From patchwork Wed Oct 16 20:06:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Herring X-Patchwork-Id: 1178127 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46tjy20sB5z9sP3 for ; Thu, 17 Oct 2019 07:07:22 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732815AbfJPUHV (ORCPT ); Wed, 16 Oct 2019 16:07:21 -0400 Received: from mail-oi1-f193.google.com ([209.85.167.193]:39097 "EHLO mail-oi1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732760AbfJPUHV (ORCPT ); Wed, 16 Oct 2019 16:07:21 -0400 Received: by mail-oi1-f193.google.com with SMTP id w144so119570oia.6; Wed, 16 Oct 2019 13:07:20 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=EUvNXVMR7ueFc2YPhgs8zP4YzcDIk6QWtKI1XB6VZ+Y=; b=BQbalzCmikHp/Chrw0anU8Yd7ELKqvX+GzlfoIHlgDV2TqEOick5Q1XNDKerCIYOpt Iaii1xJkEJtBklQ6l7FL8unbXQwxLg1ZaBeiJ9f0v6WusNvrc3+qXjWWgHvqO4lHgP8Q zSWBMP0SXjj17tr7jbCBJeH252scUXUTOlSAom4qZmEpJxi4m2DorHzgqeZE69ijsyzz bp2HJPviqm/cuvbBLRtVazHSfLLJd4Fd6xnrhsc6f/n9H4fcPSkUM2iM9UWRsVeuGZEE ZtspxnBudw1wPZJcShy9mSe6Ky+cKRxz5QNxglNwo3M8SPeHZ/wtl0zRDaPfDL7BNL54 HRkg== X-Gm-Message-State: APjAAAU7mJjkGEjiLEMZQIYb3nPoUo8MlcCyRvK7m210uEEHKq1LQdGf N6y1hI7bWk+I75gbi7so7w== X-Google-Smtp-Source: APXvYqy/2Fy9rR5BzYiQ6RiCmXGzv9E3TVFk2RmyQBRWYVoIxeJcIYcMHXgrMkV0fEcNz2sBt7+DZg== X-Received: by 2002:aca:b9d7:: with SMTP id j206mr112019oif.112.1571256440272; Wed, 16 Oct 2019 13:07:20 -0700 (PDT) Received: from xps15.herring.priv (24-155-109-49.dyn.grandenetworks.net. [24.155.109.49]) by smtp.googlemail.com with ESMTPSA id a9sm7412463oie.7.2019.10.16.13.07.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Oct 2019 13:07:19 -0700 (PDT) From: Rob Herring To: Andrew Murray , Bjorn Helgaas , Lorenzo Pieralisi Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, bcm-kernel-feedback-list@broadcom.com, Gustavo Pimentel , Heiko Stuebner , Hou Zhiqiang , Jingoo Han , Karthikeyan Mitran , Ley Foon Tan , Linus Walleij , linux-mediatek@lists.infradead.org, linux-renesas-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, Matthias Brugger , Michal Simek , Ray Jui , rfi@lists.rocketboards.org, Ryder Lee , Scott Branden , Shawn Lin , Simon Horman , Srinath Mannam , Thomas Petazzoni , Toan Le , Tom Joseph , Will Deacon Subject: [PATCH v2 16/25] PCI: versatile: Use pci_parse_request_of_pci_ranges() Date: Wed, 16 Oct 2019 15:06:38 -0500 Message-Id: <20191016200647.32050-17-robh@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191016200647.32050-1-robh@kernel.org> References: <20191016200647.32050-1-robh@kernel.org> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Convert ARM Versatile host bridge to use the common pci_parse_request_of_pci_ranges(). There's no need to assign the resources to a temporary list first. Just use bridge->windows directly and remove all the temporary list handling. Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Signed-off-by: Rob Herring Acked-by: Linus Walleij --- v2: - Fix 'mem' initial value to 1 - Remove temporary resource list --- drivers/pci/controller/pci-versatile.c | 64 +++++--------------------- 1 file changed, 11 insertions(+), 53 deletions(-) diff --git a/drivers/pci/controller/pci-versatile.c b/drivers/pci/controller/pci-versatile.c index f59ad2728c0b..18697f2ea345 100644 --- a/drivers/pci/controller/pci-versatile.c +++ b/drivers/pci/controller/pci-versatile.c @@ -62,65 +62,16 @@ static struct pci_ops pci_versatile_ops = { .write = pci_generic_config_write, }; -static int versatile_pci_parse_request_of_pci_ranges(struct device *dev, - struct list_head *res) -{ - int err, mem = 1, res_valid = 0; - resource_size_t iobase; - struct resource_entry *win, *tmp; - - err = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, res, &iobase); - if (err) - return err; - - err = devm_request_pci_bus_resources(dev, res); - if (err) - goto out_release_res; - - resource_list_for_each_entry_safe(win, tmp, res) { - struct resource *res = win->res; - - switch (resource_type(res)) { - case IORESOURCE_IO: - err = devm_pci_remap_iospace(dev, res, iobase); - if (err) { - dev_warn(dev, "error %d: failed to map resource %pR\n", - err, res); - resource_list_destroy_entry(win); - } - break; - case IORESOURCE_MEM: - res_valid |= !(res->flags & IORESOURCE_PREFETCH); - - writel(res->start >> 28, PCI_IMAP(mem)); - writel(PHYS_OFFSET >> 28, PCI_SMAP(mem)); - mem++; - - break; - } - } - - if (res_valid) - return 0; - - dev_err(dev, "non-prefetchable memory resource required\n"); - err = -EINVAL; - -out_release_res: - pci_free_resource_list(res); - return err; -} - static int versatile_pci_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct resource *res; - int ret, i, myslot = -1; + struct resource_entry *entry; + int ret, i, myslot = -1, mem = 1; u32 val; void __iomem *local_pci_cfg_base; struct pci_bus *bus, *child; struct pci_host_bridge *bridge; - LIST_HEAD(pci_res); bridge = devm_pci_alloc_host_bridge(dev, 0); if (!bridge) @@ -141,10 +92,18 @@ static int versatile_pci_probe(struct platform_device *pdev) if (IS_ERR(versatile_cfg_base[1])) return PTR_ERR(versatile_cfg_base[1]); - ret = versatile_pci_parse_request_of_pci_ranges(dev, &pci_res); + ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL); if (ret) return ret; + resource_list_for_each_entry(entry, &bridge->windows) { + if (resource_type(entry->res) == IORESOURCE_MEM) { + writel(entry->res->start >> 28, PCI_IMAP(mem)); + writel(PHYS_OFFSET >> 28, PCI_SMAP(mem)); + mem++; + } + } + /* * We need to discover the PCI core first to configure itself * before the main PCI probing is performed @@ -197,7 +156,6 @@ static int versatile_pci_probe(struct platform_device *pdev) pci_add_flags(PCI_ENABLE_PROC_DOMAINS); pci_add_flags(PCI_REASSIGN_ALL_BUS); - list_splice_init(&pci_res, &bridge->windows); bridge->dev.parent = dev; bridge->sysdata = NULL; bridge->busnr = 0;