summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
blob: 87e0b303d900690bb3b2a46146db733c298134a8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
// SPDX-License-Identifier: GPL-2.0 OR MIT
/**************************************************************************
 *
 * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 **************************************************************************/

#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_vblank.h>

#include "vmwgfx_kms.h"

#define vmw_crtc_to_ldu(x) \
	container_of(x, struct vmw_legacy_display_unit, base.crtc)
#define vmw_encoder_to_ldu(x) \
	container_of(x, struct vmw_legacy_display_unit, base.encoder)
#define vmw_connector_to_ldu(x) \
	container_of(x, struct vmw_legacy_display_unit, base.connector)

struct vmw_legacy_display {
	struct list_head active;

	unsigned num_active;
	unsigned last_num_active;

	struct vmw_framebuffer *fb;
};

/*
 * Display unit using the legacy register interface.
 */
struct vmw_legacy_display_unit {
	struct vmw_display_unit base;

	struct list_head active;
};

static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
{
	list_del_init(&ldu->active);
	vmw_du_cleanup(&ldu->base);
	kfree(ldu);
}


/*
 * Legacy Display Unit CRTC functions
 */

static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
{
	vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
}

static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
{
	struct vmw_legacy_display *lds = dev_priv->ldu_priv;
	struct vmw_legacy_display_unit *entry;
	struct drm_framebuffer *fb = NULL;
	struct drm_crtc *crtc = NULL;
	int i;

	/* If there is no display topology the host just assumes
	 * that the guest will set the same layout as the host.
	 */
	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
		int w = 0, h = 0;
		list_for_each_entry(entry, &lds->active, active) {
			crtc = &entry->base.crtc;
			w = max(w, crtc->x + crtc->mode.hdisplay);
			h = max(h, crtc->y + crtc->mode.vdisplay);
		}

		if (crtc == NULL)
			return 0;
		fb = crtc->primary->state->fb;

		return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
					  fb->format->cpp[0] * 8,
					  fb->format->depth);
	}

	if (!list_empty(&lds->active)) {
		entry = list_entry(lds->active.next, typeof(*entry), active);
		fb = entry->base.crtc.primary->state->fb;

		vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
				   fb->format->cpp[0] * 8, fb->format->depth);
	}

	/* Make sure we always show something. */
	vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
		  lds->num_active ? lds->num_active : 1);

	i = 0;
	list_for_each_entry(entry, &lds->active, active) {
		crtc = &entry->base.crtc;

		vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
		vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);

		i++;
	}

	BUG_ON(i != lds->num_active);

	lds->last_num_active = lds->num_active;

	return 0;
}

static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
			      struct vmw_legacy_display_unit *ldu)
{
	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	if (list_empty(&ldu->active))
		return 0;

	/* Must init otherwise list_empty(&ldu->active) will not work. */
	list_del_init(&ldu->active);
	if (--(ld->num_active) == 0) {
		BUG_ON(!ld->fb);
		if (ld->fb->unpin)
			ld->fb->unpin(ld->fb);
		ld->fb = NULL;
	}

	return 0;
}

static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
			      struct vmw_legacy_display_unit *ldu,
			      struct vmw_framebuffer *vfb)
{
	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
	struct vmw_legacy_display_unit *entry;
	struct list_head *at;

	BUG_ON(!ld->num_active && ld->fb);
	if (vfb != ld->fb) {
		if (ld->fb && ld->fb->unpin)
			ld->fb->unpin(ld->fb);
		vmw_svga_enable(vmw_priv);
		if (vfb->pin)
			vfb->pin(vfb);
		ld->fb = vfb;
	}

	if (!list_empty(&ldu->active))
		return 0;

	at = &ld->active;
	list_for_each_entry(entry, &ld->active, active) {
		if (entry->base.unit > ldu->base.unit)
			break;

		at = &entry->active;
	}

	list_add(&ldu->active, at);

	ld->num_active++;

	return 0;
}

/**
 * vmw_ldu_crtc_mode_set_nofb - Enable svga
 *
 * @crtc: CRTC associated with the new screen
 *
 * For LDU, just enable the svga
 */
static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
}

/**
 * vmw_ldu_crtc_atomic_enable - Noop
 *
 * @crtc: CRTC associated with the new screen
 * @state: Unused
 *
 * This is called after a mode set has been completed.  Here's
 * usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active
 * but since for LDU the display plane is closely tied to the
 * CRTC, it makes more sense to do those at plane update time.
 */
static void vmw_ldu_crtc_atomic_enable(struct drm_crtc *crtc,
				       struct drm_atomic_state *state)
{
}

/**
 * vmw_ldu_crtc_atomic_disable - Turns off CRTC
 *
 * @crtc: CRTC to be turned off
 * @state: Unused
 */
static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc,
					struct drm_atomic_state *state)
{
}

static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
	.gamma_set = vmw_du_crtc_gamma_set,
	.destroy = vmw_ldu_crtc_destroy,
	.reset = vmw_du_crtc_reset,
	.atomic_duplicate_state = vmw_du_crtc_duplicate_state,
	.atomic_destroy_state = vmw_du_crtc_destroy_state,
	.set_config = drm_atomic_helper_set_config,
	.get_vblank_counter = vmw_get_vblank_counter,
	.enable_vblank = vmw_enable_vblank,
	.disable_vblank = vmw_disable_vblank,
};


/*
 * Legacy Display Unit encoder functions
 */

static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
{
	vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
}

static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
	.destroy = vmw_ldu_encoder_destroy,
};

/*
 * Legacy Display Unit connector functions
 */

static void vmw_ldu_connector_destroy(struct drm_connector *connector)
{
	vmw_ldu_destroy(vmw_connector_to_ldu(connector));
}

static const struct drm_connector_funcs vmw_legacy_connector_funcs = {
	.dpms = vmw_du_connector_dpms,
	.detect = vmw_du_connector_detect,
	.fill_modes = vmw_du_connector_fill_modes,
	.destroy = vmw_ldu_connector_destroy,
	.reset = vmw_du_connector_reset,
	.atomic_duplicate_state = vmw_du_connector_duplicate_state,
	.atomic_destroy_state = vmw_du_connector_destroy_state,
};

static const struct
drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = {
};

/*
 * Legacy Display Plane Functions
 */

static void
vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane,
				    struct drm_atomic_state *state)
{
	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
									   plane);
	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
									   plane);
	struct vmw_private *dev_priv;
	struct vmw_legacy_display_unit *ldu;
	struct vmw_framebuffer *vfb;
	struct drm_framebuffer *fb;
	struct drm_crtc *crtc = new_state->crtc ?: old_state->crtc;


	ldu = vmw_crtc_to_ldu(crtc);
	dev_priv = vmw_priv(plane->dev);
	fb       = new_state->fb;

	vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;

	if (vfb)
		vmw_ldu_add_active(dev_priv, ldu, vfb);
	else
		vmw_ldu_del_active(dev_priv, ldu);

	vmw_ldu_commit_list(dev_priv);
}


static const struct drm_plane_funcs vmw_ldu_plane_funcs = {
	.update_plane = drm_atomic_helper_update_plane,
	.disable_plane = drm_atomic_helper_disable_plane,
	.destroy = vmw_du_primary_plane_destroy,
	.reset = vmw_du_plane_reset,
	.atomic_duplicate_state = vmw_du_plane_duplicate_state,
	.atomic_destroy_state = vmw_du_plane_destroy_state,
};

static const struct drm_plane_funcs vmw_ldu_cursor_funcs = {
	.update_plane = drm_atomic_helper_update_plane,
	.disable_plane = drm_atomic_helper_disable_plane,
	.destroy = vmw_du_cursor_plane_destroy,
	.reset = vmw_du_plane_reset,
	.atomic_duplicate_state = vmw_du_plane_duplicate_state,
	.atomic_destroy_state = vmw_du_plane_destroy_state,
};

/*
 * Atomic Helpers
 */
static const struct
drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = {
	.atomic_check = vmw_du_cursor_plane_atomic_check,
	.atomic_update = vmw_du_cursor_plane_atomic_update,
	.prepare_fb = vmw_du_cursor_plane_prepare_fb,
	.cleanup_fb = vmw_du_plane_cleanup_fb,
};

static const struct
drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = {
	.atomic_check = vmw_du_primary_plane_atomic_check,
	.atomic_update = vmw_ldu_primary_plane_atomic_update,
};

static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = {
	.mode_set_nofb = vmw_ldu_crtc_mode_set_nofb,
	.atomic_check = vmw_du_crtc_atomic_check,
	.atomic_begin = vmw_du_crtc_atomic_begin,
	.atomic_flush = vmw_du_crtc_atomic_flush,
	.atomic_enable = vmw_ldu_crtc_atomic_enable,
	.atomic_disable = vmw_ldu_crtc_atomic_disable,
};


static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
{
	struct vmw_legacy_display_unit *ldu;
	struct drm_device *dev = &dev_priv->drm;
	struct drm_connector *connector;
	struct drm_encoder *encoder;
	struct drm_plane *primary, *cursor;
	struct drm_crtc *crtc;
	int ret;

	ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
	if (!ldu)
		return -ENOMEM;

	ldu->base.unit = unit;
	crtc = &ldu->base.crtc;
	encoder = &ldu->base.encoder;
	connector = &ldu->base.connector;
	primary = &ldu->base.primary;
	cursor = &ldu->base.cursor;

	INIT_LIST_HEAD(&ldu->active);

	ldu->base.pref_active = (unit == 0);
	ldu->base.pref_width = dev_priv->initial_width;
	ldu->base.pref_height = dev_priv->initial_height;
	ldu->base.pref_mode = NULL;

	/*
	 * Remove this after enabling atomic because property values can
	 * only exist in a state object
	 */
	ldu->base.is_implicit = true;

	/* Initialize primary plane */
	ret = drm_universal_plane_init(dev, &ldu->base.primary,
				       0, &vmw_ldu_plane_funcs,
				       vmw_primary_plane_formats,
				       ARRAY_SIZE(vmw_primary_plane_formats),
				       NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
	if (ret) {
		DRM_ERROR("Failed to initialize primary plane");
		goto err_free;
	}

	drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs);

	/* Initialize cursor plane */
	ret = drm_universal_plane_init(dev, &ldu->base.cursor,
			0, &vmw_ldu_cursor_funcs,
			vmw_cursor_plane_formats,
			ARRAY_SIZE(vmw_cursor_plane_formats),
			NULL, DRM_PLANE_TYPE_CURSOR, NULL);
	if (ret) {
		DRM_ERROR("Failed to initialize cursor plane");
		drm_plane_cleanup(&ldu->base.primary);
		goto err_free;
	}

	drm_plane_helper_add(cursor, &vmw_ldu_cursor_plane_helper_funcs);

	ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
				 DRM_MODE_CONNECTOR_VIRTUAL);
	if (ret) {
		DRM_ERROR("Failed to initialize connector\n");
		goto err_free;
	}

	drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs);
	connector->status = vmw_du_connector_detect(connector, true);

	ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
			       DRM_MODE_ENCODER_VIRTUAL, NULL);
	if (ret) {
		DRM_ERROR("Failed to initialize encoder\n");
		goto err_free_connector;
	}

	(void) drm_connector_attach_encoder(connector, encoder);
	encoder->possible_crtcs = (1 << unit);
	encoder->possible_clones = 0;

	ret = drm_connector_register(connector);
	if (ret) {
		DRM_ERROR("Failed to register connector\n");
		goto err_free_encoder;
	}

	ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary,
					&ldu->base.cursor,
					&vmw_legacy_crtc_funcs, NULL);
	if (ret) {
		DRM_ERROR("Failed to initialize CRTC\n");
		goto err_free_unregister;
	}

	drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs);

	drm_mode_crtc_set_gamma_size(crtc, 256);

	drm_object_attach_property(&connector->base,
				   dev_priv->hotplug_mode_update_property, 1);
	drm_object_attach_property(&connector->base,
				   dev->mode_config.suggested_x_property, 0);
	drm_object_attach_property(&connector->base,
				   dev->mode_config.suggested_y_property, 0);
	if (dev_priv->implicit_placement_property)
		drm_object_attach_property
			(&connector->base,
			 dev_priv->implicit_placement_property,
			 1);

	return 0;

err_free_unregister:
	drm_connector_unregister(connector);
err_free_encoder:
	drm_encoder_cleanup(encoder);
err_free_connector:
	drm_connector_cleanup(connector);
err_free:
	kfree(ldu);
	return ret;
}

int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
{
	struct drm_device *dev = &dev_priv->drm;
	int i, ret;

	if (dev_priv->ldu_priv) {
		DRM_INFO("ldu system already on\n");
		return -EINVAL;
	}

	dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
	if (!dev_priv->ldu_priv)
		return -ENOMEM;

	INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
	dev_priv->ldu_priv->num_active = 0;
	dev_priv->ldu_priv->last_num_active = 0;
	dev_priv->ldu_priv->fb = NULL;

	/* for old hardware without multimon only enable one display */
	if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
		ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
	else
		ret = drm_vblank_init(dev, 1);
	if (ret != 0)
		goto err_free;

	vmw_kms_create_implicit_placement_property(dev_priv);

	if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
		for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
			vmw_ldu_init(dev_priv, i);
	else
		vmw_ldu_init(dev_priv, 0);

	dev_priv->active_display_unit = vmw_du_legacy;

	drm_mode_config_reset(dev);

	DRM_INFO("Legacy Display Unit initialized\n");

	return 0;

err_free:
	kfree(dev_priv->ldu_priv);
	dev_priv->ldu_priv = NULL;
	return ret;
}

int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
{
	if (!dev_priv->ldu_priv)
		return -ENOSYS;

	BUG_ON(!list_empty(&dev_priv->ldu_priv->active));

	kfree(dev_priv->ldu_priv);

	return 0;
}


int 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)
{
	size_t fifo_size;
	int i;

	struct {
		uint32_t header;
		SVGAFifoCmdUpdate body;
	} *cmd;

	fifo_size = sizeof(*cmd) * num_clips;
	cmd = VMW_CMD_RESERVE(dev_priv, fifo_size);
	if (unlikely(cmd == NULL))
		return -ENOMEM;

	memset(cmd, 0, fifo_size);
	for (i = 0; i < num_clips; i++, clips += increment) {
		cmd[i].header = SVGA_CMD_UPDATE;
		cmd[i].body.x = clips->x1;
		cmd[i].body.y = clips->y1;
		cmd[i].body.width = clips->x2 - clips->x1;
		cmd[i].body.height = clips->y2 - clips->y1;
	}

	vmw_cmd_commit(dev_priv, fifo_size);
	return 0;
}