1 // SPDX-License-Identifier: GPL-2.0-or-later
63 	[0 ... MAX_NUMNODES - 1] = { [0 ... MAX_NUMNODES - 1] = -1 }
65 static int numa_id_index_table[MAX_NUMNODES] = { [0 ... MAX_NUMNODES - 1] = NUMA_NO_NODE };
141 		numa_cpu_lookup_table[cpu] = -1;  in reset_numa_cpu_lookup_table()
175 	int index = primary_domain_index  - 1;  in __associativity_to_nid()
188  * Returns nid in the range [0..nr_node_ids], or -1 if no useful NUMA
270  * or -1 if not found.
291 		if (nid != -1)  in of_node_to_nid()
314 			int index = be32_to_cpu(distance_ref_points[i]) - 1;  in __initialize_form1_numa_distance()
338  * Used to update distance information w.r.t newly added node.
366 	WARN(numa_distance_table[nid][nid] == -1,  in update_numa_distance()
372  * ibm,numa-lookup-index-table= {N, domainid1, domainid2, ..... domainidN}
373  * ibm,numa-distance-table = { N, 1, 2, 4, 5, 1, 6, .... N elements}
387 		root = of_find_node_by_path("/rtas");  in initialize_form2_numa_distance_lookup_table()
391 	numa_lookup_index = of_get_property(root, "ibm,numa-lookup-index-table", NULL);  in initialize_form2_numa_distance_lookup_table()
394 	/* first element of the array is the size and is encode-int */  in initialize_form2_numa_distance_lookup_table()
395 	form2_distances = of_get_property(root, "ibm,numa-distance-table", NULL);  in initialize_form2_numa_distance_lookup_table()
455 		root = of_find_node_by_path("/rtas");  in find_primary_domain_index()
460 	 * This property is a set of 32-bit integers, each representing  in find_primary_domain_index()
472 					"ibm,associativity-reference-points",  in find_primary_domain_index()
476 		pr_debug("ibm,associativity-reference-points not found.\n");  in find_primary_domain_index()
483 			pr_warn("short ibm,associativity-reference-points\n");  in find_primary_domain_index()
510 	return -1;  in find_primary_domain_index()
530 	while (n--) {  in read_n_cells()
545  * memory from the ibm,associativity-lookup-arrays property of the
548  * The layout of the ibm,associativity-lookup-arrays property is a number N
549  * indicating the number of associativity arrays, followed by a number M
550  * indicating the size of each associativity array, followed by a list
559 	memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");  in of_get_assoc_arrays()
561 		return -1;  in of_get_assoc_arrays()
563 	prop = of_get_property(memory, "ibm,associativity-lookup-arrays", &len);  in of_get_assoc_arrays()
566 		return -1;  in of_get_assoc_arrays()
569 	aa->n_arrays = of_read_number(prop++, 1);  in of_get_assoc_arrays()
570 	aa->array_sz = of_read_number(prop++, 1);  in of_get_assoc_arrays()
577 	if (len < (aa->n_arrays * aa->array_sz + 2) * sizeof(unsigned int))  in of_get_assoc_arrays()
578 		return -1;  in of_get_assoc_arrays()
580 	aa->arrays = prop;  in of_get_assoc_arrays()
599 	    !(lmb->flags & DRCONF_MEM_AI_INVALID) && lmb->aa_index < aa.n_arrays) {  in get_nid_and_numa_distance()
602 		index = lmb->aa_index * aa.array_sz;  in get_nid_and_numa_distance()
618  * ibm,dynamic-reconfiguration-memory node.
635 	    !(lmb->flags & DRCONF_MEM_AI_INVALID) && lmb->aa_index < aa.n_arrays) {  in of_drconf_to_nid_single()
638 		index = lmb->aa_index * aa.array_sz;  in of_drconf_to_nid_single()
671 	return -1;  in __vphn_get_associativity()
689 	return -1;  in __vphn_get_associativity()
700  * Return the id of the domain used.
714 	 * If a valid cpu-to-node mapping is already available, use it  in numa_setup_cpu()
716 	 * the most recent mapping notified to us by the platform (eg: VPHN).  in numa_setup_cpu()
718 	 * core. If a valid cpu-to-node mapping is already available, for  in numa_setup_cpu()
826 	return memblock_end_of_DRAM() - start;  in numa_enforce_memory_limit()
831  * linux,drconf-usable-memory property
836 	 * For each lmb in ibm,dynamic-memory a corresponding  in read_usm_ranges()
837 	 * entry in linux,drconf-usable-memory property contains  in read_usm_ranges()
838 	 * a counter followed by that many (base, size) duple.  in read_usm_ranges()
839 	 * read the counter from linux,drconf-usable-memory  in read_usm_ranges()
845  * Extract NUMA information from the ibm,dynamic-reconfiguration-memory
860 	if ((lmb->flags & DRCONF_MEM_RESERVED)  in numa_setup_drmem_lmb()
861 	    || !(lmb->flags & DRCONF_MEM_ASSIGNED))  in numa_setup_drmem_lmb()
867 	base = lmb->base_addr;  in numa_setup_drmem_lmb()
890 	} while (--ranges);  in numa_setup_drmem_lmb()
903 		pr_warn("disabled by user\n");  in parse_numa_properties()
904 		return -1;  in parse_numa_properties()
944 			 * Don't fall back to default_nid yet -- we will plug  in parse_numa_properties()
975 			"linux,usable-memory", &len);  in parse_numa_properties()
984 		/* these are order-sensitive, and modify the buffer pointer */  in parse_numa_properties()
1007 		if (--ranges)  in parse_numa_properties()
1025 	 * ibm,dynamic-memory property in the  in parse_numa_properties()
1026 	 * ibm,dynamic-reconfiguration-memory node.  in parse_numa_properties()
1028 	memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");  in parse_numa_properties()
1046 	pr_debug("Memory hole size: %ldMB\n", (top_of_ram - total_ram) >> 20);  in setup_nonnuma()
1051 				  PFN_PHYS(end_pfn - start_pfn),  in setup_nonnuma()
1070 		 * If we used a CPU iterator here we would miss printing  in dump_numa_cpu_topology()
1081 					pr_cont("-%u", cpu - 1);  in dump_numa_cpu_topology()
1087 			pr_cont("-%u", nr_cpu_ids - 1);  in dump_numa_cpu_topology()
1095 	u64 spanned_pages = end_pfn - start_pfn;  in setup_node_data()
1099 	NODE_DATA(nid)->node_id = nid;  in setup_node_data()
1100 	NODE_DATA(nid)->node_start_pfn = start_pfn;  in setup_node_data()
1101 	NODE_DATA(nid)->node_spanned_pages = spanned_pages;  in setup_node_data()
1106 	struct device_node *rtas, *root;  in find_possible_nodes()  local
1114 	rtas = of_find_node_by_path("/rtas");  in find_possible_nodes()
1115 	if (!rtas)  in find_possible_nodes()
1119 	 * ibm,current-associativity-domains is a fairly recent property. If  in find_possible_nodes()
1120 	 * it doesn't exist, then fallback on ibm,max-associativity-domains.  in find_possible_nodes()
1128 	if (!of_get_property(root, "ibm,migratable-partition", NULL))  in find_possible_nodes()
1129 		domains = of_get_property(rtas,  in find_possible_nodes()
1130 					  "ibm,current-associativity-domains",  in find_possible_nodes()
1134 		domains = of_get_property(rtas, "ibm,max-associativity-domains",  in find_possible_nodes()
1153 	of_node_put(rtas);  in find_possible_nodes()
1192 		 * Powerpc with CONFIG_NUMA always used to have a node 0,  in mem_topology_setup()
1222 	 * _nocalls() + manual invocation is used because cpuhp is not yet  in initmem_init()
1248  * memory represented in the device tree by the property
1249  * ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory.
1262 		if ((lmb->flags & DRCONF_MEM_RESERVED)  in hot_add_drconf_scn_to_nid()
1263 		    || !(lmb->flags & DRCONF_MEM_ASSIGNED))  in hot_add_drconf_scn_to_nid()
1266 		if ((scn_addr < lmb->base_addr)  in hot_add_drconf_scn_to_nid()
1267 		    || (scn_addr >= (lmb->base_addr + lmb_size)))  in hot_add_drconf_scn_to_nid()
1325 	memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");  in hot_add_scn_to_nid()
1345 	dn = of_find_node_by_path("/rtas");  in hot_add_drconf_memory_max()
1347 		lrdr = of_get_property(dn, "ibm,lrdr-capacity", NULL);  in hot_add_drconf_memory_max()
1353 	memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");  in hot_add_drconf_memory_max()
1362  * memory_hotplug_max - return max address of memory that may be added
1364  * This is currently only used on systems that support drconfig memory
1429 		// Associate node <-> cpu, so cpu_up() calls  in find_and_update_cpu_nid()
1442 		return -1;  in cpu_to_coregroup_id()
1455 		return of_read_number(&associativity[index - 1], 1);  in cpu_to_coregroup_id()