1.\"- 2.\" Copyright (c) 2023-2024 Bjoern A. Zeeb 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.Dd September 30, 2024 26.Dt MT7921 4 27.Os 28.Sh NAME 29.Nm mt7921 30.Nd MediaTek IEEE 802.11ax wireless network driver 31.Sh SYNOPSIS 32The driver will auto-load without any user interaction using 33.Xr devmatch 8 34if enabled in 35.Xr rc.conf 5 . 36.Pp 37Only if auto-loading is explicitly disabled, place the following 38lines in 39.Xr rc.conf 5 40to manually load the driver as a module at boot time: 41.Bd -literal -offset indent 42kld_list="${kld_list} if_mt7921" 43.Ed 44.Pp 45The driver should automatically load any 46firmware needed for the particular chipset. 47.Pp 48It is discouraged to load the driver from 49.Xr loader 8 . 50.Sh DESCRIPTION 51The 52.Nm 53driver is derived from MediaTek's Linux mt76 driver. 54.Pp 55This driver requires firmware to be loaded before it will work. 56The package 57.Pa wifi-firmware-mt76-kmod 58from the 59.Pa ports/net/wifi-firmware-mt76-kmod 60port needs to be installed before the driver is loaded. 61Otherwise no 62.Xr wlan 4 63interface can be created using 64.Xr ifconfig 8 . 65.Pp 66The driver uses the 67.\" No LinuxKPI man pages so no .Xr here. 68.Em linuxkpi_wlan 69and 70.Em linuxkpi 71compat framework to bridge between the Linux and 72native 73.Fx 74driver code as well as to the native 75.Xr net80211 4 76wireless stack. 77.Pp 78While 79.Nm 80supports all 802.11 a/b/g/n/ac and ax 81the compatibility code currently only supports 802.11 a/b/g modes. 82Support for 802.11 n/ac is to come. 83.Sh HARDWARE 84The 85.Nm 86driver supports PCIe devices with the following chipsets: 87.Pp 88.Bl -tag -width Ds -offset indent -compact 89.It MediaTek MT7921E 90.El 91.Sh BUGS 92Certainly. 93.Sh SEE ALSO 94.Xr wlan 4 , 95.Xr ifconfig 8 , 96.Xr wpa_supplicant 8 97.Sh HISTORY 98The 99.Nm 100driver first appeared in 101.Fx 14.0 . 102