blob: 6fdf5ffe8c44665df26c5750576a84ac74c4c6fa [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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>
Paul Gortmaker4b16f8e2011-07-22 18:24:23 -04007#include <linux/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07008#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>
Stephen Rothwell1ababe12005-08-03 14:35:25 +100015#include <asm/firmware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <asm/hvcall.h>
17#include <asm/prom.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include <asm/machdep.h>
Paul Mackerras2249ca92005-11-07 13:18:13 +110019#include <asm/smp.h>
Paul Mackerrasa6dbf932009-09-09 01:26:03 +000020#include <asm/pmc.h>
Deepthi Dharwar707827f2011-11-30 02:46:42 +000021#include <asm/system.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022
Nathan Lynch93197a32008-12-23 18:55:54 +000023#include "cacheinfo.h"
24
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +100025#ifdef CONFIG_PPC64
26#include <asm/paca.h>
27#include <asm/lppaca.h>
28#endif
29
Linus Torvalds1da177e2005-04-16 15:20:36 -070030static DEFINE_PER_CPU(struct cpu, cpu_devices);
31
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +100032/*
33 * SMT snooze delay stuff, 64-bit only for now
34 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +100036#ifdef CONFIG_PPC64
37
Anton Blanchard0ddd3e72006-09-22 20:30:14 +100038/* Time in microseconds we delay before sleeping in the idle loop */
Anton Blanchardb878dc02010-05-16 20:02:39 +000039DEFINE_PER_CPU(long, smt_snooze_delay) = { 100 };
Linus Torvalds1da177e2005-04-16 15:20:36 -070040
Andi Kleen4a0b2b42008-07-01 18:48:41 +020041static ssize_t store_smt_snooze_delay(struct sys_device *dev,
42 struct sysdev_attribute *attr,
43 const char *buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -070044 size_t count)
45{
46 struct cpu *cpu = container_of(dev, struct cpu, sysdev);
47 ssize_t ret;
Anton Blanchardb878dc02010-05-16 20:02:39 +000048 long snooze;
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
Anton Blanchardb878dc02010-05-16 20:02:39 +000050 ret = sscanf(buf, "%ld", &snooze);
Linus Torvalds1da177e2005-04-16 15:20:36 -070051 if (ret != 1)
52 return -EINVAL;
53
54 per_cpu(smt_snooze_delay, cpu->sysdev.id) = snooze;
Deepthi Dharwar707827f2011-11-30 02:46:42 +000055 update_smt_snooze_delay(snooze);
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
57 return count;
58}
59
Andi Kleen4a0b2b42008-07-01 18:48:41 +020060static ssize_t show_smt_snooze_delay(struct sys_device *dev,
61 struct sysdev_attribute *attr,
62 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -070063{
64 struct cpu *cpu = container_of(dev, struct cpu, sysdev);
65
Anton Blanchardb878dc02010-05-16 20:02:39 +000066 return sprintf(buf, "%ld\n", per_cpu(smt_snooze_delay, cpu->sysdev.id));
Linus Torvalds1da177e2005-04-16 15:20:36 -070067}
68
69static SYSDEV_ATTR(smt_snooze_delay, 0644, show_smt_snooze_delay,
70 store_smt_snooze_delay);
71
Linus Torvalds1da177e2005-04-16 15:20:36 -070072static int __init setup_smt_snooze_delay(char *str)
73{
74 unsigned int cpu;
Anton Blanchardb878dc02010-05-16 20:02:39 +000075 long snooze;
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
77 if (!cpu_has_feature(CPU_FTR_SMT))
78 return 1;
79
Anton Blanchardb878dc02010-05-16 20:02:39 +000080 snooze = simple_strtol(str, NULL, 10);
81 for_each_possible_cpu(cpu)
82 per_cpu(smt_snooze_delay, cpu) = snooze;
Linus Torvalds1da177e2005-04-16 15:20:36 -070083
84 return 1;
85}
86__setup("smt-snooze-delay=", setup_smt_snooze_delay);
87
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +100088#endif /* CONFIG_PPC64 */
Michael Ellerman180a3362005-08-09 11:13:36 +100089
Linus Torvalds1da177e2005-04-16 15:20:36 -070090/*
91 * Enabling PMCs will slow partition context switch times so we only do
92 * it the first time we write to the PMCs.
93 */
94
95static DEFINE_PER_CPU(char, pmcs_enabled);
96
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +100097void ppc_enable_pmcs(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098{
Paul Mackerrasa6dbf932009-09-09 01:26:03 +000099 ppc_set_pmu_inuse(1);
100
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 /* Only need to enable them once */
102 if (__get_cpu_var(pmcs_enabled))
103 return;
104
105 __get_cpu_var(pmcs_enabled) = 1;
106
Michael Ellerman180a3362005-08-09 11:13:36 +1000107 if (ppc_md.enable_pmcs)
108 ppc_md.enable_pmcs();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109}
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000110EXPORT_SYMBOL(ppc_enable_pmcs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112#define SYSFS_PMCSETUP(NAME, ADDRESS) \
Rusty Russell9a371932009-03-11 12:20:05 +0000113static void read_##NAME(void *val) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114{ \
Benjamin Herrenschmidtec78c8a2009-03-26 19:29:06 +0000115 *(unsigned long *)val = mfspr(ADDRESS); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116} \
Benjamin Herrenschmidtec78c8a2009-03-26 19:29:06 +0000117static void write_##NAME(void *val) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118{ \
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000119 ppc_enable_pmcs(); \
Rusty Russell9a371932009-03-11 12:20:05 +0000120 mtspr(ADDRESS, *(unsigned long *)val); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121} \
Andi Kleen4a0b2b42008-07-01 18:48:41 +0200122static ssize_t show_##NAME(struct sys_device *dev, \
123 struct sysdev_attribute *attr, \
124 char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125{ \
126 struct cpu *cpu = container_of(dev, struct cpu, sysdev); \
Rusty Russell9a371932009-03-11 12:20:05 +0000127 unsigned long val; \
128 smp_call_function_single(cpu->sysdev.id, read_##NAME, &val, 1); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129 return sprintf(buf, "%lx\n", val); \
130} \
Adrian Bunk3ff6eec2008-01-24 22:16:20 +0100131static ssize_t __used \
Andi Kleen4a0b2b42008-07-01 18:48:41 +0200132 store_##NAME(struct sys_device *dev, struct sysdev_attribute *attr, \
133 const char *buf, size_t count) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134{ \
135 struct cpu *cpu = container_of(dev, struct cpu, sysdev); \
136 unsigned long val; \
137 int ret = sscanf(buf, "%lx", &val); \
138 if (ret != 1) \
139 return -EINVAL; \
Rusty Russell9a371932009-03-11 12:20:05 +0000140 smp_call_function_single(cpu->sysdev.id, write_##NAME, &val, 1); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141 return count; \
142}
143
Olof Johansson6529c132007-01-28 21:25:57 -0600144
145/* Let's define all possible registers, we'll only hook up the ones
146 * that are implemented on the current processor
147 */
148
Kumar Gala33a7f122008-09-18 17:50:42 -0500149#if defined(CONFIG_PPC64)
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000150#define HAS_PPC_PMC_CLASSIC 1
151#define HAS_PPC_PMC_IBM 1
152#define HAS_PPC_PMC_PA6T 1
Kumar Gala33a7f122008-09-18 17:50:42 -0500153#elif defined(CONFIG_6xx)
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000154#define HAS_PPC_PMC_CLASSIC 1
155#define HAS_PPC_PMC_IBM 1
156#define HAS_PPC_PMC_G4 1
157#endif
158
159
160#ifdef HAS_PPC_PMC_CLASSIC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161SYSFS_PMCSETUP(mmcr0, SPRN_MMCR0);
162SYSFS_PMCSETUP(mmcr1, SPRN_MMCR1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163SYSFS_PMCSETUP(pmc1, SPRN_PMC1);
164SYSFS_PMCSETUP(pmc2, SPRN_PMC2);
165SYSFS_PMCSETUP(pmc3, SPRN_PMC3);
166SYSFS_PMCSETUP(pmc4, SPRN_PMC4);
167SYSFS_PMCSETUP(pmc5, SPRN_PMC5);
168SYSFS_PMCSETUP(pmc6, SPRN_PMC6);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000169
170#ifdef HAS_PPC_PMC_G4
171SYSFS_PMCSETUP(mmcr2, SPRN_MMCR2);
172#endif
173
174#ifdef CONFIG_PPC64
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175SYSFS_PMCSETUP(pmc7, SPRN_PMC7);
176SYSFS_PMCSETUP(pmc8, SPRN_PMC8);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000177
178SYSFS_PMCSETUP(mmcra, SPRN_MMCRA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179SYSFS_PMCSETUP(purr, SPRN_PURR);
Anton Blanchardf0509822006-12-08 17:51:13 +1100180SYSFS_PMCSETUP(spurr, SPRN_SPURR);
Anton Blanchard4c1985572006-12-08 17:46:58 +1100181SYSFS_PMCSETUP(dscr, SPRN_DSCR);
Ananth N Mavinakayanahalli595fe912011-11-10 19:58:53 +0000182SYSFS_PMCSETUP(pir, SPRN_PIR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000184static SYSDEV_ATTR(mmcra, 0600, show_mmcra, store_mmcra);
185static SYSDEV_ATTR(spurr, 0600, show_spurr, NULL);
186static SYSDEV_ATTR(dscr, 0600, show_dscr, store_dscr);
187static SYSDEV_ATTR(purr, 0600, show_purr, store_purr);
Ananth N Mavinakayanahalli595fe912011-11-10 19:58:53 +0000188static SYSDEV_ATTR(pir, 0400, show_pir, NULL);
Alexey Kardashevskiyefcac652011-03-02 15:18:48 +0000189
190unsigned long dscr_default = 0;
191EXPORT_SYMBOL(dscr_default);
192
193static ssize_t show_dscr_default(struct sysdev_class *class,
194 struct sysdev_class_attribute *attr, char *buf)
195{
196 return sprintf(buf, "%lx\n", dscr_default);
197}
198
199static ssize_t __used store_dscr_default(struct sysdev_class *class,
200 struct sysdev_class_attribute *attr, const char *buf,
201 size_t count)
202{
203 unsigned long val;
204 int ret = 0;
205
206 ret = sscanf(buf, "%lx", &val);
207 if (ret != 1)
208 return -EINVAL;
209 dscr_default = val;
210
211 return count;
212}
213
214static SYSDEV_CLASS_ATTR(dscr_default, 0600,
215 show_dscr_default, store_dscr_default);
216
217static void sysfs_create_dscr_default(void)
218{
219 int err = 0;
220 if (cpu_has_feature(CPU_FTR_DSCR))
221 err = sysfs_create_file(&cpu_sysdev_class.kset.kobj,
222 &attr_dscr_default.attr);
223}
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000224#endif /* CONFIG_PPC64 */
225
226#ifdef HAS_PPC_PMC_PA6T
Olof Johansson25fc5302007-04-18 16:38:21 +1000227SYSFS_PMCSETUP(pa6t_pmc0, SPRN_PA6T_PMC0);
228SYSFS_PMCSETUP(pa6t_pmc1, SPRN_PA6T_PMC1);
229SYSFS_PMCSETUP(pa6t_pmc2, SPRN_PA6T_PMC2);
230SYSFS_PMCSETUP(pa6t_pmc3, SPRN_PA6T_PMC3);
231SYSFS_PMCSETUP(pa6t_pmc4, SPRN_PA6T_PMC4);
232SYSFS_PMCSETUP(pa6t_pmc5, SPRN_PA6T_PMC5);
Olof Johansson2e1957f2007-09-05 12:09:06 +1000233#ifdef CONFIG_DEBUG_KERNEL
234SYSFS_PMCSETUP(hid0, SPRN_HID0);
235SYSFS_PMCSETUP(hid1, SPRN_HID1);
236SYSFS_PMCSETUP(hid4, SPRN_HID4);
237SYSFS_PMCSETUP(hid5, SPRN_HID5);
238SYSFS_PMCSETUP(ima0, SPRN_PA6T_IMA0);
239SYSFS_PMCSETUP(ima1, SPRN_PA6T_IMA1);
240SYSFS_PMCSETUP(ima2, SPRN_PA6T_IMA2);
241SYSFS_PMCSETUP(ima3, SPRN_PA6T_IMA3);
242SYSFS_PMCSETUP(ima4, SPRN_PA6T_IMA4);
243SYSFS_PMCSETUP(ima5, SPRN_PA6T_IMA5);
244SYSFS_PMCSETUP(ima6, SPRN_PA6T_IMA6);
245SYSFS_PMCSETUP(ima7, SPRN_PA6T_IMA7);
246SYSFS_PMCSETUP(ima8, SPRN_PA6T_IMA8);
247SYSFS_PMCSETUP(ima9, SPRN_PA6T_IMA9);
248SYSFS_PMCSETUP(imaat, SPRN_PA6T_IMAAT);
249SYSFS_PMCSETUP(btcr, SPRN_PA6T_BTCR);
250SYSFS_PMCSETUP(pccr, SPRN_PA6T_PCCR);
251SYSFS_PMCSETUP(rpccr, SPRN_PA6T_RPCCR);
252SYSFS_PMCSETUP(der, SPRN_PA6T_DER);
253SYSFS_PMCSETUP(mer, SPRN_PA6T_MER);
254SYSFS_PMCSETUP(ber, SPRN_PA6T_BER);
255SYSFS_PMCSETUP(ier, SPRN_PA6T_IER);
256SYSFS_PMCSETUP(sier, SPRN_PA6T_SIER);
257SYSFS_PMCSETUP(siar, SPRN_PA6T_SIAR);
258SYSFS_PMCSETUP(tsr0, SPRN_PA6T_TSR0);
259SYSFS_PMCSETUP(tsr1, SPRN_PA6T_TSR1);
260SYSFS_PMCSETUP(tsr2, SPRN_PA6T_TSR2);
261SYSFS_PMCSETUP(tsr3, SPRN_PA6T_TSR3);
262#endif /* CONFIG_DEBUG_KERNEL */
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000263#endif /* HAS_PPC_PMC_PA6T */
Olof Johansson6529c132007-01-28 21:25:57 -0600264
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000265#ifdef HAS_PPC_PMC_IBM
Olof Johansson6529c132007-01-28 21:25:57 -0600266static struct sysdev_attribute ibm_common_attrs[] = {
267 _SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
268 _SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
269};
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000270#endif /* HAS_PPC_PMC_G4 */
Olof Johansson6529c132007-01-28 21:25:57 -0600271
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000272#ifdef HAS_PPC_PMC_G4
273static struct sysdev_attribute g4_common_attrs[] = {
274 _SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
275 _SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
276 _SYSDEV_ATTR(mmcr2, 0600, show_mmcr2, store_mmcr2),
277};
278#endif /* HAS_PPC_PMC_G4 */
279
280static struct sysdev_attribute classic_pmc_attrs[] = {
Olof Johansson6529c132007-01-28 21:25:57 -0600281 _SYSDEV_ATTR(pmc1, 0600, show_pmc1, store_pmc1),
282 _SYSDEV_ATTR(pmc2, 0600, show_pmc2, store_pmc2),
283 _SYSDEV_ATTR(pmc3, 0600, show_pmc3, store_pmc3),
284 _SYSDEV_ATTR(pmc4, 0600, show_pmc4, store_pmc4),
285 _SYSDEV_ATTR(pmc5, 0600, show_pmc5, store_pmc5),
286 _SYSDEV_ATTR(pmc6, 0600, show_pmc6, store_pmc6),
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000287#ifdef CONFIG_PPC64
Olof Johansson6529c132007-01-28 21:25:57 -0600288 _SYSDEV_ATTR(pmc7, 0600, show_pmc7, store_pmc7),
289 _SYSDEV_ATTR(pmc8, 0600, show_pmc8, store_pmc8),
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000290#endif
Olof Johansson6529c132007-01-28 21:25:57 -0600291};
292
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000293#ifdef HAS_PPC_PMC_PA6T
Olof Johansson6529c132007-01-28 21:25:57 -0600294static struct sysdev_attribute pa6t_attrs[] = {
295 _SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
296 _SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
297 _SYSDEV_ATTR(pmc0, 0600, show_pa6t_pmc0, store_pa6t_pmc0),
298 _SYSDEV_ATTR(pmc1, 0600, show_pa6t_pmc1, store_pa6t_pmc1),
299 _SYSDEV_ATTR(pmc2, 0600, show_pa6t_pmc2, store_pa6t_pmc2),
300 _SYSDEV_ATTR(pmc3, 0600, show_pa6t_pmc3, store_pa6t_pmc3),
301 _SYSDEV_ATTR(pmc4, 0600, show_pa6t_pmc4, store_pa6t_pmc4),
302 _SYSDEV_ATTR(pmc5, 0600, show_pa6t_pmc5, store_pa6t_pmc5),
Olof Johansson2e1957f2007-09-05 12:09:06 +1000303#ifdef CONFIG_DEBUG_KERNEL
304 _SYSDEV_ATTR(hid0, 0600, show_hid0, store_hid0),
305 _SYSDEV_ATTR(hid1, 0600, show_hid1, store_hid1),
306 _SYSDEV_ATTR(hid4, 0600, show_hid4, store_hid4),
307 _SYSDEV_ATTR(hid5, 0600, show_hid5, store_hid5),
308 _SYSDEV_ATTR(ima0, 0600, show_ima0, store_ima0),
309 _SYSDEV_ATTR(ima1, 0600, show_ima1, store_ima1),
310 _SYSDEV_ATTR(ima2, 0600, show_ima2, store_ima2),
311 _SYSDEV_ATTR(ima3, 0600, show_ima3, store_ima3),
312 _SYSDEV_ATTR(ima4, 0600, show_ima4, store_ima4),
313 _SYSDEV_ATTR(ima5, 0600, show_ima5, store_ima5),
314 _SYSDEV_ATTR(ima6, 0600, show_ima6, store_ima6),
315 _SYSDEV_ATTR(ima7, 0600, show_ima7, store_ima7),
316 _SYSDEV_ATTR(ima8, 0600, show_ima8, store_ima8),
317 _SYSDEV_ATTR(ima9, 0600, show_ima9, store_ima9),
318 _SYSDEV_ATTR(imaat, 0600, show_imaat, store_imaat),
319 _SYSDEV_ATTR(btcr, 0600, show_btcr, store_btcr),
320 _SYSDEV_ATTR(pccr, 0600, show_pccr, store_pccr),
321 _SYSDEV_ATTR(rpccr, 0600, show_rpccr, store_rpccr),
322 _SYSDEV_ATTR(der, 0600, show_der, store_der),
323 _SYSDEV_ATTR(mer, 0600, show_mer, store_mer),
324 _SYSDEV_ATTR(ber, 0600, show_ber, store_ber),
325 _SYSDEV_ATTR(ier, 0600, show_ier, store_ier),
326 _SYSDEV_ATTR(sier, 0600, show_sier, store_sier),
327 _SYSDEV_ATTR(siar, 0600, show_siar, store_siar),
328 _SYSDEV_ATTR(tsr0, 0600, show_tsr0, store_tsr0),
329 _SYSDEV_ATTR(tsr1, 0600, show_tsr1, store_tsr1),
330 _SYSDEV_ATTR(tsr2, 0600, show_tsr2, store_tsr2),
331 _SYSDEV_ATTR(tsr3, 0600, show_tsr3, store_tsr3),
332#endif /* CONFIG_DEBUG_KERNEL */
Olof Johansson6529c132007-01-28 21:25:57 -0600333};
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000334#endif /* HAS_PPC_PMC_PA6T */
335#endif /* HAS_PPC_PMC_CLASSIC */
Olof Johansson6529c132007-01-28 21:25:57 -0600336
Nathan Lynch9ba19842008-07-27 15:24:51 +1000337static void __cpuinit register_cpu_online(unsigned int cpu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338{
339 struct cpu *c = &per_cpu(cpu_devices, cpu);
340 struct sys_device *s = &c->sysdev;
Olof Johansson6529c132007-01-28 21:25:57 -0600341 struct sysdev_attribute *attrs, *pmc_attrs;
342 int i, nattrs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000344#ifdef CONFIG_PPC64
Stephen Rothwellad5cb172006-11-13 14:46:04 +1100345 if (!firmware_has_feature(FW_FEATURE_ISERIES) &&
346 cpu_has_feature(CPU_FTR_SMT))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 sysdev_create_file(s, &attr_smt_snooze_delay);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000348#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349
350 /* PMC stuff */
Olof Johansson6529c132007-01-28 21:25:57 -0600351 switch (cur_cpu_spec->pmc_type) {
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000352#ifdef HAS_PPC_PMC_IBM
Olof Johansson6529c132007-01-28 21:25:57 -0600353 case PPC_PMC_IBM:
354 attrs = ibm_common_attrs;
355 nattrs = sizeof(ibm_common_attrs) / sizeof(struct sysdev_attribute);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000356 pmc_attrs = classic_pmc_attrs;
Olof Johansson6529c132007-01-28 21:25:57 -0600357 break;
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000358#endif /* HAS_PPC_PMC_IBM */
359#ifdef HAS_PPC_PMC_G4
360 case PPC_PMC_G4:
361 attrs = g4_common_attrs;
362 nattrs = sizeof(g4_common_attrs) / sizeof(struct sysdev_attribute);
363 pmc_attrs = classic_pmc_attrs;
364 break;
365#endif /* HAS_PPC_PMC_G4 */
366#ifdef HAS_PPC_PMC_PA6T
Olof Johansson6529c132007-01-28 21:25:57 -0600367 case PPC_PMC_PA6T:
368 /* PA Semi starts counting at PMC0 */
369 attrs = pa6t_attrs;
370 nattrs = sizeof(pa6t_attrs) / sizeof(struct sysdev_attribute);
371 pmc_attrs = NULL;
372 break;
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000373#endif /* HAS_PPC_PMC_PA6T */
Olof Johansson6529c132007-01-28 21:25:57 -0600374 default:
375 attrs = NULL;
376 nattrs = 0;
377 pmc_attrs = NULL;
378 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379
Olof Johansson6529c132007-01-28 21:25:57 -0600380 for (i = 0; i < nattrs; i++)
381 sysdev_create_file(s, &attrs[i]);
382
383 if (pmc_attrs)
384 for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
385 sysdev_create_file(s, &pmc_attrs[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000387#ifdef CONFIG_PPC64
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 if (cpu_has_feature(CPU_FTR_MMCRA))
389 sysdev_create_file(s, &attr_mmcra);
390
Michael Neulingafd05422006-07-28 13:58:37 +1000391 if (cpu_has_feature(CPU_FTR_PURR))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 sysdev_create_file(s, &attr_purr);
Anton Blanchard4c1985572006-12-08 17:46:58 +1100393
Anton Blanchardf0509822006-12-08 17:51:13 +1100394 if (cpu_has_feature(CPU_FTR_SPURR))
395 sysdev_create_file(s, &attr_spurr);
396
Anton Blanchard4c1985572006-12-08 17:46:58 +1100397 if (cpu_has_feature(CPU_FTR_DSCR))
398 sysdev_create_file(s, &attr_dscr);
Ananth N Mavinakayanahalli595fe912011-11-10 19:58:53 +0000399
400 if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))
401 sysdev_create_file(s, &attr_pir);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000402#endif /* CONFIG_PPC64 */
Nathan Lynch124c27d2008-07-27 15:24:55 +1000403
Nathan Lynch93197a32008-12-23 18:55:54 +0000404 cacheinfo_cpu_online(cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405}
406
407#ifdef CONFIG_HOTPLUG_CPU
408static void unregister_cpu_online(unsigned int cpu)
409{
410 struct cpu *c = &per_cpu(cpu_devices, cpu);
411 struct sys_device *s = &c->sysdev;
Olof Johansson6529c132007-01-28 21:25:57 -0600412 struct sysdev_attribute *attrs, *pmc_attrs;
413 int i, nattrs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414
Siddha, Suresh B72486f12006-12-07 02:14:10 +0100415 BUG_ON(!c->hotpluggable);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416
Milton Millera1e0eb12008-11-16 11:44:42 +0000417#ifdef CONFIG_PPC64
Stephen Rothwellad5cb172006-11-13 14:46:04 +1100418 if (!firmware_has_feature(FW_FEATURE_ISERIES) &&
419 cpu_has_feature(CPU_FTR_SMT))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 sysdev_remove_file(s, &attr_smt_snooze_delay);
Milton Millera1e0eb12008-11-16 11:44:42 +0000421#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422
423 /* PMC stuff */
Olof Johansson6529c132007-01-28 21:25:57 -0600424 switch (cur_cpu_spec->pmc_type) {
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000425#ifdef HAS_PPC_PMC_IBM
Olof Johansson6529c132007-01-28 21:25:57 -0600426 case PPC_PMC_IBM:
427 attrs = ibm_common_attrs;
428 nattrs = sizeof(ibm_common_attrs) / sizeof(struct sysdev_attribute);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000429 pmc_attrs = classic_pmc_attrs;
Olof Johansson6529c132007-01-28 21:25:57 -0600430 break;
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000431#endif /* HAS_PPC_PMC_IBM */
432#ifdef HAS_PPC_PMC_G4
433 case PPC_PMC_G4:
434 attrs = g4_common_attrs;
435 nattrs = sizeof(g4_common_attrs) / sizeof(struct sysdev_attribute);
436 pmc_attrs = classic_pmc_attrs;
437 break;
438#endif /* HAS_PPC_PMC_G4 */
439#ifdef HAS_PPC_PMC_PA6T
Olof Johansson6529c132007-01-28 21:25:57 -0600440 case PPC_PMC_PA6T:
441 /* PA Semi starts counting at PMC0 */
442 attrs = pa6t_attrs;
443 nattrs = sizeof(pa6t_attrs) / sizeof(struct sysdev_attribute);
444 pmc_attrs = NULL;
445 break;
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000446#endif /* HAS_PPC_PMC_PA6T */
Olof Johansson6529c132007-01-28 21:25:57 -0600447 default:
448 attrs = NULL;
449 nattrs = 0;
450 pmc_attrs = NULL;
451 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452
Olof Johansson6529c132007-01-28 21:25:57 -0600453 for (i = 0; i < nattrs; i++)
454 sysdev_remove_file(s, &attrs[i]);
455
456 if (pmc_attrs)
457 for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
458 sysdev_remove_file(s, &pmc_attrs[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000460#ifdef CONFIG_PPC64
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461 if (cpu_has_feature(CPU_FTR_MMCRA))
462 sysdev_remove_file(s, &attr_mmcra);
463
Michael Neulingafd05422006-07-28 13:58:37 +1000464 if (cpu_has_feature(CPU_FTR_PURR))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 sysdev_remove_file(s, &attr_purr);
Anton Blanchard4c1985572006-12-08 17:46:58 +1100466
Anton Blanchardf0509822006-12-08 17:51:13 +1100467 if (cpu_has_feature(CPU_FTR_SPURR))
468 sysdev_remove_file(s, &attr_spurr);
469
Anton Blanchard4c1985572006-12-08 17:46:58 +1100470 if (cpu_has_feature(CPU_FTR_DSCR))
471 sysdev_remove_file(s, &attr_dscr);
Ananth N Mavinakayanahalli595fe912011-11-10 19:58:53 +0000472
473 if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))
474 sysdev_remove_file(s, &attr_pir);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000475#endif /* CONFIG_PPC64 */
Nathan Lynch124c27d2008-07-27 15:24:55 +1000476
Nathan Lynch93197a32008-12-23 18:55:54 +0000477 cacheinfo_cpu_offline(cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478}
Nathan Fontenot12633e82009-11-25 17:23:25 +0000479
480#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
481ssize_t arch_cpu_probe(const char *buf, size_t count)
482{
483 if (ppc_md.cpu_probe)
484 return ppc_md.cpu_probe(buf, count);
485
486 return -EINVAL;
487}
488
489ssize_t arch_cpu_release(const char *buf, size_t count)
490{
491 if (ppc_md.cpu_release)
492 return ppc_md.cpu_release(buf, count);
493
494 return -EINVAL;
495}
496#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
497
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498#endif /* CONFIG_HOTPLUG_CPU */
499
Chandra Seetharaman8c78f302006-07-30 03:03:35 -0700500static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 unsigned long action, void *hcpu)
502{
503 unsigned int cpu = (unsigned int)(long)hcpu;
504
505 switch (action) {
506 case CPU_ONLINE:
Rafael J. Wysocki8bb78442007-05-09 02:35:10 -0700507 case CPU_ONLINE_FROZEN:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508 register_cpu_online(cpu);
509 break;
510#ifdef CONFIG_HOTPLUG_CPU
511 case CPU_DEAD:
Rafael J. Wysocki8bb78442007-05-09 02:35:10 -0700512 case CPU_DEAD_FROZEN:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 unregister_cpu_online(cpu);
514 break;
515#endif
516 }
517 return NOTIFY_OK;
518}
519
Chandra Seetharaman8c78f302006-07-30 03:03:35 -0700520static struct notifier_block __cpuinitdata sysfs_cpu_nb = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521 .notifier_call = sysfs_cpu_notify,
522};
523
Christian Krafft0344c6c2006-10-24 18:31:24 +0200524static DEFINE_MUTEX(cpu_mutex);
525
526int cpu_add_sysdev_attr(struct sysdev_attribute *attr)
527{
528 int cpu;
529
530 mutex_lock(&cpu_mutex);
531
532 for_each_possible_cpu(cpu) {
533 sysdev_create_file(get_cpu_sysdev(cpu), attr);
534 }
535
536 mutex_unlock(&cpu_mutex);
537 return 0;
538}
539EXPORT_SYMBOL_GPL(cpu_add_sysdev_attr);
540
541int cpu_add_sysdev_attr_group(struct attribute_group *attrs)
542{
543 int cpu;
544 struct sys_device *sysdev;
Olof Johansson6bcc4c02007-09-05 12:43:17 +1000545 int ret;
Christian Krafft0344c6c2006-10-24 18:31:24 +0200546
547 mutex_lock(&cpu_mutex);
548
549 for_each_possible_cpu(cpu) {
550 sysdev = get_cpu_sysdev(cpu);
Olof Johansson6bcc4c02007-09-05 12:43:17 +1000551 ret = sysfs_create_group(&sysdev->kobj, attrs);
552 WARN_ON(ret != 0);
Christian Krafft0344c6c2006-10-24 18:31:24 +0200553 }
554
555 mutex_unlock(&cpu_mutex);
556 return 0;
557}
558EXPORT_SYMBOL_GPL(cpu_add_sysdev_attr_group);
559
560
561void cpu_remove_sysdev_attr(struct sysdev_attribute *attr)
562{
563 int cpu;
564
565 mutex_lock(&cpu_mutex);
566
567 for_each_possible_cpu(cpu) {
568 sysdev_remove_file(get_cpu_sysdev(cpu), attr);
569 }
570
571 mutex_unlock(&cpu_mutex);
572}
573EXPORT_SYMBOL_GPL(cpu_remove_sysdev_attr);
574
575void cpu_remove_sysdev_attr_group(struct attribute_group *attrs)
576{
577 int cpu;
578 struct sys_device *sysdev;
579
580 mutex_lock(&cpu_mutex);
581
582 for_each_possible_cpu(cpu) {
583 sysdev = get_cpu_sysdev(cpu);
584 sysfs_remove_group(&sysdev->kobj, attrs);
585 }
586
587 mutex_unlock(&cpu_mutex);
588}
589EXPORT_SYMBOL_GPL(cpu_remove_sysdev_attr_group);
590
591
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592/* NUMA stuff */
593
594#ifdef CONFIG_NUMA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595static void register_nodes(void)
596{
597 int i;
598
Yasunori Goto0fc44152006-06-27 02:53:38 -0700599 for (i = 0; i < MAX_NUMNODES; i++)
600 register_one_node(i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601}
Jeremy Kerr953039c2006-05-01 12:16:12 -0700602
603int sysfs_add_device_to_node(struct sys_device *dev, int nid)
604{
605 struct node *node = &node_devices[nid];
606 return sysfs_create_link(&node->sysdev.kobj, &dev->kobj,
607 kobject_name(&dev->kobj));
608}
Johannes Berg12654f72007-07-05 19:35:33 +1000609EXPORT_SYMBOL_GPL(sysfs_add_device_to_node);
Jeremy Kerr953039c2006-05-01 12:16:12 -0700610
611void sysfs_remove_device_from_node(struct sys_device *dev, int nid)
612{
613 struct node *node = &node_devices[nid];
614 sysfs_remove_link(&node->sysdev.kobj, kobject_name(&dev->kobj));
615}
Johannes Berg12654f72007-07-05 19:35:33 +1000616EXPORT_SYMBOL_GPL(sysfs_remove_device_from_node);
Jeremy Kerr953039c2006-05-01 12:16:12 -0700617
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618#else
619static void register_nodes(void)
620{
621 return;
622}
Jeremy Kerr953039c2006-05-01 12:16:12 -0700623
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624#endif
625
626/* Only valid if CPU is present. */
Stephen Rothwell00bf6e92008-07-23 10:44:58 +1000627static ssize_t show_physical_id(struct sys_device *dev,
628 struct sysdev_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629{
630 struct cpu *cpu = container_of(dev, struct cpu, sysdev);
631
632 return sprintf(buf, "%d\n", get_hard_smp_processor_id(cpu->sysdev.id));
633}
634static SYSDEV_ATTR(physical_id, 0444, show_physical_id, NULL);
635
636static int __init topology_init(void)
637{
638 int cpu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639
640 register_nodes();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641 register_cpu_notifier(&sysfs_cpu_nb);
642
KAMEZAWA Hiroyuki0e551952006-03-28 14:50:51 -0800643 for_each_possible_cpu(cpu) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644 struct cpu *c = &per_cpu(cpu_devices, cpu);
645
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646 /*
647 * For now, we just see if the system supports making
648 * the RTAS calls for CPU hotplug. But, there may be a
649 * more comprehensive way to do this for an individual
650 * CPU. For instance, the boot cpu might never be valid
651 * for hotplugging.
652 */
Siddha, Suresh B72486f12006-12-07 02:14:10 +0100653 if (ppc_md.cpu_die)
654 c->hotpluggable = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655
Siddha, Suresh B72486f12006-12-07 02:14:10 +0100656 if (cpu_online(cpu) || c->hotpluggable) {
KAMEZAWA Hiroyuki76b67ed2006-06-27 02:53:41 -0700657 register_cpu(c, cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658
659 sysdev_create_file(&c->sysdev, &attr_physical_id);
660 }
661
662 if (cpu_online(cpu))
663 register_cpu_online(cpu);
664 }
Alexey Kardashevskiyefcac652011-03-02 15:18:48 +0000665#ifdef CONFIG_PPC64
666 sysfs_create_dscr_default();
667#endif /* CONFIG_PPC64 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668
669 return 0;
670}
Kevin Corrye9e77ce2007-05-03 03:11:49 +1000671subsys_initcall(topology_init);