blob: df16c755b4dafeb915d7c6ab4fb7535b5a38d83d [file] [log] [blame]
Thomas Gleixnerec8f24b2019-05-19 13:07:45 +01001# SPDX-License-Identifier: GPL-2.0-only
Allen Hubbee26a5842015-04-09 10:33:20 -04002menuconfig NTB
3 tristate "Non-Transparent Bridge support"
4 depends on PCI
5 help
6 The PCI-E Non-transparent bridge hardware is a point-to-point PCI-E bus
7 connecting 2 systems. When configured, writes to the device's PCI
8 mapped memory will be mirrored to a buffer on the remote system. The
9 ntb Linux driver uses this point-to-point communication as a method to
10 transfer data from one system to the other.
Jon Masonfce8a7b2012-11-16 19:27:12 -070011
Allen Hubbee26a5842015-04-09 10:33:20 -040012 If unsure, say N.
Jon Masonfce8a7b2012-11-16 19:27:12 -070013
Allen Hubbee26a5842015-04-09 10:33:20 -040014if NTB
15
Logan Gunthorpe26b3a372019-05-23 16:30:56 -060016config NTB_MSI
17 bool "MSI Interrupt Support"
18 depends on PCI_MSI
19 help
20 Support using MSI interrupt forwarding instead of (or in addition to)
21 hardware doorbells. MSI interrupts typically offer lower latency
22 than doorbells and more MSI interrupts can be made available to
23 clients. However this requires an extra memory window and support
24 in the hardware driver for creating the MSI interrupts.
25
26 If unsure, say N.
Allen Hubbee26a5842015-04-09 10:33:20 -040027source "drivers/ntb/hw/Kconfig"
28
Allen Hubbe963de472015-04-15 11:12:41 -040029source "drivers/ntb/test/Kconfig"
30
Allen Hubbee26a5842015-04-09 10:33:20 -040031config NTB_TRANSPORT
32 tristate "NTB Transport Client"
33 help
34 This is a transport driver that enables connected systems to exchange
35 messages over the ntb hardware. The transport exposes a queue pair api
36 to client drivers.
37
38 If unsure, say N.
39
40endif # NTB