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

   1 // SPDX-License-Identifier: GPL-2.0 OR MIT
   2 /*
   3  * Copyright 2014-2022 Advanced Micro Devices, Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19  * 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 OR
  21  * OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  */
  24
  25 #include <linux/ratelimit.h>
  26 #include <linux/printk.h>
  27 #include <linux/slab.h>
  28 #include <linux/list.h>
  29 #include <linux/types.h>
  30 #include <linux/bitops.h>
  31 #include <linux/sched.h>
  32 #include "kfd_priv.h"
  33 #include "kfd_device_queue_manager.h"
  34 #include "kfd_mqd_manager.h"
  35 #include "cik_regs.h"
  36 #include "kfd_kernel_queue.h"
  37 #include "amdgpu_amdkfd.h"
  38 #include "mes_api_def.h"
  39 #include "kfd_debug.h"
  40
  41 /* Size of the per-pipe EOP queue */
  42 #define CIK_HPD_EOP_BYTES_LOG2 11
  43 #define CIK_HPD_EOP_BYTES (1U << CIK_HPD_EOP_BYTES_LOG2)
  44
  45 static int set_pasid_vmid_mapping(struct device_queue_manager *dqm,
  46                                   u32 pasid, unsigned int vmid);
  47
  48 static int execute_queues_cpsch(struct device_queue_manager *dqm,
  49                                 enum kfd_unmap_queues_filter filter,
  50                                 uint32_t filter_param,
  51                                 uint32_t grace_period);
  52 static int unmap_queues_cpsch(struct device_queue_manager *dqm,
  53                                 enum kfd_unmap_queues_filter filter,
  54                                 uint32_t filter_param,
  55                                 uint32_t grace_period,
  56                                 bool reset);
  57
  58 static int map_queues_cpsch(struct device_queue_manager *dqm);
  59
  60 static void deallocate_sdma_queue(struct device_queue_manager *dqm,
  61                                 struct queue *q);
  62
  63 static inline void deallocate_hqd(struct device_queue_manager *dqm,
  64                                 struct queue *q);
  65 static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q);
  66 static int allocate_sdma_queue(struct device_queue_manager *dqm,
  67                                 struct queue *q, const uint32_t *restore_sdma_id);
  68 static void kfd_process_hw_exception(struct work_struct *work);
  69
  70 static inline
  71 enum KFD_MQD_TYPE get_mqd_type_from_queue_type(enum kfd_queue_type type)
  72 {
  73         if (type == KFD_QUEUE_TYPE_SDMA || type == KFD_QUEUE_TYPE_SDMA_XGMI)
  74                 return KFD_MQD_TYPE_SDMA;
  75         return KFD_MQD_TYPE_CP;
  76 }
  77
  78 static bool is_pipe_enabled(struct device_queue_manager *dqm, int mec, int pipe)
  79 {
  80         int i;
  81         int pipe_offset = (mec * dqm->dev->kfd->shared_resources.num_pipe_per_mec
  82                 + pipe) * dqm->dev->kfd->shared_resources.num_queue_per_pipe;
  83
  84         /* queue is available for KFD usage if bit is 1 */
  85         for (i = 0; i <  dqm->dev->kfd->shared_resources.num_queue_per_pipe; ++i)
  86                 if (test_bit(pipe_offset + i,
  87                               dqm->dev->kfd->shared_resources.cp_queue_bitmap))
  88                         return true;
  89         return false;
  90 }
  91
  92 unsigned int get_cp_queues_num(struct device_queue_manager *dqm)
  93 {
  94         return bitmap_weight(dqm->dev->kfd->shared_resources.cp_queue_bitmap,
  95                                 AMDGPU_MAX_QUEUES);
  96 }
  97
  98 unsigned int get_queues_per_pipe(struct device_queue_manager *dqm)
  99 {
 100         return dqm->dev->kfd->shared_resources.num_queue_per_pipe;
 101 }
 102
 103 unsigned int get_pipes_per_mec(struct device_queue_manager *dqm)
 104 {
 105         return dqm->dev->kfd->shared_resources.num_pipe_per_mec;
 106 }
 107
 108 static unsigned int get_num_all_sdma_engines(struct device_queue_manager *dqm)
 109 {
 110         return kfd_get_num_sdma_engines(dqm->dev) +
 111                 kfd_get_num_xgmi_sdma_engines(dqm->dev);
 112 }
 113
 114 unsigned int get_num_sdma_queues(struct device_queue_manager *dqm)
 115 {
 116         return kfd_get_num_sdma_engines(dqm->dev) *
 117                 dqm->dev->kfd->device_info.num_sdma_queues_per_engine;
 118 }
 119
 120 unsigned int get_num_xgmi_sdma_queues(struct device_queue_manager *dqm)
 121 {
 122         return kfd_get_num_xgmi_sdma_engines(dqm->dev) *
 123                 dqm->dev->kfd->device_info.num_sdma_queues_per_engine;
 124 }
 125
 126 static void init_sdma_bitmaps(struct device_queue_manager *dqm)
 127 {
 128         bitmap_zero(dqm->sdma_bitmap, KFD_MAX_SDMA_QUEUES);
 129         bitmap_set(dqm->sdma_bitmap, 0, get_num_sdma_queues(dqm));
 130
 131         bitmap_zero(dqm->xgmi_sdma_bitmap, KFD_MAX_SDMA_QUEUES);
 132         bitmap_set(dqm->xgmi_sdma_bitmap, 0, get_num_xgmi_sdma_queues(dqm));
 133
 134         /* Mask out the reserved queues */
 135         bitmap_andnot(dqm->sdma_bitmap, dqm->sdma_bitmap,
 136                       dqm->dev->kfd->device_info.reserved_sdma_queues_bitmap,
 137                       KFD_MAX_SDMA_QUEUES);
 138 }
 139
 140 void program_sh_mem_settings(struct device_queue_manager *dqm,
 141                                         struct qcm_process_device *qpd)
 142 {
 143         uint32_t xcc_mask = dqm->dev->xcc_mask;
 144         int xcc_id;
 145
 146         for_each_inst(xcc_id, xcc_mask)
 147                 dqm->dev->kfd2kgd->program_sh_mem_settings(
 148                         dqm->dev->adev, qpd->vmid, qpd->sh_mem_config,
 149                         qpd->sh_mem_ape1_base, qpd->sh_mem_ape1_limit,
 150                         qpd->sh_mem_bases, xcc_id);
 151 }
 152
 153 static void kfd_hws_hang(struct device_queue_manager *dqm)
 154 {
 155         /*
 156          * Issue a GPU reset if HWS is unresponsive
 157          */
 158         dqm->is_hws_hang = true;
 159
 160         /* It's possible we're detecting a HWS hang in the
 161          * middle of a GPU reset. No need to schedule another
 162          * reset in this case.
 163          */
 164         if (!dqm->is_resetting)
 165                 schedule_work(&dqm->hw_exception_work);
 166 }
 167
 168 static int convert_to_mes_queue_type(int queue_type)
 169 {
 170         int mes_queue_type;
 171
 172         switch (queue_type) {
 173         case KFD_QUEUE_TYPE_COMPUTE:
 174                 mes_queue_type = MES_QUEUE_TYPE_COMPUTE;
 175                 break;
 176         case KFD_QUEUE_TYPE_SDMA:
 177                 mes_queue_type = MES_QUEUE_TYPE_SDMA;
 178                 break;
 179         default:
 180                 WARN(1, "Invalid queue type %d", queue_type);
 181                 mes_queue_type = -EINVAL;
 182                 break;
 183         }
 184
 185         return mes_queue_type;
 186 }
 187
 188 static int add_queue_mes(struct device_queue_manager *dqm, struct queue *q,
 189                          struct qcm_process_device *qpd)
 190 {
 191         struct amdgpu_device *adev = (struct amdgpu_device *)dqm->dev->adev;
 192         struct kfd_process_device *pdd = qpd_to_pdd(qpd);
 193         struct mes_add_queue_input queue_input;
 194         int r, queue_type;
 195         uint64_t wptr_addr_off;
 196
 197         if (dqm->is_hws_hang)
 198                 return -EIO;
 199
 200         memset(&queue_input, 0x0, sizeof(struct mes_add_queue_input));
 201         queue_input.process_id = qpd->pqm->process->pasid;
 202         queue_input.page_table_base_addr =  qpd->page_table_base;
 203         queue_input.process_va_start = 0;
 204         queue_input.process_va_end = adev->vm_manager.max_pfn - 1;
 205         /* MES unit for quantum is 100ns */
 206         queue_input.process_quantum = KFD_MES_PROCESS_QUANTUM;  /* Equivalent to 10ms. */
 207         queue_input.process_context_addr = pdd->proc_ctx_gpu_addr;
 208         queue_input.gang_quantum = KFD_MES_GANG_QUANTUM; /* Equivalent to 1ms */
 209         queue_input.gang_context_addr = q->gang_ctx_gpu_addr;
 210         queue_input.inprocess_gang_priority = q->properties.priority;
 211         queue_input.gang_global_priority_level =
 212                                         AMDGPU_MES_PRIORITY_LEVEL_NORMAL;
 213         queue_input.doorbell_offset = q->properties.doorbell_off;
 214         queue_input.mqd_addr = q->gart_mqd_addr;
 215         queue_input.wptr_addr = (uint64_t)q->properties.write_ptr;
 216
 217         if (q->wptr_bo) {
 218                 wptr_addr_off = (uint64_t)q->properties.write_ptr & (PAGE_SIZE - 1);
 219                 queue_input.wptr_mc_addr = amdgpu_bo_gpu_offset(q->wptr_bo) + wptr_addr_off;
 220         }
 221
 222         queue_input.is_kfd_process = 1;
 223         queue_input.is_aql_queue = (q->properties.format == KFD_QUEUE_FORMAT_AQL);
 224         queue_input.queue_size = q->properties.queue_size >> 2;
 225
 226         queue_input.paging = false;
 227         queue_input.tba_addr = qpd->tba_addr;
 228         queue_input.tma_addr = qpd->tma_addr;
 229         queue_input.trap_en = !kfd_dbg_has_cwsr_workaround(q->device);
 230         queue_input.skip_process_ctx_clear =
 231                 qpd->pqm->process->runtime_info.runtime_state == DEBUG_RUNTIME_STATE_ENABLED &&
 232                                                 (qpd->pqm->process->debug_trap_enabled ||
 233                                                  kfd_dbg_has_ttmps_always_setup(q->device));
 234
 235         queue_type = convert_to_mes_queue_type(q->properties.type);
 236         if (queue_type < 0) {
 237                 dev_err(adev->dev, "Queue type not supported with MES, queue:%d\n",
 238                         q->properties.type);
 239                 return -EINVAL;
 240         }
 241         queue_input.queue_type = (uint32_t)queue_type;
 242
 243         queue_input.exclusively_scheduled = q->properties.is_gws;
 244
 245         amdgpu_mes_lock(&adev->mes);
 246         r = adev->mes.funcs->add_hw_queue(&adev->mes, &queue_input);
 247         amdgpu_mes_unlock(&adev->mes);
 248         if (r) {
 249                 dev_err(adev->dev, "failed to add hardware queue to MES, doorbell=0x%x\n",
 250                         q->properties.doorbell_off);
 251                 dev_err(adev->dev, "MES might be in unrecoverable state, issue a GPU reset\n");
 252                 kfd_hws_hang(dqm);
 253         }
 254
 255         return r;
 256 }
 257
 258 static int remove_queue_mes(struct device_queue_manager *dqm, struct queue *q,
 259                         struct qcm_process_device *qpd)
 260 {
 261         struct amdgpu_device *adev = (struct amdgpu_device *)dqm->dev->adev;
 262         int r;
 263         struct mes_remove_queue_input queue_input;
 264
 265         if (dqm->is_hws_hang)
 266                 return -EIO;
 267
 268         memset(&queue_input, 0x0, sizeof(struct mes_remove_queue_input));
 269         queue_input.doorbell_offset = q->properties.doorbell_off;
 270         queue_input.gang_context_addr = q->gang_ctx_gpu_addr;
 271
 272         amdgpu_mes_lock(&adev->mes);
 273         r = adev->mes.funcs->remove_hw_queue(&adev->mes, &queue_input);
 274         amdgpu_mes_unlock(&adev->mes);
 275
 276         if (r) {
 277                 dev_err(adev->dev, "failed to remove hardware queue from MES, doorbell=0x%x\n",
 278                         q->properties.doorbell_off);
 279                 dev_err(adev->dev, "MES might be in unrecoverable state, issue a GPU reset\n");
 280                 kfd_hws_hang(dqm);
 281         }
 282
 283         return r;
 284 }
 285
 286 static int remove_all_queues_mes(struct device_queue_manager *dqm)
 287 {
 288         struct device_process_node *cur;
 289         struct device *dev = dqm->dev->adev->dev;
 290         struct qcm_process_device *qpd;
 291         struct queue *q;
 292         int retval = 0;
 293
 294         list_for_each_entry(cur, &dqm->queues, list) {
 295                 qpd = cur->qpd;
 296                 list_for_each_entry(q, &qpd->queues_list, list) {
 297                         if (q->properties.is_active) {
 298                                 retval = remove_queue_mes(dqm, q, qpd);
 299                                 if (retval) {
 300                                         dev_err(dev, "%s: Failed to remove queue %d for dev %d",
 301                                                 __func__,
 302                                                 q->properties.queue_id,
 303                                                 dqm->dev->id);
 304                                         return retval;
 305                                 }
 306                         }
 307                 }
 308         }
 309
 310         return retval;
 311 }
 312
 313 static void increment_queue_count(struct device_queue_manager *dqm,
 314                                   struct qcm_process_device *qpd,
 315                                   struct queue *q)
 316 {
 317         dqm->active_queue_count++;
 318         if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
 319             q->properties.type == KFD_QUEUE_TYPE_DIQ)
 320                 dqm->active_cp_queue_count++;
 321
 322         if (q->properties.is_gws) {
 323                 dqm->gws_queue_count++;
 324                 qpd->mapped_gws_queue = true;
 325         }
 326 }
 327
 328 static void decrement_queue_count(struct device_queue_manager *dqm,
 329                                   struct qcm_process_device *qpd,
 330                                   struct queue *q)
 331 {
 332         dqm->active_queue_count--;
 333         if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
 334             q->properties.type == KFD_QUEUE_TYPE_DIQ)
 335                 dqm->active_cp_queue_count--;
 336
 337         if (q->properties.is_gws) {
 338                 dqm->gws_queue_count--;
 339                 qpd->mapped_gws_queue = false;
 340         }
 341 }
 342
 343 /*
 344  * Allocate a doorbell ID to this queue.
 345  * If doorbell_id is passed in, make sure requested ID is valid then allocate it.
 346  */
 347 static int allocate_doorbell(struct qcm_process_device *qpd,
 348                              struct queue *q,
 349                              uint32_t const *restore_id)
 350 {
 351         struct kfd_node *dev = qpd->dqm->dev;
 352
 353         if (!KFD_IS_SOC15(dev)) {
 354                 /* On pre-SOC15 chips we need to use the queue ID to
 355                  * preserve the user mode ABI.
 356                  */
 357
 358                 if (restore_id && *restore_id != q->properties.queue_id)
 359                         return -EINVAL;
 360
 361                 q->doorbell_id = q->properties.queue_id;
 362         } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 363                         q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
 364                 /* For SDMA queues on SOC15 with 8-byte doorbell, use static
 365                  * doorbell assignments based on the engine and queue id.
 366                  * The doobell index distance between RLC (2*i) and (2*i+1)
 367                  * for a SDMA engine is 512.
 368                  */
 369
 370                 uint32_t *idx_offset = dev->kfd->shared_resources.sdma_doorbell_idx;
 371
 372                 /*
 373                  * q->properties.sdma_engine_id corresponds to the virtual
 374                  * sdma engine number. However, for doorbell allocation,
 375                  * we need the physical sdma engine id in order to get the
 376                  * correct doorbell offset.
 377                  */
 378                 uint32_t valid_id = idx_offset[qpd->dqm->dev->node_id *
 379                                                get_num_all_sdma_engines(qpd->dqm) +
 380                                                q->properties.sdma_engine_id]
 381                                                 + (q->properties.sdma_queue_id & 1)
 382                                                 * KFD_QUEUE_DOORBELL_MIRROR_OFFSET
 383                                                 + (q->properties.sdma_queue_id >> 1);
 384
 385                 if (restore_id && *restore_id != valid_id)
 386                         return -EINVAL;
 387                 q->doorbell_id = valid_id;
 388         } else {
 389                 /* For CP queues on SOC15 */
 390                 if (restore_id) {
 391                         /* make sure that ID is free  */
 392                         if (__test_and_set_bit(*restore_id, qpd->doorbell_bitmap))
 393                                 return -EINVAL;
 394
 395                         q->doorbell_id = *restore_id;
 396                 } else {
 397                         /* or reserve a free doorbell ID */
 398                         unsigned int found;
 399
 400                         found = find_first_zero_bit(qpd->doorbell_bitmap,
 401                                                     KFD_MAX_NUM_OF_QUEUES_PER_PROCESS);
 402                         if (found >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) {
 403                                 pr_debug("No doorbells available");
 404                                 return -EBUSY;
 405                         }
 406                         set_bit(found, qpd->doorbell_bitmap);
 407                         q->doorbell_id = found;
 408                 }
 409         }
 410
 411         q->properties.doorbell_off = amdgpu_doorbell_index_on_bar(dev->adev,
 412                                                                   qpd->proc_doorbells,
 413                                                                   q->doorbell_id,
 414                                                                   dev->kfd->device_info.doorbell_size);
 415         return 0;
 416 }
 417
 418 static void deallocate_doorbell(struct qcm_process_device *qpd,
 419                                 struct queue *q)
 420 {
 421         unsigned int old;
 422         struct kfd_node *dev = qpd->dqm->dev;
 423
 424         if (!KFD_IS_SOC15(dev) ||
 425             q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 426             q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
 427                 return;
 428
 429         old = test_and_clear_bit(q->doorbell_id, qpd->doorbell_bitmap);
 430         WARN_ON(!old);
 431 }
 432
 433 static void program_trap_handler_settings(struct device_queue_manager *dqm,
 434                                 struct qcm_process_device *qpd)
 435 {
 436         uint32_t xcc_mask = dqm->dev->xcc_mask;
 437         int xcc_id;
 438
 439         if (dqm->dev->kfd2kgd->program_trap_handler_settings)
 440                 for_each_inst(xcc_id, xcc_mask)
 441                         dqm->dev->kfd2kgd->program_trap_handler_settings(
 442                                 dqm->dev->adev, qpd->vmid, qpd->tba_addr,
 443                                 qpd->tma_addr, xcc_id);
 444 }
 445
 446 static int allocate_vmid(struct device_queue_manager *dqm,
 447                         struct qcm_process_device *qpd,
 448                         struct queue *q)
 449 {
 450         struct device *dev = dqm->dev->adev->dev;
 451         int allocated_vmid = -1, i;
 452
 453         for (i = dqm->dev->vm_info.first_vmid_kfd;
 454                         i <= dqm->dev->vm_info.last_vmid_kfd; i++) {
 455                 if (!dqm->vmid_pasid[i]) {
 456                         allocated_vmid = i;
 457                         break;
 458                 }
 459         }
 460
 461         if (allocated_vmid < 0) {
 462                 dev_err(dev, "no more vmid to allocate\n");
 463                 return -ENOSPC;
 464         }
 465
 466         pr_debug("vmid allocated: %d\n", allocated_vmid);
 467
 468         dqm->vmid_pasid[allocated_vmid] = q->process->pasid;
 469
 470         set_pasid_vmid_mapping(dqm, q->process->pasid, allocated_vmid);
 471
 472         qpd->vmid = allocated_vmid;
 473         q->properties.vmid = allocated_vmid;
 474
 475         program_sh_mem_settings(dqm, qpd);
 476
 477         if (KFD_IS_SOC15(dqm->dev) && dqm->dev->kfd->cwsr_enabled)
 478                 program_trap_handler_settings(dqm, qpd);
 479
 480         /* qpd->page_table_base is set earlier when register_process()
 481          * is called, i.e. when the first queue is created.
 482          */
 483         dqm->dev->kfd2kgd->set_vm_context_page_table_base(dqm->dev->adev,
 484                         qpd->vmid,
 485                         qpd->page_table_base);
 486         /* invalidate the VM context after pasid and vmid mapping is set up */
 487         kfd_flush_tlb(qpd_to_pdd(qpd), TLB_FLUSH_LEGACY);
 488
 489         if (dqm->dev->kfd2kgd->set_scratch_backing_va)
 490                 dqm->dev->kfd2kgd->set_scratch_backing_va(dqm->dev->adev,
 491                                 qpd->sh_hidden_private_base, qpd->vmid);
 492
 493         return 0;
 494 }
 495
 496 static int flush_texture_cache_nocpsch(struct kfd_node *kdev,
 497                                 struct qcm_process_device *qpd)
 498 {
 499         const struct packet_manager_funcs *pmf = qpd->dqm->packet_mgr.pmf;
 500         int ret;
 501
 502         if (!qpd->ib_kaddr)
 503                 return -ENOMEM;
 504
 505         ret = pmf->release_mem(qpd->ib_base, (uint32_t *)qpd->ib_kaddr);
 506         if (ret)
 507                 return ret;
 508
 509         return amdgpu_amdkfd_submit_ib(kdev->adev, KGD_ENGINE_MEC1, qpd->vmid,
 510                                 qpd->ib_base, (uint32_t *)qpd->ib_kaddr,
 511                                 pmf->release_mem_size / sizeof(uint32_t));
 512 }
 513
 514 static void deallocate_vmid(struct device_queue_manager *dqm,
 515                                 struct qcm_process_device *qpd,
 516                                 struct queue *q)
 517 {
 518         struct device *dev = dqm->dev->adev->dev;
 519
 520         /* On GFX v7, CP doesn't flush TC at dequeue */
 521         if (q->device->adev->asic_type == CHIP_HAWAII)
 522                 if (flush_texture_cache_nocpsch(q->device, qpd))
 523                         dev_err(dev, "Failed to flush TC\n");
 524
 525         kfd_flush_tlb(qpd_to_pdd(qpd), TLB_FLUSH_LEGACY);
 526
 527         /* Release the vmid mapping */
 528         set_pasid_vmid_mapping(dqm, 0, qpd->vmid);
 529         dqm->vmid_pasid[qpd->vmid] = 0;
 530
 531         qpd->vmid = 0;
 532         q->properties.vmid = 0;
 533 }
 534
 535 static int create_queue_nocpsch(struct device_queue_manager *dqm,
 536                                 struct queue *q,
 537                                 struct qcm_process_device *qpd,
 538                                 const struct kfd_criu_queue_priv_data *qd,
 539                                 const void *restore_mqd, const void *restore_ctl_stack)
 540 {
 541         struct mqd_manager *mqd_mgr;
 542         int retval;
 543
 544         dqm_lock(dqm);
 545
 546         if (dqm->total_queue_count >= max_num_of_queues_per_device) {
 547                 pr_warn("Can't create new usermode queue because %d queues were already created\n",
 548                                 dqm->total_queue_count);
 549                 retval = -EPERM;
 550                 goto out_unlock;
 551         }
 552
 553         if (list_empty(&qpd->queues_list)) {
 554                 retval = allocate_vmid(dqm, qpd, q);
 555                 if (retval)
 556                         goto out_unlock;
 557         }
 558         q->properties.vmid = qpd->vmid;
 559         /*
 560          * Eviction state logic: mark all queues as evicted, even ones
 561          * not currently active. Restoring inactive queues later only
 562          * updates the is_evicted flag but is a no-op otherwise.
 563          */
 564         q->properties.is_evicted = !!qpd->evicted;
 565
 566         q->properties.tba_addr = qpd->tba_addr;
 567         q->properties.tma_addr = qpd->tma_addr;
 568
 569         mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 570                         q->properties.type)];
 571         if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE) {
 572                 retval = allocate_hqd(dqm, q);
 573                 if (retval)
 574                         goto deallocate_vmid;
 575                 pr_debug("Loading mqd to hqd on pipe %d, queue %d\n",
 576                         q->pipe, q->queue);
 577         } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 578                 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
 579                 retval = allocate_sdma_queue(dqm, q, qd ? &qd->sdma_id : NULL);
 580                 if (retval)
 581                         goto deallocate_vmid;
 582                 dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
 583         }
 584
 585         retval = allocate_doorbell(qpd, q, qd ? &qd->doorbell_id : NULL);
 586         if (retval)
 587                 goto out_deallocate_hqd;
 588
 589         /* Temporarily release dqm lock to avoid a circular lock dependency */
 590         dqm_unlock(dqm);
 591         q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
 592         dqm_lock(dqm);
 593
 594         if (!q->mqd_mem_obj) {
 595                 retval = -ENOMEM;
 596                 goto out_deallocate_doorbell;
 597         }
 598
 599         if (qd)
 600                 mqd_mgr->restore_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, &q->gart_mqd_addr,
 601                                      &q->properties, restore_mqd, restore_ctl_stack,
 602                                      qd->ctl_stack_size);
 603         else
 604                 mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
 605                                         &q->gart_mqd_addr, &q->properties);
 606
 607         if (q->properties.is_active) {
 608                 if (!dqm->sched_running) {
 609                         WARN_ONCE(1, "Load non-HWS mqd while stopped\n");
 610                         goto add_queue_to_list;
 611                 }
 612
 613                 if (WARN(q->process->mm != current->mm,
 614                                         "should only run in user thread"))
 615                         retval = -EFAULT;
 616                 else
 617                         retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
 618                                         q->queue, &q->properties, current->mm);
 619                 if (retval)
 620                         goto out_free_mqd;
 621         }
 622
 623 add_queue_to_list:
 624         list_add(&q->list, &qpd->queues_list);
 625         qpd->queue_count++;
 626         if (q->properties.is_active)
 627                 increment_queue_count(dqm, qpd, q);
 628
 629         /*
 630          * Unconditionally increment this counter, regardless of the queue's
 631          * type or whether the queue is active.
 632          */
 633         dqm->total_queue_count++;
 634         pr_debug("Total of %d queues are accountable so far\n",
 635                         dqm->total_queue_count);
 636         goto out_unlock;
 637
 638 out_free_mqd:
 639         mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 640 out_deallocate_doorbell:
 641         deallocate_doorbell(qpd, q);
 642 out_deallocate_hqd:
 643         if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE)
 644                 deallocate_hqd(dqm, q);
 645         else if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 646                 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
 647                 deallocate_sdma_queue(dqm, q);
 648 deallocate_vmid:
 649         if (list_empty(&qpd->queues_list))
 650                 deallocate_vmid(dqm, qpd, q);
 651 out_unlock:
 652         dqm_unlock(dqm);
 653         return retval;
 654 }
 655
 656 static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q)
 657 {
 658         bool set;
 659         int pipe, bit, i;
 660
 661         set = false;
 662
 663         for (pipe = dqm->next_pipe_to_allocate, i = 0;
 664                         i < get_pipes_per_mec(dqm);
 665                         pipe = ((pipe + 1) % get_pipes_per_mec(dqm)), ++i) {
 666
 667                 if (!is_pipe_enabled(dqm, 0, pipe))
 668                         continue;
 669
 670                 if (dqm->allocated_queues[pipe] != 0) {
 671                         bit = ffs(dqm->allocated_queues[pipe]) - 1;
 672                         dqm->allocated_queues[pipe] &= ~(1 << bit);
 673                         q->pipe = pipe;
 674                         q->queue = bit;
 675                         set = true;
 676                         break;
 677                 }
 678         }
 679
 680         if (!set)
 681                 return -EBUSY;
 682
 683         pr_debug("hqd slot - pipe %d, queue %d\n", q->pipe, q->queue);
 684         /* horizontal hqd allocation */
 685         dqm->next_pipe_to_allocate = (pipe + 1) % get_pipes_per_mec(dqm);
 686
 687         return 0;
 688 }
 689
 690 static inline void deallocate_hqd(struct device_queue_manager *dqm,
 691                                 struct queue *q)
 692 {
 693         dqm->allocated_queues[q->pipe] |= (1 << q->queue);
 694 }
 695
 696 #define SQ_IND_CMD_CMD_KILL             0x00000003
 697 #define SQ_IND_CMD_MODE_BROADCAST       0x00000001
 698
 699 static int dbgdev_wave_reset_wavefronts(struct kfd_node *dev, struct kfd_process *p)
 700 {
 701         int status = 0;
 702         unsigned int vmid;
 703         uint16_t queried_pasid;
 704         union SQ_CMD_BITS reg_sq_cmd;
 705         union GRBM_GFX_INDEX_BITS reg_gfx_index;
 706         struct kfd_process_device *pdd;
 707         int first_vmid_to_scan = dev->vm_info.first_vmid_kfd;
 708         int last_vmid_to_scan = dev->vm_info.last_vmid_kfd;
 709         uint32_t xcc_mask = dev->xcc_mask;
 710         int xcc_id;
 711
 712         reg_sq_cmd.u32All = 0;
 713         reg_gfx_index.u32All = 0;
 714
 715         pr_debug("Killing all process wavefronts\n");
 716
 717         if (!dev->kfd2kgd->get_atc_vmid_pasid_mapping_info) {
 718                 dev_err(dev->adev->dev, "no vmid pasid mapping supported\n");
 719                 return -EOPNOTSUPP;
 720         }
 721
 722         /* Scan all registers in the range ATC_VMID8_PASID_MAPPING ..
 723          * ATC_VMID15_PASID_MAPPING
 724          * to check which VMID the current process is mapped to.
 725          */
 726
 727         for (vmid = first_vmid_to_scan; vmid <= last_vmid_to_scan; vmid++) {
 728                 status = dev->kfd2kgd->get_atc_vmid_pasid_mapping_info
 729                                 (dev->adev, vmid, &queried_pasid);
 730
 731                 if (status && queried_pasid == p->pasid) {
 732                         pr_debug("Killing wave fronts of vmid %d and pasid 0x%x\n",
 733                                         vmid, p->pasid);
 734                         break;
 735                 }
 736         }
 737
 738         if (vmid > last_vmid_to_scan) {
 739                 dev_err(dev->adev->dev, "Didn't find vmid for pasid 0x%x\n", p->pasid);
 740                 return -EFAULT;
 741         }
 742
 743         /* taking the VMID for that process on the safe way using PDD */
 744         pdd = kfd_get_process_device_data(dev, p);
 745         if (!pdd)
 746                 return -EFAULT;
 747
 748         reg_gfx_index.bits.sh_broadcast_writes = 1;
 749         reg_gfx_index.bits.se_broadcast_writes = 1;
 750         reg_gfx_index.bits.instance_broadcast_writes = 1;
 751         reg_sq_cmd.bits.mode = SQ_IND_CMD_MODE_BROADCAST;
 752         reg_sq_cmd.bits.cmd = SQ_IND_CMD_CMD_KILL;
 753         reg_sq_cmd.bits.vm_id = vmid;
 754
 755         for_each_inst(xcc_id, xcc_mask)
 756                 dev->kfd2kgd->wave_control_execute(
 757                         dev->adev, reg_gfx_index.u32All,
 758                         reg_sq_cmd.u32All, xcc_id);
 759
 760         return 0;
 761 }
 762
 763 /* Access to DQM has to be locked before calling destroy_queue_nocpsch_locked
 764  * to avoid asynchronized access
 765  */
 766 static int destroy_queue_nocpsch_locked(struct device_queue_manager *dqm,
 767                                 struct qcm_process_device *qpd,
 768                                 struct queue *q)
 769 {
 770         int retval;
 771         struct mqd_manager *mqd_mgr;
 772
 773         mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 774                         q->properties.type)];
 775
 776         if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE)
 777                 deallocate_hqd(dqm, q);
 778         else if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
 779                 deallocate_sdma_queue(dqm, q);
 780         else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
 781                 deallocate_sdma_queue(dqm, q);
 782         else {
 783                 pr_debug("q->properties.type %d is invalid\n",
 784                                 q->properties.type);
 785                 return -EINVAL;
 786         }
 787         dqm->total_queue_count--;
 788
 789         deallocate_doorbell(qpd, q);
 790
 791         if (!dqm->sched_running) {
 792                 WARN_ONCE(1, "Destroy non-HWS queue while stopped\n");
 793                 return 0;
 794         }
 795
 796         retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd,
 797                                 KFD_PREEMPT_TYPE_WAVEFRONT_RESET,
 798                                 KFD_UNMAP_LATENCY_MS,
 799                                 q->pipe, q->queue);
 800         if (retval == -ETIME)
 801                 qpd->reset_wavefronts = true;
 802
 803         list_del(&q->list);
 804         if (list_empty(&qpd->queues_list)) {
 805                 if (qpd->reset_wavefronts) {
 806                         pr_warn("Resetting wave fronts (nocpsch) on dev %p\n",
 807                                         dqm->dev);
 808                         /* dbgdev_wave_reset_wavefronts has to be called before
 809                          * deallocate_vmid(), i.e. when vmid is still in use.
 810                          */
 811                         dbgdev_wave_reset_wavefronts(dqm->dev,
 812                                         qpd->pqm->process);
 813                         qpd->reset_wavefronts = false;
 814                 }
 815
 816                 deallocate_vmid(dqm, qpd, q);
 817         }
 818         qpd->queue_count--;
 819         if (q->properties.is_active)
 820                 decrement_queue_count(dqm, qpd, q);
 821
 822         return retval;
 823 }
 824
 825 static int destroy_queue_nocpsch(struct device_queue_manager *dqm,
 826                                 struct qcm_process_device *qpd,
 827                                 struct queue *q)
 828 {
 829         int retval;
 830         uint64_t sdma_val = 0;
 831         struct device *dev = dqm->dev->adev->dev;
 832         struct kfd_process_device *pdd = qpd_to_pdd(qpd);
 833         struct mqd_manager *mqd_mgr =
 834                 dqm->mqd_mgrs[get_mqd_type_from_queue_type(q->properties.type)];
 835
 836         /* Get the SDMA queue stats */
 837         if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) ||
 838             (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
 839                 retval = read_sdma_queue_counter((uint64_t __user *)q->properties.read_ptr,
 840                                                         &sdma_val);
 841                 if (retval)
 842                         dev_err(dev, "Failed to read SDMA queue counter for queue: %d\n",
 843                                 q->properties.queue_id);
 844         }
 845
 846         dqm_lock(dqm);
 847         retval = destroy_queue_nocpsch_locked(dqm, qpd, q);
 848         if (!retval)
 849                 pdd->sdma_past_activity_counter += sdma_val;
 850         dqm_unlock(dqm);
 851
 852         mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 853
 854         return retval;
 855 }
 856
 857 static int update_queue(struct device_queue_manager *dqm, struct queue *q,
 858                         struct mqd_update_info *minfo)
 859 {
 860         int retval = 0;
 861         struct device *dev = dqm->dev->adev->dev;
 862         struct mqd_manager *mqd_mgr;
 863         struct kfd_process_device *pdd;
 864         bool prev_active = false;
 865
 866         dqm_lock(dqm);
 867         pdd = kfd_get_process_device_data(q->device, q->process);
 868         if (!pdd) {
 869                 retval = -ENODEV;
 870                 goto out_unlock;
 871         }
 872         mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 873                         q->properties.type)];
 874
 875         /* Save previous activity state for counters */
 876         prev_active = q->properties.is_active;
 877
 878         /* Make sure the queue is unmapped before updating the MQD */
 879         if (dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) {
 880                 if (!dqm->dev->kfd->shared_resources.enable_mes)
 881                         retval = unmap_queues_cpsch(dqm,
 882                                                     KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD, false);
 883                 else if (prev_active)
 884                         retval = remove_queue_mes(dqm, q, &pdd->qpd);
 885
 886                 if (retval) {
 887                         dev_err(dev, "unmap queue failed\n");
 888                         goto out_unlock;
 889                 }
 890         } else if (prev_active &&
 891                    (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
 892                     q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 893                     q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
 894
 895                 if (!dqm->sched_running) {
 896                         WARN_ONCE(1, "Update non-HWS queue while stopped\n");
 897                         goto out_unlock;
 898                 }
 899
 900                 retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd,
 901                                 (dqm->dev->kfd->cwsr_enabled ?
 902                                  KFD_PREEMPT_TYPE_WAVEFRONT_SAVE :
 903                                  KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN),
 904                                 KFD_UNMAP_LATENCY_MS, q->pipe, q->queue);
 905                 if (retval) {
 906                         dev_err(dev, "destroy mqd failed\n");
 907                         goto out_unlock;
 908                 }
 909         }
 910
 911         mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties, minfo);
 912
 913         /*
 914          * check active state vs. the previous state and modify
 915          * counter accordingly. map_queues_cpsch uses the
 916          * dqm->active_queue_count to determine whether a new runlist must be
 917          * uploaded.
 918          */
 919         if (q->properties.is_active && !prev_active) {
 920                 increment_queue_count(dqm, &pdd->qpd, q);
 921         } else if (!q->properties.is_active && prev_active) {
 922                 decrement_queue_count(dqm, &pdd->qpd, q);
 923         } else if (q->gws && !q->properties.is_gws) {
 924                 if (q->properties.is_active) {
 925                         dqm->gws_queue_count++;
 926                         pdd->qpd.mapped_gws_queue = true;
 927                 }
 928                 q->properties.is_gws = true;
 929         } else if (!q->gws && q->properties.is_gws) {
 930                 if (q->properties.is_active) {
 931                         dqm->gws_queue_count--;
 932                         pdd->qpd.mapped_gws_queue = false;
 933                 }
 934                 q->properties.is_gws = false;
 935         }
 936
 937         if (dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) {
 938                 if (!dqm->dev->kfd->shared_resources.enable_mes)
 939                         retval = map_queues_cpsch(dqm);
 940                 else if (q->properties.is_active)
 941                         retval = add_queue_mes(dqm, q, &pdd->qpd);
 942         } else if (q->properties.is_active &&
 943                  (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
 944                   q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 945                   q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
 946                 if (WARN(q->process->mm != current->mm,
 947                          "should only run in user thread"))
 948                         retval = -EFAULT;
 949                 else
 950                         retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd,
 951                                                    q->pipe, q->queue,
 952                                                    &q->properties, current->mm);
 953         }
 954
 955 out_unlock:
 956         dqm_unlock(dqm);
 957         return retval;
 958 }
 959
 960 /* suspend_single_queue does not lock the dqm like the
 961  * evict_process_queues_cpsch or evict_process_queues_nocpsch. You should
 962  * lock the dqm before calling, and unlock after calling.
 963  *
 964  * The reason we don't lock the dqm is because this function may be
 965  * called on multiple queues in a loop, so rather than locking/unlocking
 966  * multiple times, we will just keep the dqm locked for all of the calls.
 967  */
 968 static int suspend_single_queue(struct device_queue_manager *dqm,
 969                                       struct kfd_process_device *pdd,
 970                                       struct queue *q)
 971 {
 972         bool is_new;
 973
 974         if (q->properties.is_suspended)
 975                 return 0;
 976
 977         pr_debug("Suspending PASID %u queue [%i]\n",
 978                         pdd->process->pasid,
 979                         q->properties.queue_id);
 980
 981         is_new = q->properties.exception_status & KFD_EC_MASK(EC_QUEUE_NEW);
 982
 983         if (is_new || q->properties.is_being_destroyed) {
 984                 pr_debug("Suspend: skip %s queue id %i\n",
 985                                 is_new ? "new" : "destroyed",
 986                                 q->properties.queue_id);
 987                 return -EBUSY;
 988         }
 989
 990         q->properties.is_suspended = true;
 991         if (q->properties.is_active) {
 992                 if (dqm->dev->kfd->shared_resources.enable_mes) {
 993                         int r = remove_queue_mes(dqm, q, &pdd->qpd);
 994
 995                         if (r)
 996                                 return r;
 997                 }
 998
 999                 decrement_queue_count(dqm, &pdd->qpd, q);
1000                 q->properties.is_active = false;
1001         }
1002
1003         return 0;
1004 }
1005
1006 /* resume_single_queue does not lock the dqm like the functions
1007  * restore_process_queues_cpsch or restore_process_queues_nocpsch. You should
1008  * lock the dqm before calling, and unlock after calling.
1009  *
1010  * The reason we don't lock the dqm is because this function may be
1011  * called on multiple queues in a loop, so rather than locking/unlocking
1012  * multiple times, we will just keep the dqm locked for all of the calls.
1013  */
1014 static int resume_single_queue(struct device_queue_manager *dqm,
1015                                       struct qcm_process_device *qpd,
1016                                       struct queue *q)
1017 {
1018         struct kfd_process_device *pdd;
1019
1020         if (!q->properties.is_suspended)
1021                 return 0;
1022
1023         pdd = qpd_to_pdd(qpd);
1024
1025         pr_debug("Restoring from suspend PASID %u queue [%i]\n",
1026                             pdd->process->pasid,
1027                             q->properties.queue_id);
1028
1029         q->properties.is_suspended = false;
1030
1031         if (QUEUE_IS_ACTIVE(q->properties)) {
1032                 if (dqm->dev->kfd->shared_resources.enable_mes) {
1033                         int r = add_queue_mes(dqm, q, &pdd->qpd);
1034
1035                         if (r)
1036                                 return r;
1037                 }
1038
1039                 q->properties.is_active = true;
1040                 increment_queue_count(dqm, qpd, q);
1041         }
1042
1043         return 0;
1044 }
1045
1046 static int evict_process_queues_nocpsch(struct device_queue_manager *dqm,
1047                                         struct qcm_process_device *qpd)
1048 {
1049         struct queue *q;
1050         struct mqd_manager *mqd_mgr;
1051         struct kfd_process_device *pdd;
1052         int retval, ret = 0;
1053
1054         dqm_lock(dqm);
1055         if (qpd->evicted++ > 0) /* already evicted, do nothing */
1056                 goto out;
1057
1058         pdd = qpd_to_pdd(qpd);
1059         pr_debug_ratelimited("Evicting PASID 0x%x queues\n",
1060                             pdd->process->pasid);
1061
1062         pdd->last_evict_timestamp = get_jiffies_64();
1063         /* Mark all queues as evicted. Deactivate all active queues on
1064          * the qpd.
1065          */
1066         list_for_each_entry(q, &qpd->queues_list, list) {
1067                 q->properties.is_evicted = true;
1068                 if (!q->properties.is_active)
1069                         continue;
1070
1071                 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
1072                                 q->properties.type)];
1073                 q->properties.is_active = false;
1074                 decrement_queue_count(dqm, qpd, q);
1075
1076                 if (WARN_ONCE(!dqm->sched_running, "Evict when stopped\n"))
1077                         continue;
1078
1079                 retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd,
1080                                 (dqm->dev->kfd->cwsr_enabled ?
1081                                  KFD_PREEMPT_TYPE_WAVEFRONT_SAVE :
1082                                  KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN),
1083                                 KFD_UNMAP_LATENCY_MS, q->pipe, q->queue);
1084                 if (retval && !ret)
1085                         /* Return the first error, but keep going to
1086                          * maintain a consistent eviction state
1087                          */
1088                         ret = retval;
1089         }
1090
1091 out:
1092         dqm_unlock(dqm);
1093         return ret;
1094 }
1095
1096 static int evict_process_queues_cpsch(struct device_queue_manager *dqm,
1097                                       struct qcm_process_device *qpd)
1098 {
1099         struct queue *q;
1100         struct device *dev = dqm->dev->adev->dev;
1101         struct kfd_process_device *pdd;
1102         int retval = 0;
1103
1104         dqm_lock(dqm);
1105         if (qpd->evicted++ > 0) /* already evicted, do nothing */
1106                 goto out;
1107
1108         pdd = qpd_to_pdd(qpd);
1109
1110         /* The debugger creates processes that temporarily have not acquired
1111          * all VMs for all devices and has no VMs itself.
1112          * Skip queue eviction on process eviction.
1113          */
1114         if (!pdd->drm_priv)
1115                 goto out;
1116
1117         pr_debug_ratelimited("Evicting PASID 0x%x queues\n",
1118                             pdd->process->pasid);
1119
1120         /* Mark all queues as evicted. Deactivate all active queues on
1121          * the qpd.
1122          */
1123         list_for_each_entry(q, &qpd->queues_list, list) {
1124                 q->properties.is_evicted = true;
1125                 if (!q->properties.is_active)
1126                         continue;
1127
1128                 q->properties.is_active = false;
1129                 decrement_queue_count(dqm, qpd, q);
1130
1131                 if (dqm->dev->kfd->shared_resources.enable_mes) {
1132                         retval = remove_queue_mes(dqm, q, qpd);
1133                         if (retval) {
1134                                 dev_err(dev, "Failed to evict queue %d\n",
1135                                         q->properties.queue_id);
1136                                 goto out;
1137                         }
1138                 }
1139         }
1140         pdd->last_evict_timestamp = get_jiffies_64();
1141         if (!dqm->dev->kfd->shared_resources.enable_mes)
1142                 retval = execute_queues_cpsch(dqm,
1143                                               qpd->is_debug ?
1144                                               KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES :
1145                                               KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0,
1146                                               USE_DEFAULT_GRACE_PERIOD);
1147
1148 out:
1149         dqm_unlock(dqm);
1150         return retval;
1151 }
1152
1153 static int restore_process_queues_nocpsch(struct device_queue_manager *dqm,
1154                                           struct qcm_process_device *qpd)
1155 {
1156         struct mm_struct *mm = NULL;
1157         struct queue *q;
1158         struct mqd_manager *mqd_mgr;
1159         struct kfd_process_device *pdd;
1160         uint64_t pd_base;
1161         uint64_t eviction_duration;
1162         int retval, ret = 0;
1163
1164         pdd = qpd_to_pdd(qpd);
1165         /* Retrieve PD base */
1166         pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->drm_priv);
1167
1168         dqm_lock(dqm);
1169         if (WARN_ON_ONCE(!qpd->evicted)) /* already restored, do nothing */
1170                 goto out;
1171         if (qpd->evicted > 1) { /* ref count still > 0, decrement & quit */
1172                 qpd->evicted--;
1173                 goto out;
1174         }
1175
1176         pr_debug_ratelimited("Restoring PASID 0x%x queues\n",
1177                             pdd->process->pasid);
1178
1179         /* Update PD Base in QPD */
1180         qpd->page_table_base = pd_base;
1181         pr_debug("Updated PD address to 0x%llx\n", pd_base);
1182
1183         if (!list_empty(&qpd->queues_list)) {
1184                 dqm->dev->kfd2kgd->set_vm_context_page_table_base(
1185                                 dqm->dev->adev,
1186                                 qpd->vmid,
1187                                 qpd->page_table_base);
1188                 kfd_flush_tlb(pdd, TLB_FLUSH_LEGACY);
1189         }
1190
1191         /* Take a safe reference to the mm_struct, which may otherwise
1192          * disappear even while the kfd_process is still referenced.
1193          */
1194         mm = get_task_mm(pdd->process->lead_thread);
1195         if (!mm) {
1196                 ret = -EFAULT;
1197                 goto out;
1198         }
1199
1200         /* Remove the eviction flags. Activate queues that are not
1201          * inactive for other reasons.
1202          */
1203         list_for_each_entry(q, &qpd->queues_list, list) {
1204                 q->properties.is_evicted = false;
1205                 if (!QUEUE_IS_ACTIVE(q->properties))
1206                         continue;
1207
1208                 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
1209                                 q->properties.type)];
1210                 q->properties.is_active = true;
1211                 increment_queue_count(dqm, qpd, q);
1212
1213                 if (WARN_ONCE(!dqm->sched_running, "Restore when stopped\n"))
1214                         continue;
1215
1216                 retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
1217                                        q->queue, &q->properties, mm);
1218                 if (retval && !ret)
1219                         /* Return the first error, but keep going to
1220                          * maintain a consistent eviction state
1221                          */
1222                         ret = retval;
1223         }
1224         qpd->evicted = 0;
1225         eviction_duration = get_jiffies_64() - pdd->last_evict_timestamp;
1226         atomic64_add(eviction_duration, &pdd->evict_duration_counter);
1227 out:
1228         if (mm)
1229                 mmput(mm);
1230         dqm_unlock(dqm);
1231         return ret;
1232 }
1233
1234 static int restore_process_queues_cpsch(struct device_queue_manager *dqm,
1235                                         struct qcm_process_device *qpd)
1236 {
1237         struct queue *q;
1238         struct device *dev = dqm->dev->adev->dev;
1239         struct kfd_process_device *pdd;
1240         uint64_t eviction_duration;
1241         int retval = 0;
1242
1243         pdd = qpd_to_pdd(qpd);
1244
1245         dqm_lock(dqm);
1246         if (WARN_ON_ONCE(!qpd->evicted)) /* already restored, do nothing */
1247                 goto out;
1248         if (qpd->evicted > 1) { /* ref count still > 0, decrement & quit */
1249                 qpd->evicted--;
1250                 goto out;
1251         }
1252
1253         /* The debugger creates processes that temporarily have not acquired
1254          * all VMs for all devices and has no VMs itself.
1255          * Skip queue restore on process restore.
1256          */
1257         if (!pdd->drm_priv)
1258                 goto vm_not_acquired;
1259
1260         pr_debug_ratelimited("Restoring PASID 0x%x queues\n",
1261                             pdd->process->pasid);
1262
1263         /* Update PD Base in QPD */
1264         qpd->page_table_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->drm_priv);
1265         pr_debug("Updated PD address to 0x%llx\n", qpd->page_table_base);
1266
1267         /* activate all active queues on the qpd */
1268         list_for_each_entry(q, &qpd->queues_list, list) {
1269                 q->properties.is_evicted = false;
1270                 if (!QUEUE_IS_ACTIVE(q->properties))
1271                         continue;
1272
1273                 q->properties.is_active = true;
1274                 increment_queue_count(dqm, &pdd->qpd, q);
1275
1276                 if (dqm->dev->kfd->shared_resources.enable_mes) {
1277                         retval = add_queue_mes(dqm, q, qpd);
1278                         if (retval) {
1279                                 dev_err(dev, "Failed to restore queue %d\n",
1280                                         q->properties.queue_id);
1281                                 goto out;
1282                         }
1283                 }
1284         }
1285         if (!dqm->dev->kfd->shared_resources.enable_mes)
1286                 retval = execute_queues_cpsch(dqm,
1287                                               KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD);
1288         eviction_duration = get_jiffies_64() - pdd->last_evict_timestamp;
1289         atomic64_add(eviction_duration, &pdd->evict_duration_counter);
1290 vm_not_acquired:
1291         qpd->evicted = 0;
1292 out:
1293         dqm_unlock(dqm);
1294         return retval;
1295 }
1296
1297 static int register_process(struct device_queue_manager *dqm,
1298                                         struct qcm_process_device *qpd)
1299 {
1300         struct device_process_node *n;
1301         struct kfd_process_device *pdd;
1302         uint64_t pd_base;
1303         int retval;
1304
1305         n = kzalloc(sizeof(*n), GFP_KERNEL);
1306         if (!n)
1307                 return -ENOMEM;
1308
1309         n->qpd = qpd;
1310
1311         pdd = qpd_to_pdd(qpd);
1312         /* Retrieve PD base */
1313         pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->drm_priv);
1314
1315         dqm_lock(dqm);
1316         list_add(&n->list, &dqm->queues);
1317
1318         /* Update PD Base in QPD */
1319         qpd->page_table_base = pd_base;
1320         pr_debug("Updated PD address to 0x%llx\n", pd_base);
1321
1322         retval = dqm->asic_ops.update_qpd(dqm, qpd);
1323
1324         dqm->processes_count++;
1325
1326         dqm_unlock(dqm);
1327
1328         /* Outside the DQM lock because under the DQM lock we can't do
1329          * reclaim or take other locks that others hold while reclaiming.
1330          */
1331         kfd_inc_compute_active(dqm->dev);
1332
1333         return retval;
1334 }
1335
1336 static int unregister_process(struct device_queue_manager *dqm,
1337                                         struct qcm_process_device *qpd)
1338 {
1339         int retval;
1340         struct device_process_node *cur, *next;
1341
1342         pr_debug("qpd->queues_list is %s\n",
1343                         list_empty(&qpd->queues_list) ? "empty" : "not empty");
1344
1345         retval = 0;
1346         dqm_lock(dqm);
1347
1348         list_for_each_entry_safe(cur, next, &dqm->queues, list) {
1349                 if (qpd == cur->qpd) {
1350                         list_del(&cur->list);
1351                         kfree(cur);
1352                         dqm->processes_count--;
1353                         goto out;
1354                 }
1355         }
1356         /* qpd not found in dqm list */
1357         retval = 1;
1358 out:
1359         dqm_unlock(dqm);
1360
1361         /* Outside the DQM lock because under the DQM lock we can't do
1362          * reclaim or take other locks that others hold while reclaiming.
1363          */
1364         if (!retval)
1365                 kfd_dec_compute_active(dqm->dev);
1366
1367         return retval;
1368 }
1369
1370 static int
1371 set_pasid_vmid_mapping(struct device_queue_manager *dqm, u32 pasid,
1372                         unsigned int vmid)
1373 {
1374         uint32_t xcc_mask = dqm->dev->xcc_mask;
1375         int xcc_id, ret;
1376
1377         for_each_inst(xcc_id, xcc_mask) {
1378                 ret = dqm->dev->kfd2kgd->set_pasid_vmid_mapping(
1379                         dqm->dev->adev, pasid, vmid, xcc_id);
1380                 if (ret)
1381                         break;
1382         }
1383
1384         return ret;
1385 }
1386
1387 static void init_interrupts(struct device_queue_manager *dqm)
1388 {
1389         uint32_t xcc_mask = dqm->dev->xcc_mask;
1390         unsigned int i, xcc_id;
1391
1392         for_each_inst(xcc_id, xcc_mask) {
1393                 for (i = 0 ; i < get_pipes_per_mec(dqm) ; i++) {
1394                         if (is_pipe_enabled(dqm, 0, i)) {
1395                                 dqm->dev->kfd2kgd->init_interrupts(
1396                                         dqm->dev->adev, i, xcc_id);
1397                         }
1398                 }
1399         }
1400 }
1401
1402 static int initialize_nocpsch(struct device_queue_manager *dqm)
1403 {
1404         int pipe, queue;
1405
1406         pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm));
1407
1408         dqm->allocated_queues = kcalloc(get_pipes_per_mec(dqm),
1409                                         sizeof(unsigned int), GFP_KERNEL);
1410         if (!dqm->allocated_queues)
1411                 return -ENOMEM;
1412
1413         mutex_init(&dqm->lock_hidden);
1414         INIT_LIST_HEAD(&dqm->queues);
1415         dqm->active_queue_count = dqm->next_pipe_to_allocate = 0;
1416         dqm->active_cp_queue_count = 0;
1417         dqm->gws_queue_count = 0;
1418
1419         for (pipe = 0; pipe < get_pipes_per_mec(dqm); pipe++) {
1420                 int pipe_offset = pipe * get_queues_per_pipe(dqm);
1421
1422                 for (queue = 0; queue < get_queues_per_pipe(dqm); queue++)
1423                         if (test_bit(pipe_offset + queue,
1424                                      dqm->dev->kfd->shared_resources.cp_queue_bitmap))
1425                                 dqm->allocated_queues[pipe] |= 1 << queue;
1426         }
1427
1428         memset(dqm->vmid_pasid, 0, sizeof(dqm->vmid_pasid));
1429
1430         init_sdma_bitmaps(dqm);
1431
1432         return 0;
1433 }
1434
1435 static void uninitialize(struct device_queue_manager *dqm)
1436 {
1437         int i;
1438
1439         WARN_ON(dqm->active_queue_count > 0 || dqm->processes_count > 0);
1440
1441         kfree(dqm->allocated_queues);
1442         for (i = 0 ; i < KFD_MQD_TYPE_MAX ; i++)
1443                 kfree(dqm->mqd_mgrs[i]);
1444         mutex_destroy(&dqm->lock_hidden);
1445 }
1446
1447 static int start_nocpsch(struct device_queue_manager *dqm)
1448 {
1449         int r = 0;
1450
1451         pr_info("SW scheduler is used");
1452         init_interrupts(dqm);
1453
1454         if (dqm->dev->adev->asic_type == CHIP_HAWAII)
1455                 r = pm_init(&dqm->packet_mgr, dqm);
1456         if (!r)
1457                 dqm->sched_running = true;
1458
1459         return r;
1460 }
1461
1462 static int stop_nocpsch(struct device_queue_manager *dqm)
1463 {
1464         dqm_lock(dqm);
1465         if (!dqm->sched_running) {
1466                 dqm_unlock(dqm);
1467                 return 0;
1468         }
1469
1470         if (dqm->dev->adev->asic_type == CHIP_HAWAII)
1471                 pm_uninit(&dqm->packet_mgr, false);
1472         dqm->sched_running = false;
1473         dqm_unlock(dqm);
1474
1475         return 0;
1476 }
1477
1478 static void pre_reset(struct device_queue_manager *dqm)
1479 {
1480         dqm_lock(dqm);
1481         dqm->is_resetting = true;
1482         dqm_unlock(dqm);
1483 }
1484
1485 static int allocate_sdma_queue(struct device_queue_manager *dqm,
1486                                 struct queue *q, const uint32_t *restore_sdma_id)
1487 {
1488         struct device *dev = dqm->dev->adev->dev;
1489         int bit;
1490
1491         if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
1492                 if (bitmap_empty(dqm->sdma_bitmap, KFD_MAX_SDMA_QUEUES)) {
1493                         dev_err(dev, "No more SDMA queue to allocate\n");
1494                         return -ENOMEM;
1495                 }
1496
1497                 if (restore_sdma_id) {
1498                         /* Re-use existing sdma_id */
1499                         if (!test_bit(*restore_sdma_id, dqm->sdma_bitmap)) {
1500                                 dev_err(dev, "SDMA queue already in use\n");
1501                                 return -EBUSY;
1502                         }
1503                         clear_bit(*restore_sdma_id, dqm->sdma_bitmap);
1504                         q->sdma_id = *restore_sdma_id;
1505                 } else {
1506                         /* Find first available sdma_id */
1507                         bit = find_first_bit(dqm->sdma_bitmap,
1508                                              get_num_sdma_queues(dqm));
1509                         clear_bit(bit, dqm->sdma_bitmap);
1510                         q->sdma_id = bit;
1511                 }
1512
1513                 q->properties.sdma_engine_id =
1514                         q->sdma_id % kfd_get_num_sdma_engines(dqm->dev);
1515                 q->properties.sdma_queue_id = q->sdma_id /
1516                                 kfd_get_num_sdma_engines(dqm->dev);
1517         } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1518                 if (bitmap_empty(dqm->xgmi_sdma_bitmap, KFD_MAX_SDMA_QUEUES)) {
1519                         dev_err(dev, "No more XGMI SDMA queue to allocate\n");
1520                         return -ENOMEM;
1521                 }
1522                 if (restore_sdma_id) {
1523                         /* Re-use existing sdma_id */
1524                         if (!test_bit(*restore_sdma_id, dqm->xgmi_sdma_bitmap)) {
1525                                 dev_err(dev, "SDMA queue already in use\n");
1526                                 return -EBUSY;
1527                         }
1528                         clear_bit(*restore_sdma_id, dqm->xgmi_sdma_bitmap);
1529                         q->sdma_id = *restore_sdma_id;
1530                 } else {
1531                         bit = find_first_bit(dqm->xgmi_sdma_bitmap,
1532                                              get_num_xgmi_sdma_queues(dqm));
1533                         clear_bit(bit, dqm->xgmi_sdma_bitmap);
1534                         q->sdma_id = bit;
1535                 }
1536                 /* sdma_engine_id is sdma id including
1537                  * both PCIe-optimized SDMAs and XGMI-
1538                  * optimized SDMAs. The calculation below
1539                  * assumes the first N engines are always
1540                  * PCIe-optimized ones
1541                  */
1542                 q->properties.sdma_engine_id =
1543                         kfd_get_num_sdma_engines(dqm->dev) +
1544                         q->sdma_id % kfd_get_num_xgmi_sdma_engines(dqm->dev);
1545                 q->properties.sdma_queue_id = q->sdma_id /
1546                         kfd_get_num_xgmi_sdma_engines(dqm->dev);
1547         }
1548
1549         pr_debug("SDMA engine id: %d\n", q->properties.sdma_engine_id);
1550         pr_debug("SDMA queue id: %d\n", q->properties.sdma_queue_id);
1551
1552         return 0;
1553 }
1554
1555 static void deallocate_sdma_queue(struct device_queue_manager *dqm,
1556                                 struct queue *q)
1557 {
1558         if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
1559                 if (q->sdma_id >= get_num_sdma_queues(dqm))
1560                         return;
1561                 set_bit(q->sdma_id, dqm->sdma_bitmap);
1562         } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1563                 if (q->sdma_id >= get_num_xgmi_sdma_queues(dqm))
1564                         return;
1565                 set_bit(q->sdma_id, dqm->xgmi_sdma_bitmap);
1566         }
1567 }
1568
1569 /*
1570  * Device Queue Manager implementation for cp scheduler
1571  */
1572
1573 static int set_sched_resources(struct device_queue_manager *dqm)
1574 {
1575         int i, mec;
1576         struct scheduling_resources res;
1577         struct device *dev = dqm->dev->adev->dev;
1578
1579         res.vmid_mask = dqm->dev->compute_vmid_bitmap;
1580
1581         res.queue_mask = 0;
1582         for (i = 0; i < AMDGPU_MAX_QUEUES; ++i) {
1583                 mec = (i / dqm->dev->kfd->shared_resources.num_queue_per_pipe)
1584                         / dqm->dev->kfd->shared_resources.num_pipe_per_mec;
1585
1586                 if (!test_bit(i, dqm->dev->kfd->shared_resources.cp_queue_bitmap))
1587                         continue;
1588
1589                 /* only acquire queues from the first MEC */
1590                 if (mec > 0)
1591                         continue;
1592
1593                 /* This situation may be hit in the future if a new HW
1594                  * generation exposes more than 64 queues. If so, the
1595                  * definition of res.queue_mask needs updating
1596                  */
1597                 if (WARN_ON(i >= (sizeof(res.queue_mask)*8))) {
1598                         dev_err(dev, "Invalid queue enabled by amdgpu: %d\n", i);
1599                         break;
1600                 }
1601
1602                 res.queue_mask |= 1ull
1603                         << amdgpu_queue_mask_bit_to_set_resource_bit(
1604                                 dqm->dev->adev, i);
1605         }
1606         res.gws_mask = ~0ull;
1607         res.oac_mask = res.gds_heap_base = res.gds_heap_size = 0;
1608
1609         pr_debug("Scheduling resources:\n"
1610                         "vmid mask: 0x%8X\n"
1611                         "queue mask: 0x%8llX\n",
1612                         res.vmid_mask, res.queue_mask);
1613
1614         return pm_send_set_resources(&dqm->packet_mgr, &res);
1615 }
1616
1617 static int initialize_cpsch(struct device_queue_manager *dqm)
1618 {
1619         pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm));
1620
1621         mutex_init(&dqm->lock_hidden);
1622         INIT_LIST_HEAD(&dqm->queues);
1623         dqm->active_queue_count = dqm->processes_count = 0;
1624         dqm->active_cp_queue_count = 0;
1625         dqm->gws_queue_count = 0;
1626         dqm->active_runlist = false;
1627         INIT_WORK(&dqm->hw_exception_work, kfd_process_hw_exception);
1628         dqm->trap_debug_vmid = 0;
1629
1630         init_sdma_bitmaps(dqm);
1631
1632         if (dqm->dev->kfd2kgd->get_iq_wait_times)
1633                 dqm->dev->kfd2kgd->get_iq_wait_times(dqm->dev->adev,
1634                                         &dqm->wait_times,
1635                                         ffs(dqm->dev->xcc_mask) - 1);
1636         return 0;
1637 }
1638
1639 static int start_cpsch(struct device_queue_manager *dqm)
1640 {
1641         struct device *dev = dqm->dev->adev->dev;
1642         int retval;
1643
1644         retval = 0;
1645
1646         dqm_lock(dqm);
1647
1648         if (!dqm->dev->kfd->shared_resources.enable_mes) {
1649                 retval = pm_init(&dqm->packet_mgr, dqm);
1650                 if (retval)
1651                         goto fail_packet_manager_init;
1652
1653                 retval = set_sched_resources(dqm);
1654                 if (retval)
1655                         goto fail_set_sched_resources;
1656         }
1657         pr_debug("Allocating fence memory\n");
1658
1659         /* allocate fence memory on the gart */
1660         retval = kfd_gtt_sa_allocate(dqm->dev, sizeof(*dqm->fence_addr),
1661                                         &dqm->fence_mem);
1662
1663         if (retval)
1664                 goto fail_allocate_vidmem;
1665
1666         dqm->fence_addr = (uint64_t *)dqm->fence_mem->cpu_ptr;
1667         dqm->fence_gpu_addr = dqm->fence_mem->gpu_addr;
1668
1669         init_interrupts(dqm);
1670
1671         /* clear hang status when driver try to start the hw scheduler */
1672         dqm->is_hws_hang = false;
1673         dqm->is_resetting = false;
1674         dqm->sched_running = true;
1675
1676         if (!dqm->dev->kfd->shared_resources.enable_mes)
1677                 execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD);
1678
1679         /* Set CWSR grace period to 1x1000 cycle for GFX9.4.3 APU */
1680         if (amdgpu_emu_mode == 0 && dqm->dev->adev->gmc.is_app_apu &&
1681             (KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 3))) {
1682                 uint32_t reg_offset = 0;
1683                 uint32_t grace_period = 1;
1684
1685                 retval = pm_update_grace_period(&dqm->packet_mgr,
1686                                                 grace_period);
1687                 if (retval)
1688                         dev_err(dev, "Setting grace timeout failed\n");
1689                 else if (dqm->dev->kfd2kgd->build_grace_period_packet_info)
1690                         /* Update dqm->wait_times maintained in software */
1691                         dqm->dev->kfd2kgd->build_grace_period_packet_info(
1692                                         dqm->dev->adev, dqm->wait_times,
1693                                         grace_period, &reg_offset,
1694                                         &dqm->wait_times);
1695         }
1696
1697         dqm_unlock(dqm);
1698
1699         return 0;
1700 fail_allocate_vidmem:
1701 fail_set_sched_resources:
1702         if (!dqm->dev->kfd->shared_resources.enable_mes)
1703                 pm_uninit(&dqm->packet_mgr, false);
1704 fail_packet_manager_init:
1705         dqm_unlock(dqm);
1706         return retval;
1707 }
1708
1709 static int stop_cpsch(struct device_queue_manager *dqm)
1710 {
1711         bool hanging;
1712
1713         dqm_lock(dqm);
1714         if (!dqm->sched_running) {
1715                 dqm_unlock(dqm);
1716                 return 0;
1717         }
1718
1719         if (!dqm->is_hws_hang) {
1720                 if (!dqm->dev->kfd->shared_resources.enable_mes)
1721                         unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD, false);
1722                 else
1723                         remove_all_queues_mes(dqm);
1724         }
1725
1726         hanging = dqm->is_hws_hang || dqm->is_resetting;
1727         dqm->sched_running = false;
1728
1729         if (!dqm->dev->kfd->shared_resources.enable_mes)
1730                 pm_release_ib(&dqm->packet_mgr);
1731
1732         kfd_gtt_sa_free(dqm->dev, dqm->fence_mem);
1733         if (!dqm->dev->kfd->shared_resources.enable_mes)
1734                 pm_uninit(&dqm->packet_mgr, hanging);
1735         dqm_unlock(dqm);
1736
1737         return 0;
1738 }
1739
1740 static int create_kernel_queue_cpsch(struct device_queue_manager *dqm,
1741                                         struct kernel_queue *kq,
1742                                         struct qcm_process_device *qpd)
1743 {
1744         dqm_lock(dqm);
1745         if (dqm->total_queue_count >= max_num_of_queues_per_device) {
1746                 pr_warn("Can't create new kernel queue because %d queues were already created\n",
1747                                 dqm->total_queue_count);
1748                 dqm_unlock(dqm);
1749                 return -EPERM;
1750         }
1751
1752         /*
1753          * Unconditionally increment this counter, regardless of the queue's
1754          * type or whether the queue is active.
1755          */
1756         dqm->total_queue_count++;
1757         pr_debug("Total of %d queues are accountable so far\n",
1758                         dqm->total_queue_count);
1759
1760         list_add(&kq->list, &qpd->priv_queue_list);
1761         increment_queue_count(dqm, qpd, kq->queue);
1762         qpd->is_debug = true;
1763         execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0,
1764                         USE_DEFAULT_GRACE_PERIOD);
1765         dqm_unlock(dqm);
1766
1767         return 0;
1768 }
1769
1770 static void destroy_kernel_queue_cpsch(struct device_queue_manager *dqm,
1771                                         struct kernel_queue *kq,
1772                                         struct qcm_process_device *qpd)
1773 {
1774         dqm_lock(dqm);
1775         list_del(&kq->list);
1776         decrement_queue_count(dqm, qpd, kq->queue);
1777         qpd->is_debug = false;
1778         execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0,
1779                         USE_DEFAULT_GRACE_PERIOD);
1780         /*
1781          * Unconditionally decrement this counter, regardless of the queue's
1782          * type.
1783          */
1784         dqm->total_queue_count--;
1785         pr_debug("Total of %d queues are accountable so far\n",
1786                         dqm->total_queue_count);
1787         dqm_unlock(dqm);
1788 }
1789
1790 static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
1791                         struct qcm_process_device *qpd,
1792                         const struct kfd_criu_queue_priv_data *qd,
1793                         const void *restore_mqd, const void *restore_ctl_stack)
1794 {
1795         int retval;
1796         struct mqd_manager *mqd_mgr;
1797
1798         if (dqm->total_queue_count >= max_num_of_queues_per_device) {
1799                 pr_warn("Can't create new usermode queue because %d queues were already created\n",
1800                                 dqm->total_queue_count);
1801                 retval = -EPERM;
1802                 goto out;
1803         }
1804
1805         if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
1806                 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1807                 dqm_lock(dqm);
1808                 retval = allocate_sdma_queue(dqm, q, qd ? &qd->sdma_id : NULL);
1809                 dqm_unlock(dqm);
1810                 if (retval)
1811                         goto out;
1812         }
1813
1814         retval = allocate_doorbell(qpd, q, qd ? &qd->doorbell_id : NULL);
1815         if (retval)
1816                 goto out_deallocate_sdma_queue;
1817
1818         mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
1819                         q->properties.type)];
1820
1821         if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
1822                 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
1823                 dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
1824         q->properties.tba_addr = qpd->tba_addr;
1825         q->properties.tma_addr = qpd->tma_addr;
1826         q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
1827         if (!q->mqd_mem_obj) {
1828                 retval = -ENOMEM;
1829                 goto out_deallocate_doorbell;
1830         }
1831
1832         dqm_lock(dqm);
1833         /*
1834          * Eviction state logic: mark all queues as evicted, even ones
1835          * not currently active. Restoring inactive queues later only
1836          * updates the is_evicted flag but is a no-op otherwise.
1837          */
1838         q->properties.is_evicted = !!qpd->evicted;
1839         q->properties.is_dbg_wa = qpd->pqm->process->debug_trap_enabled &&
1840                                   kfd_dbg_has_cwsr_workaround(q->device);
1841
1842         if (qd)
1843                 mqd_mgr->restore_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, &q->gart_mqd_addr,
1844                                      &q->properties, restore_mqd, restore_ctl_stack,
1845                                      qd->ctl_stack_size);
1846         else
1847                 mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
1848                                         &q->gart_mqd_addr, &q->properties);
1849
1850         list_add(&q->list, &qpd->queues_list);
1851         qpd->queue_count++;
1852
1853         if (q->properties.is_active) {
1854                 increment_queue_count(dqm, qpd, q);
1855
1856                 if (!dqm->dev->kfd->shared_resources.enable_mes)
1857                         retval = execute_queues_cpsch(dqm,
1858                                         KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD);
1859                 else
1860                         retval = add_queue_mes(dqm, q, qpd);
1861                 if (retval)
1862                         goto cleanup_queue;
1863         }
1864
1865         /*
1866          * Unconditionally increment this counter, regardless of the queue's
1867          * type or whether the queue is active.
1868          */
1869         dqm->total_queue_count++;
1870
1871         pr_debug("Total of %d queues are accountable so far\n",
1872                         dqm->total_queue_count);
1873
1874         dqm_unlock(dqm);
1875         return retval;
1876
1877 cleanup_queue:
1878         qpd->queue_count--;
1879         list_del(&q->list);
1880         if (q->properties.is_active)
1881                 decrement_queue_count(dqm, qpd, q);
1882         mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
1883         dqm_unlock(dqm);
1884 out_deallocate_doorbell:
1885         deallocate_doorbell(qpd, q);
1886 out_deallocate_sdma_queue:
1887         if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
1888                 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1889                 dqm_lock(dqm);
1890                 deallocate_sdma_queue(dqm, q);
1891                 dqm_unlock(dqm);
1892         }
1893 out:
1894         return retval;
1895 }
1896
1897 int amdkfd_fence_wait_timeout(struct device_queue_manager *dqm,
1898                               uint64_t fence_value,
1899                               unsigned int timeout_ms)
1900 {
1901         unsigned long end_jiffies = msecs_to_jiffies(timeout_ms) + jiffies;
1902         struct device *dev = dqm->dev->adev->dev;
1903         uint64_t *fence_addr =  dqm->fence_addr;
1904
1905         while (*fence_addr != fence_value) {
1906                 /* Fatal err detected, this response won't come */
1907                 if (amdgpu_amdkfd_is_fed(dqm->dev->adev))
1908                         return -EIO;
1909
1910                 if (time_after(jiffies, end_jiffies)) {
1911                         dev_err(dev, "qcm fence wait loop timeout expired\n");
1912                         /* In HWS case, this is used to halt the driver thread
1913                          * in order not to mess up CP states before doing
1914                          * scandumps for FW debugging.
1915                          */
1916                         while (halt_if_hws_hang)
1917                                 schedule();
1918
1919                         return -ETIME;
1920                 }
1921                 schedule();
1922         }
1923
1924         return 0;
1925 }
1926
1927 /* dqm->lock mutex has to be locked before calling this function */
1928 static int map_queues_cpsch(struct device_queue_manager *dqm)
1929 {
1930         struct device *dev = dqm->dev->adev->dev;
1931         int retval;
1932
1933         if (!dqm->sched_running)
1934                 return 0;
1935         if (dqm->active_queue_count <= 0 || dqm->processes_count <= 0)
1936                 return 0;
1937         if (dqm->active_runlist)
1938                 return 0;
1939
1940         retval = pm_send_runlist(&dqm->packet_mgr, &dqm->queues);
1941         pr_debug("%s sent runlist\n", __func__);
1942         if (retval) {
1943                 dev_err(dev, "failed to execute runlist\n");
1944                 return retval;
1945         }
1946         dqm->active_runlist = true;
1947
1948         return retval;
1949 }
1950
1951 /* dqm->lock mutex has to be locked before calling this function */
1952 static int unmap_queues_cpsch(struct device_queue_manager *dqm,
1953                                 enum kfd_unmap_queues_filter filter,
1954                                 uint32_t filter_param,
1955                                 uint32_t grace_period,
1956                                 bool reset)
1957 {
1958         struct device *dev = dqm->dev->adev->dev;
1959         struct mqd_manager *mqd_mgr;
1960         int retval = 0;
1961
1962         if (!dqm->sched_running)
1963                 return 0;
1964         if (dqm->is_hws_hang || dqm->is_resetting)
1965                 return -EIO;
1966         if (!dqm->active_runlist)
1967                 return retval;
1968
1969         if (grace_period != USE_DEFAULT_GRACE_PERIOD) {
1970                 retval = pm_update_grace_period(&dqm->packet_mgr, grace_period);
1971                 if (retval)
1972                         return retval;
1973         }
1974
1975         retval = pm_send_unmap_queue(&dqm->packet_mgr, filter, filter_param, reset);
1976         if (retval)
1977                 return retval;
1978
1979         *dqm->fence_addr = KFD_FENCE_INIT;
1980         pm_send_query_status(&dqm->packet_mgr, dqm->fence_gpu_addr,
1981                                 KFD_FENCE_COMPLETED);
1982         /* should be timed out */
1983         retval = amdkfd_fence_wait_timeout(dqm, KFD_FENCE_COMPLETED,
1984                                            queue_preemption_timeout_ms);
1985         if (retval) {
1986                 dev_err(dev, "The cp might be in an unrecoverable state due to an unsuccessful queues preemption\n");
1987                 kfd_hws_hang(dqm);
1988                 return retval;
1989         }
1990
1991         /* In the current MEC firmware implementation, if compute queue
1992          * doesn't response to the preemption request in time, HIQ will
1993          * abandon the unmap request without returning any timeout error
1994          * to driver. Instead, MEC firmware will log the doorbell of the
1995          * unresponding compute queue to HIQ.MQD.queue_doorbell_id fields.
1996          * To make sure the queue unmap was successful, driver need to
1997          * check those fields
1998          */
1999         mqd_mgr = dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ];
2000         if (mqd_mgr->read_doorbell_id(dqm->packet_mgr.priv_queue->queue->mqd)) {
2001                 dev_err(dev, "HIQ MQD's queue_doorbell_id0 is not 0, Queue preemption time out\n");
2002                 while (halt_if_hws_hang)
2003                         schedule();
2004                 return -ETIME;
2005         }
2006
2007         /* We need to reset the grace period value for this device */
2008         if (grace_period != USE_DEFAULT_GRACE_PERIOD) {
2009                 if (pm_update_grace_period(&dqm->packet_mgr,
2010                                         USE_DEFAULT_GRACE_PERIOD))
2011                         dev_err(dev, "Failed to reset grace period\n");
2012         }
2013
2014         pm_release_ib(&dqm->packet_mgr);
2015         dqm->active_runlist = false;
2016
2017         return retval;
2018 }
2019
2020 /* only for compute queue */
2021 static int reset_queues_cpsch(struct device_queue_manager *dqm,
2022                         uint16_t pasid)
2023 {
2024         int retval;
2025
2026         dqm_lock(dqm);
2027
2028         retval = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_BY_PASID,
2029                         pasid, USE_DEFAULT_GRACE_PERIOD, true);
2030
2031         dqm_unlock(dqm);
2032         return retval;
2033 }
2034
2035 /* dqm->lock mutex has to be locked before calling this function */
2036 static int execute_queues_cpsch(struct device_queue_manager *dqm,
2037                                 enum kfd_unmap_queues_filter filter,
2038                                 uint32_t filter_param,
2039                                 uint32_t grace_period)
2040 {
2041         int retval;
2042
2043         if (dqm->is_hws_hang)
2044                 return -EIO;
2045         retval = unmap_queues_cpsch(dqm, filter, filter_param, grace_period, false);
2046         if (retval)
2047                 return retval;
2048
2049         return map_queues_cpsch(dqm);
2050 }
2051
2052 static int wait_on_destroy_queue(struct device_queue_manager *dqm,
2053                                  struct queue *q)
2054 {
2055         struct kfd_process_device *pdd = kfd_get_process_device_data(q->device,
2056                                                                 q->process);
2057         int ret = 0;
2058
2059         if (pdd->qpd.is_debug)
2060                 return ret;
2061
2062         q->properties.is_being_destroyed = true;
2063
2064         if (pdd->process->debug_trap_enabled && q->properties.is_suspended) {
2065                 dqm_unlock(dqm);
2066                 mutex_unlock(&q->process->mutex);
2067                 ret = wait_event_interruptible(dqm->destroy_wait,
2068                                                 !q->properties.is_suspended);
2069
2070                 mutex_lock(&q->process->mutex);
2071                 dqm_lock(dqm);
2072         }
2073
2074         return ret;
2075 }
2076
2077 static int destroy_queue_cpsch(struct device_queue_manager *dqm,
2078                                 struct qcm_process_device *qpd,
2079                                 struct queue *q)
2080 {
2081         int retval;
2082         struct mqd_manager *mqd_mgr;
2083         uint64_t sdma_val = 0;
2084         struct kfd_process_device *pdd = qpd_to_pdd(qpd);
2085         struct device *dev = dqm->dev->adev->dev;
2086
2087         /* Get the SDMA queue stats */
2088         if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) ||
2089             (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
2090                 retval = read_sdma_queue_counter((uint64_t __user *)q->properties.read_ptr,
2091                                                         &sdma_val);
2092                 if (retval)
2093                         dev_err(dev, "Failed to read SDMA queue counter for queue: %d\n",
2094                                 q->properties.queue_id);
2095         }
2096
2097         /* remove queue from list to prevent rescheduling after preemption */
2098         dqm_lock(dqm);
2099
2100         retval = wait_on_destroy_queue(dqm, q);
2101
2102         if (retval) {
2103                 dqm_unlock(dqm);
2104                 return retval;
2105         }
2106
2107         if (qpd->is_debug) {
2108                 /*
2109                  * error, currently we do not allow to destroy a queue
2110                  * of a currently debugged process
2111                  */
2112                 retval = -EBUSY;
2113                 goto failed_try_destroy_debugged_queue;
2114
2115         }
2116
2117         mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
2118                         q->properties.type)];
2119
2120         deallocate_doorbell(qpd, q);
2121
2122         if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) ||
2123             (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
2124                 deallocate_sdma_queue(dqm, q);
2125                 pdd->sdma_past_activity_counter += sdma_val;
2126         }
2127
2128         list_del(&q->list);
2129         qpd->queue_count--;
2130         if (q->properties.is_active) {
2131                 decrement_queue_count(dqm, qpd, q);
2132                 if (!dqm->dev->kfd->shared_resources.enable_mes) {
2133                         retval = execute_queues_cpsch(dqm,
2134                                                       KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0,
2135                                                       USE_DEFAULT_GRACE_PERIOD);
2136                         if (retval == -ETIME)
2137                                 qpd->reset_wavefronts = true;
2138                 } else {
2139                         retval = remove_queue_mes(dqm, q, qpd);
2140                 }
2141         }
2142
2143         /*
2144          * Unconditionally decrement this counter, regardless of the queue's
2145          * type
2146          */
2147         dqm->total_queue_count--;
2148         pr_debug("Total of %d queues are accountable so far\n",
2149                         dqm->total_queue_count);
2150
2151         dqm_unlock(dqm);
2152
2153         /*
2154          * Do free_mqd and raise delete event after dqm_unlock(dqm) to avoid
2155          * circular locking
2156          */
2157         kfd_dbg_ev_raise(KFD_EC_MASK(EC_DEVICE_QUEUE_DELETE),
2158                                 qpd->pqm->process, q->device,
2159                                 -1, false, NULL, 0);
2160
2161         mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
2162
2163         return retval;
2164
2165 failed_try_destroy_debugged_queue:
2166
2167         dqm_unlock(dqm);
2168         return retval;
2169 }
2170
2171 /*
2172  * Low bits must be 0000/FFFF as required by HW, high bits must be 0 to
2173  * stay in user mode.
2174  */
2175 #define APE1_FIXED_BITS_MASK 0xFFFF80000000FFFFULL
2176 /* APE1 limit is inclusive and 64K aligned. */
2177 #define APE1_LIMIT_ALIGNMENT 0xFFFF
2178
2179 static bool set_cache_memory_policy(struct device_queue_manager *dqm,
2180                                    struct qcm_process_device *qpd,
2181                                    enum cache_policy default_policy,
2182                                    enum cache_policy alternate_policy,
2183                                    void __user *alternate_aperture_base,
2184                                    uint64_t alternate_aperture_size)
2185 {
2186         bool retval = true;
2187
2188         if (!dqm->asic_ops.set_cache_memory_policy)
2189                 return retval;
2190
2191         dqm_lock(dqm);
2192
2193         if (alternate_aperture_size == 0) {
2194                 /* base > limit disables APE1 */
2195                 qpd->sh_mem_ape1_base = 1;
2196                 qpd->sh_mem_ape1_limit = 0;
2197         } else {
2198                 /*
2199                  * In FSA64, APE1_Base[63:0] = { 16{SH_MEM_APE1_BASE[31]},
2200                  *                      SH_MEM_APE1_BASE[31:0], 0x0000 }
2201                  * APE1_Limit[63:0] = { 16{SH_MEM_APE1_LIMIT[31]},
2202                  *                      SH_MEM_APE1_LIMIT[31:0], 0xFFFF }
2203                  * Verify that the base and size parameters can be
2204                  * represented in this format and convert them.
2205                  * Additionally restrict APE1 to user-mode addresses.
2206                  */
2207
2208                 uint64_t base = (uintptr_t)alternate_aperture_base;
2209                 uint64_t limit = base + alternate_aperture_size - 1;
2210
2211                 if (limit <= base || (base & APE1_FIXED_BITS_MASK) != 0 ||
2212                    (limit & APE1_FIXED_BITS_MASK) != APE1_LIMIT_ALIGNMENT) {
2213                         retval = false;
2214                         goto out;
2215                 }
2216
2217                 qpd->sh_mem_ape1_base = base >> 16;
2218                 qpd->sh_mem_ape1_limit = limit >> 16;
2219         }
2220
2221         retval = dqm->asic_ops.set_cache_memory_policy(
2222                         dqm,
2223                         qpd,
2224                         default_policy,
2225                         alternate_policy,
2226                         alternate_aperture_base,
2227                         alternate_aperture_size);
2228
2229         if ((dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) && (qpd->vmid != 0))
2230                 program_sh_mem_settings(dqm, qpd);
2231
2232         pr_debug("sh_mem_config: 0x%x, ape1_base: 0x%x, ape1_limit: 0x%x\n",
2233                 qpd->sh_mem_config, qpd->sh_mem_ape1_base,
2234                 qpd->sh_mem_ape1_limit);
2235
2236 out:
2237         dqm_unlock(dqm);
2238         return retval;
2239 }
2240
2241 static int process_termination_nocpsch(struct device_queue_manager *dqm,
2242                 struct qcm_process_device *qpd)
2243 {
2244         struct queue *q;
2245         struct device_process_node *cur, *next_dpn;
2246         int retval = 0;
2247         bool found = false;
2248
2249         dqm_lock(dqm);
2250
2251         /* Clear all user mode queues */
2252         while (!list_empty(&qpd->queues_list)) {
2253                 struct mqd_manager *mqd_mgr;
2254                 int ret;
2255
2256                 q = list_first_entry(&qpd->queues_list, struct queue, list);
2257                 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
2258                                 q->properties.type)];
2259                 ret = destroy_queue_nocpsch_locked(dqm, qpd, q);
2260                 if (ret)
2261                         retval = ret;
2262                 dqm_unlock(dqm);
2263                 mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
2264                 dqm_lock(dqm);
2265         }
2266
2267         /* Unregister process */
2268         list_for_each_entry_safe(cur, next_dpn, &dqm->queues, list) {
2269                 if (qpd == cur->qpd) {
2270                         list_del(&cur->list);
2271                         kfree(cur);
2272                         dqm->processes_count--;
2273                         found = true;
2274                         break;
2275                 }
2276         }
2277
2278         dqm_unlock(dqm);
2279
2280         /* Outside the DQM lock because under the DQM lock we can't do
2281          * reclaim or take other locks that others hold while reclaiming.
2282          */
2283         if (found)
2284                 kfd_dec_compute_active(dqm->dev);
2285
2286         return retval;
2287 }
2288
2289 static int get_wave_state(struct device_queue_manager *dqm,
2290                           struct queue *q,
2291                           void __user *ctl_stack,
2292                           u32 *ctl_stack_used_size,
2293                           u32 *save_area_used_size)
2294 {
2295         struct mqd_manager *mqd_mgr;
2296
2297         dqm_lock(dqm);
2298
2299         mqd_mgr = dqm->mqd_mgrs[KFD_MQD_TYPE_CP];
2300
2301         if (q->properties.type != KFD_QUEUE_TYPE_COMPUTE ||
2302             q->properties.is_active || !q->device->kfd->cwsr_enabled ||
2303             !mqd_mgr->get_wave_state) {
2304                 dqm_unlock(dqm);
2305                 return -EINVAL;
2306         }
2307
2308         dqm_unlock(dqm);
2309
2310         /*
2311          * get_wave_state is outside the dqm lock to prevent circular locking
2312          * and the queue should be protected against destruction by the process
2313          * lock.
2314          */
2315         return mqd_mgr->get_wave_state(mqd_mgr, q->mqd, &q->properties,
2316                         ctl_stack, ctl_stack_used_size, save_area_used_size);
2317 }
2318
2319 static void get_queue_checkpoint_info(struct device_queue_manager *dqm,
2320                         const struct queue *q,
2321                         u32 *mqd_size,
2322                         u32 *ctl_stack_size)
2323 {
2324         struct mqd_manager *mqd_mgr;
2325         enum KFD_MQD_TYPE mqd_type =
2326                         get_mqd_type_from_queue_type(q->properties.type);
2327
2328         dqm_lock(dqm);
2329         mqd_mgr = dqm->mqd_mgrs[mqd_type];
2330         *mqd_size = mqd_mgr->mqd_size;
2331         *ctl_stack_size = 0;
2332
2333         if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE && mqd_mgr->get_checkpoint_info)
2334                 mqd_mgr->get_checkpoint_info(mqd_mgr, q->mqd, ctl_stack_size);
2335
2336         dqm_unlock(dqm);
2337 }
2338
2339 static int checkpoint_mqd(struct device_queue_manager *dqm,
2340                           const struct queue *q,
2341                           void *mqd,
2342                           void *ctl_stack)
2343 {
2344         struct mqd_manager *mqd_mgr;
2345         int r = 0;
2346         enum KFD_MQD_TYPE mqd_type =
2347                         get_mqd_type_from_queue_type(q->properties.type);
2348
2349         dqm_lock(dqm);
2350
2351         if (q->properties.is_active || !q->device->kfd->cwsr_enabled) {
2352                 r = -EINVAL;
2353                 goto dqm_unlock;
2354         }
2355
2356         mqd_mgr = dqm->mqd_mgrs[mqd_type];
2357         if (!mqd_mgr->checkpoint_mqd) {
2358                 r = -EOPNOTSUPP;
2359                 goto dqm_unlock;
2360         }
2361
2362         mqd_mgr->checkpoint_mqd(mqd_mgr, q->mqd, mqd, ctl_stack);
2363
2364 dqm_unlock:
2365         dqm_unlock(dqm);
2366         return r;
2367 }
2368
2369 static int process_termination_cpsch(struct device_queue_manager *dqm,
2370                 struct qcm_process_device *qpd)
2371 {
2372         int retval;
2373         struct queue *q;
2374         struct device *dev = dqm->dev->adev->dev;
2375         struct kernel_queue *kq, *kq_next;
2376         struct mqd_manager *mqd_mgr;
2377         struct device_process_node *cur, *next_dpn;
2378         enum kfd_unmap_queues_filter filter =
2379                 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES;
2380         bool found = false;
2381
2382         retval = 0;
2383
2384         dqm_lock(dqm);
2385
2386         /* Clean all kernel queues */
2387         list_for_each_entry_safe(kq, kq_next, &qpd->priv_queue_list, list) {
2388                 list_del(&kq->list);
2389                 decrement_queue_count(dqm, qpd, kq->queue);
2390                 qpd->is_debug = false;
2391                 dqm->total_queue_count--;
2392                 filter = KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES;
2393         }
2394
2395         /* Clear all user mode queues */
2396         list_for_each_entry(q, &qpd->queues_list, list) {
2397                 if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
2398                         deallocate_sdma_queue(dqm, q);
2399                 else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
2400                         deallocate_sdma_queue(dqm, q);
2401
2402                 if (q->properties.is_active) {
2403                         decrement_queue_count(dqm, qpd, q);
2404
2405                         if (dqm->dev->kfd->shared_resources.enable_mes) {
2406                                 retval = remove_queue_mes(dqm, q, qpd);
2407                                 if (retval)
2408                                         dev_err(dev, "Failed to remove queue %d\n",
2409                                                 q->properties.queue_id);
2410                         }
2411                 }
2412
2413                 dqm->total_queue_count--;
2414         }
2415
2416         /* Unregister process */
2417         list_for_each_entry_safe(cur, next_dpn, &dqm->queues, list) {
2418                 if (qpd == cur->qpd) {
2419                         list_del(&cur->list);
2420                         kfree(cur);
2421                         dqm->processes_count--;
2422                         found = true;
2423                         break;
2424                 }
2425         }
2426
2427         if (!dqm->dev->kfd->shared_resources.enable_mes)
2428                 retval = execute_queues_cpsch(dqm, filter, 0, USE_DEFAULT_GRACE_PERIOD);
2429
2430         if ((!dqm->is_hws_hang) && (retval || qpd->reset_wavefronts)) {
2431                 pr_warn("Resetting wave fronts (cpsch) on dev %p\n", dqm->dev);
2432                 dbgdev_wave_reset_wavefronts(dqm->dev, qpd->pqm->process);
2433                 qpd->reset_wavefronts = false;
2434         }
2435
2436         /* Lastly, free mqd resources.
2437          * Do free_mqd() after dqm_unlock to avoid circular locking.
2438          */
2439         while (!list_empty(&qpd->queues_list)) {
2440                 q = list_first_entry(&qpd->queues_list, struct queue, list);
2441                 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
2442                                 q->properties.type)];
2443                 list_del(&q->list);
2444                 qpd->queue_count--;
2445                 dqm_unlock(dqm);
2446                 mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
2447                 dqm_lock(dqm);
2448         }
2449         dqm_unlock(dqm);
2450
2451         /* Outside the DQM lock because under the DQM lock we can't do
2452          * reclaim or take other locks that others hold while reclaiming.
2453          */
2454         if (found)
2455                 kfd_dec_compute_active(dqm->dev);
2456
2457         return retval;
2458 }
2459
2460 static int init_mqd_managers(struct device_queue_manager *dqm)
2461 {
2462         int i, j;
2463         struct device *dev = dqm->dev->adev->dev;
2464         struct mqd_manager *mqd_mgr;
2465
2466         for (i = 0; i < KFD_MQD_TYPE_MAX; i++) {
2467                 mqd_mgr = dqm->asic_ops.mqd_manager_init(i, dqm->dev);
2468                 if (!mqd_mgr) {
2469                         dev_err(dev, "mqd manager [%d] initialization failed\n", i);
2470                         goto out_free;
2471                 }
2472                 dqm->mqd_mgrs[i] = mqd_mgr;
2473         }
2474
2475         return 0;
2476
2477 out_free:
2478         for (j = 0; j < i; j++) {
2479                 kfree(dqm->mqd_mgrs[j]);
2480                 dqm->mqd_mgrs[j] = NULL;
2481         }
2482
2483         return -ENOMEM;
2484 }
2485
2486 /* Allocate one hiq mqd (HWS) and all SDMA mqd in a continuous trunk*/
2487 static int allocate_hiq_sdma_mqd(struct device_queue_manager *dqm)
2488 {
2489         int retval;
2490         struct kfd_node *dev = dqm->dev;
2491         struct kfd_mem_obj *mem_obj = &dqm->hiq_sdma_mqd;
2492         uint32_t size = dqm->mqd_mgrs[KFD_MQD_TYPE_SDMA]->mqd_size *
2493                 get_num_all_sdma_engines(dqm) *
2494                 dev->kfd->device_info.num_sdma_queues_per_engine +
2495                 (dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ]->mqd_size *
2496                 NUM_XCC(dqm->dev->xcc_mask));
2497
2498         retval = amdgpu_amdkfd_alloc_gtt_mem(dev->adev, size,
2499                 &(mem_obj->gtt_mem), &(mem_obj->gpu_addr),
2500                 (void *)&(mem_obj->cpu_ptr), false);
2501
2502         return retval;
2503 }
2504
2505 struct device_queue_manager *device_queue_manager_init(struct kfd_node *dev)
2506 {
2507         struct device_queue_manager *dqm;
2508
2509         pr_debug("Loading device queue manager\n");
2510
2511         dqm = kzalloc(sizeof(*dqm), GFP_KERNEL);
2512         if (!dqm)
2513                 return NULL;
2514
2515         switch (dev->adev->asic_type) {
2516         /* HWS is not available on Hawaii. */
2517         case CHIP_HAWAII:
2518         /* HWS depends on CWSR for timely dequeue. CWSR is not
2519          * available on Tonga.
2520          *
2521          * FIXME: This argument also applies to Kaveri.
2522          */
2523         case CHIP_TONGA:
2524                 dqm->sched_policy = KFD_SCHED_POLICY_NO_HWS;
2525                 break;
2526         default:
2527                 dqm->sched_policy = sched_policy;
2528                 break;
2529         }
2530
2531         dqm->dev = dev;
2532         switch (dqm->sched_policy) {
2533         case KFD_SCHED_POLICY_HWS:
2534         case KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION:
2535                 /* initialize dqm for cp scheduling */
2536                 dqm->ops.create_queue = create_queue_cpsch;
2537                 dqm->ops.initialize = initialize_cpsch;
2538                 dqm->ops.start = start_cpsch;
2539                 dqm->ops.stop = stop_cpsch;
2540                 dqm->ops.pre_reset = pre_reset;
2541                 dqm->ops.destroy_queue = destroy_queue_cpsch;
2542                 dqm->ops.update_queue = update_queue;
2543                 dqm->ops.register_process = register_process;
2544                 dqm->ops.unregister_process = unregister_process;
2545                 dqm->ops.uninitialize = uninitialize;
2546                 dqm->ops.create_kernel_queue = create_kernel_queue_cpsch;
2547                 dqm->ops.destroy_kernel_queue = destroy_kernel_queue_cpsch;
2548                 dqm->ops.set_cache_memory_policy = set_cache_memory_policy;
2549                 dqm->ops.process_termination = process_termination_cpsch;
2550                 dqm->ops.evict_process_queues = evict_process_queues_cpsch;
2551                 dqm->ops.restore_process_queues = restore_process_queues_cpsch;
2552                 dqm->ops.get_wave_state = get_wave_state;
2553                 dqm->ops.reset_queues = reset_queues_cpsch;
2554                 dqm->ops.get_queue_checkpoint_info = get_queue_checkpoint_info;
2555                 dqm->ops.checkpoint_mqd = checkpoint_mqd;
2556                 break;
2557         case KFD_SCHED_POLICY_NO_HWS:
2558                 /* initialize dqm for no cp scheduling */
2559                 dqm->ops.start = start_nocpsch;
2560                 dqm->ops.stop = stop_nocpsch;
2561                 dqm->ops.pre_reset = pre_reset;
2562                 dqm->ops.create_queue = create_queue_nocpsch;
2563                 dqm->ops.destroy_queue = destroy_queue_nocpsch;
2564                 dqm->ops.update_queue = update_queue;
2565                 dqm->ops.register_process = register_process;
2566                 dqm->ops.unregister_process = unregister_process;
2567                 dqm->ops.initialize = initialize_nocpsch;
2568                 dqm->ops.uninitialize = uninitialize;
2569                 dqm->ops.set_cache_memory_policy = set_cache_memory_policy;
2570                 dqm->ops.process_termination = process_termination_nocpsch;
2571                 dqm->ops.evict_process_queues = evict_process_queues_nocpsch;
2572                 dqm->ops.restore_process_queues =
2573                         restore_process_queues_nocpsch;
2574                 dqm->ops.get_wave_state = get_wave_state;
2575                 dqm->ops.get_queue_checkpoint_info = get_queue_checkpoint_info;
2576                 dqm->ops.checkpoint_mqd = checkpoint_mqd;
2577                 break;
2578         default:
2579                 dev_err(dev->adev->dev, "Invalid scheduling policy %d\n", dqm->sched_policy);
2580                 goto out_free;
2581         }
2582
2583         switch (dev->adev->asic_type) {
2584         case CHIP_KAVERI:
2585         case CHIP_HAWAII:
2586                 device_queue_manager_init_cik(&dqm->asic_ops);
2587                 break;
2588
2589         case CHIP_CARRIZO:
2590         case CHIP_TONGA:
2591         case CHIP_FIJI:
2592         case CHIP_POLARIS10:
2593         case CHIP_POLARIS11:
2594         case CHIP_POLARIS12:
2595         case CHIP_VEGAM:
2596                 device_queue_manager_init_vi(&dqm->asic_ops);
2597                 break;
2598
2599         default:
2600                 if (KFD_GC_VERSION(dev) >= IP_VERSION(11, 0, 0))
2601                         device_queue_manager_init_v11(&dqm->asic_ops);
2602                 else if (KFD_GC_VERSION(dev) >= IP_VERSION(10, 1, 1))
2603                         device_queue_manager_init_v10(&dqm->asic_ops);
2604                 else if (KFD_GC_VERSION(dev) >= IP_VERSION(9, 0, 1))
2605                         device_queue_manager_init_v9(&dqm->asic_ops);
2606                 else {
2607                         WARN(1, "Unexpected ASIC family %u",
2608                              dev->adev->asic_type);
2609                         goto out_free;
2610                 }
2611         }
2612
2613         if (init_mqd_managers(dqm))
2614                 goto out_free;
2615
2616         if (!dev->kfd->shared_resources.enable_mes && allocate_hiq_sdma_mqd(dqm)) {
2617                 dev_err(dev->adev->dev, "Failed to allocate hiq sdma mqd trunk buffer\n");
2618                 goto out_free;
2619         }
2620
2621         if (!dqm->ops.initialize(dqm)) {
2622                 init_waitqueue_head(&dqm->destroy_wait);
2623                 return dqm;
2624         }
2625
2626 out_free:
2627         kfree(dqm);
2628         return NULL;
2629 }
2630
2631 static void deallocate_hiq_sdma_mqd(struct kfd_node *dev,
2632                                     struct kfd_mem_obj *mqd)
2633 {
2634         WARN(!mqd, "No hiq sdma mqd trunk to free");
2635
2636         amdgpu_amdkfd_free_gtt_mem(dev->adev, mqd->gtt_mem);
2637 }
2638
2639 void device_queue_manager_uninit(struct device_queue_manager *dqm)
2640 {
2641         dqm->ops.stop(dqm);
2642         dqm->ops.uninitialize(dqm);
2643         if (!dqm->dev->kfd->shared_resources.enable_mes)
2644                 deallocate_hiq_sdma_mqd(dqm->dev, &dqm->hiq_sdma_mqd);
2645         kfree(dqm);
2646 }
2647
2648 int kfd_dqm_evict_pasid(struct device_queue_manager *dqm, u32 pasid)
2649 {
2650         struct kfd_process_device *pdd;
2651         struct kfd_process *p = kfd_lookup_process_by_pasid(pasid);
2652         int ret = 0;
2653
2654         if (!p)
2655                 return -EINVAL;
2656         WARN(debug_evictions, "Evicting pid %d", p->lead_thread->pid);
2657         pdd = kfd_get_process_device_data(dqm->dev, p);
2658         if (pdd)
2659                 ret = dqm->ops.evict_process_queues(dqm, &pdd->qpd);
2660         kfd_unref_process(p);
2661
2662         return ret;
2663 }
2664
2665 static void kfd_process_hw_exception(struct work_struct *work)
2666 {
2667         struct device_queue_manager *dqm = container_of(work,
2668                         struct device_queue_manager, hw_exception_work);
2669         amdgpu_amdkfd_gpu_reset(dqm->dev->adev);
2670 }
2671
2672 int reserve_debug_trap_vmid(struct device_queue_manager *dqm,
2673                                 struct qcm_process_device *qpd)
2674 {
2675         int r;
2676         struct device *dev = dqm->dev->adev->dev;
2677         int updated_vmid_mask;
2678
2679         if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
2680                 dev_err(dev, "Unsupported on sched_policy: %i\n", dqm->sched_policy);
2681                 return -EINVAL;
2682         }
2683
2684         dqm_lock(dqm);
2685
2686         if (dqm->trap_debug_vmid != 0) {
2687                 dev_err(dev, "Trap debug id already reserved\n");
2688                 r = -EBUSY;
2689                 goto out_unlock;
2690         }
2691
2692         r = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0,
2693                         USE_DEFAULT_GRACE_PERIOD, false);
2694         if (r)
2695                 goto out_unlock;
2696
2697         updated_vmid_mask = dqm->dev->kfd->shared_resources.compute_vmid_bitmap;
2698         updated_vmid_mask &= ~(1 << dqm->dev->vm_info.last_vmid_kfd);
2699
2700         dqm->dev->kfd->shared_resources.compute_vmid_bitmap = updated_vmid_mask;
2701         dqm->trap_debug_vmid = dqm->dev->vm_info.last_vmid_kfd;
2702         r = set_sched_resources(dqm);
2703         if (r)
2704                 goto out_unlock;
2705
2706         r = map_queues_cpsch(dqm);
2707         if (r)
2708                 goto out_unlock;
2709
2710         pr_debug("Reserved VMID for trap debug: %i\n", dqm->trap_debug_vmid);
2711
2712 out_unlock:
2713         dqm_unlock(dqm);
2714         return r;
2715 }
2716
2717 /*
2718  * Releases vmid for the trap debugger
2719  */
2720 int release_debug_trap_vmid(struct device_queue_manager *dqm,
2721                         struct qcm_process_device *qpd)
2722 {
2723         struct device *dev = dqm->dev->adev->dev;
2724         int r;
2725         int updated_vmid_mask;
2726         uint32_t trap_debug_vmid;
2727
2728         if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
2729                 dev_err(dev, "Unsupported on sched_policy: %i\n", dqm->sched_policy);
2730                 return -EINVAL;
2731         }
2732
2733         dqm_lock(dqm);
2734         trap_debug_vmid = dqm->trap_debug_vmid;
2735         if (dqm->trap_debug_vmid == 0) {
2736                 dev_err(dev, "Trap debug id is not reserved\n");
2737                 r = -EINVAL;
2738                 goto out_unlock;
2739         }
2740
2741         r = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0,
2742                         USE_DEFAULT_GRACE_PERIOD, false);
2743         if (r)
2744                 goto out_unlock;
2745
2746         updated_vmid_mask = dqm->dev->kfd->shared_resources.compute_vmid_bitmap;
2747         updated_vmid_mask |= (1 << dqm->dev->vm_info.last_vmid_kfd);
2748
2749         dqm->dev->kfd->shared_resources.compute_vmid_bitmap = updated_vmid_mask;
2750         dqm->trap_debug_vmid = 0;
2751         r = set_sched_resources(dqm);
2752         if (r)
2753                 goto out_unlock;
2754
2755         r = map_queues_cpsch(dqm);
2756         if (r)
2757                 goto out_unlock;
2758
2759         pr_debug("Released VMID for trap debug: %i\n", trap_debug_vmid);
2760
2761 out_unlock:
2762         dqm_unlock(dqm);
2763         return r;
2764 }
2765
2766 #define QUEUE_NOT_FOUND         -1
2767 /* invalidate queue operation in array */
2768 static void q_array_invalidate(uint32_t num_queues, uint32_t *queue_ids)
2769 {
2770         int i;
2771
2772         for (i = 0; i < num_queues; i++)
2773                 queue_ids[i] |= KFD_DBG_QUEUE_INVALID_MASK;
2774 }
2775
2776 /* find queue index in array */
2777 static int q_array_get_index(unsigned int queue_id,
2778                 uint32_t num_queues,
2779                 uint32_t *queue_ids)
2780 {
2781         int i;
2782
2783         for (i = 0; i < num_queues; i++)
2784                 if (queue_id == (queue_ids[i] & ~KFD_DBG_QUEUE_INVALID_MASK))
2785                         return i;
2786
2787         return QUEUE_NOT_FOUND;
2788 }
2789
2790 struct copy_context_work_handler_workarea {
2791         struct work_struct copy_context_work;
2792         struct kfd_process *p;
2793 };
2794
2795 static void copy_context_work_handler (struct work_struct *work)
2796 {
2797         struct copy_context_work_handler_workarea *workarea;
2798         struct mqd_manager *mqd_mgr;
2799         struct queue *q;
2800         struct mm_struct *mm;
2801         struct kfd_process *p;
2802         uint32_t tmp_ctl_stack_used_size, tmp_save_area_used_size;
2803         int i;
2804
2805         workarea = container_of(work,
2806                         struct copy_context_work_handler_workarea,
2807                         copy_context_work);
2808
2809         p = workarea->p;
2810         mm = get_task_mm(p->lead_thread);
2811
2812         if (!mm)
2813                 return;
2814
2815         kthread_use_mm(mm);
2816         for (i = 0; i < p->n_pdds; i++) {
2817                 struct kfd_process_device *pdd = p->pdds[i];
2818                 struct device_queue_manager *dqm = pdd->dev->dqm;
2819                 struct qcm_process_device *qpd = &pdd->qpd;
2820
2821                 list_for_each_entry(q, &qpd->queues_list, list) {
2822                         mqd_mgr = dqm->mqd_mgrs[KFD_MQD_TYPE_CP];
2823
2824                         /* We ignore the return value from get_wave_state
2825                          * because
2826                          * i) right now, it always returns 0, and
2827                          * ii) if we hit an error, we would continue to the
2828                          *      next queue anyway.
2829                          */
2830                         mqd_mgr->get_wave_state(mqd_mgr,
2831                                         q->mqd,
2832                                         &q->properties,
2833                                         (void __user *) q->properties.ctx_save_restore_area_address,
2834                                         &tmp_ctl_stack_used_size,
2835                                         &tmp_save_area_used_size);
2836                 }
2837         }
2838         kthread_unuse_mm(mm);
2839         mmput(mm);
2840 }
2841
2842 static uint32_t *get_queue_ids(uint32_t num_queues, uint32_t *usr_queue_id_array)
2843 {
2844         size_t array_size = num_queues * sizeof(uint32_t);
2845
2846         if (!usr_queue_id_array)
2847                 return NULL;
2848
2849         return memdup_user(usr_queue_id_array, array_size);
2850 }
2851
2852 int resume_queues(struct kfd_process *p,
2853                 uint32_t num_queues,
2854                 uint32_t *usr_queue_id_array)
2855 {
2856         uint32_t *queue_ids = NULL;
2857         int total_resumed = 0;
2858         int i;
2859
2860         if (usr_queue_id_array) {
2861                 queue_ids = get_queue_ids(num_queues, usr_queue_id_array);
2862
2863                 if (IS_ERR(queue_ids))
2864                         return PTR_ERR(queue_ids);
2865
2866                 /* mask all queues as invalid.  unmask per successful request */
2867                 q_array_invalidate(num_queues, queue_ids);
2868         }
2869
2870         for (i = 0; i < p->n_pdds; i++) {
2871                 struct kfd_process_device *pdd = p->pdds[i];
2872                 struct device_queue_manager *dqm = pdd->dev->dqm;
2873                 struct device *dev = dqm->dev->adev->dev;
2874                 struct qcm_process_device *qpd = &pdd->qpd;
2875                 struct queue *q;
2876                 int r, per_device_resumed = 0;
2877
2878                 dqm_lock(dqm);
2879
2880                 /* unmask queues that resume or already resumed as valid */
2881                 list_for_each_entry(q, &qpd->queues_list, list) {
2882                         int q_idx = QUEUE_NOT_FOUND;
2883
2884                         if (queue_ids)
2885                                 q_idx = q_array_get_index(
2886                                                 q->properties.queue_id,
2887                                                 num_queues,
2888                                                 queue_ids);
2889
2890                         if (!queue_ids || q_idx != QUEUE_NOT_FOUND) {
2891                                 int err = resume_single_queue(dqm, &pdd->qpd, q);
2892
2893                                 if (queue_ids) {
2894                                         if (!err) {
2895                                                 queue_ids[q_idx] &=
2896                                                         ~KFD_DBG_QUEUE_INVALID_MASK;
2897                                         } else {
2898                                                 queue_ids[q_idx] |=
2899                                                         KFD_DBG_QUEUE_ERROR_MASK;
2900                                                 break;
2901                                         }
2902                                 }
2903
2904                                 if (dqm->dev->kfd->shared_resources.enable_mes) {
2905                                         wake_up_all(&dqm->destroy_wait);
2906                                         if (!err)
2907                                                 total_resumed++;
2908                                 } else {
2909                                         per_device_resumed++;
2910                                 }
2911                         }
2912                 }
2913
2914                 if (!per_device_resumed) {
2915                         dqm_unlock(dqm);
2916                         continue;
2917                 }
2918
2919                 r = execute_queues_cpsch(dqm,
2920                                         KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES,
2921                                         0,
2922                                         USE_DEFAULT_GRACE_PERIOD);
2923                 if (r) {
2924                         dev_err(dev, "Failed to resume process queues\n");
2925                         if (queue_ids) {
2926                                 list_for_each_entry(q, &qpd->queues_list, list) {
2927                                         int q_idx = q_array_get_index(
2928                                                         q->properties.queue_id,
2929                                                         num_queues,
2930                                                         queue_ids);
2931
2932                                         /* mask queue as error on resume fail */
2933                                         if (q_idx != QUEUE_NOT_FOUND)
2934                                                 queue_ids[q_idx] |=
2935                                                         KFD_DBG_QUEUE_ERROR_MASK;
2936                                 }
2937                         }
2938                 } else {
2939                         wake_up_all(&dqm->destroy_wait);
2940                         total_resumed += per_device_resumed;
2941                 }
2942
2943                 dqm_unlock(dqm);
2944         }
2945
2946         if (queue_ids) {
2947                 if (copy_to_user((void __user *)usr_queue_id_array, queue_ids,
2948                                 num_queues * sizeof(uint32_t)))
2949                         pr_err("copy_to_user failed on queue resume\n");
2950
2951                 kfree(queue_ids);
2952         }
2953
2954         return total_resumed;
2955 }
2956
2957 int suspend_queues(struct kfd_process *p,
2958                         uint32_t num_queues,
2959                         uint32_t grace_period,
2960                         uint64_t exception_clear_mask,
2961                         uint32_t *usr_queue_id_array)
2962 {
2963         uint32_t *queue_ids = get_queue_ids(num_queues, usr_queue_id_array);
2964         int total_suspended = 0;
2965         int i;
2966
2967         if (IS_ERR(queue_ids))
2968                 return PTR_ERR(queue_ids);
2969
2970         /* mask all queues as invalid.  umask on successful request */
2971         q_array_invalidate(num_queues, queue_ids);
2972
2973         for (i = 0; i < p->n_pdds; i++) {
2974                 struct kfd_process_device *pdd = p->pdds[i];
2975                 struct device_queue_manager *dqm = pdd->dev->dqm;
2976                 struct device *dev = dqm->dev->adev->dev;
2977                 struct qcm_process_device *qpd = &pdd->qpd;
2978                 struct queue *q;
2979                 int r, per_device_suspended = 0;
2980
2981                 mutex_lock(&p->event_mutex);
2982                 dqm_lock(dqm);
2983
2984                 /* unmask queues that suspend or already suspended */
2985                 list_for_each_entry(q, &qpd->queues_list, list) {
2986                         int q_idx = q_array_get_index(q->properties.queue_id,
2987                                                         num_queues,
2988                                                         queue_ids);
2989
2990                         if (q_idx != QUEUE_NOT_FOUND) {
2991                                 int err = suspend_single_queue(dqm, pdd, q);
2992                                 bool is_mes = dqm->dev->kfd->shared_resources.enable_mes;
2993
2994                                 if (!err) {
2995                                         queue_ids[q_idx] &= ~KFD_DBG_QUEUE_INVALID_MASK;
2996                                         if (exception_clear_mask && is_mes)
2997                                                 q->properties.exception_status &=
2998                                                         ~exception_clear_mask;
2999
3000                                         if (is_mes)
3001                                                 total_suspended++;
3002                                         else
3003                                                 per_device_suspended++;
3004                                 } else if (err != -EBUSY) {
3005                                         r = err;
3006                                         queue_ids[q_idx] |= KFD_DBG_QUEUE_ERROR_MASK;
3007                                         break;
3008                                 }
3009                         }
3010                 }
3011
3012                 if (!per_device_suspended) {
3013                         dqm_unlock(dqm);
3014                         mutex_unlock(&p->event_mutex);
3015                         if (total_suspended)
3016                                 amdgpu_amdkfd_debug_mem_fence(dqm->dev->adev);
3017                         continue;
3018                 }
3019
3020                 r = execute_queues_cpsch(dqm,
3021                         KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0,
3022                         grace_period);
3023
3024                 if (r)
3025                         dev_err(dev, "Failed to suspend process queues.\n");
3026                 else
3027                         total_suspended += per_device_suspended;
3028
3029                 list_for_each_entry(q, &qpd->queues_list, list) {
3030                         int q_idx = q_array_get_index(q->properties.queue_id,
3031                                                 num_queues, queue_ids);
3032
3033                         if (q_idx == QUEUE_NOT_FOUND)
3034                                 continue;
3035
3036                         /* mask queue as error on suspend fail */
3037                         if (r)
3038                                 queue_ids[q_idx] |= KFD_DBG_QUEUE_ERROR_MASK;
3039                         else if (exception_clear_mask)
3040                                 q->properties.exception_status &=
3041                                                         ~exception_clear_mask;
3042                 }
3043
3044                 dqm_unlock(dqm);
3045                 mutex_unlock(&p->event_mutex);
3046                 amdgpu_device_flush_hdp(dqm->dev->adev, NULL);
3047         }
3048
3049         if (total_suspended) {
3050                 struct copy_context_work_handler_workarea copy_context_worker;
3051
3052                 INIT_WORK_ONSTACK(
3053                                 &copy_context_worker.copy_context_work,
3054                                 copy_context_work_handler);
3055
3056                 copy_context_worker.p = p;
3057
3058                 schedule_work(&copy_context_worker.copy_context_work);
3059
3060
3061                 flush_work(&copy_context_worker.copy_context_work);
3062                 destroy_work_on_stack(&copy_context_worker.copy_context_work);
3063         }
3064
3065         if (copy_to_user((void __user *)usr_queue_id_array, queue_ids,
3066                         num_queues * sizeof(uint32_t)))
3067                 pr_err("copy_to_user failed on queue suspend\n");
3068
3069         kfree(queue_ids);
3070
3071         return total_suspended;
3072 }
3073
3074 static uint32_t set_queue_type_for_user(struct queue_properties *q_props)
3075 {
3076         switch (q_props->type) {
3077         case KFD_QUEUE_TYPE_COMPUTE:
3078                 return q_props->format == KFD_QUEUE_FORMAT_PM4
3079                                         ? KFD_IOC_QUEUE_TYPE_COMPUTE
3080                                         : KFD_IOC_QUEUE_TYPE_COMPUTE_AQL;
3081         case KFD_QUEUE_TYPE_SDMA:
3082                 return KFD_IOC_QUEUE_TYPE_SDMA;
3083         case KFD_QUEUE_TYPE_SDMA_XGMI:
3084                 return KFD_IOC_QUEUE_TYPE_SDMA_XGMI;
3085         default:
3086                 WARN_ONCE(true, "queue type not recognized!");
3087                 return 0xffffffff;
3088         };
3089 }
3090
3091 void set_queue_snapshot_entry(struct queue *q,
3092                               uint64_t exception_clear_mask,
3093                               struct kfd_queue_snapshot_entry *qss_entry)
3094 {
3095         qss_entry->ring_base_address = q->properties.queue_address;
3096         qss_entry->write_pointer_address = (uint64_t)q->properties.write_ptr;
3097         qss_entry->read_pointer_address = (uint64_t)q->properties.read_ptr;
3098         qss_entry->ctx_save_restore_address =
3099                                 q->properties.ctx_save_restore_area_address;
3100         qss_entry->ctx_save_restore_area_size =
3101                                 q->properties.ctx_save_restore_area_size;
3102         qss_entry->exception_status = q->properties.exception_status;
3103         qss_entry->queue_id = q->properties.queue_id;
3104         qss_entry->gpu_id = q->device->id;
3105         qss_entry->ring_size = (uint32_t)q->properties.queue_size;
3106         qss_entry->queue_type = set_queue_type_for_user(&q->properties);
3107         q->properties.exception_status &= ~exception_clear_mask;
3108 }
3109
3110 int debug_lock_and_unmap(struct device_queue_manager *dqm)
3111 {
3112         struct device *dev = dqm->dev->adev->dev;
3113         int r;
3114
3115         if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
3116                 dev_err(dev, "Unsupported on sched_policy: %i\n", dqm->sched_policy);
3117                 return -EINVAL;
3118         }
3119
3120         if (!kfd_dbg_is_per_vmid_supported(dqm->dev))
3121                 return 0;
3122
3123         dqm_lock(dqm);
3124
3125         r = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0, 0, false);
3126         if (r)
3127                 dqm_unlock(dqm);
3128
3129         return r;
3130 }
3131
3132 int debug_map_and_unlock(struct device_queue_manager *dqm)
3133 {
3134         struct device *dev = dqm->dev->adev->dev;
3135         int r;
3136
3137         if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
3138                 dev_err(dev, "Unsupported on sched_policy: %i\n", dqm->sched_policy);
3139                 return -EINVAL;
3140         }
3141
3142         if (!kfd_dbg_is_per_vmid_supported(dqm->dev))
3143                 return 0;
3144
3145         r = map_queues_cpsch(dqm);
3146
3147         dqm_unlock(dqm);
3148
3149         return r;
3150 }
3151
3152 int debug_refresh_runlist(struct device_queue_manager *dqm)
3153 {
3154         int r = debug_lock_and_unmap(dqm);
3155
3156         if (r)
3157                 return r;
3158
3159         return debug_map_and_unlock(dqm);
3160 }
3161
3162 #if defined(CONFIG_DEBUG_FS)
3163
3164 static void seq_reg_dump(struct seq_file *m,
3165                          uint32_t (*dump)[2], uint32_t n_regs)
3166 {
3167         uint32_t i, count;
3168
3169         for (i = 0, count = 0; i < n_regs; i++) {
3170                 if (count == 0 ||
3171                     dump[i-1][0] + sizeof(uint32_t) != dump[i][0]) {
3172                         seq_printf(m, "%s    %08x: %08x",
3173                                    i ? "\n" : "",
3174                                    dump[i][0], dump[i][1]);
3175                         count = 7;
3176                 } else {
3177                         seq_printf(m, " %08x", dump[i][1]);
3178                         count--;
3179                 }
3180         }
3181
3182         seq_puts(m, "\n");
3183 }
3184
3185 int dqm_debugfs_hqds(struct seq_file *m, void *data)
3186 {
3187         struct device_queue_manager *dqm = data;
3188         uint32_t xcc_mask = dqm->dev->xcc_mask;
3189         uint32_t (*dump)[2], n_regs;
3190         int pipe, queue;
3191         int r = 0, xcc_id;
3192         uint32_t sdma_engine_start;
3193
3194         if (!dqm->sched_running) {
3195                 seq_puts(m, " Device is stopped\n");
3196                 return 0;
3197         }
3198
3199         for_each_inst(xcc_id, xcc_mask) {
3200                 r = dqm->dev->kfd2kgd->hqd_dump(dqm->dev->adev,
3201                                                 KFD_CIK_HIQ_PIPE,
3202                                                 KFD_CIK_HIQ_QUEUE, &dump,
3203                                                 &n_regs, xcc_id);
3204                 if (!r) {
3205                         seq_printf(
3206                                 m,
3207                                 "   Inst %d, HIQ on MEC %d Pipe %d Queue %d\n",
3208                                 xcc_id,
3209                                 KFD_CIK_HIQ_PIPE / get_pipes_per_mec(dqm) + 1,
3210                                 KFD_CIK_HIQ_PIPE % get_pipes_per_mec(dqm),
3211                                 KFD_CIK_HIQ_QUEUE);
3212                         seq_reg_dump(m, dump, n_regs);
3213
3214                         kfree(dump);
3215                 }
3216
3217                 for (pipe = 0; pipe < get_pipes_per_mec(dqm); pipe++) {
3218                         int pipe_offset = pipe * get_queues_per_pipe(dqm);
3219
3220                         for (queue = 0; queue < get_queues_per_pipe(dqm); queue++) {
3221                                 if (!test_bit(pipe_offset + queue,
3222                                       dqm->dev->kfd->shared_resources.cp_queue_bitmap))
3223                                         continue;
3224
3225                                 r = dqm->dev->kfd2kgd->hqd_dump(dqm->dev->adev,
3226                                                                 pipe, queue,
3227                                                                 &dump, &n_regs,
3228                                                                 xcc_id);
3229                                 if (r)
3230                                         break;
3231
3232                                 seq_printf(m,
3233                                            " Inst %d,  CP Pipe %d, Queue %d\n",
3234                                            xcc_id, pipe, queue);
3235                                 seq_reg_dump(m, dump, n_regs);
3236
3237                                 kfree(dump);
3238                         }
3239                 }
3240         }
3241
3242         sdma_engine_start = dqm->dev->node_id * get_num_all_sdma_engines(dqm);
3243         for (pipe = sdma_engine_start;
3244              pipe < (sdma_engine_start + get_num_all_sdma_engines(dqm));
3245              pipe++) {
3246                 for (queue = 0;
3247                      queue < dqm->dev->kfd->device_info.num_sdma_queues_per_engine;
3248                      queue++) {
3249                         r = dqm->dev->kfd2kgd->hqd_sdma_dump(
3250                                 dqm->dev->adev, pipe, queue, &dump, &n_regs);
3251                         if (r)
3252                                 break;
3253
3254                         seq_printf(m, "  SDMA Engine %d, RLC %d\n",
3255                                   pipe, queue);
3256                         seq_reg_dump(m, dump, n_regs);
3257
3258                         kfree(dump);
3259                 }
3260         }
3261
3262         return r;
3263 }
3264
3265 int dqm_debugfs_hang_hws(struct device_queue_manager *dqm)
3266 {
3267         int r = 0;
3268
3269         dqm_lock(dqm);
3270         r = pm_debugfs_hang_hws(&dqm->packet_mgr);
3271         if (r) {
3272                 dqm_unlock(dqm);
3273                 return r;
3274         }
3275         dqm->active_runlist = true;
3276         r = execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES,
3277                                 0, USE_DEFAULT_GRACE_PERIOD);
3278         dqm_unlock(dqm);
3279
3280         return r;
3281 }
3282
3283 #endif