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ionic: Add basic framework for IONIC Network device driver
This patch adds a basic driver framework for the Pensando IONIC network device. There is no functionality right now other than the ability to load and unload. Signed-off-by: Shannon Nelson <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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‎Documentation/networking/device_drivers/index.rst

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intel/ice
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google/gve
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mellanox/mlx5
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pensando/ionic
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.. only:: subproject
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‎Documentation/networking/device_drivers/pensando/ionic.rst

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.. SPDX-License-Identifier: GPL-2.0+
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==========================================================
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Linux* Driver for the Pensando(R) Ethernet adapter family
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==========================================================
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Pensando Linux Ethernet driver.
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Copyright(c) 2019 Pensando Systems, Inc
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Contents
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========
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- Identifying the Adapter
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- Support
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Identifying the Adapter
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=======================
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To find if one or more Pensando PCI Ethernet devices are installed on the
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host, check for the PCI devices::
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$ lspci -d 1dd8:
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b5:00.0 Ethernet controller: Device 1dd8:1002
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b6:00.0 Ethernet controller: Device 1dd8:1002
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If such devices are listed as above, then the ionic.ko driver should find
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and configure them for use. There should be log entries in the kernel
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messages such as these::
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$ dmesg | grep ionic
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ionic Pensando Ethernet NIC Driver, ver 0.15.0-k
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ionic 0000:b5:00.0 enp181s0: renamed from eth0
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ionic 0000:b6:00.0 enp182s0: renamed from eth0
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Support
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=======
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For general Linux networking support, please use the netdev mailing
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list, which is monitored by Pensando personnel::
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[email protected]
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For more specific support needs, please use the Pensando driver support
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email::
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[email protected]

‎MAINTAINERS

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S: Maintained
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F: drivers/platform/x86/peaq-wmi.c
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PENSANDO ETHERNET DRIVERS
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M: Shannon Nelson <[email protected]>
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M: Pensando Drivers <[email protected]>
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L: [email protected]
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S: Supported
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F: Documentation/networking/device_drivers/pensando/ionic.rst
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F: drivers/net/ethernet/pensando/
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PER-CPU MEMORY ALLOCATOR
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M: Dennis Zhou <[email protected]>
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M: Tejun Heo <[email protected]>

‎drivers/net/ethernet/Kconfig

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source "drivers/net/ethernet/packetengines/Kconfig"
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source "drivers/net/ethernet/pasemi/Kconfig"
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source "drivers/net/ethernet/pensando/Kconfig"
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source "drivers/net/ethernet/qlogic/Kconfig"
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source "drivers/net/ethernet/qualcomm/Kconfig"
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source "drivers/net/ethernet/rdc/Kconfig"

‎drivers/net/ethernet/Makefile

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@@ -97,3 +97,4 @@ obj-$(CONFIG_NET_VENDOR_WIZNET) += wiznet/
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obj-$(CONFIG_NET_VENDOR_XILINX) += xilinx/
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obj-$(CONFIG_NET_VENDOR_XIRCOM) += xircom/
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obj-$(CONFIG_NET_VENDOR_SYNOPSYS) += synopsys/
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obj-$(CONFIG_NET_VENDOR_PENSANDO) += pensando/

‎drivers/net/ethernet/pensando/Kconfig

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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2019 Pensando Systems, Inc
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#
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# Pensando device configuration
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#
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config NET_VENDOR_PENSANDO
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bool "Pensando devices"
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default y
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help
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If you have a network (Ethernet) card belonging to this class, say Y.
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Note that the answer to this question doesn't directly affect the
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kernel: saying N will just cause the configurator to skip all
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the questions about Pensando cards. If you say Y, you will be asked
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for your specific card in the following questions.
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if NET_VENDOR_PENSANDO
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config IONIC
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tristate "Pensando Ethernet IONIC Support"
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depends on 64BIT && PCI
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help
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This enables the support for the Pensando family of Ethernet
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adapters. More specific information on this driver can be
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found in
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<file:Documentation/networking/device_drivers/pensando/ionic.rst>.
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To compile this driver as a module, choose M here. The module
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will be called ionic.
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endif # NET_VENDOR_PENSANDO

‎drivers/net/ethernet/pensando/Makefile

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# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the Pensando network device drivers.
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#
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obj-$(CONFIG_IONIC) += ionic/

‎drivers/net/ethernet/pensando/ionic/Makefile

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# SPDX-License-Identifier: GPL-2.0
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# Copyright(c) 2017 - 2019 Pensando Systems, Inc
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obj-$(CONFIG_IONIC) := ionic.o
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ionic-y := ionic_main.o ionic_bus_pci.o ionic_devlink.o

‎drivers/net/ethernet/pensando/ionic/ionic.h

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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
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#ifndef _IONIC_H_
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#define _IONIC_H_
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#include "ionic_devlink.h"
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#define IONIC_DRV_NAME "ionic"
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#define IONIC_DRV_DESCRIPTION "Pensando Ethernet NIC Driver"
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#define IONIC_DRV_VERSION "0.15.0-k"
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#define PCI_VENDOR_ID_PENSANDO 0x1dd8
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#define PCI_DEVICE_ID_PENSANDO_IONIC_ETH_PF 0x1002
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#define PCI_DEVICE_ID_PENSANDO_IONIC_ETH_VF 0x1003
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#define IONIC_SUBDEV_ID_NAPLES_25 0x4000
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#define IONIC_SUBDEV_ID_NAPLES_100_4 0x4001
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#define IONIC_SUBDEV_ID_NAPLES_100_8 0x4002
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struct ionic {
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struct pci_dev *pdev;
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struct device *dev;
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};
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#endif /* _IONIC_H_ */

‎drivers/net/ethernet/pensando/ionic/ionic_bus.h

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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
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#ifndef _IONIC_BUS_H_
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#define _IONIC_BUS_H_
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int ionic_bus_register_driver(void);
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void ionic_bus_unregister_driver(void);
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#endif /* _IONIC_BUS_H_ */

‎drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c

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// SPDX-License-Identifier: GPL-2.0
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/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/pci.h>
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#include "ionic.h"
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#include "ionic_bus.h"
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/* Supported devices */
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static const struct pci_device_id ionic_id_table[] = {
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{ PCI_VDEVICE(PENSANDO, PCI_DEVICE_ID_PENSANDO_IONIC_ETH_PF) },
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{ PCI_VDEVICE(PENSANDO, PCI_DEVICE_ID_PENSANDO_IONIC_ETH_VF) },
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{ 0, } /* end of table */
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};
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MODULE_DEVICE_TABLE(pci, ionic_id_table);
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static int ionic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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struct device *dev = &pdev->dev;
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struct ionic *ionic;
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ionic = ionic_devlink_alloc(dev);
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if (!ionic)
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return -ENOMEM;
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ionic->pdev = pdev;
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ionic->dev = dev;
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pci_set_drvdata(pdev, ionic);
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return 0;
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}
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static void ionic_remove(struct pci_dev *pdev)
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{
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struct ionic *ionic = pci_get_drvdata(pdev);
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ionic_devlink_free(ionic);
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}
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static struct pci_driver ionic_driver = {
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.name = IONIC_DRV_NAME,
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.id_table = ionic_id_table,
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.probe = ionic_probe,
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.remove = ionic_remove,
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};
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int ionic_bus_register_driver(void)
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{
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return pci_register_driver(&ionic_driver);
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}
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void ionic_bus_unregister_driver(void)
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{
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pci_unregister_driver(&ionic_driver);
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}

‎drivers/net/ethernet/pensando/ionic/ionic_devlink.c

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// SPDX-License-Identifier: GPL-2.0
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/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include "ionic.h"
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#include "ionic_bus.h"
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#include "ionic_devlink.h"
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static int ionic_dl_info_get(struct devlink *dl, struct devlink_info_req *req,
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struct netlink_ext_ack *extack)
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{
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return devlink_info_driver_name_put(req, IONIC_DRV_NAME);
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}
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static const struct devlink_ops ionic_dl_ops = {
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.info_get = ionic_dl_info_get,
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};
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struct ionic *ionic_devlink_alloc(struct device *dev)
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{
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struct devlink *dl;
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dl = devlink_alloc(&ionic_dl_ops, sizeof(struct ionic));
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return devlink_priv(dl);
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}
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void ionic_devlink_free(struct ionic *ionic)
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{
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struct devlink *dl = priv_to_devlink(ionic);
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devlink_free(dl);
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}

‎drivers/net/ethernet/pensando/ionic/ionic_devlink.h

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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
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#ifndef _IONIC_DEVLINK_H_
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#define _IONIC_DEVLINK_H_
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#include <net/devlink.h>
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struct ionic *ionic_devlink_alloc(struct device *dev);
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void ionic_devlink_free(struct ionic *ionic);
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#endif /* _IONIC_DEVLINK_H_ */

‎drivers/net/ethernet/pensando/ionic/ionic_main.c

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// SPDX-License-Identifier: GPL-2.0
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/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
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#include <linux/module.h>
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#include <linux/version.h>
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#include <linux/netdevice.h>
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#include <linux/utsname.h>
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#include "ionic.h"
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#include "ionic_bus.h"
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MODULE_DESCRIPTION(IONIC_DRV_DESCRIPTION);
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MODULE_AUTHOR("Pensando Systems, Inc");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(IONIC_DRV_VERSION);
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static int __init ionic_init_module(void)
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{
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pr_info("%s %s, ver %s\n",
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IONIC_DRV_NAME, IONIC_DRV_DESCRIPTION, IONIC_DRV_VERSION);
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return ionic_bus_register_driver();
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}
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static void __exit ionic_cleanup_module(void)
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{
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ionic_bus_unregister_driver();
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pr_info("%s removed\n", IONIC_DRV_NAME);
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}
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module_init(ionic_init_module);
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module_exit(ionic_cleanup_module);

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