Linux 4.2.1
[linux/fpc-iii.git] / drivers / gpu / drm / amd / amdkfd / kfd_packet_manager.c
blob99b6d28a11c3e9030c734a58170ec4bb35bac56f
1 /*
2 * Copyright 2014 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
24 #include <linux/slab.h>
25 #include <linux/mutex.h>
26 #include "kfd_device_queue_manager.h"
27 #include "kfd_kernel_queue.h"
28 #include "kfd_priv.h"
29 #include "kfd_pm4_headers.h"
30 #include "kfd_pm4_opcodes.h"
32 static inline void inc_wptr(unsigned int *wptr, unsigned int increment_bytes,
33 unsigned int buffer_size_bytes)
35 unsigned int temp = *wptr + increment_bytes / sizeof(uint32_t);
37 BUG_ON((temp * sizeof(uint32_t)) > buffer_size_bytes);
38 *wptr = temp;
41 static unsigned int build_pm4_header(unsigned int opcode, size_t packet_size)
43 union PM4_MES_TYPE_3_HEADER header;
45 header.u32all = 0;
46 header.opcode = opcode;
47 header.count = packet_size/sizeof(uint32_t) - 2;
48 header.type = PM4_TYPE_3;
50 return header.u32all;
53 static void pm_calc_rlib_size(struct packet_manager *pm,
54 unsigned int *rlib_size,
55 bool *over_subscription)
57 unsigned int process_count, queue_count;
59 BUG_ON(!pm || !rlib_size || !over_subscription);
61 process_count = pm->dqm->processes_count;
62 queue_count = pm->dqm->queue_count;
64 /* check if there is over subscription*/
65 *over_subscription = false;
66 if ((process_count > 1) ||
67 queue_count > PIPE_PER_ME_CP_SCHEDULING * QUEUES_PER_PIPE) {
68 *over_subscription = true;
69 pr_debug("kfd: over subscribed runlist\n");
72 /* calculate run list ib allocation size */
73 *rlib_size = process_count * sizeof(struct pm4_map_process) +
74 queue_count * sizeof(struct pm4_map_queues);
77 * Increase the allocation size in case we need a chained run list
78 * when over subscription
80 if (*over_subscription)
81 *rlib_size += sizeof(struct pm4_runlist);
83 pr_debug("kfd: runlist ib size %d\n", *rlib_size);
86 static int pm_allocate_runlist_ib(struct packet_manager *pm,
87 unsigned int **rl_buffer,
88 uint64_t *rl_gpu_buffer,
89 unsigned int *rl_buffer_size,
90 bool *is_over_subscription)
92 int retval;
94 BUG_ON(!pm);
95 BUG_ON(pm->allocated == true);
96 BUG_ON(is_over_subscription == NULL);
98 pm_calc_rlib_size(pm, rl_buffer_size, is_over_subscription);
100 retval = kfd_gtt_sa_allocate(pm->dqm->dev, *rl_buffer_size,
101 &pm->ib_buffer_obj);
103 if (retval != 0) {
104 pr_err("kfd: failed to allocate runlist IB\n");
105 return retval;
108 *(void **)rl_buffer = pm->ib_buffer_obj->cpu_ptr;
109 *rl_gpu_buffer = pm->ib_buffer_obj->gpu_addr;
111 memset(*rl_buffer, 0, *rl_buffer_size);
112 pm->allocated = true;
113 return retval;
116 static int pm_create_runlist(struct packet_manager *pm, uint32_t *buffer,
117 uint64_t ib, size_t ib_size_in_dwords, bool chain)
119 struct pm4_runlist *packet;
121 BUG_ON(!pm || !buffer || !ib);
123 packet = (struct pm4_runlist *)buffer;
125 memset(buffer, 0, sizeof(struct pm4_runlist));
126 packet->header.u32all = build_pm4_header(IT_RUN_LIST,
127 sizeof(struct pm4_runlist));
129 packet->bitfields4.ib_size = ib_size_in_dwords;
130 packet->bitfields4.chain = chain ? 1 : 0;
131 packet->bitfields4.offload_polling = 0;
132 packet->bitfields4.valid = 1;
133 packet->ordinal2 = lower_32_bits(ib);
134 packet->bitfields3.ib_base_hi = upper_32_bits(ib);
136 return 0;
139 static int pm_create_map_process(struct packet_manager *pm, uint32_t *buffer,
140 struct qcm_process_device *qpd)
142 struct pm4_map_process *packet;
143 struct queue *cur;
144 uint32_t num_queues;
146 BUG_ON(!pm || !buffer || !qpd);
148 packet = (struct pm4_map_process *)buffer;
150 pr_debug("kfd: In func %s\n", __func__);
152 memset(buffer, 0, sizeof(struct pm4_map_process));
154 packet->header.u32all = build_pm4_header(IT_MAP_PROCESS,
155 sizeof(struct pm4_map_process));
156 packet->bitfields2.diq_enable = (qpd->is_debug) ? 1 : 0;
157 packet->bitfields2.process_quantum = 1;
158 packet->bitfields2.pasid = qpd->pqm->process->pasid;
159 packet->bitfields3.page_table_base = qpd->page_table_base;
160 packet->bitfields10.gds_size = qpd->gds_size;
161 packet->bitfields10.num_gws = qpd->num_gws;
162 packet->bitfields10.num_oac = qpd->num_oac;
163 num_queues = 0;
164 list_for_each_entry(cur, &qpd->queues_list, list)
165 num_queues++;
166 packet->bitfields10.num_queues = (qpd->is_debug) ? 0 : num_queues;
168 packet->sh_mem_config = qpd->sh_mem_config;
169 packet->sh_mem_bases = qpd->sh_mem_bases;
170 packet->sh_mem_ape1_base = qpd->sh_mem_ape1_base;
171 packet->sh_mem_ape1_limit = qpd->sh_mem_ape1_limit;
173 packet->gds_addr_lo = lower_32_bits(qpd->gds_context_area);
174 packet->gds_addr_hi = upper_32_bits(qpd->gds_context_area);
176 return 0;
179 static int pm_create_map_queue(struct packet_manager *pm, uint32_t *buffer,
180 struct queue *q, bool is_static)
182 struct pm4_map_queues *packet;
183 bool use_static = is_static;
185 BUG_ON(!pm || !buffer || !q);
187 pr_debug("kfd: In func %s\n", __func__);
189 packet = (struct pm4_map_queues *)buffer;
190 memset(buffer, 0, sizeof(struct pm4_map_queues));
192 packet->header.u32all = build_pm4_header(IT_MAP_QUEUES,
193 sizeof(struct pm4_map_queues));
194 packet->bitfields2.alloc_format =
195 alloc_format__mes_map_queues__one_per_pipe;
196 packet->bitfields2.num_queues = 1;
197 packet->bitfields2.queue_sel =
198 queue_sel__mes_map_queues__map_to_hws_determined_queue_slots;
200 packet->bitfields2.vidmem = (q->properties.is_interop) ?
201 vidmem__mes_map_queues__uses_video_memory :
202 vidmem__mes_map_queues__uses_no_video_memory;
204 switch (q->properties.type) {
205 case KFD_QUEUE_TYPE_COMPUTE:
206 case KFD_QUEUE_TYPE_DIQ:
207 packet->bitfields2.engine_sel =
208 engine_sel__mes_map_queues__compute;
209 break;
210 case KFD_QUEUE_TYPE_SDMA:
211 packet->bitfields2.engine_sel =
212 engine_sel__mes_map_queues__sdma0;
213 use_static = false; /* no static queues under SDMA */
214 break;
215 default:
216 BUG();
217 break;
220 packet->mes_map_queues_ordinals[0].bitfields3.doorbell_offset =
221 q->properties.doorbell_off;
223 packet->mes_map_queues_ordinals[0].bitfields3.is_static =
224 (use_static == true) ? 1 : 0;
226 packet->mes_map_queues_ordinals[0].mqd_addr_lo =
227 lower_32_bits(q->gart_mqd_addr);
229 packet->mes_map_queues_ordinals[0].mqd_addr_hi =
230 upper_32_bits(q->gart_mqd_addr);
232 packet->mes_map_queues_ordinals[0].wptr_addr_lo =
233 lower_32_bits((uint64_t)q->properties.write_ptr);
235 packet->mes_map_queues_ordinals[0].wptr_addr_hi =
236 upper_32_bits((uint64_t)q->properties.write_ptr);
238 return 0;
241 static int pm_create_runlist_ib(struct packet_manager *pm,
242 struct list_head *queues,
243 uint64_t *rl_gpu_addr,
244 size_t *rl_size_bytes)
246 unsigned int alloc_size_bytes;
247 unsigned int *rl_buffer, rl_wptr, i;
248 int retval, proccesses_mapped;
249 struct device_process_node *cur;
250 struct qcm_process_device *qpd;
251 struct queue *q;
252 struct kernel_queue *kq;
253 bool is_over_subscription;
255 BUG_ON(!pm || !queues || !rl_size_bytes || !rl_gpu_addr);
257 rl_wptr = retval = proccesses_mapped = 0;
259 retval = pm_allocate_runlist_ib(pm, &rl_buffer, rl_gpu_addr,
260 &alloc_size_bytes, &is_over_subscription);
261 if (retval != 0)
262 return retval;
264 *rl_size_bytes = alloc_size_bytes;
266 pr_debug("kfd: In func %s\n", __func__);
267 pr_debug("kfd: building runlist ib process count: %d queues count %d\n",
268 pm->dqm->processes_count, pm->dqm->queue_count);
270 /* build the run list ib packet */
271 list_for_each_entry(cur, queues, list) {
272 qpd = cur->qpd;
273 /* build map process packet */
274 if (proccesses_mapped >= pm->dqm->processes_count) {
275 pr_debug("kfd: not enough space left in runlist IB\n");
276 pm_release_ib(pm);
277 return -ENOMEM;
280 retval = pm_create_map_process(pm, &rl_buffer[rl_wptr], qpd);
281 if (retval != 0)
282 return retval;
284 proccesses_mapped++;
285 inc_wptr(&rl_wptr, sizeof(struct pm4_map_process),
286 alloc_size_bytes);
288 list_for_each_entry(kq, &qpd->priv_queue_list, list) {
289 if (kq->queue->properties.is_active != true)
290 continue;
292 pr_debug("kfd: static_queue, mapping kernel q %d, is debug status %d\n",
293 kq->queue->queue, qpd->is_debug);
295 retval = pm_create_map_queue(pm, &rl_buffer[rl_wptr],
296 kq->queue, qpd->is_debug);
297 if (retval != 0)
298 return retval;
300 inc_wptr(&rl_wptr,
301 sizeof(struct pm4_map_queues),
302 alloc_size_bytes);
305 list_for_each_entry(q, &qpd->queues_list, list) {
306 if (q->properties.is_active != true)
307 continue;
309 pr_debug("kfd: static_queue, mapping user queue %d, is debug status %d\n",
310 q->queue, qpd->is_debug);
312 retval = pm_create_map_queue(pm, &rl_buffer[rl_wptr],
313 q, qpd->is_debug);
315 if (retval != 0)
316 return retval;
318 inc_wptr(&rl_wptr,
319 sizeof(struct pm4_map_queues),
320 alloc_size_bytes);
324 pr_debug("kfd: finished map process and queues to runlist\n");
326 if (is_over_subscription)
327 pm_create_runlist(pm, &rl_buffer[rl_wptr], *rl_gpu_addr,
328 alloc_size_bytes / sizeof(uint32_t), true);
330 for (i = 0; i < alloc_size_bytes / sizeof(uint32_t); i++)
331 pr_debug("0x%2X ", rl_buffer[i]);
332 pr_debug("\n");
334 return 0;
337 int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm)
339 BUG_ON(!dqm);
341 pm->dqm = dqm;
342 mutex_init(&pm->lock);
343 pm->priv_queue = kernel_queue_init(dqm->dev, KFD_QUEUE_TYPE_HIQ);
344 if (pm->priv_queue == NULL) {
345 mutex_destroy(&pm->lock);
346 return -ENOMEM;
348 pm->allocated = false;
350 return 0;
353 void pm_uninit(struct packet_manager *pm)
355 BUG_ON(!pm);
357 mutex_destroy(&pm->lock);
358 kernel_queue_uninit(pm->priv_queue);
361 int pm_send_set_resources(struct packet_manager *pm,
362 struct scheduling_resources *res)
364 struct pm4_set_resources *packet;
366 BUG_ON(!pm || !res);
368 pr_debug("kfd: In func %s\n", __func__);
370 mutex_lock(&pm->lock);
371 pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue,
372 sizeof(*packet) / sizeof(uint32_t),
373 (unsigned int **)&packet);
374 if (packet == NULL) {
375 mutex_unlock(&pm->lock);
376 pr_err("kfd: failed to allocate buffer on kernel queue\n");
377 return -ENOMEM;
380 memset(packet, 0, sizeof(struct pm4_set_resources));
381 packet->header.u32all = build_pm4_header(IT_SET_RESOURCES,
382 sizeof(struct pm4_set_resources));
384 packet->bitfields2.queue_type =
385 queue_type__mes_set_resources__hsa_interface_queue_hiq;
386 packet->bitfields2.vmid_mask = res->vmid_mask;
387 packet->bitfields2.unmap_latency = KFD_UNMAP_LATENCY;
388 packet->bitfields7.oac_mask = res->oac_mask;
389 packet->bitfields8.gds_heap_base = res->gds_heap_base;
390 packet->bitfields8.gds_heap_size = res->gds_heap_size;
392 packet->gws_mask_lo = lower_32_bits(res->gws_mask);
393 packet->gws_mask_hi = upper_32_bits(res->gws_mask);
395 packet->queue_mask_lo = lower_32_bits(res->queue_mask);
396 packet->queue_mask_hi = upper_32_bits(res->queue_mask);
398 pm->priv_queue->ops.submit_packet(pm->priv_queue);
400 mutex_unlock(&pm->lock);
402 return 0;
405 int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues)
407 uint64_t rl_gpu_ib_addr;
408 uint32_t *rl_buffer;
409 size_t rl_ib_size, packet_size_dwords;
410 int retval;
412 BUG_ON(!pm || !dqm_queues);
414 retval = pm_create_runlist_ib(pm, dqm_queues, &rl_gpu_ib_addr,
415 &rl_ib_size);
416 if (retval != 0)
417 goto fail_create_runlist_ib;
419 pr_debug("kfd: runlist IB address: 0x%llX\n", rl_gpu_ib_addr);
421 packet_size_dwords = sizeof(struct pm4_runlist) / sizeof(uint32_t);
422 mutex_lock(&pm->lock);
424 retval = pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue,
425 packet_size_dwords, &rl_buffer);
426 if (retval != 0)
427 goto fail_acquire_packet_buffer;
429 retval = pm_create_runlist(pm, rl_buffer, rl_gpu_ib_addr,
430 rl_ib_size / sizeof(uint32_t), false);
431 if (retval != 0)
432 goto fail_create_runlist;
434 pm->priv_queue->ops.submit_packet(pm->priv_queue);
436 mutex_unlock(&pm->lock);
438 return retval;
440 fail_create_runlist:
441 pm->priv_queue->ops.rollback_packet(pm->priv_queue);
442 fail_acquire_packet_buffer:
443 mutex_unlock(&pm->lock);
444 fail_create_runlist_ib:
445 if (pm->allocated == true)
446 pm_release_ib(pm);
447 return retval;
450 int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
451 uint32_t fence_value)
453 int retval;
454 struct pm4_query_status *packet;
456 BUG_ON(!pm || !fence_address);
458 mutex_lock(&pm->lock);
459 retval = pm->priv_queue->ops.acquire_packet_buffer(
460 pm->priv_queue,
461 sizeof(struct pm4_query_status) / sizeof(uint32_t),
462 (unsigned int **)&packet);
463 if (retval != 0)
464 goto fail_acquire_packet_buffer;
466 packet->header.u32all = build_pm4_header(IT_QUERY_STATUS,
467 sizeof(struct pm4_query_status));
469 packet->bitfields2.context_id = 0;
470 packet->bitfields2.interrupt_sel =
471 interrupt_sel__mes_query_status__completion_status;
472 packet->bitfields2.command =
473 command__mes_query_status__fence_only_after_write_ack;
475 packet->addr_hi = upper_32_bits((uint64_t)fence_address);
476 packet->addr_lo = lower_32_bits((uint64_t)fence_address);
477 packet->data_hi = upper_32_bits((uint64_t)fence_value);
478 packet->data_lo = lower_32_bits((uint64_t)fence_value);
480 pm->priv_queue->ops.submit_packet(pm->priv_queue);
481 mutex_unlock(&pm->lock);
483 return 0;
485 fail_acquire_packet_buffer:
486 mutex_unlock(&pm->lock);
487 return retval;
490 int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type,
491 enum kfd_preempt_type_filter mode,
492 uint32_t filter_param, bool reset,
493 unsigned int sdma_engine)
495 int retval;
496 uint32_t *buffer;
497 struct pm4_unmap_queues *packet;
499 BUG_ON(!pm);
501 mutex_lock(&pm->lock);
502 retval = pm->priv_queue->ops.acquire_packet_buffer(
503 pm->priv_queue,
504 sizeof(struct pm4_unmap_queues) / sizeof(uint32_t),
505 &buffer);
506 if (retval != 0)
507 goto err_acquire_packet_buffer;
509 packet = (struct pm4_unmap_queues *)buffer;
510 memset(buffer, 0, sizeof(struct pm4_unmap_queues));
511 pr_debug("kfd: static_queue: unmapping queues: mode is %d , reset is %d , type is %d\n",
512 mode, reset, type);
513 packet->header.u32all = build_pm4_header(IT_UNMAP_QUEUES,
514 sizeof(struct pm4_unmap_queues));
515 switch (type) {
516 case KFD_QUEUE_TYPE_COMPUTE:
517 case KFD_QUEUE_TYPE_DIQ:
518 packet->bitfields2.engine_sel =
519 engine_sel__mes_unmap_queues__compute;
520 break;
521 case KFD_QUEUE_TYPE_SDMA:
522 packet->bitfields2.engine_sel =
523 engine_sel__mes_unmap_queues__sdma0 + sdma_engine;
524 break;
525 default:
526 BUG();
527 break;
530 if (reset)
531 packet->bitfields2.action =
532 action__mes_unmap_queues__reset_queues;
533 else
534 packet->bitfields2.action =
535 action__mes_unmap_queues__preempt_queues;
537 switch (mode) {
538 case KFD_PREEMPT_TYPE_FILTER_SINGLE_QUEUE:
539 packet->bitfields2.queue_sel =
540 queue_sel__mes_unmap_queues__perform_request_on_specified_queues;
541 packet->bitfields2.num_queues = 1;
542 packet->bitfields3b.doorbell_offset0 = filter_param;
543 break;
544 case KFD_PREEMPT_TYPE_FILTER_BY_PASID:
545 packet->bitfields2.queue_sel =
546 queue_sel__mes_unmap_queues__perform_request_on_pasid_queues;
547 packet->bitfields3a.pasid = filter_param;
548 break;
549 case KFD_PREEMPT_TYPE_FILTER_ALL_QUEUES:
550 packet->bitfields2.queue_sel =
551 queue_sel__mes_unmap_queues__perform_request_on_all_active_queues;
552 break;
553 case KFD_PREEMPT_TYPE_FILTER_DYNAMIC_QUEUES:
554 /* in this case, we do not preempt static queues */
555 packet->bitfields2.queue_sel =
556 queue_sel__mes_unmap_queues__perform_request_on_dynamic_queues_only;
557 break;
558 default:
559 BUG();
560 break;
563 pm->priv_queue->ops.submit_packet(pm->priv_queue);
565 mutex_unlock(&pm->lock);
566 return 0;
568 err_acquire_packet_buffer:
569 mutex_unlock(&pm->lock);
570 return retval;
573 void pm_release_ib(struct packet_manager *pm)
575 BUG_ON(!pm);
577 mutex_lock(&pm->lock);
578 if (pm->allocated) {
579 kfd_gtt_sa_free(pm->dqm->dev, pm->ib_buffer_obj);
580 pm->allocated = false;
582 mutex_unlock(&pm->lock);