[Xen-devel] [PATCH 00/14] Remove old_portio users for memory region PIO mapping

[Alexander Graf <agraf@xxxxxxx>]

When running on PowerPC, we don't have native PIO support. There are a few hacks
around to enable PIO access on PowerPC nevertheless.

The most typical one is the isa-mmio device. It takes MMIO requests and converts
them to PIO requests on the (QEMU internal) PIO bus.

This however is not how real hardware works and it limits us in the ability to
spawn eventfd's on PIO ports which doesn't work with this approach.  Instead,
let's model it more easily. Let's just map the PIO memory region into MMIO
space.

For this to work, we need to get rid of all old_portio struct users, as they
break with this approach. This is what this patch set does. It also converts
the e500 machines and sPAPR to the new memory region model.


Alex

Alexander Graf (14):
  ac97: convert PIO to new memory api read/write
  virtio-pci: convert PIO to new memory api read/write
  es1370: convert PIO to new memory api read/write
  i8254: convert PIO to new memory api read/write
  m48t59: convert PIO to new memory api read/write
  mc146818rtc: convert PIO to new memory api read/write
  pc port92: convert PIO to new memory api read/write
  pckbd: convert PIO to new memory api read/write
  rtl8139: convert PIO to new memory api read/write
  serial: convert PIO to new memory api read/write
  vmport: convert PIO to new memory api read/write
  xen_platform: convert PIO to new memory api read/write
  PPC: e500: Map PIO space into core memory region
  PPC: pseries: Remove hack for PIO window

 hw/ac97.c         |  109 +++++++++++++++++++++++++++++++++++++--------
 hw/es1370.c       |   46 +++++++++++++++----
 hw/i8254.c        |   20 +++++----
 hw/m48t59.c       |   24 ++++++----
 hw/mc146818rtc.c  |   19 +++++---
 hw/pc.c           |   19 +++++---
 hw/pckbd.c        |   48 +++++++++++---------
 hw/ppc/e500.c     |    3 +-
 hw/ppce500_pci.c  |    9 +++-
 hw/rtl8139.c      |   78 +++++++++++++++------------------
 hw/serial.c       |   31 ++++++++-----
 hw/spapr_pci.c    |   44 +------------------
 hw/spapr_pci.h    |    2 +-
 hw/virtio-pci.c   |  126 ++++++++++++++++++++--------------------------------
 hw/vmport.c       |   21 +++++----
 hw/xen_platform.c |   48 ++++++++++++++++----
 16 files changed, 362 insertions(+), 285 deletions(-)


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