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The Linux kernel configuration item CONFIG_CXL
:
CONFIG_PPC_POWERNV && CONFIG_PCI_MSI && CONFIG_EEH
cxl
, cxl_hw
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.
Numeric ID (from LKDDb) and names (from pci.ids) of recognized devices:
12
("Processing accelerators"), subclass: 00
("Processing accelerators"), prog-if: 00
1014
("IBM"), device: 044b
("GenWQE Accelerator Adapter")1014
("IBM"), device: 0477
1014
("IBM"), device: 04cf
1014
("IBM"), device: 0601
1014
("IBM"), device: 0623
1014
("IBM"), device: 0628
Raw data from LKDDb:
lkddb fs "cxl" : CONFIG_CXL CONFIG_CXL_BASE : drivers/misc/cxl/api.c # in 4.10–4.20, 5.0–5.19, 6.0–6.12
lkddb module cxl CONFIG_CXL : drivers/misc/cxl/Kconfig : "Support for IBM Coherent Accelerators (CXL)" # in 3.18–3.19, 4.0–4.17
lkddb module cxl_hw CONFIG_CXL : drivers/misc/cxl/Kconfig : "Support for IBM Coherent Accelerators (CXL)" # in 4.18–4.20, 5.0–5.19, 6.0–6.12
lkddb of "" "" "ibm,coherent-platform-facility" : CONFIG_CXL CONFIG_CXL_BASE CONFIG_PPC_PSERIES : drivers/misc/cxl/of.c # in 4.6–4.20, 5.0–5.19, 6.0–6.12
lkddb pci .... .... .... .... 120000 : CONFIG_CXL CONFIG_CXL_BASE : drivers/misc/cxl/pci.c # in 4.3–4.15
lkddb pci 1014 044b .... .... ...... : CONFIG_CXL CONFIG_CXL_BASE : drivers/misc/cxl/pci.c # in 4.3–4.20, 5.0–5.19, 6.0–6.12
lkddb pci 1014 0477 .... .... ...... : CONFIG_CXL CONFIG_CXL_BASE : drivers/misc/cxl/pci.c # in 4.3–4.20, 5.0–5.19, 6.0–6.12
lkddb pci 1014 04cf .... .... ...... : CONFIG_CXL CONFIG_CXL_BASE : drivers/misc/cxl/pci.c # in 4.3–4.20, 5.0–5.19, 6.0–6.12
lkddb pci 1014 0601 .... .... ...... : CONFIG_CXL CONFIG_CXL_BASE : drivers/misc/cxl/pci.c # in 4.5–4.20, 5.0–5.19, 6.0–6.12
lkddb pci 1014 0623 .... .... ...... : CONFIG_CXL CONFIG_CXL_BASE : drivers/misc/cxl/pci.c # in 4.12–4.20, 5.0–5.19, 6.0–6.12
lkddb pci 1014 0628 .... .... ...... : CONFIG_CXL CONFIG_CXL_BASE : drivers/misc/cxl/pci.c # in 4.12–4.20, 5.0–5.19, 6.0–6.12
lkddb platform "cxl_of" : CONFIG_CXL CONFIG_CXL_BASE CONFIG_PPC_PSERIES : drivers/misc/cxl/of.c # in 4.6–4.20, 5.0–5.19, 6.0–6.12
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Automatically generated (in year 2024). See also LKDDb sources on GitLab