1// SPDX-License-Identifier: GPL-2.0-or-later
 2
 3#include <linux/memblock.h>
 4#include <linux/printk.h>
 5#include <linux/numa.h>
 6#include <linux/numa_memblks.h>
 7
 8struct pglist_data *node_data[MAX_NUMNODES];
 9EXPORT_SYMBOL(node_data);
10
11/* Allocate NODE_DATA for a node on the local memory */
12void __init alloc_node_data(int nid)
13{
14	const size_t nd_size = roundup(sizeof(pg_data_t), SMP_CACHE_BYTES);
15	u64 nd_pa;
16	void *nd;
17	int tnid;
18
19	/* Allocate node data.  Try node-local memory and then any node. */
20	nd_pa = memblock_phys_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid);
21	if (!nd_pa)
22		panic("Cannot allocate %zu bytes for node %d data\n",
23		      nd_size, nid);
24	nd = __va(nd_pa);
25
26	/* report and initialize */
27	pr_info("NODE_DATA(%d) allocated [mem %#010Lx-%#010Lx]\n", nid,
28		nd_pa, nd_pa + nd_size - 1);
29	tnid = early_pfn_to_nid(nd_pa >> PAGE_SHIFT);
30	if (tnid != nid)
31		pr_info("    NODE_DATA(%d) on node %d\n", nid, tnid);
32
33	node_data[nid] = nd;
34	memset(NODE_DATA(nid), 0, sizeof(pg_data_t));
35}
36
37void __init alloc_offline_node_data(int nid)
38{
39	pg_data_t *pgdat;
40
41	pgdat = memblock_alloc(sizeof(*pgdat), SMP_CACHE_BYTES);
42	if (!pgdat)
43		panic("Cannot allocate %zuB for node %d.\n",
44		      sizeof(*pgdat), nid);
45
46	node_data[nid] = pgdat;
47}
48
49/* Stub functions: */
50
51#ifndef memory_add_physaddr_to_nid
52int memory_add_physaddr_to_nid(u64 start)
53{
54	pr_info_once("Unknown online node for memory at 0x%llx, assuming node 0\n",
55			start);
56	return 0;
57}
58EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
59#endif
60
61#ifndef phys_to_target_node
62int phys_to_target_node(u64 start)
63{
64	pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n",
65			start);
66	return 0;
67}
68EXPORT_SYMBOL_GPL(phys_to_target_node);
69#endif