xref: /openbmc/linux/drivers/gpu/drm/qxl/qxl_display.c (revision 82e6fdd6)
1 /*
2  * Copyright 2013 Red Hat Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: Dave Airlie
23  *          Alon Levy
24  */
25 
26 #include <linux/crc32.h>
27 #include <drm/drm_crtc_helper.h>
28 #include <drm/drm_plane_helper.h>
29 #include <drm/drm_atomic_helper.h>
30 #include <drm/drm_atomic.h>
31 
32 #include "qxl_drv.h"
33 #include "qxl_object.h"
34 
35 static bool qxl_head_enabled(struct qxl_head *head)
36 {
37 	return head->width && head->height;
38 }
39 
40 static void qxl_alloc_client_monitors_config(struct qxl_device *qdev, unsigned count)
41 {
42 	if (qdev->client_monitors_config &&
43 	    count > qdev->client_monitors_config->count) {
44 		kfree(qdev->client_monitors_config);
45 		qdev->client_monitors_config = NULL;
46 	}
47 	if (!qdev->client_monitors_config) {
48 		qdev->client_monitors_config = kzalloc(
49 				sizeof(struct qxl_monitors_config) +
50 				sizeof(struct qxl_head) * count, GFP_KERNEL);
51 		if (!qdev->client_monitors_config) {
52 			qxl_io_log(qdev,
53 				   "%s: allocation failure for %u heads\n",
54 				   __func__, count);
55 			return;
56 		}
57 	}
58 	qdev->client_monitors_config->count = count;
59 }
60 
61 enum {
62 	MONITORS_CONFIG_MODIFIED,
63 	MONITORS_CONFIG_UNCHANGED,
64 	MONITORS_CONFIG_BAD_CRC,
65 };
66 
67 static int qxl_display_copy_rom_client_monitors_config(struct qxl_device *qdev)
68 {
69 	int i;
70 	int num_monitors;
71 	uint32_t crc;
72 	int status = MONITORS_CONFIG_UNCHANGED;
73 
74 	num_monitors = qdev->rom->client_monitors_config.count;
75 	crc = crc32(0, (const uint8_t *)&qdev->rom->client_monitors_config,
76 		  sizeof(qdev->rom->client_monitors_config));
77 	if (crc != qdev->rom->client_monitors_config_crc) {
78 		qxl_io_log(qdev, "crc mismatch: have %X (%zd) != %X\n", crc,
79 			   sizeof(qdev->rom->client_monitors_config),
80 			   qdev->rom->client_monitors_config_crc);
81 		return MONITORS_CONFIG_BAD_CRC;
82 	}
83 	if (!num_monitors) {
84 		DRM_DEBUG_KMS("no client monitors configured\n");
85 		return status;
86 	}
87 	if (num_monitors > qdev->monitors_config->max_allowed) {
88 		DRM_DEBUG_KMS("client monitors list will be truncated: %d < %d\n",
89 			      qdev->monitors_config->max_allowed, num_monitors);
90 		num_monitors = qdev->monitors_config->max_allowed;
91 	} else {
92 		num_monitors = qdev->rom->client_monitors_config.count;
93 	}
94 	if (qdev->client_monitors_config
95 	      && (num_monitors != qdev->client_monitors_config->count)) {
96 		status = MONITORS_CONFIG_MODIFIED;
97 	}
98 	qxl_alloc_client_monitors_config(qdev, num_monitors);
99 	/* we copy max from the client but it isn't used */
100 	qdev->client_monitors_config->max_allowed =
101 				qdev->monitors_config->max_allowed;
102 	for (i = 0 ; i < qdev->client_monitors_config->count ; ++i) {
103 		struct qxl_urect *c_rect =
104 			&qdev->rom->client_monitors_config.heads[i];
105 		struct qxl_head *client_head =
106 			&qdev->client_monitors_config->heads[i];
107 		if (client_head->x != c_rect->left) {
108 			client_head->x = c_rect->left;
109 			status = MONITORS_CONFIG_MODIFIED;
110 		}
111 		if (client_head->y != c_rect->top) {
112 			client_head->y = c_rect->top;
113 			status = MONITORS_CONFIG_MODIFIED;
114 		}
115 		if (client_head->width != c_rect->right - c_rect->left) {
116 			client_head->width = c_rect->right - c_rect->left;
117 			status = MONITORS_CONFIG_MODIFIED;
118 		}
119 		if (client_head->height != c_rect->bottom - c_rect->top) {
120 			client_head->height = c_rect->bottom - c_rect->top;
121 			status = MONITORS_CONFIG_MODIFIED;
122 		}
123 		if (client_head->surface_id != 0) {
124 			client_head->surface_id = 0;
125 			status = MONITORS_CONFIG_MODIFIED;
126 		}
127 		if (client_head->id != i) {
128 			client_head->id = i;
129 			status = MONITORS_CONFIG_MODIFIED;
130 		}
131 		if (client_head->flags != 0) {
132 			client_head->flags = 0;
133 			status = MONITORS_CONFIG_MODIFIED;
134 		}
135 		DRM_DEBUG_KMS("read %dx%d+%d+%d\n", client_head->width, client_head->height,
136 			  client_head->x, client_head->y);
137 	}
138 
139 	return status;
140 }
141 
142 static void qxl_update_offset_props(struct qxl_device *qdev)
143 {
144 	struct drm_device *dev = &qdev->ddev;
145 	struct drm_connector *connector;
146 	struct qxl_output *output;
147 	struct qxl_head *head;
148 
149 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
150 		output = drm_connector_to_qxl_output(connector);
151 
152 		head = &qdev->client_monitors_config->heads[output->index];
153 
154 		drm_object_property_set_value(&connector->base,
155 			dev->mode_config.suggested_x_property, head->x);
156 		drm_object_property_set_value(&connector->base,
157 			dev->mode_config.suggested_y_property, head->y);
158 	}
159 }
160 
161 void qxl_display_read_client_monitors_config(struct qxl_device *qdev)
162 {
163 	struct drm_device *dev = &qdev->ddev;
164 	int status, retries;
165 
166 	for (retries = 0; retries < 10; retries++) {
167 		status = qxl_display_copy_rom_client_monitors_config(qdev);
168 		if (status != MONITORS_CONFIG_BAD_CRC)
169 			break;
170 		udelay(5);
171 	}
172 	if (status == MONITORS_CONFIG_BAD_CRC) {
173 		qxl_io_log(qdev, "config: bad crc\n");
174 		DRM_DEBUG_KMS("ignoring client monitors config: bad crc");
175 		return;
176 	}
177 	if (status == MONITORS_CONFIG_UNCHANGED) {
178 		qxl_io_log(qdev, "config: unchanged\n");
179 		DRM_DEBUG_KMS("ignoring client monitors config: unchanged");
180 		return;
181 	}
182 
183 	drm_modeset_lock_all(dev);
184 	qxl_update_offset_props(qdev);
185 	drm_modeset_unlock_all(dev);
186 	if (!drm_helper_hpd_irq_event(dev)) {
187 		/* notify that the monitor configuration changed, to
188 		   adjust at the arbitrary resolution */
189 		drm_kms_helper_hotplug_event(dev);
190 	}
191 }
192 
193 static int qxl_add_monitors_config_modes(struct drm_connector *connector,
194                                          unsigned *pwidth,
195                                          unsigned *pheight)
196 {
197 	struct drm_device *dev = connector->dev;
198 	struct qxl_device *qdev = dev->dev_private;
199 	struct qxl_output *output = drm_connector_to_qxl_output(connector);
200 	int h = output->index;
201 	struct drm_display_mode *mode = NULL;
202 	struct qxl_head *head;
203 
204 	if (!qdev->monitors_config)
205 		return 0;
206 	if (h >= qdev->monitors_config->max_allowed)
207 		return 0;
208 	if (!qdev->client_monitors_config)
209 		return 0;
210 	if (h >= qdev->client_monitors_config->count)
211 		return 0;
212 
213 	head = &qdev->client_monitors_config->heads[h];
214 	DRM_DEBUG_KMS("head %d is %dx%d\n", h, head->width, head->height);
215 
216 	mode = drm_cvt_mode(dev, head->width, head->height, 60, false, false,
217 			    false);
218 	mode->type |= DRM_MODE_TYPE_PREFERRED;
219 	mode->hdisplay = head->width;
220 	mode->vdisplay = head->height;
221 	drm_mode_set_name(mode);
222 	*pwidth = head->width;
223 	*pheight = head->height;
224 	drm_mode_probed_add(connector, mode);
225 	/* remember the last custom size for mode validation */
226 	qdev->monitors_config_width = mode->hdisplay;
227 	qdev->monitors_config_height = mode->vdisplay;
228 	return 1;
229 }
230 
231 static struct mode_size {
232 	int w;
233 	int h;
234 } common_modes[] = {
235 	{ 640,  480},
236 	{ 720,  480},
237 	{ 800,  600},
238 	{ 848,  480},
239 	{1024,  768},
240 	{1152,  768},
241 	{1280,  720},
242 	{1280,  800},
243 	{1280,  854},
244 	{1280,  960},
245 	{1280, 1024},
246 	{1440,  900},
247 	{1400, 1050},
248 	{1680, 1050},
249 	{1600, 1200},
250 	{1920, 1080},
251 	{1920, 1200}
252 };
253 
254 static int qxl_add_common_modes(struct drm_connector *connector,
255                                 unsigned pwidth,
256                                 unsigned pheight)
257 {
258 	struct drm_device *dev = connector->dev;
259 	struct drm_display_mode *mode = NULL;
260 	int i;
261 	for (i = 0; i < ARRAY_SIZE(common_modes); i++) {
262 		mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h,
263 				    60, false, false, false);
264 		if (common_modes[i].w == pwidth && common_modes[i].h == pheight)
265 			mode->type |= DRM_MODE_TYPE_PREFERRED;
266 		drm_mode_probed_add(connector, mode);
267 	}
268 	return i - 1;
269 }
270 
271 static void qxl_crtc_atomic_flush(struct drm_crtc *crtc,
272 				  struct drm_crtc_state *old_crtc_state)
273 {
274 	struct drm_device *dev = crtc->dev;
275 	struct drm_pending_vblank_event *event;
276 	unsigned long flags;
277 
278 	if (crtc->state && crtc->state->event) {
279 		event = crtc->state->event;
280 		crtc->state->event = NULL;
281 
282 		spin_lock_irqsave(&dev->event_lock, flags);
283 		drm_crtc_send_vblank_event(crtc, event);
284 		spin_unlock_irqrestore(&dev->event_lock, flags);
285 	}
286 }
287 
288 static void qxl_crtc_destroy(struct drm_crtc *crtc)
289 {
290 	struct qxl_crtc *qxl_crtc = to_qxl_crtc(crtc);
291 
292 	qxl_bo_unref(&qxl_crtc->cursor_bo);
293 	drm_crtc_cleanup(crtc);
294 	kfree(qxl_crtc);
295 }
296 
297 static const struct drm_crtc_funcs qxl_crtc_funcs = {
298 	.set_config = drm_atomic_helper_set_config,
299 	.destroy = qxl_crtc_destroy,
300 	.page_flip = drm_atomic_helper_page_flip,
301 	.reset = drm_atomic_helper_crtc_reset,
302 	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
303 	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
304 };
305 
306 void qxl_user_framebuffer_destroy(struct drm_framebuffer *fb)
307 {
308 	struct qxl_framebuffer *qxl_fb = to_qxl_framebuffer(fb);
309 	struct qxl_bo *bo = gem_to_qxl_bo(qxl_fb->obj);
310 
311 	WARN_ON(bo->shadow);
312 	drm_gem_object_unreference_unlocked(qxl_fb->obj);
313 	drm_framebuffer_cleanup(fb);
314 	kfree(qxl_fb);
315 }
316 
317 static int qxl_framebuffer_surface_dirty(struct drm_framebuffer *fb,
318 					 struct drm_file *file_priv,
319 					 unsigned flags, unsigned color,
320 					 struct drm_clip_rect *clips,
321 					 unsigned num_clips)
322 {
323 	/* TODO: vmwgfx where this was cribbed from had locking. Why? */
324 	struct qxl_framebuffer *qxl_fb = to_qxl_framebuffer(fb);
325 	struct qxl_device *qdev = qxl_fb->base.dev->dev_private;
326 	struct drm_clip_rect norect;
327 	struct qxl_bo *qobj;
328 	int inc = 1;
329 
330 	drm_modeset_lock_all(fb->dev);
331 
332 	qobj = gem_to_qxl_bo(qxl_fb->obj);
333 	/* if we aren't primary surface ignore this */
334 	if (!qobj->is_primary) {
335 		drm_modeset_unlock_all(fb->dev);
336 		return 0;
337 	}
338 
339 	if (!num_clips) {
340 		num_clips = 1;
341 		clips = &norect;
342 		norect.x1 = norect.y1 = 0;
343 		norect.x2 = fb->width;
344 		norect.y2 = fb->height;
345 	} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
346 		num_clips /= 2;
347 		inc = 2; /* skip source rects */
348 	}
349 
350 	qxl_draw_dirty_fb(qdev, qxl_fb, qobj, flags, color,
351 			  clips, num_clips, inc);
352 
353 	drm_modeset_unlock_all(fb->dev);
354 
355 	return 0;
356 }
357 
358 static const struct drm_framebuffer_funcs qxl_fb_funcs = {
359 	.destroy = qxl_user_framebuffer_destroy,
360 	.dirty = qxl_framebuffer_surface_dirty,
361 /*	TODO?
362  *	.create_handle = qxl_user_framebuffer_create_handle, */
363 };
364 
365 int
366 qxl_framebuffer_init(struct drm_device *dev,
367 		     struct qxl_framebuffer *qfb,
368 		     const struct drm_mode_fb_cmd2 *mode_cmd,
369 		     struct drm_gem_object *obj,
370 		     const struct drm_framebuffer_funcs *funcs)
371 {
372 	int ret;
373 
374 	qfb->obj = obj;
375 	drm_helper_mode_fill_fb_struct(dev, &qfb->base, mode_cmd);
376 	ret = drm_framebuffer_init(dev, &qfb->base, funcs);
377 	if (ret) {
378 		qfb->obj = NULL;
379 		return ret;
380 	}
381 	return 0;
382 }
383 
384 static bool qxl_crtc_mode_fixup(struct drm_crtc *crtc,
385 				  const struct drm_display_mode *mode,
386 				  struct drm_display_mode *adjusted_mode)
387 {
388 	struct drm_device *dev = crtc->dev;
389 	struct qxl_device *qdev = dev->dev_private;
390 
391 	qxl_io_log(qdev, "%s: (%d,%d) => (%d,%d)\n",
392 		   __func__,
393 		   mode->hdisplay, mode->vdisplay,
394 		   adjusted_mode->hdisplay,
395 		   adjusted_mode->vdisplay);
396 	return true;
397 }
398 
399 static void
400 qxl_send_monitors_config(struct qxl_device *qdev)
401 {
402 	int i;
403 
404 	BUG_ON(!qdev->ram_header->monitors_config);
405 
406 	if (qdev->monitors_config->count == 0) {
407 		qxl_io_log(qdev, "%s: 0 monitors??\n", __func__);
408 		return;
409 	}
410 	for (i = 0 ; i < qdev->monitors_config->count ; ++i) {
411 		struct qxl_head *head = &qdev->monitors_config->heads[i];
412 
413 		if (head->y > 8192 || head->x > 8192 ||
414 		    head->width > 8192 || head->height > 8192) {
415 			DRM_ERROR("head %d wrong: %dx%d+%d+%d\n",
416 				  i, head->width, head->height,
417 				  head->x, head->y);
418 			return;
419 		}
420 	}
421 	qxl_io_monitors_config(qdev);
422 }
423 
424 static void qxl_monitors_config_set(struct qxl_device *qdev,
425 				    int index,
426 				    unsigned x, unsigned y,
427 				    unsigned width, unsigned height,
428 				    unsigned surf_id)
429 {
430 	DRM_DEBUG_KMS("%d:%dx%d+%d+%d\n", index, width, height, x, y);
431 	qdev->monitors_config->heads[index].x = x;
432 	qdev->monitors_config->heads[index].y = y;
433 	qdev->monitors_config->heads[index].width = width;
434 	qdev->monitors_config->heads[index].height = height;
435 	qdev->monitors_config->heads[index].surface_id = surf_id;
436 
437 }
438 
439 static void qxl_mode_set_nofb(struct drm_crtc *crtc)
440 {
441 	struct qxl_device *qdev = crtc->dev->dev_private;
442 	struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
443 	struct drm_display_mode *mode = &crtc->mode;
444 
445 	DRM_DEBUG("Mode set (%d,%d)\n",
446 		  mode->hdisplay, mode->vdisplay);
447 
448 	qxl_monitors_config_set(qdev, qcrtc->index, 0, 0,
449 				mode->hdisplay,	mode->vdisplay, 0);
450 
451 }
452 
453 static void qxl_crtc_atomic_enable(struct drm_crtc *crtc,
454 				   struct drm_crtc_state *old_state)
455 {
456 	DRM_DEBUG("\n");
457 }
458 
459 static void qxl_crtc_atomic_disable(struct drm_crtc *crtc,
460 				    struct drm_crtc_state *old_state)
461 {
462 	struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
463 	struct qxl_device *qdev = crtc->dev->dev_private;
464 
465 	qxl_monitors_config_set(qdev, qcrtc->index, 0, 0, 0, 0, 0);
466 
467 	qxl_send_monitors_config(qdev);
468 }
469 
470 static const struct drm_crtc_helper_funcs qxl_crtc_helper_funcs = {
471 	.mode_fixup = qxl_crtc_mode_fixup,
472 	.mode_set_nofb = qxl_mode_set_nofb,
473 	.atomic_flush = qxl_crtc_atomic_flush,
474 	.atomic_enable = qxl_crtc_atomic_enable,
475 	.atomic_disable = qxl_crtc_atomic_disable,
476 };
477 
478 static int qxl_primary_atomic_check(struct drm_plane *plane,
479 				    struct drm_plane_state *state)
480 {
481 	struct qxl_device *qdev = plane->dev->dev_private;
482 	struct qxl_framebuffer *qfb;
483 	struct qxl_bo *bo;
484 
485 	if (!state->crtc || !state->fb)
486 		return 0;
487 
488 	qfb = to_qxl_framebuffer(state->fb);
489 	bo = gem_to_qxl_bo(qfb->obj);
490 
491 	if (bo->surf.stride * bo->surf.height > qdev->vram_size) {
492 		DRM_ERROR("Mode doesn't fit in vram size (vgamem)");
493 		return -EINVAL;
494 	}
495 
496 	return 0;
497 }
498 
499 static int qxl_primary_apply_cursor(struct drm_plane *plane)
500 {
501 	struct drm_device *dev = plane->dev;
502 	struct qxl_device *qdev = dev->dev_private;
503 	struct drm_framebuffer *fb = plane->state->fb;
504 	struct qxl_crtc *qcrtc = to_qxl_crtc(plane->state->crtc);
505 	struct qxl_cursor_cmd *cmd;
506 	struct qxl_release *release;
507 	int ret = 0;
508 
509 	if (!qcrtc->cursor_bo)
510 		return 0;
511 
512 	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
513 					 QXL_RELEASE_CURSOR_CMD,
514 					 &release, NULL);
515 	if (ret)
516 		return ret;
517 
518 	ret = qxl_release_list_add(release, qcrtc->cursor_bo);
519 	if (ret)
520 		goto out_free_release;
521 
522 	ret = qxl_release_reserve_list(release, false);
523 	if (ret)
524 		goto out_free_release;
525 
526 	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
527 	cmd->type = QXL_CURSOR_SET;
528 	cmd->u.set.position.x = plane->state->crtc_x + fb->hot_x;
529 	cmd->u.set.position.y = plane->state->crtc_y + fb->hot_y;
530 
531 	cmd->u.set.shape = qxl_bo_physical_address(qdev, qcrtc->cursor_bo, 0);
532 
533 	cmd->u.set.visible = 1;
534 	qxl_release_unmap(qdev, release, &cmd->release_info);
535 
536 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
537 	qxl_release_fence_buffer_objects(release);
538 
539 	return ret;
540 
541 out_free_release:
542 	qxl_release_free(qdev, release);
543 	return ret;
544 }
545 
546 static void qxl_primary_atomic_update(struct drm_plane *plane,
547 				      struct drm_plane_state *old_state)
548 {
549 	struct qxl_device *qdev = plane->dev->dev_private;
550 	struct qxl_framebuffer *qfb =
551 		to_qxl_framebuffer(plane->state->fb);
552 	struct qxl_framebuffer *qfb_old;
553 	struct qxl_bo *bo = gem_to_qxl_bo(qfb->obj);
554 	struct qxl_bo *bo_old;
555 	struct drm_clip_rect norect = {
556 	    .x1 = 0,
557 	    .y1 = 0,
558 	    .x2 = qfb->base.width,
559 	    .y2 = qfb->base.height
560 	};
561 	int ret;
562 	bool same_shadow = false;
563 
564 	if (old_state->fb) {
565 		qfb_old = to_qxl_framebuffer(old_state->fb);
566 		bo_old = gem_to_qxl_bo(qfb_old->obj);
567 	} else {
568 		bo_old = NULL;
569 	}
570 
571 	if (bo == bo_old)
572 		return;
573 
574 	if (bo_old && bo_old->shadow && bo->shadow &&
575 	    bo_old->shadow == bo->shadow) {
576 		same_shadow = true;
577 	}
578 
579 	if (bo_old && bo_old->is_primary) {
580 		if (!same_shadow)
581 			qxl_io_destroy_primary(qdev);
582 		bo_old->is_primary = false;
583 
584 		ret = qxl_primary_apply_cursor(plane);
585 		if (ret)
586 			DRM_ERROR(
587 			"could not set cursor after creating primary");
588 	}
589 
590 	if (!bo->is_primary) {
591 		if (!same_shadow)
592 			qxl_io_create_primary(qdev, 0, bo);
593 		bo->is_primary = true;
594 	}
595 
596 	qxl_draw_dirty_fb(qdev, qfb, bo, 0, 0, &norect, 1, 1);
597 }
598 
599 static void qxl_primary_atomic_disable(struct drm_plane *plane,
600 				       struct drm_plane_state *old_state)
601 {
602 	struct qxl_device *qdev = plane->dev->dev_private;
603 
604 	if (old_state->fb) {
605 		struct qxl_framebuffer *qfb =
606 			to_qxl_framebuffer(old_state->fb);
607 		struct qxl_bo *bo = gem_to_qxl_bo(qfb->obj);
608 
609 		if (bo->is_primary) {
610 			qxl_io_destroy_primary(qdev);
611 			bo->is_primary = false;
612 		}
613 	}
614 }
615 
616 static int qxl_plane_atomic_check(struct drm_plane *plane,
617 				  struct drm_plane_state *state)
618 {
619 	return 0;
620 }
621 
622 static void qxl_cursor_atomic_update(struct drm_plane *plane,
623 				     struct drm_plane_state *old_state)
624 {
625 	struct drm_device *dev = plane->dev;
626 	struct qxl_device *qdev = dev->dev_private;
627 	struct drm_framebuffer *fb = plane->state->fb;
628 	struct qxl_crtc *qcrtc = to_qxl_crtc(plane->state->crtc);
629 	struct qxl_release *release;
630 	struct qxl_cursor_cmd *cmd;
631 	struct qxl_cursor *cursor;
632 	struct drm_gem_object *obj;
633 	struct qxl_bo *cursor_bo = NULL, *user_bo = NULL;
634 	int ret;
635 	void *user_ptr;
636 	int size = 64*64*4;
637 
638 	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
639 					 QXL_RELEASE_CURSOR_CMD,
640 					 &release, NULL);
641 	if (ret)
642 		return;
643 
644 	if (fb != old_state->fb) {
645 		obj = to_qxl_framebuffer(fb)->obj;
646 		user_bo = gem_to_qxl_bo(obj);
647 
648 		/* pinning is done in the prepare/cleanup framevbuffer */
649 		ret = qxl_bo_kmap(user_bo, &user_ptr);
650 		if (ret)
651 			goto out_free_release;
652 
653 		ret = qxl_alloc_bo_reserved(qdev, release,
654 					    sizeof(struct qxl_cursor) + size,
655 					    &cursor_bo);
656 		if (ret)
657 			goto out_kunmap;
658 
659 		ret = qxl_release_reserve_list(release, true);
660 		if (ret)
661 			goto out_free_bo;
662 
663 		ret = qxl_bo_kmap(cursor_bo, (void **)&cursor);
664 		if (ret)
665 			goto out_backoff;
666 
667 		cursor->header.unique = 0;
668 		cursor->header.type = SPICE_CURSOR_TYPE_ALPHA;
669 		cursor->header.width = 64;
670 		cursor->header.height = 64;
671 		cursor->header.hot_spot_x = fb->hot_x;
672 		cursor->header.hot_spot_y = fb->hot_y;
673 		cursor->data_size = size;
674 		cursor->chunk.next_chunk = 0;
675 		cursor->chunk.prev_chunk = 0;
676 		cursor->chunk.data_size = size;
677 		memcpy(cursor->chunk.data, user_ptr, size);
678 		qxl_bo_kunmap(cursor_bo);
679 		qxl_bo_kunmap(user_bo);
680 
681 		cmd = (struct qxl_cursor_cmd *) qxl_release_map(qdev, release);
682 		cmd->u.set.visible = 1;
683 		cmd->u.set.shape = qxl_bo_physical_address(qdev,
684 							   cursor_bo, 0);
685 		cmd->type = QXL_CURSOR_SET;
686 
687 		qxl_bo_unref(&qcrtc->cursor_bo);
688 		qcrtc->cursor_bo = cursor_bo;
689 		cursor_bo = NULL;
690 	} else {
691 
692 		ret = qxl_release_reserve_list(release, true);
693 		if (ret)
694 			goto out_free_release;
695 
696 		cmd = (struct qxl_cursor_cmd *) qxl_release_map(qdev, release);
697 		cmd->type = QXL_CURSOR_MOVE;
698 	}
699 
700 	cmd->u.position.x = plane->state->crtc_x + fb->hot_x;
701 	cmd->u.position.y = plane->state->crtc_y + fb->hot_y;
702 
703 	qxl_release_unmap(qdev, release, &cmd->release_info);
704 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
705 	qxl_release_fence_buffer_objects(release);
706 
707 	qxl_bo_unref(&cursor_bo);
708 
709 	return;
710 
711 out_backoff:
712 	qxl_release_backoff_reserve_list(release);
713 out_free_bo:
714 	qxl_bo_unref(&cursor_bo);
715 out_kunmap:
716 	qxl_bo_kunmap(user_bo);
717 out_free_release:
718 	qxl_release_free(qdev, release);
719 	return;
720 
721 }
722 
723 static void qxl_cursor_atomic_disable(struct drm_plane *plane,
724 				      struct drm_plane_state *old_state)
725 {
726 	struct qxl_device *qdev = plane->dev->dev_private;
727 	struct qxl_release *release;
728 	struct qxl_cursor_cmd *cmd;
729 	int ret;
730 
731 	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
732 					 QXL_RELEASE_CURSOR_CMD,
733 					 &release, NULL);
734 	if (ret)
735 		return;
736 
737 	ret = qxl_release_reserve_list(release, true);
738 	if (ret) {
739 		qxl_release_free(qdev, release);
740 		return;
741 	}
742 
743 	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
744 	cmd->type = QXL_CURSOR_HIDE;
745 	qxl_release_unmap(qdev, release, &cmd->release_info);
746 
747 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
748 	qxl_release_fence_buffer_objects(release);
749 }
750 
751 static int qxl_plane_prepare_fb(struct drm_plane *plane,
752 				struct drm_plane_state *new_state)
753 {
754 	struct qxl_device *qdev = plane->dev->dev_private;
755 	struct drm_gem_object *obj;
756 	struct qxl_bo *user_bo, *old_bo = NULL;
757 	int ret;
758 
759 	if (!new_state->fb)
760 		return 0;
761 
762 	obj = to_qxl_framebuffer(new_state->fb)->obj;
763 	user_bo = gem_to_qxl_bo(obj);
764 
765 	if (plane->type == DRM_PLANE_TYPE_PRIMARY &&
766 	    user_bo->is_dumb && !user_bo->shadow) {
767 		if (plane->state->fb) {
768 			obj = to_qxl_framebuffer(plane->state->fb)->obj;
769 			old_bo = gem_to_qxl_bo(obj);
770 		}
771 		if (old_bo && old_bo->shadow &&
772 		    user_bo->gem_base.size == old_bo->gem_base.size &&
773 		    plane->state->crtc     == new_state->crtc &&
774 		    plane->state->crtc_w   == new_state->crtc_w &&
775 		    plane->state->crtc_h   == new_state->crtc_h &&
776 		    plane->state->src_x    == new_state->src_x &&
777 		    plane->state->src_y    == new_state->src_y &&
778 		    plane->state->src_w    == new_state->src_w &&
779 		    plane->state->src_h    == new_state->src_h &&
780 		    plane->state->rotation == new_state->rotation &&
781 		    plane->state->zpos     == new_state->zpos) {
782 			drm_gem_object_get(&old_bo->shadow->gem_base);
783 			user_bo->shadow = old_bo->shadow;
784 		} else {
785 			qxl_bo_create(qdev, user_bo->gem_base.size,
786 				      true, true, QXL_GEM_DOMAIN_VRAM, NULL,
787 				      &user_bo->shadow);
788 		}
789 	}
790 
791 	ret = qxl_bo_pin(user_bo, QXL_GEM_DOMAIN_CPU, NULL);
792 	if (ret)
793 		return ret;
794 
795 	return 0;
796 }
797 
798 static void qxl_plane_cleanup_fb(struct drm_plane *plane,
799 				 struct drm_plane_state *old_state)
800 {
801 	struct drm_gem_object *obj;
802 	struct qxl_bo *user_bo;
803 
804 	if (!old_state->fb) {
805 		/*
806 		 * we never executed prepare_fb, so there's nothing to
807 		 * unpin.
808 		 */
809 		return;
810 	}
811 
812 	obj = to_qxl_framebuffer(old_state->fb)->obj;
813 	user_bo = gem_to_qxl_bo(obj);
814 	qxl_bo_unpin(user_bo);
815 
816 	if (user_bo->shadow && !user_bo->is_primary) {
817 		drm_gem_object_put_unlocked(&user_bo->shadow->gem_base);
818 		user_bo->shadow = NULL;
819 	}
820 }
821 
822 static const uint32_t qxl_cursor_plane_formats[] = {
823 	DRM_FORMAT_ARGB8888,
824 };
825 
826 static const struct drm_plane_helper_funcs qxl_cursor_helper_funcs = {
827 	.atomic_check = qxl_plane_atomic_check,
828 	.atomic_update = qxl_cursor_atomic_update,
829 	.atomic_disable = qxl_cursor_atomic_disable,
830 	.prepare_fb = qxl_plane_prepare_fb,
831 	.cleanup_fb = qxl_plane_cleanup_fb,
832 };
833 
834 static const struct drm_plane_funcs qxl_cursor_plane_funcs = {
835 	.update_plane	= drm_atomic_helper_update_plane,
836 	.disable_plane	= drm_atomic_helper_disable_plane,
837 	.destroy	= drm_primary_helper_destroy,
838 	.reset		= drm_atomic_helper_plane_reset,
839 	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
840 	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
841 };
842 
843 static const uint32_t qxl_primary_plane_formats[] = {
844 	DRM_FORMAT_XRGB8888,
845 	DRM_FORMAT_ARGB8888,
846 };
847 
848 static const struct drm_plane_helper_funcs primary_helper_funcs = {
849 	.atomic_check = qxl_primary_atomic_check,
850 	.atomic_update = qxl_primary_atomic_update,
851 	.atomic_disable = qxl_primary_atomic_disable,
852 	.prepare_fb = qxl_plane_prepare_fb,
853 	.cleanup_fb = qxl_plane_cleanup_fb,
854 };
855 
856 static const struct drm_plane_funcs qxl_primary_plane_funcs = {
857 	.update_plane	= drm_atomic_helper_update_plane,
858 	.disable_plane	= drm_atomic_helper_disable_plane,
859 	.destroy	= drm_primary_helper_destroy,
860 	.reset		= drm_atomic_helper_plane_reset,
861 	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
862 	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
863 };
864 
865 static struct drm_plane *qxl_create_plane(struct qxl_device *qdev,
866 					  unsigned int possible_crtcs,
867 					  enum drm_plane_type type)
868 {
869 	const struct drm_plane_helper_funcs *helper_funcs = NULL;
870 	struct drm_plane *plane;
871 	const struct drm_plane_funcs *funcs;
872 	const uint32_t *formats;
873 	int num_formats;
874 	int err;
875 
876 	if (type == DRM_PLANE_TYPE_PRIMARY) {
877 		funcs = &qxl_primary_plane_funcs;
878 		formats = qxl_primary_plane_formats;
879 		num_formats = ARRAY_SIZE(qxl_primary_plane_formats);
880 		helper_funcs = &primary_helper_funcs;
881 	} else if (type == DRM_PLANE_TYPE_CURSOR) {
882 		funcs = &qxl_cursor_plane_funcs;
883 		formats = qxl_cursor_plane_formats;
884 		helper_funcs = &qxl_cursor_helper_funcs;
885 		num_formats = ARRAY_SIZE(qxl_cursor_plane_formats);
886 	} else {
887 		return ERR_PTR(-EINVAL);
888 	}
889 
890 	plane = kzalloc(sizeof(*plane), GFP_KERNEL);
891 	if (!plane)
892 		return ERR_PTR(-ENOMEM);
893 
894 	err = drm_universal_plane_init(&qdev->ddev, plane, possible_crtcs,
895 				       funcs, formats, num_formats,
896 				       NULL, type, NULL);
897 	if (err)
898 		goto free_plane;
899 
900 	drm_plane_helper_add(plane, helper_funcs);
901 
902 	return plane;
903 
904 free_plane:
905 	kfree(plane);
906 	return ERR_PTR(-EINVAL);
907 }
908 
909 static int qdev_crtc_init(struct drm_device *dev, int crtc_id)
910 {
911 	struct qxl_crtc *qxl_crtc;
912 	struct drm_plane *primary, *cursor;
913 	struct qxl_device *qdev = dev->dev_private;
914 	int r;
915 
916 	qxl_crtc = kzalloc(sizeof(struct qxl_crtc), GFP_KERNEL);
917 	if (!qxl_crtc)
918 		return -ENOMEM;
919 
920 	primary = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_PRIMARY);
921 	if (IS_ERR(primary)) {
922 		r = -ENOMEM;
923 		goto free_mem;
924 	}
925 
926 	cursor = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_CURSOR);
927 	if (IS_ERR(cursor)) {
928 		r = -ENOMEM;
929 		goto clean_primary;
930 	}
931 
932 	r = drm_crtc_init_with_planes(dev, &qxl_crtc->base, primary, cursor,
933 				      &qxl_crtc_funcs, NULL);
934 	if (r)
935 		goto clean_cursor;
936 
937 	qxl_crtc->index = crtc_id;
938 	drm_crtc_helper_add(&qxl_crtc->base, &qxl_crtc_helper_funcs);
939 	return 0;
940 
941 clean_cursor:
942 	drm_plane_cleanup(cursor);
943 	kfree(cursor);
944 clean_primary:
945 	drm_plane_cleanup(primary);
946 	kfree(primary);
947 free_mem:
948 	kfree(qxl_crtc);
949 	return r;
950 }
951 
952 static void qxl_enc_dpms(struct drm_encoder *encoder, int mode)
953 {
954 	DRM_DEBUG("\n");
955 }
956 
957 static void qxl_enc_prepare(struct drm_encoder *encoder)
958 {
959 	DRM_DEBUG("\n");
960 }
961 
962 static void qxl_write_monitors_config_for_encoder(struct qxl_device *qdev,
963 		struct drm_encoder *encoder)
964 {
965 	int i;
966 	struct qxl_output *output = drm_encoder_to_qxl_output(encoder);
967 	struct qxl_head *head;
968 	struct drm_display_mode *mode;
969 
970 	BUG_ON(!encoder);
971 	/* TODO: ugly, do better */
972 	i = output->index;
973 	if (!qdev->monitors_config ||
974 	    qdev->monitors_config->max_allowed <= i) {
975 		DRM_ERROR(
976 		"head number too large or missing monitors config: %p, %d",
977 		qdev->monitors_config,
978 		qdev->monitors_config ?
979 			qdev->monitors_config->max_allowed : -1);
980 		return;
981 	}
982 	if (!encoder->crtc) {
983 		DRM_ERROR("missing crtc on encoder %p\n", encoder);
984 		return;
985 	}
986 	if (i != 0)
987 		DRM_DEBUG("missing for multiple monitors: no head holes\n");
988 	head = &qdev->monitors_config->heads[i];
989 	head->id = i;
990 	if (encoder->crtc->enabled) {
991 		mode = &encoder->crtc->mode;
992 		head->width = mode->hdisplay;
993 		head->height = mode->vdisplay;
994 		head->x = encoder->crtc->x;
995 		head->y = encoder->crtc->y;
996 		if (qdev->monitors_config->count < i + 1)
997 			qdev->monitors_config->count = i + 1;
998 	} else {
999 		head->width = 0;
1000 		head->height = 0;
1001 		head->x = 0;
1002 		head->y = 0;
1003 	}
1004 	DRM_DEBUG_KMS("setting head %d to +%d+%d %dx%d out of %d\n",
1005 		      i, head->x, head->y, head->width, head->height, qdev->monitors_config->count);
1006 	head->flags = 0;
1007 	/* TODO - somewhere else to call this for multiple monitors
1008 	 * (config_commit?) */
1009 	qxl_send_monitors_config(qdev);
1010 }
1011 
1012 static void qxl_enc_commit(struct drm_encoder *encoder)
1013 {
1014 	struct qxl_device *qdev = encoder->dev->dev_private;
1015 
1016 	qxl_write_monitors_config_for_encoder(qdev, encoder);
1017 	DRM_DEBUG("\n");
1018 }
1019 
1020 static void qxl_enc_mode_set(struct drm_encoder *encoder,
1021 				struct drm_display_mode *mode,
1022 				struct drm_display_mode *adjusted_mode)
1023 {
1024 	DRM_DEBUG("\n");
1025 }
1026 
1027 static int qxl_conn_get_modes(struct drm_connector *connector)
1028 {
1029 	unsigned pwidth = 1024;
1030 	unsigned pheight = 768;
1031 	int ret = 0;
1032 
1033 	ret = qxl_add_monitors_config_modes(connector, &pwidth, &pheight);
1034 	if (ret < 0)
1035 		return ret;
1036 	ret += qxl_add_common_modes(connector, pwidth, pheight);
1037 	return ret;
1038 }
1039 
1040 static int qxl_conn_mode_valid(struct drm_connector *connector,
1041 			       struct drm_display_mode *mode)
1042 {
1043 	struct drm_device *ddev = connector->dev;
1044 	struct qxl_device *qdev = ddev->dev_private;
1045 	int i;
1046 
1047 	/* TODO: is this called for user defined modes? (xrandr --add-mode)
1048 	 * TODO: check that the mode fits in the framebuffer */
1049 
1050 	if(qdev->monitors_config_width == mode->hdisplay &&
1051 	   qdev->monitors_config_height == mode->vdisplay)
1052 		return MODE_OK;
1053 
1054 	for (i = 0; i < ARRAY_SIZE(common_modes); i++) {
1055 		if (common_modes[i].w == mode->hdisplay && common_modes[i].h == mode->vdisplay)
1056 			return MODE_OK;
1057 	}
1058 	return MODE_BAD;
1059 }
1060 
1061 static struct drm_encoder *qxl_best_encoder(struct drm_connector *connector)
1062 {
1063 	struct qxl_output *qxl_output =
1064 		drm_connector_to_qxl_output(connector);
1065 
1066 	DRM_DEBUG("\n");
1067 	return &qxl_output->enc;
1068 }
1069 
1070 
1071 static const struct drm_encoder_helper_funcs qxl_enc_helper_funcs = {
1072 	.dpms = qxl_enc_dpms,
1073 	.prepare = qxl_enc_prepare,
1074 	.mode_set = qxl_enc_mode_set,
1075 	.commit = qxl_enc_commit,
1076 };
1077 
1078 static const struct drm_connector_helper_funcs qxl_connector_helper_funcs = {
1079 	.get_modes = qxl_conn_get_modes,
1080 	.mode_valid = qxl_conn_mode_valid,
1081 	.best_encoder = qxl_best_encoder,
1082 };
1083 
1084 static enum drm_connector_status qxl_conn_detect(
1085 			struct drm_connector *connector,
1086 			bool force)
1087 {
1088 	struct qxl_output *output =
1089 		drm_connector_to_qxl_output(connector);
1090 	struct drm_device *ddev = connector->dev;
1091 	struct qxl_device *qdev = ddev->dev_private;
1092 	bool connected = false;
1093 
1094 	/* The first monitor is always connected */
1095 	if (!qdev->client_monitors_config) {
1096 		if (output->index == 0)
1097 			connected = true;
1098 	} else
1099 		connected = qdev->client_monitors_config->count > output->index &&
1100 		     qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]);
1101 
1102 	DRM_DEBUG("#%d connected: %d\n", output->index, connected);
1103 	if (!connected)
1104 		qxl_monitors_config_set(qdev, output->index, 0, 0, 0, 0, 0);
1105 
1106 	return connected ? connector_status_connected
1107 			 : connector_status_disconnected;
1108 }
1109 
1110 static int qxl_conn_set_property(struct drm_connector *connector,
1111 				   struct drm_property *property,
1112 				   uint64_t value)
1113 {
1114 	DRM_DEBUG("\n");
1115 	return 0;
1116 }
1117 
1118 static void qxl_conn_destroy(struct drm_connector *connector)
1119 {
1120 	struct qxl_output *qxl_output =
1121 		drm_connector_to_qxl_output(connector);
1122 
1123 	drm_connector_unregister(connector);
1124 	drm_connector_cleanup(connector);
1125 	kfree(qxl_output);
1126 }
1127 
1128 static const struct drm_connector_funcs qxl_connector_funcs = {
1129 	.dpms = drm_helper_connector_dpms,
1130 	.detect = qxl_conn_detect,
1131 	.fill_modes = drm_helper_probe_single_connector_modes,
1132 	.set_property = qxl_conn_set_property,
1133 	.destroy = qxl_conn_destroy,
1134 	.reset = drm_atomic_helper_connector_reset,
1135 	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1136 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1137 };
1138 
1139 static void qxl_enc_destroy(struct drm_encoder *encoder)
1140 {
1141 	drm_encoder_cleanup(encoder);
1142 }
1143 
1144 static const struct drm_encoder_funcs qxl_enc_funcs = {
1145 	.destroy = qxl_enc_destroy,
1146 };
1147 
1148 static int qxl_mode_create_hotplug_mode_update_property(struct qxl_device *qdev)
1149 {
1150 	if (qdev->hotplug_mode_update_property)
1151 		return 0;
1152 
1153 	qdev->hotplug_mode_update_property =
1154 		drm_property_create_range(&qdev->ddev, DRM_MODE_PROP_IMMUTABLE,
1155 					  "hotplug_mode_update", 0, 1);
1156 
1157 	return 0;
1158 }
1159 
1160 static int qdev_output_init(struct drm_device *dev, int num_output)
1161 {
1162 	struct qxl_device *qdev = dev->dev_private;
1163 	struct qxl_output *qxl_output;
1164 	struct drm_connector *connector;
1165 	struct drm_encoder *encoder;
1166 
1167 	qxl_output = kzalloc(sizeof(struct qxl_output), GFP_KERNEL);
1168 	if (!qxl_output)
1169 		return -ENOMEM;
1170 
1171 	qxl_output->index = num_output;
1172 
1173 	connector = &qxl_output->base;
1174 	encoder = &qxl_output->enc;
1175 	drm_connector_init(dev, &qxl_output->base,
1176 			   &qxl_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL);
1177 
1178 	drm_encoder_init(dev, &qxl_output->enc, &qxl_enc_funcs,
1179 			 DRM_MODE_ENCODER_VIRTUAL, NULL);
1180 
1181 	/* we get HPD via client monitors config */
1182 	connector->polled = DRM_CONNECTOR_POLL_HPD;
1183 	encoder->possible_crtcs = 1 << num_output;
1184 	drm_mode_connector_attach_encoder(&qxl_output->base,
1185 					  &qxl_output->enc);
1186 	drm_encoder_helper_add(encoder, &qxl_enc_helper_funcs);
1187 	drm_connector_helper_add(connector, &qxl_connector_helper_funcs);
1188 
1189 	drm_object_attach_property(&connector->base,
1190 				   qdev->hotplug_mode_update_property, 0);
1191 	drm_object_attach_property(&connector->base,
1192 				   dev->mode_config.suggested_x_property, 0);
1193 	drm_object_attach_property(&connector->base,
1194 				   dev->mode_config.suggested_y_property, 0);
1195 	return 0;
1196 }
1197 
1198 static struct drm_framebuffer *
1199 qxl_user_framebuffer_create(struct drm_device *dev,
1200 			    struct drm_file *file_priv,
1201 			    const struct drm_mode_fb_cmd2 *mode_cmd)
1202 {
1203 	struct drm_gem_object *obj;
1204 	struct qxl_framebuffer *qxl_fb;
1205 	int ret;
1206 
1207 	obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
1208 	if (!obj)
1209 		return NULL;
1210 
1211 	qxl_fb = kzalloc(sizeof(*qxl_fb), GFP_KERNEL);
1212 	if (qxl_fb == NULL)
1213 		return NULL;
1214 
1215 	ret = qxl_framebuffer_init(dev, qxl_fb, mode_cmd, obj, &qxl_fb_funcs);
1216 	if (ret) {
1217 		kfree(qxl_fb);
1218 		drm_gem_object_unreference_unlocked(obj);
1219 		return NULL;
1220 	}
1221 
1222 	return &qxl_fb->base;
1223 }
1224 
1225 static const struct drm_mode_config_funcs qxl_mode_funcs = {
1226 	.fb_create = qxl_user_framebuffer_create,
1227 	.atomic_check = drm_atomic_helper_check,
1228 	.atomic_commit = drm_atomic_helper_commit,
1229 };
1230 
1231 int qxl_create_monitors_object(struct qxl_device *qdev)
1232 {
1233 	int ret;
1234 	struct drm_gem_object *gobj;
1235 	int max_allowed = qxl_num_crtc;
1236 	int monitors_config_size = sizeof(struct qxl_monitors_config) +
1237 		max_allowed * sizeof(struct qxl_head);
1238 
1239 	ret = qxl_gem_object_create(qdev, monitors_config_size, 0,
1240 				    QXL_GEM_DOMAIN_VRAM,
1241 				    false, false, NULL, &gobj);
1242 	if (ret) {
1243 		DRM_ERROR("%s: failed to create gem ret=%d\n", __func__, ret);
1244 		return -ENOMEM;
1245 	}
1246 	qdev->monitors_config_bo = gem_to_qxl_bo(gobj);
1247 
1248 	ret = qxl_bo_pin(qdev->monitors_config_bo, QXL_GEM_DOMAIN_VRAM, NULL);
1249 	if (ret)
1250 		return ret;
1251 
1252 	qxl_bo_kmap(qdev->monitors_config_bo, NULL);
1253 
1254 	qdev->monitors_config = qdev->monitors_config_bo->kptr;
1255 	qdev->ram_header->monitors_config =
1256 		qxl_bo_physical_address(qdev, qdev->monitors_config_bo, 0);
1257 
1258 	memset(qdev->monitors_config, 0, monitors_config_size);
1259 	qdev->monitors_config->max_allowed = max_allowed;
1260 	return 0;
1261 }
1262 
1263 int qxl_destroy_monitors_object(struct qxl_device *qdev)
1264 {
1265 	int ret;
1266 
1267 	qdev->monitors_config = NULL;
1268 	qdev->ram_header->monitors_config = 0;
1269 
1270 	qxl_bo_kunmap(qdev->monitors_config_bo);
1271 	ret = qxl_bo_unpin(qdev->monitors_config_bo);
1272 	if (ret)
1273 		return ret;
1274 
1275 	qxl_bo_unref(&qdev->monitors_config_bo);
1276 	return 0;
1277 }
1278 
1279 int qxl_modeset_init(struct qxl_device *qdev)
1280 {
1281 	int i;
1282 	int ret;
1283 
1284 	drm_mode_config_init(&qdev->ddev);
1285 
1286 	ret = qxl_create_monitors_object(qdev);
1287 	if (ret)
1288 		return ret;
1289 
1290 	qdev->ddev.mode_config.funcs = (void *)&qxl_mode_funcs;
1291 
1292 	/* modes will be validated against the framebuffer size */
1293 	qdev->ddev.mode_config.min_width = 0;
1294 	qdev->ddev.mode_config.min_height = 0;
1295 	qdev->ddev.mode_config.max_width = 8192;
1296 	qdev->ddev.mode_config.max_height = 8192;
1297 
1298 	qdev->ddev.mode_config.fb_base = qdev->vram_base;
1299 
1300 	drm_mode_create_suggested_offset_properties(&qdev->ddev);
1301 	qxl_mode_create_hotplug_mode_update_property(qdev);
1302 
1303 	for (i = 0 ; i < qxl_num_crtc; ++i) {
1304 		qdev_crtc_init(&qdev->ddev, i);
1305 		qdev_output_init(&qdev->ddev, i);
1306 	}
1307 
1308 	qxl_display_read_client_monitors_config(qdev);
1309 	qdev->mode_info.mode_config_initialized = true;
1310 
1311 	drm_mode_config_reset(&qdev->ddev);
1312 
1313 	/* primary surface must be created by this point, to allow
1314 	 * issuing command queue commands and having them read by
1315 	 * spice server. */
1316 	qxl_fbdev_init(qdev);
1317 	return 0;
1318 }
1319 
1320 void qxl_modeset_fini(struct qxl_device *qdev)
1321 {
1322 	qxl_fbdev_fini(qdev);
1323 
1324 	qxl_destroy_monitors_object(qdev);
1325 	if (qdev->mode_info.mode_config_initialized) {
1326 		drm_mode_config_cleanup(&qdev->ddev);
1327 		qdev->mode_info.mode_config_initialized = false;
1328 	}
1329 }
1330