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- # 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
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