octeon_ep.rst (1159B)
1.. SPDX-License-Identifier: GPL-2.0+ 2 3==================================================================== 4Linux kernel networking driver for Marvell's Octeon PCI Endpoint NIC 5==================================================================== 6 7Network driver for Marvell's Octeon PCI EndPoint NIC. 8Copyright (c) 2020 Marvell International Ltd. 9 10Contents 11======== 12 13- `Overview`_ 14- `Supported Devices`_ 15- `Interface Control`_ 16 17Overview 18======== 19This driver implements networking functionality of Marvell's Octeon PCI 20EndPoint NIC. 21 22Supported Devices 23================= 24Currently, this driver support following devices: 25 * Network controller: Cavium, Inc. Device b200 26 27Interface Control 28================= 29Network Interface control like changing mtu, link speed, link down/up are 30done by writing command to mailbox command queue, a mailbox interface 31implemented through a reserved region in BAR4. 32This driver writes the commands into the mailbox and the firmware on the 33Octeon device processes them. The firmware also sends unsolicited notifications 34to driver for events suchs as link change, through notification queue 35implemented as part of mailbox interface.