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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 | ||
23 | #include <drm/drmP.h> | |
24 | #include <drm/drm_plane.h> | |
25 | ||
26 | #include "drm_crtc_internal.h" | |
27 | ||
532b3671 DV |
28 | /** |
29 | * DOC: overview | |
30 | * | |
31 | * A plane represents an image source that can be blended with or overlayed on | |
32 | * top of a CRTC during the scanout process. Planes take their input data from a | |
33 | * &drm_framebuffer object. The plane itself specifies the cropping and scaling | |
34 | * of that image, and where it is placed on the visible are of a display | |
35 | * pipeline, represented by &drm_crtc. A plane can also have additional | |
36 | * properties that specify how the pixels are positioned and blended, like | |
37 | * rotation or Z-position. All these properties are stored in &drm_plane_state. | |
38 | * | |
39 | * To create a plane, a KMS drivers allocates and zeroes an instances of | |
ea0dd85a | 40 | * &struct drm_plane (possibly as part of a larger structure) and registers it |
532b3671 DV |
41 | * with a call to drm_universal_plane_init(). |
42 | * | |
43 | * Cursor and overlay planes are optional. All drivers should provide one | |
44 | * primary plane per CRTC to avoid surprising userspace too much. See enum | |
d574528a | 45 | * drm_plane_type for a more in-depth discussion of these special uapi-relevant |
532b3671 DV |
46 | * plane types. Special planes are associated with their CRTC by calling |
47 | * drm_crtc_init_with_planes(). | |
1e4d84c6 DV |
48 | * |
49 | * The type of a plane is exposed in the immutable "type" enumeration property, | |
50 | * which has one of the following values: "Overlay", "Primary", "Cursor". | |
532b3671 DV |
51 | */ |
52 | ||
43968d7b DV |
53 | static unsigned int drm_num_planes(struct drm_device *dev) |
54 | { | |
55 | unsigned int num = 0; | |
56 | struct drm_plane *tmp; | |
57 | ||
58 | drm_for_each_plane(tmp, dev) { | |
59 | num++; | |
60 | } | |
61 | ||
62 | return num; | |
63 | } | |
64 | ||
65 | /** | |
66 | * drm_universal_plane_init - Initialize a new universal plane object | |
67 | * @dev: DRM device | |
68 | * @plane: plane object to init | |
69 | * @possible_crtcs: bitmask of possible CRTCs | |
70 | * @funcs: callbacks for the new plane | |
71 | * @formats: array of supported formats (DRM_FORMAT\_\*) | |
72 | * @format_count: number of elements in @formats | |
73 | * @type: type of plane (overlay, primary, cursor) | |
74 | * @name: printf style format string for the plane name, or NULL for default name | |
75 | * | |
76 | * Initializes a plane object of type @type. | |
77 | * | |
78 | * Returns: | |
79 | * Zero on success, error code on failure. | |
80 | */ | |
81 | int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, | |
5cd57a46 | 82 | uint32_t possible_crtcs, |
43968d7b DV |
83 | const struct drm_plane_funcs *funcs, |
84 | const uint32_t *formats, unsigned int format_count, | |
85 | enum drm_plane_type type, | |
86 | const char *name, ...) | |
87 | { | |
88 | struct drm_mode_config *config = &dev->mode_config; | |
89 | int ret; | |
90 | ||
2135ea7a | 91 | ret = drm_mode_object_add(dev, &plane->base, DRM_MODE_OBJECT_PLANE); |
43968d7b DV |
92 | if (ret) |
93 | return ret; | |
94 | ||
95 | drm_modeset_lock_init(&plane->mutex); | |
96 | ||
97 | plane->base.properties = &plane->properties; | |
98 | plane->dev = dev; | |
99 | plane->funcs = funcs; | |
100 | plane->format_types = kmalloc_array(format_count, sizeof(uint32_t), | |
101 | GFP_KERNEL); | |
102 | if (!plane->format_types) { | |
103 | DRM_DEBUG_KMS("out of memory when allocating plane\n"); | |
104 | drm_mode_object_unregister(dev, &plane->base); | |
105 | return -ENOMEM; | |
106 | } | |
107 | ||
108 | if (name) { | |
109 | va_list ap; | |
110 | ||
111 | va_start(ap, name); | |
112 | plane->name = kvasprintf(GFP_KERNEL, name, ap); | |
113 | va_end(ap); | |
114 | } else { | |
115 | plane->name = kasprintf(GFP_KERNEL, "plane-%d", | |
116 | drm_num_planes(dev)); | |
117 | } | |
118 | if (!plane->name) { | |
119 | kfree(plane->format_types); | |
120 | drm_mode_object_unregister(dev, &plane->base); | |
121 | return -ENOMEM; | |
122 | } | |
123 | ||
124 | memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); | |
125 | plane->format_count = format_count; | |
126 | plane->possible_crtcs = possible_crtcs; | |
127 | plane->type = type; | |
128 | ||
129 | list_add_tail(&plane->head, &config->plane_list); | |
130 | plane->index = config->num_total_plane++; | |
131 | if (plane->type == DRM_PLANE_TYPE_OVERLAY) | |
132 | config->num_overlay_plane++; | |
133 | ||
134 | drm_object_attach_property(&plane->base, | |
135 | config->plane_type_property, | |
136 | plane->type); | |
137 | ||
138 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { | |
139 | drm_object_attach_property(&plane->base, config->prop_fb_id, 0); | |
96260142 | 140 | drm_object_attach_property(&plane->base, config->prop_in_fence_fd, -1); |
43968d7b DV |
141 | drm_object_attach_property(&plane->base, config->prop_crtc_id, 0); |
142 | drm_object_attach_property(&plane->base, config->prop_crtc_x, 0); | |
143 | drm_object_attach_property(&plane->base, config->prop_crtc_y, 0); | |
144 | drm_object_attach_property(&plane->base, config->prop_crtc_w, 0); | |
145 | drm_object_attach_property(&plane->base, config->prop_crtc_h, 0); | |
146 | drm_object_attach_property(&plane->base, config->prop_src_x, 0); | |
147 | drm_object_attach_property(&plane->base, config->prop_src_y, 0); | |
148 | drm_object_attach_property(&plane->base, config->prop_src_w, 0); | |
149 | drm_object_attach_property(&plane->base, config->prop_src_h, 0); | |
150 | } | |
151 | ||
152 | return 0; | |
153 | } | |
154 | EXPORT_SYMBOL(drm_universal_plane_init); | |
155 | ||
156 | int drm_plane_register_all(struct drm_device *dev) | |
157 | { | |
158 | struct drm_plane *plane; | |
159 | int ret = 0; | |
160 | ||
161 | drm_for_each_plane(plane, dev) { | |
162 | if (plane->funcs->late_register) | |
163 | ret = plane->funcs->late_register(plane); | |
164 | if (ret) | |
165 | return ret; | |
166 | } | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
171 | void drm_plane_unregister_all(struct drm_device *dev) | |
172 | { | |
173 | struct drm_plane *plane; | |
174 | ||
175 | drm_for_each_plane(plane, dev) { | |
176 | if (plane->funcs->early_unregister) | |
177 | plane->funcs->early_unregister(plane); | |
178 | } | |
179 | } | |
180 | ||
181 | /** | |
182 | * drm_plane_init - Initialize a legacy plane | |
183 | * @dev: DRM device | |
184 | * @plane: plane object to init | |
185 | * @possible_crtcs: bitmask of possible CRTCs | |
186 | * @funcs: callbacks for the new plane | |
187 | * @formats: array of supported formats (DRM_FORMAT\_\*) | |
188 | * @format_count: number of elements in @formats | |
189 | * @is_primary: plane type (primary vs overlay) | |
190 | * | |
191 | * Legacy API to initialize a DRM plane. | |
192 | * | |
193 | * New drivers should call drm_universal_plane_init() instead. | |
194 | * | |
195 | * Returns: | |
196 | * Zero on success, error code on failure. | |
197 | */ | |
198 | int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, | |
5cd57a46 | 199 | uint32_t possible_crtcs, |
43968d7b DV |
200 | const struct drm_plane_funcs *funcs, |
201 | const uint32_t *formats, unsigned int format_count, | |
202 | bool is_primary) | |
203 | { | |
204 | enum drm_plane_type type; | |
205 | ||
206 | type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; | |
207 | return drm_universal_plane_init(dev, plane, possible_crtcs, funcs, | |
208 | formats, format_count, type, NULL); | |
209 | } | |
210 | EXPORT_SYMBOL(drm_plane_init); | |
211 | ||
212 | /** | |
213 | * drm_plane_cleanup - Clean up the core plane usage | |
214 | * @plane: plane to cleanup | |
215 | * | |
216 | * This function cleans up @plane and removes it from the DRM mode setting | |
217 | * core. Note that the function does *not* free the plane structure itself, | |
218 | * this is the responsibility of the caller. | |
219 | */ | |
220 | void drm_plane_cleanup(struct drm_plane *plane) | |
221 | { | |
222 | struct drm_device *dev = plane->dev; | |
223 | ||
661a3755 DV |
224 | drm_modeset_lock_fini(&plane->mutex); |
225 | ||
43968d7b DV |
226 | kfree(plane->format_types); |
227 | drm_mode_object_unregister(dev, &plane->base); | |
228 | ||
229 | BUG_ON(list_empty(&plane->head)); | |
230 | ||
231 | /* Note that the plane_list is considered to be static; should we | |
232 | * remove the drm_plane at runtime we would have to decrement all | |
233 | * the indices on the drm_plane after us in the plane_list. | |
234 | */ | |
235 | ||
236 | list_del(&plane->head); | |
237 | dev->mode_config.num_total_plane--; | |
238 | if (plane->type == DRM_PLANE_TYPE_OVERLAY) | |
239 | dev->mode_config.num_overlay_plane--; | |
43968d7b DV |
240 | |
241 | WARN_ON(plane->state && !plane->funcs->atomic_destroy_state); | |
242 | if (plane->state && plane->funcs->atomic_destroy_state) | |
243 | plane->funcs->atomic_destroy_state(plane, plane->state); | |
244 | ||
245 | kfree(plane->name); | |
246 | ||
247 | memset(plane, 0, sizeof(*plane)); | |
248 | } | |
249 | EXPORT_SYMBOL(drm_plane_cleanup); | |
250 | ||
251 | /** | |
252 | * drm_plane_from_index - find the registered plane at an index | |
253 | * @dev: DRM device | |
254 | * @idx: index of registered plane to find for | |
255 | * | |
256 | * Given a plane index, return the registered plane from DRM device's | |
931c670d | 257 | * list of planes with matching index. This is the inverse of drm_plane_index(). |
43968d7b DV |
258 | */ |
259 | struct drm_plane * | |
260 | drm_plane_from_index(struct drm_device *dev, int idx) | |
261 | { | |
262 | struct drm_plane *plane; | |
263 | ||
264 | drm_for_each_plane(plane, dev) | |
265 | if (idx == plane->index) | |
266 | return plane; | |
267 | ||
268 | return NULL; | |
269 | } | |
270 | EXPORT_SYMBOL(drm_plane_from_index); | |
271 | ||
272 | /** | |
273 | * drm_plane_force_disable - Forcibly disable a plane | |
274 | * @plane: plane to disable | |
275 | * | |
276 | * Forces the plane to be disabled. | |
277 | * | |
278 | * Used when the plane's current framebuffer is destroyed, | |
279 | * and when restoring fbdev mode. | |
280 | */ | |
281 | void drm_plane_force_disable(struct drm_plane *plane) | |
282 | { | |
283 | int ret; | |
284 | ||
285 | if (!plane->fb) | |
286 | return; | |
287 | ||
288 | plane->old_fb = plane->fb; | |
289 | ret = plane->funcs->disable_plane(plane); | |
290 | if (ret) { | |
291 | DRM_ERROR("failed to disable plane with busy fb\n"); | |
292 | plane->old_fb = NULL; | |
293 | return; | |
294 | } | |
295 | /* disconnect the plane from the fb and crtc: */ | |
a4a69da0 | 296 | drm_framebuffer_put(plane->old_fb); |
43968d7b DV |
297 | plane->old_fb = NULL; |
298 | plane->fb = NULL; | |
299 | plane->crtc = NULL; | |
300 | } | |
301 | EXPORT_SYMBOL(drm_plane_force_disable); | |
302 | ||
303 | /** | |
304 | * drm_mode_plane_set_obj_prop - set the value of a property | |
305 | * @plane: drm plane object to set property value for | |
306 | * @property: property to set | |
307 | * @value: value the property should be set to | |
308 | * | |
309 | * This functions sets a given property on a given plane object. This function | |
310 | * calls the driver's ->set_property callback and changes the software state of | |
311 | * the property if the callback succeeds. | |
312 | * | |
313 | * Returns: | |
314 | * Zero on success, error code on failure. | |
315 | */ | |
316 | int drm_mode_plane_set_obj_prop(struct drm_plane *plane, | |
317 | struct drm_property *property, | |
318 | uint64_t value) | |
319 | { | |
320 | int ret = -EINVAL; | |
321 | struct drm_mode_object *obj = &plane->base; | |
322 | ||
323 | if (plane->funcs->set_property) | |
324 | ret = plane->funcs->set_property(plane, property, value); | |
325 | if (!ret) | |
326 | drm_object_property_set_value(obj, property, value); | |
327 | ||
328 | return ret; | |
329 | } | |
330 | EXPORT_SYMBOL(drm_mode_plane_set_obj_prop); | |
331 | ||
43968d7b DV |
332 | int drm_mode_getplane_res(struct drm_device *dev, void *data, |
333 | struct drm_file *file_priv) | |
334 | { | |
335 | struct drm_mode_get_plane_res *plane_resp = data; | |
336 | struct drm_mode_config *config; | |
337 | struct drm_plane *plane; | |
338 | uint32_t __user *plane_ptr; | |
339 | int copied = 0; | |
340 | unsigned num_planes; | |
341 | ||
342 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
343 | return -EINVAL; | |
344 | ||
345 | config = &dev->mode_config; | |
346 | ||
347 | if (file_priv->universal_planes) | |
348 | num_planes = config->num_total_plane; | |
349 | else | |
350 | num_planes = config->num_overlay_plane; | |
351 | ||
352 | /* | |
353 | * This ioctl is called twice, once to determine how much space is | |
354 | * needed, and the 2nd time to fill it. | |
355 | */ | |
356 | if (num_planes && | |
357 | (plane_resp->count_planes >= num_planes)) { | |
358 | plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; | |
359 | ||
360 | /* Plane lists are invariant, no locking needed. */ | |
361 | drm_for_each_plane(plane, dev) { | |
362 | /* | |
363 | * Unless userspace set the 'universal planes' | |
364 | * capability bit, only advertise overlays. | |
365 | */ | |
366 | if (plane->type != DRM_PLANE_TYPE_OVERLAY && | |
367 | !file_priv->universal_planes) | |
368 | continue; | |
369 | ||
370 | if (put_user(plane->base.id, plane_ptr + copied)) | |
371 | return -EFAULT; | |
372 | copied++; | |
373 | } | |
374 | } | |
375 | plane_resp->count_planes = num_planes; | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
43968d7b DV |
380 | int drm_mode_getplane(struct drm_device *dev, void *data, |
381 | struct drm_file *file_priv) | |
382 | { | |
383 | struct drm_mode_get_plane *plane_resp = data; | |
384 | struct drm_plane *plane; | |
385 | uint32_t __user *format_ptr; | |
386 | ||
387 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
388 | return -EINVAL; | |
389 | ||
390 | plane = drm_plane_find(dev, plane_resp->plane_id); | |
391 | if (!plane) | |
392 | return -ENOENT; | |
393 | ||
394 | drm_modeset_lock(&plane->mutex, NULL); | |
de7b6be7 DS |
395 | if (plane->state && plane->state->crtc) |
396 | plane_resp->crtc_id = plane->state->crtc->base.id; | |
397 | else if (!plane->state && plane->crtc) | |
43968d7b DV |
398 | plane_resp->crtc_id = plane->crtc->base.id; |
399 | else | |
400 | plane_resp->crtc_id = 0; | |
401 | ||
de7b6be7 DS |
402 | if (plane->state && plane->state->fb) |
403 | plane_resp->fb_id = plane->state->fb->base.id; | |
404 | else if (!plane->state && plane->fb) | |
43968d7b DV |
405 | plane_resp->fb_id = plane->fb->base.id; |
406 | else | |
407 | plane_resp->fb_id = 0; | |
408 | drm_modeset_unlock(&plane->mutex); | |
409 | ||
410 | plane_resp->plane_id = plane->base.id; | |
411 | plane_resp->possible_crtcs = plane->possible_crtcs; | |
412 | plane_resp->gamma_size = 0; | |
413 | ||
414 | /* | |
415 | * This ioctl is called twice, once to determine how much space is | |
416 | * needed, and the 2nd time to fill it. | |
417 | */ | |
418 | if (plane->format_count && | |
419 | (plane_resp->count_format_types >= plane->format_count)) { | |
420 | format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; | |
421 | if (copy_to_user(format_ptr, | |
422 | plane->format_types, | |
423 | sizeof(uint32_t) * plane->format_count)) { | |
424 | return -EFAULT; | |
425 | } | |
426 | } | |
427 | plane_resp->count_format_types = plane->format_count; | |
428 | ||
429 | return 0; | |
430 | } | |
431 | ||
43968d7b DV |
432 | int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format) |
433 | { | |
434 | unsigned int i; | |
435 | ||
436 | for (i = 0; i < plane->format_count; i++) { | |
437 | if (format == plane->format_types[i]) | |
438 | return 0; | |
439 | } | |
440 | ||
441 | return -EINVAL; | |
442 | } | |
443 | ||
444 | /* | |
445 | * setplane_internal - setplane handler for internal callers | |
446 | * | |
447 | * Note that we assume an extra reference has already been taken on fb. If the | |
448 | * update fails, this reference will be dropped before return; if it succeeds, | |
449 | * the previous framebuffer (if any) will be unreferenced instead. | |
450 | * | |
451 | * src_{x,y,w,h} are provided in 16.16 fixed point format | |
452 | */ | |
453 | static int __setplane_internal(struct drm_plane *plane, | |
454 | struct drm_crtc *crtc, | |
455 | struct drm_framebuffer *fb, | |
456 | int32_t crtc_x, int32_t crtc_y, | |
457 | uint32_t crtc_w, uint32_t crtc_h, | |
458 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
459 | uint32_t src_x, uint32_t src_y, | |
232e8f70 DV |
460 | uint32_t src_w, uint32_t src_h, |
461 | struct drm_modeset_acquire_ctx *ctx) | |
43968d7b DV |
462 | { |
463 | int ret = 0; | |
464 | ||
465 | /* No fb means shut it down */ | |
466 | if (!fb) { | |
467 | plane->old_fb = plane->fb; | |
468 | ret = plane->funcs->disable_plane(plane); | |
469 | if (!ret) { | |
470 | plane->crtc = NULL; | |
471 | plane->fb = NULL; | |
472 | } else { | |
473 | plane->old_fb = NULL; | |
474 | } | |
475 | goto out; | |
476 | } | |
477 | ||
478 | /* Check whether this plane is usable on this CRTC */ | |
479 | if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { | |
480 | DRM_DEBUG_KMS("Invalid crtc for plane\n"); | |
481 | ret = -EINVAL; | |
482 | goto out; | |
483 | } | |
484 | ||
485 | /* Check whether this plane supports the fb pixel format. */ | |
438b74a5 | 486 | ret = drm_plane_check_pixel_format(plane, fb->format->format); |
43968d7b | 487 | if (ret) { |
b3c11ac2 EE |
488 | struct drm_format_name_buf format_name; |
489 | DRM_DEBUG_KMS("Invalid pixel format %s\n", | |
438b74a5 | 490 | drm_get_format_name(fb->format->format, |
b3c11ac2 | 491 | &format_name)); |
43968d7b DV |
492 | goto out; |
493 | } | |
494 | ||
495 | /* Give drivers some help against integer overflows */ | |
496 | if (crtc_w > INT_MAX || | |
497 | crtc_x > INT_MAX - (int32_t) crtc_w || | |
498 | crtc_h > INT_MAX || | |
499 | crtc_y > INT_MAX - (int32_t) crtc_h) { | |
500 | DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", | |
501 | crtc_w, crtc_h, crtc_x, crtc_y); | |
502 | ret = -ERANGE; | |
503 | goto out; | |
504 | } | |
505 | ||
506 | ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb); | |
507 | if (ret) | |
508 | goto out; | |
509 | ||
510 | plane->old_fb = plane->fb; | |
511 | ret = plane->funcs->update_plane(plane, crtc, fb, | |
512 | crtc_x, crtc_y, crtc_w, crtc_h, | |
34a2ab5e | 513 | src_x, src_y, src_w, src_h, ctx); |
43968d7b DV |
514 | if (!ret) { |
515 | plane->crtc = crtc; | |
516 | plane->fb = fb; | |
517 | fb = NULL; | |
518 | } else { | |
519 | plane->old_fb = NULL; | |
520 | } | |
521 | ||
522 | out: | |
523 | if (fb) | |
a4a69da0 | 524 | drm_framebuffer_put(fb); |
43968d7b | 525 | if (plane->old_fb) |
a4a69da0 | 526 | drm_framebuffer_put(plane->old_fb); |
43968d7b DV |
527 | plane->old_fb = NULL; |
528 | ||
529 | return ret; | |
530 | } | |
531 | ||
532 | static int setplane_internal(struct drm_plane *plane, | |
533 | struct drm_crtc *crtc, | |
534 | struct drm_framebuffer *fb, | |
535 | int32_t crtc_x, int32_t crtc_y, | |
536 | uint32_t crtc_w, uint32_t crtc_h, | |
537 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
538 | uint32_t src_x, uint32_t src_y, | |
539 | uint32_t src_w, uint32_t src_h) | |
540 | { | |
232e8f70 | 541 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
542 | int ret; |
543 | ||
232e8f70 DV |
544 | drm_modeset_acquire_init(&ctx, 0); |
545 | retry: | |
546 | ret = drm_modeset_lock_all_ctx(plane->dev, &ctx); | |
547 | if (ret) | |
548 | goto fail; | |
549 | plane->dev->mode_config.acquire_ctx = &ctx; | |
43968d7b DV |
550 | ret = __setplane_internal(plane, crtc, fb, |
551 | crtc_x, crtc_y, crtc_w, crtc_h, | |
232e8f70 DV |
552 | src_x, src_y, src_w, src_h, &ctx); |
553 | ||
554 | fail: | |
555 | if (ret == -EDEADLK) { | |
556 | drm_modeset_backoff(&ctx); | |
557 | goto retry; | |
558 | } | |
559 | drm_modeset_drop_locks(&ctx); | |
560 | drm_modeset_acquire_fini(&ctx); | |
43968d7b DV |
561 | |
562 | return ret; | |
563 | } | |
564 | ||
43968d7b DV |
565 | int drm_mode_setplane(struct drm_device *dev, void *data, |
566 | struct drm_file *file_priv) | |
567 | { | |
568 | struct drm_mode_set_plane *plane_req = data; | |
569 | struct drm_plane *plane; | |
570 | struct drm_crtc *crtc = NULL; | |
571 | struct drm_framebuffer *fb = NULL; | |
572 | ||
573 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
574 | return -EINVAL; | |
575 | ||
576 | /* | |
577 | * First, find the plane, crtc, and fb objects. If not available, | |
578 | * we don't bother to call the driver. | |
579 | */ | |
580 | plane = drm_plane_find(dev, plane_req->plane_id); | |
581 | if (!plane) { | |
582 | DRM_DEBUG_KMS("Unknown plane ID %d\n", | |
583 | plane_req->plane_id); | |
584 | return -ENOENT; | |
585 | } | |
586 | ||
587 | if (plane_req->fb_id) { | |
588 | fb = drm_framebuffer_lookup(dev, plane_req->fb_id); | |
589 | if (!fb) { | |
590 | DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", | |
591 | plane_req->fb_id); | |
592 | return -ENOENT; | |
593 | } | |
594 | ||
595 | crtc = drm_crtc_find(dev, plane_req->crtc_id); | |
596 | if (!crtc) { | |
597 | DRM_DEBUG_KMS("Unknown crtc ID %d\n", | |
598 | plane_req->crtc_id); | |
599 | return -ENOENT; | |
600 | } | |
601 | } | |
602 | ||
603 | /* | |
604 | * setplane_internal will take care of deref'ing either the old or new | |
605 | * framebuffer depending on success. | |
606 | */ | |
607 | return setplane_internal(plane, crtc, fb, | |
608 | plane_req->crtc_x, plane_req->crtc_y, | |
609 | plane_req->crtc_w, plane_req->crtc_h, | |
610 | plane_req->src_x, plane_req->src_y, | |
611 | plane_req->src_w, plane_req->src_h); | |
612 | } | |
613 | ||
43968d7b DV |
614 | static int drm_mode_cursor_universal(struct drm_crtc *crtc, |
615 | struct drm_mode_cursor2 *req, | |
616 | struct drm_file *file_priv) | |
617 | { | |
618 | struct drm_device *dev = crtc->dev; | |
619 | struct drm_framebuffer *fb = NULL; | |
620 | struct drm_mode_fb_cmd2 fbreq = { | |
621 | .width = req->width, | |
622 | .height = req->height, | |
623 | .pixel_format = DRM_FORMAT_ARGB8888, | |
624 | .pitches = { req->width * 4 }, | |
625 | .handles = { req->handle }, | |
626 | }; | |
627 | int32_t crtc_x, crtc_y; | |
628 | uint32_t crtc_w = 0, crtc_h = 0; | |
629 | uint32_t src_w = 0, src_h = 0; | |
232e8f70 | 630 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
631 | int ret = 0; |
632 | ||
633 | BUG_ON(!crtc->cursor); | |
634 | WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL); | |
635 | ||
232e8f70 DV |
636 | drm_modeset_acquire_init(&ctx, 0); |
637 | retry: | |
638 | ret = drm_modeset_lock(&crtc->mutex, &ctx); | |
639 | if (ret) | |
640 | goto fail; | |
641 | ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx); | |
642 | if (ret) | |
643 | goto fail; | |
644 | crtc->acquire_ctx = &ctx; | |
645 | ||
43968d7b DV |
646 | /* |
647 | * Obtain fb we'll be using (either new or existing) and take an extra | |
648 | * reference to it if fb != null. setplane will take care of dropping | |
649 | * the reference if the plane update fails. | |
650 | */ | |
651 | if (req->flags & DRM_MODE_CURSOR_BO) { | |
652 | if (req->handle) { | |
653 | fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv); | |
654 | if (IS_ERR(fb)) { | |
655 | DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n"); | |
656 | return PTR_ERR(fb); | |
657 | } | |
658 | fb->hot_x = req->hot_x; | |
659 | fb->hot_y = req->hot_y; | |
660 | } else { | |
661 | fb = NULL; | |
662 | } | |
663 | } else { | |
664 | fb = crtc->cursor->fb; | |
665 | if (fb) | |
a4a69da0 | 666 | drm_framebuffer_get(fb); |
43968d7b DV |
667 | } |
668 | ||
669 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
670 | crtc_x = req->x; | |
671 | crtc_y = req->y; | |
672 | } else { | |
673 | crtc_x = crtc->cursor_x; | |
674 | crtc_y = crtc->cursor_y; | |
675 | } | |
676 | ||
677 | if (fb) { | |
678 | crtc_w = fb->width; | |
679 | crtc_h = fb->height; | |
680 | src_w = fb->width << 16; | |
681 | src_h = fb->height << 16; | |
682 | } | |
683 | ||
684 | /* | |
685 | * setplane_internal will take care of deref'ing either the old or new | |
686 | * framebuffer depending on success. | |
687 | */ | |
688 | ret = __setplane_internal(crtc->cursor, crtc, fb, | |
689 | crtc_x, crtc_y, crtc_w, crtc_h, | |
232e8f70 | 690 | 0, 0, src_w, src_h, &ctx); |
43968d7b DV |
691 | |
692 | /* Update successful; save new cursor position, if necessary */ | |
693 | if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) { | |
694 | crtc->cursor_x = req->x; | |
695 | crtc->cursor_y = req->y; | |
696 | } | |
697 | ||
232e8f70 DV |
698 | fail: |
699 | if (ret == -EDEADLK) { | |
700 | drm_modeset_backoff(&ctx); | |
701 | goto retry; | |
702 | } | |
703 | ||
704 | drm_modeset_drop_locks(&ctx); | |
705 | drm_modeset_acquire_fini(&ctx); | |
706 | ||
43968d7b DV |
707 | return ret; |
708 | } | |
709 | ||
710 | static int drm_mode_cursor_common(struct drm_device *dev, | |
711 | struct drm_mode_cursor2 *req, | |
712 | struct drm_file *file_priv) | |
713 | { | |
714 | struct drm_crtc *crtc; | |
715 | int ret = 0; | |
716 | ||
717 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
718 | return -EINVAL; | |
719 | ||
720 | if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) | |
721 | return -EINVAL; | |
722 | ||
723 | crtc = drm_crtc_find(dev, req->crtc_id); | |
724 | if (!crtc) { | |
725 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); | |
726 | return -ENOENT; | |
727 | } | |
728 | ||
729 | /* | |
730 | * If this crtc has a universal cursor plane, call that plane's update | |
731 | * handler rather than using legacy cursor handlers. | |
732 | */ | |
232e8f70 DV |
733 | if (crtc->cursor) |
734 | return drm_mode_cursor_universal(crtc, req, file_priv); | |
43968d7b | 735 | |
232e8f70 | 736 | drm_modeset_lock_crtc(crtc, crtc->cursor); |
43968d7b DV |
737 | if (req->flags & DRM_MODE_CURSOR_BO) { |
738 | if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) { | |
739 | ret = -ENXIO; | |
740 | goto out; | |
741 | } | |
742 | /* Turns off the cursor if handle is 0 */ | |
743 | if (crtc->funcs->cursor_set2) | |
744 | ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle, | |
745 | req->width, req->height, req->hot_x, req->hot_y); | |
746 | else | |
747 | ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, | |
748 | req->width, req->height); | |
749 | } | |
750 | ||
751 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
752 | if (crtc->funcs->cursor_move) { | |
753 | ret = crtc->funcs->cursor_move(crtc, req->x, req->y); | |
754 | } else { | |
755 | ret = -EFAULT; | |
756 | goto out; | |
757 | } | |
758 | } | |
759 | out: | |
760 | drm_modeset_unlock_crtc(crtc); | |
761 | ||
762 | return ret; | |
763 | ||
764 | } | |
765 | ||
766 | ||
43968d7b DV |
767 | int drm_mode_cursor_ioctl(struct drm_device *dev, |
768 | void *data, struct drm_file *file_priv) | |
769 | { | |
770 | struct drm_mode_cursor *req = data; | |
771 | struct drm_mode_cursor2 new_req; | |
772 | ||
773 | memcpy(&new_req, req, sizeof(struct drm_mode_cursor)); | |
774 | new_req.hot_x = new_req.hot_y = 0; | |
775 | ||
776 | return drm_mode_cursor_common(dev, &new_req, file_priv); | |
777 | } | |
778 | ||
532b3671 | 779 | /* |
43968d7b DV |
780 | * Set the cursor configuration based on user request. This implements the 2nd |
781 | * version of the cursor ioctl, which allows userspace to additionally specify | |
782 | * the hotspot of the pointer. | |
43968d7b DV |
783 | */ |
784 | int drm_mode_cursor2_ioctl(struct drm_device *dev, | |
785 | void *data, struct drm_file *file_priv) | |
786 | { | |
787 | struct drm_mode_cursor2 *req = data; | |
788 | ||
789 | return drm_mode_cursor_common(dev, req, file_priv); | |
790 | } | |
791 | ||
43968d7b DV |
792 | int drm_mode_page_flip_ioctl(struct drm_device *dev, |
793 | void *data, struct drm_file *file_priv) | |
794 | { | |
795 | struct drm_mode_crtc_page_flip_target *page_flip = data; | |
796 | struct drm_crtc *crtc; | |
797 | struct drm_framebuffer *fb = NULL; | |
798 | struct drm_pending_vblank_event *e = NULL; | |
799 | u32 target_vblank = page_flip->sequence; | |
800 | int ret = -EINVAL; | |
801 | ||
802 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
803 | return -EINVAL; | |
804 | ||
805 | if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS) | |
806 | return -EINVAL; | |
807 | ||
808 | if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) | |
809 | return -EINVAL; | |
810 | ||
811 | /* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags | |
812 | * can be specified | |
813 | */ | |
814 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET) | |
815 | return -EINVAL; | |
816 | ||
817 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip) | |
818 | return -EINVAL; | |
819 | ||
820 | crtc = drm_crtc_find(dev, page_flip->crtc_id); | |
821 | if (!crtc) | |
822 | return -ENOENT; | |
823 | ||
2adb29b1 DV |
824 | if (crtc->funcs->page_flip_target) { |
825 | u32 current_vblank; | |
826 | int r; | |
827 | ||
828 | r = drm_crtc_vblank_get(crtc); | |
829 | if (r) | |
830 | return r; | |
831 | ||
832 | current_vblank = drm_crtc_vblank_count(crtc); | |
833 | ||
834 | switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) { | |
835 | case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE: | |
836 | if ((int)(target_vblank - current_vblank) > 1) { | |
837 | DRM_DEBUG("Invalid absolute flip target %u, " | |
838 | "must be <= %u\n", target_vblank, | |
839 | current_vblank + 1); | |
840 | drm_crtc_vblank_put(crtc); | |
841 | return -EINVAL; | |
842 | } | |
843 | break; | |
844 | case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE: | |
845 | if (target_vblank != 0 && target_vblank != 1) { | |
846 | DRM_DEBUG("Invalid relative flip target %u, " | |
847 | "must be 0 or 1\n", target_vblank); | |
848 | drm_crtc_vblank_put(crtc); | |
849 | return -EINVAL; | |
850 | } | |
851 | target_vblank += current_vblank; | |
852 | break; | |
853 | default: | |
854 | target_vblank = current_vblank + | |
855 | !(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC); | |
856 | break; | |
857 | } | |
858 | } else if (crtc->funcs->page_flip == NULL || | |
859 | (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) { | |
860 | return -EINVAL; | |
861 | } | |
862 | ||
43968d7b DV |
863 | drm_modeset_lock_crtc(crtc, crtc->primary); |
864 | if (crtc->primary->fb == NULL) { | |
865 | /* The framebuffer is currently unbound, presumably | |
866 | * due to a hotplug event, that userspace has not | |
867 | * yet discovered. | |
868 | */ | |
869 | ret = -EBUSY; | |
870 | goto out; | |
871 | } | |
872 | ||
43968d7b DV |
873 | fb = drm_framebuffer_lookup(dev, page_flip->fb_id); |
874 | if (!fb) { | |
875 | ret = -ENOENT; | |
876 | goto out; | |
877 | } | |
878 | ||
879 | if (crtc->state) { | |
880 | const struct drm_plane_state *state = crtc->primary->state; | |
881 | ||
882 | ret = drm_framebuffer_check_src_coords(state->src_x, | |
883 | state->src_y, | |
884 | state->src_w, | |
885 | state->src_h, | |
886 | fb); | |
887 | } else { | |
888 | ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb); | |
889 | } | |
890 | if (ret) | |
891 | goto out; | |
892 | ||
dbd4d576 | 893 | if (crtc->primary->fb->format != fb->format) { |
43968d7b DV |
894 | DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); |
895 | ret = -EINVAL; | |
896 | goto out; | |
897 | } | |
898 | ||
899 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
900 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
901 | if (!e) { | |
902 | ret = -ENOMEM; | |
903 | goto out; | |
904 | } | |
905 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
906 | e->event.base.length = sizeof(e->event); | |
907 | e->event.user_data = page_flip->user_data; | |
908 | ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base); | |
909 | if (ret) { | |
910 | kfree(e); | |
911 | goto out; | |
912 | } | |
913 | } | |
914 | ||
915 | crtc->primary->old_fb = crtc->primary->fb; | |
43968d7b DV |
916 | if (crtc->funcs->page_flip_target) |
917 | ret = crtc->funcs->page_flip_target(crtc, fb, e, | |
918 | page_flip->flags, | |
919 | target_vblank); | |
920 | else | |
921 | ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags); | |
922 | if (ret) { | |
923 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) | |
924 | drm_event_cancel_free(dev, &e->base); | |
925 | /* Keep the old fb, don't unref it. */ | |
926 | crtc->primary->old_fb = NULL; | |
927 | } else { | |
928 | crtc->primary->fb = fb; | |
929 | /* Unref only the old framebuffer. */ | |
930 | fb = NULL; | |
931 | } | |
932 | ||
933 | out: | |
934 | if (ret && crtc->funcs->page_flip_target) | |
935 | drm_crtc_vblank_put(crtc); | |
e86fa21b | 936 | if (fb) |
a4a69da0 | 937 | drm_framebuffer_put(fb); |
43968d7b | 938 | if (crtc->primary->old_fb) |
a4a69da0 | 939 | drm_framebuffer_put(crtc->primary->old_fb); |
43968d7b DV |
940 | crtc->primary->old_fb = NULL; |
941 | drm_modeset_unlock_crtc(crtc); | |
942 | ||
943 | return ret; | |
944 | } |