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From: Xiaowei Bao <xiaowei.bao@nxp.com>
To: Kishon Vijay Abraham I <kishon@ti.com>,
	"bhelgaas@google.com" <bhelgaas@google.com>,
	"robh+dt@kernel.org" <robh+dt@kernel.org>,
	"mark.rutland@arm.com" <mark.rutland@arm.com>,
	"shawnguo@kernel.org" <shawnguo@kernel.org>,
	Leo Li <leoyang.li@nxp.com>,
	"lorenzo.pieralisi@arm.co" <lorenzo.pieralisi@arm.co>,
	"arnd@arndb.de" <arnd@arndb.de>,
	"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"M.h. Lian" <minghuan.lian@nxp.com>,
	Mingkai Hu <mingkai.hu@nxp.com>, Roy Zang <roy.zang@nxp.com>,
	"jingoohan1@gmail.com" <jingoohan1@gmail.com>,
	"gustavo.pimentel@synopsys.com" <gustavo.pimentel@synopsys.com>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
	"andrew.murray@arm.com" <andrew.murray@arm.com>
Subject: RE: [PATCH v2 06/10] PCI: layerscape: Modify the way of getting capability with different PEX
Date: Fri, 23 Aug 2019 02:39:13 +0000
Message-ID: <AM5PR04MB3299DE7B57F31EA405E4FCBCF5A40@AM5PR04MB3299.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <0c02ac52-e4b1-8071-bf9e-d10b28fc9029@ti.com>



> -----Original Message-----
> From: Kishon Vijay Abraham I <kishon@ti.com>
> Sent: 2019年8月22日 19:44
> To: Xiaowei Bao <xiaowei.bao@nxp.com>; bhelgaas@google.com;
> robh+dt@kernel.org; mark.rutland@arm.com; shawnguo@kernel.org; Leo Li
> <leoyang.li@nxp.com>; lorenzo.pieralisi@arm.co; 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>;
> jingoohan1@gmail.com; gustavo.pimentel@synopsys.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; andrew.murray@arm.com
> Subject: Re: [PATCH v2 06/10] PCI: layerscape: Modify the way of getting
> capability with different PEX
> 
> Hi,
> 
> On 22/08/19 4:52 PM, 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.
> 
> please use different pci_epc_features table for different boards.
Thanks, I think that it will be more flexible to dynamically get MSI or MSIX capability,
Thus, we will not need to define the pci_epc_feature for different boards.
> 
> Thanks
> Kishon
> >
> > Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
> > ---
> > v2:
> >  - Remove the repeated assignment code.
> >
> >  drivers/pci/controller/dwc/pci-layerscape-ep.c | 26
> > +++++++++++++++++++-------
> >  1 file changed, 19 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > b/drivers/pci/controller/dwc/pci-layerscape-ep.c
> > index 4e92a95..8461f62 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 +146,11 @@ 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->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);
> >

  reply index

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-22 11:22 [PATCH v2 01/10] PCI: designware-ep: Add multiple PFs support for DWC Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 02/10] PCI: designware-ep: Add the doorbell mode of MSI-X in EP mode Xiaowei Bao
2019-08-23 13:35   ` Andrew Murray
2019-08-23 23:51     ` Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 03/10] PCI: designware-ep: Move the function of getting MSI capability forward Xiaowei Bao
2019-08-23 13:38   ` Andrew Murray
2019-08-24  0:20     ` Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 04/10] dt-bindings: pci: layerscape-pci: add compatible strings for ls1088a and ls2088a Xiaowei Bao
2019-08-27 22:26   ` Rob Herring
2019-08-29  9:19     ` Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 05/10] PCI: layerscape: Fix some format issue of the code Xiaowei Bao
2019-08-23 13:45   ` Andrew Murray
2019-08-24  0:00     ` Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 06/10] PCI: layerscape: Modify the way of getting capability with different PEX Xiaowei Bao
2019-08-22 11:43   ` Kishon Vijay Abraham I
2019-08-23  2:39     ` Xiaowei Bao [this message]
2019-08-23  3:39       ` Kishon Vijay Abraham I
2019-08-23  4:13         ` Xiaowei Bao
2019-09-02 13:36           ` Andrew Murray
2019-09-03  2:11             ` Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 07/10] PCI: layerscape: Modify the MSIX to the doorbell way Xiaowei Bao
2019-08-23 13:58   ` Andrew Murray
2019-08-24  0:08     ` Xiaowei Bao
2019-08-27 13:25       ` Andrew Murray
2019-08-28  2:49         ` Xiaowei Bao
2019-08-29  5:13         ` Kishon Vijay Abraham I
2019-11-05 12:37           ` Lorenzo Pieralisi
2019-11-06  9:33             ` Xiaowei Bao
2019-11-06  9:40           ` Gustavo Pimentel
2019-11-06 10:03             ` Xiaowei Bao
2019-11-06 13:39             ` Kishon Vijay Abraham I
2019-11-06 15:40               ` Gustavo Pimentel
2019-08-22 11:22 ` [PATCH v2 08/10] PCI: layerscape: Add EP mode support for ls1088a and ls2088a Xiaowei Bao
2019-08-23 14:27   ` Andrew Murray
2019-08-24  0:18     ` Xiaowei Bao
2019-08-24  6:45       ` christophe leroy
2019-08-25  3:07         ` Xiaowei Bao
2019-08-27 14:48           ` Andrew Murray
2019-08-28  3:25             ` Xiaowei Bao
2019-08-26  9:49     ` Xiaowei Bao
2019-08-27 13:34       ` Andrew Murray
2019-08-28  4:29         ` Xiaowei Bao
2019-08-28  9:01           ` Andrew Murray
2019-08-29  2:03             ` Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 09/10] arm64: dts: layerscape: Add PCIe EP node for ls1088a Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 10/10] misc: pci_endpoint_test: Add LS1088a in pci_device_id table Xiaowei Bao
2019-08-23 13:25 ` [PATCH v2 01/10] PCI: designware-ep: Add multiple PFs support for DWC Andrew Murray
2019-08-23 23:50   ` Xiaowei Bao
2019-08-27 13:10     ` Andrew Murray
2019-08-28  7:22       ` Xiaowei Bao

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