blob: c0d8c2006bf4c7e29d37ef10863929d17d48f38f [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>
7#include <linux/module.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>
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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070021
Nathan Lynch93197a32008-12-23 18:55:54 +000022#include "cacheinfo.h"
23
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +100024#ifdef CONFIG_PPC64
25#include <asm/paca.h>
26#include <asm/lppaca.h>
27#endif
28
Linus Torvalds1da177e2005-04-16 15:20:36 -070029static DEFINE_PER_CPU(struct cpu, cpu_devices);
30
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +100031/*
32 * SMT snooze delay stuff, 64-bit only for now
33 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +100035#ifdef CONFIG_PPC64
36
Anton Blanchard0ddd3e72006-09-22 20:30:14 +100037/* Time in microseconds we delay before sleeping in the idle loop */
Anton Blanchardb878dc02010-05-16 20:02:39 +000038DEFINE_PER_CPU(long, smt_snooze_delay) = { 100 };
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
Andi Kleen4a0b2b42008-07-01 18:48:41 +020040static ssize_t store_smt_snooze_delay(struct sys_device *dev,
41 struct sysdev_attribute *attr,
42 const char *buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 size_t count)
44{
45 struct cpu *cpu = container_of(dev, struct cpu, sysdev);
46 ssize_t ret;
Anton Blanchardb878dc02010-05-16 20:02:39 +000047 long snooze;
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
Anton Blanchardb878dc02010-05-16 20:02:39 +000049 ret = sscanf(buf, "%ld", &snooze);
Linus Torvalds1da177e2005-04-16 15:20:36 -070050 if (ret != 1)
51 return -EINVAL;
52
53 per_cpu(smt_snooze_delay, cpu->sysdev.id) = snooze;
54
55 return count;
56}
57
Andi Kleen4a0b2b42008-07-01 18:48:41 +020058static ssize_t show_smt_snooze_delay(struct sys_device *dev,
59 struct sysdev_attribute *attr,
60 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -070061{
62 struct cpu *cpu = container_of(dev, struct cpu, sysdev);
63
Anton Blanchardb878dc02010-05-16 20:02:39 +000064 return sprintf(buf, "%ld\n", per_cpu(smt_snooze_delay, cpu->sysdev.id));
Linus Torvalds1da177e2005-04-16 15:20:36 -070065}
66
67static SYSDEV_ATTR(smt_snooze_delay, 0644, show_smt_snooze_delay,
68 store_smt_snooze_delay);
69
Linus Torvalds1da177e2005-04-16 15:20:36 -070070static int __init setup_smt_snooze_delay(char *str)
71{
72 unsigned int cpu;
Anton Blanchardb878dc02010-05-16 20:02:39 +000073 long snooze;
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
75 if (!cpu_has_feature(CPU_FTR_SMT))
76 return 1;
77
Anton Blanchardb878dc02010-05-16 20:02:39 +000078 snooze = simple_strtol(str, NULL, 10);
79 for_each_possible_cpu(cpu)
80 per_cpu(smt_snooze_delay, cpu) = snooze;
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
82 return 1;
83}
84__setup("smt-snooze-delay=", setup_smt_snooze_delay);
85
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +100086#endif /* CONFIG_PPC64 */
Michael Ellerman180a3362005-08-09 11:13:36 +100087
Linus Torvalds1da177e2005-04-16 15:20:36 -070088/*
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
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +100095void ppc_enable_pmcs(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070096{
Paul Mackerrasa6dbf932009-09-09 01:26:03 +000097 ppc_set_pmu_inuse(1);
98
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 /* Only need to enable them once */
100 if (__get_cpu_var(pmcs_enabled))
101 return;
102
103 __get_cpu_var(pmcs_enabled) = 1;
104
Michael Ellerman180a3362005-08-09 11:13:36 +1000105 if (ppc_md.enable_pmcs)
106 ppc_md.enable_pmcs();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107}
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000108EXPORT_SYMBOL(ppc_enable_pmcs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110#define SYSFS_PMCSETUP(NAME, ADDRESS) \
Rusty Russell9a371932009-03-11 12:20:05 +0000111static void read_##NAME(void *val) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112{ \
Benjamin Herrenschmidtec78c8a2009-03-26 19:29:06 +0000113 *(unsigned long *)val = mfspr(ADDRESS); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114} \
Benjamin Herrenschmidtec78c8a2009-03-26 19:29:06 +0000115static void write_##NAME(void *val) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116{ \
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000117 ppc_enable_pmcs(); \
Rusty Russell9a371932009-03-11 12:20:05 +0000118 mtspr(ADDRESS, *(unsigned long *)val); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119} \
Andi Kleen4a0b2b42008-07-01 18:48:41 +0200120static ssize_t show_##NAME(struct sys_device *dev, \
121 struct sysdev_attribute *attr, \
122 char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123{ \
124 struct cpu *cpu = container_of(dev, struct cpu, sysdev); \
Rusty Russell9a371932009-03-11 12:20:05 +0000125 unsigned long val; \
126 smp_call_function_single(cpu->sysdev.id, read_##NAME, &val, 1); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 return sprintf(buf, "%lx\n", val); \
128} \
Adrian Bunk3ff6eec2008-01-24 22:16:20 +0100129static ssize_t __used \
Andi Kleen4a0b2b42008-07-01 18:48:41 +0200130 store_##NAME(struct sys_device *dev, struct sysdev_attribute *attr, \
131 const char *buf, size_t count) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132{ \
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; \
Rusty Russell9a371932009-03-11 12:20:05 +0000138 smp_call_function_single(cpu->sysdev.id, write_##NAME, &val, 1); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 return count; \
140}
141
Olof Johansson6529c132007-01-28 21:25:57 -0600142
143/* Let's define all possible registers, we'll only hook up the ones
144 * that are implemented on the current processor
145 */
146
Kumar Gala33a7f122008-09-18 17:50:42 -0500147#if defined(CONFIG_PPC64)
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000148#define HAS_PPC_PMC_CLASSIC 1
149#define HAS_PPC_PMC_IBM 1
150#define HAS_PPC_PMC_PA6T 1
Kumar Gala33a7f122008-09-18 17:50:42 -0500151#elif defined(CONFIG_6xx)
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000152#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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159SYSFS_PMCSETUP(mmcr0, SPRN_MMCR0);
160SYSFS_PMCSETUP(mmcr1, SPRN_MMCR1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161SYSFS_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);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000167
168#ifdef HAS_PPC_PMC_G4
169SYSFS_PMCSETUP(mmcr2, SPRN_MMCR2);
170#endif
171
172#ifdef CONFIG_PPC64
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173SYSFS_PMCSETUP(pmc7, SPRN_PMC7);
174SYSFS_PMCSETUP(pmc8, SPRN_PMC8);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000175
176SYSFS_PMCSETUP(mmcra, SPRN_MMCRA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177SYSFS_PMCSETUP(purr, SPRN_PURR);
Anton Blanchardf0509822006-12-08 17:51:13 +1100178SYSFS_PMCSETUP(spurr, SPRN_SPURR);
Anton Blanchard4c1985572006-12-08 17:46:58 +1100179SYSFS_PMCSETUP(dscr, SPRN_DSCR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000181static 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);
185#endif /* CONFIG_PPC64 */
186
187#ifdef HAS_PPC_PMC_PA6T
Olof Johansson25fc5302007-04-18 16:38:21 +1000188SYSFS_PMCSETUP(pa6t_pmc0, SPRN_PA6T_PMC0);
189SYSFS_PMCSETUP(pa6t_pmc1, SPRN_PA6T_PMC1);
190SYSFS_PMCSETUP(pa6t_pmc2, SPRN_PA6T_PMC2);
191SYSFS_PMCSETUP(pa6t_pmc3, SPRN_PA6T_PMC3);
192SYSFS_PMCSETUP(pa6t_pmc4, SPRN_PA6T_PMC4);
193SYSFS_PMCSETUP(pa6t_pmc5, SPRN_PA6T_PMC5);
Olof Johansson2e1957f2007-09-05 12:09:06 +1000194#ifdef CONFIG_DEBUG_KERNEL
195SYSFS_PMCSETUP(hid0, SPRN_HID0);
196SYSFS_PMCSETUP(hid1, SPRN_HID1);
197SYSFS_PMCSETUP(hid4, SPRN_HID4);
198SYSFS_PMCSETUP(hid5, SPRN_HID5);
199SYSFS_PMCSETUP(ima0, SPRN_PA6T_IMA0);
200SYSFS_PMCSETUP(ima1, SPRN_PA6T_IMA1);
201SYSFS_PMCSETUP(ima2, SPRN_PA6T_IMA2);
202SYSFS_PMCSETUP(ima3, SPRN_PA6T_IMA3);
203SYSFS_PMCSETUP(ima4, SPRN_PA6T_IMA4);
204SYSFS_PMCSETUP(ima5, SPRN_PA6T_IMA5);
205SYSFS_PMCSETUP(ima6, SPRN_PA6T_IMA6);
206SYSFS_PMCSETUP(ima7, SPRN_PA6T_IMA7);
207SYSFS_PMCSETUP(ima8, SPRN_PA6T_IMA8);
208SYSFS_PMCSETUP(ima9, SPRN_PA6T_IMA9);
209SYSFS_PMCSETUP(imaat, SPRN_PA6T_IMAAT);
210SYSFS_PMCSETUP(btcr, SPRN_PA6T_BTCR);
211SYSFS_PMCSETUP(pccr, SPRN_PA6T_PCCR);
212SYSFS_PMCSETUP(rpccr, SPRN_PA6T_RPCCR);
213SYSFS_PMCSETUP(der, SPRN_PA6T_DER);
214SYSFS_PMCSETUP(mer, SPRN_PA6T_MER);
215SYSFS_PMCSETUP(ber, SPRN_PA6T_BER);
216SYSFS_PMCSETUP(ier, SPRN_PA6T_IER);
217SYSFS_PMCSETUP(sier, SPRN_PA6T_SIER);
218SYSFS_PMCSETUP(siar, SPRN_PA6T_SIAR);
219SYSFS_PMCSETUP(tsr0, SPRN_PA6T_TSR0);
220SYSFS_PMCSETUP(tsr1, SPRN_PA6T_TSR1);
221SYSFS_PMCSETUP(tsr2, SPRN_PA6T_TSR2);
222SYSFS_PMCSETUP(tsr3, SPRN_PA6T_TSR3);
223#endif /* CONFIG_DEBUG_KERNEL */
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000224#endif /* HAS_PPC_PMC_PA6T */
Olof Johansson6529c132007-01-28 21:25:57 -0600225
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000226#ifdef HAS_PPC_PMC_IBM
Olof Johansson6529c132007-01-28 21:25:57 -0600227static struct sysdev_attribute ibm_common_attrs[] = {
228 _SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
229 _SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
230};
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000231#endif /* HAS_PPC_PMC_G4 */
Olof Johansson6529c132007-01-28 21:25:57 -0600232
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000233#ifdef HAS_PPC_PMC_G4
234static struct sysdev_attribute g4_common_attrs[] = {
235 _SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
236 _SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
237 _SYSDEV_ATTR(mmcr2, 0600, show_mmcr2, store_mmcr2),
238};
239#endif /* HAS_PPC_PMC_G4 */
240
241static struct sysdev_attribute classic_pmc_attrs[] = {
Olof Johansson6529c132007-01-28 21:25:57 -0600242 _SYSDEV_ATTR(pmc1, 0600, show_pmc1, store_pmc1),
243 _SYSDEV_ATTR(pmc2, 0600, show_pmc2, store_pmc2),
244 _SYSDEV_ATTR(pmc3, 0600, show_pmc3, store_pmc3),
245 _SYSDEV_ATTR(pmc4, 0600, show_pmc4, store_pmc4),
246 _SYSDEV_ATTR(pmc5, 0600, show_pmc5, store_pmc5),
247 _SYSDEV_ATTR(pmc6, 0600, show_pmc6, store_pmc6),
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000248#ifdef CONFIG_PPC64
Olof Johansson6529c132007-01-28 21:25:57 -0600249 _SYSDEV_ATTR(pmc7, 0600, show_pmc7, store_pmc7),
250 _SYSDEV_ATTR(pmc8, 0600, show_pmc8, store_pmc8),
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000251#endif
Olof Johansson6529c132007-01-28 21:25:57 -0600252};
253
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000254#ifdef HAS_PPC_PMC_PA6T
Olof Johansson6529c132007-01-28 21:25:57 -0600255static struct sysdev_attribute pa6t_attrs[] = {
256 _SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
257 _SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
258 _SYSDEV_ATTR(pmc0, 0600, show_pa6t_pmc0, store_pa6t_pmc0),
259 _SYSDEV_ATTR(pmc1, 0600, show_pa6t_pmc1, store_pa6t_pmc1),
260 _SYSDEV_ATTR(pmc2, 0600, show_pa6t_pmc2, store_pa6t_pmc2),
261 _SYSDEV_ATTR(pmc3, 0600, show_pa6t_pmc3, store_pa6t_pmc3),
262 _SYSDEV_ATTR(pmc4, 0600, show_pa6t_pmc4, store_pa6t_pmc4),
263 _SYSDEV_ATTR(pmc5, 0600, show_pa6t_pmc5, store_pa6t_pmc5),
Olof Johansson2e1957f2007-09-05 12:09:06 +1000264#ifdef CONFIG_DEBUG_KERNEL
265 _SYSDEV_ATTR(hid0, 0600, show_hid0, store_hid0),
266 _SYSDEV_ATTR(hid1, 0600, show_hid1, store_hid1),
267 _SYSDEV_ATTR(hid4, 0600, show_hid4, store_hid4),
268 _SYSDEV_ATTR(hid5, 0600, show_hid5, store_hid5),
269 _SYSDEV_ATTR(ima0, 0600, show_ima0, store_ima0),
270 _SYSDEV_ATTR(ima1, 0600, show_ima1, store_ima1),
271 _SYSDEV_ATTR(ima2, 0600, show_ima2, store_ima2),
272 _SYSDEV_ATTR(ima3, 0600, show_ima3, store_ima3),
273 _SYSDEV_ATTR(ima4, 0600, show_ima4, store_ima4),
274 _SYSDEV_ATTR(ima5, 0600, show_ima5, store_ima5),
275 _SYSDEV_ATTR(ima6, 0600, show_ima6, store_ima6),
276 _SYSDEV_ATTR(ima7, 0600, show_ima7, store_ima7),
277 _SYSDEV_ATTR(ima8, 0600, show_ima8, store_ima8),
278 _SYSDEV_ATTR(ima9, 0600, show_ima9, store_ima9),
279 _SYSDEV_ATTR(imaat, 0600, show_imaat, store_imaat),
280 _SYSDEV_ATTR(btcr, 0600, show_btcr, store_btcr),
281 _SYSDEV_ATTR(pccr, 0600, show_pccr, store_pccr),
282 _SYSDEV_ATTR(rpccr, 0600, show_rpccr, store_rpccr),
283 _SYSDEV_ATTR(der, 0600, show_der, store_der),
284 _SYSDEV_ATTR(mer, 0600, show_mer, store_mer),
285 _SYSDEV_ATTR(ber, 0600, show_ber, store_ber),
286 _SYSDEV_ATTR(ier, 0600, show_ier, store_ier),
287 _SYSDEV_ATTR(sier, 0600, show_sier, store_sier),
288 _SYSDEV_ATTR(siar, 0600, show_siar, store_siar),
289 _SYSDEV_ATTR(tsr0, 0600, show_tsr0, store_tsr0),
290 _SYSDEV_ATTR(tsr1, 0600, show_tsr1, store_tsr1),
291 _SYSDEV_ATTR(tsr2, 0600, show_tsr2, store_tsr2),
292 _SYSDEV_ATTR(tsr3, 0600, show_tsr3, store_tsr3),
293#endif /* CONFIG_DEBUG_KERNEL */
Olof Johansson6529c132007-01-28 21:25:57 -0600294};
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000295#endif /* HAS_PPC_PMC_PA6T */
296#endif /* HAS_PPC_PMC_CLASSIC */
Olof Johansson6529c132007-01-28 21:25:57 -0600297
Nathan Lynch9ba19842008-07-27 15:24:51 +1000298static void __cpuinit register_cpu_online(unsigned int cpu)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299{
300 struct cpu *c = &per_cpu(cpu_devices, cpu);
301 struct sys_device *s = &c->sysdev;
Olof Johansson6529c132007-01-28 21:25:57 -0600302 struct sysdev_attribute *attrs, *pmc_attrs;
303 int i, nattrs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000305#ifdef CONFIG_PPC64
Stephen Rothwellad5cb172006-11-13 14:46:04 +1100306 if (!firmware_has_feature(FW_FEATURE_ISERIES) &&
307 cpu_has_feature(CPU_FTR_SMT))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 sysdev_create_file(s, &attr_smt_snooze_delay);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000309#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
311 /* PMC stuff */
Olof Johansson6529c132007-01-28 21:25:57 -0600312 switch (cur_cpu_spec->pmc_type) {
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000313#ifdef HAS_PPC_PMC_IBM
Olof Johansson6529c132007-01-28 21:25:57 -0600314 case PPC_PMC_IBM:
315 attrs = ibm_common_attrs;
316 nattrs = sizeof(ibm_common_attrs) / sizeof(struct sysdev_attribute);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000317 pmc_attrs = classic_pmc_attrs;
Olof Johansson6529c132007-01-28 21:25:57 -0600318 break;
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000319#endif /* HAS_PPC_PMC_IBM */
320#ifdef HAS_PPC_PMC_G4
321 case PPC_PMC_G4:
322 attrs = g4_common_attrs;
323 nattrs = sizeof(g4_common_attrs) / sizeof(struct sysdev_attribute);
324 pmc_attrs = classic_pmc_attrs;
325 break;
326#endif /* HAS_PPC_PMC_G4 */
327#ifdef HAS_PPC_PMC_PA6T
Olof Johansson6529c132007-01-28 21:25:57 -0600328 case PPC_PMC_PA6T:
329 /* PA Semi starts counting at PMC0 */
330 attrs = pa6t_attrs;
331 nattrs = sizeof(pa6t_attrs) / sizeof(struct sysdev_attribute);
332 pmc_attrs = NULL;
333 break;
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000334#endif /* HAS_PPC_PMC_PA6T */
Olof Johansson6529c132007-01-28 21:25:57 -0600335 default:
336 attrs = NULL;
337 nattrs = 0;
338 pmc_attrs = NULL;
339 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
Olof Johansson6529c132007-01-28 21:25:57 -0600341 for (i = 0; i < nattrs; i++)
342 sysdev_create_file(s, &attrs[i]);
343
344 if (pmc_attrs)
345 for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
346 sysdev_create_file(s, &pmc_attrs[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000348#ifdef CONFIG_PPC64
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 if (cpu_has_feature(CPU_FTR_MMCRA))
350 sysdev_create_file(s, &attr_mmcra);
351
Michael Neulingafd05422006-07-28 13:58:37 +1000352 if (cpu_has_feature(CPU_FTR_PURR))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 sysdev_create_file(s, &attr_purr);
Anton Blanchard4c1985572006-12-08 17:46:58 +1100354
Anton Blanchardf0509822006-12-08 17:51:13 +1100355 if (cpu_has_feature(CPU_FTR_SPURR))
356 sysdev_create_file(s, &attr_spurr);
357
Anton Blanchard4c1985572006-12-08 17:46:58 +1100358 if (cpu_has_feature(CPU_FTR_DSCR))
359 sysdev_create_file(s, &attr_dscr);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000360#endif /* CONFIG_PPC64 */
Nathan Lynch124c27d2008-07-27 15:24:55 +1000361
Nathan Lynch93197a32008-12-23 18:55:54 +0000362 cacheinfo_cpu_online(cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363}
364
365#ifdef CONFIG_HOTPLUG_CPU
366static void unregister_cpu_online(unsigned int cpu)
367{
368 struct cpu *c = &per_cpu(cpu_devices, cpu);
369 struct sys_device *s = &c->sysdev;
Olof Johansson6529c132007-01-28 21:25:57 -0600370 struct sysdev_attribute *attrs, *pmc_attrs;
371 int i, nattrs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372
Siddha, Suresh B72486f12006-12-07 02:14:10 +0100373 BUG_ON(!c->hotpluggable);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374
Milton Millera1e0eb12008-11-16 11:44:42 +0000375#ifdef CONFIG_PPC64
Stephen Rothwellad5cb172006-11-13 14:46:04 +1100376 if (!firmware_has_feature(FW_FEATURE_ISERIES) &&
377 cpu_has_feature(CPU_FTR_SMT))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 sysdev_remove_file(s, &attr_smt_snooze_delay);
Milton Millera1e0eb12008-11-16 11:44:42 +0000379#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380
381 /* PMC stuff */
Olof Johansson6529c132007-01-28 21:25:57 -0600382 switch (cur_cpu_spec->pmc_type) {
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000383#ifdef HAS_PPC_PMC_IBM
Olof Johansson6529c132007-01-28 21:25:57 -0600384 case PPC_PMC_IBM:
385 attrs = ibm_common_attrs;
386 nattrs = sizeof(ibm_common_attrs) / sizeof(struct sysdev_attribute);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000387 pmc_attrs = classic_pmc_attrs;
Olof Johansson6529c132007-01-28 21:25:57 -0600388 break;
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000389#endif /* HAS_PPC_PMC_IBM */
390#ifdef HAS_PPC_PMC_G4
391 case PPC_PMC_G4:
392 attrs = g4_common_attrs;
393 nattrs = sizeof(g4_common_attrs) / sizeof(struct sysdev_attribute);
394 pmc_attrs = classic_pmc_attrs;
395 break;
396#endif /* HAS_PPC_PMC_G4 */
397#ifdef HAS_PPC_PMC_PA6T
Olof Johansson6529c132007-01-28 21:25:57 -0600398 case PPC_PMC_PA6T:
399 /* PA Semi starts counting at PMC0 */
400 attrs = pa6t_attrs;
401 nattrs = sizeof(pa6t_attrs) / sizeof(struct sysdev_attribute);
402 pmc_attrs = NULL;
403 break;
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000404#endif /* HAS_PPC_PMC_PA6T */
Olof Johansson6529c132007-01-28 21:25:57 -0600405 default:
406 attrs = NULL;
407 nattrs = 0;
408 pmc_attrs = NULL;
409 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410
Olof Johansson6529c132007-01-28 21:25:57 -0600411 for (i = 0; i < nattrs; i++)
412 sysdev_remove_file(s, &attrs[i]);
413
414 if (pmc_attrs)
415 for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
416 sysdev_remove_file(s, &pmc_attrs[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000418#ifdef CONFIG_PPC64
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 if (cpu_has_feature(CPU_FTR_MMCRA))
420 sysdev_remove_file(s, &attr_mmcra);
421
Michael Neulingafd05422006-07-28 13:58:37 +1000422 if (cpu_has_feature(CPU_FTR_PURR))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 sysdev_remove_file(s, &attr_purr);
Anton Blanchard4c1985572006-12-08 17:46:58 +1100424
Anton Blanchardf0509822006-12-08 17:51:13 +1100425 if (cpu_has_feature(CPU_FTR_SPURR))
426 sysdev_remove_file(s, &attr_spurr);
427
Anton Blanchard4c1985572006-12-08 17:46:58 +1100428 if (cpu_has_feature(CPU_FTR_DSCR))
429 sysdev_remove_file(s, &attr_dscr);
Benjamin Herrenschmidtb950bdd2008-08-18 14:23:51 +1000430#endif /* CONFIG_PPC64 */
Nathan Lynch124c27d2008-07-27 15:24:55 +1000431
Nathan Lynch93197a32008-12-23 18:55:54 +0000432 cacheinfo_cpu_offline(cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433}
Nathan Fontenot12633e82009-11-25 17:23:25 +0000434
435#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
436ssize_t arch_cpu_probe(const char *buf, size_t count)
437{
438 if (ppc_md.cpu_probe)
439 return ppc_md.cpu_probe(buf, count);
440
441 return -EINVAL;
442}
443
444ssize_t arch_cpu_release(const char *buf, size_t count)
445{
446 if (ppc_md.cpu_release)
447 return ppc_md.cpu_release(buf, count);
448
449 return -EINVAL;
450}
451#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
452
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453#endif /* CONFIG_HOTPLUG_CPU */
454
Chandra Seetharaman8c78f302006-07-30 03:03:35 -0700455static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 unsigned long action, void *hcpu)
457{
458 unsigned int cpu = (unsigned int)(long)hcpu;
459
460 switch (action) {
461 case CPU_ONLINE:
Rafael J. Wysocki8bb78442007-05-09 02:35:10 -0700462 case CPU_ONLINE_FROZEN:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 register_cpu_online(cpu);
464 break;
465#ifdef CONFIG_HOTPLUG_CPU
466 case CPU_DEAD:
Rafael J. Wysocki8bb78442007-05-09 02:35:10 -0700467 case CPU_DEAD_FROZEN:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 unregister_cpu_online(cpu);
469 break;
470#endif
471 }
472 return NOTIFY_OK;
473}
474
Chandra Seetharaman8c78f302006-07-30 03:03:35 -0700475static struct notifier_block __cpuinitdata sysfs_cpu_nb = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 .notifier_call = sysfs_cpu_notify,
477};
478
Christian Krafft0344c6c2006-10-24 18:31:24 +0200479static DEFINE_MUTEX(cpu_mutex);
480
481int cpu_add_sysdev_attr(struct sysdev_attribute *attr)
482{
483 int cpu;
484
485 mutex_lock(&cpu_mutex);
486
487 for_each_possible_cpu(cpu) {
488 sysdev_create_file(get_cpu_sysdev(cpu), attr);
489 }
490
491 mutex_unlock(&cpu_mutex);
492 return 0;
493}
494EXPORT_SYMBOL_GPL(cpu_add_sysdev_attr);
495
496int cpu_add_sysdev_attr_group(struct attribute_group *attrs)
497{
498 int cpu;
499 struct sys_device *sysdev;
Olof Johansson6bcc4c02007-09-05 12:43:17 +1000500 int ret;
Christian Krafft0344c6c2006-10-24 18:31:24 +0200501
502 mutex_lock(&cpu_mutex);
503
504 for_each_possible_cpu(cpu) {
505 sysdev = get_cpu_sysdev(cpu);
Olof Johansson6bcc4c02007-09-05 12:43:17 +1000506 ret = sysfs_create_group(&sysdev->kobj, attrs);
507 WARN_ON(ret != 0);
Christian Krafft0344c6c2006-10-24 18:31:24 +0200508 }
509
510 mutex_unlock(&cpu_mutex);
511 return 0;
512}
513EXPORT_SYMBOL_GPL(cpu_add_sysdev_attr_group);
514
515
516void cpu_remove_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_remove_file(get_cpu_sysdev(cpu), attr);
524 }
525
526 mutex_unlock(&cpu_mutex);
527}
528EXPORT_SYMBOL_GPL(cpu_remove_sysdev_attr);
529
530void cpu_remove_sysdev_attr_group(struct attribute_group *attrs)
531{
532 int cpu;
533 struct sys_device *sysdev;
534
535 mutex_lock(&cpu_mutex);
536
537 for_each_possible_cpu(cpu) {
538 sysdev = get_cpu_sysdev(cpu);
539 sysfs_remove_group(&sysdev->kobj, attrs);
540 }
541
542 mutex_unlock(&cpu_mutex);
543}
544EXPORT_SYMBOL_GPL(cpu_remove_sysdev_attr_group);
545
546
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547/* NUMA stuff */
548
549#ifdef CONFIG_NUMA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550static void register_nodes(void)
551{
552 int i;
553
Yasunori Goto0fc44152006-06-27 02:53:38 -0700554 for (i = 0; i < MAX_NUMNODES; i++)
555 register_one_node(i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556}
Jeremy Kerr953039c2006-05-01 12:16:12 -0700557
558int sysfs_add_device_to_node(struct sys_device *dev, int nid)
559{
560 struct node *node = &node_devices[nid];
561 return sysfs_create_link(&node->sysdev.kobj, &dev->kobj,
562 kobject_name(&dev->kobj));
563}
Johannes Berg12654f72007-07-05 19:35:33 +1000564EXPORT_SYMBOL_GPL(sysfs_add_device_to_node);
Jeremy Kerr953039c2006-05-01 12:16:12 -0700565
566void sysfs_remove_device_from_node(struct sys_device *dev, int nid)
567{
568 struct node *node = &node_devices[nid];
569 sysfs_remove_link(&node->sysdev.kobj, kobject_name(&dev->kobj));
570}
Johannes Berg12654f72007-07-05 19:35:33 +1000571EXPORT_SYMBOL_GPL(sysfs_remove_device_from_node);
Jeremy Kerr953039c2006-05-01 12:16:12 -0700572
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573#else
574static void register_nodes(void)
575{
576 return;
577}
Jeremy Kerr953039c2006-05-01 12:16:12 -0700578
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579#endif
580
581/* Only valid if CPU is present. */
Stephen Rothwell00bf6e92008-07-23 10:44:58 +1000582static ssize_t show_physical_id(struct sys_device *dev,
583 struct sysdev_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584{
585 struct cpu *cpu = container_of(dev, struct cpu, sysdev);
586
587 return sprintf(buf, "%d\n", get_hard_smp_processor_id(cpu->sysdev.id));
588}
589static SYSDEV_ATTR(physical_id, 0444, show_physical_id, NULL);
590
591static int __init topology_init(void)
592{
593 int cpu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594
595 register_nodes();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 register_cpu_notifier(&sysfs_cpu_nb);
597
KAMEZAWA Hiroyuki0e551952006-03-28 14:50:51 -0800598 for_each_possible_cpu(cpu) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 struct cpu *c = &per_cpu(cpu_devices, cpu);
600
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601 /*
602 * For now, we just see if the system supports making
603 * the RTAS calls for CPU hotplug. But, there may be a
604 * more comprehensive way to do this for an individual
605 * CPU. For instance, the boot cpu might never be valid
606 * for hotplugging.
607 */
Siddha, Suresh B72486f12006-12-07 02:14:10 +0100608 if (ppc_md.cpu_die)
609 c->hotpluggable = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610
Siddha, Suresh B72486f12006-12-07 02:14:10 +0100611 if (cpu_online(cpu) || c->hotpluggable) {
KAMEZAWA Hiroyuki76b67ed2006-06-27 02:53:41 -0700612 register_cpu(c, cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613
614 sysdev_create_file(&c->sysdev, &attr_physical_id);
615 }
616
617 if (cpu_online(cpu))
618 register_cpu_online(cpu);
619 }
620
621 return 0;
622}
Kevin Corrye9e77ce2007-05-03 03:11:49 +1000623subsys_initcall(topology_init);