1 | // SPDX-License-Identifier: GPL-2.0+ |
---|---|
2 | |
3 | #include <linux/slab.h> |
4 | |
5 | #include <drm/drm_print.h> |
6 | #include <drm/drm_debugfs.h> |
7 | #include <kunit/visibility.h> |
8 | |
9 | #include "vkms_config.h" |
10 | |
11 | struct vkms_config *vkms_config_create(const char *dev_name) |
12 | { |
13 | struct vkms_config *config; |
14 | |
15 | config = kzalloc(sizeof(*config), GFP_KERNEL); |
16 | if (!config) |
17 | return ERR_PTR(error: -ENOMEM); |
18 | |
19 | config->dev_name = kstrdup_const(s: dev_name, GFP_KERNEL); |
20 | if (!config->dev_name) { |
21 | kfree(objp: config); |
22 | return ERR_PTR(error: -ENOMEM); |
23 | } |
24 | |
25 | INIT_LIST_HEAD(list: &config->planes); |
26 | INIT_LIST_HEAD(list: &config->crtcs); |
27 | INIT_LIST_HEAD(list: &config->encoders); |
28 | INIT_LIST_HEAD(list: &config->connectors); |
29 | |
30 | return config; |
31 | } |
32 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_create); |
33 | |
34 | struct vkms_config *vkms_config_default_create(bool enable_cursor, |
35 | bool enable_writeback, |
36 | bool enable_overlay) |
37 | { |
38 | struct vkms_config *config; |
39 | struct vkms_config_plane *plane_cfg; |
40 | struct vkms_config_crtc *crtc_cfg; |
41 | struct vkms_config_encoder *encoder_cfg; |
42 | struct vkms_config_connector *connector_cfg; |
43 | int n; |
44 | |
45 | config = vkms_config_create(DEFAULT_DEVICE_NAME); |
46 | if (IS_ERR(ptr: config)) |
47 | return config; |
48 | |
49 | plane_cfg = vkms_config_create_plane(config); |
50 | if (IS_ERR(ptr: plane_cfg)) |
51 | goto err_alloc; |
52 | vkms_config_plane_set_type(plane_cfg, type: DRM_PLANE_TYPE_PRIMARY); |
53 | |
54 | crtc_cfg = vkms_config_create_crtc(config); |
55 | if (IS_ERR(ptr: crtc_cfg)) |
56 | goto err_alloc; |
57 | vkms_config_crtc_set_writeback(crtc_cfg, writeback: enable_writeback); |
58 | |
59 | if (vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg)) |
60 | goto err_alloc; |
61 | |
62 | if (enable_overlay) { |
63 | for (n = 0; n < NUM_OVERLAY_PLANES; n++) { |
64 | plane_cfg = vkms_config_create_plane(config); |
65 | if (IS_ERR(ptr: plane_cfg)) |
66 | goto err_alloc; |
67 | |
68 | vkms_config_plane_set_type(plane_cfg, |
69 | type: DRM_PLANE_TYPE_OVERLAY); |
70 | |
71 | if (vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg)) |
72 | goto err_alloc; |
73 | } |
74 | } |
75 | |
76 | if (enable_cursor) { |
77 | plane_cfg = vkms_config_create_plane(config); |
78 | if (IS_ERR(ptr: plane_cfg)) |
79 | goto err_alloc; |
80 | |
81 | vkms_config_plane_set_type(plane_cfg, type: DRM_PLANE_TYPE_CURSOR); |
82 | |
83 | if (vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg)) |
84 | goto err_alloc; |
85 | } |
86 | |
87 | encoder_cfg = vkms_config_create_encoder(config); |
88 | if (IS_ERR(ptr: encoder_cfg)) |
89 | goto err_alloc; |
90 | |
91 | if (vkms_config_encoder_attach_crtc(encoder_cfg, crtc_cfg)) |
92 | goto err_alloc; |
93 | |
94 | connector_cfg = vkms_config_create_connector(config); |
95 | if (IS_ERR(ptr: connector_cfg)) |
96 | goto err_alloc; |
97 | |
98 | if (vkms_config_connector_attach_encoder(connector_cfg, encoder_cfg)) |
99 | goto err_alloc; |
100 | |
101 | return config; |
102 | |
103 | err_alloc: |
104 | vkms_config_destroy(config); |
105 | return ERR_PTR(error: -ENOMEM); |
106 | } |
107 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_default_create); |
108 | |
109 | void vkms_config_destroy(struct vkms_config *config) |
110 | { |
111 | struct vkms_config_plane *plane_cfg, *plane_tmp; |
112 | struct vkms_config_crtc *crtc_cfg, *crtc_tmp; |
113 | struct vkms_config_encoder *encoder_cfg, *encoder_tmp; |
114 | struct vkms_config_connector *connector_cfg, *connector_tmp; |
115 | |
116 | list_for_each_entry_safe(plane_cfg, plane_tmp, &config->planes, link) |
117 | vkms_config_destroy_plane(plane_cfg); |
118 | |
119 | list_for_each_entry_safe(crtc_cfg, crtc_tmp, &config->crtcs, link) |
120 | vkms_config_destroy_crtc(config, crtc_cfg); |
121 | |
122 | list_for_each_entry_safe(encoder_cfg, encoder_tmp, &config->encoders, link) |
123 | vkms_config_destroy_encoder(config, encoder_cfg); |
124 | |
125 | list_for_each_entry_safe(connector_cfg, connector_tmp, &config->connectors, link) |
126 | vkms_config_destroy_connector(connector_cfg); |
127 | |
128 | kfree_const(x: config->dev_name); |
129 | kfree(objp: config); |
130 | } |
131 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_destroy); |
132 | |
133 | static bool valid_plane_number(const struct vkms_config *config) |
134 | { |
135 | struct drm_device *dev = config->dev ? &config->dev->drm : NULL; |
136 | size_t n_planes; |
137 | |
138 | n_planes = list_count_nodes(head: (struct list_head *)&config->planes); |
139 | if (n_planes <= 0 || n_planes >= 32) { |
140 | drm_info(dev, "The number of planes must be between 1 and 31\n"); |
141 | return false; |
142 | } |
143 | |
144 | return true; |
145 | } |
146 | |
147 | static bool valid_planes_for_crtc(const struct vkms_config *config, |
148 | struct vkms_config_crtc *crtc_cfg) |
149 | { |
150 | struct drm_device *dev = config->dev ? &config->dev->drm : NULL; |
151 | struct vkms_config_plane *plane_cfg; |
152 | bool has_primary_plane = false; |
153 | bool has_cursor_plane = false; |
154 | |
155 | vkms_config_for_each_plane(config, plane_cfg) { |
156 | struct vkms_config_crtc *possible_crtc; |
157 | unsigned long idx = 0; |
158 | enum drm_plane_type type; |
159 | |
160 | type = vkms_config_plane_get_type(plane_cfg); |
161 | |
162 | vkms_config_plane_for_each_possible_crtc(plane_cfg, idx, possible_crtc) { |
163 | if (possible_crtc != crtc_cfg) |
164 | continue; |
165 | |
166 | if (type == DRM_PLANE_TYPE_PRIMARY) { |
167 | if (has_primary_plane) { |
168 | drm_info(dev, "Multiple primary planes\n"); |
169 | return false; |
170 | } |
171 | |
172 | has_primary_plane = true; |
173 | } else if (type == DRM_PLANE_TYPE_CURSOR) { |
174 | if (has_cursor_plane) { |
175 | drm_info(dev, "Multiple cursor planes\n"); |
176 | return false; |
177 | } |
178 | |
179 | has_cursor_plane = true; |
180 | } |
181 | } |
182 | } |
183 | |
184 | if (!has_primary_plane) { |
185 | drm_info(dev, "Primary plane not found\n"); |
186 | return false; |
187 | } |
188 | |
189 | return true; |
190 | } |
191 | |
192 | static bool valid_plane_possible_crtcs(const struct vkms_config *config) |
193 | { |
194 | struct drm_device *dev = config->dev ? &config->dev->drm : NULL; |
195 | struct vkms_config_plane *plane_cfg; |
196 | |
197 | vkms_config_for_each_plane(config, plane_cfg) { |
198 | if (xa_empty(xa: &plane_cfg->possible_crtcs)) { |
199 | drm_info(dev, "All planes must have at least one possible CRTC\n"); |
200 | return false; |
201 | } |
202 | } |
203 | |
204 | return true; |
205 | } |
206 | |
207 | static bool valid_crtc_number(const struct vkms_config *config) |
208 | { |
209 | struct drm_device *dev = config->dev ? &config->dev->drm : NULL; |
210 | size_t n_crtcs; |
211 | |
212 | n_crtcs = list_count_nodes(head: (struct list_head *)&config->crtcs); |
213 | if (n_crtcs <= 0 || n_crtcs >= 32) { |
214 | drm_info(dev, "The number of CRTCs must be between 1 and 31\n"); |
215 | return false; |
216 | } |
217 | |
218 | return true; |
219 | } |
220 | |
221 | static bool valid_encoder_number(const struct vkms_config *config) |
222 | { |
223 | struct drm_device *dev = config->dev ? &config->dev->drm : NULL; |
224 | size_t n_encoders; |
225 | |
226 | n_encoders = list_count_nodes(head: (struct list_head *)&config->encoders); |
227 | if (n_encoders <= 0 || n_encoders >= 32) { |
228 | drm_info(dev, "The number of encoders must be between 1 and 31\n"); |
229 | return false; |
230 | } |
231 | |
232 | return true; |
233 | } |
234 | |
235 | static bool valid_encoder_possible_crtcs(const struct vkms_config *config) |
236 | { |
237 | struct drm_device *dev = config->dev ? &config->dev->drm : NULL; |
238 | struct vkms_config_crtc *crtc_cfg; |
239 | struct vkms_config_encoder *encoder_cfg; |
240 | |
241 | vkms_config_for_each_encoder(config, encoder_cfg) { |
242 | if (xa_empty(xa: &encoder_cfg->possible_crtcs)) { |
243 | drm_info(dev, "All encoders must have at least one possible CRTC\n"); |
244 | return false; |
245 | } |
246 | } |
247 | |
248 | vkms_config_for_each_crtc(config, crtc_cfg) { |
249 | bool crtc_has_encoder = false; |
250 | |
251 | vkms_config_for_each_encoder(config, encoder_cfg) { |
252 | struct vkms_config_crtc *possible_crtc; |
253 | unsigned long idx = 0; |
254 | |
255 | vkms_config_encoder_for_each_possible_crtc(encoder_cfg, |
256 | idx, possible_crtc) { |
257 | if (possible_crtc == crtc_cfg) |
258 | crtc_has_encoder = true; |
259 | } |
260 | } |
261 | |
262 | if (!crtc_has_encoder) { |
263 | drm_info(dev, "All CRTCs must have at least one possible encoder\n"); |
264 | return false; |
265 | } |
266 | } |
267 | |
268 | return true; |
269 | } |
270 | |
271 | static bool valid_connector_number(const struct vkms_config *config) |
272 | { |
273 | struct drm_device *dev = config->dev ? &config->dev->drm : NULL; |
274 | size_t n_connectors; |
275 | |
276 | n_connectors = list_count_nodes(head: (struct list_head *)&config->connectors); |
277 | if (n_connectors <= 0 || n_connectors >= 32) { |
278 | drm_info(dev, "The number of connectors must be between 1 and 31\n"); |
279 | return false; |
280 | } |
281 | |
282 | return true; |
283 | } |
284 | |
285 | static bool valid_connector_possible_encoders(const struct vkms_config *config) |
286 | { |
287 | struct drm_device *dev = config->dev ? &config->dev->drm : NULL; |
288 | struct vkms_config_connector *connector_cfg; |
289 | |
290 | vkms_config_for_each_connector(config, connector_cfg) { |
291 | if (xa_empty(xa: &connector_cfg->possible_encoders)) { |
292 | drm_info(dev, |
293 | "All connectors must have at least one possible encoder\n"); |
294 | return false; |
295 | } |
296 | } |
297 | |
298 | return true; |
299 | } |
300 | |
301 | bool vkms_config_is_valid(const struct vkms_config *config) |
302 | { |
303 | struct vkms_config_crtc *crtc_cfg; |
304 | |
305 | if (!valid_plane_number(config)) |
306 | return false; |
307 | |
308 | if (!valid_crtc_number(config)) |
309 | return false; |
310 | |
311 | if (!valid_encoder_number(config)) |
312 | return false; |
313 | |
314 | if (!valid_connector_number(config)) |
315 | return false; |
316 | |
317 | if (!valid_plane_possible_crtcs(config)) |
318 | return false; |
319 | |
320 | vkms_config_for_each_crtc(config, crtc_cfg) { |
321 | if (!valid_planes_for_crtc(config, crtc_cfg)) |
322 | return false; |
323 | } |
324 | |
325 | if (!valid_encoder_possible_crtcs(config)) |
326 | return false; |
327 | |
328 | if (!valid_connector_possible_encoders(config)) |
329 | return false; |
330 | |
331 | return true; |
332 | } |
333 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_is_valid); |
334 | |
335 | static int vkms_config_show(struct seq_file *m, void *data) |
336 | { |
337 | struct drm_debugfs_entry *entry = m->private; |
338 | struct drm_device *dev = entry->dev; |
339 | struct vkms_device *vkmsdev = drm_device_to_vkms_device(dev); |
340 | const char *dev_name; |
341 | struct vkms_config_plane *plane_cfg; |
342 | struct vkms_config_crtc *crtc_cfg; |
343 | struct vkms_config_encoder *encoder_cfg; |
344 | struct vkms_config_connector *connector_cfg; |
345 | |
346 | dev_name = vkms_config_get_device_name(config: (struct vkms_config *)vkmsdev->config); |
347 | seq_printf(m, fmt: "dev_name=%s\n", dev_name); |
348 | |
349 | vkms_config_for_each_plane(vkmsdev->config, plane_cfg) { |
350 | seq_puts(m, s: "plane:\n"); |
351 | seq_printf(m, fmt: "\ttype=%d\n", |
352 | vkms_config_plane_get_type(plane_cfg)); |
353 | } |
354 | |
355 | vkms_config_for_each_crtc(vkmsdev->config, crtc_cfg) { |
356 | seq_puts(m, s: "crtc:\n"); |
357 | seq_printf(m, fmt: "\twriteback=%d\n", |
358 | vkms_config_crtc_get_writeback(crtc_cfg)); |
359 | } |
360 | |
361 | vkms_config_for_each_encoder(vkmsdev->config, encoder_cfg) |
362 | seq_puts(m, s: "encoder\n"); |
363 | |
364 | vkms_config_for_each_connector(vkmsdev->config, connector_cfg) |
365 | seq_puts(m, s: "connector\n"); |
366 | |
367 | return 0; |
368 | } |
369 | |
370 | static const struct drm_debugfs_info vkms_config_debugfs_list[] = { |
371 | { "vkms_config", vkms_config_show, 0 }, |
372 | }; |
373 | |
374 | void vkms_config_register_debugfs(struct vkms_device *vkms_device) |
375 | { |
376 | drm_debugfs_add_files(dev: &vkms_device->drm, files: vkms_config_debugfs_list, |
377 | ARRAY_SIZE(vkms_config_debugfs_list)); |
378 | } |
379 | |
380 | struct vkms_config_plane *vkms_config_create_plane(struct vkms_config *config) |
381 | { |
382 | struct vkms_config_plane *plane_cfg; |
383 | |
384 | plane_cfg = kzalloc(sizeof(*plane_cfg), GFP_KERNEL); |
385 | if (!plane_cfg) |
386 | return ERR_PTR(error: -ENOMEM); |
387 | |
388 | plane_cfg->config = config; |
389 | vkms_config_plane_set_type(plane_cfg, type: DRM_PLANE_TYPE_OVERLAY); |
390 | xa_init_flags(xa: &plane_cfg->possible_crtcs, XA_FLAGS_ALLOC); |
391 | |
392 | list_add_tail(new: &plane_cfg->link, head: &config->planes); |
393 | |
394 | return plane_cfg; |
395 | } |
396 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_create_plane); |
397 | |
398 | void vkms_config_destroy_plane(struct vkms_config_plane *plane_cfg) |
399 | { |
400 | xa_destroy(&plane_cfg->possible_crtcs); |
401 | list_del(entry: &plane_cfg->link); |
402 | kfree(objp: plane_cfg); |
403 | } |
404 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_destroy_plane); |
405 | |
406 | int __must_check vkms_config_plane_attach_crtc(struct vkms_config_plane *plane_cfg, |
407 | struct vkms_config_crtc *crtc_cfg) |
408 | { |
409 | struct vkms_config_crtc *possible_crtc; |
410 | unsigned long idx = 0; |
411 | u32 crtc_idx = 0; |
412 | |
413 | if (plane_cfg->config != crtc_cfg->config) |
414 | return -EINVAL; |
415 | |
416 | vkms_config_plane_for_each_possible_crtc(plane_cfg, idx, possible_crtc) { |
417 | if (possible_crtc == crtc_cfg) |
418 | return -EEXIST; |
419 | } |
420 | |
421 | return xa_alloc(xa: &plane_cfg->possible_crtcs, id: &crtc_idx, entry: crtc_cfg, |
422 | xa_limit_32b, GFP_KERNEL); |
423 | } |
424 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_plane_attach_crtc); |
425 | |
426 | void vkms_config_plane_detach_crtc(struct vkms_config_plane *plane_cfg, |
427 | struct vkms_config_crtc *crtc_cfg) |
428 | { |
429 | struct vkms_config_crtc *possible_crtc; |
430 | unsigned long idx = 0; |
431 | |
432 | vkms_config_plane_for_each_possible_crtc(plane_cfg, idx, possible_crtc) { |
433 | if (possible_crtc == crtc_cfg) |
434 | xa_erase(&plane_cfg->possible_crtcs, index: idx); |
435 | } |
436 | } |
437 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_plane_detach_crtc); |
438 | |
439 | struct vkms_config_crtc *vkms_config_create_crtc(struct vkms_config *config) |
440 | { |
441 | struct vkms_config_crtc *crtc_cfg; |
442 | |
443 | crtc_cfg = kzalloc(sizeof(*crtc_cfg), GFP_KERNEL); |
444 | if (!crtc_cfg) |
445 | return ERR_PTR(error: -ENOMEM); |
446 | |
447 | crtc_cfg->config = config; |
448 | vkms_config_crtc_set_writeback(crtc_cfg, writeback: false); |
449 | |
450 | list_add_tail(new: &crtc_cfg->link, head: &config->crtcs); |
451 | |
452 | return crtc_cfg; |
453 | } |
454 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_create_crtc); |
455 | |
456 | void vkms_config_destroy_crtc(struct vkms_config *config, |
457 | struct vkms_config_crtc *crtc_cfg) |
458 | { |
459 | struct vkms_config_plane *plane_cfg; |
460 | struct vkms_config_encoder *encoder_cfg; |
461 | |
462 | vkms_config_for_each_plane(config, plane_cfg) |
463 | vkms_config_plane_detach_crtc(plane_cfg, crtc_cfg); |
464 | |
465 | vkms_config_for_each_encoder(config, encoder_cfg) |
466 | vkms_config_encoder_detach_crtc(encoder_cfg, crtc_cfg); |
467 | |
468 | list_del(entry: &crtc_cfg->link); |
469 | kfree(objp: crtc_cfg); |
470 | } |
471 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_destroy_crtc); |
472 | |
473 | /** |
474 | * vkms_config_crtc_get_plane() - Return the first attached plane to a CRTC with |
475 | * the specific type |
476 | * @config: Configuration containing the CRTC and the plane |
477 | * @crtc_cfg: Only find planes attached to this CRTC |
478 | * @type: Plane type to search |
479 | * |
480 | * Returns: |
481 | * The first plane found attached to @crtc_cfg with the type @type. |
482 | */ |
483 | static struct vkms_config_plane *vkms_config_crtc_get_plane(const struct vkms_config *config, |
484 | struct vkms_config_crtc *crtc_cfg, |
485 | enum drm_plane_type type) |
486 | { |
487 | struct vkms_config_plane *plane_cfg; |
488 | struct vkms_config_crtc *possible_crtc; |
489 | enum drm_plane_type current_type; |
490 | unsigned long idx = 0; |
491 | |
492 | vkms_config_for_each_plane(config, plane_cfg) { |
493 | current_type = vkms_config_plane_get_type(plane_cfg); |
494 | |
495 | vkms_config_plane_for_each_possible_crtc(plane_cfg, idx, possible_crtc) { |
496 | if (possible_crtc == crtc_cfg && current_type == type) |
497 | return plane_cfg; |
498 | } |
499 | } |
500 | |
501 | return NULL; |
502 | } |
503 | |
504 | struct vkms_config_plane *vkms_config_crtc_primary_plane(const struct vkms_config *config, |
505 | struct vkms_config_crtc *crtc_cfg) |
506 | { |
507 | return vkms_config_crtc_get_plane(config, crtc_cfg, type: DRM_PLANE_TYPE_PRIMARY); |
508 | } |
509 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_crtc_primary_plane); |
510 | |
511 | struct vkms_config_plane *vkms_config_crtc_cursor_plane(const struct vkms_config *config, |
512 | struct vkms_config_crtc *crtc_cfg) |
513 | { |
514 | return vkms_config_crtc_get_plane(config, crtc_cfg, type: DRM_PLANE_TYPE_CURSOR); |
515 | } |
516 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_crtc_cursor_plane); |
517 | |
518 | struct vkms_config_encoder *vkms_config_create_encoder(struct vkms_config *config) |
519 | { |
520 | struct vkms_config_encoder *encoder_cfg; |
521 | |
522 | encoder_cfg = kzalloc(sizeof(*encoder_cfg), GFP_KERNEL); |
523 | if (!encoder_cfg) |
524 | return ERR_PTR(error: -ENOMEM); |
525 | |
526 | encoder_cfg->config = config; |
527 | xa_init_flags(xa: &encoder_cfg->possible_crtcs, XA_FLAGS_ALLOC); |
528 | |
529 | list_add_tail(new: &encoder_cfg->link, head: &config->encoders); |
530 | |
531 | return encoder_cfg; |
532 | } |
533 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_create_encoder); |
534 | |
535 | void vkms_config_destroy_encoder(struct vkms_config *config, |
536 | struct vkms_config_encoder *encoder_cfg) |
537 | { |
538 | struct vkms_config_connector *connector_cfg; |
539 | |
540 | vkms_config_for_each_connector(config, connector_cfg) |
541 | vkms_config_connector_detach_encoder(connector_cfg, encoder_cfg); |
542 | |
543 | xa_destroy(&encoder_cfg->possible_crtcs); |
544 | list_del(entry: &encoder_cfg->link); |
545 | kfree(objp: encoder_cfg); |
546 | } |
547 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_destroy_encoder); |
548 | |
549 | int __must_check vkms_config_encoder_attach_crtc(struct vkms_config_encoder *encoder_cfg, |
550 | struct vkms_config_crtc *crtc_cfg) |
551 | { |
552 | struct vkms_config_crtc *possible_crtc; |
553 | unsigned long idx = 0; |
554 | u32 crtc_idx = 0; |
555 | |
556 | if (encoder_cfg->config != crtc_cfg->config) |
557 | return -EINVAL; |
558 | |
559 | vkms_config_encoder_for_each_possible_crtc(encoder_cfg, idx, possible_crtc) { |
560 | if (possible_crtc == crtc_cfg) |
561 | return -EEXIST; |
562 | } |
563 | |
564 | return xa_alloc(xa: &encoder_cfg->possible_crtcs, id: &crtc_idx, entry: crtc_cfg, |
565 | xa_limit_32b, GFP_KERNEL); |
566 | } |
567 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_encoder_attach_crtc); |
568 | |
569 | void vkms_config_encoder_detach_crtc(struct vkms_config_encoder *encoder_cfg, |
570 | struct vkms_config_crtc *crtc_cfg) |
571 | { |
572 | struct vkms_config_crtc *possible_crtc; |
573 | unsigned long idx = 0; |
574 | |
575 | vkms_config_encoder_for_each_possible_crtc(encoder_cfg, idx, possible_crtc) { |
576 | if (possible_crtc == crtc_cfg) |
577 | xa_erase(&encoder_cfg->possible_crtcs, index: idx); |
578 | } |
579 | } |
580 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_encoder_detach_crtc); |
581 | |
582 | struct vkms_config_connector *vkms_config_create_connector(struct vkms_config *config) |
583 | { |
584 | struct vkms_config_connector *connector_cfg; |
585 | |
586 | connector_cfg = kzalloc(sizeof(*connector_cfg), GFP_KERNEL); |
587 | if (!connector_cfg) |
588 | return ERR_PTR(error: -ENOMEM); |
589 | |
590 | connector_cfg->config = config; |
591 | xa_init_flags(xa: &connector_cfg->possible_encoders, XA_FLAGS_ALLOC); |
592 | |
593 | list_add_tail(new: &connector_cfg->link, head: &config->connectors); |
594 | |
595 | return connector_cfg; |
596 | } |
597 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_create_connector); |
598 | |
599 | void vkms_config_destroy_connector(struct vkms_config_connector *connector_cfg) |
600 | { |
601 | xa_destroy(&connector_cfg->possible_encoders); |
602 | list_del(entry: &connector_cfg->link); |
603 | kfree(objp: connector_cfg); |
604 | } |
605 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_destroy_connector); |
606 | |
607 | int __must_check vkms_config_connector_attach_encoder(struct vkms_config_connector *connector_cfg, |
608 | struct vkms_config_encoder *encoder_cfg) |
609 | { |
610 | struct vkms_config_encoder *possible_encoder; |
611 | unsigned long idx = 0; |
612 | u32 encoder_idx = 0; |
613 | |
614 | if (connector_cfg->config != encoder_cfg->config) |
615 | return -EINVAL; |
616 | |
617 | vkms_config_connector_for_each_possible_encoder(connector_cfg, idx, |
618 | possible_encoder) { |
619 | if (possible_encoder == encoder_cfg) |
620 | return -EEXIST; |
621 | } |
622 | |
623 | return xa_alloc(xa: &connector_cfg->possible_encoders, id: &encoder_idx, |
624 | entry: encoder_cfg, xa_limit_32b, GFP_KERNEL); |
625 | } |
626 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_connector_attach_encoder); |
627 | |
628 | void vkms_config_connector_detach_encoder(struct vkms_config_connector *connector_cfg, |
629 | struct vkms_config_encoder *encoder_cfg) |
630 | { |
631 | struct vkms_config_encoder *possible_encoder; |
632 | unsigned long idx = 0; |
633 | |
634 | vkms_config_connector_for_each_possible_encoder(connector_cfg, idx, |
635 | possible_encoder) { |
636 | if (possible_encoder == encoder_cfg) |
637 | xa_erase(&connector_cfg->possible_encoders, index: idx); |
638 | } |
639 | } |
640 | EXPORT_SYMBOL_IF_KUNIT(vkms_config_connector_detach_encoder); |
641 |
Definitions
- vkms_config_create
- vkms_config_default_create
- vkms_config_destroy
- valid_plane_number
- valid_planes_for_crtc
- valid_plane_possible_crtcs
- valid_crtc_number
- valid_encoder_number
- valid_encoder_possible_crtcs
- valid_connector_number
- valid_connector_possible_encoders
- vkms_config_is_valid
- vkms_config_show
- vkms_config_debugfs_list
- vkms_config_register_debugfs
- vkms_config_create_plane
- vkms_config_destroy_plane
- vkms_config_plane_attach_crtc
- vkms_config_plane_detach_crtc
- vkms_config_create_crtc
- vkms_config_destroy_crtc
- vkms_config_crtc_get_plane
- vkms_config_crtc_primary_plane
- vkms_config_crtc_cursor_plane
- vkms_config_create_encoder
- vkms_config_destroy_encoder
- vkms_config_encoder_attach_crtc
- vkms_config_encoder_detach_crtc
- vkms_config_create_connector
- vkms_config_destroy_connector
- vkms_config_connector_attach_encoder
Improve your Profiling and Debugging skills
Find out more