drivers/gpu/drm/nouveau/nouveau_ttm.c

   1 // SPDX-License-Identifier: GPL-2.0 OR MIT
   2 /*
   3  * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA,
   4  * Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA,
   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, sub license,
  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 (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  20  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  21  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  22  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  23  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25 #include "nouveau_drv.h"
  26 #include "nouveau_gem.h"
  27 #include "nouveau_mem.h"
  28 #include "nouveau_ttm.h"
  29
  30 #include <drm/drm_legacy.h>
  31
  32 #include <core/tegra.h>
  33
  34 static int
  35 nouveau_manager_init(struct ttm_mem_type_manager *man, unsigned long psize)
  36 {
  37         return 0;
  38 }
  39
  40 static int
  41 nouveau_manager_fini(struct ttm_mem_type_manager *man)
  42 {
  43         return 0;
  44 }
  45
  46 static void
  47 nouveau_manager_del(struct ttm_mem_type_manager *man, struct ttm_mem_reg *reg)
  48 {
  49         nouveau_mem_del(reg);
  50 }
  51
  52 static void
  53 nouveau_manager_debug(struct ttm_mem_type_manager *man,
  54                       struct drm_printer *printer)
  55 {
  56 }
  57
  58 static int
  59 nouveau_vram_manager_new(struct ttm_mem_type_manager *man,
  60                          struct ttm_buffer_object *bo,
  61                          const struct ttm_place *place,
  62                          struct ttm_mem_reg *reg)
  63 {
  64         struct nouveau_bo *nvbo = nouveau_bo(bo);
  65         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
  66         struct nouveau_mem *mem;
  67         int ret;
  68
  69         if (drm->client.device.info.ram_size == 0)
  70                 return -ENOMEM;
  71
  72         ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, reg);
  73         mem = nouveau_mem(reg);
  74         if (ret)
  75                 return ret;
  76
  77         ret = nouveau_mem_vram(reg, nvbo->contig, nvbo->page);
  78         if (ret) {
  79                 nouveau_mem_del(reg);
  80                 if (ret == -ENOSPC) {
  81                         reg->mm_node = NULL;
  82                         return 0;
  83                 }
  84                 return ret;
  85         }
  86
  87         return 0;
  88 }
  89
  90 const struct ttm_mem_type_manager_func nouveau_vram_manager = {
  91         .init = nouveau_manager_init,
  92         .takedown = nouveau_manager_fini,
  93         .get_node = nouveau_vram_manager_new,
  94         .put_node = nouveau_manager_del,
  95         .debug = nouveau_manager_debug,
  96 };
  97
  98 static int
  99 nouveau_gart_manager_new(struct ttm_mem_type_manager *man,
 100                          struct ttm_buffer_object *bo,
 101                          const struct ttm_place *place,
 102                          struct ttm_mem_reg *reg)
 103 {
 104         struct nouveau_bo *nvbo = nouveau_bo(bo);
 105         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
 106         struct nouveau_mem *mem;
 107         int ret;
 108
 109         ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, reg);
 110         mem = nouveau_mem(reg);
 111         if (ret)
 112                 return ret;
 113
 114         reg->start = 0;
 115         return 0;
 116 }
 117
 118 const struct ttm_mem_type_manager_func nouveau_gart_manager = {
 119         .init = nouveau_manager_init,
 120         .takedown = nouveau_manager_fini,
 121         .get_node = nouveau_gart_manager_new,
 122         .put_node = nouveau_manager_del,
 123         .debug = nouveau_manager_debug
 124 };
 125
 126 static int
 127 nv04_gart_manager_new(struct ttm_mem_type_manager *man,
 128                       struct ttm_buffer_object *bo,
 129                       const struct ttm_place *place,
 130                       struct ttm_mem_reg *reg)
 131 {
 132         struct nouveau_bo *nvbo = nouveau_bo(bo);
 133         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
 134         struct nouveau_mem *mem;
 135         int ret;
 136
 137         ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, reg);
 138         mem = nouveau_mem(reg);
 139         if (ret)
 140                 return ret;
 141
 142         ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
 143                            reg->num_pages << PAGE_SHIFT, &mem->vma[0]);
 144         if (ret) {
 145                 nouveau_mem_del(reg);
 146                 if (ret == -ENOSPC) {
 147                         reg->mm_node = NULL;
 148                         return 0;
 149                 }
 150                 return ret;
 151         }
 152
 153         reg->start = mem->vma[0].addr >> PAGE_SHIFT;
 154         return 0;
 155 }
 156
 157 const struct ttm_mem_type_manager_func nv04_gart_manager = {
 158         .init = nouveau_manager_init,
 159         .takedown = nouveau_manager_fini,
 160         .get_node = nv04_gart_manager_new,
 161         .put_node = nouveau_manager_del,
 162         .debug = nouveau_manager_debug
 163 };
 164
 165 int
 166 nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
 167 {
 168         struct drm_file *file_priv = filp->private_data;
 169         struct nouveau_drm *drm = nouveau_drm(file_priv->minor->dev);
 170
 171         if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
 172                 return drm_legacy_mmap(filp, vma);
 173
 174         return ttm_bo_mmap(filp, vma, &drm->ttm.bdev);
 175 }
 176
 177 static int
 178 nouveau_ttm_mem_global_init(struct drm_global_reference *ref)
 179 {
 180         return ttm_mem_global_init(ref->object);
 181 }
 182
 183 static void
 184 nouveau_ttm_mem_global_release(struct drm_global_reference *ref)
 185 {
 186         ttm_mem_global_release(ref->object);
 187 }
 188
 189 int
 190 nouveau_ttm_global_init(struct nouveau_drm *drm)
 191 {
 192         struct drm_global_reference *global_ref;
 193         int ret;
 194
 195         global_ref = &drm->ttm.mem_global_ref;
 196         global_ref->global_type = DRM_GLOBAL_TTM_MEM;
 197         global_ref->size = sizeof(struct ttm_mem_global);
 198         global_ref->init = &nouveau_ttm_mem_global_init;
 199         global_ref->release = &nouveau_ttm_mem_global_release;
 200
 201         ret = drm_global_item_ref(global_ref);
 202         if (unlikely(ret != 0)) {
 203                 DRM_ERROR("Failed setting up TTM memory accounting\n");
 204                 drm->ttm.mem_global_ref.release = NULL;
 205                 return ret;
 206         }
 207
 208         drm->ttm.bo_global_ref.mem_glob = global_ref->object;
 209         global_ref = &drm->ttm.bo_global_ref.ref;
 210         global_ref->global_type = DRM_GLOBAL_TTM_BO;
 211         global_ref->size = sizeof(struct ttm_bo_global);
 212         global_ref->init = &ttm_bo_global_init;
 213         global_ref->release = &ttm_bo_global_release;
 214
 215         ret = drm_global_item_ref(global_ref);
 216         if (unlikely(ret != 0)) {
 217                 DRM_ERROR("Failed setting up TTM BO subsystem\n");
 218                 drm_global_item_unref(&drm->ttm.mem_global_ref);
 219                 drm->ttm.mem_global_ref.release = NULL;
 220                 return ret;
 221         }
 222
 223         return 0;
 224 }
 225
 226 void
 227 nouveau_ttm_global_release(struct nouveau_drm *drm)
 228 {
 229         if (drm->ttm.mem_global_ref.release == NULL)
 230                 return;
 231
 232         drm_global_item_unref(&drm->ttm.bo_global_ref.ref);
 233         drm_global_item_unref(&drm->ttm.mem_global_ref);
 234         drm->ttm.mem_global_ref.release = NULL;
 235 }
 236
 237 static int
 238 nouveau_ttm_init_host(struct nouveau_drm *drm, u8 kind)
 239 {
 240         struct nvif_mmu *mmu = &drm->client.mmu;
 241         int typei;
 242
 243         typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE |
 244                                             kind | NVIF_MEM_COHERENT);
 245         if (typei < 0)
 246                 return -ENOSYS;
 247
 248         drm->ttm.type_host[!!kind] = typei;
 249
 250         typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE | kind);
 251         if (typei < 0)
 252                 return -ENOSYS;
 253
 254         drm->ttm.type_ncoh[!!kind] = typei;
 255         return 0;
 256 }
 257
 258 int
 259 nouveau_ttm_init(struct nouveau_drm *drm)
 260 {
 261         struct nvkm_device *device = nvxx_device(&drm->client.device);
 262         struct nvkm_pci *pci = device->pci;
 263         struct nvif_mmu *mmu = &drm->client.mmu;
 264         struct drm_device *dev = drm->dev;
 265         int typei, ret;
 266
 267         ret = nouveau_ttm_init_host(drm, 0);
 268         if (ret)
 269                 return ret;
 270
 271         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA &&
 272             drm->client.device.info.chipset != 0x50) {
 273                 ret = nouveau_ttm_init_host(drm, NVIF_MEM_KIND);
 274                 if (ret)
 275                         return ret;
 276         }
 277
 278         if (drm->client.device.info.platform != NV_DEVICE_INFO_V0_SOC &&
 279             drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 280                 typei = nvif_mmu_type(mmu, NVIF_MEM_VRAM | NVIF_MEM_MAPPABLE |
 281                                            NVIF_MEM_KIND |
 282                                            NVIF_MEM_COMP |
 283                                            NVIF_MEM_DISP);
 284                 if (typei < 0)
 285                         return -ENOSYS;
 286
 287                 drm->ttm.type_vram = typei;
 288         } else {
 289                 drm->ttm.type_vram = -1;
 290         }
 291
 292         if (pci && pci->agp.bridge) {
 293                 drm->agp.bridge = pci->agp.bridge;
 294                 drm->agp.base = pci->agp.base;
 295                 drm->agp.size = pci->agp.size;
 296                 drm->agp.cma = pci->agp.cma;
 297         }
 298
 299         ret = nouveau_ttm_global_init(drm);
 300         if (ret)
 301                 return ret;
 302
 303         ret = ttm_bo_device_init(&drm->ttm.bdev,
 304                                   drm->ttm.bo_global_ref.ref.object,
 305                                   &nouveau_bo_driver,
 306                                   dev->anon_inode->i_mapping,
 307                                   DRM_FILE_PAGE_OFFSET,
 308                                   drm->client.mmu.dmabits <= 32 ? true : false);
 309         if (ret) {
 310                 NV_ERROR(drm, "error initialising bo driver, %d\n", ret);
 311                 return ret;
 312         }
 313
 314         /* VRAM init */
 315         drm->gem.vram_available = drm->client.device.info.ram_user;
 316
 317         arch_io_reserve_memtype_wc(device->func->resource_addr(device, 1),
 318                                    device->func->resource_size(device, 1));
 319
 320         ret = ttm_bo_init_mm(&drm->ttm.bdev, TTM_PL_VRAM,
 321                               drm->gem.vram_available >> PAGE_SHIFT);
 322         if (ret) {
 323                 NV_ERROR(drm, "VRAM mm init failed, %d\n", ret);
 324                 return ret;
 325         }
 326
 327         drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1),
 328                                          device->func->resource_size(device, 1));
 329
 330         /* GART init */
 331         if (!drm->agp.bridge) {
 332                 drm->gem.gart_available = drm->client.vmm.vmm.limit;
 333         } else {
 334                 drm->gem.gart_available = drm->agp.size;
 335         }
 336
 337         ret = ttm_bo_init_mm(&drm->ttm.bdev, TTM_PL_TT,
 338                               drm->gem.gart_available >> PAGE_SHIFT);
 339         if (ret) {
 340                 NV_ERROR(drm, "GART mm init failed, %d\n", ret);
 341                 return ret;
 342         }
 343
 344         NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20));
 345         NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20));
 346         return 0;
 347 }
 348
 349 void
 350 nouveau_ttm_fini(struct nouveau_drm *drm)
 351 {
 352         struct nvkm_device *device = nvxx_device(&drm->client.device);
 353
 354         ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_VRAM);
 355         ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_TT);
 356
 357         ttm_bo_device_release(&drm->ttm.bdev);
 358
 359         nouveau_ttm_global_release(drm);
 360
 361         arch_phys_wc_del(drm->ttm.mtrr);
 362         drm->ttm.mtrr = 0;
 363         arch_io_free_memtype_wc(device->func->resource_addr(device, 1),
 364                                 device->func->resource_size(device, 1));
 365
 366 }