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
 138         if (rdev->family < CHIP_CAYMAN) {
 139                 return;
 140         }
 141
 142         if (radeon_bo_reserve(rbo, false)) {
 143                 dev_err(rdev->dev, "leaking bo va because we fail to reserve bo\n");
 144                 return;
 145         }
 146         radeon_vm_bo_rmv(rdev, vm, rbo);
 147         radeon_bo_unreserve(rbo);
 148 }
 149
 150 static int radeon_gem_handle_lockup(struct radeon_device *rdev, int r)
 151 {
 152         if (r == -EDEADLK) {
 153                 r = radeon_gpu_reset(rdev);
 154                 if (!r)
 155                         r = -EAGAIN;
 156         }
 157         return r;
 158 }
 159
 160 /*
 161  * GEM ioctls.
 162  */
 163 int radeon_gem_info_ioctl(struct drm_device *dev, void *data,
 164                           struct drm_file *filp)
 165 {
 166         struct radeon_device *rdev = dev->dev_private;
 167         struct drm_radeon_gem_info *args = data;
 168         struct ttm_mem_type_manager *man;
 169         unsigned i;
 170
 171         man = &rdev->mman.bdev.man[TTM_PL_VRAM];
 172
 173         args->vram_size = rdev->mc.real_vram_size;
 174         args->vram_visible = (u64)man->size << PAGE_SHIFT;
 175         if (rdev->stollen_vga_memory)
 176                 args->vram_visible -= radeon_bo_size(rdev->stollen_vga_memory);
 177         args->vram_visible -= radeon_fbdev_total_size(rdev);
 178         args->gart_size = rdev->mc.gtt_size - 4096 - RADEON_IB_POOL_SIZE*64*1024;
 179         for(i = 0; i < RADEON_NUM_RINGS; ++i)
 180                 args->gart_size -= rdev->ring[i].ring_size;
 181         return 0;
 182 }
 183
 184 int radeon_gem_pread_ioctl(struct drm_device *dev, void *data,
 185                            struct drm_file *filp)
 186 {
 187         /* TODO: implement */
 188         DRM_ERROR("unimplemented %s\n", __func__);
 189         return -ENOSYS;
 190 }
 191
 192 int radeon_gem_pwrite_ioctl(struct drm_device *dev, void *data,
 193                             struct drm_file *filp)
 194 {
 195         /* TODO: implement */
 196         DRM_ERROR("unimplemented %s\n", __func__);
 197         return -ENOSYS;
 198 }
 199
 200 int radeon_gem_create_ioctl(struct drm_device *dev, void *data,
 201                             struct drm_file *filp)
 202 {
 203         struct radeon_device *rdev = dev->dev_private;
 204         struct drm_radeon_gem_create *args = data;
 205         struct drm_gem_object *gobj;
 206         uint32_t handle;
 207         int r;
 208
 209         down_read(&rdev->exclusive_lock);
 210         /* create a gem object to contain this object in */
 211         args->size = roundup(args->size, PAGE_SIZE);
 212         r = radeon_gem_object_create(rdev, args->size, args->alignment,
 213                                         args->initial_domain, false,
 214                                         false, &gobj);
 215         if (r) {
 216                 up_read(&rdev->exclusive_lock);
 217                 r = radeon_gem_handle_lockup(rdev, r);
 218                 return r;
 219         }
 220         r = drm_gem_handle_create(filp, gobj, &handle);
 221         /* drop reference from allocate - handle holds it now */
 222         drm_gem_object_unreference_unlocked(gobj);
 223         if (r) {
 224                 up_read(&rdev->exclusive_lock);
 225                 r = radeon_gem_handle_lockup(rdev, r);
 226                 return r;
 227         }
 228         args->handle = handle;
 229         up_read(&rdev->exclusive_lock);
 230         return 0;
 231 }
 232
 233 int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 234                                 struct drm_file *filp)
 235 {
 236         /* transition the BO to a domain -
 237          * just validate the BO into a certain domain */
 238         struct radeon_device *rdev = dev->dev_private;
 239         struct drm_radeon_gem_set_domain *args = data;
 240         struct drm_gem_object *gobj;
 241         struct radeon_bo *robj;
 242         int r;
 243
 244         /* for now if someone requests domain CPU -
 245          * just make sure the buffer is finished with */
 246         down_read(&rdev->exclusive_lock);
 247
 248         /* just do a BO wait for now */
 249         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 250         if (gobj == NULL) {
 251                 up_read(&rdev->exclusive_lock);
 252                 return -ENOENT;
 253         }
 254         robj = gem_to_radeon_bo(gobj);
 255
 256         r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);
 257
 258         drm_gem_object_unreference_unlocked(gobj);
 259         up_read(&rdev->exclusive_lock);
 260         r = radeon_gem_handle_lockup(robj->rdev, r);
 261         return r;
 262 }
 263
 264 int radeon_mode_dumb_mmap(struct drm_file *filp,
 265                           struct drm_device *dev,
 266                           uint32_t handle, uint64_t *offset_p)
 267 {
 268         struct drm_gem_object *gobj;
 269         struct radeon_bo *robj;
 270
 271         gobj = drm_gem_object_lookup(dev, filp, handle);
 272         if (gobj == NULL) {
 273                 return -ENOENT;
 274         }
 275         robj = gem_to_radeon_bo(gobj);
 276         *offset_p = radeon_bo_mmap_offset(robj);
 277         drm_gem_object_unreference_unlocked(gobj);
 278         return 0;
 279 }
 280
 281 int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
 282                           struct drm_file *filp)
 283 {
 284         struct drm_radeon_gem_mmap *args = data;
 285
 286         return radeon_mode_dumb_mmap(filp, dev, args->handle, &args->addr_ptr);
 287 }
 288
 289 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
 290                           struct drm_file *filp)
 291 {
 292         struct radeon_device *rdev = dev->dev_private;
 293         struct drm_radeon_gem_busy *args = data;
 294         struct drm_gem_object *gobj;
 295         struct radeon_bo *robj;
 296         int r;
 297         uint32_t cur_placement = 0;
 298
 299         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 300         if (gobj == NULL) {
 301                 return -ENOENT;
 302         }
 303         robj = gem_to_radeon_bo(gobj);
 304         r = radeon_bo_wait(robj, &cur_placement, true);
 305         switch (cur_placement) {
 306         case TTM_PL_VRAM:
 307                 args->domain = RADEON_GEM_DOMAIN_VRAM;
 308                 break;
 309         case TTM_PL_TT:
 310                 args->domain = RADEON_GEM_DOMAIN_GTT;
 311                 break;
 312         case TTM_PL_SYSTEM:
 313                 args->domain = RADEON_GEM_DOMAIN_CPU;
 314         default:
 315                 break;
 316         }
 317         drm_gem_object_unreference_unlocked(gobj);
 318         r = radeon_gem_handle_lockup(rdev, r);
 319         return r;
 320 }
 321
 322 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 323                               struct drm_file *filp)
 324 {
 325         struct radeon_device *rdev = dev->dev_private;
 326         struct drm_radeon_gem_wait_idle *args = data;
 327         struct drm_gem_object *gobj;
 328         struct radeon_bo *robj;
 329         int r;
 330
 331         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 332         if (gobj == NULL) {
 333                 return -ENOENT;
 334         }
 335         robj = gem_to_radeon_bo(gobj);
 336         r = radeon_bo_wait(robj, NULL, false);
 337         /* callback hw specific functions if any */
 338         if (rdev->asic->ioctl_wait_idle)
 339                 robj->rdev->asic->ioctl_wait_idle(rdev, robj);
 340         drm_gem_object_unreference_unlocked(gobj);
 341         r = radeon_gem_handle_lockup(rdev, r);
 342         return r;
 343 }
 344
 345 int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
 346                                 struct drm_file *filp)
 347 {
 348         struct drm_radeon_gem_set_tiling *args = data;
 349         struct drm_gem_object *gobj;
 350         struct radeon_bo *robj;
 351         int r = 0;
 352
 353         DRM_DEBUG("%d \n", args->handle);
 354         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 355         if (gobj == NULL)
 356                 return -ENOENT;
 357         robj = gem_to_radeon_bo(gobj);
 358         r = radeon_bo_set_tiling_flags(robj, args->tiling_flags, args->pitch);
 359         drm_gem_object_unreference_unlocked(gobj);
 360         return r;
 361 }
 362
 363 int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
 364                                 struct drm_file *filp)
 365 {
 366         struct drm_radeon_gem_get_tiling *args = data;
 367         struct drm_gem_object *gobj;
 368         struct radeon_bo *rbo;
 369         int r = 0;
 370
 371         DRM_DEBUG("\n");
 372         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 373         if (gobj == NULL)
 374                 return -ENOENT;
 375         rbo = gem_to_radeon_bo(gobj);
 376         r = radeon_bo_reserve(rbo, false);
 377         if (unlikely(r != 0))
 378                 goto out;
 379         radeon_bo_get_tiling_flags(rbo, &args->tiling_flags, &args->pitch);
 380         radeon_bo_unreserve(rbo);
 381 out:
 382         drm_gem_object_unreference_unlocked(gobj);
 383         return r;
 384 }
 385
 386 int radeon_gem_va_ioctl(struct drm_device *dev, void *data,
 387                           struct drm_file *filp)
 388 {
 389         struct drm_radeon_gem_va *args = data;
 390         struct drm_gem_object *gobj;
 391         struct radeon_device *rdev = dev->dev_private;
 392         struct radeon_fpriv *fpriv = filp->driver_priv;
 393         struct radeon_bo *rbo;
 394         struct radeon_bo_va *bo_va;
 395         u32 invalid_flags;
 396         int r = 0;
 397
 398         if (!rdev->vm_manager.enabled) {
 399                 args->operation = RADEON_VA_RESULT_ERROR;
 400                 return -ENOTTY;
 401         }
 402
 403         /* !! DONT REMOVE !!
 404          * We don't support vm_id yet, to be sure we don't have have broken
 405          * userspace, reject anyone trying to use non 0 value thus moving
 406          * forward we can use those fields without breaking existant userspace
 407          */
 408         if (args->vm_id) {
 409                 args->operation = RADEON_VA_RESULT_ERROR;
 410                 return -EINVAL;
 411         }
 412
 413         if (args->offset < RADEON_VA_RESERVED_SIZE) {
 414                 dev_err(&dev->pdev->dev,
 415                         "offset 0x%lX is in reserved area 0x%X\n",
 416                         (unsigned long)args->offset,
 417                         RADEON_VA_RESERVED_SIZE);
 418                 args->operation = RADEON_VA_RESULT_ERROR;
 419                 return -EINVAL;
 420         }
 421
 422         /* don't remove, we need to enforce userspace to set the snooped flag
 423          * otherwise we will endup with broken userspace and we won't be able
 424          * to enable this feature without adding new interface
 425          */
 426         invalid_flags = RADEON_VM_PAGE_VALID | RADEON_VM_PAGE_SYSTEM;
 427         if ((args->flags & invalid_flags)) {
 428                 dev_err(&dev->pdev->dev, "invalid flags 0x%08X vs 0x%08X\n",
 429                         args->flags, invalid_flags);
 430                 args->operation = RADEON_VA_RESULT_ERROR;
 431                 return -EINVAL;
 432         }
 433         if (!(args->flags & RADEON_VM_PAGE_SNOOPED)) {
 434                 dev_err(&dev->pdev->dev, "only supported snooped mapping for now\n");
 435                 args->operation = RADEON_VA_RESULT_ERROR;
 436                 return -EINVAL;
 437         }
 438
 439         switch (args->operation) {
 440         case RADEON_VA_MAP:
 441         case RADEON_VA_UNMAP:
 442                 break;
 443         default:
 444                 dev_err(&dev->pdev->dev, "unsupported operation %d\n",
 445                         args->operation);
 446                 args->operation = RADEON_VA_RESULT_ERROR;
 447                 return -EINVAL;
 448         }
 449
 450         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 451         if (gobj == NULL) {
 452                 args->operation = RADEON_VA_RESULT_ERROR;
 453                 return -ENOENT;
 454         }
 455         rbo = gem_to_radeon_bo(gobj);
 456         r = radeon_bo_reserve(rbo, false);
 457         if (r) {
 458                 args->operation = RADEON_VA_RESULT_ERROR;
 459                 drm_gem_object_unreference_unlocked(gobj);
 460                 return r;
 461         }
 462         switch (args->operation) {
 463         case RADEON_VA_MAP:
 464                 bo_va = radeon_bo_va(rbo, &fpriv->vm);
 465                 if (bo_va) {
 466                         args->operation = RADEON_VA_RESULT_VA_EXIST;
 467                         args->offset = bo_va->soffset;
 468                         goto out;
 469                 }
 470                 r = radeon_vm_bo_add(rdev, &fpriv->vm, rbo,
 471                                      args->offset, args->flags);
 472                 break;
 473         case RADEON_VA_UNMAP:
 474                 r = radeon_vm_bo_rmv(rdev, &fpriv->vm, rbo);
 475                 break;
 476         default:
 477                 break;
 478         }
 479         args->operation = RADEON_VA_RESULT_OK;
 480         if (r) {
 481                 args->operation = RADEON_VA_RESULT_ERROR;
 482         }
 483 out:
 484         radeon_bo_unreserve(rbo);
 485         drm_gem_object_unreference_unlocked(gobj);
 486         return r;
 487 }
 488
 489 int radeon_mode_dumb_create(struct drm_file *file_priv,
 490                             struct drm_device *dev,
 491                             struct drm_mode_create_dumb *args)
 492 {
 493         struct radeon_device *rdev = dev->dev_private;
 494         struct drm_gem_object *gobj;
 495         uint32_t handle;
 496         int r;
 497
 498         args->pitch = radeon_align_pitch(rdev, args->width, args->bpp, 0) * ((args->bpp + 1) / 8);
 499         args->size = args->pitch * args->height;
 500         args->size = ALIGN(args->size, PAGE_SIZE);
 501
 502         r = radeon_gem_object_create(rdev, args->size, 0,
 503                                      RADEON_GEM_DOMAIN_VRAM,
 504                                      false, ttm_bo_type_device,
 505                                      &gobj);
 506         if (r)
 507                 return -ENOMEM;
 508
 509         r = drm_gem_handle_create(file_priv, gobj, &handle);
 510         /* drop reference from allocate - handle holds it now */
 511         drm_gem_object_unreference_unlocked(gobj);
 512         if (r) {
 513                 return r;
 514         }
 515         args->handle = handle;
 516         return 0;
 517 }
 518
 519 int radeon_mode_dumb_destroy(struct drm_file *file_priv,
 520                              struct drm_device *dev,
 521                              uint32_t handle)
 522 {
 523         return drm_gem_handle_delete(file_priv, handle);
 524 }