diff options
Diffstat (limited to 'drivers/cxl/cxl.h')
| -rw-r--r-- | drivers/cxl/cxl.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index 89fbf49ebf98..de4fbe7cbf42 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -262,8 +262,10 @@ struct cxl_nvdimm { * @uport: PCI or platform device implementing the upstream port capability * @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 * @decoder_ida: allocator for decoder ids * @component_reg_phys: component register capability base address (optional) + * @dead: last ep has been removed, force port re-creation * @depth: How deep this port is relative to the root. depth 0 is the root. */ struct cxl_port { @@ -271,8 +273,10 @@ struct cxl_port { struct device *uport; int id; struct list_head dports; + struct list_head endpoints; struct ida decoder_ida; resource_size_t component_reg_phys; + bool dead; unsigned int depth; }; @@ -292,6 +296,16 @@ struct cxl_dport { struct list_head list; }; +/** + * struct cxl_ep - track an endpoint's interest in a port + * @ep: device that hosts a generic CXL endpoint (expander or accelerator) + * @list: node on port->endpoints list + */ +struct cxl_ep { + struct device *ep; + struct list_head list; +}; + /* * 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 @@ -313,9 +327,14 @@ struct cxl_port *devm_cxl_add_port(struct device *host, struct device *uport, resource_size_t component_reg_phys, struct cxl_port *parent_port); struct cxl_port *find_cxl_root(struct device *dev); +int devm_cxl_enumerate_ports(struct cxl_memdev *cxlmd); + struct cxl_dport *devm_cxl_add_dport(struct cxl_port *port, struct device *dport, int port_id, resource_size_t component_reg_phys); +struct cxl_dport *cxl_find_dport_by_dev(struct cxl_port *port, + const struct device *dev); + struct cxl_decoder *to_cxl_decoder(struct device *dev); bool is_root_decoder(struct device *dev); bool is_cxl_decoder(struct device *dev); |