1 /* 2 * Copyright (C) 1995, 1996, 2001 Ralf Baechle 3 * Copyright (C) 2001, 2004 MIPS Technologies, Inc. 4 * Copyright (C) 2004 Maciej W. Rozycki 5 */ 6 #include <linux/delay.h> 7 #include <linux/kernel.h> 8 #include <linux/sched.h> 9 #include <linux/seq_file.h> 10 #include <asm/bootinfo.h> 11 #include <asm/cpu.h> 12 #include <asm/cpu-features.h> 13 #include <asm/idle.h> 14 #include <asm/mipsregs.h> 15 #include <asm/processor.h> 16 #include <asm/prom.h> 17 18 unsigned int vced_count, vcei_count; 19 20 /* 21 * * No lock; only written during early bootup by CPU 0. 22 * */ 23 static RAW_NOTIFIER_HEAD(proc_cpuinfo_chain); 24 25 int __ref register_proc_cpuinfo_notifier(struct notifier_block *nb) 26 { 27 return raw_notifier_chain_register(&proc_cpuinfo_chain, nb); 28 } 29 30 int proc_cpuinfo_notifier_call_chain(unsigned long val, void *v) 31 { 32 return raw_notifier_call_chain(&proc_cpuinfo_chain, val, v); 33 } 34 35 static int show_cpuinfo(struct seq_file *m, void *v) 36 { 37 struct proc_cpuinfo_notifier_args proc_cpuinfo_notifier_args; 38 unsigned long n = (unsigned long) v - 1; 39 unsigned int version = cpu_data[n].processor_id; 40 unsigned int fp_vers = cpu_data[n].fpu_id; 41 char fmt [64]; 42 int i; 43 44 #ifdef CONFIG_SMP 45 if (!cpu_online(n)) 46 return 0; 47 #endif 48 49 /* 50 * For the first processor also print the system type 51 */ 52 if (n == 0) { 53 seq_printf(m, "system type\t\t: %s\n", get_system_type()); 54 if (mips_get_machine_name()) 55 seq_printf(m, "machine\t\t\t: %s\n", 56 mips_get_machine_name()); 57 } 58 59 seq_printf(m, "processor\t\t: %ld\n", n); 60 sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n", 61 cpu_data[n].options & MIPS_CPU_FPU ? " FPU V%d.%d" : ""); 62 seq_printf(m, fmt, __cpu_name[n], 63 (version >> 4) & 0x0f, version & 0x0f, 64 (fp_vers >> 4) & 0x0f, fp_vers & 0x0f); 65 seq_printf(m, "BogoMIPS\t\t: %u.%02u\n", 66 cpu_data[n].udelay_val / (500000/HZ), 67 (cpu_data[n].udelay_val / (5000/HZ)) % 100); 68 seq_printf(m, "wait instruction\t: %s\n", cpu_wait ? "yes" : "no"); 69 seq_printf(m, "microsecond timers\t: %s\n", 70 cpu_has_counter ? "yes" : "no"); 71 seq_printf(m, "tlb_entries\t\t: %d\n", cpu_data[n].tlbsize); 72 seq_printf(m, "extra interrupt vector\t: %s\n", 73 cpu_has_divec ? "yes" : "no"); 74 seq_printf(m, "hardware watchpoint\t: %s", 75 cpu_has_watch ? "yes, " : "no\n"); 76 if (cpu_has_watch) { 77 seq_printf(m, "count: %d, address/irw mask: [", 78 cpu_data[n].watch_reg_count); 79 for (i = 0; i < cpu_data[n].watch_reg_count; i++) 80 seq_printf(m, "%s0x%04x", i ? ", " : "" , 81 cpu_data[n].watch_reg_masks[i]); 82 seq_printf(m, "]\n"); 83 } 84 85 seq_printf(m, "isa\t\t\t:"); 86 if (cpu_has_mips_r1) 87 seq_printf(m, " mips1"); 88 if (cpu_has_mips_2) 89 seq_printf(m, "%s", " mips2"); 90 if (cpu_has_mips_3) 91 seq_printf(m, "%s", " mips3"); 92 if (cpu_has_mips_4) 93 seq_printf(m, "%s", " mips4"); 94 if (cpu_has_mips_5) 95 seq_printf(m, "%s", " mips5"); 96 if (cpu_has_mips32r1) 97 seq_printf(m, "%s", " mips32r1"); 98 if (cpu_has_mips32r2) 99 seq_printf(m, "%s", " mips32r2"); 100 if (cpu_has_mips32r6) 101 seq_printf(m, "%s", " mips32r6"); 102 if (cpu_has_mips64r1) 103 seq_printf(m, "%s", " mips64r1"); 104 if (cpu_has_mips64r2) 105 seq_printf(m, "%s", " mips64r2"); 106 if (cpu_has_mips64r6) 107 seq_printf(m, "%s", " mips64r6"); 108 seq_printf(m, "\n"); 109 110 seq_printf(m, "ASEs implemented\t:"); 111 if (cpu_has_mips16) seq_printf(m, "%s", " mips16"); 112 if (cpu_has_mdmx) seq_printf(m, "%s", " mdmx"); 113 if (cpu_has_mips3d) seq_printf(m, "%s", " mips3d"); 114 if (cpu_has_smartmips) seq_printf(m, "%s", " smartmips"); 115 if (cpu_has_dsp) seq_printf(m, "%s", " dsp"); 116 if (cpu_has_dsp2) seq_printf(m, "%s", " dsp2"); 117 if (cpu_has_mipsmt) seq_printf(m, "%s", " mt"); 118 if (cpu_has_mmips) seq_printf(m, "%s", " micromips"); 119 if (cpu_has_vz) seq_printf(m, "%s", " vz"); 120 if (cpu_has_msa) seq_printf(m, "%s", " msa"); 121 if (cpu_has_eva) seq_printf(m, "%s", " eva"); 122 if (cpu_has_htw) seq_printf(m, "%s", " htw"); 123 if (cpu_has_xpa) seq_printf(m, "%s", " xpa"); 124 seq_printf(m, "\n"); 125 126 if (cpu_has_mmips) { 127 seq_printf(m, "micromips kernel\t: %s\n", 128 (read_c0_config3() & MIPS_CONF3_ISA_OE) ? "yes" : "no"); 129 } 130 seq_printf(m, "shadow register sets\t: %d\n", 131 cpu_data[n].srsets); 132 seq_printf(m, "kscratch registers\t: %d\n", 133 hweight8(cpu_data[n].kscratch_mask)); 134 seq_printf(m, "package\t\t\t: %d\n", cpu_data[n].package); 135 seq_printf(m, "core\t\t\t: %d\n", cpu_data[n].core); 136 137 sprintf(fmt, "VCE%%c exceptions\t\t: %s\n", 138 cpu_has_vce ? "%u" : "not available"); 139 seq_printf(m, fmt, 'D', vced_count); 140 seq_printf(m, fmt, 'I', vcei_count); 141 142 proc_cpuinfo_notifier_args.m = m; 143 proc_cpuinfo_notifier_args.n = n; 144 145 raw_notifier_call_chain(&proc_cpuinfo_chain, 0, 146 &proc_cpuinfo_notifier_args); 147 148 seq_printf(m, "\n"); 149 150 return 0; 151 } 152 153 static void *c_start(struct seq_file *m, loff_t *pos) 154 { 155 unsigned long i = *pos; 156 157 return i < NR_CPUS ? (void *) (i + 1) : NULL; 158 } 159 160 static void *c_next(struct seq_file *m, void *v, loff_t *pos) 161 { 162 ++*pos; 163 return c_start(m, pos); 164 } 165 166 static void c_stop(struct seq_file *m, void *v) 167 { 168 } 169 170 const struct seq_operations cpuinfo_op = { 171 .start = c_start, 172 .next = c_next, 173 .stop = c_stop, 174 .show = show_cpuinfo, 175 }; 176