Lina Iyer | 514248d | 2017-02-07 15:10:53 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2014-2017, The Linux Foundation. All rights reserved. |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | */ |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/of.h> |
| 17 | #include <linux/err.h> |
| 18 | #include <linux/sysfs.h> |
| 19 | #include <linux/device.h> |
| 20 | #include <linux/platform_device.h> |
| 21 | #include <linux/moduleparam.h> |
| 22 | #include "lpm-levels.h" |
| 23 | |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 24 | enum lpm_type { |
| 25 | IDLE = 0, |
| 26 | SUSPEND, |
Mahesh Sivasubramanian | 62b3a6b | 2017-05-19 15:33:11 -0600 | [diff] [blame] | 27 | LATENCY, |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 28 | LPM_TYPE_NR |
| 29 | }; |
| 30 | |
| 31 | struct lpm_type_str { |
| 32 | enum lpm_type type; |
| 33 | char *str; |
| 34 | }; |
| 35 | |
| 36 | static const struct lpm_type_str lpm_types[] = { |
| 37 | {IDLE, "idle_enabled"}, |
| 38 | {SUSPEND, "suspend_enabled"}, |
Mahesh Sivasubramanian | 62b3a6b | 2017-05-19 15:33:11 -0600 | [diff] [blame] | 39 | {LATENCY, "latency_us"}, |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 40 | }; |
| 41 | |
| 42 | static DEFINE_PER_CPU(uint32_t *, max_residency); |
| 43 | static DEFINE_PER_CPU(uint32_t *, min_residency); |
| 44 | static struct lpm_level_avail *cpu_level_available[NR_CPUS]; |
| 45 | static struct platform_device *lpm_pdev; |
| 46 | |
| 47 | static void *get_enabled_ptr(struct kobj_attribute *attr, |
| 48 | struct lpm_level_avail *avail) |
| 49 | { |
| 50 | void *arg = NULL; |
| 51 | |
| 52 | if (!strcmp(attr->attr.name, lpm_types[IDLE].str)) |
| 53 | arg = (void *) &avail->idle_enabled; |
| 54 | else if (!strcmp(attr->attr.name, lpm_types[SUSPEND].str)) |
| 55 | arg = (void *) &avail->suspend_enabled; |
| 56 | |
| 57 | return arg; |
| 58 | } |
| 59 | |
| 60 | static struct lpm_level_avail *get_avail_ptr(struct kobject *kobj, |
| 61 | struct kobj_attribute *attr) |
| 62 | { |
| 63 | struct lpm_level_avail *avail = NULL; |
| 64 | |
| 65 | if (!strcmp(attr->attr.name, lpm_types[IDLE].str)) |
| 66 | avail = container_of(attr, struct lpm_level_avail, |
| 67 | idle_enabled_attr); |
| 68 | else if (!strcmp(attr->attr.name, lpm_types[SUSPEND].str)) |
| 69 | avail = container_of(attr, struct lpm_level_avail, |
| 70 | suspend_enabled_attr); |
Mahesh Sivasubramanian | 62b3a6b | 2017-05-19 15:33:11 -0600 | [diff] [blame] | 71 | else if (!strcmp(attr->attr.name, lpm_types[LATENCY].str)) |
| 72 | avail = container_of(attr, struct lpm_level_avail, |
| 73 | latency_attr); |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 74 | |
| 75 | return avail; |
| 76 | } |
| 77 | |
| 78 | static void set_optimum_cpu_residency(struct lpm_cpu *cpu, int cpu_id, |
| 79 | bool probe_time) |
| 80 | { |
| 81 | int i, j; |
| 82 | bool mode_avail; |
| 83 | uint32_t *maximum_residency = per_cpu(max_residency, cpu_id); |
| 84 | uint32_t *minimum_residency = per_cpu(min_residency, cpu_id); |
| 85 | |
| 86 | for (i = 0; i < cpu->nlevels; i++) { |
| 87 | struct power_params *pwr = &cpu->levels[i].pwr; |
| 88 | |
| 89 | mode_avail = probe_time || |
| 90 | lpm_cpu_mode_allow(cpu_id, i, true); |
| 91 | |
| 92 | if (!mode_avail) { |
| 93 | maximum_residency[i] = 0; |
| 94 | minimum_residency[i] = 0; |
| 95 | continue; |
| 96 | } |
| 97 | |
| 98 | maximum_residency[i] = ~0; |
| 99 | for (j = i + 1; j < cpu->nlevels; j++) { |
| 100 | mode_avail = probe_time || |
| 101 | lpm_cpu_mode_allow(cpu_id, j, true); |
| 102 | |
| 103 | if (mode_avail && |
| 104 | (maximum_residency[i] > pwr->residencies[j]) && |
| 105 | (pwr->residencies[j] != 0)) |
| 106 | maximum_residency[i] = pwr->residencies[j]; |
| 107 | } |
| 108 | |
| 109 | minimum_residency[i] = pwr->time_overhead_us; |
| 110 | for (j = i-1; j >= 0; j--) { |
| 111 | if (probe_time || lpm_cpu_mode_allow(cpu_id, j, true)) { |
| 112 | minimum_residency[i] = maximum_residency[j] + 1; |
| 113 | break; |
| 114 | } |
| 115 | } |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | static void set_optimum_cluster_residency(struct lpm_cluster *cluster, |
| 120 | bool probe_time) |
| 121 | { |
| 122 | int i, j; |
| 123 | bool mode_avail; |
| 124 | |
| 125 | for (i = 0; i < cluster->nlevels; i++) { |
| 126 | struct power_params *pwr = &cluster->levels[i].pwr; |
| 127 | |
| 128 | mode_avail = probe_time || |
| 129 | lpm_cluster_mode_allow(cluster, i, |
| 130 | true); |
| 131 | |
| 132 | if (!mode_avail) { |
| 133 | pwr->max_residency = 0; |
| 134 | pwr->min_residency = 0; |
| 135 | continue; |
| 136 | } |
| 137 | |
| 138 | pwr->max_residency = ~0; |
| 139 | for (j = i+1; j < cluster->nlevels; j++) { |
| 140 | mode_avail = probe_time || |
| 141 | lpm_cluster_mode_allow(cluster, j, |
| 142 | true); |
| 143 | if (mode_avail && |
| 144 | (pwr->max_residency > pwr->residencies[j]) && |
| 145 | (pwr->residencies[j] != 0)) |
| 146 | pwr->max_residency = pwr->residencies[j]; |
| 147 | } |
| 148 | |
| 149 | pwr->min_residency = pwr->time_overhead_us; |
| 150 | for (j = i-1; j >= 0; j--) { |
| 151 | if (probe_time || |
| 152 | lpm_cluster_mode_allow(cluster, j, true)) { |
| 153 | pwr->min_residency = |
| 154 | cluster->levels[j].pwr.max_residency + 1; |
| 155 | break; |
| 156 | } |
| 157 | } |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | uint32_t *get_per_cpu_max_residency(int cpu) |
| 162 | { |
| 163 | return per_cpu(max_residency, cpu); |
| 164 | } |
| 165 | |
| 166 | uint32_t *get_per_cpu_min_residency(int cpu) |
| 167 | { |
| 168 | return per_cpu(min_residency, cpu); |
| 169 | } |
Mahesh Sivasubramanian | 62b3a6b | 2017-05-19 15:33:11 -0600 | [diff] [blame] | 170 | |
| 171 | static ssize_t lpm_latency_show(struct kobject *kobj, |
| 172 | struct kobj_attribute *attr, char *buf) |
| 173 | { |
| 174 | int ret = 0; |
| 175 | struct kernel_param kp; |
| 176 | struct lpm_level_avail *avail = get_avail_ptr(kobj, attr); |
| 177 | |
| 178 | if (!avail) |
| 179 | pr_info("Error\n"); |
| 180 | |
| 181 | kp.arg = &avail->latency_us; |
| 182 | |
| 183 | ret = param_get_uint(buf, &kp); |
| 184 | if (ret > 0) { |
| 185 | strlcat(buf, "\n", PAGE_SIZE); |
| 186 | ret++; |
| 187 | } |
| 188 | |
| 189 | return ret; |
| 190 | } |
| 191 | |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 192 | ssize_t lpm_enable_show(struct kobject *kobj, struct kobj_attribute *attr, |
| 193 | char *buf) |
| 194 | { |
| 195 | int ret = 0; |
| 196 | struct kernel_param kp; |
| 197 | |
| 198 | kp.arg = get_enabled_ptr(attr, get_avail_ptr(kobj, attr)); |
| 199 | ret = param_get_bool(buf, &kp); |
| 200 | if (ret > 0) { |
| 201 | strlcat(buf, "\n", PAGE_SIZE); |
| 202 | ret++; |
| 203 | } |
| 204 | |
| 205 | return ret; |
| 206 | } |
| 207 | |
| 208 | ssize_t lpm_enable_store(struct kobject *kobj, struct kobj_attribute *attr, |
| 209 | const char *buf, size_t len) |
| 210 | { |
| 211 | int ret = 0; |
| 212 | struct kernel_param kp; |
| 213 | struct lpm_level_avail *avail; |
| 214 | |
| 215 | avail = get_avail_ptr(kobj, attr); |
| 216 | if (WARN_ON(!avail)) |
| 217 | return -EINVAL; |
| 218 | kp.arg = get_enabled_ptr(attr, avail); |
| 219 | ret = param_set_bool(buf, &kp); |
| 220 | |
| 221 | if (avail->cpu_node) |
| 222 | set_optimum_cpu_residency(avail->data, avail->idx, false); |
| 223 | else |
| 224 | set_optimum_cluster_residency(avail->data, false); |
| 225 | |
| 226 | return ret ? ret : len; |
| 227 | } |
| 228 | |
| 229 | static int create_lvl_avail_nodes(const char *name, |
| 230 | struct kobject *parent, struct lpm_level_avail *avail, |
| 231 | void *data, int index, bool cpu_node) |
| 232 | { |
| 233 | struct attribute_group *attr_group = NULL; |
| 234 | struct attribute **attr = NULL; |
| 235 | struct kobject *kobj = NULL; |
| 236 | int ret = 0; |
| 237 | |
| 238 | kobj = kobject_create_and_add(name, parent); |
| 239 | if (!kobj) |
| 240 | return -ENOMEM; |
| 241 | |
| 242 | attr_group = devm_kzalloc(&lpm_pdev->dev, sizeof(*attr_group), |
| 243 | GFP_KERNEL); |
| 244 | if (!attr_group) { |
| 245 | ret = -ENOMEM; |
| 246 | goto failed; |
| 247 | } |
| 248 | |
| 249 | attr = devm_kzalloc(&lpm_pdev->dev, |
| 250 | sizeof(*attr) * (LPM_TYPE_NR + 1), GFP_KERNEL); |
| 251 | if (!attr) { |
| 252 | ret = -ENOMEM; |
| 253 | goto failed; |
| 254 | } |
| 255 | |
| 256 | sysfs_attr_init(&avail->idle_enabled_attr.attr); |
| 257 | avail->idle_enabled_attr.attr.name = lpm_types[IDLE].str; |
| 258 | avail->idle_enabled_attr.attr.mode = 0644; |
| 259 | avail->idle_enabled_attr.show = lpm_enable_show; |
| 260 | avail->idle_enabled_attr.store = lpm_enable_store; |
| 261 | |
| 262 | sysfs_attr_init(&avail->suspend_enabled_attr.attr); |
| 263 | avail->suspend_enabled_attr.attr.name = lpm_types[SUSPEND].str; |
| 264 | avail->suspend_enabled_attr.attr.mode = 0644; |
| 265 | avail->suspend_enabled_attr.show = lpm_enable_show; |
| 266 | avail->suspend_enabled_attr.store = lpm_enable_store; |
| 267 | |
Mahesh Sivasubramanian | 62b3a6b | 2017-05-19 15:33:11 -0600 | [diff] [blame] | 268 | sysfs_attr_init(&avail->latency_attr.attr); |
| 269 | avail->latency_attr.attr.name = lpm_types[LATENCY].str; |
| 270 | avail->latency_attr.attr.mode = 0444; |
| 271 | avail->latency_attr.show = lpm_latency_show; |
| 272 | avail->latency_attr.store = NULL; |
| 273 | |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 274 | attr[0] = &avail->idle_enabled_attr.attr; |
| 275 | attr[1] = &avail->suspend_enabled_attr.attr; |
Mahesh Sivasubramanian | 62b3a6b | 2017-05-19 15:33:11 -0600 | [diff] [blame] | 276 | attr[2] = &avail->latency_attr.attr; |
| 277 | attr[3] = NULL; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 278 | attr_group->attrs = attr; |
| 279 | |
| 280 | ret = sysfs_create_group(kobj, attr_group); |
| 281 | if (ret) { |
| 282 | ret = -ENOMEM; |
| 283 | goto failed; |
| 284 | } |
| 285 | |
| 286 | avail->idle_enabled = true; |
| 287 | avail->suspend_enabled = true; |
| 288 | avail->kobj = kobj; |
| 289 | avail->data = data; |
| 290 | avail->idx = index; |
| 291 | avail->cpu_node = cpu_node; |
| 292 | |
| 293 | return ret; |
| 294 | |
| 295 | failed: |
| 296 | kobject_put(kobj); |
| 297 | return ret; |
| 298 | } |
| 299 | |
| 300 | static int create_cpu_lvl_nodes(struct lpm_cluster *p, struct kobject *parent) |
| 301 | { |
| 302 | int cpu; |
| 303 | int i, cpu_idx; |
| 304 | struct kobject **cpu_kobj = NULL; |
| 305 | struct lpm_level_avail *level_list = NULL; |
| 306 | char cpu_name[20] = {0}; |
| 307 | int ret = 0; |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 308 | struct list_head *pos; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 309 | |
| 310 | cpu_kobj = devm_kzalloc(&lpm_pdev->dev, sizeof(*cpu_kobj) * |
| 311 | cpumask_weight(&p->child_cpus), GFP_KERNEL); |
| 312 | if (!cpu_kobj) |
| 313 | return -ENOMEM; |
| 314 | |
| 315 | cpu_idx = 0; |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 316 | list_for_each(pos, &p->cpu) { |
| 317 | struct lpm_cpu *lpm_cpu = list_entry(pos, struct lpm_cpu, list); |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 318 | |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 319 | for_each_cpu(cpu, &lpm_cpu->related_cpus) { |
| 320 | snprintf(cpu_name, sizeof(cpu_name), "cpu%d", cpu); |
| 321 | cpu_kobj[cpu_idx] = kobject_create_and_add(cpu_name, |
| 322 | parent); |
| 323 | if (!cpu_kobj[cpu_idx]) { |
| 324 | ret = -ENOMEM; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 325 | goto release_kobj; |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 326 | } |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 327 | |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 328 | level_list = devm_kzalloc(&lpm_pdev->dev, |
| 329 | lpm_cpu->nlevels * sizeof(*level_list), |
| 330 | GFP_KERNEL); |
| 331 | if (!level_list) { |
| 332 | ret = -ENOMEM; |
| 333 | goto release_kobj; |
| 334 | } |
| 335 | |
| 336 | /* |
| 337 | * Skip enable/disable for WFI. cpuidle expects WFI to |
| 338 | * be available at all times. |
| 339 | */ |
| 340 | for (i = 1; i < lpm_cpu->nlevels; i++) { |
| 341 | level_list[i].latency_us = |
| 342 | p->levels[i].pwr.latency_us; |
| 343 | ret = create_lvl_avail_nodes( |
| 344 | lpm_cpu->levels[i].name, |
| 345 | cpu_kobj[cpu_idx], |
| 346 | &level_list[i], |
| 347 | (void *)lpm_cpu, cpu, true); |
| 348 | if (ret) |
| 349 | goto release_kobj; |
| 350 | } |
| 351 | |
| 352 | cpu_level_available[cpu] = level_list; |
| 353 | cpu_idx++; |
| 354 | } |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | return ret; |
| 358 | |
| 359 | release_kobj: |
| 360 | for (i = 0; i < cpumask_weight(&p->child_cpus); i++) |
| 361 | kobject_put(cpu_kobj[i]); |
| 362 | |
| 363 | return ret; |
| 364 | } |
| 365 | |
| 366 | int create_cluster_lvl_nodes(struct lpm_cluster *p, struct kobject *kobj) |
| 367 | { |
| 368 | int ret = 0; |
| 369 | struct lpm_cluster *child = NULL; |
| 370 | int i; |
| 371 | struct kobject *cluster_kobj = NULL; |
| 372 | |
| 373 | if (!p) |
| 374 | return -ENODEV; |
| 375 | |
| 376 | cluster_kobj = kobject_create_and_add(p->cluster_name, kobj); |
| 377 | if (!cluster_kobj) |
| 378 | return -ENOMEM; |
| 379 | |
| 380 | for (i = 0; i < p->nlevels; i++) { |
Mahesh Sivasubramanian | 62b3a6b | 2017-05-19 15:33:11 -0600 | [diff] [blame] | 381 | p->levels[i].available.latency_us = p->levels[i].pwr.latency_us; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 382 | ret = create_lvl_avail_nodes(p->levels[i].level_name, |
| 383 | cluster_kobj, &p->levels[i].available, |
| 384 | (void *)p, 0, false); |
| 385 | if (ret) |
| 386 | return ret; |
| 387 | } |
| 388 | |
| 389 | list_for_each_entry(child, &p->child, list) { |
| 390 | ret = create_cluster_lvl_nodes(child, cluster_kobj); |
| 391 | if (ret) |
| 392 | return ret; |
| 393 | } |
| 394 | |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 395 | if (!list_empty(&p->cpu)) { |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 396 | ret = create_cpu_lvl_nodes(p, cluster_kobj); |
| 397 | if (ret) |
| 398 | return ret; |
| 399 | } |
| 400 | |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | bool lpm_cpu_mode_allow(unsigned int cpu, |
| 405 | unsigned int index, bool from_idle) |
| 406 | { |
| 407 | struct lpm_level_avail *avail = cpu_level_available[cpu]; |
| 408 | |
| 409 | if (!lpm_pdev || !avail) |
| 410 | return !from_idle; |
| 411 | |
| 412 | return !!(from_idle ? avail[index].idle_enabled : |
| 413 | avail[index].suspend_enabled); |
| 414 | } |
| 415 | |
| 416 | bool lpm_cluster_mode_allow(struct lpm_cluster *cluster, |
| 417 | unsigned int mode, bool from_idle) |
| 418 | { |
| 419 | struct lpm_level_avail *avail = &cluster->levels[mode].available; |
| 420 | |
| 421 | if (!lpm_pdev || !avail) |
| 422 | return false; |
| 423 | |
| 424 | return !!(from_idle ? avail->idle_enabled : |
| 425 | avail->suspend_enabled); |
| 426 | } |
| 427 | |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 428 | static int parse_cluster_params(struct device_node *node, |
| 429 | struct lpm_cluster *c) |
| 430 | { |
| 431 | char *key; |
| 432 | int ret; |
| 433 | |
| 434 | key = "label"; |
| 435 | ret = of_property_read_string(node, key, &c->cluster_name); |
| 436 | if (ret) { |
| 437 | pr_err("%s(): Cannot read required param %s\n", __func__, key); |
| 438 | return ret; |
| 439 | } |
| 440 | |
Mahesh Sivasubramanian | 060f60c | 2017-06-02 16:55:51 -0600 | [diff] [blame] | 441 | key = "qcom,psci-mode-shift"; |
| 442 | ret = of_property_read_u32(node, key, |
| 443 | &c->psci_mode_shift); |
| 444 | if (ret) { |
| 445 | pr_err("%s(): Failed to read param: %s\n", |
| 446 | __func__, key); |
| 447 | return ret; |
| 448 | } |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 449 | |
Mahesh Sivasubramanian | 060f60c | 2017-06-02 16:55:51 -0600 | [diff] [blame] | 450 | key = "qcom,psci-mode-mask"; |
| 451 | ret = of_property_read_u32(node, key, |
| 452 | &c->psci_mode_mask); |
| 453 | if (ret) { |
| 454 | pr_err("%s(): Failed to read param: %s\n", |
| 455 | __func__, key); |
| 456 | return ret; |
| 457 | } |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 458 | |
Mahesh Sivasubramanian | 060f60c | 2017-06-02 16:55:51 -0600 | [diff] [blame] | 459 | /* Set ndevice to 1 as default */ |
| 460 | c->ndevices = 1; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 461 | |
Mahesh Sivasubramanian | b9da25f | 2016-11-04 14:35:03 -0600 | [diff] [blame] | 462 | return 0; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 463 | } |
| 464 | |
| 465 | static int parse_power_params(struct device_node *node, |
| 466 | struct power_params *pwr) |
| 467 | { |
| 468 | char *key; |
| 469 | int ret; |
| 470 | |
| 471 | key = "qcom,latency-us"; |
| 472 | ret = of_property_read_u32(node, key, &pwr->latency_us); |
| 473 | if (ret) |
| 474 | goto fail; |
| 475 | |
| 476 | key = "qcom,ss-power"; |
| 477 | ret = of_property_read_u32(node, key, &pwr->ss_power); |
| 478 | if (ret) |
| 479 | goto fail; |
| 480 | |
| 481 | key = "qcom,energy-overhead"; |
| 482 | ret = of_property_read_u32(node, key, &pwr->energy_overhead); |
| 483 | if (ret) |
| 484 | goto fail; |
| 485 | |
| 486 | key = "qcom,time-overhead"; |
| 487 | ret = of_property_read_u32(node, key, &pwr->time_overhead_us); |
| 488 | if (ret) |
| 489 | goto fail; |
| 490 | |
| 491 | fail: |
| 492 | if (ret) |
| 493 | pr_err("%s(): %s Error reading %s\n", __func__, node->name, |
| 494 | key); |
| 495 | return ret; |
| 496 | } |
| 497 | |
| 498 | static int parse_cluster_level(struct device_node *node, |
| 499 | struct lpm_cluster *cluster) |
| 500 | { |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 501 | struct lpm_cluster_level *level = &cluster->levels[cluster->nlevels]; |
| 502 | int ret = -ENOMEM; |
| 503 | char *key; |
| 504 | |
| 505 | key = "label"; |
| 506 | ret = of_property_read_string(node, key, &level->level_name); |
| 507 | if (ret) |
| 508 | goto failed; |
| 509 | |
Mahesh Sivasubramanian | 060f60c | 2017-06-02 16:55:51 -0600 | [diff] [blame] | 510 | key = "qcom,psci-mode"; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 511 | |
Mahesh Sivasubramanian | 060f60c | 2017-06-02 16:55:51 -0600 | [diff] [blame] | 512 | ret = of_property_read_u32(node, key, &level->psci_id); |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 513 | if (ret) |
| 514 | goto failed; |
| 515 | |
Mahesh Sivasubramanian | 060f60c | 2017-06-02 16:55:51 -0600 | [diff] [blame] | 516 | level->is_reset = of_property_read_bool(node, "qcom,is-reset"); |
| 517 | |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 518 | if (cluster->nlevels != cluster->default_level) { |
| 519 | key = "min child idx"; |
| 520 | ret = of_property_read_u32(node, "qcom,min-child-idx", |
| 521 | &level->min_child_level); |
| 522 | if (ret) |
| 523 | goto failed; |
| 524 | |
| 525 | if (cluster->min_child_level > level->min_child_level) |
| 526 | cluster->min_child_level = level->min_child_level; |
| 527 | } |
| 528 | |
| 529 | level->notify_rpm = of_property_read_bool(node, "qcom,notify-rpm"); |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 530 | |
| 531 | key = "parse_power_params"; |
| 532 | ret = parse_power_params(node, &level->pwr); |
| 533 | if (ret) |
| 534 | goto failed; |
| 535 | |
| 536 | key = "qcom,reset-level"; |
| 537 | ret = of_property_read_u32(node, key, &level->reset_level); |
| 538 | if (ret == -EINVAL) |
| 539 | level->reset_level = LPM_RESET_LVL_NONE; |
| 540 | else if (ret) |
| 541 | goto failed; |
| 542 | |
| 543 | cluster->nlevels++; |
| 544 | return 0; |
| 545 | failed: |
| 546 | pr_err("Failed %s() key = %s ret = %d\n", __func__, key, ret); |
| 547 | kfree(level->mode); |
| 548 | level->mode = NULL; |
| 549 | return ret; |
| 550 | } |
| 551 | |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 552 | static int parse_cpu_mode(struct device_node *n, struct lpm_cpu_level *l) |
| 553 | { |
| 554 | char *key; |
| 555 | int ret; |
| 556 | |
| 557 | key = "qcom,spm-cpu-mode"; |
| 558 | ret = of_property_read_string(n, key, &l->name); |
| 559 | if (ret) { |
| 560 | pr_err("Failed %s %d\n", n->name, __LINE__); |
| 561 | return ret; |
| 562 | } |
| 563 | |
Mahesh Sivasubramanian | 060f60c | 2017-06-02 16:55:51 -0600 | [diff] [blame] | 564 | key = "qcom,psci-cpu-mode"; |
| 565 | ret = of_property_read_u32(n, key, &l->psci_id); |
| 566 | if (ret) { |
| 567 | pr_err("Failed reading %s on device %s\n", key, |
| 568 | n->name); |
| 569 | return ret; |
| 570 | } |
| 571 | key = "qcom,hyp-psci"; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 572 | |
Mahesh Sivasubramanian | 060f60c | 2017-06-02 16:55:51 -0600 | [diff] [blame] | 573 | l->hyp_psci = of_property_read_bool(n, key); |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 574 | return 0; |
| 575 | |
| 576 | } |
| 577 | |
| 578 | static int get_cpumask_for_node(struct device_node *node, struct cpumask *mask) |
| 579 | { |
| 580 | struct device_node *cpu_node; |
| 581 | int cpu; |
| 582 | int idx = 0; |
| 583 | |
| 584 | cpu_node = of_parse_phandle(node, "qcom,cpu", idx++); |
| 585 | if (!cpu_node) { |
| 586 | pr_info("%s: No CPU phandle, assuming single cluster\n", |
| 587 | node->full_name); |
| 588 | /* |
| 589 | * Not all targets have the cpu node populated in the device |
| 590 | * tree. If cpu node is not populated assume all possible |
| 591 | * nodes belong to this cluster |
| 592 | */ |
| 593 | cpumask_copy(mask, cpu_possible_mask); |
| 594 | return 0; |
| 595 | } |
| 596 | |
| 597 | while (cpu_node) { |
| 598 | for_each_possible_cpu(cpu) { |
| 599 | if (of_get_cpu_node(cpu, NULL) == cpu_node) { |
| 600 | cpumask_set_cpu(cpu, mask); |
| 601 | break; |
| 602 | } |
| 603 | } |
| 604 | cpu_node = of_parse_phandle(node, "qcom,cpu", idx++); |
| 605 | } |
| 606 | |
| 607 | return 0; |
| 608 | } |
| 609 | |
| 610 | static int calculate_residency(struct power_params *base_pwr, |
| 611 | struct power_params *next_pwr) |
| 612 | { |
| 613 | int32_t residency = (int32_t)(next_pwr->energy_overhead - |
| 614 | base_pwr->energy_overhead) - |
| 615 | ((int32_t)(next_pwr->ss_power * next_pwr->time_overhead_us) |
| 616 | - (int32_t)(base_pwr->ss_power * base_pwr->time_overhead_us)); |
| 617 | |
| 618 | residency /= (int32_t)(base_pwr->ss_power - next_pwr->ss_power); |
| 619 | |
| 620 | if (residency < 0) { |
| 621 | pr_err("%s: residency < 0 for LPM\n", |
| 622 | __func__); |
| 623 | return next_pwr->time_overhead_us; |
| 624 | } |
| 625 | |
| 626 | return residency < next_pwr->time_overhead_us ? |
| 627 | next_pwr->time_overhead_us : residency; |
| 628 | } |
| 629 | |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 630 | static int parse_cpu(struct device_node *node, struct lpm_cpu *cpu) |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 631 | { |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 632 | |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 633 | struct device_node *n; |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 634 | int ret, i, j; |
| 635 | const char *key; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 636 | for_each_child_of_node(node, n) { |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 637 | struct lpm_cpu_level *l = &cpu->levels[cpu->nlevels]; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 638 | |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 639 | cpu->nlevels++; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 640 | |
| 641 | ret = parse_cpu_mode(n, l); |
| 642 | if (ret < 0) { |
| 643 | pr_info("Failed %s\n", l->name); |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 644 | return ret; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 645 | } |
| 646 | |
| 647 | ret = parse_power_params(n, &l->pwr); |
| 648 | if (ret) |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 649 | return ret; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 650 | |
| 651 | key = "qcom,use-broadcast-timer"; |
| 652 | l->use_bc_timer = of_property_read_bool(n, key); |
| 653 | |
| 654 | l->is_reset = of_property_read_bool(n, "qcom,is-reset"); |
| 655 | |
| 656 | key = "qcom,jtag-save-restore"; |
| 657 | l->jtag_save_restore = of_property_read_bool(n, key); |
| 658 | |
| 659 | key = "qcom,reset-level"; |
| 660 | ret = of_property_read_u32(n, key, &l->reset_level); |
| 661 | if (ret == -EINVAL) |
| 662 | l->reset_level = LPM_RESET_LVL_NONE; |
| 663 | else if (ret) |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 664 | return ret; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 665 | } |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 666 | for (i = 0; i < cpu->nlevels; i++) { |
| 667 | for (j = 0; j < cpu->nlevels; j++) { |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 668 | if (i >= j) { |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 669 | cpu->levels[i].pwr.residencies[j] = 0; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 670 | continue; |
| 671 | } |
| 672 | |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 673 | cpu->levels[i].pwr.residencies[j] = |
| 674 | calculate_residency(&cpu->levels[i].pwr, |
| 675 | &cpu->levels[j].pwr); |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 676 | |
| 677 | pr_err("%s: idx %d %u\n", __func__, j, |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 678 | cpu->levels[i].pwr.residencies[j]); |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 679 | } |
| 680 | } |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 681 | for_each_cpu(i, &cpu->related_cpus) { |
| 682 | per_cpu(max_residency, i) = devm_kzalloc(&lpm_pdev->dev, |
| 683 | sizeof(uint32_t) * cpu->nlevels, |
| 684 | GFP_KERNEL); |
| 685 | if (!per_cpu(max_residency, i)) |
| 686 | return -ENOMEM; |
| 687 | per_cpu(min_residency, i) = devm_kzalloc( |
| 688 | &lpm_pdev->dev, |
| 689 | sizeof(uint32_t) * cpu->nlevels, |
| 690 | GFP_KERNEL); |
| 691 | if (!per_cpu(min_residency, i)) |
| 692 | return -ENOMEM; |
| 693 | set_optimum_cpu_residency(cpu, i, true); |
| 694 | } |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 695 | |
| 696 | return 0; |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 697 | } |
| 698 | |
| 699 | static int parse_cpu_levels(struct device_node *node, struct lpm_cluster *c) |
| 700 | { |
| 701 | int ret = -ENOMEM, i; |
| 702 | char *key; |
| 703 | struct lpm_cpu *cpu; |
| 704 | |
| 705 | cpu = devm_kzalloc(&lpm_pdev->dev, sizeof(*cpu), GFP_KERNEL); |
| 706 | if (!cpu) |
| 707 | return ret; |
| 708 | |
| 709 | if (get_cpumask_for_node(node, &cpu->related_cpus)) |
| 710 | return -EINVAL; |
| 711 | |
| 712 | cpu->parent = c; |
| 713 | |
| 714 | key = "qcom,psci-mode-shift"; |
| 715 | ret = of_property_read_u32(node, key, &cpu->psci_mode_shift); |
| 716 | if (ret) { |
| 717 | pr_err("Failed reading %s on device %s\n", key, |
| 718 | node->name); |
| 719 | return ret; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 720 | } |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 721 | key = "qcom,psci-mode-mask"; |
| 722 | |
| 723 | ret = of_property_read_u32(node, key, &cpu->psci_mode_mask); |
| 724 | if (ret) { |
| 725 | pr_err("Failed reading %s on device %s\n", key, |
| 726 | node->name); |
| 727 | return ret; |
| 728 | } |
| 729 | |
| 730 | if (parse_cpu(node, cpu)) |
| 731 | goto failed; |
| 732 | cpumask_or(&c->child_cpus, &c->child_cpus, &cpu->related_cpus); |
| 733 | list_add(&cpu->list, &c->cpu); |
| 734 | return 0; |
| 735 | failed: |
| 736 | for (i = 0; i < cpu->nlevels; i++) { |
| 737 | kfree(cpu->levels[i].name); |
| 738 | cpu->levels[i].name = NULL; |
| 739 | } |
| 740 | kfree(cpu); |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 741 | pr_err("%s(): Failed with error code:%d\n", __func__, ret); |
| 742 | return ret; |
| 743 | } |
| 744 | |
| 745 | void free_cluster_node(struct lpm_cluster *cluster) |
| 746 | { |
| 747 | struct list_head *list; |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 748 | struct lpm_cpu *cpu, *n; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 749 | int i; |
| 750 | |
| 751 | list_for_each(list, &cluster->child) { |
| 752 | struct lpm_cluster *n; |
| 753 | |
| 754 | n = list_entry(list, typeof(*n), list); |
| 755 | list_del(list); |
| 756 | free_cluster_node(n); |
| 757 | }; |
| 758 | |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 759 | list_for_each_entry_safe(cpu, n, &cluster->cpu, list) { |
| 760 | struct lpm_cpu *cpu = list_entry(list, typeof(*cpu), list); |
| 761 | |
| 762 | for (i = 0; i < cpu->nlevels; i++) { |
| 763 | kfree(cpu->levels[i].name); |
| 764 | cpu->levels[i].name = NULL; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 765 | } |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 766 | list_del(list); |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 767 | } |
| 768 | for (i = 0; i < cluster->nlevels; i++) { |
| 769 | kfree(cluster->levels[i].mode); |
| 770 | cluster->levels[i].mode = NULL; |
| 771 | } |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 772 | kfree(cluster->name); |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 773 | cluster->name = NULL; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 774 | cluster->ndevices = 0; |
| 775 | } |
| 776 | |
| 777 | /* |
| 778 | * TODO: |
| 779 | * Expects a CPU or a cluster only. This ensures that affinity |
| 780 | * level of a cluster is consistent with reference to its |
| 781 | * child nodes. |
| 782 | */ |
| 783 | struct lpm_cluster *parse_cluster(struct device_node *node, |
| 784 | struct lpm_cluster *parent) |
| 785 | { |
| 786 | struct lpm_cluster *c; |
| 787 | struct device_node *n; |
| 788 | char *key; |
| 789 | int ret = 0; |
| 790 | int i, j; |
| 791 | |
| 792 | c = devm_kzalloc(&lpm_pdev->dev, sizeof(*c), GFP_KERNEL); |
| 793 | if (!c) |
| 794 | return ERR_PTR(-ENOMEM); |
| 795 | |
| 796 | ret = parse_cluster_params(node, c); |
| 797 | |
| 798 | if (ret) |
| 799 | goto failed_parse_params; |
| 800 | |
| 801 | INIT_LIST_HEAD(&c->child); |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 802 | INIT_LIST_HEAD(&c->cpu); |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 803 | c->parent = parent; |
| 804 | spin_lock_init(&c->sync_lock); |
| 805 | c->min_child_level = NR_LPM_LEVELS; |
| 806 | |
| 807 | for_each_child_of_node(node, n) { |
| 808 | |
| 809 | if (!n->name) |
| 810 | continue; |
| 811 | key = "qcom,pm-cluster-level"; |
| 812 | if (!of_node_cmp(n->name, key)) { |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 813 | if (parse_cluster_level(n, c)) |
| 814 | goto failed_parse_cluster; |
| 815 | continue; |
| 816 | } |
| 817 | |
| 818 | key = "qcom,pm-cluster"; |
| 819 | if (!of_node_cmp(n->name, key)) { |
| 820 | struct lpm_cluster *child; |
| 821 | |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 822 | child = parse_cluster(n, c); |
| 823 | if (!child) |
| 824 | goto failed_parse_cluster; |
| 825 | |
| 826 | list_add(&child->list, &c->child); |
| 827 | cpumask_or(&c->child_cpus, &c->child_cpus, |
| 828 | &child->child_cpus); |
| 829 | c->aff_level = child->aff_level + 1; |
| 830 | continue; |
| 831 | } |
| 832 | |
| 833 | key = "qcom,pm-cpu"; |
| 834 | if (!of_node_cmp(n->name, key)) { |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 835 | if (parse_cpu_levels(n, c)) |
| 836 | goto failed_parse_cluster; |
| 837 | |
| 838 | c->aff_level = 1; |
| 839 | |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 840 | } |
| 841 | } |
| 842 | |
| 843 | if (cpumask_intersects(&c->child_cpus, cpu_online_mask)) |
| 844 | c->last_level = c->default_level; |
| 845 | else |
| 846 | c->last_level = c->nlevels-1; |
| 847 | |
| 848 | for (i = 0; i < c->nlevels; i++) { |
| 849 | for (j = 0; j < c->nlevels; j++) { |
| 850 | if (i >= j) { |
| 851 | c->levels[i].pwr.residencies[j] = 0; |
| 852 | continue; |
| 853 | } |
| 854 | c->levels[i].pwr.residencies[j] = calculate_residency( |
| 855 | &c->levels[i].pwr, &c->levels[j].pwr); |
| 856 | } |
| 857 | } |
| 858 | set_optimum_cluster_residency(c, true); |
| 859 | return c; |
| 860 | |
| 861 | failed_parse_cluster: |
| 862 | pr_err("Failed parse cluster:%s\n", key); |
| 863 | if (parent) |
| 864 | list_del(&c->list); |
| 865 | free_cluster_node(c); |
| 866 | failed_parse_params: |
| 867 | c->parent = NULL; |
| 868 | pr_err("Failed parse params\n"); |
| 869 | kfree(c); |
| 870 | return NULL; |
| 871 | } |
| 872 | struct lpm_cluster *lpm_of_parse_cluster(struct platform_device *pdev) |
| 873 | { |
| 874 | struct device_node *top = NULL; |
| 875 | |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 876 | top = of_find_node_by_name(pdev->dev.of_node, "qcom,pm-cluster"); |
| 877 | if (!top) { |
| 878 | pr_err("Failed to find root node\n"); |
| 879 | return ERR_PTR(-ENODEV); |
| 880 | } |
| 881 | |
| 882 | lpm_pdev = pdev; |
| 883 | return parse_cluster(top, NULL); |
| 884 | } |
| 885 | |
| 886 | void cluster_dt_walkthrough(struct lpm_cluster *cluster) |
| 887 | { |
| 888 | struct list_head *list; |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 889 | struct lpm_cpu *cpu; |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 890 | int i, j; |
| 891 | static int id; |
| 892 | char str[10] = {0}; |
| 893 | |
| 894 | if (!cluster) |
| 895 | return; |
| 896 | |
| 897 | for (i = 0; i < id; i++) |
| 898 | snprintf(str+i, 10 - i, "\t"); |
| 899 | pr_info("%d\n", __LINE__); |
| 900 | |
| 901 | for (i = 0; i < cluster->nlevels; i++) { |
| 902 | struct lpm_cluster_level *l = &cluster->levels[i]; |
| 903 | |
| 904 | pr_info("%d ndevices:%d\n", __LINE__, cluster->ndevices); |
| 905 | for (j = 0; j < cluster->ndevices; j++) |
| 906 | pr_info("%sDevice: %p id:%p\n", str, |
| 907 | &cluster->name[j], &l->mode[i]); |
| 908 | } |
| 909 | |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 910 | list_for_each_entry(cpu, &cluster->cpu, list) { |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 911 | pr_info("%d\n", __LINE__); |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 912 | for (j = 0; j < cpu->nlevels; j++) |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 913 | pr_info("%s\tCPU mode: %s id:%d\n", str, |
Mahesh Sivasubramanian | 168922d | 2017-06-09 09:47:52 -0600 | [diff] [blame] | 914 | cpu->levels[j].name, |
| 915 | cpu->levels[j].mode); |
Mahesh Sivasubramanian | c2ea76f | 2016-02-01 10:40:26 -0700 | [diff] [blame] | 916 | } |
| 917 | |
| 918 | id++; |
| 919 | |
| 920 | list_for_each(list, &cluster->child) { |
| 921 | struct lpm_cluster *n; |
| 922 | |
| 923 | pr_info("%d\n", __LINE__); |
| 924 | n = list_entry(list, typeof(*n), list); |
| 925 | cluster_dt_walkthrough(n); |
| 926 | } |
| 927 | id--; |
| 928 | } |