| 1 | /* |
| 2 | * Created: Sun Dec 21 13:08:50 2008 by bgamari@gmail.com |
| 3 | * |
| 4 | * Copyright 2008 Ben Gamari <bgamari@gmail.com> |
| 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 (including the next |
| 14 | * paragraph) shall be included in all copies or substantial portions of the |
| 15 | * Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 21 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 22 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 23 | * OTHER DEALINGS IN THE SOFTWARE. |
| 24 | */ |
| 25 | |
| 26 | #include <linux/debugfs.h> |
| 27 | #include <linux/export.h> |
| 28 | #include <linux/seq_file.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/uaccess.h> |
| 31 | |
| 32 | #include <drm/drm_atomic.h> |
| 33 | #include <drm/drm_auth.h> |
| 34 | #include <drm/drm_bridge.h> |
| 35 | #include <drm/drm_client.h> |
| 36 | #include <drm/drm_debugfs.h> |
| 37 | #include <drm/drm_device.h> |
| 38 | #include <drm/drm_drv.h> |
| 39 | #include <drm/drm_edid.h> |
| 40 | #include <drm/drm_file.h> |
| 41 | #include <drm/drm_gem.h> |
| 42 | #include <drm/drm_managed.h> |
| 43 | #include <drm/drm_gpuvm.h> |
| 44 | |
| 45 | #include "drm_crtc_internal.h" |
| 46 | #include "drm_internal.h" |
| 47 | |
| 48 | /*************************************************** |
| 49 | * Initialization, etc. |
| 50 | **************************************************/ |
| 51 | |
| 52 | static int drm_name_info(struct seq_file *m, void *data) |
| 53 | { |
| 54 | struct drm_debugfs_entry *entry = m->private; |
| 55 | struct drm_device *dev = entry->dev; |
| 56 | struct drm_master *master; |
| 57 | |
| 58 | mutex_lock(&dev->master_mutex); |
| 59 | master = dev->master; |
| 60 | seq_printf(m, "%s", dev->driver->name); |
| 61 | if (dev->dev) |
| 62 | seq_printf(m, " dev=%s", dev_name(dev->dev)); |
| 63 | if (master && master->unique) |
| 64 | seq_printf(m, " master=%s", master->unique); |
| 65 | if (dev->unique) |
| 66 | seq_printf(m, " unique=%s", dev->unique); |
| 67 | seq_printf(m, "\n"); |
| 68 | mutex_unlock(&dev->master_mutex); |
| 69 | |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | static int drm_clients_info(struct seq_file *m, void *data) |
| 74 | { |
| 75 | struct drm_debugfs_entry *entry = m->private; |
| 76 | struct drm_device *dev = entry->dev; |
| 77 | struct drm_file *priv; |
| 78 | kuid_t uid; |
| 79 | |
| 80 | seq_printf(m, |
| 81 | "%20s %5s %3s master a %5s %10s\n", |
| 82 | "command", |
| 83 | "tgid", |
| 84 | "dev", |
| 85 | "uid", |
| 86 | "magic"); |
| 87 | |
| 88 | /* dev->filelist is sorted youngest first, but we want to present |
| 89 | * oldest first (i.e. kernel, servers, clients), so walk backwardss. |
| 90 | */ |
| 91 | mutex_lock(&dev->filelist_mutex); |
| 92 | list_for_each_entry_reverse(priv, &dev->filelist, lhead) { |
| 93 | bool is_current_master = drm_is_current_master(priv); |
| 94 | struct task_struct *task; |
| 95 | struct pid *pid; |
| 96 | |
| 97 | rcu_read_lock(); /* Locks priv->pid and pid_task()->comm! */ |
| 98 | pid = rcu_dereference(priv->pid); |
| 99 | task = pid_task(pid, PIDTYPE_TGID); |
| 100 | uid = task ? __task_cred(task)->euid : GLOBAL_ROOT_UID; |
| 101 | seq_printf(m, "%20s %5d %3d %c %c %5d %10u\n", |
| 102 | task ? task->comm : "<unknown>", |
| 103 | pid_vnr(pid), |
| 104 | priv->minor->index, |
| 105 | is_current_master ? 'y' : 'n', |
| 106 | priv->authenticated ? 'y' : 'n', |
| 107 | from_kuid_munged(seq_user_ns(m), uid), |
| 108 | priv->magic); |
| 109 | rcu_read_unlock(); |
| 110 | } |
| 111 | mutex_unlock(&dev->filelist_mutex); |
| 112 | return 0; |
| 113 | } |
| 114 | |
| 115 | static int drm_gem_one_name_info(int id, void *ptr, void *data) |
| 116 | { |
| 117 | struct drm_gem_object *obj = ptr; |
| 118 | struct seq_file *m = data; |
| 119 | |
| 120 | seq_printf(m, "%6d %8zd %7d %8d\n", |
| 121 | obj->name, obj->size, |
| 122 | obj->handle_count, |
| 123 | kref_read(&obj->refcount)); |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | static int drm_gem_name_info(struct seq_file *m, void *data) |
| 128 | { |
| 129 | struct drm_debugfs_entry *entry = m->private; |
| 130 | struct drm_device *dev = entry->dev; |
| 131 | |
| 132 | seq_printf(m, " name size handles refcount\n"); |
| 133 | |
| 134 | mutex_lock(&dev->object_name_lock); |
| 135 | idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m); |
| 136 | mutex_unlock(&dev->object_name_lock); |
| 137 | |
| 138 | return 0; |
| 139 | } |
| 140 | |
| 141 | static const struct drm_debugfs_info drm_debugfs_list[] = { |
| 142 | {"name", drm_name_info, 0}, |
| 143 | {"clients", drm_clients_info, 0}, |
| 144 | {"gem_names", drm_gem_name_info, DRIVER_GEM}, |
| 145 | }; |
| 146 | #define DRM_DEBUGFS_ENTRIES ARRAY_SIZE(drm_debugfs_list) |
| 147 | |
| 148 | |
| 149 | static int drm_debugfs_open(struct inode *inode, struct file *file) |
| 150 | { |
| 151 | struct drm_info_node *node = inode->i_private; |
| 152 | |
| 153 | if (!device_is_registered(node->minor->kdev)) |
| 154 | return -ENODEV; |
| 155 | |
| 156 | return single_open(file, node->info_ent->show, node); |
| 157 | } |
| 158 | |
| 159 | static int drm_debugfs_entry_open(struct inode *inode, struct file *file) |
| 160 | { |
| 161 | struct drm_debugfs_entry *entry = inode->i_private; |
| 162 | struct drm_debugfs_info *node = &entry->file; |
| 163 | struct drm_minor *minor = entry->dev->primary ?: entry->dev->accel; |
| 164 | |
| 165 | if (!device_is_registered(minor->kdev)) |
| 166 | return -ENODEV; |
| 167 | |
| 168 | return single_open(file, node->show, entry); |
| 169 | } |
| 170 | |
| 171 | static const struct file_operations drm_debugfs_entry_fops = { |
| 172 | .owner = THIS_MODULE, |
| 173 | .open = drm_debugfs_entry_open, |
| 174 | .read = seq_read, |
| 175 | .llseek = seq_lseek, |
| 176 | .release = single_release, |
| 177 | }; |
| 178 | |
| 179 | static const struct file_operations drm_debugfs_fops = { |
| 180 | .owner = THIS_MODULE, |
| 181 | .open = drm_debugfs_open, |
| 182 | .read = seq_read, |
| 183 | .llseek = seq_lseek, |
| 184 | .release = single_release, |
| 185 | }; |
| 186 | |
| 187 | /** |
| 188 | * drm_debugfs_gpuva_info - dump the given DRM GPU VA space |
| 189 | * @m: pointer to the &seq_file to write |
| 190 | * @gpuvm: the &drm_gpuvm representing the GPU VA space |
| 191 | * |
| 192 | * Dumps the GPU VA mappings of a given DRM GPU VA manager. |
| 193 | * |
| 194 | * For each DRM GPU VA space drivers should call this function from their |
| 195 | * &drm_info_list's show callback. |
| 196 | * |
| 197 | * Returns: 0 on success, -ENODEV if the &gpuvm is not initialized |
| 198 | */ |
| 199 | int drm_debugfs_gpuva_info(struct seq_file *m, |
| 200 | struct drm_gpuvm *gpuvm) |
| 201 | { |
| 202 | struct drm_gpuva *va, *kva = &gpuvm->kernel_alloc_node; |
| 203 | |
| 204 | if (!gpuvm->name) |
| 205 | return -ENODEV; |
| 206 | |
| 207 | seq_printf(m, "DRM GPU VA space (%s) [0x%016llx;0x%016llx]\n", |
| 208 | gpuvm->name, gpuvm->mm_start, gpuvm->mm_start + gpuvm->mm_range); |
| 209 | seq_printf(m, "Kernel reserved node [0x%016llx;0x%016llx]\n", |
| 210 | kva->va.addr, kva->va.addr + kva->va.range); |
| 211 | seq_puts(m, "\n"); |
| 212 | seq_puts(m, " VAs | start | range | end | object | object offset\n"); |
| 213 | seq_puts(m, "-------------------------------------------------------------------------------------------------------------\n"); |
| 214 | drm_gpuvm_for_each_va(va, gpuvm) { |
| 215 | if (unlikely(va == kva)) |
| 216 | continue; |
| 217 | |
| 218 | seq_printf(m, " | 0x%016llx | 0x%016llx | 0x%016llx | 0x%016llx | 0x%016llx\n", |
| 219 | va->va.addr, va->va.range, va->va.addr + va->va.range, |
| 220 | (u64)(uintptr_t)va->gem.obj, va->gem.offset); |
| 221 | } |
| 222 | |
| 223 | return 0; |
| 224 | } |
| 225 | EXPORT_SYMBOL(drm_debugfs_gpuva_info); |
| 226 | |
| 227 | /** |
| 228 | * drm_debugfs_create_files - Initialize a given set of debugfs files for DRM |
| 229 | * minor |
| 230 | * @files: The array of files to create |
| 231 | * @count: The number of files given |
| 232 | * @root: DRI debugfs dir entry. |
| 233 | * @minor: device minor number |
| 234 | * |
| 235 | * Create a given set of debugfs files represented by an array of |
| 236 | * &struct drm_info_list in the given root directory. These files will be removed |
| 237 | * automatically on drm_debugfs_dev_fini(). |
| 238 | */ |
| 239 | void drm_debugfs_create_files(const struct drm_info_list *files, int count, |
| 240 | struct dentry *root, struct drm_minor *minor) |
| 241 | { |
| 242 | struct drm_device *dev = minor->dev; |
| 243 | struct drm_info_node *tmp; |
| 244 | int i; |
| 245 | |
| 246 | for (i = 0; i < count; i++) { |
| 247 | u32 features = files[i].driver_features; |
| 248 | |
| 249 | if (features && !drm_core_check_all_features(dev, features)) |
| 250 | continue; |
| 251 | |
| 252 | tmp = drmm_kzalloc(dev, sizeof(*tmp), GFP_KERNEL); |
| 253 | if (tmp == NULL) |
| 254 | continue; |
| 255 | |
| 256 | tmp->minor = minor; |
| 257 | tmp->dent = debugfs_create_file(files[i].name, |
| 258 | 0444, root, tmp, |
| 259 | &drm_debugfs_fops); |
| 260 | tmp->info_ent = &files[i]; |
| 261 | } |
| 262 | } |
| 263 | EXPORT_SYMBOL(drm_debugfs_create_files); |
| 264 | |
| 265 | int drm_debugfs_remove_files(const struct drm_info_list *files, int count, |
| 266 | struct dentry *root, struct drm_minor *minor) |
| 267 | { |
| 268 | int i; |
| 269 | |
| 270 | for (i = 0; i < count; i++) { |
| 271 | struct dentry *dent = debugfs_lookup(files[i].name, root); |
| 272 | |
| 273 | if (!dent) |
| 274 | continue; |
| 275 | |
| 276 | drmm_kfree(minor->dev, d_inode(dent)->i_private); |
| 277 | debugfs_remove(dent); |
| 278 | } |
| 279 | return 0; |
| 280 | } |
| 281 | EXPORT_SYMBOL(drm_debugfs_remove_files); |
| 282 | |
| 283 | /** |
| 284 | * drm_debugfs_dev_init - create debugfs directory for the device |
| 285 | * @dev: the device which we want to create the directory for |
| 286 | * @root: the parent directory depending on the device type |
| 287 | * |
| 288 | * Creates the debugfs directory for the device under the given root directory. |
| 289 | */ |
| 290 | void drm_debugfs_dev_init(struct drm_device *dev, struct dentry *root) |
| 291 | { |
| 292 | dev->debugfs_root = debugfs_create_dir(dev->unique, root); |
| 293 | } |
| 294 | |
| 295 | /** |
| 296 | * drm_debugfs_dev_fini - cleanup debugfs directory |
| 297 | * @dev: the device to cleanup the debugfs stuff |
| 298 | * |
| 299 | * Remove the debugfs directory, might be called multiple times. |
| 300 | */ |
| 301 | void drm_debugfs_dev_fini(struct drm_device *dev) |
| 302 | { |
| 303 | debugfs_remove_recursive(dev->debugfs_root); |
| 304 | dev->debugfs_root = NULL; |
| 305 | } |
| 306 | |
| 307 | void drm_debugfs_dev_register(struct drm_device *dev) |
| 308 | { |
| 309 | drm_debugfs_add_files(dev, drm_debugfs_list, DRM_DEBUGFS_ENTRIES); |
| 310 | |
| 311 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
| 312 | drm_framebuffer_debugfs_init(dev); |
| 313 | drm_client_debugfs_init(dev); |
| 314 | } |
| 315 | if (drm_drv_uses_atomic_modeset(dev)) |
| 316 | drm_atomic_debugfs_init(dev); |
| 317 | } |
| 318 | |
| 319 | int drm_debugfs_register(struct drm_minor *minor, int minor_id, |
| 320 | struct dentry *root) |
| 321 | { |
| 322 | struct drm_device *dev = minor->dev; |
| 323 | char name[64]; |
| 324 | |
| 325 | sprintf(name, "%d", minor_id); |
| 326 | minor->debugfs_symlink = debugfs_create_symlink(name, root, |
| 327 | dev->unique); |
| 328 | |
| 329 | /* TODO: Only for compatibility with drivers */ |
| 330 | minor->debugfs_root = dev->debugfs_root; |
| 331 | |
| 332 | if (dev->driver->debugfs_init && dev->render != minor) |
| 333 | dev->driver->debugfs_init(minor); |
| 334 | |
| 335 | return 0; |
| 336 | } |
| 337 | |
| 338 | void drm_debugfs_unregister(struct drm_minor *minor) |
| 339 | { |
| 340 | debugfs_remove(minor->debugfs_symlink); |
| 341 | minor->debugfs_symlink = NULL; |
| 342 | } |
| 343 | |
| 344 | /** |
| 345 | * drm_debugfs_add_file - Add a given file to the DRM device debugfs file list |
| 346 | * @dev: drm device for the ioctl |
| 347 | * @name: debugfs file name |
| 348 | * @show: show callback |
| 349 | * @data: driver-private data, should not be device-specific |
| 350 | * |
| 351 | * Add a given file entry to the DRM device debugfs file list to be created on |
| 352 | * drm_debugfs_init. |
| 353 | */ |
| 354 | void drm_debugfs_add_file(struct drm_device *dev, const char *name, |
| 355 | int (*show)(struct seq_file*, void*), void *data) |
| 356 | { |
| 357 | struct drm_debugfs_entry *entry = drmm_kzalloc(dev, sizeof(*entry), GFP_KERNEL); |
| 358 | |
| 359 | if (!entry) |
| 360 | return; |
| 361 | |
| 362 | entry->file.name = name; |
| 363 | entry->file.show = show; |
| 364 | entry->file.data = data; |
| 365 | entry->dev = dev; |
| 366 | |
| 367 | debugfs_create_file(name, 0444, dev->debugfs_root, entry, |
| 368 | &drm_debugfs_entry_fops); |
| 369 | } |
| 370 | EXPORT_SYMBOL(drm_debugfs_add_file); |
| 371 | |
| 372 | /** |
| 373 | * drm_debugfs_add_files - Add an array of files to the DRM device debugfs file list |
| 374 | * @dev: drm device for the ioctl |
| 375 | * @files: The array of files to create |
| 376 | * @count: The number of files given |
| 377 | * |
| 378 | * Add a given set of debugfs files represented by an array of |
| 379 | * &struct drm_debugfs_info in the DRM device debugfs file list. |
| 380 | */ |
| 381 | void drm_debugfs_add_files(struct drm_device *dev, const struct drm_debugfs_info *files, int count) |
| 382 | { |
| 383 | int i; |
| 384 | |
| 385 | for (i = 0; i < count; i++) |
| 386 | drm_debugfs_add_file(dev, files[i].name, files[i].show, files[i].data); |
| 387 | } |
| 388 | EXPORT_SYMBOL(drm_debugfs_add_files); |
| 389 | |
| 390 | static int connector_show(struct seq_file *m, void *data) |
| 391 | { |
| 392 | struct drm_connector *connector = m->private; |
| 393 | |
| 394 | seq_printf(m, "%s\n", drm_get_connector_force_name(connector->force)); |
| 395 | |
| 396 | return 0; |
| 397 | } |
| 398 | |
| 399 | static int connector_open(struct inode *inode, struct file *file) |
| 400 | { |
| 401 | struct drm_connector *dev = inode->i_private; |
| 402 | |
| 403 | return single_open(file, connector_show, dev); |
| 404 | } |
| 405 | |
| 406 | static ssize_t connector_write(struct file *file, const char __user *ubuf, |
| 407 | size_t len, loff_t *offp) |
| 408 | { |
| 409 | struct seq_file *m = file->private_data; |
| 410 | struct drm_connector *connector = m->private; |
| 411 | char buf[12]; |
| 412 | |
| 413 | if (len > sizeof(buf) - 1) |
| 414 | return -EINVAL; |
| 415 | |
| 416 | if (copy_from_user(buf, ubuf, len)) |
| 417 | return -EFAULT; |
| 418 | |
| 419 | buf[len] = '\0'; |
| 420 | |
| 421 | if (sysfs_streq(buf, "on")) |
| 422 | connector->force = DRM_FORCE_ON; |
| 423 | else if (sysfs_streq(buf, "digital")) |
| 424 | connector->force = DRM_FORCE_ON_DIGITAL; |
| 425 | else if (sysfs_streq(buf, "off")) |
| 426 | connector->force = DRM_FORCE_OFF; |
| 427 | else if (sysfs_streq(buf, "unspecified")) |
| 428 | connector->force = DRM_FORCE_UNSPECIFIED; |
| 429 | else |
| 430 | return -EINVAL; |
| 431 | |
| 432 | return len; |
| 433 | } |
| 434 | |
| 435 | static int edid_show(struct seq_file *m, void *data) |
| 436 | { |
| 437 | return drm_edid_override_show(m->private, m); |
| 438 | } |
| 439 | |
| 440 | static int edid_open(struct inode *inode, struct file *file) |
| 441 | { |
| 442 | struct drm_connector *dev = inode->i_private; |
| 443 | |
| 444 | return single_open(file, edid_show, dev); |
| 445 | } |
| 446 | |
| 447 | static ssize_t edid_write(struct file *file, const char __user *ubuf, |
| 448 | size_t len, loff_t *offp) |
| 449 | { |
| 450 | struct seq_file *m = file->private_data; |
| 451 | struct drm_connector *connector = m->private; |
| 452 | char *buf; |
| 453 | int ret; |
| 454 | |
| 455 | buf = memdup_user(ubuf, len); |
| 456 | if (IS_ERR(buf)) |
| 457 | return PTR_ERR(buf); |
| 458 | |
| 459 | if (len == 5 && !strncmp(buf, "reset", 5)) |
| 460 | ret = drm_edid_override_reset(connector); |
| 461 | else |
| 462 | ret = drm_edid_override_set(connector, buf, len); |
| 463 | |
| 464 | kfree(buf); |
| 465 | |
| 466 | return ret ? ret : len; |
| 467 | } |
| 468 | |
| 469 | /* |
| 470 | * Returns the min and max vrr vfreq through the connector's debugfs file. |
| 471 | * Example usage: cat /sys/kernel/debug/dri/0/DP-1/vrr_range |
| 472 | */ |
| 473 | static int vrr_range_show(struct seq_file *m, void *data) |
| 474 | { |
| 475 | struct drm_connector *connector = m->private; |
| 476 | |
| 477 | if (connector->status != connector_status_connected) |
| 478 | return -ENODEV; |
| 479 | |
| 480 | seq_printf(m, "Min: %u\n", connector->display_info.monitor_range.min_vfreq); |
| 481 | seq_printf(m, "Max: %u\n", connector->display_info.monitor_range.max_vfreq); |
| 482 | |
| 483 | return 0; |
| 484 | } |
| 485 | DEFINE_SHOW_ATTRIBUTE(vrr_range); |
| 486 | |
| 487 | /* |
| 488 | * Returns Connector's max supported bpc through debugfs file. |
| 489 | * Example usage: cat /sys/kernel/debug/dri/0/DP-1/output_bpc |
| 490 | */ |
| 491 | static int output_bpc_show(struct seq_file *m, void *data) |
| 492 | { |
| 493 | struct drm_connector *connector = m->private; |
| 494 | |
| 495 | if (connector->status != connector_status_connected) |
| 496 | return -ENODEV; |
| 497 | |
| 498 | seq_printf(m, "Maximum: %u\n", connector->display_info.bpc); |
| 499 | |
| 500 | return 0; |
| 501 | } |
| 502 | DEFINE_SHOW_ATTRIBUTE(output_bpc); |
| 503 | |
| 504 | static const struct file_operations drm_edid_fops = { |
| 505 | .owner = THIS_MODULE, |
| 506 | .open = edid_open, |
| 507 | .read = seq_read, |
| 508 | .llseek = seq_lseek, |
| 509 | .release = single_release, |
| 510 | .write = edid_write |
| 511 | }; |
| 512 | |
| 513 | |
| 514 | static const struct file_operations drm_connector_fops = { |
| 515 | .owner = THIS_MODULE, |
| 516 | .open = connector_open, |
| 517 | .read = seq_read, |
| 518 | .llseek = seq_lseek, |
| 519 | .release = single_release, |
| 520 | .write = connector_write |
| 521 | }; |
| 522 | |
| 523 | #define HDMI_MAX_INFOFRAME_SIZE 29 |
| 524 | |
| 525 | static ssize_t |
| 526 | audio_infoframe_read(struct file *filp, char __user *ubuf, size_t count, loff_t *ppos) |
| 527 | { |
| 528 | struct drm_connector_hdmi_infoframe *infoframe; |
| 529 | struct drm_connector *connector; |
| 530 | union hdmi_infoframe *frame; |
| 531 | u8 buf[HDMI_INFOFRAME_SIZE(AUDIO)]; |
| 532 | ssize_t len = 0; |
| 533 | |
| 534 | connector = filp->private_data; |
| 535 | mutex_lock(&connector->hdmi.infoframes.lock); |
| 536 | |
| 537 | infoframe = &connector->hdmi.infoframes.audio; |
| 538 | if (!infoframe->set) |
| 539 | goto out; |
| 540 | |
| 541 | frame = &infoframe->data; |
| 542 | len = hdmi_infoframe_pack(frame, buf, sizeof(buf)); |
| 543 | if (len < 0) |
| 544 | goto out; |
| 545 | |
| 546 | len = simple_read_from_buffer(ubuf, count, ppos, buf, len); |
| 547 | |
| 548 | out: |
| 549 | mutex_unlock(&connector->hdmi.infoframes.lock); |
| 550 | return len; |
| 551 | } |
| 552 | |
| 553 | static const struct file_operations audio_infoframe_fops = { |
| 554 | .owner = THIS_MODULE, |
| 555 | .open = simple_open, |
| 556 | .read = audio_infoframe_read, |
| 557 | }; |
| 558 | |
| 559 | static int create_hdmi_audio_infoframe_file(struct drm_connector *connector, |
| 560 | struct dentry *parent) |
| 561 | { |
| 562 | struct dentry *file; |
| 563 | |
| 564 | file = debugfs_create_file("audio", 0400, parent, connector, &audio_infoframe_fops); |
| 565 | if (IS_ERR(file)) |
| 566 | return PTR_ERR(file); |
| 567 | |
| 568 | return 0; |
| 569 | } |
| 570 | |
| 571 | #define DEFINE_INFOFRAME_FILE(_f) \ |
| 572 | static ssize_t _f##_read_infoframe(struct file *filp, \ |
| 573 | char __user *ubuf, \ |
| 574 | size_t count, \ |
| 575 | loff_t *ppos) \ |
| 576 | { \ |
| 577 | struct drm_connector_hdmi_infoframe *infoframe; \ |
| 578 | struct drm_connector_state *conn_state; \ |
| 579 | struct drm_connector *connector; \ |
| 580 | union hdmi_infoframe *frame; \ |
| 581 | struct drm_device *dev; \ |
| 582 | u8 buf[HDMI_MAX_INFOFRAME_SIZE]; \ |
| 583 | ssize_t len = 0; \ |
| 584 | \ |
| 585 | connector = filp->private_data; \ |
| 586 | dev = connector->dev; \ |
| 587 | \ |
| 588 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); \ |
| 589 | \ |
| 590 | conn_state = connector->state; \ |
| 591 | infoframe = &conn_state->hdmi.infoframes._f; \ |
| 592 | if (!infoframe->set) \ |
| 593 | goto out; \ |
| 594 | \ |
| 595 | frame = &infoframe->data; \ |
| 596 | len = hdmi_infoframe_pack(frame, buf, sizeof(buf)); \ |
| 597 | if (len < 0) \ |
| 598 | goto out; \ |
| 599 | \ |
| 600 | len = simple_read_from_buffer(ubuf, count, ppos, buf, len); \ |
| 601 | \ |
| 602 | out: \ |
| 603 | drm_modeset_unlock(&dev->mode_config.connection_mutex); \ |
| 604 | return len; \ |
| 605 | } \ |
| 606 | \ |
| 607 | static const struct file_operations _f##_infoframe_fops = { \ |
| 608 | .owner = THIS_MODULE, \ |
| 609 | .open = simple_open, \ |
| 610 | .read = _f##_read_infoframe, \ |
| 611 | }; \ |
| 612 | \ |
| 613 | static int create_hdmi_## _f ## _infoframe_file(struct drm_connector *connector, \ |
| 614 | struct dentry *parent) \ |
| 615 | { \ |
| 616 | struct dentry *file; \ |
| 617 | \ |
| 618 | file = debugfs_create_file(#_f, 0400, parent, connector, &_f ## _infoframe_fops); \ |
| 619 | if (IS_ERR(file)) \ |
| 620 | return PTR_ERR(file); \ |
| 621 | \ |
| 622 | return 0; \ |
| 623 | } |
| 624 | |
| 625 | DEFINE_INFOFRAME_FILE(avi); |
| 626 | DEFINE_INFOFRAME_FILE(hdmi); |
| 627 | DEFINE_INFOFRAME_FILE(hdr_drm); |
| 628 | DEFINE_INFOFRAME_FILE(spd); |
| 629 | |
| 630 | static int create_hdmi_infoframe_files(struct drm_connector *connector, |
| 631 | struct dentry *parent) |
| 632 | { |
| 633 | int ret; |
| 634 | |
| 635 | ret = create_hdmi_audio_infoframe_file(connector, parent); |
| 636 | if (ret) |
| 637 | return ret; |
| 638 | |
| 639 | ret = create_hdmi_avi_infoframe_file(connector, parent); |
| 640 | if (ret) |
| 641 | return ret; |
| 642 | |
| 643 | ret = create_hdmi_hdmi_infoframe_file(connector, parent); |
| 644 | if (ret) |
| 645 | return ret; |
| 646 | |
| 647 | ret = create_hdmi_hdr_drm_infoframe_file(connector, parent); |
| 648 | if (ret) |
| 649 | return ret; |
| 650 | |
| 651 | ret = create_hdmi_spd_infoframe_file(connector, parent); |
| 652 | if (ret) |
| 653 | return ret; |
| 654 | |
| 655 | return 0; |
| 656 | } |
| 657 | |
| 658 | static void hdmi_debugfs_add(struct drm_connector *connector) |
| 659 | { |
| 660 | struct dentry *dir; |
| 661 | |
| 662 | if (!(connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || |
| 663 | connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)) |
| 664 | return; |
| 665 | |
| 666 | dir = debugfs_create_dir("infoframes", connector->debugfs_entry); |
| 667 | if (IS_ERR(dir)) |
| 668 | return; |
| 669 | |
| 670 | create_hdmi_infoframe_files(connector, dir); |
| 671 | } |
| 672 | |
| 673 | void drm_debugfs_connector_add(struct drm_connector *connector) |
| 674 | { |
| 675 | struct drm_device *dev = connector->dev; |
| 676 | struct dentry *root; |
| 677 | |
| 678 | if (!dev->debugfs_root) |
| 679 | return; |
| 680 | |
| 681 | root = debugfs_create_dir(connector->name, dev->debugfs_root); |
| 682 | connector->debugfs_entry = root; |
| 683 | |
| 684 | /* force */ |
| 685 | debugfs_create_file("force", 0644, root, connector, |
| 686 | &drm_connector_fops); |
| 687 | |
| 688 | /* edid */ |
| 689 | debugfs_create_file("edid_override", 0644, root, connector, |
| 690 | &drm_edid_fops); |
| 691 | |
| 692 | /* vrr range */ |
| 693 | debugfs_create_file("vrr_range", 0444, root, connector, |
| 694 | &vrr_range_fops); |
| 695 | |
| 696 | /* max bpc */ |
| 697 | debugfs_create_file("output_bpc", 0444, root, connector, |
| 698 | &output_bpc_fops); |
| 699 | |
| 700 | hdmi_debugfs_add(connector); |
| 701 | |
| 702 | if (connector->funcs->debugfs_init) |
| 703 | connector->funcs->debugfs_init(connector, root); |
| 704 | } |
| 705 | |
| 706 | void drm_debugfs_connector_remove(struct drm_connector *connector) |
| 707 | { |
| 708 | if (!connector->debugfs_entry) |
| 709 | return; |
| 710 | |
| 711 | debugfs_remove_recursive(connector->debugfs_entry); |
| 712 | |
| 713 | connector->debugfs_entry = NULL; |
| 714 | } |
| 715 | |
| 716 | void drm_debugfs_crtc_add(struct drm_crtc *crtc) |
| 717 | { |
| 718 | struct drm_device *dev = crtc->dev; |
| 719 | struct dentry *root; |
| 720 | char *name; |
| 721 | |
| 722 | name = kasprintf(GFP_KERNEL, "crtc-%d", crtc->index); |
| 723 | if (!name) |
| 724 | return; |
| 725 | |
| 726 | root = debugfs_create_dir(name, dev->debugfs_root); |
| 727 | kfree(name); |
| 728 | |
| 729 | crtc->debugfs_entry = root; |
| 730 | |
| 731 | drm_debugfs_crtc_crc_add(crtc); |
| 732 | } |
| 733 | |
| 734 | void drm_debugfs_crtc_remove(struct drm_crtc *crtc) |
| 735 | { |
| 736 | debugfs_remove_recursive(crtc->debugfs_entry); |
| 737 | crtc->debugfs_entry = NULL; |
| 738 | } |
| 739 | |
| 740 | static int bridges_show(struct seq_file *m, void *data) |
| 741 | { |
| 742 | struct drm_encoder *encoder = m->private; |
| 743 | struct drm_printer p = drm_seq_file_printer(m); |
| 744 | struct drm_bridge *bridge; |
| 745 | unsigned int idx = 0; |
| 746 | |
| 747 | drm_for_each_bridge_in_chain(encoder, bridge) { |
| 748 | drm_printf(&p, "bridge[%d]: %ps\n", idx++, bridge->funcs); |
| 749 | drm_printf(&p, "\ttype: [%d] %s\n", |
| 750 | bridge->type, |
| 751 | drm_get_connector_type_name(bridge->type)); |
| 752 | |
| 753 | if (bridge->of_node) |
| 754 | drm_printf(&p, "\tOF: %pOFfc\n", bridge->of_node); |
| 755 | |
| 756 | drm_printf(&p, "\tops: [0x%x]", bridge->ops); |
| 757 | if (bridge->ops & DRM_BRIDGE_OP_DETECT) |
| 758 | drm_puts(&p, " detect"); |
| 759 | if (bridge->ops & DRM_BRIDGE_OP_EDID) |
| 760 | drm_puts(&p, " edid"); |
| 761 | if (bridge->ops & DRM_BRIDGE_OP_HPD) |
| 762 | drm_puts(&p, " hpd"); |
| 763 | if (bridge->ops & DRM_BRIDGE_OP_MODES) |
| 764 | drm_puts(&p, " modes"); |
| 765 | if (bridge->ops & DRM_BRIDGE_OP_HDMI) |
| 766 | drm_puts(&p, " hdmi"); |
| 767 | drm_puts(&p, "\n"); |
| 768 | } |
| 769 | |
| 770 | return 0; |
| 771 | } |
| 772 | DEFINE_SHOW_ATTRIBUTE(bridges); |
| 773 | |
| 774 | void drm_debugfs_encoder_add(struct drm_encoder *encoder) |
| 775 | { |
| 776 | struct drm_minor *minor = encoder->dev->primary; |
| 777 | struct dentry *root; |
| 778 | char *name; |
| 779 | |
| 780 | name = kasprintf(GFP_KERNEL, "encoder-%d", encoder->index); |
| 781 | if (!name) |
| 782 | return; |
| 783 | |
| 784 | root = debugfs_create_dir(name, minor->debugfs_root); |
| 785 | kfree(name); |
| 786 | |
| 787 | encoder->debugfs_entry = root; |
| 788 | |
| 789 | /* bridges list */ |
| 790 | debugfs_create_file("bridges", 0444, root, encoder, |
| 791 | &bridges_fops); |
| 792 | |
| 793 | if (encoder->funcs && encoder->funcs->debugfs_init) |
| 794 | encoder->funcs->debugfs_init(encoder, root); |
| 795 | } |
| 796 | |
| 797 | void drm_debugfs_encoder_remove(struct drm_encoder *encoder) |
| 798 | { |
| 799 | debugfs_remove_recursive(encoder->debugfs_entry); |
| 800 | encoder->debugfs_entry = NULL; |
| 801 | } |