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1// SPDX-License-Identifier: GPL-2.0 OR MIT2/*3 * Copyright 2014-2022 Advanced Micro Devices, Inc.4 *5 * Permission is hereby granted, free of charge, to any person obtaining a6 * copy of this software and associated documentation files (the "Software"),7 * to deal in the Software without restriction, including without limitation8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,9 * and/or sell copies of the Software, and to permit persons to whom the10 * Software is furnished to do so, subject to the following conditions:11 *12 * The above copyright notice and this permission notice shall be included in13 * all copies or substantial portions of the Software.14 *15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR21 * OTHER DEALINGS IN THE SOFTWARE.22 *23 */24 25#include <linux/slab.h>26#include <linux/mutex.h>27#include "kfd_device_queue_manager.h"28#include "kfd_kernel_queue.h"29#include "kfd_priv.h"30 31static inline void inc_wptr(unsigned int *wptr, unsigned int increment_bytes,32 unsigned int buffer_size_bytes)33{34 unsigned int temp = *wptr + increment_bytes / sizeof(uint32_t);35 36 WARN((temp * sizeof(uint32_t)) > buffer_size_bytes,37 "Runlist IB overflow");38 *wptr = temp;39}40 41static void pm_calc_rlib_size(struct packet_manager *pm,42 unsigned int *rlib_size,43 bool *over_subscription)44{45 unsigned int process_count, queue_count, compute_queue_count, gws_queue_count;46 unsigned int map_queue_size;47 unsigned int max_proc_per_quantum = 1;48 struct kfd_node *node = pm->dqm->dev;49 struct device *dev = node->adev->dev;50 51 process_count = pm->dqm->processes_count;52 queue_count = pm->dqm->active_queue_count;53 compute_queue_count = pm->dqm->active_cp_queue_count;54 gws_queue_count = pm->dqm->gws_queue_count;55 56 /* check if there is over subscription57 * Note: the arbitration between the number of VMIDs and58 * hws_max_conc_proc has been done in59 * kgd2kfd_device_init().60 */61 *over_subscription = false;62 63 if (node->max_proc_per_quantum > 1)64 max_proc_per_quantum = node->max_proc_per_quantum;65 66 if ((process_count > max_proc_per_quantum) ||67 compute_queue_count > get_cp_queues_num(pm->dqm) ||68 gws_queue_count > 1) {69 *over_subscription = true;70 dev_dbg(dev, "Over subscribed runlist\n");71 }72 73 map_queue_size = pm->pmf->map_queues_size;74 /* calculate run list ib allocation size */75 *rlib_size = process_count * pm->pmf->map_process_size +76 queue_count * map_queue_size;77 78 /*79 * Increase the allocation size in case we need a chained run list80 * when over subscription81 */82 if (*over_subscription)83 *rlib_size += pm->pmf->runlist_size;84 85 dev_dbg(dev, "runlist ib size %d\n", *rlib_size);86}87 88static int pm_allocate_runlist_ib(struct packet_manager *pm,89 unsigned int **rl_buffer,90 uint64_t *rl_gpu_buffer,91 unsigned int *rl_buffer_size,92 bool *is_over_subscription)93{94 struct kfd_node *node = pm->dqm->dev;95 struct device *dev = node->adev->dev;96 int retval;97 98 if (WARN_ON(pm->allocated))99 return -EINVAL;100 101 pm_calc_rlib_size(pm, rl_buffer_size, is_over_subscription);102 103 mutex_lock(&pm->lock);104 105 retval = kfd_gtt_sa_allocate(node, *rl_buffer_size, &pm->ib_buffer_obj);106 107 if (retval) {108 dev_err(dev, "Failed to allocate runlist IB\n");109 goto out;110 }111 112 *(void **)rl_buffer = pm->ib_buffer_obj->cpu_ptr;113 *rl_gpu_buffer = pm->ib_buffer_obj->gpu_addr;114 115 memset(*rl_buffer, 0, *rl_buffer_size);116 pm->allocated = true;117 118out:119 mutex_unlock(&pm->lock);120 return retval;121}122 123static int pm_create_runlist_ib(struct packet_manager *pm,124 struct list_head *queues,125 uint64_t *rl_gpu_addr,126 size_t *rl_size_bytes)127{128 unsigned int alloc_size_bytes;129 unsigned int *rl_buffer, rl_wptr, i;130 struct kfd_node *node = pm->dqm->dev;131 struct device *dev = node->adev->dev;132 int retval, processes_mapped;133 struct device_process_node *cur;134 struct qcm_process_device *qpd;135 struct queue *q;136 struct kernel_queue *kq;137 bool is_over_subscription;138 139 rl_wptr = retval = processes_mapped = 0;140 141 retval = pm_allocate_runlist_ib(pm, &rl_buffer, rl_gpu_addr,142 &alloc_size_bytes, &is_over_subscription);143 if (retval)144 return retval;145 146 *rl_size_bytes = alloc_size_bytes;147 pm->ib_size_bytes = alloc_size_bytes;148 149 dev_dbg(dev, "Building runlist ib process count: %d queues count %d\n",150 pm->dqm->processes_count, pm->dqm->active_queue_count);151 152 /* build the run list ib packet */153 list_for_each_entry(cur, queues, list) {154 qpd = cur->qpd;155 /* build map process packet */156 if (processes_mapped >= pm->dqm->processes_count) {157 dev_dbg(dev, "Not enough space left in runlist IB\n");158 pm_release_ib(pm);159 return -ENOMEM;160 }161 162 retval = pm->pmf->map_process(pm, &rl_buffer[rl_wptr], qpd);163 if (retval)164 return retval;165 166 processes_mapped++;167 inc_wptr(&rl_wptr, pm->pmf->map_process_size,168 alloc_size_bytes);169 170 list_for_each_entry(kq, &qpd->priv_queue_list, list) {171 if (!kq->queue->properties.is_active)172 continue;173 174 dev_dbg(dev,175 "static_queue, mapping kernel q %d, is debug status %d\n",176 kq->queue->queue, qpd->is_debug);177 178 retval = pm->pmf->map_queues(pm,179 &rl_buffer[rl_wptr],180 kq->queue,181 qpd->is_debug);182 if (retval)183 return retval;184 185 inc_wptr(&rl_wptr,186 pm->pmf->map_queues_size,187 alloc_size_bytes);188 }189 190 list_for_each_entry(q, &qpd->queues_list, list) {191 if (!q->properties.is_active)192 continue;193 194 dev_dbg(dev,195 "static_queue, mapping user queue %d, is debug status %d\n",196 q->queue, qpd->is_debug);197 198 retval = pm->pmf->map_queues(pm,199 &rl_buffer[rl_wptr],200 q,201 qpd->is_debug);202 203 if (retval)204 return retval;205 206 inc_wptr(&rl_wptr,207 pm->pmf->map_queues_size,208 alloc_size_bytes);209 }210 }211 212 dev_dbg(dev, "Finished map process and queues to runlist\n");213 214 if (is_over_subscription) {215 if (!pm->is_over_subscription)216 dev_warn(217 dev,218 "Runlist is getting oversubscribed. Expect reduced ROCm performance.\n");219 retval = pm->pmf->runlist(pm, &rl_buffer[rl_wptr],220 *rl_gpu_addr,221 alloc_size_bytes / sizeof(uint32_t),222 true);223 }224 pm->is_over_subscription = is_over_subscription;225 226 for (i = 0; i < alloc_size_bytes / sizeof(uint32_t); i++)227 pr_debug("0x%2X ", rl_buffer[i]);228 pr_debug("\n");229 230 return retval;231}232 233int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm)234{235 switch (dqm->dev->adev->asic_type) {236 case CHIP_KAVERI:237 case CHIP_HAWAII:238 /* PM4 packet structures on CIK are the same as on VI */239 case CHIP_CARRIZO:240 case CHIP_TONGA:241 case CHIP_FIJI:242 case CHIP_POLARIS10:243 case CHIP_POLARIS11:244 case CHIP_POLARIS12:245 case CHIP_VEGAM:246 pm->pmf = &kfd_vi_pm_funcs;247 break;248 default:249 if (KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 2) ||250 KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 3) ||251 KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 4))252 pm->pmf = &kfd_aldebaran_pm_funcs;253 else if (KFD_GC_VERSION(dqm->dev) >= IP_VERSION(9, 0, 1))254 pm->pmf = &kfd_v9_pm_funcs;255 else {256 WARN(1, "Unexpected ASIC family %u",257 dqm->dev->adev->asic_type);258 return -EINVAL;259 }260 }261 262 pm->dqm = dqm;263 mutex_init(&pm->lock);264 pm->priv_queue = kernel_queue_init(dqm->dev, KFD_QUEUE_TYPE_HIQ);265 if (!pm->priv_queue) {266 mutex_destroy(&pm->lock);267 return -ENOMEM;268 }269 pm->allocated = false;270 271 return 0;272}273 274void pm_uninit(struct packet_manager *pm)275{276 mutex_destroy(&pm->lock);277 kernel_queue_uninit(pm->priv_queue);278 pm->priv_queue = NULL;279}280 281int pm_send_set_resources(struct packet_manager *pm,282 struct scheduling_resources *res)283{284 struct kfd_node *node = pm->dqm->dev;285 struct device *dev = node->adev->dev;286 uint32_t *buffer, size;287 int retval = 0;288 289 size = pm->pmf->set_resources_size;290 mutex_lock(&pm->lock);291 kq_acquire_packet_buffer(pm->priv_queue,292 size / sizeof(uint32_t),293 (unsigned int **)&buffer);294 if (!buffer) {295 dev_err(dev, "Failed to allocate buffer on kernel queue\n");296 retval = -ENOMEM;297 goto out;298 }299 300 retval = pm->pmf->set_resources(pm, buffer, res);301 if (!retval)302 retval = kq_submit_packet(pm->priv_queue);303 else304 kq_rollback_packet(pm->priv_queue);305 306out:307 mutex_unlock(&pm->lock);308 309 return retval;310}311 312int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues)313{314 uint64_t rl_gpu_ib_addr;315 uint32_t *rl_buffer;316 size_t rl_ib_size, packet_size_dwords;317 int retval;318 319 retval = pm_create_runlist_ib(pm, dqm_queues, &rl_gpu_ib_addr,320 &rl_ib_size);321 if (retval)322 goto fail_create_runlist_ib;323 324 pr_debug("runlist IB address: 0x%llX\n", rl_gpu_ib_addr);325 326 packet_size_dwords = pm->pmf->runlist_size / sizeof(uint32_t);327 mutex_lock(&pm->lock);328 329 retval = kq_acquire_packet_buffer(pm->priv_queue,330 packet_size_dwords, &rl_buffer);331 if (retval)332 goto fail_acquire_packet_buffer;333 334 retval = pm->pmf->runlist(pm, rl_buffer, rl_gpu_ib_addr,335 rl_ib_size / sizeof(uint32_t), false);336 if (retval)337 goto fail_create_runlist;338 339 retval = kq_submit_packet(pm->priv_queue);340 341 mutex_unlock(&pm->lock);342 343 return retval;344 345fail_create_runlist:346 kq_rollback_packet(pm->priv_queue);347fail_acquire_packet_buffer:348 mutex_unlock(&pm->lock);349fail_create_runlist_ib:350 pm_release_ib(pm);351 return retval;352}353 354int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,355 uint64_t fence_value)356{357 struct kfd_node *node = pm->dqm->dev;358 struct device *dev = node->adev->dev;359 uint32_t *buffer, size;360 int retval = 0;361 362 if (WARN_ON(!fence_address))363 return -EFAULT;364 365 size = pm->pmf->query_status_size;366 mutex_lock(&pm->lock);367 kq_acquire_packet_buffer(pm->priv_queue,368 size / sizeof(uint32_t), (unsigned int **)&buffer);369 if (!buffer) {370 dev_err(dev, "Failed to allocate buffer on kernel queue\n");371 retval = -ENOMEM;372 goto out;373 }374 375 retval = pm->pmf->query_status(pm, buffer, fence_address, fence_value);376 if (!retval)377 retval = kq_submit_packet(pm->priv_queue);378 else379 kq_rollback_packet(pm->priv_queue);380 381out:382 mutex_unlock(&pm->lock);383 return retval;384}385 386int pm_update_grace_period(struct packet_manager *pm, uint32_t grace_period)387{388 struct kfd_node *node = pm->dqm->dev;389 struct device *dev = node->adev->dev;390 int retval = 0;391 uint32_t *buffer, size;392 393 size = pm->pmf->set_grace_period_size;394 395 mutex_lock(&pm->lock);396 397 if (size) {398 kq_acquire_packet_buffer(pm->priv_queue,399 size / sizeof(uint32_t),400 (unsigned int **)&buffer);401 402 if (!buffer) {403 dev_err(dev,404 "Failed to allocate buffer on kernel queue\n");405 retval = -ENOMEM;406 goto out;407 }408 409 retval = pm->pmf->set_grace_period(pm, buffer, grace_period);410 if (!retval)411 retval = kq_submit_packet(pm->priv_queue);412 else413 kq_rollback_packet(pm->priv_queue);414 }415 416out:417 mutex_unlock(&pm->lock);418 return retval;419}420 421int pm_send_unmap_queue(struct packet_manager *pm,422 enum kfd_unmap_queues_filter filter,423 uint32_t filter_param, bool reset)424{425 struct kfd_node *node = pm->dqm->dev;426 struct device *dev = node->adev->dev;427 uint32_t *buffer, size;428 int retval = 0;429 430 size = pm->pmf->unmap_queues_size;431 mutex_lock(&pm->lock);432 kq_acquire_packet_buffer(pm->priv_queue,433 size / sizeof(uint32_t), (unsigned int **)&buffer);434 if (!buffer) {435 dev_err(dev, "Failed to allocate buffer on kernel queue\n");436 retval = -ENOMEM;437 goto out;438 }439 440 retval = pm->pmf->unmap_queues(pm, buffer, filter, filter_param, reset);441 if (!retval)442 retval = kq_submit_packet(pm->priv_queue);443 else444 kq_rollback_packet(pm->priv_queue);445 446out:447 mutex_unlock(&pm->lock);448 return retval;449}450 451void pm_release_ib(struct packet_manager *pm)452{453 mutex_lock(&pm->lock);454 if (pm->allocated) {455 kfd_gtt_sa_free(pm->dqm->dev, pm->ib_buffer_obj);456 pm->allocated = false;457 }458 mutex_unlock(&pm->lock);459}460 461#if defined(CONFIG_DEBUG_FS)462 463int pm_debugfs_runlist(struct seq_file *m, void *data)464{465 struct packet_manager *pm = data;466 467 mutex_lock(&pm->lock);468 469 if (!pm->allocated) {470 seq_puts(m, " No active runlist\n");471 goto out;472 }473 474 seq_hex_dump(m, " ", DUMP_PREFIX_OFFSET, 32, 4,475 pm->ib_buffer_obj->cpu_ptr, pm->ib_size_bytes, false);476 477out:478 mutex_unlock(&pm->lock);479 return 0;480}481 482int pm_debugfs_hang_hws(struct packet_manager *pm)483{484 struct kfd_node *node = pm->dqm->dev;485 struct device *dev = node->adev->dev;486 uint32_t *buffer, size;487 int r = 0;488 489 if (!pm->priv_queue)490 return -EAGAIN;491 492 size = pm->pmf->query_status_size;493 mutex_lock(&pm->lock);494 kq_acquire_packet_buffer(pm->priv_queue,495 size / sizeof(uint32_t), (unsigned int **)&buffer);496 if (!buffer) {497 dev_err(dev, "Failed to allocate buffer on kernel queue\n");498 r = -ENOMEM;499 goto out;500 }501 memset(buffer, 0x55, size);502 kq_submit_packet(pm->priv_queue);503 504 dev_info(dev, "Submitting %x %x %x %x %x %x %x to HIQ to hang the HWS.",505 buffer[0], buffer[1], buffer[2], buffer[3], buffer[4],506 buffer[5], buffer[6]);507out:508 mutex_unlock(&pm->lock);509 return r;510}511 512 513#endif514