diff options
Diffstat (limited to 'drivers/cxl/cxl.h')
| -rw-r--r-- | drivers/cxl/cxl.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index 8f39cfb0d972..549fde973c62 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -421,6 +421,7 @@ struct cxl_nvdimm { * @id: id for port device-name * @dports: cxl_dport instances referenced by decoders * @endpoints: cxl_ep instances, endpoints that are a descendant of this port + * @regions: cxl_region_ref instances, regions mapped by this port * @parent_dport: dport that points to this port in the parent * @decoder_ida: allocator for decoder ids * @hdm_end: track last allocated HDM decoder instance for allocation ordering @@ -437,6 +438,7 @@ struct cxl_port { int id; struct xarray dports; struct xarray endpoints; + struct xarray regions; struct cxl_dport *parent_dport; struct ida decoder_ida; int hdm_end; @@ -483,6 +485,24 @@ struct cxl_ep { struct cxl_port *next; }; +/** + * struct cxl_region_ref - track a region's interest in a port + * @port: point in topology to install this reference + * @decoder: decoder assigned for @region in @port + * @region: region for this reference + * @endpoints: cxl_ep references for region members beneath @port + * @nr_eps: number of endpoints beneath @port + * @nr_targets: number of distinct targets needed to reach @nr_eps + */ +struct cxl_region_ref { + struct cxl_port *port; + struct cxl_decoder *decoder; + struct cxl_region *region; + struct xarray endpoints; + int nr_eps; + int nr_targets; +}; + /* * The platform firmware device hosting the root is also the top of the * CXL port topology. All other CXL ports have another CXL port as their |