From 47bc28d7ee6d8378ba4451c43885cb3241302243 Mon Sep 17 00:00:00 2001 From: Janusz Krzysztofik Date: Thu, 30 May 2019 15:31:05 +0200 Subject: [PATCH] drm/i915: Split off pci_driver.remove() tail to drm_driver.release() In order to support driver hot unbind, some cleanup operations, now performed on PCI driver remove, must be called later, after all device file descriptors are closed. Split out those operations from the tail of pci_driver.remove() callback and put them into drm_driver.release() which is called as soon as all references to the driver are put. As a result, those cleanups will be now run on last drm_dev_put(), either still called from pci_driver.remove() if all device file descriptors are already closed, or on last drm_release() file operation. Signed-off-by: Janusz Krzysztofik Reviewed-by: Chris Wilson Signed-off-by: Chris Wilson Link: https://patchwork.freedesktop.org/patch/msgid/20190530133105.30467-1-janusz.krzysztofik@linux.intel.com --- drivers/gpu/drm/i915/i915_drv.c | 17 +++++++++++++---- drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/i915_gem.c | 10 +++++++++- 3 files changed, 23 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 6a8b31f..1af6751 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -742,6 +742,7 @@ static int i915_load_modeset_init(struct drm_device *dev) cleanup_gem: i915_gem_suspend(dev_priv); + i915_gem_fini_hw(dev_priv); i915_gem_fini(dev_priv); cleanup_modeset: intel_modeset_cleanup(dev); @@ -1690,7 +1691,6 @@ static void i915_driver_cleanup_hw(struct drm_i915_private *dev_priv) pci_disable_msi(pdev); pm_qos_remove_request(&dev_priv->pm_qos); - i915_ggtt_cleanup_hw(dev_priv); } /** @@ -1914,6 +1914,7 @@ int i915_driver_load(struct pci_dev *pdev, const struct pci_device_id *ent) out_cleanup_hw: i915_driver_cleanup_hw(dev_priv); + i915_ggtt_cleanup_hw(dev_priv); out_cleanup_mmio: i915_driver_cleanup_mmio(dev_priv); out_runtime_pm_put: @@ -1965,21 +1966,29 @@ void i915_driver_unload(struct drm_device *dev) cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work); i915_reset_error_state(dev_priv); - i915_gem_fini(dev_priv); + i915_gem_fini_hw(dev_priv); intel_power_domains_fini_hw(dev_priv); i915_driver_cleanup_hw(dev_priv); - i915_driver_cleanup_mmio(dev_priv); enable_rpm_wakeref_asserts(dev_priv); - intel_runtime_pm_cleanup(dev_priv); } static void i915_driver_release(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); + disable_rpm_wakeref_asserts(dev_priv); + + i915_gem_fini(dev_priv); + + i915_ggtt_cleanup_hw(dev_priv); + i915_driver_cleanup_mmio(dev_priv); + + enable_rpm_wakeref_asserts(dev_priv); + intel_runtime_pm_cleanup(dev_priv); + i915_driver_cleanup_early(dev_priv); i915_driver_destroy(dev_priv); } diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 4eb8f6a..0dee503 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2745,6 +2745,7 @@ void i915_gem_init_mmio(struct drm_i915_private *i915); int __must_check i915_gem_init(struct drm_i915_private *dev_priv); int __must_check i915_gem_init_hw(struct drm_i915_private *dev_priv); void i915_gem_init_swizzling(struct drm_i915_private *dev_priv); +void i915_gem_fini_hw(struct drm_i915_private *dev_priv); void i915_gem_fini(struct drm_i915_private *dev_priv); int i915_gem_wait_for_idle(struct drm_i915_private *dev_priv, unsigned int flags, long timeout); diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index e5aafbe..5c6d94f 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1664,7 +1664,7 @@ err_uc_misc: return ret; } -void i915_gem_fini(struct drm_i915_private *dev_priv) +void i915_gem_fini_hw(struct drm_i915_private *dev_priv) { GEM_BUG_ON(dev_priv->gt.awake); @@ -1679,6 +1679,14 @@ void i915_gem_fini(struct drm_i915_private *dev_priv) mutex_lock(&dev_priv->drm.struct_mutex); intel_uc_fini_hw(dev_priv); intel_uc_fini(dev_priv); + mutex_unlock(&dev_priv->drm.struct_mutex); + + i915_gem_drain_freed_objects(dev_priv); +} + +void i915_gem_fini(struct drm_i915_private *dev_priv) +{ + mutex_lock(&dev_priv->drm.struct_mutex); intel_engines_cleanup(dev_priv); i915_gem_contexts_fini(dev_priv); i915_gem_fini_scratch(dev_priv); -- 2.7.4