]> Git Repo - linux.git/blob - drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
Merge branch 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux into 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/module.h>
30 #include <linux/pagemap.h>
31 #include <linux/pci.h>
32 #include <linux/dma-buf.h>
33
34 #include <drm/amdgpu_drm.h>
35 #include <drm/drm_debugfs.h>
36 #include <drm/drm_gem_ttm_helper.h>
37
38 #include "amdgpu.h"
39 #include "amdgpu_display.h"
40 #include "amdgpu_dma_buf.h"
41 #include "amdgpu_xgmi.h"
42
43 static const struct drm_gem_object_funcs amdgpu_gem_object_funcs;
44
45 static void amdgpu_gem_object_free(struct drm_gem_object *gobj)
46 {
47         struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj);
48
49         if (robj) {
50                 amdgpu_mn_unregister(robj);
51                 amdgpu_bo_unref(&robj);
52         }
53 }
54
55 int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
56                              int alignment, u32 initial_domain,
57                              u64 flags, enum ttm_bo_type type,
58                              struct dma_resv *resv,
59                              struct drm_gem_object **obj)
60 {
61         struct amdgpu_bo *bo;
62         struct amdgpu_bo_param bp;
63         int r;
64
65         memset(&bp, 0, sizeof(bp));
66         *obj = NULL;
67
68         bp.size = size;
69         bp.byte_align = alignment;
70         bp.type = type;
71         bp.resv = resv;
72         bp.preferred_domain = initial_domain;
73 retry:
74         bp.flags = flags;
75         bp.domain = initial_domain;
76         r = amdgpu_bo_create(adev, &bp, &bo);
77         if (r) {
78                 if (r != -ERESTARTSYS) {
79                         if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
80                                 flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
81                                 goto retry;
82                         }
83
84                         if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
85                                 initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
86                                 goto retry;
87                         }
88                         DRM_DEBUG("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
89                                   size, initial_domain, alignment, r);
90                 }
91                 return r;
92         }
93         *obj = &bo->tbo.base;
94         (*obj)->funcs = &amdgpu_gem_object_funcs;
95
96         return 0;
97 }
98
99 void amdgpu_gem_force_release(struct amdgpu_device *adev)
100 {
101         struct drm_device *ddev = adev_to_drm(adev);
102         struct drm_file *file;
103
104         mutex_lock(&ddev->filelist_mutex);
105
106         list_for_each_entry(file, &ddev->filelist, lhead) {
107                 struct drm_gem_object *gobj;
108                 int handle;
109
110                 WARN_ONCE(1, "Still active user space clients!\n");
111                 spin_lock(&file->table_lock);
112                 idr_for_each_entry(&file->object_idr, gobj, handle) {
113                         WARN_ONCE(1, "And also active allocations!\n");
114                         drm_gem_object_put(gobj);
115                 }
116                 idr_destroy(&file->object_idr);
117                 spin_unlock(&file->table_lock);
118         }
119
120         mutex_unlock(&ddev->filelist_mutex);
121 }
122
123 /*
124  * Call from drm_gem_handle_create which appear in both new and open ioctl
125  * case.
126  */
127 static int amdgpu_gem_object_open(struct drm_gem_object *obj,
128                                   struct drm_file *file_priv)
129 {
130         struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj);
131         struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
132         struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
133         struct amdgpu_vm *vm = &fpriv->vm;
134         struct amdgpu_bo_va *bo_va;
135         struct mm_struct *mm;
136         int r;
137
138         mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm);
139         if (mm && mm != current->mm)
140                 return -EPERM;
141
142         if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID &&
143             abo->tbo.base.resv != vm->root.base.bo->tbo.base.resv)
144                 return -EPERM;
145
146         r = amdgpu_bo_reserve(abo, false);
147         if (r)
148                 return r;
149
150         bo_va = amdgpu_vm_bo_find(vm, abo);
151         if (!bo_va) {
152                 bo_va = amdgpu_vm_bo_add(adev, vm, abo);
153         } else {
154                 ++bo_va->ref_count;
155         }
156         amdgpu_bo_unreserve(abo);
157         return 0;
158 }
159
160 static void amdgpu_gem_object_close(struct drm_gem_object *obj,
161                                     struct drm_file *file_priv)
162 {
163         struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
164         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
165         struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
166         struct amdgpu_vm *vm = &fpriv->vm;
167
168         struct amdgpu_bo_list_entry vm_pd;
169         struct list_head list, duplicates;
170         struct dma_fence *fence = NULL;
171         struct ttm_validate_buffer tv;
172         struct ww_acquire_ctx ticket;
173         struct amdgpu_bo_va *bo_va;
174         long r;
175
176         INIT_LIST_HEAD(&list);
177         INIT_LIST_HEAD(&duplicates);
178
179         tv.bo = &bo->tbo;
180         tv.num_shared = 2;
181         list_add(&tv.head, &list);
182
183         amdgpu_vm_get_pd_bo(vm, &list, &vm_pd);
184
185         r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates);
186         if (r) {
187                 dev_err(adev->dev, "leaking bo va because "
188                         "we fail to reserve bo (%ld)\n", r);
189                 return;
190         }
191         bo_va = amdgpu_vm_bo_find(vm, bo);
192         if (!bo_va || --bo_va->ref_count)
193                 goto out_unlock;
194
195         amdgpu_vm_bo_rmv(adev, bo_va);
196         if (!amdgpu_vm_ready(vm))
197                 goto out_unlock;
198
199         fence = dma_resv_get_excl(bo->tbo.base.resv);
200         if (fence) {
201                 amdgpu_bo_fence(bo, fence, true);
202                 fence = NULL;
203         }
204
205         r = amdgpu_vm_clear_freed(adev, vm, &fence);
206         if (r || !fence)
207                 goto out_unlock;
208
209         amdgpu_bo_fence(bo, fence, true);
210         dma_fence_put(fence);
211
212 out_unlock:
213         if (unlikely(r < 0))
214                 dev_err(adev->dev, "failed to clear page "
215                         "tables on GEM object close (%ld)\n", r);
216         ttm_eu_backoff_reservation(&ticket, &list);
217 }
218
219 static const struct drm_gem_object_funcs amdgpu_gem_object_funcs = {
220         .free = amdgpu_gem_object_free,
221         .open = amdgpu_gem_object_open,
222         .close = amdgpu_gem_object_close,
223         .export = amdgpu_gem_prime_export,
224         .vmap = drm_gem_ttm_vmap,
225         .vunmap = drm_gem_ttm_vunmap,
226 };
227
228 /*
229  * GEM ioctls.
230  */
231 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
232                             struct drm_file *filp)
233 {
234         struct amdgpu_device *adev = drm_to_adev(dev);
235         struct amdgpu_fpriv *fpriv = filp->driver_priv;
236         struct amdgpu_vm *vm = &fpriv->vm;
237         union drm_amdgpu_gem_create *args = data;
238         uint64_t flags = args->in.domain_flags;
239         uint64_t size = args->in.bo_size;
240         struct dma_resv *resv = NULL;
241         struct drm_gem_object *gobj;
242         uint32_t handle;
243         int r;
244
245         /* reject invalid gem flags */
246         if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
247                       AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
248                       AMDGPU_GEM_CREATE_CPU_GTT_USWC |
249                       AMDGPU_GEM_CREATE_VRAM_CLEARED |
250                       AMDGPU_GEM_CREATE_VM_ALWAYS_VALID |
251                       AMDGPU_GEM_CREATE_EXPLICIT_SYNC |
252                       AMDGPU_GEM_CREATE_ENCRYPTED))
253
254                 return -EINVAL;
255
256         /* reject invalid gem domains */
257         if (args->in.domains & ~AMDGPU_GEM_DOMAIN_MASK)
258                 return -EINVAL;
259
260         if (!amdgpu_is_tmz(adev) && (flags & AMDGPU_GEM_CREATE_ENCRYPTED)) {
261                 DRM_NOTE_ONCE("Cannot allocate secure buffer since TMZ is disabled\n");
262                 return -EINVAL;
263         }
264
265         /* create a gem object to contain this object in */
266         if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
267             AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
268                 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
269                         /* if gds bo is created from user space, it must be
270                          * passed to bo list
271                          */
272                         DRM_ERROR("GDS bo cannot be per-vm-bo\n");
273                         return -EINVAL;
274                 }
275                 flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
276         }
277
278         if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
279                 r = amdgpu_bo_reserve(vm->root.base.bo, false);
280                 if (r)
281                         return r;
282
283                 resv = vm->root.base.bo->tbo.base.resv;
284         }
285
286         r = amdgpu_gem_object_create(adev, size, args->in.alignment,
287                                      (u32)(0xffffffff & args->in.domains),
288                                      flags, ttm_bo_type_device, resv, &gobj);
289         if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
290                 if (!r) {
291                         struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj);
292
293                         abo->parent = amdgpu_bo_ref(vm->root.base.bo);
294                 }
295                 amdgpu_bo_unreserve(vm->root.base.bo);
296         }
297         if (r)
298                 return r;
299
300         r = drm_gem_handle_create(filp, gobj, &handle);
301         /* drop reference from allocate - handle holds it now */
302         drm_gem_object_put(gobj);
303         if (r)
304                 return r;
305
306         memset(args, 0, sizeof(*args));
307         args->out.handle = handle;
308         return 0;
309 }
310
311 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
312                              struct drm_file *filp)
313 {
314         struct ttm_operation_ctx ctx = { true, false };
315         struct amdgpu_device *adev = drm_to_adev(dev);
316         struct drm_amdgpu_gem_userptr *args = data;
317         struct drm_gem_object *gobj;
318         struct amdgpu_bo *bo;
319         uint32_t handle;
320         int r;
321
322         args->addr = untagged_addr(args->addr);
323
324         if (offset_in_page(args->addr | args->size))
325                 return -EINVAL;
326
327         /* reject unknown flag values */
328         if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
329             AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
330             AMDGPU_GEM_USERPTR_REGISTER))
331                 return -EINVAL;
332
333         if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
334              !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
335
336                 /* if we want to write to it we must install a MMU notifier */
337                 return -EACCES;
338         }
339
340         /* create a gem object to contain this object in */
341         r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU,
342                                      0, ttm_bo_type_device, NULL, &gobj);
343         if (r)
344                 return r;
345
346         bo = gem_to_amdgpu_bo(gobj);
347         bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT;
348         bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
349         r = amdgpu_ttm_tt_set_userptr(&bo->tbo, args->addr, args->flags);
350         if (r)
351                 goto release_object;
352
353         if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) {
354                 r = amdgpu_mn_register(bo, args->addr);
355                 if (r)
356                         goto release_object;
357         }
358
359         if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
360                 r = amdgpu_ttm_tt_get_user_pages(bo, bo->tbo.ttm->pages);
361                 if (r)
362                         goto release_object;
363
364                 r = amdgpu_bo_reserve(bo, true);
365                 if (r)
366                         goto user_pages_done;
367
368                 amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
369                 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
370                 amdgpu_bo_unreserve(bo);
371                 if (r)
372                         goto user_pages_done;
373         }
374
375         r = drm_gem_handle_create(filp, gobj, &handle);
376         if (r)
377                 goto user_pages_done;
378
379         args->handle = handle;
380
381 user_pages_done:
382         if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE)
383                 amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm);
384
385 release_object:
386         drm_gem_object_put(gobj);
387
388         return r;
389 }
390
391 int amdgpu_mode_dumb_mmap(struct drm_file *filp,
392                           struct drm_device *dev,
393                           uint32_t handle, uint64_t *offset_p)
394 {
395         struct drm_gem_object *gobj;
396         struct amdgpu_bo *robj;
397
398         gobj = drm_gem_object_lookup(filp, handle);
399         if (gobj == NULL) {
400                 return -ENOENT;
401         }
402         robj = gem_to_amdgpu_bo(gobj);
403         if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) ||
404             (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) {
405                 drm_gem_object_put(gobj);
406                 return -EPERM;
407         }
408         *offset_p = amdgpu_bo_mmap_offset(robj);
409         drm_gem_object_put(gobj);
410         return 0;
411 }
412
413 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data,
414                           struct drm_file *filp)
415 {
416         union drm_amdgpu_gem_mmap *args = data;
417         uint32_t handle = args->in.handle;
418         memset(args, 0, sizeof(*args));
419         return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);
420 }
421
422 /**
423  * amdgpu_gem_timeout - calculate jiffies timeout from absolute value
424  *
425  * @timeout_ns: timeout in ns
426  *
427  * Calculate the timeout in jiffies from an absolute timeout in ns.
428  */
429 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns)
430 {
431         unsigned long timeout_jiffies;
432         ktime_t timeout;
433
434         /* clamp timeout if it's to large */
435         if (((int64_t)timeout_ns) < 0)
436                 return MAX_SCHEDULE_TIMEOUT;
437
438         timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get());
439         if (ktime_to_ns(timeout) < 0)
440                 return 0;
441
442         timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout));
443         /*  clamp timeout to avoid unsigned-> signed overflow */
444         if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT )
445                 return MAX_SCHEDULE_TIMEOUT - 1;
446
447         return timeout_jiffies;
448 }
449
450 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
451                               struct drm_file *filp)
452 {
453         union drm_amdgpu_gem_wait_idle *args = data;
454         struct drm_gem_object *gobj;
455         struct amdgpu_bo *robj;
456         uint32_t handle = args->in.handle;
457         unsigned long timeout = amdgpu_gem_timeout(args->in.timeout);
458         int r = 0;
459         long ret;
460
461         gobj = drm_gem_object_lookup(filp, handle);
462         if (gobj == NULL) {
463                 return -ENOENT;
464         }
465         robj = gem_to_amdgpu_bo(gobj);
466         ret = dma_resv_wait_timeout_rcu(robj->tbo.base.resv, true, true,
467                                                   timeout);
468
469         /* ret == 0 means not signaled,
470          * ret > 0 means signaled
471          * ret < 0 means interrupted before timeout
472          */
473         if (ret >= 0) {
474                 memset(args, 0, sizeof(*args));
475                 args->out.status = (ret == 0);
476         } else
477                 r = ret;
478
479         drm_gem_object_put(gobj);
480         return r;
481 }
482
483 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
484                                 struct drm_file *filp)
485 {
486         struct drm_amdgpu_gem_metadata *args = data;
487         struct drm_gem_object *gobj;
488         struct amdgpu_bo *robj;
489         int r = -1;
490
491         DRM_DEBUG("%d \n", args->handle);
492         gobj = drm_gem_object_lookup(filp, args->handle);
493         if (gobj == NULL)
494                 return -ENOENT;
495         robj = gem_to_amdgpu_bo(gobj);
496
497         r = amdgpu_bo_reserve(robj, false);
498         if (unlikely(r != 0))
499                 goto out;
500
501         if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) {
502                 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info);
503                 r = amdgpu_bo_get_metadata(robj, args->data.data,
504                                            sizeof(args->data.data),
505                                            &args->data.data_size_bytes,
506                                            &args->data.flags);
507         } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) {
508                 if (args->data.data_size_bytes > sizeof(args->data.data)) {
509                         r = -EINVAL;
510                         goto unreserve;
511                 }
512                 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info);
513                 if (!r)
514                         r = amdgpu_bo_set_metadata(robj, args->data.data,
515                                                    args->data.data_size_bytes,
516                                                    args->data.flags);
517         }
518
519 unreserve:
520         amdgpu_bo_unreserve(robj);
521 out:
522         drm_gem_object_put(gobj);
523         return r;
524 }
525
526 /**
527  * amdgpu_gem_va_update_vm -update the bo_va in its VM
528  *
529  * @adev: amdgpu_device pointer
530  * @vm: vm to update
531  * @bo_va: bo_va to update
532  * @operation: map, unmap or clear
533  *
534  * Update the bo_va directly after setting its address. Errors are not
535  * vital here, so they are not reported back to userspace.
536  */
537 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
538                                     struct amdgpu_vm *vm,
539                                     struct amdgpu_bo_va *bo_va,
540                                     uint32_t operation)
541 {
542         int r;
543
544         if (!amdgpu_vm_ready(vm))
545                 return;
546
547         r = amdgpu_vm_clear_freed(adev, vm, NULL);
548         if (r)
549                 goto error;
550
551         if (operation == AMDGPU_VA_OP_MAP ||
552             operation == AMDGPU_VA_OP_REPLACE) {
553                 r = amdgpu_vm_bo_update(adev, bo_va, false);
554                 if (r)
555                         goto error;
556         }
557
558         r = amdgpu_vm_update_pdes(adev, vm, false);
559
560 error:
561         if (r && r != -ERESTARTSYS)
562                 DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
563 }
564
565 /**
566  * amdgpu_gem_va_map_flags - map GEM UAPI flags into hardware flags
567  *
568  * @adev: amdgpu_device pointer
569  * @flags: GEM UAPI flags
570  *
571  * Returns the GEM UAPI flags mapped into hardware for the ASIC.
572  */
573 uint64_t amdgpu_gem_va_map_flags(struct amdgpu_device *adev, uint32_t flags)
574 {
575         uint64_t pte_flag = 0;
576
577         if (flags & AMDGPU_VM_PAGE_EXECUTABLE)
578                 pte_flag |= AMDGPU_PTE_EXECUTABLE;
579         if (flags & AMDGPU_VM_PAGE_READABLE)
580                 pte_flag |= AMDGPU_PTE_READABLE;
581         if (flags & AMDGPU_VM_PAGE_WRITEABLE)
582                 pte_flag |= AMDGPU_PTE_WRITEABLE;
583         if (flags & AMDGPU_VM_PAGE_PRT)
584                 pte_flag |= AMDGPU_PTE_PRT;
585
586         if (adev->gmc.gmc_funcs->map_mtype)
587                 pte_flag |= amdgpu_gmc_map_mtype(adev,
588                                                  flags & AMDGPU_VM_MTYPE_MASK);
589
590         return pte_flag;
591 }
592
593 int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
594                           struct drm_file *filp)
595 {
596         const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE |
597                 AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE |
598                 AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK;
599         const uint32_t prt_flags = AMDGPU_VM_DELAY_UPDATE |
600                 AMDGPU_VM_PAGE_PRT;
601
602         struct drm_amdgpu_gem_va *args = data;
603         struct drm_gem_object *gobj;
604         struct amdgpu_device *adev = drm_to_adev(dev);
605         struct amdgpu_fpriv *fpriv = filp->driver_priv;
606         struct amdgpu_bo *abo;
607         struct amdgpu_bo_va *bo_va;
608         struct amdgpu_bo_list_entry vm_pd;
609         struct ttm_validate_buffer tv;
610         struct ww_acquire_ctx ticket;
611         struct list_head list, duplicates;
612         uint64_t va_flags;
613         uint64_t vm_size;
614         int r = 0;
615
616         if (args->va_address < AMDGPU_VA_RESERVED_SIZE) {
617                 dev_dbg(&dev->pdev->dev,
618                         "va_address 0x%LX is in reserved area 0x%LX\n",
619                         args->va_address, AMDGPU_VA_RESERVED_SIZE);
620                 return -EINVAL;
621         }
622
623         if (args->va_address >= AMDGPU_GMC_HOLE_START &&
624             args->va_address < AMDGPU_GMC_HOLE_END) {
625                 dev_dbg(&dev->pdev->dev,
626                         "va_address 0x%LX is in VA hole 0x%LX-0x%LX\n",
627                         args->va_address, AMDGPU_GMC_HOLE_START,
628                         AMDGPU_GMC_HOLE_END);
629                 return -EINVAL;
630         }
631
632         args->va_address &= AMDGPU_GMC_HOLE_MASK;
633
634         vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
635         vm_size -= AMDGPU_VA_RESERVED_SIZE;
636         if (args->va_address + args->map_size > vm_size) {
637                 dev_dbg(&dev->pdev->dev,
638                         "va_address 0x%llx is in top reserved area 0x%llx\n",
639                         args->va_address + args->map_size, vm_size);
640                 return -EINVAL;
641         }
642
643         if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) {
644                 dev_dbg(&dev->pdev->dev, "invalid flags combination 0x%08X\n",
645                         args->flags);
646                 return -EINVAL;
647         }
648
649         switch (args->operation) {
650         case AMDGPU_VA_OP_MAP:
651         case AMDGPU_VA_OP_UNMAP:
652         case AMDGPU_VA_OP_CLEAR:
653         case AMDGPU_VA_OP_REPLACE:
654                 break;
655         default:
656                 dev_dbg(&dev->pdev->dev, "unsupported operation %d\n",
657                         args->operation);
658                 return -EINVAL;
659         }
660
661         INIT_LIST_HEAD(&list);
662         INIT_LIST_HEAD(&duplicates);
663         if ((args->operation != AMDGPU_VA_OP_CLEAR) &&
664             !(args->flags & AMDGPU_VM_PAGE_PRT)) {
665                 gobj = drm_gem_object_lookup(filp, args->handle);
666                 if (gobj == NULL)
667                         return -ENOENT;
668                 abo = gem_to_amdgpu_bo(gobj);
669                 tv.bo = &abo->tbo;
670                 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
671                         tv.num_shared = 1;
672                 else
673                         tv.num_shared = 0;
674                 list_add(&tv.head, &list);
675         } else {
676                 gobj = NULL;
677                 abo = NULL;
678         }
679
680         amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd);
681
682         r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
683         if (r)
684                 goto error_unref;
685
686         if (abo) {
687                 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo);
688                 if (!bo_va) {
689                         r = -ENOENT;
690                         goto error_backoff;
691                 }
692         } else if (args->operation != AMDGPU_VA_OP_CLEAR) {
693                 bo_va = fpriv->prt_va;
694         } else {
695                 bo_va = NULL;
696         }
697
698         switch (args->operation) {
699         case AMDGPU_VA_OP_MAP:
700                 va_flags = amdgpu_gem_va_map_flags(adev, args->flags);
701                 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
702                                      args->offset_in_bo, args->map_size,
703                                      va_flags);
704                 break;
705         case AMDGPU_VA_OP_UNMAP:
706                 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
707                 break;
708
709         case AMDGPU_VA_OP_CLEAR:
710                 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm,
711                                                 args->va_address,
712                                                 args->map_size);
713                 break;
714         case AMDGPU_VA_OP_REPLACE:
715                 va_flags = amdgpu_gem_va_map_flags(adev, args->flags);
716                 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address,
717                                              args->offset_in_bo, args->map_size,
718                                              va_flags);
719                 break;
720         default:
721                 break;
722         }
723         if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !amdgpu_vm_debug)
724                 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va,
725                                         args->operation);
726
727 error_backoff:
728         ttm_eu_backoff_reservation(&ticket, &list);
729
730 error_unref:
731         drm_gem_object_put(gobj);
732         return r;
733 }
734
735 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
736                         struct drm_file *filp)
737 {
738         struct amdgpu_device *adev = drm_to_adev(dev);
739         struct drm_amdgpu_gem_op *args = data;
740         struct drm_gem_object *gobj;
741         struct amdgpu_vm_bo_base *base;
742         struct amdgpu_bo *robj;
743         int r;
744
745         gobj = drm_gem_object_lookup(filp, args->handle);
746         if (gobj == NULL) {
747                 return -ENOENT;
748         }
749         robj = gem_to_amdgpu_bo(gobj);
750
751         r = amdgpu_bo_reserve(robj, false);
752         if (unlikely(r))
753                 goto out;
754
755         switch (args->op) {
756         case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: {
757                 struct drm_amdgpu_gem_create_in info;
758                 void __user *out = u64_to_user_ptr(args->value);
759
760                 info.bo_size = robj->tbo.base.size;
761                 info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT;
762                 info.domains = robj->preferred_domains;
763                 info.domain_flags = robj->flags;
764                 amdgpu_bo_unreserve(robj);
765                 if (copy_to_user(out, &info, sizeof(info)))
766                         r = -EFAULT;
767                 break;
768         }
769         case AMDGPU_GEM_OP_SET_PLACEMENT:
770                 if (robj->prime_shared_count && (args->value & AMDGPU_GEM_DOMAIN_VRAM)) {
771                         r = -EINVAL;
772                         amdgpu_bo_unreserve(robj);
773                         break;
774                 }
775                 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) {
776                         r = -EPERM;
777                         amdgpu_bo_unreserve(robj);
778                         break;
779                 }
780                 for (base = robj->vm_bo; base; base = base->next)
781                         if (amdgpu_xgmi_same_hive(amdgpu_ttm_adev(robj->tbo.bdev),
782                                 amdgpu_ttm_adev(base->vm->root.base.bo->tbo.bdev))) {
783                                 r = -EINVAL;
784                                 amdgpu_bo_unreserve(robj);
785                                 goto out;
786                         }
787
788
789                 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM |
790                                                         AMDGPU_GEM_DOMAIN_GTT |
791                                                         AMDGPU_GEM_DOMAIN_CPU);
792                 robj->allowed_domains = robj->preferred_domains;
793                 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
794                         robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
795
796                 if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
797                         amdgpu_vm_bo_invalidate(adev, robj, true);
798
799                 amdgpu_bo_unreserve(robj);
800                 break;
801         default:
802                 amdgpu_bo_unreserve(robj);
803                 r = -EINVAL;
804         }
805
806 out:
807         drm_gem_object_put(gobj);
808         return r;
809 }
810
811 int amdgpu_mode_dumb_create(struct drm_file *file_priv,
812                             struct drm_device *dev,
813                             struct drm_mode_create_dumb *args)
814 {
815         struct amdgpu_device *adev = drm_to_adev(dev);
816         struct drm_gem_object *gobj;
817         uint32_t handle;
818         u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
819                     AMDGPU_GEM_CREATE_CPU_GTT_USWC;
820         u32 domain;
821         int r;
822
823         /*
824          * The buffer returned from this function should be cleared, but
825          * it can only be done if the ring is enabled or we'll fail to
826          * create the buffer.
827          */
828         if (adev->mman.buffer_funcs_enabled)
829                 flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED;
830
831         args->pitch = amdgpu_align_pitch(adev, args->width,
832                                          DIV_ROUND_UP(args->bpp, 8), 0);
833         args->size = (u64)args->pitch * args->height;
834         args->size = ALIGN(args->size, PAGE_SIZE);
835         domain = amdgpu_bo_get_preferred_pin_domain(adev,
836                                 amdgpu_display_supported_domains(adev, flags));
837         r = amdgpu_gem_object_create(adev, args->size, 0, domain, flags,
838                                      ttm_bo_type_device, NULL, &gobj);
839         if (r)
840                 return -ENOMEM;
841
842         r = drm_gem_handle_create(file_priv, gobj, &handle);
843         /* drop reference from allocate - handle holds it now */
844         drm_gem_object_put(gobj);
845         if (r) {
846                 return r;
847         }
848         args->handle = handle;
849         return 0;
850 }
851
852 #if defined(CONFIG_DEBUG_FS)
853 static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data)
854 {
855         struct drm_info_node *node = (struct drm_info_node *)m->private;
856         struct drm_device *dev = node->minor->dev;
857         struct drm_file *file;
858         int r;
859
860         r = mutex_lock_interruptible(&dev->filelist_mutex);
861         if (r)
862                 return r;
863
864         list_for_each_entry(file, &dev->filelist, lhead) {
865                 struct task_struct *task;
866                 struct drm_gem_object *gobj;
867                 int id;
868
869                 /*
870                  * Although we have a valid reference on file->pid, that does
871                  * not guarantee that the task_struct who called get_pid() is
872                  * still alive (e.g. get_pid(current) => fork() => exit()).
873                  * Therefore, we need to protect this ->comm access using RCU.
874                  */
875                 rcu_read_lock();
876                 task = pid_task(file->pid, PIDTYPE_PID);
877                 seq_printf(m, "pid %8d command %s:\n", pid_nr(file->pid),
878                            task ? task->comm : "<unknown>");
879                 rcu_read_unlock();
880
881                 spin_lock(&file->table_lock);
882                 idr_for_each_entry(&file->object_idr, gobj, id) {
883                         struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj);
884
885                         amdgpu_bo_print_info(id, bo, m);
886                 }
887                 spin_unlock(&file->table_lock);
888         }
889
890         mutex_unlock(&dev->filelist_mutex);
891         return 0;
892 }
893
894 static const struct drm_info_list amdgpu_debugfs_gem_list[] = {
895         {"amdgpu_gem_info", &amdgpu_debugfs_gem_info, 0, NULL},
896 };
897 #endif
898
899 int amdgpu_debugfs_gem_init(struct amdgpu_device *adev)
900 {
901 #if defined(CONFIG_DEBUG_FS)
902         return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_gem_list,
903                                         ARRAY_SIZE(amdgpu_debugfs_gem_list));
904 #endif
905         return 0;
906 }
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