[PATCH v2 06/10] PCI: layerscape: Modify the way of getting capability with different PEX

From: Xiaowei Bao <xiaowei.bao@nxp.com>
To: bhelgaas@google.com, robh+dt@kernel.org, mark.rutland@arm.com,
	shawnguo@kernel.org, leoyang.li@nxp.com, kishon@ti.com,
	lorenzo.pieralisi@arm.co, arnd@arndb.de,
	gregkh@linuxfoundation.org, minghuan.Lian@nxp.com,
	mingkai.hu@nxp.com, 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
Cc: Xiaowei Bao <xiaowei.bao@nxp.com>
Subject: [PATCH v2 06/10] PCI: layerscape: Modify the way of getting capability with different PEX
Date: Thu, 22 Aug 2019 19:22:38 +0800	[thread overview]
Message-ID: <20190822112242.16309-6-xiaowei.bao@nxp.com> (raw)
In-Reply-To: <20190822112242.16309-1-xiaowei.bao@nxp.com>

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>
---
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);
-- 
2.9.5

