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[213.17.239.108]) by smtp.gmail.com with ESMTPSA id w8sm12238889wjx.21.2016.02.04.09.29.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 04 Feb 2016 09:29:13 -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 Subject: [PATCH V4 09/23] pci, acpi, ecam: Add flag to indicate whether ECAM region was hot added or not. Date: Thu, 4 Feb 2016 18:28:47 +0100 Message-Id: <1454606941-9523-10-git-send-email-tn@semihalf.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1454606941-9523-1-git-send-email-tn@semihalf.com> References: <1454606941-9523-1-git-send-email-tn@semihalf.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160204_092935_941003_715EAB6B X-CRM114-Status: GOOD ( 10.44 ) X-Spam-Score: -2.6 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jchandra@broadcom.com, jcm@redhat.com, linaro-acpi@lists.linaro.org, linux-pci@vger.kernel.org, Liviu.Dudau@arm.com, ddaney@caviumnetworks.com, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, robert.richter@caviumnetworks.com, Suravee.Suthikulpanit@amd.com, msalter@redhat.com, wangyijing@huawei.com, Tomasz Nowicki , mw@semihalf.com, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,RP_MATCHES_RCVD,T_DKIM_INVALID,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 Tested-by: Jeremy Linton Tested-by: Duc Dang Tested-by: Dongdong Liu Tested-by: Hanjun Guo Tested-by: Graeme Gregory Tested-by: Sinan Kaya --- 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 7bc75af..fea5700 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);