Re: [SeaBIOS] [Qemu-devel] [RFC PATCH 2/2] pci: enable RedHat pci bridges to reserve more buses

[Marcel Apfelbaum]

On 19/07/2017 16:56, Konrad Rzeszutek Wilk wrote:
> On Wed, Jul 19, 2017 at 04:20:14PM +0300, Aleksandr Bezzubikov wrote:
> > In case of RedHat PCI bridges reserve additional buses, which number is provided
>
> It is "Red Hat"
> > in a vendor-specific capability.
>
> And perhaps also a #define ?

Right, please add it to src/hw/pci_ids.h.

Thanks,
Marcel
> > Signed-off-by: Aleksandr Bezzubikov
> >
> > src/fw/pciinit.c | 12 ++++++++++--
> >   1 file changed, 10 insertions(+), 2 deletions(-)
> >
> > diff --git a/src/fw/pciinit.c b/src/fw/pciinit.c
> > index 08221e6..b6f3a01 100644
> > --- a/src/fw/pciinit.c
> > +++ b/src/fw/pciinit.c
> > @@ -578,9 +578,17 @@ pci_bios_init_bus_rec(int bus, u8 *pci_bus)
> >           pci_bios_init_bus_rec(secbus, pci_bus);
> >       if (subbus != *pci_bus) {
> >        u16 vendor = pci_config_readw(bdf, PCI_VENDOR_ID);
> >        u8 res_bus = 0;
> >        if (vendor == 0x1b36) {
> >            u8 cap = pci_find_capability_bdf(bdf, PCI_CAP_ID_VNDR, 0);
> >            if (cap) {
> >                res_bus = pci_config_readb(bdf, cap + 16);
> >            }
> >        }
> >         dprintf(1, "PCI: subordinate bus = 0x%x -> 0x%x\n",
> >                subbus, *pci_bus);
> >        subbus = *pci_bus;
> >                subbus, *pci_bus + res_bus);
> >        subbus = *pci_bus + res_bus;
> >     } else {
> >         dprintf(1, "PCI: subordinate bus = 0x%x\n", subbus);
> >     }