VirtualBox

source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_main.c@ 59794

Last change on this file since 59794 was 59697, checked in by vboxsync, 9 years ago

bugref:8087: Additions/x11: support non-root X server: do some clean-up of the driver and the device initialisation and shut-down code.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 17.3 KB
Line 
1/* $Id: vbox_main.c 59697 2016-02-16 10:32:31Z 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.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_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 <[email protected]>
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 VBoxHGSMISendCapsInfo(&vbox->submit_info, VBVACAPS_VIDEO_MODE_HINTS | VBVACAPS_DISABLE_CURSOR_INTEGRATION | VBVACAPS_IRQ);
97}
98
99void vbox_disable_caps(struct vbox_private *vbox)
100{
101 VBoxHGSMISendCapsInfo(&vbox->submit_info, 0);
102}
103
104/** Send information about dirty rectangles to VBVA. If necessary we enable
105 * VBVA first, as this is normally disabled after a mode set in case a user
106 * takes over the console that is not aware of VBVA (i.e. the VESA BIOS, and
107 * particularly the old X.Org VESA driver). */
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 unsigned long flags;
115
116 LogFunc(("vboxvideo: %d: fb=%p, num_rects=%u, vbox=%p\n", __LINE__, fb,
117 num_rects, vbox));
118 vbox_enable_accel(vbox);
119 spin_lock_irqsave(&vbox->dev_lock, flags);
120 for (i = 0; i < num_rects; ++i)
121 {
122 struct drm_crtc *crtc;
123 list_for_each_entry(crtc, &fb->dev->mode_config.crtc_list, head)
124 {
125 unsigned crtc_id = to_vbox_crtc(crtc)->crtc_id;
126 VBVACMDHDR cmd_hdr;
127
128 if ( CRTC_FB(crtc) != fb
129 || rects[i].x1 > crtc->x
130 + crtc->hwmode.hdisplay
131 || rects[i].y1 > crtc->y
132 + crtc->hwmode.vdisplay
133 || rects[i].x2 < crtc->x
134 || rects[i].y2 < crtc->y)
135 continue;
136 cmd_hdr.x = (int16_t)rects[i].x1;
137 cmd_hdr.y = (int16_t)rects[i].y1;
138 cmd_hdr.w = (uint16_t)rects[i].x2 - rects[i].x1;
139 cmd_hdr.h = (uint16_t)rects[i].y2 - rects[i].y1;
140 if (VBoxVBVABufferBeginUpdate(&vbox->vbva_info[crtc_id],
141 &vbox->submit_info))
142 {
143 VBoxVBVAWrite(&vbox->vbva_info[crtc_id], &vbox->submit_info, &cmd_hdr,
144 sizeof(cmd_hdr));
145 VBoxVBVABufferEndUpdate(&vbox->vbva_info[crtc_id]);
146 }
147 }
148 }
149 spin_unlock_irqrestore(&vbox->dev_lock, flags);
150 LogFunc(("vboxvideo: %d\n", __LINE__));
151}
152
153static int vbox_user_framebuffer_dirty(struct drm_framebuffer *fb,
154 struct drm_file *file_priv,
155 unsigned flags, unsigned color,
156 struct drm_clip_rect *rects,
157 unsigned num_rects)
158{
159 LogFunc(("vboxvideo: %d, flags=%u\n", __LINE__, flags));
160 vbox_framebuffer_dirty_rectangles(fb, rects, num_rects);
161 return 0;
162}
163
164static const struct drm_framebuffer_funcs vbox_fb_funcs = {
165 .destroy = vbox_user_framebuffer_destroy,
166 .dirty = vbox_user_framebuffer_dirty,
167};
168
169
170int vbox_framebuffer_init(struct drm_device *dev,
171 struct vbox_framebuffer *vbox_fb,
172 struct DRM_MODE_FB_CMD *mode_cmd,
173 struct drm_gem_object *obj)
174{
175 int ret;
176
177 LogFunc(("vboxvideo: %d: dev=%p, vbox_fb=%p, obj=%p\n", __LINE__, dev,
178 vbox_fb, obj));
179 drm_helper_mode_fill_fb_struct(&vbox_fb->base, mode_cmd);
180 vbox_fb->obj = obj;
181 ret = drm_framebuffer_init(dev, &vbox_fb->base, &vbox_fb_funcs);
182 if (ret) {
183 DRM_ERROR("framebuffer init failed %d\n", ret);
184 LogFunc(("vboxvideo: %d\n", __LINE__));
185 return ret;
186 }
187 LogFunc(("vboxvideo: %d\n", __LINE__));
188 return 0;
189}
190
191static struct drm_framebuffer *
192vbox_user_framebuffer_create(struct drm_device *dev,
193 struct drm_file *filp,
194 struct drm_mode_fb_cmd2 *mode_cmd)
195{
196 struct drm_gem_object *obj;
197 struct vbox_framebuffer *vbox_fb;
198 int ret;
199
200 LogFunc(("vboxvideo: %d\n", __LINE__));
201 obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
202 if (obj == NULL)
203 return ERR_PTR(-ENOENT);
204
205 vbox_fb = kzalloc(sizeof(*vbox_fb), GFP_KERNEL);
206 if (!vbox_fb) {
207 drm_gem_object_unreference_unlocked(obj);
208 return ERR_PTR(-ENOMEM);
209 }
210
211 ret = vbox_framebuffer_init(dev, vbox_fb, mode_cmd, obj);
212 if (ret) {
213 drm_gem_object_unreference_unlocked(obj);
214 kfree(vbox_fb);
215 return ERR_PTR(ret);
216 }
217 LogFunc(("vboxvideo: %d\n", __LINE__));
218 return &vbox_fb->base;
219}
220
221static const struct drm_mode_config_funcs vbox_mode_funcs = {
222 .fb_create = vbox_user_framebuffer_create,
223};
224
225static void vbox_accel_fini(struct vbox_private *vbox)
226{
227 if (vbox->vbva_info)
228 {
229 vbox_disable_accel(vbox);
230 kfree(vbox->vbva_info);
231 vbox->vbva_info = NULL;
232 }
233}
234
235static int vbox_accel_init(struct vbox_private *vbox)
236{
237 unsigned i;
238 LogFunc(("vboxvideo: %d: vbox=%p, vbox->num_crtcs=%u, vbox->vbva_info=%p\n",
239 __LINE__, vbox, (unsigned)vbox->num_crtcs, vbox->vbva_info));
240 if (!vbox->vbva_info)
241 {
242 vbox->vbva_info = kzalloc( sizeof(struct VBVABUFFERCONTEXT)
243 * vbox->num_crtcs,
244 GFP_KERNEL);
245 if (!vbox->vbva_info)
246 return -ENOMEM;
247 }
248 /* Take a command buffer for each screen from the end of usable VRAM. */
249 vbox->vram_size -= vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE;
250 for (i = 0; i < vbox->num_crtcs; ++i)
251 VBoxVBVASetupBufferContext(&vbox->vbva_info[i],
252 vbox->vram_size + i * VBVA_MIN_BUFFER_SIZE,
253 VBVA_MIN_BUFFER_SIZE);
254 LogFunc(("vboxvideo: %d: vbox->vbva_info=%p, vbox->vram_size=%u\n",
255 __LINE__, vbox->vbva_info, (unsigned)vbox->vram_size));
256 return 0;
257}
258
259/** Allocation function for the HGSMI heap and data. */
260static DECLCALLBACK(void *) alloc_hgsmi_environ(void *environ, HGSMISIZE size)
261{
262 NOREF(environ);
263 return kmalloc(size, GFP_KERNEL);
264}
265
266
267/** Free function for the HGSMI heap and data. */
268static DECLCALLBACK(void) free_hgsmi_environ(void *environ, void *ptr)
269{
270 NOREF(environ);
271 kfree(ptr);
272}
273
274
275/** Pointers to the HGSMI heap and data manipulation functions. */
276static HGSMIENV hgsmi_environ =
277{
278 NULL,
279 alloc_hgsmi_environ,
280 free_hgsmi_environ
281};
282
283
284/** Do we support the 4.3 plus mode hint reporting interface? */
285static bool have_hgsmi_mode_hints(struct vbox_private *vbox)
286{
287 uint32_t have_hints, have_cursor;
288
289 return RT_SUCCESS(VBoxQueryConfHGSMI(&vbox->submit_info, VBOX_VBVA_CONF32_MODE_HINT_REPORTING, &have_hints))
290 && RT_SUCCESS(VBoxQueryConfHGSMI(&vbox->submit_info, VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING, &have_cursor))
291 && have_hints == VINF_SUCCESS
292 && have_cursor == VINF_SUCCESS;
293}
294
295
296/** Set up our heaps and data exchange buffers in VRAM before handing the rest
297 * to the memory manager. */
298static int vbox_hw_init(struct vbox_private *vbox)
299{
300 uint32_t base_offset, guest_heap_offset, guest_heap_size, host_flags_offset;
301 void *guest_heap;
302
303 vbox->full_vram_size = VBoxVideoGetVRAMSize();
304 vbox->any_pitch = VBoxVideoAnyWidthAllowed();
305 DRM_INFO("VRAM %08x\n", vbox->full_vram_size);
306 VBoxHGSMIGetBaseMappingInfo(vbox->full_vram_size, &base_offset, NULL,
307 &guest_heap_offset, &guest_heap_size, &host_flags_offset);
308 guest_heap = ((uint8_t *)vbox->vram) + base_offset + guest_heap_offset;
309 vbox->host_flags_offset = base_offset + host_flags_offset;
310 if (RT_FAILURE(VBoxHGSMISetupGuestContext(&vbox->submit_info, guest_heap,
311 guest_heap_size,
312 base_offset + guest_heap_offset,
313 &hgsmi_environ)))
314 return -ENOMEM;
315 /* Reduce available VRAM size to reflect the guest heap. */
316 vbox->vram_size = base_offset;
317 /* Linux drm represents monitors as a 32-bit array. */
318 vbox->num_crtcs = RT_MIN(VBoxHGSMIGetMonitorCount(&vbox->submit_info), 32);
319 if (!have_hgsmi_mode_hints(vbox))
320 return -ENOTSUPP;
321 vbox->last_mode_hints = kzalloc(sizeof(VBVAMODEHINT) * vbox->num_crtcs, GFP_KERNEL);
322 if (!vbox->last_mode_hints)
323 return -ENOMEM;
324 return vbox_accel_init(vbox);
325}
326
327static void vbox_hw_fini(struct vbox_private *vbox)
328{
329 vbox_accel_fini(vbox);
330 if (vbox->last_mode_hints)
331 kfree(vbox->last_mode_hints);
332 vbox->last_mode_hints = NULL;
333}
334
335int vbox_driver_load(struct drm_device *dev, unsigned long flags)
336{
337 struct vbox_private *vbox;
338 int ret = 0;
339
340 LogFunc(("vboxvideo: %d: dev=%p\n", __LINE__, dev));
341 if (!VBoxHGSMIIsSupported())
342 return -ENODEV;
343 vbox = kzalloc(sizeof(struct vbox_private), GFP_KERNEL);
344 if (!vbox)
345 return -ENOMEM;
346
347 dev->dev_private = vbox;
348 vbox->dev = dev;
349
350 spin_lock_init(&vbox->dev_lock);
351 /* I hope this won't interfere with the memory manager. */
352 vbox->vram = pci_iomap(dev->pdev, 0, 0);
353 if (!vbox->vram) {
354 ret = -EIO;
355 goto out_free;
356 }
357
358 ret = vbox_hw_init(vbox);
359 if (ret)
360 goto out_free;
361
362 ret = vbox_mm_init(vbox);
363 if (ret)
364 goto out_free;
365
366 drm_mode_config_init(dev);
367
368 dev->mode_config.funcs = (void *)&vbox_mode_funcs;
369 dev->mode_config.min_width = 64;
370 dev->mode_config.min_height = 64;
371 dev->mode_config.preferred_depth = 24;
372 dev->mode_config.max_width = VBE_DISPI_MAX_XRES;
373 dev->mode_config.max_height = VBE_DISPI_MAX_YRES;
374
375 ret = vbox_mode_init(dev);
376 if (ret)
377 goto out_free;
378
379 ret = vbox_irq_init(vbox);
380 if (ret)
381 goto out_free;
382
383 ret = vbox_fbdev_init(dev);
384 if (ret)
385 goto out_free;
386 LogFunc(("vboxvideo: %d: vbox=%p, vbox->vram=%p, vbox->full_vram_size=%u\n",
387 __LINE__, vbox, vbox->vram, (unsigned)vbox->full_vram_size));
388 return 0;
389out_free:
390 vbox_driver_unload(dev);
391 LogFunc(("vboxvideo: %d: ret=%d\n", __LINE__, ret));
392 return ret;
393}
394
395int vbox_driver_unload(struct drm_device *dev)
396{
397 struct vbox_private *vbox = dev->dev_private;
398
399 LogFunc(("vboxvideo: %d\n", __LINE__));
400 vbox_fbdev_fini(dev);
401 vbox_irq_fini(vbox);
402 vbox_mode_fini(dev);
403 if (dev->mode_config.funcs)
404 drm_mode_config_cleanup(dev);
405
406 vbox_hw_fini(vbox);
407 vbox_mm_fini(vbox);
408 if (vbox->vram)
409 pci_iounmap(dev->pdev, vbox->vram);
410 kfree(vbox);
411 dev->dev_private = NULL;
412 LogFunc(("vboxvideo: %d\n", __LINE__));
413 return 0;
414}
415
416/** @note this is described in the DRM framework documentation. AST does not
417 * have it, but we get an oops on driver unload if it is not present. */
418void vbox_driver_lastclose(struct drm_device *dev)
419{
420 struct vbox_private *vbox = dev->dev_private;
421
422 if (vbox->fbdev)
423 drm_fb_helper_restore_fbdev_mode_unlocked(&vbox->fbdev->helper);
424}
425
426int vbox_gem_create(struct drm_device *dev,
427 u32 size, bool iskernel,
428 struct drm_gem_object **obj)
429{
430 struct vbox_bo *vboxbo;
431 int ret;
432
433 LogFunc(("vboxvideo: %d: dev=%p, size=%u, iskernel=%u\n", __LINE__,
434 dev, (unsigned)size, (unsigned)iskernel));
435 *obj = NULL;
436
437 size = roundup(size, PAGE_SIZE);
438 if (size == 0)
439 return -EINVAL;
440
441 ret = vbox_bo_create(dev, size, 0, 0, &vboxbo);
442 if (ret) {
443 if (ret != -ERESTARTSYS)
444 DRM_ERROR("failed to allocate GEM object\n");
445 return ret;
446 }
447 *obj = &vboxbo->gem;
448 LogFunc(("vboxvideo: %d: obj=%p\n", __LINE__, obj));
449 return 0;
450}
451
452int vbox_dumb_create(struct drm_file *file,
453 struct drm_device *dev,
454 struct drm_mode_create_dumb *args)
455{
456 int ret;
457 struct drm_gem_object *gobj;
458 u32 handle;
459
460 LogFunc(("vboxvideo: %d: args->width=%u, args->height=%u, args->bpp=%u\n",
461 __LINE__, (unsigned)args->width, (unsigned)args->height,
462 (unsigned)args->bpp));
463 args->pitch = args->width * ((args->bpp + 7) / 8);
464 args->size = args->pitch * args->height;
465
466 ret = vbox_gem_create(dev, args->size, false,
467 &gobj);
468 if (ret)
469 return ret;
470
471 ret = drm_gem_handle_create(file, gobj, &handle);
472 drm_gem_object_unreference_unlocked(gobj);
473 if (ret)
474 return ret;
475
476 args->handle = handle;
477 LogFunc(("vboxvideo: %d: args->handle=%u\n", __LINE__,
478 (unsigned)args->handle));
479 return 0;
480}
481
482#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0)
483int vbox_dumb_destroy(struct drm_file *file,
484 struct drm_device *dev,
485 uint32_t handle)
486{
487 LogFunc(("vboxvideo: %d: dev=%p, handle=%u\n", __LINE__, dev,
488 (unsigned)handle));
489 return drm_gem_handle_delete(file, handle);
490}
491#endif
492
493static void vbox_bo_unref(struct vbox_bo **bo)
494{
495 struct ttm_buffer_object *tbo;
496
497 if ((*bo) == NULL)
498 return;
499
500 LogFunc(("vboxvideo: %d: bo=%p\n", __LINE__, bo));
501 tbo = &((*bo)->bo);
502 ttm_bo_unref(&tbo);
503 if (tbo == NULL)
504 *bo = NULL;
505
506}
507void vbox_gem_free_object(struct drm_gem_object *obj)
508{
509 struct vbox_bo *vbox_bo = gem_to_vbox_bo(obj);
510
511 LogFunc(("vboxvideo: %d: vbox_bo=%p\n", __LINE__, vbox_bo));
512 vbox_bo_unref(&vbox_bo);
513}
514
515
516static inline u64 vbox_bo_mmap_offset(struct vbox_bo *bo)
517{
518#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0)
519 return bo->bo.addr_space_offset;
520#else
521 return drm_vma_node_offset_addr(&bo->bo.vma_node);
522#endif
523}
524int
525vbox_dumb_mmap_offset(struct drm_file *file,
526 struct drm_device *dev,
527 uint32_t handle,
528 uint64_t *offset)
529{
530 struct drm_gem_object *obj;
531 int ret;
532 struct vbox_bo *bo;
533
534 LogFunc(("vboxvideo: %d: dev=%p, handle=%u\n", __LINE__,
535 dev, (unsigned)handle));
536 mutex_lock(&dev->struct_mutex);
537 obj = drm_gem_object_lookup(dev, file, handle);
538 if (obj == NULL) {
539 ret = -ENOENT;
540 goto out_unlock;
541 }
542
543 bo = gem_to_vbox_bo(obj);
544 *offset = vbox_bo_mmap_offset(bo);
545
546 drm_gem_object_unreference(obj);
547 ret = 0;
548 LogFunc(("vboxvideo: %d: bo=%p, *offset=%llu\n", __LINE__,
549 bo, (unsigned long long)*offset));
550out_unlock:
551 mutex_unlock(&dev->struct_mutex);
552 return ret;
553
554}
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