vbox_mode.c@ 100765

Last change on this file since 100765 was 100677, checked in by vboxsync, 17 months ago
Additions: Linux: vboxvideo: Add initial support for OpenSUSE 15.5 kernel, bugref:10491.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 27.8 KB

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1	/* $Id: vbox_mode.c 100677 2023-07-21 13:27:08Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013-2023 Oracle and/or its affiliates.
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 RTLNX_VER_MIN(6,3,0) \|\| RTLNX_RHEL_MAJ_PREREQ(9,3)
43	# include <drm/drm_modeset_helper_vtables.h>
44	# include <drm/drm_modeset_helper.h>
45	#endif
46	#if RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
47	# include <drm/drm_plane_helper.h>
48	#endif
49	#if RTLNX_VER_MIN(5,1,0) \|\| RTLNX_RHEL_MAJ_PREREQ(8,1)
50	# include <drm/drm_probe_helper.h>
51	#endif
52
53	#if RTLNX_VER_MIN(6,0,0) \|\| RTLNX_RHEL_RANGE(8,8, 8,99) \|\| RTLNX_RHEL_MAJ_PREREQ(9,2) \|\| RTLNX_SUSE_MAJ_PREREQ(15,5)
54	# include <drm/drm_edid.h>
55	#endif
56
57	#include "VBoxVideo.h"
58
59	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
60	u32 handle, u32 width, u32 height,
61	s32 hot_x, s32 hot_y);
62	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
63
64	/**
65	* Set a graphics mode. Poke any required values into registers, do an HGSMI
66	* mode set and tell the host we support advanced graphics functions.
67	*/
68	static void vbox_do_modeset(struct drm_crtc *crtc,
69	const struct drm_display_mode *mode)
70	{
71	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
72	struct vbox_private *vbox;
73	int width, height, bpp, pitch;
74	u16 flags;
75	s32 x_offset, y_offset;
76
77	vbox = crtc->dev->dev_private;
78	width = mode->hdisplay ? mode->hdisplay : 640;
79	height = mode->vdisplay ? mode->vdisplay : 480;
80	#if RTLNX_VER_MIN(4,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
81	bpp = crtc->enabled ? CRTC_FB(crtc)->format->cpp[0] * 8 : 32;
82	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
83	#elif RTLNX_VER_MIN(3,3,0)
84	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
85	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
86	#else
87	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
88	pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * bpp / 8;
89	#endif
90	x_offset = vbox->single_framebuffer ? crtc->x : vbox_crtc->x_hint;
91	y_offset = vbox->single_framebuffer ? crtc->y : vbox_crtc->y_hint;
92
93	/*
94	* This is the old way of setting graphics modes. It assumed one screen
95	* and a frame-buffer at the start of video RAM. On older versions of
96	* VirtualBox, certain parts of the code still assume that the first
97	* screen is programmed this way, so try to fake it.
98	*/
99	if (vbox_crtc->crtc_id == 0 && crtc->enabled &&
100	vbox_crtc->fb_offset / pitch < 0xffff - crtc->y &&
101	vbox_crtc->fb_offset % (bpp / 8) == 0)
102	VBoxVideoSetModeRegisters(
103	width, height, pitch * 8 / bpp,
104	#if RTLNX_VER_MIN(4,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
105	CRTC_FB(crtc)->format->cpp[0] * 8,
106	#else
107	CRTC_FB(crtc)->bits_per_pixel,
108	#endif
109	0,
110	vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x,
111	vbox_crtc->fb_offset / pitch + crtc->y);
112
113	flags = VBVA_SCREEN_F_ACTIVE;
114	flags \|= (crtc->enabled && !vbox_crtc->blanked) ?
115	0 : VBVA_SCREEN_F_BLANK;
116	flags \|= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0;
117	VBoxHGSMIProcessDisplayInfo(vbox->guest_pool, vbox_crtc->crtc_id,
118	x_offset, y_offset, vbox_crtc->fb_offset +
119	crtc->x * bpp / 8 + crtc->y * pitch,
120	pitch, width, height,
121	vbox_crtc->blanked ? 0 : bpp, flags);
122	}
123
124	static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
125	{
126	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
127	struct vbox_private *vbox = crtc->dev->dev_private;
128
129	switch (mode) {
130	case DRM_MODE_DPMS_ON:
131	vbox_crtc->blanked = false;
132	/* Restart the refresh timer if necessary. */
133	schedule_delayed_work(&vbox->refresh_work, VBOX_REFRESH_PERIOD);
134	break;
135	case DRM_MODE_DPMS_STANDBY:
136	case DRM_MODE_DPMS_SUSPEND:
137	case DRM_MODE_DPMS_OFF:
138	vbox_crtc->blanked = true;
139	break;
140	}
141
142	mutex_lock(&vbox->hw_mutex);
143	vbox_do_modeset(crtc, &crtc->hwmode);
144	mutex_unlock(&vbox->hw_mutex);
145	}
146
147	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
148	const struct drm_display_mode *mode,
149	struct drm_display_mode *adjusted_mode)
150	{
151	return true;
152	}
153
154	/*
155	* Try to map the layout of virtual screens to the range of the input device.
156	* Return true if we need to re-set the crtc modes due to screen offset
157	* changes.
158	*/
159	static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
160	{
161	struct drm_crtc *crtci;
162	struct drm_connector *connectori;
163	struct drm_framebuffer *fb1 = NULL;
164	bool single_framebuffer = true;
165	bool old_single_framebuffer = vbox->single_framebuffer;
166	u16 width = 0, height = 0;
167
168	/*
169	* Are we using an X.Org-style single large frame-buffer for all crtcs?
170	* If so then screen layout can be deduced from the crtc offsets.
171	* Same fall-back if this is the fbdev frame-buffer.
172	*/
173	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
174	if (!fb1) {
175	fb1 = CRTC_FB(crtci);
176	if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
177	break;
178	} else if (CRTC_FB(crtci) && fb1 != CRTC_FB(crtci)) {
179	single_framebuffer = false;
180	}
181	}
182	if (single_framebuffer) {
183	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
184	head) {
185	if (to_vbox_crtc(crtci)->crtc_id != 0)
186	continue;
187
188	if (!CRTC_FB(crtci))
189	break;
190	vbox->single_framebuffer = true;
191	vbox->input_mapping_width = CRTC_FB(crtci)->width;
192	vbox->input_mapping_height = CRTC_FB(crtci)->height;
193	return old_single_framebuffer !=
194	vbox->single_framebuffer;
195	}
196	}
197	/* Otherwise calculate the total span of all screens. */
198	list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list,
199	head) {
200	struct vbox_connector *vbox_connector =
201	to_vbox_connector(connectori);
202	struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
203
204	width = max_t(u16, width, vbox_crtc->x_hint +
205	vbox_connector->mode_hint.width);
206	height = max_t(u16, height, vbox_crtc->y_hint +
207	vbox_connector->mode_hint.height);
208	}
209
210	vbox->single_framebuffer = false;
211	vbox->input_mapping_width = width;
212	vbox->input_mapping_height = height;
213
214	return old_single_framebuffer != vbox->single_framebuffer;
215	}
216
217	static int vbox_crtc_set_base(struct drm_crtc *crtc,
218	struct drm_framebuffer *old_fb,
219	struct drm_framebuffer *new_fb,
220	int x, int y)
221	{
222	struct vbox_private *vbox = crtc->dev->dev_private;
223	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
224	struct drm_gem_object *obj;
225	struct vbox_framebuffer *vbox_fb;
226	struct vbox_bo *bo;
227	int ret;
228	u64 gpu_addr;
229
230	vbox_fb = to_vbox_framebuffer(new_fb);
231	obj = vbox_fb->obj;
232	bo = gem_to_vbox_bo(obj);
233
234	ret = vbox_bo_reserve(bo, false);
235	if (ret)
236	return ret;
237
238	ret = vbox_bo_pin(bo, VBOX_MEM_TYPE_VRAM, &gpu_addr);
239	vbox_bo_unreserve(bo);
240	if (ret)
241	return ret;
242
243	/* Unpin the previous fb. Do this after the new one has been pinned rather
244	* than before and re-pinning it on failure in case that fails too. */
245	if (old_fb) {
246	vbox_fb = to_vbox_framebuffer(old_fb);
247	obj = vbox_fb->obj;
248	bo = gem_to_vbox_bo(obj);
249	ret = vbox_bo_reserve(bo, false);
250	/* This should never fail, as no one else should be accessing it and we
251	* should be running under the modeset locks. */
252	if (!ret) {
253	vbox_bo_unpin(bo);
254	vbox_bo_unreserve(bo);
255	}
256	else
257	{
258	DRM_ERROR("unable to lock buffer object: error %d\n", ret);
259	}
260	}
261
262	if (&vbox->fbdev->afb == vbox_fb)
263	vbox_fbdev_set_base(vbox, gpu_addr);
264
265	vbox_crtc->fb_offset = gpu_addr;
266	if (vbox_set_up_input_mapping(vbox)) {
267	struct drm_crtc *crtci;
268
269	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
270	head) {
271	vbox_do_modeset(crtci, &crtci->mode);
272	}
273	}
274
275	return 0;
276	}
277
278	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
279	struct drm_display_mode *mode,
280	struct drm_display_mode *adjusted_mode,
281	int x, int y, struct drm_framebuffer *old_fb)
282	{
283	struct vbox_private *vbox = crtc->dev->dev_private;
284	int ret = vbox_crtc_set_base(crtc, old_fb, CRTC_FB(crtc), x, y);
285	if (ret)
286	return ret;
287	mutex_lock(&vbox->hw_mutex);
288	vbox_do_modeset(crtc, mode);
289	VBoxHGSMIUpdateInputMapping(vbox->guest_pool, 0, 0,
290	vbox->input_mapping_width,
291	vbox->input_mapping_height);
292	mutex_unlock(&vbox->hw_mutex);
293
294	return ret;
295	}
296
297	static int vbox_crtc_page_flip(struct drm_crtc *crtc,
298	struct drm_framebuffer *fb,
299	#if RTLNX_VER_MIN(4,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
300	struct drm_pending_vblank_event *event,
301	uint32_t page_flip_flags,
302	struct drm_modeset_acquire_ctx *ctx)
303	#elif RTLNX_VER_MIN(3,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,0)
304	struct drm_pending_vblank_event *event,
305	uint32_t page_flip_flags)
306	#else
307	struct drm_pending_vblank_event *event)
308	#endif
309	{
310	struct vbox_private *vbox = crtc->dev->dev_private;
311	struct drm_device *drm = vbox->dev;
312	unsigned long flags;
313	int rc;
314
315	rc = vbox_crtc_set_base(crtc, CRTC_FB(crtc), fb, 0, 0);
316	if (rc)
317	return rc;
318
319	mutex_lock(&vbox->hw_mutex);
320	vbox_do_modeset(crtc, &crtc->mode);
321	mutex_unlock(&vbox->hw_mutex);
322
323	spin_lock_irqsave(&drm->event_lock, flags);
324
325	if (event)
326	#if RTLNX_VER_MIN(3,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
327	drm_crtc_send_vblank_event(crtc, event);
328	#else
329	drm_send_vblank_event(drm, -1, event);
330	#endif
331
332	spin_unlock_irqrestore(&drm->event_lock, flags);
333
334	return 0;
335	}
336
337	static void vbox_crtc_disable(struct drm_crtc *crtc)
338	{
339	}
340
341	static void vbox_crtc_prepare(struct drm_crtc *crtc)
342	{
343	}
344
345	static void vbox_crtc_commit(struct drm_crtc *crtc)
346	{
347	}
348
349	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
350	.dpms = vbox_crtc_dpms,
351	.mode_fixup = vbox_crtc_mode_fixup,
352	.mode_set = vbox_crtc_mode_set,
353	.disable = vbox_crtc_disable,
354	.prepare = vbox_crtc_prepare,
355	.commit = vbox_crtc_commit,
356	};
357
358	static void vbox_crtc_reset(struct drm_crtc *crtc)
359	{
360	}
361
362	static void vbox_crtc_destroy(struct drm_crtc *crtc)
363	{
364	drm_crtc_cleanup(crtc);
365	kfree(crtc);
366	}
367
368	static const struct drm_crtc_funcs vbox_crtc_funcs = {
369	.cursor_move = vbox_cursor_move,
370	.cursor_set2 = vbox_cursor_set2,
371	.reset = vbox_crtc_reset,
372	.set_config = drm_crtc_helper_set_config,
373	/* .gamma_set = vbox_crtc_gamma_set, */
374	.page_flip = vbox_crtc_page_flip,
375	.destroy = vbox_crtc_destroy,
376	};
377
378	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned int i)
379	{
380	struct vbox_crtc *vbox_crtc;
381
382	vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
383	if (!vbox_crtc)
384	return NULL;
385
386	vbox_crtc->crtc_id = i;
387
388	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
389	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
390	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
391
392	return vbox_crtc;
393	}
394
395	static void vbox_encoder_destroy(struct drm_encoder *encoder)
396	{
397	drm_encoder_cleanup(encoder);
398	kfree(encoder);
399	}
400
401	#if RTLNX_VER_MAX(3,13,0) && !RTLNX_RHEL_MAJ_PREREQ(7,1)
402	static struct drm_encoder drm_encoder_find(struct drm_device dev, u32 id)
403	{
404	struct drm_mode_object *mo;
405
406	mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
407	return mo ? obj_to_encoder(mo) : NULL;
408	}
409	#endif
410
411	static struct drm_encoder *vbox_best_single_encoder(struct drm_connector
412	*connector)
413	{
414	#if RTLNX_VER_MIN(5,5,0) \|\| RTLNX_RHEL_MIN(8,3) \|\| RTLNX_SUSE_MAJ_PREREQ(15,3)
415	struct drm_encoder *encoder;
416
417	/* There is only one encoder per connector */
418	drm_connector_for_each_possible_encoder(connector, encoder)
419	return encoder;
420	#else /* < 5.5 \|\| RHEL < 8.3 */
421	int enc_id = connector->encoder_ids[0];
422
423	/* pick the encoder ids */
424	if (enc_id)
425	# if RTLNX_VER_MIN(4,15,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,6) \|\| (defined(CONFIG_SUSE_VERSION) && RTLNX_VER_MIN(4,12,0))
426	return drm_encoder_find(connector->dev, NULL, enc_id);
427	# else
428	return drm_encoder_find(connector->dev, enc_id);
429	# endif
430	#endif /* < 5.5 \|\| RHEL < 8.3 */
431	return NULL;
432	}
433
434	static const struct drm_encoder_funcs vbox_enc_funcs = {
435	.destroy = vbox_encoder_destroy,
436	};
437
438	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
439	{
440	}
441
442	static bool vbox_mode_fixup(struct drm_encoder *encoder,
443	const struct drm_display_mode *mode,
444	struct drm_display_mode *adjusted_mode)
445	{
446	return true;
447	}
448
449	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
450	struct drm_display_mode *mode,
451	struct drm_display_mode *adjusted_mode)
452	{
453	}
454
455	static void vbox_encoder_prepare(struct drm_encoder *encoder)
456	{
457	}
458
459	static void vbox_encoder_commit(struct drm_encoder *encoder)
460	{
461	}
462
463	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
464	.dpms = vbox_encoder_dpms,
465	.mode_fixup = vbox_mode_fixup,
466	.prepare = vbox_encoder_prepare,
467	.commit = vbox_encoder_commit,
468	.mode_set = vbox_encoder_mode_set,
469	};
470
471	static struct drm_encoder vbox_encoder_init(struct drm_device dev,
472	unsigned int i)
473	{
474	struct vbox_encoder *vbox_encoder;
475
476	vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
477	if (!vbox_encoder)
478	return NULL;
479
480	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
481	#if RTLNX_VER_MIN(4,5,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,3)
482	DRM_MODE_ENCODER_DAC, NULL);
483	#else
484	DRM_MODE_ENCODER_DAC);
485	#endif
486	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
487
488	vbox_encoder->base.possible_crtcs = 1 << i;
489	return &vbox_encoder->base;
490	}
491
492	/**
493	* Generate EDID data with a mode-unique serial number for the virtual
494	* monitor to try to persuade Unity that different modes correspond to
495	* different monitors and it should not try to force the same resolution on
496	* them.
497	*/
498	static void vbox_set_edid(struct drm_connector *connector, int width,
499	int height)
500	{
501	enum { EDID_SIZE = 128 };
502	unsigned char edid[EDID_SIZE] = {
503	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
504	0x58, 0x58, /* manufacturer (VBX) */
505	0x00, 0x00, /* product code */
506	0x00, 0x00, 0x00, 0x00, /* serial number goes here */
507	0x01, /* week of manufacture */
508	0x00, /* year of manufacture */
509	0x01, 0x03, /* EDID version */
510	0x80, /* capabilities - digital */
511	0x00, /* horiz. res in cm, zero for projectors */
512	0x00, /* vert. res in cm */
513	0x78, /* display gamma (120 == 2.2). */
514	0xEE, /* features (standby, suspend, off, RGB, std */
515	/* colour space, preferred timing mode) */
516	0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
517	/* chromaticity for standard colour space. */
518	0x00, 0x00, 0x00, /* no default timings */
519	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
520	0x01, 0x01,
521	0x01, 0x01, 0x01, 0x01, /* no standard timings */
522	0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
523	0x02, 0x02,
524	/* descriptor block 1 goes below */
525	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
526	/* descriptor block 2, monitor ranges */
527	0x00, 0x00, 0x00, 0xFD, 0x00,
528	0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
529	0x20, 0x20,
530	/* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
531	0x20,
532	/* descriptor block 3, monitor name */
533	0x00, 0x00, 0x00, 0xFC, 0x00,
534	'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
535	'\n',
536	/* descriptor block 4: dummy data */
537	0x00, 0x00, 0x00, 0x10, 0x00,
538	0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
539	0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
540	0x20,
541	0x00, /* number of extensions */
542	0x00 /* checksum goes here */
543	};
544	int clock = (width + 6) * (height + 6) * 60 / 10000;
545	unsigned int i, sum = 0;
546
547	edid[12] = width & 0xff;
548	edid[13] = width >> 8;
549	edid[14] = height & 0xff;
550	edid[15] = height >> 8;
551	edid[54] = clock & 0xff;
552	edid[55] = clock >> 8;
553	edid[56] = width & 0xff;
554	edid[58] = (width >> 4) & 0xf0;
555	edid[59] = height & 0xff;
556	edid[61] = (height >> 4) & 0xf0;
557	for (i = 0; i < EDID_SIZE - 1; ++i)
558	sum += edid[i];
559	edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
560	#if RTLNX_VER_MIN(4,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,7) \|\| RTLNX_RHEL_MAJ_PREREQ(8,1) \|\| RTLNX_SUSE_MAJ_PREREQ(15,1) \|\| RTLNX_SUSE_MAJ_PREREQ(12,5)
561	drm_connector_update_edid_property(connector, (struct edid *)edid);
562	#else
563	drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
564	#endif
565	}
566
567	static int vbox_get_modes(struct drm_connector *connector)
568	{
569	struct vbox_connector *vbox_connector = NULL;
570	struct drm_display_mode *mode = NULL;
571	struct vbox_private *vbox = NULL;
572	unsigned int num_modes = 0;
573	int preferred_width, preferred_height;
574
575	vbox_connector = to_vbox_connector(connector);
576	vbox = connector->dev->dev_private;
577	/*
578	* Heuristic: we do not want to tell the host that we support dynamic
579	* resizing unless we feel confident that the user space client using
580	* the video driver can handle hot-plug events. So the first time modes
581	* are queried after a "master" switch we tell the host that we do not,
582	* and immediately after we send the client a hot-plug notification as
583	* a test to see if they will respond and query again.
584	* That is also the reason why capabilities are reported to the host at
585	* this place in the code rather than elsewhere.
586	* We need to report the flags location before reporting the IRQ
587	* capability.
588	*/
589	VBoxHGSMIReportFlagsLocation(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
590	HOST_FLAGS_OFFSET);
591	if (vbox_connector->vbox_crtc->crtc_id == 0)
592	vbox_report_caps(vbox);
593	if (!vbox->initial_mode_queried) {
594	if (vbox_connector->vbox_crtc->crtc_id == 0) {
595	vbox->initial_mode_queried = true;
596	vbox_report_hotplug(vbox);
597	}
598	return drm_add_modes_noedid(connector, 800, 600);
599	}
600	/* Also assume that a client which supports hot-plugging also knows
601	* how to update the screen in a way we can use, the only known
602	* relevent client which cannot is Plymouth in Ubuntu 14.04. */
603	vbox->need_refresh_timer = false;
604	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
605	preferred_width = vbox_connector->mode_hint.width ?
606	vbox_connector->mode_hint.width : 1024;
607	preferred_height = vbox_connector->mode_hint.height ?
608	vbox_connector->mode_hint.height : 768;
609	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
610	60, false, false, false);
611	if (mode) {
612	mode->type \|= DRM_MODE_TYPE_PREFERRED;
613	drm_mode_probed_add(connector, mode);
614	++num_modes;
615	}
616	vbox_set_edid(connector, preferred_width, preferred_height);
617
618	#if RTLNX_VER_MIN(3,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
619	if (vbox_connector->vbox_crtc->x_hint != -1)
620	drm_object_property_set_value(&connector->base,
621	vbox->dev->mode_config.suggested_x_property,
622	vbox_connector->vbox_crtc->x_hint);
623	else
624	drm_object_property_set_value(&connector->base,
625	vbox->dev->mode_config.suggested_x_property, 0);
626
627	if (vbox_connector->vbox_crtc->y_hint != -1)
628	drm_object_property_set_value(&connector->base,
629	vbox->dev->mode_config.suggested_y_property,
630	vbox_connector->vbox_crtc->y_hint);
631	else
632	drm_object_property_set_value(&connector->base,
633	vbox->dev->mode_config.suggested_y_property, 0);
634	#endif
635
636	return num_modes;
637	}
638
639	#if RTLNX_VER_MAX(3,14,0) && !RTLNX_RHEL_MAJ_PREREQ(7,1)
640	static int vbox_mode_valid(struct drm_connector *connector,
641	#else
642	static enum drm_mode_status vbox_mode_valid(struct drm_connector *connector,
643	#endif
644	struct drm_display_mode *mode)
645	{
646	return MODE_OK;
647	}
648
649	static void vbox_connector_destroy(struct drm_connector *connector)
650	{
651	#if RTLNX_VER_MAX(3,17,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
652	drm_sysfs_connector_remove(connector);
653	#else
654	drm_connector_unregister(connector);
655	#endif
656	drm_connector_cleanup(connector);
657	kfree(connector);
658	}
659
660	static enum drm_connector_status
661	vbox_connector_detect(struct drm_connector *connector, bool force)
662	{
663	struct vbox_connector *vbox_connector;
664
665	vbox_connector = to_vbox_connector(connector);
666
667	return vbox_connector->mode_hint.disconnected ?
668	connector_status_disconnected : connector_status_connected;
669	}
670
671	static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
672	u32 max_y)
673	{
674	struct vbox_connector *vbox_connector;
675	struct drm_device *dev;
676	struct drm_display_mode mode, iterator;
677
678	vbox_connector = to_vbox_connector(connector);
679	dev = vbox_connector->base.dev;
680	list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
681	list_del(&mode->head);
682	drm_mode_destroy(dev, mode);
683	}
684
685	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
686	}
687
688	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
689	.mode_valid = vbox_mode_valid,
690	.get_modes = vbox_get_modes,
691	.best_encoder = vbox_best_single_encoder,
692	};
693
694	static const struct drm_connector_funcs vbox_connector_funcs = {
695	.dpms = drm_helper_connector_dpms,
696	.detect = vbox_connector_detect,
697	.fill_modes = vbox_fill_modes,
698	.destroy = vbox_connector_destroy,
699	};
700
701	static int vbox_connector_init(struct drm_device *dev,
702	struct vbox_crtc *vbox_crtc,
703	struct drm_encoder *encoder)
704	{
705	struct vbox_connector *vbox_connector;
706	struct drm_connector *connector;
707
708	vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
709	if (!vbox_connector)
710	return -ENOMEM;
711
712	connector = &vbox_connector->base;
713	vbox_connector->vbox_crtc = vbox_crtc;
714
715	drm_connector_init(dev, connector, &vbox_connector_funcs,
716	DRM_MODE_CONNECTOR_VGA);
717	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
718
719	connector->interlace_allowed = 0;
720	connector->doublescan_allowed = 0;
721
722	#if RTLNX_VER_MIN(3,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
723	drm_mode_create_suggested_offset_properties(dev);
724	drm_object_attach_property(&connector->base,
725	dev->mode_config.suggested_x_property, 0);
726	drm_object_attach_property(&connector->base,
727	dev->mode_config.suggested_y_property, 0);
728	#endif
729	#if RTLNX_VER_MAX(3,17,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
730	drm_sysfs_connector_add(connector);
731	#else
732	drm_connector_register(connector);
733	#endif
734
735	#if RTLNX_VER_MIN(4,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,7) \|\| RTLNX_RHEL_MAJ_PREREQ(8,1) \|\| RTLNX_SUSE_MAJ_PREREQ(15,1) \|\| RTLNX_SUSE_MAJ_PREREQ(12,5)
736	drm_connector_attach_encoder(connector, encoder);
737	#else
738	drm_mode_connector_attach_encoder(connector, encoder);
739	#endif
740
741	return 0;
742	}
743
744	int vbox_mode_init(struct drm_device *dev)
745	{
746	struct vbox_private *vbox = dev->dev_private;
747	struct drm_encoder *encoder;
748	struct vbox_crtc *vbox_crtc;
749	unsigned int i;
750	int ret;
751
752	/* vbox_cursor_init(dev); */
753	for (i = 0; i < vbox->num_crtcs; ++i) {
754	vbox_crtc = vbox_crtc_init(dev, i);
755	if (!vbox_crtc)
756	return -ENOMEM;
757	encoder = vbox_encoder_init(dev, i);
758	if (!encoder)
759	return -ENOMEM;
760	ret = vbox_connector_init(dev, vbox_crtc, encoder);
761	if (ret)
762	return ret;
763	}
764
765	return 0;
766	}
767
768	void vbox_mode_fini(struct drm_device *dev)
769	{
770	/* vbox_cursor_fini(dev); */
771	}
772
773	/**
774	* Copy the ARGB image and generate the mask, which is needed in case the host
775	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
776	* if the corresponding alpha value in the ARGB image is greater than 0xF0.
777	*/
778	static void copy_cursor_image(u8 src, u8 dst, u32 width, u32 height,
779	size_t mask_size)
780	{
781	size_t line_size = (width + 7) / 8;
782	u32 i, j;
783
784	memcpy(dst + mask_size, src, width * height * 4);
785	for (i = 0; i < height; ++i)
786	for (j = 0; j < width; ++j)
787	if (((u32 )src)[i width + j] > 0xf0000000)
788	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
789	}
790
791	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
792	u32 handle, u32 width, u32 height,
793	s32 hot_x, s32 hot_y)
794	{
795	struct vbox_private *vbox = crtc->dev->dev_private;
796	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
797	struct ttm_bo_kmap_obj uobj_map;
798	size_t data_size, mask_size;
799	struct drm_gem_object *obj;
800	u32 flags, caps = 0;
801	struct vbox_bo *bo;
802	bool src_isiomem;
803	u8 *dst = NULL;
804	u8 *src;
805	int ret;
806
807	if (!handle) {
808	bool cursor_enabled = false;
809	struct drm_crtc *crtci;
810
811	/* Hide cursor. */
812	vbox_crtc->cursor_enabled = false;
813	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
814	head) {
815	if (to_vbox_crtc(crtci)->cursor_enabled)
816	cursor_enabled = true;
817	}
818
819	if (!cursor_enabled)
820	VBoxHGSMIUpdatePointerShape(vbox->guest_pool, 0, 0, 0,
821	0, 0, NULL, 0);
822	return 0;
823	}
824
825	vbox_crtc->cursor_enabled = true;
826
827	if (width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT \|\|
828	width == 0 \|\| height == 0)
829	return -EINVAL;
830	ret = VBoxQueryConfHGSMI(vbox->guest_pool,
831	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
832	if (ret)
833	return ret == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
834
835	if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
836	/*
837	* -EINVAL means cursor_set2() not supported, -EAGAIN means
838	* retry at once.
839	*/
840	return -EBUSY;
841	}
842
843	#if RTLNX_VER_MIN(4,7,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)
844	obj = drm_gem_object_lookup(file_priv, handle);
845	#else
846	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
847	#endif
848	if (!obj) {
849	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
850	return -ENOENT;
851	}
852
853	bo = gem_to_vbox_bo(obj);
854	ret = vbox_bo_reserve(bo, false);
855	if (ret)
856	goto out_unref_obj;
857
858	/*
859	* The mask must be calculated based on the alpha
860	* channel, one bit per ARGB word, and must be 32-bit
861	* padded.
862	*/
863	mask_size = ((width + 7) / 8 * height + 3) & ~3;
864	data_size = width * height * 4 + mask_size;
865	vbox->cursor_hot_x = hot_x;
866	vbox->cursor_hot_y = hot_y;
867	vbox->cursor_width = width;
868	vbox->cursor_height = height;
869	vbox->cursor_data_size = data_size;
870	dst = vbox->cursor_data;
871
872	#if RTLNX_VER_MIN(5,14,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
873	ret = ttm_bo_kmap(&bo->bo, 0, VBOX_BO_RESOURCE_NUM_PAGES(bo->bo.resource), &uobj_map);
874	#elif RTLNX_VER_MIN(5,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(8,5)
875	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.mem.num_pages, &uobj_map);
876	#else
877	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
878	#endif
879	if (ret) {
880	vbox->cursor_data_size = 0;
881	goto out_unreserve_bo;
882	}
883
884	src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
885	if (src_isiomem) {
886	DRM_ERROR("src cursor bo not in main memory\n");
887	ret = -EIO;
888	goto out_unmap_bo;
889	}
890
891	copy_cursor_image(src, dst, width, height, mask_size);
892
893	flags = VBOX_MOUSE_POINTER_VISIBLE \| VBOX_MOUSE_POINTER_SHAPE \|
894	VBOX_MOUSE_POINTER_ALPHA;
895	ret = VBoxHGSMIUpdatePointerShape(vbox->guest_pool, flags,
896	vbox->cursor_hot_x, vbox->cursor_hot_y,
897	width, height, dst, data_size);
898	ret = ret == VINF_SUCCESS ? 0 : ret == VERR_NO_MEMORY ? -ENOMEM :
899	ret == VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL;
900
901	out_unmap_bo:
902	ttm_bo_kunmap(&uobj_map);
903	out_unreserve_bo:
904	vbox_bo_unreserve(bo);
905	out_unref_obj:
906	#if RTLNX_VER_MIN(5,9,0) \|\| RTLNX_RHEL_MIN(8,4) \|\| RTLNX_SUSE_MAJ_PREREQ(15,3)
907	drm_gem_object_put(obj);
908	#else
909	drm_gem_object_put_unlocked(obj);
910	#endif
911
912	return ret;
913	}
914
915	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
916	{
917	struct vbox_private *vbox = crtc->dev->dev_private;
918	s32 crtc_x =
919	vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
920	s32 crtc_y =
921	vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
922	int ret;
923
924	x += vbox->cursor_hot_x;
925	y += vbox->cursor_hot_y;
926	if (x + crtc_x < 0 \|\| y + crtc_y < 0 \|\|
927	x + crtc_x >= vbox->input_mapping_width \|\|
928	y + crtc_y >= vbox->input_mapping_width \|\|
929	vbox->cursor_data_size == 0)
930	return 0;
931	ret = VBoxHGSMICursorPosition(vbox->guest_pool, true, x + crtc_x,
932	y + crtc_y, NULL, NULL);
933	return ret == VINF_SUCCESS ? 0 : ret == VERR_NO_MEMORY ? -ENOMEM : ret ==
934	VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL;
935	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 100765

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