1 /*
2  * Copyright 2021 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  */
23 
24 #include <linux/printk.h>
25 #include <linux/slab.h>
26 #include <linux/uaccess.h>
27 #include "kfd_priv.h"
28 #include "kfd_mqd_manager.h"
29 #include "v11_structs.h"
30 #include "gc/gc_11_0_0_offset.h"
31 #include "gc/gc_11_0_0_sh_mask.h"
32 #include "amdgpu_amdkfd.h"
33 
34 static inline struct v11_compute_mqd *get_mqd(void *mqd)
35 {
36 	return (struct v11_compute_mqd *)mqd;
37 }
38 
39 static inline struct v11_sdma_mqd *get_sdma_mqd(void *mqd)
40 {
41 	return (struct v11_sdma_mqd *)mqd;
42 }
43 
44 static void update_cu_mask(struct mqd_manager *mm, void *mqd,
45 			   struct mqd_update_info *minfo)
46 {
47 	struct v11_compute_mqd *m;
48 	uint32_t se_mask[KFD_MAX_NUM_SE] = {0};
49 	bool has_wa_flag = minfo && (minfo->update_flag & (UPDATE_FLAG_DBG_WA_ENABLE |
50 			UPDATE_FLAG_DBG_WA_DISABLE));
51 
52 	if (!minfo || !(has_wa_flag || minfo->cu_mask.ptr))
53 		return;
54 
55 	m = get_mqd(mqd);
56 
57 	if (has_wa_flag) {
58 		uint32_t wa_mask = minfo->update_flag == UPDATE_FLAG_DBG_WA_ENABLE ?
59 						0xffff : 0xffffffff;
60 
61 		m->compute_static_thread_mgmt_se0 = wa_mask;
62 		m->compute_static_thread_mgmt_se1 = wa_mask;
63 		m->compute_static_thread_mgmt_se2 = wa_mask;
64 		m->compute_static_thread_mgmt_se3 = wa_mask;
65 		m->compute_static_thread_mgmt_se4 = wa_mask;
66 		m->compute_static_thread_mgmt_se5 = wa_mask;
67 		m->compute_static_thread_mgmt_se6 = wa_mask;
68 		m->compute_static_thread_mgmt_se7 = wa_mask;
69 
70 		return;
71 	}
72 
73 	mqd_symmetrically_map_cu_mask(mm,
74 		minfo->cu_mask.ptr, minfo->cu_mask.count, se_mask);
75 
76 	m->compute_static_thread_mgmt_se0 = se_mask[0];
77 	m->compute_static_thread_mgmt_se1 = se_mask[1];
78 	m->compute_static_thread_mgmt_se2 = se_mask[2];
79 	m->compute_static_thread_mgmt_se3 = se_mask[3];
80 	m->compute_static_thread_mgmt_se4 = se_mask[4];
81 	m->compute_static_thread_mgmt_se5 = se_mask[5];
82 	m->compute_static_thread_mgmt_se6 = se_mask[6];
83 	m->compute_static_thread_mgmt_se7 = se_mask[7];
84 
85 	pr_debug("update cu mask to %#x %#x %#x %#x %#x %#x %#x %#x\n",
86 		m->compute_static_thread_mgmt_se0,
87 		m->compute_static_thread_mgmt_se1,
88 		m->compute_static_thread_mgmt_se2,
89 		m->compute_static_thread_mgmt_se3,
90 		m->compute_static_thread_mgmt_se4,
91 		m->compute_static_thread_mgmt_se5,
92 		m->compute_static_thread_mgmt_se6,
93 		m->compute_static_thread_mgmt_se7);
94 }
95 
96 static void set_priority(struct v11_compute_mqd *m, struct queue_properties *q)
97 {
98 	m->cp_hqd_pipe_priority = pipe_priority_map[q->priority];
99 	m->cp_hqd_queue_priority = q->priority;
100 }
101 
102 static struct kfd_mem_obj *allocate_mqd(struct kfd_node *node,
103 		struct queue_properties *q)
104 {
105 	struct kfd_mem_obj *mqd_mem_obj;
106 	int size;
107 
108 	/*
109 	 * MES write to areas beyond MQD size. So allocate
110 	 * 1 PAGE_SIZE memory for MQD is MES is enabled.
111 	 */
112 	if (node->kfd->shared_resources.enable_mes)
113 		size = PAGE_SIZE;
114 	else
115 		size = sizeof(struct v11_compute_mqd);
116 
117 	if (kfd_gtt_sa_allocate(node, size, &mqd_mem_obj))
118 		return NULL;
119 
120 	return mqd_mem_obj;
121 }
122 
123 static void init_mqd(struct mqd_manager *mm, void **mqd,
124 			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
125 			struct queue_properties *q)
126 {
127 	uint64_t addr;
128 	struct v11_compute_mqd *m;
129 	int size;
130 	uint32_t wa_mask = q->is_dbg_wa ? 0xffff : 0xffffffff;
131 
132 	m = (struct v11_compute_mqd *) mqd_mem_obj->cpu_ptr;
133 	addr = mqd_mem_obj->gpu_addr;
134 
135 	if (mm->dev->kfd->shared_resources.enable_mes)
136 		size = PAGE_SIZE;
137 	else
138 		size = sizeof(struct v11_compute_mqd);
139 
140 	memset(m, 0, size);
141 
142 	m->header = 0xC0310800;
143 	m->compute_pipelinestat_enable = 1;
144 
145 	m->compute_static_thread_mgmt_se0 = wa_mask;
146 	m->compute_static_thread_mgmt_se1 = wa_mask;
147 	m->compute_static_thread_mgmt_se2 = wa_mask;
148 	m->compute_static_thread_mgmt_se3 = wa_mask;
149 	m->compute_static_thread_mgmt_se4 = wa_mask;
150 	m->compute_static_thread_mgmt_se5 = wa_mask;
151 	m->compute_static_thread_mgmt_se6 = wa_mask;
152 	m->compute_static_thread_mgmt_se7 = wa_mask;
153 
154 	m->cp_hqd_persistent_state = CP_HQD_PERSISTENT_STATE__PRELOAD_REQ_MASK |
155 			0x55 << CP_HQD_PERSISTENT_STATE__PRELOAD_SIZE__SHIFT;
156 
157 	m->cp_mqd_control = 1 << CP_MQD_CONTROL__PRIV_STATE__SHIFT;
158 
159 	m->cp_mqd_base_addr_lo        = lower_32_bits(addr);
160 	m->cp_mqd_base_addr_hi        = upper_32_bits(addr);
161 
162 	m->cp_hqd_quantum = 1 << CP_HQD_QUANTUM__QUANTUM_EN__SHIFT |
163 			1 << CP_HQD_QUANTUM__QUANTUM_SCALE__SHIFT |
164 			1 << CP_HQD_QUANTUM__QUANTUM_DURATION__SHIFT;
165 
166 	/* Set cp_hqd_hq_scheduler0 bit 14 to 1 to have the CP set up the
167 	 * DISPATCH_PTR.  This is required for the kfd debugger
168 	 */
169 	m->cp_hqd_hq_status0 = 1 << 14;
170 
171 	/*
172 	 * GFX11 RS64 CPFW version >= 509 supports PCIe atomics support
173 	 * acknowledgment.
174 	 */
175 	if (amdgpu_amdkfd_have_atomics_support(mm->dev->adev))
176 		m->cp_hqd_hq_status0 |= 1 << 29;
177 
178 	if (q->format == KFD_QUEUE_FORMAT_AQL) {
179 		m->cp_hqd_aql_control =
180 			1 << CP_HQD_AQL_CONTROL__CONTROL0__SHIFT;
181 	}
182 
183 	if (mm->dev->kfd->cwsr_enabled) {
184 		m->cp_hqd_persistent_state |=
185 			(1 << CP_HQD_PERSISTENT_STATE__QSWITCH_MODE__SHIFT);
186 		m->cp_hqd_ctx_save_base_addr_lo =
187 			lower_32_bits(q->ctx_save_restore_area_address);
188 		m->cp_hqd_ctx_save_base_addr_hi =
189 			upper_32_bits(q->ctx_save_restore_area_address);
190 		m->cp_hqd_ctx_save_size = q->ctx_save_restore_area_size;
191 		m->cp_hqd_cntl_stack_size = q->ctl_stack_size;
192 		m->cp_hqd_cntl_stack_offset = q->ctl_stack_size;
193 		m->cp_hqd_wg_state_offset = q->ctl_stack_size;
194 	}
195 
196 	*mqd = m;
197 	if (gart_addr)
198 		*gart_addr = addr;
199 	mm->update_mqd(mm, m, q, NULL);
200 }
201 
202 static int load_mqd(struct mqd_manager *mm, void *mqd,
203 			uint32_t pipe_id, uint32_t queue_id,
204 			struct queue_properties *p, struct mm_struct *mms)
205 {
206 	int r = 0;
207 	/* AQL write pointer counts in 64B packets, PM4/CP counts in dwords. */
208 	uint32_t wptr_shift = (p->format == KFD_QUEUE_FORMAT_AQL ? 4 : 0);
209 
210 	r = mm->dev->kfd2kgd->hqd_load(mm->dev->adev, mqd, pipe_id, queue_id,
211 					  (uint32_t __user *)p->write_ptr,
212 					  wptr_shift, 0, mms, 0);
213 	return r;
214 }
215 
216 static void update_mqd(struct mqd_manager *mm, void *mqd,
217 		       struct queue_properties *q,
218 		       struct mqd_update_info *minfo)
219 {
220 	struct v11_compute_mqd *m;
221 
222 	m = get_mqd(mqd);
223 
224 	m->cp_hqd_pq_control = 5 << CP_HQD_PQ_CONTROL__RPTR_BLOCK_SIZE__SHIFT;
225 	m->cp_hqd_pq_control |=
226 			ffs(q->queue_size / sizeof(unsigned int)) - 1 - 1;
227 	pr_debug("cp_hqd_pq_control 0x%x\n", m->cp_hqd_pq_control);
228 
229 	m->cp_hqd_pq_base_lo = lower_32_bits((uint64_t)q->queue_address >> 8);
230 	m->cp_hqd_pq_base_hi = upper_32_bits((uint64_t)q->queue_address >> 8);
231 
232 	m->cp_hqd_pq_rptr_report_addr_lo = lower_32_bits((uint64_t)q->read_ptr);
233 	m->cp_hqd_pq_rptr_report_addr_hi = upper_32_bits((uint64_t)q->read_ptr);
234 	m->cp_hqd_pq_wptr_poll_addr_lo = lower_32_bits((uint64_t)q->write_ptr);
235 	m->cp_hqd_pq_wptr_poll_addr_hi = upper_32_bits((uint64_t)q->write_ptr);
236 
237 	m->cp_hqd_pq_doorbell_control =
238 		q->doorbell_off <<
239 			CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_OFFSET__SHIFT;
240 	pr_debug("cp_hqd_pq_doorbell_control 0x%x\n",
241 			m->cp_hqd_pq_doorbell_control);
242 
243 	m->cp_hqd_ib_control = 3 << CP_HQD_IB_CONTROL__MIN_IB_AVAIL_SIZE__SHIFT;
244 
245 	/*
246 	 * HW does not clamp this field correctly. Maximum EOP queue size
247 	 * is constrained by per-SE EOP done signal count, which is 8-bit.
248 	 * Limit is 0xFF EOP entries (= 0x7F8 dwords). CP will not submit
249 	 * more than (EOP entry count - 1) so a queue size of 0x800 dwords
250 	 * is safe, giving a maximum field value of 0xA.
251 	 */
252 	m->cp_hqd_eop_control = min(0xA,
253 		ffs(q->eop_ring_buffer_size / sizeof(unsigned int)) - 1 - 1);
254 	m->cp_hqd_eop_base_addr_lo =
255 			lower_32_bits(q->eop_ring_buffer_address >> 8);
256 	m->cp_hqd_eop_base_addr_hi =
257 			upper_32_bits(q->eop_ring_buffer_address >> 8);
258 
259 	m->cp_hqd_iq_timer = 0;
260 
261 	m->cp_hqd_vmid = q->vmid;
262 
263 	if (q->format == KFD_QUEUE_FORMAT_AQL) {
264 		/* GC 10 removed WPP_CLAMP from PQ Control */
265 		m->cp_hqd_pq_control |= CP_HQD_PQ_CONTROL__NO_UPDATE_RPTR_MASK |
266 				2 << CP_HQD_PQ_CONTROL__SLOT_BASED_WPTR__SHIFT |
267 				1 << CP_HQD_PQ_CONTROL__QUEUE_FULL_EN__SHIFT ;
268 		m->cp_hqd_pq_doorbell_control |=
269 			1 << CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_BIF_DROP__SHIFT;
270 	}
271 	if (mm->dev->kfd->cwsr_enabled)
272 		m->cp_hqd_ctx_save_control = 0;
273 
274 	update_cu_mask(mm, mqd, minfo);
275 	set_priority(m, q);
276 
277 	q->is_active = QUEUE_IS_ACTIVE(*q);
278 }
279 
280 static uint32_t read_doorbell_id(void *mqd)
281 {
282 	struct v11_compute_mqd *m = (struct v11_compute_mqd *)mqd;
283 
284 	return m->queue_doorbell_id0;
285 }
286 
287 static int get_wave_state(struct mqd_manager *mm, void *mqd,
288 			  struct queue_properties *q,
289 			  void __user *ctl_stack,
290 			  u32 *ctl_stack_used_size,
291 			  u32 *save_area_used_size)
292 {
293 	struct v11_compute_mqd *m;
294 	struct kfd_context_save_area_header header;
295 
296 	m = get_mqd(mqd);
297 
298 	/* Control stack is written backwards, while workgroup context data
299 	 * is written forwards. Both starts from m->cp_hqd_cntl_stack_size.
300 	 * Current position is at m->cp_hqd_cntl_stack_offset and
301 	 * m->cp_hqd_wg_state_offset, respectively.
302 	 */
303 	*ctl_stack_used_size = m->cp_hqd_cntl_stack_size -
304 		m->cp_hqd_cntl_stack_offset;
305 	*save_area_used_size = m->cp_hqd_wg_state_offset -
306 		m->cp_hqd_cntl_stack_size;
307 
308 	/* Control stack is not copied to user mode for GFXv11 because
309 	 * it's part of the context save area that is already
310 	 * accessible to user mode
311 	 */
312 	header.wave_state.control_stack_size = *ctl_stack_used_size;
313 	header.wave_state.wave_state_size = *save_area_used_size;
314 
315 	header.wave_state.wave_state_offset = m->cp_hqd_wg_state_offset;
316 	header.wave_state.control_stack_offset = m->cp_hqd_cntl_stack_offset;
317 
318 	if (copy_to_user(ctl_stack, &header, sizeof(header.wave_state)))
319 		return -EFAULT;
320 
321 	return 0;
322 }
323 
324 static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
325 			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
326 			struct queue_properties *q)
327 {
328 	struct v11_compute_mqd *m;
329 
330 	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
331 
332 	m = get_mqd(*mqd);
333 
334 	m->cp_hqd_pq_control |= 1 << CP_HQD_PQ_CONTROL__PRIV_STATE__SHIFT |
335 			1 << CP_HQD_PQ_CONTROL__KMD_QUEUE__SHIFT;
336 }
337 
338 static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
339 		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
340 		struct queue_properties *q)
341 {
342 	struct v11_sdma_mqd *m;
343 	int size;
344 
345 	m = (struct v11_sdma_mqd *) mqd_mem_obj->cpu_ptr;
346 
347 	if (mm->dev->kfd->shared_resources.enable_mes)
348 		size = PAGE_SIZE;
349 	else
350 		size = sizeof(struct v11_sdma_mqd);
351 
352 	memset(m, 0, size);
353 	*mqd = m;
354 	if (gart_addr)
355 		*gart_addr = mqd_mem_obj->gpu_addr;
356 
357 	mm->update_mqd(mm, m, q, NULL);
358 }
359 
360 #define SDMA_RLC_DUMMY_DEFAULT 0xf
361 
362 static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
363 		struct queue_properties *q,
364 		struct mqd_update_info *minfo)
365 {
366 	struct v11_sdma_mqd *m;
367 
368 	m = get_sdma_mqd(mqd);
369 	m->sdmax_rlcx_rb_cntl = (ffs(q->queue_size / sizeof(unsigned int)) - 1)
370 		<< SDMA0_QUEUE0_RB_CNTL__RB_SIZE__SHIFT |
371 		q->vmid << SDMA0_QUEUE0_RB_CNTL__RB_VMID__SHIFT |
372 		1 << SDMA0_QUEUE0_RB_CNTL__RPTR_WRITEBACK_ENABLE__SHIFT |
373 		6 << SDMA0_QUEUE0_RB_CNTL__RPTR_WRITEBACK_TIMER__SHIFT |
374 		1 << SDMA0_QUEUE0_RB_CNTL__F32_WPTR_POLL_ENABLE__SHIFT;
375 
376 	m->sdmax_rlcx_rb_base = lower_32_bits(q->queue_address >> 8);
377 	m->sdmax_rlcx_rb_base_hi = upper_32_bits(q->queue_address >> 8);
378 	m->sdmax_rlcx_rb_rptr_addr_lo = lower_32_bits((uint64_t)q->read_ptr);
379 	m->sdmax_rlcx_rb_rptr_addr_hi = upper_32_bits((uint64_t)q->read_ptr);
380 	m->sdmax_rlcx_rb_wptr_poll_addr_lo = lower_32_bits((uint64_t)q->write_ptr);
381 	m->sdmax_rlcx_rb_wptr_poll_addr_hi = upper_32_bits((uint64_t)q->write_ptr);
382 	m->sdmax_rlcx_doorbell_offset =
383 		q->doorbell_off << SDMA0_QUEUE0_DOORBELL_OFFSET__OFFSET__SHIFT;
384 
385 	m->sdmax_rlcx_sched_cntl = (amdgpu_sdma_phase_quantum
386 		<< SDMA0_QUEUE0_SCHEDULE_CNTL__CONTEXT_QUANTUM__SHIFT)
387 		 & SDMA0_QUEUE0_SCHEDULE_CNTL__CONTEXT_QUANTUM_MASK;
388 
389 	m->sdma_engine_id = q->sdma_engine_id;
390 	m->sdma_queue_id = q->sdma_queue_id;
391 	m->sdmax_rlcx_dummy_reg = SDMA_RLC_DUMMY_DEFAULT;
392 
393 	q->is_active = QUEUE_IS_ACTIVE(*q);
394 }
395 
396 #if defined(CONFIG_DEBUG_FS)
397 
398 static int debugfs_show_mqd(struct seq_file *m, void *data)
399 {
400 	seq_hex_dump(m, "    ", DUMP_PREFIX_OFFSET, 32, 4,
401 		     data, sizeof(struct v11_compute_mqd), false);
402 	return 0;
403 }
404 
405 static int debugfs_show_mqd_sdma(struct seq_file *m, void *data)
406 {
407 	seq_hex_dump(m, "    ", DUMP_PREFIX_OFFSET, 32, 4,
408 		     data, sizeof(struct v11_sdma_mqd), false);
409 	return 0;
410 }
411 
412 #endif
413 
414 struct mqd_manager *mqd_manager_init_v11(enum KFD_MQD_TYPE type,
415 		struct kfd_node *dev)
416 {
417 	struct mqd_manager *mqd;
418 
419 	if (WARN_ON(type >= KFD_MQD_TYPE_MAX))
420 		return NULL;
421 
422 	mqd = kzalloc(sizeof(*mqd), GFP_KERNEL);
423 	if (!mqd)
424 		return NULL;
425 
426 	mqd->dev = dev;
427 
428 	switch (type) {
429 	case KFD_MQD_TYPE_CP:
430 		pr_debug("%s@%i\n", __func__, __LINE__);
431 		mqd->allocate_mqd = allocate_mqd;
432 		mqd->init_mqd = init_mqd;
433 		mqd->free_mqd = kfd_free_mqd_cp;
434 		mqd->load_mqd = load_mqd;
435 		mqd->update_mqd = update_mqd;
436 		mqd->destroy_mqd = kfd_destroy_mqd_cp;
437 		mqd->is_occupied = kfd_is_occupied_cp;
438 		mqd->mqd_size = sizeof(struct v11_compute_mqd);
439 		mqd->get_wave_state = get_wave_state;
440 #if defined(CONFIG_DEBUG_FS)
441 		mqd->debugfs_show_mqd = debugfs_show_mqd;
442 #endif
443 		pr_debug("%s@%i\n", __func__, __LINE__);
444 		break;
445 	case KFD_MQD_TYPE_HIQ:
446 		pr_debug("%s@%i\n", __func__, __LINE__);
447 		mqd->allocate_mqd = allocate_hiq_mqd;
448 		mqd->init_mqd = init_mqd_hiq;
449 		mqd->free_mqd = free_mqd_hiq_sdma;
450 		mqd->load_mqd = kfd_hiq_load_mqd_kiq;
451 		mqd->update_mqd = update_mqd;
452 		mqd->destroy_mqd = kfd_destroy_mqd_cp;
453 		mqd->is_occupied = kfd_is_occupied_cp;
454 		mqd->mqd_size = sizeof(struct v11_compute_mqd);
455 #if defined(CONFIG_DEBUG_FS)
456 		mqd->debugfs_show_mqd = debugfs_show_mqd;
457 #endif
458 		mqd->read_doorbell_id = read_doorbell_id;
459 		pr_debug("%s@%i\n", __func__, __LINE__);
460 		break;
461 	case KFD_MQD_TYPE_DIQ:
462 		mqd->allocate_mqd = allocate_mqd;
463 		mqd->init_mqd = init_mqd_hiq;
464 		mqd->free_mqd = kfd_free_mqd_cp;
465 		mqd->load_mqd = load_mqd;
466 		mqd->update_mqd = update_mqd;
467 		mqd->destroy_mqd = kfd_destroy_mqd_cp;
468 		mqd->is_occupied = kfd_is_occupied_cp;
469 		mqd->mqd_size = sizeof(struct v11_compute_mqd);
470 #if defined(CONFIG_DEBUG_FS)
471 		mqd->debugfs_show_mqd = debugfs_show_mqd;
472 #endif
473 		break;
474 	case KFD_MQD_TYPE_SDMA:
475 		pr_debug("%s@%i\n", __func__, __LINE__);
476 		mqd->allocate_mqd = allocate_sdma_mqd;
477 		mqd->init_mqd = init_mqd_sdma;
478 		mqd->free_mqd = free_mqd_hiq_sdma;
479 		mqd->load_mqd = kfd_load_mqd_sdma;
480 		mqd->update_mqd = update_mqd_sdma;
481 		mqd->destroy_mqd = kfd_destroy_mqd_sdma;
482 		mqd->is_occupied = kfd_is_occupied_sdma;
483 		mqd->mqd_size = sizeof(struct v11_sdma_mqd);
484 #if defined(CONFIG_DEBUG_FS)
485 		mqd->debugfs_show_mqd = debugfs_show_mqd_sdma;
486 #endif
487 		/*
488 		 * To allocate SDMA MQDs by generic functions
489 		 * when MES is enabled.
490 		 */
491 		if (dev->kfd->shared_resources.enable_mes) {
492 			mqd->allocate_mqd = allocate_mqd;
493 			mqd->free_mqd = kfd_free_mqd_cp;
494 		}
495 		pr_debug("%s@%i\n", __func__, __LINE__);
496 		break;
497 	default:
498 		kfree(mqd);
499 		return NULL;
500 	}
501 
502 	return mqd;
503 }
504