drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0 OR MIT
 /*
  * 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"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  *
  */

 #include <linux/slab.h>
 #include <linux/mutex.h>
 #include "kfd_device_queue_manager.h"
 #include "kfd_kernel_queue.h"
 #include "kfd_priv.h"

 static inline void inc_wptr(unsigned int *wptr, unsigned int increment_bytes,
 				unsigned int buffer_size_bytes)
 {
 	unsigned int temp = *wptr + increment_bytes / sizeof(uint32_t);

 	WARN((temp * sizeof(uint32_t)) > buffer_size_bytes,
 	     "Runlist IB overflow");
 	*wptr = temp;
 }

 static void pm_calc_rlib_size(struct packet_manager *pm,
 				unsigned int *rlib_size,
 				bool *over_subscription)
 {
 	unsigned int process_count, queue_count, compute_queue_count, gws_queue_count;
 	unsigned int map_queue_size;
 	unsigned int max_proc_per_quantum = 1;
 	struct kfd_node *dev = pm->dqm->dev;

 	process_count = pm->dqm->processes_count;
 	queue_count = pm->dqm->active_queue_count;
 	compute_queue_count = pm->dqm->active_cp_queue_count;
 	gws_queue_count = pm->dqm->gws_queue_count;

 	/* check if there is over subscription
 	 * Note: the arbitration between the number of VMIDs and
 	 * hws_max_conc_proc has been done in
 	 * kgd2kfd_device_init().
 	 */
 	*over_subscription = false;

 	if (dev->max_proc_per_quantum > 1)
 		max_proc_per_quantum = dev->max_proc_per_quantum;

 	if ((process_count > max_proc_per_quantum) ||
 	    compute_queue_count > get_cp_queues_num(pm->dqm) ||
 	    gws_queue_count > 1) {
 		*over_subscription = true;
 		pr_debug("Over subscribed runlist\n");
 	}

 	map_queue_size = pm->pmf->map_queues_size;
 	/* calculate run list ib allocation size */
 	*rlib_size = process_count * pm->pmf->map_process_size +
 		     queue_count * map_queue_size;

 	/*
 	 * Increase the allocation size in case we need a chained run list
 	 * when over subscription
 	 */
 	if (*over_subscription)
 		*rlib_size += pm->pmf->runlist_size;

 	pr_debug("runlist ib size %d\n", *rlib_size);
 }

 static int pm_allocate_runlist_ib(struct packet_manager *pm,
 				unsigned int **rl_buffer,
 				uint64_t *rl_gpu_buffer,
 				unsigned int *rl_buffer_size,
 				bool *is_over_subscription)
 {
 	int retval;

 	if (WARN_ON(pm->allocated))
 		return -EINVAL;

 	pm_calc_rlib_size(pm, rl_buffer_size, is_over_subscription);

 	mutex_lock(&pm->lock);

 	retval = kfd_gtt_sa_allocate(pm->dqm->dev, *rl_buffer_size,
 					&pm->ib_buffer_obj);

 	if (retval) {
 		pr_err("Failed to allocate runlist IB\n");
 		goto out;
 	}

 	*(void **)rl_buffer = pm->ib_buffer_obj->cpu_ptr;
 	*rl_gpu_buffer = pm->ib_buffer_obj->gpu_addr;

 	memset(*rl_buffer, 0, *rl_buffer_size);
 	pm->allocated = true;

 out:
 	mutex_unlock(&pm->lock);
 	return retval;
 }

 static int pm_create_runlist_ib(struct packet_manager *pm,
 				struct list_head *queues,
 				uint64_t *rl_gpu_addr,
 				size_t *rl_size_bytes)
 {
 	unsigned int alloc_size_bytes;
 	unsigned int *rl_buffer, rl_wptr, i;
 	int retval, processes_mapped;
 	struct device_process_node *cur;
 	struct qcm_process_device *qpd;
 	struct queue *q;
 	struct kernel_queue *kq;
 	bool is_over_subscription;

 	rl_wptr = retval = processes_mapped = 0;

 	retval = pm_allocate_runlist_ib(pm, &rl_buffer, rl_gpu_addr,
 				&alloc_size_bytes, &is_over_subscription);
 	if (retval)
 		return retval;

 	*rl_size_bytes = alloc_size_bytes;
 	pm->ib_size_bytes = alloc_size_bytes;

 	pr_debug("Building runlist ib process count: %d queues count %d\n",
 		pm->dqm->processes_count, pm->dqm->active_queue_count);

 	/* build the run list ib packet */
 	list_for_each_entry(cur, queues, list) {
 		qpd = cur->qpd;
 		/* build map process packet */
 		if (processes_mapped >= pm->dqm->processes_count) {
 			pr_debug("Not enough space left in runlist IB\n");
 			pm_release_ib(pm);
 			return -ENOMEM;
 		}

 		retval = pm->pmf->map_process(pm, &rl_buffer[rl_wptr], qpd);
 		if (retval)
 			return retval;

 		processes_mapped++;
 		inc_wptr(&rl_wptr, pm->pmf->map_process_size,
 				alloc_size_bytes);

 		list_for_each_entry(kq, &qpd->priv_queue_list, list) {
 			if (!kq->queue->properties.is_active)
 				continue;

 			pr_debug("static_queue, mapping kernel q %d, is debug status %d\n",
 				kq->queue->queue, qpd->is_debug);

 			retval = pm->pmf->map_queues(pm,
 						&rl_buffer[rl_wptr],
 						kq->queue,
 						qpd->is_debug);
 			if (retval)
 				return retval;

 			inc_wptr(&rl_wptr,
 				pm->pmf->map_queues_size,
 				alloc_size_bytes);
 		}

 		list_for_each_entry(q, &qpd->queues_list, list) {
 			if (!q->properties.is_active)
 				continue;

 			pr_debug("static_queue, mapping user queue %d, is debug status %d\n",
 				q->queue, qpd->is_debug);

 			retval = pm->pmf->map_queues(pm,
 						&rl_buffer[rl_wptr],
 						q,
 						qpd->is_debug);

 			if (retval)
 				return retval;

 			inc_wptr(&rl_wptr,
 				pm->pmf->map_queues_size,
 				alloc_size_bytes);
 		}
 	}

 	pr_debug("Finished map process and queues to runlist\n");

 	if (is_over_subscription) {
 		if (!pm->is_over_subscription)
 			pr_warn("Runlist is getting oversubscribed. Expect reduced ROCm performance.\n");
 		retval = pm->pmf->runlist(pm, &rl_buffer[rl_wptr],
 					*rl_gpu_addr,
 					alloc_size_bytes / sizeof(uint32_t),
 					true);
 	}
 	pm->is_over_subscription = is_over_subscription;

 	for (i = 0; i < alloc_size_bytes / sizeof(uint32_t); i++)
 		pr_debug("0x%2X ", rl_buffer[i]);
 	pr_debug("\n");

 	return retval;
 }

 int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm)
 {
 	switch (dqm->dev->adev->asic_type) {
 	case CHIP_KAVERI:
 	case CHIP_HAWAII:
 		/* PM4 packet structures on CIK are the same as on VI */
 	case CHIP_CARRIZO:
 	case CHIP_TONGA:
 	case CHIP_FIJI:
 	case CHIP_POLARIS10:
 	case CHIP_POLARIS11:
 	case CHIP_POLARIS12:
 	case CHIP_VEGAM:
 		pm->pmf = &kfd_vi_pm_funcs;
 		break;
 	default:
 		if (KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 2) ||
 		    KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 3))
 			pm->pmf = &kfd_aldebaran_pm_funcs;
 		else if (KFD_GC_VERSION(dqm->dev) >= IP_VERSION(9, 0, 1))
 			pm->pmf = &kfd_v9_pm_funcs;
 		else {
 			WARN(1, "Unexpected ASIC family %u",
 			     dqm->dev->adev->asic_type);
 			return -EINVAL;
 		}
 	}

 	pm->dqm = dqm;
 	mutex_init(&pm->lock);
 	pm->priv_queue = kernel_queue_init(dqm->dev, KFD_QUEUE_TYPE_HIQ);
 	if (!pm->priv_queue) {
 		mutex_destroy(&pm->lock);
 		return -ENOMEM;
 	}
 	pm->allocated = false;

 	return 0;
 }

 void pm_uninit(struct packet_manager *pm, bool hanging)
 {
 	mutex_destroy(&pm->lock);
 	kernel_queue_uninit(pm->priv_queue, hanging);
 	pm->priv_queue = NULL;
 }

 int pm_send_set_resources(struct packet_manager *pm,
 				struct scheduling_resources *res)
 {
 	uint32_t *buffer, size;
 	int retval = 0;

 	size = pm->pmf->set_resources_size;
 	mutex_lock(&pm->lock);
 	kq_acquire_packet_buffer(pm->priv_queue,
 					size / sizeof(uint32_t),
 					(unsigned int **)&buffer);
 	if (!buffer) {
 		pr_err("Failed to allocate buffer on kernel queue\n");
 		retval = -ENOMEM;
 		goto out;
 	}

 	retval = pm->pmf->set_resources(pm, buffer, res);
 	if (!retval)
 		retval = kq_submit_packet(pm->priv_queue);
 	else
 		kq_rollback_packet(pm->priv_queue);

 out:
 	mutex_unlock(&pm->lock);

 	return retval;
 }

 int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues)
 {
 	uint64_t rl_gpu_ib_addr;
 	uint32_t *rl_buffer;
 	size_t rl_ib_size, packet_size_dwords;
 	int retval;

 	retval = pm_create_runlist_ib(pm, dqm_queues, &rl_gpu_ib_addr,
 					&rl_ib_size);
 	if (retval)
 		goto fail_create_runlist_ib;

 	pr_debug("runlist IB address: 0x%llX\n", rl_gpu_ib_addr);

 	packet_size_dwords = pm->pmf->runlist_size / sizeof(uint32_t);
 	mutex_lock(&pm->lock);

 	retval = kq_acquire_packet_buffer(pm->priv_queue,
 					packet_size_dwords, &rl_buffer);
 	if (retval)
 		goto fail_acquire_packet_buffer;

 	retval = pm->pmf->runlist(pm, rl_buffer, rl_gpu_ib_addr,
 					rl_ib_size / sizeof(uint32_t), false);
 	if (retval)
 		goto fail_create_runlist;

 	retval = kq_submit_packet(pm->priv_queue);

 	mutex_unlock(&pm->lock);

 	return retval;

 fail_create_runlist:
 	kq_rollback_packet(pm->priv_queue);
 fail_acquire_packet_buffer:
 	mutex_unlock(&pm->lock);
 fail_create_runlist_ib:
 	pm_release_ib(pm);
 	return retval;
 }

 int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
 			uint64_t fence_value)
 {
 	uint32_t *buffer, size;
 	int retval = 0;

 	if (WARN_ON(!fence_address))
 		return -EFAULT;

 	size = pm->pmf->query_status_size;
 	mutex_lock(&pm->lock);
 	kq_acquire_packet_buffer(pm->priv_queue,
 			size / sizeof(uint32_t), (unsigned int **)&buffer);
 	if (!buffer) {
 		pr_err("Failed to allocate buffer on kernel queue\n");
 		retval = -ENOMEM;
 		goto out;
 	}

 	retval = pm->pmf->query_status(pm, buffer, fence_address, fence_value);
 	if (!retval)
 		retval = kq_submit_packet(pm->priv_queue);
 	else
 		kq_rollback_packet(pm->priv_queue);

 out:
 	mutex_unlock(&pm->lock);
 	return retval;
 }

 int pm_update_grace_period(struct packet_manager *pm, uint32_t grace_period)
 {
 	int retval = 0;
 	uint32_t *buffer, size;

 	size = pm->pmf->set_grace_period_size;

 	mutex_lock(&pm->lock);

 	if (size) {
 		kq_acquire_packet_buffer(pm->priv_queue,
 			size / sizeof(uint32_t),
 			(unsigned int **)&buffer);

 		if (!buffer) {
 			pr_err("Failed to allocate buffer on kernel queue\n");
 			retval = -ENOMEM;
 			goto out;
 		}

 		retval = pm->pmf->set_grace_period(pm, buffer, grace_period);
 		if (!retval)
 			retval = kq_submit_packet(pm->priv_queue);
 		else
 			kq_rollback_packet(pm->priv_queue);
 	}

 out:
 	mutex_unlock(&pm->lock);
 	return retval;
 }

 int pm_send_unmap_queue(struct packet_manager *pm,
 			enum kfd_unmap_queues_filter filter,
 			uint32_t filter_param, bool reset)
 {
 	uint32_t *buffer, size;
 	int retval = 0;

 	size = pm->pmf->unmap_queues_size;
 	mutex_lock(&pm->lock);
 	kq_acquire_packet_buffer(pm->priv_queue,
 			size / sizeof(uint32_t), (unsigned int **)&buffer);
 	if (!buffer) {
 		pr_err("Failed to allocate buffer on kernel queue\n");
 		retval = -ENOMEM;
 		goto out;
 	}

 	retval = pm->pmf->unmap_queues(pm, buffer, filter, filter_param, reset);
 	if (!retval)
 		retval = kq_submit_packet(pm->priv_queue);
 	else
 		kq_rollback_packet(pm->priv_queue);

 out:
 	mutex_unlock(&pm->lock);
 	return retval;
 }

 void pm_release_ib(struct packet_manager *pm)
 {
 	mutex_lock(&pm->lock);
 	if (pm->allocated) {
 		kfd_gtt_sa_free(pm->dqm->dev, pm->ib_buffer_obj);
 		pm->allocated = false;
 	}
 	mutex_unlock(&pm->lock);
 }

 #if defined(CONFIG_DEBUG_FS)

 int pm_debugfs_runlist(struct seq_file *m, void *data)
 {
 	struct packet_manager *pm = data;

 	mutex_lock(&pm->lock);

 	if (!pm->allocated) {
 		seq_puts(m, "  No active runlist\n");
 		goto out;
 	}

 	seq_hex_dump(m, "  ", DUMP_PREFIX_OFFSET, 32, 4,
 		     pm->ib_buffer_obj->cpu_ptr, pm->ib_size_bytes, false);

 out:
 	mutex_unlock(&pm->lock);
 	return 0;
 }

 int pm_debugfs_hang_hws(struct packet_manager *pm)
 {
 	uint32_t *buffer, size;
 	int r = 0;

 	if (!pm->priv_queue)
 		return -EAGAIN;

 	size = pm->pmf->query_status_size;
 	mutex_lock(&pm->lock);
 	kq_acquire_packet_buffer(pm->priv_queue,
 			size / sizeof(uint32_t), (unsigned int **)&buffer);
 	if (!buffer) {
 		pr_err("Failed to allocate buffer on kernel queue\n");
 		r = -ENOMEM;
 		goto out;
 	}
 	memset(buffer, 0x55, size);
 	kq_submit_packet(pm->priv_queue);

 	pr_info("Submitting %x %x %x %x %x %x %x to HIQ to hang the HWS.",
 		buffer[0], buffer[1], buffer[2], buffer[3],
 		buffer[4], buffer[5], buffer[6]);
 out:
 	mutex_unlock(&pm->lock);
 	return r;
 }


 #endif
	// SPDX-License-Identifier: GPL-2.0 OR MIT
	/*
	* 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"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	* OTHER DEALINGS IN THE SOFTWARE.
	*
	*/

	#include <linux/slab.h>
	#include <linux/mutex.h>
	#include "kfd_device_queue_manager.h"
	#include "kfd_kernel_queue.h"
	#include "kfd_priv.h"

	static inline void inc_wptr(unsigned int *wptr, unsigned int increment_bytes,
	unsigned int buffer_size_bytes)
	{
	unsigned int temp = *wptr + increment_bytes / sizeof(uint32_t);

	WARN((temp * sizeof(uint32_t)) > buffer_size_bytes,
	"Runlist IB overflow");
	*wptr = temp;
	}

	static void pm_calc_rlib_size(struct packet_manager *pm,
	unsigned int *rlib_size,
	bool *over_subscription)
	{
	unsigned int process_count, queue_count, compute_queue_count, gws_queue_count;
	unsigned int map_queue_size;
	unsigned int max_proc_per_quantum = 1;
	struct kfd_node *dev = pm->dqm->dev;

	process_count = pm->dqm->processes_count;
	queue_count = pm->dqm->active_queue_count;
	compute_queue_count = pm->dqm->active_cp_queue_count;
	gws_queue_count = pm->dqm->gws_queue_count;

	/* check if there is over subscription
	* Note: the arbitration between the number of VMIDs and
	* hws_max_conc_proc has been done in
	* kgd2kfd_device_init().
	*/
	*over_subscription = false;

	if (dev->max_proc_per_quantum > 1)
	max_proc_per_quantum = dev->max_proc_per_quantum;

	if ((process_count > max_proc_per_quantum) \|\|
	compute_queue_count > get_cp_queues_num(pm->dqm) \|\|
	gws_queue_count > 1) {
	*over_subscription = true;
	pr_debug("Over subscribed runlist\n");
	}

	map_queue_size = pm->pmf->map_queues_size;
	/* calculate run list ib allocation size */
	rlib_size = process_count pm->pmf->map_process_size +
	queue_count * map_queue_size;

	/*
	* Increase the allocation size in case we need a chained run list
	* when over subscription
	*/
	if (*over_subscription)
	*rlib_size += pm->pmf->runlist_size;

	pr_debug("runlist ib size %d\n", *rlib_size);
	}

	static int pm_allocate_runlist_ib(struct packet_manager *pm,
	unsigned int **rl_buffer,
	uint64_t *rl_gpu_buffer,
	unsigned int *rl_buffer_size,
	bool *is_over_subscription)
	{
	int retval;

	if (WARN_ON(pm->allocated))
	return -EINVAL;

	pm_calc_rlib_size(pm, rl_buffer_size, is_over_subscription);

	mutex_lock(&pm->lock);

	retval = kfd_gtt_sa_allocate(pm->dqm->dev, *rl_buffer_size,
	&pm->ib_buffer_obj);

	if (retval) {
	pr_err("Failed to allocate runlist IB\n");
	goto out;
	}

	(void *)rl_buffer = pm->ib_buffer_obj->cpu_ptr;
	*rl_gpu_buffer = pm->ib_buffer_obj->gpu_addr;

	memset(rl_buffer, 0, rl_buffer_size);
	pm->allocated = true;

	out:
	mutex_unlock(&pm->lock);
	return retval;
	}

	static int pm_create_runlist_ib(struct packet_manager *pm,
	struct list_head *queues,
	uint64_t *rl_gpu_addr,
	size_t *rl_size_bytes)
	{
	unsigned int alloc_size_bytes;
	unsigned int *rl_buffer, rl_wptr, i;
	int retval, processes_mapped;
	struct device_process_node *cur;
	struct qcm_process_device *qpd;
	struct queue *q;
	struct kernel_queue *kq;
	bool is_over_subscription;

	rl_wptr = retval = processes_mapped = 0;

	retval = pm_allocate_runlist_ib(pm, &rl_buffer, rl_gpu_addr,
	&alloc_size_bytes, &is_over_subscription);
	if (retval)
	return retval;

	*rl_size_bytes = alloc_size_bytes;
	pm->ib_size_bytes = alloc_size_bytes;

	pr_debug("Building runlist ib process count: %d queues count %d\n",
	pm->dqm->processes_count, pm->dqm->active_queue_count);

	/* build the run list ib packet */
	list_for_each_entry(cur, queues, list) {
	qpd = cur->qpd;
	/* build map process packet */
	if (processes_mapped >= pm->dqm->processes_count) {
	pr_debug("Not enough space left in runlist IB\n");
	pm_release_ib(pm);
	return -ENOMEM;
	}

	retval = pm->pmf->map_process(pm, &rl_buffer[rl_wptr], qpd);
	if (retval)
	return retval;

	processes_mapped++;
	inc_wptr(&rl_wptr, pm->pmf->map_process_size,
	alloc_size_bytes);

	list_for_each_entry(kq, &qpd->priv_queue_list, list) {
	if (!kq->queue->properties.is_active)
	continue;

	pr_debug("static_queue, mapping kernel q %d, is debug status %d\n",
	kq->queue->queue, qpd->is_debug);

	retval = pm->pmf->map_queues(pm,
	&rl_buffer[rl_wptr],
	kq->queue,
	qpd->is_debug);
	if (retval)
	return retval;

	inc_wptr(&rl_wptr,
	pm->pmf->map_queues_size,
	alloc_size_bytes);
	}

	list_for_each_entry(q, &qpd->queues_list, list) {
	if (!q->properties.is_active)
	continue;

	pr_debug("static_queue, mapping user queue %d, is debug status %d\n",
	q->queue, qpd->is_debug);

	retval = pm->pmf->map_queues(pm,
	&rl_buffer[rl_wptr],
	q,
	qpd->is_debug);

	if (retval)
	return retval;

	inc_wptr(&rl_wptr,
	pm->pmf->map_queues_size,
	alloc_size_bytes);
	}
	}

	pr_debug("Finished map process and queues to runlist\n");

	if (is_over_subscription) {
	if (!pm->is_over_subscription)
	pr_warn("Runlist is getting oversubscribed. Expect reduced ROCm performance.\n");
	retval = pm->pmf->runlist(pm, &rl_buffer[rl_wptr],
	*rl_gpu_addr,
	alloc_size_bytes / sizeof(uint32_t),
	true);
	}
	pm->is_over_subscription = is_over_subscription;

	for (i = 0; i < alloc_size_bytes / sizeof(uint32_t); i++)
	pr_debug("0x%2X ", rl_buffer[i]);
	pr_debug("\n");

	return retval;
	}

	int pm_init(struct packet_manager pm, struct device_queue_manager dqm)
	{
	switch (dqm->dev->adev->asic_type) {
	case CHIP_KAVERI:
	case CHIP_HAWAII:
	/* PM4 packet structures on CIK are the same as on VI */
	case CHIP_CARRIZO:
	case CHIP_TONGA:
	case CHIP_FIJI:
	case CHIP_POLARIS10:
	case CHIP_POLARIS11:
	case CHIP_POLARIS12:
	case CHIP_VEGAM:
	pm->pmf = &kfd_vi_pm_funcs;
	break;
	default:
	if (KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 2) \|\|
	KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 3))
	pm->pmf = &kfd_aldebaran_pm_funcs;
	else if (KFD_GC_VERSION(dqm->dev) >= IP_VERSION(9, 0, 1))
	pm->pmf = &kfd_v9_pm_funcs;
	else {
	WARN(1, "Unexpected ASIC family %u",
	dqm->dev->adev->asic_type);
	return -EINVAL;
	}
	}

	pm->dqm = dqm;
	mutex_init(&pm->lock);
	pm->priv_queue = kernel_queue_init(dqm->dev, KFD_QUEUE_TYPE_HIQ);
	if (!pm->priv_queue) {
	mutex_destroy(&pm->lock);
	return -ENOMEM;
	}
	pm->allocated = false;

	return 0;
	}

	void pm_uninit(struct packet_manager *pm, bool hanging)
	{
	mutex_destroy(&pm->lock);
	kernel_queue_uninit(pm->priv_queue, hanging);
	pm->priv_queue = NULL;
	}

	int pm_send_set_resources(struct packet_manager *pm,
	struct scheduling_resources *res)
	{
	uint32_t *buffer, size;
	int retval = 0;

	size = pm->pmf->set_resources_size;
	mutex_lock(&pm->lock);
	kq_acquire_packet_buffer(pm->priv_queue,
	size / sizeof(uint32_t),
	(unsigned int **)&buffer);
	if (!buffer) {
	pr_err("Failed to allocate buffer on kernel queue\n");
	retval = -ENOMEM;
	goto out;
	}

	retval = pm->pmf->set_resources(pm, buffer, res);
	if (!retval)
	retval = kq_submit_packet(pm->priv_queue);
	else
	kq_rollback_packet(pm->priv_queue);

	out:
	mutex_unlock(&pm->lock);

	return retval;
	}

	int pm_send_runlist(struct packet_manager pm, struct list_head dqm_queues)
	{
	uint64_t rl_gpu_ib_addr;
	uint32_t *rl_buffer;
	size_t rl_ib_size, packet_size_dwords;
	int retval;

	retval = pm_create_runlist_ib(pm, dqm_queues, &rl_gpu_ib_addr,
	&rl_ib_size);
	if (retval)
	goto fail_create_runlist_ib;

	pr_debug("runlist IB address: 0x%llX\n", rl_gpu_ib_addr);

	packet_size_dwords = pm->pmf->runlist_size / sizeof(uint32_t);
	mutex_lock(&pm->lock);

	retval = kq_acquire_packet_buffer(pm->priv_queue,
	packet_size_dwords, &rl_buffer);
	if (retval)
	goto fail_acquire_packet_buffer;

	retval = pm->pmf->runlist(pm, rl_buffer, rl_gpu_ib_addr,
	rl_ib_size / sizeof(uint32_t), false);
	if (retval)
	goto fail_create_runlist;

	retval = kq_submit_packet(pm->priv_queue);

	mutex_unlock(&pm->lock);

	return retval;

	fail_create_runlist:
	kq_rollback_packet(pm->priv_queue);
	fail_acquire_packet_buffer:
	mutex_unlock(&pm->lock);
	fail_create_runlist_ib:
	pm_release_ib(pm);
	return retval;
	}

	int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
	uint64_t fence_value)
	{
	uint32_t *buffer, size;
	int retval = 0;

	if (WARN_ON(!fence_address))
	return -EFAULT;

	size = pm->pmf->query_status_size;
	mutex_lock(&pm->lock);
	kq_acquire_packet_buffer(pm->priv_queue,
	size / sizeof(uint32_t), (unsigned int **)&buffer);
	if (!buffer) {
	pr_err("Failed to allocate buffer on kernel queue\n");
	retval = -ENOMEM;
	goto out;
	}

	retval = pm->pmf->query_status(pm, buffer, fence_address, fence_value);
	if (!retval)
	retval = kq_submit_packet(pm->priv_queue);
	else
	kq_rollback_packet(pm->priv_queue);

	out:
	mutex_unlock(&pm->lock);
	return retval;
	}

	int pm_update_grace_period(struct packet_manager *pm, uint32_t grace_period)
	{
	int retval = 0;
	uint32_t *buffer, size;

	size = pm->pmf->set_grace_period_size;

	mutex_lock(&pm->lock);

	if (size) {
	kq_acquire_packet_buffer(pm->priv_queue,
	size / sizeof(uint32_t),
	(unsigned int **)&buffer);

	if (!buffer) {
	pr_err("Failed to allocate buffer on kernel queue\n");
	retval = -ENOMEM;
	goto out;
	}

	retval = pm->pmf->set_grace_period(pm, buffer, grace_period);
	if (!retval)
	retval = kq_submit_packet(pm->priv_queue);
	else
	kq_rollback_packet(pm->priv_queue);
	}

	out:
	mutex_unlock(&pm->lock);
	return retval;
	}

	int pm_send_unmap_queue(struct packet_manager *pm,
	enum kfd_unmap_queues_filter filter,
	uint32_t filter_param, bool reset)
	{
	uint32_t *buffer, size;
	int retval = 0;

	size = pm->pmf->unmap_queues_size;
	mutex_lock(&pm->lock);
	kq_acquire_packet_buffer(pm->priv_queue,
	size / sizeof(uint32_t), (unsigned int **)&buffer);
	if (!buffer) {
	pr_err("Failed to allocate buffer on kernel queue\n");
	retval = -ENOMEM;
	goto out;
	}

	retval = pm->pmf->unmap_queues(pm, buffer, filter, filter_param, reset);
	if (!retval)
	retval = kq_submit_packet(pm->priv_queue);
	else
	kq_rollback_packet(pm->priv_queue);

	out:
	mutex_unlock(&pm->lock);
	return retval;
	}

	void pm_release_ib(struct packet_manager *pm)
	{
	mutex_lock(&pm->lock);
	if (pm->allocated) {
	kfd_gtt_sa_free(pm->dqm->dev, pm->ib_buffer_obj);
	pm->allocated = false;
	}
	mutex_unlock(&pm->lock);
	}

	#if defined(CONFIG_DEBUG_FS)

	int pm_debugfs_runlist(struct seq_file m, void data)
	{
	struct packet_manager *pm = data;

	mutex_lock(&pm->lock);

	if (!pm->allocated) {
	seq_puts(m, " No active runlist\n");
	goto out;
	}

	seq_hex_dump(m, " ", DUMP_PREFIX_OFFSET, 32, 4,
	pm->ib_buffer_obj->cpu_ptr, pm->ib_size_bytes, false);

	out:
	mutex_unlock(&pm->lock);
	return 0;
	}

	int pm_debugfs_hang_hws(struct packet_manager *pm)
	{
	uint32_t *buffer, size;
	int r = 0;

	if (!pm->priv_queue)
	return -EAGAIN;

	size = pm->pmf->query_status_size;
	mutex_lock(&pm->lock);
	kq_acquire_packet_buffer(pm->priv_queue,
	size / sizeof(uint32_t), (unsigned int **)&buffer);
	if (!buffer) {
	pr_err("Failed to allocate buffer on kernel queue\n");
	r = -ENOMEM;
	goto out;
	}
	memset(buffer, 0x55, size);
	kq_submit_packet(pm->priv_queue);

	pr_info("Submitting %x %x %x %x %x %x %x to HIQ to hang the HWS.",
	buffer[0], buffer[1], buffer[2], buffer[3],
	buffer[4], buffer[5], buffer[6]);
	out:
	mutex_unlock(&pm->lock);
	return r;
	}


	#endif