Sunil Paidimarri | 5139aa2 | 2017-02-13 11:07:32 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2013-2017, The Linux Foundation. All rights reserved. |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [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/slab.h> |
| 14 | #include "ipa_rm_resource.h" |
| 15 | #include "ipa_rm_i.h" |
| 16 | #include "ipa_common_i.h" |
| 17 | /** |
| 18 | * ipa_rm_dep_prod_index() - producer name to producer index mapping |
| 19 | * @resource_name: [in] resource name (should be of producer) |
| 20 | * |
| 21 | * Returns: resource index mapping, IPA_RM_INDEX_INVALID |
| 22 | * in case provided resource name isn't contained |
| 23 | * in enum ipa_rm_resource_name or is not of producers. |
| 24 | * |
| 25 | */ |
| 26 | int ipa_rm_prod_index(enum ipa_rm_resource_name resource_name) |
| 27 | { |
| 28 | int result = resource_name; |
| 29 | |
| 30 | switch (resource_name) { |
| 31 | case IPA_RM_RESOURCE_Q6_PROD: |
| 32 | case IPA_RM_RESOURCE_USB_PROD: |
| 33 | case IPA_RM_RESOURCE_USB_DPL_DUMMY_PROD: |
| 34 | case IPA_RM_RESOURCE_HSIC_PROD: |
| 35 | case IPA_RM_RESOURCE_STD_ECM_PROD: |
| 36 | case IPA_RM_RESOURCE_RNDIS_PROD: |
| 37 | case IPA_RM_RESOURCE_WWAN_0_PROD: |
| 38 | case IPA_RM_RESOURCE_WLAN_PROD: |
| 39 | case IPA_RM_RESOURCE_ODU_ADAPT_PROD: |
| 40 | case IPA_RM_RESOURCE_MHI_PROD: |
Sunil Paidimarri | 5139aa2 | 2017-02-13 11:07:32 -0800 | [diff] [blame] | 41 | case IPA_RM_RESOURCE_ETHERNET_PROD: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 42 | break; |
| 43 | default: |
| 44 | result = IPA_RM_INDEX_INVALID; |
| 45 | break; |
| 46 | } |
| 47 | |
| 48 | return result; |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * ipa_rm_cons_index() - consumer name to consumer index mapping |
| 53 | * @resource_name: [in] resource name (should be of consumer) |
| 54 | * |
| 55 | * Returns: resource index mapping, IPA_RM_INDEX_INVALID |
| 56 | * in case provided resource name isn't contained |
| 57 | * in enum ipa_rm_resource_name or is not of consumers. |
| 58 | * |
| 59 | */ |
| 60 | int ipa_rm_cons_index(enum ipa_rm_resource_name resource_name) |
| 61 | { |
| 62 | int result = resource_name; |
| 63 | |
| 64 | switch (resource_name) { |
| 65 | case IPA_RM_RESOURCE_Q6_CONS: |
| 66 | case IPA_RM_RESOURCE_USB_CONS: |
| 67 | case IPA_RM_RESOURCE_HSIC_CONS: |
| 68 | case IPA_RM_RESOURCE_WLAN_CONS: |
| 69 | case IPA_RM_RESOURCE_APPS_CONS: |
| 70 | case IPA_RM_RESOURCE_ODU_ADAPT_CONS: |
| 71 | case IPA_RM_RESOURCE_MHI_CONS: |
| 72 | case IPA_RM_RESOURCE_USB_DPL_CONS: |
Sunil Paidimarri | 5139aa2 | 2017-02-13 11:07:32 -0800 | [diff] [blame] | 73 | case IPA_RM_RESOURCE_ETHERNET_CONS: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 74 | break; |
| 75 | default: |
| 76 | result = IPA_RM_INDEX_INVALID; |
| 77 | break; |
| 78 | } |
| 79 | |
| 80 | return result; |
| 81 | } |
| 82 | |
| 83 | int ipa_rm_resource_consumer_release_work( |
| 84 | struct ipa_rm_resource_cons *consumer, |
| 85 | enum ipa_rm_resource_state prev_state, |
| 86 | bool notify_completion) |
| 87 | { |
| 88 | int driver_result; |
| 89 | |
| 90 | IPA_RM_DBG_LOW("calling driver CB\n"); |
| 91 | driver_result = consumer->release_resource(); |
| 92 | IPA_RM_DBG_LOW("driver CB returned with %d\n", driver_result); |
| 93 | /* |
| 94 | * Treat IPA_RM_RELEASE_IN_PROGRESS as IPA_RM_RELEASED |
| 95 | * for CONS which remains in RELEASE_IN_PROGRESS. |
| 96 | */ |
| 97 | if (driver_result == -EINPROGRESS) |
| 98 | driver_result = 0; |
| 99 | if (driver_result != 0 && driver_result != -EINPROGRESS) { |
| 100 | IPA_RM_ERR("driver CB returned error %d\n", driver_result); |
| 101 | consumer->resource.state = prev_state; |
| 102 | goto bail; |
| 103 | } |
| 104 | if (driver_result == 0) { |
| 105 | if (notify_completion) |
| 106 | ipa_rm_resource_consumer_handle_cb(consumer, |
| 107 | IPA_RM_RESOURCE_RELEASED); |
| 108 | else |
| 109 | consumer->resource.state = IPA_RM_RELEASED; |
| 110 | } |
| 111 | complete_all(&consumer->request_consumer_in_progress); |
| 112 | |
| 113 | ipa_rm_perf_profile_change(consumer->resource.name); |
| 114 | bail: |
| 115 | return driver_result; |
| 116 | } |
| 117 | |
| 118 | int ipa_rm_resource_consumer_request_work(struct ipa_rm_resource_cons *consumer, |
| 119 | enum ipa_rm_resource_state prev_state, |
| 120 | u32 prod_needed_bw, |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 121 | bool notify_completion, |
| 122 | bool dec_client_on_err) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 123 | { |
| 124 | int driver_result; |
| 125 | |
| 126 | IPA_RM_DBG_LOW("calling driver CB\n"); |
| 127 | driver_result = consumer->request_resource(); |
| 128 | IPA_RM_DBG_LOW("driver CB returned with %d\n", driver_result); |
| 129 | if (driver_result == 0) { |
| 130 | if (notify_completion) { |
| 131 | ipa_rm_resource_consumer_handle_cb(consumer, |
| 132 | IPA_RM_RESOURCE_GRANTED); |
| 133 | } else { |
| 134 | consumer->resource.state = IPA_RM_GRANTED; |
| 135 | ipa_rm_perf_profile_change(consumer->resource.name); |
| 136 | ipa_resume_resource(consumer->resource.name); |
| 137 | } |
| 138 | } else if (driver_result != -EINPROGRESS) { |
| 139 | consumer->resource.state = prev_state; |
| 140 | consumer->resource.needed_bw -= prod_needed_bw; |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 141 | if (dec_client_on_err) |
| 142 | consumer->usage_count--; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | return driver_result; |
| 146 | } |
| 147 | |
| 148 | int ipa_rm_resource_consumer_request( |
| 149 | struct ipa_rm_resource_cons *consumer, |
| 150 | u32 prod_needed_bw, |
| 151 | bool inc_usage_count, |
| 152 | bool wake_client) |
| 153 | { |
| 154 | int result = 0; |
| 155 | enum ipa_rm_resource_state prev_state; |
| 156 | struct ipa_active_client_logging_info log_info; |
| 157 | |
| 158 | IPA_RM_DBG_LOW("%s state: %d\n", |
| 159 | ipa_rm_resource_str(consumer->resource.name), |
| 160 | consumer->resource.state); |
| 161 | |
| 162 | prev_state = consumer->resource.state; |
| 163 | consumer->resource.needed_bw += prod_needed_bw; |
| 164 | switch (consumer->resource.state) { |
| 165 | case IPA_RM_RELEASED: |
| 166 | case IPA_RM_RELEASE_IN_PROGRESS: |
| 167 | reinit_completion(&consumer->request_consumer_in_progress); |
| 168 | consumer->resource.state = IPA_RM_REQUEST_IN_PROGRESS; |
| 169 | IPA_ACTIVE_CLIENTS_PREP_RESOURCE(log_info, |
| 170 | ipa_rm_resource_str(consumer->resource.name)); |
| 171 | if (prev_state == IPA_RM_RELEASE_IN_PROGRESS || |
| 172 | ipa_inc_client_enable_clks_no_block(&log_info) != 0) { |
| 173 | IPA_RM_DBG_LOW("async resume work for %s\n", |
| 174 | ipa_rm_resource_str(consumer->resource.name)); |
| 175 | ipa_rm_wq_send_resume_cmd(consumer->resource.name, |
| 176 | prev_state, |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 177 | prod_needed_bw, |
| 178 | inc_usage_count); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 179 | result = -EINPROGRESS; |
| 180 | break; |
| 181 | } |
| 182 | result = ipa_rm_resource_consumer_request_work(consumer, |
| 183 | prev_state, |
| 184 | prod_needed_bw, |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 185 | false, |
| 186 | inc_usage_count); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 187 | break; |
| 188 | case IPA_RM_GRANTED: |
| 189 | if (wake_client) { |
| 190 | result = ipa_rm_resource_consumer_request_work( |
Gidon Studinski | 3021a6f | 2016-11-10 12:48:48 +0200 | [diff] [blame] | 191 | consumer, prev_state, prod_needed_bw, false, |
| 192 | inc_usage_count); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 193 | break; |
| 194 | } |
| 195 | ipa_rm_perf_profile_change(consumer->resource.name); |
| 196 | break; |
| 197 | case IPA_RM_REQUEST_IN_PROGRESS: |
| 198 | result = -EINPROGRESS; |
| 199 | break; |
| 200 | default: |
| 201 | consumer->resource.needed_bw -= prod_needed_bw; |
| 202 | result = -EPERM; |
| 203 | goto bail; |
| 204 | } |
| 205 | if (inc_usage_count) |
| 206 | consumer->usage_count++; |
| 207 | bail: |
| 208 | IPA_RM_DBG_LOW("%s new state: %d\n", |
| 209 | ipa_rm_resource_str(consumer->resource.name), |
| 210 | consumer->resource.state); |
| 211 | IPA_RM_DBG_LOW("EXIT with %d\n", result); |
| 212 | |
| 213 | return result; |
| 214 | } |
| 215 | |
| 216 | int ipa_rm_resource_consumer_release( |
| 217 | struct ipa_rm_resource_cons *consumer, |
| 218 | u32 prod_needed_bw, |
| 219 | bool dec_usage_count) |
| 220 | { |
| 221 | int result = 0; |
| 222 | enum ipa_rm_resource_state save_state; |
| 223 | |
| 224 | IPA_RM_DBG_LOW("%s state: %d\n", |
| 225 | ipa_rm_resource_str(consumer->resource.name), |
| 226 | consumer->resource.state); |
| 227 | save_state = consumer->resource.state; |
| 228 | consumer->resource.needed_bw -= prod_needed_bw; |
| 229 | switch (consumer->resource.state) { |
| 230 | case IPA_RM_RELEASED: |
| 231 | break; |
| 232 | case IPA_RM_GRANTED: |
| 233 | case IPA_RM_REQUEST_IN_PROGRESS: |
| 234 | if (dec_usage_count && consumer->usage_count > 0) |
| 235 | consumer->usage_count--; |
| 236 | if (consumer->usage_count == 0) { |
| 237 | consumer->resource.state = IPA_RM_RELEASE_IN_PROGRESS; |
| 238 | if (save_state == IPA_RM_REQUEST_IN_PROGRESS || |
| 239 | ipa_suspend_resource_no_block( |
| 240 | consumer->resource.name) != 0) { |
| 241 | ipa_rm_wq_send_suspend_cmd( |
| 242 | consumer->resource.name, |
| 243 | save_state, |
| 244 | prod_needed_bw); |
| 245 | result = -EINPROGRESS; |
| 246 | goto bail; |
| 247 | } |
| 248 | result = ipa_rm_resource_consumer_release_work(consumer, |
| 249 | save_state, false); |
| 250 | goto bail; |
| 251 | } else if (consumer->resource.state == IPA_RM_GRANTED) { |
| 252 | ipa_rm_perf_profile_change(consumer->resource.name); |
| 253 | } |
| 254 | break; |
| 255 | case IPA_RM_RELEASE_IN_PROGRESS: |
| 256 | if (dec_usage_count && consumer->usage_count > 0) |
| 257 | consumer->usage_count--; |
| 258 | result = -EINPROGRESS; |
| 259 | break; |
| 260 | default: |
| 261 | result = -EPERM; |
| 262 | goto bail; |
| 263 | } |
| 264 | bail: |
| 265 | IPA_RM_DBG_LOW("%s new state: %d\n", |
| 266 | ipa_rm_resource_str(consumer->resource.name), |
| 267 | consumer->resource.state); |
| 268 | IPA_RM_DBG_LOW("EXIT with %d\n", result); |
| 269 | |
| 270 | return result; |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * ipa_rm_resource_producer_notify_clients() - notify |
| 275 | * all registered clients of given producer |
| 276 | * @producer: producer |
| 277 | * @event: event to notify |
| 278 | * @notify_registered_only: notify only clients registered by |
| 279 | * ipa_rm_register() |
| 280 | */ |
| 281 | void ipa_rm_resource_producer_notify_clients( |
| 282 | struct ipa_rm_resource_prod *producer, |
| 283 | enum ipa_rm_event event, |
| 284 | bool notify_registered_only) |
| 285 | { |
| 286 | struct ipa_rm_notification_info *reg_info; |
| 287 | |
| 288 | IPA_RM_DBG_LOW("%s event: %d notify_registered_only: %d\n", |
| 289 | ipa_rm_resource_str(producer->resource.name), |
| 290 | event, |
| 291 | notify_registered_only); |
| 292 | |
| 293 | list_for_each_entry(reg_info, &(producer->event_listeners), link) { |
| 294 | if (notify_registered_only && !reg_info->explicit) |
| 295 | continue; |
| 296 | |
| 297 | IPA_RM_DBG_LOW("Notifying %s event: %d\n", |
| 298 | ipa_rm_resource_str(producer->resource.name), event); |
| 299 | reg_info->reg_params.notify_cb(reg_info->reg_params.user_data, |
| 300 | event, |
| 301 | 0); |
| 302 | IPA_RM_DBG_LOW("back from client CB\n"); |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | static int ipa_rm_resource_producer_create(struct ipa_rm_resource **resource, |
| 307 | struct ipa_rm_resource_prod **producer, |
| 308 | struct ipa_rm_create_params *create_params, |
| 309 | int *max_peers) |
| 310 | { |
| 311 | int result = 0; |
| 312 | |
| 313 | *producer = kzalloc(sizeof(**producer), GFP_ATOMIC); |
| 314 | if (*producer == NULL) { |
| 315 | IPA_RM_ERR("no mem\n"); |
| 316 | result = -ENOMEM; |
| 317 | goto bail; |
| 318 | } |
| 319 | |
| 320 | INIT_LIST_HEAD(&((*producer)->event_listeners)); |
| 321 | result = ipa_rm_resource_producer_register(*producer, |
| 322 | &(create_params->reg_params), |
| 323 | false); |
| 324 | if (result) { |
| 325 | IPA_RM_ERR("ipa_rm_resource_producer_register() failed\n"); |
| 326 | goto register_fail; |
| 327 | } |
| 328 | |
| 329 | (*resource) = (struct ipa_rm_resource *) (*producer); |
| 330 | (*resource)->type = IPA_RM_PRODUCER; |
Skylar Chang | a951658 | 2017-05-09 11:36:47 -0700 | [diff] [blame] | 331 | *max_peers = IPA_RM_RESOURCE_MAX; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 332 | goto bail; |
| 333 | register_fail: |
| 334 | kfree(*producer); |
| 335 | bail: |
| 336 | return result; |
| 337 | } |
| 338 | |
| 339 | static void ipa_rm_resource_producer_delete( |
| 340 | struct ipa_rm_resource_prod *producer) |
| 341 | { |
| 342 | struct ipa_rm_notification_info *reg_info; |
| 343 | struct list_head *pos, *q; |
| 344 | |
| 345 | ipa_rm_resource_producer_release(producer); |
| 346 | list_for_each_safe(pos, q, &(producer->event_listeners)) { |
| 347 | reg_info = list_entry(pos, |
| 348 | struct ipa_rm_notification_info, |
| 349 | link); |
| 350 | list_del(pos); |
| 351 | kfree(reg_info); |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | static int ipa_rm_resource_consumer_create(struct ipa_rm_resource **resource, |
| 356 | struct ipa_rm_resource_cons **consumer, |
| 357 | struct ipa_rm_create_params *create_params, |
| 358 | int *max_peers) |
| 359 | { |
| 360 | int result = 0; |
| 361 | |
| 362 | *consumer = kzalloc(sizeof(**consumer), GFP_ATOMIC); |
| 363 | if (*consumer == NULL) { |
| 364 | IPA_RM_ERR("no mem\n"); |
| 365 | result = -ENOMEM; |
| 366 | goto bail; |
| 367 | } |
| 368 | |
| 369 | (*consumer)->request_resource = create_params->request_resource; |
| 370 | (*consumer)->release_resource = create_params->release_resource; |
| 371 | (*resource) = (struct ipa_rm_resource *) (*consumer); |
| 372 | (*resource)->type = IPA_RM_CONSUMER; |
| 373 | init_completion(&((*consumer)->request_consumer_in_progress)); |
Skylar Chang | a951658 | 2017-05-09 11:36:47 -0700 | [diff] [blame] | 374 | *max_peers = IPA_RM_RESOURCE_MAX; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 375 | bail: |
| 376 | return result; |
| 377 | } |
| 378 | |
| 379 | /** |
| 380 | * ipa_rm_resource_create() - creates resource |
| 381 | * @create_params: [in] parameters needed |
| 382 | * for resource initialization with IPA RM |
| 383 | * @resource: [out] created resource |
| 384 | * |
| 385 | * Returns: 0 on success, negative on failure |
| 386 | */ |
| 387 | int ipa_rm_resource_create( |
| 388 | struct ipa_rm_create_params *create_params, |
| 389 | struct ipa_rm_resource **resource) |
| 390 | { |
| 391 | struct ipa_rm_resource_cons *consumer; |
| 392 | struct ipa_rm_resource_prod *producer; |
| 393 | int max_peers; |
| 394 | int result = 0; |
| 395 | |
| 396 | if (!create_params) { |
| 397 | result = -EINVAL; |
| 398 | goto bail; |
| 399 | } |
| 400 | |
| 401 | if (IPA_RM_RESORCE_IS_PROD(create_params->name)) { |
| 402 | result = ipa_rm_resource_producer_create(resource, |
| 403 | &producer, |
| 404 | create_params, |
| 405 | &max_peers); |
| 406 | if (result) { |
| 407 | IPA_RM_ERR("ipa_rm_resource_producer_create failed\n"); |
| 408 | goto bail; |
| 409 | } |
| 410 | } else if (IPA_RM_RESORCE_IS_CONS(create_params->name)) { |
| 411 | result = ipa_rm_resource_consumer_create(resource, |
| 412 | &consumer, |
| 413 | create_params, |
| 414 | &max_peers); |
| 415 | if (result) { |
| 416 | IPA_RM_ERR("ipa_rm_resource_producer_create failed\n"); |
| 417 | goto bail; |
| 418 | } |
| 419 | } else { |
| 420 | IPA_RM_ERR("invalied resource\n"); |
| 421 | result = -EPERM; |
| 422 | goto bail; |
| 423 | } |
| 424 | |
| 425 | result = ipa_rm_peers_list_create(max_peers, |
| 426 | &((*resource)->peers_list)); |
| 427 | if (result) { |
| 428 | IPA_RM_ERR("ipa_rm_peers_list_create failed\n"); |
| 429 | goto peers_alloc_fail; |
| 430 | } |
| 431 | (*resource)->name = create_params->name; |
| 432 | (*resource)->floor_voltage = create_params->floor_voltage; |
| 433 | (*resource)->state = IPA_RM_RELEASED; |
| 434 | goto bail; |
| 435 | |
| 436 | peers_alloc_fail: |
| 437 | ipa_rm_resource_delete(*resource); |
| 438 | bail: |
| 439 | return result; |
| 440 | } |
| 441 | |
| 442 | /** |
| 443 | * ipa_rm_resource_delete() - deletes resource |
| 444 | * @resource: [in] resource |
| 445 | * for resource initialization with IPA RM |
| 446 | * |
| 447 | * Returns: 0 on success, negative on failure |
| 448 | */ |
| 449 | int ipa_rm_resource_delete(struct ipa_rm_resource *resource) |
| 450 | { |
| 451 | struct ipa_rm_resource *consumer; |
| 452 | struct ipa_rm_resource *producer; |
| 453 | int peers_index; |
| 454 | int result = 0; |
| 455 | int list_size; |
| 456 | bool userspace_dep; |
| 457 | |
| 458 | if (!resource) { |
| 459 | IPA_RM_ERR("invalid params\n"); |
| 460 | return -EINVAL; |
| 461 | } |
| 462 | |
| 463 | IPA_RM_DBG("ipa_rm_resource_delete ENTER with resource %d\n", |
| 464 | resource->name); |
| 465 | if (resource->type == IPA_RM_PRODUCER) { |
| 466 | if (resource->peers_list) { |
| 467 | list_size = ipa_rm_peers_list_get_size( |
| 468 | resource->peers_list); |
| 469 | for (peers_index = 0; |
| 470 | peers_index < list_size; |
| 471 | peers_index++) { |
| 472 | consumer = ipa_rm_peers_list_get_resource( |
| 473 | peers_index, |
| 474 | resource->peers_list); |
| 475 | if (consumer) { |
| 476 | userspace_dep = |
| 477 | ipa_rm_peers_list_get_userspace_dep( |
| 478 | peers_index, |
| 479 | resource->peers_list); |
| 480 | ipa_rm_resource_delete_dependency( |
| 481 | resource, |
| 482 | consumer, |
| 483 | userspace_dep); |
| 484 | } |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | ipa_rm_resource_producer_delete( |
| 489 | (struct ipa_rm_resource_prod *) resource); |
| 490 | } else if (resource->type == IPA_RM_CONSUMER) { |
| 491 | if (resource->peers_list) { |
| 492 | list_size = ipa_rm_peers_list_get_size( |
| 493 | resource->peers_list); |
| 494 | for (peers_index = 0; |
| 495 | peers_index < list_size; |
| 496 | peers_index++){ |
| 497 | producer = ipa_rm_peers_list_get_resource( |
| 498 | peers_index, |
| 499 | resource->peers_list); |
| 500 | if (producer) { |
| 501 | userspace_dep = |
| 502 | ipa_rm_peers_list_get_userspace_dep( |
| 503 | peers_index, |
| 504 | resource->peers_list); |
| 505 | ipa_rm_resource_delete_dependency( |
| 506 | producer, |
| 507 | resource, |
| 508 | userspace_dep); |
| 509 | } |
| 510 | } |
| 511 | } |
| 512 | } |
| 513 | ipa_rm_peers_list_delete(resource->peers_list); |
| 514 | kfree(resource); |
| 515 | return result; |
| 516 | } |
| 517 | |
| 518 | /** |
| 519 | * ipa_rm_resource_register() - register resource |
| 520 | * @resource: [in] resource |
| 521 | * @reg_params: [in] registration parameters |
| 522 | * @explicit: [in] registered explicitly by ipa_rm_register() |
| 523 | * |
| 524 | * Returns: 0 on success, negative on failure |
| 525 | * |
| 526 | * Producer resource is expected for this call. |
| 527 | * |
| 528 | */ |
| 529 | int ipa_rm_resource_producer_register(struct ipa_rm_resource_prod *producer, |
| 530 | struct ipa_rm_register_params *reg_params, |
| 531 | bool explicit) |
| 532 | { |
| 533 | int result = 0; |
| 534 | struct ipa_rm_notification_info *reg_info; |
| 535 | struct list_head *pos; |
| 536 | |
| 537 | if (!producer || !reg_params) { |
| 538 | IPA_RM_ERR("invalid params\n"); |
| 539 | result = -EPERM; |
| 540 | goto bail; |
| 541 | } |
| 542 | |
| 543 | list_for_each(pos, &(producer->event_listeners)) { |
| 544 | reg_info = list_entry(pos, |
| 545 | struct ipa_rm_notification_info, |
| 546 | link); |
| 547 | if (reg_info->reg_params.notify_cb == |
| 548 | reg_params->notify_cb) { |
| 549 | IPA_RM_ERR("already registered\n"); |
| 550 | result = -EPERM; |
| 551 | goto bail; |
| 552 | } |
| 553 | |
| 554 | } |
| 555 | |
| 556 | reg_info = kzalloc(sizeof(*reg_info), GFP_ATOMIC); |
| 557 | if (reg_info == NULL) { |
| 558 | IPA_RM_ERR("no mem\n"); |
| 559 | result = -ENOMEM; |
| 560 | goto bail; |
| 561 | } |
| 562 | |
| 563 | reg_info->reg_params.user_data = reg_params->user_data; |
| 564 | reg_info->reg_params.notify_cb = reg_params->notify_cb; |
| 565 | reg_info->explicit = explicit; |
| 566 | INIT_LIST_HEAD(®_info->link); |
| 567 | list_add(®_info->link, &producer->event_listeners); |
| 568 | bail: |
| 569 | return result; |
| 570 | } |
| 571 | |
| 572 | /** |
| 573 | * ipa_rm_resource_deregister() - register resource |
| 574 | * @resource: [in] resource |
| 575 | * @reg_params: [in] registration parameters |
| 576 | * |
| 577 | * Returns: 0 on success, negative on failure |
| 578 | * |
| 579 | * Producer resource is expected for this call. |
| 580 | * This function deleted only single instance of |
| 581 | * registration info. |
| 582 | * |
| 583 | */ |
| 584 | int ipa_rm_resource_producer_deregister(struct ipa_rm_resource_prod *producer, |
| 585 | struct ipa_rm_register_params *reg_params) |
| 586 | { |
| 587 | int result = -EINVAL; |
| 588 | struct ipa_rm_notification_info *reg_info; |
| 589 | struct list_head *pos, *q; |
| 590 | |
| 591 | if (!producer || !reg_params) { |
| 592 | IPA_RM_ERR("invalid params\n"); |
| 593 | return -EINVAL; |
| 594 | } |
| 595 | |
| 596 | list_for_each_safe(pos, q, &(producer->event_listeners)) { |
| 597 | reg_info = list_entry(pos, |
| 598 | struct ipa_rm_notification_info, |
| 599 | link); |
| 600 | if (reg_info->reg_params.notify_cb == |
| 601 | reg_params->notify_cb) { |
| 602 | list_del(pos); |
| 603 | kfree(reg_info); |
| 604 | result = 0; |
| 605 | goto bail; |
| 606 | } |
| 607 | } |
| 608 | bail: |
| 609 | return result; |
| 610 | } |
| 611 | |
| 612 | /** |
| 613 | * ipa_rm_resource_add_dependency() - add dependency between two |
| 614 | * given resources |
| 615 | * @resource: [in] resource resource |
| 616 | * @depends_on: [in] depends_on resource |
| 617 | * |
| 618 | * Returns: 0 on success, negative on failure |
| 619 | */ |
| 620 | int ipa_rm_resource_add_dependency(struct ipa_rm_resource *resource, |
| 621 | struct ipa_rm_resource *depends_on, |
| 622 | bool userspace_dep) |
| 623 | { |
| 624 | int result = 0; |
| 625 | int consumer_result; |
| 626 | bool add_dep_by_userspace; |
| 627 | |
| 628 | if (!resource || !depends_on) { |
| 629 | IPA_RM_ERR("invalid params\n"); |
| 630 | return -EINVAL; |
| 631 | } |
| 632 | |
| 633 | if (ipa_rm_peers_list_check_dependency(resource->peers_list, |
| 634 | resource->name, |
| 635 | depends_on->peers_list, |
| 636 | depends_on->name, |
| 637 | &add_dep_by_userspace)) { |
| 638 | IPA_RM_ERR("dependency already exists, added by %s\n", |
| 639 | add_dep_by_userspace ? "userspace" : "kernel"); |
| 640 | return -EEXIST; |
| 641 | } |
| 642 | |
| 643 | ipa_rm_peers_list_add_peer(resource->peers_list, depends_on, |
| 644 | userspace_dep); |
| 645 | ipa_rm_peers_list_add_peer(depends_on->peers_list, resource, |
| 646 | userspace_dep); |
| 647 | IPA_RM_DBG("%s state: %d\n", ipa_rm_resource_str(resource->name), |
| 648 | resource->state); |
| 649 | |
| 650 | resource->needed_bw += depends_on->max_bw; |
| 651 | switch (resource->state) { |
| 652 | case IPA_RM_RELEASED: |
| 653 | case IPA_RM_RELEASE_IN_PROGRESS: |
| 654 | break; |
| 655 | case IPA_RM_GRANTED: |
| 656 | case IPA_RM_REQUEST_IN_PROGRESS: |
| 657 | { |
| 658 | enum ipa_rm_resource_state prev_state = resource->state; |
| 659 | |
| 660 | resource->state = IPA_RM_REQUEST_IN_PROGRESS; |
| 661 | ((struct ipa_rm_resource_prod *) |
| 662 | resource)->pending_request++; |
| 663 | consumer_result = ipa_rm_resource_consumer_request( |
| 664 | (struct ipa_rm_resource_cons *)depends_on, |
| 665 | resource->max_bw, |
| 666 | true, false); |
| 667 | if (consumer_result != -EINPROGRESS) { |
| 668 | resource->state = prev_state; |
| 669 | ((struct ipa_rm_resource_prod *) |
| 670 | resource)->pending_request--; |
| 671 | ipa_rm_perf_profile_change(resource->name); |
| 672 | } |
| 673 | result = consumer_result; |
| 674 | break; |
| 675 | } |
| 676 | default: |
| 677 | IPA_RM_ERR("invalid state\n"); |
| 678 | result = -EPERM; |
| 679 | goto bail; |
| 680 | } |
| 681 | bail: |
| 682 | IPA_RM_DBG("%s new state: %d\n", ipa_rm_resource_str(resource->name), |
| 683 | resource->state); |
| 684 | IPA_RM_DBG("EXIT with %d\n", result); |
| 685 | |
| 686 | return result; |
| 687 | } |
| 688 | |
| 689 | /** |
| 690 | * ipa_rm_resource_delete_dependency() - add dependency between two |
| 691 | * given resources |
| 692 | * @resource: [in] resource resource |
| 693 | * @depends_on: [in] depends_on resource |
| 694 | * |
| 695 | * Returns: 0 on success, negative on failure |
| 696 | * In case the resource state was changed, a notification |
| 697 | * will be sent to the RM client |
| 698 | */ |
| 699 | int ipa_rm_resource_delete_dependency(struct ipa_rm_resource *resource, |
| 700 | struct ipa_rm_resource *depends_on, |
| 701 | bool userspace_dep) |
| 702 | { |
| 703 | int result = 0; |
| 704 | bool state_changed = false; |
| 705 | bool release_consumer = false; |
| 706 | enum ipa_rm_event evt; |
| 707 | bool add_dep_by_userspace; |
| 708 | |
| 709 | if (!resource || !depends_on) { |
| 710 | IPA_RM_ERR("invalid params\n"); |
| 711 | return -EINVAL; |
| 712 | } |
| 713 | |
| 714 | if (!ipa_rm_peers_list_check_dependency(resource->peers_list, |
| 715 | resource->name, |
| 716 | depends_on->peers_list, |
| 717 | depends_on->name, |
| 718 | &add_dep_by_userspace)) { |
| 719 | IPA_RM_ERR("dependency does not exist\n"); |
| 720 | return -EINVAL; |
| 721 | } |
| 722 | |
| 723 | /* |
| 724 | * to avoid race conditions between kernel and userspace |
| 725 | * need to check that the dependency was added by same entity |
| 726 | */ |
| 727 | if (add_dep_by_userspace != userspace_dep) { |
| 728 | IPA_RM_DBG("dependency was added by %s\n", |
| 729 | add_dep_by_userspace ? "userspace" : "kernel"); |
| 730 | IPA_RM_DBG("ignore request to delete dependency by %s\n", |
| 731 | userspace_dep ? "userspace" : "kernel"); |
| 732 | return 0; |
| 733 | } |
| 734 | |
| 735 | IPA_RM_DBG("%s state: %d\n", ipa_rm_resource_str(resource->name), |
| 736 | resource->state); |
| 737 | |
| 738 | resource->needed_bw -= depends_on->max_bw; |
| 739 | switch (resource->state) { |
| 740 | case IPA_RM_RELEASED: |
| 741 | break; |
| 742 | case IPA_RM_GRANTED: |
| 743 | ipa_rm_perf_profile_change(resource->name); |
| 744 | release_consumer = true; |
| 745 | break; |
| 746 | case IPA_RM_RELEASE_IN_PROGRESS: |
| 747 | if (((struct ipa_rm_resource_prod *) |
| 748 | resource)->pending_release > 0) |
| 749 | ((struct ipa_rm_resource_prod *) |
| 750 | resource)->pending_release--; |
| 751 | if (depends_on->state == IPA_RM_RELEASE_IN_PROGRESS && |
| 752 | ((struct ipa_rm_resource_prod *) |
| 753 | resource)->pending_release == 0) { |
| 754 | resource->state = IPA_RM_RELEASED; |
| 755 | state_changed = true; |
| 756 | evt = IPA_RM_RESOURCE_RELEASED; |
| 757 | ipa_rm_perf_profile_change(resource->name); |
| 758 | } |
| 759 | break; |
| 760 | case IPA_RM_REQUEST_IN_PROGRESS: |
| 761 | release_consumer = true; |
| 762 | if (((struct ipa_rm_resource_prod *) |
| 763 | resource)->pending_request > 0) |
| 764 | ((struct ipa_rm_resource_prod *) |
| 765 | resource)->pending_request--; |
| 766 | if (depends_on->state == IPA_RM_REQUEST_IN_PROGRESS && |
| 767 | ((struct ipa_rm_resource_prod *) |
| 768 | resource)->pending_request == 0) { |
| 769 | resource->state = IPA_RM_GRANTED; |
| 770 | state_changed = true; |
| 771 | evt = IPA_RM_RESOURCE_GRANTED; |
| 772 | ipa_rm_perf_profile_change(resource->name); |
| 773 | } |
| 774 | break; |
| 775 | default: |
| 776 | result = -EINVAL; |
| 777 | goto bail; |
| 778 | } |
| 779 | if (state_changed) { |
| 780 | (void) ipa_rm_wq_send_cmd(IPA_RM_WQ_NOTIFY_PROD, |
| 781 | resource->name, |
| 782 | evt, |
| 783 | false); |
| 784 | } |
| 785 | IPA_RM_DBG("%s new state: %d\n", ipa_rm_resource_str(resource->name), |
| 786 | resource->state); |
| 787 | ipa_rm_peers_list_remove_peer(resource->peers_list, |
| 788 | depends_on->name); |
| 789 | ipa_rm_peers_list_remove_peer(depends_on->peers_list, |
| 790 | resource->name); |
| 791 | if (release_consumer) |
| 792 | (void) ipa_rm_resource_consumer_release( |
| 793 | (struct ipa_rm_resource_cons *)depends_on, |
| 794 | resource->max_bw, |
| 795 | true); |
| 796 | bail: |
| 797 | IPA_RM_DBG("EXIT with %d\n", result); |
| 798 | |
| 799 | return result; |
| 800 | } |
| 801 | |
| 802 | /** |
| 803 | * ipa_rm_resource_producer_request() - producer resource request |
| 804 | * @producer: [in] producer |
| 805 | * |
| 806 | * Returns: 0 on success, negative on failure |
| 807 | */ |
| 808 | int ipa_rm_resource_producer_request(struct ipa_rm_resource_prod *producer) |
| 809 | { |
| 810 | int peers_index; |
| 811 | int result = 0; |
| 812 | struct ipa_rm_resource *consumer; |
| 813 | int consumer_result; |
| 814 | enum ipa_rm_resource_state state; |
| 815 | |
| 816 | state = producer->resource.state; |
| 817 | switch (producer->resource.state) { |
| 818 | case IPA_RM_RELEASED: |
| 819 | case IPA_RM_RELEASE_IN_PROGRESS: |
| 820 | producer->resource.state = IPA_RM_REQUEST_IN_PROGRESS; |
| 821 | break; |
| 822 | case IPA_RM_GRANTED: |
| 823 | goto unlock_and_bail; |
| 824 | case IPA_RM_REQUEST_IN_PROGRESS: |
| 825 | result = -EINPROGRESS; |
| 826 | goto unlock_and_bail; |
| 827 | default: |
| 828 | result = -EINVAL; |
| 829 | goto unlock_and_bail; |
| 830 | } |
| 831 | |
| 832 | producer->pending_request = 0; |
| 833 | for (peers_index = 0; |
| 834 | peers_index < ipa_rm_peers_list_get_size( |
| 835 | producer->resource.peers_list); |
| 836 | peers_index++) { |
| 837 | consumer = ipa_rm_peers_list_get_resource(peers_index, |
| 838 | producer->resource.peers_list); |
| 839 | if (consumer) { |
| 840 | producer->pending_request++; |
| 841 | consumer_result = ipa_rm_resource_consumer_request( |
| 842 | (struct ipa_rm_resource_cons *)consumer, |
| 843 | producer->resource.max_bw, |
| 844 | true, false); |
| 845 | if (consumer_result == -EINPROGRESS) { |
| 846 | result = -EINPROGRESS; |
| 847 | } else { |
| 848 | producer->pending_request--; |
| 849 | if (consumer_result != 0) { |
| 850 | result = consumer_result; |
| 851 | goto bail; |
| 852 | } |
| 853 | } |
| 854 | } |
| 855 | } |
| 856 | |
| 857 | if (producer->pending_request == 0) { |
| 858 | producer->resource.state = IPA_RM_GRANTED; |
| 859 | ipa_rm_perf_profile_change(producer->resource.name); |
| 860 | (void) ipa_rm_wq_send_cmd(IPA_RM_WQ_NOTIFY_PROD, |
| 861 | producer->resource.name, |
| 862 | IPA_RM_RESOURCE_GRANTED, |
| 863 | true); |
| 864 | result = 0; |
| 865 | } |
| 866 | unlock_and_bail: |
| 867 | if (state != producer->resource.state) |
| 868 | IPA_RM_DBG_LOW("%s state changed %d->%d\n", |
| 869 | ipa_rm_resource_str(producer->resource.name), |
| 870 | state, |
| 871 | producer->resource.state); |
| 872 | bail: |
| 873 | return result; |
| 874 | } |
| 875 | |
| 876 | /** |
| 877 | * ipa_rm_resource_producer_release() - producer resource release |
| 878 | * producer: [in] producer resource |
| 879 | * |
| 880 | * Returns: 0 on success, negative on failure |
| 881 | * |
| 882 | */ |
| 883 | int ipa_rm_resource_producer_release(struct ipa_rm_resource_prod *producer) |
| 884 | { |
| 885 | int peers_index; |
| 886 | int result = 0; |
| 887 | struct ipa_rm_resource *consumer; |
| 888 | int consumer_result; |
| 889 | enum ipa_rm_resource_state state; |
| 890 | |
| 891 | state = producer->resource.state; |
| 892 | switch (producer->resource.state) { |
| 893 | case IPA_RM_RELEASED: |
| 894 | goto bail; |
| 895 | case IPA_RM_GRANTED: |
| 896 | case IPA_RM_REQUEST_IN_PROGRESS: |
| 897 | producer->resource.state = IPA_RM_RELEASE_IN_PROGRESS; |
| 898 | break; |
| 899 | case IPA_RM_RELEASE_IN_PROGRESS: |
| 900 | result = -EINPROGRESS; |
| 901 | goto bail; |
| 902 | default: |
| 903 | result = -EPERM; |
| 904 | goto bail; |
| 905 | } |
| 906 | |
| 907 | producer->pending_release = 0; |
| 908 | for (peers_index = 0; |
| 909 | peers_index < ipa_rm_peers_list_get_size( |
| 910 | producer->resource.peers_list); |
| 911 | peers_index++) { |
| 912 | consumer = ipa_rm_peers_list_get_resource(peers_index, |
| 913 | producer->resource.peers_list); |
| 914 | if (consumer) { |
| 915 | producer->pending_release++; |
| 916 | consumer_result = ipa_rm_resource_consumer_release( |
| 917 | (struct ipa_rm_resource_cons *)consumer, |
| 918 | producer->resource.max_bw, |
| 919 | true); |
| 920 | producer->pending_release--; |
| 921 | } |
| 922 | } |
| 923 | |
| 924 | if (producer->pending_release == 0) { |
| 925 | producer->resource.state = IPA_RM_RELEASED; |
| 926 | ipa_rm_perf_profile_change(producer->resource.name); |
| 927 | (void) ipa_rm_wq_send_cmd(IPA_RM_WQ_NOTIFY_PROD, |
| 928 | producer->resource.name, |
| 929 | IPA_RM_RESOURCE_RELEASED, |
| 930 | true); |
| 931 | } |
| 932 | bail: |
| 933 | if (state != producer->resource.state) |
| 934 | IPA_RM_DBG_LOW("%s state changed %d->%d\n", |
| 935 | ipa_rm_resource_str(producer->resource.name), |
| 936 | state, |
| 937 | producer->resource.state); |
| 938 | |
| 939 | return result; |
| 940 | } |
| 941 | |
| 942 | static void ipa_rm_resource_producer_handle_cb( |
| 943 | struct ipa_rm_resource_prod *producer, |
| 944 | enum ipa_rm_event event) |
| 945 | { |
| 946 | IPA_RM_DBG_LOW("%s state: %d event: %d pending_request: %d\n", |
| 947 | ipa_rm_resource_str(producer->resource.name), |
| 948 | producer->resource.state, |
| 949 | event, |
| 950 | producer->pending_request); |
| 951 | |
| 952 | switch (producer->resource.state) { |
| 953 | case IPA_RM_REQUEST_IN_PROGRESS: |
| 954 | if (event != IPA_RM_RESOURCE_GRANTED) |
| 955 | goto unlock_and_bail; |
| 956 | if (producer->pending_request > 0) { |
| 957 | producer->pending_request--; |
| 958 | if (producer->pending_request == 0) { |
| 959 | producer->resource.state = |
| 960 | IPA_RM_GRANTED; |
| 961 | ipa_rm_perf_profile_change( |
| 962 | producer->resource.name); |
| 963 | ipa_rm_resource_producer_notify_clients( |
| 964 | producer, |
| 965 | IPA_RM_RESOURCE_GRANTED, |
| 966 | false); |
| 967 | goto bail; |
| 968 | } |
| 969 | } |
| 970 | break; |
| 971 | case IPA_RM_RELEASE_IN_PROGRESS: |
| 972 | if (event != IPA_RM_RESOURCE_RELEASED) |
| 973 | goto unlock_and_bail; |
| 974 | if (producer->pending_release > 0) { |
| 975 | producer->pending_release--; |
| 976 | if (producer->pending_release == 0) { |
| 977 | producer->resource.state = |
| 978 | IPA_RM_RELEASED; |
| 979 | ipa_rm_perf_profile_change( |
| 980 | producer->resource.name); |
| 981 | ipa_rm_resource_producer_notify_clients( |
| 982 | producer, |
| 983 | IPA_RM_RESOURCE_RELEASED, |
| 984 | false); |
| 985 | goto bail; |
| 986 | } |
| 987 | } |
| 988 | break; |
| 989 | case IPA_RM_GRANTED: |
| 990 | case IPA_RM_RELEASED: |
| 991 | default: |
| 992 | goto unlock_and_bail; |
| 993 | } |
| 994 | unlock_and_bail: |
| 995 | IPA_RM_DBG_LOW("%s new state: %d\n", |
| 996 | ipa_rm_resource_str(producer->resource.name), |
| 997 | producer->resource.state); |
| 998 | bail: |
| 999 | return; |
| 1000 | } |
| 1001 | |
| 1002 | /** |
| 1003 | * ipa_rm_resource_consumer_handle_cb() - propagates resource |
| 1004 | * notification to all dependent producers |
| 1005 | * @consumer: [in] notifying resource |
| 1006 | * |
| 1007 | */ |
| 1008 | void ipa_rm_resource_consumer_handle_cb(struct ipa_rm_resource_cons *consumer, |
| 1009 | enum ipa_rm_event event) |
| 1010 | { |
| 1011 | int peers_index; |
| 1012 | struct ipa_rm_resource *producer; |
| 1013 | |
| 1014 | if (!consumer) { |
| 1015 | IPA_RM_ERR("invalid params\n"); |
| 1016 | return; |
| 1017 | } |
| 1018 | IPA_RM_DBG_LOW("%s state: %d event: %d\n", |
| 1019 | ipa_rm_resource_str(consumer->resource.name), |
| 1020 | consumer->resource.state, |
| 1021 | event); |
| 1022 | |
| 1023 | switch (consumer->resource.state) { |
| 1024 | case IPA_RM_REQUEST_IN_PROGRESS: |
| 1025 | if (event == IPA_RM_RESOURCE_RELEASED) |
| 1026 | goto bail; |
| 1027 | consumer->resource.state = IPA_RM_GRANTED; |
| 1028 | ipa_rm_perf_profile_change(consumer->resource.name); |
| 1029 | ipa_resume_resource(consumer->resource.name); |
| 1030 | complete_all(&consumer->request_consumer_in_progress); |
| 1031 | break; |
| 1032 | case IPA_RM_RELEASE_IN_PROGRESS: |
| 1033 | if (event == IPA_RM_RESOURCE_GRANTED) |
| 1034 | goto bail; |
| 1035 | consumer->resource.state = IPA_RM_RELEASED; |
| 1036 | break; |
| 1037 | case IPA_RM_GRANTED: |
| 1038 | case IPA_RM_RELEASED: |
| 1039 | default: |
| 1040 | goto bail; |
| 1041 | } |
| 1042 | |
| 1043 | for (peers_index = 0; |
| 1044 | peers_index < ipa_rm_peers_list_get_size( |
| 1045 | consumer->resource.peers_list); |
| 1046 | peers_index++) { |
| 1047 | producer = ipa_rm_peers_list_get_resource(peers_index, |
| 1048 | consumer->resource.peers_list); |
| 1049 | if (producer) |
| 1050 | ipa_rm_resource_producer_handle_cb( |
| 1051 | (struct ipa_rm_resource_prod *) |
| 1052 | producer, |
| 1053 | event); |
| 1054 | } |
| 1055 | |
| 1056 | return; |
| 1057 | bail: |
| 1058 | IPA_RM_DBG_LOW("%s new state: %d\n", |
| 1059 | ipa_rm_resource_str(consumer->resource.name), |
| 1060 | consumer->resource.state); |
| 1061 | } |
| 1062 | |
| 1063 | /* |
| 1064 | * ipa_rm_resource_set_perf_profile() - sets the performance profile to |
| 1065 | * resource. |
| 1066 | * |
| 1067 | * @resource: [in] resource |
| 1068 | * @profile: [in] profile to be set |
| 1069 | * |
| 1070 | * sets the profile to the given resource, In case the resource is |
| 1071 | * granted, update bandwidth vote of the resource |
| 1072 | */ |
| 1073 | int ipa_rm_resource_set_perf_profile(struct ipa_rm_resource *resource, |
| 1074 | struct ipa_rm_perf_profile *profile) |
| 1075 | { |
| 1076 | int peers_index; |
| 1077 | struct ipa_rm_resource *peer; |
| 1078 | |
| 1079 | if (!resource || !profile) { |
| 1080 | IPA_RM_ERR("invalid params\n"); |
| 1081 | return -EINVAL; |
| 1082 | } |
| 1083 | |
| 1084 | if (profile->max_supported_bandwidth_mbps == resource->max_bw) { |
| 1085 | IPA_RM_DBG_LOW("same profile\n"); |
| 1086 | return 0; |
| 1087 | } |
| 1088 | |
| 1089 | if ((resource->type == IPA_RM_PRODUCER && |
| 1090 | (resource->state == IPA_RM_GRANTED || |
| 1091 | resource->state == IPA_RM_REQUEST_IN_PROGRESS)) || |
| 1092 | resource->type == IPA_RM_CONSUMER) { |
| 1093 | for (peers_index = 0; |
| 1094 | peers_index < ipa_rm_peers_list_get_size( |
| 1095 | resource->peers_list); |
| 1096 | peers_index++) { |
| 1097 | peer = ipa_rm_peers_list_get_resource(peers_index, |
| 1098 | resource->peers_list); |
| 1099 | if (!peer) |
| 1100 | continue; |
| 1101 | peer->needed_bw -= resource->max_bw; |
| 1102 | peer->needed_bw += |
| 1103 | profile->max_supported_bandwidth_mbps; |
| 1104 | if (peer->state == IPA_RM_GRANTED) |
| 1105 | ipa_rm_perf_profile_change(peer->name); |
| 1106 | } |
| 1107 | } |
| 1108 | |
| 1109 | resource->max_bw = profile->max_supported_bandwidth_mbps; |
| 1110 | if (resource->state == IPA_RM_GRANTED) |
| 1111 | ipa_rm_perf_profile_change(resource->name); |
| 1112 | |
| 1113 | return 0; |
| 1114 | } |
| 1115 | |
| 1116 | |
| 1117 | /* |
| 1118 | * ipa_rm_resource_producer_print_stat() - print the |
| 1119 | * resource status and all his dependencies |
| 1120 | * |
| 1121 | * @resource: [in] Resource resource |
| 1122 | * @buff: [in] The buf used to print |
| 1123 | * @size: [in] Buf size |
| 1124 | * |
| 1125 | * Returns: number of bytes used on success, negative on failure |
| 1126 | */ |
| 1127 | int ipa_rm_resource_producer_print_stat( |
| 1128 | struct ipa_rm_resource *resource, |
| 1129 | char *buf, |
| 1130 | int size){ |
| 1131 | |
| 1132 | int i; |
| 1133 | int nbytes; |
| 1134 | int cnt = 0; |
| 1135 | struct ipa_rm_resource *consumer; |
| 1136 | |
| 1137 | if (!buf || size < 0) |
| 1138 | return -EINVAL; |
| 1139 | |
| 1140 | nbytes = scnprintf(buf + cnt, size - cnt, |
| 1141 | ipa_rm_resource_str(resource->name)); |
| 1142 | cnt += nbytes; |
| 1143 | nbytes = scnprintf(buf + cnt, size - cnt, "[%d, ", resource->max_bw); |
| 1144 | cnt += nbytes; |
| 1145 | |
| 1146 | switch (resource->state) { |
| 1147 | case IPA_RM_RELEASED: |
| 1148 | nbytes = scnprintf(buf + cnt, size - cnt, |
| 1149 | "Released] -> "); |
| 1150 | cnt += nbytes; |
| 1151 | break; |
| 1152 | case IPA_RM_REQUEST_IN_PROGRESS: |
| 1153 | nbytes = scnprintf(buf + cnt, size - cnt, |
| 1154 | "Request In Progress] -> "); |
| 1155 | cnt += nbytes; |
| 1156 | break; |
| 1157 | case IPA_RM_GRANTED: |
| 1158 | nbytes = scnprintf(buf + cnt, size - cnt, |
| 1159 | "Granted] -> "); |
| 1160 | cnt += nbytes; |
| 1161 | break; |
| 1162 | case IPA_RM_RELEASE_IN_PROGRESS: |
| 1163 | nbytes = scnprintf(buf + cnt, size - cnt, |
| 1164 | "Release In Progress] -> "); |
| 1165 | cnt += nbytes; |
| 1166 | break; |
| 1167 | default: |
| 1168 | return -EPERM; |
| 1169 | } |
| 1170 | |
| 1171 | for (i = 0; i < resource->peers_list->max_peers; ++i) { |
| 1172 | consumer = |
| 1173 | ipa_rm_peers_list_get_resource( |
| 1174 | i, |
| 1175 | resource->peers_list); |
| 1176 | if (consumer) { |
| 1177 | nbytes = scnprintf(buf + cnt, size - cnt, |
| 1178 | ipa_rm_resource_str(consumer->name)); |
| 1179 | cnt += nbytes; |
| 1180 | nbytes = scnprintf(buf + cnt, size - cnt, "[%d, ", |
| 1181 | consumer->max_bw); |
| 1182 | cnt += nbytes; |
| 1183 | |
| 1184 | switch (consumer->state) { |
| 1185 | case IPA_RM_RELEASED: |
| 1186 | nbytes = scnprintf(buf + cnt, size - cnt, |
| 1187 | "Released], "); |
| 1188 | cnt += nbytes; |
| 1189 | break; |
| 1190 | case IPA_RM_REQUEST_IN_PROGRESS: |
| 1191 | nbytes = scnprintf(buf + cnt, size - cnt, |
| 1192 | "Request In Progress], "); |
| 1193 | cnt += nbytes; |
| 1194 | break; |
| 1195 | case IPA_RM_GRANTED: |
| 1196 | nbytes = scnprintf(buf + cnt, size - cnt, |
| 1197 | "Granted], "); |
| 1198 | cnt += nbytes; |
| 1199 | break; |
| 1200 | case IPA_RM_RELEASE_IN_PROGRESS: |
| 1201 | nbytes = scnprintf(buf + cnt, size - cnt, |
| 1202 | "Release In Progress], "); |
| 1203 | cnt += nbytes; |
| 1204 | break; |
| 1205 | default: |
| 1206 | return -EPERM; |
| 1207 | } |
| 1208 | } |
| 1209 | } |
| 1210 | nbytes = scnprintf(buf + cnt, size - cnt, "\n"); |
| 1211 | cnt += nbytes; |
| 1212 | |
| 1213 | return cnt; |
| 1214 | } |