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 
27 #include <linux/crc32.h>
28 
29 #include "qxl_drv.h"
30 #include "qxl_object.h"
31 #include "drm_crtc_helper.h"
32 #include <drm/drm_plane_helper.h>
33 
qxl_head_enabled(struct qxl_head * head)34 static bool qxl_head_enabled(struct qxl_head *head)
35 {
36 	return head->width && head->height;
37 }
38 
qxl_alloc_client_monitors_config(struct qxl_device * qdev,unsigned count)39 void qxl_alloc_client_monitors_config(struct qxl_device *qdev, unsigned count)
40 {
41 	if (qdev->client_monitors_config &&
42 	    count > qdev->client_monitors_config->count) {
43 		kfree(qdev->client_monitors_config);
44 		qdev->client_monitors_config = NULL;
45 	}
46 	if (!qdev->client_monitors_config) {
47 		qdev->client_monitors_config = kzalloc(
48 				sizeof(struct qxl_monitors_config) +
49 				sizeof(struct qxl_head) * count, GFP_KERNEL);
50 		if (!qdev->client_monitors_config) {
51 			qxl_io_log(qdev,
52 				   "%s: allocation failure for %u heads\n",
53 				   __func__, count);
54 			return;
55 		}
56 	}
57 	qdev->client_monitors_config->count = count;
58 }
59 
qxl_display_copy_rom_client_monitors_config(struct qxl_device * qdev)60 static int qxl_display_copy_rom_client_monitors_config(struct qxl_device *qdev)
61 {
62 	int i;
63 	int num_monitors;
64 	uint32_t crc;
65 
66 	num_monitors = qdev->rom->client_monitors_config.count;
67 	crc = crc32(0, (const uint8_t *)&qdev->rom->client_monitors_config,
68 		  sizeof(qdev->rom->client_monitors_config));
69 	if (crc != qdev->rom->client_monitors_config_crc) {
70 		qxl_io_log(qdev, "crc mismatch: have %X (%zd) != %X\n", crc,
71 			   sizeof(qdev->rom->client_monitors_config),
72 			   qdev->rom->client_monitors_config_crc);
73 		return 1;
74 	}
75 	if (num_monitors > qdev->monitors_config->max_allowed) {
76 		DRM_DEBUG_KMS("client monitors list will be truncated: %d < %d\n",
77 			      qdev->monitors_config->max_allowed, num_monitors);
78 		num_monitors = qdev->monitors_config->max_allowed;
79 	} else {
80 		num_monitors = qdev->rom->client_monitors_config.count;
81 	}
82 	qxl_alloc_client_monitors_config(qdev, num_monitors);
83 	/* we copy max from the client but it isn't used */
84 	qdev->client_monitors_config->max_allowed =
85 				qdev->monitors_config->max_allowed;
86 	for (i = 0 ; i < qdev->client_monitors_config->count ; ++i) {
87 		struct qxl_urect *c_rect =
88 			&qdev->rom->client_monitors_config.heads[i];
89 		struct qxl_head *client_head =
90 			&qdev->client_monitors_config->heads[i];
91 		client_head->x = c_rect->left;
92 		client_head->y = c_rect->top;
93 		client_head->width = c_rect->right - c_rect->left;
94 		client_head->height = c_rect->bottom - c_rect->top;
95 		client_head->surface_id = 0;
96 		client_head->id = i;
97 		client_head->flags = 0;
98 		DRM_DEBUG_KMS("read %dx%d+%d+%d\n", client_head->width, client_head->height,
99 			  client_head->x, client_head->y);
100 	}
101 	return 0;
102 }
103 
qxl_update_offset_props(struct qxl_device * qdev)104 static void qxl_update_offset_props(struct qxl_device *qdev)
105 {
106 	struct drm_device *dev = qdev->ddev;
107 	struct drm_connector *connector;
108 	struct qxl_output *output;
109 	struct qxl_head *head;
110 
111 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
112 		output = drm_connector_to_qxl_output(connector);
113 
114 		head = &qdev->client_monitors_config->heads[output->index];
115 
116 		drm_object_property_set_value(&connector->base,
117 			dev->mode_config.suggested_x_property, head->x);
118 		drm_object_property_set_value(&connector->base,
119 			dev->mode_config.suggested_y_property, head->y);
120 	}
121 }
122 
qxl_display_read_client_monitors_config(struct qxl_device * qdev)123 void qxl_display_read_client_monitors_config(struct qxl_device *qdev)
124 {
125 
126 	struct drm_device *dev = qdev->ddev;
127 	while (qxl_display_copy_rom_client_monitors_config(qdev)) {
128 		qxl_io_log(qdev, "failed crc check for client_monitors_config,"
129 				 " retrying\n");
130 	}
131 
132 	drm_modeset_lock_all(dev);
133 	qxl_update_offset_props(qdev);
134 	drm_modeset_unlock_all(dev);
135 	if (!drm_helper_hpd_irq_event(qdev->ddev)) {
136 		/* notify that the monitor configuration changed, to
137 		   adjust at the arbitrary resolution */
138 		drm_kms_helper_hotplug_event(qdev->ddev);
139 	}
140 }
141 
qxl_add_monitors_config_modes(struct drm_connector * connector,unsigned * pwidth,unsigned * pheight)142 static int qxl_add_monitors_config_modes(struct drm_connector *connector,
143                                          unsigned *pwidth,
144                                          unsigned *pheight)
145 {
146 	struct drm_device *dev = connector->dev;
147 	struct qxl_device *qdev = dev->dev_private;
148 	struct qxl_output *output = drm_connector_to_qxl_output(connector);
149 	int h = output->index;
150 	struct drm_display_mode *mode = NULL;
151 	struct qxl_head *head;
152 
153 	if (!qdev->client_monitors_config)
154 		return 0;
155 	head = &qdev->client_monitors_config->heads[h];
156 
157 	mode = drm_cvt_mode(dev, head->width, head->height, 60, false, false,
158 			    false);
159 	mode->type |= DRM_MODE_TYPE_PREFERRED;
160 	*pwidth = head->width;
161 	*pheight = head->height;
162 	drm_mode_probed_add(connector, mode);
163 	/* remember the last custom size for mode validation */
164 	qdev->monitors_config_width = mode->hdisplay;
165 	qdev->monitors_config_height = mode->vdisplay;
166 	return 1;
167 }
168 
169 static struct mode_size {
170 	int w;
171 	int h;
172 } common_modes[] = {
173 	{ 640,  480},
174 	{ 720,  480},
175 	{ 800,  600},
176 	{ 848,  480},
177 	{1024,  768},
178 	{1152,  768},
179 	{1280,  720},
180 	{1280,  800},
181 	{1280,  854},
182 	{1280,  960},
183 	{1280, 1024},
184 	{1440,  900},
185 	{1400, 1050},
186 	{1680, 1050},
187 	{1600, 1200},
188 	{1920, 1080},
189 	{1920, 1200}
190 };
191 
qxl_add_common_modes(struct drm_connector * connector,unsigned pwidth,unsigned pheight)192 static int qxl_add_common_modes(struct drm_connector *connector,
193                                 unsigned pwidth,
194                                 unsigned pheight)
195 {
196 	struct drm_device *dev = connector->dev;
197 	struct drm_display_mode *mode = NULL;
198 	int i;
199 	for (i = 0; i < ARRAY_SIZE(common_modes); i++) {
200 		mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h,
201 				    60, false, false, false);
202 		if (common_modes[i].w == pwidth && common_modes[i].h == pheight)
203 			mode->type |= DRM_MODE_TYPE_PREFERRED;
204 		drm_mode_probed_add(connector, mode);
205 	}
206 	return i - 1;
207 }
208 
qxl_crtc_destroy(struct drm_crtc * crtc)209 static void qxl_crtc_destroy(struct drm_crtc *crtc)
210 {
211 	struct qxl_crtc *qxl_crtc = to_qxl_crtc(crtc);
212 
213 	drm_crtc_cleanup(crtc);
214 	kfree(qxl_crtc);
215 }
216 
qxl_crtc_page_flip(struct drm_crtc * crtc,struct drm_framebuffer * fb,struct drm_pending_vblank_event * event,uint32_t page_flip_flags)217 static int qxl_crtc_page_flip(struct drm_crtc *crtc,
218                               struct drm_framebuffer *fb,
219                               struct drm_pending_vblank_event *event,
220                               uint32_t page_flip_flags)
221 {
222 	struct drm_device *dev = crtc->dev;
223 	struct qxl_device *qdev = dev->dev_private;
224 	struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
225 	struct qxl_framebuffer *qfb_src = to_qxl_framebuffer(fb);
226 	struct qxl_framebuffer *qfb_old = to_qxl_framebuffer(crtc->primary->fb);
227 	struct qxl_bo *bo_old = gem_to_qxl_bo(qfb_old->obj);
228 	struct qxl_bo *bo = gem_to_qxl_bo(qfb_src->obj);
229 	unsigned long flags;
230 	struct drm_clip_rect norect = {
231 	    .x1 = 0,
232 	    .y1 = 0,
233 	    .x2 = fb->width,
234 	    .y2 = fb->height
235 	};
236 	int inc = 1;
237 	int one_clip_rect = 1;
238 	int ret = 0;
239 
240 	crtc->primary->fb = fb;
241 	bo_old->is_primary = false;
242 	bo->is_primary = true;
243 
244 	ret = qxl_bo_reserve(bo, false);
245 	if (ret)
246 		return ret;
247 	ret = qxl_bo_pin(bo, bo->type, NULL);
248 	qxl_bo_unreserve(bo);
249 	if (ret)
250 		return ret;
251 
252 	qxl_draw_dirty_fb(qdev, qfb_src, bo, 0, 0,
253 			  &norect, one_clip_rect, inc);
254 
255 	drm_vblank_get(dev, qcrtc->index);
256 
257 	if (event) {
258 		spin_lock_irqsave(&dev->event_lock, flags);
259 		drm_send_vblank_event(dev, qcrtc->index, event);
260 		spin_unlock_irqrestore(&dev->event_lock, flags);
261 	}
262 	drm_vblank_put(dev, qcrtc->index);
263 
264 	ret = qxl_bo_reserve(bo, false);
265 	if (!ret) {
266 		qxl_bo_unpin(bo);
267 		qxl_bo_unreserve(bo);
268 	}
269 
270 	return 0;
271 }
272 
273 static int
qxl_hide_cursor(struct qxl_device * qdev)274 qxl_hide_cursor(struct qxl_device *qdev)
275 {
276 	struct qxl_release *release;
277 	struct qxl_cursor_cmd *cmd;
278 	int ret;
279 
280 	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd), QXL_RELEASE_CURSOR_CMD,
281 					 &release, NULL);
282 	if (ret)
283 		return ret;
284 
285 	ret = qxl_release_reserve_list(release, true);
286 	if (ret) {
287 		qxl_release_free(qdev, release);
288 		return ret;
289 	}
290 
291 	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
292 	cmd->type = QXL_CURSOR_HIDE;
293 	qxl_release_unmap(qdev, release, &cmd->release_info);
294 
295 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
296 	qxl_release_fence_buffer_objects(release);
297 	return 0;
298 }
299 
qxl_crtc_cursor_set2(struct drm_crtc * crtc,struct drm_file * file_priv,uint32_t handle,uint32_t width,uint32_t height,int32_t hot_x,int32_t hot_y)300 static int qxl_crtc_cursor_set2(struct drm_crtc *crtc,
301 				struct drm_file *file_priv,
302 				uint32_t handle,
303 				uint32_t width,
304 				uint32_t height, int32_t hot_x, int32_t hot_y)
305 {
306 	struct drm_device *dev = crtc->dev;
307 	struct qxl_device *qdev = dev->dev_private;
308 	struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
309 	struct drm_gem_object *obj;
310 	struct qxl_cursor *cursor;
311 	struct qxl_cursor_cmd *cmd;
312 	struct qxl_bo *cursor_bo, *user_bo;
313 	struct qxl_release *release;
314 	void *user_ptr;
315 
316 	int size = 64*64*4;
317 	int ret = 0;
318 	if (!handle)
319 		return qxl_hide_cursor(qdev);
320 
321 	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
322 	if (!obj) {
323 		DRM_ERROR("cannot find cursor object\n");
324 		return -ENOENT;
325 	}
326 
327 	user_bo = gem_to_qxl_bo(obj);
328 
329 	ret = qxl_bo_reserve(user_bo, false);
330 	if (ret)
331 		goto out_unref;
332 
333 	ret = qxl_bo_pin(user_bo, QXL_GEM_DOMAIN_CPU, NULL);
334 	qxl_bo_unreserve(user_bo);
335 	if (ret)
336 		goto out_unref;
337 
338 	ret = qxl_bo_kmap(user_bo, &user_ptr);
339 	if (ret)
340 		goto out_unpin;
341 
342 	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
343 					 QXL_RELEASE_CURSOR_CMD,
344 					 &release, NULL);
345 	if (ret)
346 		goto out_kunmap;
347 
348 	ret = qxl_alloc_bo_reserved(qdev, release, sizeof(struct qxl_cursor) + size,
349 			   &cursor_bo);
350 	if (ret)
351 		goto out_free_release;
352 
353 	ret = qxl_release_reserve_list(release, false);
354 	if (ret)
355 		goto out_free_bo;
356 
357 	ret = qxl_bo_kmap(cursor_bo, (void **)&cursor);
358 	if (ret)
359 		goto out_backoff;
360 
361 	cursor->header.unique = 0;
362 	cursor->header.type = SPICE_CURSOR_TYPE_ALPHA;
363 	cursor->header.width = 64;
364 	cursor->header.height = 64;
365 	cursor->header.hot_spot_x = hot_x;
366 	cursor->header.hot_spot_y = hot_y;
367 	cursor->data_size = size;
368 	cursor->chunk.next_chunk = 0;
369 	cursor->chunk.prev_chunk = 0;
370 	cursor->chunk.data_size = size;
371 
372 	memcpy(cursor->chunk.data, user_ptr, size);
373 
374 	qxl_bo_kunmap(cursor_bo);
375 
376 	qxl_bo_kunmap(user_bo);
377 
378 	qcrtc->cur_x += qcrtc->hot_spot_x - hot_x;
379 	qcrtc->cur_y += qcrtc->hot_spot_y - hot_y;
380 	qcrtc->hot_spot_x = hot_x;
381 	qcrtc->hot_spot_y = hot_y;
382 
383 	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
384 	cmd->type = QXL_CURSOR_SET;
385 	cmd->u.set.position.x = qcrtc->cur_x + qcrtc->hot_spot_x;
386 	cmd->u.set.position.y = qcrtc->cur_y + qcrtc->hot_spot_y;
387 
388 	cmd->u.set.shape = qxl_bo_physical_address(qdev, cursor_bo, 0);
389 
390 	cmd->u.set.visible = 1;
391 	qxl_release_unmap(qdev, release, &cmd->release_info);
392 
393 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
394 	qxl_release_fence_buffer_objects(release);
395 
396 	/* finish with the userspace bo */
397 	ret = qxl_bo_reserve(user_bo, false);
398 	if (!ret) {
399 		qxl_bo_unpin(user_bo);
400 		qxl_bo_unreserve(user_bo);
401 	}
402 	drm_gem_object_unreference_unlocked(obj);
403 
404 	qxl_bo_unref(&cursor_bo);
405 
406 	return ret;
407 
408 out_backoff:
409 	qxl_release_backoff_reserve_list(release);
410 out_free_bo:
411 	qxl_bo_unref(&cursor_bo);
412 out_free_release:
413 	qxl_release_free(qdev, release);
414 out_kunmap:
415 	qxl_bo_kunmap(user_bo);
416 out_unpin:
417 	qxl_bo_unpin(user_bo);
418 out_unref:
419 	drm_gem_object_unreference_unlocked(obj);
420 	return ret;
421 }
422 
qxl_crtc_cursor_move(struct drm_crtc * crtc,int x,int y)423 static int qxl_crtc_cursor_move(struct drm_crtc *crtc,
424 				int x, int y)
425 {
426 	struct drm_device *dev = crtc->dev;
427 	struct qxl_device *qdev = dev->dev_private;
428 	struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
429 	struct qxl_release *release;
430 	struct qxl_cursor_cmd *cmd;
431 	int ret;
432 
433 	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd), QXL_RELEASE_CURSOR_CMD,
434 				   &release, NULL);
435 	if (ret)
436 		return ret;
437 
438 	ret = qxl_release_reserve_list(release, true);
439 	if (ret) {
440 		qxl_release_free(qdev, release);
441 		return ret;
442 	}
443 
444 	qcrtc->cur_x = x;
445 	qcrtc->cur_y = y;
446 
447 	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
448 	cmd->type = QXL_CURSOR_MOVE;
449 	cmd->u.position.x = qcrtc->cur_x + qcrtc->hot_spot_x;
450 	cmd->u.position.y = qcrtc->cur_y + qcrtc->hot_spot_y;
451 	qxl_release_unmap(qdev, release, &cmd->release_info);
452 
453 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
454 	qxl_release_fence_buffer_objects(release);
455 
456 	return 0;
457 }
458 
459 
460 static const struct drm_crtc_funcs qxl_crtc_funcs = {
461 	.cursor_set2 = qxl_crtc_cursor_set2,
462 	.cursor_move = qxl_crtc_cursor_move,
463 	.set_config = drm_crtc_helper_set_config,
464 	.destroy = qxl_crtc_destroy,
465 	.page_flip = qxl_crtc_page_flip,
466 };
467 
qxl_user_framebuffer_destroy(struct drm_framebuffer * fb)468 static void qxl_user_framebuffer_destroy(struct drm_framebuffer *fb)
469 {
470 	struct qxl_framebuffer *qxl_fb = to_qxl_framebuffer(fb);
471 
472 	if (qxl_fb->obj)
473 		drm_gem_object_unreference_unlocked(qxl_fb->obj);
474 	drm_framebuffer_cleanup(fb);
475 	kfree(qxl_fb);
476 }
477 
qxl_framebuffer_surface_dirty(struct drm_framebuffer * fb,struct drm_file * file_priv,unsigned flags,unsigned color,struct drm_clip_rect * clips,unsigned num_clips)478 static int qxl_framebuffer_surface_dirty(struct drm_framebuffer *fb,
479 					 struct drm_file *file_priv,
480 					 unsigned flags, unsigned color,
481 					 struct drm_clip_rect *clips,
482 					 unsigned num_clips)
483 {
484 	/* TODO: vmwgfx where this was cribbed from had locking. Why? */
485 	struct qxl_framebuffer *qxl_fb = to_qxl_framebuffer(fb);
486 	struct qxl_device *qdev = qxl_fb->base.dev->dev_private;
487 	struct drm_clip_rect norect;
488 	struct qxl_bo *qobj;
489 	int inc = 1;
490 
491 	drm_modeset_lock_all(fb->dev);
492 
493 	qobj = gem_to_qxl_bo(qxl_fb->obj);
494 	/* if we aren't primary surface ignore this */
495 	if (!qobj->is_primary) {
496 		drm_modeset_unlock_all(fb->dev);
497 		return 0;
498 	}
499 
500 	if (!num_clips) {
501 		num_clips = 1;
502 		clips = &norect;
503 		norect.x1 = norect.y1 = 0;
504 		norect.x2 = fb->width;
505 		norect.y2 = fb->height;
506 	} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
507 		num_clips /= 2;
508 		inc = 2; /* skip source rects */
509 	}
510 
511 	qxl_draw_dirty_fb(qdev, qxl_fb, qobj, flags, color,
512 			  clips, num_clips, inc);
513 
514 	drm_modeset_unlock_all(fb->dev);
515 
516 	return 0;
517 }
518 
519 static const struct drm_framebuffer_funcs qxl_fb_funcs = {
520 	.destroy = qxl_user_framebuffer_destroy,
521 	.dirty = qxl_framebuffer_surface_dirty,
522 /*	TODO?
523  *	.create_handle = qxl_user_framebuffer_create_handle, */
524 };
525 
526 int
qxl_framebuffer_init(struct drm_device * dev,struct qxl_framebuffer * qfb,struct drm_mode_fb_cmd2 * mode_cmd,struct drm_gem_object * obj)527 qxl_framebuffer_init(struct drm_device *dev,
528 		     struct qxl_framebuffer *qfb,
529 		     struct drm_mode_fb_cmd2 *mode_cmd,
530 		     struct drm_gem_object *obj)
531 {
532 	int ret;
533 
534 	qfb->obj = obj;
535 	ret = drm_framebuffer_init(dev, &qfb->base, &qxl_fb_funcs);
536 	if (ret) {
537 		qfb->obj = NULL;
538 		return ret;
539 	}
540 	drm_helper_mode_fill_fb_struct(&qfb->base, mode_cmd);
541 	return 0;
542 }
543 
qxl_crtc_dpms(struct drm_crtc * crtc,int mode)544 static void qxl_crtc_dpms(struct drm_crtc *crtc, int mode)
545 {
546 }
547 
qxl_crtc_mode_fixup(struct drm_crtc * crtc,const struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)548 static bool qxl_crtc_mode_fixup(struct drm_crtc *crtc,
549 				  const struct drm_display_mode *mode,
550 				  struct drm_display_mode *adjusted_mode)
551 {
552 	struct drm_device *dev = crtc->dev;
553 	struct qxl_device *qdev = dev->dev_private;
554 
555 	qxl_io_log(qdev, "%s: (%d,%d) => (%d,%d)\n",
556 		   __func__,
557 		   mode->hdisplay, mode->vdisplay,
558 		   adjusted_mode->hdisplay,
559 		   adjusted_mode->vdisplay);
560 	return true;
561 }
562 
563 void
qxl_send_monitors_config(struct qxl_device * qdev)564 qxl_send_monitors_config(struct qxl_device *qdev)
565 {
566 	int i;
567 
568 	BUG_ON(!qdev->ram_header->monitors_config);
569 
570 	if (qdev->monitors_config->count == 0) {
571 		qxl_io_log(qdev, "%s: 0 monitors??\n", __func__);
572 		return;
573 	}
574 	for (i = 0 ; i < qdev->monitors_config->count ; ++i) {
575 		struct qxl_head *head = &qdev->monitors_config->heads[i];
576 
577 		if (head->y > 8192 || head->x > 8192 ||
578 		    head->width > 8192 || head->height > 8192) {
579 			DRM_ERROR("head %d wrong: %dx%d+%d+%d\n",
580 				  i, head->width, head->height,
581 				  head->x, head->y);
582 			return;
583 		}
584 	}
585 	qxl_io_monitors_config(qdev);
586 }
587 
qxl_monitors_config_set(struct qxl_device * qdev,int index,unsigned x,unsigned y,unsigned width,unsigned height,unsigned surf_id)588 static void qxl_monitors_config_set(struct qxl_device *qdev,
589 				    int index,
590 				    unsigned x, unsigned y,
591 				    unsigned width, unsigned height,
592 				    unsigned surf_id)
593 {
594 	DRM_DEBUG_KMS("%d:%dx%d+%d+%d\n", index, width, height, x, y);
595 	qdev->monitors_config->heads[index].x = x;
596 	qdev->monitors_config->heads[index].y = y;
597 	qdev->monitors_config->heads[index].width = width;
598 	qdev->monitors_config->heads[index].height = height;
599 	qdev->monitors_config->heads[index].surface_id = surf_id;
600 
601 }
602 
qxl_crtc_mode_set(struct drm_crtc * crtc,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode,int x,int y,struct drm_framebuffer * old_fb)603 static int qxl_crtc_mode_set(struct drm_crtc *crtc,
604 			       struct drm_display_mode *mode,
605 			       struct drm_display_mode *adjusted_mode,
606 			       int x, int y,
607 			       struct drm_framebuffer *old_fb)
608 {
609 	struct drm_device *dev = crtc->dev;
610 	struct qxl_device *qdev = dev->dev_private;
611 	struct qxl_framebuffer *qfb;
612 	struct qxl_bo *bo, *old_bo = NULL;
613 	struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
614 	bool recreate_primary = false;
615 	int ret;
616 	int surf_id;
617 	if (!crtc->primary->fb) {
618 		DRM_DEBUG_KMS("No FB bound\n");
619 		return 0;
620 	}
621 
622 	if (old_fb) {
623 		qfb = to_qxl_framebuffer(old_fb);
624 		old_bo = gem_to_qxl_bo(qfb->obj);
625 	}
626 	qfb = to_qxl_framebuffer(crtc->primary->fb);
627 	bo = gem_to_qxl_bo(qfb->obj);
628 	DRM_DEBUG("+%d+%d (%d,%d) => (%d,%d)\n",
629 		  x, y,
630 		  mode->hdisplay, mode->vdisplay,
631 		  adjusted_mode->hdisplay,
632 		  adjusted_mode->vdisplay);
633 
634 	if (bo->is_primary == false)
635 		recreate_primary = true;
636 
637 	if (bo->surf.stride * bo->surf.height > qdev->vram_size) {
638 		DRM_ERROR("Mode doesn't fit in vram size (vgamem)");
639 		return -EINVAL;
640         }
641 
642 	ret = qxl_bo_reserve(bo, false);
643 	if (ret != 0)
644 		return ret;
645 	ret = qxl_bo_pin(bo, bo->type, NULL);
646 	if (ret != 0) {
647 		qxl_bo_unreserve(bo);
648 		return -EINVAL;
649 	}
650 	qxl_bo_unreserve(bo);
651 	if (recreate_primary) {
652 		qxl_io_destroy_primary(qdev);
653 		qxl_io_log(qdev,
654 			   "recreate primary: %dx%d,%d,%d\n",
655 			   bo->surf.width, bo->surf.height,
656 			   bo->surf.stride, bo->surf.format);
657 		qxl_io_create_primary(qdev, 0, bo);
658 		bo->is_primary = true;
659 	}
660 
661 	if (bo->is_primary) {
662 		DRM_DEBUG_KMS("setting surface_id to 0 for primary surface %d on crtc %d\n", bo->surface_id, qcrtc->index);
663 		surf_id = 0;
664 	} else {
665 		surf_id = bo->surface_id;
666 	}
667 
668 	if (old_bo && old_bo != bo) {
669 		old_bo->is_primary = false;
670 		ret = qxl_bo_reserve(old_bo, false);
671 		qxl_bo_unpin(old_bo);
672 		qxl_bo_unreserve(old_bo);
673 	}
674 
675 	qxl_monitors_config_set(qdev, qcrtc->index, x, y,
676 				mode->hdisplay,
677 				mode->vdisplay, surf_id);
678 	return 0;
679 }
680 
qxl_crtc_prepare(struct drm_crtc * crtc)681 static void qxl_crtc_prepare(struct drm_crtc *crtc)
682 {
683 	DRM_DEBUG("current: %dx%d+%d+%d (%d).\n",
684 		  crtc->mode.hdisplay, crtc->mode.vdisplay,
685 		  crtc->x, crtc->y, crtc->enabled);
686 }
687 
qxl_crtc_commit(struct drm_crtc * crtc)688 static void qxl_crtc_commit(struct drm_crtc *crtc)
689 {
690 	DRM_DEBUG("\n");
691 }
692 
qxl_crtc_disable(struct drm_crtc * crtc)693 static void qxl_crtc_disable(struct drm_crtc *crtc)
694 {
695 	struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
696 	struct drm_device *dev = crtc->dev;
697 	struct qxl_device *qdev = dev->dev_private;
698 	if (crtc->primary->fb) {
699 		struct qxl_framebuffer *qfb = to_qxl_framebuffer(crtc->primary->fb);
700 		struct qxl_bo *bo = gem_to_qxl_bo(qfb->obj);
701 		int ret;
702 		ret = qxl_bo_reserve(bo, false);
703 		qxl_bo_unpin(bo);
704 		qxl_bo_unreserve(bo);
705 		crtc->primary->fb = NULL;
706 	}
707 
708 	qxl_monitors_config_set(qdev, qcrtc->index, 0, 0, 0, 0, 0);
709 
710 	qxl_send_monitors_config(qdev);
711 }
712 
713 static const struct drm_crtc_helper_funcs qxl_crtc_helper_funcs = {
714 	.dpms = qxl_crtc_dpms,
715 	.disable = qxl_crtc_disable,
716 	.mode_fixup = qxl_crtc_mode_fixup,
717 	.mode_set = qxl_crtc_mode_set,
718 	.prepare = qxl_crtc_prepare,
719 	.commit = qxl_crtc_commit,
720 };
721 
qdev_crtc_init(struct drm_device * dev,int crtc_id)722 static int qdev_crtc_init(struct drm_device *dev, int crtc_id)
723 {
724 	struct qxl_crtc *qxl_crtc;
725 
726 	qxl_crtc = kzalloc(sizeof(struct qxl_crtc), GFP_KERNEL);
727 	if (!qxl_crtc)
728 		return -ENOMEM;
729 
730 	drm_crtc_init(dev, &qxl_crtc->base, &qxl_crtc_funcs);
731 	qxl_crtc->index = crtc_id;
732 	drm_mode_crtc_set_gamma_size(&qxl_crtc->base, 256);
733 	drm_crtc_helper_add(&qxl_crtc->base, &qxl_crtc_helper_funcs);
734 	return 0;
735 }
736 
qxl_enc_dpms(struct drm_encoder * encoder,int mode)737 static void qxl_enc_dpms(struct drm_encoder *encoder, int mode)
738 {
739 	DRM_DEBUG("\n");
740 }
741 
qxl_enc_mode_fixup(struct drm_encoder * encoder,const struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)742 static bool qxl_enc_mode_fixup(struct drm_encoder *encoder,
743 			       const struct drm_display_mode *mode,
744 			       struct drm_display_mode *adjusted_mode)
745 {
746 	DRM_DEBUG("\n");
747 	return true;
748 }
749 
qxl_enc_prepare(struct drm_encoder * encoder)750 static void qxl_enc_prepare(struct drm_encoder *encoder)
751 {
752 	DRM_DEBUG("\n");
753 }
754 
qxl_write_monitors_config_for_encoder(struct qxl_device * qdev,struct drm_encoder * encoder)755 static void qxl_write_monitors_config_for_encoder(struct qxl_device *qdev,
756 		struct drm_encoder *encoder)
757 {
758 	int i;
759 	struct qxl_output *output = drm_encoder_to_qxl_output(encoder);
760 	struct qxl_head *head;
761 	struct drm_display_mode *mode;
762 
763 	BUG_ON(!encoder);
764 	/* TODO: ugly, do better */
765 	i = output->index;
766 	if (!qdev->monitors_config ||
767 	    qdev->monitors_config->max_allowed <= i) {
768 		DRM_ERROR(
769 		"head number too large or missing monitors config: %p, %d",
770 		qdev->monitors_config,
771 		qdev->monitors_config ?
772 			qdev->monitors_config->max_allowed : -1);
773 		return;
774 	}
775 	if (!encoder->crtc) {
776 		DRM_ERROR("missing crtc on encoder %p\n", encoder);
777 		return;
778 	}
779 	if (i != 0)
780 		DRM_DEBUG("missing for multiple monitors: no head holes\n");
781 	head = &qdev->monitors_config->heads[i];
782 	head->id = i;
783 	if (encoder->crtc->enabled) {
784 		mode = &encoder->crtc->mode;
785 		head->width = mode->hdisplay;
786 		head->height = mode->vdisplay;
787 		head->x = encoder->crtc->x;
788 		head->y = encoder->crtc->y;
789 		if (qdev->monitors_config->count < i + 1)
790 			qdev->monitors_config->count = i + 1;
791 	} else {
792 		head->width = 0;
793 		head->height = 0;
794 		head->x = 0;
795 		head->y = 0;
796 	}
797 	DRM_DEBUG_KMS("setting head %d to +%d+%d %dx%d out of %d\n",
798 		      i, head->x, head->y, head->width, head->height, qdev->monitors_config->count);
799 	head->flags = 0;
800 	/* TODO - somewhere else to call this for multiple monitors
801 	 * (config_commit?) */
802 	qxl_send_monitors_config(qdev);
803 }
804 
qxl_enc_commit(struct drm_encoder * encoder)805 static void qxl_enc_commit(struct drm_encoder *encoder)
806 {
807 	struct qxl_device *qdev = encoder->dev->dev_private;
808 
809 	qxl_write_monitors_config_for_encoder(qdev, encoder);
810 	DRM_DEBUG("\n");
811 }
812 
qxl_enc_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)813 static void qxl_enc_mode_set(struct drm_encoder *encoder,
814 				struct drm_display_mode *mode,
815 				struct drm_display_mode *adjusted_mode)
816 {
817 	DRM_DEBUG("\n");
818 }
819 
qxl_conn_get_modes(struct drm_connector * connector)820 static int qxl_conn_get_modes(struct drm_connector *connector)
821 {
822 	int ret = 0;
823 	struct qxl_device *qdev = connector->dev->dev_private;
824 	unsigned pwidth = 1024;
825 	unsigned pheight = 768;
826 
827 	DRM_DEBUG_KMS("monitors_config=%p\n", qdev->monitors_config);
828 	/* TODO: what should we do here? only show the configured modes for the
829 	 * device, or allow the full list, or both? */
830 	if (qdev->monitors_config && qdev->monitors_config->count) {
831 		ret = qxl_add_monitors_config_modes(connector, &pwidth, &pheight);
832 		if (ret < 0)
833 			return ret;
834 	}
835 	ret += qxl_add_common_modes(connector, pwidth, pheight);
836 	return ret;
837 }
838 
qxl_conn_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)839 static int qxl_conn_mode_valid(struct drm_connector *connector,
840 			       struct drm_display_mode *mode)
841 {
842 	struct drm_device *ddev = connector->dev;
843 	struct qxl_device *qdev = ddev->dev_private;
844 	int i;
845 
846 	/* TODO: is this called for user defined modes? (xrandr --add-mode)
847 	 * TODO: check that the mode fits in the framebuffer */
848 
849 	if(qdev->monitors_config_width == mode->hdisplay &&
850 	   qdev->monitors_config_height == mode->vdisplay)
851 		return MODE_OK;
852 
853 	for (i = 0; i < ARRAY_SIZE(common_modes); i++) {
854 		if (common_modes[i].w == mode->hdisplay && common_modes[i].h == mode->vdisplay)
855 			return MODE_OK;
856 	}
857 	return MODE_BAD;
858 }
859 
qxl_best_encoder(struct drm_connector * connector)860 static struct drm_encoder *qxl_best_encoder(struct drm_connector *connector)
861 {
862 	struct qxl_output *qxl_output =
863 		drm_connector_to_qxl_output(connector);
864 
865 	DRM_DEBUG("\n");
866 	return &qxl_output->enc;
867 }
868 
869 
870 static const struct drm_encoder_helper_funcs qxl_enc_helper_funcs = {
871 	.dpms = qxl_enc_dpms,
872 	.mode_fixup = qxl_enc_mode_fixup,
873 	.prepare = qxl_enc_prepare,
874 	.mode_set = qxl_enc_mode_set,
875 	.commit = qxl_enc_commit,
876 };
877 
878 static const struct drm_connector_helper_funcs qxl_connector_helper_funcs = {
879 	.get_modes = qxl_conn_get_modes,
880 	.mode_valid = qxl_conn_mode_valid,
881 	.best_encoder = qxl_best_encoder,
882 };
883 
qxl_conn_save(struct drm_connector * connector)884 static void qxl_conn_save(struct drm_connector *connector)
885 {
886 	DRM_DEBUG("\n");
887 }
888 
qxl_conn_restore(struct drm_connector * connector)889 static void qxl_conn_restore(struct drm_connector *connector)
890 {
891 	DRM_DEBUG("\n");
892 }
893 
qxl_conn_detect(struct drm_connector * connector,bool force)894 static enum drm_connector_status qxl_conn_detect(
895 			struct drm_connector *connector,
896 			bool force)
897 {
898 	struct qxl_output *output =
899 		drm_connector_to_qxl_output(connector);
900 	struct drm_device *ddev = connector->dev;
901 	struct qxl_device *qdev = ddev->dev_private;
902 	bool connected = false;
903 
904 	/* The first monitor is always connected */
905 	if (!qdev->client_monitors_config) {
906 		if (output->index == 0)
907 			connected = true;
908 	} else
909 		connected = qdev->client_monitors_config->count > output->index &&
910 		     qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]);
911 
912 	DRM_DEBUG("#%d connected: %d\n", output->index, connected);
913 	if (!connected)
914 		qxl_monitors_config_set(qdev, output->index, 0, 0, 0, 0, 0);
915 
916 	return connected ? connector_status_connected
917 			 : connector_status_disconnected;
918 }
919 
qxl_conn_set_property(struct drm_connector * connector,struct drm_property * property,uint64_t value)920 static int qxl_conn_set_property(struct drm_connector *connector,
921 				   struct drm_property *property,
922 				   uint64_t value)
923 {
924 	DRM_DEBUG("\n");
925 	return 0;
926 }
927 
qxl_conn_destroy(struct drm_connector * connector)928 static void qxl_conn_destroy(struct drm_connector *connector)
929 {
930 	struct qxl_output *qxl_output =
931 		drm_connector_to_qxl_output(connector);
932 
933 	drm_connector_unregister(connector);
934 	drm_connector_cleanup(connector);
935 	kfree(qxl_output);
936 }
937 
938 static const struct drm_connector_funcs qxl_connector_funcs = {
939 	.dpms = drm_helper_connector_dpms,
940 	.save = qxl_conn_save,
941 	.restore = qxl_conn_restore,
942 	.detect = qxl_conn_detect,
943 	.fill_modes = drm_helper_probe_single_connector_modes_nomerge,
944 	.set_property = qxl_conn_set_property,
945 	.destroy = qxl_conn_destroy,
946 };
947 
qxl_enc_destroy(struct drm_encoder * encoder)948 static void qxl_enc_destroy(struct drm_encoder *encoder)
949 {
950 	drm_encoder_cleanup(encoder);
951 }
952 
953 static const struct drm_encoder_funcs qxl_enc_funcs = {
954 	.destroy = qxl_enc_destroy,
955 };
956 
qxl_mode_create_hotplug_mode_update_property(struct qxl_device * qdev)957 static int qxl_mode_create_hotplug_mode_update_property(struct qxl_device *qdev)
958 {
959 	if (qdev->hotplug_mode_update_property)
960 		return 0;
961 
962 	qdev->hotplug_mode_update_property =
963 		drm_property_create_range(qdev->ddev, DRM_MODE_PROP_IMMUTABLE,
964 					  "hotplug_mode_update", 0, 1);
965 
966 	return 0;
967 }
968 
qdev_output_init(struct drm_device * dev,int num_output)969 static int qdev_output_init(struct drm_device *dev, int num_output)
970 {
971 	struct qxl_device *qdev = dev->dev_private;
972 	struct qxl_output *qxl_output;
973 	struct drm_connector *connector;
974 	struct drm_encoder *encoder;
975 
976 	qxl_output = kzalloc(sizeof(struct qxl_output), GFP_KERNEL);
977 	if (!qxl_output)
978 		return -ENOMEM;
979 
980 	qxl_output->index = num_output;
981 
982 	connector = &qxl_output->base;
983 	encoder = &qxl_output->enc;
984 	drm_connector_init(dev, &qxl_output->base,
985 			   &qxl_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL);
986 
987 	drm_encoder_init(dev, &qxl_output->enc, &qxl_enc_funcs,
988 			 DRM_MODE_ENCODER_VIRTUAL);
989 
990 	/* we get HPD via client monitors config */
991 	connector->polled = DRM_CONNECTOR_POLL_HPD;
992 	encoder->possible_crtcs = 1 << num_output;
993 	drm_mode_connector_attach_encoder(&qxl_output->base,
994 					  &qxl_output->enc);
995 	drm_encoder_helper_add(encoder, &qxl_enc_helper_funcs);
996 	drm_connector_helper_add(connector, &qxl_connector_helper_funcs);
997 
998 	drm_object_attach_property(&connector->base,
999 				   qdev->hotplug_mode_update_property, 0);
1000 	drm_object_attach_property(&connector->base,
1001 				   dev->mode_config.suggested_x_property, 0);
1002 	drm_object_attach_property(&connector->base,
1003 				   dev->mode_config.suggested_y_property, 0);
1004 	drm_connector_register(connector);
1005 	return 0;
1006 }
1007 
1008 static struct drm_framebuffer *
qxl_user_framebuffer_create(struct drm_device * dev,struct drm_file * file_priv,struct drm_mode_fb_cmd2 * mode_cmd)1009 qxl_user_framebuffer_create(struct drm_device *dev,
1010 			    struct drm_file *file_priv,
1011 			    struct drm_mode_fb_cmd2 *mode_cmd)
1012 {
1013 	struct drm_gem_object *obj;
1014 	struct qxl_framebuffer *qxl_fb;
1015 	int ret;
1016 
1017 	obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
1018 
1019 	qxl_fb = kzalloc(sizeof(*qxl_fb), GFP_KERNEL);
1020 	if (qxl_fb == NULL)
1021 		return NULL;
1022 
1023 	ret = qxl_framebuffer_init(dev, qxl_fb, mode_cmd, obj);
1024 	if (ret) {
1025 		kfree(qxl_fb);
1026 		drm_gem_object_unreference_unlocked(obj);
1027 		return NULL;
1028 	}
1029 
1030 	return &qxl_fb->base;
1031 }
1032 
1033 static const struct drm_mode_config_funcs qxl_mode_funcs = {
1034 	.fb_create = qxl_user_framebuffer_create,
1035 };
1036 
qxl_create_monitors_object(struct qxl_device * qdev)1037 int qxl_create_monitors_object(struct qxl_device *qdev)
1038 {
1039 	int ret;
1040 	struct drm_gem_object *gobj;
1041 	int max_allowed = qxl_num_crtc;
1042 	int monitors_config_size = sizeof(struct qxl_monitors_config) +
1043 		max_allowed * sizeof(struct qxl_head);
1044 
1045 	ret = qxl_gem_object_create(qdev, monitors_config_size, 0,
1046 				    QXL_GEM_DOMAIN_VRAM,
1047 				    false, false, NULL, &gobj);
1048 	if (ret) {
1049 		DRM_ERROR("%s: failed to create gem ret=%d\n", __func__, ret);
1050 		return -ENOMEM;
1051 	}
1052 	qdev->monitors_config_bo = gem_to_qxl_bo(gobj);
1053 
1054 	ret = qxl_bo_reserve(qdev->monitors_config_bo, false);
1055 	if (ret)
1056 		return ret;
1057 
1058 	ret = qxl_bo_pin(qdev->monitors_config_bo, QXL_GEM_DOMAIN_VRAM, NULL);
1059 	if (ret) {
1060 		qxl_bo_unreserve(qdev->monitors_config_bo);
1061 		return ret;
1062 	}
1063 
1064 	qxl_bo_unreserve(qdev->monitors_config_bo);
1065 
1066 	qxl_bo_kmap(qdev->monitors_config_bo, NULL);
1067 
1068 	qdev->monitors_config = qdev->monitors_config_bo->kptr;
1069 	qdev->ram_header->monitors_config =
1070 		qxl_bo_physical_address(qdev, qdev->monitors_config_bo, 0);
1071 
1072 	memset(qdev->monitors_config, 0, monitors_config_size);
1073 	qdev->monitors_config->max_allowed = max_allowed;
1074 	return 0;
1075 }
1076 
qxl_destroy_monitors_object(struct qxl_device * qdev)1077 int qxl_destroy_monitors_object(struct qxl_device *qdev)
1078 {
1079 	int ret;
1080 
1081 	qdev->monitors_config = NULL;
1082 	qdev->ram_header->monitors_config = 0;
1083 
1084 	qxl_bo_kunmap(qdev->monitors_config_bo);
1085 	ret = qxl_bo_reserve(qdev->monitors_config_bo, false);
1086 	if (ret)
1087 		return ret;
1088 
1089 	qxl_bo_unpin(qdev->monitors_config_bo);
1090 	qxl_bo_unreserve(qdev->monitors_config_bo);
1091 
1092 	qxl_bo_unref(&qdev->monitors_config_bo);
1093 	return 0;
1094 }
1095 
qxl_modeset_init(struct qxl_device * qdev)1096 int qxl_modeset_init(struct qxl_device *qdev)
1097 {
1098 	int i;
1099 	int ret;
1100 
1101 	drm_mode_config_init(qdev->ddev);
1102 
1103 	ret = qxl_create_monitors_object(qdev);
1104 	if (ret)
1105 		return ret;
1106 
1107 	qdev->ddev->mode_config.funcs = (void *)&qxl_mode_funcs;
1108 
1109 	/* modes will be validated against the framebuffer size */
1110 	qdev->ddev->mode_config.min_width = 320;
1111 	qdev->ddev->mode_config.min_height = 200;
1112 	qdev->ddev->mode_config.max_width = 8192;
1113 	qdev->ddev->mode_config.max_height = 8192;
1114 
1115 	qdev->ddev->mode_config.fb_base = qdev->vram_base;
1116 
1117 	drm_mode_create_suggested_offset_properties(qdev->ddev);
1118 	qxl_mode_create_hotplug_mode_update_property(qdev);
1119 
1120 	for (i = 0 ; i < qxl_num_crtc; ++i) {
1121 		qdev_crtc_init(qdev->ddev, i);
1122 		qdev_output_init(qdev->ddev, i);
1123 	}
1124 
1125 	qdev->mode_info.mode_config_initialized = true;
1126 
1127 	/* primary surface must be created by this point, to allow
1128 	 * issuing command queue commands and having them read by
1129 	 * spice server. */
1130 	qxl_fbdev_init(qdev);
1131 	return 0;
1132 }
1133 
qxl_modeset_fini(struct qxl_device * qdev)1134 void qxl_modeset_fini(struct qxl_device *qdev)
1135 {
1136 	qxl_fbdev_fini(qdev);
1137 
1138 	qxl_destroy_monitors_object(qdev);
1139 	if (qdev->mode_info.mode_config_initialized) {
1140 		drm_mode_config_cleanup(qdev->ddev);
1141 		qdev->mode_info.mode_config_initialized = false;
1142 	}
1143 }
1144