vbox_mode.c@ 65615

Last change on this file since 65615 was 65381, checked in by vboxsync, 8 years ago
bugref:8282: Additions/linux: submit DRM driver to the Linux kernel: move all graphics device-related header files to a separate sub-directory and add that to the include path where they are needed. The intention is too be able to remove the VBox/ include folder in the DRM driver package.
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File size: 30.3 KB

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1	/* $Id: vbox_mode.c 65381 2017-01-20 09:23:53Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013-2016 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 <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	int32_t x_offset, y_offset;
77
78	vbox = crtc->dev->dev_private;
79	width = mode->hdisplay ? mode->hdisplay : 640;
80	height = mode->vdisplay ? mode->vdisplay : 480;
81	crtc_id = vbox_crtc->crtc_id;
82	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
83	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0)
84	pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * bpp / 8;
85	#else
86	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
87	#endif
88	x_offset = vbox->single_framebuffer ? crtc->x : vbox_crtc->x_hint;
89	y_offset = vbox->single_framebuffer ? crtc->y : vbox_crtc->y_hint;
90	/* This is the old way of setting graphics modes. It assumed one screen
91	* and a frame-buffer at the start of video RAM. On older versions of
92	* VirtualBox, certain parts of the code still assume that the first
93	* screen is programmed this way, so try to fake it. */
94	if ( vbox_crtc->crtc_id == 0
95	&& crtc->enabled
96	&& vbox_crtc->fb_offset / pitch < 0xffff - crtc->y
97	&& vbox_crtc->fb_offset % (bpp / 8) == 0)
98	VBoxVideoSetModeRegisters(width, height, pitch * 8 / bpp,
99	CRTC_FB(crtc)->bits_per_pixel, 0,
100	vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x,
101	vbox_crtc->fb_offset / pitch + crtc->y);
102	flags = VBVA_SCREEN_F_ACTIVE;
103	flags \|= (crtc->enabled && !vbox_crtc->blanked ? 0 : VBVA_SCREEN_F_BLANK);
104	flags \|= (vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0);
105	VBoxHGSMIProcessDisplayInfo(&vbox->submit_info, vbox_crtc->crtc_id,
106	x_offset, y_offset,
107	crtc->x * bpp / 8 + crtc->y * pitch,
108	pitch, width, height,
109	vbox_crtc->blanked ? 0 : bpp, flags);
110	}
111
112	static int vbox_set_view(struct drm_crtc *crtc)
113	{
114	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
115	struct vbox_private *vbox = crtc->dev->dev_private;
116	void *p;
117
118	/* Tell the host about the view. This design originally targeted the
119	* Windows XP driver architecture and assumed that each screen would have
120	* a dedicated frame buffer with the command buffer following it, the whole
121	* being a "view". The host works out which screen a command buffer belongs
122	* to by checking whether it is in the first view, then whether it is in the
123	* second and so on. The first match wins. We cheat around this by making
124	* the first view be the managed memory plus the first command buffer, the
125	* second the same plus the second buffer and so on. */
126	p = VBoxHGSMIBufferAlloc(&vbox->submit_info, sizeof(VBVAINFOVIEW), HGSMI_CH_VBVA,
127	VBVA_INFO_VIEW);
128	if (p)
129	{
130	VBVAINFOVIEW pInfo = (VBVAINFOVIEW )p;
131	pInfo->u32ViewIndex = vbox_crtc->crtc_id;
132	pInfo->u32ViewOffset = vbox_crtc->fb_offset;
133	pInfo->u32ViewSize = vbox->available_vram_size - vbox_crtc->fb_offset
134	+ vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
135	pInfo->u32MaxScreenSize = vbox->available_vram_size - vbox_crtc->fb_offset;
136	VBoxHGSMIBufferSubmit(&vbox->submit_info, p);
137	VBoxHGSMIBufferFree(&vbox->submit_info, p);
138	}
139	else
140	return -ENOMEM;
141	return 0;
142	}
143
144	static void vbox_crtc_load_lut(struct drm_crtc *crtc)
145	{
146
147	}
148
149	static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
150	{
151	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
152	struct vbox_private *vbox = crtc->dev->dev_private;
153
154	switch (mode) {
155	case DRM_MODE_DPMS_ON:
156	vbox_crtc->blanked = false;
157	break;
158	case DRM_MODE_DPMS_STANDBY:
159	case DRM_MODE_DPMS_SUSPEND:
160	case DRM_MODE_DPMS_OFF:
161	vbox_crtc->blanked = true;
162	break;
163	}
164	mutex_lock(&vbox->hw_mutex);
165	vbox_do_modeset(crtc, &crtc->hwmode);
166	mutex_unlock(&vbox->hw_mutex);
167	}
168
169	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
170	const struct drm_display_mode *mode,
171	struct drm_display_mode *adjusted_mode)
172	{
173	return true;
174	}
175
176	/* Try to map the layout of virtual screens to the range of the input device.
177	* Return true if we need to re-set the crtc modes due to screen offset
178	* changes. */
179	static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
180	{
181	struct drm_crtc *crtci;
182	struct drm_connector *connectori;
183	struct drm_framebuffer *fb1 = NULL;
184	bool single_framebuffer = true;
185	bool old_single_framebuffer = vbox->single_framebuffer;
186	uint16_t width = 0, height = 0;
187
188	/* Are we using an X.Org-style single large frame-buffer for all crtcs?
189	* If so then screen layout can be deduced from the crtc offsets.
190	* Same fall-back if this is the fbdev frame-buffer. */
191	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
192	if (fb1 == NULL) {
193	fb1 = CRTC_FB(crtci);
194	if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
195	break;
196	} else if (CRTC_FB(crtci) != NULL && fb1 != CRTC_FB(crtci))
197	single_framebuffer = false;
198	}
199	if (single_framebuffer) {
200	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
201	if (to_vbox_crtc(crtci)->crtc_id == 0) {
202	vbox->single_framebuffer = true;
203	vbox->input_mapping_width = CRTC_FB(crtci)->width;
204	vbox->input_mapping_height = CRTC_FB(crtci)->height;
205	return old_single_framebuffer != vbox->single_framebuffer;
206	}
207	}
208	}
209	/* Otherwise calculate the total span of all screens. */
210	list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list,
211	head) {
212	struct vbox_connector *vbox_connector = to_vbox_connector(connectori);
213	struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
214
215	width = max(width, (uint16_t) (vbox_crtc->x_hint +
216	vbox_connector->mode_hint.width));
217	height = max(height, (uint16_t) (vbox_crtc->y_hint +
218	vbox_connector->mode_hint.height));
219	}
220	vbox->single_framebuffer = false;
221	vbox->input_mapping_width = width;
222	vbox->input_mapping_height = height;
223	return old_single_framebuffer != vbox->single_framebuffer;
224	}
225
226	static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
227	struct drm_framebuffer *old_fb,
228	int x, int y)
229	{
230	struct vbox_private *vbox = crtc->dev->dev_private;
231	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
232	struct drm_gem_object *obj;
233	struct vbox_framebuffer *vbox_fb;
234	struct vbox_bo *bo;
235	int ret;
236	u64 gpu_addr;
237
238	/* Unpin the previous fb. */
239	if (old_fb) {
240	vbox_fb = to_vbox_framebuffer(old_fb);
241	obj = vbox_fb->obj;
242	bo = gem_to_vbox_bo(obj);
243	ret = vbox_bo_reserve(bo, false);
244	if (ret)
245	return ret;
246	vbox_bo_unpin(bo);
247	vbox_bo_unreserve(bo);
248	}
249
250	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
251	obj = vbox_fb->obj;
252	bo = gem_to_vbox_bo(obj);
253
254	ret = vbox_bo_reserve(bo, false);
255	if (ret)
256	return ret;
257
258	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
259	if (ret) {
260	vbox_bo_unreserve(bo);
261	return ret;
262	}
263
264	if (&vbox->fbdev->afb == vbox_fb)
265	vbox_fbdev_set_base(vbox, gpu_addr);
266	vbox_bo_unreserve(bo);
267
268	/* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
269	vbox_crtc->fb_offset = gpu_addr;
270	if (vbox_set_up_input_mapping(vbox)) {
271	struct drm_crtc *crtci;
272
273	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
274	vbox_set_view(crtc);
275	vbox_do_modeset(crtci, &crtci->mode);
276	}
277	}
278	return 0;
279	}
280
281	static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
282	struct drm_framebuffer *old_fb)
283	{
284	return vbox_crtc_do_set_base(crtc, old_fb, x, y);
285	}
286
287	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
288	struct drm_display_mode *mode,
289	struct drm_display_mode *adjusted_mode,
290	int x, int y,
291	struct drm_framebuffer *old_fb)
292	{
293	struct vbox_private *vbox = crtc->dev->dev_private;
294	int rc = 0;
295
296	vbox_crtc_mode_set_base(crtc, x, y, old_fb);
297	mutex_lock(&vbox->hw_mutex);
298	rc = vbox_set_view(crtc);
299	if (!rc)
300	vbox_do_modeset(crtc, mode);
301	VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
302	vbox->input_mapping_width,
303	vbox->input_mapping_height);
304	mutex_unlock(&vbox->hw_mutex);
305	return rc;
306	}
307
308	static void vbox_crtc_disable(struct drm_crtc *crtc)
309	{
310
311	}
312
313	static void vbox_crtc_prepare(struct drm_crtc *crtc)
314	{
315
316	}
317
318	static void vbox_crtc_commit(struct drm_crtc *crtc)
319	{
320
321	}
322
323
324	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
325	.dpms = vbox_crtc_dpms,
326	.mode_fixup = vbox_crtc_mode_fixup,
327	.mode_set = vbox_crtc_mode_set,
328	/* .mode_set_base = vbox_crtc_mode_set_base, */
329	.disable = vbox_crtc_disable,
330	.load_lut = vbox_crtc_load_lut,
331	.prepare = vbox_crtc_prepare,
332	.commit = vbox_crtc_commit,
333
334	};
335
336	static void vbox_crtc_reset(struct drm_crtc *crtc)
337	{
338
339	}
340
341
342	static void vbox_crtc_destroy(struct drm_crtc *crtc)
343	{
344	drm_crtc_cleanup(crtc);
345	kfree(crtc);
346	}
347
348	static const struct drm_crtc_funcs vbox_crtc_funcs = {
349	.cursor_move = vbox_cursor_move,
350	.cursor_set2 = vbox_cursor_set2,
351	.reset = vbox_crtc_reset,
352	.set_config = drm_crtc_helper_set_config,
353	/* .gamma_set = vbox_crtc_gamma_set, */
354	.destroy = vbox_crtc_destroy,
355	};
356
357	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned i)
358	{
359	struct vbox_crtc *vbox_crtc;
360
361	vbox_crtc = kzalloc(sizeof(struct vbox_crtc), GFP_KERNEL);
362	if (!vbox_crtc)
363	return NULL;
364	vbox_crtc->crtc_id = i;
365
366	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
367	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
368	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
369
370	return vbox_crtc;
371	}
372
373	static void vbox_encoder_destroy(struct drm_encoder *encoder)
374	{
375	drm_encoder_cleanup(encoder);
376	kfree(encoder);
377	}
378
379	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
380	static struct drm_encoder drm_encoder_find(struct drm_device dev, uint32_t id)
381	{
382	struct drm_mode_object *mo;
383	mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
384	return mo ? obj_to_encoder(mo) : NULL;
385	}
386	#endif
387
388	static struct drm_encoder vbox_best_single_encoder(struct drm_connector connector)
389	{
390	int enc_id = connector->encoder_ids[0];
391
392	/* pick the encoder ids */
393	if (enc_id)
394	return drm_encoder_find(connector->dev, enc_id);
395	return NULL;
396	}
397
398
399	static const struct drm_encoder_funcs vbox_enc_funcs = {
400	.destroy = vbox_encoder_destroy,
401	};
402
403	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
404	{
405
406	}
407
408	static bool vbox_mode_fixup(struct drm_encoder *encoder,
409	const struct drm_display_mode *mode,
410	struct drm_display_mode *adjusted_mode)
411	{
412	return true;
413	}
414
415	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
416	struct drm_display_mode *mode,
417	struct drm_display_mode *adjusted_mode)
418	{
419	}
420
421	static void vbox_encoder_prepare(struct drm_encoder *encoder)
422	{
423
424	}
425
426	static void vbox_encoder_commit(struct drm_encoder *encoder)
427	{
428
429	}
430
431
432	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
433	.dpms = vbox_encoder_dpms,
434	.mode_fixup = vbox_mode_fixup,
435	.prepare = vbox_encoder_prepare,
436	.commit = vbox_encoder_commit,
437	.mode_set = vbox_encoder_mode_set,
438	};
439
440	static struct drm_encoder vbox_encoder_init(struct drm_device dev, unsigned i)
441	{
442	struct vbox_encoder *vbox_encoder;
443
444	vbox_encoder = kzalloc(sizeof(struct vbox_encoder), GFP_KERNEL);
445	if (!vbox_encoder)
446	return NULL;
447
448	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
449	DRM_MODE_ENCODER_DAC
450	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)
451	, NULL
452	#endif
453	);
454	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
455
456	vbox_encoder->base.possible_crtcs = 1 << i;
457	return &vbox_encoder->base;
458	}
459
460	/** Generate EDID data with a mode-unique serial number for the virtual
461	* monitor to try to persuade Unity that different modes correspond to
462	* different monitors and it should not try to force the same resolution on
463	* them. */
464	static void vbox_set_edid(struct drm_connector *connector, int width,
465	int height)
466	{
467	enum { EDID_SIZE = 128 };
468	unsigned char edid[EDID_SIZE] = {
469	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
470	0x58, 0x58, /* manufacturer (VBX) */
471	0x00, 0x00, /* product code */
472	0x00, 0x00,0x00, 0x00, /* serial number goes here */
473	0x01, /* week of manufacture */
474	0x00, /* year of manufacture */
475	0x01, 0x03, /* EDID version */
476	0x80, /* capabilities - digital */
477	0x00, /* horiz. res in cm, zero for projectors */
478	0x00, /* vert. res in cm */
479	0x78, /* display gamma (120 == 2.2). */
480	0xEE, /* features (standby, suspend, off, RGB, standard colour space,
481	* preferred timing mode) */
482	0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
483	/* chromaticity for standard colour space. */
484	0x00, 0x00, 0x00, /* no default timings */
485	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
486	0x01, 0x01, 0x01, 0x01, /* no standard timings */
487	0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02, 0x02, 0x02,
488	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* descriptor block 1 goes here */
489	0x00, 0x00, 0x00, 0xFD, 0x00, /* descriptor block 2, monitor ranges */
490	0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
491	0x20, /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
492	0x00, 0x00, 0x00, 0xFC, 0x00, /* descriptor block 3, monitor name */
493	'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r', '\n',
494	0x00, 0x00, 0x00, 0x10, 0x00, /* descriptor block 4: dummy data */
495	0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
496	0x20,
497	0x00, /* number of extensions */
498	0x00 /* checksum goes here */
499	};
500	int clock = (width + 6) * (height + 6) * 60 / 10000;
501	unsigned i;
502	unsigned sum = 0;
503
504	edid[12] = width & 0xff;
505	edid[13] = width >> 8;
506	edid[14] = height & 0xff;
507	edid[15] = height >> 8;
508	edid[54] = clock & 0xff;
509	edid[55] = clock >> 8;
510	edid[56] = width & 0xff;
511	edid[58] = (width >> 4) & 0xf0;
512	edid[59] = height & 0xff;
513	edid[61] = (height >> 4) & 0xf0;
514	for (i = 0; i < EDID_SIZE - 1; ++i)
515	sum += edid[i];
516	edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
517	drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
518	}
519
520	static int vbox_get_modes(struct drm_connector *connector)
521	{
522	struct vbox_connector *vbox_connector = NULL;
523	struct drm_display_mode *mode = NULL;
524	struct vbox_private *vbox = NULL;
525	unsigned num_modes = 0;
526	int preferred_width, preferred_height;
527
528	vbox_connector = to_vbox_connector(connector);
529	vbox = connector->dev->dev_private;
530	/* Heuristic: we do not want to tell the host that we support dynamic
531	* resizing unless we feel confident that the user space client using
532	* the video driver can handle hot-plug events. So the first time modes
533	* are queried after a "master" switch we tell the host that we do not,
534	* and immediately after we send the client a hot-plug notification as
535	* a test to see if they will respond and query again.
536	* That is also the reason why capabilities are reported to the host at
537	* this place in the code rather than elsewhere.
538	* We need to report the flags location before reporting the IRQ
539	* capability. */
540	VBoxHGSMIReportFlagsLocation(&vbox->submit_info, vbox->vram_map_start
541	+ vbox->host_flags_offset);
542	if (vbox_connector->vbox_crtc->crtc_id == 0)
543	vbox_report_caps(vbox);
544	if (!vbox->initial_mode_queried) {
545	if (vbox_connector->vbox_crtc->crtc_id == 0) {
546	vbox->initial_mode_queried = true;
547	vbox_report_hotplug(vbox);
548	}
549	return drm_add_modes_noedid(connector, 800, 600);
550	}
551	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
552	preferred_width = vbox_connector->mode_hint.width ? vbox_connector->mode_hint.width : 1024;
553	preferred_height = vbox_connector->mode_hint.height ? vbox_connector->mode_hint.height : 768;
554	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 60, false,
555	false, false);
556	if (mode)
557	{
558	mode->type \|= DRM_MODE_TYPE_PREFERRED;
559	drm_mode_probed_add(connector, mode);
560	++num_modes;
561	}
562	vbox_set_edid(connector, preferred_width, preferred_height);
563	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
564	drm_object_property_set_value(&connector->base,
565	vbox->dev->mode_config.suggested_x_property,
566	vbox_connector->vbox_crtc->x_hint);
567	drm_object_property_set_value(&connector->base,
568	vbox->dev->mode_config.suggested_y_property,
569	vbox_connector->vbox_crtc->y_hint);
570	#endif
571	return num_modes;
572	}
573
574	static int vbox_mode_valid(struct drm_connector *connector,
575	struct drm_display_mode *mode)
576	{
577	return MODE_OK;
578	}
579
580	static void vbox_connector_destroy(struct drm_connector *connector)
581	{
582	struct vbox_connector *vbox_connector = NULL;
583
584	vbox_connector = to_vbox_connector(connector);
585	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
586	drm_sysfs_connector_remove(connector);
587	#else
588	drm_connector_unregister(connector);
589	#endif
590	drm_connector_cleanup(connector);
591	kfree(connector);
592	}
593
594	static enum drm_connector_status
595	vbox_connector_detect(struct drm_connector *connector, bool force)
596	{
597	struct vbox_connector *vbox_connector = NULL;
598
599	(void) force;
600	vbox_connector = to_vbox_connector(connector);
601	return vbox_connector->mode_hint.disconnected ?
602	connector_status_disconnected : connector_status_connected;
603	}
604
605	static int vbox_fill_modes(struct drm_connector *connector, uint32_t max_x, uint32_t max_y)
606	{
607	struct vbox_connector *vbox_connector;
608	struct drm_device *dev;
609	struct drm_display_mode mode, iterator;
610
611	vbox_connector = to_vbox_connector(connector);
612	dev = vbox_connector->base.dev;
613	list_for_each_entry_safe(mode, iterator, &connector->modes, head)
614	{
615	list_del(&mode->head);
616	drm_mode_destroy(dev, mode);
617	}
618	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
619	}
620
621	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
622	.mode_valid = vbox_mode_valid,
623	.get_modes = vbox_get_modes,
624	.best_encoder = vbox_best_single_encoder,
625	};
626
627	static const struct drm_connector_funcs vbox_connector_funcs = {
628	.dpms = drm_helper_connector_dpms,
629	.detect = vbox_connector_detect,
630	.fill_modes = vbox_fill_modes,
631	.destroy = vbox_connector_destroy,
632	};
633
634	static int vbox_connector_init(struct drm_device *dev,
635	struct vbox_crtc *vbox_crtc,
636	struct drm_encoder *encoder)
637	{
638	struct vbox_connector *vbox_connector;
639	struct drm_connector *connector;
640
641	vbox_connector = kzalloc(sizeof(struct vbox_connector), GFP_KERNEL);
642	if (!vbox_connector)
643	return -ENOMEM;
644
645	connector = &vbox_connector->base;
646	vbox_connector->vbox_crtc = vbox_crtc;
647
648	drm_connector_init(dev, connector, &vbox_connector_funcs,
649	DRM_MODE_CONNECTOR_VGA);
650	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
651
652	connector->interlace_allowed = 0;
653	connector->doublescan_allowed = 0;
654
655	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
656	drm_mode_create_suggested_offset_properties(dev);
657	drm_object_attach_property(&connector->base,
658	dev->mode_config.suggested_x_property, -1);
659	drm_object_attach_property(&connector->base,
660	dev->mode_config.suggested_y_property, -1);
661	#endif
662	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
663	drm_sysfs_connector_add(connector);
664	#else
665	drm_connector_register(connector);
666	#endif
667
668	drm_mode_connector_attach_encoder(connector, encoder);
669
670	return 0;
671	}
672
673	int vbox_mode_init(struct drm_device *dev)
674	{
675	struct vbox_private *vbox = dev->dev_private;
676	struct drm_encoder *encoder;
677	struct vbox_crtc *vbox_crtc;
678	unsigned i;
679	/* vbox_cursor_init(dev); */
680	for (i = 0; i < vbox->num_crtcs; ++i)
681	{
682	vbox_crtc = vbox_crtc_init(dev, i);
683	if (!vbox_crtc)
684	return -ENOMEM;
685	encoder = vbox_encoder_init(dev, i);
686	if (!encoder)
687	return -ENOMEM;
688	vbox_connector_init(dev, vbox_crtc, encoder);
689	}
690	return 0;
691	}
692
693	void vbox_mode_fini(struct drm_device *dev)
694	{
695	/* vbox_cursor_fini(dev); */
696	}
697
698
699	/** Copy the ARGB image and generate the mask, which is needed in case the host
700	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
701	* if the corresponding alpha value in the ARGB image is greater than 0xF0. */
702	static void copy_cursor_image(u8 src, u8 dst, int width, int height,
703	size_t mask_size)
704	{
705	unsigned i, j;
706	size_t line_size = (width + 7) / 8;
707
708	memcpy(dst + mask_size, src, width * height * 4);
709	for (i = 0; i < height; ++i)
710	for (j = 0; j < width; ++j)
711	if (((uint32_t )src)[i width + j] > 0xf0000000)
712	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
713	}
714
715	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
716	uint32_t handle, uint32_t width, uint32_t height,
717	int32_t hot_x, int32_t hot_y)
718	{
719	struct vbox_private *vbox = crtc->dev->dev_private;
720	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
721	struct drm_gem_object *obj;
722	struct vbox_bo *bo;
723	int ret, rc;
724	struct ttm_bo_kmap_obj uobj_map;
725	u8 *src;
726	u8 *dst = NULL;
727	u32 caps = 0;
728	size_t data_size, mask_size;
729	bool src_isiomem;
730
731	/* Re-set this regularly as in 5.0.20 and earlier the information was lost
732	* on save and restore. */
733	VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
734	vbox->input_mapping_width,
735	vbox->input_mapping_height);
736	if (!handle) {
737	bool cursor_enabled = false;
738	struct drm_crtc *crtci;
739
740	/* Hide cursor. */
741	vbox_crtc->cursor_enabled = false;
742	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head)
743	if (to_vbox_crtc(crtci)->cursor_enabled)
744	cursor_enabled = true;
745	if (!cursor_enabled)
746	VBoxHGSMIUpdatePointerShape(&vbox->submit_info, 0, 0, 0, 0, 0, NULL, 0);
747	return 0;
748	}
749	vbox_crtc->cursor_enabled = true;
750	if ( width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT
751	\|\| width == 0 \|\| height == 0)
752	return -EINVAL;
753	rc = VBoxQueryConfHGSMI(&vbox->submit_info,
754	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
755	ret = rc == VINF_SUCCESS ? 0 : rc == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
756	if (ret)
757	return ret;
758	if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE))
759	/* -EINVAL means cursor_set2() not supported, -EAGAIN means
760	* retry at once. */
761	return -EBUSY;
762
763	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)
764	obj = drm_gem_object_lookup(file_priv, handle);
765	#else
766	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
767	#endif
768	if (obj)
769	{
770	bo = gem_to_vbox_bo(obj);
771	ret = vbox_bo_reserve(bo, false);
772	if (!ret)
773	{
774	/* The mask must be calculated based on the alpha channel, one bit
775	* per ARGB word, and must be 32-bit padded. */
776	mask_size = ((width + 7) / 8 * height + 3) & ~3;
777	data_size = width * height * 4 + mask_size;
778	vbox->cursor_hot_x = min((uint32_t)max(hot_x, 0), width);
779	vbox->cursor_hot_y = min((uint32_t)max(hot_y, 0), height);
780	vbox->cursor_width = width;
781	vbox->cursor_height = height;
782	vbox->cursor_data_size = data_size;
783	dst = vbox->cursor_data;
784	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
785	if (!ret)
786	{
787	src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
788	if (!src_isiomem)
789	{
790	uint32_t flags = VBOX_MOUSE_POINTER_VISIBLE
791	\| VBOX_MOUSE_POINTER_SHAPE
792	\| VBOX_MOUSE_POINTER_ALPHA;
793	copy_cursor_image(src, dst, width, height, mask_size);
794	rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags,
795	vbox->cursor_hot_x,
796	vbox->cursor_hot_y,
797	width, height, dst,
798	data_size);
799	ret = rc == VINF_SUCCESS ? 0
800	: rc == VERR_NO_MEMORY ? -ENOMEM
801	: rc == VERR_NOT_SUPPORTED ? -EBUSY
802	: -EINVAL;
803	}
804	else
805	DRM_ERROR("src cursor bo should be in main memory\n");
806	ttm_bo_kunmap(&uobj_map);
807	}
808	else
809	vbox->cursor_data_size = 0;
810	vbox_bo_unreserve(bo);
811	}
812	drm_gem_object_unreference_unlocked(obj);
813	}
814	else
815	{
816	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
817	ret = -ENOENT;
818	}
819	return ret;
820	}
821
822	static int vbox_cursor_move(struct drm_crtc *crtc,
823	int x, int y)
824	{
825	struct vbox_private *vbox = crtc->dev->dev_private;
826	uint32_t flags = VBOX_MOUSE_POINTER_VISIBLE
827	\| VBOX_MOUSE_POINTER_SHAPE
828	\| VBOX_MOUSE_POINTER_ALPHA;
829	int32_t crtc_x = vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
830	int32_t crtc_y = vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
831	uint32_t host_x, host_y;
832	uint32_t hot_x = 0;
833	uint32_t hot_y = 0;
834	int rc;
835
836	/* We compare these to unsigned later and don't need to handle negative. */
837	if (x + crtc_x < 0 \|\| y + crtc_y < 0 \|\| vbox->cursor_data_size == 0)
838	return 0;
839	rc = VBoxHGSMICursorPosition(&vbox->submit_info, true, x + crtc_x,
840	y + crtc_y, &host_x, &host_y);
841	/* Work around a bug after save and restore in 5.0.20 and earlier. */
842	if (RT_FAILURE(rc) \|\| (host_x == 0 && host_y == 0))
843	return rc == VINF_SUCCESS ? 0
844	: rc == VERR_NO_MEMORY ? -ENOMEM
845	: -EINVAL;
846	if (x + crtc_x < host_x)
847	hot_x = min(host_x - x - crtc_x, vbox->cursor_width);
848	if (y + crtc_y < host_y)
849	hot_y = min(host_y - y - crtc_y, vbox->cursor_height);
850	if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
851	return 0;
852	vbox->cursor_hot_x = hot_x;
853	vbox->cursor_hot_y = hot_y;
854	rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags, hot_x, hot_y,
855	vbox->cursor_width, vbox->cursor_height,
856	vbox->cursor_data,
857	vbox->cursor_data_size);
858	return rc == VINF_SUCCESS ? 0
859	: rc == VERR_NO_MEMORY ? -ENOMEM
860	: rc == VERR_NOT_SUPPORTED ? -EBUSY
861	: -EINVAL;
862	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 65615

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