tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
15 tristate "Support for IBM Coherent Accelerators (CXL)"
16 depends on PPC_POWERNV && PCI_MSI && EEH
17 select CXL_BASE
18 select CXL_AFU_DRIVER_OPS
19 default m
20 help
21 Select this option to enable driver support for IBM Coherent
22 Accelerators (CXL). CXL is otherwise known as Coherent Accelerator
23 Processor Interface (CAPI). CAPI allows accelerators in FPGAs to be
24 coherently attached to a CPU via an MMU. This driver enables
25 userspace programs to access these accelerators via /dev/cxl/afuM.N
26 devices.
27
28 CAPI adapters are found in POWER8 based systems.
29
30 If unsure, say N.
31
32config CXL_BIMODAL
33 bool "Support for bi-modal CAPI cards"
34 depends on HOTPLUG_PCI_POWERNV = y && CXL || HOTPLUG_PCI_POWERNV = m && CXL = m
35 default y
36 help
37 Select this option to enable support for bi-modal CAPI cards, such as
38 the Mellanox CX-4.