ocxl: Add AFU interrupt support

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Add user APIs through ioctl to allocate, free, and be notified of an
AFU interrupt.

For opencapi, an AFU can trigger an interrupt on the host by sending a
specific command targeting a 64-bit object handle. On POWER9, this is
implemented by mapping a special page in the address space of a
process and a write to that page will trigger an interrupt.

Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Frederic Barrat 2018-01-23 12:31:42 +01:00 • committed by Michael Ellerman

parent 5ef3166e8a

commit aeddad1760

8 changed files with 357 additions and 2 deletions

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include/uapi/misc/ocxl.h

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