[PATCH 00/13] Clean up PCI IDE device models

[Bernhard Beschow <shentey@gmail.com>]

This series is yet another attempt to clean up the PCI IDE models. It is mainly
inspired the Mark's invaluable input from previous discussions. In particular,
this series attempts to follow the "PCI IDE controller specification" closer. As
a side effect, it also resolves usage of the isabus global in PIIX. Last but not
least it fixes the VIA IDE controller to not depend on its south bridge which
fixes a circular dependency.

The series is structured as follows: The first three commits resolve a circular
dependency between the VIA IDE controller and its south bridge, thereby
implementing legacy PCI IDE interrupt routing which was missing so far. The next
five patches factor out common code into the PCI IDE base class. The next two
patches resolve usage of the isabus global in PIIX by reusing now common code
from the base class. The same is then done for the SIL3112 controller. Finally,
a small convenience function is introduced which should hide some implementation
details in the PCI IDE base class.

Testing done:
* `make check`
* `make check-avocado`
* `qemu-system-ppc -machine pegasos2 -rtc base=localtime -device \
   ati-vga,guest_hwcursor=true,romfile="" -cdrom morphos-3.17.iso
   -kernel morphos-3.17/boot.img`
   The machine booted successfully and a startup sound was hearable
* `qemu-system-ppc -machine pegasos2 -rtc base=localtime -device \
   ati-vga,guest_hwcursor=true,romfile="" -cdrom morphos-3.17.iso
   -kernel morphos-3.17/boot.img`
   The machine booted successfully and applications could be started.
* qemu-system-x86_64 was used for hours during work

Bernhard Beschow (13):
  hw/ide/pci: Expose legacy interrupts as GPIOs
  hw/ide/via: Implement ISA IRQ routing
  hw/isa/vt82c686: Remove via_isa_set_irq()
  hw/ide: Extract IDEBus assignment into bmdma_init()
  hw/ide: Extract pci_ide_class_init()
  hw/ide: Extract bmdma_init_ops()
  hw/ide: Extract pci_ide_{cmd,data}_le_ops initialization into base
    class constructor
  hw/ide: Rename PCIIDEState::*_bar attributes
  hw/ide/piix: Disuse isa_get_irq()
  hw/ide/piix: Reuse PCIIDEState::{cmd,data}_ops
  hw/ide/sii3112: Reuse PCIIDEState::{cmd,data}_ops
  hw/ide/sii3112: Reuse PCIIDEState::bmdma_ops
  hw/ide: Extract bmdma_clear_status()

 include/hw/ide/pci.h      |  12 ++-
 include/hw/isa/vt82c686.h |   2 -
 hw/ide/cmd646.c           |  59 ++-------------
 hw/ide/pci.c              |  73 ++++++++++++++++++-
 hw/ide/piix.c             |  88 ++++++++--------------
 hw/ide/sii3112.c          | 150 +++++++++++++++++++-------------------
 hw/ide/via.c              |  64 +++-------------
 hw/isa/vt82c686.c         |  23 ++++--
 hw/ide/trace-events       |   7 +-
 9 files changed, 221 insertions(+), 257 deletions(-)

-- 
2.40.0