1/* 2 * Copyright 2014 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 */ 23 24#include <linux/slab.h> 25#include <linux/mutex.h> 26#include "kfd_device_queue_manager.h" 27#include "kfd_kernel_queue.h" 28#include "kfd_priv.h" 29#include "kfd_pm4_headers.h" 30#include "kfd_pm4_opcodes.h" 31 32static inline void inc_wptr(unsigned int *wptr, unsigned int increment_bytes, 33 unsigned int buffer_size_bytes) 34{ 35 unsigned int temp = *wptr + increment_bytes / sizeof(uint32_t); 36 37 BUG_ON((temp * sizeof(uint32_t)) > buffer_size_bytes); 38 *wptr = temp; 39} 40 41static unsigned int build_pm4_header(unsigned int opcode, size_t packet_size) 42{ 43 union PM4_MES_TYPE_3_HEADER header; 44 45 header.u32all = 0; 46 header.opcode = opcode; 47 header.count = packet_size/sizeof(uint32_t) - 2; 48 header.type = PM4_TYPE_3; 49 50 return header.u32all; 51} 52 53static void pm_calc_rlib_size(struct packet_manager *pm, 54 unsigned int *rlib_size, 55 bool *over_subscription) 56{ 57 unsigned int process_count, queue_count; 58 59 BUG_ON(!pm || !rlib_size || !over_subscription); 60 61 process_count = pm->dqm->processes_count; 62 queue_count = pm->dqm->queue_count; 63 64 /* check if there is over subscription*/ 65 *over_subscription = false; 66 if ((process_count > 1) || 67 queue_count > PIPE_PER_ME_CP_SCHEDULING * QUEUES_PER_PIPE) { 68 *over_subscription = true; 69 pr_debug("kfd: over subscribed runlist\n"); 70 } 71 72 /* calculate run list ib allocation size */ 73 *rlib_size = process_count * sizeof(struct pm4_map_process) + 74 queue_count * sizeof(struct pm4_map_queues); 75 76 /* 77 * Increase the allocation size in case we need a chained run list 78 * when over subscription 79 */ 80 if (*over_subscription) 81 *rlib_size += sizeof(struct pm4_runlist); 82 83 pr_debug("kfd: runlist ib size %d\n", *rlib_size); 84} 85 86static int pm_allocate_runlist_ib(struct packet_manager *pm, 87 unsigned int **rl_buffer, 88 uint64_t *rl_gpu_buffer, 89 unsigned int *rl_buffer_size, 90 bool *is_over_subscription) 91{ 92 int retval; 93 94 BUG_ON(!pm); 95 BUG_ON(pm->allocated == true); 96 BUG_ON(is_over_subscription == NULL); 97 98 pm_calc_rlib_size(pm, rl_buffer_size, is_over_subscription); 99 100 retval = kfd_gtt_sa_allocate(pm->dqm->dev, *rl_buffer_size, 101 &pm->ib_buffer_obj); 102 103 if (retval != 0) { 104 pr_err("kfd: failed to allocate runlist IB\n"); 105 return retval; 106 } 107 108 *(void **)rl_buffer = pm->ib_buffer_obj->cpu_ptr; 109 *rl_gpu_buffer = pm->ib_buffer_obj->gpu_addr; 110 111 memset(*rl_buffer, 0, *rl_buffer_size); 112 pm->allocated = true; 113 return retval; 114} 115 116static int pm_create_runlist(struct packet_manager *pm, uint32_t *buffer, 117 uint64_t ib, size_t ib_size_in_dwords, bool chain) 118{ 119 struct pm4_runlist *packet; 120 121 BUG_ON(!pm || !buffer || !ib); 122 123 packet = (struct pm4_runlist *)buffer; 124 125 memset(buffer, 0, sizeof(struct pm4_runlist)); 126 packet->header.u32all = build_pm4_header(IT_RUN_LIST, 127 sizeof(struct pm4_runlist)); 128 129 packet->bitfields4.ib_size = ib_size_in_dwords; 130 packet->bitfields4.chain = chain ? 1 : 0; 131 packet->bitfields4.offload_polling = 0; 132 packet->bitfields4.valid = 1; 133 packet->ordinal2 = lower_32_bits(ib); 134 packet->bitfields3.ib_base_hi = upper_32_bits(ib); 135 136 return 0; 137} 138 139static int pm_create_map_process(struct packet_manager *pm, uint32_t *buffer, 140 struct qcm_process_device *qpd) 141{ 142 struct pm4_map_process *packet; 143 struct queue *cur; 144 uint32_t num_queues; 145 146 BUG_ON(!pm || !buffer || !qpd); 147 148 packet = (struct pm4_map_process *)buffer; 149 150 pr_debug("kfd: In func %s\n", __func__); 151 152 memset(buffer, 0, sizeof(struct pm4_map_process)); 153 154 packet->header.u32all = build_pm4_header(IT_MAP_PROCESS, 155 sizeof(struct pm4_map_process)); 156 packet->bitfields2.diq_enable = (qpd->is_debug) ? 1 : 0; 157 packet->bitfields2.process_quantum = 1; 158 packet->bitfields2.pasid = qpd->pqm->process->pasid; 159 packet->bitfields3.page_table_base = qpd->page_table_base; 160 packet->bitfields10.gds_size = qpd->gds_size; 161 packet->bitfields10.num_gws = qpd->num_gws; 162 packet->bitfields10.num_oac = qpd->num_oac; 163 num_queues = 0; 164 list_for_each_entry(cur, &qpd->queues_list, list) 165 num_queues++; 166 packet->bitfields10.num_queues = num_queues; 167 168 packet->sh_mem_config = qpd->sh_mem_config; 169 packet->sh_mem_bases = qpd->sh_mem_bases; 170 packet->sh_mem_ape1_base = qpd->sh_mem_ape1_base; 171 packet->sh_mem_ape1_limit = qpd->sh_mem_ape1_limit; 172 173 packet->gds_addr_lo = lower_32_bits(qpd->gds_context_area); 174 packet->gds_addr_hi = upper_32_bits(qpd->gds_context_area); 175 176 return 0; 177} 178 179static int pm_create_map_queue(struct packet_manager *pm, uint32_t *buffer, 180 struct queue *q) 181{ 182 struct pm4_map_queues *packet; 183 184 BUG_ON(!pm || !buffer || !q); 185 186 pr_debug("kfd: In func %s\n", __func__); 187 188 packet = (struct pm4_map_queues *)buffer; 189 memset(buffer, 0, sizeof(struct pm4_map_queues)); 190 191 packet->header.u32all = build_pm4_header(IT_MAP_QUEUES, 192 sizeof(struct pm4_map_queues)); 193 packet->bitfields2.alloc_format = 194 alloc_format__mes_map_queues__one_per_pipe; 195 packet->bitfields2.num_queues = 1; 196 packet->bitfields2.queue_sel = 197 queue_sel__mes_map_queues__map_to_hws_determined_queue_slots; 198 199 packet->bitfields2.vidmem = (q->properties.is_interop) ? 200 vidmem__mes_map_queues__uses_video_memory : 201 vidmem__mes_map_queues__uses_no_video_memory; 202 203 switch (q->properties.type) { 204 case KFD_QUEUE_TYPE_COMPUTE: 205 case KFD_QUEUE_TYPE_DIQ: 206 packet->bitfields2.engine_sel = 207 engine_sel__mes_map_queues__compute; 208 break; 209 case KFD_QUEUE_TYPE_SDMA: 210 packet->bitfields2.engine_sel = 211 engine_sel__mes_map_queues__sdma0; 212 break; 213 default: 214 BUG(); 215 break; 216 } 217 218 packet->mes_map_queues_ordinals[0].bitfields3.doorbell_offset = 219 q->properties.doorbell_off; 220 221 packet->mes_map_queues_ordinals[0].mqd_addr_lo = 222 lower_32_bits(q->gart_mqd_addr); 223 224 packet->mes_map_queues_ordinals[0].mqd_addr_hi = 225 upper_32_bits(q->gart_mqd_addr); 226 227 packet->mes_map_queues_ordinals[0].wptr_addr_lo = 228 lower_32_bits((uint64_t)q->properties.write_ptr); 229 230 packet->mes_map_queues_ordinals[0].wptr_addr_hi = 231 upper_32_bits((uint64_t)q->properties.write_ptr); 232 233 return 0; 234} 235 236static int pm_create_runlist_ib(struct packet_manager *pm, 237 struct list_head *queues, 238 uint64_t *rl_gpu_addr, 239 size_t *rl_size_bytes) 240{ 241 unsigned int alloc_size_bytes; 242 unsigned int *rl_buffer, rl_wptr, i; 243 int retval, proccesses_mapped; 244 struct device_process_node *cur; 245 struct qcm_process_device *qpd; 246 struct queue *q; 247 struct kernel_queue *kq; 248 bool is_over_subscription; 249 250 BUG_ON(!pm || !queues || !rl_size_bytes || !rl_gpu_addr); 251 252 rl_wptr = retval = proccesses_mapped = 0; 253 254 retval = pm_allocate_runlist_ib(pm, &rl_buffer, rl_gpu_addr, 255 &alloc_size_bytes, &is_over_subscription); 256 if (retval != 0) 257 return retval; 258 259 *rl_size_bytes = alloc_size_bytes; 260 261 pr_debug("kfd: In func %s\n", __func__); 262 pr_debug("kfd: building runlist ib process count: %d queues count %d\n", 263 pm->dqm->processes_count, pm->dqm->queue_count); 264 265 /* build the run list ib packet */ 266 list_for_each_entry(cur, queues, list) { 267 qpd = cur->qpd; 268 /* build map process packet */ 269 if (proccesses_mapped >= pm->dqm->processes_count) { 270 pr_debug("kfd: not enough space left in runlist IB\n"); 271 pm_release_ib(pm); 272 return -ENOMEM; 273 } 274 retval = pm_create_map_process(pm, &rl_buffer[rl_wptr], qpd); 275 if (retval != 0) 276 return retval; 277 proccesses_mapped++; 278 inc_wptr(&rl_wptr, sizeof(struct pm4_map_process), 279 alloc_size_bytes); 280 281 list_for_each_entry(kq, &qpd->priv_queue_list, list) { 282 if (kq->queue->properties.is_active != true) 283 continue; 284 retval = pm_create_map_queue(pm, &rl_buffer[rl_wptr], 285 kq->queue); 286 if (retval != 0) 287 return retval; 288 inc_wptr(&rl_wptr, sizeof(struct pm4_map_queues), 289 alloc_size_bytes); 290 } 291 292 list_for_each_entry(q, &qpd->queues_list, list) { 293 if (q->properties.is_active != true) 294 continue; 295 retval = pm_create_map_queue(pm, 296 &rl_buffer[rl_wptr], q); 297 if (retval != 0) 298 return retval; 299 inc_wptr(&rl_wptr, sizeof(struct pm4_map_queues), 300 alloc_size_bytes); 301 } 302 } 303 304 pr_debug("kfd: finished map process and queues to runlist\n"); 305 306 if (is_over_subscription) 307 pm_create_runlist(pm, &rl_buffer[rl_wptr], *rl_gpu_addr, 308 alloc_size_bytes / sizeof(uint32_t), true); 309 310 for (i = 0; i < alloc_size_bytes / sizeof(uint32_t); i++) 311 pr_debug("0x%2X ", rl_buffer[i]); 312 pr_debug("\n"); 313 314 return 0; 315} 316 317int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm) 318{ 319 BUG_ON(!dqm); 320 321 pm->dqm = dqm; 322 mutex_init(&pm->lock); 323 pm->priv_queue = kernel_queue_init(dqm->dev, KFD_QUEUE_TYPE_HIQ); 324 if (pm->priv_queue == NULL) { 325 mutex_destroy(&pm->lock); 326 return -ENOMEM; 327 } 328 pm->allocated = false; 329 330 return 0; 331} 332 333void pm_uninit(struct packet_manager *pm) 334{ 335 BUG_ON(!pm); 336 337 mutex_destroy(&pm->lock); 338 kernel_queue_uninit(pm->priv_queue); 339} 340 341int pm_send_set_resources(struct packet_manager *pm, 342 struct scheduling_resources *res) 343{ 344 struct pm4_set_resources *packet; 345 346 BUG_ON(!pm || !res); 347 348 pr_debug("kfd: In func %s\n", __func__); 349 350 mutex_lock(&pm->lock); 351 pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue, 352 sizeof(*packet) / sizeof(uint32_t), 353 (unsigned int **)&packet); 354 if (packet == NULL) { 355 mutex_unlock(&pm->lock); 356 pr_err("kfd: failed to allocate buffer on kernel queue\n"); 357 return -ENOMEM; 358 } 359 360 memset(packet, 0, sizeof(struct pm4_set_resources)); 361 packet->header.u32all = build_pm4_header(IT_SET_RESOURCES, 362 sizeof(struct pm4_set_resources)); 363 364 packet->bitfields2.queue_type = 365 queue_type__mes_set_resources__hsa_interface_queue_hiq; 366 packet->bitfields2.vmid_mask = res->vmid_mask; 367 packet->bitfields2.unmap_latency = KFD_UNMAP_LATENCY; 368 packet->bitfields7.oac_mask = res->oac_mask; 369 packet->bitfields8.gds_heap_base = res->gds_heap_base; 370 packet->bitfields8.gds_heap_size = res->gds_heap_size; 371 372 packet->gws_mask_lo = lower_32_bits(res->gws_mask); 373 packet->gws_mask_hi = upper_32_bits(res->gws_mask); 374 375 packet->queue_mask_lo = lower_32_bits(res->queue_mask); 376 packet->queue_mask_hi = upper_32_bits(res->queue_mask); 377 378 pm->priv_queue->ops.submit_packet(pm->priv_queue); 379 380 mutex_unlock(&pm->lock); 381 382 return 0; 383} 384 385int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues) 386{ 387 uint64_t rl_gpu_ib_addr; 388 uint32_t *rl_buffer; 389 size_t rl_ib_size, packet_size_dwords; 390 int retval; 391 392 BUG_ON(!pm || !dqm_queues); 393 394 retval = pm_create_runlist_ib(pm, dqm_queues, &rl_gpu_ib_addr, 395 &rl_ib_size); 396 if (retval != 0) 397 goto fail_create_runlist_ib; 398 399 pr_debug("kfd: runlist IB address: 0x%llX\n", rl_gpu_ib_addr); 400 401 packet_size_dwords = sizeof(struct pm4_runlist) / sizeof(uint32_t); 402 mutex_lock(&pm->lock); 403 404 retval = pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue, 405 packet_size_dwords, &rl_buffer); 406 if (retval != 0) 407 goto fail_acquire_packet_buffer; 408 409 retval = pm_create_runlist(pm, rl_buffer, rl_gpu_ib_addr, 410 rl_ib_size / sizeof(uint32_t), false); 411 if (retval != 0) 412 goto fail_create_runlist; 413 414 pm->priv_queue->ops.submit_packet(pm->priv_queue); 415 416 mutex_unlock(&pm->lock); 417 418 return retval; 419 420fail_create_runlist: 421 pm->priv_queue->ops.rollback_packet(pm->priv_queue); 422fail_acquire_packet_buffer: 423 mutex_unlock(&pm->lock); 424fail_create_runlist_ib: 425 if (pm->allocated == true) 426 pm_release_ib(pm); 427 return retval; 428} 429 430int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address, 431 uint32_t fence_value) 432{ 433 int retval; 434 struct pm4_query_status *packet; 435 436 BUG_ON(!pm || !fence_address); 437 438 mutex_lock(&pm->lock); 439 retval = pm->priv_queue->ops.acquire_packet_buffer( 440 pm->priv_queue, 441 sizeof(struct pm4_query_status) / sizeof(uint32_t), 442 (unsigned int **)&packet); 443 if (retval != 0) 444 goto fail_acquire_packet_buffer; 445 446 packet->header.u32all = build_pm4_header(IT_QUERY_STATUS, 447 sizeof(struct pm4_query_status)); 448 449 packet->bitfields2.context_id = 0; 450 packet->bitfields2.interrupt_sel = 451 interrupt_sel__mes_query_status__completion_status; 452 packet->bitfields2.command = 453 command__mes_query_status__fence_only_after_write_ack; 454 455 packet->addr_hi = upper_32_bits((uint64_t)fence_address); 456 packet->addr_lo = lower_32_bits((uint64_t)fence_address); 457 packet->data_hi = upper_32_bits((uint64_t)fence_value); 458 packet->data_lo = lower_32_bits((uint64_t)fence_value); 459 460 pm->priv_queue->ops.submit_packet(pm->priv_queue); 461 mutex_unlock(&pm->lock); 462 463 return 0; 464 465fail_acquire_packet_buffer: 466 mutex_unlock(&pm->lock); 467 return retval; 468} 469 470int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type, 471 enum kfd_preempt_type_filter mode, 472 uint32_t filter_param, bool reset, 473 unsigned int sdma_engine) 474{ 475 int retval; 476 uint32_t *buffer; 477 struct pm4_unmap_queues *packet; 478 479 BUG_ON(!pm); 480 481 mutex_lock(&pm->lock); 482 retval = pm->priv_queue->ops.acquire_packet_buffer( 483 pm->priv_queue, 484 sizeof(struct pm4_unmap_queues) / sizeof(uint32_t), 485 &buffer); 486 if (retval != 0) 487 goto err_acquire_packet_buffer; 488 489 packet = (struct pm4_unmap_queues *)buffer; 490 memset(buffer, 0, sizeof(struct pm4_unmap_queues)); 491 492 packet->header.u32all = build_pm4_header(IT_UNMAP_QUEUES, 493 sizeof(struct pm4_unmap_queues)); 494 switch (type) { 495 case KFD_QUEUE_TYPE_COMPUTE: 496 case KFD_QUEUE_TYPE_DIQ: 497 packet->bitfields2.engine_sel = 498 engine_sel__mes_unmap_queues__compute; 499 break; 500 case KFD_QUEUE_TYPE_SDMA: 501 packet->bitfields2.engine_sel = 502 engine_sel__mes_unmap_queues__sdma0 + sdma_engine; 503 break; 504 default: 505 BUG(); 506 break; 507 } 508 509 if (reset) 510 packet->bitfields2.action = 511 action__mes_unmap_queues__reset_queues; 512 else 513 packet->bitfields2.action = 514 action__mes_unmap_queues__preempt_queues; 515 516 switch (mode) { 517 case KFD_PREEMPT_TYPE_FILTER_SINGLE_QUEUE: 518 packet->bitfields2.queue_sel = 519 queue_sel__mes_unmap_queues__perform_request_on_specified_queues; 520 packet->bitfields2.num_queues = 1; 521 packet->bitfields3b.doorbell_offset0 = filter_param; 522 break; 523 case KFD_PREEMPT_TYPE_FILTER_BY_PASID: 524 packet->bitfields2.queue_sel = 525 queue_sel__mes_unmap_queues__perform_request_on_pasid_queues; 526 packet->bitfields3a.pasid = filter_param; 527 break; 528 case KFD_PREEMPT_TYPE_FILTER_ALL_QUEUES: 529 packet->bitfields2.queue_sel = 530 queue_sel__mes_unmap_queues__perform_request_on_all_active_queues; 531 break; 532 default: 533 BUG(); 534 break; 535 }; 536 537 pm->priv_queue->ops.submit_packet(pm->priv_queue); 538 539 mutex_unlock(&pm->lock); 540 return 0; 541 542err_acquire_packet_buffer: 543 mutex_unlock(&pm->lock); 544 return retval; 545} 546 547void pm_release_ib(struct packet_manager *pm) 548{ 549 BUG_ON(!pm); 550 551 mutex_lock(&pm->lock); 552 if (pm->allocated) { 553 kfd_gtt_sa_free(pm->dqm->dev, pm->ib_buffer_obj); 554 pm->allocated = false; 555 } 556 mutex_unlock(&pm->lock); 557} 558