vbox_mode.c@ 69083

Last change on this file since 69083 was 69083, checked in by vboxsync, 7 years ago

Additions/linux/drm: Fix reporting invalid suggested-offset-properties.
bugref:8524: Additions/linux: play nicely with distribution-installed Additions

The x and y hints receives from the host are unsigned 32 bit integers and
they get set to -1 (0xffffffff) when invalid. Before this commit the
vboxvideo driver was storing them in an u16 causing the -1 to be truncated
to 65535 which, once reported to userspace, was breaking gnome 3.26+
in Wayland mode.

This commit stores the host values in 32 bit variables, removing the
truncation and checks for -1, replacing it with 0 as -1 is not a valid
suggested-offset-property value. Likewise the properties are now
initialized to 0 instead of -1, since -1 is not a valid value.
This fixes gnome 3.26+ in Wayland mode not working with the vboxvideo
driver.

Reported-by: Gianfranco Costamagna <locutusofborg@…>
Signed-off-by: Hans de Goede <hdegoede@…>

Property svn:eol-style set to native
Property svn:keywords set to Author Date Id Revision

File size: 27.3 KB

Line
1	/* $Id: vbox_mode.c 69083 2017-10-13 16:03:36Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013-2017 Oracle Corporation
8	* This file is based on ast_mode.c
9	* Copyright 2012 Red Hat Inc.
10	* Parts based on xf86-video-ast
11	* Copyright (c) 2005 ASPEED Technology Inc.
12	*
13	* Permission is hereby granted, free of charge, to any person obtaining a
14	* copy of this software and associated documentation files (the
15	* "Software"), to deal in the Software without restriction, including
16	* without limitation the rights to use, copy, modify, merge, publish,
17	* distribute, sub license, and/or sell copies of the Software, and to
18	* permit persons to whom the Software is furnished to do so, subject to
19	* the following conditions:
20	*
21	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
24	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
25	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
26	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
27	* USE OR OTHER DEALINGS IN THE SOFTWARE.
28	*
29	* The above copyright notice and this permission notice (including the
30	* next paragraph) shall be included in all copies or substantial portions
31	* of the Software.
32	*
33	*/
34	/*
35	* Authors: Dave Airlie <[email protected]>
36	* Michael Thayer <[email protected],
37	* Hans de Goede <[email protected]>
38	*/
39	#include "vbox_drv.h"
40	#include <linux/export.h>
41	#include <drm/drm_crtc_helper.h>
42	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0) \|\| defined(RHEL_73)
43	#include <drm/drm_plane_helper.h>
44	#endif
45
46	#include "VBoxVideo.h"
47	#include "hgsmi_channels.h"
48
49	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
50	u32 handle, u32 width, u32 height,
51	s32 hot_x, s32 hot_y);
52	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
53
54	/**
55	* Set a graphics mode. Poke any required values into registers, do an HGSMI
56	* mode set and tell the host we support advanced graphics functions.
57	*/
58	static void vbox_do_modeset(struct drm_crtc *crtc,
59	const struct drm_display_mode *mode)
60	{
61	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
62	struct vbox_private *vbox;
63	int width, height, bpp, pitch;
64	unsigned int crtc_id;
65	u16 flags;
66	s32 x_offset, y_offset;
67
68	vbox = crtc->dev->dev_private;
69	width = mode->hdisplay ? mode->hdisplay : 640;
70	height = mode->vdisplay ? mode->vdisplay : 480;
71	crtc_id = vbox_crtc->crtc_id;
72	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
73	bpp = crtc->enabled ? CRTC_FB(crtc)->format->cpp[0] * 8 : 32;
74	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
75	#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3, 3, 0)
76	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
77	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
78	#else
79	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
80	pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * bpp / 8;
81	#endif
82	x_offset = vbox->single_framebuffer ? crtc->x : vbox_crtc->x_hint;
83	y_offset = vbox->single_framebuffer ? crtc->y : vbox_crtc->y_hint;
84
85	/*
86	* This is the old way of setting graphics modes. It assumed one screen
87	* and a frame-buffer at the start of video RAM. On older versions of
88	* VirtualBox, certain parts of the code still assume that the first
89	* screen is programmed this way, so try to fake it.
90	*/
91	if (vbox_crtc->crtc_id == 0 && crtc->enabled &&
92	vbox_crtc->fb_offset / pitch < 0xffff - crtc->y &&
93	vbox_crtc->fb_offset % (bpp / 8) == 0)
94	VBoxVideoSetModeRegisters(
95	width, height, pitch * 8 / bpp,
96	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
97	CRTC_FB(crtc)->format->cpp[0] * 8,
98	#else
99	CRTC_FB(crtc)->bits_per_pixel,
100	#endif
101	0,
102	vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x,
103	vbox_crtc->fb_offset / pitch + crtc->y);
104
105	flags = VBVA_SCREEN_F_ACTIVE;
106	flags \|= (crtc->enabled && !vbox_crtc->blanked) ?
107	0 : VBVA_SCREEN_F_BLANK;
108	flags \|= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0;
109	VBoxHGSMIProcessDisplayInfo(vbox->guest_pool, vbox_crtc->crtc_id,
110	x_offset, y_offset,
111	crtc->x * bpp / 8 + crtc->y * pitch,
112	pitch, width, height,
113	vbox_crtc->blanked ? 0 : bpp, flags);
114	}
115
116	static int vbox_set_view(struct drm_crtc *crtc)
117	{
118	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
119	struct vbox_private *vbox = crtc->dev->dev_private;
120	void *p;
121
122	/*
123	* Tell the host about the view. This design originally targeted the
124	* Windows XP driver architecture and assumed that each screen would
125	* have a dedicated frame buffer with the command buffer following it,
126	* the whole being a "view". The host works out which screen a command
127	* buffer belongs to by checking whether it is in the first view, then
128	* whether it is in the second and so on. The first match wins. We
129	* cheat around this by making the first view be the managed memory
130	* plus the first command buffer, the second the same plus the second
131	* buffer and so on.
132	*/
133	p = VBoxHGSMIBufferAlloc(vbox->guest_pool, sizeof(VBVAINFOVIEW),
134	HGSMI_CH_VBVA, VBVA_INFO_VIEW);
135	if (p) {
136	VBVAINFOVIEW pInfo = (VBVAINFOVIEW ) p;
137
138	pInfo->u32ViewIndex = vbox_crtc->crtc_id;
139	pInfo->u32ViewOffset = vbox_crtc->fb_offset;
140	pInfo->u32ViewSize =
141	vbox->available_vram_size - vbox_crtc->fb_offset +
142	vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
143	pInfo->u32MaxScreenSize =
144	vbox->available_vram_size - vbox_crtc->fb_offset;
145	VBoxHGSMIBufferSubmit(vbox->guest_pool, p);
146	VBoxHGSMIBufferFree(vbox->guest_pool, p);
147	} else {
148	return -ENOMEM;
149	}
150
151	return 0;
152	}
153
154	static void vbox_crtc_load_lut(struct drm_crtc *crtc)
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
174	mutex_lock(&vbox->hw_mutex);
175	vbox_do_modeset(crtc, &crtc->hwmode);
176	mutex_unlock(&vbox->hw_mutex);
177	}
178
179	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
180	const struct drm_display_mode *mode,
181	struct drm_display_mode *adjusted_mode)
182	{
183	return true;
184	}
185
186	/*
187	* Try to map the layout of virtual screens to the range of the input device.
188	* Return true if we need to re-set the crtc modes due to screen offset
189	* changes.
190	*/
191	static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
192	{
193	struct drm_crtc *crtci;
194	struct drm_connector *connectori;
195	struct drm_framebuffer *fb1 = NULL;
196	bool single_framebuffer = true;
197	bool old_single_framebuffer = vbox->single_framebuffer;
198	u16 width = 0, height = 0;
199
200	/*
201	* Are we using an X.Org-style single large frame-buffer for all crtcs?
202	* If so then screen layout can be deduced from the crtc offsets.
203	* Same fall-back if this is the fbdev frame-buffer.
204	*/
205	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
206	if (!fb1) {
207	fb1 = CRTC_FB(crtci);
208	if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
209	break;
210	} else if (CRTC_FB(crtci) && fb1 != CRTC_FB(crtci)) {
211	single_framebuffer = false;
212	}
213	}
214	if (single_framebuffer) {
215	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
216	head) {
217	if (to_vbox_crtc(crtci)->crtc_id == 0) {
218	vbox->single_framebuffer = true;
219	vbox->input_mapping_width =
220	CRTC_FB(crtci)->width;
221	vbox->input_mapping_height =
222	CRTC_FB(crtci)->height;
223	return old_single_framebuffer !=
224	vbox->single_framebuffer;
225	}
226	}
227	}
228	/* Otherwise calculate the total span of all screens. */
229	list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list,
230	head) {
231	struct vbox_connector *vbox_connector =
232	to_vbox_connector(connectori);
233	struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
234
235	width = max_t(u16, width, vbox_crtc->x_hint +
236	vbox_connector->mode_hint.width);
237	height = max_t(u16, height, vbox_crtc->y_hint +
238	vbox_connector->mode_hint.height);
239	}
240
241	vbox->single_framebuffer = false;
242	vbox->input_mapping_width = width;
243	vbox->input_mapping_height = height;
244
245	return old_single_framebuffer != vbox->single_framebuffer;
246	}
247
248	static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
249	struct drm_framebuffer *old_fb, int x, int y)
250	{
251	struct vbox_private *vbox = crtc->dev->dev_private;
252	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
253	struct drm_gem_object *obj;
254	struct vbox_framebuffer *vbox_fb;
255	struct vbox_bo *bo;
256	int ret;
257	u64 gpu_addr;
258
259	/* Unpin the previous fb. */
260	if (old_fb) {
261	vbox_fb = to_vbox_framebuffer(old_fb);
262	obj = vbox_fb->obj;
263	bo = gem_to_vbox_bo(obj);
264	ret = vbox_bo_reserve(bo, false);
265	if (ret)
266	return ret;
267
268	vbox_bo_unpin(bo);
269	vbox_bo_unreserve(bo);
270	}
271
272	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
273	obj = vbox_fb->obj;
274	bo = gem_to_vbox_bo(obj);
275
276	ret = vbox_bo_reserve(bo, false);
277	if (ret)
278	return ret;
279
280	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
281	if (ret) {
282	vbox_bo_unreserve(bo);
283	return ret;
284	}
285
286	if (&vbox->fbdev->afb == vbox_fb)
287	vbox_fbdev_set_base(vbox, gpu_addr);
288	vbox_bo_unreserve(bo);
289
290	/* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
291	vbox_crtc->fb_offset = gpu_addr;
292	if (vbox_set_up_input_mapping(vbox)) {
293	struct drm_crtc *crtci;
294
295	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
296	head) {
297	vbox_set_view(crtc);
298	vbox_do_modeset(crtci, &crtci->mode);
299	}
300	}
301
302	return 0;
303	}
304
305	static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
306	struct drm_framebuffer *old_fb)
307	{
308	return vbox_crtc_do_set_base(crtc, old_fb, x, y);
309	}
310
311	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
312	struct drm_display_mode *mode,
313	struct drm_display_mode *adjusted_mode,
314	int x, int y, struct drm_framebuffer *old_fb)
315	{
316	struct vbox_private *vbox = crtc->dev->dev_private;
317	int rc = 0;
318
319	vbox_crtc_mode_set_base(crtc, x, y, old_fb);
320
321	mutex_lock(&vbox->hw_mutex);
322	rc = vbox_set_view(crtc);
323	if (!rc)
324	vbox_do_modeset(crtc, mode);
325	VBoxHGSMIUpdateInputMapping(vbox->guest_pool, 0, 0,
326	vbox->input_mapping_width,
327	vbox->input_mapping_height);
328	mutex_unlock(&vbox->hw_mutex);
329
330	return rc;
331	}
332
333	static void vbox_crtc_disable(struct drm_crtc *crtc)
334	{
335	}
336
337	static void vbox_crtc_prepare(struct drm_crtc *crtc)
338	{
339	}
340
341	static void vbox_crtc_commit(struct drm_crtc *crtc)
342	{
343	}
344
345	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
346	.dpms = vbox_crtc_dpms,
347	.mode_fixup = vbox_crtc_mode_fixup,
348	.mode_set = vbox_crtc_mode_set,
349	/* .mode_set_base = vbox_crtc_mode_set_base, */
350	.disable = vbox_crtc_disable,
351	.load_lut = vbox_crtc_load_lut,
352	.prepare = vbox_crtc_prepare,
353	.commit = vbox_crtc_commit,
354	};
355
356	static void vbox_crtc_reset(struct drm_crtc *crtc)
357	{
358	}
359
360	static void vbox_crtc_destroy(struct drm_crtc *crtc)
361	{
362	drm_crtc_cleanup(crtc);
363	kfree(crtc);
364	}
365
366	static const struct drm_crtc_funcs vbox_crtc_funcs = {
367	.cursor_move = vbox_cursor_move,
368	.cursor_set2 = vbox_cursor_set2,
369	.reset = vbox_crtc_reset,
370	.set_config = drm_crtc_helper_set_config,
371	/* .gamma_set = vbox_crtc_gamma_set, */
372	.destroy = vbox_crtc_destroy,
373	};
374
375	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned int i)
376	{
377	struct vbox_crtc *vbox_crtc;
378
379	vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
380	if (!vbox_crtc)
381	return NULL;
382
383	vbox_crtc->crtc_id = i;
384
385	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
386	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
387	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
388
389	return vbox_crtc;
390	}
391
392	static void vbox_encoder_destroy(struct drm_encoder *encoder)
393	{
394	drm_encoder_cleanup(encoder);
395	kfree(encoder);
396	}
397
398	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0) && !defined(RHEL_73)
399	static struct drm_encoder drm_encoder_find(struct drm_device dev, u32 id)
400	{
401	struct drm_mode_object *mo;
402
403	mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
404	return mo ? obj_to_encoder(mo) : NULL;
405	}
406	#endif
407
408	static struct drm_encoder *vbox_best_single_encoder(struct drm_connector
409	*connector)
410	{
411	int enc_id = connector->encoder_ids[0];
412
413	/* pick the encoder ids */
414	if (enc_id)
415	return drm_encoder_find(connector->dev, enc_id);
416
417	return NULL;
418	}
419
420	static const struct drm_encoder_funcs vbox_enc_funcs = {
421	.destroy = vbox_encoder_destroy,
422	};
423
424	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
425	{
426	}
427
428	static bool vbox_mode_fixup(struct drm_encoder *encoder,
429	const struct drm_display_mode *mode,
430	struct drm_display_mode *adjusted_mode)
431	{
432	return true;
433	}
434
435	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
436	struct drm_display_mode *mode,
437	struct drm_display_mode *adjusted_mode)
438	{
439	}
440
441	static void vbox_encoder_prepare(struct drm_encoder *encoder)
442	{
443	}
444
445	static void vbox_encoder_commit(struct drm_encoder *encoder)
446	{
447	}
448
449	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
450	.dpms = vbox_encoder_dpms,
451	.mode_fixup = vbox_mode_fixup,
452	.prepare = vbox_encoder_prepare,
453	.commit = vbox_encoder_commit,
454	.mode_set = vbox_encoder_mode_set,
455	};
456
457	static struct drm_encoder vbox_encoder_init(struct drm_device dev,
458	unsigned int i)
459	{
460	struct vbox_encoder *vbox_encoder;
461
462	vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
463	if (!vbox_encoder)
464	return NULL;
465
466	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
467	DRM_MODE_ENCODER_DAC
468	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0) \|\| defined(RHEL_73)
469	, NULL
470	#endif
471	);
472	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
473
474	vbox_encoder->base.possible_crtcs = 1 << i;
475	return &vbox_encoder->base;
476	}
477
478	/**
479	* Generate EDID data with a mode-unique serial number for the virtual
480	* monitor to try to persuade Unity that different modes correspond to
481	* different monitors and it should not try to force the same resolution on
482	* them.
483	*/
484	static void vbox_set_edid(struct drm_connector *connector, int width,
485	int height)
486	{
487	enum { EDID_SIZE = 128 };
488	unsigned char edid[EDID_SIZE] = {
489	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
490	0x58, 0x58, /* manufacturer (VBX) */
491	0x00, 0x00, /* product code */
492	0x00, 0x00, 0x00, 0x00, /* serial number goes here */
493	0x01, /* week of manufacture */
494	0x00, /* year of manufacture */
495	0x01, 0x03, /* EDID version */
496	0x80, /* capabilities - digital */
497	0x00, /* horiz. res in cm, zero for projectors */
498	0x00, /* vert. res in cm */
499	0x78, /* display gamma (120 == 2.2). */
500	0xEE, /* features (standby, suspend, off, RGB, std */
501	/* colour space, preferred timing mode) */
502	0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
503	/* chromaticity for standard colour space. */
504	0x00, 0x00, 0x00, /* no default timings */
505	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
506	0x01, 0x01,
507	0x01, 0x01, 0x01, 0x01, /* no standard timings */
508	0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
509	0x02, 0x02,
510	/* descriptor block 1 goes below */
511	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
512	/* descriptor block 2, monitor ranges */
513	0x00, 0x00, 0x00, 0xFD, 0x00,
514	0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
515	0x20, 0x20,
516	/* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
517	0x20,
518	/* descriptor block 3, monitor name */
519	0x00, 0x00, 0x00, 0xFC, 0x00,
520	'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
521	'\n',
522	/* descriptor block 4: dummy data */
523	0x00, 0x00, 0x00, 0x10, 0x00,
524	0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
525	0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
526	0x20,
527	0x00, /* number of extensions */
528	0x00 /* checksum goes here */
529	};
530	int clock = (width + 6) * (height + 6) * 60 / 10000;
531	unsigned int i, sum = 0;
532
533	edid[12] = width & 0xff;
534	edid[13] = width >> 8;
535	edid[14] = height & 0xff;
536	edid[15] = height >> 8;
537	edid[54] = clock & 0xff;
538	edid[55] = clock >> 8;
539	edid[56] = width & 0xff;
540	edid[58] = (width >> 4) & 0xf0;
541	edid[59] = height & 0xff;
542	edid[61] = (height >> 4) & 0xf0;
543	for (i = 0; i < EDID_SIZE - 1; ++i)
544	sum += edid[i];
545	edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
546	drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
547	}
548
549	static int vbox_get_modes(struct drm_connector *connector)
550	{
551	struct vbox_connector *vbox_connector = NULL;
552	struct drm_display_mode *mode = NULL;
553	struct vbox_private *vbox = NULL;
554	unsigned int num_modes = 0;
555	int preferred_width, preferred_height;
556
557	vbox_connector = to_vbox_connector(connector);
558	vbox = connector->dev->dev_private;
559	/*
560	* Heuristic: we do not want to tell the host that we support dynamic
561	* resizing unless we feel confident that the user space client using
562	* the video driver can handle hot-plug events. So the first time modes
563	* are queried after a "master" switch we tell the host that we do not,
564	* and immediately after we send the client a hot-plug notification as
565	* a test to see if they will respond and query again.
566	* That is also the reason why capabilities are reported to the host at
567	* this place in the code rather than elsewhere.
568	* We need to report the flags location before reporting the IRQ
569	* capability.
570	*/
571	VBoxHGSMIReportFlagsLocation(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
572	HOST_FLAGS_OFFSET);
573	if (vbox_connector->vbox_crtc->crtc_id == 0)
574	vbox_report_caps(vbox);
575	if (!vbox->initial_mode_queried) {
576	if (vbox_connector->vbox_crtc->crtc_id == 0) {
577	vbox->initial_mode_queried = true;
578	vbox_report_hotplug(vbox);
579	}
580	return drm_add_modes_noedid(connector, 800, 600);
581	}
582	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
583	preferred_width = vbox_connector->mode_hint.width ?
584	vbox_connector->mode_hint.width : 1024;
585	preferred_height = vbox_connector->mode_hint.height ?
586	vbox_connector->mode_hint.height : 768;
587	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
588	60, false, false, false);
589	if (mode) {
590	mode->type \|= DRM_MODE_TYPE_PREFERRED;
591	drm_mode_probed_add(connector, mode);
592	++num_modes;
593	}
594	vbox_set_edid(connector, preferred_width, preferred_height);
595
596	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) \|\| defined(RHEL_73)
597	if (vbox_connector->vbox_crtc->x_hint != -1)
598	drm_object_property_set_value(&connector->base,
599	vbox->dev->mode_config.suggested_x_property,
600	vbox_connector->vbox_crtc->x_hint);
601	else
602	drm_object_property_set_value(&connector->base,
603	vbox->dev->mode_config.suggested_x_property, 0);
604
605	if (vbox_connector->vbox_crtc->y_hint != -1)
606	drm_object_property_set_value(&connector->base,
607	vbox->dev->mode_config.suggested_y_property,
608	vbox_connector->vbox_crtc->y_hint);
609	else
610	drm_object_property_set_value(&connector->base,
611	vbox->dev->mode_config.suggested_y_property, 0);
612	#endif
613
614	return num_modes;
615	}
616
617	static int vbox_mode_valid(struct drm_connector *connector,
618	struct drm_display_mode *mode)
619	{
620	return MODE_OK;
621	}
622
623	static void vbox_connector_destroy(struct drm_connector *connector)
624	{
625	struct vbox_connector *vbox_connector = NULL;
626
627	vbox_connector = to_vbox_connector(connector);
628	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(RHEL_73)
629	drm_sysfs_connector_remove(connector);
630	#else
631	drm_connector_unregister(connector);
632	#endif
633	drm_connector_cleanup(connector);
634	kfree(connector);
635	}
636
637	static enum drm_connector_status
638	vbox_connector_detect(struct drm_connector *connector, bool force)
639	{
640	struct vbox_connector *vbox_connector = NULL;
641
642	(void)force;
643	vbox_connector = to_vbox_connector(connector);
644
645	return vbox_connector->mode_hint.disconnected ?
646	connector_status_disconnected : connector_status_connected;
647	}
648
649	static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
650	u32 max_y)
651	{
652	struct vbox_connector *vbox_connector;
653	struct drm_device *dev;
654	struct drm_display_mode mode, iterator;
655
656	vbox_connector = to_vbox_connector(connector);
657	dev = vbox_connector->base.dev;
658	list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
659	list_del(&mode->head);
660	drm_mode_destroy(dev, mode);
661	}
662
663	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
664	}
665
666	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
667	.mode_valid = vbox_mode_valid,
668	.get_modes = vbox_get_modes,
669	.best_encoder = vbox_best_single_encoder,
670	};
671
672	static const struct drm_connector_funcs vbox_connector_funcs = {
673	.dpms = drm_helper_connector_dpms,
674	.detect = vbox_connector_detect,
675	.fill_modes = vbox_fill_modes,
676	.destroy = vbox_connector_destroy,
677	};
678
679	static int vbox_connector_init(struct drm_device *dev,
680	struct vbox_crtc *vbox_crtc,
681	struct drm_encoder *encoder)
682	{
683	struct vbox_connector *vbox_connector;
684	struct drm_connector *connector;
685
686	vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
687	if (!vbox_connector)
688	return -ENOMEM;
689
690	connector = &vbox_connector->base;
691	vbox_connector->vbox_crtc = vbox_crtc;
692
693	drm_connector_init(dev, connector, &vbox_connector_funcs,
694	DRM_MODE_CONNECTOR_VGA);
695	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
696
697	connector->interlace_allowed = 0;
698	connector->doublescan_allowed = 0;
699
700	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) \|\| defined(RHEL_73)
701	drm_mode_create_suggested_offset_properties(dev);
702	drm_object_attach_property(&connector->base,
703	dev->mode_config.suggested_x_property, 0);
704	drm_object_attach_property(&connector->base,
705	dev->mode_config.suggested_y_property, 0);
706	#endif
707	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(RHEL_73)
708	drm_sysfs_connector_add(connector);
709	#else
710	drm_connector_register(connector);
711	#endif
712
713	drm_mode_connector_attach_encoder(connector, encoder);
714
715	return 0;
716	}
717
718	int vbox_mode_init(struct drm_device *dev)
719	{
720	struct vbox_private *vbox = dev->dev_private;
721	struct drm_encoder *encoder;
722	struct vbox_crtc *vbox_crtc;
723	unsigned int i;
724
725	/* vbox_cursor_init(dev); */
726	for (i = 0; i < vbox->num_crtcs; ++i) {
727	vbox_crtc = vbox_crtc_init(dev, i);
728	if (!vbox_crtc)
729	return -ENOMEM;
730	encoder = vbox_encoder_init(dev, i);
731	if (!encoder)
732	return -ENOMEM;
733	vbox_connector_init(dev, vbox_crtc, encoder);
734	}
735
736	return 0;
737	}
738
739	void vbox_mode_fini(struct drm_device *dev)
740	{
741	/* vbox_cursor_fini(dev); */
742	}
743
744	/**
745	* Copy the ARGB image and generate the mask, which is needed in case the host
746	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
747	* if the corresponding alpha value in the ARGB image is greater than 0xF0.
748	*/
749	static void copy_cursor_image(u8 src, u8 dst, u32 width, u32 height,
750	size_t mask_size)
751	{
752	size_t line_size = (width + 7) / 8;
753	u32 i, j;
754
755	memcpy(dst + mask_size, src, width * height * 4);
756	for (i = 0; i < height; ++i)
757	for (j = 0; j < width; ++j)
758	if (((u32 )src)[i width + j] > 0xf0000000)
759	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
760	}
761
762	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
763	u32 handle, u32 width, u32 height,
764	s32 hot_x, s32 hot_y)
765	{
766	struct vbox_private *vbox = crtc->dev->dev_private;
767	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
768	struct drm_gem_object *obj;
769	struct vbox_bo *bo;
770	int ret, rc;
771	struct ttm_bo_kmap_obj uobj_map;
772	u8 *src;
773	u8 *dst = NULL;
774	u32 caps = 0;
775	size_t data_size, mask_size;
776	bool src_isiomem;
777
778	/*
779	* Re-set this regularly as in 5.0.20 and earlier the information was
780	* lost on save and restore.
781	*/
782	VBoxHGSMIUpdateInputMapping(vbox->guest_pool, 0, 0,
783	vbox->input_mapping_width,
784	vbox->input_mapping_height);
785	if (!handle) {
786	bool cursor_enabled = false;
787	struct drm_crtc *crtci;
788
789	/* Hide cursor. */
790	vbox_crtc->cursor_enabled = false;
791	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
792	head)
793	if (to_vbox_crtc(crtci)->cursor_enabled)
794	cursor_enabled = true;
795
796	if (!cursor_enabled)
797	VBoxHGSMIUpdatePointerShape(vbox->guest_pool, 0, 0, 0,
798	0, 0, NULL, 0);
799	return 0;
800	}
801	vbox_crtc->cursor_enabled = true;
802	if (width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT \|\|
803	width == 0 \|\| height == 0)
804	return -EINVAL;
805	rc = VBoxQueryConfHGSMI(vbox->guest_pool,
806	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
807	ret = rc == VINF_SUCCESS ? 0 : rc == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
808	if (ret)
809	return ret;
810
811	if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE))
812	/*
813	* -EINVAL means cursor_set2() not supported, -EAGAIN means
814	* retry at once.
815	*/
816	return -EBUSY;
817
818	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0) \|\| defined(RHEL_74)
819	obj = drm_gem_object_lookup(file_priv, handle);
820	#else
821	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
822	#endif
823	if (obj) {
824	bo = gem_to_vbox_bo(obj);
825	ret = vbox_bo_reserve(bo, false);
826	if (!ret) {
827	/*
828	* The mask must be calculated based on the alpha
829	* channel, one bit per ARGB word, and must be 32-bit
830	* padded.
831	*/
832	mask_size = ((width + 7) / 8 * height + 3) & ~3;
833	data_size = width * height * 4 + mask_size;
834	vbox->cursor_hot_x = min_t(u32, max(hot_x, 0), width);
835	vbox->cursor_hot_y = min_t(u32, max(hot_y, 0), height);
836	vbox->cursor_width = width;
837	vbox->cursor_height = height;
838	vbox->cursor_data_size = data_size;
839	dst = vbox->cursor_data;
840	ret =
841	ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages,
842	&uobj_map);
843	if (!ret) {
844	src =
845	ttm_kmap_obj_virtual(&uobj_map,
846	&src_isiomem);
847	if (!src_isiomem) {
848	u32 flags =
849	VBOX_MOUSE_POINTER_VISIBLE \|
850	VBOX_MOUSE_POINTER_SHAPE \|
851	VBOX_MOUSE_POINTER_ALPHA;
852	copy_cursor_image(src, dst, width,
853	height, mask_size);
854	rc = VBoxHGSMIUpdatePointerShape(
855	vbox->guest_pool, flags,
856	vbox->cursor_hot_x,
857	vbox->cursor_hot_y,
858	width, height, dst, data_size);
859	ret =
860	rc == VINF_SUCCESS ? 0 : rc ==
861	VERR_NO_MEMORY ? -ENOMEM : rc ==
862	VERR_NOT_SUPPORTED ? -EBUSY :
863	-EINVAL;
864	} else {
865	DRM_ERROR("src cursor bo should be in main memory\n");
866	}
867	ttm_bo_kunmap(&uobj_map);
868	} else {
869	vbox->cursor_data_size = 0;
870	}
871	vbox_bo_unreserve(bo);
872	}
873	drm_gem_object_unreference_unlocked(obj);
874	} else {
875	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
876	ret = -ENOENT;
877	}
878
879	return ret;
880	}
881
882	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
883	{
884	struct vbox_private *vbox = crtc->dev->dev_private;
885	u32 flags = VBOX_MOUSE_POINTER_VISIBLE \|
886	VBOX_MOUSE_POINTER_SHAPE \| VBOX_MOUSE_POINTER_ALPHA;
887	s32 crtc_x =
888	vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
889	s32 crtc_y =
890	vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
891	u32 host_x, host_y;
892	u32 hot_x = 0;
893	u32 hot_y = 0;
894	int rc;
895
896	/*
897	* We compare these to unsigned later and don't
898	* need to handle negative.
899	*/
900	if (x + crtc_x < 0 \|\| y + crtc_y < 0 \|\| vbox->cursor_data_size == 0)
901	return 0;
902
903	rc = VBoxHGSMICursorPosition(vbox->guest_pool, true, x + crtc_x,
904	y + crtc_y, &host_x, &host_y);
905	/* Work around a bug after save and restore in 5.0.20 and earlier. */
906	if (RT_FAILURE(rc) \|\| (host_x == 0 && host_y == 0))
907	return rc == VINF_SUCCESS ? 0
908	: rc == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
909	if (x + crtc_x < host_x)
910	hot_x = min(host_x - x - crtc_x, vbox->cursor_width);
911	if (y + crtc_y < host_y)
912	hot_y = min(host_y - y - crtc_y, vbox->cursor_height);
913	if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
914	return 0;
915	vbox->cursor_hot_x = hot_x;
916	vbox->cursor_hot_y = hot_y;
917	rc = VBoxHGSMIUpdatePointerShape(vbox->guest_pool, flags, hot_x, hot_y,
918	vbox->cursor_width,
919	vbox->cursor_height, vbox->cursor_data,
920	vbox->cursor_data_size);
921	return rc == VINF_SUCCESS ? 0 : rc == VERR_NO_MEMORY ? -ENOMEM : rc ==
922	VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL;
923	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 69083

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