1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /*
3 * Copyright 2014-2022 Advanced Micro Devices, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 */
24
25 #include <linux/ratelimit.h>
26 #include <linux/printk.h>
27 #include <linux/slab.h>
28 #include <linux/list.h>
29 #include <linux/types.h>
30 #include <linux/bitops.h>
31 #include <linux/sched.h>
32 #include "kfd_priv.h"
33 #include "kfd_device_queue_manager.h"
34 #include "kfd_mqd_manager.h"
35 #include "cik_regs.h"
36 #include "kfd_kernel_queue.h"
37 #include "amdgpu_amdkfd.h"
38 #include "mes_api_def.h"
39 #include "kfd_debug.h"
40
41 /* Size of the per-pipe EOP queue */
42 #define CIK_HPD_EOP_BYTES_LOG2 11
43 #define CIK_HPD_EOP_BYTES (1U << CIK_HPD_EOP_BYTES_LOG2)
44
45 static int set_pasid_vmid_mapping(struct device_queue_manager *dqm,
46 u32 pasid, unsigned int vmid);
47
48 static int execute_queues_cpsch(struct device_queue_manager *dqm,
49 enum kfd_unmap_queues_filter filter,
50 uint32_t filter_param,
51 uint32_t grace_period);
52 static int unmap_queues_cpsch(struct device_queue_manager *dqm,
53 enum kfd_unmap_queues_filter filter,
54 uint32_t filter_param,
55 uint32_t grace_period,
56 bool reset);
57
58 static int map_queues_cpsch(struct device_queue_manager *dqm);
59
60 static void deallocate_sdma_queue(struct device_queue_manager *dqm,
61 struct queue *q);
62
63 static inline void deallocate_hqd(struct device_queue_manager *dqm,
64 struct queue *q);
65 static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q);
66 static int allocate_sdma_queue(struct device_queue_manager *dqm,
67 struct queue *q, const uint32_t *restore_sdma_id);
68 static void kfd_process_hw_exception(struct work_struct *work);
69
70 static inline
get_mqd_type_from_queue_type(enum kfd_queue_type type)71 enum KFD_MQD_TYPE get_mqd_type_from_queue_type(enum kfd_queue_type type)
72 {
73 if (type == KFD_QUEUE_TYPE_SDMA || type == KFD_QUEUE_TYPE_SDMA_XGMI)
74 return KFD_MQD_TYPE_SDMA;
75 return KFD_MQD_TYPE_CP;
76 }
77
is_pipe_enabled(struct device_queue_manager * dqm,int mec,int pipe)78 static bool is_pipe_enabled(struct device_queue_manager *dqm, int mec, int pipe)
79 {
80 int i;
81 int pipe_offset = (mec * dqm->dev->kfd->shared_resources.num_pipe_per_mec
82 + pipe) * dqm->dev->kfd->shared_resources.num_queue_per_pipe;
83
84 /* queue is available for KFD usage if bit is 1 */
85 for (i = 0; i < dqm->dev->kfd->shared_resources.num_queue_per_pipe; ++i)
86 if (test_bit(pipe_offset + i,
87 dqm->dev->kfd->shared_resources.cp_queue_bitmap))
88 return true;
89 return false;
90 }
91
get_cp_queues_num(struct device_queue_manager * dqm)92 unsigned int get_cp_queues_num(struct device_queue_manager *dqm)
93 {
94 return bitmap_weight(dqm->dev->kfd->shared_resources.cp_queue_bitmap,
95 KGD_MAX_QUEUES);
96 }
97
get_queues_per_pipe(struct device_queue_manager * dqm)98 unsigned int get_queues_per_pipe(struct device_queue_manager *dqm)
99 {
100 return dqm->dev->kfd->shared_resources.num_queue_per_pipe;
101 }
102
get_pipes_per_mec(struct device_queue_manager * dqm)103 unsigned int get_pipes_per_mec(struct device_queue_manager *dqm)
104 {
105 return dqm->dev->kfd->shared_resources.num_pipe_per_mec;
106 }
107
get_num_all_sdma_engines(struct device_queue_manager * dqm)108 static unsigned int get_num_all_sdma_engines(struct device_queue_manager *dqm)
109 {
110 return kfd_get_num_sdma_engines(dqm->dev) +
111 kfd_get_num_xgmi_sdma_engines(dqm->dev);
112 }
113
get_num_sdma_queues(struct device_queue_manager * dqm)114 unsigned int get_num_sdma_queues(struct device_queue_manager *dqm)
115 {
116 return kfd_get_num_sdma_engines(dqm->dev) *
117 dqm->dev->kfd->device_info.num_sdma_queues_per_engine;
118 }
119
get_num_xgmi_sdma_queues(struct device_queue_manager * dqm)120 unsigned int get_num_xgmi_sdma_queues(struct device_queue_manager *dqm)
121 {
122 return kfd_get_num_xgmi_sdma_engines(dqm->dev) *
123 dqm->dev->kfd->device_info.num_sdma_queues_per_engine;
124 }
125
init_sdma_bitmaps(struct device_queue_manager * dqm)126 static void init_sdma_bitmaps(struct device_queue_manager *dqm)
127 {
128 bitmap_zero(dqm->sdma_bitmap, KFD_MAX_SDMA_QUEUES);
129 bitmap_set(dqm->sdma_bitmap, 0, get_num_sdma_queues(dqm));
130
131 bitmap_zero(dqm->xgmi_sdma_bitmap, KFD_MAX_SDMA_QUEUES);
132 bitmap_set(dqm->xgmi_sdma_bitmap, 0, get_num_xgmi_sdma_queues(dqm));
133
134 /* Mask out the reserved queues */
135 bitmap_andnot(dqm->sdma_bitmap, dqm->sdma_bitmap,
136 dqm->dev->kfd->device_info.reserved_sdma_queues_bitmap,
137 KFD_MAX_SDMA_QUEUES);
138 }
139
program_sh_mem_settings(struct device_queue_manager * dqm,struct qcm_process_device * qpd)140 void program_sh_mem_settings(struct device_queue_manager *dqm,
141 struct qcm_process_device *qpd)
142 {
143 uint32_t xcc_mask = dqm->dev->xcc_mask;
144 int xcc_id;
145
146 for_each_inst(xcc_id, xcc_mask)
147 dqm->dev->kfd2kgd->program_sh_mem_settings(
148 dqm->dev->adev, qpd->vmid, qpd->sh_mem_config,
149 qpd->sh_mem_ape1_base, qpd->sh_mem_ape1_limit,
150 qpd->sh_mem_bases, xcc_id);
151 }
152
kfd_hws_hang(struct device_queue_manager * dqm)153 static void kfd_hws_hang(struct device_queue_manager *dqm)
154 {
155 /*
156 * Issue a GPU reset if HWS is unresponsive
157 */
158 dqm->is_hws_hang = true;
159
160 /* It's possible we're detecting a HWS hang in the
161 * middle of a GPU reset. No need to schedule another
162 * reset in this case.
163 */
164 if (!dqm->is_resetting)
165 schedule_work(&dqm->hw_exception_work);
166 }
167
convert_to_mes_queue_type(int queue_type)168 static int convert_to_mes_queue_type(int queue_type)
169 {
170 int mes_queue_type;
171
172 switch (queue_type) {
173 case KFD_QUEUE_TYPE_COMPUTE:
174 mes_queue_type = MES_QUEUE_TYPE_COMPUTE;
175 break;
176 case KFD_QUEUE_TYPE_SDMA:
177 mes_queue_type = MES_QUEUE_TYPE_SDMA;
178 break;
179 default:
180 WARN(1, "Invalid queue type %d", queue_type);
181 mes_queue_type = -EINVAL;
182 break;
183 }
184
185 return mes_queue_type;
186 }
187
add_queue_mes(struct device_queue_manager * dqm,struct queue * q,struct qcm_process_device * qpd)188 static int add_queue_mes(struct device_queue_manager *dqm, struct queue *q,
189 struct qcm_process_device *qpd)
190 {
191 struct amdgpu_device *adev = (struct amdgpu_device *)dqm->dev->adev;
192 struct kfd_process_device *pdd = qpd_to_pdd(qpd);
193 struct mes_add_queue_input queue_input;
194 int r, queue_type;
195 uint64_t wptr_addr_off;
196
197 if (dqm->is_hws_hang)
198 return -EIO;
199
200 memset(&queue_input, 0x0, sizeof(struct mes_add_queue_input));
201 queue_input.process_id = qpd->pqm->process->pasid;
202 queue_input.page_table_base_addr = qpd->page_table_base;
203 queue_input.process_va_start = 0;
204 queue_input.process_va_end = adev->vm_manager.max_pfn - 1;
205 /* MES unit for quantum is 100ns */
206 queue_input.process_quantum = KFD_MES_PROCESS_QUANTUM; /* Equivalent to 10ms. */
207 queue_input.process_context_addr = pdd->proc_ctx_gpu_addr;
208 queue_input.gang_quantum = KFD_MES_GANG_QUANTUM; /* Equivalent to 1ms */
209 queue_input.gang_context_addr = q->gang_ctx_gpu_addr;
210 queue_input.inprocess_gang_priority = q->properties.priority;
211 queue_input.gang_global_priority_level =
212 AMDGPU_MES_PRIORITY_LEVEL_NORMAL;
213 queue_input.doorbell_offset = q->properties.doorbell_off;
214 queue_input.mqd_addr = q->gart_mqd_addr;
215 queue_input.wptr_addr = (uint64_t)q->properties.write_ptr;
216
217 if (q->wptr_bo) {
218 wptr_addr_off = (uint64_t)q->properties.write_ptr & (PAGE_SIZE - 1);
219 queue_input.wptr_mc_addr = amdgpu_bo_gpu_offset(q->wptr_bo) + wptr_addr_off;
220 }
221
222 queue_input.is_kfd_process = 1;
223 queue_input.is_aql_queue = (q->properties.format == KFD_QUEUE_FORMAT_AQL);
224 queue_input.queue_size = q->properties.queue_size >> 2;
225
226 queue_input.paging = false;
227 queue_input.tba_addr = qpd->tba_addr;
228 queue_input.tma_addr = qpd->tma_addr;
229 queue_input.trap_en = !kfd_dbg_has_cwsr_workaround(q->device);
230 queue_input.skip_process_ctx_clear = qpd->pqm->process->debug_trap_enabled ||
231 kfd_dbg_has_ttmps_always_setup(q->device);
232
233 queue_type = convert_to_mes_queue_type(q->properties.type);
234 if (queue_type < 0) {
235 pr_err("Queue type not supported with MES, queue:%d\n",
236 q->properties.type);
237 return -EINVAL;
238 }
239 queue_input.queue_type = (uint32_t)queue_type;
240
241 queue_input.exclusively_scheduled = q->properties.is_gws;
242
243 amdgpu_mes_lock(&adev->mes);
244 r = adev->mes.funcs->add_hw_queue(&adev->mes, &queue_input);
245 amdgpu_mes_unlock(&adev->mes);
246 if (r) {
247 pr_err("failed to add hardware queue to MES, doorbell=0x%x\n",
248 q->properties.doorbell_off);
249 pr_err("MES might be in unrecoverable state, issue a GPU reset\n");
250 kfd_hws_hang(dqm);
251 }
252
253 return r;
254 }
255
remove_queue_mes(struct device_queue_manager * dqm,struct queue * q,struct qcm_process_device * qpd)256 static int remove_queue_mes(struct device_queue_manager *dqm, struct queue *q,
257 struct qcm_process_device *qpd)
258 {
259 struct amdgpu_device *adev = (struct amdgpu_device *)dqm->dev->adev;
260 int r;
261 struct mes_remove_queue_input queue_input;
262
263 if (dqm->is_hws_hang)
264 return -EIO;
265
266 memset(&queue_input, 0x0, sizeof(struct mes_remove_queue_input));
267 queue_input.doorbell_offset = q->properties.doorbell_off;
268 queue_input.gang_context_addr = q->gang_ctx_gpu_addr;
269
270 amdgpu_mes_lock(&adev->mes);
271 r = adev->mes.funcs->remove_hw_queue(&adev->mes, &queue_input);
272 amdgpu_mes_unlock(&adev->mes);
273
274 if (r) {
275 pr_err("failed to remove hardware queue from MES, doorbell=0x%x\n",
276 q->properties.doorbell_off);
277 pr_err("MES might be in unrecoverable state, issue a GPU reset\n");
278 kfd_hws_hang(dqm);
279 }
280
281 return r;
282 }
283
remove_all_queues_mes(struct device_queue_manager * dqm)284 static int remove_all_queues_mes(struct device_queue_manager *dqm)
285 {
286 struct device_process_node *cur;
287 struct qcm_process_device *qpd;
288 struct queue *q;
289 int retval = 0;
290
291 list_for_each_entry(cur, &dqm->queues, list) {
292 qpd = cur->qpd;
293 list_for_each_entry(q, &qpd->queues_list, list) {
294 if (q->properties.is_active) {
295 retval = remove_queue_mes(dqm, q, qpd);
296 if (retval) {
297 pr_err("%s: Failed to remove queue %d for dev %d",
298 __func__,
299 q->properties.queue_id,
300 dqm->dev->id);
301 return retval;
302 }
303 }
304 }
305 }
306
307 return retval;
308 }
309
increment_queue_count(struct device_queue_manager * dqm,struct qcm_process_device * qpd,struct queue * q)310 static void increment_queue_count(struct device_queue_manager *dqm,
311 struct qcm_process_device *qpd,
312 struct queue *q)
313 {
314 dqm->active_queue_count++;
315 if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
316 q->properties.type == KFD_QUEUE_TYPE_DIQ)
317 dqm->active_cp_queue_count++;
318
319 if (q->properties.is_gws) {
320 dqm->gws_queue_count++;
321 qpd->mapped_gws_queue = true;
322 }
323 }
324
decrement_queue_count(struct device_queue_manager * dqm,struct qcm_process_device * qpd,struct queue * q)325 static void decrement_queue_count(struct device_queue_manager *dqm,
326 struct qcm_process_device *qpd,
327 struct queue *q)
328 {
329 dqm->active_queue_count--;
330 if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
331 q->properties.type == KFD_QUEUE_TYPE_DIQ)
332 dqm->active_cp_queue_count--;
333
334 if (q->properties.is_gws) {
335 dqm->gws_queue_count--;
336 qpd->mapped_gws_queue = false;
337 }
338 }
339
340 /*
341 * Allocate a doorbell ID to this queue.
342 * If doorbell_id is passed in, make sure requested ID is valid then allocate it.
343 */
allocate_doorbell(struct qcm_process_device * qpd,struct queue * q,uint32_t const * restore_id)344 static int allocate_doorbell(struct qcm_process_device *qpd,
345 struct queue *q,
346 uint32_t const *restore_id)
347 {
348 struct kfd_node *dev = qpd->dqm->dev;
349
350 if (!KFD_IS_SOC15(dev)) {
351 /* On pre-SOC15 chips we need to use the queue ID to
352 * preserve the user mode ABI.
353 */
354
355 if (restore_id && *restore_id != q->properties.queue_id)
356 return -EINVAL;
357
358 q->doorbell_id = q->properties.queue_id;
359 } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
360 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
361 /* For SDMA queues on SOC15 with 8-byte doorbell, use static
362 * doorbell assignments based on the engine and queue id.
363 * The doobell index distance between RLC (2*i) and (2*i+1)
364 * for a SDMA engine is 512.
365 */
366
367 uint32_t *idx_offset = dev->kfd->shared_resources.sdma_doorbell_idx;
368
369 /*
370 * q->properties.sdma_engine_id corresponds to the virtual
371 * sdma engine number. However, for doorbell allocation,
372 * we need the physical sdma engine id in order to get the
373 * correct doorbell offset.
374 */
375 uint32_t valid_id = idx_offset[qpd->dqm->dev->node_id *
376 get_num_all_sdma_engines(qpd->dqm) +
377 q->properties.sdma_engine_id]
378 + (q->properties.sdma_queue_id & 1)
379 * KFD_QUEUE_DOORBELL_MIRROR_OFFSET
380 + (q->properties.sdma_queue_id >> 1);
381
382 if (restore_id && *restore_id != valid_id)
383 return -EINVAL;
384 q->doorbell_id = valid_id;
385 } else {
386 /* For CP queues on SOC15 */
387 if (restore_id) {
388 /* make sure that ID is free */
389 if (__test_and_set_bit(*restore_id, qpd->doorbell_bitmap))
390 return -EINVAL;
391
392 q->doorbell_id = *restore_id;
393 } else {
394 /* or reserve a free doorbell ID */
395 unsigned int found;
396
397 found = find_first_zero_bit(qpd->doorbell_bitmap,
398 KFD_MAX_NUM_OF_QUEUES_PER_PROCESS);
399 if (found >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) {
400 pr_debug("No doorbells available");
401 return -EBUSY;
402 }
403 set_bit(found, qpd->doorbell_bitmap);
404 q->doorbell_id = found;
405 }
406 }
407
408 q->properties.doorbell_off = amdgpu_doorbell_index_on_bar(dev->adev,
409 qpd->proc_doorbells,
410 q->doorbell_id,
411 dev->kfd->device_info.doorbell_size);
412 return 0;
413 }
414
deallocate_doorbell(struct qcm_process_device * qpd,struct queue * q)415 static void deallocate_doorbell(struct qcm_process_device *qpd,
416 struct queue *q)
417 {
418 unsigned int old;
419 struct kfd_node *dev = qpd->dqm->dev;
420
421 if (!KFD_IS_SOC15(dev) ||
422 q->properties.type == KFD_QUEUE_TYPE_SDMA ||
423 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
424 return;
425
426 old = test_and_clear_bit(q->doorbell_id, qpd->doorbell_bitmap);
427 WARN_ON(!old);
428 }
429
program_trap_handler_settings(struct device_queue_manager * dqm,struct qcm_process_device * qpd)430 static void program_trap_handler_settings(struct device_queue_manager *dqm,
431 struct qcm_process_device *qpd)
432 {
433 uint32_t xcc_mask = dqm->dev->xcc_mask;
434 int xcc_id;
435
436 if (dqm->dev->kfd2kgd->program_trap_handler_settings)
437 for_each_inst(xcc_id, xcc_mask)
438 dqm->dev->kfd2kgd->program_trap_handler_settings(
439 dqm->dev->adev, qpd->vmid, qpd->tba_addr,
440 qpd->tma_addr, xcc_id);
441 }
442
allocate_vmid(struct device_queue_manager * dqm,struct qcm_process_device * qpd,struct queue * q)443 static int allocate_vmid(struct device_queue_manager *dqm,
444 struct qcm_process_device *qpd,
445 struct queue *q)
446 {
447 int allocated_vmid = -1, i;
448
449 for (i = dqm->dev->vm_info.first_vmid_kfd;
450 i <= dqm->dev->vm_info.last_vmid_kfd; i++) {
451 if (!dqm->vmid_pasid[i]) {
452 allocated_vmid = i;
453 break;
454 }
455 }
456
457 if (allocated_vmid < 0) {
458 pr_err("no more vmid to allocate\n");
459 return -ENOSPC;
460 }
461
462 pr_debug("vmid allocated: %d\n", allocated_vmid);
463
464 dqm->vmid_pasid[allocated_vmid] = q->process->pasid;
465
466 set_pasid_vmid_mapping(dqm, q->process->pasid, allocated_vmid);
467
468 qpd->vmid = allocated_vmid;
469 q->properties.vmid = allocated_vmid;
470
471 program_sh_mem_settings(dqm, qpd);
472
473 if (KFD_IS_SOC15(dqm->dev) && dqm->dev->kfd->cwsr_enabled)
474 program_trap_handler_settings(dqm, qpd);
475
476 /* qpd->page_table_base is set earlier when register_process()
477 * is called, i.e. when the first queue is created.
478 */
479 dqm->dev->kfd2kgd->set_vm_context_page_table_base(dqm->dev->adev,
480 qpd->vmid,
481 qpd->page_table_base);
482 /* invalidate the VM context after pasid and vmid mapping is set up */
483 kfd_flush_tlb(qpd_to_pdd(qpd), TLB_FLUSH_LEGACY);
484
485 if (dqm->dev->kfd2kgd->set_scratch_backing_va)
486 dqm->dev->kfd2kgd->set_scratch_backing_va(dqm->dev->adev,
487 qpd->sh_hidden_private_base, qpd->vmid);
488
489 return 0;
490 }
491
flush_texture_cache_nocpsch(struct kfd_node * kdev,struct qcm_process_device * qpd)492 static int flush_texture_cache_nocpsch(struct kfd_node *kdev,
493 struct qcm_process_device *qpd)
494 {
495 const struct packet_manager_funcs *pmf = qpd->dqm->packet_mgr.pmf;
496 int ret;
497
498 if (!qpd->ib_kaddr)
499 return -ENOMEM;
500
501 ret = pmf->release_mem(qpd->ib_base, (uint32_t *)qpd->ib_kaddr);
502 if (ret)
503 return ret;
504
505 return amdgpu_amdkfd_submit_ib(kdev->adev, KGD_ENGINE_MEC1, qpd->vmid,
506 qpd->ib_base, (uint32_t *)qpd->ib_kaddr,
507 pmf->release_mem_size / sizeof(uint32_t));
508 }
509
deallocate_vmid(struct device_queue_manager * dqm,struct qcm_process_device * qpd,struct queue * q)510 static void deallocate_vmid(struct device_queue_manager *dqm,
511 struct qcm_process_device *qpd,
512 struct queue *q)
513 {
514 /* On GFX v7, CP doesn't flush TC at dequeue */
515 if (q->device->adev->asic_type == CHIP_HAWAII)
516 if (flush_texture_cache_nocpsch(q->device, qpd))
517 pr_err("Failed to flush TC\n");
518
519 kfd_flush_tlb(qpd_to_pdd(qpd), TLB_FLUSH_LEGACY);
520
521 /* Release the vmid mapping */
522 set_pasid_vmid_mapping(dqm, 0, qpd->vmid);
523 dqm->vmid_pasid[qpd->vmid] = 0;
524
525 qpd->vmid = 0;
526 q->properties.vmid = 0;
527 }
528
create_queue_nocpsch(struct device_queue_manager * dqm,struct queue * q,struct qcm_process_device * qpd,const struct kfd_criu_queue_priv_data * qd,const void * restore_mqd,const void * restore_ctl_stack)529 static int create_queue_nocpsch(struct device_queue_manager *dqm,
530 struct queue *q,
531 struct qcm_process_device *qpd,
532 const struct kfd_criu_queue_priv_data *qd,
533 const void *restore_mqd, const void *restore_ctl_stack)
534 {
535 struct mqd_manager *mqd_mgr;
536 int retval;
537
538 dqm_lock(dqm);
539
540 if (dqm->total_queue_count >= max_num_of_queues_per_device) {
541 pr_warn("Can't create new usermode queue because %d queues were already created\n",
542 dqm->total_queue_count);
543 retval = -EPERM;
544 goto out_unlock;
545 }
546
547 if (list_empty(&qpd->queues_list)) {
548 retval = allocate_vmid(dqm, qpd, q);
549 if (retval)
550 goto out_unlock;
551 }
552 q->properties.vmid = qpd->vmid;
553 /*
554 * Eviction state logic: mark all queues as evicted, even ones
555 * not currently active. Restoring inactive queues later only
556 * updates the is_evicted flag but is a no-op otherwise.
557 */
558 q->properties.is_evicted = !!qpd->evicted;
559
560 q->properties.tba_addr = qpd->tba_addr;
561 q->properties.tma_addr = qpd->tma_addr;
562
563 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
564 q->properties.type)];
565 if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE) {
566 retval = allocate_hqd(dqm, q);
567 if (retval)
568 goto deallocate_vmid;
569 pr_debug("Loading mqd to hqd on pipe %d, queue %d\n",
570 q->pipe, q->queue);
571 } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
572 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
573 retval = allocate_sdma_queue(dqm, q, qd ? &qd->sdma_id : NULL);
574 if (retval)
575 goto deallocate_vmid;
576 dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
577 }
578
579 retval = allocate_doorbell(qpd, q, qd ? &qd->doorbell_id : NULL);
580 if (retval)
581 goto out_deallocate_hqd;
582
583 /* Temporarily release dqm lock to avoid a circular lock dependency */
584 dqm_unlock(dqm);
585 q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
586 dqm_lock(dqm);
587
588 if (!q->mqd_mem_obj) {
589 retval = -ENOMEM;
590 goto out_deallocate_doorbell;
591 }
592
593 if (qd)
594 mqd_mgr->restore_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, &q->gart_mqd_addr,
595 &q->properties, restore_mqd, restore_ctl_stack,
596 qd->ctl_stack_size);
597 else
598 mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
599 &q->gart_mqd_addr, &q->properties);
600
601 if (q->properties.is_active) {
602 if (!dqm->sched_running) {
603 WARN_ONCE(1, "Load non-HWS mqd while stopped\n");
604 goto add_queue_to_list;
605 }
606
607 if (WARN(q->process->mm != current->mm,
608 "should only run in user thread"))
609 retval = -EFAULT;
610 else
611 retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
612 q->queue, &q->properties, current->mm);
613 if (retval)
614 goto out_free_mqd;
615 }
616
617 add_queue_to_list:
618 list_add(&q->list, &qpd->queues_list);
619 qpd->queue_count++;
620 if (q->properties.is_active)
621 increment_queue_count(dqm, qpd, q);
622
623 /*
624 * Unconditionally increment this counter, regardless of the queue's
625 * type or whether the queue is active.
626 */
627 dqm->total_queue_count++;
628 pr_debug("Total of %d queues are accountable so far\n",
629 dqm->total_queue_count);
630 goto out_unlock;
631
632 out_free_mqd:
633 mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
634 out_deallocate_doorbell:
635 deallocate_doorbell(qpd, q);
636 out_deallocate_hqd:
637 if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE)
638 deallocate_hqd(dqm, q);
639 else if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
640 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
641 deallocate_sdma_queue(dqm, q);
642 deallocate_vmid:
643 if (list_empty(&qpd->queues_list))
644 deallocate_vmid(dqm, qpd, q);
645 out_unlock:
646 dqm_unlock(dqm);
647 return retval;
648 }
649
allocate_hqd(struct device_queue_manager * dqm,struct queue * q)650 static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q)
651 {
652 bool set;
653 int pipe, bit, i;
654
655 set = false;
656
657 for (pipe = dqm->next_pipe_to_allocate, i = 0;
658 i < get_pipes_per_mec(dqm);
659 pipe = ((pipe + 1) % get_pipes_per_mec(dqm)), ++i) {
660
661 if (!is_pipe_enabled(dqm, 0, pipe))
662 continue;
663
664 if (dqm->allocated_queues[pipe] != 0) {
665 bit = ffs(dqm->allocated_queues[pipe]) - 1;
666 dqm->allocated_queues[pipe] &= ~(1 << bit);
667 q->pipe = pipe;
668 q->queue = bit;
669 set = true;
670 break;
671 }
672 }
673
674 if (!set)
675 return -EBUSY;
676
677 pr_debug("hqd slot - pipe %d, queue %d\n", q->pipe, q->queue);
678 /* horizontal hqd allocation */
679 dqm->next_pipe_to_allocate = (pipe + 1) % get_pipes_per_mec(dqm);
680
681 return 0;
682 }
683
deallocate_hqd(struct device_queue_manager * dqm,struct queue * q)684 static inline void deallocate_hqd(struct device_queue_manager *dqm,
685 struct queue *q)
686 {
687 dqm->allocated_queues[q->pipe] |= (1 << q->queue);
688 }
689
690 #define SQ_IND_CMD_CMD_KILL 0x00000003
691 #define SQ_IND_CMD_MODE_BROADCAST 0x00000001
692
dbgdev_wave_reset_wavefronts(struct kfd_node * dev,struct kfd_process * p)693 static int dbgdev_wave_reset_wavefronts(struct kfd_node *dev, struct kfd_process *p)
694 {
695 int status = 0;
696 unsigned int vmid;
697 uint16_t queried_pasid;
698 union SQ_CMD_BITS reg_sq_cmd;
699 union GRBM_GFX_INDEX_BITS reg_gfx_index;
700 struct kfd_process_device *pdd;
701 int first_vmid_to_scan = dev->vm_info.first_vmid_kfd;
702 int last_vmid_to_scan = dev->vm_info.last_vmid_kfd;
703 uint32_t xcc_mask = dev->xcc_mask;
704 int xcc_id;
705
706 reg_sq_cmd.u32All = 0;
707 reg_gfx_index.u32All = 0;
708
709 pr_debug("Killing all process wavefronts\n");
710
711 if (!dev->kfd2kgd->get_atc_vmid_pasid_mapping_info) {
712 pr_err("no vmid pasid mapping supported \n");
713 return -EOPNOTSUPP;
714 }
715
716 /* Scan all registers in the range ATC_VMID8_PASID_MAPPING ..
717 * ATC_VMID15_PASID_MAPPING
718 * to check which VMID the current process is mapped to.
719 */
720
721 for (vmid = first_vmid_to_scan; vmid <= last_vmid_to_scan; vmid++) {
722 status = dev->kfd2kgd->get_atc_vmid_pasid_mapping_info
723 (dev->adev, vmid, &queried_pasid);
724
725 if (status && queried_pasid == p->pasid) {
726 pr_debug("Killing wave fronts of vmid %d and pasid 0x%x\n",
727 vmid, p->pasid);
728 break;
729 }
730 }
731
732 if (vmid > last_vmid_to_scan) {
733 pr_err("Didn't find vmid for pasid 0x%x\n", p->pasid);
734 return -EFAULT;
735 }
736
737 /* taking the VMID for that process on the safe way using PDD */
738 pdd = kfd_get_process_device_data(dev, p);
739 if (!pdd)
740 return -EFAULT;
741
742 reg_gfx_index.bits.sh_broadcast_writes = 1;
743 reg_gfx_index.bits.se_broadcast_writes = 1;
744 reg_gfx_index.bits.instance_broadcast_writes = 1;
745 reg_sq_cmd.bits.mode = SQ_IND_CMD_MODE_BROADCAST;
746 reg_sq_cmd.bits.cmd = SQ_IND_CMD_CMD_KILL;
747 reg_sq_cmd.bits.vm_id = vmid;
748
749 for_each_inst(xcc_id, xcc_mask)
750 dev->kfd2kgd->wave_control_execute(
751 dev->adev, reg_gfx_index.u32All,
752 reg_sq_cmd.u32All, xcc_id);
753
754 return 0;
755 }
756
757 /* Access to DQM has to be locked before calling destroy_queue_nocpsch_locked
758 * to avoid asynchronized access
759 */
destroy_queue_nocpsch_locked(struct device_queue_manager * dqm,struct qcm_process_device * qpd,struct queue * q)760 static int destroy_queue_nocpsch_locked(struct device_queue_manager *dqm,
761 struct qcm_process_device *qpd,
762 struct queue *q)
763 {
764 int retval;
765 struct mqd_manager *mqd_mgr;
766
767 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
768 q->properties.type)];
769
770 if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE)
771 deallocate_hqd(dqm, q);
772 else if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
773 deallocate_sdma_queue(dqm, q);
774 else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
775 deallocate_sdma_queue(dqm, q);
776 else {
777 pr_debug("q->properties.type %d is invalid\n",
778 q->properties.type);
779 return -EINVAL;
780 }
781 dqm->total_queue_count--;
782
783 deallocate_doorbell(qpd, q);
784
785 if (!dqm->sched_running) {
786 WARN_ONCE(1, "Destroy non-HWS queue while stopped\n");
787 return 0;
788 }
789
790 retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd,
791 KFD_PREEMPT_TYPE_WAVEFRONT_RESET,
792 KFD_UNMAP_LATENCY_MS,
793 q->pipe, q->queue);
794 if (retval == -ETIME)
795 qpd->reset_wavefronts = true;
796
797 list_del(&q->list);
798 if (list_empty(&qpd->queues_list)) {
799 if (qpd->reset_wavefronts) {
800 pr_warn("Resetting wave fronts (nocpsch) on dev %p\n",
801 dqm->dev);
802 /* dbgdev_wave_reset_wavefronts has to be called before
803 * deallocate_vmid(), i.e. when vmid is still in use.
804 */
805 dbgdev_wave_reset_wavefronts(dqm->dev,
806 qpd->pqm->process);
807 qpd->reset_wavefronts = false;
808 }
809
810 deallocate_vmid(dqm, qpd, q);
811 }
812 qpd->queue_count--;
813 if (q->properties.is_active)
814 decrement_queue_count(dqm, qpd, q);
815
816 return retval;
817 }
818
destroy_queue_nocpsch(struct device_queue_manager * dqm,struct qcm_process_device * qpd,struct queue * q)819 static int destroy_queue_nocpsch(struct device_queue_manager *dqm,
820 struct qcm_process_device *qpd,
821 struct queue *q)
822 {
823 int retval;
824 uint64_t sdma_val = 0;
825 struct kfd_process_device *pdd = qpd_to_pdd(qpd);
826 struct mqd_manager *mqd_mgr =
827 dqm->mqd_mgrs[get_mqd_type_from_queue_type(q->properties.type)];
828
829 /* Get the SDMA queue stats */
830 if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) ||
831 (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
832 retval = read_sdma_queue_counter((uint64_t __user *)q->properties.read_ptr,
833 &sdma_val);
834 if (retval)
835 pr_err("Failed to read SDMA queue counter for queue: %d\n",
836 q->properties.queue_id);
837 }
838
839 dqm_lock(dqm);
840 retval = destroy_queue_nocpsch_locked(dqm, qpd, q);
841 if (!retval)
842 pdd->sdma_past_activity_counter += sdma_val;
843 dqm_unlock(dqm);
844
845 mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
846
847 return retval;
848 }
849
update_queue(struct device_queue_manager * dqm,struct queue * q,struct mqd_update_info * minfo)850 static int update_queue(struct device_queue_manager *dqm, struct queue *q,
851 struct mqd_update_info *minfo)
852 {
853 int retval = 0;
854 struct mqd_manager *mqd_mgr;
855 struct kfd_process_device *pdd;
856 bool prev_active = false;
857
858 dqm_lock(dqm);
859 pdd = kfd_get_process_device_data(q->device, q->process);
860 if (!pdd) {
861 retval = -ENODEV;
862 goto out_unlock;
863 }
864 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
865 q->properties.type)];
866
867 /* Save previous activity state for counters */
868 prev_active = q->properties.is_active;
869
870 /* Make sure the queue is unmapped before updating the MQD */
871 if (dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) {
872 if (!dqm->dev->kfd->shared_resources.enable_mes)
873 retval = unmap_queues_cpsch(dqm,
874 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD, false);
875 else if (prev_active)
876 retval = remove_queue_mes(dqm, q, &pdd->qpd);
877
878 if (retval) {
879 pr_err("unmap queue failed\n");
880 goto out_unlock;
881 }
882 } else if (prev_active &&
883 (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
884 q->properties.type == KFD_QUEUE_TYPE_SDMA ||
885 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
886
887 if (!dqm->sched_running) {
888 WARN_ONCE(1, "Update non-HWS queue while stopped\n");
889 goto out_unlock;
890 }
891
892 retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd,
893 (dqm->dev->kfd->cwsr_enabled ?
894 KFD_PREEMPT_TYPE_WAVEFRONT_SAVE :
895 KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN),
896 KFD_UNMAP_LATENCY_MS, q->pipe, q->queue);
897 if (retval) {
898 pr_err("destroy mqd failed\n");
899 goto out_unlock;
900 }
901 }
902
903 mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties, minfo);
904
905 /*
906 * check active state vs. the previous state and modify
907 * counter accordingly. map_queues_cpsch uses the
908 * dqm->active_queue_count to determine whether a new runlist must be
909 * uploaded.
910 */
911 if (q->properties.is_active && !prev_active) {
912 increment_queue_count(dqm, &pdd->qpd, q);
913 } else if (!q->properties.is_active && prev_active) {
914 decrement_queue_count(dqm, &pdd->qpd, q);
915 } else if (q->gws && !q->properties.is_gws) {
916 if (q->properties.is_active) {
917 dqm->gws_queue_count++;
918 pdd->qpd.mapped_gws_queue = true;
919 }
920 q->properties.is_gws = true;
921 } else if (!q->gws && q->properties.is_gws) {
922 if (q->properties.is_active) {
923 dqm->gws_queue_count--;
924 pdd->qpd.mapped_gws_queue = false;
925 }
926 q->properties.is_gws = false;
927 }
928
929 if (dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) {
930 if (!dqm->dev->kfd->shared_resources.enable_mes)
931 retval = map_queues_cpsch(dqm);
932 else if (q->properties.is_active)
933 retval = add_queue_mes(dqm, q, &pdd->qpd);
934 } else if (q->properties.is_active &&
935 (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
936 q->properties.type == KFD_QUEUE_TYPE_SDMA ||
937 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
938 if (WARN(q->process->mm != current->mm,
939 "should only run in user thread"))
940 retval = -EFAULT;
941 else
942 retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd,
943 q->pipe, q->queue,
944 &q->properties, current->mm);
945 }
946
947 out_unlock:
948 dqm_unlock(dqm);
949 return retval;
950 }
951
952 /* suspend_single_queue does not lock the dqm like the
953 * evict_process_queues_cpsch or evict_process_queues_nocpsch. You should
954 * lock the dqm before calling, and unlock after calling.
955 *
956 * The reason we don't lock the dqm is because this function may be
957 * called on multiple queues in a loop, so rather than locking/unlocking
958 * multiple times, we will just keep the dqm locked for all of the calls.
959 */
suspend_single_queue(struct device_queue_manager * dqm,struct kfd_process_device * pdd,struct queue * q)960 static int suspend_single_queue(struct device_queue_manager *dqm,
961 struct kfd_process_device *pdd,
962 struct queue *q)
963 {
964 bool is_new;
965
966 if (q->properties.is_suspended)
967 return 0;
968
969 pr_debug("Suspending PASID %u queue [%i]\n",
970 pdd->process->pasid,
971 q->properties.queue_id);
972
973 is_new = q->properties.exception_status & KFD_EC_MASK(EC_QUEUE_NEW);
974
975 if (is_new || q->properties.is_being_destroyed) {
976 pr_debug("Suspend: skip %s queue id %i\n",
977 is_new ? "new" : "destroyed",
978 q->properties.queue_id);
979 return -EBUSY;
980 }
981
982 q->properties.is_suspended = true;
983 if (q->properties.is_active) {
984 if (dqm->dev->kfd->shared_resources.enable_mes) {
985 int r = remove_queue_mes(dqm, q, &pdd->qpd);
986
987 if (r)
988 return r;
989 }
990
991 decrement_queue_count(dqm, &pdd->qpd, q);
992 q->properties.is_active = false;
993 }
994
995 return 0;
996 }
997
998 /* resume_single_queue does not lock the dqm like the functions
999 * restore_process_queues_cpsch or restore_process_queues_nocpsch. You should
1000 * lock the dqm before calling, and unlock after calling.
1001 *
1002 * The reason we don't lock the dqm is because this function may be
1003 * called on multiple queues in a loop, so rather than locking/unlocking
1004 * multiple times, we will just keep the dqm locked for all of the calls.
1005 */
resume_single_queue(struct device_queue_manager * dqm,struct qcm_process_device * qpd,struct queue * q)1006 static int resume_single_queue(struct device_queue_manager *dqm,
1007 struct qcm_process_device *qpd,
1008 struct queue *q)
1009 {
1010 struct kfd_process_device *pdd;
1011
1012 if (!q->properties.is_suspended)
1013 return 0;
1014
1015 pdd = qpd_to_pdd(qpd);
1016
1017 pr_debug("Restoring from suspend PASID %u queue [%i]\n",
1018 pdd->process->pasid,
1019 q->properties.queue_id);
1020
1021 q->properties.is_suspended = false;
1022
1023 if (QUEUE_IS_ACTIVE(q->properties)) {
1024 if (dqm->dev->kfd->shared_resources.enable_mes) {
1025 int r = add_queue_mes(dqm, q, &pdd->qpd);
1026
1027 if (r)
1028 return r;
1029 }
1030
1031 q->properties.is_active = true;
1032 increment_queue_count(dqm, qpd, q);
1033 }
1034
1035 return 0;
1036 }
1037
evict_process_queues_nocpsch(struct device_queue_manager * dqm,struct qcm_process_device * qpd)1038 static int evict_process_queues_nocpsch(struct device_queue_manager *dqm,
1039 struct qcm_process_device *qpd)
1040 {
1041 struct queue *q;
1042 struct mqd_manager *mqd_mgr;
1043 struct kfd_process_device *pdd;
1044 int retval, ret = 0;
1045
1046 dqm_lock(dqm);
1047 if (qpd->evicted++ > 0) /* already evicted, do nothing */
1048 goto out;
1049
1050 pdd = qpd_to_pdd(qpd);
1051 pr_debug_ratelimited("Evicting PASID 0x%x queues\n",
1052 pdd->process->pasid);
1053
1054 pdd->last_evict_timestamp = get_jiffies_64();
1055 /* Mark all queues as evicted. Deactivate all active queues on
1056 * the qpd.
1057 */
1058 list_for_each_entry(q, &qpd->queues_list, list) {
1059 q->properties.is_evicted = true;
1060 if (!q->properties.is_active)
1061 continue;
1062
1063 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
1064 q->properties.type)];
1065 q->properties.is_active = false;
1066 decrement_queue_count(dqm, qpd, q);
1067
1068 if (WARN_ONCE(!dqm->sched_running, "Evict when stopped\n"))
1069 continue;
1070
1071 retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd,
1072 (dqm->dev->kfd->cwsr_enabled ?
1073 KFD_PREEMPT_TYPE_WAVEFRONT_SAVE :
1074 KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN),
1075 KFD_UNMAP_LATENCY_MS, q->pipe, q->queue);
1076 if (retval && !ret)
1077 /* Return the first error, but keep going to
1078 * maintain a consistent eviction state
1079 */
1080 ret = retval;
1081 }
1082
1083 out:
1084 dqm_unlock(dqm);
1085 return ret;
1086 }
1087
evict_process_queues_cpsch(struct device_queue_manager * dqm,struct qcm_process_device * qpd)1088 static int evict_process_queues_cpsch(struct device_queue_manager *dqm,
1089 struct qcm_process_device *qpd)
1090 {
1091 struct queue *q;
1092 struct kfd_process_device *pdd;
1093 int retval = 0;
1094
1095 dqm_lock(dqm);
1096 if (qpd->evicted++ > 0) /* already evicted, do nothing */
1097 goto out;
1098
1099 pdd = qpd_to_pdd(qpd);
1100
1101 /* The debugger creates processes that temporarily have not acquired
1102 * all VMs for all devices and has no VMs itself.
1103 * Skip queue eviction on process eviction.
1104 */
1105 if (!pdd->drm_priv)
1106 goto out;
1107
1108 pr_debug_ratelimited("Evicting PASID 0x%x queues\n",
1109 pdd->process->pasid);
1110
1111 /* Mark all queues as evicted. Deactivate all active queues on
1112 * the qpd.
1113 */
1114 list_for_each_entry(q, &qpd->queues_list, list) {
1115 q->properties.is_evicted = true;
1116 if (!q->properties.is_active)
1117 continue;
1118
1119 q->properties.is_active = false;
1120 decrement_queue_count(dqm, qpd, q);
1121
1122 if (dqm->dev->kfd->shared_resources.enable_mes) {
1123 retval = remove_queue_mes(dqm, q, qpd);
1124 if (retval) {
1125 pr_err("Failed to evict queue %d\n",
1126 q->properties.queue_id);
1127 goto out;
1128 }
1129 }
1130 }
1131 pdd->last_evict_timestamp = get_jiffies_64();
1132 if (!dqm->dev->kfd->shared_resources.enable_mes)
1133 retval = execute_queues_cpsch(dqm,
1134 qpd->is_debug ?
1135 KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES :
1136 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0,
1137 USE_DEFAULT_GRACE_PERIOD);
1138
1139 out:
1140 dqm_unlock(dqm);
1141 return retval;
1142 }
1143
restore_process_queues_nocpsch(struct device_queue_manager * dqm,struct qcm_process_device * qpd)1144 static int restore_process_queues_nocpsch(struct device_queue_manager *dqm,
1145 struct qcm_process_device *qpd)
1146 {
1147 struct mm_struct *mm = NULL;
1148 struct queue *q;
1149 struct mqd_manager *mqd_mgr;
1150 struct kfd_process_device *pdd;
1151 uint64_t pd_base;
1152 uint64_t eviction_duration;
1153 int retval, ret = 0;
1154
1155 pdd = qpd_to_pdd(qpd);
1156 /* Retrieve PD base */
1157 pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->drm_priv);
1158
1159 dqm_lock(dqm);
1160 if (WARN_ON_ONCE(!qpd->evicted)) /* already restored, do nothing */
1161 goto out;
1162 if (qpd->evicted > 1) { /* ref count still > 0, decrement & quit */
1163 qpd->evicted--;
1164 goto out;
1165 }
1166
1167 pr_debug_ratelimited("Restoring PASID 0x%x queues\n",
1168 pdd->process->pasid);
1169
1170 /* Update PD Base in QPD */
1171 qpd->page_table_base = pd_base;
1172 pr_debug("Updated PD address to 0x%llx\n", pd_base);
1173
1174 if (!list_empty(&qpd->queues_list)) {
1175 dqm->dev->kfd2kgd->set_vm_context_page_table_base(
1176 dqm->dev->adev,
1177 qpd->vmid,
1178 qpd->page_table_base);
1179 kfd_flush_tlb(pdd, TLB_FLUSH_LEGACY);
1180 }
1181
1182 /* Take a safe reference to the mm_struct, which may otherwise
1183 * disappear even while the kfd_process is still referenced.
1184 */
1185 mm = get_task_mm(pdd->process->lead_thread);
1186 if (!mm) {
1187 ret = -EFAULT;
1188 goto out;
1189 }
1190
1191 /* Remove the eviction flags. Activate queues that are not
1192 * inactive for other reasons.
1193 */
1194 list_for_each_entry(q, &qpd->queues_list, list) {
1195 q->properties.is_evicted = false;
1196 if (!QUEUE_IS_ACTIVE(q->properties))
1197 continue;
1198
1199 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
1200 q->properties.type)];
1201 q->properties.is_active = true;
1202 increment_queue_count(dqm, qpd, q);
1203
1204 if (WARN_ONCE(!dqm->sched_running, "Restore when stopped\n"))
1205 continue;
1206
1207 retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
1208 q->queue, &q->properties, mm);
1209 if (retval && !ret)
1210 /* Return the first error, but keep going to
1211 * maintain a consistent eviction state
1212 */
1213 ret = retval;
1214 }
1215 qpd->evicted = 0;
1216 eviction_duration = get_jiffies_64() - pdd->last_evict_timestamp;
1217 atomic64_add(eviction_duration, &pdd->evict_duration_counter);
1218 out:
1219 if (mm)
1220 mmput(mm);
1221 dqm_unlock(dqm);
1222 return ret;
1223 }
1224
restore_process_queues_cpsch(struct device_queue_manager * dqm,struct qcm_process_device * qpd)1225 static int restore_process_queues_cpsch(struct device_queue_manager *dqm,
1226 struct qcm_process_device *qpd)
1227 {
1228 struct queue *q;
1229 struct kfd_process_device *pdd;
1230 uint64_t eviction_duration;
1231 int retval = 0;
1232
1233 pdd = qpd_to_pdd(qpd);
1234
1235 dqm_lock(dqm);
1236 if (WARN_ON_ONCE(!qpd->evicted)) /* already restored, do nothing */
1237 goto out;
1238 if (qpd->evicted > 1) { /* ref count still > 0, decrement & quit */
1239 qpd->evicted--;
1240 goto out;
1241 }
1242
1243 /* The debugger creates processes that temporarily have not acquired
1244 * all VMs for all devices and has no VMs itself.
1245 * Skip queue restore on process restore.
1246 */
1247 if (!pdd->drm_priv)
1248 goto vm_not_acquired;
1249
1250 pr_debug_ratelimited("Restoring PASID 0x%x queues\n",
1251 pdd->process->pasid);
1252
1253 /* Update PD Base in QPD */
1254 qpd->page_table_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->drm_priv);
1255 pr_debug("Updated PD address to 0x%llx\n", qpd->page_table_base);
1256
1257 /* activate all active queues on the qpd */
1258 list_for_each_entry(q, &qpd->queues_list, list) {
1259 q->properties.is_evicted = false;
1260 if (!QUEUE_IS_ACTIVE(q->properties))
1261 continue;
1262
1263 q->properties.is_active = true;
1264 increment_queue_count(dqm, &pdd->qpd, q);
1265
1266 if (dqm->dev->kfd->shared_resources.enable_mes) {
1267 retval = add_queue_mes(dqm, q, qpd);
1268 if (retval) {
1269 pr_err("Failed to restore queue %d\n",
1270 q->properties.queue_id);
1271 goto out;
1272 }
1273 }
1274 }
1275 if (!dqm->dev->kfd->shared_resources.enable_mes)
1276 retval = execute_queues_cpsch(dqm,
1277 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD);
1278 eviction_duration = get_jiffies_64() - pdd->last_evict_timestamp;
1279 atomic64_add(eviction_duration, &pdd->evict_duration_counter);
1280 vm_not_acquired:
1281 qpd->evicted = 0;
1282 out:
1283 dqm_unlock(dqm);
1284 return retval;
1285 }
1286
register_process(struct device_queue_manager * dqm,struct qcm_process_device * qpd)1287 static int register_process(struct device_queue_manager *dqm,
1288 struct qcm_process_device *qpd)
1289 {
1290 struct device_process_node *n;
1291 struct kfd_process_device *pdd;
1292 uint64_t pd_base;
1293 int retval;
1294
1295 n = kzalloc(sizeof(*n), GFP_KERNEL);
1296 if (!n)
1297 return -ENOMEM;
1298
1299 n->qpd = qpd;
1300
1301 pdd = qpd_to_pdd(qpd);
1302 /* Retrieve PD base */
1303 pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->drm_priv);
1304
1305 dqm_lock(dqm);
1306 list_add(&n->list, &dqm->queues);
1307
1308 /* Update PD Base in QPD */
1309 qpd->page_table_base = pd_base;
1310 pr_debug("Updated PD address to 0x%llx\n", pd_base);
1311
1312 retval = dqm->asic_ops.update_qpd(dqm, qpd);
1313
1314 dqm->processes_count++;
1315
1316 dqm_unlock(dqm);
1317
1318 /* Outside the DQM lock because under the DQM lock we can't do
1319 * reclaim or take other locks that others hold while reclaiming.
1320 */
1321 kfd_inc_compute_active(dqm->dev);
1322
1323 return retval;
1324 }
1325
unregister_process(struct device_queue_manager * dqm,struct qcm_process_device * qpd)1326 static int unregister_process(struct device_queue_manager *dqm,
1327 struct qcm_process_device *qpd)
1328 {
1329 int retval;
1330 struct device_process_node *cur, *next;
1331
1332 pr_debug("qpd->queues_list is %s\n",
1333 list_empty(&qpd->queues_list) ? "empty" : "not empty");
1334
1335 retval = 0;
1336 dqm_lock(dqm);
1337
1338 list_for_each_entry_safe(cur, next, &dqm->queues, list) {
1339 if (qpd == cur->qpd) {
1340 list_del(&cur->list);
1341 kfree(cur);
1342 dqm->processes_count--;
1343 goto out;
1344 }
1345 }
1346 /* qpd not found in dqm list */
1347 retval = 1;
1348 out:
1349 dqm_unlock(dqm);
1350
1351 /* Outside the DQM lock because under the DQM lock we can't do
1352 * reclaim or take other locks that others hold while reclaiming.
1353 */
1354 if (!retval)
1355 kfd_dec_compute_active(dqm->dev);
1356
1357 return retval;
1358 }
1359
1360 static int
set_pasid_vmid_mapping(struct device_queue_manager * dqm,u32 pasid,unsigned int vmid)1361 set_pasid_vmid_mapping(struct device_queue_manager *dqm, u32 pasid,
1362 unsigned int vmid)
1363 {
1364 uint32_t xcc_mask = dqm->dev->xcc_mask;
1365 int xcc_id, ret;
1366
1367 for_each_inst(xcc_id, xcc_mask) {
1368 ret = dqm->dev->kfd2kgd->set_pasid_vmid_mapping(
1369 dqm->dev->adev, pasid, vmid, xcc_id);
1370 if (ret)
1371 break;
1372 }
1373
1374 return ret;
1375 }
1376
init_interrupts(struct device_queue_manager * dqm)1377 static void init_interrupts(struct device_queue_manager *dqm)
1378 {
1379 uint32_t xcc_mask = dqm->dev->xcc_mask;
1380 unsigned int i, xcc_id;
1381
1382 for_each_inst(xcc_id, xcc_mask) {
1383 for (i = 0 ; i < get_pipes_per_mec(dqm) ; i++) {
1384 if (is_pipe_enabled(dqm, 0, i)) {
1385 dqm->dev->kfd2kgd->init_interrupts(
1386 dqm->dev->adev, i, xcc_id);
1387 }
1388 }
1389 }
1390 }
1391
initialize_nocpsch(struct device_queue_manager * dqm)1392 static int initialize_nocpsch(struct device_queue_manager *dqm)
1393 {
1394 int pipe, queue;
1395
1396 pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm));
1397
1398 dqm->allocated_queues = kcalloc(get_pipes_per_mec(dqm),
1399 sizeof(unsigned int), GFP_KERNEL);
1400 if (!dqm->allocated_queues)
1401 return -ENOMEM;
1402
1403 mutex_init(&dqm->lock_hidden);
1404 INIT_LIST_HEAD(&dqm->queues);
1405 dqm->active_queue_count = dqm->next_pipe_to_allocate = 0;
1406 dqm->active_cp_queue_count = 0;
1407 dqm->gws_queue_count = 0;
1408
1409 for (pipe = 0; pipe < get_pipes_per_mec(dqm); pipe++) {
1410 int pipe_offset = pipe * get_queues_per_pipe(dqm);
1411
1412 for (queue = 0; queue < get_queues_per_pipe(dqm); queue++)
1413 if (test_bit(pipe_offset + queue,
1414 dqm->dev->kfd->shared_resources.cp_queue_bitmap))
1415 dqm->allocated_queues[pipe] |= 1 << queue;
1416 }
1417
1418 memset(dqm->vmid_pasid, 0, sizeof(dqm->vmid_pasid));
1419
1420 init_sdma_bitmaps(dqm);
1421
1422 return 0;
1423 }
1424
uninitialize(struct device_queue_manager * dqm)1425 static void uninitialize(struct device_queue_manager *dqm)
1426 {
1427 int i;
1428
1429 WARN_ON(dqm->active_queue_count > 0 || dqm->processes_count > 0);
1430
1431 kfree(dqm->allocated_queues);
1432 for (i = 0 ; i < KFD_MQD_TYPE_MAX ; i++)
1433 kfree(dqm->mqd_mgrs[i]);
1434 mutex_destroy(&dqm->lock_hidden);
1435 }
1436
start_nocpsch(struct device_queue_manager * dqm)1437 static int start_nocpsch(struct device_queue_manager *dqm)
1438 {
1439 int r = 0;
1440
1441 pr_info("SW scheduler is used");
1442 init_interrupts(dqm);
1443
1444 if (dqm->dev->adev->asic_type == CHIP_HAWAII)
1445 r = pm_init(&dqm->packet_mgr, dqm);
1446 if (!r)
1447 dqm->sched_running = true;
1448
1449 return r;
1450 }
1451
stop_nocpsch(struct device_queue_manager * dqm)1452 static int stop_nocpsch(struct device_queue_manager *dqm)
1453 {
1454 dqm_lock(dqm);
1455 if (!dqm->sched_running) {
1456 dqm_unlock(dqm);
1457 return 0;
1458 }
1459
1460 if (dqm->dev->adev->asic_type == CHIP_HAWAII)
1461 pm_uninit(&dqm->packet_mgr, false);
1462 dqm->sched_running = false;
1463 dqm_unlock(dqm);
1464
1465 return 0;
1466 }
1467
pre_reset(struct device_queue_manager * dqm)1468 static void pre_reset(struct device_queue_manager *dqm)
1469 {
1470 dqm_lock(dqm);
1471 dqm->is_resetting = true;
1472 dqm_unlock(dqm);
1473 }
1474
allocate_sdma_queue(struct device_queue_manager * dqm,struct queue * q,const uint32_t * restore_sdma_id)1475 static int allocate_sdma_queue(struct device_queue_manager *dqm,
1476 struct queue *q, const uint32_t *restore_sdma_id)
1477 {
1478 int bit;
1479
1480 if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
1481 if (bitmap_empty(dqm->sdma_bitmap, KFD_MAX_SDMA_QUEUES)) {
1482 pr_err("No more SDMA queue to allocate\n");
1483 return -ENOMEM;
1484 }
1485
1486 if (restore_sdma_id) {
1487 /* Re-use existing sdma_id */
1488 if (!test_bit(*restore_sdma_id, dqm->sdma_bitmap)) {
1489 pr_err("SDMA queue already in use\n");
1490 return -EBUSY;
1491 }
1492 clear_bit(*restore_sdma_id, dqm->sdma_bitmap);
1493 q->sdma_id = *restore_sdma_id;
1494 } else {
1495 /* Find first available sdma_id */
1496 bit = find_first_bit(dqm->sdma_bitmap,
1497 get_num_sdma_queues(dqm));
1498 clear_bit(bit, dqm->sdma_bitmap);
1499 q->sdma_id = bit;
1500 }
1501
1502 q->properties.sdma_engine_id =
1503 q->sdma_id % kfd_get_num_sdma_engines(dqm->dev);
1504 q->properties.sdma_queue_id = q->sdma_id /
1505 kfd_get_num_sdma_engines(dqm->dev);
1506 } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1507 if (bitmap_empty(dqm->xgmi_sdma_bitmap, KFD_MAX_SDMA_QUEUES)) {
1508 pr_err("No more XGMI SDMA queue to allocate\n");
1509 return -ENOMEM;
1510 }
1511 if (restore_sdma_id) {
1512 /* Re-use existing sdma_id */
1513 if (!test_bit(*restore_sdma_id, dqm->xgmi_sdma_bitmap)) {
1514 pr_err("SDMA queue already in use\n");
1515 return -EBUSY;
1516 }
1517 clear_bit(*restore_sdma_id, dqm->xgmi_sdma_bitmap);
1518 q->sdma_id = *restore_sdma_id;
1519 } else {
1520 bit = find_first_bit(dqm->xgmi_sdma_bitmap,
1521 get_num_xgmi_sdma_queues(dqm));
1522 clear_bit(bit, dqm->xgmi_sdma_bitmap);
1523 q->sdma_id = bit;
1524 }
1525 /* sdma_engine_id is sdma id including
1526 * both PCIe-optimized SDMAs and XGMI-
1527 * optimized SDMAs. The calculation below
1528 * assumes the first N engines are always
1529 * PCIe-optimized ones
1530 */
1531 q->properties.sdma_engine_id =
1532 kfd_get_num_sdma_engines(dqm->dev) +
1533 q->sdma_id % kfd_get_num_xgmi_sdma_engines(dqm->dev);
1534 q->properties.sdma_queue_id = q->sdma_id /
1535 kfd_get_num_xgmi_sdma_engines(dqm->dev);
1536 }
1537
1538 pr_debug("SDMA engine id: %d\n", q->properties.sdma_engine_id);
1539 pr_debug("SDMA queue id: %d\n", q->properties.sdma_queue_id);
1540
1541 return 0;
1542 }
1543
deallocate_sdma_queue(struct device_queue_manager * dqm,struct queue * q)1544 static void deallocate_sdma_queue(struct device_queue_manager *dqm,
1545 struct queue *q)
1546 {
1547 if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
1548 if (q->sdma_id >= get_num_sdma_queues(dqm))
1549 return;
1550 set_bit(q->sdma_id, dqm->sdma_bitmap);
1551 } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1552 if (q->sdma_id >= get_num_xgmi_sdma_queues(dqm))
1553 return;
1554 set_bit(q->sdma_id, dqm->xgmi_sdma_bitmap);
1555 }
1556 }
1557
1558 /*
1559 * Device Queue Manager implementation for cp scheduler
1560 */
1561
set_sched_resources(struct device_queue_manager * dqm)1562 static int set_sched_resources(struct device_queue_manager *dqm)
1563 {
1564 int i, mec;
1565 struct scheduling_resources res;
1566
1567 res.vmid_mask = dqm->dev->compute_vmid_bitmap;
1568
1569 res.queue_mask = 0;
1570 for (i = 0; i < KGD_MAX_QUEUES; ++i) {
1571 mec = (i / dqm->dev->kfd->shared_resources.num_queue_per_pipe)
1572 / dqm->dev->kfd->shared_resources.num_pipe_per_mec;
1573
1574 if (!test_bit(i, dqm->dev->kfd->shared_resources.cp_queue_bitmap))
1575 continue;
1576
1577 /* only acquire queues from the first MEC */
1578 if (mec > 0)
1579 continue;
1580
1581 /* This situation may be hit in the future if a new HW
1582 * generation exposes more than 64 queues. If so, the
1583 * definition of res.queue_mask needs updating
1584 */
1585 if (WARN_ON(i >= (sizeof(res.queue_mask)*8))) {
1586 pr_err("Invalid queue enabled by amdgpu: %d\n", i);
1587 break;
1588 }
1589
1590 res.queue_mask |= 1ull
1591 << amdgpu_queue_mask_bit_to_set_resource_bit(
1592 dqm->dev->adev, i);
1593 }
1594 res.gws_mask = ~0ull;
1595 res.oac_mask = res.gds_heap_base = res.gds_heap_size = 0;
1596
1597 pr_debug("Scheduling resources:\n"
1598 "vmid mask: 0x%8X\n"
1599 "queue mask: 0x%8llX\n",
1600 res.vmid_mask, res.queue_mask);
1601
1602 return pm_send_set_resources(&dqm->packet_mgr, &res);
1603 }
1604
initialize_cpsch(struct device_queue_manager * dqm)1605 static int initialize_cpsch(struct device_queue_manager *dqm)
1606 {
1607 pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm));
1608
1609 mutex_init(&dqm->lock_hidden);
1610 INIT_LIST_HEAD(&dqm->queues);
1611 dqm->active_queue_count = dqm->processes_count = 0;
1612 dqm->active_cp_queue_count = 0;
1613 dqm->gws_queue_count = 0;
1614 dqm->active_runlist = false;
1615 INIT_WORK(&dqm->hw_exception_work, kfd_process_hw_exception);
1616 dqm->trap_debug_vmid = 0;
1617
1618 init_sdma_bitmaps(dqm);
1619
1620 if (dqm->dev->kfd2kgd->get_iq_wait_times)
1621 dqm->dev->kfd2kgd->get_iq_wait_times(dqm->dev->adev,
1622 &dqm->wait_times,
1623 ffs(dqm->dev->xcc_mask) - 1);
1624 return 0;
1625 }
1626
start_cpsch(struct device_queue_manager * dqm)1627 static int start_cpsch(struct device_queue_manager *dqm)
1628 {
1629 int retval;
1630
1631 retval = 0;
1632
1633 dqm_lock(dqm);
1634
1635 if (!dqm->dev->kfd->shared_resources.enable_mes) {
1636 retval = pm_init(&dqm->packet_mgr, dqm);
1637 if (retval)
1638 goto fail_packet_manager_init;
1639
1640 retval = set_sched_resources(dqm);
1641 if (retval)
1642 goto fail_set_sched_resources;
1643 }
1644 pr_debug("Allocating fence memory\n");
1645
1646 /* allocate fence memory on the gart */
1647 retval = kfd_gtt_sa_allocate(dqm->dev, sizeof(*dqm->fence_addr),
1648 &dqm->fence_mem);
1649
1650 if (retval)
1651 goto fail_allocate_vidmem;
1652
1653 dqm->fence_addr = (uint64_t *)dqm->fence_mem->cpu_ptr;
1654 dqm->fence_gpu_addr = dqm->fence_mem->gpu_addr;
1655
1656 init_interrupts(dqm);
1657
1658 /* clear hang status when driver try to start the hw scheduler */
1659 dqm->is_hws_hang = false;
1660 dqm->is_resetting = false;
1661 dqm->sched_running = true;
1662
1663 if (!dqm->dev->kfd->shared_resources.enable_mes)
1664 execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD);
1665
1666 /* Set CWSR grace period to 1x1000 cycle for GFX9.4.3 APU */
1667 if (amdgpu_emu_mode == 0 && dqm->dev->adev->gmc.is_app_apu &&
1668 (KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 3))) {
1669 uint32_t reg_offset = 0;
1670 uint32_t grace_period = 1;
1671
1672 retval = pm_update_grace_period(&dqm->packet_mgr,
1673 grace_period);
1674 if (retval)
1675 pr_err("Setting grace timeout failed\n");
1676 else if (dqm->dev->kfd2kgd->build_grace_period_packet_info)
1677 /* Update dqm->wait_times maintained in software */
1678 dqm->dev->kfd2kgd->build_grace_period_packet_info(
1679 dqm->dev->adev, dqm->wait_times,
1680 grace_period, ®_offset,
1681 &dqm->wait_times);
1682 }
1683
1684 dqm_unlock(dqm);
1685
1686 return 0;
1687 fail_allocate_vidmem:
1688 fail_set_sched_resources:
1689 if (!dqm->dev->kfd->shared_resources.enable_mes)
1690 pm_uninit(&dqm->packet_mgr, false);
1691 fail_packet_manager_init:
1692 dqm_unlock(dqm);
1693 return retval;
1694 }
1695
stop_cpsch(struct device_queue_manager * dqm)1696 static int stop_cpsch(struct device_queue_manager *dqm)
1697 {
1698 bool hanging;
1699
1700 dqm_lock(dqm);
1701 if (!dqm->sched_running) {
1702 dqm_unlock(dqm);
1703 return 0;
1704 }
1705
1706 if (!dqm->is_hws_hang) {
1707 if (!dqm->dev->kfd->shared_resources.enable_mes)
1708 unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD, false);
1709 else
1710 remove_all_queues_mes(dqm);
1711 }
1712
1713 hanging = dqm->is_hws_hang || dqm->is_resetting;
1714 dqm->sched_running = false;
1715
1716 if (!dqm->dev->kfd->shared_resources.enable_mes)
1717 pm_release_ib(&dqm->packet_mgr);
1718
1719 kfd_gtt_sa_free(dqm->dev, dqm->fence_mem);
1720 if (!dqm->dev->kfd->shared_resources.enable_mes)
1721 pm_uninit(&dqm->packet_mgr, hanging);
1722 dqm_unlock(dqm);
1723
1724 return 0;
1725 }
1726
create_kernel_queue_cpsch(struct device_queue_manager * dqm,struct kernel_queue * kq,struct qcm_process_device * qpd)1727 static int create_kernel_queue_cpsch(struct device_queue_manager *dqm,
1728 struct kernel_queue *kq,
1729 struct qcm_process_device *qpd)
1730 {
1731 dqm_lock(dqm);
1732 if (dqm->total_queue_count >= max_num_of_queues_per_device) {
1733 pr_warn("Can't create new kernel queue because %d queues were already created\n",
1734 dqm->total_queue_count);
1735 dqm_unlock(dqm);
1736 return -EPERM;
1737 }
1738
1739 /*
1740 * Unconditionally increment this counter, regardless of the queue's
1741 * type or whether the queue is active.
1742 */
1743 dqm->total_queue_count++;
1744 pr_debug("Total of %d queues are accountable so far\n",
1745 dqm->total_queue_count);
1746
1747 list_add(&kq->list, &qpd->priv_queue_list);
1748 increment_queue_count(dqm, qpd, kq->queue);
1749 qpd->is_debug = true;
1750 execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0,
1751 USE_DEFAULT_GRACE_PERIOD);
1752 dqm_unlock(dqm);
1753
1754 return 0;
1755 }
1756
destroy_kernel_queue_cpsch(struct device_queue_manager * dqm,struct kernel_queue * kq,struct qcm_process_device * qpd)1757 static void destroy_kernel_queue_cpsch(struct device_queue_manager *dqm,
1758 struct kernel_queue *kq,
1759 struct qcm_process_device *qpd)
1760 {
1761 dqm_lock(dqm);
1762 list_del(&kq->list);
1763 decrement_queue_count(dqm, qpd, kq->queue);
1764 qpd->is_debug = false;
1765 execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0,
1766 USE_DEFAULT_GRACE_PERIOD);
1767 /*
1768 * Unconditionally decrement this counter, regardless of the queue's
1769 * type.
1770 */
1771 dqm->total_queue_count--;
1772 pr_debug("Total of %d queues are accountable so far\n",
1773 dqm->total_queue_count);
1774 dqm_unlock(dqm);
1775 }
1776
create_queue_cpsch(struct device_queue_manager * dqm,struct queue * q,struct qcm_process_device * qpd,const struct kfd_criu_queue_priv_data * qd,const void * restore_mqd,const void * restore_ctl_stack)1777 static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
1778 struct qcm_process_device *qpd,
1779 const struct kfd_criu_queue_priv_data *qd,
1780 const void *restore_mqd, const void *restore_ctl_stack)
1781 {
1782 int retval;
1783 struct mqd_manager *mqd_mgr;
1784
1785 if (dqm->total_queue_count >= max_num_of_queues_per_device) {
1786 pr_warn("Can't create new usermode queue because %d queues were already created\n",
1787 dqm->total_queue_count);
1788 retval = -EPERM;
1789 goto out;
1790 }
1791
1792 if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
1793 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1794 dqm_lock(dqm);
1795 retval = allocate_sdma_queue(dqm, q, qd ? &qd->sdma_id : NULL);
1796 dqm_unlock(dqm);
1797 if (retval)
1798 goto out;
1799 }
1800
1801 retval = allocate_doorbell(qpd, q, qd ? &qd->doorbell_id : NULL);
1802 if (retval)
1803 goto out_deallocate_sdma_queue;
1804
1805 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
1806 q->properties.type)];
1807
1808 if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
1809 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
1810 dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
1811 q->properties.tba_addr = qpd->tba_addr;
1812 q->properties.tma_addr = qpd->tma_addr;
1813 q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
1814 if (!q->mqd_mem_obj) {
1815 retval = -ENOMEM;
1816 goto out_deallocate_doorbell;
1817 }
1818
1819 dqm_lock(dqm);
1820 /*
1821 * Eviction state logic: mark all queues as evicted, even ones
1822 * not currently active. Restoring inactive queues later only
1823 * updates the is_evicted flag but is a no-op otherwise.
1824 */
1825 q->properties.is_evicted = !!qpd->evicted;
1826 q->properties.is_dbg_wa = qpd->pqm->process->debug_trap_enabled &&
1827 kfd_dbg_has_cwsr_workaround(q->device);
1828
1829 if (qd)
1830 mqd_mgr->restore_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj, &q->gart_mqd_addr,
1831 &q->properties, restore_mqd, restore_ctl_stack,
1832 qd->ctl_stack_size);
1833 else
1834 mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
1835 &q->gart_mqd_addr, &q->properties);
1836
1837 list_add(&q->list, &qpd->queues_list);
1838 qpd->queue_count++;
1839
1840 if (q->properties.is_active) {
1841 increment_queue_count(dqm, qpd, q);
1842
1843 if (!dqm->dev->kfd->shared_resources.enable_mes)
1844 retval = execute_queues_cpsch(dqm,
1845 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0, USE_DEFAULT_GRACE_PERIOD);
1846 else
1847 retval = add_queue_mes(dqm, q, qpd);
1848 if (retval)
1849 goto cleanup_queue;
1850 }
1851
1852 /*
1853 * Unconditionally increment this counter, regardless of the queue's
1854 * type or whether the queue is active.
1855 */
1856 dqm->total_queue_count++;
1857
1858 pr_debug("Total of %d queues are accountable so far\n",
1859 dqm->total_queue_count);
1860
1861 dqm_unlock(dqm);
1862 return retval;
1863
1864 cleanup_queue:
1865 qpd->queue_count--;
1866 list_del(&q->list);
1867 if (q->properties.is_active)
1868 decrement_queue_count(dqm, qpd, q);
1869 mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
1870 dqm_unlock(dqm);
1871 out_deallocate_doorbell:
1872 deallocate_doorbell(qpd, q);
1873 out_deallocate_sdma_queue:
1874 if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
1875 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1876 dqm_lock(dqm);
1877 deallocate_sdma_queue(dqm, q);
1878 dqm_unlock(dqm);
1879 }
1880 out:
1881 return retval;
1882 }
1883
amdkfd_fence_wait_timeout(uint64_t * fence_addr,uint64_t fence_value,unsigned int timeout_ms)1884 int amdkfd_fence_wait_timeout(uint64_t *fence_addr,
1885 uint64_t fence_value,
1886 unsigned int timeout_ms)
1887 {
1888 unsigned long end_jiffies = msecs_to_jiffies(timeout_ms) + jiffies;
1889
1890 while (*fence_addr != fence_value) {
1891 if (time_after(jiffies, end_jiffies)) {
1892 pr_err("qcm fence wait loop timeout expired\n");
1893 /* In HWS case, this is used to halt the driver thread
1894 * in order not to mess up CP states before doing
1895 * scandumps for FW debugging.
1896 */
1897 while (halt_if_hws_hang)
1898 schedule();
1899
1900 return -ETIME;
1901 }
1902 schedule();
1903 }
1904
1905 return 0;
1906 }
1907
1908 /* dqm->lock mutex has to be locked before calling this function */
map_queues_cpsch(struct device_queue_manager * dqm)1909 static int map_queues_cpsch(struct device_queue_manager *dqm)
1910 {
1911 int retval;
1912
1913 if (!dqm->sched_running)
1914 return 0;
1915 if (dqm->active_queue_count <= 0 || dqm->processes_count <= 0)
1916 return 0;
1917 if (dqm->active_runlist)
1918 return 0;
1919
1920 retval = pm_send_runlist(&dqm->packet_mgr, &dqm->queues);
1921 pr_debug("%s sent runlist\n", __func__);
1922 if (retval) {
1923 pr_err("failed to execute runlist\n");
1924 return retval;
1925 }
1926 dqm->active_runlist = true;
1927
1928 return retval;
1929 }
1930
1931 /* dqm->lock mutex has to be locked before calling this function */
unmap_queues_cpsch(struct device_queue_manager * dqm,enum kfd_unmap_queues_filter filter,uint32_t filter_param,uint32_t grace_period,bool reset)1932 static int unmap_queues_cpsch(struct device_queue_manager *dqm,
1933 enum kfd_unmap_queues_filter filter,
1934 uint32_t filter_param,
1935 uint32_t grace_period,
1936 bool reset)
1937 {
1938 int retval = 0;
1939 struct mqd_manager *mqd_mgr;
1940
1941 if (!dqm->sched_running)
1942 return 0;
1943 if (dqm->is_hws_hang || dqm->is_resetting)
1944 return -EIO;
1945 if (!dqm->active_runlist)
1946 return retval;
1947
1948 if (grace_period != USE_DEFAULT_GRACE_PERIOD) {
1949 retval = pm_update_grace_period(&dqm->packet_mgr, grace_period);
1950 if (retval)
1951 return retval;
1952 }
1953
1954 retval = pm_send_unmap_queue(&dqm->packet_mgr, filter, filter_param, reset);
1955 if (retval)
1956 return retval;
1957
1958 *dqm->fence_addr = KFD_FENCE_INIT;
1959 pm_send_query_status(&dqm->packet_mgr, dqm->fence_gpu_addr,
1960 KFD_FENCE_COMPLETED);
1961 /* should be timed out */
1962 retval = amdkfd_fence_wait_timeout(dqm->fence_addr, KFD_FENCE_COMPLETED,
1963 queue_preemption_timeout_ms);
1964 if (retval) {
1965 pr_err("The cp might be in an unrecoverable state due to an unsuccessful queues preemption\n");
1966 kfd_hws_hang(dqm);
1967 return retval;
1968 }
1969
1970 /* In the current MEC firmware implementation, if compute queue
1971 * doesn't response to the preemption request in time, HIQ will
1972 * abandon the unmap request without returning any timeout error
1973 * to driver. Instead, MEC firmware will log the doorbell of the
1974 * unresponding compute queue to HIQ.MQD.queue_doorbell_id fields.
1975 * To make sure the queue unmap was successful, driver need to
1976 * check those fields
1977 */
1978 mqd_mgr = dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ];
1979 if (mqd_mgr->read_doorbell_id(dqm->packet_mgr.priv_queue->queue->mqd)) {
1980 pr_err("HIQ MQD's queue_doorbell_id0 is not 0, Queue preemption time out\n");
1981 while (halt_if_hws_hang)
1982 schedule();
1983 kfd_hws_hang(dqm);
1984 return -ETIME;
1985 }
1986
1987 /* We need to reset the grace period value for this device */
1988 if (grace_period != USE_DEFAULT_GRACE_PERIOD) {
1989 if (pm_update_grace_period(&dqm->packet_mgr,
1990 USE_DEFAULT_GRACE_PERIOD))
1991 pr_err("Failed to reset grace period\n");
1992 }
1993
1994 pm_release_ib(&dqm->packet_mgr);
1995 dqm->active_runlist = false;
1996
1997 return retval;
1998 }
1999
2000 /* only for compute queue */
reset_queues_cpsch(struct device_queue_manager * dqm,uint16_t pasid)2001 static int reset_queues_cpsch(struct device_queue_manager *dqm,
2002 uint16_t pasid)
2003 {
2004 int retval;
2005
2006 dqm_lock(dqm);
2007
2008 retval = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_BY_PASID,
2009 pasid, USE_DEFAULT_GRACE_PERIOD, true);
2010
2011 dqm_unlock(dqm);
2012 return retval;
2013 }
2014
2015 /* dqm->lock mutex has to be locked before calling this function */
execute_queues_cpsch(struct device_queue_manager * dqm,enum kfd_unmap_queues_filter filter,uint32_t filter_param,uint32_t grace_period)2016 static int execute_queues_cpsch(struct device_queue_manager *dqm,
2017 enum kfd_unmap_queues_filter filter,
2018 uint32_t filter_param,
2019 uint32_t grace_period)
2020 {
2021 int retval;
2022
2023 if (dqm->is_hws_hang)
2024 return -EIO;
2025 retval = unmap_queues_cpsch(dqm, filter, filter_param, grace_period, false);
2026 if (retval)
2027 return retval;
2028
2029 return map_queues_cpsch(dqm);
2030 }
2031
wait_on_destroy_queue(struct device_queue_manager * dqm,struct queue * q)2032 static int wait_on_destroy_queue(struct device_queue_manager *dqm,
2033 struct queue *q)
2034 {
2035 struct kfd_process_device *pdd = kfd_get_process_device_data(q->device,
2036 q->process);
2037 int ret = 0;
2038
2039 if (pdd->qpd.is_debug)
2040 return ret;
2041
2042 q->properties.is_being_destroyed = true;
2043
2044 if (pdd->process->debug_trap_enabled && q->properties.is_suspended) {
2045 dqm_unlock(dqm);
2046 mutex_unlock(&q->process->mutex);
2047 ret = wait_event_interruptible(dqm->destroy_wait,
2048 !q->properties.is_suspended);
2049
2050 mutex_lock(&q->process->mutex);
2051 dqm_lock(dqm);
2052 }
2053
2054 return ret;
2055 }
2056
destroy_queue_cpsch(struct device_queue_manager * dqm,struct qcm_process_device * qpd,struct queue * q)2057 static int destroy_queue_cpsch(struct device_queue_manager *dqm,
2058 struct qcm_process_device *qpd,
2059 struct queue *q)
2060 {
2061 int retval;
2062 struct mqd_manager *mqd_mgr;
2063 uint64_t sdma_val = 0;
2064 struct kfd_process_device *pdd = qpd_to_pdd(qpd);
2065
2066 /* Get the SDMA queue stats */
2067 if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) ||
2068 (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
2069 retval = read_sdma_queue_counter((uint64_t __user *)q->properties.read_ptr,
2070 &sdma_val);
2071 if (retval)
2072 pr_err("Failed to read SDMA queue counter for queue: %d\n",
2073 q->properties.queue_id);
2074 }
2075
2076 /* remove queue from list to prevent rescheduling after preemption */
2077 dqm_lock(dqm);
2078
2079 retval = wait_on_destroy_queue(dqm, q);
2080
2081 if (retval) {
2082 dqm_unlock(dqm);
2083 return retval;
2084 }
2085
2086 if (qpd->is_debug) {
2087 /*
2088 * error, currently we do not allow to destroy a queue
2089 * of a currently debugged process
2090 */
2091 retval = -EBUSY;
2092 goto failed_try_destroy_debugged_queue;
2093
2094 }
2095
2096 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
2097 q->properties.type)];
2098
2099 deallocate_doorbell(qpd, q);
2100
2101 if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) ||
2102 (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
2103 deallocate_sdma_queue(dqm, q);
2104 pdd->sdma_past_activity_counter += sdma_val;
2105 }
2106
2107 list_del(&q->list);
2108 qpd->queue_count--;
2109 if (q->properties.is_active) {
2110 decrement_queue_count(dqm, qpd, q);
2111 if (!dqm->dev->kfd->shared_resources.enable_mes) {
2112 retval = execute_queues_cpsch(dqm,
2113 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0,
2114 USE_DEFAULT_GRACE_PERIOD);
2115 if (retval == -ETIME)
2116 qpd->reset_wavefronts = true;
2117 } else {
2118 retval = remove_queue_mes(dqm, q, qpd);
2119 }
2120 }
2121
2122 /*
2123 * Unconditionally decrement this counter, regardless of the queue's
2124 * type
2125 */
2126 dqm->total_queue_count--;
2127 pr_debug("Total of %d queues are accountable so far\n",
2128 dqm->total_queue_count);
2129
2130 dqm_unlock(dqm);
2131
2132 /*
2133 * Do free_mqd and raise delete event after dqm_unlock(dqm) to avoid
2134 * circular locking
2135 */
2136 kfd_dbg_ev_raise(KFD_EC_MASK(EC_DEVICE_QUEUE_DELETE),
2137 qpd->pqm->process, q->device,
2138 -1, false, NULL, 0);
2139
2140 mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
2141
2142 return retval;
2143
2144 failed_try_destroy_debugged_queue:
2145
2146 dqm_unlock(dqm);
2147 return retval;
2148 }
2149
2150 /*
2151 * Low bits must be 0000/FFFF as required by HW, high bits must be 0 to
2152 * stay in user mode.
2153 */
2154 #define APE1_FIXED_BITS_MASK 0xFFFF80000000FFFFULL
2155 /* APE1 limit is inclusive and 64K aligned. */
2156 #define APE1_LIMIT_ALIGNMENT 0xFFFF
2157
set_cache_memory_policy(struct device_queue_manager * dqm,struct qcm_process_device * qpd,enum cache_policy default_policy,enum cache_policy alternate_policy,void __user * alternate_aperture_base,uint64_t alternate_aperture_size)2158 static bool set_cache_memory_policy(struct device_queue_manager *dqm,
2159 struct qcm_process_device *qpd,
2160 enum cache_policy default_policy,
2161 enum cache_policy alternate_policy,
2162 void __user *alternate_aperture_base,
2163 uint64_t alternate_aperture_size)
2164 {
2165 bool retval = true;
2166
2167 if (!dqm->asic_ops.set_cache_memory_policy)
2168 return retval;
2169
2170 dqm_lock(dqm);
2171
2172 if (alternate_aperture_size == 0) {
2173 /* base > limit disables APE1 */
2174 qpd->sh_mem_ape1_base = 1;
2175 qpd->sh_mem_ape1_limit = 0;
2176 } else {
2177 /*
2178 * In FSA64, APE1_Base[63:0] = { 16{SH_MEM_APE1_BASE[31]},
2179 * SH_MEM_APE1_BASE[31:0], 0x0000 }
2180 * APE1_Limit[63:0] = { 16{SH_MEM_APE1_LIMIT[31]},
2181 * SH_MEM_APE1_LIMIT[31:0], 0xFFFF }
2182 * Verify that the base and size parameters can be
2183 * represented in this format and convert them.
2184 * Additionally restrict APE1 to user-mode addresses.
2185 */
2186
2187 uint64_t base = (uintptr_t)alternate_aperture_base;
2188 uint64_t limit = base + alternate_aperture_size - 1;
2189
2190 if (limit <= base || (base & APE1_FIXED_BITS_MASK) != 0 ||
2191 (limit & APE1_FIXED_BITS_MASK) != APE1_LIMIT_ALIGNMENT) {
2192 retval = false;
2193 goto out;
2194 }
2195
2196 qpd->sh_mem_ape1_base = base >> 16;
2197 qpd->sh_mem_ape1_limit = limit >> 16;
2198 }
2199
2200 retval = dqm->asic_ops.set_cache_memory_policy(
2201 dqm,
2202 qpd,
2203 default_policy,
2204 alternate_policy,
2205 alternate_aperture_base,
2206 alternate_aperture_size);
2207
2208 if ((dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) && (qpd->vmid != 0))
2209 program_sh_mem_settings(dqm, qpd);
2210
2211 pr_debug("sh_mem_config: 0x%x, ape1_base: 0x%x, ape1_limit: 0x%x\n",
2212 qpd->sh_mem_config, qpd->sh_mem_ape1_base,
2213 qpd->sh_mem_ape1_limit);
2214
2215 out:
2216 dqm_unlock(dqm);
2217 return retval;
2218 }
2219
process_termination_nocpsch(struct device_queue_manager * dqm,struct qcm_process_device * qpd)2220 static int process_termination_nocpsch(struct device_queue_manager *dqm,
2221 struct qcm_process_device *qpd)
2222 {
2223 struct queue *q;
2224 struct device_process_node *cur, *next_dpn;
2225 int retval = 0;
2226 bool found = false;
2227
2228 dqm_lock(dqm);
2229
2230 /* Clear all user mode queues */
2231 while (!list_empty(&qpd->queues_list)) {
2232 struct mqd_manager *mqd_mgr;
2233 int ret;
2234
2235 q = list_first_entry(&qpd->queues_list, struct queue, list);
2236 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
2237 q->properties.type)];
2238 ret = destroy_queue_nocpsch_locked(dqm, qpd, q);
2239 if (ret)
2240 retval = ret;
2241 dqm_unlock(dqm);
2242 mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
2243 dqm_lock(dqm);
2244 }
2245
2246 /* Unregister process */
2247 list_for_each_entry_safe(cur, next_dpn, &dqm->queues, list) {
2248 if (qpd == cur->qpd) {
2249 list_del(&cur->list);
2250 kfree(cur);
2251 dqm->processes_count--;
2252 found = true;
2253 break;
2254 }
2255 }
2256
2257 dqm_unlock(dqm);
2258
2259 /* Outside the DQM lock because under the DQM lock we can't do
2260 * reclaim or take other locks that others hold while reclaiming.
2261 */
2262 if (found)
2263 kfd_dec_compute_active(dqm->dev);
2264
2265 return retval;
2266 }
2267
get_wave_state(struct device_queue_manager * dqm,struct queue * q,void __user * ctl_stack,u32 * ctl_stack_used_size,u32 * save_area_used_size)2268 static int get_wave_state(struct device_queue_manager *dqm,
2269 struct queue *q,
2270 void __user *ctl_stack,
2271 u32 *ctl_stack_used_size,
2272 u32 *save_area_used_size)
2273 {
2274 struct mqd_manager *mqd_mgr;
2275
2276 dqm_lock(dqm);
2277
2278 mqd_mgr = dqm->mqd_mgrs[KFD_MQD_TYPE_CP];
2279
2280 if (q->properties.type != KFD_QUEUE_TYPE_COMPUTE ||
2281 q->properties.is_active || !q->device->kfd->cwsr_enabled ||
2282 !mqd_mgr->get_wave_state) {
2283 dqm_unlock(dqm);
2284 return -EINVAL;
2285 }
2286
2287 dqm_unlock(dqm);
2288
2289 /*
2290 * get_wave_state is outside the dqm lock to prevent circular locking
2291 * and the queue should be protected against destruction by the process
2292 * lock.
2293 */
2294 return mqd_mgr->get_wave_state(mqd_mgr, q->mqd, &q->properties,
2295 ctl_stack, ctl_stack_used_size, save_area_used_size);
2296 }
2297
get_queue_checkpoint_info(struct device_queue_manager * dqm,const struct queue * q,u32 * mqd_size,u32 * ctl_stack_size)2298 static void get_queue_checkpoint_info(struct device_queue_manager *dqm,
2299 const struct queue *q,
2300 u32 *mqd_size,
2301 u32 *ctl_stack_size)
2302 {
2303 struct mqd_manager *mqd_mgr;
2304 enum KFD_MQD_TYPE mqd_type =
2305 get_mqd_type_from_queue_type(q->properties.type);
2306
2307 dqm_lock(dqm);
2308 mqd_mgr = dqm->mqd_mgrs[mqd_type];
2309 *mqd_size = mqd_mgr->mqd_size;
2310 *ctl_stack_size = 0;
2311
2312 if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE && mqd_mgr->get_checkpoint_info)
2313 mqd_mgr->get_checkpoint_info(mqd_mgr, q->mqd, ctl_stack_size);
2314
2315 dqm_unlock(dqm);
2316 }
2317
checkpoint_mqd(struct device_queue_manager * dqm,const struct queue * q,void * mqd,void * ctl_stack)2318 static int checkpoint_mqd(struct device_queue_manager *dqm,
2319 const struct queue *q,
2320 void *mqd,
2321 void *ctl_stack)
2322 {
2323 struct mqd_manager *mqd_mgr;
2324 int r = 0;
2325 enum KFD_MQD_TYPE mqd_type =
2326 get_mqd_type_from_queue_type(q->properties.type);
2327
2328 dqm_lock(dqm);
2329
2330 if (q->properties.is_active || !q->device->kfd->cwsr_enabled) {
2331 r = -EINVAL;
2332 goto dqm_unlock;
2333 }
2334
2335 mqd_mgr = dqm->mqd_mgrs[mqd_type];
2336 if (!mqd_mgr->checkpoint_mqd) {
2337 r = -EOPNOTSUPP;
2338 goto dqm_unlock;
2339 }
2340
2341 mqd_mgr->checkpoint_mqd(mqd_mgr, q->mqd, mqd, ctl_stack);
2342
2343 dqm_unlock:
2344 dqm_unlock(dqm);
2345 return r;
2346 }
2347
process_termination_cpsch(struct device_queue_manager * dqm,struct qcm_process_device * qpd)2348 static int process_termination_cpsch(struct device_queue_manager *dqm,
2349 struct qcm_process_device *qpd)
2350 {
2351 int retval;
2352 struct queue *q;
2353 struct kernel_queue *kq, *kq_next;
2354 struct mqd_manager *mqd_mgr;
2355 struct device_process_node *cur, *next_dpn;
2356 enum kfd_unmap_queues_filter filter =
2357 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES;
2358 bool found = false;
2359
2360 retval = 0;
2361
2362 dqm_lock(dqm);
2363
2364 /* Clean all kernel queues */
2365 list_for_each_entry_safe(kq, kq_next, &qpd->priv_queue_list, list) {
2366 list_del(&kq->list);
2367 decrement_queue_count(dqm, qpd, kq->queue);
2368 qpd->is_debug = false;
2369 dqm->total_queue_count--;
2370 filter = KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES;
2371 }
2372
2373 /* Clear all user mode queues */
2374 list_for_each_entry(q, &qpd->queues_list, list) {
2375 if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
2376 deallocate_sdma_queue(dqm, q);
2377 else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
2378 deallocate_sdma_queue(dqm, q);
2379
2380 if (q->properties.is_active) {
2381 decrement_queue_count(dqm, qpd, q);
2382
2383 if (dqm->dev->kfd->shared_resources.enable_mes) {
2384 retval = remove_queue_mes(dqm, q, qpd);
2385 if (retval)
2386 pr_err("Failed to remove queue %d\n",
2387 q->properties.queue_id);
2388 }
2389 }
2390
2391 dqm->total_queue_count--;
2392 }
2393
2394 /* Unregister process */
2395 list_for_each_entry_safe(cur, next_dpn, &dqm->queues, list) {
2396 if (qpd == cur->qpd) {
2397 list_del(&cur->list);
2398 kfree(cur);
2399 dqm->processes_count--;
2400 found = true;
2401 break;
2402 }
2403 }
2404
2405 if (!dqm->dev->kfd->shared_resources.enable_mes)
2406 retval = execute_queues_cpsch(dqm, filter, 0, USE_DEFAULT_GRACE_PERIOD);
2407
2408 if ((!dqm->is_hws_hang) && (retval || qpd->reset_wavefronts)) {
2409 pr_warn("Resetting wave fronts (cpsch) on dev %p\n", dqm->dev);
2410 dbgdev_wave_reset_wavefronts(dqm->dev, qpd->pqm->process);
2411 qpd->reset_wavefronts = false;
2412 }
2413
2414 /* Lastly, free mqd resources.
2415 * Do free_mqd() after dqm_unlock to avoid circular locking.
2416 */
2417 while (!list_empty(&qpd->queues_list)) {
2418 q = list_first_entry(&qpd->queues_list, struct queue, list);
2419 mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
2420 q->properties.type)];
2421 list_del(&q->list);
2422 qpd->queue_count--;
2423 dqm_unlock(dqm);
2424 mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
2425 dqm_lock(dqm);
2426 }
2427 dqm_unlock(dqm);
2428
2429 /* Outside the DQM lock because under the DQM lock we can't do
2430 * reclaim or take other locks that others hold while reclaiming.
2431 */
2432 if (found)
2433 kfd_dec_compute_active(dqm->dev);
2434
2435 return retval;
2436 }
2437
init_mqd_managers(struct device_queue_manager * dqm)2438 static int init_mqd_managers(struct device_queue_manager *dqm)
2439 {
2440 int i, j;
2441 struct mqd_manager *mqd_mgr;
2442
2443 for (i = 0; i < KFD_MQD_TYPE_MAX; i++) {
2444 mqd_mgr = dqm->asic_ops.mqd_manager_init(i, dqm->dev);
2445 if (!mqd_mgr) {
2446 pr_err("mqd manager [%d] initialization failed\n", i);
2447 goto out_free;
2448 }
2449 dqm->mqd_mgrs[i] = mqd_mgr;
2450 }
2451
2452 return 0;
2453
2454 out_free:
2455 for (j = 0; j < i; j++) {
2456 kfree(dqm->mqd_mgrs[j]);
2457 dqm->mqd_mgrs[j] = NULL;
2458 }
2459
2460 return -ENOMEM;
2461 }
2462
2463 /* Allocate one hiq mqd (HWS) and all SDMA mqd in a continuous trunk*/
allocate_hiq_sdma_mqd(struct device_queue_manager * dqm)2464 static int allocate_hiq_sdma_mqd(struct device_queue_manager *dqm)
2465 {
2466 int retval;
2467 struct kfd_node *dev = dqm->dev;
2468 struct kfd_mem_obj *mem_obj = &dqm->hiq_sdma_mqd;
2469 uint32_t size = dqm->mqd_mgrs[KFD_MQD_TYPE_SDMA]->mqd_size *
2470 get_num_all_sdma_engines(dqm) *
2471 dev->kfd->device_info.num_sdma_queues_per_engine +
2472 (dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ]->mqd_size *
2473 NUM_XCC(dqm->dev->xcc_mask));
2474
2475 retval = amdgpu_amdkfd_alloc_gtt_mem(dev->adev, size,
2476 &(mem_obj->gtt_mem), &(mem_obj->gpu_addr),
2477 (void *)&(mem_obj->cpu_ptr), false);
2478
2479 return retval;
2480 }
2481
device_queue_manager_init(struct kfd_node * dev)2482 struct device_queue_manager *device_queue_manager_init(struct kfd_node *dev)
2483 {
2484 struct device_queue_manager *dqm;
2485
2486 pr_debug("Loading device queue manager\n");
2487
2488 dqm = kzalloc(sizeof(*dqm), GFP_KERNEL);
2489 if (!dqm)
2490 return NULL;
2491
2492 switch (dev->adev->asic_type) {
2493 /* HWS is not available on Hawaii. */
2494 case CHIP_HAWAII:
2495 /* HWS depends on CWSR for timely dequeue. CWSR is not
2496 * available on Tonga.
2497 *
2498 * FIXME: This argument also applies to Kaveri.
2499 */
2500 case CHIP_TONGA:
2501 dqm->sched_policy = KFD_SCHED_POLICY_NO_HWS;
2502 break;
2503 default:
2504 dqm->sched_policy = sched_policy;
2505 break;
2506 }
2507
2508 dqm->dev = dev;
2509 switch (dqm->sched_policy) {
2510 case KFD_SCHED_POLICY_HWS:
2511 case KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION:
2512 /* initialize dqm for cp scheduling */
2513 dqm->ops.create_queue = create_queue_cpsch;
2514 dqm->ops.initialize = initialize_cpsch;
2515 dqm->ops.start = start_cpsch;
2516 dqm->ops.stop = stop_cpsch;
2517 dqm->ops.pre_reset = pre_reset;
2518 dqm->ops.destroy_queue = destroy_queue_cpsch;
2519 dqm->ops.update_queue = update_queue;
2520 dqm->ops.register_process = register_process;
2521 dqm->ops.unregister_process = unregister_process;
2522 dqm->ops.uninitialize = uninitialize;
2523 dqm->ops.create_kernel_queue = create_kernel_queue_cpsch;
2524 dqm->ops.destroy_kernel_queue = destroy_kernel_queue_cpsch;
2525 dqm->ops.set_cache_memory_policy = set_cache_memory_policy;
2526 dqm->ops.process_termination = process_termination_cpsch;
2527 dqm->ops.evict_process_queues = evict_process_queues_cpsch;
2528 dqm->ops.restore_process_queues = restore_process_queues_cpsch;
2529 dqm->ops.get_wave_state = get_wave_state;
2530 dqm->ops.reset_queues = reset_queues_cpsch;
2531 dqm->ops.get_queue_checkpoint_info = get_queue_checkpoint_info;
2532 dqm->ops.checkpoint_mqd = checkpoint_mqd;
2533 break;
2534 case KFD_SCHED_POLICY_NO_HWS:
2535 /* initialize dqm for no cp scheduling */
2536 dqm->ops.start = start_nocpsch;
2537 dqm->ops.stop = stop_nocpsch;
2538 dqm->ops.pre_reset = pre_reset;
2539 dqm->ops.create_queue = create_queue_nocpsch;
2540 dqm->ops.destroy_queue = destroy_queue_nocpsch;
2541 dqm->ops.update_queue = update_queue;
2542 dqm->ops.register_process = register_process;
2543 dqm->ops.unregister_process = unregister_process;
2544 dqm->ops.initialize = initialize_nocpsch;
2545 dqm->ops.uninitialize = uninitialize;
2546 dqm->ops.set_cache_memory_policy = set_cache_memory_policy;
2547 dqm->ops.process_termination = process_termination_nocpsch;
2548 dqm->ops.evict_process_queues = evict_process_queues_nocpsch;
2549 dqm->ops.restore_process_queues =
2550 restore_process_queues_nocpsch;
2551 dqm->ops.get_wave_state = get_wave_state;
2552 dqm->ops.get_queue_checkpoint_info = get_queue_checkpoint_info;
2553 dqm->ops.checkpoint_mqd = checkpoint_mqd;
2554 break;
2555 default:
2556 pr_err("Invalid scheduling policy %d\n", dqm->sched_policy);
2557 goto out_free;
2558 }
2559
2560 switch (dev->adev->asic_type) {
2561 case CHIP_KAVERI:
2562 case CHIP_HAWAII:
2563 device_queue_manager_init_cik(&dqm->asic_ops);
2564 break;
2565
2566 case CHIP_CARRIZO:
2567 case CHIP_TONGA:
2568 case CHIP_FIJI:
2569 case CHIP_POLARIS10:
2570 case CHIP_POLARIS11:
2571 case CHIP_POLARIS12:
2572 case CHIP_VEGAM:
2573 device_queue_manager_init_vi(&dqm->asic_ops);
2574 break;
2575
2576 default:
2577 if (KFD_GC_VERSION(dev) >= IP_VERSION(11, 0, 0))
2578 device_queue_manager_init_v11(&dqm->asic_ops);
2579 else if (KFD_GC_VERSION(dev) >= IP_VERSION(10, 1, 1))
2580 device_queue_manager_init_v10(&dqm->asic_ops);
2581 else if (KFD_GC_VERSION(dev) >= IP_VERSION(9, 0, 1))
2582 device_queue_manager_init_v9(&dqm->asic_ops);
2583 else {
2584 WARN(1, "Unexpected ASIC family %u",
2585 dev->adev->asic_type);
2586 goto out_free;
2587 }
2588 }
2589
2590 if (init_mqd_managers(dqm))
2591 goto out_free;
2592
2593 if (!dev->kfd->shared_resources.enable_mes && allocate_hiq_sdma_mqd(dqm)) {
2594 pr_err("Failed to allocate hiq sdma mqd trunk buffer\n");
2595 goto out_free;
2596 }
2597
2598 if (!dqm->ops.initialize(dqm)) {
2599 init_waitqueue_head(&dqm->destroy_wait);
2600 return dqm;
2601 }
2602
2603 out_free:
2604 kfree(dqm);
2605 return NULL;
2606 }
2607
deallocate_hiq_sdma_mqd(struct kfd_node * dev,struct kfd_mem_obj * mqd)2608 static void deallocate_hiq_sdma_mqd(struct kfd_node *dev,
2609 struct kfd_mem_obj *mqd)
2610 {
2611 WARN(!mqd, "No hiq sdma mqd trunk to free");
2612
2613 amdgpu_amdkfd_free_gtt_mem(dev->adev, &mqd->gtt_mem);
2614 }
2615
device_queue_manager_uninit(struct device_queue_manager * dqm)2616 void device_queue_manager_uninit(struct device_queue_manager *dqm)
2617 {
2618 dqm->ops.stop(dqm);
2619 dqm->ops.uninitialize(dqm);
2620 if (!dqm->dev->kfd->shared_resources.enable_mes)
2621 deallocate_hiq_sdma_mqd(dqm->dev, &dqm->hiq_sdma_mqd);
2622 kfree(dqm);
2623 }
2624
kfd_dqm_evict_pasid(struct device_queue_manager * dqm,u32 pasid)2625 int kfd_dqm_evict_pasid(struct device_queue_manager *dqm, u32 pasid)
2626 {
2627 struct kfd_process_device *pdd;
2628 struct kfd_process *p = kfd_lookup_process_by_pasid(pasid);
2629 int ret = 0;
2630
2631 if (!p)
2632 return -EINVAL;
2633 WARN(debug_evictions, "Evicting pid %d", p->lead_thread->pid);
2634 pdd = kfd_get_process_device_data(dqm->dev, p);
2635 if (pdd)
2636 ret = dqm->ops.evict_process_queues(dqm, &pdd->qpd);
2637 kfd_unref_process(p);
2638
2639 return ret;
2640 }
2641
kfd_process_hw_exception(struct work_struct * work)2642 static void kfd_process_hw_exception(struct work_struct *work)
2643 {
2644 struct device_queue_manager *dqm = container_of(work,
2645 struct device_queue_manager, hw_exception_work);
2646 amdgpu_amdkfd_gpu_reset(dqm->dev->adev);
2647 }
2648
reserve_debug_trap_vmid(struct device_queue_manager * dqm,struct qcm_process_device * qpd)2649 int reserve_debug_trap_vmid(struct device_queue_manager *dqm,
2650 struct qcm_process_device *qpd)
2651 {
2652 int r;
2653 int updated_vmid_mask;
2654
2655 if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
2656 pr_err("Unsupported on sched_policy: %i\n", dqm->sched_policy);
2657 return -EINVAL;
2658 }
2659
2660 dqm_lock(dqm);
2661
2662 if (dqm->trap_debug_vmid != 0) {
2663 pr_err("Trap debug id already reserved\n");
2664 r = -EBUSY;
2665 goto out_unlock;
2666 }
2667
2668 r = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0,
2669 USE_DEFAULT_GRACE_PERIOD, false);
2670 if (r)
2671 goto out_unlock;
2672
2673 updated_vmid_mask = dqm->dev->kfd->shared_resources.compute_vmid_bitmap;
2674 updated_vmid_mask &= ~(1 << dqm->dev->vm_info.last_vmid_kfd);
2675
2676 dqm->dev->kfd->shared_resources.compute_vmid_bitmap = updated_vmid_mask;
2677 dqm->trap_debug_vmid = dqm->dev->vm_info.last_vmid_kfd;
2678 r = set_sched_resources(dqm);
2679 if (r)
2680 goto out_unlock;
2681
2682 r = map_queues_cpsch(dqm);
2683 if (r)
2684 goto out_unlock;
2685
2686 pr_debug("Reserved VMID for trap debug: %i\n", dqm->trap_debug_vmid);
2687
2688 out_unlock:
2689 dqm_unlock(dqm);
2690 return r;
2691 }
2692
2693 /*
2694 * Releases vmid for the trap debugger
2695 */
release_debug_trap_vmid(struct device_queue_manager * dqm,struct qcm_process_device * qpd)2696 int release_debug_trap_vmid(struct device_queue_manager *dqm,
2697 struct qcm_process_device *qpd)
2698 {
2699 int r;
2700 int updated_vmid_mask;
2701 uint32_t trap_debug_vmid;
2702
2703 if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
2704 pr_err("Unsupported on sched_policy: %i\n", dqm->sched_policy);
2705 return -EINVAL;
2706 }
2707
2708 dqm_lock(dqm);
2709 trap_debug_vmid = dqm->trap_debug_vmid;
2710 if (dqm->trap_debug_vmid == 0) {
2711 pr_err("Trap debug id is not reserved\n");
2712 r = -EINVAL;
2713 goto out_unlock;
2714 }
2715
2716 r = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0,
2717 USE_DEFAULT_GRACE_PERIOD, false);
2718 if (r)
2719 goto out_unlock;
2720
2721 updated_vmid_mask = dqm->dev->kfd->shared_resources.compute_vmid_bitmap;
2722 updated_vmid_mask |= (1 << dqm->dev->vm_info.last_vmid_kfd);
2723
2724 dqm->dev->kfd->shared_resources.compute_vmid_bitmap = updated_vmid_mask;
2725 dqm->trap_debug_vmid = 0;
2726 r = set_sched_resources(dqm);
2727 if (r)
2728 goto out_unlock;
2729
2730 r = map_queues_cpsch(dqm);
2731 if (r)
2732 goto out_unlock;
2733
2734 pr_debug("Released VMID for trap debug: %i\n", trap_debug_vmid);
2735
2736 out_unlock:
2737 dqm_unlock(dqm);
2738 return r;
2739 }
2740
2741 #define QUEUE_NOT_FOUND -1
2742 /* invalidate queue operation in array */
q_array_invalidate(uint32_t num_queues,uint32_t * queue_ids)2743 static void q_array_invalidate(uint32_t num_queues, uint32_t *queue_ids)
2744 {
2745 int i;
2746
2747 for (i = 0; i < num_queues; i++)
2748 queue_ids[i] |= KFD_DBG_QUEUE_INVALID_MASK;
2749 }
2750
2751 /* find queue index in array */
q_array_get_index(unsigned int queue_id,uint32_t num_queues,uint32_t * queue_ids)2752 static int q_array_get_index(unsigned int queue_id,
2753 uint32_t num_queues,
2754 uint32_t *queue_ids)
2755 {
2756 int i;
2757
2758 for (i = 0; i < num_queues; i++)
2759 if (queue_id == (queue_ids[i] & ~KFD_DBG_QUEUE_INVALID_MASK))
2760 return i;
2761
2762 return QUEUE_NOT_FOUND;
2763 }
2764
2765 struct copy_context_work_handler_workarea {
2766 struct work_struct copy_context_work;
2767 struct kfd_process *p;
2768 };
2769
copy_context_work_handler(struct work_struct * work)2770 static void copy_context_work_handler (struct work_struct *work)
2771 {
2772 struct copy_context_work_handler_workarea *workarea;
2773 struct mqd_manager *mqd_mgr;
2774 struct queue *q;
2775 struct mm_struct *mm;
2776 struct kfd_process *p;
2777 uint32_t tmp_ctl_stack_used_size, tmp_save_area_used_size;
2778 int i;
2779
2780 workarea = container_of(work,
2781 struct copy_context_work_handler_workarea,
2782 copy_context_work);
2783
2784 p = workarea->p;
2785 mm = get_task_mm(p->lead_thread);
2786
2787 if (!mm)
2788 return;
2789
2790 kthread_use_mm(mm);
2791 for (i = 0; i < p->n_pdds; i++) {
2792 struct kfd_process_device *pdd = p->pdds[i];
2793 struct device_queue_manager *dqm = pdd->dev->dqm;
2794 struct qcm_process_device *qpd = &pdd->qpd;
2795
2796 list_for_each_entry(q, &qpd->queues_list, list) {
2797 mqd_mgr = dqm->mqd_mgrs[KFD_MQD_TYPE_CP];
2798
2799 /* We ignore the return value from get_wave_state
2800 * because
2801 * i) right now, it always returns 0, and
2802 * ii) if we hit an error, we would continue to the
2803 * next queue anyway.
2804 */
2805 mqd_mgr->get_wave_state(mqd_mgr,
2806 q->mqd,
2807 &q->properties,
2808 (void __user *) q->properties.ctx_save_restore_area_address,
2809 &tmp_ctl_stack_used_size,
2810 &tmp_save_area_used_size);
2811 }
2812 }
2813 kthread_unuse_mm(mm);
2814 mmput(mm);
2815 }
2816
get_queue_ids(uint32_t num_queues,uint32_t * usr_queue_id_array)2817 static uint32_t *get_queue_ids(uint32_t num_queues, uint32_t *usr_queue_id_array)
2818 {
2819 size_t array_size = num_queues * sizeof(uint32_t);
2820
2821 if (!usr_queue_id_array)
2822 return NULL;
2823
2824 return memdup_user(usr_queue_id_array, array_size);
2825 }
2826
resume_queues(struct kfd_process * p,uint32_t num_queues,uint32_t * usr_queue_id_array)2827 int resume_queues(struct kfd_process *p,
2828 uint32_t num_queues,
2829 uint32_t *usr_queue_id_array)
2830 {
2831 uint32_t *queue_ids = NULL;
2832 int total_resumed = 0;
2833 int i;
2834
2835 if (usr_queue_id_array) {
2836 queue_ids = get_queue_ids(num_queues, usr_queue_id_array);
2837
2838 if (IS_ERR(queue_ids))
2839 return PTR_ERR(queue_ids);
2840
2841 /* mask all queues as invalid. unmask per successful request */
2842 q_array_invalidate(num_queues, queue_ids);
2843 }
2844
2845 for (i = 0; i < p->n_pdds; i++) {
2846 struct kfd_process_device *pdd = p->pdds[i];
2847 struct device_queue_manager *dqm = pdd->dev->dqm;
2848 struct qcm_process_device *qpd = &pdd->qpd;
2849 struct queue *q;
2850 int r, per_device_resumed = 0;
2851
2852 dqm_lock(dqm);
2853
2854 /* unmask queues that resume or already resumed as valid */
2855 list_for_each_entry(q, &qpd->queues_list, list) {
2856 int q_idx = QUEUE_NOT_FOUND;
2857
2858 if (queue_ids)
2859 q_idx = q_array_get_index(
2860 q->properties.queue_id,
2861 num_queues,
2862 queue_ids);
2863
2864 if (!queue_ids || q_idx != QUEUE_NOT_FOUND) {
2865 int err = resume_single_queue(dqm, &pdd->qpd, q);
2866
2867 if (queue_ids) {
2868 if (!err) {
2869 queue_ids[q_idx] &=
2870 ~KFD_DBG_QUEUE_INVALID_MASK;
2871 } else {
2872 queue_ids[q_idx] |=
2873 KFD_DBG_QUEUE_ERROR_MASK;
2874 break;
2875 }
2876 }
2877
2878 if (dqm->dev->kfd->shared_resources.enable_mes) {
2879 wake_up_all(&dqm->destroy_wait);
2880 if (!err)
2881 total_resumed++;
2882 } else {
2883 per_device_resumed++;
2884 }
2885 }
2886 }
2887
2888 if (!per_device_resumed) {
2889 dqm_unlock(dqm);
2890 continue;
2891 }
2892
2893 r = execute_queues_cpsch(dqm,
2894 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES,
2895 0,
2896 USE_DEFAULT_GRACE_PERIOD);
2897 if (r) {
2898 pr_err("Failed to resume process queues\n");
2899 if (queue_ids) {
2900 list_for_each_entry(q, &qpd->queues_list, list) {
2901 int q_idx = q_array_get_index(
2902 q->properties.queue_id,
2903 num_queues,
2904 queue_ids);
2905
2906 /* mask queue as error on resume fail */
2907 if (q_idx != QUEUE_NOT_FOUND)
2908 queue_ids[q_idx] |=
2909 KFD_DBG_QUEUE_ERROR_MASK;
2910 }
2911 }
2912 } else {
2913 wake_up_all(&dqm->destroy_wait);
2914 total_resumed += per_device_resumed;
2915 }
2916
2917 dqm_unlock(dqm);
2918 }
2919
2920 if (queue_ids) {
2921 if (copy_to_user((void __user *)usr_queue_id_array, queue_ids,
2922 num_queues * sizeof(uint32_t)))
2923 pr_err("copy_to_user failed on queue resume\n");
2924
2925 kfree(queue_ids);
2926 }
2927
2928 return total_resumed;
2929 }
2930
suspend_queues(struct kfd_process * p,uint32_t num_queues,uint32_t grace_period,uint64_t exception_clear_mask,uint32_t * usr_queue_id_array)2931 int suspend_queues(struct kfd_process *p,
2932 uint32_t num_queues,
2933 uint32_t grace_period,
2934 uint64_t exception_clear_mask,
2935 uint32_t *usr_queue_id_array)
2936 {
2937 uint32_t *queue_ids = get_queue_ids(num_queues, usr_queue_id_array);
2938 int total_suspended = 0;
2939 int i;
2940
2941 if (IS_ERR(queue_ids))
2942 return PTR_ERR(queue_ids);
2943
2944 /* mask all queues as invalid. umask on successful request */
2945 q_array_invalidate(num_queues, queue_ids);
2946
2947 for (i = 0; i < p->n_pdds; i++) {
2948 struct kfd_process_device *pdd = p->pdds[i];
2949 struct device_queue_manager *dqm = pdd->dev->dqm;
2950 struct qcm_process_device *qpd = &pdd->qpd;
2951 struct queue *q;
2952 int r, per_device_suspended = 0;
2953
2954 mutex_lock(&p->event_mutex);
2955 dqm_lock(dqm);
2956
2957 /* unmask queues that suspend or already suspended */
2958 list_for_each_entry(q, &qpd->queues_list, list) {
2959 int q_idx = q_array_get_index(q->properties.queue_id,
2960 num_queues,
2961 queue_ids);
2962
2963 if (q_idx != QUEUE_NOT_FOUND) {
2964 int err = suspend_single_queue(dqm, pdd, q);
2965 bool is_mes = dqm->dev->kfd->shared_resources.enable_mes;
2966
2967 if (!err) {
2968 queue_ids[q_idx] &= ~KFD_DBG_QUEUE_INVALID_MASK;
2969 if (exception_clear_mask && is_mes)
2970 q->properties.exception_status &=
2971 ~exception_clear_mask;
2972
2973 if (is_mes)
2974 total_suspended++;
2975 else
2976 per_device_suspended++;
2977 } else if (err != -EBUSY) {
2978 r = err;
2979 queue_ids[q_idx] |= KFD_DBG_QUEUE_ERROR_MASK;
2980 break;
2981 }
2982 }
2983 }
2984
2985 if (!per_device_suspended) {
2986 dqm_unlock(dqm);
2987 mutex_unlock(&p->event_mutex);
2988 if (total_suspended)
2989 amdgpu_amdkfd_debug_mem_fence(dqm->dev->adev);
2990 continue;
2991 }
2992
2993 r = execute_queues_cpsch(dqm,
2994 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0,
2995 grace_period);
2996
2997 if (r)
2998 pr_err("Failed to suspend process queues.\n");
2999 else
3000 total_suspended += per_device_suspended;
3001
3002 list_for_each_entry(q, &qpd->queues_list, list) {
3003 int q_idx = q_array_get_index(q->properties.queue_id,
3004 num_queues, queue_ids);
3005
3006 if (q_idx == QUEUE_NOT_FOUND)
3007 continue;
3008
3009 /* mask queue as error on suspend fail */
3010 if (r)
3011 queue_ids[q_idx] |= KFD_DBG_QUEUE_ERROR_MASK;
3012 else if (exception_clear_mask)
3013 q->properties.exception_status &=
3014 ~exception_clear_mask;
3015 }
3016
3017 dqm_unlock(dqm);
3018 mutex_unlock(&p->event_mutex);
3019 amdgpu_device_flush_hdp(dqm->dev->adev, NULL);
3020 }
3021
3022 if (total_suspended) {
3023 struct copy_context_work_handler_workarea copy_context_worker;
3024
3025 INIT_WORK_ONSTACK(
3026 ©_context_worker.copy_context_work,
3027 copy_context_work_handler);
3028
3029 copy_context_worker.p = p;
3030
3031 schedule_work(©_context_worker.copy_context_work);
3032
3033
3034 flush_work(©_context_worker.copy_context_work);
3035 destroy_work_on_stack(©_context_worker.copy_context_work);
3036 }
3037
3038 if (copy_to_user((void __user *)usr_queue_id_array, queue_ids,
3039 num_queues * sizeof(uint32_t)))
3040 pr_err("copy_to_user failed on queue suspend\n");
3041
3042 kfree(queue_ids);
3043
3044 return total_suspended;
3045 }
3046
set_queue_type_for_user(struct queue_properties * q_props)3047 static uint32_t set_queue_type_for_user(struct queue_properties *q_props)
3048 {
3049 switch (q_props->type) {
3050 case KFD_QUEUE_TYPE_COMPUTE:
3051 return q_props->format == KFD_QUEUE_FORMAT_PM4
3052 ? KFD_IOC_QUEUE_TYPE_COMPUTE
3053 : KFD_IOC_QUEUE_TYPE_COMPUTE_AQL;
3054 case KFD_QUEUE_TYPE_SDMA:
3055 return KFD_IOC_QUEUE_TYPE_SDMA;
3056 case KFD_QUEUE_TYPE_SDMA_XGMI:
3057 return KFD_IOC_QUEUE_TYPE_SDMA_XGMI;
3058 default:
3059 WARN_ONCE(true, "queue type not recognized!");
3060 return 0xffffffff;
3061 };
3062 }
3063
set_queue_snapshot_entry(struct queue * q,uint64_t exception_clear_mask,struct kfd_queue_snapshot_entry * qss_entry)3064 void set_queue_snapshot_entry(struct queue *q,
3065 uint64_t exception_clear_mask,
3066 struct kfd_queue_snapshot_entry *qss_entry)
3067 {
3068 qss_entry->ring_base_address = q->properties.queue_address;
3069 qss_entry->write_pointer_address = (uint64_t)q->properties.write_ptr;
3070 qss_entry->read_pointer_address = (uint64_t)q->properties.read_ptr;
3071 qss_entry->ctx_save_restore_address =
3072 q->properties.ctx_save_restore_area_address;
3073 qss_entry->ctx_save_restore_area_size =
3074 q->properties.ctx_save_restore_area_size;
3075 qss_entry->exception_status = q->properties.exception_status;
3076 qss_entry->queue_id = q->properties.queue_id;
3077 qss_entry->gpu_id = q->device->id;
3078 qss_entry->ring_size = (uint32_t)q->properties.queue_size;
3079 qss_entry->queue_type = set_queue_type_for_user(&q->properties);
3080 q->properties.exception_status &= ~exception_clear_mask;
3081 }
3082
debug_lock_and_unmap(struct device_queue_manager * dqm)3083 int debug_lock_and_unmap(struct device_queue_manager *dqm)
3084 {
3085 int r;
3086
3087 if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
3088 pr_err("Unsupported on sched_policy: %i\n", dqm->sched_policy);
3089 return -EINVAL;
3090 }
3091
3092 if (!kfd_dbg_is_per_vmid_supported(dqm->dev))
3093 return 0;
3094
3095 dqm_lock(dqm);
3096
3097 r = unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0, 0, false);
3098 if (r)
3099 dqm_unlock(dqm);
3100
3101 return r;
3102 }
3103
debug_map_and_unlock(struct device_queue_manager * dqm)3104 int debug_map_and_unlock(struct device_queue_manager *dqm)
3105 {
3106 int r;
3107
3108 if (dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
3109 pr_err("Unsupported on sched_policy: %i\n", dqm->sched_policy);
3110 return -EINVAL;
3111 }
3112
3113 if (!kfd_dbg_is_per_vmid_supported(dqm->dev))
3114 return 0;
3115
3116 r = map_queues_cpsch(dqm);
3117
3118 dqm_unlock(dqm);
3119
3120 return r;
3121 }
3122
debug_refresh_runlist(struct device_queue_manager * dqm)3123 int debug_refresh_runlist(struct device_queue_manager *dqm)
3124 {
3125 int r = debug_lock_and_unmap(dqm);
3126
3127 if (r)
3128 return r;
3129
3130 return debug_map_and_unlock(dqm);
3131 }
3132
3133 #if defined(CONFIG_DEBUG_FS)
3134
seq_reg_dump(struct seq_file * m,uint32_t (* dump)[2],uint32_t n_regs)3135 static void seq_reg_dump(struct seq_file *m,
3136 uint32_t (*dump)[2], uint32_t n_regs)
3137 {
3138 uint32_t i, count;
3139
3140 for (i = 0, count = 0; i < n_regs; i++) {
3141 if (count == 0 ||
3142 dump[i-1][0] + sizeof(uint32_t) != dump[i][0]) {
3143 seq_printf(m, "%s %08x: %08x",
3144 i ? "\n" : "",
3145 dump[i][0], dump[i][1]);
3146 count = 7;
3147 } else {
3148 seq_printf(m, " %08x", dump[i][1]);
3149 count--;
3150 }
3151 }
3152
3153 seq_puts(m, "\n");
3154 }
3155
dqm_debugfs_hqds(struct seq_file * m,void * data)3156 int dqm_debugfs_hqds(struct seq_file *m, void *data)
3157 {
3158 struct device_queue_manager *dqm = data;
3159 uint32_t xcc_mask = dqm->dev->xcc_mask;
3160 uint32_t (*dump)[2], n_regs;
3161 int pipe, queue;
3162 int r = 0, xcc_id;
3163 uint32_t sdma_engine_start;
3164
3165 if (!dqm->sched_running) {
3166 seq_puts(m, " Device is stopped\n");
3167 return 0;
3168 }
3169
3170 for_each_inst(xcc_id, xcc_mask) {
3171 r = dqm->dev->kfd2kgd->hqd_dump(dqm->dev->adev,
3172 KFD_CIK_HIQ_PIPE,
3173 KFD_CIK_HIQ_QUEUE, &dump,
3174 &n_regs, xcc_id);
3175 if (!r) {
3176 seq_printf(
3177 m,
3178 " Inst %d, HIQ on MEC %d Pipe %d Queue %d\n",
3179 xcc_id,
3180 KFD_CIK_HIQ_PIPE / get_pipes_per_mec(dqm) + 1,
3181 KFD_CIK_HIQ_PIPE % get_pipes_per_mec(dqm),
3182 KFD_CIK_HIQ_QUEUE);
3183 seq_reg_dump(m, dump, n_regs);
3184
3185 kfree(dump);
3186 }
3187
3188 for (pipe = 0; pipe < get_pipes_per_mec(dqm); pipe++) {
3189 int pipe_offset = pipe * get_queues_per_pipe(dqm);
3190
3191 for (queue = 0; queue < get_queues_per_pipe(dqm); queue++) {
3192 if (!test_bit(pipe_offset + queue,
3193 dqm->dev->kfd->shared_resources.cp_queue_bitmap))
3194 continue;
3195
3196 r = dqm->dev->kfd2kgd->hqd_dump(dqm->dev->adev,
3197 pipe, queue,
3198 &dump, &n_regs,
3199 xcc_id);
3200 if (r)
3201 break;
3202
3203 seq_printf(m,
3204 " Inst %d, CP Pipe %d, Queue %d\n",
3205 xcc_id, pipe, queue);
3206 seq_reg_dump(m, dump, n_regs);
3207
3208 kfree(dump);
3209 }
3210 }
3211 }
3212
3213 sdma_engine_start = dqm->dev->node_id * get_num_all_sdma_engines(dqm);
3214 for (pipe = sdma_engine_start;
3215 pipe < (sdma_engine_start + get_num_all_sdma_engines(dqm));
3216 pipe++) {
3217 for (queue = 0;
3218 queue < dqm->dev->kfd->device_info.num_sdma_queues_per_engine;
3219 queue++) {
3220 r = dqm->dev->kfd2kgd->hqd_sdma_dump(
3221 dqm->dev->adev, pipe, queue, &dump, &n_regs);
3222 if (r)
3223 break;
3224
3225 seq_printf(m, " SDMA Engine %d, RLC %d\n",
3226 pipe, queue);
3227 seq_reg_dump(m, dump, n_regs);
3228
3229 kfree(dump);
3230 }
3231 }
3232
3233 return r;
3234 }
3235
dqm_debugfs_hang_hws(struct device_queue_manager * dqm)3236 int dqm_debugfs_hang_hws(struct device_queue_manager *dqm)
3237 {
3238 int r = 0;
3239
3240 dqm_lock(dqm);
3241 r = pm_debugfs_hang_hws(&dqm->packet_mgr);
3242 if (r) {
3243 dqm_unlock(dqm);
3244 return r;
3245 }
3246 dqm->active_runlist = true;
3247 r = execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES,
3248 0, USE_DEFAULT_GRACE_PERIOD);
3249 dqm_unlock(dqm);
3250
3251 return r;
3252 }
3253
3254 #endif
3255