vbox_mode.c@ 74451

Last change on this file since 74451 was 74401, checked in by vboxsync, 6 years ago
Additions/linux/vboxvideo: fix kernel module build with openSUSE 15.0. Fix the fix.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 26.2 KB

Line
1	/* $Id: vbox_mode.c 74401 2018-09-21 09:17:30Z 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) \|\| 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	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_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	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
256	obj = vbox_fb->obj;
257	bo = gem_to_vbox_bo(obj);
258
259	ret = vbox_bo_reserve(bo, false);
260	if (ret)
261	return ret;
262
263	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
264	vbox_bo_unreserve(bo);
265	if (ret)
266	return ret;
267
268	/* Unpin the previous fb. Do this after the new one has been pinned rather
269	* than before and re-pinning it on failure in case that fails too. */
270	if (old_fb) {
271	vbox_fb = to_vbox_framebuffer(old_fb);
272	obj = vbox_fb->obj;
273	bo = gem_to_vbox_bo(obj);
274	ret = vbox_bo_reserve(bo, false);
275	/* This should never fail, as no one else should be accessing it and we
276	* should be running under the modeset locks. */
277	if (!ret) {
278	vbox_bo_unpin(bo);
279	vbox_bo_unreserve(bo);
280	}
281	}
282
283	vbox_crtc->fb_offset = gpu_addr;
284	if (vbox_set_up_input_mapping(vbox)) {
285	struct drm_crtc *crtci;
286
287	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
288	head) {
289	vbox_set_view(crtc);
290	vbox_do_modeset(crtci, &crtci->mode);
291	}
292	}
293
294	return 0;
295	}
296
297	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
298	struct drm_display_mode *mode,
299	struct drm_display_mode *adjusted_mode,
300	int x, int y, struct drm_framebuffer *old_fb)
301	{
302	struct vbox_private *vbox = crtc->dev->dev_private;
303	int rc = vbox_crtc_set_base(crtc, old_fb, x, y);
304	if (rc)
305	return rc;
306	mutex_lock(&vbox->hw_mutex);
307	rc = vbox_set_view(crtc);
308	if (!rc)
309	vbox_do_modeset(crtc, mode);
310	VBoxHGSMIUpdateInputMapping(vbox->guest_pool, 0, 0,
311	vbox->input_mapping_width,
312	vbox->input_mapping_height);
313	mutex_unlock(&vbox->hw_mutex);
314
315	return rc;
316	}
317
318	static void vbox_crtc_disable(struct drm_crtc *crtc)
319	{
320	}
321
322	static void vbox_crtc_prepare(struct drm_crtc *crtc)
323	{
324	}
325
326	static void vbox_crtc_commit(struct drm_crtc *crtc)
327	{
328	}
329
330	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
331	.dpms = vbox_crtc_dpms,
332	.mode_fixup = vbox_crtc_mode_fixup,
333	.mode_set = vbox_crtc_mode_set,
334	.disable = vbox_crtc_disable,
335	.prepare = vbox_crtc_prepare,
336	.commit = vbox_crtc_commit,
337	};
338
339	static void vbox_crtc_reset(struct drm_crtc *crtc)
340	{
341	}
342
343	static void vbox_crtc_destroy(struct drm_crtc *crtc)
344	{
345	drm_crtc_cleanup(crtc);
346	kfree(crtc);
347	}
348
349	static const struct drm_crtc_funcs vbox_crtc_funcs = {
350	.cursor_move = vbox_cursor_move,
351	.cursor_set2 = vbox_cursor_set2,
352	.reset = vbox_crtc_reset,
353	.set_config = drm_crtc_helper_set_config,
354	/* .gamma_set = vbox_crtc_gamma_set, */
355	.destroy = vbox_crtc_destroy,
356	};
357
358	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned int i)
359	{
360	struct vbox_crtc *vbox_crtc;
361
362	vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
363	if (!vbox_crtc)
364	return NULL;
365
366	vbox_crtc->crtc_id = i;
367
368	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
369	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
370	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
371
372	return vbox_crtc;
373	}
374
375	static void vbox_encoder_destroy(struct drm_encoder *encoder)
376	{
377	drm_encoder_cleanup(encoder);
378	kfree(encoder);
379	}
380
381	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0) && !defined(RHEL_73)
382	static struct drm_encoder drm_encoder_find(struct drm_device dev, u32 id)
383	{
384	struct drm_mode_object *mo;
385
386	mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
387	return mo ? obj_to_encoder(mo) : NULL;
388	}
389	#endif
390
391	static struct drm_encoder *vbox_best_single_encoder(struct drm_connector
392	*connector)
393	{
394	int enc_id = connector->encoder_ids[0];
395
396	/* pick the encoder ids */
397	if (enc_id)
398	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0) \|\| \
399	(defined(CONFIG_SUSE_VERSION) && CONFIG_SUSE_VERSION == 15)
400	return drm_encoder_find(connector->dev, NULL, enc_id);
401	#else
402	return drm_encoder_find(connector->dev, enc_id);
403	#endif
404
405	return NULL;
406	}
407
408	static const struct drm_encoder_funcs vbox_enc_funcs = {
409	.destroy = vbox_encoder_destroy,
410	};
411
412	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
413	{
414	}
415
416	static bool vbox_mode_fixup(struct drm_encoder *encoder,
417	const struct drm_display_mode *mode,
418	struct drm_display_mode *adjusted_mode)
419	{
420	return true;
421	}
422
423	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
424	struct drm_display_mode *mode,
425	struct drm_display_mode *adjusted_mode)
426	{
427	}
428
429	static void vbox_encoder_prepare(struct drm_encoder *encoder)
430	{
431	}
432
433	static void vbox_encoder_commit(struct drm_encoder *encoder)
434	{
435	}
436
437	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
438	.dpms = vbox_encoder_dpms,
439	.mode_fixup = vbox_mode_fixup,
440	.prepare = vbox_encoder_prepare,
441	.commit = vbox_encoder_commit,
442	.mode_set = vbox_encoder_mode_set,
443	};
444
445	static struct drm_encoder vbox_encoder_init(struct drm_device dev,
446	unsigned int i)
447	{
448	struct vbox_encoder *vbox_encoder;
449
450	vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
451	if (!vbox_encoder)
452	return NULL;
453
454	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
455	DRM_MODE_ENCODER_DAC
456	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0) \|\| defined(RHEL_73)
457	, NULL
458	#endif
459	);
460	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
461
462	vbox_encoder->base.possible_crtcs = 1 << i;
463	return &vbox_encoder->base;
464	}
465
466	/**
467	* Generate EDID data with a mode-unique serial number for the virtual
468	* monitor to try to persuade Unity that different modes correspond to
469	* different monitors and it should not try to force the same resolution on
470	* them.
471	*/
472	static void vbox_set_edid(struct drm_connector *connector, int width,
473	int height)
474	{
475	enum { EDID_SIZE = 128 };
476	unsigned char edid[EDID_SIZE] = {
477	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
478	0x58, 0x58, /* manufacturer (VBX) */
479	0x00, 0x00, /* product code */
480	0x00, 0x00, 0x00, 0x00, /* serial number goes here */
481	0x01, /* week of manufacture */
482	0x00, /* year of manufacture */
483	0x01, 0x03, /* EDID version */
484	0x80, /* capabilities - digital */
485	0x00, /* horiz. res in cm, zero for projectors */
486	0x00, /* vert. res in cm */
487	0x78, /* display gamma (120 == 2.2). */
488	0xEE, /* features (standby, suspend, off, RGB, std */
489	/* colour space, preferred timing mode) */
490	0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
491	/* chromaticity for standard colour space. */
492	0x00, 0x00, 0x00, /* no default timings */
493	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
494	0x01, 0x01,
495	0x01, 0x01, 0x01, 0x01, /* no standard timings */
496	0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
497	0x02, 0x02,
498	/* descriptor block 1 goes below */
499	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
500	/* descriptor block 2, monitor ranges */
501	0x00, 0x00, 0x00, 0xFD, 0x00,
502	0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
503	0x20, 0x20,
504	/* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
505	0x20,
506	/* descriptor block 3, monitor name */
507	0x00, 0x00, 0x00, 0xFC, 0x00,
508	'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
509	'\n',
510	/* descriptor block 4: dummy data */
511	0x00, 0x00, 0x00, 0x10, 0x00,
512	0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
513	0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
514	0x20,
515	0x00, /* number of extensions */
516	0x00 /* checksum goes here */
517	};
518	int clock = (width + 6) * (height + 6) * 60 / 10000;
519	unsigned int i, sum = 0;
520
521	edid[12] = width & 0xff;
522	edid[13] = width >> 8;
523	edid[14] = height & 0xff;
524	edid[15] = height >> 8;
525	edid[54] = clock & 0xff;
526	edid[55] = clock >> 8;
527	edid[56] = width & 0xff;
528	edid[58] = (width >> 4) & 0xf0;
529	edid[59] = height & 0xff;
530	edid[61] = (height >> 4) & 0xf0;
531	for (i = 0; i < EDID_SIZE - 1; ++i)
532	sum += edid[i];
533	edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
534	drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
535	}
536
537	static int vbox_get_modes(struct drm_connector *connector)
538	{
539	struct vbox_connector *vbox_connector = NULL;
540	struct drm_display_mode *mode = NULL;
541	struct vbox_private *vbox = NULL;
542	unsigned int num_modes = 0;
543	int preferred_width, preferred_height;
544
545	vbox_connector = to_vbox_connector(connector);
546	vbox = connector->dev->dev_private;
547	/*
548	* Heuristic: we do not want to tell the host that we support dynamic
549	* resizing unless we feel confident that the user space client using
550	* the video driver can handle hot-plug events. So the first time modes
551	* are queried after a "master" switch we tell the host that we do not,
552	* and immediately after we send the client a hot-plug notification as
553	* a test to see if they will respond and query again.
554	* That is also the reason why capabilities are reported to the host at
555	* this place in the code rather than elsewhere.
556	* We need to report the flags location before reporting the IRQ
557	* capability.
558	*/
559	VBoxHGSMIReportFlagsLocation(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
560	HOST_FLAGS_OFFSET);
561	if (vbox_connector->vbox_crtc->crtc_id == 0)
562	vbox_report_caps(vbox);
563	if (!vbox->initial_mode_queried) {
564	if (vbox_connector->vbox_crtc->crtc_id == 0) {
565	vbox->initial_mode_queried = true;
566	vbox_report_hotplug(vbox);
567	}
568	return drm_add_modes_noedid(connector, 800, 600);
569	}
570	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
571	preferred_width = vbox_connector->mode_hint.width ?
572	vbox_connector->mode_hint.width : 1024;
573	preferred_height = vbox_connector->mode_hint.height ?
574	vbox_connector->mode_hint.height : 768;
575	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
576	60, false, false, false);
577	if (mode) {
578	mode->type \|= DRM_MODE_TYPE_PREFERRED;
579	drm_mode_probed_add(connector, mode);
580	++num_modes;
581	}
582	vbox_set_edid(connector, preferred_width, preferred_height);
583
584	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) \|\| defined(RHEL_73)
585	if (vbox_connector->vbox_crtc->x_hint != -1)
586	drm_object_property_set_value(&connector->base,
587	vbox->dev->mode_config.suggested_x_property,
588	vbox_connector->vbox_crtc->x_hint);
589	else
590	drm_object_property_set_value(&connector->base,
591	vbox->dev->mode_config.suggested_x_property, 0);
592
593	if (vbox_connector->vbox_crtc->y_hint != -1)
594	drm_object_property_set_value(&connector->base,
595	vbox->dev->mode_config.suggested_y_property,
596	vbox_connector->vbox_crtc->y_hint);
597	else
598	drm_object_property_set_value(&connector->base,
599	vbox->dev->mode_config.suggested_y_property, 0);
600	#endif
601
602	return num_modes;
603	}
604
605	static int vbox_mode_valid(struct drm_connector *connector,
606	struct drm_display_mode *mode)
607	{
608	return MODE_OK;
609	}
610
611	static void vbox_connector_destroy(struct drm_connector *connector)
612	{
613	struct vbox_connector *vbox_connector = NULL;
614
615	vbox_connector = to_vbox_connector(connector);
616	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(RHEL_73)
617	drm_sysfs_connector_remove(connector);
618	#else
619	drm_connector_unregister(connector);
620	#endif
621	drm_connector_cleanup(connector);
622	kfree(connector);
623	}
624
625	static enum drm_connector_status
626	vbox_connector_detect(struct drm_connector *connector, bool force)
627	{
628	struct vbox_connector *vbox_connector = NULL;
629
630	(void)force;
631	vbox_connector = to_vbox_connector(connector);
632
633	return vbox_connector->mode_hint.disconnected ?
634	connector_status_disconnected : connector_status_connected;
635	}
636
637	static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
638	u32 max_y)
639	{
640	struct vbox_connector *vbox_connector;
641	struct drm_device *dev;
642	struct drm_display_mode mode, iterator;
643
644	vbox_connector = to_vbox_connector(connector);
645	dev = vbox_connector->base.dev;
646	list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
647	list_del(&mode->head);
648	drm_mode_destroy(dev, mode);
649	}
650
651	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
652	}
653
654	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
655	.mode_valid = vbox_mode_valid,
656	.get_modes = vbox_get_modes,
657	.best_encoder = vbox_best_single_encoder,
658	};
659
660	static const struct drm_connector_funcs vbox_connector_funcs = {
661	.dpms = drm_helper_connector_dpms,
662	.detect = vbox_connector_detect,
663	.fill_modes = vbox_fill_modes,
664	.destroy = vbox_connector_destroy,
665	};
666
667	static int vbox_connector_init(struct drm_device *dev,
668	struct vbox_crtc *vbox_crtc,
669	struct drm_encoder *encoder)
670	{
671	struct vbox_connector *vbox_connector;
672	struct drm_connector *connector;
673
674	vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
675	if (!vbox_connector)
676	return -ENOMEM;
677
678	connector = &vbox_connector->base;
679	vbox_connector->vbox_crtc = vbox_crtc;
680
681	drm_connector_init(dev, connector, &vbox_connector_funcs,
682	DRM_MODE_CONNECTOR_VGA);
683	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
684
685	connector->interlace_allowed = 0;
686	connector->doublescan_allowed = 0;
687
688	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) \|\| defined(RHEL_73)
689	drm_mode_create_suggested_offset_properties(dev);
690	drm_object_attach_property(&connector->base,
691	dev->mode_config.suggested_x_property, 0);
692	drm_object_attach_property(&connector->base,
693	dev->mode_config.suggested_y_property, 0);
694	#endif
695	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(RHEL_73)
696	drm_sysfs_connector_add(connector);
697	#else
698	drm_connector_register(connector);
699	#endif
700
701	drm_mode_connector_attach_encoder(connector, encoder);
702
703	return 0;
704	}
705
706	int vbox_mode_init(struct drm_device *dev)
707	{
708	struct vbox_private *vbox = dev->dev_private;
709	struct drm_encoder *encoder;
710	struct vbox_crtc *vbox_crtc;
711	unsigned int i;
712
713	/* vbox_cursor_init(dev); */
714	for (i = 0; i < vbox->num_crtcs; ++i) {
715	vbox_crtc = vbox_crtc_init(dev, i);
716	if (!vbox_crtc)
717	return -ENOMEM;
718	encoder = vbox_encoder_init(dev, i);
719	if (!encoder)
720	return -ENOMEM;
721	vbox_connector_init(dev, vbox_crtc, encoder);
722	}
723
724	return 0;
725	}
726
727	void vbox_mode_fini(struct drm_device *dev)
728	{
729	/* vbox_cursor_fini(dev); */
730	}
731
732	/**
733	* Copy the ARGB image and generate the mask, which is needed in case the host
734	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
735	* if the corresponding alpha value in the ARGB image is greater than 0xF0.
736	*/
737	static void copy_cursor_image(u8 src, u8 dst, u32 width, u32 height,
738	size_t mask_size)
739	{
740	size_t line_size = (width + 7) / 8;
741	u32 i, j;
742
743	memcpy(dst + mask_size, src, width * height * 4);
744	for (i = 0; i < height; ++i)
745	for (j = 0; j < width; ++j)
746	if (((u32 )src)[i width + j] > 0xf0000000)
747	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
748	}
749
750	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
751	u32 handle, u32 width, u32 height,
752	s32 hot_x, s32 hot_y)
753	{
754	struct vbox_private *vbox = crtc->dev->dev_private;
755	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
756	struct drm_gem_object *obj;
757	struct vbox_bo *bo;
758	int ret, rc;
759	struct ttm_bo_kmap_obj uobj_map;
760	u8 *src;
761	u8 *dst = NULL;
762	u32 caps = 0;
763	size_t data_size, mask_size;
764	bool src_isiomem;
765
766	if (!handle) {
767	bool cursor_enabled = false;
768	struct drm_crtc *crtci;
769
770	/* Hide cursor. */
771	vbox_crtc->cursor_enabled = false;
772	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
773	head)
774	if (to_vbox_crtc(crtci)->cursor_enabled)
775	cursor_enabled = true;
776
777	if (!cursor_enabled)
778	VBoxHGSMIUpdatePointerShape(vbox->guest_pool, 0, 0, 0,
779	0, 0, NULL, 0);
780	return 0;
781	}
782	vbox_crtc->cursor_enabled = true;
783	if (width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT \|\|
784	width == 0 \|\| height == 0)
785	return -EINVAL;
786	rc = VBoxQueryConfHGSMI(vbox->guest_pool,
787	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
788	ret = rc == VINF_SUCCESS ? 0 : rc == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
789	if (ret)
790	return ret;
791
792	if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE))
793	/*
794	* -EINVAL means cursor_set2() not supported, -EAGAIN means
795	* retry at once.
796	*/
797	return -EBUSY;
798
799	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0) \|\| defined(RHEL_74)
800	obj = drm_gem_object_lookup(file_priv, handle);
801	#else
802	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
803	#endif
804	if (obj) {
805	bo = gem_to_vbox_bo(obj);
806	ret = vbox_bo_reserve(bo, false);
807	if (!ret) {
808	/*
809	* The mask must be calculated based on the alpha
810	* channel, one bit per ARGB word, and must be 32-bit
811	* padded.
812	*/
813	mask_size = ((width + 7) / 8 * height + 3) & ~3;
814	data_size = width * height * 4 + mask_size;
815	vbox->cursor_hot_x = hot_x;
816	vbox->cursor_hot_y = hot_y;
817	vbox->cursor_width = width;
818	vbox->cursor_height = height;
819	vbox->cursor_data_size = data_size;
820	dst = vbox->cursor_data;
821	ret =
822	ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages,
823	&uobj_map);
824	if (!ret) {
825	src =
826	ttm_kmap_obj_virtual(&uobj_map,
827	&src_isiomem);
828	if (!src_isiomem) {
829	u32 flags =
830	VBOX_MOUSE_POINTER_VISIBLE \|
831	VBOX_MOUSE_POINTER_SHAPE \|
832	VBOX_MOUSE_POINTER_ALPHA;
833	copy_cursor_image(src, dst, width,
834	height, mask_size);
835	rc = VBoxHGSMIUpdatePointerShape(
836	vbox->guest_pool, flags,
837	vbox->cursor_hot_x,
838	vbox->cursor_hot_y,
839	width, height, dst, data_size);
840	ret =
841	rc == VINF_SUCCESS ? 0 : rc ==
842	VERR_NO_MEMORY ? -ENOMEM : rc ==
843	VERR_NOT_SUPPORTED ? -EBUSY :
844	-EINVAL;
845	} else {
846	DRM_ERROR("src cursor bo should be in main memory\n");
847	}
848	ttm_bo_kunmap(&uobj_map);
849	} else {
850	vbox->cursor_data_size = 0;
851	}
852	vbox_bo_unreserve(bo);
853	}
854	drm_gem_object_unreference_unlocked(obj);
855	} else {
856	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
857	ret = -ENOENT;
858	}
859
860	return ret;
861	}
862
863	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
864	{
865	struct vbox_private *vbox = crtc->dev->dev_private;
866	s32 crtc_x =
867	vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
868	s32 crtc_y =
869	vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
870	int rc;
871
872	x += vbox->cursor_hot_x;
873	y += vbox->cursor_hot_y;
874	if (x + crtc_x < 0 \|\| y + crtc_y < 0 \|\|
875	x + crtc_x >= vbox->input_mapping_width \|\|
876	y + crtc_y >= vbox->input_mapping_width \|\|
877	vbox->cursor_data_size == 0)
878	return 0;
879	rc = VBoxHGSMICursorPosition(vbox->guest_pool, true, x + crtc_x,
880	y + crtc_y, NULL, NULL);
881	return rc == VINF_SUCCESS ? 0 : rc == VERR_NO_MEMORY ? -ENOMEM : rc ==
882	VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL;
883	}

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 74451

Download in other formats: