From patchwork Thu Dec 20 01:59:17 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rafael Wysocki X-Patchwork-Id: 1898211 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id B6571DF230 for ; Thu, 20 Dec 2012 01:59:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752631Ab2LTB4d (ORCPT ); Wed, 19 Dec 2012 20:56:33 -0500 Received: from hydra.sisk.pl ([212.160.235.94]:38301 "EHLO hydra.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751397Ab2LTBzp (ORCPT ); Wed, 19 Dec 2012 20:55:45 -0500 Received: from vostro.rjw.lan (afck23.neoplus.adsl.tpnet.pl [95.49.62.23]) by hydra.sisk.pl (Postfix) with ESMTPSA id EAD1AE5303; Thu, 20 Dec 2012 02:57:01 +0100 (CET) From: "Rafael J. Wysocki" To: ACPI Devel Maling List Cc: Toshi Kani , Bjorn Helgaas , LKML , linux-pci@vger.kernel.org, Yinghai Lu , Myron Stowe , Yijing Wang , Jiang Liu Subject: [PATCH 15/16] ACPI / PCI: Move the _PRT setup and cleanup code to pci-acpi.c Date: Thu, 20 Dec 2012 02:59:17 +0100 Message-ID: <1444724.1lVhhTmGMg@vostro.rjw.lan> User-Agent: KMail/4.9.3 (Linux/3.7.0; KDE/4.9.3; x86_64; ; ) In-Reply-To: <1855256.SyhOJGYMIh@vostro.rjw.lan> References: <8498184.VilrUmatxI@vostro.rjw.lan> <4082842.31rfDviYHK@vostro.rjw.lan> <1855256.SyhOJGYMIh@vostro.rjw.lan> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Rafael J. Wysocki Move the code related to _PRT setup and removal from acpi_pci_bind() and acpi_pci_unbind() to the .setup() and .cleanup() callbacks in acpi_pci_bus and remove acpi_pci_bind() and acpi_pci_unbind() that have no purpose any more. Accordingly, remove the code related to device .bind() and .unbind() operations from the ACPI PCI root bridge driver. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/Makefile | 2 drivers/acpi/pci_bind.c | 113 ------------------------------------------------ drivers/acpi/pci_root.c | 31 ------------- drivers/pci/pci-acpi.c | 34 +++++++++++--- 4 files changed, 29 insertions(+), 151 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Index: linux/drivers/acpi/pci_bind.c =================================================================== --- linux.orig/drivers/acpi/pci_bind.c +++ /dev/null @@ -1,113 +0,0 @@ -/* - * pci_bind.c - ACPI PCI Device Binding ($Revision: 2 $) - * - * Copyright (C) 2001, 2002 Andy Grover - * Copyright (C) 2001, 2002 Paul Diefenbaugh - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * 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, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#define _COMPONENT ACPI_PCI_COMPONENT -ACPI_MODULE_NAME("pci_bind"); - -static int acpi_pci_unbind(struct acpi_device *device) -{ - struct pci_dev *dev; - - dev = acpi_get_pci_dev(device->handle); - if (!dev) - goto out; - - if (!dev->subordinate) - goto out; - - acpi_pci_irq_del_prt(dev->subordinate); - - device->ops.bind = NULL; - device->ops.unbind = NULL; - -out: - pci_dev_put(dev); - return 0; -} - -static int acpi_pci_bind(struct acpi_device *device) -{ - acpi_status status; - acpi_handle handle; - struct pci_bus *bus; - struct pci_dev *dev; - - dev = acpi_get_pci_dev(device->handle); - if (!dev) - return 0; - - /* - * Install the 'bind' function to facilitate callbacks for - * children of the P2P bridge. - */ - if (dev->subordinate) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Device %04x:%02x:%02x.%d is a PCI bridge\n", - pci_domain_nr(dev->bus), dev->bus->number, - PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn))); - device->ops.bind = acpi_pci_bind; - device->ops.unbind = acpi_pci_unbind; - } - - /* - * Evaluate and parse _PRT, if exists. This code allows parsing of - * _PRT objects within the scope of non-bridge devices. Note that - * _PRTs within the scope of a PCI bridge assume the bridge's - * subordinate bus number. - * - * TBD: Can _PRTs exist within the scope of non-bridge PCI devices? - */ - status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle); - if (ACPI_FAILURE(status)) - goto out; - - if (dev->subordinate) - bus = dev->subordinate; - else - bus = dev->bus; - - acpi_pci_irq_add_prt(device->handle, bus); - -out: - pci_dev_put(dev); - return 0; -} - -int acpi_pci_bind_root(struct acpi_device *device) -{ - device->ops.bind = acpi_pci_bind; - device->ops.unbind = acpi_pci_unbind; - - return 0; -} Index: linux/drivers/pci/pci-acpi.c =================================================================== --- linux.orig/drivers/pci/pci-acpi.c +++ linux/drivers/pci/pci-acpi.c @@ -320,12 +320,30 @@ static int acpi_pci_find_root_bridge(str return 0; } -static void acpi_pci_wakeup_setup(struct device *dev) +static void pci_acpi_setup(struct device *dev) { - struct acpi_device *adev = acpi_dev_pm_get_node(dev); struct pci_dev *pci_dev = to_pci_dev(dev); + acpi_handle handle = ACPI_HANDLE(dev); + struct acpi_device *adev; + acpi_status status; + acpi_handle dummy; + + /* + * Evaluate and parse _PRT, if exists. This code allows parsing of + * _PRT objects within the scope of non-bridge devices. Note that + * _PRTs within the scope of a PCI bridge assume the bridge's + * subordinate bus number. + * + * TBD: Can _PRTs exist within the scope of non-bridge PCI devices? + */ + status = acpi_get_handle(handle, METHOD_NAME__PRT, &dummy); + if (ACPI_SUCCESS(status)) { + struct pci_bus *bus = pci_dev->subordinate; + + acpi_pci_irq_add_prt(handle, bus ? bus : pci_dev->bus); + } - if (!adev || !adev->wakeup.flags.valid) + if (acpi_bus_get_device(handle, &adev) || !adev->wakeup.flags.valid) return; device_set_wakeup_capable(dev, true); @@ -336,23 +354,27 @@ static void acpi_pci_wakeup_setup(struct device_set_run_wake(dev, true); } -static void acpi_pci_wakeup_cleanup(struct device *dev) +static void pci_acpi_cleanup(struct device *dev) { struct acpi_device *adev = acpi_dev_pm_get_node(dev); + struct pci_dev *pci_dev = to_pci_dev(dev); if (adev && adev->wakeup.flags.valid) { device_set_wakeup_capable(dev, false); device_set_run_wake(dev, false); pci_acpi_remove_pm_notifier(adev); } + + if (pci_dev->subordinate) + acpi_pci_irq_del_prt(pci_dev->subordinate); } static struct acpi_bus_type acpi_pci_bus = { .bus = &pci_bus_type, .find_device = acpi_pci_find_device, .find_bridge = acpi_pci_find_root_bridge, - .setup = acpi_pci_wakeup_setup, - .cleanup = acpi_pci_wakeup_cleanup, + .setup = pci_acpi_setup, + .cleanup = pci_acpi_cleanup, }; static int __init acpi_pci_init(void) Index: linux/drivers/acpi/Makefile =================================================================== --- linux.orig/drivers/acpi/Makefile +++ linux/drivers/acpi/Makefile @@ -37,7 +37,7 @@ acpi-y += resource.o acpi-y += processor_core.o acpi-y += ec.o acpi-$(CONFIG_ACPI_DOCK) += dock.o -acpi-y += pci_root.o pci_link.o pci_irq.o pci_bind.o +acpi-y += pci_root.o pci_link.o pci_irq.o acpi-y += acpi_platform.o acpi-y += power.o acpi-y += event.o Index: linux/drivers/acpi/pci_root.c =================================================================== --- linux.orig/drivers/acpi/pci_root.c +++ linux/drivers/acpi/pci_root.c @@ -186,21 +186,6 @@ static acpi_status try_get_root_bridge_b return AE_OK; } -static void acpi_pci_bridge_scan(struct acpi_device *device) -{ - int status; - struct acpi_device *child = NULL; - - if (device->flags.bus_address) - if (device->parent && device->parent->ops.bind) { - status = device->parent->ops.bind(device); - if (!status) { - list_for_each_entry(child, &device->children, node) - acpi_pci_bridge_scan(child); - } - } -} - static u8 pci_osc_uuid_str[] = "33DB4D5B-1FF7-401C-9657-7441C03DD766"; static acpi_status acpi_pci_run_osc(acpi_handle handle, @@ -450,7 +435,6 @@ static int __devinit acpi_pci_root_add(s int result; struct acpi_pci_root *root; acpi_handle handle; - struct acpi_device *child; struct acpi_pci_driver *driver; u32 flags, base_flags; @@ -538,15 +522,6 @@ static int __devinit acpi_pci_root_add(s } /* - * Attach ACPI-PCI Context - * ----------------------- - * Thus binding the ACPI and PCI devices. - */ - result = acpi_pci_bind_root(device); - if (result) - goto out_del_root; - - /* * PCI Routing Table * ----------------- * Evaluate and parse _PRT, if exists. @@ -555,12 +530,6 @@ static int __devinit acpi_pci_root_add(s if (ACPI_SUCCESS(status)) result = acpi_pci_irq_add_prt(device->handle, root->bus); - /* - * Scan and bind all _ADR-Based Devices - */ - list_for_each_entry(child, &device->children, node) - acpi_pci_bridge_scan(child); - /* Indicate support for various _OSC capabilities. */ if (pci_ext_cfg_avail(root->bus->self)) flags |= OSC_EXT_PCI_CONFIG_SUPPORT;