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/string_helpers.h> 40 #include <linux/vga_switcheroo.h> 41 #include <linux/vt.h> 42 43 #include <drm/drm_aperture.h> 44 #include <drm/drm_atomic_helper.h> 45 #include <drm/drm_ioctl.h> 46 #include <drm/drm_managed.h> 47 #include <drm/drm_probe_helper.h> 48 49 #include "display/intel_acpi.h" 50 #include "display/intel_bw.h" 51 #include "display/intel_cdclk.h" 52 #include "display/intel_display_types.h" 53 #include "display/intel_dmc.h" 54 #include "display/intel_dp.h" 55 #include "display/intel_dpt.h" 56 #include "display/intel_fbdev.h" 57 #include "display/intel_hotplug.h" 58 #include "display/intel_overlay.h" 59 #include "display/intel_pch_refclk.h" 60 #include "display/intel_pipe_crc.h" 61 #include "display/intel_pps.h" 62 #include "display/intel_sprite.h" 63 #include "display/intel_vga.h" 64 65 #include "gem/i915_gem_context.h" 66 #include "gem/i915_gem_create.h" 67 #include "gem/i915_gem_dmabuf.h" 68 #include "gem/i915_gem_ioctls.h" 69 #include "gem/i915_gem_mman.h" 70 #include "gem/i915_gem_pm.h" 71 #include "gt/intel_gt.h" 72 #include "gt/intel_gt_pm.h" 73 #include "gt/intel_rc6.h" 74 75 #include "pxp/intel_pxp_pm.h" 76 77 #include "i915_file_private.h" 78 #include "i915_debugfs.h" 79 #include "i915_driver.h" 80 #include "i915_drm_client.h" 81 #include "i915_drv.h" 82 #include "i915_getparam.h" 83 #include "i915_ioc32.h" 84 #include "i915_ioctl.h" 85 #include "i915_irq.h" 86 #include "i915_memcpy.h" 87 #include "i915_perf.h" 88 #include "i915_query.h" 89 #include "i915_suspend.h" 90 #include "i915_switcheroo.h" 91 #include "i915_sysfs.h" 92 #include "i915_utils.h" 93 #include "i915_vgpu.h" 94 #include "intel_dram.h" 95 #include "intel_gvt.h" 96 #include "intel_memory_region.h" 97 #include "intel_pci_config.h" 98 #include "intel_pcode.h" 99 #include "intel_pm.h" 100 #include "intel_region_ttm.h" 101 #include "vlv_suspend.h" 102 103 static const struct drm_driver i915_drm_driver; 104 105 static int i915_get_bridge_dev(struct drm_i915_private *dev_priv) 106 { 107 int domain = pci_domain_nr(to_pci_dev(dev_priv->drm.dev)->bus); 108 109 dev_priv->bridge_dev = 110 pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(0, 0)); 111 if (!dev_priv->bridge_dev) { 112 drm_err(&dev_priv->drm, "bridge device not found\n"); 113 return -EIO; 114 } 115 return 0; 116 } 117 118 /* Allocate space for the MCH regs if needed, return nonzero on error */ 119 static int 120 intel_alloc_mchbar_resource(struct drm_i915_private *dev_priv) 121 { 122 int reg = GRAPHICS_VER(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915; 123 u32 temp_lo, temp_hi = 0; 124 u64 mchbar_addr; 125 int ret; 126 127 if (GRAPHICS_VER(dev_priv) >= 4) 128 pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi); 129 pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo); 130 mchbar_addr = ((u64)temp_hi << 32) | temp_lo; 131 132 /* If ACPI doesn't have it, assume we need to allocate it ourselves */ 133 #ifdef CONFIG_PNP 134 if (mchbar_addr && 135 pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE)) 136 return 0; 137 #endif 138 139 /* Get some space for it */ 140 dev_priv->mch_res.name = "i915 MCHBAR"; 141 dev_priv->mch_res.flags = IORESOURCE_MEM; 142 ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus, 143 &dev_priv->mch_res, 144 MCHBAR_SIZE, MCHBAR_SIZE, 145 PCIBIOS_MIN_MEM, 146 0, pcibios_align_resource, 147 dev_priv->bridge_dev); 148 if (ret) { 149 drm_dbg(&dev_priv->drm, "failed bus alloc: %d\n", ret); 150 dev_priv->mch_res.start = 0; 151 return ret; 152 } 153 154 if (GRAPHICS_VER(dev_priv) >= 4) 155 pci_write_config_dword(dev_priv->bridge_dev, reg + 4, 156 upper_32_bits(dev_priv->mch_res.start)); 157 158 pci_write_config_dword(dev_priv->bridge_dev, reg, 159 lower_32_bits(dev_priv->mch_res.start)); 160 return 0; 161 } 162 163 /* Setup MCHBAR if possible, return true if we should disable it again */ 164 static void 165 intel_setup_mchbar(struct drm_i915_private *dev_priv) 166 { 167 int mchbar_reg = GRAPHICS_VER(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915; 168 u32 temp; 169 bool enabled; 170 171 if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) 172 return; 173 174 dev_priv->mchbar_need_disable = false; 175 176 if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) { 177 pci_read_config_dword(dev_priv->bridge_dev, DEVEN, &temp); 178 enabled = !!(temp & DEVEN_MCHBAR_EN); 179 } else { 180 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); 181 enabled = temp & 1; 182 } 183 184 /* If it's already enabled, don't have to do anything */ 185 if (enabled) 186 return; 187 188 if (intel_alloc_mchbar_resource(dev_priv)) 189 return; 190 191 dev_priv->mchbar_need_disable = true; 192 193 /* Space is allocated or reserved, so enable it. */ 194 if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) { 195 pci_write_config_dword(dev_priv->bridge_dev, DEVEN, 196 temp | DEVEN_MCHBAR_EN); 197 } else { 198 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); 199 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1); 200 } 201 } 202 203 static void 204 intel_teardown_mchbar(struct drm_i915_private *dev_priv) 205 { 206 int mchbar_reg = GRAPHICS_VER(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915; 207 208 if (dev_priv->mchbar_need_disable) { 209 if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) { 210 u32 deven_val; 211 212 pci_read_config_dword(dev_priv->bridge_dev, DEVEN, 213 &deven_val); 214 deven_val &= ~DEVEN_MCHBAR_EN; 215 pci_write_config_dword(dev_priv->bridge_dev, DEVEN, 216 deven_val); 217 } else { 218 u32 mchbar_val; 219 220 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, 221 &mchbar_val); 222 mchbar_val &= ~1; 223 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, 224 mchbar_val); 225 } 226 } 227 228 if (dev_priv->mch_res.start) 229 release_resource(&dev_priv->mch_res); 230 } 231 232 static int i915_workqueues_init(struct drm_i915_private *dev_priv) 233 { 234 /* 235 * The i915 workqueue is primarily used for batched retirement of 236 * requests (and thus managing bo) once the task has been completed 237 * by the GPU. i915_retire_requests() is called directly when we 238 * need high-priority retirement, such as waiting for an explicit 239 * bo. 240 * 241 * It is also used for periodic low-priority events, such as 242 * idle-timers and recording error state. 243 * 244 * All tasks on the workqueue are expected to acquire the dev mutex 245 * so there is no point in running more than one instance of the 246 * workqueue at any time. Use an ordered one. 247 */ 248 dev_priv->wq = alloc_ordered_workqueue("i915", 0); 249 if (dev_priv->wq == NULL) 250 goto out_err; 251 252 dev_priv->hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0); 253 if (dev_priv->hotplug.dp_wq == NULL) 254 goto out_free_wq; 255 256 return 0; 257 258 out_free_wq: 259 destroy_workqueue(dev_priv->wq); 260 out_err: 261 drm_err(&dev_priv->drm, "Failed to allocate workqueues.\n"); 262 263 return -ENOMEM; 264 } 265 266 static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv) 267 { 268 destroy_workqueue(dev_priv->hotplug.dp_wq); 269 destroy_workqueue(dev_priv->wq); 270 } 271 272 /* 273 * We don't keep the workarounds for pre-production hardware, so we expect our 274 * driver to fail on these machines in one way or another. A little warning on 275 * dmesg may help both the user and the bug triagers. 276 * 277 * Our policy for removing pre-production workarounds is to keep the 278 * current gen workarounds as a guide to the bring-up of the next gen 279 * (workarounds have a habit of persisting!). Anything older than that 280 * should be removed along with the complications they introduce. 281 */ 282 static void intel_detect_preproduction_hw(struct drm_i915_private *dev_priv) 283 { 284 bool pre = false; 285 286 pre |= IS_HSW_EARLY_SDV(dev_priv); 287 pre |= IS_SKYLAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x6; 288 pre |= IS_BROXTON(dev_priv) && INTEL_REVID(dev_priv) < 0xA; 289 pre |= IS_KABYLAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x1; 290 pre |= IS_GEMINILAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x3; 291 pre |= IS_ICELAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x7; 292 293 if (pre) { 294 drm_err(&dev_priv->drm, "This is a pre-production stepping. " 295 "It may not be fully functional.\n"); 296 add_taint(TAINT_MACHINE_CHECK, LOCKDEP_STILL_OK); 297 } 298 } 299 300 static void sanitize_gpu(struct drm_i915_private *i915) 301 { 302 if (!INTEL_INFO(i915)->gpu_reset_clobbers_display) 303 __intel_gt_reset(to_gt(i915), ALL_ENGINES); 304 } 305 306 /** 307 * i915_driver_early_probe - setup state not requiring device access 308 * @dev_priv: device private 309 * 310 * Initialize everything that is a "SW-only" state, that is state not 311 * requiring accessing the device or exposing the driver via kernel internal 312 * or userspace interfaces. Example steps belonging here: lock initialization, 313 * system memory allocation, setting up device specific attributes and 314 * function hooks not requiring accessing the device. 315 */ 316 static int i915_driver_early_probe(struct drm_i915_private *dev_priv) 317 { 318 int ret = 0; 319 320 if (i915_inject_probe_failure(dev_priv)) 321 return -ENODEV; 322 323 intel_device_info_subplatform_init(dev_priv); 324 intel_step_init(dev_priv); 325 326 intel_uncore_mmio_debug_init_early(&dev_priv->mmio_debug); 327 328 spin_lock_init(&dev_priv->irq_lock); 329 spin_lock_init(&dev_priv->gpu_error.lock); 330 mutex_init(&dev_priv->backlight_lock); 331 332 mutex_init(&dev_priv->sb_lock); 333 cpu_latency_qos_add_request(&dev_priv->sb_qos, PM_QOS_DEFAULT_VALUE); 334 335 mutex_init(&dev_priv->audio.mutex); 336 mutex_init(&dev_priv->wm.wm_mutex); 337 mutex_init(&dev_priv->pps_mutex); 338 mutex_init(&dev_priv->hdcp_comp_mutex); 339 340 i915_memcpy_init_early(dev_priv); 341 intel_runtime_pm_init_early(&dev_priv->runtime_pm); 342 343 ret = i915_workqueues_init(dev_priv); 344 if (ret < 0) 345 return ret; 346 347 ret = vlv_suspend_init(dev_priv); 348 if (ret < 0) 349 goto err_workqueues; 350 351 ret = intel_region_ttm_device_init(dev_priv); 352 if (ret) 353 goto err_ttm; 354 355 intel_wopcm_init_early(&dev_priv->wopcm); 356 357 intel_root_gt_init_early(dev_priv); 358 359 i915_drm_clients_init(&dev_priv->clients, dev_priv); 360 361 i915_gem_init_early(dev_priv); 362 363 /* This must be called before any calls to HAS_PCH_* */ 364 intel_detect_pch(dev_priv); 365 366 intel_pm_setup(dev_priv); 367 ret = intel_power_domains_init(dev_priv); 368 if (ret < 0) 369 goto err_gem; 370 intel_irq_init(dev_priv); 371 intel_init_display_hooks(dev_priv); 372 intel_init_clock_gating_hooks(dev_priv); 373 374 intel_detect_preproduction_hw(dev_priv); 375 376 return 0; 377 378 err_gem: 379 i915_gem_cleanup_early(dev_priv); 380 intel_gt_driver_late_release_all(dev_priv); 381 i915_drm_clients_fini(&dev_priv->clients); 382 intel_region_ttm_device_fini(dev_priv); 383 err_ttm: 384 vlv_suspend_cleanup(dev_priv); 385 err_workqueues: 386 i915_workqueues_cleanup(dev_priv); 387 return ret; 388 } 389 390 /** 391 * i915_driver_late_release - cleanup the setup done in 392 * i915_driver_early_probe() 393 * @dev_priv: device private 394 */ 395 static void i915_driver_late_release(struct drm_i915_private *dev_priv) 396 { 397 intel_irq_fini(dev_priv); 398 intel_power_domains_cleanup(dev_priv); 399 i915_gem_cleanup_early(dev_priv); 400 intel_gt_driver_late_release_all(dev_priv); 401 i915_drm_clients_fini(&dev_priv->clients); 402 intel_region_ttm_device_fini(dev_priv); 403 vlv_suspend_cleanup(dev_priv); 404 i915_workqueues_cleanup(dev_priv); 405 406 cpu_latency_qos_remove_request(&dev_priv->sb_qos); 407 mutex_destroy(&dev_priv->sb_lock); 408 409 i915_params_free(&dev_priv->params); 410 } 411 412 /** 413 * i915_driver_mmio_probe - setup device MMIO 414 * @dev_priv: device private 415 * 416 * Setup minimal device state necessary for MMIO accesses later in the 417 * initialization sequence. The setup here should avoid any other device-wide 418 * side effects or exposing the driver via kernel internal or user space 419 * interfaces. 420 */ 421 static int i915_driver_mmio_probe(struct drm_i915_private *dev_priv) 422 { 423 int ret; 424 425 if (i915_inject_probe_failure(dev_priv)) 426 return -ENODEV; 427 428 ret = i915_get_bridge_dev(dev_priv); 429 if (ret < 0) 430 return ret; 431 432 ret = intel_uncore_init_mmio(&dev_priv->uncore); 433 if (ret) 434 return ret; 435 436 /* Try to make sure MCHBAR is enabled before poking at it */ 437 intel_setup_mchbar(dev_priv); 438 intel_device_info_runtime_init(dev_priv); 439 440 ret = intel_gt_init_mmio(to_gt(dev_priv)); 441 if (ret) 442 goto err_uncore; 443 444 /* As early as possible, scrub existing GPU state before clobbering */ 445 sanitize_gpu(dev_priv); 446 447 return 0; 448 449 err_uncore: 450 intel_teardown_mchbar(dev_priv); 451 intel_uncore_fini_mmio(&dev_priv->uncore); 452 pci_dev_put(dev_priv->bridge_dev); 453 454 return ret; 455 } 456 457 /** 458 * i915_driver_mmio_release - cleanup the setup done in i915_driver_mmio_probe() 459 * @dev_priv: device private 460 */ 461 static void i915_driver_mmio_release(struct drm_i915_private *dev_priv) 462 { 463 intel_teardown_mchbar(dev_priv); 464 intel_uncore_fini_mmio(&dev_priv->uncore); 465 pci_dev_put(dev_priv->bridge_dev); 466 } 467 468 /** 469 * i915_set_dma_info - set all relevant PCI dma info as configured for the 470 * platform 471 * @i915: valid i915 instance 472 * 473 * Set the dma max segment size, device and coherent masks. The dma mask set 474 * needs to occur before i915_ggtt_probe_hw. 475 * 476 * A couple of platforms have special needs. Address them as well. 477 * 478 */ 479 static int i915_set_dma_info(struct drm_i915_private *i915) 480 { 481 unsigned int mask_size = INTEL_INFO(i915)->dma_mask_size; 482 int ret; 483 484 GEM_BUG_ON(!mask_size); 485 486 /* 487 * We don't have a max segment size, so set it to the max so sg's 488 * debugging layer doesn't complain 489 */ 490 dma_set_max_seg_size(i915->drm.dev, UINT_MAX); 491 492 ret = dma_set_mask(i915->drm.dev, DMA_BIT_MASK(mask_size)); 493 if (ret) 494 goto mask_err; 495 496 /* overlay on gen2 is broken and can't address above 1G */ 497 if (GRAPHICS_VER(i915) == 2) 498 mask_size = 30; 499 500 /* 501 * 965GM sometimes incorrectly writes to hardware status page (HWS) 502 * using 32bit addressing, overwriting memory if HWS is located 503 * above 4GB. 504 * 505 * The documentation also mentions an issue with undefined 506 * behaviour if any general state is accessed within a page above 4GB, 507 * which also needs to be handled carefully. 508 */ 509 if (IS_I965G(i915) || IS_I965GM(i915)) 510 mask_size = 32; 511 512 ret = dma_set_coherent_mask(i915->drm.dev, DMA_BIT_MASK(mask_size)); 513 if (ret) 514 goto mask_err; 515 516 return 0; 517 518 mask_err: 519 drm_err(&i915->drm, "Can't set DMA mask/consistent mask (%d)\n", ret); 520 return ret; 521 } 522 523 /** 524 * i915_driver_hw_probe - setup state requiring device access 525 * @dev_priv: device private 526 * 527 * Setup state that requires accessing the device, but doesn't require 528 * exposing the driver via kernel internal or userspace interfaces. 529 */ 530 static int i915_driver_hw_probe(struct drm_i915_private *dev_priv) 531 { 532 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 533 int ret; 534 535 if (i915_inject_probe_failure(dev_priv)) 536 return -ENODEV; 537 538 if (HAS_PPGTT(dev_priv)) { 539 if (intel_vgpu_active(dev_priv) && 540 !intel_vgpu_has_full_ppgtt(dev_priv)) { 541 i915_report_error(dev_priv, 542 "incompatible vGPU found, support for isolated ppGTT required\n"); 543 return -ENXIO; 544 } 545 } 546 547 if (HAS_EXECLISTS(dev_priv)) { 548 /* 549 * Older GVT emulation depends upon intercepting CSB mmio, 550 * which we no longer use, preferring to use the HWSP cache 551 * instead. 552 */ 553 if (intel_vgpu_active(dev_priv) && 554 !intel_vgpu_has_hwsp_emulation(dev_priv)) { 555 i915_report_error(dev_priv, 556 "old vGPU host found, support for HWSP emulation required\n"); 557 return -ENXIO; 558 } 559 } 560 561 /* needs to be done before ggtt probe */ 562 intel_dram_edram_detect(dev_priv); 563 564 ret = i915_set_dma_info(dev_priv); 565 if (ret) 566 return ret; 567 568 i915_perf_init(dev_priv); 569 570 ret = intel_gt_assign_ggtt(to_gt(dev_priv)); 571 if (ret) 572 goto err_perf; 573 574 ret = i915_ggtt_probe_hw(dev_priv); 575 if (ret) 576 goto err_perf; 577 578 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, dev_priv->drm.driver); 579 if (ret) 580 goto err_ggtt; 581 582 ret = i915_ggtt_init_hw(dev_priv); 583 if (ret) 584 goto err_ggtt; 585 586 ret = intel_memory_regions_hw_probe(dev_priv); 587 if (ret) 588 goto err_ggtt; 589 590 ret = intel_gt_tiles_init(dev_priv); 591 if (ret) 592 goto err_mem_regions; 593 594 ret = i915_ggtt_enable_hw(dev_priv); 595 if (ret) { 596 drm_err(&dev_priv->drm, "failed to enable GGTT\n"); 597 goto err_mem_regions; 598 } 599 600 pci_set_master(pdev); 601 602 /* On the 945G/GM, the chipset reports the MSI capability on the 603 * integrated graphics even though the support isn't actually there 604 * according to the published specs. It doesn't appear to function 605 * correctly in testing on 945G. 606 * This may be a side effect of MSI having been made available for PEG 607 * and the registers being closely associated. 608 * 609 * According to chipset errata, on the 965GM, MSI interrupts may 610 * be lost or delayed, and was defeatured. MSI interrupts seem to 611 * get lost on g4x as well, and interrupt delivery seems to stay 612 * properly dead afterwards. So we'll just disable them for all 613 * pre-gen5 chipsets. 614 * 615 * dp aux and gmbus irq on gen4 seems to be able to generate legacy 616 * interrupts even when in MSI mode. This results in spurious 617 * interrupt warnings if the legacy irq no. is shared with another 618 * device. The kernel then disables that interrupt source and so 619 * prevents the other device from working properly. 620 */ 621 if (GRAPHICS_VER(dev_priv) >= 5) { 622 if (pci_enable_msi(pdev) < 0) 623 drm_dbg(&dev_priv->drm, "can't enable MSI"); 624 } 625 626 ret = intel_gvt_init(dev_priv); 627 if (ret) 628 goto err_msi; 629 630 intel_opregion_setup(dev_priv); 631 632 ret = intel_pcode_init(dev_priv); 633 if (ret) 634 goto err_msi; 635 636 /* 637 * Fill the dram structure to get the system dram info. This will be 638 * used for memory latency calculation. 639 */ 640 intel_dram_detect(dev_priv); 641 642 intel_bw_init_hw(dev_priv); 643 644 return 0; 645 646 err_msi: 647 if (pdev->msi_enabled) 648 pci_disable_msi(pdev); 649 err_mem_regions: 650 intel_memory_regions_driver_release(dev_priv); 651 err_ggtt: 652 i915_ggtt_driver_release(dev_priv); 653 i915_gem_drain_freed_objects(dev_priv); 654 i915_ggtt_driver_late_release(dev_priv); 655 err_perf: 656 i915_perf_fini(dev_priv); 657 return ret; 658 } 659 660 /** 661 * i915_driver_hw_remove - cleanup the setup done in i915_driver_hw_probe() 662 * @dev_priv: device private 663 */ 664 static void i915_driver_hw_remove(struct drm_i915_private *dev_priv) 665 { 666 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 667 668 i915_perf_fini(dev_priv); 669 670 if (pdev->msi_enabled) 671 pci_disable_msi(pdev); 672 } 673 674 /** 675 * i915_driver_register - register the driver with the rest of the system 676 * @dev_priv: device private 677 * 678 * Perform any steps necessary to make the driver available via kernel 679 * internal or userspace interfaces. 680 */ 681 static void i915_driver_register(struct drm_i915_private *dev_priv) 682 { 683 struct drm_device *dev = &dev_priv->drm; 684 685 i915_gem_driver_register(dev_priv); 686 i915_pmu_register(dev_priv); 687 688 intel_vgpu_register(dev_priv); 689 690 /* Reveal our presence to userspace */ 691 if (drm_dev_register(dev, 0)) { 692 drm_err(&dev_priv->drm, 693 "Failed to register driver for userspace access!\n"); 694 return; 695 } 696 697 i915_debugfs_register(dev_priv); 698 i915_setup_sysfs(dev_priv); 699 700 /* Depends on sysfs having been initialized */ 701 i915_perf_register(dev_priv); 702 703 intel_gt_driver_register(to_gt(dev_priv)); 704 705 intel_display_driver_register(dev_priv); 706 707 intel_power_domains_enable(dev_priv); 708 intel_runtime_pm_enable(&dev_priv->runtime_pm); 709 710 intel_register_dsm_handler(); 711 712 if (i915_switcheroo_register(dev_priv)) 713 drm_err(&dev_priv->drm, "Failed to register vga switcheroo!\n"); 714 } 715 716 /** 717 * i915_driver_unregister - cleanup the registration done in i915_driver_regiser() 718 * @dev_priv: device private 719 */ 720 static void i915_driver_unregister(struct drm_i915_private *dev_priv) 721 { 722 i915_switcheroo_unregister(dev_priv); 723 724 intel_unregister_dsm_handler(); 725 726 intel_runtime_pm_disable(&dev_priv->runtime_pm); 727 intel_power_domains_disable(dev_priv); 728 729 intel_display_driver_unregister(dev_priv); 730 731 intel_gt_driver_unregister(to_gt(dev_priv)); 732 733 i915_perf_unregister(dev_priv); 734 i915_pmu_unregister(dev_priv); 735 736 i915_teardown_sysfs(dev_priv); 737 drm_dev_unplug(&dev_priv->drm); 738 739 i915_gem_driver_unregister(dev_priv); 740 } 741 742 void 743 i915_print_iommu_status(struct drm_i915_private *i915, struct drm_printer *p) 744 { 745 drm_printf(p, "iommu: %s\n", 746 str_enabled_disabled(i915_vtd_active(i915))); 747 } 748 749 static void i915_welcome_messages(struct drm_i915_private *dev_priv) 750 { 751 if (drm_debug_enabled(DRM_UT_DRIVER)) { 752 struct drm_printer p = drm_debug_printer("i915 device info:"); 753 754 drm_printf(&p, "pciid=0x%04x rev=0x%02x platform=%s (subplatform=0x%x) gen=%i\n", 755 INTEL_DEVID(dev_priv), 756 INTEL_REVID(dev_priv), 757 intel_platform_name(INTEL_INFO(dev_priv)->platform), 758 intel_subplatform(RUNTIME_INFO(dev_priv), 759 INTEL_INFO(dev_priv)->platform), 760 GRAPHICS_VER(dev_priv)); 761 762 intel_device_info_print_static(INTEL_INFO(dev_priv), &p); 763 intel_device_info_print_runtime(RUNTIME_INFO(dev_priv), &p); 764 i915_print_iommu_status(dev_priv, &p); 765 intel_gt_info_print(&to_gt(dev_priv)->info, &p); 766 } 767 768 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG)) 769 drm_info(&dev_priv->drm, "DRM_I915_DEBUG enabled\n"); 770 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)) 771 drm_info(&dev_priv->drm, "DRM_I915_DEBUG_GEM enabled\n"); 772 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)) 773 drm_info(&dev_priv->drm, 774 "DRM_I915_DEBUG_RUNTIME_PM enabled\n"); 775 } 776 777 static struct drm_i915_private * 778 i915_driver_create(struct pci_dev *pdev, const struct pci_device_id *ent) 779 { 780 const struct intel_device_info *match_info = 781 (struct intel_device_info *)ent->driver_data; 782 struct intel_device_info *device_info; 783 struct drm_i915_private *i915; 784 785 i915 = devm_drm_dev_alloc(&pdev->dev, &i915_drm_driver, 786 struct drm_i915_private, drm); 787 if (IS_ERR(i915)) 788 return i915; 789 790 pci_set_drvdata(pdev, i915); 791 792 /* Device parameters start as a copy of module parameters. */ 793 i915_params_copy(&i915->params, &i915_modparams); 794 795 /* Setup the write-once "constant" device info */ 796 device_info = mkwrite_device_info(i915); 797 memcpy(device_info, match_info, sizeof(*device_info)); 798 RUNTIME_INFO(i915)->device_id = pdev->device; 799 800 return i915; 801 } 802 803 /** 804 * i915_driver_probe - setup chip and create an initial config 805 * @pdev: PCI device 806 * @ent: matching PCI ID entry 807 * 808 * The driver probe routine has to do several things: 809 * - drive output discovery via intel_modeset_init() 810 * - initialize the memory manager 811 * - allocate initial config memory 812 * - setup the DRM framebuffer with the allocated memory 813 */ 814 int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 815 { 816 const struct intel_device_info *match_info = 817 (struct intel_device_info *)ent->driver_data; 818 struct drm_i915_private *i915; 819 int ret; 820 821 i915 = i915_driver_create(pdev, ent); 822 if (IS_ERR(i915)) 823 return PTR_ERR(i915); 824 825 /* Disable nuclear pageflip by default on pre-ILK */ 826 if (!i915->params.nuclear_pageflip && match_info->graphics.ver < 5) 827 i915->drm.driver_features &= ~DRIVER_ATOMIC; 828 829 ret = pci_enable_device(pdev); 830 if (ret) 831 goto out_fini; 832 833 ret = i915_driver_early_probe(i915); 834 if (ret < 0) 835 goto out_pci_disable; 836 837 disable_rpm_wakeref_asserts(&i915->runtime_pm); 838 839 intel_vgpu_detect(i915); 840 841 ret = intel_gt_probe_all(i915); 842 if (ret < 0) 843 goto out_runtime_pm_put; 844 845 ret = i915_driver_mmio_probe(i915); 846 if (ret < 0) 847 goto out_tiles_cleanup; 848 849 ret = i915_driver_hw_probe(i915); 850 if (ret < 0) 851 goto out_cleanup_mmio; 852 853 ret = intel_modeset_init_noirq(i915); 854 if (ret < 0) 855 goto out_cleanup_hw; 856 857 ret = intel_irq_install(i915); 858 if (ret) 859 goto out_cleanup_modeset; 860 861 ret = intel_modeset_init_nogem(i915); 862 if (ret) 863 goto out_cleanup_irq; 864 865 ret = i915_gem_init(i915); 866 if (ret) 867 goto out_cleanup_modeset2; 868 869 ret = intel_modeset_init(i915); 870 if (ret) 871 goto out_cleanup_gem; 872 873 i915_driver_register(i915); 874 875 enable_rpm_wakeref_asserts(&i915->runtime_pm); 876 877 i915_welcome_messages(i915); 878 879 i915->do_release = true; 880 881 return 0; 882 883 out_cleanup_gem: 884 i915_gem_suspend(i915); 885 i915_gem_driver_remove(i915); 886 i915_gem_driver_release(i915); 887 out_cleanup_modeset2: 888 /* FIXME clean up the error path */ 889 intel_modeset_driver_remove(i915); 890 intel_irq_uninstall(i915); 891 intel_modeset_driver_remove_noirq(i915); 892 goto out_cleanup_modeset; 893 out_cleanup_irq: 894 intel_irq_uninstall(i915); 895 out_cleanup_modeset: 896 intel_modeset_driver_remove_nogem(i915); 897 out_cleanup_hw: 898 i915_driver_hw_remove(i915); 899 intel_memory_regions_driver_release(i915); 900 i915_ggtt_driver_release(i915); 901 i915_gem_drain_freed_objects(i915); 902 i915_ggtt_driver_late_release(i915); 903 out_cleanup_mmio: 904 i915_driver_mmio_release(i915); 905 out_tiles_cleanup: 906 intel_gt_release_all(i915); 907 out_runtime_pm_put: 908 enable_rpm_wakeref_asserts(&i915->runtime_pm); 909 i915_driver_late_release(i915); 910 out_pci_disable: 911 pci_disable_device(pdev); 912 out_fini: 913 i915_probe_error(i915, "Device initialization failed (%d)\n", ret); 914 return ret; 915 } 916 917 void i915_driver_remove(struct drm_i915_private *i915) 918 { 919 disable_rpm_wakeref_asserts(&i915->runtime_pm); 920 921 i915_driver_unregister(i915); 922 923 /* Flush any external code that still may be under the RCU lock */ 924 synchronize_rcu(); 925 926 i915_gem_suspend(i915); 927 928 intel_gvt_driver_remove(i915); 929 930 intel_modeset_driver_remove(i915); 931 932 intel_irq_uninstall(i915); 933 934 intel_modeset_driver_remove_noirq(i915); 935 936 i915_reset_error_state(i915); 937 i915_gem_driver_remove(i915); 938 939 intel_modeset_driver_remove_nogem(i915); 940 941 i915_driver_hw_remove(i915); 942 943 enable_rpm_wakeref_asserts(&i915->runtime_pm); 944 } 945 946 static void i915_driver_release(struct drm_device *dev) 947 { 948 struct drm_i915_private *dev_priv = to_i915(dev); 949 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; 950 951 if (!dev_priv->do_release) 952 return; 953 954 disable_rpm_wakeref_asserts(rpm); 955 956 i915_gem_driver_release(dev_priv); 957 958 intel_memory_regions_driver_release(dev_priv); 959 i915_ggtt_driver_release(dev_priv); 960 i915_gem_drain_freed_objects(dev_priv); 961 i915_ggtt_driver_late_release(dev_priv); 962 963 i915_driver_mmio_release(dev_priv); 964 965 enable_rpm_wakeref_asserts(rpm); 966 intel_runtime_pm_driver_release(rpm); 967 968 i915_driver_late_release(dev_priv); 969 } 970 971 static int i915_driver_open(struct drm_device *dev, struct drm_file *file) 972 { 973 struct drm_i915_private *i915 = to_i915(dev); 974 int ret; 975 976 ret = i915_gem_open(i915, file); 977 if (ret) 978 return ret; 979 980 return 0; 981 } 982 983 /** 984 * i915_driver_lastclose - clean up after all DRM clients have exited 985 * @dev: DRM device 986 * 987 * Take care of cleaning up after all DRM clients have exited. In the 988 * mode setting case, we want to restore the kernel's initial mode (just 989 * in case the last client left us in a bad state). 990 * 991 * Additionally, in the non-mode setting case, we'll tear down the GTT 992 * and DMA structures, since the kernel won't be using them, and clea 993 * up any GEM state. 994 */ 995 static void i915_driver_lastclose(struct drm_device *dev) 996 { 997 struct drm_i915_private *i915 = to_i915(dev); 998 999 intel_fbdev_restore_mode(dev); 1000 1001 if (HAS_DISPLAY(i915)) 1002 vga_switcheroo_process_delayed_switch(); 1003 } 1004 1005 static void i915_driver_postclose(struct drm_device *dev, struct drm_file *file) 1006 { 1007 struct drm_i915_file_private *file_priv = file->driver_priv; 1008 1009 i915_gem_context_close(file); 1010 i915_drm_client_put(file_priv->client); 1011 1012 kfree_rcu(file_priv, rcu); 1013 1014 /* Catch up with all the deferred frees from "this" client */ 1015 i915_gem_flush_free_objects(to_i915(dev)); 1016 } 1017 1018 static void intel_suspend_encoders(struct drm_i915_private *dev_priv) 1019 { 1020 struct drm_device *dev = &dev_priv->drm; 1021 struct intel_encoder *encoder; 1022 1023 if (!HAS_DISPLAY(dev_priv)) 1024 return; 1025 1026 drm_modeset_lock_all(dev); 1027 for_each_intel_encoder(dev, encoder) 1028 if (encoder->suspend) 1029 encoder->suspend(encoder); 1030 drm_modeset_unlock_all(dev); 1031 } 1032 1033 static void intel_shutdown_encoders(struct drm_i915_private *dev_priv) 1034 { 1035 struct drm_device *dev = &dev_priv->drm; 1036 struct intel_encoder *encoder; 1037 1038 if (!HAS_DISPLAY(dev_priv)) 1039 return; 1040 1041 drm_modeset_lock_all(dev); 1042 for_each_intel_encoder(dev, encoder) 1043 if (encoder->shutdown) 1044 encoder->shutdown(encoder); 1045 drm_modeset_unlock_all(dev); 1046 } 1047 1048 void i915_driver_shutdown(struct drm_i915_private *i915) 1049 { 1050 disable_rpm_wakeref_asserts(&i915->runtime_pm); 1051 intel_runtime_pm_disable(&i915->runtime_pm); 1052 intel_power_domains_disable(i915); 1053 1054 i915_gem_suspend(i915); 1055 1056 if (HAS_DISPLAY(i915)) { 1057 drm_kms_helper_poll_disable(&i915->drm); 1058 1059 drm_atomic_helper_shutdown(&i915->drm); 1060 } 1061 1062 intel_dp_mst_suspend(i915); 1063 1064 intel_runtime_pm_disable_interrupts(i915); 1065 intel_hpd_cancel_work(i915); 1066 1067 intel_suspend_encoders(i915); 1068 intel_shutdown_encoders(i915); 1069 1070 intel_dmc_ucode_suspend(i915); 1071 1072 /* 1073 * The only requirement is to reboot with display DC states disabled, 1074 * for now leaving all display power wells in the INIT power domain 1075 * enabled. 1076 * 1077 * TODO: 1078 * - unify the pci_driver::shutdown sequence here with the 1079 * pci_driver.driver.pm.poweroff,poweroff_late sequence. 1080 * - unify the driver remove and system/runtime suspend sequences with 1081 * the above unified shutdown/poweroff sequence. 1082 */ 1083 intel_power_domains_driver_remove(i915); 1084 enable_rpm_wakeref_asserts(&i915->runtime_pm); 1085 1086 intel_runtime_pm_driver_release(&i915->runtime_pm); 1087 } 1088 1089 static bool suspend_to_idle(struct drm_i915_private *dev_priv) 1090 { 1091 #if IS_ENABLED(CONFIG_ACPI_SLEEP) 1092 if (acpi_target_system_state() < ACPI_STATE_S3) 1093 return true; 1094 #endif 1095 return false; 1096 } 1097 1098 static int i915_drm_prepare(struct drm_device *dev) 1099 { 1100 struct drm_i915_private *i915 = to_i915(dev); 1101 1102 /* 1103 * NB intel_display_suspend() may issue new requests after we've 1104 * ostensibly marked the GPU as ready-to-sleep here. We need to 1105 * split out that work and pull it forward so that after point, 1106 * the GPU is not woken again. 1107 */ 1108 return i915_gem_backup_suspend(i915); 1109 } 1110 1111 static int i915_drm_suspend(struct drm_device *dev) 1112 { 1113 struct drm_i915_private *dev_priv = to_i915(dev); 1114 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 1115 pci_power_t opregion_target_state; 1116 1117 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm); 1118 1119 /* We do a lot of poking in a lot of registers, make sure they work 1120 * properly. */ 1121 intel_power_domains_disable(dev_priv); 1122 if (HAS_DISPLAY(dev_priv)) 1123 drm_kms_helper_poll_disable(dev); 1124 1125 pci_save_state(pdev); 1126 1127 intel_display_suspend(dev); 1128 1129 intel_dp_mst_suspend(dev_priv); 1130 1131 intel_runtime_pm_disable_interrupts(dev_priv); 1132 intel_hpd_cancel_work(dev_priv); 1133 1134 intel_suspend_encoders(dev_priv); 1135 1136 intel_suspend_hw(dev_priv); 1137 1138 /* Must be called before GGTT is suspended. */ 1139 intel_dpt_suspend(dev_priv); 1140 i915_ggtt_suspend(to_gt(dev_priv)->ggtt); 1141 1142 i915_save_display(dev_priv); 1143 1144 opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold; 1145 intel_opregion_suspend(dev_priv, opregion_target_state); 1146 1147 intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true); 1148 1149 dev_priv->suspend_count++; 1150 1151 intel_dmc_ucode_suspend(dev_priv); 1152 1153 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm); 1154 1155 return 0; 1156 } 1157 1158 static enum i915_drm_suspend_mode 1159 get_suspend_mode(struct drm_i915_private *dev_priv, bool hibernate) 1160 { 1161 if (hibernate) 1162 return I915_DRM_SUSPEND_HIBERNATE; 1163 1164 if (suspend_to_idle(dev_priv)) 1165 return I915_DRM_SUSPEND_IDLE; 1166 1167 return I915_DRM_SUSPEND_MEM; 1168 } 1169 1170 static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation) 1171 { 1172 struct drm_i915_private *dev_priv = to_i915(dev); 1173 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 1174 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; 1175 int ret; 1176 1177 disable_rpm_wakeref_asserts(rpm); 1178 1179 i915_gem_suspend_late(dev_priv); 1180 1181 intel_uncore_suspend(&dev_priv->uncore); 1182 1183 intel_power_domains_suspend(dev_priv, 1184 get_suspend_mode(dev_priv, hibernation)); 1185 1186 intel_display_power_suspend_late(dev_priv); 1187 1188 ret = vlv_suspend_complete(dev_priv); 1189 if (ret) { 1190 drm_err(&dev_priv->drm, "Suspend complete failed: %d\n", ret); 1191 intel_power_domains_resume(dev_priv); 1192 1193 goto out; 1194 } 1195 1196 /* 1197 * FIXME: Temporary hammer to avoid freezing the machine on our DGFX 1198 * This should be totally removed when we handle the pci states properly 1199 * on runtime PM and on s2idle cases. 1200 */ 1201 if (suspend_to_idle(dev_priv)) 1202 pci_d3cold_disable(pdev); 1203 1204 pci_disable_device(pdev); 1205 /* 1206 * During hibernation on some platforms the BIOS may try to access 1207 * the device even though it's already in D3 and hang the machine. So 1208 * leave the device in D0 on those platforms and hope the BIOS will 1209 * power down the device properly. The issue was seen on multiple old 1210 * GENs with different BIOS vendors, so having an explicit blacklist 1211 * is inpractical; apply the workaround on everything pre GEN6. The 1212 * platforms where the issue was seen: 1213 * Lenovo Thinkpad X301, X61s, X60, T60, X41 1214 * Fujitsu FSC S7110 1215 * Acer Aspire 1830T 1216 */ 1217 if (!(hibernation && GRAPHICS_VER(dev_priv) < 6)) 1218 pci_set_power_state(pdev, PCI_D3hot); 1219 1220 out: 1221 enable_rpm_wakeref_asserts(rpm); 1222 if (!dev_priv->uncore.user_forcewake_count) 1223 intel_runtime_pm_driver_release(rpm); 1224 1225 return ret; 1226 } 1227 1228 int i915_driver_suspend_switcheroo(struct drm_i915_private *i915, 1229 pm_message_t state) 1230 { 1231 int error; 1232 1233 if (drm_WARN_ON_ONCE(&i915->drm, state.event != PM_EVENT_SUSPEND && 1234 state.event != PM_EVENT_FREEZE)) 1235 return -EINVAL; 1236 1237 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1238 return 0; 1239 1240 error = i915_drm_suspend(&i915->drm); 1241 if (error) 1242 return error; 1243 1244 return i915_drm_suspend_late(&i915->drm, false); 1245 } 1246 1247 static int i915_drm_resume(struct drm_device *dev) 1248 { 1249 struct drm_i915_private *dev_priv = to_i915(dev); 1250 int ret; 1251 1252 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm); 1253 1254 ret = intel_pcode_init(dev_priv); 1255 if (ret) 1256 return ret; 1257 1258 sanitize_gpu(dev_priv); 1259 1260 ret = i915_ggtt_enable_hw(dev_priv); 1261 if (ret) 1262 drm_err(&dev_priv->drm, "failed to re-enable GGTT\n"); 1263 1264 i915_ggtt_resume(to_gt(dev_priv)->ggtt); 1265 /* Must be called after GGTT is resumed. */ 1266 intel_dpt_resume(dev_priv); 1267 1268 intel_dmc_ucode_resume(dev_priv); 1269 1270 i915_restore_display(dev_priv); 1271 intel_pps_unlock_regs_wa(dev_priv); 1272 1273 intel_init_pch_refclk(dev_priv); 1274 1275 /* 1276 * Interrupts have to be enabled before any batches are run. If not the 1277 * GPU will hang. i915_gem_init_hw() will initiate batches to 1278 * update/restore the context. 1279 * 1280 * drm_mode_config_reset() needs AUX interrupts. 1281 * 1282 * Modeset enabling in intel_modeset_init_hw() also needs working 1283 * interrupts. 1284 */ 1285 intel_runtime_pm_enable_interrupts(dev_priv); 1286 1287 if (HAS_DISPLAY(dev_priv)) 1288 drm_mode_config_reset(dev); 1289 1290 i915_gem_resume(dev_priv); 1291 1292 intel_modeset_init_hw(dev_priv); 1293 intel_init_clock_gating(dev_priv); 1294 intel_hpd_init(dev_priv); 1295 1296 /* MST sideband requires HPD interrupts enabled */ 1297 intel_dp_mst_resume(dev_priv); 1298 intel_display_resume(dev); 1299 1300 intel_hpd_poll_disable(dev_priv); 1301 if (HAS_DISPLAY(dev_priv)) 1302 drm_kms_helper_poll_enable(dev); 1303 1304 intel_opregion_resume(dev_priv); 1305 1306 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false); 1307 1308 intel_power_domains_enable(dev_priv); 1309 1310 intel_gvt_resume(dev_priv); 1311 1312 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm); 1313 1314 return 0; 1315 } 1316 1317 static int i915_drm_resume_early(struct drm_device *dev) 1318 { 1319 struct drm_i915_private *dev_priv = to_i915(dev); 1320 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 1321 int ret; 1322 1323 /* 1324 * We have a resume ordering issue with the snd-hda driver also 1325 * requiring our device to be power up. Due to the lack of a 1326 * parent/child relationship we currently solve this with an early 1327 * resume hook. 1328 * 1329 * FIXME: This should be solved with a special hdmi sink device or 1330 * similar so that power domains can be employed. 1331 */ 1332 1333 /* 1334 * Note that we need to set the power state explicitly, since we 1335 * powered off the device during freeze and the PCI core won't power 1336 * it back up for us during thaw. Powering off the device during 1337 * freeze is not a hard requirement though, and during the 1338 * suspend/resume phases the PCI core makes sure we get here with the 1339 * device powered on. So in case we change our freeze logic and keep 1340 * the device powered we can also remove the following set power state 1341 * call. 1342 */ 1343 ret = pci_set_power_state(pdev, PCI_D0); 1344 if (ret) { 1345 drm_err(&dev_priv->drm, 1346 "failed to set PCI D0 power state (%d)\n", ret); 1347 return ret; 1348 } 1349 1350 /* 1351 * Note that pci_enable_device() first enables any parent bridge 1352 * device and only then sets the power state for this device. The 1353 * bridge enabling is a nop though, since bridge devices are resumed 1354 * first. The order of enabling power and enabling the device is 1355 * imposed by the PCI core as described above, so here we preserve the 1356 * same order for the freeze/thaw phases. 1357 * 1358 * TODO: eventually we should remove pci_disable_device() / 1359 * pci_enable_enable_device() from suspend/resume. Due to how they 1360 * depend on the device enable refcount we can't anyway depend on them 1361 * disabling/enabling the device. 1362 */ 1363 if (pci_enable_device(pdev)) 1364 return -EIO; 1365 1366 pci_set_master(pdev); 1367 1368 pci_d3cold_enable(pdev); 1369 1370 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm); 1371 1372 ret = vlv_resume_prepare(dev_priv, false); 1373 if (ret) 1374 drm_err(&dev_priv->drm, 1375 "Resume prepare failed: %d, continuing anyway\n", ret); 1376 1377 intel_uncore_resume_early(&dev_priv->uncore); 1378 1379 intel_gt_check_and_clear_faults(to_gt(dev_priv)); 1380 1381 intel_display_power_resume_early(dev_priv); 1382 1383 intel_power_domains_resume(dev_priv); 1384 1385 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm); 1386 1387 return ret; 1388 } 1389 1390 int i915_driver_resume_switcheroo(struct drm_i915_private *i915) 1391 { 1392 int ret; 1393 1394 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1395 return 0; 1396 1397 ret = i915_drm_resume_early(&i915->drm); 1398 if (ret) 1399 return ret; 1400 1401 return i915_drm_resume(&i915->drm); 1402 } 1403 1404 static int i915_pm_prepare(struct device *kdev) 1405 { 1406 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1407 1408 if (!i915) { 1409 dev_err(kdev, "DRM not initialized, aborting suspend.\n"); 1410 return -ENODEV; 1411 } 1412 1413 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1414 return 0; 1415 1416 return i915_drm_prepare(&i915->drm); 1417 } 1418 1419 static int i915_pm_suspend(struct device *kdev) 1420 { 1421 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1422 1423 if (!i915) { 1424 dev_err(kdev, "DRM not initialized, aborting suspend.\n"); 1425 return -ENODEV; 1426 } 1427 1428 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1429 return 0; 1430 1431 return i915_drm_suspend(&i915->drm); 1432 } 1433 1434 static int i915_pm_suspend_late(struct device *kdev) 1435 { 1436 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1437 1438 /* 1439 * We have a suspend ordering issue with the snd-hda driver also 1440 * requiring our device to be power up. Due to the lack of a 1441 * parent/child relationship we currently solve this with an late 1442 * suspend hook. 1443 * 1444 * FIXME: This should be solved with a special hdmi sink device or 1445 * similar so that power domains can be employed. 1446 */ 1447 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1448 return 0; 1449 1450 return i915_drm_suspend_late(&i915->drm, false); 1451 } 1452 1453 static int i915_pm_poweroff_late(struct device *kdev) 1454 { 1455 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1456 1457 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1458 return 0; 1459 1460 return i915_drm_suspend_late(&i915->drm, true); 1461 } 1462 1463 static int i915_pm_resume_early(struct device *kdev) 1464 { 1465 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1466 1467 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1468 return 0; 1469 1470 return i915_drm_resume_early(&i915->drm); 1471 } 1472 1473 static int i915_pm_resume(struct device *kdev) 1474 { 1475 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1476 1477 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) 1478 return 0; 1479 1480 return i915_drm_resume(&i915->drm); 1481 } 1482 1483 /* freeze: before creating the hibernation_image */ 1484 static int i915_pm_freeze(struct device *kdev) 1485 { 1486 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1487 int ret; 1488 1489 if (i915->drm.switch_power_state != DRM_SWITCH_POWER_OFF) { 1490 ret = i915_drm_suspend(&i915->drm); 1491 if (ret) 1492 return ret; 1493 } 1494 1495 ret = i915_gem_freeze(i915); 1496 if (ret) 1497 return ret; 1498 1499 return 0; 1500 } 1501 1502 static int i915_pm_freeze_late(struct device *kdev) 1503 { 1504 struct drm_i915_private *i915 = kdev_to_i915(kdev); 1505 int ret; 1506 1507 if (i915->drm.switch_power_state != DRM_SWITCH_POWER_OFF) { 1508 ret = i915_drm_suspend_late(&i915->drm, true); 1509 if (ret) 1510 return ret; 1511 } 1512 1513 ret = i915_gem_freeze_late(i915); 1514 if (ret) 1515 return ret; 1516 1517 return 0; 1518 } 1519 1520 /* thaw: called after creating the hibernation image, but before turning off. */ 1521 static int i915_pm_thaw_early(struct device *kdev) 1522 { 1523 return i915_pm_resume_early(kdev); 1524 } 1525 1526 static int i915_pm_thaw(struct device *kdev) 1527 { 1528 return i915_pm_resume(kdev); 1529 } 1530 1531 /* restore: called after loading the hibernation image. */ 1532 static int i915_pm_restore_early(struct device *kdev) 1533 { 1534 return i915_pm_resume_early(kdev); 1535 } 1536 1537 static int i915_pm_restore(struct device *kdev) 1538 { 1539 return i915_pm_resume(kdev); 1540 } 1541 1542 static int intel_runtime_suspend(struct device *kdev) 1543 { 1544 struct drm_i915_private *dev_priv = kdev_to_i915(kdev); 1545 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; 1546 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 1547 int ret; 1548 1549 if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv))) 1550 return -ENODEV; 1551 1552 drm_dbg_kms(&dev_priv->drm, "Suspending device\n"); 1553 1554 disable_rpm_wakeref_asserts(rpm); 1555 1556 /* 1557 * We are safe here against re-faults, since the fault handler takes 1558 * an RPM reference. 1559 */ 1560 i915_gem_runtime_suspend(dev_priv); 1561 1562 intel_gt_runtime_suspend(to_gt(dev_priv)); 1563 1564 intel_runtime_pm_disable_interrupts(dev_priv); 1565 1566 intel_uncore_suspend(&dev_priv->uncore); 1567 1568 intel_display_power_suspend(dev_priv); 1569 1570 ret = vlv_suspend_complete(dev_priv); 1571 if (ret) { 1572 drm_err(&dev_priv->drm, 1573 "Runtime suspend failed, disabling it (%d)\n", ret); 1574 intel_uncore_runtime_resume(&dev_priv->uncore); 1575 1576 intel_runtime_pm_enable_interrupts(dev_priv); 1577 1578 intel_gt_runtime_resume(to_gt(dev_priv)); 1579 1580 enable_rpm_wakeref_asserts(rpm); 1581 1582 return ret; 1583 } 1584 1585 enable_rpm_wakeref_asserts(rpm); 1586 intel_runtime_pm_driver_release(rpm); 1587 1588 if (intel_uncore_arm_unclaimed_mmio_detection(&dev_priv->uncore)) 1589 drm_err(&dev_priv->drm, 1590 "Unclaimed access detected prior to suspending\n"); 1591 1592 /* 1593 * FIXME: Temporary hammer to avoid freezing the machine on our DGFX 1594 * This should be totally removed when we handle the pci states properly 1595 * on runtime PM and on s2idle cases. 1596 */ 1597 pci_d3cold_disable(pdev); 1598 rpm->suspended = true; 1599 1600 /* 1601 * FIXME: We really should find a document that references the arguments 1602 * used below! 1603 */ 1604 if (IS_BROADWELL(dev_priv)) { 1605 /* 1606 * On Broadwell, if we use PCI_D1 the PCH DDI ports will stop 1607 * being detected, and the call we do at intel_runtime_resume() 1608 * won't be able to restore them. Since PCI_D3hot matches the 1609 * actual specification and appears to be working, use it. 1610 */ 1611 intel_opregion_notify_adapter(dev_priv, PCI_D3hot); 1612 } else { 1613 /* 1614 * current versions of firmware which depend on this opregion 1615 * notification have repurposed the D1 definition to mean 1616 * "runtime suspended" vs. what you would normally expect (D3) 1617 * to distinguish it from notifications that might be sent via 1618 * the suspend path. 1619 */ 1620 intel_opregion_notify_adapter(dev_priv, PCI_D1); 1621 } 1622 1623 assert_forcewakes_inactive(&dev_priv->uncore); 1624 1625 if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) 1626 intel_hpd_poll_enable(dev_priv); 1627 1628 drm_dbg_kms(&dev_priv->drm, "Device suspended\n"); 1629 return 0; 1630 } 1631 1632 static int intel_runtime_resume(struct device *kdev) 1633 { 1634 struct drm_i915_private *dev_priv = kdev_to_i915(kdev); 1635 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; 1636 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 1637 int ret; 1638 1639 if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv))) 1640 return -ENODEV; 1641 1642 drm_dbg_kms(&dev_priv->drm, "Resuming device\n"); 1643 1644 drm_WARN_ON_ONCE(&dev_priv->drm, atomic_read(&rpm->wakeref_count)); 1645 disable_rpm_wakeref_asserts(rpm); 1646 1647 intel_opregion_notify_adapter(dev_priv, PCI_D0); 1648 rpm->suspended = false; 1649 pci_d3cold_enable(pdev); 1650 if (intel_uncore_unclaimed_mmio(&dev_priv->uncore)) 1651 drm_dbg(&dev_priv->drm, 1652 "Unclaimed access during suspend, bios?\n"); 1653 1654 intel_display_power_resume(dev_priv); 1655 1656 ret = vlv_resume_prepare(dev_priv, true); 1657 1658 intel_uncore_runtime_resume(&dev_priv->uncore); 1659 1660 intel_runtime_pm_enable_interrupts(dev_priv); 1661 1662 /* 1663 * No point of rolling back things in case of an error, as the best 1664 * we can do is to hope that things will still work (and disable RPM). 1665 */ 1666 intel_gt_runtime_resume(to_gt(dev_priv)); 1667 1668 /* 1669 * On VLV/CHV display interrupts are part of the display 1670 * power well, so hpd is reinitialized from there. For 1671 * everyone else do it here. 1672 */ 1673 if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) { 1674 intel_hpd_init(dev_priv); 1675 intel_hpd_poll_disable(dev_priv); 1676 } 1677 1678 intel_enable_ipc(dev_priv); 1679 1680 enable_rpm_wakeref_asserts(rpm); 1681 1682 if (ret) 1683 drm_err(&dev_priv->drm, 1684 "Runtime resume failed, disabling it (%d)\n", ret); 1685 else 1686 drm_dbg_kms(&dev_priv->drm, "Device resumed\n"); 1687 1688 return ret; 1689 } 1690 1691 const struct dev_pm_ops i915_pm_ops = { 1692 /* 1693 * S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND, 1694 * PMSG_RESUME] 1695 */ 1696 .prepare = i915_pm_prepare, 1697 .suspend = i915_pm_suspend, 1698 .suspend_late = i915_pm_suspend_late, 1699 .resume_early = i915_pm_resume_early, 1700 .resume = i915_pm_resume, 1701 1702 /* 1703 * S4 event handlers 1704 * @freeze, @freeze_late : called (1) before creating the 1705 * hibernation image [PMSG_FREEZE] and 1706 * (2) after rebooting, before restoring 1707 * the image [PMSG_QUIESCE] 1708 * @thaw, @thaw_early : called (1) after creating the hibernation 1709 * image, before writing it [PMSG_THAW] 1710 * and (2) after failing to create or 1711 * restore the image [PMSG_RECOVER] 1712 * @poweroff, @poweroff_late: called after writing the hibernation 1713 * image, before rebooting [PMSG_HIBERNATE] 1714 * @restore, @restore_early : called after rebooting and restoring the 1715 * hibernation image [PMSG_RESTORE] 1716 */ 1717 .freeze = i915_pm_freeze, 1718 .freeze_late = i915_pm_freeze_late, 1719 .thaw_early = i915_pm_thaw_early, 1720 .thaw = i915_pm_thaw, 1721 .poweroff = i915_pm_suspend, 1722 .poweroff_late = i915_pm_poweroff_late, 1723 .restore_early = i915_pm_restore_early, 1724 .restore = i915_pm_restore, 1725 1726 /* S0ix (via runtime suspend) event handlers */ 1727 .runtime_suspend = intel_runtime_suspend, 1728 .runtime_resume = intel_runtime_resume, 1729 }; 1730 1731 static const struct file_operations i915_driver_fops = { 1732 .owner = THIS_MODULE, 1733 .open = drm_open, 1734 .release = drm_release_noglobal, 1735 .unlocked_ioctl = drm_ioctl, 1736 .mmap = i915_gem_mmap, 1737 .poll = drm_poll, 1738 .read = drm_read, 1739 .compat_ioctl = i915_ioc32_compat_ioctl, 1740 .llseek = noop_llseek, 1741 #ifdef CONFIG_PROC_FS 1742 .show_fdinfo = i915_drm_client_fdinfo, 1743 #endif 1744 }; 1745 1746 static int 1747 i915_gem_reject_pin_ioctl(struct drm_device *dev, void *data, 1748 struct drm_file *file) 1749 { 1750 return -ENODEV; 1751 } 1752 1753 static const struct drm_ioctl_desc i915_ioctls[] = { 1754 DRM_IOCTL_DEF_DRV(I915_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1755 DRM_IOCTL_DEF_DRV(I915_FLUSH, drm_noop, DRM_AUTH), 1756 DRM_IOCTL_DEF_DRV(I915_FLIP, drm_noop, DRM_AUTH), 1757 DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, drm_noop, DRM_AUTH), 1758 DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, drm_noop, DRM_AUTH), 1759 DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, drm_noop, DRM_AUTH), 1760 DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam_ioctl, DRM_RENDER_ALLOW), 1761 DRM_IOCTL_DEF_DRV(I915_SETPARAM, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1762 DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH), 1763 DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH), 1764 DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1765 DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, drm_noop, DRM_AUTH), 1766 DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1767 DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1768 DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, drm_noop, DRM_AUTH), 1769 DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, drm_noop, DRM_AUTH), 1770 DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1771 DRM_IOCTL_DEF_DRV(I915_GEM_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1772 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, drm_invalid_op, DRM_AUTH), 1773 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2_WR, i915_gem_execbuffer2_ioctl, DRM_RENDER_ALLOW), 1774 DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), 1775 DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), 1776 DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_RENDER_ALLOW), 1777 DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_RENDER_ALLOW), 1778 DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_RENDER_ALLOW), 1779 DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_RENDER_ALLOW), 1780 DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1781 DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 1782 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_RENDER_ALLOW), 1783 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE_EXT, i915_gem_create_ext_ioctl, DRM_RENDER_ALLOW), 1784 DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_RENDER_ALLOW), 1785 DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_RENDER_ALLOW), 1786 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_RENDER_ALLOW), 1787 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_OFFSET, i915_gem_mmap_offset_ioctl, DRM_RENDER_ALLOW), 1788 DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_RENDER_ALLOW), 1789 DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_RENDER_ALLOW), 1790 DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling_ioctl, DRM_RENDER_ALLOW), 1791 DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling_ioctl, DRM_RENDER_ALLOW), 1792 DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_RENDER_ALLOW), 1793 DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id_ioctl, 0), 1794 DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_RENDER_ALLOW), 1795 DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image_ioctl, DRM_MASTER), 1796 DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs_ioctl, DRM_MASTER), 1797 DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey_ioctl, DRM_MASTER), 1798 DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER), 1799 DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_RENDER_ALLOW), 1800 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE_EXT, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW), 1801 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW), 1802 DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW), 1803 DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS, i915_gem_context_reset_stats_ioctl, DRM_RENDER_ALLOW), 1804 DRM_IOCTL_DEF_DRV(I915_GEM_USERPTR, i915_gem_userptr_ioctl, DRM_RENDER_ALLOW), 1805 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM, i915_gem_context_getparam_ioctl, DRM_RENDER_ALLOW), 1806 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM, i915_gem_context_setparam_ioctl, DRM_RENDER_ALLOW), 1807 DRM_IOCTL_DEF_DRV(I915_PERF_OPEN, i915_perf_open_ioctl, DRM_RENDER_ALLOW), 1808 DRM_IOCTL_DEF_DRV(I915_PERF_ADD_CONFIG, i915_perf_add_config_ioctl, DRM_RENDER_ALLOW), 1809 DRM_IOCTL_DEF_DRV(I915_PERF_REMOVE_CONFIG, i915_perf_remove_config_ioctl, DRM_RENDER_ALLOW), 1810 DRM_IOCTL_DEF_DRV(I915_QUERY, i915_query_ioctl, DRM_RENDER_ALLOW), 1811 DRM_IOCTL_DEF_DRV(I915_GEM_VM_CREATE, i915_gem_vm_create_ioctl, DRM_RENDER_ALLOW), 1812 DRM_IOCTL_DEF_DRV(I915_GEM_VM_DESTROY, i915_gem_vm_destroy_ioctl, DRM_RENDER_ALLOW), 1813 }; 1814 1815 /* 1816 * Interface history: 1817 * 1818 * 1.1: Original. 1819 * 1.2: Add Power Management 1820 * 1.3: Add vblank support 1821 * 1.4: Fix cmdbuffer path, add heap destroy 1822 * 1.5: Add vblank pipe configuration 1823 * 1.6: - New ioctl for scheduling buffer swaps on vertical blank 1824 * - Support vertical blank on secondary display pipe 1825 */ 1826 #define DRIVER_MAJOR 1 1827 #define DRIVER_MINOR 6 1828 #define DRIVER_PATCHLEVEL 0 1829 1830 static const struct drm_driver i915_drm_driver = { 1831 /* Don't use MTRRs here; the Xserver or userspace app should 1832 * deal with them for Intel hardware. 1833 */ 1834 .driver_features = 1835 DRIVER_GEM | 1836 DRIVER_RENDER | DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_SYNCOBJ | 1837 DRIVER_SYNCOBJ_TIMELINE, 1838 .release = i915_driver_release, 1839 .open = i915_driver_open, 1840 .lastclose = i915_driver_lastclose, 1841 .postclose = i915_driver_postclose, 1842 1843 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 1844 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 1845 .gem_prime_import = i915_gem_prime_import, 1846 1847 .dumb_create = i915_gem_dumb_create, 1848 .dumb_map_offset = i915_gem_dumb_mmap_offset, 1849 1850 .ioctls = i915_ioctls, 1851 .num_ioctls = ARRAY_SIZE(i915_ioctls), 1852 .fops = &i915_driver_fops, 1853 .name = DRIVER_NAME, 1854 .desc = DRIVER_DESC, 1855 .date = DRIVER_DATE, 1856 .major = DRIVER_MAJOR, 1857 .minor = DRIVER_MINOR, 1858 .patchlevel = DRIVER_PATCHLEVEL, 1859 }; 1860