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# SPDX-License-Identifier: GPL-2.0-only
menuconfig NTB
tristate "Non-Transparent Bridge support"
depends on PCI
help
The PCI-E Non-transparent bridge hardware is a point-to-point PCI-E bus
connecting 2 systems. When configured, writes to the device's PCI
mapped memory will be mirrored to a buffer on the remote system. The
ntb Linux driver uses this point-to-point communication as a method to
transfer data from one system to the other.
If unsure, say N.
if NTB
config NTB_MSI
bool "MSI Interrupt Support"
depends on PCI_MSI
help
Support using MSI interrupt forwarding instead of (or in addition to)
hardware doorbells. MSI interrupts typically offer lower latency
than doorbells and more MSI interrupts can be made available to
clients. However this requires an extra memory window and support
in the hardware driver for creating the MSI interrupts.
If unsure, say N.
source "drivers/ntb/hw/Kconfig"
source "drivers/ntb/test/Kconfig"
config NTB_TRANSPORT
tristate "NTB Transport Client"
help
This is a transport driver that enables connected systems to exchange
messages over the ntb hardware. The transport exposes a queue pair api
to client drivers.
If unsure, say N.
endif # NTB
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