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Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_driver.c | 1940 |
1 files changed, 1940 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c new file mode 100644 index 000000000..be0ebed2a --- /dev/null +++ b/drivers/gpu/drm/i915/i915_driver.c @@ -0,0 +1,1940 @@ +/* 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 <linux/acpi.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/oom.h> +#include <linux/pci.h> +#include <linux/pm.h> +#include <linux/pm_runtime.h> +#include <linux/pnp.h> +#include <linux/slab.h> +#include <linux/string_helpers.h> +#include <linux/vga_switcheroo.h> +#include <linux/vt.h> + +#include <drm/drm_aperture.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_ioctl.h> +#include <drm/drm_managed.h> +#include <drm/drm_probe_helper.h> + +#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_runtime_pm_put; + + 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_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, +}; |