drm/ttm: allow reserving more than one shared slot v3
[linux-2.6-microblaze.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 #include "amdgpu_display.h"
34
35 void amdgpu_gem_object_free(struct drm_gem_object *gobj)
36 {
37         struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj);
38
39         if (robj) {
40                 amdgpu_mn_unregister(robj);
41                 amdgpu_bo_unref(&robj);
42         }
43 }
44
45 int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
46                              int alignment, u32 initial_domain,
47                              u64 flags, enum ttm_bo_type type,
48                              struct reservation_object *resv,
49                              struct drm_gem_object **obj)
50 {
51         struct amdgpu_bo *bo;
52         struct amdgpu_bo_param bp;
53         int r;
54
55         memset(&bp, 0, sizeof(bp));
56         *obj = NULL;
57         /* At least align on page size */
58         if (alignment < PAGE_SIZE) {
59                 alignment = PAGE_SIZE;
60         }
61
62         bp.size = size;
63         bp.byte_align = alignment;
64         bp.type = type;
65         bp.resv = resv;
66         bp.preferred_domain = initial_domain;
67 retry:
68         bp.flags = flags;
69         bp.domain = initial_domain;
70         r = amdgpu_bo_create(adev, &bp, &bo);
71         if (r) {
72                 if (r != -ERESTARTSYS) {
73                         if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
74                                 flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
75                                 goto retry;
76                         }
77
78                         if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
79                                 initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
80                                 goto retry;
81                         }
82                         DRM_DEBUG("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
83                                   size, initial_domain, alignment, r);
84                 }
85                 return r;
86         }
87         *obj = &bo->gem_base;
88
89         return 0;
90 }
91
92 void amdgpu_gem_force_release(struct amdgpu_device *adev)
93 {
94         struct drm_device *ddev = adev->ddev;
95         struct drm_file *file;
96
97         mutex_lock(&ddev->filelist_mutex);
98
99         list_for_each_entry(file, &ddev->filelist, lhead) {
100                 struct drm_gem_object *gobj;
101                 int handle;
102
103                 WARN_ONCE(1, "Still active user space clients!\n");
104                 spin_lock(&file->table_lock);
105                 idr_for_each_entry(&file->object_idr, gobj, handle) {
106                         WARN_ONCE(1, "And also active allocations!\n");
107                         drm_gem_object_put_unlocked(gobj);
108                 }
109                 idr_destroy(&file->object_idr);
110                 spin_unlock(&file->table_lock);
111         }
112
113         mutex_unlock(&ddev->filelist_mutex);
114 }
115
116 /*
117  * Call from drm_gem_handle_create which appear in both new and open ioctl
118  * case.
119  */
120 int amdgpu_gem_object_open(struct drm_gem_object *obj,
121                            struct drm_file *file_priv)
122 {
123         struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj);
124         struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
125         struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
126         struct amdgpu_vm *vm = &fpriv->vm;
127         struct amdgpu_bo_va *bo_va;
128         struct mm_struct *mm;
129         int r;
130
131         mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm);
132         if (mm && mm != current->mm)
133                 return -EPERM;
134
135         if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID &&
136             abo->tbo.resv != vm->root.base.bo->tbo.resv)
137                 return -EPERM;
138
139         r = amdgpu_bo_reserve(abo, false);
140         if (r)
141                 return r;
142
143         bo_va = amdgpu_vm_bo_find(vm, abo);
144         if (!bo_va) {
145                 bo_va = amdgpu_vm_bo_add(adev, vm, abo);
146         } else {
147                 ++bo_va->ref_count;
148         }
149         amdgpu_bo_unreserve(abo);
150         return 0;
151 }
152
153 void amdgpu_gem_object_close(struct drm_gem_object *obj,
154                              struct drm_file *file_priv)
155 {
156         struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
157         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
158         struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
159         struct amdgpu_vm *vm = &fpriv->vm;
160
161         struct amdgpu_bo_list_entry vm_pd;
162         struct list_head list, duplicates;
163         struct ttm_validate_buffer tv;
164         struct ww_acquire_ctx ticket;
165         struct amdgpu_bo_va *bo_va;
166         int r;
167
168         INIT_LIST_HEAD(&list);
169         INIT_LIST_HEAD(&duplicates);
170
171         tv.bo = &bo->tbo;
172         tv.num_shared = 1;
173         list_add(&tv.head, &list);
174
175         amdgpu_vm_get_pd_bo(vm, &list, &vm_pd);
176
177         r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates);
178         if (r) {
179                 dev_err(adev->dev, "leaking bo va because "
180                         "we fail to reserve bo (%d)\n", r);
181                 return;
182         }
183         bo_va = amdgpu_vm_bo_find(vm, bo);
184         if (bo_va && --bo_va->ref_count == 0) {
185                 amdgpu_vm_bo_rmv(adev, bo_va);
186
187                 if (amdgpu_vm_ready(vm)) {
188                         struct dma_fence *fence = NULL;
189
190                         r = amdgpu_vm_clear_freed(adev, vm, &fence);
191                         if (unlikely(r)) {
192                                 dev_err(adev->dev, "failed to clear page "
193                                         "tables on GEM object close (%d)\n", r);
194                         }
195
196                         if (fence) {
197                                 amdgpu_bo_fence(bo, fence, true);
198                                 dma_fence_put(fence);
199                         }
200                 }
201         }
202         ttm_eu_backoff_reservation(&ticket, &list);
203 }
204
205 /*
206  * GEM ioctls.
207  */
208 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
209                             struct drm_file *filp)
210 {
211         struct amdgpu_device *adev = dev->dev_private;
212         struct amdgpu_fpriv *fpriv = filp->driver_priv;
213         struct amdgpu_vm *vm = &fpriv->vm;
214         union drm_amdgpu_gem_create *args = data;
215         uint64_t flags = args->in.domain_flags;
216         uint64_t size = args->in.bo_size;
217         struct reservation_object *resv = NULL;
218         struct drm_gem_object *gobj;
219         uint32_t handle;
220         int r;
221
222         /* reject invalid gem flags */
223         if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
224                       AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
225                       AMDGPU_GEM_CREATE_CPU_GTT_USWC |
226                       AMDGPU_GEM_CREATE_VRAM_CLEARED |
227                       AMDGPU_GEM_CREATE_VM_ALWAYS_VALID |
228                       AMDGPU_GEM_CREATE_EXPLICIT_SYNC))
229
230                 return -EINVAL;
231
232         /* reject invalid gem domains */
233         if (args->in.domains & ~AMDGPU_GEM_DOMAIN_MASK)
234                 return -EINVAL;
235
236         /* create a gem object to contain this object in */
237         if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
238             AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
239                 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
240                         /* if gds bo is created from user space, it must be
241                          * passed to bo list
242                          */
243                         DRM_ERROR("GDS bo cannot be per-vm-bo\n");
244                         return -EINVAL;
245                 }
246                 flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
247                 /* GDS allocations must be DW aligned */
248                 if (args->in.domains & AMDGPU_GEM_DOMAIN_GDS)
249                         size = ALIGN(size, 4);
250         }
251
252         if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
253                 r = amdgpu_bo_reserve(vm->root.base.bo, false);
254                 if (r)
255                         return r;
256
257                 resv = vm->root.base.bo->tbo.resv;
258         }
259
260         r = amdgpu_gem_object_create(adev, size, args->in.alignment,
261                                      (u32)(0xffffffff & args->in.domains),
262                                      flags, ttm_bo_type_device, resv, &gobj);
263         if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
264                 if (!r) {
265                         struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj);
266
267                         abo->parent = amdgpu_bo_ref(vm->root.base.bo);
268                 }
269                 amdgpu_bo_unreserve(vm->root.base.bo);
270         }
271         if (r)
272                 return r;
273
274         r = drm_gem_handle_create(filp, gobj, &handle);
275         /* drop reference from allocate - handle holds it now */
276         drm_gem_object_put_unlocked(gobj);
277         if (r)
278                 return r;
279
280         memset(args, 0, sizeof(*args));
281         args->out.handle = handle;
282         return 0;
283 }
284
285 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
286                              struct drm_file *filp)
287 {
288         struct ttm_operation_ctx ctx = { true, false };
289         struct amdgpu_device *adev = dev->dev_private;
290         struct drm_amdgpu_gem_userptr *args = data;
291         struct drm_gem_object *gobj;
292         struct amdgpu_bo *bo;
293         uint32_t handle;
294         int r;
295
296         if (offset_in_page(args->addr | args->size))
297                 return -EINVAL;
298
299         /* reject unknown flag values */
300         if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
301             AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
302             AMDGPU_GEM_USERPTR_REGISTER))
303                 return -EINVAL;
304
305         if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
306              !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
307
308                 /* if we want to write to it we must install a MMU notifier */
309                 return -EACCES;
310         }
311
312         /* create a gem object to contain this object in */
313         r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU,
314                                      0, ttm_bo_type_device, NULL, &gobj);
315         if (r)
316                 return r;
317
318         bo = gem_to_amdgpu_bo(gobj);
319         bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT;
320         bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
321         r = amdgpu_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags);
322         if (r)
323                 goto release_object;
324
325         if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) {
326                 r = amdgpu_mn_register(bo, args->addr);
327                 if (r)
328                         goto release_object;
329         }
330
331         if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
332                 r = amdgpu_ttm_tt_get_user_pages(bo->tbo.ttm,
333                                                  bo->tbo.ttm->pages);
334                 if (r)
335                         goto release_object;
336
337                 r = amdgpu_bo_reserve(bo, true);
338                 if (r)
339                         goto free_pages;
340
341                 amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
342                 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
343                 amdgpu_bo_unreserve(bo);
344                 if (r)
345                         goto free_pages;
346         }
347
348         r = drm_gem_handle_create(filp, gobj, &handle);
349         /* drop reference from allocate - handle holds it now */
350         drm_gem_object_put_unlocked(gobj);
351         if (r)
352                 return r;
353
354         args->handle = handle;
355         return 0;
356
357 free_pages:
358         release_pages(bo->tbo.ttm->pages, bo->tbo.ttm->num_pages);
359
360 release_object:
361         drm_gem_object_put_unlocked(gobj);
362
363         return r;
364 }
365
366 int amdgpu_mode_dumb_mmap(struct drm_file *filp,
367                           struct drm_device *dev,
368                           uint32_t handle, uint64_t *offset_p)
369 {
370         struct drm_gem_object *gobj;
371         struct amdgpu_bo *robj;
372
373         gobj = drm_gem_object_lookup(filp, handle);
374         if (gobj == NULL) {
375                 return -ENOENT;
376         }
377         robj = gem_to_amdgpu_bo(gobj);
378         if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) ||
379             (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) {
380                 drm_gem_object_put_unlocked(gobj);
381                 return -EPERM;
382         }
383         *offset_p = amdgpu_bo_mmap_offset(robj);
384         drm_gem_object_put_unlocked(gobj);
385         return 0;
386 }
387
388 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data,
389                           struct drm_file *filp)
390 {
391         union drm_amdgpu_gem_mmap *args = data;
392         uint32_t handle = args->in.handle;
393         memset(args, 0, sizeof(*args));
394         return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);
395 }
396
397 /**
398  * amdgpu_gem_timeout - calculate jiffies timeout from absolute value
399  *
400  * @timeout_ns: timeout in ns
401  *
402  * Calculate the timeout in jiffies from an absolute timeout in ns.
403  */
404 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns)
405 {
406         unsigned long timeout_jiffies;
407         ktime_t timeout;
408
409         /* clamp timeout if it's to large */
410         if (((int64_t)timeout_ns) < 0)
411                 return MAX_SCHEDULE_TIMEOUT;
412
413         timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get());
414         if (ktime_to_ns(timeout) < 0)
415                 return 0;
416
417         timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout));
418         /*  clamp timeout to avoid unsigned-> signed overflow */
419         if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT )
420                 return MAX_SCHEDULE_TIMEOUT - 1;
421
422         return timeout_jiffies;
423 }
424
425 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
426                               struct drm_file *filp)
427 {
428         union drm_amdgpu_gem_wait_idle *args = data;
429         struct drm_gem_object *gobj;
430         struct amdgpu_bo *robj;
431         uint32_t handle = args->in.handle;
432         unsigned long timeout = amdgpu_gem_timeout(args->in.timeout);
433         int r = 0;
434         long ret;
435
436         gobj = drm_gem_object_lookup(filp, handle);
437         if (gobj == NULL) {
438                 return -ENOENT;
439         }
440         robj = gem_to_amdgpu_bo(gobj);
441         ret = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true,
442                                                   timeout);
443
444         /* ret == 0 means not signaled,
445          * ret > 0 means signaled
446          * ret < 0 means interrupted before timeout
447          */
448         if (ret >= 0) {
449                 memset(args, 0, sizeof(*args));
450                 args->out.status = (ret == 0);
451         } else
452                 r = ret;
453
454         drm_gem_object_put_unlocked(gobj);
455         return r;
456 }
457
458 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
459                                 struct drm_file *filp)
460 {
461         struct drm_amdgpu_gem_metadata *args = data;
462         struct drm_gem_object *gobj;
463         struct amdgpu_bo *robj;
464         int r = -1;
465
466         DRM_DEBUG("%d \n", args->handle);
467         gobj = drm_gem_object_lookup(filp, args->handle);
468         if (gobj == NULL)
469                 return -ENOENT;
470         robj = gem_to_amdgpu_bo(gobj);
471
472         r = amdgpu_bo_reserve(robj, false);
473         if (unlikely(r != 0))
474                 goto out;
475
476         if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) {
477                 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info);
478                 r = amdgpu_bo_get_metadata(robj, args->data.data,
479                                            sizeof(args->data.data),
480                                            &args->data.data_size_bytes,
481                                            &args->data.flags);
482         } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) {
483                 if (args->data.data_size_bytes > sizeof(args->data.data)) {
484                         r = -EINVAL;
485                         goto unreserve;
486                 }
487                 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info);
488                 if (!r)
489                         r = amdgpu_bo_set_metadata(robj, args->data.data,
490                                                    args->data.data_size_bytes,
491                                                    args->data.flags);
492         }
493
494 unreserve:
495         amdgpu_bo_unreserve(robj);
496 out:
497         drm_gem_object_put_unlocked(gobj);
498         return r;
499 }
500
501 /**
502  * amdgpu_gem_va_update_vm -update the bo_va in its VM
503  *
504  * @adev: amdgpu_device pointer
505  * @vm: vm to update
506  * @bo_va: bo_va to update
507  * @operation: map, unmap or clear
508  *
509  * Update the bo_va directly after setting its address. Errors are not
510  * vital here, so they are not reported back to userspace.
511  */
512 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
513                                     struct amdgpu_vm *vm,
514                                     struct amdgpu_bo_va *bo_va,
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_GMC_HOLE_START &&
570             args->va_address < AMDGPU_GMC_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_GMC_HOLE_START,
574                         AMDGPU_GMC_HOLE_END);
575                 return -EINVAL;
576         }
577
578         args->va_address &= AMDGPU_GMC_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                 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
608                         tv.num_shared = 1;
609                 else
610                         tv.num_shared = 0;
611                 list_add(&tv.head, &list);
612         } else {
613                 gobj = NULL;
614                 abo = NULL;
615         }
616
617         amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd);
618
619         r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
620         if (r)
621                 goto error_unref;
622
623         if (abo) {
624                 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo);
625                 if (!bo_va) {
626                         r = -ENOENT;
627                         goto error_backoff;
628                 }
629         } else if (args->operation != AMDGPU_VA_OP_CLEAR) {
630                 bo_va = fpriv->prt_va;
631         } else {
632                 bo_va = NULL;
633         }
634
635         switch (args->operation) {
636         case AMDGPU_VA_OP_MAP:
637                 r = amdgpu_vm_alloc_pts(adev, bo_va->base.vm, args->va_address,
638                                         args->map_size);
639                 if (r)
640                         goto error_backoff;
641
642                 va_flags = amdgpu_gmc_get_pte_flags(adev, args->flags);
643                 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
644                                      args->offset_in_bo, args->map_size,
645                                      va_flags);
646                 break;
647         case AMDGPU_VA_OP_UNMAP:
648                 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
649                 break;
650
651         case AMDGPU_VA_OP_CLEAR:
652                 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm,
653                                                 args->va_address,
654                                                 args->map_size);
655                 break;
656         case AMDGPU_VA_OP_REPLACE:
657                 r = amdgpu_vm_alloc_pts(adev, bo_va->base.vm, args->va_address,
658                                         args->map_size);
659                 if (r)
660                         goto error_backoff;
661
662                 va_flags = amdgpu_gmc_get_pte_flags(adev, args->flags);
663                 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address,
664                                              args->offset_in_bo, args->map_size,
665                                              va_flags);
666                 break;
667         default:
668                 break;
669         }
670         if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !amdgpu_vm_debug)
671                 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va,
672                                         args->operation);
673
674 error_backoff:
675         ttm_eu_backoff_reservation(&ticket, &list);
676
677 error_unref:
678         drm_gem_object_put_unlocked(gobj);
679         return r;
680 }
681
682 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
683                         struct drm_file *filp)
684 {
685         struct amdgpu_device *adev = dev->dev_private;
686         struct drm_amdgpu_gem_op *args = data;
687         struct drm_gem_object *gobj;
688         struct amdgpu_bo *robj;
689         int r;
690
691         gobj = drm_gem_object_lookup(filp, args->handle);
692         if (gobj == NULL) {
693                 return -ENOENT;
694         }
695         robj = gem_to_amdgpu_bo(gobj);
696
697         r = amdgpu_bo_reserve(robj, false);
698         if (unlikely(r))
699                 goto out;
700
701         switch (args->op) {
702         case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: {
703                 struct drm_amdgpu_gem_create_in info;
704                 void __user *out = u64_to_user_ptr(args->value);
705
706                 info.bo_size = robj->gem_base.size;
707                 info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT;
708                 info.domains = robj->preferred_domains;
709                 info.domain_flags = robj->flags;
710                 amdgpu_bo_unreserve(robj);
711                 if (copy_to_user(out, &info, sizeof(info)))
712                         r = -EFAULT;
713                 break;
714         }
715         case AMDGPU_GEM_OP_SET_PLACEMENT:
716                 if (robj->prime_shared_count && (args->value & AMDGPU_GEM_DOMAIN_VRAM)) {
717                         r = -EINVAL;
718                         amdgpu_bo_unreserve(robj);
719                         break;
720                 }
721                 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) {
722                         r = -EPERM;
723                         amdgpu_bo_unreserve(robj);
724                         break;
725                 }
726                 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM |
727                                                         AMDGPU_GEM_DOMAIN_GTT |
728                                                         AMDGPU_GEM_DOMAIN_CPU);
729                 robj->allowed_domains = robj->preferred_domains;
730                 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
731                         robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
732
733                 if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
734                         amdgpu_vm_bo_invalidate(adev, robj, true);
735
736                 amdgpu_bo_unreserve(robj);
737                 break;
738         default:
739                 amdgpu_bo_unreserve(robj);
740                 r = -EINVAL;
741         }
742
743 out:
744         drm_gem_object_put_unlocked(gobj);
745         return r;
746 }
747
748 int amdgpu_mode_dumb_create(struct drm_file *file_priv,
749                             struct drm_device *dev,
750                             struct drm_mode_create_dumb *args)
751 {
752         struct amdgpu_device *adev = dev->dev_private;
753         struct drm_gem_object *gobj;
754         uint32_t handle;
755         u32 domain;
756         int r;
757
758         args->pitch = amdgpu_align_pitch(adev, args->width,
759                                          DIV_ROUND_UP(args->bpp, 8), 0);
760         args->size = (u64)args->pitch * args->height;
761         args->size = ALIGN(args->size, PAGE_SIZE);
762         domain = amdgpu_bo_get_preferred_pin_domain(adev,
763                                 amdgpu_display_supported_domains(adev));
764         r = amdgpu_gem_object_create(adev, args->size, 0, domain,
765                                      AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
766                                      ttm_bo_type_device, NULL, &gobj);
767         if (r)
768                 return -ENOMEM;
769
770         r = drm_gem_handle_create(file_priv, gobj, &handle);
771         /* drop reference from allocate - handle holds it now */
772         drm_gem_object_put_unlocked(gobj);
773         if (r) {
774                 return r;
775         }
776         args->handle = handle;
777         return 0;
778 }
779
780 #if defined(CONFIG_DEBUG_FS)
781
782 #define amdgpu_debugfs_gem_bo_print_flag(m, bo, flag)   \
783         if (bo->flags & (AMDGPU_GEM_CREATE_ ## flag)) { \
784                 seq_printf((m), " " #flag);             \
785         }
786
787 static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data)
788 {
789         struct drm_gem_object *gobj = ptr;
790         struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj);
791         struct seq_file *m = data;
792
793         struct dma_buf_attachment *attachment;
794         struct dma_buf *dma_buf;
795         unsigned domain;
796         const char *placement;
797         unsigned pin_count;
798
799         domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
800         switch (domain) {
801         case AMDGPU_GEM_DOMAIN_VRAM:
802                 placement = "VRAM";
803                 break;
804         case AMDGPU_GEM_DOMAIN_GTT:
805                 placement = " GTT";
806                 break;
807         case AMDGPU_GEM_DOMAIN_CPU:
808         default:
809                 placement = " CPU";
810                 break;
811         }
812         seq_printf(m, "\t0x%08x: %12ld byte %s",
813                    id, amdgpu_bo_size(bo), placement);
814
815         pin_count = READ_ONCE(bo->pin_count);
816         if (pin_count)
817                 seq_printf(m, " pin count %d", pin_count);
818
819         dma_buf = READ_ONCE(bo->gem_base.dma_buf);
820         attachment = READ_ONCE(bo->gem_base.import_attach);
821
822         if (attachment)
823                 seq_printf(m, " imported from %p", dma_buf);
824         else if (dma_buf)
825                 seq_printf(m, " exported as %p", dma_buf);
826
827         amdgpu_debugfs_gem_bo_print_flag(m, bo, CPU_ACCESS_REQUIRED);
828         amdgpu_debugfs_gem_bo_print_flag(m, bo, NO_CPU_ACCESS);
829         amdgpu_debugfs_gem_bo_print_flag(m, bo, CPU_GTT_USWC);
830         amdgpu_debugfs_gem_bo_print_flag(m, bo, VRAM_CLEARED);
831         amdgpu_debugfs_gem_bo_print_flag(m, bo, SHADOW);
832         amdgpu_debugfs_gem_bo_print_flag(m, bo, VRAM_CONTIGUOUS);
833         amdgpu_debugfs_gem_bo_print_flag(m, bo, VM_ALWAYS_VALID);
834         amdgpu_debugfs_gem_bo_print_flag(m, bo, EXPLICIT_SYNC);
835
836         seq_printf(m, "\n");
837
838         return 0;
839 }
840
841 static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data)
842 {
843         struct drm_info_node *node = (struct drm_info_node *)m->private;
844         struct drm_device *dev = node->minor->dev;
845         struct drm_file *file;
846         int r;
847
848         r = mutex_lock_interruptible(&dev->filelist_mutex);
849         if (r)
850                 return r;
851
852         list_for_each_entry(file, &dev->filelist, lhead) {
853                 struct task_struct *task;
854
855                 /*
856                  * Although we have a valid reference on file->pid, that does
857                  * not guarantee that the task_struct who called get_pid() is
858                  * still alive (e.g. get_pid(current) => fork() => exit()).
859                  * Therefore, we need to protect this ->comm access using RCU.
860                  */
861                 rcu_read_lock();
862                 task = pid_task(file->pid, PIDTYPE_PID);
863                 seq_printf(m, "pid %8d command %s:\n", pid_nr(file->pid),
864                            task ? task->comm : "<unknown>");
865                 rcu_read_unlock();
866
867                 spin_lock(&file->table_lock);
868                 idr_for_each(&file->object_idr, amdgpu_debugfs_gem_bo_info, m);
869                 spin_unlock(&file->table_lock);
870         }
871
872         mutex_unlock(&dev->filelist_mutex);
873         return 0;
874 }
875
876 static const struct drm_info_list amdgpu_debugfs_gem_list[] = {
877         {"amdgpu_gem_info", &amdgpu_debugfs_gem_info, 0, NULL},
878 };
879 #endif
880
881 int amdgpu_debugfs_gem_init(struct amdgpu_device *adev)
882 {
883 #if defined(CONFIG_DEBUG_FS)
884         return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_gem_list, 1);
885 #endif
886         return 0;
887 }