vbox_mode.c@ 59914

Last change on this file since 59914 was 59914, checked in by vboxsync, 9 years ago
bugref:8087: Additions/x11: support non-root X server: properly report when we are unable to display a hardware mouse cursor because the host does not currently wish to.
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1	/* $Id: vbox_mode.c 59914 2016-03-03 20:22:29Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	* --------------------------------------------------------------------
17	*
18	* This code is based on
19	* ast_mode.c
20	* with the following copyright and permission notice:
21	*
22	* Copyright 2012 Red Hat Inc.
23	* Parts based on xf86-video-ast
24	* Copyright (c) 2005 ASPEED Technology Inc.
25	*
26	* Permission is hereby granted, free of charge, to any person obtaining a
27	* copy of this software and associated documentation files (the
28	* "Software"), to deal in the Software without restriction, including
29	* without limitation the rights to use, copy, modify, merge, publish,
30	* distribute, sub license, and/or sell copies of the Software, and to
31	* permit persons to whom the Software is furnished to do so, subject to
32	* the following conditions:
33	*
34	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
37	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
38	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
39	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
40	* USE OR OTHER DEALINGS IN THE SOFTWARE.
41	*
42	* The above copyright notice and this permission notice (including the
43	* next paragraph) shall be included in all copies or substantial portions
44	* of the Software.
45	*
46	*/
47	/*
48	* Authors: Dave Airlie <[email protected]>
49	*/
50	#include "vbox_drv.h"
51
52	#include <VBox/VBoxVideo.h>
53
54	#include <linux/export.h>
55	#include <drm/drm_crtc_helper.h>
56	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0)
57	# include <drm/drm_plane_helper.h>
58	#endif
59
60	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
61	uint32_t handle, uint32_t width, uint32_t height,
62	int32_t hot_x, int32_t hot_y);
63	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
64
65	/** Set a graphics mode. Poke any required values into registers, do an HGSMI
66	* mode set and tell the host we support advanced graphics functions.
67	*/
68	static void vbox_do_modeset(struct drm_crtc *crtc,
69	const struct drm_display_mode *mode)
70	{
71	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
72	struct vbox_private *vbox;
73	int width, height, bpp, pitch;
74	unsigned crtc_id;
75	uint16_t flags;
76
77	LogFunc(("vboxvideo: %d: vbox_crtc=%p, CRTC_FB(crtc)=%p\n", __LINE__,
78	vbox_crtc, CRTC_FB(crtc)));
79	vbox = crtc->dev->dev_private;
80	width = mode->hdisplay ? mode->hdisplay : 640;
81	height = mode->vdisplay ? mode->vdisplay : 480;
82	crtc_id = vbox_crtc->crtc_id;
83	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
84	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0)
85	pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * bpp / 8;
86	#else
87	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
88	#endif
89	/* if (vbox_crtc->crtc_id == 0 && crtc->enabled)
90	VBoxVideoSetModeRegisters(width, height, pitch * 8 / bpp,
91	CRTC_FB(crtc)->bits_per_pixel, 0,
92	crtc->x, crtc->y); */
93	flags = VBVA_SCREEN_F_ACTIVE;
94	flags \|= (crtc->enabled ? 0 : VBVA_SCREEN_F_DISABLED);
95	VBoxHGSMIProcessDisplayInfo(&vbox->submit_info, vbox_crtc->crtc_id,
96	crtc->x, crtc->y,
97	crtc->x * bpp / 8 + crtc->y * pitch,
98	pitch, width, height,
99	vbox_crtc->blanked ? 0 : bpp, flags);
100	VBoxHGSMIReportFlagsLocation(&vbox->submit_info, vbox->host_flags_offset);
101	vbox_enable_caps(vbox);
102	LogFunc(("vboxvideo: %d\n", __LINE__));
103	}
104
105	static int vbox_set_view(struct drm_crtc *crtc)
106	{
107	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
108	struct vbox_private *vbox = crtc->dev->dev_private;
109	void *p;
110
111	LogFunc(("vboxvideo: %d: vbox_crtc=%p\n", __LINE__, vbox_crtc));
112	/* Tell the host about the view. This design originally targeted the
113	* Windows XP driver architecture and assumed that each screen would have
114	* a dedicated frame buffer with the command buffer following it, the whole
115	* being a "view". The host works out which screen a command buffer belongs
116	* to by checking whether it is in the first view, then whether it is in the
117	* second and so on. The first match wins. We cheat around this by making
118	* the first view be the managed memory plus the first command buffer, the
119	* second the same plus the second buffer and so on. */
120	p = VBoxHGSMIBufferAlloc(&vbox->submit_info, sizeof(VBVAINFOVIEW), HGSMI_CH_VBVA,
121	VBVA_INFO_VIEW);
122	if (p)
123	{
124	VBVAINFOVIEW pInfo = (VBVAINFOVIEW )p;
125	pInfo->u32ViewIndex = vbox_crtc->crtc_id;
126	pInfo->u32ViewOffset = vbox_crtc->fb_offset;
127	pInfo->u32ViewSize = vbox->vram_size - vbox_crtc->fb_offset
128	+ vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
129	pInfo->u32MaxScreenSize = vbox->vram_size - vbox_crtc->fb_offset;
130	VBoxHGSMIBufferSubmit(&vbox->submit_info, p);
131	VBoxHGSMIBufferFree(&vbox->submit_info, p);
132	}
133	else
134	return -ENOMEM;
135	LogFunc(("vboxvideo: %d: p=%p\n", __LINE__, p));
136	return 0;
137	}
138
139	static void vbox_crtc_load_lut(struct drm_crtc *crtc)
140	{
141
142	}
143
144	static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
145	{
146	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
147	struct vbox_private *vbox = crtc->dev->dev_private;
148	unsigned long flags;
149
150	LogFunc(("vboxvideo: %d: vbox_crtc=%p, mode=%d\n", __LINE__, vbox_crtc,
151	mode));
152	switch (mode) {
153	case DRM_MODE_DPMS_ON:
154	vbox_crtc->blanked = false;
155	break;
156	case DRM_MODE_DPMS_STANDBY:
157	case DRM_MODE_DPMS_SUSPEND:
158	case DRM_MODE_DPMS_OFF:
159	vbox_crtc->blanked = true;
160	break;
161	}
162	spin_lock_irqsave(&vbox->dev_lock, flags);
163	vbox_do_modeset(crtc, &crtc->hwmode);
164	spin_unlock_irqrestore(&vbox->dev_lock, flags);
165	LogFunc(("vboxvideo: %d\n", __LINE__));
166	}
167
168	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
169	const struct drm_display_mode *mode,
170	struct drm_display_mode *adjusted_mode)
171	{
172	return true;
173	}
174
175	/* We move buffers which are not in active use out of VRAM to save memory. */
176	static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
177	struct drm_framebuffer *fb,
178	int x, int y, int atomic)
179	{
180	struct vbox_private *vbox = crtc->dev->dev_private;
181	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
182	struct drm_gem_object *obj;
183	struct vbox_framebuffer *vbox_fb;
184	struct vbox_bo *bo;
185	int ret;
186	u64 gpu_addr;
187
188	LogFunc(("vboxvideo: %d: fb=%p, vbox_crtc=%p\n", __LINE__, fb, vbox_crtc));
189	/* push the previous fb to system ram */
190	if (!atomic && fb) {
191	vbox_fb = to_vbox_framebuffer(fb);
192	obj = vbox_fb->obj;
193	bo = gem_to_vbox_bo(obj);
194	ret = vbox_bo_reserve(bo, false);
195	if (ret)
196	return ret;
197	vbox_bo_push_sysram(bo);
198	vbox_bo_unreserve(bo);
199	}
200
201	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
202	obj = vbox_fb->obj;
203	bo = gem_to_vbox_bo(obj);
204
205	ret = vbox_bo_reserve(bo, false);
206	if (ret)
207	return ret;
208
209	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
210	if (ret) {
211	vbox_bo_unreserve(bo);
212	return ret;
213	}
214
215	if (&vbox->fbdev->afb == vbox_fb) {
216	/* if pushing console in kmap it */
217	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
218	if (ret)
219	DRM_ERROR("failed to kmap fbcon\n");
220	vbox_disable_accel(vbox);
221	vbox_disable_caps(vbox);
222	}
223	else {
224	vbox_enable_accel(vbox);
225	vbox_enable_caps(vbox);
226	}
227	vbox_bo_unreserve(bo);
228
229	/* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
230	vbox_crtc->fb_offset = gpu_addr;
231
232	LogFunc(("vboxvideo: %d: vbox_fb=%p, obj=%p, bo=%p, gpu_addr=%u\n",
233	__LINE__, vbox_fb, obj, bo, (unsigned)gpu_addr));
234	return 0;
235	}
236
237	static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
238	struct drm_framebuffer *old_fb)
239	{
240	LogFunc(("vboxvideo: %d\n", __LINE__));
241	return vbox_crtc_do_set_base(crtc, old_fb, x, y, 0);
242	}
243
244	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
245	struct drm_display_mode *mode,
246	struct drm_display_mode *adjusted_mode,
247	int x, int y,
248	struct drm_framebuffer *old_fb)
249	{
250	struct vbox_private *vbox = crtc->dev->dev_private;
251	unsigned long flags;
252	int rc = 0;
253
254	LogFunc(("vboxvideo: %d: vbox=%p\n", __LINE__, vbox));
255	vbox_crtc_mode_set_base(crtc, x, y, old_fb);
256	spin_lock_irqsave(&vbox->dev_lock, flags);
257	rc = vbox_set_view(crtc);
258	if (!rc)
259	vbox_do_modeset(crtc, mode);
260	spin_unlock_irqrestore(&vbox->dev_lock, flags);
261	LogFunc(("vboxvideo: %d\n", __LINE__));
262	return rc;
263	}
264
265	static void vbox_crtc_disable(struct drm_crtc *crtc)
266	{
267
268	}
269
270	static void vbox_crtc_prepare(struct drm_crtc *crtc)
271	{
272
273	}
274
275	static void vbox_crtc_commit(struct drm_crtc *crtc)
276	{
277
278	}
279
280
281	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
282	.dpms = vbox_crtc_dpms,
283	.mode_fixup = vbox_crtc_mode_fixup,
284	.mode_set = vbox_crtc_mode_set,
285	/* .mode_set_base = vbox_crtc_mode_set_base, */
286	.disable = vbox_crtc_disable,
287	.load_lut = vbox_crtc_load_lut,
288	.prepare = vbox_crtc_prepare,
289	.commit = vbox_crtc_commit,
290
291	};
292
293	static void vbox_crtc_reset(struct drm_crtc *crtc)
294	{
295
296	}
297
298
299	static void vbox_crtc_destroy(struct drm_crtc *crtc)
300	{
301	drm_crtc_cleanup(crtc);
302	kfree(crtc);
303	}
304
305	static const struct drm_crtc_funcs vbox_crtc_funcs = {
306	.cursor_move = vbox_cursor_move,
307	#ifdef DRM_IOCTL_MODE_CURSOR2
308	.cursor_set2 = vbox_cursor_set2,
309	#endif
310	.reset = vbox_crtc_reset,
311	.set_config = drm_crtc_helper_set_config,
312	/* .gamma_set = vbox_crtc_gamma_set, */
313	.destroy = vbox_crtc_destroy,
314	};
315
316	static int vbox_crtc_init(struct drm_device *dev, unsigned i)
317	{
318	struct vbox_crtc *crtc;
319
320	LogFunc(("vboxvideo: %d\n", __LINE__));
321	crtc = kzalloc(sizeof(struct vbox_crtc), GFP_KERNEL);
322	if (!crtc)
323	return -ENOMEM;
324	crtc->crtc_id = i;
325
326	drm_crtc_init(dev, &crtc->base, &vbox_crtc_funcs);
327	drm_mode_crtc_set_gamma_size(&crtc->base, 256);
328	drm_crtc_helper_add(&crtc->base, &vbox_crtc_helper_funcs);
329	LogFunc(("vboxvideo: %d: crtc=%p\n", __LINE__, crtc));
330
331	return 0;
332	}
333
334	static void vbox_encoder_destroy(struct drm_encoder *encoder)
335	{
336	LogFunc(("vboxvideo: %d: encoder=%p\n", __LINE__, encoder));
337	drm_encoder_cleanup(encoder);
338	kfree(encoder);
339	}
340
341
342	static struct drm_encoder vbox_best_single_encoder(struct drm_connector connector)
343	{
344	int enc_id = connector->encoder_ids[0];
345
346	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
347	/* pick the encoder ids */
348	if (enc_id)
349	return drm_encoder_find(connector->dev, enc_id);
350	LogFunc(("vboxvideo: %d\n", __LINE__));
351	return NULL;
352	}
353
354
355	static const struct drm_encoder_funcs vbox_enc_funcs = {
356	.destroy = vbox_encoder_destroy,
357	};
358
359	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
360	{
361
362	}
363
364	static bool vbox_mode_fixup(struct drm_encoder *encoder,
365	const struct drm_display_mode *mode,
366	struct drm_display_mode *adjusted_mode)
367	{
368	return true;
369	}
370
371	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
372	struct drm_display_mode *mode,
373	struct drm_display_mode *adjusted_mode)
374	{
375	}
376
377	static void vbox_encoder_prepare(struct drm_encoder *encoder)
378	{
379
380	}
381
382	static void vbox_encoder_commit(struct drm_encoder *encoder)
383	{
384
385	}
386
387
388	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
389	.dpms = vbox_encoder_dpms,
390	.mode_fixup = vbox_mode_fixup,
391	.prepare = vbox_encoder_prepare,
392	.commit = vbox_encoder_commit,
393	.mode_set = vbox_encoder_mode_set,
394	};
395
396	static struct drm_encoder vbox_encoder_init(struct drm_device dev, unsigned i)
397	{
398	struct vbox_encoder *vbox_encoder;
399
400	LogFunc(("vboxvideo: %d: dev=%d\n", __LINE__));
401	vbox_encoder = kzalloc(sizeof(struct vbox_encoder), GFP_KERNEL);
402	if (!vbox_encoder)
403	return NULL;
404
405	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
406	DRM_MODE_ENCODER_DAC);
407	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
408
409	vbox_encoder->base.possible_crtcs = 1 << i;
410	LogFunc(("vboxvideo: %d: vbox_encoder=%p\n", __LINE__, vbox_encoder));
411	return &vbox_encoder->base;
412	}
413
414	static int vbox_get_modes(struct drm_connector *connector)
415	{
416	struct vbox_connector *vbox_connector = NULL;
417	struct drm_display_mode *mode = NULL;
418	unsigned num_modes = 0;
419	int preferred_width, preferred_height;
420
421	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
422	vbox_connector = to_vbox_connector(connector);
423	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
424	preferred_width = vbox_connector->mode_hint.width ? vbox_connector->mode_hint.width : 1024;
425	preferred_height = vbox_connector->mode_hint.height ? vbox_connector->mode_hint.height : 768;
426	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 60, false,
427	false, false);
428	if (mode)
429	{
430	mode->type \|= DRM_MODE_TYPE_PREFERRED;
431	drm_mode_probed_add(connector, mode);
432	++num_modes;
433	}
434	return num_modes;
435	}
436
437	static int vbox_mode_valid(struct drm_connector *connector,
438	struct drm_display_mode *mode)
439	{
440	return MODE_OK;
441	}
442
443	static void vbox_connector_destroy(struct drm_connector *connector)
444	{
445	struct vbox_connector *vbox_connector = NULL;
446
447	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
448	vbox_connector = to_vbox_connector(connector);
449	device_remove_file(connector->dev->dev, &vbox_connector->sysfs_node);
450	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
451	drm_sysfs_connector_remove(connector);
452	#else
453	drm_connector_unregister(connector);
454	#endif
455	drm_connector_cleanup(connector);
456	kfree(connector);
457	}
458
459	static enum drm_connector_status
460	vbox_connector_detect(struct drm_connector *connector, bool force)
461	{
462	struct vbox_connector *vbox_connector = NULL;
463
464	(void) force;
465	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
466	vbox_connector = to_vbox_connector(connector);
467	return !vbox_connector->mode_hint.disconnected;
468	}
469
470	static int vbox_fill_modes(struct drm_connector *connector, uint32_t max_x, uint32_t max_y)
471	{
472	struct vbox_connector *vbox_connector;
473	struct drm_device *dev;
474	struct drm_display_mode mode, iterator;
475
476	LogFunc(("vboxvideo: %d: connector=%p, max_x=%lu, max_y = %lu\n", __LINE__,
477	connector, (unsigned long)max_x, (unsigned long)max_y));
478	vbox_connector = to_vbox_connector(connector);
479	dev = vbox_connector->base.dev;
480	list_for_each_entry_safe(mode, iterator, &connector->modes, head)
481	{
482	list_del(&mode->head);
483	drm_mode_destroy(dev, mode);
484	}
485	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
486	}
487
488	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
489	.mode_valid = vbox_mode_valid,
490	.get_modes = vbox_get_modes,
491	.best_encoder = vbox_best_single_encoder,
492	};
493
494	static const struct drm_connector_funcs vbox_connector_funcs = {
495	.dpms = drm_helper_connector_dpms,
496	.detect = vbox_connector_detect,
497	.fill_modes = vbox_fill_modes,
498	.destroy = vbox_connector_destroy,
499	};
500
501	ssize_t vbox_connector_write_sysfs(struct device *dev,
502	struct device_attribute *pAttr,
503	const char *psz, size_t cch)
504	{
505	struct vbox_connector *vbox_connector;
506	struct vbox_private *vbox;
507
508	LogFunc(("vboxvideo: %d: dev=%p, pAttr=%p, psz=%s, cch=%llu\n", __LINE__,
509	dev, pAttr, psz, (unsigned long long)cch));
510	vbox_connector = container_of(pAttr, struct vbox_connector,
511	sysfs_node);
512	vbox = vbox_connector->base.dev->dev_private;
513	drm_kms_helper_hotplug_event(vbox_connector->base.dev);
514	if (vbox->fbdev)
515	drm_fb_helper_hotplug_event(&vbox->fbdev->helper);
516	return cch;
517	}
518
519	static int vbox_connector_init(struct drm_device *dev, unsigned cScreen,
520	struct drm_encoder *encoder)
521	{
522	struct vbox_connector *vbox_connector;
523	struct drm_connector *connector;
524	int rc;
525
526	LogFunc(("vboxvideo: %d: dev=%p, encoder=%p\n", __LINE__, dev,
527	encoder));
528	vbox_connector = kzalloc(sizeof(struct vbox_connector), GFP_KERNEL);
529	if (!vbox_connector)
530	return -ENOMEM;
531
532	connector = &vbox_connector->base;
533	vbox_connector->crtc_id = cScreen;
534
535	/*
536	* Set up the sysfs file we use for getting video mode hints from user
537	* space.
538	*/
539	snprintf(vbox_connector->name, sizeof(vbox_connector->name),
540	"vbox_screen_%u", cScreen);
541	vbox_connector->sysfs_node.attr.name = vbox_connector->name;
542	vbox_connector->sysfs_node.attr.mode = S_IWUSR;
543	vbox_connector->sysfs_node.show = NULL;
544	vbox_connector->sysfs_node.store = vbox_connector_write_sysfs;
545	rc = device_create_file(dev->dev, &vbox_connector->sysfs_node);
546	if (rc < 0)
547	{
548	kfree(vbox_connector);
549	return rc;
550	}
551	drm_connector_init(dev, connector, &vbox_connector_funcs,
552	DRM_MODE_CONNECTOR_VGA);
553	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
554
555	connector->interlace_allowed = 0;
556	connector->doublescan_allowed = 0;
557
558	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
559	drm_mode_create_suggested_offset_properties(dev);
560	drm_object_attach_property(&connector->base,
561	dev->mode_config.suggested_x_property, 0);
562	drm_object_attach_property(&connector->base,
563	dev->mode_config.suggested_y_property, 0);
564	#endif
565	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
566	drm_sysfs_connector_add(connector);
567	#else
568	drm_connector_register(connector);
569	#endif
570
571	drm_mode_connector_attach_encoder(connector, encoder);
572
573	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
574	return 0;
575	}
576
577	int vbox_mode_init(struct drm_device *dev)
578	{
579	struct vbox_private *vbox = dev->dev_private;
580	struct drm_encoder *encoder;
581	unsigned i;
582	/* vbox_cursor_init(dev); */
583	LogFunc(("vboxvideo: %d: dev=%p\n", __LINE__, dev));
584	for (i = 0; i < vbox->num_crtcs; ++i)
585	{
586	vbox_crtc_init(dev, i);
587	encoder = vbox_encoder_init(dev, i);
588	if (encoder)
589	vbox_connector_init(dev, i, encoder);
590	}
591	return 0;
592	}
593
594	void vbox_mode_fini(struct drm_device *dev)
595	{
596	/* vbox_cursor_fini(dev); */
597	}
598
599
600	void vbox_refresh_modes(struct drm_device *dev)
601	{
602	struct vbox_private *vbox = dev->dev_private;
603	struct drm_crtc *crtci;
604	unsigned long flags;
605
606	LogFunc(("vboxvideo: %d\n", __LINE__));
607	spin_lock_irqsave(&vbox->dev_lock, flags);
608	list_for_each_entry(crtci, &dev->mode_config.crtc_list, head)
609	vbox_do_modeset(crtci, &crtci->hwmode);
610	spin_unlock_irqrestore(&vbox->dev_lock, flags);
611	LogFunc(("vboxvideo: %d\n", __LINE__));
612	}
613
614
615	/** Copy the ARGB image and generate the mask, which is needed in case the host
616	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
617	* if the corresponding alpha value in the ARGB image is greater than 0xF0. */
618	static void copy_cursor_image(u8 src, u8 dst, int width, int height,
619	size_t mask_size)
620	{
621	unsigned i, j;
622	size_t line_size = (width + 7) / 8;
623
624	memcpy(dst + mask_size, src, width * height * 4);
625	for (i = 0; i < height; ++i)
626	for (j = 0; j < width; ++j)
627	if (((uint32_t )src)[i width + j] > 0xf0000000)
628	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
629	}
630
631	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
632	uint32_t handle, uint32_t width, uint32_t height,
633	int32_t hot_x, int32_t hot_y)
634	{
635	struct vbox_private *vbox = crtc->dev->dev_private;
636	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
637	struct drm_gem_object *obj;
638	struct vbox_bo *bo;
639	int ret, rc;
640	struct ttm_bo_kmap_obj uobj_map;
641	u8 *src;
642	u8 *dst = NULL;
643	u32 caps = 0;
644	size_t data_size, mask_size;
645	bool src_isiomem;
646
647	if (!handle) {
648	/* Hide cursor. */
649	VBoxHGSMIUpdatePointerShape(&vbox->submit_info, 0, 0, 0, 0, 0, NULL, 0);
650	return 0;
651	}
652	if ( width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT
653	\|\| width == 0 \|\| hot_x > width \|\| height == 0 \|\| hot_y > height)
654	return -EINVAL;
655	rc = VBoxQueryConfHGSMI(&vbox->submit_info,
656	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
657	ret = -RTErrConvertToErrno(rc);
658	if (ret)
659	return ret;
660	if ( caps & VMMDEV_MOUSE_HOST_CANNOT_HWPOINTER
661	\|\| !(caps & VMMDEV_MOUSE_HOST_WANTS_ABSOLUTE))
662	return -EINVAL;
663
664	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
665	if (obj)
666	{
667	bo = gem_to_vbox_bo(obj);
668	ret = vbox_bo_reserve(bo, false);
669	if (!ret)
670	{
671	/* The mask must be calculated based on the alpha channel, one bit
672	* per ARGB word, and must be 32-bit padded. */
673	mask_size = ((width + 7) / 8 * height + 3) & ~3;
674	data_size = width * height * 4 + mask_size;
675	dst = kmalloc(data_size, GFP_KERNEL);
676	if (dst)
677	{
678	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
679	if (!ret)
680	{
681	src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
682	if (!src_isiomem)
683	{
684	uint32_t flags = VBOX_MOUSE_POINTER_VISIBLE
685	\| VBOX_MOUSE_POINTER_SHAPE
686	\| VBOX_MOUSE_POINTER_ALPHA;
687	copy_cursor_image(src, dst, width, height, mask_size);
688	rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags,
689	hot_x, hot_y, width,
690	height, dst, data_size);
691	ret = -RTErrConvertToErrno(rc);
692	}
693	else
694	DRM_ERROR("src cursor bo should be in main memory\n");
695	ttm_bo_kunmap(&uobj_map);
696	}
697	kfree(dst);
698	}
699	vbox_bo_unreserve(bo);
700	}
701	drm_gem_object_unreference_unlocked(obj);
702	}
703	else
704	{
705	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
706	ret = -ENOENT;
707	}
708	return ret;
709	}
710
711	static int vbox_cursor_move(struct drm_crtc *crtc,
712	int x, int y)
713	{
714	return 0;
715	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 59914

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