154 		struct cxl_dport *dport = cxlsd->target[i];  in emit_target_list()  local
157 		if (!dport)  in emit_target_list()
162 		rc = sysfs_emit_at(buf, offset, "%d%s", dport->port_id,  in emit_target_list()
778 static int cxl_dport_setup_regs(struct device *host, struct cxl_dport *dport,  in cxl_dport_setup_regs()  argument
783 	if (dev_is_platform(dport->dport_dev))  in cxl_dport_setup_regs()
787 	 * use @dport->dport_dev for the context for error messages during  in cxl_dport_setup_regs()
791 	rc = cxl_setup_comp_regs(dport->dport_dev, &dport->reg_map,  in cxl_dport_setup_regs()
793 	dport->reg_map.host = host;  in cxl_dport_setup_regs()
801 	struct cxl_dport *dport = data;  in cxl_einj_inject()  local
803 	if (dport->rch)  in cxl_einj_inject()
804 		return einj_cxl_inject_rch_error(dport->rcrb.base, type);  in cxl_einj_inject()
806 	return einj_cxl_inject_error(to_pci_dev(dport->dport_dev), type);  in cxl_einj_inject()
811 static void cxl_debugfs_create_dport_dir(struct cxl_dport *dport)  in cxl_debugfs_create_dport_dir()  argument
820 	 * EINJ expects a dport SBDF to be specified for 2.0 error injection.  in cxl_debugfs_create_dport_dir()
822 	if (!dport->rch && !dev_is_pci(dport->dport_dev))  in cxl_debugfs_create_dport_dir()
825 	dir = cxl_debugfs_create_dir(dev_name(dport->dport_dev));  in cxl_debugfs_create_dport_dir()
827 	debugfs_create_file("einj_inject", 0200, dir, dport,  in cxl_debugfs_create_dport_dir()
1043 	struct cxl_dport *dport;  in find_dport()  local
1047 	xa_for_each(&port->dports, index, dport)  in find_dport()
1048 		if (dport->port_id == id)  in find_dport()
1049 			return dport;  in find_dport()
1053 static int add_dport(struct cxl_port *port, struct cxl_dport *dport)  in add_dport()  argument
1059 	dup = find_dport(port, dport->port_id);  in add_dport()
1062 			"unable to add dport%d-%s non-unique port id (%s)\n",  in add_dport()
1063 			dport->port_id, dev_name(dport->dport_dev),  in add_dport()
1068 	rc = xa_insert(&port->dports, (unsigned long)dport->dport_dev, dport,  in add_dport()
1080  * dport add/remove. Instead, root dports are manually added by a
1098 	struct cxl_dport *dport = data;  in cxl_dport_remove()  local
1099 	struct cxl_port *port = dport->port;  in cxl_dport_remove()
1101 	xa_erase(&port->dports, (unsigned long) dport->dport_dev);  in cxl_dport_remove()
1102 	put_device(dport->dport_dev);  in cxl_dport_remove()
1107 	struct cxl_dport *dport = data;  in cxl_dport_unlink()  local
1108 	struct cxl_port *port = dport->port;  in cxl_dport_unlink()
1111 	sprintf(link_name, "dport%d", dport->port_id);  in cxl_dport_unlink()
1121 	struct cxl_dport *dport;  in __devm_cxl_add_dport()  local
1131 		dev_WARN_ONCE(&port->dev, 1, "dport:%s bad devm context\n",  in __devm_cxl_add_dport()
1136 	if (snprintf(link_name, CXL_TARGET_STRLEN, "dport%d", port_id) >=  in __devm_cxl_add_dport()
1140 	dport = devm_kzalloc(host, sizeof(*dport), GFP_KERNEL);  in __devm_cxl_add_dport()
1141 	if (!dport)  in __devm_cxl_add_dport()
1144 	dport->dport_dev = dport_dev;  in __devm_cxl_add_dport()
1145 	dport->port_id = port_id;  in __devm_cxl_add_dport()
1146 	dport->port = port;  in __devm_cxl_add_dport()
1149 		rc = cxl_dport_setup_regs(&port->dev, dport,  in __devm_cxl_add_dport()
1154 		dport->rcrb.base = rcrb;  in __devm_cxl_add_dport()
1155 		component_reg_phys = __rcrb_to_component(dport_dev, &dport->rcrb,  in __devm_cxl_add_dport()
1163 		 * RCH @dport is not ready to map until associated with its  in __devm_cxl_add_dport()
1166 		rc = cxl_dport_setup_regs(NULL, dport, component_reg_phys);  in __devm_cxl_add_dport()
1170 		dport->rch = true;  in __devm_cxl_add_dport()
1174 		dev_dbg(dport_dev, "Component Registers found for dport: %pa\n",  in __devm_cxl_add_dport()
1178 	rc = add_dport(port, dport);  in __devm_cxl_add_dport()
1184 	rc = devm_add_action_or_reset(host, cxl_dport_remove, dport);  in __devm_cxl_add_dport()
1192 	rc = devm_add_action_or_reset(host, cxl_dport_unlink, dport);  in __devm_cxl_add_dport()
1197 		dport->link_latency = cxl_pci_get_latency(to_pci_dev(dport_dev));  in __devm_cxl_add_dport()
1199 	cxl_debugfs_create_dport_dir(dport);  in __devm_cxl_add_dport()
1201 	return dport;  in __devm_cxl_add_dport()
1206  * @port: the cxl_port that references this dport
1207  * @dport_dev: firmware or PCI device representing the dport
1208  * @port_id: identifier for this dport in a decoder's target list
1219 	struct cxl_dport *dport;  in devm_cxl_add_dport()  local
1221 	dport = __devm_cxl_add_dport(port, dport_dev, port_id,  in devm_cxl_add_dport()
1223 	if (IS_ERR(dport)) {  in devm_cxl_add_dport()
1224 		dev_dbg(dport_dev, "failed to add dport to %s: %ld\n",  in devm_cxl_add_dport()
1225 			dev_name(&port->dev), PTR_ERR(dport));  in devm_cxl_add_dport()
1227 		dev_dbg(dport_dev, "dport added to %s\n",  in devm_cxl_add_dport()
1231 	return dport;  in devm_cxl_add_dport()
1237  * @port: the cxl_port that references this dport
1238  * @dport_dev: firmware or PCI device representing the dport
1239  * @port_id: identifier for this dport in a decoder's target list
1248 	struct cxl_dport *dport;  in devm_cxl_add_rch_dport()  local
1251 		dev_dbg(&port->dev, "failed to add RCH dport, missing RCRB\n");  in devm_cxl_add_rch_dport()
1255 	dport = __devm_cxl_add_dport(port, dport_dev, port_id,  in devm_cxl_add_rch_dport()
1257 	if (IS_ERR(dport)) {  in devm_cxl_add_rch_dport()
1258 		dev_dbg(dport_dev, "failed to add RCH dport to %s: %ld\n",  in devm_cxl_add_rch_dport()
1259 			dev_name(&port->dev), PTR_ERR(dport));  in devm_cxl_add_rch_dport()
1261 		dev_dbg(dport_dev, "RCH dport added to %s\n",  in devm_cxl_add_rch_dport()
1265 	return dport;  in devm_cxl_add_rch_dport()
1271 	struct cxl_port *port = new->dport->port;  in add_ep()
1283  * @dport: the dport that routes to @ep_dev
1290 static int cxl_add_ep(struct cxl_dport *dport, struct device *ep_dev)  in cxl_add_ep()  argument
1300 	ep->dport = dport;  in cxl_add_ep()
1311 	struct cxl_dport **dport;  member
1317 	struct cxl_dport *dport;  in match_port_by_dport()  local
1326 	dport = cxl_find_dport_by_dev(port, ctx->dport_dev);  in match_port_by_dport()
1327 	if (ctx->dport)  in match_port_by_dport()
1328 		*ctx->dport = dport;  in match_port_by_dport()
1329 	return dport != NULL;  in match_port_by_dport()
1346 				      struct cxl_dport **dport)  in find_cxl_port()  argument
1350 		.dport = dport,  in find_cxl_port()
1360 					 struct cxl_dport **dport)  in find_cxl_port_at()  argument
1365 		.dport = dport,  in find_cxl_port_at()
1444 	struct cxl_dport *dport;  in reap_dports()  local
1449 	xa_for_each(&port->dports, index, dport) {  in reap_dports()
1450 		devm_release_action(&port->dev, cxl_dport_unlink, dport);  in reap_dports()
1451 		devm_release_action(&port->dev, cxl_dport_remove, dport);  in reap_dports()
1452 		devm_kfree(&port->dev, dport);  in reap_dports()
1547 	struct cxl_dport *dport, *parent_dport;  in add_port_attach_ep()  local
1557 		dev_dbg(&cxlmd->dev, "%s is a root dport\n",  in add_port_attach_ep()
1582 		port = find_cxl_port_at(parent_port, dport_dev, &dport);  in add_port_attach_ep()
1590 			/* retry find to pick up the new dport information */  in add_port_attach_ep()
1591 			port = find_cxl_port_at(parent_port, dport_dev, &dport);  in add_port_attach_ep()
1599 	rc = cxl_add_ep(dport, &cxlmd->dev);  in add_port_attach_ep()
1637 		struct cxl_dport *dport;  in devm_cxl_enumerate_ports()  local
1648 			dev_warn(dev, "at %s no parent for dport: %s\n",  in devm_cxl_enumerate_ports()
1657 			find_cxl_port(dport_dev, &dport);  in devm_cxl_enumerate_ports()
1663 			rc = cxl_add_ep(dport, &cxlmd->dev);  in devm_cxl_enumerate_ports()
1698 				   struct cxl_dport **dport)  in cxl_pci_find_port()  argument
1700 	return find_cxl_port(pdev->dev.parent, dport);  in cxl_pci_find_port()
1705 				   struct cxl_dport **dport)  in cxl_mem_find_port()  argument
1707 	return find_cxl_port(grandparent(&cxlmd->dev), dport);  in cxl_mem_find_port()
1726 		struct cxl_dport *dport = find_dport(port, target_map[i]);  in decoder_populate_targets()  local
1728 		if (!dport)  in decoder_populate_targets()
1730 		cxlsd->target[i] = dport;  in decoder_populate_targets()
2184 	struct cxl_dport *dport;  in cxl_endpoint_get_perf_coordinates()  local
2207 		dport = iter->parent_dport;  in cxl_endpoint_get_perf_coordinates()
2216 			if (!coordinates_valid(dport->coord))  in cxl_endpoint_get_perf_coordinates()
2218 			cxl_coordinates_combine(c, c, dport->coord);  in cxl_endpoint_get_perf_coordinates()
2220 		add_latency(c, dport->link_latency);  in cxl_endpoint_get_perf_coordinates()
2223 	dport = iter->parent_dport;  in cxl_endpoint_get_perf_coordinates()
2225 	if (!coordinates_valid(dport->coord))  in cxl_endpoint_get_perf_coordinates()
2227 	cxl_coordinates_combine(c, c, dport->coord);  in cxl_endpoint_get_perf_coordinates()
2250 	struct cxl_dport *dport = port->parent_dport;  in cxl_port_get_switch_dport_bandwidth()  local
2256 	if (!coordinates_valid(dport->coord))  in cxl_port_get_switch_dport_bandwidth()
2260 		c[i].read_bandwidth = dport->coord[i].read_bandwidth;  in cxl_port_get_switch_dport_bandwidth()
2261 		c[i].write_bandwidth = dport->coord[i].write_bandwidth;  in cxl_port_get_switch_dport_bandwidth()