[PATCH v2 00/12] hw: Strengthen SysBus & QBus API

[Philippe Mathieu-Daudé]

Hi,

This series ensure:

- qbus_new() and sysbus_init_mmio() are called *before*
  a device is realized,
- sysbus_mmio_map() is called *after* it is realized.

First we fix some abuse, then we enforce in qdev/sysbus
core code.

There is still a failure in PXA2xx:

  qemu-system-aarch64: sysbus_init_mmio(type:pxa2xx_pic) but object is realized

Apparently it cames from commit 3f6c925f37 ("Use i2c_slave_init() to
allocate the PXA (dummy) I2C slave"), which I presume was how to model
slave<->master transactions *before* I2C bus modelling.

Based-on: <20231018133059.85765-1-philmd@linaro.org>
          "hw/ppc: SysBus simplifications" [1]
Based-on: <20231018131220.84380-1-philmd@linaro.org>
          "hw/arm/pxa2xx: SysBus/QDev fixes" [2]

v1: 20231018141151.87466-1-philmd@linaro.org/">https://lore.kernel.org/qemu-devel/20231018141151.87466-1-philmd@linaro.org/
[1] 20231018133059.85765-1-philmd@linaro.org/">https://lore.kernel.org/qemu-devel/20231018133059.85765-1-philmd@linaro.org/
[2] 20231018131220.84380-1-philmd@linaro.org/">https://lore.kernel.org/qemu-devel/20231018131220.84380-1-philmd@linaro.org/

Philippe Mathieu-Daudé (12):
  hw/i386/amd_iommu: Do not use SysBus API to map local MMIO region
  hw/i386/intel_iommu: Do not use SysBus API to map local MMIO region
  hw/misc/allwinner-dramc: Move sysbus_mmio_map call from init ->
    realize
  hw/misc/allwinner-dramc: Do not use SysBus API to map local MMIO
    region
  hw/pci-host/bonito: Do not use SysBus API to map local MMIO region
  hw/acpi: Realize ACPI_GED sysbus device before accessing it
  hw/arm/virt: Realize ARM_GICV2M sysbus device before accessing it
  hw/isa: Realize ISA BUS sysbus device before accessing it
  hw/s390x/css-bridge: Realize sysbus device before accessing it
  hw/qdev: Ensure parent device is not realized before adding bus
  hw/sysbus: Ensure device is not realized before adding MMIO region
  hw/sysbus: Ensure device is realized before mapping it

 hw/arm/virt.c                 |  5 ++---
 hw/core/bus.c                 |  7 +++++++
 hw/core/sysbus.c              | 13 +++++++++++++
 hw/i386/amd_iommu.c           |  5 ++---
 hw/i386/intel_iommu.c         |  5 ++---
 hw/i386/microvm.c             |  2 +-
 hw/isa/isa-bus.c              | 11 +++++++++--
 hw/loongarch/virt.c           |  2 +-
 hw/misc/allwinner-r40-dramc.c | 20 +++++++++-----------
 hw/pci-host/bonito.c          | 32 ++++++++++++++++----------------
 hw/s390x/css-bridge.c         |  7 +++----
 11 files changed, 65 insertions(+), 44 deletions(-)

-- 
2.41.0