1 // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only) 2 /* Copyright(c) 2014 - 2020 Intel Corporation */ 3 #include <linux/mutex.h> 4 #include <linux/list.h> 5 #include <linux/bitops.h> 6 #include <linux/delay.h> 7 #include "adf_accel_devices.h" 8 #include "adf_cfg.h" 9 #include "adf_common_drv.h" 10 #include "adf_dbgfs.h" 11 #include "adf_heartbeat.h" 12 #include "adf_rl.h" 13 #include "adf_sysfs_ras_counters.h" 14 #include "adf_telemetry.h" 15 16 static LIST_HEAD(service_table); 17 static DEFINE_MUTEX(service_lock); 18 19 static void adf_service_add(struct service_hndl *service) 20 { 21 mutex_lock(&service_lock); 22 list_add(&service->list, &service_table); 23 mutex_unlock(&service_lock); 24 } 25 26 int adf_service_register(struct service_hndl *service) 27 { 28 memset(service->init_status, 0, sizeof(service->init_status)); 29 memset(service->start_status, 0, sizeof(service->start_status)); 30 adf_service_add(service); 31 return 0; 32 } 33 34 static void adf_service_remove(struct service_hndl *service) 35 { 36 mutex_lock(&service_lock); 37 list_del(&service->list); 38 mutex_unlock(&service_lock); 39 } 40 41 int adf_service_unregister(struct service_hndl *service) 42 { 43 int i; 44 45 for (i = 0; i < ARRAY_SIZE(service->init_status); i++) { 46 if (service->init_status[i] || service->start_status[i]) { 47 pr_err("QAT: Could not remove active service\n"); 48 return -EFAULT; 49 } 50 } 51 adf_service_remove(service); 52 return 0; 53 } 54 55 /** 56 * adf_dev_init() - Init data structures and services for the given accel device 57 * @accel_dev: Pointer to acceleration device. 58 * 59 * Initialize the ring data structures and the admin comms and arbitration 60 * services. 61 * 62 * Return: 0 on success, error code otherwise. 63 */ 64 static int adf_dev_init(struct adf_accel_dev *accel_dev) 65 { 66 struct service_hndl *service; 67 struct adf_hw_device_data *hw_data = accel_dev->hw_device; 68 int ret; 69 70 if (!hw_data) { 71 dev_err(&GET_DEV(accel_dev), 72 "Failed to init device - hw_data not set\n"); 73 return -EFAULT; 74 } 75 76 if (!test_bit(ADF_STATUS_CONFIGURED, &accel_dev->status) && 77 !accel_dev->is_vf) { 78 dev_err(&GET_DEV(accel_dev), "Device not configured\n"); 79 return -EFAULT; 80 } 81 82 if (adf_init_etr_data(accel_dev)) { 83 dev_err(&GET_DEV(accel_dev), "Failed initialize etr\n"); 84 return -EFAULT; 85 } 86 87 if (hw_data->init_device && hw_data->init_device(accel_dev)) { 88 dev_err(&GET_DEV(accel_dev), "Failed to initialize device\n"); 89 return -EFAULT; 90 } 91 92 if (hw_data->init_admin_comms && hw_data->init_admin_comms(accel_dev)) { 93 dev_err(&GET_DEV(accel_dev), "Failed initialize admin comms\n"); 94 return -EFAULT; 95 } 96 97 if (hw_data->init_arb && hw_data->init_arb(accel_dev)) { 98 dev_err(&GET_DEV(accel_dev), "Failed initialize hw arbiter\n"); 99 return -EFAULT; 100 } 101 102 if (hw_data->get_ring_to_svc_map) 103 hw_data->ring_to_svc_map = hw_data->get_ring_to_svc_map(accel_dev); 104 105 if (adf_ae_init(accel_dev)) { 106 dev_err(&GET_DEV(accel_dev), 107 "Failed to initialise Acceleration Engine\n"); 108 return -EFAULT; 109 } 110 set_bit(ADF_STATUS_AE_INITIALISED, &accel_dev->status); 111 112 if (adf_ae_fw_load(accel_dev)) { 113 dev_err(&GET_DEV(accel_dev), 114 "Failed to load acceleration FW\n"); 115 return -EFAULT; 116 } 117 set_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status); 118 119 if (hw_data->alloc_irq(accel_dev)) { 120 dev_err(&GET_DEV(accel_dev), "Failed to allocate interrupts\n"); 121 return -EFAULT; 122 } 123 set_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status); 124 125 if (hw_data->ras_ops.enable_ras_errors) 126 hw_data->ras_ops.enable_ras_errors(accel_dev); 127 128 hw_data->enable_ints(accel_dev); 129 hw_data->enable_error_correction(accel_dev); 130 131 ret = hw_data->pfvf_ops.enable_comms(accel_dev); 132 if (ret) 133 return ret; 134 135 if (!test_bit(ADF_STATUS_CONFIGURED, &accel_dev->status) && 136 accel_dev->is_vf) { 137 if (qat_crypto_vf_dev_config(accel_dev)) 138 return -EFAULT; 139 } 140 141 adf_heartbeat_init(accel_dev); 142 ret = adf_rl_init(accel_dev); 143 if (ret && ret != -EOPNOTSUPP) 144 return ret; 145 146 ret = adf_tl_init(accel_dev); 147 if (ret && ret != -EOPNOTSUPP) 148 return ret; 149 150 /* 151 * Subservice initialisation is divided into two stages: init and start. 152 * This is to facilitate any ordering dependencies between services 153 * prior to starting any of the accelerators. 154 */ 155 list_for_each_entry(service, &service_table, list) { 156 if (service->event_hld(accel_dev, ADF_EVENT_INIT)) { 157 dev_err(&GET_DEV(accel_dev), 158 "Failed to initialise service %s\n", 159 service->name); 160 return -EFAULT; 161 } 162 set_bit(accel_dev->accel_id, service->init_status); 163 } 164 165 return 0; 166 } 167 168 /** 169 * adf_dev_start() - Start acceleration service for the given accel device 170 * @accel_dev: Pointer to acceleration device. 171 * 172 * Function notifies all the registered services that the acceleration device 173 * is ready to be used. 174 * To be used by QAT device specific drivers. 175 * 176 * Return: 0 on success, error code otherwise. 177 */ 178 static int adf_dev_start(struct adf_accel_dev *accel_dev) 179 { 180 struct adf_hw_device_data *hw_data = accel_dev->hw_device; 181 struct service_hndl *service; 182 int ret; 183 184 set_bit(ADF_STATUS_STARTING, &accel_dev->status); 185 186 if (adf_ae_start(accel_dev)) { 187 dev_err(&GET_DEV(accel_dev), "AE Start Failed\n"); 188 return -EFAULT; 189 } 190 set_bit(ADF_STATUS_AE_STARTED, &accel_dev->status); 191 192 if (hw_data->send_admin_init(accel_dev)) { 193 dev_err(&GET_DEV(accel_dev), "Failed to send init message\n"); 194 return -EFAULT; 195 } 196 197 if (hw_data->measure_clock) { 198 ret = hw_data->measure_clock(accel_dev); 199 if (ret) { 200 dev_err(&GET_DEV(accel_dev), "Failed measure device clock\n"); 201 return ret; 202 } 203 } 204 205 /* Set ssm watch dog timer */ 206 if (hw_data->set_ssm_wdtimer) 207 hw_data->set_ssm_wdtimer(accel_dev); 208 209 /* Enable Power Management */ 210 if (hw_data->enable_pm && hw_data->enable_pm(accel_dev)) { 211 dev_err(&GET_DEV(accel_dev), "Failed to configure Power Management\n"); 212 return -EFAULT; 213 } 214 215 if (hw_data->start_timer) { 216 ret = hw_data->start_timer(accel_dev); 217 if (ret) { 218 dev_err(&GET_DEV(accel_dev), "Failed to start internal sync timer\n"); 219 return ret; 220 } 221 } 222 223 adf_heartbeat_start(accel_dev); 224 ret = adf_rl_start(accel_dev); 225 if (ret && ret != -EOPNOTSUPP) 226 return ret; 227 228 ret = adf_tl_start(accel_dev); 229 if (ret && ret != -EOPNOTSUPP) 230 return ret; 231 232 list_for_each_entry(service, &service_table, list) { 233 if (service->event_hld(accel_dev, ADF_EVENT_START)) { 234 dev_err(&GET_DEV(accel_dev), 235 "Failed to start service %s\n", 236 service->name); 237 return -EFAULT; 238 } 239 set_bit(accel_dev->accel_id, service->start_status); 240 } 241 242 clear_bit(ADF_STATUS_STARTING, &accel_dev->status); 243 set_bit(ADF_STATUS_STARTED, &accel_dev->status); 244 245 if (!list_empty(&accel_dev->crypto_list) && 246 (qat_algs_register() || qat_asym_algs_register())) { 247 dev_err(&GET_DEV(accel_dev), 248 "Failed to register crypto algs\n"); 249 set_bit(ADF_STATUS_STARTING, &accel_dev->status); 250 clear_bit(ADF_STATUS_STARTED, &accel_dev->status); 251 return -EFAULT; 252 } 253 set_bit(ADF_STATUS_CRYPTO_ALGS_REGISTERED, &accel_dev->status); 254 255 if (!list_empty(&accel_dev->compression_list) && qat_comp_algs_register()) { 256 dev_err(&GET_DEV(accel_dev), 257 "Failed to register compression algs\n"); 258 set_bit(ADF_STATUS_STARTING, &accel_dev->status); 259 clear_bit(ADF_STATUS_STARTED, &accel_dev->status); 260 return -EFAULT; 261 } 262 set_bit(ADF_STATUS_COMP_ALGS_REGISTERED, &accel_dev->status); 263 264 adf_dbgfs_add(accel_dev); 265 adf_sysfs_start_ras(accel_dev); 266 267 return 0; 268 } 269 270 /** 271 * adf_dev_stop() - Stop acceleration service for the given accel device 272 * @accel_dev: Pointer to acceleration device. 273 * 274 * Function notifies all the registered services that the acceleration device 275 * is shuting down. 276 * To be used by QAT device specific drivers. 277 * 278 * Return: void 279 */ 280 static void adf_dev_stop(struct adf_accel_dev *accel_dev) 281 { 282 struct adf_hw_device_data *hw_data = accel_dev->hw_device; 283 struct service_hndl *service; 284 bool wait = false; 285 int ret; 286 287 if (!adf_dev_started(accel_dev) && 288 !test_bit(ADF_STATUS_STARTING, &accel_dev->status)) 289 return; 290 291 adf_tl_stop(accel_dev); 292 adf_rl_stop(accel_dev); 293 adf_dbgfs_rm(accel_dev); 294 adf_sysfs_stop_ras(accel_dev); 295 296 clear_bit(ADF_STATUS_STARTING, &accel_dev->status); 297 clear_bit(ADF_STATUS_STARTED, &accel_dev->status); 298 299 if (!list_empty(&accel_dev->crypto_list) && 300 test_bit(ADF_STATUS_CRYPTO_ALGS_REGISTERED, &accel_dev->status)) { 301 qat_algs_unregister(); 302 qat_asym_algs_unregister(); 303 } 304 clear_bit(ADF_STATUS_CRYPTO_ALGS_REGISTERED, &accel_dev->status); 305 306 if (!list_empty(&accel_dev->compression_list) && 307 test_bit(ADF_STATUS_COMP_ALGS_REGISTERED, &accel_dev->status)) 308 qat_comp_algs_unregister(); 309 clear_bit(ADF_STATUS_COMP_ALGS_REGISTERED, &accel_dev->status); 310 311 list_for_each_entry(service, &service_table, list) { 312 if (!test_bit(accel_dev->accel_id, service->start_status)) 313 continue; 314 ret = service->event_hld(accel_dev, ADF_EVENT_STOP); 315 if (!ret) { 316 clear_bit(accel_dev->accel_id, service->start_status); 317 } else if (ret == -EAGAIN) { 318 wait = true; 319 clear_bit(accel_dev->accel_id, service->start_status); 320 } 321 } 322 323 if (hw_data->stop_timer) 324 hw_data->stop_timer(accel_dev); 325 326 hw_data->disable_iov(accel_dev); 327 328 if (wait) 329 msleep(100); 330 331 if (test_bit(ADF_STATUS_AE_STARTED, &accel_dev->status)) { 332 if (adf_ae_stop(accel_dev)) 333 dev_err(&GET_DEV(accel_dev), "failed to stop AE\n"); 334 else 335 clear_bit(ADF_STATUS_AE_STARTED, &accel_dev->status); 336 } 337 } 338 339 /** 340 * adf_dev_shutdown() - shutdown acceleration services and data strucutures 341 * @accel_dev: Pointer to acceleration device 342 * 343 * Cleanup the ring data structures and the admin comms and arbitration 344 * services. 345 */ 346 static void adf_dev_shutdown(struct adf_accel_dev *accel_dev) 347 { 348 struct adf_hw_device_data *hw_data = accel_dev->hw_device; 349 struct service_hndl *service; 350 351 if (!hw_data) { 352 dev_err(&GET_DEV(accel_dev), 353 "QAT: Failed to shutdown device - hw_data not set\n"); 354 return; 355 } 356 357 if (test_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status)) { 358 adf_ae_fw_release(accel_dev); 359 clear_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status); 360 } 361 362 if (test_bit(ADF_STATUS_AE_INITIALISED, &accel_dev->status)) { 363 if (adf_ae_shutdown(accel_dev)) 364 dev_err(&GET_DEV(accel_dev), 365 "Failed to shutdown Accel Engine\n"); 366 else 367 clear_bit(ADF_STATUS_AE_INITIALISED, 368 &accel_dev->status); 369 } 370 371 list_for_each_entry(service, &service_table, list) { 372 if (!test_bit(accel_dev->accel_id, service->init_status)) 373 continue; 374 if (service->event_hld(accel_dev, ADF_EVENT_SHUTDOWN)) 375 dev_err(&GET_DEV(accel_dev), 376 "Failed to shutdown service %s\n", 377 service->name); 378 else 379 clear_bit(accel_dev->accel_id, service->init_status); 380 } 381 382 adf_rl_exit(accel_dev); 383 384 if (hw_data->ras_ops.disable_ras_errors) 385 hw_data->ras_ops.disable_ras_errors(accel_dev); 386 387 adf_heartbeat_shutdown(accel_dev); 388 389 adf_tl_shutdown(accel_dev); 390 391 if (test_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status)) { 392 hw_data->free_irq(accel_dev); 393 clear_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status); 394 } 395 396 /* If not restarting, delete all cfg sections except for GENERAL */ 397 if (!test_bit(ADF_STATUS_RESTARTING, &accel_dev->status)) 398 adf_cfg_del_all_except(accel_dev, ADF_GENERAL_SEC); 399 400 if (hw_data->exit_arb) 401 hw_data->exit_arb(accel_dev); 402 403 if (hw_data->exit_admin_comms) 404 hw_data->exit_admin_comms(accel_dev); 405 406 adf_cleanup_etr_data(accel_dev); 407 adf_dev_restore(accel_dev); 408 } 409 410 int adf_dev_restarting_notify(struct adf_accel_dev *accel_dev) 411 { 412 struct service_hndl *service; 413 414 list_for_each_entry(service, &service_table, list) { 415 if (service->event_hld(accel_dev, ADF_EVENT_RESTARTING)) 416 dev_err(&GET_DEV(accel_dev), 417 "Failed to restart service %s.\n", 418 service->name); 419 } 420 return 0; 421 } 422 423 int adf_dev_restarted_notify(struct adf_accel_dev *accel_dev) 424 { 425 struct service_hndl *service; 426 427 list_for_each_entry(service, &service_table, list) { 428 if (service->event_hld(accel_dev, ADF_EVENT_RESTARTED)) 429 dev_err(&GET_DEV(accel_dev), 430 "Failed to restart service %s.\n", 431 service->name); 432 } 433 return 0; 434 } 435 436 void adf_error_notifier(struct adf_accel_dev *accel_dev) 437 { 438 struct service_hndl *service; 439 440 list_for_each_entry(service, &service_table, list) { 441 if (service->event_hld(accel_dev, ADF_EVENT_FATAL_ERROR)) 442 dev_err(&GET_DEV(accel_dev), 443 "Failed to send error event to %s.\n", 444 service->name); 445 } 446 } 447 448 int adf_dev_down(struct adf_accel_dev *accel_dev) 449 { 450 int ret = 0; 451 452 if (!accel_dev) 453 return -EINVAL; 454 455 mutex_lock(&accel_dev->state_lock); 456 457 adf_dev_stop(accel_dev); 458 adf_dev_shutdown(accel_dev); 459 460 mutex_unlock(&accel_dev->state_lock); 461 return ret; 462 } 463 EXPORT_SYMBOL_GPL(adf_dev_down); 464 465 int adf_dev_up(struct adf_accel_dev *accel_dev, bool config) 466 { 467 int ret = 0; 468 469 if (!accel_dev) 470 return -EINVAL; 471 472 mutex_lock(&accel_dev->state_lock); 473 474 if (adf_dev_started(accel_dev)) { 475 dev_info(&GET_DEV(accel_dev), "Device qat_dev%d already up\n", 476 accel_dev->accel_id); 477 ret = -EALREADY; 478 goto out; 479 } 480 481 if (config && GET_HW_DATA(accel_dev)->dev_config) { 482 ret = GET_HW_DATA(accel_dev)->dev_config(accel_dev); 483 if (unlikely(ret)) 484 goto out; 485 } 486 487 ret = adf_dev_init(accel_dev); 488 if (unlikely(ret)) 489 goto out; 490 491 ret = adf_dev_start(accel_dev); 492 493 out: 494 mutex_unlock(&accel_dev->state_lock); 495 return ret; 496 } 497 EXPORT_SYMBOL_GPL(adf_dev_up); 498 499 int adf_dev_restart(struct adf_accel_dev *accel_dev) 500 { 501 int ret = 0; 502 503 if (!accel_dev) 504 return -EFAULT; 505 506 adf_dev_down(accel_dev); 507 508 ret = adf_dev_up(accel_dev, false); 509 /* if device is already up return success*/ 510 if (ret == -EALREADY) 511 return 0; 512 513 return ret; 514 } 515 EXPORT_SYMBOL_GPL(adf_dev_restart); 516