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Re: [Qemu-devel] [PATCH 3/3] ioh3420: Support ARI forwarding
From: |
Knut Omang |
Subject: |
Re: [Qemu-devel] [PATCH 3/3] ioh3420: Support ARI forwarding |
Date: |
Wed, 20 Aug 2014 11:22:05 +0200 |
On Wed, 2014-08-20 at 11:57 +0300, Marcel Apfelbaum wrote:
> On Wed, 2014-08-20 at 08:53 +0200, Knut Omang wrote:
> > Enable the PCIe capability bit that indicates that this port is able to
> > support
> > and forward requests to > 8 functions for ARI capable devices.
> >
> > Signed-off-by: Knut Omang <address@hidden>
> > ---
> > hw/pci-bridge/ioh3420.c | 7 +++++++
> > 1 file changed, 7 insertions(+)
> >
> > diff --git a/hw/pci-bridge/ioh3420.c b/hw/pci-bridge/ioh3420.c
> > index 8f6c8b0..c14ea6b 100644
> > --- a/hw/pci-bridge/ioh3420.c
> > +++ b/hw/pci-bridge/ioh3420.c
> > @@ -92,8 +92,10 @@ static void ioh3420_reset(DeviceState *qdev)
> >
> > static int ioh3420_initfn(PCIDevice *d)
> > {
> > + PCIBridge* br = PCI_BRIDGE(d);
> > PCIEPort *p = PCIE_PORT(d);
> > PCIESlot *s = PCIE_SLOT(d);
> > + uint8_t *exp_cap;
> > int rc;
> > char tmp[100];
> > sprintf(tmp, "pcie_port.%d", s->slot);
> > @@ -121,6 +123,10 @@ static int ioh3420_initfn(PCIDevice *d)
> > if (rc < 0) {
> > goto err_msi;
> > }
> > + /* Support ARI forwarding */
> > + exp_cap = d->config + d->exp.exp_cap;
> > + pci_word_test_and_set_mask(exp_cap + PCI_EXP_DEVCAP2,
> > PCI_EXP_DEVCAP2_ARI);
> > +
> Hi,
>
> I think is better to move the implementation to a function, say
> pcie_cap_ari_init
> and place it into hw/pci/pcie.c so other devices like downstream ports can
> use it.
Yes, definitely - I'll fix that, thanks.
Knut
> Thanks,
> Marcel
>
> > pcie_cap_deverr_init(d);
> > pcie_cap_slot_init(d, s->slot);
> > pcie_chassis_create(s->chassis);
> > @@ -151,6 +157,7 @@ err_bridge:
> > static void ioh3420_exitfn(PCIDevice *d)
> > {
> > PCIESlot *s = PCIE_SLOT(d);
> > + PCIBridge* br = PCI_BRIDGE(d);
> >
> > pcie_aer_exit(d);
> > pcie_chassis_del_slot(s);
>
>
>