drivers/gpu/drm/nouveau/nouveau_ttm.c

   1 /*
   2  * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA,
   3  * All Rights Reserved.
   4  * Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA,
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sub license,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 #include "nouveau_drv.h"
  28 #include "nouveau_ttm.h"
  29 #include "nouveau_gem.h"
  30
  31 #include "drm_legacy.h"
  32
  33 #include <core/tegra.h>
  34
  35 static int
  36 nouveau_vram_manager_init(struct ttm_mem_type_manager *man, unsigned long psize)
  37 {
  38         struct nouveau_drm *drm = nouveau_bdev(man->bdev);
  39         struct nvkm_fb *fb = nvxx_fb(&drm->device);
  40         man->priv = fb;
  41         return 0;
  42 }
  43
  44 static int
  45 nouveau_vram_manager_fini(struct ttm_mem_type_manager *man)
  46 {
  47         man->priv = NULL;
  48         return 0;
  49 }
  50
  51 static inline void
  52 nvkm_mem_node_cleanup(struct nvkm_mem *node)
  53 {
  54         if (node->vma[0].node) {
  55                 nvkm_vm_unmap(&node->vma[0]);
  56                 nvkm_vm_put(&node->vma[0]);
  57         }
  58
  59         if (node->vma[1].node) {
  60                 nvkm_vm_unmap(&node->vma[1]);
  61                 nvkm_vm_put(&node->vma[1]);
  62         }
  63 }
  64
  65 static void
  66 nouveau_vram_manager_del(struct ttm_mem_type_manager *man,
  67                          struct ttm_mem_reg *mem)
  68 {
  69         struct nouveau_drm *drm = nouveau_bdev(man->bdev);
  70         struct nvkm_ram *ram = nvxx_fb(&drm->device)->ram;
  71         nvkm_mem_node_cleanup(mem->mm_node);
  72         ram->func->put(ram, (struct nvkm_mem **)&mem->mm_node);
  73 }
  74
  75 static int
  76 nouveau_vram_manager_new(struct ttm_mem_type_manager *man,
  77                          struct ttm_buffer_object *bo,
  78                          const struct ttm_place *place,
  79                          struct ttm_mem_reg *mem)
  80 {
  81         struct nouveau_drm *drm = nouveau_bdev(man->bdev);
  82         struct nvkm_ram *ram = nvxx_fb(&drm->device)->ram;
  83         struct nouveau_bo *nvbo = nouveau_bo(bo);
  84         struct nvkm_mem *node;
  85         u32 size_nc = 0;
  86         int ret;
  87
  88         if (drm->device.info.ram_size == 0)
  89                 return -ENOMEM;
  90
  91         if (nvbo->tile_flags & NOUVEAU_GEM_TILE_NONCONTIG)
  92                 size_nc = 1 << nvbo->page_shift;
  93
  94         ret = ram->func->get(ram, mem->num_pages << PAGE_SHIFT,
  95                              mem->page_alignment << PAGE_SHIFT, size_nc,
  96                              (nvbo->tile_flags >> 8) & 0x3ff, &node);
  97         if (ret) {
  98                 mem->mm_node = NULL;
  99                 return (ret == -ENOSPC) ? 0 : ret;
 100         }
 101
 102         node->page_shift = nvbo->page_shift;
 103
 104         mem->mm_node = node;
 105         mem->start   = node->offset >> PAGE_SHIFT;
 106         return 0;
 107 }
 108
 109 const struct ttm_mem_type_manager_func nouveau_vram_manager = {
 110         nouveau_vram_manager_init,
 111         nouveau_vram_manager_fini,
 112         nouveau_vram_manager_new,
 113         nouveau_vram_manager_del,
 114 };
 115
 116 static int
 117 nouveau_gart_manager_init(struct ttm_mem_type_manager *man, unsigned long psize)
 118 {
 119         return 0;
 120 }
 121
 122 static int
 123 nouveau_gart_manager_fini(struct ttm_mem_type_manager *man)
 124 {
 125         return 0;
 126 }
 127
 128 static void
 129 nouveau_gart_manager_del(struct ttm_mem_type_manager *man,
 130                          struct ttm_mem_reg *mem)
 131 {
 132         nvkm_mem_node_cleanup(mem->mm_node);
 133         kfree(mem->mm_node);
 134         mem->mm_node = NULL;
 135 }
 136
 137 static int
 138 nouveau_gart_manager_new(struct ttm_mem_type_manager *man,
 139                          struct ttm_buffer_object *bo,
 140                          const struct ttm_place *place,
 141                          struct ttm_mem_reg *mem)
 142 {
 143         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
 144         struct nouveau_bo *nvbo = nouveau_bo(bo);
 145         struct nvkm_mem *node;
 146
 147         node = kzalloc(sizeof(*node), GFP_KERNEL);
 148         if (!node)
 149                 return -ENOMEM;
 150
 151         node->page_shift = 12;
 152
 153         switch (drm->device.info.family) {
 154         case NV_DEVICE_INFO_V0_TNT:
 155         case NV_DEVICE_INFO_V0_CELSIUS:
 156         case NV_DEVICE_INFO_V0_KELVIN:
 157         case NV_DEVICE_INFO_V0_RANKINE:
 158         case NV_DEVICE_INFO_V0_CURIE:
 159                 break;
 160         case NV_DEVICE_INFO_V0_TESLA:
 161                 if (drm->device.info.chipset != 0x50)
 162                         node->memtype = (nvbo->tile_flags & 0x7f00) >> 8;
 163                 break;
 164         case NV_DEVICE_INFO_V0_FERMI:
 165         case NV_DEVICE_INFO_V0_KEPLER:
 166         case NV_DEVICE_INFO_V0_MAXWELL:
 167         case NV_DEVICE_INFO_V0_PASCAL:
 168                 node->memtype = (nvbo->tile_flags & 0xff00) >> 8;
 169                 break;
 170         default:
 171                 NV_WARN(drm, "%s: unhandled family type %x\n", __func__,
 172                         drm->device.info.family);
 173                 break;
 174         }
 175
 176         mem->mm_node = node;
 177         mem->start   = 0;
 178         return 0;
 179 }
 180
 181 static void
 182 nouveau_gart_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
 183 {
 184 }
 185
 186 const struct ttm_mem_type_manager_func nouveau_gart_manager = {
 187         nouveau_gart_manager_init,
 188         nouveau_gart_manager_fini,
 189         nouveau_gart_manager_new,
 190         nouveau_gart_manager_del,
 191         nouveau_gart_manager_debug
 192 };
 193
 194 /*XXX*/
 195 #include <subdev/mmu/nv04.h>
 196 static int
 197 nv04_gart_manager_init(struct ttm_mem_type_manager *man, unsigned long psize)
 198 {
 199         struct nouveau_drm *drm = nouveau_bdev(man->bdev);
 200         struct nvkm_mmu *mmu = nvxx_mmu(&drm->device);
 201         struct nv04_mmu *priv = (void *)mmu;
 202         struct nvkm_vm *vm = NULL;
 203         nvkm_vm_ref(priv->vm, &vm, NULL);
 204         man->priv = vm;
 205         return 0;
 206 }
 207
 208 static int
 209 nv04_gart_manager_fini(struct ttm_mem_type_manager *man)
 210 {
 211         struct nvkm_vm *vm = man->priv;
 212         nvkm_vm_ref(NULL, &vm, NULL);
 213         man->priv = NULL;
 214         return 0;
 215 }
 216
 217 static void
 218 nv04_gart_manager_del(struct ttm_mem_type_manager *man, struct ttm_mem_reg *mem)
 219 {
 220         struct nvkm_mem *node = mem->mm_node;
 221         if (node->vma[0].node)
 222                 nvkm_vm_put(&node->vma[0]);
 223         kfree(mem->mm_node);
 224         mem->mm_node = NULL;
 225 }
 226
 227 static int
 228 nv04_gart_manager_new(struct ttm_mem_type_manager *man,
 229                       struct ttm_buffer_object *bo,
 230                       const struct ttm_place *place,
 231                       struct ttm_mem_reg *mem)
 232 {
 233         struct nvkm_mem *node;
 234         int ret;
 235
 236         node = kzalloc(sizeof(*node), GFP_KERNEL);
 237         if (!node)
 238                 return -ENOMEM;
 239
 240         node->page_shift = 12;
 241
 242         ret = nvkm_vm_get(man->priv, mem->num_pages << 12, node->page_shift,
 243                           NV_MEM_ACCESS_RW, &node->vma[0]);
 244         if (ret) {
 245                 kfree(node);
 246                 return ret;
 247         }
 248
 249         mem->mm_node = node;
 250         mem->start   = node->vma[0].offset >> PAGE_SHIFT;
 251         return 0;
 252 }
 253
 254 static void
 255 nv04_gart_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
 256 {
 257 }
 258
 259 const struct ttm_mem_type_manager_func nv04_gart_manager = {
 260         nv04_gart_manager_init,
 261         nv04_gart_manager_fini,
 262         nv04_gart_manager_new,
 263         nv04_gart_manager_del,
 264         nv04_gart_manager_debug
 265 };
 266
 267 int
 268 nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
 269 {
 270         struct drm_file *file_priv = filp->private_data;
 271         struct nouveau_drm *drm = nouveau_drm(file_priv->minor->dev);
 272
 273         if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
 274                 return drm_legacy_mmap(filp, vma);
 275
 276         return ttm_bo_mmap(filp, vma, &drm->ttm.bdev);
 277 }
 278
 279 static int
 280 nouveau_ttm_mem_global_init(struct drm_global_reference *ref)
 281 {
 282         return ttm_mem_global_init(ref->object);
 283 }
 284
 285 static void
 286 nouveau_ttm_mem_global_release(struct drm_global_reference *ref)
 287 {
 288         ttm_mem_global_release(ref->object);
 289 }
 290
 291 int
 292 nouveau_ttm_global_init(struct nouveau_drm *drm)
 293 {
 294         struct drm_global_reference *global_ref;
 295         int ret;
 296
 297         global_ref = &drm->ttm.mem_global_ref;
 298         global_ref->global_type = DRM_GLOBAL_TTM_MEM;
 299         global_ref->size = sizeof(struct ttm_mem_global);
 300         global_ref->init = &nouveau_ttm_mem_global_init;
 301         global_ref->release = &nouveau_ttm_mem_global_release;
 302
 303         ret = drm_global_item_ref(global_ref);
 304         if (unlikely(ret != 0)) {
 305                 DRM_ERROR("Failed setting up TTM memory accounting\n");
 306                 drm->ttm.mem_global_ref.release = NULL;
 307                 return ret;
 308         }
 309
 310         drm->ttm.bo_global_ref.mem_glob = global_ref->object;
 311         global_ref = &drm->ttm.bo_global_ref.ref;
 312         global_ref->global_type = DRM_GLOBAL_TTM_BO;
 313         global_ref->size = sizeof(struct ttm_bo_global);
 314         global_ref->init = &ttm_bo_global_init;
 315         global_ref->release = &ttm_bo_global_release;
 316
 317         ret = drm_global_item_ref(global_ref);
 318         if (unlikely(ret != 0)) {
 319                 DRM_ERROR("Failed setting up TTM BO subsystem\n");
 320                 drm_global_item_unref(&drm->ttm.mem_global_ref);
 321                 drm->ttm.mem_global_ref.release = NULL;
 322                 return ret;
 323         }
 324
 325         return 0;
 326 }
 327
 328 void
 329 nouveau_ttm_global_release(struct nouveau_drm *drm)
 330 {
 331         if (drm->ttm.mem_global_ref.release == NULL)
 332                 return;
 333
 334         drm_global_item_unref(&drm->ttm.bo_global_ref.ref);
 335         drm_global_item_unref(&drm->ttm.mem_global_ref);
 336         drm->ttm.mem_global_ref.release = NULL;
 337 }
 338
 339 int
 340 nouveau_ttm_init(struct nouveau_drm *drm)
 341 {
 342         struct nvkm_device *device = nvxx_device(&drm->device);
 343         struct nvkm_pci *pci = device->pci;
 344         struct drm_device *dev = drm->dev;
 345         u8 bits;
 346         int ret;
 347
 348         if (pci && pci->agp.bridge) {
 349                 drm->agp.bridge = pci->agp.bridge;
 350                 drm->agp.base = pci->agp.base;
 351                 drm->agp.size = pci->agp.size;
 352                 drm->agp.cma = pci->agp.cma;
 353         }
 354
 355         bits = nvxx_mmu(&drm->device)->dma_bits;
 356         if (nvxx_device(&drm->device)->func->pci) {
 357                 if (drm->agp.bridge)
 358                         bits = 32;
 359         } else if (device->func->tegra) {
 360                 struct nvkm_device_tegra *tegra = device->func->tegra(device);
 361
 362                 /*
 363                  * If the platform can use a IOMMU, then the addressable DMA
 364                  * space is constrained by the IOMMU bit
 365                  */
 366                 if (tegra->func->iommu_bit)
 367                         bits = min(bits, tegra->func->iommu_bit);
 368
 369         }
 370
 371         ret = dma_set_mask(dev->dev, DMA_BIT_MASK(bits));
 372         if (ret && bits != 32) {
 373                 bits = 32;
 374                 ret = dma_set_mask(dev->dev, DMA_BIT_MASK(bits));
 375         }
 376         if (ret)
 377                 return ret;
 378
 379         ret = dma_set_coherent_mask(dev->dev, DMA_BIT_MASK(bits));
 380         if (ret)
 381                 dma_set_coherent_mask(dev->dev, DMA_BIT_MASK(32));
 382
 383         ret = nouveau_ttm_global_init(drm);
 384         if (ret)
 385                 return ret;
 386
 387         ret = ttm_bo_device_init(&drm->ttm.bdev,
 388                                   drm->ttm.bo_global_ref.ref.object,
 389                                   &nouveau_bo_driver,
 390                                   dev->anon_inode->i_mapping,
 391                                   DRM_FILE_PAGE_OFFSET,
 392                                   bits <= 32 ? true : false);
 393         if (ret) {
 394                 NV_ERROR(drm, "error initialising bo driver, %d\n", ret);
 395                 return ret;
 396         }
 397
 398         /* VRAM init */
 399         drm->gem.vram_available = drm->device.info.ram_user;
 400
 401         ret = ttm_bo_init_mm(&drm->ttm.bdev, TTM_PL_VRAM,
 402                               drm->gem.vram_available >> PAGE_SHIFT);
 403         if (ret) {
 404                 NV_ERROR(drm, "VRAM mm init failed, %d\n", ret);
 405                 return ret;
 406         }
 407
 408         drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1),
 409                                          device->func->resource_size(device, 1));
 410
 411         /* GART init */
 412         if (!drm->agp.bridge) {
 413                 drm->gem.gart_available = nvxx_mmu(&drm->device)->limit;
 414         } else {
 415                 drm->gem.gart_available = drm->agp.size;
 416         }
 417
 418         ret = ttm_bo_init_mm(&drm->ttm.bdev, TTM_PL_TT,
 419                               drm->gem.gart_available >> PAGE_SHIFT);
 420         if (ret) {
 421                 NV_ERROR(drm, "GART mm init failed, %d\n", ret);
 422                 return ret;
 423         }
 424
 425         NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20));
 426         NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20));
 427         return 0;
 428 }
 429
 430 void
 431 nouveau_ttm_fini(struct nouveau_drm *drm)
 432 {
 433         ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_VRAM);
 434         ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_TT);
 435
 436         ttm_bo_device_release(&drm->ttm.bdev);
 437
 438         nouveau_ttm_global_release(drm);
 439
 440         arch_phys_wc_del(drm->ttm.mtrr);
 441         drm->ttm.mtrr = 0;
 442 }