Vaibhav Jain <vaib...@linux.ibm.com> writes: > Add documentation to 'papr_hcalls.rst' describing the bitmap flags > that are returned from H_SCM_HEALTH hcall as per the PAPR-SCM > specification. > > Cc: Dan Williams <dan.j.willi...@intel.com> > Cc: Michael Ellerman <m...@ellerman.id.au> > Cc: "Aneesh Kumar K . V" <aneesh.ku...@linux.ibm.com> > Signed-off-by: Vaibhav Jain <vaib...@linux.ibm.com> > --- > Changelog: > > v5..v6 > * New patch in the series > --- > Documentation/powerpc/papr_hcalls.rst | 43 ++++++++++++++++++++++++--- > 1 file changed, 39 insertions(+), 4 deletions(-) > > diff --git a/Documentation/powerpc/papr_hcalls.rst > b/Documentation/powerpc/papr_hcalls.rst > index 3493631a60f8..9a5ba5eaf323 100644 > --- a/Documentation/powerpc/papr_hcalls.rst > +++ b/Documentation/powerpc/papr_hcalls.rst > @@ -220,13 +220,48 @@ from the LPAR memory. > **H_SCM_HEALTH** > > | Input: drcIndex > -| Out: *health-bitmap, health-bit-valid-bitmap* > +| Out: *health-bitmap (r4), health-bit-valid-bitmap (r5)* > | Return Value: *H_Success, H_Parameter, H_Hardware* > > Given a DRC Index return the info on predictive failure and overall health of > -the NVDIMM. The asserted bits in the health-bitmap indicate a single > predictive > -failure and health-bit-valid-bitmap indicate which bits in health-bitmap are > -valid. > +the NVDIMM. The asserted bits in the health-bitmap indicate one or more > states > +(described in table below) of the NVDIMM and health-bit-valid-bitmap indicate > +which bits in health-bitmap are valid. > + > +Health Bitmap Flags: > + > ++------+-----------------------------------------------------------------------+ > +| Bit | Definition > | > ++======+=======================================================================+ > +| 00 | SCM device is unable to persist memory contents. > | > +| | If the system is powered down, nothing will be saved. > | > ++------+-----------------------------------------------------------------------+
Are these correct bit numbers or backward IBM big endian bit numbers? ie. which bit is LSB? cheers
