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/pnp.h>
38 #include <linux/slab.h>
39 #include <linux/string_helpers.h>
40 #include <linux/vga_switcheroo.h>
43 #include <drm/drm_aperture.h>
44 #include <drm/drm_atomic_helper.h>
45 #include <drm/drm_ioctl.h>
46 #include <drm/drm_managed.h>
47 #include <drm/drm_probe_helper.h>
49 #include "display/intel_acpi.h"
50 #include "display/intel_bw.h"
51 #include "display/intel_cdclk.h"
52 #include "display/intel_display_types.h"
53 #include "display/intel_dmc.h"
54 #include "display/intel_dp.h"
55 #include "display/intel_dpt.h"
56 #include "display/intel_fbdev.h"
57 #include "display/intel_hotplug.h"
58 #include "display/intel_overlay.h"
59 #include "display/intel_pch_refclk.h"
60 #include "display/intel_pipe_crc.h"
61 #include "display/intel_pps.h"
62 #include "display/intel_sprite.h"
63 #include "display/intel_vga.h"
64 #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_rc6.h"
76 #include "pxp/intel_pxp_pm.h"
78 #include "i915_file_private.h"
79 #include "i915_debugfs.h"
80 #include "i915_driver.h"
81 #include "i915_drm_client.h"
83 #include "i915_getparam.h"
84 #include "i915_hwmon.h"
85 #include "i915_ioc32.h"
86 #include "i915_ioctl.h"
88 #include "i915_memcpy.h"
89 #include "i915_perf.h"
90 #include "i915_query.h"
91 #include "i915_suspend.h"
92 #include "i915_switcheroo.h"
93 #include "i915_sysfs.h"
94 #include "i915_utils.h"
95 #include "i915_vgpu.h"
96 #include "intel_dram.h"
97 #include "intel_gvt.h"
98 #include "intel_memory_region.h"
99 #include "intel_pci_config.h"
100 #include "intel_pcode.h"
101 #include "intel_pm.h"
102 #include "intel_region_ttm.h"
103 #include "vlv_suspend.h"
105 /* Intel Rapid Start Technology ACPI device name */
106 static const char irst_name[] = "INT3392";
108 static const struct drm_driver i915_drm_driver;
110 static void i915_release_bridge_dev(struct drm_device *dev,
116 static int i915_get_bridge_dev(struct drm_i915_private *dev_priv)
118 int domain = pci_domain_nr(to_pci_dev(dev_priv->drm.dev)->bus);
120 dev_priv->bridge_dev =
121 pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(0, 0));
122 if (!dev_priv->bridge_dev) {
123 drm_err(&dev_priv->drm, "bridge device not found\n");
127 return drmm_add_action_or_reset(&dev_priv->drm, i915_release_bridge_dev,
128 dev_priv->bridge_dev);
131 /* Allocate space for the MCH regs if needed, return nonzero on error */
133 intel_alloc_mchbar_resource(struct drm_i915_private *dev_priv)
135 int reg = GRAPHICS_VER(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915;
136 u32 temp_lo, temp_hi = 0;
140 if (GRAPHICS_VER(dev_priv) >= 4)
141 pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
142 pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
143 mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
145 /* If ACPI doesn't have it, assume we need to allocate it ourselves */
148 pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE))
152 /* Get some space for it */
153 dev_priv->mch_res.name = "i915 MCHBAR";
154 dev_priv->mch_res.flags = IORESOURCE_MEM;
155 ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus,
157 MCHBAR_SIZE, MCHBAR_SIZE,
159 0, pcibios_align_resource,
160 dev_priv->bridge_dev);
162 drm_dbg(&dev_priv->drm, "failed bus alloc: %d\n", ret);
163 dev_priv->mch_res.start = 0;
167 if (GRAPHICS_VER(dev_priv) >= 4)
168 pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
169 upper_32_bits(dev_priv->mch_res.start));
171 pci_write_config_dword(dev_priv->bridge_dev, reg,
172 lower_32_bits(dev_priv->mch_res.start));
176 /* Setup MCHBAR if possible, return true if we should disable it again */
178 intel_setup_mchbar(struct drm_i915_private *dev_priv)
180 int mchbar_reg = GRAPHICS_VER(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915;
184 if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
187 dev_priv->mchbar_need_disable = false;
189 if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) {
190 pci_read_config_dword(dev_priv->bridge_dev, DEVEN, &temp);
191 enabled = !!(temp & DEVEN_MCHBAR_EN);
193 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
197 /* If it's already enabled, don't have to do anything */
201 if (intel_alloc_mchbar_resource(dev_priv))
204 dev_priv->mchbar_need_disable = true;
206 /* Space is allocated or reserved, so enable it. */
207 if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) {
208 pci_write_config_dword(dev_priv->bridge_dev, DEVEN,
209 temp | DEVEN_MCHBAR_EN);
211 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
212 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
217 intel_teardown_mchbar(struct drm_i915_private *dev_priv)
219 int mchbar_reg = GRAPHICS_VER(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915;
221 if (dev_priv->mchbar_need_disable) {
222 if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) {
225 pci_read_config_dword(dev_priv->bridge_dev, DEVEN,
227 deven_val &= ~DEVEN_MCHBAR_EN;
228 pci_write_config_dword(dev_priv->bridge_dev, DEVEN,
233 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg,
236 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg,
241 if (dev_priv->mch_res.start)
242 release_resource(&dev_priv->mch_res);
245 static int i915_workqueues_init(struct drm_i915_private *dev_priv)
248 * The i915 workqueue is primarily used for batched retirement of
249 * requests (and thus managing bo) once the task has been completed
250 * by the GPU. i915_retire_requests() is called directly when we
251 * need high-priority retirement, such as waiting for an explicit
254 * It is also used for periodic low-priority events, such as
255 * idle-timers and recording error state.
257 * All tasks on the workqueue are expected to acquire the dev mutex
258 * so there is no point in running more than one instance of the
259 * workqueue at any time. Use an ordered one.
261 dev_priv->wq = alloc_ordered_workqueue("i915", 0);
262 if (dev_priv->wq == NULL)
265 dev_priv->display.hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0);
266 if (dev_priv->display.hotplug.dp_wq == NULL)
272 destroy_workqueue(dev_priv->wq);
274 drm_err(&dev_priv->drm, "Failed to allocate workqueues.\n");
279 static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv)
281 destroy_workqueue(dev_priv->display.hotplug.dp_wq);
282 destroy_workqueue(dev_priv->wq);
286 * We don't keep the workarounds for pre-production hardware, so we expect our
287 * driver to fail on these machines in one way or another. A little warning on
288 * dmesg may help both the user and the bug triagers.
290 * Our policy for removing pre-production workarounds is to keep the
291 * current gen workarounds as a guide to the bring-up of the next gen
292 * (workarounds have a habit of persisting!). Anything older than that
293 * should be removed along with the complications they introduce.
295 static void intel_detect_preproduction_hw(struct drm_i915_private *dev_priv)
299 pre |= IS_HSW_EARLY_SDV(dev_priv);
300 pre |= IS_SKYLAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x6;
301 pre |= IS_BROXTON(dev_priv) && INTEL_REVID(dev_priv) < 0xA;
302 pre |= IS_KABYLAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x1;
303 pre |= IS_GEMINILAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x3;
304 pre |= IS_ICELAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x7;
307 drm_err(&dev_priv->drm, "This is a pre-production stepping. "
308 "It may not be fully functional.\n");
309 add_taint(TAINT_MACHINE_CHECK, LOCKDEP_STILL_OK);
313 static void sanitize_gpu(struct drm_i915_private *i915)
315 if (!INTEL_INFO(i915)->gpu_reset_clobbers_display) {
319 for_each_gt(gt, i915, i)
320 __intel_gt_reset(gt, ALL_ENGINES);
325 * i915_driver_early_probe - setup state not requiring device access
326 * @dev_priv: device private
328 * Initialize everything that is a "SW-only" state, that is state not
329 * requiring accessing the device or exposing the driver via kernel internal
330 * or userspace interfaces. Example steps belonging here: lock initialization,
331 * system memory allocation, setting up device specific attributes and
332 * function hooks not requiring accessing the device.
334 static int i915_driver_early_probe(struct drm_i915_private *dev_priv)
338 if (i915_inject_probe_failure(dev_priv))
341 intel_device_info_runtime_init_early(dev_priv);
343 intel_step_init(dev_priv);
345 intel_uncore_mmio_debug_init_early(dev_priv);
347 spin_lock_init(&dev_priv->irq_lock);
348 spin_lock_init(&dev_priv->gpu_error.lock);
349 mutex_init(&dev_priv->display.backlight.lock);
351 mutex_init(&dev_priv->sb_lock);
352 cpu_latency_qos_add_request(&dev_priv->sb_qos, PM_QOS_DEFAULT_VALUE);
354 mutex_init(&dev_priv->display.audio.mutex);
355 mutex_init(&dev_priv->display.wm.wm_mutex);
356 mutex_init(&dev_priv->display.pps.mutex);
357 mutex_init(&dev_priv->display.hdcp.comp_mutex);
358 spin_lock_init(&dev_priv->display.dkl.phy_lock);
360 i915_memcpy_init_early(dev_priv);
361 intel_runtime_pm_init_early(&dev_priv->runtime_pm);
363 ret = i915_workqueues_init(dev_priv);
367 ret = vlv_suspend_init(dev_priv);
371 ret = intel_region_ttm_device_init(dev_priv);
375 intel_wopcm_init_early(&dev_priv->wopcm);
377 ret = intel_root_gt_init_early(dev_priv);
381 i915_drm_clients_init(&dev_priv->clients, dev_priv);
383 i915_gem_init_early(dev_priv);
385 /* This must be called before any calls to HAS_PCH_* */
386 intel_detect_pch(dev_priv);
388 intel_pm_setup(dev_priv);
389 ret = intel_power_domains_init(dev_priv);
392 intel_irq_init(dev_priv);
393 intel_init_display_hooks(dev_priv);
394 intel_init_clock_gating_hooks(dev_priv);
396 intel_detect_preproduction_hw(dev_priv);
401 i915_gem_cleanup_early(dev_priv);
402 intel_gt_driver_late_release_all(dev_priv);
403 i915_drm_clients_fini(&dev_priv->clients);
405 intel_region_ttm_device_fini(dev_priv);
407 vlv_suspend_cleanup(dev_priv);
409 i915_workqueues_cleanup(dev_priv);
414 * i915_driver_late_release - cleanup the setup done in
415 * i915_driver_early_probe()
416 * @dev_priv: device private
418 static void i915_driver_late_release(struct drm_i915_private *dev_priv)
420 intel_irq_fini(dev_priv);
421 intel_power_domains_cleanup(dev_priv);
422 i915_gem_cleanup_early(dev_priv);
423 intel_gt_driver_late_release_all(dev_priv);
424 i915_drm_clients_fini(&dev_priv->clients);
425 intel_region_ttm_device_fini(dev_priv);
426 vlv_suspend_cleanup(dev_priv);
427 i915_workqueues_cleanup(dev_priv);
429 cpu_latency_qos_remove_request(&dev_priv->sb_qos);
430 mutex_destroy(&dev_priv->sb_lock);
432 i915_params_free(&dev_priv->params);
436 * i915_driver_mmio_probe - setup device MMIO
437 * @dev_priv: device private
439 * Setup minimal device state necessary for MMIO accesses later in the
440 * initialization sequence. The setup here should avoid any other device-wide
441 * side effects or exposing the driver via kernel internal or user space
444 static int i915_driver_mmio_probe(struct drm_i915_private *dev_priv)
449 if (i915_inject_probe_failure(dev_priv))
452 ret = i915_get_bridge_dev(dev_priv);
456 for_each_gt(gt, dev_priv, i) {
457 ret = intel_uncore_init_mmio(gt->uncore);
461 ret = drmm_add_action_or_reset(&dev_priv->drm,
462 intel_uncore_fini_mmio,
468 /* Try to make sure MCHBAR is enabled before poking at it */
469 intel_setup_mchbar(dev_priv);
470 intel_device_info_runtime_init(dev_priv);
472 for_each_gt(gt, dev_priv, i) {
473 ret = intel_gt_init_mmio(gt);
478 /* As early as possible, scrub existing GPU state before clobbering */
479 sanitize_gpu(dev_priv);
484 intel_teardown_mchbar(dev_priv);
490 * i915_driver_mmio_release - cleanup the setup done in i915_driver_mmio_probe()
491 * @dev_priv: device private
493 static void i915_driver_mmio_release(struct drm_i915_private *dev_priv)
495 intel_teardown_mchbar(dev_priv);
499 * i915_set_dma_info - set all relevant PCI dma info as configured for the
501 * @i915: valid i915 instance
503 * Set the dma max segment size, device and coherent masks. The dma mask set
504 * needs to occur before i915_ggtt_probe_hw.
506 * A couple of platforms have special needs. Address them as well.
509 static int i915_set_dma_info(struct drm_i915_private *i915)
511 unsigned int mask_size = INTEL_INFO(i915)->dma_mask_size;
514 GEM_BUG_ON(!mask_size);
517 * We don't have a max segment size, so set it to the max so sg's
518 * debugging layer doesn't complain
520 dma_set_max_seg_size(i915->drm.dev, UINT_MAX);
522 ret = dma_set_mask(i915->drm.dev, DMA_BIT_MASK(mask_size));
526 /* overlay on gen2 is broken and can't address above 1G */
527 if (GRAPHICS_VER(i915) == 2)
531 * 965GM sometimes incorrectly writes to hardware status page (HWS)
532 * using 32bit addressing, overwriting memory if HWS is located
535 * The documentation also mentions an issue with undefined
536 * behaviour if any general state is accessed within a page above 4GB,
537 * which also needs to be handled carefully.
539 if (IS_I965G(i915) || IS_I965GM(i915))
542 ret = dma_set_coherent_mask(i915->drm.dev, DMA_BIT_MASK(mask_size));
549 drm_err(&i915->drm, "Can't set DMA mask/consistent mask (%d)\n", ret);
553 static int i915_pcode_init(struct drm_i915_private *i915)
558 for_each_gt(gt, i915, id) {
559 ret = intel_pcode_init(gt->uncore);
561 drm_err(>->i915->drm, "gt%d: intel_pcode_init failed %d\n", id, ret);
570 * i915_driver_hw_probe - setup state requiring device access
571 * @dev_priv: device private
573 * Setup state that requires accessing the device, but doesn't require
574 * exposing the driver via kernel internal or userspace interfaces.
576 static int i915_driver_hw_probe(struct drm_i915_private *dev_priv)
578 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
579 struct pci_dev *root_pdev;
582 if (i915_inject_probe_failure(dev_priv))
585 if (HAS_PPGTT(dev_priv)) {
586 if (intel_vgpu_active(dev_priv) &&
587 !intel_vgpu_has_full_ppgtt(dev_priv)) {
588 i915_report_error(dev_priv,
589 "incompatible vGPU found, support for isolated ppGTT required\n");
594 if (HAS_EXECLISTS(dev_priv)) {
596 * Older GVT emulation depends upon intercepting CSB mmio,
597 * which we no longer use, preferring to use the HWSP cache
600 if (intel_vgpu_active(dev_priv) &&
601 !intel_vgpu_has_hwsp_emulation(dev_priv)) {
602 i915_report_error(dev_priv,
603 "old vGPU host found, support for HWSP emulation required\n");
608 /* needs to be done before ggtt probe */
609 intel_dram_edram_detect(dev_priv);
611 ret = i915_set_dma_info(dev_priv);
615 i915_perf_init(dev_priv);
617 ret = intel_gt_assign_ggtt(to_gt(dev_priv));
621 ret = i915_ggtt_probe_hw(dev_priv);
625 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, dev_priv->drm.driver);
629 ret = i915_ggtt_init_hw(dev_priv);
633 ret = intel_memory_regions_hw_probe(dev_priv);
637 ret = intel_gt_tiles_init(dev_priv);
639 goto err_mem_regions;
641 ret = i915_ggtt_enable_hw(dev_priv);
643 drm_err(&dev_priv->drm, "failed to enable GGTT\n");
644 goto err_mem_regions;
647 pci_set_master(pdev);
649 /* On the 945G/GM, the chipset reports the MSI capability on the
650 * integrated graphics even though the support isn't actually there
651 * according to the published specs. It doesn't appear to function
652 * correctly in testing on 945G.
653 * This may be a side effect of MSI having been made available for PEG
654 * and the registers being closely associated.
656 * According to chipset errata, on the 965GM, MSI interrupts may
657 * be lost or delayed, and was defeatured. MSI interrupts seem to
658 * get lost on g4x as well, and interrupt delivery seems to stay
659 * properly dead afterwards. So we'll just disable them for all
662 * dp aux and gmbus irq on gen4 seems to be able to generate legacy
663 * interrupts even when in MSI mode. This results in spurious
664 * interrupt warnings if the legacy irq no. is shared with another
665 * device. The kernel then disables that interrupt source and so
666 * prevents the other device from working properly.
668 if (GRAPHICS_VER(dev_priv) >= 5) {
669 if (pci_enable_msi(pdev) < 0)
670 drm_dbg(&dev_priv->drm, "can't enable MSI");
673 ret = intel_gvt_init(dev_priv);
677 intel_opregion_setup(dev_priv);
679 ret = i915_pcode_init(dev_priv);
684 * Fill the dram structure to get the system dram info. This will be
685 * used for memory latency calculation.
687 intel_dram_detect(dev_priv);
689 intel_bw_init_hw(dev_priv);
692 * FIXME: Temporary hammer to avoid freezing the machine on our DGFX
693 * This should be totally removed when we handle the pci states properly
694 * on runtime PM and on s2idle cases.
696 root_pdev = pcie_find_root_port(pdev);
698 pci_d3cold_disable(root_pdev);
703 if (pdev->msi_enabled)
704 pci_disable_msi(pdev);
706 intel_memory_regions_driver_release(dev_priv);
708 i915_ggtt_driver_release(dev_priv);
709 i915_gem_drain_freed_objects(dev_priv);
710 i915_ggtt_driver_late_release(dev_priv);
712 i915_perf_fini(dev_priv);
717 * i915_driver_hw_remove - cleanup the setup done in i915_driver_hw_probe()
718 * @dev_priv: device private
720 static void i915_driver_hw_remove(struct drm_i915_private *dev_priv)
722 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
723 struct pci_dev *root_pdev;
725 i915_perf_fini(dev_priv);
727 if (pdev->msi_enabled)
728 pci_disable_msi(pdev);
730 root_pdev = pcie_find_root_port(pdev);
732 pci_d3cold_enable(root_pdev);
736 * i915_driver_register - register the driver with the rest of the system
737 * @dev_priv: device private
739 * Perform any steps necessary to make the driver available via kernel
740 * internal or userspace interfaces.
742 static void i915_driver_register(struct drm_i915_private *dev_priv)
747 i915_gem_driver_register(dev_priv);
748 i915_pmu_register(dev_priv);
750 intel_vgpu_register(dev_priv);
752 /* Reveal our presence to userspace */
753 if (drm_dev_register(&dev_priv->drm, 0)) {
754 drm_err(&dev_priv->drm,
755 "Failed to register driver for userspace access!\n");
759 i915_debugfs_register(dev_priv);
760 i915_setup_sysfs(dev_priv);
762 /* Depends on sysfs having been initialized */
763 i915_perf_register(dev_priv);
765 for_each_gt(gt, dev_priv, i)
766 intel_gt_driver_register(gt);
768 i915_hwmon_register(dev_priv);
770 intel_display_driver_register(dev_priv);
772 intel_power_domains_enable(dev_priv);
773 intel_runtime_pm_enable(&dev_priv->runtime_pm);
775 intel_register_dsm_handler();
777 if (i915_switcheroo_register(dev_priv))
778 drm_err(&dev_priv->drm, "Failed to register vga switcheroo!\n");
782 * i915_driver_unregister - cleanup the registration done in i915_driver_regiser()
783 * @dev_priv: device private
785 static void i915_driver_unregister(struct drm_i915_private *dev_priv)
790 i915_switcheroo_unregister(dev_priv);
792 intel_unregister_dsm_handler();
794 intel_runtime_pm_disable(&dev_priv->runtime_pm);
795 intel_power_domains_disable(dev_priv);
797 intel_display_driver_unregister(dev_priv);
799 for_each_gt(gt, dev_priv, i)
800 intel_gt_driver_unregister(gt);
802 i915_hwmon_unregister(dev_priv);
804 i915_perf_unregister(dev_priv);
805 i915_pmu_unregister(dev_priv);
807 i915_teardown_sysfs(dev_priv);
808 drm_dev_unplug(&dev_priv->drm);
810 i915_gem_driver_unregister(dev_priv);
814 i915_print_iommu_status(struct drm_i915_private *i915, struct drm_printer *p)
816 drm_printf(p, "iommu: %s\n",
817 str_enabled_disabled(i915_vtd_active(i915)));
820 static void i915_welcome_messages(struct drm_i915_private *dev_priv)
822 if (drm_debug_enabled(DRM_UT_DRIVER)) {
823 struct drm_printer p = drm_debug_printer("i915 device info:");
827 drm_printf(&p, "pciid=0x%04x rev=0x%02x platform=%s (subplatform=0x%x) gen=%i\n",
828 INTEL_DEVID(dev_priv),
829 INTEL_REVID(dev_priv),
830 intel_platform_name(INTEL_INFO(dev_priv)->platform),
831 intel_subplatform(RUNTIME_INFO(dev_priv),
832 INTEL_INFO(dev_priv)->platform),
833 GRAPHICS_VER(dev_priv));
835 intel_device_info_print(INTEL_INFO(dev_priv),
836 RUNTIME_INFO(dev_priv), &p);
837 i915_print_iommu_status(dev_priv, &p);
838 for_each_gt(gt, dev_priv, i)
839 intel_gt_info_print(>->info, &p);
842 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG))
843 drm_info(&dev_priv->drm, "DRM_I915_DEBUG enabled\n");
844 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM))
845 drm_info(&dev_priv->drm, "DRM_I915_DEBUG_GEM enabled\n");
846 if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM))
847 drm_info(&dev_priv->drm,
848 "DRM_I915_DEBUG_RUNTIME_PM enabled\n");
851 static struct drm_i915_private *
852 i915_driver_create(struct pci_dev *pdev, const struct pci_device_id *ent)
854 const struct intel_device_info *match_info =
855 (struct intel_device_info *)ent->driver_data;
856 struct intel_device_info *device_info;
857 struct intel_runtime_info *runtime;
858 struct drm_i915_private *i915;
860 i915 = devm_drm_dev_alloc(&pdev->dev, &i915_drm_driver,
861 struct drm_i915_private, drm);
865 pci_set_drvdata(pdev, i915);
867 /* Device parameters start as a copy of module parameters. */
868 i915_params_copy(&i915->params, &i915_modparams);
870 /* Setup the write-once "constant" device info */
871 device_info = mkwrite_device_info(i915);
872 memcpy(device_info, match_info, sizeof(*device_info));
874 /* Initialize initial runtime info from static const data and pdev. */
875 runtime = RUNTIME_INFO(i915);
876 memcpy(runtime, &INTEL_INFO(i915)->__runtime, sizeof(*runtime));
877 runtime->device_id = pdev->device;
883 * i915_driver_probe - setup chip and create an initial config
885 * @ent: matching PCI ID entry
887 * The driver probe routine has to do several things:
888 * - drive output discovery via intel_modeset_init()
889 * - initialize the memory manager
890 * - allocate initial config memory
891 * - setup the DRM framebuffer with the allocated memory
893 int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
895 struct drm_i915_private *i915;
898 i915 = i915_driver_create(pdev, ent);
900 return PTR_ERR(i915);
902 ret = pci_enable_device(pdev);
906 ret = i915_driver_early_probe(i915);
908 goto out_pci_disable;
910 disable_rpm_wakeref_asserts(&i915->runtime_pm);
912 intel_vgpu_detect(i915);
914 ret = intel_gt_probe_all(i915);
916 goto out_runtime_pm_put;
918 ret = i915_driver_mmio_probe(i915);
920 goto out_tiles_cleanup;
922 ret = i915_driver_hw_probe(i915);
924 goto out_cleanup_mmio;
926 ret = intel_modeset_init_noirq(i915);
930 ret = intel_irq_install(i915);
932 goto out_cleanup_modeset;
934 ret = intel_modeset_init_nogem(i915);
936 goto out_cleanup_irq;
938 ret = i915_gem_init(i915);
940 goto out_cleanup_modeset2;
942 ret = intel_modeset_init(i915);
944 goto out_cleanup_gem;
946 i915_driver_register(i915);
948 enable_rpm_wakeref_asserts(&i915->runtime_pm);
950 i915_welcome_messages(i915);
952 i915->do_release = true;
957 i915_gem_suspend(i915);
958 i915_gem_driver_remove(i915);
959 i915_gem_driver_release(i915);
960 out_cleanup_modeset2:
961 /* FIXME clean up the error path */
962 intel_modeset_driver_remove(i915);
963 intel_irq_uninstall(i915);
964 intel_modeset_driver_remove_noirq(i915);
965 goto out_cleanup_modeset;
967 intel_irq_uninstall(i915);
969 intel_modeset_driver_remove_nogem(i915);
971 i915_driver_hw_remove(i915);
972 intel_memory_regions_driver_release(i915);
973 i915_ggtt_driver_release(i915);
974 i915_gem_drain_freed_objects(i915);
975 i915_ggtt_driver_late_release(i915);
977 i915_driver_mmio_release(i915);
979 intel_gt_release_all(i915);
981 enable_rpm_wakeref_asserts(&i915->runtime_pm);
982 i915_driver_late_release(i915);
984 pci_disable_device(pdev);
986 i915_probe_error(i915, "Device initialization failed (%d)\n", ret);
990 void i915_driver_remove(struct drm_i915_private *i915)
992 intel_wakeref_t wakeref;
994 wakeref = intel_runtime_pm_get(&i915->runtime_pm);
996 i915_driver_unregister(i915);
998 /* Flush any external code that still may be under the RCU lock */
1001 i915_gem_suspend(i915);
1003 intel_gvt_driver_remove(i915);
1005 intel_modeset_driver_remove(i915);
1007 intel_irq_uninstall(i915);
1009 intel_modeset_driver_remove_noirq(i915);
1011 i915_reset_error_state(i915);
1012 i915_gem_driver_remove(i915);
1014 intel_modeset_driver_remove_nogem(i915);
1016 i915_driver_hw_remove(i915);
1018 intel_runtime_pm_put(&i915->runtime_pm, wakeref);
1021 static void i915_driver_release(struct drm_device *dev)
1023 struct drm_i915_private *dev_priv = to_i915(dev);
1024 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
1025 intel_wakeref_t wakeref;
1027 if (!dev_priv->do_release)
1030 wakeref = intel_runtime_pm_get(rpm);
1032 i915_gem_driver_release(dev_priv);
1034 intel_memory_regions_driver_release(dev_priv);
1035 i915_ggtt_driver_release(dev_priv);
1036 i915_gem_drain_freed_objects(dev_priv);
1037 i915_ggtt_driver_late_release(dev_priv);
1039 i915_driver_mmio_release(dev_priv);
1041 intel_runtime_pm_put(rpm, wakeref);
1043 intel_runtime_pm_driver_release(rpm);
1045 i915_driver_late_release(dev_priv);
1048 static int i915_driver_open(struct drm_device *dev, struct drm_file *file)
1050 struct drm_i915_private *i915 = to_i915(dev);
1053 ret = i915_gem_open(i915, file);
1061 * i915_driver_lastclose - clean up after all DRM clients have exited
1064 * Take care of cleaning up after all DRM clients have exited. In the
1065 * mode setting case, we want to restore the kernel's initial mode (just
1066 * in case the last client left us in a bad state).
1068 * Additionally, in the non-mode setting case, we'll tear down the GTT
1069 * and DMA structures, since the kernel won't be using them, and clea
1072 static void i915_driver_lastclose(struct drm_device *dev)
1074 struct drm_i915_private *i915 = to_i915(dev);
1076 intel_fbdev_restore_mode(dev);
1078 if (HAS_DISPLAY(i915))
1079 vga_switcheroo_process_delayed_switch();
1082 static void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)
1084 struct drm_i915_file_private *file_priv = file->driver_priv;
1086 i915_gem_context_close(file);
1087 i915_drm_client_put(file_priv->client);
1089 kfree_rcu(file_priv, rcu);
1091 /* Catch up with all the deferred frees from "this" client */
1092 i915_gem_flush_free_objects(to_i915(dev));
1095 static void intel_suspend_encoders(struct drm_i915_private *dev_priv)
1097 struct intel_encoder *encoder;
1099 if (!HAS_DISPLAY(dev_priv))
1102 drm_modeset_lock_all(&dev_priv->drm);
1103 for_each_intel_encoder(&dev_priv->drm, encoder)
1104 if (encoder->suspend)
1105 encoder->suspend(encoder);
1106 drm_modeset_unlock_all(&dev_priv->drm);
1109 static void intel_shutdown_encoders(struct drm_i915_private *dev_priv)
1111 struct intel_encoder *encoder;
1113 if (!HAS_DISPLAY(dev_priv))
1116 drm_modeset_lock_all(&dev_priv->drm);
1117 for_each_intel_encoder(&dev_priv->drm, encoder)
1118 if (encoder->shutdown)
1119 encoder->shutdown(encoder);
1120 drm_modeset_unlock_all(&dev_priv->drm);
1123 void i915_driver_shutdown(struct drm_i915_private *i915)
1125 disable_rpm_wakeref_asserts(&i915->runtime_pm);
1126 intel_runtime_pm_disable(&i915->runtime_pm);
1127 intel_power_domains_disable(i915);
1129 if (HAS_DISPLAY(i915)) {
1130 drm_kms_helper_poll_disable(&i915->drm);
1132 drm_atomic_helper_shutdown(&i915->drm);
1135 intel_dp_mst_suspend(i915);
1137 intel_runtime_pm_disable_interrupts(i915);
1138 intel_hpd_cancel_work(i915);
1140 intel_suspend_encoders(i915);
1141 intel_shutdown_encoders(i915);
1143 intel_dmc_ucode_suspend(i915);
1145 i915_gem_suspend(i915);
1148 * The only requirement is to reboot with display DC states disabled,
1149 * for now leaving all display power wells in the INIT power domain
1153 * - unify the pci_driver::shutdown sequence here with the
1154 * pci_driver.driver.pm.poweroff,poweroff_late sequence.
1155 * - unify the driver remove and system/runtime suspend sequences with
1156 * the above unified shutdown/poweroff sequence.
1158 intel_power_domains_driver_remove(i915);
1159 enable_rpm_wakeref_asserts(&i915->runtime_pm);
1161 intel_runtime_pm_driver_release(&i915->runtime_pm);
1164 static bool suspend_to_idle(struct drm_i915_private *dev_priv)
1166 #if IS_ENABLED(CONFIG_ACPI_SLEEP)
1167 if (acpi_target_system_state() < ACPI_STATE_S3)
1173 static int i915_drm_prepare(struct drm_device *dev)
1175 struct drm_i915_private *i915 = to_i915(dev);
1178 * NB intel_display_suspend() may issue new requests after we've
1179 * ostensibly marked the GPU as ready-to-sleep here. We need to
1180 * split out that work and pull it forward so that after point,
1181 * the GPU is not woken again.
1183 return i915_gem_backup_suspend(i915);
1186 static int i915_drm_suspend(struct drm_device *dev)
1188 struct drm_i915_private *dev_priv = to_i915(dev);
1189 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
1190 pci_power_t opregion_target_state;
1192 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1194 /* We do a lot of poking in a lot of registers, make sure they work
1196 intel_power_domains_disable(dev_priv);
1197 if (HAS_DISPLAY(dev_priv))
1198 drm_kms_helper_poll_disable(dev);
1200 pci_save_state(pdev);
1202 intel_display_suspend(dev);
1204 intel_dp_mst_suspend(dev_priv);
1206 intel_runtime_pm_disable_interrupts(dev_priv);
1207 intel_hpd_cancel_work(dev_priv);
1209 intel_suspend_encoders(dev_priv);
1211 intel_suspend_hw(dev_priv);
1213 /* Must be called before GGTT is suspended. */
1214 intel_dpt_suspend(dev_priv);
1215 i915_ggtt_suspend(to_gt(dev_priv)->ggtt);
1217 i915_save_display(dev_priv);
1219 opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold;
1220 intel_opregion_suspend(dev_priv, opregion_target_state);
1222 intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true);
1224 dev_priv->suspend_count++;
1226 intel_dmc_ucode_suspend(dev_priv);
1228 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1230 i915_gem_drain_freed_objects(dev_priv);
1235 static enum i915_drm_suspend_mode
1236 get_suspend_mode(struct drm_i915_private *dev_priv, bool hibernate)
1239 return I915_DRM_SUSPEND_HIBERNATE;
1241 if (suspend_to_idle(dev_priv))
1242 return I915_DRM_SUSPEND_IDLE;
1244 return I915_DRM_SUSPEND_MEM;
1247 static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation)
1249 struct drm_i915_private *dev_priv = to_i915(dev);
1250 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
1251 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
1252 struct intel_gt *gt;
1255 disable_rpm_wakeref_asserts(rpm);
1257 i915_gem_suspend_late(dev_priv);
1259 for_each_gt(gt, dev_priv, i)
1260 intel_uncore_suspend(gt->uncore);
1262 intel_power_domains_suspend(dev_priv,
1263 get_suspend_mode(dev_priv, hibernation));
1265 intel_display_power_suspend_late(dev_priv);
1267 ret = vlv_suspend_complete(dev_priv);
1269 drm_err(&dev_priv->drm, "Suspend complete failed: %d\n", ret);
1270 intel_power_domains_resume(dev_priv);
1275 pci_disable_device(pdev);
1277 * During hibernation on some platforms the BIOS may try to access
1278 * the device even though it's already in D3 and hang the machine. So
1279 * leave the device in D0 on those platforms and hope the BIOS will
1280 * power down the device properly. The issue was seen on multiple old
1281 * GENs with different BIOS vendors, so having an explicit blacklist
1282 * is inpractical; apply the workaround on everything pre GEN6. The
1283 * platforms where the issue was seen:
1284 * Lenovo Thinkpad X301, X61s, X60, T60, X41
1288 if (!(hibernation && GRAPHICS_VER(dev_priv) < 6))
1289 pci_set_power_state(pdev, PCI_D3hot);
1292 enable_rpm_wakeref_asserts(rpm);
1293 if (!dev_priv->uncore.user_forcewake_count)
1294 intel_runtime_pm_driver_release(rpm);
1299 int i915_driver_suspend_switcheroo(struct drm_i915_private *i915,
1304 if (drm_WARN_ON_ONCE(&i915->drm, state.event != PM_EVENT_SUSPEND &&
1305 state.event != PM_EVENT_FREEZE))
1308 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1311 error = i915_drm_suspend(&i915->drm);
1315 return i915_drm_suspend_late(&i915->drm, false);
1318 static int i915_drm_resume(struct drm_device *dev)
1320 struct drm_i915_private *dev_priv = to_i915(dev);
1323 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1325 ret = i915_pcode_init(dev_priv);
1329 sanitize_gpu(dev_priv);
1331 ret = i915_ggtt_enable_hw(dev_priv);
1333 drm_err(&dev_priv->drm, "failed to re-enable GGTT\n");
1335 i915_ggtt_resume(to_gt(dev_priv)->ggtt);
1336 /* Must be called after GGTT is resumed. */
1337 intel_dpt_resume(dev_priv);
1339 intel_dmc_ucode_resume(dev_priv);
1341 i915_restore_display(dev_priv);
1342 intel_pps_unlock_regs_wa(dev_priv);
1344 intel_init_pch_refclk(dev_priv);
1347 * Interrupts have to be enabled before any batches are run. If not the
1348 * GPU will hang. i915_gem_init_hw() will initiate batches to
1349 * update/restore the context.
1351 * drm_mode_config_reset() needs AUX interrupts.
1353 * Modeset enabling in intel_modeset_init_hw() also needs working
1356 intel_runtime_pm_enable_interrupts(dev_priv);
1358 if (HAS_DISPLAY(dev_priv))
1359 drm_mode_config_reset(dev);
1361 i915_gem_resume(dev_priv);
1363 intel_modeset_init_hw(dev_priv);
1364 intel_init_clock_gating(dev_priv);
1365 intel_hpd_init(dev_priv);
1367 /* MST sideband requires HPD interrupts enabled */
1368 intel_dp_mst_resume(dev_priv);
1369 intel_display_resume(dev);
1371 intel_hpd_poll_disable(dev_priv);
1372 if (HAS_DISPLAY(dev_priv))
1373 drm_kms_helper_poll_enable(dev);
1375 intel_opregion_resume(dev_priv);
1377 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false);
1379 intel_power_domains_enable(dev_priv);
1381 intel_gvt_resume(dev_priv);
1383 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1388 static int i915_drm_resume_early(struct drm_device *dev)
1390 struct drm_i915_private *dev_priv = to_i915(dev);
1391 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
1392 struct intel_gt *gt;
1396 * We have a resume ordering issue with the snd-hda driver also
1397 * requiring our device to be power up. Due to the lack of a
1398 * parent/child relationship we currently solve this with an early
1401 * FIXME: This should be solved with a special hdmi sink device or
1402 * similar so that power domains can be employed.
1406 * Note that we need to set the power state explicitly, since we
1407 * powered off the device during freeze and the PCI core won't power
1408 * it back up for us during thaw. Powering off the device during
1409 * freeze is not a hard requirement though, and during the
1410 * suspend/resume phases the PCI core makes sure we get here with the
1411 * device powered on. So in case we change our freeze logic and keep
1412 * the device powered we can also remove the following set power state
1415 ret = pci_set_power_state(pdev, PCI_D0);
1417 drm_err(&dev_priv->drm,
1418 "failed to set PCI D0 power state (%d)\n", ret);
1423 * Note that pci_enable_device() first enables any parent bridge
1424 * device and only then sets the power state for this device. The
1425 * bridge enabling is a nop though, since bridge devices are resumed
1426 * first. The order of enabling power and enabling the device is
1427 * imposed by the PCI core as described above, so here we preserve the
1428 * same order for the freeze/thaw phases.
1430 * TODO: eventually we should remove pci_disable_device() /
1431 * pci_enable_enable_device() from suspend/resume. Due to how they
1432 * depend on the device enable refcount we can't anyway depend on them
1433 * disabling/enabling the device.
1435 if (pci_enable_device(pdev))
1438 pci_set_master(pdev);
1440 disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1442 ret = vlv_resume_prepare(dev_priv, false);
1444 drm_err(&dev_priv->drm,
1445 "Resume prepare failed: %d, continuing anyway\n", ret);
1447 for_each_gt(gt, dev_priv, i) {
1448 intel_uncore_resume_early(gt->uncore);
1449 intel_gt_check_and_clear_faults(gt);
1452 intel_display_power_resume_early(dev_priv);
1454 intel_power_domains_resume(dev_priv);
1456 enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
1461 int i915_driver_resume_switcheroo(struct drm_i915_private *i915)
1465 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1468 ret = i915_drm_resume_early(&i915->drm);
1472 return i915_drm_resume(&i915->drm);
1475 static int i915_pm_prepare(struct device *kdev)
1477 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1480 dev_err(kdev, "DRM not initialized, aborting suspend.\n");
1484 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1487 return i915_drm_prepare(&i915->drm);
1490 static int i915_pm_suspend(struct device *kdev)
1492 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1495 dev_err(kdev, "DRM not initialized, aborting suspend.\n");
1499 i915_ggtt_mark_pte_lost(i915, false);
1501 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1504 return i915_drm_suspend(&i915->drm);
1507 static int i915_pm_suspend_late(struct device *kdev)
1509 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1512 * We have a suspend ordering issue with the snd-hda driver also
1513 * requiring our device to be power up. Due to the lack of a
1514 * parent/child relationship we currently solve this with an late
1517 * FIXME: This should be solved with a special hdmi sink device or
1518 * similar so that power domains can be employed.
1520 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1523 return i915_drm_suspend_late(&i915->drm, false);
1526 static int i915_pm_poweroff_late(struct device *kdev)
1528 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1530 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1533 return i915_drm_suspend_late(&i915->drm, true);
1536 static int i915_pm_resume_early(struct device *kdev)
1538 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1540 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1543 return i915_drm_resume_early(&i915->drm);
1546 static int i915_pm_resume(struct device *kdev)
1548 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1550 if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF)
1554 * If IRST is enabled, or if we can't detect whether it's enabled,
1555 * then we must assume we lost the GGTT page table entries, since
1556 * they are not retained if IRST decided to enter S4.
1558 if (!IS_ENABLED(CONFIG_ACPI) || acpi_dev_present(irst_name, NULL, -1))
1559 i915_ggtt_mark_pte_lost(i915, true);
1561 return i915_drm_resume(&i915->drm);
1564 /* freeze: before creating the hibernation_image */
1565 static int i915_pm_freeze(struct device *kdev)
1567 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1570 if (i915->drm.switch_power_state != DRM_SWITCH_POWER_OFF) {
1571 ret = i915_drm_suspend(&i915->drm);
1576 ret = i915_gem_freeze(i915);
1583 static int i915_pm_freeze_late(struct device *kdev)
1585 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1588 if (i915->drm.switch_power_state != DRM_SWITCH_POWER_OFF) {
1589 ret = i915_drm_suspend_late(&i915->drm, true);
1594 ret = i915_gem_freeze_late(i915);
1601 /* thaw: called after creating the hibernation image, but before turning off. */
1602 static int i915_pm_thaw_early(struct device *kdev)
1604 return i915_pm_resume_early(kdev);
1607 static int i915_pm_thaw(struct device *kdev)
1609 return i915_pm_resume(kdev);
1612 /* restore: called after loading the hibernation image. */
1613 static int i915_pm_restore_early(struct device *kdev)
1615 return i915_pm_resume_early(kdev);
1618 static int i915_pm_restore(struct device *kdev)
1620 struct drm_i915_private *i915 = kdev_to_i915(kdev);
1622 i915_ggtt_mark_pte_lost(i915, true);
1623 return i915_pm_resume(kdev);
1626 static int intel_runtime_suspend(struct device *kdev)
1628 struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
1629 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
1630 struct intel_gt *gt;
1633 if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv)))
1636 drm_dbg(&dev_priv->drm, "Suspending device\n");
1638 disable_rpm_wakeref_asserts(rpm);
1641 * We are safe here against re-faults, since the fault handler takes
1644 i915_gem_runtime_suspend(dev_priv);
1646 for_each_gt(gt, dev_priv, i)
1647 intel_gt_runtime_suspend(gt);
1649 intel_runtime_pm_disable_interrupts(dev_priv);
1651 for_each_gt(gt, dev_priv, i)
1652 intel_uncore_suspend(gt->uncore);
1654 intel_display_power_suspend(dev_priv);
1656 ret = vlv_suspend_complete(dev_priv);
1658 drm_err(&dev_priv->drm,
1659 "Runtime suspend failed, disabling it (%d)\n", ret);
1660 intel_uncore_runtime_resume(&dev_priv->uncore);
1662 intel_runtime_pm_enable_interrupts(dev_priv);
1664 for_each_gt(gt, dev_priv, i)
1665 intel_gt_runtime_resume(gt);
1667 enable_rpm_wakeref_asserts(rpm);
1672 enable_rpm_wakeref_asserts(rpm);
1673 intel_runtime_pm_driver_release(rpm);
1675 if (intel_uncore_arm_unclaimed_mmio_detection(&dev_priv->uncore))
1676 drm_err(&dev_priv->drm,
1677 "Unclaimed access detected prior to suspending\n");
1679 rpm->suspended = true;
1682 * FIXME: We really should find a document that references the arguments
1685 if (IS_BROADWELL(dev_priv)) {
1687 * On Broadwell, if we use PCI_D1 the PCH DDI ports will stop
1688 * being detected, and the call we do at intel_runtime_resume()
1689 * won't be able to restore them. Since PCI_D3hot matches the
1690 * actual specification and appears to be working, use it.
1692 intel_opregion_notify_adapter(dev_priv, PCI_D3hot);
1695 * current versions of firmware which depend on this opregion
1696 * notification have repurposed the D1 definition to mean
1697 * "runtime suspended" vs. what you would normally expect (D3)
1698 * to distinguish it from notifications that might be sent via
1701 intel_opregion_notify_adapter(dev_priv, PCI_D1);
1704 assert_forcewakes_inactive(&dev_priv->uncore);
1706 if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
1707 intel_hpd_poll_enable(dev_priv);
1709 drm_dbg(&dev_priv->drm, "Device suspended\n");
1713 static int intel_runtime_resume(struct device *kdev)
1715 struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
1716 struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
1717 struct intel_gt *gt;
1720 if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv)))
1723 drm_dbg(&dev_priv->drm, "Resuming device\n");
1725 drm_WARN_ON_ONCE(&dev_priv->drm, atomic_read(&rpm->wakeref_count));
1726 disable_rpm_wakeref_asserts(rpm);
1728 intel_opregion_notify_adapter(dev_priv, PCI_D0);
1729 rpm->suspended = false;
1730 if (intel_uncore_unclaimed_mmio(&dev_priv->uncore))
1731 drm_dbg(&dev_priv->drm,
1732 "Unclaimed access during suspend, bios?\n");
1734 intel_display_power_resume(dev_priv);
1736 ret = vlv_resume_prepare(dev_priv, true);
1738 for_each_gt(gt, dev_priv, i)
1739 intel_uncore_runtime_resume(gt->uncore);
1741 intel_runtime_pm_enable_interrupts(dev_priv);
1744 * No point of rolling back things in case of an error, as the best
1745 * we can do is to hope that things will still work (and disable RPM).
1747 for_each_gt(gt, dev_priv, i)
1748 intel_gt_runtime_resume(gt);
1751 * On VLV/CHV display interrupts are part of the display
1752 * power well, so hpd is reinitialized from there. For
1753 * everyone else do it here.
1755 if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) {
1756 intel_hpd_init(dev_priv);
1757 intel_hpd_poll_disable(dev_priv);
1760 skl_watermark_ipc_update(dev_priv);
1762 enable_rpm_wakeref_asserts(rpm);
1765 drm_err(&dev_priv->drm,
1766 "Runtime resume failed, disabling it (%d)\n", ret);
1768 drm_dbg(&dev_priv->drm, "Device resumed\n");
1773 const struct dev_pm_ops i915_pm_ops = {
1775 * S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND,
1778 .prepare = i915_pm_prepare,
1779 .suspend = i915_pm_suspend,
1780 .suspend_late = i915_pm_suspend_late,
1781 .resume_early = i915_pm_resume_early,
1782 .resume = i915_pm_resume,
1786 * @freeze, @freeze_late : called (1) before creating the
1787 * hibernation image [PMSG_FREEZE] and
1788 * (2) after rebooting, before restoring
1789 * the image [PMSG_QUIESCE]
1790 * @thaw, @thaw_early : called (1) after creating the hibernation
1791 * image, before writing it [PMSG_THAW]
1792 * and (2) after failing to create or
1793 * restore the image [PMSG_RECOVER]
1794 * @poweroff, @poweroff_late: called after writing the hibernation
1795 * image, before rebooting [PMSG_HIBERNATE]
1796 * @restore, @restore_early : called after rebooting and restoring the
1797 * hibernation image [PMSG_RESTORE]
1799 .freeze = i915_pm_freeze,
1800 .freeze_late = i915_pm_freeze_late,
1801 .thaw_early = i915_pm_thaw_early,
1802 .thaw = i915_pm_thaw,
1803 .poweroff = i915_pm_suspend,
1804 .poweroff_late = i915_pm_poweroff_late,
1805 .restore_early = i915_pm_restore_early,
1806 .restore = i915_pm_restore,
1808 /* S0ix (via runtime suspend) event handlers */
1809 .runtime_suspend = intel_runtime_suspend,
1810 .runtime_resume = intel_runtime_resume,
1813 static const struct file_operations i915_driver_fops = {
1814 .owner = THIS_MODULE,
1816 .release = drm_release_noglobal,
1817 .unlocked_ioctl = drm_ioctl,
1818 .mmap = i915_gem_mmap,
1821 .compat_ioctl = i915_ioc32_compat_ioctl,
1822 .llseek = noop_llseek,
1823 #ifdef CONFIG_PROC_FS
1824 .show_fdinfo = i915_drm_client_fdinfo,
1829 i915_gem_reject_pin_ioctl(struct drm_device *dev, void *data,
1830 struct drm_file *file)
1835 static const struct drm_ioctl_desc i915_ioctls[] = {
1836 DRM_IOCTL_DEF_DRV(I915_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1837 DRM_IOCTL_DEF_DRV(I915_FLUSH, drm_noop, DRM_AUTH),
1838 DRM_IOCTL_DEF_DRV(I915_FLIP, drm_noop, DRM_AUTH),
1839 DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, drm_noop, DRM_AUTH),
1840 DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, drm_noop, DRM_AUTH),
1841 DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, drm_noop, DRM_AUTH),
1842 DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam_ioctl, DRM_RENDER_ALLOW),
1843 DRM_IOCTL_DEF_DRV(I915_SETPARAM, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1844 DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH),
1845 DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH),
1846 DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1847 DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, drm_noop, DRM_AUTH),
1848 DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1849 DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1850 DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, drm_noop, DRM_AUTH),
1851 DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, drm_noop, DRM_AUTH),
1852 DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1853 DRM_IOCTL_DEF_DRV(I915_GEM_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1854 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, drm_invalid_op, DRM_AUTH),
1855 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2_WR, i915_gem_execbuffer2_ioctl, DRM_RENDER_ALLOW),
1856 DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
1857 DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
1858 DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_RENDER_ALLOW),
1859 DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_RENDER_ALLOW),
1860 DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_RENDER_ALLOW),
1861 DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_RENDER_ALLOW),
1862 DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1863 DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1864 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_RENDER_ALLOW),
1865 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE_EXT, i915_gem_create_ext_ioctl, DRM_RENDER_ALLOW),
1866 DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_RENDER_ALLOW),
1867 DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_RENDER_ALLOW),
1868 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_RENDER_ALLOW),
1869 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_OFFSET, i915_gem_mmap_offset_ioctl, DRM_RENDER_ALLOW),
1870 DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_RENDER_ALLOW),
1871 DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_RENDER_ALLOW),
1872 DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling_ioctl, DRM_RENDER_ALLOW),
1873 DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling_ioctl, DRM_RENDER_ALLOW),
1874 DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_RENDER_ALLOW),
1875 DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id_ioctl, 0),
1876 DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_RENDER_ALLOW),
1877 DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image_ioctl, DRM_MASTER),
1878 DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs_ioctl, DRM_MASTER),
1879 DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey_ioctl, DRM_MASTER),
1880 DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER),
1881 DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_RENDER_ALLOW),
1882 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE_EXT, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW),
1883 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW),
1884 DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW),
1885 DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS, i915_gem_context_reset_stats_ioctl, DRM_RENDER_ALLOW),
1886 DRM_IOCTL_DEF_DRV(I915_GEM_USERPTR, i915_gem_userptr_ioctl, DRM_RENDER_ALLOW),
1887 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM, i915_gem_context_getparam_ioctl, DRM_RENDER_ALLOW),
1888 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM, i915_gem_context_setparam_ioctl, DRM_RENDER_ALLOW),
1889 DRM_IOCTL_DEF_DRV(I915_PERF_OPEN, i915_perf_open_ioctl, DRM_RENDER_ALLOW),
1890 DRM_IOCTL_DEF_DRV(I915_PERF_ADD_CONFIG, i915_perf_add_config_ioctl, DRM_RENDER_ALLOW),
1891 DRM_IOCTL_DEF_DRV(I915_PERF_REMOVE_CONFIG, i915_perf_remove_config_ioctl, DRM_RENDER_ALLOW),
1892 DRM_IOCTL_DEF_DRV(I915_QUERY, i915_query_ioctl, DRM_RENDER_ALLOW),
1893 DRM_IOCTL_DEF_DRV(I915_GEM_VM_CREATE, i915_gem_vm_create_ioctl, DRM_RENDER_ALLOW),
1894 DRM_IOCTL_DEF_DRV(I915_GEM_VM_DESTROY, i915_gem_vm_destroy_ioctl, DRM_RENDER_ALLOW),
1898 * Interface history:
1901 * 1.2: Add Power Management
1902 * 1.3: Add vblank support
1903 * 1.4: Fix cmdbuffer path, add heap destroy
1904 * 1.5: Add vblank pipe configuration
1905 * 1.6: - New ioctl for scheduling buffer swaps on vertical blank
1906 * - Support vertical blank on secondary display pipe
1908 #define DRIVER_MAJOR 1
1909 #define DRIVER_MINOR 6
1910 #define DRIVER_PATCHLEVEL 0
1912 static const struct drm_driver i915_drm_driver = {
1913 /* Don't use MTRRs here; the Xserver or userspace app should
1914 * deal with them for Intel hardware.
1918 DRIVER_RENDER | DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_SYNCOBJ |
1919 DRIVER_SYNCOBJ_TIMELINE,
1920 .release = i915_driver_release,
1921 .open = i915_driver_open,
1922 .lastclose = i915_driver_lastclose,
1923 .postclose = i915_driver_postclose,
1925 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1926 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1927 .gem_prime_import = i915_gem_prime_import,
1929 .dumb_create = i915_gem_dumb_create,
1930 .dumb_map_offset = i915_gem_dumb_mmap_offset,
1932 .ioctls = i915_ioctls,
1933 .num_ioctls = ARRAY_SIZE(i915_ioctls),
1934 .fops = &i915_driver_fops,
1935 .name = DRIVER_NAME,
1936 .desc = DRIVER_DESC,
1937 .date = DRIVER_DATE,
1938 .major = DRIVER_MAJOR,
1939 .minor = DRIVER_MINOR,
1940 .patchlevel = DRIVER_PATCHLEVEL,