1# 2# IBM Coherent Accelerator (CXL) compatible devices 3# 4 5config CXL_BASE 6 bool 7 default n 8 select PPC_COPRO_BASE 9 10config CXL_AFU_DRIVER_OPS 11 bool 12 default n 13 14config CXL_LIB 15 bool 16 default n 17 18config CXL 19 tristate "Support for IBM Coherent Accelerators (CXL)" 20 depends on PPC_POWERNV && PCI_MSI && EEH 21 select CXL_BASE 22 select CXL_AFU_DRIVER_OPS 23 select CXL_LIB 24 default m 25 help 26 Select this option to enable driver support for IBM Coherent 27 Accelerators (CXL). CXL is otherwise known as Coherent Accelerator 28 Processor Interface (CAPI). CAPI allows accelerators in FPGAs to be 29 coherently attached to a CPU via an MMU. This driver enables 30 userspace programs to access these accelerators via /dev/cxl/afuM.N 31 devices. 32 33 CAPI adapters are found in POWER8 based systems. 34 35 If unsure, say N. 36 37config CXL_BIMODAL 38 bool "Support for bi-modal CAPI cards" 39 depends on HOTPLUG_PCI_POWERNV = y && CXL || HOTPLUG_PCI_POWERNV = m && CXL = m 40 default y 41 help 42 Select this option to enable support for bi-modal CAPI cards, such as 43 the Mellanox CX-4. 44