Vaibhav Jain <[email protected]> writes: > Introduce support for PAPR NVDIMM Specific Methods (PDSM) in papr_scm > module and add the command family to the white list of NVDIMM command > sets. Also advertise support for ND_CMD_CALL for the nvdimm > command mask and implement necessary scaffolding in the module to > handle ND_CMD_CALL ioctl and PDSM requests that we receive. > > The layout of the PDSM request as we expect from libnvdimm/libndctl is > described in newly introduced uapi header 'papr_scm_pdsm.h' which > defines a new 'struct nd_pdsm_cmd_pkg' header. This header is used > to communicate the PDSM request via member > 'nd_pkg_papr_scm->nd_command' and size of payload that need to be > sent/received for servicing the PDSM. > > A new function is_cmd_valid() is implemented that reads the args to > papr_scm_ndctl() and performs sanity tests on them. A new function > papr_scm_service_pdsm() is introduced and is called from > papr_scm_ndctl() in case of a PDSM request is received via ND_CMD_CALL > command from libnvdimm. >
Reviewed-by: Aneesh Kumar K.V <[email protected]> > Cc: "Aneesh Kumar K . V" <[email protected]> > Cc: Dan Williams <[email protected]> > Cc: Michael Ellerman <[email protected]> > Cc: Ira Weiny <[email protected]> > Signed-off-by: Vaibhav Jain <[email protected]> > --- -aneesh
