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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR03MB2699 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add the property of inbound and outbound windows number for ep driver. Signed-off-by: Bao Xiaowei Acked-by: Minghuan Lian --- v2: - no change v3: - modify the commit message arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi index 06b5e12d04d8..f8332669663c 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi @@ -674,6 +674,8 @@ device_type = "pci"; dma-coherent; num-lanes = <4>; + num-ib-windows = <6>; + num-ob-windows = <6>; bus-range = <0x0 0xff>; ranges = <0x81000000 0x0 0x00000000 0x40 0x00010000 0x0 0x00010000 /* downstream I/O */ 0x82000000 0x0 0x40000000 0x40 0x40000000 0x0 0x40000000>; /* non-prefetchable memory */ @@ -699,6 +701,8 @@ device_type = "pci"; dma-coherent; num-lanes = <2>; + num-ib-windows = <6>; + num-ob-windows = <6>; bus-range = <0x0 0xff>; ranges = <0x81000000 0x0 0x00000000 0x48 0x00010000 0x0 0x00010000 /* downstream I/O */ 0x82000000 0x0 0x40000000 0x48 0x40000000 0x0 0x40000000>; /* non-prefetchable memory */ @@ -724,6 +728,8 @@ device_type = "pci"; dma-coherent; num-lanes = <2>; + num-ib-windows = <6>; + num-ob-windows = <6>; bus-range = <0x0 0xff>; ranges = <0x81000000 0x0 0x00000000 0x50 0x00010000 0x0 0x00010000 /* downstream I/O */ 0x82000000 0x0 0x40000000 0x50 0x40000000 0x0 0x40000000>; /* non-prefetchable memory */ From patchwork Fri Nov 10 02:49:25 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaowei Bao X-Patchwork-Id: 836596 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3yY4k31gDjz9sxR for ; Fri, 10 Nov 2017 14:08:43 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755854AbdKJDIO (ORCPT ); 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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN2PR03MB2365 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add the pcie controller ep function support of layerscape base on pcie ep framework. Signed-off-by: Bao Xiaowei --- v2: - fix the ioremap function used but no ioumap issue - optimize the code structure - add code comments v3: - fix the msi outband window request failed issue drivers/pci/dwc/pci-layerscape.c | 124 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 118 insertions(+), 6 deletions(-) diff --git a/drivers/pci/dwc/pci-layerscape.c b/drivers/pci/dwc/pci-layerscape.c index 87fa486bee2c..d787375528eb 100644 --- a/drivers/pci/dwc/pci-layerscape.c +++ b/drivers/pci/dwc/pci-layerscape.c @@ -34,7 +34,12 @@ /* PEX Internal Configuration Registers */ #define PCIE_STRFMR1 0x71c /* Symbol Timer & Filter Mask Register1 */ +#define PCIE_DBI2_BASE 0x1000 /* DBI2 base address*/ +#define PCIE_MSI_MSG_DATA_OFF 0x5c /* MSI Data register address*/ +#define PCIE_MSI_OB_SIZE 4096 +#define PCIE_MSI_ADDR_OFFSET (1024 * 1024) #define PCIE_IATU_NUM 6 +#define PCIE_EP_ADDR_SPACE_SIZE 0x100000000 struct ls_pcie_drvdata { u32 lut_offset; @@ -44,12 +49,20 @@ struct ls_pcie_drvdata { const struct dw_pcie_ops *dw_pcie_ops; }; +struct ls_pcie_ep { + dma_addr_t msi_phys_addr; + void __iomem *msi_virt_addr; + u64 msi_msg_addr; + u16 msi_msg_data; +}; + struct ls_pcie { struct dw_pcie *pci; void __iomem *lut; struct regmap *scfg; const struct ls_pcie_drvdata *drvdata; int index; + struct ls_pcie_ep *pcie_ep; }; #define to_ls_pcie(x) dev_get_drvdata((x)->dev) @@ -263,6 +276,100 @@ static const struct of_device_id ls_pcie_of_match[] = { { }, }; +static void ls_pcie_raise_msi_irq(struct ls_pcie_ep *pcie_ep) +{ + iowrite32(pcie_ep->msi_msg_data, pcie_ep->msi_virt_addr); +} + +static int ls_pcie_raise_irq(struct dw_pcie_ep *ep, + enum pci_epc_irq_type type, u8 interrupt_num) +{ + struct dw_pcie *pci = to_dw_pcie_from_ep(ep); + struct ls_pcie *pcie = to_ls_pcie(pci); + struct ls_pcie_ep *pcie_ep = pcie->pcie_ep; + u32 free_win; + + /* get the msi message address and msi message data */ + pcie_ep->msi_msg_addr = ioread32(pci->dbi_base + MSI_MESSAGE_ADDR_L32) | + (((u64)ioread32(pci->dbi_base + MSI_MESSAGE_ADDR_U32)) << 32); + pcie_ep->msi_msg_data = ioread16(pci->dbi_base + PCIE_MSI_MSG_DATA_OFF); + + /* request and config the outband window for msi */ + free_win = find_first_zero_bit(&ep->ob_window_map, + sizeof(ep->ob_window_map)); + if (free_win >= ep->num_ob_windows) { + dev_err(pci->dev, "no free outbound window\n"); + return -ENOMEM; + } + + dw_pcie_prog_outbound_atu(pci, free_win, PCIE_ATU_TYPE_MEM, + pcie_ep->msi_phys_addr, + pcie_ep->msi_msg_addr, + PCIE_MSI_OB_SIZE); + + set_bit(free_win, &ep->ob_window_map); + + /* generate the msi interrupt */ + ls_pcie_raise_msi_irq(pcie_ep); + + /* release the outband window of msi */ + dw_pcie_disable_atu(pci, free_win, DW_PCIE_REGION_OUTBOUND); + clear_bit(free_win, &ep->ob_window_map); + + return 0; +} + +static struct dw_pcie_ep_ops pcie_ep_ops = { + .raise_irq = ls_pcie_raise_irq, +}; + +static int __init ls_add_pcie_ep(struct ls_pcie *pcie, + struct platform_device *pdev) +{ + struct dw_pcie *pci = pcie->pci; + struct device *dev = pci->dev; + struct dw_pcie_ep *ep; + struct ls_pcie_ep *pcie_ep; + struct resource *cfg_res; + int ret; + + ep = &pci->ep; + ep->ops = &pcie_ep_ops; + + pcie_ep = devm_kzalloc(dev, sizeof(*pcie_ep), GFP_KERNEL); + if (!pcie_ep) + return -ENOMEM; + + pcie->pcie_ep = pcie_ep; + + cfg_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "config"); + if (cfg_res) { + ep->phys_base = cfg_res->start; + ep->addr_size = PCIE_EP_ADDR_SPACE_SIZE; + } else { + dev_err(dev, "missing *config* space\n"); + return -ENODEV; + } + + pcie_ep->msi_phys_addr = ep->phys_base + PCIE_MSI_ADDR_OFFSET; + + pcie_ep->msi_virt_addr = ioremap(pcie_ep->msi_phys_addr, + PCIE_MSI_OB_SIZE); + if (!pcie_ep->msi_virt_addr) { + dev_err(dev, "failed to map MSI outbound region\n"); + return -ENOMEM; + } + + ret = dw_pcie_ep_init(ep); + if (ret) { + dev_err(dev, "failed to initialize endpoint\n"); + return ret; + } + + return 0; + +} + static int __init ls_add_pcie_port(struct ls_pcie *pcie) { struct dw_pcie *pci = pcie->pci; @@ -309,16 +416,21 @@ static int __init ls_pcie_probe(struct platform_device *pdev) if (IS_ERR(pci->dbi_base)) return PTR_ERR(pci->dbi_base); - pcie->lut = pci->dbi_base + pcie->drvdata->lut_offset; + pci->dbi_base2 = pci->dbi_base + PCIE_DBI2_BASE; - if (!ls_pcie_is_bridge(pcie)) - return -ENODEV; + pcie->lut = pci->dbi_base + pcie->drvdata->lut_offset; platform_set_drvdata(pdev, pcie); - ret = ls_add_pcie_port(pcie); - if (ret < 0) - return ret; + if (!ls_pcie_is_bridge(pcie)) { + ret = ls_add_pcie_ep(pcie, pdev); + if (ret < 0) + return ret; + } else { + ret = ls_add_pcie_port(pcie); + if (ret < 0) + return ret; + } return 0; } From patchwork Fri Nov 10 02:49:26 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaowei Bao X-Patchwork-Id: 836595 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3yY4jy3ZdHz9sxR for ; 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nxp.com; dkim=none (message not signed) header.d=none;nxp.com; dmarc=fail action=none header.from=nxp.com; Received-SPF: Fail (protection.outlook.com: domain of nxp.com does not designate 192.88.168.50 as permitted sender) receiver=protection.outlook.com; client-ip=192.88.168.50; helo=tx30smr01.am.freescale.net; Received: from tx30smr01.am.freescale.net (192.88.168.50) by BN1AFFO11FD043.mail.protection.outlook.com (10.58.52.190) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.20.178.5 via Frontend Transport; Fri, 10 Nov 2017 03:08:15 +0000 Received: from titan.ap.freescale.net ([10.192.208.233]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id vAA37fFg032559; Thu, 9 Nov 2017 20:08:08 -0700 From: Bao Xiaowei To: , , , , , , , , , , , , , , , , , , , , , , , CC: Bao Xiaowei Subject: [PATCHv3 3/3] ARMv8: pcie: make the DWC EP driver support for layerscape Date: Fri, 10 Nov 2017 10:49:26 +0800 Message-ID: <20171110024926.39700-4-xiaowei.bao@nxp.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20171110024926.39700-1-xiaowei.bao@nxp.com> References: <20171110024926.39700-1-xiaowei.bao@nxp.com> X-EOPAttributedMessage: 0 X-Matching-Connectors: 131547568955599889; 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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN2PR03MB2366 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Layerscape pcie controllers support RC or EP mode, Add the EP mode support in Kconfig, the driver will support both RC and EP mode, and the driver is able to judge the pcie controllers work on RC or EP mode. Signed-off-by: Bao Xiaowei Acked-by: Minghuan Lian --- v2: no change v3: no change drivers/pci/dwc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/dwc/Kconfig b/drivers/pci/dwc/Kconfig index 22ec82fcdea2..b5f507795779 100644 --- a/drivers/pci/dwc/Kconfig +++ b/drivers/pci/dwc/Kconfig @@ -108,6 +108,7 @@ config PCI_LAYERSCAPE depends on PCI_MSI_IRQ_DOMAIN select MFD_SYSCON select PCIE_DW_HOST + select PCIE_DW_EP help Say Y here if you want PCIe controller support on Layerscape SoCs.