From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754567AbbJ0QoO (ORCPT ); Tue, 27 Oct 2015 12:44:14 -0400 Received: from mail-lf0-f54.google.com ([209.85.215.54]:33007 "EHLO mail-lf0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965161AbbJ0Qja (ORCPT ); Tue, 27 Oct 2015 12:39:30 -0400 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 Cc: jiang.liu@linux.intel.com, robert.richter@caviumnetworks.com, Narinder.Dhillon@caviumnetworks.com, ddaney@caviumnetworks.com, Liviu.Dudau@arm.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, Tomasz Nowicki Subject: [PATCH V1 08/11] pci, acpi, ecam: Add flag to indicate whether ECAM region was hot added or not. Date: Tue, 27 Oct 2015 17:38:39 +0100 Message-Id: <1445963922-22711-9-git-send-email-tn@semihalf.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1445963922-22711-1-git-send-email-tn@semihalf.com> References: <1445963922-22711-1-git-send-email-tn@semihalf.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- 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); -- 1.9.1