xref: /openbmc/linux/arch/sh/kernel/cpu/proc.c (revision 4800cd83)
1 #include <linux/seq_file.h>
2 #include <linux/kernel.h>
3 #include <linux/module.h>
4 #include <asm/machvec.h>
5 #include <asm/processor.h>
6 
7 static const char *cpu_name[] = {
8 	[CPU_SH7201]	= "SH7201",
9 	[CPU_SH7203]	= "SH7203",	[CPU_SH7263]	= "SH7263",
10 	[CPU_SH7206]	= "SH7206",	[CPU_SH7619]	= "SH7619",
11 	[CPU_SH7705]	= "SH7705",	[CPU_SH7706]	= "SH7706",
12 	[CPU_SH7707]	= "SH7707",	[CPU_SH7708]	= "SH7708",
13 	[CPU_SH7709]	= "SH7709",	[CPU_SH7710]	= "SH7710",
14 	[CPU_SH7712]	= "SH7712",	[CPU_SH7720]	= "SH7720",
15 	[CPU_SH7721]	= "SH7721",	[CPU_SH7729]	= "SH7729",
16 	[CPU_SH7750]	= "SH7750",	[CPU_SH7750S]	= "SH7750S",
17 	[CPU_SH7750R]	= "SH7750R",	[CPU_SH7751]	= "SH7751",
18 	[CPU_SH7751R]	= "SH7751R",	[CPU_SH7760]	= "SH7760",
19 	[CPU_SH4_202]	= "SH4-202",	[CPU_SH4_501]	= "SH4-501",
20 	[CPU_SH7763]	= "SH7763",	[CPU_SH7770]	= "SH7770",
21 	[CPU_SH7780]	= "SH7780",	[CPU_SH7781]	= "SH7781",
22 	[CPU_SH7343]	= "SH7343",	[CPU_SH7785]	= "SH7785",
23 	[CPU_SH7786]	= "SH7786",	[CPU_SH7757]	= "SH7757",
24 	[CPU_SH7722]	= "SH7722",	[CPU_SHX3]	= "SH-X3",
25 	[CPU_SH5_101]	= "SH5-101",	[CPU_SH5_103]	= "SH5-103",
26 	[CPU_MXG]	= "MX-G",	[CPU_SH7723]	= "SH7723",
27 	[CPU_SH7366]	= "SH7366",	[CPU_SH7724]	= "SH7724",
28 	[CPU_SH7372]	= "SH7372",	[CPU_SH_NONE]	= "Unknown"
29 };
30 
31 const char *get_cpu_subtype(struct sh_cpuinfo *c)
32 {
33 	return cpu_name[c->type];
34 }
35 EXPORT_SYMBOL(get_cpu_subtype);
36 
37 #ifdef CONFIG_PROC_FS
38 /* Symbolic CPU flags, keep in sync with asm/cpu-features.h */
39 static const char *cpu_flags[] = {
40 	"none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr",
41 	"ptea", "llsc", "l2", "op32", "pteaex", NULL
42 };
43 
44 static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c)
45 {
46 	unsigned long i;
47 
48 	seq_printf(m, "cpu flags\t:");
49 
50 	if (!c->flags) {
51 		seq_printf(m, " %s\n", cpu_flags[0]);
52 		return;
53 	}
54 
55 	for (i = 0; cpu_flags[i]; i++)
56 		if ((c->flags & (1 << i)))
57 			seq_printf(m, " %s", cpu_flags[i+1]);
58 
59 	seq_printf(m, "\n");
60 }
61 
62 static void show_cacheinfo(struct seq_file *m, const char *type,
63 			   struct cache_info info)
64 {
65 	unsigned int cache_size;
66 
67 	cache_size = info.ways * info.sets * info.linesz;
68 
69 	seq_printf(m, "%s size\t: %2dKiB (%d-way)\n",
70 		   type, cache_size >> 10, info.ways);
71 }
72 
73 /*
74  *	Get CPU information for use by the procfs.
75  */
76 static int show_cpuinfo(struct seq_file *m, void *v)
77 {
78 	struct sh_cpuinfo *c = v;
79 	unsigned int cpu = c - cpu_data;
80 
81 	if (!cpu_online(cpu))
82 		return 0;
83 
84 	if (cpu == 0)
85 		seq_printf(m, "machine\t\t: %s\n", get_system_type());
86 	else
87 		seq_printf(m, "\n");
88 
89 	seq_printf(m, "processor\t: %d\n", cpu);
90 	seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
91 	seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c));
92 	if (c->cut_major == -1)
93 		seq_printf(m, "cut\t\t: unknown\n");
94 	else if (c->cut_minor == -1)
95 		seq_printf(m, "cut\t\t: %d.x\n", c->cut_major);
96 	else
97 		seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor);
98 
99 	show_cpuflags(m, c);
100 
101 	seq_printf(m, "cache type\t: ");
102 
103 	/*
104 	 * Check for what type of cache we have, we support both the
105 	 * unified cache on the SH-2 and SH-3, as well as the harvard
106 	 * style cache on the SH-4.
107 	 */
108 	if (c->icache.flags & SH_CACHE_COMBINED) {
109 		seq_printf(m, "unified\n");
110 		show_cacheinfo(m, "cache", c->icache);
111 	} else {
112 		seq_printf(m, "split (harvard)\n");
113 		show_cacheinfo(m, "icache", c->icache);
114 		show_cacheinfo(m, "dcache", c->dcache);
115 	}
116 
117 	/* Optional secondary cache */
118 	if (c->flags & CPU_HAS_L2_CACHE)
119 		show_cacheinfo(m, "scache", c->scache);
120 
121 	seq_printf(m, "address sizes\t: %u bits physical\n", c->phys_bits);
122 
123 	seq_printf(m, "bogomips\t: %lu.%02lu\n",
124 		     c->loops_per_jiffy/(500000/HZ),
125 		     (c->loops_per_jiffy/(5000/HZ)) % 100);
126 
127 	return 0;
128 }
129 
130 static void *c_start(struct seq_file *m, loff_t *pos)
131 {
132 	return *pos < NR_CPUS ? cpu_data + *pos : NULL;
133 }
134 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
135 {
136 	++*pos;
137 	return c_start(m, pos);
138 }
139 static void c_stop(struct seq_file *m, void *v)
140 {
141 }
142 const struct seq_operations cpuinfo_op = {
143 	.start	= c_start,
144 	.next	= c_next,
145 	.stop	= c_stop,
146 	.show	= show_cpuinfo,
147 };
148 #endif /* CONFIG_PROC_FS */
149