tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright 2009 VMware, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Michel Dänzer
23 */
24#include <drm/drmP.h>
25#include <drm/radeon_drm.h>
26#include "radeon_reg.h"
27#include "radeon.h"
28
29#define RADEON_TEST_COPY_BLIT 1
30#define RADEON_TEST_COPY_DMA 0
31
32
33/* Test BO GTT->VRAM and VRAM->GTT GPU copies across the whole GTT aperture */
34static void radeon_do_test_moves(struct radeon_device *rdev, int flag)
35{
36 struct radeon_bo *vram_obj = NULL;
37 struct radeon_bo **gtt_obj = NULL;
38 uint64_t gtt_addr, vram_addr;
39 unsigned n, size;
40 int i, r, ring;
41
42 switch (flag) {
43 case RADEON_TEST_COPY_DMA:
44 ring = radeon_copy_dma_ring_index(rdev);
45 break;
46 case RADEON_TEST_COPY_BLIT:
47 ring = radeon_copy_blit_ring_index(rdev);
48 break;
49 default:
50 DRM_ERROR("Unknown copy method\n");
51 return;
52 }
53
54 size = 1024 * 1024;
55
56 /* Number of tests =
57 * (Total GTT - IB pool - writeback page - ring buffers) / test size
58 */
59 n = rdev->mc.gtt_size - rdev->gart_pin_size;
60 n /= size;
61
62 gtt_obj = kzalloc(n * sizeof(*gtt_obj), GFP_KERNEL);
63 if (!gtt_obj) {
64 DRM_ERROR("Failed to allocate %d pointers\n", n);
65 r = 1;
66 goto out_cleanup;
67 }
68
69 r = radeon_bo_create(rdev, size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
70 0, NULL, &vram_obj);
71 if (r) {
72 DRM_ERROR("Failed to create VRAM object\n");
73 goto out_cleanup;
74 }
75 r = radeon_bo_reserve(vram_obj, false);
76 if (unlikely(r != 0))
77 goto out_unref;
78 r = radeon_bo_pin(vram_obj, RADEON_GEM_DOMAIN_VRAM, &vram_addr);
79 if (r) {
80 DRM_ERROR("Failed to pin VRAM object\n");
81 goto out_unres;
82 }
83 for (i = 0; i < n; i++) {
84 void *gtt_map, *vram_map;
85 void **gtt_start, **gtt_end;
86 void **vram_start, **vram_end;
87 struct radeon_fence *fence = NULL;
88
89 r = radeon_bo_create(rdev, size, PAGE_SIZE, true,
90 RADEON_GEM_DOMAIN_GTT, 0, NULL, gtt_obj + i);
91 if (r) {
92 DRM_ERROR("Failed to create GTT object %d\n", i);
93 goto out_lclean;
94 }
95
96 r = radeon_bo_reserve(gtt_obj[i], false);
97 if (unlikely(r != 0))
98 goto out_lclean_unref;
99 r = radeon_bo_pin(gtt_obj[i], RADEON_GEM_DOMAIN_GTT, >t_addr);
100 if (r) {
101 DRM_ERROR("Failed to pin GTT object %d\n", i);
102 goto out_lclean_unres;
103 }
104
105 r = radeon_bo_kmap(gtt_obj[i], >t_map);
106 if (r) {
107 DRM_ERROR("Failed to map GTT object %d\n", i);
108 goto out_lclean_unpin;
109 }
110
111 for (gtt_start = gtt_map, gtt_end = gtt_map + size;
112 gtt_start < gtt_end;
113 gtt_start++)
114 *gtt_start = gtt_start;
115
116 radeon_bo_kunmap(gtt_obj[i]);
117
118 if (ring == R600_RING_TYPE_DMA_INDEX)
119 r = radeon_copy_dma(rdev, gtt_addr, vram_addr, size / RADEON_GPU_PAGE_SIZE, &fence);
120 else
121 r = radeon_copy_blit(rdev, gtt_addr, vram_addr, size / RADEON_GPU_PAGE_SIZE, &fence);
122 if (r) {
123 DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
124 goto out_lclean_unpin;
125 }
126
127 r = radeon_fence_wait(fence, false);
128 if (r) {
129 DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
130 goto out_lclean_unpin;
131 }
132
133 radeon_fence_unref(&fence);
134
135 r = radeon_bo_kmap(vram_obj, &vram_map);
136 if (r) {
137 DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
138 goto out_lclean_unpin;
139 }
140
141 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
142 vram_start = vram_map, vram_end = vram_map + size;
143 vram_start < vram_end;
144 gtt_start++, vram_start++) {
145 if (*vram_start != gtt_start) {
146 DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
147 "expected 0x%p (GTT/VRAM offset "
148 "0x%16llx/0x%16llx)\n",
149 i, *vram_start, gtt_start,
150 (unsigned long long)
151 (gtt_addr - rdev->mc.gtt_start +
152 (void*)gtt_start - gtt_map),
153 (unsigned long long)
154 (vram_addr - rdev->mc.vram_start +
155 (void*)gtt_start - gtt_map));
156 radeon_bo_kunmap(vram_obj);
157 goto out_lclean_unpin;
158 }
159 *vram_start = vram_start;
160 }
161
162 radeon_bo_kunmap(vram_obj);
163
164 if (ring == R600_RING_TYPE_DMA_INDEX)
165 r = radeon_copy_dma(rdev, vram_addr, gtt_addr, size / RADEON_GPU_PAGE_SIZE, &fence);
166 else
167 r = radeon_copy_blit(rdev, vram_addr, gtt_addr, size / RADEON_GPU_PAGE_SIZE, &fence);
168 if (r) {
169 DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
170 goto out_lclean_unpin;
171 }
172
173 r = radeon_fence_wait(fence, false);
174 if (r) {
175 DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
176 goto out_lclean_unpin;
177 }
178
179 radeon_fence_unref(&fence);
180
181 r = radeon_bo_kmap(gtt_obj[i], >t_map);
182 if (r) {
183 DRM_ERROR("Failed to map GTT object after copy %d\n", i);
184 goto out_lclean_unpin;
185 }
186
187 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
188 vram_start = vram_map, vram_end = vram_map + size;
189 gtt_start < gtt_end;
190 gtt_start++, vram_start++) {
191 if (*gtt_start != vram_start) {
192 DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
193 "expected 0x%p (VRAM/GTT offset "
194 "0x%16llx/0x%16llx)\n",
195 i, *gtt_start, vram_start,
196 (unsigned long long)
197 (vram_addr - rdev->mc.vram_start +
198 (void*)vram_start - vram_map),
199 (unsigned long long)
200 (gtt_addr - rdev->mc.gtt_start +
201 (void*)vram_start - vram_map));
202 radeon_bo_kunmap(gtt_obj[i]);
203 goto out_lclean_unpin;
204 }
205 }
206
207 radeon_bo_kunmap(gtt_obj[i]);
208
209 DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
210 gtt_addr - rdev->mc.gtt_start);
211 continue;
212
213out_lclean_unpin:
214 radeon_bo_unpin(gtt_obj[i]);
215out_lclean_unres:
216 radeon_bo_unreserve(gtt_obj[i]);
217out_lclean_unref:
218 radeon_bo_unref(>t_obj[i]);
219out_lclean:
220 for (--i; i >= 0; --i) {
221 radeon_bo_unpin(gtt_obj[i]);
222 radeon_bo_unreserve(gtt_obj[i]);
223 radeon_bo_unref(>t_obj[i]);
224 }
225 if (fence)
226 radeon_fence_unref(&fence);
227 break;
228 }
229
230 radeon_bo_unpin(vram_obj);
231out_unres:
232 radeon_bo_unreserve(vram_obj);
233out_unref:
234 radeon_bo_unref(&vram_obj);
235out_cleanup:
236 kfree(gtt_obj);
237 if (r) {
238 printk(KERN_WARNING "Error while testing BO move.\n");
239 }
240}
241
242void radeon_test_moves(struct radeon_device *rdev)
243{
244 if (rdev->asic->copy.dma)
245 radeon_do_test_moves(rdev, RADEON_TEST_COPY_DMA);
246 if (rdev->asic->copy.blit)
247 radeon_do_test_moves(rdev, RADEON_TEST_COPY_BLIT);
248}
249
250static int radeon_test_create_and_emit_fence(struct radeon_device *rdev,
251 struct radeon_ring *ring,
252 struct radeon_fence **fence)
253{
254 uint32_t handle = ring->idx ^ 0xdeafbeef;
255 int r;
256
257 if (ring->idx == R600_RING_TYPE_UVD_INDEX) {
258 r = radeon_uvd_get_create_msg(rdev, ring->idx, handle, NULL);
259 if (r) {
260 DRM_ERROR("Failed to get dummy create msg\n");
261 return r;
262 }
263
264 r = radeon_uvd_get_destroy_msg(rdev, ring->idx, handle, fence);
265 if (r) {
266 DRM_ERROR("Failed to get dummy destroy msg\n");
267 return r;
268 }
269
270 } else if (ring->idx == TN_RING_TYPE_VCE1_INDEX ||
271 ring->idx == TN_RING_TYPE_VCE2_INDEX) {
272 r = radeon_vce_get_create_msg(rdev, ring->idx, handle, NULL);
273 if (r) {
274 DRM_ERROR("Failed to get dummy create msg\n");
275 return r;
276 }
277
278 r = radeon_vce_get_destroy_msg(rdev, ring->idx, handle, fence);
279 if (r) {
280 DRM_ERROR("Failed to get dummy destroy msg\n");
281 return r;
282 }
283
284 } else {
285 r = radeon_ring_lock(rdev, ring, 64);
286 if (r) {
287 DRM_ERROR("Failed to lock ring A %d\n", ring->idx);
288 return r;
289 }
290 radeon_fence_emit(rdev, fence, ring->idx);
291 radeon_ring_unlock_commit(rdev, ring, false);
292 }
293 return 0;
294}
295
296void radeon_test_ring_sync(struct radeon_device *rdev,
297 struct radeon_ring *ringA,
298 struct radeon_ring *ringB)
299{
300 struct radeon_fence *fence1 = NULL, *fence2 = NULL;
301 struct radeon_semaphore *semaphore = NULL;
302 int r;
303
304 r = radeon_semaphore_create(rdev, &semaphore);
305 if (r) {
306 DRM_ERROR("Failed to create semaphore\n");
307 goto out_cleanup;
308 }
309
310 r = radeon_ring_lock(rdev, ringA, 64);
311 if (r) {
312 DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
313 goto out_cleanup;
314 }
315 radeon_semaphore_emit_wait(rdev, ringA->idx, semaphore);
316 radeon_ring_unlock_commit(rdev, ringA, false);
317
318 r = radeon_test_create_and_emit_fence(rdev, ringA, &fence1);
319 if (r)
320 goto out_cleanup;
321
322 r = radeon_ring_lock(rdev, ringA, 64);
323 if (r) {
324 DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
325 goto out_cleanup;
326 }
327 radeon_semaphore_emit_wait(rdev, ringA->idx, semaphore);
328 radeon_ring_unlock_commit(rdev, ringA, false);
329
330 r = radeon_test_create_and_emit_fence(rdev, ringA, &fence2);
331 if (r)
332 goto out_cleanup;
333
334 mdelay(1000);
335
336 if (radeon_fence_signaled(fence1)) {
337 DRM_ERROR("Fence 1 signaled without waiting for semaphore.\n");
338 goto out_cleanup;
339 }
340
341 r = radeon_ring_lock(rdev, ringB, 64);
342 if (r) {
343 DRM_ERROR("Failed to lock ring B %p\n", ringB);
344 goto out_cleanup;
345 }
346 radeon_semaphore_emit_signal(rdev, ringB->idx, semaphore);
347 radeon_ring_unlock_commit(rdev, ringB, false);
348
349 r = radeon_fence_wait(fence1, false);
350 if (r) {
351 DRM_ERROR("Failed to wait for sync fence 1\n");
352 goto out_cleanup;
353 }
354
355 mdelay(1000);
356
357 if (radeon_fence_signaled(fence2)) {
358 DRM_ERROR("Fence 2 signaled without waiting for semaphore.\n");
359 goto out_cleanup;
360 }
361
362 r = radeon_ring_lock(rdev, ringB, 64);
363 if (r) {
364 DRM_ERROR("Failed to lock ring B %p\n", ringB);
365 goto out_cleanup;
366 }
367 radeon_semaphore_emit_signal(rdev, ringB->idx, semaphore);
368 radeon_ring_unlock_commit(rdev, ringB, false);
369
370 r = radeon_fence_wait(fence2, false);
371 if (r) {
372 DRM_ERROR("Failed to wait for sync fence 1\n");
373 goto out_cleanup;
374 }
375
376out_cleanup:
377 radeon_semaphore_free(rdev, &semaphore, NULL);
378
379 if (fence1)
380 radeon_fence_unref(&fence1);
381
382 if (fence2)
383 radeon_fence_unref(&fence2);
384
385 if (r)
386 printk(KERN_WARNING "Error while testing ring sync (%d).\n", r);
387}
388
389static void radeon_test_ring_sync2(struct radeon_device *rdev,
390 struct radeon_ring *ringA,
391 struct radeon_ring *ringB,
392 struct radeon_ring *ringC)
393{
394 struct radeon_fence *fenceA = NULL, *fenceB = NULL;
395 struct radeon_semaphore *semaphore = NULL;
396 bool sigA, sigB;
397 int i, r;
398
399 r = radeon_semaphore_create(rdev, &semaphore);
400 if (r) {
401 DRM_ERROR("Failed to create semaphore\n");
402 goto out_cleanup;
403 }
404
405 r = radeon_ring_lock(rdev, ringA, 64);
406 if (r) {
407 DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
408 goto out_cleanup;
409 }
410 radeon_semaphore_emit_wait(rdev, ringA->idx, semaphore);
411 radeon_ring_unlock_commit(rdev, ringA, false);
412
413 r = radeon_test_create_and_emit_fence(rdev, ringA, &fenceA);
414 if (r)
415 goto out_cleanup;
416
417 r = radeon_ring_lock(rdev, ringB, 64);
418 if (r) {
419 DRM_ERROR("Failed to lock ring B %d\n", ringB->idx);
420 goto out_cleanup;
421 }
422 radeon_semaphore_emit_wait(rdev, ringB->idx, semaphore);
423 radeon_ring_unlock_commit(rdev, ringB, false);
424 r = radeon_test_create_and_emit_fence(rdev, ringB, &fenceB);
425 if (r)
426 goto out_cleanup;
427
428 mdelay(1000);
429
430 if (radeon_fence_signaled(fenceA)) {
431 DRM_ERROR("Fence A signaled without waiting for semaphore.\n");
432 goto out_cleanup;
433 }
434 if (radeon_fence_signaled(fenceB)) {
435 DRM_ERROR("Fence B signaled without waiting for semaphore.\n");
436 goto out_cleanup;
437 }
438
439 r = radeon_ring_lock(rdev, ringC, 64);
440 if (r) {
441 DRM_ERROR("Failed to lock ring B %p\n", ringC);
442 goto out_cleanup;
443 }
444 radeon_semaphore_emit_signal(rdev, ringC->idx, semaphore);
445 radeon_ring_unlock_commit(rdev, ringC, false);
446
447 for (i = 0; i < 30; ++i) {
448 mdelay(100);
449 sigA = radeon_fence_signaled(fenceA);
450 sigB = radeon_fence_signaled(fenceB);
451 if (sigA || sigB)
452 break;
453 }
454
455 if (!sigA && !sigB) {
456 DRM_ERROR("Neither fence A nor B has been signaled\n");
457 goto out_cleanup;
458 } else if (sigA && sigB) {
459 DRM_ERROR("Both fence A and B has been signaled\n");
460 goto out_cleanup;
461 }
462
463 DRM_INFO("Fence %c was first signaled\n", sigA ? 'A' : 'B');
464
465 r = radeon_ring_lock(rdev, ringC, 64);
466 if (r) {
467 DRM_ERROR("Failed to lock ring B %p\n", ringC);
468 goto out_cleanup;
469 }
470 radeon_semaphore_emit_signal(rdev, ringC->idx, semaphore);
471 radeon_ring_unlock_commit(rdev, ringC, false);
472
473 mdelay(1000);
474
475 r = radeon_fence_wait(fenceA, false);
476 if (r) {
477 DRM_ERROR("Failed to wait for sync fence A\n");
478 goto out_cleanup;
479 }
480 r = radeon_fence_wait(fenceB, false);
481 if (r) {
482 DRM_ERROR("Failed to wait for sync fence B\n");
483 goto out_cleanup;
484 }
485
486out_cleanup:
487 radeon_semaphore_free(rdev, &semaphore, NULL);
488
489 if (fenceA)
490 radeon_fence_unref(&fenceA);
491
492 if (fenceB)
493 radeon_fence_unref(&fenceB);
494
495 if (r)
496 printk(KERN_WARNING "Error while testing ring sync (%d).\n", r);
497}
498
499static bool radeon_test_sync_possible(struct radeon_ring *ringA,
500 struct radeon_ring *ringB)
501{
502 if (ringA->idx == TN_RING_TYPE_VCE2_INDEX &&
503 ringB->idx == TN_RING_TYPE_VCE1_INDEX)
504 return false;
505
506 return true;
507}
508
509void radeon_test_syncing(struct radeon_device *rdev)
510{
511 int i, j, k;
512
513 for (i = 1; i < RADEON_NUM_RINGS; ++i) {
514 struct radeon_ring *ringA = &rdev->ring[i];
515 if (!ringA->ready)
516 continue;
517
518 for (j = 0; j < i; ++j) {
519 struct radeon_ring *ringB = &rdev->ring[j];
520 if (!ringB->ready)
521 continue;
522
523 if (!radeon_test_sync_possible(ringA, ringB))
524 continue;
525
526 DRM_INFO("Testing syncing between rings %d and %d...\n", i, j);
527 radeon_test_ring_sync(rdev, ringA, ringB);
528
529 DRM_INFO("Testing syncing between rings %d and %d...\n", j, i);
530 radeon_test_ring_sync(rdev, ringB, ringA);
531
532 for (k = 0; k < j; ++k) {
533 struct radeon_ring *ringC = &rdev->ring[k];
534 if (!ringC->ready)
535 continue;
536
537 if (!radeon_test_sync_possible(ringA, ringC))
538 continue;
539
540 if (!radeon_test_sync_possible(ringB, ringC))
541 continue;
542
543 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", i, j, k);
544 radeon_test_ring_sync2(rdev, ringA, ringB, ringC);
545
546 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", i, k, j);
547 radeon_test_ring_sync2(rdev, ringA, ringC, ringB);
548
549 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", j, i, k);
550 radeon_test_ring_sync2(rdev, ringB, ringA, ringC);
551
552 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", j, k, i);
553 radeon_test_ring_sync2(rdev, ringB, ringC, ringA);
554
555 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", k, i, j);
556 radeon_test_ring_sync2(rdev, ringC, ringA, ringB);
557
558 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", k, j, i);
559 radeon_test_ring_sync2(rdev, ringC, ringB, ringA);
560 }
561 }
562 }
563}