ionic: Add basic framework for IONIC Network device driver
authorShannon Nelson <snelson@pensando.io>
Tue, 3 Sep 2019 22:28:04 +0000 (15:28 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 5 Sep 2019 07:24:43 +0000 (09:24 +0200)
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>
14 files changed:
Documentation/networking/device_drivers/index.rst
Documentation/networking/device_drivers/pensando/ionic.rst [new file with mode: 0644]
MAINTAINERS
drivers/net/ethernet/Kconfig
drivers/net/ethernet/Makefile
drivers/net/ethernet/pensando/Kconfig [new file with mode: 0644]
drivers/net/ethernet/pensando/Makefile [new file with mode: 0644]
drivers/net/ethernet/pensando/ionic/Makefile [new file with mode: 0644]
drivers/net/ethernet/pensando/ionic/ionic.h [new file with mode: 0644]
drivers/net/ethernet/pensando/ionic/ionic_bus.h [new file with mode: 0644]
drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c [new file with mode: 0644]
drivers/net/ethernet/pensando/ionic/ionic_devlink.c [new file with mode: 0644]
drivers/net/ethernet/pensando/ionic/ionic_devlink.h [new file with mode: 0644]
drivers/net/ethernet/pensando/ionic/ionic_main.c [new file with mode: 0644]

index 2b7fefe..57fec66 100644 (file)
@@ -23,6 +23,7 @@ Contents:
    intel/ice
    google/gve
    mellanox/mlx5
+   pensando/ionic
 
 .. only::  subproject
 
diff --git a/Documentation/networking/device_drivers/pensando/ionic.rst b/Documentation/networking/device_drivers/pensando/ionic.rst
new file mode 100644 (file)
index 0000000..67b6839
--- /dev/null
@@ -0,0 +1,43 @@
+.. 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
index a081c47..c1fb8fb 100644 (file)
@@ -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>
index 93a2d4d..2830dc2 100644 (file)
@@ -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"
index fb9155c..061edd2 100644 (file)
@@ -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-$(CONFIG_NET_VENDOR_PENSANDO) += pensando/
diff --git a/drivers/net/ethernet/pensando/Kconfig b/drivers/net/ethernet/pensando/Kconfig
new file mode 100644 (file)
index 0000000..5ea570b
--- /dev/null
@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2019 Pensando Systems, Inc
+#
+# Pensando device configuration
+#
+
+config NET_VENDOR_PENSANDO
+       bool "Pensando devices"
+       default y
+       help
+         If you have a network (Ethernet) card belonging to this class, say Y.
+
+         Note that the answer to this question doesn't directly affect the
+         kernel: saying N will just cause the configurator to skip all
+         the questions about Pensando cards. If you say Y, you will be asked
+         for your specific card in the following questions.
+
+if NET_VENDOR_PENSANDO
+
+config IONIC
+       tristate "Pensando Ethernet IONIC Support"
+       depends on 64BIT && PCI
+       help
+         This enables the support for the Pensando family of Ethernet
+         adapters.  More specific information on this driver can be
+         found in
+         <file:Documentation/networking/device_drivers/pensando/ionic.rst>.
+
+          To compile this driver as a module, choose M here. The module
+          will be called ionic.
+
+endif # NET_VENDOR_PENSANDO
diff --git a/drivers/net/ethernet/pensando/Makefile b/drivers/net/ethernet/pensando/Makefile
new file mode 100644 (file)
index 0000000..21ce749
--- /dev/null
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the Pensando network device drivers.
+#
+
+obj-$(CONFIG_IONIC) += ionic/
diff --git a/drivers/net/ethernet/pensando/ionic/Makefile b/drivers/net/ethernet/pensando/ionic/Makefile
new file mode 100644 (file)
index 0000000..f174e8f
--- /dev/null
@@ -0,0 +1,6 @@
+# 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
diff --git a/drivers/net/ethernet/pensando/ionic/ionic.h b/drivers/net/ethernet/pensando/ionic/ionic.h
new file mode 100644 (file)
index 0000000..56ccf27
--- /dev/null
@@ -0,0 +1,27 @@
+/* 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_ */
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_bus.h b/drivers/net/ethernet/pensando/ionic/ionic_bus.h
new file mode 100644 (file)
index 0000000..94ba0af
--- /dev/null
@@ -0,0 +1,10 @@
+/* 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_ */
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
new file mode 100644 (file)
index 0000000..2946ce3
--- /dev/null
@@ -0,0 +1,58 @@
+// 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);
+}
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_devlink.c b/drivers/net/ethernet/pensando/ionic/ionic_devlink.c
new file mode 100644 (file)
index 0000000..d2665ce
--- /dev/null
@@ -0,0 +1,35 @@
+// 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);
+}
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_devlink.h b/drivers/net/ethernet/pensando/ionic/ionic_devlink.h
new file mode 100644 (file)
index 0000000..1df5087
--- /dev/null
@@ -0,0 +1,12 @@
+/* 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_ */
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_main.c b/drivers/net/ethernet/pensando/ionic/ionic_main.c
new file mode 100644 (file)
index 0000000..332b528
--- /dev/null
@@ -0,0 +1,32 @@
+// 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);