1 files changed, 748 insertions, 71 deletions

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
index fcaaf93681ac..7fbb5c274ccc 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -1,5 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
 /*
- * Copyright 2014 Advanced Micro Devices, Inc.
+ * Copyright 2014-2022 Advanced Micro Devices, Inc.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -26,6 +27,8 @@
 #include "kfd_device_queue_manager.h"
 #include "kfd_priv.h"
 #include "kfd_kernel_queue.h"
+#include "amdgpu_amdkfd.h"
+#include "amdgpu_reset.h"
 
 static inline struct process_queue_node *get_queue_by_qid(
 			struct process_queue_manager *pqm, unsigned int qid)
@@ -41,6 +44,20 @@ static inline struct process_queue_node *get_queue_by_qid(
 	return NULL;
 }
 
+static int assign_queue_slot_by_qid(struct process_queue_manager *pqm,
+				    unsigned int qid)
+{
+	if (qid >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS)
+		return -EINVAL;
+
+	if (__test_and_set_bit(qid, pqm->queue_slot_bitmap)) {
+		pr_err("Cannot create new queue because requested qid(%u) is in use\n", qid);
+		return -ENOSPC;
+	}
+
+	return 0;
+}
+
 static int find_available_queue_slot(struct process_queue_manager *pqm,
 					unsigned int *qid)
 {
@@ -52,8 +69,8 @@ static int find_available_queue_slot(struct process_queue_manager *pqm,
 	pr_debug("The new slot id %lu\n", found);
 
 	if (found >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) {
-		pr_info("Cannot open more queues for process with pasid %d\n",
-				pqm->process->pasid);
+		pr_info("Cannot open more queues for process with pid %d\n",
+			pqm->process->lead_thread->pid);
 		return -ENOMEM;
 	}
 
@@ -65,29 +82,101 @@ static int find_available_queue_slot(struct process_queue_manager *pqm,
 
 void kfd_process_dequeue_from_device(struct kfd_process_device *pdd)
 {
-	struct kfd_dev *dev = pdd->dev;
+	struct kfd_node *dev = pdd->dev;
 
 	if (pdd->already_dequeued)
 		return;
-
+	/* The MES context flush needs to filter out the case which the
+	 * KFD process is created without setting up the MES context and
+	 * queue for creating a compute queue.
+	 */
 	dev->dqm->ops.process_termination(dev->dqm, &pdd->qpd);
+	if (dev->kfd->shared_resources.enable_mes && !!pdd->proc_ctx_gpu_addr &&
+	    down_read_trylock(&dev->adev->reset_domain->sem)) {
+		amdgpu_mes_flush_shader_debugger(dev->adev,
+						 pdd->proc_ctx_gpu_addr);
+		up_read(&dev->adev->reset_domain->sem);
+	}
 	pdd->already_dequeued = true;
 }
 
-void kfd_process_dequeue_from_all_devices(struct kfd_process *p)
+int pqm_set_gws(struct process_queue_manager *pqm, unsigned int qid,
+			void *gws)
 {
+	struct mqd_update_info minfo = {0};
+	struct kfd_node *dev = NULL;
+	struct process_queue_node *pqn;
 	struct kfd_process_device *pdd;
+	struct kgd_mem *mem = NULL;
+	int ret;
+
+	pqn = get_queue_by_qid(pqm, qid);
+	if (!pqn) {
+		pr_err("Queue id does not match any known queue\n");
+		return -EINVAL;
+	}
+
+	if (pqn->q)
+		dev = pqn->q->device;
+	if (WARN_ON(!dev))
+		return -ENODEV;
+
+	pdd = kfd_get_process_device_data(dev, pqm->process);
+	if (!pdd) {
+		pr_err("Process device data doesn't exist\n");
+		return -EINVAL;
+	}
+
+	/* Only allow one queue per process can have GWS assigned */
+	if (gws && pdd->qpd.num_gws)
+		return -EBUSY;
+
+	if (!gws && pdd->qpd.num_gws == 0)
+		return -EINVAL;
 
-	list_for_each_entry(pdd, &p->per_device_data, per_device_list)
-		kfd_process_dequeue_from_device(pdd);
+	if ((KFD_GC_VERSION(dev) != IP_VERSION(9, 4, 3) &&
+	     KFD_GC_VERSION(dev) != IP_VERSION(9, 4, 4) &&
+	     KFD_GC_VERSION(dev) != IP_VERSION(9, 5, 0)) &&
+	    !dev->kfd->shared_resources.enable_mes) {
+		if (gws)
+			ret = amdgpu_amdkfd_add_gws_to_process(pdd->process->kgd_process_info,
+				gws, &mem);
+		else
+			ret = amdgpu_amdkfd_remove_gws_from_process(pdd->process->kgd_process_info,
+				pqn->q->gws);
+		if (unlikely(ret))
+			return ret;
+		pqn->q->gws = mem;
+	} else {
+		/*
+		 * Intentionally set GWS to a non-NULL value
+		 * for devices that do not use GWS for global wave
+		 * synchronization but require the formality
+		 * of setting GWS for cooperative groups.
+		 */
+		pqn->q->gws = gws ? ERR_PTR(-ENOMEM) : NULL;
+	}
+
+	pdd->qpd.num_gws = gws ? dev->adev->gds.gws_size : 0;
+	minfo.update_flag = gws ? UPDATE_FLAG_IS_GWS : 0;
+
+	return pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
+							pqn->q, &minfo);
+}
+
+void kfd_process_dequeue_from_all_devices(struct kfd_process *p)
+{
+	int i;
+
+	for (i = 0; i < p->n_pdds; i++)
+		kfd_process_dequeue_from_device(p->pdds[i]);
 }
 
 int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p)
 {
 	INIT_LIST_HEAD(&pqm->queues);
-	pqm->queue_slot_bitmap =
-			kzalloc(DIV_ROUND_UP(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS,
-					BITS_PER_BYTE), GFP_KERNEL);
+	pqm->queue_slot_bitmap = bitmap_zalloc(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS,
+					       GFP_KERNEL);
 	if (!pqm->queue_slot_bitmap)
 		return -ENOMEM;
 	pqm->process = p;
@@ -95,29 +184,73 @@ int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p)
 	return 0;
 }
 
+static void pqm_clean_queue_resource(struct process_queue_manager *pqm,
+				     struct process_queue_node *pqn)
+{
+	struct kfd_node *dev;
+	struct kfd_process_device *pdd;
+
+	dev = pqn->q->device;
+
+	pdd = kfd_get_process_device_data(dev, pqm->process);
+	if (!pdd) {
+		pr_err("Process device data doesn't exist\n");
+		return;
+	}
+
+	if (pqn->q->gws) {
+		if (KFD_GC_VERSION(pqn->q->device) != IP_VERSION(9, 4, 3) &&
+		    KFD_GC_VERSION(pqn->q->device) != IP_VERSION(9, 4, 4) &&
+		    KFD_GC_VERSION(pqn->q->device) != IP_VERSION(9, 5, 0) &&
+		    !dev->kfd->shared_resources.enable_mes)
+			amdgpu_amdkfd_remove_gws_from_process(
+				pqm->process->kgd_process_info, pqn->q->gws);
+		pdd->qpd.num_gws = 0;
+	}
+
+	if (dev->kfd->shared_resources.enable_mes) {
+		amdgpu_amdkfd_free_gtt_mem(dev->adev, &pqn->q->gang_ctx_bo);
+		amdgpu_amdkfd_free_gtt_mem(dev->adev, (void **)&pqn->q->wptr_bo_gart);
+	}
+}
+
 void pqm_uninit(struct process_queue_manager *pqm)
 {
 	struct process_queue_node *pqn, *next;
 
 	list_for_each_entry_safe(pqn, next, &pqm->queues, process_queue_list) {
+		if (pqn->q) {
+			struct kfd_process_device *pdd = kfd_get_process_device_data(pqn->q->device,
+										     pqm->process);
+			if (pdd) {
+				kfd_queue_unref_bo_vas(pdd, &pqn->q->properties);
+				kfd_queue_release_buffers(pdd, &pqn->q->properties);
+			} else {
+				WARN_ON(!pdd);
+			}
+			pqm_clean_queue_resource(pqm, pqn);
+		}
+
+		kfd_procfs_del_queue(pqn->q);
 		uninit_queue(pqn->q);
 		list_del(&pqn->process_queue_list);
 		kfree(pqn);
 	}
 
-	kfree(pqm->queue_slot_bitmap);
+	bitmap_free(pqm->queue_slot_bitmap);
 	pqm->queue_slot_bitmap = NULL;
 }
 
-static int create_cp_queue(struct process_queue_manager *pqm,
-				struct kfd_dev *dev, struct queue **q,
+static int init_user_queue(struct process_queue_manager *pqm,
+				struct kfd_node *dev, struct queue **q,
 				struct queue_properties *q_properties,
-				struct file *f, unsigned int qid)
+				unsigned int qid)
 {
 	int retval;
 
 	/* Doorbell initialized in user space*/
 	q_properties->doorbell_ptr = NULL;
+	q_properties->exception_status = KFD_EC_MASK(EC_QUEUE_NEW);
 
 	/* let DQM handle it*/
 	q_properties->vmid = 0;
@@ -130,16 +263,55 @@ static int create_cp_queue(struct process_queue_manager *pqm,
 	(*q)->device = dev;
 	(*q)->process = pqm->process;
 
+	if (dev->kfd->shared_resources.enable_mes) {
+		retval = amdgpu_amdkfd_alloc_gtt_mem(dev->adev,
+						AMDGPU_MES_GANG_CTX_SIZE,
+						&(*q)->gang_ctx_bo,
+						&(*q)->gang_ctx_gpu_addr,
+						&(*q)->gang_ctx_cpu_ptr,
+						false);
+		if (retval) {
+			pr_err("failed to allocate gang context bo\n");
+			goto cleanup;
+		}
+		memset((*q)->gang_ctx_cpu_ptr, 0, AMDGPU_MES_GANG_CTX_SIZE);
+
+		/* Starting with GFX11, wptr BOs must be mapped to GART for MES to determine work
+		 * on unmapped queues for usermode queue oversubscription (no aggregated doorbell)
+		 */
+		if (dev->adev != amdgpu_ttm_adev(q_properties->wptr_bo->tbo.bdev)) {
+			pr_err("Queue memory allocated to wrong device\n");
+			retval = -EINVAL;
+			goto free_gang_ctx_bo;
+		}
+
+		retval = amdgpu_amdkfd_map_gtt_bo_to_gart(q_properties->wptr_bo,
+							  &(*q)->wptr_bo_gart);
+		if (retval) {
+			pr_err("Failed to map wptr bo to GART\n");
+			goto free_gang_ctx_bo;
+		}
+	}
+
 	pr_debug("PQM After init queue");
+	return 0;
 
+free_gang_ctx_bo:
+	amdgpu_amdkfd_free_gtt_mem(dev->adev, &(*q)->gang_ctx_bo);
+cleanup:
+	uninit_queue(*q);
+	*q = NULL;
 	return retval;
 }
 
 int pqm_create_queue(struct process_queue_manager *pqm,
-			    struct kfd_dev *dev,
-			    struct file *f,
+			    struct kfd_node *dev,
 			    struct queue_properties *properties,
-			    unsigned int *qid)
+			    unsigned int *qid,
+			    const struct kfd_criu_queue_priv_data *q_data,
+			    const void *restore_mqd,
+			    const void *restore_ctl_stack,
+			    uint32_t *p_doorbell_offset_in_process)
 {
 	int retval;
 	struct kfd_process_device *pdd;
@@ -149,6 +321,15 @@ int pqm_create_queue(struct process_queue_manager *pqm,
 	enum kfd_queue_type type = properties->type;
 	unsigned int max_queues = 127; /* HWS limit */
 
+	/*
+	 * On GFX 9.4.3/9.5.0, increase the number of queues that
+	 * can be created to 255. No HWS limit on GFX 9.4.3/9.5.0.
+	 */
+	if (KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 3) ||
+	    KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 4) ||
+	    KFD_GC_VERSION(dev) == IP_VERSION(9, 5, 0))
+		max_queues = 255;
+
 	q = NULL;
 	kq = NULL;
 
@@ -165,19 +346,40 @@ int pqm_create_queue(struct process_queue_manager *pqm,
 	 * Hence we also check the type as well
 	 */
 	if ((pdd->qpd.is_debug) || (type == KFD_QUEUE_TYPE_DIQ))
-		max_queues = dev->device_info->max_no_of_hqd/2;
+		max_queues = dev->kfd->device_info.max_no_of_hqd/2;
 
 	if (pdd->qpd.queue_count >= max_queues)
 		return -ENOSPC;
 
-	retval = find_available_queue_slot(pqm, qid);
+	if (q_data) {
+		retval = assign_queue_slot_by_qid(pqm, q_data->q_id);
+		*qid = q_data->q_id;
+	} else
+		retval = find_available_queue_slot(pqm, qid);
+
 	if (retval != 0)
 		return retval;
 
+	/* Register process if this is the first queue */
 	if (list_empty(&pdd->qpd.queues_list) &&
 	    list_empty(&pdd->qpd.priv_queue_list))
 		dev->dqm->ops.register_process(dev->dqm, &pdd->qpd);
 
+	/* Allocate proc_ctx_bo only if MES is enabled and this is the first queue */
+	if (!pdd->proc_ctx_cpu_ptr && dev->kfd->shared_resources.enable_mes) {
+		retval = amdgpu_amdkfd_alloc_gtt_mem(dev->adev,
+						     AMDGPU_MES_PROC_CTX_SIZE,
+						     &pdd->proc_ctx_bo,
+						     &pdd->proc_ctx_gpu_addr,
+						     &pdd->proc_ctx_cpu_ptr,
+						     false);
+		if (retval) {
+			dev_err(dev->adev->dev, "failed to allocate process context bo\n");
+			return retval;
+		}
+		memset(pdd->proc_ctx_cpu_ptr, 0, AMDGPU_MES_PROC_CTX_SIZE);
+	}
+
 	pqn = kzalloc(sizeof(*pqn), GFP_KERNEL);
 	if (!pqn) {
 		retval = -ENOMEM;
@@ -186,19 +388,21 @@ int pqm_create_queue(struct process_queue_manager *pqm,
 
 	switch (type) {
 	case KFD_QUEUE_TYPE_SDMA:
-		if (dev->dqm->queue_count >= get_num_sdma_queues(dev->dqm)) {
-			pr_err("Over-subscription is not allowed for SDMA.\n");
-			retval = -EPERM;
-			goto err_create_queue;
-		}
-
-		retval = create_cp_queue(pqm, dev, &q, properties, f, *qid);
+	case KFD_QUEUE_TYPE_SDMA_XGMI:
+	case KFD_QUEUE_TYPE_SDMA_BY_ENG_ID:
+		/* SDMA queues are always allocated statically no matter
+		 * which scheduler mode is used. We also do not need to
+		 * check whether a SDMA queue can be allocated here, because
+		 * allocate_sdma_queue() in create_queue() has the
+		 * corresponding check logic.
+		 */
+		retval = init_user_queue(pqm, dev, &q, properties, *qid);
 		if (retval != 0)
 			goto err_create_queue;
 		pqn->q = q;
 		pqn->kq = NULL;
-		retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd);
-		pr_debug("DQM returned %d for create_queue\n", retval);
+		retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data,
+						    restore_mqd, restore_ctl_stack);
 		print_queue(q);
 		break;
 
@@ -207,19 +411,19 @@ int pqm_create_queue(struct process_queue_manager *pqm,
 		if ((dev->dqm->sched_policy ==
 		     KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION) &&
 		((dev->dqm->processes_count >= dev->vm_info.vmid_num_kfd) ||
-		(dev->dqm->queue_count >= get_queues_num(dev->dqm)))) {
+		(dev->dqm->active_queue_count >= get_cp_queues_num(dev->dqm)))) {
 			pr_debug("Over-subscription is not allowed when amdkfd.sched_policy == 1\n");
 			retval = -EPERM;
 			goto err_create_queue;
 		}
 
-		retval = create_cp_queue(pqm, dev, &q, properties, f, *qid);
+		retval = init_user_queue(pqm, dev, &q, properties, *qid);
 		if (retval != 0)
 			goto err_create_queue;
 		pqn->q = q;
 		pqn->kq = NULL;
-		retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd);
-		pr_debug("DQM returned %d for create_queue\n", retval);
+		retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data,
+						    restore_mqd, restore_ctl_stack);
 		print_queue(q);
 		break;
 	case KFD_QUEUE_TYPE_DIQ:
@@ -231,6 +435,10 @@ int pqm_create_queue(struct process_queue_manager *pqm,
 		kq->queue->properties.queue_id = *qid;
 		pqn->kq = kq;
 		pqn->q = NULL;
+		retval = kfd_process_drain_interrupts(pdd);
+		if (retval)
+			break;
+
 		retval = dev->dqm->ops.create_kernel_queue(dev->dqm,
 							kq, &pdd->qpd);
 		break;
@@ -240,19 +448,33 @@ int pqm_create_queue(struct process_queue_manager *pqm,
 	}
 
 	if (retval != 0) {
-		pr_err("Pasid %d DQM create queue %d failed. ret %d\n",
-			pqm->process->pasid, type, retval);
+		if ((type == KFD_QUEUE_TYPE_SDMA ||
+		    type == KFD_QUEUE_TYPE_SDMA_XGMI ||
+		    type == KFD_QUEUE_TYPE_SDMA_BY_ENG_ID) &&
+		    retval == -ENOMEM)
+			pr_warn("process pid %d DQM create queue type %d failed. ret %d\n",
+				pqm->process->lead_thread->pid, type, retval);
+		else
+			pr_err("process pid %d DQM create queue type %d failed. ret %d\n",
+				pqm->process->lead_thread->pid, type, retval);
 		goto err_create_queue;
 	}
 
-	if (q)
+	if (q && p_doorbell_offset_in_process) {
 		/* Return the doorbell offset within the doorbell page
 		 * to the caller so it can be passed up to user mode
 		 * (in bytes).
+		 * relative doorbell index = Absolute doorbell index -
+		 * absolute index of first doorbell in the page.
 		 */
-		properties->doorbell_off =
-			(q->properties.doorbell_off * sizeof(uint32_t)) &
-			(kfd_doorbell_process_slice(dev) - 1);
+		uint32_t first_db_index = amdgpu_doorbell_index_on_bar(pdd->dev->adev,
+								       pdd->qpd.proc_doorbells,
+								       0,
+								       pdd->dev->kfd->device_info.doorbell_size);
+
+		*p_doorbell_offset_in_process = (q->properties.doorbell_off
+						- first_db_index) * sizeof(uint32_t);
+	}
 
 	pr_debug("PQM After DQM create queue\n");
 
@@ -260,12 +482,16 @@ int pqm_create_queue(struct process_queue_manager *pqm,
 
 	if (q) {
 		pr_debug("PQM done creating queue\n");
+		kfd_procfs_add_queue(q);
 		print_queue_properties(&q->properties);
 	}
 
 	return retval;
 
 err_create_queue:
+	uninit_queue(q);
+	if (kq)
+		kernel_queue_uninit(kq);
 	kfree(pqn);
 err_allocate_pqn:
 	/* check if queues list is empty unregister process from device */
@@ -281,7 +507,7 @@ int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid)
 	struct process_queue_node *pqn;
 	struct kfd_process_device *pdd;
 	struct device_queue_manager *dqm;
-	struct kfd_dev *dev;
+	struct kfd_node *dev;
 	int retval;
 
 	dqm = NULL;
@@ -316,17 +542,22 @@ int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid)
 	}
 
 	if (pqn->q) {
+		retval = kfd_queue_unref_bo_vas(pdd, &pqn->q->properties);
+		if (retval)
+			goto err_destroy_queue;
+
 		dqm = pqn->q->device->dqm;
 		retval = dqm->ops.destroy_queue(dqm, &pdd->qpd, pqn->q);
 		if (retval) {
-			pr_err("Pasid %d destroy queue %d failed, ret %d\n",
-				pqm->process->pasid,
+			pr_err("Pasid 0x%x destroy queue %d failed, ret %d\n",
+				pdd->pasid,
 				pqn->q->properties.queue_id, retval);
-			if (retval != -ETIME)
+			if (retval != -ETIME && retval != -EIO)
 				goto err_destroy_queue;
 		}
-		kfree(pqn->q->properties.cu_mask);
-		pqn->q->properties.cu_mask = NULL;
+		kfd_procfs_del_queue(pqn->q);
+		kfd_queue_release_buffers(pdd, &pqn->q->properties);
+		pqm_clean_queue_resource(pqm, pqn);
 		uninit_queue(pqn->q);
 	}
 
@@ -342,33 +573,65 @@ err_destroy_queue:
 	return retval;
 }
 
-int pqm_update_queue(struct process_queue_manager *pqm, unsigned int qid,
-			struct queue_properties *p)
+int pqm_update_queue_properties(struct process_queue_manager *pqm,
+				unsigned int qid, struct queue_properties *p)
 {
 	int retval;
 	struct process_queue_node *pqn;
 
 	pqn = get_queue_by_qid(pqm, qid);
-	if (!pqn) {
+	if (!pqn || !pqn->q) {
 		pr_debug("No queue %d exists for update operation\n", qid);
 		return -EFAULT;
 	}
 
+	/*
+	 * Update with NULL ring address is used to disable the queue
+	 */
+	if (p->queue_address && p->queue_size) {
+		struct kfd_process_device *pdd;
+		struct amdgpu_vm *vm;
+		struct queue *q = pqn->q;
+		int err;
+
+		pdd = kfd_get_process_device_data(q->device, q->process);
+		if (!pdd)
+			return -ENODEV;
+		vm = drm_priv_to_vm(pdd->drm_priv);
+		err = amdgpu_bo_reserve(vm->root.bo, false);
+		if (err)
+			return err;
+
+		if (kfd_queue_buffer_get(vm, (void *)p->queue_address, &p->ring_bo,
+					 p->queue_size)) {
+			pr_debug("ring buf 0x%llx size 0x%llx not mapped on GPU\n",
+				 p->queue_address, p->queue_size);
+			return -EFAULT;
+		}
+
+		kfd_queue_unref_bo_va(vm, &pqn->q->properties.ring_bo);
+		kfd_queue_buffer_put(&pqn->q->properties.ring_bo);
+		amdgpu_bo_unreserve(vm->root.bo);
+
+		pqn->q->properties.ring_bo = p->ring_bo;
+	}
+
 	pqn->q->properties.queue_address = p->queue_address;
 	pqn->q->properties.queue_size = p->queue_size;
 	pqn->q->properties.queue_percent = p->queue_percent;
 	pqn->q->properties.priority = p->priority;
+	pqn->q->properties.pm4_target_xcc = p->pm4_target_xcc;
 
 	retval = pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
-							pqn->q);
+							pqn->q, NULL);
 	if (retval != 0)
 		return retval;
 
 	return 0;
 }
 
-int pqm_set_cu_mask(struct process_queue_manager *pqm, unsigned int qid,
-			struct queue_properties *p)
+int pqm_update_mqd(struct process_queue_manager *pqm,
+				unsigned int qid, struct mqd_update_info *minfo)
 {
 	int retval;
 	struct process_queue_node *pqn;
@@ -379,33 +642,43 @@ int pqm_set_cu_mask(struct process_queue_manager *pqm, unsigned int qid,
 		return -EFAULT;
 	}
 
-	/* Free the old CU mask memory if it is already allocated, then
-	 * allocate memory for the new CU mask.
-	 */
-	kfree(pqn->q->properties.cu_mask);
+	/* CUs are masked for debugger requirements so deny user mask  */
+	if (pqn->q->properties.is_dbg_wa && minfo && minfo->cu_mask.ptr)
+		return -EBUSY;
 
-	pqn->q->properties.cu_mask_count = p->cu_mask_count;
-	pqn->q->properties.cu_mask = p->cu_mask;
+	/* ASICs that have WGPs must enforce pairwise enabled mask checks. */
+	if (minfo && minfo->cu_mask.ptr &&
+			KFD_GC_VERSION(pqn->q->device) >= IP_VERSION(10, 0, 0)) {
+		int i;
+
+		for (i = 0; i < minfo->cu_mask.count; i += 2) {
+			uint32_t cu_pair = (minfo->cu_mask.ptr[i / 32] >> (i % 32)) & 0x3;
+
+			if (cu_pair && cu_pair != 0x3) {
+				pr_debug("CUs must be adjacent pairwise enabled.\n");
+				return -EINVAL;
+			}
+		}
+	}
 
 	retval = pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
-							pqn->q);
+							pqn->q, minfo);
 	if (retval != 0)
 		return retval;
 
+	if (minfo && minfo->cu_mask.ptr)
+		pqn->q->properties.is_user_cu_masked = true;
+
 	return 0;
 }
 
-struct kernel_queue *pqm_get_kernel_queue(
-					struct process_queue_manager *pqm,
+struct queue *pqm_get_user_queue(struct process_queue_manager *pqm,
 					unsigned int qid)
 {
 	struct process_queue_node *pqn;
 
 	pqn = get_queue_by_qid(pqm, qid);
-	if (pqn && pqn->kq)
-		return pqn->kq;
-
-	return NULL;
+	return pqn ? pqn->q : NULL;
 }
 
 int pqm_get_wave_state(struct process_queue_manager *pqm,
@@ -430,6 +703,403 @@ int pqm_get_wave_state(struct process_queue_manager *pqm,
 						       save_area_used_size);
 }
 
+int pqm_get_queue_snapshot(struct process_queue_manager *pqm,
+			   uint64_t exception_clear_mask,
+			   void __user *buf,
+			   int *num_qss_entries,
+			   uint32_t *entry_size)
+{
+	struct process_queue_node *pqn;
+	struct kfd_queue_snapshot_entry src;
+	uint32_t tmp_entry_size = *entry_size, tmp_qss_entries = *num_qss_entries;
+	int r = 0;
+
+	*num_qss_entries = 0;
+	if (!(*entry_size))
+		return -EINVAL;
+
+	*entry_size = min_t(size_t, *entry_size, sizeof(struct kfd_queue_snapshot_entry));
+	mutex_lock(&pqm->process->event_mutex);
+
+	memset(&src, 0, sizeof(src));
+
+	list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
+		if (!pqn->q)
+			continue;
+
+		if (*num_qss_entries < tmp_qss_entries) {
+			set_queue_snapshot_entry(pqn->q, exception_clear_mask, &src);
+
+			if (copy_to_user(buf, &src, *entry_size)) {
+				r = -EFAULT;
+				break;
+			}
+			buf += tmp_entry_size;
+		}
+		*num_qss_entries += 1;
+	}
+
+	mutex_unlock(&pqm->process->event_mutex);
+	return r;
+}
+
+static int get_queue_data_sizes(struct kfd_process_device *pdd,
+				struct queue *q,
+				uint32_t *mqd_size,
+				uint32_t *ctl_stack_size)
+{
+	int ret;
+
+	ret = pqm_get_queue_checkpoint_info(&pdd->process->pqm,
+					    q->properties.queue_id,
+					    mqd_size,
+					    ctl_stack_size);
+	if (ret)
+		pr_err("Failed to get queue dump info (%d)\n", ret);
+
+	return ret;
+}
+
+int kfd_process_get_queue_info(struct kfd_process *p,
+			       uint32_t *num_queues,
+			       uint64_t *priv_data_sizes)
+{
+	uint32_t extra_data_sizes = 0;
+	struct queue *q;
+	int i;
+	int ret;
+
+	*num_queues = 0;
+
+	/* Run over all PDDs of the process */
+	for (i = 0; i < p->n_pdds; i++) {
+		struct kfd_process_device *pdd = p->pdds[i];
+
+		list_for_each_entry(q, &pdd->qpd.queues_list, list) {
+			if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
+				q->properties.type == KFD_QUEUE_TYPE_SDMA ||
+				q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
+				uint32_t mqd_size, ctl_stack_size;
+
+				*num_queues = *num_queues + 1;
+
+				ret = get_queue_data_sizes(pdd, q, &mqd_size, &ctl_stack_size);
+				if (ret)
+					return ret;
+
+				extra_data_sizes += mqd_size + ctl_stack_size;
+			} else {
+				pr_err("Unsupported queue type (%d)\n", q->properties.type);
+				return -EOPNOTSUPP;
+			}
+		}
+	}
+	*priv_data_sizes = extra_data_sizes +
+				(*num_queues * sizeof(struct kfd_criu_queue_priv_data));
+
+	return 0;
+}
+
+static int pqm_checkpoint_mqd(struct process_queue_manager *pqm,
+			      unsigned int qid,
+			      void *mqd,
+			      void *ctl_stack)
+{
+	struct process_queue_node *pqn;
+
+	pqn = get_queue_by_qid(pqm, qid);
+	if (!pqn) {
+		pr_debug("amdkfd: No queue %d exists for operation\n", qid);
+		return -EFAULT;
+	}
+
+	if (!pqn->q->device->dqm->ops.checkpoint_mqd) {
+		pr_err("amdkfd: queue dumping not supported on this device\n");
+		return -EOPNOTSUPP;
+	}
+
+	return pqn->q->device->dqm->ops.checkpoint_mqd(pqn->q->device->dqm,
+						       pqn->q, mqd, ctl_stack);
+}
+
+static int criu_checkpoint_queue(struct kfd_process_device *pdd,
+			   struct queue *q,
+			   struct kfd_criu_queue_priv_data *q_data)
+{
+	uint8_t *mqd, *ctl_stack;
+	int ret;
+
+	mqd = (void *)(q_data + 1);
+	ctl_stack = mqd + q_data->mqd_size;
+
+	q_data->gpu_id = pdd->user_gpu_id;
+	q_data->type = q->properties.type;
+	q_data->format = q->properties.format;
+	q_data->q_id =  q->properties.queue_id;
+	q_data->q_address = q->properties.queue_address;
+	q_data->q_size = q->properties.queue_size;
+	q_data->priority = q->properties.priority;
+	q_data->q_percent = q->properties.queue_percent;
+	q_data->read_ptr_addr = (uint64_t)q->properties.read_ptr;
+	q_data->write_ptr_addr = (uint64_t)q->properties.write_ptr;
+	q_data->doorbell_id = q->doorbell_id;
+
+	q_data->sdma_id = q->sdma_id;
+
+	q_data->eop_ring_buffer_address =
+		q->properties.eop_ring_buffer_address;
+
+	q_data->eop_ring_buffer_size = q->properties.eop_ring_buffer_size;
+
+	q_data->ctx_save_restore_area_address =
+		q->properties.ctx_save_restore_area_address;
+
+	q_data->ctx_save_restore_area_size =
+		q->properties.ctx_save_restore_area_size;
+
+	q_data->gws = !!q->gws;
+
+	ret = pqm_checkpoint_mqd(&pdd->process->pqm, q->properties.queue_id, mqd, ctl_stack);
+	if (ret) {
+		pr_err("Failed checkpoint queue_mqd (%d)\n", ret);
+		return ret;
+	}
+
+	pr_debug("Dumping Queue: gpu_id:%x queue_id:%u\n", q_data->gpu_id, q_data->q_id);
+	return ret;
+}
+
+static int criu_checkpoint_queues_device(struct kfd_process_device *pdd,
+				   uint8_t __user *user_priv,
+				   unsigned int *q_index,
+				   uint64_t *queues_priv_data_offset)
+{
+	unsigned int q_private_data_size = 0;
+	uint8_t *q_private_data = NULL; /* Local buffer to store individual queue private data */
+	struct queue *q;
+	int ret = 0;
+
+	list_for_each_entry(q, &pdd->qpd.queues_list, list) {
+		struct kfd_criu_queue_priv_data *q_data;
+		uint64_t q_data_size;
+		uint32_t mqd_size;
+		uint32_t ctl_stack_size;
+
+		if (q->properties.type != KFD_QUEUE_TYPE_COMPUTE &&
+			q->properties.type != KFD_QUEUE_TYPE_SDMA &&
+			q->properties.type != KFD_QUEUE_TYPE_SDMA_XGMI) {
+
+			pr_err("Unsupported queue type (%d)\n", q->properties.type);
+			ret = -EOPNOTSUPP;
+			break;
+		}
+
+		ret = get_queue_data_sizes(pdd, q, &mqd_size, &ctl_stack_size);
+		if (ret)
+			break;
+
+		q_data_size = sizeof(*q_data) + mqd_size + ctl_stack_size;
+
+		/* Increase local buffer space if needed */
+		if (q_private_data_size < q_data_size) {
+			kfree(q_private_data);
+
+			q_private_data = kzalloc(q_data_size, GFP_KERNEL);
+			if (!q_private_data) {
+				ret = -ENOMEM;
+				break;
+			}
+			q_private_data_size = q_data_size;
+		}
+
+		q_data = (struct kfd_criu_queue_priv_data *)q_private_data;
+
+		/*
+		 * data stored in this order:
+		 * priv_data, mqd[xcc0], mqd[xcc1],..., ctl_stack[xcc0], ctl_stack[xcc1]...
+		 */
+		q_data->mqd_size = mqd_size;
+		q_data->ctl_stack_size = ctl_stack_size;
+
+		ret = criu_checkpoint_queue(pdd, q, q_data);
+		if (ret)
+			break;
+
+		q_data->object_type = KFD_CRIU_OBJECT_TYPE_QUEUE;
+
+		ret = copy_to_user(user_priv + *queues_priv_data_offset,
+				q_data, q_data_size);
+		if (ret) {
+			ret = -EFAULT;
+			break;
+		}
+		*queues_priv_data_offset += q_data_size;
+		*q_index = *q_index + 1;
+	}
+
+	kfree(q_private_data);
+
+	return ret;
+}
+
+int kfd_criu_checkpoint_queues(struct kfd_process *p,
+			 uint8_t __user *user_priv_data,
+			 uint64_t *priv_data_offset)
+{
+	int ret = 0, pdd_index, q_index = 0;
+
+	for (pdd_index = 0; pdd_index < p->n_pdds; pdd_index++) {
+		struct kfd_process_device *pdd = p->pdds[pdd_index];
+
+		/*
+		 * criu_checkpoint_queues_device will copy data to user and update q_index and
+		 * queues_priv_data_offset
+		 */
+		ret = criu_checkpoint_queues_device(pdd, user_priv_data, &q_index,
+					      priv_data_offset);
+
+		if (ret)
+			break;
+	}
+
+	return ret;
+}
+
+static void set_queue_properties_from_criu(struct queue_properties *qp,
+					  struct kfd_criu_queue_priv_data *q_data, uint32_t num_xcc)
+{
+	qp->is_interop = false;
+	qp->queue_percent = q_data->q_percent;
+	qp->priority = q_data->priority;
+	qp->queue_address = q_data->q_address;
+	qp->queue_size = q_data->q_size;
+	qp->read_ptr = (uint32_t *) q_data->read_ptr_addr;
+	qp->write_ptr = (uint32_t *) q_data->write_ptr_addr;
+	qp->eop_ring_buffer_address = q_data->eop_ring_buffer_address;
+	qp->eop_ring_buffer_size = q_data->eop_ring_buffer_size;
+	qp->ctx_save_restore_area_address = q_data->ctx_save_restore_area_address;
+	qp->ctx_save_restore_area_size = q_data->ctx_save_restore_area_size;
+	if (q_data->type == KFD_QUEUE_TYPE_COMPUTE)
+		qp->ctl_stack_size = q_data->ctl_stack_size / num_xcc;
+	else
+		qp->ctl_stack_size = q_data->ctl_stack_size;
+
+	qp->type = q_data->type;
+	qp->format = q_data->format;
+}
+
+int kfd_criu_restore_queue(struct kfd_process *p,
+			   uint8_t __user *user_priv_ptr,
+			   uint64_t *priv_data_offset,
+			   uint64_t max_priv_data_size)
+{
+	uint8_t *mqd, *ctl_stack, *q_extra_data = NULL;
+	struct kfd_criu_queue_priv_data *q_data;
+	struct kfd_process_device *pdd;
+	uint64_t q_extra_data_size;
+	struct queue_properties qp;
+	unsigned int queue_id;
+	int ret = 0;
+
+	if (*priv_data_offset + sizeof(*q_data) > max_priv_data_size)
+		return -EINVAL;
+
+	q_data = kmalloc(sizeof(*q_data), GFP_KERNEL);
+	if (!q_data)
+		return -ENOMEM;
+
+	ret = copy_from_user(q_data, user_priv_ptr + *priv_data_offset, sizeof(*q_data));
+	if (ret) {
+		ret = -EFAULT;
+		goto exit;
+	}
+
+	*priv_data_offset += sizeof(*q_data);
+	q_extra_data_size = (uint64_t)q_data->ctl_stack_size + q_data->mqd_size;
+
+	if (*priv_data_offset + q_extra_data_size > max_priv_data_size) {
+		ret = -EINVAL;
+		goto exit;
+	}
+
+	q_extra_data = kmalloc(q_extra_data_size, GFP_KERNEL);
+	if (!q_extra_data) {
+		ret = -ENOMEM;
+		goto exit;
+	}
+
+	ret = copy_from_user(q_extra_data, user_priv_ptr + *priv_data_offset, q_extra_data_size);
+	if (ret) {
+		ret = -EFAULT;
+		goto exit;
+	}
+
+	*priv_data_offset += q_extra_data_size;
+
+	pdd = kfd_process_device_data_by_id(p, q_data->gpu_id);
+	if (!pdd) {
+		pr_err("Failed to get pdd\n");
+		ret = -EINVAL;
+		goto exit;
+	}
+
+	/*
+	 * data stored in this order:
+	 * mqd[xcc0], mqd[xcc1],..., ctl_stack[xcc0], ctl_stack[xcc1]...
+	 */
+	mqd = q_extra_data;
+	ctl_stack = mqd + q_data->mqd_size;
+
+	memset(&qp, 0, sizeof(qp));
+	set_queue_properties_from_criu(&qp, q_data, NUM_XCC(pdd->dev->adev->gfx.xcc_mask));
+
+	print_queue_properties(&qp);
+
+	ret = pqm_create_queue(&p->pqm, pdd->dev, &qp, &queue_id, q_data, mqd, ctl_stack, NULL);
+	if (ret) {
+		pr_err("Failed to create new queue err:%d\n", ret);
+		goto exit;
+	}
+
+	if (q_data->gws)
+		ret = pqm_set_gws(&p->pqm, q_data->q_id, pdd->dev->gws);
+
+exit:
+	if (ret)
+		pr_err("Failed to restore queue (%d)\n", ret);
+	else
+		pr_debug("Queue id %d was restored successfully\n", queue_id);
+
+	kfree(q_data);
+	kfree(q_extra_data);
+
+	return ret;
+}
+
+int pqm_get_queue_checkpoint_info(struct process_queue_manager *pqm,
+				  unsigned int qid,
+				  uint32_t *mqd_size,
+				  uint32_t *ctl_stack_size)
+{
+	struct process_queue_node *pqn;
+
+	pqn = get_queue_by_qid(pqm, qid);
+	if (!pqn) {
+		pr_debug("amdkfd: No queue %d exists for operation\n", qid);
+		return -EFAULT;
+	}
+
+	if (!pqn->q->device->dqm->ops.get_queue_checkpoint_info) {
+		pr_err("amdkfd: queue dumping not supported on this device\n");
+		return -EOPNOTSUPP;
+	}
+
+	pqn->q->device->dqm->ops.get_queue_checkpoint_info(pqn->q->device->dqm,
+						       pqn->q, mqd_size,
+						       ctl_stack_size);
+	return 0;
+}
+
 #if defined(CONFIG_DEBUG_FS)
 
 int pqm_debugfs_mqds(struct seq_file *m, void *data)
@@ -439,13 +1109,16 @@ int pqm_debugfs_mqds(struct seq_file *m, void *data)
 	struct queue *q;
 	enum KFD_MQD_TYPE mqd_type;
 	struct mqd_manager *mqd_mgr;
-	int r = 0;
+	int r = 0, xcc, num_xccs = 1;
+	void *mqd;
+	uint64_t size = 0;
 
 	list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
 		if (pqn->q) {
 			q = pqn->q;
 			switch (q->properties.type) {
 			case KFD_QUEUE_TYPE_SDMA:
+			case KFD_QUEUE_TYPE_SDMA_XGMI:
 				seq_printf(m, "  SDMA queue on device %x\n",
 					   q->device->id);
 				mqd_type = KFD_MQD_TYPE_SDMA;
@@ -454,6 +1127,7 @@ int pqm_debugfs_mqds(struct seq_file *m, void *data)
 				seq_printf(m, "  Compute queue on device %x\n",
 					   q->device->id);
 				mqd_type = KFD_MQD_TYPE_CP;
+				num_xccs = NUM_XCC(q->device->xcc_mask);
 				break;
 			default:
 				seq_printf(m,
@@ -461,8 +1135,9 @@ int pqm_debugfs_mqds(struct seq_file *m, void *data)
 					   q->properties.type, q->device->id);
 				continue;
 			}
-			mqd_mgr = q->device->dqm->ops.get_mqd_manager(
-				q->device->dqm, mqd_type);
+			mqd_mgr = q->device->dqm->mqd_mgrs[mqd_type];
+			size = mqd_mgr->mqd_stride(mqd_mgr,
+							&q->properties);
 		} else if (pqn->kq) {
 			q = pqn->kq->queue;
 			mqd_mgr = pqn->kq->mqd_mgr;
@@ -470,7 +1145,6 @@ int pqm_debugfs_mqds(struct seq_file *m, void *data)
 			case KFD_QUEUE_TYPE_DIQ:
 				seq_printf(m, "  DIQ on device %x\n",
 					   pqn->kq->dev->id);
-				mqd_type = KFD_MQD_TYPE_HIQ;
 				break;
 			default:
 				seq_printf(m,
@@ -485,9 +1159,12 @@ int pqm_debugfs_mqds(struct seq_file *m, void *data)
 			continue;
 		}
 
-		r = mqd_mgr->debugfs_show_mqd(m, q->mqd);
-		if (r != 0)
-			break;
+		for (xcc = 0; xcc < num_xccs; xcc++) {
+			mqd = q->mqd + size * xcc;
+			r = mqd_mgr->debugfs_show_mqd(m, mqd);
+			if (r != 0)
+				break;
+		}
 	}
 
 	return r;