Re: [PATCH 0/2] hw/pci-bridge: Create PLX Virtual Switch Device

[Nabih Estefan <nabihestefan@google.com>]

Friendly ping on the review!

Thanks,
Nabih


On Tue, Aug 26, 2025 at 1:55 PM Nabih Estefan <nabihestefan@google.com> wrote:
>
> Create a PLX PEX PCIe Virtual Switch implementation that can be used
> for modeling trays. This is a generalized version of the xio3130 switch where
> we can set the PCI information on creation, allowing us to model different
> trays without creating specific devices for all of them. It is used the same
> way the xio3130 switch is used + the PCI Signature information.
>
> The idea is to minimize the difficulty of creating different trays whose
> only difference is recognition by some daemon through PCI signatures.
> Instead of having to create 8 different versions of xio3130 that have
> the same functionality but different PCI Signatures, we create one
> general version where you can declare the PCI Signature information,
> while keeping the same base functionality. This is not meant to fully
> replace xio3130 since that is easier to use without knowledge of the PCI
> Signature, this is meant to decrease the difficulty of creating switch
> trays that require certain PCI information for recognition without any
> significant change from a normal PLX Virtual Switch functionality.
>
> Changes from v1&2: Updating different formatting and API changes that
> ocurred QEMU-wide since these patches were first staged in 8.1.
>
> Signed-off-by: Nabih Estefan <nabihestefan@google.com>
> Signed-off-by: Patrick Venture <venture@google.com>
>
> Nabih Estefan (2):
>   hw/pci-bridge: Create Initial revision for PLX Virtual Switch
>   MAINTAINERS: Add entry for PLX VSwitches
>
>  MAINTAINERS                            |   6 +
>  hw/pci-bridge/Kconfig                  |   5 +
>  hw/pci-bridge/meson.build              |   1 +
>  hw/pci-bridge/plx_vswitch_downstream.c | 188 +++++++++++++++++++++++++
>  hw/pci-bridge/plx_vswitch_upstream.c   | 178 +++++++++++++++++++++++
>  include/hw/pci-bridge/plx_vswitch.h    |  43 ++++++
>  6 files changed, 421 insertions(+)
>  create mode 100644 hw/pci-bridge/plx_vswitch_downstream.c
>  create mode 100644 hw/pci-bridge/plx_vswitch_upstream.c
>  create mode 100644 include/hw/pci-bridge/plx_vswitch.h
>
> --
> 2.51.0.318.gd7df087d1a-goog
>