drm/i915/irq: split out display irq handling

Split (non-hotplug) display irq handling out of i915_irq.[ch] into
display/intel_display_irq.[ch].

v3:
- Preserve [I915_MAX_PIPES] harder (kernel test robot)

v2:
- Rebase
- Preserve [I915_MAX_PIPES] in functions (kernel test robot)

Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230515101738.2399816-3-jani.nikula@intel.com

13 files changed, 1761 insertions, 1711 deletions

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index cc80d483fd6f..1f4c9b99c2c9 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -238,6 +238,7 @@ i915-y += \
 	display/intel_cursor.o \
 	display/intel_display.o \
 	display/intel_display_driver.o \
+	display/intel_display_irq.o \
 	display/intel_display_power.o \
 	display/intel_display_power_map.o \
 	display/intel_display_power_well.o \
diff --git a/drivers/gpu/drm/i915/display/i9xx_plane.c b/drivers/gpu/drm/i915/display/i9xx_plane.c
index ecaeb7dc196b..616654adbfb8 100644
--- a/drivers/gpu/drm/i915/display/i9xx_plane.c
+++ b/drivers/gpu/drm/i915/display/i9xx_plane.c
@@ -8,12 +8,12 @@
 #include <drm/drm_blend.h>
 #include <drm/drm_fourcc.h>
 
-#include "i915_irq.h"
 #include "i915_reg.h"
 #include "i9xx_plane.h"
 #include "intel_atomic.h"
 #include "intel_atomic_plane.h"
 #include "intel_de.h"
+#include "intel_display_irq.h"
 #include "intel_display_types.h"
 #include "intel_fb.h"
 #include "intel_fbc.h"
diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c b/drivers/gpu/drm/i915/display/intel_crtc.c
index ecae9bf05269..93c3226b98c9 100644
--- a/drivers/gpu/drm/i915/display/intel_crtc.c
+++ b/drivers/gpu/drm/i915/display/intel_crtc.c
@@ -11,7 +11,6 @@
 #include <drm/drm_plane.h>
 #include <drm/drm_vblank_work.h>
 
-#include "i915_irq.h"
 #include "i915_vgpu.h"
 #include "i9xx_plane.h"
 #include "icl_dsi.h"
@@ -21,6 +20,7 @@
 #include "intel_crtc.h"
 #include "intel_cursor.h"
 #include "intel_display_debugfs.h"
+#include "intel_display_irq.h"
 #include "intel_display_trace.h"
 #include "intel_display_types.h"
 #include "intel_drrs.h"
diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c b/drivers/gpu/drm/i915/display/intel_display_irq.c
new file mode 100644
index 000000000000..0eedd1ebb389
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_display_irq.c
@@ -0,0 +1,1668 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "i915_irq.h"
+#include "i915_reg.h"
+#include "icl_dsi_regs.h"
+#include "intel_display_irq.h"
+#include "intel_display_types.h"
+#include "intel_hotplug_irq.h"
+#include "intel_psr_regs.h"
+#include "intel_crtc.h"
+#include "intel_display_trace.h"
+#include "intel_dp_aux.h"
+#include "intel_gmbus.h"
+#include "intel_fifo_underrun.h"
+#include "intel_psr.h"
+#include "intel_fdi_regs.h"
+#include "gt/intel_rps.h"
+#include "intel_de.h"
+
+static void
+intel_handle_vblank(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	struct intel_crtc *crtc = intel_crtc_for_pipe(dev_priv, pipe);
+
+	drm_crtc_handle_vblank(&crtc->base);
+}
+
+/**
+ * ilk_update_display_irq - update DEIMR
+ * @dev_priv: driver private
+ * @interrupt_mask: mask of interrupt bits to update
+ * @enabled_irq_mask: mask of interrupt bits to enable
+ */
+void ilk_update_display_irq(struct drm_i915_private *dev_priv,
+			    u32 interrupt_mask, u32 enabled_irq_mask)
+{
+	u32 new_val;
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+	drm_WARN_ON(&dev_priv->drm, enabled_irq_mask & ~interrupt_mask);
+
+	new_val = dev_priv->irq_mask;
+	new_val &= ~interrupt_mask;
+	new_val |= (~enabled_irq_mask & interrupt_mask);
+
+	if (new_val != dev_priv->irq_mask &&
+	    !drm_WARN_ON(&dev_priv->drm, !intel_irqs_enabled(dev_priv))) {
+		dev_priv->irq_mask = new_val;
+		intel_uncore_write(&dev_priv->uncore, DEIMR, dev_priv->irq_mask);
+		intel_uncore_posting_read(&dev_priv->uncore, DEIMR);
+	}
+}
+
+void ilk_enable_display_irq(struct drm_i915_private *i915, u32 bits)
+{
+	ilk_update_display_irq(i915, bits, bits);
+}
+
+void ilk_disable_display_irq(struct drm_i915_private *i915, u32 bits)
+{
+	ilk_update_display_irq(i915, bits, 0);
+}
+
+/**
+ * bdw_update_port_irq - update DE port interrupt
+ * @dev_priv: driver private
+ * @interrupt_mask: mask of interrupt bits to update
+ * @enabled_irq_mask: mask of interrupt bits to enable
+ */
+void bdw_update_port_irq(struct drm_i915_private *dev_priv,
+			 u32 interrupt_mask, u32 enabled_irq_mask)
+{
+	u32 new_val;
+	u32 old_val;
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+
+	drm_WARN_ON(&dev_priv->drm, enabled_irq_mask & ~interrupt_mask);
+
+	if (drm_WARN_ON(&dev_priv->drm, !intel_irqs_enabled(dev_priv)))
+		return;
+
+	old_val = intel_uncore_read(&dev_priv->uncore, GEN8_DE_PORT_IMR);
+
+	new_val = old_val;
+	new_val &= ~interrupt_mask;
+	new_val |= (~enabled_irq_mask & interrupt_mask);
+
+	if (new_val != old_val) {
+		intel_uncore_write(&dev_priv->uncore, GEN8_DE_PORT_IMR, new_val);
+		intel_uncore_posting_read(&dev_priv->uncore, GEN8_DE_PORT_IMR);
+	}
+}
+
+/**
+ * bdw_update_pipe_irq - update DE pipe interrupt
+ * @dev_priv: driver private
+ * @pipe: pipe whose interrupt to update
+ * @interrupt_mask: mask of interrupt bits to update
+ * @enabled_irq_mask: mask of interrupt bits to enable
+ */
+static void bdw_update_pipe_irq(struct drm_i915_private *dev_priv,
+				enum pipe pipe, u32 interrupt_mask,
+				u32 enabled_irq_mask)
+{
+	u32 new_val;
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+
+	drm_WARN_ON(&dev_priv->drm, enabled_irq_mask & ~interrupt_mask);
+
+	if (drm_WARN_ON(&dev_priv->drm, !intel_irqs_enabled(dev_priv)))
+		return;
+
+	new_val = dev_priv->de_irq_mask[pipe];
+	new_val &= ~interrupt_mask;
+	new_val |= (~enabled_irq_mask & interrupt_mask);
+
+	if (new_val != dev_priv->de_irq_mask[pipe]) {
+		dev_priv->de_irq_mask[pipe] = new_val;
+		intel_uncore_write(&dev_priv->uncore, GEN8_DE_PIPE_IMR(pipe), dev_priv->de_irq_mask[pipe]);
+		intel_uncore_posting_read(&dev_priv->uncore, GEN8_DE_PIPE_IMR(pipe));
+	}
+}
+
+void bdw_enable_pipe_irq(struct drm_i915_private *i915,
+			 enum pipe pipe, u32 bits)
+{
+	bdw_update_pipe_irq(i915, pipe, bits, bits);
+}
+
+void bdw_disable_pipe_irq(struct drm_i915_private *i915,
+			  enum pipe pipe, u32 bits)
+{
+	bdw_update_pipe_irq(i915, pipe, bits, 0);
+}
+
+/**
+ * ibx_display_interrupt_update - update SDEIMR
+ * @dev_priv: driver private
+ * @interrupt_mask: mask of interrupt bits to update
+ * @enabled_irq_mask: mask of interrupt bits to enable
+ */
+void ibx_display_interrupt_update(struct drm_i915_private *dev_priv,
+				  u32 interrupt_mask,
+				  u32 enabled_irq_mask)
+{
+	u32 sdeimr = intel_uncore_read(&dev_priv->uncore, SDEIMR);
+
+	sdeimr &= ~interrupt_mask;
+	sdeimr |= (~enabled_irq_mask & interrupt_mask);
+
+	drm_WARN_ON(&dev_priv->drm, enabled_irq_mask & ~interrupt_mask);
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+
+	if (drm_WARN_ON(&dev_priv->drm, !intel_irqs_enabled(dev_priv)))
+		return;
+
+	intel_uncore_write(&dev_priv->uncore, SDEIMR, sdeimr);
+	intel_uncore_posting_read(&dev_priv->uncore, SDEIMR);
+}
+
+void ibx_enable_display_interrupt(struct drm_i915_private *i915, u32 bits)
+{
+	ibx_display_interrupt_update(i915, bits, bits);
+}
+
+void ibx_disable_display_interrupt(struct drm_i915_private *i915, u32 bits)
+{
+	ibx_display_interrupt_update(i915, bits, 0);
+}
+
+u32 i915_pipestat_enable_mask(struct drm_i915_private *dev_priv,
+			      enum pipe pipe)
+{
+	u32 status_mask = dev_priv->pipestat_irq_mask[pipe];
+	u32 enable_mask = status_mask << 16;
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+
+	if (DISPLAY_VER(dev_priv) < 5)
+		goto out;
+
+	/*
+	 * On pipe A we don't support the PSR interrupt yet,
+	 * on pipe B and C the same bit MBZ.
+	 */
+	if (drm_WARN_ON_ONCE(&dev_priv->drm,
+			     status_mask & PIPE_A_PSR_STATUS_VLV))
+		return 0;
+	/*
+	 * On pipe B and C we don't support the PSR interrupt yet, on pipe
+	 * A the same bit is for perf counters which we don't use either.
+	 */
+	if (drm_WARN_ON_ONCE(&dev_priv->drm,
+			     status_mask & PIPE_B_PSR_STATUS_VLV))
+		return 0;
+
+	enable_mask &= ~(PIPE_FIFO_UNDERRUN_STATUS |
+			 SPRITE0_FLIP_DONE_INT_EN_VLV |
+			 SPRITE1_FLIP_DONE_INT_EN_VLV);
+	if (status_mask & SPRITE0_FLIP_DONE_INT_STATUS_VLV)
+		enable_mask |= SPRITE0_FLIP_DONE_INT_EN_VLV;
+	if (status_mask & SPRITE1_FLIP_DONE_INT_STATUS_VLV)
+		enable_mask |= SPRITE1_FLIP_DONE_INT_EN_VLV;
+
+out:
+	drm_WARN_ONCE(&dev_priv->drm,
+		      enable_mask & ~PIPESTAT_INT_ENABLE_MASK ||
+		      status_mask & ~PIPESTAT_INT_STATUS_MASK,
+		      "pipe %c: enable_mask=0x%x, status_mask=0x%x\n",
+		      pipe_name(pipe), enable_mask, status_mask);
+
+	return enable_mask;
+}
+
+void i915_enable_pipestat(struct drm_i915_private *dev_priv,
+			  enum pipe pipe, u32 status_mask)
+{
+	i915_reg_t reg = PIPESTAT(pipe);
+	u32 enable_mask;
+
+	drm_WARN_ONCE(&dev_priv->drm, status_mask & ~PIPESTAT_INT_STATUS_MASK,
+		      "pipe %c: status_mask=0x%x\n",
+		      pipe_name(pipe), status_mask);
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+	drm_WARN_ON(&dev_priv->drm, !intel_irqs_enabled(dev_priv));
+
+	if ((dev_priv->pipestat_irq_mask[pipe] & status_mask) == status_mask)
+		return;
+
+	dev_priv->pipestat_irq_mask[pipe] |= status_mask;
+	enable_mask = i915_pipestat_enable_mask(dev_priv, pipe);
+
+	intel_uncore_write(&dev_priv->uncore, reg, enable_mask | status_mask);
+	intel_uncore_posting_read(&dev_priv->uncore, reg);
+}
+
+void i915_disable_pipestat(struct drm_i915_private *dev_priv,
+			   enum pipe pipe, u32 status_mask)
+{
+	i915_reg_t reg = PIPESTAT(pipe);
+	u32 enable_mask;
+
+	drm_WARN_ONCE(&dev_priv->drm, status_mask & ~PIPESTAT_INT_STATUS_MASK,
+		      "pipe %c: status_mask=0x%x\n",
+		      pipe_name(pipe), status_mask);
+
+	lockdep_assert_held(&dev_priv->irq_lock);
+	drm_WARN_ON(&dev_priv->drm, !intel_irqs_enabled(dev_priv));
+
+	if ((dev_priv->pipestat_irq_mask[pipe] & status_mask) == 0)
+		return;
+
+	dev_priv->pipestat_irq_mask[pipe] &= ~status_mask;
+	enable_mask = i915_pipestat_enable_mask(dev_priv, pipe);
+
+	intel_uncore_write(&dev_priv->uncore, reg, enable_mask | status_mask);
+	intel_uncore_posting_read(&dev_priv->uncore, reg);
+}
+
+static bool i915_has_asle(struct drm_i915_private *dev_priv)
+{
+	if (!dev_priv->display.opregion.asle)
+		return false;
+
+	return IS_PINEVIEW(dev_priv) || IS_MOBILE(dev_priv);
+}
+
+/**
+ * i915_enable_asle_pipestat - enable ASLE pipestat for OpRegion
+ * @dev_priv: i915 device private
+ */
+void i915_enable_asle_pipestat(struct drm_i915_private *dev_priv)
+{
+	if (!i915_has_asle(dev_priv))
+		return;
+
+	spin_lock_irq(&dev_priv->irq_lock);
+
+	i915_enable_pipestat(dev_priv, PIPE_B, PIPE_LEGACY_BLC_EVENT_STATUS);
+	if (DISPLAY_VER(dev_priv) >= 4)
+		i915_enable_pipestat(dev_priv, PIPE_A,
+				     PIPE_LEGACY_BLC_EVENT_STATUS);
+
+	spin_unlock_irq(&dev_priv->irq_lock);
+}
+
+#if defined(CONFIG_DEBUG_FS)
+static void display_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
+					 enum pipe pipe,
+					 u32 crc0, u32 crc1,
+					 u32 crc2, u32 crc3,
+					 u32 crc4)
+{
+	struct intel_crtc *crtc = intel_crtc_for_pipe(dev_priv, pipe);
+	struct intel_pipe_crc *pipe_crc = &crtc->pipe_crc;
+	u32 crcs[5] = { crc0, crc1, crc2, crc3, crc4 };
+
+	trace_intel_pipe_crc(crtc, crcs);
+
+	spin_lock(&pipe_crc->lock);
+	/*
+	 * For some not yet identified reason, the first CRC is
+	 * bonkers. So let's just wait for the next vblank and read
+	 * out the buggy result.
+	 *
+	 * On GEN8+ sometimes the second CRC is bonkers as well, so
+	 * don't trust that one either.
+	 */
+	if (pipe_crc->skipped <= 0 ||
+	    (DISPLAY_VER(dev_priv) >= 8 && pipe_crc->skipped == 1)) {
+		pipe_crc->skipped++;
+		spin_unlock(&pipe_crc->lock);
+		return;
+	}
+	spin_unlock(&pipe_crc->lock);
+
+	drm_crtc_add_crc_entry(&crtc->base, true,
+			       drm_crtc_accurate_vblank_count(&crtc->base),
+			       crcs);
+}
+#else
+static inline void
+display_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
+			     enum pipe pipe,
+			     u32 crc0, u32 crc1,
+			     u32 crc2, u32 crc3,
+			     u32 crc4) {}
+#endif
+
+static void flip_done_handler(struct drm_i915_private *i915,
+			      enum pipe pipe)
+{
+	struct intel_crtc *crtc = intel_crtc_for_pipe(i915, pipe);
+	struct drm_crtc_state *crtc_state = crtc->base.state;
+	struct drm_pending_vblank_event *e = crtc_state->event;
+	struct drm_device *dev = &i915->drm;
+	unsigned long irqflags;
+
+	spin_lock_irqsave(&dev->event_lock, irqflags);
+
+	crtc_state->event = NULL;
+
+	drm_crtc_send_vblank_event(&crtc->base, e);
+
+	spin_unlock_irqrestore(&dev->event_lock, irqflags);
+}
+
+static void hsw_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
+				     enum pipe pipe)
+{
+	display_pipe_crc_irq_handler(dev_priv, pipe,
+				     intel_uncore_read(&dev_priv->uncore, PIPE_CRC_RES_1_IVB(pipe)),
+				     0, 0, 0, 0);
+}
+
+static void ivb_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
+				     enum pipe pipe)
+{
+	display_pipe_crc_irq_handler(dev_priv, pipe,
+				     intel_uncore_read(&dev_priv->uncore, PIPE_CRC_RES_1_IVB(pipe)),
+				     intel_uncore_read(&dev_priv->uncore, PIPE_CRC_RES_2_IVB(pipe)),
+				     intel_uncore_read(&dev_priv->uncore, PIPE_CRC_RES_3_IVB(pipe)),
+				     intel_uncore_read(&dev_priv->uncore, PIPE_CRC_RES_4_IVB(pipe)),
+				     intel_uncore_read(&dev_priv->uncore, PIPE_CRC_RES_5_IVB(pipe)));
+}
+
+static void i9xx_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
+				      enum pipe pipe)
+{
+	u32 res1, res2;
+
+	if (DISPLAY_VER(dev_priv) >= 3)
+		res1 = intel_uncore_read(&dev_priv->uncore, PIPE_CRC_RES_RES1_I915(pipe));
+	else
+		res1 = 0;
+
+	if (DISPLAY_VER(dev_priv) >= 5 || IS_G4X(dev_priv))
+		res2 = intel_uncore_read(&dev_priv->uncore, PIPE_CRC_RES_RES2_G4X(pipe));
+	else
+		res2 = 0;
+
+	display_pipe_crc_irq_handler(dev_priv, pipe,
+				     intel_uncore_read(&dev_priv->uncore, PIPE_CRC_RES_RED(pipe)),
+				     intel_uncore_read(&dev_priv->uncore, PIPE_CRC_RES_GREEN(pipe)),
+				     intel_uncore_read(&dev_priv->uncore, PIPE_CRC_RES_BLUE(pipe)),
+				     res1, res2);
+}
+
+void i9xx_pipestat_irq_reset(struct drm_i915_private *dev_priv)
+{
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe) {
+		intel_uncore_write(&dev_priv->uncore, PIPESTAT(pipe),
+				   PIPESTAT_INT_STATUS_MASK |
+				   PIPE_FIFO_UNDERRUN_STATUS);
+
+		dev_priv->pipestat_irq_mask[pipe] = 0;
+	}
+}
+
+void i9xx_pipestat_irq_ack(struct drm_i915_private *dev_priv,
+			   u32 iir, u32 pipe_stats[I915_MAX_PIPES])
+{
+	enum pipe pipe;
+
+	spin_lock(&dev_priv->irq_lock);
+
+	if (!dev_priv->display_irqs_enabled) {
+		spin_unlock(&dev_priv->irq_lock);
+		return;
+	}
+
+	for_each_pipe(dev_priv, pipe) {
+		i915_reg_t reg;
+		u32 status_mask, enable_mask, iir_bit = 0;
+
+		/*
+		 * PIPESTAT bits get signalled even when the interrupt is
+		 * disabled with the mask bits, and some of the status bits do
+		 * not generate interrupts at all (like the underrun bit). Hence
+		 * we need to be careful that we only handle what we want to
+		 * handle.
+		 */
+
+		/* fifo underruns are filterered in the underrun handler. */
+		status_mask = PIPE_FIFO_UNDERRUN_STATUS;
+
+		switch (pipe) {
+		default:
+		case PIPE_A:
+			iir_bit = I915_DISPLAY_PIPE_A_EVENT_INTERRUPT;
+			break;
+		case PIPE_B:
+			iir_bit = I915_DISPLAY_PIPE_B_EVENT_INTERRUPT;
+			break;
+		case PIPE_C:
+			iir_bit = I915_DISPLAY_PIPE_C_EVENT_INTERRUPT;
+			break;
+		}
+		if (iir & iir_bit)
+			status_mask |= dev_priv->pipestat_irq_mask[pipe];
+
+		if (!status_mask)
+			continue;
+
+		reg = PIPESTAT(pipe);
+		pipe_stats[pipe] = intel_uncore_read(&dev_priv->uncore, reg) & status_mask;
+		enable_mask = i915_pipestat_enable_mask(dev_priv, pipe);
+
+		/*
+		 * Clear the PIPE*STAT regs before the IIR
+		 *
+		 * Toggle the enable bits to make sure we get an
+		 * edge in the ISR pipe event bit if we don't clear
+		 * all the enabled status bits. Otherwise the edge
+		 * triggered IIR on i965/g4x wouldn't notice that
+		 * an interrupt is still pending.
+		 */
+		if (pipe_stats[pipe]) {
+			intel_uncore_write(&dev_priv->uncore, reg, pipe_stats[pipe]);
+			intel_uncore_write(&dev_priv->uncore, reg, enable_mask);
+		}
+	}
+	spin_unlock(&dev_priv->irq_lock);
+}
+
+void i8xx_pipestat_irq_handler(struct drm_i915_private *dev_priv,
+			       u16 iir, u32 pipe_stats[I915_MAX_PIPES])
+{
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe) {
+		if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
+			intel_handle_vblank(dev_priv, pipe);
+
+		if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
+			i9xx_pipe_crc_irq_handler(dev_priv, pipe);
+
+		if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
+			intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
+	}
+}
+
+void i915_pipestat_irq_handler(struct drm_i915_private *dev_priv,
+			       u32 iir, u32 pipe_stats[I915_MAX_PIPES])
+{
+	bool blc_event = false;
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe) {
+		if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
+			intel_handle_vblank(dev_priv, pipe);
+
+		if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
+			blc_event = true;
+
+		if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
+			i9xx_pipe_crc_irq_handler(dev_priv, pipe);
+
+		if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
+			intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
+	}
+
+	if (blc_event || (iir & I915_ASLE_INTERRUPT))
+		intel_opregion_asle_intr(dev_priv);
+}
+
+void i965_pipestat_irq_handler(struct drm_i915_private *dev_priv,
+			       u32 iir, u32 pipe_stats[I915_MAX_PIPES])
+{
+	bool blc_event = false;
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe) {
+		if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS)
+			intel_handle_vblank(dev_priv, pipe);
+
+		if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
+			blc_event = true;
+
+		if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
+			i9xx_pipe_crc_irq_handler(dev_priv, pipe);
+
+		if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
+			intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
+	}
+
+	if (blc_event || (iir & I915_ASLE_INTERRUPT))
+		intel_opregion_asle_intr(dev_priv);
+
+	if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS)
+		intel_gmbus_irq_handler(dev_priv);
+}
+
+void valleyview_pipestat_irq_handler(struct drm_i915_private *dev_priv,
+				     u32 pipe_stats[I915_MAX_PIPES])
+{
+	enum pipe pipe;
+
+	for_each_pipe(dev_priv, pipe) {
+		if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS)
+			intel_handle_vblank(dev_priv, pipe);
+
+		if (pipe_stats[pipe] & PLANE_FLIP_DONE_INT_STATUS_VLV)
+			flip_done_handler(dev_priv, pipe);
+
+		if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
+			i9xx_pipe_crc_irq_handler(dev_priv, pipe);
+
+		if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
+			intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
+	}
+
+	if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS)
+		intel_gmbus_irq_handler(dev_priv);
+}
+
+static void ibx_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
+{
+	enum pipe pipe;
+	u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK;
+
+	ibx_hpd_irq_handler(dev_priv, hotplug_trigger);
+
+	if (pch_iir & SDE_AUDIO_POWER_MASK) {
+		int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK) >>
+			       SDE_AUDIO_POWER_SHIFT);
+		drm_dbg(&dev_priv->drm, "PCH audio power change on port %d\n",
+			port_name(port));
+	}
+
+	if (pch_iir & SDE_AUX_MASK)
+		intel_dp_aux_irq_handler(dev_priv);
+
+	if (pch_iir & SDE_GMBUS)
+		intel_gmbus_irq_handler(dev_priv);
+
+	if (pch_iir & SDE_AUDIO_HDCP_MASK)
+		drm_dbg(&dev_priv->drm, "PCH HDCP audio interrupt\n");
+
+	if (pch_iir & SDE_AUDIO_TRANS_MASK)
+		drm_dbg(&dev_priv->drm, "PCH transcoder audio interrupt\n");
+
+	if (pch_iir & SDE_POISON)
+		drm_err(&dev_priv->drm, "PCH poison interrupt\n");
+
+	if (pch_iir & SDE_FDI_MASK) {
+		for_each_pipe(dev_priv, pipe)
+			drm_dbg(&dev_priv->drm, "  pipe %c FDI IIR: 0x%08x\n",
+				pipe_name(pipe),
+				intel_uncore_read(&dev_priv->uncore, FDI_RX_IIR(pipe)));
+	}
+
+	if (pch_iir & (SDE_TRANSB_CRC_DONE | SDE_TRANSA_CRC_DONE))
+		drm_dbg(&dev_priv->drm, "PCH transcoder CRC done interrupt\n");
+
+	if (pch_iir & (SDE_TRANSB_CRC_ERR | SDE_TRANSA_CRC_ERR))
+		drm_dbg(&dev_priv->drm,
+			"PCH transcoder CRC error interrupt\n");
+
+	if (pch_iir & SDE_TRANSA_FIFO_UNDER)
+		intel_pch_fifo_underrun_irq_handler(dev_priv, PIPE_A);
+
+	if (pch_iir & SDE_TRANSB_FIFO_UNDER)
+		intel_pch_fifo_underrun_irq_handler(dev_priv, PIPE_B);
+}
+
+static void ivb_err_int_handler(struct drm_i915_private *dev_priv)
+{
+	u32 err_int = intel_uncore_read(&dev_priv->uncore, GEN7_ERR_INT);
+	enum pipe pipe;
+
+	if (err_int & ERR_INT_POISON)
+		drm_err(&dev_priv->drm, "Poison interrupt\n");
+
+	for_each_pipe(dev_priv, pipe) {
+		if (err_int & ERR_INT_FIFO_UNDERRUN(pipe))
+			intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
+
+		if (err_int & ERR_INT_PIPE_CRC_DONE(pipe)) {
+			if (IS_IVYBRIDGE(dev_priv))
+				ivb_pipe_crc_irq_handler(dev_priv, pipe);
+			else
+				hsw_pipe_crc_irq_handler(dev_priv, pipe);
+		}
+	}
+
+	intel_uncore_write(&dev_priv->uncore, GEN7_ERR_INT, err_int);
+}
+
+static void cpt_serr_int_handler(struct drm_i915_private *dev_priv)
+{
+	u32 serr_int = intel_uncore_read(&dev_priv->uncore, SERR_INT);
+	enum pipe pipe;
+
+	if (serr_int & SERR_INT_POISON)
+		drm_err(&dev_priv->drm, "PCH poison interrupt\n");
+
+	for_each_pipe(dev_priv, pipe)
+		if (serr_int & SERR_INT_TRANS_FIFO_UNDERRUN(pipe))
+			intel_pch_fifo_underrun_irq_handler(dev_priv, pipe);
+
+	intel_uncore_write(&dev_priv->uncore, SERR_INT, serr_int);
+}
+
+static void cpt_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
+{
+	enum pipe pipe;
+	u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT;
+
+	ibx_hpd_irq_handler(dev_priv, hotplug_trigger);
+
+	if (pch_iir & SDE_AUDIO_POWER_MASK_CPT) {
+		int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK_CPT) >>
+			       SDE_AUDIO_POWER_SHIFT_CPT);
+		drm_dbg(&dev_priv->drm, "PCH audio power change on port %c\n",
+			port_name(port));
+	}
+
+	if (pch_iir & SDE_AUX_MASK_CPT)
+		intel_dp_aux_irq_handler(dev_priv);
+
+	if (pch_iir & SDE_GMBUS_CPT)
+		intel_gmbus_irq_handler(dev_priv);
+
+	if (pch_iir & SDE_AUDIO_CP_REQ_CPT)
+		drm_dbg(&dev_priv->drm, "Audio CP request interrupt\n");
+
+	if (pch_iir & SDE_AUDIO_CP_CHG_CPT)
+		drm_dbg(&dev_priv->drm, "Audio CP change interrupt\n");
+
+	if (pch_iir & SDE_FDI_MASK_CPT) {
+		for_each_pipe(dev_priv, pipe)
+			drm_dbg(&dev_priv->drm, "  pipe %c FDI IIR: 0x%08x\n",
+				pipe_name(pipe),
+				intel_uncore_read(&dev_priv->uncore, FDI_RX_IIR(pipe)));
+	}
+
+	if (pch_iir & SDE_ERROR_CPT)
+		cpt_serr_int_handler(dev_priv);
+}
+
+void ilk_display_irq_handler(struct drm_i915_private *dev_priv, u32 de_iir)
+{
+	enum pipe pipe;
+	u32 hotplug_trigger = de_iir & DE_DP_A_HOTPLUG;
+
+	if (hotplug_trigger)
+		ilk_hpd_irq_handler(dev_priv, hotplug_trigger);
+
+	if (de_iir & DE_AUX_CHANNEL_A)
+		intel_dp_aux_irq_handler(dev_priv);
+
+	if (de_iir & DE_GSE)
+		intel_opregion_asle_intr(dev_priv);
+
+	if (de_iir & DE_POISON)
+		drm_err(&dev_priv->drm, "Poison interrupt\n");
+
+	for_each_pipe(dev_priv, pipe) {
+		if (de_iir & DE_PIPE_VBLANK(pipe))
+			intel_handle_vblank(dev_priv, pipe);
+
+		if (de_iir & DE_PLANE_FLIP_DONE(pipe))
+			flip_done_handler(dev_priv, pipe);
+
+		if (de_iir & DE_PIPE_FIFO_UNDERRUN(pipe))
+			intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
+
+		if (de_iir & DE_PIPE_CRC_DONE(pipe))
+			i9xx_pipe_crc_irq_handler(dev_priv, pipe);
+	}
+
+	/* check event from PCH */
+	if (de_iir & DE_PCH_EVENT) {
+		u32 pch_iir = intel_uncore_read(&dev_priv->uncore, SDEIIR);
+
+		if (HAS_PCH_CPT(dev_priv))
+			cpt_irq_handler(dev_priv, pch_iir);
+		else
+			ibx_irq_handler(dev_priv, pch_iir);
+
+		/* should clear PCH hotplug event before clear CPU irq */
+		intel_uncore_write(&dev_priv->uncore, SDEIIR, pch_iir);
+	}
+
+	if (DISPLAY_VER(dev_priv) == 5 && de_iir & DE_PCU_EVENT)
+		gen5_rps_irq_handler(&to_gt(dev_priv)->rps);
+}
+
+void ivb_display_irq_handler(struct drm_i915_private *dev_priv, u32 de_iir)
+{
+	enum pipe pipe;
+	u32 hotplug_trigger = de_iir & DE_DP_A_HOTPLUG_IVB;
+
+	if (hotplug_trigger)
+		ilk_hpd_irq_handler(dev_priv, hotplug_trigger);
+
+	if (de_iir & DE_ERR_INT_IVB)
+		ivb_err_int_handler(dev_priv);
+
+	if (de_iir & DE_AUX_CHANNEL_A_IVB)
+		intel_dp_aux_irq_handler(dev_priv);
+
+	if (de_iir & DE_GSE_IVB)
+		intel_opregion_asle_intr(dev_priv);
+
+	for_each_pipe(dev_priv, pipe) {
+		if (de_iir & DE_PIPE_VBLANK_IVB(pipe))
+			intel_handle_vblank(dev_priv, pipe);
+
+		if (de_iir & DE_PLANE_FLIP_DONE_IVB(pipe))
+			flip_done_handler(dev_priv, pipe);
+	}
+
+	/* check event from PCH */
+	if (!HAS_PCH_NOP(dev_priv) && (de_iir & DE_PCH_EVENT_IVB)) {
+		u32 pch_iir = intel_uncore_read(&dev_priv->uncore, SDEIIR);
+
+		cpt_irq_handler(dev_priv, pch_iir);
+
+		/* clear PCH hotplug event before clear CPU irq */
+		intel_uncore_write(&dev_priv->uncore, SDEIIR, pch_iir);
+	}
+}
+
+static u32 gen8_de_port_aux_mask(struct drm_i915_private *dev_priv)
+{
+	u32 mask;
+
+	if (DISPLAY_VER(dev_priv) >= 14)
+		return TGL_DE_PORT_AUX_DDIA |
+			TGL_DE_PORT_AUX_DDIB;
+	else if (DISPLAY_VER(dev_priv) >= 13)
+		return TGL_DE_PORT_AUX_DDIA |
+			TGL_DE_PORT_AUX_DDIB |
+			TGL_DE_PORT_AUX_DDIC |
+			XELPD_DE_PORT_AUX_DDID |
+			XELPD_DE_PORT_AUX_DDIE |
+			TGL_DE_PORT_AUX_USBC1 |
+			TGL_DE_PORT_AUX_USBC2 |
+			TGL_DE_PORT_AUX_USBC3 |
+			TGL_DE_PORT_AUX_USBC4;
+	else if (DISPLAY_VER(dev_priv) >= 12)
+		return TGL_DE_PORT_AUX_DDIA |
+			TGL_DE_PORT_AUX_DDIB |
+			TGL_DE_PORT_AUX_DDIC |
+			TGL_DE_PORT_AUX_USBC1 |
+			TGL_DE_PORT_AUX_USBC2 |
+			TGL_DE_PORT_AUX_USBC3 |
+			TGL_DE_PORT_AUX_USBC4 |
+			TGL_DE_PORT_AUX_USBC5 |
+			TGL_DE_PORT_AUX_USBC6;
+
+	mask = GEN8_AUX_CHANNEL_A;
+	if (DISPLAY_VER(dev_priv) >= 9)
+		mask |= GEN9_AUX_CHANNEL_B |
+			GEN9_AUX_CHANNEL_C |
+			GEN9_AUX_CHANNEL_D;
+
+	if (DISPLAY_VER(dev_priv) == 11) {
+		mask |= ICL_AUX_CHANNEL_F;
+		mask |= ICL_AUX_CHANNEL_E;
+	}
+
+	return mask;
+}
+
+static u32 gen8_de_pipe_fault_mask(struct drm_i915_private *dev_priv)
+{
+	if (DISPLAY_VER(dev_priv) >= 13 || HAS_D12_PLANE_MINIMIZATION(dev_priv))
+		return RKL_DE_PIPE_IRQ_FAULT_ERRORS;
+	else if (DISPLAY_VER(dev_priv) >= 11)
+		return GEN11_DE_PIPE_IRQ_FAULT_ERRORS;
+	else if (DISPLAY_VER(dev_priv) >= 9)
+		return GEN9_DE_PIPE_IRQ_FAULT_ERRORS;
+	else
+		return GEN8_DE_PIPE_IRQ_FAULT_ERRORS;
+}
+
+static void
+gen8_de_misc_irq_handler(struct drm_i915_private *dev_priv, u32 iir)
+{
+	bool found = false;
+
+	if (iir & GEN8_DE_MISC_GSE) {
+		intel_opregion_asle_intr(dev_priv);
+		found = true;
+	}
+
+	if (iir & GEN8_DE_EDP_PSR) {
+		struct intel_encoder *encoder;
+		u32 psr_iir;
+		i915_reg_t iir_reg;
+
+		for_each_intel_encoder_with_psr(&dev_priv->drm, encoder) {
+			struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+			if (DISPLAY_VER(dev_priv) >= 12)
+				iir_reg = TRANS_PSR_IIR(intel_dp->psr.transcoder);
+			else
+				iir_reg = EDP_PSR_IIR;
+
+			psr_iir = intel_uncore_rmw(&dev_priv->uncore, iir_reg, 0, 0);
+
+			if (psr_iir)
+				found = true;
+
+			intel_psr_irq_handler(intel_dp, psr_iir);
+
+			/* prior GEN12 only have one EDP PSR */
+			if (DISPLAY_VER(dev_priv) < 12)
+				break;
+		}
+	}
+
+	if (!found)
+		drm_err(&dev_priv->drm, "Unexpected DE Misc interrupt\n");
+}
+
+static void gen11_dsi_te_interrupt_handler(struct drm_i915_private *dev_priv,
+					   u32 te_trigger)
+{
+	enum pipe pipe = INVALID_PIPE;
+	enum transcoder dsi_trans;
+	enum port port;
+	u32 val, tmp;
+
+	/*
+	 * Incase of dual link, TE comes from DSI_1
+	 * this is to check if dual link is enabled
+	 */
+	val = intel_uncore_read(&dev_priv->uncore, TRANS_DDI_FUNC_CTL2(TRANSCODER_DSI_0));
+	val &= PORT_SYNC_MODE_ENABLE;
+
+	/*
+	 * if dual link is enabled, then read DSI_0
+	 * transcoder registers
+	 */
+	port = ((te_trigger & DSI1_TE && val) || (te_trigger & DSI0_TE)) ?
+						  PORT_A : PORT_B;
+	dsi_trans = (port == PORT_A) ? TRANSCODER_DSI_0 : TRANSCODER_DSI_1;
+
+	/* Check if DSI configured in command mode */
+	val = intel_uncore_read(&dev_priv->uncore, DSI_TRANS_FUNC_CONF(dsi_trans));
+	val = val & OP_MODE_MASK;
+
+	if (val != CMD_MODE_NO_GATE && val != CMD_MODE_TE_GATE) {
+		drm_err(&dev_priv->drm, "DSI trancoder not configured in command mode\n");
+		return;
+	}
+
+	/* Get PIPE for handling VBLANK event */
+	val = intel_uncore_read(&dev_priv->uncore, TRANS_DDI_FUNC_CTL(dsi_trans));
+	switch (val & TRANS_DDI_EDP_INPUT_MASK) {
+	case TRANS_DDI_EDP_INPUT_A_ON:
+		pipe = PIPE_A;
+		break;
+	case TRANS_DDI_EDP_INPUT_B_ONOFF:
+		pipe = PIPE_B;
+		break;
+	case TRANS_DDI_EDP_INPUT_C_ONOFF:
+		pipe = PIPE_C;
+		break;
+	default:
+		drm_err(&dev_priv->drm, "Invalid PIPE\n");
+		return;
+	}
+
+	intel_handle_vblank(dev_priv, pipe);
+
+	/* clear TE in dsi IIR */
+	port = (te_trigger & DSI1_TE) ? PORT_B : PORT_A;
+	tmp = intel_uncore_rmw(&dev_priv->uncore, DSI_INTR_IDENT_REG(port), 0, 0);
+}
+
+static u32 gen8_de_pipe_flip_done_mask(struct drm_i915_private *i915)