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#include
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#include
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#include
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#include
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#include
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#include
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LIST_HEAD(pci_root_buses);
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#define IO_SPACE_LIMIT          0xffff
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#define IO_SPACE_LIMIT          0xffff
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#define PCIBIOS_SUCCESSFUL      0x00
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#define PCIBIOS_SUCCESSFUL      0x00
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    return pos;
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    return pos;
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}
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}
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static struct pci_bus * pci_alloc_bus(void)
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{
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    struct pci_bus *b;
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    b = kzalloc(sizeof(*b), GFP_KERNEL);
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    if (b) {
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        INIT_LIST_HEAD(&b->node);
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        INIT_LIST_HEAD(&b->children);
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        INIT_LIST_HEAD(&b->devices);
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        INIT_LIST_HEAD(&b->slots);
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        INIT_LIST_HEAD(&b->resources);
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    }
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    return b;
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}
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struct pci_bus * pci_create_bus(int bus, struct pci_ops *ops, void *sysdata)
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{
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    int error;
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    struct pci_bus *b, *b2;
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    b = pci_alloc_bus();
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    if (!b)
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        return NULL;
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    b->sysdata = sysdata;
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    b->ops = ops;
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    b2 = pci_find_bus(pci_domain_nr(b), bus);
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    if (b2) {
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        /* If we already got to this bus through a different bridge, ignore it */
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        dbgprintf("bus already known\n");
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        goto err_out;
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    }
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//    down_write(&pci_bus_sem);
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    list_add_tail(&b->node, &pci_root_buses);
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//    up_write(&pci_bus_sem);
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    b->number = b->secondary = bus;
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    b->resource[0] = &ioport_resource;
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    b->resource[1] = &iomem_resource;
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    return b;
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err_out:
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    kfree(b);
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    return NULL;
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}
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static struct pci_bus *pci_do_find_bus(struct pci_bus *bus, unsigned char busnr)
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static struct pci_bus *pci_do_find_bus(struct pci_bus *bus, unsigned char busnr)
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{
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{
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    return 0;
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    return 0;
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}
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}
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#if 0
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u32 pci_probe = 0;
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#define PCI_NOASSIGN_ROMS   0x80000
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#define PCI_NOASSIGN_BARS   0x200000
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static void pcibios_fixup_device_resources(struct pci_dev *dev)
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{
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    struct resource *rom_r = &dev->resource[PCI_ROM_RESOURCE];
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    struct resource *bar_r;
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    int bar;
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    if (pci_probe & PCI_NOASSIGN_BARS) {
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        /*
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        * If the BIOS did not assign the BAR, zero out the
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        * resource so the kernel doesn't attmept to assign
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        * it later on in pci_assign_unassigned_resources
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        */
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        for (bar = 0; bar <= PCI_STD_RESOURCE_END; bar++) {
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            bar_r = &dev->resource[bar];
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            if (bar_r->start == 0 && bar_r->end != 0) {
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                bar_r->flags = 0;
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                bar_r->end = 0;
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            }
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        }
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    }
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    if (pci_probe & PCI_NOASSIGN_ROMS) {
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        if (rom_r->parent)
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            return;
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        if (rom_r->start) {
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            /* we deal with BIOS assigned ROM later */
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            return;
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        }
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        rom_r->start = rom_r->end = rom_r->flags = 0;
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    }
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}
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/*
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 *  Called after each bus is probed, but before its children
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 *  are examined.
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 306 
 */
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 308 
void pcibios_fixup_bus(struct pci_bus *b)
- 
 
 309 
{
- 
 
 310 
    struct pci_dev *dev;
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 311 
 
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 312 
    /* root bus? */
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 313 
//    if (!b->parent)
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 314 
//        x86_pci_root_bus_res_quirks(b);
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 315 
    pci_read_bridge_bases(b);
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 316 
    list_for_each_entry(dev, &b->devices, bus_list)
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 317 
        pcibios_fixup_device_resources(dev);
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 318 
}
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