1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0-only 2*4882a593Smuzhiyun# 3*4882a593Smuzhiyun# Open Coherent Accelerator (OCXL) compatible devices 4*4882a593Smuzhiyun# 5*4882a593Smuzhiyun 6*4882a593Smuzhiyunconfig OCXL_BASE 7*4882a593Smuzhiyun bool 8*4882a593Smuzhiyun select PPC_COPRO_BASE 9*4882a593Smuzhiyun 10*4882a593Smuzhiyunconfig OCXL 11*4882a593Smuzhiyun tristate "OpenCAPI coherent accelerator support" 12*4882a593Smuzhiyun depends on HOTPLUG_PCI_POWERNV 13*4882a593Smuzhiyun select OCXL_BASE 14*4882a593Smuzhiyun default m 15*4882a593Smuzhiyun help 16*4882a593Smuzhiyun Select this option to enable the ocxl driver for Open 17*4882a593Smuzhiyun Coherent Accelerator Processor Interface (OpenCAPI) devices. 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun OpenCAPI allows FPGA and ASIC accelerators to be coherently 20*4882a593Smuzhiyun attached to a CPU over an OpenCAPI link. 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun The ocxl driver enables userspace programs to access these 23*4882a593Smuzhiyun accelerators through devices in /dev/ocxl/. 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun For more information, see https://opencapi.org. 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun This is not to be confused with the support for IBM CAPI 28*4882a593Smuzhiyun accelerators (CONFIG_CXL), which are PCI-based instead of a 29*4882a593Smuzhiyun dedicated OpenCAPI link, and don't follow the same protocol. 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun If unsure, say N. 32