vbox_mode.c@ 66423

Last change on this file since 66423 was 65992, checked in by vboxsync, 8 years ago
Additions/linux: Linux 4.11 compile fixes
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File size: 30.8 KB

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1	/* $Id: vbox_mode.c 65992 2017-03-08 11:24:53Z 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	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
83	bpp = crtc->enabled ? CRTC_FB(crtc)->format->cpp[0] * 8 : 32;
84	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
85	#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3, 3, 0)
86	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
87	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
88	#else
89	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
90	pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * bpp / 8;
91	#endif
92	x_offset = vbox->single_framebuffer ? crtc->x : vbox_crtc->x_hint;
93	y_offset = vbox->single_framebuffer ? crtc->y : vbox_crtc->y_hint;
94	/* This is the old way of setting graphics modes. It assumed one screen
95	* and a frame-buffer at the start of video RAM. On older versions of
96	* VirtualBox, certain parts of the code still assume that the first
97	* screen is programmed this way, so try to fake it. */
98	if ( vbox_crtc->crtc_id == 0
99	&& crtc->enabled
100	&& vbox_crtc->fb_offset / pitch < 0xffff - crtc->y
101	&& vbox_crtc->fb_offset % (bpp / 8) == 0)
102	VBoxVideoSetModeRegisters(width, height, pitch * 8 / bpp,
103	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
104	CRTC_FB(crtc)->format->cpp[0] * 8,
105	#else
106	CRTC_FB(crtc)->bits_per_pixel,
107	#endif
108	0,
109	vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x,
110	vbox_crtc->fb_offset / pitch + crtc->y);
111	flags = VBVA_SCREEN_F_ACTIVE;
112	flags \|= (crtc->enabled && !vbox_crtc->blanked ? 0 : VBVA_SCREEN_F_BLANK);
113	flags \|= (vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0);
114	VBoxHGSMIProcessDisplayInfo(&vbox->submit_info, vbox_crtc->crtc_id,
115	x_offset, y_offset,
116	crtc->x * bpp / 8 + crtc->y * pitch,
117	pitch, width, height,
118	vbox_crtc->blanked ? 0 : bpp, flags);
119	}
120
121	static int vbox_set_view(struct drm_crtc *crtc)
122	{
123	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
124	struct vbox_private *vbox = crtc->dev->dev_private;
125	void *p;
126
127	/* Tell the host about the view. This design originally targeted the
128	* Windows XP driver architecture and assumed that each screen would have
129	* a dedicated frame buffer with the command buffer following it, the whole
130	* being a "view". The host works out which screen a command buffer belongs
131	* to by checking whether it is in the first view, then whether it is in the
132	* second and so on. The first match wins. We cheat around this by making
133	* the first view be the managed memory plus the first command buffer, the
134	* second the same plus the second buffer and so on. */
135	p = VBoxHGSMIBufferAlloc(&vbox->submit_info, sizeof(VBVAINFOVIEW), HGSMI_CH_VBVA,
136	VBVA_INFO_VIEW);
137	if (p)
138	{
139	VBVAINFOVIEW pInfo = (VBVAINFOVIEW )p;
140	pInfo->u32ViewIndex = vbox_crtc->crtc_id;
141	pInfo->u32ViewOffset = vbox_crtc->fb_offset;
142	pInfo->u32ViewSize = vbox->available_vram_size - vbox_crtc->fb_offset
143	+ vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
144	pInfo->u32MaxScreenSize = vbox->available_vram_size - vbox_crtc->fb_offset;
145	VBoxHGSMIBufferSubmit(&vbox->submit_info, p);
146	VBoxHGSMIBufferFree(&vbox->submit_info, p);
147	}
148	else
149	return -ENOMEM;
150	return 0;
151	}
152
153	static void vbox_crtc_load_lut(struct drm_crtc *crtc)
154	{
155
156	}
157
158	static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
159	{
160	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
161	struct vbox_private *vbox = crtc->dev->dev_private;
162
163	switch (mode) {
164	case DRM_MODE_DPMS_ON:
165	vbox_crtc->blanked = false;
166	break;
167	case DRM_MODE_DPMS_STANDBY:
168	case DRM_MODE_DPMS_SUSPEND:
169	case DRM_MODE_DPMS_OFF:
170	vbox_crtc->blanked = true;
171	break;
172	}
173	mutex_lock(&vbox->hw_mutex);
174	vbox_do_modeset(crtc, &crtc->hwmode);
175	mutex_unlock(&vbox->hw_mutex);
176	}
177
178	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
179	const struct drm_display_mode *mode,
180	struct drm_display_mode *adjusted_mode)
181	{
182	return true;
183	}
184
185	/* Try to map the layout of virtual screens to the range of the input device.
186	* Return true if we need to re-set the crtc modes due to screen offset
187	* changes. */
188	static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
189	{
190	struct drm_crtc *crtci;
191	struct drm_connector *connectori;
192	struct drm_framebuffer *fb1 = NULL;
193	bool single_framebuffer = true;
194	bool old_single_framebuffer = vbox->single_framebuffer;
195	uint16_t width = 0, height = 0;
196
197	/* Are we using an X.Org-style single large frame-buffer for all crtcs?
198	* If so then screen layout can be deduced from the crtc offsets.
199	* Same fall-back if this is the fbdev frame-buffer. */
200	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
201	if (fb1 == NULL) {
202	fb1 = CRTC_FB(crtci);
203	if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
204	break;
205	} else if (CRTC_FB(crtci) != NULL && fb1 != CRTC_FB(crtci))
206	single_framebuffer = false;
207	}
208	if (single_framebuffer) {
209	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
210	if (to_vbox_crtc(crtci)->crtc_id == 0) {
211	vbox->single_framebuffer = true;
212	vbox->input_mapping_width = CRTC_FB(crtci)->width;
213	vbox->input_mapping_height = CRTC_FB(crtci)->height;
214	return old_single_framebuffer != vbox->single_framebuffer;
215	}
216	}
217	}
218	/* Otherwise calculate the total span of all screens. */
219	list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list,
220	head) {
221	struct vbox_connector *vbox_connector = to_vbox_connector(connectori);
222	struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
223
224	width = max(width, (uint16_t) (vbox_crtc->x_hint +
225	vbox_connector->mode_hint.width));
226	height = max(height, (uint16_t) (vbox_crtc->y_hint +
227	vbox_connector->mode_hint.height));
228	}
229	vbox->single_framebuffer = false;
230	vbox->input_mapping_width = width;
231	vbox->input_mapping_height = height;
232	return old_single_framebuffer != vbox->single_framebuffer;
233	}
234
235	static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
236	struct drm_framebuffer *old_fb,
237	int x, int y)
238	{
239	struct vbox_private *vbox = crtc->dev->dev_private;
240	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
241	struct drm_gem_object *obj;
242	struct vbox_framebuffer *vbox_fb;
243	struct vbox_bo *bo;
244	int ret;
245	u64 gpu_addr;
246
247	/* Unpin the previous fb. */
248	if (old_fb) {
249	vbox_fb = to_vbox_framebuffer(old_fb);
250	obj = vbox_fb->obj;
251	bo = gem_to_vbox_bo(obj);
252	ret = vbox_bo_reserve(bo, false);
253	if (ret)
254	return ret;
255	vbox_bo_unpin(bo);
256	vbox_bo_unreserve(bo);
257	}
258
259	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
260	obj = vbox_fb->obj;
261	bo = gem_to_vbox_bo(obj);
262
263	ret = vbox_bo_reserve(bo, false);
264	if (ret)
265	return ret;
266
267	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
268	if (ret) {
269	vbox_bo_unreserve(bo);
270	return ret;
271	}
272
273	if (&vbox->fbdev->afb == vbox_fb)
274	vbox_fbdev_set_base(vbox, gpu_addr);
275	vbox_bo_unreserve(bo);
276
277	/* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
278	vbox_crtc->fb_offset = gpu_addr;
279	if (vbox_set_up_input_mapping(vbox)) {
280	struct drm_crtc *crtci;
281
282	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
283	vbox_set_view(crtc);
284	vbox_do_modeset(crtci, &crtci->mode);
285	}
286	}
287	return 0;
288	}
289
290	static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
291	struct drm_framebuffer *old_fb)
292	{
293	return vbox_crtc_do_set_base(crtc, old_fb, x, y);
294	}
295
296	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
297	struct drm_display_mode *mode,
298	struct drm_display_mode *adjusted_mode,
299	int x, int y,
300	struct drm_framebuffer *old_fb)
301	{
302	struct vbox_private *vbox = crtc->dev->dev_private;
303	int rc = 0;
304
305	vbox_crtc_mode_set_base(crtc, x, y, old_fb);
306	mutex_lock(&vbox->hw_mutex);
307	rc = vbox_set_view(crtc);
308	if (!rc)
309	vbox_do_modeset(crtc, mode);
310	VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
311	vbox->input_mapping_width,
312	vbox->input_mapping_height);
313	mutex_unlock(&vbox->hw_mutex);
314	return rc;
315	}
316
317	static void vbox_crtc_disable(struct drm_crtc *crtc)
318	{
319
320	}
321
322	static void vbox_crtc_prepare(struct drm_crtc *crtc)
323	{
324
325	}
326
327	static void vbox_crtc_commit(struct drm_crtc *crtc)
328	{
329
330	}
331
332
333	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
334	.dpms = vbox_crtc_dpms,
335	.mode_fixup = vbox_crtc_mode_fixup,
336	.mode_set = vbox_crtc_mode_set,
337	/* .mode_set_base = vbox_crtc_mode_set_base, */
338	.disable = vbox_crtc_disable,
339	.load_lut = vbox_crtc_load_lut,
340	.prepare = vbox_crtc_prepare,
341	.commit = vbox_crtc_commit,
342
343	};
344
345	static void vbox_crtc_reset(struct drm_crtc *crtc)
346	{
347
348	}
349
350
351	static void vbox_crtc_destroy(struct drm_crtc *crtc)
352	{
353	drm_crtc_cleanup(crtc);
354	kfree(crtc);
355	}
356
357	static const struct drm_crtc_funcs vbox_crtc_funcs = {
358	.cursor_move = vbox_cursor_move,
359	.cursor_set2 = vbox_cursor_set2,
360	.reset = vbox_crtc_reset,
361	.set_config = drm_crtc_helper_set_config,
362	/* .gamma_set = vbox_crtc_gamma_set, */
363	.destroy = vbox_crtc_destroy,
364	};
365
366	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned i)
367	{
368	struct vbox_crtc *vbox_crtc;
369
370	vbox_crtc = kzalloc(sizeof(struct vbox_crtc), GFP_KERNEL);
371	if (!vbox_crtc)
372	return NULL;
373	vbox_crtc->crtc_id = i;
374
375	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
376	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
377	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
378
379	return vbox_crtc;
380	}
381
382	static void vbox_encoder_destroy(struct drm_encoder *encoder)
383	{
384	drm_encoder_cleanup(encoder);
385	kfree(encoder);
386	}
387
388	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
389	static struct drm_encoder drm_encoder_find(struct drm_device dev, uint32_t id)
390	{
391	struct drm_mode_object *mo;
392	mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
393	return mo ? obj_to_encoder(mo) : NULL;
394	}
395	#endif
396
397	static struct drm_encoder vbox_best_single_encoder(struct drm_connector connector)
398	{
399	int enc_id = connector->encoder_ids[0];
400
401	/* pick the encoder ids */
402	if (enc_id)
403	return drm_encoder_find(connector->dev, enc_id);
404	return NULL;
405	}
406
407
408	static const struct drm_encoder_funcs vbox_enc_funcs = {
409	.destroy = vbox_encoder_destroy,
410	};
411
412	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
413	{
414
415	}
416
417	static bool vbox_mode_fixup(struct drm_encoder *encoder,
418	const struct drm_display_mode *mode,
419	struct drm_display_mode *adjusted_mode)
420	{
421	return true;
422	}
423
424	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
425	struct drm_display_mode *mode,
426	struct drm_display_mode *adjusted_mode)
427	{
428	}
429
430	static void vbox_encoder_prepare(struct drm_encoder *encoder)
431	{
432
433	}
434
435	static void vbox_encoder_commit(struct drm_encoder *encoder)
436	{
437
438	}
439
440
441	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
442	.dpms = vbox_encoder_dpms,
443	.mode_fixup = vbox_mode_fixup,
444	.prepare = vbox_encoder_prepare,
445	.commit = vbox_encoder_commit,
446	.mode_set = vbox_encoder_mode_set,
447	};
448
449	static struct drm_encoder vbox_encoder_init(struct drm_device dev, unsigned i)
450	{
451	struct vbox_encoder *vbox_encoder;
452
453	vbox_encoder = kzalloc(sizeof(struct vbox_encoder), GFP_KERNEL);
454	if (!vbox_encoder)
455	return NULL;
456
457	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
458	DRM_MODE_ENCODER_DAC
459	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)
460	, NULL
461	#endif
462	);
463	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
464
465	vbox_encoder->base.possible_crtcs = 1 << i;
466	return &vbox_encoder->base;
467	}
468
469	/** Generate EDID data with a mode-unique serial number for the virtual
470	* monitor to try to persuade Unity that different modes correspond to
471	* different monitors and it should not try to force the same resolution on
472	* them. */
473	static void vbox_set_edid(struct drm_connector *connector, int width,
474	int height)
475	{
476	enum { EDID_SIZE = 128 };
477	unsigned char edid[EDID_SIZE] = {
478	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
479	0x58, 0x58, /* manufacturer (VBX) */
480	0x00, 0x00, /* product code */
481	0x00, 0x00,0x00, 0x00, /* serial number goes here */
482	0x01, /* week of manufacture */
483	0x00, /* year of manufacture */
484	0x01, 0x03, /* EDID version */
485	0x80, /* capabilities - digital */
486	0x00, /* horiz. res in cm, zero for projectors */
487	0x00, /* vert. res in cm */
488	0x78, /* display gamma (120 == 2.2). */
489	0xEE, /* features (standby, suspend, off, RGB, standard colour space,
490	* preferred timing mode) */
491	0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
492	/* chromaticity for standard colour space. */
493	0x00, 0x00, 0x00, /* no default timings */
494	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
495	0x01, 0x01, 0x01, 0x01, /* no standard timings */
496	0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02, 0x02, 0x02,
497	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* descriptor block 1 goes here */
498	0x00, 0x00, 0x00, 0xFD, 0x00, /* descriptor block 2, monitor ranges */
499	0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
500	0x20, /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
501	0x00, 0x00, 0x00, 0xFC, 0x00, /* descriptor block 3, monitor name */
502	'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r', '\n',
503	0x00, 0x00, 0x00, 0x10, 0x00, /* descriptor block 4: dummy data */
504	0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
505	0x20,
506	0x00, /* number of extensions */
507	0x00 /* checksum goes here */
508	};
509	int clock = (width + 6) * (height + 6) * 60 / 10000;
510	unsigned i;
511	unsigned sum = 0;
512
513	edid[12] = width & 0xff;
514	edid[13] = width >> 8;
515	edid[14] = height & 0xff;
516	edid[15] = height >> 8;
517	edid[54] = clock & 0xff;
518	edid[55] = clock >> 8;
519	edid[56] = width & 0xff;
520	edid[58] = (width >> 4) & 0xf0;
521	edid[59] = height & 0xff;
522	edid[61] = (height >> 4) & 0xf0;
523	for (i = 0; i < EDID_SIZE - 1; ++i)
524	sum += edid[i];
525	edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
526	drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
527	}
528
529	static int vbox_get_modes(struct drm_connector *connector)
530	{
531	struct vbox_connector *vbox_connector = NULL;
532	struct drm_display_mode *mode = NULL;
533	struct vbox_private *vbox = NULL;
534	unsigned num_modes = 0;
535	int preferred_width, preferred_height;
536
537	vbox_connector = to_vbox_connector(connector);
538	vbox = connector->dev->dev_private;
539	/* Heuristic: we do not want to tell the host that we support dynamic
540	* resizing unless we feel confident that the user space client using
541	* the video driver can handle hot-plug events. So the first time modes
542	* are queried after a "master" switch we tell the host that we do not,
543	* and immediately after we send the client a hot-plug notification as
544	* a test to see if they will respond and query again.
545	* That is also the reason why capabilities are reported to the host at
546	* this place in the code rather than elsewhere.
547	* We need to report the flags location before reporting the IRQ
548	* capability. */
549	VBoxHGSMIReportFlagsLocation(&vbox->submit_info, vbox->vram_map_start
550	+ vbox->host_flags_offset);
551	if (vbox_connector->vbox_crtc->crtc_id == 0)
552	vbox_report_caps(vbox);
553	if (!vbox->initial_mode_queried) {
554	if (vbox_connector->vbox_crtc->crtc_id == 0) {
555	vbox->initial_mode_queried = true;
556	vbox_report_hotplug(vbox);
557	}
558	return drm_add_modes_noedid(connector, 800, 600);
559	}
560	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
561	preferred_width = vbox_connector->mode_hint.width ? vbox_connector->mode_hint.width : 1024;
562	preferred_height = vbox_connector->mode_hint.height ? vbox_connector->mode_hint.height : 768;
563	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 60, false,
564	false, false);
565	if (mode)
566	{
567	mode->type \|= DRM_MODE_TYPE_PREFERRED;
568	drm_mode_probed_add(connector, mode);
569	++num_modes;
570	}
571	vbox_set_edid(connector, preferred_width, preferred_height);
572	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
573	drm_object_property_set_value(&connector->base,
574	vbox->dev->mode_config.suggested_x_property,
575	vbox_connector->vbox_crtc->x_hint);
576	drm_object_property_set_value(&connector->base,
577	vbox->dev->mode_config.suggested_y_property,
578	vbox_connector->vbox_crtc->y_hint);
579	#endif
580	return num_modes;
581	}
582
583	static int vbox_mode_valid(struct drm_connector *connector,
584	struct drm_display_mode *mode)
585	{
586	return MODE_OK;
587	}
588
589	static void vbox_connector_destroy(struct drm_connector *connector)
590	{
591	struct vbox_connector *vbox_connector = NULL;
592
593	vbox_connector = to_vbox_connector(connector);
594	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
595	drm_sysfs_connector_remove(connector);
596	#else
597	drm_connector_unregister(connector);
598	#endif
599	drm_connector_cleanup(connector);
600	kfree(connector);
601	}
602
603	static enum drm_connector_status
604	vbox_connector_detect(struct drm_connector *connector, bool force)
605	{
606	struct vbox_connector *vbox_connector = NULL;
607
608	(void) force;
609	vbox_connector = to_vbox_connector(connector);
610	return vbox_connector->mode_hint.disconnected ?
611	connector_status_disconnected : connector_status_connected;
612	}
613
614	static int vbox_fill_modes(struct drm_connector *connector, uint32_t max_x, uint32_t max_y)
615	{
616	struct vbox_connector *vbox_connector;
617	struct drm_device *dev;
618	struct drm_display_mode mode, iterator;
619
620	vbox_connector = to_vbox_connector(connector);
621	dev = vbox_connector->base.dev;
622	list_for_each_entry_safe(mode, iterator, &connector->modes, head)
623	{
624	list_del(&mode->head);
625	drm_mode_destroy(dev, mode);
626	}
627	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
628	}
629
630	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
631	.mode_valid = vbox_mode_valid,
632	.get_modes = vbox_get_modes,
633	.best_encoder = vbox_best_single_encoder,
634	};
635
636	static const struct drm_connector_funcs vbox_connector_funcs = {
637	.dpms = drm_helper_connector_dpms,
638	.detect = vbox_connector_detect,
639	.fill_modes = vbox_fill_modes,
640	.destroy = vbox_connector_destroy,
641	};
642
643	static int vbox_connector_init(struct drm_device *dev,
644	struct vbox_crtc *vbox_crtc,
645	struct drm_encoder *encoder)
646	{
647	struct vbox_connector *vbox_connector;
648	struct drm_connector *connector;
649
650	vbox_connector = kzalloc(sizeof(struct vbox_connector), GFP_KERNEL);
651	if (!vbox_connector)
652	return -ENOMEM;
653
654	connector = &vbox_connector->base;
655	vbox_connector->vbox_crtc = vbox_crtc;
656
657	drm_connector_init(dev, connector, &vbox_connector_funcs,
658	DRM_MODE_CONNECTOR_VGA);
659	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
660
661	connector->interlace_allowed = 0;
662	connector->doublescan_allowed = 0;
663
664	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
665	drm_mode_create_suggested_offset_properties(dev);
666	drm_object_attach_property(&connector->base,
667	dev->mode_config.suggested_x_property, -1);
668	drm_object_attach_property(&connector->base,
669	dev->mode_config.suggested_y_property, -1);
670	#endif
671	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
672	drm_sysfs_connector_add(connector);
673	#else
674	drm_connector_register(connector);
675	#endif
676
677	drm_mode_connector_attach_encoder(connector, encoder);
678
679	return 0;
680	}
681
682	int vbox_mode_init(struct drm_device *dev)
683	{
684	struct vbox_private *vbox = dev->dev_private;
685	struct drm_encoder *encoder;
686	struct vbox_crtc *vbox_crtc;
687	unsigned i;
688	/* vbox_cursor_init(dev); */
689	for (i = 0; i < vbox->num_crtcs; ++i)
690	{
691	vbox_crtc = vbox_crtc_init(dev, i);
692	if (!vbox_crtc)
693	return -ENOMEM;
694	encoder = vbox_encoder_init(dev, i);
695	if (!encoder)
696	return -ENOMEM;
697	vbox_connector_init(dev, vbox_crtc, encoder);
698	}
699	return 0;
700	}
701
702	void vbox_mode_fini(struct drm_device *dev)
703	{
704	/* vbox_cursor_fini(dev); */
705	}
706
707
708	/** Copy the ARGB image and generate the mask, which is needed in case the host
709	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
710	* if the corresponding alpha value in the ARGB image is greater than 0xF0. */
711	static void copy_cursor_image(u8 src, u8 dst, int width, int height,
712	size_t mask_size)
713	{
714	unsigned i, j;
715	size_t line_size = (width + 7) / 8;
716
717	memcpy(dst + mask_size, src, width * height * 4);
718	for (i = 0; i < height; ++i)
719	for (j = 0; j < width; ++j)
720	if (((uint32_t )src)[i width + j] > 0xf0000000)
721	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
722	}
723
724	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
725	uint32_t handle, uint32_t width, uint32_t height,
726	int32_t hot_x, int32_t hot_y)
727	{
728	struct vbox_private *vbox = crtc->dev->dev_private;
729	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
730	struct drm_gem_object *obj;
731	struct vbox_bo *bo;
732	int ret, rc;
733	struct ttm_bo_kmap_obj uobj_map;
734	u8 *src;
735	u8 *dst = NULL;
736	u32 caps = 0;
737	size_t data_size, mask_size;
738	bool src_isiomem;
739
740	/* Re-set this regularly as in 5.0.20 and earlier the information was lost
741	* on save and restore. */
742	VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
743	vbox->input_mapping_width,
744	vbox->input_mapping_height);
745	if (!handle) {
746	bool cursor_enabled = false;
747	struct drm_crtc *crtci;
748
749	/* Hide cursor. */
750	vbox_crtc->cursor_enabled = false;
751	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head)
752	if (to_vbox_crtc(crtci)->cursor_enabled)
753	cursor_enabled = true;
754	if (!cursor_enabled)
755	VBoxHGSMIUpdatePointerShape(&vbox->submit_info, 0, 0, 0, 0, 0, NULL, 0);
756	return 0;
757	}
758	vbox_crtc->cursor_enabled = true;
759	if ( width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT
760	\|\| width == 0 \|\| height == 0)
761	return -EINVAL;
762	rc = VBoxQueryConfHGSMI(&vbox->submit_info,
763	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
764	ret = rc == VINF_SUCCESS ? 0 : rc == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
765	if (ret)
766	return ret;
767	if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE))
768	/* -EINVAL means cursor_set2() not supported, -EAGAIN means
769	* retry at once. */
770	return -EBUSY;
771
772	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)
773	obj = drm_gem_object_lookup(file_priv, handle);
774	#else
775	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
776	#endif
777	if (obj)
778	{
779	bo = gem_to_vbox_bo(obj);
780	ret = vbox_bo_reserve(bo, false);
781	if (!ret)
782	{
783	/* The mask must be calculated based on the alpha channel, one bit
784	* per ARGB word, and must be 32-bit padded. */
785	mask_size = ((width + 7) / 8 * height + 3) & ~3;
786	data_size = width * height * 4 + mask_size;
787	vbox->cursor_hot_x = min((uint32_t)max(hot_x, 0), width);
788	vbox->cursor_hot_y = min((uint32_t)max(hot_y, 0), height);
789	vbox->cursor_width = width;
790	vbox->cursor_height = height;
791	vbox->cursor_data_size = data_size;
792	dst = vbox->cursor_data;
793	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
794	if (!ret)
795	{
796	src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
797	if (!src_isiomem)
798	{
799	uint32_t flags = VBOX_MOUSE_POINTER_VISIBLE
800	\| VBOX_MOUSE_POINTER_SHAPE
801	\| VBOX_MOUSE_POINTER_ALPHA;
802	copy_cursor_image(src, dst, width, height, mask_size);
803	rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags,
804	vbox->cursor_hot_x,
805	vbox->cursor_hot_y,
806	width, height, dst,
807	data_size);
808	ret = rc == VINF_SUCCESS ? 0
809	: rc == VERR_NO_MEMORY ? -ENOMEM
810	: rc == VERR_NOT_SUPPORTED ? -EBUSY
811	: -EINVAL;
812	}
813	else
814	DRM_ERROR("src cursor bo should be in main memory\n");
815	ttm_bo_kunmap(&uobj_map);
816	}
817	else
818	vbox->cursor_data_size = 0;
819	vbox_bo_unreserve(bo);
820	}
821	drm_gem_object_unreference_unlocked(obj);
822	}
823	else
824	{
825	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
826	ret = -ENOENT;
827	}
828	return ret;
829	}
830
831	static int vbox_cursor_move(struct drm_crtc *crtc,
832	int x, int y)
833	{
834	struct vbox_private *vbox = crtc->dev->dev_private;
835	uint32_t flags = VBOX_MOUSE_POINTER_VISIBLE
836	\| VBOX_MOUSE_POINTER_SHAPE
837	\| VBOX_MOUSE_POINTER_ALPHA;
838	int32_t crtc_x = vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
839	int32_t crtc_y = vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
840	uint32_t host_x, host_y;
841	uint32_t hot_x = 0;
842	uint32_t hot_y = 0;
843	int rc;
844
845	/* We compare these to unsigned later and don't need to handle negative. */
846	if (x + crtc_x < 0 \|\| y + crtc_y < 0 \|\| vbox->cursor_data_size == 0)
847	return 0;
848	rc = VBoxHGSMICursorPosition(&vbox->submit_info, true, x + crtc_x,
849	y + crtc_y, &host_x, &host_y);
850	/* Work around a bug after save and restore in 5.0.20 and earlier. */
851	if (RT_FAILURE(rc) \|\| (host_x == 0 && host_y == 0))
852	return rc == VINF_SUCCESS ? 0
853	: rc == VERR_NO_MEMORY ? -ENOMEM
854	: -EINVAL;
855	if (x + crtc_x < host_x)
856	hot_x = min(host_x - x - crtc_x, vbox->cursor_width);
857	if (y + crtc_y < host_y)
858	hot_y = min(host_y - y - crtc_y, vbox->cursor_height);
859	if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
860	return 0;
861	vbox->cursor_hot_x = hot_x;
862	vbox->cursor_hot_y = hot_y;
863	rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags, hot_x, hot_y,
864	vbox->cursor_width, vbox->cursor_height,
865	vbox->cursor_data,
866	vbox->cursor_data_size);
867	return rc == VINF_SUCCESS ? 0
868	: rc == VERR_NO_MEMORY ? -ENOMEM
869	: rc == VERR_NOT_SUPPORTED ? -EBUSY
870	: -EINVAL;
871	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 66423

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