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dff96888 | 1 | // SPDX-License-Identifier: GPL-2.0 OR MIT |
fb1d9738 JB |
2 | /************************************************************************** |
3 | * | |
09881d29 | 4 | * Copyright 2009-2023 VMware, Inc., Palo Alto, CA., USA |
fb1d9738 JB |
5 | * |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation the rights to use, copy, modify, merge, publish, | |
10 | * distribute, sub license, and/or sell copies of the Software, and to | |
11 | * permit persons to whom the Software is furnished to do so, subject to | |
12 | * the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | **************************************************************************/ | |
09881d29 ZR |
27 | #include "vmwgfx_bo.h" |
28 | #include "vmwgfx_drv.h" | |
fb1d9738 | 29 | |
8ce75f8a SY |
30 | #include "device_include/svga_overlay.h" |
31 | #include "device_include/svga_escape.h" | |
fb1d9738 | 32 | |
09881d29 | 33 | #include <drm/ttm/ttm_placement.h> |
6ae8748b | 34 | |
fb1d9738 | 35 | #define VMW_MAX_NUM_STREAMS 1 |
dcb52271 | 36 | #define VMW_OVERLAY_CAP_MASK (SVGA_FIFO_CAP_VIDEO | SVGA_FIFO_CAP_ESCAPE) |
fb1d9738 JB |
37 | |
38 | struct vmw_stream { | |
09881d29 | 39 | struct vmw_bo *buf; |
fb1d9738 JB |
40 | bool claimed; |
41 | bool paused; | |
42 | struct drm_vmw_control_stream_arg saved; | |
43 | }; | |
44 | ||
3a839da0 | 45 | /* |
fb1d9738 JB |
46 | * Overlay control |
47 | */ | |
48 | struct vmw_overlay { | |
49 | /* | |
50 | * Each stream is a single overlay. In Xv these are called ports. | |
51 | */ | |
52 | struct mutex mutex; | |
53 | struct vmw_stream stream[VMW_MAX_NUM_STREAMS]; | |
54 | }; | |
55 | ||
fb1d9738 JB |
56 | struct vmw_escape_header { |
57 | uint32_t cmd; | |
58 | SVGAFifoCmdEscape body; | |
59 | }; | |
60 | ||
61 | struct vmw_escape_video_flush { | |
62 | struct vmw_escape_header escape; | |
63 | SVGAEscapeVideoFlush flush; | |
64 | }; | |
65 | ||
66 | static inline void fill_escape(struct vmw_escape_header *header, | |
67 | uint32_t size) | |
68 | { | |
69 | header->cmd = SVGA_CMD_ESCAPE; | |
70 | header->body.nsid = SVGA_ESCAPE_NSID_VMWARE; | |
71 | header->body.size = size; | |
72 | } | |
73 | ||
74 | static inline void fill_flush(struct vmw_escape_video_flush *cmd, | |
75 | uint32_t stream_id) | |
76 | { | |
77 | fill_escape(&cmd->escape, sizeof(cmd->flush)); | |
78 | cmd->flush.cmdType = SVGA_ESCAPE_VMWARE_VIDEO_FLUSH; | |
79 | cmd->flush.streamId = stream_id; | |
80 | } | |
81 | ||
3a839da0 | 82 | /* |
fb1d9738 JB |
83 | * Send put command to hw. |
84 | * | |
85 | * Returns | |
86 | * -ERESTARTSYS if interrupted by a signal. | |
87 | */ | |
88 | static int vmw_overlay_send_put(struct vmw_private *dev_priv, | |
09881d29 | 89 | struct vmw_bo *buf, |
fb1d9738 JB |
90 | struct drm_vmw_control_stream_arg *arg, |
91 | bool interruptible) | |
92 | { | |
44031d25 JB |
93 | struct vmw_escape_video_flush *flush; |
94 | size_t fifo_size; | |
cb372a50 | 95 | bool have_so = (dev_priv->active_display_unit != vmw_du_legacy); |
44031d25 | 96 | int i, num_items; |
b37a6b9a | 97 | SVGAGuestPtr ptr; |
44031d25 | 98 | |
fb1d9738 JB |
99 | struct { |
100 | struct vmw_escape_header escape; | |
101 | struct { | |
44031d25 JB |
102 | uint32_t cmdType; |
103 | uint32_t streamId; | |
104 | } header; | |
fb1d9738 | 105 | } *cmds; |
44031d25 JB |
106 | struct { |
107 | uint32_t registerId; | |
108 | uint32_t value; | |
109 | } *items; | |
fb1d9738 | 110 | |
44031d25 JB |
111 | /* defines are a index needs + 1 */ |
112 | if (have_so) | |
113 | num_items = SVGA_VIDEO_DST_SCREEN_ID + 1; | |
114 | else | |
115 | num_items = SVGA_VIDEO_PITCH_3 + 1; | |
116 | ||
117 | fifo_size = sizeof(*cmds) + sizeof(*flush) + sizeof(*items) * num_items; | |
118 | ||
8426ed9c | 119 | cmds = VMW_CMD_RESERVE(dev_priv, fifo_size); |
44031d25 JB |
120 | /* hardware has hung, can't do anything here */ |
121 | if (!cmds) | |
122 | return -ENOMEM; | |
123 | ||
124 | items = (typeof(items))&cmds[1]; | |
125 | flush = (struct vmw_escape_video_flush *)&items[num_items]; | |
126 | ||
127 | /* the size is header + number of items */ | |
128 | fill_escape(&cmds->escape, sizeof(*items) * (num_items + 1)); | |
129 | ||
130 | cmds->header.cmdType = SVGA_ESCAPE_VMWARE_VIDEO_SET_REGS; | |
131 | cmds->header.streamId = arg->stream_id; | |
132 | ||
133 | /* the IDs are neatly numbered */ | |
134 | for (i = 0; i < num_items; i++) | |
135 | items[i].registerId = i; | |
136 | ||
668b2066 | 137 | vmw_bo_get_guest_ptr(&buf->tbo, &ptr); |
b37a6b9a | 138 | ptr.offset += arg->offset; |
44031d25 JB |
139 | |
140 | items[SVGA_VIDEO_ENABLED].value = true; | |
141 | items[SVGA_VIDEO_FLAGS].value = arg->flags; | |
b37a6b9a | 142 | items[SVGA_VIDEO_DATA_OFFSET].value = ptr.offset; |
44031d25 JB |
143 | items[SVGA_VIDEO_FORMAT].value = arg->format; |
144 | items[SVGA_VIDEO_COLORKEY].value = arg->color_key; | |
145 | items[SVGA_VIDEO_SIZE].value = arg->size; | |
146 | items[SVGA_VIDEO_WIDTH].value = arg->width; | |
147 | items[SVGA_VIDEO_HEIGHT].value = arg->height; | |
148 | items[SVGA_VIDEO_SRC_X].value = arg->src.x; | |
149 | items[SVGA_VIDEO_SRC_Y].value = arg->src.y; | |
150 | items[SVGA_VIDEO_SRC_WIDTH].value = arg->src.w; | |
151 | items[SVGA_VIDEO_SRC_HEIGHT].value = arg->src.h; | |
152 | items[SVGA_VIDEO_DST_X].value = arg->dst.x; | |
153 | items[SVGA_VIDEO_DST_Y].value = arg->dst.y; | |
154 | items[SVGA_VIDEO_DST_WIDTH].value = arg->dst.w; | |
155 | items[SVGA_VIDEO_DST_HEIGHT].value = arg->dst.h; | |
156 | items[SVGA_VIDEO_PITCH_1].value = arg->pitch[0]; | |
157 | items[SVGA_VIDEO_PITCH_2].value = arg->pitch[1]; | |
158 | items[SVGA_VIDEO_PITCH_3].value = arg->pitch[2]; | |
159 | if (have_so) { | |
b37a6b9a | 160 | items[SVGA_VIDEO_DATA_GMRID].value = ptr.gmrId; |
44031d25 | 161 | items[SVGA_VIDEO_DST_SCREEN_ID].value = SVGA_ID_INVALID; |
fb1d9738 JB |
162 | } |
163 | ||
44031d25 | 164 | fill_flush(flush, arg->stream_id); |
fb1d9738 | 165 | |
8426ed9c | 166 | vmw_cmd_commit(dev_priv, fifo_size); |
fb1d9738 JB |
167 | |
168 | return 0; | |
169 | } | |
170 | ||
3a839da0 | 171 | /* |
fb1d9738 JB |
172 | * Send stop command to hw. |
173 | * | |
174 | * Returns | |
175 | * -ERESTARTSYS if interrupted by a signal. | |
176 | */ | |
177 | static int vmw_overlay_send_stop(struct vmw_private *dev_priv, | |
178 | uint32_t stream_id, | |
179 | bool interruptible) | |
180 | { | |
181 | struct { | |
182 | struct vmw_escape_header escape; | |
183 | SVGAEscapeVideoSetRegs body; | |
184 | struct vmw_escape_video_flush flush; | |
185 | } *cmds; | |
186 | int ret; | |
187 | ||
188 | for (;;) { | |
8426ed9c | 189 | cmds = VMW_CMD_RESERVE(dev_priv, sizeof(*cmds)); |
fb1d9738 JB |
190 | if (cmds) |
191 | break; | |
192 | ||
193 | ret = vmw_fallback_wait(dev_priv, false, true, 0, | |
194 | interruptible, 3*HZ); | |
195 | if (interruptible && ret == -ERESTARTSYS) | |
196 | return ret; | |
197 | else | |
198 | BUG_ON(ret != 0); | |
199 | } | |
200 | ||
201 | fill_escape(&cmds->escape, sizeof(cmds->body)); | |
202 | cmds->body.header.cmdType = SVGA_ESCAPE_VMWARE_VIDEO_SET_REGS; | |
203 | cmds->body.header.streamId = stream_id; | |
204 | cmds->body.items[0].registerId = SVGA_VIDEO_ENABLED; | |
205 | cmds->body.items[0].value = false; | |
206 | fill_flush(&cmds->flush, stream_id); | |
207 | ||
8426ed9c | 208 | vmw_cmd_commit(dev_priv, sizeof(*cmds)); |
fb1d9738 JB |
209 | |
210 | return 0; | |
211 | } | |
212 | ||
3a839da0 | 213 | /* |
44031d25 | 214 | * Move a buffer to vram or gmr if @pin is set, else unpin the buffer. |
d991ef03 | 215 | * |
44031d25 JB |
216 | * With the introduction of screen objects buffers could now be |
217 | * used with GMRs instead of being locked to vram. | |
d991ef03 JB |
218 | */ |
219 | static int vmw_overlay_move_buffer(struct vmw_private *dev_priv, | |
09881d29 | 220 | struct vmw_bo *buf, |
d991ef03 JB |
221 | bool pin, bool inter) |
222 | { | |
44031d25 | 223 | if (!pin) |
f1d34bfd | 224 | return vmw_bo_unpin(dev_priv, buf, inter); |
44031d25 | 225 | |
c8261a96 | 226 | if (dev_priv->active_display_unit == vmw_du_legacy) |
f1d34bfd | 227 | return vmw_bo_pin_in_vram(dev_priv, buf, inter); |
44031d25 | 228 | |
f1d34bfd | 229 | return vmw_bo_pin_in_vram_or_gmr(dev_priv, buf, inter); |
d991ef03 JB |
230 | } |
231 | ||
3a839da0 | 232 | /* |
fb1d9738 JB |
233 | * Stop or pause a stream. |
234 | * | |
235 | * If the stream is paused the no evict flag is removed from the buffer | |
236 | * but left in vram. This allows for instance mode_set to evict it | |
237 | * should it need to. | |
238 | * | |
239 | * The caller must hold the overlay lock. | |
240 | * | |
241 | * @stream_id which stream to stop/pause. | |
242 | * @pause true to pause, false to stop completely. | |
243 | */ | |
244 | static int vmw_overlay_stop(struct vmw_private *dev_priv, | |
245 | uint32_t stream_id, bool pause, | |
246 | bool interruptible) | |
247 | { | |
248 | struct vmw_overlay *overlay = dev_priv->overlay_priv; | |
249 | struct vmw_stream *stream = &overlay->stream[stream_id]; | |
250 | int ret; | |
251 | ||
252 | /* no buffer attached the stream is completely stopped */ | |
253 | if (!stream->buf) | |
254 | return 0; | |
255 | ||
256 | /* If the stream is paused this is already done */ | |
257 | if (!stream->paused) { | |
258 | ret = vmw_overlay_send_stop(dev_priv, stream_id, | |
259 | interruptible); | |
260 | if (ret) | |
261 | return ret; | |
262 | ||
263 | /* We just remove the NO_EVICT flag so no -ENOMEM */ | |
d991ef03 JB |
264 | ret = vmw_overlay_move_buffer(dev_priv, stream->buf, false, |
265 | interruptible); | |
fb1d9738 JB |
266 | if (interruptible && ret == -ERESTARTSYS) |
267 | return ret; | |
268 | else | |
269 | BUG_ON(ret != 0); | |
270 | } | |
271 | ||
272 | if (!pause) { | |
f1d34bfd | 273 | vmw_bo_unreference(&stream->buf); |
fb1d9738 JB |
274 | stream->paused = false; |
275 | } else { | |
276 | stream->paused = true; | |
277 | } | |
278 | ||
279 | return 0; | |
280 | } | |
281 | ||
3a839da0 | 282 | /* |
fb1d9738 JB |
283 | * Update a stream and send any put or stop fifo commands needed. |
284 | * | |
285 | * The caller must hold the overlay lock. | |
286 | * | |
287 | * Returns | |
288 | * -ENOMEM if buffer doesn't fit in vram. | |
289 | * -ERESTARTSYS if interrupted. | |
290 | */ | |
291 | static int vmw_overlay_update_stream(struct vmw_private *dev_priv, | |
09881d29 | 292 | struct vmw_bo *buf, |
fb1d9738 JB |
293 | struct drm_vmw_control_stream_arg *arg, |
294 | bool interruptible) | |
295 | { | |
296 | struct vmw_overlay *overlay = dev_priv->overlay_priv; | |
297 | struct vmw_stream *stream = &overlay->stream[arg->stream_id]; | |
298 | int ret = 0; | |
299 | ||
300 | if (!buf) | |
301 | return -EINVAL; | |
302 | ||
303 | DRM_DEBUG(" %s: old %p, new %p, %spaused\n", __func__, | |
304 | stream->buf, buf, stream->paused ? "" : "not "); | |
305 | ||
306 | if (stream->buf != buf) { | |
307 | ret = vmw_overlay_stop(dev_priv, arg->stream_id, | |
308 | false, interruptible); | |
309 | if (ret) | |
310 | return ret; | |
311 | } else if (!stream->paused) { | |
312 | /* If the buffers match and not paused then just send | |
313 | * the put command, no need to do anything else. | |
314 | */ | |
315 | ret = vmw_overlay_send_put(dev_priv, buf, arg, interruptible); | |
316 | if (ret == 0) | |
317 | stream->saved = *arg; | |
318 | else | |
319 | BUG_ON(!interruptible); | |
320 | ||
321 | return ret; | |
322 | } | |
323 | ||
324 | /* We don't start the old stream if we are interrupted. | |
325 | * Might return -ENOMEM if it can't fit the buffer in vram. | |
326 | */ | |
d991ef03 | 327 | ret = vmw_overlay_move_buffer(dev_priv, buf, true, interruptible); |
fb1d9738 JB |
328 | if (ret) |
329 | return ret; | |
330 | ||
331 | ret = vmw_overlay_send_put(dev_priv, buf, arg, interruptible); | |
332 | if (ret) { | |
333 | /* This one needs to happen no matter what. We only remove | |
334 | * the NO_EVICT flag so this is safe from -ENOMEM. | |
335 | */ | |
d991ef03 JB |
336 | BUG_ON(vmw_overlay_move_buffer(dev_priv, buf, false, false) |
337 | != 0); | |
fb1d9738 JB |
338 | return ret; |
339 | } | |
340 | ||
341 | if (stream->buf != buf) | |
f1d34bfd | 342 | stream->buf = vmw_bo_reference(buf); |
fb1d9738 | 343 | stream->saved = *arg; |
792778e8 JB |
344 | /* stream is no longer stopped/paused */ |
345 | stream->paused = false; | |
fb1d9738 JB |
346 | |
347 | return 0; | |
348 | } | |
349 | ||
3a839da0 | 350 | /* |
fb1d9738 JB |
351 | * Try to resume all paused streams. |
352 | * | |
353 | * Used by the kms code after moving a new scanout buffer to vram. | |
354 | * | |
355 | * Takes the overlay lock. | |
356 | */ | |
357 | int vmw_overlay_resume_all(struct vmw_private *dev_priv) | |
358 | { | |
359 | struct vmw_overlay *overlay = dev_priv->overlay_priv; | |
360 | int i, ret; | |
361 | ||
362 | if (!overlay) | |
363 | return 0; | |
364 | ||
365 | mutex_lock(&overlay->mutex); | |
366 | ||
367 | for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) { | |
368 | struct vmw_stream *stream = &overlay->stream[i]; | |
369 | if (!stream->paused) | |
370 | continue; | |
371 | ||
372 | ret = vmw_overlay_update_stream(dev_priv, stream->buf, | |
373 | &stream->saved, false); | |
374 | if (ret != 0) | |
375 | DRM_INFO("%s: *warning* failed to resume stream %i\n", | |
376 | __func__, i); | |
377 | } | |
378 | ||
379 | mutex_unlock(&overlay->mutex); | |
380 | ||
381 | return 0; | |
382 | } | |
383 | ||
3a839da0 | 384 | /* |
fb1d9738 JB |
385 | * Pauses all active streams. |
386 | * | |
387 | * Used by the kms code when moving a new scanout buffer to vram. | |
388 | * | |
389 | * Takes the overlay lock. | |
390 | */ | |
391 | int vmw_overlay_pause_all(struct vmw_private *dev_priv) | |
392 | { | |
393 | struct vmw_overlay *overlay = dev_priv->overlay_priv; | |
394 | int i, ret; | |
395 | ||
396 | if (!overlay) | |
397 | return 0; | |
398 | ||
399 | mutex_lock(&overlay->mutex); | |
400 | ||
401 | for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) { | |
402 | if (overlay->stream[i].paused) | |
403 | DRM_INFO("%s: *warning* stream %i already paused\n", | |
404 | __func__, i); | |
405 | ret = vmw_overlay_stop(dev_priv, i, true, false); | |
406 | WARN_ON(ret != 0); | |
407 | } | |
408 | ||
409 | mutex_unlock(&overlay->mutex); | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
dcb52271 TH |
414 | |
415 | static bool vmw_overlay_available(const struct vmw_private *dev_priv) | |
416 | { | |
c8261a96 | 417 | return (dev_priv->overlay_priv != NULL && |
2cd80dbd | 418 | ((vmw_fifo_caps(dev_priv) & VMW_OVERLAY_CAP_MASK) == |
dcb52271 TH |
419 | VMW_OVERLAY_CAP_MASK)); |
420 | } | |
421 | ||
fb1d9738 JB |
422 | int vmw_overlay_ioctl(struct drm_device *dev, void *data, |
423 | struct drm_file *file_priv) | |
424 | { | |
425 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | |
426 | struct vmw_private *dev_priv = vmw_priv(dev); | |
427 | struct vmw_overlay *overlay = dev_priv->overlay_priv; | |
428 | struct drm_vmw_control_stream_arg *arg = | |
429 | (struct drm_vmw_control_stream_arg *)data; | |
09881d29 | 430 | struct vmw_bo *buf; |
fb1d9738 JB |
431 | struct vmw_resource *res; |
432 | int ret; | |
433 | ||
dcb52271 | 434 | if (!vmw_overlay_available(dev_priv)) |
fb1d9738 JB |
435 | return -ENOSYS; |
436 | ||
437 | ret = vmw_user_stream_lookup(dev_priv, tfile, &arg->stream_id, &res); | |
438 | if (ret) | |
439 | return ret; | |
440 | ||
441 | mutex_lock(&overlay->mutex); | |
442 | ||
443 | if (!arg->enabled) { | |
444 | ret = vmw_overlay_stop(dev_priv, arg->stream_id, false, true); | |
445 | goto out_unlock; | |
446 | } | |
447 | ||
8afa13a0 | 448 | ret = vmw_user_bo_lookup(file_priv, arg->handle, &buf); |
fb1d9738 JB |
449 | if (ret) |
450 | goto out_unlock; | |
451 | ||
452 | ret = vmw_overlay_update_stream(dev_priv, buf, arg, true); | |
453 | ||
91398b41 | 454 | vmw_user_bo_unref(&buf); |
fb1d9738 JB |
455 | |
456 | out_unlock: | |
457 | mutex_unlock(&overlay->mutex); | |
458 | vmw_resource_unreference(&res); | |
459 | ||
460 | return ret; | |
461 | } | |
462 | ||
463 | int vmw_overlay_num_overlays(struct vmw_private *dev_priv) | |
464 | { | |
dcb52271 | 465 | if (!vmw_overlay_available(dev_priv)) |
fb1d9738 JB |
466 | return 0; |
467 | ||
468 | return VMW_MAX_NUM_STREAMS; | |
469 | } | |
470 | ||
471 | int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv) | |
472 | { | |
473 | struct vmw_overlay *overlay = dev_priv->overlay_priv; | |
474 | int i, k; | |
475 | ||
dcb52271 | 476 | if (!vmw_overlay_available(dev_priv)) |
fb1d9738 JB |
477 | return 0; |
478 | ||
479 | mutex_lock(&overlay->mutex); | |
480 | ||
481 | for (i = 0, k = 0; i < VMW_MAX_NUM_STREAMS; i++) | |
482 | if (!overlay->stream[i].claimed) | |
483 | k++; | |
484 | ||
485 | mutex_unlock(&overlay->mutex); | |
486 | ||
487 | return k; | |
488 | } | |
489 | ||
490 | int vmw_overlay_claim(struct vmw_private *dev_priv, uint32_t *out) | |
491 | { | |
492 | struct vmw_overlay *overlay = dev_priv->overlay_priv; | |
493 | int i; | |
494 | ||
495 | if (!overlay) | |
496 | return -ENOSYS; | |
497 | ||
498 | mutex_lock(&overlay->mutex); | |
499 | ||
500 | for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) { | |
501 | ||
502 | if (overlay->stream[i].claimed) | |
503 | continue; | |
504 | ||
505 | overlay->stream[i].claimed = true; | |
506 | *out = i; | |
507 | mutex_unlock(&overlay->mutex); | |
508 | return 0; | |
509 | } | |
510 | ||
511 | mutex_unlock(&overlay->mutex); | |
512 | return -ESRCH; | |
513 | } | |
514 | ||
515 | int vmw_overlay_unref(struct vmw_private *dev_priv, uint32_t stream_id) | |
516 | { | |
517 | struct vmw_overlay *overlay = dev_priv->overlay_priv; | |
518 | ||
519 | BUG_ON(stream_id >= VMW_MAX_NUM_STREAMS); | |
520 | ||
521 | if (!overlay) | |
522 | return -ENOSYS; | |
523 | ||
524 | mutex_lock(&overlay->mutex); | |
525 | ||
526 | WARN_ON(!overlay->stream[stream_id].claimed); | |
527 | vmw_overlay_stop(dev_priv, stream_id, false, false); | |
528 | overlay->stream[stream_id].claimed = false; | |
529 | ||
530 | mutex_unlock(&overlay->mutex); | |
531 | return 0; | |
532 | } | |
533 | ||
534 | int vmw_overlay_init(struct vmw_private *dev_priv) | |
535 | { | |
536 | struct vmw_overlay *overlay; | |
537 | int i; | |
538 | ||
539 | if (dev_priv->overlay_priv) | |
540 | return -EINVAL; | |
541 | ||
f35119d6 | 542 | overlay = kzalloc(sizeof(*overlay), GFP_KERNEL); |
fb1d9738 JB |
543 | if (!overlay) |
544 | return -ENOMEM; | |
545 | ||
fb1d9738 JB |
546 | mutex_init(&overlay->mutex); |
547 | for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) { | |
548 | overlay->stream[i].buf = NULL; | |
549 | overlay->stream[i].paused = false; | |
550 | overlay->stream[i].claimed = false; | |
551 | } | |
552 | ||
553 | dev_priv->overlay_priv = overlay; | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
558 | int vmw_overlay_close(struct vmw_private *dev_priv) | |
559 | { | |
560 | struct vmw_overlay *overlay = dev_priv->overlay_priv; | |
561 | bool forgotten_buffer = false; | |
562 | int i; | |
563 | ||
564 | if (!overlay) | |
565 | return -ENOSYS; | |
566 | ||
567 | for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) { | |
568 | if (overlay->stream[i].buf) { | |
569 | forgotten_buffer = true; | |
570 | vmw_overlay_stop(dev_priv, i, false, false); | |
571 | } | |
572 | } | |
573 | ||
574 | WARN_ON(forgotten_buffer); | |
575 | ||
576 | dev_priv->overlay_priv = NULL; | |
577 | kfree(overlay); | |
578 | ||
579 | return 0; | |
580 | } |