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