kernel/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_drm.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                 node->memtype = (nvbo->tile_flags & 0xff00) >> 8;
 168                 break;
 169         default:
 170                 NV_WARN(drm, "%s: unhandled family type %x\n", __func__,
 171                         drm->device.info.family);
 172                 break;
 173         }
 174
 175         mem->mm_node = node;
 176         mem->start   = 0;
 177         return 0;
 178 }
 179
 180 static void
 181 nouveau_gart_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
 182 {
 183 }
 184
 185 const struct ttm_mem_type_manager_func nouveau_gart_manager = {
 186         nouveau_gart_manager_init,
 187         nouveau_gart_manager_fini,
 188         nouveau_gart_manager_new,
 189         nouveau_gart_manager_del,
 190         nouveau_gart_manager_debug
 191 };
 192
 193 /*XXX*/
 194 #include <subdev/mmu/nv04.h>
 195 static int
 196 nv04_gart_manager_init(struct ttm_mem_type_manager *man, unsigned long psize)
 197 {
 198         struct nouveau_drm *drm = nouveau_bdev(man->bdev);
 199         struct nvkm_mmu *mmu = nvxx_mmu(&drm->device);
 200         struct nv04_mmu *priv = (void *)mmu;
 201         struct nvkm_vm *vm = NULL;
 202         nvkm_vm_ref(priv->vm, &vm, NULL);
 203         man->priv = vm;
 204         return 0;
 205 }
 206
 207 static int
 208 nv04_gart_manager_fini(struct ttm_mem_type_manager *man)
 209 {
 210         struct nvkm_vm *vm = man->priv;
 211         nvkm_vm_ref(NULL, &vm, NULL);
 212         man->priv = NULL;
 213         return 0;
 214 }
 215
 216 static void
 217 nv04_gart_manager_del(struct ttm_mem_type_manager *man, struct ttm_mem_reg *mem)
 218 {
 219         struct nvkm_mem *node = mem->mm_node;
 220         if (node->vma[0].node)
 221                 nvkm_vm_put(&node->vma[0]);
 222         kfree(mem->mm_node);
 223         mem->mm_node = NULL;
 224 }
 225
 226 static int
 227 nv04_gart_manager_new(struct ttm_mem_type_manager *man,
 228                       struct ttm_buffer_object *bo,
 229                       const struct ttm_place *place,
 230                       struct ttm_mem_reg *mem)
 231 {
 232         struct nvkm_mem *node;
 233         int ret;
 234
 235         node = kzalloc(sizeof(*node), GFP_KERNEL);
 236         if (!node)
 237                 return -ENOMEM;
 238
 239         node->page_shift = 12;
 240
 241         ret = nvkm_vm_get(man->priv, mem->num_pages << 12, node->page_shift,
 242                           NV_MEM_ACCESS_RW, &node->vma[0]);
 243         if (ret) {
 244                 kfree(node);
 245                 return ret;
 246         }
 247
 248         mem->mm_node = node;
 249         mem->start   = node->vma[0].offset >> PAGE_SHIFT;
 250         return 0;
 251 }
 252
 253 static void
 254 nv04_gart_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
 255 {
 256 }
 257
 258 const struct ttm_mem_type_manager_func nv04_gart_manager = {
 259         nv04_gart_manager_init,
 260         nv04_gart_manager_fini,
 261         nv04_gart_manager_new,
 262         nv04_gart_manager_del,
 263         nv04_gart_manager_debug
 264 };
 265
 266 int
 267 nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
 268 {
 269         struct drm_file *file_priv = filp->private_data;
 270         struct nouveau_drm *drm = nouveau_drm(file_priv->minor->dev);
 271
 272         if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
 273                 return drm_legacy_mmap(filp, vma);
 274
 275         return ttm_bo_mmap(filp, vma, &drm->ttm.bdev);
 276 }
 277
 278 static int
 279 nouveau_ttm_mem_global_init(struct drm_global_reference *ref)
 280 {
 281         return ttm_mem_global_init(ref->object);
 282 }
 283
 284 static void
 285 nouveau_ttm_mem_global_release(struct drm_global_reference *ref)
 286 {
 287         ttm_mem_global_release(ref->object);
 288 }
 289
 290 int
 291 nouveau_ttm_global_init(struct nouveau_drm *drm)
 292 {
 293         struct drm_global_reference *global_ref;
 294         int ret;
 295
 296         global_ref = &drm->ttm.mem_global_ref;
 297         global_ref->global_type = DRM_GLOBAL_TTM_MEM;
 298         global_ref->size = sizeof(struct ttm_mem_global);
 299         global_ref->init = &nouveau_ttm_mem_global_init;
 300         global_ref->release = &nouveau_ttm_mem_global_release;
 301
 302         ret = drm_global_item_ref(global_ref);
 303         if (unlikely(ret != 0)) {
 304                 DRM_ERROR("Failed setting up TTM memory accounting\n");
 305                 drm->ttm.mem_global_ref.release = NULL;
 306                 return ret;
 307         }
 308
 309         drm->ttm.bo_global_ref.mem_glob = global_ref->object;
 310         global_ref = &drm->ttm.bo_global_ref.ref;
 311         global_ref->global_type = DRM_GLOBAL_TTM_BO;
 312         global_ref->size = sizeof(struct ttm_bo_global);
 313         global_ref->init = &ttm_bo_global_init;
 314         global_ref->release = &ttm_bo_global_release;
 315
 316         ret = drm_global_item_ref(global_ref);
 317         if (unlikely(ret != 0)) {
 318                 DRM_ERROR("Failed setting up TTM BO subsystem\n");
 319                 drm_global_item_unref(&drm->ttm.mem_global_ref);
 320                 drm->ttm.mem_global_ref.release = NULL;
 321                 return ret;
 322         }
 323
 324         return 0;
 325 }
 326
 327 void
 328 nouveau_ttm_global_release(struct nouveau_drm *drm)
 329 {
 330         if (drm->ttm.mem_global_ref.release == NULL)
 331                 return;
 332
 333         drm_global_item_unref(&drm->ttm.bo_global_ref.ref);
 334         drm_global_item_unref(&drm->ttm.mem_global_ref);
 335         drm->ttm.mem_global_ref.release = NULL;
 336 }
 337
 338 int
 339 nouveau_ttm_init(struct nouveau_drm *drm)
 340 {
 341         struct nvkm_device *device = nvxx_device(&drm->device);
 342         struct nvkm_pci *pci = device->pci;
 343         struct drm_device *dev = drm->dev;
 344         u8 bits;
 345         int ret;
 346
 347         if (pci && pci->agp.bridge) {
 348                 drm->agp.bridge = pci->agp.bridge;
 349                 drm->agp.base = pci->agp.base;
 350                 drm->agp.size = pci->agp.size;
 351                 drm->agp.cma = pci->agp.cma;
 352         }
 353
 354         bits = nvxx_mmu(&drm->device)->dma_bits;
 355         if (nvxx_device(&drm->device)->func->pci) {
 356                 if (drm->agp.bridge)
 357                         bits = 32;
 358         } else if (device->func->tegra) {
 359                 struct nvkm_device_tegra *tegra = device->func->tegra(device);
 360
 361                 /*
 362                  * If the platform can use a IOMMU, then the addressable DMA
 363                  * space is constrained by the IOMMU bit
 364                  */
 365                 if (tegra->func->iommu_bit)
 366                         bits = min(bits, tegra->func->iommu_bit);
 367
 368         }
 369
 370         ret = dma_set_mask(dev->dev, DMA_BIT_MASK(bits));
 371         if (ret && bits != 32) {
 372                 bits = 32;
 373                 ret = dma_set_mask(dev->dev, DMA_BIT_MASK(bits));
 374         }
 375         if (ret)
 376                 return ret;
 377
 378         ret = dma_set_coherent_mask(dev->dev, DMA_BIT_MASK(bits));
 379         if (ret)
 380                 dma_set_coherent_mask(dev->dev, DMA_BIT_MASK(32));
 381
 382         ret = nouveau_ttm_global_init(drm);
 383         if (ret)
 384                 return ret;
 385
 386         ret = ttm_bo_device_init(&drm->ttm.bdev,
 387                                   drm->ttm.bo_global_ref.ref.object,
 388                                   &nouveau_bo_driver,
 389                                   dev->anon_inode->i_mapping,
 390                                   DRM_FILE_PAGE_OFFSET,
 391                                   bits <= 32 ? true : false);
 392         if (ret) {
 393                 NV_ERROR(drm, "error initialising bo driver, %d\n", ret);
 394                 return ret;
 395         }
 396
 397         /* VRAM init */
 398         drm->gem.vram_available = drm->device.info.ram_user;
 399
 400         ret = ttm_bo_init_mm(&drm->ttm.bdev, TTM_PL_VRAM,
 401                               drm->gem.vram_available >> PAGE_SHIFT);
 402         if (ret) {
 403                 NV_ERROR(drm, "VRAM mm init failed, %d\n", ret);
 404                 return ret;
 405         }
 406
 407         drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1),
 408                                          device->func->resource_size(device, 1));
 409
 410         /* GART init */
 411         if (!drm->agp.bridge) {
 412                 drm->gem.gart_available = nvxx_mmu(&drm->device)->limit;
 413         } else {
 414                 drm->gem.gart_available = drm->agp.size;
 415         }
 416
 417         ret = ttm_bo_init_mm(&drm->ttm.bdev, TTM_PL_TT,
 418                               drm->gem.gart_available >> PAGE_SHIFT);
 419         if (ret) {
 420                 NV_ERROR(drm, "GART mm init failed, %d\n", ret);
 421                 return ret;
 422         }
 423
 424         NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20));
 425         NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20));
 426         return 0;
 427 }
 428
 429 void
 430 nouveau_ttm_fini(struct nouveau_drm *drm)
 431 {
 432         ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_VRAM);
 433         ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_TT);
 434
 435         ttm_bo_device_release(&drm->ttm.bdev);
 436
 437         nouveau_ttm_global_release(drm);
 438
 439         arch_phys_wc_del(drm->ttm.mtrr);
 440         drm->ttm.mtrr = 0;
 441 }