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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. | |
5fbef3ee DV |
280 | * |
281 | * Note that this function is not suitable for atomic drivers, since it doesn't | |
282 | * wire through the lock acquisition context properly and hence can't handle | |
283 | * retries or driver private locks. You probably want to use | |
284 | * drm_atomic_helper_disable_plane() or | |
285 | * drm_atomic_helper_disable_planes_on_crtc() instead. | |
43968d7b DV |
286 | */ |
287 | void drm_plane_force_disable(struct drm_plane *plane) | |
288 | { | |
289 | int ret; | |
290 | ||
291 | if (!plane->fb) | |
292 | return; | |
293 | ||
5fbef3ee DV |
294 | WARN_ON(drm_drv_uses_atomic_modeset(plane->dev)); |
295 | ||
43968d7b | 296 | plane->old_fb = plane->fb; |
19315294 | 297 | ret = plane->funcs->disable_plane(plane, NULL); |
43968d7b DV |
298 | if (ret) { |
299 | DRM_ERROR("failed to disable plane with busy fb\n"); | |
300 | plane->old_fb = NULL; | |
301 | return; | |
302 | } | |
303 | /* disconnect the plane from the fb and crtc: */ | |
a4a69da0 | 304 | drm_framebuffer_put(plane->old_fb); |
43968d7b DV |
305 | plane->old_fb = NULL; |
306 | plane->fb = NULL; | |
307 | plane->crtc = NULL; | |
308 | } | |
309 | EXPORT_SYMBOL(drm_plane_force_disable); | |
310 | ||
311 | /** | |
312 | * drm_mode_plane_set_obj_prop - set the value of a property | |
313 | * @plane: drm plane object to set property value for | |
314 | * @property: property to set | |
315 | * @value: value the property should be set to | |
316 | * | |
317 | * This functions sets a given property on a given plane object. This function | |
318 | * calls the driver's ->set_property callback and changes the software state of | |
319 | * the property if the callback succeeds. | |
320 | * | |
321 | * Returns: | |
322 | * Zero on success, error code on failure. | |
323 | */ | |
324 | int drm_mode_plane_set_obj_prop(struct drm_plane *plane, | |
325 | struct drm_property *property, | |
326 | uint64_t value) | |
327 | { | |
328 | int ret = -EINVAL; | |
329 | struct drm_mode_object *obj = &plane->base; | |
330 | ||
331 | if (plane->funcs->set_property) | |
332 | ret = plane->funcs->set_property(plane, property, value); | |
333 | if (!ret) | |
334 | drm_object_property_set_value(obj, property, value); | |
335 | ||
336 | return ret; | |
337 | } | |
338 | EXPORT_SYMBOL(drm_mode_plane_set_obj_prop); | |
339 | ||
43968d7b DV |
340 | int drm_mode_getplane_res(struct drm_device *dev, void *data, |
341 | struct drm_file *file_priv) | |
342 | { | |
343 | struct drm_mode_get_plane_res *plane_resp = data; | |
344 | struct drm_mode_config *config; | |
345 | struct drm_plane *plane; | |
346 | uint32_t __user *plane_ptr; | |
347 | int copied = 0; | |
348 | unsigned num_planes; | |
349 | ||
350 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
351 | return -EINVAL; | |
352 | ||
353 | config = &dev->mode_config; | |
354 | ||
355 | if (file_priv->universal_planes) | |
356 | num_planes = config->num_total_plane; | |
357 | else | |
358 | num_planes = config->num_overlay_plane; | |
359 | ||
360 | /* | |
361 | * This ioctl is called twice, once to determine how much space is | |
362 | * needed, and the 2nd time to fill it. | |
363 | */ | |
364 | if (num_planes && | |
365 | (plane_resp->count_planes >= num_planes)) { | |
366 | plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; | |
367 | ||
368 | /* Plane lists are invariant, no locking needed. */ | |
369 | drm_for_each_plane(plane, dev) { | |
370 | /* | |
371 | * Unless userspace set the 'universal planes' | |
372 | * capability bit, only advertise overlays. | |
373 | */ | |
374 | if (plane->type != DRM_PLANE_TYPE_OVERLAY && | |
375 | !file_priv->universal_planes) | |
376 | continue; | |
377 | ||
378 | if (put_user(plane->base.id, plane_ptr + copied)) | |
379 | return -EFAULT; | |
380 | copied++; | |
381 | } | |
382 | } | |
383 | plane_resp->count_planes = num_planes; | |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
43968d7b DV |
388 | int drm_mode_getplane(struct drm_device *dev, void *data, |
389 | struct drm_file *file_priv) | |
390 | { | |
391 | struct drm_mode_get_plane *plane_resp = data; | |
392 | struct drm_plane *plane; | |
393 | uint32_t __user *format_ptr; | |
394 | ||
395 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
396 | return -EINVAL; | |
397 | ||
398 | plane = drm_plane_find(dev, plane_resp->plane_id); | |
399 | if (!plane) | |
400 | return -ENOENT; | |
401 | ||
402 | drm_modeset_lock(&plane->mutex, NULL); | |
de7b6be7 DS |
403 | if (plane->state && plane->state->crtc) |
404 | plane_resp->crtc_id = plane->state->crtc->base.id; | |
405 | else if (!plane->state && plane->crtc) | |
43968d7b DV |
406 | plane_resp->crtc_id = plane->crtc->base.id; |
407 | else | |
408 | plane_resp->crtc_id = 0; | |
409 | ||
de7b6be7 DS |
410 | if (plane->state && plane->state->fb) |
411 | plane_resp->fb_id = plane->state->fb->base.id; | |
412 | else if (!plane->state && plane->fb) | |
43968d7b DV |
413 | plane_resp->fb_id = plane->fb->base.id; |
414 | else | |
415 | plane_resp->fb_id = 0; | |
416 | drm_modeset_unlock(&plane->mutex); | |
417 | ||
418 | plane_resp->plane_id = plane->base.id; | |
419 | plane_resp->possible_crtcs = plane->possible_crtcs; | |
420 | plane_resp->gamma_size = 0; | |
421 | ||
422 | /* | |
423 | * This ioctl is called twice, once to determine how much space is | |
424 | * needed, and the 2nd time to fill it. | |
425 | */ | |
426 | if (plane->format_count && | |
427 | (plane_resp->count_format_types >= plane->format_count)) { | |
428 | format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; | |
429 | if (copy_to_user(format_ptr, | |
430 | plane->format_types, | |
431 | sizeof(uint32_t) * plane->format_count)) { | |
432 | return -EFAULT; | |
433 | } | |
434 | } | |
435 | plane_resp->count_format_types = plane->format_count; | |
436 | ||
437 | return 0; | |
438 | } | |
439 | ||
43968d7b DV |
440 | int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format) |
441 | { | |
442 | unsigned int i; | |
443 | ||
444 | for (i = 0; i < plane->format_count; i++) { | |
445 | if (format == plane->format_types[i]) | |
446 | return 0; | |
447 | } | |
448 | ||
449 | return -EINVAL; | |
450 | } | |
451 | ||
452 | /* | |
453 | * setplane_internal - setplane handler for internal callers | |
454 | * | |
455 | * Note that we assume an extra reference has already been taken on fb. If the | |
456 | * update fails, this reference will be dropped before return; if it succeeds, | |
457 | * the previous framebuffer (if any) will be unreferenced instead. | |
458 | * | |
459 | * src_{x,y,w,h} are provided in 16.16 fixed point format | |
460 | */ | |
461 | static int __setplane_internal(struct drm_plane *plane, | |
462 | struct drm_crtc *crtc, | |
463 | struct drm_framebuffer *fb, | |
464 | int32_t crtc_x, int32_t crtc_y, | |
465 | uint32_t crtc_w, uint32_t crtc_h, | |
466 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
467 | uint32_t src_x, uint32_t src_y, | |
232e8f70 DV |
468 | uint32_t src_w, uint32_t src_h, |
469 | struct drm_modeset_acquire_ctx *ctx) | |
43968d7b DV |
470 | { |
471 | int ret = 0; | |
472 | ||
473 | /* No fb means shut it down */ | |
474 | if (!fb) { | |
475 | plane->old_fb = plane->fb; | |
19315294 | 476 | ret = plane->funcs->disable_plane(plane, ctx); |
43968d7b DV |
477 | if (!ret) { |
478 | plane->crtc = NULL; | |
479 | plane->fb = NULL; | |
480 | } else { | |
481 | plane->old_fb = NULL; | |
482 | } | |
483 | goto out; | |
484 | } | |
485 | ||
486 | /* Check whether this plane is usable on this CRTC */ | |
487 | if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { | |
488 | DRM_DEBUG_KMS("Invalid crtc for plane\n"); | |
489 | ret = -EINVAL; | |
490 | goto out; | |
491 | } | |
492 | ||
493 | /* Check whether this plane supports the fb pixel format. */ | |
438b74a5 | 494 | ret = drm_plane_check_pixel_format(plane, fb->format->format); |
43968d7b | 495 | if (ret) { |
b3c11ac2 EE |
496 | struct drm_format_name_buf format_name; |
497 | DRM_DEBUG_KMS("Invalid pixel format %s\n", | |
438b74a5 | 498 | drm_get_format_name(fb->format->format, |
b3c11ac2 | 499 | &format_name)); |
43968d7b DV |
500 | goto out; |
501 | } | |
502 | ||
503 | /* Give drivers some help against integer overflows */ | |
504 | if (crtc_w > INT_MAX || | |
505 | crtc_x > INT_MAX - (int32_t) crtc_w || | |
506 | crtc_h > INT_MAX || | |
507 | crtc_y > INT_MAX - (int32_t) crtc_h) { | |
508 | DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", | |
509 | crtc_w, crtc_h, crtc_x, crtc_y); | |
510 | ret = -ERANGE; | |
511 | goto out; | |
512 | } | |
513 | ||
514 | ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb); | |
515 | if (ret) | |
516 | goto out; | |
517 | ||
518 | plane->old_fb = plane->fb; | |
519 | ret = plane->funcs->update_plane(plane, crtc, fb, | |
520 | crtc_x, crtc_y, crtc_w, crtc_h, | |
34a2ab5e | 521 | src_x, src_y, src_w, src_h, ctx); |
43968d7b DV |
522 | if (!ret) { |
523 | plane->crtc = crtc; | |
524 | plane->fb = fb; | |
525 | fb = NULL; | |
526 | } else { | |
527 | plane->old_fb = NULL; | |
528 | } | |
529 | ||
530 | out: | |
531 | if (fb) | |
a4a69da0 | 532 | drm_framebuffer_put(fb); |
43968d7b | 533 | if (plane->old_fb) |
a4a69da0 | 534 | drm_framebuffer_put(plane->old_fb); |
43968d7b DV |
535 | plane->old_fb = NULL; |
536 | ||
537 | return ret; | |
538 | } | |
539 | ||
540 | static int setplane_internal(struct drm_plane *plane, | |
541 | struct drm_crtc *crtc, | |
542 | struct drm_framebuffer *fb, | |
543 | int32_t crtc_x, int32_t crtc_y, | |
544 | uint32_t crtc_w, uint32_t crtc_h, | |
545 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
546 | uint32_t src_x, uint32_t src_y, | |
547 | uint32_t src_w, uint32_t src_h) | |
548 | { | |
232e8f70 | 549 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
550 | int ret; |
551 | ||
232e8f70 DV |
552 | drm_modeset_acquire_init(&ctx, 0); |
553 | retry: | |
554 | ret = drm_modeset_lock_all_ctx(plane->dev, &ctx); | |
555 | if (ret) | |
556 | goto fail; | |
43968d7b DV |
557 | ret = __setplane_internal(plane, crtc, fb, |
558 | crtc_x, crtc_y, crtc_w, crtc_h, | |
232e8f70 DV |
559 | src_x, src_y, src_w, src_h, &ctx); |
560 | ||
561 | fail: | |
562 | if (ret == -EDEADLK) { | |
563 | drm_modeset_backoff(&ctx); | |
564 | goto retry; | |
565 | } | |
566 | drm_modeset_drop_locks(&ctx); | |
567 | drm_modeset_acquire_fini(&ctx); | |
43968d7b DV |
568 | |
569 | return ret; | |
570 | } | |
571 | ||
43968d7b DV |
572 | int drm_mode_setplane(struct drm_device *dev, void *data, |
573 | struct drm_file *file_priv) | |
574 | { | |
575 | struct drm_mode_set_plane *plane_req = data; | |
576 | struct drm_plane *plane; | |
577 | struct drm_crtc *crtc = NULL; | |
578 | struct drm_framebuffer *fb = NULL; | |
579 | ||
580 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
581 | return -EINVAL; | |
582 | ||
583 | /* | |
584 | * First, find the plane, crtc, and fb objects. If not available, | |
585 | * we don't bother to call the driver. | |
586 | */ | |
587 | plane = drm_plane_find(dev, plane_req->plane_id); | |
588 | if (!plane) { | |
589 | DRM_DEBUG_KMS("Unknown plane ID %d\n", | |
590 | plane_req->plane_id); | |
591 | return -ENOENT; | |
592 | } | |
593 | ||
594 | if (plane_req->fb_id) { | |
595 | fb = drm_framebuffer_lookup(dev, plane_req->fb_id); | |
596 | if (!fb) { | |
597 | DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", | |
598 | plane_req->fb_id); | |
599 | return -ENOENT; | |
600 | } | |
601 | ||
602 | crtc = drm_crtc_find(dev, plane_req->crtc_id); | |
603 | if (!crtc) { | |
491ab470 | 604 | drm_framebuffer_put(fb); |
43968d7b DV |
605 | DRM_DEBUG_KMS("Unknown crtc ID %d\n", |
606 | plane_req->crtc_id); | |
607 | return -ENOENT; | |
608 | } | |
609 | } | |
610 | ||
611 | /* | |
612 | * setplane_internal will take care of deref'ing either the old or new | |
613 | * framebuffer depending on success. | |
614 | */ | |
615 | return setplane_internal(plane, crtc, fb, | |
616 | plane_req->crtc_x, plane_req->crtc_y, | |
617 | plane_req->crtc_w, plane_req->crtc_h, | |
618 | plane_req->src_x, plane_req->src_y, | |
619 | plane_req->src_w, plane_req->src_h); | |
620 | } | |
621 | ||
43968d7b DV |
622 | static int drm_mode_cursor_universal(struct drm_crtc *crtc, |
623 | struct drm_mode_cursor2 *req, | |
b95ff031 DV |
624 | struct drm_file *file_priv, |
625 | struct drm_modeset_acquire_ctx *ctx) | |
43968d7b DV |
626 | { |
627 | struct drm_device *dev = crtc->dev; | |
628 | struct drm_framebuffer *fb = NULL; | |
629 | struct drm_mode_fb_cmd2 fbreq = { | |
630 | .width = req->width, | |
631 | .height = req->height, | |
632 | .pixel_format = DRM_FORMAT_ARGB8888, | |
633 | .pitches = { req->width * 4 }, | |
634 | .handles = { req->handle }, | |
635 | }; | |
636 | int32_t crtc_x, crtc_y; | |
637 | uint32_t crtc_w = 0, crtc_h = 0; | |
638 | uint32_t src_w = 0, src_h = 0; | |
639 | int ret = 0; | |
640 | ||
641 | BUG_ON(!crtc->cursor); | |
642 | WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL); | |
643 | ||
644 | /* | |
645 | * Obtain fb we'll be using (either new or existing) and take an extra | |
646 | * reference to it if fb != null. setplane will take care of dropping | |
647 | * the reference if the plane update fails. | |
648 | */ | |
649 | if (req->flags & DRM_MODE_CURSOR_BO) { | |
650 | if (req->handle) { | |
651 | fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv); | |
652 | if (IS_ERR(fb)) { | |
653 | DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n"); | |
654 | return PTR_ERR(fb); | |
655 | } | |
656 | fb->hot_x = req->hot_x; | |
657 | fb->hot_y = req->hot_y; | |
658 | } else { | |
659 | fb = NULL; | |
660 | } | |
661 | } else { | |
662 | fb = crtc->cursor->fb; | |
663 | if (fb) | |
a4a69da0 | 664 | drm_framebuffer_get(fb); |
43968d7b DV |
665 | } |
666 | ||
667 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
668 | crtc_x = req->x; | |
669 | crtc_y = req->y; | |
670 | } else { | |
671 | crtc_x = crtc->cursor_x; | |
672 | crtc_y = crtc->cursor_y; | |
673 | } | |
674 | ||
675 | if (fb) { | |
676 | crtc_w = fb->width; | |
677 | crtc_h = fb->height; | |
678 | src_w = fb->width << 16; | |
679 | src_h = fb->height << 16; | |
680 | } | |
681 | ||
682 | /* | |
683 | * setplane_internal will take care of deref'ing either the old or new | |
684 | * framebuffer depending on success. | |
685 | */ | |
686 | ret = __setplane_internal(crtc->cursor, crtc, fb, | |
687 | crtc_x, crtc_y, crtc_w, crtc_h, | |
b95ff031 | 688 | 0, 0, src_w, src_h, ctx); |
43968d7b DV |
689 | |
690 | /* Update successful; save new cursor position, if necessary */ | |
691 | if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) { | |
692 | crtc->cursor_x = req->x; | |
693 | crtc->cursor_y = req->y; | |
694 | } | |
695 | ||
696 | return ret; | |
697 | } | |
698 | ||
699 | static int drm_mode_cursor_common(struct drm_device *dev, | |
700 | struct drm_mode_cursor2 *req, | |
701 | struct drm_file *file_priv) | |
702 | { | |
703 | struct drm_crtc *crtc; | |
b95ff031 | 704 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
705 | int ret = 0; |
706 | ||
707 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
708 | return -EINVAL; | |
709 | ||
710 | if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) | |
711 | return -EINVAL; | |
712 | ||
713 | crtc = drm_crtc_find(dev, req->crtc_id); | |
714 | if (!crtc) { | |
715 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); | |
716 | return -ENOENT; | |
717 | } | |
718 | ||
b95ff031 DV |
719 | drm_modeset_acquire_init(&ctx, 0); |
720 | retry: | |
721 | ret = drm_modeset_lock(&crtc->mutex, &ctx); | |
722 | if (ret) | |
723 | goto out; | |
43968d7b DV |
724 | /* |
725 | * If this crtc has a universal cursor plane, call that plane's update | |
726 | * handler rather than using legacy cursor handlers. | |
727 | */ | |
b95ff031 | 728 | if (crtc->cursor) { |
2e064163 DV |
729 | ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx); |
730 | if (ret) | |
731 | goto out; | |
732 | ||
b95ff031 DV |
733 | ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx); |
734 | goto out; | |
735 | } | |
43968d7b DV |
736 | |
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: | |
b95ff031 DV |
760 | if (ret == -EDEADLK) { |
761 | drm_modeset_backoff(&ctx); | |
762 | goto retry; | |
763 | } | |
764 | ||
765 | drm_modeset_drop_locks(&ctx); | |
766 | drm_modeset_acquire_fini(&ctx); | |
43968d7b DV |
767 | |
768 | return ret; | |
769 | ||
770 | } | |
771 | ||
772 | ||
43968d7b DV |
773 | int drm_mode_cursor_ioctl(struct drm_device *dev, |
774 | void *data, struct drm_file *file_priv) | |
775 | { | |
776 | struct drm_mode_cursor *req = data; | |
777 | struct drm_mode_cursor2 new_req; | |
778 | ||
779 | memcpy(&new_req, req, sizeof(struct drm_mode_cursor)); | |
780 | new_req.hot_x = new_req.hot_y = 0; | |
781 | ||
782 | return drm_mode_cursor_common(dev, &new_req, file_priv); | |
783 | } | |
784 | ||
532b3671 | 785 | /* |
43968d7b DV |
786 | * Set the cursor configuration based on user request. This implements the 2nd |
787 | * version of the cursor ioctl, which allows userspace to additionally specify | |
788 | * the hotspot of the pointer. | |
43968d7b DV |
789 | */ |
790 | int drm_mode_cursor2_ioctl(struct drm_device *dev, | |
791 | void *data, struct drm_file *file_priv) | |
792 | { | |
793 | struct drm_mode_cursor2 *req = data; | |
794 | ||
795 | return drm_mode_cursor_common(dev, req, file_priv); | |
796 | } | |
797 | ||
43968d7b DV |
798 | int drm_mode_page_flip_ioctl(struct drm_device *dev, |
799 | void *data, struct drm_file *file_priv) | |
800 | { | |
801 | struct drm_mode_crtc_page_flip_target *page_flip = data; | |
802 | struct drm_crtc *crtc; | |
803 | struct drm_framebuffer *fb = NULL; | |
804 | struct drm_pending_vblank_event *e = NULL; | |
805 | u32 target_vblank = page_flip->sequence; | |
29dc0d1d | 806 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
807 | int ret = -EINVAL; |
808 | ||
809 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
810 | return -EINVAL; | |
811 | ||
812 | if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS) | |
813 | return -EINVAL; | |
814 | ||
815 | if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) | |
816 | return -EINVAL; | |
817 | ||
818 | /* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags | |
819 | * can be specified | |
820 | */ | |
821 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET) | |
822 | return -EINVAL; | |
823 | ||
824 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip) | |
825 | return -EINVAL; | |
826 | ||
827 | crtc = drm_crtc_find(dev, page_flip->crtc_id); | |
828 | if (!crtc) | |
829 | return -ENOENT; | |
830 | ||
2adb29b1 DV |
831 | if (crtc->funcs->page_flip_target) { |
832 | u32 current_vblank; | |
833 | int r; | |
834 | ||
835 | r = drm_crtc_vblank_get(crtc); | |
836 | if (r) | |
837 | return r; | |
838 | ||
839 | current_vblank = drm_crtc_vblank_count(crtc); | |
840 | ||
841 | switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) { | |
842 | case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE: | |
843 | if ((int)(target_vblank - current_vblank) > 1) { | |
844 | DRM_DEBUG("Invalid absolute flip target %u, " | |
845 | "must be <= %u\n", target_vblank, | |
846 | current_vblank + 1); | |
847 | drm_crtc_vblank_put(crtc); | |
848 | return -EINVAL; | |
849 | } | |
850 | break; | |
851 | case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE: | |
852 | if (target_vblank != 0 && target_vblank != 1) { | |
853 | DRM_DEBUG("Invalid relative flip target %u, " | |
854 | "must be 0 or 1\n", target_vblank); | |
855 | drm_crtc_vblank_put(crtc); | |
856 | return -EINVAL; | |
857 | } | |
858 | target_vblank += current_vblank; | |
859 | break; | |
860 | default: | |
861 | target_vblank = current_vblank + | |
862 | !(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC); | |
863 | break; | |
864 | } | |
865 | } else if (crtc->funcs->page_flip == NULL || | |
866 | (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) { | |
867 | return -EINVAL; | |
868 | } | |
869 | ||
29dc0d1d DV |
870 | drm_modeset_acquire_init(&ctx, 0); |
871 | retry: | |
872 | ret = drm_modeset_lock(&crtc->mutex, &ctx); | |
873 | if (ret) | |
874 | goto out; | |
9739e746 | 875 | ret = drm_modeset_lock(&crtc->primary->mutex, &ctx); |
29dc0d1d DV |
876 | if (ret) |
877 | goto out; | |
29dc0d1d | 878 | |
43968d7b DV |
879 | if (crtc->primary->fb == NULL) { |
880 | /* The framebuffer is currently unbound, presumably | |
881 | * due to a hotplug event, that userspace has not | |
882 | * yet discovered. | |
883 | */ | |
884 | ret = -EBUSY; | |
885 | goto out; | |
886 | } | |
887 | ||
43968d7b DV |
888 | fb = drm_framebuffer_lookup(dev, page_flip->fb_id); |
889 | if (!fb) { | |
890 | ret = -ENOENT; | |
891 | goto out; | |
892 | } | |
893 | ||
894 | if (crtc->state) { | |
895 | const struct drm_plane_state *state = crtc->primary->state; | |
896 | ||
897 | ret = drm_framebuffer_check_src_coords(state->src_x, | |
898 | state->src_y, | |
899 | state->src_w, | |
900 | state->src_h, | |
901 | fb); | |
902 | } else { | |
903 | ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb); | |
904 | } | |
905 | if (ret) | |
906 | goto out; | |
907 | ||
dbd4d576 | 908 | if (crtc->primary->fb->format != fb->format) { |
43968d7b DV |
909 | DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); |
910 | ret = -EINVAL; | |
911 | goto out; | |
912 | } | |
913 | ||
914 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
915 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
916 | if (!e) { | |
917 | ret = -ENOMEM; | |
918 | goto out; | |
919 | } | |
920 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
921 | e->event.base.length = sizeof(e->event); | |
922 | e->event.user_data = page_flip->user_data; | |
923 | ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base); | |
924 | if (ret) { | |
925 | kfree(e); | |
031e5896 | 926 | e = NULL; |
43968d7b DV |
927 | goto out; |
928 | } | |
929 | } | |
930 | ||
931 | crtc->primary->old_fb = crtc->primary->fb; | |
43968d7b DV |
932 | if (crtc->funcs->page_flip_target) |
933 | ret = crtc->funcs->page_flip_target(crtc, fb, e, | |
934 | page_flip->flags, | |
41292b1f DV |
935 | target_vblank, |
936 | &ctx); | |
43968d7b | 937 | else |
41292b1f DV |
938 | ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags, |
939 | &ctx); | |
43968d7b DV |
940 | if (ret) { |
941 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) | |
942 | drm_event_cancel_free(dev, &e->base); | |
943 | /* Keep the old fb, don't unref it. */ | |
944 | crtc->primary->old_fb = NULL; | |
945 | } else { | |
946 | crtc->primary->fb = fb; | |
947 | /* Unref only the old framebuffer. */ | |
948 | fb = NULL; | |
949 | } | |
950 | ||
951 | out: | |
e86fa21b | 952 | if (fb) |
a4a69da0 | 953 | drm_framebuffer_put(fb); |
43968d7b | 954 | if (crtc->primary->old_fb) |
a4a69da0 | 955 | drm_framebuffer_put(crtc->primary->old_fb); |
43968d7b | 956 | crtc->primary->old_fb = NULL; |
29dc0d1d DV |
957 | |
958 | if (ret == -EDEADLK) { | |
959 | drm_modeset_backoff(&ctx); | |
960 | goto retry; | |
961 | } | |
962 | ||
963 | drm_modeset_drop_locks(&ctx); | |
964 | drm_modeset_acquire_fini(&ctx); | |
43968d7b | 965 | |
f9285434 DV |
966 | if (ret && crtc->funcs->page_flip_target) |
967 | drm_crtc_vblank_put(crtc); | |
968 | ||
43968d7b DV |
969 | return ret; |
970 | } |