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 */ 33 static 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 61 static 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 71 struct 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 */ 84 static void 85 apply_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 95 static void 96 apply_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 */ 110 static int qxlhw_handle_to_bo(struct drm_file *file_priv, uint64_t handle, 111 struct qxl_release *release, struct qxl_bo **qbo_p) 112 { 113 struct drm_gem_object *gobj; 114 struct qxl_bo *qobj; 115 int ret; 116 117 gobj = drm_gem_object_lookup(file_priv, handle); 118 if (!gobj) 119 return -EINVAL; 120 121 qobj = gem_to_qxl_bo(gobj); 122 123 ret = qxl_release_list_add(release, qobj); 124 drm_gem_object_unreference_unlocked(gobj); 125 if (ret) 126 return ret; 127 128 *qbo_p = qobj; 129 return 0; 130 } 131 132 /* 133 * Usage of execbuffer: 134 * Relocations need to take into account the full QXLDrawable size. 135 * However, the command as passed from user space must *not* contain the initial 136 * QXLReleaseInfo struct (first XXX bytes) 137 */ 138 static int qxl_process_single_command(struct qxl_device *qdev, 139 struct drm_qxl_command *cmd, 140 struct drm_file *file_priv) 141 { 142 struct qxl_reloc_info *reloc_info; 143 int release_type; 144 struct qxl_release *release; 145 struct qxl_bo *cmd_bo; 146 void *fb_cmd; 147 int i, ret, num_relocs; 148 int unwritten; 149 150 switch (cmd->type) { 151 case QXL_CMD_DRAW: 152 release_type = QXL_RELEASE_DRAWABLE; 153 break; 154 case QXL_CMD_SURFACE: 155 case QXL_CMD_CURSOR: 156 default: 157 DRM_DEBUG("Only draw commands in execbuffers\n"); 158 return -EINVAL; 159 break; 160 } 161 162 if (cmd->command_size > PAGE_SIZE - sizeof(union qxl_release_info)) 163 return -EINVAL; 164 165 if (!access_ok(VERIFY_READ, 166 u64_to_user_ptr(cmd->command), 167 cmd->command_size)) 168 return -EFAULT; 169 170 reloc_info = kmalloc_array(cmd->relocs_num, 171 sizeof(struct qxl_reloc_info), GFP_KERNEL); 172 if (!reloc_info) 173 return -ENOMEM; 174 175 ret = qxl_alloc_release_reserved(qdev, 176 sizeof(union qxl_release_info) + 177 cmd->command_size, 178 release_type, 179 &release, 180 &cmd_bo); 181 if (ret) 182 goto out_free_reloc; 183 184 /* TODO copy slow path code from i915 */ 185 fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_SIZE)); 186 unwritten = __copy_from_user_inatomic_nocache 187 (fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_SIZE), 188 u64_to_user_ptr(cmd->command), cmd->command_size); 189 190 { 191 struct qxl_drawable *draw = fb_cmd; 192 draw->mm_time = qdev->rom->mm_clock; 193 } 194 195 qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd); 196 if (unwritten) { 197 DRM_ERROR("got unwritten %d\n", unwritten); 198 ret = -EFAULT; 199 goto out_free_release; 200 } 201 202 /* fill out reloc info structs */ 203 num_relocs = 0; 204 for (i = 0; i < cmd->relocs_num; ++i) { 205 struct drm_qxl_reloc reloc; 206 struct drm_qxl_reloc __user *u = u64_to_user_ptr(cmd->relocs); 207 208 if (copy_from_user(&reloc, u + i, sizeof(reloc))) { 209 ret = -EFAULT; 210 goto out_free_bos; 211 } 212 213 /* add the bos to the list of bos to validate - 214 need to validate first then process relocs? */ 215 if (reloc.reloc_type != QXL_RELOC_TYPE_BO && reloc.reloc_type != QXL_RELOC_TYPE_SURF) { 216 DRM_DEBUG("unknown reloc type %d\n", reloc.reloc_type); 217 218 ret = -EINVAL; 219 goto out_free_bos; 220 } 221 reloc_info[i].type = reloc.reloc_type; 222 223 if (reloc.dst_handle) { 224 ret = qxlhw_handle_to_bo(file_priv, reloc.dst_handle, release, 225 &reloc_info[i].dst_bo); 226 if (ret) 227 goto out_free_bos; 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) { 237 ret = qxlhw_handle_to_bo(file_priv, reloc.src_handle, release, 238 &reloc_info[i].src_bo); 239 if (ret) 240 goto out_free_bos; 241 reloc_info[i].src_offset = reloc.src_offset; 242 } else { 243 reloc_info[i].src_bo = NULL; 244 reloc_info[i].src_offset = 0; 245 } 246 } 247 248 /* validate all buffers */ 249 ret = qxl_release_reserve_list(release, false); 250 if (ret) 251 goto out_free_bos; 252 253 for (i = 0; i < cmd->relocs_num; ++i) { 254 if (reloc_info[i].type == QXL_RELOC_TYPE_BO) 255 apply_reloc(qdev, &reloc_info[i]); 256 else if (reloc_info[i].type == QXL_RELOC_TYPE_SURF) 257 apply_surf_reloc(qdev, &reloc_info[i]); 258 } 259 260 ret = qxl_push_command_ring_release(qdev, release, cmd->type, true); 261 if (ret) 262 qxl_release_backoff_reserve_list(release); 263 else 264 qxl_release_fence_buffer_objects(release); 265 266 out_free_bos: 267 out_free_release: 268 if (ret) 269 qxl_release_free(qdev, release); 270 out_free_reloc: 271 kfree(reloc_info); 272 return ret; 273 } 274 275 static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, 276 struct drm_file *file_priv) 277 { 278 struct qxl_device *qdev = dev->dev_private; 279 struct drm_qxl_execbuffer *execbuffer = data; 280 struct drm_qxl_command user_cmd; 281 int cmd_num; 282 int ret; 283 284 for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) { 285 286 struct drm_qxl_command __user *commands = 287 u64_to_user_ptr(execbuffer->commands); 288 289 if (copy_from_user(&user_cmd, commands + cmd_num, 290 sizeof(user_cmd))) 291 return -EFAULT; 292 293 ret = qxl_process_single_command(qdev, &user_cmd, file_priv); 294 if (ret) 295 return ret; 296 } 297 return 0; 298 } 299 300 static int qxl_update_area_ioctl(struct drm_device *dev, void *data, 301 struct drm_file *file) 302 { 303 struct qxl_device *qdev = dev->dev_private; 304 struct drm_qxl_update_area *update_area = data; 305 struct qxl_rect area = {.left = update_area->left, 306 .top = update_area->top, 307 .right = update_area->right, 308 .bottom = update_area->bottom}; 309 int ret; 310 struct drm_gem_object *gobj = NULL; 311 struct qxl_bo *qobj = NULL; 312 313 if (update_area->left >= update_area->right || 314 update_area->top >= update_area->bottom) 315 return -EINVAL; 316 317 gobj = drm_gem_object_lookup(file, update_area->handle); 318 if (gobj == NULL) 319 return -ENOENT; 320 321 qobj = gem_to_qxl_bo(gobj); 322 323 ret = qxl_bo_reserve(qobj, false); 324 if (ret) 325 goto out; 326 327 if (!qobj->pin_count) { 328 qxl_ttm_placement_from_domain(qobj, qobj->type, false); 329 ret = ttm_bo_validate(&qobj->tbo, &qobj->placement, 330 true, false); 331 if (unlikely(ret)) 332 goto out; 333 } 334 335 ret = qxl_bo_check_id(qdev, qobj); 336 if (ret) 337 goto out2; 338 if (!qobj->surface_id) 339 DRM_ERROR("got update area for surface with no id %d\n", update_area->handle); 340 ret = qxl_io_update_area(qdev, qobj, &area); 341 342 out2: 343 qxl_bo_unreserve(qobj); 344 345 out: 346 drm_gem_object_unreference_unlocked(gobj); 347 return ret; 348 } 349 350 static int qxl_getparam_ioctl(struct drm_device *dev, void *data, 351 struct drm_file *file_priv) 352 { 353 struct qxl_device *qdev = dev->dev_private; 354 struct drm_qxl_getparam *param = data; 355 356 switch (param->param) { 357 case QXL_PARAM_NUM_SURFACES: 358 param->value = qdev->rom->n_surfaces; 359 break; 360 case QXL_PARAM_MAX_RELOCS: 361 param->value = QXL_MAX_RES; 362 break; 363 default: 364 return -EINVAL; 365 } 366 return 0; 367 } 368 369 static int qxl_clientcap_ioctl(struct drm_device *dev, void *data, 370 struct drm_file *file_priv) 371 { 372 struct qxl_device *qdev = dev->dev_private; 373 struct drm_qxl_clientcap *param = data; 374 int byte, idx; 375 376 byte = param->index / 8; 377 idx = param->index % 8; 378 379 if (dev->pdev->revision < 4) 380 return -ENOSYS; 381 382 if (byte >= 58) 383 return -ENOSYS; 384 385 if (qdev->rom->client_capabilities[byte] & (1 << idx)) 386 return 0; 387 return -ENOSYS; 388 } 389 390 static int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data, 391 struct drm_file *file) 392 { 393 struct qxl_device *qdev = dev->dev_private; 394 struct drm_qxl_alloc_surf *param = data; 395 struct qxl_bo *qobj; 396 int handle; 397 int ret; 398 int size, actual_stride; 399 struct qxl_surface surf; 400 401 /* work out size allocate bo with handle */ 402 actual_stride = param->stride < 0 ? -param->stride : param->stride; 403 size = actual_stride * param->height + actual_stride; 404 405 surf.format = param->format; 406 surf.width = param->width; 407 surf.height = param->height; 408 surf.stride = param->stride; 409 surf.data = 0; 410 411 ret = qxl_gem_object_create_with_handle(qdev, file, 412 QXL_GEM_DOMAIN_SURFACE, 413 size, 414 &surf, 415 &qobj, &handle); 416 if (ret) { 417 DRM_ERROR("%s: failed to create gem ret=%d\n", 418 __func__, ret); 419 return -ENOMEM; 420 } else 421 param->handle = handle; 422 return ret; 423 } 424 425 const struct drm_ioctl_desc qxl_ioctls[] = { 426 DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH), 427 428 DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH), 429 430 DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl, 431 DRM_AUTH), 432 DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl, 433 DRM_AUTH), 434 DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl, 435 DRM_AUTH), 436 DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl, 437 DRM_AUTH), 438 439 DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl, 440 DRM_AUTH), 441 }; 442 443 int qxl_max_ioctls = ARRAY_SIZE(qxl_ioctls); 444