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/oom.h>
33 #include <linux/module.h>
34 #include <linux/pci.h>
36 #include <linux/pm_runtime.h>
37 #include <linux/pnp.h>
38 #include <linux/slab.h>
39 #include <linux/vga_switcheroo.h>
41 #include <acpi/video.h>
43 #include <drm/drm_atomic_helper.h>
44 #include <drm/drm_ioctl.h>
45 #include <drm/drm_irq.h>
46 #include <drm/drm_managed.h>
47 #include <drm/drm_probe_helper.h>
49 #include "display/intel_acpi.h"
50 #include "display/intel_audio.h"
51 #include "display/intel_bw.h"
52 #include "display/intel_cdclk.h"
53 #include "display/intel_csr.h"
54 #include "display/intel_display_debugfs.h"
55 #include "display/intel_display_types.h"
56 #include "display/intel_dp.h"
57 #include "display/intel_fbdev.h"
58 #include "display/intel_hotplug.h"
59 #include "display/intel_overlay.h"
60 #include "display/intel_pipe_crc.h"
61 #include "display/intel_sprite.h"
62 #include "display/intel_vga.h"
64 #include "gem/i915_gem_context.h"
65 #include "gem/i915_gem_ioctls.h"
66 #include "gem/i915_gem_mman.h"
67 #include "gt/intel_gt.h"
68 #include "gt/intel_gt_pm.h"
69 #include "gt/intel_rc6.h"
71 #include "i915_debugfs.h"
73 #include "i915_ioc32.h"
75 #include "i915_memcpy.h"
76 #include "i915_perf.h"
77 #include "i915_query.h"
78 #include "i915_suspend.h"
79 #include "i915_switcheroo.h"
80 #include "i915_sysfs.h"
81 #include "i915_trace.h"
82 #include "i915_vgpu.h"
83 #include "intel_dram.h"
84 #include "intel_gvt.h"
85 #include "intel_memory_region.h"
87 #include "intel_sideband.h"
88 #include "vlv_suspend.h"
90 static const struct drm_driver driver;
92 static int i915_get_bridge_dev(struct drm_i915_private *dev_priv)
94 int domain = pci_domain_nr(dev_priv->drm.pdev->bus);
96 dev_priv->bridge_dev =
97 pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(0, 0));
98 if (!dev_priv->bridge_dev) {
99 drm_err(&dev_priv->drm, "bridge device not found\n");
105 /* Allocate space for the MCH regs if needed, return nonzero on error */
107 intel_alloc_mchbar_resource(struct drm_i915_private *dev_priv)
109 int reg = INTEL_GEN(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915;
110 u32 temp_lo, temp_hi = 0;
114 if (INTEL_GEN(dev_priv) >= 4)
115 pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
116 pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
117 mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
119 /* If ACPI doesn't have it, assume we need to allocate it ourselves */
122 pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE))
126 /* Get some space for it */
127 dev_priv->mch_res.name = "i915 MCHBAR";
128 dev_priv->mch_res.flags = IORESOURCE_MEM;
129 ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus,
131 MCHBAR_SIZE, MCHBAR_SIZE,
133 0, pcibios_align_resource,
134 dev_priv->bridge_dev);
136 drm_dbg(&dev_priv->drm, "failed bus alloc: %d\n", ret);
137 dev_priv->mch_res.start = 0;
141 if (INTEL_GEN(dev_priv) >= 4)
142 pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
143 upper_32_bits(dev_priv->mch_res.start));
145 pci_write_config_dword(dev_priv->bridge_dev, reg,
146 lower_32_bits(dev_priv->mch_res.start));
150 /* Setup MCHBAR if possible, return true if we should disable it again */
152 intel_setup_mchbar(struct drm_i915_private *dev_priv)
154 int mchbar_reg = INTEL_GEN(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915;
158 if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
161 dev_priv->mchbar_need_disable = false;
163 if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) {
164 pci_read_config_dword(dev_priv->bridge_dev, DEVEN, &temp);
165 enabled = !!(temp & DEVEN_MCHBAR_EN);
167 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
171 /* If it's already enabled, don't have to do anything */
175 if (intel_alloc_mchbar_resource(dev_priv))
178 dev_priv->mchbar_need_disable = true;
180 /* Space is allocated or reserved, so enable it. */
181 if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) {
182 pci_write_config_dword(dev_priv->bridge_dev, DEVEN,
183 temp | DEVEN_MCHBAR_EN);
185 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
186 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
191 intel_teardown_mchbar(struct drm_i915_private *dev_priv)
193 int mchbar_reg = INTEL_GEN(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915;
195 if (dev_priv->mchbar_need_disable) {
196 if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) {
199 pci_read_config_dword(dev_priv->bridge_dev, DEVEN,
201 deven_val &= ~DEVEN_MCHBAR_EN;
202 pci_write_config_dword(dev_priv->bridge_dev, DEVEN,
207 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg,
210 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg,
215 if (dev_priv->mch_res.start)
216 release_resource(&dev_priv->mch_res);
219 static int i915_workqueues_init(struct drm_i915_private *dev_priv)
222 * The i915 workqueue is primarily used for batched retirement of
223 * requests (and thus managing bo) once the task has been completed
224 * by the GPU. i915_retire_requests() is called directly when we
225 * need high-priority retirement, such as waiting for an explicit
228 * It is also used for periodic low-priority events, such as
229 * idle-timers and recording error state.
231 * All tasks on the workqueue are expected to acquire the dev mutex
232 * so there is no point in running more than one instance of the
233 * workqueue at any time. Use an ordered one.
235 dev_priv->wq = alloc_ordered_workqueue("i915", 0);
236 if (dev_priv->wq == NULL)
239 dev_priv->hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0);
240 if (dev_priv->hotplug.dp_wq == NULL)
246 destroy_workqueue(dev_priv->wq);
248 drm_err(&dev_priv->drm, "Failed to allocate workqueues.\n");
253 static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv)
255 destroy_workqueue(dev_priv->hotplug.dp_wq);
256 destroy_workqueue(dev_priv->wq);
260 * We don't keep the workarounds for pre-production hardware, so we expect our
261 * driver to fail on these machines in one way or another. A little warning on
262 * dmesg may help both the user and the bug triagers.
264 * Our policy for removing pre-production workarounds is to keep the
265 * current gen workarounds as a guide to the bring-up of the next gen
266 * (workarounds have a habit of persisting!). Anything older than that
267 * should be removed along with the complications they introduce.
269 static void intel_detect_preproduction_hw(struct drm_i915_private *dev_priv)
273 pre |= IS_HSW_EARLY_SDV(dev_priv);
274 pre |= IS_SKL_REVID(dev_priv, 0, SKL_REVID_F0);
275 pre |= IS_BXT_REVID(dev_priv, 0, BXT_REVID_B_LAST);
276 pre |= IS_KBL_GT_REVID(dev_priv, 0, KBL_REVID_A0);
277 pre |= IS_GLK_REVID(dev_priv, 0, GLK_REVID_A2);
280 drm_err(&dev_priv->drm, "This is a pre-production stepping. "
281 "It may not be fully functional.\n");
282 add_taint(TAINT_MACHINE_CHECK, LOCKDEP_STILL_OK);
286 static void sanitize_gpu(struct drm_i915_private *i915)
288 if (!INTEL_INFO(i915)->gpu_reset_clobbers_display)
289 __intel_gt_reset(&i915->gt, ALL_ENGINES);
293 * i915_driver_early_probe - setup state not requiring device access
294 * @dev_priv: device private
296 * Initialize everything that is a "SW-only" state, that is state not
297 * requiring accessing the device or exposing the driver via kernel internal
298 * or userspace interfaces. Example steps belonging here: lock initialization,
299 * system memory allocation, setting up device specific attributes and
300 * function hooks not requiring accessing the device.
302 static int i915_driver_early_probe(struct drm_i915_private *dev_priv)
306 if (i915_inject_probe_failure(dev_priv))
309 intel_device_info_subplatform_init(dev_priv);
311 intel_uncore_mmio_debug_init_early(&dev_priv->mmio_debug);
312 intel_uncore_init_early(&dev_priv->uncore, dev_priv);
314 spin_lock_init(&dev_priv->irq_lock);
315 spin_lock_init(&dev_priv->gpu_error.lock);
316 mutex_init(&dev_priv->backlight_lock);
318 mutex_init(&dev_priv->sb_lock);
319 cpu_latency_qos_add_request(&dev_priv->sb_qos, PM_QOS_DEFAULT_VALUE);
321 mutex_init(&dev_priv->av_mutex);
322 mutex_init(&dev_priv->wm.wm_mutex);
323 mutex_init(&dev_priv->pps_mutex);
324 mutex_init(&dev_priv->hdcp_comp_mutex);
326 i915_memcpy_init_early(dev_priv);
327 intel_runtime_pm_init_early(&dev_priv->runtime_pm);
329 ret = i915_workqueues_init(dev_priv);
333 ret = vlv_suspend_init(dev_priv);
337 intel_wopcm_init_early(&dev_priv->wopcm);
339 intel_gt_init_early(&dev_priv->gt, dev_priv);
341 i915_gem_init_early(dev_priv);
343 /* This must be called before any calls to HAS_PCH_* */
344 intel_detect_pch(dev_priv);
346 intel_pm_setup(dev_priv);
347 ret = intel_power_domains_init(dev_priv);
350 intel_irq_init(dev_priv);
351 intel_init_display_hooks(dev_priv);
352 intel_init_clock_gating_hooks(dev_priv);
353 intel_init_audio_hooks(dev_priv);
355 intel_detect_preproduction_hw(dev_priv);
360 i915_gem_cleanup_early(dev_priv);
361 intel_gt_driver_late_release(&dev_priv->gt);
362 vlv_suspend_cleanup(dev_priv);
364 i915_workqueues_cleanup(dev_priv);
369 * i915_driver_late_release - cleanup the setup done in
370 * i915_driver_early_probe()
371 * @dev_priv: device private
373 static void i915_driver_late_release(struct drm_i915_private *dev_priv)
375 intel_irq_fini(dev_priv);
376 intel_power_domains_cleanup(dev_priv);
377 i915_gem_cleanup_early(dev_priv);
378 intel_gt_driver_late_release(&dev_priv->gt);
379 vlv_suspend_cleanup(dev_priv);
380 i915_workqueues_cleanup(dev_priv);
382 cpu_latency_qos_remove_request(&dev_priv->sb_qos);
383 mutex_destroy(&dev_priv->sb_lock);
385 i915_params_free(&dev_priv->params);
389 * i915_driver_mmio_probe - setup device MMIO
390 * @dev_priv: device private
392 * Setup minimal device state necessary for MMIO accesses later in the
393 * initialization sequence. The setup here should avoid any other device-wide
394 * side effects or exposing the driver via kernel internal or user space
397 static int i915_driver_mmio_probe(struct drm_i915_private *dev_priv)
401 if (i915_inject_probe_failure(dev_priv))
404 if (i915_get_bridge_dev(dev_priv))
407 ret = intel_uncore_init_mmio(&dev_priv->uncore);
411 /* Try to make sure MCHBAR is enabled before poking at it */
412 intel_setup_mchbar(dev_priv);
414 ret = intel_gt_init_mmio(&dev_priv->gt);
418 /* As early as possible, scrub existing GPU state before clobbering */
419 sanitize_gpu(dev_priv);
424 intel_teardown_mchbar(dev_priv);
425 intel_uncore_fini_mmio(&dev_priv->uncore);
427 pci_dev_put(dev_priv->bridge_dev);
433 * i915_driver_mmio_release - cleanup the setup done in i915_driver_mmio_probe()
434 * @dev_priv: device private
436 static void i915_driver_mmio_release(struct drm_i915_private *dev_priv)
438 intel_teardown_mchbar(dev_priv);
439 intel_uncore_fini_mmio(&dev_priv->uncore);
440 pci_dev_put(dev_priv->bridge_dev);
443 static void intel_sanitize_options(struct drm_i915_private *dev_priv)
445 intel_gvt_sanitize_options(dev_priv);
449 * i915_set_dma_info - set all relevant PCI dma info as configured for the
451 * @i915: valid i915 instance
453 * Set the dma max segment size, device and coherent masks. The dma mask set
454 * needs to occur before i915_ggtt_probe_hw.
456 * A couple of platforms have special needs. Address them as well.
459 static int i915_set_dma_info(struct drm_i915_private *i915)
461 struct pci_dev *pdev = i915->drm.pdev;
462 unsigned int mask_size = INTEL_INFO(i915)->dma_mask_size;
465 GEM_BUG_ON(!mask_size);
468 * We don't have a max segment size, so set it to the max so sg's
469 * debugging layer doesn't complain
471 dma_set_max_seg_size(&pdev->dev, UINT_MAX);
473 ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(mask_size));
477 /* overlay on gen2 is broken and can't address above 1G */
482 * 965GM sometimes incorrectly writes to hardware status page (HWS)
483 * using 32bit addressing, overwriting memory if HWS is located
486 * The documentation also mentions an issue with undefined
487 * behaviour if any general state is accessed within a page above 4GB,
488 * which also needs to be handled carefully.
490 if (IS_I965G(i915) || IS_I965GM(i915))
493 ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(mask_size));
500 drm_err(&i915->drm, "Can't set DMA mask/consistent mask (%d)\n", ret);
505 * i915_driver_hw_probe - setup state requiring device access
506 * @dev_priv: device private
508 * Setup state that requires accessing the device, but doesn't require
509 * exposing the driver via kernel internal or userspace interfaces.
511 static int i915_driver_hw_probe(struct drm_i915_private *dev_priv)
513 struct pci_dev *pdev = dev_priv->drm.pdev;
516 if (i915_inject_probe_failure(dev_priv))
519 intel_device_info_runtime_init(dev_priv);
521 if (HAS_PPGTT(dev_priv)) {
522 if (intel_vgpu_active(dev_priv) &&
523 !intel_vgpu_has_full_ppgtt(dev_priv)) {
524 i915_report_error(dev_priv,
525 "incompatible vGPU found, support for isolated ppGTT required\n");
530 if (HAS_EXECLISTS(dev_priv)) {
532 * Older GVT emulation depends upon intercepting CSB mmio,
533 * which we no longer use, preferring to use the HWSP cache
536 if (intel_vgpu_active(dev_priv) &&
537 !intel_vgpu_has_hwsp_emulation(dev_priv)) {
538 i915_report_error(dev_priv,
539 "old vGPU host found, support for HWSP emulation required\n");
544 intel_sanitize_options(dev_priv);
546 /* needs to be done before ggtt probe */
547 intel_dram_edram_detect(dev_priv);
549 ret = i915_set_dma_info(dev_priv);
553 i915_perf_init(dev_priv);
555 ret = i915_ggtt_probe_hw(dev_priv);
559 ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "inteldrmfb");
563 ret = i915_ggtt_init_hw(dev_priv);
567 ret = intel_memory_regions_hw_probe(dev_priv);
571 intel_gt_init_hw_early(&dev_priv->gt, &dev_priv->ggtt);
573 ret = i915_ggtt_enable_hw(dev_priv);
575 drm_err(&dev_priv->drm, "failed to enable GGTT\n");
576 goto err_mem_regions;
579 pci_set_master(pdev);
581 cpu_latency_qos_add_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE);
583 intel_gt_init_workarounds(dev_priv);
585 /* On the 945G/GM, the chipset reports the MSI capability on the
586 * integrated graphics even though the support isn't actually there
587 * according to the published specs. It doesn't appear to function
588 * correctly in testing on 945G.
589 * This may be a side effect of MSI having been made available for PEG
590 * and the registers being closely associated.
592 * According to chipset errata, on the 965GM, MSI interrupts may
593 * be lost or delayed, and was defeatured. MSI interrupts seem to
594 * get lost on g4x as well, and interrupt delivery seems to stay
595 * properly dead afterwards. So we'll just disable them for all
598 * dp aux and gmbus irq on gen4 seems to be able to generate legacy
599 * interrupts even when in MSI mode. This results in spurious
600 * interrupt warnings if the legacy irq no. is shared with another
601 * device. The kernel then disables that interrupt source and so
602 * prevents the other device from working properly.
604 if (INTEL_GEN(dev_priv) >= 5) {
605 if (pci_enable_msi(pdev) < 0)
606 drm_dbg(&dev_priv->drm, "can't enable MSI");
609 ret = intel_gvt_init(dev_priv);
613 intel_opregion_setup(dev_priv);
615 * Fill the dram structure to get the system raw bandwidth and
616 * dram info. This will be used for memory latency calculation.
618 intel_dram_detect(dev_priv);
620 intel_pcode_init(dev_priv);
622 intel_bw_init_hw(dev_priv);
627 if (pdev->msi_enabled)
628 pci_disable_msi(pdev);
629 cpu_latency_qos_remove_request(&dev_priv->pm_qos);
631 intel_memory_regions_driver_release(dev_priv);
633 i915_ggtt_driver_release(dev_priv);
635 i915_perf_fini(dev_priv);
640 * i915_driver_hw_remove - cleanup the setup done in i915_driver_hw_probe()
641 * @dev_priv: device private
643 static void i915_driver_hw_remove(struct drm_i915_private *dev_priv)
645 struct pci_dev *pdev = dev_priv->drm.pdev;
647 i915_perf_fini(dev_priv);
649 if (pdev->msi_enabled)
650 pci_disable_msi(pdev);
652 cpu_latency_qos_remove_request(&dev_priv->pm_qos);
656 * i915_driver_register - register the driver with the rest of the system
657 * @dev_priv: device private
659 * Perform any steps necessary to make the driver available via kernel
660 * internal or userspace interfaces.
662 static void i915_driver_register(struct drm_i915_private *dev_priv)
664 struct drm_device *dev = &dev_priv->drm;
666 i915_gem_driver_register(dev_priv);
667 i915_pmu_register(dev_priv);
669 intel_vgpu_register(dev_priv);
671 /* Reveal our presence to userspace */
672 if (drm_dev_register(dev, 0) == 0) {
673 i915_debugfs_register(dev_priv);
674 if (HAS_DISPLAY(dev_priv))
675 intel_display_debugfs_register(dev_priv);
676 i915_setup_sysfs(dev_priv);
678 /* Depends on sysfs having been initialized */
679 i915_perf_register(dev_priv);
681 drm_err(&dev_priv->drm,
682 "Failed to register driver for userspace access!\n");
684 if (HAS_DISPLAY(dev_priv)) {
685 /* Must be done after probing outputs */
686 intel_opregion_register(dev_priv);
687 acpi_video_register();
690 intel_gt_driver_register(&dev_priv->gt);
692 intel_audio_init(dev_priv);
695 * Some ports require correctly set-up hpd registers for detection to
696 * work properly (leading to ghost connected connector status), e.g. VGA
697 * on gm45. Hence we can only set up the initial fbdev config after hpd
698 * irqs are fully enabled. We do it last so that the async config
699 * cannot run before the connectors are registered.
701 intel_fbdev_initial_config_async(dev);
704 * We need to coordinate the hotplugs with the asynchronous fbdev
705 * configuration, for which we use the fbdev->async_cookie.
707 if (HAS_DISPLAY(dev_priv))
708 drm_kms_helper_poll_init(dev);
710 intel_power_domains_enable(dev_priv);
711 intel_runtime_pm_enable(&dev_priv->runtime_pm);
713 intel_register_dsm_handler();
715 if (i915_switcheroo_register(dev_priv))
716 drm_err(&dev_priv->drm, "Failed to register vga switcheroo!\n");
720 * i915_driver_unregister - cleanup the registration done in i915_driver_regiser()
721 * @dev_priv: device private
723 static void i915_driver_unregister(struct drm_i915_private *dev_priv)
725 i915_switcheroo_unregister(dev_priv);
727 intel_unregister_dsm_handler();
729 intel_runtime_pm_disable(&dev_priv->runtime_pm);
730 intel_power_domains_disable(dev_priv);
732 intel_fbdev_unregister(dev_priv);
733 intel_audio_deinit(dev_priv);
736 * After flushing the fbdev (incl. a late async config which will
737 * have delayed queuing of a hotplug event), then flush the hotplug
740 drm_kms_helper_poll_fini(&dev_priv->drm);
742 intel_gt_driver_unregister(&dev_priv->gt);
743 acpi_video_unregister();
744 intel_opregion_unregister(dev_priv);
746 i915_perf_unregister(dev_priv);
747 i915_pmu_unregister(dev_priv);
749 i915_teardown_sysfs(dev_priv);
750 drm_dev_unplug(&dev_priv->drm);
752 i915_gem_driver_unregister(dev_priv);
755 static void i915_welcome_messages(struct drm_i915_private *dev_priv)
757 if (drm_debug_enabled(DRM_UT_DRIVER)) {
758 struct drm_printer p = drm_debug_printer("i915 device info:");
760 drm_printf(&p, "pciid=0x%04x rev=0x%02x platform=%s (subplatform=0x%x) gen=%i\n",
761 INTEL_DEVID(dev_priv),
762 INTEL_REVID(dev_priv),
763 intel_platform_name(INTEL_INFO(dev_priv)->platform),
764 intel_subplatform(RUNTIME_INFO(dev_priv),
765 INTEL_INFO(dev_priv)->platform),
766 INTEL_GEN(dev_priv));
768 intel_device_info_print_static(INTEL_INFO(dev_priv), &p);
769 intel_device_info_print_runtime(RUNTIME_INFO(dev_priv), &p);
770 intel_gt_info_print(&dev_priv->gt.info, &p);
773 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG))
774 drm_info(&dev_priv->drm, "DRM_I915_DEBUG enabled\n");
775 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM))
776 drm_info(&dev_priv->drm, "DRM_I915_DEBUG_GEM enabled\n");
777 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM))
778 drm_info(&dev_priv->drm,
779 "DRM_I915_DEBUG_RUNTIME_PM enabled\n");
782 static struct drm_i915_private *
783 i915_driver_create(struct pci_dev *pdev, const struct pci_device_id *ent)
785 const struct intel_device_info *match_info =
786 (struct intel_device_info *)ent->driver_data;
787 struct intel_device_info *device_info;
788 struct drm_i915_private *i915;
790 i915 = devm_drm_dev_alloc(&pdev->dev, &driver,
791 struct drm_i915_private, drm);
795 i915->drm.pdev = pdev;
796 pci_set_drvdata(pdev, i915);
798 /* Device parameters start as a copy of module parameters. */
799 i915_params_copy(&i915->params, &i915_modparams);
801 /* Setup the write-once "constant" device info */
802 device_info = mkwrite_device_info(i915);
803 memcpy(device_info, match_info, sizeof(*device_info));
804 RUNTIME_INFO(i915)->device_id = pdev->device;
806 BUG_ON(device_info->gen > BITS_PER_TYPE(device_info->gen_mask));
812 * i915_driver_probe - setup chip and create an initial config
814 * @ent: matching PCI ID entry
816 * The driver probe routine has to do several things:
817 * - drive output discovery via intel_modeset_init()
818 * - initialize the memory manager
819 * - allocate initial config memory
820 * - setup the DRM framebuffer with the allocated memory
822 int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
824 const struct intel_device_info *match_info =
825 (struct intel_device_info *)ent->driver_data;
826 struct drm_i915_private *i915;
829 i915 = i915_driver_create(pdev, ent);
831 return PTR_ERR(i915);
833 /* Disable nuclear pageflip by default on pre-ILK */
834 if (!i915->params.nuclear_pageflip && match_info->gen < 5)
835 i915->drm.driver_features &= ~DRIVER_ATOMIC;
838 * Check if we support fake LMEM -- for now we only unleash this for
839 * the live selftests(test-and-exit).
841 #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
842 if (IS_ENABLED(CONFIG_DRM_I915_UNSTABLE_FAKE_LMEM)) {
843 if (INTEL_GEN(i915) >= 9 && i915_selftest.live < 0 &&
844 i915->params.fake_lmem_start) {
845 mkwrite_device_info(i915)->memory_regions =
846 REGION_SMEM | REGION_LMEM | REGION_STOLEN;
847 GEM_BUG_ON(!HAS_LMEM(i915));
852 ret = pci_enable_device(pdev);
856 ret = i915_driver_early_probe(i915);
858 goto out_pci_disable;
860 disable_rpm_wakeref_asserts(&i915->runtime_pm);
862 intel_vgpu_detect(i915);
864 ret = i915_driver_mmio_probe(i915);
866 goto out_runtime_pm_put;
868 ret = i915_driver_hw_probe(i915);
870 goto out_cleanup_mmio;
872 ret = intel_modeset_init_noirq(i915);
876 ret = intel_irq_install(i915);
878 goto out_cleanup_modeset;
880 ret = intel_modeset_init_nogem(i915);
882 goto out_cleanup_irq;
884 ret = i915_gem_init(i915);
886 goto out_cleanup_modeset2;
888 ret = intel_modeset_init(i915);
890 goto out_cleanup_gem;
892 i915_driver_register(i915);
894 enable_rpm_wakeref_asserts(&i915->runtime_pm);
896 i915_welcome_messages(i915);
898 i915->do_release = true;
903 i915_gem_suspend(i915);
904 i915_gem_driver_remove(i915);
905 i915_gem_driver_release(i915);
906 out_cleanup_modeset2:
907 /* FIXME clean up the error path */
908 intel_modeset_driver_remove(i915);
909 intel_irq_uninstall(i915);
910 intel_modeset_driver_remove_noirq(i915);
911 goto out_cleanup_modeset;
913 intel_irq_uninstall(i915);
915 intel_modeset_driver_remove_nogem(i915);
917 i915_driver_hw_remove(i915);
918 intel_memory_regions_driver_release(i915);
919 i915_ggtt_driver_release(i915);
921 i915_driver_mmio_release(i915);
923 enable_rpm_wakeref_asserts(&i915->runtime_pm);
924 i915_driver_late_release(i915);
926 pci_disable_device(pdev);
928 i915_probe_error(i915, "Device initialization failed (%d)\n", ret);
932 void i915_driver_remove(struct drm_i915_private *i915)
934 disable_rpm_wakeref_asserts(&i915->runtime_pm);
936 i915_driver_unregister(i915);
938 /* Flush any external code that still may be under the RCU lock */
941 i915_gem_suspend(i915);
943 drm_atomic_helper_shutdown(&i915->drm);
945 intel_gvt_driver_remove(i915);
947 intel_modeset_driver_remove(i915);
949 intel_irq_uninstall(i915);
951 intel_modeset_driver_remove_noirq(i915);
953 i915_reset_error_state(i915);
954 i915_gem_driver_remove(i915);
956 intel_modeset_driver_remove_nogem(i915);
958 i915_driver_hw_remove(i915);
960 enable_rpm_wakeref_asserts(&i915->runtime_pm);
963 static void i915_driver_release(struct drm_device *dev)
965 struct drm_i915_private *dev_priv = to_i915(dev);
966 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
968 if (!dev_priv->do_release)
971 disable_rpm_wakeref_asserts(rpm);
973 i915_gem_driver_release(dev_priv);
975 intel_memory_regions_driver_release(dev_priv);
976 i915_ggtt_driver_release(dev_priv);
977 i915_gem_drain_freed_objects(dev_priv);
979 i915_driver_mmio_release(dev_priv);
981 enable_rpm_wakeref_asserts(rpm);
982 intel_runtime_pm_driver_release(rpm);
984 i915_driver_late_release(dev_priv);
987 static int i915_driver_open(struct drm_device *dev, struct drm_file *file)
989 struct drm_i915_private *i915 = to_i915(dev);
992 ret = i915_gem_open(i915, file);
1000 * i915_driver_lastclose - clean up after all DRM clients have exited
1003 * Take care of cleaning up after all DRM clients have exited. In the
1004 * mode setting case, we want to restore the kernel's initial mode (just
1005 * in case the last client left us in a bad state).
1007 * Additionally, in the non-mode setting case, we'll tear down the GTT
1008 * and DMA structures, since the kernel won't be using them, and clea
1011 static void i915_driver_lastclose(struct drm_device *dev)
1013 intel_fbdev_restore_mode(dev);
1014 vga_switcheroo_process_delayed_switch();
1017 static void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)
1019 struct drm_i915_file_private *file_priv = file->driver_priv;
1021 i915_gem_context_close(file);
1023 kfree_rcu(file_priv, rcu);
1025 /* Catch up with all the deferred frees from "this" client */
1026 i915_gem_flush_free_objects(to_i915(dev));
1029 static void intel_suspend_encoders(struct drm_i915_private *dev_priv)
1031 struct drm_device *dev = &dev_priv->drm;
1032 struct intel_encoder *encoder;
1034 drm_modeset_lock_all(dev);
1035 for_each_intel_encoder(dev, encoder)
1036 if (encoder->suspend)
1037 encoder->suspend(encoder);
1038 drm_modeset_unlock_all(dev);
1041 static void intel_shutdown_encoders(struct drm_i915_private *dev_priv)
1043 struct drm_device *dev = &dev_priv->drm;
1044 struct intel_encoder *encoder;
1046 drm_modeset_lock_all(dev);
1047 for_each_intel_encoder(dev, encoder)
1048 if (encoder->shutdown)
1049 encoder->shutdown(encoder);
1050 drm_modeset_unlock_all(dev);
1053 void i915_driver_shutdown(struct drm_i915_private *i915)
1055 i915_gem_suspend(i915);
1057 drm_kms_helper_poll_disable(&i915->drm);
1059 drm_atomic_helper_shutdown(&i915->drm);
1061 intel_dp_mst_suspend(i915);
1063 intel_runtime_pm_disable_interrupts(i915);
1064 intel_hpd_cancel_work(i915);
1066 intel_suspend_encoders(i915);
1067 intel_shutdown_encoders(i915);
1070 static bool suspend_to_idle(struct drm_i915_private *dev_priv)
1072 #if IS_ENABLED(CONFIG_ACPI_SLEEP)
1073 if (acpi_target_system_state() < ACPI_STATE_S3)
1079 static int i915_drm_prepare(struct drm_device *dev)
1081 struct drm_i915_private *i915 = to_i915(dev);
1084 * NB intel_display_suspend() may issue new requests after we've
1085 * ostensibly marked the GPU as ready-to-sleep here. We need to
1086 * split out that work and pull it forward so that after point,
1087 * the GPU is not woken again.
1089 i915_gem_suspend(i915);
1094 static int i915_drm_suspend(struct drm_device *dev)
1096 struct drm_i915_private *dev_priv = to_i915(dev);
1097 struct pci_dev *pdev = dev_priv->drm.pdev;
1098 pci_power_t opregion_target_state;
1100 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1102 /* We do a lot of poking in a lot of registers, make sure they work
1104 intel_power_domains_disable(dev_priv);
1106 drm_kms_helper_poll_disable(dev);
1108 pci_save_state(pdev);
1110 intel_display_suspend(dev);
1112 intel_dp_mst_suspend(dev_priv);
1114 intel_runtime_pm_disable_interrupts(dev_priv);
1115 intel_hpd_cancel_work(dev_priv);
1117 intel_suspend_encoders(dev_priv);
1119 intel_suspend_hw(dev_priv);
1121 i915_ggtt_suspend(&dev_priv->ggtt);
1123 i915_save_display(dev_priv);
1125 opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold;
1126 intel_opregion_suspend(dev_priv, opregion_target_state);
1128 intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true);
1130 dev_priv->suspend_count++;
1132 intel_csr_ucode_suspend(dev_priv);
1134 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1139 static enum i915_drm_suspend_mode
1140 get_suspend_mode(struct drm_i915_private *dev_priv, bool hibernate)
1143 return I915_DRM_SUSPEND_HIBERNATE;
1145 if (suspend_to_idle(dev_priv))
1146 return I915_DRM_SUSPEND_IDLE;
1148 return I915_DRM_SUSPEND_MEM;
1151 static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation)
1153 struct drm_i915_private *dev_priv = to_i915(dev);
1154 struct pci_dev *pdev = dev_priv->drm.pdev;
1155 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
1158 disable_rpm_wakeref_asserts(rpm);
1160 i915_gem_suspend_late(dev_priv);
1162 intel_uncore_suspend(&dev_priv->uncore);
1164 intel_power_domains_suspend(dev_priv,
1165 get_suspend_mode(dev_priv, hibernation));
1167 intel_display_power_suspend_late(dev_priv);
1169 ret = vlv_suspend_complete(dev_priv);
1171 drm_err(&dev_priv->drm, "Suspend complete failed: %d\n", ret);
1172 intel_power_domains_resume(dev_priv);
1177 pci_disable_device(pdev);
1179 * During hibernation on some platforms the BIOS may try to access
1180 * the device even though it's already in D3 and hang the machine. So
1181 * leave the device in D0 on those platforms and hope the BIOS will
1182 * power down the device properly. The issue was seen on multiple old
1183 * GENs with different BIOS vendors, so having an explicit blacklist
1184 * is inpractical; apply the workaround on everything pre GEN6. The
1185 * platforms where the issue was seen:
1186 * Lenovo Thinkpad X301, X61s, X60, T60, X41
1190 if (!(hibernation && INTEL_GEN(dev_priv) < 6))
1191 pci_set_power_state(pdev, PCI_D3hot);
1194 enable_rpm_wakeref_asserts(rpm);
1195 if (!dev_priv->uncore.user_forcewake_count)
1196 intel_runtime_pm_driver_release(rpm);
1201 int i915_suspend_switcheroo(struct drm_i915_private *i915, pm_message_t state)
1205 if (drm_WARN_ON_ONCE(&i915->drm, state.event != PM_EVENT_SUSPEND &&
1206 state.event != PM_EVENT_FREEZE))
1209 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1212 error = i915_drm_suspend(&i915->drm);
1216 return i915_drm_suspend_late(&i915->drm, false);
1219 static int i915_drm_resume(struct drm_device *dev)
1221 struct drm_i915_private *dev_priv = to_i915(dev);
1224 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1226 sanitize_gpu(dev_priv);
1228 ret = i915_ggtt_enable_hw(dev_priv);
1230 drm_err(&dev_priv->drm, "failed to re-enable GGTT\n");
1232 i915_ggtt_resume(&dev_priv->ggtt);
1234 intel_csr_ucode_resume(dev_priv);
1236 i915_restore_display(dev_priv);
1237 intel_pps_unlock_regs_wa(dev_priv);
1239 intel_init_pch_refclk(dev_priv);
1242 * Interrupts have to be enabled before any batches are run. If not the
1243 * GPU will hang. i915_gem_init_hw() will initiate batches to
1244 * update/restore the context.
1246 * drm_mode_config_reset() needs AUX interrupts.
1248 * Modeset enabling in intel_modeset_init_hw() also needs working
1251 intel_runtime_pm_enable_interrupts(dev_priv);
1253 drm_mode_config_reset(dev);
1255 i915_gem_resume(dev_priv);
1257 intel_modeset_init_hw(dev_priv);
1258 intel_init_clock_gating(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_resume(dev);
1265 intel_hpd_poll_disable(dev_priv);
1266 drm_kms_helper_poll_enable(dev);
1268 intel_opregion_resume(dev_priv);
1270 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false);
1272 intel_power_domains_enable(dev_priv);
1274 intel_gvt_resume(dev_priv);
1276 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1281 static int i915_drm_resume_early(struct drm_device *dev)
1283 struct drm_i915_private *dev_priv = to_i915(dev);
1284 struct pci_dev *pdev = dev_priv->drm.pdev;
1288 * We have a resume ordering issue with the snd-hda driver also
1289 * requiring our device to be power up. Due to the lack of a
1290 * parent/child relationship we currently solve this with an early
1293 * FIXME: This should be solved with a special hdmi sink device or
1294 * similar so that power domains can be employed.
1298 * Note that we need to set the power state explicitly, since we
1299 * powered off the device during freeze and the PCI core won't power
1300 * it back up for us during thaw. Powering off the device during
1301 * freeze is not a hard requirement though, and during the
1302 * suspend/resume phases the PCI core makes sure we get here with the
1303 * device powered on. So in case we change our freeze logic and keep
1304 * the device powered we can also remove the following set power state
1307 ret = pci_set_power_state(pdev, PCI_D0);
1309 drm_err(&dev_priv->drm,
1310 "failed to set PCI D0 power state (%d)\n", ret);
1315 * Note that pci_enable_device() first enables any parent bridge
1316 * device and only then sets the power state for this device. The
1317 * bridge enabling is a nop though, since bridge devices are resumed
1318 * first. The order of enabling power and enabling the device is
1319 * imposed by the PCI core as described above, so here we preserve the
1320 * same order for the freeze/thaw phases.
1322 * TODO: eventually we should remove pci_disable_device() /
1323 * pci_enable_enable_device() from suspend/resume. Due to how they
1324 * depend on the device enable refcount we can't anyway depend on them
1325 * disabling/enabling the device.
1327 if (pci_enable_device(pdev))
1330 pci_set_master(pdev);
1332 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1334 ret = vlv_resume_prepare(dev_priv, false);
1336 drm_err(&dev_priv->drm,
1337 "Resume prepare failed: %d, continuing anyway\n", ret);
1339 intel_uncore_resume_early(&dev_priv->uncore);
1341 intel_gt_check_and_clear_faults(&dev_priv->gt);
1343 intel_display_power_resume_early(dev_priv);
1345 intel_power_domains_resume(dev_priv);
1347 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1352 int i915_resume_switcheroo(struct drm_i915_private *i915)
1356 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1359 ret = i915_drm_resume_early(&i915->drm);
1363 return i915_drm_resume(&i915->drm);
1366 static int i915_pm_prepare(struct device *kdev)
1368 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1371 dev_err(kdev, "DRM not initialized, aborting suspend.\n");
1375 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1378 return i915_drm_prepare(&i915->drm);
1381 static int i915_pm_suspend(struct device *kdev)
1383 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1386 dev_err(kdev, "DRM not initialized, aborting suspend.\n");
1390 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1393 return i915_drm_suspend(&i915->drm);
1396 static int i915_pm_suspend_late(struct device *kdev)
1398 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1401 * We have a suspend ordering issue with the snd-hda driver also
1402 * requiring our device to be power up. Due to the lack of a
1403 * parent/child relationship we currently solve this with an late
1406 * FIXME: This should be solved with a special hdmi sink device or
1407 * similar so that power domains can be employed.
1409 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1412 return i915_drm_suspend_late(&i915->drm, false);
1415 static int i915_pm_poweroff_late(struct device *kdev)
1417 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1419 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1422 return i915_drm_suspend_late(&i915->drm, true);
1425 static int i915_pm_resume_early(struct device *kdev)
1427 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1429 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1432 return i915_drm_resume_early(&i915->drm);
1435 static int i915_pm_resume(struct device *kdev)
1437 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1439 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1442 return i915_drm_resume(&i915->drm);
1445 /* freeze: before creating the hibernation_image */
1446 static int i915_pm_freeze(struct device *kdev)
1448 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1451 if (i915->drm.switch_power_state != DRM_SWITCH_POWER_OFF) {
1452 ret = i915_drm_suspend(&i915->drm);
1457 ret = i915_gem_freeze(i915);
1464 static int i915_pm_freeze_late(struct device *kdev)
1466 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1469 if (i915->drm.switch_power_state != DRM_SWITCH_POWER_OFF) {
1470 ret = i915_drm_suspend_late(&i915->drm, true);
1475 ret = i915_gem_freeze_late(i915);
1482 /* thaw: called after creating the hibernation image, but before turning off. */
1483 static int i915_pm_thaw_early(struct device *kdev)
1485 return i915_pm_resume_early(kdev);
1488 static int i915_pm_thaw(struct device *kdev)
1490 return i915_pm_resume(kdev);
1493 /* restore: called after loading the hibernation image. */
1494 static int i915_pm_restore_early(struct device *kdev)
1496 return i915_pm_resume_early(kdev);
1499 static int i915_pm_restore(struct device *kdev)
1501 return i915_pm_resume(kdev);
1504 static int intel_runtime_suspend(struct device *kdev)
1506 struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
1507 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
1510 if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv)))
1513 drm_dbg_kms(&dev_priv->drm, "Suspending device\n");
1515 disable_rpm_wakeref_asserts(rpm);
1518 * We are safe here against re-faults, since the fault handler takes
1521 i915_gem_runtime_suspend(dev_priv);
1523 intel_gt_runtime_suspend(&dev_priv->gt);
1525 intel_runtime_pm_disable_interrupts(dev_priv);
1527 intel_uncore_suspend(&dev_priv->uncore);
1529 intel_display_power_suspend(dev_priv);
1531 ret = vlv_suspend_complete(dev_priv);
1533 drm_err(&dev_priv->drm,
1534 "Runtime suspend failed, disabling it (%d)\n", ret);
1535 intel_uncore_runtime_resume(&dev_priv->uncore);
1537 intel_runtime_pm_enable_interrupts(dev_priv);
1539 intel_gt_runtime_resume(&dev_priv->gt);
1541 enable_rpm_wakeref_asserts(rpm);
1546 enable_rpm_wakeref_asserts(rpm);
1547 intel_runtime_pm_driver_release(rpm);
1549 if (intel_uncore_arm_unclaimed_mmio_detection(&dev_priv->uncore))
1550 drm_err(&dev_priv->drm,
1551 "Unclaimed access detected prior to suspending\n");
1553 rpm->suspended = true;
1556 * FIXME: We really should find a document that references the arguments
1559 if (IS_BROADWELL(dev_priv)) {
1561 * On Broadwell, if we use PCI_D1 the PCH DDI ports will stop
1562 * being detected, and the call we do at intel_runtime_resume()
1563 * won't be able to restore them. Since PCI_D3hot matches the
1564 * actual specification and appears to be working, use it.
1566 intel_opregion_notify_adapter(dev_priv, PCI_D3hot);
1569 * current versions of firmware which depend on this opregion
1570 * notification have repurposed the D1 definition to mean
1571 * "runtime suspended" vs. what you would normally expect (D3)
1572 * to distinguish it from notifications that might be sent via
1575 intel_opregion_notify_adapter(dev_priv, PCI_D1);
1578 assert_forcewakes_inactive(&dev_priv->uncore);
1580 if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
1581 intel_hpd_poll_enable(dev_priv);
1583 drm_dbg_kms(&dev_priv->drm, "Device suspended\n");
1587 static int intel_runtime_resume(struct device *kdev)
1589 struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
1590 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
1593 if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv)))
1596 drm_dbg_kms(&dev_priv->drm, "Resuming device\n");
1598 drm_WARN_ON_ONCE(&dev_priv->drm, atomic_read(&rpm->wakeref_count));
1599 disable_rpm_wakeref_asserts(rpm);
1601 intel_opregion_notify_adapter(dev_priv, PCI_D0);
1602 rpm->suspended = false;
1603 if (intel_uncore_unclaimed_mmio(&dev_priv->uncore))
1604 drm_dbg(&dev_priv->drm,
1605 "Unclaimed access during suspend, bios?\n");
1607 intel_display_power_resume(dev_priv);
1609 ret = vlv_resume_prepare(dev_priv, true);
1611 intel_uncore_runtime_resume(&dev_priv->uncore);
1613 intel_runtime_pm_enable_interrupts(dev_priv);
1616 * No point of rolling back things in case of an error, as the best
1617 * we can do is to hope that things will still work (and disable RPM).
1619 intel_gt_runtime_resume(&dev_priv->gt);
1622 * On VLV/CHV display interrupts are part of the display
1623 * power well, so hpd is reinitialized from there. For
1624 * everyone else do it here.
1626 if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) {
1627 intel_hpd_init(dev_priv);
1628 intel_hpd_poll_disable(dev_priv);
1631 intel_enable_ipc(dev_priv);
1633 enable_rpm_wakeref_asserts(rpm);
1636 drm_err(&dev_priv->drm,
1637 "Runtime resume failed, disabling it (%d)\n", ret);
1639 drm_dbg_kms(&dev_priv->drm, "Device resumed\n");
1644 const struct dev_pm_ops i915_pm_ops = {
1646 * S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND,
1649 .prepare = i915_pm_prepare,
1650 .suspend = i915_pm_suspend,
1651 .suspend_late = i915_pm_suspend_late,
1652 .resume_early = i915_pm_resume_early,
1653 .resume = i915_pm_resume,
1657 * @freeze, @freeze_late : called (1) before creating the
1658 * hibernation image [PMSG_FREEZE] and
1659 * (2) after rebooting, before restoring
1660 * the image [PMSG_QUIESCE]
1661 * @thaw, @thaw_early : called (1) after creating the hibernation
1662 * image, before writing it [PMSG_THAW]
1663 * and (2) after failing to create or
1664 * restore the image [PMSG_RECOVER]
1665 * @poweroff, @poweroff_late: called after writing the hibernation
1666 * image, before rebooting [PMSG_HIBERNATE]
1667 * @restore, @restore_early : called after rebooting and restoring the
1668 * hibernation image [PMSG_RESTORE]
1670 .freeze = i915_pm_freeze,
1671 .freeze_late = i915_pm_freeze_late,
1672 .thaw_early = i915_pm_thaw_early,
1673 .thaw = i915_pm_thaw,
1674 .poweroff = i915_pm_suspend,
1675 .poweroff_late = i915_pm_poweroff_late,
1676 .restore_early = i915_pm_restore_early,
1677 .restore = i915_pm_restore,
1679 /* S0ix (via runtime suspend) event handlers */
1680 .runtime_suspend = intel_runtime_suspend,
1681 .runtime_resume = intel_runtime_resume,
1684 static const struct file_operations i915_driver_fops = {
1685 .owner = THIS_MODULE,
1687 .release = drm_release_noglobal,
1688 .unlocked_ioctl = drm_ioctl,
1689 .mmap = i915_gem_mmap,
1692 .compat_ioctl = i915_ioc32_compat_ioctl,
1693 .llseek = noop_llseek,
1697 i915_gem_reject_pin_ioctl(struct drm_device *dev, void *data,
1698 struct drm_file *file)
1703 static const struct drm_ioctl_desc i915_ioctls[] = {
1704 DRM_IOCTL_DEF_DRV(I915_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1705 DRM_IOCTL_DEF_DRV(I915_FLUSH, drm_noop, DRM_AUTH),
1706 DRM_IOCTL_DEF_DRV(I915_FLIP, drm_noop, DRM_AUTH),
1707 DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, drm_noop, DRM_AUTH),
1708 DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, drm_noop, DRM_AUTH),
1709 DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, drm_noop, DRM_AUTH),
1710 DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam_ioctl, DRM_RENDER_ALLOW),
1711 DRM_IOCTL_DEF_DRV(I915_SETPARAM, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1712 DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH),
1713 DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH),
1714 DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1715 DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, drm_noop, DRM_AUTH),
1716 DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1717 DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1718 DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, drm_noop, DRM_AUTH),
1719 DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, drm_noop, DRM_AUTH),
1720 DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1721 DRM_IOCTL_DEF_DRV(I915_GEM_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1722 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer_ioctl, DRM_AUTH),
1723 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2_WR, i915_gem_execbuffer2_ioctl, DRM_RENDER_ALLOW),
1724 DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
1725 DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
1726 DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_RENDER_ALLOW),
1727 DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_RENDER_ALLOW),
1728 DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_RENDER_ALLOW),
1729 DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_RENDER_ALLOW),
1730 DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1731 DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1732 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_RENDER_ALLOW),
1733 DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_RENDER_ALLOW),
1734 DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_RENDER_ALLOW),
1735 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_RENDER_ALLOW),
1736 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_OFFSET, i915_gem_mmap_offset_ioctl, DRM_RENDER_ALLOW),
1737 DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_RENDER_ALLOW),
1738 DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_RENDER_ALLOW),
1739 DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling_ioctl, DRM_RENDER_ALLOW),
1740 DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling_ioctl, DRM_RENDER_ALLOW),
1741 DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_RENDER_ALLOW),
1742 DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id_ioctl, 0),
1743 DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_RENDER_ALLOW),
1744 DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image_ioctl, DRM_MASTER),
1745 DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs_ioctl, DRM_MASTER),
1746 DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey_ioctl, DRM_MASTER),
1747 DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER),
1748 DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_RENDER_ALLOW),
1749 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE_EXT, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW),
1750 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW),
1751 DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW),
1752 DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS, i915_gem_context_reset_stats_ioctl, DRM_RENDER_ALLOW),
1753 DRM_IOCTL_DEF_DRV(I915_GEM_USERPTR, i915_gem_userptr_ioctl, DRM_RENDER_ALLOW),
1754 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM, i915_gem_context_getparam_ioctl, DRM_RENDER_ALLOW),
1755 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM, i915_gem_context_setparam_ioctl, DRM_RENDER_ALLOW),
1756 DRM_IOCTL_DEF_DRV(I915_PERF_OPEN, i915_perf_open_ioctl, DRM_RENDER_ALLOW),
1757 DRM_IOCTL_DEF_DRV(I915_PERF_ADD_CONFIG, i915_perf_add_config_ioctl, DRM_RENDER_ALLOW),
1758 DRM_IOCTL_DEF_DRV(I915_PERF_REMOVE_CONFIG, i915_perf_remove_config_ioctl, DRM_RENDER_ALLOW),
1759 DRM_IOCTL_DEF_DRV(I915_QUERY, i915_query_ioctl, DRM_RENDER_ALLOW),
1760 DRM_IOCTL_DEF_DRV(I915_GEM_VM_CREATE, i915_gem_vm_create_ioctl, DRM_RENDER_ALLOW),
1761 DRM_IOCTL_DEF_DRV(I915_GEM_VM_DESTROY, i915_gem_vm_destroy_ioctl, DRM_RENDER_ALLOW),
1764 static const struct drm_driver driver = {
1765 /* Don't use MTRRs here; the Xserver or userspace app should
1766 * deal with them for Intel hardware.
1770 DRIVER_RENDER | DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_SYNCOBJ |
1771 DRIVER_SYNCOBJ_TIMELINE,
1772 .release = i915_driver_release,
1773 .open = i915_driver_open,
1774 .lastclose = i915_driver_lastclose,
1775 .postclose = i915_driver_postclose,
1777 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1778 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1779 .gem_prime_import = i915_gem_prime_import,
1781 .dumb_create = i915_gem_dumb_create,
1782 .dumb_map_offset = i915_gem_dumb_mmap_offset,
1784 .ioctls = i915_ioctls,
1785 .num_ioctls = ARRAY_SIZE(i915_ioctls),
1786 .fops = &i915_driver_fops,
1787 .name = DRIVER_NAME,
1788 .desc = DRIVER_DESC,
1789 .date = DRIVER_DATE,
1790 .major = DRIVER_MAJOR,
1791 .minor = DRIVER_MINOR,
1792 .patchlevel = DRIVER_PATCHLEVEL,