1# SPDX-License-Identifier: GPL-2.0-only 2menuconfig 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. 11 12 If unsure, say N. 13 14if NTB 15 16config 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. 27source "drivers/ntb/hw/Kconfig" 28 29source "drivers/ntb/test/Kconfig" 30 31config 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 41