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