vbox_mode.c@ 94330

Last change on this file since 94330 was 94330, checked in by vboxsync, 3 years ago
Additions: Linux: vboxvideo: Introduce initial support for RHEL 8.6 kernels (another attempt to exclude 8.99), bugref:4567.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 27.4 KB

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1	/* $Id: vbox_mode.c 94330 2022-03-22 19:23:04Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013-2022 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 RTLNX_VER_MIN(3,18,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
43	# include <drm/drm_plane_helper.h>
44	#endif
45	#if RTLNX_VER_MIN(5,1,0) \|\| RTLNX_RHEL_MAJ_PREREQ(8,1)
46	# include <drm/drm_probe_helper.h>
47	#endif
48
49	#include "VBoxVideo.h"
50
51	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
52	u32 handle, u32 width, u32 height,
53	s32 hot_x, s32 hot_y);
54	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
55
56	/**
57	* Set a graphics mode. Poke any required values into registers, do an HGSMI
58	* mode set and tell the host we support advanced graphics functions.
59	*/
60	static void vbox_do_modeset(struct drm_crtc *crtc,
61	const struct drm_display_mode *mode)
62	{
63	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
64	struct vbox_private *vbox;
65	int width, height, bpp, pitch;
66	u16 flags;
67	s32 x_offset, y_offset;
68
69	vbox = crtc->dev->dev_private;
70	width = mode->hdisplay ? mode->hdisplay : 640;
71	height = mode->vdisplay ? mode->vdisplay : 480;
72	#if RTLNX_VER_MIN(4,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
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 RTLNX_VER_MIN(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 RTLNX_VER_MIN(4,11,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
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, vbox_crtc->fb_offset +
111	crtc->x * bpp / 8 + crtc->y * pitch,
112	pitch, width, height,
113	vbox_crtc->blanked ? 0 : bpp, flags);
114	}
115
116	static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
117	{
118	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
119	struct vbox_private *vbox = crtc->dev->dev_private;
120
121	switch (mode) {
122	case DRM_MODE_DPMS_ON:
123	vbox_crtc->blanked = false;
124	/* Restart the refresh timer if necessary. */
125	schedule_delayed_work(&vbox->refresh_work, VBOX_REFRESH_PERIOD);
126	break;
127	case DRM_MODE_DPMS_STANDBY:
128	case DRM_MODE_DPMS_SUSPEND:
129	case DRM_MODE_DPMS_OFF:
130	vbox_crtc->blanked = true;
131	break;
132	}
133
134	mutex_lock(&vbox->hw_mutex);
135	vbox_do_modeset(crtc, &crtc->hwmode);
136	mutex_unlock(&vbox->hw_mutex);
137	}
138
139	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
140	const struct drm_display_mode *mode,
141	struct drm_display_mode *adjusted_mode)
142	{
143	return true;
144	}
145
146	/*
147	* Try to map the layout of virtual screens to the range of the input device.
148	* Return true if we need to re-set the crtc modes due to screen offset
149	* changes.
150	*/
151	static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
152	{
153	struct drm_crtc *crtci;
154	struct drm_connector *connectori;
155	struct drm_framebuffer *fb1 = NULL;
156	bool single_framebuffer = true;
157	bool old_single_framebuffer = vbox->single_framebuffer;
158	u16 width = 0, height = 0;
159
160	/*
161	* Are we using an X.Org-style single large frame-buffer for all crtcs?
162	* If so then screen layout can be deduced from the crtc offsets.
163	* Same fall-back if this is the fbdev frame-buffer.
164	*/
165	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
166	if (!fb1) {
167	fb1 = CRTC_FB(crtci);
168	if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
169	break;
170	} else if (CRTC_FB(crtci) && fb1 != CRTC_FB(crtci)) {
171	single_framebuffer = false;
172	}
173	}
174	if (single_framebuffer) {
175	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
176	head) {
177	if (to_vbox_crtc(crtci)->crtc_id != 0)
178	continue;
179
180	if (!CRTC_FB(crtci))
181	break;
182	vbox->single_framebuffer = true;
183	vbox->input_mapping_width = CRTC_FB(crtci)->width;
184	vbox->input_mapping_height = CRTC_FB(crtci)->height;
185	return old_single_framebuffer !=
186	vbox->single_framebuffer;
187	}
188	}
189	/* Otherwise calculate the total span of all screens. */
190	list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list,
191	head) {
192	struct vbox_connector *vbox_connector =
193	to_vbox_connector(connectori);
194	struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
195
196	width = max_t(u16, width, vbox_crtc->x_hint +
197	vbox_connector->mode_hint.width);
198	height = max_t(u16, height, vbox_crtc->y_hint +
199	vbox_connector->mode_hint.height);
200	}
201
202	vbox->single_framebuffer = false;
203	vbox->input_mapping_width = width;
204	vbox->input_mapping_height = height;
205
206	return old_single_framebuffer != vbox->single_framebuffer;
207	}
208
209	static int vbox_crtc_set_base(struct drm_crtc *crtc,
210	struct drm_framebuffer *old_fb,
211	struct drm_framebuffer *new_fb,
212	int x, int y)
213	{
214	struct vbox_private *vbox = crtc->dev->dev_private;
215	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
216	struct drm_gem_object *obj;
217	struct vbox_framebuffer *vbox_fb;
218	struct vbox_bo *bo;
219	int ret;
220	u64 gpu_addr;
221
222	vbox_fb = to_vbox_framebuffer(new_fb);
223	obj = vbox_fb->obj;
224	bo = gem_to_vbox_bo(obj);
225
226	ret = vbox_bo_reserve(bo, false);
227	if (ret)
228	return ret;
229
230	ret = vbox_bo_pin(bo, VBOX_MEM_TYPE_VRAM, &gpu_addr);
231	vbox_bo_unreserve(bo);
232	if (ret)
233	return ret;
234
235	/* Unpin the previous fb. Do this after the new one has been pinned rather
236	* than before and re-pinning it on failure in case that fails too. */
237	if (old_fb) {
238	vbox_fb = to_vbox_framebuffer(old_fb);
239	obj = vbox_fb->obj;
240	bo = gem_to_vbox_bo(obj);
241	ret = vbox_bo_reserve(bo, false);
242	/* This should never fail, as no one else should be accessing it and we
243	* should be running under the modeset locks. */
244	if (!ret) {
245	vbox_bo_unpin(bo);
246	vbox_bo_unreserve(bo);
247	}
248	else
249	{
250	DRM_ERROR("unable to lock buffer object: error %d\n", ret);
251	}
252	}
253
254	if (&vbox->fbdev->afb == vbox_fb)
255	vbox_fbdev_set_base(vbox, gpu_addr);
256
257	vbox_crtc->fb_offset = gpu_addr;
258	if (vbox_set_up_input_mapping(vbox)) {
259	struct drm_crtc *crtci;
260
261	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
262	head) {
263	vbox_do_modeset(crtci, &crtci->mode);
264	}
265	}
266
267	return 0;
268	}
269
270	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
271	struct drm_display_mode *mode,
272	struct drm_display_mode *adjusted_mode,
273	int x, int y, struct drm_framebuffer *old_fb)
274	{
275	struct vbox_private *vbox = crtc->dev->dev_private;
276	int ret = vbox_crtc_set_base(crtc, old_fb, CRTC_FB(crtc), x, y);
277	if (ret)
278	return ret;
279	mutex_lock(&vbox->hw_mutex);
280	vbox_do_modeset(crtc, mode);
281	VBoxHGSMIUpdateInputMapping(vbox->guest_pool, 0, 0,
282	vbox->input_mapping_width,
283	vbox->input_mapping_height);
284	mutex_unlock(&vbox->hw_mutex);
285
286	return ret;
287	}
288
289	static int vbox_crtc_page_flip(struct drm_crtc *crtc,
290	struct drm_framebuffer *fb,
291	#if RTLNX_VER_MIN(4,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,5)
292	struct drm_pending_vblank_event *event,
293	uint32_t page_flip_flags,
294	struct drm_modeset_acquire_ctx *ctx)
295	#elif RTLNX_VER_MIN(3,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,0)
296	struct drm_pending_vblank_event *event,
297	uint32_t page_flip_flags)
298	#else
299	struct drm_pending_vblank_event *event)
300	#endif
301	{
302	struct vbox_private *vbox = crtc->dev->dev_private;
303	struct drm_device *drm = vbox->dev;
304	unsigned long flags;
305	int rc;
306
307	rc = vbox_crtc_set_base(crtc, CRTC_FB(crtc), fb, 0, 0);
308	if (rc)
309	return rc;
310
311	vbox_do_modeset(crtc, &crtc->mode);
312	mutex_unlock(&vbox->hw_mutex);
313
314	spin_lock_irqsave(&drm->event_lock, flags);
315
316	if (event)
317	#if RTLNX_VER_MIN(3,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
318	drm_crtc_send_vblank_event(crtc, event);
319	#else
320	drm_send_vblank_event(drm, -1, event);
321	#endif
322
323	spin_unlock_irqrestore(&drm->event_lock, flags);
324
325	return 0;
326	}
327
328	static void vbox_crtc_disable(struct drm_crtc *crtc)
329	{
330	}
331
332	static void vbox_crtc_prepare(struct drm_crtc *crtc)
333	{
334	}
335
336	static void vbox_crtc_commit(struct drm_crtc *crtc)
337	{
338	}
339
340	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
341	.dpms = vbox_crtc_dpms,
342	.mode_fixup = vbox_crtc_mode_fixup,
343	.mode_set = vbox_crtc_mode_set,
344	.disable = vbox_crtc_disable,
345	.prepare = vbox_crtc_prepare,
346	.commit = vbox_crtc_commit,
347	};
348
349	static void vbox_crtc_reset(struct drm_crtc *crtc)
350	{
351	}
352
353	static void vbox_crtc_destroy(struct drm_crtc *crtc)
354	{
355	drm_crtc_cleanup(crtc);
356	kfree(crtc);
357	}
358
359	static const struct drm_crtc_funcs vbox_crtc_funcs = {
360	.cursor_move = vbox_cursor_move,
361	.cursor_set2 = vbox_cursor_set2,
362	.reset = vbox_crtc_reset,
363	.set_config = drm_crtc_helper_set_config,
364	/* .gamma_set = vbox_crtc_gamma_set, */
365	.page_flip = vbox_crtc_page_flip,
366	.destroy = vbox_crtc_destroy,
367	};
368
369	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned int i)
370	{
371	struct vbox_crtc *vbox_crtc;
372
373	vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
374	if (!vbox_crtc)
375	return NULL;
376
377	vbox_crtc->crtc_id = i;
378
379	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
380	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
381	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
382
383	return vbox_crtc;
384	}
385
386	static void vbox_encoder_destroy(struct drm_encoder *encoder)
387	{
388	drm_encoder_cleanup(encoder);
389	kfree(encoder);
390	}
391
392	#if RTLNX_VER_MAX(3,13,0) && !RTLNX_RHEL_MAJ_PREREQ(7,1)
393	static struct drm_encoder drm_encoder_find(struct drm_device dev, u32 id)
394	{
395	struct drm_mode_object *mo;
396
397	mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
398	return mo ? obj_to_encoder(mo) : NULL;
399	}
400	#endif
401
402	static struct drm_encoder *vbox_best_single_encoder(struct drm_connector
403	*connector)
404	{
405	#if RTLNX_VER_MIN(5,5,0) \|\| RTLNX_RHEL_MIN(8,3) \|\| RTLNX_SUSE_MAJ_PREREQ(15,3)
406	struct drm_encoder *encoder;
407
408	/* There is only one encoder per connector */
409	drm_connector_for_each_possible_encoder(connector, encoder)
410	return encoder;
411	#else /* < 5.5 \|\| RHEL < 8.3 */
412	int enc_id = connector->encoder_ids[0];
413
414	/* pick the encoder ids */
415	if (enc_id)
416	# if RTLNX_VER_MIN(4,15,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,6) \|\| (defined(CONFIG_SUSE_VERSION) && RTLNX_VER_MIN(4,12,0))
417	return drm_encoder_find(connector->dev, NULL, enc_id);
418	# else
419	return drm_encoder_find(connector->dev, enc_id);
420	# endif
421	#endif /* < 5.5 \|\| RHEL < 8.3 */
422	return NULL;
423	}
424
425	static const struct drm_encoder_funcs vbox_enc_funcs = {
426	.destroy = vbox_encoder_destroy,
427	};
428
429	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
430	{
431	}
432
433	static bool vbox_mode_fixup(struct drm_encoder *encoder,
434	const struct drm_display_mode *mode,
435	struct drm_display_mode *adjusted_mode)
436	{
437	return true;
438	}
439
440	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
441	struct drm_display_mode *mode,
442	struct drm_display_mode *adjusted_mode)
443	{
444	}
445
446	static void vbox_encoder_prepare(struct drm_encoder *encoder)
447	{
448	}
449
450	static void vbox_encoder_commit(struct drm_encoder *encoder)
451	{
452	}
453
454	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
455	.dpms = vbox_encoder_dpms,
456	.mode_fixup = vbox_mode_fixup,
457	.prepare = vbox_encoder_prepare,
458	.commit = vbox_encoder_commit,
459	.mode_set = vbox_encoder_mode_set,
460	};
461
462	static struct drm_encoder vbox_encoder_init(struct drm_device dev,
463	unsigned int i)
464	{
465	struct vbox_encoder *vbox_encoder;
466
467	vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
468	if (!vbox_encoder)
469	return NULL;
470
471	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
472	#if RTLNX_VER_MIN(4,5,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,3)
473	DRM_MODE_ENCODER_DAC, NULL);
474	#else
475	DRM_MODE_ENCODER_DAC);
476	#endif
477	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
478
479	vbox_encoder->base.possible_crtcs = 1 << i;
480	return &vbox_encoder->base;
481	}
482
483	/**
484	* Generate EDID data with a mode-unique serial number for the virtual
485	* monitor to try to persuade Unity that different modes correspond to
486	* different monitors and it should not try to force the same resolution on
487	* them.
488	*/
489	static void vbox_set_edid(struct drm_connector *connector, int width,
490	int height)
491	{
492	enum { EDID_SIZE = 128 };
493	unsigned char edid[EDID_SIZE] = {
494	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
495	0x58, 0x58, /* manufacturer (VBX) */
496	0x00, 0x00, /* product code */
497	0x00, 0x00, 0x00, 0x00, /* serial number goes here */
498	0x01, /* week of manufacture */
499	0x00, /* year of manufacture */
500	0x01, 0x03, /* EDID version */
501	0x80, /* capabilities - digital */
502	0x00, /* horiz. res in cm, zero for projectors */
503	0x00, /* vert. res in cm */
504	0x78, /* display gamma (120 == 2.2). */
505	0xEE, /* features (standby, suspend, off, RGB, std */
506	/* colour space, preferred timing mode) */
507	0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
508	/* chromaticity for standard colour space. */
509	0x00, 0x00, 0x00, /* no default timings */
510	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
511	0x01, 0x01,
512	0x01, 0x01, 0x01, 0x01, /* no standard timings */
513	0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
514	0x02, 0x02,
515	/* descriptor block 1 goes below */
516	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
517	/* descriptor block 2, monitor ranges */
518	0x00, 0x00, 0x00, 0xFD, 0x00,
519	0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
520	0x20, 0x20,
521	/* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
522	0x20,
523	/* descriptor block 3, monitor name */
524	0x00, 0x00, 0x00, 0xFC, 0x00,
525	'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
526	'\n',
527	/* descriptor block 4: dummy data */
528	0x00, 0x00, 0x00, 0x10, 0x00,
529	0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
530	0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
531	0x20,
532	0x00, /* number of extensions */
533	0x00 /* checksum goes here */
534	};
535	int clock = (width + 6) * (height + 6) * 60 / 10000;
536	unsigned int i, sum = 0;
537
538	edid[12] = width & 0xff;
539	edid[13] = width >> 8;
540	edid[14] = height & 0xff;
541	edid[15] = height >> 8;
542	edid[54] = clock & 0xff;
543	edid[55] = clock >> 8;
544	edid[56] = width & 0xff;
545	edid[58] = (width >> 4) & 0xf0;
546	edid[59] = height & 0xff;
547	edid[61] = (height >> 4) & 0xf0;
548	for (i = 0; i < EDID_SIZE - 1; ++i)
549	sum += edid[i];
550	edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
551	#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)
552	drm_connector_update_edid_property(connector, (struct edid *)edid);
553	#else
554	drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
555	#endif
556	}
557
558	static int vbox_get_modes(struct drm_connector *connector)
559	{
560	struct vbox_connector *vbox_connector = NULL;
561	struct drm_display_mode *mode = NULL;
562	struct vbox_private *vbox = NULL;
563	unsigned int num_modes = 0;
564	int preferred_width, preferred_height;
565
566	vbox_connector = to_vbox_connector(connector);
567	vbox = connector->dev->dev_private;
568	/*
569	* Heuristic: we do not want to tell the host that we support dynamic
570	* resizing unless we feel confident that the user space client using
571	* the video driver can handle hot-plug events. So the first time modes
572	* are queried after a "master" switch we tell the host that we do not,
573	* and immediately after we send the client a hot-plug notification as
574	* a test to see if they will respond and query again.
575	* That is also the reason why capabilities are reported to the host at
576	* this place in the code rather than elsewhere.
577	* We need to report the flags location before reporting the IRQ
578	* capability.
579	*/
580	VBoxHGSMIReportFlagsLocation(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
581	HOST_FLAGS_OFFSET);
582	if (vbox_connector->vbox_crtc->crtc_id == 0)
583	vbox_report_caps(vbox);
584	if (!vbox->initial_mode_queried) {
585	if (vbox_connector->vbox_crtc->crtc_id == 0) {
586	vbox->initial_mode_queried = true;
587	vbox_report_hotplug(vbox);
588	}
589	return drm_add_modes_noedid(connector, 800, 600);
590	}
591	/* Also assume that a client which supports hot-plugging also knows
592	* how to update the screen in a way we can use, the only known
593	* relevent client which cannot is Plymouth in Ubuntu 14.04. */
594	vbox->need_refresh_timer = false;
595	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
596	preferred_width = vbox_connector->mode_hint.width ?
597	vbox_connector->mode_hint.width : 1024;
598	preferred_height = vbox_connector->mode_hint.height ?
599	vbox_connector->mode_hint.height : 768;
600	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
601	60, false, false, false);
602	if (mode) {
603	mode->type \|= DRM_MODE_TYPE_PREFERRED;
604	drm_mode_probed_add(connector, mode);
605	++num_modes;
606	}
607	vbox_set_edid(connector, preferred_width, preferred_height);
608
609	#if RTLNX_VER_MIN(3,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
610	if (vbox_connector->vbox_crtc->x_hint != -1)
611	drm_object_property_set_value(&connector->base,
612	vbox->dev->mode_config.suggested_x_property,
613	vbox_connector->vbox_crtc->x_hint);
614	else
615	drm_object_property_set_value(&connector->base,
616	vbox->dev->mode_config.suggested_x_property, 0);
617
618	if (vbox_connector->vbox_crtc->y_hint != -1)
619	drm_object_property_set_value(&connector->base,
620	vbox->dev->mode_config.suggested_y_property,
621	vbox_connector->vbox_crtc->y_hint);
622	else
623	drm_object_property_set_value(&connector->base,
624	vbox->dev->mode_config.suggested_y_property, 0);
625	#endif
626
627	return num_modes;
628	}
629
630	#if RTLNX_VER_MAX(3,14,0) && !RTLNX_RHEL_MAJ_PREREQ(7,1)
631	static int vbox_mode_valid(struct drm_connector *connector,
632	#else
633	static enum drm_mode_status vbox_mode_valid(struct drm_connector *connector,
634	#endif
635	struct drm_display_mode *mode)
636	{
637	return MODE_OK;
638	}
639
640	static void vbox_connector_destroy(struct drm_connector *connector)
641	{
642	#if RTLNX_VER_MAX(3,17,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
643	drm_sysfs_connector_remove(connector);
644	#else
645	drm_connector_unregister(connector);
646	#endif
647	drm_connector_cleanup(connector);
648	kfree(connector);
649	}
650
651	static enum drm_connector_status
652	vbox_connector_detect(struct drm_connector *connector, bool force)
653	{
654	struct vbox_connector *vbox_connector;
655
656	vbox_connector = to_vbox_connector(connector);
657
658	return vbox_connector->mode_hint.disconnected ?
659	connector_status_disconnected : connector_status_connected;
660	}
661
662	static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
663	u32 max_y)
664	{
665	struct vbox_connector *vbox_connector;
666	struct drm_device *dev;
667	struct drm_display_mode mode, iterator;
668
669	vbox_connector = to_vbox_connector(connector);
670	dev = vbox_connector->base.dev;
671	list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
672	list_del(&mode->head);
673	drm_mode_destroy(dev, mode);
674	}
675
676	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
677	}
678
679	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
680	.mode_valid = vbox_mode_valid,
681	.get_modes = vbox_get_modes,
682	.best_encoder = vbox_best_single_encoder,
683	};
684
685	static const struct drm_connector_funcs vbox_connector_funcs = {
686	.dpms = drm_helper_connector_dpms,
687	.detect = vbox_connector_detect,
688	.fill_modes = vbox_fill_modes,
689	.destroy = vbox_connector_destroy,
690	};
691
692	static int vbox_connector_init(struct drm_device *dev,
693	struct vbox_crtc *vbox_crtc,
694	struct drm_encoder *encoder)
695	{
696	struct vbox_connector *vbox_connector;
697	struct drm_connector *connector;
698
699	vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
700	if (!vbox_connector)
701	return -ENOMEM;
702
703	connector = &vbox_connector->base;
704	vbox_connector->vbox_crtc = vbox_crtc;
705
706	drm_connector_init(dev, connector, &vbox_connector_funcs,
707	DRM_MODE_CONNECTOR_VGA);
708	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
709
710	connector->interlace_allowed = 0;
711	connector->doublescan_allowed = 0;
712
713	#if RTLNX_VER_MIN(3,19,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,2)
714	drm_mode_create_suggested_offset_properties(dev);
715	drm_object_attach_property(&connector->base,
716	dev->mode_config.suggested_x_property, 0);
717	drm_object_attach_property(&connector->base,
718	dev->mode_config.suggested_y_property, 0);
719	#endif
720	#if RTLNX_VER_MAX(3,17,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
721	drm_sysfs_connector_add(connector);
722	#else
723	drm_connector_register(connector);
724	#endif
725
726	#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)
727	drm_connector_attach_encoder(connector, encoder);
728	#else
729	drm_mode_connector_attach_encoder(connector, encoder);
730	#endif
731
732	return 0;
733	}
734
735	int vbox_mode_init(struct drm_device *dev)
736	{
737	struct vbox_private *vbox = dev->dev_private;
738	struct drm_encoder *encoder;
739	struct vbox_crtc *vbox_crtc;
740	unsigned int i;
741	int ret;
742
743	/* vbox_cursor_init(dev); */
744	for (i = 0; i < vbox->num_crtcs; ++i) {
745	vbox_crtc = vbox_crtc_init(dev, i);
746	if (!vbox_crtc)
747	return -ENOMEM;
748	encoder = vbox_encoder_init(dev, i);
749	if (!encoder)
750	return -ENOMEM;
751	ret = vbox_connector_init(dev, vbox_crtc, encoder);
752	if (ret)
753	return ret;
754	}
755
756	return 0;
757	}
758
759	void vbox_mode_fini(struct drm_device *dev)
760	{
761	/* vbox_cursor_fini(dev); */
762	}
763
764	/**
765	* Copy the ARGB image and generate the mask, which is needed in case the host
766	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
767	* if the corresponding alpha value in the ARGB image is greater than 0xF0.
768	*/
769	static void copy_cursor_image(u8 src, u8 dst, u32 width, u32 height,
770	size_t mask_size)
771	{
772	size_t line_size = (width + 7) / 8;
773	u32 i, j;
774
775	memcpy(dst + mask_size, src, width * height * 4);
776	for (i = 0; i < height; ++i)
777	for (j = 0; j < width; ++j)
778	if (((u32 )src)[i width + j] > 0xf0000000)
779	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
780	}
781
782	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
783	u32 handle, u32 width, u32 height,
784	s32 hot_x, s32 hot_y)
785	{
786	struct vbox_private *vbox = crtc->dev->dev_private;
787	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
788	struct ttm_bo_kmap_obj uobj_map;
789	size_t data_size, mask_size;
790	struct drm_gem_object *obj;
791	u32 flags, caps = 0;
792	struct vbox_bo *bo;
793	bool src_isiomem;
794	u8 *dst = NULL;
795	u8 *src;
796	int ret;
797
798	if (!handle) {
799	bool cursor_enabled = false;
800	struct drm_crtc *crtci;
801
802	/* Hide cursor. */
803	vbox_crtc->cursor_enabled = false;
804	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
805	head) {
806	if (to_vbox_crtc(crtci)->cursor_enabled)
807	cursor_enabled = true;
808	}
809
810	if (!cursor_enabled)
811	VBoxHGSMIUpdatePointerShape(vbox->guest_pool, 0, 0, 0,
812	0, 0, NULL, 0);
813	return 0;
814	}
815
816	vbox_crtc->cursor_enabled = true;
817
818	if (width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT \|\|
819	width == 0 \|\| height == 0)
820	return -EINVAL;
821	ret = VBoxQueryConfHGSMI(vbox->guest_pool,
822	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
823	if (ret)
824	return ret == VERR_NO_MEMORY ? -ENOMEM : -EINVAL;
825
826	if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
827	/*
828	* -EINVAL means cursor_set2() not supported, -EAGAIN means
829	* retry at once.
830	*/
831	return -EBUSY;
832	}
833
834	#if RTLNX_VER_MIN(4,7,0) \|\| RTLNX_RHEL_MAJ_PREREQ(7,4)
835	obj = drm_gem_object_lookup(file_priv, handle);
836	#else
837	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
838	#endif
839	if (!obj) {
840	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
841	return -ENOENT;
842	}
843
844	bo = gem_to_vbox_bo(obj);
845	ret = vbox_bo_reserve(bo, false);
846	if (ret)
847	goto out_unref_obj;
848
849	/*
850	* The mask must be calculated based on the alpha
851	* channel, one bit per ARGB word, and must be 32-bit
852	* padded.
853	*/
854	mask_size = ((width + 7) / 8 * height + 3) & ~3;
855	data_size = width * height * 4 + mask_size;
856	vbox->cursor_hot_x = hot_x;
857	vbox->cursor_hot_y = hot_y;
858	vbox->cursor_width = width;
859	vbox->cursor_height = height;
860	vbox->cursor_data_size = data_size;
861	dst = vbox->cursor_data;
862
863	#if RTLNX_VER_MIN(5,14,0) \|\| RTLNX_RHEL_RANGE(8,6, 8,99)
864	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.resource->num_pages, &uobj_map);
865	#elif RTLNX_VER_MIN(5,12,0) \|\| RTLNX_RHEL_MAJ_PREREQ(8,5)
866	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.mem.num_pages, &uobj_map);
867	#else
868	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
869	#endif
870	if (ret) {
871	vbox->cursor_data_size = 0;
872	goto out_unreserve_bo;
873	}
874
875	src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
876	if (src_isiomem) {
877	DRM_ERROR("src cursor bo not in main memory\n");
878	ret = -EIO;
879	goto out_unmap_bo;
880	}
881
882	copy_cursor_image(src, dst, width, height, mask_size);
883
884	flags = VBOX_MOUSE_POINTER_VISIBLE \| VBOX_MOUSE_POINTER_SHAPE \|
885	VBOX_MOUSE_POINTER_ALPHA;
886	ret = VBoxHGSMIUpdatePointerShape(vbox->guest_pool, flags,
887	vbox->cursor_hot_x, vbox->cursor_hot_y,
888	width, height, dst, data_size);
889	ret = ret == VINF_SUCCESS ? 0 : ret == VERR_NO_MEMORY ? -ENOMEM :
890	ret == VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL;
891
892	out_unmap_bo:
893	ttm_bo_kunmap(&uobj_map);
894	out_unreserve_bo:
895	vbox_bo_unreserve(bo);
896	out_unref_obj:
897	#if RTLNX_VER_MIN(5,9,0) \|\| RTLNX_RHEL_MIN(8,4) \|\| RTLNX_SUSE_MAJ_PREREQ(15,3)
898	drm_gem_object_put(obj);
899	#else
900	drm_gem_object_put_unlocked(obj);
901	#endif
902
903	return ret;
904	}
905
906	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
907	{
908	struct vbox_private *vbox = crtc->dev->dev_private;
909	s32 crtc_x =
910	vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
911	s32 crtc_y =
912	vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
913	int ret;
914
915	x += vbox->cursor_hot_x;
916	y += vbox->cursor_hot_y;
917	if (x + crtc_x < 0 \|\| y + crtc_y < 0 \|\|
918	x + crtc_x >= vbox->input_mapping_width \|\|
919	y + crtc_y >= vbox->input_mapping_width \|\|
920	vbox->cursor_data_size == 0)
921	return 0;
922	ret = VBoxHGSMICursorPosition(vbox->guest_pool, true, x + crtc_x,
923	y + crtc_y, NULL, NULL);
924	return ret == VINF_SUCCESS ? 0 : ret == VERR_NO_MEMORY ? -ENOMEM : ret ==
925	VERR_NOT_SUPPORTED ? -EBUSY : -EINVAL;
926	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 94330

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