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