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
37 #include "amdgpu.h"
38 #include "amdgpu_display.h"
39 #include "amdgpu_xgmi.h"
40
amdgpu_gem_object_free(struct drm_gem_object * gobj)41 void amdgpu_gem_object_free(struct drm_gem_object *gobj)
42 {
43 struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj);
44
45 if (robj) {
46 amdgpu_mn_unregister(robj);
47 amdgpu_bo_unref(&robj);
48 }
49 }
50
amdgpu_gem_object_create(struct amdgpu_device * adev,unsigned long size,int alignment,u32 initial_domain,u64 flags,enum ttm_bo_type type,struct dma_resv * resv,struct drm_gem_object ** obj)51 int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
52 int alignment, u32 initial_domain,
53 u64 flags, enum ttm_bo_type type,
54 struct dma_resv *resv,
55 struct drm_gem_object **obj)
56 {
57 struct amdgpu_bo *bo;
58 struct amdgpu_bo_param bp;
59 int r;
60
61 memset(&bp, 0, sizeof(bp));
62 *obj = NULL;
63
64 bp.size = size;
65 bp.byte_align = alignment;
66 bp.type = type;
67 bp.resv = resv;
68 bp.preferred_domain = initial_domain;
69 bp.flags = flags;
70 bp.domain = initial_domain;
71 r = amdgpu_bo_create(adev, &bp, &bo);
72 if (r)
73 return r;
74
75 *obj = &bo->tbo.base;
76
77 return 0;
78 }
79
amdgpu_gem_force_release(struct amdgpu_device * adev)80 void amdgpu_gem_force_release(struct amdgpu_device *adev)
81 {
82 struct drm_device *ddev = adev_to_drm(adev);
83 struct drm_file *file;
84
85 mutex_lock(&ddev->filelist_mutex);
86
87 list_for_each_entry(file, &ddev->filelist, lhead) {
88 struct drm_gem_object *gobj;
89 int handle;
90
91 WARN_ONCE(1, "Still active user space clients!\n");
92 spin_lock(&file->table_lock);
93 idr_for_each_entry(&file->object_idr, gobj, handle) {
94 WARN_ONCE(1, "And also active allocations!\n");
95 drm_gem_object_put(gobj);
96 }
97 idr_destroy(&file->object_idr);
98 spin_unlock(&file->table_lock);
99 }
100
101 mutex_unlock(&ddev->filelist_mutex);
102 }
103
104 /*
105 * Call from drm_gem_handle_create which appear in both new and open ioctl
106 * case.
107 */
amdgpu_gem_object_open(struct drm_gem_object * obj,struct drm_file * file_priv)108 int amdgpu_gem_object_open(struct drm_gem_object *obj,
109 struct drm_file *file_priv)
110 {
111 struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj);
112 struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
113 struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
114 struct amdgpu_vm *vm = &fpriv->vm;
115 struct amdgpu_bo_va *bo_va;
116 struct mm_struct *mm;
117 int r;
118
119 mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm);
120 if (mm && mm != current->mm)
121 return -EPERM;
122
123 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID &&
124 abo->tbo.base.resv != vm->root.base.bo->tbo.base.resv)
125 return -EPERM;
126
127 r = amdgpu_bo_reserve(abo, false);
128 if (r)
129 return r;
130
131 bo_va = amdgpu_vm_bo_find(vm, abo);
132 if (!bo_va) {
133 bo_va = amdgpu_vm_bo_add(adev, vm, abo);
134 } else {
135 ++bo_va->ref_count;
136 }
137 amdgpu_bo_unreserve(abo);
138 return 0;
139 }
140
amdgpu_gem_object_close(struct drm_gem_object * obj,struct drm_file * file_priv)141 void amdgpu_gem_object_close(struct drm_gem_object *obj,
142 struct drm_file *file_priv)
143 {
144 struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
145 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
146 struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
147 struct amdgpu_vm *vm = &fpriv->vm;
148
149 struct amdgpu_bo_list_entry vm_pd;
150 struct list_head list, duplicates;
151 struct dma_fence *fence = NULL;
152 struct ttm_validate_buffer tv;
153 struct ww_acquire_ctx ticket;
154 struct amdgpu_bo_va *bo_va;
155 long r;
156
157 INIT_LIST_HEAD(&list);
158 INIT_LIST_HEAD(&duplicates);
159
160 tv.bo = &bo->tbo;
161 tv.num_shared = 2;
162 list_add(&tv.head, &list);
163
164 amdgpu_vm_get_pd_bo(vm, &list, &vm_pd);
165
166 r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates);
167 if (r) {
168 dev_err(adev->dev, "leaking bo va because "
169 "we fail to reserve bo (%ld)\n", r);
170 return;
171 }
172 bo_va = amdgpu_vm_bo_find(vm, bo);
173 if (!bo_va || --bo_va->ref_count)
174 goto out_unlock;
175
176 amdgpu_vm_bo_rmv(adev, bo_va);
177 if (!amdgpu_vm_ready(vm))
178 goto out_unlock;
179
180 fence = dma_resv_get_excl(bo->tbo.base.resv);
181 if (fence) {
182 amdgpu_bo_fence(bo, fence, true);
183 fence = NULL;
184 }
185
186 r = amdgpu_vm_clear_freed(adev, vm, &fence);
187 if (r || !fence)
188 goto out_unlock;
189
190 amdgpu_bo_fence(bo, fence, true);
191 dma_fence_put(fence);
192
193 out_unlock:
194 if (unlikely(r < 0))
195 dev_err(adev->dev, "failed to clear page "
196 "tables on GEM object close (%ld)\n", r);
197 ttm_eu_backoff_reservation(&ticket, &list);
198 }
199
200 /*
201 * GEM ioctls.
202 */
amdgpu_gem_create_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)203 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
204 struct drm_file *filp)
205 {
206 struct amdgpu_device *adev = drm_to_adev(dev);
207 struct amdgpu_fpriv *fpriv = filp->driver_priv;
208 struct amdgpu_vm *vm = &fpriv->vm;
209 union drm_amdgpu_gem_create *args = data;
210 uint64_t flags = args->in.domain_flags;
211 uint64_t size = args->in.bo_size;
212 struct dma_resv *resv = NULL;
213 struct drm_gem_object *gobj;
214 uint32_t handle, initial_domain;
215 int r;
216
217 /* reject invalid gem flags */
218 if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
219 AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
220 AMDGPU_GEM_CREATE_CPU_GTT_USWC |
221 AMDGPU_GEM_CREATE_VRAM_CLEARED |
222 AMDGPU_GEM_CREATE_VM_ALWAYS_VALID |
223 AMDGPU_GEM_CREATE_EXPLICIT_SYNC |
224 AMDGPU_GEM_CREATE_ENCRYPTED))
225
226 return -EINVAL;
227
228 /* reject invalid gem domains */
229 if (args->in.domains & ~AMDGPU_GEM_DOMAIN_MASK)
230 return -EINVAL;
231
232 if (!amdgpu_is_tmz(adev) && (flags & AMDGPU_GEM_CREATE_ENCRYPTED)) {
233 DRM_NOTE_ONCE("Cannot allocate secure buffer since TMZ is disabled\n");
234 return -EINVAL;
235 }
236
237 /* create a gem object to contain this object in */
238 if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
239 AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
240 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
241 /* if gds bo is created from user space, it must be
242 * passed to bo list
243 */
244 DRM_ERROR("GDS bo cannot be per-vm-bo\n");
245 return -EINVAL;
246 }
247 flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
248 }
249
250 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
251 r = amdgpu_bo_reserve(vm->root.base.bo, false);
252 if (r)
253 return r;
254
255 resv = vm->root.base.bo->tbo.base.resv;
256 }
257
258 retry:
259 initial_domain = (u32)(0xffffffff & args->in.domains);
260 r = amdgpu_gem_object_create(adev, size, args->in.alignment,
261 initial_domain,
262 flags, ttm_bo_type_device, resv, &gobj);
263 if (r) {
264 if (r != -ERESTARTSYS) {
265 if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
266 flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
267 goto retry;
268 }
269
270 if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
271 initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
272 goto retry;
273 }
274 DRM_DEBUG("Failed to allocate GEM object (%llu, %d, %llu, %d)\n",
275 size, initial_domain, args->in.alignment, r);
276 }
277 return r;
278 }
279
280 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
281 if (!r) {
282 struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj);
283
284 abo->parent = amdgpu_bo_ref(vm->root.base.bo);
285 }
286 amdgpu_bo_unreserve(vm->root.base.bo);
287 }
288 if (r)
289 return r;
290
291 r = drm_gem_handle_create(filp, gobj, &handle);
292 /* drop reference from allocate - handle holds it now */
293 drm_gem_object_put(gobj);
294 if (r)
295 return r;
296
297 memset(args, 0, sizeof(*args));
298 args->out.handle = handle;
299 return 0;
300 }
301
amdgpu_gem_userptr_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)302 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
303 struct drm_file *filp)
304 {
305 struct ttm_operation_ctx ctx = { true, false };
306 struct amdgpu_device *adev = drm_to_adev(dev);
307 struct drm_amdgpu_gem_userptr *args = data;
308 struct drm_gem_object *gobj;
309 struct amdgpu_bo *bo;
310 uint32_t handle;
311 int r;
312
313 args->addr = untagged_addr(args->addr);
314
315 if (offset_in_page(args->addr | args->size))
316 return -EINVAL;
317
318 /* reject unknown flag values */
319 if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
320 AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
321 AMDGPU_GEM_USERPTR_REGISTER))
322 return -EINVAL;
323
324 if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
325 !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
326
327 /* if we want to write to it we must install a MMU notifier */
328 return -EACCES;
329 }
330
331 /* create a gem object to contain this object in */
332 r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU,
333 0, ttm_bo_type_device, NULL, &gobj);
334 if (r)
335 return r;
336
337 bo = gem_to_amdgpu_bo(gobj);
338 bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT;
339 bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
340 r = amdgpu_ttm_tt_set_userptr(&bo->tbo, args->addr, args->flags);
341 if (r)
342 goto release_object;
343
344 if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) {
345 r = amdgpu_mn_register(bo, args->addr);
346 if (r)
347 goto release_object;
348 }
349
350 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
351 r = amdgpu_ttm_tt_get_user_pages(bo, bo->tbo.ttm->pages);
352 if (r)
353 goto release_object;
354
355 r = amdgpu_bo_reserve(bo, true);
356 if (r)
357 goto user_pages_done;
358
359 amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
360 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
361 amdgpu_bo_unreserve(bo);
362 if (r)
363 goto user_pages_done;
364 }
365
366 r = drm_gem_handle_create(filp, gobj, &handle);
367 if (r)
368 goto user_pages_done;
369
370 args->handle = handle;
371
372 user_pages_done:
373 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE)
374 amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm);
375
376 release_object:
377 drm_gem_object_put(gobj);
378
379 return r;
380 }
381
amdgpu_mode_dumb_mmap(struct drm_file * filp,struct drm_device * dev,uint32_t handle,uint64_t * offset_p)382 int amdgpu_mode_dumb_mmap(struct drm_file *filp,
383 struct drm_device *dev,
384 uint32_t handle, uint64_t *offset_p)
385 {
386 struct drm_gem_object *gobj;
387 struct amdgpu_bo *robj;
388
389 gobj = drm_gem_object_lookup(filp, handle);
390 if (gobj == NULL) {
391 return -ENOENT;
392 }
393 robj = gem_to_amdgpu_bo(gobj);
394 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) ||
395 (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) {
396 drm_gem_object_put(gobj);
397 return -EPERM;
398 }
399 *offset_p = amdgpu_bo_mmap_offset(robj);
400 drm_gem_object_put(gobj);
401 return 0;
402 }
403
amdgpu_gem_mmap_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)404 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data,
405 struct drm_file *filp)
406 {
407 union drm_amdgpu_gem_mmap *args = data;
408 uint32_t handle = args->in.handle;
409 memset(args, 0, sizeof(*args));
410 return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);
411 }
412
413 /**
414 * amdgpu_gem_timeout - calculate jiffies timeout from absolute value
415 *
416 * @timeout_ns: timeout in ns
417 *
418 * Calculate the timeout in jiffies from an absolute timeout in ns.
419 */
amdgpu_gem_timeout(uint64_t timeout_ns)420 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns)
421 {
422 unsigned long timeout_jiffies;
423 ktime_t timeout;
424
425 /* clamp timeout if it's to large */
426 if (((int64_t)timeout_ns) < 0)
427 return MAX_SCHEDULE_TIMEOUT;
428
429 timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get());
430 if (ktime_to_ns(timeout) < 0)
431 return 0;
432
433 timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout));
434 /* clamp timeout to avoid unsigned-> signed overflow */
435 if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT )
436 return MAX_SCHEDULE_TIMEOUT - 1;
437
438 return timeout_jiffies;
439 }
440
amdgpu_gem_wait_idle_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)441 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
442 struct drm_file *filp)
443 {
444 union drm_amdgpu_gem_wait_idle *args = data;
445 struct drm_gem_object *gobj;
446 struct amdgpu_bo *robj;
447 uint32_t handle = args->in.handle;
448 unsigned long timeout = amdgpu_gem_timeout(args->in.timeout);
449 int r = 0;
450 long ret;
451
452 gobj = drm_gem_object_lookup(filp, handle);
453 if (gobj == NULL) {
454 return -ENOENT;
455 }
456 robj = gem_to_amdgpu_bo(gobj);
457 ret = dma_resv_wait_timeout_rcu(robj->tbo.base.resv, true, true,
458 timeout);
459
460 /* ret == 0 means not signaled,
461 * ret > 0 means signaled
462 * ret < 0 means interrupted before timeout
463 */
464 if (ret >= 0) {
465 memset(args, 0, sizeof(*args));
466 args->out.status = (ret == 0);
467 } else
468 r = ret;
469
470 drm_gem_object_put(gobj);
471 return r;
472 }
473
amdgpu_gem_metadata_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)474 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
475 struct drm_file *filp)
476 {
477 struct drm_amdgpu_gem_metadata *args = data;
478 struct drm_gem_object *gobj;
479 struct amdgpu_bo *robj;
480 int r = -1;
481
482 DRM_DEBUG("%d \n", args->handle);
483 gobj = drm_gem_object_lookup(filp, args->handle);
484 if (gobj == NULL)
485 return -ENOENT;
486 robj = gem_to_amdgpu_bo(gobj);
487
488 r = amdgpu_bo_reserve(robj, false);
489 if (unlikely(r != 0))
490 goto out;
491
492 if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) {
493 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info);
494 r = amdgpu_bo_get_metadata(robj, args->data.data,
495 sizeof(args->data.data),
496 &args->data.data_size_bytes,
497 &args->data.flags);
498 } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) {
499 if (args->data.data_size_bytes > sizeof(args->data.data)) {
500 r = -EINVAL;
501 goto unreserve;
502 }
503 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info);
504 if (!r)
505 r = amdgpu_bo_set_metadata(robj, args->data.data,
506 args->data.data_size_bytes,
507 args->data.flags);
508 }
509
510 unreserve:
511 amdgpu_bo_unreserve(robj);
512 out:
513 drm_gem_object_put(gobj);
514 return r;
515 }
516
517 /**
518 * amdgpu_gem_va_update_vm -update the bo_va in its VM
519 *
520 * @adev: amdgpu_device pointer
521 * @vm: vm to update
522 * @bo_va: bo_va to update
523 * @operation: map, unmap or clear
524 *
525 * Update the bo_va directly after setting its address. Errors are not
526 * vital here, so they are not reported back to userspace.
527 */
amdgpu_gem_va_update_vm(struct amdgpu_device * adev,struct amdgpu_vm * vm,struct amdgpu_bo_va * bo_va,uint32_t operation)528 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
529 struct amdgpu_vm *vm,
530 struct amdgpu_bo_va *bo_va,
531 uint32_t operation)
532 {
533 int r;
534
535 if (!amdgpu_vm_ready(vm))
536 return;
537
538 r = amdgpu_vm_clear_freed(adev, vm, NULL);
539 if (r)
540 goto error;
541
542 if (operation == AMDGPU_VA_OP_MAP ||
543 operation == AMDGPU_VA_OP_REPLACE) {
544 r = amdgpu_vm_bo_update(adev, bo_va, false);
545 if (r)
546 goto error;
547 }
548
549 r = amdgpu_vm_update_pdes(adev, vm, false);
550
551 error:
552 if (r && r != -ERESTARTSYS)
553 DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
554 }
555
556 /**
557 * amdgpu_gem_va_map_flags - map GEM UAPI flags into hardware flags
558 *
559 * @adev: amdgpu_device pointer
560 * @flags: GEM UAPI flags
561 *
562 * Returns the GEM UAPI flags mapped into hardware for the ASIC.
563 */
amdgpu_gem_va_map_flags(struct amdgpu_device * adev,uint32_t flags)564 uint64_t amdgpu_gem_va_map_flags(struct amdgpu_device *adev, uint32_t flags)
565 {
566 uint64_t pte_flag = 0;
567
568 if (flags & AMDGPU_VM_PAGE_EXECUTABLE)
569 pte_flag |= AMDGPU_PTE_EXECUTABLE;
570 if (flags & AMDGPU_VM_PAGE_READABLE)
571 pte_flag |= AMDGPU_PTE_READABLE;
572 if (flags & AMDGPU_VM_PAGE_WRITEABLE)
573 pte_flag |= AMDGPU_PTE_WRITEABLE;
574 if (flags & AMDGPU_VM_PAGE_PRT)
575 pte_flag |= AMDGPU_PTE_PRT;
576
577 if (adev->gmc.gmc_funcs->map_mtype)
578 pte_flag |= amdgpu_gmc_map_mtype(adev,
579 flags & AMDGPU_VM_MTYPE_MASK);
580
581 return pte_flag;
582 }
583
amdgpu_gem_va_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)584 int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
585 struct drm_file *filp)
586 {
587 const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE |
588 AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE |
589 AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK;
590 const uint32_t prt_flags = AMDGPU_VM_DELAY_UPDATE |
591 AMDGPU_VM_PAGE_PRT;
592
593 struct drm_amdgpu_gem_va *args = data;
594 struct drm_gem_object *gobj;
595 struct amdgpu_device *adev = drm_to_adev(dev);
596 struct amdgpu_fpriv *fpriv = filp->driver_priv;
597 struct amdgpu_bo *abo;
598 struct amdgpu_bo_va *bo_va;
599 struct amdgpu_bo_list_entry vm_pd;
600 struct ttm_validate_buffer tv;
601 struct ww_acquire_ctx ticket;
602 struct list_head list, duplicates;
603 uint64_t va_flags;
604 uint64_t vm_size;
605 int r = 0;
606
607 if (args->va_address < AMDGPU_VA_RESERVED_SIZE) {
608 dev_dbg(&dev->pdev->dev,
609 "va_address 0x%LX is in reserved area 0x%LX\n",
610 args->va_address, AMDGPU_VA_RESERVED_SIZE);
611 return -EINVAL;
612 }
613
614 if (args->va_address >= AMDGPU_GMC_HOLE_START &&
615 args->va_address < AMDGPU_GMC_HOLE_END) {
616 dev_dbg(&dev->pdev->dev,
617 "va_address 0x%LX is in VA hole 0x%LX-0x%LX\n",
618 args->va_address, AMDGPU_GMC_HOLE_START,
619 AMDGPU_GMC_HOLE_END);
620 return -EINVAL;
621 }
622
623 args->va_address &= AMDGPU_GMC_HOLE_MASK;
624
625 vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
626 vm_size -= AMDGPU_VA_RESERVED_SIZE;
627 if (args->va_address + args->map_size > vm_size) {
628 dev_dbg(&dev->pdev->dev,
629 "va_address 0x%llx is in top reserved area 0x%llx\n",
630 args->va_address + args->map_size, vm_size);
631 return -EINVAL;
632 }
633
634 if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) {
635 dev_dbg(&dev->pdev->dev, "invalid flags combination 0x%08X\n",
636 args->flags);
637 return -EINVAL;
638 }
639
640 switch (args->operation) {
641 case AMDGPU_VA_OP_MAP:
642 case AMDGPU_VA_OP_UNMAP:
643 case AMDGPU_VA_OP_CLEAR:
644 case AMDGPU_VA_OP_REPLACE:
645 break;
646 default:
647 dev_dbg(&dev->pdev->dev, "unsupported operation %d\n",
648 args->operation);
649 return -EINVAL;
650 }
651
652 INIT_LIST_HEAD(&list);
653 INIT_LIST_HEAD(&duplicates);
654 if ((args->operation != AMDGPU_VA_OP_CLEAR) &&
655 !(args->flags & AMDGPU_VM_PAGE_PRT)) {
656 gobj = drm_gem_object_lookup(filp, args->handle);
657 if (gobj == NULL)
658 return -ENOENT;
659 abo = gem_to_amdgpu_bo(gobj);
660 tv.bo = &abo->tbo;
661 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
662 tv.num_shared = 1;
663 else
664 tv.num_shared = 0;
665 list_add(&tv.head, &list);
666 } else {
667 gobj = NULL;
668 abo = NULL;
669 }
670
671 amdgpu_vm_get_pd_bo(&fpriv->vm, &list, &vm_pd);
672
673 r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
674 if (r)
675 goto error_unref;
676
677 if (abo) {
678 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo);
679 if (!bo_va) {
680 r = -ENOENT;
681 goto error_backoff;
682 }
683 } else if (args->operation != AMDGPU_VA_OP_CLEAR) {
684 bo_va = fpriv->prt_va;
685 } else {
686 bo_va = NULL;
687 }
688
689 switch (args->operation) {
690 case AMDGPU_VA_OP_MAP:
691 va_flags = amdgpu_gem_va_map_flags(adev, args->flags);
692 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
693 args->offset_in_bo, args->map_size,
694 va_flags);
695 break;
696 case AMDGPU_VA_OP_UNMAP:
697 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
698 break;
699
700 case AMDGPU_VA_OP_CLEAR:
701 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm,
702 args->va_address,
703 args->map_size);
704 break;
705 case AMDGPU_VA_OP_REPLACE:
706 va_flags = amdgpu_gem_va_map_flags(adev, args->flags);
707 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address,
708 args->offset_in_bo, args->map_size,
709 va_flags);
710 break;
711 default:
712 break;
713 }
714 if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !amdgpu_vm_debug)
715 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va,
716 args->operation);
717
718 error_backoff:
719 ttm_eu_backoff_reservation(&ticket, &list);
720
721 error_unref:
722 drm_gem_object_put(gobj);
723 return r;
724 }
725
amdgpu_gem_op_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)726 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
727 struct drm_file *filp)
728 {
729 struct amdgpu_device *adev = drm_to_adev(dev);
730 struct drm_amdgpu_gem_op *args = data;
731 struct drm_gem_object *gobj;
732 struct amdgpu_vm_bo_base *base;
733 struct amdgpu_bo *robj;
734 int r;
735
736 gobj = drm_gem_object_lookup(filp, args->handle);
737 if (gobj == NULL) {
738 return -ENOENT;
739 }
740 robj = gem_to_amdgpu_bo(gobj);
741
742 r = amdgpu_bo_reserve(robj, false);
743 if (unlikely(r))
744 goto out;
745
746 switch (args->op) {
747 case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: {
748 struct drm_amdgpu_gem_create_in info;
749 void __user *out = u64_to_user_ptr(args->value);
750
751 info.bo_size = robj->tbo.base.size;
752 info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT;
753 info.domains = robj->preferred_domains;
754 info.domain_flags = robj->flags;
755 amdgpu_bo_unreserve(robj);
756 if (copy_to_user(out, &info, sizeof(info)))
757 r = -EFAULT;
758 break;
759 }
760 case AMDGPU_GEM_OP_SET_PLACEMENT:
761 if (robj->prime_shared_count && (args->value & AMDGPU_GEM_DOMAIN_VRAM)) {
762 r = -EINVAL;
763 amdgpu_bo_unreserve(robj);
764 break;
765 }
766 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) {
767 r = -EPERM;
768 amdgpu_bo_unreserve(robj);
769 break;
770 }
771 for (base = robj->vm_bo; base; base = base->next)
772 if (amdgpu_xgmi_same_hive(amdgpu_ttm_adev(robj->tbo.bdev),
773 amdgpu_ttm_adev(base->vm->root.base.bo->tbo.bdev))) {
774 r = -EINVAL;
775 amdgpu_bo_unreserve(robj);
776 goto out;
777 }
778
779
780 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM |
781 AMDGPU_GEM_DOMAIN_GTT |
782 AMDGPU_GEM_DOMAIN_CPU);
783 robj->allowed_domains = robj->preferred_domains;
784 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
785 robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
786
787 if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
788 amdgpu_vm_bo_invalidate(adev, robj, true);
789
790 amdgpu_bo_unreserve(robj);
791 break;
792 default:
793 amdgpu_bo_unreserve(robj);
794 r = -EINVAL;
795 }
796
797 out:
798 drm_gem_object_put(gobj);
799 return r;
800 }
801
amdgpu_mode_dumb_create(struct drm_file * file_priv,struct drm_device * dev,struct drm_mode_create_dumb * args)802 int amdgpu_mode_dumb_create(struct drm_file *file_priv,
803 struct drm_device *dev,
804 struct drm_mode_create_dumb *args)
805 {
806 struct amdgpu_device *adev = drm_to_adev(dev);
807 struct drm_gem_object *gobj;
808 uint32_t handle;
809 u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
810 AMDGPU_GEM_CREATE_CPU_GTT_USWC;
811 u32 domain;
812 int r;
813
814 /*
815 * The buffer returned from this function should be cleared, but
816 * it can only be done if the ring is enabled or we'll fail to
817 * create the buffer.
818 */
819 if (adev->mman.buffer_funcs_enabled)
820 flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED;
821
822 args->pitch = amdgpu_align_pitch(adev, args->width,
823 DIV_ROUND_UP(args->bpp, 8), 0);
824 args->size = (u64)args->pitch * args->height;
825 args->size = ALIGN(args->size, PAGE_SIZE);
826 domain = amdgpu_bo_get_preferred_pin_domain(adev,
827 amdgpu_display_supported_domains(adev, flags));
828 r = amdgpu_gem_object_create(adev, args->size, 0, domain, flags,
829 ttm_bo_type_device, NULL, &gobj);
830 if (r)
831 return -ENOMEM;
832
833 r = drm_gem_handle_create(file_priv, gobj, &handle);
834 /* drop reference from allocate - handle holds it now */
835 drm_gem_object_put(gobj);
836 if (r) {
837 return r;
838 }
839 args->handle = handle;
840 return 0;
841 }
842
843 #if defined(CONFIG_DEBUG_FS)
844
845 #define amdgpu_debugfs_gem_bo_print_flag(m, bo, flag) \
846 if (bo->flags & (AMDGPU_GEM_CREATE_ ## flag)) { \
847 seq_printf((m), " " #flag); \
848 }
849
amdgpu_debugfs_gem_bo_info(int id,void * ptr,void * data)850 static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data)
851 {
852 struct drm_gem_object *gobj = ptr;
853 struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj);
854 struct seq_file *m = data;
855
856 struct dma_buf_attachment *attachment;
857 struct dma_buf *dma_buf;
858 unsigned domain;
859 const char *placement;
860 unsigned pin_count;
861
862 domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
863 switch (domain) {
864 case AMDGPU_GEM_DOMAIN_VRAM:
865 placement = "VRAM";
866 break;
867 case AMDGPU_GEM_DOMAIN_GTT:
868 placement = " GTT";
869 break;
870 case AMDGPU_GEM_DOMAIN_CPU:
871 default:
872 placement = " CPU";
873 break;
874 }
875 seq_printf(m, "\t0x%08x: %12ld byte %s",
876 id, amdgpu_bo_size(bo), placement);
877
878 pin_count = READ_ONCE(bo->pin_count);
879 if (pin_count)
880 seq_printf(m, " pin count %d", pin_count);
881
882 dma_buf = READ_ONCE(bo->tbo.base.dma_buf);
883 attachment = READ_ONCE(bo->tbo.base.import_attach);
884
885 if (attachment)
886 seq_printf(m, " imported from %p%s", dma_buf,
887 attachment->peer2peer ? " P2P" : "");
888 else if (dma_buf)
889 seq_printf(m, " exported as %p", dma_buf);
890
891 amdgpu_debugfs_gem_bo_print_flag(m, bo, CPU_ACCESS_REQUIRED);
892 amdgpu_debugfs_gem_bo_print_flag(m, bo, NO_CPU_ACCESS);
893 amdgpu_debugfs_gem_bo_print_flag(m, bo, CPU_GTT_USWC);
894 amdgpu_debugfs_gem_bo_print_flag(m, bo, VRAM_CLEARED);
895 amdgpu_debugfs_gem_bo_print_flag(m, bo, SHADOW);
896 amdgpu_debugfs_gem_bo_print_flag(m, bo, VRAM_CONTIGUOUS);
897 amdgpu_debugfs_gem_bo_print_flag(m, bo, VM_ALWAYS_VALID);
898 amdgpu_debugfs_gem_bo_print_flag(m, bo, EXPLICIT_SYNC);
899
900 seq_printf(m, "\n");
901
902 return 0;
903 }
904
amdgpu_debugfs_gem_info(struct seq_file * m,void * data)905 static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data)
906 {
907 struct drm_info_node *node = (struct drm_info_node *)m->private;
908 struct drm_device *dev = node->minor->dev;
909 struct drm_file *file;
910 int r;
911
912 r = mutex_lock_interruptible(&dev->filelist_mutex);
913 if (r)
914 return r;
915
916 list_for_each_entry(file, &dev->filelist, lhead) {
917 struct task_struct *task;
918
919 /*
920 * Although we have a valid reference on file->pid, that does
921 * not guarantee that the task_struct who called get_pid() is
922 * still alive (e.g. get_pid(current) => fork() => exit()).
923 * Therefore, we need to protect this ->comm access using RCU.
924 */
925 rcu_read_lock();
926 task = pid_task(file->pid, PIDTYPE_PID);
927 seq_printf(m, "pid %8d command %s:\n", pid_nr(file->pid),
928 task ? task->comm : "<unknown>");
929 rcu_read_unlock();
930
931 spin_lock(&file->table_lock);
932 idr_for_each(&file->object_idr, amdgpu_debugfs_gem_bo_info, m);
933 spin_unlock(&file->table_lock);
934 }
935
936 mutex_unlock(&dev->filelist_mutex);
937 return 0;
938 }
939
940 static const struct drm_info_list amdgpu_debugfs_gem_list[] = {
941 {"amdgpu_gem_info", &amdgpu_debugfs_gem_info, 0, NULL},
942 };
943 #endif
944
amdgpu_debugfs_gem_init(struct amdgpu_device * adev)945 int amdgpu_debugfs_gem_init(struct amdgpu_device *adev)
946 {
947 #if defined(CONFIG_DEBUG_FS)
948 return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_gem_list,
949 ARRAY_SIZE(amdgpu_debugfs_gem_list));
950 #endif
951 return 0;
952 }
953