Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752348AbbLVBy1 (ORCPT ); Mon, 21 Dec 2015 20:54:27 -0500 Received: from mail-ig0-f176.google.com ([209.85.213.176]:38233 "EHLO mail-ig0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751376AbbLVBxu (ORCPT ); Mon, 21 Dec 2015 20:53:50 -0500 From: David Daney To: linux-kernel@vger.kernel.org, Will Deacon , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Marc Zyngier , Bjorn Helgaas , linux-pci@vger.kernel.org Cc: Arnd Bergmann , David Daney Subject: [PATCH 1/2] PCI: generic: Refactor code to enable reuse by other drivers. Date: Mon, 21 Dec 2015 17:53:41 -0800 Message-Id: <1450749222-15966-2-git-send-email-ddaney.cavm@gmail.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1450749222-15966-1-git-send-email-ddaney.cavm@gmail.com> References: <1450749222-15966-1-git-send-email-ddaney.cavm@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5356 Lines: 181 From: David Daney No change in functionality. Move structure definitions into a separate header file. Split probe function in to two parts: - a small driver specific probe function (gen_pci_probe) - a common probe that can be used by other drivers (gen_pci_common_probe) Signed-off-by: David Daney --- drivers/pci/host/pci-host-generic.c | 53 ++++++++++++----------------------- drivers/pci/host/pci-host-generic.h | 56 +++++++++++++++++++++++++++++++++++++ 2 files changed, 74 insertions(+), 35 deletions(-) create mode 100644 drivers/pci/host/pci-host-generic.h diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/host/pci-host-generic.c index 5434c90..e83cec7 100644 --- a/drivers/pci/host/pci-host-generic.c +++ b/drivers/pci/host/pci-host-generic.c @@ -25,33 +25,7 @@ #include #include -struct gen_pci_cfg_bus_ops { - u32 bus_shift; - struct pci_ops ops; -}; - -struct gen_pci_cfg_windows { - struct resource res; - struct resource *bus_range; - void __iomem **win; - - struct gen_pci_cfg_bus_ops *ops; -}; - -/* - * ARM pcibios functions expect the ARM struct pci_sys_data as the PCI - * sysdata. Add pci_sys_data as the first element in struct gen_pci so - * that when we use a gen_pci pointer as sysdata, it is also a pointer to - * a struct pci_sys_data. - */ -struct gen_pci { -#ifdef CONFIG_ARM - struct pci_sys_data sys; -#endif - struct pci_host_bridge host; - struct gen_pci_cfg_windows cfg; - struct list_head resources; -}; +#include "pci-host-generic.h" static void __iomem *gen_pci_map_cfg_bus_cam(struct pci_bus *bus, unsigned int devfn, @@ -208,19 +182,15 @@ static int gen_pci_parse_map_cfg_windows(struct gen_pci *pci) return 0; } -static int gen_pci_probe(struct platform_device *pdev) +int gen_pci_common_probe(struct platform_device *pdev, + struct gen_pci *pci) { int err; const char *type; - const struct of_device_id *of_id; struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; - struct gen_pci *pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL); struct pci_bus *bus, *child; - if (!pci) - return -ENOMEM; - type = of_get_property(np, "device_type", NULL); if (!type || strcmp(type, "pci")) { dev_err(dev, "invalid \"device_type\" %s\n", type); @@ -229,8 +199,6 @@ static int gen_pci_probe(struct platform_device *pdev) of_pci_check_probe_only(); - of_id = of_match_node(gen_pci_of_match, np); - pci->cfg.ops = (struct gen_pci_cfg_bus_ops *)of_id->data; pci->host.dev.parent = dev; INIT_LIST_HEAD(&pci->host.windows); INIT_LIST_HEAD(&pci->resources); @@ -273,6 +241,21 @@ static int gen_pci_probe(struct platform_device *pdev) return 0; } +static int gen_pci_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + const struct of_device_id *of_id; + struct gen_pci *pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL); + + if (!pci) + return -ENOMEM; + + of_id = of_match_node(gen_pci_of_match, dev->of_node); + pci->cfg.ops = (struct gen_pci_cfg_bus_ops *)of_id->data; + + return gen_pci_common_probe(pdev, pci); +} + static struct platform_driver gen_pci_driver = { .driver = { .name = "pci-host-generic", diff --git a/drivers/pci/host/pci-host-generic.h b/drivers/pci/host/pci-host-generic.h new file mode 100644 index 0000000..089fecb --- /dev/null +++ b/drivers/pci/host/pci-host-generic.h @@ -0,0 +1,56 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * Copyright (C) 2014 ARM Limited + * + * Author: Will Deacon + */ + +#ifndef _PCI_HOST_GENERIC_H +#define _PCI_HOST_GENERIC_H + +#include +#include + +struct gen_pci_cfg_bus_ops { + u32 bus_shift; + struct pci_ops ops; +}; + +struct gen_pci_cfg_windows { + struct resource res; + struct resource *bus_range; + void __iomem **win; + + struct gen_pci_cfg_bus_ops *ops; +}; + +/* + * ARM pcibios functions expect the ARM struct pci_sys_data as the PCI + * sysdata. Add pci_sys_data as the first element in struct gen_pci so + * that when we use a gen_pci pointer as sysdata, it is also a pointer to + * a struct pci_sys_data. + */ +struct gen_pci { +#ifdef CONFIG_ARM + struct pci_sys_data sys; +#endif + struct pci_host_bridge host; + struct gen_pci_cfg_windows cfg; + struct list_head resources; +}; + +int gen_pci_common_probe(struct platform_device *pdev, + struct gen_pci *pci); + +#endif /* _PCI_HOST_GENERIC_H */ -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/