drm/i915/guc: Update rps.pm_intrmsk_mbz in guc_interrupts_capture/release

Different state is to be maintained for rps.pm_intrmsk_mbz for GuC and
Execlists. Updating it inside guc_interrupts_* routines as in those
routines GuC load/submission params are sanitized and it should not be set
based on HAS_GUC_SCHED during intel_irq_init.

Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Oscar Mateo <oscar.mateo@intel.com>
Cc: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1489199821-6707-3-git-send-email-sagar.a.kamble@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 01b611c..ca7723f 100644 (file)
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -954,6 +954,28 @@ static void guc_interrupts_capture(struct drm_i915_private *dev_priv)
        I915_WRITE(GUC_BCS_RCS_IER, ~irqs);
        I915_WRITE(GUC_VCS2_VCS1_IER, ~irqs);
        I915_WRITE(GUC_WD_VECS_IER, ~irqs);
+
+       /*
+        * The REDIRECT_TO_GUC bit of the PMINTRMSK register directs all
+        * (unmasked) PM interrupts to the GuC. All other bits of this
+        * register *disable* generation of a specific interrupt.
+        *
+        * 'pm_intrmsk_mbz' indicates bits that are NOT to be set when
+        * writing to the PM interrupt mask register, i.e. interrupts
+        * that must not be disabled.
+        *
+        * If the GuC is handling these interrupts, then we must not let
+        * the PM code disable ANY interrupt that the GuC is expecting.
+        * So for each ENABLED (0) bit in this register, we must SET the
+        * bit in pm_intrmsk_mbz so that it's left enabled for the GuC.
+        * GuC needs ARAT expired interrupt unmasked hence it is set in
+        * pm_intrmsk_mbz.
+        *
+        * Here we CLEAR REDIRECT_TO_GUC bit in pm_intrmsk_mbz, which will
+        * result in the register bit being left SET!
+        */
+       dev_priv->rps.pm_intrmsk_mbz |= ARAT_EXPIRED_INTRMSK;
+       dev_priv->rps.pm_intrmsk_mbz &= ~GEN8_PMINTR_REDIRECT_TO_GUC;
 }
 
 int i915_guc_submission_enable(struct drm_i915_private *dev_priv)
@@ -1014,6 +1036,10 @@ static void guc_interrupts_release(struct drm_i915_private *dev_priv)
        I915_WRITE(GUC_BCS_RCS_IER, 0);
        I915_WRITE(GUC_VCS2_VCS1_IER, 0);
        I915_WRITE(GUC_WD_VECS_IER, 0);
+
+       dev_priv->rps.pm_intrmsk_mbz |= GEN8_PMINTR_REDIRECT_TO_GUC;
+       dev_priv->rps.pm_intrmsk_mbz &= ~ARAT_EXPIRED_INTRMSK;
+
 }
 
 void i915_guc_submission_disable(struct drm_i915_private *dev_priv)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index a6bf619..a522da7 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -4284,30 +4284,6 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
        if (INTEL_INFO(dev_priv)->gen >= 8)
                dev_priv->rps.pm_intrmsk_mbz |= GEN8_PMINTR_REDIRECT_TO_GUC;
 
-       /*
-        * The REDIRECT_TO_GUC bit of the PMINTRMSK register directs all
-        * (unmasked) PM interrupts to the GuC. All other bits of this
-        * register *disable* generation of a specific interrupt.
-        *
-        * 'pm_intrmsk_mbz' indicates bits that are NOT to be set when
-        * writing to the PM interrupt mask register, i.e. interrupts
-        * that must not be disabled.
-        *
-        * If the GuC is handling these interrupts, then we must not let
-        * the PM code disable ANY interrupt that the GuC is expecting.
-        * So for each ENABLED (0) bit in this register, we must SET the
-        * bit in pm_intrmsk_mbz so that it's left enabled for the GuC.
-        * GuC needs ARAT expired interrupt unmasked hence it is set in
-        * pm_intrmsk_mbz.
-        *
-        * Here we CLEAR REDIRECT_TO_GUC bit in pm_intrmsk_mbz, which will
-        * result in the register bit being left SET!
-        */
-       if (HAS_GUC_SCHED(dev_priv)) {
-               dev_priv->rps.pm_intrmsk_mbz |= ARAT_EXPIRED_INTRMSK;
-               dev_priv->rps.pm_intrmsk_mbz &= ~GEN8_PMINTR_REDIRECT_TO_GUC;
-       }
-
        if (IS_GEN2(dev_priv)) {
                /* Gen2 doesn't have a hardware frame counter */
                dev->max_vblank_count = 0;