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(); 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 } 343