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 void
  35 nouveau_manager_del(struct ttm_resource_manager *man, struct ttm_resource *reg)
  36 {
  37         nouveau_mem_del(reg);
  38 }
  39
  40 static int
  41 nouveau_vram_manager_new(struct ttm_resource_manager *man,
  42                          struct ttm_buffer_object *bo,
  43                          const struct ttm_place *place,
  44                          struct ttm_resource *reg)
  45 {
  46         struct nouveau_bo *nvbo = nouveau_bo(bo);
  47         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
  48         int ret;
  49
  50         if (drm->client.device.info.ram_size == 0)
  51                 return -ENOMEM;
  52
  53         ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, reg);
  54         if (ret)
  55                 return ret;
  56
  57         ret = nouveau_mem_vram(reg, nvbo->contig, nvbo->page);
  58         if (ret) {
  59                 nouveau_mem_del(reg);
  60                 return ret;
  61         }
  62
  63         return 0;
  64 }
  65
  66 const struct ttm_resource_manager_func nouveau_vram_manager = {
  67         .alloc = nouveau_vram_manager_new,
  68         .free = nouveau_manager_del,
  69 };
  70
  71 static int
  72 nouveau_gart_manager_new(struct ttm_resource_manager *man,
  73                          struct ttm_buffer_object *bo,
  74                          const struct ttm_place *place,
  75                          struct ttm_resource *reg)
  76 {
  77         struct nouveau_bo *nvbo = nouveau_bo(bo);
  78         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
  79         int ret;
  80
  81         ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, reg);
  82         if (ret)
  83                 return ret;
  84
  85         reg->start = 0;
  86         return 0;
  87 }
  88
  89 const struct ttm_resource_manager_func nouveau_gart_manager = {
  90         .alloc = nouveau_gart_manager_new,
  91         .free = nouveau_manager_del,
  92 };
  93
  94 static int
  95 nv04_gart_manager_new(struct ttm_resource_manager *man,
  96                       struct ttm_buffer_object *bo,
  97                       const struct ttm_place *place,
  98                       struct ttm_resource *reg)
  99 {
 100         struct nouveau_bo *nvbo = nouveau_bo(bo);
 101         struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
 102         struct nouveau_mem *mem;
 103         int ret;
 104
 105         ret = nouveau_mem_new(&drm->master, nvbo->kind, nvbo->comp, reg);
 106         mem = nouveau_mem(reg);
 107         if (ret)
 108                 return ret;
 109
 110         ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
 111                            reg->num_pages << PAGE_SHIFT, &mem->vma[0]);
 112         if (ret) {
 113                 nouveau_mem_del(reg);
 114                 return ret;
 115         }
 116
 117         reg->start = mem->vma[0].addr >> PAGE_SHIFT;
 118         return 0;
 119 }
 120
 121 const struct ttm_resource_manager_func nv04_gart_manager = {
 122         .alloc = nv04_gart_manager_new,
 123         .free = nouveau_manager_del,
 124 };
 125
 126 static vm_fault_t nouveau_ttm_fault(struct vm_fault *vmf)
 127 {
 128         struct vm_area_struct *vma = vmf->vma;
 129         struct ttm_buffer_object *bo = vma->vm_private_data;
 130         pgprot_t prot;
 131         vm_fault_t ret;
 132
 133         ret = ttm_bo_vm_reserve(bo, vmf);
 134         if (ret)
 135                 return ret;
 136
 137         nouveau_bo_del_io_reserve_lru(bo);
 138
 139         prot = vm_get_page_prot(vma->vm_flags);
 140         ret = ttm_bo_vm_fault_reserved(vmf, prot, TTM_BO_VM_NUM_PREFAULT, 1);
 141         if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT))
 142                 return ret;
 143
 144         nouveau_bo_add_io_reserve_lru(bo);
 145
 146         dma_resv_unlock(bo->base.resv);
 147
 148         return ret;
 149 }
 150
 151 static struct vm_operations_struct nouveau_ttm_vm_ops = {
 152         .fault = nouveau_ttm_fault,
 153         .open = ttm_bo_vm_open,
 154         .close = ttm_bo_vm_close,
 155         .access = ttm_bo_vm_access
 156 };
 157
 158 int
 159 nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
 160 {
 161         struct drm_file *file_priv = filp->private_data;
 162         struct nouveau_drm *drm = nouveau_drm(file_priv->minor->dev);
 163         int ret;
 164
 165         ret = ttm_bo_mmap(filp, vma, &drm->ttm.bdev);
 166         if (ret)
 167                 return ret;
 168
 169         vma->vm_ops = &nouveau_ttm_vm_ops;
 170         return 0;
 171 }
 172
 173 static int
 174 nouveau_ttm_init_host(struct nouveau_drm *drm, u8 kind)
 175 {
 176         struct nvif_mmu *mmu = &drm->client.mmu;
 177         int typei;
 178
 179         typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE |
 180                                             kind | NVIF_MEM_COHERENT);
 181         if (typei < 0)
 182                 return -ENOSYS;
 183
 184         drm->ttm.type_host[!!kind] = typei;
 185
 186         typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE | kind);
 187         if (typei < 0)
 188                 return -ENOSYS;
 189
 190         drm->ttm.type_ncoh[!!kind] = typei;
 191         return 0;
 192 }
 193
 194 static int
 195 nouveau_ttm_init_vram(struct nouveau_drm *drm)
 196 {
 197         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 198                 struct ttm_resource_manager *man = kzalloc(sizeof(*man), GFP_KERNEL);
 199
 200                 if (!man)
 201                         return -ENOMEM;
 202
 203                 man->func = &nouveau_vram_manager;
 204
 205                 ttm_resource_manager_init(man,
 206                                           drm->gem.vram_available >> PAGE_SHIFT);
 207                 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, man);
 208                 ttm_resource_manager_set_used(man, true);
 209                 return 0;
 210         } else {
 211                 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_VRAM, false,
 212                                           drm->gem.vram_available >> PAGE_SHIFT);
 213         }
 214 }
 215
 216 static void
 217 nouveau_ttm_fini_vram(struct nouveau_drm *drm)
 218 {
 219         struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_VRAM);
 220
 221         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 222                 ttm_resource_manager_set_used(man, false);
 223                 ttm_resource_manager_force_list_clean(&drm->ttm.bdev, man);
 224                 ttm_resource_manager_cleanup(man);
 225                 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, NULL);
 226                 kfree(man);
 227         } else
 228                 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_VRAM);
 229 }
 230
 231 static int
 232 nouveau_ttm_init_gtt(struct nouveau_drm *drm)
 233 {
 234         struct ttm_resource_manager *man;
 235         unsigned long size_pages = drm->gem.gart_available >> PAGE_SHIFT;
 236         const struct ttm_resource_manager_func *func = NULL;
 237
 238         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 239                 func = &nouveau_gart_manager;
 240         else if (!drm->agp.bridge)
 241                 func = &nv04_gart_manager;
 242         else
 243                 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_TT, true,
 244                                           size_pages);
 245
 246         man = kzalloc(sizeof(*man), GFP_KERNEL);
 247         if (!man)
 248                 return -ENOMEM;
 249
 250         man->func = func;
 251         man->use_tt = true;
 252         ttm_resource_manager_init(man, size_pages);
 253         ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, man);
 254         ttm_resource_manager_set_used(man, true);
 255         return 0;
 256 }
 257
 258 static void
 259 nouveau_ttm_fini_gtt(struct nouveau_drm *drm)
 260 {
 261         struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_TT);
 262
 263         if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA &&
 264             drm->agp.bridge)
 265                 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_TT);
 266         else {
 267                 ttm_resource_manager_set_used(man, false);
 268                 ttm_resource_manager_force_list_clean(&drm->ttm.bdev, man);
 269                 ttm_resource_manager_cleanup(man);
 270                 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, NULL);
 271                 kfree(man);
 272         }
 273 }
 274
 275 int
 276 nouveau_ttm_init(struct nouveau_drm *drm)
 277 {
 278         struct nvkm_device *device = nvxx_device(&drm->client.device);
 279         struct nvkm_pci *pci = device->pci;
 280         struct nvif_mmu *mmu = &drm->client.mmu;
 281         struct drm_device *dev = drm->dev;
 282         int typei, ret;
 283
 284         ret = nouveau_ttm_init_host(drm, 0);
 285         if (ret)
 286                 return ret;
 287
 288         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA &&
 289             drm->client.device.info.chipset != 0x50) {
 290                 ret = nouveau_ttm_init_host(drm, NVIF_MEM_KIND);
 291                 if (ret)
 292                         return ret;
 293         }
 294
 295         if (drm->client.device.info.platform != NV_DEVICE_INFO_V0_SOC &&
 296             drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 297                 typei = nvif_mmu_type(mmu, NVIF_MEM_VRAM | NVIF_MEM_MAPPABLE |
 298                                            NVIF_MEM_KIND |
 299                                            NVIF_MEM_COMP |
 300                                            NVIF_MEM_DISP);
 301                 if (typei < 0)
 302                         return -ENOSYS;
 303
 304                 drm->ttm.type_vram = typei;
 305         } else {
 306                 drm->ttm.type_vram = -1;
 307         }
 308
 309         if (pci && pci->agp.bridge) {
 310                 drm->agp.bridge = pci->agp.bridge;
 311                 drm->agp.base = pci->agp.base;
 312                 drm->agp.size = pci->agp.size;
 313                 drm->agp.cma = pci->agp.cma;
 314         }
 315
 316         ret = ttm_bo_device_init(&drm->ttm.bdev,
 317                                   &nouveau_bo_driver,
 318                                   dev->anon_inode->i_mapping,
 319                                   dev->vma_offset_manager,
 320                                   drm->client.mmu.dmabits <= 32 ? true : false);
 321         if (ret) {
 322                 NV_ERROR(drm, "error initialising bo driver, %d\n", ret);
 323                 return ret;
 324         }
 325
 326         /* VRAM init */
 327         drm->gem.vram_available = drm->client.device.info.ram_user;
 328
 329         arch_io_reserve_memtype_wc(device->func->resource_addr(device, 1),
 330                                    device->func->resource_size(device, 1));
 331
 332         ret = nouveau_ttm_init_vram(drm);
 333         if (ret) {
 334                 NV_ERROR(drm, "VRAM mm init failed, %d\n", ret);
 335                 return ret;
 336         }
 337
 338         drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1),
 339                                          device->func->resource_size(device, 1));
 340
 341         /* GART init */
 342         if (!drm->agp.bridge) {
 343                 drm->gem.gart_available = drm->client.vmm.vmm.limit;
 344         } else {
 345                 drm->gem.gart_available = drm->agp.size;
 346         }
 347
 348         ret = nouveau_ttm_init_gtt(drm);
 349         if (ret) {
 350                 NV_ERROR(drm, "GART mm init failed, %d\n", ret);
 351                 return ret;
 352         }
 353
 354         mutex_init(&drm->ttm.io_reserve_mutex);
 355         INIT_LIST_HEAD(&drm->ttm.io_reserve_lru);
 356
 357         NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20));
 358         NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20));
 359         return 0;
 360 }
 361
 362 void
 363 nouveau_ttm_fini(struct nouveau_drm *drm)
 364 {
 365         struct nvkm_device *device = nvxx_device(&drm->client.device);
 366
 367         nouveau_ttm_fini_vram(drm);
 368         nouveau_ttm_fini_gtt(drm);
 369
 370         ttm_bo_device_release(&drm->ttm.bdev);
 371
 372         arch_phys_wc_del(drm->ttm.mtrr);
 373         drm->ttm.mtrr = 0;
 374         arch_io_free_memtype_wc(device->func->resource_addr(device, 1),
 375                                 device->func->resource_size(device, 1));
 376
 377 }