1 // SPDX-License-Identifier: GPL-2.0-or-later
137 		numa_cpu_lookup_table[cpu] = -1;  in reset_numa_cpu_lookup_table()
219 		entry = &associativity[be32_to_cpu(distance_ref_points[i]) - 1];  in initialize_distance_lookup_table()
225  * Returns nid in the range [0..nr_node_ids], or -1 if no useful NUMA
255  * or -1 if not found.
276 		if (nid != -1)  in of_node_to_nid()
295 		root = of_find_node_by_path("/rtas");  in find_min_common_depth()
300 	 * This property is a set of 32-bit integers, each representing  in find_min_common_depth()
312 					"ibm,associativity-reference-points",  in find_min_common_depth()
316 		dbg("NUMA: ibm,associativity-reference-points not found.\n");  in find_min_common_depth()
333 				"short ibm,associativity-reference-points\n");  in find_min_common_depth()
355 	return -1;  in find_min_common_depth()
375 	while (n--) {  in read_n_cells()
390  * memory from the ibm,associativity-lookup-arrays property of the
393  * The layout of the ibm,associativity-lookup-arrays property is a number N
394  * indicating the number of associativity arrays, followed by a number M
395  * indicating the size of each associativity array, followed by a list
404 	memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");  in of_get_assoc_arrays()
406 		return -1;  in of_get_assoc_arrays()
408 	prop = of_get_property(memory, "ibm,associativity-lookup-arrays", &len);  in of_get_assoc_arrays()
411 		return -1;  in of_get_assoc_arrays()
414 	aa->n_arrays = of_read_number(prop++, 1);  in of_get_assoc_arrays()
415 	aa->array_sz = of_read_number(prop++, 1);  in of_get_assoc_arrays()
422 	if (len < (aa->n_arrays * aa->array_sz + 2) * sizeof(unsigned int))  in of_get_assoc_arrays()
423 		return -1;  in of_get_assoc_arrays()
425 	aa->arrays = prop;  in of_get_assoc_arrays()
431  * ibm,dynamic-reconfiguration-memory node.
448 	    !(lmb->flags & DRCONF_MEM_AI_INVALID) && lmb->aa_index < aa.n_arrays) {  in of_drconf_to_nid_single()
449 		index = lmb->aa_index * aa.array_sz + min_common_depth - 1;  in of_drconf_to_nid_single()
456 			index = lmb->aa_index * aa.array_sz;  in of_drconf_to_nid_single()
502  * Return the id of the domain used.
516 	 * If a valid cpu-to-node mapping is already available, use it  in numa_setup_cpu()
518 	 * the most recent mapping notified to us by the platform (eg: VPHN).  in numa_setup_cpu()
520 	 * core. If a valid cpu-to-node mapping is already available, for  in numa_setup_cpu()
631 	return memblock_end_of_DRAM() - start;  in numa_enforce_memory_limit()
636  * linux,drconf-usable-memory property
641 	 * For each lmb in ibm,dynamic-memory a corresponding  in read_usm_ranges()
642 	 * entry in linux,drconf-usable-memory property contains  in read_usm_ranges()
643 	 * a counter followed by that many (base, size) duple.  in read_usm_ranges()
644 	 * read the counter from linux,drconf-usable-memory  in read_usm_ranges()
650  * Extract NUMA information from the ibm,dynamic-reconfiguration-memory
665 	if ((lmb->flags & DRCONF_MEM_RESERVED)  in numa_setup_drmem_lmb()
666 	    || !(lmb->flags & DRCONF_MEM_ASSIGNED))  in numa_setup_drmem_lmb()
672 	base = lmb->base_addr;  in numa_setup_drmem_lmb()
695 	} while (--ranges);  in numa_setup_drmem_lmb()
707 		printk(KERN_WARNING "NUMA disabled by user\n");  in parse_numa_properties()
708 		return -1;  in parse_numa_properties()
734 		 * Don't fall back to default_nid yet -- we will plug  in parse_numa_properties()
759 			"linux,usable-memory", &len);  in parse_numa_properties()
768 		/* these are order-sensitive, and modify the buffer pointer */  in parse_numa_properties()
788 		if (--ranges)  in parse_numa_properties()
794 	 * ibm,dynamic-memory property in the  in parse_numa_properties()
795 	 * ibm,dynamic-reconfiguration-memory node.  in parse_numa_properties()
797 	memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");  in parse_numa_properties()
817 	       (top_of_ram - total_ram) >> 20);  in setup_nonnuma()
822 				  PFN_PHYS(end_pfn - start_pfn),  in setup_nonnuma()
841 		 * If we used a CPU iterator here we would miss printing  in dump_numa_cpu_topology()
852 					pr_cont("-%u", cpu - 1);  in dump_numa_cpu_topology()
858 			pr_cont("-%u", nr_cpu_ids - 1);  in dump_numa_cpu_topology()
866 	u64 spanned_pages = end_pfn - start_pfn;  in setup_node_data()
880 	pr_info("  NODE_DATA [mem %#010Lx-%#010Lx]\n",  in setup_node_data()
881 		nd_pa, nd_pa + nd_size - 1);  in setup_node_data()
888 	NODE_DATA(nid)->node_id = nid;  in setup_node_data()
889 	NODE_DATA(nid)->node_start_pfn = start_pfn;  in setup_node_data()
890 	NODE_DATA(nid)->node_spanned_pages = spanned_pages;  in setup_node_data()
895 	struct device_node *rtas;  in find_possible_nodes()  local
903 	rtas = of_find_node_by_path("/rtas");  in find_possible_nodes()
904 	if (!rtas)  in find_possible_nodes()
908 	 * ibm,current-associativity-domains is a fairly recent property. If  in find_possible_nodes()
909 	 * it doesn't exist, then fallback on ibm,max-associativity-domains.  in find_possible_nodes()
913 	domains = of_get_property(rtas, "ibm,current-associativity-domains",  in find_possible_nodes()
916 		domains = of_get_property(rtas, "ibm,max-associativity-domains",  in find_possible_nodes()
933 	of_node_put(rtas);  in find_possible_nodes()
969 		 * Powerpc with CONFIG_NUMA always used to have a node 0,  in mem_topology_setup()
1002 	 * _nocalls() + manual invocation is used because cpuhp is not yet  in initmem_init()
1031  * memory represented in the device tree by the property
1032  * ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory.
1045 		if ((lmb->flags & DRCONF_MEM_RESERVED)  in hot_add_drconf_scn_to_nid()
1046 		    || !(lmb->flags & DRCONF_MEM_ASSIGNED))  in hot_add_drconf_scn_to_nid()
1049 		if ((scn_addr < lmb->base_addr)  in hot_add_drconf_scn_to_nid()
1050 		    || (scn_addr >= (lmb->base_addr + lmb_size)))  in hot_add_drconf_scn_to_nid()
1083 		while (ranges--) {  in hot_add_node_scn_to_nid()
1116 	memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");  in hot_add_scn_to_nid()
1136 	dn = of_find_node_by_path("/rtas");  in hot_add_drconf_memory_max()
1138 		lrdr = of_get_property(dn, "ibm,lrdr-capacity", NULL);  in hot_add_drconf_memory_max()
1144 	memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");  in hot_add_drconf_memory_max()
1153  * memory_hotplug_max - return max address of memory that may be added
1155  * This is currently only used on systems that support drconfig memory
1233 		 * to deal with more memoryless-node error conditions.  in find_and_online_cpu_nid()
1250 		return -1;  in cpu_to_coregroup_id()
1263 		return of_read_number(&associativity[index - 1], 1);  in cpu_to_coregroup_id()