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 #include <linux/swiotlb.h>
  28
  29 #include <drm/ttm/ttm_range_manager.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, struct ttm_resource *reg)
  40 {
  41         nouveau_mem_del(reg);
  42 }
  43
  44 static int
  45 nouveau_vram_manager_new(struct ttm_resource_manager *man,
  46                          struct ttm_buffer_object *bo,
  47                          const struct ttm_place *place,
  48                          struct ttm_resource **res)
  49 {
  50         struct nouveau_bo *nvbo = nouveau_bo(bo);
  51         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
  52         int ret;
  53
  54         if (drm->client.device.info.ram_size == 0)
  55                 return -ENOMEM;
  56
  57         ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
  58         if (ret)
  59                 return ret;
  60
  61         ttm_resource_init(bo, place, *res);
  62
  63         ret = nouveau_mem_vram(*res, nvbo->contig, nvbo->page);
  64         if (ret) {
  65                 nouveau_mem_del(*res);
  66                 return ret;
  67         }
  68
  69         return 0;
  70 }
  71
  72 const struct ttm_resource_manager_func nouveau_vram_manager = {
  73         .alloc = nouveau_vram_manager_new,
  74         .free = nouveau_manager_del,
  75 };
  76
  77 static int
  78 nouveau_gart_manager_new(struct ttm_resource_manager *man,
  79                          struct ttm_buffer_object *bo,
  80                          const struct ttm_place *place,
  81                          struct ttm_resource **res)
  82 {
  83         struct nouveau_bo *nvbo = nouveau_bo(bo);
  84         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
  85         int ret;
  86
  87         ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
  88         if (ret)
  89                 return ret;
  90
  91         ttm_resource_init(bo, place, *res);
  92         (*res)->start = 0;
  93         return 0;
  94 }
  95
  96 const struct ttm_resource_manager_func nouveau_gart_manager = {
  97         .alloc = nouveau_gart_manager_new,
  98         .free = nouveau_manager_del,
  99 };
 100
 101 static int
 102 nv04_gart_manager_new(struct ttm_resource_manager *man,
 103                       struct ttm_buffer_object *bo,
 104                       const struct ttm_place *place,
 105                       struct ttm_resource **res)
 106 {
 107         struct nouveau_bo *nvbo = nouveau_bo(bo);
 108         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
 109         struct nouveau_mem *mem;
 110         int ret;
 111
 112         ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, res);
 113         if (ret)
 114                 return ret;
 115
 116         mem = nouveau_mem(*res);
 117         ttm_resource_init(bo, place, *res);
 118         ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
 119                            (long)(*res)->num_pages << PAGE_SHIFT, &mem->vma[0]);
 120         if (ret) {
 121                 nouveau_mem_del(*res);
 122                 return ret;
 123         }
 124
 125         (*res)->start = mem->vma[0].addr >> PAGE_SHIFT;
 126         return 0;
 127 }
 128
 129 const struct ttm_resource_manager_func nv04_gart_manager = {
 130         .alloc = nv04_gart_manager_new,
 131         .free = nouveau_manager_del,
 132 };
 133
 134 static int
 135 nouveau_ttm_init_host(struct nouveau_drm *drm, u8 kind)
 136 {
 137         struct nvif_mmu *mmu = &drm->client.mmu;
 138         int typei;
 139
 140         typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE |
 141                                             kind | NVIF_MEM_COHERENT);
 142         if (typei < 0)
 143                 return -ENOSYS;
 144
 145         drm->ttm.type_host[!!kind] = typei;
 146
 147         typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE | kind);
 148         if (typei < 0)
 149                 return -ENOSYS;
 150
 151         drm->ttm.type_ncoh[!!kind] = typei;
 152         return 0;
 153 }
 154
 155 static int
 156 nouveau_ttm_init_vram(struct nouveau_drm *drm)
 157 {
 158         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 159                 struct ttm_resource_manager *man = kzalloc(sizeof(*man), GFP_KERNEL);
 160
 161                 if (!man)
 162                         return -ENOMEM;
 163
 164                 man->func = &nouveau_vram_manager;
 165
 166                 ttm_resource_manager_init(man,
 167                                           drm->gem.vram_available >> PAGE_SHIFT);
 168                 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, man);
 169                 ttm_resource_manager_set_used(man, true);
 170                 return 0;
 171         } else {
 172                 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_VRAM, false,
 173                                           drm->gem.vram_available >> PAGE_SHIFT);
 174         }
 175 }
 176
 177 static void
 178 nouveau_ttm_fini_vram(struct nouveau_drm *drm)
 179 {
 180         struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_VRAM);
 181
 182         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 183                 ttm_resource_manager_set_used(man, false);
 184                 ttm_resource_manager_evict_all(&drm->ttm.bdev, man);
 185                 ttm_resource_manager_cleanup(man);
 186                 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, NULL);
 187                 kfree(man);
 188         } else
 189                 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_VRAM);
 190 }
 191
 192 static int
 193 nouveau_ttm_init_gtt(struct nouveau_drm *drm)
 194 {
 195         struct ttm_resource_manager *man;
 196         unsigned long size_pages = drm->gem.gart_available >> PAGE_SHIFT;
 197         const struct ttm_resource_manager_func *func = NULL;
 198
 199         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 200                 func = &nouveau_gart_manager;
 201         else if (!drm->agp.bridge)
 202                 func = &nv04_gart_manager;
 203         else
 204                 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_TT, true,
 205                                           size_pages);
 206
 207         man = kzalloc(sizeof(*man), GFP_KERNEL);
 208         if (!man)
 209                 return -ENOMEM;
 210
 211         man->func = func;
 212         man->use_tt = true;
 213         ttm_resource_manager_init(man, size_pages);
 214         ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, man);
 215         ttm_resource_manager_set_used(man, true);
 216         return 0;
 217 }
 218
 219 static void
 220 nouveau_ttm_fini_gtt(struct nouveau_drm *drm)
 221 {
 222         struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_TT);
 223
 224         if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA &&
 225             drm->agp.bridge)
 226                 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_TT);
 227         else {
 228                 ttm_resource_manager_set_used(man, false);
 229                 ttm_resource_manager_evict_all(&drm->ttm.bdev, man);
 230                 ttm_resource_manager_cleanup(man);
 231                 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, NULL);
 232                 kfree(man);
 233         }
 234 }
 235
 236 int
 237 nouveau_ttm_init(struct nouveau_drm *drm)
 238 {
 239         struct nvkm_device *device = nvxx_device(&drm->client.device);
 240         struct nvkm_pci *pci = device->pci;
 241         struct nvif_mmu *mmu = &drm->client.mmu;
 242         struct drm_device *dev = drm->dev;
 243         bool need_swiotlb = false;
 244         int typei, ret;
 245
 246         ret = nouveau_ttm_init_host(drm, 0);
 247         if (ret)
 248                 return ret;
 249
 250         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA &&
 251             drm->client.device.info.chipset != 0x50) {
 252                 ret = nouveau_ttm_init_host(drm, NVIF_MEM_KIND);
 253                 if (ret)
 254                         return ret;
 255         }
 256
 257         if (drm->client.device.info.platform != NV_DEVICE_INFO_V0_SOC &&
 258             drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 259                 typei = nvif_mmu_type(mmu, NVIF_MEM_VRAM | NVIF_MEM_MAPPABLE |
 260                                            NVIF_MEM_KIND |
 261                                            NVIF_MEM_COMP |
 262                                            NVIF_MEM_DISP);
 263                 if (typei < 0)
 264                         return -ENOSYS;
 265
 266                 drm->ttm.type_vram = typei;
 267         } else {
 268                 drm->ttm.type_vram = -1;
 269         }
 270
 271         if (pci && pci->agp.bridge) {
 272                 drm->agp.bridge = pci->agp.bridge;
 273                 drm->agp.base = pci->agp.base;
 274                 drm->agp.size = pci->agp.size;
 275                 drm->agp.cma = pci->agp.cma;
 276         }
 277
 278 #if IS_ENABLED(CONFIG_SWIOTLB) && IS_ENABLED(CONFIG_X86)
 279         need_swiotlb = is_swiotlb_active(dev->dev);
 280 #endif
 281
 282         ret = ttm_device_init(&drm->ttm.bdev, &nouveau_bo_driver, drm->dev->dev,
 283                                   dev->anon_inode->i_mapping,
 284                                   dev->vma_offset_manager, need_swiotlb,
 285                                   drm->client.mmu.dmabits <= 32);
 286         if (ret) {
 287                 NV_ERROR(drm, "error initialising bo driver, %d\n", ret);
 288                 return ret;
 289         }
 290
 291         /* VRAM init */
 292         drm->gem.vram_available = drm->client.device.info.ram_user;
 293
 294         arch_io_reserve_memtype_wc(device->func->resource_addr(device, 1),
 295                                    device->func->resource_size(device, 1));
 296
 297         ret = nouveau_ttm_init_vram(drm);
 298         if (ret) {
 299                 NV_ERROR(drm, "VRAM mm init failed, %d\n", ret);
 300                 return ret;
 301         }
 302
 303         drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1),
 304                                          device->func->resource_size(device, 1));
 305
 306         /* GART init */
 307         if (!drm->agp.bridge) {
 308                 drm->gem.gart_available = drm->client.vmm.vmm.limit;
 309         } else {
 310                 drm->gem.gart_available = drm->agp.size;
 311         }
 312
 313         ret = nouveau_ttm_init_gtt(drm);
 314         if (ret) {
 315                 NV_ERROR(drm, "GART mm init failed, %d\n", ret);
 316                 return ret;
 317         }
 318
 319         mutex_init(&drm->ttm.io_reserve_mutex);
 320         INIT_LIST_HEAD(&drm->ttm.io_reserve_lru);
 321
 322         NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20));
 323         NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20));
 324         return 0;
 325 }
 326
 327 void
 328 nouveau_ttm_fini(struct nouveau_drm *drm)
 329 {
 330         struct nvkm_device *device = nvxx_device(&drm->client.device);
 331
 332         nouveau_ttm_fini_vram(drm);
 333         nouveau_ttm_fini_gtt(drm);
 334
 335         ttm_device_fini(&drm->ttm.bdev);
 336
 337         arch_phys_wc_del(drm->ttm.mtrr);
 338         drm->ttm.mtrr = 0;
 339         arch_io_free_memtype_wc(device->func->resource_addr(device, 1),
 340                                 device->func->resource_size(device, 1));
 341
 342 }