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; | |
948de842 | 219 | |
e6fc3b68 BW |
220 | while (*temp_modifiers++ != DRM_FORMAT_MOD_INVALID) |
221 | format_modifier_count++; | |
222 | } | |
223 | ||
890880dd PK |
224 | if (format_modifier_count) |
225 | config->allow_fb_modifiers = true; | |
226 | ||
e6fc3b68 BW |
227 | plane->modifier_count = format_modifier_count; |
228 | plane->modifiers = kmalloc_array(format_modifier_count, | |
229 | sizeof(format_modifiers[0]), | |
230 | GFP_KERNEL); | |
231 | ||
232 | if (format_modifier_count && !plane->modifiers) { | |
233 | DRM_DEBUG_KMS("out of memory when allocating plane\n"); | |
234 | kfree(plane->format_types); | |
235 | drm_mode_object_unregister(dev, &plane->base); | |
236 | return -ENOMEM; | |
237 | } | |
238 | ||
43968d7b DV |
239 | if (name) { |
240 | va_list ap; | |
241 | ||
242 | va_start(ap, name); | |
243 | plane->name = kvasprintf(GFP_KERNEL, name, ap); | |
244 | va_end(ap); | |
245 | } else { | |
246 | plane->name = kasprintf(GFP_KERNEL, "plane-%d", | |
247 | drm_num_planes(dev)); | |
248 | } | |
249 | if (!plane->name) { | |
250 | kfree(plane->format_types); | |
e6fc3b68 | 251 | kfree(plane->modifiers); |
43968d7b DV |
252 | drm_mode_object_unregister(dev, &plane->base); |
253 | return -ENOMEM; | |
254 | } | |
255 | ||
256 | memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); | |
257 | plane->format_count = format_count; | |
e6fc3b68 BW |
258 | memcpy(plane->modifiers, format_modifiers, |
259 | format_modifier_count * sizeof(format_modifiers[0])); | |
43968d7b DV |
260 | plane->possible_crtcs = possible_crtcs; |
261 | plane->type = type; | |
262 | ||
263 | list_add_tail(&plane->head, &config->plane_list); | |
264 | plane->index = config->num_total_plane++; | |
43968d7b DV |
265 | |
266 | drm_object_attach_property(&plane->base, | |
267 | config->plane_type_property, | |
268 | plane->type); | |
269 | ||
270 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { | |
271 | drm_object_attach_property(&plane->base, config->prop_fb_id, 0); | |
96260142 | 272 | drm_object_attach_property(&plane->base, config->prop_in_fence_fd, -1); |
43968d7b DV |
273 | drm_object_attach_property(&plane->base, config->prop_crtc_id, 0); |
274 | drm_object_attach_property(&plane->base, config->prop_crtc_x, 0); | |
275 | drm_object_attach_property(&plane->base, config->prop_crtc_y, 0); | |
276 | drm_object_attach_property(&plane->base, config->prop_crtc_w, 0); | |
277 | drm_object_attach_property(&plane->base, config->prop_crtc_h, 0); | |
278 | drm_object_attach_property(&plane->base, config->prop_src_x, 0); | |
279 | drm_object_attach_property(&plane->base, config->prop_src_y, 0); | |
280 | drm_object_attach_property(&plane->base, config->prop_src_w, 0); | |
281 | drm_object_attach_property(&plane->base, config->prop_src_h, 0); | |
282 | } | |
283 | ||
db1689aa BW |
284 | if (config->allow_fb_modifiers) |
285 | create_in_format_blob(dev, plane); | |
286 | ||
43968d7b DV |
287 | return 0; |
288 | } | |
289 | EXPORT_SYMBOL(drm_universal_plane_init); | |
290 | ||
291 | int drm_plane_register_all(struct drm_device *dev) | |
292 | { | |
4dc55525 LP |
293 | unsigned int num_planes = 0; |
294 | unsigned int num_zpos = 0; | |
43968d7b DV |
295 | struct drm_plane *plane; |
296 | int ret = 0; | |
297 | ||
298 | drm_for_each_plane(plane, dev) { | |
299 | if (plane->funcs->late_register) | |
300 | ret = plane->funcs->late_register(plane); | |
301 | if (ret) | |
302 | return ret; | |
4dc55525 LP |
303 | |
304 | if (plane->zpos_property) | |
305 | num_zpos++; | |
306 | num_planes++; | |
43968d7b DV |
307 | } |
308 | ||
4dc55525 LP |
309 | drm_WARN(dev, num_zpos && num_planes != num_zpos, |
310 | "Mixing planes with and without zpos property is invalid\n"); | |
311 | ||
43968d7b DV |
312 | return 0; |
313 | } | |
314 | ||
315 | void drm_plane_unregister_all(struct drm_device *dev) | |
316 | { | |
317 | struct drm_plane *plane; | |
318 | ||
319 | drm_for_each_plane(plane, dev) { | |
320 | if (plane->funcs->early_unregister) | |
321 | plane->funcs->early_unregister(plane); | |
322 | } | |
323 | } | |
324 | ||
325 | /** | |
326 | * drm_plane_init - Initialize a legacy plane | |
327 | * @dev: DRM device | |
328 | * @plane: plane object to init | |
329 | * @possible_crtcs: bitmask of possible CRTCs | |
330 | * @funcs: callbacks for the new plane | |
331 | * @formats: array of supported formats (DRM_FORMAT\_\*) | |
332 | * @format_count: number of elements in @formats | |
333 | * @is_primary: plane type (primary vs overlay) | |
334 | * | |
335 | * Legacy API to initialize a DRM plane. | |
336 | * | |
337 | * New drivers should call drm_universal_plane_init() instead. | |
338 | * | |
339 | * Returns: | |
340 | * Zero on success, error code on failure. | |
341 | */ | |
342 | int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, | |
5cd57a46 | 343 | uint32_t possible_crtcs, |
43968d7b DV |
344 | const struct drm_plane_funcs *funcs, |
345 | const uint32_t *formats, unsigned int format_count, | |
346 | bool is_primary) | |
347 | { | |
348 | enum drm_plane_type type; | |
349 | ||
350 | type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; | |
351 | return drm_universal_plane_init(dev, plane, possible_crtcs, funcs, | |
e6fc3b68 BW |
352 | formats, format_count, |
353 | NULL, type, NULL); | |
43968d7b DV |
354 | } |
355 | EXPORT_SYMBOL(drm_plane_init); | |
356 | ||
357 | /** | |
358 | * drm_plane_cleanup - Clean up the core plane usage | |
359 | * @plane: plane to cleanup | |
360 | * | |
361 | * This function cleans up @plane and removes it from the DRM mode setting | |
362 | * core. Note that the function does *not* free the plane structure itself, | |
363 | * this is the responsibility of the caller. | |
364 | */ | |
365 | void drm_plane_cleanup(struct drm_plane *plane) | |
366 | { | |
367 | struct drm_device *dev = plane->dev; | |
368 | ||
661a3755 DV |
369 | drm_modeset_lock_fini(&plane->mutex); |
370 | ||
43968d7b | 371 | kfree(plane->format_types); |
e6fc3b68 | 372 | kfree(plane->modifiers); |
43968d7b DV |
373 | drm_mode_object_unregister(dev, &plane->base); |
374 | ||
375 | BUG_ON(list_empty(&plane->head)); | |
376 | ||
377 | /* Note that the plane_list is considered to be static; should we | |
378 | * remove the drm_plane at runtime we would have to decrement all | |
379 | * the indices on the drm_plane after us in the plane_list. | |
380 | */ | |
381 | ||
382 | list_del(&plane->head); | |
383 | dev->mode_config.num_total_plane--; | |
43968d7b DV |
384 | |
385 | WARN_ON(plane->state && !plane->funcs->atomic_destroy_state); | |
386 | if (plane->state && plane->funcs->atomic_destroy_state) | |
387 | plane->funcs->atomic_destroy_state(plane, plane->state); | |
388 | ||
389 | kfree(plane->name); | |
390 | ||
391 | memset(plane, 0, sizeof(*plane)); | |
392 | } | |
393 | EXPORT_SYMBOL(drm_plane_cleanup); | |
394 | ||
395 | /** | |
396 | * drm_plane_from_index - find the registered plane at an index | |
397 | * @dev: DRM device | |
398 | * @idx: index of registered plane to find for | |
399 | * | |
400 | * Given a plane index, return the registered plane from DRM device's | |
931c670d | 401 | * list of planes with matching index. This is the inverse of drm_plane_index(). |
43968d7b DV |
402 | */ |
403 | struct drm_plane * | |
404 | drm_plane_from_index(struct drm_device *dev, int idx) | |
405 | { | |
406 | struct drm_plane *plane; | |
407 | ||
408 | drm_for_each_plane(plane, dev) | |
409 | if (idx == plane->index) | |
410 | return plane; | |
411 | ||
412 | return NULL; | |
413 | } | |
414 | EXPORT_SYMBOL(drm_plane_from_index); | |
415 | ||
416 | /** | |
417 | * drm_plane_force_disable - Forcibly disable a plane | |
418 | * @plane: plane to disable | |
419 | * | |
420 | * Forces the plane to be disabled. | |
421 | * | |
422 | * Used when the plane's current framebuffer is destroyed, | |
423 | * and when restoring fbdev mode. | |
5fbef3ee DV |
424 | * |
425 | * Note that this function is not suitable for atomic drivers, since it doesn't | |
426 | * wire through the lock acquisition context properly and hence can't handle | |
427 | * retries or driver private locks. You probably want to use | |
428 | * drm_atomic_helper_disable_plane() or | |
429 | * drm_atomic_helper_disable_planes_on_crtc() instead. | |
43968d7b DV |
430 | */ |
431 | void drm_plane_force_disable(struct drm_plane *plane) | |
432 | { | |
433 | int ret; | |
434 | ||
435 | if (!plane->fb) | |
436 | return; | |
437 | ||
5fbef3ee DV |
438 | WARN_ON(drm_drv_uses_atomic_modeset(plane->dev)); |
439 | ||
43968d7b | 440 | plane->old_fb = plane->fb; |
19315294 | 441 | ret = plane->funcs->disable_plane(plane, NULL); |
43968d7b DV |
442 | if (ret) { |
443 | DRM_ERROR("failed to disable plane with busy fb\n"); | |
444 | plane->old_fb = NULL; | |
445 | return; | |
446 | } | |
447 | /* disconnect the plane from the fb and crtc: */ | |
a4a69da0 | 448 | drm_framebuffer_put(plane->old_fb); |
43968d7b DV |
449 | plane->old_fb = NULL; |
450 | plane->fb = NULL; | |
451 | plane->crtc = NULL; | |
452 | } | |
453 | EXPORT_SYMBOL(drm_plane_force_disable); | |
454 | ||
455 | /** | |
456 | * drm_mode_plane_set_obj_prop - set the value of a property | |
457 | * @plane: drm plane object to set property value for | |
458 | * @property: property to set | |
459 | * @value: value the property should be set to | |
460 | * | |
461 | * This functions sets a given property on a given plane object. This function | |
462 | * calls the driver's ->set_property callback and changes the software state of | |
463 | * the property if the callback succeeds. | |
464 | * | |
465 | * Returns: | |
466 | * Zero on success, error code on failure. | |
467 | */ | |
468 | int drm_mode_plane_set_obj_prop(struct drm_plane *plane, | |
469 | struct drm_property *property, | |
470 | uint64_t value) | |
471 | { | |
472 | int ret = -EINVAL; | |
473 | struct drm_mode_object *obj = &plane->base; | |
474 | ||
475 | if (plane->funcs->set_property) | |
476 | ret = plane->funcs->set_property(plane, property, value); | |
477 | if (!ret) | |
478 | drm_object_property_set_value(obj, property, value); | |
479 | ||
480 | return ret; | |
481 | } | |
482 | EXPORT_SYMBOL(drm_mode_plane_set_obj_prop); | |
483 | ||
43968d7b DV |
484 | int drm_mode_getplane_res(struct drm_device *dev, void *data, |
485 | struct drm_file *file_priv) | |
486 | { | |
487 | struct drm_mode_get_plane_res *plane_resp = data; | |
43968d7b DV |
488 | struct drm_plane *plane; |
489 | uint32_t __user *plane_ptr; | |
40d86701 | 490 | int count = 0; |
43968d7b DV |
491 | |
492 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 493 | return -EOPNOTSUPP; |
43968d7b | 494 | |
40d86701 | 495 | plane_ptr = u64_to_user_ptr(plane_resp->plane_id_ptr); |
43968d7b DV |
496 | |
497 | /* | |
498 | * This ioctl is called twice, once to determine how much space is | |
499 | * needed, and the 2nd time to fill it. | |
500 | */ | |
40d86701 DA |
501 | drm_for_each_plane(plane, dev) { |
502 | /* | |
503 | * Unless userspace set the 'universal planes' | |
504 | * capability bit, only advertise overlays. | |
505 | */ | |
506 | if (plane->type != DRM_PLANE_TYPE_OVERLAY && | |
507 | !file_priv->universal_planes) | |
508 | continue; | |
509 | ||
7de440db KP |
510 | if (drm_lease_held(file_priv, plane->base.id)) { |
511 | if (count < plane_resp->count_planes && | |
512 | put_user(plane->base.id, plane_ptr + count)) | |
513 | return -EFAULT; | |
514 | count++; | |
515 | } | |
43968d7b | 516 | } |
40d86701 | 517 | plane_resp->count_planes = count; |
43968d7b DV |
518 | |
519 | return 0; | |
520 | } | |
521 | ||
43968d7b DV |
522 | int drm_mode_getplane(struct drm_device *dev, void *data, |
523 | struct drm_file *file_priv) | |
524 | { | |
525 | struct drm_mode_get_plane *plane_resp = data; | |
526 | struct drm_plane *plane; | |
527 | uint32_t __user *format_ptr; | |
528 | ||
529 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 530 | return -EOPNOTSUPP; |
43968d7b | 531 | |
418da172 | 532 | plane = drm_plane_find(dev, file_priv, plane_resp->plane_id); |
43968d7b DV |
533 | if (!plane) |
534 | return -ENOENT; | |
535 | ||
536 | drm_modeset_lock(&plane->mutex, NULL); | |
7de440db | 537 | if (plane->state && plane->state->crtc && drm_lease_held(file_priv, plane->state->crtc->base.id)) |
de7b6be7 | 538 | plane_resp->crtc_id = plane->state->crtc->base.id; |
7de440db | 539 | else if (!plane->state && plane->crtc && drm_lease_held(file_priv, plane->crtc->base.id)) |
43968d7b DV |
540 | plane_resp->crtc_id = plane->crtc->base.id; |
541 | else | |
542 | plane_resp->crtc_id = 0; | |
543 | ||
de7b6be7 DS |
544 | if (plane->state && plane->state->fb) |
545 | plane_resp->fb_id = plane->state->fb->base.id; | |
546 | else if (!plane->state && plane->fb) | |
43968d7b DV |
547 | plane_resp->fb_id = plane->fb->base.id; |
548 | else | |
549 | plane_resp->fb_id = 0; | |
550 | drm_modeset_unlock(&plane->mutex); | |
551 | ||
552 | plane_resp->plane_id = plane->base.id; | |
7de440db KP |
553 | plane_resp->possible_crtcs = drm_lease_filter_crtcs(file_priv, |
554 | plane->possible_crtcs); | |
555 | ||
43968d7b DV |
556 | plane_resp->gamma_size = 0; |
557 | ||
558 | /* | |
559 | * This ioctl is called twice, once to determine how much space is | |
560 | * needed, and the 2nd time to fill it. | |
561 | */ | |
562 | if (plane->format_count && | |
563 | (plane_resp->count_format_types >= plane->format_count)) { | |
564 | format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; | |
565 | if (copy_to_user(format_ptr, | |
566 | plane->format_types, | |
567 | sizeof(uint32_t) * plane->format_count)) { | |
568 | return -EFAULT; | |
569 | } | |
570 | } | |
571 | plane_resp->count_format_types = plane->format_count; | |
572 | ||
573 | return 0; | |
574 | } | |
575 | ||
23163a7d VS |
576 | int drm_plane_check_pixel_format(struct drm_plane *plane, |
577 | u32 format, u64 modifier) | |
43968d7b DV |
578 | { |
579 | unsigned int i; | |
580 | ||
581 | for (i = 0; i < plane->format_count; i++) { | |
582 | if (format == plane->format_types[i]) | |
23163a7d | 583 | break; |
43968d7b | 584 | } |
23163a7d VS |
585 | if (i == plane->format_count) |
586 | return -EINVAL; | |
587 | ||
8fb756df EA |
588 | if (plane->funcs->format_mod_supported) { |
589 | if (!plane->funcs->format_mod_supported(plane, format, modifier)) | |
590 | return -EINVAL; | |
591 | } else { | |
592 | if (!plane->modifier_count) | |
593 | return 0; | |
23163a7d | 594 | |
8fb756df EA |
595 | for (i = 0; i < plane->modifier_count; i++) { |
596 | if (modifier == plane->modifiers[i]) | |
597 | break; | |
598 | } | |
599 | if (i == plane->modifier_count) | |
600 | return -EINVAL; | |
23163a7d | 601 | } |
23163a7d VS |
602 | |
603 | return 0; | |
43968d7b DV |
604 | } |
605 | ||
4dd4677c VS |
606 | static int __setplane_check(struct drm_plane *plane, |
607 | struct drm_crtc *crtc, | |
608 | struct drm_framebuffer *fb, | |
609 | int32_t crtc_x, int32_t crtc_y, | |
610 | uint32_t crtc_w, uint32_t crtc_h, | |
611 | uint32_t src_x, uint32_t src_y, | |
612 | uint32_t src_w, uint32_t src_h) | |
613 | { | |
614 | int ret; | |
615 | ||
616 | /* Check whether this plane is usable on this CRTC */ | |
617 | if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { | |
618 | DRM_DEBUG_KMS("Invalid crtc for plane\n"); | |
619 | return -EINVAL; | |
620 | } | |
621 | ||
622 | /* Check whether this plane supports the fb pixel format. */ | |
623 | ret = drm_plane_check_pixel_format(plane, fb->format->format, | |
624 | fb->modifier); | |
625 | if (ret) { | |
626 | struct drm_format_name_buf format_name; | |
627 | ||
628 | DRM_DEBUG_KMS("Invalid pixel format %s, modifier 0x%llx\n", | |
629 | drm_get_format_name(fb->format->format, | |
630 | &format_name), | |
631 | fb->modifier); | |
632 | return ret; | |
633 | } | |
634 | ||
635 | /* Give drivers some help against integer overflows */ | |
636 | if (crtc_w > INT_MAX || | |
637 | crtc_x > INT_MAX - (int32_t) crtc_w || | |
638 | crtc_h > INT_MAX || | |
639 | crtc_y > INT_MAX - (int32_t) crtc_h) { | |
640 | DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", | |
641 | crtc_w, crtc_h, crtc_x, crtc_y); | |
642 | return -ERANGE; | |
643 | } | |
644 | ||
645 | ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb); | |
646 | if (ret) | |
647 | return ret; | |
648 | ||
649 | return 0; | |
650 | } | |
651 | ||
e7afb623 VS |
652 | /** |
653 | * drm_any_plane_has_format - Check whether any plane supports this format and modifier combination | |
654 | * @dev: DRM device | |
655 | * @format: pixel format (DRM_FORMAT_*) | |
656 | * @modifier: data layout modifier | |
657 | * | |
658 | * Returns: | |
659 | * Whether at least one plane supports the specified format and modifier combination. | |
660 | */ | |
661 | bool drm_any_plane_has_format(struct drm_device *dev, | |
662 | u32 format, u64 modifier) | |
663 | { | |
664 | struct drm_plane *plane; | |
665 | ||
666 | drm_for_each_plane(plane, dev) { | |
667 | if (drm_plane_check_pixel_format(plane, format, modifier) == 0) | |
668 | return true; | |
669 | } | |
670 | ||
671 | return false; | |
672 | } | |
673 | EXPORT_SYMBOL(drm_any_plane_has_format); | |
674 | ||
43968d7b | 675 | /* |
ce0769e0 | 676 | * __setplane_internal - setplane handler for internal callers |
43968d7b | 677 | * |
ce0769e0 ML |
678 | * This function will take a reference on the new fb for the plane |
679 | * on success. | |
43968d7b DV |
680 | * |
681 | * src_{x,y,w,h} are provided in 16.16 fixed point format | |
682 | */ | |
683 | static int __setplane_internal(struct drm_plane *plane, | |
684 | struct drm_crtc *crtc, | |
685 | struct drm_framebuffer *fb, | |
686 | int32_t crtc_x, int32_t crtc_y, | |
687 | uint32_t crtc_w, uint32_t crtc_h, | |
688 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
689 | uint32_t src_x, uint32_t src_y, | |
232e8f70 DV |
690 | uint32_t src_w, uint32_t src_h, |
691 | struct drm_modeset_acquire_ctx *ctx) | |
43968d7b DV |
692 | { |
693 | int ret = 0; | |
694 | ||
e7695eb6 VS |
695 | WARN_ON(drm_drv_uses_atomic_modeset(plane->dev)); |
696 | ||
43968d7b DV |
697 | /* No fb means shut it down */ |
698 | if (!fb) { | |
699 | plane->old_fb = plane->fb; | |
19315294 | 700 | ret = plane->funcs->disable_plane(plane, ctx); |
43968d7b DV |
701 | if (!ret) { |
702 | plane->crtc = NULL; | |
703 | plane->fb = NULL; | |
704 | } else { | |
705 | plane->old_fb = NULL; | |
706 | } | |
707 | goto out; | |
708 | } | |
709 | ||
4dd4677c VS |
710 | ret = __setplane_check(plane, crtc, fb, |
711 | crtc_x, crtc_y, crtc_w, crtc_h, | |
712 | src_x, src_y, src_w, src_h); | |
43968d7b DV |
713 | if (ret) |
714 | goto out; | |
715 | ||
716 | plane->old_fb = plane->fb; | |
717 | ret = plane->funcs->update_plane(plane, crtc, fb, | |
718 | crtc_x, crtc_y, crtc_w, crtc_h, | |
34a2ab5e | 719 | src_x, src_y, src_w, src_h, ctx); |
43968d7b | 720 | if (!ret) { |
e7695eb6 VS |
721 | plane->crtc = crtc; |
722 | plane->fb = fb; | |
723 | drm_framebuffer_get(plane->fb); | |
43968d7b DV |
724 | } else { |
725 | plane->old_fb = NULL; | |
726 | } | |
727 | ||
728 | out: | |
43968d7b | 729 | if (plane->old_fb) |
a4a69da0 | 730 | drm_framebuffer_put(plane->old_fb); |
43968d7b DV |
731 | plane->old_fb = NULL; |
732 | ||
733 | return ret; | |
734 | } | |
735 | ||
e7695eb6 VS |
736 | static int __setplane_atomic(struct drm_plane *plane, |
737 | struct drm_crtc *crtc, | |
738 | struct drm_framebuffer *fb, | |
739 | int32_t crtc_x, int32_t crtc_y, | |
740 | uint32_t crtc_w, uint32_t crtc_h, | |
741 | uint32_t src_x, uint32_t src_y, | |
742 | uint32_t src_w, uint32_t src_h, | |
743 | struct drm_modeset_acquire_ctx *ctx) | |
744 | { | |
745 | int ret; | |
746 | ||
747 | WARN_ON(!drm_drv_uses_atomic_modeset(plane->dev)); | |
748 | ||
749 | /* No fb means shut it down */ | |
750 | if (!fb) | |
751 | return plane->funcs->disable_plane(plane, ctx); | |
752 | ||
753 | /* | |
754 | * FIXME: This is redundant with drm_atomic_plane_check(), | |
755 | * but the legacy cursor/"async" .update_plane() tricks | |
756 | * don't call that so we still need this here. Should remove | |
757 | * this when all .update_plane() implementations have been | |
758 | * fixed to call drm_atomic_plane_check(). | |
759 | */ | |
760 | ret = __setplane_check(plane, crtc, fb, | |
761 | crtc_x, crtc_y, crtc_w, crtc_h, | |
762 | src_x, src_y, src_w, src_h); | |
763 | if (ret) | |
764 | return ret; | |
765 | ||
766 | return plane->funcs->update_plane(plane, crtc, fb, | |
767 | crtc_x, crtc_y, crtc_w, crtc_h, | |
768 | src_x, src_y, src_w, src_h, ctx); | |
769 | } | |
770 | ||
43968d7b DV |
771 | static int setplane_internal(struct drm_plane *plane, |
772 | struct drm_crtc *crtc, | |
773 | struct drm_framebuffer *fb, | |
774 | int32_t crtc_x, int32_t crtc_y, | |
775 | uint32_t crtc_w, uint32_t crtc_h, | |
776 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
777 | uint32_t src_x, uint32_t src_y, | |
778 | uint32_t src_w, uint32_t src_h) | |
779 | { | |
232e8f70 | 780 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
781 | int ret; |
782 | ||
b7ea04d2 SP |
783 | DRM_MODESET_LOCK_ALL_BEGIN(plane->dev, ctx, |
784 | DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret); | |
e7695eb6 VS |
785 | |
786 | if (drm_drv_uses_atomic_modeset(plane->dev)) | |
787 | ret = __setplane_atomic(plane, crtc, fb, | |
788 | crtc_x, crtc_y, crtc_w, crtc_h, | |
789 | src_x, src_y, src_w, src_h, &ctx); | |
790 | else | |
791 | ret = __setplane_internal(plane, crtc, fb, | |
792 | crtc_x, crtc_y, crtc_w, crtc_h, | |
793 | src_x, src_y, src_w, src_h, &ctx); | |
232e8f70 | 794 | |
b7ea04d2 | 795 | DRM_MODESET_LOCK_ALL_END(ctx, ret); |
43968d7b DV |
796 | |
797 | return ret; | |
798 | } | |
799 | ||
43968d7b DV |
800 | int drm_mode_setplane(struct drm_device *dev, void *data, |
801 | struct drm_file *file_priv) | |
802 | { | |
803 | struct drm_mode_set_plane *plane_req = data; | |
804 | struct drm_plane *plane; | |
805 | struct drm_crtc *crtc = NULL; | |
806 | struct drm_framebuffer *fb = NULL; | |
ce0769e0 | 807 | int ret; |
43968d7b DV |
808 | |
809 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 810 | return -EOPNOTSUPP; |
43968d7b DV |
811 | |
812 | /* | |
813 | * First, find the plane, crtc, and fb objects. If not available, | |
814 | * we don't bother to call the driver. | |
815 | */ | |
418da172 | 816 | plane = drm_plane_find(dev, file_priv, plane_req->plane_id); |
43968d7b DV |
817 | if (!plane) { |
818 | DRM_DEBUG_KMS("Unknown plane ID %d\n", | |
819 | plane_req->plane_id); | |
820 | return -ENOENT; | |
821 | } | |
822 | ||
823 | if (plane_req->fb_id) { | |
418da172 | 824 | fb = drm_framebuffer_lookup(dev, file_priv, plane_req->fb_id); |
43968d7b DV |
825 | if (!fb) { |
826 | DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", | |
827 | plane_req->fb_id); | |
828 | return -ENOENT; | |
829 | } | |
830 | ||
418da172 | 831 | crtc = drm_crtc_find(dev, file_priv, plane_req->crtc_id); |
43968d7b | 832 | if (!crtc) { |
491ab470 | 833 | drm_framebuffer_put(fb); |
43968d7b DV |
834 | DRM_DEBUG_KMS("Unknown crtc ID %d\n", |
835 | plane_req->crtc_id); | |
836 | return -ENOENT; | |
837 | } | |
838 | } | |
839 | ||
ce0769e0 ML |
840 | ret = setplane_internal(plane, crtc, fb, |
841 | plane_req->crtc_x, plane_req->crtc_y, | |
842 | plane_req->crtc_w, plane_req->crtc_h, | |
843 | plane_req->src_x, plane_req->src_y, | |
844 | plane_req->src_w, plane_req->src_h); | |
845 | ||
846 | if (fb) | |
847 | drm_framebuffer_put(fb); | |
848 | ||
849 | return ret; | |
43968d7b DV |
850 | } |
851 | ||
43968d7b DV |
852 | static int drm_mode_cursor_universal(struct drm_crtc *crtc, |
853 | struct drm_mode_cursor2 *req, | |
b95ff031 DV |
854 | struct drm_file *file_priv, |
855 | struct drm_modeset_acquire_ctx *ctx) | |
43968d7b DV |
856 | { |
857 | struct drm_device *dev = crtc->dev; | |
64c32b49 | 858 | struct drm_plane *plane = crtc->cursor; |
43968d7b DV |
859 | struct drm_framebuffer *fb = NULL; |
860 | struct drm_mode_fb_cmd2 fbreq = { | |
861 | .width = req->width, | |
862 | .height = req->height, | |
863 | .pixel_format = DRM_FORMAT_ARGB8888, | |
864 | .pitches = { req->width * 4 }, | |
865 | .handles = { req->handle }, | |
866 | }; | |
867 | int32_t crtc_x, crtc_y; | |
868 | uint32_t crtc_w = 0, crtc_h = 0; | |
869 | uint32_t src_w = 0, src_h = 0; | |
870 | int ret = 0; | |
871 | ||
64c32b49 VS |
872 | BUG_ON(!plane); |
873 | WARN_ON(plane->crtc != crtc && plane->crtc != NULL); | |
43968d7b DV |
874 | |
875 | /* | |
876 | * Obtain fb we'll be using (either new or existing) and take an extra | |
877 | * reference to it if fb != null. setplane will take care of dropping | |
878 | * the reference if the plane update fails. | |
879 | */ | |
880 | if (req->flags & DRM_MODE_CURSOR_BO) { | |
881 | if (req->handle) { | |
882 | fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv); | |
883 | if (IS_ERR(fb)) { | |
884 | DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n"); | |
885 | return PTR_ERR(fb); | |
886 | } | |
bf2d5eb9 | 887 | |
43968d7b DV |
888 | fb->hot_x = req->hot_x; |
889 | fb->hot_y = req->hot_y; | |
890 | } else { | |
891 | fb = NULL; | |
892 | } | |
893 | } else { | |
a36c027d VS |
894 | if (plane->state) |
895 | fb = plane->state->fb; | |
896 | else | |
897 | fb = plane->fb; | |
898 | ||
43968d7b | 899 | if (fb) |
a4a69da0 | 900 | drm_framebuffer_get(fb); |
43968d7b DV |
901 | } |
902 | ||
903 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
904 | crtc_x = req->x; | |
905 | crtc_y = req->y; | |
906 | } else { | |
907 | crtc_x = crtc->cursor_x; | |
908 | crtc_y = crtc->cursor_y; | |
909 | } | |
910 | ||
911 | if (fb) { | |
912 | crtc_w = fb->width; | |
913 | crtc_h = fb->height; | |
914 | src_w = fb->width << 16; | |
915 | src_h = fb->height << 16; | |
916 | } | |
917 | ||
e7695eb6 VS |
918 | if (drm_drv_uses_atomic_modeset(dev)) |
919 | ret = __setplane_atomic(plane, crtc, fb, | |
920 | crtc_x, crtc_y, crtc_w, crtc_h, | |
921 | 0, 0, src_w, src_h, ctx); | |
922 | else | |
923 | ret = __setplane_internal(plane, crtc, fb, | |
924 | crtc_x, crtc_y, crtc_w, crtc_h, | |
925 | 0, 0, src_w, src_h, ctx); | |
ce0769e0 ML |
926 | |
927 | if (fb) | |
928 | drm_framebuffer_put(fb); | |
43968d7b DV |
929 | |
930 | /* Update successful; save new cursor position, if necessary */ | |
931 | if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) { | |
932 | crtc->cursor_x = req->x; | |
933 | crtc->cursor_y = req->y; | |
934 | } | |
935 | ||
936 | return ret; | |
937 | } | |
938 | ||
939 | static int drm_mode_cursor_common(struct drm_device *dev, | |
940 | struct drm_mode_cursor2 *req, | |
941 | struct drm_file *file_priv) | |
942 | { | |
943 | struct drm_crtc *crtc; | |
b95ff031 | 944 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
945 | int ret = 0; |
946 | ||
947 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 948 | return -EOPNOTSUPP; |
43968d7b DV |
949 | |
950 | if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) | |
951 | return -EINVAL; | |
952 | ||
418da172 | 953 | crtc = drm_crtc_find(dev, file_priv, req->crtc_id); |
43968d7b DV |
954 | if (!crtc) { |
955 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); | |
956 | return -ENOENT; | |
957 | } | |
958 | ||
6c886e4a | 959 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
b95ff031 DV |
960 | retry: |
961 | ret = drm_modeset_lock(&crtc->mutex, &ctx); | |
962 | if (ret) | |
963 | goto out; | |
43968d7b DV |
964 | /* |
965 | * If this crtc has a universal cursor plane, call that plane's update | |
966 | * handler rather than using legacy cursor handlers. | |
967 | */ | |
b95ff031 | 968 | if (crtc->cursor) { |
2e064163 DV |
969 | ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx); |
970 | if (ret) | |
971 | goto out; | |
972 | ||
204f640d DV |
973 | if (!drm_lease_held(file_priv, crtc->cursor->base.id)) { |
974 | ret = -EACCES; | |
975 | goto out; | |
976 | } | |
977 | ||
b95ff031 DV |
978 | ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx); |
979 | goto out; | |
980 | } | |
43968d7b DV |
981 | |
982 | if (req->flags & DRM_MODE_CURSOR_BO) { | |
983 | if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) { | |
984 | ret = -ENXIO; | |
985 | goto out; | |
986 | } | |
987 | /* Turns off the cursor if handle is 0 */ | |
988 | if (crtc->funcs->cursor_set2) | |
989 | ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle, | |
990 | req->width, req->height, req->hot_x, req->hot_y); | |
991 | else | |
992 | ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, | |
993 | req->width, req->height); | |
994 | } | |
995 | ||
996 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
997 | if (crtc->funcs->cursor_move) { | |
998 | ret = crtc->funcs->cursor_move(crtc, req->x, req->y); | |
999 | } else { | |
1000 | ret = -EFAULT; | |
1001 | goto out; | |
1002 | } | |
1003 | } | |
1004 | out: | |
b95ff031 | 1005 | if (ret == -EDEADLK) { |
6c886e4a ML |
1006 | ret = drm_modeset_backoff(&ctx); |
1007 | if (!ret) | |
1008 | goto retry; | |
b95ff031 DV |
1009 | } |
1010 | ||
1011 | drm_modeset_drop_locks(&ctx); | |
1012 | drm_modeset_acquire_fini(&ctx); | |
43968d7b DV |
1013 | |
1014 | return ret; | |
1015 | ||
1016 | } | |
1017 | ||
1018 | ||
43968d7b DV |
1019 | int drm_mode_cursor_ioctl(struct drm_device *dev, |
1020 | void *data, struct drm_file *file_priv) | |
1021 | { | |
1022 | struct drm_mode_cursor *req = data; | |
1023 | struct drm_mode_cursor2 new_req; | |
1024 | ||
1025 | memcpy(&new_req, req, sizeof(struct drm_mode_cursor)); | |
1026 | new_req.hot_x = new_req.hot_y = 0; | |
1027 | ||
1028 | return drm_mode_cursor_common(dev, &new_req, file_priv); | |
1029 | } | |
1030 | ||
532b3671 | 1031 | /* |
43968d7b DV |
1032 | * Set the cursor configuration based on user request. This implements the 2nd |
1033 | * version of the cursor ioctl, which allows userspace to additionally specify | |
1034 | * the hotspot of the pointer. | |
43968d7b DV |
1035 | */ |
1036 | int drm_mode_cursor2_ioctl(struct drm_device *dev, | |
1037 | void *data, struct drm_file *file_priv) | |
1038 | { | |
1039 | struct drm_mode_cursor2 *req = data; | |
1040 | ||
1041 | return drm_mode_cursor_common(dev, req, file_priv); | |
1042 | } | |
1043 | ||
43968d7b DV |
1044 | int drm_mode_page_flip_ioctl(struct drm_device *dev, |
1045 | void *data, struct drm_file *file_priv) | |
1046 | { | |
1047 | struct drm_mode_crtc_page_flip_target *page_flip = data; | |
1048 | struct drm_crtc *crtc; | |
64c32b49 | 1049 | struct drm_plane *plane; |
a36c027d | 1050 | struct drm_framebuffer *fb = NULL, *old_fb; |
43968d7b DV |
1051 | struct drm_pending_vblank_event *e = NULL; |
1052 | u32 target_vblank = page_flip->sequence; | |
29dc0d1d | 1053 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
1054 | int ret = -EINVAL; |
1055 | ||
1056 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 1057 | return -EOPNOTSUPP; |
43968d7b DV |
1058 | |
1059 | if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS) | |
1060 | return -EINVAL; | |
1061 | ||
1062 | if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) | |
1063 | return -EINVAL; | |
1064 | ||
1065 | /* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags | |
1066 | * can be specified | |
1067 | */ | |
1068 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET) | |
1069 | return -EINVAL; | |
1070 | ||
1071 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip) | |
1072 | return -EINVAL; | |
1073 | ||
418da172 | 1074 | crtc = drm_crtc_find(dev, file_priv, page_flip->crtc_id); |
43968d7b DV |
1075 | if (!crtc) |
1076 | return -ENOENT; | |
1077 | ||
64c32b49 VS |
1078 | plane = crtc->primary; |
1079 | ||
204f640d DV |
1080 | if (!drm_lease_held(file_priv, plane->base.id)) |
1081 | return -EACCES; | |
1082 | ||
2adb29b1 DV |
1083 | if (crtc->funcs->page_flip_target) { |
1084 | u32 current_vblank; | |
1085 | int r; | |
1086 | ||
1087 | r = drm_crtc_vblank_get(crtc); | |
1088 | if (r) | |
1089 | return r; | |
1090 | ||
f4c0468e | 1091 | current_vblank = (u32)drm_crtc_vblank_count(crtc); |
2adb29b1 DV |
1092 | |
1093 | switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) { | |
1094 | case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE: | |
1095 | if ((int)(target_vblank - current_vblank) > 1) { | |
1096 | DRM_DEBUG("Invalid absolute flip target %u, " | |
1097 | "must be <= %u\n", target_vblank, | |
1098 | current_vblank + 1); | |
1099 | drm_crtc_vblank_put(crtc); | |
1100 | return -EINVAL; | |
1101 | } | |
1102 | break; | |
1103 | case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE: | |
1104 | if (target_vblank != 0 && target_vblank != 1) { | |
1105 | DRM_DEBUG("Invalid relative flip target %u, " | |
1106 | "must be 0 or 1\n", target_vblank); | |
1107 | drm_crtc_vblank_put(crtc); | |
1108 | return -EINVAL; | |
1109 | } | |
1110 | target_vblank += current_vblank; | |
1111 | break; | |
1112 | default: | |
1113 | target_vblank = current_vblank + | |
1114 | !(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC); | |
1115 | break; | |
1116 | } | |
1117 | } else if (crtc->funcs->page_flip == NULL || | |
1118 | (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) { | |
1119 | return -EINVAL; | |
1120 | } | |
1121 | ||
c2e4ff34 | 1122 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
29dc0d1d DV |
1123 | retry: |
1124 | ret = drm_modeset_lock(&crtc->mutex, &ctx); | |
1125 | if (ret) | |
1126 | goto out; | |
64c32b49 | 1127 | ret = drm_modeset_lock(&plane->mutex, &ctx); |
29dc0d1d DV |
1128 | if (ret) |
1129 | goto out; | |
29dc0d1d | 1130 | |
a36c027d VS |
1131 | if (plane->state) |
1132 | old_fb = plane->state->fb; | |
1133 | else | |
1134 | old_fb = plane->fb; | |
1135 | ||
1136 | if (old_fb == NULL) { | |
43968d7b DV |
1137 | /* The framebuffer is currently unbound, presumably |
1138 | * due to a hotplug event, that userspace has not | |
1139 | * yet discovered. | |
1140 | */ | |
1141 | ret = -EBUSY; | |
1142 | goto out; | |
1143 | } | |
1144 | ||
418da172 | 1145 | fb = drm_framebuffer_lookup(dev, file_priv, page_flip->fb_id); |
43968d7b DV |
1146 | if (!fb) { |
1147 | ret = -ENOENT; | |
1148 | goto out; | |
1149 | } | |
1150 | ||
a36c027d | 1151 | if (plane->state) { |
64c32b49 | 1152 | const struct drm_plane_state *state = plane->state; |
43968d7b DV |
1153 | |
1154 | ret = drm_framebuffer_check_src_coords(state->src_x, | |
1155 | state->src_y, | |
1156 | state->src_w, | |
1157 | state->src_h, | |
1158 | fb); | |
1159 | } else { | |
bf2d5eb9 VS |
1160 | ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, |
1161 | &crtc->mode, fb); | |
43968d7b DV |
1162 | } |
1163 | if (ret) | |
1164 | goto out; | |
1165 | ||
a36c027d | 1166 | if (old_fb->format != fb->format) { |
43968d7b DV |
1167 | DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); |
1168 | ret = -EINVAL; | |
1169 | goto out; | |
1170 | } | |
1171 | ||
1172 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
1173 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
1174 | if (!e) { | |
1175 | ret = -ENOMEM; | |
1176 | goto out; | |
1177 | } | |
bf2d5eb9 | 1178 | |
43968d7b DV |
1179 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; |
1180 | e->event.base.length = sizeof(e->event); | |
bd386e51 | 1181 | e->event.vbl.user_data = page_flip->user_data; |
b8a3365a | 1182 | e->event.vbl.crtc_id = crtc->base.id; |
bf2d5eb9 | 1183 | |
43968d7b DV |
1184 | ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base); |
1185 | if (ret) { | |
1186 | kfree(e); | |
031e5896 | 1187 | e = NULL; |
43968d7b DV |
1188 | goto out; |
1189 | } | |
1190 | } | |
1191 | ||
64c32b49 | 1192 | plane->old_fb = plane->fb; |
43968d7b DV |
1193 | if (crtc->funcs->page_flip_target) |
1194 | ret = crtc->funcs->page_flip_target(crtc, fb, e, | |
1195 | page_flip->flags, | |
41292b1f DV |
1196 | target_vblank, |
1197 | &ctx); | |
43968d7b | 1198 | else |
41292b1f DV |
1199 | ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags, |
1200 | &ctx); | |
43968d7b DV |
1201 | if (ret) { |
1202 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) | |
1203 | drm_event_cancel_free(dev, &e->base); | |
1204 | /* Keep the old fb, don't unref it. */ | |
64c32b49 | 1205 | plane->old_fb = NULL; |
43968d7b | 1206 | } else { |
e00fb856 VS |
1207 | if (!plane->state) { |
1208 | plane->fb = fb; | |
1209 | drm_framebuffer_get(fb); | |
1210 | } | |
43968d7b DV |
1211 | } |
1212 | ||
1213 | out: | |
e86fa21b | 1214 | if (fb) |
a4a69da0 | 1215 | drm_framebuffer_put(fb); |
64c32b49 VS |
1216 | if (plane->old_fb) |
1217 | drm_framebuffer_put(plane->old_fb); | |
1218 | plane->old_fb = NULL; | |
29dc0d1d DV |
1219 | |
1220 | if (ret == -EDEADLK) { | |
c2e4ff34 ML |
1221 | ret = drm_modeset_backoff(&ctx); |
1222 | if (!ret) | |
1223 | goto retry; | |
29dc0d1d DV |
1224 | } |
1225 | ||
1226 | drm_modeset_drop_locks(&ctx); | |
1227 | drm_modeset_acquire_fini(&ctx); | |
43968d7b | 1228 | |
f9285434 DV |
1229 | if (ret && crtc->funcs->page_flip_target) |
1230 | drm_crtc_vblank_put(crtc); | |
1231 | ||
43968d7b DV |
1232 | return ret; |
1233 | } |