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                 radeon_mutex_lock(&rdev->cs_mutex);
 163                 r = radeon_gpu_reset(rdev);
 164                 if (!r)
 165                         r = -EAGAIN;
 166                 radeon_mutex_unlock(&rdev->cs_mutex);
 167         }
 168         return r;
 169 }
 170
 171 /*
 172  * GEM ioctls.
 173  */
 174 int radeon_gem_info_ioctl(struct drm_device *dev, void *data,
 175                           struct drm_file *filp)
 176 {
 177         struct radeon_device *rdev = dev->dev_private;
 178         struct drm_radeon_gem_info *args = data;
 179         struct ttm_mem_type_manager *man;
 180         unsigned i;
 181
 182         man = &rdev->mman.bdev.man[TTM_PL_VRAM];
 183
 184         args->vram_size = rdev->mc.real_vram_size;
 185         args->vram_visible = (u64)man->size << PAGE_SHIFT;
 186         if (rdev->stollen_vga_memory)
 187                 args->vram_visible -= radeon_bo_size(rdev->stollen_vga_memory);
 188         args->vram_visible -= radeon_fbdev_total_size(rdev);
 189         args->gart_size = rdev->mc.gtt_size - 4096 - RADEON_IB_POOL_SIZE*64*1024;
 190         for(i = 0; i < RADEON_NUM_RINGS; ++i)
 191                 args->gart_size -= rdev->ring[i].ring_size;
 192         return 0;
 193 }
 194
 195 int radeon_gem_pread_ioctl(struct drm_device *dev, void *data,
 196                            struct drm_file *filp)
 197 {
 198         /* TODO: implement */
 199         DRM_ERROR("unimplemented %s\n", __func__);
 200         return -ENOSYS;
 201 }
 202
 203 int radeon_gem_pwrite_ioctl(struct drm_device *dev, void *data,
 204                             struct drm_file *filp)
 205 {
 206         /* TODO: implement */
 207         DRM_ERROR("unimplemented %s\n", __func__);
 208         return -ENOSYS;
 209 }
 210
 211 int radeon_gem_create_ioctl(struct drm_device *dev, void *data,
 212                             struct drm_file *filp)
 213 {
 214         struct radeon_device *rdev = dev->dev_private;
 215         struct drm_radeon_gem_create *args = data;
 216         struct drm_gem_object *gobj;
 217         uint32_t handle;
 218         int r;
 219
 220         /* create a gem object to contain this object in */
 221         args->size = roundup(args->size, PAGE_SIZE);
 222         r = radeon_gem_object_create(rdev, args->size, args->alignment,
 223                                         args->initial_domain, false,
 224                                         false, &gobj);
 225         if (r) {
 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                 r = radeon_gem_handle_lockup(rdev, r);
 234                 return r;
 235         }
 236         args->handle = handle;
 237         return 0;
 238 }
 239
 240 int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 241                                 struct drm_file *filp)
 242 {
 243         /* transition the BO to a domain -
 244          * just validate the BO into a certain domain */
 245         struct drm_radeon_gem_set_domain *args = data;
 246         struct drm_gem_object *gobj;
 247         struct radeon_bo *robj;
 248         int r;
 249
 250         /* for now if someone requests domain CPU -
 251          * just make sure the buffer is finished with */
 252
 253         /* just do a BO wait for now */
 254         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 255         if (gobj == NULL) {
 256                 return -ENOENT;
 257         }
 258         robj = gem_to_radeon_bo(gobj);
 259
 260         r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);
 261
 262         drm_gem_object_unreference_unlocked(gobj);
 263         r = radeon_gem_handle_lockup(robj->rdev, r);
 264         return r;
 265 }
 266
 267 int radeon_mode_dumb_mmap(struct drm_file *filp,
 268                           struct drm_device *dev,
 269                           uint32_t handle, uint64_t *offset_p)
 270 {
 271         struct drm_gem_object *gobj;
 272         struct radeon_bo *robj;
 273
 274         gobj = drm_gem_object_lookup(dev, filp, handle);
 275         if (gobj == NULL) {
 276                 return -ENOENT;
 277         }
 278         robj = gem_to_radeon_bo(gobj);
 279         *offset_p = radeon_bo_mmap_offset(robj);
 280         drm_gem_object_unreference_unlocked(gobj);
 281         return 0;
 282 }
 283
 284 int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
 285                           struct drm_file *filp)
 286 {
 287         struct drm_radeon_gem_mmap *args = data;
 288
 289         return radeon_mode_dumb_mmap(filp, dev, args->handle, &args->addr_ptr);
 290 }
 291
 292 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
 293                           struct drm_file *filp)
 294 {
 295         struct radeon_device *rdev = dev->dev_private;
 296         struct drm_radeon_gem_busy *args = data;
 297         struct drm_gem_object *gobj;
 298         struct radeon_bo *robj;
 299         int r;
 300         uint32_t cur_placement = 0;
 301
 302         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 303         if (gobj == NULL) {
 304                 return -ENOENT;
 305         }
 306         robj = gem_to_radeon_bo(gobj);
 307         r = radeon_bo_wait(robj, &cur_placement, true);
 308         switch (cur_placement) {
 309         case TTM_PL_VRAM:
 310                 args->domain = RADEON_GEM_DOMAIN_VRAM;
 311                 break;
 312         case TTM_PL_TT:
 313                 args->domain = RADEON_GEM_DOMAIN_GTT;
 314                 break;
 315         case TTM_PL_SYSTEM:
 316                 args->domain = RADEON_GEM_DOMAIN_CPU;
 317         default:
 318                 break;
 319         }
 320         drm_gem_object_unreference_unlocked(gobj);
 321         r = radeon_gem_handle_lockup(rdev, r);
 322         return r;
 323 }
 324
 325 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 326                               struct drm_file *filp)
 327 {
 328         struct radeon_device *rdev = dev->dev_private;
 329         struct drm_radeon_gem_wait_idle *args = data;
 330         struct drm_gem_object *gobj;
 331         struct radeon_bo *robj;
 332         int r;
 333
 334         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 335         if (gobj == NULL) {
 336                 return -ENOENT;
 337         }
 338         robj = gem_to_radeon_bo(gobj);
 339         r = radeon_bo_wait(robj, NULL, false);
 340         /* callback hw specific functions if any */
 341         if (rdev->asic->ioctl_wait_idle)
 342                 robj->rdev->asic->ioctl_wait_idle(rdev, robj);
 343         drm_gem_object_unreference_unlocked(gobj);
 344         r = radeon_gem_handle_lockup(rdev, r);
 345         return r;
 346 }
 347
 348 int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
 349                                 struct drm_file *filp)
 350 {
 351         struct drm_radeon_gem_set_tiling *args = data;
 352         struct drm_gem_object *gobj;
 353         struct radeon_bo *robj;
 354         int r = 0;
 355
 356         DRM_DEBUG("%d \n", args->handle);
 357         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 358         if (gobj == NULL)
 359                 return -ENOENT;
 360         robj = gem_to_radeon_bo(gobj);
 361         r = radeon_bo_set_tiling_flags(robj, args->tiling_flags, args->pitch);
 362         drm_gem_object_unreference_unlocked(gobj);
 363         return r;
 364 }
 365
 366 int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
 367                                 struct drm_file *filp)
 368 {
 369         struct drm_radeon_gem_get_tiling *args = data;
 370         struct drm_gem_object *gobj;
 371         struct radeon_bo *rbo;
 372         int r = 0;
 373
 374         DRM_DEBUG("\n");
 375         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 376         if (gobj == NULL)
 377                 return -ENOENT;
 378         rbo = gem_to_radeon_bo(gobj);
 379         r = radeon_bo_reserve(rbo, false);
 380         if (unlikely(r != 0))
 381                 goto out;
 382         radeon_bo_get_tiling_flags(rbo, &args->tiling_flags, &args->pitch);
 383         radeon_bo_unreserve(rbo);
 384 out:
 385         drm_gem_object_unreference_unlocked(gobj);
 386         return r;
 387 }
 388
 389 int radeon_gem_va_ioctl(struct drm_device *dev, void *data,
 390                           struct drm_file *filp)
 391 {
 392         struct drm_radeon_gem_va *args = data;
 393         struct drm_gem_object *gobj;
 394         struct radeon_device *rdev = dev->dev_private;
 395         struct radeon_fpriv *fpriv = filp->driver_priv;
 396         struct radeon_bo *rbo;
 397         struct radeon_bo_va *bo_va;
 398         u32 invalid_flags;
 399         int r = 0;
 400
 401         if (!rdev->vm_manager.enabled) {
 402                 args->operation = RADEON_VA_RESULT_ERROR;
 403                 return -ENOTTY;
 404         }
 405
 406         /* !! DONT REMOVE !!
 407          * We don't support vm_id yet, to be sure we don't have have broken
 408          * userspace, reject anyone trying to use non 0 value thus moving
 409          * forward we can use those fields without breaking existant userspace
 410          */
 411         if (args->vm_id) {
 412                 args->operation = RADEON_VA_RESULT_ERROR;
 413                 return -EINVAL;
 414         }
 415
 416         if (args->offset < RADEON_VA_RESERVED_SIZE) {
 417                 dev_err(&dev->pdev->dev,
 418                         "offset 0x%lX is in reserved area 0x%X\n",
 419                         (unsigned long)args->offset,
 420                         RADEON_VA_RESERVED_SIZE);
 421                 args->operation = RADEON_VA_RESULT_ERROR;
 422                 return -EINVAL;
 423         }
 424
 425         /* don't remove, we need to enforce userspace to set the snooped flag
 426          * otherwise we will endup with broken userspace and we won't be able
 427          * to enable this feature without adding new interface
 428          */
 429         invalid_flags = RADEON_VM_PAGE_VALID | RADEON_VM_PAGE_SYSTEM;
 430         if ((args->flags & invalid_flags)) {
 431                 dev_err(&dev->pdev->dev, "invalid flags 0x%08X vs 0x%08X\n",
 432                         args->flags, invalid_flags);
 433                 args->operation = RADEON_VA_RESULT_ERROR;
 434                 return -EINVAL;
 435         }
 436         if (!(args->flags & RADEON_VM_PAGE_SNOOPED)) {
 437                 dev_err(&dev->pdev->dev, "only supported snooped mapping for now\n");
 438                 args->operation = RADEON_VA_RESULT_ERROR;
 439                 return -EINVAL;
 440         }
 441
 442         switch (args->operation) {
 443         case RADEON_VA_MAP:
 444         case RADEON_VA_UNMAP:
 445                 break;
 446         default:
 447                 dev_err(&dev->pdev->dev, "unsupported operation %d\n",
 448                         args->operation);
 449                 args->operation = RADEON_VA_RESULT_ERROR;
 450                 return -EINVAL;
 451         }
 452
 453         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 454         if (gobj == NULL) {
 455                 args->operation = RADEON_VA_RESULT_ERROR;
 456                 return -ENOENT;
 457         }
 458         rbo = gem_to_radeon_bo(gobj);
 459         r = radeon_bo_reserve(rbo, false);
 460         if (r) {
 461                 args->operation = RADEON_VA_RESULT_ERROR;
 462                 drm_gem_object_unreference_unlocked(gobj);
 463                 return r;
 464         }
 465         switch (args->operation) {
 466         case RADEON_VA_MAP:
 467                 bo_va = radeon_bo_va(rbo, &fpriv->vm);
 468                 if (bo_va) {
 469                         args->operation = RADEON_VA_RESULT_VA_EXIST;
 470                         args->offset = bo_va->soffset;
 471                         goto out;
 472                 }
 473                 r = radeon_vm_bo_add(rdev, &fpriv->vm, rbo,
 474                                      args->offset, args->flags);
 475                 break;
 476         case RADEON_VA_UNMAP:
 477                 r = radeon_vm_bo_rmv(rdev, &fpriv->vm, rbo);
 478                 break;
 479         default:
 480                 break;
 481         }
 482         args->operation = RADEON_VA_RESULT_OK;
 483         if (r) {
 484                 args->operation = RADEON_VA_RESULT_ERROR;
 485         }
 486 out:
 487         radeon_bo_unreserve(rbo);
 488         drm_gem_object_unreference_unlocked(gobj);
 489         return r;
 490 }
 491
 492 int radeon_mode_dumb_create(struct drm_file *file_priv,
 493                             struct drm_device *dev,
 494                             struct drm_mode_create_dumb *args)
 495 {
 496         struct radeon_device *rdev = dev->dev_private;
 497         struct drm_gem_object *gobj;
 498         uint32_t handle;
 499         int r;
 500
 501         args->pitch = radeon_align_pitch(rdev, args->width, args->bpp, 0) * ((args->bpp + 1) / 8);
 502         args->size = args->pitch * args->height;
 503         args->size = ALIGN(args->size, PAGE_SIZE);
 504
 505         r = radeon_gem_object_create(rdev, args->size, 0,
 506                                      RADEON_GEM_DOMAIN_VRAM,
 507                                      false, ttm_bo_type_device,
 508                                      &gobj);
 509         if (r)
 510                 return -ENOMEM;
 511
 512         r = drm_gem_handle_create(file_priv, gobj, &handle);
 513         /* drop reference from allocate - handle holds it now */
 514         drm_gem_object_unreference_unlocked(gobj);
 515         if (r) {
 516                 return r;
 517         }
 518         args->handle = handle;
 519         return 0;
 520 }
 521
 522 int radeon_mode_dumb_destroy(struct drm_file *file_priv,
 523                              struct drm_device *dev,
 524                              uint32_t handle)
 525 {
 526         return drm_gem_handle_delete(file_priv, handle);
 527 }