1 .. SPDX-License-Identifier: GPL-2.0+ 2 3 ==================================================================== 4 Linux kernel networking driver for Marvell's Octeon PCI Endpoint NIC 5 ==================================================================== 6 7 Network driver for Marvell's Octeon PCI EndPoint NIC. 8 Copyright (c) 2020 Marvell International Ltd. 9 10 Contents 11 ======== 12 13 - `Overview`_ 14 - `Supported Devices`_ 15 - `Interface Control`_ 16 17 Overview 18 ======== 19 This driver implements networking functionality of Marvell's Octeon PCI 20 EndPoint NIC. 21 22 Supported Devices 23 ================= 24 Currently, this driver support following devices: 25 * Network controller: Cavium, Inc. Device b100 26 * Network controller: Cavium, Inc. Device b200 27 * Network controller: Cavium, Inc. Device b400 28 * Network controller: Cavium, Inc. Device b900 29 * Network controller: Cavium, Inc. Device ba00 30 * Network controller: Cavium, Inc. Device bc00 31 * Network controller: Cavium, Inc. Device bd00 32 33 Interface Control 34 ================= 35 Network Interface control like changing mtu, link speed, link down/up are 36 done by writing command to mailbox command queue, a mailbox interface 37 implemented through a reserved region in BAR4. 38 This driver writes the commands into the mailbox and the firmware on the 39 Octeon device processes them. The firmware also sends unsolicited notifications 40 to driver for events suchs as link change, through notification queue 41 implemented as part of mailbox interface.
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