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 <linux/pci.h> 27 #include <linux/uaccess.h> 28 29 #include "qxl_drv.h" 30 #include "qxl_object.h" 31 32 /* 33 * TODO: allocating a new gem(in qxl_bo) for each request. 34 * This is wasteful since bo's are page aligned. 35 */ 36 int qxl_alloc_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) 37 { 38 struct qxl_device *qdev = to_qxl(dev); 39 struct drm_qxl_alloc *qxl_alloc = data; 40 int ret; 41 struct qxl_bo *qobj; 42 uint32_t handle; 43 u32 domain = QXL_GEM_DOMAIN_VRAM; 44 45 if (qxl_alloc->size == 0) { 46 DRM_ERROR("invalid size %d\n", qxl_alloc->size); 47 return -EINVAL; 48 } 49 ret = qxl_gem_object_create_with_handle(qdev, file_priv, 50 domain, 51 qxl_alloc->size, 52 NULL, 53 &qobj, &handle); 54 if (ret) { 55 DRM_ERROR("%s: failed to create gem ret=%d\n", 56 __func__, ret); 57 return -ENOMEM; 58 } 59 qxl_alloc->handle = handle; 60 return 0; 61 } 62 63 int qxl_map_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) 64 { 65 struct qxl_device *qdev = to_qxl(dev); 66 struct drm_qxl_map *qxl_map = data; 67 68 return drm_gem_ttm_dumb_map_offset(file_priv, &qdev->ddev, qxl_map->handle, 69 &qxl_map->offset); 70 } 71 72 struct qxl_reloc_info { 73 int type; 74 struct qxl_bo *dst_bo; 75 uint32_t dst_offset; 76 struct qxl_bo *src_bo; 77 int src_offset; 78 }; 79 80 /* 81 * dst must be validated, i.e. whole bo on vram/surfacesram (right now all bo's 82 * are on vram). 83 * *(dst + dst_off) = qxl_bo_physical_address(src, src_off) 84 */ 85 static void 86 apply_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info) 87 { 88 void *reloc_page; 89 90 reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK); 91 *(uint64_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = qxl_bo_physical_address(qdev, 92 info->src_bo, 93 info->src_offset); 94 qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page); 95 } 96 97 static void 98 apply_surf_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info) 99 { 100 uint32_t id = 0; 101 void *reloc_page; 102 103 if (info->src_bo && !info->src_bo->is_primary) 104 id = info->src_bo->surface_id; 105 106 reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK); 107 *(uint32_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = id; 108 qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page); 109 } 110 111 /* return holding the reference to this object */ 112 static int qxlhw_handle_to_bo(struct drm_file *file_priv, uint64_t handle, 113 struct qxl_release *release, struct qxl_bo **qbo_p) 114 { 115 struct drm_gem_object *gobj; 116 struct qxl_bo *qobj; 117 int ret; 118 119 gobj = drm_gem_object_lookup(file_priv, handle); 120 if (!gobj) 121 return -EINVAL; 122 123 qobj = gem_to_qxl_bo(gobj); 124 125 ret = qxl_release_list_add(release, qobj); 126 drm_gem_object_put(gobj); 127 if (ret) 128 return ret; 129 130 *qbo_p = qobj; 131 return 0; 132 } 133 134 /* 135 * Usage of execbuffer: 136 * Relocations need to take into account the full QXLDrawable size. 137 * However, the command as passed from user space must *not* contain the initial 138 * QXLReleaseInfo struct (first XXX bytes) 139 */ 140 static int qxl_process_single_command(struct qxl_device *qdev, 141 struct drm_qxl_command *cmd, 142 struct drm_file *file_priv) 143 { 144 struct qxl_reloc_info *reloc_info; 145 int release_type; 146 struct qxl_release *release; 147 struct qxl_bo *cmd_bo; 148 void *fb_cmd; 149 int i, ret, num_relocs; 150 int unwritten; 151 152 switch (cmd->type) { 153 case QXL_CMD_DRAW: 154 release_type = QXL_RELEASE_DRAWABLE; 155 break; 156 case QXL_CMD_SURFACE: 157 case QXL_CMD_CURSOR: 158 default: 159 DRM_DEBUG("Only draw commands in execbuffers\n"); 160 return -EINVAL; 161 } 162 163 if (cmd->command_size > PAGE_SIZE - sizeof(union qxl_release_info)) 164 return -EINVAL; 165 166 if (!access_ok(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_MASK)); 186 unwritten = __copy_from_user_inatomic_nocache 187 (fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_MASK), 188 u64_to_user_ptr(cmd->command), cmd->command_size); 189 190 { 191 struct qxl_drawable *draw = fb_cmd; 192 193 draw->mm_time = qdev->rom->mm_clock; 194 } 195 196 qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd); 197 if (unwritten) { 198 DRM_ERROR("got unwritten %d\n", unwritten); 199 ret = -EFAULT; 200 goto out_free_release; 201 } 202 203 /* fill out reloc info structs */ 204 num_relocs = 0; 205 for (i = 0; i < cmd->relocs_num; ++i) { 206 struct drm_qxl_reloc reloc; 207 struct drm_qxl_reloc __user *u = u64_to_user_ptr(cmd->relocs); 208 209 if (copy_from_user(&reloc, u + i, sizeof(reloc))) { 210 ret = -EFAULT; 211 goto out_free_bos; 212 } 213 214 /* add the bos to the list of bos to validate - 215 need to validate first then process relocs? */ 216 if (reloc.reloc_type != QXL_RELOC_TYPE_BO && reloc.reloc_type != QXL_RELOC_TYPE_SURF) { 217 DRM_DEBUG("unknown reloc type %d\n", reloc.reloc_type); 218 219 ret = -EINVAL; 220 goto out_free_bos; 221 } 222 reloc_info[i].type = reloc.reloc_type; 223 224 if (reloc.dst_handle) { 225 ret = qxlhw_handle_to_bo(file_priv, reloc.dst_handle, release, 226 &reloc_info[i].dst_bo); 227 if (ret) 228 goto out_free_bos; 229 reloc_info[i].dst_offset = reloc.dst_offset; 230 } else { 231 reloc_info[i].dst_bo = cmd_bo; 232 reloc_info[i].dst_offset = reloc.dst_offset + release->release_offset; 233 } 234 num_relocs++; 235 236 /* reserve and validate the reloc dst bo */ 237 if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle) { 238 ret = qxlhw_handle_to_bo(file_priv, reloc.src_handle, release, 239 &reloc_info[i].src_bo); 240 if (ret) 241 goto out_free_bos; 242 reloc_info[i].src_offset = reloc.src_offset; 243 } else { 244 reloc_info[i].src_bo = NULL; 245 reloc_info[i].src_offset = 0; 246 } 247 } 248 249 /* validate all buffers */ 250 ret = qxl_release_reserve_list(release, false); 251 if (ret) 252 goto out_free_bos; 253 254 for (i = 0; i < cmd->relocs_num; ++i) { 255 if (reloc_info[i].type == QXL_RELOC_TYPE_BO) 256 apply_reloc(qdev, &reloc_info[i]); 257 else if (reloc_info[i].type == QXL_RELOC_TYPE_SURF) 258 apply_surf_reloc(qdev, &reloc_info[i]); 259 } 260 261 qxl_release_fence_buffer_objects(release); 262 ret = qxl_push_command_ring_release(qdev, release, cmd->type, true); 263 264 out_free_bos: 265 out_free_release: 266 if (ret) 267 qxl_release_free(qdev, release); 268 out_free_reloc: 269 kfree(reloc_info); 270 return ret; 271 } 272 273 int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) 274 { 275 struct qxl_device *qdev = to_qxl(dev); 276 struct drm_qxl_execbuffer *execbuffer = data; 277 struct drm_qxl_command user_cmd; 278 int cmd_num; 279 int ret; 280 281 for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) { 282 283 struct drm_qxl_command __user *commands = 284 u64_to_user_ptr(execbuffer->commands); 285 286 if (copy_from_user(&user_cmd, commands + cmd_num, 287 sizeof(user_cmd))) 288 return -EFAULT; 289 290 ret = qxl_process_single_command(qdev, &user_cmd, file_priv); 291 if (ret) 292 return ret; 293 } 294 return 0; 295 } 296 297 int qxl_update_area_ioctl(struct drm_device *dev, void *data, struct drm_file *file) 298 { 299 struct qxl_device *qdev = to_qxl(dev); 300 struct drm_qxl_update_area *update_area = data; 301 struct qxl_rect area = {.left = update_area->left, 302 .top = update_area->top, 303 .right = update_area->right, 304 .bottom = update_area->bottom}; 305 int ret; 306 struct drm_gem_object *gobj = NULL; 307 struct qxl_bo *qobj = NULL; 308 struct ttm_operation_ctx ctx = { true, false }; 309 310 if (update_area->left >= update_area->right || 311 update_area->top >= update_area->bottom) 312 return -EINVAL; 313 314 gobj = drm_gem_object_lookup(file, update_area->handle); 315 if (gobj == NULL) 316 return -ENOENT; 317 318 qobj = gem_to_qxl_bo(gobj); 319 320 ret = qxl_bo_reserve(qobj); 321 if (ret) 322 goto out; 323 324 if (!qobj->tbo.pin_count) { 325 qxl_ttm_placement_from_domain(qobj, qobj->type); 326 ret = ttm_bo_validate(&qobj->tbo, &qobj->placement, &ctx); 327 if (unlikely(ret)) 328 goto out; 329 } 330 331 ret = qxl_bo_check_id(qdev, qobj); 332 if (ret) 333 goto out2; 334 if (!qobj->surface_id) 335 DRM_ERROR("got update area for surface with no id %d\n", update_area->handle); 336 ret = qxl_io_update_area(qdev, qobj, &area); 337 338 out2: 339 qxl_bo_unreserve(qobj); 340 341 out: 342 drm_gem_object_put(gobj); 343 return ret; 344 } 345 346 int qxl_getparam_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) 347 { 348 struct qxl_device *qdev = to_qxl(dev); 349 struct drm_qxl_getparam *param = data; 350 351 switch (param->param) { 352 case QXL_PARAM_NUM_SURFACES: 353 param->value = qdev->rom->n_surfaces; 354 break; 355 case QXL_PARAM_MAX_RELOCS: 356 param->value = QXL_MAX_RES; 357 break; 358 default: 359 return -EINVAL; 360 } 361 return 0; 362 } 363 364 int qxl_clientcap_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) 365 { 366 struct qxl_device *qdev = to_qxl(dev); 367 struct pci_dev *pdev = to_pci_dev(dev->dev); 368 struct drm_qxl_clientcap *param = data; 369 int byte, idx; 370 371 byte = param->index / 8; 372 idx = param->index % 8; 373 374 if (pdev->revision < 4) 375 return -ENOSYS; 376 377 if (byte >= 58) 378 return -ENOSYS; 379 380 if (qdev->rom->client_capabilities[byte] & (1 << idx)) 381 return 0; 382 return -ENOSYS; 383 } 384 385 int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data, struct drm_file *file) 386 { 387 struct qxl_device *qdev = to_qxl(dev); 388 struct drm_qxl_alloc_surf *param = data; 389 struct qxl_bo *qobj; 390 int handle; 391 int ret; 392 int size, actual_stride; 393 struct qxl_surface surf; 394 395 /* work out size allocate bo with handle */ 396 actual_stride = param->stride < 0 ? -param->stride : param->stride; 397 size = actual_stride * param->height + actual_stride; 398 399 surf.format = param->format; 400 surf.width = param->width; 401 surf.height = param->height; 402 surf.stride = param->stride; 403 surf.data = 0; 404 405 ret = qxl_gem_object_create_with_handle(qdev, file, 406 QXL_GEM_DOMAIN_SURFACE, 407 size, 408 &surf, 409 &qobj, &handle); 410 if (ret) { 411 DRM_ERROR("%s: failed to create gem ret=%d\n", 412 __func__, ret); 413 return -ENOMEM; 414 } else 415 param->handle = handle; 416 return ret; 417 } 418