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author | Bjorn Helgaas <bhelgaas@google.com> | 2011-10-28 22:28:14 (GMT) |
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committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2012-01-06 20:11:14 (GMT) |
commit | 2cd6975a4ff92a75e46240109d01c1daf4682e5d (patch) | |
tree | ec5ca0a025c31e54c5f4c6701dc8c79ce012f820 /arch/xtensa | |
parent | 46fbade05ca0784ca3c959bd7bf2aae7d81306c2 (diff) | |
download | linux-2cd6975a4ff92a75e46240109d01c1daf4682e5d.tar.xz |
x86/PCI: convert to pci_create_root_bus() and pci_scan_root_bus()
x86 has two kinds of PCI root bus scanning:
(1) ACPI-based, using _CRS resources. This used pci_create_bus(), not
pci_scan_bus(), because ACPI hotplug needed to split the
pci_bus_add_devices() into a separate host bridge .start() method.
This patch parses the _CRS resources earlier, so we can build a list of
resources and pass it to pci_create_root_bus().
Note that as before, we parse the _CRS even if we aren't going to use
it so we can print it for debugging purposes.
(2) All other, which used either default resources (ioport_resource and
iomem_resource) or information read from the hardware via amd_bus.c or
similar. This used pci_scan_bus().
This patch converts x86_pci_root_bus_res_quirks() (previously called
from pcibios_fixup_bus()) to x86_pci_root_bus_resources(), which builds
a list of resources before we call pci_scan_root_bus().
We also use x86_pci_root_bus_resources() if we have ACPI but are
ignoring _CRS.
CC: Yinghai Lu <yinghai.lu@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/xtensa')
0 files changed, 0 insertions, 0 deletions