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Merge tag 'drm-misc-next-fixes-2018-05-31' of git://anongit.freedesktop.org/drm/drm...
[linux.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_gem.c
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
34 void 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                 amdgpu_mn_unregister(robj);
40                 amdgpu_bo_unref(&robj);
41         }
42 }
43
44 int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
45                              int alignment, u32 initial_domain,
46                              u64 flags, enum ttm_bo_type type,
47                              struct reservation_object *resv,
48                              struct drm_gem_object **obj)
49 {
50         struct amdgpu_bo *bo;
51         struct amdgpu_bo_param bp;
52         int r;
53
54         memset(&bp, 0, sizeof(bp));
55         *obj = NULL;
56         /* At least align on page size */
57         if (alignment < PAGE_SIZE) {
58                 alignment = PAGE_SIZE;
59         }
60
61         bp.size = size;
62         bp.byte_align = alignment;
63         bp.type = type;
64         bp.resv = resv;
65         bp.preferred_domain = initial_domain;
66 retry:
67         bp.flags = flags;
68         bp.domain = initial_domain;
69         r = amdgpu_bo_create(adev, &bp, &bo);
70         if (r) {
71                 if (r != -ERESTARTSYS) {
72                         if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
73                                 flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
74                                 goto retry;
75                         }
76
77                         if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
78                                 initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
79                                 goto retry;
80                         }
81                         DRM_DEBUG("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
82                                   size, initial_domain, alignment, r);
83                 }
84                 return r;
85         }
86         *obj = &bo->gem_base;
87
88         return 0;
89 }
90
91 void 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_put_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  */
119 int 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         struct mm_struct *mm;
128         int r;
129
130         mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm);
131         if (mm && mm != current->mm)
132                 return -EPERM;
133
134         if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID &&
135             abo->tbo.resv != vm->root.base.bo->tbo.resv)
136                 return -EPERM;
137
138         r = amdgpu_bo_reserve(abo, false);
139         if (r)
140                 return r;
141
142         bo_va = amdgpu_vm_bo_find(vm, abo);
143         if (!bo_va) {
144                 bo_va = amdgpu_vm_bo_add(adev, vm, abo);
145         } else {
146                 ++bo_va->ref_count;
147         }
148         amdgpu_bo_unreserve(abo);
149         return 0;
150 }
151
152 void amdgpu_gem_object_close(struct drm_gem_object *obj,
153                              struct drm_file *file_priv)
154 {
155         struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
156         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
157         struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
158         struct amdgpu_vm *vm = &fpriv->vm;
159
160         struct amdgpu_bo_list_entry vm_pd;
161         struct list_head list, duplicates;
162         struct ttm_validate_buffer tv;
163         struct ww_acquire_ctx ticket;
164         struct amdgpu_bo_va *bo_va;
165         int r;
166
167         INIT_LIST_HEAD(&list);
168         INIT_LIST_HEAD(&duplicates);
169
170         tv.bo = &bo->tbo;
171         tv.shared = true;
172         list_add(&tv.head, &list);
173
174         amdgpu_vm_get_pd_bo(vm, &list, &vm_pd);
175
176         r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates);
177         if (r) {
178                 dev_err(adev->dev, "leaking bo va because "
179                         "we fail to reserve bo (%d)\n", r);
180                 return;
181         }
182         bo_va = amdgpu_vm_bo_find(vm, bo);
183         if (bo_va && --bo_va->ref_count == 0) {
184                 amdgpu_vm_bo_rmv(adev, bo_va);
185
186                 if (amdgpu_vm_ready(vm)) {
187                         struct dma_fence *fence = NULL;
188
189                         r = amdgpu_vm_clear_freed(adev, vm, &fence);
190                         if (unlikely(r)) {
191                                 dev_err(adev->dev, "failed to clear page "
192                                         "tables on GEM object close (%d)\n", r);
193                         }
194
195                         if (fence) {
196                                 amdgpu_bo_fence(bo, fence, true);
197                                 dma_fence_put(fence);
198                         }
199                 }
200         }
201         ttm_eu_backoff_reservation(&ticket, &list);
202 }
203
204 /*
205  * GEM ioctls.
206  */
207 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
208                             struct drm_file *filp)
209 {
210         struct amdgpu_device *adev = dev->dev_private;
211         struct amdgpu_fpriv *fpriv = filp->driver_priv;
212         struct amdgpu_vm *vm = &fpriv->vm;
213         union drm_amdgpu_gem_create *args = data;
214         uint64_t flags = args->in.domain_flags;
215         uint64_t size = args->in.bo_size;
216         struct reservation_object *resv = NULL;
217         struct drm_gem_object *gobj;
218         uint32_t handle;
219         int r;
220
221         /* reject invalid gem flags */
222         if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
223                       AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
224                       AMDGPU_GEM_CREATE_CPU_GTT_USWC |
225                       AMDGPU_GEM_CREATE_VRAM_CLEARED |
226                       AMDGPU_GEM_CREATE_VM_ALWAYS_VALID |
227                       AMDGPU_GEM_CREATE_EXPLICIT_SYNC))
228
229                 return -EINVAL;
230
231         /* reject invalid gem domains */
232         if (args->in.domains & ~AMDGPU_GEM_DOMAIN_MASK)
233                 return -EINVAL;
234
235         /* create a gem object to contain this object in */
236         if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
237             AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
238                 flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
239                 if (args->in.domains == AMDGPU_GEM_DOMAIN_GDS)
240                         size = size << AMDGPU_GDS_SHIFT;
241                 else if (args->in.domains == AMDGPU_GEM_DOMAIN_GWS)
242                         size = size << AMDGPU_GWS_SHIFT;
243                 else if (args->in.domains == AMDGPU_GEM_DOMAIN_OA)
244                         size = size << AMDGPU_OA_SHIFT;
245                 else
246                         return -EINVAL;
247         }
248         size = roundup(size, PAGE_SIZE);
249
250         if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
251                 r = amdgpu_bo_reserve(vm->root.base.bo, false);
252                 if (r)
253                         return r;
254
255                 resv = vm->root.base.bo->tbo.resv;
256         }
257
258         r = amdgpu_gem_object_create(adev, size, args->in.alignment,
259                                      (u32)(0xffffffff & args->in.domains),
260                                      flags, false, resv, &gobj);
261         if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
262                 if (!r) {
263                         struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj);
264
265                         abo->parent = amdgpu_bo_ref(vm->root.base.bo);
266                 }
267                 amdgpu_bo_unreserve(vm->root.base.bo);
268         }
269         if (r)
270                 return r;
271
272         r = drm_gem_handle_create(filp, gobj, &handle);
273         /* drop reference from allocate - handle holds it now */
274         drm_gem_object_put_unlocked(gobj);
275         if (r)
276                 return r;
277
278         memset(args, 0, sizeof(*args));
279         args->out.handle = handle;
280         return 0;
281 }
282
283 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
284                              struct drm_file *filp)
285 {
286         struct ttm_operation_ctx ctx = { true, false };
287         struct amdgpu_device *adev = dev->dev_private;
288         struct drm_amdgpu_gem_userptr *args = data;
289         struct drm_gem_object *gobj;
290         struct amdgpu_bo *bo;
291         uint32_t handle;
292         int r;
293
294         if (offset_in_page(args->addr | args->size))
295                 return -EINVAL;
296
297         /* reject unknown flag values */
298         if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
299             AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
300             AMDGPU_GEM_USERPTR_REGISTER))
301                 return -EINVAL;
302
303         if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
304              !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
305
306                 /* if we want to write to it we must install a MMU notifier */
307                 return -EACCES;
308         }
309
310         /* create a gem object to contain this object in */
311         r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU,
312                                      0, 0, NULL, &gobj);
313         if (r)
314                 return r;
315
316         bo = gem_to_amdgpu_bo(gobj);
317         bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT;
318         bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
319         r = amdgpu_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags);
320         if (r)
321                 goto release_object;
322
323         if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) {
324                 r = amdgpu_mn_register(bo, args->addr);
325                 if (r)
326                         goto release_object;
327         }
328
329         if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
330                 r = amdgpu_ttm_tt_get_user_pages(bo->tbo.ttm,
331                                                  bo->tbo.ttm->pages);
332                 if (r)
333                         goto release_object;
334
335                 r = amdgpu_bo_reserve(bo, true);
336                 if (r)
337                         goto free_pages;
338
339                 amdgpu_ttm_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
340                 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
341                 amdgpu_bo_unreserve(bo);
342                 if (r)
343                         goto free_pages;
344         }
345
346         r = drm_gem_handle_create(filp, gobj, &handle);
347         /* drop reference from allocate - handle holds it now */
348         drm_gem_object_put_unlocked(gobj);
349         if (r)
350                 return r;
351
352         args->handle = handle;
353         return 0;
354
355 free_pages:
356         release_pages(bo->tbo.ttm->pages, bo->tbo.ttm->num_pages);
357
358 release_object:
359         drm_gem_object_put_unlocked(gobj);
360
361         return r;
362 }
363
364 int amdgpu_mode_dumb_mmap(struct drm_file *filp,
365                           struct drm_device *dev,
366                           uint32_t handle, uint64_t *offset_p)
367 {
368         struct drm_gem_object *gobj;
369         struct amdgpu_bo *robj;
370
371         gobj = drm_gem_object_lookup(filp, handle);
372         if (gobj == NULL) {
373                 return -ENOENT;
374         }
375         robj = gem_to_amdgpu_bo(gobj);
376         if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) ||
377             (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) {
378                 drm_gem_object_put_unlocked(gobj);
379                 return -EPERM;
380         }
381         *offset_p = amdgpu_bo_mmap_offset(robj);
382         drm_gem_object_put_unlocked(gobj);
383         return 0;
384 }
385
386 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data,
387                           struct drm_file *filp)
388 {
389         union drm_amdgpu_gem_mmap *args = data;
390         uint32_t handle = args->in.handle;
391         memset(args, 0, sizeof(*args));
392         return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);
393 }
394
395 /**
396  * amdgpu_gem_timeout - calculate jiffies timeout from absolute value
397  *
398  * @timeout_ns: timeout in ns
399  *
400  * Calculate the timeout in jiffies from an absolute timeout in ns.
401  */
402 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns)
403 {
404         unsigned long timeout_jiffies;
405         ktime_t timeout;
406
407         /* clamp timeout if it's to large */
408         if (((int64_t)timeout_ns) < 0)
409                 return MAX_SCHEDULE_TIMEOUT;
410
411         timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get());
412         if (ktime_to_ns(timeout) < 0)
413                 return 0;
414
415         timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout));
416         /*  clamp timeout to avoid unsigned-> signed overflow */
417         if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT )
418                 return MAX_SCHEDULE_TIMEOUT - 1;
419
420         return timeout_jiffies;
421 }
422
423 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
424                               struct drm_file *filp)
425 {
426         union drm_amdgpu_gem_wait_idle *args = data;
427         struct drm_gem_object *gobj;
428         struct amdgpu_bo *robj;
429         uint32_t handle = args->in.handle;
430         unsigned long timeout = amdgpu_gem_timeout(args->in.timeout);
431         int r = 0;
432         long ret;
433
434         gobj = drm_gem_object_lookup(filp, handle);
435         if (gobj == NULL) {
436                 return -ENOENT;
437         }
438         robj = gem_to_amdgpu_bo(gobj);
439         ret = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true,
440                                                   timeout);
441
442         /* ret == 0 means not signaled,
443          * ret > 0 means signaled
444          * ret < 0 means interrupted before timeout
445          */
446         if (ret >= 0) {
447                 memset(args, 0, sizeof(*args));
448                 args->out.status = (ret == 0);
449         } else
450                 r = ret;
451
452         drm_gem_object_put_unlocked(gobj);
453         return r;
454 }
455
456 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
457                                 struct drm_file *filp)
458 {
459         struct drm_amdgpu_gem_metadata *args = data;
460         struct drm_gem_object *gobj;
461         struct amdgpu_bo *robj;
462         int r = -1;
463
464         DRM_DEBUG("%d \n", args->handle);
465         gobj = drm_gem_object_lookup(filp, args->handle);
466         if (gobj == NULL)
467                 return -ENOENT;
468         robj = gem_to_amdgpu_bo(gobj);
469
470         r = amdgpu_bo_reserve(robj, false);
471         if (unlikely(r != 0))
472                 goto out;
473
474         if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) {
475                 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info);
476                 r = amdgpu_bo_get_metadata(robj, args->data.data,
477                                            sizeof(args->data.data),
478                                            &args->data.data_size_bytes,
479                                            &args->data.flags);
480         } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) {
481                 if (args->data.data_size_bytes > sizeof(args->data.data)) {
482                         r = -EINVAL;
483                         goto unreserve;
484                 }
485                 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info);
486                 if (!r)
487                         r = amdgpu_bo_set_metadata(robj, args->data.data,
488                                                    args->data.data_size_bytes,
489                                                    args->data.flags);
490         }
491
492 unreserve:
493         amdgpu_bo_unreserve(robj);
494 out:
495         drm_gem_object_put_unlocked(gobj);
496         return r;
497 }
498
499 /**
500  * amdgpu_gem_va_update_vm -update the bo_va in its VM
501  *
502  * @adev: amdgpu_device pointer
503  * @vm: vm to update
504  * @bo_va: bo_va to update
505  * @list: validation list
506  * @operation: map, unmap or clear
507  *
508  * Update the bo_va directly after setting its address. Errors are not
509  * vital here, so they are not reported back to userspace.
510  */
511 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
512                                     struct amdgpu_vm *vm,
513                                     struct amdgpu_bo_va *bo_va,
514                                     struct list_head *list,
515                                     uint32_t operation)
516 {
517         int r;
518
519         if (!amdgpu_vm_ready(vm))
520                 return;
521
522         r = amdgpu_vm_clear_freed(adev, vm, NULL);
523         if (r)
524                 goto error;
525
526         if (operation == AMDGPU_VA_OP_MAP ||
527             operation == AMDGPU_VA_OP_REPLACE) {
528                 r = amdgpu_vm_bo_update(adev, bo_va, false);
529                 if (r)
530                         goto error;
531         }
532
533         r = amdgpu_vm_update_directories(adev, vm);
534
535 error:
536         if (r && r != -ERESTARTSYS)
537                 DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
538 }
539
540 int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
541                           struct drm_file *filp)
542 {
543         const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE |
544                 AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE |
545                 AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK;
546         const uint32_t prt_flags = AMDGPU_VM_DELAY_UPDATE |
547                 AMDGPU_VM_PAGE_PRT;
548
549         struct drm_amdgpu_gem_va *args = data;
550         struct drm_gem_object *gobj;
551         struct amdgpu_device *adev = dev->dev_private;
552         struct amdgpu_fpriv *fpriv = filp->driver_priv;
553         struct amdgpu_bo *abo;
554         struct amdgpu_bo_va *bo_va;
555         struct amdgpu_bo_list_entry vm_pd;
556         struct ttm_validate_buffer tv;
557         struct ww_acquire_ctx ticket;
558         struct list_head list, duplicates;
559         uint64_t va_flags;
560         int r = 0;
561
562         if (args->va_address < AMDGPU_VA_RESERVED_SIZE) {
563                 dev_dbg(&dev->pdev->dev,
564                         "va_address 0x%LX is in reserved area 0x%LX\n",
565                         args->va_address, AMDGPU_VA_RESERVED_SIZE);
566                 return -EINVAL;
567         }
568
569         if (args->va_address >= AMDGPU_VA_HOLE_START &&
570             args->va_address < AMDGPU_VA_HOLE_END) {
571                 dev_dbg(&dev->pdev->dev,
572                         "va_address 0x%LX is in VA hole 0x%LX-0x%LX\n",
573                         args->va_address, AMDGPU_VA_HOLE_START,
574                         AMDGPU_VA_HOLE_END);
575                 return -EINVAL;
576         }
577
578         args->va_address &= AMDGPU_VA_HOLE_MASK;
579
580         if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) {
581                 dev_dbg(&dev->pdev->dev, "invalid flags combination 0x%08X\n",
582                         args->flags);
583                 return -EINVAL;
584         }
585
586         switch (args->operation) {
587         case AMDGPU_VA_OP_MAP:
588         case AMDGPU_VA_OP_UNMAP:
589         case AMDGPU_VA_OP_CLEAR:
590         case AMDGPU_VA_OP_REPLACE:
591                 break;
592         default:
593                 dev_dbg(&dev->pdev->dev, "unsupported operation %d\n",
594                         args->operation);
595                 return -EINVAL;
596         }
597
598         INIT_LIST_HEAD(&list);
599         INIT_LIST_HEAD(&duplicates);
600         if ((args->operation != AMDGPU_VA_OP_CLEAR) &&
601             !(args->flags & AMDGPU_VM_PAGE_PRT)) {
602                 gobj = drm_gem_object_lookup(filp, args->handle);
603                 if (gobj == NULL)
604                         return -ENOENT;
605                 abo = gem_to_amdgpu_bo(gobj);
606                 tv.bo = &abo->tbo;
607                 tv.shared = false;
608                 list_add(&tv.head, &list);
609         } else {
610                 gobj = NULL;
611                 abo = NULL;
612         }
613
614         amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd);
615
616         r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
617         if (r)
618                 goto error_unref;
619
620         if (abo) {
621                 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo);
622                 if (!bo_va) {
623                         r = -ENOENT;
624                         goto error_backoff;
625                 }
626         } else if (args->operation != AMDGPU_VA_OP_CLEAR) {
627                 bo_va = fpriv->prt_va;
628         } else {
629                 bo_va = NULL;
630         }
631
632         switch (args->operation) {
633         case AMDGPU_VA_OP_MAP:
634                 r = amdgpu_vm_alloc_pts(adev, bo_va->base.vm, args->va_address,
635                                         args->map_size);
636                 if (r)
637                         goto error_backoff;
638
639                 va_flags = amdgpu_gmc_get_pte_flags(adev, args->flags);
640                 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
641                                      args->offset_in_bo, args->map_size,
642                                      va_flags);
643                 break;
644         case AMDGPU_VA_OP_UNMAP:
645                 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
646                 break;
647
648         case AMDGPU_VA_OP_CLEAR:
649                 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm,
650                                                 args->va_address,
651                                                 args->map_size);
652                 break;
653         case AMDGPU_VA_OP_REPLACE:
654                 r = amdgpu_vm_alloc_pts(adev, bo_va->base.vm, args->va_address,
655                                         args->map_size);
656                 if (r)
657                         goto error_backoff;
658
659                 va_flags = amdgpu_gmc_get_pte_flags(adev, args->flags);
660                 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address,
661                                              args->offset_in_bo, args->map_size,
662                                              va_flags);
663                 break;
664         default:
665                 break;
666         }
667         if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !amdgpu_vm_debug)
668                 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va, &list,
669                                         args->operation);
670
671 error_backoff:
672         ttm_eu_backoff_reservation(&ticket, &list);
673
674 error_unref:
675         drm_gem_object_put_unlocked(gobj);
676         return r;
677 }
678
679 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
680                         struct drm_file *filp)
681 {
682         struct amdgpu_device *adev = dev->dev_private;
683         struct drm_amdgpu_gem_op *args = data;
684         struct drm_gem_object *gobj;
685         struct amdgpu_bo *robj;
686         int r;
687
688         gobj = drm_gem_object_lookup(filp, args->handle);
689         if (gobj == NULL) {
690                 return -ENOENT;
691         }
692         robj = gem_to_amdgpu_bo(gobj);
693
694         r = amdgpu_bo_reserve(robj, false);
695         if (unlikely(r))
696                 goto out;
697
698         switch (args->op) {
699         case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: {
700                 struct drm_amdgpu_gem_create_in info;
701                 void __user *out = u64_to_user_ptr(args->value);
702
703                 info.bo_size = robj->gem_base.size;
704                 info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT;
705                 info.domains = robj->preferred_domains;
706                 info.domain_flags = robj->flags;
707                 amdgpu_bo_unreserve(robj);
708                 if (copy_to_user(out, &info, sizeof(info)))
709                         r = -EFAULT;
710                 break;
711         }
712         case AMDGPU_GEM_OP_SET_PLACEMENT:
713                 if (robj->prime_shared_count && (args->value & AMDGPU_GEM_DOMAIN_VRAM)) {
714                         r = -EINVAL;
715                         amdgpu_bo_unreserve(robj);
716                         break;
717                 }
718                 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) {
719                         r = -EPERM;
720                         amdgpu_bo_unreserve(robj);
721                         break;
722                 }
723                 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM |
724                                                         AMDGPU_GEM_DOMAIN_GTT |
725                                                         AMDGPU_GEM_DOMAIN_CPU);
726                 robj->allowed_domains = robj->preferred_domains;
727                 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
728                         robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
729
730                 if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
731                         amdgpu_vm_bo_invalidate(adev, robj, true);
732
733                 amdgpu_bo_unreserve(robj);
734                 break;
735         default:
736                 amdgpu_bo_unreserve(robj);
737                 r = -EINVAL;
738         }
739
740 out:
741         drm_gem_object_put_unlocked(gobj);
742         return r;
743 }
744
745 int amdgpu_mode_dumb_create(struct drm_file *file_priv,
746                             struct drm_device *dev,
747                             struct drm_mode_create_dumb *args)
748 {
749         struct amdgpu_device *adev = dev->dev_private;
750         struct drm_gem_object *gobj;
751         uint32_t handle;
752         int r;
753
754         args->pitch = amdgpu_align_pitch(adev, args->width,
755                                          DIV_ROUND_UP(args->bpp, 8), 0);
756         args->size = (u64)args->pitch * args->height;
757         args->size = ALIGN(args->size, PAGE_SIZE);
758
759         r = amdgpu_gem_object_create(adev, args->size, 0,
760                                      AMDGPU_GEM_DOMAIN_VRAM,
761                                      AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
762                                      false, NULL, &gobj);
763         if (r)
764                 return -ENOMEM;
765
766         r = drm_gem_handle_create(file_priv, gobj, &handle);
767         /* drop reference from allocate - handle holds it now */
768         drm_gem_object_put_unlocked(gobj);
769         if (r) {
770                 return r;
771         }
772         args->handle = handle;
773         return 0;
774 }
775
776 #if defined(CONFIG_DEBUG_FS)
777
778 #define amdgpu_debugfs_gem_bo_print_flag(m, bo, flag)   \
779         if (bo->flags & (AMDGPU_GEM_CREATE_ ## flag)) { \
780                 seq_printf((m), " " #flag);             \
781         }
782
783 static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data)
784 {
785         struct drm_gem_object *gobj = ptr;
786         struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj);
787         struct seq_file *m = data;
788
789         struct dma_buf_attachment *attachment;
790         struct dma_buf *dma_buf;
791         unsigned domain;
792         const char *placement;
793         unsigned pin_count;
794
795         domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
796         switch (domain) {
797         case AMDGPU_GEM_DOMAIN_VRAM:
798                 placement = "VRAM";
799                 break;
800         case AMDGPU_GEM_DOMAIN_GTT:
801                 placement = " GTT";
802                 break;
803         case AMDGPU_GEM_DOMAIN_CPU:
804         default:
805                 placement = " CPU";
806                 break;
807         }
808         seq_printf(m, "\t0x%08x: %12ld byte %s",
809                    id, amdgpu_bo_size(bo), placement);
810
811         pin_count = READ_ONCE(bo->pin_count);
812         if (pin_count)
813                 seq_printf(m, " pin count %d", pin_count);
814
815         dma_buf = READ_ONCE(bo->gem_base.dma_buf);
816         attachment = READ_ONCE(bo->gem_base.import_attach);
817
818         if (attachment)
819                 seq_printf(m, " imported from %p", dma_buf);
820         else if (dma_buf)
821                 seq_printf(m, " exported as %p", dma_buf);
822
823         amdgpu_debugfs_gem_bo_print_flag(m, bo, CPU_ACCESS_REQUIRED);
824         amdgpu_debugfs_gem_bo_print_flag(m, bo, NO_CPU_ACCESS);
825         amdgpu_debugfs_gem_bo_print_flag(m, bo, CPU_GTT_USWC);
826         amdgpu_debugfs_gem_bo_print_flag(m, bo, VRAM_CLEARED);
827         amdgpu_debugfs_gem_bo_print_flag(m, bo, SHADOW);
828         amdgpu_debugfs_gem_bo_print_flag(m, bo, VRAM_CONTIGUOUS);
829         amdgpu_debugfs_gem_bo_print_flag(m, bo, VM_ALWAYS_VALID);
830         amdgpu_debugfs_gem_bo_print_flag(m, bo, EXPLICIT_SYNC);
831
832         seq_printf(m, "\n");
833
834         return 0;
835 }
836
837 static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data)
838 {
839         struct drm_info_node *node = (struct drm_info_node *)m->private;
840         struct drm_device *dev = node->minor->dev;
841         struct drm_file *file;
842         int r;
843
844         r = mutex_lock_interruptible(&dev->filelist_mutex);
845         if (r)
846                 return r;
847
848         list_for_each_entry(file, &dev->filelist, lhead) {
849                 struct task_struct *task;
850
851                 /*
852                  * Although we have a valid reference on file->pid, that does
853                  * not guarantee that the task_struct who called get_pid() is
854                  * still alive (e.g. get_pid(current) => fork() => exit()).
855                  * Therefore, we need to protect this ->comm access using RCU.
856                  */
857                 rcu_read_lock();
858                 task = pid_task(file->pid, PIDTYPE_PID);
859                 seq_printf(m, "pid %8d command %s:\n", pid_nr(file->pid),
860                            task ? task->comm : "<unknown>");
861                 rcu_read_unlock();
862
863                 spin_lock(&file->table_lock);
864                 idr_for_each(&file->object_idr, amdgpu_debugfs_gem_bo_info, m);
865                 spin_unlock(&file->table_lock);
866         }
867
868         mutex_unlock(&dev->filelist_mutex);
869         return 0;
870 }
871
872 static const struct drm_info_list amdgpu_debugfs_gem_list[] = {
873         {"amdgpu_gem_info", &amdgpu_debugfs_gem_info, 0, NULL},
874 };
875 #endif
876
877 int amdgpu_debugfs_gem_init(struct amdgpu_device *adev)
878 {
879 #if defined(CONFIG_DEBUG_FS)
880         return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_gem_list, 1);
881 #endif
882         return 0;
883 }
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