[PATCH 00/11] QOM'ify PIIX3 southbridge

[Bernhard Beschow]

Similar to PIIX4 this series QOM'ifies internal device creation for PIIX3.
This reduces the delta between the implementations of PIIX3 and PIIX4 and
therefore might allow to merge both implementations in the future.

There were two challenges in this series:

First, QEMU considers the ACPI and USB functions to be optional in PIIX3.
When instantiating those with object_initialize_child(), they need to be
unparented in the realize function to prevent an assertion (see respective
commit messages).

Second, the PIC used to be instantiated outside of the southbridge while
some sub functions require a PIC with populated qemu_irqs. This has been
solved by introducing a proxy PIC which furthermore allows PIIX3 to be
agnostic towards the virtualization technology used (KVM, TCG, Xen).

Testing done:
* make check
* make check-avocado
* Boot live CD:
  * qemu-system-x86_64 -M pc -m 2G -accel kvm -cpu host -cdrom 
manjaro-kde-21.3.2-220704-linux515.iso
  * qemu-system-x86_64 -M q35 -m 2G -accel kvm -cpu host -cdrom 
manjaro-kde-21.3.2-220704-linux515.iso

Bernhard Beschow (11):
  hw/i386/pc: QOM'ify DMA creation
  hw/i386/pc_piix: Allow for setting properties before realizing PIIX3
    southbridge
  hw/isa/piix3: QOM'ify USB controller creation
  hw/isa/piix3: QOM'ify ACPI controller creation
  hw/i386/pc: QOM'ify RTC creation
  hw/i386/pc: No need for rtc_state to be an out-parameter
  hw/intc/i8259: Introduce i8259 proxy "isa-pic"
  hw/isa/piix3: QOM'ify ISA PIC creation
  hw/isa/piix3: QOM'ify IDE controller creation
  hw/isa/piix3: Wire up ACPI interrupt internally
  hw/isa/piix3: Remove extra ';' outside of functions

 hw/i386/Kconfig               |  1 -
 hw/i386/pc.c                  | 17 ++++---
 hw/i386/pc_piix.c             | 70 ++++++++++++++++-------------
 hw/i386/pc_q35.c              |  3 +-
 hw/intc/i8259.c               | 27 +++++++++++
 hw/isa/Kconfig                |  1 +
 hw/isa/lpc_ich9.c             | 11 +++++
 hw/isa/piix3.c                | 84 ++++++++++++++++++++++++++++++++---
 include/hw/i386/ich9.h        |  2 +
 include/hw/i386/pc.h          |  2 +-
 include/hw/intc/i8259.h       | 14 ++++++
 include/hw/southbridge/piix.h | 16 ++++++-
 12 files changed, 201 insertions(+), 47 deletions(-)

-- 
2.37.1