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The PCI hotplug framework is used to update the devices when a new image is written to the FPGA. Reviewed-by: Alastair D'Silva <alastair@d-silva.org> Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20191121134918.7155-12-fbarrat@linux.ibm.com
33 lines
909 B
Plaintext
33 lines
909 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Open Coherent Accelerator (OCXL) compatible devices
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#
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config OCXL_BASE
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bool
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select PPC_COPRO_BASE
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config OCXL
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tristate "OpenCAPI coherent accelerator support"
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depends on PPC_POWERNV && PCI && EEH
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select OCXL_BASE
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select HOTPLUG_PCI_POWERNV
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default m
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help
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Select this option to enable the ocxl driver for Open
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Coherent Accelerator Processor Interface (OpenCAPI) devices.
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OpenCAPI allows FPGA and ASIC accelerators to be coherently
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attached to a CPU over an OpenCAPI link.
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The ocxl driver enables userspace programs to access these
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accelerators through devices in /dev/ocxl/.
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For more information, see http://opencapi.org.
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This is not to be confused with the support for IBM CAPI
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accelerators (CONFIG_CXL), which are PCI-based instead of a
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dedicated OpenCAPI link, and don't follow the same protocol.
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If unsure, say N.
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