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SubjectRe: [PATCH v6 00/30] Refine PCI scan interfaces and make generic pci host bridge
On 2015/3/13 19:31, Liviu Dudau wrote:
> On Thu, Mar 12, 2015 at 04:23:06PM -0500, Bjorn Helgaas wrote:
>> On Mon, Mar 09, 2015 at 10:33:57AM +0800, Yijing Wang wrote:
>>> ...
>>> Yijing Wang (29):
>>> PCI: Rip out pci_bus_add_devices() from pci_scan_bus()
>>> PCI: Rip out pci_bus_add_devices() from pci_scan_root_bus()
>>> sparc/PCI: Claim bus resources before pci_bus_add_devices()
>>
>> I put the above patches plus a cleanup patch on my pci/enumeration branch.
>> Please rebase your next revision to that. If there's anything else
>> non-controversial that we can pull in to chip away at this, let me know.
>
> Hi Bjorn and Yijing,
>
> Sorry for not providing feedback earlier on this series (or any previous ones),
> I'm just crawling out from under a rock of doing graphics drivers :)
>
> The patch ripping out pci_bus_add_devices() from pci_scan_root_bus() misses out
> the users of that function from drivers/pci/host. If Yijing is going to refresh
> the series it is probably worth starting with adding back the call into pcie-xilinx.c
> and pci-versatile.c.

Hi Liviu, thanks for your comment. I would add pci_bus_add_devices() for pci-versatile.c,
But for pcie-xilinx.c and other host drivers used for arm32, we do not need to add
pci_bus_add_devices() for them, because in arm32 pci enumeration, another pci_bus_add_devices()
would be called in pci_common_init_dev();

for arm32 pci enumeration:
pci_common_init_dev()
pcibios_init_hw()
hw->scan/pci_scan_root_bus()
pci_bus_size_bridges()
pci_bus_assign_resources()
pci_bus_add_devices()

Is there something I have missed ?

Thanks!
Yijing.

>
> Will try to review (and test) the rest of the series soon.
>
> Best regards,
> Liviu
>
>>
>>> PCI: Export busn_resource to drivers/pci
>>> PCI: Remove deprecated pci_scan_bus_parented()
>>> PCI: Combine PCI domain and bus number in u32 arg
>>> PCI: Pass PCI domain number combined with root bus number
>>> PCI: Introduce pci_host_assign_domain_nr() to assign domain
>>> PCI: Separate pci_host_bridge creation out of pci_create_root_bus()
>>> PCI: Introduce pci_host_bridge_list to manage host bridges
>>> PCI: Save sysdata in pci_host_bridge drvdata
>>> PCI: Introduce pci_host_bridge_ops to support host specific
>>> operations
>>> PCI: Introduce new scan function pci_scan_host_bridge()
>>> x86/PCI: Refine pci_acpi_scan_root() with generic pci_host_bridge
>>> ia64/PCI: Refine pci_acpi_scan_root() with generic pci_host_bridge
>>> powerpc/pci: Rename pcibios_root_bridge_prepare()
>>> powerpc/pci: Use pci_scan_host_bridge() for simplicity
>>> PCI: Remove weak pcibios_root_bridge_prepare()
>>> sparc/PCI: Use pci_scan_host_bridge() for simplicity
>>> PCI: Introduce pci_bus_child_max_busnr()
>>> parisc/PCI: Use pci_scan_root_bus() for simplicity
>>> PCI/mvebu: Use pci_common_init_dev() to simplify code
>>> PCI/tegra: Remove redundant tegra_pcie_scan_bus()
>>> PCI/designware: Use pci_scan_root_bus() for simplicity
>>> PCI/xgene: Use pci_scan_root_bus() instead of pci_create_root_bus()
>>> PCI: Rename __pci_create_root_bus() to pci_create_root_bus()
>>> PCI: Export find_pci_host_bridge() and rename to
>>> pci_find_host_bridge()
>>> PCI: Remove platform specific pci_domain_nr()
>>> PCI: Remove pci_bus_assign_domain_nr()
>>
>


--
Thanks!
Yijing



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