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drm/i915: Only sanitize GEM from late suspend 

During testing we encounter a conflict between SUSPEND_TEST_DEVICES and
disabling reset (gem_eio/suspend). This results in the device continuing
on without being reset, but since it has gone through HW sanitization to
account for the suspend/resume cycle, we have to assume the device has
been reset to its defaults. A simple way around this is to skip the
sanitize phase for SUSPEND_TEST_DEVICES by moving it to suspend-late.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180531082246.9763-4-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2018-05-31 09:22:46 +01:00
parent c3160da9a6
commit ec92ad00a3
3 changed files with 19 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/i915/i915_drv.c
View File

@ -636,6 +636,8 @@ static const struct vga_switcheroo_client_ops i915_switcheroo_ops = {
static void i915_gem_fini(struct drm_i915_private *dev_priv)
{
i915_gem_suspend_late(dev_priv);
/* Flush any outstanding unpin_work. */
i915_gem_drain_workqueue(dev_priv);
@ -1611,7 +1613,6 @@ static int i915_drm_suspend(struct drm_device *dev)
opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold;
intel_opregion_notify_adapter(dev_priv, opregion_target_state);
intel_uncore_suspend(dev_priv);
intel_opregion_unregister(dev_priv);
intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true);
@ -1633,7 +1634,10 @@ static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation)
disable_rpm_wakeref_asserts(dev_priv);
i915_gem_suspend_late(dev_priv);
intel_display_set_init_power(dev_priv, false);
intel_uncore_suspend(dev_priv);
/*
* In case of firmware assisted context save/restore don't manually

1
drivers/gpu/drm/i915/i915_drv.h
View File

@ -3169,6 +3169,7 @@ void i915_gem_cleanup_engines(struct drm_i915_private *dev_priv);
int i915_gem_wait_for_idle(struct drm_i915_private *dev_priv,
unsigned int flags);
int __must_check i915_gem_suspend(struct drm_i915_private *dev_priv);
void i915_gem_suspend_late(struct drm_i915_private *dev_priv);
void i915_gem_resume(struct drm_i915_private *dev_priv);
int i915_gem_fault(struct vm_fault *vmf);
int i915_gem_object_wait(struct drm_i915_gem_object *obj,

22
drivers/gpu/drm/i915/i915_gem.c
View File

@ -5055,6 +5055,17 @@ int i915_gem_suspend(struct drm_i915_private *dev_priv)
if (WARN_ON(!intel_engines_are_idle(dev_priv)))
i915_gem_set_wedged(dev_priv); /* no hope, discard everything */
intel_runtime_pm_put(dev_priv);
return 0;
err_unlock:
mutex_unlock(&dev->struct_mutex);
intel_runtime_pm_put(dev_priv);
return ret;
}
void i915_gem_suspend_late(struct drm_i915_private *i915)
{
/*
* Neither the BIOS, ourselves or any other kernel
* expects the system to be in execlists mode on startup,
@ -5074,16 +5085,9 @@ int i915_gem_suspend(struct drm_i915_private *dev_priv)
* machines is a good idea, we don't - just in case it leaves the
* machine in an unusable condition.
*/
intel_uc_sanitize(dev_priv);
i915_gem_sanitize(dev_priv);
intel_runtime_pm_put(dev_priv);
return 0;
err_unlock:
mutex_unlock(&dev->struct_mutex);
intel_runtime_pm_put(dev_priv);
return ret;
intel_uc_sanitize(i915);
i915_gem_sanitize(i915);
}
void i915_gem_resume(struct drm_i915_private *i915)