[Skiboot] [PATCH v5 00/15] PCI Slot Management

[Gavin Shan]

The series of patches intend to support PCI slots for various tasks like
retrieving PCI slot status, PCI slot reset, and PCI slot hotplug. The
design is highlighted as below:

   * Each PHB is expected to have one associated "PHB" slot, which is
     created by platform.
   * Each PCI slot is created by platform as well, which might inherit
     some properties from PHB slot.
   * Currently, Firenze is the only one platform that populates PCI slots.
   * Each PCI slot has couple of callbacks implemented to support various
     functions it should support in pci-slot.c, which can be overrided by
     platforms to have their own particular behaviour or PCI slot properties.
   * The PCI slot functionality is implemented with state machine, which
     is inherited from Ben's original code to support PHBs. The PCI slots
     allowed to be overrided by platforms as well.
   * When removing or adding adapter to one particular PCI slot, the device
     nodes tied through the PCI slot will be removed or added (after rescanning).
     All device-tree changes is formated as message sent to OS, which needs
     those inforamtion to populate pci_dn and eeh_dev.

=========
Changelog
=========
v5:
   * Fix I2C issues caused by wrong I2C master frequency.
   * Fix reserved PE# when unmapping RID on PHB3.
   * Add logic to support PCI hotplug: When one adapter is removed from the
     slot, the power supply and the device nodes tied through the slot will
     be cut off. When adding one adapter to PCI slot, the PCI bus leading
     from the slot will be rescanned. On any PCI topology changes, the device
     tree changes will be sent to OS for updating.
   * Refactor the PCI slot states and remove unnecessary ones.

Gavin Shan (15):
  platforms/firenze: Fix I2C clock source frequency
  hw/p8-i2c: Speed up SMBUS_WRITE
  hw/p8-i2c: Allow to disable timeout
  hw/phb3: Fix reserved PE# for RID unmapping
  core/pci: Allow iteration on specified devices
  core/pci: Trace device tree node from PCI device
  core/pci: PCI slot management core
  hw/p5ioc: Support PHB slot
  hw/p7ioc: Support PHB slot
  hw/phb3: Support PHB slot
  platforms/ibm-fsp: Refactor PCI stuff
  PCI: Reinitialize devices on slot reset
  core/pci: PCI slot
  core/opal: Switch to PCI slot
  doc: PCI slot

 core/Makefile.inc               |    2 +-
 core/pci-opal.c                 |  168 ++++--
 core/pci-slot.c                 |  914 +++++++++++++++++++++++++++++++
 core/pci.c                      |  336 ++++++------
 doc/pci-slot-properties.txt     |   17 -
 doc/pci-slot.txt                |   87 +++
 hdata/spira.c                   |   19 +
 hdata/spira.h                   |    8 +-
 hw/p5ioc2-phb.c                 |  367 ++-----------
 hw/p7ioc-phb.c                  | 1149 ++++++++++++++++-----------------------
 hw/p8-i2c.c                     |   42 +-
 hw/phb3.c                       |  695 ++++++++++-------------
 include/i2c.h                   |    9 +
 include/opal-api.h              |    6 +-
 include/p5ioc2.h                |   10 +-
 include/p7ioc.h                 |   49 +-
 include/pci-slot.h              |  251 +++++++++
 include/pci.h                   |  164 +-----
 include/phb3.h                  |   53 +-
 include/platform.h              |    3 +-
 platforms/ibm-fsp/Makefile.inc  |    3 +-
 platforms/ibm-fsp/apollo-pci.c  |   98 ++++
 platforms/ibm-fsp/apollo.c      |   23 +-
 platforms/ibm-fsp/firenze-pci.c | 1043 +++++++++++++++++++++++++++++++++++
 platforms/ibm-fsp/firenze.c     |  217 +-------
 platforms/ibm-fsp/ibm-fsp.h     |   13 +
 platforms/ibm-fsp/lxvpd.c       |  383 ++++++++-----
 platforms/ibm-fsp/lxvpd.h       |   35 +-
 28 files changed, 3929 insertions(+), 2235 deletions(-)
 create mode 100644 core/pci-slot.c
 delete mode 100644 doc/pci-slot-properties.txt
 create mode 100644 doc/pci-slot.txt
 create mode 100644 include/pci-slot.h
 create mode 100644 platforms/ibm-fsp/apollo-pci.c
 create mode 100644 platforms/ibm-fsp/firenze-pci.c

-- 
2.1.0