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
  26 #include <linux/limits.h>
  27
  28 #include <drm/ttm/ttm_range_manager.h>
  29 #include <drm/drm_cache.h>
  30
  31 #include "nouveau_drv.h"
  32 #include "nouveau_gem.h"
  33 #include "nouveau_mem.h"
  34 #include "nouveau_ttm.h"
  35
  36 #include <core/tegra.h>
  37
  38 static void
  39 nouveau_manager_del(struct ttm_resource_manager *man,
  40                     struct ttm_resource *reg)
  41 {
  42         nouveau_mem_del(man, reg);
  43 }
  44
  45 static bool
  46 nouveau_manager_intersects(struct ttm_resource_manager *man,
  47                            struct ttm_resource *res,
  48                            const struct ttm_place *place,
  49                            size_t size)
  50 {
  51         return nouveau_mem_intersects(res, place, size);
  52 }
  53
  54 static bool
  55 nouveau_manager_compatible(struct ttm_resource_manager *man,
  56                            struct ttm_resource *res,
  57                            const struct ttm_place *place,
  58                            size_t size)
  59 {
  60         return nouveau_mem_compatible(res, place, size);
  61 }
  62
  63 static int
  64 nouveau_vram_manager_new(struct ttm_resource_manager *man,
  65                          struct ttm_buffer_object *bo,
  66                          const struct ttm_place *place,
  67                          struct ttm_resource **res)
  68 {
  69         struct nouveau_bo *nvbo = nouveau_bo(bo);
  70         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
  71         int ret;
  72
  73         if (drm->client.device.info.ram_size == 0)
  74                 return -ENOMEM;
  75
  76         ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
  77         if (ret)
  78                 return ret;
  79
  80         ttm_resource_init(bo, place, *res);
  81
  82         ret = nouveau_mem_vram(*res, nvbo->contig, nvbo->page);
  83         if (ret) {
  84                 nouveau_mem_del(man, *res);
  85                 return ret;
  86         }
  87
  88         return 0;
  89 }
  90
  91 const struct ttm_resource_manager_func nouveau_vram_manager = {
  92         .alloc = nouveau_vram_manager_new,
  93         .free = nouveau_manager_del,
  94         .intersects = nouveau_manager_intersects,
  95         .compatible = nouveau_manager_compatible,
  96 };
  97
  98 static int
  99 nouveau_gart_manager_new(struct ttm_resource_manager *man,
 100                          struct ttm_buffer_object *bo,
 101                          const struct ttm_place *place,
 102                          struct ttm_resource **res)
 103 {
 104         struct nouveau_bo *nvbo = nouveau_bo(bo);
 105         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
 106         int ret;
 107
 108         ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
 109         if (ret)
 110                 return ret;
 111
 112         ttm_resource_init(bo, place, *res);
 113         (*res)->start = 0;
 114         return 0;
 115 }
 116
 117 const struct ttm_resource_manager_func nouveau_gart_manager = {
 118         .alloc = nouveau_gart_manager_new,
 119         .free = nouveau_manager_del,
 120         .intersects = nouveau_manager_intersects,
 121         .compatible = nouveau_manager_compatible,
 122 };
 123
 124 static int
 125 nv04_gart_manager_new(struct ttm_resource_manager *man,
 126                       struct ttm_buffer_object *bo,
 127                       const struct ttm_place *place,
 128                       struct ttm_resource **res)
 129 {
 130         struct nouveau_bo *nvbo = nouveau_bo(bo);
 131         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
 132         struct nouveau_mem *mem;
 133         int ret;
 134
 135         ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
 136         if (ret)
 137                 return ret;
 138
 139         mem = nouveau_mem(*res);
 140         ttm_resource_init(bo, place, *res);
 141         ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
 142                            (long)(*res)->size, &mem->vma[0]);
 143         if (ret) {
 144                 nouveau_mem_del(man, *res);
 145                 return ret;
 146         }
 147
 148         (*res)->start = mem->vma[0].addr >> PAGE_SHIFT;
 149         return 0;
 150 }
 151
 152 const struct ttm_resource_manager_func nv04_gart_manager = {
 153         .alloc = nv04_gart_manager_new,
 154         .free = nouveau_manager_del,
 155         .intersects = nouveau_manager_intersects,
 156         .compatible = nouveau_manager_compatible,
 157 };
 158
 159 static int
 160 nouveau_ttm_init_host(struct nouveau_drm *drm, u8 kind)
 161 {
 162         struct nvif_mmu *mmu = &drm->client.mmu;
 163         int typei;
 164
 165         typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE |
 166                                             kind | NVIF_MEM_COHERENT);
 167         if (typei < 0)
 168                 return -ENOSYS;
 169
 170         drm->ttm.type_host[!!kind] = typei;
 171
 172         typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE | kind);
 173         if (typei < 0)
 174                 return -ENOSYS;
 175
 176         drm->ttm.type_ncoh[!!kind] = typei;
 177         return 0;
 178 }
 179
 180 static int
 181 nouveau_ttm_init_vram(struct nouveau_drm *drm)
 182 {
 183         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 184                 struct ttm_resource_manager *man = kzalloc(sizeof(*man), GFP_KERNEL);
 185
 186                 if (!man)
 187                         return -ENOMEM;
 188
 189                 man->func = &nouveau_vram_manager;
 190
 191                 ttm_resource_manager_init(man, &drm->ttm.bdev,
 192                                           drm->gem.vram_available >> PAGE_SHIFT);
 193                 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, man);
 194                 ttm_resource_manager_set_used(man, true);
 195                 return 0;
 196         } else {
 197                 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_VRAM, false,
 198                                           drm->gem.vram_available >> PAGE_SHIFT);
 199         }
 200 }
 201
 202 static void
 203 nouveau_ttm_fini_vram(struct nouveau_drm *drm)
 204 {
 205         struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_VRAM);
 206
 207         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 208                 ttm_resource_manager_set_used(man, false);
 209                 ttm_resource_manager_evict_all(&drm->ttm.bdev, man);
 210                 ttm_resource_manager_cleanup(man);
 211                 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, NULL);
 212                 kfree(man);
 213         } else
 214                 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_VRAM);
 215 }
 216
 217 static int
 218 nouveau_ttm_init_gtt(struct nouveau_drm *drm)
 219 {
 220         struct ttm_resource_manager *man;
 221         unsigned long size_pages = drm->gem.gart_available >> PAGE_SHIFT;
 222         const struct ttm_resource_manager_func *func = NULL;
 223
 224         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 225                 func = &nouveau_gart_manager;
 226         else if (!drm->agp.bridge)
 227                 func = &nv04_gart_manager;
 228         else
 229                 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_TT, true,
 230                                           size_pages);
 231
 232         man = kzalloc(sizeof(*man), GFP_KERNEL);
 233         if (!man)
 234                 return -ENOMEM;
 235
 236         man->func = func;
 237         man->use_tt = true;
 238         ttm_resource_manager_init(man, &drm->ttm.bdev, size_pages);
 239         ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, man);
 240         ttm_resource_manager_set_used(man, true);
 241         return 0;
 242 }
 243
 244 static void
 245 nouveau_ttm_fini_gtt(struct nouveau_drm *drm)
 246 {
 247         struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_TT);
 248
 249         if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA &&
 250             drm->agp.bridge)
 251                 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_TT);
 252         else {
 253                 ttm_resource_manager_set_used(man, false);
 254                 ttm_resource_manager_evict_all(&drm->ttm.bdev, man);
 255                 ttm_resource_manager_cleanup(man);
 256                 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, NULL);
 257                 kfree(man);
 258         }
 259 }
 260
 261 int
 262 nouveau_ttm_init(struct nouveau_drm *drm)
 263 {
 264         struct nvkm_device *device = nvxx_device(&drm->client.device);
 265         struct nvkm_pci *pci = device->pci;
 266         struct nvif_mmu *mmu = &drm->client.mmu;
 267         struct drm_device *dev = drm->dev;
 268         int typei, ret;
 269
 270         ret = nouveau_ttm_init_host(drm, 0);
 271         if (ret)
 272                 return ret;
 273
 274         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA &&
 275             drm->client.device.info.chipset != 0x50) {
 276                 ret = nouveau_ttm_init_host(drm, NVIF_MEM_KIND);
 277                 if (ret)
 278                         return ret;
 279         }
 280
 281         if (drm->client.device.info.platform != NV_DEVICE_INFO_V0_SOC &&
 282             drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 283                 typei = nvif_mmu_type(mmu, NVIF_MEM_VRAM | NVIF_MEM_MAPPABLE |
 284                                            NVIF_MEM_KIND |
 285                                            NVIF_MEM_COMP |
 286                                            NVIF_MEM_DISP);
 287                 if (typei < 0)
 288                         return -ENOSYS;
 289
 290                 drm->ttm.type_vram = typei;
 291         } else {
 292                 drm->ttm.type_vram = -1;
 293         }
 294
 295         if (pci && pci->agp.bridge) {
 296                 drm->agp.bridge = pci->agp.bridge;
 297                 drm->agp.base = pci->agp.base;
 298                 drm->agp.size = pci->agp.size;
 299                 drm->agp.cma = pci->agp.cma;
 300         }
 301
 302         ret = ttm_device_init(&drm->ttm.bdev, &nouveau_bo_driver, drm->dev->dev,
 303                                   dev->anon_inode->i_mapping,
 304                                   dev->vma_offset_manager,
 305                                   drm_need_swiotlb(drm->client.mmu.dmabits),
 306                                   drm->client.mmu.dmabits <= 32);
 307         if (ret) {
 308                 NV_ERROR(drm, "error initialising bo driver, %d\n", ret);
 309                 return ret;
 310         }
 311
 312         /* VRAM init */
 313         drm->gem.vram_available = drm->client.device.info.ram_user;
 314
 315         arch_io_reserve_memtype_wc(device->func->resource_addr(device, 1),
 316                                    device->func->resource_size(device, 1));
 317
 318         ret = nouveau_ttm_init_vram(drm);
 319         if (ret) {
 320                 NV_ERROR(drm, "VRAM mm init failed, %d\n", ret);
 321                 return ret;
 322         }
 323
 324         drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1),
 325                                          device->func->resource_size(device, 1));
 326
 327         /* GART init */
 328         if (!drm->agp.bridge) {
 329                 drm->gem.gart_available = drm->client.vmm.vmm.limit;
 330         } else {
 331                 drm->gem.gart_available = drm->agp.size;
 332         }
 333
 334         ret = nouveau_ttm_init_gtt(drm);
 335         if (ret) {
 336                 NV_ERROR(drm, "GART mm init failed, %d\n", ret);
 337                 return ret;
 338         }
 339
 340         mutex_init(&drm->ttm.io_reserve_mutex);
 341         INIT_LIST_HEAD(&drm->ttm.io_reserve_lru);
 342
 343         NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20));
 344         NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20));
 345         return 0;
 346 }
 347
 348 void
 349 nouveau_ttm_fini(struct nouveau_drm *drm)
 350 {
 351         struct nvkm_device *device = nvxx_device(&drm->client.device);
 352
 353         nouveau_ttm_fini_vram(drm);
 354         nouveau_ttm_fini_gtt(drm);
 355
 356         ttm_device_fini(&drm->ttm.bdev);
 357
 358         arch_phys_wc_del(drm->ttm.mtrr);
 359         drm->ttm.mtrr = 0;
 360         arch_io_free_memtype_wc(device->func->resource_addr(device, 1),
 361                                 device->func->resource_size(device, 1));
 362
 363 }