Right now RESET_PCH_HANDSHAKE_ENABLE is enabled all the times inside
of intel_power_domains_init_hw() and if PCH is NOP it is unsed in
i915_gem_init_hw().
So making skl_pch_reset_handshake() handle both cases and calling
it for the missing gens in intel_power_domains_init_hw().
Ivybridge have a different register and bits but with the same
objective so moving it too.
v2(Rodrigo):
- handling IVYBRIDGE case inside intel_pch_reset_handshake()
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem.c | 12 ------------
drivers/gpu/drm/i915/intel_runtime_pm.c | 19 ++++++++++++++++---
2 files changed, 16 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 89834ce19acd..b389e084c8c6 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -5296,18 +5296,6 @@ int i915_gem_init_hw(struct drm_i915_private *dev_priv)
I915_WRITE(MI_PREDICATE_RESULT_2, IS_HSW_GT3(dev_priv) ?
LOWER_SLICE_ENABLED : LOWER_SLICE_DISABLED);
- if (HAS_PCH_NOP(dev_priv)) {
- if (IS_IVYBRIDGE(dev_priv)) {
- u32 temp = I915_READ(GEN7_MSG_CTL);
- temp &= ~(WAIT_FOR_PCH_FLR_ACK | WAIT_FOR_PCH_RESET_ACK);
- I915_WRITE(GEN7_MSG_CTL, temp);
- } else if (INTEL_GEN(dev_priv) >= 7) {
- u32 temp = I915_READ(HSW_NDE_RSTWRN_OPT);
- temp &= ~RESET_PCH_HANDSHAKE_ENABLE;
- I915_WRITE(HSW_NDE_RSTWRN_OPT, temp);
- }
- }
-
intel_gt_workarounds_apply(dev_priv);
i915_gem_init_swizzling(dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 1bcd0e51fca1..bca1976fdb1d 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -3241,10 +3241,22 @@ static void icl_mbus_init(struct drm_i915_private *dev_priv)
static void intel_pch_reset_handshake(struct drm_i915_private *dev_priv)
{
- u32 val = I915_READ(HSW_NDE_RSTWRN_OPT);
+ u32 val;
+
+ if (IS_IVYBRIDGE(dev_priv)) {
+ if (HAS_PCH_NOP(dev_priv)) {
+ val = I915_READ(GEN7_MSG_CTL);
+ val &= ~(WAIT_FOR_PCH_FLR_ACK | WAIT_FOR_PCH_RESET_ACK);
+ I915_WRITE(GEN7_MSG_CTL, val);
+ }
+
+ return;
+ }
+
+ val = I915_READ(HSW_NDE_RSTWRN_OPT);
/* BXT don't have PCH and it requires that this bit is always unset */
- if (HAS_PCH_SPLIT(dev_priv))
+ if (HAS_PCH_SPLIT(dev_priv) && !HAS_PCH_NOP(dev_priv))
val |= RESET_PCH_HANDSHAKE_ENABLE;
else
val &= ~RESET_PCH_HANDSHAKE_ENABLE;
@@ -3756,7 +3768,8 @@ void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume)
mutex_lock(&power_domains->lock);
vlv_cmnlane_wa(dev_priv);
mutex_unlock(&power_domains->lock);
- }
+ } else if (IS_IVYBRIDGE(dev_priv) || INTEL_GEN(dev_priv) >= 7)
+ intel_pch_reset_handshake(dev_priv);
/*
* Keep all power wells enabled for any dependent HW access during
--
2.19.0
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