static int __i915_drm_thaw(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; int error = 0; i915_restore_state(dev); intel_opregion_setup(dev); /* KMS EnterVT equivalent */ if (drm_core_check_feature(dev, DRIVER_MODESET)) { intel_init_pch_refclk(dev); mutex_lock(&dev->struct_mutex); dev_priv->mm.suspended = 0; error = i915_gem_init_hw(dev); mutex_unlock(&dev->struct_mutex); /* We need working interrupts for modeset enabling ... */ drm_irq_install(dev); intel_modeset_init_hw(dev); intel_modeset_setup_hw_state(dev, false); /* * ... but also need to make sure that hotplug processing * doesn't cause havoc. Like in the driver load code we don't * bother with the tiny race here where we might loose hotplug * notifications. * */ intel_hpd_init(dev); dev_priv->enable_hotplug_processing = true; } intel_opregion_init(dev); /* * The console lock can be pretty contented on resume due * to all the printk activity. Try to keep it out of the hot * path of resume if possible. */ if (console_trylock()) { intel_fbdev_set_suspend(dev, 0); console_unlock(); } else { schedule_work(&dev_priv->console_resume_work); } mutex_lock(&dev_priv->modeset_restore_lock); dev_priv->modeset_restore = MODESET_DONE; mutex_unlock(&dev_priv->modeset_restore_lock); return error; }
static int i915_drm_thaw(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; int error = 0; if (drm_core_check_feature(dev, DRIVER_MODESET)) { mutex_lock(&dev->struct_mutex); i915_gem_restore_gtt_mappings(dev); mutex_unlock(&dev->struct_mutex); } i915_restore_state(dev); intel_opregion_setup(dev); /* KMS EnterVT equivalent */ if (drm_core_check_feature(dev, DRIVER_MODESET)) { if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) ironlake_init_pch_refclk(dev); mutex_lock(&dev->struct_mutex); dev_priv->mm.suspended = 0; error = i915_gem_init_hw(dev); mutex_unlock(&dev->struct_mutex); intel_modeset_init_hw(dev); drm_mode_config_reset(dev); drm_irq_install(dev); /* Resume the modeset for every activated CRTC */ mutex_lock(&dev->mode_config.mutex); drm_helper_resume_force_mode(dev); mutex_unlock(&dev->mode_config.mutex); } intel_opregion_init(dev); dev_priv->modeset_on_lid = 0; console_lock(); intel_fbdev_set_suspend(dev, 0); console_unlock(); return error; }
static int __i915_drm_thaw(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; int error = 0; i915_restore_state(dev); intel_opregion_setup(dev); /* KMS EnterVT equivalent */ if (drm_core_check_feature(dev, DRIVER_MODESET)) { intel_init_pch_refclk(dev); mutex_lock(&dev->struct_mutex); dev_priv->mm.suspended = 0; error = i915_gem_init_hw(dev); mutex_unlock(&dev->struct_mutex); intel_modeset_init_hw(dev); intel_modeset_setup_hw_state(dev, false); drm_irq_install(dev); } intel_opregion_init(dev); dev_priv->modeset_on_lid = 0; #ifndef __NetBSD__ /* XXX fb */ /* * The console lock can be pretty contented on resume due * to all the printk activity. Try to keep it out of the hot * path of resume if possible. */ if (console_trylock()) { intel_fbdev_set_suspend(dev, 0); console_unlock(); } else { schedule_work(&dev_priv->console_resume_work); } #endif return error; }
static int i915_drm_resume(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; disable_rpm_wakeref_asserts(dev_priv); mutex_lock(&dev->struct_mutex); i915_gem_restore_gtt_mappings(dev); mutex_unlock(&dev->struct_mutex); i915_restore_state(dev); intel_opregion_setup(dev); intel_init_pch_refclk(dev); drm_mode_config_reset(dev); /* * 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. * * Modeset enabling in intel_modeset_init_hw() also needs working * interrupts. */ intel_runtime_pm_enable_interrupts(dev_priv); mutex_lock(&dev->struct_mutex); if (i915_gem_init_hw(dev)) { DRM_ERROR("failed to re-initialize GPU, declaring wedged!\n"); atomic_or(I915_WEDGED, &dev_priv->gpu_error.reset_counter); } mutex_unlock(&dev->struct_mutex); intel_guc_resume(dev); intel_modeset_init_hw(dev); spin_lock_irq(&dev_priv->irq_lock); if (dev_priv->display.hpd_irq_setup) dev_priv->display.hpd_irq_setup(dev); spin_unlock_irq(&dev_priv->irq_lock); intel_dp_mst_resume(dev); intel_display_resume(dev); /* * ... but also need to make sure that hotplug processing * doesn't cause havoc. Like in the driver load code we don't * bother with the tiny race here where we might loose hotplug * notifications. * */ intel_hpd_init(dev_priv); /* Config may have changed between suspend and resume */ drm_helper_hpd_irq_event(dev); intel_opregion_init(dev); intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false); mutex_lock(&dev_priv->modeset_restore_lock); dev_priv->modeset_restore = MODESET_DONE; mutex_unlock(&dev_priv->modeset_restore_lock); intel_opregion_notify_adapter(dev, PCI_D0); drm_kms_helper_poll_enable(dev); enable_rpm_wakeref_asserts(dev_priv); return 0; }
/** * i915_reset - reset chip after a hang * @dev: drm device to reset * * Reset the chip. Useful if a hang is detected. Returns zero on successful * reset or otherwise an error code. * * Procedure is fairly simple: * - reset the chip using the reset reg * - re-init context state * - re-init hardware status page * - re-init ring buffer * - re-init interrupt state * - re-init display */ int i915_reset(struct drm_device *dev) { drm_i915_private_t *dev_priv = dev->dev_private; int ret; if (!i915_try_reset) return 0; if (!sx_try_xlock(&dev->dev_struct_lock)) return (-EBUSY); dev_priv->stop_rings = 0; i915_gem_reset(dev); ret = -ENODEV; if (time_second - dev_priv->last_gpu_reset < 5) DRM_ERROR("GPU hanging too fast, declaring wedged!\n"); else ret = intel_gpu_reset(dev); dev_priv->last_gpu_reset = time_second; if (ret) { DRM_ERROR("Failed to reset chip.\n"); DRM_UNLOCK(dev); return ret; } /* Ok, now get things going again... */ /* * Everything depends on having the GTT running, so we need to start * there. Fortunately we don't need to do this unless we reset the * chip at a PCI level. * * Next we need to restore the context, but we don't use those * yet either... * * Ring buffer needs to be re-initialized in the KMS case, or if X * was running at the time of the reset (i.e. we weren't VT * switched away). */ if (drm_core_check_feature(dev, DRIVER_MODESET) || !dev_priv->mm.suspended) { struct intel_ring_buffer *ring; int i; dev_priv->mm.suspended = 0; i915_gem_init_swizzling(dev); for_each_ring(ring, dev_priv, i) ring->init(ring); i915_gem_context_init(dev); i915_gem_init_ppgtt(dev); /* * It would make sense to re-init all the other hw state, at * least the rps/rc6/emon init done within modeset_init_hw. For * some unknown reason, this blows up my ilk, so don't. */ DRM_UNLOCK(dev); if (drm_core_check_feature(dev, DRIVER_MODESET)) intel_modeset_init_hw(dev); drm_irq_uninstall(dev); drm_irq_install(dev); } else { DRM_UNLOCK(dev); } return 0; }
static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings) { struct drm_i915_private *dev_priv = dev->dev_private; int error = 0; intel_uncore_early_sanitize(dev); intel_uncore_sanitize(dev); if (drm_core_check_feature(dev, DRIVER_MODESET) && restore_gtt_mappings) { mutex_lock(&dev->struct_mutex); i915_gem_restore_gtt_mappings(dev); mutex_unlock(&dev->struct_mutex); } intel_power_domains_init_hw(dev); i915_restore_state(dev); intel_opregion_setup(dev); /* KMS EnterVT equivalent */ if (drm_core_check_feature(dev, DRIVER_MODESET)) { intel_init_pch_refclk(dev); mutex_lock(&dev->struct_mutex); error = i915_gem_init_hw(dev); mutex_unlock(&dev->struct_mutex); /* We need working interrupts for modeset enabling ... */ drm_irq_install(dev); intel_modeset_init_hw(dev); drm_modeset_lock_all(dev); drm_mode_config_reset(dev); intel_modeset_setup_hw_state(dev, true); drm_modeset_unlock_all(dev); /* * ... but also need to make sure that hotplug processing * doesn't cause havoc. Like in the driver load code we don't * bother with the tiny race here where we might loose hotplug * notifications. * */ intel_hpd_init(dev); dev_priv->enable_hotplug_processing = true; /* Config may have changed between suspend and resume */ intel_resume_hotplug(dev); } intel_opregion_init(dev); /* * The console lock can be pretty contented on resume due * to all the printk activity. Try to keep it out of the hot * path of resume if possible. */ if (console_trylock()) { intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING); console_unlock(); } else { schedule_work(&dev_priv->console_resume_work); } /* Undo what we did at i915_drm_freeze so the refcount goes back to the * expected level. */ hsw_enable_package_c8(dev_priv); mutex_lock(&dev_priv->modeset_restore_lock); dev_priv->modeset_restore = MODESET_DONE; mutex_unlock(&dev_priv->modeset_restore_lock); intel_runtime_pm_put(dev_priv); return error; }
/** * i915_reset - reset chip after a hang * @dev: drm device to reset * * Reset the chip. Useful if a hang is detected. Returns zero on successful * reset or otherwise an error code. * * Procedure is fairly simple: * - reset the chip using the reset reg * - re-init context state * - re-init hardware status page * - re-init ring buffer * - re-init interrupt state * - re-init display */ int i915_reset(struct drm_device *dev) { drm_i915_private_t *dev_priv = dev->dev_private; int ret; if (!i915_try_reset) return 0; if (!mutex_trylock(&dev->struct_mutex)) return -EBUSY; dev_priv->stop_rings = 0; i915_gem_reset(dev); ret = -ENODEV; if (get_seconds() - dev_priv->last_gpu_reset < 5) DRM_ERROR("GPU hanging too fast, declaring wedged!\n"); else ret = intel_gpu_reset(dev); dev_priv->last_gpu_reset = get_seconds(); if (ret) { DRM_ERROR("Failed to reset chip.\n"); mutex_unlock(&dev->struct_mutex); return ret; } /* Ok, now get things going again... */ /* * Everything depends on having the GTT running, so we need to start * there. Fortunately we don't need to do this unless we reset the * chip at a PCI level. * * Next we need to restore the context, but we don't use those * yet either... * * Ring buffer needs to be re-initialized in the KMS case, or if X * was running at the time of the reset (i.e. we weren't VT * switched away). */ if (drm_core_check_feature(dev, DRIVER_MODESET) || !dev_priv->mm.suspended) { struct intel_ring_buffer *ring; int i; dev_priv->mm.suspended = 0; i915_gem_init_swizzling(dev); for_each_ring(ring, dev_priv, i) ring->init(ring); i915_gem_init_ppgtt(dev); mutex_unlock(&dev->struct_mutex); if (drm_core_check_feature(dev, DRIVER_MODESET)) intel_modeset_init_hw(dev); drm_irq_uninstall(dev); drm_irq_install(dev); } else { mutex_unlock(&dev->struct_mutex); } return 0; }
static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings) { struct drm_i915_private *dev_priv = dev->dev_private; if (drm_core_check_feature(dev, DRIVER_MODESET) && restore_gtt_mappings) { mutex_lock(&dev->struct_mutex); i915_gem_restore_gtt_mappings(dev); mutex_unlock(&dev->struct_mutex); } i915_restore_state(dev); intel_opregion_setup(dev); /* KMS EnterVT equivalent */ if (drm_core_check_feature(dev, DRIVER_MODESET)) { intel_init_pch_refclk(dev); drm_mode_config_reset(dev); mutex_lock(&dev->struct_mutex); if (i915_gem_init_hw(dev)) { DRM_ERROR("failed to re-initialize GPU, declaring wedged!\n"); atomic_set_mask(I915_WEDGED, &dev_priv->gpu_error.reset_counter); } mutex_unlock(&dev->struct_mutex); intel_runtime_pm_restore_interrupts(dev); intel_modeset_init_hw(dev); { unsigned long irqflags; spin_lock_irqsave(&dev_priv->irq_lock, irqflags); if (dev_priv->display.hpd_irq_setup) dev_priv->display.hpd_irq_setup(dev); spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); } intel_dp_mst_resume(dev); drm_modeset_lock_all(dev); intel_modeset_setup_hw_state(dev, true); drm_modeset_unlock_all(dev); /* * ... but also need to make sure that hotplug processing * doesn't cause havoc. Like in the driver load code we don't * bother with the tiny race here where we might loose hotplug * notifications. * */ intel_hpd_init(dev); /* Config may have changed between suspend and resume */ drm_helper_hpd_irq_event(dev); } intel_opregion_init(dev); /* * The console lock can be pretty contented on resume due * to all the printk activity. Try to keep it out of the hot * path of resume if possible. */ if (console_trylock()) { intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING); console_unlock(); } else { schedule_work(&dev_priv->console_resume_work); } mutex_lock(&dev_priv->modeset_restore_lock); dev_priv->modeset_restore = MODESET_DONE; mutex_unlock(&dev_priv->modeset_restore_lock); intel_opregion_notify_adapter(dev, PCI_D0); return 0; }