[PATCH v3 00/30] pci: build device tree from root

[Mark Cave-Ayland]

This patchset started off with the aim of building the PCI-based machine
device trees downwards from the root node to avoid switching either the active
package and/or current instance at various points during the tree construction.

The basis for this was to try and remove all named nodes (those which are
placed at a given path) and instead build the hierarchy in order by using
new-device and finish-device as per the IEEE-1275 specification. This was
realised by creating a new BIND_NODE_METHODS() macro which is similar to
REGISTER_NAMED_NODE() except that it doesn't alter either the active package
or the current instance, and then working through the device tree from the
root converting all the devices for the PCI-based machines to use it.

Once this conversion has been completed for all devices beneath the PCI node,
it becomes possible to remove both the REGISTER_NAMED_NODE() and
REGISTER_NAMED_NODE_PHANDLE() macros to prevent future patches from accidentally
changing the tree construction order.

Next the x86, PPC and SPARC64 device tree roots were altered to set the active
package and current instance, allowing the remaining places where the PCI code
alters either of them to be removed.

At this point instance variables were working correctly, and I noticed that
there were several PCI devices which made use of C initialisation functions and/or
properties for initial configuration. These can now be replaced with instance
variables to keep everything simple and consistent.

Signed-off-by: Mark Cave-Ayland

v3:
- Rebase onto master
- Fix up USB debug string for keyboard reported by Zoltan
- Fix for creating devices that don't have an entry in the PCI database
- Fix for MacOS 9 not initialising network reported by Howard

v2:
- Fix up NVRAM initialisation so that -prom-env 'vga-ndrv?=false' works again

Mark Cave-Ayland (30):
  libopenbios: introduce BIND_NODE_METHODS() macro
  pc_kbd: convert to use BIND_NODE_METHODS() macro
  pc_serial: convert to use BIND_NODE_METHODS() macro
  floppy: convert to use BIND_NODE_METHODS() macro
  ide: convert to use BIND_NODE_METHODS() macro
  adb: convert to use BIND_NODE_METHODS() macro
  escc: convert to use BIND_NODE_METHODS() macro
  cuda: convert to use BIND_NODE_METHODS() macro
  macio: convert to use BIND_NODE_METHODS() macro
  pmu: convert to use BIND_NODE_METHODS() macro
  usbhid: convert to use BIND_NODE_METHODS() macro
  nvram: convert to use BIND_NODE_METHODS() macro
  lsi: don't change active package when setting device alias
  lsi: convert to use BIND_NODE_METHODS() macro
  virtio: convert to use BIND_NODE_METHODS() macro
  pci: convert to use BIND_NODE_METHODS() macro
  pci: remove ob_pci_initialize() and ob_pci_empty_node
  libopenbios: remove REGISTER_NAMED_NODE and
    REGISTER_NAMED_NODE_PHANDLE macros
  nvram: ensure that NVRAM configuration is separate from NVRAM node
    creation
  ppc: move New World uninorth and nvram device node creation to the
    root device
  ppc: set active package and current instance to root device node
    before probe
  SPARC64: set active package and current instance to root device node
    before probe
  x86: set active package and current instance to root device node
    before probe
  pci: remove explicit find-device from PCI devices
  pci: remove explicit setting of my-self from PCI devices
  pci: call set-args before configuring PCI device nodes
  pc_serial: remove separate init word
  pc_kbd: use instance value to initialise C instance parameter
  lsi: use instance value to hold sd_private_t pointer
  virtio: use instance value to initialise C instance parameter

arch/ppc/qemu/init.c           |  18 +++-
 arch/sparc64/openbios.c        |   6 ++
 arch/x86/openbios.c            |   9 +-
 drivers/adb_bus.c              |  57 +++++++-----
 drivers/adb_kbd.c              |  25 ++++--
 drivers/adb_mouse.c            |  31 ++++---
 drivers/cuda.c                 | 158 ++++++++++++++++++++-------------
 drivers/escc.c                 | 113 ++++++++++++++---------
 drivers/floppy.c               |  68 +++++++-------
 drivers/ide.c                  | 123 +++++++++++++++----------
 drivers/lsi.c                  |  65 +++++++-------
 drivers/macio.c                | 118 ++++++++++++------------
 drivers/macio.h                |   1 -
 drivers/pc_kbd.c               |  48 +++++-----
 drivers/pc_serial.c            |  32 +++----
 drivers/pci.c                  | 132 +++++++++++++--------------
 drivers/pmu.c                  | 152 +++++++++++++++++++++----------
 drivers/usbhid.c               |  17 ++--
 drivers/virtio.c               |  56 +++---------
 include/drivers/drivers.h      |   2 +
 include/libopenbios/bindings.h |  19 ++--
 include/packages/nvram.h       |   4 +-
 libopenbios/bindings.c         |  10 +++
 packages/nvram.c               |  35 ++++++--
 24 files changed, 755 insertions(+), 544 deletions(-)