1// SPDX-License-Identifier: GPL-2.0
2#include <linux/seq_file.h>
3#include <linux/kernel.h>
4#include <linux/module.h>
5#include <asm/machvec.h>
6#include <asm/processor.h>
7
8static const char *cpu_name[] = {
9	[CPU_SH7201]	= "SH7201",
10	[CPU_SH7203]	= "SH7203",	[CPU_SH7263]	= "SH7263",
11	[CPU_SH7264]	= "SH7264",	[CPU_SH7269]	= "SH7269",
12	[CPU_SH7206]	= "SH7206",	[CPU_SH7619]	= "SH7619",
13	[CPU_SH7705]	= "SH7705",	[CPU_SH7706]	= "SH7706",
14	[CPU_SH7707]	= "SH7707",	[CPU_SH7708]	= "SH7708",
15	[CPU_SH7709]	= "SH7709",	[CPU_SH7710]	= "SH7710",
16	[CPU_SH7712]	= "SH7712",	[CPU_SH7720]	= "SH7720",
17	[CPU_SH7721]	= "SH7721",	[CPU_SH7729]	= "SH7729",
18	[CPU_SH7750]	= "SH7750",	[CPU_SH7750S]	= "SH7750S",
19	[CPU_SH7750R]	= "SH7750R",	[CPU_SH7751]	= "SH7751",
20	[CPU_SH7751R]	= "SH7751R",	[CPU_SH7760]	= "SH7760",
21	[CPU_SH4_202]	= "SH4-202",	[CPU_SH4_501]	= "SH4-501",
22	[CPU_SH7763]	= "SH7763",	[CPU_SH7770]	= "SH7770",
23	[CPU_SH7780]	= "SH7780",	[CPU_SH7781]	= "SH7781",
24	[CPU_SH7343]	= "SH7343",	[CPU_SH7785]	= "SH7785",
25	[CPU_SH7786]	= "SH7786",	[CPU_SH7757]	= "SH7757",
26	[CPU_SH7722]	= "SH7722",	[CPU_SHX3]	= "SH-X3",
27	[CPU_MXG]	= "MX-G",	[CPU_SH7723]	= "SH7723",
28	[CPU_SH7366]	= "SH7366",	[CPU_SH7724]	= "SH7724",
29	[CPU_SH7372]	= "SH7372",	[CPU_SH7734]	= "SH7734",
30	[CPU_J2]	= "J2",
31	[CPU_SH_NONE]	= "Unknown"
32};
33
34const char *get_cpu_subtype(struct sh_cpuinfo *c)
35{
36	return cpu_name[c->type];
37}
38EXPORT_SYMBOL(get_cpu_subtype);
39
40#ifdef CONFIG_PROC_FS
41/* Symbolic CPU flags, keep in sync with asm/cpu-features.h */
42static const char *cpu_flags[] = {
43	"none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr",
44	"ptea", "llsc", "l2", "op32", "pteaex", NULL
45};
46
47static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c)
48{
49	unsigned long i;
50
51	seq_printf(m, "cpu flags\t:");
52
53	if (!c->flags) {
54		seq_printf(m, " %s\n", cpu_flags[0]);
55		return;
56	}
57
58	for (i = 0; cpu_flags[i]; i++)
59		if ((c->flags & (1 << i)))
60			seq_printf(m, " %s", cpu_flags[i+1]);
61
62	seq_printf(m, "\n");
63}
64
65static void show_cacheinfo(struct seq_file *m, const char *type,
66			   struct cache_info info)
67{
68	unsigned int cache_size;
69
70	cache_size = info.ways * info.sets * info.linesz;
71
72	seq_printf(m, "%s size\t: %2dKiB (%d-way)\n",
73		   type, cache_size >> 10, info.ways);
74}
75
76/*
77 *	Get CPU information for use by the procfs.
78 */
79static int show_cpuinfo(struct seq_file *m, void *v)
80{
81	struct sh_cpuinfo *c = v;
82	unsigned int cpu = c - cpu_data;
83
84	if (!cpu_online(cpu))
85		return 0;
86
87	if (cpu == 0)
88		seq_printf(m, "machine\t\t: %s\n", get_system_type());
89	else
90		seq_printf(m, "\n");
91
92	seq_printf(m, "processor\t: %d\n", cpu);
93	seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
94	seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c));
95	if (c->cut_major == -1)
96		seq_printf(m, "cut\t\t: unknown\n");
97	else if (c->cut_minor == -1)
98		seq_printf(m, "cut\t\t: %d.x\n", c->cut_major);
99	else
100		seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor);
101
102	show_cpuflags(m, c);
103
104	seq_printf(m, "cache type\t: ");
105
106	/*
107	 * Check for what type of cache we have, we support both the
108	 * unified cache on the SH-2 and SH-3, as well as the harvard
109	 * style cache on the SH-4.
110	 */
111	if (c->icache.flags & SH_CACHE_COMBINED) {
112		seq_printf(m, "unified\n");
113		show_cacheinfo(m, "cache", c->icache);
114	} else {
115		seq_printf(m, "split (harvard)\n");
116		show_cacheinfo(m, "icache", c->icache);
117		show_cacheinfo(m, "dcache", c->dcache);
118	}
119
120	/* Optional secondary cache */
121	if (c->flags & CPU_HAS_L2_CACHE)
122		show_cacheinfo(m, "scache", c->scache);
123
124	seq_printf(m, "address sizes\t: %u bits physical\n", c->phys_bits);
125
126	seq_printf(m, "bogomips\t: %lu.%02lu\n",
127		     c->loops_per_jiffy/(500000/HZ),
128		     (c->loops_per_jiffy/(5000/HZ)) % 100);
129
130	return 0;
131}
132
133static void *c_start(struct seq_file *m, loff_t *pos)
134{
135	return *pos < NR_CPUS ? cpu_data + *pos : NULL;
136}
137static void *c_next(struct seq_file *m, void *v, loff_t *pos)
138{
139	++*pos;
140	return c_start(m, pos);
141}
142static void c_stop(struct seq_file *m, void *v)
143{
144}
145const struct seq_operations cpuinfo_op = {
146	.start	= c_start,
147	.next	= c_next,
148	.stop	= c_stop,
149	.show	= show_cpuinfo,
150};
151#endif /* CONFIG_PROC_FS */
152