drivers/gpu/drm/msm/adreno/adreno_device.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2013-2014 Red Hat
   4  * Author: Rob Clark <[email protected]>
   5  *
   6  * Copyright (c) 2014,2017 The Linux Foundation. All rights reserved.
   7  */
   8
   9 #include "adreno_gpu.h"
  10
  11 bool hang_debug = false;
  12 MODULE_PARM_DESC(hang_debug, "Dump registers when hang is detected (can be slow!)");
  13 module_param_named(hang_debug, hang_debug, bool, 0600);
  14
  15 bool snapshot_debugbus = false;
  16 MODULE_PARM_DESC(snapshot_debugbus, "Include debugbus sections in GPU devcoredump (if not fused off)");
  17 module_param_named(snapshot_debugbus, snapshot_debugbus, bool, 0600);
  18
  19 bool allow_vram_carveout = false;
  20 MODULE_PARM_DESC(allow_vram_carveout, "Allow using VRAM Carveout, in place of IOMMU");
  21 module_param_named(allow_vram_carveout, allow_vram_carveout, bool, 0600);
  22
  23 static const struct adreno_info gpulist[] = {
  24         {
  25                 .rev   = ADRENO_REV(2, 0, 0, 0),
  26                 .revn  = 200,
  27                 .name  = "A200",
  28                 .fw = {
  29                         [ADRENO_FW_PM4] = "yamato_pm4.fw",
  30                         [ADRENO_FW_PFP] = "yamato_pfp.fw",
  31                 },
  32                 .gmem  = SZ_256K,
  33                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
  34                 .init  = a2xx_gpu_init,
  35         }, { /* a200 on i.mx51 has only 128kib gmem */
  36                 .rev   = ADRENO_REV(2, 0, 0, 1),
  37                 .revn  = 201,
  38                 .name  = "A200",
  39                 .fw = {
  40                         [ADRENO_FW_PM4] = "yamato_pm4.fw",
  41                         [ADRENO_FW_PFP] = "yamato_pfp.fw",
  42                 },
  43                 .gmem  = SZ_128K,
  44                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
  45                 .init  = a2xx_gpu_init,
  46         }, {
  47                 .rev   = ADRENO_REV(2, 2, 0, ANY_ID),
  48                 .revn  = 220,
  49                 .name  = "A220",
  50                 .fw = {
  51                         [ADRENO_FW_PM4] = "leia_pm4_470.fw",
  52                         [ADRENO_FW_PFP] = "leia_pfp_470.fw",
  53                 },
  54                 .gmem  = SZ_512K,
  55                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
  56                 .init  = a2xx_gpu_init,
  57         }, {
  58                 .rev   = ADRENO_REV(3, 0, 5, ANY_ID),
  59                 .revn  = 305,
  60                 .name  = "A305",
  61                 .fw = {
  62                         [ADRENO_FW_PM4] = "a300_pm4.fw",
  63                         [ADRENO_FW_PFP] = "a300_pfp.fw",
  64                 },
  65                 .gmem  = SZ_256K,
  66                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
  67                 .init  = a3xx_gpu_init,
  68         }, {
  69                 .rev   = ADRENO_REV(3, 0, 6, 0),
  70                 .revn  = 307,        /* because a305c is revn==306 */
  71                 .name  = "A306",
  72                 .fw = {
  73                         [ADRENO_FW_PM4] = "a300_pm4.fw",
  74                         [ADRENO_FW_PFP] = "a300_pfp.fw",
  75                 },
  76                 .gmem  = SZ_128K,
  77                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
  78                 .init  = a3xx_gpu_init,
  79         }, {
  80                 .rev   = ADRENO_REV(3, 2, ANY_ID, ANY_ID),
  81                 .revn  = 320,
  82                 .name  = "A320",
  83                 .fw = {
  84                         [ADRENO_FW_PM4] = "a300_pm4.fw",
  85                         [ADRENO_FW_PFP] = "a300_pfp.fw",
  86                 },
  87                 .gmem  = SZ_512K,
  88                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
  89                 .init  = a3xx_gpu_init,
  90         }, {
  91                 .rev   = ADRENO_REV(3, 3, 0, ANY_ID),
  92                 .revn  = 330,
  93                 .name  = "A330",
  94                 .fw = {
  95                         [ADRENO_FW_PM4] = "a330_pm4.fw",
  96                         [ADRENO_FW_PFP] = "a330_pfp.fw",
  97                 },
  98                 .gmem  = SZ_1M,
  99                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
 100                 .init  = a3xx_gpu_init,
 101         }, {
 102                 .rev   = ADRENO_REV(4, 0, 5, ANY_ID),
 103                 .revn  = 405,
 104                 .name  = "A405",
 105                 .fw = {
 106                         [ADRENO_FW_PM4] = "a420_pm4.fw",
 107                         [ADRENO_FW_PFP] = "a420_pfp.fw",
 108                 },
 109                 .gmem  = SZ_256K,
 110                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
 111                 .init  = a4xx_gpu_init,
 112         }, {
 113                 .rev   = ADRENO_REV(4, 2, 0, ANY_ID),
 114                 .revn  = 420,
 115                 .name  = "A420",
 116                 .fw = {
 117                         [ADRENO_FW_PM4] = "a420_pm4.fw",
 118                         [ADRENO_FW_PFP] = "a420_pfp.fw",
 119                 },
 120                 .gmem  = (SZ_1M + SZ_512K),
 121                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
 122                 .init  = a4xx_gpu_init,
 123         }, {
 124                 .rev   = ADRENO_REV(4, 3, 0, ANY_ID),
 125                 .revn  = 430,
 126                 .name  = "A430",
 127                 .fw = {
 128                         [ADRENO_FW_PM4] = "a420_pm4.fw",
 129                         [ADRENO_FW_PFP] = "a420_pfp.fw",
 130                 },
 131                 .gmem  = (SZ_1M + SZ_512K),
 132                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
 133                 .init  = a4xx_gpu_init,
 134         }, {
 135                 .rev   = ADRENO_REV(5, 0, 6, ANY_ID),
 136                 .revn = 506,
 137                 .name = "A506",
 138                 .fw = {
 139                         [ADRENO_FW_PM4] = "a530_pm4.fw",
 140                         [ADRENO_FW_PFP] = "a530_pfp.fw",
 141                 },
 142                 .gmem = (SZ_128K + SZ_8K),
 143                 /*
 144                  * Increase inactive period to 250 to avoid bouncing
 145                  * the GDSC which appears to make it grumpy
 146                  */
 147                 .inactive_period = 250,
 148                 .quirks = ADRENO_QUIRK_TWO_PASS_USE_WFI |
 149                           ADRENO_QUIRK_LMLOADKILL_DISABLE,
 150                 .init = a5xx_gpu_init,
 151                 .zapfw = "a506_zap.mdt",
 152         }, {
 153                 .rev   = ADRENO_REV(5, 0, 8, ANY_ID),
 154                 .revn = 508,
 155                 .name = "A508",
 156                 .fw = {
 157                         [ADRENO_FW_PM4] = "a530_pm4.fw",
 158                         [ADRENO_FW_PFP] = "a530_pfp.fw",
 159                 },
 160                 .gmem = (SZ_128K + SZ_8K),
 161                 /*
 162                  * Increase inactive period to 250 to avoid bouncing
 163                  * the GDSC which appears to make it grumpy
 164                  */
 165                 .inactive_period = 250,
 166                 .quirks = ADRENO_QUIRK_LMLOADKILL_DISABLE,
 167                 .init = a5xx_gpu_init,
 168                 .zapfw = "a508_zap.mdt",
 169         }, {
 170                 .rev   = ADRENO_REV(5, 0, 9, ANY_ID),
 171                 .revn = 509,
 172                 .name = "A509",
 173                 .fw = {
 174                         [ADRENO_FW_PM4] = "a530_pm4.fw",
 175                         [ADRENO_FW_PFP] = "a530_pfp.fw",
 176                 },
 177                 .gmem = (SZ_256K + SZ_16K),
 178                 /*
 179                  * Increase inactive period to 250 to avoid bouncing
 180                  * the GDSC which appears to make it grumpy
 181                  */
 182                 .inactive_period = 250,
 183                 .quirks = ADRENO_QUIRK_LMLOADKILL_DISABLE,
 184                 .init = a5xx_gpu_init,
 185                 /* Adreno 509 uses the same ZAP as 512 */
 186                 .zapfw = "a512_zap.mdt",
 187         }, {
 188                 .rev   = ADRENO_REV(5, 1, 0, ANY_ID),
 189                 .revn = 510,
 190                 .name = "A510",
 191                 .fw = {
 192                         [ADRENO_FW_PM4] = "a530_pm4.fw",
 193                         [ADRENO_FW_PFP] = "a530_pfp.fw",
 194                 },
 195                 .gmem = SZ_256K,
 196                 /*
 197                  * Increase inactive period to 250 to avoid bouncing
 198                  * the GDSC which appears to make it grumpy
 199                  */
 200                 .inactive_period = 250,
 201                 .init = a5xx_gpu_init,
 202         }, {
 203                 .rev   = ADRENO_REV(5, 1, 2, ANY_ID),
 204                 .revn = 512,
 205                 .name = "A512",
 206                 .fw = {
 207                         [ADRENO_FW_PM4] = "a530_pm4.fw",
 208                         [ADRENO_FW_PFP] = "a530_pfp.fw",
 209                 },
 210                 .gmem = (SZ_256K + SZ_16K),
 211                 /*
 212                  * Increase inactive period to 250 to avoid bouncing
 213                  * the GDSC which appears to make it grumpy
 214                  */
 215                 .inactive_period = 250,
 216                 .quirks = ADRENO_QUIRK_LMLOADKILL_DISABLE,
 217                 .init = a5xx_gpu_init,
 218                 .zapfw = "a512_zap.mdt",
 219         }, {
 220                 .rev = ADRENO_REV(5, 3, 0, 2),
 221                 .revn = 530,
 222                 .name = "A530",
 223                 .fw = {
 224                         [ADRENO_FW_PM4] = "a530_pm4.fw",
 225                         [ADRENO_FW_PFP] = "a530_pfp.fw",
 226                         [ADRENO_FW_GPMU] = "a530v3_gpmu.fw2",
 227                 },
 228                 .gmem = SZ_1M,
 229                 /*
 230                  * Increase inactive period to 250 to avoid bouncing
 231                  * the GDSC which appears to make it grumpy
 232                  */
 233                 .inactive_period = 250,
 234                 .quirks = ADRENO_QUIRK_TWO_PASS_USE_WFI |
 235                         ADRENO_QUIRK_FAULT_DETECT_MASK,
 236                 .init = a5xx_gpu_init,
 237                 .zapfw = "a530_zap.mdt",
 238         }, {
 239                 .rev = ADRENO_REV(5, 4, 0, ANY_ID),
 240                 .revn = 540,
 241                 .name = "A540",
 242                 .fw = {
 243                         [ADRENO_FW_PM4] = "a530_pm4.fw",
 244                         [ADRENO_FW_PFP] = "a530_pfp.fw",
 245                         [ADRENO_FW_GPMU] = "a540_gpmu.fw2",
 246                 },
 247                 .gmem = SZ_1M,
 248                 /*
 249                  * Increase inactive period to 250 to avoid bouncing
 250                  * the GDSC which appears to make it grumpy
 251                  */
 252                 .inactive_period = 250,
 253                 .quirks = ADRENO_QUIRK_LMLOADKILL_DISABLE,
 254                 .init = a5xx_gpu_init,
 255                 .zapfw = "a540_zap.mdt",
 256         }, {
 257                 .rev = ADRENO_REV(6, 1, 8, ANY_ID),
 258                 .revn = 618,
 259                 .name = "A618",
 260                 .fw = {
 261                         [ADRENO_FW_SQE] = "a630_sqe.fw",
 262                         [ADRENO_FW_GMU] = "a630_gmu.bin",
 263                 },
 264                 .gmem = SZ_512K,
 265                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
 266                 .init = a6xx_gpu_init,
 267         }, {
 268                 .rev = ADRENO_REV(6, 1, 9, ANY_ID),
 269                 .revn = 619,
 270                 .name = "A619",
 271                 .fw = {
 272                         [ADRENO_FW_SQE] = "a630_sqe.fw",
 273                         [ADRENO_FW_GMU] = "a619_gmu.bin",
 274                 },
 275                 .gmem = SZ_512K,
 276                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
 277                 .init = a6xx_gpu_init,
 278                 .zapfw = "a615_zap.mdt",
 279                 .hwcg = a615_hwcg,
 280         }, {
 281                 .rev = ADRENO_REV(6, 3, 0, ANY_ID),
 282                 .revn = 630,
 283                 .name = "A630",
 284                 .fw = {
 285                         [ADRENO_FW_SQE] = "a630_sqe.fw",
 286                         [ADRENO_FW_GMU] = "a630_gmu.bin",
 287                 },
 288                 .gmem = SZ_1M,
 289                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
 290                 .init = a6xx_gpu_init,
 291                 .zapfw = "a630_zap.mdt",
 292                 .hwcg = a630_hwcg,
 293         }, {
 294                 .rev = ADRENO_REV(6, 4, 0, ANY_ID),
 295                 .revn = 640,
 296                 .name = "A640",
 297                 .fw = {
 298                         [ADRENO_FW_SQE] = "a630_sqe.fw",
 299                         [ADRENO_FW_GMU] = "a640_gmu.bin",
 300                 },
 301                 .gmem = SZ_1M,
 302                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
 303                 .init = a6xx_gpu_init,
 304                 .zapfw = "a640_zap.mdt",
 305                 .hwcg = a640_hwcg,
 306         }, {
 307                 .rev = ADRENO_REV(6, 5, 0, ANY_ID),
 308                 .revn = 650,
 309                 .name = "A650",
 310                 .fw = {
 311                         [ADRENO_FW_SQE] = "a650_sqe.fw",
 312                         [ADRENO_FW_GMU] = "a650_gmu.bin",
 313                 },
 314                 .gmem = SZ_1M + SZ_128K,
 315                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
 316                 .init = a6xx_gpu_init,
 317                 .zapfw = "a650_zap.mdt",
 318                 .hwcg = a650_hwcg,
 319                 .address_space_size = SZ_16G,
 320         }, {
 321                 .rev = ADRENO_REV(6, 6, 0, ANY_ID),
 322                 .revn = 660,
 323                 .name = "A660",
 324                 .fw = {
 325                         [ADRENO_FW_SQE] = "a660_sqe.fw",
 326                         [ADRENO_FW_GMU] = "a660_gmu.bin",
 327                 },
 328                 .gmem = SZ_1M + SZ_512K,
 329                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
 330                 .init = a6xx_gpu_init,
 331                 .zapfw = "a660_zap.mdt",
 332                 .hwcg = a660_hwcg,
 333                 .address_space_size = SZ_16G,
 334         }, {
 335                 .rev = ADRENO_REV(6, 3, 5, ANY_ID),
 336                 .fw = {
 337                         [ADRENO_FW_SQE] = "a660_sqe.fw",
 338                         [ADRENO_FW_GMU] = "a660_gmu.bin",
 339                 },
 340                 .gmem = SZ_512K,
 341                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
 342                 .init = a6xx_gpu_init,
 343                 .hwcg = a660_hwcg,
 344                 .address_space_size = SZ_16G,
 345         }, {
 346                 .rev = ADRENO_REV(6, 8, 0, ANY_ID),
 347                 .revn = 680,
 348                 .name = "A680",
 349                 .fw = {
 350                         [ADRENO_FW_SQE] = "a630_sqe.fw",
 351                         [ADRENO_FW_GMU] = "a640_gmu.bin",
 352                 },
 353                 .gmem = SZ_2M,
 354                 .inactive_period = DRM_MSM_INACTIVE_PERIOD,
 355                 .init = a6xx_gpu_init,
 356                 .zapfw = "a640_zap.mdt",
 357                 .hwcg = a640_hwcg,
 358         },
 359 };
 360
 361 MODULE_FIRMWARE("qcom/a300_pm4.fw");
 362 MODULE_FIRMWARE("qcom/a300_pfp.fw");
 363 MODULE_FIRMWARE("qcom/a330_pm4.fw");
 364 MODULE_FIRMWARE("qcom/a330_pfp.fw");
 365 MODULE_FIRMWARE("qcom/a420_pm4.fw");
 366 MODULE_FIRMWARE("qcom/a420_pfp.fw");
 367 MODULE_FIRMWARE("qcom/a530_pm4.fw");
 368 MODULE_FIRMWARE("qcom/a530_pfp.fw");
 369 MODULE_FIRMWARE("qcom/a530v3_gpmu.fw2");
 370 MODULE_FIRMWARE("qcom/a530_zap.mdt");
 371 MODULE_FIRMWARE("qcom/a530_zap.b00");
 372 MODULE_FIRMWARE("qcom/a530_zap.b01");
 373 MODULE_FIRMWARE("qcom/a530_zap.b02");
 374 MODULE_FIRMWARE("qcom/a619_gmu.bin");
 375 MODULE_FIRMWARE("qcom/a630_sqe.fw");
 376 MODULE_FIRMWARE("qcom/a630_gmu.bin");
 377 MODULE_FIRMWARE("qcom/a630_zap.mbn");
 378
 379 static inline bool _rev_match(uint8_t entry, uint8_t id)
 380 {
 381         return (entry == ANY_ID) || (entry == id);
 382 }
 383
 384 bool adreno_cmp_rev(struct adreno_rev rev1, struct adreno_rev rev2)
 385 {
 386
 387         return _rev_match(rev1.core, rev2.core) &&
 388                 _rev_match(rev1.major, rev2.major) &&
 389                 _rev_match(rev1.minor, rev2.minor) &&
 390                 _rev_match(rev1.patchid, rev2.patchid);
 391 }
 392
 393 const struct adreno_info *adreno_info(struct adreno_rev rev)
 394 {
 395         int i;
 396
 397         /* identify gpu: */
 398         for (i = 0; i < ARRAY_SIZE(gpulist); i++) {
 399                 const struct adreno_info *info = &gpulist[i];
 400                 if (adreno_cmp_rev(info->rev, rev))
 401                         return info;
 402         }
 403
 404         return NULL;
 405 }
 406
 407 struct msm_gpu *adreno_load_gpu(struct drm_device *dev)
 408 {
 409         struct msm_drm_private *priv = dev->dev_private;
 410         struct platform_device *pdev = priv->gpu_pdev;
 411         struct msm_gpu *gpu = NULL;
 412         struct adreno_gpu *adreno_gpu;
 413         int ret;
 414
 415         if (pdev)
 416                 gpu = dev_to_gpu(&pdev->dev);
 417
 418         if (!gpu) {
 419                 dev_err_once(dev->dev, "no GPU device was found\n");
 420                 return NULL;
 421         }
 422
 423         adreno_gpu = to_adreno_gpu(gpu);
 424
 425         /*
 426          * The number one reason for HW init to fail is if the firmware isn't
 427          * loaded yet. Try that first and don't bother continuing on
 428          * otherwise
 429          */
 430
 431         ret = adreno_load_fw(adreno_gpu);
 432         if (ret)
 433                 return NULL;
 434
 435         if (gpu->funcs->ucode_load) {
 436                 ret = gpu->funcs->ucode_load(gpu);
 437                 if (ret)
 438                         return NULL;
 439         }
 440
 441         /*
 442          * Now that we have firmware loaded, and are ready to begin
 443          * booting the gpu, go ahead and enable runpm:
 444          */
 445         pm_runtime_enable(&pdev->dev);
 446
 447         ret = pm_runtime_get_sync(&pdev->dev);
 448         if (ret < 0) {
 449                 pm_runtime_put_noidle(&pdev->dev);
 450                 DRM_DEV_ERROR(dev->dev, "Couldn't power up the GPU: %d\n", ret);
 451                 goto err_disable_rpm;
 452         }
 453
 454         mutex_lock(&gpu->lock);
 455         ret = msm_gpu_hw_init(gpu);
 456         mutex_unlock(&gpu->lock);
 457         if (ret) {
 458                 DRM_DEV_ERROR(dev->dev, "gpu hw init failed: %d\n", ret);
 459                 goto err_put_rpm;
 460         }
 461
 462         pm_runtime_put_autosuspend(&pdev->dev);
 463
 464 #ifdef CONFIG_DEBUG_FS
 465         if (gpu->funcs->debugfs_init) {
 466                 gpu->funcs->debugfs_init(gpu, dev->primary);
 467                 gpu->funcs->debugfs_init(gpu, dev->render);
 468         }
 469 #endif
 470
 471         return gpu;
 472
 473 err_put_rpm:
 474         pm_runtime_put_sync_suspend(&pdev->dev);
 475 err_disable_rpm:
 476         pm_runtime_disable(&pdev->dev);
 477
 478         return NULL;
 479 }
 480
 481 static int find_chipid(struct device *dev, struct adreno_rev *rev)
 482 {
 483         struct device_node *node = dev->of_node;
 484         const char *compat;
 485         int ret;
 486         u32 chipid;
 487
 488         /* first search the compat strings for qcom,adreno-XYZ.W: */
 489         ret = of_property_read_string_index(node, "compatible", 0, &compat);
 490         if (ret == 0) {
 491                 unsigned int r, patch;
 492
 493                 if (sscanf(compat, "qcom,adreno-%u.%u", &r, &patch) == 2 ||
 494                     sscanf(compat, "amd,imageon-%u.%u", &r, &patch) == 2) {
 495                         rev->core = r / 100;
 496                         r %= 100;
 497                         rev->major = r / 10;
 498                         r %= 10;
 499                         rev->minor = r;
 500                         rev->patchid = patch;
 501
 502                         return 0;
 503                 }
 504         }
 505
 506         /* and if that fails, fall back to legacy "qcom,chipid" property: */
 507         ret = of_property_read_u32(node, "qcom,chipid", &chipid);
 508         if (ret) {
 509                 DRM_DEV_ERROR(dev, "could not parse qcom,chipid: %d\n", ret);
 510                 return ret;
 511         }
 512
 513         rev->core = (chipid >> 24) & 0xff;
 514         rev->major = (chipid >> 16) & 0xff;
 515         rev->minor = (chipid >> 8) & 0xff;
 516         rev->patchid = (chipid & 0xff);
 517
 518         dev_warn(dev, "Using legacy qcom,chipid binding!\n");
 519         dev_warn(dev, "Use compatible qcom,adreno-%u%u%u.%u instead.\n",
 520                 rev->core, rev->major, rev->minor, rev->patchid);
 521
 522         return 0;
 523 }
 524
 525 static int adreno_bind(struct device *dev, struct device *master, void *data)
 526 {
 527         static struct adreno_platform_config config = {};
 528         const struct adreno_info *info;
 529         struct msm_drm_private *priv = dev_get_drvdata(master);
 530         struct drm_device *drm = priv->dev;
 531         struct msm_gpu *gpu;
 532         int ret;
 533
 534         ret = find_chipid(dev, &config.rev);
 535         if (ret)
 536                 return ret;
 537
 538         dev->platform_data = &config;
 539         priv->gpu_pdev = to_platform_device(dev);
 540
 541         info = adreno_info(config.rev);
 542
 543         if (!info) {
 544                 dev_warn(drm->dev, "Unknown GPU revision: %u.%u.%u.%u\n",
 545                         config.rev.core, config.rev.major,
 546                         config.rev.minor, config.rev.patchid);
 547                 return -ENXIO;
 548         }
 549
 550         DBG("Found GPU: %u.%u.%u.%u", config.rev.core, config.rev.major,
 551                 config.rev.minor, config.rev.patchid);
 552
 553         priv->is_a2xx = config.rev.core == 2;
 554         priv->has_cached_coherent = config.rev.core >= 6;
 555
 556         gpu = info->init(drm);
 557         if (IS_ERR(gpu)) {
 558                 dev_warn(drm->dev, "failed to load adreno gpu\n");
 559                 return PTR_ERR(gpu);
 560         }
 561
 562         ret = dev_pm_opp_of_find_icc_paths(dev, NULL);
 563         if (ret)
 564                 return ret;
 565
 566         return 0;
 567 }
 568
 569 static int adreno_system_suspend(struct device *dev);
 570 static void adreno_unbind(struct device *dev, struct device *master,
 571                 void *data)
 572 {
 573         struct msm_drm_private *priv = dev_get_drvdata(master);
 574         struct msm_gpu *gpu = dev_to_gpu(dev);
 575
 576         if (pm_runtime_enabled(dev))
 577                 WARN_ON_ONCE(adreno_system_suspend(dev));
 578         gpu->funcs->destroy(gpu);
 579
 580         priv->gpu_pdev = NULL;
 581 }
 582
 583 static const struct component_ops a3xx_ops = {
 584         .bind   = adreno_bind,
 585         .unbind = adreno_unbind,
 586 };
 587
 588 static void adreno_device_register_headless(void)
 589 {
 590         /* on imx5, we don't have a top-level mdp/dpu node
 591          * this creates a dummy node for the driver for that case
 592          */
 593         struct platform_device_info dummy_info = {
 594                 .parent = NULL,
 595                 .name = "msm",
 596                 .id = -1,
 597                 .res = NULL,
 598                 .num_res = 0,
 599                 .data = NULL,
 600                 .size_data = 0,
 601                 .dma_mask = ~0,
 602         };
 603         platform_device_register_full(&dummy_info);
 604 }
 605
 606 static int adreno_probe(struct platform_device *pdev)
 607 {
 608
 609         int ret;
 610
 611         ret = component_add(&pdev->dev, &a3xx_ops);
 612         if (ret)
 613                 return ret;
 614
 615         if (of_device_is_compatible(pdev->dev.of_node, "amd,imageon"))
 616                 adreno_device_register_headless();
 617
 618         return 0;
 619 }
 620
 621 static int adreno_remove(struct platform_device *pdev)
 622 {
 623         component_del(&pdev->dev, &a3xx_ops);
 624         return 0;
 625 }
 626
 627 static void adreno_shutdown(struct platform_device *pdev)
 628 {
 629         WARN_ON_ONCE(adreno_system_suspend(&pdev->dev));
 630 }
 631
 632 static const struct of_device_id dt_match[] = {
 633         { .compatible = "qcom,adreno" },
 634         { .compatible = "qcom,adreno-3xx" },
 635         /* for compatibility with imx5 gpu: */
 636         { .compatible = "amd,imageon" },
 637         /* for backwards compat w/ downstream kgsl DT files: */
 638         { .compatible = "qcom,kgsl-3d0" },
 639         {}
 640 };
 641
 642 static int adreno_runtime_resume(struct device *dev)
 643 {
 644         struct msm_gpu *gpu = dev_to_gpu(dev);
 645
 646         return gpu->funcs->pm_resume(gpu);
 647 }
 648
 649 static int adreno_runtime_suspend(struct device *dev)
 650 {
 651         struct msm_gpu *gpu = dev_to_gpu(dev);
 652
 653         /*
 654          * We should be holding a runpm ref, which will prevent
 655          * runtime suspend.  In the system suspend path, we've
 656          * already waited for active jobs to complete.
 657          */
 658         WARN_ON_ONCE(gpu->active_submits);
 659
 660         return gpu->funcs->pm_suspend(gpu);
 661 }
 662
 663 static void suspend_scheduler(struct msm_gpu *gpu)
 664 {
 665         int i;
 666
 667         /*
 668          * Shut down the scheduler before we force suspend, so that
 669          * suspend isn't racing with scheduler kthread feeding us
 670          * more work.
 671          *
 672          * Note, we just want to park the thread, and let any jobs
 673          * that are already on the hw queue complete normally, as
 674          * opposed to the drm_sched_stop() path used for handling
 675          * faulting/timed-out jobs.  We can't really cancel any jobs
 676          * already on the hw queue without racing with the GPU.
 677          */
 678         for (i = 0; i < gpu->nr_rings; i++) {
 679                 struct drm_gpu_scheduler *sched = &gpu->rb[i]->sched;
 680                 kthread_park(sched->thread);
 681         }
 682 }
 683
 684 static void resume_scheduler(struct msm_gpu *gpu)
 685 {
 686         int i;
 687
 688         for (i = 0; i < gpu->nr_rings; i++) {
 689                 struct drm_gpu_scheduler *sched = &gpu->rb[i]->sched;
 690                 kthread_unpark(sched->thread);
 691         }
 692 }
 693
 694 static int adreno_system_suspend(struct device *dev)
 695 {
 696         struct msm_gpu *gpu = dev_to_gpu(dev);
 697         int remaining, ret;
 698
 699         if (!gpu)
 700                 return 0;
 701
 702         suspend_scheduler(gpu);
 703
 704         remaining = wait_event_timeout(gpu->retire_event,
 705                                        gpu->active_submits == 0,
 706                                        msecs_to_jiffies(1000));
 707         if (remaining == 0) {
 708                 dev_err(dev, "Timeout waiting for GPU to suspend\n");
 709                 ret = -EBUSY;
 710                 goto out;
 711         }
 712
 713         ret = pm_runtime_force_suspend(dev);
 714 out:
 715         if (ret)
 716                 resume_scheduler(gpu);
 717
 718         return ret;
 719 }
 720
 721 static int adreno_system_resume(struct device *dev)
 722 {
 723         struct msm_gpu *gpu = dev_to_gpu(dev);
 724
 725         if (!gpu)
 726                 return 0;
 727
 728         resume_scheduler(gpu);
 729         return pm_runtime_force_resume(dev);
 730 }
 731
 732 static const struct dev_pm_ops adreno_pm_ops = {
 733         SYSTEM_SLEEP_PM_OPS(adreno_system_suspend, adreno_system_resume)
 734         RUNTIME_PM_OPS(adreno_runtime_suspend, adreno_runtime_resume, NULL)
 735 };
 736
 737 static struct platform_driver adreno_driver = {
 738         .probe = adreno_probe,
 739         .remove = adreno_remove,
 740         .shutdown = adreno_shutdown,
 741         .driver = {
 742                 .name = "adreno",
 743                 .of_match_table = dt_match,
 744                 .pm = &adreno_pm_ops,
 745         },
 746 };
 747
 748 void __init adreno_register(void)
 749 {
 750         platform_driver_register(&adreno_driver);
 751 }
 752
 753 void __exit adreno_unregister(void)
 754 {
 755         platform_driver_unregister(&adreno_driver);
 756 }