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_drv.h>
36 #include <drm/drm_exec.h>
37 #include <drm/drm_gem_ttm_helper.h>
38 #include <drm/ttm/ttm_tt.h>
39
40 #include "amdgpu.h"
41 #include "amdgpu_display.h"
42 #include "amdgpu_dma_buf.h"
43 #include "amdgpu_hmm.h"
44 #include "amdgpu_xgmi.h"
45
amdgpu_gem_fault(struct vm_fault * vmf)46 static vm_fault_t amdgpu_gem_fault(struct vm_fault *vmf)
47 {
48 struct ttm_buffer_object *bo = vmf->vma->vm_private_data;
49 struct drm_device *ddev = bo->base.dev;
50 vm_fault_t ret;
51 int idx;
52
53 ret = ttm_bo_vm_reserve(bo, vmf);
54 if (ret)
55 return ret;
56
57 if (drm_dev_enter(ddev, &idx)) {
58 ret = amdgpu_bo_fault_reserve_notify(bo);
59 if (ret) {
60 drm_dev_exit(idx);
61 goto unlock;
62 }
63
64 ret = ttm_bo_vm_fault_reserved(vmf, vmf->vma->vm_page_prot,
65 TTM_BO_VM_NUM_PREFAULT);
66
67 drm_dev_exit(idx);
68 } else {
69 ret = ttm_bo_vm_dummy_page(vmf, vmf->vma->vm_page_prot);
70 }
71 if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT))
72 return ret;
73
74 unlock:
75 dma_resv_unlock(bo->base.resv);
76 return ret;
77 }
78
79 static const struct vm_operations_struct amdgpu_gem_vm_ops = {
80 .fault = amdgpu_gem_fault,
81 .open = ttm_bo_vm_open,
82 .close = ttm_bo_vm_close,
83 .access = ttm_bo_vm_access
84 };
85
amdgpu_gem_object_free(struct drm_gem_object * gobj)86 static void amdgpu_gem_object_free(struct drm_gem_object *gobj)
87 {
88 struct amdgpu_bo *aobj = gem_to_amdgpu_bo(gobj);
89
90 if (aobj) {
91 amdgpu_hmm_unregister(aobj);
92 ttm_bo_put(&aobj->tbo);
93 }
94 }
95
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,int8_t xcp_id_plus1)96 int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
97 int alignment, u32 initial_domain,
98 u64 flags, enum ttm_bo_type type,
99 struct dma_resv *resv,
100 struct drm_gem_object **obj, int8_t xcp_id_plus1)
101 {
102 struct amdgpu_bo *bo;
103 struct amdgpu_bo_user *ubo;
104 struct amdgpu_bo_param bp;
105 int r;
106
107 memset(&bp, 0, sizeof(bp));
108 *obj = NULL;
109 flags |= AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE;
110
111 bp.size = size;
112 bp.byte_align = alignment;
113 bp.type = type;
114 bp.resv = resv;
115 bp.preferred_domain = initial_domain;
116 bp.flags = flags;
117 bp.domain = initial_domain;
118 bp.bo_ptr_size = sizeof(struct amdgpu_bo);
119 bp.xcp_id_plus1 = xcp_id_plus1;
120
121 r = amdgpu_bo_create_user(adev, &bp, &ubo);
122 if (r)
123 return r;
124
125 bo = &ubo->bo;
126 *obj = &bo->tbo.base;
127
128 return 0;
129 }
130
amdgpu_gem_force_release(struct amdgpu_device * adev)131 void amdgpu_gem_force_release(struct amdgpu_device *adev)
132 {
133 struct drm_device *ddev = adev_to_drm(adev);
134 struct drm_file *file;
135
136 mutex_lock(&ddev->filelist_mutex);
137
138 list_for_each_entry(file, &ddev->filelist, lhead) {
139 struct drm_gem_object *gobj;
140 int handle;
141
142 WARN_ONCE(1, "Still active user space clients!\n");
143 spin_lock(&file->table_lock);
144 idr_for_each_entry(&file->object_idr, gobj, handle) {
145 WARN_ONCE(1, "And also active allocations!\n");
146 drm_gem_object_put(gobj);
147 }
148 idr_destroy(&file->object_idr);
149 spin_unlock(&file->table_lock);
150 }
151
152 mutex_unlock(&ddev->filelist_mutex);
153 }
154
155 /*
156 * Call from drm_gem_handle_create which appear in both new and open ioctl
157 * case.
158 */
amdgpu_gem_object_open(struct drm_gem_object * obj,struct drm_file * file_priv)159 static int amdgpu_gem_object_open(struct drm_gem_object *obj,
160 struct drm_file *file_priv)
161 {
162 struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj);
163 struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
164 struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
165 struct amdgpu_vm *vm = &fpriv->vm;
166 struct amdgpu_bo_va *bo_va;
167 struct mm_struct *mm;
168 int r;
169
170 mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm);
171 if (mm && mm != current->mm)
172 return -EPERM;
173
174 if (abo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID &&
175 !amdgpu_vm_is_bo_always_valid(vm, abo))
176 return -EPERM;
177
178 r = amdgpu_bo_reserve(abo, false);
179 if (r)
180 return r;
181
182 bo_va = amdgpu_vm_bo_find(vm, abo);
183 if (!bo_va)
184 bo_va = amdgpu_vm_bo_add(adev, vm, abo);
185 else
186 ++bo_va->ref_count;
187 amdgpu_bo_unreserve(abo);
188
189 /* Validate and add eviction fence to DMABuf imports with dynamic
190 * attachment in compute VMs. Re-validation will be done by
191 * amdgpu_vm_validate. Fences are on the reservation shared with the
192 * export, which is currently required to be validated and fenced
193 * already by amdgpu_amdkfd_gpuvm_restore_process_bos.
194 *
195 * Nested locking below for the case that a GEM object is opened in
196 * kfd_mem_export_dmabuf. Since the lock below is only taken for imports,
197 * but not for export, this is a different lock class that cannot lead to
198 * circular lock dependencies.
199 */
200 if (!vm->is_compute_context || !vm->process_info)
201 return 0;
202 if (!obj->import_attach ||
203 !dma_buf_is_dynamic(obj->import_attach->dmabuf))
204 return 0;
205 mutex_lock_nested(&vm->process_info->lock, 1);
206 if (!WARN_ON(!vm->process_info->eviction_fence)) {
207 r = amdgpu_amdkfd_bo_validate_and_fence(abo, AMDGPU_GEM_DOMAIN_GTT,
208 &vm->process_info->eviction_fence->base);
209 if (r) {
210 struct amdgpu_task_info *ti = amdgpu_vm_get_task_info_vm(vm);
211
212 dev_warn(adev->dev, "validate_and_fence failed: %d\n", r);
213 if (ti) {
214 dev_warn(adev->dev, "pid %d\n", ti->pid);
215 amdgpu_vm_put_task_info(ti);
216 }
217 }
218 }
219 mutex_unlock(&vm->process_info->lock);
220
221 return r;
222 }
223
amdgpu_gem_object_close(struct drm_gem_object * obj,struct drm_file * file_priv)224 static void amdgpu_gem_object_close(struct drm_gem_object *obj,
225 struct drm_file *file_priv)
226 {
227 struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
228 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
229 struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
230 struct amdgpu_vm *vm = &fpriv->vm;
231
232 struct dma_fence *fence = NULL;
233 struct amdgpu_bo_va *bo_va;
234 struct drm_exec exec;
235 long r;
236
237 drm_exec_init(&exec, DRM_EXEC_IGNORE_DUPLICATES, 0);
238 drm_exec_until_all_locked(&exec) {
239 r = drm_exec_prepare_obj(&exec, &bo->tbo.base, 1);
240 drm_exec_retry_on_contention(&exec);
241 if (unlikely(r))
242 goto out_unlock;
243
244 r = amdgpu_vm_lock_pd(vm, &exec, 0);
245 drm_exec_retry_on_contention(&exec);
246 if (unlikely(r))
247 goto out_unlock;
248 }
249
250 bo_va = amdgpu_vm_bo_find(vm, bo);
251 if (!bo_va || --bo_va->ref_count)
252 goto out_unlock;
253
254 amdgpu_vm_bo_del(adev, bo_va);
255 if (!amdgpu_vm_ready(vm))
256 goto out_unlock;
257
258 r = amdgpu_vm_clear_freed(adev, vm, &fence);
259 if (unlikely(r < 0))
260 dev_err(adev->dev, "failed to clear page "
261 "tables on GEM object close (%ld)\n", r);
262 if (r || !fence)
263 goto out_unlock;
264
265 amdgpu_bo_fence(bo, fence, true);
266 dma_fence_put(fence);
267
268 out_unlock:
269 if (r)
270 dev_err(adev->dev, "leaking bo va (%ld)\n", r);
271 drm_exec_fini(&exec);
272 }
273
amdgpu_gem_object_mmap(struct drm_gem_object * obj,struct vm_area_struct * vma)274 static int amdgpu_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
275 {
276 struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
277
278 if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm))
279 return -EPERM;
280 if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
281 return -EPERM;
282
283 /* Workaround for Thunk bug creating PROT_NONE,MAP_PRIVATE mappings
284 * for debugger access to invisible VRAM. Should have used MAP_SHARED
285 * instead. Clearing VM_MAYWRITE prevents the mapping from ever
286 * becoming writable and makes is_cow_mapping(vm_flags) false.
287 */
288 if (is_cow_mapping(vma->vm_flags) &&
289 !(vma->vm_flags & VM_ACCESS_FLAGS))
290 vm_flags_clear(vma, VM_MAYWRITE);
291
292 return drm_gem_ttm_mmap(obj, vma);
293 }
294
295 const struct drm_gem_object_funcs amdgpu_gem_object_funcs = {
296 .free = amdgpu_gem_object_free,
297 .open = amdgpu_gem_object_open,
298 .close = amdgpu_gem_object_close,
299 .export = amdgpu_gem_prime_export,
300 .vmap = drm_gem_ttm_vmap,
301 .vunmap = drm_gem_ttm_vunmap,
302 .mmap = amdgpu_gem_object_mmap,
303 .vm_ops = &amdgpu_gem_vm_ops,
304 };
305
306 /*
307 * GEM ioctls.
308 */
amdgpu_gem_create_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)309 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
310 struct drm_file *filp)
311 {
312 struct amdgpu_device *adev = drm_to_adev(dev);
313 struct amdgpu_fpriv *fpriv = filp->driver_priv;
314 struct amdgpu_vm *vm = &fpriv->vm;
315 union drm_amdgpu_gem_create *args = data;
316 uint64_t flags = args->in.domain_flags;
317 uint64_t size = args->in.bo_size;
318 struct dma_resv *resv = NULL;
319 struct drm_gem_object *gobj;
320 uint32_t handle, initial_domain;
321 int r;
322
323 /* reject DOORBELLs until userspace code to use it is available */
324 if (args->in.domains & AMDGPU_GEM_DOMAIN_DOORBELL)
325 return -EINVAL;
326
327 /* reject invalid gem flags */
328 if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
329 AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
330 AMDGPU_GEM_CREATE_CPU_GTT_USWC |
331 AMDGPU_GEM_CREATE_VRAM_CLEARED |
332 AMDGPU_GEM_CREATE_VM_ALWAYS_VALID |
333 AMDGPU_GEM_CREATE_EXPLICIT_SYNC |
334 AMDGPU_GEM_CREATE_ENCRYPTED |
335 AMDGPU_GEM_CREATE_GFX12_DCC |
336 AMDGPU_GEM_CREATE_DISCARDABLE))
337 return -EINVAL;
338
339 /* reject invalid gem domains */
340 if (args->in.domains & ~AMDGPU_GEM_DOMAIN_MASK)
341 return -EINVAL;
342
343 if (!amdgpu_is_tmz(adev) && (flags & AMDGPU_GEM_CREATE_ENCRYPTED)) {
344 DRM_NOTE_ONCE("Cannot allocate secure buffer since TMZ is disabled\n");
345 return -EINVAL;
346 }
347
348 /* always clear VRAM */
349 flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED;
350
351 /* create a gem object to contain this object in */
352 if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
353 AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
354 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
355 /* if gds bo is created from user space, it must be
356 * passed to bo list
357 */
358 DRM_ERROR("GDS bo cannot be per-vm-bo\n");
359 return -EINVAL;
360 }
361 flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
362 }
363
364 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
365 r = amdgpu_bo_reserve(vm->root.bo, false);
366 if (r)
367 return r;
368
369 resv = vm->root.bo->tbo.base.resv;
370 }
371
372 initial_domain = (u32)(0xffffffff & args->in.domains);
373 retry:
374 r = amdgpu_gem_object_create(adev, size, args->in.alignment,
375 initial_domain,
376 flags, ttm_bo_type_device, resv, &gobj, fpriv->xcp_id + 1);
377 if (r && r != -ERESTARTSYS) {
378 if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
379 flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
380 goto retry;
381 }
382
383 if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
384 initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
385 goto retry;
386 }
387 DRM_DEBUG("Failed to allocate GEM object (%llu, %d, %llu, %d)\n",
388 size, initial_domain, args->in.alignment, r);
389 }
390
391 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
392 if (!r) {
393 struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj);
394
395 abo->parent = amdgpu_bo_ref(vm->root.bo);
396 }
397 amdgpu_bo_unreserve(vm->root.bo);
398 }
399 if (r)
400 return r;
401
402 r = drm_gem_handle_create(filp, gobj, &handle);
403 /* drop reference from allocate - handle holds it now */
404 drm_gem_object_put(gobj);
405 if (r)
406 return r;
407
408 memset(args, 0, sizeof(*args));
409 args->out.handle = handle;
410 return 0;
411 }
412
amdgpu_gem_userptr_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)413 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
414 struct drm_file *filp)
415 {
416 struct ttm_operation_ctx ctx = { true, false };
417 struct amdgpu_device *adev = drm_to_adev(dev);
418 struct drm_amdgpu_gem_userptr *args = data;
419 struct amdgpu_fpriv *fpriv = filp->driver_priv;
420 struct drm_gem_object *gobj;
421 struct hmm_range *range;
422 struct amdgpu_bo *bo;
423 uint32_t handle;
424 int r;
425
426 args->addr = untagged_addr(args->addr);
427
428 if (offset_in_page(args->addr | args->size))
429 return -EINVAL;
430
431 /* reject unknown flag values */
432 if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
433 AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
434 AMDGPU_GEM_USERPTR_REGISTER))
435 return -EINVAL;
436
437 if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
438 !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
439
440 /* if we want to write to it we must install a MMU notifier */
441 return -EACCES;
442 }
443
444 /* create a gem object to contain this object in */
445 r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU,
446 0, ttm_bo_type_device, NULL, &gobj, fpriv->xcp_id + 1);
447 if (r)
448 return r;
449
450 bo = gem_to_amdgpu_bo(gobj);
451 bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT;
452 bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
453 r = amdgpu_ttm_tt_set_userptr(&bo->tbo, args->addr, args->flags);
454 if (r)
455 goto release_object;
456
457 r = amdgpu_hmm_register(bo, args->addr);
458 if (r)
459 goto release_object;
460
461 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
462 r = amdgpu_ttm_tt_get_user_pages(bo, bo->tbo.ttm->pages,
463 &range);
464 if (r)
465 goto release_object;
466
467 r = amdgpu_bo_reserve(bo, true);
468 if (r)
469 goto user_pages_done;
470
471 amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
472 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
473 amdgpu_bo_unreserve(bo);
474 if (r)
475 goto user_pages_done;
476 }
477
478 r = drm_gem_handle_create(filp, gobj, &handle);
479 if (r)
480 goto user_pages_done;
481
482 args->handle = handle;
483
484 user_pages_done:
485 if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE)
486 amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm, range);
487
488 release_object:
489 drm_gem_object_put(gobj);
490
491 return r;
492 }
493
amdgpu_mode_dumb_mmap(struct drm_file * filp,struct drm_device * dev,uint32_t handle,uint64_t * offset_p)494 int amdgpu_mode_dumb_mmap(struct drm_file *filp,
495 struct drm_device *dev,
496 uint32_t handle, uint64_t *offset_p)
497 {
498 struct drm_gem_object *gobj;
499 struct amdgpu_bo *robj;
500
501 gobj = drm_gem_object_lookup(filp, handle);
502 if (!gobj)
503 return -ENOENT;
504
505 robj = gem_to_amdgpu_bo(gobj);
506 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) ||
507 (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) {
508 drm_gem_object_put(gobj);
509 return -EPERM;
510 }
511 *offset_p = amdgpu_bo_mmap_offset(robj);
512 drm_gem_object_put(gobj);
513 return 0;
514 }
515
amdgpu_gem_mmap_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)516 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data,
517 struct drm_file *filp)
518 {
519 union drm_amdgpu_gem_mmap *args = data;
520 uint32_t handle = args->in.handle;
521
522 memset(args, 0, sizeof(*args));
523 return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);
524 }
525
526 /**
527 * amdgpu_gem_timeout - calculate jiffies timeout from absolute value
528 *
529 * @timeout_ns: timeout in ns
530 *
531 * Calculate the timeout in jiffies from an absolute timeout in ns.
532 */
amdgpu_gem_timeout(uint64_t timeout_ns)533 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns)
534 {
535 unsigned long timeout_jiffies;
536 ktime_t timeout;
537
538 /* clamp timeout if it's to large */
539 if (((int64_t)timeout_ns) < 0)
540 return MAX_SCHEDULE_TIMEOUT;
541
542 timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get());
543 if (ktime_to_ns(timeout) < 0)
544 return 0;
545
546 timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout));
547 /* clamp timeout to avoid unsigned-> signed overflow */
548 if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT)
549 return MAX_SCHEDULE_TIMEOUT - 1;
550
551 return timeout_jiffies;
552 }
553
amdgpu_gem_wait_idle_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)554 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
555 struct drm_file *filp)
556 {
557 union drm_amdgpu_gem_wait_idle *args = data;
558 struct drm_gem_object *gobj;
559 struct amdgpu_bo *robj;
560 uint32_t handle = args->in.handle;
561 unsigned long timeout = amdgpu_gem_timeout(args->in.timeout);
562 int r = 0;
563 long ret;
564
565 gobj = drm_gem_object_lookup(filp, handle);
566 if (!gobj)
567 return -ENOENT;
568
569 robj = gem_to_amdgpu_bo(gobj);
570 ret = dma_resv_wait_timeout(robj->tbo.base.resv, DMA_RESV_USAGE_READ,
571 true, timeout);
572
573 /* ret == 0 means not signaled,
574 * ret > 0 means signaled
575 * ret < 0 means interrupted before timeout
576 */
577 if (ret >= 0) {
578 memset(args, 0, sizeof(*args));
579 args->out.status = (ret == 0);
580 } else
581 r = ret;
582
583 drm_gem_object_put(gobj);
584 return r;
585 }
586
amdgpu_gem_metadata_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)587 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
588 struct drm_file *filp)
589 {
590 struct drm_amdgpu_gem_metadata *args = data;
591 struct drm_gem_object *gobj;
592 struct amdgpu_bo *robj;
593 int r = -1;
594
595 DRM_DEBUG("%d\n", args->handle);
596 gobj = drm_gem_object_lookup(filp, args->handle);
597 if (gobj == NULL)
598 return -ENOENT;
599 robj = gem_to_amdgpu_bo(gobj);
600
601 r = amdgpu_bo_reserve(robj, false);
602 if (unlikely(r != 0))
603 goto out;
604
605 if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) {
606 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info);
607 r = amdgpu_bo_get_metadata(robj, args->data.data,
608 sizeof(args->data.data),
609 &args->data.data_size_bytes,
610 &args->data.flags);
611 } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) {
612 if (args->data.data_size_bytes > sizeof(args->data.data)) {
613 r = -EINVAL;
614 goto unreserve;
615 }
616 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info);
617 if (!r)
618 r = amdgpu_bo_set_metadata(robj, args->data.data,
619 args->data.data_size_bytes,
620 args->data.flags);
621 }
622
623 unreserve:
624 amdgpu_bo_unreserve(robj);
625 out:
626 drm_gem_object_put(gobj);
627 return r;
628 }
629
630 /**
631 * amdgpu_gem_va_update_vm -update the bo_va in its VM
632 *
633 * @adev: amdgpu_device pointer
634 * @vm: vm to update
635 * @bo_va: bo_va to update
636 * @operation: map, unmap or clear
637 *
638 * Update the bo_va directly after setting its address. Errors are not
639 * vital here, so they are not reported back to userspace.
640 */
amdgpu_gem_va_update_vm(struct amdgpu_device * adev,struct amdgpu_vm * vm,struct amdgpu_bo_va * bo_va,uint32_t operation)641 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
642 struct amdgpu_vm *vm,
643 struct amdgpu_bo_va *bo_va,
644 uint32_t operation)
645 {
646 int r;
647
648 if (!amdgpu_vm_ready(vm))
649 return;
650
651 r = amdgpu_vm_clear_freed(adev, vm, NULL);
652 if (r)
653 goto error;
654
655 if (operation == AMDGPU_VA_OP_MAP ||
656 operation == AMDGPU_VA_OP_REPLACE) {
657 r = amdgpu_vm_bo_update(adev, bo_va, false);
658 if (r)
659 goto error;
660 }
661
662 r = amdgpu_vm_update_pdes(adev, vm, false);
663
664 error:
665 if (r && r != -ERESTARTSYS)
666 DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
667 }
668
669 /**
670 * amdgpu_gem_va_map_flags - map GEM UAPI flags into hardware flags
671 *
672 * @adev: amdgpu_device pointer
673 * @flags: GEM UAPI flags
674 *
675 * Returns the GEM UAPI flags mapped into hardware for the ASIC.
676 */
amdgpu_gem_va_map_flags(struct amdgpu_device * adev,uint32_t flags)677 uint64_t amdgpu_gem_va_map_flags(struct amdgpu_device *adev, uint32_t flags)
678 {
679 uint64_t pte_flag = 0;
680
681 if (flags & AMDGPU_VM_PAGE_EXECUTABLE)
682 pte_flag |= AMDGPU_PTE_EXECUTABLE;
683 if (flags & AMDGPU_VM_PAGE_READABLE)
684 pte_flag |= AMDGPU_PTE_READABLE;
685 if (flags & AMDGPU_VM_PAGE_WRITEABLE)
686 pte_flag |= AMDGPU_PTE_WRITEABLE;
687 if (flags & AMDGPU_VM_PAGE_PRT)
688 pte_flag |= AMDGPU_PTE_PRT_FLAG(adev);
689 if (flags & AMDGPU_VM_PAGE_NOALLOC)
690 pte_flag |= AMDGPU_PTE_NOALLOC;
691
692 if (adev->gmc.gmc_funcs->map_mtype)
693 pte_flag |= amdgpu_gmc_map_mtype(adev,
694 flags & AMDGPU_VM_MTYPE_MASK);
695
696 return pte_flag;
697 }
698
amdgpu_gem_va_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)699 int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
700 struct drm_file *filp)
701 {
702 const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE |
703 AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE |
704 AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK |
705 AMDGPU_VM_PAGE_NOALLOC;
706 const uint32_t prt_flags = AMDGPU_VM_DELAY_UPDATE |
707 AMDGPU_VM_PAGE_PRT;
708
709 struct drm_amdgpu_gem_va *args = data;
710 struct drm_gem_object *gobj;
711 struct amdgpu_device *adev = drm_to_adev(dev);
712 struct amdgpu_fpriv *fpriv = filp->driver_priv;
713 struct amdgpu_bo *abo;
714 struct amdgpu_bo_va *bo_va;
715 struct drm_exec exec;
716 uint64_t va_flags;
717 uint64_t vm_size;
718 int r = 0;
719
720 if (args->va_address < AMDGPU_VA_RESERVED_BOTTOM) {
721 dev_dbg(dev->dev,
722 "va_address 0x%llx is in reserved area 0x%llx\n",
723 args->va_address, AMDGPU_VA_RESERVED_BOTTOM);
724 return -EINVAL;
725 }
726
727 if (args->va_address >= AMDGPU_GMC_HOLE_START &&
728 args->va_address < AMDGPU_GMC_HOLE_END) {
729 dev_dbg(dev->dev,
730 "va_address 0x%llx is in VA hole 0x%llx-0x%llx\n",
731 args->va_address, AMDGPU_GMC_HOLE_START,
732 AMDGPU_GMC_HOLE_END);
733 return -EINVAL;
734 }
735
736 args->va_address &= AMDGPU_GMC_HOLE_MASK;
737
738 vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
739 vm_size -= AMDGPU_VA_RESERVED_TOP;
740 if (args->va_address + args->map_size > vm_size) {
741 dev_dbg(dev->dev,
742 "va_address 0x%llx is in top reserved area 0x%llx\n",
743 args->va_address + args->map_size, vm_size);
744 return -EINVAL;
745 }
746
747 if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) {
748 dev_dbg(dev->dev, "invalid flags combination 0x%08X\n",
749 args->flags);
750 return -EINVAL;
751 }
752
753 switch (args->operation) {
754 case AMDGPU_VA_OP_MAP:
755 case AMDGPU_VA_OP_UNMAP:
756 case AMDGPU_VA_OP_CLEAR:
757 case AMDGPU_VA_OP_REPLACE:
758 break;
759 default:
760 dev_dbg(dev->dev, "unsupported operation %d\n",
761 args->operation);
762 return -EINVAL;
763 }
764
765 if ((args->operation != AMDGPU_VA_OP_CLEAR) &&
766 !(args->flags & AMDGPU_VM_PAGE_PRT)) {
767 gobj = drm_gem_object_lookup(filp, args->handle);
768 if (gobj == NULL)
769 return -ENOENT;
770 abo = gem_to_amdgpu_bo(gobj);
771 } else {
772 gobj = NULL;
773 abo = NULL;
774 }
775
776 drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT |
777 DRM_EXEC_IGNORE_DUPLICATES, 0);
778 drm_exec_until_all_locked(&exec) {
779 if (gobj) {
780 r = drm_exec_lock_obj(&exec, gobj);
781 drm_exec_retry_on_contention(&exec);
782 if (unlikely(r))
783 goto error;
784 }
785
786 r = amdgpu_vm_lock_pd(&fpriv->vm, &exec, 2);
787 drm_exec_retry_on_contention(&exec);
788 if (unlikely(r))
789 goto error;
790 }
791
792 if (abo) {
793 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo);
794 if (!bo_va) {
795 r = -ENOENT;
796 goto error;
797 }
798 } else if (args->operation != AMDGPU_VA_OP_CLEAR) {
799 bo_va = fpriv->prt_va;
800 } else {
801 bo_va = NULL;
802 }
803
804 switch (args->operation) {
805 case AMDGPU_VA_OP_MAP:
806 va_flags = amdgpu_gem_va_map_flags(adev, args->flags);
807 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
808 args->offset_in_bo, args->map_size,
809 va_flags);
810 break;
811 case AMDGPU_VA_OP_UNMAP:
812 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
813 break;
814
815 case AMDGPU_VA_OP_CLEAR:
816 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm,
817 args->va_address,
818 args->map_size);
819 break;
820 case AMDGPU_VA_OP_REPLACE:
821 va_flags = amdgpu_gem_va_map_flags(adev, args->flags);
822 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address,
823 args->offset_in_bo, args->map_size,
824 va_flags);
825 break;
826 default:
827 break;
828 }
829 if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !adev->debug_vm)
830 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va,
831 args->operation);
832
833 error:
834 drm_exec_fini(&exec);
835 drm_gem_object_put(gobj);
836 return r;
837 }
838
amdgpu_gem_op_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)839 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
840 struct drm_file *filp)
841 {
842 struct amdgpu_device *adev = drm_to_adev(dev);
843 struct drm_amdgpu_gem_op *args = data;
844 struct drm_gem_object *gobj;
845 struct amdgpu_vm_bo_base *base;
846 struct amdgpu_bo *robj;
847 int r;
848
849 gobj = drm_gem_object_lookup(filp, args->handle);
850 if (!gobj)
851 return -ENOENT;
852
853 robj = gem_to_amdgpu_bo(gobj);
854
855 r = amdgpu_bo_reserve(robj, false);
856 if (unlikely(r))
857 goto out;
858
859 switch (args->op) {
860 case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: {
861 struct drm_amdgpu_gem_create_in info;
862 void __user *out = u64_to_user_ptr(args->value);
863
864 info.bo_size = robj->tbo.base.size;
865 info.alignment = robj->tbo.page_alignment << PAGE_SHIFT;
866 info.domains = robj->preferred_domains;
867 info.domain_flags = robj->flags;
868 amdgpu_bo_unreserve(robj);
869 if (copy_to_user(out, &info, sizeof(info)))
870 r = -EFAULT;
871 break;
872 }
873 case AMDGPU_GEM_OP_SET_PLACEMENT:
874 if (robj->tbo.base.import_attach &&
875 args->value & AMDGPU_GEM_DOMAIN_VRAM) {
876 r = -EINVAL;
877 amdgpu_bo_unreserve(robj);
878 break;
879 }
880 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) {
881 r = -EPERM;
882 amdgpu_bo_unreserve(robj);
883 break;
884 }
885 for (base = robj->vm_bo; base; base = base->next)
886 if (amdgpu_xgmi_same_hive(amdgpu_ttm_adev(robj->tbo.bdev),
887 amdgpu_ttm_adev(base->vm->root.bo->tbo.bdev))) {
888 r = -EINVAL;
889 amdgpu_bo_unreserve(robj);
890 goto out;
891 }
892
893
894 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM |
895 AMDGPU_GEM_DOMAIN_GTT |
896 AMDGPU_GEM_DOMAIN_CPU);
897 robj->allowed_domains = robj->preferred_domains;
898 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
899 robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
900
901 if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
902 amdgpu_vm_bo_invalidate(adev, robj, true);
903
904 amdgpu_bo_unreserve(robj);
905 break;
906 default:
907 amdgpu_bo_unreserve(robj);
908 r = -EINVAL;
909 }
910
911 out:
912 drm_gem_object_put(gobj);
913 return r;
914 }
915
amdgpu_gem_align_pitch(struct amdgpu_device * adev,int width,int cpp,bool tiled)916 static int amdgpu_gem_align_pitch(struct amdgpu_device *adev,
917 int width,
918 int cpp,
919 bool tiled)
920 {
921 int aligned = width;
922 int pitch_mask = 0;
923
924 switch (cpp) {
925 case 1:
926 pitch_mask = 255;
927 break;
928 case 2:
929 pitch_mask = 127;
930 break;
931 case 3:
932 case 4:
933 pitch_mask = 63;
934 break;
935 }
936
937 aligned += pitch_mask;
938 aligned &= ~pitch_mask;
939 return aligned * cpp;
940 }
941
amdgpu_mode_dumb_create(struct drm_file * file_priv,struct drm_device * dev,struct drm_mode_create_dumb * args)942 int amdgpu_mode_dumb_create(struct drm_file *file_priv,
943 struct drm_device *dev,
944 struct drm_mode_create_dumb *args)
945 {
946 struct amdgpu_device *adev = drm_to_adev(dev);
947 struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
948 struct drm_gem_object *gobj;
949 uint32_t handle;
950 u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
951 AMDGPU_GEM_CREATE_CPU_GTT_USWC |
952 AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
953 u32 domain;
954 int r;
955
956 /*
957 * The buffer returned from this function should be cleared, but
958 * it can only be done if the ring is enabled or we'll fail to
959 * create the buffer.
960 */
961 if (adev->mman.buffer_funcs_enabled)
962 flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED;
963
964 args->pitch = amdgpu_gem_align_pitch(adev, args->width,
965 DIV_ROUND_UP(args->bpp, 8), 0);
966 args->size = (u64)args->pitch * args->height;
967 args->size = ALIGN(args->size, PAGE_SIZE);
968 domain = amdgpu_bo_get_preferred_domain(adev,
969 amdgpu_display_supported_domains(adev, flags));
970 r = amdgpu_gem_object_create(adev, args->size, 0, domain, flags,
971 ttm_bo_type_device, NULL, &gobj, fpriv->xcp_id + 1);
972 if (r)
973 return -ENOMEM;
974
975 r = drm_gem_handle_create(file_priv, gobj, &handle);
976 /* drop reference from allocate - handle holds it now */
977 drm_gem_object_put(gobj);
978 if (r)
979 return r;
980
981 args->handle = handle;
982 return 0;
983 }
984
985 #if defined(CONFIG_DEBUG_FS)
amdgpu_debugfs_gem_info_show(struct seq_file * m,void * unused)986 static int amdgpu_debugfs_gem_info_show(struct seq_file *m, void *unused)
987 {
988 struct amdgpu_device *adev = m->private;
989 struct drm_device *dev = adev_to_drm(adev);
990 struct drm_file *file;
991 int r;
992
993 r = mutex_lock_interruptible(&dev->filelist_mutex);
994 if (r)
995 return r;
996
997 list_for_each_entry(file, &dev->filelist, lhead) {
998 struct task_struct *task;
999 struct drm_gem_object *gobj;
1000 struct pid *pid;
1001 int id;
1002
1003 /*
1004 * Although we have a valid reference on file->pid, that does
1005 * not guarantee that the task_struct who called get_pid() is
1006 * still alive (e.g. get_pid(current) => fork() => exit()).
1007 * Therefore, we need to protect this ->comm access using RCU.
1008 */
1009 rcu_read_lock();
1010 pid = rcu_dereference(file->pid);
1011 task = pid_task(pid, PIDTYPE_TGID);
1012 seq_printf(m, "pid %8d command %s:\n", pid_nr(pid),
1013 task ? task->comm : "<unknown>");
1014 rcu_read_unlock();
1015
1016 spin_lock(&file->table_lock);
1017 idr_for_each_entry(&file->object_idr, gobj, id) {
1018 struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj);
1019
1020 amdgpu_bo_print_info(id, bo, m);
1021 }
1022 spin_unlock(&file->table_lock);
1023 }
1024
1025 mutex_unlock(&dev->filelist_mutex);
1026 return 0;
1027 }
1028
1029 DEFINE_SHOW_ATTRIBUTE(amdgpu_debugfs_gem_info);
1030
1031 #endif
1032
amdgpu_debugfs_gem_init(struct amdgpu_device * adev)1033 void amdgpu_debugfs_gem_init(struct amdgpu_device *adev)
1034 {
1035 #if defined(CONFIG_DEBUG_FS)
1036 struct drm_minor *minor = adev_to_drm(adev)->primary;
1037 struct dentry *root = minor->debugfs_root;
1038
1039 debugfs_create_file("amdgpu_gem_info", 0444, root, adev,
1040 &amdgpu_debugfs_gem_info_fops);
1041 #endif
1042 }
1043