Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify |
| 3 | * it under the terms of the GNU General Public License as published by |
| 4 | * the Free Software Foundation; either version 2 of the License, or |
| 5 | * (at your option) any later version. |
| 6 | */ |
| 7 | |
| 8 | #include "bochs.h" |
| 9 | |
| 10 | static void bochs_ttm_placement(struct bochs_bo *bo, int domain); |
| 11 | |
| 12 | /* ---------------------------------------------------------------------- */ |
| 13 | |
| 14 | static inline struct bochs_device *bochs_bdev(struct ttm_bo_device *bd) |
| 15 | { |
| 16 | return container_of(bd, struct bochs_device, ttm.bdev); |
| 17 | } |
| 18 | |
| 19 | static int bochs_ttm_mem_global_init(struct drm_global_reference *ref) |
| 20 | { |
| 21 | return ttm_mem_global_init(ref->object); |
| 22 | } |
| 23 | |
| 24 | static void bochs_ttm_mem_global_release(struct drm_global_reference *ref) |
| 25 | { |
| 26 | ttm_mem_global_release(ref->object); |
| 27 | } |
| 28 | |
| 29 | static int bochs_ttm_global_init(struct bochs_device *bochs) |
| 30 | { |
| 31 | struct drm_global_reference *global_ref; |
| 32 | int r; |
| 33 | |
| 34 | global_ref = &bochs->ttm.mem_global_ref; |
| 35 | global_ref->global_type = DRM_GLOBAL_TTM_MEM; |
| 36 | global_ref->size = sizeof(struct ttm_mem_global); |
| 37 | global_ref->init = &bochs_ttm_mem_global_init; |
| 38 | global_ref->release = &bochs_ttm_mem_global_release; |
| 39 | r = drm_global_item_ref(global_ref); |
| 40 | if (r != 0) { |
| 41 | DRM_ERROR("Failed setting up TTM memory accounting " |
| 42 | "subsystem.\n"); |
| 43 | return r; |
| 44 | } |
| 45 | |
| 46 | bochs->ttm.bo_global_ref.mem_glob = |
| 47 | bochs->ttm.mem_global_ref.object; |
| 48 | global_ref = &bochs->ttm.bo_global_ref.ref; |
| 49 | global_ref->global_type = DRM_GLOBAL_TTM_BO; |
| 50 | global_ref->size = sizeof(struct ttm_bo_global); |
| 51 | global_ref->init = &ttm_bo_global_init; |
| 52 | global_ref->release = &ttm_bo_global_release; |
| 53 | r = drm_global_item_ref(global_ref); |
| 54 | if (r != 0) { |
| 55 | DRM_ERROR("Failed setting up TTM BO subsystem.\n"); |
| 56 | drm_global_item_unref(&bochs->ttm.mem_global_ref); |
| 57 | return r; |
| 58 | } |
| 59 | |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | static void bochs_ttm_global_release(struct bochs_device *bochs) |
| 64 | { |
| 65 | if (bochs->ttm.mem_global_ref.release == NULL) |
| 66 | return; |
| 67 | |
| 68 | drm_global_item_unref(&bochs->ttm.bo_global_ref.ref); |
| 69 | drm_global_item_unref(&bochs->ttm.mem_global_ref); |
| 70 | bochs->ttm.mem_global_ref.release = NULL; |
| 71 | } |
| 72 | |
| 73 | |
| 74 | static void bochs_bo_ttm_destroy(struct ttm_buffer_object *tbo) |
| 75 | { |
| 76 | struct bochs_bo *bo; |
| 77 | |
| 78 | bo = container_of(tbo, struct bochs_bo, bo); |
| 79 | drm_gem_object_release(&bo->gem); |
| 80 | kfree(bo); |
| 81 | } |
| 82 | |
| 83 | static bool bochs_ttm_bo_is_bochs_bo(struct ttm_buffer_object *bo) |
| 84 | { |
| 85 | if (bo->destroy == &bochs_bo_ttm_destroy) |
| 86 | return true; |
| 87 | return false; |
| 88 | } |
| 89 | |
| 90 | static int bochs_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, |
| 91 | struct ttm_mem_type_manager *man) |
| 92 | { |
| 93 | switch (type) { |
| 94 | case TTM_PL_SYSTEM: |
| 95 | man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; |
| 96 | man->available_caching = TTM_PL_MASK_CACHING; |
| 97 | man->default_caching = TTM_PL_FLAG_CACHED; |
| 98 | break; |
| 99 | case TTM_PL_VRAM: |
| 100 | man->func = &ttm_bo_manager_func; |
| 101 | man->flags = TTM_MEMTYPE_FLAG_FIXED | |
| 102 | TTM_MEMTYPE_FLAG_MAPPABLE; |
| 103 | man->available_caching = TTM_PL_FLAG_UNCACHED | |
| 104 | TTM_PL_FLAG_WC; |
| 105 | man->default_caching = TTM_PL_FLAG_WC; |
| 106 | break; |
| 107 | default: |
| 108 | DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); |
| 109 | return -EINVAL; |
| 110 | } |
| 111 | return 0; |
| 112 | } |
| 113 | |
| 114 | static void |
| 115 | bochs_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl) |
| 116 | { |
| 117 | struct bochs_bo *bochsbo = bochs_bo(bo); |
| 118 | |
| 119 | if (!bochs_ttm_bo_is_bochs_bo(bo)) |
| 120 | return; |
| 121 | |
| 122 | bochs_ttm_placement(bochsbo, TTM_PL_FLAG_SYSTEM); |
| 123 | *pl = bochsbo->placement; |
| 124 | } |
| 125 | |
| 126 | static int bochs_bo_verify_access(struct ttm_buffer_object *bo, |
| 127 | struct file *filp) |
| 128 | { |
| 129 | struct bochs_bo *bochsbo = bochs_bo(bo); |
| 130 | |
David Herrmann | d9a1f0b | 2016-09-01 14:48:33 +0200 | [diff] [blame] | 131 | return drm_vma_node_verify_access(&bochsbo->gem.vma_node, |
| 132 | filp->private_data); |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | static int bochs_ttm_io_mem_reserve(struct ttm_bo_device *bdev, |
| 136 | struct ttm_mem_reg *mem) |
| 137 | { |
| 138 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
| 139 | struct bochs_device *bochs = bochs_bdev(bdev); |
| 140 | |
| 141 | mem->bus.addr = NULL; |
| 142 | mem->bus.offset = 0; |
| 143 | mem->bus.size = mem->num_pages << PAGE_SHIFT; |
| 144 | mem->bus.base = 0; |
| 145 | mem->bus.is_iomem = false; |
| 146 | if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) |
| 147 | return -EINVAL; |
| 148 | switch (mem->mem_type) { |
| 149 | case TTM_PL_SYSTEM: |
| 150 | /* system memory */ |
| 151 | return 0; |
| 152 | case TTM_PL_VRAM: |
| 153 | mem->bus.offset = mem->start << PAGE_SHIFT; |
| 154 | mem->bus.base = bochs->fb_base; |
| 155 | mem->bus.is_iomem = true; |
| 156 | break; |
| 157 | default: |
| 158 | return -EINVAL; |
| 159 | break; |
| 160 | } |
| 161 | return 0; |
| 162 | } |
| 163 | |
| 164 | static void bochs_ttm_io_mem_free(struct ttm_bo_device *bdev, |
| 165 | struct ttm_mem_reg *mem) |
| 166 | { |
| 167 | } |
| 168 | |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 169 | static void bochs_ttm_backend_destroy(struct ttm_tt *tt) |
| 170 | { |
| 171 | ttm_tt_fini(tt); |
| 172 | kfree(tt); |
| 173 | } |
| 174 | |
| 175 | static struct ttm_backend_func bochs_tt_backend_func = { |
| 176 | .destroy = &bochs_ttm_backend_destroy, |
| 177 | }; |
| 178 | |
| 179 | static struct ttm_tt *bochs_ttm_tt_create(struct ttm_bo_device *bdev, |
| 180 | unsigned long size, |
| 181 | uint32_t page_flags, |
| 182 | struct page *dummy_read_page) |
| 183 | { |
| 184 | struct ttm_tt *tt; |
| 185 | |
| 186 | tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); |
| 187 | if (tt == NULL) |
| 188 | return NULL; |
| 189 | tt->func = &bochs_tt_backend_func; |
| 190 | if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) { |
| 191 | kfree(tt); |
| 192 | return NULL; |
| 193 | } |
| 194 | return tt; |
| 195 | } |
| 196 | |
| 197 | struct ttm_bo_driver bochs_bo_driver = { |
| 198 | .ttm_tt_create = bochs_ttm_tt_create, |
| 199 | .ttm_tt_populate = ttm_pool_populate, |
| 200 | .ttm_tt_unpopulate = ttm_pool_unpopulate, |
| 201 | .init_mem_type = bochs_bo_init_mem_type, |
Christian König | a2ab19fe | 2016-08-30 17:26:04 +0200 | [diff] [blame] | 202 | .eviction_valuable = ttm_bo_eviction_valuable, |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 203 | .evict_flags = bochs_bo_evict_flags, |
Christian König | 1888577 | 2016-06-06 10:17:52 +0200 | [diff] [blame] | 204 | .move = NULL, |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 205 | .verify_access = bochs_bo_verify_access, |
| 206 | .io_mem_reserve = &bochs_ttm_io_mem_reserve, |
| 207 | .io_mem_free = &bochs_ttm_io_mem_free, |
Christian König | ea642c3 | 2017-03-28 16:54:50 +0200 | [diff] [blame] | 208 | .io_mem_pfn = ttm_bo_default_io_mem_pfn, |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 209 | }; |
| 210 | |
| 211 | int bochs_mm_init(struct bochs_device *bochs) |
| 212 | { |
| 213 | struct ttm_bo_device *bdev = &bochs->ttm.bdev; |
| 214 | int ret; |
| 215 | |
| 216 | ret = bochs_ttm_global_init(bochs); |
| 217 | if (ret) |
| 218 | return ret; |
| 219 | |
| 220 | ret = ttm_bo_device_init(&bochs->ttm.bdev, |
| 221 | bochs->ttm.bo_global_ref.ref.object, |
David Herrmann | 44d847b | 2013-08-13 19:10:30 +0200 | [diff] [blame] | 222 | &bochs_bo_driver, |
| 223 | bochs->dev->anon_inode->i_mapping, |
| 224 | DRM_FILE_PAGE_OFFSET, |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 225 | true); |
| 226 | if (ret) { |
| 227 | DRM_ERROR("Error initialising bo driver; %d\n", ret); |
| 228 | return ret; |
| 229 | } |
| 230 | |
| 231 | ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM, |
| 232 | bochs->fb_size >> PAGE_SHIFT); |
| 233 | if (ret) { |
| 234 | DRM_ERROR("Failed ttm VRAM init: %d\n", ret); |
| 235 | return ret; |
| 236 | } |
| 237 | |
| 238 | bochs->ttm.initialized = true; |
| 239 | return 0; |
| 240 | } |
| 241 | |
| 242 | void bochs_mm_fini(struct bochs_device *bochs) |
| 243 | { |
| 244 | if (!bochs->ttm.initialized) |
| 245 | return; |
| 246 | |
| 247 | ttm_bo_device_release(&bochs->ttm.bdev); |
| 248 | bochs_ttm_global_release(bochs); |
| 249 | bochs->ttm.initialized = false; |
| 250 | } |
| 251 | |
| 252 | static void bochs_ttm_placement(struct bochs_bo *bo, int domain) |
| 253 | { |
Christian König | f1217ed | 2014-08-27 13:16:04 +0200 | [diff] [blame] | 254 | unsigned i; |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 255 | u32 c = 0; |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 256 | bo->placement.placement = bo->placements; |
| 257 | bo->placement.busy_placement = bo->placements; |
| 258 | if (domain & TTM_PL_FLAG_VRAM) { |
Christian König | f1217ed | 2014-08-27 13:16:04 +0200 | [diff] [blame] | 259 | bo->placements[c++].flags = TTM_PL_FLAG_WC |
| 260 | | TTM_PL_FLAG_UNCACHED |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 261 | | TTM_PL_FLAG_VRAM; |
| 262 | } |
| 263 | if (domain & TTM_PL_FLAG_SYSTEM) { |
Christian König | f1217ed | 2014-08-27 13:16:04 +0200 | [diff] [blame] | 264 | bo->placements[c++].flags = TTM_PL_MASK_CACHING |
| 265 | | TTM_PL_FLAG_SYSTEM; |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 266 | } |
| 267 | if (!c) { |
Christian König | f1217ed | 2014-08-27 13:16:04 +0200 | [diff] [blame] | 268 | bo->placements[c++].flags = TTM_PL_MASK_CACHING |
| 269 | | TTM_PL_FLAG_SYSTEM; |
| 270 | } |
| 271 | for (i = 0; i < c; ++i) { |
| 272 | bo->placements[i].fpfn = 0; |
| 273 | bo->placements[i].lpfn = 0; |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 274 | } |
| 275 | bo->placement.num_placement = c; |
| 276 | bo->placement.num_busy_placement = c; |
| 277 | } |
| 278 | |
| 279 | static inline u64 bochs_bo_gpu_offset(struct bochs_bo *bo) |
| 280 | { |
| 281 | return bo->bo.offset; |
| 282 | } |
| 283 | |
| 284 | int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag, u64 *gpu_addr) |
| 285 | { |
| 286 | int i, ret; |
| 287 | |
| 288 | if (bo->pin_count) { |
| 289 | bo->pin_count++; |
| 290 | if (gpu_addr) |
| 291 | *gpu_addr = bochs_bo_gpu_offset(bo); |
| 292 | return 0; |
| 293 | } |
| 294 | |
| 295 | bochs_ttm_placement(bo, pl_flag); |
| 296 | for (i = 0; i < bo->placement.num_placement; i++) |
Christian König | f1217ed | 2014-08-27 13:16:04 +0200 | [diff] [blame] | 297 | bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 298 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
| 299 | if (ret) |
| 300 | return ret; |
| 301 | |
| 302 | bo->pin_count = 1; |
| 303 | if (gpu_addr) |
| 304 | *gpu_addr = bochs_bo_gpu_offset(bo); |
| 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | int bochs_bo_unpin(struct bochs_bo *bo) |
| 309 | { |
| 310 | int i, ret; |
| 311 | |
| 312 | if (!bo->pin_count) { |
| 313 | DRM_ERROR("unpin bad %p\n", bo); |
| 314 | return 0; |
| 315 | } |
| 316 | bo->pin_count--; |
| 317 | |
| 318 | if (bo->pin_count) |
| 319 | return 0; |
| 320 | |
| 321 | for (i = 0; i < bo->placement.num_placement; i++) |
Christian König | f1217ed | 2014-08-27 13:16:04 +0200 | [diff] [blame] | 322 | bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT; |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 323 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
| 324 | if (ret) |
| 325 | return ret; |
| 326 | |
| 327 | return 0; |
| 328 | } |
| 329 | |
| 330 | int bochs_mmap(struct file *filp, struct vm_area_struct *vma) |
| 331 | { |
| 332 | struct drm_file *file_priv; |
| 333 | struct bochs_device *bochs; |
| 334 | |
| 335 | if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) |
Daniel Vetter | 884c6da | 2014-09-23 15:46:47 +0200 | [diff] [blame] | 336 | return -EINVAL; |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 337 | |
| 338 | file_priv = filp->private_data; |
| 339 | bochs = file_priv->minor->dev->dev_private; |
| 340 | return ttm_bo_mmap(filp, vma, &bochs->ttm.bdev); |
| 341 | } |
| 342 | |
| 343 | /* ---------------------------------------------------------------------- */ |
| 344 | |
| 345 | static int bochs_bo_create(struct drm_device *dev, int size, int align, |
| 346 | uint32_t flags, struct bochs_bo **pbochsbo) |
| 347 | { |
| 348 | struct bochs_device *bochs = dev->dev_private; |
| 349 | struct bochs_bo *bochsbo; |
| 350 | size_t acc_size; |
| 351 | int ret; |
| 352 | |
| 353 | bochsbo = kzalloc(sizeof(struct bochs_bo), GFP_KERNEL); |
| 354 | if (!bochsbo) |
| 355 | return -ENOMEM; |
| 356 | |
| 357 | ret = drm_gem_object_init(dev, &bochsbo->gem, size); |
| 358 | if (ret) { |
| 359 | kfree(bochsbo); |
| 360 | return ret; |
| 361 | } |
| 362 | |
| 363 | bochsbo->bo.bdev = &bochs->ttm.bdev; |
David Herrmann | 6796cb1 | 2014-01-03 14:24:19 +0100 | [diff] [blame] | 364 | bochsbo->bo.bdev->dev_mapping = dev->anon_inode->i_mapping; |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 365 | |
| 366 | bochs_ttm_placement(bochsbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM); |
| 367 | |
| 368 | acc_size = ttm_bo_dma_acc_size(&bochs->ttm.bdev, size, |
| 369 | sizeof(struct bochs_bo)); |
| 370 | |
| 371 | ret = ttm_bo_init(&bochs->ttm.bdev, &bochsbo->bo, size, |
| 372 | ttm_bo_type_device, &bochsbo->placement, |
| 373 | align >> PAGE_SHIFT, false, NULL, acc_size, |
Maarten Lankhorst | f4f4e3e | 2014-01-09 11:03:15 +0100 | [diff] [blame] | 374 | NULL, NULL, bochs_bo_ttm_destroy); |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 375 | if (ret) |
| 376 | return ret; |
| 377 | |
| 378 | *pbochsbo = bochsbo; |
| 379 | return 0; |
| 380 | } |
| 381 | |
| 382 | int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel, |
| 383 | struct drm_gem_object **obj) |
| 384 | { |
| 385 | struct bochs_bo *bochsbo; |
| 386 | int ret; |
| 387 | |
| 388 | *obj = NULL; |
| 389 | |
Fabian Frederick | a8ba29c | 2014-07-01 21:02:03 +0200 | [diff] [blame] | 390 | size = PAGE_ALIGN(size); |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 391 | if (size == 0) |
| 392 | return -EINVAL; |
| 393 | |
| 394 | ret = bochs_bo_create(dev, size, 0, 0, &bochsbo); |
| 395 | if (ret) { |
| 396 | if (ret != -ERESTARTSYS) |
| 397 | DRM_ERROR("failed to allocate GEM object\n"); |
| 398 | return ret; |
| 399 | } |
| 400 | *obj = &bochsbo->gem; |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | int bochs_dumb_create(struct drm_file *file, struct drm_device *dev, |
| 405 | struct drm_mode_create_dumb *args) |
| 406 | { |
| 407 | struct drm_gem_object *gobj; |
| 408 | u32 handle; |
| 409 | int ret; |
| 410 | |
| 411 | args->pitch = args->width * ((args->bpp + 7) / 8); |
| 412 | args->size = args->pitch * args->height; |
| 413 | |
| 414 | ret = bochs_gem_create(dev, args->size, false, |
| 415 | &gobj); |
| 416 | if (ret) |
| 417 | return ret; |
| 418 | |
| 419 | ret = drm_gem_handle_create(file, gobj, &handle); |
| 420 | drm_gem_object_unreference_unlocked(gobj); |
| 421 | if (ret) |
| 422 | return ret; |
| 423 | |
| 424 | args->handle = handle; |
| 425 | return 0; |
| 426 | } |
| 427 | |
| 428 | static void bochs_bo_unref(struct bochs_bo **bo) |
| 429 | { |
| 430 | struct ttm_buffer_object *tbo; |
| 431 | |
| 432 | if ((*bo) == NULL) |
| 433 | return; |
| 434 | |
| 435 | tbo = &((*bo)->bo); |
| 436 | ttm_bo_unref(&tbo); |
Daniel Vetter | dcb1ee5 | 2014-04-05 10:43:37 +0200 | [diff] [blame] | 437 | *bo = NULL; |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | void bochs_gem_free_object(struct drm_gem_object *obj) |
| 441 | { |
| 442 | struct bochs_bo *bochs_bo = gem_to_bochs_bo(obj); |
| 443 | |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 444 | bochs_bo_unref(&bochs_bo); |
| 445 | } |
| 446 | |
| 447 | int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev, |
| 448 | uint32_t handle, uint64_t *offset) |
| 449 | { |
| 450 | struct drm_gem_object *obj; |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 451 | struct bochs_bo *bo; |
| 452 | |
Chris Wilson | a8ad0bd | 2016-05-09 11:04:54 +0100 | [diff] [blame] | 453 | obj = drm_gem_object_lookup(file, handle); |
Daniel Vetter | 37ae75c | 2015-07-09 23:32:37 +0200 | [diff] [blame] | 454 | if (obj == NULL) |
| 455 | return -ENOENT; |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 456 | |
| 457 | bo = gem_to_bochs_bo(obj); |
| 458 | *offset = bochs_bo_mmap_offset(bo); |
| 459 | |
Daniel Vetter | 37ae75c | 2015-07-09 23:32:37 +0200 | [diff] [blame] | 460 | drm_gem_object_unreference_unlocked(obj); |
| 461 | return 0; |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | /* ---------------------------------------------------------------------- */ |
| 465 | |
| 466 | static void bochs_user_framebuffer_destroy(struct drm_framebuffer *fb) |
| 467 | { |
| 468 | struct bochs_framebuffer *bochs_fb = to_bochs_framebuffer(fb); |
Markus Elfring | d3ae255 | 2016-07-15 14:23:15 +0200 | [diff] [blame] | 469 | |
| 470 | drm_gem_object_unreference_unlocked(bochs_fb->obj); |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 471 | drm_framebuffer_cleanup(fb); |
| 472 | kfree(fb); |
| 473 | } |
| 474 | |
| 475 | static const struct drm_framebuffer_funcs bochs_fb_funcs = { |
| 476 | .destroy = bochs_user_framebuffer_destroy, |
| 477 | }; |
| 478 | |
| 479 | int bochs_framebuffer_init(struct drm_device *dev, |
| 480 | struct bochs_framebuffer *gfb, |
Ville Syrjälä | 1eb8345 | 2015-11-11 19:11:29 +0200 | [diff] [blame] | 481 | const struct drm_mode_fb_cmd2 *mode_cmd, |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 482 | struct drm_gem_object *obj) |
| 483 | { |
| 484 | int ret; |
| 485 | |
Ville Syrjälä | a3f913c | 2016-12-14 22:48:59 +0200 | [diff] [blame] | 486 | drm_helper_mode_fill_fb_struct(dev, &gfb->base, mode_cmd); |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 487 | gfb->obj = obj; |
| 488 | ret = drm_framebuffer_init(dev, &gfb->base, &bochs_fb_funcs); |
| 489 | if (ret) { |
| 490 | DRM_ERROR("drm_framebuffer_init failed: %d\n", ret); |
| 491 | return ret; |
| 492 | } |
| 493 | return 0; |
| 494 | } |
| 495 | |
| 496 | static struct drm_framebuffer * |
| 497 | bochs_user_framebuffer_create(struct drm_device *dev, |
| 498 | struct drm_file *filp, |
Ville Syrjälä | 1eb8345 | 2015-11-11 19:11:29 +0200 | [diff] [blame] | 499 | const struct drm_mode_fb_cmd2 *mode_cmd) |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 500 | { |
| 501 | struct drm_gem_object *obj; |
| 502 | struct bochs_framebuffer *bochs_fb; |
| 503 | int ret; |
| 504 | |
| 505 | DRM_DEBUG_DRIVER("%dx%d, format %c%c%c%c\n", |
| 506 | mode_cmd->width, mode_cmd->height, |
| 507 | (mode_cmd->pixel_format) & 0xff, |
| 508 | (mode_cmd->pixel_format >> 8) & 0xff, |
| 509 | (mode_cmd->pixel_format >> 16) & 0xff, |
| 510 | (mode_cmd->pixel_format >> 24) & 0xff); |
| 511 | |
| 512 | if (mode_cmd->pixel_format != DRM_FORMAT_XRGB8888) |
| 513 | return ERR_PTR(-ENOENT); |
| 514 | |
Chris Wilson | a8ad0bd | 2016-05-09 11:04:54 +0100 | [diff] [blame] | 515 | obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]); |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 516 | if (obj == NULL) |
| 517 | return ERR_PTR(-ENOENT); |
| 518 | |
| 519 | bochs_fb = kzalloc(sizeof(*bochs_fb), GFP_KERNEL); |
| 520 | if (!bochs_fb) { |
| 521 | drm_gem_object_unreference_unlocked(obj); |
| 522 | return ERR_PTR(-ENOMEM); |
| 523 | } |
| 524 | |
| 525 | ret = bochs_framebuffer_init(dev, bochs_fb, mode_cmd, obj); |
| 526 | if (ret) { |
| 527 | drm_gem_object_unreference_unlocked(obj); |
| 528 | kfree(bochs_fb); |
| 529 | return ERR_PTR(ret); |
| 530 | } |
| 531 | return &bochs_fb->base; |
| 532 | } |
| 533 | |
| 534 | const struct drm_mode_config_funcs bochs_mode_funcs = { |
| 535 | .fb_create = bochs_user_framebuffer_create, |
| 536 | }; |