From: Xiaowei Bao <xiaowei.bao@nxp.com>
To: Andrew Murray <andrew.murray@arm.com>
Cc: "mark.rutland@arm.com" <mark.rutland@arm.com>,
Roy Zang <roy.zang@nxp.com>,
"lorenzo.pieralisi@arm.com" <lorenzo.pieralisi@arm.com>,
"arnd@arndb.de" <arnd@arndb.de>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"jingoohan1@gmail.com" <jingoohan1@gmail.com>,
"Z.q. Hou" <zhiqiang.hou@nxp.com>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Leo Li <leoyang.li@nxp.com>, "M.h. Lian" <minghuan.lian@nxp.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"gustavo.pimentel@synopsys.com" <gustavo.pimentel@synopsys.com>,
"bhelgaas@google.com" <bhelgaas@google.com>,
"kishon@ti.com" <kishon@ti.com>,
"shawnguo@kernel.org" <shawnguo@kernel.org>,
Mingkai Hu <mingkai.hu@nxp.com>
Subject: RE: [PATCH 05/10] PCI: layerscape: Modify the way of getting capability with different PEX
Date: Fri, 16 Aug 2019 03:00:00 +0000 [thread overview]
Message-ID: <AM5PR04MB329966792C66E9AAB6C0B30DF5AF0@AM5PR04MB3299.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <20190815125103.GH43882@e119886-lin.cambridge.arm.com>
> -----Original Message-----
> From: Andrew Murray <andrew.murray@arm.com>
> Sent: 2019年8月15日 20:51
> To: Xiaowei Bao <xiaowei.bao@nxp.com>
> Cc: jingoohan1@gmail.com; gustavo.pimentel@synopsys.com;
> bhelgaas@google.com; robh+dt@kernel.org; mark.rutland@arm.com;
> shawnguo@kernel.org; Leo Li <leoyang.li@nxp.com>; kishon@ti.com;
> lorenzo.pieralisi@arm.com; arnd@arndb.de; gregkh@linuxfoundation.org;
> M.h. Lian <minghuan.lian@nxp.com>; Mingkai Hu <mingkai.hu@nxp.com>;
> Roy Zang <roy.zang@nxp.com>; linux-pci@vger.kernel.org;
> devicetree@vger.kernel.org; linux-kernel@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; linuxppc-dev@lists.ozlabs.org
> Subject: Re: [PATCH 05/10] PCI: layerscape: Modify the way of getting
> capability with different PEX
>
> On Thu, Aug 15, 2019 at 04:37:11PM +0800, Xiaowei Bao wrote:
> > The different PCIe controller in one board may be have different
> > capability of MSI or MSIX, so change the way of getting the MSI
> > capability, make it more flexible.
> >
> > Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
> > ---
> > drivers/pci/controller/dwc/pci-layerscape-ep.c | 28
> > +++++++++++++++++++-------
> > 1 file changed, 21 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > index be61d96..9404ca0 100644
> > --- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > +++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > @@ -22,6 +22,7 @@
> >
> > struct ls_pcie_ep {
> > struct dw_pcie *pci;
> > + struct pci_epc_features *ls_epc;
> > };
> >
> > #define to_ls_pcie_ep(x) dev_get_drvdata((x)->dev)
> > @@ -40,25 +41,26 @@ static const struct of_device_id
> ls_pcie_ep_of_match[] = {
> > { },
> > };
> >
> > -static const struct pci_epc_features ls_pcie_epc_features = {
> > - .linkup_notifier = false,
> > - .msi_capable = true,
> > - .msix_capable = false,
> > -};
> > -
> > static const struct pci_epc_features* ls_pcie_ep_get_features(struct
> > dw_pcie_ep *ep) {
> > - return &ls_pcie_epc_features;
> > + struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
> > + struct ls_pcie_ep *pcie = to_ls_pcie_ep(pci);
> > +
> > + return pcie->ls_epc;
> > }
> >
> > static void ls_pcie_ep_init(struct dw_pcie_ep *ep) {
> > struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
> > + struct ls_pcie_ep *pcie = to_ls_pcie_ep(pci);
> > enum pci_barno bar;
> >
> > for (bar = BAR_0; bar <= BAR_5; bar++)
> > dw_pcie_ep_reset_bar(pci, bar);
> > +
> > + pcie->ls_epc->msi_capable = ep->msi_cap ? true : false;
> > + pcie->ls_epc->msix_capable = ep->msix_cap ? true : false;
> > }
> >
> > static int ls_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no, @@
> > -118,6 +120,7 @@ static int __init ls_pcie_ep_probe(struct platform_device
> *pdev)
> > struct device *dev = &pdev->dev;
> > struct dw_pcie *pci;
> > struct ls_pcie_ep *pcie;
> > + struct pci_epc_features *ls_epc;
> > struct resource *dbi_base;
> > int ret;
> >
> > @@ -129,6 +132,10 @@ static int __init ls_pcie_ep_probe(struct
> platform_device *pdev)
> > if (!pci)
> > return -ENOMEM;
> >
> > + ls_epc = devm_kzalloc(dev, sizeof(*ls_epc), GFP_KERNEL);
> > + if (!ls_epc)
> > + return -ENOMEM;
> > +
> > dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> "regs");
> > pci->dbi_base = devm_pci_remap_cfg_resource(dev, dbi_base);
> > if (IS_ERR(pci->dbi_base))
> > @@ -139,6 +146,13 @@ static int __init ls_pcie_ep_probe(struct
> platform_device *pdev)
> > pci->ops = &ls_pcie_ep_ops;
> > pcie->pci = pci;
> >
> > + ls_epc->linkup_notifier = false,
> > + ls_epc->msi_capable = true,
> > + ls_epc->msix_capable = true,
>
> As [msi,msix]_capable is shortly set from ls_pcie_ep_init - is there any reason
> to set them here (to potentially incorrect values)?
This is a INIT value, maybe false is better for msi_capable and msix_capable,
of course, we don't need to set it.
>
> Thanks,
>
> Andrew Murray
>
> > + ls_epc->bar_fixed_64bit = (1 << BAR_2) | (1 << BAR_4),
> > +
> > + pcie->ls_epc = ls_epc;
> > +
> > platform_set_drvdata(pdev, pcie);
> >
> > ret = ls_add_pcie_ep(pcie, pdev);
> > --
> > 2.9.5
> >
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next prev parent reply other threads:[~2019-08-16 3:00 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-15 8:37 [PATCH 01/10] PCI: designware-ep: Add multiple PFs support for DWC Xiaowei Bao
2019-08-15 8:37 ` [PATCH 02/10] PCI: designware-ep: Add the doorbell mode of MSI-X in EP mode Xiaowei Bao
2019-08-15 11:53 ` Andrew Murray
2019-08-16 2:58 ` Xiaowei Bao
2019-08-16 10:20 ` Andrew Murray
2019-08-16 11:01 ` Xiaowei Bao
2019-08-16 10:49 ` Kishon Vijay Abraham I
2019-08-16 11:14 ` Xiaowei Bao
2019-08-15 8:37 ` [PATCH 03/10] PCI: designware-ep: Move the function of getting MSI capability forward Xiaowei Bao
2019-08-15 8:37 ` [PATCH 04/10] dt-bindings: pci: layerscape-pci: add compatible strings for ls1088a and ls2088a Xiaowei Bao
2019-08-15 8:37 ` [PATCH 05/10] PCI: layerscape: Modify the way of getting capability with different PEX Xiaowei Bao
2019-08-15 12:51 ` Andrew Murray
2019-08-16 3:00 ` Xiaowei Bao [this message]
2019-08-16 10:25 ` Andrew Murray
2019-08-16 11:03 ` Xiaowei Bao
2019-08-15 8:37 ` [PATCH 06/10] PCI: layerscape: Modify the MSIX to the doorbell way Xiaowei Bao
2019-08-15 8:37 ` [PATCH 07/10] PCI: layerscape: Fix some format issue of the code Xiaowei Bao
2019-08-15 8:37 ` [PATCH 08/10] dt-bindings: PCI: Add the pf-offset property Xiaowei Bao
2019-08-27 16:26 ` Rob Herring
2019-08-15 8:37 ` [PATCH 09/10] arm64: dts: layerscape: Add PCIe EP node for ls1088a Xiaowei Bao
2019-08-15 8:37 ` [PATCH 10/10] misc: pci_endpoint_test: Add LS1088a in pci_device_id table Xiaowei Bao
2019-08-15 11:31 ` [PATCH 01/10] PCI: designware-ep: Add multiple PFs support for DWC Andrew Murray
2019-08-16 2:55 ` Xiaowei Bao
2019-08-16 9:44 ` Andrew Murray
2019-08-16 11:00 ` Xiaowei Bao
2019-08-16 12:35 ` Andrew Murray
2019-08-16 15:11 ` Xiaowei Bao
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