1 /*
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.
6 */
7
8 #include <linux/mm.h>
9 #include <linux/module.h>
10 #include <linux/slab.h>
11
12 #include "bochs.h"
13
14 static bool enable_fbdev = true;
15 module_param_named(fbdev, enable_fbdev, bool, 0444);
16 MODULE_PARM_DESC(fbdev, "register fbdev device");
17
18 /* ---------------------------------------------------------------------- */
19 /* drm interface */
20
bochs_unload(struct drm_device * dev)21 static int bochs_unload(struct drm_device *dev)
22 {
23 struct bochs_device *bochs = dev->dev_private;
24
25 bochs_fbdev_fini(bochs);
26 bochs_kms_fini(bochs);
27 bochs_mm_fini(bochs);
28 bochs_hw_fini(dev);
29 kfree(bochs);
30 dev->dev_private = NULL;
31 return 0;
32 }
33
bochs_load(struct drm_device * dev,unsigned long flags)34 static int bochs_load(struct drm_device *dev, unsigned long flags)
35 {
36 struct bochs_device *bochs;
37 int ret;
38
39 bochs = kzalloc(sizeof(*bochs), GFP_KERNEL);
40 if (bochs == NULL)
41 return -ENOMEM;
42 dev->dev_private = bochs;
43 bochs->dev = dev;
44
45 ret = bochs_hw_init(dev, flags);
46 if (ret)
47 goto err;
48
49 ret = bochs_mm_init(bochs);
50 if (ret)
51 goto err;
52
53 ret = bochs_kms_init(bochs);
54 if (ret)
55 goto err;
56
57 if (enable_fbdev)
58 bochs_fbdev_init(bochs);
59
60 return 0;
61
62 err:
63 bochs_unload(dev);
64 return ret;
65 }
66
67 static const struct file_operations bochs_fops = {
68 .owner = THIS_MODULE,
69 .open = drm_open,
70 .release = drm_release,
71 .unlocked_ioctl = drm_ioctl,
72 #ifdef CONFIG_COMPAT
73 .compat_ioctl = drm_compat_ioctl,
74 #endif
75 .poll = drm_poll,
76 .read = drm_read,
77 .llseek = no_llseek,
78 .mmap = bochs_mmap,
79 };
80
81 static struct drm_driver bochs_driver = {
82 .driver_features = DRIVER_GEM | DRIVER_MODESET,
83 .load = bochs_load,
84 .unload = bochs_unload,
85 .set_busid = drm_pci_set_busid,
86 .fops = &bochs_fops,
87 .name = "bochs-drm",
88 .desc = "bochs dispi vga interface (qemu stdvga)",
89 .date = "20130925",
90 .major = 1,
91 .minor = 0,
92 .gem_free_object = bochs_gem_free_object,
93 .dumb_create = bochs_dumb_create,
94 .dumb_map_offset = bochs_dumb_mmap_offset,
95 .dumb_destroy = drm_gem_dumb_destroy,
96 };
97
98 /* ---------------------------------------------------------------------- */
99 /* pm interface */
100
101 #ifdef CONFIG_PM_SLEEP
bochs_pm_suspend(struct device * dev)102 static int bochs_pm_suspend(struct device *dev)
103 {
104 struct pci_dev *pdev = to_pci_dev(dev);
105 struct drm_device *drm_dev = pci_get_drvdata(pdev);
106 struct bochs_device *bochs = drm_dev->dev_private;
107
108 drm_kms_helper_poll_disable(drm_dev);
109
110 if (bochs->fb.initialized) {
111 console_lock();
112 drm_fb_helper_set_suspend(&bochs->fb.helper, 1);
113 console_unlock();
114 }
115
116 return 0;
117 }
118
bochs_pm_resume(struct device * dev)119 static int bochs_pm_resume(struct device *dev)
120 {
121 struct pci_dev *pdev = to_pci_dev(dev);
122 struct drm_device *drm_dev = pci_get_drvdata(pdev);
123 struct bochs_device *bochs = drm_dev->dev_private;
124
125 drm_helper_resume_force_mode(drm_dev);
126
127 if (bochs->fb.initialized) {
128 console_lock();
129 drm_fb_helper_set_suspend(&bochs->fb.helper, 0);
130 console_unlock();
131 }
132
133 drm_kms_helper_poll_enable(drm_dev);
134 return 0;
135 }
136 #endif
137
138 static const struct dev_pm_ops bochs_pm_ops = {
139 SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
140 bochs_pm_resume)
141 };
142
143 /* ---------------------------------------------------------------------- */
144 /* pci interface */
145
bochs_kick_out_firmware_fb(struct pci_dev * pdev)146 static int bochs_kick_out_firmware_fb(struct pci_dev *pdev)
147 {
148 struct apertures_struct *ap;
149
150 ap = alloc_apertures(1);
151 if (!ap)
152 return -ENOMEM;
153
154 ap->ranges[0].base = pci_resource_start(pdev, 0);
155 ap->ranges[0].size = pci_resource_len(pdev, 0);
156 remove_conflicting_framebuffers(ap, "bochsdrmfb", false);
157 kfree(ap);
158
159 return 0;
160 }
161
bochs_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)162 static int bochs_pci_probe(struct pci_dev *pdev,
163 const struct pci_device_id *ent)
164 {
165 int ret;
166
167 ret = bochs_kick_out_firmware_fb(pdev);
168 if (ret)
169 return ret;
170
171 return drm_get_pci_dev(pdev, ent, &bochs_driver);
172 }
173
bochs_pci_remove(struct pci_dev * pdev)174 static void bochs_pci_remove(struct pci_dev *pdev)
175 {
176 struct drm_device *dev = pci_get_drvdata(pdev);
177
178 drm_put_dev(dev);
179 }
180
181 static const struct pci_device_id bochs_pci_tbl[] = {
182 {
183 .vendor = 0x1234,
184 .device = 0x1111,
185 .subvendor = 0x1af4,
186 .subdevice = 0x1100,
187 .driver_data = BOCHS_QEMU_STDVGA,
188 },
189 {
190 .vendor = 0x1234,
191 .device = 0x1111,
192 .subvendor = PCI_ANY_ID,
193 .subdevice = PCI_ANY_ID,
194 .driver_data = BOCHS_UNKNOWN,
195 },
196 { /* end of list */ }
197 };
198
199 static struct pci_driver bochs_pci_driver = {
200 .name = "bochs-drm",
201 .id_table = bochs_pci_tbl,
202 .probe = bochs_pci_probe,
203 .remove = bochs_pci_remove,
204 .driver.pm = &bochs_pm_ops,
205 };
206
207 /* ---------------------------------------------------------------------- */
208 /* module init/exit */
209
bochs_init(void)210 static int __init bochs_init(void)
211 {
212 return drm_pci_init(&bochs_driver, &bochs_pci_driver);
213 }
214
bochs_exit(void)215 static void __exit bochs_exit(void)
216 {
217 drm_pci_exit(&bochs_driver, &bochs_pci_driver);
218 }
219
220 module_init(bochs_init);
221 module_exit(bochs_exit);
222
223 MODULE_DEVICE_TABLE(pci, bochs_pci_tbl);
224 MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
225 MODULE_LICENSE("GPL");
226