| Message ID | 20190815083716.4715-5-xiaowei.bao@nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [01/10] PCI: designware-ep: Add multiple PFs support for DWC | expand |
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)? 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 >
> -----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 > >
On Fri, Aug 16, 2019 at 03:00:00AM +0000, Xiaowei Bao wrote: > > > > -----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. ls_epc is kzalloc'd and so all zeros, so you get false for free. I think you can remove these two lines (or all three if you don't care that linkup_notifier isn't explicitly set). Thanks, Andrew Murray > > > > 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 > > >
> -----Original Message----- > From: Andrew Murray <andrew.murray@arm.com> > Sent: 2019年8月16日 18:26 > 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; Z.q. Hou > <zhiqiang.hou@nxp.com> > Subject: Re: [PATCH 05/10] PCI: layerscape: Modify the way of getting > capability with different PEX > > On Fri, Aug 16, 2019 at 03:00:00AM +0000, Xiaowei Bao wrote: > > > > > > > -----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. > > ls_epc is kzalloc'd and so all zeros, so you get false for free. I think you can > remove these two lines (or all three if you don't care that linkup_notifier isn't > explicitly set). Agree, This is correct, thanks a lot. > > Thanks, > > Andrew Murray > > > > > > > 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 > > > >
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, + 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);
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(-)