1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2020-2023 Intel Corporation
4 */
5
6 #include <linux/dma-buf.h>
7 #include <linux/highmem.h>
8 #include <linux/module.h>
9 #include <linux/set_memory.h>
10 #include <linux/xarray.h>
11
12 #include <drm/drm_cache.h>
13 #include <drm/drm_debugfs.h>
14 #include <drm/drm_file.h>
15 #include <drm/drm_utils.h>
16
17 #include "ivpu_drv.h"
18 #include "ivpu_gem.h"
19 #include "ivpu_hw.h"
20 #include "ivpu_mmu.h"
21 #include "ivpu_mmu_context.h"
22
23 MODULE_IMPORT_NS(DMA_BUF);
24
25 static const struct drm_gem_object_funcs ivpu_gem_funcs;
26
27 static struct lock_class_key prime_bo_lock_class_key;
28
prime_alloc_pages_locked(struct ivpu_bo * bo)29 static int __must_check prime_alloc_pages_locked(struct ivpu_bo *bo)
30 {
31 /* Pages are managed by the underlying dma-buf */
32 return 0;
33 }
34
prime_free_pages_locked(struct ivpu_bo * bo)35 static void prime_free_pages_locked(struct ivpu_bo *bo)
36 {
37 /* Pages are managed by the underlying dma-buf */
38 }
39
prime_map_pages_locked(struct ivpu_bo * bo)40 static int prime_map_pages_locked(struct ivpu_bo *bo)
41 {
42 struct ivpu_device *vdev = ivpu_bo_to_vdev(bo);
43 struct sg_table *sgt;
44
45 sgt = dma_buf_map_attachment_unlocked(bo->base.import_attach, DMA_BIDIRECTIONAL);
46 if (IS_ERR(sgt)) {
47 ivpu_err(vdev, "Failed to map attachment: %ld\n", PTR_ERR(sgt));
48 return PTR_ERR(sgt);
49 }
50
51 bo->sgt = sgt;
52 return 0;
53 }
54
prime_unmap_pages_locked(struct ivpu_bo * bo)55 static void prime_unmap_pages_locked(struct ivpu_bo *bo)
56 {
57 dma_buf_unmap_attachment_unlocked(bo->base.import_attach, bo->sgt, DMA_BIDIRECTIONAL);
58 bo->sgt = NULL;
59 }
60
61 static const struct ivpu_bo_ops prime_ops = {
62 .type = IVPU_BO_TYPE_PRIME,
63 .name = "prime",
64 .alloc_pages = prime_alloc_pages_locked,
65 .free_pages = prime_free_pages_locked,
66 .map_pages = prime_map_pages_locked,
67 .unmap_pages = prime_unmap_pages_locked,
68 };
69
shmem_alloc_pages_locked(struct ivpu_bo * bo)70 static int __must_check shmem_alloc_pages_locked(struct ivpu_bo *bo)
71 {
72 int npages = bo->base.size >> PAGE_SHIFT;
73 struct page **pages;
74
75 pages = drm_gem_get_pages(&bo->base);
76 if (IS_ERR(pages))
77 return PTR_ERR(pages);
78
79 if (bo->flags & DRM_IVPU_BO_WC)
80 set_pages_array_wc(pages, npages);
81 else if (bo->flags & DRM_IVPU_BO_UNCACHED)
82 set_pages_array_uc(pages, npages);
83
84 bo->pages = pages;
85 return 0;
86 }
87
shmem_free_pages_locked(struct ivpu_bo * bo)88 static void shmem_free_pages_locked(struct ivpu_bo *bo)
89 {
90 if (ivpu_bo_cache_mode(bo) != DRM_IVPU_BO_CACHED)
91 set_pages_array_wb(bo->pages, bo->base.size >> PAGE_SHIFT);
92
93 drm_gem_put_pages(&bo->base, bo->pages, true, false);
94 bo->pages = NULL;
95 }
96
ivpu_bo_map_pages_locked(struct ivpu_bo * bo)97 static int ivpu_bo_map_pages_locked(struct ivpu_bo *bo)
98 {
99 int npages = bo->base.size >> PAGE_SHIFT;
100 struct ivpu_device *vdev = ivpu_bo_to_vdev(bo);
101 struct sg_table *sgt;
102 int ret;
103
104 sgt = drm_prime_pages_to_sg(&vdev->drm, bo->pages, npages);
105 if (IS_ERR(sgt)) {
106 ivpu_err(vdev, "Failed to allocate sgtable\n");
107 return PTR_ERR(sgt);
108 }
109
110 ret = dma_map_sgtable(vdev->drm.dev, sgt, DMA_BIDIRECTIONAL, 0);
111 if (ret) {
112 ivpu_err(vdev, "Failed to map BO in IOMMU: %d\n", ret);
113 goto err_free_sgt;
114 }
115
116 bo->sgt = sgt;
117 return 0;
118
119 err_free_sgt:
120 kfree(sgt);
121 return ret;
122 }
123
ivpu_bo_unmap_pages_locked(struct ivpu_bo * bo)124 static void ivpu_bo_unmap_pages_locked(struct ivpu_bo *bo)
125 {
126 struct ivpu_device *vdev = ivpu_bo_to_vdev(bo);
127
128 dma_unmap_sgtable(vdev->drm.dev, bo->sgt, DMA_BIDIRECTIONAL, 0);
129 sg_free_table(bo->sgt);
130 kfree(bo->sgt);
131 bo->sgt = NULL;
132 }
133
134 static const struct ivpu_bo_ops shmem_ops = {
135 .type = IVPU_BO_TYPE_SHMEM,
136 .name = "shmem",
137 .alloc_pages = shmem_alloc_pages_locked,
138 .free_pages = shmem_free_pages_locked,
139 .map_pages = ivpu_bo_map_pages_locked,
140 .unmap_pages = ivpu_bo_unmap_pages_locked,
141 };
142
internal_alloc_pages_locked(struct ivpu_bo * bo)143 static int __must_check internal_alloc_pages_locked(struct ivpu_bo *bo)
144 {
145 unsigned int i, npages = bo->base.size >> PAGE_SHIFT;
146 struct page **pages;
147 int ret;
148
149 pages = kvmalloc_array(npages, sizeof(*bo->pages), GFP_KERNEL);
150 if (!pages)
151 return -ENOMEM;
152
153 for (i = 0; i < npages; i++) {
154 pages[i] = alloc_page(GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO);
155 if (!pages[i]) {
156 ret = -ENOMEM;
157 goto err_free_pages;
158 }
159 cond_resched();
160 }
161
162 bo->pages = pages;
163 return 0;
164
165 err_free_pages:
166 while (i--)
167 put_page(pages[i]);
168 kvfree(pages);
169 return ret;
170 }
171
internal_free_pages_locked(struct ivpu_bo * bo)172 static void internal_free_pages_locked(struct ivpu_bo *bo)
173 {
174 unsigned int i, npages = bo->base.size >> PAGE_SHIFT;
175
176 for (i = 0; i < npages; i++)
177 put_page(bo->pages[i]);
178
179 kvfree(bo->pages);
180 bo->pages = NULL;
181 }
182
183 static const struct ivpu_bo_ops internal_ops = {
184 .type = IVPU_BO_TYPE_INTERNAL,
185 .name = "internal",
186 .alloc_pages = internal_alloc_pages_locked,
187 .free_pages = internal_free_pages_locked,
188 .map_pages = ivpu_bo_map_pages_locked,
189 .unmap_pages = ivpu_bo_unmap_pages_locked,
190 };
191
ivpu_bo_alloc_and_map_pages_locked(struct ivpu_bo * bo)192 static int __must_check ivpu_bo_alloc_and_map_pages_locked(struct ivpu_bo *bo)
193 {
194 struct ivpu_device *vdev = ivpu_bo_to_vdev(bo);
195 int ret;
196
197 lockdep_assert_held(&bo->lock);
198 drm_WARN_ON(&vdev->drm, bo->sgt);
199
200 ret = bo->ops->alloc_pages(bo);
201 if (ret) {
202 ivpu_err(vdev, "Failed to allocate pages for BO: %d", ret);
203 return ret;
204 }
205
206 ret = bo->ops->map_pages(bo);
207 if (ret) {
208 ivpu_err(vdev, "Failed to map pages for BO: %d", ret);
209 goto err_free_pages;
210 }
211 return ret;
212
213 err_free_pages:
214 bo->ops->free_pages(bo);
215 return ret;
216 }
217
ivpu_bo_unmap_and_free_pages(struct ivpu_bo * bo)218 static void ivpu_bo_unmap_and_free_pages(struct ivpu_bo *bo)
219 {
220 mutex_lock(&bo->lock);
221
222 WARN_ON(!bo->sgt);
223 bo->ops->unmap_pages(bo);
224 WARN_ON(bo->sgt);
225 bo->ops->free_pages(bo);
226 WARN_ON(bo->pages);
227
228 mutex_unlock(&bo->lock);
229 }
230
231 /*
232 * ivpu_bo_pin() - pin the backing physical pages and map them to VPU.
233 *
234 * This function pins physical memory pages, then maps the physical pages
235 * to IOMMU address space and finally updates the VPU MMU page tables
236 * to allow the VPU to translate VPU address to IOMMU address.
237 */
ivpu_bo_pin(struct ivpu_bo * bo)238 int __must_check ivpu_bo_pin(struct ivpu_bo *bo)
239 {
240 struct ivpu_device *vdev = ivpu_bo_to_vdev(bo);
241 int ret = 0;
242
243 mutex_lock(&bo->lock);
244
245 if (!bo->vpu_addr) {
246 ivpu_err(vdev, "vpu_addr not set for BO ctx_id: %d handle: %d\n",
247 bo->ctx->id, bo->handle);
248 ret = -EINVAL;
249 goto unlock;
250 }
251
252 if (!bo->sgt) {
253 ret = ivpu_bo_alloc_and_map_pages_locked(bo);
254 if (ret)
255 goto unlock;
256 }
257
258 if (!bo->mmu_mapped) {
259 ret = ivpu_mmu_context_map_sgt(vdev, bo->ctx, bo->vpu_addr, bo->sgt,
260 ivpu_bo_is_snooped(bo));
261 if (ret) {
262 ivpu_err(vdev, "Failed to map BO in MMU: %d\n", ret);
263 goto unlock;
264 }
265 bo->mmu_mapped = true;
266 }
267
268 unlock:
269 mutex_unlock(&bo->lock);
270
271 return ret;
272 }
273
274 static int
ivpu_bo_alloc_vpu_addr(struct ivpu_bo * bo,struct ivpu_mmu_context * ctx,const struct ivpu_addr_range * range)275 ivpu_bo_alloc_vpu_addr(struct ivpu_bo *bo, struct ivpu_mmu_context *ctx,
276 const struct ivpu_addr_range *range)
277 {
278 struct ivpu_device *vdev = ivpu_bo_to_vdev(bo);
279 int ret;
280
281 if (!range) {
282 if (bo->flags & DRM_IVPU_BO_HIGH_MEM)
283 range = &vdev->hw->ranges.user_high;
284 else
285 range = &vdev->hw->ranges.user_low;
286 }
287
288 mutex_lock(&ctx->lock);
289 ret = ivpu_mmu_context_insert_node_locked(ctx, range, bo->base.size, &bo->mm_node);
290 if (!ret) {
291 bo->ctx = ctx;
292 bo->vpu_addr = bo->mm_node.start;
293 list_add_tail(&bo->ctx_node, &ctx->bo_list);
294 }
295 mutex_unlock(&ctx->lock);
296
297 return ret;
298 }
299
ivpu_bo_free_vpu_addr(struct ivpu_bo * bo)300 static void ivpu_bo_free_vpu_addr(struct ivpu_bo *bo)
301 {
302 struct ivpu_device *vdev = ivpu_bo_to_vdev(bo);
303 struct ivpu_mmu_context *ctx = bo->ctx;
304
305 ivpu_dbg(vdev, BO, "remove from ctx: ctx %d vpu_addr 0x%llx allocated %d mmu_mapped %d\n",
306 ctx->id, bo->vpu_addr, (bool)bo->sgt, bo->mmu_mapped);
307
308 mutex_lock(&bo->lock);
309
310 if (bo->mmu_mapped) {
311 drm_WARN_ON(&vdev->drm, !bo->sgt);
312 ivpu_mmu_context_unmap_sgt(vdev, ctx, bo->vpu_addr, bo->sgt);
313 bo->mmu_mapped = false;
314 }
315
316 mutex_lock(&ctx->lock);
317 list_del(&bo->ctx_node);
318 bo->vpu_addr = 0;
319 bo->ctx = NULL;
320 ivpu_mmu_context_remove_node_locked(ctx, &bo->mm_node);
321 mutex_unlock(&ctx->lock);
322
323 mutex_unlock(&bo->lock);
324 }
325
ivpu_bo_remove_all_bos_from_context(struct ivpu_mmu_context * ctx)326 void ivpu_bo_remove_all_bos_from_context(struct ivpu_mmu_context *ctx)
327 {
328 struct ivpu_bo *bo, *tmp;
329
330 list_for_each_entry_safe(bo, tmp, &ctx->bo_list, ctx_node)
331 ivpu_bo_free_vpu_addr(bo);
332 }
333
334 static struct ivpu_bo *
ivpu_bo_alloc(struct ivpu_device * vdev,struct ivpu_mmu_context * mmu_context,u64 size,u32 flags,const struct ivpu_bo_ops * ops,const struct ivpu_addr_range * range,u64 user_ptr)335 ivpu_bo_alloc(struct ivpu_device *vdev, struct ivpu_mmu_context *mmu_context,
336 u64 size, u32 flags, const struct ivpu_bo_ops *ops,
337 const struct ivpu_addr_range *range, u64 user_ptr)
338 {
339 struct ivpu_bo *bo;
340 int ret = 0;
341
342 if (drm_WARN_ON(&vdev->drm, size == 0 || !PAGE_ALIGNED(size)))
343 return ERR_PTR(-EINVAL);
344
345 switch (flags & DRM_IVPU_BO_CACHE_MASK) {
346 case DRM_IVPU_BO_CACHED:
347 case DRM_IVPU_BO_UNCACHED:
348 case DRM_IVPU_BO_WC:
349 break;
350 default:
351 return ERR_PTR(-EINVAL);
352 }
353
354 bo = kzalloc(sizeof(*bo), GFP_KERNEL);
355 if (!bo)
356 return ERR_PTR(-ENOMEM);
357
358 mutex_init(&bo->lock);
359 bo->base.funcs = &ivpu_gem_funcs;
360 bo->flags = flags;
361 bo->ops = ops;
362 bo->user_ptr = user_ptr;
363
364 if (ops->type == IVPU_BO_TYPE_SHMEM)
365 ret = drm_gem_object_init(&vdev->drm, &bo->base, size);
366 else
367 drm_gem_private_object_init(&vdev->drm, &bo->base, size);
368
369 if (ret) {
370 ivpu_err(vdev, "Failed to initialize drm object\n");
371 goto err_free;
372 }
373
374 if (flags & DRM_IVPU_BO_MAPPABLE) {
375 ret = drm_gem_create_mmap_offset(&bo->base);
376 if (ret) {
377 ivpu_err(vdev, "Failed to allocate mmap offset\n");
378 goto err_release;
379 }
380 }
381
382 if (mmu_context) {
383 ret = ivpu_bo_alloc_vpu_addr(bo, mmu_context, range);
384 if (ret) {
385 ivpu_err(vdev, "Failed to add BO to context: %d\n", ret);
386 goto err_release;
387 }
388 }
389
390 return bo;
391
392 err_release:
393 drm_gem_object_release(&bo->base);
394 err_free:
395 kfree(bo);
396 return ERR_PTR(ret);
397 }
398
ivpu_bo_free(struct drm_gem_object * obj)399 static void ivpu_bo_free(struct drm_gem_object *obj)
400 {
401 struct ivpu_bo *bo = to_ivpu_bo(obj);
402 struct ivpu_device *vdev = ivpu_bo_to_vdev(bo);
403
404 if (bo->ctx)
405 ivpu_dbg(vdev, BO, "free: ctx %d vpu_addr 0x%llx allocated %d mmu_mapped %d\n",
406 bo->ctx->id, bo->vpu_addr, (bool)bo->sgt, bo->mmu_mapped);
407 else
408 ivpu_dbg(vdev, BO, "free: ctx (released) allocated %d mmu_mapped %d\n",
409 (bool)bo->sgt, bo->mmu_mapped);
410
411 drm_WARN_ON(&vdev->drm, !dma_resv_test_signaled(obj->resv, DMA_RESV_USAGE_READ));
412
413 vunmap(bo->kvaddr);
414
415 if (bo->ctx)
416 ivpu_bo_free_vpu_addr(bo);
417
418 if (bo->sgt)
419 ivpu_bo_unmap_and_free_pages(bo);
420
421 if (bo->base.import_attach)
422 drm_prime_gem_destroy(&bo->base, bo->sgt);
423
424 drm_gem_object_release(&bo->base);
425
426 mutex_destroy(&bo->lock);
427 kfree(bo);
428 }
429
ivpu_bo_mmap(struct drm_gem_object * obj,struct vm_area_struct * vma)430 static int ivpu_bo_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
431 {
432 struct ivpu_bo *bo = to_ivpu_bo(obj);
433 struct ivpu_device *vdev = ivpu_bo_to_vdev(bo);
434
435 ivpu_dbg(vdev, BO, "mmap: ctx %u handle %u vpu_addr 0x%llx size %zu type %s",
436 bo->ctx->id, bo->handle, bo->vpu_addr, bo->base.size, bo->ops->name);
437
438 if (obj->import_attach) {
439 /* Drop the reference drm_gem_mmap_obj() acquired.*/
440 drm_gem_object_put(obj);
441 vma->vm_private_data = NULL;
442 return dma_buf_mmap(obj->dma_buf, vma, 0);
443 }
444
445 vm_flags_set(vma, VM_PFNMAP | VM_DONTEXPAND);
446 vma->vm_page_prot = ivpu_bo_pgprot(bo, vm_get_page_prot(vma->vm_flags));
447
448 return 0;
449 }
450
ivpu_bo_get_sg_table(struct drm_gem_object * obj)451 static struct sg_table *ivpu_bo_get_sg_table(struct drm_gem_object *obj)
452 {
453 struct ivpu_bo *bo = to_ivpu_bo(obj);
454 loff_t npages = obj->size >> PAGE_SHIFT;
455 int ret = 0;
456
457 mutex_lock(&bo->lock);
458
459 if (!bo->sgt)
460 ret = ivpu_bo_alloc_and_map_pages_locked(bo);
461
462 mutex_unlock(&bo->lock);
463
464 if (ret)
465 return ERR_PTR(ret);
466
467 return drm_prime_pages_to_sg(obj->dev, bo->pages, npages);
468 }
469
ivpu_vm_fault(struct vm_fault * vmf)470 static vm_fault_t ivpu_vm_fault(struct vm_fault *vmf)
471 {
472 struct vm_area_struct *vma = vmf->vma;
473 struct drm_gem_object *obj = vma->vm_private_data;
474 struct ivpu_bo *bo = to_ivpu_bo(obj);
475 loff_t npages = obj->size >> PAGE_SHIFT;
476 pgoff_t page_offset;
477 struct page *page;
478 vm_fault_t ret;
479 int err;
480
481 mutex_lock(&bo->lock);
482
483 if (!bo->sgt) {
484 err = ivpu_bo_alloc_and_map_pages_locked(bo);
485 if (err) {
486 ret = vmf_error(err);
487 goto unlock;
488 }
489 }
490
491 /* We don't use vmf->pgoff since that has the fake offset */
492 page_offset = (vmf->address - vma->vm_start) >> PAGE_SHIFT;
493 if (page_offset >= npages) {
494 ret = VM_FAULT_SIGBUS;
495 } else {
496 page = bo->pages[page_offset];
497 ret = vmf_insert_pfn(vma, vmf->address, page_to_pfn(page));
498 }
499
500 unlock:
501 mutex_unlock(&bo->lock);
502
503 return ret;
504 }
505
506 static const struct vm_operations_struct ivpu_vm_ops = {
507 .fault = ivpu_vm_fault,
508 .open = drm_gem_vm_open,
509 .close = drm_gem_vm_close,
510 };
511
512 static const struct drm_gem_object_funcs ivpu_gem_funcs = {
513 .free = ivpu_bo_free,
514 .mmap = ivpu_bo_mmap,
515 .vm_ops = &ivpu_vm_ops,
516 .get_sg_table = ivpu_bo_get_sg_table,
517 };
518
519 int
ivpu_bo_create_ioctl(struct drm_device * dev,void * data,struct drm_file * file)520 ivpu_bo_create_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
521 {
522 struct ivpu_file_priv *file_priv = file->driver_priv;
523 struct ivpu_device *vdev = file_priv->vdev;
524 struct drm_ivpu_bo_create *args = data;
525 u64 size = PAGE_ALIGN(args->size);
526 struct ivpu_bo *bo;
527 int ret;
528
529 if (args->flags & ~DRM_IVPU_BO_FLAGS)
530 return -EINVAL;
531
532 if (size == 0)
533 return -EINVAL;
534
535 bo = ivpu_bo_alloc(vdev, &file_priv->ctx, size, args->flags, &shmem_ops, NULL, 0);
536 if (IS_ERR(bo)) {
537 ivpu_err(vdev, "Failed to create BO: %pe (ctx %u size %llu flags 0x%x)",
538 bo, file_priv->ctx.id, args->size, args->flags);
539 return PTR_ERR(bo);
540 }
541
542 ret = drm_gem_handle_create(file, &bo->base, &bo->handle);
543 if (!ret) {
544 args->vpu_addr = bo->vpu_addr;
545 args->handle = bo->handle;
546 }
547
548 drm_gem_object_put(&bo->base);
549
550 ivpu_dbg(vdev, BO, "alloc shmem: ctx %u vpu_addr 0x%llx size %zu flags 0x%x\n",
551 file_priv->ctx.id, bo->vpu_addr, bo->base.size, bo->flags);
552
553 return ret;
554 }
555
556 struct ivpu_bo *
ivpu_bo_alloc_internal(struct ivpu_device * vdev,u64 vpu_addr,u64 size,u32 flags)557 ivpu_bo_alloc_internal(struct ivpu_device *vdev, u64 vpu_addr, u64 size, u32 flags)
558 {
559 const struct ivpu_addr_range *range;
560 struct ivpu_addr_range fixed_range;
561 struct ivpu_bo *bo;
562 pgprot_t prot;
563 int ret;
564
565 drm_WARN_ON(&vdev->drm, !PAGE_ALIGNED(vpu_addr));
566 drm_WARN_ON(&vdev->drm, !PAGE_ALIGNED(size));
567
568 if (vpu_addr) {
569 fixed_range.start = vpu_addr;
570 fixed_range.end = vpu_addr + size;
571 range = &fixed_range;
572 } else {
573 range = &vdev->hw->ranges.global_low;
574 }
575
576 bo = ivpu_bo_alloc(vdev, &vdev->gctx, size, flags, &internal_ops, range, 0);
577 if (IS_ERR(bo)) {
578 ivpu_err(vdev, "Failed to create BO: %pe (vpu_addr 0x%llx size %llu flags 0x%x)",
579 bo, vpu_addr, size, flags);
580 return NULL;
581 }
582
583 ret = ivpu_bo_pin(bo);
584 if (ret)
585 goto err_put;
586
587 if (ivpu_bo_cache_mode(bo) != DRM_IVPU_BO_CACHED)
588 drm_clflush_pages(bo->pages, bo->base.size >> PAGE_SHIFT);
589
590 prot = ivpu_bo_pgprot(bo, PAGE_KERNEL);
591 bo->kvaddr = vmap(bo->pages, bo->base.size >> PAGE_SHIFT, VM_MAP, prot);
592 if (!bo->kvaddr) {
593 ivpu_err(vdev, "Failed to map BO into kernel virtual memory\n");
594 goto err_put;
595 }
596
597 ivpu_dbg(vdev, BO, "alloc internal: ctx 0 vpu_addr 0x%llx size %zu flags 0x%x\n",
598 bo->vpu_addr, bo->base.size, flags);
599
600 return bo;
601
602 err_put:
603 drm_gem_object_put(&bo->base);
604 return NULL;
605 }
606
ivpu_bo_free_internal(struct ivpu_bo * bo)607 void ivpu_bo_free_internal(struct ivpu_bo *bo)
608 {
609 drm_gem_object_put(&bo->base);
610 }
611
ivpu_gem_prime_import(struct drm_device * dev,struct dma_buf * buf)612 struct drm_gem_object *ivpu_gem_prime_import(struct drm_device *dev, struct dma_buf *buf)
613 {
614 struct ivpu_device *vdev = to_ivpu_device(dev);
615 struct dma_buf_attachment *attach;
616 struct ivpu_bo *bo;
617
618 attach = dma_buf_attach(buf, dev->dev);
619 if (IS_ERR(attach))
620 return ERR_CAST(attach);
621
622 get_dma_buf(buf);
623
624 bo = ivpu_bo_alloc(vdev, NULL, buf->size, DRM_IVPU_BO_MAPPABLE, &prime_ops, NULL, 0);
625 if (IS_ERR(bo)) {
626 ivpu_err(vdev, "Failed to import BO: %pe (size %lu)", bo, buf->size);
627 goto err_detach;
628 }
629
630 lockdep_set_class(&bo->lock, &prime_bo_lock_class_key);
631
632 bo->base.import_attach = attach;
633
634 return &bo->base;
635
636 err_detach:
637 dma_buf_detach(buf, attach);
638 dma_buf_put(buf);
639 return ERR_CAST(bo);
640 }
641
ivpu_bo_info_ioctl(struct drm_device * dev,void * data,struct drm_file * file)642 int ivpu_bo_info_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
643 {
644 struct ivpu_file_priv *file_priv = file->driver_priv;
645 struct ivpu_device *vdev = to_ivpu_device(dev);
646 struct drm_ivpu_bo_info *args = data;
647 struct drm_gem_object *obj;
648 struct ivpu_bo *bo;
649 int ret = 0;
650
651 obj = drm_gem_object_lookup(file, args->handle);
652 if (!obj)
653 return -ENOENT;
654
655 bo = to_ivpu_bo(obj);
656
657 mutex_lock(&bo->lock);
658
659 if (!bo->ctx) {
660 ret = ivpu_bo_alloc_vpu_addr(bo, &file_priv->ctx, NULL);
661 if (ret) {
662 ivpu_err(vdev, "Failed to allocate vpu_addr: %d\n", ret);
663 goto unlock;
664 }
665 }
666
667 args->flags = bo->flags;
668 args->mmap_offset = drm_vma_node_offset_addr(&obj->vma_node);
669 args->vpu_addr = bo->vpu_addr;
670 args->size = obj->size;
671 unlock:
672 mutex_unlock(&bo->lock);
673 drm_gem_object_put(obj);
674 return ret;
675 }
676
ivpu_bo_wait_ioctl(struct drm_device * dev,void * data,struct drm_file * file)677 int ivpu_bo_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
678 {
679 struct drm_ivpu_bo_wait *args = data;
680 struct drm_gem_object *obj;
681 unsigned long timeout;
682 long ret;
683
684 timeout = drm_timeout_abs_to_jiffies(args->timeout_ns);
685
686 obj = drm_gem_object_lookup(file, args->handle);
687 if (!obj)
688 return -EINVAL;
689
690 ret = dma_resv_wait_timeout(obj->resv, DMA_RESV_USAGE_READ, true, timeout);
691 if (ret == 0) {
692 ret = -ETIMEDOUT;
693 } else if (ret > 0) {
694 ret = 0;
695 args->job_status = to_ivpu_bo(obj)->job_status;
696 }
697
698 drm_gem_object_put(obj);
699
700 return ret;
701 }
702
ivpu_bo_print_info(struct ivpu_bo * bo,struct drm_printer * p)703 static void ivpu_bo_print_info(struct ivpu_bo *bo, struct drm_printer *p)
704 {
705 unsigned long dma_refcount = 0;
706
707 if (bo->base.dma_buf && bo->base.dma_buf->file)
708 dma_refcount = atomic_long_read(&bo->base.dma_buf->file->f_count);
709
710 drm_printf(p, "%5u %6d %16llx %10lu %10u %12lu %14s\n",
711 bo->ctx->id, bo->handle, bo->vpu_addr, bo->base.size,
712 kref_read(&bo->base.refcount), dma_refcount, bo->ops->name);
713 }
714
ivpu_bo_list(struct drm_device * dev,struct drm_printer * p)715 void ivpu_bo_list(struct drm_device *dev, struct drm_printer *p)
716 {
717 struct ivpu_device *vdev = to_ivpu_device(dev);
718 struct ivpu_file_priv *file_priv;
719 unsigned long ctx_id;
720 struct ivpu_bo *bo;
721
722 drm_printf(p, "%5s %6s %16s %10s %10s %12s %14s\n",
723 "ctx", "handle", "vpu_addr", "size", "refcount", "dma_refcount", "type");
724
725 mutex_lock(&vdev->gctx.lock);
726 list_for_each_entry(bo, &vdev->gctx.bo_list, ctx_node)
727 ivpu_bo_print_info(bo, p);
728 mutex_unlock(&vdev->gctx.lock);
729
730 xa_for_each(&vdev->context_xa, ctx_id, file_priv) {
731 file_priv = ivpu_file_priv_get_by_ctx_id(vdev, ctx_id);
732 if (!file_priv)
733 continue;
734
735 mutex_lock(&file_priv->ctx.lock);
736 list_for_each_entry(bo, &file_priv->ctx.bo_list, ctx_node)
737 ivpu_bo_print_info(bo, p);
738 mutex_unlock(&file_priv->ctx.lock);
739
740 ivpu_file_priv_put(&file_priv);
741 }
742 }
743
ivpu_bo_list_print(struct drm_device * dev)744 void ivpu_bo_list_print(struct drm_device *dev)
745 {
746 struct drm_printer p = drm_info_printer(dev->dev);
747
748 ivpu_bo_list(dev, &p);
749 }
750