[Qemu-devel] [PATCH v4 0/4] ARM: Add support for a generic PCI Express host bridge

[Alexander Graf <agraf@suse.de>]

Linux implements a nice binding to describe a "generic" PCI Express host bridge
using only device tree.

This patch set adds enough emulation logic to expose the parts that are
"generic" as a simple sysbus device and maps it into ARM's virt machine.

With this patch set, we can finally spawn PCI devices on ARM VMs. I was able
to have a fully DRM enabled virtual machine with VGA, e1000 and XHCI (for
keyboard and mouse) up and working.

It's only a small step for QEMU, but a big step for ARM VM's usability.

v1 -> v2:

  - Add documentation links
  - Remove mmio_window_size
  - Add define for pci range types
  - Use 4 PCI INTX IRQ lines

v2 -> v3:

  - Update patch description
  - Increase ecam region to full size
  - Expose number of irqs via define
  - Update header description
  - Update host bridge qom description string
  - Use new Red Hat PCIe host bridge PCI ID
  - Coding style fixes
  - Map ECAM space via alias to limit its size
  - Increase ECAM size to 16 buses
  - Use GPEX IRQ number define
  - Align ECAM region, Document region allocation better
  - Move interrupt-map into irq map function
  - s/FDT_PCI_RANGE_TYPE/FDT_PCI_RANGE_TYPE_MASK/

v3 -> v4:

  - update memory map comment

Alexander Graf (4):
  pci: Allocate PCIe host bridge PCI ID
  pci: Add generic PCIe host bridge
  arm: Add PCIe host bridge in virt machine
  pci: Move PCI VGA to pci.mak

 default-configs/alpha-softmmu.mak    |   2 -
 default-configs/arm-softmmu.mak      |   2 +
 default-configs/i386-softmmu.mak     |   2 -
 default-configs/mips-softmmu.mak     |   2 -
 default-configs/mips64-softmmu.mak   |   2 -
 default-configs/mips64el-softmmu.mak |   2 -
 default-configs/mipsel-softmmu.mak   |   2 -
 default-configs/pci.mak              |   2 +
 default-configs/ppc-softmmu.mak      |   2 -
 default-configs/ppc64-softmmu.mak    |   2 -
 default-configs/ppcemb-softmmu.mak   |   2 -
 default-configs/sparc64-softmmu.mak  |   2 -
 default-configs/x86_64-softmmu.mak   |   2 -
 hw/arm/virt.c                        | 135 ++++++++++++++++++++++++++++--
 hw/pci-host/Makefile.objs            |   1 +
 hw/pci-host/gpex.c                   | 154 +++++++++++++++++++++++++++++++++++
 include/hw/pci-host/gpex.h           |  56 +++++++++++++
 include/hw/pci/pci.h                 |   1 +
 include/sysemu/device_tree.h         |   9 ++
 19 files changed, 355 insertions(+), 27 deletions(-)
 create mode 100644 hw/pci-host/gpex.c
 create mode 100644 include/hw/pci-host/gpex.h

-- 
1.7.12.4