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7520a277 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 <linux/export.h> | |
24 | #include <drm/drmP.h> | |
25 | #include <drm/drm_auth.h> | |
26 | #include <drm/drm_framebuffer.h> | |
941b8caa | 27 | #include <drm/drm_atomic.h> |
72fdb40c | 28 | #include <drm/drm_atomic_uapi.h> |
45d58b40 | 29 | #include <drm/drm_print.h> |
21376e2c | 30 | #include <drm/drm_util.h> |
7520a277 | 31 | |
45d58b40 | 32 | #include "drm_internal.h" |
7520a277 DV |
33 | #include "drm_crtc_internal.h" |
34 | ||
750fb8c4 DV |
35 | /** |
36 | * DOC: overview | |
37 | * | |
38 | * Frame buffers are abstract memory objects that provide a source of pixels to | |
39 | * scanout to a CRTC. Applications explicitly request the creation of frame | |
40 | * buffers through the DRM_IOCTL_MODE_ADDFB(2) ioctls and receive an opaque | |
41 | * handle that can be passed to the KMS CRTC control, plane configuration and | |
42 | * page flip functions. | |
43 | * | |
44 | * Frame buffers rely on the underlying memory manager for allocating backing | |
45 | * storage. When creating a frame buffer applications pass a memory handle | |
46 | * (or a list of memory handles for multi-planar formats) through the | |
ea0dd85a | 47 | * &struct drm_mode_fb_cmd2 argument. For drivers using GEM as their userspace |
750fb8c4 DV |
48 | * buffer management interface this would be a GEM handle. Drivers are however |
49 | * free to use their own backing storage object handles, e.g. vmwgfx directly | |
50 | * exposes special TTM handles to userspace and so expects TTM handles in the | |
51 | * create ioctl and not GEM handles. | |
52 | * | |
ea0dd85a | 53 | * Framebuffers are tracked with &struct drm_framebuffer. They are published |
750fb8c4 DV |
54 | * using drm_framebuffer_init() - after calling that function userspace can use |
55 | * and access the framebuffer object. The helper function | |
56 | * drm_helper_mode_fill_fb_struct() can be used to pre-fill the required | |
57 | * metadata fields. | |
58 | * | |
59 | * The lifetime of a drm framebuffer is controlled with a reference count, | |
a4a69da0 TR |
60 | * drivers can grab additional references with drm_framebuffer_get() and drop |
61 | * them again with drm_framebuffer_put(). For driver-private framebuffers for | |
62 | * which the last reference is never dropped (e.g. for the fbdev framebuffer | |
63 | * when the struct &struct drm_framebuffer is embedded into the fbdev helper | |
64 | * struct) drivers can manually clean up a framebuffer at module unload time | |
65 | * with drm_framebuffer_unregister_private(). But doing this is not | |
66 | * recommended, and it's better to have a normal free-standing &struct | |
d574528a | 67 | * drm_framebuffer. |
750fb8c4 DV |
68 | */ |
69 | ||
43968d7b DV |
70 | int drm_framebuffer_check_src_coords(uint32_t src_x, uint32_t src_y, |
71 | uint32_t src_w, uint32_t src_h, | |
72 | const struct drm_framebuffer *fb) | |
73 | { | |
74 | unsigned int fb_width, fb_height; | |
75 | ||
76 | fb_width = fb->width << 16; | |
77 | fb_height = fb->height << 16; | |
78 | ||
79 | /* Make sure source coordinates are inside the fb. */ | |
80 | if (src_w > fb_width || | |
81 | src_x > fb_width - src_w || | |
82 | src_h > fb_height || | |
83 | src_y > fb_height - src_h) { | |
84 | DRM_DEBUG_KMS("Invalid source coordinates " | |
0338f0d0 | 85 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n", |
43968d7b DV |
86 | src_w >> 16, ((src_w & 0xffff) * 15625) >> 10, |
87 | src_h >> 16, ((src_h & 0xffff) * 15625) >> 10, | |
88 | src_x >> 16, ((src_x & 0xffff) * 15625) >> 10, | |
0338f0d0 VS |
89 | src_y >> 16, ((src_y & 0xffff) * 15625) >> 10, |
90 | fb->width, fb->height); | |
43968d7b DV |
91 | return -ENOSPC; |
92 | } | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
7520a277 DV |
97 | /** |
98 | * drm_mode_addfb - add an FB to the graphics configuration | |
99 | * @dev: drm device for the ioctl | |
d30827ce NT |
100 | * @or: pointer to request structure |
101 | * @file_priv: drm file | |
7520a277 DV |
102 | * |
103 | * Add a new FB to the specified CRTC, given a user request. This is the | |
104 | * original addfb ioctl which only supported RGB formats. | |
105 | * | |
d30827ce | 106 | * Called by the user via ioctl, or by an in-kernel client. |
7520a277 DV |
107 | * |
108 | * Returns: | |
109 | * Zero on success, negative errno on failure. | |
110 | */ | |
d30827ce NT |
111 | int drm_mode_addfb(struct drm_device *dev, struct drm_mode_fb_cmd *or, |
112 | struct drm_file *file_priv) | |
7520a277 | 113 | { |
7520a277 DV |
114 | struct drm_mode_fb_cmd2 r = {}; |
115 | int ret; | |
116 | ||
69fdf420 CW |
117 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
118 | return -EOPNOTSUPP; | |
119 | ||
059b5eb5 | 120 | r.pixel_format = drm_driver_legacy_fb_format(dev, or->bpp, or->depth); |
70109354 CW |
121 | if (r.pixel_format == DRM_FORMAT_INVALID) { |
122 | DRM_DEBUG("bad {bpp:%d, depth:%d}\n", or->bpp, or->depth); | |
123 | return -EINVAL; | |
124 | } | |
125 | ||
7520a277 DV |
126 | /* convert to new format and call new ioctl */ |
127 | r.fb_id = or->fb_id; | |
128 | r.width = or->width; | |
129 | r.height = or->height; | |
130 | r.pitches[0] = or->pitch; | |
7520a277 DV |
131 | r.handles[0] = or->handle; |
132 | ||
133 | ret = drm_mode_addfb2(dev, &r, file_priv); | |
134 | if (ret) | |
135 | return ret; | |
136 | ||
137 | or->fb_id = r.fb_id; | |
138 | ||
139 | return 0; | |
140 | } | |
141 | ||
d30827ce NT |
142 | int drm_mode_addfb_ioctl(struct drm_device *dev, |
143 | void *data, struct drm_file *file_priv) | |
144 | { | |
145 | return drm_mode_addfb(dev, data, file_priv); | |
146 | } | |
147 | ||
568c5e45 VS |
148 | static int fb_plane_width(int width, |
149 | const struct drm_format_info *format, int plane) | |
150 | { | |
151 | if (plane == 0) | |
152 | return width; | |
153 | ||
33f673aa | 154 | return DIV_ROUND_UP(width, format->hsub); |
568c5e45 VS |
155 | } |
156 | ||
157 | static int fb_plane_height(int height, | |
158 | const struct drm_format_info *format, int plane) | |
159 | { | |
160 | if (plane == 0) | |
161 | return height; | |
162 | ||
33f673aa | 163 | return DIV_ROUND_UP(height, format->vsub); |
568c5e45 VS |
164 | } |
165 | ||
6a0f9ebf VS |
166 | static int framebuffer_check(struct drm_device *dev, |
167 | const struct drm_mode_fb_cmd2 *r) | |
7520a277 | 168 | { |
d5493490 LP |
169 | const struct drm_format_info *info; |
170 | int i; | |
7520a277 | 171 | |
6a0f9ebf | 172 | /* check if the format is supported at all */ |
00409fd6 | 173 | info = __drm_format_info(r->pixel_format); |
d5493490 | 174 | if (!info) { |
b3c11ac2 | 175 | struct drm_format_name_buf format_name; |
c10496c8 | 176 | |
b3c11ac2 | 177 | DRM_DEBUG_KMS("bad framebuffer format %s\n", |
c10496c8 VS |
178 | drm_get_format_name(r->pixel_format, |
179 | &format_name)); | |
d5493490 | 180 | return -EINVAL; |
7520a277 DV |
181 | } |
182 | ||
6a0f9ebf VS |
183 | /* now let the driver pick its own format info */ |
184 | info = drm_get_format_info(dev, r); | |
185 | ||
33f673aa | 186 | if (r->width == 0) { |
7520a277 DV |
187 | DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width); |
188 | return -EINVAL; | |
189 | } | |
190 | ||
33f673aa | 191 | if (r->height == 0) { |
7520a277 DV |
192 | DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height); |
193 | return -EINVAL; | |
194 | } | |
195 | ||
d5493490 | 196 | for (i = 0; i < info->num_planes; i++) { |
568c5e45 VS |
197 | unsigned int width = fb_plane_width(r->width, info, i); |
198 | unsigned int height = fb_plane_height(r->height, info, i); | |
8db2dc85 | 199 | unsigned int block_size = info->char_per_block[i]; |
042bf753 | 200 | u64 min_pitch = drm_format_info_min_pitch(info, i, width); |
7520a277 | 201 | |
8db2dc85 AG |
202 | if (!block_size && (r->modifier[i] == DRM_FORMAT_MOD_LINEAR)) { |
203 | DRM_DEBUG_KMS("Format requires non-linear modifier for plane %d\n", i); | |
204 | return -EINVAL; | |
205 | } | |
206 | ||
7520a277 DV |
207 | if (!r->handles[i]) { |
208 | DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i); | |
209 | return -EINVAL; | |
210 | } | |
211 | ||
042bf753 | 212 | if (min_pitch > UINT_MAX) |
7520a277 DV |
213 | return -ERANGE; |
214 | ||
215 | if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX) | |
216 | return -ERANGE; | |
217 | ||
8db2dc85 | 218 | if (block_size && r->pitches[i] < min_pitch) { |
7520a277 DV |
219 | DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i); |
220 | return -EINVAL; | |
221 | } | |
222 | ||
223 | if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) { | |
224 | DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n", | |
225 | r->modifier[i], i); | |
226 | return -EINVAL; | |
227 | } | |
228 | ||
bae781b2 VS |
229 | if (r->flags & DRM_MODE_FB_MODIFIERS && |
230 | r->modifier[i] != r->modifier[0]) { | |
231 | DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n", | |
232 | r->modifier[i], i); | |
233 | return -EINVAL; | |
234 | } | |
235 | ||
7520a277 DV |
236 | /* modifier specific checks: */ |
237 | switch (r->modifier[i]) { | |
238 | case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE: | |
239 | /* NOTE: the pitch restriction may be lifted later if it turns | |
240 | * out that no hw has this restriction: | |
241 | */ | |
242 | if (r->pixel_format != DRM_FORMAT_NV12 || | |
243 | width % 128 || height % 32 || | |
244 | r->pitches[i] % 128) { | |
245 | DRM_DEBUG_KMS("bad modifier data for plane %d\n", i); | |
246 | return -EINVAL; | |
247 | } | |
248 | break; | |
249 | ||
250 | default: | |
251 | break; | |
252 | } | |
253 | } | |
254 | ||
d5493490 | 255 | for (i = info->num_planes; i < 4; i++) { |
7520a277 DV |
256 | if (r->modifier[i]) { |
257 | DRM_DEBUG_KMS("non-zero modifier for unused plane %d\n", i); | |
258 | return -EINVAL; | |
259 | } | |
260 | ||
261 | /* Pre-FB_MODIFIERS userspace didn't clear the structs properly. */ | |
262 | if (!(r->flags & DRM_MODE_FB_MODIFIERS)) | |
263 | continue; | |
264 | ||
265 | if (r->handles[i]) { | |
266 | DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i); | |
267 | return -EINVAL; | |
268 | } | |
269 | ||
270 | if (r->pitches[i]) { | |
271 | DRM_DEBUG_KMS("non-zero pitch for unused plane %d\n", i); | |
272 | return -EINVAL; | |
273 | } | |
274 | ||
275 | if (r->offsets[i]) { | |
276 | DRM_DEBUG_KMS("non-zero offset for unused plane %d\n", i); | |
277 | return -EINVAL; | |
278 | } | |
279 | } | |
280 | ||
281 | return 0; | |
282 | } | |
283 | ||
284 | struct drm_framebuffer * | |
285 | drm_internal_framebuffer_create(struct drm_device *dev, | |
286 | const struct drm_mode_fb_cmd2 *r, | |
287 | struct drm_file *file_priv) | |
288 | { | |
289 | struct drm_mode_config *config = &dev->mode_config; | |
290 | struct drm_framebuffer *fb; | |
291 | int ret; | |
292 | ||
293 | if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) { | |
294 | DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags); | |
295 | return ERR_PTR(-EINVAL); | |
296 | } | |
297 | ||
298 | if ((config->min_width > r->width) || (r->width > config->max_width)) { | |
299 | DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n", | |
300 | r->width, config->min_width, config->max_width); | |
301 | return ERR_PTR(-EINVAL); | |
302 | } | |
303 | if ((config->min_height > r->height) || (r->height > config->max_height)) { | |
304 | DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n", | |
305 | r->height, config->min_height, config->max_height); | |
306 | return ERR_PTR(-EINVAL); | |
307 | } | |
308 | ||
309 | if (r->flags & DRM_MODE_FB_MODIFIERS && | |
310 | !dev->mode_config.allow_fb_modifiers) { | |
311 | DRM_DEBUG_KMS("driver does not support fb modifiers\n"); | |
312 | return ERR_PTR(-EINVAL); | |
313 | } | |
314 | ||
6a0f9ebf | 315 | ret = framebuffer_check(dev, r); |
7520a277 DV |
316 | if (ret) |
317 | return ERR_PTR(ret); | |
318 | ||
319 | fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); | |
320 | if (IS_ERR(fb)) { | |
321 | DRM_DEBUG_KMS("could not create framebuffer\n"); | |
322 | return fb; | |
323 | } | |
324 | ||
325 | return fb; | |
326 | } | |
9aefed1f | 327 | EXPORT_SYMBOL_FOR_TESTS_ONLY(drm_internal_framebuffer_create); |
7520a277 DV |
328 | |
329 | /** | |
330 | * drm_mode_addfb2 - add an FB to the graphics configuration | |
331 | * @dev: drm device for the ioctl | |
332 | * @data: data pointer for the ioctl | |
333 | * @file_priv: drm file for the ioctl call | |
334 | * | |
335 | * Add a new FB to the specified CRTC, given a user request with format. This is | |
336 | * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers | |
337 | * and uses fourcc codes as pixel format specifiers. | |
338 | * | |
339 | * Called by the user via ioctl. | |
340 | * | |
341 | * Returns: | |
342 | * Zero on success, negative errno on failure. | |
343 | */ | |
344 | int drm_mode_addfb2(struct drm_device *dev, | |
345 | void *data, struct drm_file *file_priv) | |
346 | { | |
347 | struct drm_mode_fb_cmd2 *r = data; | |
348 | struct drm_framebuffer *fb; | |
349 | ||
350 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 351 | return -EOPNOTSUPP; |
7520a277 DV |
352 | |
353 | fb = drm_internal_framebuffer_create(dev, r, file_priv); | |
354 | if (IS_ERR(fb)) | |
355 | return PTR_ERR(fb); | |
356 | ||
357 | DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); | |
358 | r->fb_id = fb->base.id; | |
359 | ||
360 | /* Transfer ownership to the filp for reaping on close */ | |
361 | mutex_lock(&file_priv->fbs_lock); | |
362 | list_add(&fb->filp_head, &file_priv->fbs); | |
363 | mutex_unlock(&file_priv->fbs_lock); | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
eae06120 GH |
368 | int drm_mode_addfb2_ioctl(struct drm_device *dev, |
369 | void *data, struct drm_file *file_priv) | |
370 | { | |
371 | #ifdef __BIG_ENDIAN | |
372 | if (!dev->mode_config.quirk_addfb_prefer_host_byte_order) { | |
373 | /* | |
374 | * Drivers must set the | |
375 | * quirk_addfb_prefer_host_byte_order quirk to make | |
376 | * the drm_mode_addfb() compat code work correctly on | |
377 | * bigendian machines. | |
378 | * | |
379 | * If they don't they interpret pixel_format values | |
380 | * incorrectly for bug compatibility, which in turn | |
381 | * implies the ADDFB2 ioctl does not work correctly | |
382 | * then. So block it to make userspace fallback to | |
383 | * ADDFB. | |
384 | */ | |
385 | DRM_DEBUG_KMS("addfb2 broken on bigendian"); | |
69fdf420 | 386 | return -EOPNOTSUPP; |
eae06120 GH |
387 | } |
388 | #endif | |
389 | return drm_mode_addfb2(dev, data, file_priv); | |
390 | } | |
391 | ||
7520a277 DV |
392 | struct drm_mode_rmfb_work { |
393 | struct work_struct work; | |
394 | struct list_head fbs; | |
395 | }; | |
396 | ||
397 | static void drm_mode_rmfb_work_fn(struct work_struct *w) | |
398 | { | |
399 | struct drm_mode_rmfb_work *arg = container_of(w, typeof(*arg), work); | |
400 | ||
401 | while (!list_empty(&arg->fbs)) { | |
402 | struct drm_framebuffer *fb = | |
403 | list_first_entry(&arg->fbs, typeof(*fb), filp_head); | |
404 | ||
405 | list_del_init(&fb->filp_head); | |
406 | drm_framebuffer_remove(fb); | |
407 | } | |
408 | } | |
409 | ||
410 | /** | |
411 | * drm_mode_rmfb - remove an FB from the configuration | |
d30827ce NT |
412 | * @dev: drm device |
413 | * @fb_id: id of framebuffer to remove | |
414 | * @file_priv: drm file | |
7520a277 | 415 | * |
d30827ce | 416 | * Remove the specified FB. |
7520a277 | 417 | * |
d30827ce | 418 | * Called by the user via ioctl, or by an in-kernel client. |
7520a277 DV |
419 | * |
420 | * Returns: | |
421 | * Zero on success, negative errno on failure. | |
422 | */ | |
d30827ce NT |
423 | int drm_mode_rmfb(struct drm_device *dev, u32 fb_id, |
424 | struct drm_file *file_priv) | |
7520a277 DV |
425 | { |
426 | struct drm_framebuffer *fb = NULL; | |
427 | struct drm_framebuffer *fbl = NULL; | |
7520a277 DV |
428 | int found = 0; |
429 | ||
430 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 431 | return -EOPNOTSUPP; |
7520a277 | 432 | |
d30827ce | 433 | fb = drm_framebuffer_lookup(dev, file_priv, fb_id); |
7520a277 DV |
434 | if (!fb) |
435 | return -ENOENT; | |
436 | ||
437 | mutex_lock(&file_priv->fbs_lock); | |
438 | list_for_each_entry(fbl, &file_priv->fbs, filp_head) | |
439 | if (fb == fbl) | |
440 | found = 1; | |
441 | if (!found) { | |
442 | mutex_unlock(&file_priv->fbs_lock); | |
443 | goto fail_unref; | |
444 | } | |
445 | ||
446 | list_del_init(&fb->filp_head); | |
447 | mutex_unlock(&file_priv->fbs_lock); | |
448 | ||
449 | /* drop the reference we picked up in framebuffer lookup */ | |
a4a69da0 | 450 | drm_framebuffer_put(fb); |
7520a277 DV |
451 | |
452 | /* | |
453 | * we now own the reference that was stored in the fbs list | |
454 | * | |
455 | * drm_framebuffer_remove may fail with -EINTR on pending signals, | |
456 | * so run this in a separate stack as there's no way to correctly | |
457 | * handle this after the fb is already removed from the lookup table. | |
458 | */ | |
459 | if (drm_framebuffer_read_refcount(fb) > 1) { | |
460 | struct drm_mode_rmfb_work arg; | |
461 | ||
462 | INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn); | |
463 | INIT_LIST_HEAD(&arg.fbs); | |
464 | list_add_tail(&fb->filp_head, &arg.fbs); | |
465 | ||
466 | schedule_work(&arg.work); | |
467 | flush_work(&arg.work); | |
468 | destroy_work_on_stack(&arg.work); | |
469 | } else | |
a4a69da0 | 470 | drm_framebuffer_put(fb); |
7520a277 DV |
471 | |
472 | return 0; | |
473 | ||
474 | fail_unref: | |
a4a69da0 | 475 | drm_framebuffer_put(fb); |
7520a277 DV |
476 | return -ENOENT; |
477 | } | |
478 | ||
d30827ce NT |
479 | int drm_mode_rmfb_ioctl(struct drm_device *dev, |
480 | void *data, struct drm_file *file_priv) | |
481 | { | |
482 | uint32_t *fb_id = data; | |
483 | ||
484 | return drm_mode_rmfb(dev, *fb_id, file_priv); | |
485 | } | |
486 | ||
7520a277 DV |
487 | /** |
488 | * drm_mode_getfb - get FB info | |
489 | * @dev: drm device for the ioctl | |
490 | * @data: data pointer for the ioctl | |
491 | * @file_priv: drm file for the ioctl call | |
492 | * | |
493 | * Lookup the FB given its ID and return info about it. | |
494 | * | |
495 | * Called by the user via ioctl. | |
496 | * | |
497 | * Returns: | |
498 | * Zero on success, negative errno on failure. | |
499 | */ | |
500 | int drm_mode_getfb(struct drm_device *dev, | |
501 | void *data, struct drm_file *file_priv) | |
502 | { | |
503 | struct drm_mode_fb_cmd *r = data; | |
504 | struct drm_framebuffer *fb; | |
505 | int ret; | |
506 | ||
507 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 508 | return -EOPNOTSUPP; |
7520a277 | 509 | |
418da172 | 510 | fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id); |
7520a277 DV |
511 | if (!fb) |
512 | return -ENOENT; | |
513 | ||
b24791fe DS |
514 | /* Multi-planar framebuffers need getfb2. */ |
515 | if (fb->format->num_planes > 1) { | |
516 | ret = -EINVAL; | |
517 | goto out; | |
518 | } | |
519 | ||
487da617 DS |
520 | if (!fb->funcs->create_handle) { |
521 | ret = -ENODEV; | |
522 | goto out; | |
523 | } | |
524 | ||
7520a277 DV |
525 | r->height = fb->height; |
526 | r->width = fb->width; | |
b00c600e | 527 | r->depth = fb->format->depth; |
272725c7 | 528 | r->bpp = fb->format->cpp[0] * 8; |
7520a277 | 529 | r->pitch = fb->pitches[0]; |
487da617 DS |
530 | |
531 | /* GET_FB() is an unprivileged ioctl so we must not return a | |
532 | * buffer-handle to non-master processes! For | |
533 | * backwards-compatibility reasons, we cannot make GET_FB() privileged, | |
534 | * so just return an invalid handle for non-masters. | |
535 | */ | |
0d49f303 | 536 | if (!drm_is_current_master(file_priv) && !capable(CAP_SYS_ADMIN)) { |
487da617 DS |
537 | r->handle = 0; |
538 | ret = 0; | |
539 | goto out; | |
7520a277 DV |
540 | } |
541 | ||
487da617 DS |
542 | ret = fb->funcs->create_handle(fb, file_priv, &r->handle); |
543 | ||
b24791fe | 544 | out: |
a4a69da0 | 545 | drm_framebuffer_put(fb); |
7520a277 DV |
546 | |
547 | return ret; | |
548 | } | |
549 | ||
550 | /** | |
551 | * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB | |
552 | * @dev: drm device for the ioctl | |
553 | * @data: data pointer for the ioctl | |
554 | * @file_priv: drm file for the ioctl call | |
555 | * | |
556 | * Lookup the FB and flush out the damaged area supplied by userspace as a clip | |
557 | * rectangle list. Generic userspace which does frontbuffer rendering must call | |
558 | * this ioctl to flush out the changes on manual-update display outputs, e.g. | |
559 | * usb display-link, mipi manual update panels or edp panel self refresh modes. | |
560 | * | |
561 | * Modesetting drivers which always update the frontbuffer do not need to | |
d574528a | 562 | * implement the corresponding &drm_framebuffer_funcs.dirty callback. |
7520a277 DV |
563 | * |
564 | * Called by the user via ioctl. | |
565 | * | |
566 | * Returns: | |
567 | * Zero on success, negative errno on failure. | |
568 | */ | |
569 | int drm_mode_dirtyfb_ioctl(struct drm_device *dev, | |
570 | void *data, struct drm_file *file_priv) | |
571 | { | |
572 | struct drm_clip_rect __user *clips_ptr; | |
573 | struct drm_clip_rect *clips = NULL; | |
574 | struct drm_mode_fb_dirty_cmd *r = data; | |
575 | struct drm_framebuffer *fb; | |
576 | unsigned flags; | |
577 | int num_clips; | |
578 | int ret; | |
579 | ||
580 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 581 | return -EOPNOTSUPP; |
7520a277 | 582 | |
418da172 | 583 | fb = drm_framebuffer_lookup(dev, file_priv, r->fb_id); |
7520a277 DV |
584 | if (!fb) |
585 | return -ENOENT; | |
586 | ||
587 | num_clips = r->num_clips; | |
588 | clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr; | |
589 | ||
590 | if (!num_clips != !clips_ptr) { | |
591 | ret = -EINVAL; | |
592 | goto out_err1; | |
593 | } | |
594 | ||
595 | flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags; | |
596 | ||
597 | /* If userspace annotates copy, clips must come in pairs */ | |
598 | if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) { | |
599 | ret = -EINVAL; | |
600 | goto out_err1; | |
601 | } | |
602 | ||
603 | if (num_clips && clips_ptr) { | |
604 | if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) { | |
605 | ret = -EINVAL; | |
606 | goto out_err1; | |
607 | } | |
608 | clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); | |
609 | if (!clips) { | |
610 | ret = -ENOMEM; | |
611 | goto out_err1; | |
612 | } | |
613 | ||
614 | ret = copy_from_user(clips, clips_ptr, | |
615 | num_clips * sizeof(*clips)); | |
616 | if (ret) { | |
617 | ret = -EFAULT; | |
618 | goto out_err2; | |
619 | } | |
620 | } | |
621 | ||
622 | if (fb->funcs->dirty) { | |
623 | ret = fb->funcs->dirty(fb, file_priv, flags, r->color, | |
624 | clips, num_clips); | |
625 | } else { | |
626 | ret = -ENOSYS; | |
627 | } | |
628 | ||
629 | out_err2: | |
630 | kfree(clips); | |
631 | out_err1: | |
a4a69da0 | 632 | drm_framebuffer_put(fb); |
7520a277 DV |
633 | |
634 | return ret; | |
635 | } | |
636 | ||
637 | /** | |
638 | * drm_fb_release - remove and free the FBs on this file | |
639 | * @priv: drm file for the ioctl | |
640 | * | |
641 | * Destroy all the FBs associated with @filp. | |
642 | * | |
643 | * Called by the user via ioctl. | |
644 | * | |
645 | * Returns: | |
646 | * Zero on success, negative errno on failure. | |
647 | */ | |
648 | void drm_fb_release(struct drm_file *priv) | |
649 | { | |
650 | struct drm_framebuffer *fb, *tfb; | |
651 | struct drm_mode_rmfb_work arg; | |
652 | ||
653 | INIT_LIST_HEAD(&arg.fbs); | |
654 | ||
655 | /* | |
656 | * When the file gets released that means no one else can access the fb | |
657 | * list any more, so no need to grab fpriv->fbs_lock. And we need to | |
658 | * avoid upsetting lockdep since the universal cursor code adds a | |
659 | * framebuffer while holding mutex locks. | |
660 | * | |
661 | * Note that a real deadlock between fpriv->fbs_lock and the modeset | |
662 | * locks is impossible here since no one else but this function can get | |
663 | * at it any more. | |
664 | */ | |
665 | list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { | |
666 | if (drm_framebuffer_read_refcount(fb) > 1) { | |
667 | list_move_tail(&fb->filp_head, &arg.fbs); | |
668 | } else { | |
669 | list_del_init(&fb->filp_head); | |
670 | ||
671 | /* This drops the fpriv->fbs reference. */ | |
a4a69da0 | 672 | drm_framebuffer_put(fb); |
7520a277 DV |
673 | } |
674 | } | |
675 | ||
676 | if (!list_empty(&arg.fbs)) { | |
677 | INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn); | |
678 | ||
679 | schedule_work(&arg.work); | |
680 | flush_work(&arg.work); | |
681 | destroy_work_on_stack(&arg.work); | |
682 | } | |
683 | } | |
684 | ||
685 | void drm_framebuffer_free(struct kref *kref) | |
686 | { | |
687 | struct drm_framebuffer *fb = | |
688 | container_of(kref, struct drm_framebuffer, base.refcount); | |
689 | struct drm_device *dev = fb->dev; | |
690 | ||
691 | /* | |
692 | * The lookup idr holds a weak reference, which has not necessarily been | |
693 | * removed at this point. Check for that. | |
694 | */ | |
695 | drm_mode_object_unregister(dev, &fb->base); | |
696 | ||
697 | fb->funcs->destroy(fb); | |
698 | } | |
699 | ||
700 | /** | |
701 | * drm_framebuffer_init - initialize a framebuffer | |
702 | * @dev: DRM device | |
703 | * @fb: framebuffer to be initialized | |
704 | * @funcs: ... with these functions | |
705 | * | |
706 | * Allocates an ID for the framebuffer's parent mode object, sets its mode | |
707 | * functions & device file and adds it to the master fd list. | |
708 | * | |
709 | * IMPORTANT: | |
710 | * This functions publishes the fb and makes it available for concurrent access | |
711 | * by other users. Which means by this point the fb _must_ be fully set up - | |
712 | * since all the fb attributes are invariant over its lifetime, no further | |
713 | * locking but only correct reference counting is required. | |
714 | * | |
715 | * Returns: | |
716 | * Zero on success, error code on failure. | |
717 | */ | |
718 | int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, | |
719 | const struct drm_framebuffer_funcs *funcs) | |
720 | { | |
721 | int ret; | |
722 | ||
570cec32 | 723 | if (WARN_ON_ONCE(fb->dev != dev || !fb->format)) |
95bce760 VS |
724 | return -EINVAL; |
725 | ||
7520a277 | 726 | INIT_LIST_HEAD(&fb->filp_head); |
95bce760 | 727 | |
7520a277 | 728 | fb->funcs = funcs; |
8d44e9e6 | 729 | strcpy(fb->comm, current->comm); |
7520a277 | 730 | |
2135ea7a TR |
731 | ret = __drm_mode_object_add(dev, &fb->base, DRM_MODE_OBJECT_FB, |
732 | false, drm_framebuffer_free); | |
7520a277 DV |
733 | if (ret) |
734 | goto out; | |
735 | ||
736 | mutex_lock(&dev->mode_config.fb_lock); | |
737 | dev->mode_config.num_fb++; | |
738 | list_add(&fb->head, &dev->mode_config.fb_list); | |
739 | mutex_unlock(&dev->mode_config.fb_lock); | |
740 | ||
741 | drm_mode_object_register(dev, &fb->base); | |
742 | out: | |
743 | return ret; | |
744 | } | |
745 | EXPORT_SYMBOL(drm_framebuffer_init); | |
746 | ||
747 | /** | |
748 | * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference | |
749 | * @dev: drm device | |
e7e62c7e | 750 | * @file_priv: drm file to check for lease against. |
7520a277 DV |
751 | * @id: id of the fb object |
752 | * | |
753 | * If successful, this grabs an additional reference to the framebuffer - | |
754 | * callers need to make sure to eventually unreference the returned framebuffer | |
a4a69da0 | 755 | * again, using drm_framebuffer_put(). |
7520a277 DV |
756 | */ |
757 | struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev, | |
418da172 | 758 | struct drm_file *file_priv, |
7520a277 DV |
759 | uint32_t id) |
760 | { | |
761 | struct drm_mode_object *obj; | |
762 | struct drm_framebuffer *fb = NULL; | |
763 | ||
418da172 | 764 | obj = __drm_mode_object_find(dev, file_priv, id, DRM_MODE_OBJECT_FB); |
7520a277 DV |
765 | if (obj) |
766 | fb = obj_to_fb(obj); | |
767 | return fb; | |
768 | } | |
769 | EXPORT_SYMBOL(drm_framebuffer_lookup); | |
770 | ||
771 | /** | |
772 | * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr | |
773 | * @fb: fb to unregister | |
774 | * | |
775 | * Drivers need to call this when cleaning up driver-private framebuffers, e.g. | |
776 | * those used for fbdev. Note that the caller must hold a reference of it's own, | |
777 | * i.e. the object may not be destroyed through this call (since it'll lead to a | |
778 | * locking inversion). | |
03e93ac7 RZ |
779 | * |
780 | * NOTE: This function is deprecated. For driver-private framebuffers it is not | |
781 | * recommended to embed a framebuffer struct info fbdev struct, instead, a | |
a4a69da0 TR |
782 | * framebuffer pointer is preferred and drm_framebuffer_put() should be called |
783 | * when the framebuffer is to be cleaned up. | |
7520a277 DV |
784 | */ |
785 | void drm_framebuffer_unregister_private(struct drm_framebuffer *fb) | |
786 | { | |
787 | struct drm_device *dev; | |
788 | ||
789 | if (!fb) | |
790 | return; | |
791 | ||
792 | dev = fb->dev; | |
793 | ||
794 | /* Mark fb as reaped and drop idr ref. */ | |
795 | drm_mode_object_unregister(dev, &fb->base); | |
796 | } | |
797 | EXPORT_SYMBOL(drm_framebuffer_unregister_private); | |
798 | ||
799 | /** | |
800 | * drm_framebuffer_cleanup - remove a framebuffer object | |
801 | * @fb: framebuffer to remove | |
802 | * | |
803 | * Cleanup framebuffer. This function is intended to be used from the drivers | |
d574528a DV |
804 | * &drm_framebuffer_funcs.destroy callback. It can also be used to clean up |
805 | * driver private framebuffers embedded into a larger structure. | |
7520a277 | 806 | * |
d574528a | 807 | * Note that this function does not remove the fb from active usage - if it is |
7520a277 DV |
808 | * still used anywhere, hilarity can ensue since userspace could call getfb on |
809 | * the id and get back -EINVAL. Obviously no concern at driver unload time. | |
810 | * | |
811 | * Also, the framebuffer will not be removed from the lookup idr - for | |
812 | * user-created framebuffers this will happen in in the rmfb ioctl. For | |
813 | * driver-private objects (e.g. for fbdev) drivers need to explicitly call | |
814 | * drm_framebuffer_unregister_private. | |
815 | */ | |
816 | void drm_framebuffer_cleanup(struct drm_framebuffer *fb) | |
817 | { | |
818 | struct drm_device *dev = fb->dev; | |
819 | ||
820 | mutex_lock(&dev->mode_config.fb_lock); | |
821 | list_del(&fb->head); | |
822 | dev->mode_config.num_fb--; | |
823 | mutex_unlock(&dev->mode_config.fb_lock); | |
824 | } | |
825 | EXPORT_SYMBOL(drm_framebuffer_cleanup); | |
826 | ||
941b8caa DV |
827 | static int atomic_remove_fb(struct drm_framebuffer *fb) |
828 | { | |
829 | struct drm_modeset_acquire_ctx ctx; | |
830 | struct drm_device *dev = fb->dev; | |
831 | struct drm_atomic_state *state; | |
832 | struct drm_plane *plane; | |
833 | struct drm_connector *conn; | |
834 | struct drm_connector_state *conn_state; | |
846c7dfc | 835 | int i, ret; |
941b8caa | 836 | unsigned plane_mask; |
846c7dfc | 837 | bool disable_crtcs = false; |
941b8caa | 838 | |
846c7dfc | 839 | retry_disable: |
941b8caa | 840 | drm_modeset_acquire_init(&ctx, 0); |
846c7dfc ML |
841 | |
842 | state = drm_atomic_state_alloc(dev); | |
843 | if (!state) { | |
844 | ret = -ENOMEM; | |
845 | goto out; | |
846 | } | |
941b8caa DV |
847 | state->acquire_ctx = &ctx; |
848 | ||
849 | retry: | |
850 | plane_mask = 0; | |
851 | ret = drm_modeset_lock_all_ctx(dev, &ctx); | |
852 | if (ret) | |
853 | goto unlock; | |
854 | ||
855 | drm_for_each_plane(plane, dev) { | |
856 | struct drm_plane_state *plane_state; | |
857 | ||
858 | if (plane->state->fb != fb) | |
859 | continue; | |
860 | ||
861 | plane_state = drm_atomic_get_plane_state(state, plane); | |
862 | if (IS_ERR(plane_state)) { | |
863 | ret = PTR_ERR(plane_state); | |
864 | goto unlock; | |
865 | } | |
866 | ||
846c7dfc | 867 | if (disable_crtcs && plane_state->crtc->primary == plane) { |
941b8caa DV |
868 | struct drm_crtc_state *crtc_state; |
869 | ||
870 | crtc_state = drm_atomic_get_existing_crtc_state(state, plane_state->crtc); | |
871 | ||
872 | ret = drm_atomic_add_affected_connectors(state, plane_state->crtc); | |
873 | if (ret) | |
874 | goto unlock; | |
875 | ||
876 | crtc_state->active = false; | |
877 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); | |
878 | if (ret) | |
879 | goto unlock; | |
880 | } | |
881 | ||
882 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
883 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
884 | if (ret) | |
885 | goto unlock; | |
886 | ||
62f77ad0 | 887 | plane_mask |= drm_plane_mask(plane); |
941b8caa DV |
888 | } |
889 | ||
846c7dfc | 890 | /* This list is only filled when disable_crtcs is set. */ |
0c3eb123 | 891 | for_each_new_connector_in_state(state, conn, conn_state, i) { |
941b8caa DV |
892 | ret = drm_atomic_set_crtc_for_connector(conn_state, NULL); |
893 | ||
894 | if (ret) | |
895 | goto unlock; | |
896 | } | |
897 | ||
898 | if (plane_mask) | |
899 | ret = drm_atomic_commit(state); | |
900 | ||
901 | unlock: | |
941b8caa | 902 | if (ret == -EDEADLK) { |
4086d90c | 903 | drm_atomic_state_clear(state); |
941b8caa DV |
904 | drm_modeset_backoff(&ctx); |
905 | goto retry; | |
906 | } | |
907 | ||
908 | drm_atomic_state_put(state); | |
909 | ||
846c7dfc | 910 | out: |
941b8caa DV |
911 | drm_modeset_drop_locks(&ctx); |
912 | drm_modeset_acquire_fini(&ctx); | |
913 | ||
846c7dfc ML |
914 | if (ret == -EINVAL && !disable_crtcs) { |
915 | disable_crtcs = true; | |
916 | goto retry_disable; | |
917 | } | |
918 | ||
941b8caa DV |
919 | return ret; |
920 | } | |
921 | ||
922 | static void legacy_remove_fb(struct drm_framebuffer *fb) | |
923 | { | |
924 | struct drm_device *dev = fb->dev; | |
925 | struct drm_crtc *crtc; | |
926 | struct drm_plane *plane; | |
927 | ||
928 | drm_modeset_lock_all(dev); | |
929 | /* remove from any CRTC */ | |
930 | drm_for_each_crtc(crtc, dev) { | |
931 | if (crtc->primary->fb == fb) { | |
932 | /* should turn off the crtc */ | |
933 | if (drm_crtc_force_disable(crtc)) | |
934 | DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc); | |
935 | } | |
936 | } | |
937 | ||
938 | drm_for_each_plane(plane, dev) { | |
939 | if (plane->fb == fb) | |
940 | drm_plane_force_disable(plane); | |
941 | } | |
942 | drm_modeset_unlock_all(dev); | |
943 | } | |
944 | ||
7520a277 DV |
945 | /** |
946 | * drm_framebuffer_remove - remove and unreference a framebuffer object | |
947 | * @fb: framebuffer to remove | |
948 | * | |
949 | * Scans all the CRTCs and planes in @dev's mode_config. If they're | |
950 | * using @fb, removes it, setting it to NULL. Then drops the reference to the | |
951 | * passed-in framebuffer. Might take the modeset locks. | |
952 | * | |
953 | * Note that this function optimizes the cleanup away if the caller holds the | |
954 | * last reference to the framebuffer. It is also guaranteed to not take the | |
955 | * modeset locks in this case. | |
956 | */ | |
957 | void drm_framebuffer_remove(struct drm_framebuffer *fb) | |
958 | { | |
959 | struct drm_device *dev; | |
7520a277 DV |
960 | |
961 | if (!fb) | |
962 | return; | |
963 | ||
964 | dev = fb->dev; | |
965 | ||
966 | WARN_ON(!list_empty(&fb->filp_head)); | |
967 | ||
968 | /* | |
969 | * drm ABI mandates that we remove any deleted framebuffers from active | |
970 | * useage. But since most sane clients only remove framebuffers they no | |
971 | * longer need, try to optimize this away. | |
972 | * | |
973 | * Since we're holding a reference ourselves, observing a refcount of 1 | |
974 | * means that we're the last holder and can skip it. Also, the refcount | |
975 | * can never increase from 1 again, so we don't need any barriers or | |
976 | * locks. | |
977 | * | |
978 | * Note that userspace could try to race with use and instate a new | |
979 | * usage _after_ we've cleared all current ones. End result will be an | |
980 | * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot | |
981 | * in this manner. | |
982 | */ | |
983 | if (drm_framebuffer_read_refcount(fb) > 1) { | |
db8f6403 | 984 | if (drm_drv_uses_atomic_modeset(dev)) { |
941b8caa | 985 | int ret = atomic_remove_fb(fb); |
db8f6403 | 986 | WARN(ret, "atomic remove_fb failed with %i\n", ret); |
941b8caa DV |
987 | } else |
988 | legacy_remove_fb(fb); | |
7520a277 DV |
989 | } |
990 | ||
a4a69da0 | 991 | drm_framebuffer_put(fb); |
7520a277 DV |
992 | } |
993 | EXPORT_SYMBOL(drm_framebuffer_remove); | |
8f8f6a6c VS |
994 | |
995 | /** | |
996 | * drm_framebuffer_plane_width - width of the plane given the first plane | |
997 | * @width: width of the first plane | |
998 | * @fb: the framebuffer | |
999 | * @plane: plane index | |
1000 | * | |
1001 | * Returns: | |
1002 | * The width of @plane, given that the width of the first plane is @width. | |
1003 | */ | |
1004 | int drm_framebuffer_plane_width(int width, | |
1005 | const struct drm_framebuffer *fb, int plane) | |
1006 | { | |
1007 | if (plane >= fb->format->num_planes) | |
1008 | return 0; | |
1009 | ||
568c5e45 | 1010 | return fb_plane_width(width, fb->format, plane); |
8f8f6a6c VS |
1011 | } |
1012 | EXPORT_SYMBOL(drm_framebuffer_plane_width); | |
1013 | ||
1014 | /** | |
1015 | * drm_framebuffer_plane_height - height of the plane given the first plane | |
1016 | * @height: height of the first plane | |
1017 | * @fb: the framebuffer | |
1018 | * @plane: plane index | |
1019 | * | |
1020 | * Returns: | |
1021 | * The height of @plane, given that the height of the first plane is @height. | |
1022 | */ | |
1023 | int drm_framebuffer_plane_height(int height, | |
1024 | const struct drm_framebuffer *fb, int plane) | |
1025 | { | |
1026 | if (plane >= fb->format->num_planes) | |
1027 | return 0; | |
1028 | ||
568c5e45 | 1029 | return fb_plane_height(height, fb->format, plane); |
8f8f6a6c VS |
1030 | } |
1031 | EXPORT_SYMBOL(drm_framebuffer_plane_height); | |
45d58b40 NT |
1032 | |
1033 | void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent, | |
1034 | const struct drm_framebuffer *fb) | |
1035 | { | |
1036 | struct drm_format_name_buf format_name; | |
1037 | unsigned int i; | |
1038 | ||
8d44e9e6 | 1039 | drm_printf_indent(p, indent, "allocated by = %s\n", fb->comm); |
45d58b40 NT |
1040 | drm_printf_indent(p, indent, "refcount=%u\n", |
1041 | drm_framebuffer_read_refcount(fb)); | |
1042 | drm_printf_indent(p, indent, "format=%s\n", | |
1043 | drm_get_format_name(fb->format->format, &format_name)); | |
1044 | drm_printf_indent(p, indent, "modifier=0x%llx\n", fb->modifier); | |
1045 | drm_printf_indent(p, indent, "size=%ux%u\n", fb->width, fb->height); | |
1046 | drm_printf_indent(p, indent, "layers:\n"); | |
1047 | ||
1048 | for (i = 0; i < fb->format->num_planes; i++) { | |
1049 | drm_printf_indent(p, indent + 1, "size[%u]=%dx%d\n", i, | |
1050 | drm_framebuffer_plane_width(fb->width, fb, i), | |
1051 | drm_framebuffer_plane_height(fb->height, fb, i)); | |
1052 | drm_printf_indent(p, indent + 1, "pitch[%u]=%u\n", i, fb->pitches[i]); | |
1053 | drm_printf_indent(p, indent + 1, "offset[%u]=%u\n", i, fb->offsets[i]); | |
1054 | drm_printf_indent(p, indent + 1, "obj[%u]:%s\n", i, | |
1055 | fb->obj[i] ? "" : "(null)"); | |
1056 | if (fb->obj[i]) | |
1057 | drm_gem_print_info(p, indent + 2, fb->obj[i]); | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | #ifdef CONFIG_DEBUG_FS | |
1062 | static int drm_framebuffer_info(struct seq_file *m, void *data) | |
1063 | { | |
1064 | struct drm_info_node *node = m->private; | |
1065 | struct drm_device *dev = node->minor->dev; | |
1066 | struct drm_printer p = drm_seq_file_printer(m); | |
1067 | struct drm_framebuffer *fb; | |
1068 | ||
1069 | mutex_lock(&dev->mode_config.fb_lock); | |
1070 | drm_for_each_fb(fb, dev) { | |
1071 | drm_printf(&p, "framebuffer[%u]:\n", fb->base.id); | |
1072 | drm_framebuffer_print_info(&p, 1, fb); | |
1073 | } | |
1074 | mutex_unlock(&dev->mode_config.fb_lock); | |
1075 | ||
1076 | return 0; | |
1077 | } | |
1078 | ||
1079 | static const struct drm_info_list drm_framebuffer_debugfs_list[] = { | |
1080 | { "framebuffer", drm_framebuffer_info, 0 }, | |
1081 | }; | |
1082 | ||
1083 | int drm_framebuffer_debugfs_init(struct drm_minor *minor) | |
1084 | { | |
1085 | return drm_debugfs_create_files(drm_framebuffer_debugfs_list, | |
1086 | ARRAY_SIZE(drm_framebuffer_debugfs_list), | |
1087 | minor->debugfs_root, minor); | |
1088 | } | |
1089 | #endif |