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1/*
2 * Copyright 2014 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 */
25
26#include "amdgpu.h"
27#include "amdgpu_gfx.h"
28#include "amdgpu_rlc.h"
29
30/* delay 0.1 second to enable gfx off feature */
31#define GFX_OFF_DELAY_ENABLE msecs_to_jiffies(100)
32
33/*
34 * GPU GFX IP block helpers function.
35 */
36
37int amdgpu_gfx_mec_queue_to_bit(struct amdgpu_device *adev, int mec,
38 int pipe, int queue)
39{
40 int bit = 0;
41
42 bit += mec * adev->gfx.mec.num_pipe_per_mec
43 * adev->gfx.mec.num_queue_per_pipe;
44 bit += pipe * adev->gfx.mec.num_queue_per_pipe;
45 bit += queue;
46
47 return bit;
48}
49
50void amdgpu_gfx_bit_to_mec_queue(struct amdgpu_device *adev, int bit,
51 int *mec, int *pipe, int *queue)
52{
53 *queue = bit % adev->gfx.mec.num_queue_per_pipe;
54 *pipe = (bit / adev->gfx.mec.num_queue_per_pipe)
55 % adev->gfx.mec.num_pipe_per_mec;
56 *mec = (bit / adev->gfx.mec.num_queue_per_pipe)
57 / adev->gfx.mec.num_pipe_per_mec;
58
59}
60
61bool amdgpu_gfx_is_mec_queue_enabled(struct amdgpu_device *adev,
62 int mec, int pipe, int queue)
63{
64 return test_bit(amdgpu_gfx_mec_queue_to_bit(adev, mec, pipe, queue),
65 adev->gfx.mec.queue_bitmap);
66}
67
68int amdgpu_gfx_me_queue_to_bit(struct amdgpu_device *adev,
69 int me, int pipe, int queue)
70{
71 int bit = 0;
72
73 bit += me * adev->gfx.me.num_pipe_per_me
74 * adev->gfx.me.num_queue_per_pipe;
75 bit += pipe * adev->gfx.me.num_queue_per_pipe;
76 bit += queue;
77
78 return bit;
79}
80
81void amdgpu_gfx_bit_to_me_queue(struct amdgpu_device *adev, int bit,
82 int *me, int *pipe, int *queue)
83{
84 *queue = bit % adev->gfx.me.num_queue_per_pipe;
85 *pipe = (bit / adev->gfx.me.num_queue_per_pipe)
86 % adev->gfx.me.num_pipe_per_me;
87 *me = (bit / adev->gfx.me.num_queue_per_pipe)
88 / adev->gfx.me.num_pipe_per_me;
89}
90
91bool amdgpu_gfx_is_me_queue_enabled(struct amdgpu_device *adev,
92 int me, int pipe, int queue)
93{
94 return test_bit(amdgpu_gfx_me_queue_to_bit(adev, me, pipe, queue),
95 adev->gfx.me.queue_bitmap);
96}
97
98/**
99 * amdgpu_gfx_scratch_get - Allocate a scratch register
100 *
101 * @adev: amdgpu_device pointer
102 * @reg: scratch register mmio offset
103 *
104 * Allocate a CP scratch register for use by the driver (all asics).
105 * Returns 0 on success or -EINVAL on failure.
106 */
107int amdgpu_gfx_scratch_get(struct amdgpu_device *adev, uint32_t *reg)
108{
109 int i;
110
111 i = ffs(adev->gfx.scratch.free_mask);
112 if (i != 0 && i <= adev->gfx.scratch.num_reg) {
113 i--;
114 adev->gfx.scratch.free_mask &= ~(1u << i);
115 *reg = adev->gfx.scratch.reg_base + i;
116 return 0;
117 }
118 return -EINVAL;
119}
120
121/**
122 * amdgpu_gfx_scratch_free - Free a scratch register
123 *
124 * @adev: amdgpu_device pointer
125 * @reg: scratch register mmio offset
126 *
127 * Free a CP scratch register allocated for use by the driver (all asics)
128 */
129void amdgpu_gfx_scratch_free(struct amdgpu_device *adev, uint32_t reg)
130{
131 adev->gfx.scratch.free_mask |= 1u << (reg - adev->gfx.scratch.reg_base);
132}
133
134/**
135 * amdgpu_gfx_parse_disable_cu - Parse the disable_cu module parameter
136 *
137 * @mask: array in which the per-shader array disable masks will be stored
138 * @max_se: number of SEs
139 * @max_sh: number of SHs
140 *
141 * The bitmask of CUs to be disabled in the shader array determined by se and
142 * sh is stored in mask[se * max_sh + sh].
143 */
144void amdgpu_gfx_parse_disable_cu(unsigned *mask, unsigned max_se, unsigned max_sh)
145{
146 unsigned se, sh, cu;
147 const char *p;
148
149 memset(mask, 0, sizeof(*mask) * max_se * max_sh);
150
151 if (!amdgpu_disable_cu || !*amdgpu_disable_cu)
152 return;
153
154 p = amdgpu_disable_cu;
155 for (;;) {
156 char *next;
157 int ret = sscanf(p, "%u.%u.%u", &se, &sh, &cu);
158 if (ret < 3) {
159 DRM_ERROR("amdgpu: could not parse disable_cu\n");
160 return;
161 }
162
163 if (se < max_se && sh < max_sh && cu < 16) {
164 DRM_INFO("amdgpu: disabling CU %u.%u.%u\n", se, sh, cu);
165 mask[se * max_sh + sh] |= 1u << cu;
166 } else {
167 DRM_ERROR("amdgpu: disable_cu %u.%u.%u is out of range\n",
168 se, sh, cu);
169 }
170
171 next = strchr(p, ',');
172 if (!next)
173 break;
174 p = next + 1;
175 }
176}
177
178static bool amdgpu_gfx_is_multipipe_capable(struct amdgpu_device *adev)
179{
180 if (amdgpu_compute_multipipe != -1) {
181 DRM_INFO("amdgpu: forcing compute pipe policy %d\n",
182 amdgpu_compute_multipipe);
183 return amdgpu_compute_multipipe == 1;
184 }
185
186 /* FIXME: spreading the queues across pipes causes perf regressions
187 * on POLARIS11 compute workloads */
188 if (adev->asic_type == CHIP_POLARIS11)
189 return false;
190
191 return adev->gfx.mec.num_mec > 1;
192}
193
194void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev)
195{
196 int i, queue, pipe, mec;
197 bool multipipe_policy = amdgpu_gfx_is_multipipe_capable(adev);
198
199 /* policy for amdgpu compute queue ownership */
200 for (i = 0; i < AMDGPU_MAX_COMPUTE_QUEUES; ++i) {
201 queue = i % adev->gfx.mec.num_queue_per_pipe;
202 pipe = (i / adev->gfx.mec.num_queue_per_pipe)
203 % adev->gfx.mec.num_pipe_per_mec;
204 mec = (i / adev->gfx.mec.num_queue_per_pipe)
205 / adev->gfx.mec.num_pipe_per_mec;
206
207 /* we've run out of HW */
208 if (mec >= adev->gfx.mec.num_mec)
209 break;
210
211 if (multipipe_policy) {
212 /* policy: amdgpu owns the first two queues of the first MEC */
213 if (mec == 0 && queue < 2)
214 set_bit(i, adev->gfx.mec.queue_bitmap);
215 } else {
216 /* policy: amdgpu owns all queues in the first pipe */
217 if (mec == 0 && pipe == 0)
218 set_bit(i, adev->gfx.mec.queue_bitmap);
219 }
220 }
221
222 /* update the number of active compute rings */
223 adev->gfx.num_compute_rings =
224 bitmap_weight(adev->gfx.mec.queue_bitmap, AMDGPU_MAX_COMPUTE_QUEUES);
225
226 /* If you hit this case and edited the policy, you probably just
227 * need to increase AMDGPU_MAX_COMPUTE_RINGS */
228 if (WARN_ON(adev->gfx.num_compute_rings > AMDGPU_MAX_COMPUTE_RINGS))
229 adev->gfx.num_compute_rings = AMDGPU_MAX_COMPUTE_RINGS;
230}
231
232void amdgpu_gfx_graphics_queue_acquire(struct amdgpu_device *adev)
233{
234 int i, queue, pipe, me;
235
236 for (i = 0; i < AMDGPU_MAX_GFX_QUEUES; ++i) {
237 queue = i % adev->gfx.me.num_queue_per_pipe;
238 pipe = (i / adev->gfx.me.num_queue_per_pipe)
239 % adev->gfx.me.num_pipe_per_me;
240 me = (i / adev->gfx.me.num_queue_per_pipe)
241 / adev->gfx.me.num_pipe_per_me;
242
243 if (me >= adev->gfx.me.num_me)
244 break;
245 /* policy: amdgpu owns the first queue per pipe at this stage
246 * will extend to mulitple queues per pipe later */
247 if (me == 0 && queue < 1)
248 set_bit(i, adev->gfx.me.queue_bitmap);
249 }
250
251 /* update the number of active graphics rings */
252 adev->gfx.num_gfx_rings =
253 bitmap_weight(adev->gfx.me.queue_bitmap, AMDGPU_MAX_GFX_QUEUES);
254}
255
256static int amdgpu_gfx_kiq_acquire(struct amdgpu_device *adev,
257 struct amdgpu_ring *ring)
258{
259 int queue_bit;
260 int mec, pipe, queue;
261
262 queue_bit = adev->gfx.mec.num_mec
263 * adev->gfx.mec.num_pipe_per_mec
264 * adev->gfx.mec.num_queue_per_pipe;
265
266 while (queue_bit-- >= 0) {
267 if (test_bit(queue_bit, adev->gfx.mec.queue_bitmap))
268 continue;
269
270 amdgpu_gfx_bit_to_mec_queue(adev, queue_bit, &mec, &pipe, &queue);
271
272 /*
273 * 1. Using pipes 2/3 from MEC 2 seems cause problems.
274 * 2. It must use queue id 0, because CGPG_IDLE/SAVE/LOAD/RUN
275 * only can be issued on queue 0.
276 */
277 if ((mec == 1 && pipe > 1) || queue != 0)
278 continue;
279
280 ring->me = mec + 1;
281 ring->pipe = pipe;
282 ring->queue = queue;
283
284 return 0;
285 }
286
287 dev_err(adev->dev, "Failed to find a queue for KIQ\n");
288 return -EINVAL;
289}
290
291int amdgpu_gfx_kiq_init_ring(struct amdgpu_device *adev,
292 struct amdgpu_ring *ring,
293 struct amdgpu_irq_src *irq)
294{
295 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
296 int r = 0;
297
298 spin_lock_init(&kiq->ring_lock);
299
300 r = amdgpu_device_wb_get(adev, &adev->virt.reg_val_offs);
301 if (r)
302 return r;
303
304 ring->adev = NULL;
305 ring->ring_obj = NULL;
306 ring->use_doorbell = true;
307 ring->doorbell_index = adev->doorbell_index.kiq;
308
309 r = amdgpu_gfx_kiq_acquire(adev, ring);
310 if (r)
311 return r;
312
313 ring->eop_gpu_addr = kiq->eop_gpu_addr;
314 sprintf(ring->name, "kiq_%d.%d.%d", ring->me, ring->pipe, ring->queue);
315 r = amdgpu_ring_init(adev, ring, 1024,
316 irq, AMDGPU_CP_KIQ_IRQ_DRIVER0);
317 if (r)
318 dev_warn(adev->dev, "(%d) failed to init kiq ring\n", r);
319
320 return r;
321}
322
323void amdgpu_gfx_kiq_free_ring(struct amdgpu_ring *ring,
324 struct amdgpu_irq_src *irq)
325{
326 amdgpu_device_wb_free(ring->adev, ring->adev->virt.reg_val_offs);
327 amdgpu_ring_fini(ring);
328}
329
330void amdgpu_gfx_kiq_fini(struct amdgpu_device *adev)
331{
332 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
333
334 amdgpu_bo_free_kernel(&kiq->eop_obj, &kiq->eop_gpu_addr, NULL);
335}
336
337int amdgpu_gfx_kiq_init(struct amdgpu_device *adev,
338 unsigned hpd_size)
339{
340 int r;
341 u32 *hpd;
342 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
343
344 r = amdgpu_bo_create_kernel(adev, hpd_size, PAGE_SIZE,
345 AMDGPU_GEM_DOMAIN_GTT, &kiq->eop_obj,
346 &kiq->eop_gpu_addr, (void **)&hpd);
347 if (r) {
348 dev_warn(adev->dev, "failed to create KIQ bo (%d).\n", r);
349 return r;
350 }
351
352 memset(hpd, 0, hpd_size);
353
354 r = amdgpu_bo_reserve(kiq->eop_obj, true);
355 if (unlikely(r != 0))
356 dev_warn(adev->dev, "(%d) reserve kiq eop bo failed\n", r);
357 amdgpu_bo_kunmap(kiq->eop_obj);
358 amdgpu_bo_unreserve(kiq->eop_obj);
359
360 return 0;
361}
362
363/* create MQD for each compute/gfx queue */
364int amdgpu_gfx_mqd_sw_init(struct amdgpu_device *adev,
365 unsigned mqd_size)
366{
367 struct amdgpu_ring *ring = NULL;
368 int r, i;
369
370 /* create MQD for KIQ */
371 ring = &adev->gfx.kiq.ring;
372 if (!ring->mqd_obj) {
373 /* originaly the KIQ MQD is put in GTT domain, but for SRIOV VRAM domain is a must
374 * otherwise hypervisor trigger SAVE_VF fail after driver unloaded which mean MQD
375 * deallocated and gart_unbind, to strict diverage we decide to use VRAM domain for
376 * KIQ MQD no matter SRIOV or Bare-metal
377 */
378 r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
379 AMDGPU_GEM_DOMAIN_VRAM, &ring->mqd_obj,
380 &ring->mqd_gpu_addr, &ring->mqd_ptr);
381 if (r) {
382 dev_warn(adev->dev, "failed to create ring mqd ob (%d)", r);
383 return r;
384 }
385
386 /* prepare MQD backup */
387 adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS] = kmalloc(mqd_size, GFP_KERNEL);
388 if (!adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS])
389 dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
390 }
391
392 if (adev->asic_type >= CHIP_NAVI10 && amdgpu_async_gfx_ring) {
393 /* create MQD for each KGQ */
394 for (i = 0; i < adev->gfx.num_gfx_rings; i++) {
395 ring = &adev->gfx.gfx_ring[i];
396 if (!ring->mqd_obj) {
397 r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
398 AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
399 &ring->mqd_gpu_addr, &ring->mqd_ptr);
400 if (r) {
401 dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r);
402 return r;
403 }
404
405 /* prepare MQD backup */
406 adev->gfx.me.mqd_backup[i] = kmalloc(mqd_size, GFP_KERNEL);
407 if (!adev->gfx.me.mqd_backup[i])
408 dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
409 }
410 }
411 }
412
413 /* create MQD for each KCQ */
414 for (i = 0; i < adev->gfx.num_compute_rings; i++) {
415 ring = &adev->gfx.compute_ring[i];
416 if (!ring->mqd_obj) {
417 r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
418 AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
419 &ring->mqd_gpu_addr, &ring->mqd_ptr);
420 if (r) {
421 dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r);
422 return r;
423 }
424
425 /* prepare MQD backup */
426 adev->gfx.mec.mqd_backup[i] = kmalloc(mqd_size, GFP_KERNEL);
427 if (!adev->gfx.mec.mqd_backup[i])
428 dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
429 }
430 }
431
432 return 0;
433}
434
435void amdgpu_gfx_mqd_sw_fini(struct amdgpu_device *adev)
436{
437 struct amdgpu_ring *ring = NULL;
438 int i;
439
440 if (adev->asic_type >= CHIP_NAVI10 && amdgpu_async_gfx_ring) {
441 for (i = 0; i < adev->gfx.num_gfx_rings; i++) {
442 ring = &adev->gfx.gfx_ring[i];
443 kfree(adev->gfx.me.mqd_backup[i]);
444 amdgpu_bo_free_kernel(&ring->mqd_obj,
445 &ring->mqd_gpu_addr,
446 &ring->mqd_ptr);
447 }
448 }
449
450 for (i = 0; i < adev->gfx.num_compute_rings; i++) {
451 ring = &adev->gfx.compute_ring[i];
452 kfree(adev->gfx.mec.mqd_backup[i]);
453 amdgpu_bo_free_kernel(&ring->mqd_obj,
454 &ring->mqd_gpu_addr,
455 &ring->mqd_ptr);
456 }
457
458 ring = &adev->gfx.kiq.ring;
459 if (adev->asic_type >= CHIP_NAVI10 && amdgpu_async_gfx_ring)
460 kfree(adev->gfx.me.mqd_backup[AMDGPU_MAX_GFX_RINGS]);
461 kfree(adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS]);
462 amdgpu_bo_free_kernel(&ring->mqd_obj,
463 &ring->mqd_gpu_addr,
464 &ring->mqd_ptr);
465}
466
467int amdgpu_gfx_disable_kcq(struct amdgpu_device *adev)
468{
469 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
470 struct amdgpu_ring *kiq_ring = &kiq->ring;
471 int i;
472
473 if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues)
474 return -EINVAL;
475
476 if (amdgpu_ring_alloc(kiq_ring, kiq->pmf->unmap_queues_size *
477 adev->gfx.num_compute_rings))
478 return -ENOMEM;
479
480 for (i = 0; i < adev->gfx.num_compute_rings; i++)
481 kiq->pmf->kiq_unmap_queues(kiq_ring, &adev->gfx.compute_ring[i],
482 RESET_QUEUES, 0, 0);
483
484 return amdgpu_ring_test_ring(kiq_ring);
485}
486
487int amdgpu_gfx_enable_kcq(struct amdgpu_device *adev)
488{
489 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
490 struct amdgpu_ring *kiq_ring = &adev->gfx.kiq.ring;
491 uint64_t queue_mask = 0;
492 int r, i;
493
494 if (!kiq->pmf || !kiq->pmf->kiq_map_queues || !kiq->pmf->kiq_set_resources)
495 return -EINVAL;
496
497 for (i = 0; i < AMDGPU_MAX_COMPUTE_QUEUES; ++i) {
498 if (!test_bit(i, adev->gfx.mec.queue_bitmap))
499 continue;
500
501 /* This situation may be hit in the future if a new HW
502 * generation exposes more than 64 queues. If so, the
503 * definition of queue_mask needs updating */
504 if (WARN_ON(i > (sizeof(queue_mask)*8))) {
505 DRM_ERROR("Invalid KCQ enabled: %d\n", i);
506 break;
507 }
508
509 queue_mask |= (1ull << i);
510 }
511
512 DRM_INFO("kiq ring mec %d pipe %d q %d\n", kiq_ring->me, kiq_ring->pipe,
513 kiq_ring->queue);
514
515 r = amdgpu_ring_alloc(kiq_ring, kiq->pmf->map_queues_size *
516 adev->gfx.num_compute_rings +
517 kiq->pmf->set_resources_size);
518 if (r) {
519 DRM_ERROR("Failed to lock KIQ (%d).\n", r);
520 return r;
521 }
522
523 kiq->pmf->kiq_set_resources(kiq_ring, queue_mask);
524 for (i = 0; i < adev->gfx.num_compute_rings; i++)
525 kiq->pmf->kiq_map_queues(kiq_ring, &adev->gfx.compute_ring[i]);
526
527 r = amdgpu_ring_test_helper(kiq_ring);
528 if (r)
529 DRM_ERROR("KCQ enable failed\n");
530
531 return r;
532}
533
534/* amdgpu_gfx_off_ctrl - Handle gfx off feature enable/disable
535 *
536 * @adev: amdgpu_device pointer
537 * @bool enable true: enable gfx off feature, false: disable gfx off feature
538 *
539 * 1. gfx off feature will be enabled by gfx ip after gfx cg gp enabled.
540 * 2. other client can send request to disable gfx off feature, the request should be honored.
541 * 3. other client can cancel their request of disable gfx off feature
542 * 4. other client should not send request to enable gfx off feature before disable gfx off feature.
543 */
544
545void amdgpu_gfx_off_ctrl(struct amdgpu_device *adev, bool enable)
546{
547 if (!(adev->pm.pp_feature & PP_GFXOFF_MASK))
548 return;
549
550 if (!is_support_sw_smu(adev) &&
551 (!adev->powerplay.pp_funcs ||
552 !adev->powerplay.pp_funcs->set_powergating_by_smu))
553 return;
554
555
556 mutex_lock(&adev->gfx.gfx_off_mutex);
557
558 if (!enable)
559 adev->gfx.gfx_off_req_count++;
560 else if (adev->gfx.gfx_off_req_count > 0)
561 adev->gfx.gfx_off_req_count--;
562
563 if (enable && !adev->gfx.gfx_off_state && !adev->gfx.gfx_off_req_count) {
564 schedule_delayed_work(&adev->gfx.gfx_off_delay_work, GFX_OFF_DELAY_ENABLE);
565 } else if (!enable && adev->gfx.gfx_off_state) {
566 if (!amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_GFX, false))
567 adev->gfx.gfx_off_state = false;
568 }
569
570 mutex_unlock(&adev->gfx.gfx_off_mutex);
571}
1/*
2 * Copyright 2014 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 */
25
26#include "amdgpu.h"
27#include "amdgpu_gfx.h"
28#include "amdgpu_rlc.h"
29#include "amdgpu_ras.h"
30
31/* delay 0.1 second to enable gfx off feature */
32#define GFX_OFF_DELAY_ENABLE msecs_to_jiffies(100)
33
34#define GFX_OFF_NO_DELAY 0
35
36/*
37 * GPU GFX IP block helpers function.
38 */
39
40int amdgpu_gfx_mec_queue_to_bit(struct amdgpu_device *adev, int mec,
41 int pipe, int queue)
42{
43 int bit = 0;
44
45 bit += mec * adev->gfx.mec.num_pipe_per_mec
46 * adev->gfx.mec.num_queue_per_pipe;
47 bit += pipe * adev->gfx.mec.num_queue_per_pipe;
48 bit += queue;
49
50 return bit;
51}
52
53void amdgpu_queue_mask_bit_to_mec_queue(struct amdgpu_device *adev, int bit,
54 int *mec, int *pipe, int *queue)
55{
56 *queue = bit % adev->gfx.mec.num_queue_per_pipe;
57 *pipe = (bit / adev->gfx.mec.num_queue_per_pipe)
58 % adev->gfx.mec.num_pipe_per_mec;
59 *mec = (bit / adev->gfx.mec.num_queue_per_pipe)
60 / adev->gfx.mec.num_pipe_per_mec;
61
62}
63
64bool amdgpu_gfx_is_mec_queue_enabled(struct amdgpu_device *adev,
65 int mec, int pipe, int queue)
66{
67 return test_bit(amdgpu_gfx_mec_queue_to_bit(adev, mec, pipe, queue),
68 adev->gfx.mec.queue_bitmap);
69}
70
71int amdgpu_gfx_me_queue_to_bit(struct amdgpu_device *adev,
72 int me, int pipe, int queue)
73{
74 int bit = 0;
75
76 bit += me * adev->gfx.me.num_pipe_per_me
77 * adev->gfx.me.num_queue_per_pipe;
78 bit += pipe * adev->gfx.me.num_queue_per_pipe;
79 bit += queue;
80
81 return bit;
82}
83
84void amdgpu_gfx_bit_to_me_queue(struct amdgpu_device *adev, int bit,
85 int *me, int *pipe, int *queue)
86{
87 *queue = bit % adev->gfx.me.num_queue_per_pipe;
88 *pipe = (bit / adev->gfx.me.num_queue_per_pipe)
89 % adev->gfx.me.num_pipe_per_me;
90 *me = (bit / adev->gfx.me.num_queue_per_pipe)
91 / adev->gfx.me.num_pipe_per_me;
92}
93
94bool amdgpu_gfx_is_me_queue_enabled(struct amdgpu_device *adev,
95 int me, int pipe, int queue)
96{
97 return test_bit(amdgpu_gfx_me_queue_to_bit(adev, me, pipe, queue),
98 adev->gfx.me.queue_bitmap);
99}
100
101/**
102 * amdgpu_gfx_scratch_get - Allocate a scratch register
103 *
104 * @adev: amdgpu_device pointer
105 * @reg: scratch register mmio offset
106 *
107 * Allocate a CP scratch register for use by the driver (all asics).
108 * Returns 0 on success or -EINVAL on failure.
109 */
110int amdgpu_gfx_scratch_get(struct amdgpu_device *adev, uint32_t *reg)
111{
112 int i;
113
114 i = ffs(adev->gfx.scratch.free_mask);
115 if (i != 0 && i <= adev->gfx.scratch.num_reg) {
116 i--;
117 adev->gfx.scratch.free_mask &= ~(1u << i);
118 *reg = adev->gfx.scratch.reg_base + i;
119 return 0;
120 }
121 return -EINVAL;
122}
123
124/**
125 * amdgpu_gfx_scratch_free - Free a scratch register
126 *
127 * @adev: amdgpu_device pointer
128 * @reg: scratch register mmio offset
129 *
130 * Free a CP scratch register allocated for use by the driver (all asics)
131 */
132void amdgpu_gfx_scratch_free(struct amdgpu_device *adev, uint32_t reg)
133{
134 adev->gfx.scratch.free_mask |= 1u << (reg - adev->gfx.scratch.reg_base);
135}
136
137/**
138 * amdgpu_gfx_parse_disable_cu - Parse the disable_cu module parameter
139 *
140 * @mask: array in which the per-shader array disable masks will be stored
141 * @max_se: number of SEs
142 * @max_sh: number of SHs
143 *
144 * The bitmask of CUs to be disabled in the shader array determined by se and
145 * sh is stored in mask[se * max_sh + sh].
146 */
147void amdgpu_gfx_parse_disable_cu(unsigned *mask, unsigned max_se, unsigned max_sh)
148{
149 unsigned se, sh, cu;
150 const char *p;
151
152 memset(mask, 0, sizeof(*mask) * max_se * max_sh);
153
154 if (!amdgpu_disable_cu || !*amdgpu_disable_cu)
155 return;
156
157 p = amdgpu_disable_cu;
158 for (;;) {
159 char *next;
160 int ret = sscanf(p, "%u.%u.%u", &se, &sh, &cu);
161 if (ret < 3) {
162 DRM_ERROR("amdgpu: could not parse disable_cu\n");
163 return;
164 }
165
166 if (se < max_se && sh < max_sh && cu < 16) {
167 DRM_INFO("amdgpu: disabling CU %u.%u.%u\n", se, sh, cu);
168 mask[se * max_sh + sh] |= 1u << cu;
169 } else {
170 DRM_ERROR("amdgpu: disable_cu %u.%u.%u is out of range\n",
171 se, sh, cu);
172 }
173
174 next = strchr(p, ',');
175 if (!next)
176 break;
177 p = next + 1;
178 }
179}
180
181static bool amdgpu_gfx_is_multipipe_capable(struct amdgpu_device *adev)
182{
183 if (amdgpu_compute_multipipe != -1) {
184 DRM_INFO("amdgpu: forcing compute pipe policy %d\n",
185 amdgpu_compute_multipipe);
186 return amdgpu_compute_multipipe == 1;
187 }
188
189 /* FIXME: spreading the queues across pipes causes perf regressions
190 * on POLARIS11 compute workloads */
191 if (adev->asic_type == CHIP_POLARIS11)
192 return false;
193
194 return adev->gfx.mec.num_mec > 1;
195}
196
197bool amdgpu_gfx_is_high_priority_compute_queue(struct amdgpu_device *adev,
198 struct amdgpu_ring *ring)
199{
200 /* Policy: use 1st queue as high priority compute queue if we
201 * have more than one compute queue.
202 */
203 if (adev->gfx.num_compute_rings > 1 &&
204 ring == &adev->gfx.compute_ring[0])
205 return true;
206
207 return false;
208}
209
210void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev)
211{
212 int i, queue, pipe;
213 bool multipipe_policy = amdgpu_gfx_is_multipipe_capable(adev);
214 int max_queues_per_mec = min(adev->gfx.mec.num_pipe_per_mec *
215 adev->gfx.mec.num_queue_per_pipe,
216 adev->gfx.num_compute_rings);
217
218 if (multipipe_policy) {
219 /* policy: make queues evenly cross all pipes on MEC1 only */
220 for (i = 0; i < max_queues_per_mec; i++) {
221 pipe = i % adev->gfx.mec.num_pipe_per_mec;
222 queue = (i / adev->gfx.mec.num_pipe_per_mec) %
223 adev->gfx.mec.num_queue_per_pipe;
224
225 set_bit(pipe * adev->gfx.mec.num_queue_per_pipe + queue,
226 adev->gfx.mec.queue_bitmap);
227 }
228 } else {
229 /* policy: amdgpu owns all queues in the given pipe */
230 for (i = 0; i < max_queues_per_mec; ++i)
231 set_bit(i, adev->gfx.mec.queue_bitmap);
232 }
233
234 dev_dbg(adev->dev, "mec queue bitmap weight=%d\n", bitmap_weight(adev->gfx.mec.queue_bitmap, AMDGPU_MAX_COMPUTE_QUEUES));
235}
236
237void amdgpu_gfx_graphics_queue_acquire(struct amdgpu_device *adev)
238{
239 int i, queue, me;
240
241 for (i = 0; i < AMDGPU_MAX_GFX_QUEUES; ++i) {
242 queue = i % adev->gfx.me.num_queue_per_pipe;
243 me = (i / adev->gfx.me.num_queue_per_pipe)
244 / adev->gfx.me.num_pipe_per_me;
245
246 if (me >= adev->gfx.me.num_me)
247 break;
248 /* policy: amdgpu owns the first queue per pipe at this stage
249 * will extend to mulitple queues per pipe later */
250 if (me == 0 && queue < 1)
251 set_bit(i, adev->gfx.me.queue_bitmap);
252 }
253
254 /* update the number of active graphics rings */
255 adev->gfx.num_gfx_rings =
256 bitmap_weight(adev->gfx.me.queue_bitmap, AMDGPU_MAX_GFX_QUEUES);
257}
258
259static int amdgpu_gfx_kiq_acquire(struct amdgpu_device *adev,
260 struct amdgpu_ring *ring)
261{
262 int queue_bit;
263 int mec, pipe, queue;
264
265 queue_bit = adev->gfx.mec.num_mec
266 * adev->gfx.mec.num_pipe_per_mec
267 * adev->gfx.mec.num_queue_per_pipe;
268
269 while (queue_bit-- >= 0) {
270 if (test_bit(queue_bit, adev->gfx.mec.queue_bitmap))
271 continue;
272
273 amdgpu_queue_mask_bit_to_mec_queue(adev, queue_bit, &mec, &pipe, &queue);
274
275 /*
276 * 1. Using pipes 2/3 from MEC 2 seems cause problems.
277 * 2. It must use queue id 0, because CGPG_IDLE/SAVE/LOAD/RUN
278 * only can be issued on queue 0.
279 */
280 if ((mec == 1 && pipe > 1) || queue != 0)
281 continue;
282
283 ring->me = mec + 1;
284 ring->pipe = pipe;
285 ring->queue = queue;
286
287 return 0;
288 }
289
290 dev_err(adev->dev, "Failed to find a queue for KIQ\n");
291 return -EINVAL;
292}
293
294int amdgpu_gfx_kiq_init_ring(struct amdgpu_device *adev,
295 struct amdgpu_ring *ring,
296 struct amdgpu_irq_src *irq)
297{
298 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
299 int r = 0;
300
301 spin_lock_init(&kiq->ring_lock);
302
303 ring->adev = NULL;
304 ring->ring_obj = NULL;
305 ring->use_doorbell = true;
306 ring->doorbell_index = adev->doorbell_index.kiq;
307
308 r = amdgpu_gfx_kiq_acquire(adev, ring);
309 if (r)
310 return r;
311
312 ring->eop_gpu_addr = kiq->eop_gpu_addr;
313 ring->no_scheduler = true;
314 sprintf(ring->name, "kiq_%d.%d.%d", ring->me, ring->pipe, ring->queue);
315 r = amdgpu_ring_init(adev, ring, 1024, irq, AMDGPU_CP_KIQ_IRQ_DRIVER0,
316 AMDGPU_RING_PRIO_DEFAULT, NULL);
317 if (r)
318 dev_warn(adev->dev, "(%d) failed to init kiq ring\n", r);
319
320 return r;
321}
322
323void amdgpu_gfx_kiq_free_ring(struct amdgpu_ring *ring)
324{
325 amdgpu_ring_fini(ring);
326}
327
328void amdgpu_gfx_kiq_fini(struct amdgpu_device *adev)
329{
330 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
331
332 amdgpu_bo_free_kernel(&kiq->eop_obj, &kiq->eop_gpu_addr, NULL);
333}
334
335int amdgpu_gfx_kiq_init(struct amdgpu_device *adev,
336 unsigned hpd_size)
337{
338 int r;
339 u32 *hpd;
340 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
341
342 r = amdgpu_bo_create_kernel(adev, hpd_size, PAGE_SIZE,
343 AMDGPU_GEM_DOMAIN_GTT, &kiq->eop_obj,
344 &kiq->eop_gpu_addr, (void **)&hpd);
345 if (r) {
346 dev_warn(adev->dev, "failed to create KIQ bo (%d).\n", r);
347 return r;
348 }
349
350 memset(hpd, 0, hpd_size);
351
352 r = amdgpu_bo_reserve(kiq->eop_obj, true);
353 if (unlikely(r != 0))
354 dev_warn(adev->dev, "(%d) reserve kiq eop bo failed\n", r);
355 amdgpu_bo_kunmap(kiq->eop_obj);
356 amdgpu_bo_unreserve(kiq->eop_obj);
357
358 return 0;
359}
360
361/* create MQD for each compute/gfx queue */
362int amdgpu_gfx_mqd_sw_init(struct amdgpu_device *adev,
363 unsigned mqd_size)
364{
365 struct amdgpu_ring *ring = NULL;
366 int r, i;
367
368 /* create MQD for KIQ */
369 ring = &adev->gfx.kiq.ring;
370 if (!ring->mqd_obj) {
371 /* originaly the KIQ MQD is put in GTT domain, but for SRIOV VRAM domain is a must
372 * otherwise hypervisor trigger SAVE_VF fail after driver unloaded which mean MQD
373 * deallocated and gart_unbind, to strict diverage we decide to use VRAM domain for
374 * KIQ MQD no matter SRIOV or Bare-metal
375 */
376 r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
377 AMDGPU_GEM_DOMAIN_VRAM, &ring->mqd_obj,
378 &ring->mqd_gpu_addr, &ring->mqd_ptr);
379 if (r) {
380 dev_warn(adev->dev, "failed to create ring mqd ob (%d)", r);
381 return r;
382 }
383
384 /* prepare MQD backup */
385 adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS] = kmalloc(mqd_size, GFP_KERNEL);
386 if (!adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS])
387 dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
388 }
389
390 if (adev->asic_type >= CHIP_NAVI10 && amdgpu_async_gfx_ring) {
391 /* create MQD for each KGQ */
392 for (i = 0; i < adev->gfx.num_gfx_rings; i++) {
393 ring = &adev->gfx.gfx_ring[i];
394 if (!ring->mqd_obj) {
395 r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
396 AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
397 &ring->mqd_gpu_addr, &ring->mqd_ptr);
398 if (r) {
399 dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r);
400 return r;
401 }
402
403 /* prepare MQD backup */
404 adev->gfx.me.mqd_backup[i] = kmalloc(mqd_size, GFP_KERNEL);
405 if (!adev->gfx.me.mqd_backup[i])
406 dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
407 }
408 }
409 }
410
411 /* create MQD for each KCQ */
412 for (i = 0; i < adev->gfx.num_compute_rings; i++) {
413 ring = &adev->gfx.compute_ring[i];
414 if (!ring->mqd_obj) {
415 r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
416 AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
417 &ring->mqd_gpu_addr, &ring->mqd_ptr);
418 if (r) {
419 dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r);
420 return r;
421 }
422
423 /* prepare MQD backup */
424 adev->gfx.mec.mqd_backup[i] = kmalloc(mqd_size, GFP_KERNEL);
425 if (!adev->gfx.mec.mqd_backup[i])
426 dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
427 }
428 }
429
430 return 0;
431}
432
433void amdgpu_gfx_mqd_sw_fini(struct amdgpu_device *adev)
434{
435 struct amdgpu_ring *ring = NULL;
436 int i;
437
438 if (adev->asic_type >= CHIP_NAVI10 && amdgpu_async_gfx_ring) {
439 for (i = 0; i < adev->gfx.num_gfx_rings; i++) {
440 ring = &adev->gfx.gfx_ring[i];
441 kfree(adev->gfx.me.mqd_backup[i]);
442 amdgpu_bo_free_kernel(&ring->mqd_obj,
443 &ring->mqd_gpu_addr,
444 &ring->mqd_ptr);
445 }
446 }
447
448 for (i = 0; i < adev->gfx.num_compute_rings; i++) {
449 ring = &adev->gfx.compute_ring[i];
450 kfree(adev->gfx.mec.mqd_backup[i]);
451 amdgpu_bo_free_kernel(&ring->mqd_obj,
452 &ring->mqd_gpu_addr,
453 &ring->mqd_ptr);
454 }
455
456 ring = &adev->gfx.kiq.ring;
457 kfree(adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS]);
458 amdgpu_bo_free_kernel(&ring->mqd_obj,
459 &ring->mqd_gpu_addr,
460 &ring->mqd_ptr);
461}
462
463int amdgpu_gfx_disable_kcq(struct amdgpu_device *adev)
464{
465 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
466 struct amdgpu_ring *kiq_ring = &kiq->ring;
467 int i, r;
468
469 if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues)
470 return -EINVAL;
471
472 spin_lock(&adev->gfx.kiq.ring_lock);
473 if (amdgpu_ring_alloc(kiq_ring, kiq->pmf->unmap_queues_size *
474 adev->gfx.num_compute_rings)) {
475 spin_unlock(&adev->gfx.kiq.ring_lock);
476 return -ENOMEM;
477 }
478
479 for (i = 0; i < adev->gfx.num_compute_rings; i++)
480 kiq->pmf->kiq_unmap_queues(kiq_ring, &adev->gfx.compute_ring[i],
481 RESET_QUEUES, 0, 0);
482 r = amdgpu_ring_test_helper(kiq_ring);
483 spin_unlock(&adev->gfx.kiq.ring_lock);
484
485 return r;
486}
487
488int amdgpu_queue_mask_bit_to_set_resource_bit(struct amdgpu_device *adev,
489 int queue_bit)
490{
491 int mec, pipe, queue;
492 int set_resource_bit = 0;
493
494 amdgpu_queue_mask_bit_to_mec_queue(adev, queue_bit, &mec, &pipe, &queue);
495
496 set_resource_bit = mec * 4 * 8 + pipe * 8 + queue;
497
498 return set_resource_bit;
499}
500
501int amdgpu_gfx_enable_kcq(struct amdgpu_device *adev)
502{
503 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
504 struct amdgpu_ring *kiq_ring = &adev->gfx.kiq.ring;
505 uint64_t queue_mask = 0;
506 int r, i;
507
508 if (!kiq->pmf || !kiq->pmf->kiq_map_queues || !kiq->pmf->kiq_set_resources)
509 return -EINVAL;
510
511 for (i = 0; i < AMDGPU_MAX_COMPUTE_QUEUES; ++i) {
512 if (!test_bit(i, adev->gfx.mec.queue_bitmap))
513 continue;
514
515 /* This situation may be hit in the future if a new HW
516 * generation exposes more than 64 queues. If so, the
517 * definition of queue_mask needs updating */
518 if (WARN_ON(i > (sizeof(queue_mask)*8))) {
519 DRM_ERROR("Invalid KCQ enabled: %d\n", i);
520 break;
521 }
522
523 queue_mask |= (1ull << amdgpu_queue_mask_bit_to_set_resource_bit(adev, i));
524 }
525
526 DRM_INFO("kiq ring mec %d pipe %d q %d\n", kiq_ring->me, kiq_ring->pipe,
527 kiq_ring->queue);
528 spin_lock(&adev->gfx.kiq.ring_lock);
529 r = amdgpu_ring_alloc(kiq_ring, kiq->pmf->map_queues_size *
530 adev->gfx.num_compute_rings +
531 kiq->pmf->set_resources_size);
532 if (r) {
533 DRM_ERROR("Failed to lock KIQ (%d).\n", r);
534 spin_unlock(&adev->gfx.kiq.ring_lock);
535 return r;
536 }
537
538 kiq->pmf->kiq_set_resources(kiq_ring, queue_mask);
539 for (i = 0; i < adev->gfx.num_compute_rings; i++)
540 kiq->pmf->kiq_map_queues(kiq_ring, &adev->gfx.compute_ring[i]);
541
542 r = amdgpu_ring_test_helper(kiq_ring);
543 spin_unlock(&adev->gfx.kiq.ring_lock);
544 if (r)
545 DRM_ERROR("KCQ enable failed\n");
546
547 return r;
548}
549
550/* amdgpu_gfx_off_ctrl - Handle gfx off feature enable/disable
551 *
552 * @adev: amdgpu_device pointer
553 * @bool enable true: enable gfx off feature, false: disable gfx off feature
554 *
555 * 1. gfx off feature will be enabled by gfx ip after gfx cg gp enabled.
556 * 2. other client can send request to disable gfx off feature, the request should be honored.
557 * 3. other client can cancel their request of disable gfx off feature
558 * 4. other client should not send request to enable gfx off feature before disable gfx off feature.
559 */
560
561void amdgpu_gfx_off_ctrl(struct amdgpu_device *adev, bool enable)
562{
563 unsigned long delay = GFX_OFF_DELAY_ENABLE;
564
565 if (!(adev->pm.pp_feature & PP_GFXOFF_MASK))
566 return;
567
568 mutex_lock(&adev->gfx.gfx_off_mutex);
569
570 if (enable) {
571 /* If the count is already 0, it means there's an imbalance bug somewhere.
572 * Note that the bug may be in a different caller than the one which triggers the
573 * WARN_ON_ONCE.
574 */
575 if (WARN_ON_ONCE(adev->gfx.gfx_off_req_count == 0))
576 goto unlock;
577
578 adev->gfx.gfx_off_req_count--;
579
580 if (adev->gfx.gfx_off_req_count == 0 &&
581 !adev->gfx.gfx_off_state) {
582 /* If going to s2idle, no need to wait */
583 if (adev->in_s0ix)
584 delay = GFX_OFF_NO_DELAY;
585 schedule_delayed_work(&adev->gfx.gfx_off_delay_work,
586 delay);
587 }
588 } else {
589 if (adev->gfx.gfx_off_req_count == 0) {
590 cancel_delayed_work_sync(&adev->gfx.gfx_off_delay_work);
591
592 if (adev->gfx.gfx_off_state &&
593 !amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_GFX, false)) {
594 adev->gfx.gfx_off_state = false;
595
596 if (adev->gfx.funcs->init_spm_golden) {
597 dev_dbg(adev->dev,
598 "GFXOFF is disabled, re-init SPM golden settings\n");
599 amdgpu_gfx_init_spm_golden(adev);
600 }
601 }
602 }
603
604 adev->gfx.gfx_off_req_count++;
605 }
606
607unlock:
608 mutex_unlock(&adev->gfx.gfx_off_mutex);
609}
610
611int amdgpu_get_gfx_off_status(struct amdgpu_device *adev, uint32_t *value)
612{
613
614 int r = 0;
615
616 mutex_lock(&adev->gfx.gfx_off_mutex);
617
618 r = smu_get_status_gfxoff(adev, value);
619
620 mutex_unlock(&adev->gfx.gfx_off_mutex);
621
622 return r;
623}
624
625int amdgpu_gfx_ras_late_init(struct amdgpu_device *adev)
626{
627 int r;
628 struct ras_fs_if fs_info = {
629 .sysfs_name = "gfx_err_count",
630 };
631 struct ras_ih_if ih_info = {
632 .cb = amdgpu_gfx_process_ras_data_cb,
633 };
634
635 if (!adev->gfx.ras_if) {
636 adev->gfx.ras_if = kmalloc(sizeof(struct ras_common_if), GFP_KERNEL);
637 if (!adev->gfx.ras_if)
638 return -ENOMEM;
639 adev->gfx.ras_if->block = AMDGPU_RAS_BLOCK__GFX;
640 adev->gfx.ras_if->type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
641 adev->gfx.ras_if->sub_block_index = 0;
642 strcpy(adev->gfx.ras_if->name, "gfx");
643 }
644 fs_info.head = ih_info.head = *adev->gfx.ras_if;
645 r = amdgpu_ras_late_init(adev, adev->gfx.ras_if,
646 &fs_info, &ih_info);
647 if (r)
648 goto free;
649
650 if (amdgpu_ras_is_supported(adev, adev->gfx.ras_if->block)) {
651 if (!amdgpu_persistent_edc_harvesting_supported(adev))
652 amdgpu_ras_reset_error_status(adev, AMDGPU_RAS_BLOCK__GFX);
653
654 r = amdgpu_irq_get(adev, &adev->gfx.cp_ecc_error_irq, 0);
655 if (r)
656 goto late_fini;
657 } else {
658 /* free gfx ras_if if ras is not supported */
659 r = 0;
660 goto free;
661 }
662
663 return 0;
664late_fini:
665 amdgpu_ras_late_fini(adev, adev->gfx.ras_if, &ih_info);
666free:
667 kfree(adev->gfx.ras_if);
668 adev->gfx.ras_if = NULL;
669 return r;
670}
671
672void amdgpu_gfx_ras_fini(struct amdgpu_device *adev)
673{
674 if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__GFX) &&
675 adev->gfx.ras_if) {
676 struct ras_common_if *ras_if = adev->gfx.ras_if;
677 struct ras_ih_if ih_info = {
678 .head = *ras_if,
679 .cb = amdgpu_gfx_process_ras_data_cb,
680 };
681
682 amdgpu_ras_late_fini(adev, ras_if, &ih_info);
683 kfree(ras_if);
684 }
685}
686
687int amdgpu_gfx_process_ras_data_cb(struct amdgpu_device *adev,
688 void *err_data,
689 struct amdgpu_iv_entry *entry)
690{
691 /* TODO ue will trigger an interrupt.
692 *
693 * When “Full RAS” is enabled, the per-IP interrupt sources should
694 * be disabled and the driver should only look for the aggregated
695 * interrupt via sync flood
696 */
697 if (!amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__GFX)) {
698 kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
699 if (adev->gfx.ras_funcs &&
700 adev->gfx.ras_funcs->query_ras_error_count)
701 adev->gfx.ras_funcs->query_ras_error_count(adev, err_data);
702 amdgpu_ras_reset_gpu(adev);
703 }
704 return AMDGPU_RAS_SUCCESS;
705}
706
707int amdgpu_gfx_cp_ecc_error_irq(struct amdgpu_device *adev,
708 struct amdgpu_irq_src *source,
709 struct amdgpu_iv_entry *entry)
710{
711 struct ras_common_if *ras_if = adev->gfx.ras_if;
712 struct ras_dispatch_if ih_data = {
713 .entry = entry,
714 };
715
716 if (!ras_if)
717 return 0;
718
719 ih_data.head = *ras_if;
720
721 DRM_ERROR("CP ECC ERROR IRQ\n");
722 amdgpu_ras_interrupt_dispatch(adev, &ih_data);
723 return 0;
724}
725
726uint32_t amdgpu_kiq_rreg(struct amdgpu_device *adev, uint32_t reg)
727{
728 signed long r, cnt = 0;
729 unsigned long flags;
730 uint32_t seq, reg_val_offs = 0, value = 0;
731 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
732 struct amdgpu_ring *ring = &kiq->ring;
733
734 if (amdgpu_device_skip_hw_access(adev))
735 return 0;
736
737 BUG_ON(!ring->funcs->emit_rreg);
738
739 spin_lock_irqsave(&kiq->ring_lock, flags);
740 if (amdgpu_device_wb_get(adev, ®_val_offs)) {
741 pr_err("critical bug! too many kiq readers\n");
742 goto failed_unlock;
743 }
744 amdgpu_ring_alloc(ring, 32);
745 amdgpu_ring_emit_rreg(ring, reg, reg_val_offs);
746 r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
747 if (r)
748 goto failed_undo;
749
750 amdgpu_ring_commit(ring);
751 spin_unlock_irqrestore(&kiq->ring_lock, flags);
752
753 r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
754
755 /* don't wait anymore for gpu reset case because this way may
756 * block gpu_recover() routine forever, e.g. this virt_kiq_rreg
757 * is triggered in TTM and ttm_bo_lock_delayed_workqueue() will
758 * never return if we keep waiting in virt_kiq_rreg, which cause
759 * gpu_recover() hang there.
760 *
761 * also don't wait anymore for IRQ context
762 * */
763 if (r < 1 && (amdgpu_in_reset(adev) || in_interrupt()))
764 goto failed_kiq_read;
765
766 might_sleep();
767 while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) {
768 msleep(MAX_KIQ_REG_BAILOUT_INTERVAL);
769 r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
770 }
771
772 if (cnt > MAX_KIQ_REG_TRY)
773 goto failed_kiq_read;
774
775 mb();
776 value = adev->wb.wb[reg_val_offs];
777 amdgpu_device_wb_free(adev, reg_val_offs);
778 return value;
779
780failed_undo:
781 amdgpu_ring_undo(ring);
782failed_unlock:
783 spin_unlock_irqrestore(&kiq->ring_lock, flags);
784failed_kiq_read:
785 if (reg_val_offs)
786 amdgpu_device_wb_free(adev, reg_val_offs);
787 dev_err(adev->dev, "failed to read reg:%x\n", reg);
788 return ~0;
789}
790
791void amdgpu_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
792{
793 signed long r, cnt = 0;
794 unsigned long flags;
795 uint32_t seq;
796 struct amdgpu_kiq *kiq = &adev->gfx.kiq;
797 struct amdgpu_ring *ring = &kiq->ring;
798
799 BUG_ON(!ring->funcs->emit_wreg);
800
801 if (amdgpu_device_skip_hw_access(adev))
802 return;
803
804 spin_lock_irqsave(&kiq->ring_lock, flags);
805 amdgpu_ring_alloc(ring, 32);
806 amdgpu_ring_emit_wreg(ring, reg, v);
807 r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
808 if (r)
809 goto failed_undo;
810
811 amdgpu_ring_commit(ring);
812 spin_unlock_irqrestore(&kiq->ring_lock, flags);
813
814 r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
815
816 /* don't wait anymore for gpu reset case because this way may
817 * block gpu_recover() routine forever, e.g. this virt_kiq_rreg
818 * is triggered in TTM and ttm_bo_lock_delayed_workqueue() will
819 * never return if we keep waiting in virt_kiq_rreg, which cause
820 * gpu_recover() hang there.
821 *
822 * also don't wait anymore for IRQ context
823 * */
824 if (r < 1 && (amdgpu_in_reset(adev) || in_interrupt()))
825 goto failed_kiq_write;
826
827 might_sleep();
828 while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) {
829
830 msleep(MAX_KIQ_REG_BAILOUT_INTERVAL);
831 r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
832 }
833
834 if (cnt > MAX_KIQ_REG_TRY)
835 goto failed_kiq_write;
836
837 return;
838
839failed_undo:
840 amdgpu_ring_undo(ring);
841 spin_unlock_irqrestore(&kiq->ring_lock, flags);
842failed_kiq_write:
843 dev_err(adev->dev, "failed to write reg:%x\n", reg);
844}
845
846int amdgpu_gfx_get_num_kcq(struct amdgpu_device *adev)
847{
848 if (amdgpu_num_kcq == -1) {
849 return 8;
850 } else if (amdgpu_num_kcq > 8 || amdgpu_num_kcq < 0) {
851 dev_warn(adev->dev, "set kernel compute queue number to 8 due to invalid parameter provided by user\n");
852 return 8;
853 }
854 return amdgpu_num_kcq;
855}
856
857/* amdgpu_gfx_state_change_set - Handle gfx power state change set
858 * @adev: amdgpu_device pointer
859 * @state: gfx power state(1 -sGpuChangeState_D0Entry and 2 -sGpuChangeState_D3Entry)
860 *
861 */
862
863void amdgpu_gfx_state_change_set(struct amdgpu_device *adev, enum gfx_change_state state)
864{
865 mutex_lock(&adev->pm.mutex);
866 if (adev->powerplay.pp_funcs &&
867 adev->powerplay.pp_funcs->gfx_state_change_set)
868 ((adev)->powerplay.pp_funcs->gfx_state_change_set(
869 (adev)->powerplay.pp_handle, state));
870 mutex_unlock(&adev->pm.mutex);
871}