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