From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by dpdk.org (Postfix) with ESMTP id EEBAD49E1 for ; Fri, 17 Aug 2018 12:51:31 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Aug 2018 03:51:31 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,250,1531810800"; d="scan'208";a="63131843" Received: from jeffguo-z170x-ud5.sh.intel.com (HELO localhost.localdomain) ([10.67.104.10]) by fmsmga007.fm.intel.com with ESMTP; 17 Aug 2018 03:51:28 -0700 From: Jeff Guo To: stephen@networkplumber.org, bruce.richardson@intel.com, ferruh.yigit@intel.com, konstantin.ananyev@intel.com, gaetan.rivet@6wind.com, jingjing.wu@intel.com, thomas@monjalon.net, motih@mellanox.com, matan@mellanox.com, harry.van.haaren@intel.com, qi.z.zhang@intel.com, shaopeng.he@intel.com, bernard.iremonger@intel.com, arybchenko@solarflare.com, wenzhuo.lu@intel.com Cc: jblunck@infradead.org, shreyansh.jain@nxp.com, dev@dpdk.org, jia.guo@intel.com, helin.zhang@intel.com Date: Fri, 17 Aug 2018 18:48:31 +0800 Message-Id: <1534502916-31636-5-git-send-email-jia.guo@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1534502916-31636-1-git-send-email-jia.guo@intel.com> References: <1498711073-42917-1-git-send-email-jia.guo@intel.com> <1534502916-31636-1-git-send-email-jia.guo@intel.com> Subject: [dpdk-dev] [PATCH v10 4/8] bus/pci: implement sigbus handler ops X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Aug 2018 10:51:32 -0000 This patch implements the ops for the PCI bus sigbus handler. It finds the PCI device that is being hotplugged out and calls the relevant ops of the memory failure handler to handle the failure of the device. Signed-off-by: Jeff Guo Acked-by: Shaopeng He --- v10->v9: refine doc. --- drivers/bus/pci/pci_common.c | 53 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/drivers/bus/pci/pci_common.c b/drivers/bus/pci/pci_common.c index 759ccc3..b8f3244 100644 --- a/drivers/bus/pci/pci_common.c +++ b/drivers/bus/pci/pci_common.c @@ -405,6 +405,36 @@ pci_find_device(const struct rte_device *start, rte_dev_cmp_t cmp, return NULL; } +/** + * find the device which encounter the failure, by iterate all device on + * PCI bus to check if the memory failure address is located in the range + * of the BARs of any device. + */ +static struct rte_pci_device * +pci_find_device_by_addr(const void *failure_addr) +{ + struct rte_pci_device *pdev = NULL; + int i; + + FOREACH_DEVICE_ON_PCIBUS(pdev) { + for (i = 0; i != RTE_DIM(pdev->mem_resource); i++) { + if ((uint64_t)(uintptr_t)failure_addr >= + (uint64_t)(uintptr_t)pdev->mem_resource[i].addr && + (uint64_t)(uintptr_t)failure_addr < + (uint64_t)(uintptr_t)pdev->mem_resource[i].addr + + pdev->mem_resource[i].len) { + RTE_LOG(INFO, EAL, "Failure address " + "%16.16"PRIx64" belongs to " + "device %s!\n", + (uint64_t)(uintptr_t)failure_addr, + pdev->device.name); + return pdev; + } + } + } + return NULL; +} + static int pci_memory_failure_handler(struct rte_device *dev) { @@ -433,6 +463,28 @@ pci_memory_failure_handler(struct rte_device *dev) } static int +pci_sigbus_handler(const void *failure_addr) +{ + struct rte_pci_device *pdev = NULL; + int ret = 0; + + pdev = pci_find_device_by_addr(failure_addr); + if (!pdev) { + /* It is a generic sigbus error, no bus would handle it. */ + ret = 1; + } else { + /* The sigbus error is caused of hotplug-out. */ + ret = pci_memory_failure_handler(&pdev->device); + if (ret) { + RTE_LOG(ERR, EAL, "Failed to handle failure for " + "device %s", pdev->name); + ret = -1; + } + } + return ret; +} + +static int pci_plug(struct rte_device *dev) { return pci_probe_all_drivers(RTE_DEV_TO_PCI(dev)); @@ -463,6 +515,7 @@ struct rte_pci_bus rte_pci_bus = { .parse = pci_parse, .get_iommu_class = rte_pci_get_iommu_class, .memory_failure_handler = pci_memory_failure_handler, + .sigbus_handler = pci_sigbus_handler, }, .device_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.device_list), .driver_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.driver_list), -- 2.7.4