Commit | Line | Data |
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43968d7b DV |
1 | /* |
2 | * Copyright (c) 2016 Intel Corporation | |
3 | * | |
4 | * Permission to use, copy, modify, distribute, and sell this software and its | |
5 | * documentation for any purpose is hereby granted without fee, provided that | |
6 | * the above copyright notice appear in all copies and that both that copyright | |
7 | * notice and this permission notice appear in supporting documentation, and | |
8 | * that the name of the copyright holders not be used in advertising or | |
9 | * publicity pertaining to distribution of the software without specific, | |
10 | * written prior permission. The copyright holders make no representations | |
11 | * about the suitability of this software for any purpose. It is provided "as | |
12 | * is" without express or implied warranty. | |
13 | * | |
14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
20 | * OF THIS SOFTWARE. | |
21 | */ | |
22 | ||
b88ac005 DV |
23 | #include <linux/slab.h> |
24 | #include <linux/uaccess.h> | |
25 | ||
43968d7b | 26 | #include <drm/drm_plane.h> |
b88ac005 DV |
27 | #include <drm/drm_drv.h> |
28 | #include <drm/drm_print.h> | |
29 | #include <drm/drm_framebuffer.h> | |
30 | #include <drm/drm_file.h> | |
31 | #include <drm/drm_crtc.h> | |
32 | #include <drm/drm_fourcc.h> | |
33 | #include <drm/drm_vblank.h> | |
43968d7b DV |
34 | |
35 | #include "drm_crtc_internal.h" | |
36 | ||
532b3671 DV |
37 | /** |
38 | * DOC: overview | |
39 | * | |
40 | * A plane represents an image source that can be blended with or overlayed on | |
41 | * top of a CRTC during the scanout process. Planes take their input data from a | |
42 | * &drm_framebuffer object. The plane itself specifies the cropping and scaling | |
43 | * of that image, and where it is placed on the visible are of a display | |
44 | * pipeline, represented by &drm_crtc. A plane can also have additional | |
45 | * properties that specify how the pixels are positioned and blended, like | |
46 | * rotation or Z-position. All these properties are stored in &drm_plane_state. | |
47 | * | |
48 | * To create a plane, a KMS drivers allocates and zeroes an instances of | |
ea0dd85a | 49 | * &struct drm_plane (possibly as part of a larger structure) and registers it |
532b3671 DV |
50 | * with a call to drm_universal_plane_init(). |
51 | * | |
52 | * Cursor and overlay planes are optional. All drivers should provide one | |
53 | * primary plane per CRTC to avoid surprising userspace too much. See enum | |
d574528a | 54 | * drm_plane_type for a more in-depth discussion of these special uapi-relevant |
532b3671 DV |
55 | * plane types. Special planes are associated with their CRTC by calling |
56 | * drm_crtc_init_with_planes(). | |
1e4d84c6 DV |
57 | * |
58 | * The type of a plane is exposed in the immutable "type" enumeration property, | |
59 | * which has one of the following values: "Overlay", "Primary", "Cursor". | |
532b3671 DV |
60 | */ |
61 | ||
43968d7b DV |
62 | static unsigned int drm_num_planes(struct drm_device *dev) |
63 | { | |
64 | unsigned int num = 0; | |
65 | struct drm_plane *tmp; | |
66 | ||
67 | drm_for_each_plane(tmp, dev) { | |
68 | num++; | |
69 | } | |
70 | ||
71 | return num; | |
72 | } | |
73 | ||
db1689aa BW |
74 | static inline u32 * |
75 | formats_ptr(struct drm_format_modifier_blob *blob) | |
76 | { | |
77 | return (u32 *)(((char *)blob) + blob->formats_offset); | |
78 | } | |
79 | ||
80 | static inline struct drm_format_modifier * | |
81 | modifiers_ptr(struct drm_format_modifier_blob *blob) | |
82 | { | |
83 | return (struct drm_format_modifier *)(((char *)blob) + blob->modifiers_offset); | |
84 | } | |
85 | ||
86 | static int create_in_format_blob(struct drm_device *dev, struct drm_plane *plane) | |
87 | { | |
88 | const struct drm_mode_config *config = &dev->mode_config; | |
89 | struct drm_property_blob *blob; | |
90 | struct drm_format_modifier *mod; | |
91 | size_t blob_size, formats_size, modifiers_size; | |
92 | struct drm_format_modifier_blob *blob_data; | |
93 | unsigned int i, j; | |
94 | ||
95 | formats_size = sizeof(__u32) * plane->format_count; | |
96 | if (WARN_ON(!formats_size)) { | |
97 | /* 0 formats are never expected */ | |
98 | return 0; | |
99 | } | |
100 | ||
101 | modifiers_size = | |
102 | sizeof(struct drm_format_modifier) * plane->modifier_count; | |
103 | ||
104 | blob_size = sizeof(struct drm_format_modifier_blob); | |
105 | /* Modifiers offset is a pointer to a struct with a 64 bit field so it | |
106 | * should be naturally aligned to 8B. | |
107 | */ | |
108 | BUILD_BUG_ON(sizeof(struct drm_format_modifier_blob) % 8); | |
109 | blob_size += ALIGN(formats_size, 8); | |
110 | blob_size += modifiers_size; | |
111 | ||
112 | blob = drm_property_create_blob(dev, blob_size, NULL); | |
113 | if (IS_ERR(blob)) | |
114 | return -1; | |
115 | ||
11b83e3f | 116 | blob_data = blob->data; |
db1689aa BW |
117 | blob_data->version = FORMAT_BLOB_CURRENT; |
118 | blob_data->count_formats = plane->format_count; | |
119 | blob_data->formats_offset = sizeof(struct drm_format_modifier_blob); | |
120 | blob_data->count_modifiers = plane->modifier_count; | |
121 | ||
122 | blob_data->modifiers_offset = | |
123 | ALIGN(blob_data->formats_offset + formats_size, 8); | |
124 | ||
125 | memcpy(formats_ptr(blob_data), plane->format_types, formats_size); | |
126 | ||
127 | /* If we can't determine support, just bail */ | |
128 | if (!plane->funcs->format_mod_supported) | |
129 | goto done; | |
130 | ||
131 | mod = modifiers_ptr(blob_data); | |
132 | for (i = 0; i < plane->modifier_count; i++) { | |
133 | for (j = 0; j < plane->format_count; j++) { | |
134 | if (plane->funcs->format_mod_supported(plane, | |
135 | plane->format_types[j], | |
136 | plane->modifiers[i])) { | |
137 | ||
aadd4148 | 138 | mod->formats |= 1ULL << j; |
db1689aa BW |
139 | } |
140 | } | |
141 | ||
142 | mod->modifier = plane->modifiers[i]; | |
143 | mod->offset = 0; | |
144 | mod->pad = 0; | |
145 | mod++; | |
146 | } | |
147 | ||
148 | done: | |
149 | drm_object_attach_property(&plane->base, config->modifiers_property, | |
150 | blob->base.id); | |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
43968d7b DV |
155 | /** |
156 | * drm_universal_plane_init - Initialize a new universal plane object | |
157 | * @dev: DRM device | |
158 | * @plane: plane object to init | |
159 | * @possible_crtcs: bitmask of possible CRTCs | |
160 | * @funcs: callbacks for the new plane | |
161 | * @formats: array of supported formats (DRM_FORMAT\_\*) | |
162 | * @format_count: number of elements in @formats | |
e6fc3b68 BW |
163 | * @format_modifiers: array of struct drm_format modifiers terminated by |
164 | * DRM_FORMAT_MOD_INVALID | |
43968d7b DV |
165 | * @type: type of plane (overlay, primary, cursor) |
166 | * @name: printf style format string for the plane name, or NULL for default name | |
167 | * | |
168 | * Initializes a plane object of type @type. | |
169 | * | |
170 | * Returns: | |
171 | * Zero on success, error code on failure. | |
172 | */ | |
173 | int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, | |
5cd57a46 | 174 | uint32_t possible_crtcs, |
43968d7b DV |
175 | const struct drm_plane_funcs *funcs, |
176 | const uint32_t *formats, unsigned int format_count, | |
e6fc3b68 | 177 | const uint64_t *format_modifiers, |
43968d7b DV |
178 | enum drm_plane_type type, |
179 | const char *name, ...) | |
180 | { | |
181 | struct drm_mode_config *config = &dev->mode_config; | |
e6fc3b68 | 182 | unsigned int format_modifier_count = 0; |
43968d7b DV |
183 | int ret; |
184 | ||
2a8d3eac VS |
185 | /* plane index is used with 32bit bitmasks */ |
186 | if (WARN_ON(config->num_total_plane >= 32)) | |
187 | return -EINVAL; | |
188 | ||
ba1f665f HM |
189 | WARN_ON(drm_drv_uses_atomic_modeset(dev) && |
190 | (!funcs->atomic_destroy_state || | |
191 | !funcs->atomic_duplicate_state)); | |
192 | ||
2135ea7a | 193 | ret = drm_mode_object_add(dev, &plane->base, DRM_MODE_OBJECT_PLANE); |
43968d7b DV |
194 | if (ret) |
195 | return ret; | |
196 | ||
197 | drm_modeset_lock_init(&plane->mutex); | |
198 | ||
199 | plane->base.properties = &plane->properties; | |
200 | plane->dev = dev; | |
201 | plane->funcs = funcs; | |
202 | plane->format_types = kmalloc_array(format_count, sizeof(uint32_t), | |
203 | GFP_KERNEL); | |
204 | if (!plane->format_types) { | |
205 | DRM_DEBUG_KMS("out of memory when allocating plane\n"); | |
206 | drm_mode_object_unregister(dev, &plane->base); | |
207 | return -ENOMEM; | |
208 | } | |
209 | ||
e6fc3b68 BW |
210 | /* |
211 | * First driver to need more than 64 formats needs to fix this. Each | |
212 | * format is encoded as a bit and the current code only supports a u64. | |
213 | */ | |
214 | if (WARN_ON(format_count > 64)) | |
215 | return -EINVAL; | |
216 | ||
217 | if (format_modifiers) { | |
218 | const uint64_t *temp_modifiers = format_modifiers; | |
219 | while (*temp_modifiers++ != DRM_FORMAT_MOD_INVALID) | |
220 | format_modifier_count++; | |
221 | } | |
222 | ||
223 | plane->modifier_count = format_modifier_count; | |
224 | plane->modifiers = kmalloc_array(format_modifier_count, | |
225 | sizeof(format_modifiers[0]), | |
226 | GFP_KERNEL); | |
227 | ||
228 | if (format_modifier_count && !plane->modifiers) { | |
229 | DRM_DEBUG_KMS("out of memory when allocating plane\n"); | |
230 | kfree(plane->format_types); | |
231 | drm_mode_object_unregister(dev, &plane->base); | |
232 | return -ENOMEM; | |
233 | } | |
234 | ||
43968d7b DV |
235 | if (name) { |
236 | va_list ap; | |
237 | ||
238 | va_start(ap, name); | |
239 | plane->name = kvasprintf(GFP_KERNEL, name, ap); | |
240 | va_end(ap); | |
241 | } else { | |
242 | plane->name = kasprintf(GFP_KERNEL, "plane-%d", | |
243 | drm_num_planes(dev)); | |
244 | } | |
245 | if (!plane->name) { | |
246 | kfree(plane->format_types); | |
e6fc3b68 | 247 | kfree(plane->modifiers); |
43968d7b DV |
248 | drm_mode_object_unregister(dev, &plane->base); |
249 | return -ENOMEM; | |
250 | } | |
251 | ||
252 | memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); | |
253 | plane->format_count = format_count; | |
e6fc3b68 BW |
254 | memcpy(plane->modifiers, format_modifiers, |
255 | format_modifier_count * sizeof(format_modifiers[0])); | |
43968d7b DV |
256 | plane->possible_crtcs = possible_crtcs; |
257 | plane->type = type; | |
258 | ||
259 | list_add_tail(&plane->head, &config->plane_list); | |
260 | plane->index = config->num_total_plane++; | |
43968d7b DV |
261 | |
262 | drm_object_attach_property(&plane->base, | |
263 | config->plane_type_property, | |
264 | plane->type); | |
265 | ||
266 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { | |
267 | drm_object_attach_property(&plane->base, config->prop_fb_id, 0); | |
96260142 | 268 | drm_object_attach_property(&plane->base, config->prop_in_fence_fd, -1); |
43968d7b DV |
269 | drm_object_attach_property(&plane->base, config->prop_crtc_id, 0); |
270 | drm_object_attach_property(&plane->base, config->prop_crtc_x, 0); | |
271 | drm_object_attach_property(&plane->base, config->prop_crtc_y, 0); | |
272 | drm_object_attach_property(&plane->base, config->prop_crtc_w, 0); | |
273 | drm_object_attach_property(&plane->base, config->prop_crtc_h, 0); | |
274 | drm_object_attach_property(&plane->base, config->prop_src_x, 0); | |
275 | drm_object_attach_property(&plane->base, config->prop_src_y, 0); | |
276 | drm_object_attach_property(&plane->base, config->prop_src_w, 0); | |
277 | drm_object_attach_property(&plane->base, config->prop_src_h, 0); | |
278 | } | |
279 | ||
db1689aa BW |
280 | if (config->allow_fb_modifiers) |
281 | create_in_format_blob(dev, plane); | |
282 | ||
43968d7b DV |
283 | return 0; |
284 | } | |
285 | EXPORT_SYMBOL(drm_universal_plane_init); | |
286 | ||
287 | int drm_plane_register_all(struct drm_device *dev) | |
288 | { | |
289 | struct drm_plane *plane; | |
290 | int ret = 0; | |
291 | ||
292 | drm_for_each_plane(plane, dev) { | |
293 | if (plane->funcs->late_register) | |
294 | ret = plane->funcs->late_register(plane); | |
295 | if (ret) | |
296 | return ret; | |
297 | } | |
298 | ||
299 | return 0; | |
300 | } | |
301 | ||
302 | void drm_plane_unregister_all(struct drm_device *dev) | |
303 | { | |
304 | struct drm_plane *plane; | |
305 | ||
306 | drm_for_each_plane(plane, dev) { | |
307 | if (plane->funcs->early_unregister) | |
308 | plane->funcs->early_unregister(plane); | |
309 | } | |
310 | } | |
311 | ||
312 | /** | |
313 | * drm_plane_init - Initialize a legacy plane | |
314 | * @dev: DRM device | |
315 | * @plane: plane object to init | |
316 | * @possible_crtcs: bitmask of possible CRTCs | |
317 | * @funcs: callbacks for the new plane | |
318 | * @formats: array of supported formats (DRM_FORMAT\_\*) | |
319 | * @format_count: number of elements in @formats | |
320 | * @is_primary: plane type (primary vs overlay) | |
321 | * | |
322 | * Legacy API to initialize a DRM plane. | |
323 | * | |
324 | * New drivers should call drm_universal_plane_init() instead. | |
325 | * | |
326 | * Returns: | |
327 | * Zero on success, error code on failure. | |
328 | */ | |
329 | int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, | |
5cd57a46 | 330 | uint32_t possible_crtcs, |
43968d7b DV |
331 | const struct drm_plane_funcs *funcs, |
332 | const uint32_t *formats, unsigned int format_count, | |
333 | bool is_primary) | |
334 | { | |
335 | enum drm_plane_type type; | |
336 | ||
337 | type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; | |
338 | return drm_universal_plane_init(dev, plane, possible_crtcs, funcs, | |
e6fc3b68 BW |
339 | formats, format_count, |
340 | NULL, type, NULL); | |
43968d7b DV |
341 | } |
342 | EXPORT_SYMBOL(drm_plane_init); | |
343 | ||
344 | /** | |
345 | * drm_plane_cleanup - Clean up the core plane usage | |
346 | * @plane: plane to cleanup | |
347 | * | |
348 | * This function cleans up @plane and removes it from the DRM mode setting | |
349 | * core. Note that the function does *not* free the plane structure itself, | |
350 | * this is the responsibility of the caller. | |
351 | */ | |
352 | void drm_plane_cleanup(struct drm_plane *plane) | |
353 | { | |
354 | struct drm_device *dev = plane->dev; | |
355 | ||
661a3755 DV |
356 | drm_modeset_lock_fini(&plane->mutex); |
357 | ||
43968d7b | 358 | kfree(plane->format_types); |
e6fc3b68 | 359 | kfree(plane->modifiers); |
43968d7b DV |
360 | drm_mode_object_unregister(dev, &plane->base); |
361 | ||
362 | BUG_ON(list_empty(&plane->head)); | |
363 | ||
364 | /* Note that the plane_list is considered to be static; should we | |
365 | * remove the drm_plane at runtime we would have to decrement all | |
366 | * the indices on the drm_plane after us in the plane_list. | |
367 | */ | |
368 | ||
369 | list_del(&plane->head); | |
370 | dev->mode_config.num_total_plane--; | |
43968d7b DV |
371 | |
372 | WARN_ON(plane->state && !plane->funcs->atomic_destroy_state); | |
373 | if (plane->state && plane->funcs->atomic_destroy_state) | |
374 | plane->funcs->atomic_destroy_state(plane, plane->state); | |
375 | ||
376 | kfree(plane->name); | |
377 | ||
378 | memset(plane, 0, sizeof(*plane)); | |
379 | } | |
380 | EXPORT_SYMBOL(drm_plane_cleanup); | |
381 | ||
382 | /** | |
383 | * drm_plane_from_index - find the registered plane at an index | |
384 | * @dev: DRM device | |
385 | * @idx: index of registered plane to find for | |
386 | * | |
387 | * Given a plane index, return the registered plane from DRM device's | |
931c670d | 388 | * list of planes with matching index. This is the inverse of drm_plane_index(). |
43968d7b DV |
389 | */ |
390 | struct drm_plane * | |
391 | drm_plane_from_index(struct drm_device *dev, int idx) | |
392 | { | |
393 | struct drm_plane *plane; | |
394 | ||
395 | drm_for_each_plane(plane, dev) | |
396 | if (idx == plane->index) | |
397 | return plane; | |
398 | ||
399 | return NULL; | |
400 | } | |
401 | EXPORT_SYMBOL(drm_plane_from_index); | |
402 | ||
403 | /** | |
404 | * drm_plane_force_disable - Forcibly disable a plane | |
405 | * @plane: plane to disable | |
406 | * | |
407 | * Forces the plane to be disabled. | |
408 | * | |
409 | * Used when the plane's current framebuffer is destroyed, | |
410 | * and when restoring fbdev mode. | |
5fbef3ee DV |
411 | * |
412 | * Note that this function is not suitable for atomic drivers, since it doesn't | |
413 | * wire through the lock acquisition context properly and hence can't handle | |
414 | * retries or driver private locks. You probably want to use | |
415 | * drm_atomic_helper_disable_plane() or | |
416 | * drm_atomic_helper_disable_planes_on_crtc() instead. | |
43968d7b DV |
417 | */ |
418 | void drm_plane_force_disable(struct drm_plane *plane) | |
419 | { | |
420 | int ret; | |
421 | ||
422 | if (!plane->fb) | |
423 | return; | |
424 | ||
5fbef3ee DV |
425 | WARN_ON(drm_drv_uses_atomic_modeset(plane->dev)); |
426 | ||
43968d7b | 427 | plane->old_fb = plane->fb; |
19315294 | 428 | ret = plane->funcs->disable_plane(plane, NULL); |
43968d7b DV |
429 | if (ret) { |
430 | DRM_ERROR("failed to disable plane with busy fb\n"); | |
431 | plane->old_fb = NULL; | |
432 | return; | |
433 | } | |
434 | /* disconnect the plane from the fb and crtc: */ | |
a4a69da0 | 435 | drm_framebuffer_put(plane->old_fb); |
43968d7b DV |
436 | plane->old_fb = NULL; |
437 | plane->fb = NULL; | |
438 | plane->crtc = NULL; | |
439 | } | |
440 | EXPORT_SYMBOL(drm_plane_force_disable); | |
441 | ||
442 | /** | |
443 | * drm_mode_plane_set_obj_prop - set the value of a property | |
444 | * @plane: drm plane object to set property value for | |
445 | * @property: property to set | |
446 | * @value: value the property should be set to | |
447 | * | |
448 | * This functions sets a given property on a given plane object. This function | |
449 | * calls the driver's ->set_property callback and changes the software state of | |
450 | * the property if the callback succeeds. | |
451 | * | |
452 | * Returns: | |
453 | * Zero on success, error code on failure. | |
454 | */ | |
455 | int drm_mode_plane_set_obj_prop(struct drm_plane *plane, | |
456 | struct drm_property *property, | |
457 | uint64_t value) | |
458 | { | |
459 | int ret = -EINVAL; | |
460 | struct drm_mode_object *obj = &plane->base; | |
461 | ||
462 | if (plane->funcs->set_property) | |
463 | ret = plane->funcs->set_property(plane, property, value); | |
464 | if (!ret) | |
465 | drm_object_property_set_value(obj, property, value); | |
466 | ||
467 | return ret; | |
468 | } | |
469 | EXPORT_SYMBOL(drm_mode_plane_set_obj_prop); | |
470 | ||
43968d7b DV |
471 | int drm_mode_getplane_res(struct drm_device *dev, void *data, |
472 | struct drm_file *file_priv) | |
473 | { | |
474 | struct drm_mode_get_plane_res *plane_resp = data; | |
43968d7b DV |
475 | struct drm_plane *plane; |
476 | uint32_t __user *plane_ptr; | |
40d86701 | 477 | int count = 0; |
43968d7b DV |
478 | |
479 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 480 | return -EOPNOTSUPP; |
43968d7b | 481 | |
40d86701 | 482 | plane_ptr = u64_to_user_ptr(plane_resp->plane_id_ptr); |
43968d7b DV |
483 | |
484 | /* | |
485 | * This ioctl is called twice, once to determine how much space is | |
486 | * needed, and the 2nd time to fill it. | |
487 | */ | |
40d86701 DA |
488 | drm_for_each_plane(plane, dev) { |
489 | /* | |
490 | * Unless userspace set the 'universal planes' | |
491 | * capability bit, only advertise overlays. | |
492 | */ | |
493 | if (plane->type != DRM_PLANE_TYPE_OVERLAY && | |
494 | !file_priv->universal_planes) | |
495 | continue; | |
496 | ||
7de440db KP |
497 | if (drm_lease_held(file_priv, plane->base.id)) { |
498 | if (count < plane_resp->count_planes && | |
499 | put_user(plane->base.id, plane_ptr + count)) | |
500 | return -EFAULT; | |
501 | count++; | |
502 | } | |
43968d7b | 503 | } |
40d86701 | 504 | plane_resp->count_planes = count; |
43968d7b DV |
505 | |
506 | return 0; | |
507 | } | |
508 | ||
43968d7b DV |
509 | int drm_mode_getplane(struct drm_device *dev, void *data, |
510 | struct drm_file *file_priv) | |
511 | { | |
512 | struct drm_mode_get_plane *plane_resp = data; | |
513 | struct drm_plane *plane; | |
514 | uint32_t __user *format_ptr; | |
515 | ||
516 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 517 | return -EOPNOTSUPP; |
43968d7b | 518 | |
418da172 | 519 | plane = drm_plane_find(dev, file_priv, plane_resp->plane_id); |
43968d7b DV |
520 | if (!plane) |
521 | return -ENOENT; | |
522 | ||
523 | drm_modeset_lock(&plane->mutex, NULL); | |
7de440db | 524 | if (plane->state && plane->state->crtc && drm_lease_held(file_priv, plane->state->crtc->base.id)) |
de7b6be7 | 525 | plane_resp->crtc_id = plane->state->crtc->base.id; |
7de440db | 526 | else if (!plane->state && plane->crtc && drm_lease_held(file_priv, plane->crtc->base.id)) |
43968d7b DV |
527 | plane_resp->crtc_id = plane->crtc->base.id; |
528 | else | |
529 | plane_resp->crtc_id = 0; | |
530 | ||
de7b6be7 DS |
531 | if (plane->state && plane->state->fb) |
532 | plane_resp->fb_id = plane->state->fb->base.id; | |
533 | else if (!plane->state && plane->fb) | |
43968d7b DV |
534 | plane_resp->fb_id = plane->fb->base.id; |
535 | else | |
536 | plane_resp->fb_id = 0; | |
537 | drm_modeset_unlock(&plane->mutex); | |
538 | ||
539 | plane_resp->plane_id = plane->base.id; | |
7de440db KP |
540 | plane_resp->possible_crtcs = drm_lease_filter_crtcs(file_priv, |
541 | plane->possible_crtcs); | |
542 | ||
43968d7b DV |
543 | plane_resp->gamma_size = 0; |
544 | ||
545 | /* | |
546 | * This ioctl is called twice, once to determine how much space is | |
547 | * needed, and the 2nd time to fill it. | |
548 | */ | |
549 | if (plane->format_count && | |
550 | (plane_resp->count_format_types >= plane->format_count)) { | |
551 | format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; | |
552 | if (copy_to_user(format_ptr, | |
553 | plane->format_types, | |
554 | sizeof(uint32_t) * plane->format_count)) { | |
555 | return -EFAULT; | |
556 | } | |
557 | } | |
558 | plane_resp->count_format_types = plane->format_count; | |
559 | ||
560 | return 0; | |
561 | } | |
562 | ||
23163a7d VS |
563 | int drm_plane_check_pixel_format(struct drm_plane *plane, |
564 | u32 format, u64 modifier) | |
43968d7b DV |
565 | { |
566 | unsigned int i; | |
567 | ||
568 | for (i = 0; i < plane->format_count; i++) { | |
569 | if (format == plane->format_types[i]) | |
23163a7d | 570 | break; |
43968d7b | 571 | } |
23163a7d VS |
572 | if (i == plane->format_count) |
573 | return -EINVAL; | |
574 | ||
8fb756df EA |
575 | if (plane->funcs->format_mod_supported) { |
576 | if (!plane->funcs->format_mod_supported(plane, format, modifier)) | |
577 | return -EINVAL; | |
578 | } else { | |
579 | if (!plane->modifier_count) | |
580 | return 0; | |
23163a7d | 581 | |
8fb756df EA |
582 | for (i = 0; i < plane->modifier_count; i++) { |
583 | if (modifier == plane->modifiers[i]) | |
584 | break; | |
585 | } | |
586 | if (i == plane->modifier_count) | |
587 | return -EINVAL; | |
23163a7d | 588 | } |
23163a7d VS |
589 | |
590 | return 0; | |
43968d7b DV |
591 | } |
592 | ||
4dd4677c VS |
593 | static int __setplane_check(struct drm_plane *plane, |
594 | struct drm_crtc *crtc, | |
595 | struct drm_framebuffer *fb, | |
596 | int32_t crtc_x, int32_t crtc_y, | |
597 | uint32_t crtc_w, uint32_t crtc_h, | |
598 | uint32_t src_x, uint32_t src_y, | |
599 | uint32_t src_w, uint32_t src_h) | |
600 | { | |
601 | int ret; | |
602 | ||
603 | /* Check whether this plane is usable on this CRTC */ | |
604 | if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { | |
605 | DRM_DEBUG_KMS("Invalid crtc for plane\n"); | |
606 | return -EINVAL; | |
607 | } | |
608 | ||
609 | /* Check whether this plane supports the fb pixel format. */ | |
610 | ret = drm_plane_check_pixel_format(plane, fb->format->format, | |
611 | fb->modifier); | |
612 | if (ret) { | |
613 | struct drm_format_name_buf format_name; | |
614 | ||
615 | DRM_DEBUG_KMS("Invalid pixel format %s, modifier 0x%llx\n", | |
616 | drm_get_format_name(fb->format->format, | |
617 | &format_name), | |
618 | fb->modifier); | |
619 | return ret; | |
620 | } | |
621 | ||
622 | /* Give drivers some help against integer overflows */ | |
623 | if (crtc_w > INT_MAX || | |
624 | crtc_x > INT_MAX - (int32_t) crtc_w || | |
625 | crtc_h > INT_MAX || | |
626 | crtc_y > INT_MAX - (int32_t) crtc_h) { | |
627 | DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", | |
628 | crtc_w, crtc_h, crtc_x, crtc_y); | |
629 | return -ERANGE; | |
630 | } | |
631 | ||
632 | ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb); | |
633 | if (ret) | |
634 | return ret; | |
635 | ||
636 | return 0; | |
637 | } | |
638 | ||
43968d7b | 639 | /* |
ce0769e0 | 640 | * __setplane_internal - setplane handler for internal callers |
43968d7b | 641 | * |
ce0769e0 ML |
642 | * This function will take a reference on the new fb for the plane |
643 | * on success. | |
43968d7b DV |
644 | * |
645 | * src_{x,y,w,h} are provided in 16.16 fixed point format | |
646 | */ | |
647 | static int __setplane_internal(struct drm_plane *plane, | |
648 | struct drm_crtc *crtc, | |
649 | struct drm_framebuffer *fb, | |
650 | int32_t crtc_x, int32_t crtc_y, | |
651 | uint32_t crtc_w, uint32_t crtc_h, | |
652 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
653 | uint32_t src_x, uint32_t src_y, | |
232e8f70 DV |
654 | uint32_t src_w, uint32_t src_h, |
655 | struct drm_modeset_acquire_ctx *ctx) | |
43968d7b DV |
656 | { |
657 | int ret = 0; | |
658 | ||
e7695eb6 VS |
659 | WARN_ON(drm_drv_uses_atomic_modeset(plane->dev)); |
660 | ||
43968d7b DV |
661 | /* No fb means shut it down */ |
662 | if (!fb) { | |
663 | plane->old_fb = plane->fb; | |
19315294 | 664 | ret = plane->funcs->disable_plane(plane, ctx); |
43968d7b DV |
665 | if (!ret) { |
666 | plane->crtc = NULL; | |
667 | plane->fb = NULL; | |
668 | } else { | |
669 | plane->old_fb = NULL; | |
670 | } | |
671 | goto out; | |
672 | } | |
673 | ||
4dd4677c VS |
674 | ret = __setplane_check(plane, crtc, fb, |
675 | crtc_x, crtc_y, crtc_w, crtc_h, | |
676 | src_x, src_y, src_w, src_h); | |
43968d7b DV |
677 | if (ret) |
678 | goto out; | |
679 | ||
680 | plane->old_fb = plane->fb; | |
681 | ret = plane->funcs->update_plane(plane, crtc, fb, | |
682 | crtc_x, crtc_y, crtc_w, crtc_h, | |
34a2ab5e | 683 | src_x, src_y, src_w, src_h, ctx); |
43968d7b | 684 | if (!ret) { |
e7695eb6 VS |
685 | plane->crtc = crtc; |
686 | plane->fb = fb; | |
687 | drm_framebuffer_get(plane->fb); | |
43968d7b DV |
688 | } else { |
689 | plane->old_fb = NULL; | |
690 | } | |
691 | ||
692 | out: | |
43968d7b | 693 | if (plane->old_fb) |
a4a69da0 | 694 | drm_framebuffer_put(plane->old_fb); |
43968d7b DV |
695 | plane->old_fb = NULL; |
696 | ||
697 | return ret; | |
698 | } | |
699 | ||
e7695eb6 VS |
700 | static int __setplane_atomic(struct drm_plane *plane, |
701 | struct drm_crtc *crtc, | |
702 | struct drm_framebuffer *fb, | |
703 | int32_t crtc_x, int32_t crtc_y, | |
704 | uint32_t crtc_w, uint32_t crtc_h, | |
705 | uint32_t src_x, uint32_t src_y, | |
706 | uint32_t src_w, uint32_t src_h, | |
707 | struct drm_modeset_acquire_ctx *ctx) | |
708 | { | |
709 | int ret; | |
710 | ||
711 | WARN_ON(!drm_drv_uses_atomic_modeset(plane->dev)); | |
712 | ||
713 | /* No fb means shut it down */ | |
714 | if (!fb) | |
715 | return plane->funcs->disable_plane(plane, ctx); | |
716 | ||
717 | /* | |
718 | * FIXME: This is redundant with drm_atomic_plane_check(), | |
719 | * but the legacy cursor/"async" .update_plane() tricks | |
720 | * don't call that so we still need this here. Should remove | |
721 | * this when all .update_plane() implementations have been | |
722 | * fixed to call drm_atomic_plane_check(). | |
723 | */ | |
724 | ret = __setplane_check(plane, crtc, fb, | |
725 | crtc_x, crtc_y, crtc_w, crtc_h, | |
726 | src_x, src_y, src_w, src_h); | |
727 | if (ret) | |
728 | return ret; | |
729 | ||
730 | return plane->funcs->update_plane(plane, crtc, fb, | |
731 | crtc_x, crtc_y, crtc_w, crtc_h, | |
732 | src_x, src_y, src_w, src_h, ctx); | |
733 | } | |
734 | ||
43968d7b DV |
735 | static int setplane_internal(struct drm_plane *plane, |
736 | struct drm_crtc *crtc, | |
737 | struct drm_framebuffer *fb, | |
738 | int32_t crtc_x, int32_t crtc_y, | |
739 | uint32_t crtc_w, uint32_t crtc_h, | |
740 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
741 | uint32_t src_x, uint32_t src_y, | |
742 | uint32_t src_w, uint32_t src_h) | |
743 | { | |
232e8f70 | 744 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
745 | int ret; |
746 | ||
13736ba3 | 747 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
232e8f70 DV |
748 | retry: |
749 | ret = drm_modeset_lock_all_ctx(plane->dev, &ctx); | |
750 | if (ret) | |
751 | goto fail; | |
e7695eb6 VS |
752 | |
753 | if (drm_drv_uses_atomic_modeset(plane->dev)) | |
754 | ret = __setplane_atomic(plane, crtc, fb, | |
755 | crtc_x, crtc_y, crtc_w, crtc_h, | |
756 | src_x, src_y, src_w, src_h, &ctx); | |
757 | else | |
758 | ret = __setplane_internal(plane, crtc, fb, | |
759 | crtc_x, crtc_y, crtc_w, crtc_h, | |
760 | src_x, src_y, src_w, src_h, &ctx); | |
232e8f70 DV |
761 | |
762 | fail: | |
763 | if (ret == -EDEADLK) { | |
13736ba3 ML |
764 | ret = drm_modeset_backoff(&ctx); |
765 | if (!ret) | |
766 | goto retry; | |
232e8f70 DV |
767 | } |
768 | drm_modeset_drop_locks(&ctx); | |
769 | drm_modeset_acquire_fini(&ctx); | |
43968d7b DV |
770 | |
771 | return ret; | |
772 | } | |
773 | ||
43968d7b DV |
774 | int drm_mode_setplane(struct drm_device *dev, void *data, |
775 | struct drm_file *file_priv) | |
776 | { | |
777 | struct drm_mode_set_plane *plane_req = data; | |
778 | struct drm_plane *plane; | |
779 | struct drm_crtc *crtc = NULL; | |
780 | struct drm_framebuffer *fb = NULL; | |
ce0769e0 | 781 | int ret; |
43968d7b DV |
782 | |
783 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 784 | return -EOPNOTSUPP; |
43968d7b DV |
785 | |
786 | /* | |
787 | * First, find the plane, crtc, and fb objects. If not available, | |
788 | * we don't bother to call the driver. | |
789 | */ | |
418da172 | 790 | plane = drm_plane_find(dev, file_priv, plane_req->plane_id); |
43968d7b DV |
791 | if (!plane) { |
792 | DRM_DEBUG_KMS("Unknown plane ID %d\n", | |
793 | plane_req->plane_id); | |
794 | return -ENOENT; | |
795 | } | |
796 | ||
797 | if (plane_req->fb_id) { | |
418da172 | 798 | fb = drm_framebuffer_lookup(dev, file_priv, plane_req->fb_id); |
43968d7b DV |
799 | if (!fb) { |
800 | DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", | |
801 | plane_req->fb_id); | |
802 | return -ENOENT; | |
803 | } | |
804 | ||
418da172 | 805 | crtc = drm_crtc_find(dev, file_priv, plane_req->crtc_id); |
43968d7b | 806 | if (!crtc) { |
491ab470 | 807 | drm_framebuffer_put(fb); |
43968d7b DV |
808 | DRM_DEBUG_KMS("Unknown crtc ID %d\n", |
809 | plane_req->crtc_id); | |
810 | return -ENOENT; | |
811 | } | |
812 | } | |
813 | ||
ce0769e0 ML |
814 | ret = setplane_internal(plane, crtc, fb, |
815 | plane_req->crtc_x, plane_req->crtc_y, | |
816 | plane_req->crtc_w, plane_req->crtc_h, | |
817 | plane_req->src_x, plane_req->src_y, | |
818 | plane_req->src_w, plane_req->src_h); | |
819 | ||
820 | if (fb) | |
821 | drm_framebuffer_put(fb); | |
822 | ||
823 | return ret; | |
43968d7b DV |
824 | } |
825 | ||
43968d7b DV |
826 | static int drm_mode_cursor_universal(struct drm_crtc *crtc, |
827 | struct drm_mode_cursor2 *req, | |
b95ff031 DV |
828 | struct drm_file *file_priv, |
829 | struct drm_modeset_acquire_ctx *ctx) | |
43968d7b DV |
830 | { |
831 | struct drm_device *dev = crtc->dev; | |
64c32b49 | 832 | struct drm_plane *plane = crtc->cursor; |
43968d7b DV |
833 | struct drm_framebuffer *fb = NULL; |
834 | struct drm_mode_fb_cmd2 fbreq = { | |
835 | .width = req->width, | |
836 | .height = req->height, | |
837 | .pixel_format = DRM_FORMAT_ARGB8888, | |
838 | .pitches = { req->width * 4 }, | |
839 | .handles = { req->handle }, | |
840 | }; | |
841 | int32_t crtc_x, crtc_y; | |
842 | uint32_t crtc_w = 0, crtc_h = 0; | |
843 | uint32_t src_w = 0, src_h = 0; | |
844 | int ret = 0; | |
845 | ||
64c32b49 VS |
846 | BUG_ON(!plane); |
847 | WARN_ON(plane->crtc != crtc && plane->crtc != NULL); | |
43968d7b DV |
848 | |
849 | /* | |
850 | * Obtain fb we'll be using (either new or existing) and take an extra | |
851 | * reference to it if fb != null. setplane will take care of dropping | |
852 | * the reference if the plane update fails. | |
853 | */ | |
854 | if (req->flags & DRM_MODE_CURSOR_BO) { | |
855 | if (req->handle) { | |
856 | fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv); | |
857 | if (IS_ERR(fb)) { | |
858 | DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n"); | |
859 | return PTR_ERR(fb); | |
860 | } | |
bf2d5eb9 | 861 | |
43968d7b DV |
862 | fb->hot_x = req->hot_x; |
863 | fb->hot_y = req->hot_y; | |
864 | } else { | |
865 | fb = NULL; | |
866 | } | |
867 | } else { | |
a36c027d VS |
868 | if (plane->state) |
869 | fb = plane->state->fb; | |
870 | else | |
871 | fb = plane->fb; | |
872 | ||
43968d7b | 873 | if (fb) |
a4a69da0 | 874 | drm_framebuffer_get(fb); |
43968d7b DV |
875 | } |
876 | ||
877 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
878 | crtc_x = req->x; | |
879 | crtc_y = req->y; | |
880 | } else { | |
881 | crtc_x = crtc->cursor_x; | |
882 | crtc_y = crtc->cursor_y; | |
883 | } | |
884 | ||
885 | if (fb) { | |
886 | crtc_w = fb->width; | |
887 | crtc_h = fb->height; | |
888 | src_w = fb->width << 16; | |
889 | src_h = fb->height << 16; | |
890 | } | |
891 | ||
e7695eb6 VS |
892 | if (drm_drv_uses_atomic_modeset(dev)) |
893 | ret = __setplane_atomic(plane, crtc, fb, | |
894 | crtc_x, crtc_y, crtc_w, crtc_h, | |
895 | 0, 0, src_w, src_h, ctx); | |
896 | else | |
897 | ret = __setplane_internal(plane, crtc, fb, | |
898 | crtc_x, crtc_y, crtc_w, crtc_h, | |
899 | 0, 0, src_w, src_h, ctx); | |
ce0769e0 ML |
900 | |
901 | if (fb) | |
902 | drm_framebuffer_put(fb); | |
43968d7b DV |
903 | |
904 | /* Update successful; save new cursor position, if necessary */ | |
905 | if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) { | |
906 | crtc->cursor_x = req->x; | |
907 | crtc->cursor_y = req->y; | |
908 | } | |
909 | ||
910 | return ret; | |
911 | } | |
912 | ||
913 | static int drm_mode_cursor_common(struct drm_device *dev, | |
914 | struct drm_mode_cursor2 *req, | |
915 | struct drm_file *file_priv) | |
916 | { | |
917 | struct drm_crtc *crtc; | |
b95ff031 | 918 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
919 | int ret = 0; |
920 | ||
921 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 922 | return -EOPNOTSUPP; |
43968d7b DV |
923 | |
924 | if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) | |
925 | return -EINVAL; | |
926 | ||
418da172 | 927 | crtc = drm_crtc_find(dev, file_priv, req->crtc_id); |
43968d7b DV |
928 | if (!crtc) { |
929 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); | |
930 | return -ENOENT; | |
931 | } | |
932 | ||
6c886e4a | 933 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
b95ff031 DV |
934 | retry: |
935 | ret = drm_modeset_lock(&crtc->mutex, &ctx); | |
936 | if (ret) | |
937 | goto out; | |
43968d7b DV |
938 | /* |
939 | * If this crtc has a universal cursor plane, call that plane's update | |
940 | * handler rather than using legacy cursor handlers. | |
941 | */ | |
b95ff031 | 942 | if (crtc->cursor) { |
2e064163 DV |
943 | ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx); |
944 | if (ret) | |
945 | goto out; | |
946 | ||
b95ff031 DV |
947 | ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx); |
948 | goto out; | |
949 | } | |
43968d7b DV |
950 | |
951 | if (req->flags & DRM_MODE_CURSOR_BO) { | |
952 | if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) { | |
953 | ret = -ENXIO; | |
954 | goto out; | |
955 | } | |
956 | /* Turns off the cursor if handle is 0 */ | |
957 | if (crtc->funcs->cursor_set2) | |
958 | ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle, | |
959 | req->width, req->height, req->hot_x, req->hot_y); | |
960 | else | |
961 | ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, | |
962 | req->width, req->height); | |
963 | } | |
964 | ||
965 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
966 | if (crtc->funcs->cursor_move) { | |
967 | ret = crtc->funcs->cursor_move(crtc, req->x, req->y); | |
968 | } else { | |
969 | ret = -EFAULT; | |
970 | goto out; | |
971 | } | |
972 | } | |
973 | out: | |
b95ff031 | 974 | if (ret == -EDEADLK) { |
6c886e4a ML |
975 | ret = drm_modeset_backoff(&ctx); |
976 | if (!ret) | |
977 | goto retry; | |
b95ff031 DV |
978 | } |
979 | ||
980 | drm_modeset_drop_locks(&ctx); | |
981 | drm_modeset_acquire_fini(&ctx); | |
43968d7b DV |
982 | |
983 | return ret; | |
984 | ||
985 | } | |
986 | ||
987 | ||
43968d7b DV |
988 | int drm_mode_cursor_ioctl(struct drm_device *dev, |
989 | void *data, struct drm_file *file_priv) | |
990 | { | |
991 | struct drm_mode_cursor *req = data; | |
992 | struct drm_mode_cursor2 new_req; | |
993 | ||
994 | memcpy(&new_req, req, sizeof(struct drm_mode_cursor)); | |
995 | new_req.hot_x = new_req.hot_y = 0; | |
996 | ||
997 | return drm_mode_cursor_common(dev, &new_req, file_priv); | |
998 | } | |
999 | ||
532b3671 | 1000 | /* |
43968d7b DV |
1001 | * Set the cursor configuration based on user request. This implements the 2nd |
1002 | * version of the cursor ioctl, which allows userspace to additionally specify | |
1003 | * the hotspot of the pointer. | |
43968d7b DV |
1004 | */ |
1005 | int drm_mode_cursor2_ioctl(struct drm_device *dev, | |
1006 | void *data, struct drm_file *file_priv) | |
1007 | { | |
1008 | struct drm_mode_cursor2 *req = data; | |
1009 | ||
1010 | return drm_mode_cursor_common(dev, req, file_priv); | |
1011 | } | |
1012 | ||
43968d7b DV |
1013 | int drm_mode_page_flip_ioctl(struct drm_device *dev, |
1014 | void *data, struct drm_file *file_priv) | |
1015 | { | |
1016 | struct drm_mode_crtc_page_flip_target *page_flip = data; | |
1017 | struct drm_crtc *crtc; | |
64c32b49 | 1018 | struct drm_plane *plane; |
a36c027d | 1019 | struct drm_framebuffer *fb = NULL, *old_fb; |
43968d7b DV |
1020 | struct drm_pending_vblank_event *e = NULL; |
1021 | u32 target_vblank = page_flip->sequence; | |
29dc0d1d | 1022 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
1023 | int ret = -EINVAL; |
1024 | ||
1025 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 1026 | return -EOPNOTSUPP; |
43968d7b DV |
1027 | |
1028 | if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS) | |
1029 | return -EINVAL; | |
1030 | ||
1031 | if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) | |
1032 | return -EINVAL; | |
1033 | ||
1034 | /* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags | |
1035 | * can be specified | |
1036 | */ | |
1037 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET) | |
1038 | return -EINVAL; | |
1039 | ||
1040 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip) | |
1041 | return -EINVAL; | |
1042 | ||
418da172 | 1043 | crtc = drm_crtc_find(dev, file_priv, page_flip->crtc_id); |
43968d7b DV |
1044 | if (!crtc) |
1045 | return -ENOENT; | |
1046 | ||
64c32b49 VS |
1047 | plane = crtc->primary; |
1048 | ||
2adb29b1 DV |
1049 | if (crtc->funcs->page_flip_target) { |
1050 | u32 current_vblank; | |
1051 | int r; | |
1052 | ||
1053 | r = drm_crtc_vblank_get(crtc); | |
1054 | if (r) | |
1055 | return r; | |
1056 | ||
f4c0468e | 1057 | current_vblank = (u32)drm_crtc_vblank_count(crtc); |
2adb29b1 DV |
1058 | |
1059 | switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) { | |
1060 | case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE: | |
1061 | if ((int)(target_vblank - current_vblank) > 1) { | |
1062 | DRM_DEBUG("Invalid absolute flip target %u, " | |
1063 | "must be <= %u\n", target_vblank, | |
1064 | current_vblank + 1); | |
1065 | drm_crtc_vblank_put(crtc); | |
1066 | return -EINVAL; | |
1067 | } | |
1068 | break; | |
1069 | case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE: | |
1070 | if (target_vblank != 0 && target_vblank != 1) { | |
1071 | DRM_DEBUG("Invalid relative flip target %u, " | |
1072 | "must be 0 or 1\n", target_vblank); | |
1073 | drm_crtc_vblank_put(crtc); | |
1074 | return -EINVAL; | |
1075 | } | |
1076 | target_vblank += current_vblank; | |
1077 | break; | |
1078 | default: | |
1079 | target_vblank = current_vblank + | |
1080 | !(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC); | |
1081 | break; | |
1082 | } | |
1083 | } else if (crtc->funcs->page_flip == NULL || | |
1084 | (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) { | |
1085 | return -EINVAL; | |
1086 | } | |
1087 | ||
c2e4ff34 | 1088 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
29dc0d1d DV |
1089 | retry: |
1090 | ret = drm_modeset_lock(&crtc->mutex, &ctx); | |
1091 | if (ret) | |
1092 | goto out; | |
64c32b49 | 1093 | ret = drm_modeset_lock(&plane->mutex, &ctx); |
29dc0d1d DV |
1094 | if (ret) |
1095 | goto out; | |
29dc0d1d | 1096 | |
a36c027d VS |
1097 | if (plane->state) |
1098 | old_fb = plane->state->fb; | |
1099 | else | |
1100 | old_fb = plane->fb; | |
1101 | ||
1102 | if (old_fb == NULL) { | |
43968d7b DV |
1103 | /* The framebuffer is currently unbound, presumably |
1104 | * due to a hotplug event, that userspace has not | |
1105 | * yet discovered. | |
1106 | */ | |
1107 | ret = -EBUSY; | |
1108 | goto out; | |
1109 | } | |
1110 | ||
418da172 | 1111 | fb = drm_framebuffer_lookup(dev, file_priv, page_flip->fb_id); |
43968d7b DV |
1112 | if (!fb) { |
1113 | ret = -ENOENT; | |
1114 | goto out; | |
1115 | } | |
1116 | ||
a36c027d | 1117 | if (plane->state) { |
64c32b49 | 1118 | const struct drm_plane_state *state = plane->state; |
43968d7b DV |
1119 | |
1120 | ret = drm_framebuffer_check_src_coords(state->src_x, | |
1121 | state->src_y, | |
1122 | state->src_w, | |
1123 | state->src_h, | |
1124 | fb); | |
1125 | } else { | |
bf2d5eb9 VS |
1126 | ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, |
1127 | &crtc->mode, fb); | |
43968d7b DV |
1128 | } |
1129 | if (ret) | |
1130 | goto out; | |
1131 | ||
a36c027d | 1132 | if (old_fb->format != fb->format) { |
43968d7b DV |
1133 | DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); |
1134 | ret = -EINVAL; | |
1135 | goto out; | |
1136 | } | |
1137 | ||
1138 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
1139 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
1140 | if (!e) { | |
1141 | ret = -ENOMEM; | |
1142 | goto out; | |
1143 | } | |
bf2d5eb9 | 1144 | |
43968d7b DV |
1145 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; |
1146 | e->event.base.length = sizeof(e->event); | |
bd386e51 | 1147 | e->event.vbl.user_data = page_flip->user_data; |
b8a3365a | 1148 | e->event.vbl.crtc_id = crtc->base.id; |
bf2d5eb9 | 1149 | |
43968d7b DV |
1150 | ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base); |
1151 | if (ret) { | |
1152 | kfree(e); | |
031e5896 | 1153 | e = NULL; |
43968d7b DV |
1154 | goto out; |
1155 | } | |
1156 | } | |
1157 | ||
64c32b49 | 1158 | plane->old_fb = plane->fb; |
43968d7b DV |
1159 | if (crtc->funcs->page_flip_target) |
1160 | ret = crtc->funcs->page_flip_target(crtc, fb, e, | |
1161 | page_flip->flags, | |
41292b1f DV |
1162 | target_vblank, |
1163 | &ctx); | |
43968d7b | 1164 | else |
41292b1f DV |
1165 | ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags, |
1166 | &ctx); | |
43968d7b DV |
1167 | if (ret) { |
1168 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) | |
1169 | drm_event_cancel_free(dev, &e->base); | |
1170 | /* Keep the old fb, don't unref it. */ | |
64c32b49 | 1171 | plane->old_fb = NULL; |
43968d7b | 1172 | } else { |
e00fb856 VS |
1173 | if (!plane->state) { |
1174 | plane->fb = fb; | |
1175 | drm_framebuffer_get(fb); | |
1176 | } | |
43968d7b DV |
1177 | } |
1178 | ||
1179 | out: | |
e86fa21b | 1180 | if (fb) |
a4a69da0 | 1181 | drm_framebuffer_put(fb); |
64c32b49 VS |
1182 | if (plane->old_fb) |
1183 | drm_framebuffer_put(plane->old_fb); | |
1184 | plane->old_fb = NULL; | |
29dc0d1d DV |
1185 | |
1186 | if (ret == -EDEADLK) { | |
c2e4ff34 ML |
1187 | ret = drm_modeset_backoff(&ctx); |
1188 | if (!ret) | |
1189 | goto retry; | |
29dc0d1d DV |
1190 | } |
1191 | ||
1192 | drm_modeset_drop_locks(&ctx); | |
1193 | drm_modeset_acquire_fini(&ctx); | |
43968d7b | 1194 | |
f9285434 DV |
1195 | if (ret && crtc->funcs->page_flip_target) |
1196 | drm_crtc_vblank_put(crtc); | |
1197 | ||
43968d7b DV |
1198 | return ret; |
1199 | } |