Commit 035ea405 authored by Ville Syrjälä's avatar Ville Syrjälä

drm/i915: Unbreak interrupts on pre-gen6

Prior to gen6 we didn't have per-ring IMR registers, which means that
since commit 61ff75ac ("drm/i915: Simplify enabling
user-interrupts with L3-remapping") we're now masking off all interrupts
when init_render_ring() gets called. That's rather rude. Let's limit
the ring IMR frobbing to machines that actually have the per-ring IMR
registers.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes: 61ff75ac ("drm/i915: Simplify enabling user-interrupts with L3-remapping")
Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1468340687-3596-1-git-send-email-ville.syrjala@linux.intel.comReviewd-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent 8d35acba
......@@ -1305,6 +1305,7 @@ static int init_render_ring(struct intel_engine_cs *engine)
if (IS_GEN(dev_priv, 6, 7))
I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_FORCE_ORDERING));
if (INTEL_INFO(dev_priv)->gen >= 6)
I915_WRITE_IMR(engine, ~engine->irq_keep_mask);
return init_workarounds_ring(engine);
......
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