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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
33#include <linux/debugfs.h>
34#include <linux/dma-mapping.h>
35#include <linux/pagemap.h>
36#include <linux/pci.h>
37#include <linux/seq_file.h>
38#include <linux/slab.h>
39#include <linux/swap.h>
40
41#include <drm/drm_device.h>
42#include <drm/drm_file.h>
43#include <drm/drm_prime.h>
44#include <drm/radeon_drm.h>
45#include <drm/ttm/ttm_bo.h>
46#include <drm/ttm/ttm_placement.h>
47#include <drm/ttm/ttm_range_manager.h>
48#include <drm/ttm/ttm_tt.h>
49
50#include "radeon_reg.h"
51#include "radeon.h"
52#include "radeon_ttm.h"
53
54static void radeon_ttm_debugfs_init(struct radeon_device *rdev);
55
56static int radeon_ttm_tt_bind(struct ttm_device *bdev, struct ttm_tt *ttm,
57 struct ttm_resource *bo_mem);
58static void radeon_ttm_tt_unbind(struct ttm_device *bdev, struct ttm_tt *ttm);
59
60struct radeon_device *radeon_get_rdev(struct ttm_device *bdev)
61{
62 struct radeon_mman *mman;
63 struct radeon_device *rdev;
64
65 mman = container_of(bdev, struct radeon_mman, bdev);
66 rdev = container_of(mman, struct radeon_device, mman);
67 return rdev;
68}
69
70static int radeon_ttm_init_vram(struct radeon_device *rdev)
71{
72 return ttm_range_man_init(&rdev->mman.bdev, TTM_PL_VRAM,
73 false, rdev->mc.real_vram_size >> PAGE_SHIFT);
74}
75
76static int radeon_ttm_init_gtt(struct radeon_device *rdev)
77{
78 return ttm_range_man_init(&rdev->mman.bdev, TTM_PL_TT,
79 true, rdev->mc.gtt_size >> PAGE_SHIFT);
80}
81
82static void radeon_evict_flags(struct ttm_buffer_object *bo,
83 struct ttm_placement *placement)
84{
85 static const struct ttm_place placements = {
86 .fpfn = 0,
87 .lpfn = 0,
88 .mem_type = TTM_PL_SYSTEM,
89 .flags = 0
90 };
91
92 struct radeon_bo *rbo;
93
94 if (!radeon_ttm_bo_is_radeon_bo(bo)) {
95 placement->placement = &placements;
96 placement->num_placement = 1;
97 return;
98 }
99 rbo = container_of(bo, struct radeon_bo, tbo);
100 switch (bo->resource->mem_type) {
101 case TTM_PL_VRAM:
102 if (rbo->rdev->ring[radeon_copy_ring_index(rbo->rdev)].ready == false)
103 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU);
104 else if (rbo->rdev->mc.visible_vram_size < rbo->rdev->mc.real_vram_size &&
105 bo->resource->start < (rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT)) {
106 unsigned fpfn = rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
107 int i;
108
109 /* Try evicting to the CPU inaccessible part of VRAM
110 * first, but only set GTT as busy placement, so this
111 * BO will be evicted to GTT rather than causing other
112 * BOs to be evicted from VRAM
113 */
114 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM |
115 RADEON_GEM_DOMAIN_GTT);
116 for (i = 0; i < rbo->placement.num_placement; i++) {
117 if (rbo->placements[i].mem_type == TTM_PL_VRAM) {
118 if (rbo->placements[i].fpfn < fpfn)
119 rbo->placements[i].fpfn = fpfn;
120 rbo->placements[0].flags |= TTM_PL_FLAG_DESIRED;
121 }
122 }
123 } else
124 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT);
125 break;
126 case TTM_PL_TT:
127 default:
128 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU);
129 }
130 *placement = rbo->placement;
131}
132
133static int radeon_move_blit(struct ttm_buffer_object *bo,
134 bool evict,
135 struct ttm_resource *new_mem,
136 struct ttm_resource *old_mem)
137{
138 struct radeon_device *rdev;
139 uint64_t old_start, new_start;
140 struct radeon_fence *fence;
141 unsigned num_pages;
142 int r, ridx;
143
144 rdev = radeon_get_rdev(bo->bdev);
145 ridx = radeon_copy_ring_index(rdev);
146 old_start = (u64)old_mem->start << PAGE_SHIFT;
147 new_start = (u64)new_mem->start << PAGE_SHIFT;
148
149 switch (old_mem->mem_type) {
150 case TTM_PL_VRAM:
151 old_start += rdev->mc.vram_start;
152 break;
153 case TTM_PL_TT:
154 old_start += rdev->mc.gtt_start;
155 break;
156 default:
157 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
158 return -EINVAL;
159 }
160 switch (new_mem->mem_type) {
161 case TTM_PL_VRAM:
162 new_start += rdev->mc.vram_start;
163 break;
164 case TTM_PL_TT:
165 new_start += rdev->mc.gtt_start;
166 break;
167 default:
168 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
169 return -EINVAL;
170 }
171 if (!rdev->ring[ridx].ready) {
172 DRM_ERROR("Trying to move memory with ring turned off.\n");
173 return -EINVAL;
174 }
175
176 BUILD_BUG_ON((PAGE_SIZE % RADEON_GPU_PAGE_SIZE) != 0);
177
178 num_pages = PFN_UP(new_mem->size) * (PAGE_SIZE / RADEON_GPU_PAGE_SIZE);
179 fence = radeon_copy(rdev, old_start, new_start, num_pages, bo->base.resv);
180 if (IS_ERR(fence))
181 return PTR_ERR(fence);
182
183 r = ttm_bo_move_accel_cleanup(bo, &fence->base, evict, false, new_mem);
184 radeon_fence_unref(&fence);
185 return r;
186}
187
188static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict,
189 struct ttm_operation_ctx *ctx,
190 struct ttm_resource *new_mem,
191 struct ttm_place *hop)
192{
193 struct ttm_resource *old_mem = bo->resource;
194 struct radeon_device *rdev;
195 int r;
196
197 if (new_mem->mem_type == TTM_PL_TT) {
198 r = radeon_ttm_tt_bind(bo->bdev, bo->ttm, new_mem);
199 if (r)
200 return r;
201 }
202
203 r = ttm_bo_wait_ctx(bo, ctx);
204 if (r)
205 return r;
206
207 rdev = radeon_get_rdev(bo->bdev);
208 if (!old_mem || (old_mem->mem_type == TTM_PL_SYSTEM &&
209 bo->ttm == NULL)) {
210 ttm_bo_move_null(bo, new_mem);
211 goto out;
212 }
213 if (old_mem->mem_type == TTM_PL_SYSTEM &&
214 new_mem->mem_type == TTM_PL_TT) {
215 ttm_bo_move_null(bo, new_mem);
216 goto out;
217 }
218
219 if (old_mem->mem_type == TTM_PL_TT &&
220 new_mem->mem_type == TTM_PL_SYSTEM) {
221 radeon_ttm_tt_unbind(bo->bdev, bo->ttm);
222 ttm_bo_move_null(bo, new_mem);
223 goto out;
224 }
225 if (rdev->ring[radeon_copy_ring_index(rdev)].ready &&
226 rdev->asic->copy.copy != NULL) {
227 if ((old_mem->mem_type == TTM_PL_SYSTEM &&
228 new_mem->mem_type == TTM_PL_VRAM) ||
229 (old_mem->mem_type == TTM_PL_VRAM &&
230 new_mem->mem_type == TTM_PL_SYSTEM)) {
231 hop->fpfn = 0;
232 hop->lpfn = 0;
233 hop->mem_type = TTM_PL_TT;
234 hop->flags = 0;
235 return -EMULTIHOP;
236 }
237
238 r = radeon_move_blit(bo, evict, new_mem, old_mem);
239 } else {
240 r = -ENODEV;
241 }
242
243 if (r) {
244 r = ttm_bo_move_memcpy(bo, ctx, new_mem);
245 if (r)
246 return r;
247 }
248
249out:
250 /* update statistics */
251 atomic64_add(bo->base.size, &rdev->num_bytes_moved);
252 radeon_bo_move_notify(bo);
253 return 0;
254}
255
256static int radeon_ttm_io_mem_reserve(struct ttm_device *bdev, struct ttm_resource *mem)
257{
258 struct radeon_device *rdev = radeon_get_rdev(bdev);
259 size_t bus_size = (size_t)mem->size;
260
261 switch (mem->mem_type) {
262 case TTM_PL_SYSTEM:
263 /* system memory */
264 return 0;
265 case TTM_PL_TT:
266#if IS_ENABLED(CONFIG_AGP)
267 if (rdev->flags & RADEON_IS_AGP) {
268 /* RADEON_IS_AGP is set only if AGP is active */
269 mem->bus.offset = (mem->start << PAGE_SHIFT) +
270 rdev->mc.agp_base;
271 mem->bus.is_iomem = !rdev->agp->cant_use_aperture;
272 mem->bus.caching = ttm_write_combined;
273 }
274#endif
275 break;
276 case TTM_PL_VRAM:
277 mem->bus.offset = mem->start << PAGE_SHIFT;
278 /* check if it's visible */
279 if ((mem->bus.offset + bus_size) > rdev->mc.visible_vram_size)
280 return -EINVAL;
281 mem->bus.offset += rdev->mc.aper_base;
282 mem->bus.is_iomem = true;
283 mem->bus.caching = ttm_write_combined;
284#ifdef __alpha__
285 /*
286 * Alpha: use bus.addr to hold the ioremap() return,
287 * so we can modify bus.base below.
288 */
289 mem->bus.addr = ioremap_wc(mem->bus.offset, bus_size);
290 if (!mem->bus.addr)
291 return -ENOMEM;
292
293 /*
294 * Alpha: Use just the bus offset plus
295 * the hose/domain memory base for bus.base.
296 * It then can be used to build PTEs for VRAM
297 * access, as done in ttm_bo_vm_fault().
298 */
299 mem->bus.offset = (mem->bus.offset & 0x0ffffffffUL) +
300 rdev->hose->dense_mem_base;
301#endif
302 break;
303 default:
304 return -EINVAL;
305 }
306 return 0;
307}
308
309/*
310 * TTM backend functions.
311 */
312struct radeon_ttm_tt {
313 struct ttm_tt ttm;
314 u64 offset;
315
316 uint64_t userptr;
317 struct mm_struct *usermm;
318 uint32_t userflags;
319 bool bound;
320};
321
322/* prepare the sg table with the user pages */
323static int radeon_ttm_tt_pin_userptr(struct ttm_device *bdev, struct ttm_tt *ttm)
324{
325 struct radeon_device *rdev = radeon_get_rdev(bdev);
326 struct radeon_ttm_tt *gtt = (void *)ttm;
327 unsigned pinned = 0;
328 int r;
329
330 int write = !(gtt->userflags & RADEON_GEM_USERPTR_READONLY);
331 enum dma_data_direction direction = write ?
332 DMA_BIDIRECTIONAL : DMA_TO_DEVICE;
333
334 if (current->mm != gtt->usermm)
335 return -EPERM;
336
337 if (gtt->userflags & RADEON_GEM_USERPTR_ANONONLY) {
338 /* check that we only pin down anonymous memory
339 to prevent problems with writeback */
340 unsigned long end = gtt->userptr + (u64)ttm->num_pages * PAGE_SIZE;
341 struct vm_area_struct *vma;
342 vma = find_vma(gtt->usermm, gtt->userptr);
343 if (!vma || vma->vm_file || vma->vm_end < end)
344 return -EPERM;
345 }
346
347 do {
348 unsigned num_pages = ttm->num_pages - pinned;
349 uint64_t userptr = gtt->userptr + pinned * PAGE_SIZE;
350 struct page **pages = ttm->pages + pinned;
351
352 r = get_user_pages(userptr, num_pages, write ? FOLL_WRITE : 0,
353 pages);
354 if (r < 0)
355 goto release_pages;
356
357 pinned += r;
358
359 } while (pinned < ttm->num_pages);
360
361 r = sg_alloc_table_from_pages(ttm->sg, ttm->pages, ttm->num_pages, 0,
362 (u64)ttm->num_pages << PAGE_SHIFT,
363 GFP_KERNEL);
364 if (r)
365 goto release_sg;
366
367 r = dma_map_sgtable(rdev->dev, ttm->sg, direction, 0);
368 if (r)
369 goto release_sg;
370
371 drm_prime_sg_to_dma_addr_array(ttm->sg, gtt->ttm.dma_address,
372 ttm->num_pages);
373
374 return 0;
375
376release_sg:
377 kfree(ttm->sg);
378
379release_pages:
380 release_pages(ttm->pages, pinned);
381 return r;
382}
383
384static void radeon_ttm_tt_unpin_userptr(struct ttm_device *bdev, struct ttm_tt *ttm)
385{
386 struct radeon_device *rdev = radeon_get_rdev(bdev);
387 struct radeon_ttm_tt *gtt = (void *)ttm;
388 struct sg_page_iter sg_iter;
389
390 int write = !(gtt->userflags & RADEON_GEM_USERPTR_READONLY);
391 enum dma_data_direction direction = write ?
392 DMA_BIDIRECTIONAL : DMA_TO_DEVICE;
393
394 /* double check that we don't free the table twice */
395 if (!ttm->sg || !ttm->sg->sgl)
396 return;
397
398 /* free the sg table and pages again */
399 dma_unmap_sgtable(rdev->dev, ttm->sg, direction, 0);
400
401 for_each_sgtable_page(ttm->sg, &sg_iter, 0) {
402 struct page *page = sg_page_iter_page(&sg_iter);
403 if (!(gtt->userflags & RADEON_GEM_USERPTR_READONLY))
404 set_page_dirty(page);
405
406 mark_page_accessed(page);
407 put_page(page);
408 }
409
410 sg_free_table(ttm->sg);
411}
412
413static bool radeon_ttm_backend_is_bound(struct ttm_tt *ttm)
414{
415 struct radeon_ttm_tt *gtt = (void*)ttm;
416
417 return (gtt->bound);
418}
419
420static int radeon_ttm_backend_bind(struct ttm_device *bdev,
421 struct ttm_tt *ttm,
422 struct ttm_resource *bo_mem)
423{
424 struct radeon_ttm_tt *gtt = (void*)ttm;
425 struct radeon_device *rdev = radeon_get_rdev(bdev);
426 uint32_t flags = RADEON_GART_PAGE_VALID | RADEON_GART_PAGE_READ |
427 RADEON_GART_PAGE_WRITE;
428 int r;
429
430 if (gtt->bound)
431 return 0;
432
433 if (gtt->userptr) {
434 radeon_ttm_tt_pin_userptr(bdev, ttm);
435 flags &= ~RADEON_GART_PAGE_WRITE;
436 }
437
438 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
439 if (!ttm->num_pages) {
440 WARN(1, "nothing to bind %u pages for mreg %p back %p!\n",
441 ttm->num_pages, bo_mem, ttm);
442 }
443 if (ttm->caching == ttm_cached)
444 flags |= RADEON_GART_PAGE_SNOOP;
445 r = radeon_gart_bind(rdev, gtt->offset, ttm->num_pages,
446 ttm->pages, gtt->ttm.dma_address, flags);
447 if (r) {
448 DRM_ERROR("failed to bind %u pages at 0x%08X\n",
449 ttm->num_pages, (unsigned)gtt->offset);
450 return r;
451 }
452 gtt->bound = true;
453 return 0;
454}
455
456static void radeon_ttm_backend_unbind(struct ttm_device *bdev, struct ttm_tt *ttm)
457{
458 struct radeon_ttm_tt *gtt = (void *)ttm;
459 struct radeon_device *rdev = radeon_get_rdev(bdev);
460
461 if (gtt->userptr)
462 radeon_ttm_tt_unpin_userptr(bdev, ttm);
463
464 if (!gtt->bound)
465 return;
466
467 radeon_gart_unbind(rdev, gtt->offset, ttm->num_pages);
468
469 gtt->bound = false;
470}
471
472static void radeon_ttm_backend_destroy(struct ttm_device *bdev, struct ttm_tt *ttm)
473{
474 struct radeon_ttm_tt *gtt = (void *)ttm;
475
476 ttm_tt_fini(>t->ttm);
477 kfree(gtt);
478}
479
480static struct ttm_tt *radeon_ttm_tt_create(struct ttm_buffer_object *bo,
481 uint32_t page_flags)
482{
483 struct radeon_ttm_tt *gtt;
484 enum ttm_caching caching;
485 struct radeon_bo *rbo;
486#if IS_ENABLED(CONFIG_AGP)
487 struct radeon_device *rdev = radeon_get_rdev(bo->bdev);
488
489 if (rdev->flags & RADEON_IS_AGP) {
490 return ttm_agp_tt_create(bo, rdev->agp->bridge, page_flags);
491 }
492#endif
493 rbo = container_of(bo, struct radeon_bo, tbo);
494
495 gtt = kzalloc(sizeof(struct radeon_ttm_tt), GFP_KERNEL);
496 if (gtt == NULL) {
497 return NULL;
498 }
499
500 if (rbo->flags & RADEON_GEM_GTT_UC)
501 caching = ttm_uncached;
502 else if (rbo->flags & RADEON_GEM_GTT_WC)
503 caching = ttm_write_combined;
504 else
505 caching = ttm_cached;
506
507 if (ttm_sg_tt_init(>t->ttm, bo, page_flags, caching)) {
508 kfree(gtt);
509 return NULL;
510 }
511 return >t->ttm;
512}
513
514static struct radeon_ttm_tt *radeon_ttm_tt_to_gtt(struct radeon_device *rdev,
515 struct ttm_tt *ttm)
516{
517#if IS_ENABLED(CONFIG_AGP)
518 if (rdev->flags & RADEON_IS_AGP)
519 return NULL;
520#endif
521
522 if (!ttm)
523 return NULL;
524 return container_of(ttm, struct radeon_ttm_tt, ttm);
525}
526
527static int radeon_ttm_tt_populate(struct ttm_device *bdev,
528 struct ttm_tt *ttm,
529 struct ttm_operation_ctx *ctx)
530{
531 struct radeon_device *rdev = radeon_get_rdev(bdev);
532 struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm);
533 bool slave = !!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL);
534
535 if (gtt && gtt->userptr) {
536 ttm->sg = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
537 if (!ttm->sg)
538 return -ENOMEM;
539
540 ttm->page_flags |= TTM_TT_FLAG_EXTERNAL;
541 return 0;
542 }
543
544 if (slave && ttm->sg) {
545 drm_prime_sg_to_dma_addr_array(ttm->sg, gtt->ttm.dma_address,
546 ttm->num_pages);
547 return 0;
548 }
549
550 return ttm_pool_alloc(&rdev->mman.bdev.pool, ttm, ctx);
551}
552
553static void radeon_ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm)
554{
555 struct radeon_device *rdev = radeon_get_rdev(bdev);
556 struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm);
557 bool slave = !!(ttm->page_flags & TTM_TT_FLAG_EXTERNAL);
558
559 radeon_ttm_tt_unbind(bdev, ttm);
560
561 if (gtt && gtt->userptr) {
562 kfree(ttm->sg);
563 ttm->page_flags &= ~TTM_TT_FLAG_EXTERNAL;
564 return;
565 }
566
567 if (slave)
568 return;
569
570 return ttm_pool_free(&rdev->mman.bdev.pool, ttm);
571}
572
573int radeon_ttm_tt_set_userptr(struct radeon_device *rdev,
574 struct ttm_tt *ttm, uint64_t addr,
575 uint32_t flags)
576{
577 struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm);
578
579 if (gtt == NULL)
580 return -EINVAL;
581
582 gtt->userptr = addr;
583 gtt->usermm = current->mm;
584 gtt->userflags = flags;
585 return 0;
586}
587
588bool radeon_ttm_tt_is_bound(struct ttm_device *bdev,
589 struct ttm_tt *ttm)
590{
591#if IS_ENABLED(CONFIG_AGP)
592 struct radeon_device *rdev = radeon_get_rdev(bdev);
593 if (rdev->flags & RADEON_IS_AGP)
594 return ttm_agp_is_bound(ttm);
595#endif
596 return radeon_ttm_backend_is_bound(ttm);
597}
598
599static int radeon_ttm_tt_bind(struct ttm_device *bdev,
600 struct ttm_tt *ttm,
601 struct ttm_resource *bo_mem)
602{
603#if IS_ENABLED(CONFIG_AGP)
604 struct radeon_device *rdev = radeon_get_rdev(bdev);
605#endif
606
607 if (!bo_mem)
608 return -EINVAL;
609#if IS_ENABLED(CONFIG_AGP)
610 if (rdev->flags & RADEON_IS_AGP)
611 return ttm_agp_bind(ttm, bo_mem);
612#endif
613
614 return radeon_ttm_backend_bind(bdev, ttm, bo_mem);
615}
616
617static void radeon_ttm_tt_unbind(struct ttm_device *bdev,
618 struct ttm_tt *ttm)
619{
620#if IS_ENABLED(CONFIG_AGP)
621 struct radeon_device *rdev = radeon_get_rdev(bdev);
622
623 if (rdev->flags & RADEON_IS_AGP) {
624 ttm_agp_unbind(ttm);
625 return;
626 }
627#endif
628 radeon_ttm_backend_unbind(bdev, ttm);
629}
630
631static void radeon_ttm_tt_destroy(struct ttm_device *bdev,
632 struct ttm_tt *ttm)
633{
634#if IS_ENABLED(CONFIG_AGP)
635 struct radeon_device *rdev = radeon_get_rdev(bdev);
636
637 if (rdev->flags & RADEON_IS_AGP) {
638 ttm_agp_destroy(ttm);
639 return;
640 }
641#endif
642 radeon_ttm_backend_destroy(bdev, ttm);
643}
644
645bool radeon_ttm_tt_has_userptr(struct radeon_device *rdev,
646 struct ttm_tt *ttm)
647{
648 struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm);
649
650 if (gtt == NULL)
651 return false;
652
653 return !!gtt->userptr;
654}
655
656bool radeon_ttm_tt_is_readonly(struct radeon_device *rdev,
657 struct ttm_tt *ttm)
658{
659 struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm);
660
661 if (gtt == NULL)
662 return false;
663
664 return !!(gtt->userflags & RADEON_GEM_USERPTR_READONLY);
665}
666
667static struct ttm_device_funcs radeon_bo_driver = {
668 .ttm_tt_create = &radeon_ttm_tt_create,
669 .ttm_tt_populate = &radeon_ttm_tt_populate,
670 .ttm_tt_unpopulate = &radeon_ttm_tt_unpopulate,
671 .ttm_tt_destroy = &radeon_ttm_tt_destroy,
672 .eviction_valuable = ttm_bo_eviction_valuable,
673 .evict_flags = &radeon_evict_flags,
674 .move = &radeon_bo_move,
675 .io_mem_reserve = &radeon_ttm_io_mem_reserve,
676};
677
678int radeon_ttm_init(struct radeon_device *rdev)
679{
680 int r;
681
682 /* No others user of address space so set it to 0 */
683 r = ttm_device_init(&rdev->mman.bdev, &radeon_bo_driver, rdev->dev,
684 rdev_to_drm(rdev)->anon_inode->i_mapping,
685 rdev_to_drm(rdev)->vma_offset_manager,
686 rdev->need_swiotlb,
687 dma_addressing_limited(&rdev->pdev->dev));
688 if (r) {
689 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
690 return r;
691 }
692 rdev->mman.initialized = true;
693
694 r = radeon_ttm_init_vram(rdev);
695 if (r) {
696 DRM_ERROR("Failed initializing VRAM heap.\n");
697 return r;
698 }
699 /* Change the size here instead of the init above so only lpfn is affected */
700 radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size);
701
702 r = radeon_bo_create(rdev, 256 * 1024, PAGE_SIZE, true,
703 RADEON_GEM_DOMAIN_VRAM, 0, NULL,
704 NULL, &rdev->stolen_vga_memory);
705 if (r) {
706 return r;
707 }
708 r = radeon_bo_reserve(rdev->stolen_vga_memory, false);
709 if (r)
710 return r;
711 r = radeon_bo_pin(rdev->stolen_vga_memory, RADEON_GEM_DOMAIN_VRAM, NULL);
712 radeon_bo_unreserve(rdev->stolen_vga_memory);
713 if (r) {
714 radeon_bo_unref(&rdev->stolen_vga_memory);
715 return r;
716 }
717 DRM_INFO("radeon: %uM of VRAM memory ready\n",
718 (unsigned) (rdev->mc.real_vram_size / (1024 * 1024)));
719
720 r = radeon_ttm_init_gtt(rdev);
721 if (r) {
722 DRM_ERROR("Failed initializing GTT heap.\n");
723 return r;
724 }
725 DRM_INFO("radeon: %uM of GTT memory ready.\n",
726 (unsigned)(rdev->mc.gtt_size / (1024 * 1024)));
727
728 radeon_ttm_debugfs_init(rdev);
729
730 return 0;
731}
732
733void radeon_ttm_fini(struct radeon_device *rdev)
734{
735 int r;
736
737 if (!rdev->mman.initialized)
738 return;
739
740 if (rdev->stolen_vga_memory) {
741 r = radeon_bo_reserve(rdev->stolen_vga_memory, false);
742 if (r == 0) {
743 radeon_bo_unpin(rdev->stolen_vga_memory);
744 radeon_bo_unreserve(rdev->stolen_vga_memory);
745 }
746 radeon_bo_unref(&rdev->stolen_vga_memory);
747 }
748 ttm_range_man_fini(&rdev->mman.bdev, TTM_PL_VRAM);
749 ttm_range_man_fini(&rdev->mman.bdev, TTM_PL_TT);
750 ttm_device_fini(&rdev->mman.bdev);
751 radeon_gart_fini(rdev);
752 rdev->mman.initialized = false;
753 DRM_INFO("radeon: ttm finalized\n");
754}
755
756/* this should only be called at bootup or when userspace
757 * isn't running */
758void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size)
759{
760 struct ttm_resource_manager *man;
761
762 if (!rdev->mman.initialized)
763 return;
764
765 man = ttm_manager_type(&rdev->mman.bdev, TTM_PL_VRAM);
766 /* this just adjusts TTM size idea, which sets lpfn to the correct value */
767 man->size = size >> PAGE_SHIFT;
768}
769
770#if defined(CONFIG_DEBUG_FS)
771
772static int radeon_ttm_page_pool_show(struct seq_file *m, void *data)
773{
774 struct radeon_device *rdev = m->private;
775
776 return ttm_pool_debugfs(&rdev->mman.bdev.pool, m);
777}
778
779DEFINE_SHOW_ATTRIBUTE(radeon_ttm_page_pool);
780
781static int radeon_ttm_vram_open(struct inode *inode, struct file *filep)
782{
783 struct radeon_device *rdev = inode->i_private;
784 i_size_write(inode, rdev->mc.mc_vram_size);
785 filep->private_data = inode->i_private;
786 return 0;
787}
788
789static ssize_t radeon_ttm_vram_read(struct file *f, char __user *buf,
790 size_t size, loff_t *pos)
791{
792 struct radeon_device *rdev = f->private_data;
793 ssize_t result = 0;
794 int r;
795
796 if (size & 0x3 || *pos & 0x3)
797 return -EINVAL;
798
799 while (size) {
800 unsigned long flags;
801 uint32_t value;
802
803 if (*pos >= rdev->mc.mc_vram_size)
804 return result;
805
806 spin_lock_irqsave(&rdev->mmio_idx_lock, flags);
807 WREG32(RADEON_MM_INDEX, ((uint32_t)*pos) | 0x80000000);
808 if (rdev->family >= CHIP_CEDAR)
809 WREG32(EVERGREEN_MM_INDEX_HI, *pos >> 31);
810 value = RREG32(RADEON_MM_DATA);
811 spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags);
812
813 r = put_user(value, (uint32_t __user *)buf);
814 if (r)
815 return r;
816
817 result += 4;
818 buf += 4;
819 *pos += 4;
820 size -= 4;
821 }
822
823 return result;
824}
825
826static const struct file_operations radeon_ttm_vram_fops = {
827 .owner = THIS_MODULE,
828 .open = radeon_ttm_vram_open,
829 .read = radeon_ttm_vram_read,
830 .llseek = default_llseek
831};
832
833static int radeon_ttm_gtt_open(struct inode *inode, struct file *filep)
834{
835 struct radeon_device *rdev = inode->i_private;
836 i_size_write(inode, rdev->mc.gtt_size);
837 filep->private_data = inode->i_private;
838 return 0;
839}
840
841static ssize_t radeon_ttm_gtt_read(struct file *f, char __user *buf,
842 size_t size, loff_t *pos)
843{
844 struct radeon_device *rdev = f->private_data;
845 ssize_t result = 0;
846 int r;
847
848 while (size) {
849 loff_t p = *pos / PAGE_SIZE;
850 unsigned off = *pos & ~PAGE_MASK;
851 size_t cur_size = min_t(size_t, size, PAGE_SIZE - off);
852 struct page *page;
853 void *ptr;
854
855 if (p >= rdev->gart.num_cpu_pages)
856 return result;
857
858 page = rdev->gart.pages[p];
859 if (page) {
860 ptr = kmap_local_page(page);
861 ptr += off;
862
863 r = copy_to_user(buf, ptr, cur_size);
864 kunmap_local(ptr);
865 } else
866 r = clear_user(buf, cur_size);
867
868 if (r)
869 return -EFAULT;
870
871 result += cur_size;
872 buf += cur_size;
873 *pos += cur_size;
874 size -= cur_size;
875 }
876
877 return result;
878}
879
880static const struct file_operations radeon_ttm_gtt_fops = {
881 .owner = THIS_MODULE,
882 .open = radeon_ttm_gtt_open,
883 .read = radeon_ttm_gtt_read,
884 .llseek = default_llseek
885};
886
887#endif
888
889static void radeon_ttm_debugfs_init(struct radeon_device *rdev)
890{
891#if defined(CONFIG_DEBUG_FS)
892 struct drm_minor *minor = rdev_to_drm(rdev)->primary;
893 struct dentry *root = minor->debugfs_root;
894
895 debugfs_create_file("radeon_vram", 0444, root, rdev,
896 &radeon_ttm_vram_fops);
897 debugfs_create_file("radeon_gtt", 0444, root, rdev,
898 &radeon_ttm_gtt_fops);
899 debugfs_create_file("ttm_page_pool", 0444, root, rdev,
900 &radeon_ttm_page_pool_fops);
901 ttm_resource_manager_create_debugfs(ttm_manager_type(&rdev->mman.bdev,
902 TTM_PL_VRAM),
903 root, "radeon_vram_mm");
904 ttm_resource_manager_create_debugfs(ttm_manager_type(&rdev->mman.bdev,
905 TTM_PL_TT),
906 root, "radeon_gtt_mm");
907#endif
908}
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/radeon_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 "radeon_reg.h"
46#include "radeon.h"
47
48#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
49
50static int radeon_ttm_debugfs_init(struct radeon_device *rdev);
51static void radeon_ttm_debugfs_fini(struct radeon_device *rdev);
52
53static struct radeon_device *radeon_get_rdev(struct ttm_bo_device *bdev)
54{
55 struct radeon_mman *mman;
56 struct radeon_device *rdev;
57
58 mman = container_of(bdev, struct radeon_mman, bdev);
59 rdev = container_of(mman, struct radeon_device, mman);
60 return rdev;
61}
62
63
64/*
65 * Global memory.
66 */
67static int radeon_ttm_mem_global_init(struct drm_global_reference *ref)
68{
69 return ttm_mem_global_init(ref->object);
70}
71
72static void radeon_ttm_mem_global_release(struct drm_global_reference *ref)
73{
74 ttm_mem_global_release(ref->object);
75}
76
77static int radeon_ttm_global_init(struct radeon_device *rdev)
78{
79 struct drm_global_reference *global_ref;
80 int r;
81
82 rdev->mman.mem_global_referenced = false;
83 global_ref = &rdev->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 = &radeon_ttm_mem_global_init;
87 global_ref->release = &radeon_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 rdev->mman.bo_global_ref.mem_glob =
96 rdev->mman.mem_global_ref.object;
97 global_ref = &rdev->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(&rdev->mman.mem_global_ref);
106 return r;
107 }
108
109 rdev->mman.mem_global_referenced = true;
110 return 0;
111}
112
113static void radeon_ttm_global_fini(struct radeon_device *rdev)
114{
115 if (rdev->mman.mem_global_referenced) {
116 drm_global_item_unref(&rdev->mman.bo_global_ref.ref);
117 drm_global_item_unref(&rdev->mman.mem_global_ref);
118 rdev->mman.mem_global_referenced = false;
119 }
120}
121
122static int radeon_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
123{
124 return 0;
125}
126
127static int radeon_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
128 struct ttm_mem_type_manager *man)
129{
130 struct radeon_device *rdev;
131
132 rdev = radeon_get_rdev(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 = rdev->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#if IS_ENABLED(CONFIG_AGP)
148 if (rdev->flags & RADEON_IS_AGP) {
149 if (!rdev->ddev->agp) {
150 DRM_ERROR("AGP is not enabled for memory type %u\n",
151 (unsigned)type);
152 return -EINVAL;
153 }
154 if (!rdev->ddev->agp->cant_use_aperture)
155 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
156 man->available_caching = TTM_PL_FLAG_UNCACHED |
157 TTM_PL_FLAG_WC;
158 man->default_caching = TTM_PL_FLAG_WC;
159 }
160#endif
161 break;
162 case TTM_PL_VRAM:
163 /* "On-card" video ram */
164 man->func = &ttm_bo_manager_func;
165 man->gpu_offset = rdev->mc.vram_start;
166 man->flags = TTM_MEMTYPE_FLAG_FIXED |
167 TTM_MEMTYPE_FLAG_MAPPABLE;
168 man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC;
169 man->default_caching = TTM_PL_FLAG_WC;
170 break;
171 default:
172 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
173 return -EINVAL;
174 }
175 return 0;
176}
177
178static void radeon_evict_flags(struct ttm_buffer_object *bo,
179 struct ttm_placement *placement)
180{
181 static struct ttm_place placements = {
182 .fpfn = 0,
183 .lpfn = 0,
184 .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
185 };
186
187 struct radeon_bo *rbo;
188
189 if (!radeon_ttm_bo_is_radeon_bo(bo)) {
190 placement->placement = &placements;
191 placement->busy_placement = &placements;
192 placement->num_placement = 1;
193 placement->num_busy_placement = 1;
194 return;
195 }
196 rbo = container_of(bo, struct radeon_bo, tbo);
197 switch (bo->mem.mem_type) {
198 case TTM_PL_VRAM:
199 if (rbo->rdev->ring[radeon_copy_ring_index(rbo->rdev)].ready == false)
200 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU);
201 else if (rbo->rdev->mc.visible_vram_size < rbo->rdev->mc.real_vram_size &&
202 bo->mem.start < (rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT)) {
203 unsigned fpfn = rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
204 int i;
205
206 /* Try evicting to the CPU inaccessible part of VRAM
207 * first, but only set GTT as busy placement, so this
208 * BO will be evicted to GTT rather than causing other
209 * BOs to be evicted from VRAM
210 */
211 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM |
212 RADEON_GEM_DOMAIN_GTT);
213 rbo->placement.num_busy_placement = 0;
214 for (i = 0; i < rbo->placement.num_placement; i++) {
215 if (rbo->placements[i].flags & TTM_PL_FLAG_VRAM) {
216 if (rbo->placements[i].fpfn < fpfn)
217 rbo->placements[i].fpfn = fpfn;
218 } else {
219 rbo->placement.busy_placement =
220 &rbo->placements[i];
221 rbo->placement.num_busy_placement = 1;
222 }
223 }
224 } else
225 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT);
226 break;
227 case TTM_PL_TT:
228 default:
229 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU);
230 }
231 *placement = rbo->placement;
232}
233
234static int radeon_verify_access(struct ttm_buffer_object *bo, struct file *filp)
235{
236 struct radeon_bo *rbo = container_of(bo, struct radeon_bo, tbo);
237
238 if (radeon_ttm_tt_has_userptr(bo->ttm))
239 return -EPERM;
240 return drm_vma_node_verify_access(&rbo->gem_base.vma_node,
241 filp->private_data);
242}
243
244static void radeon_move_null(struct ttm_buffer_object *bo,
245 struct ttm_mem_reg *new_mem)
246{
247 struct ttm_mem_reg *old_mem = &bo->mem;
248
249 BUG_ON(old_mem->mm_node != NULL);
250 *old_mem = *new_mem;
251 new_mem->mm_node = NULL;
252}
253
254static int radeon_move_blit(struct ttm_buffer_object *bo,
255 bool evict, bool no_wait_gpu,
256 struct ttm_mem_reg *new_mem,
257 struct ttm_mem_reg *old_mem)
258{
259 struct radeon_device *rdev;
260 uint64_t old_start, new_start;
261 struct radeon_fence *fence;
262 unsigned num_pages;
263 int r, ridx;
264
265 rdev = radeon_get_rdev(bo->bdev);
266 ridx = radeon_copy_ring_index(rdev);
267 old_start = (u64)old_mem->start << PAGE_SHIFT;
268 new_start = (u64)new_mem->start << PAGE_SHIFT;
269
270 switch (old_mem->mem_type) {
271 case TTM_PL_VRAM:
272 old_start += rdev->mc.vram_start;
273 break;
274 case TTM_PL_TT:
275 old_start += rdev->mc.gtt_start;
276 break;
277 default:
278 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
279 return -EINVAL;
280 }
281 switch (new_mem->mem_type) {
282 case TTM_PL_VRAM:
283 new_start += rdev->mc.vram_start;
284 break;
285 case TTM_PL_TT:
286 new_start += rdev->mc.gtt_start;
287 break;
288 default:
289 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
290 return -EINVAL;
291 }
292 if (!rdev->ring[ridx].ready) {
293 DRM_ERROR("Trying to move memory with ring turned off.\n");
294 return -EINVAL;
295 }
296
297 BUILD_BUG_ON((PAGE_SIZE % RADEON_GPU_PAGE_SIZE) != 0);
298
299 num_pages = new_mem->num_pages * (PAGE_SIZE / RADEON_GPU_PAGE_SIZE);
300 fence = radeon_copy(rdev, old_start, new_start, num_pages, bo->resv);
301 if (IS_ERR(fence))
302 return PTR_ERR(fence);
303
304 r = ttm_bo_move_accel_cleanup(bo, &fence->base, evict, new_mem);
305 radeon_fence_unref(&fence);
306 return r;
307}
308
309static int radeon_move_vram_ram(struct ttm_buffer_object *bo,
310 bool evict, bool interruptible,
311 bool no_wait_gpu,
312 struct ttm_mem_reg *new_mem)
313{
314 struct radeon_device *rdev;
315 struct ttm_mem_reg *old_mem = &bo->mem;
316 struct ttm_mem_reg tmp_mem;
317 struct ttm_place placements;
318 struct ttm_placement placement;
319 int r;
320
321 rdev = radeon_get_rdev(bo->bdev);
322 tmp_mem = *new_mem;
323 tmp_mem.mm_node = NULL;
324 placement.num_placement = 1;
325 placement.placement = &placements;
326 placement.num_busy_placement = 1;
327 placement.busy_placement = &placements;
328 placements.fpfn = 0;
329 placements.lpfn = 0;
330 placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
331 r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
332 interruptible, no_wait_gpu);
333 if (unlikely(r)) {
334 return r;
335 }
336
337 r = ttm_tt_set_placement_caching(bo->ttm, tmp_mem.placement);
338 if (unlikely(r)) {
339 goto out_cleanup;
340 }
341
342 r = ttm_tt_bind(bo->ttm, &tmp_mem);
343 if (unlikely(r)) {
344 goto out_cleanup;
345 }
346 r = radeon_move_blit(bo, true, no_wait_gpu, &tmp_mem, old_mem);
347 if (unlikely(r)) {
348 goto out_cleanup;
349 }
350 r = ttm_bo_move_ttm(bo, interruptible, no_wait_gpu, new_mem);
351out_cleanup:
352 ttm_bo_mem_put(bo, &tmp_mem);
353 return r;
354}
355
356static int radeon_move_ram_vram(struct ttm_buffer_object *bo,
357 bool evict, bool interruptible,
358 bool no_wait_gpu,
359 struct ttm_mem_reg *new_mem)
360{
361 struct radeon_device *rdev;
362 struct ttm_mem_reg *old_mem = &bo->mem;
363 struct ttm_mem_reg tmp_mem;
364 struct ttm_placement placement;
365 struct ttm_place placements;
366 int r;
367
368 rdev = radeon_get_rdev(bo->bdev);
369 tmp_mem = *new_mem;
370 tmp_mem.mm_node = NULL;
371 placement.num_placement = 1;
372 placement.placement = &placements;
373 placement.num_busy_placement = 1;
374 placement.busy_placement = &placements;
375 placements.fpfn = 0;
376 placements.lpfn = 0;
377 placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
378 r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
379 interruptible, no_wait_gpu);
380 if (unlikely(r)) {
381 return r;
382 }
383 r = ttm_bo_move_ttm(bo, interruptible, no_wait_gpu, &tmp_mem);
384 if (unlikely(r)) {
385 goto out_cleanup;
386 }
387 r = radeon_move_blit(bo, true, no_wait_gpu, new_mem, old_mem);
388 if (unlikely(r)) {
389 goto out_cleanup;
390 }
391out_cleanup:
392 ttm_bo_mem_put(bo, &tmp_mem);
393 return r;
394}
395
396static int radeon_bo_move(struct ttm_buffer_object *bo,
397 bool evict, bool interruptible,
398 bool no_wait_gpu,
399 struct ttm_mem_reg *new_mem)
400{
401 struct radeon_device *rdev;
402 struct radeon_bo *rbo;
403 struct ttm_mem_reg *old_mem = &bo->mem;
404 int r;
405
406 r = ttm_bo_wait(bo, interruptible, no_wait_gpu);
407 if (r)
408 return r;
409
410 /* Can't move a pinned BO */
411 rbo = container_of(bo, struct radeon_bo, tbo);
412 if (WARN_ON_ONCE(rbo->pin_count > 0))
413 return -EINVAL;
414
415 rdev = radeon_get_rdev(bo->bdev);
416 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
417 radeon_move_null(bo, new_mem);
418 return 0;
419 }
420 if ((old_mem->mem_type == TTM_PL_TT &&
421 new_mem->mem_type == TTM_PL_SYSTEM) ||
422 (old_mem->mem_type == TTM_PL_SYSTEM &&
423 new_mem->mem_type == TTM_PL_TT)) {
424 /* bind is enough */
425 radeon_move_null(bo, new_mem);
426 return 0;
427 }
428 if (!rdev->ring[radeon_copy_ring_index(rdev)].ready ||
429 rdev->asic->copy.copy == NULL) {
430 /* use memcpy */
431 goto memcpy;
432 }
433
434 if (old_mem->mem_type == TTM_PL_VRAM &&
435 new_mem->mem_type == TTM_PL_SYSTEM) {
436 r = radeon_move_vram_ram(bo, evict, interruptible,
437 no_wait_gpu, new_mem);
438 } else if (old_mem->mem_type == TTM_PL_SYSTEM &&
439 new_mem->mem_type == TTM_PL_VRAM) {
440 r = radeon_move_ram_vram(bo, evict, interruptible,
441 no_wait_gpu, new_mem);
442 } else {
443 r = radeon_move_blit(bo, evict, no_wait_gpu, new_mem, old_mem);
444 }
445
446 if (r) {
447memcpy:
448 r = ttm_bo_move_memcpy(bo, interruptible, no_wait_gpu, new_mem);
449 if (r) {
450 return r;
451 }
452 }
453
454 /* update statistics */
455 atomic64_add((u64)bo->num_pages << PAGE_SHIFT, &rdev->num_bytes_moved);
456 return 0;
457}
458
459static int radeon_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
460{
461 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
462 struct radeon_device *rdev = radeon_get_rdev(bdev);
463
464 mem->bus.addr = NULL;
465 mem->bus.offset = 0;
466 mem->bus.size = mem->num_pages << PAGE_SHIFT;
467 mem->bus.base = 0;
468 mem->bus.is_iomem = false;
469 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
470 return -EINVAL;
471 switch (mem->mem_type) {
472 case TTM_PL_SYSTEM:
473 /* system memory */
474 return 0;
475 case TTM_PL_TT:
476#if IS_ENABLED(CONFIG_AGP)
477 if (rdev->flags & RADEON_IS_AGP) {
478 /* RADEON_IS_AGP is set only if AGP is active */
479 mem->bus.offset = mem->start << PAGE_SHIFT;
480 mem->bus.base = rdev->mc.agp_base;
481 mem->bus.is_iomem = !rdev->ddev->agp->cant_use_aperture;
482 }
483#endif
484 break;
485 case TTM_PL_VRAM:
486 mem->bus.offset = mem->start << PAGE_SHIFT;
487 /* check if it's visible */
488 if ((mem->bus.offset + mem->bus.size) > rdev->mc.visible_vram_size)
489 return -EINVAL;
490 mem->bus.base = rdev->mc.aper_base;
491 mem->bus.is_iomem = true;
492#ifdef __alpha__
493 /*
494 * Alpha: use bus.addr to hold the ioremap() return,
495 * so we can modify bus.base below.
496 */
497 if (mem->placement & TTM_PL_FLAG_WC)
498 mem->bus.addr =
499 ioremap_wc(mem->bus.base + mem->bus.offset,
500 mem->bus.size);
501 else
502 mem->bus.addr =
503 ioremap_nocache(mem->bus.base + mem->bus.offset,
504 mem->bus.size);
505
506 /*
507 * Alpha: Use just the bus offset plus
508 * the hose/domain memory base for bus.base.
509 * It then can be used to build PTEs for VRAM
510 * access, as done in ttm_bo_vm_fault().
511 */
512 mem->bus.base = (mem->bus.base & 0x0ffffffffUL) +
513 rdev->ddev->hose->dense_mem_base;
514#endif
515 break;
516 default:
517 return -EINVAL;
518 }
519 return 0;
520}
521
522static void radeon_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
523{
524}
525
526/*
527 * TTM backend functions.
528 */
529struct radeon_ttm_tt {
530 struct ttm_dma_tt ttm;
531 struct radeon_device *rdev;
532 u64 offset;
533
534 uint64_t userptr;
535 struct mm_struct *usermm;
536 uint32_t userflags;
537};
538
539/* prepare the sg table with the user pages */
540static int radeon_ttm_tt_pin_userptr(struct ttm_tt *ttm)
541{
542 struct radeon_device *rdev = radeon_get_rdev(ttm->bdev);
543 struct radeon_ttm_tt *gtt = (void *)ttm;
544 unsigned pinned = 0, nents;
545 int r;
546
547 int write = !(gtt->userflags & RADEON_GEM_USERPTR_READONLY);
548 enum dma_data_direction direction = write ?
549 DMA_BIDIRECTIONAL : DMA_TO_DEVICE;
550
551 if (current->mm != gtt->usermm)
552 return -EPERM;
553
554 if (gtt->userflags & RADEON_GEM_USERPTR_ANONONLY) {
555 /* check that we only pin down anonymous memory
556 to prevent problems with writeback */
557 unsigned long end = gtt->userptr + ttm->num_pages * PAGE_SIZE;
558 struct vm_area_struct *vma;
559 vma = find_vma(gtt->usermm, gtt->userptr);
560 if (!vma || vma->vm_file || vma->vm_end < end)
561 return -EPERM;
562 }
563
564 do {
565 unsigned num_pages = ttm->num_pages - pinned;
566 uint64_t userptr = gtt->userptr + pinned * PAGE_SIZE;
567 struct page **pages = ttm->pages + pinned;
568
569 r = get_user_pages(userptr, num_pages, write ? FOLL_WRITE : 0,
570 pages, NULL);
571 if (r < 0)
572 goto release_pages;
573
574 pinned += r;
575
576 } while (pinned < ttm->num_pages);
577
578 r = sg_alloc_table_from_pages(ttm->sg, ttm->pages, ttm->num_pages, 0,
579 ttm->num_pages << PAGE_SHIFT,
580 GFP_KERNEL);
581 if (r)
582 goto release_sg;
583
584 r = -ENOMEM;
585 nents = dma_map_sg(rdev->dev, ttm->sg->sgl, ttm->sg->nents, direction);
586 if (nents != ttm->sg->nents)
587 goto release_sg;
588
589 drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
590 gtt->ttm.dma_address, ttm->num_pages);
591
592 return 0;
593
594release_sg:
595 kfree(ttm->sg);
596
597release_pages:
598 release_pages(ttm->pages, pinned, 0);
599 return r;
600}
601
602static void radeon_ttm_tt_unpin_userptr(struct ttm_tt *ttm)
603{
604 struct radeon_device *rdev = radeon_get_rdev(ttm->bdev);
605 struct radeon_ttm_tt *gtt = (void *)ttm;
606 struct sg_page_iter sg_iter;
607
608 int write = !(gtt->userflags & RADEON_GEM_USERPTR_READONLY);
609 enum dma_data_direction direction = write ?
610 DMA_BIDIRECTIONAL : DMA_TO_DEVICE;
611
612 /* double check that we don't free the table twice */
613 if (!ttm->sg->sgl)
614 return;
615
616 /* free the sg table and pages again */
617 dma_unmap_sg(rdev->dev, ttm->sg->sgl, ttm->sg->nents, direction);
618
619 for_each_sg_page(ttm->sg->sgl, &sg_iter, ttm->sg->nents, 0) {
620 struct page *page = sg_page_iter_page(&sg_iter);
621 if (!(gtt->userflags & RADEON_GEM_USERPTR_READONLY))
622 set_page_dirty(page);
623
624 mark_page_accessed(page);
625 put_page(page);
626 }
627
628 sg_free_table(ttm->sg);
629}
630
631static int radeon_ttm_backend_bind(struct ttm_tt *ttm,
632 struct ttm_mem_reg *bo_mem)
633{
634 struct radeon_ttm_tt *gtt = (void*)ttm;
635 uint32_t flags = RADEON_GART_PAGE_VALID | RADEON_GART_PAGE_READ |
636 RADEON_GART_PAGE_WRITE;
637 int r;
638
639 if (gtt->userptr) {
640 radeon_ttm_tt_pin_userptr(ttm);
641 flags &= ~RADEON_GART_PAGE_WRITE;
642 }
643
644 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
645 if (!ttm->num_pages) {
646 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
647 ttm->num_pages, bo_mem, ttm);
648 }
649 if (ttm->caching_state == tt_cached)
650 flags |= RADEON_GART_PAGE_SNOOP;
651 r = radeon_gart_bind(gtt->rdev, gtt->offset, ttm->num_pages,
652 ttm->pages, gtt->ttm.dma_address, flags);
653 if (r) {
654 DRM_ERROR("failed to bind %lu pages at 0x%08X\n",
655 ttm->num_pages, (unsigned)gtt->offset);
656 return r;
657 }
658 return 0;
659}
660
661static int radeon_ttm_backend_unbind(struct ttm_tt *ttm)
662{
663 struct radeon_ttm_tt *gtt = (void *)ttm;
664
665 radeon_gart_unbind(gtt->rdev, gtt->offset, ttm->num_pages);
666
667 if (gtt->userptr)
668 radeon_ttm_tt_unpin_userptr(ttm);
669
670 return 0;
671}
672
673static void radeon_ttm_backend_destroy(struct ttm_tt *ttm)
674{
675 struct radeon_ttm_tt *gtt = (void *)ttm;
676
677 ttm_dma_tt_fini(>t->ttm);
678 kfree(gtt);
679}
680
681static struct ttm_backend_func radeon_backend_func = {
682 .bind = &radeon_ttm_backend_bind,
683 .unbind = &radeon_ttm_backend_unbind,
684 .destroy = &radeon_ttm_backend_destroy,
685};
686
687static struct ttm_tt *radeon_ttm_tt_create(struct ttm_bo_device *bdev,
688 unsigned long size, uint32_t page_flags,
689 struct page *dummy_read_page)
690{
691 struct radeon_device *rdev;
692 struct radeon_ttm_tt *gtt;
693
694 rdev = radeon_get_rdev(bdev);
695#if IS_ENABLED(CONFIG_AGP)
696 if (rdev->flags & RADEON_IS_AGP) {
697 return ttm_agp_tt_create(bdev, rdev->ddev->agp->bridge,
698 size, page_flags, dummy_read_page);
699 }
700#endif
701
702 gtt = kzalloc(sizeof(struct radeon_ttm_tt), GFP_KERNEL);
703 if (gtt == NULL) {
704 return NULL;
705 }
706 gtt->ttm.ttm.func = &radeon_backend_func;
707 gtt->rdev = rdev;
708 if (ttm_dma_tt_init(>t->ttm, bdev, size, page_flags, dummy_read_page)) {
709 kfree(gtt);
710 return NULL;
711 }
712 return >t->ttm.ttm;
713}
714
715static struct radeon_ttm_tt *radeon_ttm_tt_to_gtt(struct ttm_tt *ttm)
716{
717 if (!ttm || ttm->func != &radeon_backend_func)
718 return NULL;
719 return (struct radeon_ttm_tt *)ttm;
720}
721
722static int radeon_ttm_tt_populate(struct ttm_tt *ttm)
723{
724 struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(ttm);
725 struct radeon_device *rdev;
726 unsigned i;
727 int r;
728 bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
729
730 if (ttm->state != tt_unpopulated)
731 return 0;
732
733 if (gtt && gtt->userptr) {
734 ttm->sg = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
735 if (!ttm->sg)
736 return -ENOMEM;
737
738 ttm->page_flags |= TTM_PAGE_FLAG_SG;
739 ttm->state = tt_unbound;
740 return 0;
741 }
742
743 if (slave && ttm->sg) {
744 drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
745 gtt->ttm.dma_address, ttm->num_pages);
746 ttm->state = tt_unbound;
747 return 0;
748 }
749
750 rdev = radeon_get_rdev(ttm->bdev);
751#if IS_ENABLED(CONFIG_AGP)
752 if (rdev->flags & RADEON_IS_AGP) {
753 return ttm_agp_tt_populate(ttm);
754 }
755#endif
756
757#ifdef CONFIG_SWIOTLB
758 if (swiotlb_nr_tbl()) {
759 return ttm_dma_populate(>t->ttm, rdev->dev);
760 }
761#endif
762
763 r = ttm_pool_populate(ttm);
764 if (r) {
765 return r;
766 }
767
768 for (i = 0; i < ttm->num_pages; i++) {
769 gtt->ttm.dma_address[i] = pci_map_page(rdev->pdev, ttm->pages[i],
770 0, PAGE_SIZE,
771 PCI_DMA_BIDIRECTIONAL);
772 if (pci_dma_mapping_error(rdev->pdev, gtt->ttm.dma_address[i])) {
773 while (i--) {
774 pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i],
775 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
776 gtt->ttm.dma_address[i] = 0;
777 }
778 ttm_pool_unpopulate(ttm);
779 return -EFAULT;
780 }
781 }
782 return 0;
783}
784
785static void radeon_ttm_tt_unpopulate(struct ttm_tt *ttm)
786{
787 struct radeon_device *rdev;
788 struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(ttm);
789 unsigned i;
790 bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
791
792 if (gtt && gtt->userptr) {
793 kfree(ttm->sg);
794 ttm->page_flags &= ~TTM_PAGE_FLAG_SG;
795 return;
796 }
797
798 if (slave)
799 return;
800
801 rdev = radeon_get_rdev(ttm->bdev);
802#if IS_ENABLED(CONFIG_AGP)
803 if (rdev->flags & RADEON_IS_AGP) {
804 ttm_agp_tt_unpopulate(ttm);
805 return;
806 }
807#endif
808
809#ifdef CONFIG_SWIOTLB
810 if (swiotlb_nr_tbl()) {
811 ttm_dma_unpopulate(>t->ttm, rdev->dev);
812 return;
813 }
814#endif
815
816 for (i = 0; i < ttm->num_pages; i++) {
817 if (gtt->ttm.dma_address[i]) {
818 pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i],
819 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
820 }
821 }
822
823 ttm_pool_unpopulate(ttm);
824}
825
826int radeon_ttm_tt_set_userptr(struct ttm_tt *ttm, uint64_t addr,
827 uint32_t flags)
828{
829 struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(ttm);
830
831 if (gtt == NULL)
832 return -EINVAL;
833
834 gtt->userptr = addr;
835 gtt->usermm = current->mm;
836 gtt->userflags = flags;
837 return 0;
838}
839
840bool radeon_ttm_tt_has_userptr(struct ttm_tt *ttm)
841{
842 struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(ttm);
843
844 if (gtt == NULL)
845 return false;
846
847 return !!gtt->userptr;
848}
849
850bool radeon_ttm_tt_is_readonly(struct ttm_tt *ttm)
851{
852 struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(ttm);
853
854 if (gtt == NULL)
855 return false;
856
857 return !!(gtt->userflags & RADEON_GEM_USERPTR_READONLY);
858}
859
860static struct ttm_bo_driver radeon_bo_driver = {
861 .ttm_tt_create = &radeon_ttm_tt_create,
862 .ttm_tt_populate = &radeon_ttm_tt_populate,
863 .ttm_tt_unpopulate = &radeon_ttm_tt_unpopulate,
864 .invalidate_caches = &radeon_invalidate_caches,
865 .init_mem_type = &radeon_init_mem_type,
866 .eviction_valuable = ttm_bo_eviction_valuable,
867 .evict_flags = &radeon_evict_flags,
868 .move = &radeon_bo_move,
869 .verify_access = &radeon_verify_access,
870 .move_notify = &radeon_bo_move_notify,
871 .fault_reserve_notify = &radeon_bo_fault_reserve_notify,
872 .io_mem_reserve = &radeon_ttm_io_mem_reserve,
873 .io_mem_free = &radeon_ttm_io_mem_free,
874 .lru_tail = &ttm_bo_default_lru_tail,
875 .swap_lru_tail = &ttm_bo_default_swap_lru_tail,
876};
877
878int radeon_ttm_init(struct radeon_device *rdev)
879{
880 int r;
881
882 r = radeon_ttm_global_init(rdev);
883 if (r) {
884 return r;
885 }
886 /* No others user of address space so set it to 0 */
887 r = ttm_bo_device_init(&rdev->mman.bdev,
888 rdev->mman.bo_global_ref.ref.object,
889 &radeon_bo_driver,
890 rdev->ddev->anon_inode->i_mapping,
891 DRM_FILE_PAGE_OFFSET,
892 rdev->need_dma32);
893 if (r) {
894 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
895 return r;
896 }
897 rdev->mman.initialized = true;
898 r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_VRAM,
899 rdev->mc.real_vram_size >> PAGE_SHIFT);
900 if (r) {
901 DRM_ERROR("Failed initializing VRAM heap.\n");
902 return r;
903 }
904 /* Change the size here instead of the init above so only lpfn is affected */
905 radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size);
906
907 r = radeon_bo_create(rdev, 256 * 1024, PAGE_SIZE, true,
908 RADEON_GEM_DOMAIN_VRAM, 0, NULL,
909 NULL, &rdev->stollen_vga_memory);
910 if (r) {
911 return r;
912 }
913 r = radeon_bo_reserve(rdev->stollen_vga_memory, false);
914 if (r)
915 return r;
916 r = radeon_bo_pin(rdev->stollen_vga_memory, RADEON_GEM_DOMAIN_VRAM, NULL);
917 radeon_bo_unreserve(rdev->stollen_vga_memory);
918 if (r) {
919 radeon_bo_unref(&rdev->stollen_vga_memory);
920 return r;
921 }
922 DRM_INFO("radeon: %uM of VRAM memory ready\n",
923 (unsigned) (rdev->mc.real_vram_size / (1024 * 1024)));
924 r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_TT,
925 rdev->mc.gtt_size >> PAGE_SHIFT);
926 if (r) {
927 DRM_ERROR("Failed initializing GTT heap.\n");
928 return r;
929 }
930 DRM_INFO("radeon: %uM of GTT memory ready.\n",
931 (unsigned)(rdev->mc.gtt_size / (1024 * 1024)));
932
933 r = radeon_ttm_debugfs_init(rdev);
934 if (r) {
935 DRM_ERROR("Failed to init debugfs\n");
936 return r;
937 }
938 return 0;
939}
940
941void radeon_ttm_fini(struct radeon_device *rdev)
942{
943 int r;
944
945 if (!rdev->mman.initialized)
946 return;
947 radeon_ttm_debugfs_fini(rdev);
948 if (rdev->stollen_vga_memory) {
949 r = radeon_bo_reserve(rdev->stollen_vga_memory, false);
950 if (r == 0) {
951 radeon_bo_unpin(rdev->stollen_vga_memory);
952 radeon_bo_unreserve(rdev->stollen_vga_memory);
953 }
954 radeon_bo_unref(&rdev->stollen_vga_memory);
955 }
956 ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_VRAM);
957 ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_TT);
958 ttm_bo_device_release(&rdev->mman.bdev);
959 radeon_gart_fini(rdev);
960 radeon_ttm_global_fini(rdev);
961 rdev->mman.initialized = false;
962 DRM_INFO("radeon: ttm finalized\n");
963}
964
965/* this should only be called at bootup or when userspace
966 * isn't running */
967void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size)
968{
969 struct ttm_mem_type_manager *man;
970
971 if (!rdev->mman.initialized)
972 return;
973
974 man = &rdev->mman.bdev.man[TTM_PL_VRAM];
975 /* this just adjusts TTM size idea, which sets lpfn to the correct value */
976 man->size = size >> PAGE_SHIFT;
977}
978
979static struct vm_operations_struct radeon_ttm_vm_ops;
980static const struct vm_operations_struct *ttm_vm_ops = NULL;
981
982static int radeon_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
983{
984 struct ttm_buffer_object *bo;
985 struct radeon_device *rdev;
986 int r;
987
988 bo = (struct ttm_buffer_object *)vma->vm_private_data;
989 if (bo == NULL) {
990 return VM_FAULT_NOPAGE;
991 }
992 rdev = radeon_get_rdev(bo->bdev);
993 down_read(&rdev->pm.mclk_lock);
994 r = ttm_vm_ops->fault(vma, vmf);
995 up_read(&rdev->pm.mclk_lock);
996 return r;
997}
998
999int radeon_mmap(struct file *filp, struct vm_area_struct *vma)
1000{
1001 struct drm_file *file_priv;
1002 struct radeon_device *rdev;
1003 int r;
1004
1005 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
1006 return -EINVAL;
1007 }
1008
1009 file_priv = filp->private_data;
1010 rdev = file_priv->minor->dev->dev_private;
1011 if (rdev == NULL) {
1012 return -EINVAL;
1013 }
1014 r = ttm_bo_mmap(filp, vma, &rdev->mman.bdev);
1015 if (unlikely(r != 0)) {
1016 return r;
1017 }
1018 if (unlikely(ttm_vm_ops == NULL)) {
1019 ttm_vm_ops = vma->vm_ops;
1020 radeon_ttm_vm_ops = *ttm_vm_ops;
1021 radeon_ttm_vm_ops.fault = &radeon_ttm_fault;
1022 }
1023 vma->vm_ops = &radeon_ttm_vm_ops;
1024 return 0;
1025}
1026
1027#if defined(CONFIG_DEBUG_FS)
1028
1029static int radeon_mm_dump_table(struct seq_file *m, void *data)
1030{
1031 struct drm_info_node *node = (struct drm_info_node *)m->private;
1032 unsigned ttm_pl = *(int *)node->info_ent->data;
1033 struct drm_device *dev = node->minor->dev;
1034 struct radeon_device *rdev = dev->dev_private;
1035 struct drm_mm *mm = (struct drm_mm *)rdev->mman.bdev.man[ttm_pl].priv;
1036 int ret;
1037 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
1038
1039 spin_lock(&glob->lru_lock);
1040 ret = drm_mm_dump_table(m, mm);
1041 spin_unlock(&glob->lru_lock);
1042 return ret;
1043}
1044
1045static int ttm_pl_vram = TTM_PL_VRAM;
1046static int ttm_pl_tt = TTM_PL_TT;
1047
1048static struct drm_info_list radeon_ttm_debugfs_list[] = {
1049 {"radeon_vram_mm", radeon_mm_dump_table, 0, &ttm_pl_vram},
1050 {"radeon_gtt_mm", radeon_mm_dump_table, 0, &ttm_pl_tt},
1051 {"ttm_page_pool", ttm_page_alloc_debugfs, 0, NULL},
1052#ifdef CONFIG_SWIOTLB
1053 {"ttm_dma_page_pool", ttm_dma_page_alloc_debugfs, 0, NULL}
1054#endif
1055};
1056
1057static int radeon_ttm_vram_open(struct inode *inode, struct file *filep)
1058{
1059 struct radeon_device *rdev = inode->i_private;
1060 i_size_write(inode, rdev->mc.mc_vram_size);
1061 filep->private_data = inode->i_private;
1062 return 0;
1063}
1064
1065static ssize_t radeon_ttm_vram_read(struct file *f, char __user *buf,
1066 size_t size, loff_t *pos)
1067{
1068 struct radeon_device *rdev = f->private_data;
1069 ssize_t result = 0;
1070 int r;
1071
1072 if (size & 0x3 || *pos & 0x3)
1073 return -EINVAL;
1074
1075 while (size) {
1076 unsigned long flags;
1077 uint32_t value;
1078
1079 if (*pos >= rdev->mc.mc_vram_size)
1080 return result;
1081
1082 spin_lock_irqsave(&rdev->mmio_idx_lock, flags);
1083 WREG32(RADEON_MM_INDEX, ((uint32_t)*pos) | 0x80000000);
1084 if (rdev->family >= CHIP_CEDAR)
1085 WREG32(EVERGREEN_MM_INDEX_HI, *pos >> 31);
1086 value = RREG32(RADEON_MM_DATA);
1087 spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags);
1088
1089 r = put_user(value, (uint32_t *)buf);
1090 if (r)
1091 return r;
1092
1093 result += 4;
1094 buf += 4;
1095 *pos += 4;
1096 size -= 4;
1097 }
1098
1099 return result;
1100}
1101
1102static const struct file_operations radeon_ttm_vram_fops = {
1103 .owner = THIS_MODULE,
1104 .open = radeon_ttm_vram_open,
1105 .read = radeon_ttm_vram_read,
1106 .llseek = default_llseek
1107};
1108
1109static int radeon_ttm_gtt_open(struct inode *inode, struct file *filep)
1110{
1111 struct radeon_device *rdev = inode->i_private;
1112 i_size_write(inode, rdev->mc.gtt_size);
1113 filep->private_data = inode->i_private;
1114 return 0;
1115}
1116
1117static ssize_t radeon_ttm_gtt_read(struct file *f, char __user *buf,
1118 size_t size, loff_t *pos)
1119{
1120 struct radeon_device *rdev = f->private_data;
1121 ssize_t result = 0;
1122 int r;
1123
1124 while (size) {
1125 loff_t p = *pos / PAGE_SIZE;
1126 unsigned off = *pos & ~PAGE_MASK;
1127 size_t cur_size = min_t(size_t, size, PAGE_SIZE - off);
1128 struct page *page;
1129 void *ptr;
1130
1131 if (p >= rdev->gart.num_cpu_pages)
1132 return result;
1133
1134 page = rdev->gart.pages[p];
1135 if (page) {
1136 ptr = kmap(page);
1137 ptr += off;
1138
1139 r = copy_to_user(buf, ptr, cur_size);
1140 kunmap(rdev->gart.pages[p]);
1141 } else
1142 r = clear_user(buf, cur_size);
1143
1144 if (r)
1145 return -EFAULT;
1146
1147 result += cur_size;
1148 buf += cur_size;
1149 *pos += cur_size;
1150 size -= cur_size;
1151 }
1152
1153 return result;
1154}
1155
1156static const struct file_operations radeon_ttm_gtt_fops = {
1157 .owner = THIS_MODULE,
1158 .open = radeon_ttm_gtt_open,
1159 .read = radeon_ttm_gtt_read,
1160 .llseek = default_llseek
1161};
1162
1163#endif
1164
1165static int radeon_ttm_debugfs_init(struct radeon_device *rdev)
1166{
1167#if defined(CONFIG_DEBUG_FS)
1168 unsigned count;
1169
1170 struct drm_minor *minor = rdev->ddev->primary;
1171 struct dentry *ent, *root = minor->debugfs_root;
1172
1173 ent = debugfs_create_file("radeon_vram", S_IFREG | S_IRUGO, root,
1174 rdev, &radeon_ttm_vram_fops);
1175 if (IS_ERR(ent))
1176 return PTR_ERR(ent);
1177 rdev->mman.vram = ent;
1178
1179 ent = debugfs_create_file("radeon_gtt", S_IFREG | S_IRUGO, root,
1180 rdev, &radeon_ttm_gtt_fops);
1181 if (IS_ERR(ent))
1182 return PTR_ERR(ent);
1183 rdev->mman.gtt = ent;
1184
1185 count = ARRAY_SIZE(radeon_ttm_debugfs_list);
1186
1187#ifdef CONFIG_SWIOTLB
1188 if (!swiotlb_nr_tbl())
1189 --count;
1190#endif
1191
1192 return radeon_debugfs_add_files(rdev, radeon_ttm_debugfs_list, count);
1193#else
1194
1195 return 0;
1196#endif
1197}
1198
1199static void radeon_ttm_debugfs_fini(struct radeon_device *rdev)
1200{
1201#if defined(CONFIG_DEBUG_FS)
1202
1203 debugfs_remove(rdev->mman.vram);
1204 rdev->mman.vram = NULL;
1205
1206 debugfs_remove(rdev->mman.gtt);
1207 rdev->mman.gtt = NULL;
1208#endif
1209}