qxl_ioctl.c revision 1.1.1.2
1 /* $NetBSD: qxl_ioctl.c,v 1.1.1.2 2018/08/27 01:34:56 riastradh Exp $ */ 2 3 /* 4 * Copyright 2013 Red Hat Inc. 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, sublicense, 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 shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Dave Airlie 25 * Alon Levy 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: qxl_ioctl.c,v 1.1.1.2 2018/08/27 01:34:56 riastradh Exp $"); 30 31 #include "qxl_drv.h" 32 #include "qxl_object.h" 33 34 /* 35 * TODO: allocating a new gem(in qxl_bo) for each request. 36 * This is wasteful since bo's are page aligned. 37 */ 38 static int qxl_alloc_ioctl(struct drm_device *dev, void *data, 39 struct drm_file *file_priv) 40 { 41 struct qxl_device *qdev = dev->dev_private; 42 struct drm_qxl_alloc *qxl_alloc = data; 43 int ret; 44 struct qxl_bo *qobj; 45 uint32_t handle; 46 u32 domain = QXL_GEM_DOMAIN_VRAM; 47 48 if (qxl_alloc->size == 0) { 49 DRM_ERROR("invalid size %d\n", qxl_alloc->size); 50 return -EINVAL; 51 } 52 ret = qxl_gem_object_create_with_handle(qdev, file_priv, 53 domain, 54 qxl_alloc->size, 55 NULL, 56 &qobj, &handle); 57 if (ret) { 58 DRM_ERROR("%s: failed to create gem ret=%d\n", 59 __func__, ret); 60 return -ENOMEM; 61 } 62 qxl_alloc->handle = handle; 63 return 0; 64 } 65 66 static int qxl_map_ioctl(struct drm_device *dev, void *data, 67 struct drm_file *file_priv) 68 { 69 struct qxl_device *qdev = dev->dev_private; 70 struct drm_qxl_map *qxl_map = data; 71 72 return qxl_mode_dumb_mmap(file_priv, qdev->ddev, qxl_map->handle, 73 &qxl_map->offset); 74 } 75 76 struct qxl_reloc_info { 77 int type; 78 struct qxl_bo *dst_bo; 79 uint32_t dst_offset; 80 struct qxl_bo *src_bo; 81 int src_offset; 82 }; 83 84 /* 85 * dst must be validated, i.e. whole bo on vram/surfacesram (right now all bo's 86 * are on vram). 87 * *(dst + dst_off) = qxl_bo_physical_address(src, src_off) 88 */ 89 static void 90 apply_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info) 91 { 92 void *reloc_page; 93 reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK); 94 *(uint64_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = qxl_bo_physical_address(qdev, 95 info->src_bo, 96 info->src_offset); 97 qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page); 98 } 99 100 static void 101 apply_surf_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info) 102 { 103 uint32_t id = 0; 104 void *reloc_page; 105 106 if (info->src_bo && !info->src_bo->is_primary) 107 id = info->src_bo->surface_id; 108 109 reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK); 110 *(uint32_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = id; 111 qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page); 112 } 113 114 /* return holding the reference to this object */ 115 static int qxlhw_handle_to_bo(struct qxl_device *qdev, 116 struct drm_file *file_priv, uint64_t handle, 117 struct qxl_release *release, struct qxl_bo **qbo_p) 118 { 119 struct drm_gem_object *gobj; 120 struct qxl_bo *qobj; 121 int ret; 122 123 gobj = drm_gem_object_lookup(qdev->ddev, file_priv, handle); 124 if (!gobj) 125 return -EINVAL; 126 127 qobj = gem_to_qxl_bo(gobj); 128 129 ret = qxl_release_list_add(release, qobj); 130 drm_gem_object_unreference_unlocked(gobj); 131 if (ret) 132 return ret; 133 134 *qbo_p = qobj; 135 return 0; 136 } 137 138 /* 139 * Usage of execbuffer: 140 * Relocations need to take into account the full QXLDrawable size. 141 * However, the command as passed from user space must *not* contain the initial 142 * QXLReleaseInfo struct (first XXX bytes) 143 */ 144 static int qxl_process_single_command(struct qxl_device *qdev, 145 struct drm_qxl_command *cmd, 146 struct drm_file *file_priv) 147 { 148 struct qxl_reloc_info *reloc_info; 149 int release_type; 150 struct qxl_release *release; 151 struct qxl_bo *cmd_bo; 152 void *fb_cmd; 153 int i, ret, num_relocs; 154 int unwritten; 155 156 switch (cmd->type) { 157 case QXL_CMD_DRAW: 158 release_type = QXL_RELEASE_DRAWABLE; 159 break; 160 case QXL_CMD_SURFACE: 161 case QXL_CMD_CURSOR: 162 default: 163 DRM_DEBUG("Only draw commands in execbuffers\n"); 164 return -EINVAL; 165 break; 166 } 167 168 if (cmd->command_size > PAGE_SIZE - sizeof(union qxl_release_info)) 169 return -EINVAL; 170 171 if (!access_ok(VERIFY_READ, 172 (void *)(unsigned long)cmd->command, 173 cmd->command_size)) 174 return -EFAULT; 175 176 reloc_info = kmalloc_array(cmd->relocs_num, 177 sizeof(struct qxl_reloc_info), GFP_KERNEL); 178 if (!reloc_info) 179 return -ENOMEM; 180 181 ret = qxl_alloc_release_reserved(qdev, 182 sizeof(union qxl_release_info) + 183 cmd->command_size, 184 release_type, 185 &release, 186 &cmd_bo); 187 if (ret) 188 goto out_free_reloc; 189 190 /* TODO copy slow path code from i915 */ 191 fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_SIZE)); 192 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); 193 194 { 195 struct qxl_drawable *draw = fb_cmd; 196 draw->mm_time = qdev->rom->mm_clock; 197 } 198 199 qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd); 200 if (unwritten) { 201 DRM_ERROR("got unwritten %d\n", unwritten); 202 ret = -EFAULT; 203 goto out_free_release; 204 } 205 206 /* fill out reloc info structs */ 207 num_relocs = 0; 208 for (i = 0; i < cmd->relocs_num; ++i) { 209 struct drm_qxl_reloc reloc; 210 211 if (copy_from_user(&reloc, 212 &((struct drm_qxl_reloc *)(uintptr_t)cmd->relocs)[i], 213 sizeof(reloc))) { 214 ret = -EFAULT; 215 goto out_free_bos; 216 } 217 218 /* add the bos to the list of bos to validate - 219 need to validate first then process relocs? */ 220 if (reloc.reloc_type != QXL_RELOC_TYPE_BO && reloc.reloc_type != QXL_RELOC_TYPE_SURF) { 221 DRM_DEBUG("unknown reloc type %d\n", reloc.reloc_type); 222 223 ret = -EINVAL; 224 goto out_free_bos; 225 } 226 reloc_info[i].type = reloc.reloc_type; 227 228 if (reloc.dst_handle) { 229 ret = qxlhw_handle_to_bo(qdev, file_priv, reloc.dst_handle, release, 230 &reloc_info[i].dst_bo); 231 if (ret) 232 goto out_free_bos; 233 reloc_info[i].dst_offset = reloc.dst_offset; 234 } else { 235 reloc_info[i].dst_bo = cmd_bo; 236 reloc_info[i].dst_offset = reloc.dst_offset + release->release_offset; 237 } 238 num_relocs++; 239 240 /* reserve and validate the reloc dst bo */ 241 if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle) { 242 ret = qxlhw_handle_to_bo(qdev, file_priv, reloc.src_handle, release, 243 &reloc_info[i].src_bo); 244 if (ret) 245 goto out_free_bos; 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); 270 271 out_free_bos: 272 out_free_release: 273 if (ret) 274 qxl_release_free(qdev, release); 275 out_free_reloc: 276 kfree(reloc_info); 277 return ret; 278 } 279 280 static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, 281 struct drm_file *file_priv) 282 { 283 struct qxl_device *qdev = dev->dev_private; 284 struct drm_qxl_execbuffer *execbuffer = data; 285 struct drm_qxl_command user_cmd; 286 int cmd_num; 287 int ret; 288 289 for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) { 290 291 struct drm_qxl_command *commands = 292 (struct drm_qxl_command *)(uintptr_t)execbuffer->commands; 293 294 if (copy_from_user(&user_cmd, &commands[cmd_num], 295 sizeof(user_cmd))) 296 return -EFAULT; 297 298 ret = qxl_process_single_command(qdev, &user_cmd, file_priv); 299 if (ret) 300 return ret; 301 } 302 return 0; 303 } 304 305 static int qxl_update_area_ioctl(struct drm_device *dev, void *data, 306 struct drm_file *file) 307 { 308 struct qxl_device *qdev = dev->dev_private; 309 struct drm_qxl_update_area *update_area = data; 310 struct qxl_rect area = {.left = update_area->left, 311 .top = update_area->top, 312 .right = update_area->right, 313 .bottom = update_area->bottom}; 314 int ret; 315 struct drm_gem_object *gobj = NULL; 316 struct qxl_bo *qobj = NULL; 317 318 if (update_area->left >= update_area->right || 319 update_area->top >= update_area->bottom) 320 return -EINVAL; 321 322 gobj = drm_gem_object_lookup(dev, file, update_area->handle); 323 if (gobj == NULL) 324 return -ENOENT; 325 326 qobj = gem_to_qxl_bo(gobj); 327 328 ret = qxl_bo_reserve(qobj, false); 329 if (ret) 330 goto out; 331 332 if (!qobj->pin_count) { 333 qxl_ttm_placement_from_domain(qobj, qobj->type, false); 334 ret = ttm_bo_validate(&qobj->tbo, &qobj->placement, 335 true, false); 336 if (unlikely(ret)) 337 goto out; 338 } 339 340 ret = qxl_bo_check_id(qdev, qobj); 341 if (ret) 342 goto out2; 343 if (!qobj->surface_id) 344 DRM_ERROR("got update area for surface with no id %d\n", update_area->handle); 345 ret = qxl_io_update_area(qdev, qobj, &area); 346 347 out2: 348 qxl_bo_unreserve(qobj); 349 350 out: 351 drm_gem_object_unreference_unlocked(gobj); 352 return ret; 353 } 354 355 static int qxl_getparam_ioctl(struct drm_device *dev, void *data, 356 struct drm_file *file_priv) 357 { 358 struct qxl_device *qdev = dev->dev_private; 359 struct drm_qxl_getparam *param = data; 360 361 switch (param->param) { 362 case QXL_PARAM_NUM_SURFACES: 363 param->value = qdev->rom->n_surfaces; 364 break; 365 case QXL_PARAM_MAX_RELOCS: 366 param->value = QXL_MAX_RES; 367 break; 368 default: 369 return -EINVAL; 370 } 371 return 0; 372 } 373 374 static int qxl_clientcap_ioctl(struct drm_device *dev, void *data, 375 struct drm_file *file_priv) 376 { 377 struct qxl_device *qdev = dev->dev_private; 378 struct drm_qxl_clientcap *param = data; 379 int byte, idx; 380 381 byte = param->index / 8; 382 idx = param->index % 8; 383 384 if (qdev->pdev->revision < 4) 385 return -ENOSYS; 386 387 if (byte >= 58) 388 return -ENOSYS; 389 390 if (qdev->rom->client_capabilities[byte] & (1 << idx)) 391 return 0; 392 return -ENOSYS; 393 } 394 395 static int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data, 396 struct drm_file *file) 397 { 398 struct qxl_device *qdev = dev->dev_private; 399 struct drm_qxl_alloc_surf *param = data; 400 struct qxl_bo *qobj; 401 int handle; 402 int ret; 403 int size, actual_stride; 404 struct qxl_surface surf; 405 406 /* work out size allocate bo with handle */ 407 actual_stride = param->stride < 0 ? -param->stride : param->stride; 408 size = actual_stride * param->height + actual_stride; 409 410 surf.format = param->format; 411 surf.width = param->width; 412 surf.height = param->height; 413 surf.stride = param->stride; 414 surf.data = 0; 415 416 ret = qxl_gem_object_create_with_handle(qdev, file, 417 QXL_GEM_DOMAIN_SURFACE, 418 size, 419 &surf, 420 &qobj, &handle); 421 if (ret) { 422 DRM_ERROR("%s: failed to create gem ret=%d\n", 423 __func__, ret); 424 return -ENOMEM; 425 } else 426 param->handle = handle; 427 return ret; 428 } 429 430 const struct drm_ioctl_desc qxl_ioctls[] = { 431 DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH), 432 433 DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH), 434 435 DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl, 436 DRM_AUTH), 437 DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl, 438 DRM_AUTH), 439 DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl, 440 DRM_AUTH), 441 DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl, 442 DRM_AUTH), 443 444 DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl, 445 DRM_AUTH), 446 }; 447 448 int qxl_max_ioctls = ARRAY_SIZE(qxl_ioctls); 449
Indexes created Sat Oct 11 19:10:01 GMT 2025