diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 8c775e96b4e4..f0f8f6059652 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7774,8 +7774,9 @@ enum {
 #define  FORCEWAKE_ACK_MEDIA_GEN9		_MMIO(0x0D88)
 #define  FORCEWAKE_ACK_RENDER_GEN9		_MMIO(0x0D84)
 #define  FORCEWAKE_ACK_BLITTER_GEN9		_MMIO(0x130044)
-#define   FORCEWAKE_KERNEL			0x1
-#define   FORCEWAKE_USER			0x2
+#define   FORCEWAKE_KERNEL			BIT(0)
+#define   FORCEWAKE_USER			BIT(1)
+#define   FORCEWAKE_KERNEL_FALLBACK		BIT(15)
 #define  FORCEWAKE_MT_ACK			_MMIO(0x130040)
 #define  ECOBUS					_MMIO(0xa180)
 #define    FORCEWAKE_MT_ENABLE			(1<<5)
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 96ee6b2754be..1fe6ce4f1138 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -69,17 +69,104 @@ fw_domain_arm_timer(struct intel_uncore_forcewake_domain *d)
 			       HRTIMER_MODE_REL);
 }
 
+static inline int
+__wait_for_ack(const struct drm_i915_private *i915,
+	       const struct intel_uncore_forcewake_domain *d,
+	       const u32 ack,
+	       const u32 value)
+{
+	return wait_for_atomic((__raw_i915_read32(i915, d->reg_ack) & ack) == value,
+			       FORCEWAKE_ACK_TIMEOUT_MS);
+}
+
+static inline int
+wait_ack_clear(const struct drm_i915_private *i915,
+	       const struct intel_uncore_forcewake_domain *d,
+	       const u32 ack)
+{
+	return __wait_for_ack(i915, d, ack, 0);
+}
+
+static inline int
+wait_ack_set(const struct drm_i915_private *i915,
+	     const struct intel_uncore_forcewake_domain *d,
+	     const u32 ack)
+{
+	return __wait_for_ack(i915, d, ack, ack);
+}
+
 static inline void
 fw_domain_wait_ack_clear(const struct drm_i915_private *i915,
 			 const struct intel_uncore_forcewake_domain *d)
 {
-	if (wait_for_atomic((__raw_i915_read32(i915, d->reg_ack) &
-			     FORCEWAKE_KERNEL) == 0,
-			    FORCEWAKE_ACK_TIMEOUT_MS))
+	if (wait_ack_clear(i915, d, FORCEWAKE_KERNEL))
 		DRM_ERROR("%s: timed out waiting for forcewake ack to clear.\n",
 			  intel_uncore_forcewake_domain_to_str(d->id));
 }
 
+enum ack_type {
+	ACK_CLEAR = 0,
+	ACK_SET
+};
+
+static int
+fw_domain_wait_ack_with_fallback(const struct drm_i915_private *i915,
+				 const struct intel_uncore_forcewake_domain *d,
+				 const enum ack_type type)
+{
+	const u32 ack_bit = FORCEWAKE_KERNEL;
+	const u32 value = type == ACK_SET ? ack_bit : 0;
+	unsigned int pass;
+	bool ack_detected;
+
+	/*
+	 * There is a possibility of driver's wake request colliding
+	 * with hardware's own wake requests and that can cause
+	 * hardware to not deliver the driver's ack message.
+	 *
+	 * Use a fallback bit toggle to kick the gpu state machine
+	 * in the hope that the original ack will be delivered along with
+	 * the fallback ack.
+	 *
+	 * This workaround is described in HSDES #1604254524
+	 */
+
+	pass = 1;
+	do {
+		wait_ack_clear(i915, d, FORCEWAKE_KERNEL_FALLBACK);
+
+		__raw_i915_write32(i915, d->reg_set,
+				   _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL_FALLBACK));
+		/* Give gt some time to relax before the polling frenzy */
+		udelay(10 * pass);
+		wait_ack_set(i915, d, FORCEWAKE_KERNEL_FALLBACK);
+
+		ack_detected = (__raw_i915_read32(i915, d->reg_ack) & ack_bit) == value;
+
+		__raw_i915_write32(i915, d->reg_set,
+				   _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL_FALLBACK));
+	} while (!ack_detected && pass++ < 10);
+
+	DRM_DEBUG_DRIVER("%s had to use fallback to %s ack, 0x%x (passes %u)\n",
+			 intel_uncore_forcewake_domain_to_str(d->id),
+			 type == ACK_SET ? "set" : "clear",
+			 __raw_i915_read32(i915, d->reg_ack),
+			 pass);
+
+	return ack_detected ? 0 : -ETIMEDOUT;
+}
+
+static inline void
+fw_domain_wait_ack_clear_fallback(const struct drm_i915_private *i915,
+				  const struct intel_uncore_forcewake_domain *d)
+{
+	if (likely(!wait_ack_clear(i915, d, FORCEWAKE_KERNEL)))
+		return;
+
+	if (fw_domain_wait_ack_with_fallback(i915, d, ACK_CLEAR))
+		fw_domain_wait_ack_clear(i915, d);
+}
+
 static inline void
 fw_domain_get(struct drm_i915_private *i915,
 	      const struct intel_uncore_forcewake_domain *d)
@@ -88,17 +175,26 @@ fw_domain_get(struct drm_i915_private *i915,
 }
 
 static inline void
-fw_domain_wait_ack(const struct drm_i915_private *i915,
-		   const struct intel_uncore_forcewake_domain *d)
+fw_domain_wait_ack_set(const struct drm_i915_private *i915,
+		       const struct intel_uncore_forcewake_domain *d)
 {
-	if (wait_for_atomic((__raw_i915_read32(i915, d->reg_ack) &
-			     FORCEWAKE_KERNEL),
-			    FORCEWAKE_ACK_TIMEOUT_MS))
+	if (wait_ack_set(i915, d, FORCEWAKE_KERNEL))
 		DRM_ERROR("%s: timed out waiting for forcewake ack request.\n",
 			  intel_uncore_forcewake_domain_to_str(d->id));
 }
 
 static inline void
+fw_domain_wait_ack_set_fallback(const struct drm_i915_private *i915,
+				const struct intel_uncore_forcewake_domain *d)
+{
+	if (likely(!wait_ack_set(i915, d, FORCEWAKE_KERNEL)))
+		return;
+
+	if (fw_domain_wait_ack_with_fallback(i915, d, ACK_SET))
+		fw_domain_wait_ack_set(i915, d);
+}
+
+static inline void
 fw_domain_put(const struct drm_i915_private *i915,
 	      const struct intel_uncore_forcewake_domain *d)
 {
@@ -119,7 +215,27 @@ fw_domains_get(struct drm_i915_private *i915, enum forcewake_domains fw_domains)
 	}
 
 	for_each_fw_domain_masked(d, fw_domains, i915, tmp)
-		fw_domain_wait_ack(i915, d);
+		fw_domain_wait_ack_set(i915, d);
+
+	i915->uncore.fw_domains_active |= fw_domains;
+}
+
+static void
+fw_domains_get_with_fallback(struct drm_i915_private *i915,
+			     enum forcewake_domains fw_domains)
+{
+	struct intel_uncore_forcewake_domain *d;
+	unsigned int tmp;
+
+	GEM_BUG_ON(fw_domains & ~i915->uncore.fw_domains);
+
+	for_each_fw_domain_masked(d, fw_domains, i915, tmp) {
+		fw_domain_wait_ack_clear_fallback(i915, d);
+		fw_domain_get(i915, d);
+	}
+
+	for_each_fw_domain_masked(d, fw_domains, i915, tmp)
+		fw_domain_wait_ack_set_fallback(i915, d);
 
 	i915->uncore.fw_domains_active |= fw_domains;
 }
@@ -1142,7 +1258,8 @@ static void intel_uncore_fw_domains_init(struct drm_i915_private *dev_priv)
 	}
 
 	if (INTEL_GEN(dev_priv) >= 9) {
-		dev_priv->uncore.funcs.force_wake_get = fw_domains_get;
+		dev_priv->uncore.funcs.force_wake_get =
+			fw_domains_get_with_fallback;
 		dev_priv->uncore.funcs.force_wake_put = fw_domains_put;
 		fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
 			       FORCEWAKE_RENDER_GEN9,
