vbox_mode.c@ 53793

Last change on this file since 53793 was 53793, checked in by vboxsync, 10 years ago
Additions/linux/drm: forgotten to export some files.
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File size: 22.7 KB

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1	/** @file $Id: vbox_mode.c 53793 2015-01-13 20:06:32Z vboxsync $
2	*
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-vbox
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
57	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
58	uint32_t handle, uint32_t width, uint32_t height,
59	int32_t hot_x, int32_t hot_y);
60	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
61
62	/** Set a graphics mode. Poke any required values into registers, do an HGSMI
63	* mode set and tell the host we support advanced graphics functions.
64	*/
65	static void vbox_do_modeset(struct drm_crtc *crtc,
66	const struct drm_display_mode *mode)
67	{
68	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
69	struct vbox_private *vbox;
70	int width, height, cBPP, pitch;
71	unsigned iCrtc;
72	uint16_t fFlags;
73
74	LogFunc(("vboxvideo: %d: vbox_crtc=%p, CRTC_FB(crtc)=%p\n", __LINE__,
75	vbox_crtc, CRTC_FB(crtc)));
76	vbox = crtc->dev->dev_private;
77	width = mode->hdisplay ? mode->hdisplay : 640;
78	height = mode->vdisplay ? mode->vdisplay : 480;
79	iCrtc = vbox_crtc->crtc_id;
80	cBPP = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
81	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0)
82	pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * cBPP / 8;
83	#else
84	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * cBPP / 8;
85	#endif
86	/* if (vbox_crtc->crtc_id == 0 && crtc->enabled)
87	VBoxVideoSetModeRegisters(width, height, pitch * 8 / cBPP,
88	CRTC_FB(crtc)->bits_per_pixel, 0,
89	crtc->x, crtc->y); */
90	fFlags = VBVA_SCREEN_F_ACTIVE;
91	fFlags \|= (crtc->enabled ? 0 : VBVA_SCREEN_F_DISABLED);
92	VBoxHGSMIProcessDisplayInfo(&vbox->Ctx, vbox_crtc->crtc_id,
93	crtc->x, crtc->y,
94	crtc->x * cBPP / 8 + crtc->y * pitch,
95	pitch, width, height,
96	vbox_crtc->fBlanked ? 0 : cBPP, fFlags);
97	LogFunc(("vboxvideo: %d\n", __LINE__));
98	}
99
100	static int vbox_set_view(struct drm_crtc *crtc)
101	{
102	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
103	struct vbox_private *vbox = crtc->dev->dev_private;
104	void *p;
105
106	LogFunc(("vboxvideo: %d: vbox_crtc=%p\n", __LINE__, vbox_crtc));
107	/* Tell the host about the view. This design originally targeted the
108	* Windows XP driver architecture and assumed that each screen would have
109	* a dedicated frame buffer with the command buffer following it, the whole
110	* being a "view". The host works out which screen a command buffer belongs
111	* to by checking whether it is in the first view, then whether it is in the
112	* second and so on. The first match wins. We cheat around this by making
113	* the first view be the managed memory plus the first command buffer, the
114	* second the same plus the second buffer and so on. */
115	p = VBoxHGSMIBufferAlloc(&vbox->Ctx, sizeof(VBVAINFOVIEW), HGSMI_CH_VBVA,
116	VBVA_INFO_VIEW);
117	if (p)
118	{
119	VBVAINFOVIEW pInfo = (VBVAINFOVIEW )p;
120	pInfo->u32ViewIndex = vbox_crtc->crtc_id;
121	pInfo->u32ViewOffset = vbox_crtc->offFB;
122	pInfo->u32ViewSize = vbox->vram_size - vbox_crtc->offFB
123	+ vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
124	pInfo->u32MaxScreenSize = vbox->vram_size - vbox_crtc->offFB;
125	VBoxHGSMIBufferSubmit(&vbox->Ctx, p);
126	VBoxHGSMIBufferFree(&vbox->Ctx, p);
127	}
128	else
129	return -ENOMEM;
130	LogFunc(("vboxvideo: %d: p=%p\n", __LINE__, p));
131	return 0;
132	}
133
134	static void vbox_crtc_load_lut(struct drm_crtc *crtc)
135	{
136
137	}
138
139	static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
140	{
141	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
142	struct vbox_private *vbox = crtc->dev->dev_private;
143	unsigned long flags;
144
145	LogFunc(("vboxvideo: %d: vbox_crtc=%p, mode=%d\n", __LINE__, vbox_crtc,
146	mode));
147	switch (mode)
148	{
149	case DRM_MODE_DPMS_ON:
150	vbox_crtc->fBlanked = false;
151	break;
152	case DRM_MODE_DPMS_STANDBY:
153	case DRM_MODE_DPMS_SUSPEND:
154	case DRM_MODE_DPMS_OFF:
155	vbox_crtc->fBlanked = true;
156	break;
157	}
158	spin_lock_irqsave(&vbox->dev_lock, flags);
159	vbox_do_modeset(crtc, &crtc->hwmode);
160	spin_unlock_irqrestore(&vbox->dev_lock, flags);
161	LogFunc(("vboxvideo: %d\n", __LINE__));
162	}
163
164	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
165	const struct drm_display_mode *mode,
166	struct drm_display_mode *adjusted_mode)
167	{
168	return true;
169	}
170
171	static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
172	struct drm_framebuffer *fb,
173	int x, int y, int atomic)
174	{
175	struct vbox_private *vbox = crtc->dev->dev_private;
176	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
177	struct drm_gem_object *obj;
178	struct vbox_framebuffer *vbox_fb;
179	struct vbox_bo *bo;
180	int ret;
181	u64 gpu_addr;
182
183	LogFunc(("vboxvideo: %d: fb=%p, vbox_crtc=%p\n", __LINE__, fb, vbox_crtc));
184
185	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
186	obj = vbox_fb->obj;
187	bo = gem_to_vbox_bo(obj);
188
189	ret = vbox_bo_reserve(bo, false);
190	if (ret)
191	return ret;
192
193	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
194	if (ret)
195	{
196	vbox_bo_unreserve(bo);
197	return ret;
198	}
199
200	if (&vbox->fbdev->afb == vbox_fb)
201	{
202	/* if pushing console in kmap it */
203	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
204	if (ret)
205	DRM_ERROR("failed to kmap fbcon\n");
206	}
207	vbox_bo_unreserve(bo);
208
209	/* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
210	vbox_crtc->offFB = gpu_addr;
211
212	LogFunc(("vboxvideo: %d: vbox_fb=%p, obj=%p, bo=%p, gpu_addr=%u\n",
213	__LINE__, vbox_fb, obj, bo, (unsigned)gpu_addr));
214	return 0;
215	}
216
217	static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
218	struct drm_framebuffer *old_fb)
219	{
220	LogFunc(("vboxvideo: %d\n", __LINE__));
221	return vbox_crtc_do_set_base(crtc, old_fb, x, y, 0);
222	}
223
224	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
225	struct drm_display_mode *mode,
226	struct drm_display_mode *adjusted_mode,
227	int x, int y,
228	struct drm_framebuffer *old_fb)
229	{
230	struct vbox_private *vbox = crtc->dev->dev_private;
231	unsigned long flags;
232	int rc = 0;
233
234	LogFunc(("vboxvideo: %d: vbox=%p\n", __LINE__, vbox));
235	vbox_crtc_mode_set_base(crtc, x, y, old_fb);
236	spin_lock_irqsave(&vbox->dev_lock, flags);
237	rc = vbox_set_view(crtc);
238	if (!rc)
239	vbox_do_modeset(crtc, mode);
240	spin_unlock_irqrestore(&vbox->dev_lock, flags);
241	LogFunc(("vboxvideo: %d\n", __LINE__));
242	return rc;
243	}
244
245	static void vbox_crtc_disable(struct drm_crtc *crtc)
246	{
247
248	}
249
250	static void vbox_crtc_prepare(struct drm_crtc *crtc)
251	{
252
253	}
254
255	static void vbox_crtc_commit(struct drm_crtc *crtc)
256	{
257
258	}
259
260
261	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs =
262	{
263	.dpms = vbox_crtc_dpms,
264	.mode_fixup = vbox_crtc_mode_fixup,
265	.mode_set = vbox_crtc_mode_set,
266	/* .mode_set_base = vbox_crtc_mode_set_base, */
267	.disable = vbox_crtc_disable,
268	.load_lut = vbox_crtc_load_lut,
269	.prepare = vbox_crtc_prepare,
270	.commit = vbox_crtc_commit,
271
272	};
273
274	static void vbox_crtc_reset(struct drm_crtc *crtc)
275	{
276
277	}
278
279
280	static void vbox_crtc_destroy(struct drm_crtc *crtc)
281	{
282	drm_crtc_cleanup(crtc);
283	kfree(crtc);
284	}
285
286	static const struct drm_crtc_funcs vbox_crtc_funcs =
287	{
288	.cursor_move = vbox_cursor_move,
289	#ifdef DRM_IOCTL_MODE_CURSOR2
290	.cursor_set2 = vbox_cursor_set2,
291	#endif
292	.reset = vbox_crtc_reset,
293	.set_config = drm_crtc_helper_set_config,
294	/* .gamma_set = vbox_crtc_gamma_set, */
295	.destroy = vbox_crtc_destroy,
296	};
297
298	int vbox_crtc_init(struct drm_device *pDev, unsigned i)
299	{
300	struct vbox_crtc *pCrtc;
301
302	LogFunc(("vboxvideo: %d\n", __LINE__));
303	pCrtc = kzalloc(sizeof(struct vbox_crtc), GFP_KERNEL);
304	if (!pCrtc)
305	return -ENOMEM;
306	pCrtc->crtc_id = i;
307
308	drm_crtc_init(pDev, &pCrtc->base, &vbox_crtc_funcs);
309	drm_mode_crtc_set_gamma_size(&pCrtc->base, 256);
310	drm_crtc_helper_add(&pCrtc->base, &vbox_crtc_helper_funcs);
311	LogFunc(("vboxvideo: %d: pCrtc=%p\n", __LINE__, pCrtc));
312
313	return 0;
314	}
315
316
317	static void vbox_encoder_destroy(struct drm_encoder *encoder)
318	{
319	LogFunc(("vboxvideo: %d: encoder=%p\n", __LINE__, encoder));
320	drm_encoder_cleanup(encoder);
321	kfree(encoder);
322	}
323
324
325	static struct drm_encoder vbox_best_single_encoder(struct drm_connector connector)
326	{
327	int enc_id = connector->encoder_ids[0];
328	struct drm_mode_object *obj;
329	struct drm_encoder *encoder;
330
331	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
332	/* pick the encoder ids */
333	if (enc_id)
334	{
335	obj = drm_mode_object_find(connector->dev, enc_id, DRM_MODE_OBJECT_ENCODER);
336	if (!obj)
337	return NULL;
338	encoder = obj_to_encoder(obj);
339	LogFunc(("vboxvideo: %d: encoder=%p\n", __LINE__, encoder));
340	return encoder;
341	}
342	LogFunc(("vboxvideo: %d\n", __LINE__));
343	return NULL;
344	}
345
346
347	static const struct drm_encoder_funcs vbox_enc_funcs =
348	{
349	.destroy = vbox_encoder_destroy,
350	};
351
352	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
353	{
354
355	}
356
357	static bool vbox_mode_fixup(struct drm_encoder *encoder,
358	const struct drm_display_mode *mode,
359	struct drm_display_mode *adjusted_mode)
360	{
361	return true;
362	}
363
364	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
365	struct drm_display_mode *mode,
366	struct drm_display_mode *adjusted_mode)
367	{
368	}
369
370	static void vbox_encoder_prepare(struct drm_encoder *encoder)
371	{
372
373	}
374
375	static void vbox_encoder_commit(struct drm_encoder *encoder)
376	{
377
378	}
379
380
381	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs =
382	{
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	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 int vbox_get_modes(struct drm_connector *pConnector)
409	{
410	struct vbox_connector *pVBoxConnector = NULL;
411	struct drm_display_mode *pMode = NULL;
412	unsigned cModes = 0;
413
414	LogFunc(("vboxvideo: %d: pConnector=%p\n", __LINE__, pConnector));
415	pVBoxConnector = to_vbox_connector(pConnector);
416	cModes = drm_add_modes_noedid(pConnector, 1024, 768);
417	if (pVBoxConnector->modeHint.cX && pVBoxConnector->modeHint.cY)
418	{
419	pMode = drm_cvt_mode(pConnector->dev, pVBoxConnector->modeHint.cX,
420	pVBoxConnector->modeHint.cY, 60, false, false,
421	false);
422	if (pMode)
423	{
424	pMode->type \|= DRM_MODE_TYPE_PREFERRED;
425	drm_mode_probed_add(pConnector, pMode);
426	++cModes;
427	}
428	}
429	return cModes;
430	}
431
432	static int vbox_mode_valid(struct drm_connector *connector,
433	struct drm_display_mode *mode)
434	{
435	return MODE_OK;
436	}
437
438	static void vbox_connector_destroy(struct drm_connector *pConnector)
439	{
440	struct vbox_connector *pVBoxConnector = NULL;
441
442	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, pConnector));
443	pVBoxConnector = to_vbox_connector(pConnector);
444	device_remove_file(pConnector->dev->dev, &pVBoxConnector->deviceAttribute);
445	drm_sysfs_connector_remove(pConnector);
446	drm_connector_cleanup(pConnector);
447	kfree(pConnector);
448	}
449
450	static enum drm_connector_status
451	vbox_connector_detect(struct drm_connector *connector, bool force)
452	{
453	return connector_status_connected;
454	}
455
456	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs =
457	{
458	.mode_valid = vbox_mode_valid,
459	.get_modes = vbox_get_modes,
460	.best_encoder = vbox_best_single_encoder,
461	};
462
463	static const struct drm_connector_funcs vbox_connector_funcs =
464	{
465	.dpms = drm_helper_connector_dpms,
466	.detect = vbox_connector_detect,
467	.fill_modes = drm_helper_probe_single_connector_modes,
468	.destroy = vbox_connector_destroy,
469	};
470
471	ssize_t vbox_connector_write_sysfs(struct device *pDev,
472	struct device_attribute *pAttr,
473	const char *psz, size_t cch)
474	{
475	struct vbox_connector *pVBoxConnector;
476	struct drm_device *pDrmDev;
477	struct vbox_private *pVBox;
478	int cX, cY;
479	char ch;
480
481	LogFunc(("vboxvideo: %d: pDev=%p, pAttr=%p, psz=%s, cch=%llu\n", __LINE__,
482	pDev, pAttr, psz, (unsigned long long)cch));
483	pVBoxConnector = container_of(pAttr, struct vbox_connector,
484	deviceAttribute);
485	pDrmDev = pVBoxConnector->base.dev;
486	pVBox = pDrmDev->dev_private;
487	if (sscanf(psz, "%dx%d\n%c", &cX, &cY, &ch) != 2)
488	return -EINVAL;
489	if ( cX < 64 \|\| cX > VBE_DISPI_MAX_XRES
490	\|\| cY < 64 \|\| cY > VBE_DISPI_MAX_YRES)
491	return -EINVAL;
492	pVBoxConnector->modeHint.cX = (uint16_t)cX;
493	pVBoxConnector->modeHint.cY = (uint16_t)cY;
494	drm_helper_hpd_irq_event(pVBoxConnector->base.dev);
495	if (pVBox->fbdev)
496	drm_fb_helper_hotplug_event(&pVBox->fbdev->helper);
497	LogFunc(("vboxvideo: %d\n", __LINE__));
498	return cch;
499	}
500
501	int vbox_connector_init(struct drm_device *pDev, unsigned cScreen,
502	struct drm_encoder *pEncoder)
503	{
504	struct vbox_connector *pVBoxConnector;
505	struct drm_connector *pConnector;
506	int rc;
507
508	LogFunc(("vboxvideo: %d: pDev=%p, pEncoder=%p\n", __LINE__, pDev,
509	pEncoder));
510	pVBoxConnector = kzalloc(sizeof(struct vbox_connector), GFP_KERNEL);
511	if (!pVBoxConnector)
512	return -ENOMEM;
513
514	pConnector = &pVBoxConnector->base;
515
516	/*
517	* Set up the sysfs file we use for getting video mode hints from user
518	* space.
519	*/
520	snprintf(pVBoxConnector->szName, sizeof(pVBoxConnector->szName),
521	"vbox_screen_%u", cScreen);
522	pVBoxConnector->deviceAttribute.attr.name = pVBoxConnector->szName;
523	pVBoxConnector->deviceAttribute.attr.mode = S_IWUSR;
524	pVBoxConnector->deviceAttribute.show = NULL;
525	pVBoxConnector->deviceAttribute.store = vbox_connector_write_sysfs;
526	rc = device_create_file(pDev->dev, &pVBoxConnector->deviceAttribute);
527	if (rc < 0)
528	{
529	kfree(pVBoxConnector);
530	return rc;
531	}
532	drm_connector_init(pDev, pConnector, &vbox_connector_funcs,
533	DRM_MODE_CONNECTOR_VGA);
534	drm_connector_helper_add(pConnector, &vbox_connector_helper_funcs);
535
536	pConnector->interlace_allowed = 0;
537	pConnector->doublescan_allowed = 0;
538
539	drm_sysfs_connector_add(pConnector);
540
541	/* The connector supports hot-plug detection: we promise to call
542	* "drm_helper_hpd_irq_event" when hot-plugging occurs. */
543	pConnector->polled = DRM_CONNECTOR_POLL_HPD;
544
545	drm_mode_connector_attach_encoder(pConnector, pEncoder);
546
547	LogFunc(("vboxvideo: %d: pConnector=%p\n", __LINE__, pConnector));
548	return 0;
549	}
550
551	#if 0
552	/* allocate cursor cache and pin at start of VRAM */
553	int vbox_cursor_init(struct drm_device *dev)
554	{
555	struct vbox_private *vbox = dev->dev_private;
556	int size;
557	int ret;
558	struct drm_gem_object *obj;
559	struct vbox_bo *bo;
560	uint64_t gpu_addr;
561
562	size = (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE) * AST_DEFAULT_HWC_NUM;
563
564	ret = vbox_gem_create(dev, size, true, &obj);
565	if (ret)
566	return ret;
567	bo = gem_to_vbox_bo(obj);
568	ret = vbox_bo_reserve(bo, false);
569	if (unlikely(ret != 0))
570	goto fail;
571
572	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
573	vbox_bo_unreserve(bo);
574	if (ret)
575	goto fail;
576
577	/* kmap the object */
578	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &vbox->cache_kmap);
579	if (ret)
580	goto fail;
581
582	vbox->cursor_cache = obj;
583	vbox->cursor_cache_gpu_addr = gpu_addr;
584	DRM_DEBUG_KMS("pinned cursor cache at %llx\n", vbox->cursor_cache_gpu_addr);
585	return 0;
586	fail:
587	return ret;
588	}
589
590	void vbox_cursor_fini(struct drm_device *dev)
591	{
592	struct vbox_private *vbox = dev->dev_private;
593	ttm_bo_kunmap(&vbox->cache_kmap);
594	drm_gem_object_unreference_unlocked(vbox->cursor_cache);
595	}
596	#endif
597
598	int vbox_mode_init(struct drm_device *pDev)
599	{
600	struct vbox_private *pVBox = pDev->dev_private;
601	struct drm_encoder *pEncoder;
602	unsigned i;
603	/* vbox_cursor_init(dev); */
604	LogFunc(("vboxvideo: %d: pDev=%p\n", __LINE__, pDev));
605	for (i = 0; i < pVBox->cCrtcs; ++i)
606	{
607	vbox_crtc_init(pDev, i);
608	pEncoder = vbox_encoder_init(pDev, i);
609	if (pEncoder)
610	vbox_connector_init(pDev, i, pEncoder);
611	}
612	return 0;
613	}
614
615	void vbox_mode_fini(struct drm_device *dev)
616	{
617	/* vbox_cursor_fini(dev); */
618	}
619
620
621	void VBoxRefreshModes(struct drm_device *pDev)
622	{
623	struct vbox_private *vbox = pDev->dev_private;
624	struct drm_crtc *crtci;
625	unsigned long flags;
626
627	LogFunc(("vboxvideo: %d\n", __LINE__));
628	spin_lock_irqsave(&vbox->dev_lock, flags);
629	list_for_each_entry(crtci, &pDev->mode_config.crtc_list, head)
630	vbox_do_modeset(crtci, &crtci->hwmode);
631	spin_unlock_irqrestore(&vbox->dev_lock, flags);
632	LogFunc(("vboxvideo: %d\n", __LINE__));
633	}
634
635
636	/** Copy the ARGB image and generate the mask, which is needed in case the host
637	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
638	* if the corresponding alpha value in the ARGB image is greater than 0xF0. */
639	static void copy_cursor_image(u8 src, u8 dst, int width, int height,
640	size_t cbMask)
641	{
642	unsigned i, j;
643	size_t cbLine = (width + 7) / 8;
644
645	memcpy(dst + cbMask, src, width * height * 4);
646	for (i = 0; i < height; ++i)
647	for (j = 0; j < width; ++j)
648	if (((uint32_t )src)[i width + j] > 0xf0000000)
649	dst[i * cbLine + j / 8] \|= (0x80 >> (j % 8));
650	}
651
652	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
653	uint32_t handle, uint32_t width, uint32_t height,
654	int32_t hot_x, int32_t hot_y)
655	{
656	struct vbox_private *vbox = crtc->dev->dev_private;
657	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
658	struct drm_gem_object *obj;
659	struct vbox_bo *bo;
660	int ret, rc;
661	struct ttm_bo_kmap_obj uobj_map;
662	u8 *src;
663	u8 *dst = NULL;
664	size_t cbData, cbMask;
665	bool src_isiomem;
666
667	if (!handle) {
668	/* Hide cursor. */
669	VBoxHGSMIUpdatePointerShape(&vbox->Ctx, 0, 0, 0, 0, 0, NULL, 0);
670	return 0;
671	}
672	if ( width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT
673	\|\| width == 0 \|\| hot_x > width \|\| height == 0 \|\| hot_y > height)
674	return -EINVAL;
675
676	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
677	if (obj)
678	{
679	bo = gem_to_vbox_bo(obj);
680	ret = vbox_bo_reserve(bo, false);
681	if (!ret)
682	{
683	/* The mask must be calculated based on the alpha channel, one bit
684	* per ARGB word, and must be 32-bit padded. */
685	cbMask = ((width + 7) / 8 * height + 3) & ~3;
686	cbData = width * height * 4 + cbMask;
687	dst = kmalloc(cbData, GFP_KERNEL);
688	if (dst)
689	{
690	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
691	if (!ret)
692	{
693	src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
694	if (!src_isiomem)
695	{
696	uint32_t fFlags = VBOX_MOUSE_POINTER_VISIBLE
697	\| VBOX_MOUSE_POINTER_SHAPE
698	\| VBOX_MOUSE_POINTER_ALPHA;
699	copy_cursor_image(src, dst, width, height, cbMask);
700	rc = VBoxHGSMIUpdatePointerShape(&vbox->Ctx, fFlags,
701	hot_x, hot_y, width,
702	height, dst, cbData);
703	ret = RTErrConvertToErrno(rc);
704	}
705	else
706	DRM_ERROR("src cursor bo should be in main memory\n");
707	ttm_bo_kunmap(&uobj_map);
708	}
709	kfree(dst);
710	}
711	vbox_bo_unreserve(bo);
712	}
713	drm_gem_object_unreference_unlocked(obj);
714	}
715	else
716	{
717	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
718	ret = -ENOENT;
719	}
720	return ret;
721	}
722
723	static int vbox_cursor_move(struct drm_crtc *crtc,
724	int x, int y)
725	{
726	return 0;
727	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 53793

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