Re: [Qemu-devel] [PATCH 1/5] pci: INTERFACE_LEGACY_PCI_DEVICE and INTERFACE_PCIE_DEVICE interfaces

[Alex Williamson <alex.williamson@redhat.com>]

On Wed, 23 Aug 2017 19:14:41 -0300
Eduardo Habkost <ehabkost@redhat.com> wrote:

> Those two interfaces will be used to indicate which device types
> support legacy PCI or PCI-express buses.  Management software
> will be able to use the qom-list-types QMP command to query that
> information.

Nit, while "legacy PCI" and "conventional PCI" have about the same
number of google hits, I believe the latter is the more correct term.
The quality of hits is certainly a lot better with "conventional".
Calling something "legacy" also spurs an immediate negative reaction
for some folks, "conventional" is more neutral.  Thanks,

Alex

> 
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> ---
>  include/hw/pci/pci.h |  6 ++++++
>  hw/pci/pci.c         | 12 ++++++++++++
>  2 files changed, 18 insertions(+)
> 
> diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
> index e598b09..f5e8ab9 100644
> --- a/include/hw/pci/pci.h
> +++ b/include/hw/pci/pci.h
> @@ -195,6 +195,12 @@ enum {
>  #define PCI_DEVICE_GET_CLASS(obj) \
>       OBJECT_GET_CLASS(PCIDeviceClass, (obj), TYPE_PCI_DEVICE)
>  
> +/* Interface implemented by devices that can be plugged on PCIe buses */
> +#define INTERFACE_PCIE_DEVICE "pci-express-device"
> +
> +/* Interface implemented by devices that can be plugged on legacy PCI buses */
> +#define INTERFACE_LEGACY_PCI_DEVICE "legacy-pci-device"
> +
>  typedef struct PCIINTxRoute {
>      enum {
>          PCI_INTX_ENABLED,
> diff --git a/hw/pci/pci.c b/hw/pci/pci.c
> index 258fbe5..baa3429 100644
> --- a/hw/pci/pci.c
> +++ b/hw/pci/pci.c
> @@ -168,6 +168,16 @@ static const TypeInfo pci_bus_info = {
>      .class_init = pci_bus_class_init,
>  };
>  
> +static const TypeInfo pcie_interface_info = {
> +    .name          = INTERFACE_PCIE_DEVICE,
> +    .parent        = TYPE_INTERFACE,
> +};
> +
> +static const TypeInfo legacy_pci_interface_info = {
> +    .name          = INTERFACE_LEGACY_PCI_DEVICE,
> +    .parent        = TYPE_INTERFACE,
> +};
> +
>  static const TypeInfo pcie_bus_info = {
>      .name = TYPE_PCIE_BUS,
>      .parent = TYPE_PCI_BUS,
> @@ -2645,6 +2655,8 @@ static void pci_register_types(void)
>  {
>      type_register_static(&pci_bus_info);
>      type_register_static(&pcie_bus_info);
> +    type_register_static(&legacy_pci_interface_info);
> +    type_register_static(&pcie_interface_info);
>      type_register_static(&pci_device_type_info);
>  }
>