Thomas Gleixner | ec8f24b | 2019-05-19 13:07:45 +0100 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0-only |
Allen Hubbe | e26a584 | 2015-04-09 10:33:20 -0400 | [diff] [blame] | 2 | menuconfig 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 Mason | fce8a7b | 2012-11-16 19:27:12 -0700 | [diff] [blame] | 11 | |
Allen Hubbe | e26a584 | 2015-04-09 10:33:20 -0400 | [diff] [blame] | 12 | If unsure, say N. |
Jon Mason | fce8a7b | 2012-11-16 19:27:12 -0700 | [diff] [blame] | 13 | |
Allen Hubbe | e26a584 | 2015-04-09 10:33:20 -0400 | [diff] [blame] | 14 | if NTB |
| 15 | |
Logan Gunthorpe | 26b3a37 | 2019-05-23 16:30:56 -0600 | [diff] [blame] | 16 | config 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 Hubbe | e26a584 | 2015-04-09 10:33:20 -0400 | [diff] [blame] | 27 | source "drivers/ntb/hw/Kconfig" |
| 28 | |
Allen Hubbe | 963de47 | 2015-04-15 11:12:41 -0400 | [diff] [blame] | 29 | source "drivers/ntb/test/Kconfig" |
| 30 | |
Allen Hubbe | e26a584 | 2015-04-09 10:33:20 -0400 | [diff] [blame] | 31 | config 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 | |
| 40 | endif # NTB |