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GET /api/patches/125853/?format=api
{ "id": 125853, "url": "http://patchwork.dpdk.org/api/patches/125853/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/patch/20230407060152.16335-5-nipun.gupta@amd.com/", "project": { "id": 1, "url": "http://patchwork.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": "<20230407060152.16335-5-nipun.gupta@amd.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20230407060152.16335-5-nipun.gupta@amd.com", "date": "2023-04-07T06:01:50", "name": "[4/6] bus/cdx: support plug unplug and dev iterator", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "83983f2c05c745479fd3a523ec10ea4a904544d9", "submitter": { "id": 2928, "url": "http://patchwork.dpdk.org/api/people/2928/?format=api", "name": "Gupta, Nipun", "email": "nipun.gupta@amd.com" }, "delegate": { "id": 1, "url": "http://patchwork.dpdk.org/api/users/1/?format=api", "username": "tmonjalo", "first_name": "Thomas", "last_name": "Monjalon", "email": "thomas@monjalon.net" }, "mbox": "http://patchwork.dpdk.org/project/dpdk/patch/20230407060152.16335-5-nipun.gupta@amd.com/mbox/", "series": [ { "id": 27640, "url": "http://patchwork.dpdk.org/api/series/27640/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=27640", "date": "2023-04-07T06:01:46", "name": "add support for CDX bus", "version": 1, "mbox": "http://patchwork.dpdk.org/series/27640/mbox/" } ], "comments": "http://patchwork.dpdk.org/api/patches/125853/comments/", "check": "success", "checks": "http://patchwork.dpdk.org/api/patches/125853/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id DBCA7428E2;\n\tFri, 7 Apr 2023 08:03:21 +0200 (CEST)", "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 76A9542BC9;\n\tFri, 7 Apr 2023 08:03:18 +0200 (CEST)", "from NAM02-DM3-obe.outbound.protection.outlook.com\n (mail-dm3nam02on2069.outbound.protection.outlook.com [40.107.95.69])\n by mails.dpdk.org (Postfix) with ESMTP id 8E65D42BC9\n for <dev@dpdk.org>; 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helo=SATLEXMB04.amd.com; pr=C", "From": "Nipun Gupta <nipun.gupta@amd.com>", "To": "<dev@dpdk.org>, <thomas@monjalon.net>, <david.marchand@redhat.com>", "CC": "<ferruh.yigit@amd.com>, <harpreet.anand@amd.com>,\n <nikhil.agarwal@amd.com>, Nipun Gupta <nipun.gupta@amd.com>", "Subject": "[PATCH 4/6] bus/cdx: support plug unplug and dev iterator", "Date": "Fri, 7 Apr 2023 11:31:50 +0530", "Message-ID": "<20230407060152.16335-5-nipun.gupta@amd.com>", "X-Mailer": "git-send-email 2.17.1", "In-Reply-To": "<20230407060152.16335-1-nipun.gupta@amd.com>", "References": "<20230124140746.594066-1-nipun.gupta@amd.com>\n <20230407060152.16335-1-nipun.gupta@amd.com>", "MIME-Version": "1.0", "Content-Type": "text/plain", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-TrafficTypeDiagnostic": "DM6NAM11FT096:EE_|DM4PR12MB7574:EE_", "X-MS-Office365-Filtering-Correlation-Id": "5178236f-06fe-4006-5112-08db372dc6ff", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam": "BCL:0;", "X-Microsoft-Antispam-Message-Info": "\n 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", "X-Forefront-Antispam-Report": "CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:;\n IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE;\n SFS:(13230028)(4636009)(39860400002)(136003)(396003)(376002)(346002)(451199021)(40470700004)(36840700001)(46966006)(186003)(82310400005)(2616005)(47076005)(36860700001)(81166007)(356005)(36756003)(40460700003)(70586007)(44832011)(5660300002)(8676002)(82740400003)(8936002)(40480700001)(86362001)(4326008)(41300700001)(70206006)(83380400001)(336012)(110136005)(2906002)(426003)(54906003)(26005)(316002)(6666004)(478600001)(1076003)(36900700001);\n DIR:OUT; SFP:1101;", "X-OriginatorOrg": "amd.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "07 Apr 2023 06:03:15.3953 (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 5178236f-06fe-4006-5112-08db372dc6ff", "X-MS-Exchange-CrossTenant-Id": "3dd8961f-e488-4e60-8e11-a82d994e183d", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17];\n Helo=[SATLEXMB04.amd.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n DM6NAM11FT096.eop-nam11.prod.protection.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "DM4PR12MB7574", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <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 <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org" }, "content": "This change adds support for plugging and unplugging\nCDX devices on the CDX bus. Also, CDX dev iterator support\nhas been added for the CDX bus.\n\nSigned-off-by: Nipun Gupta <nipun.gupta@amd.com>\n---\n drivers/bus/cdx/cdx.c | 142 +++++++++++++++++++++++++++++++---\n drivers/bus/cdx/rte_bus_cdx.h | 1 +\n 2 files changed, 133 insertions(+), 10 deletions(-)", "diff": "diff --git a/drivers/bus/cdx/cdx.c b/drivers/bus/cdx/cdx.c\nindex 9732a32eb1..8c72de9fe4 100644\n--- a/drivers/bus/cdx/cdx.c\n+++ b/drivers/bus/cdx/cdx.c\n@@ -69,6 +69,7 @@\n #include <rte_eal_paging.h>\n #include <rte_errno.h>\n #include <rte_devargs.h>\n+#include <rte_kvargs.h>\n #include <rte_malloc.h>\n #include <rte_memcpy.h>\n #include <rte_vfio.h>\n@@ -82,6 +83,15 @@\n #define CDX_BUS_NAME\tcdx\n #define CDX_DEV_PREFIX\t\"cdx-\"\n \n+enum cdx_params {\n+\tRTE_CDX_PARAM_NAME,\n+};\n+\n+static const char * const cdx_params_keys[] = {\n+\t[RTE_CDX_PARAM_NAME] = \"name\",\n+\tNULL,\n+};\n+\n /**\n * @file\n * CDX probing using Linux sysfs.\n@@ -89,7 +99,7 @@\n \n /* Add a device to CDX bus */\n static void\n-rte_cdx_add_device(struct rte_cdx_device *cdx_dev)\n+cdx_add_device(struct rte_cdx_device *cdx_dev)\n {\n \tTAILQ_INSERT_TAIL(&rte_cdx_bus.device_list, cdx_dev, next);\n }\n@@ -259,7 +269,7 @@ cdx_scan_one(const char *dirname, const char *dev_name)\n \t}\n \tdev->id.device_id = (uint16_t)tmp;\n \n-\trte_cdx_add_device(dev);\n+\tcdx_add_device(dev);\n \n \treturn 0;\n \n@@ -276,7 +286,7 @@ cdx_scan_one(const char *dirname, const char *dev_name)\n * list.\n */\n static int\n-rte_cdx_scan(void)\n+cdx_scan(void)\n {\n \tstruct dirent *e;\n \tDIR *dir;\n@@ -356,7 +366,7 @@ cdx_unmap_resource(void *requested_addr, size_t size)\n * Match the CDX Driver and Device using device id and vendor id.\n */\n static int\n-rte_cdx_match(const struct rte_cdx_driver *cdx_drv,\n+cdx_match(const struct rte_cdx_driver *cdx_drv,\n \t\tconst struct rte_cdx_device *cdx_dev)\n {\n \tconst struct rte_cdx_id *id_table;\n@@ -382,7 +392,7 @@ rte_cdx_match(const struct rte_cdx_driver *cdx_drv,\n * driver.\n */\n static int\n-rte_cdx_probe_one_driver(struct rte_cdx_driver *dr,\n+cdx_probe_one_driver(struct rte_cdx_driver *dr,\n \t\tstruct rte_cdx_device *dev)\n {\n \tconst char *dev_name = dev->device.name;\n@@ -393,7 +403,7 @@ rte_cdx_probe_one_driver(struct rte_cdx_driver *dr,\n \t\treturn -EINVAL;\n \n \t/* The device is not blocked; Check if driver supports it */\n-\tif (!rte_cdx_match(dr, dev))\n+\tif (!cdx_match(dr, dev))\n \t\t/* Match of device and driver failed */\n \t\treturn 1;\n \n@@ -421,6 +431,7 @@ rte_cdx_probe_one_driver(struct rte_cdx_driver *dr,\n \t} else {\n \t\tdev->device.driver = &dr->driver;\n \t}\n+\tdev->driver = dr;\n \n \treturn ret;\n \n@@ -447,7 +458,7 @@ cdx_probe_all_drivers(struct rte_cdx_device *dev)\n \t\treturn -EINVAL;\n \n \tFOREACH_DRIVER_ON_CDXBUS(dr) {\n-\t\trc = rte_cdx_probe_one_driver(dr, dev);\n+\t\trc = cdx_probe_one_driver(dr, dev);\n \t\tif (rc < 0)\n \t\t\t/* negative value is an error */\n \t\t\treturn rc;\n@@ -566,6 +577,71 @@ cdx_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,\n \treturn NULL;\n }\n \n+/* Remove a device from CDX bus */\n+static void\n+cdx_remove_device(struct rte_cdx_device *cdx_dev)\n+{\n+\tTAILQ_REMOVE(&rte_cdx_bus.device_list, cdx_dev, next);\n+}\n+\n+/*\n+ * If vendor/device ID match, call the remove() function of the\n+ * driver.\n+ */\n+static int\n+cdx_detach_dev(struct rte_cdx_device *dev)\n+{\n+\tstruct rte_cdx_driver *dr;\n+\tint ret = 0;\n+\n+\tif (dev == NULL)\n+\t\treturn -EINVAL;\n+\n+\tdr = dev->driver;\n+\n+\tCDX_BUS_DEBUG(\"detach device %s using driver: %s\",\n+\t\tdev->device.name, dr->driver.name);\n+\n+\tif (dr->remove) {\n+\t\tret = dr->remove(dev);\n+\t\tif (ret < 0)\n+\t\t\treturn ret;\n+\t}\n+\n+\t/* clear driver structure */\n+\tdev->driver = NULL;\n+\tdev->device.driver = NULL;\n+\n+\trte_cdx_unmap_device(dev);\n+\n+\trte_intr_instance_free(dev->intr_handle);\n+\tdev->intr_handle = NULL;\n+\n+\treturn 0;\n+}\n+\n+static int\n+cdx_plug(struct rte_device *dev)\n+{\n+\treturn cdx_probe_all_drivers(RTE_DEV_TO_CDX_DEV(dev));\n+}\n+\n+static int\n+cdx_unplug(struct rte_device *dev)\n+{\n+\tstruct rte_cdx_device *cdx_dev;\n+\tint ret;\n+\n+\tcdx_dev = RTE_DEV_TO_CDX_DEV(dev);\n+\tret = cdx_detach_dev(cdx_dev);\n+\tif (ret == 0) {\n+\t\tcdx_remove_device(cdx_dev);\n+\t\trte_devargs_remove(dev->devargs);\n+\t\tfree(cdx_dev);\n+\t}\n+\treturn ret;\n+}\n+\n static int\n cdx_dma_map(struct rte_device *dev, void *addr, uint64_t iova, size_t len)\n {\n@@ -595,7 +671,7 @@ cdx_dma_unmap(struct rte_device *dev, void *addr, uint64_t iova, size_t len)\n }\n \n static enum rte_iova_mode\n-rte_cdx_get_iommu_class(void)\n+cdx_get_iommu_class(void)\n {\n \tif (TAILQ_EMPTY(&rte_cdx_bus.device_list))\n \t\treturn RTE_IOVA_DC;\n@@ -603,15 +679,61 @@ rte_cdx_get_iommu_class(void)\n \treturn RTE_IOVA_VA;\n }\n \n+static int\n+cdx_dev_match(const struct rte_device *dev,\n+\t\tconst void *_kvlist)\n+{\n+\tconst struct rte_kvargs *kvlist = _kvlist;\n+\tconst char *key = cdx_params_keys[RTE_CDX_PARAM_NAME];\n+\tconst char *name;\n+\n+\t/* no kvlist arg, all devices match */\n+\tif (kvlist == NULL)\n+\t\treturn 0;\n+\n+\t/* if key is present in kvlist and does not match, filter device */\n+\tname = rte_kvargs_get(kvlist, key);\n+\tif (name != NULL && strcmp(name, dev->name))\n+\t\treturn -1;\n+\n+\treturn 0;\n+}\n+\n+static void *\n+cdx_dev_iterate(const void *start,\n+\t\tconst char *str,\n+\t\tconst struct rte_dev_iterator *it __rte_unused)\n+{\n+\trte_bus_find_device_t find_device;\n+\tstruct rte_kvargs *kvargs = NULL;\n+\tstruct rte_device *dev;\n+\n+\tif (str != NULL) {\n+\t\tkvargs = rte_kvargs_parse(str, cdx_params_keys);\n+\t\tif (kvargs == NULL) {\n+\t\t\tCDX_BUS_ERR(\"cannot parse argument list %s\", str);\n+\t\t\trte_errno = EINVAL;\n+\t\t\treturn NULL;\n+\t\t}\n+\t}\n+\tfind_device = rte_cdx_bus.bus.find_device;\n+\tdev = find_device(start, cdx_dev_match, kvargs);\n+\trte_kvargs_free(kvargs);\n+\treturn dev;\n+}\n+\n struct rte_cdx_bus rte_cdx_bus = {\n \t.bus = {\n-\t\t.scan = rte_cdx_scan,\n+\t\t.scan = cdx_scan,\n \t\t.probe = cdx_probe,\n \t\t.find_device = cdx_find_device,\n+\t\t.plug = cdx_plug,\n+\t\t.unplug = cdx_unplug,\n \t\t.parse = cdx_parse,\n \t\t.dma_map = cdx_dma_map,\n \t\t.dma_unmap = cdx_dma_unmap,\n-\t\t.get_iommu_class = rte_cdx_get_iommu_class,\n+\t\t.get_iommu_class = cdx_get_iommu_class,\n+\t\t.dev_iterate = cdx_dev_iterate,\n \t},\n \t.device_list = TAILQ_HEAD_INITIALIZER(rte_cdx_bus.device_list),\n \t.driver_list = TAILQ_HEAD_INITIALIZER(rte_cdx_bus.driver_list),\ndiff --git a/drivers/bus/cdx/rte_bus_cdx.h b/drivers/bus/cdx/rte_bus_cdx.h\nindex a6170347dd..a715dee50b 100644\n--- a/drivers/bus/cdx/rte_bus_cdx.h\n+++ b/drivers/bus/cdx/rte_bus_cdx.h\n@@ -78,6 +78,7 @@ struct rte_cdx_id {\n struct rte_cdx_device {\n \tRTE_TAILQ_ENTRY(rte_cdx_device) next;\t/**< Next probed CDX device. */\n \tstruct rte_device device;\t\t/**< Inherit core device */\n+\tstruct rte_cdx_driver *driver;\t\t/**< CDX driver used in probing */\n \tstruct rte_cdx_id id;\t\t\t/**< CDX ID. */\n \tstruct rte_mem_resource mem_resource[CDX_MAX_RESOURCE];\n \t\t\t\t\t\t/**< CDX Memory Resource */\n", "prefixes": [ "4/6" ] }