Alison Schofield wrote:
> On Mon, Nov 04, 2024 at 08:10:48PM -0600, Ira Weiny wrote:
> > From: Navneet Singh <[email protected]>
> >
> > CXL Dynamic Capacity Devices (DCDs) optionally support dynamic capacity
> > with up to eight partitions (Regions) (dc0-dc7). CXL regions can now be
> > spare and defined as dynamic capacity (dc).
> >
> > Add support for DCD devices. Query for DCD capabilities. Add the
> > ability to add DC partitions to a CXL DC region.
> >
> > Signed-off-by: Navneet Singh <[email protected]>
> > Co-authored-by: Sushant1 Kumar <[email protected]>
> > Signed-off-by: Sushant1 Kumar <[email protected]>
> > Co-authored-by: Ira Weiny <[email protected]>
> > Signed-off-by: Ira Weiny <[email protected]>
> >
> > ---
> > Changes:
> > [Fan: Properly initialize index]
> > ---
> > cxl/json.c | 26 +++++++++++++++
> > cxl/lib/libcxl.c | 95
> > +++++++++++++++++++++++++++++++++++++++++++++++++++++-
> > cxl/lib/libcxl.sym | 3 ++
> > cxl/lib/private.h | 6 +++-
> > cxl/libcxl.h | 55 +++++++++++++++++++++++++++++--
> > cxl/memdev.c | 7 +++-
> > cxl/region.c | 49 ++++++++++++++++++++++++++--
> > 7 files changed, 234 insertions(+), 7 deletions(-)
> >
> > diff --git a/cxl/json.c b/cxl/json.c
> > index
> > dcd3cc28393faf7e8adf299a857531ecdeaac50a..915b2716a524fa8929ed34b01a7cb6590b61d4b7
> > 100644
> > --- a/cxl/json.c
> > +++ b/cxl/json.c
> > @@ -754,10 +754,12 @@ err_free:
> > return jpoison;
> > }
> >
> > +#define DC_SIZE_NAME_LEN 64
> > struct json_object *util_cxl_memdev_to_json(struct cxl_memdev *memdev,
> > unsigned long flags)
> > {
> > const char *devname = cxl_memdev_get_devname(memdev);
> > + char size_name[DC_SIZE_NAME_LEN];
> > struct json_object *jdev, *jobj;
> > unsigned long long serial, size;
> > const char *fw_version;
> > @@ -800,6 +802,17 @@ struct json_object *util_cxl_memdev_to_json(struct
> > cxl_memdev *memdev,
> > }
> > }
> >
> > + for (int index = 0; index < MAX_NUM_DC_REGIONS; index++) {
> > + size = cxl_memdev_get_dc_size(memdev, index);
> > + if (size) {
> > + jobj = util_json_object_size(size, flags);
> > + if (jobj) {
> > + sprintf(size_name, "dc%d_size", index);
> > + json_object_object_add(jdev,
> > + size_name, jobj);
> > + }
> > + }
> > + }
>
> how about reducing above indentation -
>
> if (!size)
> continue;
> jobj = util_json_object_size(size, flags);
> if (!jobj)
> continue;
> sprintf(size_name, "dc%d_size", index);
> json_object_object_add(jdev, size_name, jobj);
>
ok yea that works.
>
>
>
> > if (flags & UTIL_JSON_HEALTH) {
> > jobj = util_cxl_memdev_health_to_json(memdev, flags);
> > if (jobj)
> > @@ -948,11 +961,13 @@ struct json_object *util_cxl_bus_to_json(struct
> > cxl_bus *bus,
> > return jbus;
> > }
> >
> > +#define DC_CAPABILITY_NAME_LEN 16
> > struct json_object *util_cxl_decoder_to_json(struct cxl_decoder *decoder,
> > unsigned long flags)
> > {
> > const char *devname = cxl_decoder_get_devname(decoder);
> > struct cxl_port *port = cxl_decoder_get_port(decoder);
> > + char dc_capable_name[DC_CAPABILITY_NAME_LEN];
> > struct json_object *jdecoder, *jobj;
> > struct cxl_region *region;
> > u64 val, size;
> > @@ -1059,6 +1074,17 @@ struct json_object *util_cxl_decoder_to_json(struct
> > cxl_decoder *decoder,
> > json_object_object_add(
> > jdecoder, "volatile_capable", jobj);
> > }
> > + for (int index = 0; index < MAX_NUM_DC_REGIONS; index++) {
> > + if (cxl_decoder_is_dc_capable(decoder, index)) {
> > + jobj = json_object_new_boolean(true);
> > + if (jobj) {
> > + sprintf(dc_capable_name,
> > "dc%d_capable", index);
> > + json_object_object_add(jdecoder,
> > + dc_capable_name,
> > + jobj);
> > + }
> > + }
>
> and similar above.
done.
Thanks,
Ira
>
>
> snip
>
>
