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    Subject[PATCH v2 02/13] powerpc/powernv: Set correct configuration space size for opencapi devices
    Date
    From: Andrew Donnellan <andrew.donnellan@au1.ibm.com>

    The configuration space for opencapi devices doesn't have a PCI
    Express capability, therefore confusing linux in thinking it's of an
    old PCI type with a 256-byte configuration space size, instead of the
    desired 4k. So add a PCI fixup to declare the correct size.

    Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
    Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
    ---
    arch/powerpc/platforms/powernv/pci-ioda.c | 13 +++++++++++++
    1 file changed, 13 insertions(+)

    diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
    index e780263a14ee..d5af700820f3 100644
    --- a/arch/powerpc/platforms/powernv/pci-ioda.c
    +++ b/arch/powerpc/platforms/powernv/pci-ioda.c
    @@ -4080,6 +4080,19 @@ void __init pnv_pci_init_npu2_opencapi_phb(struct device_node *np)
    pnv_pci_init_ioda_phb(np, 0, PNV_PHB_NPU_OCAPI);
    }

    +static void pnv_npu2_opencapi_cfg_size_fixup(struct pci_dev *dev)
    +{
    + struct pci_controller *hose = pci_bus_to_host(dev->bus);
    + struct pnv_phb *phb = hose->private_data;
    +
    + if (!machine_is(powernv))
    + return;
    +
    + if (phb->type == PNV_PHB_NPU_OCAPI)
    + dev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
    +}
    +DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, pnv_npu2_opencapi_cfg_size_fixup);
    +
    void __init pnv_pci_init_ioda_hub(struct device_node *np)
    {
    struct device_node *phbn;
    --
    2.14.1
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