vbox_mode.c@ 69922

Last change on this file since 69922 was 69748, checked in by vboxsync, 7 years ago

Additions/linux/drm: set up fbdev fix information correctly.
bugref:4567: Linux kernel driver maintenance

For historical reasons we were setting up the fbdev fix information
completely wrongly, and too late to boot. I discovered this when we started
having occasional oopses at boot, and hope that I fixed both problems in this
change.

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

File size: 27.0 KB

Line
1	/* $Id: vbox_mode.c 69748 2017-11-18 20:56:56Z 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 <airlied@redhat.com>
36	* Michael Thayer <michael.thayer@oracle.com,
37	* Hans de Goede <hdegoede@redhat.com>
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_dpms(struct drm_crtc *crtc, int mode)
155	{
156	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
157	struct vbox_private *vbox = crtc->dev->dev_private;
158
159	switch (mode) {
160	case DRM_MODE_DPMS_ON:
161	vbox_crtc->blanked = false;
162	break;
163	case DRM_MODE_DPMS_STANDBY:
164	case DRM_MODE_DPMS_SUSPEND:
165	case DRM_MODE_DPMS_OFF:
166	vbox_crtc->blanked = true;
167	break;
168	}
169
170	mutex_lock(&vbox->hw_mutex);
171	vbox_do_modeset(crtc, &crtc->hwmode);
172	mutex_unlock(&vbox->hw_mutex);
173	}
174
175	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
176	const struct drm_display_mode *mode,
177	struct drm_display_mode *adjusted_mode)
178	{
179	return true;
180	}
181
182	/*
183	* Try to map the layout of virtual screens to the range of the input device.
184	* Return true if we need to re-set the crtc modes due to screen offset
185	* changes.
186	*/
187	static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
188	{
189	struct drm_crtc *crtci;
190	struct drm_connector *connectori;
191	struct drm_framebuffer *fb1 = NULL;
192	bool single_framebuffer = true;
193	bool old_single_framebuffer = vbox->single_framebuffer;
194	u16 width = 0, height = 0;
195
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	*/
201	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
202	if (!fb1) {
203	fb1 = CRTC_FB(crtci);
204	if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
205	break;
206	} else if (CRTC_FB(crtci) && fb1 != CRTC_FB(crtci)) {
207	single_framebuffer = false;
208	}
209	}
210	if (single_framebuffer) {
211	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
212	head) {
213	if (to_vbox_crtc(crtci)->crtc_id == 0) {
214	vbox->single_framebuffer = true;
215	vbox->input_mapping_width =
216	CRTC_FB(crtci)->width;
217	vbox->input_mapping_height =
218	CRTC_FB(crtci)->height;
219	return old_single_framebuffer !=
220	vbox->single_framebuffer;
221	}
222	}
223	}
224	/* Otherwise calculate the total span of all screens. */
225	list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list,
226	head) {
227	struct vbox_connector *vbox_connector =
228	to_vbox_connector(connectori);
229	struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
230
231	width = max_t(u16, width, vbox_crtc->x_hint +
232	vbox_connector->mode_hint.width);
233	height = max_t(u16, height, vbox_crtc->y_hint +
234	vbox_connector->mode_hint.height);
235	}
236
237	vbox->single_framebuffer = false;
238	vbox->input_mapping_width = width;
239	vbox->input_mapping_height = height;
240
241	return old_single_framebuffer != vbox->single_framebuffer;
242	}
243
244	static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
245	struct drm_framebuffer *old_fb, int x, int y)
246	{
247	struct vbox_private *vbox = crtc->dev->dev_private;
248	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
249	struct drm_gem_object *obj;
250	struct vbox_framebuffer *vbox_fb;
251	struct vbox_bo *bo;
252	int ret;
253	u64 gpu_addr;
254
255	/* Unpin the previous fb. */
256	if (old_fb) {
257	vbox_fb = to_vbox_framebuffer(old_fb);
258	obj = vbox_fb->obj;
259	bo = gem_to_vbox_bo(obj);
260	ret = vbox_bo_reserve(bo, false);
261	if (ret)
262	return ret;
263
264	vbox_bo_unpin(bo);
265	vbox_bo_unreserve(bo);
266	}
267
268	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
269	obj = vbox_fb->obj;
270	bo = gem_to_vbox_bo(obj);
271
272	ret = vbox_bo_reserve(bo, false);
273	if (ret)
274	return ret;
275
276	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
277	vbox_bo_unreserve(bo);
278	if (ret)
279	return ret;
280
281	vbox_crtc->fb_offset = gpu_addr;
282	if (vbox_set_up_input_mapping(vbox)) {
283	struct drm_crtc *crtci;
284
285	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
286	head) {
287	vbox_set_view(crtc);
288	vbox_do_modeset(crtci, &crtci->mode);
289	}
290	}
291
292	return 0;
293	}
294
295	static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
296	struct drm_framebuffer *old_fb)
297	{
298	return vbox_crtc_do_set_base(crtc, old_fb, x, y);
299	}
300
301	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
302	struct drm_display_mode *mode,
303	struct drm_display_mode *adjusted_mode,
304	int x, int y, struct drm_framebuffer *old_fb)
305	{
306	struct vbox_private *vbox = crtc->dev->dev_private;
307	int rc = 0;
308
309	vbox_crtc_mode_set_base(crtc, x, y, old_fb);
310
311	mutex_lock(&vbox->hw_mutex);
312	rc = vbox_set_view(crtc);
313	if (!rc)
314	vbox_do_modeset(crtc, mode);
315	VBoxHGSMIUpdateInputMapping(vbox->guest_pool, 0, 0,
316	vbox->input_mapping_width,
317	vbox->input_mapping_height);
318	mutex_unlock(&vbox->hw_mutex);
319
320	return rc;
321	}
322
323	static void vbox_crtc_disable(struct drm_crtc *crtc)
324	{
325	}
326
327	static void vbox_crtc_prepare(struct drm_crtc *crtc)
328	{
329	}
330
331	static void vbox_crtc_commit(struct drm_crtc *crtc)
332	{
333	}
334
335	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
336	.dpms = vbox_crtc_dpms,
337	.mode_fixup = vbox_crtc_mode_fixup,
338	.mode_set = vbox_crtc_mode_set,
339	/* .mode_set_base = vbox_crtc_mode_set_base, */
340	.disable = vbox_crtc_disable,
341	.prepare = vbox_crtc_prepare,
342	.commit = vbox_crtc_commit,
343	};
344
345	static void vbox_crtc_reset(struct drm_crtc *crtc)
346	{
347	}
348
349	static void vbox_crtc_destroy(struct drm_crtc *crtc)
350	{
351	drm_crtc_cleanup(crtc);
352	kfree(crtc);
353	}
354
355	static const struct drm_crtc_funcs vbox_crtc_funcs = {
356	.cursor_move = vbox_cursor_move,
357	.cursor_set2 = vbox_cursor_set2,
358	.reset = vbox_crtc_reset,
359	.set_config = drm_crtc_helper_set_config,
360	/* .gamma_set = vbox_crtc_gamma_set, */
361	.destroy = vbox_crtc_destroy,
362	};
363
364	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned int i)
365	{
366	struct vbox_crtc *vbox_crtc;
367
368	vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
369	if (!vbox_crtc)
370	return NULL;
371
372	vbox_crtc->crtc_id = i;
373
374	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
375	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
376	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
377
378	return vbox_crtc;
379	}
380
381	static void vbox_encoder_destroy(struct drm_encoder *encoder)
382	{
383	drm_encoder_cleanup(encoder);
384	kfree(encoder);
385	}
386
387	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0) && !defined(RHEL_73)
388	static struct drm_encoder drm_encoder_find(struct drm_device dev, u32 id)
389	{
390	struct drm_mode_object *mo;
391
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
398	*connector)
399	{
400	int enc_id = connector->encoder_ids[0];
401
402	/* pick the encoder ids */
403	if (enc_id)
404	return drm_encoder_find(connector->dev, enc_id);
405
406	return NULL;
407	}
408
409	static const struct drm_encoder_funcs vbox_enc_funcs = {
410	.destroy = vbox_encoder_destroy,
411	};
412
413	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
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	static void vbox_encoder_commit(struct drm_encoder *encoder)
435	{
436	}
437
438	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
439	.dpms = vbox_encoder_dpms,
440	.mode_fixup = vbox_mode_fixup,
441	.prepare = vbox_encoder_prepare,
442	.commit = vbox_encoder_commit,
443	.mode_set = vbox_encoder_mode_set,
444	};
445
446	static struct drm_encoder vbox_encoder_init(struct drm_device dev,
447	unsigned int i)
448	{
449	struct vbox_encoder *vbox_encoder;
450
451	vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
452	if (!vbox_encoder)
453	return NULL;
454
455	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
456	DRM_MODE_ENCODER_DAC
457	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0) \|\| defined(RHEL_73)
458	, NULL
459	#endif
460	);
461	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
462
463	vbox_encoder->base.possible_crtcs = 1 << i;
464	return &vbox_encoder->base;
465	}
466
467	/**
468	* Generate EDID data with a mode-unique serial number for the virtual
469	* monitor to try to persuade Unity that different modes correspond to
470	* different monitors and it should not try to force the same resolution on
471	* them.
472	*/
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, std */
490	/* colour space, 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,
495	0x01, 0x01,
496	0x01, 0x01, 0x01, 0x01, /* no standard timings */
497	0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
498	0x02, 0x02,
499	/* descriptor block 1 goes below */
500	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
501	/* descriptor block 2, monitor ranges */
502	0x00, 0x00, 0x00, 0xFD, 0x00,
503	0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
504	0x20, 0x20,
505	/* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
506	0x20,
507	/* descriptor block 3, monitor name */
508	0x00, 0x00, 0x00, 0xFC, 0x00,
509	'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
510	'\n',
511	/* descriptor block 4: dummy data */
512	0x00, 0x00, 0x00, 0x10, 0x00,
513	0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
514	0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
515	0x20,
516	0x00, /* number of extensions */
517	0x00 /* checksum goes here */
518	};
519	int clock = (width + 6) * (height + 6) * 60 / 10000;
520	unsigned int i, sum = 0;
521
522	edid[12] = width & 0xff;
523	edid[13] = width >> 8;
524	edid[14] = height & 0xff;
525	edid[15] = height >> 8;
526	edid[54] = clock & 0xff;
527	edid[55] = clock >> 8;
528	edid[56] = width & 0xff;
529	edid[58] = (width >> 4) & 0xf0;
530	edid[59] = height & 0xff;
531	edid[61] = (height >> 4) & 0xf0;
532	for (i = 0; i < EDID_SIZE - 1; ++i)
533	sum += edid[i];
534	edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
535	drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
536	}
537
538	static int vbox_get_modes(struct drm_connector *connector)
539	{
540	struct vbox_connector *vbox_connector = NULL;
541	struct drm_display_mode *mode = NULL;
542	struct vbox_private *vbox = NULL;
543	unsigned int num_modes = 0;
544	int preferred_width, preferred_height;
545
546	vbox_connector = to_vbox_connector(connector);
547	vbox = connector->dev->dev_private;
548	/*
549	* Heuristic: we do not want to tell the host that we support dynamic
550	* resizing unless we feel confident that the user space client using
551	* the video driver can handle hot-plug events. So the first time modes
552	* are queried after a "master" switch we tell the host that we do not,
553	* and immediately after we send the client a hot-plug notification as
554	* a test to see if they will respond and query again.
555	* That is also the reason why capabilities are reported to the host at
556	* this place in the code rather than elsewhere.
557	* We need to report the flags location before reporting the IRQ
558	* capability.
559	*/
560	VBoxHGSMIReportFlagsLocation(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
561	HOST_FLAGS_OFFSET);
562	if (vbox_connector->vbox_crtc->crtc_id == 0)
563	vbox_report_caps(vbox);
564	if (!vbox->initial_mode_queried) {
565	if (vbox_connector->vbox_crtc->crtc_id == 0) {
566	vbox->initial_mode_queried = true;
567	vbox_report_hotplug(vbox);
568	}
569	return drm_add_modes_noedid(connector, 800, 600);
570	}
571	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
572	preferred_width = vbox_connector->mode_hint.width ?
573	vbox_connector->mode_hint.width : 1024;
574	preferred_height = vbox_connector->mode_hint.height ?
575	vbox_connector->mode_hint.height : 768;
576	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
577	60, false, false, false);
578	if (mode) {
579	mode->type \|= DRM_MODE_TYPE_PREFERRED;
580	drm_mode_probed_add(connector, mode);
581	++num_modes;
582	}
583	vbox_set_edid(connector, preferred_width, preferred_height);
584
585	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) \|\| defined(RHEL_73)
586	if (vbox_connector->vbox_crtc->x_hint != -1)
587	drm_object_property_set_value(&connector->base,
588	vbox->dev->mode_config.suggested_x_property,
589	vbox_connector->vbox_crtc->x_hint);
590	else
591	drm_object_property_set_value(&connector->base,
592	vbox->dev->mode_config.suggested_x_property, 0);
593
594	if (vbox_connector->vbox_crtc->y_hint != -1)
595	drm_object_property_set_value(&connector->base,
596	vbox->dev->mode_config.suggested_y_property,
597	vbox_connector->vbox_crtc->y_hint);
598	else
599	drm_object_property_set_value(&connector->base,
600	vbox->dev->mode_config.suggested_y_property, 0);
601	#endif
602
603	return num_modes;
604	}
605
606	static int vbox_mode_valid(struct drm_connector *connector,
607	struct drm_display_mode *mode)
608	{
609	return MODE_OK;
610	}
611
612	static void vbox_connector_destroy(struct drm_connector *connector)
613	{
614	struct vbox_connector *vbox_connector = NULL;
615
616	vbox_connector = to_vbox_connector(connector);
617	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(RHEL_73)
618	drm_sysfs_connector_remove(connector);
619	#else
620	drm_connector_unregister(connector);
621	#endif
622	drm_connector_cleanup(connector);
623	kfree(connector);
624	}
625
626	static enum drm_connector_status
627	vbox_connector_detect(struct drm_connector *connector, bool force)
628	{
629	struct vbox_connector *vbox_connector = NULL;
630
631	(void)force;
632	vbox_connector = to_vbox_connector(connector);
633
634	return vbox_connector->mode_hint.disconnected ?
635	connector_status_disconnected : connector_status_connected;
636	}
637
638	static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
639	u32 max_y)
640	{
641	struct vbox_connector *vbox_connector;
642	struct drm_device *dev;
643	struct drm_display_mode mode, iterator;
644
645	vbox_connector = to_vbox_connector(connector);
646	dev = vbox_connector->base.dev;
647	list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
648	list_del(&mode->head);
649	drm_mode_destroy(dev, mode);
650	}
651
652	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
653	}
654
655	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
656	.mode_valid = vbox_mode_valid,
657	.get_modes = vbox_get_modes,
658	.best_encoder = vbox_best_single_encoder,
659	};
660
661	static const struct drm_connector_funcs vbox_connector_funcs = {
662	.dpms = drm_helper_connector_dpms,
663	.detect = vbox_connector_detect,
664	.fill_modes = vbox_fill_modes,
665	.destroy = vbox_connector_destroy,
666	};
667
668	static int vbox_connector_init(struct drm_device *dev,
669	struct vbox_crtc *vbox_crtc,
670	struct drm_encoder *encoder)
671	{
672	struct vbox_connector *vbox_connector;
673	struct drm_connector *connector;
674
675	vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
676	if (!vbox_connector)
677	return -ENOMEM;
678
679	connector = &vbox_connector->base;
680	vbox_connector->vbox_crtc = vbox_crtc;
681
682	drm_connector_init(dev, connector, &vbox_connector_funcs,
683	DRM_MODE_CONNECTOR_VGA);
684	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
685
686	connector->interlace_allowed = 0;
687	connector->doublescan_allowed = 0;
688
689	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) \|\| defined(RHEL_73)
690	drm_mode_create_suggested_offset_properties(dev);
691	drm_object_attach_property(&connector->base,
692	dev->mode_config.suggested_x_property, 0);
693	drm_object_attach_property(&connector->base,
694	dev->mode_config.suggested_y_property, 0);
695	#endif
696	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(RHEL_73)
697	drm_sysfs_connector_add(connector);
698	#else
699	drm_connector_register(connector);
700	#endif
701
702	drm_mode_connector_attach_encoder(connector, encoder);
703
704	return 0;
705	}
706
707	int vbox_mode_init(struct drm_device *dev)
708	{
709	struct vbox_private *vbox = dev->dev_private;
710	struct drm_encoder *encoder;
711	struct vbox_crtc *vbox_crtc;
712	unsigned int i;
713
714	/* vbox_cursor_init(dev); */
715	for (i = 0; i < vbox->num_crtcs; ++i) {
716	vbox_crtc = vbox_crtc_init(dev, i);
717	if (!vbox_crtc)
718	return -ENOMEM;
719	encoder = vbox_encoder_init(dev, i);
720	if (!encoder)
721	return -ENOMEM;
722	vbox_connector_init(dev, vbox_crtc, encoder);
723	}
724
725	return 0;
726	}
727
728	void vbox_mode_fini(struct drm_device *dev)
729	{
730	/* vbox_cursor_fini(dev); */
731	}
732
733	/**
734	* Copy the ARGB image and generate the mask, which is needed in case the host
735	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
736	* if the corresponding alpha value in the ARGB image is greater than 0xF0.
737	*/
738	static void copy_cursor_image(u8 src, u8 dst, u32 width, u32 height,
739	size_t mask_size)
740	{
741	size_t line_size = (width + 7) / 8;
742	u32 i, j;
743
744	memcpy(dst + mask_size, src, width * height * 4);
745	for (i = 0; i < height; ++i)
746	for (j = 0; j < width; ++j)
747	if (((u32 )src)[i width + j] > 0xf0000000)
748	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
749	}
750
751	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
752	u32 handle, u32 width, u32 height,
753	s32 hot_x, s32 hot_y)
754	{
755	struct vbox_private *vbox = crtc->dev->dev_private;
756	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
757	struct drm_gem_object *obj;
758	struct vbox_bo *bo;
759	int ret, rc;
760	struct ttm_bo_kmap_obj uobj_map;
761	u8 *src;
762	u8 *dst = NULL;
763	u32 caps = 0;
764	size_t data_size, mask_size;
765	bool src_isiomem;
766
767	/*
768	* Re-set this regularly as in 5.0.20 and earlier the information was
769	* lost on save and restore.
770	*/
771	VBoxHGSMIUpdateInputMapping(vbox->guest_pool, 0, 0,
772	vbox->input_mapping_width,
773	vbox->input_mapping_height);
774	if (!handle) {
775	bool cursor_enabled = false;
776	struct drm_crtc *crtci;
777
778	/* Hide cursor. */
779	vbox_crtc->cursor_enabled = false;
780	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
781	head)
782	if (to_vbox_crtc(crtci)->cursor_enabled)
783	cursor_enabled = true;
784
785	if (!cursor_enabled)
786	VBoxHGSMIUpdatePointerShape(vbox->guest_pool, 0, 0, 0,
787	0, 0, NULL, 0);
788	return 0;
789	}
790	vbox_crtc->cursor_enabled = true;
791	if (width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT \|\|
792	width == 0 \|\| height == 0)
793	return -EINVAL;
794	rc = VBoxQueryConfHGSMI(vbox->guest_pool,
795	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
796	ret = rc == VINF_SUCCESS ? 0 : rc == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
797	if (ret)
798	return ret;
799
800	if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE))
801	/*
802	* -EINVAL means cursor_set2() not supported, -EAGAIN means
803	* retry at once.
804	*/
805	return -EBUSY;
806
807	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0) \|\| defined(RHEL_74)
808	obj = drm_gem_object_lookup(file_priv, handle);
809	#else
810	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
811	#endif
812	if (obj) {
813	bo = gem_to_vbox_bo(obj);
814	ret = vbox_bo_reserve(bo, false);
815	if (!ret) {
816	/*
817	* The mask must be calculated based on the alpha
818	* channel, one bit per ARGB word, and must be 32-bit
819	* padded.
820	*/
821	mask_size = ((width + 7) / 8 * height + 3) & ~3;
822	data_size = width * height * 4 + mask_size;
823	vbox->cursor_hot_x = min_t(u32, max(hot_x, 0), width);
824	vbox->cursor_hot_y = min_t(u32, max(hot_y, 0), height);
825	vbox->cursor_width = width;
826	vbox->cursor_height = height;
827	vbox->cursor_data_size = data_size;
828	dst = vbox->cursor_data;
829	ret =
830	ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages,
831	&uobj_map);
832	if (!ret) {
833	src =
834	ttm_kmap_obj_virtual(&uobj_map,
835	&src_isiomem);
836	if (!src_isiomem) {
837	u32 flags =
838	VBOX_MOUSE_POINTER_VISIBLE \|
839	VBOX_MOUSE_POINTER_SHAPE \|
840	VBOX_MOUSE_POINTER_ALPHA;
841	copy_cursor_image(src, dst, width,
842	height, mask_size);
843	rc = VBoxHGSMIUpdatePointerShape(
844	vbox->guest_pool, flags,
845	vbox->cursor_hot_x,
846	vbox->cursor_hot_y,
847	width, height, dst, data_size);
848	ret =
849	rc == VINF_SUCCESS ? 0 : rc ==
850	VERR_NO_MEMORY ? -ENOMEM : rc ==
851	VERR_NOT_SUPPORTED ? -EBUSY :
852	-EINVAL;
853	} else {
854	DRM_ERROR("src cursor bo should be in main memory\n");
855	}
856	ttm_bo_kunmap(&uobj_map);
857	} else {
858	vbox->cursor_data_size = 0;
859	}
860	vbox_bo_unreserve(bo);
861	}
862	drm_gem_object_unreference_unlocked(obj);
863	} else {
864	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
865	ret = -ENOENT;
866	}
867
868	return ret;
869	}
870
871	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
872	{
873	struct vbox_private *vbox = crtc->dev->dev_private;
874	u32 flags = VBOX_MOUSE_POINTER_VISIBLE \|
875	VBOX_MOUSE_POINTER_SHAPE \| VBOX_MOUSE_POINTER_ALPHA;
876	s32 crtc_x =
877	vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
878	s32 crtc_y =
879	vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
880	u32 host_x, host_y;
881	u32 hot_x = 0;
882	u32 hot_y = 0;
883	int rc;
884
885	/*
886	* We compare these to unsigned later and don't
887	* need to handle negative.
888	*/
889	if (x + crtc_x < 0 \|\| y + crtc_y < 0 \|\| vbox->cursor_data_size == 0)
890	return 0;
891
892	rc = VBoxHGSMICursorPosition(vbox->guest_pool, true, x + crtc_x,
893	y + crtc_y, &host_x, &host_y);
894	/* Work around a bug after save and restore in 5.0.20 and earlier. */
895	if (RT_FAILURE(rc) \|\| (host_x == 0 && host_y == 0))
896	return rc == VINF_SUCCESS ? 0
897	: rc == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
898	if (x + crtc_x < host_x)
899	hot_x = min(host_x - x - crtc_x, vbox->cursor_width);
900	if (y + crtc_y < host_y)
901	hot_y = min(host_y - y - crtc_y, vbox->cursor_height);
902	if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
903	return 0;
904	vbox->cursor_hot_x = hot_x;
905	vbox->cursor_hot_y = hot_y;
906	rc = VBoxHGSMIUpdatePointerShape(vbox->guest_pool, flags, hot_x, hot_y,
907	vbox->cursor_width,
908	vbox->cursor_height, vbox->cursor_data,
909	vbox->cursor_data_size);
910	return rc == VINF_SUCCESS ? 0 : rc == VERR_NO_MEMORY ? -ENOMEM : rc ==
911	VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL;
912	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 69922

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