| Message ID | 20180417020950.21446-8-alastair@au1.ibm.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | ocxl: Implement Power9 as_notify/wait for OpenCAPI | expand |
On 17/04/18 12:09, Alastair D'Silva wrote: > From: Alastair D'Silva <alastair@d-silva.org> > > Signed-off-by: Alastair D'Silva <alastair@d-silva.org> > --- > Documentation/accelerators/ocxl.rst | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/Documentation/accelerators/ocxl.rst b/Documentation/accelerators/ocxl.rst > index ddcc58d01cfb..144595a80a1c 100644 > --- a/Documentation/accelerators/ocxl.rst > +++ b/Documentation/accelerators/ocxl.rst > @@ -157,6 +157,16 @@ OCXL_IOCTL_GET_METADATA: > Obtains configuration information from the card, such at the size of > MMIO areas, the AFU version, and the PASID for the current context. > > +OCXL_IOCTL_ENABLE_P9_WAIT: > + > + Allows the AFU to wake a userspace thread executing 'wait'. Returns > + information to userspace to allow it to configure the AFU. Note that this is only available on POWER9. > + > +OCXL_IOCTL_GET_PLATFORM: > + > + Notifies userspace as to the platform the kernel believes we are on, > + which may differ from what userspace believes. Also reports on which CPU > + features which are usable from userspace. The first sentence here doesn't seem to relate to anything that GET_PLATFORM actually does - afaict you're just passing flags which I suppose imply what the correct platform is, but really they're just feature flags?
diff --git a/Documentation/accelerators/ocxl.rst b/Documentation/accelerators/ocxl.rst index ddcc58d01cfb..144595a80a1c 100644 --- a/Documentation/accelerators/ocxl.rst +++ b/Documentation/accelerators/ocxl.rst @@ -157,6 +157,16 @@ OCXL_IOCTL_GET_METADATA: Obtains configuration information from the card, such at the size of MMIO areas, the AFU version, and the PASID for the current context. +OCXL_IOCTL_ENABLE_P9_WAIT: + + Allows the AFU to wake a userspace thread executing 'wait'. Returns + information to userspace to allow it to configure the AFU. + +OCXL_IOCTL_GET_PLATFORM: + + Notifies userspace as to the platform the kernel believes we are on, + which may differ from what userspace believes. Also reports on which CPU + features which are usable from userspace. mmap ----