From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A5E5DC7112F for ; Mon, 21 Jan 2019 11:01:55 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 73D902085A for ; Mon, 21 Jan 2019 11:01:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="V+KI9qpt"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ti.com header.i=@ti.com header.b="DF9YKcBF" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 73D902085A Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=ti.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Cc:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=gfppWvwZPjV20ugRKfM3+4IgDJrgwH8YuIQi7oSW8ec=; b=V+KI9qptDU1grCK+NQejiRfLwK kLFTLJmlbQ7oCVNbDmxS/3DtZMgpN7fWa94h4WaqAKBzboYNlTNvj+x4rOXmZUWVsPOQkl2ZbUGTm IhCRUcW62XcoCWPhzSlCjCnfN7AA/72Nm22nmHblpquISoX/FB6mMTEelqJYH9Ws9nZuorcfkkrdr rtvs3cEUowPytBkA/WrcuiGyzsNY7AiERZrCq0SUkUxPioswduuwgpKsFo9cGWnTJwTijHVwuJIRB T8BeP+lrHIaNDOs+BfyIKiftKS1RSrhmlZEYjrnQcxSvRl6yGY4/kg3hF6Vn7oBZ6TUwnSp9GvByY ejFCugQQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1glXL0-0008P4-9a; Mon, 21 Jan 2019 11:01:54 +0000 Received: from fllv0015.ext.ti.com ([198.47.19.141]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1glXKv-0008OV-Vf for linux-arm-kernel@lists.infradead.org; Mon, 21 Jan 2019 11:01:52 +0000 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id x0LB1XeP021658; Mon, 21 Jan 2019 05:01:33 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1548068493; bh=hhMlffWEnXAfq4XJujl8J/Qv93eZrx3xg3jx0yFJq28=; h=Subject:To:References:From:Date:In-Reply-To; b=DF9YKcBFXA6+kLbmXwxno3SusuryxTxXrzwpZ4mXj9A9Uimtdx9A6vKwl35/3NuoT LgcN6MrbK3MO8NcoNmNSr/qArx1SreI0+YxtKasPA3XA0XFhL+m3eU+fN3aaK3c30Y Qqzwlz4V1jFgtGpWhKG0jYaKN2iIn9/V7xjNFLK4= Received: from DLEE115.ent.ti.com (dlee115.ent.ti.com [157.170.170.26]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x0LB1XcI022472 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 21 Jan 2019 05:01:33 -0600 Received: from DLEE108.ent.ti.com (157.170.170.38) by DLEE115.ent.ti.com (157.170.170.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Mon, 21 Jan 2019 05:01:33 -0600 Received: from dlep33.itg.ti.com (157.170.170.75) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1591.10 via Frontend Transport; Mon, 21 Jan 2019 05:01:33 -0600 Received: from [172.24.190.233] (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id x0LB1Rur003956; Mon, 21 Jan 2019 05:01:28 -0600 Subject: Re: [PATCHv5 3/4] pci: layerscape: Add the EP mode support. To: Xiaowei Bao , , , , , , , , , , , , , , , , , , , , , References: <20190121094500.10657-1-xiaowei.bao@nxp.com> <20190121094500.10657-3-xiaowei.bao@nxp.com> From: Kishon Vijay Abraham I Message-ID: <0791e307-17c5-6f47-ae89-73bb5dc0f232@ti.com> Date: Mon, 21 Jan 2019 16:31:00 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: <20190121094500.10657-3-xiaowei.bao@nxp.com> Content-Language: en-US X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190121_030150_113977_7445035E X-CRM114-Status: GOOD ( 24.56 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Xiaowei, On 21/01/19 3:14 PM, Xiaowei Bao wrote: > Add the PCIe EP mode support for layerscape platform. > > Signed-off-by: Xiaowei Bao > Reviewed-by: Minghuan Lian > Reviewed-by: Zhiqiang Hou This patch looks good to me, except for using epc->features which I've tried to get rid of in [1]. After Lorenzo's review, one of us have to change it to the new design. Thanks Kishon [1] -> https://patchwork.kernel.org/project/linux-pci/list/?series=66177 > --- > v2: > - remove the EP mode check function. > v3: > - modif the return value when enter default case. > v4: > - no change. > v5: > - no change. > > drivers/pci/controller/dwc/Makefile | 2 +- > drivers/pci/controller/dwc/pci-layerscape-ep.c | 146 ++++++++++++++++++++++++ > 2 files changed, 147 insertions(+), 1 deletions(-) > create mode 100644 drivers/pci/controller/dwc/pci-layerscape-ep.c > > diff --git a/drivers/pci/controller/dwc/Makefile b/drivers/pci/controller/dwc/Makefile > index 7bcdcdf..b5f3b83 100644 > --- a/drivers/pci/controller/dwc/Makefile > +++ b/drivers/pci/controller/dwc/Makefile > @@ -8,7 +8,7 @@ obj-$(CONFIG_PCI_EXYNOS) += pci-exynos.o > obj-$(CONFIG_PCI_IMX6) += pci-imx6.o > obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spear13xx.o > obj-$(CONFIG_PCI_KEYSTONE) += pci-keystone.o > -obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o > +obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o pci-layerscape-ep.o > obj-$(CONFIG_PCIE_QCOM) += pcie-qcom.o > obj-$(CONFIG_PCIE_ARMADA_8K) += pcie-armada8k.o > obj-$(CONFIG_PCIE_ARTPEC6) += pcie-artpec6.o > diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c > new file mode 100644 > index 0000000..dafb528 > --- /dev/null > +++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c > @@ -0,0 +1,146 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * PCIe controller EP driver for Freescale Layerscape SoCs > + * > + * Copyright (C) 2018 NXP Semiconductor. > + * > + * Author: Xiaowei Bao > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +#include "pcie-designware.h" > + > +#define PCIE_DBI2_OFFSET 0x1000 /* DBI2 base address*/ > + > +struct ls_pcie_ep { > + struct dw_pcie *pci; > +}; > + > +#define to_ls_pcie_ep(x) dev_get_drvdata((x)->dev) > + > +static int ls_pcie_establish_link(struct dw_pcie *pci) > +{ > + return 0; > +} > + > +static const struct dw_pcie_ops ls_pcie_ep_ops = { > + .start_link = ls_pcie_establish_link, > +}; > + > +static const struct of_device_id ls_pcie_ep_of_match[] = { > + { .compatible = "fsl,ls-pcie-ep",}, > + { }, > +}; > + > +static void ls_pcie_ep_init(struct dw_pcie_ep *ep) > +{ > + struct dw_pcie *pci = to_dw_pcie_from_ep(ep); > + struct pci_epc *epc = ep->epc; > + enum pci_barno bar; > + > + for (bar = BAR_0; bar <= BAR_5; bar++) > + dw_pcie_ep_reset_bar(pci, bar); > + > + epc->features |= EPC_FEATURE_NO_LINKUP_NOTIFIER; > +} > + > +static int ls_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no, > + enum pci_epc_irq_type type, u16 interrupt_num) > +{ > + struct dw_pcie *pci = to_dw_pcie_from_ep(ep); > + > + switch (type) { > + case PCI_EPC_IRQ_LEGACY: > + return dw_pcie_ep_raise_legacy_irq(ep, func_no); > + case PCI_EPC_IRQ_MSI: > + return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num); > + case PCI_EPC_IRQ_MSIX: > + return dw_pcie_ep_raise_msix_irq(ep, func_no, interrupt_num); > + default: > + dev_err(pci->dev, "UNKNOWN IRQ type\n"); > + return -EINVAL; > + } > +} > + > +static struct dw_pcie_ep_ops pcie_ep_ops = { > + .ep_init = ls_pcie_ep_init, > + .raise_irq = ls_pcie_ep_raise_irq, > +}; > + > +static int __init ls_add_pcie_ep(struct ls_pcie_ep *pcie, > + struct platform_device *pdev) > +{ > + struct dw_pcie *pci = pcie->pci; > + struct device *dev = pci->dev; > + struct dw_pcie_ep *ep; > + struct resource *res; > + int ret; > + > + ep = &pci->ep; > + ep->ops = &pcie_ep_ops; > + > + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "addr_space"); > + if (!res) > + return -EINVAL; > + > + ep->phys_base = res->start; > + ep->addr_size = resource_size(res); > + > + ret = dw_pcie_ep_init(ep); > + if (ret) { > + dev_err(dev, "failed to initialize endpoint\n"); > + return ret; > + } > + > + return 0; > +} > + > +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 resource *dbi_base; > + int ret; > + > + pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL); > + if (!pcie) > + return -ENOMEM; > + > + pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL); > + if (!pci) > + 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)) > + return PTR_ERR(pci->dbi_base); > + > + pci->dbi_base2 = pci->dbi_base + PCIE_DBI2_OFFSET; > + pci->dev = dev; > + pci->ops = &ls_pcie_ep_ops; > + pcie->pci = pci; > + > + platform_set_drvdata(pdev, pcie); > + > + ret = ls_add_pcie_ep(pcie, pdev); > + > + return ret; > +} > + > +static struct platform_driver ls_pcie_ep_driver = { > + .driver = { > + .name = "layerscape-pcie-ep", > + .of_match_table = ls_pcie_ep_of_match, > + .suppress_bind_attrs = true, > + }, > +}; > +builtin_platform_driver_probe(ls_pcie_ep_driver, ls_pcie_ep_probe); > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel