qxl_ioctl.c revision 970fa986fadb1165cf38b45b70e98302a3bee497
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 71/* 72 * dst must be validated, i.e. whole bo on vram/surfacesram (right now all bo's 73 * are on vram). 74 * *(dst + dst_off) = qxl_bo_physical_address(src, src_off) 75 */ 76static void 77apply_reloc(struct qxl_device *qdev, struct qxl_bo *dst, uint64_t dst_off, 78 struct qxl_bo *src, uint64_t src_off) 79{ 80 void *reloc_page; 81 82 reloc_page = qxl_bo_kmap_atomic_page(qdev, dst, dst_off & PAGE_MASK); 83 *(uint64_t *)(reloc_page + (dst_off & ~PAGE_MASK)) = qxl_bo_physical_address(qdev, 84 src, src_off); 85 qxl_bo_kunmap_atomic_page(qdev, dst, reloc_page); 86} 87 88static void 89apply_surf_reloc(struct qxl_device *qdev, struct qxl_bo *dst, uint64_t dst_off, 90 struct qxl_bo *src) 91{ 92 uint32_t id = 0; 93 void *reloc_page; 94 95 if (src && !src->is_primary) 96 id = src->surface_id; 97 98 reloc_page = qxl_bo_kmap_atomic_page(qdev, dst, dst_off & PAGE_MASK); 99 *(uint32_t *)(reloc_page + (dst_off & ~PAGE_MASK)) = id; 100 qxl_bo_kunmap_atomic_page(qdev, dst, reloc_page); 101} 102 103/* return holding the reference to this object */ 104static struct qxl_bo *qxlhw_handle_to_bo(struct qxl_device *qdev, 105 struct drm_file *file_priv, uint64_t handle, 106 struct qxl_reloc_list *reloc_list) 107{ 108 struct drm_gem_object *gobj; 109 struct qxl_bo *qobj; 110 int ret; 111 112 gobj = drm_gem_object_lookup(qdev->ddev, file_priv, handle); 113 if (!gobj) { 114 DRM_ERROR("bad bo handle %lld\n", handle); 115 return NULL; 116 } 117 qobj = gem_to_qxl_bo(gobj); 118 119 ret = qxl_bo_list_add(reloc_list, qobj); 120 if (ret) 121 return NULL; 122 123 return qobj; 124} 125 126/* 127 * Usage of execbuffer: 128 * Relocations need to take into account the full QXLDrawable size. 129 * However, the command as passed from user space must *not* contain the initial 130 * QXLReleaseInfo struct (first XXX bytes) 131 */ 132static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, 133 struct drm_file *file_priv) 134{ 135 struct qxl_device *qdev = dev->dev_private; 136 struct drm_qxl_execbuffer *execbuffer = data; 137 struct drm_qxl_command user_cmd; 138 int cmd_num; 139 struct qxl_bo *reloc_src_bo; 140 struct qxl_bo *reloc_dst_bo; 141 struct drm_qxl_reloc reloc; 142 void *fb_cmd; 143 int i, ret; 144 struct qxl_reloc_list reloc_list; 145 int unwritten; 146 uint32_t reloc_dst_offset; 147 INIT_LIST_HEAD(&reloc_list.bos); 148 149 for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) { 150 struct qxl_release *release; 151 struct qxl_bo *cmd_bo; 152 int release_type; 153 struct drm_qxl_command *commands = 154 (struct drm_qxl_command *)(uintptr_t)execbuffer->commands; 155 156 if (DRM_COPY_FROM_USER(&user_cmd, &commands[cmd_num], 157 sizeof(user_cmd))) 158 return -EFAULT; 159 switch (user_cmd.type) { 160 case QXL_CMD_DRAW: 161 release_type = QXL_RELEASE_DRAWABLE; 162 break; 163 case QXL_CMD_SURFACE: 164 case QXL_CMD_CURSOR: 165 default: 166 DRM_DEBUG("Only draw commands in execbuffers\n"); 167 return -EINVAL; 168 break; 169 } 170 171 if (user_cmd.command_size > PAGE_SIZE - sizeof(union qxl_release_info)) 172 return -EINVAL; 173 174 ret = qxl_alloc_release_reserved(qdev, 175 sizeof(union qxl_release_info) + 176 user_cmd.command_size, 177 release_type, 178 &release, 179 &cmd_bo); 180 if (ret) 181 return ret; 182 183 /* TODO copy slow path code from i915 */ 184 fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_SIZE)); 185 unwritten = __copy_from_user_inatomic_nocache(fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_SIZE), (void *)(unsigned long)user_cmd.command, user_cmd.command_size); 186 qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd); 187 if (unwritten) { 188 DRM_ERROR("got unwritten %d\n", unwritten); 189 qxl_release_unreserve(qdev, release); 190 qxl_release_free(qdev, release); 191 return -EFAULT; 192 } 193 194 for (i = 0 ; i < user_cmd.relocs_num; ++i) { 195 if (DRM_COPY_FROM_USER(&reloc, 196 &((struct drm_qxl_reloc *)(uintptr_t)user_cmd.relocs)[i], 197 sizeof(reloc))) { 198 qxl_bo_list_unreserve(&reloc_list, true); 199 qxl_release_unreserve(qdev, release); 200 qxl_release_free(qdev, release); 201 return -EFAULT; 202 } 203 204 /* add the bos to the list of bos to validate - 205 need to validate first then process relocs? */ 206 if (reloc.dst_handle) { 207 reloc_dst_bo = qxlhw_handle_to_bo(qdev, file_priv, 208 reloc.dst_handle, &reloc_list); 209 if (!reloc_dst_bo) { 210 qxl_bo_list_unreserve(&reloc_list, true); 211 qxl_release_unreserve(qdev, release); 212 qxl_release_free(qdev, release); 213 return -EINVAL; 214 } 215 reloc_dst_offset = 0; 216 } else { 217 reloc_dst_bo = cmd_bo; 218 reloc_dst_offset = release->release_offset; 219 } 220 221 /* reserve and validate the reloc dst bo */ 222 if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle > 0) { 223 reloc_src_bo = 224 qxlhw_handle_to_bo(qdev, file_priv, 225 reloc.src_handle, &reloc_list); 226 if (!reloc_src_bo) { 227 if (reloc_dst_bo != cmd_bo) 228 drm_gem_object_unreference_unlocked(&reloc_dst_bo->gem_base); 229 qxl_bo_list_unreserve(&reloc_list, true); 230 qxl_release_unreserve(qdev, release); 231 qxl_release_free(qdev, release); 232 return -EINVAL; 233 } 234 } else 235 reloc_src_bo = NULL; 236 if (reloc.reloc_type == QXL_RELOC_TYPE_BO) { 237 apply_reloc(qdev, reloc_dst_bo, reloc_dst_offset + reloc.dst_offset, 238 reloc_src_bo, reloc.src_offset); 239 } else if (reloc.reloc_type == QXL_RELOC_TYPE_SURF) { 240 apply_surf_reloc(qdev, reloc_dst_bo, reloc_dst_offset + reloc.dst_offset, reloc_src_bo); 241 } else { 242 DRM_ERROR("unknown reloc type %d\n", reloc.reloc_type); 243 return -EINVAL; 244 } 245 246 if (reloc_src_bo && reloc_src_bo != cmd_bo) { 247 qxl_release_add_res(qdev, release, reloc_src_bo); 248 drm_gem_object_unreference_unlocked(&reloc_src_bo->gem_base); 249 } 250 251 if (reloc_dst_bo != cmd_bo) 252 drm_gem_object_unreference_unlocked(&reloc_dst_bo->gem_base); 253 } 254 qxl_fence_releaseable(qdev, release); 255 256 ret = qxl_push_command_ring_release(qdev, release, user_cmd.type, true); 257 if (ret == -ERESTARTSYS) { 258 qxl_release_unreserve(qdev, release); 259 qxl_release_free(qdev, release); 260 qxl_bo_list_unreserve(&reloc_list, true); 261 return ret; 262 } 263 qxl_release_unreserve(qdev, release); 264 } 265 qxl_bo_list_unreserve(&reloc_list, 0); 266 return 0; 267} 268 269static int qxl_update_area_ioctl(struct drm_device *dev, void *data, 270 struct drm_file *file) 271{ 272 struct qxl_device *qdev = dev->dev_private; 273 struct drm_qxl_update_area *update_area = data; 274 struct qxl_rect area = {.left = update_area->left, 275 .top = update_area->top, 276 .right = update_area->right, 277 .bottom = update_area->bottom}; 278 int ret; 279 struct drm_gem_object *gobj = NULL; 280 struct qxl_bo *qobj = NULL; 281 282 if (update_area->left >= update_area->right || 283 update_area->top >= update_area->bottom) 284 return -EINVAL; 285 286 gobj = drm_gem_object_lookup(dev, file, update_area->handle); 287 if (gobj == NULL) 288 return -ENOENT; 289 290 qobj = gem_to_qxl_bo(gobj); 291 292 ret = qxl_bo_reserve(qobj, false); 293 if (ret) 294 goto out; 295 296 if (!qobj->pin_count) { 297 qxl_ttm_placement_from_domain(qobj, qobj->type); 298 ret = ttm_bo_validate(&qobj->tbo, &qobj->placement, 299 true, false); 300 if (unlikely(ret)) 301 goto out; 302 } 303 304 ret = qxl_bo_check_id(qdev, qobj); 305 if (ret) 306 goto out2; 307 if (!qobj->surface_id) 308 DRM_ERROR("got update area for surface with no id %d\n", update_area->handle); 309 ret = qxl_io_update_area(qdev, qobj, &area); 310 311out2: 312 qxl_bo_unreserve(qobj); 313 314out: 315 drm_gem_object_unreference_unlocked(gobj); 316 return ret; 317} 318 319static int qxl_getparam_ioctl(struct drm_device *dev, void *data, 320 struct drm_file *file_priv) 321{ 322 struct qxl_device *qdev = dev->dev_private; 323 struct drm_qxl_getparam *param = data; 324 325 switch (param->param) { 326 case QXL_PARAM_NUM_SURFACES: 327 param->value = qdev->rom->n_surfaces; 328 break; 329 case QXL_PARAM_MAX_RELOCS: 330 param->value = QXL_MAX_RES; 331 break; 332 default: 333 return -EINVAL; 334 } 335 return 0; 336} 337 338static int qxl_clientcap_ioctl(struct drm_device *dev, void *data, 339 struct drm_file *file_priv) 340{ 341 struct qxl_device *qdev = dev->dev_private; 342 struct drm_qxl_clientcap *param = data; 343 int byte, idx; 344 345 byte = param->index / 8; 346 idx = param->index % 8; 347 348 if (qdev->pdev->revision < 4) 349 return -ENOSYS; 350 351 if (byte >= 58) 352 return -ENOSYS; 353 354 if (qdev->rom->client_capabilities[byte] & (1 << idx)) 355 return 0; 356 return -ENOSYS; 357} 358 359static int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data, 360 struct drm_file *file) 361{ 362 struct qxl_device *qdev = dev->dev_private; 363 struct drm_qxl_alloc_surf *param = data; 364 struct qxl_bo *qobj; 365 int handle; 366 int ret; 367 int size, actual_stride; 368 struct qxl_surface surf; 369 370 /* work out size allocate bo with handle */ 371 actual_stride = param->stride < 0 ? -param->stride : param->stride; 372 size = actual_stride * param->height + actual_stride; 373 374 surf.format = param->format; 375 surf.width = param->width; 376 surf.height = param->height; 377 surf.stride = param->stride; 378 surf.data = 0; 379 380 ret = qxl_gem_object_create_with_handle(qdev, file, 381 QXL_GEM_DOMAIN_SURFACE, 382 size, 383 &surf, 384 &qobj, &handle); 385 if (ret) { 386 DRM_ERROR("%s: failed to create gem ret=%d\n", 387 __func__, ret); 388 return -ENOMEM; 389 } else 390 param->handle = handle; 391 return ret; 392} 393 394struct drm_ioctl_desc qxl_ioctls[] = { 395 DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH|DRM_UNLOCKED), 396 397 DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH|DRM_UNLOCKED), 398 399 DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl, 400 DRM_AUTH|DRM_UNLOCKED), 401 DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl, 402 DRM_AUTH|DRM_UNLOCKED), 403 DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl, 404 DRM_AUTH|DRM_UNLOCKED), 405 DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl, 406 DRM_AUTH|DRM_UNLOCKED), 407 408 DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl, 409 DRM_AUTH|DRM_UNLOCKED), 410}; 411 412int qxl_max_ioctls = DRM_ARRAY_SIZE(qxl_ioctls); 413