1 /* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*- 2 */ 3 /* 4 * 5 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. 6 * All Rights Reserved. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a 9 * copy of this software and associated documentation files (the 10 * "Software"), to deal in the Software without restriction, including 11 * without limitation the rights to use, copy, modify, merge, publish, 12 * distribute, sub license, and/or sell copies of the Software, and to 13 * permit persons to whom the Software is furnished to do so, subject to 14 * the following conditions: 15 * 16 * The above copyright notice and this permission notice (including the 17 * next paragraph) shall be included in all copies or substantial portions 18 * of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 23 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 24 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 25 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 26 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 27 * 28 */ 29 30 #include <linux/acpi.h> 31 #include <linux/device.h> 32 #include <linux/module.h> 33 #include <linux/oom.h> 34 #include <linux/pci.h> 35 #include <linux/pm.h> 36 #include <linux/pm_runtime.h> 37 #include <linux/pnp.h> 38 #include <linux/slab.h> 39 #include <linux/vga_switcheroo.h> 40 #include <linux/vt.h> 41 42 #include <drm/drm_aperture.h> 43 #include <drm/drm_atomic_helper.h> 44 #include <drm/drm_ioctl.h> 45 #include <drm/drm_managed.h> 46 #include <drm/drm_probe_helper.h> 47 48 #include "display/intel_acpi.h" 49 #include "display/intel_bw.h" 50 #include "display/intel_cdclk.h" 51 #include "display/intel_display_types.h" 52 #include "display/intel_dmc.h" 53 #include "display/intel_dp.h" 54 #include "display/intel_dpt.h" 55 #include "display/intel_fbdev.h" 56 #include "display/intel_hotplug.h" 57 #include "display/intel_overlay.h" 58 #include "display/intel_pch_refclk.h" 59 #include "display/intel_pipe_crc.h" 60 #include "display/intel_pps.h" 61 #include "display/intel_sprite.h" 62 #include "display/intel_vga.h" 63 64 #include "gem/i915_gem_context.h" 65 #include "gem/i915_gem_create.h" 66 #include "gem/i915_gem_dmabuf.h" 67 #include "gem/i915_gem_ioctls.h" 68 #include "gem/i915_gem_mman.h" 69 #include "gem/i915_gem_pm.h" 70 #include "gt/intel_gt.h" 71 #include "gt/intel_gt_pm.h" 72 #include "gt/intel_rc6.h" 73 74 #include "pxp/intel_pxp_pm.h" 75 76 #include "i915_file_private.h" 77 #include "i915_debugfs.h" 78 #include "i915_driver.h" 79 #include "i915_drv.h" 80 #include "i915_getparam.h" 81 #include "i915_ioc32.h" 82 #include "i915_ioctl.h" 83 #include "i915_irq.h" 84 #include "i915_memcpy.h" 85 #include "i915_perf.h" 86 #include "i915_query.h" 87 #include "i915_suspend.h" 88 #include "i915_switcheroo.h" 89 #include "i915_sysfs.h" 90 #include "i915_vgpu.h" 91 #include "intel_dram.h" 92 #include "intel_gvt.h" 93 #include "intel_memory_region.h" 94 #include "intel_pci_config.h" 95 #include "intel_pcode.h" 96 #include "intel_pm.h" 97 #include "intel_region_ttm.h" 98 #include "vlv_suspend.h" 99 100 static const struct drm_driver i915_drm_driver; 101 102 static int i915_get_bridge_dev(struct drm_i915_private *dev_priv) 103 { 104 int domain = pci_domain_nr(to_pci_dev(dev_priv->drm.dev)->bus); 105 106 dev_priv->bridge_dev = 107 pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(0, 0)); 108 if (!dev_priv->bridge_dev) { 109 drm_err(&dev_priv->drm, "bridge device not found\n"); 110 return -EIO; 111 } 112 return 0; 113 } 114 115 /* Allocate space for the MCH regs if needed, return nonzero on error */ 116 static int 117 intel_alloc_mchbar_resource(struct drm_i915_private *dev_priv) 118 { 119 int reg = GRAPHICS_VER(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915; 120 u32 temp_lo, temp_hi = 0; 121 u64 mchbar_addr; 122 int ret; 123 124 if (GRAPHICS_VER(dev_priv) >= 4) 125 pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi); 126 pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo); 127 mchbar_addr = ((u64)temp_hi << 32) | temp_lo; 128 129 /* If ACPI doesn't have it, assume we need to allocate it ourselves */ 130 #ifdef CONFIG_PNP 131 if (mchbar_addr && 132 pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE)) 133 return 0; 134 #endif 135 136 /* Get some space for it */ 137 dev_priv->mch_res.name = "i915 MCHBAR"; 138 dev_priv->mch_res.flags = IORESOURCE_MEM; 139 ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus, 140 &dev_priv->mch_res, 141 MCHBAR_SIZE, MCHBAR_SIZE, 142 PCIBIOS_MIN_MEM, 143 0, pcibios_align_resource, 144 dev_priv->bridge_dev); 145 if (ret) { 146 drm_dbg(&dev_priv->drm, "failed bus alloc: %d\n", ret); 147 dev_priv->mch_res.start = 0; 148 return ret; 149 } 150 151 if (GRAPHICS_VER(dev_priv) >= 4) 152 pci_write_config_dword(dev_priv->bridge_dev, reg + 4, 153 upper_32_bits(dev_priv->mch_res.start)); 154 155 pci_write_config_dword(dev_priv->bridge_dev, reg, 156 lower_32_bits(dev_priv->mch_res.start)); 157 return 0; 158 } 159 160 /* Setup MCHBAR if possible, return true if we should disable it again */ 161 static void 162 intel_setup_mchbar(struct drm_i915_private *dev_priv) 163 { 164 int mchbar_reg = GRAPHICS_VER(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915; 165 u32 temp; 166 bool enabled; 167 168 if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) 169 return; 170 171 dev_priv->mchbar_need_disable = false; 172 173 if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) { 174 pci_read_config_dword(dev_priv->bridge_dev, DEVEN, &temp); 175 enabled = !!(temp & DEVEN_MCHBAR_EN); 176 } else { 177 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); 178 enabled = temp & 1; 179 } 180 181 /* If it's already enabled, don't have to do anything */ 182 if (enabled) 183 return; 184 185 if (intel_alloc_mchbar_resource(dev_priv)) 186 return; 187 188 dev_priv->mchbar_need_disable = true; 189 190 /* Space is allocated or reserved, so enable it. */ 191 if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) { 192 pci_write_config_dword(dev_priv->bridge_dev, DEVEN, 193 temp | DEVEN_MCHBAR_EN); 194 } else { 195 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); 196 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1); 197 } 198 } 199 200 static void 201 intel_teardown_mchbar(struct drm_i915_private *dev_priv) 202 { 203 int mchbar_reg = GRAPHICS_VER(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915; 204 205 if (dev_priv->mchbar_need_disable) { 206 if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) { 207 u32 deven_val; 208 209 pci_read_config_dword(dev_priv->bridge_dev, DEVEN, 210 &deven_val); 211 deven_val &= ~DEVEN_MCHBAR_EN; 212 pci_write_config_dword(dev_priv->bridge_dev, DEVEN, 213 deven_val); 214 } else { 215 u32 mchbar_val; 216 217 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, 218 &mchbar_val); 219 mchbar_val &= ~1; 220 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, 221 mchbar_val); 222 } 223 } 224 225 if (dev_priv->mch_res.start) 226 release_resource(&dev_priv->mch_res); 227 } 228 229 static int i915_workqueues_init(struct drm_i915_private *dev_priv) 230 { 231 /* 232 * The i915 workqueue is primarily used for batched retirement of 233 * requests (and thus managing bo) once the task has been completed 234 * by the GPU. i915_retire_requests() is called directly when we 235 * need high-priority retirement, such as waiting for an explicit 236 * bo. 237 * 238 * It is also used for periodic low-priority events, such as 239 * idle-timers and recording error state. 240 * 241 * All tasks on the workqueue are expected to acquire the dev mutex 242 * so there is no point in running more than one instance of the 243 * workqueue at any time. Use an ordered one. 244 */ 245 dev_priv->wq = alloc_ordered_workqueue("i915", 0); 246 if (dev_priv->wq == NULL) 247 goto out_err; 248 249 dev_priv->hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0); 250 if (dev_priv->hotplug.dp_wq == NULL) 251 goto out_free_wq; 252 253 return 0; 254 255 out_free_wq: 256 destroy_workqueue(dev_priv->wq); 257 out_err: 258 drm_err(&dev_priv->drm, "Failed to allocate workqueues.\n"); 259 260 return -ENOMEM; 261 } 262 263 static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv) 264 { 265 destroy_workqueue(dev_priv->hotplug.dp_wq); 266 destroy_workqueue(dev_priv->wq); 267 } 268 269 /* 270 * We don't keep the workarounds for pre-production hardware, so we expect our 271 * driver to fail on these machines in one way or another. A little warning on 272 * dmesg may help both the user and the bug triagers. 273 * 274 * Our policy for removing pre-production workarounds is to keep the 275 * current gen workarounds as a guide to the bring-up of the next gen 276 * (workarounds have a habit of persisting!). Anything older than that 277 * should be removed along with the complications they introduce. 278 */ 279 static void intel_detect_preproduction_hw(struct drm_i915_private *dev_priv) 280 { 281 bool pre = false; 282 283 pre |= IS_HSW_EARLY_SDV(dev_priv); 284 pre |= IS_SKYLAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x6; 285 pre |= IS_BROXTON(dev_priv) && INTEL_REVID(dev_priv) < 0xA; 286 pre |= IS_KABYLAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x1; 287 pre |= IS_GEMINILAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x3; 288 pre |= IS_ICELAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x7; 289 290 if (pre) { 291 drm_err(&dev_priv->drm, "This is a pre-production stepping. " 292 "It may not be fully functional.\n"); 293 add_taint(TAINT_MACHINE_CHECK, LOCKDEP_STILL_OK); 294 } 295 } 296 297 static void sanitize_gpu(struct drm_i915_private *i915) 298 { 299 if (!INTEL_INFO(i915)->gpu_reset_clobbers_display) 300 __intel_gt_reset(to_gt(i915), ALL_ENGINES); 301 } 302 303 /** 304 * i915_driver_early_probe - setup state not requiring device access 305 * @dev_priv: device private 306 * 307 * Initialize everything that is a "SW-only" state, that is state not 308 * requiring accessing the device or exposing the driver via kernel internal 309 * or userspace interfaces. Example steps belonging here: lock initialization, 310 * system memory allocation, setting up device specific attributes and 311 * function hooks not requiring accessing the device. 312 */ 313 static int i915_driver_early_probe(struct drm_i915_private *dev_priv) 314 { 315 int ret = 0; 316 317 if (i915_inject_probe_failure(dev_priv)) 318 return -ENODEV; 319 320 intel_device_info_subplatform_init(dev_priv); 321 intel_step_init(dev_priv); 322 323 intel_gt_init_early(to_gt(dev_priv), dev_priv); 324 intel_uncore_mmio_debug_init_early(&dev_priv->mmio_debug); 325 intel_uncore_init_early(&dev_priv->uncore, to_gt(dev_priv)); 326 327 spin_lock_init(&dev_priv->irq_lock); 328 spin_lock_init(&dev_priv->gpu_error.lock); 329 mutex_init(&dev_priv->backlight_lock); 330 331 mutex_init(&dev_priv->sb_lock); 332 cpu_latency_qos_add_request(&dev_priv->sb_qos, PM_QOS_DEFAULT_VALUE); 333 334 mutex_init(&dev_priv->audio.mutex); 335 mutex_init(&dev_priv->wm.wm_mutex); 336 mutex_init(&dev_priv->pps_mutex); 337 mutex_init(&dev_priv->hdcp_comp_mutex); 338 339 i915_memcpy_init_early(dev_priv); 340 intel_runtime_pm_init_early(&dev_priv->runtime_pm); 341 342 ret = i915_workqueues_init(dev_priv); 343 if (ret < 0) 344 return ret; 345 346 ret = vlv_suspend_init(dev_priv); 347 if (ret < 0) 348 goto err_workqueues; 349 350 ret = intel_region_ttm_device_init(dev_priv); 351 if (ret) 352 goto err_ttm; 353 354 intel_wopcm_init_early(&dev_priv->wopcm); 355 356 __intel_gt_init_early(to_gt(dev_priv), dev_priv); 357 358 i915_gem_init_early(dev_priv); 359 360 /* This must be called before any calls to HAS_PCH_* */ 361 intel_detect_pch(dev_priv); 362 363 intel_pm_setup(dev_priv); 364 ret = intel_power_domains_init(dev_priv); 365 if (ret < 0) 366 goto err_gem; 367 intel_irq_init(dev_priv); 368 intel_init_display_hooks(dev_priv); 369 intel_init_clock_gating_hooks(dev_priv); 370 371 intel_detect_preproduction_hw(dev_priv); 372 373 return 0; 374 375 err_gem: 376 i915_gem_cleanup_early(dev_priv); 377 intel_gt_driver_late_release(to_gt(dev_priv)); 378 intel_region_ttm_device_fini(dev_priv); 379 err_ttm: 380 vlv_suspend_cleanup(dev_priv); 381 err_workqueues: 382 i915_workqueues_cleanup(dev_priv); 383 return ret; 384 } 385 386 /** 387 * i915_driver_late_release - cleanup the setup done in 388 * i915_driver_early_probe() 389 * @dev_priv: device private 390 */ 391 static void i915_driver_late_release(struct drm_i915_private *dev_priv) 392 { 393 intel_irq_fini(dev_priv); 394 intel_power_domains_cleanup(dev_priv); 395 i915_gem_cleanup_early(dev_priv); 396 intel_gt_driver_late_release(to_gt(dev_priv)); 397 intel_region_ttm_device_fini(dev_priv); 398 vlv_suspend_cleanup(dev_priv); 399 i915_workqueues_cleanup(dev_priv); 400 401 cpu_latency_qos_remove_request(&dev_priv->sb_qos); 402 mutex_destroy(&dev_priv->sb_lock); 403 404 i915_params_free(&dev_priv->params); 405 } 406 407 /** 408 * i915_driver_mmio_probe - setup device MMIO 409 * @dev_priv: device private 410 * 411 * Setup minimal device state necessary for MMIO accesses later in the 412 * initialization sequence. The setup here should avoid any other device-wide 413 * side effects or exposing the driver via kernel internal or user space 414 * interfaces. 415 */ 416 static int i915_driver_mmio_probe(struct drm_i915_private *dev_priv) 417 { 418 int ret; 419 420 if (i915_inject_probe_failure(dev_priv)) 421 return -ENODEV; 422 423 ret = i915_get_bridge_dev(dev_priv); 424 if (ret < 0) 425 return ret; 426 427 ret = intel_uncore_setup_mmio(&dev_priv->uncore); 428 if (ret < 0) 429 goto err_bridge; 430 431 ret = intel_uncore_init_mmio(&dev_priv->uncore); 432 if (ret) 433 goto err_mmio; 434 435 /* Try to make sure MCHBAR is enabled before poking at it */ 436 intel_setup_mchbar(dev_priv); 437 intel_device_info_runtime_init(dev_priv); 438 439 ret = intel_gt_init_mmio(to_gt(dev_priv)); 440 if (ret) 441 goto err_uncore; 442 443 /* As early as possible, scrub existing GPU state before clobbering */ 444 sanitize_gpu(dev_priv); 445 446 return 0; 447 448 err_uncore: 449 intel_teardown_mchbar(dev_priv); 450 intel_uncore_fini_mmio(&dev_priv->uncore); 451 err_mmio: 452 intel_uncore_cleanup_mmio(&dev_priv->uncore); 453 err_bridge: 454 pci_dev_put(dev_priv->bridge_dev); 455 456 return ret; 457 } 458 459 /** 460 * i915_driver_mmio_release - cleanup the setup done in i915_driver_mmio_probe() 461 * @dev_priv: device private 462 */ 463 static void i915_driver_mmio_release(struct drm_i915_private *dev_priv) 464 { 465 intel_teardown_mchbar(dev_priv); 466 intel_uncore_fini_mmio(&dev_priv->uncore); 467 intel_uncore_cleanup_mmio(&dev_priv->uncore); 468 pci_dev_put(dev_priv->bridge_dev); 469 } 470 471 static void intel_sanitize_options(struct drm_i915_private *dev_priv) 472 { 473 intel_gvt_sanitize_options(dev_priv); 474 } 475 476 /** 477 * i915_set_dma_info - set all relevant PCI dma info as configured for the 478 * platform 479 * @i915: valid i915 instance 480 * 481 * Set the dma max segment size, device and coherent masks. The dma mask set 482 * needs to occur before i915_ggtt_probe_hw. 483 * 484 * A couple of platforms have special needs. Address them as well. 485 * 486 */ 487 static int i915_set_dma_info(struct drm_i915_private *i915) 488 { 489 unsigned int mask_size = INTEL_INFO(i915)->dma_mask_size; 490 int ret; 491 492 GEM_BUG_ON(!mask_size); 493 494 /* 495 * We don't have a max segment size, so set it to the max so sg's 496 * debugging layer doesn't complain 497 */ 498 dma_set_max_seg_size(i915->drm.dev, UINT_MAX); 499 500 ret = dma_set_mask(i915->drm.dev, DMA_BIT_MASK(mask_size)); 501 if (ret) 502 goto mask_err; 503 504 /* overlay on gen2 is broken and can't address above 1G */ 505 if (GRAPHICS_VER(i915) == 2) 506 mask_size = 30; 507 508 /* 509 * 965GM sometimes incorrectly writes to hardware status page (HWS) 510 * using 32bit addressing, overwriting memory if HWS is located 511 * above 4GB. 512 * 513 * The documentation also mentions an issue with undefined 514 * behaviour if any general state is accessed within a page above 4GB, 515 * which also needs to be handled carefully. 516 */ 517 if (IS_I965G(i915) || IS_I965GM(i915)) 518 mask_size = 32; 519 520 ret = dma_set_coherent_mask(i915->drm.dev, DMA_BIT_MASK(mask_size)); 521 if (ret) 522 goto mask_err; 523 524 return 0; 525 526 mask_err: 527 drm_err(&i915->drm, "Can't set DMA mask/consistent mask (%d)\n", ret); 528 return ret; 529 } 530 531 /** 532 * i915_driver_hw_probe - setup state requiring device access 533 * @dev_priv: device private 534 * 535 * Setup state that requires accessing the device, but doesn't require 536 * exposing the driver via kernel internal or userspace interfaces. 537 */ 538 static int i915_driver_hw_probe(struct drm_i915_private *dev_priv) 539 { 540 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 541 int ret; 542 543 if (i915_inject_probe_failure(dev_priv)) 544 return -ENODEV; 545 546 if (HAS_PPGTT(dev_priv)) { 547 if (intel_vgpu_active(dev_priv) && 548 !intel_vgpu_has_full_ppgtt(dev_priv)) { 549 i915_report_error(dev_priv, 550 "incompatible vGPU found, support for isolated ppGTT required\n"); 551 return -ENXIO; 552 } 553 } 554 555 if (HAS_EXECLISTS(dev_priv)) { 556 /* 557 * Older GVT emulation depends upon intercepting CSB mmio, 558 * which we no longer use, preferring to use the HWSP cache 559 * instead. 560 */ 561 if (intel_vgpu_active(dev_priv) && 562 !intel_vgpu_has_hwsp_emulation(dev_priv)) { 563 i915_report_error(dev_priv, 564 "old vGPU host found, support for HWSP emulation required\n"); 565 return -ENXIO; 566 } 567 } 568 569 intel_sanitize_options(dev_priv); 570 571 /* needs to be done before ggtt probe */ 572 intel_dram_edram_detect(dev_priv); 573 574 ret = i915_set_dma_info(dev_priv); 575 if (ret) 576 return ret; 577 578 i915_perf_init(dev_priv); 579 580 ret = intel_gt_assign_ggtt(to_gt(dev_priv)); 581 if (ret) 582 goto err_perf; 583 584 ret = i915_ggtt_probe_hw(dev_priv); 585 if (ret) 586 goto err_perf; 587 588 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, dev_priv->drm.driver); 589 if (ret) 590 goto err_ggtt; 591 592 ret = i915_ggtt_init_hw(dev_priv); 593 if (ret) 594 goto err_ggtt; 595 596 ret = intel_memory_regions_hw_probe(dev_priv); 597 if (ret) 598 goto err_ggtt; 599 600 ret = intel_gt_probe_lmem(to_gt(dev_priv)); 601 if (ret) 602 goto err_mem_regions; 603 604 ret = i915_ggtt_enable_hw(dev_priv); 605 if (ret) { 606 drm_err(&dev_priv->drm, "failed to enable GGTT\n"); 607 goto err_mem_regions; 608 } 609 610 pci_set_master(pdev); 611 612 /* On the 945G/GM, the chipset reports the MSI capability on the 613 * integrated graphics even though the support isn't actually there 614 * according to the published specs. It doesn't appear to function 615 * correctly in testing on 945G. 616 * This may be a side effect of MSI having been made available for PEG 617 * and the registers being closely associated. 618 * 619 * According to chipset errata, on the 965GM, MSI interrupts may 620 * be lost or delayed, and was defeatured. MSI interrupts seem to 621 * get lost on g4x as well, and interrupt delivery seems to stay 622 * properly dead afterwards. So we'll just disable them for all 623 * pre-gen5 chipsets. 624 * 625 * dp aux and gmbus irq on gen4 seems to be able to generate legacy 626 * interrupts even when in MSI mode. This results in spurious 627 * interrupt warnings if the legacy irq no. is shared with another 628 * device. The kernel then disables that interrupt source and so 629 * prevents the other device from working properly. 630 */ 631 if (GRAPHICS_VER(dev_priv) >= 5) { 632 if (pci_enable_msi(pdev) < 0) 633 drm_dbg(&dev_priv->drm, "can't enable MSI"); 634 } 635 636 ret = intel_gvt_init(dev_priv); 637 if (ret) 638 goto err_msi; 639 640 intel_opregion_setup(dev_priv); 641 642 ret = intel_pcode_init(dev_priv); 643 if (ret) 644 goto err_msi; 645 646 /* 647 * Fill the dram structure to get the system dram info. This will be 648 * used for memory latency calculation. 649 */ 650 intel_dram_detect(dev_priv); 651 652 intel_bw_init_hw(dev_priv); 653 654 return 0; 655 656 err_msi: 657 if (pdev->msi_enabled) 658 pci_disable_msi(pdev); 659 err_mem_regions: 660 intel_memory_regions_driver_release(dev_priv); 661 err_ggtt: 662 i915_ggtt_driver_release(dev_priv); 663 i915_gem_drain_freed_objects(dev_priv); 664 i915_ggtt_driver_late_release(dev_priv); 665 err_perf: 666 i915_perf_fini(dev_priv); 667 return ret; 668 } 669 670 /** 671 * i915_driver_hw_remove - cleanup the setup done in i915_driver_hw_probe() 672 * @dev_priv: device private 673 */ 674 static void i915_driver_hw_remove(struct drm_i915_private *dev_priv) 675 { 676 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 677 678 i915_perf_fini(dev_priv); 679 680 if (pdev->msi_enabled) 681 pci_disable_msi(pdev); 682 } 683 684 /** 685 * i915_driver_register - register the driver with the rest of the system 686 * @dev_priv: device private 687 * 688 * Perform any steps necessary to make the driver available via kernel 689 * internal or userspace interfaces. 690 */ 691 static void i915_driver_register(struct drm_i915_private *dev_priv) 692 { 693 struct drm_device *dev = &dev_priv->drm; 694 695 i915_gem_driver_register(dev_priv); 696 i915_pmu_register(dev_priv); 697 698 intel_vgpu_register(dev_priv); 699 700 /* Reveal our presence to userspace */ 701 if (drm_dev_register(dev, 0)) { 702 drm_err(&dev_priv->drm, 703 "Failed to register driver for userspace access!\n"); 704 return; 705 } 706 707 i915_debugfs_register(dev_priv); 708 i915_setup_sysfs(dev_priv); 709 710 /* Depends on sysfs having been initialized */ 711 i915_perf_register(dev_priv); 712 713 intel_gt_driver_register(to_gt(dev_priv)); 714 715 intel_display_driver_register(dev_priv); 716 717 intel_power_domains_enable(dev_priv); 718 intel_runtime_pm_enable(&dev_priv->runtime_pm); 719 720 intel_register_dsm_handler(); 721 722 if (i915_switcheroo_register(dev_priv)) 723 drm_err(&dev_priv->drm, "Failed to register vga switcheroo!\n"); 724 } 725 726 /** 727 * i915_driver_unregister - cleanup the registration done in i915_driver_regiser() 728 * @dev_priv: device private 729 */ 730 static void i915_driver_unregister(struct drm_i915_private *dev_priv) 731 { 732 i915_switcheroo_unregister(dev_priv); 733 734 intel_unregister_dsm_handler(); 735 736 intel_runtime_pm_disable(&dev_priv->runtime_pm); 737 intel_power_domains_disable(dev_priv); 738 739 intel_display_driver_unregister(dev_priv); 740 741 intel_gt_driver_unregister(to_gt(dev_priv)); 742 743 i915_perf_unregister(dev_priv); 744 i915_pmu_unregister(dev_priv); 745 746 i915_teardown_sysfs(dev_priv); 747 drm_dev_unplug(&dev_priv->drm); 748 749 i915_gem_driver_unregister(dev_priv); 750 } 751 752 void 753 i915_print_iommu_status(struct drm_i915_private *i915, struct drm_printer *p) 754 { 755 drm_printf(p, "iommu: %s\n", enableddisabled(intel_vtd_active(i915))); 756 } 757 758 static void i915_welcome_messages(struct drm_i915_private *dev_priv) 759 { 760 if (drm_debug_enabled(DRM_UT_DRIVER)) { 761 struct drm_printer p = drm_debug_printer("i915 device info:"); 762 763 drm_printf(&p, "pciid=0x%04x rev=0x%02x platform=%s (subplatform=0x%x) gen=%i\n", 764 INTEL_DEVID(dev_priv), 765 INTEL_REVID(dev_priv), 766 intel_platform_name(INTEL_INFO(dev_priv)->platform), 767 intel_subplatform(RUNTIME_INFO(dev_priv), 768 INTEL_INFO(dev_priv)->platform), 769 GRAPHICS_VER(dev_priv)); 770 771 intel_device_info_print_static(INTEL_INFO(dev_priv), &p); 772 intel_device_info_print_runtime(RUNTIME_INFO(dev_priv), &p); 773 i915_print_iommu_status(dev_priv, &p); 774 intel_gt_info_print(&to_gt(dev_priv)->info, &p); 775 } 776 777 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG)) 778 drm_info(&dev_priv->drm, "DRM_I915_DEBUG enabled\n"); 779 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)) 780 drm_info(&dev_priv->drm, "DRM_I915_DEBUG_GEM enabled\n"); 781 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)) 782 drm_info(&dev_priv->drm, 783 "DRM_I915_DEBUG_RUNTIME_PM enabled\n"); 784 } 785 786 static struct drm_i915_private * 787 i915_driver_create(struct pci_dev *pdev, const struct pci_device_id *ent) 788 { 789 const struct intel_device_info *match_info = 790 (struct intel_device_info *)ent->driver_data; 791 struct intel_device_info *device_info; 792 struct drm_i915_private *i915; 793 794 i915 = devm_drm_dev_alloc(&pdev->dev, &i915_drm_driver, 795 struct drm_i915_private, drm); 796 if (IS_ERR(i915)) 797 return i915; 798 799 pci_set_drvdata(pdev, i915); 800 801 /* Device parameters start as a copy of module parameters. */ 802 i915_params_copy(&i915->params, &i915_modparams); 803 804 /* Setup the write-once "constant" device info */ 805 device_info = mkwrite_device_info(i915); 806 memcpy(device_info, match_info, sizeof(*device_info)); 807 RUNTIME_INFO(i915)->device_id = pdev->device; 808 809 return i915; 810 } 811 812 /** 813 * i915_driver_probe - setup chip and create an initial config 814 * @pdev: PCI device 815 * @ent: matching PCI ID entry 816 * 817 * The driver probe routine has to do several things: 818 * - drive output discovery via intel_modeset_init() 819 * - initialize the memory manager 820 * - allocate initial config memory 821 * - setup the DRM framebuffer with the allocated memory 822 */ 823 int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 824 { 825 const struct intel_device_info *match_info = 826 (struct intel_device_info *)ent->driver_data; 827 struct drm_i915_private *i915; 828 int ret; 829 830 i915 = i915_driver_create(pdev, ent); 831 if (IS_ERR(i915)) 832 return PTR_ERR(i915); 833 834 /* Disable nuclear pageflip by default on pre-ILK */ 835 if (!i915->params.nuclear_pageflip && match_info->graphics.ver < 5) 836 i915->drm.driver_features &= ~DRIVER_ATOMIC; 837 838 ret = pci_enable_device(pdev); 839 if (ret) 840 goto out_fini; 841 842 ret = i915_driver_early_probe(i915); 843 if (ret < 0) 844 goto out_pci_disable; 845 846 disable_rpm_wakeref_asserts(&i915->runtime_pm); 847 848 intel_vgpu_detect(i915); 849 850 ret = i915_driver_mmio_probe(i915); 851 if (ret < 0) 852 goto out_runtime_pm_put; 853 854 ret = i915_driver_hw_probe(i915); 855 if (ret < 0) 856 goto out_cleanup_mmio; 857 858 ret = intel_modeset_init_noirq(i915); 859 if (ret < 0) 860 goto out_cleanup_hw; 861 862 ret = intel_irq_install(i915); 863 if (ret) 864 goto out_cleanup_modeset; 865 866 ret = intel_modeset_init_nogem(i915); 867 if (ret) 868 goto out_cleanup_irq; 869 870 ret = i915_gem_init(i915); 871 if (ret) 872 goto out_cleanup_modeset2; 873 874 ret = intel_modeset_init(i915); 875 if (ret) 876 goto out_cleanup_gem; 877 878 i915_driver_register(i915); 879 880 enable_rpm_wakeref_asserts(&i915->runtime_pm); 881 882 i915_welcome_messages(i915); 883 884 i915->do_release = true; 885 886 return 0; 887 888 out_cleanup_gem: 889 i915_gem_suspend(i915); 890 i915_gem_driver_remove(i915); 891 i915_gem_driver_release(i915); 892 out_cleanup_modeset2: 893 /* FIXME clean up the error path */ 894 intel_modeset_driver_remove(i915); 895 intel_irq_uninstall(i915); 896 intel_modeset_driver_remove_noirq(i915); 897 goto out_cleanup_modeset; 898 out_cleanup_irq: 899 intel_irq_uninstall(i915); 900 out_cleanup_modeset: 901 intel_modeset_driver_remove_nogem(i915); 902 out_cleanup_hw: 903 i915_driver_hw_remove(i915); 904 intel_memory_regions_driver_release(i915); 905 i915_ggtt_driver_release(i915); 906 i915_gem_drain_freed_objects(i915); 907 i915_ggtt_driver_late_release(i915); 908 out_cleanup_mmio: 909 i915_driver_mmio_release(i915); 910 out_runtime_pm_put: 911 enable_rpm_wakeref_asserts(&i915->runtime_pm); 912 i915_driver_late_release(i915); 913 out_pci_disable: 914 pci_disable_device(pdev); 915 out_fini: 916 i915_probe_error(i915, "Device initialization failed (%d)\n", ret); 917 return ret; 918 } 919 920 void i915_driver_remove(struct drm_i915_private *i915) 921 { 922 disable_rpm_wakeref_asserts(&i915->runtime_pm); 923 924 i915_driver_unregister(i915); 925 926 /* Flush any external code that still may be under the RCU lock */ 927 synchronize_rcu(); 928 929 i915_gem_suspend(i915); 930 931 intel_gvt_driver_remove(i915); 932 933 intel_modeset_driver_remove(i915); 934 935 intel_irq_uninstall(i915); 936 937 intel_modeset_driver_remove_noirq(i915); 938 939 i915_reset_error_state(i915); 940 i915_gem_driver_remove(i915); 941 942 intel_modeset_driver_remove_nogem(i915); 943 944 i915_driver_hw_remove(i915); 945 946 enable_rpm_wakeref_asserts(&i915->runtime_pm); 947 } 948 949 static void i915_driver_release(struct drm_device *dev) 950 { 951 struct drm_i915_private *dev_priv = to_i915(dev); 952 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; 953 954 if (!dev_priv->do_release) 955 return; 956 957 disable_rpm_wakeref_asserts(rpm); 958 959 i915_gem_driver_release(dev_priv); 960 961 intel_memory_regions_driver_release(dev_priv); 962 i915_ggtt_driver_release(dev_priv); 963 i915_gem_drain_freed_objects(dev_priv); 964 i915_ggtt_driver_late_release(dev_priv); 965 966 i915_driver_mmio_release(dev_priv); 967 968 enable_rpm_wakeref_asserts(rpm); 969 intel_runtime_pm_driver_release(rpm); 970 971 i915_driver_late_release(dev_priv); 972 } 973 974 static int i915_driver_open(struct drm_device *dev, struct drm_file *file) 975 { 976 struct drm_i915_private *i915 = to_i915(dev); 977 int ret; 978 979 ret = i915_gem_open(i915, file); 980 if (ret) 981 return ret; 982 983 return 0; 984 } 985 986 /** 987 * i915_driver_lastclose - clean up after all DRM clients have exited 988 * @dev: DRM device 989 * 990 * Take care of cleaning up after all DRM clients have exited. In the 991 * mode setting case, we want to restore the kernel's initial mode (just 992 * in case the last client left us in a bad state). 993 * 994 * Additionally, in the non-mode setting case, we'll tear down the GTT 995 * and DMA structures, since the kernel won't be using them, and clea 996 * up any GEM state. 997 */ 998 static void i915_driver_lastclose(struct drm_device *dev) 999 { 1000 struct drm_i915_private *i915 = to_i915(dev); 1001 1002 intel_fbdev_restore_mode(dev); 1003 1004 if (HAS_DISPLAY(i915)) 1005 vga_switcheroo_process_delayed_switch(); 1006 } 1007 1008 static void i915_driver_postclose(struct drm_device *dev, struct drm_file *file) 1009 { 1010 struct drm_i915_file_private *file_priv = file->driver_priv; 1011 1012 i915_gem_context_close(file); 1013 1014 kfree_rcu(file_priv, rcu); 1015 1016 /* Catch up with all the deferred frees from "this" client */ 1017 i915_gem_flush_free_objects(to_i915(dev)); 1018 } 1019 1020 static void intel_suspend_encoders(struct drm_i915_private *dev_priv) 1021 { 1022 struct drm_device *dev = &dev_priv->drm; 1023 struct intel_encoder *encoder; 1024 1025 if (!HAS_DISPLAY(dev_priv)) 1026 return; 1027 1028 drm_modeset_lock_all(dev); 1029 for_each_intel_encoder(dev, encoder) 1030 if (encoder->suspend) 1031 encoder->suspend(encoder); 1032 drm_modeset_unlock_all(dev); 1033 } 1034 1035 static void intel_shutdown_encoders(struct drm_i915_private *dev_priv) 1036 { 1037 struct drm_device *dev = &dev_priv->drm; 1038 struct intel_encoder *encoder; 1039 1040 if (!HAS_DISPLAY(dev_priv)) 1041 return; 1042 1043 drm_modeset_lock_all(dev); 1044 for_each_intel_encoder(dev, encoder) 1045 if (encoder->shutdown) 1046 encoder->shutdown(encoder); 1047 drm_modeset_unlock_all(dev); 1048 } 1049 1050 void i915_driver_shutdown(struct drm_i915_private *i915) 1051 { 1052 disable_rpm_wakeref_asserts(&i915->runtime_pm); 1053 intel_runtime_pm_disable(&i915->runtime_pm); 1054 intel_power_domains_disable(i915); 1055 1056 i915_gem_suspend(i915); 1057 1058 if (HAS_DISPLAY(i915)) { 1059 drm_kms_helper_poll_disable(&i915->drm); 1060 1061 drm_atomic_helper_shutdown(&i915->drm); 1062 } 1063 1064 intel_dp_mst_suspend(i915); 1065 1066 intel_runtime_pm_disable_interrupts(i915); 1067 intel_hpd_cancel_work(i915); 1068 1069 intel_suspend_encoders(i915); 1070 intel_shutdown_encoders(i915); 1071 1072 intel_dmc_ucode_suspend(i915); 1073 1074 /* 1075 * The only requirement is to reboot with display DC states disabled, 1076 * for now leaving all display power wells in the INIT power domain 1077 * enabled. 1078 * 1079 * TODO: 1080 * - unify the pci_driver::shutdown sequence here with the 1081 * pci_driver.driver.pm.poweroff,poweroff_late sequence. 1082 * - unify the driver remove and system/runtime suspend sequences with 1083 * the above unified shutdown/poweroff sequence. 1084 */ 1085 intel_power_domains_driver_remove(i915); 1086 enable_rpm_wakeref_asserts(&i915->runtime_pm); 1087 1088 intel_runtime_pm_driver_release(&i915->runtime_pm); 1089 } 1090 1091 static bool suspend_to_idle(struct drm_i915_private *dev_priv) 1092 { 1093 #if IS_ENABLED(CONFIG_ACPI_SLEEP) 1094 if (acpi_target_system_state() < ACPI_STATE_S3) 1095 return true; 1096 #endif 1097 return false; 1098 } 1099 1100 static int i915_drm_prepare(struct drm_device *dev) 1101 { 1102 struct drm_i915_private *i915 = to_i915(dev); 1103 1104 /* 1105 * NB intel_display_suspend() may issue new requests after we've 1106 * ostensibly marked the GPU as ready-to-sleep here. We need to 1107 * split out that work and pull it forward so that after point, 1108 * the GPU is not woken again. 1109 */ 1110 return i915_gem_backup_suspend(i915); 1111 } 1112 1113 static int i915_drm_suspend(struct drm_device *dev) 1114 { 1115 struct drm_i915_private *dev_priv = to_i915(dev); 1116 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 1117 pci_power_t opregion_target_state; 1118 1119 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm); 1120 1121 /* We do a lot of poking in a lot of registers, make sure they work 1122 * properly. */ 1123 intel_power_domains_disable(dev_priv); 1124 if (HAS_DISPLAY(dev_priv)) 1125 drm_kms_helper_poll_disable(dev); 1126 1127 pci_save_state(pdev); 1128 1129 intel_display_suspend(dev); 1130 1131 intel_dp_mst_suspend(dev_priv); 1132 1133 intel_runtime_pm_disable_interrupts(dev_priv); 1134 intel_hpd_cancel_work(dev_priv); 1135 1136 intel_suspend_encoders(dev_priv); 1137 1138 intel_suspend_hw(dev_priv); 1139 1140 /* Must be called before GGTT is suspended. */ 1141 intel_dpt_suspend(dev_priv); 1142 i915_ggtt_suspend(to_gt(dev_priv)->ggtt); 1143 1144 i915_save_display(dev_priv); 1145 1146 opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold; 1147 intel_opregion_suspend(dev_priv, opregion_target_state); 1148 1149 intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true); 1150 1151 dev_priv->suspend_count++; 1152 1153 intel_dmc_ucode_suspend(dev_priv); 1154 1155 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm); 1156 1157 return 0; 1158 } 1159 1160 static enum i915_drm_suspend_mode 1161 get_suspend_mode(struct drm_i915_private *dev_priv, bool hibernate) 1162 { 1163 if (hibernate) 1164 return I915_DRM_SUSPEND_HIBERNATE; 1165 1166 if (suspend_to_idle(dev_priv)) 1167 return I915_DRM_SUSPEND_IDLE; 1168 1169 return I915_DRM_SUSPEND_MEM; 1170 } 1171 1172 static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation) 1173 { 1174 struct drm_i915_private *dev_priv = to_i915(dev); 1175 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 1176 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; 1177 int ret; 1178 1179 disable_rpm_wakeref_asserts(rpm); 1180 1181 i915_gem_suspend_late(dev_priv); 1182 1183 intel_uncore_suspend(&dev_priv->uncore); 1184 1185 intel_power_domains_suspend(dev_priv, 1186 get_suspend_mode(dev_priv, hibernation)); 1187 1188 intel_display_power_suspend_late(dev_priv); 1189 1190 ret = vlv_suspend_complete(dev_priv); 1191 if (ret) { 1192 drm_err(&dev_priv->drm, "Suspend complete failed: %d\n", ret); 1193 intel_power_domains_resume(dev_priv); 1194 1195 goto out; 1196 } 1197 1198 /* 1199 * FIXME: Temporary hammer to avoid freezing the machine on our DGFX 1200 * This should be totally removed when we handle the pci states properly 1201 * on runtime PM and on s2idle cases. 1202 */ 1203 if (suspend_to_idle(dev_priv)) 1204 pci_d3cold_disable(pdev); 1205 1206 pci_disable_device(pdev); 1207 /* 1208 * During hibernation on some platforms the BIOS may try to access 1209 * the device even though it's already in D3 and hang the machine. So 1210 * leave the device in D0 on those platforms and hope the BIOS will 1211 * power down the device properly. The issue was seen on multiple old 1212 * GENs with different BIOS vendors, so having an explicit blacklist 1213 * is inpractical; apply the workaround on everything pre GEN6. The 1214 * platforms where the issue was seen: 1215 * Lenovo Thinkpad X301, X61s, X60, T60, X41 1216 * Fujitsu FSC S7110 1217 * Acer Aspire 1830T 1218 */ 1219 if (!(hibernation && GRAPHICS_VER(dev_priv) < 6)) 1220 pci_set_power_state(pdev, PCI_D3hot); 1221 1222 out: 1223 enable_rpm_wakeref_asserts(rpm); 1224 if (!dev_priv->uncore.user_forcewake_count) 1225 intel_runtime_pm_driver_release(rpm); 1226 1227 return ret; 1228 } 1229 1230 int i915_driver_suspend_switcheroo(struct drm_i915_private *i915, 1231 pm_message_t state) 1232 { 1233 int error; 1234 1235 if (drm_WARN_ON_ONCE(&i915->drm, state.event != PM_EVENT_SUSPEND && 1236 state.event != PM_EVENT_FREEZE)) 1237 return -EINVAL; 1238 1239 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1240 return 0; 1241 1242 error = i915_drm_suspend(&i915->drm); 1243 if (error) 1244 return error; 1245 1246 return i915_drm_suspend_late(&i915->drm, false); 1247 } 1248 1249 static int i915_drm_resume(struct drm_device *dev) 1250 { 1251 struct drm_i915_private *dev_priv = to_i915(dev); 1252 int ret; 1253 1254 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm); 1255 1256 ret = intel_pcode_init(dev_priv); 1257 if (ret) 1258 return ret; 1259 1260 sanitize_gpu(dev_priv); 1261 1262 ret = i915_ggtt_enable_hw(dev_priv); 1263 if (ret) 1264 drm_err(&dev_priv->drm, "failed to re-enable GGTT\n"); 1265 1266 i915_ggtt_resume(to_gt(dev_priv)->ggtt); 1267 /* Must be called after GGTT is resumed. */ 1268 intel_dpt_resume(dev_priv); 1269 1270 intel_dmc_ucode_resume(dev_priv); 1271 1272 i915_restore_display(dev_priv); 1273 intel_pps_unlock_regs_wa(dev_priv); 1274 1275 intel_init_pch_refclk(dev_priv); 1276 1277 /* 1278 * Interrupts have to be enabled before any batches are run. If not the 1279 * GPU will hang. i915_gem_init_hw() will initiate batches to 1280 * update/restore the context. 1281 * 1282 * drm_mode_config_reset() needs AUX interrupts. 1283 * 1284 * Modeset enabling in intel_modeset_init_hw() also needs working 1285 * interrupts. 1286 */ 1287 intel_runtime_pm_enable_interrupts(dev_priv); 1288 1289 if (HAS_DISPLAY(dev_priv)) 1290 drm_mode_config_reset(dev); 1291 1292 i915_gem_resume(dev_priv); 1293 1294 intel_modeset_init_hw(dev_priv); 1295 intel_init_clock_gating(dev_priv); 1296 intel_hpd_init(dev_priv); 1297 1298 /* MST sideband requires HPD interrupts enabled */ 1299 intel_dp_mst_resume(dev_priv); 1300 intel_display_resume(dev); 1301 1302 intel_hpd_poll_disable(dev_priv); 1303 if (HAS_DISPLAY(dev_priv)) 1304 drm_kms_helper_poll_enable(dev); 1305 1306 intel_opregion_resume(dev_priv); 1307 1308 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false); 1309 1310 intel_power_domains_enable(dev_priv); 1311 1312 intel_gvt_resume(dev_priv); 1313 1314 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm); 1315 1316 return 0; 1317 } 1318 1319 static int i915_drm_resume_early(struct drm_device *dev) 1320 { 1321 struct drm_i915_private *dev_priv = to_i915(dev); 1322 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 1323 int ret; 1324 1325 /* 1326 * We have a resume ordering issue with the snd-hda driver also 1327 * requiring our device to be power up. Due to the lack of a 1328 * parent/child relationship we currently solve this with an early 1329 * resume hook. 1330 * 1331 * FIXME: This should be solved with a special hdmi sink device or 1332 * similar so that power domains can be employed. 1333 */ 1334 1335 /* 1336 * Note that we need to set the power state explicitly, since we 1337 * powered off the device during freeze and the PCI core won't power 1338 * it back up for us during thaw. Powering off the device during 1339 * freeze is not a hard requirement though, and during the 1340 * suspend/resume phases the PCI core makes sure we get here with the 1341 * device powered on. So in case we change our freeze logic and keep 1342 * the device powered we can also remove the following set power state 1343 * call. 1344 */ 1345 ret = pci_set_power_state(pdev, PCI_D0); 1346 if (ret) { 1347 drm_err(&dev_priv->drm, 1348 "failed to set PCI D0 power state (%d)\n", ret); 1349 return ret; 1350 } 1351 1352 /* 1353 * Note that pci_enable_device() first enables any parent bridge 1354 * device and only then sets the power state for this device. The 1355 * bridge enabling is a nop though, since bridge devices are resumed 1356 * first. The order of enabling power and enabling the device is 1357 * imposed by the PCI core as described above, so here we preserve the 1358 * same order for the freeze/thaw phases. 1359 * 1360 * TODO: eventually we should remove pci_disable_device() / 1361 * pci_enable_enable_device() from suspend/resume. Due to how they 1362 * depend on the device enable refcount we can't anyway depend on them 1363 * disabling/enabling the device. 1364 */ 1365 if (pci_enable_device(pdev)) 1366 return -EIO; 1367 1368 pci_set_master(pdev); 1369 1370 pci_d3cold_enable(pdev); 1371 1372 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm); 1373 1374 ret = vlv_resume_prepare(dev_priv, false); 1375 if (ret) 1376 drm_err(&dev_priv->drm, 1377 "Resume prepare failed: %d, continuing anyway\n", ret); 1378 1379 intel_uncore_resume_early(&dev_priv->uncore); 1380 1381 intel_gt_check_and_clear_faults(to_gt(dev_priv)); 1382 1383 intel_display_power_resume_early(dev_priv); 1384 1385 intel_power_domains_resume(dev_priv); 1386 1387 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm); 1388 1389 return ret; 1390 } 1391 1392 int i915_driver_resume_switcheroo(struct drm_i915_private *i915) 1393 { 1394 int ret; 1395 1396 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1397 return 0; 1398 1399 ret = i915_drm_resume_early(&i915->drm); 1400 if (ret) 1401 return ret; 1402 1403 return i915_drm_resume(&i915->drm); 1404 } 1405 1406 static int i915_pm_prepare(struct device *kdev) 1407 { 1408 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1409 1410 if (!i915) { 1411 dev_err(kdev, "DRM not initialized, aborting suspend.\n"); 1412 return -ENODEV; 1413 } 1414 1415 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1416 return 0; 1417 1418 return i915_drm_prepare(&i915->drm); 1419 } 1420 1421 static int i915_pm_suspend(struct device *kdev) 1422 { 1423 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1424 1425 if (!i915) { 1426 dev_err(kdev, "DRM not initialized, aborting suspend.\n"); 1427 return -ENODEV; 1428 } 1429 1430 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1431 return 0; 1432 1433 return i915_drm_suspend(&i915->drm); 1434 } 1435 1436 static int i915_pm_suspend_late(struct device *kdev) 1437 { 1438 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1439 1440 /* 1441 * We have a suspend ordering issue with the snd-hda driver also 1442 * requiring our device to be power up. Due to the lack of a 1443 * parent/child relationship we currently solve this with an late 1444 * suspend hook. 1445 * 1446 * FIXME: This should be solved with a special hdmi sink device or 1447 * similar so that power domains can be employed. 1448 */ 1449 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1450 return 0; 1451 1452 return i915_drm_suspend_late(&i915->drm, false); 1453 } 1454 1455 static int i915_pm_poweroff_late(struct device *kdev) 1456 { 1457 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1458 1459 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1460 return 0; 1461 1462 return i915_drm_suspend_late(&i915->drm, true); 1463 } 1464 1465 static int i915_pm_resume_early(struct device *kdev) 1466 { 1467 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1468 1469 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1470 return 0; 1471 1472 return i915_drm_resume_early(&i915->drm); 1473 } 1474 1475 static int i915_pm_resume(struct device *kdev) 1476 { 1477 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1478 1479 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1480 return 0; 1481 1482 return i915_drm_resume(&i915->drm); 1483 } 1484 1485 /* freeze: before creating the hibernation_image */ 1486 static int i915_pm_freeze(struct device *kdev) 1487 { 1488 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1489 int ret; 1490 1491 if (i915->drm.switch_power_state != DRM_SWITCH_POWER_OFF) { 1492 ret = i915_drm_suspend(&i915->drm); 1493 if (ret) 1494 return ret; 1495 } 1496 1497 ret = i915_gem_freeze(i915); 1498 if (ret) 1499 return ret; 1500 1501 return 0; 1502 } 1503 1504 static int i915_pm_freeze_late(struct device *kdev) 1505 { 1506 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1507 int ret; 1508 1509 if (i915->drm.switch_power_state != DRM_SWITCH_POWER_OFF) { 1510 ret = i915_drm_suspend_late(&i915->drm, true); 1511 if (ret) 1512 return ret; 1513 } 1514 1515 ret = i915_gem_freeze_late(i915); 1516 if (ret) 1517 return ret; 1518 1519 return 0; 1520 } 1521 1522 /* thaw: called after creating the hibernation image, but before turning off. */ 1523 static int i915_pm_thaw_early(struct device *kdev) 1524 { 1525 return i915_pm_resume_early(kdev); 1526 } 1527 1528 static int i915_pm_thaw(struct device *kdev) 1529 { 1530 return i915_pm_resume(kdev); 1531 } 1532 1533 /* restore: called after loading the hibernation image. */ 1534 static int i915_pm_restore_early(struct device *kdev) 1535 { 1536 return i915_pm_resume_early(kdev); 1537 } 1538 1539 static int i915_pm_restore(struct device *kdev) 1540 { 1541 return i915_pm_resume(kdev); 1542 } 1543 1544 static int intel_runtime_suspend(struct device *kdev) 1545 { 1546 struct drm_i915_private *dev_priv = kdev_to_i915(kdev); 1547 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; 1548 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 1549 int ret; 1550 1551 if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv))) 1552 return -ENODEV; 1553 1554 drm_dbg_kms(&dev_priv->drm, "Suspending device\n"); 1555 1556 disable_rpm_wakeref_asserts(rpm); 1557 1558 /* 1559 * We are safe here against re-faults, since the fault handler takes 1560 * an RPM reference. 1561 */ 1562 i915_gem_runtime_suspend(dev_priv); 1563 1564 intel_gt_runtime_suspend(to_gt(dev_priv)); 1565 1566 intel_runtime_pm_disable_interrupts(dev_priv); 1567 1568 intel_uncore_suspend(&dev_priv->uncore); 1569 1570 intel_display_power_suspend(dev_priv); 1571 1572 ret = vlv_suspend_complete(dev_priv); 1573 if (ret) { 1574 drm_err(&dev_priv->drm, 1575 "Runtime suspend failed, disabling it (%d)\n", ret); 1576 intel_uncore_runtime_resume(&dev_priv->uncore); 1577 1578 intel_runtime_pm_enable_interrupts(dev_priv); 1579 1580 intel_gt_runtime_resume(to_gt(dev_priv)); 1581 1582 enable_rpm_wakeref_asserts(rpm); 1583 1584 return ret; 1585 } 1586 1587 enable_rpm_wakeref_asserts(rpm); 1588 intel_runtime_pm_driver_release(rpm); 1589 1590 if (intel_uncore_arm_unclaimed_mmio_detection(&dev_priv->uncore)) 1591 drm_err(&dev_priv->drm, 1592 "Unclaimed access detected prior to suspending\n"); 1593 1594 /* 1595 * FIXME: Temporary hammer to avoid freezing the machine on our DGFX 1596 * This should be totally removed when we handle the pci states properly 1597 * on runtime PM and on s2idle cases. 1598 */ 1599 pci_d3cold_disable(pdev); 1600 rpm->suspended = true; 1601 1602 /* 1603 * FIXME: We really should find a document that references the arguments 1604 * used below! 1605 */ 1606 if (IS_BROADWELL(dev_priv)) { 1607 /* 1608 * On Broadwell, if we use PCI_D1 the PCH DDI ports will stop 1609 * being detected, and the call we do at intel_runtime_resume() 1610 * won't be able to restore them. Since PCI_D3hot matches the 1611 * actual specification and appears to be working, use it. 1612 */ 1613 intel_opregion_notify_adapter(dev_priv, PCI_D3hot); 1614 } else { 1615 /* 1616 * current versions of firmware which depend on this opregion 1617 * notification have repurposed the D1 definition to mean 1618 * "runtime suspended" vs. what you would normally expect (D3) 1619 * to distinguish it from notifications that might be sent via 1620 * the suspend path. 1621 */ 1622 intel_opregion_notify_adapter(dev_priv, PCI_D1); 1623 } 1624 1625 assert_forcewakes_inactive(&dev_priv->uncore); 1626 1627 if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) 1628 intel_hpd_poll_enable(dev_priv); 1629 1630 drm_dbg_kms(&dev_priv->drm, "Device suspended\n"); 1631 return 0; 1632 } 1633 1634 static int intel_runtime_resume(struct device *kdev) 1635 { 1636 struct drm_i915_private *dev_priv = kdev_to_i915(kdev); 1637 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; 1638 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 1639 int ret; 1640 1641 if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv))) 1642 return -ENODEV; 1643 1644 drm_dbg_kms(&dev_priv->drm, "Resuming device\n"); 1645 1646 drm_WARN_ON_ONCE(&dev_priv->drm, atomic_read(&rpm->wakeref_count)); 1647 disable_rpm_wakeref_asserts(rpm); 1648 1649 intel_opregion_notify_adapter(dev_priv, PCI_D0); 1650 rpm->suspended = false; 1651 pci_d3cold_enable(pdev); 1652 if (intel_uncore_unclaimed_mmio(&dev_priv->uncore)) 1653 drm_dbg(&dev_priv->drm, 1654 "Unclaimed access during suspend, bios?\n"); 1655 1656 intel_display_power_resume(dev_priv); 1657 1658 ret = vlv_resume_prepare(dev_priv, true); 1659 1660 intel_uncore_runtime_resume(&dev_priv->uncore); 1661 1662 intel_runtime_pm_enable_interrupts(dev_priv); 1663 1664 /* 1665 * No point of rolling back things in case of an error, as the best 1666 * we can do is to hope that things will still work (and disable RPM). 1667 */ 1668 intel_gt_runtime_resume(to_gt(dev_priv)); 1669 1670 /* 1671 * On VLV/CHV display interrupts are part of the display 1672 * power well, so hpd is reinitialized from there. For 1673 * everyone else do it here. 1674 */ 1675 if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) { 1676 intel_hpd_init(dev_priv); 1677 intel_hpd_poll_disable(dev_priv); 1678 } 1679 1680 intel_enable_ipc(dev_priv); 1681 1682 enable_rpm_wakeref_asserts(rpm); 1683 1684 if (ret) 1685 drm_err(&dev_priv->drm, 1686 "Runtime resume failed, disabling it (%d)\n", ret); 1687 else 1688 drm_dbg_kms(&dev_priv->drm, "Device resumed\n"); 1689 1690 return ret; 1691 } 1692 1693 const struct dev_pm_ops i915_pm_ops = { 1694 /* 1695 * S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND, 1696 * PMSG_RESUME] 1697 */ 1698 .prepare = i915_pm_prepare, 1699 .suspend = i915_pm_suspend, 1700 .suspend_late = i915_pm_suspend_late, 1701 .resume_early = i915_pm_resume_early, 1702 .resume = i915_pm_resume, 1703 1704 /* 1705 * S4 event handlers 1706 * @freeze, @freeze_late : called (1) before creating the 1707 * hibernation image [PMSG_FREEZE] and 1708 * (2) after rebooting, before restoring 1709 * the image [PMSG_QUIESCE] 1710 * @thaw, @thaw_early : called (1) after creating the hibernation 1711 * image, before writing it [PMSG_THAW] 1712 * and (2) after failing to create or 1713 * restore the image [PMSG_RECOVER] 1714 * @poweroff, @poweroff_late: called after writing the hibernation 1715 * image, before rebooting [PMSG_HIBERNATE] 1716 * @restore, @restore_early : called after rebooting and restoring the 1717 * hibernation image [PMSG_RESTORE] 1718 */ 1719 .freeze = i915_pm_freeze, 1720 .freeze_late = i915_pm_freeze_late, 1721 .thaw_early = i915_pm_thaw_early, 1722 .thaw = i915_pm_thaw, 1723 .poweroff = i915_pm_suspend, 1724 .poweroff_late = i915_pm_poweroff_late, 1725 .restore_early = i915_pm_restore_early, 1726 .restore = i915_pm_restore, 1727 1728 /* S0ix (via runtime suspend) event handlers */ 1729 .runtime_suspend = intel_runtime_suspend, 1730 .runtime_resume = intel_runtime_resume, 1731 }; 1732 1733 static const struct file_operations i915_driver_fops = { 1734 .owner = THIS_MODULE, 1735 .open = drm_open, 1736 .release = drm_release_noglobal, 1737 .unlocked_ioctl = drm_ioctl, 1738 .mmap = i915_gem_mmap, 1739 .poll = drm_poll, 1740 .read = drm_read, 1741 .compat_ioctl = i915_ioc32_compat_ioctl, 1742 .llseek = noop_llseek, 1743 }; 1744 1745 static int 1746 i915_gem_reject_pin_ioctl(struct drm_device *dev, void *data, 1747 struct drm_file *file) 1748 { 1749 return -ENODEV; 1750 } 1751 1752 static const struct drm_ioctl_desc i915_ioctls[] = { 1753 DRM_IOCTL_DEF_DRV(I915_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1754 DRM_IOCTL_DEF_DRV(I915_FLUSH, drm_noop, DRM_AUTH), 1755 DRM_IOCTL_DEF_DRV(I915_FLIP, drm_noop, DRM_AUTH), 1756 DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, drm_noop, DRM_AUTH), 1757 DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, drm_noop, DRM_AUTH), 1758 DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, drm_noop, DRM_AUTH), 1759 DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam_ioctl, DRM_RENDER_ALLOW), 1760 DRM_IOCTL_DEF_DRV(I915_SETPARAM, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1761 DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH), 1762 DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH), 1763 DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1764 DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, drm_noop, DRM_AUTH), 1765 DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1766 DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1767 DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, drm_noop, DRM_AUTH), 1768 DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, drm_noop, DRM_AUTH), 1769 DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1770 DRM_IOCTL_DEF_DRV(I915_GEM_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1771 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, drm_invalid_op, DRM_AUTH), 1772 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2_WR, i915_gem_execbuffer2_ioctl, DRM_RENDER_ALLOW), 1773 DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), 1774 DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), 1775 DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_RENDER_ALLOW), 1776 DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_RENDER_ALLOW), 1777 DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_RENDER_ALLOW), 1778 DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_RENDER_ALLOW), 1779 DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1780 DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1781 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_RENDER_ALLOW), 1782 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE_EXT, i915_gem_create_ext_ioctl, DRM_RENDER_ALLOW), 1783 DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_RENDER_ALLOW), 1784 DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_RENDER_ALLOW), 1785 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_RENDER_ALLOW), 1786 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_OFFSET, i915_gem_mmap_offset_ioctl, DRM_RENDER_ALLOW), 1787 DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_RENDER_ALLOW), 1788 DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_RENDER_ALLOW), 1789 DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling_ioctl, DRM_RENDER_ALLOW), 1790 DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling_ioctl, DRM_RENDER_ALLOW), 1791 DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_RENDER_ALLOW), 1792 DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id_ioctl, 0), 1793 DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_RENDER_ALLOW), 1794 DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image_ioctl, DRM_MASTER), 1795 DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs_ioctl, DRM_MASTER), 1796 DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey_ioctl, DRM_MASTER), 1797 DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER), 1798 DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_RENDER_ALLOW), 1799 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE_EXT, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW), 1800 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW), 1801 DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW), 1802 DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS, i915_gem_context_reset_stats_ioctl, DRM_RENDER_ALLOW), 1803 DRM_IOCTL_DEF_DRV(I915_GEM_USERPTR, i915_gem_userptr_ioctl, DRM_RENDER_ALLOW), 1804 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM, i915_gem_context_getparam_ioctl, DRM_RENDER_ALLOW), 1805 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM, i915_gem_context_setparam_ioctl, DRM_RENDER_ALLOW), 1806 DRM_IOCTL_DEF_DRV(I915_PERF_OPEN, i915_perf_open_ioctl, DRM_RENDER_ALLOW), 1807 DRM_IOCTL_DEF_DRV(I915_PERF_ADD_CONFIG, i915_perf_add_config_ioctl, DRM_RENDER_ALLOW), 1808 DRM_IOCTL_DEF_DRV(I915_PERF_REMOVE_CONFIG, i915_perf_remove_config_ioctl, DRM_RENDER_ALLOW), 1809 DRM_IOCTL_DEF_DRV(I915_QUERY, i915_query_ioctl, DRM_RENDER_ALLOW), 1810 DRM_IOCTL_DEF_DRV(I915_GEM_VM_CREATE, i915_gem_vm_create_ioctl, DRM_RENDER_ALLOW), 1811 DRM_IOCTL_DEF_DRV(I915_GEM_VM_DESTROY, i915_gem_vm_destroy_ioctl, DRM_RENDER_ALLOW), 1812 }; 1813 1814 /* 1815 * Interface history: 1816 * 1817 * 1.1: Original. 1818 * 1.2: Add Power Management 1819 * 1.3: Add vblank support 1820 * 1.4: Fix cmdbuffer path, add heap destroy 1821 * 1.5: Add vblank pipe configuration 1822 * 1.6: - New ioctl for scheduling buffer swaps on vertical blank 1823 * - Support vertical blank on secondary display pipe 1824 */ 1825 #define DRIVER_MAJOR 1 1826 #define DRIVER_MINOR 6 1827 #define DRIVER_PATCHLEVEL 0 1828 1829 static const struct drm_driver i915_drm_driver = { 1830 /* Don't use MTRRs here; the Xserver or userspace app should 1831 * deal with them for Intel hardware. 1832 */ 1833 .driver_features = 1834 DRIVER_GEM | 1835 DRIVER_RENDER | DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_SYNCOBJ | 1836 DRIVER_SYNCOBJ_TIMELINE, 1837 .release = i915_driver_release, 1838 .open = i915_driver_open, 1839 .lastclose = i915_driver_lastclose, 1840 .postclose = i915_driver_postclose, 1841 1842 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 1843 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 1844 .gem_prime_import = i915_gem_prime_import, 1845 1846 .dumb_create = i915_gem_dumb_create, 1847 .dumb_map_offset = i915_gem_dumb_mmap_offset, 1848 1849 .ioctls = i915_ioctls, 1850 .num_ioctls = ARRAY_SIZE(i915_ioctls), 1851 .fops = &i915_driver_fops, 1852 .name = DRIVER_NAME, 1853 .desc = DRIVER_DESC, 1854 .date = DRIVER_DATE, 1855 .major = DRIVER_MAJOR, 1856 .minor = DRIVER_MINOR, 1857 .patchlevel = DRIVER_PATCHLEVEL, 1858 }; 1859