/* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*- */ /* * * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "display/intel_acpi.h" #include "display/intel_bw.h" #include "display/intel_cdclk.h" #include "display/intel_display_types.h" #include "display/intel_dmc.h" #include "display/intel_dp.h" #include "display/intel_dpt.h" #include "display/intel_fbdev.h" #include "display/intel_hotplug.h" #include "display/intel_overlay.h" #include "display/intel_pch_refclk.h" #include "display/intel_pipe_crc.h" #include "display/intel_pps.h" #include "display/intel_sprite.h" #include "display/intel_vga.h" #include "display/skl_watermark.h" #include "gem/i915_gem_context.h" #include "gem/i915_gem_create.h" #include "gem/i915_gem_dmabuf.h" #include "gem/i915_gem_ioctls.h" #include "gem/i915_gem_mman.h" #include "gem/i915_gem_pm.h" #include "gt/intel_gt.h" #include "gt/intel_gt_pm.h" #include "gt/intel_rc6.h" #include "pxp/intel_pxp_pm.h" #include "i915_file_private.h" #include "i915_debugfs.h" #include "i915_driver.h" #include "i915_drm_client.h" #include "i915_drv.h" #include "i915_getparam.h" #include "i915_ioc32.h" #include "i915_ioctl.h" #include "i915_irq.h" #include "i915_memcpy.h" #include "i915_perf.h" #include "i915_query.h" #include "i915_suspend.h" #include "i915_switcheroo.h" #include "i915_sysfs.h" #include "i915_utils.h" #include "i915_vgpu.h" #include "intel_dram.h" #include "intel_gvt.h" #include "intel_memory_region.h" #include "intel_pci_config.h" #include "intel_pcode.h" #include "intel_pm.h" #include "intel_region_ttm.h" #include "vlv_suspend.h" /* Intel Rapid Start Technology ACPI device name */ static const char irst_name[] = "INT3392"; static const struct drm_driver i915_drm_driver; static void i915_release_bridge_dev(struct drm_device *dev, void *bridge) { pci_dev_put(bridge); } static int i915_get_bridge_dev(struct drm_i915_private *dev_priv) { int domain = pci_domain_nr(to_pci_dev(dev_priv->drm.dev)->bus); dev_priv->bridge_dev = pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(0, 0)); if (!dev_priv->bridge_dev) { drm_err(&dev_priv->drm, "bridge device not found\n"); return -EIO; } return drmm_add_action_or_reset(&dev_priv->drm, i915_release_bridge_dev, dev_priv->bridge_dev); } /* Allocate space for the MCH regs if needed, return nonzero on error */ static int intel_alloc_mchbar_resource(struct drm_i915_private *dev_priv) { int reg = GRAPHICS_VER(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915; u32 temp_lo, temp_hi = 0; u64 mchbar_addr; int ret; if (GRAPHICS_VER(dev_priv) >= 4) pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi); pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo); mchbar_addr = ((u64)temp_hi << 32) | temp_lo; /* If ACPI doesn't have it, assume we need to allocate it ourselves */ #ifdef CONFIG_PNP if (mchbar_addr && pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE)) return 0; #endif /* Get some space for it */ dev_priv->mch_res.name = "i915 MCHBAR"; dev_priv->mch_res.flags = IORESOURCE_MEM; ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus, &dev_priv->mch_res, MCHBAR_SIZE, MCHBAR_SIZE, PCIBIOS_MIN_MEM, 0, pcibios_align_resource, dev_priv->bridge_dev); if (ret) { drm_dbg(&dev_priv->drm, "failed bus alloc: %d\n", ret); dev_priv->mch_res.start = 0; return ret; } if (GRAPHICS_VER(dev_priv) >= 4) pci_write_config_dword(dev_priv->bridge_dev, reg + 4, upper_32_bits(dev_priv->mch_res.start)); pci_write_config_dword(dev_priv->bridge_dev, reg, lower_32_bits(dev_priv->mch_res.start)); return 0; } /* Setup MCHBAR if possible, return true if we should disable it again */ static void intel_setup_mchbar(struct drm_i915_private *dev_priv) { int mchbar_reg = GRAPHICS_VER(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915; u32 temp; bool enabled; if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) return; dev_priv->mchbar_need_disable = false; if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) { pci_read_config_dword(dev_priv->bridge_dev, DEVEN, &temp); enabled = !!(temp & DEVEN_MCHBAR_EN); } else { pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); enabled = temp & 1; } /* If it's already enabled, don't have to do anything */ if (enabled) return; if (intel_alloc_mchbar_resource(dev_priv)) return; dev_priv->mchbar_need_disable = true; /* Space is allocated or reserved, so enable it. */ if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) { pci_write_config_dword(dev_priv->bridge_dev, DEVEN, temp | DEVEN_MCHBAR_EN); } else { pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1); } } static void intel_teardown_mchbar(struct drm_i915_private *dev_priv) { int mchbar_reg = GRAPHICS_VER(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915; if (dev_priv->mchbar_need_disable) { if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) { u32 deven_val; pci_read_config_dword(dev_priv->bridge_dev, DEVEN, &deven_val); deven_val &= ~DEVEN_MCHBAR_EN; pci_write_config_dword(dev_priv->bridge_dev, DEVEN, deven_val); } else { u32 mchbar_val; pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &mchbar_val); mchbar_val &= ~1; pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, mchbar_val); } } if (dev_priv->mch_res.start) release_resource(&dev_priv->mch_res); } static int i915_workqueues_init(struct drm_i915_private *dev_priv) { /* * The i915 workqueue is primarily used for batched retirement of * requests (and thus managing bo) once the task has been completed * by the GPU. i915_retire_requests() is called directly when we * need high-priority retirement, such as waiting for an explicit * bo. * * It is also used for periodic low-priority events, such as * idle-timers and recording error state. * * All tasks on the workqueue are expected to acquire the dev mutex * so there is no point in running more than one instance of the * workqueue at any time. Use an ordered one. */ dev_priv->wq = alloc_ordered_workqueue("i915", 0); if (dev_priv->wq == NULL) goto out_err; dev_priv->display.hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0); if (dev_priv->display.hotplug.dp_wq == NULL) goto out_free_wq; return 0; out_free_wq: destroy_workqueue(dev_priv->wq); out_err: drm_err(&dev_priv->drm, "Failed to allocate workqueues.\n"); return -ENOMEM; } static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv) { destroy_workqueue(dev_priv->display.hotplug.dp_wq); destroy_workqueue(dev_priv->wq); } /* * We don't keep the workarounds for pre-production hardware, so we expect our * driver to fail on these machines in one way or another. A little warning on * dmesg may help both the user and the bug triagers. * * Our policy for removing pre-production workarounds is to keep the * current gen workarounds as a guide to the bring-up of the next gen * (workarounds have a habit of persisting!). Anything older than that * should be removed along with the complications they introduce. */ static void intel_detect_preproduction_hw(struct drm_i915_private *dev_priv) { bool pre = false; pre |= IS_HSW_EARLY_SDV(dev_priv); pre |= IS_SKYLAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x6; pre |= IS_BROXTON(dev_priv) && INTEL_REVID(dev_priv) < 0xA; pre |= IS_KABYLAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x1; pre |= IS_GEMINILAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x3; pre |= IS_ICELAKE(dev_priv) && INTEL_REVID(dev_priv) < 0x7; if (pre) { drm_err(&dev_priv->drm, "This is a pre-production stepping. " "It may not be fully functional.\n"); add_taint(TAINT_MACHINE_CHECK, LOCKDEP_STILL_OK); } } static void sanitize_gpu(struct drm_i915_private *i915) { if (!INTEL_INFO(i915)->gpu_reset_clobbers_display) { struct intel_gt *gt; unsigned int i; for_each_gt(gt, i915, i) __intel_gt_reset(gt, ALL_ENGINES); } } /** * i915_driver_early_probe - setup state not requiring device access * @dev_priv: device private * * Initialize everything that is a "SW-only" state, that is state not * requiring accessing the device or exposing the driver via kernel internal * or userspace interfaces. Example steps belonging here: lock initialization, * system memory allocation, setting up device specific attributes and * function hooks not requiring accessing the device. */ static int i915_driver_early_probe(struct drm_i915_private *dev_priv) { int ret = 0; if (i915_inject_probe_failure(dev_priv)) return -ENODEV; intel_device_info_subplatform_init(dev_priv); intel_step_init(dev_priv); intel_uncore_mmio_debug_init_early(dev_priv); spin_lock_init(&dev_priv->irq_lock); spin_lock_init(&dev_priv->gpu_error.lock); mutex_init(&dev_priv->display.backlight.lock); mutex_init(&dev_priv->sb_lock); cpu_latency_qos_add_request(&dev_priv->sb_qos, PM_QOS_DEFAULT_VALUE); mutex_init(&dev_priv->display.audio.mutex); mutex_init(&dev_priv->display.wm.wm_mutex); mutex_init(&dev_priv->display.pps.mutex); mutex_init(&dev_priv->display.hdcp.comp_mutex); spin_lock_init(&dev_priv->display.dkl.phy_lock); i915_memcpy_init_early(dev_priv); intel_runtime_pm_init_early(&dev_priv->runtime_pm); ret = i915_workqueues_init(dev_priv); if (ret < 0) return ret; ret = vlv_suspend_init(dev_priv); if (ret < 0) goto err_workqueues; ret = intel_region_ttm_device_init(dev_priv); if (ret) goto err_ttm; intel_wopcm_init_early(&dev_priv->wopcm); ret = intel_root_gt_init_early(dev_priv); if (ret < 0) goto err_rootgt; i915_drm_clients_init(&dev_priv->clients, dev_priv); i915_gem_init_early(dev_priv); /* This must be called before any calls to HAS_PCH_* */ intel_detect_pch(dev_priv); intel_pm_setup(dev_priv); ret = intel_power_domains_init(dev_priv); if (ret < 0) goto err_gem; intel_irq_init(dev_priv); intel_init_display_hooks(dev_priv); intel_init_clock_gating_hooks(dev_priv); intel_detect_preproduction_hw(dev_priv); return 0; err_gem: i915_gem_cleanup_early(dev_priv); intel_gt_driver_late_release_all(dev_priv); i915_drm_clients_fini(&dev_priv->clients); err_rootgt: intel_region_ttm_device_fini(dev_priv); err_ttm: vlv_suspend_cleanup(dev_priv); err_workqueues: i915_workqueues_cleanup(dev_priv); return ret; } /** * i915_driver_late_release - cleanup the setup done in * i915_driver_early_probe() * @dev_priv: device private */ static void i915_driver_late_release(struct drm_i915_private *dev_priv) { intel_irq_fini(dev_priv); intel_power_domains_cleanup(dev_priv); i915_gem_cleanup_early(dev_priv); intel_gt_driver_late_release_all(dev_priv); i915_drm_clients_fini(&dev_priv->clients); intel_region_ttm_device_fini(dev_priv); vlv_suspend_cleanup(dev_priv); i915_workqueues_cleanup(dev_priv); cpu_latency_qos_remove_request(&dev_priv->sb_qos); mutex_destroy(&dev_priv->sb_lock); i915_params_free(&dev_priv->params); } /** * i915_driver_mmio_probe - setup device MMIO * @dev_priv: device private * * Setup minimal device state necessary for MMIO accesses later in the * initialization sequence. The setup here should avoid any other device-wide * side effects or exposing the driver via kernel internal or user space * interfaces. */ static int i915_driver_mmio_probe(struct drm_i915_private *dev_priv) { struct intel_gt *gt; int ret, i; if (i915_inject_probe_failure(dev_priv)) return -ENODEV; ret = i915_get_bridge_dev(dev_priv); if (ret < 0) return ret; for_each_gt(gt, dev_priv, i) { ret = intel_uncore_init_mmio(gt->uncore); if (ret) return ret; ret = drmm_add_action_or_reset(&dev_priv->drm, intel_uncore_fini_mmio, gt->uncore); if (ret) return ret; } /* Try to make sure MCHBAR is enabled before poking at it */ intel_setup_mchbar(dev_priv); intel_device_info_runtime_init(dev_priv); for_each_gt(gt, dev_priv, i) { ret = intel_gt_init_mmio(gt); if (ret) goto err_uncore; } /* As early as possible, scrub existing GPU state before clobbering */ sanitize_gpu(dev_priv); return 0; err_uncore: intel_teardown_mchbar(dev_priv); return ret; } /** * i915_driver_mmio_release - cleanup the setup done in i915_driver_mmio_probe() * @dev_priv: device private */ static void i915_driver_mmio_release(struct drm_i915_private *dev_priv) { intel_teardown_mchbar(dev_priv); } /** * i915_set_dma_info - set all relevant PCI dma info as configured for the * platform * @i915: valid i915 instance * * Set the dma max segment size, device and coherent masks. The dma mask set * needs to occur before i915_ggtt_probe_hw. * * A couple of platforms have special needs. Address them as well. * */ static int i915_set_dma_info(struct drm_i915_private *i915) { unsigned int mask_size = INTEL_INFO(i915)->dma_mask_size; int ret; GEM_BUG_ON(!mask_size); /* * We don't have a max segment size, so set it to the max so sg's * debugging layer doesn't complain */ dma_set_max_seg_size(i915->drm.dev, UINT_MAX); ret = dma_set_mask(i915->drm.dev, DMA_BIT_MASK(mask_size)); if (ret) goto mask_err; /* overlay on gen2 is broken and can't address above 1G */ if (GRAPHICS_VER(i915) == 2) mask_size = 30; /* * 965GM sometimes incorrectly writes to hardware status page (HWS) * using 32bit addressing, overwriting memory if HWS is located * above 4GB. * * The documentation also mentions an issue with undefined * behaviour if any general state is accessed within a page above 4GB, * which also needs to be handled carefully. */ if (IS_I965G(i915) || IS_I965GM(i915)) mask_size = 32; ret = dma_set_coherent_mask(i915->drm.dev, DMA_BIT_MASK(mask_size)); if (ret) goto mask_err; return 0; mask_err: drm_err(&i915->drm, "Can't set DMA mask/consistent mask (%d)\n", ret); return ret; } static int i915_pcode_init(struct drm_i915_private *i915) { struct intel_gt *gt; int id, ret; for_each_gt(gt, i915, id) { ret = intel_pcode_init(gt->uncore); if (ret) { drm_err(>->i915->drm, "gt%d: intel_pcode_init failed %d\n", id, ret); return ret; } } return 0; } /** * i915_driver_hw_probe - setup state requiring device access * @dev_priv: device private * * Setup state that requires accessing the device, but doesn't require * exposing the driver via kernel internal or userspace interfaces. */ static int i915_driver_hw_probe(struct drm_i915_private *dev_priv) { struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); int ret; if (i915_inject_probe_failure(dev_priv)) return -ENODEV; if (HAS_PPGTT(dev_priv)) { if (intel_vgpu_active(dev_priv) && !intel_vgpu_has_full_ppgtt(dev_priv)) { i915_report_error(dev_priv, "incompatible vGPU found, support for isolated ppGTT required\n"); return -ENXIO; } } if (HAS_EXECLISTS(dev_priv)) { /* * Older GVT emulation depends upon intercepting CSB mmio, * which we no longer use, preferring to use the HWSP cache * instead. */ if (intel_vgpu_active(dev_priv) && !intel_vgpu_has_hwsp_emulation(dev_priv)) { i915_report_error(dev_priv, "old vGPU host found, support for HWSP emulation required\n"); return -ENXIO; } } /* needs to be done before ggtt probe */ intel_dram_edram_detect(dev_priv); ret = i915_set_dma_info(dev_priv); if (ret) return ret; i915_perf_init(dev_priv); ret = intel_gt_assign_ggtt(to_gt(dev_priv)); if (ret) goto err_perf; ret = i915_ggtt_probe_hw(dev_priv); if (ret) goto err_perf; ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, dev_priv->drm.driver); if (ret) goto err_ggtt; ret = i915_ggtt_init_hw(dev_priv); if (ret) goto err_ggtt; ret = intel_memory_regions_hw_probe(dev_priv); if (ret) goto err_ggtt; ret = intel_gt_tiles_init(dev_priv); if (ret) goto err_mem_regions; ret = i915_ggtt_enable_hw(dev_priv); if (ret) { drm_err(&dev_priv->drm, "failed to enable GGTT\n"); goto err_mem_regions; } pci_set_master(pdev); /* On the 945G/GM, the chipset reports the MSI capability on the * integrated graphics even though the support isn't actually there * according to the published specs. It doesn't appear to function * correctly in testing on 945G. * This may be a side effect of MSI having been made available for PEG * and the registers being closely associated. * * According to chipset errata, on the 965GM, MSI interrupts may * be lost or delayed, and was defeatured. MSI interrupts seem to * get lost on g4x as well, and interrupt delivery seems to stay * properly dead afterwards. So we'll just disable them for all * pre-gen5 chipsets. * * dp aux and gmbus irq on gen4 seems to be able to generate legacy * interrupts even when in MSI mode. This results in spurious * interrupt warnings if the legacy irq no. is shared with another * device. The kernel then disables that interrupt source and so * prevents the other device from working properly. */ if (GRAPHICS_VER(dev_priv) >= 5) { if (pci_enable_msi(pdev) < 0) drm_dbg(&dev_priv->drm, "can't enable MSI"); } ret = intel_gvt_init(dev_priv); if (ret) goto err_msi; intel_opregion_setup(dev_priv); ret = i915_pcode_init(dev_priv); if (ret) goto err_msi; /* * Fill the dram structure to get the system dram info. This will be * used for memory latency calculation. */ intel_dram_detect(dev_priv); intel_bw_init_hw(dev_priv); return 0; err_msi: if (pdev->msi_enabled) pci_disable_msi(pdev); err_mem_regions: intel_memory_regions_driver_release(dev_priv); err_ggtt: i915_ggtt_driver_release(dev_priv); i915_gem_drain_freed_objects(dev_priv); i915_ggtt_driver_late_release(dev_priv); err_perf: i915_perf_fini(dev_priv); return ret; } /** * i915_driver_hw_remove - cleanup the setup done in i915_driver_hw_probe() * @dev_priv: device private */ static void i915_driver_hw_remove(struct drm_i915_private *dev_priv) { struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); i915_perf_fini(dev_priv); if (pdev->msi_enabled) pci_disable_msi(pdev); } /** * i915_driver_register - register the driver with the rest of the system * @dev_priv: device private * * Perform any steps necessary to make the driver available via kernel * internal or userspace interfaces. */ static void i915_driver_register(struct drm_i915_private *dev_priv) { struct drm_device *dev = &dev_priv->drm; struct intel_gt *gt; unsigned int i; i915_gem_driver_register(dev_priv); i915_pmu_register(dev_priv); intel_vgpu_register(dev_priv); /* Reveal our presence to userspace */ if (drm_dev_register(dev, 0)) { drm_err(&dev_priv->drm, "Failed to register driver for userspace access!\n"); return; } i915_debugfs_register(dev_priv); i915_setup_sysfs(dev_priv); /* Depends on sysfs having been initialized */ i915_perf_register(dev_priv); for_each_gt(gt, dev_priv, i) intel_gt_driver_register(gt); intel_display_driver_register(dev_priv); intel_power_domains_enable(dev_priv); intel_runtime_pm_enable(&dev_priv->runtime_pm); intel_register_dsm_handler(); if (i915_switcheroo_register(dev_priv)) drm_err(&dev_priv->drm, "Failed to register vga switcheroo!\n"); } /** * i915_driver_unregister - cleanup the registration done in i915_driver_regiser() * @dev_priv: device private */ static void i915_driver_unregister(struct drm_i915_private *dev_priv) { struct intel_gt *gt; unsigned int i; i915_switcheroo_unregister(dev_priv); intel_unregister_dsm_handler(); intel_runtime_pm_disable(&dev_priv->runtime_pm); intel_power_domains_disable(dev_priv); intel_display_driver_unregister(dev_priv); for_each_gt(gt, dev_priv, i) intel_gt_driver_unregister(gt); i915_perf_unregister(dev_priv); i915_pmu_unregister(dev_priv); i915_teardown_sysfs(dev_priv); drm_dev_unplug(&dev_priv->drm); i915_gem_driver_unregister(dev_priv); } void i915_print_iommu_status(struct drm_i915_private *i915, struct drm_printer *p) { drm_printf(p, "iommu: %s\n", str_enabled_disabled(i915_vtd_active(i915))); } static void i915_welcome_messages(struct drm_i915_private *dev_priv) { if (drm_debug_enabled(DRM_UT_DRIVER)) { struct drm_printer p = drm_debug_printer("i915 device info:"); struct intel_gt *gt; unsigned int i; drm_printf(&p, "pciid=0x%04x rev=0x%02x platform=%s (subplatform=0x%x) gen=%i\n", INTEL_DEVID(dev_priv), INTEL_REVID(dev_priv), intel_platform_name(INTEL_INFO(dev_priv)->platform), intel_subplatform(RUNTIME_INFO(dev_priv), INTEL_INFO(dev_priv)->platform), GRAPHICS_VER(dev_priv)); intel_device_info_print(INTEL_INFO(dev_priv), RUNTIME_INFO(dev_priv), &p); i915_print_iommu_status(dev_priv, &p); for_each_gt(gt, dev_priv, i) intel_gt_info_print(>->info, &p); } if (IS_ENABLED(CONFIG_DRM_I915_DEBUG)) drm_info(&dev_priv->drm, "DRM_I915_DEBUG enabled\n"); if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)) drm_info(&dev_priv->drm, "DRM_I915_DEBUG_GEM enabled\n"); if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)) drm_info(&dev_priv->drm, "DRM_I915_DEBUG_RUNTIME_PM enabled\n"); } static struct drm_i915_private * i915_driver_create(struct pci_dev *pdev, const struct pci_device_id *ent) { const struct intel_device_info *match_info = (struct intel_device_info *)ent->driver_data; struct intel_device_info *device_info; struct intel_runtime_info *runtime; struct drm_i915_private *i915; i915 = devm_drm_dev_alloc(&pdev->dev, &i915_drm_driver, struct drm_i915_private, drm); if (IS_ERR(i915)) return i915; pci_set_drvdata(pdev, i915); /* Device parameters start as a copy of module parameters. */ i915_params_copy(&i915->params, &i915_modparams); /* Setup the write-once "constant" device info */ device_info = mkwrite_device_info(i915); memcpy(device_info, match_info, sizeof(*device_info)); /* Initialize initial runtime info from static const data and pdev. */ runtime = RUNTIME_INFO(i915); memcpy(runtime, &INTEL_INFO(i915)->__runtime, sizeof(*runtime)); runtime->device_id = pdev->device; return i915; } /** * i915_driver_probe - setup chip and create an initial config * @pdev: PCI device * @ent: matching PCI ID entry * * The driver probe routine has to do several things: * - drive output discovery via intel_modeset_init() * - initialize the memory manager * - allocate initial config memory * - setup the DRM framebuffer with the allocated memory */ int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct drm_i915_private *i915; int ret; i915 = i915_driver_create(pdev, ent); if (IS_ERR(i915)) return PTR_ERR(i915); /* Disable nuclear pageflip by default on pre-ILK */ if (!i915->params.nuclear_pageflip && DISPLAY_VER(i915) < 5) i915->drm.driver_features &= ~DRIVER_ATOMIC; ret = pci_enable_device(pdev); if (ret) goto out_fini; ret = i915_driver_early_probe(i915); if (ret < 0) goto out_pci_disable; disable_rpm_wakeref_asserts(&i915->runtime_pm); intel_vgpu_detect(i915); ret = intel_gt_probe_all(i915); if (ret < 0) goto out_runtime_pm_put; ret = i915_driver_mmio_probe(i915); if (ret < 0) goto out_tiles_cleanup; ret = i915_driver_hw_probe(i915); if (ret < 0) goto out_cleanup_mmio; ret = intel_modeset_init_noirq(i915); if (ret < 0) goto out_cleanup_hw; ret = intel_irq_install(i915); if (ret) goto out_cleanup_modeset; ret = intel_modeset_init_nogem(i915); if (ret) goto out_cleanup_irq; ret = i915_gem_init(i915); if (ret) goto out_cleanup_modeset2; ret = intel_modeset_init(i915); if (ret) goto out_cleanup_gem; i915_driver_register(i915); enable_rpm_wakeref_asserts(&i915->runtime_pm); i915_welcome_messages(i915); i915->do_release = true; return 0; out_cleanup_gem: i915_gem_suspend(i915); i915_gem_driver_remove(i915); i915_gem_driver_release(i915); out_cleanup_modeset2: /* FIXME clean up the error path */ intel_modeset_driver_remove(i915); intel_irq_uninstall(i915); intel_modeset_driver_remove_noirq(i915); goto out_cleanup_modeset; out_cleanup_irq: intel_irq_uninstall(i915); out_cleanup_modeset: intel_modeset_driver_remove_nogem(i915); out_cleanup_hw: i915_driver_hw_remove(i915); intel_memory_regions_driver_release(i915); i915_ggtt_driver_release(i915); i915_gem_drain_freed_objects(i915); i915_ggtt_driver_late_release(i915); out_cleanup_mmio: i915_driver_mmio_release(i915); out_tiles_cleanup: intel_gt_release_all(i915); out_runtime_pm_put: enable_rpm_wakeref_asserts(&i915->runtime_pm); i915_driver_late_release(i915); out_pci_disable: pci_disable_device(pdev); out_fini: i915_probe_error(i915, "Device initialization failed (%d)\n", ret); return ret; } void i915_driver_remove(struct drm_i915_private *i915) { intel_wakeref_t wakeref; wakeref = intel_runtime_pm_get(&i915->runtime_pm); i915_driver_unregister(i915); /* Flush any external code that still may be under the RCU lock */ synchronize_rcu(); i915_gem_suspend(i915); intel_gvt_driver_remove(i915); intel_modeset_driver_remove(i915); intel_irq_uninstall(i915); intel_modeset_driver_remove_noirq(i915); i915_reset_error_state(i915); i915_gem_driver_remove(i915); intel_modeset_driver_remove_nogem(i915); i915_driver_hw_remove(i915); intel_runtime_pm_put(&i915->runtime_pm, wakeref); } static void i915_driver_release(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; intel_wakeref_t wakeref; if (!dev_priv->do_release) return; wakeref = intel_runtime_pm_get(rpm); i915_gem_driver_release(dev_priv); intel_memory_regions_driver_release(dev_priv); i915_ggtt_driver_release(dev_priv); i915_gem_drain_freed_objects(dev_priv); i915_ggtt_driver_late_release(dev_priv); i915_driver_mmio_release(dev_priv); intel_runtime_pm_put(rpm, wakeref); intel_runtime_pm_driver_release(rpm); i915_driver_late_release(dev_priv); } static int i915_driver_open(struct drm_device *dev, struct drm_file *file) { struct drm_i915_private *i915 = to_i915(dev); int ret; ret = i915_gem_open(i915, file); if (ret) return ret; return 0; } /** * i915_driver_lastclose - clean up after all DRM clients have exited * @dev: DRM device * * Take care of cleaning up after all DRM clients have exited. In the * mode setting case, we want to restore the kernel's initial mode (just * in case the last client left us in a bad state). * * Additionally, in the non-mode setting case, we'll tear down the GTT * and DMA structures, since the kernel won't be using them, and clea * up any GEM state. */ static void i915_driver_lastclose(struct drm_device *dev) { intel_fbdev_restore_mode(dev); vga_switcheroo_process_delayed_switch(); } static void i915_driver_postclose(struct drm_device *dev, struct drm_file *file) { struct drm_i915_file_private *file_priv = file->driver_priv; i915_gem_context_close(file); i915_drm_client_put(file_priv->client); kfree_rcu(file_priv, rcu); /* Catch up with all the deferred frees from "this" client */ i915_gem_flush_free_objects(to_i915(dev)); } static void intel_suspend_encoders(struct drm_i915_private *dev_priv) { struct drm_device *dev = &dev_priv->drm; struct intel_encoder *encoder; if (!HAS_DISPLAY(dev_priv)) return; drm_modeset_lock_all(dev); for_each_intel_encoder(dev, encoder) if (encoder->suspend) encoder->suspend(encoder); drm_modeset_unlock_all(dev); } static void intel_shutdown_encoders(struct drm_i915_private *dev_priv) { struct drm_device *dev = &dev_priv->drm; struct intel_encoder *encoder; if (!HAS_DISPLAY(dev_priv)) return; drm_modeset_lock_all(dev); for_each_intel_encoder(dev, encoder) if (encoder->shutdown) encoder->shutdown(encoder); drm_modeset_unlock_all(dev); } void i915_driver_shutdown(struct drm_i915_private *i915) { disable_rpm_wakeref_asserts(&i915->runtime_pm); intel_runtime_pm_disable(&i915->runtime_pm); intel_power_domains_disable(i915); if (HAS_DISPLAY(i915)) { drm_kms_helper_poll_disable(&i915->drm); drm_atomic_helper_shutdown(&i915->drm); } intel_dp_mst_suspend(i915); intel_runtime_pm_disable_interrupts(i915); intel_hpd_cancel_work(i915); intel_suspend_encoders(i915); intel_shutdown_encoders(i915); intel_dmc_ucode_suspend(i915); i915_gem_suspend(i915); /* * The only requirement is to reboot with display DC states disabled, * for now leaving all display power wells in the INIT power domain * enabled. * * TODO: * - unify the pci_driver::shutdown sequence here with the * pci_driver.driver.pm.poweroff,poweroff_late sequence. * - unify the driver remove and system/runtime suspend sequences with * the above unified shutdown/poweroff sequence. */ intel_power_domains_driver_remove(i915); enable_rpm_wakeref_asserts(&i915->runtime_pm); intel_runtime_pm_driver_release(&i915->runtime_pm); } static bool suspend_to_idle(struct drm_i915_private *dev_priv) { #if IS_ENABLED(CONFIG_ACPI_SLEEP) if (acpi_target_system_state() < ACPI_STATE_S3) return true; #endif return false; } static int i915_drm_prepare(struct drm_device *dev) { struct drm_i915_private *i915 = to_i915(dev); /* * NB intel_display_suspend() may issue new requests after we've * ostensibly marked the GPU as ready-to-sleep here. We need to * split out that work and pull it forward so that after point, * the GPU is not woken again. */ return i915_gem_backup_suspend(i915); } static int i915_drm_suspend(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); pci_power_t opregion_target_state; disable_rpm_wakeref_asserts(&dev_priv->runtime_pm); /* We do a lot of poking in a lot of registers, make sure they work * properly. */ intel_power_domains_disable(dev_priv); if (HAS_DISPLAY(dev_priv)) drm_kms_helper_poll_disable(dev); pci_save_state(pdev); intel_display_suspend(dev); intel_dp_mst_suspend(dev_priv); intel_runtime_pm_disable_interrupts(dev_priv); intel_hpd_cancel_work(dev_priv); intel_suspend_encoders(dev_priv); intel_suspend_hw(dev_priv); /* Must be called before GGTT is suspended. */ intel_dpt_suspend(dev_priv); i915_ggtt_suspend(to_gt(dev_priv)->ggtt); i915_save_display(dev_priv); opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold; intel_opregion_suspend(dev_priv, opregion_target_state); intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true); dev_priv->suspend_count++; intel_dmc_ucode_suspend(dev_priv); enable_rpm_wakeref_asserts(&dev_priv->runtime_pm); i915_gem_drain_freed_objects(dev_priv); return 0; } static enum i915_drm_suspend_mode get_suspend_mode(struct drm_i915_private *dev_priv, bool hibernate) { if (hibernate) return I915_DRM_SUSPEND_HIBERNATE; if (suspend_to_idle(dev_priv)) return I915_DRM_SUSPEND_IDLE; return I915_DRM_SUSPEND_MEM; } static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation) { struct drm_i915_private *dev_priv = to_i915(dev); struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; struct intel_gt *gt; int ret, i; disable_rpm_wakeref_asserts(rpm); i915_gem_suspend_late(dev_priv); for_each_gt(gt, dev_priv, i) intel_uncore_suspend(gt->uncore); intel_power_domains_suspend(dev_priv, get_suspend_mode(dev_priv, hibernation)); intel_display_power_suspend_late(dev_priv); ret = vlv_suspend_complete(dev_priv); if (ret) { drm_err(&dev_priv->drm, "Suspend complete failed: %d\n", ret); intel_power_domains_resume(dev_priv); goto out; } pci_disable_device(pdev); /* * During hibernation on some platforms the BIOS may try to access * the device even though it's already in D3 and hang the machine. So * leave the device in D0 on those platforms and hope the BIOS will * power down the device properly. The issue was seen on multiple old * GENs with different BIOS vendors, so having an explicit blacklist * is inpractical; apply the workaround on everything pre GEN6. The * platforms where the issue was seen: * Lenovo Thinkpad X301, X61s, X60, T60, X41 * Fujitsu FSC S7110 * Acer Aspire 1830T */ if (!(hibernation && GRAPHICS_VER(dev_priv) < 6)) pci_set_power_state(pdev, PCI_D3hot); out: enable_rpm_wakeref_asserts(rpm); if (!dev_priv->uncore.user_forcewake_count) intel_runtime_pm_driver_release(rpm); return ret; } int i915_driver_suspend_switcheroo(struct drm_i915_private *i915, pm_message_t state) { int error; if (drm_WARN_ON_ONCE(&i915->drm, state.event != PM_EVENT_SUSPEND && state.event != PM_EVENT_FREEZE)) return -EINVAL; if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) return 0; error = i915_drm_suspend(&i915->drm); if (error) return error; return i915_drm_suspend_late(&i915->drm, false); } static int i915_drm_resume(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); int ret; disable_rpm_wakeref_asserts(&dev_priv->runtime_pm); ret = i915_pcode_init(dev_priv); if (ret) return ret; sanitize_gpu(dev_priv); ret = i915_ggtt_enable_hw(dev_priv); if (ret) drm_err(&dev_priv->drm, "failed to re-enable GGTT\n"); i915_ggtt_resume(to_gt(dev_priv)->ggtt); /* Must be called after GGTT is resumed. */ intel_dpt_resume(dev_priv); intel_dmc_ucode_resume(dev_priv); i915_restore_display(dev_priv); intel_pps_unlock_regs_wa(dev_priv); intel_init_pch_refclk(dev_priv); /* * Interrupts have to be enabled before any batches are run. If not the * GPU will hang. i915_gem_init_hw() will initiate batches to * update/restore the context. * * drm_mode_config_reset() needs AUX interrupts. * * Modeset enabling in intel_modeset_init_hw() also needs working * interrupts. */ intel_runtime_pm_enable_interrupts(dev_priv); if (HAS_DISPLAY(dev_priv)) drm_mode_config_reset(dev); i915_gem_resume(dev_priv); intel_modeset_init_hw(dev_priv); intel_init_clock_gating(dev_priv); intel_hpd_init(dev_priv); /* MST sideband requires HPD interrupts enabled */ intel_dp_mst_resume(dev_priv); intel_display_resume(dev); intel_hpd_poll_disable(dev_priv); if (HAS_DISPLAY(dev_priv)) drm_kms_helper_poll_enable(dev); intel_opregion_resume(dev_priv); intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false); intel_power_domains_enable(dev_priv); intel_gvt_resume(dev_priv); enable_rpm_wakeref_asserts(&dev_priv->runtime_pm); return 0; } static int i915_drm_resume_early(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); struct intel_gt *gt; int ret, i; /* * We have a resume ordering issue with the snd-hda driver also * requiring our device to be power up. Due to the lack of a * parent/child relationship we currently solve this with an early * resume hook. * * FIXME: This should be solved with a special hdmi sink device or * similar so that power domains can be employed. */ /* * Note that we need to set the power state explicitly, since we * powered off the device during freeze and the PCI core won't power * it back up for us during thaw. Powering off the device during * freeze is not a hard requirement though, and during the * suspend/resume phases the PCI core makes sure we get here with the * device powered on. So in case we change our freeze logic and keep * the device powered we can also remove the following set power state * call. */ ret = pci_set_power_state(pdev, PCI_D0); if (ret) { drm_err(&dev_priv->drm, "failed to set PCI D0 power state (%d)\n", ret); return ret; } /* * Note that pci_enable_device() first enables any parent bridge * device and only then sets the power state for this device. The * bridge enabling is a nop though, since bridge devices are resumed * first. The order of enabling power and enabling the device is * imposed by the PCI core as described above, so here we preserve the * same order for the freeze/thaw phases. * * TODO: eventually we should remove pci_disable_device() / * pci_enable_enable_device() from suspend/resume. Due to how they * depend on the device enable refcount we can't anyway depend on them * disabling/enabling the device. */ if (pci_enable_device(pdev)) return -EIO; pci_set_master(pdev); disable_rpm_wakeref_asserts(&dev_priv->runtime_pm); ret = vlv_resume_prepare(dev_priv, false); if (ret) drm_err(&dev_priv->drm, "Resume prepare failed: %d, continuing anyway\n", ret); for_each_gt(gt, dev_priv, i) { intel_uncore_resume_early(gt->uncore); intel_gt_check_and_clear_faults(gt); } intel_display_power_resume_early(dev_priv); intel_power_domains_resume(dev_priv); enable_rpm_wakeref_asserts(&dev_priv->runtime_pm); return ret; } int i915_driver_resume_switcheroo(struct drm_i915_private *i915) { int ret; if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) return 0; ret = i915_drm_resume_early(&i915->drm); if (ret) return ret; return i915_drm_resume(&i915->drm); } static int i915_pm_prepare(struct device *kdev) { struct drm_i915_private *i915 = kdev_to_i915(kdev); if (!i915) { dev_err(kdev, "DRM not initialized, aborting suspend.\n"); return -ENODEV; } if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) return 0; return i915_drm_prepare(&i915->drm); } static int i915_pm_suspend(struct device *kdev) { struct drm_i915_private *i915 = kdev_to_i915(kdev); if (!i915) { dev_err(kdev, "DRM not initialized, aborting suspend.\n"); return -ENODEV; } i915_ggtt_mark_pte_lost(i915, false); if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) return 0; return i915_drm_suspend(&i915->drm); } static int i915_pm_suspend_late(struct device *kdev) { struct drm_i915_private *i915 = kdev_to_i915(kdev); /* * We have a suspend ordering issue with the snd-hda driver also * requiring our device to be power up. Due to the lack of a * parent/child relationship we currently solve this with an late * suspend hook. * * FIXME: This should be solved with a special hdmi sink device or * similar so that power domains can be employed. */ if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) return 0; return i915_drm_suspend_late(&i915->drm, false); } static int i915_pm_poweroff_late(struct device *kdev) { struct drm_i915_private *i915 = kdev_to_i915(kdev); if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) return 0; return i915_drm_suspend_late(&i915->drm, true); } static int i915_pm_resume_early(struct device *kdev) { struct drm_i915_private *i915 = kdev_to_i915(kdev); if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) return 0; return i915_drm_resume_early(&i915->drm); } static int i915_pm_resume(struct device *kdev) { struct drm_i915_private *i915 = kdev_to_i915(kdev); if (i915->drm.switch_power_state == DRM_SWITCH_POWER_OFF) return 0; /* * If IRST is enabled, or if we can't detect whether it's enabled, * then we must assume we lost the GGTT page table entries, since * they are not retained if IRST decided to enter S4. */ if (!IS_ENABLED(CONFIG_ACPI) || acpi_dev_present(irst_name, NULL, -1)) i915_ggtt_mark_pte_lost(i915, true); return i915_drm_resume(&i915->drm); } /* freeze: before creating the hibernation_image */ static int i915_pm_freeze(struct device *kdev) { struct drm_i915_private *i915 = kdev_to_i915(kdev); int ret; if (i915->drm.switch_power_state != DRM_SWITCH_POWER_OFF) { ret = i915_drm_suspend(&i915->drm); if (ret) return ret; } ret = i915_gem_freeze(i915); if (ret) return ret; return 0; } static int i915_pm_freeze_late(struct device *kdev) { struct drm_i915_private *i915 = kdev_to_i915(kdev); int ret; if (i915->drm.switch_power_state != DRM_SWITCH_POWER_OFF) { ret = i915_drm_suspend_late(&i915->drm, true); if (ret) return ret; } ret = i915_gem_freeze_late(i915); if (ret) return ret; return 0; } /* thaw: called after creating the hibernation image, but before turning off. */ static int i915_pm_thaw_early(struct device *kdev) { return i915_pm_resume_early(kdev); } static int i915_pm_thaw(struct device *kdev) { return i915_pm_resume(kdev); } /* restore: called after loading the hibernation image. */ static int i915_pm_restore_early(struct device *kdev) { return i915_pm_resume_early(kdev); } static int i915_pm_restore(struct device *kdev) { struct drm_i915_private *i915 = kdev_to_i915(kdev); i915_ggtt_mark_pte_lost(i915, true); return i915_pm_resume(kdev); } static int intel_runtime_suspend(struct device *kdev) { struct drm_i915_private *dev_priv = kdev_to_i915(kdev); struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); struct pci_dev *root_pdev; struct intel_gt *gt; int ret, i; if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv))) return -ENODEV; drm_dbg(&dev_priv->drm, "Suspending device\n"); disable_rpm_wakeref_asserts(rpm); /* * We are safe here against re-faults, since the fault handler takes * an RPM reference. */ i915_gem_runtime_suspend(dev_priv); for_each_gt(gt, dev_priv, i) intel_gt_runtime_suspend(gt); intel_runtime_pm_disable_interrupts(dev_priv); for_each_gt(gt, dev_priv, i) intel_uncore_suspend(gt->uncore); intel_display_power_suspend(dev_priv); ret = vlv_suspend_complete(dev_priv); if (ret) { drm_err(&dev_priv->drm, "Runtime suspend failed, disabling it (%d)\n", ret); intel_uncore_runtime_resume(&dev_priv->uncore); intel_runtime_pm_enable_interrupts(dev_priv); for_each_gt(gt, dev_priv, i) intel_gt_runtime_resume(gt); enable_rpm_wakeref_asserts(rpm); return ret; } enable_rpm_wakeref_asserts(rpm); intel_runtime_pm_driver_release(rpm); if (intel_uncore_arm_unclaimed_mmio_detection(&dev_priv->uncore)) drm_err(&dev_priv->drm, "Unclaimed access detected prior to suspending\n"); /* * FIXME: Temporary hammer to avoid freezing the machine on our DGFX * This should be totally removed when we handle the pci states properly * on runtime PM. */ root_pdev = pcie_find_root_port(pdev); if (root_pdev) pci_d3cold_disable(root_pdev); rpm->suspended = true; /* * FIXME: We really should find a document that references the arguments * used below! */ if (IS_BROADWELL(dev_priv)) { /* * On Broadwell, if we use PCI_D1 the PCH DDI ports will stop * being detected, and the call we do at intel_runtime_resume() * won't be able to restore them. Since PCI_D3hot matches the * actual specification and appears to be working, use it. */ intel_opregion_notify_adapter(dev_priv, PCI_D3hot); } else { /* * current versions of firmware which depend on this opregion * notification have repurposed the D1 definition to mean * "runtime suspended" vs. what you would normally expect (D3) * to distinguish it from notifications that might be sent via * the suspend path. */ intel_opregion_notify_adapter(dev_priv, PCI_D1); } assert_forcewakes_inactive(&dev_priv->uncore); if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) intel_hpd_poll_enable(dev_priv); drm_dbg(&dev_priv->drm, "Device suspended\n"); return 0; } static int intel_runtime_resume(struct device *kdev) { struct drm_i915_private *dev_priv = kdev_to_i915(kdev); struct intel_runtime_pm *rpm = &dev_priv->runtime_pm; struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); struct pci_dev *root_pdev; struct intel_gt *gt; int ret, i; if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv))) return -ENODEV; drm_dbg(&dev_priv->drm, "Resuming device\n"); drm_WARN_ON_ONCE(&dev_priv->drm, atomic_read(&rpm->wakeref_count)); disable_rpm_wakeref_asserts(rpm); intel_opregion_notify_adapter(dev_priv, PCI_D0); rpm->suspended = false; root_pdev = pcie_find_root_port(pdev); if (root_pdev) pci_d3cold_enable(root_pdev); if (intel_uncore_unclaimed_mmio(&dev_priv->uncore)) drm_dbg(&dev_priv->drm, "Unclaimed access during suspend, bios?\n"); intel_display_power_resume(dev_priv); ret = vlv_resume_prepare(dev_priv, true); for_each_gt(gt, dev_priv, i) intel_uncore_runtime_resume(gt->uncore); intel_runtime_pm_enable_interrupts(dev_priv); /* * No point of rolling back things in case of an error, as the best * we can do is to hope that things will still work (and disable RPM). */ for_each_gt(gt, dev_priv, i) intel_gt_runtime_resume(gt); /* * On VLV/CHV display interrupts are part of the display * power well, so hpd is reinitialized from there. For * everyone else do it here. */ if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) { intel_hpd_init(dev_priv); intel_hpd_poll_disable(dev_priv); } skl_watermark_ipc_update(dev_priv); enable_rpm_wakeref_asserts(rpm); if (ret) drm_err(&dev_priv->drm, "Runtime resume failed, disabling it (%d)\n", ret); else drm_dbg(&dev_priv->drm, "Device resumed\n"); return ret; } const struct dev_pm_ops i915_pm_ops = { /* * S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND, * PMSG_RESUME] */ .prepare = i915_pm_prepare, .suspend = i915_pm_suspend, .suspend_late = i915_pm_suspend_late, .resume_early = i915_pm_resume_early, .resume = i915_pm_resume, /* * S4 event handlers * @freeze, @freeze_late : called (1) before creating the * hibernation image [PMSG_FREEZE] and * (2) after rebooting, before restoring * the image [PMSG_QUIESCE] * @thaw, @thaw_early : called (1) after creating the hibernation * image, before writing it [PMSG_THAW] * and (2) after failing to create or * restore the image [PMSG_RECOVER] * @poweroff, @poweroff_late: called after writing the hibernation * image, before rebooting [PMSG_HIBERNATE] * @restore, @restore_early : called after rebooting and restoring the * hibernation image [PMSG_RESTORE] */ .freeze = i915_pm_freeze, .freeze_late = i915_pm_freeze_late, .thaw_early = i915_pm_thaw_early, .thaw = i915_pm_thaw, .poweroff = i915_pm_suspend, .poweroff_late = i915_pm_poweroff_late, .restore_early = i915_pm_restore_early, .restore = i915_pm_restore, /* S0ix (via runtime suspend) event handlers */ .runtime_suspend = intel_runtime_suspend, .runtime_resume = intel_runtime_resume, }; static const struct file_operations i915_driver_fops = { .owner = THIS_MODULE, .open = drm_open, .release = drm_release_noglobal, .unlocked_ioctl = drm_ioctl, .mmap = i915_gem_mmap, .poll = drm_poll, .read = drm_read, .compat_ioctl = i915_ioc32_compat_ioctl, .llseek = noop_llseek, #ifdef CONFIG_PROC_FS .show_fdinfo = i915_drm_client_fdinfo, #endif }; static int i915_gem_reject_pin_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { return -ENODEV; } static const struct drm_ioctl_desc i915_ioctls[] = { DRM_IOCTL_DEF_DRV(I915_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_FLUSH, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_FLIP, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_SETPARAM, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GEM_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, drm_invalid_op, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2_WR, i915_gem_execbuffer2_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_CREATE_EXT, i915_gem_create_ext_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_OFFSET, i915_gem_mmap_offset_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id_ioctl, 0), DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image_ioctl, DRM_MASTER), DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs_ioctl, DRM_MASTER), DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey_ioctl, DRM_MASTER), DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER), DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE_EXT, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS, i915_gem_context_reset_stats_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_USERPTR, i915_gem_userptr_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM, i915_gem_context_getparam_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM, i915_gem_context_setparam_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_PERF_OPEN, i915_perf_open_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_PERF_ADD_CONFIG, i915_perf_add_config_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_PERF_REMOVE_CONFIG, i915_perf_remove_config_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_QUERY, i915_query_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_VM_CREATE, i915_gem_vm_create_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_VM_DESTROY, i915_gem_vm_destroy_ioctl, DRM_RENDER_ALLOW), }; /* * Interface history: * * 1.1: Original. * 1.2: Add Power Management * 1.3: Add vblank support * 1.4: Fix cmdbuffer path, add heap destroy * 1.5: Add vblank pipe configuration * 1.6: - New ioctl for scheduling buffer swaps on vertical blank * - Support vertical blank on secondary display pipe */ #define DRIVER_MAJOR 1 #define DRIVER_MINOR 6 #define DRIVER_PATCHLEVEL 0 static const struct drm_driver i915_drm_driver = { /* Don't use MTRRs here; the Xserver or userspace app should * deal with them for Intel hardware. */ .driver_features = DRIVER_GEM | DRIVER_RENDER | DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_SYNCOBJ | DRIVER_SYNCOBJ_TIMELINE, .release = i915_driver_release, .open = i915_driver_open, .lastclose = i915_driver_lastclose, .postclose = i915_driver_postclose, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_import = i915_gem_prime_import, .dumb_create = i915_gem_dumb_create, .dumb_map_offset = i915_gem_dumb_mmap_offset, .ioctls = i915_ioctls, .num_ioctls = ARRAY_SIZE(i915_ioctls), .fops = &i915_driver_fops, .name = DRIVER_NAME, .desc = DRIVER_DESC, .date = DRIVER_DATE, .major = DRIVER_MAJOR, .minor = DRIVER_MINOR, .patchlevel = DRIVER_PATCHLEVEL, };