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1/*
2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Dave Airlie
25 * Alex Deucher
26 * Jerome Glisse
27 */
28#include <linux/ktime.h>
29#include <linux/pagemap.h>
30#include <drm/drmP.h>
31#include <drm/amdgpu_drm.h>
32#include "amdgpu.h"
33
34void amdgpu_gem_object_free(struct drm_gem_object *gobj)
35{
36 struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj);
37
38 if (robj) {
39 if (robj->gem_base.import_attach)
40 drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg);
41 amdgpu_mn_unregister(robj);
42 amdgpu_bo_unref(&robj);
43 }
44}
45
46int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
47 int alignment, u32 initial_domain,
48 u64 flags, bool kernel,
49 struct drm_gem_object **obj)
50{
51 struct amdgpu_bo *robj;
52 unsigned long max_size;
53 int r;
54
55 *obj = NULL;
56 /* At least align on page size */
57 if (alignment < PAGE_SIZE) {
58 alignment = PAGE_SIZE;
59 }
60
61 if (!(initial_domain & (AMDGPU_GEM_DOMAIN_GDS | AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA))) {
62 /* Maximum bo size is the unpinned gtt size since we use the gtt to
63 * handle vram to system pool migrations.
64 */
65 max_size = adev->mc.gtt_size - adev->gart_pin_size;
66 if (size > max_size) {
67 DRM_DEBUG("Allocation size %ldMb bigger than %ldMb limit\n",
68 size >> 20, max_size >> 20);
69 return -ENOMEM;
70 }
71 }
72retry:
73 r = amdgpu_bo_create(adev, size, alignment, kernel, initial_domain,
74 flags, NULL, NULL, &robj);
75 if (r) {
76 if (r != -ERESTARTSYS) {
77 if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
78 initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
79 goto retry;
80 }
81 DRM_ERROR("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
82 size, initial_domain, alignment, r);
83 }
84 return r;
85 }
86 *obj = &robj->gem_base;
87
88 return 0;
89}
90
91void amdgpu_gem_force_release(struct amdgpu_device *adev)
92{
93 struct drm_device *ddev = adev->ddev;
94 struct drm_file *file;
95
96 mutex_lock(&ddev->struct_mutex);
97
98 list_for_each_entry(file, &ddev->filelist, lhead) {
99 struct drm_gem_object *gobj;
100 int handle;
101
102 WARN_ONCE(1, "Still active user space clients!\n");
103 spin_lock(&file->table_lock);
104 idr_for_each_entry(&file->object_idr, gobj, handle) {
105 WARN_ONCE(1, "And also active allocations!\n");
106 drm_gem_object_unreference(gobj);
107 }
108 idr_destroy(&file->object_idr);
109 spin_unlock(&file->table_lock);
110 }
111
112 mutex_unlock(&ddev->struct_mutex);
113}
114
115/*
116 * Call from drm_gem_handle_create which appear in both new and open ioctl
117 * case.
118 */
119int amdgpu_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
120{
121 struct amdgpu_bo *rbo = gem_to_amdgpu_bo(obj);
122 struct amdgpu_device *adev = rbo->adev;
123 struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
124 struct amdgpu_vm *vm = &fpriv->vm;
125 struct amdgpu_bo_va *bo_va;
126 int r;
127 r = amdgpu_bo_reserve(rbo, false);
128 if (r)
129 return r;
130
131 bo_va = amdgpu_vm_bo_find(vm, rbo);
132 if (!bo_va) {
133 bo_va = amdgpu_vm_bo_add(adev, vm, rbo);
134 } else {
135 ++bo_va->ref_count;
136 }
137 amdgpu_bo_unreserve(rbo);
138 return 0;
139}
140
141void amdgpu_gem_object_close(struct drm_gem_object *obj,
142 struct drm_file *file_priv)
143{
144 struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
145 struct amdgpu_device *adev = bo->adev;
146 struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
147 struct amdgpu_vm *vm = &fpriv->vm;
148
149 struct amdgpu_bo_list_entry vm_pd;
150 struct list_head list, duplicates;
151 struct ttm_validate_buffer tv;
152 struct ww_acquire_ctx ticket;
153 struct amdgpu_bo_va *bo_va;
154 int r;
155
156 INIT_LIST_HEAD(&list);
157 INIT_LIST_HEAD(&duplicates);
158
159 tv.bo = &bo->tbo;
160 tv.shared = true;
161 list_add(&tv.head, &list);
162
163 amdgpu_vm_get_pd_bo(vm, &list, &vm_pd);
164
165 r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates);
166 if (r) {
167 dev_err(adev->dev, "leaking bo va because "
168 "we fail to reserve bo (%d)\n", r);
169 return;
170 }
171 bo_va = amdgpu_vm_bo_find(vm, bo);
172 if (bo_va) {
173 if (--bo_va->ref_count == 0) {
174 amdgpu_vm_bo_rmv(adev, bo_va);
175 }
176 }
177 ttm_eu_backoff_reservation(&ticket, &list);
178}
179
180static int amdgpu_gem_handle_lockup(struct amdgpu_device *adev, int r)
181{
182 if (r == -EDEADLK) {
183 r = amdgpu_gpu_reset(adev);
184 if (!r)
185 r = -EAGAIN;
186 }
187 return r;
188}
189
190/*
191 * GEM ioctls.
192 */
193int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
194 struct drm_file *filp)
195{
196 struct amdgpu_device *adev = dev->dev_private;
197 union drm_amdgpu_gem_create *args = data;
198 uint64_t size = args->in.bo_size;
199 struct drm_gem_object *gobj;
200 uint32_t handle;
201 bool kernel = false;
202 int r;
203
204 /* create a gem object to contain this object in */
205 if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
206 AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
207 kernel = true;
208 if (args->in.domains == AMDGPU_GEM_DOMAIN_GDS)
209 size = size << AMDGPU_GDS_SHIFT;
210 else if (args->in.domains == AMDGPU_GEM_DOMAIN_GWS)
211 size = size << AMDGPU_GWS_SHIFT;
212 else if (args->in.domains == AMDGPU_GEM_DOMAIN_OA)
213 size = size << AMDGPU_OA_SHIFT;
214 else {
215 r = -EINVAL;
216 goto error_unlock;
217 }
218 }
219 size = roundup(size, PAGE_SIZE);
220
221 r = amdgpu_gem_object_create(adev, size, args->in.alignment,
222 (u32)(0xffffffff & args->in.domains),
223 args->in.domain_flags,
224 kernel, &gobj);
225 if (r)
226 goto error_unlock;
227
228 r = drm_gem_handle_create(filp, gobj, &handle);
229 /* drop reference from allocate - handle holds it now */
230 drm_gem_object_unreference_unlocked(gobj);
231 if (r)
232 goto error_unlock;
233
234 memset(args, 0, sizeof(*args));
235 args->out.handle = handle;
236 return 0;
237
238error_unlock:
239 r = amdgpu_gem_handle_lockup(adev, r);
240 return r;
241}
242
243int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
244 struct drm_file *filp)
245{
246 struct amdgpu_device *adev = dev->dev_private;
247 struct drm_amdgpu_gem_userptr *args = data;
248 struct drm_gem_object *gobj;
249 struct amdgpu_bo *bo;
250 uint32_t handle;
251 int r;
252
253 if (offset_in_page(args->addr | args->size))
254 return -EINVAL;
255
256 /* reject unknown flag values */
257 if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
258 AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
259 AMDGPU_GEM_USERPTR_REGISTER))
260 return -EINVAL;
261
262 if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
263 !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
264
265 /* if we want to write to it we must install a MMU notifier */
266 return -EACCES;
267 }
268
269 /* create a gem object to contain this object in */
270 r = amdgpu_gem_object_create(adev, args->size, 0,
271 AMDGPU_GEM_DOMAIN_CPU, 0,
272 0, &gobj);
273 if (r)
274 goto handle_lockup;
275
276 bo = gem_to_amdgpu_bo(gobj);
277 bo->prefered_domains = AMDGPU_GEM_DOMAIN_GTT;
278 bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
279 r = amdgpu_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags);
280 if (r)
281 goto release_object;
282
283 if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) {
284 r = amdgpu_mn_register(bo, args->addr);
285 if (r)
286 goto release_object;
287 }
288
289 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
290 down_read(¤t->mm->mmap_sem);
291
292 r = amdgpu_ttm_tt_get_user_pages(bo->tbo.ttm,
293 bo->tbo.ttm->pages);
294 if (r)
295 goto unlock_mmap_sem;
296
297 r = amdgpu_bo_reserve(bo, true);
298 if (r)
299 goto free_pages;
300
301 amdgpu_ttm_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
302 r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
303 amdgpu_bo_unreserve(bo);
304 if (r)
305 goto free_pages;
306
307 up_read(¤t->mm->mmap_sem);
308 }
309
310 r = drm_gem_handle_create(filp, gobj, &handle);
311 /* drop reference from allocate - handle holds it now */
312 drm_gem_object_unreference_unlocked(gobj);
313 if (r)
314 goto handle_lockup;
315
316 args->handle = handle;
317 return 0;
318
319free_pages:
320 release_pages(bo->tbo.ttm->pages, bo->tbo.ttm->num_pages, false);
321
322unlock_mmap_sem:
323 up_read(¤t->mm->mmap_sem);
324
325release_object:
326 drm_gem_object_unreference_unlocked(gobj);
327
328handle_lockup:
329 r = amdgpu_gem_handle_lockup(adev, r);
330
331 return r;
332}
333
334int amdgpu_mode_dumb_mmap(struct drm_file *filp,
335 struct drm_device *dev,
336 uint32_t handle, uint64_t *offset_p)
337{
338 struct drm_gem_object *gobj;
339 struct amdgpu_bo *robj;
340
341 gobj = drm_gem_object_lookup(dev, filp, handle);
342 if (gobj == NULL) {
343 return -ENOENT;
344 }
345 robj = gem_to_amdgpu_bo(gobj);
346 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) ||
347 (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) {
348 drm_gem_object_unreference_unlocked(gobj);
349 return -EPERM;
350 }
351 *offset_p = amdgpu_bo_mmap_offset(robj);
352 drm_gem_object_unreference_unlocked(gobj);
353 return 0;
354}
355
356int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data,
357 struct drm_file *filp)
358{
359 union drm_amdgpu_gem_mmap *args = data;
360 uint32_t handle = args->in.handle;
361 memset(args, 0, sizeof(*args));
362 return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);
363}
364
365/**
366 * amdgpu_gem_timeout - calculate jiffies timeout from absolute value
367 *
368 * @timeout_ns: timeout in ns
369 *
370 * Calculate the timeout in jiffies from an absolute timeout in ns.
371 */
372unsigned long amdgpu_gem_timeout(uint64_t timeout_ns)
373{
374 unsigned long timeout_jiffies;
375 ktime_t timeout;
376
377 /* clamp timeout if it's to large */
378 if (((int64_t)timeout_ns) < 0)
379 return MAX_SCHEDULE_TIMEOUT;
380
381 timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get());
382 if (ktime_to_ns(timeout) < 0)
383 return 0;
384
385 timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout));
386 /* clamp timeout to avoid unsigned-> signed overflow */
387 if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT )
388 return MAX_SCHEDULE_TIMEOUT - 1;
389
390 return timeout_jiffies;
391}
392
393int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
394 struct drm_file *filp)
395{
396 struct amdgpu_device *adev = dev->dev_private;
397 union drm_amdgpu_gem_wait_idle *args = data;
398 struct drm_gem_object *gobj;
399 struct amdgpu_bo *robj;
400 uint32_t handle = args->in.handle;
401 unsigned long timeout = amdgpu_gem_timeout(args->in.timeout);
402 int r = 0;
403 long ret;
404
405 gobj = drm_gem_object_lookup(dev, filp, handle);
406 if (gobj == NULL) {
407 return -ENOENT;
408 }
409 robj = gem_to_amdgpu_bo(gobj);
410 if (timeout == 0)
411 ret = reservation_object_test_signaled_rcu(robj->tbo.resv, true);
412 else
413 ret = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true, timeout);
414
415 /* ret == 0 means not signaled,
416 * ret > 0 means signaled
417 * ret < 0 means interrupted before timeout
418 */
419 if (ret >= 0) {
420 memset(args, 0, sizeof(*args));
421 args->out.status = (ret == 0);
422 } else
423 r = ret;
424
425 drm_gem_object_unreference_unlocked(gobj);
426 r = amdgpu_gem_handle_lockup(adev, r);
427 return r;
428}
429
430int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
431 struct drm_file *filp)
432{
433 struct drm_amdgpu_gem_metadata *args = data;
434 struct drm_gem_object *gobj;
435 struct amdgpu_bo *robj;
436 int r = -1;
437
438 DRM_DEBUG("%d \n", args->handle);
439 gobj = drm_gem_object_lookup(dev, filp, args->handle);
440 if (gobj == NULL)
441 return -ENOENT;
442 robj = gem_to_amdgpu_bo(gobj);
443
444 r = amdgpu_bo_reserve(robj, false);
445 if (unlikely(r != 0))
446 goto out;
447
448 if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) {
449 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info);
450 r = amdgpu_bo_get_metadata(robj, args->data.data,
451 sizeof(args->data.data),
452 &args->data.data_size_bytes,
453 &args->data.flags);
454 } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) {
455 if (args->data.data_size_bytes > sizeof(args->data.data)) {
456 r = -EINVAL;
457 goto unreserve;
458 }
459 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info);
460 if (!r)
461 r = amdgpu_bo_set_metadata(robj, args->data.data,
462 args->data.data_size_bytes,
463 args->data.flags);
464 }
465
466unreserve:
467 amdgpu_bo_unreserve(robj);
468out:
469 drm_gem_object_unreference_unlocked(gobj);
470 return r;
471}
472
473/**
474 * amdgpu_gem_va_update_vm -update the bo_va in its VM
475 *
476 * @adev: amdgpu_device pointer
477 * @bo_va: bo_va to update
478 *
479 * Update the bo_va directly after setting it's address. Errors are not
480 * vital here, so they are not reported back to userspace.
481 */
482static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
483 struct amdgpu_bo_va *bo_va, uint32_t operation)
484{
485 struct ttm_validate_buffer tv, *entry;
486 struct amdgpu_bo_list_entry vm_pd;
487 struct ww_acquire_ctx ticket;
488 struct list_head list, duplicates;
489 unsigned domain;
490 int r;
491
492 INIT_LIST_HEAD(&list);
493 INIT_LIST_HEAD(&duplicates);
494
495 tv.bo = &bo_va->bo->tbo;
496 tv.shared = true;
497 list_add(&tv.head, &list);
498
499 amdgpu_vm_get_pd_bo(bo_va->vm, &list, &vm_pd);
500
501 /* Provide duplicates to avoid -EALREADY */
502 r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
503 if (r)
504 goto error_print;
505
506 amdgpu_vm_get_pt_bos(bo_va->vm, &duplicates);
507 list_for_each_entry(entry, &list, head) {
508 domain = amdgpu_mem_type_to_domain(entry->bo->mem.mem_type);
509 /* if anything is swapped out don't swap it in here,
510 just abort and wait for the next CS */
511 if (domain == AMDGPU_GEM_DOMAIN_CPU)
512 goto error_unreserve;
513 }
514 list_for_each_entry(entry, &duplicates, head) {
515 domain = amdgpu_mem_type_to_domain(entry->bo->mem.mem_type);
516 /* if anything is swapped out don't swap it in here,
517 just abort and wait for the next CS */
518 if (domain == AMDGPU_GEM_DOMAIN_CPU)
519 goto error_unreserve;
520 }
521
522 r = amdgpu_vm_update_page_directory(adev, bo_va->vm);
523 if (r)
524 goto error_unreserve;
525
526 r = amdgpu_vm_clear_freed(adev, bo_va->vm);
527 if (r)
528 goto error_unreserve;
529
530 if (operation == AMDGPU_VA_OP_MAP)
531 r = amdgpu_vm_bo_update(adev, bo_va, &bo_va->bo->tbo.mem);
532
533error_unreserve:
534 ttm_eu_backoff_reservation(&ticket, &list);
535
536error_print:
537 if (r && r != -ERESTARTSYS)
538 DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
539}
540
541
542
543int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
544 struct drm_file *filp)
545{
546 struct drm_amdgpu_gem_va *args = data;
547 struct drm_gem_object *gobj;
548 struct amdgpu_device *adev = dev->dev_private;
549 struct amdgpu_fpriv *fpriv = filp->driver_priv;
550 struct amdgpu_bo *rbo;
551 struct amdgpu_bo_va *bo_va;
552 struct ttm_validate_buffer tv, tv_pd;
553 struct ww_acquire_ctx ticket;
554 struct list_head list, duplicates;
555 uint32_t invalid_flags, va_flags = 0;
556 int r = 0;
557
558 if (!adev->vm_manager.enabled)
559 return -ENOTTY;
560
561 if (args->va_address < AMDGPU_VA_RESERVED_SIZE) {
562 dev_err(&dev->pdev->dev,
563 "va_address 0x%lX is in reserved area 0x%X\n",
564 (unsigned long)args->va_address,
565 AMDGPU_VA_RESERVED_SIZE);
566 return -EINVAL;
567 }
568
569 invalid_flags = ~(AMDGPU_VM_DELAY_UPDATE | AMDGPU_VM_PAGE_READABLE |
570 AMDGPU_VM_PAGE_WRITEABLE | AMDGPU_VM_PAGE_EXECUTABLE);
571 if ((args->flags & invalid_flags)) {
572 dev_err(&dev->pdev->dev, "invalid flags 0x%08X vs 0x%08X\n",
573 args->flags, invalid_flags);
574 return -EINVAL;
575 }
576
577 switch (args->operation) {
578 case AMDGPU_VA_OP_MAP:
579 case AMDGPU_VA_OP_UNMAP:
580 break;
581 default:
582 dev_err(&dev->pdev->dev, "unsupported operation %d\n",
583 args->operation);
584 return -EINVAL;
585 }
586
587 gobj = drm_gem_object_lookup(dev, filp, args->handle);
588 if (gobj == NULL)
589 return -ENOENT;
590 rbo = gem_to_amdgpu_bo(gobj);
591 INIT_LIST_HEAD(&list);
592 INIT_LIST_HEAD(&duplicates);
593 tv.bo = &rbo->tbo;
594 tv.shared = true;
595 list_add(&tv.head, &list);
596
597 tv_pd.bo = &fpriv->vm.page_directory->tbo;
598 tv_pd.shared = true;
599 list_add(&tv_pd.head, &list);
600
601 r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
602 if (r) {
603 drm_gem_object_unreference_unlocked(gobj);
604 return r;
605 }
606
607 bo_va = amdgpu_vm_bo_find(&fpriv->vm, rbo);
608 if (!bo_va) {
609 ttm_eu_backoff_reservation(&ticket, &list);
610 drm_gem_object_unreference_unlocked(gobj);
611 return -ENOENT;
612 }
613
614 switch (args->operation) {
615 case AMDGPU_VA_OP_MAP:
616 if (args->flags & AMDGPU_VM_PAGE_READABLE)
617 va_flags |= AMDGPU_PTE_READABLE;
618 if (args->flags & AMDGPU_VM_PAGE_WRITEABLE)
619 va_flags |= AMDGPU_PTE_WRITEABLE;
620 if (args->flags & AMDGPU_VM_PAGE_EXECUTABLE)
621 va_flags |= AMDGPU_PTE_EXECUTABLE;
622 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
623 args->offset_in_bo, args->map_size,
624 va_flags);
625 break;
626 case AMDGPU_VA_OP_UNMAP:
627 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
628 break;
629 default:
630 break;
631 }
632 ttm_eu_backoff_reservation(&ticket, &list);
633 if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) &&
634 !amdgpu_vm_debug)
635 amdgpu_gem_va_update_vm(adev, bo_va, args->operation);
636
637 drm_gem_object_unreference_unlocked(gobj);
638 return r;
639}
640
641int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
642 struct drm_file *filp)
643{
644 struct drm_amdgpu_gem_op *args = data;
645 struct drm_gem_object *gobj;
646 struct amdgpu_bo *robj;
647 int r;
648
649 gobj = drm_gem_object_lookup(dev, filp, args->handle);
650 if (gobj == NULL) {
651 return -ENOENT;
652 }
653 robj = gem_to_amdgpu_bo(gobj);
654
655 r = amdgpu_bo_reserve(robj, false);
656 if (unlikely(r))
657 goto out;
658
659 switch (args->op) {
660 case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: {
661 struct drm_amdgpu_gem_create_in info;
662 void __user *out = (void __user *)(long)args->value;
663
664 info.bo_size = robj->gem_base.size;
665 info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT;
666 info.domains = robj->prefered_domains;
667 info.domain_flags = robj->flags;
668 amdgpu_bo_unreserve(robj);
669 if (copy_to_user(out, &info, sizeof(info)))
670 r = -EFAULT;
671 break;
672 }
673 case AMDGPU_GEM_OP_SET_PLACEMENT:
674 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) {
675 r = -EPERM;
676 amdgpu_bo_unreserve(robj);
677 break;
678 }
679 robj->prefered_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM |
680 AMDGPU_GEM_DOMAIN_GTT |
681 AMDGPU_GEM_DOMAIN_CPU);
682 robj->allowed_domains = robj->prefered_domains;
683 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
684 robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
685
686 amdgpu_bo_unreserve(robj);
687 break;
688 default:
689 amdgpu_bo_unreserve(robj);
690 r = -EINVAL;
691 }
692
693out:
694 drm_gem_object_unreference_unlocked(gobj);
695 return r;
696}
697
698int amdgpu_mode_dumb_create(struct drm_file *file_priv,
699 struct drm_device *dev,
700 struct drm_mode_create_dumb *args)
701{
702 struct amdgpu_device *adev = dev->dev_private;
703 struct drm_gem_object *gobj;
704 uint32_t handle;
705 int r;
706
707 args->pitch = amdgpu_align_pitch(adev, args->width, args->bpp, 0) * ((args->bpp + 1) / 8);
708 args->size = (u64)args->pitch * args->height;
709 args->size = ALIGN(args->size, PAGE_SIZE);
710
711 r = amdgpu_gem_object_create(adev, args->size, 0,
712 AMDGPU_GEM_DOMAIN_VRAM,
713 AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
714 ttm_bo_type_device,
715 &gobj);
716 if (r)
717 return -ENOMEM;
718
719 r = drm_gem_handle_create(file_priv, gobj, &handle);
720 /* drop reference from allocate - handle holds it now */
721 drm_gem_object_unreference_unlocked(gobj);
722 if (r) {
723 return r;
724 }
725 args->handle = handle;
726 return 0;
727}
728
729#if defined(CONFIG_DEBUG_FS)
730static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data)
731{
732 struct drm_gem_object *gobj = ptr;
733 struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj);
734 struct seq_file *m = data;
735
736 unsigned domain;
737 const char *placement;
738 unsigned pin_count;
739
740 domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
741 switch (domain) {
742 case AMDGPU_GEM_DOMAIN_VRAM:
743 placement = "VRAM";
744 break;
745 case AMDGPU_GEM_DOMAIN_GTT:
746 placement = " GTT";
747 break;
748 case AMDGPU_GEM_DOMAIN_CPU:
749 default:
750 placement = " CPU";
751 break;
752 }
753 seq_printf(m, "\t0x%08x: %12ld byte %s @ 0x%010Lx",
754 id, amdgpu_bo_size(bo), placement,
755 amdgpu_bo_gpu_offset(bo));
756
757 pin_count = ACCESS_ONCE(bo->pin_count);
758 if (pin_count)
759 seq_printf(m, " pin count %d", pin_count);
760 seq_printf(m, "\n");
761
762 return 0;
763}
764
765static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data)
766{
767 struct drm_info_node *node = (struct drm_info_node *)m->private;
768 struct drm_device *dev = node->minor->dev;
769 struct drm_file *file;
770 int r;
771
772 r = mutex_lock_interruptible(&dev->struct_mutex);
773 if (r)
774 return r;
775
776 list_for_each_entry(file, &dev->filelist, lhead) {
777 struct task_struct *task;
778
779 /*
780 * Although we have a valid reference on file->pid, that does
781 * not guarantee that the task_struct who called get_pid() is
782 * still alive (e.g. get_pid(current) => fork() => exit()).
783 * Therefore, we need to protect this ->comm access using RCU.
784 */
785 rcu_read_lock();
786 task = pid_task(file->pid, PIDTYPE_PID);
787 seq_printf(m, "pid %8d command %s:\n", pid_nr(file->pid),
788 task ? task->comm : "<unknown>");
789 rcu_read_unlock();
790
791 spin_lock(&file->table_lock);
792 idr_for_each(&file->object_idr, amdgpu_debugfs_gem_bo_info, m);
793 spin_unlock(&file->table_lock);
794 }
795
796 mutex_unlock(&dev->struct_mutex);
797 return 0;
798}
799
800static struct drm_info_list amdgpu_debugfs_gem_list[] = {
801 {"amdgpu_gem_info", &amdgpu_debugfs_gem_info, 0, NULL},
802};
803#endif
804
805int amdgpu_gem_debugfs_init(struct amdgpu_device *adev)
806{
807#if defined(CONFIG_DEBUG_FS)
808 return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_gem_list, 1);
809#endif
810 return 0;
811}
1/*
2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Dave Airlie
25 * Alex Deucher
26 * Jerome Glisse
27 */
28#include <linux/ktime.h>
29#include <linux/pagemap.h>
30#include <drm/drmP.h>
31#include <drm/amdgpu_drm.h>
32#include "amdgpu.h"
33
34void amdgpu_gem_object_free(struct drm_gem_object *gobj)
35{
36 struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj);
37
38 if (robj) {
39 if (robj->gem_base.import_attach)
40 drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg);
41 amdgpu_mn_unregister(robj);
42 amdgpu_bo_unref(&robj);
43 }
44}
45
46int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
47 int alignment, u32 initial_domain,
48 u64 flags, bool kernel,
49 struct drm_gem_object **obj)
50{
51 struct amdgpu_bo *robj;
52 unsigned long max_size;
53 int r;
54
55 *obj = NULL;
56 /* At least align on page size */
57 if (alignment < PAGE_SIZE) {
58 alignment = PAGE_SIZE;
59 }
60
61 if (!(initial_domain & (AMDGPU_GEM_DOMAIN_GDS | AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA))) {
62 /* Maximum bo size is the unpinned gtt size since we use the gtt to
63 * handle vram to system pool migrations.
64 */
65 max_size = adev->mc.gtt_size - adev->gart_pin_size;
66 if (size > max_size) {
67 DRM_DEBUG("Allocation size %ldMb bigger than %ldMb limit\n",
68 size >> 20, max_size >> 20);
69 return -ENOMEM;
70 }
71 }
72retry:
73 r = amdgpu_bo_create(adev, size, alignment, kernel, initial_domain,
74 flags, NULL, NULL, &robj);
75 if (r) {
76 if (r != -ERESTARTSYS) {
77 if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
78 initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
79 goto retry;
80 }
81 DRM_ERROR("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
82 size, initial_domain, alignment, r);
83 }
84 return r;
85 }
86 *obj = &robj->gem_base;
87
88 return 0;
89}
90
91void amdgpu_gem_force_release(struct amdgpu_device *adev)
92{
93 struct drm_device *ddev = adev->ddev;
94 struct drm_file *file;
95
96 mutex_lock(&ddev->filelist_mutex);
97
98 list_for_each_entry(file, &ddev->filelist, lhead) {
99 struct drm_gem_object *gobj;
100 int handle;
101
102 WARN_ONCE(1, "Still active user space clients!\n");
103 spin_lock(&file->table_lock);
104 idr_for_each_entry(&file->object_idr, gobj, handle) {
105 WARN_ONCE(1, "And also active allocations!\n");
106 drm_gem_object_unreference_unlocked(gobj);
107 }
108 idr_destroy(&file->object_idr);
109 spin_unlock(&file->table_lock);
110 }
111
112 mutex_unlock(&ddev->filelist_mutex);
113}
114
115/*
116 * Call from drm_gem_handle_create which appear in both new and open ioctl
117 * case.
118 */
119int amdgpu_gem_object_open(struct drm_gem_object *obj,
120 struct drm_file *file_priv)
121{
122 struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj);
123 struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
124 struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
125 struct amdgpu_vm *vm = &fpriv->vm;
126 struct amdgpu_bo_va *bo_va;
127 int r;
128 r = amdgpu_bo_reserve(abo, false);
129 if (r)
130 return r;
131
132 bo_va = amdgpu_vm_bo_find(vm, abo);
133 if (!bo_va) {
134 bo_va = amdgpu_vm_bo_add(adev, vm, abo);
135 } else {
136 ++bo_va->ref_count;
137 }
138 amdgpu_bo_unreserve(abo);
139 return 0;
140}
141
142void amdgpu_gem_object_close(struct drm_gem_object *obj,
143 struct drm_file *file_priv)
144{
145 struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
146 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
147 struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
148 struct amdgpu_vm *vm = &fpriv->vm;
149
150 struct amdgpu_bo_list_entry vm_pd;
151 struct list_head list, duplicates;
152 struct ttm_validate_buffer tv;
153 struct ww_acquire_ctx ticket;
154 struct amdgpu_bo_va *bo_va;
155 int r;
156
157 INIT_LIST_HEAD(&list);
158 INIT_LIST_HEAD(&duplicates);
159
160 tv.bo = &bo->tbo;
161 tv.shared = true;
162 list_add(&tv.head, &list);
163
164 amdgpu_vm_get_pd_bo(vm, &list, &vm_pd);
165
166 r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates);
167 if (r) {
168 dev_err(adev->dev, "leaking bo va because "
169 "we fail to reserve bo (%d)\n", r);
170 return;
171 }
172 bo_va = amdgpu_vm_bo_find(vm, bo);
173 if (bo_va) {
174 if (--bo_va->ref_count == 0) {
175 amdgpu_vm_bo_rmv(adev, bo_va);
176 }
177 }
178 ttm_eu_backoff_reservation(&ticket, &list);
179}
180
181static int amdgpu_gem_handle_lockup(struct amdgpu_device *adev, int r)
182{
183 if (r == -EDEADLK) {
184 r = amdgpu_gpu_reset(adev);
185 if (!r)
186 r = -EAGAIN;
187 }
188 return r;
189}
190
191/*
192 * GEM ioctls.
193 */
194int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
195 struct drm_file *filp)
196{
197 struct amdgpu_device *adev = dev->dev_private;
198 union drm_amdgpu_gem_create *args = data;
199 uint64_t size = args->in.bo_size;
200 struct drm_gem_object *gobj;
201 uint32_t handle;
202 bool kernel = false;
203 int r;
204
205 /* create a gem object to contain this object in */
206 if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
207 AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
208 kernel = true;
209 if (args->in.domains == AMDGPU_GEM_DOMAIN_GDS)
210 size = size << AMDGPU_GDS_SHIFT;
211 else if (args->in.domains == AMDGPU_GEM_DOMAIN_GWS)
212 size = size << AMDGPU_GWS_SHIFT;
213 else if (args->in.domains == AMDGPU_GEM_DOMAIN_OA)
214 size = size << AMDGPU_OA_SHIFT;
215 else {
216 r = -EINVAL;
217 goto error_unlock;
218 }
219 }
220 size = roundup(size, PAGE_SIZE);
221
222 r = amdgpu_gem_object_create(adev, size, args->in.alignment,
223 (u32)(0xffffffff & args->in.domains),
224 args->in.domain_flags,
225 kernel, &gobj);
226 if (r)
227 goto error_unlock;
228
229 r = drm_gem_handle_create(filp, gobj, &handle);
230 /* drop reference from allocate - handle holds it now */
231 drm_gem_object_unreference_unlocked(gobj);
232 if (r)
233 goto error_unlock;
234
235 memset(args, 0, sizeof(*args));
236 args->out.handle = handle;
237 return 0;
238
239error_unlock:
240 r = amdgpu_gem_handle_lockup(adev, r);
241 return r;
242}
243
244int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
245 struct drm_file *filp)
246{
247 struct amdgpu_device *adev = dev->dev_private;
248 struct drm_amdgpu_gem_userptr *args = data;
249 struct drm_gem_object *gobj;
250 struct amdgpu_bo *bo;
251 uint32_t handle;
252 int r;
253
254 if (offset_in_page(args->addr | args->size))
255 return -EINVAL;
256
257 /* reject unknown flag values */
258 if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
259 AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
260 AMDGPU_GEM_USERPTR_REGISTER))
261 return -EINVAL;
262
263 if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
264 !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
265
266 /* if we want to write to it we must install a MMU notifier */
267 return -EACCES;
268 }
269
270 /* create a gem object to contain this object in */
271 r = amdgpu_gem_object_create(adev, args->size, 0,
272 AMDGPU_GEM_DOMAIN_CPU, 0,
273 0, &gobj);
274 if (r)
275 goto handle_lockup;
276
277 bo = gem_to_amdgpu_bo(gobj);
278 bo->prefered_domains = AMDGPU_GEM_DOMAIN_GTT;
279 bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
280 r = amdgpu_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags);
281 if (r)
282 goto release_object;
283
284 if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) {
285 r = amdgpu_mn_register(bo, args->addr);
286 if (r)
287 goto release_object;
288 }
289
290 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
291 down_read(¤t->mm->mmap_sem);
292
293 r = amdgpu_ttm_tt_get_user_pages(bo->tbo.ttm,
294 bo->tbo.ttm->pages);
295 if (r)
296 goto unlock_mmap_sem;
297
298 r = amdgpu_bo_reserve(bo, true);
299 if (r)
300 goto free_pages;
301
302 amdgpu_ttm_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
303 r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
304 amdgpu_bo_unreserve(bo);
305 if (r)
306 goto free_pages;
307
308 up_read(¤t->mm->mmap_sem);
309 }
310
311 r = drm_gem_handle_create(filp, gobj, &handle);
312 /* drop reference from allocate - handle holds it now */
313 drm_gem_object_unreference_unlocked(gobj);
314 if (r)
315 goto handle_lockup;
316
317 args->handle = handle;
318 return 0;
319
320free_pages:
321 release_pages(bo->tbo.ttm->pages, bo->tbo.ttm->num_pages, false);
322
323unlock_mmap_sem:
324 up_read(¤t->mm->mmap_sem);
325
326release_object:
327 drm_gem_object_unreference_unlocked(gobj);
328
329handle_lockup:
330 r = amdgpu_gem_handle_lockup(adev, r);
331
332 return r;
333}
334
335int amdgpu_mode_dumb_mmap(struct drm_file *filp,
336 struct drm_device *dev,
337 uint32_t handle, uint64_t *offset_p)
338{
339 struct drm_gem_object *gobj;
340 struct amdgpu_bo *robj;
341
342 gobj = drm_gem_object_lookup(filp, handle);
343 if (gobj == NULL) {
344 return -ENOENT;
345 }
346 robj = gem_to_amdgpu_bo(gobj);
347 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) ||
348 (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) {
349 drm_gem_object_unreference_unlocked(gobj);
350 return -EPERM;
351 }
352 *offset_p = amdgpu_bo_mmap_offset(robj);
353 drm_gem_object_unreference_unlocked(gobj);
354 return 0;
355}
356
357int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data,
358 struct drm_file *filp)
359{
360 union drm_amdgpu_gem_mmap *args = data;
361 uint32_t handle = args->in.handle;
362 memset(args, 0, sizeof(*args));
363 return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);
364}
365
366/**
367 * amdgpu_gem_timeout - calculate jiffies timeout from absolute value
368 *
369 * @timeout_ns: timeout in ns
370 *
371 * Calculate the timeout in jiffies from an absolute timeout in ns.
372 */
373unsigned long amdgpu_gem_timeout(uint64_t timeout_ns)
374{
375 unsigned long timeout_jiffies;
376 ktime_t timeout;
377
378 /* clamp timeout if it's to large */
379 if (((int64_t)timeout_ns) < 0)
380 return MAX_SCHEDULE_TIMEOUT;
381
382 timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get());
383 if (ktime_to_ns(timeout) < 0)
384 return 0;
385
386 timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout));
387 /* clamp timeout to avoid unsigned-> signed overflow */
388 if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT )
389 return MAX_SCHEDULE_TIMEOUT - 1;
390
391 return timeout_jiffies;
392}
393
394int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
395 struct drm_file *filp)
396{
397 struct amdgpu_device *adev = dev->dev_private;
398 union drm_amdgpu_gem_wait_idle *args = data;
399 struct drm_gem_object *gobj;
400 struct amdgpu_bo *robj;
401 uint32_t handle = args->in.handle;
402 unsigned long timeout = amdgpu_gem_timeout(args->in.timeout);
403 int r = 0;
404 long ret;
405
406 gobj = drm_gem_object_lookup(filp, handle);
407 if (gobj == NULL) {
408 return -ENOENT;
409 }
410 robj = gem_to_amdgpu_bo(gobj);
411 ret = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true,
412 timeout);
413
414 /* ret == 0 means not signaled,
415 * ret > 0 means signaled
416 * ret < 0 means interrupted before timeout
417 */
418 if (ret >= 0) {
419 memset(args, 0, sizeof(*args));
420 args->out.status = (ret == 0);
421 } else
422 r = ret;
423
424 drm_gem_object_unreference_unlocked(gobj);
425 r = amdgpu_gem_handle_lockup(adev, r);
426 return r;
427}
428
429int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
430 struct drm_file *filp)
431{
432 struct drm_amdgpu_gem_metadata *args = data;
433 struct drm_gem_object *gobj;
434 struct amdgpu_bo *robj;
435 int r = -1;
436
437 DRM_DEBUG("%d \n", args->handle);
438 gobj = drm_gem_object_lookup(filp, args->handle);
439 if (gobj == NULL)
440 return -ENOENT;
441 robj = gem_to_amdgpu_bo(gobj);
442
443 r = amdgpu_bo_reserve(robj, false);
444 if (unlikely(r != 0))
445 goto out;
446
447 if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) {
448 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info);
449 r = amdgpu_bo_get_metadata(robj, args->data.data,
450 sizeof(args->data.data),
451 &args->data.data_size_bytes,
452 &args->data.flags);
453 } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) {
454 if (args->data.data_size_bytes > sizeof(args->data.data)) {
455 r = -EINVAL;
456 goto unreserve;
457 }
458 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info);
459 if (!r)
460 r = amdgpu_bo_set_metadata(robj, args->data.data,
461 args->data.data_size_bytes,
462 args->data.flags);
463 }
464
465unreserve:
466 amdgpu_bo_unreserve(robj);
467out:
468 drm_gem_object_unreference_unlocked(gobj);
469 return r;
470}
471
472static int amdgpu_gem_va_check(void *param, struct amdgpu_bo *bo)
473{
474 unsigned domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
475
476 /* if anything is swapped out don't swap it in here,
477 just abort and wait for the next CS */
478
479 return domain == AMDGPU_GEM_DOMAIN_CPU ? -ERESTARTSYS : 0;
480}
481
482/**
483 * amdgpu_gem_va_update_vm -update the bo_va in its VM
484 *
485 * @adev: amdgpu_device pointer
486 * @bo_va: bo_va to update
487 *
488 * Update the bo_va directly after setting it's address. Errors are not
489 * vital here, so they are not reported back to userspace.
490 */
491static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
492 struct amdgpu_bo_va *bo_va,
493 uint32_t operation)
494{
495 struct ttm_validate_buffer tv, *entry;
496 struct amdgpu_bo_list_entry vm_pd;
497 struct ww_acquire_ctx ticket;
498 struct list_head list, duplicates;
499 unsigned domain;
500 int r;
501
502 INIT_LIST_HEAD(&list);
503 INIT_LIST_HEAD(&duplicates);
504
505 tv.bo = &bo_va->bo->tbo;
506 tv.shared = true;
507 list_add(&tv.head, &list);
508
509 amdgpu_vm_get_pd_bo(bo_va->vm, &list, &vm_pd);
510
511 /* Provide duplicates to avoid -EALREADY */
512 r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
513 if (r)
514 goto error_print;
515
516 list_for_each_entry(entry, &list, head) {
517 domain = amdgpu_mem_type_to_domain(entry->bo->mem.mem_type);
518 /* if anything is swapped out don't swap it in here,
519 just abort and wait for the next CS */
520 if (domain == AMDGPU_GEM_DOMAIN_CPU)
521 goto error_unreserve;
522 }
523 r = amdgpu_vm_validate_pt_bos(adev, bo_va->vm, amdgpu_gem_va_check,
524 NULL);
525 if (r)
526 goto error_unreserve;
527
528 r = amdgpu_vm_update_page_directory(adev, bo_va->vm);
529 if (r)
530 goto error_unreserve;
531
532 r = amdgpu_vm_clear_freed(adev, bo_va->vm);
533 if (r)
534 goto error_unreserve;
535
536 if (operation == AMDGPU_VA_OP_MAP)
537 r = amdgpu_vm_bo_update(adev, bo_va, false);
538
539error_unreserve:
540 ttm_eu_backoff_reservation(&ticket, &list);
541
542error_print:
543 if (r && r != -ERESTARTSYS)
544 DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
545}
546
547int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
548 struct drm_file *filp)
549{
550 struct drm_amdgpu_gem_va *args = data;
551 struct drm_gem_object *gobj;
552 struct amdgpu_device *adev = dev->dev_private;
553 struct amdgpu_fpriv *fpriv = filp->driver_priv;
554 struct amdgpu_bo *abo;
555 struct amdgpu_bo_va *bo_va;
556 struct amdgpu_bo_list_entry vm_pd;
557 struct ttm_validate_buffer tv;
558 struct ww_acquire_ctx ticket;
559 struct list_head list, duplicates;
560 uint32_t invalid_flags, va_flags = 0;
561 int r = 0;
562
563 if (!adev->vm_manager.enabled)
564 return -ENOTTY;
565
566 if (args->va_address < AMDGPU_VA_RESERVED_SIZE) {
567 dev_err(&dev->pdev->dev,
568 "va_address 0x%lX is in reserved area 0x%X\n",
569 (unsigned long)args->va_address,
570 AMDGPU_VA_RESERVED_SIZE);
571 return -EINVAL;
572 }
573
574 invalid_flags = ~(AMDGPU_VM_DELAY_UPDATE | AMDGPU_VM_PAGE_READABLE |
575 AMDGPU_VM_PAGE_WRITEABLE | AMDGPU_VM_PAGE_EXECUTABLE);
576 if ((args->flags & invalid_flags)) {
577 dev_err(&dev->pdev->dev, "invalid flags 0x%08X vs 0x%08X\n",
578 args->flags, invalid_flags);
579 return -EINVAL;
580 }
581
582 switch (args->operation) {
583 case AMDGPU_VA_OP_MAP:
584 case AMDGPU_VA_OP_UNMAP:
585 break;
586 default:
587 dev_err(&dev->pdev->dev, "unsupported operation %d\n",
588 args->operation);
589 return -EINVAL;
590 }
591
592 gobj = drm_gem_object_lookup(filp, args->handle);
593 if (gobj == NULL)
594 return -ENOENT;
595 abo = gem_to_amdgpu_bo(gobj);
596 INIT_LIST_HEAD(&list);
597 INIT_LIST_HEAD(&duplicates);
598 tv.bo = &abo->tbo;
599 tv.shared = true;
600 list_add(&tv.head, &list);
601
602 amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd);
603
604 r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
605 if (r) {
606 drm_gem_object_unreference_unlocked(gobj);
607 return r;
608 }
609
610 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo);
611 if (!bo_va) {
612 ttm_eu_backoff_reservation(&ticket, &list);
613 drm_gem_object_unreference_unlocked(gobj);
614 return -ENOENT;
615 }
616
617 switch (args->operation) {
618 case AMDGPU_VA_OP_MAP:
619 if (args->flags & AMDGPU_VM_PAGE_READABLE)
620 va_flags |= AMDGPU_PTE_READABLE;
621 if (args->flags & AMDGPU_VM_PAGE_WRITEABLE)
622 va_flags |= AMDGPU_PTE_WRITEABLE;
623 if (args->flags & AMDGPU_VM_PAGE_EXECUTABLE)
624 va_flags |= AMDGPU_PTE_EXECUTABLE;
625 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
626 args->offset_in_bo, args->map_size,
627 va_flags);
628 break;
629 case AMDGPU_VA_OP_UNMAP:
630 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
631 break;
632 default:
633 break;
634 }
635 ttm_eu_backoff_reservation(&ticket, &list);
636 if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) &&
637 !amdgpu_vm_debug)
638 amdgpu_gem_va_update_vm(adev, bo_va, args->operation);
639
640 drm_gem_object_unreference_unlocked(gobj);
641 return r;
642}
643
644int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
645 struct drm_file *filp)
646{
647 struct drm_amdgpu_gem_op *args = data;
648 struct drm_gem_object *gobj;
649 struct amdgpu_bo *robj;
650 int r;
651
652 gobj = drm_gem_object_lookup(filp, args->handle);
653 if (gobj == NULL) {
654 return -ENOENT;
655 }
656 robj = gem_to_amdgpu_bo(gobj);
657
658 r = amdgpu_bo_reserve(robj, false);
659 if (unlikely(r))
660 goto out;
661
662 switch (args->op) {
663 case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: {
664 struct drm_amdgpu_gem_create_in info;
665 void __user *out = (void __user *)(long)args->value;
666
667 info.bo_size = robj->gem_base.size;
668 info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT;
669 info.domains = robj->prefered_domains;
670 info.domain_flags = robj->flags;
671 amdgpu_bo_unreserve(robj);
672 if (copy_to_user(out, &info, sizeof(info)))
673 r = -EFAULT;
674 break;
675 }
676 case AMDGPU_GEM_OP_SET_PLACEMENT:
677 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) {
678 r = -EPERM;
679 amdgpu_bo_unreserve(robj);
680 break;
681 }
682 robj->prefered_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM |
683 AMDGPU_GEM_DOMAIN_GTT |
684 AMDGPU_GEM_DOMAIN_CPU);
685 robj->allowed_domains = robj->prefered_domains;
686 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
687 robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
688
689 amdgpu_bo_unreserve(robj);
690 break;
691 default:
692 amdgpu_bo_unreserve(robj);
693 r = -EINVAL;
694 }
695
696out:
697 drm_gem_object_unreference_unlocked(gobj);
698 return r;
699}
700
701int amdgpu_mode_dumb_create(struct drm_file *file_priv,
702 struct drm_device *dev,
703 struct drm_mode_create_dumb *args)
704{
705 struct amdgpu_device *adev = dev->dev_private;
706 struct drm_gem_object *gobj;
707 uint32_t handle;
708 int r;
709
710 args->pitch = amdgpu_align_pitch(adev, args->width,
711 DIV_ROUND_UP(args->bpp, 8), 0);
712 args->size = (u64)args->pitch * args->height;
713 args->size = ALIGN(args->size, PAGE_SIZE);
714
715 r = amdgpu_gem_object_create(adev, args->size, 0,
716 AMDGPU_GEM_DOMAIN_VRAM,
717 AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
718 ttm_bo_type_device,
719 &gobj);
720 if (r)
721 return -ENOMEM;
722
723 r = drm_gem_handle_create(file_priv, gobj, &handle);
724 /* drop reference from allocate - handle holds it now */
725 drm_gem_object_unreference_unlocked(gobj);
726 if (r) {
727 return r;
728 }
729 args->handle = handle;
730 return 0;
731}
732
733#if defined(CONFIG_DEBUG_FS)
734static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data)
735{
736 struct drm_gem_object *gobj = ptr;
737 struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj);
738 struct seq_file *m = data;
739
740 unsigned domain;
741 const char *placement;
742 unsigned pin_count;
743
744 domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
745 switch (domain) {
746 case AMDGPU_GEM_DOMAIN_VRAM:
747 placement = "VRAM";
748 break;
749 case AMDGPU_GEM_DOMAIN_GTT:
750 placement = " GTT";
751 break;
752 case AMDGPU_GEM_DOMAIN_CPU:
753 default:
754 placement = " CPU";
755 break;
756 }
757 seq_printf(m, "\t0x%08x: %12ld byte %s @ 0x%010Lx",
758 id, amdgpu_bo_size(bo), placement,
759 amdgpu_bo_gpu_offset(bo));
760
761 pin_count = ACCESS_ONCE(bo->pin_count);
762 if (pin_count)
763 seq_printf(m, " pin count %d", pin_count);
764 seq_printf(m, "\n");
765
766 return 0;
767}
768
769static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data)
770{
771 struct drm_info_node *node = (struct drm_info_node *)m->private;
772 struct drm_device *dev = node->minor->dev;
773 struct drm_file *file;
774 int r;
775
776 r = mutex_lock_interruptible(&dev->filelist_mutex);
777 if (r)
778 return r;
779
780 list_for_each_entry(file, &dev->filelist, lhead) {
781 struct task_struct *task;
782
783 /*
784 * Although we have a valid reference on file->pid, that does
785 * not guarantee that the task_struct who called get_pid() is
786 * still alive (e.g. get_pid(current) => fork() => exit()).
787 * Therefore, we need to protect this ->comm access using RCU.
788 */
789 rcu_read_lock();
790 task = pid_task(file->pid, PIDTYPE_PID);
791 seq_printf(m, "pid %8d command %s:\n", pid_nr(file->pid),
792 task ? task->comm : "<unknown>");
793 rcu_read_unlock();
794
795 spin_lock(&file->table_lock);
796 idr_for_each(&file->object_idr, amdgpu_debugfs_gem_bo_info, m);
797 spin_unlock(&file->table_lock);
798 }
799
800 mutex_unlock(&dev->filelist_mutex);
801 return 0;
802}
803
804static const struct drm_info_list amdgpu_debugfs_gem_list[] = {
805 {"amdgpu_gem_info", &amdgpu_debugfs_gem_info, 0, NULL},
806};
807#endif
808
809int amdgpu_gem_debugfs_init(struct amdgpu_device *adev)
810{
811#if defined(CONFIG_DEBUG_FS)
812 return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_gem_list, 1);
813#endif
814 return 0;
815}