RE: [EXT] Re: [PATCHv4 1/2] PCI: layerscape: Add the bar_fixed_64bit property in EP driver.

[Xiaowei Bao]

> -----Original Message-----
> From: Kishon Vijay Abraham I <kishon@xxxxxx>
> Sent: 2019å8æ13æ 12:36
> To: Xiaowei Bao <xiaowei.bao@xxxxxxx>; lorenzo.pieralisi@xxxxxxx;
> bhelgaas@xxxxxxxxxx; M.h. Lian <minghuan.lian@xxxxxxx>; Mingkai Hu
> <mingkai.hu@xxxxxxx>; Roy Zang <roy.zang@xxxxxxx>;
> l.stach@xxxxxxxxxxxxxx; tpiepho@xxxxxxxxxx; Leonard Crestez
> <leonard.crestez@xxxxxxx>; andrew.smirnov@xxxxxxxxx;
> yue.wang@xxxxxxxxxxx; hayashi.kunihiko@xxxxxxxxxxxxx;
> dwmw@xxxxxxxxxxxx; jonnyc@xxxxxxxxxx; linux-pci@xxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx; linuxppc-dev@xxxxxxxxxxxxxxxx;
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Subject: [EXT] Re: [PATCHv4 1/2] PCI: layerscape: Add the bar_fixed_64bit
> property in EP driver.
> 
> Caution: EXT Email
> 
> On 13/08/19 8:23 AM, Xiaowei Bao wrote:
> > The PCIe controller of layerscape just have 4 BARs, BAR0 and BAR1 is
> > 32bit, BAR3 and BAR4 is 64bit, this is determined by hardware,
> 
> Do you mean BAR2 instead of BAR3 here?
Yes.
> 
> Thanks
> Kishon
> 
> > so set the bar_fixed_64bit with 0x14.
> >
> > Signed-off-by: Xiaowei Bao <xiaowei.bao@xxxxxxx>
> > ---
> > v2:
> >  - Replace value 0x14 with a macro.
> > v3:
> >  - No change.
> > v4:
> >  - send the patch again with '--to'.
> >
> >  drivers/pci/controller/dwc/pci-layerscape-ep.c |    1 +
> >  1 files changed, 1 insertions(+), 0 deletions(-)
> >
> > diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > index be61d96..227c33b 100644
> > --- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > +++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > @@ -44,6 +44,7 @@ static int ls_pcie_establish_link(struct dw_pcie *pci)
> >       .linkup_notifier = false,
> >       .msi_capable = true,
> >       .msix_capable = false,
> > +     .bar_fixed_64bit = (1 << BAR_2) | (1 << BAR_4),
> >  };
> >
> >  static const struct pci_epc_features*
> >