VirtualBox

source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_main.c@ 60904

Last change on this file since 60904 was 60904, checked in by vboxsync, 9 years ago

bugref:8087: Additions/x11: support non-root X server: reduce logging volume.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 17.5 KB
Line 
1/* $Id: vbox_main.c 60904 2016-05-09 18:31:31Z 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.215389.xyz. 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_main.c
20 * with the following copyright and permission notice:
21 *
22 * Copyright 2012 Red Hat Inc.
23 *
24 * Permission is hereby granted, free of charge, to any person obtaining a
25 * copy of this software and associated documentation files (the
26 * "Software"), to deal in the Software without restriction, including
27 * without limitation the rights to use, copy, modify, merge, publish,
28 * distribute, sub license, and/or sell copies of the Software, and to
29 * permit persons to whom the Software is furnished to do so, subject to
30 * the following conditions:
31 *
32 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
33 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
34 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
35 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
36 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
37 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
38 * USE OR OTHER DEALINGS IN THE SOFTWARE.
39 *
40 * The above copyright notice and this permission notice (including the
41 * next paragraph) shall be included in all copies or substantial portions
42 * of the Software.
43 *
44 */
45/*
46 * Authors: Dave Airlie <airlied@redhat.com>
47 */
48#include "vbox_drv.h"
49
50#include <VBox/VBoxVideoGuest.h>
51#include <VBox/VBoxVideo.h>
52
53#include <drm/drm_fb_helper.h>
54#include <drm/drm_crtc_helper.h>
55
56static void vbox_user_framebuffer_destroy(struct drm_framebuffer *fb)
57{
58 struct vbox_framebuffer *vbox_fb = to_vbox_framebuffer(fb);
59 if (vbox_fb->obj)
60 drm_gem_object_unreference_unlocked(vbox_fb->obj);
61
62 LogFunc(("vboxvideo: %d: vbox_fb=%p, vbox_fb->obj=%p\n", __LINE__,
63 vbox_fb, vbox_fb->obj));
64 drm_framebuffer_cleanup(fb);
65 kfree(fb);
66}
67
68void vbox_enable_accel(struct vbox_private *vbox)
69{
70 unsigned i;
71 struct VBVABUFFER *vbva;
72
73 AssertLogRelReturnVoid(vbox->vbva_info != NULL);
74 for (i = 0; i < vbox->num_crtcs; ++i) {
75 if (vbox->vbva_info[i].pVBVA == NULL) {
76 LogFunc(("vboxvideo: enabling VBVA.\n"));
77 vbva = (struct VBVABUFFER *) ( ((uint8_t *)vbox->vram)
78 + vbox->vram_size
79 + i * VBVA_MIN_BUFFER_SIZE);
80 if (!VBoxVBVAEnable(&vbox->vbva_info[i], &vbox->submit_info, vbva, i))
81 AssertReleaseMsgFailed(("VBoxVBVAEnable failed - heap allocation error, very old host or driver error.\n"));
82 }
83 }
84}
85
86void vbox_disable_accel(struct vbox_private *vbox)
87{
88 unsigned i;
89
90 for (i = 0; i < vbox->num_crtcs; ++i)
91 VBoxVBVADisable(&vbox->vbva_info[i], &vbox->submit_info, i);
92}
93
94void vbox_enable_caps(struct vbox_private *vbox)
95{
96 uint32_t caps = VBVACAPS_DISABLE_CURSOR_INTEGRATION
97 | VBVACAPS_IRQ
98 | VBVACAPS_USE_VBVA_ONLY;
99 if (vbox->initial_mode_queried)
100 caps |= VBVACAPS_VIDEO_MODE_HINTS;
101 VBoxHGSMISendCapsInfo(&vbox->submit_info, caps);
102}
103
104/** Send information about dirty rectangles to VBVA. If necessary we enable
105 * VBVA first, as this is normally disabled after a change of master in case
106 * the new master does not send dirty rectangle information (is this even
107 * allowed?) */
108void vbox_framebuffer_dirty_rectangles(struct drm_framebuffer *fb,
109 struct drm_clip_rect *rects,
110 unsigned num_rects)
111{
112 struct vbox_private *vbox = fb->dev->dev_private;
113 unsigned i;
114
115 LogFunc(("vboxvideo: %d: fb=%p, num_rects=%u, vbox=%p\n", __LINE__, fb,
116 num_rects, vbox));
117 vbox_enable_accel(vbox);
118 mutex_lock(&vbox->hw_mutex);
119 for (i = 0; i < num_rects; ++i)
120 {
121 struct drm_crtc *crtc;
122 list_for_each_entry(crtc, &fb->dev->mode_config.crtc_list, head)
123 {
124 unsigned crtc_id = to_vbox_crtc(crtc)->crtc_id;
125 VBVACMDHDR cmd_hdr;
126
127 if ( CRTC_FB(crtc) != fb
128 || rects[i].x1 > crtc->x
129 + crtc->hwmode.hdisplay
130 || rects[i].y1 > crtc->y
131 + crtc->hwmode.vdisplay
132 || rects[i].x2 < crtc->x
133 || rects[i].y2 < crtc->y)
134 continue;
135 cmd_hdr.x = (int16_t)rects[i].x1;
136 cmd_hdr.y = (int16_t)rects[i].y1;
137 cmd_hdr.w = (uint16_t)rects[i].x2 - rects[i].x1;
138 cmd_hdr.h = (uint16_t)rects[i].y2 - rects[i].y1;
139 if (VBoxVBVABufferBeginUpdate(&vbox->vbva_info[crtc_id],
140 &vbox->submit_info))
141 {
142 VBoxVBVAWrite(&vbox->vbva_info[crtc_id], &vbox->submit_info, &cmd_hdr,
143 sizeof(cmd_hdr));
144 VBoxVBVABufferEndUpdate(&vbox->vbva_info[crtc_id]);
145 }
146 }
147 }
148 mutex_unlock(&vbox->hw_mutex);
149 LogFunc(("vboxvideo: %d\n", __LINE__));
150}
151
152static int vbox_user_framebuffer_dirty(struct drm_framebuffer *fb,
153 struct drm_file *file_priv,
154 unsigned flags, unsigned color,
155 struct drm_clip_rect *rects,
156 unsigned num_rects)
157{
158 vbox_framebuffer_dirty_rectangles(fb, rects, num_rects);
159 return 0;
160}
161
162static const struct drm_framebuffer_funcs vbox_fb_funcs = {
163 .destroy = vbox_user_framebuffer_destroy,
164 .dirty = vbox_user_framebuffer_dirty,
165};
166
167
168int vbox_framebuffer_init(struct drm_device *dev,
169 struct vbox_framebuffer *vbox_fb,
170#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)
171 const
172#endif
173 struct DRM_MODE_FB_CMD *mode_cmd,
174 struct drm_gem_object *obj)
175{
176 int ret;
177
178 LogFunc(("vboxvideo: %d: dev=%p, vbox_fb=%p, obj=%p\n", __LINE__, dev,
179 vbox_fb, obj));
180 drm_helper_mode_fill_fb_struct(&vbox_fb->base, mode_cmd);
181 vbox_fb->obj = obj;
182 ret = drm_framebuffer_init(dev, &vbox_fb->base, &vbox_fb_funcs);
183 if (ret) {
184 DRM_ERROR("framebuffer init failed %d\n", ret);
185 LogFunc(("vboxvideo: %d\n", __LINE__));
186 return ret;
187 }
188 LogFunc(("vboxvideo: %d\n", __LINE__));
189 return 0;
190}
191
192static struct drm_framebuffer *
193vbox_user_framebuffer_create(struct drm_device *dev,
194 struct drm_file *filp,
195#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)
196 const
197#endif
198 struct drm_mode_fb_cmd2 *mode_cmd)
199{
200 struct drm_gem_object *obj;
201 struct vbox_framebuffer *vbox_fb;
202 int ret;
203
204 LogFunc(("vboxvideo: %d\n", __LINE__));
205 obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
206 if (obj == NULL)
207 return ERR_PTR(-ENOENT);
208
209 vbox_fb = kzalloc(sizeof(*vbox_fb), GFP_KERNEL);
210 if (!vbox_fb) {
211 drm_gem_object_unreference_unlocked(obj);
212 return ERR_PTR(-ENOMEM);
213 }
214
215 ret = vbox_framebuffer_init(dev, vbox_fb, mode_cmd, obj);
216 if (ret) {
217 drm_gem_object_unreference_unlocked(obj);
218 kfree(vbox_fb);
219 return ERR_PTR(ret);
220 }
221 LogFunc(("vboxvideo: %d\n", __LINE__));
222 return &vbox_fb->base;
223}
224
225static const struct drm_mode_config_funcs vbox_mode_funcs = {
226 .fb_create = vbox_user_framebuffer_create,
227};
228
229static void vbox_accel_fini(struct vbox_private *vbox)
230{
231 if (vbox->vbva_info)
232 {
233 vbox_disable_accel(vbox);
234 kfree(vbox->vbva_info);
235 vbox->vbva_info = NULL;
236 }
237}
238
239static int vbox_accel_init(struct vbox_private *vbox)
240{
241 unsigned i;
242 LogFunc(("vboxvideo: %d: vbox=%p, vbox->num_crtcs=%u, vbox->vbva_info=%p\n",
243 __LINE__, vbox, (unsigned)vbox->num_crtcs, vbox->vbva_info));
244 if (!vbox->vbva_info)
245 {
246 vbox->vbva_info = kzalloc( sizeof(struct VBVABUFFERCONTEXT)
247 * vbox->num_crtcs,
248 GFP_KERNEL);
249 if (!vbox->vbva_info)
250 return -ENOMEM;
251 }
252 /* Take a command buffer for each screen from the end of usable VRAM. */
253 vbox->vram_size -= vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE;
254 for (i = 0; i < vbox->num_crtcs; ++i)
255 VBoxVBVASetupBufferContext(&vbox->vbva_info[i],
256 vbox->vram_size + i * VBVA_MIN_BUFFER_SIZE,
257 VBVA_MIN_BUFFER_SIZE);
258 LogFunc(("vboxvideo: %d: vbox->vbva_info=%p, vbox->vram_size=%u\n",
259 __LINE__, vbox->vbva_info, (unsigned)vbox->vram_size));
260 return 0;
261}
262
263/** Allocation function for the HGSMI heap and data. */
264static DECLCALLBACK(void *) alloc_hgsmi_environ(void *environ, HGSMISIZE size)
265{
266 NOREF(environ);
267 return kmalloc(size, GFP_KERNEL);
268}
269
270
271/** Free function for the HGSMI heap and data. */
272static DECLCALLBACK(void) free_hgsmi_environ(void *environ, void *ptr)
273{
274 NOREF(environ);
275 kfree(ptr);
276}
277
278
279/** Pointers to the HGSMI heap and data manipulation functions. */
280static HGSMIENV hgsmi_environ =
281{
282 NULL,
283 alloc_hgsmi_environ,
284 free_hgsmi_environ
285};
286
287
288/** Do we support the 4.3 plus mode hint reporting interface? */
289static bool have_hgsmi_mode_hints(struct vbox_private *vbox)
290{
291 uint32_t have_hints, have_cursor;
292
293 return RT_SUCCESS(VBoxQueryConfHGSMI(&vbox->submit_info, VBOX_VBVA_CONF32_MODE_HINT_REPORTING, &have_hints))
294 && RT_SUCCESS(VBoxQueryConfHGSMI(&vbox->submit_info, VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING, &have_cursor))
295 && have_hints == VINF_SUCCESS
296 && have_cursor == VINF_SUCCESS;
297}
298
299
300/** Set up our heaps and data exchange buffers in VRAM before handing the rest
301 * to the memory manager. */
302static int vbox_hw_init(struct vbox_private *vbox)
303{
304 uint32_t base_offset, guest_heap_offset, guest_heap_size, host_flags_offset;
305 void *guest_heap;
306
307 vbox->full_vram_size = VBoxVideoGetVRAMSize();
308 vbox->any_pitch = VBoxVideoAnyWidthAllowed();
309 DRM_INFO("VRAM %08x\n", vbox->full_vram_size);
310 VBoxHGSMIGetBaseMappingInfo(vbox->full_vram_size, &base_offset, NULL,
311 &guest_heap_offset, &guest_heap_size, &host_flags_offset);
312 guest_heap = ((uint8_t *)vbox->vram) + base_offset + guest_heap_offset;
313 vbox->host_flags_offset = base_offset + host_flags_offset;
314 if (RT_FAILURE(VBoxHGSMISetupGuestContext(&vbox->submit_info, guest_heap,
315 guest_heap_size,
316 base_offset + guest_heap_offset,
317 &hgsmi_environ)))
318 return -ENOMEM;
319 /* Reduce available VRAM size to reflect the guest heap. */
320 vbox->vram_size = base_offset;
321 /* Linux drm represents monitors as a 32-bit array. */
322 vbox->num_crtcs = RT_MIN(VBoxHGSMIGetMonitorCount(&vbox->submit_info), 32);
323 if (!have_hgsmi_mode_hints(vbox))
324 return -ENOTSUPP;
325 vbox->last_mode_hints = kzalloc(sizeof(VBVAMODEHINT) * vbox->num_crtcs, GFP_KERNEL);
326 if (!vbox->last_mode_hints)
327 return -ENOMEM;
328 return vbox_accel_init(vbox);
329}
330
331static void vbox_hw_fini(struct vbox_private *vbox)
332{
333 vbox_accel_fini(vbox);
334 if (vbox->last_mode_hints)
335 kfree(vbox->last_mode_hints);
336 vbox->last_mode_hints = NULL;
337}
338
339int vbox_driver_load(struct drm_device *dev, unsigned long flags)
340{
341 struct vbox_private *vbox;
342 int ret = 0;
343
344 LogFunc(("vboxvideo: %d: dev=%p\n", __LINE__, dev));
345 if (!VBoxHGSMIIsSupported())
346 return -ENODEV;
347 vbox = kzalloc(sizeof(struct vbox_private), GFP_KERNEL);
348 if (!vbox)
349 return -ENOMEM;
350
351 dev->dev_private = vbox;
352 vbox->dev = dev;
353
354 mutex_init(&vbox->hw_mutex);
355 /* I hope this won't interfere with the memory manager. */
356 vbox->vram = pci_iomap(dev->pdev, 0, 0);
357 if (!vbox->vram) {
358 ret = -EIO;
359 goto out_free;
360 }
361
362 ret = vbox_hw_init(vbox);
363 if (ret)
364 goto out_free;
365
366 ret = vbox_mm_init(vbox);
367 if (ret)
368 goto out_free;
369
370 drm_mode_config_init(dev);
371
372 dev->mode_config.funcs = (void *)&vbox_mode_funcs;
373 dev->mode_config.min_width = 64;
374 dev->mode_config.min_height = 64;
375 dev->mode_config.preferred_depth = 24;
376 dev->mode_config.max_width = VBE_DISPI_MAX_XRES;
377 dev->mode_config.max_height = VBE_DISPI_MAX_YRES;
378
379 ret = vbox_mode_init(dev);
380 if (ret)
381 goto out_free;
382
383 ret = vbox_irq_init(vbox);
384 if (ret)
385 goto out_free;
386
387 ret = vbox_fbdev_init(dev);
388 if (ret)
389 goto out_free;
390 LogFunc(("vboxvideo: %d: vbox=%p, vbox->vram=%p, vbox->full_vram_size=%u\n",
391 __LINE__, vbox, vbox->vram, (unsigned)vbox->full_vram_size));
392 return 0;
393out_free:
394 vbox_driver_unload(dev);
395 LogFunc(("vboxvideo: %d: ret=%d\n", __LINE__, ret));
396 return ret;
397}
398
399int vbox_driver_unload(struct drm_device *dev)
400{
401 struct vbox_private *vbox = dev->dev_private;
402
403 LogFunc(("vboxvideo: %d\n", __LINE__));
404 vbox_fbdev_fini(dev);
405 vbox_irq_fini(vbox);
406 vbox_mode_fini(dev);
407 if (dev->mode_config.funcs)
408 drm_mode_config_cleanup(dev);
409
410 vbox_hw_fini(vbox);
411 vbox_mm_fini(vbox);
412 if (vbox->vram)
413 pci_iounmap(dev->pdev, vbox->vram);
414 kfree(vbox);
415 dev->dev_private = NULL;
416 LogFunc(("vboxvideo: %d\n", __LINE__));
417 return 0;
418}
419
420/** @note this is described in the DRM framework documentation. AST does not
421 * have it, but we get an oops on driver unload if it is not present. */
422void vbox_driver_lastclose(struct drm_device *dev)
423{
424 struct vbox_private *vbox = dev->dev_private;
425
426#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 16, 0)
427 if (vbox->fbdev)
428 drm_fb_helper_restore_fbdev_mode_unlocked(&vbox->fbdev->helper);
429#else
430 mutex_lock(&dev->mode_config.mutex);
431 if (vbox->fbdev)
432 drm_fb_helper_restore_fbdev_mode(&vbox->fbdev->helper);
433 mutex_unlock(&dev->mode_config.mutex);
434#endif
435}
436
437int vbox_gem_create(struct drm_device *dev,
438 u32 size, bool iskernel,
439 struct drm_gem_object **obj)
440{
441 struct vbox_bo *vboxbo;
442 int ret;
443
444 LogFunc(("vboxvideo: %d: dev=%p, size=%u, iskernel=%u\n", __LINE__,
445 dev, (unsigned)size, (unsigned)iskernel));
446 *obj = NULL;
447
448 size = roundup(size, PAGE_SIZE);
449 if (size == 0)
450 return -EINVAL;
451
452 ret = vbox_bo_create(dev, size, 0, 0, &vboxbo);
453 if (ret) {
454 if (ret != -ERESTARTSYS)
455 DRM_ERROR("failed to allocate GEM object\n");
456 return ret;
457 }
458 *obj = &vboxbo->gem;
459 LogFunc(("vboxvideo: %d: obj=%p\n", __LINE__, obj));
460 return 0;
461}
462
463int vbox_dumb_create(struct drm_file *file,
464 struct drm_device *dev,
465 struct drm_mode_create_dumb *args)
466{
467 int ret;
468 struct drm_gem_object *gobj;
469 u32 handle;
470
471 LogFunc(("vboxvideo: %d: args->width=%u, args->height=%u, args->bpp=%u\n",
472 __LINE__, (unsigned)args->width, (unsigned)args->height,
473 (unsigned)args->bpp));
474 args->pitch = args->width * ((args->bpp + 7) / 8);
475 args->size = args->pitch * args->height;
476
477 ret = vbox_gem_create(dev, args->size, false,
478 &gobj);
479 if (ret)
480 return ret;
481
482 ret = drm_gem_handle_create(file, gobj, &handle);
483 drm_gem_object_unreference_unlocked(gobj);
484 if (ret)
485 return ret;
486
487 args->handle = handle;
488 LogFunc(("vboxvideo: %d: args->handle=%u\n", __LINE__,
489 (unsigned)args->handle));
490 return 0;
491}
492
493#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0)
494int vbox_dumb_destroy(struct drm_file *file,
495 struct drm_device *dev,
496 uint32_t handle)
497{
498 LogFunc(("vboxvideo: %d: dev=%p, handle=%u\n", __LINE__, dev,
499 (unsigned)handle));
500 return drm_gem_handle_delete(file, handle);
501}
502#endif
503
504static void vbox_bo_unref(struct vbox_bo **bo)
505{
506 struct ttm_buffer_object *tbo;
507
508 if ((*bo) == NULL)
509 return;
510
511 LogFunc(("vboxvideo: %d: bo=%p\n", __LINE__, bo));
512 tbo = &((*bo)->bo);
513 ttm_bo_unref(&tbo);
514 if (tbo == NULL)
515 *bo = NULL;
516
517}
518void vbox_gem_free_object(struct drm_gem_object *obj)
519{
520 struct vbox_bo *vbox_bo = gem_to_vbox_bo(obj);
521
522 LogFunc(("vboxvideo: %d: vbox_bo=%p\n", __LINE__, vbox_bo));
523 vbox_bo_unref(&vbox_bo);
524}
525
526
527static inline u64 vbox_bo_mmap_offset(struct vbox_bo *bo)
528{
529#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0)
530 return bo->bo.addr_space_offset;
531#else
532 return drm_vma_node_offset_addr(&bo->bo.vma_node);
533#endif
534}
535int
536vbox_dumb_mmap_offset(struct drm_file *file,
537 struct drm_device *dev,
538 uint32_t handle,
539 uint64_t *offset)
540{
541 struct drm_gem_object *obj;
542 int ret;
543 struct vbox_bo *bo;
544
545 LogFunc(("vboxvideo: %d: dev=%p, handle=%u\n", __LINE__,
546 dev, (unsigned)handle));
547 mutex_lock(&dev->struct_mutex);
548 obj = drm_gem_object_lookup(dev, file, handle);
549 if (obj == NULL) {
550 ret = -ENOENT;
551 goto out_unlock;
552 }
553
554 bo = gem_to_vbox_bo(obj);
555 *offset = vbox_bo_mmap_offset(bo);
556
557 drm_gem_object_unreference(obj);
558 ret = 0;
559 LogFunc(("vboxvideo: %d: bo=%p, *offset=%llu\n", __LINE__,
560 bo, (unsigned long long)*offset));
561out_unlock:
562 mutex_unlock(&dev->struct_mutex);
563 return ret;
564
565}
Note: See TracBrowser for help on using the repository browser.

© 2025 Oracle Support Privacy / Do Not Sell My Info Terms of Use Trademark Policy Automated Access Etiquette