Commit | Line | Data |
---|---|---|
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> | |
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> | |
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 |
29 | static 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 | 38 | DEFINE_PER_CPU(long, smt_snooze_delay) = { 100 }; |
1da177e4 | 39 | |
4a0b2b4d AK |
40 | static 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 |
58 | static 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 | ||
67 | static SYSDEV_ATTR(smt_snooze_delay, 0644, show_smt_snooze_delay, | |
68 | store_smt_snooze_delay); | |
69 | ||
1da177e4 LT |
70 | static 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 | ||
93 | static DEFINE_PER_CPU(char, pmcs_enabled); | |
94 | ||
b950bdd0 | 95 | void 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 | 108 | EXPORT_SYMBOL(ppc_enable_pmcs); |
1da177e4 | 109 | |
1da177e4 | 110 | #define SYSFS_PMCSETUP(NAME, ADDRESS) \ |
9a371934 | 111 | static void read_##NAME(void *val) \ |
1da177e4 | 112 | { \ |
ec78c8ac | 113 | *(unsigned long *)val = mfspr(ADDRESS); \ |
1da177e4 | 114 | } \ |
ec78c8ac | 115 | static void write_##NAME(void *val) \ |
1da177e4 | 116 | { \ |
b950bdd0 | 117 | ppc_enable_pmcs(); \ |
9a371934 | 118 | mtspr(ADDRESS, *(unsigned long *)val); \ |
1da177e4 | 119 | } \ |
4a0b2b4d AK |
120 | static 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 | 129 | static 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 |
159 | SYSFS_PMCSETUP(mmcr0, SPRN_MMCR0); |
160 | SYSFS_PMCSETUP(mmcr1, SPRN_MMCR1); | |
1da177e4 LT |
161 | SYSFS_PMCSETUP(pmc1, SPRN_PMC1); |
162 | SYSFS_PMCSETUP(pmc2, SPRN_PMC2); | |
163 | SYSFS_PMCSETUP(pmc3, SPRN_PMC3); | |
164 | SYSFS_PMCSETUP(pmc4, SPRN_PMC4); | |
165 | SYSFS_PMCSETUP(pmc5, SPRN_PMC5); | |
166 | SYSFS_PMCSETUP(pmc6, SPRN_PMC6); | |
b950bdd0 BH |
167 | |
168 | #ifdef HAS_PPC_PMC_G4 | |
169 | SYSFS_PMCSETUP(mmcr2, SPRN_MMCR2); | |
170 | #endif | |
171 | ||
172 | #ifdef CONFIG_PPC64 | |
1da177e4 LT |
173 | SYSFS_PMCSETUP(pmc7, SPRN_PMC7); |
174 | SYSFS_PMCSETUP(pmc8, SPRN_PMC8); | |
b950bdd0 BH |
175 | |
176 | SYSFS_PMCSETUP(mmcra, SPRN_MMCRA); | |
1da177e4 | 177 | SYSFS_PMCSETUP(purr, SPRN_PURR); |
f050982a | 178 | SYSFS_PMCSETUP(spurr, SPRN_SPURR); |
4c198557 | 179 | SYSFS_PMCSETUP(dscr, SPRN_DSCR); |
1da177e4 | 180 | |
b950bdd0 BH |
181 | static SYSDEV_ATTR(mmcra, 0600, show_mmcra, store_mmcra); |
182 | static SYSDEV_ATTR(spurr, 0600, show_spurr, NULL); | |
183 | static SYSDEV_ATTR(dscr, 0600, show_dscr, store_dscr); | |
184 | static SYSDEV_ATTR(purr, 0600, show_purr, store_purr); | |
185 | #endif /* CONFIG_PPC64 */ | |
186 | ||
187 | #ifdef HAS_PPC_PMC_PA6T | |
25fc530e OJ |
188 | SYSFS_PMCSETUP(pa6t_pmc0, SPRN_PA6T_PMC0); |
189 | SYSFS_PMCSETUP(pa6t_pmc1, SPRN_PA6T_PMC1); | |
190 | SYSFS_PMCSETUP(pa6t_pmc2, SPRN_PA6T_PMC2); | |
191 | SYSFS_PMCSETUP(pa6t_pmc3, SPRN_PA6T_PMC3); | |
192 | SYSFS_PMCSETUP(pa6t_pmc4, SPRN_PA6T_PMC4); | |
193 | SYSFS_PMCSETUP(pa6t_pmc5, SPRN_PA6T_PMC5); | |
2e1957fd OJ |
194 | #ifdef CONFIG_DEBUG_KERNEL |
195 | SYSFS_PMCSETUP(hid0, SPRN_HID0); | |
196 | SYSFS_PMCSETUP(hid1, SPRN_HID1); | |
197 | SYSFS_PMCSETUP(hid4, SPRN_HID4); | |
198 | SYSFS_PMCSETUP(hid5, SPRN_HID5); | |
199 | SYSFS_PMCSETUP(ima0, SPRN_PA6T_IMA0); | |
200 | SYSFS_PMCSETUP(ima1, SPRN_PA6T_IMA1); | |
201 | SYSFS_PMCSETUP(ima2, SPRN_PA6T_IMA2); | |
202 | SYSFS_PMCSETUP(ima3, SPRN_PA6T_IMA3); | |
203 | SYSFS_PMCSETUP(ima4, SPRN_PA6T_IMA4); | |
204 | SYSFS_PMCSETUP(ima5, SPRN_PA6T_IMA5); | |
205 | SYSFS_PMCSETUP(ima6, SPRN_PA6T_IMA6); | |
206 | SYSFS_PMCSETUP(ima7, SPRN_PA6T_IMA7); | |
207 | SYSFS_PMCSETUP(ima8, SPRN_PA6T_IMA8); | |
208 | SYSFS_PMCSETUP(ima9, SPRN_PA6T_IMA9); | |
209 | SYSFS_PMCSETUP(imaat, SPRN_PA6T_IMAAT); | |
210 | SYSFS_PMCSETUP(btcr, SPRN_PA6T_BTCR); | |
211 | SYSFS_PMCSETUP(pccr, SPRN_PA6T_PCCR); | |
212 | SYSFS_PMCSETUP(rpccr, SPRN_PA6T_RPCCR); | |
213 | SYSFS_PMCSETUP(der, SPRN_PA6T_DER); | |
214 | SYSFS_PMCSETUP(mer, SPRN_PA6T_MER); | |
215 | SYSFS_PMCSETUP(ber, SPRN_PA6T_BER); | |
216 | SYSFS_PMCSETUP(ier, SPRN_PA6T_IER); | |
217 | SYSFS_PMCSETUP(sier, SPRN_PA6T_SIER); | |
218 | SYSFS_PMCSETUP(siar, SPRN_PA6T_SIAR); | |
219 | SYSFS_PMCSETUP(tsr0, SPRN_PA6T_TSR0); | |
220 | SYSFS_PMCSETUP(tsr1, SPRN_PA6T_TSR1); | |
221 | SYSFS_PMCSETUP(tsr2, SPRN_PA6T_TSR2); | |
222 | SYSFS_PMCSETUP(tsr3, SPRN_PA6T_TSR3); | |
223 | #endif /* CONFIG_DEBUG_KERNEL */ | |
b950bdd0 | 224 | #endif /* HAS_PPC_PMC_PA6T */ |
6529c13d | 225 | |
b950bdd0 | 226 | #ifdef HAS_PPC_PMC_IBM |
6529c13d OJ |
227 | static 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 | }; | |
b950bdd0 BH |
231 | #endif /* HAS_PPC_PMC_G4 */ |
232 | ||
233 | #ifdef HAS_PPC_PMC_G4 | |
234 | static 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 */ | |
6529c13d | 240 | |
b950bdd0 | 241 | static struct sysdev_attribute classic_pmc_attrs[] = { |
6529c13d OJ |
242 | _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), | |
b950bdd0 | 248 | #ifdef CONFIG_PPC64 |
6529c13d OJ |
249 | _SYSDEV_ATTR(pmc7, 0600, show_pmc7, store_pmc7), |
250 | _SYSDEV_ATTR(pmc8, 0600, show_pmc8, store_pmc8), | |
b950bdd0 | 251 | #endif |
6529c13d OJ |
252 | }; |
253 | ||
b950bdd0 | 254 | #ifdef HAS_PPC_PMC_PA6T |
6529c13d OJ |
255 | static 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), | |
2e1957fd OJ |
264 | #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 */ | |
6529c13d | 294 | }; |
b950bdd0 BH |
295 | #endif /* HAS_PPC_PMC_PA6T */ |
296 | #endif /* HAS_PPC_PMC_CLASSIC */ | |
6529c13d | 297 | |
9ba1984e | 298 | static void __cpuinit register_cpu_online(unsigned int cpu) |
1da177e4 LT |
299 | { |
300 | struct cpu *c = &per_cpu(cpu_devices, cpu); | |
301 | struct sys_device *s = &c->sysdev; | |
6529c13d OJ |
302 | struct sysdev_attribute *attrs, *pmc_attrs; |
303 | int i, nattrs; | |
1da177e4 | 304 | |
b950bdd0 | 305 | #ifdef CONFIG_PPC64 |
ad5cb17f SR |
306 | if (!firmware_has_feature(FW_FEATURE_ISERIES) && |
307 | cpu_has_feature(CPU_FTR_SMT)) | |
1da177e4 | 308 | sysdev_create_file(s, &attr_smt_snooze_delay); |
b950bdd0 | 309 | #endif |
1da177e4 LT |
310 | |
311 | /* PMC stuff */ | |
6529c13d | 312 | switch (cur_cpu_spec->pmc_type) { |
b950bdd0 | 313 | #ifdef HAS_PPC_PMC_IBM |
6529c13d OJ |
314 | case PPC_PMC_IBM: |
315 | attrs = ibm_common_attrs; | |
316 | nattrs = sizeof(ibm_common_attrs) / sizeof(struct sysdev_attribute); | |
b950bdd0 | 317 | pmc_attrs = classic_pmc_attrs; |
6529c13d | 318 | break; |
b950bdd0 BH |
319 | #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 | |
6529c13d OJ |
328 | 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; | |
b950bdd0 | 334 | #endif /* HAS_PPC_PMC_PA6T */ |
6529c13d OJ |
335 | default: |
336 | attrs = NULL; | |
337 | nattrs = 0; | |
338 | pmc_attrs = NULL; | |
339 | } | |
340 | ||
341 | for (i = 0; i < nattrs; i++) | |
342 | sysdev_create_file(s, &attrs[i]); | |
1da177e4 | 343 | |
6529c13d OJ |
344 | if (pmc_attrs) |
345 | for (i = 0; i < cur_cpu_spec->num_pmcs; i++) | |
346 | sysdev_create_file(s, &pmc_attrs[i]); | |
1da177e4 | 347 | |
b950bdd0 | 348 | #ifdef CONFIG_PPC64 |
1da177e4 LT |
349 | if (cpu_has_feature(CPU_FTR_MMCRA)) |
350 | sysdev_create_file(s, &attr_mmcra); | |
351 | ||
afd05423 | 352 | if (cpu_has_feature(CPU_FTR_PURR)) |
1da177e4 | 353 | sysdev_create_file(s, &attr_purr); |
4c198557 | 354 | |
f050982a AB |
355 | if (cpu_has_feature(CPU_FTR_SPURR)) |
356 | sysdev_create_file(s, &attr_spurr); | |
357 | ||
4c198557 AB |
358 | if (cpu_has_feature(CPU_FTR_DSCR)) |
359 | sysdev_create_file(s, &attr_dscr); | |
b950bdd0 | 360 | #endif /* CONFIG_PPC64 */ |
124c27d3 | 361 | |
93197a36 | 362 | cacheinfo_cpu_online(cpu); |
1da177e4 LT |
363 | } |
364 | ||
365 | #ifdef CONFIG_HOTPLUG_CPU | |
366 | static void unregister_cpu_online(unsigned int cpu) | |
367 | { | |
368 | struct cpu *c = &per_cpu(cpu_devices, cpu); | |
369 | struct sys_device *s = &c->sysdev; | |
6529c13d OJ |
370 | struct sysdev_attribute *attrs, *pmc_attrs; |
371 | int i, nattrs; | |
1da177e4 | 372 | |
72486f1f | 373 | BUG_ON(!c->hotpluggable); |
1da177e4 | 374 | |
a1e0eb10 | 375 | #ifdef CONFIG_PPC64 |
ad5cb17f SR |
376 | if (!firmware_has_feature(FW_FEATURE_ISERIES) && |
377 | cpu_has_feature(CPU_FTR_SMT)) | |
1da177e4 | 378 | sysdev_remove_file(s, &attr_smt_snooze_delay); |
a1e0eb10 | 379 | #endif |
1da177e4 LT |
380 | |
381 | /* PMC stuff */ | |
6529c13d | 382 | switch (cur_cpu_spec->pmc_type) { |
b950bdd0 | 383 | #ifdef HAS_PPC_PMC_IBM |
6529c13d OJ |
384 | case PPC_PMC_IBM: |
385 | attrs = ibm_common_attrs; | |
386 | nattrs = sizeof(ibm_common_attrs) / sizeof(struct sysdev_attribute); | |
b950bdd0 BH |
387 | pmc_attrs = classic_pmc_attrs; |
388 | break; | |
389 | #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; | |
6529c13d | 395 | break; |
b950bdd0 BH |
396 | #endif /* HAS_PPC_PMC_G4 */ |
397 | #ifdef HAS_PPC_PMC_PA6T | |
6529c13d OJ |
398 | 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; | |
b950bdd0 | 404 | #endif /* HAS_PPC_PMC_PA6T */ |
6529c13d OJ |
405 | default: |
406 | attrs = NULL; | |
407 | nattrs = 0; | |
408 | pmc_attrs = NULL; | |
409 | } | |
1da177e4 | 410 | |
6529c13d OJ |
411 | 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]); | |
1da177e4 | 417 | |
b950bdd0 | 418 | #ifdef CONFIG_PPC64 |
1da177e4 LT |
419 | if (cpu_has_feature(CPU_FTR_MMCRA)) |
420 | sysdev_remove_file(s, &attr_mmcra); | |
421 | ||
afd05423 | 422 | if (cpu_has_feature(CPU_FTR_PURR)) |
1da177e4 | 423 | sysdev_remove_file(s, &attr_purr); |
4c198557 | 424 | |
f050982a AB |
425 | if (cpu_has_feature(CPU_FTR_SPURR)) |
426 | sysdev_remove_file(s, &attr_spurr); | |
427 | ||
4c198557 AB |
428 | if (cpu_has_feature(CPU_FTR_DSCR)) |
429 | sysdev_remove_file(s, &attr_dscr); | |
b950bdd0 | 430 | #endif /* CONFIG_PPC64 */ |
124c27d3 | 431 | |
93197a36 | 432 | cacheinfo_cpu_offline(cpu); |
1da177e4 | 433 | } |
12633e80 NF |
434 | |
435 | #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE | |
436 | ssize_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 | ||
444 | ssize_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 | ||
1da177e4 LT |
453 | #endif /* CONFIG_HOTPLUG_CPU */ |
454 | ||
8c78f307 | 455 | static int __cpuinit sysfs_cpu_notify(struct notifier_block *self, |
1da177e4 LT |
456 | unsigned long action, void *hcpu) |
457 | { | |
458 | unsigned int cpu = (unsigned int)(long)hcpu; | |
459 | ||
460 | switch (action) { | |
461 | case CPU_ONLINE: | |
8bb78442 | 462 | case CPU_ONLINE_FROZEN: |
1da177e4 LT |
463 | register_cpu_online(cpu); |
464 | break; | |
465 | #ifdef CONFIG_HOTPLUG_CPU | |
466 | case CPU_DEAD: | |
8bb78442 | 467 | case CPU_DEAD_FROZEN: |
1da177e4 LT |
468 | unregister_cpu_online(cpu); |
469 | break; | |
470 | #endif | |
471 | } | |
472 | return NOTIFY_OK; | |
473 | } | |
474 | ||
8c78f307 | 475 | static struct notifier_block __cpuinitdata sysfs_cpu_nb = { |
1da177e4 LT |
476 | .notifier_call = sysfs_cpu_notify, |
477 | }; | |
478 | ||
0344c6c5 CK |
479 | static DEFINE_MUTEX(cpu_mutex); |
480 | ||
481 | int 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 | } | |
494 | EXPORT_SYMBOL_GPL(cpu_add_sysdev_attr); | |
495 | ||
496 | int cpu_add_sysdev_attr_group(struct attribute_group *attrs) | |
497 | { | |
498 | int cpu; | |
499 | struct sys_device *sysdev; | |
6bcc4c01 | 500 | int ret; |
0344c6c5 CK |
501 | |
502 | mutex_lock(&cpu_mutex); | |
503 | ||
504 | for_each_possible_cpu(cpu) { | |
505 | sysdev = get_cpu_sysdev(cpu); | |
6bcc4c01 OJ |
506 | ret = sysfs_create_group(&sysdev->kobj, attrs); |
507 | WARN_ON(ret != 0); | |
0344c6c5 CK |
508 | } |
509 | ||
510 | mutex_unlock(&cpu_mutex); | |
511 | return 0; | |
512 | } | |
513 | EXPORT_SYMBOL_GPL(cpu_add_sysdev_attr_group); | |
514 | ||
515 | ||
516 | void 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 | } | |
528 | EXPORT_SYMBOL_GPL(cpu_remove_sysdev_attr); | |
529 | ||
530 | void 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 | } | |
544 | EXPORT_SYMBOL_GPL(cpu_remove_sysdev_attr_group); | |
545 | ||
546 | ||
1da177e4 LT |
547 | /* NUMA stuff */ |
548 | ||
549 | #ifdef CONFIG_NUMA | |
1da177e4 LT |
550 | static void register_nodes(void) |
551 | { | |
552 | int i; | |
553 | ||
0fc44159 YG |
554 | for (i = 0; i < MAX_NUMNODES; i++) |
555 | register_one_node(i); | |
1da177e4 | 556 | } |
953039c8 JK |
557 | |
558 | int 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 | } | |
12654f77 | 564 | EXPORT_SYMBOL_GPL(sysfs_add_device_to_node); |
953039c8 JK |
565 | |
566 | void 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 | } | |
12654f77 | 571 | EXPORT_SYMBOL_GPL(sysfs_remove_device_from_node); |
953039c8 | 572 | |
1da177e4 LT |
573 | #else |
574 | static void register_nodes(void) | |
575 | { | |
576 | return; | |
577 | } | |
953039c8 | 578 | |
1da177e4 LT |
579 | #endif |
580 | ||
581 | /* Only valid if CPU is present. */ | |
00bf6e90 SR |
582 | static ssize_t show_physical_id(struct sys_device *dev, |
583 | struct sysdev_attribute *attr, char *buf) | |
1da177e4 LT |
584 | { |
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 | } | |
589 | static SYSDEV_ATTR(physical_id, 0444, show_physical_id, NULL); | |
590 | ||
591 | static int __init topology_init(void) | |
592 | { | |
593 | int cpu; | |
1da177e4 LT |
594 | |
595 | register_nodes(); | |
1da177e4 LT |
596 | register_cpu_notifier(&sysfs_cpu_nb); |
597 | ||
0e551954 | 598 | for_each_possible_cpu(cpu) { |
1da177e4 LT |
599 | struct cpu *c = &per_cpu(cpu_devices, cpu); |
600 | ||
1da177e4 LT |
601 | /* |
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 | */ | |
72486f1f SS |
608 | if (ppc_md.cpu_die) |
609 | c->hotpluggable = 1; | |
1da177e4 | 610 | |
72486f1f | 611 | if (cpu_online(cpu) || c->hotpluggable) { |
76b67ed9 | 612 | register_cpu(c, cpu); |
1da177e4 LT |
613 | |
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 | } | |
e9e77ce8 | 623 | subsys_initcall(topology_init); |