vbox_mode.c@ 76978

Last change on this file since 76978 was 76978, checked in by vboxsync, 6 years ago

Additions/linux/vboxvideo: Pass a new framebuffer to vbox_crtc_do_set_base
bugref:8282: Additions/linux: track kernel changes to vboxvideo in our own tree

This modifies vbox_crtc_do_set_base() to take a new framebuffer to
be activated, instead of the existing framebuffer attached to the crtc.
This change allows the function to be given the new framebuffer from
a page-flip request.

Signed-off-by: Steve Longerbeam <steve_longerbeam@…>
Signed-off-by: Greg Kroah-Hartman <gregkh@…>

Adjusted by the VirtualBox team.

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

File size: 25.5 KB

Line
1	/* $Id: vbox_mode.c 76978 2019-01-24 14:44:27Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013-2019 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_72)
43	#include <drm/drm_plane_helper.h>
44	#endif
45
46	#include "VBoxVideo.h"
47
48	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
49	u32 handle, u32 width, u32 height,
50	s32 hot_x, s32 hot_y);
51	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
52
53	/**
54	* Set a graphics mode. Poke any required values into registers, do an HGSMI
55	* mode set and tell the host we support advanced graphics functions.
56	*/
57	static void vbox_do_modeset(struct drm_crtc *crtc,
58	const struct drm_display_mode *mode)
59	{
60	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
61	struct vbox_private *vbox;
62	int width, height, bpp, pitch;
63	u16 flags;
64	s32 x_offset, y_offset;
65
66	vbox = crtc->dev->dev_private;
67	width = mode->hdisplay ? mode->hdisplay : 640;
68	height = mode->vdisplay ? mode->vdisplay : 480;
69	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0) \|\| defined(RHEL_75)
70	bpp = crtc->enabled ? CRTC_FB(crtc)->format->cpp[0] * 8 : 32;
71	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
72	#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3, 3, 0)
73	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
74	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
75	#else
76	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
77	pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * bpp / 8;
78	#endif
79	x_offset = vbox->single_framebuffer ? crtc->x : vbox_crtc->x_hint;
80	y_offset = vbox->single_framebuffer ? crtc->y : vbox_crtc->y_hint;
81
82	/*
83	* This is the old way of setting graphics modes. It assumed one screen
84	* and a frame-buffer at the start of video RAM. On older versions of
85	* VirtualBox, certain parts of the code still assume that the first
86	* screen is programmed this way, so try to fake it.
87	*/
88	if (vbox_crtc->crtc_id == 0 && crtc->enabled &&
89	vbox_crtc->fb_offset / pitch < 0xffff - crtc->y &&
90	vbox_crtc->fb_offset % (bpp / 8) == 0)
91	VBoxVideoSetModeRegisters(
92	width, height, pitch * 8 / bpp,
93	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0) \|\| defined(RHEL_75)
94	CRTC_FB(crtc)->format->cpp[0] * 8,
95	#else
96	CRTC_FB(crtc)->bits_per_pixel,
97	#endif
98	0,
99	vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x,
100	vbox_crtc->fb_offset / pitch + crtc->y);
101
102	flags = VBVA_SCREEN_F_ACTIVE;
103	flags \|= (crtc->enabled && !vbox_crtc->blanked) ?
104	0 : VBVA_SCREEN_F_BLANK;
105	flags \|= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0;
106	VBoxHGSMIProcessDisplayInfo(vbox->guest_pool, vbox_crtc->crtc_id,
107	x_offset, y_offset, vbox_crtc->fb_offset +
108	crtc->x * bpp / 8 + crtc->y * pitch,
109	pitch, width, height,
110	vbox_crtc->blanked ? 0 : bpp, flags);
111	}
112
113	static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
114	{
115	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
116	struct vbox_private *vbox = crtc->dev->dev_private;
117
118	switch (mode) {
119	case DRM_MODE_DPMS_ON:
120	vbox_crtc->blanked = false;
121	/* Restart the refresh timer if necessary. */
122	schedule_delayed_work(&vbox->refresh_work, VBOX_REFRESH_PERIOD);
123	break;
124	case DRM_MODE_DPMS_STANDBY:
125	case DRM_MODE_DPMS_SUSPEND:
126	case DRM_MODE_DPMS_OFF:
127	vbox_crtc->blanked = true;
128	break;
129	}
130
131	mutex_lock(&vbox->hw_mutex);
132	vbox_do_modeset(crtc, &crtc->hwmode);
133	mutex_unlock(&vbox->hw_mutex);
134	}
135
136	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
137	const struct drm_display_mode *mode,
138	struct drm_display_mode *adjusted_mode)
139	{
140	return true;
141	}
142
143	/*
144	* Try to map the layout of virtual screens to the range of the input device.
145	* Return true if we need to re-set the crtc modes due to screen offset
146	* changes.
147	*/
148	static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
149	{
150	struct drm_crtc *crtci;
151	struct drm_connector *connectori;
152	struct drm_framebuffer *fb1 = NULL;
153	bool single_framebuffer = true;
154	bool old_single_framebuffer = vbox->single_framebuffer;
155	u16 width = 0, height = 0;
156
157	/*
158	* Are we using an X.Org-style single large frame-buffer for all crtcs?
159	* If so then screen layout can be deduced from the crtc offsets.
160	* Same fall-back if this is the fbdev frame-buffer.
161	*/
162	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
163	if (!fb1) {
164	fb1 = CRTC_FB(crtci);
165	if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
166	break;
167	} else if (CRTC_FB(crtci) && fb1 != CRTC_FB(crtci)) {
168	single_framebuffer = false;
169	}
170	}
171	if (single_framebuffer) {
172	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
173	head) {
174	if (to_vbox_crtc(crtci)->crtc_id != 0)
175	continue;
176
177	vbox->single_framebuffer = true;
178	vbox->input_mapping_width = CRTC_FB(crtci)->width;
179	vbox->input_mapping_height = CRTC_FB(crtci)->height;
180	return old_single_framebuffer !=
181	vbox->single_framebuffer;
182	}
183	}
184	/* Otherwise calculate the total span of all screens. */
185	list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list,
186	head) {
187	struct vbox_connector *vbox_connector =
188	to_vbox_connector(connectori);
189	struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
190
191	width = max_t(u16, width, vbox_crtc->x_hint +
192	vbox_connector->mode_hint.width);
193	height = max_t(u16, height, vbox_crtc->y_hint +
194	vbox_connector->mode_hint.height);
195	}
196
197	vbox->single_framebuffer = false;
198	vbox->input_mapping_width = width;
199	vbox->input_mapping_height = height;
200
201	return old_single_framebuffer != vbox->single_framebuffer;
202	}
203
204	static int vbox_crtc_set_base(struct drm_crtc *crtc,
205	struct drm_framebuffer *old_fb,
206	struct drm_framebuffer *new_fb,
207	int x, int y)
208	{
209	struct vbox_private *vbox = crtc->dev->dev_private;
210	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
211	struct drm_gem_object *obj;
212	struct vbox_framebuffer *vbox_fb;
213	struct vbox_bo *bo;
214	int ret;
215	u64 gpu_addr;
216
217	vbox_fb = to_vbox_framebuffer(new_fb);
218	obj = vbox_fb->obj;
219	bo = gem_to_vbox_bo(obj);
220
221	ret = vbox_bo_reserve(bo, false);
222	if (ret)
223	return ret;
224
225	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
226	vbox_bo_unreserve(bo);
227	if (ret)
228	return ret;
229
230	/* Unpin the previous fb. Do this after the new one has been pinned rather
231	* than before and re-pinning it on failure in case that fails too. */
232	if (old_fb) {
233	vbox_fb = to_vbox_framebuffer(old_fb);
234	obj = vbox_fb->obj;
235	bo = gem_to_vbox_bo(obj);
236	ret = vbox_bo_reserve(bo, false);
237	/* This should never fail, as no one else should be accessing it and we
238	* should be running under the modeset locks. */
239	if (!ret) {
240	vbox_bo_unpin(bo);
241	vbox_bo_unreserve(bo);
242	}
243	}
244
245	if (&vbox->fbdev->afb == vbox_fb)
246	vbox_fbdev_set_base(vbox, gpu_addr);
247
248	vbox_crtc->fb_offset = gpu_addr;
249	if (vbox_set_up_input_mapping(vbox)) {
250	struct drm_crtc *crtci;
251
252	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
253	head) {
254	vbox_do_modeset(crtci, &crtci->mode);
255	}
256	}
257
258	return 0;
259	}
260
261	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
262	struct drm_display_mode *mode,
263	struct drm_display_mode *adjusted_mode,
264	int x, int y, struct drm_framebuffer *old_fb)
265	{
266	struct vbox_private *vbox = crtc->dev->dev_private;
267	int ret = vbox_crtc_set_base(crtc, old_fb, CRTC_FB(crtc), x, y);
268	if (ret)
269	return ret;
270	mutex_lock(&vbox->hw_mutex);
271	vbox_do_modeset(crtc, mode);
272	VBoxHGSMIUpdateInputMapping(vbox->guest_pool, 0, 0,
273	vbox->input_mapping_width,
274	vbox->input_mapping_height);
275	mutex_unlock(&vbox->hw_mutex);
276
277	return ret;
278	}
279
280	static void vbox_crtc_disable(struct drm_crtc *crtc)
281	{
282	}
283
284	static void vbox_crtc_prepare(struct drm_crtc *crtc)
285	{
286	}
287
288	static void vbox_crtc_commit(struct drm_crtc *crtc)
289	{
290	}
291
292	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
293	.dpms = vbox_crtc_dpms,
294	.mode_fixup = vbox_crtc_mode_fixup,
295	.mode_set = vbox_crtc_mode_set,
296	.disable = vbox_crtc_disable,
297	.prepare = vbox_crtc_prepare,
298	.commit = vbox_crtc_commit,
299	};
300
301	static void vbox_crtc_reset(struct drm_crtc *crtc)
302	{
303	}
304
305	static void vbox_crtc_destroy(struct drm_crtc *crtc)
306	{
307	drm_crtc_cleanup(crtc);
308	kfree(crtc);
309	}
310
311	static const struct drm_crtc_funcs vbox_crtc_funcs = {
312	.cursor_move = vbox_cursor_move,
313	.cursor_set2 = vbox_cursor_set2,
314	.reset = vbox_crtc_reset,
315	.set_config = drm_crtc_helper_set_config,
316	/* .gamma_set = vbox_crtc_gamma_set, */
317	.destroy = vbox_crtc_destroy,
318	};
319
320	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned int i)
321	{
322	struct vbox_crtc *vbox_crtc;
323
324	vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
325	if (!vbox_crtc)
326	return NULL;
327
328	vbox_crtc->crtc_id = i;
329
330	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
331	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
332	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
333
334	return vbox_crtc;
335	}
336
337	static void vbox_encoder_destroy(struct drm_encoder *encoder)
338	{
339	drm_encoder_cleanup(encoder);
340	kfree(encoder);
341	}
342
343	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0) && !defined(RHEL_71)
344	static struct drm_encoder drm_encoder_find(struct drm_device dev, u32 id)
345	{
346	struct drm_mode_object *mo;
347
348	mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
349	return mo ? obj_to_encoder(mo) : NULL;
350	}
351	#endif
352
353	static struct drm_encoder *vbox_best_single_encoder(struct drm_connector
354	*connector)
355	{
356	int enc_id = connector->encoder_ids[0];
357
358	/* pick the encoder ids */
359	if (enc_id)
360	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0) \|\| \
361	(defined(CONFIG_SUSE_VERSION) && \
362	LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)) \|\| \
363	defined(RHEL_76)
364	return drm_encoder_find(connector->dev, NULL, enc_id);
365	#else
366	return drm_encoder_find(connector->dev, enc_id);
367	#endif
368
369	return NULL;
370	}
371
372	static const struct drm_encoder_funcs vbox_enc_funcs = {
373	.destroy = vbox_encoder_destroy,
374	};
375
376	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
377	{
378	}
379
380	static bool vbox_mode_fixup(struct drm_encoder *encoder,
381	const struct drm_display_mode *mode,
382	struct drm_display_mode *adjusted_mode)
383	{
384	return true;
385	}
386
387	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
388	struct drm_display_mode *mode,
389	struct drm_display_mode *adjusted_mode)
390	{
391	}
392
393	static void vbox_encoder_prepare(struct drm_encoder *encoder)
394	{
395	}
396
397	static void vbox_encoder_commit(struct drm_encoder *encoder)
398	{
399	}
400
401	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
402	.dpms = vbox_encoder_dpms,
403	.mode_fixup = vbox_mode_fixup,
404	.prepare = vbox_encoder_prepare,
405	.commit = vbox_encoder_commit,
406	.mode_set = vbox_encoder_mode_set,
407	};
408
409	static struct drm_encoder vbox_encoder_init(struct drm_device dev,
410	unsigned int i)
411	{
412	struct vbox_encoder *vbox_encoder;
413
414	vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
415	if (!vbox_encoder)
416	return NULL;
417
418	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
419	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0) \|\| defined(RHEL_73)
420	DRM_MODE_ENCODER_DAC, NULL);
421	#else
422	DRM_MODE_ENCODER_DAC);
423	#endif
424	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
425
426	vbox_encoder->base.possible_crtcs = 1 << i;
427	return &vbox_encoder->base;
428	}
429
430	/**
431	* Generate EDID data with a mode-unique serial number for the virtual
432	* monitor to try to persuade Unity that different modes correspond to
433	* different monitors and it should not try to force the same resolution on
434	* them.
435	*/
436	static void vbox_set_edid(struct drm_connector *connector, int width,
437	int height)
438	{
439	enum { EDID_SIZE = 128 };
440	unsigned char edid[EDID_SIZE] = {
441	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
442	0x58, 0x58, /* manufacturer (VBX) */
443	0x00, 0x00, /* product code */
444	0x00, 0x00, 0x00, 0x00, /* serial number goes here */
445	0x01, /* week of manufacture */
446	0x00, /* year of manufacture */
447	0x01, 0x03, /* EDID version */
448	0x80, /* capabilities - digital */
449	0x00, /* horiz. res in cm, zero for projectors */
450	0x00, /* vert. res in cm */
451	0x78, /* display gamma (120 == 2.2). */
452	0xEE, /* features (standby, suspend, off, RGB, std */
453	/* colour space, preferred timing mode) */
454	0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
455	/* chromaticity for standard colour space. */
456	0x00, 0x00, 0x00, /* no default timings */
457	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
458	0x01, 0x01,
459	0x01, 0x01, 0x01, 0x01, /* no standard timings */
460	0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
461	0x02, 0x02,
462	/* descriptor block 1 goes below */
463	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
464	/* descriptor block 2, monitor ranges */
465	0x00, 0x00, 0x00, 0xFD, 0x00,
466	0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
467	0x20, 0x20,
468	/* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
469	0x20,
470	/* descriptor block 3, monitor name */
471	0x00, 0x00, 0x00, 0xFC, 0x00,
472	'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
473	'\n',
474	/* descriptor block 4: dummy data */
475	0x00, 0x00, 0x00, 0x10, 0x00,
476	0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
477	0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
478	0x20,
479	0x00, /* number of extensions */
480	0x00 /* checksum goes here */
481	};
482	int clock = (width + 6) * (height + 6) * 60 / 10000;
483	unsigned int i, sum = 0;
484
485	edid[12] = width & 0xff;
486	edid[13] = width >> 8;
487	edid[14] = height & 0xff;
488	edid[15] = height >> 8;
489	edid[54] = clock & 0xff;
490	edid[55] = clock >> 8;
491	edid[56] = width & 0xff;
492	edid[58] = (width >> 4) & 0xf0;
493	edid[59] = height & 0xff;
494	edid[61] = (height >> 4) & 0xf0;
495	for (i = 0; i < EDID_SIZE - 1; ++i)
496	sum += edid[i];
497	edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
498	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0)
499	drm_connector_update_edid_property(connector, (struct edid *)edid);
500	#else
501	drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
502	#endif
503	}
504
505	static int vbox_get_modes(struct drm_connector *connector)
506	{
507	struct vbox_connector *vbox_connector = NULL;
508	struct drm_display_mode *mode = NULL;
509	struct vbox_private *vbox = NULL;
510	unsigned int num_modes = 0;
511	int preferred_width, preferred_height;
512
513	vbox_connector = to_vbox_connector(connector);
514	vbox = connector->dev->dev_private;
515	/*
516	* Heuristic: we do not want to tell the host that we support dynamic
517	* resizing unless we feel confident that the user space client using
518	* the video driver can handle hot-plug events. So the first time modes
519	* are queried after a "master" switch we tell the host that we do not,
520	* and immediately after we send the client a hot-plug notification as
521	* a test to see if they will respond and query again.
522	* That is also the reason why capabilities are reported to the host at
523	* this place in the code rather than elsewhere.
524	* We need to report the flags location before reporting the IRQ
525	* capability.
526	*/
527	VBoxHGSMIReportFlagsLocation(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
528	HOST_FLAGS_OFFSET);
529	if (vbox_connector->vbox_crtc->crtc_id == 0)
530	vbox_report_caps(vbox);
531	if (!vbox->initial_mode_queried) {
532	if (vbox_connector->vbox_crtc->crtc_id == 0) {
533	vbox->initial_mode_queried = true;
534	vbox_report_hotplug(vbox);
535	}
536	return drm_add_modes_noedid(connector, 800, 600);
537	}
538	/* Also assume that a client which supports hot-plugging also knows
539	* how to update the screen in a way we can use, the only known
540	* relevent client which cannot is Plymouth in Ubuntu 14.04. */
541	vbox->need_refresh_timer = false;
542	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
543	preferred_width = vbox_connector->mode_hint.width ?
544	vbox_connector->mode_hint.width : 1024;
545	preferred_height = vbox_connector->mode_hint.height ?
546	vbox_connector->mode_hint.height : 768;
547	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
548	60, false, false, false);
549	if (mode) {
550	mode->type \|= DRM_MODE_TYPE_PREFERRED;
551	drm_mode_probed_add(connector, mode);
552	++num_modes;
553	}
554	vbox_set_edid(connector, preferred_width, preferred_height);
555
556	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) \|\| defined(RHEL_72)
557	if (vbox_connector->vbox_crtc->x_hint != -1)
558	drm_object_property_set_value(&connector->base,
559	vbox->dev->mode_config.suggested_x_property,
560	vbox_connector->vbox_crtc->x_hint);
561	else
562	drm_object_property_set_value(&connector->base,
563	vbox->dev->mode_config.suggested_x_property, 0);
564
565	if (vbox_connector->vbox_crtc->y_hint != -1)
566	drm_object_property_set_value(&connector->base,
567	vbox->dev->mode_config.suggested_y_property,
568	vbox_connector->vbox_crtc->y_hint);
569	else
570	drm_object_property_set_value(&connector->base,
571	vbox->dev->mode_config.suggested_y_property, 0);
572	#endif
573
574	return num_modes;
575	}
576
577	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0) && !defined(RHEL_71)
578	static int vbox_mode_valid(struct drm_connector *connector,
579	#else
580	static enum drm_mode_status vbox_mode_valid(struct drm_connector *connector,
581	#endif
582	struct drm_display_mode *mode)
583	{
584	return MODE_OK;
585	}
586
587	static void vbox_connector_destroy(struct drm_connector *connector)
588	{
589	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(RHEL_72)
590	drm_sysfs_connector_remove(connector);
591	#else
592	drm_connector_unregister(connector);
593	#endif
594	drm_connector_cleanup(connector);
595	kfree(connector);
596	}
597
598	static enum drm_connector_status
599	vbox_connector_detect(struct drm_connector *connector, bool force)
600	{
601	struct vbox_connector *vbox_connector;
602
603	vbox_connector = to_vbox_connector(connector);
604
605	return vbox_connector->mode_hint.disconnected ?
606	connector_status_disconnected : connector_status_connected;
607	}
608
609	static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
610	u32 max_y)
611	{
612	struct vbox_connector *vbox_connector;
613	struct drm_device *dev;
614	struct drm_display_mode mode, iterator;
615
616	vbox_connector = to_vbox_connector(connector);
617	dev = vbox_connector->base.dev;
618	list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
619	list_del(&mode->head);
620	drm_mode_destroy(dev, mode);
621	}
622
623	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
624	}
625
626	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
627	.mode_valid = vbox_mode_valid,
628	.get_modes = vbox_get_modes,
629	.best_encoder = vbox_best_single_encoder,
630	};
631
632	static const struct drm_connector_funcs vbox_connector_funcs = {
633	.dpms = drm_helper_connector_dpms,
634	.detect = vbox_connector_detect,
635	.fill_modes = vbox_fill_modes,
636	.destroy = vbox_connector_destroy,
637	};
638
639	static int vbox_connector_init(struct drm_device *dev,
640	struct vbox_crtc *vbox_crtc,
641	struct drm_encoder *encoder)
642	{
643	struct vbox_connector *vbox_connector;
644	struct drm_connector *connector;
645
646	vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
647	if (!vbox_connector)
648	return -ENOMEM;
649
650	connector = &vbox_connector->base;
651	vbox_connector->vbox_crtc = vbox_crtc;
652
653	drm_connector_init(dev, connector, &vbox_connector_funcs,
654	DRM_MODE_CONNECTOR_VGA);
655	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
656
657	connector->interlace_allowed = 0;
658	connector->doublescan_allowed = 0;
659
660	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) \|\| defined(RHEL_72)
661	drm_mode_create_suggested_offset_properties(dev);
662	drm_object_attach_property(&connector->base,
663	dev->mode_config.suggested_x_property, 0);
664	drm_object_attach_property(&connector->base,
665	dev->mode_config.suggested_y_property, 0);
666	#endif
667	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(RHEL_72)
668	drm_sysfs_connector_add(connector);
669	#else
670	drm_connector_register(connector);
671	#endif
672
673	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0)
674	drm_connector_attach_encoder(connector, encoder);
675	#else
676	drm_mode_connector_attach_encoder(connector, encoder);
677	#endif
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 int i;
688	int ret;
689
690	/* vbox_cursor_init(dev); */
691	for (i = 0; i < vbox->num_crtcs; ++i) {
692	vbox_crtc = vbox_crtc_init(dev, i);
693	if (!vbox_crtc)
694	return -ENOMEM;
695	encoder = vbox_encoder_init(dev, i);
696	if (!encoder)
697	return -ENOMEM;
698	ret = vbox_connector_init(dev, vbox_crtc, encoder);
699	if (ret)
700	return ret;
701	}
702
703	return 0;
704	}
705
706	void vbox_mode_fini(struct drm_device *dev)
707	{
708	/* vbox_cursor_fini(dev); */
709	}
710
711	/**
712	* Copy the ARGB image and generate the mask, which is needed in case the host
713	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
714	* if the corresponding alpha value in the ARGB image is greater than 0xF0.
715	*/
716	static void copy_cursor_image(u8 src, u8 dst, u32 width, u32 height,
717	size_t mask_size)
718	{
719	size_t line_size = (width + 7) / 8;
720	u32 i, j;
721
722	memcpy(dst + mask_size, src, width * height * 4);
723	for (i = 0; i < height; ++i)
724	for (j = 0; j < width; ++j)
725	if (((u32 )src)[i width + j] > 0xf0000000)
726	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
727	}
728
729	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
730	u32 handle, u32 width, u32 height,
731	s32 hot_x, s32 hot_y)
732	{
733	struct vbox_private *vbox = crtc->dev->dev_private;
734	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
735	struct ttm_bo_kmap_obj uobj_map;
736	size_t data_size, mask_size;
737	struct drm_gem_object *obj;
738	u32 flags, caps = 0;
739	struct vbox_bo *bo;
740	bool src_isiomem;
741	u8 *dst = NULL;
742	u8 *src;
743	int ret;
744
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,
752	head) {
753	if (to_vbox_crtc(crtci)->cursor_enabled)
754	cursor_enabled = true;
755	}
756
757	if (!cursor_enabled)
758	VBoxHGSMIUpdatePointerShape(vbox->guest_pool, 0, 0, 0,
759	0, 0, NULL, 0);
760	return 0;
761	}
762
763	vbox_crtc->cursor_enabled = true;
764
765	if (width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT \|\|
766	width == 0 \|\| height == 0)
767	return -EINVAL;
768	ret = VBoxQueryConfHGSMI(vbox->guest_pool,
769	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
770	if (ret)
771	return ret == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
772
773	if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
774	/*
775	* -EINVAL means cursor_set2() not supported, -EAGAIN means
776	* retry at once.
777	*/
778	return -EBUSY;
779	}
780
781	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0) \|\| defined(RHEL_74)
782	obj = drm_gem_object_lookup(file_priv, handle);
783	#else
784	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
785	#endif
786	if (!obj) {
787	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
788	return -ENOENT;
789	}
790
791	bo = gem_to_vbox_bo(obj);
792	ret = vbox_bo_reserve(bo, false);
793	if (ret)
794	goto out_unref_obj;
795
796	/*
797	* The mask must be calculated based on the alpha
798	* channel, one bit per ARGB word, and must be 32-bit
799	* padded.
800	*/
801	mask_size = ((width + 7) / 8 * height + 3) & ~3;
802	data_size = width * height * 4 + mask_size;
803	vbox->cursor_hot_x = hot_x;
804	vbox->cursor_hot_y = hot_y;
805	vbox->cursor_width = width;
806	vbox->cursor_height = height;
807	vbox->cursor_data_size = data_size;
808	dst = vbox->cursor_data;
809
810	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
811	if (ret) {
812	vbox->cursor_data_size = 0;
813	goto out_unreserve_bo;
814	}
815
816	src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
817	if (src_isiomem) {
818	DRM_ERROR("src cursor bo not in main memory\n");
819	ret = -EIO;
820	goto out_unmap_bo;
821	}
822
823	copy_cursor_image(src, dst, width, height, mask_size);
824
825	flags = VBOX_MOUSE_POINTER_VISIBLE \| VBOX_MOUSE_POINTER_SHAPE \|
826	VBOX_MOUSE_POINTER_ALPHA;
827	ret = VBoxHGSMIUpdatePointerShape(vbox->guest_pool, flags,
828	vbox->cursor_hot_x, vbox->cursor_hot_y,
829	width, height, dst, data_size);
830	ret = ret == VINF_SUCCESS ? 0 : ret == VERR_NO_MEMORY ? -ENOMEM :
831	ret == VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL;
832
833	out_unmap_bo:
834	ttm_bo_kunmap(&uobj_map);
835	out_unreserve_bo:
836	vbox_bo_unreserve(bo);
837	out_unref_obj:
838	drm_gem_object_put_unlocked(obj);
839
840	return ret;
841	}
842
843	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
844	{
845	struct vbox_private *vbox = crtc->dev->dev_private;
846	s32 crtc_x =
847	vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
848	s32 crtc_y =
849	vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
850	int ret;
851
852	x += vbox->cursor_hot_x;
853	y += vbox->cursor_hot_y;
854	if (x + crtc_x < 0 \|\| y + crtc_y < 0 \|\|
855	x + crtc_x >= vbox->input_mapping_width \|\|
856	y + crtc_y >= vbox->input_mapping_width \|\|
857	vbox->cursor_data_size == 0)
858	return 0;
859	ret = VBoxHGSMICursorPosition(vbox->guest_pool, true, x + crtc_x,
860	y + crtc_y, NULL, NULL);
861	return ret == VINF_SUCCESS ? 0 : ret == VERR_NO_MEMORY ? -ENOMEM : ret ==
862	VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL;
863	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 76978

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