1#include <linux/device.h>
2#include <linux/cpu.h>
3#include <linux/smp.h>
4#include <linux/percpu.h>
5#include <linux/init.h>
6#include <linux/sched.h>
7#include <linux/export.h>
8#include <linux/nodemask.h>
9#include <linux/cpumask.h>
10#include <linux/notifier.h>
11
12#include <asm/current.h>
13#include <asm/processor.h>
14#include <asm/cputable.h>
15#include <asm/hvcall.h>
16#include <asm/prom.h>
17#include <asm/machdep.h>
18#include <asm/smp.h>
19#include <asm/pmc.h>
20#include <asm/firmware.h>
21
22#include "cacheinfo.h"
23
24#ifdef CONFIG_PPC64
25#include <asm/paca.h>
26#include <asm/lppaca.h>
27#endif
28
29static DEFINE_PER_CPU(struct cpu, cpu_devices);
30
31
32
33
34
35#ifdef CONFIG_PPC64
36
37
38static DEFINE_PER_CPU(long, smt_snooze_delay) = { 100 };
39
40static ssize_t store_smt_snooze_delay(struct device *dev,
41 struct device_attribute *attr,
42 const char *buf,
43 size_t count)
44{
45 struct cpu *cpu = container_of(dev, struct cpu, dev);
46 ssize_t ret;
47 long snooze;
48
49 ret = sscanf(buf, "%ld", &snooze);
50 if (ret != 1)
51 return -EINVAL;
52
53 per_cpu(smt_snooze_delay, cpu->dev.id) = snooze;
54 return count;
55}
56
57static ssize_t show_smt_snooze_delay(struct device *dev,
58 struct device_attribute *attr,
59 char *buf)
60{
61 struct cpu *cpu = container_of(dev, struct cpu, dev);
62
63 return sprintf(buf, "%ld\n", per_cpu(smt_snooze_delay, cpu->dev.id));
64}
65
66static DEVICE_ATTR(smt_snooze_delay, 0644, show_smt_snooze_delay,
67 store_smt_snooze_delay);
68
69static int __init setup_smt_snooze_delay(char *str)
70{
71 unsigned int cpu;
72 long snooze;
73
74 if (!cpu_has_feature(CPU_FTR_SMT))
75 return 1;
76
77 snooze = simple_strtol(str, NULL, 10);
78 for_each_possible_cpu(cpu)
79 per_cpu(smt_snooze_delay, cpu) = snooze;
80
81 return 1;
82}
83__setup("smt-snooze-delay=", setup_smt_snooze_delay);
84
85#endif
86
87#ifdef CONFIG_PPC_FSL_BOOK3E
88#define MAX_BIT 63
89
90static u64 pw20_wt;
91static u64 altivec_idle_wt;
92
93static unsigned int get_idle_ticks_bit(u64 ns)
94{
95 u64 cycle;
96
97 if (ns >= 10000)
98 cycle = div_u64(ns + 500, 1000) * tb_ticks_per_usec;
99 else
100 cycle = div_u64(ns * tb_ticks_per_usec, 1000);
101
102 if (!cycle)
103 return 0;
104
105 return ilog2(cycle);
106}
107
108static void do_show_pwrmgtcr0(void *val)
109{
110 u32 *value = val;
111
112 *value = mfspr(SPRN_PWRMGTCR0);
113}
114
115static ssize_t show_pw20_state(struct device *dev,
116 struct device_attribute *attr, char *buf)
117{
118 u32 value;
119 unsigned int cpu = dev->id;
120
121 smp_call_function_single(cpu, do_show_pwrmgtcr0, &value, 1);
122
123 value &= PWRMGTCR0_PW20_WAIT;
124
125 return sprintf(buf, "%u\n", value ? 1 : 0);
126}
127
128static void do_store_pw20_state(void *val)
129{
130 u32 *value = val;
131 u32 pw20_state;
132
133 pw20_state = mfspr(SPRN_PWRMGTCR0);
134
135 if (*value)
136 pw20_state |= PWRMGTCR0_PW20_WAIT;
137 else
138 pw20_state &= ~PWRMGTCR0_PW20_WAIT;
139
140 mtspr(SPRN_PWRMGTCR0, pw20_state);
141}
142
143static ssize_t store_pw20_state(struct device *dev,
144 struct device_attribute *attr,
145 const char *buf, size_t count)
146{
147 u32 value;
148 unsigned int cpu = dev->id;
149
150 if (kstrtou32(buf, 0, &value))
151 return -EINVAL;
152
153 if (value > 1)
154 return -EINVAL;
155
156 smp_call_function_single(cpu, do_store_pw20_state, &value, 1);
157
158 return count;
159}
160
161static ssize_t show_pw20_wait_time(struct device *dev,
162 struct device_attribute *attr, char *buf)
163{
164 u32 value;
165 u64 tb_cycle = 1;
166 u64 time;
167
168 unsigned int cpu = dev->id;
169
170 if (!pw20_wt) {
171 smp_call_function_single(cpu, do_show_pwrmgtcr0, &value, 1);
172 value = (value & PWRMGTCR0_PW20_ENT) >>
173 PWRMGTCR0_PW20_ENT_SHIFT;
174
175 tb_cycle = (tb_cycle << (MAX_BIT - value + 1));
176
177 if (tb_ticks_per_usec > 1000) {
178 time = div_u64(tb_cycle, tb_ticks_per_usec / 1000);
179 } else {
180 u32 rem_us;
181
182 time = div_u64_rem(tb_cycle, tb_ticks_per_usec,
183 &rem_us);
184 time = time * 1000 + rem_us * 1000 / tb_ticks_per_usec;
185 }
186 } else {
187 time = pw20_wt;
188 }
189
190 return sprintf(buf, "%llu\n", time > 0 ? time : 0);
191}
192
193static void set_pw20_wait_entry_bit(void *val)
194{
195 u32 *value = val;
196 u32 pw20_idle;
197
198 pw20_idle = mfspr(SPRN_PWRMGTCR0);
199
200
201
202 pw20_idle &= ~PWRMGTCR0_PW20_ENT;
203
204
205 pw20_idle |= ((MAX_BIT - *value) << PWRMGTCR0_PW20_ENT_SHIFT);
206
207 mtspr(SPRN_PWRMGTCR0, pw20_idle);
208}
209
210static ssize_t store_pw20_wait_time(struct device *dev,
211 struct device_attribute *attr,
212 const char *buf, size_t count)
213{
214 u32 entry_bit;
215 u64 value;
216
217 unsigned int cpu = dev->id;
218
219 if (kstrtou64(buf, 0, &value))
220 return -EINVAL;
221
222 if (!value)
223 return -EINVAL;
224
225 entry_bit = get_idle_ticks_bit(value);
226 if (entry_bit > MAX_BIT)
227 return -EINVAL;
228
229 pw20_wt = value;
230
231 smp_call_function_single(cpu, set_pw20_wait_entry_bit,
232 &entry_bit, 1);
233
234 return count;
235}
236
237static ssize_t show_altivec_idle(struct device *dev,
238 struct device_attribute *attr, char *buf)
239{
240 u32 value;
241 unsigned int cpu = dev->id;
242
243 smp_call_function_single(cpu, do_show_pwrmgtcr0, &value, 1);
244
245 value &= PWRMGTCR0_AV_IDLE_PD_EN;
246
247 return sprintf(buf, "%u\n", value ? 1 : 0);
248}
249
250static void do_store_altivec_idle(void *val)
251{
252 u32 *value = val;
253 u32 altivec_idle;
254
255 altivec_idle = mfspr(SPRN_PWRMGTCR0);
256
257 if (*value)
258 altivec_idle |= PWRMGTCR0_AV_IDLE_PD_EN;
259 else
260 altivec_idle &= ~PWRMGTCR0_AV_IDLE_PD_EN;
261
262 mtspr(SPRN_PWRMGTCR0, altivec_idle);
263}
264
265static ssize_t store_altivec_idle(struct device *dev,
266 struct device_attribute *attr,
267 const char *buf, size_t count)
268{
269 u32 value;
270 unsigned int cpu = dev->id;
271
272 if (kstrtou32(buf, 0, &value))
273 return -EINVAL;
274
275 if (value > 1)
276 return -EINVAL;
277
278 smp_call_function_single(cpu, do_store_altivec_idle, &value, 1);
279
280 return count;
281}
282
283static ssize_t show_altivec_idle_wait_time(struct device *dev,
284 struct device_attribute *attr, char *buf)
285{
286 u32 value;
287 u64 tb_cycle = 1;
288 u64 time;
289
290 unsigned int cpu = dev->id;
291
292 if (!altivec_idle_wt) {
293 smp_call_function_single(cpu, do_show_pwrmgtcr0, &value, 1);
294 value = (value & PWRMGTCR0_AV_IDLE_CNT) >>
295 PWRMGTCR0_AV_IDLE_CNT_SHIFT;
296
297 tb_cycle = (tb_cycle << (MAX_BIT - value + 1));
298
299 if (tb_ticks_per_usec > 1000) {
300 time = div_u64(tb_cycle, tb_ticks_per_usec / 1000);
301 } else {
302 u32 rem_us;
303
304 time = div_u64_rem(tb_cycle, tb_ticks_per_usec,
305 &rem_us);
306 time = time * 1000 + rem_us * 1000 / tb_ticks_per_usec;
307 }
308 } else {
309 time = altivec_idle_wt;
310 }
311
312 return sprintf(buf, "%llu\n", time > 0 ? time : 0);
313}
314
315static void set_altivec_idle_wait_entry_bit(void *val)
316{
317 u32 *value = val;
318 u32 altivec_idle;
319
320 altivec_idle = mfspr(SPRN_PWRMGTCR0);
321
322
323
324 altivec_idle &= ~PWRMGTCR0_AV_IDLE_CNT;
325
326
327 altivec_idle |= ((MAX_BIT - *value) << PWRMGTCR0_AV_IDLE_CNT_SHIFT);
328
329 mtspr(SPRN_PWRMGTCR0, altivec_idle);
330}
331
332static ssize_t store_altivec_idle_wait_time(struct device *dev,
333 struct device_attribute *attr,
334 const char *buf, size_t count)
335{
336 u32 entry_bit;
337 u64 value;
338
339 unsigned int cpu = dev->id;
340
341 if (kstrtou64(buf, 0, &value))
342 return -EINVAL;
343
344 if (!value)
345 return -EINVAL;
346
347 entry_bit = get_idle_ticks_bit(value);
348 if (entry_bit > MAX_BIT)
349 return -EINVAL;
350
351 altivec_idle_wt = value;
352
353 smp_call_function_single(cpu, set_altivec_idle_wait_entry_bit,
354 &entry_bit, 1);
355
356 return count;
357}
358
359
360
361
362
363static DEVICE_ATTR(pw20_state, 0600, show_pw20_state, store_pw20_state);
364static DEVICE_ATTR(altivec_idle, 0600, show_altivec_idle, store_altivec_idle);
365
366
367
368
369
370
371
372
373
374
375
376
377static DEVICE_ATTR(pw20_wait_time, 0600,
378 show_pw20_wait_time,
379 store_pw20_wait_time);
380static DEVICE_ATTR(altivec_idle_wait_time, 0600,
381 show_altivec_idle_wait_time,
382 store_altivec_idle_wait_time);
383#endif
384
385
386
387
388
389
390static DEFINE_PER_CPU(char, pmcs_enabled);
391
392void ppc_enable_pmcs(void)
393{
394 ppc_set_pmu_inuse(1);
395
396
397 if (__this_cpu_read(pmcs_enabled))
398 return;
399
400 __this_cpu_write(pmcs_enabled, 1);
401
402 if (ppc_md.enable_pmcs)
403 ppc_md.enable_pmcs();
404}
405EXPORT_SYMBOL(ppc_enable_pmcs);
406
407#define __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, EXTRA) \
408static void read_##NAME(void *val) \
409{ \
410 *(unsigned long *)val = mfspr(ADDRESS); \
411} \
412static void write_##NAME(void *val) \
413{ \
414 EXTRA; \
415 mtspr(ADDRESS, *(unsigned long *)val); \
416}
417
418#define __SYSFS_SPRSETUP_SHOW_STORE(NAME) \
419static ssize_t show_##NAME(struct device *dev, \
420 struct device_attribute *attr, \
421 char *buf) \
422{ \
423 struct cpu *cpu = container_of(dev, struct cpu, dev); \
424 unsigned long val; \
425 smp_call_function_single(cpu->dev.id, read_##NAME, &val, 1); \
426 return sprintf(buf, "%lx\n", val); \
427} \
428static ssize_t __used \
429 store_##NAME(struct device *dev, struct device_attribute *attr, \
430 const char *buf, size_t count) \
431{ \
432 struct cpu *cpu = container_of(dev, struct cpu, dev); \
433 unsigned long val; \
434 int ret = sscanf(buf, "%lx", &val); \
435 if (ret != 1) \
436 return -EINVAL; \
437 smp_call_function_single(cpu->dev.id, write_##NAME, &val, 1); \
438 return count; \
439}
440
441#define SYSFS_PMCSETUP(NAME, ADDRESS) \
442 __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, ppc_enable_pmcs()) \
443 __SYSFS_SPRSETUP_SHOW_STORE(NAME)
444#define SYSFS_SPRSETUP(NAME, ADDRESS) \
445 __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, ) \
446 __SYSFS_SPRSETUP_SHOW_STORE(NAME)
447
448#define SYSFS_SPRSETUP_SHOW_STORE(NAME) \
449 __SYSFS_SPRSETUP_SHOW_STORE(NAME)
450
451
452
453
454
455#if defined(CONFIG_PPC64)
456#define HAS_PPC_PMC_CLASSIC 1
457#define HAS_PPC_PMC_IBM 1
458#define HAS_PPC_PMC_PA6T 1
459#elif defined(CONFIG_6xx)
460#define HAS_PPC_PMC_CLASSIC 1
461#define HAS_PPC_PMC_IBM 1
462#define HAS_PPC_PMC_G4 1
463#endif
464
465
466#ifdef HAS_PPC_PMC_CLASSIC
467SYSFS_PMCSETUP(mmcr0, SPRN_MMCR0);
468SYSFS_PMCSETUP(mmcr1, SPRN_MMCR1);
469SYSFS_PMCSETUP(pmc1, SPRN_PMC1);
470SYSFS_PMCSETUP(pmc2, SPRN_PMC2);
471SYSFS_PMCSETUP(pmc3, SPRN_PMC3);
472SYSFS_PMCSETUP(pmc4, SPRN_PMC4);
473SYSFS_PMCSETUP(pmc5, SPRN_PMC5);
474SYSFS_PMCSETUP(pmc6, SPRN_PMC6);
475
476#ifdef HAS_PPC_PMC_G4
477SYSFS_PMCSETUP(mmcr2, SPRN_MMCR2);
478#endif
479
480#ifdef CONFIG_PPC64
481SYSFS_PMCSETUP(pmc7, SPRN_PMC7);
482SYSFS_PMCSETUP(pmc8, SPRN_PMC8);
483
484SYSFS_PMCSETUP(mmcra, SPRN_MMCRA);
485SYSFS_SPRSETUP(purr, SPRN_PURR);
486SYSFS_SPRSETUP(spurr, SPRN_SPURR);
487SYSFS_SPRSETUP(pir, SPRN_PIR);
488SYSFS_SPRSETUP(tscr, SPRN_TSCR);
489
490
491
492
493
494
495static DEVICE_ATTR(mmcra, 0600, show_mmcra, store_mmcra);
496static DEVICE_ATTR(spurr, 0400, show_spurr, NULL);
497static DEVICE_ATTR(purr, 0400, show_purr, store_purr);
498static DEVICE_ATTR(pir, 0400, show_pir, NULL);
499static DEVICE_ATTR(tscr, 0600, show_tscr, store_tscr);
500
501
502
503
504
505
506
507static unsigned long dscr_default;
508
509
510
511
512
513
514
515
516static void read_dscr(void *val)
517{
518 *(unsigned long *)val = get_paca()->dscr_default;
519}
520
521
522
523
524
525
526
527
528
529static void write_dscr(void *val)
530{
531 get_paca()->dscr_default = *(unsigned long *)val;
532 if (!current->thread.dscr_inherit) {
533 current->thread.dscr = *(unsigned long *)val;
534 mtspr(SPRN_DSCR, *(unsigned long *)val);
535 }
536}
537
538SYSFS_SPRSETUP_SHOW_STORE(dscr);
539static DEVICE_ATTR(dscr, 0600, show_dscr, store_dscr);
540
541static void add_write_permission_dev_attr(struct device_attribute *attr)
542{
543 attr->attr.mode |= 0200;
544}
545
546
547
548
549
550
551
552
553
554static ssize_t show_dscr_default(struct device *dev,
555 struct device_attribute *attr, char *buf)
556{
557 return sprintf(buf, "%lx\n", dscr_default);
558}
559
560
561
562
563
564
565
566
567
568
569static ssize_t __used store_dscr_default(struct device *dev,
570 struct device_attribute *attr, const char *buf,
571 size_t count)
572{
573 unsigned long val;
574 int ret = 0;
575
576 ret = sscanf(buf, "%lx", &val);
577 if (ret != 1)
578 return -EINVAL;
579 dscr_default = val;
580
581 on_each_cpu(write_dscr, &val, 1);
582
583 return count;
584}
585
586static DEVICE_ATTR(dscr_default, 0600,
587 show_dscr_default, store_dscr_default);
588
589static void sysfs_create_dscr_default(void)
590{
591 int err = 0;
592 if (cpu_has_feature(CPU_FTR_DSCR))
593 err = device_create_file(cpu_subsys.dev_root, &dev_attr_dscr_default);
594}
595
596void __init record_spr_defaults(void)
597{
598 int cpu;
599
600 if (cpu_has_feature(CPU_FTR_DSCR)) {
601 dscr_default = mfspr(SPRN_DSCR);
602 for (cpu = 0; cpu < nr_cpu_ids; cpu++)
603 paca[cpu].dscr_default = dscr_default;
604 }
605}
606#endif
607
608#ifdef HAS_PPC_PMC_PA6T
609SYSFS_PMCSETUP(pa6t_pmc0, SPRN_PA6T_PMC0);
610SYSFS_PMCSETUP(pa6t_pmc1, SPRN_PA6T_PMC1);
611SYSFS_PMCSETUP(pa6t_pmc2, SPRN_PA6T_PMC2);
612SYSFS_PMCSETUP(pa6t_pmc3, SPRN_PA6T_PMC3);
613SYSFS_PMCSETUP(pa6t_pmc4, SPRN_PA6T_PMC4);
614SYSFS_PMCSETUP(pa6t_pmc5, SPRN_PA6T_PMC5);
615#ifdef CONFIG_DEBUG_KERNEL
616SYSFS_SPRSETUP(hid0, SPRN_HID0);
617SYSFS_SPRSETUP(hid1, SPRN_HID1);
618SYSFS_SPRSETUP(hid4, SPRN_HID4);
619SYSFS_SPRSETUP(hid5, SPRN_HID5);
620SYSFS_SPRSETUP(ima0, SPRN_PA6T_IMA0);
621SYSFS_SPRSETUP(ima1, SPRN_PA6T_IMA1);
622SYSFS_SPRSETUP(ima2, SPRN_PA6T_IMA2);
623SYSFS_SPRSETUP(ima3, SPRN_PA6T_IMA3);
624SYSFS_SPRSETUP(ima4, SPRN_PA6T_IMA4);
625SYSFS_SPRSETUP(ima5, SPRN_PA6T_IMA5);
626SYSFS_SPRSETUP(ima6, SPRN_PA6T_IMA6);
627SYSFS_SPRSETUP(ima7, SPRN_PA6T_IMA7);
628SYSFS_SPRSETUP(ima8, SPRN_PA6T_IMA8);
629SYSFS_SPRSETUP(ima9, SPRN_PA6T_IMA9);
630SYSFS_SPRSETUP(imaat, SPRN_PA6T_IMAAT);
631SYSFS_SPRSETUP(btcr, SPRN_PA6T_BTCR);
632SYSFS_SPRSETUP(pccr, SPRN_PA6T_PCCR);
633SYSFS_SPRSETUP(rpccr, SPRN_PA6T_RPCCR);
634SYSFS_SPRSETUP(der, SPRN_PA6T_DER);
635SYSFS_SPRSETUP(mer, SPRN_PA6T_MER);
636SYSFS_SPRSETUP(ber, SPRN_PA6T_BER);
637SYSFS_SPRSETUP(ier, SPRN_PA6T_IER);
638SYSFS_SPRSETUP(sier, SPRN_PA6T_SIER);
639SYSFS_SPRSETUP(siar, SPRN_PA6T_SIAR);
640SYSFS_SPRSETUP(tsr0, SPRN_PA6T_TSR0);
641SYSFS_SPRSETUP(tsr1, SPRN_PA6T_TSR1);
642SYSFS_SPRSETUP(tsr2, SPRN_PA6T_TSR2);
643SYSFS_SPRSETUP(tsr3, SPRN_PA6T_TSR3);
644#endif
645#endif
646
647#ifdef HAS_PPC_PMC_IBM
648static struct device_attribute ibm_common_attrs[] = {
649 __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
650 __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
651};
652#endif
653
654#ifdef HAS_PPC_PMC_G4
655static struct device_attribute g4_common_attrs[] = {
656 __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
657 __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
658 __ATTR(mmcr2, 0600, show_mmcr2, store_mmcr2),
659};
660#endif
661
662static struct device_attribute classic_pmc_attrs[] = {
663 __ATTR(pmc1, 0600, show_pmc1, store_pmc1),
664 __ATTR(pmc2, 0600, show_pmc2, store_pmc2),
665 __ATTR(pmc3, 0600, show_pmc3, store_pmc3),
666 __ATTR(pmc4, 0600, show_pmc4, store_pmc4),
667 __ATTR(pmc5, 0600, show_pmc5, store_pmc5),
668 __ATTR(pmc6, 0600, show_pmc6, store_pmc6),
669#ifdef CONFIG_PPC64
670 __ATTR(pmc7, 0600, show_pmc7, store_pmc7),
671 __ATTR(pmc8, 0600, show_pmc8, store_pmc8),
672#endif
673};
674
675#ifdef HAS_PPC_PMC_PA6T
676static struct device_attribute pa6t_attrs[] = {
677 __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
678 __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
679 __ATTR(pmc0, 0600, show_pa6t_pmc0, store_pa6t_pmc0),
680 __ATTR(pmc1, 0600, show_pa6t_pmc1, store_pa6t_pmc1),
681 __ATTR(pmc2, 0600, show_pa6t_pmc2, store_pa6t_pmc2),
682 __ATTR(pmc3, 0600, show_pa6t_pmc3, store_pa6t_pmc3),
683 __ATTR(pmc4, 0600, show_pa6t_pmc4, store_pa6t_pmc4),
684 __ATTR(pmc5, 0600, show_pa6t_pmc5, store_pa6t_pmc5),
685#ifdef CONFIG_DEBUG_KERNEL
686 __ATTR(hid0, 0600, show_hid0, store_hid0),
687 __ATTR(hid1, 0600, show_hid1, store_hid1),
688 __ATTR(hid4, 0600, show_hid4, store_hid4),
689 __ATTR(hid5, 0600, show_hid5, store_hid5),
690 __ATTR(ima0, 0600, show_ima0, store_ima0),
691 __ATTR(ima1, 0600, show_ima1, store_ima1),
692 __ATTR(ima2, 0600, show_ima2, store_ima2),
693 __ATTR(ima3, 0600, show_ima3, store_ima3),
694 __ATTR(ima4, 0600, show_ima4, store_ima4),
695 __ATTR(ima5, 0600, show_ima5, store_ima5),
696 __ATTR(ima6, 0600, show_ima6, store_ima6),
697 __ATTR(ima7, 0600, show_ima7, store_ima7),
698 __ATTR(ima8, 0600, show_ima8, store_ima8),
699 __ATTR(ima9, 0600, show_ima9, store_ima9),
700 __ATTR(imaat, 0600, show_imaat, store_imaat),
701 __ATTR(btcr, 0600, show_btcr, store_btcr),
702 __ATTR(pccr, 0600, show_pccr, store_pccr),
703 __ATTR(rpccr, 0600, show_rpccr, store_rpccr),
704 __ATTR(der, 0600, show_der, store_der),
705 __ATTR(mer, 0600, show_mer, store_mer),
706 __ATTR(ber, 0600, show_ber, store_ber),
707 __ATTR(ier, 0600, show_ier, store_ier),
708 __ATTR(sier, 0600, show_sier, store_sier),
709 __ATTR(siar, 0600, show_siar, store_siar),
710 __ATTR(tsr0, 0600, show_tsr0, store_tsr0),
711 __ATTR(tsr1, 0600, show_tsr1, store_tsr1),
712 __ATTR(tsr2, 0600, show_tsr2, store_tsr2),
713 __ATTR(tsr3, 0600, show_tsr3, store_tsr3),
714#endif
715};
716#endif
717#endif
718
719static int register_cpu_online(unsigned int cpu)
720{
721 struct cpu *c = &per_cpu(cpu_devices, cpu);
722 struct device *s = &c->dev;
723 struct device_attribute *attrs, *pmc_attrs;
724 int i, nattrs;
725
726
727 if (!s->of_node)
728 s->of_node = of_get_cpu_node(cpu, NULL);
729
730#ifdef CONFIG_PPC64
731 if (cpu_has_feature(CPU_FTR_SMT))
732 device_create_file(s, &dev_attr_smt_snooze_delay);
733#endif
734
735
736 switch (cur_cpu_spec->pmc_type) {
737#ifdef HAS_PPC_PMC_IBM
738 case PPC_PMC_IBM:
739 attrs = ibm_common_attrs;
740 nattrs = sizeof(ibm_common_attrs) / sizeof(struct device_attribute);
741 pmc_attrs = classic_pmc_attrs;
742 break;
743#endif
744#ifdef HAS_PPC_PMC_G4
745 case PPC_PMC_G4:
746 attrs = g4_common_attrs;
747 nattrs = sizeof(g4_common_attrs) / sizeof(struct device_attribute);
748 pmc_attrs = classic_pmc_attrs;
749 break;
750#endif
751#ifdef HAS_PPC_PMC_PA6T
752 case PPC_PMC_PA6T:
753
754 attrs = pa6t_attrs;
755 nattrs = sizeof(pa6t_attrs) / sizeof(struct device_attribute);
756 pmc_attrs = NULL;
757 break;
758#endif
759 default:
760 attrs = NULL;
761 nattrs = 0;
762 pmc_attrs = NULL;
763 }
764
765 for (i = 0; i < nattrs; i++)
766 device_create_file(s, &attrs[i]);
767
768 if (pmc_attrs)
769 for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
770 device_create_file(s, &pmc_attrs[i]);
771
772#ifdef CONFIG_PPC64
773 if (cpu_has_feature(CPU_FTR_MMCRA))
774 device_create_file(s, &dev_attr_mmcra);
775
776 if (cpu_has_feature(CPU_FTR_PURR)) {
777 if (!firmware_has_feature(FW_FEATURE_LPAR))
778 add_write_permission_dev_attr(&dev_attr_purr);
779 device_create_file(s, &dev_attr_purr);
780 }
781
782 if (cpu_has_feature(CPU_FTR_SPURR))
783 device_create_file(s, &dev_attr_spurr);
784
785 if (cpu_has_feature(CPU_FTR_DSCR))
786 device_create_file(s, &dev_attr_dscr);
787
788 if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))
789 device_create_file(s, &dev_attr_pir);
790
791 if (cpu_has_feature(CPU_FTR_ARCH_206) &&
792 !firmware_has_feature(FW_FEATURE_LPAR))
793 device_create_file(s, &dev_attr_tscr);
794#endif
795
796#ifdef CONFIG_PPC_FSL_BOOK3E
797 if (PVR_VER(cur_cpu_spec->pvr_value) == PVR_VER_E6500) {
798 device_create_file(s, &dev_attr_pw20_state);
799 device_create_file(s, &dev_attr_pw20_wait_time);
800
801 device_create_file(s, &dev_attr_altivec_idle);
802 device_create_file(s, &dev_attr_altivec_idle_wait_time);
803 }
804#endif
805 cacheinfo_cpu_online(cpu);
806 return 0;
807}
808
809#ifdef CONFIG_HOTPLUG_CPU
810static int unregister_cpu_online(unsigned int cpu)
811{
812 struct cpu *c = &per_cpu(cpu_devices, cpu);
813 struct device *s = &c->dev;
814 struct device_attribute *attrs, *pmc_attrs;
815 int i, nattrs;
816
817 BUG_ON(!c->hotpluggable);
818
819#ifdef CONFIG_PPC64
820 if (cpu_has_feature(CPU_FTR_SMT))
821 device_remove_file(s, &dev_attr_smt_snooze_delay);
822#endif
823
824
825 switch (cur_cpu_spec->pmc_type) {
826#ifdef HAS_PPC_PMC_IBM
827 case PPC_PMC_IBM:
828 attrs = ibm_common_attrs;
829 nattrs = sizeof(ibm_common_attrs) / sizeof(struct device_attribute);
830 pmc_attrs = classic_pmc_attrs;
831 break;
832#endif
833#ifdef HAS_PPC_PMC_G4
834 case PPC_PMC_G4:
835 attrs = g4_common_attrs;
836 nattrs = sizeof(g4_common_attrs) / sizeof(struct device_attribute);
837 pmc_attrs = classic_pmc_attrs;
838 break;
839#endif
840#ifdef HAS_PPC_PMC_PA6T
841 case PPC_PMC_PA6T:
842
843 attrs = pa6t_attrs;
844 nattrs = sizeof(pa6t_attrs) / sizeof(struct device_attribute);
845 pmc_attrs = NULL;
846 break;
847#endif
848 default:
849 attrs = NULL;
850 nattrs = 0;
851 pmc_attrs = NULL;
852 }
853
854 for (i = 0; i < nattrs; i++)
855 device_remove_file(s, &attrs[i]);
856
857 if (pmc_attrs)
858 for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
859 device_remove_file(s, &pmc_attrs[i]);
860
861#ifdef CONFIG_PPC64
862 if (cpu_has_feature(CPU_FTR_MMCRA))
863 device_remove_file(s, &dev_attr_mmcra);
864
865 if (cpu_has_feature(CPU_FTR_PURR))
866 device_remove_file(s, &dev_attr_purr);
867
868 if (cpu_has_feature(CPU_FTR_SPURR))
869 device_remove_file(s, &dev_attr_spurr);
870
871 if (cpu_has_feature(CPU_FTR_DSCR))
872 device_remove_file(s, &dev_attr_dscr);
873
874 if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))
875 device_remove_file(s, &dev_attr_pir);
876
877 if (cpu_has_feature(CPU_FTR_ARCH_206) &&
878 !firmware_has_feature(FW_FEATURE_LPAR))
879 device_remove_file(s, &dev_attr_tscr);
880#endif
881
882#ifdef CONFIG_PPC_FSL_BOOK3E
883 if (PVR_VER(cur_cpu_spec->pvr_value) == PVR_VER_E6500) {
884 device_remove_file(s, &dev_attr_pw20_state);
885 device_remove_file(s, &dev_attr_pw20_wait_time);
886
887 device_remove_file(s, &dev_attr_altivec_idle);
888 device_remove_file(s, &dev_attr_altivec_idle_wait_time);
889 }
890#endif
891 cacheinfo_cpu_offline(cpu);
892 of_node_put(s->of_node);
893 s->of_node = NULL;
894 return 0;
895}
896#else
897#define unregister_cpu_online NULL
898#endif
899
900#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
901ssize_t arch_cpu_probe(const char *buf, size_t count)
902{
903 if (ppc_md.cpu_probe)
904 return ppc_md.cpu_probe(buf, count);
905
906 return -EINVAL;
907}
908
909ssize_t arch_cpu_release(const char *buf, size_t count)
910{
911 if (ppc_md.cpu_release)
912 return ppc_md.cpu_release(buf, count);
913
914 return -EINVAL;
915}
916#endif
917
918static DEFINE_MUTEX(cpu_mutex);
919
920int cpu_add_dev_attr(struct device_attribute *attr)
921{
922 int cpu;
923
924 mutex_lock(&cpu_mutex);
925
926 for_each_possible_cpu(cpu) {
927 device_create_file(get_cpu_device(cpu), attr);
928 }
929
930 mutex_unlock(&cpu_mutex);
931 return 0;
932}
933EXPORT_SYMBOL_GPL(cpu_add_dev_attr);
934
935int cpu_add_dev_attr_group(struct attribute_group *attrs)
936{
937 int cpu;
938 struct device *dev;
939 int ret;
940
941 mutex_lock(&cpu_mutex);
942
943 for_each_possible_cpu(cpu) {
944 dev = get_cpu_device(cpu);
945 ret = sysfs_create_group(&dev->kobj, attrs);
946 WARN_ON(ret != 0);
947 }
948
949 mutex_unlock(&cpu_mutex);
950 return 0;
951}
952EXPORT_SYMBOL_GPL(cpu_add_dev_attr_group);
953
954
955void cpu_remove_dev_attr(struct device_attribute *attr)
956{
957 int cpu;
958
959 mutex_lock(&cpu_mutex);
960
961 for_each_possible_cpu(cpu) {
962 device_remove_file(get_cpu_device(cpu), attr);
963 }
964
965 mutex_unlock(&cpu_mutex);
966}
967EXPORT_SYMBOL_GPL(cpu_remove_dev_attr);
968
969void cpu_remove_dev_attr_group(struct attribute_group *attrs)
970{
971 int cpu;
972 struct device *dev;
973
974 mutex_lock(&cpu_mutex);
975
976 for_each_possible_cpu(cpu) {
977 dev = get_cpu_device(cpu);
978 sysfs_remove_group(&dev->kobj, attrs);
979 }
980
981 mutex_unlock(&cpu_mutex);
982}
983EXPORT_SYMBOL_GPL(cpu_remove_dev_attr_group);
984
985
986
987
988#ifdef CONFIG_NUMA
989static void register_nodes(void)
990{
991 int i;
992
993 for (i = 0; i < MAX_NUMNODES; i++)
994 register_one_node(i);
995}
996
997int sysfs_add_device_to_node(struct device *dev, int nid)
998{
999 struct node *node = node_devices[nid];
1000 return sysfs_create_link(&node->dev.kobj, &dev->kobj,
1001 kobject_name(&dev->kobj));
1002}
1003EXPORT_SYMBOL_GPL(sysfs_add_device_to_node);
1004
1005void sysfs_remove_device_from_node(struct device *dev, int nid)
1006{
1007 struct node *node = node_devices[nid];
1008 sysfs_remove_link(&node->dev.kobj, kobject_name(&dev->kobj));
1009}
1010EXPORT_SYMBOL_GPL(sysfs_remove_device_from_node);
1011
1012#else
1013static void register_nodes(void)
1014{
1015 return;
1016}
1017
1018#endif
1019
1020
1021static ssize_t show_physical_id(struct device *dev,
1022 struct device_attribute *attr, char *buf)
1023{
1024 struct cpu *cpu = container_of(dev, struct cpu, dev);
1025
1026 return sprintf(buf, "%d\n", get_hard_smp_processor_id(cpu->dev.id));
1027}
1028static DEVICE_ATTR(physical_id, 0444, show_physical_id, NULL);
1029
1030static int __init topology_init(void)
1031{
1032 int cpu, r;
1033
1034 register_nodes();
1035
1036 for_each_possible_cpu(cpu) {
1037 struct cpu *c = &per_cpu(cpu_devices, cpu);
1038
1039
1040
1041
1042
1043
1044
1045
1046 if (ppc_md.cpu_die)
1047 c->hotpluggable = 1;
1048
1049 if (cpu_online(cpu) || c->hotpluggable) {
1050 register_cpu(c, cpu);
1051
1052 device_create_file(&c->dev, &dev_attr_physical_id);
1053 }
1054 }
1055 r = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "powerpc/topology:online",
1056 register_cpu_online, unregister_cpu_online);
1057 WARN_ON(r < 0);
1058#ifdef CONFIG_PPC64
1059 sysfs_create_dscr_default();
1060#endif
1061
1062 return 0;
1063}
1064subsys_initcall(topology_init);
1065