# # IBM Coherent Accelerator (CXL) compatible devices # config CXL_BASE bool default n select PPC_COPRO_BASE config CXL_KERNEL_API bool default n config CXL_EEH bool default n config CXL tristate "Support for IBM Coherent Accelerators (CXL)" depends on PPC_POWERNV && PCI_MSI && EEH select CXL_BASE select CXL_KERNEL_API select CXL_EEH default m help Select this option to enable driver support for IBM Coherent Accelerators (CXL). CXL is otherwise known as Coherent Accelerator Processor Interface (CAPI). CAPI allows accelerators in FPGAs to be coherently attached to a CPU via an MMU. This driver enables userspace programs to access these accelerators via /dev/cxl/afuM.N devices. CAPI adapters are found in POWER8 based systems. If unsure, say N.