2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
9 #include <linux/module.h>
10 #include <linux/slab.h>
11 #include <drm/drm_fb_helper.h>
15 static int bochs_modeset = -1;
16 module_param_named(modeset, bochs_modeset, int, 0444);
17 MODULE_PARM_DESC(modeset, "enable/disable kernel modesetting");
19 static bool enable_fbdev = true;
20 module_param_named(fbdev, enable_fbdev, bool, 0444);
21 MODULE_PARM_DESC(fbdev, "register fbdev device");
23 /* ---------------------------------------------------------------------- */
26 static void bochs_unload(struct drm_device *dev)
28 struct bochs_device *bochs = dev->dev_private;
30 bochs_fbdev_fini(bochs);
31 bochs_kms_fini(bochs);
35 dev->dev_private = NULL;
38 static int bochs_load(struct drm_device *dev)
40 struct bochs_device *bochs;
43 bochs = kzalloc(sizeof(*bochs), GFP_KERNEL);
46 dev->dev_private = bochs;
49 ret = bochs_hw_init(dev);
53 ret = bochs_mm_init(bochs);
57 ret = bochs_kms_init(bochs);
62 bochs_fbdev_init(bochs);
71 static const struct file_operations bochs_fops = {
74 .release = drm_release,
75 .unlocked_ioctl = drm_ioctl,
76 .compat_ioctl = drm_compat_ioctl,
83 static struct drm_driver bochs_driver = {
84 .driver_features = DRIVER_GEM | DRIVER_MODESET,
87 .desc = "bochs dispi vga interface (qemu stdvga)",
91 .gem_free_object_unlocked = bochs_gem_free_object,
92 .dumb_create = bochs_dumb_create,
93 .dumb_map_offset = bochs_dumb_mmap_offset,
96 /* ---------------------------------------------------------------------- */
99 #ifdef CONFIG_PM_SLEEP
100 static int bochs_pm_suspend(struct device *dev)
102 struct pci_dev *pdev = to_pci_dev(dev);
103 struct drm_device *drm_dev = pci_get_drvdata(pdev);
104 struct bochs_device *bochs = drm_dev->dev_private;
106 drm_kms_helper_poll_disable(drm_dev);
108 drm_fb_helper_set_suspend_unlocked(&bochs->fb.helper, 1);
113 static int bochs_pm_resume(struct device *dev)
115 struct pci_dev *pdev = to_pci_dev(dev);
116 struct drm_device *drm_dev = pci_get_drvdata(pdev);
117 struct bochs_device *bochs = drm_dev->dev_private;
119 drm_helper_resume_force_mode(drm_dev);
121 drm_fb_helper_set_suspend_unlocked(&bochs->fb.helper, 0);
123 drm_kms_helper_poll_enable(drm_dev);
128 static const struct dev_pm_ops bochs_pm_ops = {
129 SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
133 /* ---------------------------------------------------------------------- */
136 static int bochs_pci_probe(struct pci_dev *pdev,
137 const struct pci_device_id *ent)
139 struct drm_device *dev;
140 unsigned long fbsize;
143 fbsize = pci_resource_len(pdev, 0);
144 if (fbsize < 4 * 1024 * 1024) {
145 DRM_ERROR("less than 4 MB video memory, ignoring device\n");
149 ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, 0, "bochsdrmfb");
153 dev = drm_dev_alloc(&bochs_driver, &pdev->dev);
158 pci_set_drvdata(pdev, dev);
160 ret = bochs_load(dev);
164 ret = drm_dev_register(dev, 0);
177 static void bochs_pci_remove(struct pci_dev *pdev)
179 struct drm_device *dev = pci_get_drvdata(pdev);
181 drm_dev_unregister(dev);
186 static const struct pci_device_id bochs_pci_tbl[] = {
190 .subvendor = PCI_SUBVENDOR_ID_REDHAT_QUMRANET,
191 .subdevice = PCI_SUBDEVICE_ID_QEMU,
192 .driver_data = BOCHS_QEMU_STDVGA,
197 .subvendor = PCI_ANY_ID,
198 .subdevice = PCI_ANY_ID,
199 .driver_data = BOCHS_UNKNOWN,
201 { /* end of list */ }
204 static struct pci_driver bochs_pci_driver = {
206 .id_table = bochs_pci_tbl,
207 .probe = bochs_pci_probe,
208 .remove = bochs_pci_remove,
209 .driver.pm = &bochs_pm_ops,
212 /* ---------------------------------------------------------------------- */
213 /* module init/exit */
215 static int __init bochs_init(void)
217 if (vgacon_text_force() && bochs_modeset == -1)
220 if (bochs_modeset == 0)
223 return pci_register_driver(&bochs_pci_driver);
226 static void __exit bochs_exit(void)
228 pci_unregister_driver(&bochs_pci_driver);
231 module_init(bochs_init);
232 module_exit(bochs_exit);
234 MODULE_DEVICE_TABLE(pci, bochs_pci_tbl);
235 MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
236 MODULE_LICENSE("GPL");