/usr/src/linux-headers-5.15.0-181/drivers/ntb/hw/mscc
Edit: /usr/src/linux-headers-5.15.0-181/drivers/ntb/hw/mscc/Kconfig (323B)
# SPDX-License-Identifier: GPL-2.0-only
config NTB_SWITCHTEC
tristate "MicroSemi Switchtec Non-Transparent Bridge Support"
select PCI_SW_SWITCHTEC
help
Enables NTB support for Switchtec PCI switches. This also
selects the Switchtec management driver as they share the same
hardware interface.
If unsure, say N.