From: Gavin Shan <shangw at linux.vnet.ibm.com>

[Gavin Shan]

On Thu, Jun 27, 2013 at 01:46:41PM +0800, Gavin Shan wrote:

The subject went wrong. I didn't make the format correct and here's
the makeup:

[PATCH v4 00/8] Follow-up fixes for EEH on PowerNV

>The series of patches are follow-up in order to make EEH workable for PowerNV
>platform on Juno-IOC-L machine. Couple of issues have been fixed with help of
>Ben:
>
>	- Check PCIe link after PHB complete reset
>	- Restore config space for bridges
>	- The EEH address cache wasn't built successfully
>	- Misc cleanup on output messages
>	- Misc cleanup on EEH flags maintained by "struct pnv_phb"
>	- Misc cleanup on properties of functions to avoid build warnings
>	- Let PCI config accessors rely on device node
>	- Do hotplug during reset for those devices whose drivers can't
>	  support EEH
>
>---
>
>Trigger frozen PE:
>
>        echo 0x0000000002000000 > /sys/kernel/debug/powerpc/PCI0000/err_injct
>        sleep 1
>        echo 0x0 > /sys/kernel/debug/powerpc/PCI0000/err_injct
>
>Trigger fenced PHB:
>
>	echo 0x8000000000000000 > /sys/kernel/debug/powerpc/PCI0000/err_injct
>
>
>---
>
>Changelog:
>==========
>v3 -> v4:
>	* Add more output messages in EEH core to let users know what the EEH
>	  core is doing.
>	* Add one patch to use device node in the PCI config accessors since
>	  the accessors used by EEH and it's not safe enough to refer PCI device
>	  and bus. We instead fully utilize the information from PCI_DN.
>	* Add one patch to remove those deivces whose drivers can't support EEH
>	  before reset, and add them to the system after reset. 
>v2 -> v3:
>	* Fix overwritten buffer while collecting data from PCI config space.
>v1 -> v2:
>	* Remove the mechanism to block PCI-CFG and MMIO.
>	* Add one patch to do cleanup on output messages.
>	* Add one patch to avoid build warnings.
>	* Split functions to restore BARs for PCI devices and bridges separately.
>
>---
>
>arch/powerpc/include/asm/eeh.h               |    8 +-
>arch/powerpc/include/asm/pci.h               |    1 +
>arch/powerpc/kernel/eeh.c                    |   43 +++++--
>arch/powerpc/kernel/eeh_cache.c              |    4 +-
>arch/powerpc/kernel/eeh_driver.c             |  157 +++++++++++++++++++++++-
>arch/powerpc/kernel/eeh_pe.c                 |  166 ++++++++++++++++++++++++--
>arch/powerpc/kernel/pci_hotplug.c            |    8 +-
>arch/powerpc/platforms/powernv/eeh-ioda.c    |   33 +++--
>arch/powerpc/platforms/powernv/eeh-powernv.c |   44 +-------
>arch/powerpc/platforms/powernv/pci-ioda.c    |    1 +
>arch/powerpc/platforms/powernv/pci.c         |  124 ++++++++++++--------
>arch/powerpc/platforms/powernv/pci.h         |   11 ++-
>drivers/pci/probe.c                          |    6 +-
>13 files changed, 462 insertions(+), 144 deletions(-)
>
>Thanks,
>Gavin
>
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