linux-kernel - Re: [PATCH] PCI: qcom: Add support for handling MSIs from 8 endpoints

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Message-ID: <20220314052216.GA10218@workstation>
Date:   Mon, 14 Mar 2022 10:52:16 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Cc:     bjorn.andersson@...aro.org, bhelgaas@...gle.com,
        svarbanov@...sol.com, robh@...nel.org, linux-pci@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI: qcom: Add support for handling MSIs from 8 endpoints

On Wed, Feb 23, 2022 at 10:01:45AM +0000, Lorenzo Pieralisi wrote:
> On Tue, Dec 14, 2021 at 03:43:19PM +0530, Manivannan Sadhasivam wrote:
> > The DWC controller used in the Qcom Platforms are capable of addressing the
> > MSIs generated from 8 different endpoints each with 32 vectors (256 in
> > total). Currently the driver is using the default value of addressing the
> > MSIs from 1 endpoint only. Extend it by passing the MAX_MSI_IRQS to the
> > num_vectors field of pcie_port structure.
> > 
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> > ---
> >  drivers/pci/controller/dwc/pcie-qcom.c | 1 +
> >  1 file changed, 1 insertion(+)
> 
> Need an ACK from qcom maintainers.
> 

I think this one can be merged now.

Thanks,
Mani

> Thanks,
> Lorenzo
> 
> > diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
> > index 1c3d1116bb60..8a4c08d815a5 100644
> > --- a/drivers/pci/controller/dwc/pcie-qcom.c
> > +++ b/drivers/pci/controller/dwc/pcie-qcom.c
> > @@ -1550,6 +1550,7 @@ static int qcom_pcie_probe(struct platform_device *pdev)
> >  	pci->dev = dev;
> >  	pci->ops = &dw_pcie_ops;
> >  	pp = &pci->pp;
> > +	pp->num_vectors = MAX_MSI_IRQS;
> >  
> >  	pcie->pci = pci;
> >  
> > -- 
> > 2.25.1
> >