diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/device.h b/drivers/gpu/drm/nouveau/include/nvkm/core/device.h
index 6752a4c317e2..555e3fe06341 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/core/device.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/core/device.h
@@ -63,6 +63,8 @@ struct nvkm_device {
 	struct list_head subdev;
 
 	struct {
+		struct list_head intr;
+		struct list_head prio[NVKM_INTR_PRIO_NR];
 		spinlock_t lock;
 		int irq;
 		bool alloc;
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/intr.h b/drivers/gpu/drm/nouveau/include/nvkm/core/intr.h
index b4d49ff40c6a..ec7db1312277 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/core/intr.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/core/intr.h
@@ -3,10 +3,70 @@
 #define __NVKM_INTR_H__
 #include <core/os.h>
 struct nvkm_device;
+struct nvkm_subdev;
+
+enum nvkm_intr_prio {
+	NVKM_INTR_PRIO_VBLANK = 0,
+	NVKM_INTR_PRIO_NORMAL,
+	NVKM_INTR_PRIO_NR
+};
+
+enum nvkm_intr_type {
+	NVKM_INTR_SUBDEV   = -1, /* lookup vector by requesting subdev, in mapping table. */
+	NVKM_INTR_VECTOR_0 = 0,
+};
+
+struct nvkm_intr {
+	const struct nvkm_intr_func {
+		bool (*pending)(struct nvkm_intr *);
+		void (*unarm)(struct nvkm_intr *);
+		void (*rearm)(struct nvkm_intr *);
+		void (*block)(struct nvkm_intr *, int leaf, u32 mask);
+		void (*allow)(struct nvkm_intr *, int leaf, u32 mask);
+		void (*reset)(struct nvkm_intr *, int leaf, u32 mask);
+	} *func;
+	const struct nvkm_intr_data {
+		int type; /* enum nvkm_subdev_type (+ve), enum nvkm_intr_type (-ve) */
+		int inst;
+		int leaf;
+		u32 mask; /* 0-terminated. */
+	} *data;
+
+	struct nvkm_subdev *subdev;
+	int leaves;
+	u32 *stat;
+	u32 *mask;
+
+	struct list_head head;
+};
 
 void nvkm_intr_ctor(struct nvkm_device *);
 void nvkm_intr_dtor(struct nvkm_device *);
 int nvkm_intr_install(struct nvkm_device *);
 void nvkm_intr_unarm(struct nvkm_device *);
 void nvkm_intr_rearm(struct nvkm_device *);
+
+int nvkm_intr_add(const struct nvkm_intr_func *, const struct nvkm_intr_data *,
+		  struct nvkm_subdev *, int leaves, struct nvkm_intr *);
+void nvkm_intr_block(struct nvkm_subdev *, enum nvkm_intr_type);
+void nvkm_intr_allow(struct nvkm_subdev *, enum nvkm_intr_type);
+
+struct nvkm_inth;
+typedef irqreturn_t (*nvkm_inth_func)(struct nvkm_inth *);
+
+struct nvkm_inth {
+	struct nvkm_intr *intr;
+	int leaf;
+	u32 mask;
+	nvkm_inth_func func;
+
+	atomic_t allowed;
+
+	struct list_head head;
+};
+
+int nvkm_inth_add(struct nvkm_intr *, enum nvkm_intr_type, enum nvkm_intr_prio,
+		  struct nvkm_subdev *, nvkm_inth_func, struct nvkm_inth *);
+void nvkm_inth_allow(struct nvkm_inth *);
+void nvkm_inth_block(struct nvkm_inth *);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/intr.c b/drivers/gpu/drm/nouveau/nvkm/core/intr.c
index 89f601567749..ff95e018fa78 100644
--- a/drivers/gpu/drm/nouveau/nvkm/core/intr.c
+++ b/drivers/gpu/drm/nouveau/nvkm/core/intr.c
@@ -20,19 +20,147 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  */
 #include <core/intr.h>
-
+#include <core/device.h>
+#include <core/subdev.h>
 #include <subdev/pci.h>
+#include <subdev/top.h>
+
 #include <subdev/mc.h>
 
+static int
+nvkm_intr_xlat(struct nvkm_subdev *subdev, struct nvkm_intr *intr,
+	       enum nvkm_intr_type type, int *leaf, u32 *mask)
+{
+	struct nvkm_device *device = subdev->device;
+
+	if (type < NVKM_INTR_VECTOR_0) {
+		if (type == NVKM_INTR_SUBDEV) {
+			const struct nvkm_intr_data *data = intr->data;
+			struct nvkm_top_device *tdev;
+
+			while (data && data->mask) {
+				if (data->type == NVKM_SUBDEV_TOP) {
+					list_for_each_entry(tdev, &device->top->device, head) {
+						if (tdev->intr >= 0 &&
+						    tdev->type == subdev->type &&
+						    tdev->inst == subdev->inst) {
+							if (data->mask & BIT(tdev->intr)) {
+								*leaf = data->leaf;
+								*mask = BIT(tdev->intr);
+								return 0;
+							}
+						}
+					}
+				} else
+				if (data->type == subdev->type && data->inst == subdev->inst) {
+					*leaf = data->leaf;
+					*mask = data->mask;
+					return 0;
+				}
+
+				data++;
+			}
+		} else {
+			return -ENOSYS;
+		}
+	} else {
+		if (type < intr->leaves * sizeof(*intr->stat) * 8) {
+			*leaf = type / 32;
+			*mask = BIT(type % 32);
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+
+static struct nvkm_intr *
+nvkm_intr_find(struct nvkm_subdev *subdev, enum nvkm_intr_type type, int *leaf, u32 *mask)
+{
+	struct nvkm_intr *intr;
+	int ret;
+
+	list_for_each_entry(intr, &subdev->device->intr.intr, head) {
+		ret = nvkm_intr_xlat(subdev, intr, type, leaf, mask);
+		if (ret == 0)
+			return intr;
+	}
+
+	return NULL;
+}
+
+static void
+nvkm_intr_allow_locked(struct nvkm_intr *intr, int leaf, u32 mask)
+{
+	intr->mask[leaf] |= mask;
+	if (intr->func->allow) {
+		if (intr->func->reset)
+			intr->func->reset(intr, leaf, mask);
+		intr->func->allow(intr, leaf, mask);
+	}
+}
+
+void
+nvkm_intr_allow(struct nvkm_subdev *subdev, enum nvkm_intr_type type)
+{
+	struct nvkm_device *device = subdev->device;
+	struct nvkm_intr *intr;
+	unsigned long flags;
+	int leaf;
+	u32 mask;
+
+	intr = nvkm_intr_find(subdev, type, &leaf, &mask);
+	if (intr) {
+		nvkm_debug(intr->subdev, "intr %d/%08x allowed by %s\n", leaf, mask, subdev->name);
+		spin_lock_irqsave(&device->intr.lock, flags);
+		nvkm_intr_allow_locked(intr, leaf, mask);
+		spin_unlock_irqrestore(&device->intr.lock, flags);
+	}
+}
+
+static void
+nvkm_intr_block_locked(struct nvkm_intr *intr, int leaf, u32 mask)
+{
+	intr->mask[leaf] &= ~mask;
+	if (intr->func->block)
+		intr->func->block(intr, leaf, mask);
+}
+
+void
+nvkm_intr_block(struct nvkm_subdev *subdev, enum nvkm_intr_type type)
+{
+	struct nvkm_device *device = subdev->device;
+	struct nvkm_intr *intr;
+	unsigned long flags;
+	int leaf;
+	u32 mask;
+
+	intr = nvkm_intr_find(subdev, type, &leaf, &mask);
+	if (intr) {
+		nvkm_debug(intr->subdev, "intr %d/%08x blocked by %s\n", leaf, mask, subdev->name);
+		spin_lock_irqsave(&device->intr.lock, flags);
+		nvkm_intr_block_locked(intr, leaf, mask);
+		spin_unlock_irqrestore(&device->intr.lock, flags);
+	}
+}
+
 static void
 nvkm_intr_rearm_locked(struct nvkm_device *device)
 {
+	struct nvkm_intr *intr;
+
+	list_for_each_entry(intr, &device->intr.intr, head)
+		intr->func->rearm(intr);
 	nvkm_mc_intr_rearm(device);
 }
 
 static void
 nvkm_intr_unarm_locked(struct nvkm_device *device)
 {
+	struct nvkm_intr *intr;
+
+	list_for_each_entry(intr, &device->intr.intr, head)
+		intr->func->unarm(intr);
 	nvkm_mc_intr_unarm(device);
 }
 
@@ -40,9 +168,13 @@ static irqreturn_t
 nvkm_intr(int irq, void *arg)
 {
 	struct nvkm_device *device = arg;
+	struct nvkm_intr *intr;
+	struct nvkm_inth *inth;
 	irqreturn_t ret = IRQ_NONE;
-	bool handled;
+	bool pending = false, handled;
+	int prio, leaf;
 
+	/* Disable all top-level interrupt sources, and re-arm MSI interrupts. */
 	spin_lock(&device->intr.lock);
 	if (!device->intr.armed)
 		goto done_unlock;
@@ -50,20 +182,103 @@ nvkm_intr(int irq, void *arg)
 	nvkm_intr_unarm_locked(device);
 	nvkm_pci_msi_rearm(device);
 
+	/* Fetch pending interrupt masks. */
+	list_for_each_entry(intr, &device->intr.intr, head) {
+		if (intr->func->pending(intr))
+			pending = true;
+	}
+
 	nvkm_mc_intr(device, &handled);
 	if (handled)
 		ret = IRQ_HANDLED;
 
+	if (!pending)
+		goto done;
+
+	/* Check that GPU is still on the bus by reading NV_PMC_BOOT_0. */
+	if (WARN_ON(nvkm_rd32(device, 0x000000) == 0xffffffff))
+		goto done;
+
+	/* Execute handlers. */
+	for (prio = 0; prio < ARRAY_SIZE(device->intr.prio); prio++) {
+		list_for_each_entry(inth, &device->intr.prio[prio], head) {
+			struct nvkm_intr *intr = inth->intr;
+
+			if (intr->stat[inth->leaf] & inth->mask) {
+				if (atomic_read(&inth->allowed)) {
+					if (intr->func->reset)
+						intr->func->reset(intr, inth->leaf, inth->mask);
+					if (inth->func(inth) == IRQ_HANDLED)
+						ret = IRQ_HANDLED;
+				}
+			}
+		}
+	}
+
+	/* Nothing handled?  Some debugging/protection from IRQ storms is in order... */
+	if (ret == IRQ_NONE) {
+		list_for_each_entry(intr, &device->intr.intr, head) {
+			for (leaf = 0; leaf < intr->leaves; leaf++) {
+				if (intr->stat[leaf]) {
+					nvkm_warn(intr->subdev, "intr%d: %08x\n",
+						  leaf, intr->stat[leaf]);
+					nvkm_intr_block_locked(intr, leaf, intr->stat[leaf]);
+				}
+			}
+		}
+	}
+
+done:
+	/* Re-enable all top-level interrupt sources. */
 	nvkm_intr_rearm_locked(device);
 done_unlock:
 	spin_unlock(&device->intr.lock);
 	return ret;
 }
 
+int
+nvkm_intr_add(const struct nvkm_intr_func *func, const struct nvkm_intr_data *data,
+	      struct nvkm_subdev *subdev, int leaves, struct nvkm_intr *intr)
+{
+	struct nvkm_device *device = subdev->device;
+	int i;
+
+	intr->func = func;
+	intr->data = data;
+	intr->subdev = subdev;
+	intr->leaves = leaves;
+	intr->stat = kcalloc(leaves, sizeof(*intr->stat), GFP_KERNEL);
+	intr->mask = kcalloc(leaves, sizeof(*intr->mask), GFP_KERNEL);
+	if (!intr->stat || !intr->mask) {
+		kfree(intr->stat);
+		return -ENOMEM;
+	}
+
+	if (intr->subdev->debug >= NV_DBG_DEBUG) {
+		for (i = 0; i < intr->leaves; i++)
+			intr->mask[i] = ~0;
+	}
+
+	spin_lock_irq(&device->intr.lock);
+	list_add_tail(&intr->head, &device->intr.intr);
+	spin_unlock_irq(&device->intr.lock);
+	return 0;
+}
+
 void
 nvkm_intr_rearm(struct nvkm_device *device)
 {
+	struct nvkm_intr *intr;
+	int i;
+
 	spin_lock_irq(&device->intr.lock);
+	list_for_each_entry(intr, &device->intr.intr, head) {
+		for (i = 0; intr->func->block && i < intr->leaves; i++) {
+			intr->func->block(intr, i, ~0);
+			intr->func->allow(intr, i, intr->mask[i]);
+		}
+	}
+
 	nvkm_intr_rearm_locked(device);
 	device->intr.armed = true;
 	spin_unlock_irq(&device->intr.lock);
@@ -98,6 +313,14 @@ nvkm_intr_install(struct nvkm_device *device)
 void
 nvkm_intr_dtor(struct nvkm_device *device)
 {
+	struct nvkm_intr *intr, *intt;
+
+	list_for_each_entry_safe(intr, intt, &device->intr.intr, head) {
+		list_del(&intr->head);
+		kfree(intr->mask);
+		kfree(intr->stat);
+	}
+
 	if (device->intr.alloc)
 		free_irq(device->intr.irq, device);
 }
@@ -105,5 +328,62 @@ nvkm_intr_dtor(struct nvkm_device *device)
 void
 nvkm_intr_ctor(struct nvkm_device *device)
 {
+	int i;
+
+	INIT_LIST_HEAD(&device->intr.intr);
+	for (i = 0; i < ARRAY_SIZE(device->intr.prio); i++)
+		INIT_LIST_HEAD(&device->intr.prio[i]);
+
 	spin_lock_init(&device->intr.lock);
+	device->intr.armed = false;
+}
+
+void
+nvkm_inth_block(struct nvkm_inth *inth)
+{
+	if (unlikely(!inth->intr))
+		return;
+
+	atomic_set(&inth->allowed, 0);
+}
+
+void
+nvkm_inth_allow(struct nvkm_inth *inth)
+{
+	struct nvkm_intr *intr = inth->intr;
+	unsigned long flags;
+
+	if (unlikely(!inth->intr))
+		return;
+
+	spin_lock_irqsave(&intr->subdev->device->intr.lock, flags);
+	if (!atomic_xchg(&inth->allowed, 1)) {
+		if ((intr->mask[inth->leaf] & inth->mask) != inth->mask)
+			nvkm_intr_allow_locked(intr, inth->leaf, inth->mask);
+	}
+	spin_unlock_irqrestore(&intr->subdev->device->intr.lock, flags);
+}
+
+int
+nvkm_inth_add(struct nvkm_intr *intr, enum nvkm_intr_type type, enum nvkm_intr_prio prio,
+	      struct nvkm_subdev *subdev, nvkm_inth_func func, struct nvkm_inth *inth)
+{
+	struct nvkm_device *device = subdev->device;
+	int ret;
+
+	if (WARN_ON(inth->mask))
+		return -EBUSY;
+
+	ret = nvkm_intr_xlat(subdev, intr, type, &inth->leaf, &inth->mask);
+	if (ret)
+		return ret;
+
+	nvkm_debug(intr->subdev, "intr %d/%08x requested by %s\n",
+		   inth->leaf, inth->mask, subdev->name);
+
+	inth->intr = intr;
+	inth->func = func;
+	atomic_set(&inth->allowed, 0);
+	list_add_tail(&inth->head, &device->intr.prio[prio]);
+	return 0;
 }