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;
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 }
96
97 if (crtc == NULL)
98 return 0;
99 fb = crtc->primary->state->fb;
100
101 return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
102 fb->format->cpp[0] * 8,
103 fb->format->depth);
104 }
105
106 if (!list_empty(&lds->active)) {
107 entry = list_entry(lds->active.next, typeof(*entry), active);
108 fb = entry->base.crtc.primary->state->fb;
109
110 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
111 fb->format->cpp[0] * 8, fb->format->depth);
112 }
113
114 /* Make sure we always show something. */
115 vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
116 lds->num_active ? lds->num_active : 1);
117
118 i = 0;
119 list_for_each_entry(entry, &lds->active, active) {
120 crtc = &entry->base.crtc;
121
122 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
123 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
124 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
125 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
126 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
127 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
128
129 i++;
130 }
131
132 BUG_ON(i != lds->num_active);
133
134 lds->last_num_active = lds->num_active;
135
136 return 0;
137 }
138
vmw_ldu_del_active(struct vmw_private * vmw_priv,struct vmw_legacy_display_unit * ldu)139 static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
140 struct vmw_legacy_display_unit *ldu)
141 {
142 struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
143 if (list_empty(&ldu->active))
144 return 0;
145
146 /* Must init otherwise list_empty(&ldu->active) will not work. */
147 list_del_init(&ldu->active);
148 if (--(ld->num_active) == 0) {
149 BUG_ON(!ld->fb);
150 if (ld->fb->unpin)
151 ld->fb->unpin(ld->fb);
152 ld->fb = NULL;
153 }
154
155 return 0;
156 }
157
vmw_ldu_add_active(struct vmw_private * vmw_priv,struct vmw_legacy_display_unit * ldu,struct vmw_framebuffer * vfb)158 static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
159 struct vmw_legacy_display_unit *ldu,
160 struct vmw_framebuffer *vfb)
161 {
162 struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
163 struct vmw_legacy_display_unit *entry;
164 struct list_head *at;
165
166 BUG_ON(!ld->num_active && ld->fb);
167 if (vfb != ld->fb) {
168 if (ld->fb && ld->fb->unpin)
169 ld->fb->unpin(ld->fb);
170 vmw_svga_enable(vmw_priv);
171 if (vfb->pin)
172 vfb->pin(vfb);
173 ld->fb = vfb;
174 }
175
176 if (!list_empty(&ldu->active))
177 return 0;
178
179 at = &ld->active;
180 list_for_each_entry(entry, &ld->active, active) {
181 if (entry->base.unit > ldu->base.unit)
182 break;
183
184 at = &entry->active;
185 }
186
187 list_add(&ldu->active, at);
188
189 ld->num_active++;
190
191 return 0;
192 }
193
194 /**
195 * vmw_ldu_crtc_mode_set_nofb - Enable svga
196 *
197 * @crtc: CRTC associated with the new screen
198 *
199 * For LDU, just enable the svga
200 */
vmw_ldu_crtc_mode_set_nofb(struct drm_crtc * crtc)201 static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc)
202 {
203 }
204
205 /**
206 * vmw_ldu_crtc_atomic_enable - Noop
207 *
208 * @crtc: CRTC associated with the new screen
209 * @state: Unused
210 *
211 * This is called after a mode set has been completed. Here's
212 * usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active
213 * but since for LDU the display plane is closely tied to the
214 * CRTC, it makes more sense to do those at plane update time.
215 */
vmw_ldu_crtc_atomic_enable(struct drm_crtc * crtc,struct drm_atomic_state * state)216 static void vmw_ldu_crtc_atomic_enable(struct drm_crtc *crtc,
217 struct drm_atomic_state *state)
218 {
219 }
220
221 /**
222 * vmw_ldu_crtc_atomic_disable - Turns off CRTC
223 *
224 * @crtc: CRTC to be turned off
225 * @state: Unused
226 */
vmw_ldu_crtc_atomic_disable(struct drm_crtc * crtc,struct drm_atomic_state * state)227 static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc,
228 struct drm_atomic_state *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 .get_vblank_counter = vmw_get_vblank_counter,
240 .enable_vblank = vmw_enable_vblank,
241 .disable_vblank = vmw_disable_vblank,
242 };
243
244
245 /*
246 * Legacy Display Unit encoder functions
247 */
248
vmw_ldu_encoder_destroy(struct drm_encoder * encoder)249 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
250 {
251 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
252 }
253
254 static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
255 .destroy = vmw_ldu_encoder_destroy,
256 };
257
258 /*
259 * Legacy Display Unit connector functions
260 */
261
vmw_ldu_connector_destroy(struct drm_connector * connector)262 static void vmw_ldu_connector_destroy(struct drm_connector *connector)
263 {
264 vmw_ldu_destroy(vmw_connector_to_ldu(connector));
265 }
266
267 static const struct drm_connector_funcs vmw_legacy_connector_funcs = {
268 .dpms = vmw_du_connector_dpms,
269 .detect = vmw_du_connector_detect,
270 .fill_modes = vmw_du_connector_fill_modes,
271 .destroy = vmw_ldu_connector_destroy,
272 .reset = vmw_du_connector_reset,
273 .atomic_duplicate_state = vmw_du_connector_duplicate_state,
274 .atomic_destroy_state = vmw_du_connector_destroy_state,
275 };
276
277 static const struct
278 drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = {
279 };
280
281 /*
282 * Legacy Display Plane Functions
283 */
284
285 static void
vmw_ldu_primary_plane_atomic_update(struct drm_plane * plane,struct drm_atomic_state * state)286 vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane,
287 struct drm_atomic_state *state)
288 {
289 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
290 plane);
291 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
292 plane);
293 struct vmw_private *dev_priv;
294 struct vmw_legacy_display_unit *ldu;
295 struct vmw_framebuffer *vfb;
296 struct drm_framebuffer *fb;
297 struct drm_crtc *crtc = new_state->crtc ?: old_state->crtc;
298
299
300 ldu = vmw_crtc_to_ldu(crtc);
301 dev_priv = vmw_priv(plane->dev);
302 fb = new_state->fb;
303
304 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
305
306 if (vfb)
307 vmw_ldu_add_active(dev_priv, ldu, vfb);
308 else
309 vmw_ldu_del_active(dev_priv, ldu);
310
311 vmw_ldu_commit_list(dev_priv);
312 }
313
314
315 static const struct drm_plane_funcs vmw_ldu_plane_funcs = {
316 .update_plane = drm_atomic_helper_update_plane,
317 .disable_plane = drm_atomic_helper_disable_plane,
318 .destroy = vmw_du_primary_plane_destroy,
319 .reset = vmw_du_plane_reset,
320 .atomic_duplicate_state = vmw_du_plane_duplicate_state,
321 .atomic_destroy_state = vmw_du_plane_destroy_state,
322 };
323
324 static const struct drm_plane_funcs vmw_ldu_cursor_funcs = {
325 .update_plane = drm_atomic_helper_update_plane,
326 .disable_plane = drm_atomic_helper_disable_plane,
327 .destroy = vmw_du_cursor_plane_destroy,
328 .reset = vmw_du_plane_reset,
329 .atomic_duplicate_state = vmw_du_plane_duplicate_state,
330 .atomic_destroy_state = vmw_du_plane_destroy_state,
331 };
332
333 /*
334 * Atomic Helpers
335 */
336 static const struct
337 drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = {
338 .atomic_check = vmw_du_cursor_plane_atomic_check,
339 .atomic_update = vmw_du_cursor_plane_atomic_update,
340 .prepare_fb = vmw_du_cursor_plane_prepare_fb,
341 .cleanup_fb = vmw_du_plane_cleanup_fb,
342 };
343
344 static const struct
345 drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = {
346 .atomic_check = vmw_du_primary_plane_atomic_check,
347 .atomic_update = vmw_ldu_primary_plane_atomic_update,
348 };
349
350 static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = {
351 .mode_set_nofb = vmw_ldu_crtc_mode_set_nofb,
352 .atomic_check = vmw_du_crtc_atomic_check,
353 .atomic_begin = vmw_du_crtc_atomic_begin,
354 .atomic_flush = vmw_du_crtc_atomic_flush,
355 .atomic_enable = vmw_ldu_crtc_atomic_enable,
356 .atomic_disable = vmw_ldu_crtc_atomic_disable,
357 };
358
359
vmw_ldu_init(struct vmw_private * dev_priv,unsigned unit)360 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
361 {
362 struct vmw_legacy_display_unit *ldu;
363 struct drm_device *dev = &dev_priv->drm;
364 struct drm_connector *connector;
365 struct drm_encoder *encoder;
366 struct drm_plane *primary, *cursor;
367 struct drm_crtc *crtc;
368 int ret;
369
370 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
371 if (!ldu)
372 return -ENOMEM;
373
374 ldu->base.unit = unit;
375 crtc = &ldu->base.crtc;
376 encoder = &ldu->base.encoder;
377 connector = &ldu->base.connector;
378 primary = &ldu->base.primary;
379 cursor = &ldu->base.cursor;
380
381 INIT_LIST_HEAD(&ldu->active);
382
383 ldu->base.pref_active = (unit == 0);
384 ldu->base.pref_width = dev_priv->initial_width;
385 ldu->base.pref_height = dev_priv->initial_height;
386 ldu->base.pref_mode = NULL;
387
388 /*
389 * Remove this after enabling atomic because property values can
390 * only exist in a state object
391 */
392 ldu->base.is_implicit = true;
393
394 /* Initialize primary plane */
395 ret = drm_universal_plane_init(dev, &ldu->base.primary,
396 0, &vmw_ldu_plane_funcs,
397 vmw_primary_plane_formats,
398 ARRAY_SIZE(vmw_primary_plane_formats),
399 NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
400 if (ret) {
401 DRM_ERROR("Failed to initialize primary plane");
402 goto err_free;
403 }
404
405 drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs);
406
407 /*
408 * We're going to be using traces and software cursors
409 */
410 if (vmw_cmd_supported(dev_priv)) {
411 /* Initialize cursor plane */
412 ret = drm_universal_plane_init(dev, &ldu->base.cursor,
413 0, &vmw_ldu_cursor_funcs,
414 vmw_cursor_plane_formats,
415 ARRAY_SIZE(vmw_cursor_plane_formats),
416 NULL, DRM_PLANE_TYPE_CURSOR, NULL);
417 if (ret) {
418 DRM_ERROR("Failed to initialize cursor plane");
419 drm_plane_cleanup(&ldu->base.primary);
420 goto err_free;
421 }
422
423 drm_plane_helper_add(cursor, &vmw_ldu_cursor_plane_helper_funcs);
424 }
425
426 ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
427 DRM_MODE_CONNECTOR_VIRTUAL);
428 if (ret) {
429 DRM_ERROR("Failed to initialize connector\n");
430 goto err_free;
431 }
432
433 drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs);
434 connector->status = vmw_du_connector_detect(connector, true);
435
436 ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
437 DRM_MODE_ENCODER_VIRTUAL, NULL);
438 if (ret) {
439 DRM_ERROR("Failed to initialize encoder\n");
440 goto err_free_connector;
441 }
442
443 (void) drm_connector_attach_encoder(connector, encoder);
444 encoder->possible_crtcs = (1 << unit);
445 encoder->possible_clones = 0;
446
447 ret = drm_connector_register(connector);
448 if (ret) {
449 DRM_ERROR("Failed to register connector\n");
450 goto err_free_encoder;
451 }
452
453 ret = drm_crtc_init_with_planes(
454 dev, crtc, &ldu->base.primary,
455 vmw_cmd_supported(dev_priv) ? &ldu->base.cursor : NULL,
456 &vmw_legacy_crtc_funcs, NULL);
457 if (ret) {
458 DRM_ERROR("Failed to initialize CRTC\n");
459 goto err_free_unregister;
460 }
461
462 drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs);
463
464 drm_mode_crtc_set_gamma_size(crtc, 256);
465
466 drm_object_attach_property(&connector->base,
467 dev_priv->hotplug_mode_update_property, 1);
468 drm_object_attach_property(&connector->base,
469 dev->mode_config.suggested_x_property, 0);
470 drm_object_attach_property(&connector->base,
471 dev->mode_config.suggested_y_property, 0);
472 if (dev_priv->implicit_placement_property)
473 drm_object_attach_property
474 (&connector->base,
475 dev_priv->implicit_placement_property,
476 1);
477
478 return 0;
479
480 err_free_unregister:
481 drm_connector_unregister(connector);
482 err_free_encoder:
483 drm_encoder_cleanup(encoder);
484 err_free_connector:
485 drm_connector_cleanup(connector);
486 err_free:
487 kfree(ldu);
488 return ret;
489 }
490
vmw_kms_ldu_init_display(struct vmw_private * dev_priv)491 int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
492 {
493 struct drm_device *dev = &dev_priv->drm;
494 int i, ret;
495
496 if (unlikely(dev_priv->ldu_priv)) {
497 return -EINVAL;
498 }
499
500 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
501 if (!dev_priv->ldu_priv)
502 return -ENOMEM;
503
504 INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
505 dev_priv->ldu_priv->num_active = 0;
506 dev_priv->ldu_priv->last_num_active = 0;
507 dev_priv->ldu_priv->fb = NULL;
508
509 /* for old hardware without multimon only enable one display */
510 if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
511 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
512 else
513 ret = drm_vblank_init(dev, 1);
514 if (ret != 0)
515 goto err_free;
516
517 vmw_kms_create_implicit_placement_property(dev_priv);
518
519 if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
520 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
521 vmw_ldu_init(dev_priv, i);
522 else
523 vmw_ldu_init(dev_priv, 0);
524
525 dev_priv->active_display_unit = vmw_du_legacy;
526
527 drm_mode_config_reset(dev);
528
529 return 0;
530
531 err_free:
532 kfree(dev_priv->ldu_priv);
533 dev_priv->ldu_priv = NULL;
534 return ret;
535 }
536
vmw_kms_ldu_close_display(struct vmw_private * dev_priv)537 int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
538 {
539 if (!dev_priv->ldu_priv)
540 return -ENOSYS;
541
542 BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
543
544 kfree(dev_priv->ldu_priv);
545
546 return 0;
547 }
548
549
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)550 int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv,
551 struct vmw_framebuffer *framebuffer,
552 unsigned int flags, unsigned int color,
553 struct drm_clip_rect *clips,
554 unsigned int num_clips, int increment)
555 {
556 size_t fifo_size;
557 int i;
558
559 struct {
560 uint32_t header;
561 SVGAFifoCmdUpdate body;
562 } *cmd;
563
564 fifo_size = sizeof(*cmd) * num_clips;
565 cmd = VMW_CMD_RESERVE(dev_priv, fifo_size);
566 if (unlikely(cmd == NULL))
567 return -ENOMEM;
568
569 memset(cmd, 0, fifo_size);
570 for (i = 0; i < num_clips; i++, clips += increment) {
571 cmd[i].header = SVGA_CMD_UPDATE;
572 cmd[i].body.x = clips->x1;
573 cmd[i].body.y = clips->y1;
574 cmd[i].body.width = clips->x2 - clips->x1;
575 cmd[i].body.height = clips->y2 - clips->y1;
576 }
577
578 vmw_cmd_commit(dev_priv, fifo_size);
579 return 0;
580 }
581
