From patchwork Wed Dec 16 15:16:19 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Nowicki X-Patchwork-Id: 7862231 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 90E37BEEE5 for ; Wed, 16 Dec 2015 15:18:15 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AC4E6202FE for ; Wed, 16 Dec 2015 15:18:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E746220396 for ; Wed, 16 Dec 2015 15:18:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933976AbbLPPR7 (ORCPT ); Wed, 16 Dec 2015 10:17:59 -0500 Received: from mail-wm0-f44.google.com ([74.125.82.44]:34136 "EHLO mail-wm0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965722AbbLPPR4 (ORCPT ); Wed, 16 Dec 2015 10:17:56 -0500 Received: by mail-wm0-f44.google.com with SMTP id l126so44171604wml.1 for ; Wed, 16 Dec 2015 07:17:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=semihalf-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=qNVxAhVkaUEExtzlsOgTGnSUMExmwXMoEDneDJQ/Giw=; b=o+CADKY54qJkwqekkcL5X/orSULl3klbik+QWO8kbobwXHRO6w7h0MDKKsue3AkddF 1md0SeZ7aoEFE+ul+vAxvNcl7RLcys29e0wVNjDRpRPTGB0W2qHSykGZEoUM/iwMLrB2 7SbrQD44NQzWfA92JtV5KjWvY2ysFNaI7H2NhgZDfERt9yt4bWB1IMlFQbiHlXbSkKkg 1UfbdN0+TQ4XEFtKmXUDbsTiltAkRi4trn0BUbH2yAwwPfBRMhgjPVpswUsZL4F/Xkxm LbSNoxUsDX6tu0x2VdgOztEg7lmzO2KqSoTHKLFAzBDCou6gp9okLH8oFN/CBFA/jfCi ddow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=qNVxAhVkaUEExtzlsOgTGnSUMExmwXMoEDneDJQ/Giw=; b=fDwqp22AlyvhhllTwGUjL+nw/whiI3JzqmgYmW+AeCGJSzgTYK00cNeRb7wl9tkOKH o2FZAMyVNazHpjGuXdh7/yWgc/BqhYvkZYv2xxwnNx5Sv5TtKxdkY8Ce1u5e14TawPoy ojMVK81HuR1fDYA5SKBbhKPBKJfkL7JG3T53N0cJmNprXIZRthSMMKtYSljgl2/JJUcg GtP/fU2z2OJRmjK74nA2Nakck6pl5D3Qb66LN0G1usmKW5DO4+NBmvnLJxoaD57ImBGv +K7AG2wv+s4BHaOfi0r1fL+aM2GXU+7ZKM3mlYClSHpa0pAs0SsLSpH8ntJaGc/U1alu v55A== X-Gm-Message-State: ALoCoQmZ+VS2Rv2xnhMxxusO5zyzpq3HNA1JawCHzNmMqD+dDisQ+wdfGmJXPK/ELToXTCCjNvws/Vg2orW2g3oNXeSlfUJ0jw== X-Received: by 10.194.134.102 with SMTP id pj6mr56901477wjb.23.1450279075773; Wed, 16 Dec 2015 07:17:55 -0800 (PST) Received: from tn-HP-4.semihalf.local ([80.82.22.190]) by smtp.gmail.com with ESMTPSA id z17sm6438761wjq.1.2015.12.16.07.17.53 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 16 Dec 2015 07:17:55 -0800 (PST) From: Tomasz Nowicki To: bhelgaas@google.com, arnd@arndb.de, will.deacon@arm.com, catalin.marinas@arm.com, rjw@rjwysocki.net, hanjun.guo@linaro.org, Lorenzo.Pieralisi@arm.com, okaya@codeaurora.org, jiang.liu@linux.intel.com, Stefano.Stabellini@eu.citrix.com Cc: robert.richter@caviumnetworks.com, mw@semihalf.com, Liviu.Dudau@arm.com, ddaney@caviumnetworks.com, tglx@linutronix.de, wangyijing@huawei.com, Suravee.Suthikulpanit@amd.com, msalter@redhat.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linaro-acpi@lists.linaro.org, jchandra@broadcom.com, jcm@redhat.com, Tomasz Nowicki Subject: [PATCH V2 09/23] pci, acpi, ecam: Add flag to indicate whether ECAM region was hot added or not. Date: Wed, 16 Dec 2015 16:16:19 +0100 Message-Id: <1450278993-12664-10-git-send-email-tn@semihalf.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1450278993-12664-1-git-send-email-tn@semihalf.com> References: <1450278993-12664-1-git-send-email-tn@semihalf.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID,T_RP_MATCHES_RCVD,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP There are two ways we can get ECAM (aka MCFG) regions using ACPI, from MCFG static table and from _CBA method. We cannot remove static regions, however regions coming from _CBA should be removed while removing bridge device. In the light of above we need flag to mark hot added ECAM entries so that user should use pci_mmconfig_inject while adding regions from _CBA method. Signed-off-by: Tomasz Nowicki Tested-by: Suravee Suthikulpanit --- drivers/pci/ecam.c | 2 ++ include/linux/ecam.h | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/pci/ecam.c b/drivers/pci/ecam.c index 8a5eef7..da35b4c 100644 --- a/drivers/pci/ecam.c +++ b/drivers/pci/ecam.c @@ -131,6 +131,7 @@ struct pci_mmcfg_region *pci_mmconfig_alloc(int segment, int start, new->segment = segment; new->start_bus = start; new->end_bus = end; + new->hot_added = false; res = &new->res; res->start = addr + PCI_MMCFG_BUS_OFFSET(start); @@ -221,6 +222,7 @@ int pci_mmconfig_inject(struct pci_mmcfg_region *cfg) err = -ENOMEM; goto out; } else { + cfg->hot_added = true; list_add_sorted(cfg); pr_info("MMCONFIG at %pR (base %#lx)\n", &cfg->res, (unsigned long)cfg->address); diff --git a/include/linux/ecam.h b/include/linux/ecam.h index 813acd1..e0f322e 100644 --- a/include/linux/ecam.h +++ b/include/linux/ecam.h @@ -17,6 +17,7 @@ struct pci_mmcfg_region { u8 start_bus; u8 end_bus; char name[PCI_MMCFG_RESOURCE_NAME_LEN]; + bool hot_added; }; struct pci_mmcfg_region *pci_mmconfig_lookup(int segment, int bus);