162306a36Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ci# 362306a36Sopenharmony_ci# IBM Coherent Accelerator (CXL) compatible devices 462306a36Sopenharmony_ci# 562306a36Sopenharmony_ci 662306a36Sopenharmony_ciconfig CXL_BASE 762306a36Sopenharmony_ci bool 862306a36Sopenharmony_ci select PPC_COPRO_BASE 962306a36Sopenharmony_ci select PPC_64S_HASH_MMU 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ciconfig CXL 1262306a36Sopenharmony_ci tristate "Support for IBM Coherent Accelerators (CXL)" 1362306a36Sopenharmony_ci depends on PPC_POWERNV && PCI_MSI && EEH 1462306a36Sopenharmony_ci select CXL_BASE 1562306a36Sopenharmony_ci default m 1662306a36Sopenharmony_ci help 1762306a36Sopenharmony_ci Select this option to enable driver support for IBM Coherent 1862306a36Sopenharmony_ci Accelerators (CXL). CXL is otherwise known as Coherent Accelerator 1962306a36Sopenharmony_ci Processor Interface (CAPI). CAPI allows accelerators in FPGAs to be 2062306a36Sopenharmony_ci coherently attached to a CPU via an MMU. This driver enables 2162306a36Sopenharmony_ci userspace programs to access these accelerators via /dev/cxl/afuM.N 2262306a36Sopenharmony_ci devices. 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_ci CAPI adapters are found in POWER8 based systems. 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ci If unsure, say N. 27