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 <drm/drm_print.h> 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 int qxl_alloc_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) 39 { 40 struct qxl_device *qdev = to_qxl(dev); 41 struct drm_qxl_alloc *qxl_alloc = data; 42 int ret; 43 uint32_t handle; 44 u32 domain = QXL_GEM_DOMAIN_VRAM; 45 46 if (qxl_alloc->size == 0) { 47 DRM_ERROR("invalid size %d\n", qxl_alloc->size); 48 return -EINVAL; 49 } 50 ret = qxl_gem_object_create_with_handle(qdev, file_priv, 51 domain, 52 qxl_alloc->size, 53 NULL, 54 NULL, &handle); 55 if (ret) { 56 DRM_ERROR("%s: failed to create gem ret=%d\n", 57 __func__, ret); 58 return -ENOMEM; 59 } 60 qxl_alloc->handle = handle; 61 return 0; 62 } 63 64 int qxl_map_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) 65 { 66 struct qxl_device *qdev = to_qxl(dev); 67 struct drm_qxl_map *qxl_map = data; 68 69 return drm_gem_ttm_dumb_map_offset(file_priv, &qdev->ddev, qxl_map->handle, 70 &qxl_map->offset); 71 } 72 73 struct qxl_reloc_info { 74 int type; 75 struct qxl_bo *dst_bo; 76 uint32_t dst_offset; 77 struct qxl_bo *src_bo; 78 int src_offset; 79 }; 80 81 /* 82 * dst must be validated, i.e. whole bo on vram/surfacesram (right now all bo's 83 * are on vram). 84 * *(dst + dst_off) = qxl_bo_physical_address(src, src_off) 85 */ 86 static void 87 apply_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info) 88 { 89 void *reloc_page; 90 91 reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK); 92 *(uint64_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = qxl_bo_physical_address(qdev, 93 info->src_bo, 94 info->src_offset); 95 qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page); 96 } 97 98 static void 99 apply_surf_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info) 100 { 101 uint32_t id = 0; 102 void *reloc_page; 103 104 if (info->src_bo && !info->src_bo->is_primary) 105 id = info->src_bo->surface_id; 106 107 reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK); 108 *(uint32_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = id; 109 qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page); 110 } 111 112 /* return holding the reference to this object */ 113 static int qxlhw_handle_to_bo(struct drm_file *file_priv, uint64_t handle, 114 struct qxl_release *release, struct qxl_bo **qbo_p) 115 { 116 struct drm_gem_object *gobj; 117 struct qxl_bo *qobj; 118 int ret; 119 120 gobj = drm_gem_object_lookup(file_priv, handle); 121 if (!gobj) 122 return -EINVAL; 123 124 qobj = gem_to_qxl_bo(gobj); 125 126 ret = qxl_release_list_add(release, qobj); 127 drm_gem_object_put(gobj); 128 if (ret) 129 return ret; 130 131 *qbo_p = qobj; 132 return 0; 133 } 134 135 /* 136 * Usage of execbuffer: 137 * Relocations need to take into account the full QXLDrawable size. 138 * However, the command as passed from user space must *not* contain the initial 139 * QXLReleaseInfo struct (first XXX bytes) 140 */ 141 static int qxl_process_single_command(struct qxl_device *qdev, 142 struct drm_qxl_command *cmd, 143 struct drm_file *file_priv) 144 { 145 struct qxl_reloc_info *reloc_info; 146 int release_type; 147 struct qxl_release *release; 148 struct qxl_bo *cmd_bo; 149 void *fb_cmd; 150 int i, ret; 151 int unwritten; 152 153 switch (cmd->type) { 154 case QXL_CMD_DRAW: 155 release_type = QXL_RELEASE_DRAWABLE; 156 break; 157 case QXL_CMD_SURFACE: 158 case QXL_CMD_CURSOR: 159 default: 160 DRM_DEBUG("Only draw commands in execbuffers\n"); 161 return -EINVAL; 162 } 163 164 if (cmd->command_size > PAGE_SIZE - sizeof(union qxl_release_info)) 165 return -EINVAL; 166 167 if (!access_ok(u64_to_user_ptr(cmd->command), 168 cmd->command_size)) 169 return -EFAULT; 170 171 reloc_info = kmalloc_objs(struct qxl_reloc_info, cmd->relocs_num); 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_nontemporal 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 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 } 233 234 /* reserve and validate the reloc dst bo */ 235 if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle) { 236 ret = qxlhw_handle_to_bo(file_priv, reloc.src_handle, release, 237 &reloc_info[i].src_bo); 238 if (ret) 239 goto out_free_bos; 240 reloc_info[i].src_offset = reloc.src_offset; 241 } else { 242 reloc_info[i].src_bo = NULL; 243 reloc_info[i].src_offset = 0; 244 } 245 } 246 247 /* validate all buffers */ 248 ret = qxl_release_reserve_list(release, false); 249 if (ret) 250 goto out_free_bos; 251 252 for (i = 0; i < cmd->relocs_num; ++i) { 253 if (reloc_info[i].type == QXL_RELOC_TYPE_BO) 254 apply_reloc(qdev, &reloc_info[i]); 255 else if (reloc_info[i].type == QXL_RELOC_TYPE_SURF) 256 apply_surf_reloc(qdev, &reloc_info[i]); 257 } 258 259 qxl_release_fence_buffer_objects(release); 260 ret = qxl_push_command_ring_release(qdev, release, cmd->type, true); 261 262 out_free_bos: 263 out_free_release: 264 if (ret) 265 qxl_release_free(qdev, release); 266 out_free_reloc: 267 kfree(reloc_info); 268 return ret; 269 } 270 271 int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) 272 { 273 struct qxl_device *qdev = to_qxl(dev); 274 struct drm_qxl_execbuffer *execbuffer = data; 275 struct drm_qxl_command user_cmd; 276 int cmd_num; 277 int ret; 278 279 for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) { 280 281 struct drm_qxl_command __user *commands = 282 u64_to_user_ptr(execbuffer->commands); 283 284 if (copy_from_user(&user_cmd, commands + cmd_num, 285 sizeof(user_cmd))) 286 return -EFAULT; 287 288 ret = qxl_process_single_command(qdev, &user_cmd, file_priv); 289 if (ret) 290 return ret; 291 } 292 return 0; 293 } 294 295 int qxl_update_area_ioctl(struct drm_device *dev, void *data, struct drm_file *file) 296 { 297 struct qxl_device *qdev = to_qxl(dev); 298 struct drm_qxl_update_area *update_area = data; 299 struct qxl_rect area = {.left = update_area->left, 300 .top = update_area->top, 301 .right = update_area->right, 302 .bottom = update_area->bottom}; 303 int ret; 304 struct drm_gem_object *gobj = NULL; 305 struct qxl_bo *qobj = NULL; 306 struct ttm_operation_ctx ctx = { true, false }; 307 308 if (update_area->left >= update_area->right || 309 update_area->top >= update_area->bottom) 310 return -EINVAL; 311 312 gobj = drm_gem_object_lookup(file, update_area->handle); 313 if (gobj == NULL) 314 return -ENOENT; 315 316 qobj = gem_to_qxl_bo(gobj); 317 318 ret = qxl_bo_reserve(qobj); 319 if (ret) 320 goto out; 321 322 if (!qobj->tbo.pin_count) { 323 qxl_ttm_placement_from_domain(qobj, qobj->type); 324 ret = ttm_bo_validate(&qobj->tbo, &qobj->placement, &ctx); 325 if (unlikely(ret)) 326 goto out; 327 } 328 329 ret = qxl_bo_check_id(qdev, qobj); 330 if (ret) 331 goto out2; 332 if (!qobj->surface_id) 333 DRM_ERROR("got update area for surface with no id %d\n", update_area->handle); 334 ret = qxl_io_update_area(qdev, qobj, &area); 335 336 out2: 337 qxl_bo_unreserve(qobj); 338 339 out: 340 drm_gem_object_put(gobj); 341 return ret; 342 } 343 344 int qxl_getparam_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) 345 { 346 struct qxl_device *qdev = to_qxl(dev); 347 struct drm_qxl_getparam *param = data; 348 349 switch (param->param) { 350 case QXL_PARAM_NUM_SURFACES: 351 param->value = qdev->rom->n_surfaces; 352 break; 353 case QXL_PARAM_MAX_RELOCS: 354 param->value = QXL_MAX_RES; 355 break; 356 default: 357 return -EINVAL; 358 } 359 return 0; 360 } 361 362 int qxl_clientcap_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) 363 { 364 struct qxl_device *qdev = to_qxl(dev); 365 struct pci_dev *pdev = to_pci_dev(dev->dev); 366 struct drm_qxl_clientcap *param = data; 367 int byte, idx; 368 369 byte = param->index / 8; 370 idx = param->index % 8; 371 372 if (pdev->revision < 4) 373 return -ENOSYS; 374 375 if (byte >= 58) 376 return -ENOSYS; 377 378 if (qdev->rom->client_capabilities[byte] & (1 << idx)) 379 return 0; 380 return -ENOSYS; 381 } 382 383 int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data, struct drm_file *file) 384 { 385 struct qxl_device *qdev = to_qxl(dev); 386 struct drm_qxl_alloc_surf *param = data; 387 int handle; 388 int ret; 389 int size, actual_stride; 390 struct qxl_surface surf; 391 392 /* work out size allocate bo with handle */ 393 actual_stride = param->stride < 0 ? -param->stride : param->stride; 394 size = actual_stride * param->height + actual_stride; 395 396 surf.format = param->format; 397 surf.width = param->width; 398 surf.height = param->height; 399 surf.stride = param->stride; 400 surf.data = 0; 401 402 ret = qxl_gem_object_create_with_handle(qdev, file, 403 QXL_GEM_DOMAIN_SURFACE, 404 size, 405 &surf, 406 NULL, &handle); 407 if (ret) { 408 DRM_ERROR("%s: failed to create gem ret=%d\n", 409 __func__, ret); 410 return -ENOMEM; 411 } else 412 param->handle = handle; 413 return ret; 414 } 415