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[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 #include "amdgpu_display.h"
34 #include "amdgpu_xgmi.h"
35
36 void amdgpu_gem_object_free(struct drm_gem_object *gobj)
37 {
38         struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj);
39
40         if (robj) {
41                 amdgpu_mn_unregister(robj);
42                 amdgpu_bo_unref(&robj);
43         }
44 }
45
46 int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
47                              int alignment, u32 initial_domain,
48                              u64 flags, enum ttm_bo_type type,
49                              struct reservation_object *resv,
50                              struct drm_gem_object **obj)
51 {
52         struct amdgpu_bo *bo;
53         struct amdgpu_bo_param bp;
54         int r;
55
56         memset(&bp, 0, sizeof(bp));
57         *obj = NULL;
58
59         bp.size = size;
60         bp.byte_align = alignment;
61         bp.type = type;
62         bp.resv = resv;
63         bp.preferred_domain = initial_domain;
64 retry:
65         bp.flags = flags;
66         bp.domain = initial_domain;
67         r = amdgpu_bo_create(adev, &bp, &bo);
68         if (r) {
69                 if (r != -ERESTARTSYS) {
70                         if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
71                                 flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
72                                 goto retry;
73                         }
74
75                         if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
76                                 initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
77                                 goto retry;
78                         }
79                         DRM_DEBUG("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
80                                   size, initial_domain, alignment, r);
81                 }
82                 return r;
83         }
84         *obj = &bo->gem_base;
85
86         return 0;
87 }
88
89 void amdgpu_gem_force_release(struct amdgpu_device *adev)
90 {
91         struct drm_device *ddev = adev->ddev;
92         struct drm_file *file;
93
94         mutex_lock(&ddev->filelist_mutex);
95
96         list_for_each_entry(file, &ddev->filelist, lhead) {
97                 struct drm_gem_object *gobj;
98                 int handle;
99
100                 WARN_ONCE(1, "Still active user space clients!\n");
101                 spin_lock(&file->table_lock);
102                 idr_for_each_entry(&file->object_idr, gobj, handle) {
103                         WARN_ONCE(1, "And also active allocations!\n");
104                         drm_gem_object_put_unlocked(gobj);
105                 }
106                 idr_destroy(&file->object_idr);
107                 spin_unlock(&file->table_lock);
108         }
109
110         mutex_unlock(&ddev->filelist_mutex);
111 }
112
113 /*
114  * Call from drm_gem_handle_create which appear in both new and open ioctl
115  * case.
116  */
117 int amdgpu_gem_object_open(struct drm_gem_object *obj,
118                            struct drm_file *file_priv)
119 {
120         struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj);
121         struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
122         struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
123         struct amdgpu_vm *vm = &fpriv->vm;
124         struct amdgpu_bo_va *bo_va;
125         struct mm_struct *mm;
126         int r;
127
128         mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm);
129         if (mm && mm != current->mm)
130                 return -EPERM;
131
132         if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID &&
133             abo->tbo.resv != vm->root.base.bo->tbo.resv)
134                 return -EPERM;
135
136         r = amdgpu_bo_reserve(abo, false);
137         if (r)
138                 return r;
139
140         bo_va = amdgpu_vm_bo_find(vm, abo);
141         if (!bo_va) {
142                 bo_va = amdgpu_vm_bo_add(adev, vm, abo);
143         } else {
144                 ++bo_va->ref_count;
145         }
146         amdgpu_bo_unreserve(abo);
147         return 0;
148 }
149
150 void amdgpu_gem_object_close(struct drm_gem_object *obj,
151                              struct drm_file *file_priv)
152 {
153         struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
154         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
155         struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
156         struct amdgpu_vm *vm = &fpriv->vm;
157
158         struct amdgpu_bo_list_entry vm_pd;
159         struct list_head list, duplicates;
160         struct ttm_validate_buffer tv;
161         struct ww_acquire_ctx ticket;
162         struct amdgpu_bo_va *bo_va;
163         int r;
164
165         INIT_LIST_HEAD(&list);
166         INIT_LIST_HEAD(&duplicates);
167
168         tv.bo = &bo->tbo;
169         tv.num_shared = 1;
170         list_add(&tv.head, &list);
171
172         amdgpu_vm_get_pd_bo(vm, &list, &vm_pd);
173
174         r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates, true);
175         if (r) {
176                 dev_err(adev->dev, "leaking bo va because "
177                         "we fail to reserve bo (%d)\n", r);
178                 return;
179         }
180         bo_va = amdgpu_vm_bo_find(vm, bo);
181         if (bo_va && --bo_va->ref_count == 0) {
182                 amdgpu_vm_bo_rmv(adev, bo_va);
183
184                 if (amdgpu_vm_ready(vm)) {
185                         struct dma_fence *fence = NULL;
186
187                         r = amdgpu_vm_clear_freed(adev, vm, &fence);
188                         if (unlikely(r)) {
189                                 dev_err(adev->dev, "failed to clear page "
190                                         "tables on GEM object close (%d)\n", r);
191                         }
192
193                         if (fence) {
194                                 amdgpu_bo_fence(bo, fence, true);
195                                 dma_fence_put(fence);
196                         }
197                 }
198         }
199         ttm_eu_backoff_reservation(&ticket, &list);
200 }
201
202 /*
203  * GEM ioctls.
204  */
205 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
206                             struct drm_file *filp)
207 {
208         struct amdgpu_device *adev = dev->dev_private;
209         struct amdgpu_fpriv *fpriv = filp->driver_priv;
210         struct amdgpu_vm *vm = &fpriv->vm;
211         union drm_amdgpu_gem_create *args = data;
212         uint64_t flags = args->in.domain_flags;
213         uint64_t size = args->in.bo_size;
214         struct reservation_object *resv = NULL;
215         struct drm_gem_object *gobj;
216         uint32_t handle;
217         int r;
218
219         /* reject invalid gem flags */
220         if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
221                       AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
222                       AMDGPU_GEM_CREATE_CPU_GTT_USWC |
223                       AMDGPU_GEM_CREATE_VRAM_CLEARED |
224                       AMDGPU_GEM_CREATE_VM_ALWAYS_VALID |
225                       AMDGPU_GEM_CREATE_EXPLICIT_SYNC))
226
227                 return -EINVAL;
228
229         /* reject invalid gem domains */
230         if (args->in.domains & ~AMDGPU_GEM_DOMAIN_MASK)
231                 return -EINVAL;
232
233         /* create a gem object to contain this object in */
234         if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
235             AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
236                 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
237                         /* if gds bo is created from user space, it must be
238                          * passed to bo list
239                          */
240                         DRM_ERROR("GDS bo cannot be per-vm-bo\n");
241                         return -EINVAL;
242                 }
243                 flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
244         }
245
246         if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
247                 r = amdgpu_bo_reserve(vm->root.base.bo, false);
248                 if (r)
249                         return r;
250
251                 resv = vm->root.base.bo->tbo.resv;
252         }
253
254         r = amdgpu_gem_object_create(adev, size, args->in.alignment,
255                                      (u32)(0xffffffff & args->in.domains),
256                                      flags, ttm_bo_type_device, resv, &gobj);
257         if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
258                 if (!r) {
259                         struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj);
260
261                         abo->parent = amdgpu_bo_ref(vm->root.base.bo);
262                 }
263                 amdgpu_bo_unreserve(vm->root.base.bo);
264         }
265         if (r)
266                 return r;
267
268         r = drm_gem_handle_create(filp, gobj, &handle);
269         /* drop reference from allocate - handle holds it now */
270         drm_gem_object_put_unlocked(gobj);
271         if (r)
272                 return r;
273
274         memset(args, 0, sizeof(*args));
275         args->out.handle = handle;
276         return 0;
277 }
278
279 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
280                              struct drm_file *filp)
281 {
282         struct ttm_operation_ctx ctx = { true, false };
283         struct amdgpu_device *adev = dev->dev_private;
284         struct drm_amdgpu_gem_userptr *args = data;
285         struct drm_gem_object *gobj;
286         struct amdgpu_bo *bo;
287         uint32_t handle;
288         int r;
289
290         if (offset_in_page(args->addr | args->size))
291                 return -EINVAL;
292
293         /* reject unknown flag values */
294         if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
295             AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
296             AMDGPU_GEM_USERPTR_REGISTER))
297                 return -EINVAL;
298
299         if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
300              !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
301
302                 /* if we want to write to it we must install a MMU notifier */
303                 return -EACCES;
304         }
305
306         /* create a gem object to contain this object in */
307         r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU,
308                                      0, ttm_bo_type_device, NULL, &gobj);
309         if (r)
310                 return r;
311
312         bo = gem_to_amdgpu_bo(gobj);
313         bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT;
314         bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
315         r = amdgpu_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags);
316         if (r)
317                 goto release_object;
318
319         if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) {
320                 r = amdgpu_mn_register(bo, args->addr);
321                 if (r)
322                         goto release_object;
323         }
324
325         if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
326                 r = amdgpu_ttm_tt_get_user_pages(bo->tbo.ttm,
327                                                  bo->tbo.ttm->pages);
328                 if (r)
329                         goto release_object;
330
331                 r = amdgpu_bo_reserve(bo, true);
332                 if (r)
333                         goto user_pages_done;
334
335                 amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
336                 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
337                 amdgpu_bo_unreserve(bo);
338                 if (r)
339                         goto user_pages_done;
340         }
341
342         r = drm_gem_handle_create(filp, gobj, &handle);
343         if (r)
344                 goto user_pages_done;
345
346         args->handle = handle;
347
348 user_pages_done:
349         if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE)
350                 amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm);
351
352 release_object:
353         drm_gem_object_put_unlocked(gobj);
354
355         return r;
356 }
357
358 int amdgpu_mode_dumb_mmap(struct drm_file *filp,
359                           struct drm_device *dev,
360                           uint32_t handle, uint64_t *offset_p)
361 {
362         struct drm_gem_object *gobj;
363         struct amdgpu_bo *robj;
364
365         gobj = drm_gem_object_lookup(filp, handle);
366         if (gobj == NULL) {
367                 return -ENOENT;
368         }
369         robj = gem_to_amdgpu_bo(gobj);
370         if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) ||
371             (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) {
372                 drm_gem_object_put_unlocked(gobj);
373                 return -EPERM;
374         }
375         *offset_p = amdgpu_bo_mmap_offset(robj);
376         drm_gem_object_put_unlocked(gobj);
377         return 0;
378 }
379
380 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data,
381                           struct drm_file *filp)
382 {
383         union drm_amdgpu_gem_mmap *args = data;
384         uint32_t handle = args->in.handle;
385         memset(args, 0, sizeof(*args));
386         return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);
387 }
388
389 /**
390  * amdgpu_gem_timeout - calculate jiffies timeout from absolute value
391  *
392  * @timeout_ns: timeout in ns
393  *
394  * Calculate the timeout in jiffies from an absolute timeout in ns.
395  */
396 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns)
397 {
398         unsigned long timeout_jiffies;
399         ktime_t timeout;
400
401         /* clamp timeout if it's to large */
402         if (((int64_t)timeout_ns) < 0)
403                 return MAX_SCHEDULE_TIMEOUT;
404
405         timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get());
406         if (ktime_to_ns(timeout) < 0)
407                 return 0;
408
409         timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout));
410         /*  clamp timeout to avoid unsigned-> signed overflow */
411         if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT )
412                 return MAX_SCHEDULE_TIMEOUT - 1;
413
414         return timeout_jiffies;
415 }
416
417 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
418                               struct drm_file *filp)
419 {
420         union drm_amdgpu_gem_wait_idle *args = data;
421         struct drm_gem_object *gobj;
422         struct amdgpu_bo *robj;
423         uint32_t handle = args->in.handle;
424         unsigned long timeout = amdgpu_gem_timeout(args->in.timeout);
425         int r = 0;
426         long ret;
427
428         gobj = drm_gem_object_lookup(filp, handle);
429         if (gobj == NULL) {
430                 return -ENOENT;
431         }
432         robj = gem_to_amdgpu_bo(gobj);
433         ret = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true,
434                                                   timeout);
435
436         /* ret == 0 means not signaled,
437          * ret > 0 means signaled
438          * ret < 0 means interrupted before timeout
439          */
440         if (ret >= 0) {
441                 memset(args, 0, sizeof(*args));
442                 args->out.status = (ret == 0);
443         } else
444                 r = ret;
445
446         drm_gem_object_put_unlocked(gobj);
447         return r;
448 }
449
450 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
451                                 struct drm_file *filp)
452 {
453         struct drm_amdgpu_gem_metadata *args = data;
454         struct drm_gem_object *gobj;
455         struct amdgpu_bo *robj;
456         int r = -1;
457
458         DRM_DEBUG("%d \n", args->handle);
459         gobj = drm_gem_object_lookup(filp, args->handle);
460         if (gobj == NULL)
461                 return -ENOENT;
462         robj = gem_to_amdgpu_bo(gobj);
463
464         r = amdgpu_bo_reserve(robj, false);
465         if (unlikely(r != 0))
466                 goto out;
467
468         if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) {
469                 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info);
470                 r = amdgpu_bo_get_metadata(robj, args->data.data,
471                                            sizeof(args->data.data),
472                                            &args->data.data_size_bytes,
473                                            &args->data.flags);
474         } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) {
475                 if (args->data.data_size_bytes > sizeof(args->data.data)) {
476                         r = -EINVAL;
477                         goto unreserve;
478                 }
479                 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info);
480                 if (!r)
481                         r = amdgpu_bo_set_metadata(robj, args->data.data,
482                                                    args->data.data_size_bytes,
483                                                    args->data.flags);
484         }
485
486 unreserve:
487         amdgpu_bo_unreserve(robj);
488 out:
489         drm_gem_object_put_unlocked(gobj);
490         return r;
491 }
492
493 /**
494  * amdgpu_gem_va_update_vm -update the bo_va in its VM
495  *
496  * @adev: amdgpu_device pointer
497  * @vm: vm to update
498  * @bo_va: bo_va to update
499  * @operation: map, unmap or clear
500  *
501  * Update the bo_va directly after setting its address. Errors are not
502  * vital here, so they are not reported back to userspace.
503  */
504 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
505                                     struct amdgpu_vm *vm,
506                                     struct amdgpu_bo_va *bo_va,
507                                     uint32_t operation)
508 {
509         int r;
510
511         if (!amdgpu_vm_ready(vm))
512                 return;
513
514         r = amdgpu_vm_clear_freed(adev, vm, NULL);
515         if (r)
516                 goto error;
517
518         if (operation == AMDGPU_VA_OP_MAP ||
519             operation == AMDGPU_VA_OP_REPLACE) {
520                 r = amdgpu_vm_bo_update(adev, bo_va, false);
521                 if (r)
522                         goto error;
523         }
524
525         r = amdgpu_vm_update_directories(adev, vm);
526
527 error:
528         if (r && r != -ERESTARTSYS)
529                 DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
530 }
531
532 int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
533                           struct drm_file *filp)
534 {
535         const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE |
536                 AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE |
537                 AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK;
538         const uint32_t prt_flags = AMDGPU_VM_DELAY_UPDATE |
539                 AMDGPU_VM_PAGE_PRT;
540
541         struct drm_amdgpu_gem_va *args = data;
542         struct drm_gem_object *gobj;
543         struct amdgpu_device *adev = dev->dev_private;
544         struct amdgpu_fpriv *fpriv = filp->driver_priv;
545         struct amdgpu_bo *abo;
546         struct amdgpu_bo_va *bo_va;
547         struct amdgpu_bo_list_entry vm_pd;
548         struct ttm_validate_buffer tv;
549         struct ww_acquire_ctx ticket;
550         struct list_head list, duplicates;
551         uint64_t va_flags;
552         int r = 0;
553
554         if (args->va_address < AMDGPU_VA_RESERVED_SIZE) {
555                 dev_dbg(&dev->pdev->dev,
556                         "va_address 0x%LX is in reserved area 0x%LX\n",
557                         args->va_address, AMDGPU_VA_RESERVED_SIZE);
558                 return -EINVAL;
559         }
560
561         if (args->va_address >= AMDGPU_GMC_HOLE_START &&
562             args->va_address < AMDGPU_GMC_HOLE_END) {
563                 dev_dbg(&dev->pdev->dev,
564                         "va_address 0x%LX is in VA hole 0x%LX-0x%LX\n",
565                         args->va_address, AMDGPU_GMC_HOLE_START,
566                         AMDGPU_GMC_HOLE_END);
567                 return -EINVAL;
568         }
569
570         args->va_address &= AMDGPU_GMC_HOLE_MASK;
571
572         if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) {
573                 dev_dbg(&dev->pdev->dev, "invalid flags combination 0x%08X\n",
574                         args->flags);
575                 return -EINVAL;
576         }
577
578         switch (args->operation) {
579         case AMDGPU_VA_OP_MAP:
580         case AMDGPU_VA_OP_UNMAP:
581         case AMDGPU_VA_OP_CLEAR:
582         case AMDGPU_VA_OP_REPLACE:
583                 break;
584         default:
585                 dev_dbg(&dev->pdev->dev, "unsupported operation %d\n",
586                         args->operation);
587                 return -EINVAL;
588         }
589
590         INIT_LIST_HEAD(&list);
591         INIT_LIST_HEAD(&duplicates);
592         if ((args->operation != AMDGPU_VA_OP_CLEAR) &&
593             !(args->flags & AMDGPU_VM_PAGE_PRT)) {
594                 gobj = drm_gem_object_lookup(filp, args->handle);
595                 if (gobj == NULL)
596                         return -ENOENT;
597                 abo = gem_to_amdgpu_bo(gobj);
598                 tv.bo = &abo->tbo;
599                 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
600                         tv.num_shared = 1;
601                 else
602                         tv.num_shared = 0;
603                 list_add(&tv.head, &list);
604         } else {
605                 gobj = NULL;
606                 abo = NULL;
607         }
608
609         amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd);
610
611         r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates, true);
612         if (r)
613                 goto error_unref;
614
615         if (abo) {
616                 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo);
617                 if (!bo_va) {
618                         r = -ENOENT;
619                         goto error_backoff;
620                 }
621         } else if (args->operation != AMDGPU_VA_OP_CLEAR) {
622                 bo_va = fpriv->prt_va;
623         } else {
624                 bo_va = NULL;
625         }
626
627         switch (args->operation) {
628         case AMDGPU_VA_OP_MAP:
629                 va_flags = amdgpu_gmc_get_pte_flags(adev, args->flags);
630                 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
631                                      args->offset_in_bo, args->map_size,
632                                      va_flags);
633                 break;
634         case AMDGPU_VA_OP_UNMAP:
635                 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
636                 break;
637
638         case AMDGPU_VA_OP_CLEAR:
639                 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm,
640                                                 args->va_address,
641                                                 args->map_size);
642                 break;
643         case AMDGPU_VA_OP_REPLACE:
644                 va_flags = amdgpu_gmc_get_pte_flags(adev, args->flags);
645                 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address,
646                                              args->offset_in_bo, args->map_size,
647                                              va_flags);
648                 break;
649         default:
650                 break;
651         }
652         if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !amdgpu_vm_debug)
653                 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va,
654                                         args->operation);
655
656 error_backoff:
657         ttm_eu_backoff_reservation(&ticket, &list);
658
659 error_unref:
660         drm_gem_object_put_unlocked(gobj);
661         return r;
662 }
663
664 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
665                         struct drm_file *filp)
666 {
667         struct amdgpu_device *adev = dev->dev_private;
668         struct drm_amdgpu_gem_op *args = data;
669         struct drm_gem_object *gobj;
670         struct amdgpu_vm_bo_base *base;
671         struct amdgpu_bo *robj;
672         int r;
673
674         gobj = drm_gem_object_lookup(filp, args->handle);
675         if (gobj == NULL) {
676                 return -ENOENT;
677         }
678         robj = gem_to_amdgpu_bo(gobj);
679
680         r = amdgpu_bo_reserve(robj, false);
681         if (unlikely(r))
682                 goto out;
683
684         switch (args->op) {
685         case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: {
686                 struct drm_amdgpu_gem_create_in info;
687                 void __user *out = u64_to_user_ptr(args->value);
688
689                 info.bo_size = robj->gem_base.size;
690                 info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT;
691                 info.domains = robj->preferred_domains;
692                 info.domain_flags = robj->flags;
693                 amdgpu_bo_unreserve(robj);
694                 if (copy_to_user(out, &info, sizeof(info)))
695                         r = -EFAULT;
696                 break;
697         }
698         case AMDGPU_GEM_OP_SET_PLACEMENT:
699                 if (robj->prime_shared_count && (args->value & AMDGPU_GEM_DOMAIN_VRAM)) {
700                         r = -EINVAL;
701                         amdgpu_bo_unreserve(robj);
702                         break;
703                 }
704                 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) {
705                         r = -EPERM;
706                         amdgpu_bo_unreserve(robj);
707                         break;
708                 }
709                 for (base = robj->vm_bo; base; base = base->next)
710                         if (amdgpu_xgmi_same_hive(amdgpu_ttm_adev(robj->tbo.bdev),
711                                 amdgpu_ttm_adev(base->vm->root.base.bo->tbo.bdev))) {
712                                 r = -EINVAL;
713                                 amdgpu_bo_unreserve(robj);
714                                 goto out;
715                         }
716
717
718                 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM |
719                                                         AMDGPU_GEM_DOMAIN_GTT |
720                                                         AMDGPU_GEM_DOMAIN_CPU);
721                 robj->allowed_domains = robj->preferred_domains;
722                 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
723                         robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
724
725                 if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
726                         amdgpu_vm_bo_invalidate(adev, robj, true);
727
728                 amdgpu_bo_unreserve(robj);
729                 break;
730         default:
731                 amdgpu_bo_unreserve(robj);
732                 r = -EINVAL;
733         }
734
735 out:
736         drm_gem_object_put_unlocked(gobj);
737         return r;
738 }
739
740 int amdgpu_mode_dumb_create(struct drm_file *file_priv,
741                             struct drm_device *dev,
742                             struct drm_mode_create_dumb *args)
743 {
744         struct amdgpu_device *adev = dev->dev_private;
745         struct drm_gem_object *gobj;
746         uint32_t handle;
747         u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
748         u32 domain;
749         int r;
750
751         /*
752          * The buffer returned from this function should be cleared, but
753          * it can only be done if the ring is enabled or we'll fail to
754          * create the buffer.
755          */
756         if (adev->mman.buffer_funcs_enabled)
757                 flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED;
758
759         args->pitch = amdgpu_align_pitch(adev, args->width,
760                                          DIV_ROUND_UP(args->bpp, 8), 0);
761         args->size = (u64)args->pitch * args->height;
762         args->size = ALIGN(args->size, PAGE_SIZE);
763         domain = amdgpu_bo_get_preferred_pin_domain(adev,
764                                 amdgpu_display_supported_domains(adev));
765         r = amdgpu_gem_object_create(adev, args->size, 0, domain, flags,
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 }
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