| Message ID | 162854809945.1980150.460559852452554553.stgit@dwillia2-desk3.amr.corp.intel.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | cxl_test: Enable CXL Topology and UAPI regression tests | expand |
On Mon, 9 Aug 2021 15:28:19 -0700 Dan Williams <dan.j.williams@intel.com> wrote: > In preparation for LIBNVDIMM to manage labels on CXL devices deploy > helpers that abstract the label type from the implementation. The CXL > label format is mostly similar to the EFI label format with concepts / > fields added, like dynamic region creation and label type guids, and > other concepts removed like BLK-mode and interleave-set-cookie ids. > > Finish off the BLK-mode specific helper conversion with the nlabel and > position behaviour that is specific to EFI v1.2 labels and not the > original v1.1 definition. > > Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> > --- > drivers/nvdimm/label.c | 46 +++++++++++++++++++++++++++++----------------- > 1 file changed, 29 insertions(+), 17 deletions(-) > > diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c > index d1a7f399cfe4..7188675c0955 100644 > --- a/drivers/nvdimm/label.c > +++ b/drivers/nvdimm/label.c > @@ -898,6 +898,10 @@ static struct resource *to_resource(struct nvdimm_drvdata *ndd, > return NULL; > } > > +/* > + * Use the presence of the type_guid as a flag to determine isetcookie > + * usage and nlabel + position policy for blk-aperture namespaces. > + */ > static void nsl_set_blk_isetcookie(struct nvdimm_drvdata *ndd, > struct nd_namespace_label *nd_label, > u64 isetcookie) > @@ -925,6 +929,28 @@ bool nsl_validate_blk_isetcookie(struct nvdimm_drvdata *ndd, > return true; > } > > +static void nsl_set_blk_nlabel(struct nvdimm_drvdata *ndd, > + struct nd_namespace_label *nd_label, int nlabel, > + bool first) > +{ > + if (!namespace_label_has(ndd, type_guid)) { > + nsl_set_nlabel(ndd, nd_label, 0); /* N/A */ > + return; > + } > + nsl_set_nlabel(ndd, nd_label, first ? nlabel : 0xffff); > +} > + > +static void nsl_set_blk_position(struct nvdimm_drvdata *ndd, > + struct nd_namespace_label *nd_label, > + bool first) > +{ > + if (!namespace_label_has(ndd, type_guid)) { > + nsl_set_position(ndd, nd_label, 0); > + return; > + } > + nsl_set_position(ndd, nd_label, first ? 0 : 0xffff); > +} > + > /* > * 1/ Account all the labels that can be freed after this update > * 2/ Allocate and write the label to the staging (next) index > @@ -1056,23 +1082,9 @@ static int __blk_label_update(struct nd_region *nd_region, > nsl_set_name(ndd, nd_label, nsblk->alt_name); > nsl_set_flags(ndd, nd_label, NSLABEL_FLAG_LOCAL); > > - /* > - * Use the presence of the type_guid as a flag to > - * determine isetcookie usage and nlabel + position > - * policy for blk-aperture namespaces. > - */ > - if (namespace_label_has(ndd, type_guid)) { > - if (i == min_dpa_idx) { > - nsl_set_nlabel(ndd, nd_label, nsblk->num_resources); > - nsl_set_position(ndd, nd_label, 0); > - } else { > - nsl_set_nlabel(ndd, nd_label, 0xffff); > - nsl_set_position(ndd, nd_label, 0xffff); > - } > - } else { > - nsl_set_nlabel(ndd, nd_label, 0); /* N/A */ > - nsl_set_position(ndd, nd_label, 0); /* N/A */ > - } > + nsl_set_blk_nlabel(ndd, nd_label, nsblk->num_resources, > + i == min_dpa_idx); > + nsl_set_blk_position(ndd, nd_label, i == min_dpa_idx); > nsl_set_blk_isetcookie(ndd, nd_label, nd_set->cookie2); > > nsl_set_dpa(ndd, nd_label, res->start); >
diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c index d1a7f399cfe4..7188675c0955 100644 --- a/drivers/nvdimm/label.c +++ b/drivers/nvdimm/label.c @@ -898,6 +898,10 @@ static struct resource *to_resource(struct nvdimm_drvdata *ndd, return NULL; } +/* + * Use the presence of the type_guid as a flag to determine isetcookie + * usage and nlabel + position policy for blk-aperture namespaces. + */ static void nsl_set_blk_isetcookie(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u64 isetcookie) @@ -925,6 +929,28 @@ bool nsl_validate_blk_isetcookie(struct nvdimm_drvdata *ndd, return true; } +static void nsl_set_blk_nlabel(struct nvdimm_drvdata *ndd, + struct nd_namespace_label *nd_label, int nlabel, + bool first) +{ + if (!namespace_label_has(ndd, type_guid)) { + nsl_set_nlabel(ndd, nd_label, 0); /* N/A */ + return; + } + nsl_set_nlabel(ndd, nd_label, first ? nlabel : 0xffff); +} + +static void nsl_set_blk_position(struct nvdimm_drvdata *ndd, + struct nd_namespace_label *nd_label, + bool first) +{ + if (!namespace_label_has(ndd, type_guid)) { + nsl_set_position(ndd, nd_label, 0); + return; + } + nsl_set_position(ndd, nd_label, first ? 0 : 0xffff); +} + /* * 1/ Account all the labels that can be freed after this update * 2/ Allocate and write the label to the staging (next) index @@ -1056,23 +1082,9 @@ static int __blk_label_update(struct nd_region *nd_region, nsl_set_name(ndd, nd_label, nsblk->alt_name); nsl_set_flags(ndd, nd_label, NSLABEL_FLAG_LOCAL); - /* - * Use the presence of the type_guid as a flag to - * determine isetcookie usage and nlabel + position - * policy for blk-aperture namespaces. - */ - if (namespace_label_has(ndd, type_guid)) { - if (i == min_dpa_idx) { - nsl_set_nlabel(ndd, nd_label, nsblk->num_resources); - nsl_set_position(ndd, nd_label, 0); - } else { - nsl_set_nlabel(ndd, nd_label, 0xffff); - nsl_set_position(ndd, nd_label, 0xffff); - } - } else { - nsl_set_nlabel(ndd, nd_label, 0); /* N/A */ - nsl_set_position(ndd, nd_label, 0); /* N/A */ - } + nsl_set_blk_nlabel(ndd, nd_label, nsblk->num_resources, + i == min_dpa_idx); + nsl_set_blk_position(ndd, nd_label, i == min_dpa_idx); nsl_set_blk_isetcookie(ndd, nd_label, nd_set->cookie2); nsl_set_dpa(ndd, nd_label, res->start);
In preparation for LIBNVDIMM to manage labels on CXL devices deploy helpers that abstract the label type from the implementation. The CXL label format is mostly similar to the EFI label format with concepts / fields added, like dynamic region creation and label type guids, and other concepts removed like BLK-mode and interleave-set-cookie ids. Finish off the BLK-mode specific helper conversion with the nlabel and position behaviour that is specific to EFI v1.2 labels and not the original v1.1 definition. Signed-off-by: Dan Williams <dan.j.williams@intel.com> --- drivers/nvdimm/label.c | 46 +++++++++++++++++++++++++++++----------------- 1 file changed, 29 insertions(+), 17 deletions(-)