| Ian Munsie | 10542ca | 2014-10-08 19:55:01 +1100 | [diff] [blame] | 1 | # |
| 2 | # IBM Coherent Accelerator (CXL) compatible devices |
| 3 | # |
| 4 | |
| 5 | config CXL_BASE |
| 6 | bool |
| 7 | default n |
| 8 | select PPC_COPRO_BASE |
| Ian Munsie | 881632c | 2014-10-08 19:55:04 +1100 | [diff] [blame] | 9 | |
| 10 | config CXL |
| 11 | tristate "Support for IBM Coherent Accelerators (CXL)" |
| 12 | depends on PPC_POWERNV && PCI_MSI |
| 13 | select CXL_BASE |
| 14 | default m |
| 15 | help |
| 16 | Select this option to enable driver support for IBM Coherent |
| 17 | Accelerators (CXL). CXL is otherwise known as Coherent Accelerator |
| 18 | Processor Interface (CAPI). CAPI allows accelerators in FPGAs to be |
| 19 | coherently attached to a CPU via an MMU. This driver enables |
| 20 | userspace programs to access these accelerators via /dev/cxl/afuM.N |
| 21 | devices. |
| 22 | |
| 23 | CAPI adapters are found in POWER8 based systems. |
| 24 | |
| 25 | If unsure, say N. |