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 ret = nouveau_ttm_fault_reserve_notify(bo); 138 if (ret) 139 goto error_unlock; 140 141 nouveau_bo_del_io_reserve_lru(bo); 142 prot = vm_get_page_prot(vma->vm_flags); 143 ret = ttm_bo_vm_fault_reserved(vmf, prot, TTM_BO_VM_NUM_PREFAULT, 1); 144 nouveau_bo_add_io_reserve_lru(bo); 145 if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) 146 return ret; 147 148 error_unlock: 149 dma_resv_unlock(bo->base.resv); 150 return ret; 151 } 152 153 static struct vm_operations_struct nouveau_ttm_vm_ops = { 154 .fault = nouveau_ttm_fault, 155 .open = ttm_bo_vm_open, 156 .close = ttm_bo_vm_close, 157 .access = ttm_bo_vm_access 158 }; 159 160 int 161 nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma) 162 { 163 struct drm_file *file_priv = filp->private_data; 164 struct nouveau_drm *drm = nouveau_drm(file_priv->minor->dev); 165 int ret; 166 167 ret = ttm_bo_mmap(filp, vma, &drm->ttm.bdev); 168 if (ret) 169 return ret; 170 171 vma->vm_ops = &nouveau_ttm_vm_ops; 172 return 0; 173 } 174 175 static int 176 nouveau_ttm_init_host(struct nouveau_drm *drm, u8 kind) 177 { 178 struct nvif_mmu *mmu = &drm->client.mmu; 179 int typei; 180 181 typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE | 182 kind | NVIF_MEM_COHERENT); 183 if (typei < 0) 184 return -ENOSYS; 185 186 drm->ttm.type_host[!!kind] = typei; 187 188 typei = nvif_mmu_type(mmu, NVIF_MEM_HOST | NVIF_MEM_MAPPABLE | kind); 189 if (typei < 0) 190 return -ENOSYS; 191 192 drm->ttm.type_ncoh[!!kind] = typei; 193 return 0; 194 } 195 196 static int 197 nouveau_ttm_init_vram(struct nouveau_drm *drm) 198 { 199 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) { 200 struct ttm_resource_manager *man = kzalloc(sizeof(*man), GFP_KERNEL); 201 202 if (!man) 203 return -ENOMEM; 204 205 man->func = &nouveau_vram_manager; 206 207 ttm_resource_manager_init(man, 208 drm->gem.vram_available >> PAGE_SHIFT); 209 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, man); 210 ttm_resource_manager_set_used(man, true); 211 return 0; 212 } else { 213 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_VRAM, false, 214 drm->gem.vram_available >> PAGE_SHIFT); 215 } 216 } 217 218 static void 219 nouveau_ttm_fini_vram(struct nouveau_drm *drm) 220 { 221 struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_VRAM); 222 223 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) { 224 ttm_resource_manager_set_used(man, false); 225 ttm_resource_manager_evict_all(&drm->ttm.bdev, man); 226 ttm_resource_manager_cleanup(man); 227 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_VRAM, NULL); 228 kfree(man); 229 } else 230 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_VRAM); 231 } 232 233 static int 234 nouveau_ttm_init_gtt(struct nouveau_drm *drm) 235 { 236 struct ttm_resource_manager *man; 237 unsigned long size_pages = drm->gem.gart_available >> PAGE_SHIFT; 238 const struct ttm_resource_manager_func *func = NULL; 239 240 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) 241 func = &nouveau_gart_manager; 242 else if (!drm->agp.bridge) 243 func = &nv04_gart_manager; 244 else 245 return ttm_range_man_init(&drm->ttm.bdev, TTM_PL_TT, true, 246 size_pages); 247 248 man = kzalloc(sizeof(*man), GFP_KERNEL); 249 if (!man) 250 return -ENOMEM; 251 252 man->func = func; 253 man->use_tt = true; 254 ttm_resource_manager_init(man, size_pages); 255 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, man); 256 ttm_resource_manager_set_used(man, true); 257 return 0; 258 } 259 260 static void 261 nouveau_ttm_fini_gtt(struct nouveau_drm *drm) 262 { 263 struct ttm_resource_manager *man = ttm_manager_type(&drm->ttm.bdev, TTM_PL_TT); 264 265 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA && 266 drm->agp.bridge) 267 ttm_range_man_fini(&drm->ttm.bdev, TTM_PL_TT); 268 else { 269 ttm_resource_manager_set_used(man, false); 270 ttm_resource_manager_evict_all(&drm->ttm.bdev, man); 271 ttm_resource_manager_cleanup(man); 272 ttm_set_driver_manager(&drm->ttm.bdev, TTM_PL_TT, NULL); 273 kfree(man); 274 } 275 } 276 277 int 278 nouveau_ttm_init(struct nouveau_drm *drm) 279 { 280 struct nvkm_device *device = nvxx_device(&drm->client.device); 281 struct nvkm_pci *pci = device->pci; 282 struct nvif_mmu *mmu = &drm->client.mmu; 283 struct drm_device *dev = drm->dev; 284 int typei, ret; 285 286 ret = nouveau_ttm_init_host(drm, 0); 287 if (ret) 288 return ret; 289 290 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA && 291 drm->client.device.info.chipset != 0x50) { 292 ret = nouveau_ttm_init_host(drm, NVIF_MEM_KIND); 293 if (ret) 294 return ret; 295 } 296 297 if (drm->client.device.info.platform != NV_DEVICE_INFO_V0_SOC && 298 drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) { 299 typei = nvif_mmu_type(mmu, NVIF_MEM_VRAM | NVIF_MEM_MAPPABLE | 300 NVIF_MEM_KIND | 301 NVIF_MEM_COMP | 302 NVIF_MEM_DISP); 303 if (typei < 0) 304 return -ENOSYS; 305 306 drm->ttm.type_vram = typei; 307 } else { 308 drm->ttm.type_vram = -1; 309 } 310 311 if (pci && pci->agp.bridge) { 312 drm->agp.bridge = pci->agp.bridge; 313 drm->agp.base = pci->agp.base; 314 drm->agp.size = pci->agp.size; 315 drm->agp.cma = pci->agp.cma; 316 } 317 318 ret = ttm_bo_device_init(&drm->ttm.bdev, 319 &nouveau_bo_driver, 320 dev->anon_inode->i_mapping, 321 dev->vma_offset_manager, 322 drm->client.mmu.dmabits <= 32 ? true : false); 323 if (ret) { 324 NV_ERROR(drm, "error initialising bo driver, %d\n", ret); 325 return ret; 326 } 327 328 /* VRAM init */ 329 drm->gem.vram_available = drm->client.device.info.ram_user; 330 331 arch_io_reserve_memtype_wc(device->func->resource_addr(device, 1), 332 device->func->resource_size(device, 1)); 333 334 ret = nouveau_ttm_init_vram(drm); 335 if (ret) { 336 NV_ERROR(drm, "VRAM mm init failed, %d\n", ret); 337 return ret; 338 } 339 340 drm->ttm.mtrr = arch_phys_wc_add(device->func->resource_addr(device, 1), 341 device->func->resource_size(device, 1)); 342 343 /* GART init */ 344 if (!drm->agp.bridge) { 345 drm->gem.gart_available = drm->client.vmm.vmm.limit; 346 } else { 347 drm->gem.gart_available = drm->agp.size; 348 } 349 350 ret = nouveau_ttm_init_gtt(drm); 351 if (ret) { 352 NV_ERROR(drm, "GART mm init failed, %d\n", ret); 353 return ret; 354 } 355 356 mutex_init(&drm->ttm.io_reserve_mutex); 357 INIT_LIST_HEAD(&drm->ttm.io_reserve_lru); 358 359 NV_INFO(drm, "VRAM: %d MiB\n", (u32)(drm->gem.vram_available >> 20)); 360 NV_INFO(drm, "GART: %d MiB\n", (u32)(drm->gem.gart_available >> 20)); 361 return 0; 362 } 363 364 void 365 nouveau_ttm_fini(struct nouveau_drm *drm) 366 { 367 struct nvkm_device *device = nvxx_device(&drm->client.device); 368 369 nouveau_ttm_fini_vram(drm); 370 nouveau_ttm_fini_gtt(drm); 371 372 ttm_bo_device_release(&drm->ttm.bdev); 373 374 arch_phys_wc_del(drm->ttm.mtrr); 375 drm->ttm.mtrr = 0; 376 arch_io_free_memtype_wc(device->func->resource_addr(device, 1), 377 device->func->resource_size(device, 1)); 378 379 } 380