1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2013-2014 Red Hat 4 * Author: Rob Clark <robdclark@gmail.com> 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, 3, 0, ANY_ID), 269 .revn = 630, 270 .name = "A630", 271 .fw = { 272 [ADRENO_FW_SQE] = "a630_sqe.fw", 273 [ADRENO_FW_GMU] = "a630_gmu.bin", 274 }, 275 .gmem = SZ_1M, 276 .inactive_period = DRM_MSM_INACTIVE_PERIOD, 277 .init = a6xx_gpu_init, 278 .zapfw = "a630_zap.mdt", 279 .hwcg = a630_hwcg, 280 }, { 281 .rev = ADRENO_REV(6, 4, 0, ANY_ID), 282 .revn = 640, 283 .name = "A640", 284 .fw = { 285 [ADRENO_FW_SQE] = "a630_sqe.fw", 286 [ADRENO_FW_GMU] = "a640_gmu.bin", 287 }, 288 .gmem = SZ_1M, 289 .inactive_period = DRM_MSM_INACTIVE_PERIOD, 290 .init = a6xx_gpu_init, 291 .zapfw = "a640_zap.mdt", 292 .hwcg = a640_hwcg, 293 }, { 294 .rev = ADRENO_REV(6, 5, 0, ANY_ID), 295 .revn = 650, 296 .name = "A650", 297 .fw = { 298 [ADRENO_FW_SQE] = "a650_sqe.fw", 299 [ADRENO_FW_GMU] = "a650_gmu.bin", 300 }, 301 .gmem = SZ_1M + SZ_128K, 302 .inactive_period = DRM_MSM_INACTIVE_PERIOD, 303 .init = a6xx_gpu_init, 304 .zapfw = "a650_zap.mdt", 305 .hwcg = a650_hwcg, 306 }, { 307 .rev = ADRENO_REV(6, 6, 0, ANY_ID), 308 .revn = 660, 309 .name = "A660", 310 .fw = { 311 [ADRENO_FW_SQE] = "a660_sqe.fw", 312 [ADRENO_FW_GMU] = "a660_gmu.bin", 313 }, 314 .gmem = SZ_1M + SZ_512K, 315 .inactive_period = DRM_MSM_INACTIVE_PERIOD, 316 .init = a6xx_gpu_init, 317 .zapfw = "a660_zap.mdt", 318 .hwcg = a660_hwcg, 319 }, { 320 .rev = ADRENO_REV(6, 3, 5, ANY_ID), 321 .fw = { 322 [ADRENO_FW_SQE] = "a660_sqe.fw", 323 [ADRENO_FW_GMU] = "a660_gmu.bin", 324 }, 325 .gmem = SZ_512K, 326 .inactive_period = DRM_MSM_INACTIVE_PERIOD, 327 .init = a6xx_gpu_init, 328 .hwcg = a660_hwcg, 329 }, { 330 .rev = ADRENO_REV(6, 8, 0, ANY_ID), 331 .revn = 680, 332 .name = "A680", 333 .fw = { 334 [ADRENO_FW_SQE] = "a630_sqe.fw", 335 [ADRENO_FW_GMU] = "a640_gmu.bin", 336 }, 337 .gmem = SZ_2M, 338 .inactive_period = DRM_MSM_INACTIVE_PERIOD, 339 .init = a6xx_gpu_init, 340 .zapfw = "a640_zap.mdt", 341 .hwcg = a640_hwcg, 342 }, 343 }; 344 345 MODULE_FIRMWARE("qcom/a300_pm4.fw"); 346 MODULE_FIRMWARE("qcom/a300_pfp.fw"); 347 MODULE_FIRMWARE("qcom/a330_pm4.fw"); 348 MODULE_FIRMWARE("qcom/a330_pfp.fw"); 349 MODULE_FIRMWARE("qcom/a420_pm4.fw"); 350 MODULE_FIRMWARE("qcom/a420_pfp.fw"); 351 MODULE_FIRMWARE("qcom/a530_pm4.fw"); 352 MODULE_FIRMWARE("qcom/a530_pfp.fw"); 353 MODULE_FIRMWARE("qcom/a530v3_gpmu.fw2"); 354 MODULE_FIRMWARE("qcom/a530_zap.mdt"); 355 MODULE_FIRMWARE("qcom/a530_zap.b00"); 356 MODULE_FIRMWARE("qcom/a530_zap.b01"); 357 MODULE_FIRMWARE("qcom/a530_zap.b02"); 358 MODULE_FIRMWARE("qcom/a630_sqe.fw"); 359 MODULE_FIRMWARE("qcom/a630_gmu.bin"); 360 MODULE_FIRMWARE("qcom/a630_zap.mbn"); 361 362 static inline bool _rev_match(uint8_t entry, uint8_t id) 363 { 364 return (entry == ANY_ID) || (entry == id); 365 } 366 367 bool adreno_cmp_rev(struct adreno_rev rev1, struct adreno_rev rev2) 368 { 369 370 return _rev_match(rev1.core, rev2.core) && 371 _rev_match(rev1.major, rev2.major) && 372 _rev_match(rev1.minor, rev2.minor) && 373 _rev_match(rev1.patchid, rev2.patchid); 374 } 375 376 const struct adreno_info *adreno_info(struct adreno_rev rev) 377 { 378 int i; 379 380 /* identify gpu: */ 381 for (i = 0; i < ARRAY_SIZE(gpulist); i++) { 382 const struct adreno_info *info = &gpulist[i]; 383 if (adreno_cmp_rev(info->rev, rev)) 384 return info; 385 } 386 387 return NULL; 388 } 389 390 struct msm_gpu *adreno_load_gpu(struct drm_device *dev) 391 { 392 struct msm_drm_private *priv = dev->dev_private; 393 struct platform_device *pdev = priv->gpu_pdev; 394 struct msm_gpu *gpu = NULL; 395 struct adreno_gpu *adreno_gpu; 396 int ret; 397 398 if (pdev) 399 gpu = dev_to_gpu(&pdev->dev); 400 401 if (!gpu) { 402 dev_err_once(dev->dev, "no GPU device was found\n"); 403 return NULL; 404 } 405 406 adreno_gpu = to_adreno_gpu(gpu); 407 408 /* 409 * The number one reason for HW init to fail is if the firmware isn't 410 * loaded yet. Try that first and don't bother continuing on 411 * otherwise 412 */ 413 414 ret = adreno_load_fw(adreno_gpu); 415 if (ret) 416 return NULL; 417 418 /* Make sure pm runtime is active and reset any previous errors */ 419 pm_runtime_set_active(&pdev->dev); 420 421 ret = pm_runtime_get_sync(&pdev->dev); 422 if (ret < 0) { 423 pm_runtime_put_sync(&pdev->dev); 424 DRM_DEV_ERROR(dev->dev, "Couldn't power up the GPU: %d\n", ret); 425 return NULL; 426 } 427 428 mutex_lock(&gpu->lock); 429 ret = msm_gpu_hw_init(gpu); 430 mutex_unlock(&gpu->lock); 431 pm_runtime_put_autosuspend(&pdev->dev); 432 if (ret) { 433 DRM_DEV_ERROR(dev->dev, "gpu hw init failed: %d\n", ret); 434 return NULL; 435 } 436 437 #ifdef CONFIG_DEBUG_FS 438 if (gpu->funcs->debugfs_init) { 439 gpu->funcs->debugfs_init(gpu, dev->primary); 440 gpu->funcs->debugfs_init(gpu, dev->render); 441 } 442 #endif 443 444 return gpu; 445 } 446 447 static int find_chipid(struct device *dev, struct adreno_rev *rev) 448 { 449 struct device_node *node = dev->of_node; 450 const char *compat; 451 int ret; 452 u32 chipid; 453 454 /* first search the compat strings for qcom,adreno-XYZ.W: */ 455 ret = of_property_read_string_index(node, "compatible", 0, &compat); 456 if (ret == 0) { 457 unsigned int r, patch; 458 459 if (sscanf(compat, "qcom,adreno-%u.%u", &r, &patch) == 2 || 460 sscanf(compat, "amd,imageon-%u.%u", &r, &patch) == 2) { 461 rev->core = r / 100; 462 r %= 100; 463 rev->major = r / 10; 464 r %= 10; 465 rev->minor = r; 466 rev->patchid = patch; 467 468 return 0; 469 } 470 } 471 472 /* and if that fails, fall back to legacy "qcom,chipid" property: */ 473 ret = of_property_read_u32(node, "qcom,chipid", &chipid); 474 if (ret) { 475 DRM_DEV_ERROR(dev, "could not parse qcom,chipid: %d\n", ret); 476 return ret; 477 } 478 479 rev->core = (chipid >> 24) & 0xff; 480 rev->major = (chipid >> 16) & 0xff; 481 rev->minor = (chipid >> 8) & 0xff; 482 rev->patchid = (chipid & 0xff); 483 484 dev_warn(dev, "Using legacy qcom,chipid binding!\n"); 485 dev_warn(dev, "Use compatible qcom,adreno-%u%u%u.%u instead.\n", 486 rev->core, rev->major, rev->minor, rev->patchid); 487 488 return 0; 489 } 490 491 static int adreno_bind(struct device *dev, struct device *master, void *data) 492 { 493 static struct adreno_platform_config config = {}; 494 const struct adreno_info *info; 495 struct msm_drm_private *priv = dev_get_drvdata(master); 496 struct drm_device *drm = priv->dev; 497 struct msm_gpu *gpu; 498 int ret; 499 500 ret = find_chipid(dev, &config.rev); 501 if (ret) 502 return ret; 503 504 dev->platform_data = &config; 505 priv->gpu_pdev = to_platform_device(dev); 506 507 info = adreno_info(config.rev); 508 509 if (!info) { 510 dev_warn(drm->dev, "Unknown GPU revision: %u.%u.%u.%u\n", 511 config.rev.core, config.rev.major, 512 config.rev.minor, config.rev.patchid); 513 return -ENXIO; 514 } 515 516 DBG("Found GPU: %u.%u.%u.%u", config.rev.core, config.rev.major, 517 config.rev.minor, config.rev.patchid); 518 519 priv->is_a2xx = config.rev.core == 2; 520 priv->has_cached_coherent = config.rev.core >= 6; 521 522 gpu = info->init(drm); 523 if (IS_ERR(gpu)) { 524 dev_warn(drm->dev, "failed to load adreno gpu\n"); 525 return PTR_ERR(gpu); 526 } 527 528 return 0; 529 } 530 531 static void adreno_unbind(struct device *dev, struct device *master, 532 void *data) 533 { 534 struct msm_drm_private *priv = dev_get_drvdata(master); 535 struct msm_gpu *gpu = dev_to_gpu(dev); 536 537 pm_runtime_force_suspend(dev); 538 gpu->funcs->destroy(gpu); 539 540 priv->gpu_pdev = NULL; 541 } 542 543 static const struct component_ops a3xx_ops = { 544 .bind = adreno_bind, 545 .unbind = adreno_unbind, 546 }; 547 548 static void adreno_device_register_headless(void) 549 { 550 /* on imx5, we don't have a top-level mdp/dpu node 551 * this creates a dummy node for the driver for that case 552 */ 553 struct platform_device_info dummy_info = { 554 .parent = NULL, 555 .name = "msm", 556 .id = -1, 557 .res = NULL, 558 .num_res = 0, 559 .data = NULL, 560 .size_data = 0, 561 .dma_mask = ~0, 562 }; 563 platform_device_register_full(&dummy_info); 564 } 565 566 static int adreno_probe(struct platform_device *pdev) 567 { 568 569 int ret; 570 571 ret = component_add(&pdev->dev, &a3xx_ops); 572 if (ret) 573 return ret; 574 575 if (of_device_is_compatible(pdev->dev.of_node, "amd,imageon")) 576 adreno_device_register_headless(); 577 578 return 0; 579 } 580 581 static int adreno_remove(struct platform_device *pdev) 582 { 583 component_del(&pdev->dev, &a3xx_ops); 584 return 0; 585 } 586 587 static void adreno_shutdown(struct platform_device *pdev) 588 { 589 pm_runtime_force_suspend(&pdev->dev); 590 } 591 592 static const struct of_device_id dt_match[] = { 593 { .compatible = "qcom,adreno" }, 594 { .compatible = "qcom,adreno-3xx" }, 595 /* for compatibility with imx5 gpu: */ 596 { .compatible = "amd,imageon" }, 597 /* for backwards compat w/ downstream kgsl DT files: */ 598 { .compatible = "qcom,kgsl-3d0" }, 599 {} 600 }; 601 602 static int adreno_runtime_resume(struct device *dev) 603 { 604 struct msm_gpu *gpu = dev_to_gpu(dev); 605 606 return gpu->funcs->pm_resume(gpu); 607 } 608 609 static int adreno_runtime_suspend(struct device *dev) 610 { 611 struct msm_gpu *gpu = dev_to_gpu(dev); 612 613 /* 614 * We should be holding a runpm ref, which will prevent 615 * runtime suspend. In the system suspend path, we've 616 * already waited for active jobs to complete. 617 */ 618 WARN_ON_ONCE(gpu->active_submits); 619 620 return gpu->funcs->pm_suspend(gpu); 621 } 622 623 static void suspend_scheduler(struct msm_gpu *gpu) 624 { 625 int i; 626 627 /* 628 * Shut down the scheduler before we force suspend, so that 629 * suspend isn't racing with scheduler kthread feeding us 630 * more work. 631 * 632 * Note, we just want to park the thread, and let any jobs 633 * that are already on the hw queue complete normally, as 634 * opposed to the drm_sched_stop() path used for handling 635 * faulting/timed-out jobs. We can't really cancel any jobs 636 * already on the hw queue without racing with the GPU. 637 */ 638 for (i = 0; i < gpu->nr_rings; i++) { 639 struct drm_gpu_scheduler *sched = &gpu->rb[i]->sched; 640 kthread_park(sched->thread); 641 } 642 } 643 644 static void resume_scheduler(struct msm_gpu *gpu) 645 { 646 int i; 647 648 for (i = 0; i < gpu->nr_rings; i++) { 649 struct drm_gpu_scheduler *sched = &gpu->rb[i]->sched; 650 kthread_unpark(sched->thread); 651 } 652 } 653 654 static int adreno_system_suspend(struct device *dev) 655 { 656 struct msm_gpu *gpu = dev_to_gpu(dev); 657 int remaining, ret; 658 659 suspend_scheduler(gpu); 660 661 remaining = wait_event_timeout(gpu->retire_event, 662 gpu->active_submits == 0, 663 msecs_to_jiffies(1000)); 664 if (remaining == 0) { 665 dev_err(dev, "Timeout waiting for GPU to suspend\n"); 666 ret = -EBUSY; 667 goto out; 668 } 669 670 ret = pm_runtime_force_suspend(dev); 671 out: 672 if (ret) 673 resume_scheduler(gpu); 674 675 return ret; 676 } 677 678 static int adreno_system_resume(struct device *dev) 679 { 680 resume_scheduler(dev_to_gpu(dev)); 681 return pm_runtime_force_resume(dev); 682 } 683 684 static const struct dev_pm_ops adreno_pm_ops = { 685 SYSTEM_SLEEP_PM_OPS(adreno_system_suspend, adreno_system_resume) 686 RUNTIME_PM_OPS(adreno_runtime_suspend, adreno_runtime_resume, NULL) 687 }; 688 689 static struct platform_driver adreno_driver = { 690 .probe = adreno_probe, 691 .remove = adreno_remove, 692 .shutdown = adreno_shutdown, 693 .driver = { 694 .name = "adreno", 695 .of_match_table = dt_match, 696 .pm = &adreno_pm_ops, 697 }, 698 }; 699 700 void __init adreno_register(void) 701 { 702 platform_driver_register(&adreno_driver); 703 } 704 705 void __exit adreno_unregister(void) 706 { 707 platform_driver_unregister(&adreno_driver); 708 } 709