Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 Red Hat Inc. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the |
| 6 | * "Software"), to deal in the Software without restriction, including |
| 7 | * without limitation the rights to use, copy, modify, merge, publish, |
| 8 | * distribute, sub license, and/or sell copies of the Software, and to |
| 9 | * permit persons to whom the Software is furnished to do so, subject to |
| 10 | * the following conditions: |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 13 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| 15 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| 16 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| 17 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| 18 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 19 | * |
| 20 | * The above copyright notice and this permission notice (including the |
| 21 | * next paragraph) shall be included in all copies or substantial portions |
| 22 | * of the Software. |
| 23 | * |
| 24 | */ |
| 25 | /* |
| 26 | * Authors: Dave Airlie <airlied@redhat.com> |
| 27 | */ |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 28 | #include <drm/drmP.h> |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 29 | #include "mgag200_drv.h" |
| 30 | #include <ttm/ttm_page_alloc.h> |
| 31 | |
| 32 | static inline struct mga_device * |
| 33 | mgag200_bdev(struct ttm_bo_device *bd) |
| 34 | { |
| 35 | return container_of(bd, struct mga_device, ttm.bdev); |
| 36 | } |
| 37 | |
| 38 | static int |
| 39 | mgag200_ttm_mem_global_init(struct drm_global_reference *ref) |
| 40 | { |
| 41 | return ttm_mem_global_init(ref->object); |
| 42 | } |
| 43 | |
| 44 | static void |
| 45 | mgag200_ttm_mem_global_release(struct drm_global_reference *ref) |
| 46 | { |
| 47 | ttm_mem_global_release(ref->object); |
| 48 | } |
| 49 | |
| 50 | static int mgag200_ttm_global_init(struct mga_device *ast) |
| 51 | { |
| 52 | struct drm_global_reference *global_ref; |
| 53 | int r; |
| 54 | |
| 55 | global_ref = &ast->ttm.mem_global_ref; |
| 56 | global_ref->global_type = DRM_GLOBAL_TTM_MEM; |
| 57 | global_ref->size = sizeof(struct ttm_mem_global); |
| 58 | global_ref->init = &mgag200_ttm_mem_global_init; |
| 59 | global_ref->release = &mgag200_ttm_mem_global_release; |
| 60 | r = drm_global_item_ref(global_ref); |
| 61 | if (r != 0) { |
| 62 | DRM_ERROR("Failed setting up TTM memory accounting " |
| 63 | "subsystem.\n"); |
| 64 | return r; |
| 65 | } |
| 66 | |
| 67 | ast->ttm.bo_global_ref.mem_glob = |
| 68 | ast->ttm.mem_global_ref.object; |
| 69 | global_ref = &ast->ttm.bo_global_ref.ref; |
| 70 | global_ref->global_type = DRM_GLOBAL_TTM_BO; |
| 71 | global_ref->size = sizeof(struct ttm_bo_global); |
| 72 | global_ref->init = &ttm_bo_global_init; |
| 73 | global_ref->release = &ttm_bo_global_release; |
| 74 | r = drm_global_item_ref(global_ref); |
| 75 | if (r != 0) { |
| 76 | DRM_ERROR("Failed setting up TTM BO subsystem.\n"); |
| 77 | drm_global_item_unref(&ast->ttm.mem_global_ref); |
| 78 | return r; |
| 79 | } |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | void |
| 84 | mgag200_ttm_global_release(struct mga_device *ast) |
| 85 | { |
| 86 | if (ast->ttm.mem_global_ref.release == NULL) |
| 87 | return; |
| 88 | |
| 89 | drm_global_item_unref(&ast->ttm.bo_global_ref.ref); |
| 90 | drm_global_item_unref(&ast->ttm.mem_global_ref); |
| 91 | ast->ttm.mem_global_ref.release = NULL; |
| 92 | } |
| 93 | |
| 94 | |
| 95 | static void mgag200_bo_ttm_destroy(struct ttm_buffer_object *tbo) |
| 96 | { |
| 97 | struct mgag200_bo *bo; |
| 98 | |
| 99 | bo = container_of(tbo, struct mgag200_bo, bo); |
| 100 | |
| 101 | drm_gem_object_release(&bo->gem); |
| 102 | kfree(bo); |
| 103 | } |
| 104 | |
| 105 | bool mgag200_ttm_bo_is_mgag200_bo(struct ttm_buffer_object *bo) |
| 106 | { |
| 107 | if (bo->destroy == &mgag200_bo_ttm_destroy) |
| 108 | return true; |
| 109 | return false; |
| 110 | } |
| 111 | |
| 112 | static int |
| 113 | mgag200_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, |
| 114 | struct ttm_mem_type_manager *man) |
| 115 | { |
| 116 | switch (type) { |
| 117 | case TTM_PL_SYSTEM: |
| 118 | man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; |
| 119 | man->available_caching = TTM_PL_MASK_CACHING; |
| 120 | man->default_caching = TTM_PL_FLAG_CACHED; |
| 121 | break; |
| 122 | case TTM_PL_VRAM: |
| 123 | man->func = &ttm_bo_manager_func; |
| 124 | man->flags = TTM_MEMTYPE_FLAG_FIXED | |
| 125 | TTM_MEMTYPE_FLAG_MAPPABLE; |
| 126 | man->available_caching = TTM_PL_FLAG_UNCACHED | |
| 127 | TTM_PL_FLAG_WC; |
| 128 | man->default_caching = TTM_PL_FLAG_WC; |
| 129 | break; |
| 130 | default: |
| 131 | DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); |
| 132 | return -EINVAL; |
| 133 | } |
| 134 | return 0; |
| 135 | } |
| 136 | |
| 137 | static void |
| 138 | mgag200_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl) |
| 139 | { |
| 140 | struct mgag200_bo *mgabo = mgag200_bo(bo); |
| 141 | |
| 142 | if (!mgag200_ttm_bo_is_mgag200_bo(bo)) |
| 143 | return; |
| 144 | |
| 145 | mgag200_ttm_placement(mgabo, TTM_PL_FLAG_SYSTEM); |
| 146 | *pl = mgabo->placement; |
| 147 | } |
| 148 | |
| 149 | static int mgag200_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp) |
| 150 | { |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | static int mgag200_ttm_io_mem_reserve(struct ttm_bo_device *bdev, |
| 155 | struct ttm_mem_reg *mem) |
| 156 | { |
| 157 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
| 158 | struct mga_device *mdev = mgag200_bdev(bdev); |
| 159 | |
| 160 | mem->bus.addr = NULL; |
| 161 | mem->bus.offset = 0; |
| 162 | mem->bus.size = mem->num_pages << PAGE_SHIFT; |
| 163 | mem->bus.base = 0; |
| 164 | mem->bus.is_iomem = false; |
| 165 | if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) |
| 166 | return -EINVAL; |
| 167 | switch (mem->mem_type) { |
| 168 | case TTM_PL_SYSTEM: |
| 169 | /* system memory */ |
| 170 | return 0; |
| 171 | case TTM_PL_VRAM: |
| 172 | mem->bus.offset = mem->start << PAGE_SHIFT; |
| 173 | mem->bus.base = pci_resource_start(mdev->dev->pdev, 0); |
| 174 | mem->bus.is_iomem = true; |
| 175 | break; |
| 176 | default: |
| 177 | return -EINVAL; |
| 178 | break; |
| 179 | } |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | static void mgag200_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) |
| 184 | { |
| 185 | } |
| 186 | |
| 187 | static int mgag200_bo_move(struct ttm_buffer_object *bo, |
| 188 | bool evict, bool interruptible, |
Maarten Lankhorst | 97a875c | 2012-11-28 11:25:44 +0000 | [diff] [blame] | 189 | bool no_wait_gpu, |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 190 | struct ttm_mem_reg *new_mem) |
| 191 | { |
| 192 | int r; |
Maarten Lankhorst | 97a875c | 2012-11-28 11:25:44 +0000 | [diff] [blame] | 193 | r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 194 | return r; |
| 195 | } |
| 196 | |
| 197 | |
| 198 | static void mgag200_ttm_backend_destroy(struct ttm_tt *tt) |
| 199 | { |
| 200 | ttm_tt_fini(tt); |
| 201 | kfree(tt); |
| 202 | } |
| 203 | |
| 204 | static struct ttm_backend_func mgag200_tt_backend_func = { |
| 205 | .destroy = &mgag200_ttm_backend_destroy, |
| 206 | }; |
| 207 | |
| 208 | |
| 209 | struct ttm_tt *mgag200_ttm_tt_create(struct ttm_bo_device *bdev, |
| 210 | unsigned long size, uint32_t page_flags, |
| 211 | struct page *dummy_read_page) |
| 212 | { |
| 213 | struct ttm_tt *tt; |
| 214 | |
| 215 | tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); |
| 216 | if (tt == NULL) |
| 217 | return NULL; |
| 218 | tt->func = &mgag200_tt_backend_func; |
| 219 | if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) { |
| 220 | kfree(tt); |
| 221 | return NULL; |
| 222 | } |
| 223 | return tt; |
| 224 | } |
| 225 | |
| 226 | static int mgag200_ttm_tt_populate(struct ttm_tt *ttm) |
| 227 | { |
| 228 | return ttm_pool_populate(ttm); |
| 229 | } |
| 230 | |
| 231 | static void mgag200_ttm_tt_unpopulate(struct ttm_tt *ttm) |
| 232 | { |
| 233 | ttm_pool_unpopulate(ttm); |
| 234 | } |
| 235 | |
| 236 | struct ttm_bo_driver mgag200_bo_driver = { |
| 237 | .ttm_tt_create = mgag200_ttm_tt_create, |
| 238 | .ttm_tt_populate = mgag200_ttm_tt_populate, |
| 239 | .ttm_tt_unpopulate = mgag200_ttm_tt_unpopulate, |
| 240 | .init_mem_type = mgag200_bo_init_mem_type, |
| 241 | .evict_flags = mgag200_bo_evict_flags, |
| 242 | .move = mgag200_bo_move, |
| 243 | .verify_access = mgag200_bo_verify_access, |
| 244 | .io_mem_reserve = &mgag200_ttm_io_mem_reserve, |
| 245 | .io_mem_free = &mgag200_ttm_io_mem_free, |
| 246 | }; |
| 247 | |
| 248 | int mgag200_mm_init(struct mga_device *mdev) |
| 249 | { |
| 250 | int ret; |
| 251 | struct drm_device *dev = mdev->dev; |
| 252 | struct ttm_bo_device *bdev = &mdev->ttm.bdev; |
| 253 | |
| 254 | ret = mgag200_ttm_global_init(mdev); |
| 255 | if (ret) |
| 256 | return ret; |
| 257 | |
| 258 | ret = ttm_bo_device_init(&mdev->ttm.bdev, |
| 259 | mdev->ttm.bo_global_ref.ref.object, |
| 260 | &mgag200_bo_driver, DRM_FILE_PAGE_OFFSET, |
| 261 | true); |
| 262 | if (ret) { |
| 263 | DRM_ERROR("Error initialising bo driver; %d\n", ret); |
| 264 | return ret; |
| 265 | } |
| 266 | |
| 267 | ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM, mdev->mc.vram_size >> PAGE_SHIFT); |
| 268 | if (ret) { |
| 269 | DRM_ERROR("Failed ttm VRAM init: %d\n", ret); |
| 270 | return ret; |
| 271 | } |
| 272 | |
| 273 | mdev->fb_mtrr = drm_mtrr_add(pci_resource_start(dev->pdev, 0), |
| 274 | pci_resource_len(dev->pdev, 0), |
| 275 | DRM_MTRR_WC); |
| 276 | |
| 277 | return 0; |
| 278 | } |
| 279 | |
| 280 | void mgag200_mm_fini(struct mga_device *mdev) |
| 281 | { |
| 282 | struct drm_device *dev = mdev->dev; |
| 283 | ttm_bo_device_release(&mdev->ttm.bdev); |
| 284 | |
| 285 | mgag200_ttm_global_release(mdev); |
| 286 | |
| 287 | if (mdev->fb_mtrr >= 0) { |
| 288 | drm_mtrr_del(mdev->fb_mtrr, |
| 289 | pci_resource_start(dev->pdev, 0), |
| 290 | pci_resource_len(dev->pdev, 0), DRM_MTRR_WC); |
| 291 | mdev->fb_mtrr = -1; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | void mgag200_ttm_placement(struct mgag200_bo *bo, int domain) |
| 296 | { |
| 297 | u32 c = 0; |
| 298 | bo->placement.fpfn = 0; |
| 299 | bo->placement.lpfn = 0; |
| 300 | bo->placement.placement = bo->placements; |
| 301 | bo->placement.busy_placement = bo->placements; |
| 302 | if (domain & TTM_PL_FLAG_VRAM) |
| 303 | bo->placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM; |
| 304 | if (domain & TTM_PL_FLAG_SYSTEM) |
| 305 | bo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; |
| 306 | if (!c) |
| 307 | bo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; |
| 308 | bo->placement.num_placement = c; |
| 309 | bo->placement.num_busy_placement = c; |
| 310 | } |
| 311 | |
| 312 | int mgag200_bo_reserve(struct mgag200_bo *bo, bool no_wait) |
| 313 | { |
| 314 | int ret; |
| 315 | |
| 316 | ret = ttm_bo_reserve(&bo->bo, true, no_wait, false, 0); |
| 317 | if (ret) { |
| 318 | if (ret != -ERESTARTSYS) |
| 319 | DRM_ERROR("reserve failed %p\n", bo); |
| 320 | return ret; |
| 321 | } |
| 322 | return 0; |
| 323 | } |
| 324 | |
| 325 | void mgag200_bo_unreserve(struct mgag200_bo *bo) |
| 326 | { |
| 327 | ttm_bo_unreserve(&bo->bo); |
| 328 | } |
| 329 | |
| 330 | int mgag200_bo_create(struct drm_device *dev, int size, int align, |
| 331 | uint32_t flags, struct mgag200_bo **pmgabo) |
| 332 | { |
| 333 | struct mga_device *mdev = dev->dev_private; |
| 334 | struct mgag200_bo *mgabo; |
| 335 | size_t acc_size; |
| 336 | int ret; |
| 337 | |
| 338 | mgabo = kzalloc(sizeof(struct mgag200_bo), GFP_KERNEL); |
| 339 | if (!mgabo) |
| 340 | return -ENOMEM; |
| 341 | |
| 342 | ret = drm_gem_object_init(dev, &mgabo->gem, size); |
| 343 | if (ret) { |
| 344 | kfree(mgabo); |
| 345 | return ret; |
| 346 | } |
| 347 | |
| 348 | mgabo->gem.driver_private = NULL; |
| 349 | mgabo->bo.bdev = &mdev->ttm.bdev; |
| 350 | |
| 351 | mgag200_ttm_placement(mgabo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM); |
| 352 | |
| 353 | acc_size = ttm_bo_dma_acc_size(&mdev->ttm.bdev, size, |
| 354 | sizeof(struct mgag200_bo)); |
| 355 | |
| 356 | ret = ttm_bo_init(&mdev->ttm.bdev, &mgabo->bo, size, |
| 357 | ttm_bo_type_device, &mgabo->placement, |
Marcin Slusarz | 0b91c4a | 2012-11-06 21:49:51 +0000 | [diff] [blame] | 358 | align >> PAGE_SHIFT, false, NULL, acc_size, |
Dave Airlie | 5288b7b | 2012-05-23 14:08:41 +0100 | [diff] [blame] | 359 | NULL, mgag200_bo_ttm_destroy); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 360 | if (ret) |
| 361 | return ret; |
| 362 | |
| 363 | *pmgabo = mgabo; |
| 364 | return 0; |
| 365 | } |
| 366 | |
| 367 | static inline u64 mgag200_bo_gpu_offset(struct mgag200_bo *bo) |
| 368 | { |
| 369 | return bo->bo.offset; |
| 370 | } |
| 371 | |
| 372 | int mgag200_bo_pin(struct mgag200_bo *bo, u32 pl_flag, u64 *gpu_addr) |
| 373 | { |
| 374 | int i, ret; |
| 375 | |
| 376 | if (bo->pin_count) { |
| 377 | bo->pin_count++; |
| 378 | if (gpu_addr) |
| 379 | *gpu_addr = mgag200_bo_gpu_offset(bo); |
| 380 | } |
| 381 | |
| 382 | mgag200_ttm_placement(bo, pl_flag); |
| 383 | for (i = 0; i < bo->placement.num_placement; i++) |
| 384 | bo->placements[i] |= TTM_PL_FLAG_NO_EVICT; |
Maarten Lankhorst | 97a875c | 2012-11-28 11:25:44 +0000 | [diff] [blame] | 385 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 386 | if (ret) |
| 387 | return ret; |
| 388 | |
| 389 | bo->pin_count = 1; |
| 390 | if (gpu_addr) |
| 391 | *gpu_addr = mgag200_bo_gpu_offset(bo); |
| 392 | return 0; |
| 393 | } |
| 394 | |
| 395 | int mgag200_bo_unpin(struct mgag200_bo *bo) |
| 396 | { |
| 397 | int i, ret; |
| 398 | if (!bo->pin_count) { |
| 399 | DRM_ERROR("unpin bad %p\n", bo); |
| 400 | return 0; |
| 401 | } |
| 402 | bo->pin_count--; |
| 403 | if (bo->pin_count) |
| 404 | return 0; |
| 405 | |
| 406 | for (i = 0; i < bo->placement.num_placement ; i++) |
| 407 | bo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT; |
Maarten Lankhorst | 97a875c | 2012-11-28 11:25:44 +0000 | [diff] [blame] | 408 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 409 | if (ret) |
| 410 | return ret; |
| 411 | |
| 412 | return 0; |
| 413 | } |
| 414 | |
| 415 | int mgag200_bo_push_sysram(struct mgag200_bo *bo) |
| 416 | { |
| 417 | int i, ret; |
| 418 | if (!bo->pin_count) { |
| 419 | DRM_ERROR("unpin bad %p\n", bo); |
| 420 | return 0; |
| 421 | } |
| 422 | bo->pin_count--; |
| 423 | if (bo->pin_count) |
| 424 | return 0; |
| 425 | |
| 426 | if (bo->kmap.virtual) |
| 427 | ttm_bo_kunmap(&bo->kmap); |
| 428 | |
| 429 | mgag200_ttm_placement(bo, TTM_PL_FLAG_SYSTEM); |
| 430 | for (i = 0; i < bo->placement.num_placement ; i++) |
| 431 | bo->placements[i] |= TTM_PL_FLAG_NO_EVICT; |
| 432 | |
Maarten Lankhorst | 97a875c | 2012-11-28 11:25:44 +0000 | [diff] [blame] | 433 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 434 | if (ret) { |
| 435 | DRM_ERROR("pushing to VRAM failed\n"); |
| 436 | return ret; |
| 437 | } |
| 438 | return 0; |
| 439 | } |
| 440 | |
| 441 | int mgag200_mmap(struct file *filp, struct vm_area_struct *vma) |
| 442 | { |
| 443 | struct drm_file *file_priv; |
| 444 | struct mga_device *mdev; |
| 445 | |
| 446 | if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) |
| 447 | return drm_mmap(filp, vma); |
| 448 | |
| 449 | file_priv = filp->private_data; |
| 450 | mdev = file_priv->minor->dev->dev_private; |
| 451 | return ttm_bo_mmap(filp, vma, &mdev->ttm.bdev); |
| 452 | } |