--- /dev/null
- __intel_gt_reset(&i915->gt, ALL_ENGINES);
+/* 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/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 "gem/i915_gem_context.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_debugfs.h"
+#include "i915_driver.h"
+#include "i915_drv.h"
+#include "i915_ioc32.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_vgpu.h"
+#include "intel_dram.h"
+#include "intel_gvt.h"
+#include "intel_memory_region.h"
+#include "intel_pcode.h"
+#include "intel_pm.h"
+#include "intel_region_ttm.h"
+#include "vlv_suspend.h"
+
+static const struct drm_driver i915_drm_driver;
+
+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 0;
+}
+
+/* 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->hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0);
+ if (dev_priv->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->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)
- intel_uncore_init_early(&dev_priv->uncore, dev_priv);
++ __intel_gt_reset(to_gt(i915), 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_gt_init_early(to_gt(dev_priv), dev_priv);
+ intel_uncore_mmio_debug_init_early(&dev_priv->mmio_debug);
- intel_gt_init_early(&dev_priv->gt, dev_priv);
++ intel_uncore_init_early(&dev_priv->uncore, to_gt(dev_priv));
+
+ spin_lock_init(&dev_priv->irq_lock);
+ spin_lock_init(&dev_priv->gpu_error.lock);
+ mutex_init(&dev_priv->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->audio.mutex);
+ mutex_init(&dev_priv->wm.wm_mutex);
+ mutex_init(&dev_priv->pps_mutex);
+ mutex_init(&dev_priv->hdcp_comp_mutex);
+
+ 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);
+
- intel_gt_driver_late_release(&dev_priv->gt);
++ __intel_gt_init_early(to_gt(dev_priv), 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(&dev_priv->gt);
++ intel_gt_driver_late_release(to_gt(dev_priv));
+ 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);
- ret = intel_gt_init_mmio(&dev_priv->gt);
++ intel_gt_driver_late_release(to_gt(dev_priv));
+ 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)
+{
+ int ret;
+
+ if (i915_inject_probe_failure(dev_priv))
+ return -ENODEV;
+
+ ret = i915_get_bridge_dev(dev_priv);
+ if (ret < 0)
+ return ret;
+
+ ret = intel_uncore_setup_mmio(&dev_priv->uncore);
+ if (ret < 0)
+ goto err_bridge;
+
+ ret = intel_uncore_init_mmio(&dev_priv->uncore);
+ if (ret)
+ goto err_mmio;
+
+ /* Try to make sure MCHBAR is enabled before poking at it */
+ intel_setup_mchbar(dev_priv);
+ intel_device_info_runtime_init(dev_priv);
+
- intel_gt_init_hw_early(&dev_priv->gt, &dev_priv->ggtt);
++ ret = intel_gt_init_mmio(to_gt(dev_priv));
+ 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);
+ intel_uncore_fini_mmio(&dev_priv->uncore);
+err_mmio:
+ intel_uncore_cleanup_mmio(&dev_priv->uncore);
+err_bridge:
+ pci_dev_put(dev_priv->bridge_dev);
+
+ 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);
+ intel_uncore_fini_mmio(&dev_priv->uncore);
+ intel_uncore_cleanup_mmio(&dev_priv->uncore);
+ pci_dev_put(dev_priv->bridge_dev);
+}
+
+static void intel_sanitize_options(struct drm_i915_private *dev_priv)
+{
+ intel_gvt_sanitize_options(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;
+}
+
+/**
+ * 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;
+ }
+ }
+
+ intel_sanitize_options(dev_priv);
+
+ /* 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 = 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_probe_lmem(&dev_priv->gt);
++ intel_gt_init_hw_early(to_gt(dev_priv), &dev_priv->ggtt);
+
- intel_gt_driver_register(&dev_priv->gt);
++ ret = intel_gt_probe_lmem(to_gt(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 = intel_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;
+
+ 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);
+
- intel_gt_driver_unregister(&dev_priv->gt);
++ intel_gt_driver_register(to_gt(dev_priv));
+
+ 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)
+{
+ 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);
+
- intel_gt_info_print(&dev_priv->gt.info, &p);
++ intel_gt_driver_unregister(to_gt(dev_priv));
+
+ 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", enableddisabled(intel_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:");
+
+ 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_static(INTEL_INFO(dev_priv), &p);
+ intel_device_info_print_runtime(RUNTIME_INFO(dev_priv), &p);
+ i915_print_iommu_status(dev_priv, &p);
- intel_gt_check_and_clear_faults(&dev_priv->gt);
++ intel_gt_info_print(&to_gt(dev_priv)->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 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));
+ RUNTIME_INFO(i915)->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)
+{
+ const struct intel_device_info *match_info =
+ (struct intel_device_info *)ent->driver_data;
+ 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 && match_info->graphics.ver < 5)
+ i915->drm.driver_features &= ~DRIVER_ATOMIC;
+
+ /*
+ * Check if we support fake LMEM -- for now we only unleash this for
+ * the live selftests(test-and-exit).
+ */
+#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
+ if (IS_ENABLED(CONFIG_DRM_I915_UNSTABLE_FAKE_LMEM)) {
+ if (GRAPHICS_VER(i915) >= 9 && i915_selftest.live < 0 &&
+ i915->params.fake_lmem_start) {
+ mkwrite_device_info(i915)->memory_regions =
+ REGION_SMEM | REGION_LMEM | REGION_STOLEN_SMEM;
+ GEM_BUG_ON(!HAS_LMEM(i915));
+ }
+ }
+#endif
+
+ 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 = 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)
+{
+ disable_rpm_wakeref_asserts(&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);
+
+ enable_rpm_wakeref_asserts(&i915->runtime_pm);
+}
+
+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;
+
+ if (!dev_priv->do_release)
+ return;
+
+ disable_rpm_wakeref_asserts(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);
+
+ enable_rpm_wakeref_asserts(rpm);
+ 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)
+{
+ struct drm_i915_private *i915 = to_i915(dev);
+
+ intel_fbdev_restore_mode(dev);
+
+ if (HAS_DISPLAY(i915))
+ 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);
+
+ 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);
+
+ i915_gem_suspend(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);
+
+ /*
+ * 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(&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);
+
+ 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;
+ int ret;
+
+ disable_rpm_wakeref_asserts(rpm);
+
+ i915_gem_suspend_late(dev_priv);
+
+ intel_uncore_suspend(&dev_priv->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;
+ }
+
+ /*
+ * 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 and on s2idle cases.
+ */
+ if (suspend_to_idle(dev_priv))
+ pci_d3cold_disable(pdev);
+
+ 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 = intel_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(&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);
+ int ret;
+
+ /*
+ * 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);
+
+ pci_d3cold_enable(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);
+
+ intel_uncore_resume_early(&dev_priv->uncore);
+
- intel_gt_runtime_suspend(&dev_priv->gt);
++ intel_gt_check_and_clear_faults(to_gt(dev_priv));
+
+ 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;
+ }
+
+ 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;
+
+ 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)
+{
+ 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);
+ int ret;
+
+ if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv)))
+ return -ENODEV;
+
+ drm_dbg_kms(&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);
+
- intel_gt_runtime_resume(&dev_priv->gt);
++ intel_gt_runtime_suspend(to_gt(dev_priv));
+
+ intel_runtime_pm_disable_interrupts(dev_priv);
+
+ intel_uncore_suspend(&dev_priv->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);
+
- intel_gt_runtime_resume(&dev_priv->gt);
++ intel_gt_runtime_resume(to_gt(dev_priv));
+
+ 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 and on s2idle cases.
+ */
+ pci_d3cold_disable(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_kms(&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);
+ int ret;
+
+ if (drm_WARN_ON_ONCE(&dev_priv->drm, !HAS_RUNTIME_PM(dev_priv)))
+ return -ENODEV;
+
+ drm_dbg_kms(&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;
+ pci_d3cold_enable(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);
+
+ intel_uncore_runtime_resume(&dev_priv->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).
+ */
++ intel_gt_runtime_resume(to_gt(dev_priv));
+
+ /*
+ * 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);
+ }
+
+ intel_enable_ipc(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_kms(&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,
+};
+
+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),
+};
+
+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,
+};
projects / linux-block.git / commitdiff