This patchset allows hotplugged PCIe devices to be enumerated during a bus rescan being issued via sysfs, when the "Presence Detect Changed" interrupt is not available.
As a first part of our work on adding support for hotplugging PCIe bridges full of devices without special requirement such as Hot-Plug Controller, reservation of bus numbers and memory regions by firmware, etc., this serie is intended to solve the first two problems from the list below: I PowerNV doesn't discover new hotplugged PCIe devices II EEH is falsely triggered when poking empty slots during PCIe rescan on PowerNV III The PCI subsystem is not prepared to runtime changes of BAR addresses IV Device drivers don't track changes of their BAR addresses V Move BARs of working devices to make space for new ones VI Add support for PCIe bridge hotplug Sergey Miroshnichenko (5): powerpc/pci: Access PCI config space directly w/o pci_dn powerpc/pci: Create pci_dn on demand powerpc/pci: Use DT to create pci_dn for root bridges only powerpc/powernv/pci: Enable reassigning the bus numbers PCI/powerpc/eeh: Add pcibios hooks for preparing to rescan arch/powerpc/include/asm/eeh.h | 2 + arch/powerpc/kernel/eeh.c | 14 +++ arch/powerpc/kernel/pci_dn.c | 75 ++++++++++++----- arch/powerpc/kernel/rtas_pci.c | 89 ++++++++++++-------- arch/powerpc/platforms/powernv/eeh-powernv.c | 20 +++++ arch/powerpc/platforms/powernv/pci.c | 55 +++++++----- drivers/pci/probe.c | 14 +++ include/linux/pci.h | 2 + 8 files changed, 197 insertions(+), 74 deletions(-) -- 2.17.1
