drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c

   1 /*
   2  * Copyright 2008 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  * Copyright 2009 Jerome Glisse.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors: Dave Airlie
  25  *          Alex Deucher
  26  *          Jerome Glisse
  27  */
  28 #include <linux/ktime.h>
  29 #include <linux/module.h>
  30 #include <linux/pagemap.h>
  31 #include <linux/pci.h>
  32 #include <linux/dma-buf.h>
  33
  34 #include <drm/amdgpu_drm.h>
  35 #include <drm/drm_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
  46 static const struct drm_gem_object_funcs amdgpu_gem_object_funcs;
  47
  48 static 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
  76 unlock:
  77         dma_resv_unlock(bo->base.resv);
  78         return ret;
  79 }
  80
  81 static 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
  88 static 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
  98 int 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
 133 void 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  */
 161 static 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         }
 190         amdgpu_bo_unreserve(abo);
 191         return 0;
 192 }
 193
 194 static void amdgpu_gem_object_close(struct drm_gem_object *obj,
 195                                     struct drm_file *file_priv)
 196 {
 197         struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
 198         struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 199         struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
 200         struct amdgpu_vm *vm = &fpriv->vm;
 201
 202         struct dma_fence *fence = NULL;
 203         struct amdgpu_bo_va *bo_va;
 204         struct drm_exec exec;
 205         long r;
 206
 207         drm_exec_init(&exec, DRM_EXEC_IGNORE_DUPLICATES);
 208         drm_exec_until_all_locked(&exec) {
 209                 r = drm_exec_prepare_obj(&exec, &bo->tbo.base, 1);
 210                 drm_exec_retry_on_contention(&exec);
 211                 if (unlikely(r))
 212                         goto out_unlock;
 213
 214                 r = amdgpu_vm_lock_pd(vm, &exec, 0);
 215                 drm_exec_retry_on_contention(&exec);
 216                 if (unlikely(r))
 217                         goto out_unlock;
 218         }
 219
 220         bo_va = amdgpu_vm_bo_find(vm, bo);
 221         if (!bo_va || --bo_va->ref_count)
 222                 goto out_unlock;
 223
 224         amdgpu_vm_bo_del(adev, bo_va);
 225         if (!amdgpu_vm_ready(vm))
 226                 goto out_unlock;
 227
 228         r = amdgpu_vm_clear_freed(adev, vm, &fence);
 229         if (unlikely(r < 0))
 230                 dev_err(adev->dev, "failed to clear page "
 231                         "tables on GEM object close (%ld)\n", r);
 232         if (r || !fence)
 233                 goto out_unlock;
 234
 235         amdgpu_bo_fence(bo, fence, true);
 236         dma_fence_put(fence);
 237
 238 out_unlock:
 239         if (r)
 240                 dev_err(adev->dev, "leaking bo va (%ld)\n", r);
 241         drm_exec_fini(&exec);
 242 }
 243
 244 static int amdgpu_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
 245 {
 246         struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
 247
 248         if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm))
 249                 return -EPERM;
 250         if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
 251                 return -EPERM;
 252
 253         /* Workaround for Thunk bug creating PROT_NONE,MAP_PRIVATE mappings
 254          * for debugger access to invisible VRAM. Should have used MAP_SHARED
 255          * instead. Clearing VM_MAYWRITE prevents the mapping from ever
 256          * becoming writable and makes is_cow_mapping(vm_flags) false.
 257          */
 258         if (is_cow_mapping(vma->vm_flags) &&
 259             !(vma->vm_flags & VM_ACCESS_FLAGS))
 260                 vm_flags_clear(vma, VM_MAYWRITE);
 261
 262         return drm_gem_ttm_mmap(obj, vma);
 263 }
 264
 265 static const struct drm_gem_object_funcs amdgpu_gem_object_funcs = {
 266         .free = amdgpu_gem_object_free,
 267         .open = amdgpu_gem_object_open,
 268         .close = amdgpu_gem_object_close,
 269         .export = amdgpu_gem_prime_export,
 270         .vmap = drm_gem_ttm_vmap,
 271         .vunmap = drm_gem_ttm_vunmap,
 272         .mmap = amdgpu_gem_object_mmap,
 273         .vm_ops = &amdgpu_gem_vm_ops,
 274 };
 275
 276 /*
 277  * GEM ioctls.
 278  */
 279 int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
 280                             struct drm_file *filp)
 281 {
 282         struct amdgpu_device *adev = drm_to_adev(dev);
 283         struct amdgpu_fpriv *fpriv = filp->driver_priv;
 284         struct amdgpu_vm *vm = &fpriv->vm;
 285         union drm_amdgpu_gem_create *args = data;
 286         uint64_t flags = args->in.domain_flags;
 287         uint64_t size = args->in.bo_size;
 288         struct dma_resv *resv = NULL;
 289         struct drm_gem_object *gobj;
 290         uint32_t handle, initial_domain;
 291         int r;
 292
 293         /* reject invalid gem flags */
 294         if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
 295                       AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
 296                       AMDGPU_GEM_CREATE_CPU_GTT_USWC |
 297                       AMDGPU_GEM_CREATE_VRAM_CLEARED |
 298                       AMDGPU_GEM_CREATE_VM_ALWAYS_VALID |
 299                       AMDGPU_GEM_CREATE_EXPLICIT_SYNC |
 300                       AMDGPU_GEM_CREATE_ENCRYPTED |
 301                       AMDGPU_GEM_CREATE_DISCARDABLE))
 302                 return -EINVAL;
 303
 304         /* reject invalid gem domains */
 305         if (args->in.domains & ~AMDGPU_GEM_DOMAIN_MASK)
 306                 return -EINVAL;
 307
 308         if (!amdgpu_is_tmz(adev) && (flags & AMDGPU_GEM_CREATE_ENCRYPTED)) {
 309                 DRM_NOTE_ONCE("Cannot allocate secure buffer since TMZ is disabled\n");
 310                 return -EINVAL;
 311         }
 312
 313         /* create a gem object to contain this object in */
 314         if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
 315             AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
 316                 if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
 317                         /* if gds bo is created from user space, it must be
 318                          * passed to bo list
 319                          */
 320                         DRM_ERROR("GDS bo cannot be per-vm-bo\n");
 321                         return -EINVAL;
 322                 }
 323                 flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
 324         }
 325
 326         if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
 327                 r = amdgpu_bo_reserve(vm->root.bo, false);
 328                 if (r)
 329                         return r;
 330
 331                 resv = vm->root.bo->tbo.base.resv;
 332         }
 333
 334         initial_domain = (u32)(0xffffffff & args->in.domains);
 335 retry:
 336         r = amdgpu_gem_object_create(adev, size, args->in.alignment,
 337                                      initial_domain,
 338                                      flags, ttm_bo_type_device, resv, &gobj, fpriv->xcp_id + 1);
 339         if (r && r != -ERESTARTSYS) {
 340                 if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
 341                         flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
 342                         goto retry;
 343                 }
 344
 345                 if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
 346                         initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
 347                         goto retry;
 348                 }
 349                 DRM_DEBUG("Failed to allocate GEM object (%llu, %d, %llu, %d)\n",
 350                                 size, initial_domain, args->in.alignment, r);
 351         }
 352
 353         if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
 354                 if (!r) {
 355                         struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj);
 356
 357                         abo->parent = amdgpu_bo_ref(vm->root.bo);
 358                 }
 359                 amdgpu_bo_unreserve(vm->root.bo);
 360         }
 361         if (r)
 362                 return r;
 363
 364         r = drm_gem_handle_create(filp, gobj, &handle);
 365         /* drop reference from allocate - handle holds it now */
 366         drm_gem_object_put(gobj);
 367         if (r)
 368                 return r;
 369
 370         memset(args, 0, sizeof(*args));
 371         args->out.handle = handle;
 372         return 0;
 373 }
 374
 375 int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data,
 376                              struct drm_file *filp)
 377 {
 378         struct ttm_operation_ctx ctx = { true, false };
 379         struct amdgpu_device *adev = drm_to_adev(dev);
 380         struct drm_amdgpu_gem_userptr *args = data;
 381         struct amdgpu_fpriv *fpriv = filp->driver_priv;
 382         struct drm_gem_object *gobj;
 383         struct hmm_range *range;
 384         struct amdgpu_bo *bo;
 385         uint32_t handle;
 386         int r;
 387
 388         args->addr = untagged_addr(args->addr);
 389
 390         if (offset_in_page(args->addr | args->size))
 391                 return -EINVAL;
 392
 393         /* reject unknown flag values */
 394         if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY |
 395             AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE |
 396             AMDGPU_GEM_USERPTR_REGISTER))
 397                 return -EINVAL;
 398
 399         if (!(args->flags & AMDGPU_GEM_USERPTR_READONLY) &&
 400              !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) {
 401
 402                 /* if we want to write to it we must install a MMU notifier */
 403                 return -EACCES;
 404         }
 405
 406         /* create a gem object to contain this object in */
 407         r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU,
 408                                      0, ttm_bo_type_device, NULL, &gobj, fpriv->xcp_id + 1);
 409         if (r)
 410                 return r;
 411
 412         bo = gem_to_amdgpu_bo(gobj);
 413         bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT;
 414         bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
 415         r = amdgpu_ttm_tt_set_userptr(&bo->tbo, args->addr, args->flags);
 416         if (r)
 417                 goto release_object;
 418
 419         r = amdgpu_hmm_register(bo, args->addr);
 420         if (r)
 421                 goto release_object;
 422
 423         if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) {
 424                 r = amdgpu_ttm_tt_get_user_pages(bo, bo->tbo.ttm->pages,
 425                                                  &range);
 426                 if (r)
 427                         goto release_object;
 428
 429                 r = amdgpu_bo_reserve(bo, true);
 430                 if (r)
 431                         goto user_pages_done;
 432
 433                 amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
 434                 r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 435                 amdgpu_bo_unreserve(bo);
 436                 if (r)
 437                         goto user_pages_done;
 438         }
 439
 440         r = drm_gem_handle_create(filp, gobj, &handle);
 441         if (r)
 442                 goto user_pages_done;
 443
 444         args->handle = handle;
 445
 446 user_pages_done:
 447         if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE)
 448                 amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm, range);
 449
 450 release_object:
 451         drm_gem_object_put(gobj);
 452
 453         return r;
 454 }
 455
 456 int amdgpu_mode_dumb_mmap(struct drm_file *filp,
 457                           struct drm_device *dev,
 458                           uint32_t handle, uint64_t *offset_p)
 459 {
 460         struct drm_gem_object *gobj;
 461         struct amdgpu_bo *robj;
 462
 463         gobj = drm_gem_object_lookup(filp, handle);
 464         if (gobj == NULL) {
 465                 return -ENOENT;
 466         }
 467         robj = gem_to_amdgpu_bo(gobj);
 468         if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm) ||
 469             (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) {
 470                 drm_gem_object_put(gobj);
 471                 return -EPERM;
 472         }
 473         *offset_p = amdgpu_bo_mmap_offset(robj);
 474         drm_gem_object_put(gobj);
 475         return 0;
 476 }
 477
 478 int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data,
 479                           struct drm_file *filp)
 480 {
 481         union drm_amdgpu_gem_mmap *args = data;
 482         uint32_t handle = args->in.handle;
 483         memset(args, 0, sizeof(*args));
 484         return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);
 485 }
 486
 487 /**
 488  * amdgpu_gem_timeout - calculate jiffies timeout from absolute value
 489  *
 490  * @timeout_ns: timeout in ns
 491  *
 492  * Calculate the timeout in jiffies from an absolute timeout in ns.
 493  */
 494 unsigned long amdgpu_gem_timeout(uint64_t timeout_ns)
 495 {
 496         unsigned long timeout_jiffies;
 497         ktime_t timeout;
 498
 499         /* clamp timeout if it's to large */
 500         if (((int64_t)timeout_ns) < 0)
 501                 return MAX_SCHEDULE_TIMEOUT;
 502
 503         timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get());
 504         if (ktime_to_ns(timeout) < 0)
 505                 return 0;
 506
 507         timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout));
 508         /*  clamp timeout to avoid unsigned-> signed overflow */
 509         if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT )
 510                 return MAX_SCHEDULE_TIMEOUT - 1;
 511
 512         return timeout_jiffies;
 513 }
 514
 515 int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 516                               struct drm_file *filp)
 517 {
 518         union drm_amdgpu_gem_wait_idle *args = data;
 519         struct drm_gem_object *gobj;
 520         struct amdgpu_bo *robj;
 521         uint32_t handle = args->in.handle;
 522         unsigned long timeout = amdgpu_gem_timeout(args->in.timeout);
 523         int r = 0;
 524         long ret;
 525
 526         gobj = drm_gem_object_lookup(filp, handle);
 527         if (gobj == NULL) {
 528                 return -ENOENT;
 529         }
 530         robj = gem_to_amdgpu_bo(gobj);
 531         ret = dma_resv_wait_timeout(robj->tbo.base.resv, DMA_RESV_USAGE_READ,
 532                                     true, timeout);
 533
 534         /* ret == 0 means not signaled,
 535          * ret > 0 means signaled
 536          * ret < 0 means interrupted before timeout
 537          */
 538         if (ret >= 0) {
 539                 memset(args, 0, sizeof(*args));
 540                 args->out.status = (ret == 0);
 541         } else
 542                 r = ret;
 543
 544         drm_gem_object_put(gobj);
 545         return r;
 546 }
 547
 548 int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
 549                                 struct drm_file *filp)
 550 {
 551         struct drm_amdgpu_gem_metadata *args = data;
 552         struct drm_gem_object *gobj;
 553         struct amdgpu_bo *robj;
 554         int r = -1;
 555
 556         DRM_DEBUG("%d \n", args->handle);
 557         gobj = drm_gem_object_lookup(filp, args->handle);
 558         if (gobj == NULL)
 559                 return -ENOENT;
 560         robj = gem_to_amdgpu_bo(gobj);
 561
 562         r = amdgpu_bo_reserve(robj, false);
 563         if (unlikely(r != 0))
 564                 goto out;
 565
 566         if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) {
 567                 amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info);
 568                 r = amdgpu_bo_get_metadata(robj, args->data.data,
 569                                            sizeof(args->data.data),
 570                                            &args->data.data_size_bytes,
 571                                            &args->data.flags);
 572         } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) {
 573                 if (args->data.data_size_bytes > sizeof(args->data.data)) {
 574                         r = -EINVAL;
 575                         goto unreserve;
 576                 }
 577                 r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info);
 578                 if (!r)
 579                         r = amdgpu_bo_set_metadata(robj, args->data.data,
 580                                                    args->data.data_size_bytes,
 581                                                    args->data.flags);
 582         }
 583
 584 unreserve:
 585         amdgpu_bo_unreserve(robj);
 586 out:
 587         drm_gem_object_put(gobj);
 588         return r;
 589 }
 590
 591 /**
 592  * amdgpu_gem_va_update_vm -update the bo_va in its VM
 593  *
 594  * @adev: amdgpu_device pointer
 595  * @vm: vm to update
 596  * @bo_va: bo_va to update
 597  * @operation: map, unmap or clear
 598  *
 599  * Update the bo_va directly after setting its address. Errors are not
 600  * vital here, so they are not reported back to userspace.
 601  */
 602 static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
 603                                     struct amdgpu_vm *vm,
 604                                     struct amdgpu_bo_va *bo_va,
 605                                     uint32_t operation)
 606 {
 607         int r;
 608
 609         if (!amdgpu_vm_ready(vm))
 610                 return;
 611
 612         r = amdgpu_vm_clear_freed(adev, vm, NULL);
 613         if (r)
 614                 goto error;
 615
 616         if (operation == AMDGPU_VA_OP_MAP ||
 617             operation == AMDGPU_VA_OP_REPLACE) {
 618                 r = amdgpu_vm_bo_update(adev, bo_va, false);
 619                 if (r)
 620                         goto error;
 621         }
 622
 623         r = amdgpu_vm_update_pdes(adev, vm, false);
 624
 625 error:
 626         if (r && r != -ERESTARTSYS)
 627                 DRM_ERROR("Couldn't update BO_VA (%d)\n", r);
 628 }
 629
 630 /**
 631  * amdgpu_gem_va_map_flags - map GEM UAPI flags into hardware flags
 632  *
 633  * @adev: amdgpu_device pointer
 634  * @flags: GEM UAPI flags
 635  *
 636  * Returns the GEM UAPI flags mapped into hardware for the ASIC.
 637  */
 638 uint64_t amdgpu_gem_va_map_flags(struct amdgpu_device *adev, uint32_t flags)
 639 {
 640         uint64_t pte_flag = 0;
 641
 642         if (flags & AMDGPU_VM_PAGE_EXECUTABLE)
 643                 pte_flag |= AMDGPU_PTE_EXECUTABLE;
 644         if (flags & AMDGPU_VM_PAGE_READABLE)
 645                 pte_flag |= AMDGPU_PTE_READABLE;
 646         if (flags & AMDGPU_VM_PAGE_WRITEABLE)
 647                 pte_flag |= AMDGPU_PTE_WRITEABLE;
 648         if (flags & AMDGPU_VM_PAGE_PRT)
 649                 pte_flag |= AMDGPU_PTE_PRT;
 650         if (flags & AMDGPU_VM_PAGE_NOALLOC)
 651                 pte_flag |= AMDGPU_PTE_NOALLOC;
 652
 653         if (adev->gmc.gmc_funcs->map_mtype)
 654                 pte_flag |= amdgpu_gmc_map_mtype(adev,
 655                                                  flags & AMDGPU_VM_MTYPE_MASK);
 656
 657         return pte_flag;
 658 }
 659
 660 int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
 661                           struct drm_file *filp)
 662 {
 663         const uint32_t valid_flags = AMDGPU_VM_DELAY_UPDATE |
 664                 AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE |
 665                 AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_MASK |
 666                 AMDGPU_VM_PAGE_NOALLOC;
 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 drm_exec exec;
 677         uint64_t va_flags;
 678         uint64_t vm_size;
 679         int r = 0;
 680
 681         if (args->va_address < AMDGPU_VA_RESERVED_SIZE) {
 682                 dev_dbg(dev->dev,
 683                         "va_address 0x%LX is in reserved area 0x%LX\n",
 684                         args->va_address, AMDGPU_VA_RESERVED_SIZE);
 685                 return -EINVAL;
 686         }
 687
 688         if (args->va_address >= AMDGPU_GMC_HOLE_START &&
 689             args->va_address < AMDGPU_GMC_HOLE_END) {
 690                 dev_dbg(dev->dev,
 691                         "va_address 0x%LX is in VA hole 0x%LX-0x%LX\n",
 692                         args->va_address, AMDGPU_GMC_HOLE_START,
 693                         AMDGPU_GMC_HOLE_END);
 694                 return -EINVAL;
 695         }
 696
 697         args->va_address &= AMDGPU_GMC_HOLE_MASK;
 698
 699         vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
 700         vm_size -= AMDGPU_VA_RESERVED_SIZE;
 701         if (args->va_address + args->map_size > vm_size) {
 702                 dev_dbg(dev->dev,
 703                         "va_address 0x%llx is in top reserved area 0x%llx\n",
 704                         args->va_address + args->map_size, vm_size);
 705                 return -EINVAL;
 706         }
 707
 708         if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) {
 709                 dev_dbg(dev->dev, "invalid flags combination 0x%08X\n",
 710                         args->flags);
 711                 return -EINVAL;
 712         }
 713
 714         switch (args->operation) {
 715         case AMDGPU_VA_OP_MAP:
 716         case AMDGPU_VA_OP_UNMAP:
 717         case AMDGPU_VA_OP_CLEAR:
 718         case AMDGPU_VA_OP_REPLACE:
 719                 break;
 720         default:
 721                 dev_dbg(dev->dev, "unsupported operation %d\n",
 722                         args->operation);
 723                 return -EINVAL;
 724         }
 725
 726         if ((args->operation != AMDGPU_VA_OP_CLEAR) &&
 727             !(args->flags & AMDGPU_VM_PAGE_PRT)) {
 728                 gobj = drm_gem_object_lookup(filp, args->handle);
 729                 if (gobj == NULL)
 730                         return -ENOENT;
 731                 abo = gem_to_amdgpu_bo(gobj);
 732         } else {
 733                 gobj = NULL;
 734                 abo = NULL;
 735         }
 736
 737         drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT |
 738                       DRM_EXEC_IGNORE_DUPLICATES);
 739         drm_exec_until_all_locked(&exec) {
 740                 if (gobj) {
 741                         r = drm_exec_lock_obj(&exec, gobj);
 742                         drm_exec_retry_on_contention(&exec);
 743                         if (unlikely(r))
 744                                 goto error;
 745                 }
 746
 747                 r = amdgpu_vm_lock_pd(&fpriv->vm, &exec, 2);
 748                 drm_exec_retry_on_contention(&exec);
 749                 if (unlikely(r))
 750                         goto error;
 751         }
 752
 753         if (abo) {
 754                 bo_va = amdgpu_vm_bo_find(&fpriv->vm, abo);
 755                 if (!bo_va) {
 756                         r = -ENOENT;
 757                         goto error;
 758                 }
 759         } else if (args->operation != AMDGPU_VA_OP_CLEAR) {
 760                 bo_va = fpriv->prt_va;
 761         } else {
 762                 bo_va = NULL;
 763         }
 764
 765         switch (args->operation) {
 766         case AMDGPU_VA_OP_MAP:
 767                 va_flags = amdgpu_gem_va_map_flags(adev, args->flags);
 768                 r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
 769                                      args->offset_in_bo, args->map_size,
 770                                      va_flags);
 771                 break;
 772         case AMDGPU_VA_OP_UNMAP:
 773                 r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
 774                 break;
 775
 776         case AMDGPU_VA_OP_CLEAR:
 777                 r = amdgpu_vm_bo_clear_mappings(adev, &fpriv->vm,
 778                                                 args->va_address,
 779                                                 args->map_size);
 780                 break;
 781         case AMDGPU_VA_OP_REPLACE:
 782                 va_flags = amdgpu_gem_va_map_flags(adev, args->flags);
 783                 r = amdgpu_vm_bo_replace_map(adev, bo_va, args->va_address,
 784                                              args->offset_in_bo, args->map_size,
 785                                              va_flags);
 786                 break;
 787         default:
 788                 break;
 789         }
 790         if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE) && !amdgpu_vm_debug)
 791                 amdgpu_gem_va_update_vm(adev, &fpriv->vm, bo_va,
 792                                         args->operation);
 793
 794 error:
 795         drm_exec_fini(&exec);
 796         drm_gem_object_put(gobj);
 797         return r;
 798 }
 799
 800 int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
 801                         struct drm_file *filp)
 802 {
 803         struct amdgpu_device *adev = drm_to_adev(dev);
 804         struct drm_amdgpu_gem_op *args = data;
 805         struct drm_gem_object *gobj;
 806         struct amdgpu_vm_bo_base *base;
 807         struct amdgpu_bo *robj;
 808         int r;
 809
 810         gobj = drm_gem_object_lookup(filp, args->handle);
 811         if (gobj == NULL) {
 812                 return -ENOENT;
 813         }
 814         robj = gem_to_amdgpu_bo(gobj);
 815
 816         r = amdgpu_bo_reserve(robj, false);
 817         if (unlikely(r))
 818                 goto out;
 819
 820         switch (args->op) {
 821         case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: {
 822                 struct drm_amdgpu_gem_create_in info;
 823                 void __user *out = u64_to_user_ptr(args->value);
 824
 825                 info.bo_size = robj->tbo.base.size;
 826                 info.alignment = robj->tbo.page_alignment << PAGE_SHIFT;
 827                 info.domains = robj->preferred_domains;
 828                 info.domain_flags = robj->flags;
 829                 amdgpu_bo_unreserve(robj);
 830                 if (copy_to_user(out, &info, sizeof(info)))
 831                         r = -EFAULT;
 832                 break;
 833         }
 834         case AMDGPU_GEM_OP_SET_PLACEMENT:
 835                 if (robj->tbo.base.import_attach &&
 836                     args->value & AMDGPU_GEM_DOMAIN_VRAM) {
 837                         r = -EINVAL;
 838                         amdgpu_bo_unreserve(robj);
 839                         break;
 840                 }
 841                 if (amdgpu_ttm_tt_get_usermm(robj->tbo.ttm)) {
 842                         r = -EPERM;
 843                         amdgpu_bo_unreserve(robj);
 844                         break;
 845                 }
 846                 for (base = robj->vm_bo; base; base = base->next)
 847                         if (amdgpu_xgmi_same_hive(amdgpu_ttm_adev(robj->tbo.bdev),
 848                                 amdgpu_ttm_adev(base->vm->root.bo->tbo.bdev))) {
 849                                 r = -EINVAL;
 850                                 amdgpu_bo_unreserve(robj);
 851                                 goto out;
 852                         }
 853
 854
 855                 robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM |
 856                                                         AMDGPU_GEM_DOMAIN_GTT |
 857                                                         AMDGPU_GEM_DOMAIN_CPU);
 858                 robj->allowed_domains = robj->preferred_domains;
 859                 if (robj->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
 860                         robj->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
 861
 862                 if (robj->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID)
 863                         amdgpu_vm_bo_invalidate(adev, robj, true);
 864
 865                 amdgpu_bo_unreserve(robj);
 866                 break;
 867         default:
 868                 amdgpu_bo_unreserve(robj);
 869                 r = -EINVAL;
 870         }
 871
 872 out:
 873         drm_gem_object_put(gobj);
 874         return r;
 875 }
 876
 877 static int amdgpu_gem_align_pitch(struct amdgpu_device *adev,
 878                                   int width,
 879                                   int cpp,
 880                                   bool tiled)
 881 {
 882         int aligned = width;
 883         int pitch_mask = 0;
 884
 885         switch (cpp) {
 886         case 1:
 887                 pitch_mask = 255;
 888                 break;
 889         case 2:
 890                 pitch_mask = 127;
 891                 break;
 892         case 3:
 893         case 4:
 894                 pitch_mask = 63;
 895                 break;
 896         }
 897
 898         aligned += pitch_mask;
 899         aligned &= ~pitch_mask;
 900         return aligned * cpp;
 901 }
 902
 903 int amdgpu_mode_dumb_create(struct drm_file *file_priv,
 904                             struct drm_device *dev,
 905                             struct drm_mode_create_dumb *args)
 906 {
 907         struct amdgpu_device *adev = drm_to_adev(dev);
 908         struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
 909         struct drm_gem_object *gobj;
 910         uint32_t handle;
 911         u64 flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
 912                     AMDGPU_GEM_CREATE_CPU_GTT_USWC |
 913                     AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
 914         u32 domain;
 915         int r;
 916
 917         /*
 918          * The buffer returned from this function should be cleared, but
 919          * it can only be done if the ring is enabled or we'll fail to
 920          * create the buffer.
 921          */
 922         if (adev->mman.buffer_funcs_enabled)
 923                 flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED;
 924
 925         args->pitch = amdgpu_gem_align_pitch(adev, args->width,
 926                                              DIV_ROUND_UP(args->bpp, 8), 0);
 927         args->size = (u64)args->pitch * args->height;
 928         args->size = ALIGN(args->size, PAGE_SIZE);
 929         domain = amdgpu_bo_get_preferred_domain(adev,
 930                                 amdgpu_display_supported_domains(adev, flags));
 931         r = amdgpu_gem_object_create(adev, args->size, 0, domain, flags,
 932                                      ttm_bo_type_device, NULL, &gobj, fpriv->xcp_id + 1);
 933         if (r)
 934                 return -ENOMEM;
 935
 936         r = drm_gem_handle_create(file_priv, gobj, &handle);
 937         /* drop reference from allocate - handle holds it now */
 938         drm_gem_object_put(gobj);
 939         if (r) {
 940                 return r;
 941         }
 942         args->handle = handle;
 943         return 0;
 944 }
 945
 946 #if defined(CONFIG_DEBUG_FS)
 947 static int amdgpu_debugfs_gem_info_show(struct seq_file *m, void *unused)
 948 {
 949         struct amdgpu_device *adev = m->private;
 950         struct drm_device *dev = adev_to_drm(adev);
 951         struct drm_file *file;
 952         int r;
 953
 954         r = mutex_lock_interruptible(&dev->filelist_mutex);
 955         if (r)
 956                 return r;
 957
 958         list_for_each_entry(file, &dev->filelist, lhead) {
 959                 struct task_struct *task;
 960                 struct drm_gem_object *gobj;
 961                 int id;
 962
 963                 /*
 964                  * Although we have a valid reference on file->pid, that does
 965                  * not guarantee that the task_struct who called get_pid() is
 966                  * still alive (e.g. get_pid(current) => fork() => exit()).
 967                  * Therefore, we need to protect this ->comm access using RCU.
 968                  */
 969                 rcu_read_lock();
 970                 task = pid_task(file->pid, PIDTYPE_TGID);
 971                 seq_printf(m, "pid %8d command %s:\n", pid_nr(file->pid),
 972                            task ? task->comm : "<unknown>");
 973                 rcu_read_unlock();
 974
 975                 spin_lock(&file->table_lock);
 976                 idr_for_each_entry(&file->object_idr, gobj, id) {
 977                         struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj);
 978
 979                         amdgpu_bo_print_info(id, bo, m);
 980                 }
 981                 spin_unlock(&file->table_lock);
 982         }
 983
 984         mutex_unlock(&dev->filelist_mutex);
 985         return 0;
 986 }
 987
 988 DEFINE_SHOW_ATTRIBUTE(amdgpu_debugfs_gem_info);
 989
 990 #endif
 991
 992 void amdgpu_debugfs_gem_init(struct amdgpu_device *adev)
 993 {
 994 #if defined(CONFIG_DEBUG_FS)
 995         struct drm_minor *minor = adev_to_drm(adev)->primary;
 996         struct dentry *root = minor->debugfs_root;
 997
 998         debugfs_create_file("amdgpu_gem_info", 0444, root, adev,
 999                             &amdgpu_debugfs_gem_info_fops);
1000 #endif
1001 }