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1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/**************************************************************************
3 *
4 * Copyright 2009-2023 VMware, Inc., Palo Alto, CA., USA
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 **************************************************************************/
27#include "vmwgfx_bo.h"
28#include "vmwgfx_drv.h"
29
30#include "device_include/svga_overlay.h"
31#include "device_include/svga_escape.h"
32
33#include <drm/ttm/ttm_placement.h>
34
35#define VMW_MAX_NUM_STREAMS 1
36#define VMW_OVERLAY_CAP_MASK (SVGA_FIFO_CAP_VIDEO | SVGA_FIFO_CAP_ESCAPE)
37
38struct vmw_stream {
39 struct vmw_bo *buf;
40 bool claimed;
41 bool paused;
42 struct drm_vmw_control_stream_arg saved;
43};
44
45/*
46 * Overlay control
47 */
48struct 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
56struct vmw_escape_header {
57 uint32_t cmd;
58 SVGAFifoCmdEscape body;
59};
60
61struct vmw_escape_video_flush {
62 struct vmw_escape_header escape;
63 SVGAEscapeVideoFlush flush;
64};
65
66static 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
74static 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
82/*
83 * Send put command to hw.
84 *
85 * Returns
86 * -ERESTARTSYS if interrupted by a signal.
87 */
88static int vmw_overlay_send_put(struct vmw_private *dev_priv,
89 struct vmw_bo *buf,
90 struct drm_vmw_control_stream_arg *arg,
91 bool interruptible)
92{
93 struct vmw_escape_video_flush *flush;
94 size_t fifo_size;
95 bool have_so = (dev_priv->active_display_unit != vmw_du_legacy);
96 int i, num_items;
97 SVGAGuestPtr ptr;
98
99 struct {
100 struct vmw_escape_header escape;
101 struct {
102 uint32_t cmdType;
103 uint32_t streamId;
104 } header;
105 } *cmds;
106 struct {
107 uint32_t registerId;
108 uint32_t value;
109 } *items;
110
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
119 cmds = VMW_CMD_RESERVE(dev_priv, fifo_size);
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
137 vmw_bo_get_guest_ptr(&buf->tbo, &ptr);
138 ptr.offset += arg->offset;
139
140 items[SVGA_VIDEO_ENABLED].value = true;
141 items[SVGA_VIDEO_FLAGS].value = arg->flags;
142 items[SVGA_VIDEO_DATA_OFFSET].value = ptr.offset;
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) {
160 items[SVGA_VIDEO_DATA_GMRID].value = ptr.gmrId;
161 items[SVGA_VIDEO_DST_SCREEN_ID].value = SVGA_ID_INVALID;
162 }
163
164 fill_flush(flush, arg->stream_id);
165
166 vmw_cmd_commit(dev_priv, fifo_size);
167
168 return 0;
169}
170
171/*
172 * Send stop command to hw.
173 *
174 * Returns
175 * -ERESTARTSYS if interrupted by a signal.
176 */
177static 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 (;;) {
189 cmds = VMW_CMD_RESERVE(dev_priv, sizeof(*cmds));
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
208 vmw_cmd_commit(dev_priv, sizeof(*cmds));
209
210 return 0;
211}
212
213/*
214 * Move a buffer to vram or gmr if @pin is set, else unpin the buffer.
215 *
216 * With the introduction of screen objects buffers could now be
217 * used with GMRs instead of being locked to vram.
218 */
219static int vmw_overlay_move_buffer(struct vmw_private *dev_priv,
220 struct vmw_bo *buf,
221 bool pin, bool inter)
222{
223 if (!pin)
224 return vmw_bo_unpin(dev_priv, buf, inter);
225
226 if (dev_priv->active_display_unit == vmw_du_legacy)
227 return vmw_bo_pin_in_vram(dev_priv, buf, inter);
228
229 return vmw_bo_pin_in_vram_or_gmr(dev_priv, buf, inter);
230}
231
232/*
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 */
244static 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 */
264 ret = vmw_overlay_move_buffer(dev_priv, stream->buf, false,
265 interruptible);
266 if (interruptible && ret == -ERESTARTSYS)
267 return ret;
268 else
269 BUG_ON(ret != 0);
270 }
271
272 if (!pause) {
273 vmw_bo_unreference(&stream->buf);
274 stream->paused = false;
275 } else {
276 stream->paused = true;
277 }
278
279 return 0;
280}
281
282/*
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 */
291static int vmw_overlay_update_stream(struct vmw_private *dev_priv,
292 struct vmw_bo *buf,
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 */
327 ret = vmw_overlay_move_buffer(dev_priv, buf, true, interruptible);
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 */
336 BUG_ON(vmw_overlay_move_buffer(dev_priv, buf, false, false)
337 != 0);
338 return ret;
339 }
340
341 if (stream->buf != buf)
342 stream->buf = vmw_bo_reference(buf);
343 stream->saved = *arg;
344 /* stream is no longer stopped/paused */
345 stream->paused = false;
346
347 return 0;
348}
349
350/*
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 */
357int 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
384/*
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 */
391int 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
414
415static bool vmw_overlay_available(const struct vmw_private *dev_priv)
416{
417 return (dev_priv->overlay_priv != NULL &&
418 ((vmw_fifo_caps(dev_priv) & VMW_OVERLAY_CAP_MASK) ==
419 VMW_OVERLAY_CAP_MASK));
420}
421
422int 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;
430 struct vmw_bo *buf;
431 struct vmw_resource *res;
432 int ret;
433
434 if (!vmw_overlay_available(dev_priv))
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
448 ret = vmw_user_bo_lookup(file_priv, arg->handle, &buf);
449 if (ret)
450 goto out_unlock;
451
452 ret = vmw_overlay_update_stream(dev_priv, buf, arg, true);
453
454 vmw_user_bo_unref(&buf);
455
456out_unlock:
457 mutex_unlock(&overlay->mutex);
458 vmw_resource_unreference(&res);
459
460 return ret;
461}
462
463int vmw_overlay_num_overlays(struct vmw_private *dev_priv)
464{
465 if (!vmw_overlay_available(dev_priv))
466 return 0;
467
468 return VMW_MAX_NUM_STREAMS;
469}
470
471int 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
476 if (!vmw_overlay_available(dev_priv))
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
490int 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
515int 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
534int 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
542 overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
543 if (!overlay)
544 return -ENOMEM;
545
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
558int 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}
1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/**************************************************************************
3 *
4 * Copyright 2009-2014 VMware, Inc., Palo Alto, CA., USA
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 **************************************************************************/
27
28#include <drm/ttm/ttm_placement.h>
29
30#include "device_include/svga_overlay.h"
31#include "device_include/svga_escape.h"
32
33#include "vmwgfx_drv.h"
34
35#define VMW_MAX_NUM_STREAMS 1
36#define VMW_OVERLAY_CAP_MASK (SVGA_FIFO_CAP_VIDEO | SVGA_FIFO_CAP_ESCAPE)
37
38struct vmw_stream {
39 struct vmw_buffer_object *buf;
40 bool claimed;
41 bool paused;
42 struct drm_vmw_control_stream_arg saved;
43};
44
45/*
46 * Overlay control
47 */
48struct 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
56static inline struct vmw_overlay *vmw_overlay(struct drm_device *dev)
57{
58 struct vmw_private *dev_priv = vmw_priv(dev);
59 return dev_priv ? dev_priv->overlay_priv : NULL;
60}
61
62struct vmw_escape_header {
63 uint32_t cmd;
64 SVGAFifoCmdEscape body;
65};
66
67struct vmw_escape_video_flush {
68 struct vmw_escape_header escape;
69 SVGAEscapeVideoFlush flush;
70};
71
72static inline void fill_escape(struct vmw_escape_header *header,
73 uint32_t size)
74{
75 header->cmd = SVGA_CMD_ESCAPE;
76 header->body.nsid = SVGA_ESCAPE_NSID_VMWARE;
77 header->body.size = size;
78}
79
80static inline void fill_flush(struct vmw_escape_video_flush *cmd,
81 uint32_t stream_id)
82{
83 fill_escape(&cmd->escape, sizeof(cmd->flush));
84 cmd->flush.cmdType = SVGA_ESCAPE_VMWARE_VIDEO_FLUSH;
85 cmd->flush.streamId = stream_id;
86}
87
88/*
89 * Send put command to hw.
90 *
91 * Returns
92 * -ERESTARTSYS if interrupted by a signal.
93 */
94static int vmw_overlay_send_put(struct vmw_private *dev_priv,
95 struct vmw_buffer_object *buf,
96 struct drm_vmw_control_stream_arg *arg,
97 bool interruptible)
98{
99 struct vmw_escape_video_flush *flush;
100 size_t fifo_size;
101 bool have_so = (dev_priv->active_display_unit == vmw_du_screen_object);
102 int i, num_items;
103 SVGAGuestPtr ptr;
104
105 struct {
106 struct vmw_escape_header escape;
107 struct {
108 uint32_t cmdType;
109 uint32_t streamId;
110 } header;
111 } *cmds;
112 struct {
113 uint32_t registerId;
114 uint32_t value;
115 } *items;
116
117 /* defines are a index needs + 1 */
118 if (have_so)
119 num_items = SVGA_VIDEO_DST_SCREEN_ID + 1;
120 else
121 num_items = SVGA_VIDEO_PITCH_3 + 1;
122
123 fifo_size = sizeof(*cmds) + sizeof(*flush) + sizeof(*items) * num_items;
124
125 cmds = VMW_CMD_RESERVE(dev_priv, fifo_size);
126 /* hardware has hung, can't do anything here */
127 if (!cmds)
128 return -ENOMEM;
129
130 items = (typeof(items))&cmds[1];
131 flush = (struct vmw_escape_video_flush *)&items[num_items];
132
133 /* the size is header + number of items */
134 fill_escape(&cmds->escape, sizeof(*items) * (num_items + 1));
135
136 cmds->header.cmdType = SVGA_ESCAPE_VMWARE_VIDEO_SET_REGS;
137 cmds->header.streamId = arg->stream_id;
138
139 /* the IDs are neatly numbered */
140 for (i = 0; i < num_items; i++)
141 items[i].registerId = i;
142
143 vmw_bo_get_guest_ptr(&buf->base, &ptr);
144 ptr.offset += arg->offset;
145
146 items[SVGA_VIDEO_ENABLED].value = true;
147 items[SVGA_VIDEO_FLAGS].value = arg->flags;
148 items[SVGA_VIDEO_DATA_OFFSET].value = ptr.offset;
149 items[SVGA_VIDEO_FORMAT].value = arg->format;
150 items[SVGA_VIDEO_COLORKEY].value = arg->color_key;
151 items[SVGA_VIDEO_SIZE].value = arg->size;
152 items[SVGA_VIDEO_WIDTH].value = arg->width;
153 items[SVGA_VIDEO_HEIGHT].value = arg->height;
154 items[SVGA_VIDEO_SRC_X].value = arg->src.x;
155 items[SVGA_VIDEO_SRC_Y].value = arg->src.y;
156 items[SVGA_VIDEO_SRC_WIDTH].value = arg->src.w;
157 items[SVGA_VIDEO_SRC_HEIGHT].value = arg->src.h;
158 items[SVGA_VIDEO_DST_X].value = arg->dst.x;
159 items[SVGA_VIDEO_DST_Y].value = arg->dst.y;
160 items[SVGA_VIDEO_DST_WIDTH].value = arg->dst.w;
161 items[SVGA_VIDEO_DST_HEIGHT].value = arg->dst.h;
162 items[SVGA_VIDEO_PITCH_1].value = arg->pitch[0];
163 items[SVGA_VIDEO_PITCH_2].value = arg->pitch[1];
164 items[SVGA_VIDEO_PITCH_3].value = arg->pitch[2];
165 if (have_so) {
166 items[SVGA_VIDEO_DATA_GMRID].value = ptr.gmrId;
167 items[SVGA_VIDEO_DST_SCREEN_ID].value = SVGA_ID_INVALID;
168 }
169
170 fill_flush(flush, arg->stream_id);
171
172 vmw_cmd_commit(dev_priv, fifo_size);
173
174 return 0;
175}
176
177/*
178 * Send stop command to hw.
179 *
180 * Returns
181 * -ERESTARTSYS if interrupted by a signal.
182 */
183static int vmw_overlay_send_stop(struct vmw_private *dev_priv,
184 uint32_t stream_id,
185 bool interruptible)
186{
187 struct {
188 struct vmw_escape_header escape;
189 SVGAEscapeVideoSetRegs body;
190 struct vmw_escape_video_flush flush;
191 } *cmds;
192 int ret;
193
194 for (;;) {
195 cmds = VMW_CMD_RESERVE(dev_priv, sizeof(*cmds));
196 if (cmds)
197 break;
198
199 ret = vmw_fallback_wait(dev_priv, false, true, 0,
200 interruptible, 3*HZ);
201 if (interruptible && ret == -ERESTARTSYS)
202 return ret;
203 else
204 BUG_ON(ret != 0);
205 }
206
207 fill_escape(&cmds->escape, sizeof(cmds->body));
208 cmds->body.header.cmdType = SVGA_ESCAPE_VMWARE_VIDEO_SET_REGS;
209 cmds->body.header.streamId = stream_id;
210 cmds->body.items[0].registerId = SVGA_VIDEO_ENABLED;
211 cmds->body.items[0].value = false;
212 fill_flush(&cmds->flush, stream_id);
213
214 vmw_cmd_commit(dev_priv, sizeof(*cmds));
215
216 return 0;
217}
218
219/*
220 * Move a buffer to vram or gmr if @pin is set, else unpin the buffer.
221 *
222 * With the introduction of screen objects buffers could now be
223 * used with GMRs instead of being locked to vram.
224 */
225static int vmw_overlay_move_buffer(struct vmw_private *dev_priv,
226 struct vmw_buffer_object *buf,
227 bool pin, bool inter)
228{
229 if (!pin)
230 return vmw_bo_unpin(dev_priv, buf, inter);
231
232 if (dev_priv->active_display_unit == vmw_du_legacy)
233 return vmw_bo_pin_in_vram(dev_priv, buf, inter);
234
235 return vmw_bo_pin_in_vram_or_gmr(dev_priv, buf, inter);
236}
237
238/*
239 * Stop or pause a stream.
240 *
241 * If the stream is paused the no evict flag is removed from the buffer
242 * but left in vram. This allows for instance mode_set to evict it
243 * should it need to.
244 *
245 * The caller must hold the overlay lock.
246 *
247 * @stream_id which stream to stop/pause.
248 * @pause true to pause, false to stop completely.
249 */
250static int vmw_overlay_stop(struct vmw_private *dev_priv,
251 uint32_t stream_id, bool pause,
252 bool interruptible)
253{
254 struct vmw_overlay *overlay = dev_priv->overlay_priv;
255 struct vmw_stream *stream = &overlay->stream[stream_id];
256 int ret;
257
258 /* no buffer attached the stream is completely stopped */
259 if (!stream->buf)
260 return 0;
261
262 /* If the stream is paused this is already done */
263 if (!stream->paused) {
264 ret = vmw_overlay_send_stop(dev_priv, stream_id,
265 interruptible);
266 if (ret)
267 return ret;
268
269 /* We just remove the NO_EVICT flag so no -ENOMEM */
270 ret = vmw_overlay_move_buffer(dev_priv, stream->buf, false,
271 interruptible);
272 if (interruptible && ret == -ERESTARTSYS)
273 return ret;
274 else
275 BUG_ON(ret != 0);
276 }
277
278 if (!pause) {
279 vmw_bo_unreference(&stream->buf);
280 stream->paused = false;
281 } else {
282 stream->paused = true;
283 }
284
285 return 0;
286}
287
288/*
289 * Update a stream and send any put or stop fifo commands needed.
290 *
291 * The caller must hold the overlay lock.
292 *
293 * Returns
294 * -ENOMEM if buffer doesn't fit in vram.
295 * -ERESTARTSYS if interrupted.
296 */
297static int vmw_overlay_update_stream(struct vmw_private *dev_priv,
298 struct vmw_buffer_object *buf,
299 struct drm_vmw_control_stream_arg *arg,
300 bool interruptible)
301{
302 struct vmw_overlay *overlay = dev_priv->overlay_priv;
303 struct vmw_stream *stream = &overlay->stream[arg->stream_id];
304 int ret = 0;
305
306 if (!buf)
307 return -EINVAL;
308
309 DRM_DEBUG(" %s: old %p, new %p, %spaused\n", __func__,
310 stream->buf, buf, stream->paused ? "" : "not ");
311
312 if (stream->buf != buf) {
313 ret = vmw_overlay_stop(dev_priv, arg->stream_id,
314 false, interruptible);
315 if (ret)
316 return ret;
317 } else if (!stream->paused) {
318 /* If the buffers match and not paused then just send
319 * the put command, no need to do anything else.
320 */
321 ret = vmw_overlay_send_put(dev_priv, buf, arg, interruptible);
322 if (ret == 0)
323 stream->saved = *arg;
324 else
325 BUG_ON(!interruptible);
326
327 return ret;
328 }
329
330 /* We don't start the old stream if we are interrupted.
331 * Might return -ENOMEM if it can't fit the buffer in vram.
332 */
333 ret = vmw_overlay_move_buffer(dev_priv, buf, true, interruptible);
334 if (ret)
335 return ret;
336
337 ret = vmw_overlay_send_put(dev_priv, buf, arg, interruptible);
338 if (ret) {
339 /* This one needs to happen no matter what. We only remove
340 * the NO_EVICT flag so this is safe from -ENOMEM.
341 */
342 BUG_ON(vmw_overlay_move_buffer(dev_priv, buf, false, false)
343 != 0);
344 return ret;
345 }
346
347 if (stream->buf != buf)
348 stream->buf = vmw_bo_reference(buf);
349 stream->saved = *arg;
350 /* stream is no longer stopped/paused */
351 stream->paused = false;
352
353 return 0;
354}
355
356/*
357 * Try to resume all paused streams.
358 *
359 * Used by the kms code after moving a new scanout buffer to vram.
360 *
361 * Takes the overlay lock.
362 */
363int vmw_overlay_resume_all(struct vmw_private *dev_priv)
364{
365 struct vmw_overlay *overlay = dev_priv->overlay_priv;
366 int i, ret;
367
368 if (!overlay)
369 return 0;
370
371 mutex_lock(&overlay->mutex);
372
373 for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) {
374 struct vmw_stream *stream = &overlay->stream[i];
375 if (!stream->paused)
376 continue;
377
378 ret = vmw_overlay_update_stream(dev_priv, stream->buf,
379 &stream->saved, false);
380 if (ret != 0)
381 DRM_INFO("%s: *warning* failed to resume stream %i\n",
382 __func__, i);
383 }
384
385 mutex_unlock(&overlay->mutex);
386
387 return 0;
388}
389
390/*
391 * Pauses all active streams.
392 *
393 * Used by the kms code when moving a new scanout buffer to vram.
394 *
395 * Takes the overlay lock.
396 */
397int vmw_overlay_pause_all(struct vmw_private *dev_priv)
398{
399 struct vmw_overlay *overlay = dev_priv->overlay_priv;
400 int i, ret;
401
402 if (!overlay)
403 return 0;
404
405 mutex_lock(&overlay->mutex);
406
407 for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) {
408 if (overlay->stream[i].paused)
409 DRM_INFO("%s: *warning* stream %i already paused\n",
410 __func__, i);
411 ret = vmw_overlay_stop(dev_priv, i, true, false);
412 WARN_ON(ret != 0);
413 }
414
415 mutex_unlock(&overlay->mutex);
416
417 return 0;
418}
419
420
421static bool vmw_overlay_available(const struct vmw_private *dev_priv)
422{
423 return (dev_priv->overlay_priv != NULL &&
424 ((vmw_fifo_caps(dev_priv) & VMW_OVERLAY_CAP_MASK) ==
425 VMW_OVERLAY_CAP_MASK));
426}
427
428int vmw_overlay_ioctl(struct drm_device *dev, void *data,
429 struct drm_file *file_priv)
430{
431 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
432 struct vmw_private *dev_priv = vmw_priv(dev);
433 struct vmw_overlay *overlay = dev_priv->overlay_priv;
434 struct drm_vmw_control_stream_arg *arg =
435 (struct drm_vmw_control_stream_arg *)data;
436 struct vmw_buffer_object *buf;
437 struct vmw_resource *res;
438 int ret;
439
440 if (!vmw_overlay_available(dev_priv))
441 return -ENOSYS;
442
443 ret = vmw_user_stream_lookup(dev_priv, tfile, &arg->stream_id, &res);
444 if (ret)
445 return ret;
446
447 mutex_lock(&overlay->mutex);
448
449 if (!arg->enabled) {
450 ret = vmw_overlay_stop(dev_priv, arg->stream_id, false, true);
451 goto out_unlock;
452 }
453
454 ret = vmw_user_bo_lookup(tfile, arg->handle, &buf, NULL);
455 if (ret)
456 goto out_unlock;
457
458 ret = vmw_overlay_update_stream(dev_priv, buf, arg, true);
459
460 vmw_bo_unreference(&buf);
461
462out_unlock:
463 mutex_unlock(&overlay->mutex);
464 vmw_resource_unreference(&res);
465
466 return ret;
467}
468
469int vmw_overlay_num_overlays(struct vmw_private *dev_priv)
470{
471 if (!vmw_overlay_available(dev_priv))
472 return 0;
473
474 return VMW_MAX_NUM_STREAMS;
475}
476
477int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv)
478{
479 struct vmw_overlay *overlay = dev_priv->overlay_priv;
480 int i, k;
481
482 if (!vmw_overlay_available(dev_priv))
483 return 0;
484
485 mutex_lock(&overlay->mutex);
486
487 for (i = 0, k = 0; i < VMW_MAX_NUM_STREAMS; i++)
488 if (!overlay->stream[i].claimed)
489 k++;
490
491 mutex_unlock(&overlay->mutex);
492
493 return k;
494}
495
496int vmw_overlay_claim(struct vmw_private *dev_priv, uint32_t *out)
497{
498 struct vmw_overlay *overlay = dev_priv->overlay_priv;
499 int i;
500
501 if (!overlay)
502 return -ENOSYS;
503
504 mutex_lock(&overlay->mutex);
505
506 for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) {
507
508 if (overlay->stream[i].claimed)
509 continue;
510
511 overlay->stream[i].claimed = true;
512 *out = i;
513 mutex_unlock(&overlay->mutex);
514 return 0;
515 }
516
517 mutex_unlock(&overlay->mutex);
518 return -ESRCH;
519}
520
521int vmw_overlay_unref(struct vmw_private *dev_priv, uint32_t stream_id)
522{
523 struct vmw_overlay *overlay = dev_priv->overlay_priv;
524
525 BUG_ON(stream_id >= VMW_MAX_NUM_STREAMS);
526
527 if (!overlay)
528 return -ENOSYS;
529
530 mutex_lock(&overlay->mutex);
531
532 WARN_ON(!overlay->stream[stream_id].claimed);
533 vmw_overlay_stop(dev_priv, stream_id, false, false);
534 overlay->stream[stream_id].claimed = false;
535
536 mutex_unlock(&overlay->mutex);
537 return 0;
538}
539
540int vmw_overlay_init(struct vmw_private *dev_priv)
541{
542 struct vmw_overlay *overlay;
543 int i;
544
545 if (dev_priv->overlay_priv)
546 return -EINVAL;
547
548 overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
549 if (!overlay)
550 return -ENOMEM;
551
552 mutex_init(&overlay->mutex);
553 for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) {
554 overlay->stream[i].buf = NULL;
555 overlay->stream[i].paused = false;
556 overlay->stream[i].claimed = false;
557 }
558
559 dev_priv->overlay_priv = overlay;
560
561 return 0;
562}
563
564int vmw_overlay_close(struct vmw_private *dev_priv)
565{
566 struct vmw_overlay *overlay = dev_priv->overlay_priv;
567 bool forgotten_buffer = false;
568 int i;
569
570 if (!overlay)
571 return -ENOSYS;
572
573 for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) {
574 if (overlay->stream[i].buf) {
575 forgotten_buffer = true;
576 vmw_overlay_stop(dev_priv, i, false, false);
577 }
578 }
579
580 WARN_ON(forgotten_buffer);
581
582 dev_priv->overlay_priv = NULL;
583 kfree(overlay);
584
585 return 0;
586}