projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
xen: fix build breakage in xen-selfballoon.c caused by sysdev conversion
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / powerpc / kernel / sysfs.c
CommitLineData
1da177e4
LT		 1#include <linux/sysdev.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>
4b16f8e2 7#include <linux/export.h>
1da177e4
LT		 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>
1ababe11 15#include <asm/firmware.h>
1da177e4
LT		 16#include <asm/hvcall.h>
17#include <asm/prom.h>
1da177e4 18#include <asm/machdep.h>
2249ca9d 19#include <asm/smp.h>
a6dbf93a 20#include <asm/pmc.h>
1da177e4 21
93197a36
NL		 22#include "cacheinfo.h"
23
b950bdd0
BH		 24#ifdef CONFIG_PPC64
25#include <asm/paca.h>
26#include <asm/lppaca.h>
27#endif
28
1da177e4
LT		 29static DEFINE_PER_CPU(struct cpu, cpu_devices);
30
b950bdd0
BH		 31/*
32 * SMT snooze delay stuff, 64-bit only for now
33 */
34
35#ifdef CONFIG_PPC64
1da177e4 36
0ddd3e7d 37/* Time in microseconds we delay before sleeping in the idle loop */
b878dc00 38DEFINE_PER_CPU(long, smt_snooze_delay) = { 100 };
1da177e4 39
4a0b2b4d
AK		 40static ssize_t store_smt_snooze_delay(struct sys_device *dev,
41 struct sysdev_attribute *attr,
42 const char *buf,
1da177e4
LT		 43 size_t count)
44{
45 struct cpu *cpu = container_of(dev, struct cpu, sysdev);
46 ssize_t ret;
b878dc00 47 long snooze;
1da177e4 48
b878dc00 49 ret = sscanf(buf, "%ld", &snooze);
1da177e4
LT		 50 if (ret != 1)
51 return -EINVAL;
52
53 per_cpu(smt_snooze_delay, cpu->sysdev.id) = snooze;
54
55 return count;
56}
57
4a0b2b4d
AK		 58static ssize_t show_smt_snooze_delay(struct sys_device *dev,
59 struct sysdev_attribute *attr,
60 char *buf)
1da177e4
LT		 61{
62 struct cpu *cpu = container_of(dev, struct cpu, sysdev);
63
b878dc00 64 return sprintf(buf, "%ld\n", per_cpu(smt_snooze_delay, cpu->sysdev.id));
1da177e4
LT		 65}
66
67static SYSDEV_ATTR(smt_snooze_delay, 0644, show_smt_snooze_delay,
68 store_smt_snooze_delay);
69
1da177e4
LT		 70static int __init setup_smt_snooze_delay(char *str)
71{
72 unsigned int cpu;
b878dc00 73 long snooze;
1da177e4
LT		 74
75 if (!cpu_has_feature(CPU_FTR_SMT))
76 return 1;
77
b878dc00
AB		 78 snooze = simple_strtol(str, NULL, 10);
79 for_each_possible_cpu(cpu)
80 per_cpu(smt_snooze_delay, cpu) = snooze;
1da177e4
LT		 81
82 return 1;
83}
84__setup("smt-snooze-delay=", setup_smt_snooze_delay);
85
b950bdd0 86#endif /* CONFIG_PPC64 */
180a3362 87
1da177e4
LT		 88/*
89 * Enabling PMCs will slow partition context switch times so we only do
90 * it the first time we write to the PMCs.
91 */
92
93static DEFINE_PER_CPU(char, pmcs_enabled);
94
b950bdd0 95void ppc_enable_pmcs(void)
1da177e4 96{
a6dbf93a
PM		 97 ppc_set_pmu_inuse(1);
98
1da177e4
LT		 99 /* Only need to enable them once */
100 if (__get_cpu_var(pmcs_enabled))
101 return;
102
103 __get_cpu_var(pmcs_enabled) = 1;
104
180a3362
ME		 105 if (ppc_md.enable_pmcs)
106 ppc_md.enable_pmcs();
1da177e4 107}
b950bdd0 108EXPORT_SYMBOL(ppc_enable_pmcs);
1da177e4 109
1da177e4 110#define SYSFS_PMCSETUP(NAME, ADDRESS) \
9a371934 111static void read_##NAME(void *val) \
1da177e4 112{ \
ec78c8ac 113 *(unsigned long *)val = mfspr(ADDRESS); \
1da177e4 114} \
ec78c8ac 115static void write_##NAME(void *val) \
1da177e4 116{ \
b950bdd0 117 ppc_enable_pmcs(); \
9a371934 118 mtspr(ADDRESS, *(unsigned long *)val); \
1da177e4 119} \
4a0b2b4d
AK		 120static ssize_t show_##NAME(struct sys_device *dev, \
121 struct sysdev_attribute *attr, \
122 char *buf) \
1da177e4
LT		 123{ \
124 struct cpu *cpu = container_of(dev, struct cpu, sysdev); \
9a371934
RR		 125 unsigned long val; \
126 smp_call_function_single(cpu->sysdev.id, read_##NAME, &val, 1); \
1da177e4
LT		 127 return sprintf(buf, "%lx\n", val); \
128} \
3ff6eecc 129static ssize_t __used \
4a0b2b4d
AK		 130 store_##NAME(struct sys_device *dev, struct sysdev_attribute *attr, \
131 const char *buf, size_t count) \
1da177e4
LT		 132{ \
133 struct cpu *cpu = container_of(dev, struct cpu, sysdev); \
134 unsigned long val; \
135 int ret = sscanf(buf, "%lx", &val); \
136 if (ret != 1) \
137 return -EINVAL; \
9a371934 138 smp_call_function_single(cpu->sysdev.id, write_##NAME, &val, 1); \
1da177e4
LT		 139 return count; \
140}
141
6529c13d
OJ		 142
143/* Let's define all possible registers, we'll only hook up the ones
144 * that are implemented on the current processor
145 */
146
33a7f122 147#if defined(CONFIG_PPC64)
b950bdd0
BH		 148#define HAS_PPC_PMC_CLASSIC 1
149#define HAS_PPC_PMC_IBM 1
150#define HAS_PPC_PMC_PA6T 1
33a7f122 151#elif defined(CONFIG_6xx)
b950bdd0
BH		 152#define HAS_PPC_PMC_CLASSIC 1
153#define HAS_PPC_PMC_IBM 1
154#define HAS_PPC_PMC_G4 1
155#endif
156
157
158#ifdef HAS_PPC_PMC_CLASSIC
1da177e4
LT		 159SYSFS_PMCSETUP(mmcr0, SPRN_MMCR0);
160SYSFS_PMCSETUP(mmcr1, SPRN_MMCR1);
1da177e4
LT		 161SYSFS_PMCSETUP(pmc1, SPRN_PMC1);
162SYSFS_PMCSETUP(pmc2, SPRN_PMC2);
163SYSFS_PMCSETUP(pmc3, SPRN_PMC3);
164SYSFS_PMCSETUP(pmc4, SPRN_PMC4);
165SYSFS_PMCSETUP(pmc5, SPRN_PMC5);
166SYSFS_PMCSETUP(pmc6, SPRN_PMC6);
b950bdd0
BH		 167
168#ifdef HAS_PPC_PMC_G4
169SYSFS_PMCSETUP(mmcr2, SPRN_MMCR2);
170#endif
171
172#ifdef CONFIG_PPC64
1da177e4
LT		 173SYSFS_PMCSETUP(pmc7, SPRN_PMC7);
174SYSFS_PMCSETUP(pmc8, SPRN_PMC8);
b950bdd0
BH		 175
176SYSFS_PMCSETUP(mmcra, SPRN_MMCRA);
1da177e4 177SYSFS_PMCSETUP(purr, SPRN_PURR);
f050982a 178SYSFS_PMCSETUP(spurr, SPRN_SPURR);
4c198557 179SYSFS_PMCSETUP(dscr, SPRN_DSCR);
1da177e4 180
b950bdd0
BH		 181static SYSDEV_ATTR(mmcra, 0600, show_mmcra, store_mmcra);
182static SYSDEV_ATTR(spurr, 0600, show_spurr, NULL);
183static SYSDEV_ATTR(dscr, 0600, show_dscr, store_dscr);
184static SYSDEV_ATTR(purr, 0600, show_purr, store_purr);
efcac658
AK		 185
186unsigned long dscr_default = 0;
187EXPORT_SYMBOL(dscr_default);
188
189static ssize_t show_dscr_default(struct sysdev_class *class,
190 struct sysdev_class_attribute *attr, char *buf)
191{
192 return sprintf(buf, "%lx\n", dscr_default);
193}
194
195static ssize_t __used store_dscr_default(struct sysdev_class *class,
196 struct sysdev_class_attribute *attr, const char *buf,
197 size_t count)
198{
199 unsigned long val;
200 int ret = 0;
201
202 ret = sscanf(buf, "%lx", &val);
203 if (ret != 1)
204 return -EINVAL;
205 dscr_default = val;
206
207 return count;
208}
209
210static SYSDEV_CLASS_ATTR(dscr_default, 0600,
211 show_dscr_default, store_dscr_default);
212
213static void sysfs_create_dscr_default(void)
214{
215 int err = 0;
216 if (cpu_has_feature(CPU_FTR_DSCR))
217 err = sysfs_create_file(&cpu_sysdev_class.kset.kobj,
218 &attr_dscr_default.attr);
219}
b950bdd0
BH		 220#endif /* CONFIG_PPC64 */
221
222#ifdef HAS_PPC_PMC_PA6T
25fc530e
OJ		 223SYSFS_PMCSETUP(pa6t_pmc0, SPRN_PA6T_PMC0);
224SYSFS_PMCSETUP(pa6t_pmc1, SPRN_PA6T_PMC1);
225SYSFS_PMCSETUP(pa6t_pmc2, SPRN_PA6T_PMC2);
226SYSFS_PMCSETUP(pa6t_pmc3, SPRN_PA6T_PMC3);
227SYSFS_PMCSETUP(pa6t_pmc4, SPRN_PA6T_PMC4);
228SYSFS_PMCSETUP(pa6t_pmc5, SPRN_PA6T_PMC5);
2e1957fd
OJ		 229#ifdef CONFIG_DEBUG_KERNEL
230SYSFS_PMCSETUP(hid0, SPRN_HID0);
231SYSFS_PMCSETUP(hid1, SPRN_HID1);
232SYSFS_PMCSETUP(hid4, SPRN_HID4);
233SYSFS_PMCSETUP(hid5, SPRN_HID5);
234SYSFS_PMCSETUP(ima0, SPRN_PA6T_IMA0);
235SYSFS_PMCSETUP(ima1, SPRN_PA6T_IMA1);
236SYSFS_PMCSETUP(ima2, SPRN_PA6T_IMA2);
237SYSFS_PMCSETUP(ima3, SPRN_PA6T_IMA3);
238SYSFS_PMCSETUP(ima4, SPRN_PA6T_IMA4);
239SYSFS_PMCSETUP(ima5, SPRN_PA6T_IMA5);
240SYSFS_PMCSETUP(ima6, SPRN_PA6T_IMA6);
241SYSFS_PMCSETUP(ima7, SPRN_PA6T_IMA7);
242SYSFS_PMCSETUP(ima8, SPRN_PA6T_IMA8);
243SYSFS_PMCSETUP(ima9, SPRN_PA6T_IMA9);
244SYSFS_PMCSETUP(imaat, SPRN_PA6T_IMAAT);
245SYSFS_PMCSETUP(btcr, SPRN_PA6T_BTCR);
246SYSFS_PMCSETUP(pccr, SPRN_PA6T_PCCR);
247SYSFS_PMCSETUP(rpccr, SPRN_PA6T_RPCCR);
248SYSFS_PMCSETUP(der, SPRN_PA6T_DER);
249SYSFS_PMCSETUP(mer, SPRN_PA6T_MER);
250SYSFS_PMCSETUP(ber, SPRN_PA6T_BER);
251SYSFS_PMCSETUP(ier, SPRN_PA6T_IER);
252SYSFS_PMCSETUP(sier, SPRN_PA6T_SIER);
253SYSFS_PMCSETUP(siar, SPRN_PA6T_SIAR);
254SYSFS_PMCSETUP(tsr0, SPRN_PA6T_TSR0);
255SYSFS_PMCSETUP(tsr1, SPRN_PA6T_TSR1);
256SYSFS_PMCSETUP(tsr2, SPRN_PA6T_TSR2);
257SYSFS_PMCSETUP(tsr3, SPRN_PA6T_TSR3);
258#endif /* CONFIG_DEBUG_KERNEL */
b950bdd0 259#endif /* HAS_PPC_PMC_PA6T */
6529c13d 260
b950bdd0 261#ifdef HAS_PPC_PMC_IBM
6529c13d
OJ		 262static struct sysdev_attribute ibm_common_attrs[] = {
263 _SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
264 _SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
265};
b950bdd0
BH		 266#endif /* HAS_PPC_PMC_G4 */
267
268#ifdef HAS_PPC_PMC_G4
269static struct sysdev_attribute g4_common_attrs[] = {
270 _SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
271 _SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
272 _SYSDEV_ATTR(mmcr2, 0600, show_mmcr2, store_mmcr2),
273};
274#endif /* HAS_PPC_PMC_G4 */
6529c13d 275
b950bdd0 276static struct sysdev_attribute classic_pmc_attrs[] = {
6529c13d
OJ		 277 _SYSDEV_ATTR(pmc1, 0600, show_pmc1, store_pmc1),
278 _SYSDEV_ATTR(pmc2, 0600, show_pmc2, store_pmc2),
279 _SYSDEV_ATTR(pmc3, 0600, show_pmc3, store_pmc3),
280 _SYSDEV_ATTR(pmc4, 0600, show_pmc4, store_pmc4),
281 _SYSDEV_ATTR(pmc5, 0600, show_pmc5, store_pmc5),
282 _SYSDEV_ATTR(pmc6, 0600, show_pmc6, store_pmc6),
b950bdd0 283#ifdef CONFIG_PPC64
6529c13d
OJ		 284 _SYSDEV_ATTR(pmc7, 0600, show_pmc7, store_pmc7),
285 _SYSDEV_ATTR(pmc8, 0600, show_pmc8, store_pmc8),
b950bdd0 286#endif
6529c13d
OJ		 287};
288
b950bdd0 289#ifdef HAS_PPC_PMC_PA6T
6529c13d
OJ		 290static struct sysdev_attribute pa6t_attrs[] = {
291 _SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
292 _SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
293 _SYSDEV_ATTR(pmc0, 0600, show_pa6t_pmc0, store_pa6t_pmc0),
294 _SYSDEV_ATTR(pmc1, 0600, show_pa6t_pmc1, store_pa6t_pmc1),
295 _SYSDEV_ATTR(pmc2, 0600, show_pa6t_pmc2, store_pa6t_pmc2),
296 _SYSDEV_ATTR(pmc3, 0600, show_pa6t_pmc3, store_pa6t_pmc3),
297 _SYSDEV_ATTR(pmc4, 0600, show_pa6t_pmc4, store_pa6t_pmc4),
298 _SYSDEV_ATTR(pmc5, 0600, show_pa6t_pmc5, store_pa6t_pmc5),
2e1957fd
OJ		 299#ifdef CONFIG_DEBUG_KERNEL
300 _SYSDEV_ATTR(hid0, 0600, show_hid0, store_hid0),
301 _SYSDEV_ATTR(hid1, 0600, show_hid1, store_hid1),
302 _SYSDEV_ATTR(hid4, 0600, show_hid4, store_hid4),
303 _SYSDEV_ATTR(hid5, 0600, show_hid5, store_hid5),
304 _SYSDEV_ATTR(ima0, 0600, show_ima0, store_ima0),
305 _SYSDEV_ATTR(ima1, 0600, show_ima1, store_ima1),
306 _SYSDEV_ATTR(ima2, 0600, show_ima2, store_ima2),
307 _SYSDEV_ATTR(ima3, 0600, show_ima3, store_ima3),
308 _SYSDEV_ATTR(ima4, 0600, show_ima4, store_ima4),
309 _SYSDEV_ATTR(ima5, 0600, show_ima5, store_ima5),
310 _SYSDEV_ATTR(ima6, 0600, show_ima6, store_ima6),
311 _SYSDEV_ATTR(ima7, 0600, show_ima7, store_ima7),
312 _SYSDEV_ATTR(ima8, 0600, show_ima8, store_ima8),
313 _SYSDEV_ATTR(ima9, 0600, show_ima9, store_ima9),
314 _SYSDEV_ATTR(imaat, 0600, show_imaat, store_imaat),
315 _SYSDEV_ATTR(btcr, 0600, show_btcr, store_btcr),
316 _SYSDEV_ATTR(pccr, 0600, show_pccr, store_pccr),
317 _SYSDEV_ATTR(rpccr, 0600, show_rpccr, store_rpccr),
318 _SYSDEV_ATTR(der, 0600, show_der, store_der),
319 _SYSDEV_ATTR(mer, 0600, show_mer, store_mer),
320 _SYSDEV_ATTR(ber, 0600, show_ber, store_ber),
321 _SYSDEV_ATTR(ier, 0600, show_ier, store_ier),
322 _SYSDEV_ATTR(sier, 0600, show_sier, store_sier),
323 _SYSDEV_ATTR(siar, 0600, show_siar, store_siar),
324 _SYSDEV_ATTR(tsr0, 0600, show_tsr0, store_tsr0),
325 _SYSDEV_ATTR(tsr1, 0600, show_tsr1, store_tsr1),
326 _SYSDEV_ATTR(tsr2, 0600, show_tsr2, store_tsr2),
327 _SYSDEV_ATTR(tsr3, 0600, show_tsr3, store_tsr3),
328#endif /* CONFIG_DEBUG_KERNEL */
6529c13d 329};
b950bdd0
BH		 330#endif /* HAS_PPC_PMC_PA6T */
331#endif /* HAS_PPC_PMC_CLASSIC */
6529c13d 332
9ba1984e 333static void __cpuinit register_cpu_online(unsigned int cpu)
1da177e4
LT		 334{
335 struct cpu *c = &per_cpu(cpu_devices, cpu);
336 struct sys_device *s = &c->sysdev;
6529c13d
OJ		 337 struct sysdev_attribute *attrs, *pmc_attrs;
338 int i, nattrs;
1da177e4 339
b950bdd0 340#ifdef CONFIG_PPC64
ad5cb17f
SR		 341 if (!firmware_has_feature(FW_FEATURE_ISERIES) &&
342 cpu_has_feature(CPU_FTR_SMT))
1da177e4 343 sysdev_create_file(s, &attr_smt_snooze_delay);
b950bdd0 344#endif
1da177e4
LT		 345
346 /* PMC stuff */
6529c13d 347 switch (cur_cpu_spec->pmc_type) {
b950bdd0 348#ifdef HAS_PPC_PMC_IBM
6529c13d
OJ		 349 case PPC_PMC_IBM:
350 attrs = ibm_common_attrs;
351 nattrs = sizeof(ibm_common_attrs) / sizeof(struct sysdev_attribute);
b950bdd0 352 pmc_attrs = classic_pmc_attrs;
6529c13d 353 break;
b950bdd0
BH		 354#endif /* HAS_PPC_PMC_IBM */
355#ifdef HAS_PPC_PMC_G4
356 case PPC_PMC_G4:
357 attrs = g4_common_attrs;
358 nattrs = sizeof(g4_common_attrs) / sizeof(struct sysdev_attribute);
359 pmc_attrs = classic_pmc_attrs;
360 break;
361#endif /* HAS_PPC_PMC_G4 */
362#ifdef HAS_PPC_PMC_PA6T
6529c13d
OJ		 363 case PPC_PMC_PA6T:
364 /* PA Semi starts counting at PMC0 */
365 attrs = pa6t_attrs;
366 nattrs = sizeof(pa6t_attrs) / sizeof(struct sysdev_attribute);
367 pmc_attrs = NULL;
368 break;
b950bdd0 369#endif /* HAS_PPC_PMC_PA6T */
6529c13d
OJ		 370 default:
371 attrs = NULL;
372 nattrs = 0;
373 pmc_attrs = NULL;
374 }
375
376 for (i = 0; i < nattrs; i++)
377 sysdev_create_file(s, &attrs[i]);
1da177e4 378
6529c13d
OJ		 379 if (pmc_attrs)
380 for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
381 sysdev_create_file(s, &pmc_attrs[i]);
1da177e4 382
b950bdd0 383#ifdef CONFIG_PPC64
1da177e4
LT		 384 if (cpu_has_feature(CPU_FTR_MMCRA))
385 sysdev_create_file(s, &attr_mmcra);
386
afd05423 387 if (cpu_has_feature(CPU_FTR_PURR))
1da177e4 388 sysdev_create_file(s, &attr_purr);
4c198557 389
f050982a
AB		 390 if (cpu_has_feature(CPU_FTR_SPURR))
391 sysdev_create_file(s, &attr_spurr);
392
4c198557
AB		 393 if (cpu_has_feature(CPU_FTR_DSCR))
394 sysdev_create_file(s, &attr_dscr);
b950bdd0 395#endif /* CONFIG_PPC64 */
124c27d3 396
93197a36 397 cacheinfo_cpu_online(cpu);
1da177e4
LT		 398}
399
400#ifdef CONFIG_HOTPLUG_CPU
401static void unregister_cpu_online(unsigned int cpu)
402{
403 struct cpu *c = &per_cpu(cpu_devices, cpu);
404 struct sys_device *s = &c->sysdev;
6529c13d
OJ		 405 struct sysdev_attribute *attrs, *pmc_attrs;
406 int i, nattrs;
1da177e4 407
72486f1f 408 BUG_ON(!c->hotpluggable);
1da177e4 409
a1e0eb10 410#ifdef CONFIG_PPC64
ad5cb17f
SR		 411 if (!firmware_has_feature(FW_FEATURE_ISERIES) &&
412 cpu_has_feature(CPU_FTR_SMT))
1da177e4 413 sysdev_remove_file(s, &attr_smt_snooze_delay);
a1e0eb10 414#endif
1da177e4
LT		 415
416 /* PMC stuff */
6529c13d 417 switch (cur_cpu_spec->pmc_type) {
b950bdd0 418#ifdef HAS_PPC_PMC_IBM
6529c13d
OJ		 419 case PPC_PMC_IBM:
420 attrs = ibm_common_attrs;
421 nattrs = sizeof(ibm_common_attrs) / sizeof(struct sysdev_attribute);
b950bdd0
BH		 422 pmc_attrs = classic_pmc_attrs;
423 break;
424#endif /* HAS_PPC_PMC_IBM */
425#ifdef HAS_PPC_PMC_G4
426 case PPC_PMC_G4:
427 attrs = g4_common_attrs;
428 nattrs = sizeof(g4_common_attrs) / sizeof(struct sysdev_attribute);
429 pmc_attrs = classic_pmc_attrs;
6529c13d 430 break;
b950bdd0
BH		 431#endif /* HAS_PPC_PMC_G4 */
432#ifdef HAS_PPC_PMC_PA6T
6529c13d
OJ		 433 case PPC_PMC_PA6T:
434 /* PA Semi starts counting at PMC0 */
435 attrs = pa6t_attrs;
436 nattrs = sizeof(pa6t_attrs) / sizeof(struct sysdev_attribute);
437 pmc_attrs = NULL;
438 break;
b950bdd0 439#endif /* HAS_PPC_PMC_PA6T */
6529c13d
OJ		 440 default:
441 attrs = NULL;
442 nattrs = 0;
443 pmc_attrs = NULL;
444 }
1da177e4 445
6529c13d
OJ		 446 for (i = 0; i < nattrs; i++)
447 sysdev_remove_file(s, &attrs[i]);
448
449 if (pmc_attrs)
450 for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
451 sysdev_remove_file(s, &pmc_attrs[i]);
1da177e4 452
b950bdd0 453#ifdef CONFIG_PPC64
1da177e4
LT		 454 if (cpu_has_feature(CPU_FTR_MMCRA))
455 sysdev_remove_file(s, &attr_mmcra);
456
afd05423 457 if (cpu_has_feature(CPU_FTR_PURR))
1da177e4 458 sysdev_remove_file(s, &attr_purr);
4c198557 459
f050982a
AB		 460 if (cpu_has_feature(CPU_FTR_SPURR))
461 sysdev_remove_file(s, &attr_spurr);
462
4c198557
AB		 463 if (cpu_has_feature(CPU_FTR_DSCR))
464 sysdev_remove_file(s, &attr_dscr);
b950bdd0 465#endif /* CONFIG_PPC64 */
124c27d3 466
93197a36 467 cacheinfo_cpu_offline(cpu);
1da177e4 468}
12633e80
NF		 469
470#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
471ssize_t arch_cpu_probe(const char *buf, size_t count)
472{
473 if (ppc_md.cpu_probe)
474 return ppc_md.cpu_probe(buf, count);
475
476 return -EINVAL;
477}
478
479ssize_t arch_cpu_release(const char *buf, size_t count)
480{
481 if (ppc_md.cpu_release)
482 return ppc_md.cpu_release(buf, count);
483
484 return -EINVAL;
485}
486#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
487
1da177e4
LT		 488#endif /* CONFIG_HOTPLUG_CPU */
489
8c78f307 490static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,
1da177e4
LT		 491 unsigned long action, void *hcpu)
492{
493 unsigned int cpu = (unsigned int)(long)hcpu;
494
495 switch (action) {
496 case CPU_ONLINE:
8bb78442 497 case CPU_ONLINE_FROZEN:
1da177e4
LT		 498 register_cpu_online(cpu);
499 break;
500#ifdef CONFIG_HOTPLUG_CPU
501 case CPU_DEAD:
8bb78442 502 case CPU_DEAD_FROZEN:
1da177e4
LT		 503 unregister_cpu_online(cpu);
504 break;
505#endif
506 }
507 return NOTIFY_OK;
508}
509
8c78f307 510static struct notifier_block __cpuinitdata sysfs_cpu_nb = {
1da177e4
LT		 511 .notifier_call = sysfs_cpu_notify,
512};
513
0344c6c5
CK		 514static DEFINE_MUTEX(cpu_mutex);
515
516int cpu_add_sysdev_attr(struct sysdev_attribute *attr)
517{
518 int cpu;
519
520 mutex_lock(&cpu_mutex);
521
522 for_each_possible_cpu(cpu) {
523 sysdev_create_file(get_cpu_sysdev(cpu), attr);
524 }
525
526 mutex_unlock(&cpu_mutex);
527 return 0;
528}
529EXPORT_SYMBOL_GPL(cpu_add_sysdev_attr);
530
531int cpu_add_sysdev_attr_group(struct attribute_group *attrs)
532{
533 int cpu;
534 struct sys_device *sysdev;
6bcc4c01 535 int ret;
0344c6c5
CK		 536
537 mutex_lock(&cpu_mutex);
538
539 for_each_possible_cpu(cpu) {
540 sysdev = get_cpu_sysdev(cpu);
6bcc4c01
OJ		 541 ret = sysfs_create_group(&sysdev->kobj, attrs);
542 WARN_ON(ret != 0);
0344c6c5
CK		 543 }
544
545 mutex_unlock(&cpu_mutex);
546 return 0;
547}
548EXPORT_SYMBOL_GPL(cpu_add_sysdev_attr_group);
549
550
551void cpu_remove_sysdev_attr(struct sysdev_attribute *attr)
552{
553 int cpu;
554
555 mutex_lock(&cpu_mutex);
556
557 for_each_possible_cpu(cpu) {
558 sysdev_remove_file(get_cpu_sysdev(cpu), attr);
559 }
560
561 mutex_unlock(&cpu_mutex);
562}
563EXPORT_SYMBOL_GPL(cpu_remove_sysdev_attr);
564
565void cpu_remove_sysdev_attr_group(struct attribute_group *attrs)
566{
567 int cpu;
568 struct sys_device *sysdev;
569
570 mutex_lock(&cpu_mutex);
571
572 for_each_possible_cpu(cpu) {
573 sysdev = get_cpu_sysdev(cpu);
574 sysfs_remove_group(&sysdev->kobj, attrs);
575 }
576
577 mutex_unlock(&cpu_mutex);
578}
579EXPORT_SYMBOL_GPL(cpu_remove_sysdev_attr_group);
580
581
1da177e4
LT		 582/* NUMA stuff */
583
584#ifdef CONFIG_NUMA
1da177e4
LT		 585static void register_nodes(void)
586{
587 int i;
588
0fc44159
YG		 589 for (i = 0; i < MAX_NUMNODES; i++)
590 register_one_node(i);
1da177e4 591}
953039c8
JK		 592
593int sysfs_add_device_to_node(struct sys_device *dev, int nid)
594{
595 struct node *node = &node_devices[nid];
596 return sysfs_create_link(&node->sysdev.kobj, &dev->kobj,
597 kobject_name(&dev->kobj));
598}
12654f77 599EXPORT_SYMBOL_GPL(sysfs_add_device_to_node);
953039c8
JK		 600
601void sysfs_remove_device_from_node(struct sys_device *dev, int nid)
602{
603 struct node *node = &node_devices[nid];
604 sysfs_remove_link(&node->sysdev.kobj, kobject_name(&dev->kobj));
605}
12654f77 606EXPORT_SYMBOL_GPL(sysfs_remove_device_from_node);
953039c8 607
1da177e4
LT		 608#else
609static void register_nodes(void)
610{
611 return;
612}
953039c8 613
1da177e4
LT		 614#endif
615
616/* Only valid if CPU is present. */
00bf6e90
SR		 617static ssize_t show_physical_id(struct sys_device *dev,
618 struct sysdev_attribute *attr, char *buf)
1da177e4
LT		 619{
620 struct cpu *cpu = container_of(dev, struct cpu, sysdev);
621
622 return sprintf(buf, "%d\n", get_hard_smp_processor_id(cpu->sysdev.id));
623}
624static SYSDEV_ATTR(physical_id, 0444, show_physical_id, NULL);
625
626static int __init topology_init(void)
627{
628 int cpu;
1da177e4
LT		 629
630 register_nodes();
1da177e4
LT		 631 register_cpu_notifier(&sysfs_cpu_nb);
632
0e551954 633 for_each_possible_cpu(cpu) {
1da177e4
LT		 634 struct cpu *c = &per_cpu(cpu_devices, cpu);
635
1da177e4
LT		 636 /*
637 * For now, we just see if the system supports making
638 * the RTAS calls for CPU hotplug. But, there may be a
639 * more comprehensive way to do this for an individual
640 * CPU. For instance, the boot cpu might never be valid
641 * for hotplugging.
642 */
72486f1f
SS		 643 if (ppc_md.cpu_die)
644 c->hotpluggable = 1;
1da177e4 645
72486f1f 646 if (cpu_online(cpu) || c->hotpluggable) {
76b67ed9 647 register_cpu(c, cpu);
1da177e4
LT		 648
649 sysdev_create_file(&c->sysdev, &attr_physical_id);
650 }
651
652 if (cpu_online(cpu))
653 register_cpu_online(cpu);
654 }
efcac658
AK		 655#ifdef CONFIG_PPC64
656 sysfs_create_dscr_default();
657#endif /* CONFIG_PPC64 */
1da177e4
LT		 658
659 return 0;
660}
e9e77ce8 661subsys_initcall(topology_init);
kernel source for telekom puls (alcatel/mediatek)