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[Qemu-ppc] [RFC for-4.1 0/5] Simplify some not-really-necessary PCI bus
From: |
David Gibson |
Subject: |
[Qemu-ppc] [RFC for-4.1 0/5] Simplify some not-really-necessary PCI bus callbacks |
Date: |
Tue, 2 Apr 2019 16:40:23 +1100 |
c2077e2c "pci: Adjust PCI config limit based on bus topology"
introduced checking the availability of extended config space for
PCI-E devices which are in a bus topology that doesn't permit extended
config space access (e.g. under PCI-E to PCI then PCI to PCI-E
bridges).
This caused some problems for the spapr para-virtual PCI bus which
_does_ allow extended config space access, despite acting in most ways
like a vanilla PCI bus.
Greg Kurz has posted a proposed fix for that against qemu-4.0 - for
easy reference I've included that as the first two patches of this
series.
The rest of the series simplfies both the PCI-E config space access
and pci_bus_is_root() logic, using a new flags field on the PCI Bus
instance.
David Gibson (3):
pcie: Remove redundant test in pcie_mmcfg_data_read()
pci: Simplify pci_bus_is_root()
pcie: Simplify pci_adjust_config_limit()
Greg Kurz (2):
pci: Allow PCI bus subtypes to support extended config space accesses
spapr_pci: Fix extended config space accesses
hw/pci-bridge/pci_expander_bridge.c | 6 -----
hw/pci/pci.c | 40 ++++++++++++++++++++++-------
hw/pci/pci_host.c | 13 +++-------
hw/pci/pcie_host.c | 5 ----
hw/ppc/spapr_pci.c | 20 ++++++++++++++-
hw/virtio/virtio-pci.c | 1 +
include/hw/pci/pci.h | 3 ++-
include/hw/pci/pci_bus.h | 14 +++++++++-
8 files changed, 69 insertions(+), 33 deletions(-)
--
2.20.1
- [Qemu-ppc] [RFC for-4.1 0/5] Simplify some not-really-necessary PCI bus callbacks,
David Gibson <=
- [Qemu-ppc] [RFC for-4.1 5/5] pcie: Simplify pci_adjust_config_limit(), David Gibson, 2019/04/02
- [Qemu-ppc] [RFC for-4.1 1/5] pci: Allow PCI bus subtypes to support extended config space accesses, David Gibson, 2019/04/02
- [Qemu-ppc] [RFC for-4.1 2/5] spapr_pci: Fix extended config space accesses, David Gibson, 2019/04/02
- [Qemu-ppc] [RFC for-4.1 4/5] pci: Simplify pci_bus_is_root(), David Gibson, 2019/04/02
- [Qemu-ppc] [RFC for-4.1 3/5] pcie: Remove redundant test in pcie_mmcfg_data_read(), David Gibson, 2019/04/02