Quite simply we only need to check for prior corruption on enabling rc6
on module load and resume, so by hooking into the common entry points.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_rc6.c | 67 +++--------------------
drivers/gpu/drm/i915/gt/intel_rc6.h | 2 -
drivers/gpu/drm/i915/gt/intel_rc6_types.h | 1 -
drivers/gpu/drm/i915/i915_drv.c | 2 -
4 files changed, 9 insertions(+), 63 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c
index f58674f4aaec..149021f8aa52 100644
--- a/drivers/gpu/drm/i915/gt/intel_rc6.c
+++ b/drivers/gpu/drm/i915/gt/intel_rc6.c
@@ -488,63 +488,16 @@ static void rpm_put(struct intel_rc6 *rc6)
rc6->wakeref = false;
}
-static bool intel_rc6_ctx_corrupted(struct intel_rc6 *rc6)
+static bool pctx_corrupted(struct intel_rc6 *rc6)
{
- return !intel_uncore_read(rc6_to_uncore(rc6), GEN8_RC6_CTX_INFO);
-}
-
-static void intel_rc6_ctx_wa_init(struct intel_rc6 *rc6)
-{
- struct drm_i915_private *i915 = rc6_to_i915(rc6);
-
- if (!NEEDS_RC6_CTX_CORRUPTION_WA(i915))
- return;
-
- if (intel_rc6_ctx_corrupted(rc6)) {
- DRM_INFO("RC6 context corrupted, disabling runtime power management\n");
- rc6->ctx_corrupted = true;
- }
-}
-
-/**
- * intel_rc6_ctx_wa_resume - system resume sequence for the RC6 CTX WA
- * @rc6: rc6 state
- *
- * Perform any steps needed to re-init the RC6 CTX WA after system resume.
- */
-void intel_rc6_ctx_wa_resume(struct intel_rc6 *rc6)
-{
- if (rc6->ctx_corrupted && !intel_rc6_ctx_corrupted(rc6)) {
- DRM_INFO("RC6 context restored, re-enabling runtime power management\n");
- rc6->ctx_corrupted = false;
- }
-}
-
-/**
- * intel_rc6_ctx_wa_check - check for a new RC6 CTX corruption
- * @rc6: rc6 state
- *
- * Check if an RC6 CTX corruption has happened since the last check and if so
- * disable RC6 and runtime power management.
-*/
-static bool intel_rc6_ctx_wa_check(struct intel_rc6 *rc6)
-{
- struct drm_i915_private *i915 = rc6_to_i915(rc6);
-
- if (!NEEDS_RC6_CTX_CORRUPTION_WA(i915))
- return false;
-
- if (rc6->ctx_corrupted)
+ if (NEEDS_RC6_CTX_CORRUPTION_WA(rc6_to_i915(rc6)))
return false;
- if (!intel_rc6_ctx_corrupted(rc6))
+ if (intel_uncore_read(rc6_to_uncore(rc6), GEN8_RC6_CTX_INFO))
return false;
- dev_notice(i915->drm.dev,
- "RC6 context corruption, disabling runtime power management\n");
-
- rc6->ctx_corrupted = true;
-
+ dev_notice(rc6_to_i915(rc6)->drm.dev,
+ "RC6 context corrupted, disabling runtime power management\n");
return true;
}
@@ -572,8 +525,6 @@ void intel_rc6_init(struct intel_rc6 *rc6)
if (!rc6_supported(rc6))
return;
- intel_rc6_ctx_wa_init(rc6);
-
if (IS_CHERRYVIEW(i915))
err = chv_rc6_init(rc6);
else if (IS_VALLEYVIEW(i915))
@@ -608,9 +559,6 @@ void intel_rc6_enable(struct intel_rc6 *rc6)
GEM_BUG_ON(rc6->enabled);
- if (rc6->ctx_corrupted)
- return;
-
intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
if (IS_CHERRYVIEW(i915))
@@ -631,6 +579,9 @@ void intel_rc6_enable(struct intel_rc6 *rc6)
intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
+ if (unlikely(pctx_corrupted(rc6)))
+ return;
+
/* rc6 is ready, runtime-pm is go! */
rpm_put(rc6);
rc6->enabled = true;
@@ -654,7 +605,7 @@ void intel_rc6_park(struct intel_rc6 *rc6)
if (!rc6->enabled)
return;
- if (unlikely(intel_rc6_ctx_wa_check(rc6))) {
+ if (unlikely(pctx_corrupted(rc6))) {
intel_rc6_disable(rc6);
return;
}
diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.h b/drivers/gpu/drm/i915/gt/intel_rc6.h
index f2821576bfd3..9f0f23fca8af 100644
--- a/drivers/gpu/drm/i915/gt/intel_rc6.h
+++ b/drivers/gpu/drm/i915/gt/intel_rc6.h
@@ -25,6 +25,4 @@ void intel_rc6_disable(struct intel_rc6 *rc6);
u64 intel_rc6_residency_ns(struct intel_rc6 *rc6, i915_reg_t reg);
u64 intel_rc6_residency_us(struct intel_rc6 *rc6, i915_reg_t reg);
-void intel_rc6_ctx_wa_resume(struct intel_rc6 *rc6);
-
#endif /* INTEL_RC6_H */
diff --git a/drivers/gpu/drm/i915/gt/intel_rc6_types.h b/drivers/gpu/drm/i915/gt/intel_rc6_types.h
index 9f3d56817c97..60decae1abc9 100644
--- a/drivers/gpu/drm/i915/gt/intel_rc6_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_rc6_types.h
@@ -25,7 +25,6 @@ struct intel_rc6 {
bool supported : 1;
bool enabled : 1;
bool wakeref : 1;
- bool ctx_corrupted : 1;
};
#endif /* INTEL_RC6_TYPES_H */
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index f509d826fcc7..34344b632e1f 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1817,8 +1817,6 @@ static int i915_drm_resume(struct drm_device *dev)
disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
- intel_rc6_ctx_wa_resume(&dev_priv->gt.rc6);
-
intel_gt_sanitize(&dev_priv->gt, true);
ret = i915_ggtt_enable_hw(dev_priv);
--
2.24.0
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