CONFIG_OCXL: OpenCAPI coherent accelerator support

General informations

The Linux kernel configuration item CONFIG_OCXL:

• prompt: OpenCAPI coherent accelerator support
• type: tristate
• depends on: CONFIG_HOTPLUG_PCI_POWERNV
• defined in drivers/misc/ocxl/Kconfig
• found in Linux kernels: 4.16–4.20, 5.0–5.19, 6.0–6.12
• modules built: ocxl, ocxl_hw

Help text

Select this option to enable the ocxl driver for Open Coherent Accelerator Processor Interface (OpenCAPI) devices.

OpenCAPI allows FPGA and ASIC accelerators to be coherently attached to a CPU over an OpenCAPI link.

The ocxl driver enables userspace programs to access these accelerators through devices in /dev/ocxl/.

For more information, see https://opencapi.org.

This is not to be confused with the support for IBM CAPI accelerators (CXL), which are PCI-based instead of a dedicated OpenCAPI link, and don't follow the same protocol.

If unsure, say N.

Hardware

PCI

Numeric ID (from LKDDb) and names (from pci.ids) of recognized devices:

• vendor: 1014 ("IBM"), device: 062b

LKDDb

Raw data from LKDDb:

• lkddb fs "ocxlflash" : CONFIG_CXLFLASH CONFIG_OCXL : drivers/scsi/cxlflash/ocxl_hw.c # in 4.19–4.20, 5.0–5.19, 6.0–6.12
• lkddb fs "ocxlflash" : CONFIG_CXLFLASH CONFIG_OCXL CONFIG_SCSI : drivers/scsi/cxlflash/ocxl_hw.c # in 4.18
• lkddb module ocxl CONFIG_OCXL : drivers/misc/ocxl/Kconfig : "OpenCAPI coherent accelerator support" # in 4.16–4.17
• lkddb module ocxl_hw CONFIG_OCXL : drivers/misc/ocxl/Kconfig : "OpenCAPI coherent accelerator support" # in 4.18–4.20, 5.0–5.19, 6.0–6.12
• lkddb pci 1014 062b .... .... ...... : CONFIG_OCXL : drivers/misc/ocxl/pci.c # in 4.16–4.20, 5.0–5.19, 6.0–6.12

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)
• The Linux PCI ID Repository.

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