drivers/gpu/drm/radeon/radeon_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 "drmP.h"
  29 #include "drm.h"
  30 #include "radeon_drm.h"
  31 #include "radeon.h"
  32
  33 int radeon_gem_object_init(struct drm_gem_object *obj)
  34 {
  35         BUG();
  36
  37         return 0;
  38 }
  39
  40 void radeon_gem_object_free(struct drm_gem_object *gobj)
  41 {
  42         struct radeon_bo *robj = gem_to_radeon_bo(gobj);
  43
  44         if (robj) {
  45                 if (robj->gem_base.import_attach)
  46                         drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg);
  47                 radeon_bo_unref(&robj);
  48         }
  49 }
  50
  51 int radeon_gem_object_create(struct radeon_device *rdev, int size,
  52                                 int alignment, int initial_domain,
  53                                 bool discardable, bool kernel,
  54                                 struct drm_gem_object **obj)
  55 {
  56         struct radeon_bo *robj;
  57         int r;
  58
  59         *obj = NULL;
  60         /* At least align on page size */
  61         if (alignment < PAGE_SIZE) {
  62                 alignment = PAGE_SIZE;
  63         }
  64         r = radeon_bo_create(rdev, size, alignment, kernel, initial_domain, NULL, &robj);
  65         if (r) {
  66                 if (r != -ERESTARTSYS)
  67                         DRM_ERROR("Failed to allocate GEM object (%d, %d, %u, %d)\n",
  68                                   size, initial_domain, alignment, r);
  69                 return r;
  70         }
  71         *obj = &robj->gem_base;
  72
  73         mutex_lock(&rdev->gem.mutex);
  74         list_add_tail(&robj->list, &rdev->gem.objects);
  75         mutex_unlock(&rdev->gem.mutex);
  76
  77         return 0;
  78 }
  79
  80 int radeon_gem_set_domain(struct drm_gem_object *gobj,
  81                           uint32_t rdomain, uint32_t wdomain)
  82 {
  83         struct radeon_bo *robj;
  84         uint32_t domain;
  85         int r;
  86
  87         /* FIXME: reeimplement */
  88         robj = gem_to_radeon_bo(gobj);
  89         /* work out where to validate the buffer to */
  90         domain = wdomain;
  91         if (!domain) {
  92                 domain = rdomain;
  93         }
  94         if (!domain) {
  95                 /* Do nothings */
  96                 printk(KERN_WARNING "Set domain without domain !\n");
  97                 return 0;
  98         }
  99         if (domain == RADEON_GEM_DOMAIN_CPU) {
 100                 /* Asking for cpu access wait for object idle */
 101                 r = radeon_bo_wait(robj, NULL, false);
 102                 if (r) {
 103                         printk(KERN_ERR "Failed to wait for object !\n");
 104                         return r;
 105                 }
 106         }
 107         return 0;
 108 }
 109
 110 int radeon_gem_init(struct radeon_device *rdev)
 111 {
 112         INIT_LIST_HEAD(&rdev->gem.objects);
 113         return 0;
 114 }
 115
 116 void radeon_gem_fini(struct radeon_device *rdev)
 117 {
 118         radeon_bo_force_delete(rdev);
 119 }
 120
 121 /*
 122  * Call from drm_gem_handle_create which appear in both new and open ioctl
 123  * case.
 124  */
 125 int radeon_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
 126 {
 127         return 0;
 128 }
 129
 130 void radeon_gem_object_close(struct drm_gem_object *obj,
 131                              struct drm_file *file_priv)
 132 {
 133         struct radeon_bo *rbo = gem_to_radeon_bo(obj);
 134         struct radeon_device *rdev = rbo->rdev;
 135         struct radeon_fpriv *fpriv = file_priv->driver_priv;
 136         struct radeon_vm *vm = &fpriv->vm;
 137         struct radeon_bo_va *bo_va, *tmp;
 138
 139         if (rdev->family < CHIP_CAYMAN) {
 140                 return;
 141         }
 142
 143         if (radeon_bo_reserve(rbo, false)) {
 144                 return;
 145         }
 146         list_for_each_entry_safe(bo_va, tmp, &rbo->va, bo_list) {
 147                 if (bo_va->vm == vm) {
 148                         /* remove from this vm address space */
 149                         mutex_lock(&vm->mutex);
 150                         list_del(&bo_va->vm_list);
 151                         mutex_unlock(&vm->mutex);
 152                         list_del(&bo_va->bo_list);
 153                         kfree(bo_va);
 154                 }
 155         }
 156         radeon_bo_unreserve(rbo);
 157 }
 158
 159 static int radeon_gem_handle_lockup(struct radeon_device *rdev, int r)
 160 {
 161         if (r == -EDEADLK) {
 162                 r = radeon_gpu_reset(rdev);
 163                 if (!r)
 164                         r = -EAGAIN;
 165         }
 166         return r;
 167 }
 168
 169 /*
 170  * GEM ioctls.
 171  */
 172 int radeon_gem_info_ioctl(struct drm_device *dev, void *data,
 173                           struct drm_file *filp)
 174 {
 175         struct radeon_device *rdev = dev->dev_private;
 176         struct drm_radeon_gem_info *args = data;
 177         struct ttm_mem_type_manager *man;
 178         unsigned i;
 179
 180         man = &rdev->mman.bdev.man[TTM_PL_VRAM];
 181
 182         args->vram_size = rdev->mc.real_vram_size;
 183         args->vram_visible = (u64)man->size << PAGE_SHIFT;
 184         if (rdev->stollen_vga_memory)
 185                 args->vram_visible -= radeon_bo_size(rdev->stollen_vga_memory);
 186         args->vram_visible -= radeon_fbdev_total_size(rdev);
 187         args->gart_size = rdev->mc.gtt_size - 4096 - RADEON_IB_POOL_SIZE*64*1024;
 188         for(i = 0; i < RADEON_NUM_RINGS; ++i)
 189                 args->gart_size -= rdev->ring[i].ring_size;
 190         return 0;
 191 }
 192
 193 int radeon_gem_pread_ioctl(struct drm_device *dev, void *data,
 194                            struct drm_file *filp)
 195 {
 196         /* TODO: implement */
 197         DRM_ERROR("unimplemented %s\n", __func__);
 198         return -ENOSYS;
 199 }
 200
 201 int radeon_gem_pwrite_ioctl(struct drm_device *dev, void *data,
 202                             struct drm_file *filp)
 203 {
 204         /* TODO: implement */
 205         DRM_ERROR("unimplemented %s\n", __func__);
 206         return -ENOSYS;
 207 }
 208
 209 int radeon_gem_create_ioctl(struct drm_device *dev, void *data,
 210                             struct drm_file *filp)
 211 {
 212         struct radeon_device *rdev = dev->dev_private;
 213         struct drm_radeon_gem_create *args = data;
 214         struct drm_gem_object *gobj;
 215         uint32_t handle;
 216         int r;
 217
 218         down_read(&rdev->exclusive_lock);
 219         /* create a gem object to contain this object in */
 220         args->size = roundup(args->size, PAGE_SIZE);
 221         r = radeon_gem_object_create(rdev, args->size, args->alignment,
 222                                         args->initial_domain, false,
 223                                         false, &gobj);
 224         if (r) {
 225                 up_read(&rdev->exclusive_lock);
 226                 r = radeon_gem_handle_lockup(rdev, r);
 227                 return r;
 228         }
 229         r = drm_gem_handle_create(filp, gobj, &handle);
 230         /* drop reference from allocate - handle holds it now */
 231         drm_gem_object_unreference_unlocked(gobj);
 232         if (r) {
 233                 up_read(&rdev->exclusive_lock);
 234                 r = radeon_gem_handle_lockup(rdev, r);
 235                 return r;
 236         }
 237         args->handle = handle;
 238         up_read(&rdev->exclusive_lock);
 239         return 0;
 240 }
 241
 242 int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 243                                 struct drm_file *filp)
 244 {
 245         /* transition the BO to a domain -
 246          * just validate the BO into a certain domain */
 247         struct radeon_device *rdev = dev->dev_private;
 248         struct drm_radeon_gem_set_domain *args = data;
 249         struct drm_gem_object *gobj;
 250         struct radeon_bo *robj;
 251         int r;
 252
 253         /* for now if someone requests domain CPU -
 254          * just make sure the buffer is finished with */
 255         down_read(&rdev->exclusive_lock);
 256
 257         /* just do a BO wait for now */
 258         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 259         if (gobj == NULL) {
 260                 up_read(&rdev->exclusive_lock);
 261                 return -ENOENT;
 262         }
 263         robj = gem_to_radeon_bo(gobj);
 264
 265         r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);
 266
 267         drm_gem_object_unreference_unlocked(gobj);
 268         up_read(&rdev->exclusive_lock);
 269         r = radeon_gem_handle_lockup(robj->rdev, r);
 270         return r;
 271 }
 272
 273 int radeon_mode_dumb_mmap(struct drm_file *filp,
 274                           struct drm_device *dev,
 275                           uint32_t handle, uint64_t *offset_p)
 276 {
 277         struct drm_gem_object *gobj;
 278         struct radeon_bo *robj;
 279
 280         gobj = drm_gem_object_lookup(dev, filp, handle);
 281         if (gobj == NULL) {
 282                 return -ENOENT;
 283         }
 284         robj = gem_to_radeon_bo(gobj);
 285         *offset_p = radeon_bo_mmap_offset(robj);
 286         drm_gem_object_unreference_unlocked(gobj);
 287         return 0;
 288 }
 289
 290 int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
 291                           struct drm_file *filp)
 292 {
 293         struct drm_radeon_gem_mmap *args = data;
 294
 295         return radeon_mode_dumb_mmap(filp, dev, args->handle, &args->addr_ptr);
 296 }
 297
 298 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
 299                           struct drm_file *filp)
 300 {
 301         struct radeon_device *rdev = dev->dev_private;
 302         struct drm_radeon_gem_busy *args = data;
 303         struct drm_gem_object *gobj;
 304         struct radeon_bo *robj;
 305         int r;
 306         uint32_t cur_placement = 0;
 307
 308         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 309         if (gobj == NULL) {
 310                 return -ENOENT;
 311         }
 312         robj = gem_to_radeon_bo(gobj);
 313         r = radeon_bo_wait(robj, &cur_placement, true);
 314         switch (cur_placement) {
 315         case TTM_PL_VRAM:
 316                 args->domain = RADEON_GEM_DOMAIN_VRAM;
 317                 break;
 318         case TTM_PL_TT:
 319                 args->domain = RADEON_GEM_DOMAIN_GTT;
 320                 break;
 321         case TTM_PL_SYSTEM:
 322                 args->domain = RADEON_GEM_DOMAIN_CPU;
 323         default:
 324                 break;
 325         }
 326         drm_gem_object_unreference_unlocked(gobj);
 327         r = radeon_gem_handle_lockup(rdev, r);
 328         return r;
 329 }
 330
 331 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 332                               struct drm_file *filp)
 333 {
 334         struct radeon_device *rdev = dev->dev_private;
 335         struct drm_radeon_gem_wait_idle *args = data;
 336         struct drm_gem_object *gobj;
 337         struct radeon_bo *robj;
 338         int r;
 339
 340         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 341         if (gobj == NULL) {
 342                 return -ENOENT;
 343         }
 344         robj = gem_to_radeon_bo(gobj);
 345         r = radeon_bo_wait(robj, NULL, false);
 346         /* callback hw specific functions if any */
 347         if (rdev->asic->ioctl_wait_idle)
 348                 robj->rdev->asic->ioctl_wait_idle(rdev, robj);
 349         drm_gem_object_unreference_unlocked(gobj);
 350         r = radeon_gem_handle_lockup(rdev, r);
 351         return r;
 352 }
 353
 354 int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
 355                                 struct drm_file *filp)
 356 {
 357         struct drm_radeon_gem_set_tiling *args = data;
 358         struct drm_gem_object *gobj;
 359         struct radeon_bo *robj;
 360         int r = 0;
 361
 362         DRM_DEBUG("%d \n", args->handle);
 363         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 364         if (gobj == NULL)
 365                 return -ENOENT;
 366         robj = gem_to_radeon_bo(gobj);
 367         r = radeon_bo_set_tiling_flags(robj, args->tiling_flags, args->pitch);
 368         drm_gem_object_unreference_unlocked(gobj);
 369         return r;
 370 }
 371
 372 int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
 373                                 struct drm_file *filp)
 374 {
 375         struct drm_radeon_gem_get_tiling *args = data;
 376         struct drm_gem_object *gobj;
 377         struct radeon_bo *rbo;
 378         int r = 0;
 379
 380         DRM_DEBUG("\n");
 381         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 382         if (gobj == NULL)
 383                 return -ENOENT;
 384         rbo = gem_to_radeon_bo(gobj);
 385         r = radeon_bo_reserve(rbo, false);
 386         if (unlikely(r != 0))
 387                 goto out;
 388         radeon_bo_get_tiling_flags(rbo, &args->tiling_flags, &args->pitch);
 389         radeon_bo_unreserve(rbo);
 390 out:
 391         drm_gem_object_unreference_unlocked(gobj);
 392         return r;
 393 }
 394
 395 int radeon_gem_va_ioctl(struct drm_device *dev, void *data,
 396                           struct drm_file *filp)
 397 {
 398         struct drm_radeon_gem_va *args = data;
 399         struct drm_gem_object *gobj;
 400         struct radeon_device *rdev = dev->dev_private;
 401         struct radeon_fpriv *fpriv = filp->driver_priv;
 402         struct radeon_bo *rbo;
 403         struct radeon_bo_va *bo_va;
 404         u32 invalid_flags;
 405         int r = 0;
 406
 407         if (!rdev->vm_manager.enabled) {
 408                 args->operation = RADEON_VA_RESULT_ERROR;
 409                 return -ENOTTY;
 410         }
 411
 412         /* !! DONT REMOVE !!
 413          * We don't support vm_id yet, to be sure we don't have have broken
 414          * userspace, reject anyone trying to use non 0 value thus moving
 415          * forward we can use those fields without breaking existant userspace
 416          */
 417         if (args->vm_id) {
 418                 args->operation = RADEON_VA_RESULT_ERROR;
 419                 return -EINVAL;
 420         }
 421
 422         if (args->offset < RADEON_VA_RESERVED_SIZE) {
 423                 dev_err(&dev->pdev->dev,
 424                         "offset 0x%lX is in reserved area 0x%X\n",
 425                         (unsigned long)args->offset,
 426                         RADEON_VA_RESERVED_SIZE);
 427                 args->operation = RADEON_VA_RESULT_ERROR;
 428                 return -EINVAL;
 429         }
 430
 431         /* don't remove, we need to enforce userspace to set the snooped flag
 432          * otherwise we will endup with broken userspace and we won't be able
 433          * to enable this feature without adding new interface
 434          */
 435         invalid_flags = RADEON_VM_PAGE_VALID | RADEON_VM_PAGE_SYSTEM;
 436         if ((args->flags & invalid_flags)) {
 437                 dev_err(&dev->pdev->dev, "invalid flags 0x%08X vs 0x%08X\n",
 438                         args->flags, invalid_flags);
 439                 args->operation = RADEON_VA_RESULT_ERROR;
 440                 return -EINVAL;
 441         }
 442         if (!(args->flags & RADEON_VM_PAGE_SNOOPED)) {
 443                 dev_err(&dev->pdev->dev, "only supported snooped mapping for now\n");
 444                 args->operation = RADEON_VA_RESULT_ERROR;
 445                 return -EINVAL;
 446         }
 447
 448         switch (args->operation) {
 449         case RADEON_VA_MAP:
 450         case RADEON_VA_UNMAP:
 451                 break;
 452         default:
 453                 dev_err(&dev->pdev->dev, "unsupported operation %d\n",
 454                         args->operation);
 455                 args->operation = RADEON_VA_RESULT_ERROR;
 456                 return -EINVAL;
 457         }
 458
 459         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 460         if (gobj == NULL) {
 461                 args->operation = RADEON_VA_RESULT_ERROR;
 462                 return -ENOENT;
 463         }
 464         rbo = gem_to_radeon_bo(gobj);
 465         r = radeon_bo_reserve(rbo, false);
 466         if (r) {
 467                 args->operation = RADEON_VA_RESULT_ERROR;
 468                 drm_gem_object_unreference_unlocked(gobj);
 469                 return r;
 470         }
 471         switch (args->operation) {
 472         case RADEON_VA_MAP:
 473                 bo_va = radeon_bo_va(rbo, &fpriv->vm);
 474                 if (bo_va) {
 475                         args->operation = RADEON_VA_RESULT_VA_EXIST;
 476                         args->offset = bo_va->soffset;
 477                         goto out;
 478                 }
 479                 r = radeon_vm_bo_add(rdev, &fpriv->vm, rbo,
 480                                      args->offset, args->flags);
 481                 break;
 482         case RADEON_VA_UNMAP:
 483                 r = radeon_vm_bo_rmv(rdev, &fpriv->vm, rbo);
 484                 break;
 485         default:
 486                 break;
 487         }
 488         args->operation = RADEON_VA_RESULT_OK;
 489         if (r) {
 490                 args->operation = RADEON_VA_RESULT_ERROR;
 491         }
 492 out:
 493         radeon_bo_unreserve(rbo);
 494         drm_gem_object_unreference_unlocked(gobj);
 495         return r;
 496 }
 497
 498 int radeon_mode_dumb_create(struct drm_file *file_priv,
 499                             struct drm_device *dev,
 500                             struct drm_mode_create_dumb *args)
 501 {
 502         struct radeon_device *rdev = dev->dev_private;
 503         struct drm_gem_object *gobj;
 504         uint32_t handle;
 505         int r;
 506
 507         args->pitch = radeon_align_pitch(rdev, args->width, args->bpp, 0) * ((args->bpp + 1) / 8);
 508         args->size = args->pitch * args->height;
 509         args->size = ALIGN(args->size, PAGE_SIZE);
 510
 511         r = radeon_gem_object_create(rdev, args->size, 0,
 512                                      RADEON_GEM_DOMAIN_VRAM,
 513                                      false, ttm_bo_type_device,
 514                                      &gobj);
 515         if (r)
 516                 return -ENOMEM;
 517
 518         r = drm_gem_handle_create(file_priv, gobj, &handle);
 519         /* drop reference from allocate - handle holds it now */
 520         drm_gem_object_unreference_unlocked(gobj);
 521         if (r) {
 522                 return r;
 523         }
 524         args->handle = handle;
 525         return 0;
 526 }
 527
 528 int radeon_mode_dumb_destroy(struct drm_file *file_priv,
 529                              struct drm_device *dev,
 530                              uint32_t handle)
 531 {
 532         return drm_gem_handle_delete(file_priv, handle);
 533 }