Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 1 | #include <linux/device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 Gortmaker | 4b16f8e | 2011-07-22 18:24:23 -0400 | [diff] [blame] | 7 | #include <linux/export.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #include <linux/nodemask.h> |
| 9 | #include <linux/cpumask.h> |
| 10 | #include <linux/notifier.h> |
| 11 | |
| 12 | #include <asm/current.h> |
| 13 | #include <asm/processor.h> |
| 14 | #include <asm/cputable.h> |
| 15 | #include <asm/hvcall.h> |
| 16 | #include <asm/prom.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <asm/machdep.h> |
Paul Mackerras | 2249ca9 | 2005-11-07 13:18:13 +1100 | [diff] [blame] | 18 | #include <asm/smp.h> |
Paul Mackerras | a6dbf93 | 2009-09-09 01:26:03 +0000 | [diff] [blame] | 19 | #include <asm/pmc.h> |
Madhavan Srinivasan | d1211af | 2013-10-02 00:34:10 +0530 | [diff] [blame] | 20 | #include <asm/firmware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
Nathan Lynch | 93197a3 | 2008-12-23 18:55:54 +0000 | [diff] [blame] | 22 | #include "cacheinfo.h" |
| 23 | |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 24 | #ifdef CONFIG_PPC64 |
| 25 | #include <asm/paca.h> |
| 26 | #include <asm/lppaca.h> |
| 27 | #endif |
| 28 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | static DEFINE_PER_CPU(struct cpu, cpu_devices); |
| 30 | |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 31 | /* |
| 32 | * SMT snooze delay stuff, 64-bit only for now |
| 33 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 35 | #ifdef CONFIG_PPC64 |
| 36 | |
Anton Blanchard | 0ddd3e7 | 2006-09-22 20:30:14 +1000 | [diff] [blame] | 37 | /* Time in microseconds we delay before sleeping in the idle loop */ |
Daniel Axtens | 34852ed | 2016-05-18 11:16:49 +1000 | [diff] [blame] | 38 | static DEFINE_PER_CPU(long, smt_snooze_delay) = { 100 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 40 | static ssize_t store_smt_snooze_delay(struct device *dev, |
| 41 | struct device_attribute *attr, |
Andi Kleen | 4a0b2b4 | 2008-07-01 18:48:41 +0200 | [diff] [blame] | 42 | const char *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | size_t count) |
| 44 | { |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 45 | struct cpu *cpu = container_of(dev, struct cpu, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | ssize_t ret; |
Anton Blanchard | b878dc0 | 2010-05-16 20:02:39 +0000 | [diff] [blame] | 47 | long snooze; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
Anton Blanchard | b878dc0 | 2010-05-16 20:02:39 +0000 | [diff] [blame] | 49 | ret = sscanf(buf, "%ld", &snooze); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | if (ret != 1) |
| 51 | return -EINVAL; |
| 52 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 53 | per_cpu(smt_snooze_delay, cpu->dev.id) = snooze; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | return count; |
| 55 | } |
| 56 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 57 | static ssize_t show_smt_snooze_delay(struct device *dev, |
| 58 | struct device_attribute *attr, |
Andi Kleen | 4a0b2b4 | 2008-07-01 18:48:41 +0200 | [diff] [blame] | 59 | char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | { |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 61 | struct cpu *cpu = container_of(dev, struct cpu, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 63 | return sprintf(buf, "%ld\n", per_cpu(smt_snooze_delay, cpu->dev.id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | } |
| 65 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 66 | static DEVICE_ATTR(smt_snooze_delay, 0644, show_smt_snooze_delay, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | store_smt_snooze_delay); |
| 68 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | static int __init setup_smt_snooze_delay(char *str) |
| 70 | { |
| 71 | unsigned int cpu; |
Anton Blanchard | b878dc0 | 2010-05-16 20:02:39 +0000 | [diff] [blame] | 72 | long snooze; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
| 74 | if (!cpu_has_feature(CPU_FTR_SMT)) |
| 75 | return 1; |
| 76 | |
Anton Blanchard | b878dc0 | 2010-05-16 20:02:39 +0000 | [diff] [blame] | 77 | snooze = simple_strtol(str, NULL, 10); |
| 78 | for_each_possible_cpu(cpu) |
| 79 | per_cpu(smt_snooze_delay, cpu) = snooze; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | |
| 81 | return 1; |
| 82 | } |
| 83 | __setup("smt-snooze-delay=", setup_smt_snooze_delay); |
| 84 | |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 85 | #endif /* CONFIG_PPC64 */ |
Michael Ellerman | 180a336 | 2005-08-09 11:13:36 +1000 | [diff] [blame] | 86 | |
Wang Dongsheng | a718948 | 2013-12-17 16:17:02 +0800 | [diff] [blame] | 87 | #ifdef CONFIG_PPC_FSL_BOOK3E |
| 88 | #define MAX_BIT 63 |
| 89 | |
| 90 | static u64 pw20_wt; |
| 91 | static u64 altivec_idle_wt; |
| 92 | |
| 93 | static unsigned int get_idle_ticks_bit(u64 ns) |
| 94 | { |
| 95 | u64 cycle; |
| 96 | |
| 97 | if (ns >= 10000) |
| 98 | cycle = div_u64(ns + 500, 1000) * tb_ticks_per_usec; |
| 99 | else |
| 100 | cycle = div_u64(ns * tb_ticks_per_usec, 1000); |
| 101 | |
| 102 | if (!cycle) |
| 103 | return 0; |
| 104 | |
| 105 | return ilog2(cycle); |
| 106 | } |
| 107 | |
| 108 | static void do_show_pwrmgtcr0(void *val) |
| 109 | { |
| 110 | u32 *value = val; |
| 111 | |
| 112 | *value = mfspr(SPRN_PWRMGTCR0); |
| 113 | } |
| 114 | |
| 115 | static ssize_t show_pw20_state(struct device *dev, |
| 116 | struct device_attribute *attr, char *buf) |
| 117 | { |
| 118 | u32 value; |
| 119 | unsigned int cpu = dev->id; |
| 120 | |
| 121 | smp_call_function_single(cpu, do_show_pwrmgtcr0, &value, 1); |
| 122 | |
| 123 | value &= PWRMGTCR0_PW20_WAIT; |
| 124 | |
| 125 | return sprintf(buf, "%u\n", value ? 1 : 0); |
| 126 | } |
| 127 | |
| 128 | static void do_store_pw20_state(void *val) |
| 129 | { |
| 130 | u32 *value = val; |
| 131 | u32 pw20_state; |
| 132 | |
| 133 | pw20_state = mfspr(SPRN_PWRMGTCR0); |
| 134 | |
| 135 | if (*value) |
| 136 | pw20_state |= PWRMGTCR0_PW20_WAIT; |
| 137 | else |
| 138 | pw20_state &= ~PWRMGTCR0_PW20_WAIT; |
| 139 | |
| 140 | mtspr(SPRN_PWRMGTCR0, pw20_state); |
| 141 | } |
| 142 | |
| 143 | static ssize_t store_pw20_state(struct device *dev, |
| 144 | struct device_attribute *attr, |
| 145 | const char *buf, size_t count) |
| 146 | { |
| 147 | u32 value; |
| 148 | unsigned int cpu = dev->id; |
| 149 | |
| 150 | if (kstrtou32(buf, 0, &value)) |
| 151 | return -EINVAL; |
| 152 | |
| 153 | if (value > 1) |
| 154 | return -EINVAL; |
| 155 | |
| 156 | smp_call_function_single(cpu, do_store_pw20_state, &value, 1); |
| 157 | |
| 158 | return count; |
| 159 | } |
| 160 | |
| 161 | static ssize_t show_pw20_wait_time(struct device *dev, |
| 162 | struct device_attribute *attr, char *buf) |
| 163 | { |
| 164 | u32 value; |
| 165 | u64 tb_cycle = 1; |
| 166 | u64 time; |
| 167 | |
| 168 | unsigned int cpu = dev->id; |
| 169 | |
| 170 | if (!pw20_wt) { |
| 171 | smp_call_function_single(cpu, do_show_pwrmgtcr0, &value, 1); |
| 172 | value = (value & PWRMGTCR0_PW20_ENT) >> |
| 173 | PWRMGTCR0_PW20_ENT_SHIFT; |
| 174 | |
| 175 | tb_cycle = (tb_cycle << (MAX_BIT - value + 1)); |
| 176 | /* convert ms to ns */ |
| 177 | if (tb_ticks_per_usec > 1000) { |
| 178 | time = div_u64(tb_cycle, tb_ticks_per_usec / 1000); |
| 179 | } else { |
| 180 | u32 rem_us; |
| 181 | |
| 182 | time = div_u64_rem(tb_cycle, tb_ticks_per_usec, |
| 183 | &rem_us); |
| 184 | time = time * 1000 + rem_us * 1000 / tb_ticks_per_usec; |
| 185 | } |
| 186 | } else { |
| 187 | time = pw20_wt; |
| 188 | } |
| 189 | |
| 190 | return sprintf(buf, "%llu\n", time > 0 ? time : 0); |
| 191 | } |
| 192 | |
| 193 | static void set_pw20_wait_entry_bit(void *val) |
| 194 | { |
| 195 | u32 *value = val; |
| 196 | u32 pw20_idle; |
| 197 | |
| 198 | pw20_idle = mfspr(SPRN_PWRMGTCR0); |
| 199 | |
| 200 | /* Set Automatic PW20 Core Idle Count */ |
| 201 | /* clear count */ |
| 202 | pw20_idle &= ~PWRMGTCR0_PW20_ENT; |
| 203 | |
| 204 | /* set count */ |
| 205 | pw20_idle |= ((MAX_BIT - *value) << PWRMGTCR0_PW20_ENT_SHIFT); |
| 206 | |
| 207 | mtspr(SPRN_PWRMGTCR0, pw20_idle); |
| 208 | } |
| 209 | |
| 210 | static ssize_t store_pw20_wait_time(struct device *dev, |
| 211 | struct device_attribute *attr, |
| 212 | const char *buf, size_t count) |
| 213 | { |
| 214 | u32 entry_bit; |
| 215 | u64 value; |
| 216 | |
| 217 | unsigned int cpu = dev->id; |
| 218 | |
| 219 | if (kstrtou64(buf, 0, &value)) |
| 220 | return -EINVAL; |
| 221 | |
| 222 | if (!value) |
| 223 | return -EINVAL; |
| 224 | |
| 225 | entry_bit = get_idle_ticks_bit(value); |
| 226 | if (entry_bit > MAX_BIT) |
| 227 | return -EINVAL; |
| 228 | |
| 229 | pw20_wt = value; |
| 230 | |
| 231 | smp_call_function_single(cpu, set_pw20_wait_entry_bit, |
| 232 | &entry_bit, 1); |
| 233 | |
| 234 | return count; |
| 235 | } |
| 236 | |
| 237 | static ssize_t show_altivec_idle(struct device *dev, |
| 238 | struct device_attribute *attr, char *buf) |
| 239 | { |
| 240 | u32 value; |
| 241 | unsigned int cpu = dev->id; |
| 242 | |
| 243 | smp_call_function_single(cpu, do_show_pwrmgtcr0, &value, 1); |
| 244 | |
| 245 | value &= PWRMGTCR0_AV_IDLE_PD_EN; |
| 246 | |
| 247 | return sprintf(buf, "%u\n", value ? 1 : 0); |
| 248 | } |
| 249 | |
| 250 | static void do_store_altivec_idle(void *val) |
| 251 | { |
| 252 | u32 *value = val; |
| 253 | u32 altivec_idle; |
| 254 | |
| 255 | altivec_idle = mfspr(SPRN_PWRMGTCR0); |
| 256 | |
| 257 | if (*value) |
| 258 | altivec_idle |= PWRMGTCR0_AV_IDLE_PD_EN; |
| 259 | else |
| 260 | altivec_idle &= ~PWRMGTCR0_AV_IDLE_PD_EN; |
| 261 | |
| 262 | mtspr(SPRN_PWRMGTCR0, altivec_idle); |
| 263 | } |
| 264 | |
| 265 | static ssize_t store_altivec_idle(struct device *dev, |
| 266 | struct device_attribute *attr, |
| 267 | const char *buf, size_t count) |
| 268 | { |
| 269 | u32 value; |
| 270 | unsigned int cpu = dev->id; |
| 271 | |
| 272 | if (kstrtou32(buf, 0, &value)) |
| 273 | return -EINVAL; |
| 274 | |
| 275 | if (value > 1) |
| 276 | return -EINVAL; |
| 277 | |
| 278 | smp_call_function_single(cpu, do_store_altivec_idle, &value, 1); |
| 279 | |
| 280 | return count; |
| 281 | } |
| 282 | |
| 283 | static ssize_t show_altivec_idle_wait_time(struct device *dev, |
| 284 | struct device_attribute *attr, char *buf) |
| 285 | { |
| 286 | u32 value; |
| 287 | u64 tb_cycle = 1; |
| 288 | u64 time; |
| 289 | |
| 290 | unsigned int cpu = dev->id; |
| 291 | |
| 292 | if (!altivec_idle_wt) { |
| 293 | smp_call_function_single(cpu, do_show_pwrmgtcr0, &value, 1); |
| 294 | value = (value & PWRMGTCR0_AV_IDLE_CNT) >> |
| 295 | PWRMGTCR0_AV_IDLE_CNT_SHIFT; |
| 296 | |
| 297 | tb_cycle = (tb_cycle << (MAX_BIT - value + 1)); |
| 298 | /* convert ms to ns */ |
| 299 | if (tb_ticks_per_usec > 1000) { |
| 300 | time = div_u64(tb_cycle, tb_ticks_per_usec / 1000); |
| 301 | } else { |
| 302 | u32 rem_us; |
| 303 | |
| 304 | time = div_u64_rem(tb_cycle, tb_ticks_per_usec, |
| 305 | &rem_us); |
| 306 | time = time * 1000 + rem_us * 1000 / tb_ticks_per_usec; |
| 307 | } |
| 308 | } else { |
| 309 | time = altivec_idle_wt; |
| 310 | } |
| 311 | |
| 312 | return sprintf(buf, "%llu\n", time > 0 ? time : 0); |
| 313 | } |
| 314 | |
| 315 | static void set_altivec_idle_wait_entry_bit(void *val) |
| 316 | { |
| 317 | u32 *value = val; |
| 318 | u32 altivec_idle; |
| 319 | |
| 320 | altivec_idle = mfspr(SPRN_PWRMGTCR0); |
| 321 | |
| 322 | /* Set Automatic AltiVec Idle Count */ |
| 323 | /* clear count */ |
| 324 | altivec_idle &= ~PWRMGTCR0_AV_IDLE_CNT; |
| 325 | |
| 326 | /* set count */ |
| 327 | altivec_idle |= ((MAX_BIT - *value) << PWRMGTCR0_AV_IDLE_CNT_SHIFT); |
| 328 | |
| 329 | mtspr(SPRN_PWRMGTCR0, altivec_idle); |
| 330 | } |
| 331 | |
| 332 | static ssize_t store_altivec_idle_wait_time(struct device *dev, |
| 333 | struct device_attribute *attr, |
| 334 | const char *buf, size_t count) |
| 335 | { |
| 336 | u32 entry_bit; |
| 337 | u64 value; |
| 338 | |
| 339 | unsigned int cpu = dev->id; |
| 340 | |
| 341 | if (kstrtou64(buf, 0, &value)) |
| 342 | return -EINVAL; |
| 343 | |
| 344 | if (!value) |
| 345 | return -EINVAL; |
| 346 | |
| 347 | entry_bit = get_idle_ticks_bit(value); |
| 348 | if (entry_bit > MAX_BIT) |
| 349 | return -EINVAL; |
| 350 | |
| 351 | altivec_idle_wt = value; |
| 352 | |
| 353 | smp_call_function_single(cpu, set_altivec_idle_wait_entry_bit, |
| 354 | &entry_bit, 1); |
| 355 | |
| 356 | return count; |
| 357 | } |
| 358 | |
| 359 | /* |
| 360 | * Enable/Disable interface: |
| 361 | * 0, disable. 1, enable. |
| 362 | */ |
| 363 | static DEVICE_ATTR(pw20_state, 0600, show_pw20_state, store_pw20_state); |
| 364 | static DEVICE_ATTR(altivec_idle, 0600, show_altivec_idle, store_altivec_idle); |
| 365 | |
| 366 | /* |
| 367 | * Set wait time interface:(Nanosecond) |
| 368 | * Example: Base on TBfreq is 41MHZ. |
| 369 | * 1~48(ns): TB[63] |
| 370 | * 49~97(ns): TB[62] |
| 371 | * 98~195(ns): TB[61] |
| 372 | * 196~390(ns): TB[60] |
| 373 | * 391~780(ns): TB[59] |
| 374 | * 781~1560(ns): TB[58] |
| 375 | * ... |
| 376 | */ |
| 377 | static DEVICE_ATTR(pw20_wait_time, 0600, |
| 378 | show_pw20_wait_time, |
| 379 | store_pw20_wait_time); |
| 380 | static DEVICE_ATTR(altivec_idle_wait_time, 0600, |
| 381 | show_altivec_idle_wait_time, |
| 382 | store_altivec_idle_wait_time); |
| 383 | #endif |
| 384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | /* |
| 386 | * Enabling PMCs will slow partition context switch times so we only do |
| 387 | * it the first time we write to the PMCs. |
| 388 | */ |
| 389 | |
| 390 | static DEFINE_PER_CPU(char, pmcs_enabled); |
| 391 | |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 392 | void ppc_enable_pmcs(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | { |
Paul Mackerras | a6dbf93 | 2009-09-09 01:26:03 +0000 | [diff] [blame] | 394 | ppc_set_pmu_inuse(1); |
| 395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | /* Only need to enable them once */ |
Christoph Lameter | 69111ba | 2014-10-21 15:23:25 -0500 | [diff] [blame] | 397 | if (__this_cpu_read(pmcs_enabled)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | return; |
| 399 | |
Christoph Lameter | 69111ba | 2014-10-21 15:23:25 -0500 | [diff] [blame] | 400 | __this_cpu_write(pmcs_enabled, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | |
Michael Ellerman | 180a336 | 2005-08-09 11:13:36 +1000 | [diff] [blame] | 402 | if (ppc_md.enable_pmcs) |
| 403 | ppc_md.enable_pmcs(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | } |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 405 | EXPORT_SYMBOL(ppc_enable_pmcs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
Sam bobroff | 39a360e | 2014-05-21 16:32:37 +1000 | [diff] [blame] | 407 | #define __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, EXTRA) \ |
Rusty Russell | 9a37193 | 2009-03-11 12:20:05 +0000 | [diff] [blame] | 408 | static void read_##NAME(void *val) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | { \ |
Benjamin Herrenschmidt | ec78c8a | 2009-03-26 19:29:06 +0000 | [diff] [blame] | 410 | *(unsigned long *)val = mfspr(ADDRESS); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | } \ |
Benjamin Herrenschmidt | ec78c8a | 2009-03-26 19:29:06 +0000 | [diff] [blame] | 412 | static void write_##NAME(void *val) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | { \ |
Madhavan Srinivasan | fd7e429 | 2013-10-03 14:57:35 +0530 | [diff] [blame] | 414 | EXTRA; \ |
Rusty Russell | 9a37193 | 2009-03-11 12:20:05 +0000 | [diff] [blame] | 415 | mtspr(ADDRESS, *(unsigned long *)val); \ |
Sam bobroff | 39a360e | 2014-05-21 16:32:37 +1000 | [diff] [blame] | 416 | } |
| 417 | |
| 418 | #define __SYSFS_SPRSETUP_SHOW_STORE(NAME) \ |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 419 | static ssize_t show_##NAME(struct device *dev, \ |
| 420 | struct device_attribute *attr, \ |
Andi Kleen | 4a0b2b4 | 2008-07-01 18:48:41 +0200 | [diff] [blame] | 421 | char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | { \ |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 423 | struct cpu *cpu = container_of(dev, struct cpu, dev); \ |
Rusty Russell | 9a37193 | 2009-03-11 12:20:05 +0000 | [diff] [blame] | 424 | unsigned long val; \ |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 425 | smp_call_function_single(cpu->dev.id, read_##NAME, &val, 1); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | return sprintf(buf, "%lx\n", val); \ |
| 427 | } \ |
Adrian Bunk | 3ff6eec | 2008-01-24 22:16:20 +0100 | [diff] [blame] | 428 | static ssize_t __used \ |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 429 | store_##NAME(struct device *dev, struct device_attribute *attr, \ |
Andi Kleen | 4a0b2b4 | 2008-07-01 18:48:41 +0200 | [diff] [blame] | 430 | const char *buf, size_t count) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | { \ |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 432 | struct cpu *cpu = container_of(dev, struct cpu, dev); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | unsigned long val; \ |
| 434 | int ret = sscanf(buf, "%lx", &val); \ |
| 435 | if (ret != 1) \ |
| 436 | return -EINVAL; \ |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 437 | smp_call_function_single(cpu->dev.id, write_##NAME, &val, 1); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | return count; \ |
| 439 | } |
| 440 | |
Sam bobroff | 39a360e | 2014-05-21 16:32:37 +1000 | [diff] [blame] | 441 | #define SYSFS_PMCSETUP(NAME, ADDRESS) \ |
| 442 | __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, ppc_enable_pmcs()) \ |
| 443 | __SYSFS_SPRSETUP_SHOW_STORE(NAME) |
| 444 | #define SYSFS_SPRSETUP(NAME, ADDRESS) \ |
| 445 | __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, ) \ |
| 446 | __SYSFS_SPRSETUP_SHOW_STORE(NAME) |
| 447 | |
| 448 | #define SYSFS_SPRSETUP_SHOW_STORE(NAME) \ |
| 449 | __SYSFS_SPRSETUP_SHOW_STORE(NAME) |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 450 | |
| 451 | /* Let's define all possible registers, we'll only hook up the ones |
| 452 | * that are implemented on the current processor |
| 453 | */ |
| 454 | |
Kumar Gala | 33a7f12 | 2008-09-18 17:50:42 -0500 | [diff] [blame] | 455 | #if defined(CONFIG_PPC64) |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 456 | #define HAS_PPC_PMC_CLASSIC 1 |
| 457 | #define HAS_PPC_PMC_IBM 1 |
| 458 | #define HAS_PPC_PMC_PA6T 1 |
Kumar Gala | 33a7f12 | 2008-09-18 17:50:42 -0500 | [diff] [blame] | 459 | #elif defined(CONFIG_6xx) |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 460 | #define HAS_PPC_PMC_CLASSIC 1 |
| 461 | #define HAS_PPC_PMC_IBM 1 |
| 462 | #define HAS_PPC_PMC_G4 1 |
| 463 | #endif |
| 464 | |
| 465 | |
| 466 | #ifdef HAS_PPC_PMC_CLASSIC |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | SYSFS_PMCSETUP(mmcr0, SPRN_MMCR0); |
| 468 | SYSFS_PMCSETUP(mmcr1, SPRN_MMCR1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | SYSFS_PMCSETUP(pmc1, SPRN_PMC1); |
| 470 | SYSFS_PMCSETUP(pmc2, SPRN_PMC2); |
| 471 | SYSFS_PMCSETUP(pmc3, SPRN_PMC3); |
| 472 | SYSFS_PMCSETUP(pmc4, SPRN_PMC4); |
| 473 | SYSFS_PMCSETUP(pmc5, SPRN_PMC5); |
| 474 | SYSFS_PMCSETUP(pmc6, SPRN_PMC6); |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 475 | |
| 476 | #ifdef HAS_PPC_PMC_G4 |
| 477 | SYSFS_PMCSETUP(mmcr2, SPRN_MMCR2); |
| 478 | #endif |
| 479 | |
| 480 | #ifdef CONFIG_PPC64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | SYSFS_PMCSETUP(pmc7, SPRN_PMC7); |
| 482 | SYSFS_PMCSETUP(pmc8, SPRN_PMC8); |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 483 | |
| 484 | SYSFS_PMCSETUP(mmcra, SPRN_MMCRA); |
Madhavan Srinivasan | fd7e429 | 2013-10-03 14:57:35 +0530 | [diff] [blame] | 485 | SYSFS_SPRSETUP(purr, SPRN_PURR); |
| 486 | SYSFS_SPRSETUP(spurr, SPRN_SPURR); |
Madhavan Srinivasan | fd7e429 | 2013-10-03 14:57:35 +0530 | [diff] [blame] | 487 | SYSFS_SPRSETUP(pir, SPRN_PIR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | |
Madhavan Srinivasan | d1211af | 2013-10-02 00:34:10 +0530 | [diff] [blame] | 489 | /* |
| 490 | Lets only enable read for phyp resources and |
| 491 | enable write when needed with a separate function. |
| 492 | Lets be conservative and default to pseries. |
| 493 | */ |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 494 | static DEVICE_ATTR(mmcra, 0600, show_mmcra, store_mmcra); |
Benjamin Herrenschmidt | d5dae72 | 2013-05-06 15:02:40 +1000 | [diff] [blame] | 495 | static DEVICE_ATTR(spurr, 0400, show_spurr, NULL); |
Madhavan Srinivasan | d1211af | 2013-10-02 00:34:10 +0530 | [diff] [blame] | 496 | static DEVICE_ATTR(purr, 0400, show_purr, store_purr); |
Linus Torvalds | 7affca3 | 2012-01-07 12:03:30 -0800 | [diff] [blame] | 497 | static DEVICE_ATTR(pir, 0400, show_pir, NULL); |
Alexey Kardashevskiy | efcac65 | 2011-03-02 15:18:48 +0000 | [diff] [blame] | 498 | |
Anshuman Khandual | d3cb06e | 2015-05-21 12:13:04 +0530 | [diff] [blame] | 499 | /* |
| 500 | * This is the system wide DSCR register default value. Any |
| 501 | * change to this default value through the sysfs interface |
| 502 | * will update all per cpu DSCR default values across the |
| 503 | * system stored in their respective PACA structures. |
| 504 | */ |
Sam bobroff | 1739ea9 | 2014-05-21 16:32:38 +1000 | [diff] [blame] | 505 | static unsigned long dscr_default; |
| 506 | |
Anshuman Khandual | d3cb06e | 2015-05-21 12:13:04 +0530 | [diff] [blame] | 507 | /** |
| 508 | * read_dscr() - Fetch the cpu specific DSCR default |
| 509 | * @val: Returned cpu specific DSCR default value |
| 510 | * |
| 511 | * This function returns the per cpu DSCR default value |
| 512 | * for any cpu which is contained in it's PACA structure. |
| 513 | */ |
Sam bobroff | 1739ea9 | 2014-05-21 16:32:38 +1000 | [diff] [blame] | 514 | static void read_dscr(void *val) |
| 515 | { |
| 516 | *(unsigned long *)val = get_paca()->dscr_default; |
| 517 | } |
| 518 | |
Anshuman Khandual | d3cb06e | 2015-05-21 12:13:04 +0530 | [diff] [blame] | 519 | |
| 520 | /** |
| 521 | * write_dscr() - Update the cpu specific DSCR default |
| 522 | * @val: New cpu specific DSCR default value to update |
| 523 | * |
| 524 | * This function updates the per cpu DSCR default value |
| 525 | * for any cpu which is contained in it's PACA structure. |
| 526 | */ |
Sam bobroff | 1739ea9 | 2014-05-21 16:32:38 +1000 | [diff] [blame] | 527 | static void write_dscr(void *val) |
| 528 | { |
| 529 | get_paca()->dscr_default = *(unsigned long *)val; |
| 530 | if (!current->thread.dscr_inherit) { |
| 531 | current->thread.dscr = *(unsigned long *)val; |
| 532 | mtspr(SPRN_DSCR, *(unsigned long *)val); |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | SYSFS_SPRSETUP_SHOW_STORE(dscr); |
| 537 | static DEVICE_ATTR(dscr, 0600, show_dscr, store_dscr); |
Alexey Kardashevskiy | efcac65 | 2011-03-02 15:18:48 +0000 | [diff] [blame] | 538 | |
Madhavan Srinivasan | d1211af | 2013-10-02 00:34:10 +0530 | [diff] [blame] | 539 | static void add_write_permission_dev_attr(struct device_attribute *attr) |
| 540 | { |
| 541 | attr->attr.mode |= 0200; |
| 542 | } |
| 543 | |
Anshuman Khandual | d3cb06e | 2015-05-21 12:13:04 +0530 | [diff] [blame] | 544 | /** |
| 545 | * show_dscr_default() - Fetch the system wide DSCR default |
| 546 | * @dev: Device structure |
| 547 | * @attr: Device attribute structure |
| 548 | * @buf: Interface buffer |
| 549 | * |
| 550 | * This function returns the system wide DSCR default value. |
| 551 | */ |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 552 | static ssize_t show_dscr_default(struct device *dev, |
| 553 | struct device_attribute *attr, char *buf) |
Alexey Kardashevskiy | efcac65 | 2011-03-02 15:18:48 +0000 | [diff] [blame] | 554 | { |
| 555 | return sprintf(buf, "%lx\n", dscr_default); |
| 556 | } |
| 557 | |
Anshuman Khandual | d3cb06e | 2015-05-21 12:13:04 +0530 | [diff] [blame] | 558 | /** |
| 559 | * store_dscr_default() - Update the system wide DSCR default |
| 560 | * @dev: Device structure |
| 561 | * @attr: Device attribute structure |
| 562 | * @buf: Interface buffer |
| 563 | * @count: Size of the update |
| 564 | * |
| 565 | * This function updates the system wide DSCR default value. |
| 566 | */ |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 567 | static ssize_t __used store_dscr_default(struct device *dev, |
| 568 | struct device_attribute *attr, const char *buf, |
Alexey Kardashevskiy | efcac65 | 2011-03-02 15:18:48 +0000 | [diff] [blame] | 569 | size_t count) |
| 570 | { |
| 571 | unsigned long val; |
| 572 | int ret = 0; |
| 573 | |
| 574 | ret = sscanf(buf, "%lx", &val); |
| 575 | if (ret != 1) |
| 576 | return -EINVAL; |
| 577 | dscr_default = val; |
| 578 | |
Sam bobroff | 1739ea9 | 2014-05-21 16:32:38 +1000 | [diff] [blame] | 579 | on_each_cpu(write_dscr, &val, 1); |
Anton Blanchard | 1b6ca2a | 2012-09-03 16:47:56 +0000 | [diff] [blame] | 580 | |
Alexey Kardashevskiy | efcac65 | 2011-03-02 15:18:48 +0000 | [diff] [blame] | 581 | return count; |
| 582 | } |
| 583 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 584 | static DEVICE_ATTR(dscr_default, 0600, |
Alexey Kardashevskiy | efcac65 | 2011-03-02 15:18:48 +0000 | [diff] [blame] | 585 | show_dscr_default, store_dscr_default); |
| 586 | |
| 587 | static void sysfs_create_dscr_default(void) |
| 588 | { |
| 589 | int err = 0; |
| 590 | if (cpu_has_feature(CPU_FTR_DSCR)) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 591 | err = device_create_file(cpu_subsys.dev_root, &dev_attr_dscr_default); |
Alexey Kardashevskiy | efcac65 | 2011-03-02 15:18:48 +0000 | [diff] [blame] | 592 | } |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 593 | #endif /* CONFIG_PPC64 */ |
| 594 | |
| 595 | #ifdef HAS_PPC_PMC_PA6T |
Olof Johansson | 25fc530 | 2007-04-18 16:38:21 +1000 | [diff] [blame] | 596 | SYSFS_PMCSETUP(pa6t_pmc0, SPRN_PA6T_PMC0); |
| 597 | SYSFS_PMCSETUP(pa6t_pmc1, SPRN_PA6T_PMC1); |
| 598 | SYSFS_PMCSETUP(pa6t_pmc2, SPRN_PA6T_PMC2); |
| 599 | SYSFS_PMCSETUP(pa6t_pmc3, SPRN_PA6T_PMC3); |
| 600 | SYSFS_PMCSETUP(pa6t_pmc4, SPRN_PA6T_PMC4); |
| 601 | SYSFS_PMCSETUP(pa6t_pmc5, SPRN_PA6T_PMC5); |
Olof Johansson | 2e1957f | 2007-09-05 12:09:06 +1000 | [diff] [blame] | 602 | #ifdef CONFIG_DEBUG_KERNEL |
Madhavan Srinivasan | fd7e429 | 2013-10-03 14:57:35 +0530 | [diff] [blame] | 603 | SYSFS_SPRSETUP(hid0, SPRN_HID0); |
| 604 | SYSFS_SPRSETUP(hid1, SPRN_HID1); |
| 605 | SYSFS_SPRSETUP(hid4, SPRN_HID4); |
| 606 | SYSFS_SPRSETUP(hid5, SPRN_HID5); |
| 607 | SYSFS_SPRSETUP(ima0, SPRN_PA6T_IMA0); |
| 608 | SYSFS_SPRSETUP(ima1, SPRN_PA6T_IMA1); |
| 609 | SYSFS_SPRSETUP(ima2, SPRN_PA6T_IMA2); |
| 610 | SYSFS_SPRSETUP(ima3, SPRN_PA6T_IMA3); |
| 611 | SYSFS_SPRSETUP(ima4, SPRN_PA6T_IMA4); |
| 612 | SYSFS_SPRSETUP(ima5, SPRN_PA6T_IMA5); |
| 613 | SYSFS_SPRSETUP(ima6, SPRN_PA6T_IMA6); |
| 614 | SYSFS_SPRSETUP(ima7, SPRN_PA6T_IMA7); |
| 615 | SYSFS_SPRSETUP(ima8, SPRN_PA6T_IMA8); |
| 616 | SYSFS_SPRSETUP(ima9, SPRN_PA6T_IMA9); |
| 617 | SYSFS_SPRSETUP(imaat, SPRN_PA6T_IMAAT); |
| 618 | SYSFS_SPRSETUP(btcr, SPRN_PA6T_BTCR); |
| 619 | SYSFS_SPRSETUP(pccr, SPRN_PA6T_PCCR); |
| 620 | SYSFS_SPRSETUP(rpccr, SPRN_PA6T_RPCCR); |
| 621 | SYSFS_SPRSETUP(der, SPRN_PA6T_DER); |
| 622 | SYSFS_SPRSETUP(mer, SPRN_PA6T_MER); |
| 623 | SYSFS_SPRSETUP(ber, SPRN_PA6T_BER); |
| 624 | SYSFS_SPRSETUP(ier, SPRN_PA6T_IER); |
| 625 | SYSFS_SPRSETUP(sier, SPRN_PA6T_SIER); |
| 626 | SYSFS_SPRSETUP(siar, SPRN_PA6T_SIAR); |
| 627 | SYSFS_SPRSETUP(tsr0, SPRN_PA6T_TSR0); |
| 628 | SYSFS_SPRSETUP(tsr1, SPRN_PA6T_TSR1); |
| 629 | SYSFS_SPRSETUP(tsr2, SPRN_PA6T_TSR2); |
| 630 | SYSFS_SPRSETUP(tsr3, SPRN_PA6T_TSR3); |
Olof Johansson | 2e1957f | 2007-09-05 12:09:06 +1000 | [diff] [blame] | 631 | #endif /* CONFIG_DEBUG_KERNEL */ |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 632 | #endif /* HAS_PPC_PMC_PA6T */ |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 633 | |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 634 | #ifdef HAS_PPC_PMC_IBM |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 635 | static struct device_attribute ibm_common_attrs[] = { |
| 636 | __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0), |
| 637 | __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1), |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 638 | }; |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 639 | #endif /* HAS_PPC_PMC_G4 */ |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 640 | |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 641 | #ifdef HAS_PPC_PMC_G4 |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 642 | static struct device_attribute g4_common_attrs[] = { |
| 643 | __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0), |
| 644 | __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1), |
| 645 | __ATTR(mmcr2, 0600, show_mmcr2, store_mmcr2), |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 646 | }; |
| 647 | #endif /* HAS_PPC_PMC_G4 */ |
| 648 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 649 | static struct device_attribute classic_pmc_attrs[] = { |
| 650 | __ATTR(pmc1, 0600, show_pmc1, store_pmc1), |
| 651 | __ATTR(pmc2, 0600, show_pmc2, store_pmc2), |
| 652 | __ATTR(pmc3, 0600, show_pmc3, store_pmc3), |
| 653 | __ATTR(pmc4, 0600, show_pmc4, store_pmc4), |
| 654 | __ATTR(pmc5, 0600, show_pmc5, store_pmc5), |
| 655 | __ATTR(pmc6, 0600, show_pmc6, store_pmc6), |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 656 | #ifdef CONFIG_PPC64 |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 657 | __ATTR(pmc7, 0600, show_pmc7, store_pmc7), |
| 658 | __ATTR(pmc8, 0600, show_pmc8, store_pmc8), |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 659 | #endif |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 660 | }; |
| 661 | |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 662 | #ifdef HAS_PPC_PMC_PA6T |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 663 | static struct device_attribute pa6t_attrs[] = { |
| 664 | __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0), |
| 665 | __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1), |
| 666 | __ATTR(pmc0, 0600, show_pa6t_pmc0, store_pa6t_pmc0), |
| 667 | __ATTR(pmc1, 0600, show_pa6t_pmc1, store_pa6t_pmc1), |
| 668 | __ATTR(pmc2, 0600, show_pa6t_pmc2, store_pa6t_pmc2), |
| 669 | __ATTR(pmc3, 0600, show_pa6t_pmc3, store_pa6t_pmc3), |
| 670 | __ATTR(pmc4, 0600, show_pa6t_pmc4, store_pa6t_pmc4), |
| 671 | __ATTR(pmc5, 0600, show_pa6t_pmc5, store_pa6t_pmc5), |
Olof Johansson | 2e1957f | 2007-09-05 12:09:06 +1000 | [diff] [blame] | 672 | #ifdef CONFIG_DEBUG_KERNEL |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 673 | __ATTR(hid0, 0600, show_hid0, store_hid0), |
| 674 | __ATTR(hid1, 0600, show_hid1, store_hid1), |
| 675 | __ATTR(hid4, 0600, show_hid4, store_hid4), |
| 676 | __ATTR(hid5, 0600, show_hid5, store_hid5), |
| 677 | __ATTR(ima0, 0600, show_ima0, store_ima0), |
| 678 | __ATTR(ima1, 0600, show_ima1, store_ima1), |
| 679 | __ATTR(ima2, 0600, show_ima2, store_ima2), |
| 680 | __ATTR(ima3, 0600, show_ima3, store_ima3), |
| 681 | __ATTR(ima4, 0600, show_ima4, store_ima4), |
| 682 | __ATTR(ima5, 0600, show_ima5, store_ima5), |
| 683 | __ATTR(ima6, 0600, show_ima6, store_ima6), |
| 684 | __ATTR(ima7, 0600, show_ima7, store_ima7), |
| 685 | __ATTR(ima8, 0600, show_ima8, store_ima8), |
| 686 | __ATTR(ima9, 0600, show_ima9, store_ima9), |
| 687 | __ATTR(imaat, 0600, show_imaat, store_imaat), |
| 688 | __ATTR(btcr, 0600, show_btcr, store_btcr), |
| 689 | __ATTR(pccr, 0600, show_pccr, store_pccr), |
| 690 | __ATTR(rpccr, 0600, show_rpccr, store_rpccr), |
| 691 | __ATTR(der, 0600, show_der, store_der), |
| 692 | __ATTR(mer, 0600, show_mer, store_mer), |
| 693 | __ATTR(ber, 0600, show_ber, store_ber), |
| 694 | __ATTR(ier, 0600, show_ier, store_ier), |
| 695 | __ATTR(sier, 0600, show_sier, store_sier), |
| 696 | __ATTR(siar, 0600, show_siar, store_siar), |
| 697 | __ATTR(tsr0, 0600, show_tsr0, store_tsr0), |
| 698 | __ATTR(tsr1, 0600, show_tsr1, store_tsr1), |
| 699 | __ATTR(tsr2, 0600, show_tsr2, store_tsr2), |
| 700 | __ATTR(tsr3, 0600, show_tsr3, store_tsr3), |
Olof Johansson | 2e1957f | 2007-09-05 12:09:06 +1000 | [diff] [blame] | 701 | #endif /* CONFIG_DEBUG_KERNEL */ |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 702 | }; |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 703 | #endif /* HAS_PPC_PMC_PA6T */ |
| 704 | #endif /* HAS_PPC_PMC_CLASSIC */ |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 705 | |
Paul Gortmaker | 061d19f | 2013-06-24 15:30:09 -0400 | [diff] [blame] | 706 | static void register_cpu_online(unsigned int cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | { |
| 708 | struct cpu *c = &per_cpu(cpu_devices, cpu); |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 709 | struct device *s = &c->dev; |
| 710 | struct device_attribute *attrs, *pmc_attrs; |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 711 | int i, nattrs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 713 | #ifdef CONFIG_PPC64 |
Stephen Rothwell | f533927 | 2012-03-15 18:18:00 +0000 | [diff] [blame] | 714 | if (cpu_has_feature(CPU_FTR_SMT)) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 715 | device_create_file(s, &dev_attr_smt_snooze_delay); |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 716 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | |
| 718 | /* PMC stuff */ |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 719 | switch (cur_cpu_spec->pmc_type) { |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 720 | #ifdef HAS_PPC_PMC_IBM |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 721 | case PPC_PMC_IBM: |
| 722 | attrs = ibm_common_attrs; |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 723 | nattrs = sizeof(ibm_common_attrs) / sizeof(struct device_attribute); |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 724 | pmc_attrs = classic_pmc_attrs; |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 725 | break; |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 726 | #endif /* HAS_PPC_PMC_IBM */ |
| 727 | #ifdef HAS_PPC_PMC_G4 |
| 728 | case PPC_PMC_G4: |
| 729 | attrs = g4_common_attrs; |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 730 | nattrs = sizeof(g4_common_attrs) / sizeof(struct device_attribute); |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 731 | pmc_attrs = classic_pmc_attrs; |
| 732 | break; |
| 733 | #endif /* HAS_PPC_PMC_G4 */ |
| 734 | #ifdef HAS_PPC_PMC_PA6T |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 735 | case PPC_PMC_PA6T: |
| 736 | /* PA Semi starts counting at PMC0 */ |
| 737 | attrs = pa6t_attrs; |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 738 | nattrs = sizeof(pa6t_attrs) / sizeof(struct device_attribute); |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 739 | pmc_attrs = NULL; |
| 740 | break; |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 741 | #endif /* HAS_PPC_PMC_PA6T */ |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 742 | default: |
| 743 | attrs = NULL; |
| 744 | nattrs = 0; |
| 745 | pmc_attrs = NULL; |
| 746 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 748 | for (i = 0; i < nattrs; i++) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 749 | device_create_file(s, &attrs[i]); |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 750 | |
| 751 | if (pmc_attrs) |
| 752 | for (i = 0; i < cur_cpu_spec->num_pmcs; i++) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 753 | device_create_file(s, &pmc_attrs[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 755 | #ifdef CONFIG_PPC64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | if (cpu_has_feature(CPU_FTR_MMCRA)) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 757 | device_create_file(s, &dev_attr_mmcra); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | |
Madhavan Srinivasan | d1211af | 2013-10-02 00:34:10 +0530 | [diff] [blame] | 759 | if (cpu_has_feature(CPU_FTR_PURR)) { |
| 760 | if (!firmware_has_feature(FW_FEATURE_LPAR)) |
| 761 | add_write_permission_dev_attr(&dev_attr_purr); |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 762 | device_create_file(s, &dev_attr_purr); |
Madhavan Srinivasan | d1211af | 2013-10-02 00:34:10 +0530 | [diff] [blame] | 763 | } |
Anton Blanchard | 4c198557 | 2006-12-08 17:46:58 +1100 | [diff] [blame] | 764 | |
Anton Blanchard | f050982 | 2006-12-08 17:51:13 +1100 | [diff] [blame] | 765 | if (cpu_has_feature(CPU_FTR_SPURR)) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 766 | device_create_file(s, &dev_attr_spurr); |
Anton Blanchard | f050982 | 2006-12-08 17:51:13 +1100 | [diff] [blame] | 767 | |
Anton Blanchard | 4c198557 | 2006-12-08 17:46:58 +1100 | [diff] [blame] | 768 | if (cpu_has_feature(CPU_FTR_DSCR)) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 769 | device_create_file(s, &dev_attr_dscr); |
Ananth N Mavinakayanahalli | 595fe91 | 2011-11-10 19:58:53 +0000 | [diff] [blame] | 770 | |
| 771 | if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2)) |
Linus Torvalds | 7affca3 | 2012-01-07 12:03:30 -0800 | [diff] [blame] | 772 | device_create_file(s, &dev_attr_pir); |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 773 | #endif /* CONFIG_PPC64 */ |
Nathan Lynch | 124c27d | 2008-07-27 15:24:55 +1000 | [diff] [blame] | 774 | |
Wang Dongsheng | a718948 | 2013-12-17 16:17:02 +0800 | [diff] [blame] | 775 | #ifdef CONFIG_PPC_FSL_BOOK3E |
| 776 | if (PVR_VER(cur_cpu_spec->pvr_value) == PVR_VER_E6500) { |
| 777 | device_create_file(s, &dev_attr_pw20_state); |
| 778 | device_create_file(s, &dev_attr_pw20_wait_time); |
| 779 | |
| 780 | device_create_file(s, &dev_attr_altivec_idle); |
| 781 | device_create_file(s, &dev_attr_altivec_idle_wait_time); |
| 782 | } |
| 783 | #endif |
Nathan Lynch | 93197a3 | 2008-12-23 18:55:54 +0000 | [diff] [blame] | 784 | cacheinfo_cpu_online(cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | } |
| 786 | |
| 787 | #ifdef CONFIG_HOTPLUG_CPU |
| 788 | static void unregister_cpu_online(unsigned int cpu) |
| 789 | { |
| 790 | struct cpu *c = &per_cpu(cpu_devices, cpu); |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 791 | struct device *s = &c->dev; |
| 792 | struct device_attribute *attrs, *pmc_attrs; |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 793 | int i, nattrs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | |
Siddha, Suresh B | 72486f1 | 2006-12-07 02:14:10 +0100 | [diff] [blame] | 795 | BUG_ON(!c->hotpluggable); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | |
Milton Miller | a1e0eb1 | 2008-11-16 11:44:42 +0000 | [diff] [blame] | 797 | #ifdef CONFIG_PPC64 |
Stephen Rothwell | f533927 | 2012-03-15 18:18:00 +0000 | [diff] [blame] | 798 | if (cpu_has_feature(CPU_FTR_SMT)) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 799 | device_remove_file(s, &dev_attr_smt_snooze_delay); |
Milton Miller | a1e0eb1 | 2008-11-16 11:44:42 +0000 | [diff] [blame] | 800 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | |
| 802 | /* PMC stuff */ |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 803 | switch (cur_cpu_spec->pmc_type) { |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 804 | #ifdef HAS_PPC_PMC_IBM |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 805 | case PPC_PMC_IBM: |
| 806 | attrs = ibm_common_attrs; |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 807 | nattrs = sizeof(ibm_common_attrs) / sizeof(struct device_attribute); |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 808 | pmc_attrs = classic_pmc_attrs; |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 809 | break; |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 810 | #endif /* HAS_PPC_PMC_IBM */ |
| 811 | #ifdef HAS_PPC_PMC_G4 |
| 812 | case PPC_PMC_G4: |
| 813 | attrs = g4_common_attrs; |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 814 | nattrs = sizeof(g4_common_attrs) / sizeof(struct device_attribute); |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 815 | pmc_attrs = classic_pmc_attrs; |
| 816 | break; |
| 817 | #endif /* HAS_PPC_PMC_G4 */ |
| 818 | #ifdef HAS_PPC_PMC_PA6T |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 819 | case PPC_PMC_PA6T: |
| 820 | /* PA Semi starts counting at PMC0 */ |
| 821 | attrs = pa6t_attrs; |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 822 | nattrs = sizeof(pa6t_attrs) / sizeof(struct device_attribute); |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 823 | pmc_attrs = NULL; |
| 824 | break; |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 825 | #endif /* HAS_PPC_PMC_PA6T */ |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 826 | default: |
| 827 | attrs = NULL; |
| 828 | nattrs = 0; |
| 829 | pmc_attrs = NULL; |
| 830 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 832 | for (i = 0; i < nattrs; i++) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 833 | device_remove_file(s, &attrs[i]); |
Olof Johansson | 6529c13 | 2007-01-28 21:25:57 -0600 | [diff] [blame] | 834 | |
| 835 | if (pmc_attrs) |
| 836 | for (i = 0; i < cur_cpu_spec->num_pmcs; i++) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 837 | device_remove_file(s, &pmc_attrs[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 839 | #ifdef CONFIG_PPC64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | if (cpu_has_feature(CPU_FTR_MMCRA)) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 841 | device_remove_file(s, &dev_attr_mmcra); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | |
Michael Neuling | afd0542 | 2006-07-28 13:58:37 +1000 | [diff] [blame] | 843 | if (cpu_has_feature(CPU_FTR_PURR)) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 844 | device_remove_file(s, &dev_attr_purr); |
Anton Blanchard | 4c198557 | 2006-12-08 17:46:58 +1100 | [diff] [blame] | 845 | |
Anton Blanchard | f050982 | 2006-12-08 17:51:13 +1100 | [diff] [blame] | 846 | if (cpu_has_feature(CPU_FTR_SPURR)) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 847 | device_remove_file(s, &dev_attr_spurr); |
Anton Blanchard | f050982 | 2006-12-08 17:51:13 +1100 | [diff] [blame] | 848 | |
Anton Blanchard | 4c198557 | 2006-12-08 17:46:58 +1100 | [diff] [blame] | 849 | if (cpu_has_feature(CPU_FTR_DSCR)) |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 850 | device_remove_file(s, &dev_attr_dscr); |
Ananth N Mavinakayanahalli | 595fe91 | 2011-11-10 19:58:53 +0000 | [diff] [blame] | 851 | |
| 852 | if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2)) |
Linus Torvalds | 7affca3 | 2012-01-07 12:03:30 -0800 | [diff] [blame] | 853 | device_remove_file(s, &dev_attr_pir); |
Benjamin Herrenschmidt | b950bdd | 2008-08-18 14:23:51 +1000 | [diff] [blame] | 854 | #endif /* CONFIG_PPC64 */ |
Nathan Lynch | 124c27d | 2008-07-27 15:24:55 +1000 | [diff] [blame] | 855 | |
Wang Dongsheng | a718948 | 2013-12-17 16:17:02 +0800 | [diff] [blame] | 856 | #ifdef CONFIG_PPC_FSL_BOOK3E |
| 857 | if (PVR_VER(cur_cpu_spec->pvr_value) == PVR_VER_E6500) { |
| 858 | device_remove_file(s, &dev_attr_pw20_state); |
| 859 | device_remove_file(s, &dev_attr_pw20_wait_time); |
| 860 | |
| 861 | device_remove_file(s, &dev_attr_altivec_idle); |
| 862 | device_remove_file(s, &dev_attr_altivec_idle_wait_time); |
| 863 | } |
| 864 | #endif |
Nathan Lynch | 93197a3 | 2008-12-23 18:55:54 +0000 | [diff] [blame] | 865 | cacheinfo_cpu_offline(cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | } |
Nathan Fontenot | 12633e8 | 2009-11-25 17:23:25 +0000 | [diff] [blame] | 867 | |
| 868 | #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE |
| 869 | ssize_t arch_cpu_probe(const char *buf, size_t count) |
| 870 | { |
| 871 | if (ppc_md.cpu_probe) |
| 872 | return ppc_md.cpu_probe(buf, count); |
| 873 | |
| 874 | return -EINVAL; |
| 875 | } |
| 876 | |
| 877 | ssize_t arch_cpu_release(const char *buf, size_t count) |
| 878 | { |
| 879 | if (ppc_md.cpu_release) |
| 880 | return ppc_md.cpu_release(buf, count); |
| 881 | |
| 882 | return -EINVAL; |
| 883 | } |
| 884 | #endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */ |
| 885 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | #endif /* CONFIG_HOTPLUG_CPU */ |
| 887 | |
Paul Gortmaker | 061d19f | 2013-06-24 15:30:09 -0400 | [diff] [blame] | 888 | static int sysfs_cpu_notify(struct notifier_block *self, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | unsigned long action, void *hcpu) |
| 890 | { |
| 891 | unsigned int cpu = (unsigned int)(long)hcpu; |
| 892 | |
| 893 | switch (action) { |
| 894 | case CPU_ONLINE: |
Rafael J. Wysocki | 8bb7844 | 2007-05-09 02:35:10 -0700 | [diff] [blame] | 895 | case CPU_ONLINE_FROZEN: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | register_cpu_online(cpu); |
| 897 | break; |
| 898 | #ifdef CONFIG_HOTPLUG_CPU |
| 899 | case CPU_DEAD: |
Rafael J. Wysocki | 8bb7844 | 2007-05-09 02:35:10 -0700 | [diff] [blame] | 900 | case CPU_DEAD_FROZEN: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | unregister_cpu_online(cpu); |
| 902 | break; |
| 903 | #endif |
| 904 | } |
| 905 | return NOTIFY_OK; |
| 906 | } |
| 907 | |
Paul Gortmaker | 061d19f | 2013-06-24 15:30:09 -0400 | [diff] [blame] | 908 | static struct notifier_block sysfs_cpu_nb = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | .notifier_call = sysfs_cpu_notify, |
| 910 | }; |
| 911 | |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 912 | static DEFINE_MUTEX(cpu_mutex); |
| 913 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 914 | int cpu_add_dev_attr(struct device_attribute *attr) |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 915 | { |
| 916 | int cpu; |
| 917 | |
| 918 | mutex_lock(&cpu_mutex); |
| 919 | |
| 920 | for_each_possible_cpu(cpu) { |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 921 | device_create_file(get_cpu_device(cpu), attr); |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 922 | } |
| 923 | |
| 924 | mutex_unlock(&cpu_mutex); |
| 925 | return 0; |
| 926 | } |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 927 | EXPORT_SYMBOL_GPL(cpu_add_dev_attr); |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 928 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 929 | int cpu_add_dev_attr_group(struct attribute_group *attrs) |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 930 | { |
| 931 | int cpu; |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 932 | struct device *dev; |
Olof Johansson | 6bcc4c0 | 2007-09-05 12:43:17 +1000 | [diff] [blame] | 933 | int ret; |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 934 | |
| 935 | mutex_lock(&cpu_mutex); |
| 936 | |
| 937 | for_each_possible_cpu(cpu) { |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 938 | dev = get_cpu_device(cpu); |
| 939 | ret = sysfs_create_group(&dev->kobj, attrs); |
Olof Johansson | 6bcc4c0 | 2007-09-05 12:43:17 +1000 | [diff] [blame] | 940 | WARN_ON(ret != 0); |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 941 | } |
| 942 | |
| 943 | mutex_unlock(&cpu_mutex); |
| 944 | return 0; |
| 945 | } |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 946 | EXPORT_SYMBOL_GPL(cpu_add_dev_attr_group); |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 947 | |
| 948 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 949 | void cpu_remove_dev_attr(struct device_attribute *attr) |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 950 | { |
| 951 | int cpu; |
| 952 | |
| 953 | mutex_lock(&cpu_mutex); |
| 954 | |
| 955 | for_each_possible_cpu(cpu) { |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 956 | device_remove_file(get_cpu_device(cpu), attr); |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 957 | } |
| 958 | |
| 959 | mutex_unlock(&cpu_mutex); |
| 960 | } |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 961 | EXPORT_SYMBOL_GPL(cpu_remove_dev_attr); |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 962 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 963 | void cpu_remove_dev_attr_group(struct attribute_group *attrs) |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 964 | { |
| 965 | int cpu; |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 966 | struct device *dev; |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 967 | |
| 968 | mutex_lock(&cpu_mutex); |
| 969 | |
| 970 | for_each_possible_cpu(cpu) { |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 971 | dev = get_cpu_device(cpu); |
| 972 | sysfs_remove_group(&dev->kobj, attrs); |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 973 | } |
| 974 | |
| 975 | mutex_unlock(&cpu_mutex); |
| 976 | } |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 977 | EXPORT_SYMBOL_GPL(cpu_remove_dev_attr_group); |
Christian Krafft | 0344c6c | 2006-10-24 18:31:24 +0200 | [diff] [blame] | 978 | |
| 979 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | /* NUMA stuff */ |
| 981 | |
| 982 | #ifdef CONFIG_NUMA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | static void register_nodes(void) |
| 984 | { |
| 985 | int i; |
| 986 | |
Yasunori Goto | 0fc4415 | 2006-06-27 02:53:38 -0700 | [diff] [blame] | 987 | for (i = 0; i < MAX_NUMNODES; i++) |
| 988 | register_one_node(i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | } |
Jeremy Kerr | 953039c | 2006-05-01 12:16:12 -0700 | [diff] [blame] | 990 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 991 | int sysfs_add_device_to_node(struct device *dev, int nid) |
Jeremy Kerr | 953039c | 2006-05-01 12:16:12 -0700 | [diff] [blame] | 992 | { |
Wen Congyang | 8732794 | 2012-12-11 16:00:56 -0800 | [diff] [blame] | 993 | struct node *node = node_devices[nid]; |
Kay Sievers | 10fbcf4 | 2011-12-21 14:48:43 -0800 | [diff] [blame] | 994 | return sysfs_create_link(&node->dev.kobj, &dev->kobj, |
Jeremy Kerr | 953039c | 2006-05-01 12:16:12 -0700 | [diff] [blame] | 995 | kobject_name(&dev->kobj)); |
| 996 | } |
Johannes Berg | 12654f7 | 2007-07-05 19:35:33 +1000 | [diff] [blame] | 997 | EXPORT_SYMBOL_GPL(sysfs_add_device_to_node); |
Jeremy Kerr | 953039c | 2006-05-01 12:16:12 -0700 | [diff] [blame] | 998 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 999 | void sysfs_remove_device_from_node(struct device *dev, int nid) |
Jeremy Kerr | 953039c | 2006-05-01 12:16:12 -0700 | [diff] [blame] | 1000 | { |
Wen Congyang | 8732794 | 2012-12-11 16:00:56 -0800 | [diff] [blame] | 1001 | struct node *node = node_devices[nid]; |
Kay Sievers | 10fbcf4 | 2011-12-21 14:48:43 -0800 | [diff] [blame] | 1002 | sysfs_remove_link(&node->dev.kobj, kobject_name(&dev->kobj)); |
Jeremy Kerr | 953039c | 2006-05-01 12:16:12 -0700 | [diff] [blame] | 1003 | } |
Johannes Berg | 12654f7 | 2007-07-05 19:35:33 +1000 | [diff] [blame] | 1004 | EXPORT_SYMBOL_GPL(sysfs_remove_device_from_node); |
Jeremy Kerr | 953039c | 2006-05-01 12:16:12 -0700 | [diff] [blame] | 1005 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | #else |
| 1007 | static void register_nodes(void) |
| 1008 | { |
| 1009 | return; |
| 1010 | } |
Jeremy Kerr | 953039c | 2006-05-01 12:16:12 -0700 | [diff] [blame] | 1011 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | #endif |
| 1013 | |
| 1014 | /* Only valid if CPU is present. */ |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 1015 | static ssize_t show_physical_id(struct device *dev, |
| 1016 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | { |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 1018 | struct cpu *cpu = container_of(dev, struct cpu, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 1020 | return sprintf(buf, "%d\n", get_hard_smp_processor_id(cpu->dev.id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | } |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 1022 | static DEVICE_ATTR(physical_id, 0444, show_physical_id, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | |
| 1024 | static int __init topology_init(void) |
| 1025 | { |
| 1026 | int cpu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | |
| 1028 | register_nodes(); |
Srivatsa S. Bhat | d1a5511 | 2014-03-11 02:06:31 +0530 | [diff] [blame] | 1029 | |
| 1030 | cpu_notifier_register_begin(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | |
KAMEZAWA Hiroyuki | 0e55195 | 2006-03-28 14:50:51 -0800 | [diff] [blame] | 1032 | for_each_possible_cpu(cpu) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | struct cpu *c = &per_cpu(cpu_devices, cpu); |
| 1034 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | /* |
| 1036 | * For now, we just see if the system supports making |
| 1037 | * the RTAS calls for CPU hotplug. But, there may be a |
| 1038 | * more comprehensive way to do this for an individual |
| 1039 | * CPU. For instance, the boot cpu might never be valid |
| 1040 | * for hotplugging. |
| 1041 | */ |
Siddha, Suresh B | 72486f1 | 2006-12-07 02:14:10 +0100 | [diff] [blame] | 1042 | if (ppc_md.cpu_die) |
| 1043 | c->hotpluggable = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | |
Siddha, Suresh B | 72486f1 | 2006-12-07 02:14:10 +0100 | [diff] [blame] | 1045 | if (cpu_online(cpu) || c->hotpluggable) { |
KAMEZAWA Hiroyuki | 76b67ed9 | 2006-06-27 02:53:41 -0700 | [diff] [blame] | 1046 | register_cpu(c, cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | |
Kay Sievers | 8a25a2f | 2011-12-21 14:29:42 -0800 | [diff] [blame] | 1048 | device_create_file(&c->dev, &dev_attr_physical_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | } |
| 1050 | |
| 1051 | if (cpu_online(cpu)) |
| 1052 | register_cpu_online(cpu); |
| 1053 | } |
Srivatsa S. Bhat | d1a5511 | 2014-03-11 02:06:31 +0530 | [diff] [blame] | 1054 | |
| 1055 | __register_cpu_notifier(&sysfs_cpu_nb); |
| 1056 | |
| 1057 | cpu_notifier_register_done(); |
| 1058 | |
Alexey Kardashevskiy | efcac65 | 2011-03-02 15:18:48 +0000 | [diff] [blame] | 1059 | #ifdef CONFIG_PPC64 |
| 1060 | sysfs_create_dscr_default(); |
| 1061 | #endif /* CONFIG_PPC64 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | |
| 1063 | return 0; |
| 1064 | } |
Kevin Corry | e9e77ce | 2007-05-03 03:11:49 +1000 | [diff] [blame] | 1065 | subsys_initcall(topology_init); |