[UNIKRAFT PATCH RFCv2 00/27] Impelment virtio_mmio and pci ecam controller for arm64 kvm plat

[Jia He <justin.he@xxxxxxx>]

To support virtio-* family device, we have 2 choices (virtio mmio, virtio pci)
on arm64 kvm plat. This patch series enable the support of virtio mmio. virtio
pci needs pci controller ECAM mode in arm64 Unikraft.

Previously, I proposed a separated series at [1], Julien had given some
comments including using fdt_get_address and refining the platform device
probing sequence. This series address them, but prevent changing too much
in original virtio mmio series.

Patch 1-5 implement the platform bus and virtio mmio skeleton.
Patch 8-10 implement the pci ecam skeleton
Patch 12-13 introduce the new probing interface for virtio mmio and pci
      on arm.
Patch 7,11,14,15,16 lib/fdt or ofw/fdt changes
Patch 17-19 split the arch specific pci bus codes into different directory
Else are the bug fixing or minor changes.

Test
====
The test case is a simple httpreply app.
test qemu cmdline:
- for virtio mmio
-device virtio-net-device,id=net1,netdev=hostnet1,mac=52:54:00:09:a4:38
- for virtio pci
-device 
virtio-net-pci,id=net0,netdev=hostnet0,mac=52:54:00:09:a4:31,disable-modern=on

Besides, I also tested it with nginx app which was suggested by Felipe. ping
and wget both worked. But there is still some occasional crash which I can't
address them all. But I am not sure the crash is irrelevant/relevant to this
patch series. 

[1] 
https://lists.xenproject.org/archives/html/minios-devel/2019-10/msg00688.html

Changes:
========
v2: Address the comments from felipe
  - fix the compilation warnings
  - change the better memory barriar for virtio communication
  - fix a bug in virtio-9p
  - make it compilable for individual patch
v1: 
https://lists.xenproject.org/archives/html/minios-devel/2020-03/msg00056.html

Jia He (27):
  plat/virtio: Introduce several helpers for virtio ring
  plat/platform: Introduce new platform bus
  plat/virtio: Support virtio_cread/cwrite on arm64
  plat/virtio: Add new virtio_mmio device/driver on arm64
  build: Enable the platform bus and virtio_mmio device on arm64
  plat/kvm: arm64: Fix arm64 memory layout for pcie ecam
  plat/ofw: Export fdt_find_irq_parent_offset
  plat/pci_ecam: Introduce pci/pci_ecam.h
  plat/pci_ecam: Introduce pci ecam skeleton
  lib/ukbus: Adjust default bus register priority
  plat/ofw: Add fdt_node_offset_idx_by_compatible_list
  plat/platform_bus: Add probe/match interface for platform devices
  plat/virtio_mmio: Implement platform probe for virtio_mmio
  plat/ofw: Support completed ranges mapping
  lib/fdt: Fix fdt_address_cell and fdt_size_cell
  plat/ofw: Add fdt_prop_read_bool
  plat/pci_bus: Split specific code into arch directory
  plat/pci_bus: arm64: Implement arch specific add/probe interfaces on
    arm64
  build: Make KVM_PCI default enable on arm64
  plat/pci_bus: Change the type of pci_device.base from u16 to unsigned
    long
  build: Enable pci library on arm64
  plat/pci_ecam: Fix a lot compilation warnings in pci_ecam
  plat/virtio: Fix virtio net device mac negotiation
  plat/virtio: Change the type of irq,base from u16 to u64 for arm64
  plat/virtio: Use better iormb/iowmb on arm64
  plat/virtio_9p: Fix max virtqueue number 1024 on arm64
  plat/platform_bus,virtio_mmio: Avoid useless log storm

 lib/fdt/exportsyms.uk                       |   1 +
 lib/fdt/fdt_addresses.c                     |  57 +-
 lib/ukbus/include/uk/bus.h                  |  16 +-
 plat/common/arm/pci_bus_arm64.c             | 200 +++++++
 plat/common/include/arm/arm64/cpu_defs.h    |   3 +
 plat/common/include/pci/pci_bus.h           | 105 +++-
 plat/common/include/pci/pci_ecam.h          | 101 ++++
 plat/common/include/platform_bus.h          | 116 +++++
 plat/common/pci_bus.c                       | 167 +-----
 plat/common/pci_ecam.c                      | 524 +++++++++++++++++++
 plat/common/platform_bus.c                  | 236 +++++++++
 plat/common/x86/pci_bus_x86.c               | 174 +++++++
 plat/drivers/include/ofw/fdt.h              |  74 +++
 plat/drivers/include/virtio/virtio_config.h |  73 ++-
 plat/drivers/include/virtio/virtio_mmio.h   | 137 +++++
 plat/drivers/include/virtio/virtqueue.h     |  33 ++
 plat/drivers/ofw/fdt.c                      |  81 ++-
 plat/drivers/virtio/virtio_9p.c             |   2 +-
 plat/drivers/virtio/virtio_mmio.c           | 550 ++++++++++++++++++++
 plat/drivers/virtio/virtio_net.c            |  15 +-
 plat/drivers/virtio/virtio_pci.c            |   6 +-
 plat/drivers/virtio/virtio_ring.c           |  32 ++
 plat/kvm/Config.uk                          |  14 +-
 plat/kvm/Makefile.uk                        |  29 +-
 plat/kvm/arm/pagetable64.S                  |  22 +-
 25 files changed, 2537 insertions(+), 231 deletions(-)
 create mode 100644 plat/common/arm/pci_bus_arm64.c
 create mode 100644 plat/common/include/pci/pci_ecam.h
 create mode 100644 plat/common/include/platform_bus.h
 create mode 100644 plat/common/pci_ecam.c
 create mode 100644 plat/common/platform_bus.c
 create mode 100644 plat/common/x86/pci_bus_x86.c
 create mode 100644 plat/drivers/include/virtio/virtio_mmio.h
 create mode 100644 plat/drivers/virtio/virtio_mmio.c

-- 
2.17.1