1 /*
2 * Copyright (C) 2013-2017 Oracle Corporation
3 * This file is based on ast_drv.c
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
24 * of the Software.
25 *
26 * Authors: Dave Airlie <airlied@redhat.com>
27 * Michael Thayer <michael.thayer@oracle.com,
28 * Hans de Goede <hdegoede@redhat.com>
29 */
30 #include <linux/module.h>
31 #include <linux/console.h>
32 #include <linux/vt_kern.h>
33
34 #include <drm/drmP.h>
35 #include <drm/drm_crtc_helper.h>
36
37 #include "vbox_drv.h"
38
39 static int vbox_modeset = -1;
40
41 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
42 module_param_named(modeset, vbox_modeset, int, 0400);
43
44 static struct drm_driver driver;
45
46 static const struct pci_device_id pciidlist[] = {
47 { 0x80ee, 0xbeef, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
48 { 0, 0, 0},
49 };
50 MODULE_DEVICE_TABLE(pci, pciidlist);
51
vbox_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)52 static int vbox_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
53 {
54 return drm_get_pci_dev(pdev, ent, &driver);
55 }
56
vbox_pci_remove(struct pci_dev * pdev)57 static void vbox_pci_remove(struct pci_dev *pdev)
58 {
59 struct drm_device *dev = pci_get_drvdata(pdev);
60
61 drm_put_dev(dev);
62 }
63
vbox_drm_freeze(struct drm_device * dev)64 static int vbox_drm_freeze(struct drm_device *dev)
65 {
66 struct vbox_private *vbox = dev->dev_private;
67
68 drm_kms_helper_poll_disable(dev);
69
70 pci_save_state(dev->pdev);
71
72 drm_fb_helper_set_suspend_unlocked(&vbox->fbdev->helper, true);
73
74 return 0;
75 }
76
vbox_drm_thaw(struct drm_device * dev)77 static int vbox_drm_thaw(struct drm_device *dev)
78 {
79 struct vbox_private *vbox = dev->dev_private;
80
81 drm_mode_config_reset(dev);
82 drm_helper_resume_force_mode(dev);
83 drm_fb_helper_set_suspend_unlocked(&vbox->fbdev->helper, false);
84
85 return 0;
86 }
87
vbox_drm_resume(struct drm_device * dev)88 static int vbox_drm_resume(struct drm_device *dev)
89 {
90 int ret;
91
92 if (pci_enable_device(dev->pdev))
93 return -EIO;
94
95 ret = vbox_drm_thaw(dev);
96 if (ret)
97 return ret;
98
99 drm_kms_helper_poll_enable(dev);
100
101 return 0;
102 }
103
vbox_pm_suspend(struct device * dev)104 static int vbox_pm_suspend(struct device *dev)
105 {
106 struct pci_dev *pdev = to_pci_dev(dev);
107 struct drm_device *ddev = pci_get_drvdata(pdev);
108 int error;
109
110 error = vbox_drm_freeze(ddev);
111 if (error)
112 return error;
113
114 pci_disable_device(pdev);
115 pci_set_power_state(pdev, PCI_D3hot);
116
117 return 0;
118 }
119
vbox_pm_resume(struct device * dev)120 static int vbox_pm_resume(struct device *dev)
121 {
122 struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
123
124 return vbox_drm_resume(ddev);
125 }
126
vbox_pm_freeze(struct device * dev)127 static int vbox_pm_freeze(struct device *dev)
128 {
129 struct pci_dev *pdev = to_pci_dev(dev);
130 struct drm_device *ddev = pci_get_drvdata(pdev);
131
132 if (!ddev || !ddev->dev_private)
133 return -ENODEV;
134
135 return vbox_drm_freeze(ddev);
136 }
137
vbox_pm_thaw(struct device * dev)138 static int vbox_pm_thaw(struct device *dev)
139 {
140 struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
141
142 return vbox_drm_thaw(ddev);
143 }
144
vbox_pm_poweroff(struct device * dev)145 static int vbox_pm_poweroff(struct device *dev)
146 {
147 struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
148
149 return vbox_drm_freeze(ddev);
150 }
151
152 static const struct dev_pm_ops vbox_pm_ops = {
153 .suspend = vbox_pm_suspend,
154 .resume = vbox_pm_resume,
155 .freeze = vbox_pm_freeze,
156 .thaw = vbox_pm_thaw,
157 .poweroff = vbox_pm_poweroff,
158 .restore = vbox_pm_resume,
159 };
160
161 static struct pci_driver vbox_pci_driver = {
162 .name = DRIVER_NAME,
163 .id_table = pciidlist,
164 .probe = vbox_pci_probe,
165 .remove = vbox_pci_remove,
166 .driver.pm = &vbox_pm_ops,
167 };
168
169 static const struct file_operations vbox_fops = {
170 .owner = THIS_MODULE,
171 .open = drm_open,
172 .release = drm_release,
173 .unlocked_ioctl = drm_ioctl,
174 .mmap = vbox_mmap,
175 .poll = drm_poll,
176 #ifdef CONFIG_COMPAT
177 .compat_ioctl = drm_compat_ioctl,
178 #endif
179 .read = drm_read,
180 };
181
vbox_master_set(struct drm_device * dev,struct drm_file * file_priv,bool from_open)182 static int vbox_master_set(struct drm_device *dev,
183 struct drm_file *file_priv, bool from_open)
184 {
185 struct vbox_private *vbox = dev->dev_private;
186
187 /*
188 * We do not yet know whether the new owner can handle hotplug, so we
189 * do not advertise dynamic modes on the first query and send a
190 * tentative hotplug notification after that to see if they query again.
191 */
192 vbox->initial_mode_queried = false;
193
194 mutex_lock(&vbox->hw_mutex);
195 /*
196 * Disable VBVA when someone releases master in case the next person
197 * tries tries to do VESA.
198 */
199 /** @todo work out if anyone is likely to and whether it will work. */
200 /*
201 * Update: we also disable it because if the new master does not do
202 * dirty rectangle reporting (e.g. old versions of Plymouth) then at
203 * least the first screen will still be updated. We enable it as soon
204 * as we receive a dirty rectangle report.
205 */
206 vbox_disable_accel(vbox);
207 mutex_unlock(&vbox->hw_mutex);
208
209 return 0;
210 }
211
vbox_master_drop(struct drm_device * dev,struct drm_file * file_priv)212 static void vbox_master_drop(struct drm_device *dev, struct drm_file *file_priv)
213 {
214 struct vbox_private *vbox = dev->dev_private;
215
216 /* See vbox_master_set() */
217 vbox->initial_mode_queried = false;
218
219 mutex_lock(&vbox->hw_mutex);
220 vbox_disable_accel(vbox);
221 mutex_unlock(&vbox->hw_mutex);
222 }
223
224 static struct drm_driver driver = {
225 .driver_features =
226 DRIVER_MODESET | DRIVER_GEM | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
227 DRIVER_PRIME,
228 .dev_priv_size = 0,
229
230 .load = vbox_driver_load,
231 .unload = vbox_driver_unload,
232 .lastclose = vbox_driver_lastclose,
233 .master_set = vbox_master_set,
234 .master_drop = vbox_master_drop,
235
236 .fops = &vbox_fops,
237 .irq_handler = vbox_irq_handler,
238 .name = DRIVER_NAME,
239 .desc = DRIVER_DESC,
240 .date = DRIVER_DATE,
241 .major = DRIVER_MAJOR,
242 .minor = DRIVER_MINOR,
243 .patchlevel = DRIVER_PATCHLEVEL,
244
245 .gem_free_object = vbox_gem_free_object,
246 .dumb_create = vbox_dumb_create,
247 .dumb_map_offset = vbox_dumb_mmap_offset,
248 .dumb_destroy = drm_gem_dumb_destroy,
249 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
250 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
251 .gem_prime_export = drm_gem_prime_export,
252 .gem_prime_import = drm_gem_prime_import,
253 .gem_prime_pin = vbox_gem_prime_pin,
254 .gem_prime_unpin = vbox_gem_prime_unpin,
255 .gem_prime_get_sg_table = vbox_gem_prime_get_sg_table,
256 .gem_prime_import_sg_table = vbox_gem_prime_import_sg_table,
257 .gem_prime_vmap = vbox_gem_prime_vmap,
258 .gem_prime_vunmap = vbox_gem_prime_vunmap,
259 .gem_prime_mmap = vbox_gem_prime_mmap,
260 };
261
vbox_init(void)262 static int __init vbox_init(void)
263 {
264 #ifdef CONFIG_VGA_CONSOLE
265 if (vgacon_text_force() && vbox_modeset == -1)
266 return -EINVAL;
267 #endif
268
269 if (vbox_modeset == 0)
270 return -EINVAL;
271
272 return pci_register_driver(&vbox_pci_driver);
273 }
274
vbox_exit(void)275 static void __exit vbox_exit(void)
276 {
277 pci_unregister_driver(&vbox_pci_driver);
278 }
279
280 module_init(vbox_init);
281 module_exit(vbox_exit);
282
283 MODULE_AUTHOR("Oracle Corporation");
284 MODULE_DESCRIPTION(DRIVER_DESC);
285 MODULE_LICENSE("GPL and additional rights");
286