drivers/gpu/drm/amd/amdkfd/kfd_mqd_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 "kfd_mqd_manager.h"
 #include "amdgpu_amdkfd.h"
 #include "kfd_device_queue_manager.h"

 /* Mapping queue priority to pipe priority, indexed by queue priority */
 int pipe_priority_map[] = {
 	KFD_PIPE_PRIORITY_CS_LOW,
 	KFD_PIPE_PRIORITY_CS_LOW,
 	KFD_PIPE_PRIORITY_CS_LOW,
 	KFD_PIPE_PRIORITY_CS_LOW,
 	KFD_PIPE_PRIORITY_CS_LOW,
 	KFD_PIPE_PRIORITY_CS_LOW,
 	KFD_PIPE_PRIORITY_CS_LOW,
 	KFD_PIPE_PRIORITY_CS_MEDIUM,
 	KFD_PIPE_PRIORITY_CS_MEDIUM,
 	KFD_PIPE_PRIORITY_CS_MEDIUM,
 	KFD_PIPE_PRIORITY_CS_MEDIUM,
 	KFD_PIPE_PRIORITY_CS_HIGH,
 	KFD_PIPE_PRIORITY_CS_HIGH,
 	KFD_PIPE_PRIORITY_CS_HIGH,
 	KFD_PIPE_PRIORITY_CS_HIGH,
 	KFD_PIPE_PRIORITY_CS_HIGH
 };

 struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_node *dev, struct queue_properties *q)
 {
 	struct kfd_mem_obj *mqd_mem_obj;

 	mqd_mem_obj = kzalloc(sizeof(struct kfd_mem_obj), GFP_KERNEL);
 	if (!mqd_mem_obj)
 		return NULL;

 	mqd_mem_obj->gtt_mem = dev->dqm->hiq_sdma_mqd.gtt_mem;
 	mqd_mem_obj->gpu_addr = dev->dqm->hiq_sdma_mqd.gpu_addr;
 	mqd_mem_obj->cpu_ptr = dev->dqm->hiq_sdma_mqd.cpu_ptr;

 	return mqd_mem_obj;
 }

 struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_node *dev,
 					struct queue_properties *q)
 {
 	struct kfd_mem_obj *mqd_mem_obj;
 	uint64_t offset;

 	mqd_mem_obj = kzalloc(sizeof(struct kfd_mem_obj), GFP_KERNEL);
 	if (!mqd_mem_obj)
 		return NULL;

 	offset = (q->sdma_engine_id *
 		dev->kfd->device_info.num_sdma_queues_per_engine +
 		q->sdma_queue_id) *
 		dev->dqm->mqd_mgrs[KFD_MQD_TYPE_SDMA]->mqd_size;

 	offset += dev->dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ]->mqd_size *
 		  NUM_XCC(dev->xcc_mask);

 	mqd_mem_obj->gtt_mem = (void *)((uint64_t)dev->dqm->hiq_sdma_mqd.gtt_mem
 				+ offset);
 	mqd_mem_obj->gpu_addr = dev->dqm->hiq_sdma_mqd.gpu_addr + offset;
 	mqd_mem_obj->cpu_ptr = (uint32_t *)((uint64_t)
 				dev->dqm->hiq_sdma_mqd.cpu_ptr + offset);

 	return mqd_mem_obj;
 }

 void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
 			struct kfd_mem_obj *mqd_mem_obj)
 {
 	WARN_ON(!mqd_mem_obj->gtt_mem);
 	kfree(mqd_mem_obj);
 }

 void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm,
 		const uint32_t *cu_mask, uint32_t cu_mask_count,
 		uint32_t *se_mask, uint32_t inst)
 {
 	struct amdgpu_cu_info *cu_info = &mm->dev->adev->gfx.cu_info;
 	struct amdgpu_gfx_config *gfx_info = &mm->dev->adev->gfx.config;
 	uint32_t cu_per_sh[KFD_MAX_NUM_SE][KFD_MAX_NUM_SH_PER_SE] = {0};
 	bool wgp_mode_req = KFD_GC_VERSION(mm->dev) >= IP_VERSION(10, 0, 0);
 	uint32_t en_mask = wgp_mode_req ? 0x3 : 0x1;
 	int i, se, sh, cu, cu_bitmap_sh_mul, cu_inc = wgp_mode_req ? 2 : 1;
 	uint32_t cu_active_per_node;
 	int inc = cu_inc * NUM_XCC(mm->dev->xcc_mask);
 	int xcc_inst = inst + ffs(mm->dev->xcc_mask) - 1;

 	cu_active_per_node = cu_info->number / mm->dev->kfd->num_nodes;
 	if (cu_mask_count > cu_active_per_node)
 		cu_mask_count = cu_active_per_node;

 	/* Exceeding these bounds corrupts the stack and indicates a coding error.
 	 * Returning with no CU's enabled will hang the queue, which should be
 	 * attention grabbing.
 	 */
 	if (gfx_info->max_shader_engines > KFD_MAX_NUM_SE) {
 		dev_err(mm->dev->adev->dev,
 			"Exceeded KFD_MAX_NUM_SE, chip reports %d\n",
 			gfx_info->max_shader_engines);
 		return;
 	}
 	if (gfx_info->max_sh_per_se > KFD_MAX_NUM_SH_PER_SE) {
 		dev_err(mm->dev->adev->dev,
 			"Exceeded KFD_MAX_NUM_SH, chip reports %d\n",
 			gfx_info->max_sh_per_se * gfx_info->max_shader_engines);
 		return;
 	}

 	cu_bitmap_sh_mul = (KFD_GC_VERSION(mm->dev) >= IP_VERSION(11, 0, 0) &&
 			    KFD_GC_VERSION(mm->dev) < IP_VERSION(13, 0, 0)) ? 2 : 1;

 	/* Count active CUs per SH.
 	 *
 	 * Some CUs in an SH may be disabled.	HW expects disabled CUs to be
 	 * represented in the high bits of each SH's enable mask (the upper and lower
 	 * 16 bits of se_mask) and will take care of the actual distribution of
 	 * disabled CUs within each SH automatically.
 	 * Each half of se_mask must be filled only on bits 0-cu_per_sh[se][sh]-1.
 	 *
 	 * See note on Arcturus cu_bitmap layout in gfx_v9_0_get_cu_info.
 	 * See note on GFX11 cu_bitmap layout in gfx_v11_0_get_cu_info.
 	 */
 	for (se = 0; se < gfx_info->max_shader_engines; se++)
 		for (sh = 0; sh < gfx_info->max_sh_per_se; sh++)
 			cu_per_sh[se][sh] = hweight32(
 				cu_info->bitmap[xcc_inst][se % 4][sh + (se / 4) *
 				cu_bitmap_sh_mul]);

 	/* Symmetrically map cu_mask to all SEs & SHs:
 	 * se_mask programs up to 2 SH in the upper and lower 16 bits.
 	 *
 	 * Examples
 	 * Assuming 1 SH/SE, 4 SEs:
 	 * cu_mask[0] bit0 -> se_mask[0] bit0
 	 * cu_mask[0] bit1 -> se_mask[1] bit0
 	 * ...
 	 * cu_mask[0] bit4 -> se_mask[0] bit1
 	 * ...
 	 *
 	 * Assuming 2 SH/SE, 4 SEs
 	 * cu_mask[0] bit0 -> se_mask[0] bit0 (SE0,SH0,CU0)
 	 * cu_mask[0] bit1 -> se_mask[1] bit0 (SE1,SH0,CU0)
 	 * ...
 	 * cu_mask[0] bit4 -> se_mask[0] bit16 (SE0,SH1,CU0)
 	 * cu_mask[0] bit5 -> se_mask[1] bit16 (SE1,SH1,CU0)
 	 * ...
 	 * cu_mask[0] bit8 -> se_mask[0] bit1 (SE0,SH0,CU1)
 	 * ...
 	 *
 	 * For GFX 9.4.3, the following code only looks at a
 	 * subset of the cu_mask corresponding to the inst parameter.
 	 * If we have n XCCs under one GPU node
 	 * cu_mask[0] bit0 -> XCC0 se_mask[0] bit0 (XCC0,SE0,SH0,CU0)
 	 * cu_mask[0] bit1 -> XCC1 se_mask[0] bit0 (XCC1,SE0,SH0,CU0)
 	 * ..
 	 * cu_mask[0] bitn -> XCCn se_mask[0] bit0 (XCCn,SE0,SH0,CU0)
 	 * cu_mask[0] bit n+1 -> XCC0 se_mask[1] bit0 (XCC0,SE1,SH0,CU0)
 	 *
 	 * For example, if there are 6 XCCs under 1 KFD node, this code
 	 * running for each inst, will look at the bits as:
 	 * inst, inst + 6, inst + 12...
 	 *
 	 * First ensure all CUs are disabled, then enable user specified CUs.
 	 */
 	for (i = 0; i < gfx_info->max_shader_engines; i++)
 		se_mask[i] = 0;

 	i = inst;
 	for (cu = 0; cu < 16; cu += cu_inc) {
 		for (sh = 0; sh < gfx_info->max_sh_per_se; sh++) {
 			for (se = 0; se < gfx_info->max_shader_engines; se++) {
 				if (cu_per_sh[se][sh] > cu) {
 					if (cu_mask[i / 32] & (en_mask << (i % 32)))
 						se_mask[se] |= en_mask << (cu + sh * 16);
 					i += inc;
 					if (i >= cu_mask_count)
 						return;
 				}
 			}
 		}
 	}
 }

 int kfd_hiq_load_mqd_kiq(struct mqd_manager *mm, void *mqd,
 		     uint32_t pipe_id, uint32_t queue_id,
 		     struct queue_properties *p, struct mm_struct *mms)
 {
 	return mm->dev->kfd2kgd->hiq_mqd_load(mm->dev->adev, mqd, pipe_id,
 					      queue_id, p->doorbell_off, 0);
 }

 int kfd_destroy_mqd_cp(struct mqd_manager *mm, void *mqd,
 		enum kfd_preempt_type type, unsigned int timeout,
 		uint32_t pipe_id, uint32_t queue_id)
 {
 	return mm->dev->kfd2kgd->hqd_destroy(mm->dev->adev, mqd, type, timeout,
 						pipe_id, queue_id, 0);
 }

 void kfd_free_mqd_cp(struct mqd_manager *mm, void *mqd,
 	      struct kfd_mem_obj *mqd_mem_obj)
 {
 	if (mqd_mem_obj->gtt_mem) {
 		amdgpu_amdkfd_free_gtt_mem(mm->dev->adev, &mqd_mem_obj->gtt_mem);
 		kfree(mqd_mem_obj);
 	} else {
 		kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
 	}
 }

 bool kfd_is_occupied_cp(struct mqd_manager *mm, void *mqd,
 		 uint64_t queue_address, uint32_t pipe_id,
 		 uint32_t queue_id)
 {
 	return mm->dev->kfd2kgd->hqd_is_occupied(mm->dev->adev, queue_address,
 						pipe_id, queue_id, 0);
 }

 int kfd_load_mqd_sdma(struct mqd_manager *mm, void *mqd,
 		  uint32_t pipe_id, uint32_t queue_id,
 		  struct queue_properties *p, struct mm_struct *mms)
 {
 	return mm->dev->kfd2kgd->hqd_sdma_load(mm->dev->adev, mqd,
 						(uint32_t __user *)p->write_ptr,
 						mms);
 }

 /*
  * preempt type here is ignored because there is only one way
  * to preempt sdma queue
  */
 int kfd_destroy_mqd_sdma(struct mqd_manager *mm, void *mqd,
 		     enum kfd_preempt_type type,
 		     unsigned int timeout, uint32_t pipe_id,
 		     uint32_t queue_id)
 {
 	return mm->dev->kfd2kgd->hqd_sdma_destroy(mm->dev->adev, mqd, timeout);
 }

 bool kfd_is_occupied_sdma(struct mqd_manager *mm, void *mqd,
 		      uint64_t queue_address, uint32_t pipe_id,
 		      uint32_t queue_id)
 {
 	return mm->dev->kfd2kgd->hqd_sdma_is_occupied(mm->dev->adev, mqd);
 }

 uint64_t kfd_hiq_mqd_stride(struct kfd_node *dev)
 {
 	return dev->dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ]->mqd_size;
 }

 void kfd_get_hiq_xcc_mqd(struct kfd_node *dev, struct kfd_mem_obj *mqd_mem_obj,
 		     uint32_t virtual_xcc_id)
 {
 	uint64_t offset;

 	offset = kfd_hiq_mqd_stride(dev) * virtual_xcc_id;

 	mqd_mem_obj->gtt_mem = (virtual_xcc_id == 0) ?
 			dev->dqm->hiq_sdma_mqd.gtt_mem : NULL;
 	mqd_mem_obj->gpu_addr = dev->dqm->hiq_sdma_mqd.gpu_addr + offset;
 	mqd_mem_obj->cpu_ptr = (uint32_t *)((uintptr_t)
 				dev->dqm->hiq_sdma_mqd.cpu_ptr + offset);
 }

 uint64_t kfd_mqd_stride(struct mqd_manager *mm,
 			struct queue_properties *q)
 {
 	return mm->mqd_size;
 }

 bool kfd_check_hiq_mqd_doorbell_id(struct kfd_node *node, uint32_t doorbell_id,
 				   uint32_t inst)
 {
 	if (doorbell_id) {
 		struct device *dev = node->adev->dev;

 		if (node->adev->xcp_mgr && node->adev->xcp_mgr->num_xcps > 0)
 			dev_err(dev, "XCC %d: Queue preemption failed for queue with doorbell_id: %x\n",
 							inst, doorbell_id);
 		else
 			dev_err(dev, "Queue preemption failed for queue with doorbell_id: %x\n",
 							doorbell_id);
 		return true;
 	}

 	return false;
 }
	// 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 "kfd_mqd_manager.h"
	#include "amdgpu_amdkfd.h"
	#include "kfd_device_queue_manager.h"

	/* Mapping queue priority to pipe priority, indexed by queue priority */
	int pipe_priority_map[] = {
	KFD_PIPE_PRIORITY_CS_LOW,
	KFD_PIPE_PRIORITY_CS_LOW,
	KFD_PIPE_PRIORITY_CS_LOW,
	KFD_PIPE_PRIORITY_CS_LOW,
	KFD_PIPE_PRIORITY_CS_LOW,
	KFD_PIPE_PRIORITY_CS_LOW,
	KFD_PIPE_PRIORITY_CS_LOW,
	KFD_PIPE_PRIORITY_CS_MEDIUM,
	KFD_PIPE_PRIORITY_CS_MEDIUM,
	KFD_PIPE_PRIORITY_CS_MEDIUM,
	KFD_PIPE_PRIORITY_CS_MEDIUM,
	KFD_PIPE_PRIORITY_CS_HIGH,
	KFD_PIPE_PRIORITY_CS_HIGH,
	KFD_PIPE_PRIORITY_CS_HIGH,
	KFD_PIPE_PRIORITY_CS_HIGH,
	KFD_PIPE_PRIORITY_CS_HIGH
	};

	struct kfd_mem_obj allocate_hiq_mqd(struct kfd_node dev, struct queue_properties *q)
	{
	struct kfd_mem_obj *mqd_mem_obj;

	mqd_mem_obj = kzalloc(sizeof(struct kfd_mem_obj), GFP_KERNEL);
	if (!mqd_mem_obj)
	return NULL;

	mqd_mem_obj->gtt_mem = dev->dqm->hiq_sdma_mqd.gtt_mem;
	mqd_mem_obj->gpu_addr = dev->dqm->hiq_sdma_mqd.gpu_addr;
	mqd_mem_obj->cpu_ptr = dev->dqm->hiq_sdma_mqd.cpu_ptr;

	return mqd_mem_obj;
	}

	struct kfd_mem_obj allocate_sdma_mqd(struct kfd_node dev,
	struct queue_properties *q)
	{
	struct kfd_mem_obj *mqd_mem_obj;
	uint64_t offset;

	mqd_mem_obj = kzalloc(sizeof(struct kfd_mem_obj), GFP_KERNEL);
	if (!mqd_mem_obj)
	return NULL;

	offset = (q->sdma_engine_id *
	dev->kfd->device_info.num_sdma_queues_per_engine +
	q->sdma_queue_id) *
	dev->dqm->mqd_mgrs[KFD_MQD_TYPE_SDMA]->mqd_size;

	offset += dev->dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ]->mqd_size *
	NUM_XCC(dev->xcc_mask);

	mqd_mem_obj->gtt_mem = (void *)((uint64_t)dev->dqm->hiq_sdma_mqd.gtt_mem
	+ offset);
	mqd_mem_obj->gpu_addr = dev->dqm->hiq_sdma_mqd.gpu_addr + offset;
	mqd_mem_obj->cpu_ptr = (uint32_t *)((uint64_t)
	dev->dqm->hiq_sdma_mqd.cpu_ptr + offset);

	return mqd_mem_obj;
	}

	void free_mqd_hiq_sdma(struct mqd_manager mm, void mqd,
	struct kfd_mem_obj *mqd_mem_obj)
	{
	WARN_ON(!mqd_mem_obj->gtt_mem);
	kfree(mqd_mem_obj);
	}

	void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm,
	const uint32_t *cu_mask, uint32_t cu_mask_count,
	uint32_t *se_mask, uint32_t inst)
	{
	struct amdgpu_cu_info *cu_info = &mm->dev->adev->gfx.cu_info;
	struct amdgpu_gfx_config *gfx_info = &mm->dev->adev->gfx.config;
	uint32_t cu_per_sh[KFD_MAX_NUM_SE][KFD_MAX_NUM_SH_PER_SE] = {0};
	bool wgp_mode_req = KFD_GC_VERSION(mm->dev) >= IP_VERSION(10, 0, 0);
	uint32_t en_mask = wgp_mode_req ? 0x3 : 0x1;
	int i, se, sh, cu, cu_bitmap_sh_mul, cu_inc = wgp_mode_req ? 2 : 1;
	uint32_t cu_active_per_node;
	int inc = cu_inc * NUM_XCC(mm->dev->xcc_mask);
	int xcc_inst = inst + ffs(mm->dev->xcc_mask) - 1;

	cu_active_per_node = cu_info->number / mm->dev->kfd->num_nodes;
	if (cu_mask_count > cu_active_per_node)
	cu_mask_count = cu_active_per_node;

	/* Exceeding these bounds corrupts the stack and indicates a coding error.
	* Returning with no CU's enabled will hang the queue, which should be
	* attention grabbing.
	*/
	if (gfx_info->max_shader_engines > KFD_MAX_NUM_SE) {
	dev_err(mm->dev->adev->dev,
	"Exceeded KFD_MAX_NUM_SE, chip reports %d\n",
	gfx_info->max_shader_engines);
	return;
	}
	if (gfx_info->max_sh_per_se > KFD_MAX_NUM_SH_PER_SE) {
	dev_err(mm->dev->adev->dev,
	"Exceeded KFD_MAX_NUM_SH, chip reports %d\n",
	gfx_info->max_sh_per_se * gfx_info->max_shader_engines);
	return;
	}

	cu_bitmap_sh_mul = (KFD_GC_VERSION(mm->dev) >= IP_VERSION(11, 0, 0) &&
	KFD_GC_VERSION(mm->dev) < IP_VERSION(13, 0, 0)) ? 2 : 1;

	/* Count active CUs per SH.
	*
	* Some CUs in an SH may be disabled. HW expects disabled CUs to be
	* represented in the high bits of each SH's enable mask (the upper and lower
	* 16 bits of se_mask) and will take care of the actual distribution of
	* disabled CUs within each SH automatically.
	* Each half of se_mask must be filled only on bits 0-cu_per_sh[se][sh]-1.
	*
	* See note on Arcturus cu_bitmap layout in gfx_v9_0_get_cu_info.
	* See note on GFX11 cu_bitmap layout in gfx_v11_0_get_cu_info.
	*/
	for (se = 0; se < gfx_info->max_shader_engines; se++)
	for (sh = 0; sh < gfx_info->max_sh_per_se; sh++)
	cu_per_sh[se][sh] = hweight32(
	cu_info->bitmap[xcc_inst][se % 4][sh + (se / 4) *
	cu_bitmap_sh_mul]);

	/* Symmetrically map cu_mask to all SEs & SHs:
	* se_mask programs up to 2 SH in the upper and lower 16 bits.
	*
	* Examples
	* Assuming 1 SH/SE, 4 SEs:
	* cu_mask[0] bit0 -> se_mask[0] bit0
	* cu_mask[0] bit1 -> se_mask[1] bit0
	* ...
	* cu_mask[0] bit4 -> se_mask[0] bit1
	* ...
	*
	* Assuming 2 SH/SE, 4 SEs
	* cu_mask[0] bit0 -> se_mask[0] bit0 (SE0,SH0,CU0)
	* cu_mask[0] bit1 -> se_mask[1] bit0 (SE1,SH0,CU0)
	* ...
	* cu_mask[0] bit4 -> se_mask[0] bit16 (SE0,SH1,CU0)
	* cu_mask[0] bit5 -> se_mask[1] bit16 (SE1,SH1,CU0)
	* ...
	* cu_mask[0] bit8 -> se_mask[0] bit1 (SE0,SH0,CU1)
	* ...
	*
	* For GFX 9.4.3, the following code only looks at a
	* subset of the cu_mask corresponding to the inst parameter.
	* If we have n XCCs under one GPU node
	* cu_mask[0] bit0 -> XCC0 se_mask[0] bit0 (XCC0,SE0,SH0,CU0)
	* cu_mask[0] bit1 -> XCC1 se_mask[0] bit0 (XCC1,SE0,SH0,CU0)
	* ..
	* cu_mask[0] bitn -> XCCn se_mask[0] bit0 (XCCn,SE0,SH0,CU0)
	* cu_mask[0] bit n+1 -> XCC0 se_mask[1] bit0 (XCC0,SE1,SH0,CU0)
	*
	* For example, if there are 6 XCCs under 1 KFD node, this code
	* running for each inst, will look at the bits as:
	* inst, inst + 6, inst + 12...
	*
	* First ensure all CUs are disabled, then enable user specified CUs.
	*/
	for (i = 0; i < gfx_info->max_shader_engines; i++)
	se_mask[i] = 0;

	i = inst;
	for (cu = 0; cu < 16; cu += cu_inc) {
	for (sh = 0; sh < gfx_info->max_sh_per_se; sh++) {
	for (se = 0; se < gfx_info->max_shader_engines; se++) {
	if (cu_per_sh[se][sh] > cu) {
	if (cu_mask[i / 32] & (en_mask << (i % 32)))
	se_mask[se] \|= en_mask << (cu + sh * 16);
	i += inc;
	if (i >= cu_mask_count)
	return;
	}
	}
	}
	}
	}

	int kfd_hiq_load_mqd_kiq(struct mqd_manager mm, void mqd,
	uint32_t pipe_id, uint32_t queue_id,
	struct queue_properties p, struct mm_struct mms)
	{
	return mm->dev->kfd2kgd->hiq_mqd_load(mm->dev->adev, mqd, pipe_id,
	queue_id, p->doorbell_off, 0);
	}

	int kfd_destroy_mqd_cp(struct mqd_manager mm, void mqd,
	enum kfd_preempt_type type, unsigned int timeout,
	uint32_t pipe_id, uint32_t queue_id)
	{
	return mm->dev->kfd2kgd->hqd_destroy(mm->dev->adev, mqd, type, timeout,
	pipe_id, queue_id, 0);
	}

	void kfd_free_mqd_cp(struct mqd_manager mm, void mqd,
	struct kfd_mem_obj *mqd_mem_obj)
	{
	if (mqd_mem_obj->gtt_mem) {
	amdgpu_amdkfd_free_gtt_mem(mm->dev->adev, &mqd_mem_obj->gtt_mem);
	kfree(mqd_mem_obj);
	} else {
	kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
	}
	}

	bool kfd_is_occupied_cp(struct mqd_manager mm, void mqd,
	uint64_t queue_address, uint32_t pipe_id,
	uint32_t queue_id)
	{
	return mm->dev->kfd2kgd->hqd_is_occupied(mm->dev->adev, queue_address,
	pipe_id, queue_id, 0);
	}

	int kfd_load_mqd_sdma(struct mqd_manager mm, void mqd,
	uint32_t pipe_id, uint32_t queue_id,
	struct queue_properties p, struct mm_struct mms)
	{
	return mm->dev->kfd2kgd->hqd_sdma_load(mm->dev->adev, mqd,
	(uint32_t __user *)p->write_ptr,
	mms);
	}

	/*
	* preempt type here is ignored because there is only one way
	* to preempt sdma queue
	*/
	int kfd_destroy_mqd_sdma(struct mqd_manager mm, void mqd,
	enum kfd_preempt_type type,
	unsigned int timeout, uint32_t pipe_id,
	uint32_t queue_id)
	{
	return mm->dev->kfd2kgd->hqd_sdma_destroy(mm->dev->adev, mqd, timeout);
	}

	bool kfd_is_occupied_sdma(struct mqd_manager mm, void mqd,
	uint64_t queue_address, uint32_t pipe_id,
	uint32_t queue_id)
	{
	return mm->dev->kfd2kgd->hqd_sdma_is_occupied(mm->dev->adev, mqd);
	}

	uint64_t kfd_hiq_mqd_stride(struct kfd_node *dev)
	{
	return dev->dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ]->mqd_size;
	}

	void kfd_get_hiq_xcc_mqd(struct kfd_node dev, struct kfd_mem_obj mqd_mem_obj,
	uint32_t virtual_xcc_id)
	{
	uint64_t offset;

	offset = kfd_hiq_mqd_stride(dev) * virtual_xcc_id;

	mqd_mem_obj->gtt_mem = (virtual_xcc_id == 0) ?
	dev->dqm->hiq_sdma_mqd.gtt_mem : NULL;
	mqd_mem_obj->gpu_addr = dev->dqm->hiq_sdma_mqd.gpu_addr + offset;
	mqd_mem_obj->cpu_ptr = (uint32_t *)((uintptr_t)
	dev->dqm->hiq_sdma_mqd.cpu_ptr + offset);
	}

	uint64_t kfd_mqd_stride(struct mqd_manager *mm,
	struct queue_properties *q)
	{
	return mm->mqd_size;
	}

	bool kfd_check_hiq_mqd_doorbell_id(struct kfd_node *node, uint32_t doorbell_id,
	uint32_t inst)
	{
	if (doorbell_id) {
	struct device *dev = node->adev->dev;

	if (node->adev->xcp_mgr && node->adev->xcp_mgr->num_xcps > 0)
	dev_err(dev, "XCC %d: Queue preemption failed for queue with doorbell_id: %x\n",
	inst, doorbell_id);
	else
	dev_err(dev, "Queue preemption failed for queue with doorbell_id: %x\n",
	doorbell_id);
	return true;
	}

	return false;
	}