vbox_mode.c@ 60290

Last change on this file since 60290 was 60290, checked in by vboxsync, 9 years ago
bugref:8087: Additions/x11: support non-root X server: set up mouse multi-screen input mapping correctly in kernel video driver, second try.
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1	/* $Id: vbox_mode.c 60290 2016-04-01 15:50:39Z 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	/* This is the old way of setting graphics modes. It assumed one screen
90	* and a frame-buffer at the start of video RAM. On older versions of
91	* VirtualBox, certain parts of the code still assume that the first
92	* screen is programmed this way, so try to fake it. */
93	if ( vbox_crtc->crtc_id == 0
94	&& crtc->enabled
95	&& vbox_crtc->fb_offset / pitch < 0xffff - crtc->y
96	&& vbox_crtc->fb_offset % (bpp / 8) == 0)
97	VBoxVideoSetModeRegisters(width, height, pitch * 8 / bpp,
98	CRTC_FB(crtc)->bits_per_pixel, 0,
99	vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x,
100	vbox_crtc->fb_offset / pitch + crtc->y);
101	flags = VBVA_SCREEN_F_ACTIVE;
102	flags \|= (crtc->enabled && !vbox_crtc->blanked ? 0 : VBVA_SCREEN_F_BLANK);
103	flags \|= (vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0);
104	VBoxHGSMIProcessDisplayInfo(&vbox->submit_info, vbox_crtc->crtc_id,
105	crtc->x, crtc->y,
106	crtc->x * bpp / 8 + crtc->y * pitch,
107	pitch, width, height,
108	vbox_crtc->blanked ? 0 : bpp, flags);
109	VBoxHGSMIReportFlagsLocation(&vbox->submit_info, vbox->host_flags_offset);
110	vbox_enable_caps(vbox);
111	LogFunc(("vboxvideo: %d\n", __LINE__));
112	}
113
114	static int vbox_set_view(struct drm_crtc *crtc)
115	{
116	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
117	struct vbox_private *vbox = crtc->dev->dev_private;
118	void *p;
119
120	LogFunc(("vboxvideo: %d: vbox_crtc=%p\n", __LINE__, vbox_crtc));
121	/* Tell the host about the view. This design originally targeted the
122	* Windows XP driver architecture and assumed that each screen would have
123	* a dedicated frame buffer with the command buffer following it, the whole
124	* being a "view". The host works out which screen a command buffer belongs
125	* to by checking whether it is in the first view, then whether it is in the
126	* second and so on. The first match wins. We cheat around this by making
127	* the first view be the managed memory plus the first command buffer, the
128	* second the same plus the second buffer and so on. */
129	p = VBoxHGSMIBufferAlloc(&vbox->submit_info, sizeof(VBVAINFOVIEW), HGSMI_CH_VBVA,
130	VBVA_INFO_VIEW);
131	if (p)
132	{
133	VBVAINFOVIEW pInfo = (VBVAINFOVIEW )p;
134	pInfo->u32ViewIndex = vbox_crtc->crtc_id;
135	pInfo->u32ViewOffset = vbox_crtc->fb_offset;
136	pInfo->u32ViewSize = vbox->vram_size - vbox_crtc->fb_offset
137	+ vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
138	pInfo->u32MaxScreenSize = vbox->vram_size - vbox_crtc->fb_offset;
139	VBoxHGSMIBufferSubmit(&vbox->submit_info, p);
140	VBoxHGSMIBufferFree(&vbox->submit_info, p);
141	}
142	else
143	return -ENOMEM;
144	LogFunc(("vboxvideo: %d: p=%p\n", __LINE__, p));
145	return 0;
146	}
147
148	static void vbox_crtc_load_lut(struct drm_crtc *crtc)
149	{
150
151	}
152
153	static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
154	{
155	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
156	struct vbox_private *vbox = crtc->dev->dev_private;
157
158	LogFunc(("vboxvideo: %d: vbox_crtc=%p, mode=%d\n", __LINE__, vbox_crtc,
159	mode));
160	switch (mode) {
161	case DRM_MODE_DPMS_ON:
162	vbox_crtc->blanked = false;
163	break;
164	case DRM_MODE_DPMS_STANDBY:
165	case DRM_MODE_DPMS_SUSPEND:
166	case DRM_MODE_DPMS_OFF:
167	vbox_crtc->blanked = true;
168	break;
169	}
170	mutex_lock(&vbox->hw_mutex);
171	vbox_do_modeset(crtc, &crtc->hwmode);
172	mutex_unlock(&vbox->hw_mutex);
173	LogFunc(("vboxvideo: %d\n", __LINE__));
174	}
175
176	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
177	const struct drm_display_mode *mode,
178	struct drm_display_mode *adjusted_mode)
179	{
180	return true;
181	}
182
183	/* We move buffers which are not in active use out of VRAM to save memory. */
184	static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
185	struct drm_framebuffer *fb,
186	int x, int y, int atomic)
187	{
188	struct vbox_private *vbox = crtc->dev->dev_private;
189	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
190	struct drm_gem_object *obj;
191	struct vbox_framebuffer *vbox_fb;
192	struct vbox_bo *bo;
193	int ret;
194	u64 gpu_addr;
195
196	LogFunc(("vboxvideo: %d: fb=%p, vbox_crtc=%p\n", __LINE__, fb, vbox_crtc));
197	/* push the previous fb to system ram */
198	if (!atomic && fb) {
199	vbox_fb = to_vbox_framebuffer(fb);
200	obj = vbox_fb->obj;
201	bo = gem_to_vbox_bo(obj);
202	ret = vbox_bo_reserve(bo, false);
203	if (ret)
204	return ret;
205	vbox_bo_push_sysram(bo);
206	vbox_bo_unreserve(bo);
207	}
208
209	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
210	obj = vbox_fb->obj;
211	bo = gem_to_vbox_bo(obj);
212
213	ret = vbox_bo_reserve(bo, false);
214	if (ret)
215	return ret;
216
217	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
218	if (ret) {
219	vbox_bo_unreserve(bo);
220	return ret;
221	}
222
223	if (&vbox->fbdev->afb == vbox_fb) {
224	/* if pushing console in kmap it */
225	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
226	if (ret)
227	DRM_ERROR("failed to kmap fbcon\n");
228	vbox_disable_accel(vbox);
229	vbox_disable_caps(vbox);
230	}
231	else {
232	vbox_enable_accel(vbox);
233	vbox_enable_caps(vbox);
234	}
235	vbox_bo_unreserve(bo);
236
237	/* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
238	vbox_crtc->fb_offset = gpu_addr;
239	if (vbox_crtc->crtc_id == 0) {
240	vbox->input_mapping_width = CRTC_FB(crtc)->width;
241	vbox->input_mapping_height = CRTC_FB(crtc)->height;
242	}
243	LogFunc(("vboxvideo: %d: vbox_fb=%p, obj=%p, bo=%p, gpu_addr=%u\n",
244	__LINE__, vbox_fb, obj, bo, (unsigned)gpu_addr));
245	return 0;
246	}
247
248	static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
249	struct drm_framebuffer *old_fb)
250	{
251	LogFunc(("vboxvideo: %d\n", __LINE__));
252	return vbox_crtc_do_set_base(crtc, old_fb, x, y, 0);
253	}
254
255	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
256	struct drm_display_mode *mode,
257	struct drm_display_mode *adjusted_mode,
258	int x, int y,
259	struct drm_framebuffer *old_fb)
260	{
261	struct vbox_private *vbox = crtc->dev->dev_private;
262	int rc = 0;
263
264	LogFunc(("vboxvideo: %d: vbox=%p\n", __LINE__, vbox));
265	vbox_crtc_mode_set_base(crtc, x, y, old_fb);
266	mutex_lock(&vbox->hw_mutex);
267	rc = vbox_set_view(crtc);
268	if (!rc)
269	vbox_do_modeset(crtc, mode);
270	/* Note that the input mapping is always relative to the first screen. */
271	VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
272	vbox->input_mapping_width,
273	vbox->input_mapping_height);
274	mutex_unlock(&vbox->hw_mutex);
275	LogFunc(("vboxvideo: %d\n", __LINE__));
276	return rc;
277	}
278
279	static void vbox_crtc_disable(struct drm_crtc *crtc)
280	{
281
282	}
283
284	static void vbox_crtc_prepare(struct drm_crtc *crtc)
285	{
286
287	}
288
289	static void vbox_crtc_commit(struct drm_crtc *crtc)
290	{
291
292	}
293
294
295	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
296	.dpms = vbox_crtc_dpms,
297	.mode_fixup = vbox_crtc_mode_fixup,
298	.mode_set = vbox_crtc_mode_set,
299	/* .mode_set_base = vbox_crtc_mode_set_base, */
300	.disable = vbox_crtc_disable,
301	.load_lut = vbox_crtc_load_lut,
302	.prepare = vbox_crtc_prepare,
303	.commit = vbox_crtc_commit,
304
305	};
306
307	static void vbox_crtc_reset(struct drm_crtc *crtc)
308	{
309
310	}
311
312
313	static void vbox_crtc_destroy(struct drm_crtc *crtc)
314	{
315	drm_crtc_cleanup(crtc);
316	kfree(crtc);
317	}
318
319	static const struct drm_crtc_funcs vbox_crtc_funcs = {
320	.cursor_move = vbox_cursor_move,
321	#ifdef DRM_IOCTL_MODE_CURSOR2
322	.cursor_set2 = vbox_cursor_set2,
323	#endif
324	.reset = vbox_crtc_reset,
325	.set_config = drm_crtc_helper_set_config,
326	/* .gamma_set = vbox_crtc_gamma_set, */
327	.destroy = vbox_crtc_destroy,
328	};
329
330	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned i)
331	{
332	struct vbox_crtc *vbox_crtc;
333
334	LogFunc(("vboxvideo: %d\n", __LINE__));
335	vbox_crtc = kzalloc(sizeof(struct vbox_crtc), GFP_KERNEL);
336	if (!vbox_crtc)
337	return NULL;
338	vbox_crtc->crtc_id = i;
339
340	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
341	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
342	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
343	LogFunc(("vboxvideo: %d: crtc=%p\n", __LINE__, vbox_crtc));
344
345	return vbox_crtc;
346	}
347
348	static void vbox_encoder_destroy(struct drm_encoder *encoder)
349	{
350	LogFunc(("vboxvideo: %d: encoder=%p\n", __LINE__, encoder));
351	drm_encoder_cleanup(encoder);
352	kfree(encoder);
353	}
354
355	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
356	static struct drm_encoder drm_encoder_find(struct drm_device dev, uint32_t id)
357	{
358	struct drm_mode_object *mo;
359	mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
360	return mo ? obj_to_encoder(mo) : NULL;
361	}
362	#endif
363
364	static struct drm_encoder vbox_best_single_encoder(struct drm_connector connector)
365	{
366	int enc_id = connector->encoder_ids[0];
367
368	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
369	/* pick the encoder ids */
370	if (enc_id)
371	return drm_encoder_find(connector->dev, enc_id);
372	LogFunc(("vboxvideo: %d\n", __LINE__));
373	return NULL;
374	}
375
376
377	static const struct drm_encoder_funcs vbox_enc_funcs = {
378	.destroy = vbox_encoder_destroy,
379	};
380
381	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
382	{
383
384	}
385
386	static bool vbox_mode_fixup(struct drm_encoder *encoder,
387	const struct drm_display_mode *mode,
388	struct drm_display_mode *adjusted_mode)
389	{
390	return true;
391	}
392
393	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
394	struct drm_display_mode *mode,
395	struct drm_display_mode *adjusted_mode)
396	{
397	}
398
399	static void vbox_encoder_prepare(struct drm_encoder *encoder)
400	{
401
402	}
403
404	static void vbox_encoder_commit(struct drm_encoder *encoder)
405	{
406
407	}
408
409
410	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
411	.dpms = vbox_encoder_dpms,
412	.mode_fixup = vbox_mode_fixup,
413	.prepare = vbox_encoder_prepare,
414	.commit = vbox_encoder_commit,
415	.mode_set = vbox_encoder_mode_set,
416	};
417
418	static struct drm_encoder vbox_encoder_init(struct drm_device dev, unsigned i)
419	{
420	struct vbox_encoder *vbox_encoder;
421
422	LogFunc(("vboxvideo: %d: dev=%d\n", __LINE__));
423	vbox_encoder = kzalloc(sizeof(struct vbox_encoder), GFP_KERNEL);
424	if (!vbox_encoder)
425	return NULL;
426
427	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
428	DRM_MODE_ENCODER_DAC
429	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)
430	, NULL
431	#endif
432	);
433	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
434
435	vbox_encoder->base.possible_crtcs = 1 << i;
436	LogFunc(("vboxvideo: %d: vbox_encoder=%p\n", __LINE__, vbox_encoder));
437	return &vbox_encoder->base;
438	}
439
440	static int vbox_get_modes(struct drm_connector *connector)
441	{
442	struct vbox_connector *vbox_connector = NULL;
443	struct drm_display_mode *mode = NULL;
444	struct vbox_private *vbox = NULL;
445	unsigned num_modes = 0;
446	int preferred_width, preferred_height;
447
448	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
449	vbox_connector = to_vbox_connector(connector);
450	vbox = connector->dev->dev_private;
451	if (!vbox->fbdev_init)
452	return drm_add_modes_noedid(connector, 800, 600);
453	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
454	preferred_width = vbox_connector->mode_hint.width ? vbox_connector->mode_hint.width : 1024;
455	preferred_height = vbox_connector->mode_hint.height ? vbox_connector->mode_hint.height : 768;
456	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 60, false,
457	false, false);
458	if (mode)
459	{
460	mode->type \|= DRM_MODE_TYPE_PREFERRED;
461	drm_mode_probed_add(connector, mode);
462	++num_modes;
463	}
464	return num_modes;
465	}
466
467	static int vbox_mode_valid(struct drm_connector *connector,
468	struct drm_display_mode *mode)
469	{
470	return MODE_OK;
471	}
472
473	static void vbox_connector_destroy(struct drm_connector *connector)
474	{
475	struct vbox_connector *vbox_connector = NULL;
476
477	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
478	vbox_connector = to_vbox_connector(connector);
479	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
480	drm_sysfs_connector_remove(connector);
481	#else
482	drm_connector_unregister(connector);
483	#endif
484	drm_connector_cleanup(connector);
485	kfree(connector);
486	}
487
488	static enum drm_connector_status
489	vbox_connector_detect(struct drm_connector *connector, bool force)
490	{
491	struct vbox_connector *vbox_connector = NULL;
492
493	(void) force;
494	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
495	vbox_connector = to_vbox_connector(connector);
496	return vbox_connector->mode_hint.disconnected ?
497	connector_status_disconnected : connector_status_connected;
498	}
499
500	static int vbox_fill_modes(struct drm_connector *connector, uint32_t max_x, uint32_t max_y)
501	{
502	struct vbox_connector *vbox_connector;
503	struct drm_device *dev;
504	struct drm_display_mode mode, iterator;
505
506	LogFunc(("vboxvideo: %d: connector=%p, max_x=%lu, max_y = %lu\n", __LINE__,
507	connector, (unsigned long)max_x, (unsigned long)max_y));
508	vbox_connector = to_vbox_connector(connector);
509	dev = vbox_connector->base.dev;
510	list_for_each_entry_safe(mode, iterator, &connector->modes, head)
511	{
512	list_del(&mode->head);
513	drm_mode_destroy(dev, mode);
514	}
515	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
516	}
517
518	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
519	.mode_valid = vbox_mode_valid,
520	.get_modes = vbox_get_modes,
521	.best_encoder = vbox_best_single_encoder,
522	};
523
524	static const struct drm_connector_funcs vbox_connector_funcs = {
525	.dpms = drm_helper_connector_dpms,
526	.detect = vbox_connector_detect,
527	.fill_modes = vbox_fill_modes,
528	.destroy = vbox_connector_destroy,
529	};
530
531	static int vbox_connector_init(struct drm_device *dev,
532	struct vbox_crtc *vbox_crtc,
533	struct drm_encoder *encoder)
534	{
535	struct vbox_connector *vbox_connector;
536	struct drm_connector *connector;
537
538	LogFunc(("vboxvideo: %d: dev=%p, encoder=%p\n", __LINE__, dev,
539	encoder));
540	vbox_connector = kzalloc(sizeof(struct vbox_connector), GFP_KERNEL);
541	if (!vbox_connector)
542	return -ENOMEM;
543
544	connector = &vbox_connector->base;
545	vbox_connector->vbox_crtc = vbox_crtc;
546
547	drm_connector_init(dev, connector, &vbox_connector_funcs,
548	DRM_MODE_CONNECTOR_VGA);
549	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
550
551	connector->interlace_allowed = 0;
552	connector->doublescan_allowed = 0;
553
554	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
555	drm_mode_create_suggested_offset_properties(dev);
556	drm_object_attach_property(&connector->base,
557	dev->mode_config.suggested_x_property, 0);
558	drm_object_attach_property(&connector->base,
559	dev->mode_config.suggested_y_property, 0);
560	#endif
561	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
562	drm_sysfs_connector_add(connector);
563	#else
564	drm_connector_register(connector);
565	#endif
566
567	drm_mode_connector_attach_encoder(connector, encoder);
568
569	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
570	return 0;
571	}
572
573	int vbox_mode_init(struct drm_device *dev)
574	{
575	struct vbox_private *vbox = dev->dev_private;
576	struct drm_encoder *encoder;
577	struct vbox_crtc *vbox_crtc;
578	unsigned i;
579	/* vbox_cursor_init(dev); */
580	LogFunc(("vboxvideo: %d: dev=%p\n", __LINE__, dev));
581	for (i = 0; i < vbox->num_crtcs; ++i)
582	{
583	vbox_crtc = vbox_crtc_init(dev, i);
584	if (!vbox_crtc)
585	return -ENOMEM;
586	encoder = vbox_encoder_init(dev, i);
587	if (!encoder)
588	return -ENOMEM;
589	vbox_connector_init(dev, vbox_crtc, 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
605	LogFunc(("vboxvideo: %d\n", __LINE__));
606	mutex_lock(&vbox->hw_mutex);
607	list_for_each_entry(crtci, &dev->mode_config.crtc_list, head)
608	vbox_do_modeset(crtci, &crtci->hwmode);
609	mutex_unlock(&vbox->hw_mutex);
610	LogFunc(("vboxvideo: %d\n", __LINE__));
611	}
612
613
614	/** Copy the ARGB image and generate the mask, which is needed in case the host
615	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
616	* if the corresponding alpha value in the ARGB image is greater than 0xF0. */
617	static void copy_cursor_image(u8 src, u8 dst, int width, int height,
618	size_t mask_size)
619	{
620	unsigned i, j;
621	size_t line_size = (width + 7) / 8;
622
623	memcpy(dst + mask_size, src, width * height * 4);
624	for (i = 0; i < height; ++i)
625	for (j = 0; j < width; ++j)
626	if (((uint32_t )src)[i width + j] > 0xf0000000)
627	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
628	}
629
630	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
631	uint32_t handle, uint32_t width, uint32_t height,
632	int32_t hot_x, int32_t hot_y)
633	{
634	struct vbox_private *vbox = crtc->dev->dev_private;
635	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
636	struct drm_gem_object *obj;
637	struct vbox_bo *bo;
638	int ret, rc;
639	struct ttm_bo_kmap_obj uobj_map;
640	u8 *src;
641	u8 *dst = NULL;
642	u32 caps = 0;
643	size_t data_size, mask_size;
644	bool src_isiomem;
645
646	if (!handle) {
647	bool cursor_enabled = false;
648	struct drm_crtc *crtci;
649
650	/* Hide cursor. */
651	vbox_crtc->cursor_enabled = false;
652	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head)
653	if (to_vbox_crtc(crtci)->cursor_enabled)
654	cursor_enabled = true;
655	if (!cursor_enabled)
656	VBoxHGSMIUpdatePointerShape(&vbox->submit_info, 0, 0, 0, 0, 0, NULL, 0);
657	return 0;
658	}
659	vbox_crtc->cursor_enabled = true;
660	if ( width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT
661	\|\| width == 0 \|\| hot_x > width \|\| height == 0 \|\| hot_y > height)
662	return -EINVAL;
663	rc = VBoxQueryConfHGSMI(&vbox->submit_info,
664	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
665	ret = -RTErrConvertToErrno(rc);
666	if (ret)
667	return ret;
668	if ( caps & VMMDEV_MOUSE_HOST_CANNOT_HWPOINTER
669	\|\| !(caps & VMMDEV_MOUSE_HOST_WANTS_ABSOLUTE))
670	return -EINVAL;
671
672	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
673	if (obj)
674	{
675	bo = gem_to_vbox_bo(obj);
676	ret = vbox_bo_reserve(bo, false);
677	if (!ret)
678	{
679	/* The mask must be calculated based on the alpha channel, one bit
680	* per ARGB word, and must be 32-bit padded. */
681	mask_size = ((width + 7) / 8 * height + 3) & ~3;
682	data_size = width * height * 4 + mask_size;
683	dst = kmalloc(data_size, GFP_KERNEL);
684	if (dst)
685	{
686	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
687	if (!ret)
688	{
689	src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
690	if (!src_isiomem)
691	{
692	uint32_t flags = VBOX_MOUSE_POINTER_VISIBLE
693	\| VBOX_MOUSE_POINTER_SHAPE
694	\| VBOX_MOUSE_POINTER_ALPHA;
695	copy_cursor_image(src, dst, width, height, mask_size);
696	rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags,
697	hot_x, hot_y, width,
698	height, dst, data_size);
699	ret = -RTErrConvertToErrno(rc);
700	}
701	else
702	DRM_ERROR("src cursor bo should be in main memory\n");
703	ttm_bo_kunmap(&uobj_map);
704	}
705	kfree(dst);
706	}
707	vbox_bo_unreserve(bo);
708	}
709	drm_gem_object_unreference_unlocked(obj);
710	}
711	else
712	{
713	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
714	ret = -ENOENT;
715	}
716	return ret;
717	}
718
719	static int vbox_cursor_move(struct drm_crtc *crtc,
720	int x, int y)
721	{
722	struct vbox_private *vbox = crtc->dev->dev_private;
723
724	VBoxHGSMICursorPosition(&vbox->submit_info, true, x + crtc->x,
725	y + crtc->y, NULL, NULL);
726	return 0;
727	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 60290

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