qxl_ioctl.c revision 1d6ac185c32134233f77ce44800ceb4ab9361401
1/* 2 * Copyright 2013 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 "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Dave Airlie 23 * Alon Levy 24 */ 25 26#include "qxl_drv.h" 27#include "qxl_object.h" 28 29/* 30 * TODO: allocating a new gem(in qxl_bo) for each request. 31 * This is wasteful since bo's are page aligned. 32 */ 33static int qxl_alloc_ioctl(struct drm_device *dev, void *data, 34 struct drm_file *file_priv) 35{ 36 struct qxl_device *qdev = dev->dev_private; 37 struct drm_qxl_alloc *qxl_alloc = data; 38 int ret; 39 struct qxl_bo *qobj; 40 uint32_t handle; 41 u32 domain = QXL_GEM_DOMAIN_VRAM; 42 43 if (qxl_alloc->size == 0) { 44 DRM_ERROR("invalid size %d\n", qxl_alloc->size); 45 return -EINVAL; 46 } 47 ret = qxl_gem_object_create_with_handle(qdev, file_priv, 48 domain, 49 qxl_alloc->size, 50 NULL, 51 &qobj, &handle); 52 if (ret) { 53 DRM_ERROR("%s: failed to create gem ret=%d\n", 54 __func__, ret); 55 return -ENOMEM; 56 } 57 qxl_alloc->handle = handle; 58 return 0; 59} 60 61static int qxl_map_ioctl(struct drm_device *dev, void *data, 62 struct drm_file *file_priv) 63{ 64 struct qxl_device *qdev = dev->dev_private; 65 struct drm_qxl_map *qxl_map = data; 66 67 return qxl_mode_dumb_mmap(file_priv, qdev->ddev, qxl_map->handle, 68 &qxl_map->offset); 69} 70 71struct qxl_reloc_info { 72 int type; 73 struct qxl_bo *dst_bo; 74 uint32_t dst_offset; 75 struct qxl_bo *src_bo; 76 int src_offset; 77}; 78 79/* 80 * dst must be validated, i.e. whole bo on vram/surfacesram (right now all bo's 81 * are on vram). 82 * *(dst + dst_off) = qxl_bo_physical_address(src, src_off) 83 */ 84static void 85apply_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info) 86{ 87 void *reloc_page; 88 reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK); 89 *(uint64_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = qxl_bo_physical_address(qdev, 90 info->src_bo, 91 info->src_offset); 92 qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page); 93} 94 95static void 96apply_surf_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info) 97{ 98 uint32_t id = 0; 99 void *reloc_page; 100 101 if (info->src_bo && !info->src_bo->is_primary) 102 id = info->src_bo->surface_id; 103 104 reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK); 105 *(uint32_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = id; 106 qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page); 107} 108 109/* return holding the reference to this object */ 110static struct qxl_bo *qxlhw_handle_to_bo(struct qxl_device *qdev, 111 struct drm_file *file_priv, uint64_t handle, 112 struct qxl_release *release) 113{ 114 struct drm_gem_object *gobj; 115 struct qxl_bo *qobj; 116 int ret; 117 118 gobj = drm_gem_object_lookup(qdev->ddev, file_priv, handle); 119 if (!gobj) 120 return NULL; 121 122 qobj = gem_to_qxl_bo(gobj); 123 124 ret = qxl_release_list_add(release, qobj); 125 if (ret) 126 return NULL; 127 128 return qobj; 129} 130 131/* 132 * Usage of execbuffer: 133 * Relocations need to take into account the full QXLDrawable size. 134 * However, the command as passed from user space must *not* contain the initial 135 * QXLReleaseInfo struct (first XXX bytes) 136 */ 137static int qxl_process_single_command(struct qxl_device *qdev, 138 struct drm_qxl_command *cmd, 139 struct drm_file *file_priv) 140{ 141 struct qxl_reloc_info *reloc_info; 142 int release_type; 143 struct qxl_release *release; 144 struct qxl_bo *cmd_bo; 145 void *fb_cmd; 146 int i, j, ret, num_relocs; 147 int unwritten; 148 149 switch (cmd->type) { 150 case QXL_CMD_DRAW: 151 release_type = QXL_RELEASE_DRAWABLE; 152 break; 153 case QXL_CMD_SURFACE: 154 case QXL_CMD_CURSOR: 155 default: 156 DRM_DEBUG("Only draw commands in execbuffers\n"); 157 return -EINVAL; 158 break; 159 } 160 161 if (cmd->command_size > PAGE_SIZE - sizeof(union qxl_release_info)) 162 return -EINVAL; 163 164 if (!access_ok(VERIFY_READ, 165 (void *)(unsigned long)cmd->command, 166 cmd->command_size)) 167 return -EFAULT; 168 169 reloc_info = kmalloc(sizeof(struct qxl_reloc_info) * cmd->relocs_num, GFP_KERNEL); 170 if (!reloc_info) 171 return -ENOMEM; 172 173 ret = qxl_alloc_release_reserved(qdev, 174 sizeof(union qxl_release_info) + 175 cmd->command_size, 176 release_type, 177 &release, 178 &cmd_bo); 179 if (ret) 180 goto out_free_reloc; 181 182 /* TODO copy slow path code from i915 */ 183 fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_SIZE)); 184 unwritten = __copy_from_user_inatomic_nocache(fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_SIZE), (void *)(unsigned long)cmd->command, cmd->command_size); 185 186 { 187 struct qxl_drawable *draw = fb_cmd; 188 draw->mm_time = qdev->rom->mm_clock; 189 } 190 191 qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd); 192 if (unwritten) { 193 DRM_ERROR("got unwritten %d\n", unwritten); 194 ret = -EFAULT; 195 goto out_free_release; 196 } 197 198 /* fill out reloc info structs */ 199 num_relocs = 0; 200 for (i = 0; i < cmd->relocs_num; ++i) { 201 struct drm_qxl_reloc reloc; 202 203 if (copy_from_user(&reloc, 204 &((struct drm_qxl_reloc *)(uintptr_t)cmd->relocs)[i], 205 sizeof(reloc))) { 206 ret = -EFAULT; 207 goto out_free_bos; 208 } 209 210 /* add the bos to the list of bos to validate - 211 need to validate first then process relocs? */ 212 if (reloc.reloc_type != QXL_RELOC_TYPE_BO && reloc.reloc_type != QXL_RELOC_TYPE_SURF) { 213 DRM_DEBUG("unknown reloc type %d\n", reloc_info[i].type); 214 215 ret = -EINVAL; 216 goto out_free_bos; 217 } 218 reloc_info[i].type = reloc.reloc_type; 219 220 if (reloc.dst_handle) { 221 reloc_info[i].dst_bo = qxlhw_handle_to_bo(qdev, file_priv, 222 reloc.dst_handle, release); 223 if (!reloc_info[i].dst_bo) { 224 ret = -EINVAL; 225 reloc_info[i].src_bo = NULL; 226 goto out_free_bos; 227 } 228 reloc_info[i].dst_offset = reloc.dst_offset; 229 } else { 230 reloc_info[i].dst_bo = cmd_bo; 231 reloc_info[i].dst_offset = reloc.dst_offset + release->release_offset; 232 } 233 num_relocs++; 234 235 /* reserve and validate the reloc dst bo */ 236 if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle > 0) { 237 reloc_info[i].src_bo = 238 qxlhw_handle_to_bo(qdev, file_priv, 239 reloc.src_handle, release); 240 if (!reloc_info[i].src_bo) { 241 if (reloc_info[i].dst_bo != cmd_bo) 242 drm_gem_object_unreference_unlocked(&reloc_info[i].dst_bo->gem_base); 243 ret = -EINVAL; 244 goto out_free_bos; 245 } 246 reloc_info[i].src_offset = reloc.src_offset; 247 } else { 248 reloc_info[i].src_bo = NULL; 249 reloc_info[i].src_offset = 0; 250 } 251 } 252 253 /* validate all buffers */ 254 ret = qxl_release_reserve_list(release, false); 255 if (ret) 256 goto out_free_bos; 257 258 for (i = 0; i < cmd->relocs_num; ++i) { 259 if (reloc_info[i].type == QXL_RELOC_TYPE_BO) 260 apply_reloc(qdev, &reloc_info[i]); 261 else if (reloc_info[i].type == QXL_RELOC_TYPE_SURF) 262 apply_surf_reloc(qdev, &reloc_info[i]); 263 } 264 265 ret = qxl_push_command_ring_release(qdev, release, cmd->type, true); 266 if (ret) 267 qxl_release_backoff_reserve_list(release); 268 else 269 qxl_release_fence_buffer_objects(release); 270 271out_free_bos: 272 for (j = 0; j < num_relocs; j++) { 273 if (reloc_info[j].dst_bo != cmd_bo) 274 drm_gem_object_unreference_unlocked(&reloc_info[j].dst_bo->gem_base); 275 if (reloc_info[j].src_bo && reloc_info[j].src_bo != cmd_bo) 276 drm_gem_object_unreference_unlocked(&reloc_info[j].src_bo->gem_base); 277 } 278out_free_release: 279 if (ret) 280 qxl_release_free(qdev, release); 281out_free_reloc: 282 kfree(reloc_info); 283 return ret; 284} 285 286static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, 287 struct drm_file *file_priv) 288{ 289 struct qxl_device *qdev = dev->dev_private; 290 struct drm_qxl_execbuffer *execbuffer = data; 291 struct drm_qxl_command user_cmd; 292 int cmd_num; 293 int ret; 294 295 for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) { 296 297 struct drm_qxl_command *commands = 298 (struct drm_qxl_command *)(uintptr_t)execbuffer->commands; 299 300 if (copy_from_user(&user_cmd, &commands[cmd_num], 301 sizeof(user_cmd))) 302 return -EFAULT; 303 304 ret = qxl_process_single_command(qdev, &user_cmd, file_priv); 305 if (ret) 306 return ret; 307 } 308 return 0; 309} 310 311static int qxl_update_area_ioctl(struct drm_device *dev, void *data, 312 struct drm_file *file) 313{ 314 struct qxl_device *qdev = dev->dev_private; 315 struct drm_qxl_update_area *update_area = data; 316 struct qxl_rect area = {.left = update_area->left, 317 .top = update_area->top, 318 .right = update_area->right, 319 .bottom = update_area->bottom}; 320 int ret; 321 struct drm_gem_object *gobj = NULL; 322 struct qxl_bo *qobj = NULL; 323 324 if (update_area->left >= update_area->right || 325 update_area->top >= update_area->bottom) 326 return -EINVAL; 327 328 gobj = drm_gem_object_lookup(dev, file, update_area->handle); 329 if (gobj == NULL) 330 return -ENOENT; 331 332 qobj = gem_to_qxl_bo(gobj); 333 334 ret = qxl_bo_reserve(qobj, false); 335 if (ret) 336 goto out; 337 338 if (!qobj->pin_count) { 339 qxl_ttm_placement_from_domain(qobj, qobj->type, false); 340 ret = ttm_bo_validate(&qobj->tbo, &qobj->placement, 341 true, false); 342 if (unlikely(ret)) 343 goto out; 344 } 345 346 ret = qxl_bo_check_id(qdev, qobj); 347 if (ret) 348 goto out2; 349 if (!qobj->surface_id) 350 DRM_ERROR("got update area for surface with no id %d\n", update_area->handle); 351 ret = qxl_io_update_area(qdev, qobj, &area); 352 353out2: 354 qxl_bo_unreserve(qobj); 355 356out: 357 drm_gem_object_unreference_unlocked(gobj); 358 return ret; 359} 360 361static int qxl_getparam_ioctl(struct drm_device *dev, void *data, 362 struct drm_file *file_priv) 363{ 364 struct qxl_device *qdev = dev->dev_private; 365 struct drm_qxl_getparam *param = data; 366 367 switch (param->param) { 368 case QXL_PARAM_NUM_SURFACES: 369 param->value = qdev->rom->n_surfaces; 370 break; 371 case QXL_PARAM_MAX_RELOCS: 372 param->value = QXL_MAX_RES; 373 break; 374 default: 375 return -EINVAL; 376 } 377 return 0; 378} 379 380static int qxl_clientcap_ioctl(struct drm_device *dev, void *data, 381 struct drm_file *file_priv) 382{ 383 struct qxl_device *qdev = dev->dev_private; 384 struct drm_qxl_clientcap *param = data; 385 int byte, idx; 386 387 byte = param->index / 8; 388 idx = param->index % 8; 389 390 if (qdev->pdev->revision < 4) 391 return -ENOSYS; 392 393 if (byte >= 58) 394 return -ENOSYS; 395 396 if (qdev->rom->client_capabilities[byte] & (1 << idx)) 397 return 0; 398 return -ENOSYS; 399} 400 401static int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data, 402 struct drm_file *file) 403{ 404 struct qxl_device *qdev = dev->dev_private; 405 struct drm_qxl_alloc_surf *param = data; 406 struct qxl_bo *qobj; 407 int handle; 408 int ret; 409 int size, actual_stride; 410 struct qxl_surface surf; 411 412 /* work out size allocate bo with handle */ 413 actual_stride = param->stride < 0 ? -param->stride : param->stride; 414 size = actual_stride * param->height + actual_stride; 415 416 surf.format = param->format; 417 surf.width = param->width; 418 surf.height = param->height; 419 surf.stride = param->stride; 420 surf.data = 0; 421 422 ret = qxl_gem_object_create_with_handle(qdev, file, 423 QXL_GEM_DOMAIN_SURFACE, 424 size, 425 &surf, 426 &qobj, &handle); 427 if (ret) { 428 DRM_ERROR("%s: failed to create gem ret=%d\n", 429 __func__, ret); 430 return -ENOMEM; 431 } else 432 param->handle = handle; 433 return ret; 434} 435 436const struct drm_ioctl_desc qxl_ioctls[] = { 437 DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH|DRM_UNLOCKED), 438 439 DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH|DRM_UNLOCKED), 440 441 DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl, 442 DRM_AUTH|DRM_UNLOCKED), 443 DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl, 444 DRM_AUTH|DRM_UNLOCKED), 445 DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl, 446 DRM_AUTH|DRM_UNLOCKED), 447 DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl, 448 DRM_AUTH|DRM_UNLOCKED), 449 450 DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl, 451 DRM_AUTH|DRM_UNLOCKED), 452}; 453 454int qxl_max_ioctls = DRM_ARRAY_SIZE(qxl_ioctls); 455