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    SubjectRe: 2.6.26-rc9-git9 doesn't boot on Macintel
    On Wed, Jul 16, 2008 at 8:44 PM, Jack Howarth <howarth@bromo.msbb.uc.edu> wrote:
    > YH,
    > Okay, I can confirm that 2.6.25.10 boots okay with pci=nommconf
    > which does disable MMCONFIG. It also works fine by default with
    > MMCONFIG enabled. So there may be two possibly unrelated problems
    > in 2.6.26. The first being that MMCONFIG doesn't start up properly
    > without your patch and the second being that with or without
    > MMCONFIG, the boot process hangs just before when the line...
    >
    > PCI: Transparent bridge - 0000:00:1e.0

    please set CONFIG_PCI_DEBUG in your .config and apply attach two patches

    should get sth like

    calling acpi_pci_root_init+0x0/0x54
    ACPI: PCI Root Bridge [PCI0] (0000:00)
    PCI: Scanning bus 0000:00
    PCI: Found 0000:00:00.0 [10de/005e] 000580 00
    PCI: Found 0000:00:01.0 [10de/0051] 000601 00
    pci 0000:00:01.0: calling nvidia_force_enable_hpet+0x0/0xe7
    PCI: Found 0000:00:01.1 [10de/0052] 000c05 00
    PCI: 0000:00:01.1 reg 10 io port: [ee00, ee1f]
    PCI: 0000:00:01.1 reg 20 io port: [ed00, ed3f]
    PCI: 0000:00:01.1 reg 24 io port: [ed40, ed7f]
    PCI: Found 0000:00:02.0 [10de/005a] 000c03 00
    PCI: 0000:00:02.0 reg 10 32bit mmio: [fdeff000, fdefffff]
    PCI: Found 0000:00:02.1 [10de/005b] 000c03 00
    PCI: 0000:00:02.1 reg 10 32bit mmio: [fdefec00, fdefecff]
    PCI: Found 0000:00:06.0 [10de/0053] 000101 00

    YH
    Index: linux-2.6/drivers/pci/setup-bus.c
    ===================================================================
    --- linux-2.6.orig/drivers/pci/setup-bus.c
    +++ linux-2.6/drivers/pci/setup-bus.c
    @@ -537,6 +537,36 @@ void __ref pci_bus_assign_resources(stru
    }
    EXPORT_SYMBOL(pci_bus_assign_resources);

    +static void pci_bus_dump_res(struct pci_bus *bus)
    +{
    + int i;
    +
    + for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
    + struct resource *res = bus->resource[i];
    + if (!res)
    + continue;
    +
    + printk(KERN_INFO "bus: %02x index %x %s: [%llx, %llx]\n", bus->number, i, (res->flags & IORESOURCE_IO)? "io port":"mmio", res->start, res->end);
    + }
    +}
    +
    +static void pci_bus_dump_resources(struct pci_bus *bus)
    +{
    + struct pci_bus *b;
    + struct pci_dev *dev;
    +
    +
    + pci_bus_dump_res(bus);
    +
    + list_for_each_entry(dev, &bus->devices, bus_list) {
    + b = dev->subordinate;
    + if (!b)
    + continue;
    +
    + pci_bus_dump_resources(b);
    + }
    +}
    +
    void __init
    pci_assign_unassigned_resources(void)
    {
    @@ -552,4 +582,9 @@ pci_assign_unassigned_resources(void)
    pci_bus_assign_resources(bus);
    pci_enable_bridges(bus);
    }
    +
    + /* dump the resource on buses */
    + list_for_each_entry(bus, &pci_root_buses, node) {
    + pci_bus_dump_resources(bus);
    + }
    }Index: linux-2.6/drivers/pci/probe.c
    ===================================================================
    --- linux-2.6.orig/drivers/pci/probe.c
    +++ linux-2.6/drivers/pci/probe.c
    @@ -275,6 +275,7 @@ static void pci_read_bases(struct pci_de
    }
    res->start = l64 & PCI_BASE_ADDRESS_MEM_MASK;
    res->end = res->start + sz64;
    + printk(KERN_INFO "PCI: %s reg %x 64bit mmio: [%llx, %llx]\n", pci_name(dev), reg, res->start, res->end);
    #else
    if (sz64 > 0x100000000ULL) {
    printk(KERN_ERR "PCI: Unable to handle 64-bit "
    @@ -290,6 +291,8 @@ static void pci_read_bases(struct pci_de
    res->end = sz;
    }
    #endif
    + } else {
    + printk(KERN_INFO "PCI: %s reg %x %s: [%llx, %llx]\n", pci_name(dev), reg, (res->flags & IORESOURCE_IO)? "io port":"32bit mmio", res->start, res->end);
    }
    }
    if (rom) {
    @@ -357,6 +360,7 @@ void __devinit pci_read_bridge_bases(str
    res->start = base;
    if (!res->end)
    res->end = limit + 0xfff;
    + printk(KERN_INFO "PCI: bridge %s io port: [%llx, %llx]\n", pci_name(dev), res->start, res->end);
    }

    res = child->resource[1];
    @@ -368,6 +372,7 @@ void __devinit pci_read_bridge_bases(str
    res->flags = (mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | IORESOURCE_MEM;
    res->start = base;
    res->end = limit + 0xfffff;
    + printk(KERN_INFO "PCI: bridge %s 32bit mmio: [%llx, %llx]\n", pci_name(dev), res->start, res->end);
    }

    res = child->resource[2];
    @@ -402,6 +407,7 @@ void __devinit pci_read_bridge_bases(str
    res->flags = (mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | IORESOURCE_MEM | IORESOURCE_PREFETCH;
    res->start = base;
    res->end = limit + 0xfffff;
    + printk(KERN_INFO "PCI: bridge %s %sbit mmio pref: [%llx, %llx]\n", pci_name(dev), (res->flags & PCI_PREF_RANGE_TYPE_64)?"64":"32",res->start, res->end);
    }
    }
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