1 /* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*-
5 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
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.
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>
36 #include <linux/pm_runtime.h>
37 #include <linux/slab.h>
38 #include <linux/string_helpers.h>
39 #include <linux/vga_switcheroo.h>
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>
48 #include "display/intel_acpi.h"
49 #include "display/intel_bw.h"
50 #include "display/intel_cdclk.h"
51 #include "display/intel_display_driver.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 #include "display/skl_watermark.h"
66 #include "gem/i915_gem_context.h"
67 #include "gem/i915_gem_create.h"
68 #include "gem/i915_gem_dmabuf.h"
69 #include "gem/i915_gem_ioctls.h"
70 #include "gem/i915_gem_mman.h"
71 #include "gem/i915_gem_pm.h"
72 #include "gt/intel_gt.h"
73 #include "gt/intel_gt_pm.h"
74 #include "gt/intel_gt_print.h"
75 #include "gt/intel_rc6.h"
77 #include "pxp/intel_pxp.h"
78 #include "pxp/intel_pxp_debugfs.h"
79 #include "pxp/intel_pxp_pm.h"
81 #include "soc/intel_dram.h"
82 #include "soc/intel_gmch.h"
84 #include "i915_debugfs.h"
85 #include "i915_driver.h"
86 #include "i915_drm_client.h"
88 #include "i915_file_private.h"
89 #include "i915_getparam.h"
90 #include "i915_hwmon.h"
91 #include "i915_ioc32.h"
92 #include "i915_ioctl.h"
94 #include "i915_memcpy.h"
95 #include "i915_perf.h"
96 #include "i915_query.h"
97 #include "i915_suspend.h"
98 #include "i915_switcheroo.h"
99 #include "i915_sysfs.h"
100 #include "i915_utils.h"
101 #include "i915_vgpu.h"
102 #include "intel_clock_gating.h"
103 #include "intel_gvt.h"
104 #include "intel_memory_region.h"
105 #include "intel_pci_config.h"
106 #include "intel_pcode.h"
107 #include "intel_region_ttm.h"
108 #include "vlv_suspend.h"
110 static const struct drm_driver i915_drm_driver;
112 static int i915_workqueues_init(struct drm_i915_private *dev_priv)
115 * The i915 workqueue is primarily used for batched retirement of
116 * requests (and thus managing bo) once the task has been completed
117 * by the GPU. i915_retire_requests() is called directly when we
118 * need high-priority retirement, such as waiting for an explicit
121 * It is also used for periodic low-priority events, such as
122 * idle-timers and recording error state.
124 * All tasks on the workqueue are expected to acquire the dev mutex
125 * so there is no point in running more than one instance of the
126 * workqueue at any time. Use an ordered one.
128 dev_priv->wq = alloc_ordered_workqueue("i915", 0);
129 if (dev_priv->wq == NULL)
132 dev_priv->display.hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0);
133 if (dev_priv->display.hotplug.dp_wq == NULL)
137 * The unordered i915 workqueue should be used for all work
138 * scheduling that do not require running in order, which used
139 * to be scheduled on the system_wq before moving to a driver
140 * instance due deprecation of flush_scheduled_work().
142 dev_priv->unordered_wq = alloc_workqueue("i915-unordered", 0, 0);
143 if (dev_priv->unordered_wq == NULL)
149 destroy_workqueue(dev_priv->display.hotplug.dp_wq);
151 destroy_workqueue(dev_priv->wq);
153 drm_err(&dev_priv->drm, "Failed to allocate workqueues.\n");
158 static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv)
160 destroy_workqueue(dev_priv->unordered_wq);
161 destroy_workqueue(dev_priv->display.hotplug.dp_wq);
162 destroy_workqueue(dev_priv->wq);
166 * We don't keep the workarounds for pre-production hardware, so we expect our
167 * driver to fail on these machines in one way or another. A little warning on
168 * dmesg may help both the user and the bug triagers.
170 * Our policy for removing pre-production workarounds is to keep the
171 * current gen workarounds as a guide to the bring-up of the next gen
172 * (workarounds have a habit of persisting!). Anything older than that
173 * should be removed along with the complications they introduce.
175 static void intel_detect_preproduction_hw(struct drm_i915_private *dev_priv)
179 pre |= IS_HASWELL_EARLY_SDV(dev_priv);
180 pre |= IS_SKYLAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x6;
181 pre |= IS_BROXTON(dev_priv) && INTEL_REVID(dev_priv) < 0xA;
182 pre |= IS_KABYLAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x1;
183 pre |= IS_GEMINILAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x3;
184 pre |= IS_ICELAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x7;
185 pre |= IS_TIGERLAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x1;
186 pre |= IS_DG1(dev_priv) && INTEL_REVID(dev_priv) < 0x1;
187 pre |= IS_DG2_G10(dev_priv) && INTEL_REVID(dev_priv) < 0x8;
188 pre |= IS_DG2_G11(dev_priv) && INTEL_REVID(dev_priv) < 0x5;
189 pre |= IS_DG2_G12(dev_priv) && INTEL_REVID(dev_priv) < 0x1;
192 drm_err(&dev_priv->drm, "This is a pre-production stepping. "
193 "It may not be fully functional.\n");
194 add_taint(TAINT_MACHINE_CHECK, LOCKDEP_STILL_OK);
198 static void sanitize_gpu(struct drm_i915_private *i915)
200 if (!INTEL_INFO(i915)->gpu_reset_clobbers_display) {
204 for_each_gt(gt, i915, i)
205 __intel_gt_reset(gt, ALL_ENGINES);
210 * i915_driver_early_probe - setup state not requiring device access
211 * @dev_priv: device private
213 * Initialize everything that is a "SW-only" state, that is state not
214 * requiring accessing the device or exposing the driver via kernel internal
215 * or userspace interfaces. Example steps belonging here: lock initialization,
216 * system memory allocation, setting up device specific attributes and
217 * function hooks not requiring accessing the device.
219 static int i915_driver_early_probe(struct drm_i915_private *dev_priv)
223 if (i915_inject_probe_failure(dev_priv))
226 intel_device_info_runtime_init_early(dev_priv);
228 intel_step_init(dev_priv);
230 intel_uncore_mmio_debug_init_early(dev_priv);
232 spin_lock_init(&dev_priv->irq_lock);
233 spin_lock_init(&dev_priv->gpu_error.lock);
235 mutex_init(&dev_priv->sb_lock);
236 cpu_latency_qos_add_request(&dev_priv->sb_qos, PM_QOS_DEFAULT_VALUE);
238 i915_memcpy_init_early(dev_priv);
239 intel_runtime_pm_init_early(&dev_priv->runtime_pm);
241 ret = i915_workqueues_init(dev_priv);
245 ret = vlv_suspend_init(dev_priv);
249 ret = intel_region_ttm_device_init(dev_priv);
253 ret = intel_root_gt_init_early(dev_priv);
257 i915_gem_init_early(dev_priv);
259 /* This must be called before any calls to HAS_PCH_* */
260 intel_detect_pch(dev_priv);
262 intel_irq_init(dev_priv);
263 intel_display_driver_early_probe(dev_priv);
264 intel_clock_gating_hooks_init(dev_priv);
266 intel_detect_preproduction_hw(dev_priv);
271 intel_region_ttm_device_fini(dev_priv);
273 vlv_suspend_cleanup(dev_priv);
275 i915_workqueues_cleanup(dev_priv);
280 * i915_driver_late_release - cleanup the setup done in
281 * i915_driver_early_probe()
282 * @dev_priv: device private
284 static void i915_driver_late_release(struct drm_i915_private *dev_priv)
286 intel_irq_fini(dev_priv);
287 intel_power_domains_cleanup(dev_priv);
288 i915_gem_cleanup_early(dev_priv);
289 intel_gt_driver_late_release_all(dev_priv);
290 intel_region_ttm_device_fini(dev_priv);
291 vlv_suspend_cleanup(dev_priv);
292 i915_workqueues_cleanup(dev_priv);
294 cpu_latency_qos_remove_request(&dev_priv->sb_qos);
295 mutex_destroy(&dev_priv->sb_lock);
297 i915_params_free(&dev_priv->params);
301 * i915_driver_mmio_probe - setup device MMIO
302 * @dev_priv: device private
304 * Setup minimal device state necessary for MMIO accesses later in the
305 * initialization sequence. The setup here should avoid any other device-wide
306 * side effects or exposing the driver via kernel internal or user space
309 static int i915_driver_mmio_probe(struct drm_i915_private *dev_priv)
314 if (i915_inject_probe_failure(dev_priv))
317 ret = intel_gmch_bridge_setup(dev_priv);
321 for_each_gt(gt, dev_priv, i) {
322 ret = intel_uncore_init_mmio(gt->uncore);
326 ret = drmm_add_action_or_reset(&dev_priv->drm,
327 intel_uncore_fini_mmio,
333 /* Try to make sure MCHBAR is enabled before poking at it */
334 intel_gmch_bar_setup(dev_priv);
335 intel_device_info_runtime_init(dev_priv);
336 intel_display_device_info_runtime_init(dev_priv);
338 for_each_gt(gt, dev_priv, i) {
339 ret = intel_gt_init_mmio(gt);
344 /* As early as possible, scrub existing GPU state before clobbering */
345 sanitize_gpu(dev_priv);
350 intel_gmch_bar_teardown(dev_priv);
356 * i915_driver_mmio_release - cleanup the setup done in i915_driver_mmio_probe()
357 * @dev_priv: device private
359 static void i915_driver_mmio_release(struct drm_i915_private *dev_priv)
361 intel_gmch_bar_teardown(dev_priv);
365 * i915_set_dma_info - set all relevant PCI dma info as configured for the
367 * @i915: valid i915 instance
369 * Set the dma max segment size, device and coherent masks. The dma mask set
370 * needs to occur before i915_ggtt_probe_hw.
372 * A couple of platforms have special needs. Address them as well.
375 static int i915_set_dma_info(struct drm_i915_private *i915)
377 unsigned int mask_size = INTEL_INFO(i915)->dma_mask_size;
380 GEM_BUG_ON(!mask_size);
383 * We don't have a max segment size, so set it to the max so sg's
384 * debugging layer doesn't complain
386 dma_set_max_seg_size(i915->drm.dev, UINT_MAX);
388 ret = dma_set_mask(i915->drm.dev, DMA_BIT_MASK(mask_size));
392 /* overlay on gen2 is broken and can't address above 1G */
393 if (GRAPHICS_VER(i915) == 2)
397 * 965GM sometimes incorrectly writes to hardware status page (HWS)
398 * using 32bit addressing, overwriting memory if HWS is located
401 * The documentation also mentions an issue with undefined
402 * behaviour if any general state is accessed within a page above 4GB,
403 * which also needs to be handled carefully.
405 if (IS_I965G(i915) || IS_I965GM(i915))
408 ret = dma_set_coherent_mask(i915->drm.dev, DMA_BIT_MASK(mask_size));
415 drm_err(&i915->drm, "Can't set DMA mask/consistent mask (%d)\n", ret);
419 static int i915_pcode_init(struct drm_i915_private *i915)
424 for_each_gt(gt, i915, id) {
425 ret = intel_pcode_init(gt->uncore);
427 gt_err(gt, "intel_pcode_init failed %d\n", ret);
436 * i915_driver_hw_probe - setup state requiring device access
437 * @dev_priv: device private
439 * Setup state that requires accessing the device, but doesn't require
440 * exposing the driver via kernel internal or userspace interfaces.
442 static int i915_driver_hw_probe(struct drm_i915_private *dev_priv)
444 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
447 if (i915_inject_probe_failure(dev_priv))
450 if (HAS_PPGTT(dev_priv)) {
451 if (intel_vgpu_active(dev_priv) &&
452 !intel_vgpu_has_full_ppgtt(dev_priv)) {
453 i915_report_error(dev_priv,
454 "incompatible vGPU found, support for isolated ppGTT required\n");
459 if (HAS_EXECLISTS(dev_priv)) {
461 * Older GVT emulation depends upon intercepting CSB mmio,
462 * which we no longer use, preferring to use the HWSP cache
465 if (intel_vgpu_active(dev_priv) &&
466 !intel_vgpu_has_hwsp_emulation(dev_priv)) {
467 i915_report_error(dev_priv,
468 "old vGPU host found, support for HWSP emulation required\n");
473 /* needs to be done before ggtt probe */
474 intel_dram_edram_detect(dev_priv);
476 ret = i915_set_dma_info(dev_priv);
480 ret = i915_perf_init(dev_priv);
484 ret = i915_ggtt_probe_hw(dev_priv);
488 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, dev_priv->drm.driver);
492 ret = i915_ggtt_init_hw(dev_priv);
497 * Make sure we probe lmem before we probe stolen-lmem. The BAR size
498 * might be different due to bar resizing.
500 ret = intel_gt_tiles_init(dev_priv);
504 ret = intel_memory_regions_hw_probe(dev_priv);
508 ret = i915_ggtt_enable_hw(dev_priv);
510 drm_err(&dev_priv->drm, "failed to enable GGTT\n");
511 goto err_mem_regions;
514 pci_set_master(pdev);
516 /* On the 945G/GM, the chipset reports the MSI capability on the
517 * integrated graphics even though the support isn't actually there
518 * according to the published specs. It doesn't appear to function
519 * correctly in testing on 945G.
520 * This may be a side effect of MSI having been made available for PEG
521 * and the registers being closely associated.
523 * According to chipset errata, on the 965GM, MSI interrupts may
524 * be lost or delayed, and was defeatured. MSI interrupts seem to
525 * get lost on g4x as well, and interrupt delivery seems to stay
526 * properly dead afterwards. So we'll just disable them for all
529 * dp aux and gmbus irq on gen4 seems to be able to generate legacy
530 * interrupts even when in MSI mode. This results in spurious
531 * interrupt warnings if the legacy irq no. is shared with another
532 * device. The kernel then disables that interrupt source and so
533 * prevents the other device from working properly.
535 if (GRAPHICS_VER(dev_priv) >= 5) {
536 if (pci_enable_msi(pdev) < 0)
537 drm_dbg(&dev_priv->drm, "can't enable MSI");
540 ret = intel_gvt_init(dev_priv);
544 intel_opregion_setup(dev_priv);
546 ret = i915_pcode_init(dev_priv);
551 * Fill the dram structure to get the system dram info. This will be
552 * used for memory latency calculation.
554 intel_dram_detect(dev_priv);
556 intel_bw_init_hw(dev_priv);
561 intel_opregion_cleanup(dev_priv);
563 if (pdev->msi_enabled)
564 pci_disable_msi(pdev);
566 intel_memory_regions_driver_release(dev_priv);
568 i915_ggtt_driver_release(dev_priv);
569 i915_gem_drain_freed_objects(dev_priv);
570 i915_ggtt_driver_late_release(dev_priv);
572 i915_perf_fini(dev_priv);
577 * i915_driver_hw_remove - cleanup the setup done in i915_driver_hw_probe()
578 * @dev_priv: device private
580 static void i915_driver_hw_remove(struct drm_i915_private *dev_priv)
582 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
584 i915_perf_fini(dev_priv);
586 intel_opregion_cleanup(dev_priv);
588 if (pdev->msi_enabled)
589 pci_disable_msi(pdev);
593 * i915_driver_register - register the driver with the rest of the system
594 * @dev_priv: device private
596 * Perform any steps necessary to make the driver available via kernel
597 * internal or userspace interfaces.
599 static void i915_driver_register(struct drm_i915_private *dev_priv)
604 i915_gem_driver_register(dev_priv);
605 i915_pmu_register(dev_priv);
607 intel_vgpu_register(dev_priv);
609 /* Reveal our presence to userspace */
610 if (drm_dev_register(&dev_priv->drm, 0)) {
611 drm_err(&dev_priv->drm,
612 "Failed to register driver for userspace access!\n");
616 i915_debugfs_register(dev_priv);
617 i915_setup_sysfs(dev_priv);
619 /* Depends on sysfs having been initialized */
620 i915_perf_register(dev_priv);
622 for_each_gt(gt, dev_priv, i)
623 intel_gt_driver_register(gt);
625 intel_pxp_debugfs_register(dev_priv->pxp);
627 i915_hwmon_register(dev_priv);
629 intel_display_driver_register(dev_priv);
631 intel_power_domains_enable(dev_priv);
632 intel_runtime_pm_enable(&dev_priv->runtime_pm);
634 intel_register_dsm_handler();
636 if (i915_switcheroo_register(dev_priv))
637 drm_err(&dev_priv->drm, "Failed to register vga switcheroo!\n");
641 * i915_driver_unregister - cleanup the registration done in i915_driver_regiser()
642 * @dev_priv: device private
644 static void i915_driver_unregister(struct drm_i915_private *dev_priv)
649 i915_switcheroo_unregister(dev_priv);
651 intel_unregister_dsm_handler();
653 intel_runtime_pm_disable(&dev_priv->runtime_pm);
654 intel_power_domains_disable(dev_priv);
656 intel_display_driver_unregister(dev_priv);
658 intel_pxp_fini(dev_priv);
660 for_each_gt(gt, dev_priv, i)
661 intel_gt_driver_unregister(gt);
663 i915_hwmon_unregister(dev_priv);
665 i915_perf_unregister(dev_priv);
666 i915_pmu_unregister(dev_priv);
668 i915_teardown_sysfs(dev_priv);
669 drm_dev_unplug(&dev_priv->drm);
671 i915_gem_driver_unregister(dev_priv);
675 i915_print_iommu_status(struct drm_i915_private *i915, struct drm_printer *p)
677 drm_printf(p, "iommu: %s\n",
678 str_enabled_disabled(i915_vtd_active(i915)));
681 static void i915_welcome_messages(struct drm_i915_private *dev_priv)
683 if (drm_debug_enabled(DRM_UT_DRIVER)) {
684 struct drm_printer p = drm_debug_printer("i915 device info:");
688 drm_printf(&p, "pciid=0x%04x rev=0x%02x platform=%s (subplatform=0x%x) gen=%i\n",
689 INTEL_DEVID(dev_priv),
690 INTEL_REVID(dev_priv),
691 intel_platform_name(INTEL_INFO(dev_priv)->platform),
692 intel_subplatform(RUNTIME_INFO(dev_priv),
693 INTEL_INFO(dev_priv)->platform),
694 GRAPHICS_VER(dev_priv));
696 intel_device_info_print(INTEL_INFO(dev_priv),
697 RUNTIME_INFO(dev_priv), &p);
698 i915_print_iommu_status(dev_priv, &p);
699 for_each_gt(gt, dev_priv, i)
700 intel_gt_info_print(>->info, &p);
703 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG))
704 drm_info(&dev_priv->drm, "DRM_I915_DEBUG enabled\n");
705 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM))
706 drm_info(&dev_priv->drm, "DRM_I915_DEBUG_GEM enabled\n");
707 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM))
708 drm_info(&dev_priv->drm,
709 "DRM_I915_DEBUG_RUNTIME_PM enabled\n");
712 static struct drm_i915_private *
713 i915_driver_create(struct pci_dev *pdev, const struct pci_device_id *ent)
715 const struct intel_device_info *match_info =
716 (struct intel_device_info *)ent->driver_data;
717 struct drm_i915_private *i915;
719 i915 = devm_drm_dev_alloc(&pdev->dev, &i915_drm_driver,
720 struct drm_i915_private, drm);
724 pci_set_drvdata(pdev, i915);
726 /* Device parameters start as a copy of module parameters. */
727 i915_params_copy(&i915->params, &i915_modparams);
729 /* Set up device info and initial runtime info. */
730 intel_device_info_driver_create(i915, pdev->device, match_info);
732 intel_display_device_probe(i915);
738 * i915_driver_probe - setup chip and create an initial config
740 * @ent: matching PCI ID entry
742 * The driver probe routine has to do several things:
743 * - drive output discovery via intel_display_driver_probe()
744 * - initialize the memory manager
745 * - allocate initial config memory
746 * - setup the DRM framebuffer with the allocated memory
748 int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
750 struct drm_i915_private *i915;
753 ret = pci_enable_device(pdev);
755 pr_err("Failed to enable graphics device: %pe\n", ERR_PTR(ret));
759 i915 = i915_driver_create(pdev, ent);
761 pci_disable_device(pdev);
762 return PTR_ERR(i915);
765 ret = i915_driver_early_probe(i915);
767 goto out_pci_disable;
769 disable_rpm_wakeref_asserts(&i915->runtime_pm);
771 intel_vgpu_detect(i915);
773 ret = intel_gt_probe_all(i915);
775 goto out_runtime_pm_put;
777 ret = i915_driver_mmio_probe(i915);
779 goto out_runtime_pm_put;
781 ret = i915_driver_hw_probe(i915);
783 goto out_cleanup_mmio;
785 ret = intel_display_driver_probe_noirq(i915);
789 ret = intel_irq_install(i915);
791 goto out_cleanup_modeset;
793 ret = intel_display_driver_probe_nogem(i915);
795 goto out_cleanup_irq;
797 ret = i915_gem_init(i915);
799 goto out_cleanup_modeset2;
801 ret = intel_pxp_init(i915);
803 drm_dbg(&i915->drm, "pxp init failed with %d\n", ret);
805 ret = intel_display_driver_probe(i915);
807 goto out_cleanup_gem;
809 i915_driver_register(i915);
811 enable_rpm_wakeref_asserts(&i915->runtime_pm);
813 i915_welcome_messages(i915);
815 i915->do_release = true;
820 i915_gem_suspend(i915);
821 i915_gem_driver_remove(i915);
822 i915_gem_driver_release(i915);
823 out_cleanup_modeset2:
824 /* FIXME clean up the error path */
825 intel_display_driver_remove(i915);
826 intel_irq_uninstall(i915);
827 intel_display_driver_remove_noirq(i915);
828 goto out_cleanup_modeset;
830 intel_irq_uninstall(i915);
832 intel_display_driver_remove_nogem(i915);
834 i915_driver_hw_remove(i915);
835 intel_memory_regions_driver_release(i915);
836 i915_ggtt_driver_release(i915);
837 i915_gem_drain_freed_objects(i915);
838 i915_ggtt_driver_late_release(i915);
840 i915_driver_mmio_release(i915);
842 enable_rpm_wakeref_asserts(&i915->runtime_pm);
843 i915_driver_late_release(i915);
845 pci_disable_device(pdev);
846 i915_probe_error(i915, "Device initialization failed (%d)\n", ret);
850 void i915_driver_remove(struct drm_i915_private *i915)
852 intel_wakeref_t wakeref;
854 wakeref = intel_runtime_pm_get(&i915->runtime_pm);
856 i915_driver_unregister(i915);
858 /* Flush any external code that still may be under the RCU lock */
861 i915_gem_suspend(i915);
863 intel_gvt_driver_remove(i915);
865 intel_display_driver_remove(i915);
867 intel_irq_uninstall(i915);
869 intel_display_driver_remove_noirq(i915);
871 i915_reset_error_state(i915);
872 i915_gem_driver_remove(i915);
874 intel_display_driver_remove_nogem(i915);
876 i915_driver_hw_remove(i915);
878 intel_runtime_pm_put(&i915->runtime_pm, wakeref);
881 static void i915_driver_release(struct drm_device *dev)
883 struct drm_i915_private *dev_priv = to_i915(dev);
884 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
885 intel_wakeref_t wakeref;
887 if (!dev_priv->do_release)
890 wakeref = intel_runtime_pm_get(rpm);
892 i915_gem_driver_release(dev_priv);
894 intel_memory_regions_driver_release(dev_priv);
895 i915_ggtt_driver_release(dev_priv);
896 i915_gem_drain_freed_objects(dev_priv);
897 i915_ggtt_driver_late_release(dev_priv);
899 i915_driver_mmio_release(dev_priv);
901 intel_runtime_pm_put(rpm, wakeref);
903 intel_runtime_pm_driver_release(rpm);
905 i915_driver_late_release(dev_priv);
907 intel_display_device_remove(dev_priv);
910 static int i915_driver_open(struct drm_device *dev, struct drm_file *file)
912 struct drm_i915_private *i915 = to_i915(dev);
915 ret = i915_gem_open(i915, file);
923 * i915_driver_lastclose - clean up after all DRM clients have exited
926 * Take care of cleaning up after all DRM clients have exited. In the
927 * mode setting case, we want to restore the kernel's initial mode (just
928 * in case the last client left us in a bad state).
930 * Additionally, in the non-mode setting case, we'll tear down the GTT
931 * and DMA structures, since the kernel won't be using them, and clea
934 static void i915_driver_lastclose(struct drm_device *dev)
936 struct drm_i915_private *i915 = to_i915(dev);
938 intel_fbdev_restore_mode(i915);
940 vga_switcheroo_process_delayed_switch();
943 static void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)
945 struct drm_i915_file_private *file_priv = file->driver_priv;
947 i915_gem_context_close(file);
948 i915_drm_client_put(file_priv->client);
950 kfree_rcu(file_priv, rcu);
952 /* Catch up with all the deferred frees from "this" client */
953 i915_gem_flush_free_objects(to_i915(dev));
956 static void intel_suspend_encoders(struct drm_i915_private *dev_priv)
958 struct intel_encoder *encoder;
960 if (!HAS_DISPLAY(dev_priv))
964 * TODO: check and remove holding the modeset locks if none of
965 * the encoders depends on this.
967 drm_modeset_lock_all(&dev_priv->drm);
968 for_each_intel_encoder(&dev_priv->drm, encoder)
969 if (encoder->suspend)
970 encoder->suspend(encoder);
971 drm_modeset_unlock_all(&dev_priv->drm);
973 for_each_intel_encoder(&dev_priv->drm, encoder)
974 if (encoder->suspend_complete)
975 encoder->suspend_complete(encoder);
978 static void intel_shutdown_encoders(struct drm_i915_private *dev_priv)
980 struct intel_encoder *encoder;
982 if (!HAS_DISPLAY(dev_priv))
986 * TODO: check and remove holding the modeset locks if none of
987 * the encoders depends on this.
989 drm_modeset_lock_all(&dev_priv->drm);
990 for_each_intel_encoder(&dev_priv->drm, encoder)
991 if (encoder->shutdown)
992 encoder->shutdown(encoder);
993 drm_modeset_unlock_all(&dev_priv->drm);
995 for_each_intel_encoder(&dev_priv->drm, encoder)
996 if (encoder->shutdown_complete)
997 encoder->shutdown_complete(encoder);
1000 void i915_driver_shutdown(struct drm_i915_private *i915)
1002 disable_rpm_wakeref_asserts(&i915->runtime_pm);
1003 intel_runtime_pm_disable(&i915->runtime_pm);
1004 intel_power_domains_disable(i915);
1006 intel_fbdev_set_suspend(&i915->drm, FBINFO_STATE_SUSPENDED, true);
1007 if (HAS_DISPLAY(i915)) {
1008 drm_kms_helper_poll_disable(&i915->drm);
1009 intel_display_driver_disable_user_access(i915);
1011 drm_atomic_helper_shutdown(&i915->drm);
1014 intel_dp_mst_suspend(i915);
1016 intel_runtime_pm_disable_interrupts(i915);
1017 intel_hpd_cancel_work(i915);
1019 if (HAS_DISPLAY(i915))
1020 intel_display_driver_suspend_access(i915);
1022 intel_suspend_encoders(i915);
1023 intel_shutdown_encoders(i915);
1025 intel_dmc_suspend(i915);
1027 i915_gem_suspend(i915);
1030 * The only requirement is to reboot with display DC states disabled,
1031 * for now leaving all display power wells in the INIT power domain
1035 * - unify the pci_driver::shutdown sequence here with the
1036 * pci_driver.driver.pm.poweroff,poweroff_late sequence.
1037 * - unify the driver remove and system/runtime suspend sequences with
1038 * the above unified shutdown/poweroff sequence.
1040 intel_power_domains_driver_remove(i915);
1041 enable_rpm_wakeref_asserts(&i915->runtime_pm);
1043 intel_runtime_pm_driver_last_release(&i915->runtime_pm);
1046 static bool suspend_to_idle(struct drm_i915_private *dev_priv)
1048 #if IS_ENABLED(CONFIG_ACPI_SLEEP)
1049 if (acpi_target_system_state() < ACPI_STATE_S3)
1055 static void i915_drm_complete(struct drm_device *dev)
1057 struct drm_i915_private *i915 = to_i915(dev);
1059 intel_pxp_resume_complete(i915->pxp);
1062 static int i915_drm_prepare(struct drm_device *dev)
1064 struct drm_i915_private *i915 = to_i915(dev);
1066 intel_pxp_suspend_prepare(i915->pxp);
1069 * NB intel_display_driver_suspend() may issue new requests after we've
1070 * ostensibly marked the GPU as ready-to-sleep here. We need to
1071 * split out that work and pull it forward so that after point,
1072 * the GPU is not woken again.
1074 return i915_gem_backup_suspend(i915);
1077 static int i915_drm_suspend(struct drm_device *dev)
1079 struct drm_i915_private *dev_priv = to_i915(dev);
1080 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
1081 pci_power_t opregion_target_state;
1083 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1085 /* We do a lot of poking in a lot of registers, make sure they work
1087 intel_power_domains_disable(dev_priv);
1088 intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true);
1089 if (HAS_DISPLAY(dev_priv)) {
1090 drm_kms_helper_poll_disable(dev);
1091 intel_display_driver_disable_user_access(dev_priv);
1094 pci_save_state(pdev);
1096 intel_display_driver_suspend(dev_priv);
1098 intel_dp_mst_suspend(dev_priv);
1100 intel_runtime_pm_disable_interrupts(dev_priv);
1101 intel_hpd_cancel_work(dev_priv);
1103 if (HAS_DISPLAY(dev_priv))
1104 intel_display_driver_suspend_access(dev_priv);
1106 intel_suspend_encoders(dev_priv);
1108 /* Must be called before GGTT is suspended. */
1109 intel_dpt_suspend(dev_priv);
1110 i915_ggtt_suspend(to_gt(dev_priv)->ggtt);
1112 i915_save_display(dev_priv);
1114 opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold;
1115 intel_opregion_suspend(dev_priv, opregion_target_state);
1117 dev_priv->suspend_count++;
1119 intel_dmc_suspend(dev_priv);
1121 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1123 i915_gem_drain_freed_objects(dev_priv);
1128 static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation)
1130 struct drm_i915_private *dev_priv = to_i915(dev);
1131 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
1132 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
1133 struct intel_gt *gt;
1135 bool s2idle = !hibernation && suspend_to_idle(dev_priv);
1137 disable_rpm_wakeref_asserts(rpm);
1139 intel_pxp_suspend(dev_priv->pxp);
1141 i915_gem_suspend_late(dev_priv);
1143 for_each_gt(gt, dev_priv, i)
1144 intel_uncore_suspend(gt->uncore);
1146 intel_power_domains_suspend(dev_priv, s2idle);
1148 intel_display_power_suspend_late(dev_priv);
1150 ret = vlv_suspend_complete(dev_priv);
1152 drm_err(&dev_priv->drm, "Suspend complete failed: %d\n", ret);
1153 intel_power_domains_resume(dev_priv);
1158 pci_disable_device(pdev);
1160 * During hibernation on some platforms the BIOS may try to access
1161 * the device even though it's already in D3 and hang the machine. So
1162 * leave the device in D0 on those platforms and hope the BIOS will
1163 * power down the device properly. The issue was seen on multiple old
1164 * GENs with different BIOS vendors, so having an explicit blacklist
1165 * is inpractical; apply the workaround on everything pre GEN6. The
1166 * platforms where the issue was seen:
1167 * Lenovo Thinkpad X301, X61s, X60, T60, X41
1171 if (!(hibernation && GRAPHICS_VER(dev_priv) < 6))
1172 pci_set_power_state(pdev, PCI_D3hot);
1175 enable_rpm_wakeref_asserts(rpm);
1176 if (!dev_priv->uncore.user_forcewake_count)
1177 intel_runtime_pm_driver_release(rpm);
1182 int i915_driver_suspend_switcheroo(struct drm_i915_private *i915,
1187 if (drm_WARN_ON_ONCE(&i915->drm, state.event != PM_EVENT_SUSPEND &&
1188 state.event != PM_EVENT_FREEZE))
1191 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1194 error = i915_drm_suspend(&i915->drm);
1198 return i915_drm_suspend_late(&i915->drm, false);
1201 static int i915_drm_resume(struct drm_device *dev)
1203 struct drm_i915_private *dev_priv = to_i915(dev);
1204 struct intel_gt *gt;
1207 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1209 ret = i915_pcode_init(dev_priv);
1213 sanitize_gpu(dev_priv);
1215 ret = i915_ggtt_enable_hw(dev_priv);
1217 drm_err(&dev_priv->drm, "failed to re-enable GGTT\n");
1219 i915_ggtt_resume(to_gt(dev_priv)->ggtt);
1221 for_each_gt(gt, dev_priv, i)
1222 if (GRAPHICS_VER(gt->i915) >= 8)
1223 setup_private_pat(gt);
1225 /* Must be called after GGTT is resumed. */
1226 intel_dpt_resume(dev_priv);
1228 intel_dmc_resume(dev_priv);
1230 i915_restore_display(dev_priv);
1231 intel_pps_unlock_regs_wa(dev_priv);
1233 intel_init_pch_refclk(dev_priv);
1236 * Interrupts have to be enabled before any batches are run. If not the
1237 * GPU will hang. i915_gem_init_hw() will initiate batches to
1238 * update/restore the context.
1240 * drm_mode_config_reset() needs AUX interrupts.
1242 * Modeset enabling in intel_display_driver_init_hw() also needs working
1245 intel_runtime_pm_enable_interrupts(dev_priv);
1247 if (HAS_DISPLAY(dev_priv))
1248 drm_mode_config_reset(dev);
1250 i915_gem_resume(dev_priv);
1252 intel_display_driver_init_hw(dev_priv);
1254 intel_clock_gating_init(dev_priv);
1256 if (HAS_DISPLAY(dev_priv))
1257 intel_display_driver_resume_access(dev_priv);
1259 intel_hpd_init(dev_priv);
1261 /* MST sideband requires HPD interrupts enabled */
1262 intel_dp_mst_resume(dev_priv);
1263 intel_display_driver_resume(dev_priv);
1265 if (HAS_DISPLAY(dev_priv)) {
1266 intel_display_driver_enable_user_access(dev_priv);
1267 drm_kms_helper_poll_enable(dev);
1269 intel_hpd_poll_disable(dev_priv);
1271 intel_opregion_resume(dev_priv);
1273 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false);
1275 intel_power_domains_enable(dev_priv);
1277 intel_gvt_resume(dev_priv);
1279 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1284 static int i915_drm_resume_early(struct drm_device *dev)
1286 struct drm_i915_private *dev_priv = to_i915(dev);
1287 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
1288 struct intel_gt *gt;
1292 * We have a resume ordering issue with the snd-hda driver also
1293 * requiring our device to be power up. Due to the lack of a
1294 * parent/child relationship we currently solve this with an early
1297 * FIXME: This should be solved with a special hdmi sink device or
1298 * similar so that power domains can be employed.
1302 * Note that we need to set the power state explicitly, since we
1303 * powered off the device during freeze and the PCI core won't power
1304 * it back up for us during thaw. Powering off the device during
1305 * freeze is not a hard requirement though, and during the
1306 * suspend/resume phases the PCI core makes sure we get here with the
1307 * device powered on. So in case we change our freeze logic and keep
1308 * the device powered we can also remove the following set power state
1311 ret = pci_set_power_state(pdev, PCI_D0);
1313 drm_err(&dev_priv->drm,
1314 "failed to set PCI D0 power state (%d)\n", ret);
1319 * Note that pci_enable_device() first enables any parent bridge
1320 * device and only then sets the power state for this device. The
1321 * bridge enabling is a nop though, since bridge devices are resumed
1322 * first. The order of enabling power and enabling the device is
1323 * imposed by the PCI core as described above, so here we preserve the
1324 * same order for the freeze/thaw phases.
1326 * TODO: eventually we should remove pci_disable_device() /
1327 * pci_enable_enable_device() from suspend/resume. Due to how they
1328 * depend on the device enable refcount we can't anyway depend on them
1329 * disabling/enabling the device.
1331 if (pci_enable_device(pdev))
1334 pci_set_master(pdev);
1336 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1338 ret = vlv_resume_prepare(dev_priv, false);
1340 drm_err(&dev_priv->drm,
1341 "Resume prepare failed: %d, continuing anyway\n", ret);
1343 for_each_gt(gt, dev_priv, i)
1344 intel_gt_resume_early(gt);
1346 intel_display_power_resume_early(dev_priv);
1348 intel_power_domains_resume(dev_priv);
1350 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1355 int i915_driver_resume_switcheroo(struct drm_i915_private *i915)
1359 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1362 ret = i915_drm_resume_early(&i915->drm);
1366 return i915_drm_resume(&i915->drm);
1369 static int i915_pm_prepare(struct device *kdev)
1371 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1374 dev_err(kdev, "DRM not initialized, aborting suspend.\n");
1378 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1381 return i915_drm_prepare(&i915->drm);
1384 static int i915_pm_suspend(struct device *kdev)
1386 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1389 dev_err(kdev, "DRM not initialized, aborting suspend.\n");
1393 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1396 return i915_drm_suspend(&i915->drm);
1399 static int i915_pm_suspend_late(struct device *kdev)
1401 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1404 * We have a suspend ordering issue with the snd-hda driver also
1405 * requiring our device to be power up. Due to the lack of a
1406 * parent/child relationship we currently solve this with an late
1409 * FIXME: This should be solved with a special hdmi sink device or
1410 * similar so that power domains can be employed.
1412 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1415 return i915_drm_suspend_late(&i915->drm, false);
1418 static int i915_pm_poweroff_late(struct device *kdev)
1420 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1422 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1425 return i915_drm_suspend_late(&i915->drm, true);
1428 static int i915_pm_resume_early(struct device *kdev)
1430 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1432 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1435 return i915_drm_resume_early(&i915->drm);
1438 static int i915_pm_resume(struct device *kdev)
1440 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1442 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1445 return i915_drm_resume(&i915->drm);
1448 static void i915_pm_complete(struct device *kdev)
1450 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1452 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1455 i915_drm_complete(&i915->drm);
1458 /* freeze: before creating the hibernation_image */
1459 static int i915_pm_freeze(struct device *kdev)
1461 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1464 if (i915->drm.switch_power_state != DRM_SWITCH_POWER_OFF) {
1465 ret = i915_drm_suspend(&i915->drm);
1470 ret = i915_gem_freeze(i915);
1477 static int i915_pm_freeze_late(struct device *kdev)
1479 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1482 if (i915->drm.switch_power_state != DRM_SWITCH_POWER_OFF) {
1483 ret = i915_drm_suspend_late(&i915->drm, true);
1488 ret = i915_gem_freeze_late(i915);
1495 /* thaw: called after creating the hibernation image, but before turning off. */
1496 static int i915_pm_thaw_early(struct device *kdev)
1498 return i915_pm_resume_early(kdev);
1501 static int i915_pm_thaw(struct device *kdev)
1503 return i915_pm_resume(kdev);
1506 /* restore: called after loading the hibernation image. */
1507 static int i915_pm_restore_early(struct device *kdev)
1509 return i915_pm_resume_early(kdev);
1512 static int i915_pm_restore(struct device *kdev)
1514 return i915_pm_resume(kdev);
1517 static int intel_runtime_suspend(struct device *kdev)
1519 struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
1520 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
1521 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
1522 struct pci_dev *root_pdev;
1523 struct intel_gt *gt;
1526 if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv)))
1529 drm_dbg(&dev_priv->drm, "Suspending device\n");
1531 disable_rpm_wakeref_asserts(rpm);
1534 * We are safe here against re-faults, since the fault handler takes
1537 i915_gem_runtime_suspend(dev_priv);
1539 intel_pxp_runtime_suspend(dev_priv->pxp);
1541 for_each_gt(gt, dev_priv, i)
1542 intel_gt_runtime_suspend(gt);
1544 intel_runtime_pm_disable_interrupts(dev_priv);
1546 for_each_gt(gt, dev_priv, i)
1547 intel_uncore_suspend(gt->uncore);
1549 intel_display_power_suspend(dev_priv);
1551 ret = vlv_suspend_complete(dev_priv);
1553 drm_err(&dev_priv->drm,
1554 "Runtime suspend failed, disabling it (%d)\n", ret);
1555 intel_uncore_runtime_resume(&dev_priv->uncore);
1557 intel_runtime_pm_enable_interrupts(dev_priv);
1559 for_each_gt(gt, dev_priv, i)
1560 intel_gt_runtime_resume(gt);
1562 enable_rpm_wakeref_asserts(rpm);
1567 enable_rpm_wakeref_asserts(rpm);
1568 intel_runtime_pm_driver_release(rpm);
1570 if (intel_uncore_arm_unclaimed_mmio_detection(&dev_priv->uncore))
1571 drm_err(&dev_priv->drm,
1572 "Unclaimed access detected prior to suspending\n");
1575 * FIXME: Temporary hammer to avoid freezing the machine on our DGFX
1576 * This should be totally removed when we handle the pci states properly
1579 root_pdev = pcie_find_root_port(pdev);
1581 pci_d3cold_disable(root_pdev);
1584 * FIXME: We really should find a document that references the arguments
1587 if (IS_BROADWELL(dev_priv)) {
1589 * On Broadwell, if we use PCI_D1 the PCH DDI ports will stop
1590 * being detected, and the call we do at intel_runtime_resume()
1591 * won't be able to restore them. Since PCI_D3hot matches the
1592 * actual specification and appears to be working, use it.
1594 intel_opregion_notify_adapter(dev_priv, PCI_D3hot);
1597 * current versions of firmware which depend on this opregion
1598 * notification have repurposed the D1 definition to mean
1599 * "runtime suspended" vs. what you would normally expect (D3)
1600 * to distinguish it from notifications that might be sent via
1603 intel_opregion_notify_adapter(dev_priv, PCI_D1);
1606 assert_forcewakes_inactive(&dev_priv->uncore);
1608 if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
1609 intel_hpd_poll_enable(dev_priv);
1611 drm_dbg(&dev_priv->drm, "Device suspended\n");
1615 static int intel_runtime_resume(struct device *kdev)
1617 struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
1618 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
1619 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
1620 struct pci_dev *root_pdev;
1621 struct intel_gt *gt;
1624 if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv)))
1627 drm_dbg(&dev_priv->drm, "Resuming device\n");
1629 drm_WARN_ON_ONCE(&dev_priv->drm, atomic_read(&rpm->wakeref_count));
1630 disable_rpm_wakeref_asserts(rpm);
1632 intel_opregion_notify_adapter(dev_priv, PCI_D0);
1634 root_pdev = pcie_find_root_port(pdev);
1636 pci_d3cold_enable(root_pdev);
1638 if (intel_uncore_unclaimed_mmio(&dev_priv->uncore))
1639 drm_dbg(&dev_priv->drm,
1640 "Unclaimed access during suspend, bios?\n");
1642 intel_display_power_resume(dev_priv);
1644 ret = vlv_resume_prepare(dev_priv, true);
1646 for_each_gt(gt, dev_priv, i)
1647 intel_uncore_runtime_resume(gt->uncore);
1649 intel_runtime_pm_enable_interrupts(dev_priv);
1652 * No point of rolling back things in case of an error, as the best
1653 * we can do is to hope that things will still work (and disable RPM).
1655 for_each_gt(gt, dev_priv, i)
1656 intel_gt_runtime_resume(gt);
1658 intel_pxp_runtime_resume(dev_priv->pxp);
1661 * On VLV/CHV display interrupts are part of the display
1662 * power well, so hpd is reinitialized from there. For
1663 * everyone else do it here.
1665 if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) {
1666 intel_hpd_init(dev_priv);
1667 intel_hpd_poll_disable(dev_priv);
1670 skl_watermark_ipc_update(dev_priv);
1672 enable_rpm_wakeref_asserts(rpm);
1675 drm_err(&dev_priv->drm,
1676 "Runtime resume failed, disabling it (%d)\n", ret);
1678 drm_dbg(&dev_priv->drm, "Device resumed\n");
1683 const struct dev_pm_ops i915_pm_ops = {
1685 * S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND,
1688 .prepare = i915_pm_prepare,
1689 .suspend = i915_pm_suspend,
1690 .suspend_late = i915_pm_suspend_late,
1691 .resume_early = i915_pm_resume_early,
1692 .resume = i915_pm_resume,
1693 .complete = i915_pm_complete,
1697 * @freeze, @freeze_late : called (1) before creating the
1698 * hibernation image [PMSG_FREEZE] and
1699 * (2) after rebooting, before restoring
1700 * the image [PMSG_QUIESCE]
1701 * @thaw, @thaw_early : called (1) after creating the hibernation
1702 * image, before writing it [PMSG_THAW]
1703 * and (2) after failing to create or
1704 * restore the image [PMSG_RECOVER]
1705 * @poweroff, @poweroff_late: called after writing the hibernation
1706 * image, before rebooting [PMSG_HIBERNATE]
1707 * @restore, @restore_early : called after rebooting and restoring the
1708 * hibernation image [PMSG_RESTORE]
1710 .freeze = i915_pm_freeze,
1711 .freeze_late = i915_pm_freeze_late,
1712 .thaw_early = i915_pm_thaw_early,
1713 .thaw = i915_pm_thaw,
1714 .poweroff = i915_pm_suspend,
1715 .poweroff_late = i915_pm_poweroff_late,
1716 .restore_early = i915_pm_restore_early,
1717 .restore = i915_pm_restore,
1719 /* S0ix (via runtime suspend) event handlers */
1720 .runtime_suspend = intel_runtime_suspend,
1721 .runtime_resume = intel_runtime_resume,
1724 static const struct file_operations i915_driver_fops = {
1725 .owner = THIS_MODULE,
1727 .release = drm_release_noglobal,
1728 .unlocked_ioctl = drm_ioctl,
1729 .mmap = i915_gem_mmap,
1732 .compat_ioctl = i915_ioc32_compat_ioctl,
1733 .llseek = noop_llseek,
1734 #ifdef CONFIG_PROC_FS
1735 .show_fdinfo = drm_show_fdinfo,
1740 i915_gem_reject_pin_ioctl(struct drm_device *dev, void *data,
1741 struct drm_file *file)
1746 static const struct drm_ioctl_desc i915_ioctls[] = {
1747 DRM_IOCTL_DEF_DRV(I915_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1748 DRM_IOCTL_DEF_DRV(I915_FLUSH, drm_noop, DRM_AUTH),
1749 DRM_IOCTL_DEF_DRV(I915_FLIP, drm_noop, DRM_AUTH),
1750 DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, drm_noop, DRM_AUTH),
1751 DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, drm_noop, DRM_AUTH),
1752 DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, drm_noop, DRM_AUTH),
1753 DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam_ioctl, DRM_RENDER_ALLOW),
1754 DRM_IOCTL_DEF_DRV(I915_SETPARAM, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1755 DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH),
1756 DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH),
1757 DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1758 DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, drm_noop, DRM_AUTH),
1759 DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1760 DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1761 DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, drm_noop, DRM_AUTH),
1762 DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, drm_noop, DRM_AUTH),
1763 DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1764 DRM_IOCTL_DEF_DRV(I915_GEM_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1765 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, drm_invalid_op, DRM_AUTH),
1766 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2_WR, i915_gem_execbuffer2_ioctl, DRM_RENDER_ALLOW),
1767 DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
1768 DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
1769 DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_RENDER_ALLOW),
1770 DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_RENDER_ALLOW),
1771 DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_RENDER_ALLOW),
1772 DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_RENDER_ALLOW),
1773 DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1774 DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1775 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_RENDER_ALLOW),
1776 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE_EXT, i915_gem_create_ext_ioctl, DRM_RENDER_ALLOW),
1777 DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_RENDER_ALLOW),
1778 DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_RENDER_ALLOW),
1779 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_RENDER_ALLOW),
1780 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_OFFSET, i915_gem_mmap_offset_ioctl, DRM_RENDER_ALLOW),
1781 DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_RENDER_ALLOW),
1782 DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_RENDER_ALLOW),
1783 DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling_ioctl, DRM_RENDER_ALLOW),
1784 DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling_ioctl, DRM_RENDER_ALLOW),
1785 DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_RENDER_ALLOW),
1786 DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id_ioctl, 0),
1787 DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_RENDER_ALLOW),
1788 DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image_ioctl, DRM_MASTER),
1789 DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs_ioctl, DRM_MASTER),
1790 DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey_ioctl, DRM_MASTER),
1791 DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER),
1792 DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_RENDER_ALLOW),
1793 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE_EXT, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW),
1794 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW),
1795 DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW),
1796 DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS, i915_gem_context_reset_stats_ioctl, DRM_RENDER_ALLOW),
1797 DRM_IOCTL_DEF_DRV(I915_GEM_USERPTR, i915_gem_userptr_ioctl, DRM_RENDER_ALLOW),
1798 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM, i915_gem_context_getparam_ioctl, DRM_RENDER_ALLOW),
1799 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM, i915_gem_context_setparam_ioctl, DRM_RENDER_ALLOW),
1800 DRM_IOCTL_DEF_DRV(I915_PERF_OPEN, i915_perf_open_ioctl, DRM_RENDER_ALLOW),
1801 DRM_IOCTL_DEF_DRV(I915_PERF_ADD_CONFIG, i915_perf_add_config_ioctl, DRM_RENDER_ALLOW),
1802 DRM_IOCTL_DEF_DRV(I915_PERF_REMOVE_CONFIG, i915_perf_remove_config_ioctl, DRM_RENDER_ALLOW),
1803 DRM_IOCTL_DEF_DRV(I915_QUERY, i915_query_ioctl, DRM_RENDER_ALLOW),
1804 DRM_IOCTL_DEF_DRV(I915_GEM_VM_CREATE, i915_gem_vm_create_ioctl, DRM_RENDER_ALLOW),
1805 DRM_IOCTL_DEF_DRV(I915_GEM_VM_DESTROY, i915_gem_vm_destroy_ioctl, DRM_RENDER_ALLOW),
1809 * Interface history:
1812 * 1.2: Add Power Management
1813 * 1.3: Add vblank support
1814 * 1.4: Fix cmdbuffer path, add heap destroy
1815 * 1.5: Add vblank pipe configuration
1816 * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
1817 * - Support vertical blank on secondary display pipe
1819 #define DRIVER_MAJOR 1
1820 #define DRIVER_MINOR 6
1821 #define DRIVER_PATCHLEVEL 0
1823 static const struct drm_driver i915_drm_driver = {
1824 /* Don't use MTRRs here; the Xserver or userspace app should
1825 * deal with them for Intel hardware.
1829 DRIVER_RENDER | DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_SYNCOBJ |
1830 DRIVER_SYNCOBJ_TIMELINE,
1831 .release = i915_driver_release,
1832 .open = i915_driver_open,
1833 .lastclose = i915_driver_lastclose,
1834 .postclose = i915_driver_postclose,
1835 .show_fdinfo = PTR_IF(IS_ENABLED(CONFIG_PROC_FS), i915_drm_client_fdinfo),
1837 .gem_prime_import = i915_gem_prime_import,
1839 .dumb_create = i915_gem_dumb_create,
1840 .dumb_map_offset = i915_gem_dumb_mmap_offset,
1842 .ioctls = i915_ioctls,
1843 .num_ioctls = ARRAY_SIZE(i915_ioctls),
1844 .fops = &i915_driver_fops,
1845 .name = DRIVER_NAME,
1846 .desc = DRIVER_DESC,
1847 .date = DRIVER_DATE,
1848 .major = DRIVER_MAJOR,
1849 .minor = DRIVER_MINOR,
1850 .patchlevel = DRIVER_PATCHLEVEL,