| # 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 |