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56d1c78d JB |
1 | /************************************************************************** |
2 | * | |
3 | * Copyright © 2011 VMware, Inc., Palo Alto, CA., USA | |
4 | * All Rights Reserved. | |
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 "vmwgfx_kms.h" | |
29 | ||
30 | ||
31 | #define vmw_crtc_to_sou(x) \ | |
32 | container_of(x, struct vmw_screen_object_unit, base.crtc) | |
33 | #define vmw_encoder_to_sou(x) \ | |
34 | container_of(x, struct vmw_screen_object_unit, base.encoder) | |
35 | #define vmw_connector_to_sou(x) \ | |
36 | container_of(x, struct vmw_screen_object_unit, base.connector) | |
37 | ||
38 | struct vmw_screen_object_display { | |
39 | struct list_head active; | |
40 | ||
41 | unsigned num_active; | |
42 | unsigned last_num_active; | |
43 | ||
44 | struct vmw_framebuffer *fb; | |
45 | }; | |
46 | ||
47 | /** | |
48 | * Display unit using screen objects. | |
49 | */ | |
50 | struct vmw_screen_object_unit { | |
51 | struct vmw_display_unit base; | |
52 | ||
53 | unsigned long buffer_size; /**< Size of allocated buffer */ | |
54 | struct vmw_dma_buffer *buffer; /**< Backing store buffer */ | |
55 | ||
56 | bool defined; | |
57 | ||
58 | struct list_head active; | |
59 | }; | |
60 | ||
61 | static void vmw_sou_destroy(struct vmw_screen_object_unit *sou) | |
62 | { | |
63 | list_del_init(&sou->active); | |
64 | vmw_display_unit_cleanup(&sou->base); | |
65 | kfree(sou); | |
66 | } | |
67 | ||
68 | ||
69 | /* | |
70 | * Screen Object Display Unit CRTC functions | |
71 | */ | |
72 | ||
73 | static void vmw_sou_crtc_destroy(struct drm_crtc *crtc) | |
74 | { | |
75 | vmw_sou_destroy(vmw_crtc_to_sou(crtc)); | |
76 | } | |
77 | ||
78 | static int vmw_sou_del_active(struct vmw_private *vmw_priv, | |
79 | struct vmw_screen_object_unit *sou) | |
80 | { | |
81 | struct vmw_screen_object_display *ld = vmw_priv->sou_priv; | |
82 | if (list_empty(&sou->active)) | |
83 | return 0; | |
84 | ||
85 | /* Must init otherwise list_empty(&sou->active) will not work. */ | |
86 | list_del_init(&sou->active); | |
87 | if (--(ld->num_active) == 0) { | |
88 | BUG_ON(!ld->fb); | |
89 | if (ld->fb->unpin) | |
90 | ld->fb->unpin(ld->fb); | |
91 | ld->fb = NULL; | |
92 | } | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
97 | static int vmw_sou_add_active(struct vmw_private *vmw_priv, | |
98 | struct vmw_screen_object_unit *sou, | |
99 | struct vmw_framebuffer *vfb) | |
100 | { | |
101 | struct vmw_screen_object_display *ld = vmw_priv->sou_priv; | |
102 | struct vmw_screen_object_unit *entry; | |
103 | struct list_head *at; | |
104 | ||
105 | BUG_ON(!ld->num_active && ld->fb); | |
106 | if (vfb != ld->fb) { | |
107 | if (ld->fb && ld->fb->unpin) | |
108 | ld->fb->unpin(ld->fb); | |
109 | if (vfb->pin) | |
110 | vfb->pin(vfb); | |
111 | ld->fb = vfb; | |
112 | } | |
113 | ||
114 | if (!list_empty(&sou->active)) | |
115 | return 0; | |
116 | ||
117 | at = &ld->active; | |
118 | list_for_each_entry(entry, &ld->active, active) { | |
119 | if (entry->base.unit > sou->base.unit) | |
120 | break; | |
121 | ||
122 | at = &entry->active; | |
123 | } | |
124 | ||
125 | list_add(&sou->active, at); | |
126 | ||
127 | ld->num_active++; | |
128 | ||
129 | return 0; | |
130 | } | |
131 | ||
132 | /** | |
133 | * Send the fifo command to create a screen. | |
134 | */ | |
135 | static int vmw_sou_fifo_create(struct vmw_private *dev_priv, | |
136 | struct vmw_screen_object_unit *sou, | |
137 | uint32_t x, uint32_t y, | |
138 | struct drm_display_mode *mode) | |
139 | { | |
140 | size_t fifo_size; | |
141 | ||
142 | struct { | |
143 | struct { | |
144 | uint32_t cmdType; | |
145 | } header; | |
146 | SVGAScreenObject obj; | |
147 | } *cmd; | |
148 | ||
149 | BUG_ON(!sou->buffer); | |
150 | ||
151 | fifo_size = sizeof(*cmd); | |
152 | cmd = vmw_fifo_reserve(dev_priv, fifo_size); | |
153 | /* The hardware has hung, nothing we can do about it here. */ | |
154 | if (unlikely(cmd == NULL)) { | |
155 | DRM_ERROR("Fifo reserve failed.\n"); | |
156 | return -ENOMEM; | |
157 | } | |
158 | ||
159 | memset(cmd, 0, fifo_size); | |
160 | cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN; | |
161 | cmd->obj.structSize = sizeof(SVGAScreenObject); | |
162 | cmd->obj.id = sou->base.unit; | |
163 | cmd->obj.flags = SVGA_SCREEN_HAS_ROOT | | |
164 | (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0); | |
165 | cmd->obj.size.width = mode->hdisplay; | |
166 | cmd->obj.size.height = mode->vdisplay; | |
167 | cmd->obj.root.x = x; | |
168 | cmd->obj.root.y = y; | |
169 | ||
170 | /* Ok to assume that buffer is pinned in vram */ | |
b37a6b9a | 171 | vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr); |
56d1c78d JB |
172 | cmd->obj.backingStore.pitch = mode->hdisplay * 4; |
173 | ||
174 | vmw_fifo_commit(dev_priv, fifo_size); | |
175 | ||
176 | sou->defined = true; | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
181 | /** | |
182 | * Send the fifo command to destroy a screen. | |
183 | */ | |
184 | static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv, | |
185 | struct vmw_screen_object_unit *sou) | |
186 | { | |
187 | size_t fifo_size; | |
188 | int ret; | |
189 | ||
190 | struct { | |
191 | struct { | |
192 | uint32_t cmdType; | |
193 | } header; | |
194 | SVGAFifoCmdDestroyScreen body; | |
195 | } *cmd; | |
196 | ||
197 | /* no need to do anything */ | |
198 | if (unlikely(!sou->defined)) | |
199 | return 0; | |
200 | ||
201 | fifo_size = sizeof(*cmd); | |
202 | cmd = vmw_fifo_reserve(dev_priv, fifo_size); | |
203 | /* the hardware has hung, nothing we can do about it here */ | |
204 | if (unlikely(cmd == NULL)) { | |
205 | DRM_ERROR("Fifo reserve failed.\n"); | |
206 | return -ENOMEM; | |
207 | } | |
208 | ||
209 | memset(cmd, 0, fifo_size); | |
210 | cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN; | |
211 | cmd->body.screenId = sou->base.unit; | |
212 | ||
213 | vmw_fifo_commit(dev_priv, fifo_size); | |
214 | ||
215 | /* Force sync */ | |
216 | ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ); | |
217 | if (unlikely(ret != 0)) | |
218 | DRM_ERROR("Failed to sync with HW"); | |
219 | else | |
220 | sou->defined = false; | |
221 | ||
222 | return ret; | |
223 | } | |
224 | ||
225 | /** | |
226 | * Free the backing store. | |
227 | */ | |
228 | static void vmw_sou_backing_free(struct vmw_private *dev_priv, | |
229 | struct vmw_screen_object_unit *sou) | |
230 | { | |
231 | struct ttm_buffer_object *bo; | |
232 | ||
233 | if (unlikely(sou->buffer == NULL)) | |
234 | return; | |
235 | ||
236 | bo = &sou->buffer->base; | |
237 | ttm_bo_unref(&bo); | |
238 | sou->buffer = NULL; | |
239 | sou->buffer_size = 0; | |
240 | } | |
241 | ||
242 | /** | |
243 | * Allocate the backing store for the buffer. | |
244 | */ | |
245 | static int vmw_sou_backing_alloc(struct vmw_private *dev_priv, | |
246 | struct vmw_screen_object_unit *sou, | |
247 | unsigned long size) | |
248 | { | |
249 | int ret; | |
250 | ||
251 | if (sou->buffer_size == size) | |
252 | return 0; | |
253 | ||
254 | if (sou->buffer) | |
255 | vmw_sou_backing_free(dev_priv, sou); | |
256 | ||
257 | sou->buffer = kzalloc(sizeof(*sou->buffer), GFP_KERNEL); | |
258 | if (unlikely(sou->buffer == NULL)) | |
259 | return -ENOMEM; | |
260 | ||
261 | /* After we have alloced the backing store might not be able to | |
262 | * resume the overlays, this is preferred to failing to alloc. | |
263 | */ | |
264 | vmw_overlay_pause_all(dev_priv); | |
265 | ret = vmw_dmabuf_init(dev_priv, sou->buffer, size, | |
266 | &vmw_vram_ne_placement, | |
267 | false, &vmw_dmabuf_bo_free); | |
268 | vmw_overlay_resume_all(dev_priv); | |
269 | ||
270 | if (unlikely(ret != 0)) | |
271 | sou->buffer = NULL; /* vmw_dmabuf_init frees on error */ | |
272 | else | |
273 | sou->buffer_size = size; | |
274 | ||
275 | return ret; | |
276 | } | |
277 | ||
278 | static int vmw_sou_crtc_set_config(struct drm_mode_set *set) | |
279 | { | |
280 | struct vmw_private *dev_priv; | |
281 | struct vmw_screen_object_unit *sou; | |
282 | struct drm_connector *connector; | |
283 | struct drm_display_mode *mode; | |
284 | struct drm_encoder *encoder; | |
285 | struct vmw_framebuffer *vfb; | |
286 | struct drm_framebuffer *fb; | |
287 | struct drm_crtc *crtc; | |
288 | int ret = 0; | |
289 | ||
290 | if (!set) | |
291 | return -EINVAL; | |
292 | ||
293 | if (!set->crtc) | |
294 | return -EINVAL; | |
295 | ||
296 | /* get the sou */ | |
297 | crtc = set->crtc; | |
298 | sou = vmw_crtc_to_sou(crtc); | |
299 | vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL; | |
300 | dev_priv = vmw_priv(crtc->dev); | |
301 | ||
302 | if (set->num_connectors > 1) { | |
303 | DRM_ERROR("to many connectors\n"); | |
304 | return -EINVAL; | |
305 | } | |
306 | ||
307 | if (set->num_connectors == 1 && | |
308 | set->connectors[0] != &sou->base.connector) { | |
309 | DRM_ERROR("connector doesn't match %p %p\n", | |
310 | set->connectors[0], &sou->base.connector); | |
311 | return -EINVAL; | |
312 | } | |
313 | ||
314 | /* sou only supports one fb active at the time */ | |
315 | if (dev_priv->sou_priv->fb && vfb && | |
316 | !(dev_priv->sou_priv->num_active == 1 && | |
317 | !list_empty(&sou->active)) && | |
318 | dev_priv->sou_priv->fb != vfb) { | |
319 | DRM_ERROR("Multiple framebuffers not supported\n"); | |
320 | return -EINVAL; | |
321 | } | |
322 | ||
323 | /* since they always map one to one these are safe */ | |
324 | connector = &sou->base.connector; | |
325 | encoder = &sou->base.encoder; | |
326 | ||
327 | /* should we turn the crtc off */ | |
328 | if (set->num_connectors == 0 || !set->mode || !set->fb) { | |
329 | ret = vmw_sou_fifo_destroy(dev_priv, sou); | |
330 | /* the hardware has hung don't do anything more */ | |
331 | if (unlikely(ret != 0)) | |
332 | return ret; | |
333 | ||
334 | connector->encoder = NULL; | |
335 | encoder->crtc = NULL; | |
336 | crtc->fb = NULL; | |
337 | crtc->x = 0; | |
338 | crtc->y = 0; | |
339 | ||
340 | vmw_sou_del_active(dev_priv, sou); | |
341 | ||
342 | vmw_sou_backing_free(dev_priv, sou); | |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
347 | ||
348 | /* we now know we want to set a mode */ | |
349 | mode = set->mode; | |
350 | fb = set->fb; | |
351 | ||
352 | if (set->x + mode->hdisplay > fb->width || | |
353 | set->y + mode->vdisplay > fb->height) { | |
354 | DRM_ERROR("set outside of framebuffer\n"); | |
355 | return -EINVAL; | |
356 | } | |
357 | ||
358 | vmw_fb_off(dev_priv); | |
359 | ||
360 | if (mode->hdisplay != crtc->mode.hdisplay || | |
361 | mode->vdisplay != crtc->mode.vdisplay) { | |
362 | /* no need to check if depth is different, because backing | |
363 | * store depth is forced to 4 by the device. | |
364 | */ | |
365 | ||
366 | ret = vmw_sou_fifo_destroy(dev_priv, sou); | |
367 | /* the hardware has hung don't do anything more */ | |
368 | if (unlikely(ret != 0)) | |
369 | return ret; | |
370 | ||
371 | vmw_sou_backing_free(dev_priv, sou); | |
372 | } | |
373 | ||
374 | if (!sou->buffer) { | |
375 | /* forced to depth 4 by the device */ | |
376 | size_t size = mode->hdisplay * mode->vdisplay * 4; | |
377 | ret = vmw_sou_backing_alloc(dev_priv, sou, size); | |
378 | if (unlikely(ret != 0)) | |
379 | return ret; | |
380 | } | |
381 | ||
382 | ret = vmw_sou_fifo_create(dev_priv, sou, set->x, set->y, mode); | |
383 | if (unlikely(ret != 0)) { | |
384 | /* | |
385 | * We are in a bit of a situation here, the hardware has | |
386 | * hung and we may or may not have a buffer hanging of | |
387 | * the screen object, best thing to do is not do anything | |
388 | * if we where defined, if not just turn the crtc of. | |
389 | * Not what userspace wants but it needs to htfu. | |
390 | */ | |
391 | if (sou->defined) | |
392 | return ret; | |
393 | ||
394 | connector->encoder = NULL; | |
395 | encoder->crtc = NULL; | |
396 | crtc->fb = NULL; | |
397 | crtc->x = 0; | |
398 | crtc->y = 0; | |
399 | ||
400 | return ret; | |
401 | } | |
402 | ||
403 | vmw_sou_add_active(dev_priv, sou, vfb); | |
404 | ||
405 | connector->encoder = encoder; | |
406 | encoder->crtc = crtc; | |
407 | crtc->mode = *mode; | |
408 | crtc->fb = fb; | |
409 | crtc->x = set->x; | |
410 | crtc->y = set->y; | |
411 | ||
412 | return 0; | |
413 | } | |
414 | ||
415 | static struct drm_crtc_funcs vmw_screen_object_crtc_funcs = { | |
416 | .save = vmw_du_crtc_save, | |
417 | .restore = vmw_du_crtc_restore, | |
418 | .cursor_set = vmw_du_crtc_cursor_set, | |
419 | .cursor_move = vmw_du_crtc_cursor_move, | |
420 | .gamma_set = vmw_du_crtc_gamma_set, | |
421 | .destroy = vmw_sou_crtc_destroy, | |
422 | .set_config = vmw_sou_crtc_set_config, | |
423 | }; | |
424 | ||
425 | /* | |
426 | * Screen Object Display Unit encoder functions | |
427 | */ | |
428 | ||
429 | static void vmw_sou_encoder_destroy(struct drm_encoder *encoder) | |
430 | { | |
431 | vmw_sou_destroy(vmw_encoder_to_sou(encoder)); | |
432 | } | |
433 | ||
434 | static struct drm_encoder_funcs vmw_screen_object_encoder_funcs = { | |
435 | .destroy = vmw_sou_encoder_destroy, | |
436 | }; | |
437 | ||
438 | /* | |
439 | * Screen Object Display Unit connector functions | |
440 | */ | |
441 | ||
442 | static void vmw_sou_connector_destroy(struct drm_connector *connector) | |
443 | { | |
444 | vmw_sou_destroy(vmw_connector_to_sou(connector)); | |
445 | } | |
446 | ||
447 | static struct drm_connector_funcs vmw_legacy_connector_funcs = { | |
448 | .dpms = vmw_du_connector_dpms, | |
449 | .save = vmw_du_connector_save, | |
450 | .restore = vmw_du_connector_restore, | |
451 | .detect = vmw_du_connector_detect, | |
452 | .fill_modes = vmw_du_connector_fill_modes, | |
453 | .set_property = vmw_du_connector_set_property, | |
454 | .destroy = vmw_sou_connector_destroy, | |
455 | }; | |
456 | ||
457 | static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit) | |
458 | { | |
459 | struct vmw_screen_object_unit *sou; | |
460 | struct drm_device *dev = dev_priv->dev; | |
461 | struct drm_connector *connector; | |
462 | struct drm_encoder *encoder; | |
463 | struct drm_crtc *crtc; | |
464 | ||
465 | sou = kzalloc(sizeof(*sou), GFP_KERNEL); | |
466 | if (!sou) | |
467 | return -ENOMEM; | |
468 | ||
469 | sou->base.unit = unit; | |
470 | crtc = &sou->base.crtc; | |
471 | encoder = &sou->base.encoder; | |
472 | connector = &sou->base.connector; | |
473 | ||
474 | INIT_LIST_HEAD(&sou->active); | |
475 | ||
476 | sou->base.pref_active = (unit == 0); | |
477 | sou->base.pref_width = 800; | |
478 | sou->base.pref_height = 600; | |
479 | sou->base.pref_mode = NULL; | |
480 | ||
481 | drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, | |
482 | DRM_MODE_CONNECTOR_LVDS); | |
483 | connector->status = vmw_du_connector_detect(connector, true); | |
484 | ||
485 | drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs, | |
486 | DRM_MODE_ENCODER_LVDS); | |
487 | drm_mode_connector_attach_encoder(connector, encoder); | |
488 | encoder->possible_crtcs = (1 << unit); | |
489 | encoder->possible_clones = 0; | |
490 | ||
491 | drm_crtc_init(dev, crtc, &vmw_screen_object_crtc_funcs); | |
492 | ||
493 | drm_mode_crtc_set_gamma_size(crtc, 256); | |
494 | ||
495 | drm_connector_attach_property(connector, | |
496 | dev->mode_config.dirty_info_property, | |
497 | 1); | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
502 | int vmw_kms_init_screen_object_display(struct vmw_private *dev_priv) | |
503 | { | |
504 | struct drm_device *dev = dev_priv->dev; | |
505 | int i; | |
506 | int ret; | |
507 | ||
508 | if (dev_priv->sou_priv) { | |
509 | DRM_INFO("sou system already on\n"); | |
510 | return -EINVAL; | |
511 | } | |
512 | ||
513 | if (!(dev_priv->fifo.capabilities & SVGA_FIFO_CAP_SCREEN_OBJECT_2)) { | |
514 | DRM_INFO("Not using screen objects," | |
515 | " missing cap SCREEN_OBJECT_2\n"); | |
516 | return -ENOSYS; | |
517 | } | |
518 | ||
519 | ret = -ENOMEM; | |
520 | dev_priv->sou_priv = kmalloc(sizeof(*dev_priv->sou_priv), GFP_KERNEL); | |
521 | if (unlikely(!dev_priv->sou_priv)) | |
522 | goto err_no_mem; | |
523 | ||
524 | INIT_LIST_HEAD(&dev_priv->sou_priv->active); | |
525 | dev_priv->sou_priv->num_active = 0; | |
526 | dev_priv->sou_priv->last_num_active = 0; | |
527 | dev_priv->sou_priv->fb = NULL; | |
528 | ||
529 | ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); | |
530 | if (unlikely(ret != 0)) | |
531 | goto err_free; | |
532 | ||
533 | ret = drm_mode_create_dirty_info_property(dev_priv->dev); | |
534 | if (unlikely(ret != 0)) | |
535 | goto err_vblank_cleanup; | |
536 | ||
537 | for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) | |
538 | vmw_sou_init(dev_priv, i); | |
539 | ||
540 | DRM_INFO("Screen objects system initialized\n"); | |
541 | ||
542 | return 0; | |
543 | ||
544 | err_vblank_cleanup: | |
545 | drm_vblank_cleanup(dev); | |
546 | err_free: | |
547 | kfree(dev_priv->sou_priv); | |
60a16a30 | 548 | dev_priv->sou_priv = NULL; |
56d1c78d JB |
549 | err_no_mem: |
550 | return ret; | |
551 | } | |
552 | ||
553 | int vmw_kms_close_screen_object_display(struct vmw_private *dev_priv) | |
554 | { | |
555 | struct drm_device *dev = dev_priv->dev; | |
556 | ||
56d1c78d JB |
557 | if (!dev_priv->sou_priv) |
558 | return -ENOSYS; | |
559 | ||
60a16a30 JB |
560 | drm_vblank_cleanup(dev); |
561 | ||
56d1c78d JB |
562 | if (!list_empty(&dev_priv->sou_priv->active)) |
563 | DRM_ERROR("Still have active outputs when unloading driver"); | |
564 | ||
565 | kfree(dev_priv->sou_priv); | |
566 | ||
567 | return 0; | |
568 | } |