[PATCH v5] drm/i915: Make IRQ reset and postinstall multi-gt aware

[Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>]

In multi-gt systems IRQs need to be reset and enabled per GT.

This might add some redundancy when handling interrupts for
engines that might not exist in every tile, but helps to keep the
code cleaner and more understandable.

Signed-off-by: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
Hi,

thanks Matt for the review.

Andi

Changelog
=========
v4 -> v5
 - Another little cosmetic on the variable declaration. Go back
   to v3 but using "&dev_priv->uncore" instead of
   "to_gt(dev_priv)->uncore", which is much cleaner.
 - Add Matt's r-b.
v3 -> v4
 - do not change the initial gt and uncore initialization in
   order to gain a better understanding at a glance of the
   purpose of all the local variables.
v2 -> v3
 - keep GUnit irq initialization out of the for_each_gt() loop as
   the media GT doesn't have a GUnit.
v1 -> v2
 - improve description in the commit log.

 drivers/gpu/drm/i915/i915_irq.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

 drivers/gpu/drm/i915/i915_irq.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index dea1a117f3fa1..eead067f18c7a 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2856,12 +2856,15 @@ static void gen11_irq_reset(struct drm_i915_private *dev_priv)
 
 static void dg1_irq_reset(struct drm_i915_private *dev_priv)
 {
-	struct intel_gt *gt = to_gt(dev_priv);
-	struct intel_uncore *uncore = gt->uncore;
+	struct intel_uncore *uncore = &dev_priv->uncore;
+	struct intel_gt *gt;
+	unsigned int i;
 
 	dg1_master_intr_disable(dev_priv->uncore.regs);
 
-	gen11_gt_irq_reset(gt);
+	for_each_gt(gt, dev_priv, i)
+		gen11_gt_irq_reset(gt);
+
 	gen11_display_irq_reset(dev_priv);
 
 	GEN3_IRQ_RESET(uncore, GEN11_GU_MISC_);
@@ -3643,11 +3646,13 @@ static void gen11_irq_postinstall(struct drm_i915_private *dev_priv)
 
 static void dg1_irq_postinstall(struct drm_i915_private *dev_priv)
 {
-	struct intel_gt *gt = to_gt(dev_priv);
-	struct intel_uncore *uncore = gt->uncore;
+	struct intel_uncore *uncore = &dev_priv->uncore;
 	u32 gu_misc_masked = GEN11_GU_MISC_GSE;
+	struct intel_gt *gt;
+	unsigned int i;
 
-	gen11_gt_irq_postinstall(gt);
+	for_each_gt(gt, dev_priv, i)
+		gen11_gt_irq_postinstall(gt);
 
 	GEN3_IRQ_INIT(uncore, GEN11_GU_MISC_, ~gu_misc_masked, gu_misc_masked);
 
-- 
2.39.2