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path: root/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v11.c
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/*
 * Copyright 2021 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/printk.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include "kfd_priv.h"
#include "kfd_mqd_manager.h"
#include "v11_structs.h"
#include "gc/gc_11_0_0_offset.h"
#include "gc/gc_11_0_0_sh_mask.h"
#include "amdgpu_amdkfd.h"

static inline struct v11_compute_mqd *get_mqd(void *mqd)
{
	return (struct v11_compute_mqd *)mqd;
}

static inline struct v11_sdma_mqd *get_sdma_mqd(void *mqd)
{
	return (struct v11_sdma_mqd *)mqd;
}

static void update_cu_mask(struct mqd_manager *mm, void *mqd,
			   struct mqd_update_info *minfo)
{
	struct v11_compute_mqd *m;
	uint32_t se_mask[KFD_MAX_NUM_SE] = {0};
	bool has_wa_flag = minfo && (minfo->update_flag & (UPDATE_FLAG_DBG_WA_ENABLE |
			UPDATE_FLAG_DBG_WA_DISABLE));

	if (!minfo || !(has_wa_flag || minfo->cu_mask.ptr))
		return;

	m = get_mqd(mqd);

	if (has_wa_flag) {
		uint32_t wa_mask = minfo->update_flag == UPDATE_FLAG_DBG_WA_ENABLE ?
						0xffff : 0xffffffff;

		m->compute_static_thread_mgmt_se0 = wa_mask;
		m->compute_static_thread_mgmt_se1 = wa_mask;
		m->compute_static_thread_mgmt_se2 = wa_mask;
		m->compute_static_thread_mgmt_se3 = wa_mask;
		m->compute_static_thread_mgmt_se4 = wa_mask;
		m->compute_static_thread_mgmt_se5 = wa_mask;
		m->compute_static_thread_mgmt_se6 = wa_mask;
		m->compute_static_thread_mgmt_se7 = wa_mask;

		return;
	}

	mqd_symmetrically_map_cu_mask(mm,
		minfo->cu_mask.ptr, minfo->cu_mask.count, se_mask, 0);

	m->compute_static_thread_mgmt_se0 = se_mask[0];
	m->compute_static_thread_mgmt_se1 = se_mask[1];
	m->compute_static_thread_mgmt_se2 = se_mask[2];
	m->compute_static_thread_mgmt_se3 = se_mask[3];
	m->compute_static_thread_mgmt_se4 = se_mask[4];
	m->compute_static_thread_mgmt_se5 = se_mask[5];
	m->compute_static_thread_mgmt_se6 = se_mask[6];
	m->compute_static_thread_mgmt_se7 = se_mask[7];

	pr_debug("update cu mask to %#x %#x %#x %#x %#x %#x %#x %#x\n",
		m->compute_static_thread_mgmt_se0,
		m->compute_static_thread_mgmt_se1,
		m->compute_static_thread_mgmt_se2,
		m->compute_static_thread_mgmt_se3,
		m->compute_static_thread_mgmt_se4,
		m->compute_static_thread_mgmt_se5,
		m->compute_static_thread_mgmt_se6,
		m->compute_static_thread_mgmt_se7);
}

static void set_priority(struct v11_compute_mqd *m, struct queue_properties *q)
{
	m->cp_hqd_pipe_priority = pipe_priority_map[q->priority];
	m->cp_hqd_queue_priority = q->priority;
}

static struct kfd_mem_obj *allocate_mqd(struct kfd_node *node,
		struct queue_properties *q)
{
	struct kfd_mem_obj *mqd_mem_obj;
	int size;

	/*
	 * MES write to areas beyond MQD size. So allocate
	 * 1 PAGE_SIZE memory for MQD is MES is enabled.
	 */
	if (node->kfd->shared_resources.enable_mes)
		size = PAGE_SIZE;
	else
		size = sizeof(struct v11_compute_mqd);

	if (kfd_gtt_sa_allocate(node, size, &mqd_mem_obj))
		return NULL;

	return mqd_mem_obj;
}

static void init_mqd(struct mqd_manager *mm, void **mqd,
			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
			struct queue_properties *q)
{
	uint64_t addr;
	struct v11_compute_mqd *m;
	int size;
	uint32_t wa_mask = q->is_dbg_wa ? 0xffff : 0xffffffff;

	m = (struct v11_compute_mqd *) mqd_mem_obj->cpu_ptr;
	addr = mqd_mem_obj->gpu_addr;

	if (mm->dev->kfd->shared_resources.enable_mes)
		size = PAGE_SIZE;
	else
		size = sizeof(struct v11_compute_mqd);

	memset(m, 0, size);

	m->header = 0xC0310800;
	m->compute_pipelinestat_enable = 1;

	m->compute_static_thread_mgmt_se0 = wa_mask;
	m->compute_static_thread_mgmt_se1 = wa_mask;
	m->compute_static_thread_mgmt_se2 = wa_mask;
	m->compute_static_thread_mgmt_se3 = wa_mask;
	m->compute_static_thread_mgmt_se4 = wa_mask;
	m->compute_static_thread_mgmt_se5 = wa_mask;
	m->compute_static_thread_mgmt_se6 = wa_mask;
	m->compute_static_thread_mgmt_se7 = wa_mask;

	m->cp_hqd_persistent_state = CP_HQD_PERSISTENT_STATE__PRELOAD_REQ_MASK |
			0x55 << CP_HQD_PERSISTENT_STATE__PRELOAD_SIZE__SHIFT;

	m->cp_mqd_control = 1 << CP_MQD_CONTROL__PRIV_STATE__SHIFT;

	m->cp_mqd_base_addr_lo        = lower_32_bits(addr);
	m->cp_mqd_base_addr_hi        = upper_32_bits(addr);

	m->cp_hqd_quantum = 1 << CP_HQD_QUANTUM__QUANTUM_EN__SHIFT |
			1 << CP_HQD_QUANTUM__QUANTUM_SCALE__SHIFT |
			1 << CP_HQD_QUANTUM__QUANTUM_DURATION__SHIFT;

	/* Set cp_hqd_hq_scheduler0 bit 14 to 1 to have the CP set up the
	 * DISPATCH_PTR.  This is required for the kfd debugger
	 */
	m->cp_hqd_hq_status0 = 1 << 14;

	/*
	 * GFX11 RS64 CPFW version >= 509 supports PCIe atomics support
	 * acknowledgment.
	 */
	if (amdgpu_amdkfd_have_atomics_support(mm->dev->adev))
		m->cp_hqd_hq_status0 |= 1 << 29;

	if (q->format == KFD_QUEUE_FORMAT_AQL) {
		m->cp_hqd_aql_control =
			1 << CP_HQD_AQL_CONTROL__CONTROL0__SHIFT;
	}

	if (mm->dev->kfd->cwsr_enabled) {
		m->cp_hqd_persistent_state |=
			(1 << CP_HQD_PERSISTENT_STATE__QSWITCH_MODE__SHIFT);
		m->cp_hqd_ctx_save_base_addr_lo =
			lower_32_bits(q->ctx_save_restore_area_address);
		m->cp_hqd_ctx_save_base_addr_hi =
			upper_32_bits(q->ctx_save_restore_area_address);
		m->cp_hqd_ctx_save_size = q->ctx_save_restore_area_size;
		m->cp_hqd_cntl_stack_size = q->ctl_stack_size;
		m->cp_hqd_cntl_stack_offset = q->ctl_stack_size;
		m->cp_hqd_wg_state_offset = q->ctl_stack_size;
	}

	*mqd = m;
	if (gart_addr)
		*gart_addr = addr;
	mm->update_mqd(mm, m, q, NULL);
}

static int load_mqd(struct mqd_manager *mm, void *mqd,
			uint32_t pipe_id, uint32_t queue_id,
			struct queue_properties *p, struct mm_struct *mms)
{
	int r = 0;
	/* AQL write pointer counts in 64B packets, PM4/CP counts in dwords. */
	uint32_t wptr_shift = (p->format == KFD_QUEUE_FORMAT_AQL ? 4 : 0);

	r = mm->dev->kfd2kgd->hqd_load(mm->dev->adev, mqd, pipe_id, queue_id,
					  (uint32_t __user *)p->write_ptr,
					  wptr_shift, 0, mms, 0);
	return r;
}

static void update_mqd(struct mqd_manager *mm, void *mqd,
		       struct queue_properties *q,
		       struct mqd_update_info *minfo)
{
	struct v11_compute_mqd *m;

	m = get_mqd(mqd);

	m->cp_hqd_pq_control = 5 << CP_HQD_PQ_CONTROL__RPTR_BLOCK_SIZE__SHIFT;
	m->cp_hqd_pq_control |=
			ffs(q->queue_size / sizeof(unsigned int)) - 1 - 1;
	pr_debug("cp_hqd_pq_control 0x%x\n", m->cp_hqd_pq_control);

	m->cp_hqd_pq_base_lo = lower_32_bits((uint64_t)q->queue_address >> 8);
	m->cp_hqd_pq_base_hi = upper_32_bits((uint64_t)q->queue_address >> 8);

	m->cp_hqd_pq_rptr_report_addr_lo = lower_32_bits((uint64_t)q->read_ptr);
	m->cp_hqd_pq_rptr_report_addr_hi = upper_32_bits((uint64_t)q->read_ptr);
	m->cp_hqd_pq_wptr_poll_addr_lo = lower_32_bits((uint64_t)q->write_ptr);
	m->cp_hqd_pq_wptr_poll_addr_hi = upper_32_bits((uint64_t)q->write_ptr);

	m->cp_hqd_pq_doorbell_control =
		q->doorbell_off <<
			CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_OFFSET__SHIFT;
	pr_debug("cp_hqd_pq_doorbell_control 0x%x\n",
			m->cp_hqd_pq_doorbell_control);

	m->cp_hqd_ib_control = 3 << CP_HQD_IB_CONTROL__MIN_IB_AVAIL_SIZE__SHIFT;

	/*
	 * HW does not clamp this field correctly. Maximum EOP queue size
	 * is constrained by per-SE EOP done signal count, which is 8-bit.
	 * Limit is 0xFF EOP entries (= 0x7F8 dwords). CP will not submit
	 * more than (EOP entry count - 1) so a queue size of 0x800 dwords
	 * is safe, giving a maximum field value of 0xA.
	 */
	m->cp_hqd_eop_control = min(0xA,
		ffs(q->eop_ring_buffer_size / sizeof(unsigned int)) - 1 - 1);
	m->cp_hqd_eop_base_addr_lo =
			lower_32_bits(q->eop_ring_buffer_address >> 8);
	m->cp_hqd_eop_base_addr_hi =
			upper_32_bits(q->eop_ring_buffer_address >> 8);

	m->cp_hqd_iq_timer = 0;

	m->cp_hqd_vmid = q->vmid;

	if (q->format == KFD_QUEUE_FORMAT_AQL) {
		/* GC 10 removed WPP_CLAMP from PQ Control */
		m->cp_hqd_pq_control |= CP_HQD_PQ_CONTROL__NO_UPDATE_RPTR_MASK |
				2 << CP_HQD_PQ_CONTROL__SLOT_BASED_WPTR__SHIFT |
				1 << CP_HQD_PQ_CONTROL__QUEUE_FULL_EN__SHIFT ;
		m->cp_hqd_pq_doorbell_control |=
			1 << CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_BIF_DROP__SHIFT;
	}
	if (mm->dev->kfd->cwsr_enabled)
		m->cp_hqd_ctx_save_control = 0;

	update_cu_mask(mm, mqd, minfo);
	set_priority(m, q);

	q->is_active = QUEUE_IS_ACTIVE(*q);
}

static uint32_t read_doorbell_id(void *mqd)
{
	struct v11_compute_mqd *m = (struct v11_compute_mqd *)mqd;

	return m->queue_doorbell_id0;
}

static int get_wave_state(struct mqd_manager *mm, void *mqd,
			  struct queue_properties *q,
			  void __user *ctl_stack,
			  u32 *ctl_stack_used_size,
			  u32 *save_area_used_size)
{
	struct v11_compute_mqd *m;
	struct kfd_context_save_area_header header;

	m = get_mqd(mqd);

	/* Control stack is written backwards, while workgroup context data
	 * is written forwards. Both starts from m->cp_hqd_cntl_stack_size.
	 * Current position is at m->cp_hqd_cntl_stack_offset and
	 * m->cp_hqd_wg_state_offset, respectively.
	 */
	*ctl_stack_used_size = m->cp_hqd_cntl_stack_size -
		m->cp_hqd_cntl_stack_offset;
	*save_area_used_size = m->cp_hqd_wg_state_offset -
		m->cp_hqd_cntl_stack_size;

	/* Control stack is not copied to user mode for GFXv11 because
	 * it's part of the context save area that is already
	 * accessible to user mode
	 */
	header.wave_state.control_stack_size = *ctl_stack_used_size;
	header.wave_state.wave_state_size = *save_area_used_size;

	header.wave_state.wave_state_offset = m->cp_hqd_wg_state_offset;
	header.wave_state.control_stack_offset = m->cp_hqd_cntl_stack_offset;

	if (copy_to_user(ctl_stack, &header, sizeof(header.wave_state)))
		return -EFAULT;

	return 0;
}

static void checkpoint_mqd(struct mqd_manager *mm, void *mqd, void *mqd_dst, void *ctl_stack_dst)
{
	struct v11_compute_mqd *m;

	m = get_mqd(mqd);

	memcpy(mqd_dst, m, sizeof(struct v11_compute_mqd));
}

static void restore_mqd(struct mqd_manager *mm, void **mqd,
			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
			struct queue_properties *qp,
			const void *mqd_src,
			const void *ctl_stack_src, const u32 ctl_stack_size)
{
	uint64_t addr;
	struct v11_compute_mqd *m;

	m = (struct v11_compute_mqd *) mqd_mem_obj->cpu_ptr;
	addr = mqd_mem_obj->gpu_addr;

	memcpy(m, mqd_src, sizeof(*m));

	*mqd = m;
	if (gart_addr)
		*gart_addr = addr;

	m->cp_hqd_pq_doorbell_control =
		qp->doorbell_off <<
			CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_OFFSET__SHIFT;
	pr_debug("cp_hqd_pq_doorbell_control 0x%x\n",
			m->cp_hqd_pq_doorbell_control);

	qp->is_active = 0;
}


static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
			struct queue_properties *q)
{
	struct v11_compute_mqd *m;

	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);

	m = get_mqd(*mqd);

	m->cp_hqd_pq_control |= 1 << CP_HQD_PQ_CONTROL__PRIV_STATE__SHIFT |
			1 << CP_HQD_PQ_CONTROL__KMD_QUEUE__SHIFT;
}

static int destroy_hiq_mqd(struct mqd_manager *mm, void *mqd,
			enum kfd_preempt_type type, unsigned int timeout,
			uint32_t pipe_id, uint32_t queue_id)
{
	int err;
	struct v11_compute_mqd *m;
	u32 doorbell_off;

	m = get_mqd(mqd);

	doorbell_off = m->cp_hqd_pq_doorbell_control >>
			CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_OFFSET__SHIFT;

	err = amdgpu_amdkfd_unmap_hiq(mm->dev->adev, doorbell_off, 0);
	if (err)
		pr_debug("Destroy HIQ MQD failed: %d\n", err);

	return err;
}

static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
		struct queue_properties *q)
{
	struct v11_sdma_mqd *m;
	int size;

	m = (struct v11_sdma_mqd *) mqd_mem_obj->cpu_ptr;

	if (mm->dev->kfd->shared_resources.enable_mes)
		size = PAGE_SIZE;
	else
		size = sizeof(struct v11_sdma_mqd);

	memset(m, 0, size);
	*mqd = m;
	if (gart_addr)
		*gart_addr = mqd_mem_obj->gpu_addr;

	mm->update_mqd(mm, m, q, NULL);
}

#define SDMA_RLC_DUMMY_DEFAULT 0xf

static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
		struct queue_properties *q,
		struct mqd_update_info *minfo)
{
	struct v11_sdma_mqd *m;

	m = get_sdma_mqd(mqd);
	m->sdmax_rlcx_rb_cntl = (ffs(q->queue_size / sizeof(unsigned int)) - 1)
		<< SDMA0_QUEUE0_RB_CNTL__RB_SIZE__SHIFT |
		q->vmid << SDMA0_QUEUE0_RB_CNTL__RB_VMID__SHIFT |
		1 << SDMA0_QUEUE0_RB_CNTL__RPTR_WRITEBACK_ENABLE__SHIFT |
		6 << SDMA0_QUEUE0_RB_CNTL__RPTR_WRITEBACK_TIMER__SHIFT |
		1 << SDMA0_QUEUE0_RB_CNTL__F32_WPTR_POLL_ENABLE__SHIFT;

	m->sdmax_rlcx_rb_base = lower_32_bits(q->queue_address >> 8);
	m->sdmax_rlcx_rb_base_hi = upper_32_bits(q->queue_address >> 8);
	m->sdmax_rlcx_rb_rptr_addr_lo = lower_32_bits((uint64_t)q->read_ptr);
	m->sdmax_rlcx_rb_rptr_addr_hi = upper_32_bits((uint64_t)q->read_ptr);
	m->sdmax_rlcx_rb_wptr_poll_addr_lo = lower_32_bits((uint64_t)q->write_ptr);
	m->sdmax_rlcx_rb_wptr_poll_addr_hi = upper_32_bits((uint64_t)q->write_ptr);
	m->sdmax_rlcx_doorbell_offset =
		q->doorbell_off << SDMA0_QUEUE0_DOORBELL_OFFSET__OFFSET__SHIFT;

	m->sdmax_rlcx_sched_cntl = (amdgpu_sdma_phase_quantum
		<< SDMA0_QUEUE0_SCHEDULE_CNTL__CONTEXT_QUANTUM__SHIFT)
		 & SDMA0_QUEUE0_SCHEDULE_CNTL__CONTEXT_QUANTUM_MASK;

	m->sdma_engine_id = q->sdma_engine_id;
	m->sdma_queue_id = q->sdma_queue_id;
	m->sdmax_rlcx_dummy_reg = SDMA_RLC_DUMMY_DEFAULT;

	q->is_active = QUEUE_IS_ACTIVE(*q);
}

#if defined(CONFIG_DEBUG_FS)

static int debugfs_show_mqd(struct seq_file *m, void *data)
{
	seq_hex_dump(m, "    ", DUMP_PREFIX_OFFSET, 32, 4,
		     data, sizeof(struct v11_compute_mqd), false);
	return 0;
}

static int debugfs_show_mqd_sdma(struct seq_file *m, void *data)
{
	seq_hex_dump(m, "    ", DUMP_PREFIX_OFFSET, 32, 4,
		     data, sizeof(struct v11_sdma_mqd), false);
	return 0;
}

#endif

struct mqd_manager *mqd_manager_init_v11(enum KFD_MQD_TYPE type,
		struct kfd_node *dev)
{
	struct mqd_manager *mqd;

	if (WARN_ON(type >= KFD_MQD_TYPE_MAX))
		return NULL;

	mqd = kzalloc(sizeof(*mqd), GFP_KERNEL);
	if (!mqd)
		return NULL;

	mqd->dev = dev;

	switch (type) {
	case KFD_MQD_TYPE_CP:
		pr_debug("%s@%i\n", __func__, __LINE__);
		mqd->allocate_mqd = allocate_mqd;
		mqd->init_mqd = init_mqd;
		mqd->free_mqd = kfd_free_mqd_cp;
		mqd->load_mqd = load_mqd;
		mqd->update_mqd = update_mqd;
		mqd->destroy_mqd = kfd_destroy_mqd_cp;
		mqd->is_occupied = kfd_is_occupied_cp;
		mqd->mqd_size = sizeof(struct v11_compute_mqd);
		mqd->get_wave_state = get_wave_state;
		mqd->mqd_stride = kfd_mqd_stride;
		mqd->checkpoint_mqd = checkpoint_mqd;
		mqd->restore_mqd = restore_mqd;
#if defined(CONFIG_DEBUG_FS)
		mqd->debugfs_show_mqd = debugfs_show_mqd;
#endif
		pr_debug("%s@%i\n", __func__, __LINE__);
		break;
	case KFD_MQD_TYPE_HIQ:
		pr_debug("%s@%i\n", __func__, __LINE__);
		mqd->allocate_mqd = allocate_hiq_mqd;
		mqd->init_mqd = init_mqd_hiq;
		mqd->free_mqd = free_mqd_hiq_sdma;
		mqd->load_mqd = kfd_hiq_load_mqd_kiq;
		mqd->update_mqd = update_mqd;
		mqd->destroy_mqd = destroy_hiq_mqd;
		mqd->is_occupied = kfd_is_occupied_cp;
		mqd->mqd_size = sizeof(struct v11_compute_mqd);
		mqd->mqd_stride = kfd_mqd_stride;
#if defined(CONFIG_DEBUG_FS)
		mqd->debugfs_show_mqd = debugfs_show_mqd;
#endif
		mqd->read_doorbell_id = read_doorbell_id;
		pr_debug("%s@%i\n", __func__, __LINE__);
		break;
	case KFD_MQD_TYPE_DIQ:
		mqd->allocate_mqd = allocate_mqd;
		mqd->init_mqd = init_mqd_hiq;
		mqd->free_mqd = kfd_free_mqd_cp;
		mqd->load_mqd = load_mqd;
		mqd->update_mqd = update_mqd;
		mqd->destroy_mqd = kfd_destroy_mqd_cp;
		mqd->is_occupied = kfd_is_occupied_cp;
		mqd->mqd_size = sizeof(struct v11_compute_mqd);
#if defined(CONFIG_DEBUG_FS)
		mqd->debugfs_show_mqd = debugfs_show_mqd;
#endif
		break;
	case KFD_MQD_TYPE_SDMA:
		pr_debug("%s@%i\n", __func__, __LINE__);
		mqd->allocate_mqd = allocate_sdma_mqd;
		mqd->init_mqd = init_mqd_sdma;
		mqd->free_mqd = free_mqd_hiq_sdma;
		mqd->load_mqd = kfd_load_mqd_sdma;
		mqd->update_mqd = update_mqd_sdma;
		mqd->destroy_mqd = kfd_destroy_mqd_sdma;
		mqd->is_occupied = kfd_is_occupied_sdma;
		mqd->checkpoint_mqd = checkpoint_mqd;
		mqd->restore_mqd = restore_mqd;
		mqd->mqd_size = sizeof(struct v11_sdma_mqd);
		mqd->mqd_stride = kfd_mqd_stride;
#if defined(CONFIG_DEBUG_FS)
		mqd->debugfs_show_mqd = debugfs_show_mqd_sdma;
#endif
		/*
		 * To allocate SDMA MQDs by generic functions
		 * when MES is enabled.
		 */
		if (dev->kfd->shared_resources.enable_mes) {
			mqd->allocate_mqd = allocate_mqd;
			mqd->free_mqd = kfd_free_mqd_cp;
		}
		pr_debug("%s@%i\n", __func__, __LINE__);
		break;
	default:
		kfree(mqd);
		return NULL;
	}

	return mqd;
}