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 <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shannon Nelson 2019-09-03 15:28:04 -07:00 committed by David S. Miller
parent 7d5aa9a524
commit df69ba4321
14 changed files with 272 additions and 0 deletions

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@ -23,6 +23,7 @@ Contents:
intel/ice
google/gve
mellanox/mlx5
pensando/ionic
.. only:: subproject

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

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@ -12608,6 +12608,14 @@ L: platform-driver-x86@vger.kernel.org
S: Maintained
F: drivers/platform/x86/peaq-wmi.c
PENSANDO ETHERNET DRIVERS
M: Shannon Nelson <snelson@pensando.io>
M: Pensando Drivers <drivers@pensando.io>
L: netdev@vger.kernel.org
S: Supported
F: Documentation/networking/device_drivers/pensando/ionic.rst
F: drivers/net/ethernet/pensando/
PER-CPU MEMORY ALLOCATOR
M: Dennis Zhou <dennis@kernel.org>
M: Tejun Heo <tj@kernel.org>

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@ -168,6 +168,7 @@ config ETHOC
source "drivers/net/ethernet/packetengines/Kconfig"
source "drivers/net/ethernet/pasemi/Kconfig"
source "drivers/net/ethernet/pensando/Kconfig"
source "drivers/net/ethernet/qlogic/Kconfig"
source "drivers/net/ethernet/qualcomm/Kconfig"
source "drivers/net/ethernet/rdc/Kconfig"

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

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

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

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

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

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

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

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

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

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