1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /**************************************************************************
3 *
4 * Copyright 2009-2015 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/drm_atomic.h>
29 #include <drm/drm_atomic_helper.h>
30 #include <drm/drm_fourcc.h>
31 #include <drm/drm_plane_helper.h>
32 #include <drm/drm_vblank.h>
33
34 #include "vmwgfx_kms.h"
35
36 #define vmw_crtc_to_ldu(x) \
37 container_of(x, struct vmw_legacy_display_unit, base.crtc)
38 #define vmw_encoder_to_ldu(x) \
39 container_of(x, struct vmw_legacy_display_unit, base.encoder)
40 #define vmw_connector_to_ldu(x) \
41 container_of(x, struct vmw_legacy_display_unit, base.connector)
42
43 struct vmw_legacy_display {
44 struct list_head active;
45
46 unsigned num_active;
47 unsigned last_num_active;
48
49 struct vmw_framebuffer *fb;
50 };
51
52 /**
53 * Display unit using the legacy register interface.
54 */
55 struct vmw_legacy_display_unit {
56 struct vmw_display_unit base;
57
58 struct list_head active;
59 };
60
vmw_ldu_destroy(struct vmw_legacy_display_unit * ldu)61 static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
62 {
63 list_del_init(&ldu->active);
64 vmw_du_cleanup(&ldu->base);
65 kfree(ldu);
66 }
67
68
69 /*
70 * Legacy Display Unit CRTC functions
71 */
72
vmw_ldu_crtc_destroy(struct drm_crtc * crtc)73 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
74 {
75 vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
76 }
77
vmw_ldu_commit_list(struct vmw_private * dev_priv)78 static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
79 {
80 struct vmw_legacy_display *lds = dev_priv->ldu_priv;
81 struct vmw_legacy_display_unit *entry;
82 struct drm_framebuffer *fb = NULL;
83 struct drm_crtc *crtc = NULL;
84 int i = 0;
85
86 /* If there is no display topology the host just assumes
87 * that the guest will set the same layout as the host.
88 */
89 if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
90 int w = 0, h = 0;
91 list_for_each_entry(entry, &lds->active, active) {
92 crtc = &entry->base.crtc;
93 w = max(w, crtc->x + crtc->mode.hdisplay);
94 h = max(h, crtc->y + crtc->mode.vdisplay);
95 i++;
96 }
97
98 if (crtc == NULL)
99 return 0;
100 fb = entry->base.crtc.primary->state->fb;
101
102 return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
103 fb->format->cpp[0] * 8,
104 fb->format->depth);
105 }
106
107 if (!list_empty(&lds->active)) {
108 entry = list_entry(lds->active.next, typeof(*entry), active);
109 fb = entry->base.crtc.primary->state->fb;
110
111 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
112 fb->format->cpp[0] * 8, fb->format->depth);
113 }
114
115 /* Make sure we always show something. */
116 vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
117 lds->num_active ? lds->num_active : 1);
118
119 i = 0;
120 list_for_each_entry(entry, &lds->active, active) {
121 crtc = &entry->base.crtc;
122
123 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
124 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
125 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
126 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
127 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
128 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
129 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
130
131 i++;
132 }
133
134 BUG_ON(i != lds->num_active);
135
136 lds->last_num_active = lds->num_active;
137
138 return 0;
139 }
140
vmw_ldu_del_active(struct vmw_private * vmw_priv,struct vmw_legacy_display_unit * ldu)141 static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
142 struct vmw_legacy_display_unit *ldu)
143 {
144 struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
145 if (list_empty(&ldu->active))
146 return 0;
147
148 /* Must init otherwise list_empty(&ldu->active) will not work. */
149 list_del_init(&ldu->active);
150 if (--(ld->num_active) == 0) {
151 BUG_ON(!ld->fb);
152 if (ld->fb->unpin)
153 ld->fb->unpin(ld->fb);
154 ld->fb = NULL;
155 }
156
157 return 0;
158 }
159
vmw_ldu_add_active(struct vmw_private * vmw_priv,struct vmw_legacy_display_unit * ldu,struct vmw_framebuffer * vfb)160 static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
161 struct vmw_legacy_display_unit *ldu,
162 struct vmw_framebuffer *vfb)
163 {
164 struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
165 struct vmw_legacy_display_unit *entry;
166 struct list_head *at;
167
168 BUG_ON(!ld->num_active && ld->fb);
169 if (vfb != ld->fb) {
170 if (ld->fb && ld->fb->unpin)
171 ld->fb->unpin(ld->fb);
172 vmw_svga_enable(vmw_priv);
173 if (vfb->pin)
174 vfb->pin(vfb);
175 ld->fb = vfb;
176 }
177
178 if (!list_empty(&ldu->active))
179 return 0;
180
181 at = &ld->active;
182 list_for_each_entry(entry, &ld->active, active) {
183 if (entry->base.unit > ldu->base.unit)
184 break;
185
186 at = &entry->active;
187 }
188
189 list_add(&ldu->active, at);
190
191 ld->num_active++;
192
193 return 0;
194 }
195
196 /**
197 * vmw_ldu_crtc_mode_set_nofb - Enable svga
198 *
199 * @crtc: CRTC associated with the new screen
200 *
201 * For LDU, just enable the svga
202 */
vmw_ldu_crtc_mode_set_nofb(struct drm_crtc * crtc)203 static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc)
204 {
205 }
206
207 /**
208 * vmw_ldu_crtc_atomic_enable - Noop
209 *
210 * @crtc: CRTC associated with the new screen
211 *
212 * This is called after a mode set has been completed. Here's
213 * usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active
214 * but since for LDU the display plane is closely tied to the
215 * CRTC, it makes more sense to do those at plane update time.
216 */
vmw_ldu_crtc_atomic_enable(struct drm_crtc * crtc,struct drm_crtc_state * old_state)217 static void vmw_ldu_crtc_atomic_enable(struct drm_crtc *crtc,
218 struct drm_crtc_state *old_state)
219 {
220 }
221
222 /**
223 * vmw_ldu_crtc_atomic_disable - Turns off CRTC
224 *
225 * @crtc: CRTC to be turned off
226 */
vmw_ldu_crtc_atomic_disable(struct drm_crtc * crtc,struct drm_crtc_state * old_state)227 static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc,
228 struct drm_crtc_state *old_state)
229 {
230 }
231
232 static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
233 .gamma_set = vmw_du_crtc_gamma_set,
234 .destroy = vmw_ldu_crtc_destroy,
235 .reset = vmw_du_crtc_reset,
236 .atomic_duplicate_state = vmw_du_crtc_duplicate_state,
237 .atomic_destroy_state = vmw_du_crtc_destroy_state,
238 .set_config = drm_atomic_helper_set_config,
239 };
240
241
242 /*
243 * Legacy Display Unit encoder functions
244 */
245
vmw_ldu_encoder_destroy(struct drm_encoder * encoder)246 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
247 {
248 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
249 }
250
251 static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
252 .destroy = vmw_ldu_encoder_destroy,
253 };
254
255 /*
256 * Legacy Display Unit connector functions
257 */
258
vmw_ldu_connector_destroy(struct drm_connector * connector)259 static void vmw_ldu_connector_destroy(struct drm_connector *connector)
260 {
261 vmw_ldu_destroy(vmw_connector_to_ldu(connector));
262 }
263
264 static const struct drm_connector_funcs vmw_legacy_connector_funcs = {
265 .dpms = vmw_du_connector_dpms,
266 .detect = vmw_du_connector_detect,
267 .fill_modes = vmw_du_connector_fill_modes,
268 .destroy = vmw_ldu_connector_destroy,
269 .reset = vmw_du_connector_reset,
270 .atomic_duplicate_state = vmw_du_connector_duplicate_state,
271 .atomic_destroy_state = vmw_du_connector_destroy_state,
272 };
273
274 static const struct
275 drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = {
276 };
277
278 /*
279 * Legacy Display Plane Functions
280 */
281
282 static void
vmw_ldu_primary_plane_atomic_update(struct drm_plane * plane,struct drm_plane_state * old_state)283 vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane,
284 struct drm_plane_state *old_state)
285 {
286 struct vmw_private *dev_priv;
287 struct vmw_legacy_display_unit *ldu;
288 struct vmw_framebuffer *vfb;
289 struct drm_framebuffer *fb;
290 struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
291
292
293 ldu = vmw_crtc_to_ldu(crtc);
294 dev_priv = vmw_priv(plane->dev);
295 fb = plane->state->fb;
296
297 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
298
299 if (vfb)
300 vmw_ldu_add_active(dev_priv, ldu, vfb);
301 else
302 vmw_ldu_del_active(dev_priv, ldu);
303
304 vmw_ldu_commit_list(dev_priv);
305 }
306
307
308 static const struct drm_plane_funcs vmw_ldu_plane_funcs = {
309 .update_plane = drm_atomic_helper_update_plane,
310 .disable_plane = drm_atomic_helper_disable_plane,
311 .destroy = vmw_du_primary_plane_destroy,
312 .reset = vmw_du_plane_reset,
313 .atomic_duplicate_state = vmw_du_plane_duplicate_state,
314 .atomic_destroy_state = vmw_du_plane_destroy_state,
315 };
316
317 static const struct drm_plane_funcs vmw_ldu_cursor_funcs = {
318 .update_plane = drm_atomic_helper_update_plane,
319 .disable_plane = drm_atomic_helper_disable_plane,
320 .destroy = vmw_du_cursor_plane_destroy,
321 .reset = vmw_du_plane_reset,
322 .atomic_duplicate_state = vmw_du_plane_duplicate_state,
323 .atomic_destroy_state = vmw_du_plane_destroy_state,
324 };
325
326 /*
327 * Atomic Helpers
328 */
329 static const struct
330 drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = {
331 .atomic_check = vmw_du_cursor_plane_atomic_check,
332 .atomic_update = vmw_du_cursor_plane_atomic_update,
333 .prepare_fb = vmw_du_cursor_plane_prepare_fb,
334 .cleanup_fb = vmw_du_plane_cleanup_fb,
335 };
336
337 static const struct
338 drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = {
339 .atomic_check = vmw_du_primary_plane_atomic_check,
340 .atomic_update = vmw_ldu_primary_plane_atomic_update,
341 };
342
343 static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = {
344 .mode_set_nofb = vmw_ldu_crtc_mode_set_nofb,
345 .atomic_check = vmw_du_crtc_atomic_check,
346 .atomic_begin = vmw_du_crtc_atomic_begin,
347 .atomic_flush = vmw_du_crtc_atomic_flush,
348 .atomic_enable = vmw_ldu_crtc_atomic_enable,
349 .atomic_disable = vmw_ldu_crtc_atomic_disable,
350 };
351
352
vmw_ldu_init(struct vmw_private * dev_priv,unsigned unit)353 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
354 {
355 struct vmw_legacy_display_unit *ldu;
356 struct drm_device *dev = dev_priv->dev;
357 struct drm_connector *connector;
358 struct drm_encoder *encoder;
359 struct drm_plane *primary, *cursor;
360 struct drm_crtc *crtc;
361 int ret;
362
363 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
364 if (!ldu)
365 return -ENOMEM;
366
367 ldu->base.unit = unit;
368 crtc = &ldu->base.crtc;
369 encoder = &ldu->base.encoder;
370 connector = &ldu->base.connector;
371 primary = &ldu->base.primary;
372 cursor = &ldu->base.cursor;
373
374 INIT_LIST_HEAD(&ldu->active);
375
376 ldu->base.pref_active = (unit == 0);
377 ldu->base.pref_width = dev_priv->initial_width;
378 ldu->base.pref_height = dev_priv->initial_height;
379 ldu->base.pref_mode = NULL;
380
381 /*
382 * Remove this after enabling atomic because property values can
383 * only exist in a state object
384 */
385 ldu->base.is_implicit = true;
386
387 /* Initialize primary plane */
388 vmw_du_plane_reset(primary);
389
390 ret = drm_universal_plane_init(dev, &ldu->base.primary,
391 0, &vmw_ldu_plane_funcs,
392 vmw_primary_plane_formats,
393 ARRAY_SIZE(vmw_primary_plane_formats),
394 NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
395 if (ret) {
396 DRM_ERROR("Failed to initialize primary plane");
397 goto err_free;
398 }
399
400 drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs);
401
402 /* Initialize cursor plane */
403 vmw_du_plane_reset(cursor);
404
405 ret = drm_universal_plane_init(dev, &ldu->base.cursor,
406 0, &vmw_ldu_cursor_funcs,
407 vmw_cursor_plane_formats,
408 ARRAY_SIZE(vmw_cursor_plane_formats),
409 NULL, DRM_PLANE_TYPE_CURSOR, NULL);
410 if (ret) {
411 DRM_ERROR("Failed to initialize cursor plane");
412 drm_plane_cleanup(&ldu->base.primary);
413 goto err_free;
414 }
415
416 drm_plane_helper_add(cursor, &vmw_ldu_cursor_plane_helper_funcs);
417
418 vmw_du_connector_reset(connector);
419 ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
420 DRM_MODE_CONNECTOR_VIRTUAL);
421 if (ret) {
422 DRM_ERROR("Failed to initialize connector\n");
423 goto err_free;
424 }
425
426 drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs);
427 connector->status = vmw_du_connector_detect(connector, true);
428
429 ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
430 DRM_MODE_ENCODER_VIRTUAL, NULL);
431 if (ret) {
432 DRM_ERROR("Failed to initialize encoder\n");
433 goto err_free_connector;
434 }
435
436 (void) drm_connector_attach_encoder(connector, encoder);
437 encoder->possible_crtcs = (1 << unit);
438 encoder->possible_clones = 0;
439
440 ret = drm_connector_register(connector);
441 if (ret) {
442 DRM_ERROR("Failed to register connector\n");
443 goto err_free_encoder;
444 }
445
446 vmw_du_crtc_reset(crtc);
447 ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary,
448 &ldu->base.cursor,
449 &vmw_legacy_crtc_funcs, NULL);
450 if (ret) {
451 DRM_ERROR("Failed to initialize CRTC\n");
452 goto err_free_unregister;
453 }
454
455 drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs);
456
457 drm_mode_crtc_set_gamma_size(crtc, 256);
458
459 drm_object_attach_property(&connector->base,
460 dev_priv->hotplug_mode_update_property, 1);
461 drm_object_attach_property(&connector->base,
462 dev->mode_config.suggested_x_property, 0);
463 drm_object_attach_property(&connector->base,
464 dev->mode_config.suggested_y_property, 0);
465 if (dev_priv->implicit_placement_property)
466 drm_object_attach_property
467 (&connector->base,
468 dev_priv->implicit_placement_property,
469 1);
470
471 return 0;
472
473 err_free_unregister:
474 drm_connector_unregister(connector);
475 err_free_encoder:
476 drm_encoder_cleanup(encoder);
477 err_free_connector:
478 drm_connector_cleanup(connector);
479 err_free:
480 kfree(ldu);
481 return ret;
482 }
483
vmw_kms_ldu_init_display(struct vmw_private * dev_priv)484 int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
485 {
486 struct drm_device *dev = dev_priv->dev;
487 int i, ret;
488
489 if (dev_priv->ldu_priv) {
490 DRM_INFO("ldu system already on\n");
491 return -EINVAL;
492 }
493
494 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
495 if (!dev_priv->ldu_priv)
496 return -ENOMEM;
497
498 INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
499 dev_priv->ldu_priv->num_active = 0;
500 dev_priv->ldu_priv->last_num_active = 0;
501 dev_priv->ldu_priv->fb = NULL;
502
503 /* for old hardware without multimon only enable one display */
504 if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
505 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
506 else
507 ret = drm_vblank_init(dev, 1);
508 if (ret != 0)
509 goto err_free;
510
511 vmw_kms_create_implicit_placement_property(dev_priv);
512
513 if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
514 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
515 vmw_ldu_init(dev_priv, i);
516 else
517 vmw_ldu_init(dev_priv, 0);
518
519 dev_priv->active_display_unit = vmw_du_legacy;
520
521 DRM_INFO("Legacy Display Unit initialized\n");
522
523 return 0;
524
525 err_free:
526 kfree(dev_priv->ldu_priv);
527 dev_priv->ldu_priv = NULL;
528 return ret;
529 }
530
vmw_kms_ldu_close_display(struct vmw_private * dev_priv)531 int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
532 {
533 if (!dev_priv->ldu_priv)
534 return -ENOSYS;
535
536 BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
537
538 kfree(dev_priv->ldu_priv);
539
540 return 0;
541 }
542
543
vmw_kms_ldu_do_bo_dirty(struct vmw_private * dev_priv,struct vmw_framebuffer * framebuffer,unsigned int flags,unsigned int color,struct drm_clip_rect * clips,unsigned int num_clips,int increment)544 int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv,
545 struct vmw_framebuffer *framebuffer,
546 unsigned int flags, unsigned int color,
547 struct drm_clip_rect *clips,
548 unsigned int num_clips, int increment)
549 {
550 size_t fifo_size;
551 int i;
552
553 struct {
554 uint32_t header;
555 SVGAFifoCmdUpdate body;
556 } *cmd;
557
558 fifo_size = sizeof(*cmd) * num_clips;
559 cmd = VMW_FIFO_RESERVE(dev_priv, fifo_size);
560 if (unlikely(cmd == NULL))
561 return -ENOMEM;
562
563 memset(cmd, 0, fifo_size);
564 for (i = 0; i < num_clips; i++, clips += increment) {
565 cmd[i].header = SVGA_CMD_UPDATE;
566 cmd[i].body.x = clips->x1;
567 cmd[i].body.y = clips->y1;
568 cmd[i].body.width = clips->x2 - clips->x1;
569 cmd[i].body.height = clips->y2 - clips->y1;
570 }
571
572 vmw_fifo_commit(dev_priv, fifo_size);
573 return 0;
574 }
575
