1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /*
3 * Copyright 2009 VMware, 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 * Authors: Michel Dänzer
24 */
25
26 #include <drm/radeon_drm.h>
27 #include "radeon_reg.h"
28 #include "radeon.h"
29
30 #define RADEON_TEST_COPY_BLIT 1
31 #define RADEON_TEST_COPY_DMA 0
32
33
34 /* Test BO GTT->VRAM and VRAM->GTT GPU copies across the whole GTT aperture */
radeon_do_test_moves(struct radeon_device * rdev,int flag)35 static void radeon_do_test_moves(struct radeon_device *rdev, int flag)
36 {
37 struct radeon_bo *vram_obj = NULL;
38 struct radeon_bo **gtt_obj = NULL;
39 uint64_t gtt_addr, vram_addr;
40 unsigned n, size;
41 int i, r, ring;
42
43 switch (flag) {
44 case RADEON_TEST_COPY_DMA:
45 ring = radeon_copy_dma_ring_index(rdev);
46 break;
47 case RADEON_TEST_COPY_BLIT:
48 ring = radeon_copy_blit_ring_index(rdev);
49 break;
50 default:
51 DRM_ERROR("Unknown copy method\n");
52 return;
53 }
54
55 size = 1024 * 1024;
56
57 /* Number of tests =
58 * (Total GTT - IB pool - writeback page - ring buffers) / test size
59 */
60 n = rdev->mc.gtt_size - rdev->gart_pin_size;
61 n /= size;
62
63 gtt_obj = kcalloc(n, sizeof(*gtt_obj), GFP_KERNEL);
64 if (!gtt_obj) {
65 DRM_ERROR("Failed to allocate %d pointers\n", n);
66 r = 1;
67 goto out_cleanup;
68 }
69
70 r = radeon_bo_create(rdev, size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
71 0, NULL, NULL, &vram_obj);
72 if (r) {
73 DRM_ERROR("Failed to create VRAM object\n");
74 goto out_cleanup;
75 }
76 r = radeon_bo_reserve(vram_obj, false);
77 if (unlikely(r != 0))
78 goto out_unref;
79 r = radeon_bo_pin(vram_obj, RADEON_GEM_DOMAIN_VRAM, &vram_addr);
80 if (r) {
81 DRM_ERROR("Failed to pin VRAM object\n");
82 goto out_unres;
83 }
84 for (i = 0; i < n; i++) {
85 void *gtt_map, *vram_map;
86 void **gtt_start, **gtt_end;
87 void **vram_start, **vram_end;
88 struct radeon_fence *fence = NULL;
89
90 r = radeon_bo_create(rdev, size, PAGE_SIZE, true,
91 RADEON_GEM_DOMAIN_GTT, 0, NULL, NULL,
92 gtt_obj + i);
93 if (r) {
94 DRM_ERROR("Failed to create GTT object %d\n", i);
95 goto out_lclean;
96 }
97
98 r = radeon_bo_reserve(gtt_obj[i], false);
99 if (unlikely(r != 0))
100 goto out_lclean_unref;
101 r = radeon_bo_pin(gtt_obj[i], RADEON_GEM_DOMAIN_GTT, >t_addr);
102 if (r) {
103 DRM_ERROR("Failed to pin GTT object %d\n", i);
104 goto out_lclean_unres;
105 }
106
107 r = radeon_bo_kmap(gtt_obj[i], >t_map);
108 if (r) {
109 DRM_ERROR("Failed to map GTT object %d\n", i);
110 goto out_lclean_unpin;
111 }
112
113 for (gtt_start = gtt_map, gtt_end = gtt_map + size;
114 gtt_start < gtt_end;
115 gtt_start++)
116 *gtt_start = gtt_start;
117
118 radeon_bo_kunmap(gtt_obj[i]);
119
120 if (ring == R600_RING_TYPE_DMA_INDEX)
121 fence = radeon_copy_dma(rdev, gtt_addr, vram_addr,
122 size / RADEON_GPU_PAGE_SIZE,
123 vram_obj->tbo.base.resv);
124 else
125 fence = radeon_copy_blit(rdev, gtt_addr, vram_addr,
126 size / RADEON_GPU_PAGE_SIZE,
127 vram_obj->tbo.base.resv);
128 if (IS_ERR(fence)) {
129 DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
130 r = PTR_ERR(fence);
131 goto out_lclean_unpin;
132 }
133
134 r = radeon_fence_wait(fence, false);
135 if (r) {
136 DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
137 goto out_lclean_unpin;
138 }
139
140 radeon_fence_unref(&fence);
141
142 r = radeon_bo_kmap(vram_obj, &vram_map);
143 if (r) {
144 DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
145 goto out_lclean_unpin;
146 }
147
148 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
149 vram_start = vram_map, vram_end = vram_map + size;
150 vram_start < vram_end;
151 gtt_start++, vram_start++) {
152 if (*vram_start != gtt_start) {
153 DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
154 "expected 0x%p (GTT/VRAM offset "
155 "0x%16llx/0x%16llx)\n",
156 i, *vram_start, gtt_start,
157 (unsigned long long)
158 (gtt_addr - rdev->mc.gtt_start +
159 (void *)gtt_start - gtt_map),
160 (unsigned long long)
161 (vram_addr - rdev->mc.vram_start +
162 (void *)gtt_start - gtt_map));
163 radeon_bo_kunmap(vram_obj);
164 goto out_lclean_unpin;
165 }
166 *vram_start = vram_start;
167 }
168
169 radeon_bo_kunmap(vram_obj);
170
171 if (ring == R600_RING_TYPE_DMA_INDEX)
172 fence = radeon_copy_dma(rdev, vram_addr, gtt_addr,
173 size / RADEON_GPU_PAGE_SIZE,
174 vram_obj->tbo.base.resv);
175 else
176 fence = radeon_copy_blit(rdev, vram_addr, gtt_addr,
177 size / RADEON_GPU_PAGE_SIZE,
178 vram_obj->tbo.base.resv);
179 if (IS_ERR(fence)) {
180 DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
181 r = PTR_ERR(fence);
182 goto out_lclean_unpin;
183 }
184
185 r = radeon_fence_wait(fence, false);
186 if (r) {
187 DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
188 goto out_lclean_unpin;
189 }
190
191 radeon_fence_unref(&fence);
192
193 r = radeon_bo_kmap(gtt_obj[i], >t_map);
194 if (r) {
195 DRM_ERROR("Failed to map GTT object after copy %d\n", i);
196 goto out_lclean_unpin;
197 }
198
199 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
200 vram_start = vram_map, vram_end = vram_map + size;
201 gtt_start < gtt_end;
202 gtt_start++, vram_start++) {
203 if (*gtt_start != vram_start) {
204 DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
205 "expected 0x%p (VRAM/GTT offset "
206 "0x%16llx/0x%16llx)\n",
207 i, *gtt_start, vram_start,
208 (unsigned long long)
209 (vram_addr - rdev->mc.vram_start +
210 (void *)vram_start - vram_map),
211 (unsigned long long)
212 (gtt_addr - rdev->mc.gtt_start +
213 (void *)vram_start - vram_map));
214 radeon_bo_kunmap(gtt_obj[i]);
215 goto out_lclean_unpin;
216 }
217 }
218
219 radeon_bo_kunmap(gtt_obj[i]);
220
221 DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
222 gtt_addr - rdev->mc.gtt_start);
223 continue;
224
225 out_lclean_unpin:
226 radeon_bo_unpin(gtt_obj[i]);
227 out_lclean_unres:
228 radeon_bo_unreserve(gtt_obj[i]);
229 out_lclean_unref:
230 radeon_bo_unref(>t_obj[i]);
231 out_lclean:
232 for (--i; i >= 0; --i) {
233 radeon_bo_unpin(gtt_obj[i]);
234 radeon_bo_unreserve(gtt_obj[i]);
235 radeon_bo_unref(>t_obj[i]);
236 }
237 if (fence && !IS_ERR(fence))
238 radeon_fence_unref(&fence);
239 break;
240 }
241
242 radeon_bo_unpin(vram_obj);
243 out_unres:
244 radeon_bo_unreserve(vram_obj);
245 out_unref:
246 radeon_bo_unref(&vram_obj);
247 out_cleanup:
248 kfree(gtt_obj);
249 if (r) {
250 pr_warn("Error while testing BO move\n");
251 }
252 }
253
radeon_test_moves(struct radeon_device * rdev)254 void radeon_test_moves(struct radeon_device *rdev)
255 {
256 if (rdev->asic->copy.dma)
257 radeon_do_test_moves(rdev, RADEON_TEST_COPY_DMA);
258 if (rdev->asic->copy.blit)
259 radeon_do_test_moves(rdev, RADEON_TEST_COPY_BLIT);
260 }
261
radeon_test_create_and_emit_fence(struct radeon_device * rdev,struct radeon_ring * ring,struct radeon_fence ** fence)262 static int radeon_test_create_and_emit_fence(struct radeon_device *rdev,
263 struct radeon_ring *ring,
264 struct radeon_fence **fence)
265 {
266 uint32_t handle = ring->idx ^ 0xdeafbeef;
267 int r;
268
269 if (ring->idx == R600_RING_TYPE_UVD_INDEX) {
270 r = radeon_uvd_get_create_msg(rdev, ring->idx, handle, NULL);
271 if (r) {
272 DRM_ERROR("Failed to get dummy create msg\n");
273 return r;
274 }
275
276 r = radeon_uvd_get_destroy_msg(rdev, ring->idx, handle, fence);
277 if (r) {
278 DRM_ERROR("Failed to get dummy destroy msg\n");
279 return r;
280 }
281
282 } else if (ring->idx == TN_RING_TYPE_VCE1_INDEX ||
283 ring->idx == TN_RING_TYPE_VCE2_INDEX) {
284 r = radeon_vce_get_create_msg(rdev, ring->idx, handle, NULL);
285 if (r) {
286 DRM_ERROR("Failed to get dummy create msg\n");
287 return r;
288 }
289
290 r = radeon_vce_get_destroy_msg(rdev, ring->idx, handle, fence);
291 if (r) {
292 DRM_ERROR("Failed to get dummy destroy msg\n");
293 return r;
294 }
295
296 } else {
297 r = radeon_ring_lock(rdev, ring, 64);
298 if (r) {
299 DRM_ERROR("Failed to lock ring A %d\n", ring->idx);
300 return r;
301 }
302 r = radeon_fence_emit(rdev, fence, ring->idx);
303 if (r) {
304 DRM_ERROR("Failed to emit fence\n");
305 radeon_ring_unlock_undo(rdev, ring);
306 return r;
307 }
308 radeon_ring_unlock_commit(rdev, ring, false);
309 }
310 return 0;
311 }
312
radeon_test_ring_sync(struct radeon_device * rdev,struct radeon_ring * ringA,struct radeon_ring * ringB)313 void radeon_test_ring_sync(struct radeon_device *rdev,
314 struct radeon_ring *ringA,
315 struct radeon_ring *ringB)
316 {
317 struct radeon_fence *fence1 = NULL, *fence2 = NULL;
318 struct radeon_semaphore *semaphore = NULL;
319 int r;
320
321 r = radeon_semaphore_create(rdev, &semaphore);
322 if (r) {
323 DRM_ERROR("Failed to create semaphore\n");
324 goto out_cleanup;
325 }
326
327 r = radeon_ring_lock(rdev, ringA, 64);
328 if (r) {
329 DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
330 goto out_cleanup;
331 }
332 radeon_semaphore_emit_wait(rdev, ringA->idx, semaphore);
333 radeon_ring_unlock_commit(rdev, ringA, false);
334
335 r = radeon_test_create_and_emit_fence(rdev, ringA, &fence1);
336 if (r)
337 goto out_cleanup;
338
339 r = radeon_ring_lock(rdev, ringA, 64);
340 if (r) {
341 DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
342 goto out_cleanup;
343 }
344 radeon_semaphore_emit_wait(rdev, ringA->idx, semaphore);
345 radeon_ring_unlock_commit(rdev, ringA, false);
346
347 r = radeon_test_create_and_emit_fence(rdev, ringA, &fence2);
348 if (r)
349 goto out_cleanup;
350
351 msleep(1000);
352
353 if (radeon_fence_signaled(fence1)) {
354 DRM_ERROR("Fence 1 signaled without waiting for semaphore.\n");
355 goto out_cleanup;
356 }
357
358 r = radeon_ring_lock(rdev, ringB, 64);
359 if (r) {
360 DRM_ERROR("Failed to lock ring B %p\n", ringB);
361 goto out_cleanup;
362 }
363 radeon_semaphore_emit_signal(rdev, ringB->idx, semaphore);
364 radeon_ring_unlock_commit(rdev, ringB, false);
365
366 r = radeon_fence_wait(fence1, false);
367 if (r) {
368 DRM_ERROR("Failed to wait for sync fence 1\n");
369 goto out_cleanup;
370 }
371
372 msleep(1000);
373
374 if (radeon_fence_signaled(fence2)) {
375 DRM_ERROR("Fence 2 signaled without waiting for semaphore.\n");
376 goto out_cleanup;
377 }
378
379 r = radeon_ring_lock(rdev, ringB, 64);
380 if (r) {
381 DRM_ERROR("Failed to lock ring B %p\n", ringB);
382 goto out_cleanup;
383 }
384 radeon_semaphore_emit_signal(rdev, ringB->idx, semaphore);
385 radeon_ring_unlock_commit(rdev, ringB, false);
386
387 r = radeon_fence_wait(fence2, false);
388 if (r) {
389 DRM_ERROR("Failed to wait for sync fence 1\n");
390 goto out_cleanup;
391 }
392
393 out_cleanup:
394 radeon_semaphore_free(rdev, &semaphore, NULL);
395
396 if (fence1)
397 radeon_fence_unref(&fence1);
398
399 if (fence2)
400 radeon_fence_unref(&fence2);
401
402 if (r)
403 pr_warn("Error while testing ring sync (%d)\n", r);
404 }
405
radeon_test_ring_sync2(struct radeon_device * rdev,struct radeon_ring * ringA,struct radeon_ring * ringB,struct radeon_ring * ringC)406 static void radeon_test_ring_sync2(struct radeon_device *rdev,
407 struct radeon_ring *ringA,
408 struct radeon_ring *ringB,
409 struct radeon_ring *ringC)
410 {
411 struct radeon_fence *fenceA = NULL, *fenceB = NULL;
412 struct radeon_semaphore *semaphore = NULL;
413 bool sigA, sigB;
414 int i, r;
415
416 r = radeon_semaphore_create(rdev, &semaphore);
417 if (r) {
418 DRM_ERROR("Failed to create semaphore\n");
419 goto out_cleanup;
420 }
421
422 r = radeon_ring_lock(rdev, ringA, 64);
423 if (r) {
424 DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
425 goto out_cleanup;
426 }
427 radeon_semaphore_emit_wait(rdev, ringA->idx, semaphore);
428 radeon_ring_unlock_commit(rdev, ringA, false);
429
430 r = radeon_test_create_and_emit_fence(rdev, ringA, &fenceA);
431 if (r)
432 goto out_cleanup;
433
434 r = radeon_ring_lock(rdev, ringB, 64);
435 if (r) {
436 DRM_ERROR("Failed to lock ring B %d\n", ringB->idx);
437 goto out_cleanup;
438 }
439 radeon_semaphore_emit_wait(rdev, ringB->idx, semaphore);
440 radeon_ring_unlock_commit(rdev, ringB, false);
441 r = radeon_test_create_and_emit_fence(rdev, ringB, &fenceB);
442 if (r)
443 goto out_cleanup;
444
445 msleep(1000);
446
447 if (radeon_fence_signaled(fenceA)) {
448 DRM_ERROR("Fence A signaled without waiting for semaphore.\n");
449 goto out_cleanup;
450 }
451 if (radeon_fence_signaled(fenceB)) {
452 DRM_ERROR("Fence B signaled without waiting for semaphore.\n");
453 goto out_cleanup;
454 }
455
456 r = radeon_ring_lock(rdev, ringC, 64);
457 if (r) {
458 DRM_ERROR("Failed to lock ring B %p\n", ringC);
459 goto out_cleanup;
460 }
461 radeon_semaphore_emit_signal(rdev, ringC->idx, semaphore);
462 radeon_ring_unlock_commit(rdev, ringC, false);
463
464 for (i = 0; i < 30; ++i) {
465 msleep(100);
466 sigA = radeon_fence_signaled(fenceA);
467 sigB = radeon_fence_signaled(fenceB);
468 if (sigA || sigB)
469 break;
470 }
471
472 if (!sigA && !sigB) {
473 DRM_ERROR("Neither fence A nor B has been signaled\n");
474 goto out_cleanup;
475 } else if (sigA && sigB) {
476 DRM_ERROR("Both fence A and B has been signaled\n");
477 goto out_cleanup;
478 }
479
480 DRM_INFO("Fence %c was first signaled\n", sigA ? 'A' : 'B');
481
482 r = radeon_ring_lock(rdev, ringC, 64);
483 if (r) {
484 DRM_ERROR("Failed to lock ring B %p\n", ringC);
485 goto out_cleanup;
486 }
487 radeon_semaphore_emit_signal(rdev, ringC->idx, semaphore);
488 radeon_ring_unlock_commit(rdev, ringC, false);
489
490 msleep(1000);
491
492 r = radeon_fence_wait(fenceA, false);
493 if (r) {
494 DRM_ERROR("Failed to wait for sync fence A\n");
495 goto out_cleanup;
496 }
497 r = radeon_fence_wait(fenceB, false);
498 if (r) {
499 DRM_ERROR("Failed to wait for sync fence B\n");
500 goto out_cleanup;
501 }
502
503 out_cleanup:
504 radeon_semaphore_free(rdev, &semaphore, NULL);
505
506 if (fenceA)
507 radeon_fence_unref(&fenceA);
508
509 if (fenceB)
510 radeon_fence_unref(&fenceB);
511
512 if (r)
513 pr_warn("Error while testing ring sync (%d)\n", r);
514 }
515
radeon_test_sync_possible(struct radeon_ring * ringA,struct radeon_ring * ringB)516 static bool radeon_test_sync_possible(struct radeon_ring *ringA,
517 struct radeon_ring *ringB)
518 {
519 if (ringA->idx == TN_RING_TYPE_VCE2_INDEX &&
520 ringB->idx == TN_RING_TYPE_VCE1_INDEX)
521 return false;
522
523 return true;
524 }
525
radeon_test_syncing(struct radeon_device * rdev)526 void radeon_test_syncing(struct radeon_device *rdev)
527 {
528 int i, j, k;
529
530 for (i = 1; i < RADEON_NUM_RINGS; ++i) {
531 struct radeon_ring *ringA = &rdev->ring[i];
532 if (!ringA->ready)
533 continue;
534
535 for (j = 0; j < i; ++j) {
536 struct radeon_ring *ringB = &rdev->ring[j];
537 if (!ringB->ready)
538 continue;
539
540 if (!radeon_test_sync_possible(ringA, ringB))
541 continue;
542
543 DRM_INFO("Testing syncing between rings %d and %d...\n", i, j);
544 radeon_test_ring_sync(rdev, ringA, ringB);
545
546 DRM_INFO("Testing syncing between rings %d and %d...\n", j, i);
547 radeon_test_ring_sync(rdev, ringB, ringA);
548
549 for (k = 0; k < j; ++k) {
550 struct radeon_ring *ringC = &rdev->ring[k];
551 if (!ringC->ready)
552 continue;
553
554 if (!radeon_test_sync_possible(ringA, ringC))
555 continue;
556
557 if (!radeon_test_sync_possible(ringB, ringC))
558 continue;
559
560 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", i, j, k);
561 radeon_test_ring_sync2(rdev, ringA, ringB, ringC);
562
563 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", i, k, j);
564 radeon_test_ring_sync2(rdev, ringA, ringC, ringB);
565
566 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", j, i, k);
567 radeon_test_ring_sync2(rdev, ringB, ringA, ringC);
568
569 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", j, k, i);
570 radeon_test_ring_sync2(rdev, ringB, ringC, ringA);
571
572 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", k, i, j);
573 radeon_test_ring_sync2(rdev, ringC, ringA, ringB);
574
575 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", k, j, i);
576 radeon_test_ring_sync2(rdev, ringC, ringB, ringA);
577 }
578 }
579 }
580 }
581