diff --git a/share/man/man4/ntb_hw_amd.4 b/share/man/man4/ntb_hw_amd.4 index 56e0b3a741d4..be4944a3b260 100644 --- a/share/man/man4/ntb_hw_amd.4 +++ b/share/man/man4/ntb_hw_amd.4 @@ -1,4 +1,6 @@ .\" +.\" SPDX-License-Identifier: BSD-2-Clause +.\" .\" Copyright (c) 2019 Rajesh Kumar .\" All rights reserved. .\" @@ -30,28 +32,12 @@ .Nm ntb_hw_amd .Nd AMD Non-Transparent Bridge driver .Sh SYNOPSIS -To compile this driver into your kernel, -place the following lines in your kernel configuration file: -.Bd -ragged -offset indent -.Cd "device ntb" -.Cd "device ntb_hw_amd" -.Ed +.Cd device ntb +.Cd device ntb_hw_amd .Pp -Or, to load the driver as a module at boot, place the following line in +In .Xr loader.conf 5 : -.Bd -literal -offset indent -ntb_hw_amd_load="YES" -.Ed -.Pp -The following sysctls are supported in this driver -.Bl -ohang -.It Va dev.ntb_hw.X.info -Reading this sysctl will give the basic details like the number of memory -windows, scratchpads and doorbells exposed by the NTB on the local host to -access the devices beyond the bridge. -It also provides details about the masked doorbells, translation address and -size limit of each exposed memory window and link status information. -.El +.Cd ntb_hw_amd_load="YES" .Sh DESCRIPTION The .Nm ntb_hw_amd @@ -75,6 +61,17 @@ mode is supported now), role of the host in the topology. This needs to be done on both systems. .Pp The BAR size for memory windows is configured to 1 MiB by default. +.Sh SYSCTL VARIABLES +The following read-only variable is available via +.Xr sysctl 8 : +.Bl -tag -width indent +.It Va dev.ntb_hw.%d.info +Reading this sysctl will give the basic details like the number of memory +windows, scratchpads and doorbells exposed by the NTB on the local host to +access the devices beyond the bridge. +It also provides details about the masked doorbells, translation address and +size limit of each exposed memory window and link status information. +.El .Sh SEE ALSO .Xr if_ntb 4 , .Xr ntb 4 ,