1 // SPDX-License-Identifier: GPL-2.0
2 /* cpu.c: Dinky routines to look for the kind of Sparc cpu
3 * we are on.
4 *
5 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
6 */
7
8 #include <linux/seq_file.h>
9 #include <linux/kernel.h>
10 #include <linux/export.h>
11 #include <linux/init.h>
12 #include <linux/smp.h>
13 #include <linux/threads.h>
14
15 #include <asm/spitfire.h>
16 #include <asm/pgtable.h>
17 #include <asm/oplib.h>
18 #include <asm/setup.h>
19 #include <asm/page.h>
20 #include <asm/head.h>
21 #include <asm/psr.h>
22 #include <asm/mbus.h>
23 #include <asm/cpudata.h>
24
25 #include "kernel.h"
26 #include "entry.h"
27
28 DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 };
29 EXPORT_PER_CPU_SYMBOL(__cpu_data);
30
31 int ncpus_probed;
32 unsigned int fsr_storage;
33
34 struct cpu_info {
35 int psr_vers;
36 const char *name;
37 const char *pmu_name;
38 };
39
40 struct fpu_info {
41 int fp_vers;
42 const char *name;
43 };
44
45 #define NOCPU 8
46 #define NOFPU 8
47
48 struct manufacturer_info {
49 int psr_impl;
50 struct cpu_info cpu_info[NOCPU];
51 struct fpu_info fpu_info[NOFPU];
52 };
53
54 #define CPU(ver, _name) \
55 { .psr_vers = ver, .name = _name }
56
57 #define CPU_PMU(ver, _name, _pmu_name) \
58 { .psr_vers = ver, .name = _name, .pmu_name = _pmu_name }
59
60 #define FPU(ver, _name) \
61 { .fp_vers = ver, .name = _name }
62
63 static const struct manufacturer_info __initconst manufacturer_info[] = {
64 {
65 0,
66 /* Sun4/100, 4/200, SLC */
67 .cpu_info = {
68 CPU(0, "Fujitsu MB86900/1A or LSI L64831 SparcKIT-40"),
69 /* borned STP1012PGA */
70 CPU(4, "Fujitsu MB86904"),
71 CPU(5, "Fujitsu TurboSparc MB86907"),
72 CPU(-1, NULL)
73 },
74 .fpu_info = {
75 FPU(0, "Fujitsu MB86910 or Weitek WTL1164/5"),
76 FPU(1, "Fujitsu MB86911 or Weitek WTL1164/5 or LSI L64831"),
77 FPU(2, "LSI Logic L64802 or Texas Instruments ACT8847"),
78 /* SparcStation SLC, SparcStation1 */
79 FPU(3, "Weitek WTL3170/2"),
80 /* SPARCstation-5 */
81 FPU(4, "Lsi Logic/Meiko L64804 or compatible"),
82 FPU(-1, NULL)
83 }
84 },{
85 1,
86 .cpu_info = {
87 /* SparcStation2, SparcServer 490 & 690 */
88 CPU(0, "LSI Logic Corporation - L64811"),
89 /* SparcStation2 */
90 CPU(1, "Cypress/ROSS CY7C601"),
91 /* Embedded controller */
92 CPU(3, "Cypress/ROSS CY7C611"),
93 /* Ross Technologies HyperSparc */
94 CPU(0xf, "ROSS HyperSparc RT620"),
95 CPU(0xe, "ROSS HyperSparc RT625 or RT626"),
96 CPU(-1, NULL)
97 },
98 .fpu_info = {
99 FPU(0, "ROSS HyperSparc combined IU/FPU"),
100 FPU(1, "Lsi Logic L64814"),
101 FPU(2, "Texas Instruments TMS390-C602A"),
102 FPU(3, "Cypress CY7C602 FPU"),
103 FPU(-1, NULL)
104 }
105 },{
106 2,
107 .cpu_info = {
108 /* ECL Implementation, CRAY S-MP Supercomputer... AIEEE! */
109 /* Someone please write the code to support this beast! ;) */
110 CPU(0, "Bipolar Integrated Technology - B5010"),
111 CPU(-1, NULL)
112 },
113 .fpu_info = {
114 FPU(-1, NULL)
115 }
116 },{
117 3,
118 .cpu_info = {
119 CPU(0, "LSI Logic Corporation - unknown-type"),
120 CPU(-1, NULL)
121 },
122 .fpu_info = {
123 FPU(-1, NULL)
124 }
125 },{
126 PSR_IMPL_TI,
127 .cpu_info = {
128 CPU(0, "Texas Instruments, Inc. - SuperSparc-(II)"),
129 /* SparcClassic -- borned STP1010TAB-50*/
130 CPU(1, "Texas Instruments, Inc. - MicroSparc"),
131 CPU(2, "Texas Instruments, Inc. - MicroSparc II"),
132 CPU(3, "Texas Instruments, Inc. - SuperSparc 51"),
133 CPU(4, "Texas Instruments, Inc. - SuperSparc 61"),
134 CPU(5, "Texas Instruments, Inc. - unknown"),
135 CPU(-1, NULL)
136 },
137 .fpu_info = {
138 /* SuperSparc 50 module */
139 FPU(0, "SuperSparc on-chip FPU"),
140 /* SparcClassic */
141 FPU(4, "TI MicroSparc on chip FPU"),
142 FPU(-1, NULL)
143 }
144 },{
145 5,
146 .cpu_info = {
147 CPU(0, "Matsushita - MN10501"),
148 CPU(-1, NULL)
149 },
150 .fpu_info = {
151 FPU(0, "Matsushita MN10501"),
152 FPU(-1, NULL)
153 }
154 },{
155 6,
156 .cpu_info = {
157 CPU(0, "Philips Corporation - unknown"),
158 CPU(-1, NULL)
159 },
160 .fpu_info = {
161 FPU(-1, NULL)
162 }
163 },{
164 7,
165 .cpu_info = {
166 CPU(0, "Harvest VLSI Design Center, Inc. - unknown"),
167 CPU(-1, NULL)
168 },
169 .fpu_info = {
170 FPU(-1, NULL)
171 }
172 },{
173 8,
174 .cpu_info = {
175 CPU(0, "Systems and Processes Engineering Corporation (SPEC)"),
176 CPU(-1, NULL)
177 },
178 .fpu_info = {
179 FPU(-1, NULL)
180 }
181 },{
182 9,
183 .cpu_info = {
184 /* Gallium arsenide 200MHz, BOOOOGOOOOMIPS!!! */
185 CPU(0, "Fujitsu or Weitek Power-UP"),
186 CPU(1, "Fujitsu or Weitek Power-UP"),
187 CPU(2, "Fujitsu or Weitek Power-UP"),
188 CPU(3, "Fujitsu or Weitek Power-UP"),
189 CPU(-1, NULL)
190 },
191 .fpu_info = {
192 FPU(3, "Fujitsu or Weitek on-chip FPU"),
193 FPU(-1, NULL)
194 }
195 },{
196 PSR_IMPL_LEON, /* Aeroflex Gaisler */
197 .cpu_info = {
198 CPU(3, "LEON"),
199 CPU(-1, NULL)
200 },
201 .fpu_info = {
202 FPU(2, "GRFPU"),
203 FPU(3, "GRFPU-Lite"),
204 FPU(-1, NULL)
205 }
206 },{
207 0x17,
208 .cpu_info = {
209 CPU_PMU(0x10, "TI UltraSparc I (SpitFire)", "ultra12"),
210 CPU_PMU(0x11, "TI UltraSparc II (BlackBird)", "ultra12"),
211 CPU_PMU(0x12, "TI UltraSparc IIi (Sabre)", "ultra12"),
212 CPU_PMU(0x13, "TI UltraSparc IIe (Hummingbird)", "ultra12"),
213 CPU(-1, NULL)
214 },
215 .fpu_info = {
216 FPU(0x10, "UltraSparc I integrated FPU"),
217 FPU(0x11, "UltraSparc II integrated FPU"),
218 FPU(0x12, "UltraSparc IIi integrated FPU"),
219 FPU(0x13, "UltraSparc IIe integrated FPU"),
220 FPU(-1, NULL)
221 }
222 },{
223 0x22,
224 .cpu_info = {
225 CPU_PMU(0x10, "TI UltraSparc I (SpitFire)", "ultra12"),
226 CPU(-1, NULL)
227 },
228 .fpu_info = {
229 FPU(0x10, "UltraSparc I integrated FPU"),
230 FPU(-1, NULL)
231 }
232 },{
233 0x3e,
234 .cpu_info = {
235 CPU_PMU(0x14, "TI UltraSparc III (Cheetah)", "ultra3"),
236 CPU_PMU(0x15, "TI UltraSparc III+ (Cheetah+)", "ultra3+"),
237 CPU_PMU(0x16, "TI UltraSparc IIIi (Jalapeno)", "ultra3i"),
238 CPU_PMU(0x18, "TI UltraSparc IV (Jaguar)", "ultra3+"),
239 CPU_PMU(0x19, "TI UltraSparc IV+ (Panther)", "ultra4+"),
240 CPU_PMU(0x22, "TI UltraSparc IIIi+ (Serrano)", "ultra3i"),
241 CPU(-1, NULL)
242 },
243 .fpu_info = {
244 FPU(0x14, "UltraSparc III integrated FPU"),
245 FPU(0x15, "UltraSparc III+ integrated FPU"),
246 FPU(0x16, "UltraSparc IIIi integrated FPU"),
247 FPU(0x18, "UltraSparc IV integrated FPU"),
248 FPU(0x19, "UltraSparc IV+ integrated FPU"),
249 FPU(0x22, "UltraSparc IIIi+ integrated FPU"),
250 FPU(-1, NULL)
251 }
252 }};
253
254 /* In order to get the fpu type correct, you need to take the IDPROM's
255 * machine type value into consideration too. I will fix this.
256 */
257
258 static const char *sparc_cpu_type;
259 static const char *sparc_fpu_type;
260 const char *sparc_pmu_type;
261
262
set_cpu_and_fpu(int psr_impl,int psr_vers,int fpu_vers)263 static void __init set_cpu_and_fpu(int psr_impl, int psr_vers, int fpu_vers)
264 {
265 const struct manufacturer_info *manuf;
266 int i;
267
268 sparc_cpu_type = NULL;
269 sparc_fpu_type = NULL;
270 sparc_pmu_type = NULL;
271 manuf = NULL;
272
273 for (i = 0; i < ARRAY_SIZE(manufacturer_info); i++)
274 {
275 if (psr_impl == manufacturer_info[i].psr_impl) {
276 manuf = &manufacturer_info[i];
277 break;
278 }
279 }
280 if (manuf != NULL)
281 {
282 const struct cpu_info *cpu;
283 const struct fpu_info *fpu;
284
285 cpu = &manuf->cpu_info[0];
286 while (cpu->psr_vers != -1)
287 {
288 if (cpu->psr_vers == psr_vers) {
289 sparc_cpu_type = cpu->name;
290 sparc_pmu_type = cpu->pmu_name;
291 sparc_fpu_type = "No FPU";
292 break;
293 }
294 cpu++;
295 }
296 fpu = &manuf->fpu_info[0];
297 while (fpu->fp_vers != -1)
298 {
299 if (fpu->fp_vers == fpu_vers) {
300 sparc_fpu_type = fpu->name;
301 break;
302 }
303 fpu++;
304 }
305 }
306 if (sparc_cpu_type == NULL)
307 {
308 printk(KERN_ERR "CPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
309 psr_impl, psr_vers);
310 sparc_cpu_type = "Unknown CPU";
311 }
312 if (sparc_fpu_type == NULL)
313 {
314 printk(KERN_ERR "FPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
315 psr_impl, fpu_vers);
316 sparc_fpu_type = "Unknown FPU";
317 }
318 if (sparc_pmu_type == NULL)
319 sparc_pmu_type = "Unknown PMU";
320 }
321
322 #ifdef CONFIG_SPARC32
show_cpuinfo(struct seq_file * m,void * __unused)323 static int show_cpuinfo(struct seq_file *m, void *__unused)
324 {
325 seq_printf(m,
326 "cpu\t\t: %s\n"
327 "fpu\t\t: %s\n"
328 "promlib\t\t: Version %d Revision %d\n"
329 "prom\t\t: %d.%d\n"
330 "type\t\t: %s\n"
331 "ncpus probed\t: %d\n"
332 "ncpus active\t: %d\n"
333 #ifndef CONFIG_SMP
334 "CPU0Bogo\t: %lu.%02lu\n"
335 "CPU0ClkTck\t: %ld\n"
336 #endif
337 ,
338 sparc_cpu_type,
339 sparc_fpu_type ,
340 romvec->pv_romvers,
341 prom_rev,
342 romvec->pv_printrev >> 16,
343 romvec->pv_printrev & 0xffff,
344 &cputypval[0],
345 ncpus_probed,
346 num_online_cpus()
347 #ifndef CONFIG_SMP
348 , cpu_data(0).udelay_val/(500000/HZ),
349 (cpu_data(0).udelay_val/(5000/HZ)) % 100,
350 cpu_data(0).clock_tick
351 #endif
352 );
353
354 #ifdef CONFIG_SMP
355 smp_bogo(m);
356 #endif
357 mmu_info(m);
358 #ifdef CONFIG_SMP
359 smp_info(m);
360 #endif
361 return 0;
362 }
363 #endif /* CONFIG_SPARC32 */
364
365 #ifdef CONFIG_SPARC64
366 unsigned int dcache_parity_tl1_occurred;
367 unsigned int icache_parity_tl1_occurred;
368
369
show_cpuinfo(struct seq_file * m,void * __unused)370 static int show_cpuinfo(struct seq_file *m, void *__unused)
371 {
372 seq_printf(m,
373 "cpu\t\t: %s\n"
374 "fpu\t\t: %s\n"
375 "pmu\t\t: %s\n"
376 "prom\t\t: %s\n"
377 "type\t\t: %s\n"
378 "ncpus probed\t: %d\n"
379 "ncpus active\t: %d\n"
380 "D$ parity tl1\t: %u\n"
381 "I$ parity tl1\t: %u\n"
382 #ifndef CONFIG_SMP
383 "Cpu0ClkTck\t: %016lx\n"
384 #endif
385 ,
386 sparc_cpu_type,
387 sparc_fpu_type,
388 sparc_pmu_type,
389 prom_version,
390 ((tlb_type == hypervisor) ?
391 "sun4v" :
392 "sun4u"),
393 ncpus_probed,
394 num_online_cpus(),
395 dcache_parity_tl1_occurred,
396 icache_parity_tl1_occurred
397 #ifndef CONFIG_SMP
398 , cpu_data(0).clock_tick
399 #endif
400 );
401 cpucap_info(m);
402 #ifdef CONFIG_SMP
403 smp_bogo(m);
404 #endif
405 mmu_info(m);
406 #ifdef CONFIG_SMP
407 smp_info(m);
408 #endif
409 return 0;
410 }
411 #endif /* CONFIG_SPARC64 */
412
c_start(struct seq_file * m,loff_t * pos)413 static void *c_start(struct seq_file *m, loff_t *pos)
414 {
415 /* The pointer we are returning is arbitrary,
416 * it just has to be non-NULL and not IS_ERR
417 * in the success case.
418 */
419 return *pos == 0 ? &c_start : NULL;
420 }
421
c_next(struct seq_file * m,void * v,loff_t * pos)422 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
423 {
424 ++*pos;
425 return c_start(m, pos);
426 }
427
c_stop(struct seq_file * m,void * v)428 static void c_stop(struct seq_file *m, void *v)
429 {
430 }
431
432 const struct seq_operations cpuinfo_op = {
433 .start =c_start,
434 .next = c_next,
435 .stop = c_stop,
436 .show = show_cpuinfo,
437 };
438
439 #ifdef CONFIG_SPARC32
cpu_type_probe(void)440 static int __init cpu_type_probe(void)
441 {
442 int psr_impl, psr_vers, fpu_vers;
443 int psr;
444
445 psr_impl = ((get_psr() >> PSR_IMPL_SHIFT) & PSR_IMPL_SHIFTED_MASK);
446 psr_vers = ((get_psr() >> PSR_VERS_SHIFT) & PSR_VERS_SHIFTED_MASK);
447
448 psr = get_psr();
449 put_psr(psr | PSR_EF);
450
451 if (psr_impl == PSR_IMPL_LEON)
452 fpu_vers = get_psr() & PSR_EF ? ((get_fsr() >> 17) & 0x7) : 7;
453 else
454 fpu_vers = ((get_fsr() >> 17) & 0x7);
455
456 put_psr(psr);
457
458 set_cpu_and_fpu(psr_impl, psr_vers, fpu_vers);
459
460 return 0;
461 }
462 #endif /* CONFIG_SPARC32 */
463
464 #ifdef CONFIG_SPARC64
sun4v_cpu_probe(void)465 static void __init sun4v_cpu_probe(void)
466 {
467 switch (sun4v_chip_type) {
468 case SUN4V_CHIP_NIAGARA1:
469 sparc_cpu_type = "UltraSparc T1 (Niagara)";
470 sparc_fpu_type = "UltraSparc T1 integrated FPU";
471 sparc_pmu_type = "niagara";
472 break;
473
474 case SUN4V_CHIP_NIAGARA2:
475 sparc_cpu_type = "UltraSparc T2 (Niagara2)";
476 sparc_fpu_type = "UltraSparc T2 integrated FPU";
477 sparc_pmu_type = "niagara2";
478 break;
479
480 case SUN4V_CHIP_NIAGARA3:
481 sparc_cpu_type = "UltraSparc T3 (Niagara3)";
482 sparc_fpu_type = "UltraSparc T3 integrated FPU";
483 sparc_pmu_type = "niagara3";
484 break;
485
486 case SUN4V_CHIP_NIAGARA4:
487 sparc_cpu_type = "UltraSparc T4 (Niagara4)";
488 sparc_fpu_type = "UltraSparc T4 integrated FPU";
489 sparc_pmu_type = "niagara4";
490 break;
491
492 case SUN4V_CHIP_NIAGARA5:
493 sparc_cpu_type = "UltraSparc T5 (Niagara5)";
494 sparc_fpu_type = "UltraSparc T5 integrated FPU";
495 sparc_pmu_type = "niagara5";
496 break;
497
498 case SUN4V_CHIP_SPARC_M6:
499 sparc_cpu_type = "SPARC-M6";
500 sparc_fpu_type = "SPARC-M6 integrated FPU";
501 sparc_pmu_type = "sparc-m6";
502 break;
503
504 case SUN4V_CHIP_SPARC_M7:
505 sparc_cpu_type = "SPARC-M7";
506 sparc_fpu_type = "SPARC-M7 integrated FPU";
507 sparc_pmu_type = "sparc-m7";
508 break;
509
510 case SUN4V_CHIP_SPARC_M8:
511 sparc_cpu_type = "SPARC-M8";
512 sparc_fpu_type = "SPARC-M8 integrated FPU";
513 sparc_pmu_type = "sparc-m8";
514 break;
515
516 case SUN4V_CHIP_SPARC_SN:
517 sparc_cpu_type = "SPARC-SN";
518 sparc_fpu_type = "SPARC-SN integrated FPU";
519 sparc_pmu_type = "sparc-sn";
520 break;
521
522 case SUN4V_CHIP_SPARC64X:
523 sparc_cpu_type = "SPARC64-X";
524 sparc_fpu_type = "SPARC64-X integrated FPU";
525 sparc_pmu_type = "sparc64-x";
526 break;
527
528 default:
529 printk(KERN_WARNING "CPU: Unknown sun4v cpu type [%s]\n",
530 prom_cpu_compatible);
531 sparc_cpu_type = "Unknown SUN4V CPU";
532 sparc_fpu_type = "Unknown SUN4V FPU";
533 sparc_pmu_type = "Unknown SUN4V PMU";
534 break;
535 }
536 }
537
cpu_type_probe(void)538 static int __init cpu_type_probe(void)
539 {
540 if (tlb_type == hypervisor) {
541 sun4v_cpu_probe();
542 } else {
543 unsigned long ver;
544 int manuf, impl;
545
546 __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
547
548 manuf = ((ver >> 48) & 0xffff);
549 impl = ((ver >> 32) & 0xffff);
550 set_cpu_and_fpu(manuf, impl, impl);
551 }
552 return 0;
553 }
554 #endif /* CONFIG_SPARC64 */
555
556 early_initcall(cpu_type_probe);
557
