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GET /api/patches/41940/?format=api
http://patches.dpdk.org/api/patches/41940/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/1530267871-7161-3-git-send-email-jia.guo@intel.com/", "project": { "id": 1, "url": "http://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<1530267871-7161-3-git-send-email-jia.guo@intel.com>", "list_archive_url": "https://inbox.dpdk.org/dev/1530267871-7161-3-git-send-email-jia.guo@intel.com", "date": "2018-06-29T10:24:24", "name": "[V4,2/9] bus/pci: implement hotplug handler operation", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "0f75df14d0d92e8986fc2bf0ebb01f28f15d3bd7", "submitter": { "id": 507, "url": "http://patches.dpdk.org/api/people/507/?format=api", "name": "Guo, Jia", "email": "jia.guo@intel.com" }, "delegate": null, "mbox": "http://patches.dpdk.org/project/dpdk/patch/1530267871-7161-3-git-send-email-jia.guo@intel.com/mbox/", "series": [ { "id": 314, "url": "http://patches.dpdk.org/api/series/314/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=314", "date": "2018-06-29T10:24:22", "name": "hot plug failure handle mechanism", "version": 4, "mbox": "http://patches.dpdk.org/series/314/mbox/" } ], "comments": "http://patches.dpdk.org/api/patches/41940/comments/", "check": "success", "checks": "http://patches.dpdk.org/api/patches/41940/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@dpdk.org", "Delivered-To": "patchwork@dpdk.org", "Received": [ "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 967DE1B505;\n\tFri, 29 Jun 2018 12:27:01 +0200 (CEST)", "from mga03.intel.com (mga03.intel.com [134.134.136.65])\n\tby dpdk.org (Postfix) with ESMTP id 40DB22D13\n\tfor <dev@dpdk.org>; Fri, 29 Jun 2018 12:26:58 +0200 (CEST)", "from fmsmga005.fm.intel.com ([10.253.24.32])\n\tby orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t29 Jun 2018 03:26:57 -0700", "from jeffguo-z170x-ud5.sh.intel.com (HELO localhost.localdomain)\n\t([10.67.104.10])\n\tby fmsmga005.fm.intel.com with ESMTP; 29 Jun 2018 03:26:55 -0700" ], "X-Amp-Result": "SKIPPED(no attachment in message)", "X-Amp-File-Uploaded": "False", "X-ExtLoop1": "1", "X-IronPort-AV": "E=Sophos;i=\"5.51,285,1526367600\"; d=\"scan'208\";a=\"241324419\"", "From": "Jeff Guo <jia.guo@intel.com>", "To": "stephen@networkplumber.org, bruce.richardson@intel.com,\n\tferruh.yigit@intel.com, konstantin.ananyev@intel.com,\n\tgaetan.rivet@6wind.com, jingjing.wu@intel.com, thomas@monjalon.net,\n\tmotih@mellanox.com, matan@mellanox.com, harry.van.haaren@intel.com,\n\tqi.z.zhang@intel.com, shaopeng.he@intel.com, bernard.iremonger@intel.com", "Cc": "jblunck@infradead.org, shreyansh.jain@nxp.com, dev@dpdk.org,\n\tjia.guo@intel.com, helin.zhang@intel.com", "Date": "Fri, 29 Jun 2018 18:24:24 +0800", "Message-Id": "<1530267871-7161-3-git-send-email-jia.guo@intel.com>", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1530267871-7161-1-git-send-email-jia.guo@intel.com>", "References": "<1530267871-7161-1-git-send-email-jia.guo@intel.com>", "Subject": "[dpdk-dev] [PATCH V4 2/9] bus/pci: implement hotplug handler\n\toperation", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "This patch implements the ops of hotplug handler for PCI bus, it is\nfunctional to remap a new dummy memory which overlap to the failure\nmemory to avoid MMIO read/write error.\n\nSigned-off-by: Jeff Guo <jia.guo@intel.com>\n---\nv4->v3:\nsplit patches to be small and clear.\n---\n drivers/bus/pci/pci_common.c | 28 ++++++++++++++++++++++++++++\n drivers/bus/pci/pci_common_uio.c | 33 +++++++++++++++++++++++++++++++++\n drivers/bus/pci/private.h | 12 ++++++++++++\n 3 files changed, 73 insertions(+)", "diff": "diff --git a/drivers/bus/pci/pci_common.c b/drivers/bus/pci/pci_common.c\nindex d8151b0..095cd4e 100644\n--- a/drivers/bus/pci/pci_common.c\n+++ b/drivers/bus/pci/pci_common.c\n@@ -401,6 +401,33 @@ pci_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,\n }\n \n static int\n+pci_hotplug_handler(struct rte_device *dev)\n+{\n+\tstruct rte_pci_device *pdev = NULL;\n+\tint ret = 0;\n+\n+\tpdev = RTE_DEV_TO_PCI(dev);\n+\tif (!pdev)\n+\t\treturn -1;\n+\n+\tswitch (pdev->kdrv) {\n+\tcase RTE_KDRV_IGB_UIO:\n+\tcase RTE_KDRV_UIO_GENERIC:\n+\tcase RTE_KDRV_NIC_UIO:\n+\t\t/* mmio resources is invalid, remap it to be safe. */\n+\t\tret = pci_uio_remap_resource(pdev);\n+\t\tbreak;\n+\tdefault:\n+\t\tRTE_LOG(DEBUG, EAL,\n+\t\t\t\"Not managed by a supported kernel driver, skipped\\n\");\n+\t\tret = -1;\n+\t\tbreak;\n+\t}\n+\n+\treturn ret;\n+}\n+\n+static int\n pci_plug(struct rte_device *dev)\n {\n \treturn pci_probe_all_drivers(RTE_DEV_TO_PCI(dev));\n@@ -430,6 +457,7 @@ struct rte_pci_bus rte_pci_bus = {\n \t\t.unplug = pci_unplug,\n \t\t.parse = pci_parse,\n \t\t.get_iommu_class = rte_pci_get_iommu_class,\n+\t\t.hotplug_handler = pci_hotplug_handler,\n \t},\n \t.device_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.device_list),\n \t.driver_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.driver_list),\ndiff --git a/drivers/bus/pci/pci_common_uio.c b/drivers/bus/pci/pci_common_uio.c\nindex 54bc20b..7ea73db 100644\n--- a/drivers/bus/pci/pci_common_uio.c\n+++ b/drivers/bus/pci/pci_common_uio.c\n@@ -146,6 +146,39 @@ pci_uio_unmap(struct mapped_pci_resource *uio_res)\n \t}\n }\n \n+/* remap the PCI resource of a PCI device in anonymous virtual memory */\n+int\n+pci_uio_remap_resource(struct rte_pci_device *dev)\n+{\n+\tint i;\n+\tvoid *map_address;\n+\n+\tif (dev == NULL)\n+\t\treturn -1;\n+\n+\t/* Remap all BARs */\n+\tfor (i = 0; i != PCI_MAX_RESOURCE; i++) {\n+\t\t/* skip empty BAR */\n+\t\tif (dev->mem_resource[i].phys_addr == 0)\n+\t\t\tcontinue;\n+\t\tmap_address = mmap(dev->mem_resource[i].addr,\n+\t\t\t\t(size_t)dev->mem_resource[i].len,\n+\t\t\t\tPROT_READ | PROT_WRITE,\n+\t\t\t\tMAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);\n+\t\tif (map_address == MAP_FAILED) {\n+\t\t\tRTE_LOG(ERR, EAL,\n+\t\t\t\t\"Cannot remap resource for device %s\\n\",\n+\t\t\t\tdev->name);\n+\t\t\treturn -1;\n+\t\t}\n+\t\tRTE_LOG(INFO, EAL,\n+\t\t\t\"Successful remap resource for device %s\\n\",\n+\t\t\tdev->name);\n+\t}\n+\n+\treturn 0;\n+}\n+\n static struct mapped_pci_resource *\n pci_uio_find_resource(struct rte_pci_device *dev)\n {\ndiff --git a/drivers/bus/pci/private.h b/drivers/bus/pci/private.h\nindex 8ddd03e..6b312e5 100644\n--- a/drivers/bus/pci/private.h\n+++ b/drivers/bus/pci/private.h\n@@ -123,6 +123,18 @@ void pci_uio_free_resource(struct rte_pci_device *dev,\n \t\tstruct mapped_pci_resource *uio_res);\n \n /**\n+ * Remap the PCI resource of a PCI device in anonymous virtual memory.\n+ *\n+ * @param dev\n+ * Point to the struct rte pci device.\n+ * @return\n+ * - On success, zero.\n+ * - On failure, a negative value.\n+ */\n+int\n+pci_uio_remap_resource(struct rte_pci_device *dev);\n+\n+/**\n * Map device memory to uio resource\n *\n * This function is private to EAL.\n", "prefixes": [ "V4", "2/9" ] }{ "id": 41940, "url": "