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{
    "id": 52142,
    "url": "http://patches.dpdk.org/api/covers/52142/?format=api",
    "web_url": "http://patches.dpdk.org/project/dpdk/cover/20190403071844.21126-1-tiwei.bie@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": "<20190403071844.21126-1-tiwei.bie@intel.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20190403071844.21126-1-tiwei.bie@intel.com",
    "date": "2019-04-03T07:18:41",
    "name": "[RFC,0/3] Add mdev (Mediated device) support in DPDK",
    "submitter": {
        "id": 617,
        "url": "http://patches.dpdk.org/api/people/617/?format=api",
        "name": "Tiwei Bie",
        "email": "tiwei.bie@intel.com"
    },
    "mbox": "http://patches.dpdk.org/project/dpdk/cover/20190403071844.21126-1-tiwei.bie@intel.com/mbox/",
    "series": [
        {
            "id": 4075,
            "url": "http://patches.dpdk.org/api/series/4075/?format=api",
            "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=4075",
            "date": "2019-04-03T07:18:41",
            "name": "Add mdev (Mediated device) support in DPDK",
            "version": 1,
            "mbox": "http://patches.dpdk.org/series/4075/mbox/"
        }
    ],
    "comments": "http://patches.dpdk.org/api/covers/52142/comments/",
    "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 0D21A5689;\n\tWed,  3 Apr 2019 09:19:27 +0200 (CEST)",
            "from mga02.intel.com (mga02.intel.com [134.134.136.20])\n\tby dpdk.org (Postfix) with ESMTP id 943294F9A\n\tfor <dev@dpdk.org>; Wed,  3 Apr 2019 09:19:24 +0200 (CEST)",
            "from orsmga007.jf.intel.com ([10.7.209.58])\n\tby orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t03 Apr 2019 00:19:23 -0700",
            "from dpdk-tbie.sh.intel.com ([10.67.104.173])\n\tby orsmga007.jf.intel.com with ESMTP; 03 Apr 2019 00:19:22 -0700"
        ],
        "X-Amp-Result": "SKIPPED(no attachment in message)",
        "X-Amp-File-Uploaded": "False",
        "X-ExtLoop1": "1",
        "X-IronPort-AV": "E=Sophos;i=\"5.60,303,1549958400\"; d=\"scan'208\";a=\"128206231\"",
        "From": "Tiwei Bie <tiwei.bie@intel.com>",
        "To": "dev@dpdk.org",
        "Cc": "cunming.liang@intel.com, bruce.richardson@intel.com,\n\talejandro.lucero@netronome.com",
        "Date": "Wed,  3 Apr 2019 15:18:41 +0800",
        "Message-Id": "<20190403071844.21126-1-tiwei.bie@intel.com>",
        "X-Mailer": "git-send-email 2.17.1",
        "Subject": "[dpdk-dev] [RFC 0/3] Add mdev (Mediated device) support in DPDK",
        "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": "Hi everyone,\n\nThis is a draft implementation of the mdev (Mediated device [1])\nbus support in DPDK. Mdev is a way to virtualize devices in Linux\nkernel. Based on the device-api (mdev_type/device_api), there could\nbe different types of mdev devices (e.g. vfio-pci). In this RFC,\none mdev bus is introduced to scan the mdev devices in the system\nand do the probe based on the device-api.\n\nTake the mdev devices whose device-api is \"vfio-pci\" as an example,\nin this RFC, these devices will be probed by a mdev driver provided\nby PCI bus, which will plug them to the PCI bus. And they will be\nprobed with the drivers registered on the PCI bus based on VendorID/\nDeviceID/... then.\n\n                     +----------+\n                     | mdev bus |\n                     +----+-----+\n                          |\n         +----------------+----+------+------+\n         |                     |      |      |\n   mdev_vfio_pci               ......\n(device-api: vfio-pci)\n\nThere are also other ways to add mdev device support in DPDK (e.g.\nlet PCI bus scan /sys/bus/mdev/devices directly). Comments would be\nappreciated!\n\n[1] https://github.com/torvalds/linux/blob/master/Documentation/vfio-mediated-device.txt\n\nThanks,\nTiwei\n\nTiwei Bie (3):\n  eal: add a helper for reading string from sysfs\n  bus/mdev: add mdev bus support\n  bus/pci: add mdev support\n\n config/common_base                        |   5 +\n config/common_linux                       |   1 +\n drivers/bus/Makefile                      |   1 +\n drivers/bus/mdev/Makefile                 |  41 +++\n drivers/bus/mdev/linux/Makefile           |   6 +\n drivers/bus/mdev/linux/mdev.c             | 117 ++++++++\n drivers/bus/mdev/mdev.c                   | 310 ++++++++++++++++++++++\n drivers/bus/mdev/meson.build              |  15 ++\n drivers/bus/mdev/private.h                |  90 +++++++\n drivers/bus/mdev/rte_bus_mdev.h           | 141 ++++++++++\n drivers/bus/mdev/rte_bus_mdev_version.map |  12 +\n drivers/bus/meson.build                   |   2 +-\n drivers/bus/pci/Makefile                  |   3 +\n drivers/bus/pci/linux/Makefile            |   4 +\n drivers/bus/pci/linux/pci_vfio.c          |  35 ++-\n drivers/bus/pci/linux/pci_vfio_mdev.c     | 305 +++++++++++++++++++++\n drivers/bus/pci/meson.build               |   4 +-\n drivers/bus/pci/pci_common.c              |  17 +-\n drivers/bus/pci/private.h                 |   9 +\n drivers/bus/pci/rte_bus_pci.h             |  11 +-\n lib/librte_eal/common/eal_filesystem.h    |   7 +\n lib/librte_eal/freebsd/eal/eal.c          |  22 ++\n lib/librte_eal/linux/eal/eal.c            |  22 ++\n lib/librte_eal/rte_eal_version.map        |   1 +\n mk/rte.app.mk                             |   1 +\n 25 files changed, 1163 insertions(+), 19 deletions(-)\n create mode 100644 drivers/bus/mdev/Makefile\n create mode 100644 drivers/bus/mdev/linux/Makefile\n create mode 100644 drivers/bus/mdev/linux/mdev.c\n create mode 100644 drivers/bus/mdev/mdev.c\n create mode 100644 drivers/bus/mdev/meson.build\n create mode 100644 drivers/bus/mdev/private.h\n create mode 100644 drivers/bus/mdev/rte_bus_mdev.h\n create mode 100644 drivers/bus/mdev/rte_bus_mdev_version.map\n create mode 100644 drivers/bus/pci/linux/pci_vfio_mdev.c"
}