drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c

   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/ratelimit.h>
  25 #include <linux/printk.h>
  26 #include <linux/slab.h>
  27 #include <linux/list.h>
  28 #include <linux/types.h>
  29 #include <linux/bitops.h>
  30 #include <linux/sched.h>
  31 #include "kfd_priv.h"
  32 #include "kfd_device_queue_manager.h"
  33 #include "kfd_mqd_manager.h"
  34 #include "cik_regs.h"
  35 #include "kfd_kernel_queue.h"
  36 #include "amdgpu_amdkfd.h"
  37
  38 /* Size of the per-pipe EOP queue */
  39 #define CIK_HPD_EOP_BYTES_LOG2 11
  40 #define CIK_HPD_EOP_BYTES (1U << CIK_HPD_EOP_BYTES_LOG2)
  41
  42 static int set_pasid_vmid_mapping(struct device_queue_manager *dqm,
  43                                         unsigned int pasid, unsigned int vmid);
  44
  45 static int execute_queues_cpsch(struct device_queue_manager *dqm,
  46                                 enum kfd_unmap_queues_filter filter,
  47                                 uint32_t filter_param);
  48 static int unmap_queues_cpsch(struct device_queue_manager *dqm,
  49                                 enum kfd_unmap_queues_filter filter,
  50                                 uint32_t filter_param);
  51
  52 static int map_queues_cpsch(struct device_queue_manager *dqm);
  53
  54 static void deallocate_sdma_queue(struct device_queue_manager *dqm,
  55                                 struct queue *q);
  56
  57 static inline void deallocate_hqd(struct device_queue_manager *dqm,
  58                                 struct queue *q);
  59 static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q);
  60 static int allocate_sdma_queue(struct device_queue_manager *dqm,
  61                                 struct queue *q);
  62 static void kfd_process_hw_exception(struct work_struct *work);
  63
  64 static inline
  65 enum KFD_MQD_TYPE get_mqd_type_from_queue_type(enum kfd_queue_type type)
  66 {
  67         if (type == KFD_QUEUE_TYPE_SDMA || type == KFD_QUEUE_TYPE_SDMA_XGMI)
  68                 return KFD_MQD_TYPE_SDMA;
  69         return KFD_MQD_TYPE_CP;
  70 }
  71
  72 static bool is_pipe_enabled(struct device_queue_manager *dqm, int mec, int pipe)
  73 {
  74         int i;
  75         int pipe_offset = mec * dqm->dev->shared_resources.num_pipe_per_mec
  76                 + pipe * dqm->dev->shared_resources.num_queue_per_pipe;
  77
  78         /* queue is available for KFD usage if bit is 1 */
  79         for (i = 0; i <  dqm->dev->shared_resources.num_queue_per_pipe; ++i)
  80                 if (test_bit(pipe_offset + i,
  81                               dqm->dev->shared_resources.queue_bitmap))
  82                         return true;
  83         return false;
  84 }
  85
  86 unsigned int get_queues_num(struct device_queue_manager *dqm)
  87 {
  88         return bitmap_weight(dqm->dev->shared_resources.queue_bitmap,
  89                                 KGD_MAX_QUEUES);
  90 }
  91
  92 unsigned int get_queues_per_pipe(struct device_queue_manager *dqm)
  93 {
  94         return dqm->dev->shared_resources.num_queue_per_pipe;
  95 }
  96
  97 unsigned int get_pipes_per_mec(struct device_queue_manager *dqm)
  98 {
  99         return dqm->dev->shared_resources.num_pipe_per_mec;
 100 }
 101
 102 static unsigned int get_num_sdma_engines(struct device_queue_manager *dqm)
 103 {
 104         return dqm->dev->device_info->num_sdma_engines;
 105 }
 106
 107 static unsigned int get_num_xgmi_sdma_engines(struct device_queue_manager *dqm)
 108 {
 109         return dqm->dev->device_info->num_xgmi_sdma_engines;
 110 }
 111
 112 unsigned int get_num_sdma_queues(struct device_queue_manager *dqm)
 113 {
 114         return dqm->dev->device_info->num_sdma_engines
 115                         * dqm->dev->device_info->num_sdma_queues_per_engine;
 116 }
 117
 118 unsigned int get_num_xgmi_sdma_queues(struct device_queue_manager *dqm)
 119 {
 120         return dqm->dev->device_info->num_xgmi_sdma_engines
 121                         * dqm->dev->device_info->num_sdma_queues_per_engine;
 122 }
 123
 124 void program_sh_mem_settings(struct device_queue_manager *dqm,
 125                                         struct qcm_process_device *qpd)
 126 {
 127         return dqm->dev->kfd2kgd->program_sh_mem_settings(
 128                                                 dqm->dev->kgd, qpd->vmid,
 129                                                 qpd->sh_mem_config,
 130                                                 qpd->sh_mem_ape1_base,
 131                                                 qpd->sh_mem_ape1_limit,
 132                                                 qpd->sh_mem_bases);
 133 }
 134
 135 static int allocate_doorbell(struct qcm_process_device *qpd, struct queue *q)
 136 {
 137         struct kfd_dev *dev = qpd->dqm->dev;
 138
 139         if (!KFD_IS_SOC15(dev->device_info->asic_family)) {
 140                 /* On pre-SOC15 chips we need to use the queue ID to
 141                  * preserve the user mode ABI.
 142                  */
 143                 q->doorbell_id = q->properties.queue_id;
 144         } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 145                         q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
 146                 /* For SDMA queues on SOC15 with 8-byte doorbell, use static
 147                  * doorbell assignments based on the engine and queue id.
 148                  * The doobell index distance between RLC (2*i) and (2*i+1)
 149                  * for a SDMA engine is 512.
 150                  */
 151                 uint32_t *idx_offset =
 152                                 dev->shared_resources.sdma_doorbell_idx;
 153
 154                 q->doorbell_id = idx_offset[q->properties.sdma_engine_id]
 155                         + (q->properties.sdma_queue_id & 1)
 156                         * KFD_QUEUE_DOORBELL_MIRROR_OFFSET
 157                         + (q->properties.sdma_queue_id >> 1);
 158         } else {
 159                 /* For CP queues on SOC15 reserve a free doorbell ID */
 160                 unsigned int found;
 161
 162                 found = find_first_zero_bit(qpd->doorbell_bitmap,
 163                                             KFD_MAX_NUM_OF_QUEUES_PER_PROCESS);
 164                 if (found >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) {
 165                         pr_debug("No doorbells available");
 166                         return -EBUSY;
 167                 }
 168                 set_bit(found, qpd->doorbell_bitmap);
 169                 q->doorbell_id = found;
 170         }
 171
 172         q->properties.doorbell_off =
 173                 kfd_get_doorbell_dw_offset_in_bar(dev, q->process,
 174                                           q->doorbell_id);
 175
 176         return 0;
 177 }
 178
 179 static void deallocate_doorbell(struct qcm_process_device *qpd,
 180                                 struct queue *q)
 181 {
 182         unsigned int old;
 183         struct kfd_dev *dev = qpd->dqm->dev;
 184
 185         if (!KFD_IS_SOC15(dev->device_info->asic_family) ||
 186             q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 187             q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
 188                 return;
 189
 190         old = test_and_clear_bit(q->doorbell_id, qpd->doorbell_bitmap);
 191         WARN_ON(!old);
 192 }
 193
 194 static int allocate_vmid(struct device_queue_manager *dqm,
 195                         struct qcm_process_device *qpd,
 196                         struct queue *q)
 197 {
 198         int allocated_vmid = -1, i;
 199
 200         for (i = dqm->dev->vm_info.first_vmid_kfd;
 201                         i <= dqm->dev->vm_info.last_vmid_kfd; i++) {
 202                 if (!dqm->vmid_pasid[i]) {
 203                         allocated_vmid = i;
 204                         break;
 205                 }
 206         }
 207
 208         if (allocated_vmid < 0) {
 209                 pr_err("no more vmid to allocate\n");
 210                 return -ENOSPC;
 211         }
 212
 213         pr_debug("vmid allocated: %d\n", allocated_vmid);
 214
 215         dqm->vmid_pasid[allocated_vmid] = q->process->pasid;
 216
 217         set_pasid_vmid_mapping(dqm, q->process->pasid, allocated_vmid);
 218
 219         qpd->vmid = allocated_vmid;
 220         q->properties.vmid = allocated_vmid;
 221
 222         program_sh_mem_settings(dqm, qpd);
 223
 224         /* qpd->page_table_base is set earlier when register_process()
 225          * is called, i.e. when the first queue is created.
 226          */
 227         dqm->dev->kfd2kgd->set_vm_context_page_table_base(dqm->dev->kgd,
 228                         qpd->vmid,
 229                         qpd->page_table_base);
 230         /* invalidate the VM context after pasid and vmid mapping is set up */
 231         kfd_flush_tlb(qpd_to_pdd(qpd));
 232
 233         if (dqm->dev->kfd2kgd->set_scratch_backing_va)
 234                 dqm->dev->kfd2kgd->set_scratch_backing_va(dqm->dev->kgd,
 235                                 qpd->sh_hidden_private_base, qpd->vmid);
 236
 237         return 0;
 238 }
 239
 240 static int flush_texture_cache_nocpsch(struct kfd_dev *kdev,
 241                                 struct qcm_process_device *qpd)
 242 {
 243         const struct packet_manager_funcs *pmf = qpd->dqm->packets.pmf;
 244         int ret;
 245
 246         if (!qpd->ib_kaddr)
 247                 return -ENOMEM;
 248
 249         ret = pmf->release_mem(qpd->ib_base, (uint32_t *)qpd->ib_kaddr);
 250         if (ret)
 251                 return ret;
 252
 253         return amdgpu_amdkfd_submit_ib(kdev->kgd, KGD_ENGINE_MEC1, qpd->vmid,
 254                                 qpd->ib_base, (uint32_t *)qpd->ib_kaddr,
 255                                 pmf->release_mem_size / sizeof(uint32_t));
 256 }
 257
 258 static void deallocate_vmid(struct device_queue_manager *dqm,
 259                                 struct qcm_process_device *qpd,
 260                                 struct queue *q)
 261 {
 262         /* On GFX v7, CP doesn't flush TC at dequeue */
 263         if (q->device->device_info->asic_family == CHIP_HAWAII)
 264                 if (flush_texture_cache_nocpsch(q->device, qpd))
 265                         pr_err("Failed to flush TC\n");
 266
 267         kfd_flush_tlb(qpd_to_pdd(qpd));
 268
 269         /* Release the vmid mapping */
 270         set_pasid_vmid_mapping(dqm, 0, qpd->vmid);
 271         dqm->vmid_pasid[qpd->vmid] = 0;
 272
 273         qpd->vmid = 0;
 274         q->properties.vmid = 0;
 275 }
 276
 277 static int create_queue_nocpsch(struct device_queue_manager *dqm,
 278                                 struct queue *q,
 279                                 struct qcm_process_device *qpd)
 280 {
 281         struct mqd_manager *mqd_mgr;
 282         int retval;
 283
 284         print_queue(q);
 285
 286         dqm_lock(dqm);
 287
 288         if (dqm->total_queue_count >= max_num_of_queues_per_device) {
 289                 pr_warn("Can't create new usermode queue because %d queues were already created\n",
 290                                 dqm->total_queue_count);
 291                 retval = -EPERM;
 292                 goto out_unlock;
 293         }
 294
 295         if (list_empty(&qpd->queues_list)) {
 296                 retval = allocate_vmid(dqm, qpd, q);
 297                 if (retval)
 298                         goto out_unlock;
 299         }
 300         q->properties.vmid = qpd->vmid;
 301         /*
 302          * Eviction state logic: mark all queues as evicted, even ones
 303          * not currently active. Restoring inactive queues later only
 304          * updates the is_evicted flag but is a no-op otherwise.
 305          */
 306         q->properties.is_evicted = !!qpd->evicted;
 307
 308         q->properties.tba_addr = qpd->tba_addr;
 309         q->properties.tma_addr = qpd->tma_addr;
 310
 311         mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 312                         q->properties.type)];
 313         if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE) {
 314                 retval = allocate_hqd(dqm, q);
 315                 if (retval)
 316                         goto deallocate_vmid;
 317                 pr_debug("Loading mqd to hqd on pipe %d, queue %d\n",
 318                         q->pipe, q->queue);
 319         } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 320                 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
 321                 retval = allocate_sdma_queue(dqm, q);
 322                 if (retval)
 323                         goto deallocate_vmid;
 324                 dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
 325         }
 326
 327         retval = allocate_doorbell(qpd, q);
 328         if (retval)
 329                 goto out_deallocate_hqd;
 330
 331         /* Temporarily release dqm lock to avoid a circular lock dependency */
 332         dqm_unlock(dqm);
 333         q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
 334         dqm_lock(dqm);
 335
 336         if (!q->mqd_mem_obj) {
 337                 retval = -ENOMEM;
 338                 goto out_deallocate_doorbell;
 339         }
 340         mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
 341                                 &q->gart_mqd_addr, &q->properties);
 342         if (q->properties.is_active) {
 343                 if (!dqm->sched_running) {
 344                         WARN_ONCE(1, "Load non-HWS mqd while stopped\n");
 345                         goto add_queue_to_list;
 346                 }
 347
 348                 if (WARN(q->process->mm != current->mm,
 349                                         "should only run in user thread"))
 350                         retval = -EFAULT;
 351                 else
 352                         retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
 353                                         q->queue, &q->properties, current->mm);
 354                 if (retval)
 355                         goto out_free_mqd;
 356         }
 357
 358 add_queue_to_list:
 359         list_add(&q->list, &qpd->queues_list);
 360         qpd->queue_count++;
 361         if (q->properties.is_active)
 362                 dqm->queue_count++;
 363
 364         if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
 365                 dqm->sdma_queue_count++;
 366         else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
 367                 dqm->xgmi_sdma_queue_count++;
 368
 369         /*
 370          * Unconditionally increment this counter, regardless of the queue's
 371          * type or whether the queue is active.
 372          */
 373         dqm->total_queue_count++;
 374         pr_debug("Total of %d queues are accountable so far\n",
 375                         dqm->total_queue_count);
 376         goto out_unlock;
 377
 378 out_free_mqd:
 379         mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 380 out_deallocate_doorbell:
 381         deallocate_doorbell(qpd, q);
 382 out_deallocate_hqd:
 383         if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE)
 384                 deallocate_hqd(dqm, q);
 385         else if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 386                 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
 387                 deallocate_sdma_queue(dqm, q);
 388 deallocate_vmid:
 389         if (list_empty(&qpd->queues_list))
 390                 deallocate_vmid(dqm, qpd, q);
 391 out_unlock:
 392         dqm_unlock(dqm);
 393         return retval;
 394 }
 395
 396 static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q)
 397 {
 398         bool set;
 399         int pipe, bit, i;
 400
 401         set = false;
 402
 403         for (pipe = dqm->next_pipe_to_allocate, i = 0;
 404                         i < get_pipes_per_mec(dqm);
 405                         pipe = ((pipe + 1) % get_pipes_per_mec(dqm)), ++i) {
 406
 407                 if (!is_pipe_enabled(dqm, 0, pipe))
 408                         continue;
 409
 410                 if (dqm->allocated_queues[pipe] != 0) {
 411                         bit = ffs(dqm->allocated_queues[pipe]) - 1;
 412                         dqm->allocated_queues[pipe] &= ~(1 << bit);
 413                         q->pipe = pipe;
 414                         q->queue = bit;
 415                         set = true;
 416                         break;
 417                 }
 418         }
 419
 420         if (!set)
 421                 return -EBUSY;
 422
 423         pr_debug("hqd slot - pipe %d, queue %d\n", q->pipe, q->queue);
 424         /* horizontal hqd allocation */
 425         dqm->next_pipe_to_allocate = (pipe + 1) % get_pipes_per_mec(dqm);
 426
 427         return 0;
 428 }
 429
 430 static inline void deallocate_hqd(struct device_queue_manager *dqm,
 431                                 struct queue *q)
 432 {
 433         dqm->allocated_queues[q->pipe] |= (1 << q->queue);
 434 }
 435
 436 /* Access to DQM has to be locked before calling destroy_queue_nocpsch_locked
 437  * to avoid asynchronized access
 438  */
 439 static int destroy_queue_nocpsch_locked(struct device_queue_manager *dqm,
 440                                 struct qcm_process_device *qpd,
 441                                 struct queue *q)
 442 {
 443         int retval;
 444         struct mqd_manager *mqd_mgr;
 445
 446         mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 447                         q->properties.type)];
 448
 449         if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE) {
 450                 deallocate_hqd(dqm, q);
 451         } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
 452                 dqm->sdma_queue_count--;
 453                 deallocate_sdma_queue(dqm, q);
 454         } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
 455                 dqm->xgmi_sdma_queue_count--;
 456                 deallocate_sdma_queue(dqm, q);
 457         } else {
 458                 pr_debug("q->properties.type %d is invalid\n",
 459                                 q->properties.type);
 460                 return -EINVAL;
 461         }
 462         dqm->total_queue_count--;
 463
 464         deallocate_doorbell(qpd, q);
 465
 466         if (!dqm->sched_running) {
 467                 WARN_ONCE(1, "Destroy non-HWS queue while stopped\n");
 468                 return 0;
 469         }
 470
 471         retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd,
 472                                 KFD_PREEMPT_TYPE_WAVEFRONT_RESET,
 473                                 KFD_UNMAP_LATENCY_MS,
 474                                 q->pipe, q->queue);
 475         if (retval == -ETIME)
 476                 qpd->reset_wavefronts = true;
 477
 478         mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 479
 480         list_del(&q->list);
 481         if (list_empty(&qpd->queues_list)) {
 482                 if (qpd->reset_wavefronts) {
 483                         pr_warn("Resetting wave fronts (nocpsch) on dev %p\n",
 484                                         dqm->dev);
 485                         /* dbgdev_wave_reset_wavefronts has to be called before
 486                          * deallocate_vmid(), i.e. when vmid is still in use.
 487                          */
 488                         dbgdev_wave_reset_wavefronts(dqm->dev,
 489                                         qpd->pqm->process);
 490                         qpd->reset_wavefronts = false;
 491                 }
 492
 493                 deallocate_vmid(dqm, qpd, q);
 494         }
 495         qpd->queue_count--;
 496         if (q->properties.is_active)
 497                 dqm->queue_count--;
 498
 499         return retval;
 500 }
 501
 502 static int destroy_queue_nocpsch(struct device_queue_manager *dqm,
 503                                 struct qcm_process_device *qpd,
 504                                 struct queue *q)
 505 {
 506         int retval;
 507
 508         dqm_lock(dqm);
 509         retval = destroy_queue_nocpsch_locked(dqm, qpd, q);
 510         dqm_unlock(dqm);
 511
 512         return retval;
 513 }
 514
 515 static int update_queue(struct device_queue_manager *dqm, struct queue *q)
 516 {
 517         int retval = 0;
 518         struct mqd_manager *mqd_mgr;
 519         struct kfd_process_device *pdd;
 520         bool prev_active = false;
 521
 522         dqm_lock(dqm);
 523         pdd = kfd_get_process_device_data(q->device, q->process);
 524         if (!pdd) {
 525                 retval = -ENODEV;
 526                 goto out_unlock;
 527         }
 528         mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 529                         q->properties.type)];
 530
 531         /* Save previous activity state for counters */
 532         prev_active = q->properties.is_active;
 533
 534         /* Make sure the queue is unmapped before updating the MQD */
 535         if (dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) {
 536                 retval = unmap_queues_cpsch(dqm,
 537                                 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
 538                 if (retval) {
 539                         pr_err("unmap queue failed\n");
 540                         goto out_unlock;
 541                 }
 542         } else if (prev_active &&
 543                    (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
 544                     q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 545                     q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
 546
 547                 if (!dqm->sched_running) {
 548                         WARN_ONCE(1, "Update non-HWS queue while stopped\n");
 549                         goto out_unlock;
 550                 }
 551
 552                 retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd,
 553                                 KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN,
 554                                 KFD_UNMAP_LATENCY_MS, q->pipe, q->queue);
 555                 if (retval) {
 556                         pr_err("destroy mqd failed\n");
 557                         goto out_unlock;
 558                 }
 559         }
 560
 561         mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties);
 562
 563         /*
 564          * check active state vs. the previous state and modify
 565          * counter accordingly. map_queues_cpsch uses the
 566          * dqm->queue_count to determine whether a new runlist must be
 567          * uploaded.
 568          */
 569         if (q->properties.is_active && !prev_active)
 570                 dqm->queue_count++;
 571         else if (!q->properties.is_active && prev_active)
 572                 dqm->queue_count--;
 573
 574         if (dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS)
 575                 retval = map_queues_cpsch(dqm);
 576         else if (q->properties.is_active &&
 577                  (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
 578                   q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 579                   q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
 580                 if (WARN(q->process->mm != current->mm,
 581                          "should only run in user thread"))
 582                         retval = -EFAULT;
 583                 else
 584                         retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd,
 585                                                    q->pipe, q->queue,
 586                                                    &q->properties, current->mm);
 587         }
 588
 589 out_unlock:
 590         dqm_unlock(dqm);
 591         return retval;
 592 }
 593
 594 static int evict_process_queues_nocpsch(struct device_queue_manager *dqm,
 595                                         struct qcm_process_device *qpd)
 596 {
 597         struct queue *q;
 598         struct mqd_manager *mqd_mgr;
 599         struct kfd_process_device *pdd;
 600         int retval, ret = 0;
 601
 602         dqm_lock(dqm);
 603         if (qpd->evicted++ > 0) /* already evicted, do nothing */
 604                 goto out;
 605
 606         pdd = qpd_to_pdd(qpd);
 607         pr_info_ratelimited("Evicting PASID 0x%x queues\n",
 608                             pdd->process->pasid);
 609
 610         /* Mark all queues as evicted. Deactivate all active queues on
 611          * the qpd.
 612          */
 613         list_for_each_entry(q, &qpd->queues_list, list) {
 614                 q->properties.is_evicted = true;
 615                 if (!q->properties.is_active)
 616                         continue;
 617
 618                 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 619                                 q->properties.type)];
 620                 q->properties.is_active = false;
 621                 dqm->queue_count--;
 622
 623                 if (WARN_ONCE(!dqm->sched_running, "Evict when stopped\n"))
 624                         continue;
 625
 626                 retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd,
 627                                 KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN,
 628                                 KFD_UNMAP_LATENCY_MS, q->pipe, q->queue);
 629                 if (retval && !ret)
 630                         /* Return the first error, but keep going to
 631                          * maintain a consistent eviction state
 632                          */
 633                         ret = retval;
 634         }
 635
 636 out:
 637         dqm_unlock(dqm);
 638         return ret;
 639 }
 640
 641 static int evict_process_queues_cpsch(struct device_queue_manager *dqm,
 642                                       struct qcm_process_device *qpd)
 643 {
 644         struct queue *q;
 645         struct kfd_process_device *pdd;
 646         int retval = 0;
 647
 648         dqm_lock(dqm);
 649         if (qpd->evicted++ > 0) /* already evicted, do nothing */
 650                 goto out;
 651
 652         pdd = qpd_to_pdd(qpd);
 653         pr_info_ratelimited("Evicting PASID 0x%x queues\n",
 654                             pdd->process->pasid);
 655
 656         /* Mark all queues as evicted. Deactivate all active queues on
 657          * the qpd.
 658          */
 659         list_for_each_entry(q, &qpd->queues_list, list) {
 660                 q->properties.is_evicted = true;
 661                 if (!q->properties.is_active)
 662                         continue;
 663
 664                 q->properties.is_active = false;
 665                 dqm->queue_count--;
 666         }
 667         retval = execute_queues_cpsch(dqm,
 668                                 qpd->is_debug ?
 669                                 KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES :
 670                                 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
 671
 672 out:
 673         dqm_unlock(dqm);
 674         return retval;
 675 }
 676
 677 static int restore_process_queues_nocpsch(struct device_queue_manager *dqm,
 678                                           struct qcm_process_device *qpd)
 679 {
 680         struct mm_struct *mm = NULL;
 681         struct queue *q;
 682         struct mqd_manager *mqd_mgr;
 683         struct kfd_process_device *pdd;
 684         uint64_t pd_base;
 685         int retval, ret = 0;
 686
 687         pdd = qpd_to_pdd(qpd);
 688         /* Retrieve PD base */
 689         pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->vm);
 690
 691         dqm_lock(dqm);
 692         if (WARN_ON_ONCE(!qpd->evicted)) /* already restored, do nothing */
 693                 goto out;
 694         if (qpd->evicted > 1) { /* ref count still > 0, decrement & quit */
 695                 qpd->evicted--;
 696                 goto out;
 697         }
 698
 699         pr_info_ratelimited("Restoring PASID 0x%x queues\n",
 700                             pdd->process->pasid);
 701
 702         /* Update PD Base in QPD */
 703         qpd->page_table_base = pd_base;
 704         pr_debug("Updated PD address to 0x%llx\n", pd_base);
 705
 706         if (!list_empty(&qpd->queues_list)) {
 707                 dqm->dev->kfd2kgd->set_vm_context_page_table_base(
 708                                 dqm->dev->kgd,
 709                                 qpd->vmid,
 710                                 qpd->page_table_base);
 711                 kfd_flush_tlb(pdd);
 712         }
 713
 714         /* Take a safe reference to the mm_struct, which may otherwise
 715          * disappear even while the kfd_process is still referenced.
 716          */
 717         mm = get_task_mm(pdd->process->lead_thread);
 718         if (!mm) {
 719                 ret = -EFAULT;
 720                 goto out;
 721         }
 722
 723         /* Remove the eviction flags. Activate queues that are not
 724          * inactive for other reasons.
 725          */
 726         list_for_each_entry(q, &qpd->queues_list, list) {
 727                 q->properties.is_evicted = false;
 728                 if (!QUEUE_IS_ACTIVE(q->properties))
 729                         continue;
 730
 731                 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 732                                 q->properties.type)];
 733                 q->properties.is_active = true;
 734                 dqm->queue_count++;
 735
 736                 if (WARN_ONCE(!dqm->sched_running, "Restore when stopped\n"))
 737                         continue;
 738
 739                 retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
 740                                        q->queue, &q->properties, mm);
 741                 if (retval && !ret)
 742                         /* Return the first error, but keep going to
 743                          * maintain a consistent eviction state
 744                          */
 745                         ret = retval;
 746         }
 747         qpd->evicted = 0;
 748 out:
 749         if (mm)
 750                 mmput(mm);
 751         dqm_unlock(dqm);
 752         return ret;
 753 }
 754
 755 static int restore_process_queues_cpsch(struct device_queue_manager *dqm,
 756                                         struct qcm_process_device *qpd)
 757 {
 758         struct queue *q;
 759         struct kfd_process_device *pdd;
 760         uint64_t pd_base;
 761         int retval = 0;
 762
 763         pdd = qpd_to_pdd(qpd);
 764         /* Retrieve PD base */
 765         pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->vm);
 766
 767         dqm_lock(dqm);
 768         if (WARN_ON_ONCE(!qpd->evicted)) /* already restored, do nothing */
 769                 goto out;
 770         if (qpd->evicted > 1) { /* ref count still > 0, decrement & quit */
 771                 qpd->evicted--;
 772                 goto out;
 773         }
 774
 775         pr_info_ratelimited("Restoring PASID 0x%x queues\n",
 776                             pdd->process->pasid);
 777
 778         /* Update PD Base in QPD */
 779         qpd->page_table_base = pd_base;
 780         pr_debug("Updated PD address to 0x%llx\n", pd_base);
 781
 782         /* activate all active queues on the qpd */
 783         list_for_each_entry(q, &qpd->queues_list, list) {
 784                 q->properties.is_evicted = false;
 785                 if (!QUEUE_IS_ACTIVE(q->properties))
 786                         continue;
 787
 788                 q->properties.is_active = true;
 789                 dqm->queue_count++;
 790         }
 791         retval = execute_queues_cpsch(dqm,
 792                                 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
 793         qpd->evicted = 0;
 794 out:
 795         dqm_unlock(dqm);
 796         return retval;
 797 }
 798
 799 static int register_process(struct device_queue_manager *dqm,
 800                                         struct qcm_process_device *qpd)
 801 {
 802         struct device_process_node *n;
 803         struct kfd_process_device *pdd;
 804         uint64_t pd_base;
 805         int retval;
 806
 807         n = kzalloc(sizeof(*n), GFP_KERNEL);
 808         if (!n)
 809                 return -ENOMEM;
 810
 811         n->qpd = qpd;
 812
 813         pdd = qpd_to_pdd(qpd);
 814         /* Retrieve PD base */
 815         pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->vm);
 816
 817         dqm_lock(dqm);
 818         list_add(&n->list, &dqm->queues);
 819
 820         /* Update PD Base in QPD */
 821         qpd->page_table_base = pd_base;
 822         pr_debug("Updated PD address to 0x%llx\n", pd_base);
 823
 824         retval = dqm->asic_ops.update_qpd(dqm, qpd);
 825
 826         dqm->processes_count++;
 827
 828         dqm_unlock(dqm);
 829
 830         /* Outside the DQM lock because under the DQM lock we can't do
 831          * reclaim or take other locks that others hold while reclaiming.
 832          */
 833         kfd_inc_compute_active(dqm->dev);
 834
 835         return retval;
 836 }
 837
 838 static int unregister_process(struct device_queue_manager *dqm,
 839                                         struct qcm_process_device *qpd)
 840 {
 841         int retval;
 842         struct device_process_node *cur, *next;
 843
 844         pr_debug("qpd->queues_list is %s\n",
 845                         list_empty(&qpd->queues_list) ? "empty" : "not empty");
 846
 847         retval = 0;
 848         dqm_lock(dqm);
 849
 850         list_for_each_entry_safe(cur, next, &dqm->queues, list) {
 851                 if (qpd == cur->qpd) {
 852                         list_del(&cur->list);
 853                         kfree(cur);
 854                         dqm->processes_count--;
 855                         goto out;
 856                 }
 857         }
 858         /* qpd not found in dqm list */
 859         retval = 1;
 860 out:
 861         dqm_unlock(dqm);
 862
 863         /* Outside the DQM lock because under the DQM lock we can't do
 864          * reclaim or take other locks that others hold while reclaiming.
 865          */
 866         if (!retval)
 867                 kfd_dec_compute_active(dqm->dev);
 868
 869         return retval;
 870 }
 871
 872 static int
 873 set_pasid_vmid_mapping(struct device_queue_manager *dqm, unsigned int pasid,
 874                         unsigned int vmid)
 875 {
 876         return dqm->dev->kfd2kgd->set_pasid_vmid_mapping(
 877                                                 dqm->dev->kgd, pasid, vmid);
 878 }
 879
 880 static void init_interrupts(struct device_queue_manager *dqm)
 881 {
 882         unsigned int i;
 883
 884         for (i = 0 ; i < get_pipes_per_mec(dqm) ; i++)
 885                 if (is_pipe_enabled(dqm, 0, i))
 886                         dqm->dev->kfd2kgd->init_interrupts(dqm->dev->kgd, i);
 887 }
 888
 889 static int initialize_nocpsch(struct device_queue_manager *dqm)
 890 {
 891         int pipe, queue;
 892
 893         pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm));
 894
 895         dqm->allocated_queues = kcalloc(get_pipes_per_mec(dqm),
 896                                         sizeof(unsigned int), GFP_KERNEL);
 897         if (!dqm->allocated_queues)
 898                 return -ENOMEM;
 899
 900         mutex_init(&dqm->lock_hidden);
 901         INIT_LIST_HEAD(&dqm->queues);
 902         dqm->queue_count = dqm->next_pipe_to_allocate = 0;
 903         dqm->sdma_queue_count = 0;
 904         dqm->xgmi_sdma_queue_count = 0;
 905
 906         for (pipe = 0; pipe < get_pipes_per_mec(dqm); pipe++) {
 907                 int pipe_offset = pipe * get_queues_per_pipe(dqm);
 908
 909                 for (queue = 0; queue < get_queues_per_pipe(dqm); queue++)
 910                         if (test_bit(pipe_offset + queue,
 911                                      dqm->dev->shared_resources.queue_bitmap))
 912                                 dqm->allocated_queues[pipe] |= 1 << queue;
 913         }
 914
 915         memset(dqm->vmid_pasid, 0, sizeof(dqm->vmid_pasid));
 916
 917         dqm->sdma_bitmap = ~0ULL >> (64 - get_num_sdma_queues(dqm));
 918         dqm->xgmi_sdma_bitmap = ~0ULL >> (64 - get_num_xgmi_sdma_queues(dqm));
 919
 920         return 0;
 921 }
 922
 923 static void uninitialize(struct device_queue_manager *dqm)
 924 {
 925         int i;
 926
 927         WARN_ON(dqm->queue_count > 0 || dqm->processes_count > 0);
 928
 929         kfree(dqm->allocated_queues);
 930         for (i = 0 ; i < KFD_MQD_TYPE_MAX ; i++)
 931                 kfree(dqm->mqd_mgrs[i]);
 932         mutex_destroy(&dqm->lock_hidden);
 933 }
 934
 935 static int start_nocpsch(struct device_queue_manager *dqm)
 936 {
 937         init_interrupts(dqm);
 938
 939         if (dqm->dev->device_info->asic_family == CHIP_HAWAII)
 940                 return pm_init(&dqm->packets, dqm);
 941         dqm->sched_running = true;
 942
 943         return 0;
 944 }
 945
 946 static int stop_nocpsch(struct device_queue_manager *dqm)
 947 {
 948         if (dqm->dev->device_info->asic_family == CHIP_HAWAII)
 949                 pm_uninit(&dqm->packets, false);
 950         dqm->sched_running = false;
 951
 952         return 0;
 953 }
 954
 955 static void pre_reset(struct device_queue_manager *dqm)
 956 {
 957         dqm_lock(dqm);
 958         dqm->is_resetting = true;
 959         dqm_unlock(dqm);
 960 }
 961
 962 static int allocate_sdma_queue(struct device_queue_manager *dqm,
 963                                 struct queue *q)
 964 {
 965         int bit;
 966
 967         if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
 968                 if (dqm->sdma_bitmap == 0)
 969                         return -ENOMEM;
 970                 bit = __ffs64(dqm->sdma_bitmap);
 971                 dqm->sdma_bitmap &= ~(1ULL << bit);
 972                 q->sdma_id = bit;
 973                 q->properties.sdma_engine_id = q->sdma_id %
 974                                 get_num_sdma_engines(dqm);
 975                 q->properties.sdma_queue_id = q->sdma_id /
 976                                 get_num_sdma_engines(dqm);
 977         } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
 978                 if (dqm->xgmi_sdma_bitmap == 0)
 979                         return -ENOMEM;
 980                 bit = __ffs64(dqm->xgmi_sdma_bitmap);
 981                 dqm->xgmi_sdma_bitmap &= ~(1ULL << bit);
 982                 q->sdma_id = bit;
 983                 /* sdma_engine_id is sdma id including
 984                  * both PCIe-optimized SDMAs and XGMI-
 985                  * optimized SDMAs. The calculation below
 986                  * assumes the first N engines are always
 987                  * PCIe-optimized ones
 988                  */
 989                 q->properties.sdma_engine_id = get_num_sdma_engines(dqm) +
 990                                 q->sdma_id % get_num_xgmi_sdma_engines(dqm);
 991                 q->properties.sdma_queue_id = q->sdma_id /
 992                                 get_num_xgmi_sdma_engines(dqm);
 993         }
 994
 995         pr_debug("SDMA engine id: %d\n", q->properties.sdma_engine_id);
 996         pr_debug("SDMA queue id: %d\n", q->properties.sdma_queue_id);
 997
 998         return 0;
 999 }
1000
1001 static void deallocate_sdma_queue(struct device_queue_manager *dqm,
1002                                 struct queue *q)
1003 {
1004         if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
1005                 if (q->sdma_id >= get_num_sdma_queues(dqm))
1006                         return;
1007                 dqm->sdma_bitmap |= (1ULL << q->sdma_id);
1008         } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1009                 if (q->sdma_id >= get_num_xgmi_sdma_queues(dqm))
1010                         return;
1011                 dqm->xgmi_sdma_bitmap |= (1ULL << q->sdma_id);
1012         }
1013 }
1014
1015 /*
1016  * Device Queue Manager implementation for cp scheduler
1017  */
1018
1019 static int set_sched_resources(struct device_queue_manager *dqm)
1020 {
1021         int i, mec;
1022         struct scheduling_resources res;
1023
1024         res.vmid_mask = dqm->dev->shared_resources.compute_vmid_bitmap;
1025
1026         res.queue_mask = 0;
1027         for (i = 0; i < KGD_MAX_QUEUES; ++i) {
1028                 mec = (i / dqm->dev->shared_resources.num_queue_per_pipe)
1029                         / dqm->dev->shared_resources.num_pipe_per_mec;
1030
1031                 if (!test_bit(i, dqm->dev->shared_resources.queue_bitmap))
1032                         continue;
1033
1034                 /* only acquire queues from the first MEC */
1035                 if (mec > 0)
1036                         continue;
1037
1038                 /* This situation may be hit in the future if a new HW
1039                  * generation exposes more than 64 queues. If so, the
1040                  * definition of res.queue_mask needs updating
1041                  */
1042                 if (WARN_ON(i >= (sizeof(res.queue_mask)*8))) {
1043                         pr_err("Invalid queue enabled by amdgpu: %d\n", i);
1044                         break;
1045                 }
1046
1047                 res.queue_mask |= (1ull << i);
1048         }
1049         res.gws_mask = ~0ull;
1050         res.oac_mask = res.gds_heap_base = res.gds_heap_size = 0;
1051
1052         pr_debug("Scheduling resources:\n"
1053                         "vmid mask: 0x%8X\n"
1054                         "queue mask: 0x%8llX\n",
1055                         res.vmid_mask, res.queue_mask);
1056
1057         return pm_send_set_resources(&dqm->packets, &res);
1058 }
1059
1060 static int initialize_cpsch(struct device_queue_manager *dqm)
1061 {
1062         pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm));
1063
1064         mutex_init(&dqm->lock_hidden);
1065         INIT_LIST_HEAD(&dqm->queues);
1066         dqm->queue_count = dqm->processes_count = 0;
1067         dqm->sdma_queue_count = 0;
1068         dqm->xgmi_sdma_queue_count = 0;
1069         dqm->active_runlist = false;
1070         dqm->sdma_bitmap = ~0ULL >> (64 - get_num_sdma_queues(dqm));
1071         dqm->xgmi_sdma_bitmap = ~0ULL >> (64 - get_num_xgmi_sdma_queues(dqm));
1072
1073         INIT_WORK(&dqm->hw_exception_work, kfd_process_hw_exception);
1074
1075         return 0;
1076 }
1077
1078 static int start_cpsch(struct device_queue_manager *dqm)
1079 {
1080         int retval;
1081
1082         retval = 0;
1083
1084         retval = pm_init(&dqm->packets, dqm);
1085         if (retval)
1086                 goto fail_packet_manager_init;
1087
1088         retval = set_sched_resources(dqm);
1089         if (retval)
1090                 goto fail_set_sched_resources;
1091
1092         pr_debug("Allocating fence memory\n");
1093
1094         /* allocate fence memory on the gart */
1095         retval = kfd_gtt_sa_allocate(dqm->dev, sizeof(*dqm->fence_addr),
1096                                         &dqm->fence_mem);
1097
1098         if (retval)
1099                 goto fail_allocate_vidmem;
1100
1101         dqm->fence_addr = dqm->fence_mem->cpu_ptr;
1102         dqm->fence_gpu_addr = dqm->fence_mem->gpu_addr;
1103
1104         init_interrupts(dqm);
1105
1106         dqm_lock(dqm);
1107         /* clear hang status when driver try to start the hw scheduler */
1108         dqm->is_hws_hang = false;
1109         dqm->is_resetting = false;
1110         dqm->sched_running = true;
1111         execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
1112         dqm_unlock(dqm);
1113
1114         return 0;
1115 fail_allocate_vidmem:
1116 fail_set_sched_resources:
1117         pm_uninit(&dqm->packets, false);
1118 fail_packet_manager_init:
1119         return retval;
1120 }
1121
1122 static int stop_cpsch(struct device_queue_manager *dqm)
1123 {
1124         bool hanging;
1125
1126         dqm_lock(dqm);
1127         if (!dqm->is_hws_hang)
1128                 unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0);
1129         hanging = dqm->is_hws_hang || dqm->is_resetting;
1130         dqm->sched_running = false;
1131         dqm_unlock(dqm);
1132
1133         kfd_gtt_sa_free(dqm->dev, dqm->fence_mem);
1134         pm_uninit(&dqm->packets, hanging);
1135
1136         return 0;
1137 }
1138
1139 static int create_kernel_queue_cpsch(struct device_queue_manager *dqm,
1140                                         struct kernel_queue *kq,
1141                                         struct qcm_process_device *qpd)
1142 {
1143         dqm_lock(dqm);
1144         if (dqm->total_queue_count >= max_num_of_queues_per_device) {
1145                 pr_warn("Can't create new kernel queue because %d queues were already created\n",
1146                                 dqm->total_queue_count);
1147                 dqm_unlock(dqm);
1148                 return -EPERM;
1149         }
1150
1151         /*
1152          * Unconditionally increment this counter, regardless of the queue's
1153          * type or whether the queue is active.
1154          */
1155         dqm->total_queue_count++;
1156         pr_debug("Total of %d queues are accountable so far\n",
1157                         dqm->total_queue_count);
1158
1159         list_add(&kq->list, &qpd->priv_queue_list);
1160         dqm->queue_count++;
1161         qpd->is_debug = true;
1162         execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
1163         dqm_unlock(dqm);
1164
1165         return 0;
1166 }
1167
1168 static void destroy_kernel_queue_cpsch(struct device_queue_manager *dqm,
1169                                         struct kernel_queue *kq,
1170                                         struct qcm_process_device *qpd)
1171 {
1172         dqm_lock(dqm);
1173         list_del(&kq->list);
1174         dqm->queue_count--;
1175         qpd->is_debug = false;
1176         execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0);
1177         /*
1178          * Unconditionally decrement this counter, regardless of the queue's
1179          * type.
1180          */
1181         dqm->total_queue_count--;
1182         pr_debug("Total of %d queues are accountable so far\n",
1183                         dqm->total_queue_count);
1184         dqm_unlock(dqm);
1185 }
1186
1187 static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
1188                         struct qcm_process_device *qpd)
1189 {
1190         int retval;
1191         struct mqd_manager *mqd_mgr;
1192
1193         if (dqm->total_queue_count >= max_num_of_queues_per_device) {
1194                 pr_warn("Can't create new usermode queue because %d queues were already created\n",
1195                                 dqm->total_queue_count);
1196                 retval = -EPERM;
1197                 goto out;
1198         }
1199
1200         if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
1201                 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1202                 dqm_lock(dqm);
1203                 retval = allocate_sdma_queue(dqm, q);
1204                 dqm_unlock(dqm);
1205                 if (retval)
1206                         goto out;
1207         }
1208
1209         retval = allocate_doorbell(qpd, q);
1210         if (retval)
1211                 goto out_deallocate_sdma_queue;
1212
1213         mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
1214                         q->properties.type)];
1215
1216         if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
1217                 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
1218                 dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
1219         q->properties.tba_addr = qpd->tba_addr;
1220         q->properties.tma_addr = qpd->tma_addr;
1221         q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
1222         if (!q->mqd_mem_obj) {
1223                 retval = -ENOMEM;
1224                 goto out_deallocate_doorbell;
1225         }
1226
1227         dqm_lock(dqm);
1228         /*
1229          * Eviction state logic: mark all queues as evicted, even ones
1230          * not currently active. Restoring inactive queues later only
1231          * updates the is_evicted flag but is a no-op otherwise.
1232          */
1233         q->properties.is_evicted = !!qpd->evicted;
1234         mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
1235                                 &q->gart_mqd_addr, &q->properties);
1236
1237         list_add(&q->list, &qpd->queues_list);
1238         qpd->queue_count++;
1239         if (q->properties.is_active) {
1240                 dqm->queue_count++;
1241                 retval = execute_queues_cpsch(dqm,
1242                                 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
1243         }
1244
1245         if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
1246                 dqm->sdma_queue_count++;
1247         else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
1248                 dqm->xgmi_sdma_queue_count++;
1249         /*
1250          * Unconditionally increment this counter, regardless of the queue's
1251          * type or whether the queue is active.
1252          */
1253         dqm->total_queue_count++;
1254
1255         pr_debug("Total of %d queues are accountable so far\n",
1256                         dqm->total_queue_count);
1257
1258         dqm_unlock(dqm);
1259         return retval;
1260
1261 out_deallocate_doorbell:
1262         deallocate_doorbell(qpd, q);
1263 out_deallocate_sdma_queue:
1264         if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
1265                 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1266                 dqm_lock(dqm);
1267                 deallocate_sdma_queue(dqm, q);
1268                 dqm_unlock(dqm);
1269         }
1270 out:
1271         return retval;
1272 }
1273
1274 int amdkfd_fence_wait_timeout(unsigned int *fence_addr,
1275                                 unsigned int fence_value,
1276                                 unsigned int timeout_ms)
1277 {
1278         unsigned long end_jiffies = msecs_to_jiffies(timeout_ms) + jiffies;
1279
1280         while (*fence_addr != fence_value) {
1281                 if (time_after(jiffies, end_jiffies)) {
1282                         pr_err("qcm fence wait loop timeout expired\n");
1283                         /* In HWS case, this is used to halt the driver thread
1284                          * in order not to mess up CP states before doing
1285                          * scandumps for FW debugging.
1286                          */
1287                         while (halt_if_hws_hang)
1288                                 schedule();
1289
1290                         return -ETIME;
1291                 }
1292                 schedule();
1293         }
1294
1295         return 0;
1296 }
1297
1298 static int unmap_sdma_queues(struct device_queue_manager *dqm)
1299 {
1300         int i, retval = 0;
1301
1302         for (i = 0; i < dqm->dev->device_info->num_sdma_engines +
1303                 dqm->dev->device_info->num_xgmi_sdma_engines; i++) {
1304                 retval = pm_send_unmap_queue(&dqm->packets, KFD_QUEUE_TYPE_SDMA,
1305                         KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, false, i);
1306                 if (retval)
1307                         return retval;
1308         }
1309         return retval;
1310 }
1311
1312 /* dqm->lock mutex has to be locked before calling this function */
1313 static int map_queues_cpsch(struct device_queue_manager *dqm)
1314 {
1315         int retval;
1316
1317         if (!dqm->sched_running)
1318                 return 0;
1319         if (dqm->queue_count <= 0 || dqm->processes_count <= 0)
1320                 return 0;
1321         if (dqm->active_runlist)
1322                 return 0;
1323
1324         retval = pm_send_runlist(&dqm->packets, &dqm->queues);
1325         pr_debug("%s sent runlist\n", __func__);
1326         if (retval) {
1327                 pr_err("failed to execute runlist\n");
1328                 return retval;
1329         }
1330         dqm->active_runlist = true;
1331
1332         return retval;
1333 }
1334
1335 /* dqm->lock mutex has to be locked before calling this function */
1336 static int unmap_queues_cpsch(struct device_queue_manager *dqm,
1337                                 enum kfd_unmap_queues_filter filter,
1338                                 uint32_t filter_param)
1339 {
1340         int retval = 0;
1341
1342         if (!dqm->sched_running)
1343                 return 0;
1344         if (dqm->is_hws_hang)
1345                 return -EIO;
1346         if (!dqm->active_runlist)
1347                 return retval;
1348
1349         pr_debug("Before destroying queues, sdma queue count is : %u, xgmi sdma queue count is : %u\n",
1350                 dqm->sdma_queue_count, dqm->xgmi_sdma_queue_count);
1351
1352         if (dqm->sdma_queue_count > 0 || dqm->xgmi_sdma_queue_count)
1353                 unmap_sdma_queues(dqm);
1354
1355         retval = pm_send_unmap_queue(&dqm->packets, KFD_QUEUE_TYPE_COMPUTE,
1356                         filter, filter_param, false, 0);
1357         if (retval)
1358                 return retval;
1359
1360         *dqm->fence_addr = KFD_FENCE_INIT;
1361         pm_send_query_status(&dqm->packets, dqm->fence_gpu_addr,
1362                                 KFD_FENCE_COMPLETED);
1363         /* should be timed out */
1364         retval = amdkfd_fence_wait_timeout(dqm->fence_addr, KFD_FENCE_COMPLETED,
1365                                 queue_preemption_timeout_ms);
1366         if (retval) {
1367                 pr_err("The cp might be in an unrecoverable state due to an unsuccessful queues preemption\n");
1368                 dqm->is_hws_hang = true;
1369                 /* It's possible we're detecting a HWS hang in the
1370                  * middle of a GPU reset. No need to schedule another
1371                  * reset in this case.
1372                  */
1373                 if (!dqm->is_resetting)
1374                         schedule_work(&dqm->hw_exception_work);
1375                 return retval;
1376         }
1377
1378         pm_release_ib(&dqm->packets);
1379         dqm->active_runlist = false;
1380
1381         return retval;
1382 }
1383
1384 /* dqm->lock mutex has to be locked before calling this function */
1385 static int execute_queues_cpsch(struct device_queue_manager *dqm,
1386                                 enum kfd_unmap_queues_filter filter,
1387                                 uint32_t filter_param)
1388 {
1389         int retval;
1390
1391         if (dqm->is_hws_hang)
1392                 return -EIO;
1393         retval = unmap_queues_cpsch(dqm, filter, filter_param);
1394         if (retval)
1395                 return retval;
1396
1397         return map_queues_cpsch(dqm);
1398 }
1399
1400 static int destroy_queue_cpsch(struct device_queue_manager *dqm,
1401                                 struct qcm_process_device *qpd,
1402                                 struct queue *q)
1403 {
1404         int retval;
1405         struct mqd_manager *mqd_mgr;
1406
1407         retval = 0;
1408
1409         /* remove queue from list to prevent rescheduling after preemption */
1410         dqm_lock(dqm);
1411
1412         if (qpd->is_debug) {
1413                 /*
1414                  * error, currently we do not allow to destroy a queue
1415                  * of a currently debugged process
1416                  */
1417                 retval = -EBUSY;
1418                 goto failed_try_destroy_debugged_queue;
1419
1420         }
1421
1422         mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
1423                         q->properties.type)];
1424
1425         deallocate_doorbell(qpd, q);
1426
1427         if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
1428                 dqm->sdma_queue_count--;
1429                 deallocate_sdma_queue(dqm, q);
1430         } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1431                 dqm->xgmi_sdma_queue_count--;
1432                 deallocate_sdma_queue(dqm, q);
1433         }
1434
1435         list_del(&q->list);
1436         qpd->queue_count--;
1437         if (q->properties.is_active) {
1438                 dqm->queue_count--;
1439                 retval = execute_queues_cpsch(dqm,
1440                                 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
1441                 if (retval == -ETIME)
1442                         qpd->reset_wavefronts = true;
1443         }
1444
1445         /*
1446          * Unconditionally decrement this counter, regardless of the queue's
1447          * type
1448          */
1449         dqm->total_queue_count--;
1450         pr_debug("Total of %d queues are accountable so far\n",
1451                         dqm->total_queue_count);
1452
1453         dqm_unlock(dqm);
1454
1455         /* Do free_mqd after dqm_unlock(dqm) to avoid circular locking */
1456         mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
1457
1458         return retval;
1459
1460 failed_try_destroy_debugged_queue:
1461
1462         dqm_unlock(dqm);
1463         return retval;
1464 }
1465
1466 /*
1467  * Low bits must be 0000/FFFF as required by HW, high bits must be 0 to
1468  * stay in user mode.
1469  */
1470 #define APE1_FIXED_BITS_MASK 0xFFFF80000000FFFFULL
1471 /* APE1 limit is inclusive and 64K aligned. */
1472 #define APE1_LIMIT_ALIGNMENT 0xFFFF
1473
1474 static bool set_cache_memory_policy(struct device_queue_manager *dqm,
1475                                    struct qcm_process_device *qpd,
1476                                    enum cache_policy default_policy,
1477                                    enum cache_policy alternate_policy,
1478                                    void __user *alternate_aperture_base,
1479                                    uint64_t alternate_aperture_size)
1480 {
1481         bool retval = true;
1482
1483         if (!dqm->asic_ops.set_cache_memory_policy)
1484                 return retval;
1485
1486         dqm_lock(dqm);
1487
1488         if (alternate_aperture_size == 0) {
1489                 /* base > limit disables APE1 */
1490                 qpd->sh_mem_ape1_base = 1;
1491                 qpd->sh_mem_ape1_limit = 0;
1492         } else {
1493                 /*
1494                  * In FSA64, APE1_Base[63:0] = { 16{SH_MEM_APE1_BASE[31]},
1495                  *                      SH_MEM_APE1_BASE[31:0], 0x0000 }
1496                  * APE1_Limit[63:0] = { 16{SH_MEM_APE1_LIMIT[31]},
1497                  *                      SH_MEM_APE1_LIMIT[31:0], 0xFFFF }
1498                  * Verify that the base and size parameters can be
1499                  * represented in this format and convert them.
1500                  * Additionally restrict APE1 to user-mode addresses.
1501                  */
1502
1503                 uint64_t base = (uintptr_t)alternate_aperture_base;
1504                 uint64_t limit = base + alternate_aperture_size - 1;
1505
1506                 if (limit <= base || (base & APE1_FIXED_BITS_MASK) != 0 ||
1507                    (limit & APE1_FIXED_BITS_MASK) != APE1_LIMIT_ALIGNMENT) {
1508                         retval = false;
1509                         goto out;
1510                 }
1511
1512                 qpd->sh_mem_ape1_base = base >> 16;
1513                 qpd->sh_mem_ape1_limit = limit >> 16;
1514         }
1515
1516         retval = dqm->asic_ops.set_cache_memory_policy(
1517                         dqm,
1518                         qpd,
1519                         default_policy,
1520                         alternate_policy,
1521                         alternate_aperture_base,
1522                         alternate_aperture_size);
1523
1524         if ((dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) && (qpd->vmid != 0))
1525                 program_sh_mem_settings(dqm, qpd);
1526
1527         pr_debug("sh_mem_config: 0x%x, ape1_base: 0x%x, ape1_limit: 0x%x\n",
1528                 qpd->sh_mem_config, qpd->sh_mem_ape1_base,
1529                 qpd->sh_mem_ape1_limit);
1530
1531 out:
1532         dqm_unlock(dqm);
1533         return retval;
1534 }
1535
1536 static int set_trap_handler(struct device_queue_manager *dqm,
1537                                 struct qcm_process_device *qpd,
1538                                 uint64_t tba_addr,
1539                                 uint64_t tma_addr)
1540 {
1541         uint64_t *tma;
1542
1543         if (dqm->dev->cwsr_enabled) {
1544                 /* Jump from CWSR trap handler to user trap */
1545                 tma = (uint64_t *)(qpd->cwsr_kaddr + KFD_CWSR_TMA_OFFSET);
1546                 tma[0] = tba_addr;
1547                 tma[1] = tma_addr;
1548         } else {
1549                 qpd->tba_addr = tba_addr;
1550                 qpd->tma_addr = tma_addr;
1551         }
1552
1553         return 0;
1554 }
1555
1556 static int process_termination_nocpsch(struct device_queue_manager *dqm,
1557                 struct qcm_process_device *qpd)
1558 {
1559         struct queue *q, *next;
1560         struct device_process_node *cur, *next_dpn;
1561         int retval = 0;
1562         bool found = false;
1563
1564         dqm_lock(dqm);
1565
1566         /* Clear all user mode queues */
1567         list_for_each_entry_safe(q, next, &qpd->queues_list, list) {
1568                 int ret;
1569
1570                 ret = destroy_queue_nocpsch_locked(dqm, qpd, q);
1571                 if (ret)
1572                         retval = ret;
1573         }
1574
1575         /* Unregister process */
1576         list_for_each_entry_safe(cur, next_dpn, &dqm->queues, list) {
1577                 if (qpd == cur->qpd) {
1578                         list_del(&cur->list);
1579                         kfree(cur);
1580                         dqm->processes_count--;
1581                         found = true;
1582                         break;
1583                 }
1584         }
1585
1586         dqm_unlock(dqm);
1587
1588         /* Outside the DQM lock because under the DQM lock we can't do
1589          * reclaim or take other locks that others hold while reclaiming.
1590          */
1591         if (found)
1592                 kfd_dec_compute_active(dqm->dev);
1593
1594         return retval;
1595 }
1596
1597 static int get_wave_state(struct device_queue_manager *dqm,
1598                           struct queue *q,
1599                           void __user *ctl_stack,
1600                           u32 *ctl_stack_used_size,
1601                           u32 *save_area_used_size)
1602 {
1603         struct mqd_manager *mqd_mgr;
1604         int r;
1605
1606         dqm_lock(dqm);
1607
1608         if (q->properties.type != KFD_QUEUE_TYPE_COMPUTE ||
1609             q->properties.is_active || !q->device->cwsr_enabled) {
1610                 r = -EINVAL;
1611                 goto dqm_unlock;
1612         }
1613
1614         mqd_mgr = dqm->mqd_mgrs[KFD_MQD_TYPE_CP];
1615
1616         if (!mqd_mgr->get_wave_state) {
1617                 r = -EINVAL;
1618                 goto dqm_unlock;
1619         }
1620
1621         r = mqd_mgr->get_wave_state(mqd_mgr, q->mqd, ctl_stack,
1622                         ctl_stack_used_size, save_area_used_size);
1623
1624 dqm_unlock:
1625         dqm_unlock(dqm);
1626         return r;
1627 }
1628
1629 static int process_termination_cpsch(struct device_queue_manager *dqm,
1630                 struct qcm_process_device *qpd)
1631 {
1632         int retval;
1633         struct queue *q, *next;
1634         struct kernel_queue *kq, *kq_next;
1635         struct mqd_manager *mqd_mgr;
1636         struct device_process_node *cur, *next_dpn;
1637         enum kfd_unmap_queues_filter filter =
1638                 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES;
1639         bool found = false;
1640
1641         retval = 0;
1642
1643         dqm_lock(dqm);
1644
1645         /* Clean all kernel queues */
1646         list_for_each_entry_safe(kq, kq_next, &qpd->priv_queue_list, list) {
1647                 list_del(&kq->list);
1648                 dqm->queue_count--;
1649                 qpd->is_debug = false;
1650                 dqm->total_queue_count--;
1651                 filter = KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES;
1652         }
1653
1654         /* Clear all user mode queues */
1655         list_for_each_entry(q, &qpd->queues_list, list) {
1656                 if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
1657                         dqm->sdma_queue_count--;
1658                         deallocate_sdma_queue(dqm, q);
1659                 } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1660                         dqm->xgmi_sdma_queue_count--;
1661                         deallocate_sdma_queue(dqm, q);
1662                 }
1663
1664                 if (q->properties.is_active)
1665                         dqm->queue_count--;
1666
1667                 dqm->total_queue_count--;
1668         }
1669
1670         /* Unregister process */
1671         list_for_each_entry_safe(cur, next_dpn, &dqm->queues, list) {
1672                 if (qpd == cur->qpd) {
1673                         list_del(&cur->list);
1674                         kfree(cur);
1675                         dqm->processes_count--;
1676                         found = true;
1677                         break;
1678                 }
1679         }
1680
1681         retval = execute_queues_cpsch(dqm, filter, 0);
1682         if ((!dqm->is_hws_hang) && (retval || qpd->reset_wavefronts)) {
1683                 pr_warn("Resetting wave fronts (cpsch) on dev %p\n", dqm->dev);
1684                 dbgdev_wave_reset_wavefronts(dqm->dev, qpd->pqm->process);
1685                 qpd->reset_wavefronts = false;
1686         }
1687
1688         dqm_unlock(dqm);
1689
1690         /* Outside the DQM lock because under the DQM lock we can't do
1691          * reclaim or take other locks that others hold while reclaiming.
1692          */
1693         if (found)
1694                 kfd_dec_compute_active(dqm->dev);
1695
1696         /* Lastly, free mqd resources.
1697          * Do free_mqd() after dqm_unlock to avoid circular locking.
1698          */
1699         list_for_each_entry_safe(q, next, &qpd->queues_list, list) {
1700                 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
1701                                 q->properties.type)];
1702                 list_del(&q->list);
1703                 qpd->queue_count--;
1704                 mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
1705         }
1706
1707         return retval;
1708 }
1709
1710 static int init_mqd_managers(struct device_queue_manager *dqm)
1711 {
1712         int i, j;
1713         struct mqd_manager *mqd_mgr;
1714
1715         for (i = 0; i < KFD_MQD_TYPE_MAX; i++) {
1716                 mqd_mgr = dqm->asic_ops.mqd_manager_init(i, dqm->dev);
1717                 if (!mqd_mgr) {
1718                         pr_err("mqd manager [%d] initialization failed\n", i);
1719                         goto out_free;
1720                 }
1721                 dqm->mqd_mgrs[i] = mqd_mgr;
1722         }
1723
1724         return 0;
1725
1726 out_free:
1727         for (j = 0; j < i; j++) {
1728                 kfree(dqm->mqd_mgrs[j]);
1729                 dqm->mqd_mgrs[j] = NULL;
1730         }
1731
1732         return -ENOMEM;
1733 }
1734
1735 /* Allocate one hiq mqd (HWS) and all SDMA mqd in a continuous trunk*/
1736 static int allocate_hiq_sdma_mqd(struct device_queue_manager *dqm)
1737 {
1738         int retval;
1739         struct kfd_dev *dev = dqm->dev;
1740         struct kfd_mem_obj *mem_obj = &dqm->hiq_sdma_mqd;
1741         uint32_t size = dqm->mqd_mgrs[KFD_MQD_TYPE_SDMA]->mqd_size *
1742                 (dev->device_info->num_sdma_engines +
1743                 dev->device_info->num_xgmi_sdma_engines) *
1744                 dev->device_info->num_sdma_queues_per_engine +
1745                 dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ]->mqd_size;
1746
1747         retval = amdgpu_amdkfd_alloc_gtt_mem(dev->kgd, size,
1748                 &(mem_obj->gtt_mem), &(mem_obj->gpu_addr),
1749                 (void *)&(mem_obj->cpu_ptr), true);
1750
1751         return retval;
1752 }
1753
1754 struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev)
1755 {
1756         struct device_queue_manager *dqm;
1757
1758         pr_debug("Loading device queue manager\n");
1759
1760         dqm = kzalloc(sizeof(*dqm), GFP_KERNEL);
1761         if (!dqm)
1762                 return NULL;
1763
1764         switch (dev->device_info->asic_family) {
1765         /* HWS is not available on Hawaii. */
1766         case CHIP_HAWAII:
1767         /* HWS depends on CWSR for timely dequeue. CWSR is not
1768          * available on Tonga.
1769          *
1770          * FIXME: This argument also applies to Kaveri.
1771          */
1772         case CHIP_TONGA:
1773                 dqm->sched_policy = KFD_SCHED_POLICY_NO_HWS;
1774                 break;
1775         default:
1776                 dqm->sched_policy = sched_policy;
1777                 break;
1778         }
1779
1780         dqm->dev = dev;
1781         switch (dqm->sched_policy) {
1782         case KFD_SCHED_POLICY_HWS:
1783         case KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION:
1784                 /* initialize dqm for cp scheduling */
1785                 dqm->ops.create_queue = create_queue_cpsch;
1786                 dqm->ops.initialize = initialize_cpsch;
1787                 dqm->ops.start = start_cpsch;
1788                 dqm->ops.stop = stop_cpsch;
1789                 dqm->ops.pre_reset = pre_reset;
1790                 dqm->ops.destroy_queue = destroy_queue_cpsch;
1791                 dqm->ops.update_queue = update_queue;
1792                 dqm->ops.register_process = register_process;
1793                 dqm->ops.unregister_process = unregister_process;
1794                 dqm->ops.uninitialize = uninitialize;
1795                 dqm->ops.create_kernel_queue = create_kernel_queue_cpsch;
1796                 dqm->ops.destroy_kernel_queue = destroy_kernel_queue_cpsch;
1797                 dqm->ops.set_cache_memory_policy = set_cache_memory_policy;
1798                 dqm->ops.set_trap_handler = set_trap_handler;
1799                 dqm->ops.process_termination = process_termination_cpsch;
1800                 dqm->ops.evict_process_queues = evict_process_queues_cpsch;
1801                 dqm->ops.restore_process_queues = restore_process_queues_cpsch;
1802                 dqm->ops.get_wave_state = get_wave_state;
1803                 break;
1804         case KFD_SCHED_POLICY_NO_HWS:
1805                 /* initialize dqm for no cp scheduling */
1806                 dqm->ops.start = start_nocpsch;
1807                 dqm->ops.stop = stop_nocpsch;
1808                 dqm->ops.pre_reset = pre_reset;
1809                 dqm->ops.create_queue = create_queue_nocpsch;
1810                 dqm->ops.destroy_queue = destroy_queue_nocpsch;
1811                 dqm->ops.update_queue = update_queue;
1812                 dqm->ops.register_process = register_process;
1813                 dqm->ops.unregister_process = unregister_process;
1814                 dqm->ops.initialize = initialize_nocpsch;
1815                 dqm->ops.uninitialize = uninitialize;
1816                 dqm->ops.set_cache_memory_policy = set_cache_memory_policy;
1817                 dqm->ops.set_trap_handler = set_trap_handler;
1818                 dqm->ops.process_termination = process_termination_nocpsch;
1819                 dqm->ops.evict_process_queues = evict_process_queues_nocpsch;
1820                 dqm->ops.restore_process_queues =
1821                         restore_process_queues_nocpsch;
1822                 dqm->ops.get_wave_state = get_wave_state;
1823                 break;
1824         default:
1825                 pr_err("Invalid scheduling policy %d\n", dqm->sched_policy);
1826                 goto out_free;
1827         }
1828
1829         switch (dev->device_info->asic_family) {
1830         case CHIP_CARRIZO:
1831                 device_queue_manager_init_vi(&dqm->asic_ops);
1832                 break;
1833
1834         case CHIP_KAVERI:
1835                 device_queue_manager_init_cik(&dqm->asic_ops);
1836                 break;
1837
1838         case CHIP_HAWAII:
1839                 device_queue_manager_init_cik_hawaii(&dqm->asic_ops);
1840                 break;
1841
1842         case CHIP_TONGA:
1843         case CHIP_FIJI:
1844         case CHIP_POLARIS10:
1845         case CHIP_POLARIS11:
1846         case CHIP_POLARIS12:
1847         case CHIP_VEGAM:
1848                 device_queue_manager_init_vi_tonga(&dqm->asic_ops);
1849                 break;
1850
1851         case CHIP_VEGA10:
1852         case CHIP_VEGA12:
1853         case CHIP_VEGA20:
1854         case CHIP_RAVEN:
1855         case CHIP_RENOIR:
1856         case CHIP_ARCTURUS:
1857                 device_queue_manager_init_v9(&dqm->asic_ops);
1858                 break;
1859         case CHIP_NAVI10:
1860         case CHIP_NAVI12:
1861         case CHIP_NAVI14:
1862                 device_queue_manager_init_v10_navi10(&dqm->asic_ops);
1863                 break;
1864         default:
1865                 WARN(1, "Unexpected ASIC family %u",
1866                      dev->device_info->asic_family);
1867                 goto out_free;
1868         }
1869
1870         if (init_mqd_managers(dqm))
1871                 goto out_free;
1872
1873         if (allocate_hiq_sdma_mqd(dqm)) {
1874                 pr_err("Failed to allocate hiq sdma mqd trunk buffer\n");
1875                 goto out_free;
1876         }
1877
1878         if (!dqm->ops.initialize(dqm))
1879                 return dqm;
1880
1881 out_free:
1882         kfree(dqm);
1883         return NULL;
1884 }
1885
1886 static void deallocate_hiq_sdma_mqd(struct kfd_dev *dev,
1887                                     struct kfd_mem_obj *mqd)
1888 {
1889         WARN(!mqd, "No hiq sdma mqd trunk to free");
1890
1891         amdgpu_amdkfd_free_gtt_mem(dev->kgd, mqd->gtt_mem);
1892 }
1893
1894 void device_queue_manager_uninit(struct device_queue_manager *dqm)
1895 {
1896         dqm->ops.uninitialize(dqm);
1897         deallocate_hiq_sdma_mqd(dqm->dev, &dqm->hiq_sdma_mqd);
1898         kfree(dqm);
1899 }
1900
1901 int kfd_process_vm_fault(struct device_queue_manager *dqm,
1902                          unsigned int pasid)
1903 {
1904         struct kfd_process_device *pdd;
1905         struct kfd_process *p = kfd_lookup_process_by_pasid(pasid);
1906         int ret = 0;
1907
1908         if (!p)
1909                 return -EINVAL;
1910         pdd = kfd_get_process_device_data(dqm->dev, p);
1911         if (pdd)
1912                 ret = dqm->ops.evict_process_queues(dqm, &pdd->qpd);
1913         kfd_unref_process(p);
1914
1915         return ret;
1916 }
1917
1918 static void kfd_process_hw_exception(struct work_struct *work)
1919 {
1920         struct device_queue_manager *dqm = container_of(work,
1921                         struct device_queue_manager, hw_exception_work);
1922         amdgpu_amdkfd_gpu_reset(dqm->dev->kgd);
1923 }
1924
1925 #if defined(CONFIG_DEBUG_FS)
1926
1927 static void seq_reg_dump(struct seq_file *m,
1928                          uint32_t (*dump)[2], uint32_t n_regs)
1929 {
1930         uint32_t i, count;
1931
1932         for (i = 0, count = 0; i < n_regs; i++) {
1933                 if (count == 0 ||
1934                     dump[i-1][0] + sizeof(uint32_t) != dump[i][0]) {
1935                         seq_printf(m, "%s    %08x: %08x",
1936                                    i ? "\n" : "",
1937                                    dump[i][0], dump[i][1]);
1938                         count = 7;
1939                 } else {
1940                         seq_printf(m, " %08x", dump[i][1]);
1941                         count--;
1942                 }
1943         }
1944
1945         seq_puts(m, "\n");
1946 }
1947
1948 int dqm_debugfs_hqds(struct seq_file *m, void *data)
1949 {
1950         struct device_queue_manager *dqm = data;
1951         uint32_t (*dump)[2], n_regs;
1952         int pipe, queue;
1953         int r = 0;
1954
1955         if (!dqm->sched_running) {
1956                 seq_printf(m, " Device is stopped\n");
1957
1958                 return 0;
1959         }
1960
1961         r = dqm->dev->kfd2kgd->hqd_dump(dqm->dev->kgd,
1962                                         KFD_CIK_HIQ_PIPE, KFD_CIK_HIQ_QUEUE,
1963                                         &dump, &n_regs);
1964         if (!r) {
1965                 seq_printf(m, "  HIQ on MEC %d Pipe %d Queue %d\n",
1966                            KFD_CIK_HIQ_PIPE/get_pipes_per_mec(dqm)+1,
1967                            KFD_CIK_HIQ_PIPE%get_pipes_per_mec(dqm),
1968                            KFD_CIK_HIQ_QUEUE);
1969                 seq_reg_dump(m, dump, n_regs);
1970
1971                 kfree(dump);
1972         }
1973
1974         for (pipe = 0; pipe < get_pipes_per_mec(dqm); pipe++) {
1975                 int pipe_offset = pipe * get_queues_per_pipe(dqm);
1976
1977                 for (queue = 0; queue < get_queues_per_pipe(dqm); queue++) {
1978                         if (!test_bit(pipe_offset + queue,
1979                                       dqm->dev->shared_resources.queue_bitmap))
1980                                 continue;
1981
1982                         r = dqm->dev->kfd2kgd->hqd_dump(
1983                                 dqm->dev->kgd, pipe, queue, &dump, &n_regs);
1984                         if (r)
1985                                 break;
1986
1987                         seq_printf(m, "  CP Pipe %d, Queue %d\n",
1988                                   pipe, queue);
1989                         seq_reg_dump(m, dump, n_regs);
1990
1991                         kfree(dump);
1992                 }
1993         }
1994
1995         for (pipe = 0; pipe < get_num_sdma_engines(dqm) +
1996                         get_num_xgmi_sdma_engines(dqm); pipe++) {
1997                 for (queue = 0;
1998                      queue < dqm->dev->device_info->num_sdma_queues_per_engine;
1999                      queue++) {
2000                         r = dqm->dev->kfd2kgd->hqd_sdma_dump(
2001                                 dqm->dev->kgd, pipe, queue, &dump, &n_regs);
2002                         if (r)
2003                                 break;
2004
2005                         seq_printf(m, "  SDMA Engine %d, RLC %d\n",
2006                                   pipe, queue);
2007                         seq_reg_dump(m, dump, n_regs);
2008
2009                         kfree(dump);
2010                 }
2011         }
2012
2013         return r;
2014 }
2015
2016 int dqm_debugfs_execute_queues(struct device_queue_manager *dqm)
2017 {
2018         int r = 0;
2019
2020         dqm_lock(dqm);
2021         dqm->active_runlist = true;
2022         r = execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0);
2023         dqm_unlock(dqm);
2024
2025         return r;
2026 }
2027
2028 #endif