| # 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 |
