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1 | /* |
2 | * Copyright 2009 Jerome Glisse. | |
3 | * All Rights Reserved. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the | |
7 | * "Software"), to deal in the Software without restriction, including | |
8 | * without limitation the rights to use, copy, modify, merge, publish, | |
9 | * distribute, sub license, and/or sell copies of the Software, and to | |
10 | * permit persons to whom the Software is furnished to do so, subject to | |
11 | * the following conditions: | |
12 | * | |
13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
14 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
15 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
16 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
17 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
18 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
19 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
20 | * | |
21 | * The above copyright notice and this permission notice (including the | |
22 | * next paragraph) shall be included in all copies or substantial portions | |
23 | * of the Software. | |
24 | * | |
25 | */ | |
26 | /* | |
27 | * Authors: | |
28 | * Jerome Glisse <glisse@freedesktop.org> | |
29 | * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> | |
30 | * Dave Airlie | |
31 | */ | |
32 | #include <ttm/ttm_bo_api.h> | |
33 | #include <ttm/ttm_bo_driver.h> | |
34 | #include <ttm/ttm_placement.h> | |
35 | #include <ttm/ttm_module.h> | |
36 | #include <ttm/ttm_page_alloc.h> | |
37 | #include <drm/drmP.h> | |
38 | #include <drm/amdgpu_drm.h> | |
39 | #include <linux/seq_file.h> | |
40 | #include <linux/slab.h> | |
41 | #include <linux/swiotlb.h> | |
42 | #include <linux/swap.h> | |
43 | #include <linux/pagemap.h> | |
44 | #include <linux/debugfs.h> | |
45 | #include "amdgpu.h" | |
46 | #include "bif/bif_4_1_d.h" | |
47 | ||
48 | #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT) | |
49 | ||
50 | static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev); | |
51 | static void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev); | |
52 | ||
53 | static struct amdgpu_device *amdgpu_get_adev(struct ttm_bo_device *bdev) | |
54 | { | |
55 | struct amdgpu_mman *mman; | |
56 | struct amdgpu_device *adev; | |
57 | ||
58 | mman = container_of(bdev, struct amdgpu_mman, bdev); | |
59 | adev = container_of(mman, struct amdgpu_device, mman); | |
60 | return adev; | |
61 | } | |
62 | ||
63 | ||
64 | /* | |
65 | * Global memory. | |
66 | */ | |
67 | static int amdgpu_ttm_mem_global_init(struct drm_global_reference *ref) | |
68 | { | |
69 | return ttm_mem_global_init(ref->object); | |
70 | } | |
71 | ||
72 | static void amdgpu_ttm_mem_global_release(struct drm_global_reference *ref) | |
73 | { | |
74 | ttm_mem_global_release(ref->object); | |
75 | } | |
76 | ||
77 | static int amdgpu_ttm_global_init(struct amdgpu_device *adev) | |
78 | { | |
79 | struct drm_global_reference *global_ref; | |
80 | int r; | |
81 | ||
82 | adev->mman.mem_global_referenced = false; | |
83 | global_ref = &adev->mman.mem_global_ref; | |
84 | global_ref->global_type = DRM_GLOBAL_TTM_MEM; | |
85 | global_ref->size = sizeof(struct ttm_mem_global); | |
86 | global_ref->init = &amdgpu_ttm_mem_global_init; | |
87 | global_ref->release = &amdgpu_ttm_mem_global_release; | |
88 | r = drm_global_item_ref(global_ref); | |
89 | if (r != 0) { | |
90 | DRM_ERROR("Failed setting up TTM memory accounting " | |
91 | "subsystem.\n"); | |
92 | return r; | |
93 | } | |
94 | ||
95 | adev->mman.bo_global_ref.mem_glob = | |
96 | adev->mman.mem_global_ref.object; | |
97 | global_ref = &adev->mman.bo_global_ref.ref; | |
98 | global_ref->global_type = DRM_GLOBAL_TTM_BO; | |
99 | global_ref->size = sizeof(struct ttm_bo_global); | |
100 | global_ref->init = &ttm_bo_global_init; | |
101 | global_ref->release = &ttm_bo_global_release; | |
102 | r = drm_global_item_ref(global_ref); | |
103 | if (r != 0) { | |
104 | DRM_ERROR("Failed setting up TTM BO subsystem.\n"); | |
105 | drm_global_item_unref(&adev->mman.mem_global_ref); | |
106 | return r; | |
107 | } | |
108 | ||
109 | adev->mman.mem_global_referenced = true; | |
110 | return 0; | |
111 | } | |
112 | ||
113 | static void amdgpu_ttm_global_fini(struct amdgpu_device *adev) | |
114 | { | |
115 | if (adev->mman.mem_global_referenced) { | |
116 | drm_global_item_unref(&adev->mman.bo_global_ref.ref); | |
117 | drm_global_item_unref(&adev->mman.mem_global_ref); | |
118 | adev->mman.mem_global_referenced = false; | |
119 | } | |
120 | } | |
121 | ||
122 | static int amdgpu_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags) | |
123 | { | |
124 | return 0; | |
125 | } | |
126 | ||
127 | static int amdgpu_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, | |
128 | struct ttm_mem_type_manager *man) | |
129 | { | |
130 | struct amdgpu_device *adev; | |
131 | ||
132 | adev = amdgpu_get_adev(bdev); | |
133 | ||
134 | switch (type) { | |
135 | case TTM_PL_SYSTEM: | |
136 | /* System memory */ | |
137 | man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; | |
138 | man->available_caching = TTM_PL_MASK_CACHING; | |
139 | man->default_caching = TTM_PL_FLAG_CACHED; | |
140 | break; | |
141 | case TTM_PL_TT: | |
142 | man->func = &ttm_bo_manager_func; | |
143 | man->gpu_offset = adev->mc.gtt_start; | |
144 | man->available_caching = TTM_PL_MASK_CACHING; | |
145 | man->default_caching = TTM_PL_FLAG_CACHED; | |
146 | man->flags = TTM_MEMTYPE_FLAG_MAPPABLE | TTM_MEMTYPE_FLAG_CMA; | |
147 | break; | |
148 | case TTM_PL_VRAM: | |
149 | /* "On-card" video ram */ | |
150 | man->func = &ttm_bo_manager_func; | |
151 | man->gpu_offset = adev->mc.vram_start; | |
152 | man->flags = TTM_MEMTYPE_FLAG_FIXED | | |
153 | TTM_MEMTYPE_FLAG_MAPPABLE; | |
154 | man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC; | |
155 | man->default_caching = TTM_PL_FLAG_WC; | |
156 | break; | |
157 | case AMDGPU_PL_GDS: | |
158 | case AMDGPU_PL_GWS: | |
159 | case AMDGPU_PL_OA: | |
160 | /* On-chip GDS memory*/ | |
161 | man->func = &ttm_bo_manager_func; | |
162 | man->gpu_offset = 0; | |
163 | man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_CMA; | |
164 | man->available_caching = TTM_PL_FLAG_UNCACHED; | |
165 | man->default_caching = TTM_PL_FLAG_UNCACHED; | |
166 | break; | |
167 | default: | |
168 | DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); | |
169 | return -EINVAL; | |
170 | } | |
171 | return 0; | |
172 | } | |
173 | ||
174 | static void amdgpu_evict_flags(struct ttm_buffer_object *bo, | |
175 | struct ttm_placement *placement) | |
176 | { | |
177 | struct amdgpu_bo *rbo; | |
178 | static struct ttm_place placements = { | |
179 | .fpfn = 0, | |
180 | .lpfn = 0, | |
181 | .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM | |
182 | }; | |
183 | ||
184 | if (!amdgpu_ttm_bo_is_amdgpu_bo(bo)) { | |
185 | placement->placement = &placements; | |
186 | placement->busy_placement = &placements; | |
187 | placement->num_placement = 1; | |
188 | placement->num_busy_placement = 1; | |
189 | return; | |
190 | } | |
191 | rbo = container_of(bo, struct amdgpu_bo, tbo); | |
192 | switch (bo->mem.mem_type) { | |
193 | case TTM_PL_VRAM: | |
194 | if (rbo->adev->mman.buffer_funcs_ring->ready == false) | |
195 | amdgpu_ttm_placement_from_domain(rbo, AMDGPU_GEM_DOMAIN_CPU); | |
196 | else | |
197 | amdgpu_ttm_placement_from_domain(rbo, AMDGPU_GEM_DOMAIN_GTT); | |
198 | break; | |
199 | case TTM_PL_TT: | |
200 | default: | |
201 | amdgpu_ttm_placement_from_domain(rbo, AMDGPU_GEM_DOMAIN_CPU); | |
202 | } | |
203 | *placement = rbo->placement; | |
204 | } | |
205 | ||
206 | static int amdgpu_verify_access(struct ttm_buffer_object *bo, struct file *filp) | |
207 | { | |
208 | struct amdgpu_bo *rbo = container_of(bo, struct amdgpu_bo, tbo); | |
209 | ||
210 | return drm_vma_node_verify_access(&rbo->gem_base.vma_node, filp); | |
211 | } | |
212 | ||
213 | static void amdgpu_move_null(struct ttm_buffer_object *bo, | |
214 | struct ttm_mem_reg *new_mem) | |
215 | { | |
216 | struct ttm_mem_reg *old_mem = &bo->mem; | |
217 | ||
218 | BUG_ON(old_mem->mm_node != NULL); | |
219 | *old_mem = *new_mem; | |
220 | new_mem->mm_node = NULL; | |
221 | } | |
222 | ||
223 | static int amdgpu_move_blit(struct ttm_buffer_object *bo, | |
224 | bool evict, bool no_wait_gpu, | |
225 | struct ttm_mem_reg *new_mem, | |
226 | struct ttm_mem_reg *old_mem) | |
227 | { | |
228 | struct amdgpu_device *adev; | |
229 | struct amdgpu_ring *ring; | |
230 | uint64_t old_start, new_start; | |
231 | struct amdgpu_fence *fence; | |
232 | int r; | |
233 | ||
234 | adev = amdgpu_get_adev(bo->bdev); | |
235 | ring = adev->mman.buffer_funcs_ring; | |
236 | old_start = old_mem->start << PAGE_SHIFT; | |
237 | new_start = new_mem->start << PAGE_SHIFT; | |
238 | ||
239 | switch (old_mem->mem_type) { | |
240 | case TTM_PL_VRAM: | |
241 | old_start += adev->mc.vram_start; | |
242 | break; | |
243 | case TTM_PL_TT: | |
244 | old_start += adev->mc.gtt_start; | |
245 | break; | |
246 | default: | |
247 | DRM_ERROR("Unknown placement %d\n", old_mem->mem_type); | |
248 | return -EINVAL; | |
249 | } | |
250 | switch (new_mem->mem_type) { | |
251 | case TTM_PL_VRAM: | |
252 | new_start += adev->mc.vram_start; | |
253 | break; | |
254 | case TTM_PL_TT: | |
255 | new_start += adev->mc.gtt_start; | |
256 | break; | |
257 | default: | |
258 | DRM_ERROR("Unknown placement %d\n", old_mem->mem_type); | |
259 | return -EINVAL; | |
260 | } | |
261 | if (!ring->ready) { | |
262 | DRM_ERROR("Trying to move memory with ring turned off.\n"); | |
263 | return -EINVAL; | |
264 | } | |
265 | ||
266 | BUILD_BUG_ON((PAGE_SIZE % AMDGPU_GPU_PAGE_SIZE) != 0); | |
267 | ||
268 | r = amdgpu_copy_buffer(ring, old_start, new_start, | |
269 | new_mem->num_pages * PAGE_SIZE, /* bytes */ | |
270 | bo->resv, &fence); | |
271 | /* FIXME: handle copy error */ | |
272 | r = ttm_bo_move_accel_cleanup(bo, &fence->base, | |
273 | evict, no_wait_gpu, new_mem); | |
274 | amdgpu_fence_unref(&fence); | |
275 | return r; | |
276 | } | |
277 | ||
278 | static int amdgpu_move_vram_ram(struct ttm_buffer_object *bo, | |
279 | bool evict, bool interruptible, | |
280 | bool no_wait_gpu, | |
281 | struct ttm_mem_reg *new_mem) | |
282 | { | |
283 | struct amdgpu_device *adev; | |
284 | struct ttm_mem_reg *old_mem = &bo->mem; | |
285 | struct ttm_mem_reg tmp_mem; | |
286 | struct ttm_place placements; | |
287 | struct ttm_placement placement; | |
288 | int r; | |
289 | ||
290 | adev = amdgpu_get_adev(bo->bdev); | |
291 | tmp_mem = *new_mem; | |
292 | tmp_mem.mm_node = NULL; | |
293 | placement.num_placement = 1; | |
294 | placement.placement = &placements; | |
295 | placement.num_busy_placement = 1; | |
296 | placement.busy_placement = &placements; | |
297 | placements.fpfn = 0; | |
298 | placements.lpfn = 0; | |
299 | placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT; | |
300 | r = ttm_bo_mem_space(bo, &placement, &tmp_mem, | |
301 | interruptible, no_wait_gpu); | |
302 | if (unlikely(r)) { | |
303 | return r; | |
304 | } | |
305 | ||
306 | r = ttm_tt_set_placement_caching(bo->ttm, tmp_mem.placement); | |
307 | if (unlikely(r)) { | |
308 | goto out_cleanup; | |
309 | } | |
310 | ||
311 | r = ttm_tt_bind(bo->ttm, &tmp_mem); | |
312 | if (unlikely(r)) { | |
313 | goto out_cleanup; | |
314 | } | |
315 | r = amdgpu_move_blit(bo, true, no_wait_gpu, &tmp_mem, old_mem); | |
316 | if (unlikely(r)) { | |
317 | goto out_cleanup; | |
318 | } | |
319 | r = ttm_bo_move_ttm(bo, true, no_wait_gpu, new_mem); | |
320 | out_cleanup: | |
321 | ttm_bo_mem_put(bo, &tmp_mem); | |
322 | return r; | |
323 | } | |
324 | ||
325 | static int amdgpu_move_ram_vram(struct ttm_buffer_object *bo, | |
326 | bool evict, bool interruptible, | |
327 | bool no_wait_gpu, | |
328 | struct ttm_mem_reg *new_mem) | |
329 | { | |
330 | struct amdgpu_device *adev; | |
331 | struct ttm_mem_reg *old_mem = &bo->mem; | |
332 | struct ttm_mem_reg tmp_mem; | |
333 | struct ttm_placement placement; | |
334 | struct ttm_place placements; | |
335 | int r; | |
336 | ||
337 | adev = amdgpu_get_adev(bo->bdev); | |
338 | tmp_mem = *new_mem; | |
339 | tmp_mem.mm_node = NULL; | |
340 | placement.num_placement = 1; | |
341 | placement.placement = &placements; | |
342 | placement.num_busy_placement = 1; | |
343 | placement.busy_placement = &placements; | |
344 | placements.fpfn = 0; | |
345 | placements.lpfn = 0; | |
346 | placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT; | |
347 | r = ttm_bo_mem_space(bo, &placement, &tmp_mem, | |
348 | interruptible, no_wait_gpu); | |
349 | if (unlikely(r)) { | |
350 | return r; | |
351 | } | |
352 | r = ttm_bo_move_ttm(bo, true, no_wait_gpu, &tmp_mem); | |
353 | if (unlikely(r)) { | |
354 | goto out_cleanup; | |
355 | } | |
356 | r = amdgpu_move_blit(bo, true, no_wait_gpu, new_mem, old_mem); | |
357 | if (unlikely(r)) { | |
358 | goto out_cleanup; | |
359 | } | |
360 | out_cleanup: | |
361 | ttm_bo_mem_put(bo, &tmp_mem); | |
362 | return r; | |
363 | } | |
364 | ||
365 | static int amdgpu_bo_move(struct ttm_buffer_object *bo, | |
366 | bool evict, bool interruptible, | |
367 | bool no_wait_gpu, | |
368 | struct ttm_mem_reg *new_mem) | |
369 | { | |
370 | struct amdgpu_device *adev; | |
371 | struct ttm_mem_reg *old_mem = &bo->mem; | |
372 | int r; | |
373 | ||
374 | adev = amdgpu_get_adev(bo->bdev); | |
375 | if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { | |
376 | amdgpu_move_null(bo, new_mem); | |
377 | return 0; | |
378 | } | |
379 | if ((old_mem->mem_type == TTM_PL_TT && | |
380 | new_mem->mem_type == TTM_PL_SYSTEM) || | |
381 | (old_mem->mem_type == TTM_PL_SYSTEM && | |
382 | new_mem->mem_type == TTM_PL_TT)) { | |
383 | /* bind is enough */ | |
384 | amdgpu_move_null(bo, new_mem); | |
385 | return 0; | |
386 | } | |
387 | if (adev->mman.buffer_funcs == NULL || | |
388 | adev->mman.buffer_funcs_ring == NULL || | |
389 | !adev->mman.buffer_funcs_ring->ready) { | |
390 | /* use memcpy */ | |
391 | goto memcpy; | |
392 | } | |
393 | ||
394 | if (old_mem->mem_type == TTM_PL_VRAM && | |
395 | new_mem->mem_type == TTM_PL_SYSTEM) { | |
396 | r = amdgpu_move_vram_ram(bo, evict, interruptible, | |
397 | no_wait_gpu, new_mem); | |
398 | } else if (old_mem->mem_type == TTM_PL_SYSTEM && | |
399 | new_mem->mem_type == TTM_PL_VRAM) { | |
400 | r = amdgpu_move_ram_vram(bo, evict, interruptible, | |
401 | no_wait_gpu, new_mem); | |
402 | } else { | |
403 | r = amdgpu_move_blit(bo, evict, no_wait_gpu, new_mem, old_mem); | |
404 | } | |
405 | ||
406 | if (r) { | |
407 | memcpy: | |
408 | r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem); | |
409 | if (r) { | |
410 | return r; | |
411 | } | |
412 | } | |
413 | ||
414 | /* update statistics */ | |
415 | atomic64_add((u64)bo->num_pages << PAGE_SHIFT, &adev->num_bytes_moved); | |
416 | return 0; | |
417 | } | |
418 | ||
419 | static int amdgpu_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
420 | { | |
421 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
422 | struct amdgpu_device *adev = amdgpu_get_adev(bdev); | |
423 | ||
424 | mem->bus.addr = NULL; | |
425 | mem->bus.offset = 0; | |
426 | mem->bus.size = mem->num_pages << PAGE_SHIFT; | |
427 | mem->bus.base = 0; | |
428 | mem->bus.is_iomem = false; | |
429 | if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) | |
430 | return -EINVAL; | |
431 | switch (mem->mem_type) { | |
432 | case TTM_PL_SYSTEM: | |
433 | /* system memory */ | |
434 | return 0; | |
435 | case TTM_PL_TT: | |
436 | break; | |
437 | case TTM_PL_VRAM: | |
438 | mem->bus.offset = mem->start << PAGE_SHIFT; | |
439 | /* check if it's visible */ | |
440 | if ((mem->bus.offset + mem->bus.size) > adev->mc.visible_vram_size) | |
441 | return -EINVAL; | |
442 | mem->bus.base = adev->mc.aper_base; | |
443 | mem->bus.is_iomem = true; | |
444 | #ifdef __alpha__ | |
445 | /* | |
446 | * Alpha: use bus.addr to hold the ioremap() return, | |
447 | * so we can modify bus.base below. | |
448 | */ | |
449 | if (mem->placement & TTM_PL_FLAG_WC) | |
450 | mem->bus.addr = | |
451 | ioremap_wc(mem->bus.base + mem->bus.offset, | |
452 | mem->bus.size); | |
453 | else | |
454 | mem->bus.addr = | |
455 | ioremap_nocache(mem->bus.base + mem->bus.offset, | |
456 | mem->bus.size); | |
457 | ||
458 | /* | |
459 | * Alpha: Use just the bus offset plus | |
460 | * the hose/domain memory base for bus.base. | |
461 | * It then can be used to build PTEs for VRAM | |
462 | * access, as done in ttm_bo_vm_fault(). | |
463 | */ | |
464 | mem->bus.base = (mem->bus.base & 0x0ffffffffUL) + | |
465 | adev->ddev->hose->dense_mem_base; | |
466 | #endif | |
467 | break; | |
468 | default: | |
469 | return -EINVAL; | |
470 | } | |
471 | return 0; | |
472 | } | |
473 | ||
474 | static void amdgpu_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
475 | { | |
476 | } | |
477 | ||
478 | /* | |
479 | * TTM backend functions. | |
480 | */ | |
481 | struct amdgpu_ttm_tt { | |
482 | struct ttm_dma_tt ttm; | |
483 | struct amdgpu_device *adev; | |
484 | u64 offset; | |
485 | uint64_t userptr; | |
486 | struct mm_struct *usermm; | |
487 | uint32_t userflags; | |
488 | }; | |
489 | ||
490 | /* prepare the sg table with the user pages */ | |
491 | static int amdgpu_ttm_tt_pin_userptr(struct ttm_tt *ttm) | |
492 | { | |
493 | struct amdgpu_device *adev = amdgpu_get_adev(ttm->bdev); | |
494 | struct amdgpu_ttm_tt *gtt = (void *)ttm; | |
495 | unsigned pinned = 0, nents; | |
496 | int r; | |
497 | ||
498 | int write = !(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY); | |
499 | enum dma_data_direction direction = write ? | |
500 | DMA_BIDIRECTIONAL : DMA_TO_DEVICE; | |
501 | ||
502 | if (current->mm != gtt->usermm) | |
503 | return -EPERM; | |
504 | ||
505 | if (gtt->userflags & AMDGPU_GEM_USERPTR_ANONONLY) { | |
506 | /* check that we only pin down anonymous memory | |
507 | to prevent problems with writeback */ | |
508 | unsigned long end = gtt->userptr + ttm->num_pages * PAGE_SIZE; | |
509 | struct vm_area_struct *vma; | |
510 | ||
511 | vma = find_vma(gtt->usermm, gtt->userptr); | |
512 | if (!vma || vma->vm_file || vma->vm_end < end) | |
513 | return -EPERM; | |
514 | } | |
515 | ||
516 | do { | |
517 | unsigned num_pages = ttm->num_pages - pinned; | |
518 | uint64_t userptr = gtt->userptr + pinned * PAGE_SIZE; | |
519 | struct page **pages = ttm->pages + pinned; | |
520 | ||
521 | r = get_user_pages(current, current->mm, userptr, num_pages, | |
522 | write, 0, pages, NULL); | |
523 | if (r < 0) | |
524 | goto release_pages; | |
525 | ||
526 | pinned += r; | |
527 | ||
528 | } while (pinned < ttm->num_pages); | |
529 | ||
530 | r = sg_alloc_table_from_pages(ttm->sg, ttm->pages, ttm->num_pages, 0, | |
531 | ttm->num_pages << PAGE_SHIFT, | |
532 | GFP_KERNEL); | |
533 | if (r) | |
534 | goto release_sg; | |
535 | ||
536 | r = -ENOMEM; | |
537 | nents = dma_map_sg(adev->dev, ttm->sg->sgl, ttm->sg->nents, direction); | |
538 | if (nents != ttm->sg->nents) | |
539 | goto release_sg; | |
540 | ||
541 | drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages, | |
542 | gtt->ttm.dma_address, ttm->num_pages); | |
543 | ||
544 | return 0; | |
545 | ||
546 | release_sg: | |
547 | kfree(ttm->sg); | |
548 | ||
549 | release_pages: | |
550 | release_pages(ttm->pages, pinned, 0); | |
551 | return r; | |
552 | } | |
553 | ||
554 | static void amdgpu_ttm_tt_unpin_userptr(struct ttm_tt *ttm) | |
555 | { | |
556 | struct amdgpu_device *adev = amdgpu_get_adev(ttm->bdev); | |
557 | struct amdgpu_ttm_tt *gtt = (void *)ttm; | |
558 | struct scatterlist *sg; | |
559 | int i; | |
560 | ||
561 | int write = !(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY); | |
562 | enum dma_data_direction direction = write ? | |
563 | DMA_BIDIRECTIONAL : DMA_TO_DEVICE; | |
564 | ||
565 | /* double check that we don't free the table twice */ | |
566 | if (!ttm->sg->sgl) | |
567 | return; | |
568 | ||
569 | /* free the sg table and pages again */ | |
570 | dma_unmap_sg(adev->dev, ttm->sg->sgl, ttm->sg->nents, direction); | |
571 | ||
572 | for_each_sg(ttm->sg->sgl, sg, ttm->sg->nents, i) { | |
573 | struct page *page = sg_page(sg); | |
574 | ||
575 | if (!(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY)) | |
576 | set_page_dirty(page); | |
577 | ||
578 | mark_page_accessed(page); | |
579 | page_cache_release(page); | |
580 | } | |
581 | ||
582 | sg_free_table(ttm->sg); | |
583 | } | |
584 | ||
585 | static int amdgpu_ttm_backend_bind(struct ttm_tt *ttm, | |
586 | struct ttm_mem_reg *bo_mem) | |
587 | { | |
588 | struct amdgpu_ttm_tt *gtt = (void*)ttm; | |
589 | uint32_t flags = amdgpu_ttm_tt_pte_flags(gtt->adev, ttm, bo_mem); | |
590 | int r; | |
591 | ||
592 | if (gtt->userptr) | |
593 | amdgpu_ttm_tt_pin_userptr(ttm); | |
594 | ||
595 | gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT); | |
596 | if (!ttm->num_pages) { | |
597 | WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n", | |
598 | ttm->num_pages, bo_mem, ttm); | |
599 | } | |
600 | ||
601 | if (bo_mem->mem_type == AMDGPU_PL_GDS || | |
602 | bo_mem->mem_type == AMDGPU_PL_GWS || | |
603 | bo_mem->mem_type == AMDGPU_PL_OA) | |
604 | return -EINVAL; | |
605 | ||
606 | r = amdgpu_gart_bind(gtt->adev, gtt->offset, ttm->num_pages, | |
607 | ttm->pages, gtt->ttm.dma_address, flags); | |
608 | ||
609 | if (r) { | |
610 | DRM_ERROR("failed to bind %lu pages at 0x%08X\n", | |
611 | ttm->num_pages, (unsigned)gtt->offset); | |
612 | return r; | |
613 | } | |
614 | return 0; | |
615 | } | |
616 | ||
617 | static int amdgpu_ttm_backend_unbind(struct ttm_tt *ttm) | |
618 | { | |
619 | struct amdgpu_ttm_tt *gtt = (void *)ttm; | |
620 | ||
621 | /* unbind shouldn't be done for GDS/GWS/OA in ttm_bo_clean_mm */ | |
622 | if (gtt->adev->gart.ready) | |
623 | amdgpu_gart_unbind(gtt->adev, gtt->offset, ttm->num_pages); | |
624 | ||
625 | if (gtt->userptr) | |
626 | amdgpu_ttm_tt_unpin_userptr(ttm); | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
631 | static void amdgpu_ttm_backend_destroy(struct ttm_tt *ttm) | |
632 | { | |
633 | struct amdgpu_ttm_tt *gtt = (void *)ttm; | |
634 | ||
635 | ttm_dma_tt_fini(>t->ttm); | |
636 | kfree(gtt); | |
637 | } | |
638 | ||
639 | static struct ttm_backend_func amdgpu_backend_func = { | |
640 | .bind = &amdgpu_ttm_backend_bind, | |
641 | .unbind = &amdgpu_ttm_backend_unbind, | |
642 | .destroy = &amdgpu_ttm_backend_destroy, | |
643 | }; | |
644 | ||
645 | static struct ttm_tt *amdgpu_ttm_tt_create(struct ttm_bo_device *bdev, | |
646 | unsigned long size, uint32_t page_flags, | |
647 | struct page *dummy_read_page) | |
648 | { | |
649 | struct amdgpu_device *adev; | |
650 | struct amdgpu_ttm_tt *gtt; | |
651 | ||
652 | adev = amdgpu_get_adev(bdev); | |
653 | ||
654 | gtt = kzalloc(sizeof(struct amdgpu_ttm_tt), GFP_KERNEL); | |
655 | if (gtt == NULL) { | |
656 | return NULL; | |
657 | } | |
658 | gtt->ttm.ttm.func = &amdgpu_backend_func; | |
659 | gtt->adev = adev; | |
660 | if (ttm_dma_tt_init(>t->ttm, bdev, size, page_flags, dummy_read_page)) { | |
661 | kfree(gtt); | |
662 | return NULL; | |
663 | } | |
664 | return >t->ttm.ttm; | |
665 | } | |
666 | ||
667 | static int amdgpu_ttm_tt_populate(struct ttm_tt *ttm) | |
668 | { | |
669 | struct amdgpu_device *adev; | |
670 | struct amdgpu_ttm_tt *gtt = (void *)ttm; | |
671 | unsigned i; | |
672 | int r; | |
673 | bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); | |
674 | ||
675 | if (ttm->state != tt_unpopulated) | |
676 | return 0; | |
677 | ||
678 | if (gtt && gtt->userptr) { | |
679 | ttm->sg = kcalloc(1, sizeof(struct sg_table), GFP_KERNEL); | |
680 | if (!ttm->sg) | |
681 | return -ENOMEM; | |
682 | ||
683 | ttm->page_flags |= TTM_PAGE_FLAG_SG; | |
684 | ttm->state = tt_unbound; | |
685 | return 0; | |
686 | } | |
687 | ||
688 | if (slave && ttm->sg) { | |
689 | drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages, | |
690 | gtt->ttm.dma_address, ttm->num_pages); | |
691 | ttm->state = tt_unbound; | |
692 | return 0; | |
693 | } | |
694 | ||
695 | adev = amdgpu_get_adev(ttm->bdev); | |
696 | ||
697 | #ifdef CONFIG_SWIOTLB | |
698 | if (swiotlb_nr_tbl()) { | |
699 | return ttm_dma_populate(>t->ttm, adev->dev); | |
700 | } | |
701 | #endif | |
702 | ||
703 | r = ttm_pool_populate(ttm); | |
704 | if (r) { | |
705 | return r; | |
706 | } | |
707 | ||
708 | for (i = 0; i < ttm->num_pages; i++) { | |
709 | gtt->ttm.dma_address[i] = pci_map_page(adev->pdev, ttm->pages[i], | |
710 | 0, PAGE_SIZE, | |
711 | PCI_DMA_BIDIRECTIONAL); | |
712 | if (pci_dma_mapping_error(adev->pdev, gtt->ttm.dma_address[i])) { | |
713 | while (--i) { | |
714 | pci_unmap_page(adev->pdev, gtt->ttm.dma_address[i], | |
715 | PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); | |
716 | gtt->ttm.dma_address[i] = 0; | |
717 | } | |
718 | ttm_pool_unpopulate(ttm); | |
719 | return -EFAULT; | |
720 | } | |
721 | } | |
722 | return 0; | |
723 | } | |
724 | ||
725 | static void amdgpu_ttm_tt_unpopulate(struct ttm_tt *ttm) | |
726 | { | |
727 | struct amdgpu_device *adev; | |
728 | struct amdgpu_ttm_tt *gtt = (void *)ttm; | |
729 | unsigned i; | |
730 | bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); | |
731 | ||
732 | if (gtt && gtt->userptr) { | |
733 | kfree(ttm->sg); | |
734 | ttm->page_flags &= ~TTM_PAGE_FLAG_SG; | |
735 | return; | |
736 | } | |
737 | ||
738 | if (slave) | |
739 | return; | |
740 | ||
741 | adev = amdgpu_get_adev(ttm->bdev); | |
742 | ||
743 | #ifdef CONFIG_SWIOTLB | |
744 | if (swiotlb_nr_tbl()) { | |
745 | ttm_dma_unpopulate(>t->ttm, adev->dev); | |
746 | return; | |
747 | } | |
748 | #endif | |
749 | ||
750 | for (i = 0; i < ttm->num_pages; i++) { | |
751 | if (gtt->ttm.dma_address[i]) { | |
752 | pci_unmap_page(adev->pdev, gtt->ttm.dma_address[i], | |
753 | PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); | |
754 | } | |
755 | } | |
756 | ||
757 | ttm_pool_unpopulate(ttm); | |
758 | } | |
759 | ||
760 | int amdgpu_ttm_tt_set_userptr(struct ttm_tt *ttm, uint64_t addr, | |
761 | uint32_t flags) | |
762 | { | |
763 | struct amdgpu_ttm_tt *gtt = (void *)ttm; | |
764 | ||
765 | if (gtt == NULL) | |
766 | return -EINVAL; | |
767 | ||
768 | gtt->userptr = addr; | |
769 | gtt->usermm = current->mm; | |
770 | gtt->userflags = flags; | |
771 | return 0; | |
772 | } | |
773 | ||
774 | bool amdgpu_ttm_tt_has_userptr(struct ttm_tt *ttm) | |
775 | { | |
776 | struct amdgpu_ttm_tt *gtt = (void *)ttm; | |
777 | ||
778 | if (gtt == NULL) | |
779 | return false; | |
780 | ||
781 | return !!gtt->userptr; | |
782 | } | |
783 | ||
784 | bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm) | |
785 | { | |
786 | struct amdgpu_ttm_tt *gtt = (void *)ttm; | |
787 | ||
788 | if (gtt == NULL) | |
789 | return false; | |
790 | ||
791 | return !!(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY); | |
792 | } | |
793 | ||
794 | uint32_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm, | |
795 | struct ttm_mem_reg *mem) | |
796 | { | |
797 | uint32_t flags = 0; | |
798 | ||
799 | if (mem && mem->mem_type != TTM_PL_SYSTEM) | |
800 | flags |= AMDGPU_PTE_VALID; | |
801 | ||
802 | if (mem && mem->mem_type == TTM_PL_TT) | |
803 | flags |= AMDGPU_PTE_SYSTEM; | |
804 | ||
805 | if (!ttm || ttm->caching_state == tt_cached) | |
806 | flags |= AMDGPU_PTE_SNOOPED; | |
807 | ||
808 | if (adev->asic_type >= CHIP_TOPAZ) | |
809 | flags |= AMDGPU_PTE_EXECUTABLE; | |
810 | ||
811 | flags |= AMDGPU_PTE_READABLE; | |
812 | ||
813 | if (!amdgpu_ttm_tt_is_readonly(ttm)) | |
814 | flags |= AMDGPU_PTE_WRITEABLE; | |
815 | ||
816 | return flags; | |
817 | } | |
818 | ||
819 | static struct ttm_bo_driver amdgpu_bo_driver = { | |
820 | .ttm_tt_create = &amdgpu_ttm_tt_create, | |
821 | .ttm_tt_populate = &amdgpu_ttm_tt_populate, | |
822 | .ttm_tt_unpopulate = &amdgpu_ttm_tt_unpopulate, | |
823 | .invalidate_caches = &amdgpu_invalidate_caches, | |
824 | .init_mem_type = &amdgpu_init_mem_type, | |
825 | .evict_flags = &amdgpu_evict_flags, | |
826 | .move = &amdgpu_bo_move, | |
827 | .verify_access = &amdgpu_verify_access, | |
828 | .move_notify = &amdgpu_bo_move_notify, | |
829 | .fault_reserve_notify = &amdgpu_bo_fault_reserve_notify, | |
830 | .io_mem_reserve = &amdgpu_ttm_io_mem_reserve, | |
831 | .io_mem_free = &amdgpu_ttm_io_mem_free, | |
832 | }; | |
833 | ||
834 | int amdgpu_ttm_init(struct amdgpu_device *adev) | |
835 | { | |
836 | int r; | |
837 | ||
838 | r = amdgpu_ttm_global_init(adev); | |
839 | if (r) { | |
840 | return r; | |
841 | } | |
842 | /* No others user of address space so set it to 0 */ | |
843 | r = ttm_bo_device_init(&adev->mman.bdev, | |
844 | adev->mman.bo_global_ref.ref.object, | |
845 | &amdgpu_bo_driver, | |
846 | adev->ddev->anon_inode->i_mapping, | |
847 | DRM_FILE_PAGE_OFFSET, | |
848 | adev->need_dma32); | |
849 | if (r) { | |
850 | DRM_ERROR("failed initializing buffer object driver(%d).\n", r); | |
851 | return r; | |
852 | } | |
853 | adev->mman.initialized = true; | |
854 | r = ttm_bo_init_mm(&adev->mman.bdev, TTM_PL_VRAM, | |
855 | adev->mc.real_vram_size >> PAGE_SHIFT); | |
856 | if (r) { | |
857 | DRM_ERROR("Failed initializing VRAM heap.\n"); | |
858 | return r; | |
859 | } | |
860 | /* Change the size here instead of the init above so only lpfn is affected */ | |
861 | amdgpu_ttm_set_active_vram_size(adev, adev->mc.visible_vram_size); | |
862 | ||
863 | r = amdgpu_bo_create(adev, 256 * 1024, PAGE_SIZE, true, | |
864 | AMDGPU_GEM_DOMAIN_VRAM, 0, | |
865 | NULL, &adev->stollen_vga_memory); | |
866 | if (r) { | |
867 | return r; | |
868 | } | |
869 | r = amdgpu_bo_reserve(adev->stollen_vga_memory, false); | |
870 | if (r) | |
871 | return r; | |
872 | r = amdgpu_bo_pin(adev->stollen_vga_memory, AMDGPU_GEM_DOMAIN_VRAM, NULL); | |
873 | amdgpu_bo_unreserve(adev->stollen_vga_memory); | |
874 | if (r) { | |
875 | amdgpu_bo_unref(&adev->stollen_vga_memory); | |
876 | return r; | |
877 | } | |
878 | DRM_INFO("amdgpu: %uM of VRAM memory ready\n", | |
879 | (unsigned) (adev->mc.real_vram_size / (1024 * 1024))); | |
880 | r = ttm_bo_init_mm(&adev->mman.bdev, TTM_PL_TT, | |
881 | adev->mc.gtt_size >> PAGE_SHIFT); | |
882 | if (r) { | |
883 | DRM_ERROR("Failed initializing GTT heap.\n"); | |
884 | return r; | |
885 | } | |
886 | DRM_INFO("amdgpu: %uM of GTT memory ready.\n", | |
887 | (unsigned)(adev->mc.gtt_size / (1024 * 1024))); | |
888 | ||
889 | adev->gds.mem.total_size = adev->gds.mem.total_size << AMDGPU_GDS_SHIFT; | |
890 | adev->gds.mem.gfx_partition_size = adev->gds.mem.gfx_partition_size << AMDGPU_GDS_SHIFT; | |
891 | adev->gds.mem.cs_partition_size = adev->gds.mem.cs_partition_size << AMDGPU_GDS_SHIFT; | |
892 | adev->gds.gws.total_size = adev->gds.gws.total_size << AMDGPU_GWS_SHIFT; | |
893 | adev->gds.gws.gfx_partition_size = adev->gds.gws.gfx_partition_size << AMDGPU_GWS_SHIFT; | |
894 | adev->gds.gws.cs_partition_size = adev->gds.gws.cs_partition_size << AMDGPU_GWS_SHIFT; | |
895 | adev->gds.oa.total_size = adev->gds.oa.total_size << AMDGPU_OA_SHIFT; | |
896 | adev->gds.oa.gfx_partition_size = adev->gds.oa.gfx_partition_size << AMDGPU_OA_SHIFT; | |
897 | adev->gds.oa.cs_partition_size = adev->gds.oa.cs_partition_size << AMDGPU_OA_SHIFT; | |
898 | /* GDS Memory */ | |
899 | r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_GDS, | |
900 | adev->gds.mem.total_size >> PAGE_SHIFT); | |
901 | if (r) { | |
902 | DRM_ERROR("Failed initializing GDS heap.\n"); | |
903 | return r; | |
904 | } | |
905 | ||
906 | /* GWS */ | |
907 | r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_GWS, | |
908 | adev->gds.gws.total_size >> PAGE_SHIFT); | |
909 | if (r) { | |
910 | DRM_ERROR("Failed initializing gws heap.\n"); | |
911 | return r; | |
912 | } | |
913 | ||
914 | /* OA */ | |
915 | r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_OA, | |
916 | adev->gds.oa.total_size >> PAGE_SHIFT); | |
917 | if (r) { | |
918 | DRM_ERROR("Failed initializing oa heap.\n"); | |
919 | return r; | |
920 | } | |
921 | ||
922 | r = amdgpu_ttm_debugfs_init(adev); | |
923 | if (r) { | |
924 | DRM_ERROR("Failed to init debugfs\n"); | |
925 | return r; | |
926 | } | |
927 | return 0; | |
928 | } | |
929 | ||
930 | void amdgpu_ttm_fini(struct amdgpu_device *adev) | |
931 | { | |
932 | int r; | |
933 | ||
934 | if (!adev->mman.initialized) | |
935 | return; | |
936 | amdgpu_ttm_debugfs_fini(adev); | |
937 | if (adev->stollen_vga_memory) { | |
938 | r = amdgpu_bo_reserve(adev->stollen_vga_memory, false); | |
939 | if (r == 0) { | |
940 | amdgpu_bo_unpin(adev->stollen_vga_memory); | |
941 | amdgpu_bo_unreserve(adev->stollen_vga_memory); | |
942 | } | |
943 | amdgpu_bo_unref(&adev->stollen_vga_memory); | |
944 | } | |
945 | ttm_bo_clean_mm(&adev->mman.bdev, TTM_PL_VRAM); | |
946 | ttm_bo_clean_mm(&adev->mman.bdev, TTM_PL_TT); | |
947 | ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_GDS); | |
948 | ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_GWS); | |
949 | ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_OA); | |
950 | ttm_bo_device_release(&adev->mman.bdev); | |
951 | amdgpu_gart_fini(adev); | |
952 | amdgpu_ttm_global_fini(adev); | |
953 | adev->mman.initialized = false; | |
954 | DRM_INFO("amdgpu: ttm finalized\n"); | |
955 | } | |
956 | ||
957 | /* this should only be called at bootup or when userspace | |
958 | * isn't running */ | |
959 | void amdgpu_ttm_set_active_vram_size(struct amdgpu_device *adev, u64 size) | |
960 | { | |
961 | struct ttm_mem_type_manager *man; | |
962 | ||
963 | if (!adev->mman.initialized) | |
964 | return; | |
965 | ||
966 | man = &adev->mman.bdev.man[TTM_PL_VRAM]; | |
967 | /* this just adjusts TTM size idea, which sets lpfn to the correct value */ | |
968 | man->size = size >> PAGE_SHIFT; | |
969 | } | |
970 | ||
971 | static struct vm_operations_struct amdgpu_ttm_vm_ops; | |
972 | static const struct vm_operations_struct *ttm_vm_ops = NULL; | |
973 | ||
974 | static int amdgpu_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
975 | { | |
976 | struct ttm_buffer_object *bo; | |
977 | struct amdgpu_device *adev; | |
978 | int r; | |
979 | ||
980 | bo = (struct ttm_buffer_object *)vma->vm_private_data; | |
981 | if (bo == NULL) { | |
982 | return VM_FAULT_NOPAGE; | |
983 | } | |
984 | adev = amdgpu_get_adev(bo->bdev); | |
985 | down_read(&adev->pm.mclk_lock); | |
986 | r = ttm_vm_ops->fault(vma, vmf); | |
987 | up_read(&adev->pm.mclk_lock); | |
988 | return r; | |
989 | } | |
990 | ||
991 | int amdgpu_mmap(struct file *filp, struct vm_area_struct *vma) | |
992 | { | |
993 | struct drm_file *file_priv; | |
994 | struct amdgpu_device *adev; | |
995 | int r; | |
996 | ||
997 | if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) { | |
998 | return -EINVAL; | |
999 | } | |
1000 | ||
1001 | file_priv = filp->private_data; | |
1002 | adev = file_priv->minor->dev->dev_private; | |
1003 | if (adev == NULL) { | |
1004 | return -EINVAL; | |
1005 | } | |
1006 | r = ttm_bo_mmap(filp, vma, &adev->mman.bdev); | |
1007 | if (unlikely(r != 0)) { | |
1008 | return r; | |
1009 | } | |
1010 | if (unlikely(ttm_vm_ops == NULL)) { | |
1011 | ttm_vm_ops = vma->vm_ops; | |
1012 | amdgpu_ttm_vm_ops = *ttm_vm_ops; | |
1013 | amdgpu_ttm_vm_ops.fault = &amdgpu_ttm_fault; | |
1014 | } | |
1015 | vma->vm_ops = &amdgpu_ttm_vm_ops; | |
1016 | return 0; | |
1017 | } | |
1018 | ||
1019 | int amdgpu_copy_buffer(struct amdgpu_ring *ring, | |
1020 | uint64_t src_offset, | |
1021 | uint64_t dst_offset, | |
1022 | uint32_t byte_count, | |
1023 | struct reservation_object *resv, | |
1024 | struct amdgpu_fence **fence) | |
1025 | { | |
1026 | struct amdgpu_device *adev = ring->adev; | |
1027 | struct amdgpu_sync sync; | |
1028 | uint32_t max_bytes; | |
1029 | unsigned num_loops, num_dw; | |
1030 | unsigned i; | |
1031 | int r; | |
1032 | ||
1033 | /* sync other rings */ | |
1034 | amdgpu_sync_create(&sync); | |
1035 | if (resv) { | |
1036 | r = amdgpu_sync_resv(adev, &sync, resv, false); | |
1037 | if (r) { | |
1038 | DRM_ERROR("sync failed (%d).\n", r); | |
1039 | amdgpu_sync_free(adev, &sync, NULL); | |
1040 | return r; | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | max_bytes = adev->mman.buffer_funcs->copy_max_bytes; | |
1045 | num_loops = DIV_ROUND_UP(byte_count, max_bytes); | |
1046 | num_dw = num_loops * adev->mman.buffer_funcs->copy_num_dw; | |
1047 | ||
1048 | /* for fence and sync */ | |
1049 | num_dw += 64 + AMDGPU_NUM_SYNCS * 8; | |
1050 | ||
1051 | r = amdgpu_ring_lock(ring, num_dw); | |
1052 | if (r) { | |
1053 | DRM_ERROR("ring lock failed (%d).\n", r); | |
1054 | amdgpu_sync_free(adev, &sync, NULL); | |
1055 | return r; | |
1056 | } | |
1057 | ||
1058 | amdgpu_sync_rings(&sync, ring); | |
1059 | ||
1060 | for (i = 0; i < num_loops; i++) { | |
1061 | uint32_t cur_size_in_bytes = min(byte_count, max_bytes); | |
1062 | ||
1063 | amdgpu_emit_copy_buffer(adev, ring, src_offset, dst_offset, | |
1064 | cur_size_in_bytes); | |
1065 | ||
1066 | src_offset += cur_size_in_bytes; | |
1067 | dst_offset += cur_size_in_bytes; | |
1068 | byte_count -= cur_size_in_bytes; | |
1069 | } | |
1070 | ||
1071 | r = amdgpu_fence_emit(ring, AMDGPU_FENCE_OWNER_MOVE, fence); | |
1072 | if (r) { | |
1073 | amdgpu_ring_unlock_undo(ring); | |
1074 | amdgpu_sync_free(adev, &sync, NULL); | |
1075 | return r; | |
1076 | } | |
1077 | ||
1078 | amdgpu_ring_unlock_commit(ring); | |
1079 | amdgpu_sync_free(adev, &sync, *fence); | |
1080 | ||
1081 | return 0; | |
1082 | } | |
1083 | ||
1084 | #if defined(CONFIG_DEBUG_FS) | |
1085 | ||
1086 | static int amdgpu_mm_dump_table(struct seq_file *m, void *data) | |
1087 | { | |
1088 | struct drm_info_node *node = (struct drm_info_node *)m->private; | |
1089 | unsigned ttm_pl = *(int *)node->info_ent->data; | |
1090 | struct drm_device *dev = node->minor->dev; | |
1091 | struct amdgpu_device *adev = dev->dev_private; | |
1092 | struct drm_mm *mm = (struct drm_mm *)adev->mman.bdev.man[ttm_pl].priv; | |
1093 | int ret; | |
1094 | struct ttm_bo_global *glob = adev->mman.bdev.glob; | |
1095 | ||
1096 | spin_lock(&glob->lru_lock); | |
1097 | ret = drm_mm_dump_table(m, mm); | |
1098 | spin_unlock(&glob->lru_lock); | |
1099 | return ret; | |
1100 | } | |
1101 | ||
1102 | static int ttm_pl_vram = TTM_PL_VRAM; | |
1103 | static int ttm_pl_tt = TTM_PL_TT; | |
1104 | ||
1105 | static struct drm_info_list amdgpu_ttm_debugfs_list[] = { | |
1106 | {"amdgpu_vram_mm", amdgpu_mm_dump_table, 0, &ttm_pl_vram}, | |
1107 | {"amdgpu_gtt_mm", amdgpu_mm_dump_table, 0, &ttm_pl_tt}, | |
1108 | {"ttm_page_pool", ttm_page_alloc_debugfs, 0, NULL}, | |
1109 | #ifdef CONFIG_SWIOTLB | |
1110 | {"ttm_dma_page_pool", ttm_dma_page_alloc_debugfs, 0, NULL} | |
1111 | #endif | |
1112 | }; | |
1113 | ||
1114 | static ssize_t amdgpu_ttm_vram_read(struct file *f, char __user *buf, | |
1115 | size_t size, loff_t *pos) | |
1116 | { | |
1117 | struct amdgpu_device *adev = f->f_inode->i_private; | |
1118 | ssize_t result = 0; | |
1119 | int r; | |
1120 | ||
1121 | if (size & 0x3 || *pos & 0x3) | |
1122 | return -EINVAL; | |
1123 | ||
1124 | while (size) { | |
1125 | unsigned long flags; | |
1126 | uint32_t value; | |
1127 | ||
1128 | if (*pos >= adev->mc.mc_vram_size) | |
1129 | return result; | |
1130 | ||
1131 | spin_lock_irqsave(&adev->mmio_idx_lock, flags); | |
1132 | WREG32(mmMM_INDEX, ((uint32_t)*pos) | 0x80000000); | |
1133 | WREG32(mmMM_INDEX_HI, *pos >> 31); | |
1134 | value = RREG32(mmMM_DATA); | |
1135 | spin_unlock_irqrestore(&adev->mmio_idx_lock, flags); | |
1136 | ||
1137 | r = put_user(value, (uint32_t *)buf); | |
1138 | if (r) | |
1139 | return r; | |
1140 | ||
1141 | result += 4; | |
1142 | buf += 4; | |
1143 | *pos += 4; | |
1144 | size -= 4; | |
1145 | } | |
1146 | ||
1147 | return result; | |
1148 | } | |
1149 | ||
1150 | static const struct file_operations amdgpu_ttm_vram_fops = { | |
1151 | .owner = THIS_MODULE, | |
1152 | .read = amdgpu_ttm_vram_read, | |
1153 | .llseek = default_llseek | |
1154 | }; | |
1155 | ||
1156 | static ssize_t amdgpu_ttm_gtt_read(struct file *f, char __user *buf, | |
1157 | size_t size, loff_t *pos) | |
1158 | { | |
1159 | struct amdgpu_device *adev = f->f_inode->i_private; | |
1160 | ssize_t result = 0; | |
1161 | int r; | |
1162 | ||
1163 | while (size) { | |
1164 | loff_t p = *pos / PAGE_SIZE; | |
1165 | unsigned off = *pos & ~PAGE_MASK; | |
1166 | size_t cur_size = min_t(size_t, size, PAGE_SIZE - off); | |
1167 | struct page *page; | |
1168 | void *ptr; | |
1169 | ||
1170 | if (p >= adev->gart.num_cpu_pages) | |
1171 | return result; | |
1172 | ||
1173 | page = adev->gart.pages[p]; | |
1174 | if (page) { | |
1175 | ptr = kmap(page); | |
1176 | ptr += off; | |
1177 | ||
1178 | r = copy_to_user(buf, ptr, cur_size); | |
1179 | kunmap(adev->gart.pages[p]); | |
1180 | } else | |
1181 | r = clear_user(buf, cur_size); | |
1182 | ||
1183 | if (r) | |
1184 | return -EFAULT; | |
1185 | ||
1186 | result += cur_size; | |
1187 | buf += cur_size; | |
1188 | *pos += cur_size; | |
1189 | size -= cur_size; | |
1190 | } | |
1191 | ||
1192 | return result; | |
1193 | } | |
1194 | ||
1195 | static const struct file_operations amdgpu_ttm_gtt_fops = { | |
1196 | .owner = THIS_MODULE, | |
1197 | .read = amdgpu_ttm_gtt_read, | |
1198 | .llseek = default_llseek | |
1199 | }; | |
1200 | ||
1201 | #endif | |
1202 | ||
1203 | static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev) | |
1204 | { | |
1205 | #if defined(CONFIG_DEBUG_FS) | |
1206 | unsigned count; | |
1207 | ||
1208 | struct drm_minor *minor = adev->ddev->primary; | |
1209 | struct dentry *ent, *root = minor->debugfs_root; | |
1210 | ||
1211 | ent = debugfs_create_file("amdgpu_vram", S_IFREG | S_IRUGO, root, | |
1212 | adev, &amdgpu_ttm_vram_fops); | |
1213 | if (IS_ERR(ent)) | |
1214 | return PTR_ERR(ent); | |
1215 | i_size_write(ent->d_inode, adev->mc.mc_vram_size); | |
1216 | adev->mman.vram = ent; | |
1217 | ||
1218 | ent = debugfs_create_file("amdgpu_gtt", S_IFREG | S_IRUGO, root, | |
1219 | adev, &amdgpu_ttm_gtt_fops); | |
1220 | if (IS_ERR(ent)) | |
1221 | return PTR_ERR(ent); | |
1222 | i_size_write(ent->d_inode, adev->mc.gtt_size); | |
1223 | adev->mman.gtt = ent; | |
1224 | ||
1225 | count = ARRAY_SIZE(amdgpu_ttm_debugfs_list); | |
1226 | ||
1227 | #ifdef CONFIG_SWIOTLB | |
1228 | if (!swiotlb_nr_tbl()) | |
1229 | --count; | |
1230 | #endif | |
1231 | ||
1232 | return amdgpu_debugfs_add_files(adev, amdgpu_ttm_debugfs_list, count); | |
1233 | #else | |
1234 | ||
1235 | return 0; | |
1236 | #endif | |
1237 | } | |
1238 | ||
1239 | static void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev) | |
1240 | { | |
1241 | #if defined(CONFIG_DEBUG_FS) | |
1242 | ||
1243 | debugfs_remove(adev->mman.vram); | |
1244 | adev->mman.vram = NULL; | |
1245 | ||
1246 | debugfs_remove(adev->mman.gtt); | |
1247 | adev->mman.gtt = NULL; | |
1248 | #endif | |
1249 | } |