.31 on others such as PowerBooks when we made the DMA ops mandatory (since those are setup by the fixups). Acked-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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@ -1107,6 +1107,12 @@ void __devinit pcibios_setup_bus_devices(struct pci_bus *bus)
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list_for_each_entry(dev, &bus->devices, bus_list) {
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list_for_each_entry(dev, &bus->devices, bus_list) {
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struct dev_archdata *sd = &dev->dev.archdata;
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struct dev_archdata *sd = &dev->dev.archdata;
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/* Cardbus can call us to add new devices to a bus, so ignore
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* those who are already fully discovered
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*/
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if (dev->is_added)
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continue;
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/* Setup OF node pointer in archdata */
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/* Setup OF node pointer in archdata */
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sd->of_node = pci_device_to_OF_node(dev);
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sd->of_node = pci_device_to_OF_node(dev);
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@ -1147,6 +1153,13 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus)
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}
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}
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EXPORT_SYMBOL(pcibios_fixup_bus);
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EXPORT_SYMBOL(pcibios_fixup_bus);
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void __devinit pci_fixup_cardbus(struct pci_bus *bus)
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{
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/* Now fixup devices on that bus */
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pcibios_setup_bus_devices(bus);
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}
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static int skip_isa_ioresource_align(struct pci_dev *dev)
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static int skip_isa_ioresource_align(struct pci_dev *dev)
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{
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{
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if ((ppc_pci_flags & PPC_PCI_CAN_SKIP_ISA_ALIGN) &&
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if ((ppc_pci_flags & PPC_PCI_CAN_SKIP_ISA_ALIGN) &&
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@ -2798,6 +2798,11 @@ int __attribute__ ((weak)) pci_ext_cfg_avail(struct pci_dev *dev)
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return 1;
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return 1;
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}
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}
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void __weak pci_fixup_cardbus(struct pci_bus *bus)
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{
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}
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EXPORT_SYMBOL(pci_fixup_cardbus);
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static int __init pci_setup(char *str)
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static int __init pci_setup(char *str)
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{
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{
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while (str) {
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while (str) {
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@ -222,7 +222,7 @@ int __ref cb_alloc(struct pcmcia_socket *s)
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unsigned int max, pass;
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unsigned int max, pass;
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s->functions = pci_scan_slot(bus, PCI_DEVFN(0, 0));
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s->functions = pci_scan_slot(bus, PCI_DEVFN(0, 0));
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/* pcibios_fixup_bus(bus); */
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pci_fixup_cardbus(bus);
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max = bus->secondary;
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max = bus->secondary;
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for (pass = 0; pass < 2; pass++)
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for (pass = 0; pass < 2; pass++)
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@ -566,6 +566,9 @@ void pcibios_align_resource(void *, struct resource *, resource_size_t,
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resource_size_t);
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resource_size_t);
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void pcibios_update_irq(struct pci_dev *, int irq);
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void pcibios_update_irq(struct pci_dev *, int irq);
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/* Weak but can be overriden by arch */
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void pci_fixup_cardbus(struct pci_bus *);
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/* Generic PCI functions used internally */
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/* Generic PCI functions used internally */
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extern struct pci_bus *pci_find_bus(int domain, int busnr);
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extern struct pci_bus *pci_find_bus(int domain, int busnr);
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