1 files changed, 307 insertions, 50 deletions

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index b886bd459acc..633c18785c1e 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -415,6 +415,9 @@ void gen6_enable_rps_interrupts(struct drm_i915_private *dev_priv)
 	if (READ_ONCE(rps->interrupts_enabled))
 		return;
 
+	if (WARN_ON_ONCE(IS_GEN11(dev_priv)))
+		return;
+
 	spin_lock_irq(&dev_priv->irq_lock);
 	WARN_ON_ONCE(rps->pm_iir);
 	WARN_ON_ONCE(I915_READ(gen6_pm_iir(dev_priv)) & dev_priv->pm_rps_events);
@@ -431,6 +434,9 @@ void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv)
 	if (!READ_ONCE(rps->interrupts_enabled))
 		return;
 
+	if (WARN_ON_ONCE(IS_GEN11(dev_priv)))
+		return;
+
 	spin_lock_irq(&dev_priv->irq_lock);
 	rps->interrupts_enabled = false;
 
@@ -1071,7 +1077,7 @@ static void ironlake_rps_change_irq_handler(struct drm_i915_private *dev_priv)
 
 static void notify_ring(struct intel_engine_cs *engine)
 {
-	struct drm_i915_gem_request *rq = NULL;
+	struct i915_request *rq = NULL;
 	struct intel_wait *wait;
 
 	if (!engine->breadcrumbs.irq_armed)
@@ -1098,13 +1104,13 @@ static void notify_ring(struct intel_engine_cs *engine)
 		 */
 		if (i915_seqno_passed(intel_engine_get_seqno(engine),
 				      wait->seqno)) {
-			struct drm_i915_gem_request *waiter = wait->request;
+			struct i915_request *waiter = wait->request;
 
 			wakeup = true;
 			if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
 				      &waiter->fence.flags) &&
 			    intel_wait_check_request(wait, waiter))
-				rq = i915_gem_request_get(waiter);
+				rq = i915_request_get(waiter);
 		}
 
 		if (wakeup)
@@ -1117,7 +1123,8 @@ static void notify_ring(struct intel_engine_cs *engine)
 
 	if (rq) {
 		dma_fence_signal(&rq->fence);
-		i915_gem_request_put(rq);
+		GEM_BUG_ON(!i915_request_completed(rq));
+		i915_request_put(rq);
 	}
 
 	trace_intel_engine_notify(engine, wait);
@@ -1413,64 +1420,73 @@ gen8_cs_irq_handler(struct intel_engine_cs *engine, u32 iir, int test_shift)
 		tasklet_hi_schedule(&execlists->tasklet);
 }
 
-static void gen8_gt_irq_ack(struct drm_i915_private *dev_priv,
+static void gen8_gt_irq_ack(struct drm_i915_private *i915,
 			    u32 master_ctl, u32 gt_iir[4])
 {
+	void __iomem * const regs = i915->regs;
+
+#define GEN8_GT_IRQS (GEN8_GT_RCS_IRQ | \
+		      GEN8_GT_BCS_IRQ | \
+		      GEN8_GT_VCS1_IRQ | \
+		      GEN8_GT_VCS2_IRQ | \
+		      GEN8_GT_VECS_IRQ | \
+		      GEN8_GT_PM_IRQ | \
+		      GEN8_GT_GUC_IRQ)
+
 	if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) {
-		gt_iir[0] = I915_READ_FW(GEN8_GT_IIR(0));
-		if (gt_iir[0])
-			I915_WRITE_FW(GEN8_GT_IIR(0), gt_iir[0]);
+		gt_iir[0] = raw_reg_read(regs, GEN8_GT_IIR(0));
+		if (likely(gt_iir[0]))
+			raw_reg_write(regs, GEN8_GT_IIR(0), gt_iir[0]);
 	}
 
 	if (master_ctl & (GEN8_GT_VCS1_IRQ | GEN8_GT_VCS2_IRQ)) {
-		gt_iir[1] = I915_READ_FW(GEN8_GT_IIR(1));
-		if (gt_iir[1])
-			I915_WRITE_FW(GEN8_GT_IIR(1), gt_iir[1]);
+		gt_iir[1] = raw_reg_read(regs, GEN8_GT_IIR(1));
+		if (likely(gt_iir[1]))
+			raw_reg_write(regs, GEN8_GT_IIR(1), gt_iir[1]);
 	}
 
-	if (master_ctl & GEN8_GT_VECS_IRQ) {
-		gt_iir[3] = I915_READ_FW(GEN8_GT_IIR(3));
-		if (gt_iir[3])
-			I915_WRITE_FW(GEN8_GT_IIR(3), gt_iir[3]);
+	if (master_ctl & (GEN8_GT_PM_IRQ | GEN8_GT_GUC_IRQ)) {
+		gt_iir[2] = raw_reg_read(regs, GEN8_GT_IIR(2));
+		if (likely(gt_iir[2] & (i915->pm_rps_events |
+					i915->pm_guc_events)))
+			raw_reg_write(regs, GEN8_GT_IIR(2),
+				      gt_iir[2] & (i915->pm_rps_events |
+						   i915->pm_guc_events));
 	}
 
-	if (master_ctl & (GEN8_GT_PM_IRQ | GEN8_GT_GUC_IRQ)) {
-		gt_iir[2] = I915_READ_FW(GEN8_GT_IIR(2));
-		if (gt_iir[2] & (dev_priv->pm_rps_events |
-				 dev_priv->pm_guc_events)) {
-			I915_WRITE_FW(GEN8_GT_IIR(2),
-				      gt_iir[2] & (dev_priv->pm_rps_events |
-						   dev_priv->pm_guc_events));
-		}
+	if (master_ctl & GEN8_GT_VECS_IRQ) {
+		gt_iir[3] = raw_reg_read(regs, GEN8_GT_IIR(3));
+		if (likely(gt_iir[3]))
+			raw_reg_write(regs, GEN8_GT_IIR(3), gt_iir[3]);
 	}
 }
 
-static void gen8_gt_irq_handler(struct drm_i915_private *dev_priv,
-				u32 gt_iir[4])
+static void gen8_gt_irq_handler(struct drm_i915_private *i915,
+				u32 master_ctl, u32 gt_iir[4])
 {
-	if (gt_iir[0]) {
-		gen8_cs_irq_handler(dev_priv->engine[RCS],
+	if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) {
+		gen8_cs_irq_handler(i915->engine[RCS],
 				    gt_iir[0], GEN8_RCS_IRQ_SHIFT);
-		gen8_cs_irq_handler(dev_priv->engine[BCS],
+		gen8_cs_irq_handler(i915->engine[BCS],
 				    gt_iir[0], GEN8_BCS_IRQ_SHIFT);
 	}
 
-	if (gt_iir[1]) {
-		gen8_cs_irq_handler(dev_priv->engine[VCS],
+	if (master_ctl & (GEN8_GT_VCS1_IRQ | GEN8_GT_VCS2_IRQ)) {
+		gen8_cs_irq_handler(i915->engine[VCS],
 				    gt_iir[1], GEN8_VCS1_IRQ_SHIFT);
-		gen8_cs_irq_handler(dev_priv->engine[VCS2],
+		gen8_cs_irq_handler(i915->engine[VCS2],
 				    gt_iir[1], GEN8_VCS2_IRQ_SHIFT);
 	}
 
-	if (gt_iir[3])
-		gen8_cs_irq_handler(dev_priv->engine[VECS],
+	if (master_ctl & GEN8_GT_VECS_IRQ) {
+		gen8_cs_irq_handler(i915->engine[VECS],
 				    gt_iir[3], GEN8_VECS_IRQ_SHIFT);
+	}
 
-	if (gt_iir[2] & dev_priv->pm_rps_events)
-		gen6_rps_irq_handler(dev_priv, gt_iir[2]);
-
-	if (gt_iir[2] & dev_priv->pm_guc_events)
-		gen9_guc_irq_handler(dev_priv, gt_iir[2]);
+	if (master_ctl & (GEN8_GT_PM_IRQ | GEN8_GT_GUC_IRQ)) {
+		gen6_rps_irq_handler(i915, gt_iir[2]);
+		gen9_guc_irq_handler(i915, gt_iir[2]);
+	}
 }
 
 static bool bxt_port_hotplug_long_detect(enum port port, u32 val)
@@ -2085,9 +2101,9 @@ static irqreturn_t cherryview_irq_handler(int irq, void *arg)
 
 	do {
 		u32 master_ctl, iir;
-		u32 gt_iir[4] = {};
 		u32 pipe_stats[I915_MAX_PIPES] = {};
 		u32 hotplug_status = 0;
+		u32 gt_iir[4];
 		u32 ier = 0;
 
 		master_ctl = I915_READ(GEN8_MASTER_IRQ) & ~GEN8_MASTER_IRQ_CONTROL;
@@ -2140,7 +2156,7 @@ static irqreturn_t cherryview_irq_handler(int irq, void *arg)
 		I915_WRITE(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL);
 		POSTING_READ(GEN8_MASTER_IRQ);
 
-		gen8_gt_irq_handler(dev_priv, gt_iir);
+		gen8_gt_irq_handler(dev_priv, master_ctl, gt_iir);
 
 		if (hotplug_status)
 			i9xx_hpd_irq_handler(dev_priv, hotplug_status);
@@ -2675,10 +2691,9 @@ gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
 
 static irqreturn_t gen8_irq_handler(int irq, void *arg)
 {
-	struct drm_device *dev = arg;
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = to_i915(arg);
 	u32 master_ctl;
-	u32 gt_iir[4] = {};
+	u32 gt_iir[4];
 
 	if (!intel_irqs_enabled(dev_priv))
 		return IRQ_NONE;
@@ -2690,18 +2705,19 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg)
 
 	I915_WRITE_FW(GEN8_MASTER_IRQ, 0);
 
-	/* IRQs are synced during runtime_suspend, we don't require a wakeref */
-	disable_rpm_wakeref_asserts(dev_priv);
-
 	/* Find, clear, then process each source of interrupt */
 	gen8_gt_irq_ack(dev_priv, master_ctl, gt_iir);
-	gen8_gt_irq_handler(dev_priv, gt_iir);
-	gen8_de_irq_handler(dev_priv, master_ctl);
+
+	/* IRQs are synced during runtime_suspend, we don't require a wakeref */
+	if (master_ctl & ~GEN8_GT_IRQS) {
+		disable_rpm_wakeref_asserts(dev_priv);
+		gen8_de_irq_handler(dev_priv, master_ctl);
+		enable_rpm_wakeref_asserts(dev_priv);
+	}
 
 	I915_WRITE_FW(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL);
-	POSTING_READ_FW(GEN8_MASTER_IRQ);
 
-	enable_rpm_wakeref_asserts(dev_priv);
+	gen8_gt_irq_handler(dev_priv, master_ctl, gt_iir);
 
 	return IRQ_HANDLED;
 }
@@ -2746,6 +2762,156 @@ static void __fini_wedge(struct wedge_me *w)
 	     (W)->i915;							\
 	     __fini_wedge((W)))
 
+static __always_inline void
+gen11_cs_irq_handler(struct intel_engine_cs * const engine, const u32 iir)
+{
+	gen8_cs_irq_handler(engine, iir, 0);
+}
+
+static void
+gen11_gt_engine_irq_handler(struct drm_i915_private * const i915,
+			    const unsigned int bank,
+			    const unsigned int engine_n,
+			    const u16 iir)
+{
+	struct intel_engine_cs ** const engine = i915->engine;
+
+	switch (bank) {
+	case 0:
+		switch (engine_n) {
+
+		case GEN11_RCS0:
+			return gen11_cs_irq_handler(engine[RCS], iir);
+
+		case GEN11_BCS:
+			return gen11_cs_irq_handler(engine[BCS], iir);
+		}
+	case 1:
+		switch (engine_n) {
+
+		case GEN11_VCS(0):
+			return gen11_cs_irq_handler(engine[_VCS(0)], iir);
+		case GEN11_VCS(1):
+			return gen11_cs_irq_handler(engine[_VCS(1)], iir);
+		case GEN11_VCS(2):
+			return gen11_cs_irq_handler(engine[_VCS(2)], iir);
+		case GEN11_VCS(3):
+			return gen11_cs_irq_handler(engine[_VCS(3)], iir);
+
+		case GEN11_VECS(0):
+			return gen11_cs_irq_handler(engine[_VECS(0)], iir);
+		case GEN11_VECS(1):
+			return gen11_cs_irq_handler(engine[_VECS(1)], iir);
+		}
+	}
+}
+
+static u32
+gen11_gt_engine_intr(struct drm_i915_private * const i915,
+		     const unsigned int bank, const unsigned int bit)
+{
+	void __iomem * const regs = i915->regs;
+	u32 timeout_ts;
+	u32 ident;
+
+	raw_reg_write(regs, GEN11_IIR_REG_SELECTOR(bank), BIT(bit));
+
+	/*
+	 * NB: Specs do not specify how long to spin wait,
+	 * so we do ~100us as an educated guess.
+	 */
+	timeout_ts = (local_clock() >> 10) + 100;
+	do {
+		ident = raw_reg_read(regs, GEN11_INTR_IDENTITY_REG(bank));
+	} while (!(ident & GEN11_INTR_DATA_VALID) &&
+		 !time_after32(local_clock() >> 10, timeout_ts));
+
+	if (unlikely(!(ident & GEN11_INTR_DATA_VALID))) {
+		DRM_ERROR("INTR_IDENTITY_REG%u:%u 0x%08x not valid!\n",
+			  bank, bit, ident);
+		return 0;
+	}
+
+	raw_reg_write(regs, GEN11_INTR_IDENTITY_REG(bank),
+		      GEN11_INTR_DATA_VALID);
+
+	return ident & GEN11_INTR_ENGINE_MASK;
+}
+
+static void
+gen11_gt_irq_handler(struct drm_i915_private * const i915,
+		     const u32 master_ctl)
+{
+	void __iomem * const regs = i915->regs;
+	unsigned int bank;
+
+	for (bank = 0; bank < 2; bank++) {
+		unsigned long intr_dw;
+		unsigned int bit;
+
+		if (!(master_ctl & GEN11_GT_DW_IRQ(bank)))
+			continue;
+
+		intr_dw = raw_reg_read(regs, GEN11_GT_INTR_DW(bank));
+
+		if (unlikely(!intr_dw)) {
+			DRM_ERROR("GT_INTR_DW%u blank!\n", bank);
+			continue;
+		}
+
+		for_each_set_bit(bit, &intr_dw, 32) {
+			const u16 iir = gen11_gt_engine_intr(i915, bank, bit);
+
+			if (unlikely(!iir))
+				continue;
+
+			gen11_gt_engine_irq_handler(i915, bank, bit, iir);
+		}
+
+		/* Clear must be after shared has been served for engine */
+		raw_reg_write(regs, GEN11_GT_INTR_DW(bank), intr_dw);
+	}
+}
+
+static irqreturn_t gen11_irq_handler(int irq, void *arg)
+{
+	struct drm_i915_private * const i915 = to_i915(arg);
+	void __iomem * const regs = i915->regs;
+	u32 master_ctl;
+
+	if (!intel_irqs_enabled(i915))
+		return IRQ_NONE;
+
+	master_ctl = raw_reg_read(regs, GEN11_GFX_MSTR_IRQ);
+	master_ctl &= ~GEN11_MASTER_IRQ;
+	if (!master_ctl)
+		return IRQ_NONE;
+
+	/* Disable interrupts. */
+	raw_reg_write(regs, GEN11_GFX_MSTR_IRQ, 0);
+
+	/* Find, clear, then process each source of interrupt. */
+	gen11_gt_irq_handler(i915, master_ctl);
+
+	/* IRQs are synced during runtime_suspend, we don't require a wakeref */
+	if (master_ctl & GEN11_DISPLAY_IRQ) {
+		const u32 disp_ctl = raw_reg_read(regs, GEN11_DISPLAY_INT_CTL);
+
+		disable_rpm_wakeref_asserts(i915);
+		/*
+		 * GEN11_DISPLAY_INT_CTL has same format as GEN8_MASTER_IRQ
+		 * for the display related bits.
+		 */
+		gen8_de_irq_handler(i915, disp_ctl);
+		enable_rpm_wakeref_asserts(i915);
+	}
+
+	/* Acknowledge and enable interrupts. */
+	raw_reg_write(regs, GEN11_GFX_MSTR_IRQ, GEN11_MASTER_IRQ | master_ctl);
+
+	return IRQ_HANDLED;
+}
+
 /**
  * i915_reset_device - do process context error handling work
  * @dev_priv: i915 device private
@@ -2951,6 +3117,12 @@ static int ironlake_enable_vblank(struct drm_device *dev, unsigned int pipe)
 	ilk_enable_display_irq(dev_priv, bit);
 	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
 
+	/* Even though there is no DMC, frame counter can get stuck when
+	 * PSR is active as no frames are generated.
+	 */
+	if (HAS_PSR(dev_priv))
+		drm_vblank_restore(dev, pipe);
+
 	return 0;
 }
 
@@ -2963,6 +3135,12 @@ static int gen8_enable_vblank(struct drm_device *dev, unsigned int pipe)
 	bdw_enable_pipe_irq(dev_priv, pipe, GEN8_PIPE_VBLANK);
 	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
 
+	/* Even if there is no DMC, frame counter can get stuck when
+	 * PSR is active as no frames are generated, so check only for PSR.
+	 */
+	if (HAS_PSR(dev_priv))
+		drm_vblank_restore(dev, pipe);
+
 	return 0;
 }
 
@@ -3159,6 +3337,42 @@ static void gen8_irq_reset(struct drm_device *dev)
 		ibx_irq_reset(dev_priv);
 }
 
+static void gen11_gt_irq_reset(struct drm_i915_private *dev_priv)
+{
+	/* Disable RCS, BCS, VCS and VECS class engines. */
+	I915_WRITE(GEN11_RENDER_COPY_INTR_ENABLE, 0);
+	I915_WRITE(GEN11_VCS_VECS_INTR_ENABLE,	  0);
+
+	/* Restore masks irqs on RCS, BCS, VCS and VECS engines. */
+	I915_WRITE(GEN11_RCS0_RSVD_INTR_MASK,	~0);
+	I915_WRITE(GEN11_BCS_RSVD_INTR_MASK,	~0);
+	I915_WRITE(GEN11_VCS0_VCS1_INTR_MASK,	~0);
+	I915_WRITE(GEN11_VCS2_VCS3_INTR_MASK,	~0);
+	I915_WRITE(GEN11_VECS0_VECS1_INTR_MASK,	~0);
+}
+
+static void gen11_irq_reset(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int pipe;
+
+	I915_WRITE(GEN11_GFX_MSTR_IRQ, 0);
+	POSTING_READ(GEN11_GFX_MSTR_IRQ);
+
+	gen11_gt_irq_reset(dev_priv);
+
+	I915_WRITE(GEN11_DISPLAY_INT_CTL, 0);
+
+	for_each_pipe(dev_priv, pipe)
+		if (intel_display_power_is_enabled(dev_priv,
+						   POWER_DOMAIN_PIPE(pipe)))
+			GEN8_IRQ_RESET_NDX(DE_PIPE, pipe);
+
+	GEN3_IRQ_RESET(GEN8_DE_PORT_);
+	GEN3_IRQ_RESET(GEN8_DE_MISC_);
+	GEN3_IRQ_RESET(GEN8_PCU_);
+}
+
 void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv,
 				     u8 pipe_mask)
 {
@@ -3656,6 +3870,41 @@ static int gen8_irq_postinstall(struct drm_device *dev)
 	return 0;
 }
 
+static void gen11_gt_irq_postinstall(struct drm_i915_private *dev_priv)
+{
+	const u32 irqs = GT_RENDER_USER_INTERRUPT | GT_CONTEXT_SWITCH_INTERRUPT;
+
+	BUILD_BUG_ON(irqs & 0xffff0000);
+
+	/* Enable RCS, BCS, VCS and VECS class interrupts. */
+	I915_WRITE(GEN11_RENDER_COPY_INTR_ENABLE, irqs << 16 | irqs);
+	I915_WRITE(GEN11_VCS_VECS_INTR_ENABLE,	  irqs << 16 | irqs);
+
+	/* Unmask irqs on RCS, BCS, VCS and VECS engines. */
+	I915_WRITE(GEN11_RCS0_RSVD_INTR_MASK,	~(irqs << 16));
+	I915_WRITE(GEN11_BCS_RSVD_INTR_MASK,	~(irqs << 16));
+	I915_WRITE(GEN11_VCS0_VCS1_INTR_MASK,	~(irqs | irqs << 16));
+	I915_WRITE(GEN11_VCS2_VCS3_INTR_MASK,	~(irqs | irqs << 16));
+	I915_WRITE(GEN11_VECS0_VECS1_INTR_MASK,	~(irqs | irqs << 16));
+
+	dev_priv->pm_imr = 0xffffffff; /* TODO */
+}
+
+static int gen11_irq_postinstall(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	gen11_gt_irq_postinstall(dev_priv);
+	gen8_de_irq_postinstall(dev_priv);
+
+	I915_WRITE(GEN11_DISPLAY_INT_CTL, GEN11_DISPLAY_IRQ_ENABLE);
+
+	I915_WRITE(GEN11_GFX_MSTR_IRQ, GEN11_MASTER_IRQ);
+	POSTING_READ(GEN11_GFX_MSTR_IRQ);
+
+	return 0;
+}
+
 static int cherryview_irq_postinstall(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -4104,6 +4353,14 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
 		dev->driver->enable_vblank = i965_enable_vblank;
 		dev->driver->disable_vblank = i965_disable_vblank;
 		dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup;
+	} else if (INTEL_GEN(dev_priv) >= 11) {
+		dev->driver->irq_handler = gen11_irq_handler;
+		dev->driver->irq_preinstall = gen11_irq_reset;
+		dev->driver->irq_postinstall = gen11_irq_postinstall;
+		dev->driver->irq_uninstall = gen11_irq_reset;
+		dev->driver->enable_vblank = gen8_enable_vblank;
+		dev->driver->disable_vblank = gen8_disable_vblank;
+		dev_priv->display.hpd_irq_setup = spt_hpd_irq_setup;
 	} else if (INTEL_GEN(dev_priv) >= 8) {
 		dev->driver->irq_handler = gen8_irq_handler;
 		dev->driver->irq_preinstall = gen8_irq_reset;