linux-kernel - Re: [RESEND PATCH v3 3/7] PCI: dwc: artpec6: Populate cpu_addr

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Date:   Thu, 9 Mar 2017 11:21:32 +0100
From:   Niklas Cassel <niklas.cassel@...s.com>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-omap@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     <nsekhar@...com>
Subject: Re: [RESEND PATCH v3 3/7] PCI: dwc: artpec6: Populate cpu_addr_fixup
 ops

Acked-by: Niklas Cassel <niklas.cassel@...s.com>

On 03/09/2017 07:39 AM, Kishon Vijay Abraham I wrote:
> Populate cpu_addr_fixup ops to extract the least 28 bits of the
> corresponding cpu address.
>
> Cc: Niklas Cassel <niklas.cassel@...s.com>
> Acked-by: Joao Pinto <jpinto@...opsys.com>
> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
> ---
>  drivers/pci/dwc/pcie-artpec6.c |   15 ++++++++++-----
>  1 file changed, 10 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/pci/dwc/pcie-artpec6.c b/drivers/pci/dwc/pcie-artpec6.c
> index fcd3ef8..5b3b3af 100644
> --- a/drivers/pci/dwc/pcie-artpec6.c
> +++ b/drivers/pci/dwc/pcie-artpec6.c
> @@ -78,6 +78,11 @@ static void artpec6_pcie_writel(struct artpec6_pcie *artpec6_pcie, u32 offset, u
>  	regmap_write(artpec6_pcie->regmap, offset, val);
>  }
>  
> +static u64 artpec6_pcie_cpu_addr_fixup(u64 pci_addr)
> +{
> +	return pci_addr & ARTPEC6_CPU_TO_BUS_ADDR;
> +}
> +
>  static int artpec6_pcie_establish_link(struct artpec6_pcie *artpec6_pcie)
>  {
>  	struct dw_pcie *pci = artpec6_pcie->pci;
> @@ -142,11 +147,6 @@ static int artpec6_pcie_establish_link(struct artpec6_pcie *artpec6_pcie)
>  	 */
>  	dw_pcie_writel_dbi(pci, MISC_CONTROL_1_OFF, DBI_RO_WR_EN);
>  
> -	pp->io_base &= ARTPEC6_CPU_TO_BUS_ADDR;
> -	pp->mem_base &= ARTPEC6_CPU_TO_BUS_ADDR;
> -	pp->cfg0_base &= ARTPEC6_CPU_TO_BUS_ADDR;
> -	pp->cfg1_base &= ARTPEC6_CPU_TO_BUS_ADDR;
> -
>  	/* setup root complex */
>  	dw_pcie_setup_rc(pp);
>  
> @@ -234,6 +234,10 @@ static int artpec6_add_pcie_port(struct artpec6_pcie *artpec6_pcie,
>  	return 0;
>  }
>  
> +static const struct dw_pcie_ops dw_pcie_ops = {
> +	.cpu_addr_fixup = artpec6_pcie_cpu_addr_fixup,
> +};
> +
>  static int artpec6_pcie_probe(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
> @@ -252,6 +256,7 @@ static int artpec6_pcie_probe(struct platform_device *pdev)
>  		return -ENOMEM;
>  
>  	pci->dev = dev;
> +	pci->ops = &dw_pcie_ops;
>  
>  	artpec6_pcie->pci = pci;
>