vbox_mode.c@ 74642

Last change on this file since 74642 was 74625, checked in by vboxsync, 6 years ago
Additions/linux/vboxvideo: fix building on EL 7 minor release 1. bugref:4567: Linux kernel driver maintenance
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 26.6 KB

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1	/* $Id: vbox_mode.c 74625 2018-10-05 07:00:43Z 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_72)
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) \|\| defined(RHEL_75)
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) \|\| defined(RHEL_75)
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	/* Restart the refresh timer if necessary. */
163	schedule_delayed_work(&vbox->refresh_work, VBOX_REFRESH_PERIOD);
164	break;
165	case DRM_MODE_DPMS_STANDBY:
166	case DRM_MODE_DPMS_SUSPEND:
167	case DRM_MODE_DPMS_OFF:
168	vbox_crtc->blanked = true;
169	break;
170	}
171
172	mutex_lock(&vbox->hw_mutex);
173	vbox_do_modeset(crtc, &crtc->hwmode);
174	mutex_unlock(&vbox->hw_mutex);
175	}
176
177	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
178	const struct drm_display_mode *mode,
179	struct drm_display_mode *adjusted_mode)
180	{
181	return true;
182	}
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	*/
189	static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
190	{
191	struct drm_crtc *crtci;
192	struct drm_connector *connectori;
193	struct drm_framebuffer *fb1 = NULL;
194	bool single_framebuffer = true;
195	bool old_single_framebuffer = vbox->single_framebuffer;
196	u16 width = 0, height = 0;
197
198	/*
199	* Are we using an X.Org-style single large frame-buffer for all crtcs?
200	* If so then screen layout can be deduced from the crtc offsets.
201	* Same fall-back if this is the fbdev frame-buffer.
202	*/
203	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
204	if (!fb1) {
205	fb1 = CRTC_FB(crtci);
206	if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
207	break;
208	} else if (CRTC_FB(crtci) && fb1 != CRTC_FB(crtci)) {
209	single_framebuffer = false;
210	}
211	}
212	if (single_framebuffer) {
213	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
214	head) {
215	if (to_vbox_crtc(crtci)->crtc_id == 0) {
216	vbox->single_framebuffer = true;
217	vbox->input_mapping_width =
218	CRTC_FB(crtci)->width;
219	vbox->input_mapping_height =
220	CRTC_FB(crtci)->height;
221	return old_single_framebuffer !=
222	vbox->single_framebuffer;
223	}
224	}
225	}
226	/* Otherwise calculate the total span of all screens. */
227	list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list,
228	head) {
229	struct vbox_connector *vbox_connector =
230	to_vbox_connector(connectori);
231	struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
232
233	width = max_t(u16, width, vbox_crtc->x_hint +
234	vbox_connector->mode_hint.width);
235	height = max_t(u16, height, vbox_crtc->y_hint +
236	vbox_connector->mode_hint.height);
237	}
238
239	vbox->single_framebuffer = false;
240	vbox->input_mapping_width = width;
241	vbox->input_mapping_height = height;
242
243	return old_single_framebuffer != vbox->single_framebuffer;
244	}
245
246	static int vbox_crtc_set_base(struct drm_crtc *crtc,
247	struct drm_framebuffer *old_fb, int x, int y)
248	{
249	struct vbox_private *vbox = crtc->dev->dev_private;
250	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
251	struct drm_gem_object *obj;
252	struct vbox_framebuffer *vbox_fb;
253	struct vbox_bo *bo;
254	int ret;
255	u64 gpu_addr;
256
257	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
258	obj = vbox_fb->obj;
259	bo = gem_to_vbox_bo(obj);
260
261	ret = vbox_bo_reserve(bo, false);
262	if (ret)
263	return ret;
264
265	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
266	vbox_bo_unreserve(bo);
267	if (ret)
268	return ret;
269
270	/* Unpin the previous fb. Do this after the new one has been pinned rather
271	* than before and re-pinning it on failure in case that fails too. */
272	if (old_fb) {
273	vbox_fb = to_vbox_framebuffer(old_fb);
274	obj = vbox_fb->obj;
275	bo = gem_to_vbox_bo(obj);
276	ret = vbox_bo_reserve(bo, false);
277	/* This should never fail, as no one else should be accessing it and we
278	* should be running under the modeset locks. */
279	if (!ret) {
280	vbox_bo_unpin(bo);
281	vbox_bo_unreserve(bo);
282	}
283	}
284
285	vbox_crtc->fb_offset = gpu_addr;
286	if (vbox_set_up_input_mapping(vbox)) {
287	struct drm_crtc *crtci;
288
289	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
290	head) {
291	vbox_set_view(crtc);
292	vbox_do_modeset(crtci, &crtci->mode);
293	}
294	}
295
296	return 0;
297	}
298
299	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
300	struct drm_display_mode *mode,
301	struct drm_display_mode *adjusted_mode,
302	int x, int y, struct drm_framebuffer *old_fb)
303	{
304	struct vbox_private *vbox = crtc->dev->dev_private;
305	int rc = vbox_crtc_set_base(crtc, old_fb, x, y);
306	if (rc)
307	return rc;
308	mutex_lock(&vbox->hw_mutex);
309	rc = vbox_set_view(crtc);
310	if (!rc)
311	vbox_do_modeset(crtc, mode);
312	VBoxHGSMIUpdateInputMapping(vbox->guest_pool, 0, 0,
313	vbox->input_mapping_width,
314	vbox->input_mapping_height);
315	mutex_unlock(&vbox->hw_mutex);
316
317	return rc;
318	}
319
320	static void vbox_crtc_disable(struct drm_crtc *crtc)
321	{
322	}
323
324	static void vbox_crtc_prepare(struct drm_crtc *crtc)
325	{
326	}
327
328	static void vbox_crtc_commit(struct drm_crtc *crtc)
329	{
330	}
331
332	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
333	.dpms = vbox_crtc_dpms,
334	.mode_fixup = vbox_crtc_mode_fixup,
335	.mode_set = vbox_crtc_mode_set,
336	.disable = vbox_crtc_disable,
337	.prepare = vbox_crtc_prepare,
338	.commit = vbox_crtc_commit,
339	};
340
341	static void vbox_crtc_reset(struct drm_crtc *crtc)
342	{
343	}
344
345	static void vbox_crtc_destroy(struct drm_crtc *crtc)
346	{
347	drm_crtc_cleanup(crtc);
348	kfree(crtc);
349	}
350
351	static const struct drm_crtc_funcs vbox_crtc_funcs = {
352	.cursor_move = vbox_cursor_move,
353	.cursor_set2 = vbox_cursor_set2,
354	.reset = vbox_crtc_reset,
355	.set_config = drm_crtc_helper_set_config,
356	/* .gamma_set = vbox_crtc_gamma_set, */
357	.destroy = vbox_crtc_destroy,
358	};
359
360	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned int i)
361	{
362	struct vbox_crtc *vbox_crtc;
363
364	vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
365	if (!vbox_crtc)
366	return NULL;
367
368	vbox_crtc->crtc_id = i;
369
370	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
371	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
372	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
373
374	return vbox_crtc;
375	}
376
377	static void vbox_encoder_destroy(struct drm_encoder *encoder)
378	{
379	drm_encoder_cleanup(encoder);
380	kfree(encoder);
381	}
382
383	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0) && !defined(RHEL_71)
384	static struct drm_encoder drm_encoder_find(struct drm_device dev, u32 id)
385	{
386	struct drm_mode_object *mo;
387
388	mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
389	return mo ? obj_to_encoder(mo) : NULL;
390	}
391	#endif
392
393	static struct drm_encoder *vbox_best_single_encoder(struct drm_connector
394	*connector)
395	{
396	int enc_id = connector->encoder_ids[0];
397
398	/* pick the encoder ids */
399	if (enc_id)
400	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0) \|\| \
401	(defined(CONFIG_SUSE_VERSION) && CONFIG_SUSE_VERSION == 15)
402	return drm_encoder_find(connector->dev, NULL, enc_id);
403	#else
404	return drm_encoder_find(connector->dev, enc_id);
405	#endif
406
407	return NULL;
408	}
409
410	static const struct drm_encoder_funcs vbox_enc_funcs = {
411	.destroy = vbox_encoder_destroy,
412	};
413
414	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
415	{
416	}
417
418	static bool vbox_mode_fixup(struct drm_encoder *encoder,
419	const struct drm_display_mode *mode,
420	struct drm_display_mode *adjusted_mode)
421	{
422	return true;
423	}
424
425	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
426	struct drm_display_mode *mode,
427	struct drm_display_mode *adjusted_mode)
428	{
429	}
430
431	static void vbox_encoder_prepare(struct drm_encoder *encoder)
432	{
433	}
434
435	static void vbox_encoder_commit(struct drm_encoder *encoder)
436	{
437	}
438
439	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
440	.dpms = vbox_encoder_dpms,
441	.mode_fixup = vbox_mode_fixup,
442	.prepare = vbox_encoder_prepare,
443	.commit = vbox_encoder_commit,
444	.mode_set = vbox_encoder_mode_set,
445	};
446
447	static struct drm_encoder vbox_encoder_init(struct drm_device dev,
448	unsigned int i)
449	{
450	struct vbox_encoder *vbox_encoder;
451
452	vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
453	if (!vbox_encoder)
454	return NULL;
455
456	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
457	DRM_MODE_ENCODER_DAC
458	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0) \|\| defined(RHEL_73)
459	, NULL
460	#endif
461	);
462	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
463
464	vbox_encoder->base.possible_crtcs = 1 << i;
465	return &vbox_encoder->base;
466	}
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	*/
474	static void vbox_set_edid(struct drm_connector *connector, int width,
475	int height)
476	{
477	enum { EDID_SIZE = 128 };
478	unsigned char edid[EDID_SIZE] = {
479	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
480	0x58, 0x58, /* manufacturer (VBX) */
481	0x00, 0x00, /* product code */
482	0x00, 0x00, 0x00, 0x00, /* serial number goes here */
483	0x01, /* week of manufacture */
484	0x00, /* year of manufacture */
485	0x01, 0x03, /* EDID version */
486	0x80, /* capabilities - digital */
487	0x00, /* horiz. res in cm, zero for projectors */
488	0x00, /* vert. res in cm */
489	0x78, /* display gamma (120 == 2.2). */
490	0xEE, /* features (standby, suspend, off, RGB, std */
491	/* colour space, preferred timing mode) */
492	0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
493	/* chromaticity for standard colour space. */
494	0x00, 0x00, 0x00, /* no default timings */
495	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
496	0x01, 0x01,
497	0x01, 0x01, 0x01, 0x01, /* no standard timings */
498	0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
499	0x02, 0x02,
500	/* descriptor block 1 goes below */
501	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
502	/* descriptor block 2, monitor ranges */
503	0x00, 0x00, 0x00, 0xFD, 0x00,
504	0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
505	0x20, 0x20,
506	/* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
507	0x20,
508	/* descriptor block 3, monitor name */
509	0x00, 0x00, 0x00, 0xFC, 0x00,
510	'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
511	'\n',
512	/* descriptor block 4: dummy data */
513	0x00, 0x00, 0x00, 0x10, 0x00,
514	0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
515	0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
516	0x20,
517	0x00, /* number of extensions */
518	0x00 /* checksum goes here */
519	};
520	int clock = (width + 6) * (height + 6) * 60 / 10000;
521	unsigned int i, sum = 0;
522
523	edid[12] = width & 0xff;
524	edid[13] = width >> 8;
525	edid[14] = height & 0xff;
526	edid[15] = height >> 8;
527	edid[54] = clock & 0xff;
528	edid[55] = clock >> 8;
529	edid[56] = width & 0xff;
530	edid[58] = (width >> 4) & 0xf0;
531	edid[59] = height & 0xff;
532	edid[61] = (height >> 4) & 0xf0;
533	for (i = 0; i < EDID_SIZE - 1; ++i)
534	sum += edid[i];
535	edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
536	drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
537	}
538
539	static int vbox_get_modes(struct drm_connector *connector)
540	{
541	struct vbox_connector *vbox_connector = NULL;
542	struct drm_display_mode *mode = NULL;
543	struct vbox_private *vbox = NULL;
544	unsigned int num_modes = 0;
545	int preferred_width, preferred_height;
546
547	vbox_connector = to_vbox_connector(connector);
548	vbox = connector->dev->dev_private;
549	/*
550	* Heuristic: we do not want to tell the host that we support dynamic
551	* resizing unless we feel confident that the user space client using
552	* the video driver can handle hot-plug events. So the first time modes
553	* are queried after a "master" switch we tell the host that we do not,
554	* and immediately after we send the client a hot-plug notification as
555	* a test to see if they will respond and query again.
556	* That is also the reason why capabilities are reported to the host at
557	* this place in the code rather than elsewhere.
558	* We need to report the flags location before reporting the IRQ
559	* capability.
560	*/
561	VBoxHGSMIReportFlagsLocation(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
562	HOST_FLAGS_OFFSET);
563	if (vbox_connector->vbox_crtc->crtc_id == 0)
564	vbox_report_caps(vbox);
565	if (!vbox->initial_mode_queried) {
566	if (vbox_connector->vbox_crtc->crtc_id == 0) {
567	vbox->initial_mode_queried = true;
568	vbox_report_hotplug(vbox);
569	}
570	return drm_add_modes_noedid(connector, 800, 600);
571	}
572	/* Also assume that a client which supports hot-plugging also knows
573	* how to update the screen in a way we can use, the only known
574	* relevent client which cannot is Plymouth in Ubuntu 14.04. */
575	vbox->need_refresh_timer = false;
576	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
577	preferred_width = vbox_connector->mode_hint.width ?
578	vbox_connector->mode_hint.width : 1024;
579	preferred_height = vbox_connector->mode_hint.height ?
580	vbox_connector->mode_hint.height : 768;
581	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
582	60, false, false, false);
583	if (mode) {
584	mode->type \|= DRM_MODE_TYPE_PREFERRED;
585	drm_mode_probed_add(connector, mode);
586	++num_modes;
587	}
588	vbox_set_edid(connector, preferred_width, preferred_height);
589
590	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) \|\| defined(RHEL_72)
591	if (vbox_connector->vbox_crtc->x_hint != -1)
592	drm_object_property_set_value(&connector->base,
593	vbox->dev->mode_config.suggested_x_property,
594	vbox_connector->vbox_crtc->x_hint);
595	else
596	drm_object_property_set_value(&connector->base,
597	vbox->dev->mode_config.suggested_x_property, 0);
598
599	if (vbox_connector->vbox_crtc->y_hint != -1)
600	drm_object_property_set_value(&connector->base,
601	vbox->dev->mode_config.suggested_y_property,
602	vbox_connector->vbox_crtc->y_hint);
603	else
604	drm_object_property_set_value(&connector->base,
605	vbox->dev->mode_config.suggested_y_property, 0);
606	#endif
607
608	return num_modes;
609	}
610
611	static int vbox_mode_valid(struct drm_connector *connector,
612	struct drm_display_mode *mode)
613	{
614	return MODE_OK;
615	}
616
617	static void vbox_connector_destroy(struct drm_connector *connector)
618	{
619	struct vbox_connector *vbox_connector = NULL;
620
621	vbox_connector = to_vbox_connector(connector);
622	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(RHEL_72)
623	drm_sysfs_connector_remove(connector);
624	#else
625	drm_connector_unregister(connector);
626	#endif
627	drm_connector_cleanup(connector);
628	kfree(connector);
629	}
630
631	static enum drm_connector_status
632	vbox_connector_detect(struct drm_connector *connector, bool force)
633	{
634	struct vbox_connector *vbox_connector = NULL;
635
636	(void)force;
637	vbox_connector = to_vbox_connector(connector);
638
639	return vbox_connector->mode_hint.disconnected ?
640	connector_status_disconnected : connector_status_connected;
641	}
642
643	static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
644	u32 max_y)
645	{
646	struct vbox_connector *vbox_connector;
647	struct drm_device *dev;
648	struct drm_display_mode mode, iterator;
649
650	vbox_connector = to_vbox_connector(connector);
651	dev = vbox_connector->base.dev;
652	list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
653	list_del(&mode->head);
654	drm_mode_destroy(dev, mode);
655	}
656
657	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
658	}
659
660	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
661	.mode_valid = vbox_mode_valid,
662	.get_modes = vbox_get_modes,
663	.best_encoder = vbox_best_single_encoder,
664	};
665
666	static const struct drm_connector_funcs vbox_connector_funcs = {
667	.dpms = drm_helper_connector_dpms,
668	.detect = vbox_connector_detect,
669	.fill_modes = vbox_fill_modes,
670	.destroy = vbox_connector_destroy,
671	};
672
673	static int vbox_connector_init(struct drm_device *dev,
674	struct vbox_crtc *vbox_crtc,
675	struct drm_encoder *encoder)
676	{
677	struct vbox_connector *vbox_connector;
678	struct drm_connector *connector;
679
680	vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
681	if (!vbox_connector)
682	return -ENOMEM;
683
684	connector = &vbox_connector->base;
685	vbox_connector->vbox_crtc = vbox_crtc;
686
687	drm_connector_init(dev, connector, &vbox_connector_funcs,
688	DRM_MODE_CONNECTOR_VGA);
689	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
690
691	connector->interlace_allowed = 0;
692	connector->doublescan_allowed = 0;
693
694	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) \|\| defined(RHEL_72)
695	drm_mode_create_suggested_offset_properties(dev);
696	drm_object_attach_property(&connector->base,
697	dev->mode_config.suggested_x_property, 0);
698	drm_object_attach_property(&connector->base,
699	dev->mode_config.suggested_y_property, 0);
700	#endif
701	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(RHEL_72)
702	drm_sysfs_connector_add(connector);
703	#else
704	drm_connector_register(connector);
705	#endif
706
707	drm_mode_connector_attach_encoder(connector, encoder);
708
709	return 0;
710	}
711
712	int vbox_mode_init(struct drm_device *dev)
713	{
714	struct vbox_private *vbox = dev->dev_private;
715	struct drm_encoder *encoder;
716	struct vbox_crtc *vbox_crtc;
717	unsigned int i;
718
719	/* vbox_cursor_init(dev); */
720	for (i = 0; i < vbox->num_crtcs; ++i) {
721	vbox_crtc = vbox_crtc_init(dev, i);
722	if (!vbox_crtc)
723	return -ENOMEM;
724	encoder = vbox_encoder_init(dev, i);
725	if (!encoder)
726	return -ENOMEM;
727	vbox_connector_init(dev, vbox_crtc, encoder);
728	}
729
730	return 0;
731	}
732
733	void vbox_mode_fini(struct drm_device *dev)
734	{
735	/* vbox_cursor_fini(dev); */
736	}
737
738	/**
739	* Copy the ARGB image and generate the mask, which is needed in case the host
740	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
741	* if the corresponding alpha value in the ARGB image is greater than 0xF0.
742	*/
743	static void copy_cursor_image(u8 src, u8 dst, u32 width, u32 height,
744	size_t mask_size)
745	{
746	size_t line_size = (width + 7) / 8;
747	u32 i, j;
748
749	memcpy(dst + mask_size, src, width * height * 4);
750	for (i = 0; i < height; ++i)
751	for (j = 0; j < width; ++j)
752	if (((u32 )src)[i width + j] > 0xf0000000)
753	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
754	}
755
756	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
757	u32 handle, u32 width, u32 height,
758	s32 hot_x, s32 hot_y)
759	{
760	struct vbox_private *vbox = crtc->dev->dev_private;
761	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
762	struct drm_gem_object *obj;
763	struct vbox_bo *bo;
764	int ret, rc;
765	struct ttm_bo_kmap_obj uobj_map;
766	u8 *src;
767	u8 *dst = NULL;
768	u32 caps = 0;
769	size_t data_size, mask_size;
770	bool src_isiomem;
771
772	if (!handle) {
773	bool cursor_enabled = false;
774	struct drm_crtc *crtci;
775
776	/* Hide cursor. */
777	vbox_crtc->cursor_enabled = false;
778	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
779	head)
780	if (to_vbox_crtc(crtci)->cursor_enabled)
781	cursor_enabled = true;
782
783	if (!cursor_enabled)
784	VBoxHGSMIUpdatePointerShape(vbox->guest_pool, 0, 0, 0,
785	0, 0, NULL, 0);
786	return 0;
787	}
788	vbox_crtc->cursor_enabled = true;
789	if (width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT \|\|
790	width == 0 \|\| height == 0)
791	return -EINVAL;
792	rc = VBoxQueryConfHGSMI(vbox->guest_pool,
793	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
794	ret = rc == VINF_SUCCESS ? 0 : rc == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
795	if (ret)
796	return ret;
797
798	if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE))
799	/*
800	* -EINVAL means cursor_set2() not supported, -EAGAIN means
801	* retry at once.
802	*/
803	return -EBUSY;
804
805	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0) \|\| defined(RHEL_74)
806	obj = drm_gem_object_lookup(file_priv, handle);
807	#else
808	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
809	#endif
810	if (obj) {
811	bo = gem_to_vbox_bo(obj);
812	ret = vbox_bo_reserve(bo, false);
813	if (!ret) {
814	/*
815	* The mask must be calculated based on the alpha
816	* channel, one bit per ARGB word, and must be 32-bit
817	* padded.
818	*/
819	mask_size = ((width + 7) / 8 * height + 3) & ~3;
820	data_size = width * height * 4 + mask_size;
821	vbox->cursor_hot_x = hot_x;
822	vbox->cursor_hot_y = hot_y;
823	vbox->cursor_width = width;
824	vbox->cursor_height = height;
825	vbox->cursor_data_size = data_size;
826	dst = vbox->cursor_data;
827	ret =
828	ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages,
829	&uobj_map);
830	if (!ret) {
831	src =
832	ttm_kmap_obj_virtual(&uobj_map,
833	&src_isiomem);
834	if (!src_isiomem) {
835	u32 flags =
836	VBOX_MOUSE_POINTER_VISIBLE \|
837	VBOX_MOUSE_POINTER_SHAPE \|
838	VBOX_MOUSE_POINTER_ALPHA;
839	copy_cursor_image(src, dst, width,
840	height, mask_size);
841	rc = VBoxHGSMIUpdatePointerShape(
842	vbox->guest_pool, flags,
843	vbox->cursor_hot_x,
844	vbox->cursor_hot_y,
845	width, height, dst, data_size);
846	ret =
847	rc == VINF_SUCCESS ? 0 : rc ==
848	VERR_NO_MEMORY ? -ENOMEM : rc ==
849	VERR_NOT_SUPPORTED ? -EBUSY :
850	-EINVAL;
851	} else {
852	DRM_ERROR("src cursor bo should be in main memory\n");
853	}
854	ttm_bo_kunmap(&uobj_map);
855	} else {
856	vbox->cursor_data_size = 0;
857	}
858	vbox_bo_unreserve(bo);
859	}
860	drm_gem_object_unreference_unlocked(obj);
861	} else {
862	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
863	ret = -ENOENT;
864	}
865
866	return ret;
867	}
868
869	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
870	{
871	struct vbox_private *vbox = crtc->dev->dev_private;
872	s32 crtc_x =
873	vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
874	s32 crtc_y =
875	vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
876	int rc;
877
878	x += vbox->cursor_hot_x;
879	y += vbox->cursor_hot_y;
880	if (x + crtc_x < 0 \|\| y + crtc_y < 0 \|\|
881	x + crtc_x >= vbox->input_mapping_width \|\|
882	y + crtc_y >= vbox->input_mapping_width \|\|
883	vbox->cursor_data_size == 0)
884	return 0;
885	rc = VBoxHGSMICursorPosition(vbox->guest_pool, true, x + crtc_x,
886	y + crtc_y, NULL, NULL);
887	return rc == VINF_SUCCESS ? 0 : rc == VERR_NO_MEMORY ? -ENOMEM : rc ==
888	VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL;
889	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 74642

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