From: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Date: Wed, 24 Jan 2018 21:16:57 +0530
Subject: drm/i915/guc: Enable interrupts before resuming GuC during runtime
resume
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Git-commit: 1ed21cb4142bccd23d988e2b47541c302f4d09fb
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
GuC log streaming needs interrupts enabled prior to GuC resume but
runtime pm interrupt setup was happening post GuC resume. Fix it.
While at it, fix the unwinding of steps in the runtime suspend path.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104695
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Marta Lofstedt <marta.lofstedt@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/1516808821-3638-2-git-send-email-sagar.a.kamble@intel.com
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/i915/i915_drv.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -2588,6 +2588,11 @@ static int intel_runtime_suspend(struct
intel_runtime_pm_enable_interrupts(dev_priv);
+ intel_guc_resume(dev_priv);
+
+ i915_gem_init_swizzling(dev_priv);
+ i915_gem_restore_fences(dev_priv);
+
enable_rpm_wakeref_asserts(dev_priv);
return ret;
@@ -2653,8 +2658,6 @@ static int intel_runtime_resume(struct d
if (intel_uncore_unclaimed_mmio(dev_priv))
DRM_DEBUG_DRIVER("Unclaimed access during suspend, bios?\n");
- intel_guc_resume(dev_priv);
-
if (IS_GEN9_LP(dev_priv)) {
bxt_disable_dc9(dev_priv);
bxt_display_core_init(dev_priv, true);
@@ -2669,6 +2672,10 @@ static int intel_runtime_resume(struct d
intel_uncore_runtime_resume(dev_priv);
+ intel_runtime_pm_enable_interrupts(dev_priv);
+
+ intel_guc_resume(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).
@@ -2676,8 +2683,6 @@ static int intel_runtime_resume(struct d
i915_gem_init_swizzling(dev_priv);
i915_gem_restore_fences(dev_priv);
- intel_runtime_pm_enable_interrupts(dev_priv);
-
/*
* On VLV/CHV display interrupts are part of the display
* power well, so hpd is reinitialized from there. For