Hi Yijing, On Wed, Jan 21, 2015 at 12:29:55AM +0000, Yijing Wang wrote:
v1->v2: Split pci_host_bridge_list into a new patch, remove .phb_probe_mode and rework powerpc .phb_of_scan_bus() for simpilicty suggested by Arnd. Refresh some patch description log, and add a new patch to fix build warning in ia64. This series is based on Bjorn's pci-next branch. Patch 1-4 ripped out pci_bus_add_devices() from pci scan interfaces for better pci scan flow. Patch 5-11 make a generic pci_host_bridge to hold pci_host_bridge related informations, and introduce a pci_host_bridge_ops to support platform host drivers provide its own pci_host_bridge related operations to setup pci_host_bridge during pci enumeration. Patch 12-28 apply the new pci scan interfaces to platform pci host bridge drivers. Now in kernel, we scan pci bus use the following ways: 1. pci_scan_bus. parent = NULL, default io/mem/bus resources call pci_bus_add_devices() 2. pci_scan_bus_parented() + pci_bus_add_devices() default io/mem/bus resources, only used by xen 3. pci_scan_root_bus() + pci_bus_add_devices() 4. pci_create_root_bus() + pci_scan_child_bus() + pci_bus_add_devices() 5. pci_create_root_bus() + xx_of_scan_bus() + pci_bus_add_devices() And we have a lot of arch specific pci_domain_nr() and other platform specific weak function like pcibios_root_bridge_prepare(). After applied this series, we have following scan interfaces: 1. pci_scan_bus_legacy() parent = NULL, default io/mem/bus resources. for legacy pci scan 2. pci_scan_root_bus() for callers provide its own parent and io/mem/bus resources but no platform specific pci_host_bridge operations 3. pci_scan_root_bridge() for callers provide its own parent and io/mem/bus resources and pci_host_bridge_ops. Besides, above pci scan interfaces all need addtionally call pci_bus_add_devices() to set match_driver true and try to attach drivers. Also we could eliminate all arch specific pci_domain_nr() after applied this series. I tested this series on x86 (with or without ACPI). Comments and tests are warmly welcome!
Can you push a public branch out rebased against mainline for us to pull and test please ? Thanks ! Lorenzo -- To unsubscribe from this list: send the line "unsubscribe linux-m68k" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
