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 void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
  60 {
  61         u32 c = 0;
  62
  63         rbo->placement.fpfn = 0;
  64         rbo->placement.lpfn = 0;
  65         rbo->placement.placement = rbo->placements;
  66         rbo->placement.busy_placement = rbo->placements;
  67         if (domain & RADEON_GEM_DOMAIN_VRAM)
  68                 rbo->placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
  69                                         TTM_PL_FLAG_VRAM;
  70         if (domain & RADEON_GEM_DOMAIN_GTT)
  71                 rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
  72         if (domain & RADEON_GEM_DOMAIN_CPU)
  73                 rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
  74         rbo->placement.num_placement = c;
  75         rbo->placement.num_busy_placement = c;
  76 }
  77
  78 int radeon_bo_create(struct radeon_device *rdev, struct drm_gem_object *gobj,
  79                         unsigned long size, bool kernel, u32 domain,
  80                         struct radeon_bo **bo_ptr)
  81 {
  82         struct radeon_bo *bo;
  83         enum ttm_bo_type type;
  84         int r;
  85
  86         if (unlikely(rdev->mman.bdev.dev_mapping == NULL)) {
  87                 rdev->mman.bdev.dev_mapping = rdev->ddev->dev_mapping;
  88         }
  89         if (kernel) {
  90                 type = ttm_bo_type_kernel;
  91         } else {
  92                 type = ttm_bo_type_device;
  93         }
  94         *bo_ptr = NULL;
  95         bo = kzalloc(sizeof(struct radeon_bo), GFP_KERNEL);
  96         if (bo == NULL)
  97                 return -ENOMEM;
  98         bo->rdev = rdev;
  99         bo->gobj = gobj;
 100         bo->surface_reg = -1;
 101         INIT_LIST_HEAD(&bo->list);
 102
 103         radeon_ttm_placement_from_domain(bo, domain);
 104         /* Kernel allocation are uninterruptible */
 105         r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
 106                         &bo->placement, 0, 0, !kernel, NULL, size,
 107                         &radeon_ttm_bo_destroy);
 108         if (unlikely(r != 0)) {
 109                 if (r != -ERESTARTSYS)
 110                         dev_err(rdev->dev,
 111                                 "object_init failed for (%lu, 0x%08X)\n",
 112                                 size, domain);
 113                 return r;
 114         }
 115         *bo_ptr = bo;
 116         if (gobj) {
 117                 mutex_lock(&bo->rdev->gem.mutex);
 118                 list_add_tail(&bo->list, &rdev->gem.objects);
 119                 mutex_unlock(&bo->rdev->gem.mutex);
 120         }
 121         return 0;
 122 }
 123
 124 int radeon_bo_kmap(struct radeon_bo *bo, void **ptr)
 125 {
 126         bool is_iomem;
 127         int r;
 128
 129         if (bo->kptr) {
 130                 if (ptr) {
 131                         *ptr = bo->kptr;
 132                 }
 133                 return 0;
 134         }
 135         r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
 136         if (r) {
 137                 return r;
 138         }
 139         bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
 140         if (ptr) {
 141                 *ptr = bo->kptr;
 142         }
 143         radeon_bo_check_tiling(bo, 0, 0);
 144         return 0;
 145 }
 146
 147 void radeon_bo_kunmap(struct radeon_bo *bo)
 148 {
 149         if (bo->kptr == NULL)
 150                 return;
 151         bo->kptr = NULL;
 152         radeon_bo_check_tiling(bo, 0, 0);
 153         ttm_bo_kunmap(&bo->kmap);
 154 }
 155
 156 void radeon_bo_unref(struct radeon_bo **bo)
 157 {
 158         struct ttm_buffer_object *tbo;
 159
 160         if ((*bo) == NULL)
 161                 return;
 162         tbo = &((*bo)->tbo);
 163         ttm_bo_unref(&tbo);
 164         if (tbo == NULL)
 165                 *bo = NULL;
 166 }
 167
 168 int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr)
 169 {
 170         int r, i;
 171
 172         radeon_ttm_placement_from_domain(bo, domain);
 173         if (bo->pin_count) {
 174                 bo->pin_count++;
 175                 if (gpu_addr)
 176                         *gpu_addr = radeon_bo_gpu_offset(bo);
 177                 return 0;
 178         }
 179         radeon_ttm_placement_from_domain(bo, domain);
 180         for (i = 0; i < bo->placement.num_placement; i++)
 181                 bo->placements[i] |= TTM_PL_FLAG_NO_EVICT;
 182         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 183         if (likely(r == 0)) {
 184                 bo->pin_count = 1;
 185                 if (gpu_addr != NULL)
 186                         *gpu_addr = radeon_bo_gpu_offset(bo);
 187         }
 188         if (unlikely(r != 0))
 189                 dev_err(bo->rdev->dev, "%p pin failed\n", bo);
 190         return r;
 191 }
 192
 193 int radeon_bo_unpin(struct radeon_bo *bo)
 194 {
 195         int r, i;
 196
 197         if (!bo->pin_count) {
 198                 dev_warn(bo->rdev->dev, "%p unpin not necessary\n", bo);
 199                 return 0;
 200         }
 201         bo->pin_count--;
 202         if (bo->pin_count)
 203                 return 0;
 204         for (i = 0; i < bo->placement.num_placement; i++)
 205                 bo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT;
 206         r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 207         if (unlikely(r != 0))
 208                 dev_err(bo->rdev->dev, "%p validate failed for unpin\n", bo);
 209         return r;
 210 }
 211
 212 int radeon_bo_evict_vram(struct radeon_device *rdev)
 213 {
 214         if (rdev->flags & RADEON_IS_IGP) {
 215                 /* Useless to evict on IGP chips */
 216                 return 0;
 217         }
 218         return ttm_bo_evict_mm(&rdev->mman.bdev, TTM_PL_VRAM);
 219 }
 220
 221 void radeon_bo_force_delete(struct radeon_device *rdev)
 222 {
 223         struct radeon_bo *bo, *n;
 224         struct drm_gem_object *gobj;
 225
 226         if (list_empty(&rdev->gem.objects)) {
 227                 return;
 228         }
 229         dev_err(rdev->dev, "Userspace still has active objects !\n");
 230         list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) {
 231                 mutex_lock(&rdev->ddev->struct_mutex);
 232                 gobj = bo->gobj;
 233                 dev_err(rdev->dev, "%p %p %lu %lu force free\n",
 234                         gobj, bo, (unsigned long)gobj->size,
 235                         *((unsigned long *)&gobj->refcount));
 236                 mutex_lock(&bo->rdev->gem.mutex);
 237                 list_del_init(&bo->list);
 238                 mutex_unlock(&bo->rdev->gem.mutex);
 239                 radeon_bo_unref(&bo);
 240                 gobj->driver_private = NULL;
 241                 drm_gem_object_unreference(gobj);
 242                 mutex_unlock(&rdev->ddev->struct_mutex);
 243         }
 244 }
 245
 246 int radeon_bo_init(struct radeon_device *rdev)
 247 {
 248         /* Add an MTRR for the VRAM */
 249         rdev->mc.vram_mtrr = mtrr_add(rdev->mc.aper_base, rdev->mc.aper_size,
 250                         MTRR_TYPE_WRCOMB, 1);
 251         DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
 252                 rdev->mc.mc_vram_size >> 20,
 253                 (unsigned long long)rdev->mc.aper_size >> 20);
 254         DRM_INFO("RAM width %dbits %cDR\n",
 255                         rdev->mc.vram_width, rdev->mc.vram_is_ddr ? 'D' : 'S');
 256         return radeon_ttm_init(rdev);
 257 }
 258
 259 void radeon_bo_fini(struct radeon_device *rdev)
 260 {
 261         radeon_ttm_fini(rdev);
 262 }
 263
 264 void radeon_bo_list_add_object(struct radeon_bo_list *lobj,
 265                                 struct list_head *head)
 266 {
 267         if (lobj->wdomain) {
 268                 list_add(&lobj->list, head);
 269         } else {
 270                 list_add_tail(&lobj->list, head);
 271         }
 272 }
 273
 274 int radeon_bo_list_reserve(struct list_head *head)
 275 {
 276         struct radeon_bo_list *lobj;
 277         int r;
 278
 279         list_for_each_entry(lobj, head, list){
 280                 r = radeon_bo_reserve(lobj->bo, false);
 281                 if (unlikely(r != 0))
 282                         return r;
 283         }
 284         return 0;
 285 }
 286
 287 void radeon_bo_list_unreserve(struct list_head *head)
 288 {
 289         struct radeon_bo_list *lobj;
 290
 291         list_for_each_entry(lobj, head, list) {
 292                 /* only unreserve object we successfully reserved */
 293                 if (radeon_bo_is_reserved(lobj->bo))
 294                         radeon_bo_unreserve(lobj->bo);
 295         }
 296 }
 297
 298 int radeon_bo_list_validate(struct list_head *head, void *fence)
 299 {
 300         struct radeon_bo_list *lobj;
 301         struct radeon_bo *bo;
 302         struct radeon_fence *old_fence = NULL;
 303         int r;
 304
 305         r = radeon_bo_list_reserve(head);
 306         if (unlikely(r != 0)) {
 307                 return r;
 308         }
 309         list_for_each_entry(lobj, head, list) {
 310                 bo = lobj->bo;
 311                 if (!bo->pin_count) {
 312                         if (lobj->wdomain) {
 313                                 radeon_ttm_placement_from_domain(bo,
 314                                                                 lobj->wdomain);
 315                         } else {
 316                                 radeon_ttm_placement_from_domain(bo,
 317                                                                 lobj->rdomain);
 318                         }
 319                         r = ttm_bo_validate(&bo->tbo, &bo->placement,
 320                                                 true, false);
 321                         if (unlikely(r))
 322                                 return r;
 323                 }
 324                 lobj->gpu_offset = radeon_bo_gpu_offset(bo);
 325                 lobj->tiling_flags = bo->tiling_flags;
 326                 if (fence) {
 327                         old_fence = (struct radeon_fence *)bo->tbo.sync_obj;
 328                         bo->tbo.sync_obj = radeon_fence_ref(fence);
 329                         bo->tbo.sync_obj_arg = NULL;
 330                 }
 331                 if (old_fence) {
 332                         radeon_fence_unref(&old_fence);
 333                 }
 334         }
 335         return 0;
 336 }
 337
 338 void radeon_bo_list_unvalidate(struct list_head *head, void *fence)
 339 {
 340         struct radeon_bo_list *lobj;
 341         struct radeon_fence *old_fence;
 342
 343         if (fence)
 344                 list_for_each_entry(lobj, head, list) {
 345                         old_fence = to_radeon_fence(lobj->bo->tbo.sync_obj);
 346                         if (old_fence == fence) {
 347                                 lobj->bo->tbo.sync_obj = NULL;
 348                                 radeon_fence_unref(&old_fence);
 349                         }
 350                 }
 351         radeon_bo_list_unreserve(head);
 352 }
 353
 354 int radeon_bo_fbdev_mmap(struct radeon_bo *bo,
 355                              struct vm_area_struct *vma)
 356 {
 357         return ttm_fbdev_mmap(vma, &bo->tbo);
 358 }
 359
 360 int radeon_bo_get_surface_reg(struct radeon_bo *bo)
 361 {
 362         struct radeon_device *rdev = bo->rdev;
 363         struct radeon_surface_reg *reg;
 364         struct radeon_bo *old_object;
 365         int steal;
 366         int i;
 367
 368         BUG_ON(!atomic_read(&bo->tbo.reserved));
 369
 370         if (!bo->tiling_flags)
 371                 return 0;
 372
 373         if (bo->surface_reg >= 0) {
 374                 reg = &rdev->surface_regs[bo->surface_reg];
 375                 i = bo->surface_reg;
 376                 goto out;
 377         }
 378
 379         steal = -1;
 380         for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
 381
 382                 reg = &rdev->surface_regs[i];
 383                 if (!reg->bo)
 384                         break;
 385
 386                 old_object = reg->bo;
 387                 if (old_object->pin_count == 0)
 388                         steal = i;
 389         }
 390
 391         /* if we are all out */
 392         if (i == RADEON_GEM_MAX_SURFACES) {
 393                 if (steal == -1)
 394                         return -ENOMEM;
 395                 /* find someone with a surface reg and nuke their BO */
 396                 reg = &rdev->surface_regs[steal];
 397                 old_object = reg->bo;
 398                 /* blow away the mapping */
 399                 DRM_DEBUG("stealing surface reg %d from %p\n", steal, old_object);
 400                 ttm_bo_unmap_virtual(&old_object->tbo);
 401                 old_object->surface_reg = -1;
 402                 i = steal;
 403         }
 404
 405         bo->surface_reg = i;
 406         reg->bo = bo;
 407
 408 out:
 409         radeon_set_surface_reg(rdev, i, bo->tiling_flags, bo->pitch,
 410                                bo->tbo.mem.mm_node->start << PAGE_SHIFT,
 411                                bo->tbo.num_pages << PAGE_SHIFT);
 412         return 0;
 413 }
 414
 415 static void radeon_bo_clear_surface_reg(struct radeon_bo *bo)
 416 {
 417         struct radeon_device *rdev = bo->rdev;
 418         struct radeon_surface_reg *reg;
 419
 420         if (bo->surface_reg == -1)
 421                 return;
 422
 423         reg = &rdev->surface_regs[bo->surface_reg];
 424         radeon_clear_surface_reg(rdev, bo->surface_reg);
 425
 426         reg->bo = NULL;
 427         bo->surface_reg = -1;
 428 }
 429
 430 int radeon_bo_set_tiling_flags(struct radeon_bo *bo,
 431                                 uint32_t tiling_flags, uint32_t pitch)
 432 {
 433         int r;
 434
 435         r = radeon_bo_reserve(bo, false);
 436         if (unlikely(r != 0))
 437                 return r;
 438         bo->tiling_flags = tiling_flags;
 439         bo->pitch = pitch;
 440         radeon_bo_unreserve(bo);
 441         return 0;
 442 }
 443
 444 void radeon_bo_get_tiling_flags(struct radeon_bo *bo,
 445                                 uint32_t *tiling_flags,
 446                                 uint32_t *pitch)
 447 {
 448         BUG_ON(!atomic_read(&bo->tbo.reserved));
 449         if (tiling_flags)
 450                 *tiling_flags = bo->tiling_flags;
 451         if (pitch)
 452                 *pitch = bo->pitch;
 453 }
 454
 455 int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
 456                                 bool force_drop)
 457 {
 458         BUG_ON(!atomic_read(&bo->tbo.reserved));
 459
 460         if (!(bo->tiling_flags & RADEON_TILING_SURFACE))
 461                 return 0;
 462
 463         if (force_drop) {
 464                 radeon_bo_clear_surface_reg(bo);
 465                 return 0;
 466         }
 467
 468         if (bo->tbo.mem.mem_type != TTM_PL_VRAM) {
 469                 if (!has_moved)
 470                         return 0;
 471
 472                 if (bo->surface_reg >= 0)
 473                         radeon_bo_clear_surface_reg(bo);
 474                 return 0;
 475         }
 476
 477         if ((bo->surface_reg >= 0) && !has_moved)
 478                 return 0;
 479
 480         return radeon_bo_get_surface_reg(bo);
 481 }
 482
 483 void radeon_bo_move_notify(struct ttm_buffer_object *bo,
 484                                 struct ttm_mem_reg *mem)
 485 {
 486         struct radeon_bo *rbo = container_of(bo, struct radeon_bo, tbo);
 487         radeon_bo_check_tiling(rbo, 0, 1);
 488 }
 489
 490 void radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 491 {
 492         struct radeon_bo *rbo = container_of(bo, struct radeon_bo, tbo);
 493         radeon_bo_check_tiling(rbo, 0, 0);
 494 }