drivers/gpu/drm/amd/amdkfd/kfd_device.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 #include <linux/bsearch.h>
  25 #include <linux/pci.h>
  26 #include <linux/slab.h>
  27 #include "kfd_priv.h"
  28 #include "kfd_device_queue_manager.h"
  29 #include "kfd_pm4_headers_vi.h"
  30 #include "kfd_pm4_headers_aldebaran.h"
  31 #include "cwsr_trap_handler.h"
  32 #include "kfd_iommu.h"
  33 #include "amdgpu_amdkfd.h"
  34 #include "kfd_smi_events.h"
  35 #include "kfd_migrate.h"
  36 #include "amdgpu.h"
  37
  38 #define MQD_SIZE_ALIGNED 768
  39
  40 /*
  41  * kfd_locked is used to lock the kfd driver during suspend or reset
  42  * once locked, kfd driver will stop any further GPU execution.
  43  * create process (open) will return -EAGAIN.
  44  */
  45 static atomic_t kfd_locked = ATOMIC_INIT(0);
  46
  47 #ifdef CONFIG_DRM_AMDGPU_CIK
  48 extern const struct kfd2kgd_calls gfx_v7_kfd2kgd;
  49 #endif
  50 extern const struct kfd2kgd_calls gfx_v8_kfd2kgd;
  51 extern const struct kfd2kgd_calls gfx_v9_kfd2kgd;
  52 extern const struct kfd2kgd_calls arcturus_kfd2kgd;
  53 extern const struct kfd2kgd_calls aldebaran_kfd2kgd;
  54 extern const struct kfd2kgd_calls gfx_v10_kfd2kgd;
  55 extern const struct kfd2kgd_calls gfx_v10_3_kfd2kgd;
  56
  57 static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
  58                                 unsigned int chunk_size);
  59 static void kfd_gtt_sa_fini(struct kfd_dev *kfd);
  60
  61 static int kfd_resume(struct kfd_dev *kfd);
  62
  63 static void kfd_device_info_set_sdma_queue_num(struct kfd_dev *kfd)
  64 {
  65         uint32_t sdma_version = kfd->adev->ip_versions[SDMA0_HWIP][0];
  66
  67         switch (sdma_version) {
  68         case IP_VERSION(4, 0, 0):/* VEGA10 */
  69         case IP_VERSION(4, 0, 1):/* VEGA12 */
  70         case IP_VERSION(4, 1, 0):/* RAVEN */
  71         case IP_VERSION(4, 1, 1):/* RAVEN */
  72         case IP_VERSION(4, 1, 2):/* RENOIR */
  73         case IP_VERSION(5, 2, 1):/* VANGOGH */
  74         case IP_VERSION(5, 2, 3):/* YELLOW_CARP */
  75                 kfd->device_info.num_sdma_queues_per_engine = 2;
  76                 break;
  77         case IP_VERSION(4, 2, 0):/* VEGA20 */
  78         case IP_VERSION(4, 2, 2):/* ARCTURUS */
  79         case IP_VERSION(4, 4, 0):/* ALDEBARAN */
  80         case IP_VERSION(5, 0, 0):/* NAVI10 */
  81         case IP_VERSION(5, 0, 1):/* CYAN_SKILLFISH */
  82         case IP_VERSION(5, 0, 2):/* NAVI14 */
  83         case IP_VERSION(5, 0, 5):/* NAVI12 */
  84         case IP_VERSION(5, 2, 0):/* SIENNA_CICHLID */
  85         case IP_VERSION(5, 2, 2):/* NAVY_FLOUNDER */
  86         case IP_VERSION(5, 2, 4):/* DIMGREY_CAVEFISH */
  87         case IP_VERSION(5, 2, 5):/* BEIGE_GOBY */
  88                 kfd->device_info.num_sdma_queues_per_engine = 8;
  89                 break;
  90         default:
  91                 dev_warn(kfd_device,
  92                         "Default sdma queue per engine(8) is set due to mismatch of sdma ip block(SDMA_HWIP:0x%x).\n",
  93                         sdma_version);
  94                 kfd->device_info.num_sdma_queues_per_engine = 8;
  95         }
  96 }
  97
  98 static void kfd_device_info_set_event_interrupt_class(struct kfd_dev *kfd)
  99 {
 100         uint32_t gc_version = KFD_GC_VERSION(kfd);
 101
 102         switch (gc_version) {
 103         case IP_VERSION(9, 0, 1): /* VEGA10 */
 104         case IP_VERSION(9, 1, 0): /* RAVEN */
 105         case IP_VERSION(9, 2, 1): /* VEGA12 */
 106         case IP_VERSION(9, 2, 2): /* RAVEN */
 107         case IP_VERSION(9, 3, 0): /* RENOIR */
 108         case IP_VERSION(9, 4, 0): /* VEGA20 */
 109         case IP_VERSION(9, 4, 1): /* ARCTURUS */
 110         case IP_VERSION(9, 4, 2): /* ALDEBARAN */
 111         case IP_VERSION(10, 3, 1): /* VANGOGH */
 112         case IP_VERSION(10, 3, 3): /* YELLOW_CARP */
 113         case IP_VERSION(10, 1, 3): /* CYAN_SKILLFISH */
 114         case IP_VERSION(10, 1, 4):
 115         case IP_VERSION(10, 1, 10): /* NAVI10 */
 116         case IP_VERSION(10, 1, 2): /* NAVI12 */
 117         case IP_VERSION(10, 1, 1): /* NAVI14 */
 118         case IP_VERSION(10, 3, 0): /* SIENNA_CICHLID */
 119         case IP_VERSION(10, 3, 2): /* NAVY_FLOUNDER */
 120         case IP_VERSION(10, 3, 4): /* DIMGREY_CAVEFISH */
 121         case IP_VERSION(10, 3, 5): /* BEIGE_GOBY */
 122                 kfd->device_info.event_interrupt_class = &event_interrupt_class_v9;
 123                 break;
 124         default:
 125                 dev_warn(kfd_device, "v9 event interrupt handler is set due to "
 126                         "mismatch of gc ip block(GC_HWIP:0x%x).\n", gc_version);
 127                 kfd->device_info.event_interrupt_class = &event_interrupt_class_v9;
 128         }
 129 }
 130
 131 static void kfd_device_info_init(struct kfd_dev *kfd,
 132                                  bool vf, uint32_t gfx_target_version)
 133 {
 134         uint32_t gc_version = KFD_GC_VERSION(kfd);
 135         uint32_t asic_type = kfd->adev->asic_type;
 136
 137         kfd->device_info.max_pasid_bits = 16;
 138         kfd->device_info.max_no_of_hqd = 24;
 139         kfd->device_info.num_of_watch_points = 4;
 140         kfd->device_info.mqd_size_aligned = MQD_SIZE_ALIGNED;
 141         kfd->device_info.gfx_target_version = gfx_target_version;
 142
 143         if (KFD_IS_SOC15(kfd)) {
 144                 kfd->device_info.doorbell_size = 8;
 145                 kfd->device_info.ih_ring_entry_size = 8 * sizeof(uint32_t);
 146                 kfd->device_info.supports_cwsr = true;
 147
 148                 kfd_device_info_set_sdma_queue_num(kfd);
 149
 150                 kfd_device_info_set_event_interrupt_class(kfd);
 151
 152                 /* Raven */
 153                 if (gc_version == IP_VERSION(9, 1, 0) ||
 154                     gc_version == IP_VERSION(9, 2, 2))
 155                         kfd->device_info.needs_iommu_device = true;
 156
 157                 if (gc_version < IP_VERSION(11, 0, 0)) {
 158                         /* Navi2x+, Navi1x+ */
 159                         if (gc_version >= IP_VERSION(10, 3, 0))
 160                                 kfd->device_info.no_atomic_fw_version = 92;
 161                         else if (gc_version >= IP_VERSION(10, 1, 1))
 162                                 kfd->device_info.no_atomic_fw_version = 145;
 163
 164                         /* Navi1x+ */
 165                         if (gc_version >= IP_VERSION(10, 1, 1))
 166                                 kfd->device_info.needs_pci_atomics = true;
 167                 }
 168         } else {
 169                 kfd->device_info.doorbell_size = 4;
 170                 kfd->device_info.ih_ring_entry_size = 4 * sizeof(uint32_t);
 171                 kfd->device_info.event_interrupt_class = &event_interrupt_class_cik;
 172                 kfd->device_info.num_sdma_queues_per_engine = 2;
 173
 174                 if (asic_type != CHIP_KAVERI &&
 175                     asic_type != CHIP_HAWAII &&
 176                     asic_type != CHIP_TONGA)
 177                         kfd->device_info.supports_cwsr = true;
 178
 179                 if (asic_type == CHIP_KAVERI ||
 180                     asic_type == CHIP_CARRIZO)
 181                         kfd->device_info.needs_iommu_device = true;
 182
 183                 if (asic_type != CHIP_HAWAII && !vf)
 184                         kfd->device_info.needs_pci_atomics = true;
 185         }
 186 }
 187
 188 struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf)
 189 {
 190         struct kfd_dev *kfd = NULL;
 191         const struct kfd2kgd_calls *f2g = NULL;
 192         struct pci_dev *pdev = adev->pdev;
 193         uint32_t gfx_target_version = 0;
 194
 195         switch (adev->asic_type) {
 196 #ifdef KFD_SUPPORT_IOMMU_V2
 197 #ifdef CONFIG_DRM_AMDGPU_CIK
 198         case CHIP_KAVERI:
 199                 gfx_target_version = 70000;
 200                 if (!vf)
 201                         f2g = &gfx_v7_kfd2kgd;
 202                 break;
 203 #endif
 204         case CHIP_CARRIZO:
 205                 gfx_target_version = 80001;
 206                 if (!vf)
 207                         f2g = &gfx_v8_kfd2kgd;
 208                 break;
 209 #endif
 210 #ifdef CONFIG_DRM_AMDGPU_CIK
 211         case CHIP_HAWAII:
 212                 gfx_target_version = 70001;
 213                 if (!amdgpu_exp_hw_support)
 214                         pr_info(
 215         "KFD support on Hawaii is experimental. See modparam exp_hw_support\n"
 216                                 );
 217                 else if (!vf)
 218                         f2g = &gfx_v7_kfd2kgd;
 219                 break;
 220 #endif
 221         case CHIP_TONGA:
 222                 gfx_target_version = 80002;
 223                 if (!vf)
 224                         f2g = &gfx_v8_kfd2kgd;
 225                 break;
 226         case CHIP_FIJI:
 227                 gfx_target_version = 80003;
 228                 f2g = &gfx_v8_kfd2kgd;
 229                 break;
 230         case CHIP_POLARIS10:
 231                 gfx_target_version = 80003;
 232                 f2g = &gfx_v8_kfd2kgd;
 233                 break;
 234         case CHIP_POLARIS11:
 235                 gfx_target_version = 80003;
 236                 if (!vf)
 237                         f2g = &gfx_v8_kfd2kgd;
 238                 break;
 239         case CHIP_POLARIS12:
 240                 gfx_target_version = 80003;
 241                 if (!vf)
 242                         f2g = &gfx_v8_kfd2kgd;
 243                 break;
 244         case CHIP_VEGAM:
 245                 gfx_target_version = 80003;
 246                 if (!vf)
 247                         f2g = &gfx_v8_kfd2kgd;
 248                 break;
 249         default:
 250                 switch (adev->ip_versions[GC_HWIP][0]) {
 251                 /* Vega 10 */
 252                 case IP_VERSION(9, 0, 1):
 253                         gfx_target_version = 90000;
 254                         f2g = &gfx_v9_kfd2kgd;
 255                         break;
 256 #ifdef KFD_SUPPORT_IOMMU_V2
 257                 /* Raven */
 258                 case IP_VERSION(9, 1, 0):
 259                 case IP_VERSION(9, 2, 2):
 260                         gfx_target_version = 90002;
 261                         if (!vf)
 262                                 f2g = &gfx_v9_kfd2kgd;
 263                         break;
 264 #endif
 265                 /* Vega12 */
 266                 case IP_VERSION(9, 2, 1):
 267                         gfx_target_version = 90004;
 268                         if (!vf)
 269                                 f2g = &gfx_v9_kfd2kgd;
 270                         break;
 271                 /* Renoir */
 272                 case IP_VERSION(9, 3, 0):
 273                         gfx_target_version = 90012;
 274                         if (!vf)
 275                                 f2g = &gfx_v9_kfd2kgd;
 276                         break;
 277                 /* Vega20 */
 278                 case IP_VERSION(9, 4, 0):
 279                         gfx_target_version = 90006;
 280                         if (!vf)
 281                                 f2g = &gfx_v9_kfd2kgd;
 282                         break;
 283                 /* Arcturus */
 284                 case IP_VERSION(9, 4, 1):
 285                         gfx_target_version = 90008;
 286                         f2g = &arcturus_kfd2kgd;
 287                         break;
 288                 /* Aldebaran */
 289                 case IP_VERSION(9, 4, 2):
 290                         gfx_target_version = 90010;
 291                         f2g = &aldebaran_kfd2kgd;
 292                         break;
 293                 /* Navi10 */
 294                 case IP_VERSION(10, 1, 10):
 295                         gfx_target_version = 100100;
 296                         if (!vf)
 297                                 f2g = &gfx_v10_kfd2kgd;
 298                         break;
 299                 /* Navi12 */
 300                 case IP_VERSION(10, 1, 2):
 301                         gfx_target_version = 100101;
 302                         f2g = &gfx_v10_kfd2kgd;
 303                         break;
 304                 /* Navi14 */
 305                 case IP_VERSION(10, 1, 1):
 306                         gfx_target_version = 100102;
 307                         if (!vf)
 308                                 f2g = &gfx_v10_kfd2kgd;
 309                         break;
 310                 /* Cyan Skillfish */
 311                 case IP_VERSION(10, 1, 3):
 312                 case IP_VERSION(10, 1, 4):
 313                         gfx_target_version = 100103;
 314                         if (!vf)
 315                                 f2g = &gfx_v10_kfd2kgd;
 316                         break;
 317                 /* Sienna Cichlid */
 318                 case IP_VERSION(10, 3, 0):
 319                         gfx_target_version = 100300;
 320                         f2g = &gfx_v10_3_kfd2kgd;
 321                         break;
 322                 /* Navy Flounder */
 323                 case IP_VERSION(10, 3, 2):
 324                         gfx_target_version = 100301;
 325                         f2g = &gfx_v10_3_kfd2kgd;
 326                         break;
 327                 /* Van Gogh */
 328                 case IP_VERSION(10, 3, 1):
 329                         gfx_target_version = 100303;
 330                         if (!vf)
 331                                 f2g = &gfx_v10_3_kfd2kgd;
 332                         break;
 333                 /* Dimgrey Cavefish */
 334                 case IP_VERSION(10, 3, 4):
 335                         gfx_target_version = 100302;
 336                         f2g = &gfx_v10_3_kfd2kgd;
 337                         break;
 338                 /* Beige Goby */
 339                 case IP_VERSION(10, 3, 5):
 340                         gfx_target_version = 100304;
 341                         f2g = &gfx_v10_3_kfd2kgd;
 342                         break;
 343                 /* Yellow Carp */
 344                 case IP_VERSION(10, 3, 3):
 345                         gfx_target_version = 100305;
 346                         if (!vf)
 347                                 f2g = &gfx_v10_3_kfd2kgd;
 348                         break;
 349                 default:
 350                         break;
 351                 }
 352                 break;
 353         }
 354
 355         if (!f2g) {
 356                 if (adev->ip_versions[GC_HWIP][0])
 357                         dev_err(kfd_device, "GC IP %06x %s not supported in kfd\n",
 358                                 adev->ip_versions[GC_HWIP][0], vf ? "VF" : "");
 359                 else
 360                         dev_err(kfd_device, "%s %s not supported in kfd\n",
 361                                 amdgpu_asic_name[adev->asic_type], vf ? "VF" : "");
 362                 return NULL;
 363         }
 364
 365         kfd = kzalloc(sizeof(*kfd), GFP_KERNEL);
 366         if (!kfd)
 367                 return NULL;
 368
 369         kfd->adev = adev;
 370         kfd_device_info_init(kfd, vf, gfx_target_version);
 371         kfd->pdev = pdev;
 372         kfd->init_complete = false;
 373         kfd->kfd2kgd = f2g;
 374         atomic_set(&kfd->compute_profile, 0);
 375
 376         mutex_init(&kfd->doorbell_mutex);
 377         memset(&kfd->doorbell_available_index, 0,
 378                 sizeof(kfd->doorbell_available_index));
 379
 380         atomic_set(&kfd->sram_ecc_flag, 0);
 381
 382         ida_init(&kfd->doorbell_ida);
 383
 384         return kfd;
 385 }
 386
 387 static void kfd_cwsr_init(struct kfd_dev *kfd)
 388 {
 389         if (cwsr_enable && kfd->device_info.supports_cwsr) {
 390                 if (KFD_GC_VERSION(kfd) < IP_VERSION(9, 0, 1)) {
 391                         BUILD_BUG_ON(sizeof(cwsr_trap_gfx8_hex) > PAGE_SIZE);
 392                         kfd->cwsr_isa = cwsr_trap_gfx8_hex;
 393                         kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx8_hex);
 394                 } else if (KFD_GC_VERSION(kfd) == IP_VERSION(9, 4, 1)) {
 395                         BUILD_BUG_ON(sizeof(cwsr_trap_arcturus_hex) > PAGE_SIZE);
 396                         kfd->cwsr_isa = cwsr_trap_arcturus_hex;
 397                         kfd->cwsr_isa_size = sizeof(cwsr_trap_arcturus_hex);
 398                 } else if (KFD_GC_VERSION(kfd) == IP_VERSION(9, 4, 2)) {
 399                         BUILD_BUG_ON(sizeof(cwsr_trap_aldebaran_hex) > PAGE_SIZE);
 400                         kfd->cwsr_isa = cwsr_trap_aldebaran_hex;
 401                         kfd->cwsr_isa_size = sizeof(cwsr_trap_aldebaran_hex);
 402                 } else if (KFD_GC_VERSION(kfd) < IP_VERSION(10, 1, 1)) {
 403                         BUILD_BUG_ON(sizeof(cwsr_trap_gfx9_hex) > PAGE_SIZE);
 404                         kfd->cwsr_isa = cwsr_trap_gfx9_hex;
 405                         kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx9_hex);
 406                 } else if (KFD_GC_VERSION(kfd) < IP_VERSION(10, 3, 0)) {
 407                         BUILD_BUG_ON(sizeof(cwsr_trap_nv1x_hex) > PAGE_SIZE);
 408                         kfd->cwsr_isa = cwsr_trap_nv1x_hex;
 409                         kfd->cwsr_isa_size = sizeof(cwsr_trap_nv1x_hex);
 410                 } else {
 411                         BUILD_BUG_ON(sizeof(cwsr_trap_gfx10_hex) > PAGE_SIZE);
 412                         kfd->cwsr_isa = cwsr_trap_gfx10_hex;
 413                         kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx10_hex);
 414                 }
 415
 416                 kfd->cwsr_enabled = true;
 417         }
 418 }
 419
 420 static int kfd_gws_init(struct kfd_dev *kfd)
 421 {
 422         int ret = 0;
 423
 424         if (kfd->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS)
 425                 return 0;
 426
 427         if (hws_gws_support || (KFD_IS_SOC15(kfd) &&
 428                 ((KFD_GC_VERSION(kfd) == IP_VERSION(9, 0, 1)
 429                         && kfd->mec2_fw_version >= 0x81b3) ||
 430                 (KFD_GC_VERSION(kfd) <= IP_VERSION(9, 4, 0)
 431                         && kfd->mec2_fw_version >= 0x1b3)  ||
 432                 (KFD_GC_VERSION(kfd) == IP_VERSION(9, 4, 1)
 433                         && kfd->mec2_fw_version >= 0x30)   ||
 434                 (KFD_GC_VERSION(kfd) == IP_VERSION(9, 4, 2)
 435                         && kfd->mec2_fw_version >= 0x28))))
 436                 ret = amdgpu_amdkfd_alloc_gws(kfd->adev,
 437                                 kfd->adev->gds.gws_size, &kfd->gws);
 438
 439         return ret;
 440 }
 441
 442 static void kfd_smi_init(struct kfd_dev *dev)
 443 {
 444         INIT_LIST_HEAD(&dev->smi_clients);
 445         spin_lock_init(&dev->smi_lock);
 446 }
 447
 448 bool kgd2kfd_device_init(struct kfd_dev *kfd,
 449                          struct drm_device *ddev,
 450                          const struct kgd2kfd_shared_resources *gpu_resources)
 451 {
 452         unsigned int size, map_process_packet_size;
 453
 454         kfd->ddev = ddev;
 455         kfd->mec_fw_version = amdgpu_amdkfd_get_fw_version(kfd->adev,
 456                         KGD_ENGINE_MEC1);
 457         kfd->mec2_fw_version = amdgpu_amdkfd_get_fw_version(kfd->adev,
 458                         KGD_ENGINE_MEC2);
 459         kfd->sdma_fw_version = amdgpu_amdkfd_get_fw_version(kfd->adev,
 460                         KGD_ENGINE_SDMA1);
 461         kfd->shared_resources = *gpu_resources;
 462
 463         kfd->vm_info.first_vmid_kfd = ffs(gpu_resources->compute_vmid_bitmap)-1;
 464         kfd->vm_info.last_vmid_kfd = fls(gpu_resources->compute_vmid_bitmap)-1;
 465         kfd->vm_info.vmid_num_kfd = kfd->vm_info.last_vmid_kfd
 466                         - kfd->vm_info.first_vmid_kfd + 1;
 467
 468         /* Allow BIF to recode atomics to PCIe 3.0 AtomicOps.
 469          * 32 and 64-bit requests are possible and must be
 470          * supported.
 471          */
 472         kfd->pci_atomic_requested = amdgpu_amdkfd_have_atomics_support(kfd->adev);
 473         if (!kfd->pci_atomic_requested &&
 474             kfd->device_info.needs_pci_atomics &&
 475             (!kfd->device_info.no_atomic_fw_version ||
 476              kfd->mec_fw_version < kfd->device_info.no_atomic_fw_version)) {
 477                 dev_info(kfd_device,
 478                          "skipped device %x:%x, PCI rejects atomics %d<%d\n",
 479                          kfd->pdev->vendor, kfd->pdev->device,
 480                          kfd->mec_fw_version,
 481                          kfd->device_info.no_atomic_fw_version);
 482                 return false;
 483         }
 484
 485         /* Verify module parameters regarding mapped process number*/
 486         if ((hws_max_conc_proc < 0)
 487                         || (hws_max_conc_proc > kfd->vm_info.vmid_num_kfd)) {
 488                 dev_err(kfd_device,
 489                         "hws_max_conc_proc %d must be between 0 and %d, use %d instead\n",
 490                         hws_max_conc_proc, kfd->vm_info.vmid_num_kfd,
 491                         kfd->vm_info.vmid_num_kfd);
 492                 kfd->max_proc_per_quantum = kfd->vm_info.vmid_num_kfd;
 493         } else
 494                 kfd->max_proc_per_quantum = hws_max_conc_proc;
 495
 496         /* calculate max size of mqds needed for queues */
 497         size = max_num_of_queues_per_device *
 498                         kfd->device_info.mqd_size_aligned;
 499
 500         /*
 501          * calculate max size of runlist packet.
 502          * There can be only 2 packets at once
 503          */
 504         map_process_packet_size = KFD_GC_VERSION(kfd) == IP_VERSION(9, 4, 2) ?
 505                                 sizeof(struct pm4_mes_map_process_aldebaran) :
 506                                 sizeof(struct pm4_mes_map_process);
 507         size += (KFD_MAX_NUM_OF_PROCESSES * map_process_packet_size +
 508                 max_num_of_queues_per_device * sizeof(struct pm4_mes_map_queues)
 509                 + sizeof(struct pm4_mes_runlist)) * 2;
 510
 511         /* Add size of HIQ & DIQ */
 512         size += KFD_KERNEL_QUEUE_SIZE * 2;
 513
 514         /* add another 512KB for all other allocations on gart (HPD, fences) */
 515         size += 512 * 1024;
 516
 517         if (amdgpu_amdkfd_alloc_gtt_mem(
 518                         kfd->adev, size, &kfd->gtt_mem,
 519                         &kfd->gtt_start_gpu_addr, &kfd->gtt_start_cpu_ptr,
 520                         false)) {
 521                 dev_err(kfd_device, "Could not allocate %d bytes\n", size);
 522                 goto alloc_gtt_mem_failure;
 523         }
 524
 525         dev_info(kfd_device, "Allocated %d bytes on gart\n", size);
 526
 527         /* Initialize GTT sa with 512 byte chunk size */
 528         if (kfd_gtt_sa_init(kfd, size, 512) != 0) {
 529                 dev_err(kfd_device, "Error initializing gtt sub-allocator\n");
 530                 goto kfd_gtt_sa_init_error;
 531         }
 532
 533         if (kfd_doorbell_init(kfd)) {
 534                 dev_err(kfd_device,
 535                         "Error initializing doorbell aperture\n");
 536                 goto kfd_doorbell_error;
 537         }
 538
 539         kfd->hive_id = kfd->adev->gmc.xgmi.hive_id;
 540
 541         kfd->noretry = kfd->adev->gmc.noretry;
 542
 543         if (kfd_interrupt_init(kfd)) {
 544                 dev_err(kfd_device, "Error initializing interrupts\n");
 545                 goto kfd_interrupt_error;
 546         }
 547
 548         kfd->dqm = device_queue_manager_init(kfd);
 549         if (!kfd->dqm) {
 550                 dev_err(kfd_device, "Error initializing queue manager\n");
 551                 goto device_queue_manager_error;
 552         }
 553
 554         /* If supported on this device, allocate global GWS that is shared
 555          * by all KFD processes
 556          */
 557         if (kfd_gws_init(kfd)) {
 558                 dev_err(kfd_device, "Could not allocate %d gws\n",
 559                         kfd->adev->gds.gws_size);
 560                 goto gws_error;
 561         }
 562
 563         /* If CRAT is broken, won't set iommu enabled */
 564         kfd_double_confirm_iommu_support(kfd);
 565
 566         if (kfd_iommu_device_init(kfd)) {
 567                 kfd->use_iommu_v2 = false;
 568                 dev_err(kfd_device, "Error initializing iommuv2\n");
 569                 goto device_iommu_error;
 570         }
 571
 572         kfd_cwsr_init(kfd);
 573
 574         svm_migrate_init(kfd->adev);
 575
 576         if (kgd2kfd_resume_iommu(kfd))
 577                 goto device_iommu_error;
 578
 579         if (kfd_resume(kfd))
 580                 goto kfd_resume_error;
 581
 582         if (kfd_topology_add_device(kfd)) {
 583                 dev_err(kfd_device, "Error adding device to topology\n");
 584                 goto kfd_topology_add_device_error;
 585         }
 586
 587         kfd_smi_init(kfd);
 588
 589         kfd->init_complete = true;
 590         dev_info(kfd_device, "added device %x:%x\n", kfd->pdev->vendor,
 591                  kfd->pdev->device);
 592
 593         pr_debug("Starting kfd with the following scheduling policy %d\n",
 594                 kfd->dqm->sched_policy);
 595
 596         goto out;
 597
 598 kfd_topology_add_device_error:
 599 kfd_resume_error:
 600 device_iommu_error:
 601 gws_error:
 602         device_queue_manager_uninit(kfd->dqm);
 603 device_queue_manager_error:
 604         kfd_interrupt_exit(kfd);
 605 kfd_interrupt_error:
 606         kfd_doorbell_fini(kfd);
 607 kfd_doorbell_error:
 608         kfd_gtt_sa_fini(kfd);
 609 kfd_gtt_sa_init_error:
 610         amdgpu_amdkfd_free_gtt_mem(kfd->adev, kfd->gtt_mem);
 611 alloc_gtt_mem_failure:
 612         if (kfd->gws)
 613                 amdgpu_amdkfd_free_gws(kfd->adev, kfd->gws);
 614         dev_err(kfd_device,
 615                 "device %x:%x NOT added due to errors\n",
 616                 kfd->pdev->vendor, kfd->pdev->device);
 617 out:
 618         return kfd->init_complete;
 619 }
 620
 621 void kgd2kfd_device_exit(struct kfd_dev *kfd)
 622 {
 623         if (kfd->init_complete) {
 624                 device_queue_manager_uninit(kfd->dqm);
 625                 kfd_interrupt_exit(kfd);
 626                 kfd_topology_remove_device(kfd);
 627                 kfd_doorbell_fini(kfd);
 628                 ida_destroy(&kfd->doorbell_ida);
 629                 kfd_gtt_sa_fini(kfd);
 630                 amdgpu_amdkfd_free_gtt_mem(kfd->adev, kfd->gtt_mem);
 631                 if (kfd->gws)
 632                         amdgpu_amdkfd_free_gws(kfd->adev, kfd->gws);
 633         }
 634
 635         kfree(kfd);
 636 }
 637
 638 int kgd2kfd_pre_reset(struct kfd_dev *kfd)
 639 {
 640         if (!kfd->init_complete)
 641                 return 0;
 642
 643         kfd_smi_event_update_gpu_reset(kfd, false);
 644
 645         kfd->dqm->ops.pre_reset(kfd->dqm);
 646
 647         kgd2kfd_suspend(kfd, false);
 648
 649         kfd_signal_reset_event(kfd);
 650         return 0;
 651 }
 652
 653 /*
 654  * Fix me. KFD won't be able to resume existing process for now.
 655  * We will keep all existing process in a evicted state and
 656  * wait the process to be terminated.
 657  */
 658
 659 int kgd2kfd_post_reset(struct kfd_dev *kfd)
 660 {
 661         int ret;
 662
 663         if (!kfd->init_complete)
 664                 return 0;
 665
 666         ret = kfd_resume(kfd);
 667         if (ret)
 668                 return ret;
 669         atomic_dec(&kfd_locked);
 670
 671         atomic_set(&kfd->sram_ecc_flag, 0);
 672
 673         kfd_smi_event_update_gpu_reset(kfd, true);
 674
 675         return 0;
 676 }
 677
 678 bool kfd_is_locked(void)
 679 {
 680         return  (atomic_read(&kfd_locked) > 0);
 681 }
 682
 683 void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm)
 684 {
 685         if (!kfd->init_complete)
 686                 return;
 687
 688         /* for runtime suspend, skip locking kfd */
 689         if (!run_pm) {
 690                 /* For first KFD device suspend all the KFD processes */
 691                 if (atomic_inc_return(&kfd_locked) == 1)
 692                         kfd_suspend_all_processes();
 693         }
 694
 695         kfd->dqm->ops.stop(kfd->dqm);
 696         kfd_iommu_suspend(kfd);
 697 }
 698
 699 int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm)
 700 {
 701         int ret, count;
 702
 703         if (!kfd->init_complete)
 704                 return 0;
 705
 706         ret = kfd_resume(kfd);
 707         if (ret)
 708                 return ret;
 709
 710         /* for runtime resume, skip unlocking kfd */
 711         if (!run_pm) {
 712                 count = atomic_dec_return(&kfd_locked);
 713                 WARN_ONCE(count < 0, "KFD suspend / resume ref. error");
 714                 if (count == 0)
 715                         ret = kfd_resume_all_processes();
 716         }
 717
 718         return ret;
 719 }
 720
 721 int kgd2kfd_resume_iommu(struct kfd_dev *kfd)
 722 {
 723         int err = 0;
 724
 725         err = kfd_iommu_resume(kfd);
 726         if (err)
 727                 dev_err(kfd_device,
 728                         "Failed to resume IOMMU for device %x:%x\n",
 729                         kfd->pdev->vendor, kfd->pdev->device);
 730         return err;
 731 }
 732
 733 static int kfd_resume(struct kfd_dev *kfd)
 734 {
 735         int err = 0;
 736
 737         err = kfd->dqm->ops.start(kfd->dqm);
 738         if (err)
 739                 dev_err(kfd_device,
 740                         "Error starting queue manager for device %x:%x\n",
 741                         kfd->pdev->vendor, kfd->pdev->device);
 742
 743         return err;
 744 }
 745
 746 static inline void kfd_queue_work(struct workqueue_struct *wq,
 747                                   struct work_struct *work)
 748 {
 749         int cpu, new_cpu;
 750
 751         cpu = new_cpu = smp_processor_id();
 752         do {
 753                 new_cpu = cpumask_next(new_cpu, cpu_online_mask) % nr_cpu_ids;
 754                 if (cpu_to_node(new_cpu) == numa_node_id())
 755                         break;
 756         } while (cpu != new_cpu);
 757
 758         queue_work_on(new_cpu, wq, work);
 759 }
 760
 761 /* This is called directly from KGD at ISR. */
 762 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry)
 763 {
 764         uint32_t patched_ihre[KFD_MAX_RING_ENTRY_SIZE];
 765         bool is_patched = false;
 766         unsigned long flags;
 767
 768         if (!kfd->init_complete)
 769                 return;
 770
 771         if (kfd->device_info.ih_ring_entry_size > sizeof(patched_ihre)) {
 772                 dev_err_once(kfd_device, "Ring entry too small\n");
 773                 return;
 774         }
 775
 776         spin_lock_irqsave(&kfd->interrupt_lock, flags);
 777
 778         if (kfd->interrupts_active
 779             && interrupt_is_wanted(kfd, ih_ring_entry,
 780                                    patched_ihre, &is_patched)
 781             && enqueue_ih_ring_entry(kfd,
 782                                      is_patched ? patched_ihre : ih_ring_entry))
 783                 kfd_queue_work(kfd->ih_wq, &kfd->interrupt_work);
 784
 785         spin_unlock_irqrestore(&kfd->interrupt_lock, flags);
 786 }
 787
 788 int kgd2kfd_quiesce_mm(struct mm_struct *mm)
 789 {
 790         struct kfd_process *p;
 791         int r;
 792
 793         /* Because we are called from arbitrary context (workqueue) as opposed
 794          * to process context, kfd_process could attempt to exit while we are
 795          * running so the lookup function increments the process ref count.
 796          */
 797         p = kfd_lookup_process_by_mm(mm);
 798         if (!p)
 799                 return -ESRCH;
 800
 801         WARN(debug_evictions, "Evicting pid %d", p->lead_thread->pid);
 802         r = kfd_process_evict_queues(p);
 803
 804         kfd_unref_process(p);
 805         return r;
 806 }
 807
 808 int kgd2kfd_resume_mm(struct mm_struct *mm)
 809 {
 810         struct kfd_process *p;
 811         int r;
 812
 813         /* Because we are called from arbitrary context (workqueue) as opposed
 814          * to process context, kfd_process could attempt to exit while we are
 815          * running so the lookup function increments the process ref count.
 816          */
 817         p = kfd_lookup_process_by_mm(mm);
 818         if (!p)
 819                 return -ESRCH;
 820
 821         r = kfd_process_restore_queues(p);
 822
 823         kfd_unref_process(p);
 824         return r;
 825 }
 826
 827 /** kgd2kfd_schedule_evict_and_restore_process - Schedules work queue that will
 828  *   prepare for safe eviction of KFD BOs that belong to the specified
 829  *   process.
 830  *
 831  * @mm: mm_struct that identifies the specified KFD process
 832  * @fence: eviction fence attached to KFD process BOs
 833  *
 834  */
 835 int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
 836                                                struct dma_fence *fence)
 837 {
 838         struct kfd_process *p;
 839         unsigned long active_time;
 840         unsigned long delay_jiffies = msecs_to_jiffies(PROCESS_ACTIVE_TIME_MS);
 841
 842         if (!fence)
 843                 return -EINVAL;
 844
 845         if (dma_fence_is_signaled(fence))
 846                 return 0;
 847
 848         p = kfd_lookup_process_by_mm(mm);
 849         if (!p)
 850                 return -ENODEV;
 851
 852         if (fence->seqno == p->last_eviction_seqno)
 853                 goto out;
 854
 855         p->last_eviction_seqno = fence->seqno;
 856
 857         /* Avoid KFD process starvation. Wait for at least
 858          * PROCESS_ACTIVE_TIME_MS before evicting the process again
 859          */
 860         active_time = get_jiffies_64() - p->last_restore_timestamp;
 861         if (delay_jiffies > active_time)
 862                 delay_jiffies -= active_time;
 863         else
 864                 delay_jiffies = 0;
 865
 866         /* During process initialization eviction_work.dwork is initialized
 867          * to kfd_evict_bo_worker
 868          */
 869         WARN(debug_evictions, "Scheduling eviction of pid %d in %ld jiffies",
 870              p->lead_thread->pid, delay_jiffies);
 871         schedule_delayed_work(&p->eviction_work, delay_jiffies);
 872 out:
 873         kfd_unref_process(p);
 874         return 0;
 875 }
 876
 877 static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
 878                                 unsigned int chunk_size)
 879 {
 880         unsigned int num_of_longs;
 881
 882         if (WARN_ON(buf_size < chunk_size))
 883                 return -EINVAL;
 884         if (WARN_ON(buf_size == 0))
 885                 return -EINVAL;
 886         if (WARN_ON(chunk_size == 0))
 887                 return -EINVAL;
 888
 889         kfd->gtt_sa_chunk_size = chunk_size;
 890         kfd->gtt_sa_num_of_chunks = buf_size / chunk_size;
 891
 892         num_of_longs = (kfd->gtt_sa_num_of_chunks + BITS_PER_LONG - 1) /
 893                 BITS_PER_LONG;
 894
 895         kfd->gtt_sa_bitmap = kcalloc(num_of_longs, sizeof(long), GFP_KERNEL);
 896
 897         if (!kfd->gtt_sa_bitmap)
 898                 return -ENOMEM;
 899
 900         pr_debug("gtt_sa_num_of_chunks = %d, gtt_sa_bitmap = %p\n",
 901                         kfd->gtt_sa_num_of_chunks, kfd->gtt_sa_bitmap);
 902
 903         mutex_init(&kfd->gtt_sa_lock);
 904
 905         return 0;
 906
 907 }
 908
 909 static void kfd_gtt_sa_fini(struct kfd_dev *kfd)
 910 {
 911         mutex_destroy(&kfd->gtt_sa_lock);
 912         kfree(kfd->gtt_sa_bitmap);
 913 }
 914
 915 static inline uint64_t kfd_gtt_sa_calc_gpu_addr(uint64_t start_addr,
 916                                                 unsigned int bit_num,
 917                                                 unsigned int chunk_size)
 918 {
 919         return start_addr + bit_num * chunk_size;
 920 }
 921
 922 static inline uint32_t *kfd_gtt_sa_calc_cpu_addr(void *start_addr,
 923                                                 unsigned int bit_num,
 924                                                 unsigned int chunk_size)
 925 {
 926         return (uint32_t *) ((uint64_t) start_addr + bit_num * chunk_size);
 927 }
 928
 929 int kfd_gtt_sa_allocate(struct kfd_dev *kfd, unsigned int size,
 930                         struct kfd_mem_obj **mem_obj)
 931 {
 932         unsigned int found, start_search, cur_size;
 933
 934         if (size == 0)
 935                 return -EINVAL;
 936
 937         if (size > kfd->gtt_sa_num_of_chunks * kfd->gtt_sa_chunk_size)
 938                 return -ENOMEM;
 939
 940         *mem_obj = kzalloc(sizeof(struct kfd_mem_obj), GFP_KERNEL);
 941         if (!(*mem_obj))
 942                 return -ENOMEM;
 943
 944         pr_debug("Allocated mem_obj = %p for size = %d\n", *mem_obj, size);
 945
 946         start_search = 0;
 947
 948         mutex_lock(&kfd->gtt_sa_lock);
 949
 950 kfd_gtt_restart_search:
 951         /* Find the first chunk that is free */
 952         found = find_next_zero_bit(kfd->gtt_sa_bitmap,
 953                                         kfd->gtt_sa_num_of_chunks,
 954                                         start_search);
 955
 956         pr_debug("Found = %d\n", found);
 957
 958         /* If there wasn't any free chunk, bail out */
 959         if (found == kfd->gtt_sa_num_of_chunks)
 960                 goto kfd_gtt_no_free_chunk;
 961
 962         /* Update fields of mem_obj */
 963         (*mem_obj)->range_start = found;
 964         (*mem_obj)->range_end = found;
 965         (*mem_obj)->gpu_addr = kfd_gtt_sa_calc_gpu_addr(
 966                                         kfd->gtt_start_gpu_addr,
 967                                         found,
 968                                         kfd->gtt_sa_chunk_size);
 969         (*mem_obj)->cpu_ptr = kfd_gtt_sa_calc_cpu_addr(
 970                                         kfd->gtt_start_cpu_ptr,
 971                                         found,
 972                                         kfd->gtt_sa_chunk_size);
 973
 974         pr_debug("gpu_addr = %p, cpu_addr = %p\n",
 975                         (uint64_t *) (*mem_obj)->gpu_addr, (*mem_obj)->cpu_ptr);
 976
 977         /* If we need only one chunk, mark it as allocated and get out */
 978         if (size <= kfd->gtt_sa_chunk_size) {
 979                 pr_debug("Single bit\n");
 980                 set_bit(found, kfd->gtt_sa_bitmap);
 981                 goto kfd_gtt_out;
 982         }
 983
 984         /* Otherwise, try to see if we have enough contiguous chunks */
 985         cur_size = size - kfd->gtt_sa_chunk_size;
 986         do {
 987                 (*mem_obj)->range_end =
 988                         find_next_zero_bit(kfd->gtt_sa_bitmap,
 989                                         kfd->gtt_sa_num_of_chunks, ++found);
 990                 /*
 991                  * If next free chunk is not contiguous than we need to
 992                  * restart our search from the last free chunk we found (which
 993                  * wasn't contiguous to the previous ones
 994                  */
 995                 if ((*mem_obj)->range_end != found) {
 996                         start_search = found;
 997                         goto kfd_gtt_restart_search;
 998                 }
 999
1000                 /*
1001                  * If we reached end of buffer, bail out with error
1002                  */
1003                 if (found == kfd->gtt_sa_num_of_chunks)
1004                         goto kfd_gtt_no_free_chunk;
1005
1006                 /* Check if we don't need another chunk */
1007                 if (cur_size <= kfd->gtt_sa_chunk_size)
1008                         cur_size = 0;
1009                 else
1010                         cur_size -= kfd->gtt_sa_chunk_size;
1011
1012         } while (cur_size > 0);
1013
1014         pr_debug("range_start = %d, range_end = %d\n",
1015                 (*mem_obj)->range_start, (*mem_obj)->range_end);
1016
1017         /* Mark the chunks as allocated */
1018         for (found = (*mem_obj)->range_start;
1019                 found <= (*mem_obj)->range_end;
1020                 found++)
1021                 set_bit(found, kfd->gtt_sa_bitmap);
1022
1023 kfd_gtt_out:
1024         mutex_unlock(&kfd->gtt_sa_lock);
1025         return 0;
1026
1027 kfd_gtt_no_free_chunk:
1028         pr_debug("Allocation failed with mem_obj = %p\n", *mem_obj);
1029         mutex_unlock(&kfd->gtt_sa_lock);
1030         kfree(*mem_obj);
1031         return -ENOMEM;
1032 }
1033
1034 int kfd_gtt_sa_free(struct kfd_dev *kfd, struct kfd_mem_obj *mem_obj)
1035 {
1036         unsigned int bit;
1037
1038         /* Act like kfree when trying to free a NULL object */
1039         if (!mem_obj)
1040                 return 0;
1041
1042         pr_debug("Free mem_obj = %p, range_start = %d, range_end = %d\n",
1043                         mem_obj, mem_obj->range_start, mem_obj->range_end);
1044
1045         mutex_lock(&kfd->gtt_sa_lock);
1046
1047         /* Mark the chunks as free */
1048         for (bit = mem_obj->range_start;
1049                 bit <= mem_obj->range_end;
1050                 bit++)
1051                 clear_bit(bit, kfd->gtt_sa_bitmap);
1052
1053         mutex_unlock(&kfd->gtt_sa_lock);
1054
1055         kfree(mem_obj);
1056         return 0;
1057 }
1058
1059 void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd)
1060 {
1061         if (kfd)
1062                 atomic_inc(&kfd->sram_ecc_flag);
1063 }
1064
1065 void kfd_inc_compute_active(struct kfd_dev *kfd)
1066 {
1067         if (atomic_inc_return(&kfd->compute_profile) == 1)
1068                 amdgpu_amdkfd_set_compute_idle(kfd->adev, false);
1069 }
1070
1071 void kfd_dec_compute_active(struct kfd_dev *kfd)
1072 {
1073         int count = atomic_dec_return(&kfd->compute_profile);
1074
1075         if (count == 0)
1076                 amdgpu_amdkfd_set_compute_idle(kfd->adev, true);
1077         WARN_ONCE(count < 0, "Compute profile ref. count error");
1078 }
1079
1080 void kgd2kfd_smi_event_throttle(struct kfd_dev *kfd, uint64_t throttle_bitmask)
1081 {
1082         if (kfd && kfd->init_complete)
1083                 kfd_smi_event_update_thermal_throttling(kfd, throttle_bitmask);
1084 }
1085
1086 /* kfd_get_num_sdma_engines returns the number of PCIe optimized SDMA and
1087  * kfd_get_num_xgmi_sdma_engines returns the number of XGMI SDMA.
1088  * When the device has more than two engines, we reserve two for PCIe to enable
1089  * full-duplex and the rest are used as XGMI.
1090  */
1091 unsigned int kfd_get_num_sdma_engines(struct kfd_dev *kdev)
1092 {
1093         /* If XGMI is not supported, all SDMA engines are PCIe */
1094         if (!kdev->adev->gmc.xgmi.supported)
1095                 return kdev->adev->sdma.num_instances;
1096
1097         return min(kdev->adev->sdma.num_instances, 2);
1098 }
1099
1100 unsigned int kfd_get_num_xgmi_sdma_engines(struct kfd_dev *kdev)
1101 {
1102         /* After reserved for PCIe, the rest of engines are XGMI */
1103         return kdev->adev->sdma.num_instances - kfd_get_num_sdma_engines(kdev);
1104 }
1105
1106 #if defined(CONFIG_DEBUG_FS)
1107
1108 /* This function will send a package to HIQ to hang the HWS
1109  * which will trigger a GPU reset and bring the HWS back to normal state
1110  */
1111 int kfd_debugfs_hang_hws(struct kfd_dev *dev)
1112 {
1113         if (dev->dqm->sched_policy != KFD_SCHED_POLICY_HWS) {
1114                 pr_err("HWS is not enabled");
1115                 return -EINVAL;
1116         }
1117
1118         return dqm_debugfs_hang_hws(dev->dqm);
1119 }
1120
1121 #endif