vbox_mode.c@ 59552

Last change on this file since 59552 was 59526, checked in by vboxsync, 9 years ago
bugref:8087: Additions/x11: support non-root X server: adjust DRM/KMS driver code to bring it back closer to the original AST driver on which it is based, including enabling ejecting unused frame-buffers from VRAM to save memory.
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File size: 24.7 KB

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1	/* $Id: vbox_mode.c 59526 2016-01-31 09:31:25Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	* --------------------------------------------------------------------
17	*
18	* This code is based on
19	* ast_mode.c
20	* with the following copyright and permission notice:
21	*
22	* Copyright 2012 Red Hat Inc.
23	* Parts based on xf86-video-ast
24	* Copyright (c) 2005 ASPEED Technology Inc.
25	*
26	* Permission is hereby granted, free of charge, to any person obtaining a
27	* copy of this software and associated documentation files (the
28	* "Software"), to deal in the Software without restriction, including
29	* without limitation the rights to use, copy, modify, merge, publish,
30	* distribute, sub license, and/or sell copies of the Software, and to
31	* permit persons to whom the Software is furnished to do so, subject to
32	* the following conditions:
33	*
34	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
37	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
38	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
39	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
40	* USE OR OTHER DEALINGS IN THE SOFTWARE.
41	*
42	* The above copyright notice and this permission notice (including the
43	* next paragraph) shall be included in all copies or substantial portions
44	* of the Software.
45	*
46	*/
47	/*
48	* Authors: Dave Airlie <[email protected]>
49	*/
50	#include "vbox_drv.h"
51
52	#include <VBox/VBoxVideo.h>
53
54	#include <linux/export.h>
55	#include <drm/drm_crtc_helper.h>
56	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0)
57	# include <drm/drm_plane_helper.h>
58	#endif
59
60	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
61	uint32_t handle, uint32_t width, uint32_t height,
62	int32_t hot_x, int32_t hot_y);
63	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
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, cBPP, pitch;
74	unsigned iCrtc;
75	uint16_t fFlags;
76
77	LogFunc(("vboxvideo: %d: vbox_crtc=%p, CRTC_FB(crtc)=%p\n", __LINE__,
78	vbox_crtc, CRTC_FB(crtc)));
79	vbox = crtc->dev->dev_private;
80	width = mode->hdisplay ? mode->hdisplay : 640;
81	height = mode->vdisplay ? mode->vdisplay : 480;
82	iCrtc = vbox_crtc->crtc_id;
83	cBPP = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
84	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0)
85	pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * cBPP / 8;
86	#else
87	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * cBPP / 8;
88	#endif
89	/* if (vbox_crtc->crtc_id == 0 && crtc->enabled)
90	VBoxVideoSetModeRegisters(width, height, pitch * 8 / cBPP,
91	CRTC_FB(crtc)->bits_per_pixel, 0,
92	crtc->x, crtc->y); */
93	fFlags = VBVA_SCREEN_F_ACTIVE;
94	fFlags \|= (crtc->enabled ? 0 : VBVA_SCREEN_F_DISABLED);
95	VBoxHGSMIProcessDisplayInfo(&vbox->Ctx, vbox_crtc->crtc_id,
96	crtc->x, crtc->y,
97	crtc->x * cBPP / 8 + crtc->y * pitch,
98	pitch, width, height,
99	vbox_crtc->fBlanked ? 0 : cBPP, fFlags);
100	VBoxHGSMIReportFlagsLocation(&vbox->Ctx, vbox->offHostFlags);
101	VBoxHGSMISendCapsInfo(&vbox->Ctx, VBVACAPS_VIDEO_MODE_HINTS \| VBVACAPS_DISABLE_CURSOR_INTEGRATION);
102	LogFunc(("vboxvideo: %d\n", __LINE__));
103	}
104
105	static int vbox_set_view(struct drm_crtc *crtc)
106	{
107	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
108	struct vbox_private *vbox = crtc->dev->dev_private;
109	void *p;
110
111	LogFunc(("vboxvideo: %d: vbox_crtc=%p\n", __LINE__, vbox_crtc));
112	/* Tell the host about the view. This design originally targeted the
113	* Windows XP driver architecture and assumed that each screen would have
114	* a dedicated frame buffer with the command buffer following it, the whole
115	* being a "view". The host works out which screen a command buffer belongs
116	* to by checking whether it is in the first view, then whether it is in the
117	* second and so on. The first match wins. We cheat around this by making
118	* the first view be the managed memory plus the first command buffer, the
119	* second the same plus the second buffer and so on. */
120	p = VBoxHGSMIBufferAlloc(&vbox->Ctx, sizeof(VBVAINFOVIEW), HGSMI_CH_VBVA,
121	VBVA_INFO_VIEW);
122	if (p)
123	{
124	VBVAINFOVIEW pInfo = (VBVAINFOVIEW )p;
125	pInfo->u32ViewIndex = vbox_crtc->crtc_id;
126	pInfo->u32ViewOffset = vbox_crtc->offFB;
127	pInfo->u32ViewSize = vbox->vram_size - vbox_crtc->offFB
128	+ vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
129	pInfo->u32MaxScreenSize = vbox->vram_size - vbox_crtc->offFB;
130	VBoxHGSMIBufferSubmit(&vbox->Ctx, p);
131	VBoxHGSMIBufferFree(&vbox->Ctx, p);
132	}
133	else
134	return -ENOMEM;
135	LogFunc(("vboxvideo: %d: p=%p\n", __LINE__, p));
136	return 0;
137	}
138
139	static void vbox_crtc_load_lut(struct drm_crtc *crtc)
140	{
141
142	}
143
144	static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
145	{
146	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
147	struct vbox_private *vbox = crtc->dev->dev_private;
148	unsigned long flags;
149
150	LogFunc(("vboxvideo: %d: vbox_crtc=%p, mode=%d\n", __LINE__, vbox_crtc,
151	mode));
152	switch (mode) {
153	case DRM_MODE_DPMS_ON:
154	vbox_crtc->fBlanked = false;
155	break;
156	case DRM_MODE_DPMS_STANDBY:
157	case DRM_MODE_DPMS_SUSPEND:
158	case DRM_MODE_DPMS_OFF:
159	vbox_crtc->fBlanked = true;
160	break;
161	}
162	spin_lock_irqsave(&vbox->dev_lock, flags);
163	vbox_do_modeset(crtc, &crtc->hwmode);
164	spin_unlock_irqrestore(&vbox->dev_lock, flags);
165	LogFunc(("vboxvideo: %d\n", __LINE__));
166	}
167
168	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
169	const struct drm_display_mode *mode,
170	struct drm_display_mode *adjusted_mode)
171	{
172	return true;
173	}
174
175	/* We move buffers which are not in active use out of VRAM to save memory. */
176	static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
177	struct drm_framebuffer *fb,
178	int x, int y, int atomic)
179	{
180	struct vbox_private *vbox = crtc->dev->dev_private;
181	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
182	struct drm_gem_object *obj;
183	struct vbox_framebuffer *vbox_fb;
184	struct vbox_bo *bo;
185	int ret;
186	u64 gpu_addr;
187
188	LogFunc(("vboxvideo: %d: fb=%p, vbox_crtc=%p\n", __LINE__, fb, vbox_crtc));
189	/* push the previous fb to system ram */
190	if (!atomic && fb) {
191	vbox_fb = to_vbox_framebuffer(fb);
192	obj = vbox_fb->obj;
193	bo = gem_to_vbox_bo(obj);
194	ret = vbox_bo_reserve(bo, false);
195	if (ret)
196	return ret;
197	vbox_bo_push_sysram(bo);
198	vbox_bo_unreserve(bo);
199	}
200
201	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
202	obj = vbox_fb->obj;
203	bo = gem_to_vbox_bo(obj);
204
205	ret = vbox_bo_reserve(bo, false);
206	if (ret)
207	return ret;
208
209	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
210	if (ret) {
211	vbox_bo_unreserve(bo);
212	return ret;
213	}
214
215	if (&vbox->fbdev->afb == vbox_fb) {
216	/* if pushing console in kmap it */
217	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
218	if (ret)
219	DRM_ERROR("failed to kmap fbcon\n");
220	}
221	vbox_bo_unreserve(bo);
222
223	/* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
224	vbox_crtc->offFB = gpu_addr;
225
226	LogFunc(("vboxvideo: %d: vbox_fb=%p, obj=%p, bo=%p, gpu_addr=%u\n",
227	__LINE__, vbox_fb, obj, bo, (unsigned)gpu_addr));
228	return 0;
229	}
230
231	static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
232	struct drm_framebuffer *old_fb)
233	{
234	LogFunc(("vboxvideo: %d\n", __LINE__));
235	return vbox_crtc_do_set_base(crtc, old_fb, x, y, 0);
236	}
237
238	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
239	struct drm_display_mode *mode,
240	struct drm_display_mode *adjusted_mode,
241	int x, int y,
242	struct drm_framebuffer *old_fb)
243	{
244	struct vbox_private *vbox = crtc->dev->dev_private;
245	unsigned long flags;
246	int rc = 0;
247
248	LogFunc(("vboxvideo: %d: vbox=%p\n", __LINE__, vbox));
249	vbox_crtc_mode_set_base(crtc, x, y, old_fb);
250	spin_lock_irqsave(&vbox->dev_lock, flags);
251	rc = vbox_set_view(crtc);
252	if (!rc)
253	vbox_do_modeset(crtc, mode);
254	spin_unlock_irqrestore(&vbox->dev_lock, flags);
255	LogFunc(("vboxvideo: %d\n", __LINE__));
256	return rc;
257	}
258
259	static void vbox_crtc_disable(struct drm_crtc *crtc)
260	{
261
262	}
263
264	static void vbox_crtc_prepare(struct drm_crtc *crtc)
265	{
266
267	}
268
269	static void vbox_crtc_commit(struct drm_crtc *crtc)
270	{
271
272	}
273
274
275	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
276	.dpms = vbox_crtc_dpms,
277	.mode_fixup = vbox_crtc_mode_fixup,
278	.mode_set = vbox_crtc_mode_set,
279	/* .mode_set_base = vbox_crtc_mode_set_base, */
280	.disable = vbox_crtc_disable,
281	.load_lut = vbox_crtc_load_lut,
282	.prepare = vbox_crtc_prepare,
283	.commit = vbox_crtc_commit,
284
285	};
286
287	static void vbox_crtc_reset(struct drm_crtc *crtc)
288	{
289
290	}
291
292
293	static void vbox_crtc_destroy(struct drm_crtc *crtc)
294	{
295	drm_crtc_cleanup(crtc);
296	kfree(crtc);
297	}
298
299	static const struct drm_crtc_funcs vbox_crtc_funcs = {
300	.cursor_move = vbox_cursor_move,
301	#ifdef DRM_IOCTL_MODE_CURSOR2
302	.cursor_set2 = vbox_cursor_set2,
303	#endif
304	.reset = vbox_crtc_reset,
305	.set_config = drm_crtc_helper_set_config,
306	/* .gamma_set = vbox_crtc_gamma_set, */
307	.destroy = vbox_crtc_destroy,
308	};
309
310	static int vbox_crtc_init(struct drm_device *dev, unsigned i)
311	{
312	struct vbox_crtc *crtc;
313
314	LogFunc(("vboxvideo: %d\n", __LINE__));
315	crtc = kzalloc(sizeof(struct vbox_crtc), GFP_KERNEL);
316	if (!crtc)
317	return -ENOMEM;
318	crtc->crtc_id = i;
319
320	drm_crtc_init(dev, &crtc->base, &vbox_crtc_funcs);
321	drm_mode_crtc_set_gamma_size(&crtc->base, 256);
322	drm_crtc_helper_add(&crtc->base, &vbox_crtc_helper_funcs);
323	LogFunc(("vboxvideo: %d: crtc=%p\n", __LINE__, crtc));
324
325	return 0;
326	}
327
328	static void vbox_encoder_destroy(struct drm_encoder *encoder)
329	{
330	LogFunc(("vboxvideo: %d: encoder=%p\n", __LINE__, encoder));
331	drm_encoder_cleanup(encoder);
332	kfree(encoder);
333	}
334
335
336	static struct drm_encoder vbox_best_single_encoder(struct drm_connector connector)
337	{
338	int enc_id = connector->encoder_ids[0];
339
340	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
341	/* pick the encoder ids */
342	if (enc_id)
343	return drm_encoder_find(connector->dev, enc_id);
344	LogFunc(("vboxvideo: %d\n", __LINE__));
345	return NULL;
346	}
347
348
349	static const struct drm_encoder_funcs vbox_enc_funcs = {
350	.destroy = vbox_encoder_destroy,
351	};
352
353	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
354	{
355
356	}
357
358	static bool vbox_mode_fixup(struct drm_encoder *encoder,
359	const struct drm_display_mode *mode,
360	struct drm_display_mode *adjusted_mode)
361	{
362	return true;
363	}
364
365	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
366	struct drm_display_mode *mode,
367	struct drm_display_mode *adjusted_mode)
368	{
369	}
370
371	static void vbox_encoder_prepare(struct drm_encoder *encoder)
372	{
373
374	}
375
376	static void vbox_encoder_commit(struct drm_encoder *encoder)
377	{
378
379	}
380
381
382	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
383	.dpms = vbox_encoder_dpms,
384	.mode_fixup = vbox_mode_fixup,
385	.prepare = vbox_encoder_prepare,
386	.commit = vbox_encoder_commit,
387	.mode_set = vbox_encoder_mode_set,
388	};
389
390	static struct drm_encoder vbox_encoder_init(struct drm_device dev, unsigned i)
391	{
392	struct vbox_encoder *vbox_encoder;
393
394	LogFunc(("vboxvideo: %d: dev=%d\n", __LINE__));
395	vbox_encoder = kzalloc(sizeof(struct vbox_encoder), GFP_KERNEL);
396	if (!vbox_encoder)
397	return NULL;
398
399	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
400	DRM_MODE_ENCODER_DAC);
401	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
402
403	vbox_encoder->base.possible_crtcs = 1 << i;
404	LogFunc(("vboxvideo: %d: vbox_encoder=%p\n", __LINE__, vbox_encoder));
405	return &vbox_encoder->base;
406	}
407
408	static void vboxUpdateHints(struct vbox_connector *vbox_connector)
409	{
410	struct vbox_private *pVBox;
411	int rc;
412
413	LogFunc(("vboxvideo: %d: vbox_connector=%p\n", __LINE__, vbox_connector));
414	pVBox = vbox_connector->base.dev->dev_private;
415	rc = VBoxHGSMIGetModeHints(&pVBox->Ctx, pVBox->cCrtcs, pVBox->paVBVAModeHints);
416	AssertMsgRCReturnVoid(rc, ("VBoxHGSMIGetModeHints failed, rc=%Rrc.\n", rc));
417	if (pVBox->paVBVAModeHints[vbox_connector->iCrtc].magic == VBVAMODEHINT_MAGIC)
418	{
419	vbox_connector->modeHint.cX = pVBox->paVBVAModeHints[vbox_connector->iCrtc].cx & 0x8fff;
420	vbox_connector->modeHint.cY = pVBox->paVBVAModeHints[vbox_connector->iCrtc].cy & 0x8fff;
421	vbox_connector->modeHint.fDisconnected = !(pVBox->paVBVAModeHints[vbox_connector->iCrtc].fEnabled);
422	LogFunc(("vboxvideo: %d: cX=%u, cY=%u, fDisconnected=%RTbool\n", __LINE__,
423	(unsigned)vbox_connector->modeHint.cX, (unsigned)vbox_connector->modeHint.cY,
424	vbox_connector->modeHint.fDisconnected));
425	}
426	}
427
428	static int vbox_get_modes(struct drm_connector *connector)
429	{
430	struct vbox_connector *vbox_connector = NULL;
431	struct drm_display_mode *pMode = NULL;
432	unsigned cModes = 0;
433	int cxPreferred, cyPreferred;
434
435	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
436	vbox_connector = to_vbox_connector(connector);
437	vboxUpdateHints(vbox_connector);
438	cModes = drm_add_modes_noedid(connector, 2560, 1600);
439	cxPreferred = vbox_connector->modeHint.cX ? vbox_connector->modeHint.cX : 1024;
440	cyPreferred = vbox_connector->modeHint.cY ? vbox_connector->modeHint.cY : 768;
441	pMode = drm_cvt_mode(connector->dev, cxPreferred, cyPreferred, 60, false,
442	false, false);
443	if (pMode)
444	{
445	pMode->type \|= DRM_MODE_TYPE_PREFERRED;
446	drm_mode_probed_add(connector, pMode);
447	++cModes;
448	}
449	return cModes;
450	}
451
452	static int vbox_mode_valid(struct drm_connector *connector,
453	struct drm_display_mode *mode)
454	{
455	return MODE_OK;
456	}
457
458	static void vbox_connector_destroy(struct drm_connector *connector)
459	{
460	struct vbox_connector *vbox_connector = NULL;
461
462	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
463	vbox_connector = to_vbox_connector(connector);
464	device_remove_file(connector->dev->dev, &vbox_connector->deviceAttribute);
465	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
466	drm_sysfs_connector_remove(connector);
467	#else
468	drm_connector_unregister(connector);
469	#endif
470	drm_connector_cleanup(connector);
471	kfree(connector);
472	}
473
474	static enum drm_connector_status
475	vbox_connector_detect(struct drm_connector *connector, bool force)
476	{
477	struct vbox_connector *vbox_connector = NULL;
478
479	(void) force;
480	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
481	vbox_connector = to_vbox_connector(connector);
482	vboxUpdateHints(vbox_connector);
483	return !vbox_connector->modeHint.fDisconnected;
484	}
485
486	static int vbox_fill_modes(struct drm_connector *connector, uint32_t xMax, uint32_t yMax)
487	{
488	struct vbox_connector *vbox_connector;
489	struct drm_device *pDrmDev;
490	struct drm_display_mode pMode, pIter;
491
492	LogFunc(("vboxvideo: %d: connector=%p, xMax=%lu, yMax = %lu\n", __LINE__,
493	connector, (unsigned long)xMax, (unsigned long)yMax));
494	vbox_connector = to_vbox_connector(connector);
495	pDrmDev = vbox_connector->base.dev;
496	list_for_each_entry_safe(pMode, pIter, &connector->modes, head)
497	{
498	list_del(&pMode->head);
499	drm_mode_destroy(pDrmDev, pMode);
500	}
501	return drm_helper_probe_single_connector_modes(connector, xMax, yMax);
502	}
503
504	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
505	.mode_valid = vbox_mode_valid,
506	.get_modes = vbox_get_modes,
507	.best_encoder = vbox_best_single_encoder,
508	};
509
510	static const struct drm_connector_funcs vbox_connector_funcs = {
511	.dpms = drm_helper_connector_dpms,
512	.detect = vbox_connector_detect,
513	.fill_modes = vbox_fill_modes,
514	.destroy = vbox_connector_destroy,
515	};
516
517	ssize_t vbox_connector_write_sysfs(struct device *dev,
518	struct device_attribute *pAttr,
519	const char *psz, size_t cch)
520	{
521	struct vbox_connector *vbox_connector;
522	struct vbox_private *pVBox;
523
524	LogFunc(("vboxvideo: %d: dev=%p, pAttr=%p, psz=%s, cch=%llu\n", __LINE__,
525	dev, pAttr, psz, (unsigned long long)cch));
526	vbox_connector = container_of(pAttr, struct vbox_connector,
527	deviceAttribute);
528	pVBox = vbox_connector->base.dev->dev_private;
529	drm_kms_helper_hotplug_event(vbox_connector->base.dev);
530	if (pVBox->fbdev)
531	drm_fb_helper_hotplug_event(&pVBox->fbdev->helper);
532	return cch;
533	}
534
535	static int vbox_connector_init(struct drm_device *dev, unsigned cScreen,
536	struct drm_encoder *encoder)
537	{
538	struct vbox_connector *vbox_connector;
539	struct drm_connector *connector;
540	int rc;
541
542	LogFunc(("vboxvideo: %d: dev=%p, encoder=%p\n", __LINE__, dev,
543	encoder));
544	vbox_connector = kzalloc(sizeof(struct vbox_connector), GFP_KERNEL);
545	if (!vbox_connector)
546	return -ENOMEM;
547
548	connector = &vbox_connector->base;
549	vbox_connector->iCrtc = cScreen;
550
551	/*
552	* Set up the sysfs file we use for getting video mode hints from user
553	* space.
554	*/
555	snprintf(vbox_connector->szName, sizeof(vbox_connector->szName),
556	"vbox_screen_%u", cScreen);
557	vbox_connector->deviceAttribute.attr.name = vbox_connector->szName;
558	vbox_connector->deviceAttribute.attr.mode = S_IWUSR;
559	vbox_connector->deviceAttribute.show = NULL;
560	vbox_connector->deviceAttribute.store = vbox_connector_write_sysfs;
561	rc = device_create_file(dev->dev, &vbox_connector->deviceAttribute);
562	if (rc < 0)
563	{
564	kfree(vbox_connector);
565	return rc;
566	}
567	drm_connector_init(dev, connector, &vbox_connector_funcs,
568	DRM_MODE_CONNECTOR_VGA);
569	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
570
571	connector->interlace_allowed = 0;
572	connector->doublescan_allowed = 0;
573
574	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
575	drm_sysfs_connector_add(connector);
576	#else
577	drm_connector_register(connector);
578	#endif
579
580	drm_mode_connector_attach_encoder(connector, encoder);
581
582	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
583	return 0;
584	}
585
586	#if 0
587	/* allocate cursor cache and pin at start of VRAM */
588	int vbox_cursor_init(struct drm_device *dev)
589	{
590	struct vbox_private *vbox = dev->dev_private;
591	int size;
592	int ret;
593	struct drm_gem_object *obj;
594	struct vbox_bo *bo;
595	uint64_t gpu_addr;
596
597	size = (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE) * AST_DEFAULT_HWC_NUM;
598
599	ret = vbox_gem_create(dev, size, true, &obj);
600	if (ret)
601	return ret;
602	bo = gem_to_vbox_bo(obj);
603	ret = vbox_bo_reserve(bo, false);
604	if (unlikely(ret != 0))
605	goto fail;
606
607	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
608	vbox_bo_unreserve(bo);
609	if (ret)
610	goto fail;
611
612	/* kmap the object */
613	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &vbox->cache_kmap);
614	if (ret)
615	goto fail;
616
617	vbox->cursor_cache = obj;
618	vbox->cursor_cache_gpu_addr = gpu_addr;
619	DRM_DEBUG_KMS("pinned cursor cache at %llx\n", vbox->cursor_cache_gpu_addr);
620	return 0;
621	fail:
622	return ret;
623	}
624
625	void vbox_cursor_fini(struct drm_device *dev)
626	{
627	struct vbox_private *vbox = dev->dev_private;
628	ttm_bo_kunmap(&vbox->cache_kmap);
629	drm_gem_object_unreference_unlocked(vbox->cursor_cache);
630	}
631	#endif
632
633	int vbox_mode_init(struct drm_device *dev)
634	{
635	struct vbox_private *pVBox = dev->dev_private;
636	struct drm_encoder *encoder;
637	unsigned i;
638	/* vbox_cursor_init(dev); */
639	LogFunc(("vboxvideo: %d: dev=%p\n", __LINE__, dev));
640	for (i = 0; i < pVBox->cCrtcs; ++i)
641	{
642	vbox_crtc_init(dev, i);
643	encoder = vbox_encoder_init(dev, i);
644	if (encoder)
645	vbox_connector_init(dev, i, encoder);
646	}
647	return 0;
648	}
649
650	void vbox_mode_fini(struct drm_device *dev)
651	{
652	/* vbox_cursor_fini(dev); */
653	}
654
655
656	void VBoxRefreshModes(struct drm_device *dev)
657	{
658	struct vbox_private *vbox = dev->dev_private;
659	struct drm_crtc *crtci;
660	unsigned long flags;
661
662	LogFunc(("vboxvideo: %d\n", __LINE__));
663	spin_lock_irqsave(&vbox->dev_lock, flags);
664	list_for_each_entry(crtci, &dev->mode_config.crtc_list, head)
665	vbox_do_modeset(crtci, &crtci->hwmode);
666	spin_unlock_irqrestore(&vbox->dev_lock, flags);
667	LogFunc(("vboxvideo: %d\n", __LINE__));
668	}
669
670
671	/** Copy the ARGB image and generate the mask, which is needed in case the host
672	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
673	* if the corresponding alpha value in the ARGB image is greater than 0xF0. */
674	static void copy_cursor_image(u8 src, u8 dst, int width, int height,
675	size_t cbMask)
676	{
677	unsigned i, j;
678	size_t cbLine = (width + 7) / 8;
679
680	memcpy(dst + cbMask, src, width * height * 4);
681	for (i = 0; i < height; ++i)
682	for (j = 0; j < width; ++j)
683	if (((uint32_t )src)[i width + j] > 0xf0000000)
684	dst[i * cbLine + j / 8] \|= (0x80 >> (j % 8));
685	}
686
687	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
688	uint32_t handle, uint32_t width, uint32_t height,
689	int32_t hot_x, int32_t hot_y)
690	{
691	struct vbox_private *vbox = crtc->dev->dev_private;
692	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
693	struct drm_gem_object *obj;
694	struct vbox_bo *bo;
695	int ret, rc;
696	struct ttm_bo_kmap_obj uobj_map;
697	u8 *src;
698	u8 *dst = NULL;
699	size_t cbData, cbMask;
700	bool src_isiomem;
701
702	if (!handle) {
703	/* Hide cursor. */
704	VBoxHGSMIUpdatePointerShape(&vbox->Ctx, 0, 0, 0, 0, 0, NULL, 0);
705	return 0;
706	}
707	if ( width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT
708	\|\| width == 0 \|\| hot_x > width \|\| height == 0 \|\| hot_y > height)
709	return -EINVAL;
710
711	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
712	if (obj)
713	{
714	bo = gem_to_vbox_bo(obj);
715	ret = vbox_bo_reserve(bo, false);
716	if (!ret)
717	{
718	/* The mask must be calculated based on the alpha channel, one bit
719	* per ARGB word, and must be 32-bit padded. */
720	cbMask = ((width + 7) / 8 * height + 3) & ~3;
721	cbData = width * height * 4 + cbMask;
722	dst = kmalloc(cbData, GFP_KERNEL);
723	if (dst)
724	{
725	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
726	if (!ret)
727	{
728	src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
729	if (!src_isiomem)
730	{
731	uint32_t fFlags = VBOX_MOUSE_POINTER_VISIBLE
732	\| VBOX_MOUSE_POINTER_SHAPE
733	\| VBOX_MOUSE_POINTER_ALPHA;
734	copy_cursor_image(src, dst, width, height, cbMask);
735	rc = VBoxHGSMIUpdatePointerShape(&vbox->Ctx, fFlags,
736	hot_x, hot_y, width,
737	height, dst, cbData);
738	ret = RTErrConvertToErrno(rc);
739	}
740	else
741	DRM_ERROR("src cursor bo should be in main memory\n");
742	ttm_bo_kunmap(&uobj_map);
743	}
744	kfree(dst);
745	}
746	vbox_bo_unreserve(bo);
747	}
748	drm_gem_object_unreference_unlocked(obj);
749	}
750	else
751	{
752	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
753	ret = -ENOENT;
754	}
755	return ret;
756	}
757
758	static int vbox_cursor_move(struct drm_crtc *crtc,
759	int x, int y)
760	{
761	return 0;
762	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 59552

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