VirtualBox

source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_drv.c@ 90583

最後變更 在這個檔案從90583是 90583,由 vboxsync 提交於 4 年 前

linux/drm: intent fix. bugref:10066
  • 屬性 svn:eol-style 設為 native
  • 屬性 svn:keywords 設為 Author Date Id Revision
檔案大小: 11.5 KB
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1/* $Id: vbox_drv.c 90583 2021-08-09 20:26:05Z vboxsync $ */
2/** @file
3 * VirtualBox Additions Linux kernel video driver
4 */
5
6/*
7 * Copyright (C) 2013-2020 Oracle Corporation
8 * This file is based on ast_drv.c
9 * Copyright 2012 Red Hat Inc.
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the
13 * "Software"), to deal in the Software without restriction, including
14 * without limitation the rights to use, copy, modify, merge, publish,
15 * distribute, sub license, and/or sell copies of the Software, and to
16 * permit persons to whom the Software is furnished to do so, subject to
17 * the following conditions:
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
23 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
24 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
25 * USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 * The above copyright notice and this permission notice (including the
28 * next paragraph) shall be included in all copies or substantial portions
29 * of the Software.
30 *
31 * Authors: Dave Airlie <[email protected]>
32 * Michael Thayer <[email protected],
33 * Hans de Goede <[email protected]>
34 */
35#include <linux/module.h>
36#include <linux/console.h>
37#include <linux/vt_kern.h>
38
39#include "vbox_drv.h"
40
41#include <drm/drm_crtc_helper.h>
42#if RTLNX_VER_MIN(5,1,0) || RTLNX_RHEL_MAJ_PREREQ(8,1)
43# include <drm/drm_probe_helper.h>
44#endif
45
46#if RTLNX_VER_MIN(5,14,0)
47# include <drm/drm_aperture.h>
48#endif
49
50#include "version-generated.h"
51#include "revision-generated.h"
52
53static int vbox_modeset = -1;
54
55MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
56module_param_named(modeset, vbox_modeset, int, 0400);
57
58static struct drm_driver driver;
59
60static const struct pci_device_id pciidlist[] = {
61 { 0x80ee, 0xbeef, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
62 { 0, 0, 0},
63};
64MODULE_DEVICE_TABLE(pci, pciidlist);
65
66static int vbox_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
67{
68#if RTLNX_VER_MIN(4,19,0) || RTLNX_RHEL_MIN(8,3)
69 struct drm_device *dev = NULL;
70 int ret = 0;
71
72# if RTLNX_VER_MIN(5,14,0)
73 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, "vboxvideofb");
74 if (ret)
75 {
76 printk("unable to remove conflicting framebuffer devices\n");
77 return ret;
78 }
79# endif /* 5.14 */
80
81 dev = drm_dev_alloc(&driver, &pdev->dev);
82 if (IS_ERR(dev)) {
83 ret = PTR_ERR(dev);
84 goto err_drv_alloc;
85 }
86# if RTLNX_VER_MAX(5,14,0)
87 dev->pdev = pdev;
88# endif
89 pci_set_drvdata(pdev, dev);
90
91 ret = vbox_driver_load(dev);
92 if (ret)
93 goto err_vbox_driver_load;
94
95 ret = drm_dev_register(dev, 0);
96 if (ret)
97 goto err_drv_dev_register;
98 return ret;
99
100err_drv_dev_register:
101 vbox_driver_unload(dev);
102err_vbox_driver_load:
103 drm_dev_put(dev);
104err_drv_alloc:
105 return ret;
106#else /* < 4.19.0 || RHEL < 8.3 */
107 return drm_get_pci_dev(pdev, ent, &driver);
108#endif
109}
110
111static void vbox_pci_remove(struct pci_dev *pdev)
112{
113 struct drm_device *dev = pci_get_drvdata(pdev);
114
115#if RTLNX_VER_MAX(4,19,0)
116 drm_put_dev(dev);
117#else
118 drm_dev_unregister(dev);
119 vbox_driver_unload(dev);
120 drm_dev_put(dev);
121#endif
122}
123
124#if RTLNX_VER_MAX(4,9,0) && !RTLNX_RHEL_MAJ_PREREQ(7,4)
125static void drm_fb_helper_set_suspend_unlocked(struct drm_fb_helper *fb_helper,
126 bool suspend)
127{
128 if (!fb_helper || !fb_helper->fbdev)
129 return;
130
131 console_lock();
132 fb_set_suspend(fb_helper->fbdev, suspend);
133 console_unlock();
134}
135#endif
136
137static int vbox_drm_freeze(struct drm_device *dev)
138{
139 struct vbox_private *vbox = dev->dev_private;
140
141 drm_kms_helper_poll_disable(dev);
142
143 pci_save_state(VBOX_DRM_TO_PCI_DEV(dev));
144
145 drm_fb_helper_set_suspend_unlocked(&vbox->fbdev->helper, true);
146
147 return 0;
148}
149
150static int vbox_drm_thaw(struct drm_device *dev)
151{
152 struct vbox_private *vbox = dev->dev_private;
153
154 drm_mode_config_reset(dev);
155 drm_helper_resume_force_mode(dev);
156 drm_fb_helper_set_suspend_unlocked(&vbox->fbdev->helper, false);
157
158 return 0;
159}
160
161static int vbox_drm_resume(struct drm_device *dev)
162{
163 int ret;
164
165 if (pci_enable_device(VBOX_DRM_TO_PCI_DEV(dev)))
166 return -EIO;
167
168 ret = vbox_drm_thaw(dev);
169 if (ret)
170 return ret;
171
172 drm_kms_helper_poll_enable(dev);
173
174 return 0;
175}
176
177static int vbox_pm_suspend(struct device *dev)
178{
179 struct pci_dev *pdev = to_pci_dev(dev);
180 struct drm_device *ddev = pci_get_drvdata(pdev);
181 int error;
182
183 error = vbox_drm_freeze(ddev);
184 if (error)
185 return error;
186
187 pci_disable_device(pdev);
188 pci_set_power_state(pdev, PCI_D3hot);
189
190 return 0;
191}
192
193static int vbox_pm_resume(struct device *dev)
194{
195 struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
196
197 return vbox_drm_resume(ddev);
198}
199
200static int vbox_pm_freeze(struct device *dev)
201{
202 struct pci_dev *pdev = to_pci_dev(dev);
203 struct drm_device *ddev = pci_get_drvdata(pdev);
204
205 if (!ddev || !ddev->dev_private)
206 return -ENODEV;
207
208 return vbox_drm_freeze(ddev);
209}
210
211static int vbox_pm_thaw(struct device *dev)
212{
213 struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
214
215 return vbox_drm_thaw(ddev);
216}
217
218static int vbox_pm_poweroff(struct device *dev)
219{
220 struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
221
222 return vbox_drm_freeze(ddev);
223}
224
225static const struct dev_pm_ops vbox_pm_ops = {
226 .suspend = vbox_pm_suspend,
227 .resume = vbox_pm_resume,
228 .freeze = vbox_pm_freeze,
229 .thaw = vbox_pm_thaw,
230 .poweroff = vbox_pm_poweroff,
231 .restore = vbox_pm_resume,
232};
233
234static struct pci_driver vbox_pci_driver = {
235 .name = DRIVER_NAME,
236 .id_table = pciidlist,
237 .probe = vbox_pci_probe,
238 .remove = vbox_pci_remove,
239 .driver.pm = &vbox_pm_ops,
240};
241
242#if RTLNX_VER_MAX(4,7,0) && !RTLNX_RHEL_MAJ_PREREQ(7,4)
243/* This works around a bug in X servers prior to 1.18.4, which sometimes
244 * submit more dirty rectangles than the kernel is willing to handle and
245 * then disable dirty rectangle handling altogether when they see the
246 * EINVAL error. I do not want the code to hang around forever, which is
247 * why I am limiting it to certain kernel versions. We can increase the
248 * limit if some distributions uses old X servers with new kernels. */
249long vbox_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
250{
251 long rc = drm_ioctl(filp, cmd, arg);
252
253 if (cmd == DRM_IOCTL_MODE_DIRTYFB && rc == -EINVAL)
254 return -EOVERFLOW;
255
256 return rc;
257}
258#endif /* RTLNX_VER_MAX(4,7,0) && !RTLNX_RHEL_MAJ_PREREQ(7,4) */
259
260static const struct file_operations vbox_fops = {
261 .owner = THIS_MODULE,
262 .open = drm_open,
263 .release = drm_release,
264#if RTLNX_VER_MAX(4,7,0) && !RTLNX_RHEL_MAJ_PREREQ(7,4)
265 .unlocked_ioctl = vbox_ioctl,
266#else
267 .unlocked_ioctl = drm_ioctl,
268#endif
269 .mmap = vbox_mmap,
270 .poll = drm_poll,
271#if RTLNX_VER_MAX(3,12,0) && !RTLNX_RHEL_MAJ_PREREQ(7,0)
272 .fasync = drm_fasync,
273#endif
274#ifdef CONFIG_COMPAT
275 .compat_ioctl = drm_compat_ioctl,
276#endif
277 .read = drm_read,
278};
279
280#if RTLNX_VER_MIN(5,9,0) || RTLNX_RHEL_MIN(8,4) || RTLNX_SUSE_MAJ_PREREQ(15,3)
281static void
282#else
283static int
284#endif
285vbox_master_set(struct drm_device *dev,
286 struct drm_file *file_priv, bool from_open)
287{
288 struct vbox_private *vbox = dev->dev_private;
289
290 /*
291 * We do not yet know whether the new owner can handle hotplug, so we
292 * do not advertise dynamic modes on the first query and send a
293 * tentative hotplug notification after that to see if they query again.
294 */
295 vbox->initial_mode_queried = false;
296
297 mutex_lock(&vbox->hw_mutex);
298 /* Start the refresh timer in case the user does not provide dirty
299 * rectangles. */
300 vbox->need_refresh_timer = true;
301 schedule_delayed_work(&vbox->refresh_work, VBOX_REFRESH_PERIOD);
302 mutex_unlock(&vbox->hw_mutex);
303
304#if RTLNX_VER_MAX(5,9,0) && !RTLNX_RHEL_MAJ_PREREQ(8,4) && !RTLNX_SUSE_MAJ_PREREQ(15,3)
305 return 0;
306#endif
307}
308
309#if RTLNX_VER_MAX(4,8,0) && !RTLNX_RHEL_MAJ_PREREQ(7,4)
310static void vbox_master_drop(struct drm_device *dev,
311 struct drm_file *file_priv, bool from_release)
312#else
313static void vbox_master_drop(struct drm_device *dev, struct drm_file *file_priv)
314#endif
315{
316 struct vbox_private *vbox = dev->dev_private;
317
318 /* See vbox_master_set() */
319 vbox->initial_mode_queried = false;
320 vbox_report_caps(vbox);
321
322 mutex_lock(&vbox->hw_mutex);
323 vbox->need_refresh_timer = false;
324 mutex_unlock(&vbox->hw_mutex);
325}
326
327static struct drm_driver driver = {
328#if RTLNX_VER_MAX(5,4,0) && !RTLNX_RHEL_MAJ_PREREQ(8,3) && !RTLNX_SUSE_MAJ_PREREQ(15,3)
329 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_HAVE_IRQ |
330# if RTLNX_VER_MAX(5,1,0) && !RTLNX_RHEL_MAJ_PREREQ(8,1)
331 DRIVER_IRQ_SHARED |
332# endif
333 DRIVER_PRIME,
334#else /* >= 5.4.0 && RHEL >= 8.3 && SLES >= 15-SP3 */
335 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_HAVE_IRQ,
336#endif /* < 5.4.0 */
337
338#if RTLNX_VER_MAX(4,19,0) && !RTLNX_RHEL_MAJ_PREREQ(8,3)
339 /* Legacy hooks, but still supported. */
340 .load = vbox_driver_load,
341 .unload = vbox_driver_unload,
342#endif
343 .lastclose = vbox_driver_lastclose,
344 .master_set = vbox_master_set,
345 .master_drop = vbox_master_drop,
346#if RTLNX_VER_MIN(3,18,0) || RTLNX_RHEL_MAJ_PREREQ(7,2)
347# if RTLNX_VER_MAX(4,14,0) && !RTLNX_RHEL_MAJ_PREREQ(7,5) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
348 .set_busid = drm_pci_set_busid,
349# endif
350#endif
351
352 .fops = &vbox_fops,
353 .irq_handler = vbox_irq_handler,
354 .name = DRIVER_NAME,
355 .desc = DRIVER_DESC,
356 .date = DRIVER_DATE,
357 .major = DRIVER_MAJOR,
358 .minor = DRIVER_MINOR,
359 .patchlevel = DRIVER_PATCHLEVEL,
360
361#if RTLNX_VER_MAX(4,7,0)
362 .gem_free_object = vbox_gem_free_object,
363#endif
364 .dumb_create = vbox_dumb_create,
365 .dumb_map_offset = vbox_dumb_mmap_offset,
366#if RTLNX_VER_MAX(3,12,0) && !RTLNX_RHEL_MAJ_PREREQ(7,3)
367 .dumb_destroy = vbox_dumb_destroy,
368#elif RTLNX_VER_MAX(5,12,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
369 .dumb_destroy = drm_gem_dumb_destroy,
370#endif
371 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
372 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
373
374 .gem_prime_import = drm_gem_prime_import,
375 .gem_prime_import_sg_table = vbox_gem_prime_import_sg_table,
376 .gem_prime_mmap = vbox_gem_prime_mmap,
377
378#if RTLNX_VER_MAX(5,11,0) && !RTLNX_RHEL_MAJ_PREREQ(8,5)
379 .dev_priv_size = 0,
380# if RTLNX_VER_MIN(4,7,0)
381 .gem_free_object_unlocked = vbox_gem_free_object,
382# endif
383 .gem_prime_export = drm_gem_prime_export,
384 .gem_prime_pin = vbox_gem_prime_pin,
385 .gem_prime_unpin = vbox_gem_prime_unpin,
386 .gem_prime_get_sg_table = vbox_gem_prime_get_sg_table,
387 .gem_prime_vmap = vbox_gem_prime_vmap,
388 .gem_prime_vunmap = vbox_gem_prime_vunmap,
389#endif
390};
391
392static int __init vbox_init(void)
393{
394 printk("vboxvideo: loading version " VBOX_VERSION_STRING " r" __stringify(VBOX_SVN_REV) "\n");
395#if defined(CONFIG_VGA_CONSOLE) || RTLNX_VER_MIN(4,7,0)
396 if (vgacon_text_force() && vbox_modeset == -1)
397 {
398 printk("vboxvideo: kernel is running with *nomodeset* parameter,\n");
399 printk("vboxvideo: please consider either to remove it or load driver\n");
400 printk("vboxvideo: with parameter modeset=1, unloading\n");
401 return -EINVAL;
402 }
403#endif
404
405 if (vbox_modeset == 0)
406 {
407 printk("vboxvideo: driver loaded with modeset=0 parameter, unloading\n");
408 return -EINVAL;
409 }
410
411#if RTLNX_VER_MIN(3,18,0) || RTLNX_RHEL_MAJ_PREREQ(7,3)
412 return pci_register_driver(&vbox_pci_driver);
413#else
414 return drm_pci_init(&driver, &vbox_pci_driver);
415#endif
416}
417
418static void __exit vbox_exit(void)
419{
420#if RTLNX_VER_MIN(3,18,0) || RTLNX_RHEL_MAJ_PREREQ(7,3)
421 pci_unregister_driver(&vbox_pci_driver);
422#else
423 drm_pci_exit(&driver, &vbox_pci_driver);
424#endif
425}
426
427module_init(vbox_init);
428module_exit(vbox_exit);
429
430MODULE_AUTHOR(DRIVER_AUTHOR);
431MODULE_DESCRIPTION(DRIVER_DESC);
432MODULE_LICENSE("GPL and additional rights");
433#ifdef MODULE_VERSION
434MODULE_VERSION(VBOX_VERSION_STRING " r" __stringify(VBOX_SVN_REV));
435#endif
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