[2/6] intel_gt_irq

Submitted by Andi Shyti on Aug. 7, 2019, 7:11 a.m.

Details

Message ID 20190807071139.30787-2-andi.shyti@intel.com
State New
Headers show
Series "Series without cover letter" ( rev: 1 ) in Intel GFX - Try Bot

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Commit Message

Andi Shyti Aug. 7, 2019, 7:11 a.m.
---
 drivers/gpu/drm/i915/Makefile            |   1 +
 drivers/gpu/drm/i915/gt/intel_gt_irq.c   | 455 +++++++++++++++++++++++
 drivers/gpu/drm/i915/gt/intel_gt_irq.h   |  44 +++
 drivers/gpu/drm/i915/gt/intel_gt_types.h |   1 +
 drivers/gpu/drm/i915/i915_irq.c          |  11 +-
 drivers/gpu/drm/i915/i915_irq.h          |  52 ++-
 6 files changed, 546 insertions(+), 18 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/gt/intel_gt_irq.c
 create mode 100644 drivers/gpu/drm/i915/gt/intel_gt_irq.h

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diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index eb1c3eb47547..d2b52c4b41e1 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -76,6 +76,7 @@  gt-y += \
 	gt/intel_engine_pm.o \
 	gt/intel_engine_user.o \
 	gt/intel_gt.o \
+	gt/intel_gt_irq.o \
 	gt/intel_gt_pm.o \
 	gt/intel_gt_pm_irq.o \
 	gt/intel_hangcheck.o \
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_irq.c b/drivers/gpu/drm/i915/gt/intel_gt_irq.c
new file mode 100644
index 000000000000..c213fedd4dac
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/intel_gt_irq.c
@@ -0,0 +1,455 @@ 
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <linux/sched/clock.h>
+
+#include "i915_drv.h"
+#include "intel_gt.h"
+#include "intel_gt_irq.h"
+#include "intel_uncore.h"
+
+static void guc_irq_handler(struct intel_guc *guc, u16 iir)
+{
+	if (iir & GUC_INTR_GUC2HOST)
+		intel_guc_to_host_event_handler(guc);
+}
+
+static void
+cs_irq_handler(struct intel_engine_cs *engine, u32 iir)
+{
+	bool tasklet = false;
+
+	if (iir & GT_CONTEXT_SWITCH_INTERRUPT)
+		tasklet = true;
+
+	if (iir & GT_RENDER_USER_INTERRUPT) {
+		intel_engine_breadcrumbs_irq(engine);
+		tasklet |= intel_engine_needs_breadcrumb_tasklet(engine);
+	}
+
+	if (tasklet)
+		tasklet_hi_schedule(&engine->execlists.tasklet);
+}
+
+static u32
+gen11_gt_engine_identity(struct intel_gt *gt,
+			 const unsigned int bank, const unsigned int bit)
+{
+	void __iomem * const regs = gt->uncore->regs;
+	u32 timeout_ts;
+	u32 ident;
+
+	lockdep_assert_held(&gt->irq_lock);
+
+	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;
+}
+
+static void
+gen11_other_irq_handler(struct intel_gt *gt, const u8 instance,
+			const u16 iir)
+{
+	if (instance == OTHER_GUC_INSTANCE)
+		return guc_irq_handler(&gt->uc.guc, iir);
+
+	if (instance == OTHER_GTPM_INSTANCE)
+		return gen11_rps_irq_handler(&gt->rps, iir);
+
+	WARN_ONCE(1, "unhandled other interrupt instance=0x%x, iir=0x%x\n",
+		  instance, iir);
+}
+
+static void
+gen11_engine_irq_handler(struct intel_gt *gt, const u8 class,
+			 const u8 instance, const u16 iir)
+{
+	struct intel_engine_cs *engine;
+
+	if (instance <= MAX_ENGINE_INSTANCE)
+		engine = gt->engine_class[class][instance];
+	else
+		engine = NULL;
+
+	if (likely(engine))
+		return cs_irq_handler(engine, iir);
+
+	WARN_ONCE(1, "unhandled engine interrupt class=0x%x, instance=0x%x\n",
+		  class, instance);
+}
+
+static void
+gen11_gt_identity_handler(struct intel_gt *gt, const u32 identity)
+{
+	const u8 class = GEN11_INTR_ENGINE_CLASS(identity);
+	const u8 instance = GEN11_INTR_ENGINE_INSTANCE(identity);
+	const u16 intr = GEN11_INTR_ENGINE_INTR(identity);
+
+	if (unlikely(!intr))
+		return;
+
+	if (class <= COPY_ENGINE_CLASS)
+		return gen11_engine_irq_handler(gt, class, instance, intr);
+
+	if (class == OTHER_CLASS)
+		return gen11_other_irq_handler(gt, instance, intr);
+
+	WARN_ONCE(1, "unknown interrupt class=0x%x, instance=0x%x, intr=0x%x\n",
+		  class, instance, intr);
+}
+
+static void
+gen11_gt_bank_handler(struct intel_gt *gt, const unsigned int bank)
+{
+	void __iomem * const regs = gt->uncore->regs;
+	unsigned long intr_dw;
+	unsigned int bit;
+
+	lockdep_assert_held(&gt->irq_lock);
+
+	intr_dw = raw_reg_read(regs, GEN11_GT_INTR_DW(bank));
+
+	for_each_set_bit(bit, &intr_dw, 32) {
+		const u32 ident = gen11_gt_engine_identity(gt, bank, bit);
+
+		gen11_gt_identity_handler(gt, ident);
+	}
+
+	/* Clear must be after shared has been served for engine */
+	raw_reg_write(regs, GEN11_GT_INTR_DW(bank), intr_dw);
+}
+
+void gen11_gt_irq_handler(struct intel_gt *gt, const u32 master_ctl)
+{
+	unsigned int bank;
+
+	spin_lock(&gt->irq_lock);
+
+	for (bank = 0; bank < 2; bank++) {
+		if (master_ctl & GEN11_GT_DW_IRQ(bank))
+			gen11_gt_bank_handler(gt, bank);
+	}
+
+	spin_unlock(&gt->irq_lock);
+}
+
+bool gen11_gt_reset_one_iir(struct intel_gt *gt,
+			    const unsigned int bank,
+			    const unsigned int bit)
+{
+	void __iomem * const regs = gt->uncore->regs;
+	u32 dw;
+
+	lockdep_assert_held(&gt->irq_lock);
+
+	dw = raw_reg_read(regs, GEN11_GT_INTR_DW(bank));
+	if (dw & BIT(bit)) {
+		/*
+		 * According to the BSpec, DW_IIR bits cannot be cleared without
+		 * first servicing the Selector & Shared IIR registers.
+		 */
+		gen11_gt_engine_identity(gt, bank, bit);
+
+		/*
+		 * We locked GT INT DW by reading it. If we want to (try
+		 * to) recover from this successfully, we need to clear
+		 * our bit, otherwise we are locking the register for
+		 * everybody.
+		 */
+		raw_reg_write(regs, GEN11_GT_INTR_DW(bank), BIT(bit));
+
+		return true;
+	}
+
+	return false;
+}
+
+void gen11_gt_irq_reset(struct intel_gt *gt)
+{
+	struct intel_uncore *uncore = gt->uncore;
+
+	/* Disable RCS, BCS, VCS and VECS class engines. */
+	intel_uncore_write(uncore, GEN11_RENDER_COPY_INTR_ENABLE, 0);
+	intel_uncore_write(uncore, GEN11_VCS_VECS_INTR_ENABLE,	  0);
+
+	/* Restore masks irqs on RCS, BCS, VCS and VECS engines. */
+	intel_uncore_write(uncore, GEN11_RCS0_RSVD_INTR_MASK,	~0);
+	intel_uncore_write(uncore, GEN11_BCS_RSVD_INTR_MASK,	~0);
+	intel_uncore_write(uncore, GEN11_VCS0_VCS1_INTR_MASK,	~0);
+	intel_uncore_write(uncore, GEN11_VCS2_VCS3_INTR_MASK,	~0);
+	intel_uncore_write(uncore, GEN11_VECS0_VECS1_INTR_MASK,	~0);
+
+	intel_uncore_write(uncore, GEN11_GPM_WGBOXPERF_INTR_ENABLE, 0);
+	intel_uncore_write(uncore, GEN11_GPM_WGBOXPERF_INTR_MASK,  ~0);
+	intel_uncore_write(uncore, GEN11_GUC_SG_INTR_ENABLE, 0);
+	intel_uncore_write(uncore, GEN11_GUC_SG_INTR_MASK,  ~0);
+}
+
+void gen11_gt_irq_postinstall(struct intel_gt *gt)
+{
+	const u32 irqs = GT_RENDER_USER_INTERRUPT | GT_CONTEXT_SWITCH_INTERRUPT;
+	struct intel_uncore *uncore = gt->uncore;
+	const u32 dmask = irqs << 16 | irqs;
+	const u32 smask = irqs << 16;
+
+	BUILD_BUG_ON(irqs & 0xffff0000);
+
+	/* Enable RCS, BCS, VCS and VECS class interrupts. */
+	intel_uncore_write(uncore, GEN11_RENDER_COPY_INTR_ENABLE, dmask);
+	intel_uncore_write(uncore, GEN11_VCS_VECS_INTR_ENABLE, dmask);
+
+	/* Unmask irqs on RCS, BCS, VCS and VECS engines. */
+	intel_uncore_write(uncore, GEN11_RCS0_RSVD_INTR_MASK, ~smask);
+	intel_uncore_write(uncore, GEN11_BCS_RSVD_INTR_MASK, ~smask);
+	intel_uncore_write(uncore, GEN11_VCS0_VCS1_INTR_MASK, ~dmask);
+	intel_uncore_write(uncore, GEN11_VCS2_VCS3_INTR_MASK, ~dmask);
+	intel_uncore_write(uncore, GEN11_VECS0_VECS1_INTR_MASK, ~dmask);
+
+	/*
+	 * RPS interrupts will get enabled/disabled on demand when RPS itself
+	 * is enabled/disabled.
+	 */
+	gt->pm_ier = 0x0;
+	gt->pm_imr = ~gt->pm_ier;
+	intel_uncore_write(uncore, GEN11_GPM_WGBOXPERF_INTR_ENABLE, 0);
+	intel_uncore_write(uncore, GEN11_GPM_WGBOXPERF_INTR_MASK,  ~0);
+
+	/* Same thing for GuC interrupts */
+	intel_uncore_write(uncore, GEN11_GUC_SG_INTR_ENABLE, 0);
+	intel_uncore_write(uncore, GEN11_GUC_SG_INTR_MASK,  ~0);
+}
+
+void gen5_gt_irq_handler(struct intel_gt *gt, u32 gt_iir)
+{
+	if (gt_iir & GT_RENDER_USER_INTERRUPT)
+		intel_engine_breadcrumbs_irq(gt->engine_class[RENDER_CLASS][0]);
+	if (gt_iir & ILK_BSD_USER_INTERRUPT)
+		intel_engine_breadcrumbs_irq(gt->engine_class[VIDEO_DECODE_CLASS][0]);
+}
+
+static void gen7_parity_error_irq_handler(struct intel_gt *gt, u32 iir)
+{
+	if (!HAS_L3_DPF(gt->i915))
+		return;
+
+	spin_lock(&gt->irq_lock);
+	gen5_gt_disable_irq(gt, GT_PARITY_ERROR(gt->i915));
+	spin_unlock(&gt->irq_lock);
+
+	if (iir & GT_RENDER_L3_PARITY_ERROR_INTERRUPT_S1)
+		gt->i915->l3_parity.which_slice |= 1 << 1;
+
+	if (iir & GT_RENDER_L3_PARITY_ERROR_INTERRUPT)
+		gt->i915->l3_parity.which_slice |= 1 << 0;
+
+	schedule_work(&gt->i915->l3_parity.error_work);
+}
+
+void gen6_gt_irq_handler(struct intel_gt *gt, u32 gt_iir)
+{
+	if (gt_iir & GT_RENDER_USER_INTERRUPT)
+		intel_engine_breadcrumbs_irq(gt->engine_class[RENDER_CLASS][0]);
+	if (gt_iir & GT_BSD_USER_INTERRUPT)
+		intel_engine_breadcrumbs_irq(gt->engine_class[VIDEO_DECODE_CLASS][0]);
+	if (gt_iir & GT_BLT_USER_INTERRUPT)
+		intel_engine_breadcrumbs_irq(gt->engine_class[COPY_ENGINE_CLASS][0]);
+
+	if (gt_iir & (GT_BLT_CS_ERROR_INTERRUPT |
+		      GT_BSD_CS_ERROR_INTERRUPT |
+		      GT_RENDER_CS_MASTER_ERROR_INTERRUPT))
+		DRM_DEBUG("Command parser error, gt_iir 0x%08x\n", gt_iir);
+
+	if (gt_iir & GT_PARITY_ERROR(gt->i915))
+		gen7_parity_error_irq_handler(gt, gt_iir);
+}
+
+void gen8_gt_irq_ack(struct intel_gt *gt, u32 master_ctl, u32 gt_iir[4])
+{
+	void __iomem * const regs = gt->uncore->regs;
+
+	if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) {
+		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_VCS0_IRQ | GEN8_GT_VCS1_IRQ)) {
+		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_PM_IRQ | GEN8_GT_GUC_IRQ)) {
+		gt_iir[2] = raw_reg_read(regs, GEN8_GT_IIR(2));
+		if (likely(gt_iir[2]))
+			raw_reg_write(regs, GEN8_GT_IIR(2), gt_iir[2]);
+	}
+
+	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]);
+	}
+}
+
+void gen8_gt_irq_handler(struct intel_gt *gt, u32 master_ctl, u32 gt_iir[4])
+{
+	if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) {
+		cs_irq_handler(gt->engine_class[RENDER_CLASS][0],
+			       gt_iir[0] >> GEN8_RCS_IRQ_SHIFT);
+		cs_irq_handler(gt->engine_class[COPY_ENGINE_CLASS][0],
+			       gt_iir[0] >> GEN8_BCS_IRQ_SHIFT);
+	}
+
+	if (master_ctl & (GEN8_GT_VCS0_IRQ | GEN8_GT_VCS1_IRQ)) {
+		cs_irq_handler(gt->engine_class[VIDEO_DECODE_CLASS][0],
+			       gt_iir[1] >> GEN8_VCS0_IRQ_SHIFT);
+		cs_irq_handler(gt->engine_class[VIDEO_DECODE_CLASS][1],
+			       gt_iir[1] >> GEN8_VCS1_IRQ_SHIFT);
+	}
+
+	if (master_ctl & GEN8_GT_VECS_IRQ) {
+		cs_irq_handler(gt->engine_class[VIDEO_ENHANCEMENT_CLASS][0],
+			       gt_iir[3] >> GEN8_VECS_IRQ_SHIFT);
+	}
+
+	if (master_ctl & (GEN8_GT_PM_IRQ | GEN8_GT_GUC_IRQ)) {
+		gen6_rps_irq_handler(&gt->rps, gt_iir[2]);
+		guc_irq_handler(&gt->uc.guc, gt_iir[2] >> 16);
+	}
+}
+
+void gen8_gt_irq_reset(struct intel_gt *gt)
+{
+	struct intel_uncore *uncore = gt->uncore;
+
+	GEN8_IRQ_RESET_NDX(uncore, GT, 0);
+	GEN8_IRQ_RESET_NDX(uncore, GT, 1);
+	GEN8_IRQ_RESET_NDX(uncore, GT, 2);
+	GEN8_IRQ_RESET_NDX(uncore, GT, 3);
+}
+
+void gen8_gt_irq_postinstall(struct intel_gt *gt)
+{
+	struct intel_uncore *uncore = gt->uncore;
+
+	/* These are interrupts we'll toggle with the ring mask register */
+	u32 gt_interrupts[] = {
+		(GT_RENDER_USER_INTERRUPT << GEN8_RCS_IRQ_SHIFT |
+		 GT_CONTEXT_SWITCH_INTERRUPT << GEN8_RCS_IRQ_SHIFT |
+		 GT_RENDER_USER_INTERRUPT << GEN8_BCS_IRQ_SHIFT |
+		 GT_CONTEXT_SWITCH_INTERRUPT << GEN8_BCS_IRQ_SHIFT),
+
+		(GT_RENDER_USER_INTERRUPT << GEN8_VCS0_IRQ_SHIFT |
+		 GT_CONTEXT_SWITCH_INTERRUPT << GEN8_VCS0_IRQ_SHIFT |
+		 GT_RENDER_USER_INTERRUPT << GEN8_VCS1_IRQ_SHIFT |
+		 GT_CONTEXT_SWITCH_INTERRUPT << GEN8_VCS1_IRQ_SHIFT),
+
+		0,
+
+		(GT_RENDER_USER_INTERRUPT << GEN8_VECS_IRQ_SHIFT |
+		 GT_CONTEXT_SWITCH_INTERRUPT << GEN8_VECS_IRQ_SHIFT)
+	};
+
+	gt->pm_ier = 0x0;
+	gt->pm_imr = ~gt->pm_ier;
+	GEN8_IRQ_INIT_NDX(uncore, GT, 0, ~gt_interrupts[0], gt_interrupts[0]);
+	GEN8_IRQ_INIT_NDX(uncore, GT, 1, ~gt_interrupts[1], gt_interrupts[1]);
+	/*
+	 * RPS interrupts will get enabled/disabled on demand when RPS itself
+	 * is enabled/disabled. Same wil be the case for GuC interrupts.
+	 */
+	GEN8_IRQ_INIT_NDX(uncore, GT, 2, gt->pm_imr, gt->pm_ier);
+	GEN8_IRQ_INIT_NDX(uncore, GT, 3, ~gt_interrupts[3], gt_interrupts[3]);
+}
+
+static void gen5_gt_update_irq(struct intel_gt *gt,
+			       u32 interrupt_mask,
+			       u32 enabled_irq_mask)
+{
+	lockdep_assert_held(&gt->irq_lock);
+
+	GEM_BUG_ON(enabled_irq_mask & ~interrupt_mask);
+
+	gt->gt_imr &= ~interrupt_mask;
+	gt->gt_imr |= (~enabled_irq_mask & interrupt_mask);
+	intel_uncore_write(gt->uncore, GTIMR, gt->gt_imr);
+}
+
+void gen5_gt_enable_irq(struct intel_gt *gt, u32 mask)
+{
+	gen5_gt_update_irq(gt, mask, mask);
+	intel_uncore_posting_read_fw(gt->uncore, GTIMR);
+}
+
+void gen5_gt_disable_irq(struct intel_gt *gt, u32 mask)
+{
+	gen5_gt_update_irq(gt, mask, 0);
+}
+
+void gen5_gt_irq_reset(struct intel_gt *gt)
+{
+	struct intel_uncore *uncore = gt->uncore;
+
+	GEN3_IRQ_RESET(uncore, GT);
+	if (INTEL_GEN(gt->i915) >= 6)
+		GEN3_IRQ_RESET(uncore, GEN6_PM);
+}
+
+void gen5_gt_irq_postinstall(struct intel_gt *gt)
+{
+	struct intel_uncore *uncore = gt->uncore;
+	u32 pm_irqs = 0;
+	u32 gt_irqs = 0;
+
+	gt->gt_imr = ~0;
+	if (HAS_L3_DPF(gt->i915)) {
+		/* L3 parity interrupt is always unmasked. */
+		gt->gt_imr = ~GT_PARITY_ERROR(gt->i915);
+		gt_irqs |= GT_PARITY_ERROR(gt->i915);
+	}
+
+	gt_irqs |= GT_RENDER_USER_INTERRUPT;
+	if (IS_GEN(gt->i915, 5))
+		gt_irqs |= ILK_BSD_USER_INTERRUPT;
+	else
+		gt_irqs |= GT_BLT_USER_INTERRUPT | GT_BSD_USER_INTERRUPT;
+
+	GEN3_IRQ_INIT(uncore, GT, gt->gt_imr, gt_irqs);
+
+	if (INTEL_GEN(gt->i915) >= 6) {
+		/*
+		 * RPS interrupts will get enabled/disabled on demand when RPS
+		 * itself is enabled/disabled.
+		 */
+		if (HAS_ENGINE(gt->i915, VECS0)) {
+			pm_irqs |= PM_VEBOX_USER_INTERRUPT;
+			gt->pm_ier |= PM_VEBOX_USER_INTERRUPT;
+		}
+
+		gt->pm_imr = 0xffffffff;
+		GEN3_IRQ_INIT(uncore, GEN6_PM, gt->pm_imr, pm_irqs);
+	}
+}
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_irq.h b/drivers/gpu/drm/i915/gt/intel_gt_irq.h
new file mode 100644
index 000000000000..8f37593712c9
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/intel_gt_irq.h
@@ -0,0 +1,44 @@ 
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef INTEL_GT_IRQ_H
+#define INTEL_GT_IRQ_H
+
+#include <linux/types.h>
+
+struct intel_gt;
+
+#define GEN8_GT_IRQS (GEN8_GT_RCS_IRQ | \
+		      GEN8_GT_BCS_IRQ | \
+		      GEN8_GT_VCS0_IRQ | \
+		      GEN8_GT_VCS1_IRQ | \
+		      GEN8_GT_VECS_IRQ | \
+		      GEN8_GT_PM_IRQ | \
+		      GEN8_GT_GUC_IRQ)
+
+void gen11_gt_irq_reset(struct intel_gt *gt);
+void gen11_gt_irq_postinstall(struct intel_gt *gt);
+void gen11_gt_irq_handler(struct intel_gt *gt, const u32 master_ctl);
+
+bool gen11_gt_reset_one_iir(struct intel_gt *gt,
+			    const unsigned int bank,
+			    const unsigned int bit);
+
+void gen5_gt_irq_handler(struct intel_gt *gt, u32 gt_iir);
+
+void gen5_gt_irq_postinstall(struct intel_gt *gt);
+void gen5_gt_irq_reset(struct intel_gt *gt);
+void gen5_gt_disable_irq(struct intel_gt *gt, u32 mask);
+void gen5_gt_enable_irq(struct intel_gt *gt, u32 mask);
+
+void gen6_gt_irq_handler(struct intel_gt *gt, u32 gt_iir);
+
+void gen8_gt_irq_ack(struct intel_gt *gt, u32 master_ctl, u32 gt_iir[4]);
+void gen8_gt_irq_reset(struct intel_gt *gt);
+void gen8_gt_irq_handler(struct intel_gt *gt, u32 master_ctl, u32 gt_iir[4]);
+void gen8_gt_irq_postinstall(struct intel_gt *gt);
+
+#endif /* INTEL_GT_IRQ_H */
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_types.h b/drivers/gpu/drm/i915/gt/intel_gt_types.h
index 328ee1085591..e6dbcaa2d9d5 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt_types.h
@@ -74,6 +74,7 @@  struct intel_gt {
 	struct i915_vma *scratch;
 
 	spinlock_t irq_lock;
+	u32 gt_imr;
 	u32 pm_ier;
 	u32 pm_imr;
 
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 9094c4811f54..5825535976d4 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -173,7 +173,7 @@  static const u32 hpd_tgp[HPD_NUM_PINS] = {
 	[HPD_PORT_I] = SDE_TC6_HOTPLUG_TGP,
 };
 
-static void gen3_irq_reset(struct intel_uncore *uncore, i915_reg_t imr,
+void gen3_irq_reset(struct intel_uncore *uncore, i915_reg_t imr,
 			   i915_reg_t iir, i915_reg_t ier)
 {
 	intel_uncore_write(uncore, imr, 0xffffffff);
@@ -188,7 +188,7 @@  static void gen3_irq_reset(struct intel_uncore *uncore, i915_reg_t imr,
 	intel_uncore_posting_read(uncore, iir);
 }
 
-static void gen2_irq_reset(struct intel_uncore *uncore)
+void gen2_irq_reset(struct intel_uncore *uncore)
 {
 	intel_uncore_write16(uncore, GEN2_IMR, 0xffff);
 	intel_uncore_posting_read16(uncore, GEN2_IMR);
@@ -248,7 +248,7 @@  static void gen2_assert_iir_is_zero(struct intel_uncore *uncore)
 	intel_uncore_posting_read16(uncore, GEN2_IIR);
 }
 
-static void gen3_irq_init(struct intel_uncore *uncore,
+void gen3_irq_init(struct intel_uncore *uncore,
 			  i915_reg_t imr, u32 imr_val,
 			  i915_reg_t ier, u32 ier_val,
 			  i915_reg_t iir)
@@ -260,7 +260,7 @@  static void gen3_irq_init(struct intel_uncore *uncore,
 	intel_uncore_posting_read(uncore, imr);
 }
 
-static void gen2_irq_init(struct intel_uncore *uncore,
+void gen2_irq_init(struct intel_uncore *uncore,
 			  u32 imr_val, u32 ier_val)
 {
 	gen2_assert_iir_is_zero(uncore);
@@ -285,9 +285,6 @@  static void gen2_irq_init(struct intel_uncore *uncore,
 		      type##IER, ier_val, \
 		      type##IIR)
 
-#define GEN2_IRQ_INIT(uncore, imr_val, ier_val) \
-	gen2_irq_init((uncore), imr_val, ier_val)
-
 static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir);
 static void guc_irq_handler(struct intel_guc *guc, u16 guc_iir);
 
diff --git a/drivers/gpu/drm/i915/i915_irq.h b/drivers/gpu/drm/i915/i915_irq.h
index 8918809cd805..5723e00e6cd3 100644
--- a/drivers/gpu/drm/i915/i915_irq.h
+++ b/drivers/gpu/drm/i915/i915_irq.h
@@ -80,17 +80,6 @@  void gen5_enable_gt_irq(struct drm_i915_private *dev_priv, u32 mask);
 void gen5_disable_gt_irq(struct drm_i915_private *dev_priv, u32 mask);
 void gen6_mask_pm_irq(struct intel_gt *gt, u32 mask);
 void gen6_unmask_pm_irq(struct intel_gt *gt, u32 mask);
-void gen11_reset_rps_interrupts(struct drm_i915_private *dev_priv);
-void gen6_reset_rps_interrupts(struct drm_i915_private *dev_priv);
-void gen6_enable_rps_interrupts(struct drm_i915_private *dev_priv);
-void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv);
-void gen6_rps_reset_ei(struct drm_i915_private *dev_priv);
-
-static inline u32 gen6_sanitize_rps_pm_mask(const struct drm_i915_private *i915,
-					    u32 mask)
-{
-	return mask & ~i915->gt_pm.rps.pm_intrmsk_mbz;
-}
 
 void intel_runtime_pm_disable_interrupts(struct drm_i915_private *dev_priv);
 void intel_runtime_pm_enable_interrupts(struct drm_i915_private *dev_priv);
@@ -139,4 +128,45 @@  void i965_disable_vblank(struct drm_crtc *crtc);
 void ilk_disable_vblank(struct drm_crtc *crtc);
 void bdw_disable_vblank(struct drm_crtc *crtc);
 
+void gen2_irq_reset(struct intel_uncore *uncore);
+void gen3_irq_reset(struct intel_uncore *uncore, i915_reg_t imr,
+		    i915_reg_t iir, i915_reg_t ier);
+
+void gen2_irq_init(struct intel_uncore *uncore,
+		   u32 imr_val, u32 ier_val);
+void gen3_irq_init(struct intel_uncore *uncore,
+		   i915_reg_t imr, u32 imr_val,
+		   i915_reg_t ier, u32 ier_val,
+		   i915_reg_t iir);
+
+#define GEN8_IRQ_RESET_NDX(uncore, type, which) \
+({ \
+	unsigned int which_ = which; \
+	gen3_irq_reset((uncore), GEN8_##type##_IMR(which_), \
+		       GEN8_##type##_IIR(which_), GEN8_##type##_IER(which_)); \
+})
+
+#define GEN3_IRQ_RESET(uncore, type) \
+	gen3_irq_reset((uncore), type##IMR, type##IIR, type##IER)
+
+#define GEN2_IRQ_RESET(uncore) \
+	gen2_irq_reset(uncore)
+
+#define GEN8_IRQ_INIT_NDX(uncore, type, which, imr_val, ier_val) \
+({ \
+	unsigned int which_ = which; \
+	gen3_irq_init((uncore), \
+		      GEN8_##type##_IMR(which_), imr_val, \
+		      GEN8_##type##_IER(which_), ier_val, \
+		      GEN8_##type##_IIR(which_)); \
+})
+
+#define GEN3_IRQ_INIT(uncore, type, imr_val, ier_val) \
+	gen3_irq_init((uncore), \
+		      type##IMR, imr_val, \
+		      type##IER, ier_val, \
+		      type##IIR)
+
+#define GEN2_IRQ_INIT(uncore, imr_val, ier_val) \
+
 #endif /* __I915_IRQ_H__ */