SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/gpu/drm/radeon/radeon_object.c

   1 /*
   2  * Copyright 2009 Jerome Glisse.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  16  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  17  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  18  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  19  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  20  *
  21  * The above copyright notice and this permission notice (including the
  22  * next paragraph) shall be included in all copies or substantial portions
  23  * of the Software.
  24  *
  25  */
  26 /*
  27  * Authors:
  28  *    Jerome Glisse <glisse@freedesktop.org>
  29  *    Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
  30  *    Dave Airlie
  31  */
  32 #include <linux/list.h>
  33 #include <drm/drmP.h>
  34 #include "radeon_drm.h"
  35 #include "radeon.h"
  36
  37
  38 int radeon_ttm_init(struct radeon_device *rdev);
  39 void radeon_ttm_fini(struct radeon_device *rdev);
  40 static void radeon_bo_clear_surface_reg(struct radeon_bo *bo);
  41
  42 /*
  43  * To exclude mutual BO access we rely on bo_reserve exclusion, as all
  44  * function are calling it.
  45  */
  46
  47 static void radeon_ttm_bo_destroy(struct ttm_buffer_object *tbo)
  48 {
  49         struct radeon_bo *bo;
  50
  51         bo = container_of(tbo, struct radeon_bo, tbo);
  52         mutex_lock(&bo->rdev->gem.mutex);
  53         list_del_init(&bo->list);
  54         mutex_unlock(&bo->rdev->gem.mutex);
  55         radeon_bo_clear_surface_reg(bo);
  56         kfree(bo);
  57 }
  58
  59 bool radeon_ttm_bo_is_radeon_bo(struct ttm_buffer_object *bo)
  60 {
  61         if (bo->destroy == &radeon_ttm_bo_destroy)
  62                 return true;
  63         return false;
  64 }
  65
  66 void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
  67 {
  68         u32 c = 0;
  69
  70         rbo->placement.fpfn = 0;
  71         rbo->placement.lpfn = 0;
  72         rbo->placement.placement = rbo->placements;
  73         rbo->placement.busy_placement = rbo->placements;
  74         if (domain & RADEON_GEM_DOMAIN_VRAM)
  75                 rbo->placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
  76                                         TTM_PL_FLAG_VRAM;
  77         if (domain & RADEON_GEM_DOMAIN_GTT)
  78                 rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
  79         if (domain & RADEON_GEM_DOMAIN_CPU)
  80                 rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
  81         if (!c)
  82                 rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
  83         rbo->placement.num_placement = c;
  84         rbo->placement.num_busy_placement = c;
  85 }
  86
  87 int radeon_bo_create(struct radeon_device *rdev, struct drm_gem_object *gobj,
  88                         unsigned long size, bool kernel, u32 domain,
  89                         struct radeon_bo **bo_ptr)
  90 {
  91         struct radeon_bo *bo;
  92         enum ttm_bo_type type;
  93         int r;
  94
  95         if (unlikely(rdev->mman.bdev.dev_mapping == NULL)) {
  96                 rdev->mman.bdev.dev_mapping = rdev->ddev->dev_mapping;
  97         }
  98         if (kernel) {
  99                 type = ttm_bo_type_kernel;
 100         } else {
 101                 type = ttm_bo_type_device;
 102         }
 103         *bo_ptr = NULL;
 104         bo = kzalloc(sizeof(struct radeon_bo), GFP_KERNEL);
 105         if (bo == NULL)
 106                 return -ENOMEM;
 107         bo->rdev = rdev;
 108         bo->gobj = gobj;
 109         bo->surface_reg = -1;
 110         INIT_LIST_HEAD(&bo->list);
 111
 112         radeon_ttm_placement_from_domain(bo, domain);
 113         /* Kernel allocation are uninterruptible */
 114         r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
 115                         &bo->placement, 0, 0, !kernel, NULL, size,
 116                         &radeon_ttm_bo_destroy);
 117         if (unlikely(r != 0)) {
 118                 if (r != -ERESTARTSYS)
 119                         dev_err(rdev->dev,
 120                                 "object_init failed for (%lu, 0x%08X)\n",
 121                                 size, domain);
 122                 return r;
 123         }
 124         *bo_ptr = bo;
 125         if (gobj) {
 126                 mutex_lock(&bo->rdev->gem.mutex);
 127                 list_add_tail(&bo->list, &rdev->gem.objects);
 128                 mutex_unlock(&bo->rdev->gem.mutex);
 129         }
 130         return 0;
 131 }
 132
 133 int radeon_bo_kmap(struct radeon_bo *bo, void **ptr)
 134 {
 135         bool is_iomem;
 136         int r;
 137
 138         if (bo->kptr) {
 139                 if (ptr) {
 140                         *ptr = bo->kptr;
 141                 }
 142                 return 0;
 143         }
 144         r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
 145         if (r) {
 146                 return r;
 147         }
 148         bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
 149         if (ptr) {
 150                 *ptr = bo->kptr;
 151         }
 152         radeon_bo_check_tiling(bo, 0, 0);
 153         return 0;
 154 }
 155
 156 void radeon_bo_kunmap(struct radeon_bo *bo)
 157 {
 158         if (bo->kptr == NULL)
 159                 return;
 160         bo->kptr = NULL;
 161         radeon_bo_check_tiling(bo, 0, 0);
 162         ttm_bo_kunmap(&bo->kmap);
 163 }
 164
 165 void radeon_bo_unref(struct radeon_bo **bo)
 166 {
 167         struct ttm_buffer_object *tbo;
 168
 169         if ((*bo) == NULL)
 170                 return;
 171         tbo = &((*bo)->tbo);
 172         ttm_bo_unref(&tbo);
 173         if (tbo == NULL)
 174                 *bo = NULL;
 175 }
 176
 177 int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr)
 178 {
 179         int r, i;
 180
 181         if (bo->pin_count) {
 182                 bo->pin_count++;
 183                 if (gpu_addr)
 184                         *gpu_addr = radeon_bo_gpu_offset(bo);
 185                 return 0;
 186         }
 187         radeon_ttm_placement_from_domain(bo, domain);
 188         /* force to pin into visible video ram */
 189         bo->placement.lpfn = bo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
 190         for (i = 0; i < bo->placement.num_placement; i++)
 191                 bo->placements[i] |= TTM_PL_FLAG_NO_EVICT;
 192         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 193         if (likely(r == 0)) {
 194                 bo->pin_count = 1;
 195                 if (gpu_addr != NULL)
 196                         *gpu_addr = radeon_bo_gpu_offset(bo);
 197         }
 198         if (unlikely(r != 0))
 199                 dev_err(bo->rdev->dev, "%p pin failed\n", bo);
 200         return r;
 201 }
 202
 203 int radeon_bo_unpin(struct radeon_bo *bo)
 204 {
 205         int r, i;
 206
 207         if (!bo->pin_count) {
 208                 dev_warn(bo->rdev->dev, "%p unpin not necessary\n", bo);
 209                 return 0;
 210         }
 211         bo->pin_count--;
 212         if (bo->pin_count)
 213                 return 0;
 214         for (i = 0; i < bo->placement.num_placement; i++)
 215                 bo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT;
 216         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 217         if (unlikely(r != 0))
 218                 dev_err(bo->rdev->dev, "%p validate failed for unpin\n", bo);
 219         return r;
 220 }
 221
 222 int radeon_bo_evict_vram(struct radeon_device *rdev)
 223 {
 224         /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
 225         if (0 && (rdev->flags & RADEON_IS_IGP)) {
 226                 if (rdev->mc.igp_sideport_enabled == false)
 227                         /* Useless to evict on IGP chips */
 228                         return 0;
 229         }
 230         return ttm_bo_evict_mm(&rdev->mman.bdev, TTM_PL_VRAM);
 231 }
 232
 233 void radeon_bo_force_delete(struct radeon_device *rdev)
 234 {
 235         struct radeon_bo *bo, *n;
 236         struct drm_gem_object *gobj;
 237
 238         if (list_empty(&rdev->gem.objects)) {
 239                 return;
 240         }
 241         dev_err(rdev->dev, "Userspace still has active objects !\n");
 242         list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) {
 243                 mutex_lock(&rdev->ddev->struct_mutex);
 244                 gobj = bo->gobj;
 245                 dev_err(rdev->dev, "%p %p %lu %lu force free\n",
 246                         gobj, bo, (unsigned long)gobj->size,
 247                         *((unsigned long *)&gobj->refcount));
 248                 mutex_lock(&bo->rdev->gem.mutex);
 249                 list_del_init(&bo->list);
 250                 mutex_unlock(&bo->rdev->gem.mutex);
 251                 radeon_bo_unref(&bo);
 252                 gobj->driver_private = NULL;
 253                 drm_gem_object_unreference(gobj);
 254                 mutex_unlock(&rdev->ddev->struct_mutex);
 255         }
 256 }
 257
 258 int radeon_bo_init(struct radeon_device *rdev)
 259 {
 260         /* Add an MTRR for the VRAM */
 261         rdev->mc.vram_mtrr = mtrr_add(rdev->mc.aper_base, rdev->mc.aper_size,
 262                         MTRR_TYPE_WRCOMB, 1);
 263         DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
 264                 rdev->mc.mc_vram_size >> 20,
 265                 (unsigned long long)rdev->mc.aper_size >> 20);
 266         DRM_INFO("RAM width %dbits %cDR\n",
 267                         rdev->mc.vram_width, rdev->mc.vram_is_ddr ? 'D' : 'S');
 268         return radeon_ttm_init(rdev);
 269 }
 270
 271 void radeon_bo_fini(struct radeon_device *rdev)
 272 {
 273         radeon_ttm_fini(rdev);
 274 }
 275
 276 void radeon_bo_list_add_object(struct radeon_bo_list *lobj,
 277                                 struct list_head *head)
 278 {
 279         if (lobj->wdomain) {
 280                 list_add(&lobj->list, head);
 281         } else {
 282                 list_add_tail(&lobj->list, head);
 283         }
 284 }
 285
 286 int radeon_bo_list_reserve(struct list_head *head)
 287 {
 288         struct radeon_bo_list *lobj;
 289         int r;
 290
 291         list_for_each_entry(lobj, head, list){
 292                 r = radeon_bo_reserve(lobj->bo, false);
 293                 if (unlikely(r != 0))
 294                         return r;
 295         }
 296         return 0;
 297 }
 298
 299 void radeon_bo_list_unreserve(struct list_head *head)
 300 {
 301         struct radeon_bo_list *lobj;
 302
 303         list_for_each_entry(lobj, head, list) {
 304                 /* only unreserve object we successfully reserved */
 305                 if (radeon_bo_is_reserved(lobj->bo))
 306                         radeon_bo_unreserve(lobj->bo);
 307         }
 308 }
 309
 310 int radeon_bo_list_validate(struct list_head *head)
 311 {
 312         struct radeon_bo_list *lobj;
 313         struct radeon_bo *bo;
 314         int r;
 315
 316         r = radeon_bo_list_reserve(head);
 317         if (unlikely(r != 0)) {
 318                 return r;
 319         }
 320         list_for_each_entry(lobj, head, list) {
 321                 bo = lobj->bo;
 322                 if (!bo->pin_count) {
 323                         if (lobj->wdomain) {
 324                                 radeon_ttm_placement_from_domain(bo,
 325                                                                 lobj->wdomain);
 326                         } else {
 327                                 radeon_ttm_placement_from_domain(bo,
 328                                                                 lobj->rdomain);
 329                         }
 330                         r = ttm_bo_validate(&bo->tbo, &bo->placement,
 331                                                 true, false);
 332                         if (unlikely(r))
 333                                 return r;
 334                 }
 335                 lobj->gpu_offset = radeon_bo_gpu_offset(bo);
 336                 lobj->tiling_flags = bo->tiling_flags;
 337         }
 338         return 0;
 339 }
 340
 341 void radeon_bo_list_fence(struct list_head *head, void *fence)
 342 {
 343         struct radeon_bo_list *lobj;
 344         struct radeon_bo *bo;
 345         struct radeon_fence *old_fence = NULL;
 346
 347         list_for_each_entry(lobj, head, list) {
 348                 bo = lobj->bo;
 349                 spin_lock(&bo->tbo.lock);
 350                 old_fence = (struct radeon_fence *)bo->tbo.sync_obj;
 351                 bo->tbo.sync_obj = radeon_fence_ref(fence);
 352                 bo->tbo.sync_obj_arg = NULL;
 353                 spin_unlock(&bo->tbo.lock);
 354                 if (old_fence) {
 355                         radeon_fence_unref(&old_fence);
 356                 }
 357         }
 358 }
 359
 360 int radeon_bo_fbdev_mmap(struct radeon_bo *bo,
 361                              struct vm_area_struct *vma)
 362 {
 363         return ttm_fbdev_mmap(vma, &bo->tbo);
 364 }
 365
 366 int radeon_bo_get_surface_reg(struct radeon_bo *bo)
 367 {
 368         struct radeon_device *rdev = bo->rdev;
 369         struct radeon_surface_reg *reg;
 370         struct radeon_bo *old_object;
 371         int steal;
 372         int i;
 373
 374         BUG_ON(!atomic_read(&bo->tbo.reserved));
 375
 376         if (!bo->tiling_flags)
 377                 return 0;
 378
 379         if (bo->surface_reg >= 0) {
 380                 reg = &rdev->surface_regs[bo->surface_reg];
 381                 i = bo->surface_reg;
 382                 goto out;
 383         }
 384
 385         steal = -1;
 386         for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
 387
 388                 reg = &rdev->surface_regs[i];
 389                 if (!reg->bo)
 390                         break;
 391
 392                 old_object = reg->bo;
 393                 if (old_object->pin_count == 0)
 394                         steal = i;
 395         }
 396
 397         /* if we are all out */
 398         if (i == RADEON_GEM_MAX_SURFACES) {
 399                 if (steal == -1)
 400                         return -ENOMEM;
 401                 /* find someone with a surface reg and nuke their BO */
 402                 reg = &rdev->surface_regs[steal];
 403                 old_object = reg->bo;
 404                 /* blow away the mapping */
 405                 DRM_DEBUG("stealing surface reg %d from %p\n", steal, old_object);
 406                 ttm_bo_unmap_virtual(&old_object->tbo);
 407                 old_object->surface_reg = -1;
 408                 i = steal;
 409         }
 410
 411         bo->surface_reg = i;
 412         reg->bo = bo;
 413
 414 out:
 415         radeon_set_surface_reg(rdev, i, bo->tiling_flags, bo->pitch,
 416                                bo->tbo.mem.mm_node->start << PAGE_SHIFT,
 417                                bo->tbo.num_pages << PAGE_SHIFT);
 418         return 0;
 419 }
 420
 421 static void radeon_bo_clear_surface_reg(struct radeon_bo *bo)
 422 {
 423         struct radeon_device *rdev = bo->rdev;
 424         struct radeon_surface_reg *reg;
 425
 426         if (bo->surface_reg == -1)
 427                 return;
 428
 429         reg = &rdev->surface_regs[bo->surface_reg];
 430         radeon_clear_surface_reg(rdev, bo->surface_reg);
 431
 432         reg->bo = NULL;
 433         bo->surface_reg = -1;
 434 }
 435
 436 int radeon_bo_set_tiling_flags(struct radeon_bo *bo,
 437                                 uint32_t tiling_flags, uint32_t pitch)
 438 {
 439         int r;
 440
 441         r = radeon_bo_reserve(bo, false);
 442         if (unlikely(r != 0))
 443                 return r;
 444         bo->tiling_flags = tiling_flags;
 445         bo->pitch = pitch;
 446         radeon_bo_unreserve(bo);
 447         return 0;
 448 }
 449
 450 void radeon_bo_get_tiling_flags(struct radeon_bo *bo,
 451                                 uint32_t *tiling_flags,
 452                                 uint32_t *pitch)
 453 {
 454         BUG_ON(!atomic_read(&bo->tbo.reserved));
 455         if (tiling_flags)
 456                 *tiling_flags = bo->tiling_flags;
 457         if (pitch)
 458                 *pitch = bo->pitch;
 459 }
 460
 461 int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
 462                                 bool force_drop)
 463 {
 464         BUG_ON(!atomic_read(&bo->tbo.reserved));
 465
 466         if (!(bo->tiling_flags & RADEON_TILING_SURFACE))
 467                 return 0;
 468
 469         if (force_drop) {
 470                 radeon_bo_clear_surface_reg(bo);
 471                 return 0;
 472         }
 473
 474         if (bo->tbo.mem.mem_type != TTM_PL_VRAM) {
 475                 if (!has_moved)
 476                         return 0;
 477
 478                 if (bo->surface_reg >= 0)
 479                         radeon_bo_clear_surface_reg(bo);
 480                 return 0;
 481         }
 482
 483         if ((bo->surface_reg >= 0) && !has_moved)
 484                 return 0;
 485
 486         return radeon_bo_get_surface_reg(bo);
 487 }
 488
 489 void radeon_bo_move_notify(struct ttm_buffer_object *bo,
 490                            struct ttm_mem_reg *mem)
 491 {
 492         struct radeon_bo *rbo;
 493         if (!radeon_ttm_bo_is_radeon_bo(bo))
 494                 return;
 495         rbo = container_of(bo, struct radeon_bo, tbo);
 496         radeon_bo_check_tiling(rbo, 0, 1);
 497 }
 498
 499 void radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 500 {
 501         struct radeon_bo *rbo;
 502         if (!radeon_ttm_bo_is_radeon_bo(bo))
 503                 return;
 504         rbo = container_of(bo, struct radeon_bo, tbo);
 505         radeon_bo_check_tiling(rbo, 0, 0);
 506 }