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 <linux/delay.h>
28 #include <linux/iosys-map.h>
29 
30 #include <drm/drm_drv.h>
31 #include <drm/drm_atomic.h>
32 #include <drm/drm_atomic_helper.h>
33 #include <drm/drm_edid.h>
34 #include <drm/drm_framebuffer.h>
35 #include <drm/drm_gem_framebuffer_helper.h>
36 #include <drm/drm_plane_helper.h>
37 #include <drm/drm_probe_helper.h>
38 #include <drm/drm_simple_kms_helper.h>
39 #include <drm/drm_gem_atomic_helper.h>
40 
41 #include "qxl_drv.h"
42 #include "qxl_object.h"
43 
qxl_head_enabled(struct qxl_head * head)44 static bool qxl_head_enabled(struct qxl_head *head)
45 {
46 	return head->width && head->height;
47 }
48 
qxl_alloc_client_monitors_config(struct qxl_device * qdev,unsigned int count)49 static int qxl_alloc_client_monitors_config(struct qxl_device *qdev,
50 		unsigned int count)
51 {
52 	if (qdev->client_monitors_config &&
53 	    count > qdev->client_monitors_config->count) {
54 		kfree(qdev->client_monitors_config);
55 		qdev->client_monitors_config = NULL;
56 	}
57 	if (!qdev->client_monitors_config) {
58 		qdev->client_monitors_config = kzalloc(
59 				struct_size(qdev->client_monitors_config,
60 				heads, count), GFP_KERNEL);
61 		if (!qdev->client_monitors_config)
62 			return -ENOMEM;
63 	}
64 	qdev->client_monitors_config->count = count;
65 	return 0;
66 }
67 
68 enum {
69 	MONITORS_CONFIG_MODIFIED,
70 	MONITORS_CONFIG_UNCHANGED,
71 	MONITORS_CONFIG_BAD_CRC,
72 	MONITORS_CONFIG_ERROR,
73 };
74 
qxl_display_copy_rom_client_monitors_config(struct qxl_device * qdev)75 static int qxl_display_copy_rom_client_monitors_config(struct qxl_device *qdev)
76 {
77 	int i;
78 	int num_monitors;
79 	uint32_t crc;
80 	int status = MONITORS_CONFIG_UNCHANGED;
81 
82 	num_monitors = qdev->rom->client_monitors_config.count;
83 	crc = crc32(0, (const uint8_t *)&qdev->rom->client_monitors_config,
84 		  sizeof(qdev->rom->client_monitors_config));
85 	if (crc != qdev->rom->client_monitors_config_crc)
86 		return MONITORS_CONFIG_BAD_CRC;
87 	if (!num_monitors) {
88 		DRM_DEBUG_KMS("no client monitors configured\n");
89 		return status;
90 	}
91 	if (num_monitors > qxl_num_crtc) {
92 		DRM_DEBUG_KMS("client monitors list will be truncated: %d < %d\n",
93 			      qxl_num_crtc, num_monitors);
94 		num_monitors = qxl_num_crtc;
95 	} else {
96 		num_monitors = qdev->rom->client_monitors_config.count;
97 	}
98 	if (qdev->client_monitors_config
99 	      && (num_monitors != qdev->client_monitors_config->count)) {
100 		status = MONITORS_CONFIG_MODIFIED;
101 	}
102 	if (qxl_alloc_client_monitors_config(qdev, num_monitors)) {
103 		status = MONITORS_CONFIG_ERROR;
104 		return status;
105 	}
106 	/* we copy max from the client but it isn't used */
107 	qdev->client_monitors_config->max_allowed = qxl_num_crtc;
108 	for (i = 0 ; i < qdev->client_monitors_config->count ; ++i) {
109 		struct qxl_urect *c_rect =
110 			&qdev->rom->client_monitors_config.heads[i];
111 		struct qxl_head *client_head =
112 			&qdev->client_monitors_config->heads[i];
113 		if (client_head->x != c_rect->left) {
114 			client_head->x = c_rect->left;
115 			status = MONITORS_CONFIG_MODIFIED;
116 		}
117 		if (client_head->y != c_rect->top) {
118 			client_head->y = c_rect->top;
119 			status = MONITORS_CONFIG_MODIFIED;
120 		}
121 		if (client_head->width != c_rect->right - c_rect->left) {
122 			client_head->width = c_rect->right - c_rect->left;
123 			status = MONITORS_CONFIG_MODIFIED;
124 		}
125 		if (client_head->height != c_rect->bottom - c_rect->top) {
126 			client_head->height = c_rect->bottom - c_rect->top;
127 			status = MONITORS_CONFIG_MODIFIED;
128 		}
129 		if (client_head->surface_id != 0) {
130 			client_head->surface_id = 0;
131 			status = MONITORS_CONFIG_MODIFIED;
132 		}
133 		if (client_head->id != i) {
134 			client_head->id = i;
135 			status = MONITORS_CONFIG_MODIFIED;
136 		}
137 		if (client_head->flags != 0) {
138 			client_head->flags = 0;
139 			status = MONITORS_CONFIG_MODIFIED;
140 		}
141 		DRM_DEBUG_KMS("read %dx%d+%d+%d\n", client_head->width, client_head->height,
142 			  client_head->x, client_head->y);
143 	}
144 
145 	return status;
146 }
147 
qxl_update_offset_props(struct qxl_device * qdev)148 static void qxl_update_offset_props(struct qxl_device *qdev)
149 {
150 	struct drm_device *dev = &qdev->ddev;
151 	struct drm_connector *connector;
152 	struct qxl_output *output;
153 	struct qxl_head *head;
154 
155 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
156 		output = drm_connector_to_qxl_output(connector);
157 
158 		head = &qdev->client_monitors_config->heads[output->index];
159 
160 		drm_object_property_set_value(&connector->base,
161 			dev->mode_config.suggested_x_property, head->x);
162 		drm_object_property_set_value(&connector->base,
163 			dev->mode_config.suggested_y_property, head->y);
164 	}
165 }
166 
qxl_display_read_client_monitors_config(struct qxl_device * qdev)167 void qxl_display_read_client_monitors_config(struct qxl_device *qdev)
168 {
169 	struct drm_device *dev = &qdev->ddev;
170 	struct drm_modeset_acquire_ctx ctx;
171 	int status, retries, ret;
172 
173 	for (retries = 0; retries < 10; retries++) {
174 		status = qxl_display_copy_rom_client_monitors_config(qdev);
175 		if (status != MONITORS_CONFIG_BAD_CRC)
176 			break;
177 		udelay(5);
178 	}
179 	if (status == MONITORS_CONFIG_ERROR) {
180 		DRM_DEBUG_KMS("ignoring client monitors config: error");
181 		return;
182 	}
183 	if (status == MONITORS_CONFIG_BAD_CRC) {
184 		DRM_DEBUG_KMS("ignoring client monitors config: bad crc");
185 		return;
186 	}
187 	if (status == MONITORS_CONFIG_UNCHANGED) {
188 		DRM_DEBUG_KMS("ignoring client monitors config: unchanged");
189 		return;
190 	}
191 
192 	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
193 	qxl_update_offset_props(qdev);
194 	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
195 	if (!drm_helper_hpd_irq_event(dev)) {
196 		/* notify that the monitor configuration changed, to
197 		   adjust at the arbitrary resolution */
198 		drm_kms_helper_hotplug_event(dev);
199 	}
200 }
201 
qxl_check_mode(struct qxl_device * qdev,unsigned int width,unsigned int height)202 static int qxl_check_mode(struct qxl_device *qdev,
203 			  unsigned int width,
204 			  unsigned int height)
205 {
206 	unsigned int stride;
207 	unsigned int size;
208 
209 	if (check_mul_overflow(width, 4u, &stride))
210 		return -EINVAL;
211 	if (check_mul_overflow(stride, height, &size))
212 		return -EINVAL;
213 	if (size > qdev->vram_size)
214 		return -ENOMEM;
215 	return 0;
216 }
217 
qxl_check_framebuffer(struct qxl_device * qdev,struct qxl_bo * bo)218 static int qxl_check_framebuffer(struct qxl_device *qdev,
219 				 struct qxl_bo *bo)
220 {
221 	return qxl_check_mode(qdev, bo->surf.width, bo->surf.height);
222 }
223 
qxl_add_mode(struct drm_connector * connector,unsigned int width,unsigned int height,bool preferred)224 static int qxl_add_mode(struct drm_connector *connector,
225 			unsigned int width,
226 			unsigned int height,
227 			bool preferred)
228 {
229 	struct drm_device *dev = connector->dev;
230 	struct qxl_device *qdev = to_qxl(dev);
231 	struct drm_display_mode *mode = NULL;
232 	int rc;
233 
234 	rc = qxl_check_mode(qdev, width, height);
235 	if (rc != 0)
236 		return 0;
237 
238 	mode = drm_cvt_mode(dev, width, height, 60, false, false, false);
239 	if (preferred)
240 		mode->type |= DRM_MODE_TYPE_PREFERRED;
241 	mode->hdisplay = width;
242 	mode->vdisplay = height;
243 	drm_mode_set_name(mode);
244 	drm_mode_probed_add(connector, mode);
245 	return 1;
246 }
247 
qxl_add_monitors_config_modes(struct drm_connector * connector)248 static int qxl_add_monitors_config_modes(struct drm_connector *connector)
249 {
250 	struct drm_device *dev = connector->dev;
251 	struct qxl_device *qdev = to_qxl(dev);
252 	struct qxl_output *output = drm_connector_to_qxl_output(connector);
253 	int h = output->index;
254 	struct qxl_head *head;
255 
256 	if (!qdev->monitors_config)
257 		return 0;
258 	if (h >= qxl_num_crtc)
259 		return 0;
260 	if (!qdev->client_monitors_config)
261 		return 0;
262 	if (h >= qdev->client_monitors_config->count)
263 		return 0;
264 
265 	head = &qdev->client_monitors_config->heads[h];
266 	DRM_DEBUG_KMS("head %d is %dx%d\n", h, head->width, head->height);
267 
268 	return qxl_add_mode(connector, head->width, head->height, true);
269 }
270 
271 static struct mode_size {
272 	int w;
273 	int h;
274 } extra_modes[] = {
275 	{ 720,  480},
276 	{1152,  768},
277 	{1280,  854},
278 };
279 
qxl_add_extra_modes(struct drm_connector * connector)280 static int qxl_add_extra_modes(struct drm_connector *connector)
281 {
282 	int i, ret = 0;
283 
284 	for (i = 0; i < ARRAY_SIZE(extra_modes); i++)
285 		ret += qxl_add_mode(connector,
286 				    extra_modes[i].w,
287 				    extra_modes[i].h,
288 				    false);
289 	return ret;
290 }
291 
qxl_send_monitors_config(struct qxl_device * qdev)292 static void qxl_send_monitors_config(struct qxl_device *qdev)
293 {
294 	int i;
295 
296 	BUG_ON(!qdev->ram_header->monitors_config);
297 
298 	if (qdev->monitors_config->count == 0)
299 		return;
300 
301 	for (i = 0 ; i < qdev->monitors_config->count ; ++i) {
302 		struct qxl_head *head = &qdev->monitors_config->heads[i];
303 
304 		if (head->y > 8192 || head->x > 8192 ||
305 		    head->width > 8192 || head->height > 8192) {
306 			DRM_ERROR("head %d wrong: %dx%d+%d+%d\n",
307 				  i, head->width, head->height,
308 				  head->x, head->y);
309 			return;
310 		}
311 	}
312 	qxl_io_monitors_config(qdev);
313 }
314 
qxl_crtc_update_monitors_config(struct drm_crtc * crtc,const char * reason)315 static void qxl_crtc_update_monitors_config(struct drm_crtc *crtc,
316 					    const char *reason)
317 {
318 	struct drm_device *dev = crtc->dev;
319 	struct qxl_device *qdev = to_qxl(dev);
320 	struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
321 	struct qxl_head head;
322 	int oldcount, i = qcrtc->index;
323 
324 	if (!qdev->primary_bo) {
325 		DRM_DEBUG_KMS("no primary surface, skip (%s)\n", reason);
326 		return;
327 	}
328 
329 	if (!qdev->monitors_config || qxl_num_crtc <= i)
330 		return;
331 
332 	head.id = i;
333 	head.flags = 0;
334 	head.surface_id = 0;
335 	oldcount = qdev->monitors_config->count;
336 	if (crtc->state->active) {
337 		struct drm_display_mode *mode = &crtc->mode;
338 
339 		head.width = mode->hdisplay;
340 		head.height = mode->vdisplay;
341 		head.x = crtc->x;
342 		head.y = crtc->y;
343 		if (qdev->monitors_config->count < i + 1)
344 			qdev->monitors_config->count = i + 1;
345 		if (qdev->primary_bo == qdev->dumb_shadow_bo)
346 			head.x += qdev->dumb_heads[i].x;
347 	} else if (i > 0) {
348 		head.width = 0;
349 		head.height = 0;
350 		head.x = 0;
351 		head.y = 0;
352 		if (qdev->monitors_config->count == i + 1)
353 			qdev->monitors_config->count = i;
354 	} else {
355 		DRM_DEBUG_KMS("inactive head 0, skip (%s)\n", reason);
356 		return;
357 	}
358 
359 	if (head.width  == qdev->monitors_config->heads[i].width  &&
360 	    head.height == qdev->monitors_config->heads[i].height &&
361 	    head.x      == qdev->monitors_config->heads[i].x      &&
362 	    head.y      == qdev->monitors_config->heads[i].y      &&
363 	    oldcount    == qdev->monitors_config->count)
364 		return;
365 
366 	DRM_DEBUG_KMS("head %d, %dx%d, at +%d+%d, %s (%s)\n",
367 		      i, head.width, head.height, head.x, head.y,
368 		      crtc->state->active ? "on" : "off", reason);
369 	if (oldcount != qdev->monitors_config->count)
370 		DRM_DEBUG_KMS("active heads %d -> %d (%d total)\n",
371 			      oldcount, qdev->monitors_config->count,
372 			      qxl_num_crtc);
373 
374 	qdev->monitors_config->heads[i] = head;
375 	qdev->monitors_config->max_allowed = qxl_num_crtc;
376 	qxl_send_monitors_config(qdev);
377 }
378 
qxl_crtc_atomic_flush(struct drm_crtc * crtc,struct drm_atomic_state * state)379 static void qxl_crtc_atomic_flush(struct drm_crtc *crtc,
380 				  struct drm_atomic_state *state)
381 {
382 	qxl_crtc_update_monitors_config(crtc, "flush");
383 }
384 
qxl_crtc_destroy(struct drm_crtc * crtc)385 static void qxl_crtc_destroy(struct drm_crtc *crtc)
386 {
387 	struct qxl_crtc *qxl_crtc = to_qxl_crtc(crtc);
388 
389 	qxl_bo_unref(&qxl_crtc->cursor_bo);
390 	drm_crtc_cleanup(crtc);
391 	kfree(qxl_crtc);
392 }
393 
394 static const struct drm_crtc_funcs qxl_crtc_funcs = {
395 	.set_config = drm_atomic_helper_set_config,
396 	.destroy = qxl_crtc_destroy,
397 	.page_flip = drm_atomic_helper_page_flip,
398 	.reset = drm_atomic_helper_crtc_reset,
399 	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
400 	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
401 };
402 
qxl_framebuffer_surface_dirty(struct drm_framebuffer * fb,struct drm_file * file_priv,unsigned int flags,unsigned int color,struct drm_clip_rect * clips,unsigned int num_clips)403 static int qxl_framebuffer_surface_dirty(struct drm_framebuffer *fb,
404 					 struct drm_file *file_priv,
405 					 unsigned int flags, unsigned int color,
406 					 struct drm_clip_rect *clips,
407 					 unsigned int num_clips)
408 {
409 	/* TODO: vmwgfx where this was cribbed from had locking. Why? */
410 	struct qxl_device *qdev = to_qxl(fb->dev);
411 	struct drm_clip_rect norect;
412 	struct qxl_bo *qobj;
413 	struct drm_modeset_acquire_ctx ctx;
414 	bool is_primary;
415 	int inc = 1, ret;
416 
417 	DRM_MODESET_LOCK_ALL_BEGIN(fb->dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
418 
419 	qobj = gem_to_qxl_bo(fb->obj[0]);
420 	/* if we aren't primary surface ignore this */
421 	is_primary = qobj->shadow ? qobj->shadow->is_primary : qobj->is_primary;
422 	if (!is_primary)
423 		goto out_lock_end;
424 
425 	if (!num_clips) {
426 		num_clips = 1;
427 		clips = &norect;
428 		norect.x1 = norect.y1 = 0;
429 		norect.x2 = fb->width;
430 		norect.y2 = fb->height;
431 	} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
432 		num_clips /= 2;
433 		inc = 2; /* skip source rects */
434 	}
435 
436 	qxl_draw_dirty_fb(qdev, fb, qobj, flags, color,
437 			  clips, num_clips, inc, 0);
438 
439 out_lock_end:
440 	DRM_MODESET_LOCK_ALL_END(fb->dev, ctx, ret);
441 
442 	return 0;
443 }
444 
445 static const struct drm_framebuffer_funcs qxl_fb_funcs = {
446 	.destroy = drm_gem_fb_destroy,
447 	.dirty = qxl_framebuffer_surface_dirty,
448 	.create_handle = drm_gem_fb_create_handle,
449 };
450 
qxl_crtc_atomic_enable(struct drm_crtc * crtc,struct drm_atomic_state * state)451 static void qxl_crtc_atomic_enable(struct drm_crtc *crtc,
452 				   struct drm_atomic_state *state)
453 {
454 	qxl_crtc_update_monitors_config(crtc, "enable");
455 }
456 
qxl_crtc_atomic_disable(struct drm_crtc * crtc,struct drm_atomic_state * state)457 static void qxl_crtc_atomic_disable(struct drm_crtc *crtc,
458 				    struct drm_atomic_state *state)
459 {
460 	qxl_crtc_update_monitors_config(crtc, "disable");
461 }
462 
463 static const struct drm_crtc_helper_funcs qxl_crtc_helper_funcs = {
464 	.atomic_flush = qxl_crtc_atomic_flush,
465 	.atomic_enable = qxl_crtc_atomic_enable,
466 	.atomic_disable = qxl_crtc_atomic_disable,
467 };
468 
qxl_primary_atomic_check(struct drm_plane * plane,struct drm_atomic_state * state)469 static int qxl_primary_atomic_check(struct drm_plane *plane,
470 				    struct drm_atomic_state *state)
471 {
472 	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
473 										 plane);
474 	struct qxl_device *qdev = to_qxl(plane->dev);
475 	struct qxl_bo *bo;
476 
477 	if (!new_plane_state->crtc || !new_plane_state->fb)
478 		return 0;
479 
480 	bo = gem_to_qxl_bo(new_plane_state->fb->obj[0]);
481 
482 	return qxl_check_framebuffer(qdev, bo);
483 }
484 
qxl_primary_apply_cursor(struct qxl_device * qdev,struct drm_plane_state * plane_state)485 static int qxl_primary_apply_cursor(struct qxl_device *qdev,
486 				    struct drm_plane_state *plane_state)
487 {
488 	struct drm_framebuffer *fb = plane_state->fb;
489 	struct qxl_crtc *qcrtc = to_qxl_crtc(plane_state->crtc);
490 	struct qxl_cursor_cmd *cmd;
491 	struct qxl_release *release;
492 	int ret = 0;
493 
494 	if (!qcrtc->cursor_bo)
495 		return 0;
496 
497 	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
498 					 QXL_RELEASE_CURSOR_CMD,
499 					 &release, NULL);
500 	if (ret)
501 		return ret;
502 
503 	ret = qxl_release_list_add(release, qcrtc->cursor_bo);
504 	if (ret)
505 		goto out_free_release;
506 
507 	ret = qxl_release_reserve_list(release, false);
508 	if (ret)
509 		goto out_free_release;
510 
511 	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
512 	cmd->type = QXL_CURSOR_SET;
513 	cmd->u.set.position.x = plane_state->crtc_x + fb->hot_x;
514 	cmd->u.set.position.y = plane_state->crtc_y + fb->hot_y;
515 
516 	cmd->u.set.shape = qxl_bo_physical_address(qdev, qcrtc->cursor_bo, 0);
517 
518 	cmd->u.set.visible = 1;
519 	qxl_release_unmap(qdev, release, &cmd->release_info);
520 
521 	qxl_release_fence_buffer_objects(release);
522 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
523 
524 	return ret;
525 
526 out_free_release:
527 	qxl_release_free(qdev, release);
528 	return ret;
529 }
530 
qxl_primary_move_cursor(struct qxl_device * qdev,struct drm_plane_state * plane_state)531 static int qxl_primary_move_cursor(struct qxl_device *qdev,
532 				   struct drm_plane_state *plane_state)
533 {
534 	struct drm_framebuffer *fb = plane_state->fb;
535 	struct qxl_crtc *qcrtc = to_qxl_crtc(plane_state->crtc);
536 	struct qxl_cursor_cmd *cmd;
537 	struct qxl_release *release;
538 	int ret = 0;
539 
540 	if (!qcrtc->cursor_bo)
541 		return 0;
542 
543 	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
544 					 QXL_RELEASE_CURSOR_CMD,
545 					 &release, NULL);
546 	if (ret)
547 		return ret;
548 
549 	ret = qxl_release_reserve_list(release, true);
550 	if (ret) {
551 		qxl_release_free(qdev, release);
552 		return ret;
553 	}
554 
555 	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
556 	cmd->type = QXL_CURSOR_MOVE;
557 	cmd->u.position.x = plane_state->crtc_x + fb->hot_x;
558 	cmd->u.position.y = plane_state->crtc_y + fb->hot_y;
559 	qxl_release_unmap(qdev, release, &cmd->release_info);
560 
561 	qxl_release_fence_buffer_objects(release);
562 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
563 	return ret;
564 }
565 
qxl_create_cursor(struct qxl_device * qdev,struct qxl_bo * user_bo,int hot_x,int hot_y)566 static struct qxl_bo *qxl_create_cursor(struct qxl_device *qdev,
567 					struct qxl_bo *user_bo,
568 					int hot_x, int hot_y)
569 {
570 	static const u32 size = 64 * 64 * 4;
571 	struct qxl_bo *cursor_bo;
572 	struct iosys_map cursor_map;
573 	struct iosys_map user_map;
574 	struct qxl_cursor cursor;
575 	int ret;
576 
577 	if (!user_bo)
578 		return NULL;
579 
580 	ret = qxl_bo_create(qdev, sizeof(struct qxl_cursor) + size,
581 			    false, true, QXL_GEM_DOMAIN_VRAM, 1,
582 			    NULL, &cursor_bo);
583 	if (ret)
584 		goto err;
585 
586 	ret = qxl_bo_vmap(cursor_bo, &cursor_map);
587 	if (ret)
588 		goto err_unref;
589 
590 	ret = qxl_bo_vmap(user_bo, &user_map);
591 	if (ret)
592 		goto err_unmap;
593 
594 	cursor.header.unique = 0;
595 	cursor.header.type = SPICE_CURSOR_TYPE_ALPHA;
596 	cursor.header.width = 64;
597 	cursor.header.height = 64;
598 	cursor.header.hot_spot_x = hot_x;
599 	cursor.header.hot_spot_y = hot_y;
600 	cursor.data_size = size;
601 	cursor.chunk.next_chunk = 0;
602 	cursor.chunk.prev_chunk = 0;
603 	cursor.chunk.data_size = size;
604 	if (cursor_map.is_iomem) {
605 		memcpy_toio(cursor_map.vaddr_iomem,
606 			    &cursor, sizeof(cursor));
607 		memcpy_toio(cursor_map.vaddr_iomem + sizeof(cursor),
608 			    user_map.vaddr, size);
609 	} else {
610 		memcpy(cursor_map.vaddr,
611 		       &cursor, sizeof(cursor));
612 		memcpy(cursor_map.vaddr + sizeof(cursor),
613 		       user_map.vaddr, size);
614 	}
615 
616 	qxl_bo_vunmap(user_bo);
617 	qxl_bo_vunmap(cursor_bo);
618 	return cursor_bo;
619 
620 err_unmap:
621 	qxl_bo_vunmap(cursor_bo);
622 err_unref:
623 	qxl_bo_unpin(cursor_bo);
624 	qxl_bo_unref(&cursor_bo);
625 err:
626 	return NULL;
627 }
628 
qxl_free_cursor(struct qxl_bo * cursor_bo)629 static void qxl_free_cursor(struct qxl_bo *cursor_bo)
630 {
631 	if (!cursor_bo)
632 		return;
633 
634 	qxl_bo_unpin(cursor_bo);
635 	qxl_bo_unref(&cursor_bo);
636 }
637 
qxl_primary_atomic_update(struct drm_plane * plane,struct drm_atomic_state * state)638 static void qxl_primary_atomic_update(struct drm_plane *plane,
639 				      struct drm_atomic_state *state)
640 {
641 	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
642 									   plane);
643 	struct qxl_device *qdev = to_qxl(plane->dev);
644 	struct qxl_bo *bo = gem_to_qxl_bo(new_state->fb->obj[0]);
645 	struct qxl_bo *primary;
646 	struct drm_clip_rect norect = {
647 	    .x1 = 0,
648 	    .y1 = 0,
649 	    .x2 = new_state->fb->width,
650 	    .y2 = new_state->fb->height
651 	};
652 	uint32_t dumb_shadow_offset = 0;
653 
654 	primary = bo->shadow ? bo->shadow : bo;
655 
656 	if (!primary->is_primary) {
657 		if (qdev->primary_bo)
658 			qxl_io_destroy_primary(qdev);
659 		qxl_io_create_primary(qdev, primary);
660 		qxl_primary_apply_cursor(qdev, plane->state);
661 	}
662 
663 	if (bo->is_dumb)
664 		dumb_shadow_offset =
665 			qdev->dumb_heads[new_state->crtc->index].x;
666 
667 	qxl_draw_dirty_fb(qdev, new_state->fb, bo, 0, 0, &norect, 1, 1,
668 			  dumb_shadow_offset);
669 }
670 
qxl_primary_atomic_disable(struct drm_plane * plane,struct drm_atomic_state * state)671 static void qxl_primary_atomic_disable(struct drm_plane *plane,
672 				       struct drm_atomic_state *state)
673 {
674 	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
675 									   plane);
676 	struct qxl_device *qdev = to_qxl(plane->dev);
677 
678 	if (old_state->fb) {
679 		struct qxl_bo *bo = gem_to_qxl_bo(old_state->fb->obj[0]);
680 
681 		if (bo->shadow)
682 			bo = bo->shadow;
683 		if (bo->is_primary)
684 			qxl_io_destroy_primary(qdev);
685 	}
686 }
687 
qxl_cursor_atomic_update(struct drm_plane * plane,struct drm_atomic_state * state)688 static void qxl_cursor_atomic_update(struct drm_plane *plane,
689 				     struct drm_atomic_state *state)
690 {
691 	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
692 									   plane);
693 	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
694 									   plane);
695 	struct qxl_device *qdev = to_qxl(plane->dev);
696 	struct drm_framebuffer *fb = new_state->fb;
697 
698 	if (fb != old_state->fb) {
699 		qxl_primary_apply_cursor(qdev, new_state);
700 	} else {
701 		qxl_primary_move_cursor(qdev, new_state);
702 	}
703 }
704 
qxl_cursor_atomic_disable(struct drm_plane * plane,struct drm_atomic_state * state)705 static void qxl_cursor_atomic_disable(struct drm_plane *plane,
706 				      struct drm_atomic_state *state)
707 {
708 	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
709 									   plane);
710 	struct qxl_device *qdev = to_qxl(plane->dev);
711 	struct qxl_crtc *qcrtc;
712 	struct qxl_release *release;
713 	struct qxl_cursor_cmd *cmd;
714 	int ret;
715 
716 	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
717 					 QXL_RELEASE_CURSOR_CMD,
718 					 &release, NULL);
719 	if (ret)
720 		return;
721 
722 	ret = qxl_release_reserve_list(release, true);
723 	if (ret) {
724 		qxl_release_free(qdev, release);
725 		return;
726 	}
727 
728 	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
729 	cmd->type = QXL_CURSOR_HIDE;
730 	qxl_release_unmap(qdev, release, &cmd->release_info);
731 
732 	qxl_release_fence_buffer_objects(release);
733 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
734 
735 	qcrtc = to_qxl_crtc(old_state->crtc);
736 	qxl_free_cursor(qcrtc->cursor_bo);
737 	qcrtc->cursor_bo = NULL;
738 }
739 
qxl_update_dumb_head(struct qxl_device * qdev,int index,struct qxl_bo * bo)740 static void qxl_update_dumb_head(struct qxl_device *qdev,
741 				 int index, struct qxl_bo *bo)
742 {
743 	uint32_t width, height;
744 
745 	if (index >= qdev->monitors_config->max_allowed)
746 		return;
747 
748 	if (bo && bo->is_dumb) {
749 		width = bo->surf.width;
750 		height = bo->surf.height;
751 	} else {
752 		width = 0;
753 		height = 0;
754 	}
755 
756 	if (qdev->dumb_heads[index].width == width &&
757 	    qdev->dumb_heads[index].height == height)
758 		return;
759 
760 	DRM_DEBUG("#%d: %dx%d -> %dx%d\n", index,
761 		  qdev->dumb_heads[index].width,
762 		  qdev->dumb_heads[index].height,
763 		  width, height);
764 	qdev->dumb_heads[index].width = width;
765 	qdev->dumb_heads[index].height = height;
766 }
767 
qxl_calc_dumb_shadow(struct qxl_device * qdev,struct qxl_surface * surf)768 static void qxl_calc_dumb_shadow(struct qxl_device *qdev,
769 				 struct qxl_surface *surf)
770 {
771 	struct qxl_head *head;
772 	int i;
773 
774 	memset(surf, 0, sizeof(*surf));
775 	for (i = 0; i < qdev->monitors_config->max_allowed; i++) {
776 		head = qdev->dumb_heads + i;
777 		head->x = surf->width;
778 		surf->width += head->width;
779 		if (surf->height < head->height)
780 			surf->height = head->height;
781 	}
782 	if (surf->width < 64)
783 		surf->width = 64;
784 	if (surf->height < 64)
785 		surf->height = 64;
786 	surf->format = SPICE_SURFACE_FMT_32_xRGB;
787 	surf->stride = surf->width * 4;
788 
789 	if (!qdev->dumb_shadow_bo ||
790 	    qdev->dumb_shadow_bo->surf.width != surf->width ||
791 	    qdev->dumb_shadow_bo->surf.height != surf->height)
792 		DRM_DEBUG("%dx%d\n", surf->width, surf->height);
793 }
794 
qxl_prepare_shadow(struct qxl_device * qdev,struct qxl_bo * user_bo,int crtc_index)795 static void qxl_prepare_shadow(struct qxl_device *qdev, struct qxl_bo *user_bo,
796 			       int crtc_index)
797 {
798 	struct qxl_surface surf;
799 
800 	qxl_update_dumb_head(qdev, crtc_index,
801 			     user_bo);
802 	qxl_calc_dumb_shadow(qdev, &surf);
803 	if (!qdev->dumb_shadow_bo ||
804 	    qdev->dumb_shadow_bo->surf.width  != surf.width ||
805 	    qdev->dumb_shadow_bo->surf.height != surf.height) {
806 		if (qdev->dumb_shadow_bo) {
807 			qxl_bo_unpin(qdev->dumb_shadow_bo);
808 			drm_gem_object_put
809 				(&qdev->dumb_shadow_bo->tbo.base);
810 			qdev->dumb_shadow_bo = NULL;
811 		}
812 		qxl_bo_create(qdev, surf.height * surf.stride,
813 			      true, true, QXL_GEM_DOMAIN_SURFACE, 0,
814 			      &surf, &qdev->dumb_shadow_bo);
815 	}
816 	if (user_bo->shadow != qdev->dumb_shadow_bo) {
817 		if (user_bo->shadow) {
818 			qxl_bo_unpin(user_bo->shadow);
819 			drm_gem_object_put
820 				(&user_bo->shadow->tbo.base);
821 			user_bo->shadow = NULL;
822 		}
823 		drm_gem_object_get(&qdev->dumb_shadow_bo->tbo.base);
824 		user_bo->shadow = qdev->dumb_shadow_bo;
825 		qxl_bo_pin(user_bo->shadow);
826 	}
827 }
828 
qxl_plane_prepare_fb(struct drm_plane * plane,struct drm_plane_state * new_state)829 static int qxl_plane_prepare_fb(struct drm_plane *plane,
830 				struct drm_plane_state *new_state)
831 {
832 	struct qxl_device *qdev = to_qxl(plane->dev);
833 	struct drm_gem_object *obj;
834 	struct qxl_bo *user_bo;
835 	int ret;
836 
837 	if (!new_state->fb)
838 		return 0;
839 
840 	obj = new_state->fb->obj[0];
841 	user_bo = gem_to_qxl_bo(obj);
842 
843 	if (plane->type == DRM_PLANE_TYPE_PRIMARY &&
844 	    user_bo->is_dumb) {
845 		qxl_prepare_shadow(qdev, user_bo, new_state->crtc->index);
846 	}
847 
848 	if (plane->type == DRM_PLANE_TYPE_CURSOR &&
849 	    plane->state->fb != new_state->fb) {
850 		struct qxl_crtc *qcrtc = to_qxl_crtc(new_state->crtc);
851 		struct qxl_bo *old_cursor_bo = qcrtc->cursor_bo;
852 
853 		qcrtc->cursor_bo = qxl_create_cursor(qdev, user_bo,
854 						     new_state->fb->hot_x,
855 						     new_state->fb->hot_y);
856 		qxl_free_cursor(old_cursor_bo);
857 	}
858 
859 	ret = qxl_bo_pin(user_bo);
860 	if (ret)
861 		return ret;
862 
863 	return drm_gem_plane_helper_prepare_fb(plane, new_state);
864 }
865 
qxl_plane_cleanup_fb(struct drm_plane * plane,struct drm_plane_state * old_state)866 static void qxl_plane_cleanup_fb(struct drm_plane *plane,
867 				 struct drm_plane_state *old_state)
868 {
869 	struct drm_gem_object *obj;
870 	struct qxl_bo *user_bo;
871 
872 	if (!old_state->fb) {
873 		/*
874 		 * we never executed prepare_fb, so there's nothing to
875 		 * unpin.
876 		 */
877 		return;
878 	}
879 
880 	obj = old_state->fb->obj[0];
881 	user_bo = gem_to_qxl_bo(obj);
882 	qxl_bo_unpin(user_bo);
883 
884 	if (old_state->fb != plane->state->fb && user_bo->shadow) {
885 		qxl_bo_unpin(user_bo->shadow);
886 		drm_gem_object_put(&user_bo->shadow->tbo.base);
887 		user_bo->shadow = NULL;
888 	}
889 }
890 
891 static const uint32_t qxl_cursor_plane_formats[] = {
892 	DRM_FORMAT_ARGB8888,
893 };
894 
895 static const struct drm_plane_helper_funcs qxl_cursor_helper_funcs = {
896 	.atomic_update = qxl_cursor_atomic_update,
897 	.atomic_disable = qxl_cursor_atomic_disable,
898 	.prepare_fb = qxl_plane_prepare_fb,
899 	.cleanup_fb = qxl_plane_cleanup_fb,
900 };
901 
902 static const struct drm_plane_funcs qxl_cursor_plane_funcs = {
903 	.update_plane	= drm_atomic_helper_update_plane,
904 	.disable_plane	= drm_atomic_helper_disable_plane,
905 	.destroy	= drm_plane_helper_destroy,
906 	.reset		= drm_atomic_helper_plane_reset,
907 	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
908 	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
909 };
910 
911 static const uint32_t qxl_primary_plane_formats[] = {
912 	DRM_FORMAT_XRGB8888,
913 	DRM_FORMAT_ARGB8888,
914 };
915 
916 static const struct drm_plane_helper_funcs primary_helper_funcs = {
917 	.atomic_check = qxl_primary_atomic_check,
918 	.atomic_update = qxl_primary_atomic_update,
919 	.atomic_disable = qxl_primary_atomic_disable,
920 	.prepare_fb = qxl_plane_prepare_fb,
921 	.cleanup_fb = qxl_plane_cleanup_fb,
922 };
923 
924 static const struct drm_plane_funcs qxl_primary_plane_funcs = {
925 	.update_plane	= drm_atomic_helper_update_plane,
926 	.disable_plane	= drm_atomic_helper_disable_plane,
927 	.destroy	= drm_plane_helper_destroy,
928 	.reset		= drm_atomic_helper_plane_reset,
929 	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
930 	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
931 };
932 
qxl_create_plane(struct qxl_device * qdev,unsigned int possible_crtcs,enum drm_plane_type type)933 static struct drm_plane *qxl_create_plane(struct qxl_device *qdev,
934 					  unsigned int possible_crtcs,
935 					  enum drm_plane_type type)
936 {
937 	const struct drm_plane_helper_funcs *helper_funcs = NULL;
938 	struct drm_plane *plane;
939 	const struct drm_plane_funcs *funcs;
940 	const uint32_t *formats;
941 	int num_formats;
942 	int err;
943 
944 	if (type == DRM_PLANE_TYPE_PRIMARY) {
945 		funcs = &qxl_primary_plane_funcs;
946 		formats = qxl_primary_plane_formats;
947 		num_formats = ARRAY_SIZE(qxl_primary_plane_formats);
948 		helper_funcs = &primary_helper_funcs;
949 	} else if (type == DRM_PLANE_TYPE_CURSOR) {
950 		funcs = &qxl_cursor_plane_funcs;
951 		formats = qxl_cursor_plane_formats;
952 		helper_funcs = &qxl_cursor_helper_funcs;
953 		num_formats = ARRAY_SIZE(qxl_cursor_plane_formats);
954 	} else {
955 		return ERR_PTR(-EINVAL);
956 	}
957 
958 	plane = kzalloc(sizeof(*plane), GFP_KERNEL);
959 	if (!plane)
960 		return ERR_PTR(-ENOMEM);
961 
962 	err = drm_universal_plane_init(&qdev->ddev, plane, possible_crtcs,
963 				       funcs, formats, num_formats,
964 				       NULL, type, NULL);
965 	if (err)
966 		goto free_plane;
967 
968 	drm_plane_helper_add(plane, helper_funcs);
969 
970 	return plane;
971 
972 free_plane:
973 	kfree(plane);
974 	return ERR_PTR(-EINVAL);
975 }
976 
qdev_crtc_init(struct drm_device * dev,int crtc_id)977 static int qdev_crtc_init(struct drm_device *dev, int crtc_id)
978 {
979 	struct qxl_crtc *qxl_crtc;
980 	struct drm_plane *primary, *cursor;
981 	struct qxl_device *qdev = to_qxl(dev);
982 	int r;
983 
984 	qxl_crtc = kzalloc(sizeof(struct qxl_crtc), GFP_KERNEL);
985 	if (!qxl_crtc)
986 		return -ENOMEM;
987 
988 	primary = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_PRIMARY);
989 	if (IS_ERR(primary)) {
990 		r = -ENOMEM;
991 		goto free_mem;
992 	}
993 
994 	cursor = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_CURSOR);
995 	if (IS_ERR(cursor)) {
996 		r = -ENOMEM;
997 		goto clean_primary;
998 	}
999 
1000 	r = drm_crtc_init_with_planes(dev, &qxl_crtc->base, primary, cursor,
1001 				      &qxl_crtc_funcs, NULL);
1002 	if (r)
1003 		goto clean_cursor;
1004 
1005 	qxl_crtc->index = crtc_id;
1006 	drm_crtc_helper_add(&qxl_crtc->base, &qxl_crtc_helper_funcs);
1007 	return 0;
1008 
1009 clean_cursor:
1010 	drm_plane_cleanup(cursor);
1011 	kfree(cursor);
1012 clean_primary:
1013 	drm_plane_cleanup(primary);
1014 	kfree(primary);
1015 free_mem:
1016 	kfree(qxl_crtc);
1017 	return r;
1018 }
1019 
qxl_conn_get_modes(struct drm_connector * connector)1020 static int qxl_conn_get_modes(struct drm_connector *connector)
1021 {
1022 	struct drm_device *dev = connector->dev;
1023 	struct qxl_device *qdev = to_qxl(dev);
1024 	struct qxl_output *output = drm_connector_to_qxl_output(connector);
1025 	unsigned int pwidth = 1024;
1026 	unsigned int pheight = 768;
1027 	int ret = 0;
1028 
1029 	if (qdev->client_monitors_config) {
1030 		struct qxl_head *head;
1031 		head = &qdev->client_monitors_config->heads[output->index];
1032 		if (head->width)
1033 			pwidth = head->width;
1034 		if (head->height)
1035 			pheight = head->height;
1036 	}
1037 
1038 	ret += drm_add_modes_noedid(connector, 8192, 8192);
1039 	ret += qxl_add_extra_modes(connector);
1040 	ret += qxl_add_monitors_config_modes(connector);
1041 	drm_set_preferred_mode(connector, pwidth, pheight);
1042 	return ret;
1043 }
1044 
qxl_conn_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)1045 static enum drm_mode_status qxl_conn_mode_valid(struct drm_connector *connector,
1046 			       struct drm_display_mode *mode)
1047 {
1048 	struct drm_device *ddev = connector->dev;
1049 	struct qxl_device *qdev = to_qxl(ddev);
1050 
1051 	if (qxl_check_mode(qdev, mode->hdisplay, mode->vdisplay) != 0)
1052 		return MODE_BAD;
1053 
1054 	return MODE_OK;
1055 }
1056 
qxl_best_encoder(struct drm_connector * connector)1057 static struct drm_encoder *qxl_best_encoder(struct drm_connector *connector)
1058 {
1059 	struct qxl_output *qxl_output =
1060 		drm_connector_to_qxl_output(connector);
1061 
1062 	DRM_DEBUG("\n");
1063 	return &qxl_output->enc;
1064 }
1065 
1066 static const struct drm_connector_helper_funcs qxl_connector_helper_funcs = {
1067 	.get_modes = qxl_conn_get_modes,
1068 	.mode_valid = qxl_conn_mode_valid,
1069 	.best_encoder = qxl_best_encoder,
1070 };
1071 
qxl_conn_detect(struct drm_connector * connector,bool force)1072 static enum drm_connector_status qxl_conn_detect(
1073 			struct drm_connector *connector,
1074 			bool force)
1075 {
1076 	struct qxl_output *output =
1077 		drm_connector_to_qxl_output(connector);
1078 	struct drm_device *ddev = connector->dev;
1079 	struct qxl_device *qdev = to_qxl(ddev);
1080 	bool connected = false;
1081 
1082 	/* The first monitor is always connected */
1083 	if (!qdev->client_monitors_config) {
1084 		if (output->index == 0)
1085 			connected = true;
1086 	} else
1087 		connected = qdev->client_monitors_config->count > output->index &&
1088 		     qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]);
1089 
1090 	DRM_DEBUG("#%d connected: %d\n", output->index, connected);
1091 
1092 	return connected ? connector_status_connected
1093 			 : connector_status_disconnected;
1094 }
1095 
qxl_conn_destroy(struct drm_connector * connector)1096 static void qxl_conn_destroy(struct drm_connector *connector)
1097 {
1098 	struct qxl_output *qxl_output =
1099 		drm_connector_to_qxl_output(connector);
1100 
1101 	drm_connector_unregister(connector);
1102 	drm_connector_cleanup(connector);
1103 	kfree(qxl_output);
1104 }
1105 
1106 static const struct drm_connector_funcs qxl_connector_funcs = {
1107 	.detect = qxl_conn_detect,
1108 	.fill_modes = drm_helper_probe_single_connector_modes,
1109 	.destroy = qxl_conn_destroy,
1110 	.reset = drm_atomic_helper_connector_reset,
1111 	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1112 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1113 };
1114 
qxl_mode_create_hotplug_mode_update_property(struct qxl_device * qdev)1115 static int qxl_mode_create_hotplug_mode_update_property(struct qxl_device *qdev)
1116 {
1117 	if (qdev->hotplug_mode_update_property)
1118 		return 0;
1119 
1120 	qdev->hotplug_mode_update_property =
1121 		drm_property_create_range(&qdev->ddev, DRM_MODE_PROP_IMMUTABLE,
1122 					  "hotplug_mode_update", 0, 1);
1123 
1124 	return 0;
1125 }
1126 
qdev_output_init(struct drm_device * dev,int num_output)1127 static int qdev_output_init(struct drm_device *dev, int num_output)
1128 {
1129 	struct qxl_device *qdev = to_qxl(dev);
1130 	struct qxl_output *qxl_output;
1131 	struct drm_connector *connector;
1132 	struct drm_encoder *encoder;
1133 	int ret;
1134 
1135 	qxl_output = kzalloc(sizeof(struct qxl_output), GFP_KERNEL);
1136 	if (!qxl_output)
1137 		return -ENOMEM;
1138 
1139 	qxl_output->index = num_output;
1140 
1141 	connector = &qxl_output->base;
1142 	encoder = &qxl_output->enc;
1143 	drm_connector_init(dev, &qxl_output->base,
1144 			   &qxl_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL);
1145 
1146 	ret = drm_simple_encoder_init(dev, &qxl_output->enc,
1147 				      DRM_MODE_ENCODER_VIRTUAL);
1148 	if (ret) {
1149 		drm_err(dev, "drm_simple_encoder_init() failed, error %d\n",
1150 			ret);
1151 		goto err_drm_connector_cleanup;
1152 	}
1153 
1154 	/* we get HPD via client monitors config */
1155 	connector->polled = DRM_CONNECTOR_POLL_HPD;
1156 	encoder->possible_crtcs = 1 << num_output;
1157 	drm_connector_attach_encoder(&qxl_output->base,
1158 					  &qxl_output->enc);
1159 	drm_connector_helper_add(connector, &qxl_connector_helper_funcs);
1160 
1161 	drm_object_attach_property(&connector->base,
1162 				   qdev->hotplug_mode_update_property, 0);
1163 	drm_object_attach_property(&connector->base,
1164 				   dev->mode_config.suggested_x_property, 0);
1165 	drm_object_attach_property(&connector->base,
1166 				   dev->mode_config.suggested_y_property, 0);
1167 	return 0;
1168 
1169 err_drm_connector_cleanup:
1170 	drm_connector_cleanup(&qxl_output->base);
1171 	kfree(qxl_output);
1172 	return ret;
1173 }
1174 
1175 static struct drm_framebuffer *
qxl_user_framebuffer_create(struct drm_device * dev,struct drm_file * file_priv,const struct drm_mode_fb_cmd2 * mode_cmd)1176 qxl_user_framebuffer_create(struct drm_device *dev,
1177 			    struct drm_file *file_priv,
1178 			    const struct drm_mode_fb_cmd2 *mode_cmd)
1179 {
1180 	return drm_gem_fb_create_with_funcs(dev, file_priv, mode_cmd,
1181 					    &qxl_fb_funcs);
1182 }
1183 
1184 static const struct drm_mode_config_funcs qxl_mode_funcs = {
1185 	.fb_create = qxl_user_framebuffer_create,
1186 	.atomic_check = drm_atomic_helper_check,
1187 	.atomic_commit = drm_atomic_helper_commit,
1188 };
1189 
qxl_create_monitors_object(struct qxl_device * qdev)1190 int qxl_create_monitors_object(struct qxl_device *qdev)
1191 {
1192 	int ret;
1193 	struct drm_gem_object *gobj;
1194 	struct iosys_map map;
1195 	int monitors_config_size = sizeof(struct qxl_monitors_config) +
1196 		qxl_num_crtc * sizeof(struct qxl_head);
1197 
1198 	ret = qxl_gem_object_create(qdev, monitors_config_size, 0,
1199 				    QXL_GEM_DOMAIN_VRAM,
1200 				    false, false, NULL, &gobj);
1201 	if (ret) {
1202 		DRM_ERROR("%s: failed to create gem ret=%d\n", __func__, ret);
1203 		return -ENOMEM;
1204 	}
1205 	qdev->monitors_config_bo = gem_to_qxl_bo(gobj);
1206 
1207 	ret = qxl_bo_vmap(qdev->monitors_config_bo, &map);
1208 	if (ret)
1209 		return ret;
1210 
1211 	qdev->monitors_config = qdev->monitors_config_bo->kptr;
1212 	qdev->ram_header->monitors_config =
1213 		qxl_bo_physical_address(qdev, qdev->monitors_config_bo, 0);
1214 
1215 	memset(qdev->monitors_config, 0, monitors_config_size);
1216 	qdev->dumb_heads = kcalloc(qxl_num_crtc, sizeof(qdev->dumb_heads[0]),
1217 				   GFP_KERNEL);
1218 	if (!qdev->dumb_heads) {
1219 		qxl_destroy_monitors_object(qdev);
1220 		return -ENOMEM;
1221 	}
1222 	return 0;
1223 }
1224 
qxl_destroy_monitors_object(struct qxl_device * qdev)1225 int qxl_destroy_monitors_object(struct qxl_device *qdev)
1226 {
1227 	int ret;
1228 
1229 	if (!qdev->monitors_config_bo)
1230 		return 0;
1231 
1232 	qdev->monitors_config = NULL;
1233 	qdev->ram_header->monitors_config = 0;
1234 
1235 	ret = qxl_bo_vunmap(qdev->monitors_config_bo);
1236 	if (ret)
1237 		return ret;
1238 
1239 	qxl_bo_unref(&qdev->monitors_config_bo);
1240 	return 0;
1241 }
1242 
qxl_modeset_init(struct qxl_device * qdev)1243 int qxl_modeset_init(struct qxl_device *qdev)
1244 {
1245 	int i;
1246 	int ret;
1247 
1248 	ret = drmm_mode_config_init(&qdev->ddev);
1249 	if (ret)
1250 		return ret;
1251 
1252 	ret = qxl_create_monitors_object(qdev);
1253 	if (ret)
1254 		return ret;
1255 
1256 	qdev->ddev.mode_config.funcs = (void *)&qxl_mode_funcs;
1257 
1258 	/* modes will be validated against the framebuffer size */
1259 	qdev->ddev.mode_config.min_width = 0;
1260 	qdev->ddev.mode_config.min_height = 0;
1261 	qdev->ddev.mode_config.max_width = 8192;
1262 	qdev->ddev.mode_config.max_height = 8192;
1263 
1264 	qdev->ddev.mode_config.fb_base = qdev->vram_base;
1265 
1266 	drm_mode_create_suggested_offset_properties(&qdev->ddev);
1267 	qxl_mode_create_hotplug_mode_update_property(qdev);
1268 
1269 	for (i = 0 ; i < qxl_num_crtc; ++i) {
1270 		qdev_crtc_init(&qdev->ddev, i);
1271 		qdev_output_init(&qdev->ddev, i);
1272 	}
1273 
1274 	qxl_display_read_client_monitors_config(qdev);
1275 
1276 	drm_mode_config_reset(&qdev->ddev);
1277 	return 0;
1278 }
1279 
qxl_modeset_fini(struct qxl_device * qdev)1280 void qxl_modeset_fini(struct qxl_device *qdev)
1281 {
1282 	if (qdev->dumb_shadow_bo) {
1283 		qxl_bo_unpin(qdev->dumb_shadow_bo);
1284 		drm_gem_object_put(&qdev->dumb_shadow_bo->tbo.base);
1285 		qdev->dumb_shadow_bo = NULL;
1286 	}
1287 	qxl_destroy_monitors_object(qdev);
1288 }
1289