This source file includes following definitions.
- bochs_unload
- bochs_load
- bochs_pm_suspend
- bochs_pm_resume
- bochs_pci_probe
- bochs_pci_remove
- bochs_init
- bochs_exit
1
2
3
4
5 #include <linux/module.h>
6 #include <linux/pci.h>
7
8 #include <drm/drm_drv.h>
9 #include <drm/drm_atomic_helper.h>
10
11 #include "bochs.h"
12
13 static int bochs_modeset = -1;
14 module_param_named(modeset, bochs_modeset, int, 0444);
15 MODULE_PARM_DESC(modeset, "enable/disable kernel modesetting");
16
17
18
19
20 static void bochs_unload(struct drm_device *dev)
21 {
22 struct bochs_device *bochs = dev->dev_private;
23
24 bochs_kms_fini(bochs);
25 bochs_mm_fini(bochs);
26 bochs_hw_fini(dev);
27 kfree(bochs);
28 dev->dev_private = NULL;
29 }
30
31 static int bochs_load(struct drm_device *dev)
32 {
33 struct bochs_device *bochs;
34 int ret;
35
36 bochs = kzalloc(sizeof(*bochs), GFP_KERNEL);
37 if (bochs == NULL)
38 return -ENOMEM;
39 dev->dev_private = bochs;
40 bochs->dev = dev;
41
42 ret = bochs_hw_init(dev);
43 if (ret)
44 goto err;
45
46 ret = bochs_mm_init(bochs);
47 if (ret)
48 goto err;
49
50 ret = bochs_kms_init(bochs);
51 if (ret)
52 goto err;
53
54 return 0;
55
56 err:
57 bochs_unload(dev);
58 return ret;
59 }
60
61 static const struct file_operations bochs_fops = {
62 .owner = THIS_MODULE,
63 DRM_VRAM_MM_FILE_OPERATIONS
64 };
65
66 static struct drm_driver bochs_driver = {
67 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
68 .fops = &bochs_fops,
69 .name = "bochs-drm",
70 .desc = "bochs dispi vga interface (qemu stdvga)",
71 .date = "20130925",
72 .major = 1,
73 .minor = 0,
74 DRM_GEM_VRAM_DRIVER,
75 };
76
77
78
79
80 #ifdef CONFIG_PM_SLEEP
81 static int bochs_pm_suspend(struct device *dev)
82 {
83 struct drm_device *drm_dev = dev_get_drvdata(dev);
84
85 return drm_mode_config_helper_suspend(drm_dev);
86 }
87
88 static int bochs_pm_resume(struct device *dev)
89 {
90 struct drm_device *drm_dev = dev_get_drvdata(dev);
91
92 return drm_mode_config_helper_resume(drm_dev);
93 }
94 #endif
95
96 static const struct dev_pm_ops bochs_pm_ops = {
97 SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
98 bochs_pm_resume)
99 };
100
101
102
103
104 static int bochs_pci_probe(struct pci_dev *pdev,
105 const struct pci_device_id *ent)
106 {
107 struct drm_device *dev;
108 unsigned long fbsize;
109 int ret;
110
111 fbsize = pci_resource_len(pdev, 0);
112 if (fbsize < 4 * 1024 * 1024) {
113 DRM_ERROR("less than 4 MB video memory, ignoring device\n");
114 return -ENOMEM;
115 }
116
117 ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, 0, "bochsdrmfb");
118 if (ret)
119 return ret;
120
121 dev = drm_dev_alloc(&bochs_driver, &pdev->dev);
122 if (IS_ERR(dev))
123 return PTR_ERR(dev);
124
125 ret = pci_enable_device(pdev);
126 if (ret)
127 goto err_free_dev;
128
129 dev->pdev = pdev;
130 pci_set_drvdata(pdev, dev);
131
132 ret = bochs_load(dev);
133 if (ret)
134 goto err_free_dev;
135
136 ret = drm_dev_register(dev, 0);
137 if (ret)
138 goto err_unload;
139
140 drm_fbdev_generic_setup(dev, 32);
141 return ret;
142
143 err_unload:
144 bochs_unload(dev);
145 err_free_dev:
146 drm_dev_put(dev);
147 return ret;
148 }
149
150 static void bochs_pci_remove(struct pci_dev *pdev)
151 {
152 struct drm_device *dev = pci_get_drvdata(pdev);
153
154 drm_atomic_helper_shutdown(dev);
155 drm_dev_unregister(dev);
156 bochs_unload(dev);
157 drm_dev_put(dev);
158 }
159
160 static const struct pci_device_id bochs_pci_tbl[] = {
161 {
162 .vendor = 0x1234,
163 .device = 0x1111,
164 .subvendor = PCI_SUBVENDOR_ID_REDHAT_QUMRANET,
165 .subdevice = PCI_SUBDEVICE_ID_QEMU,
166 .driver_data = BOCHS_QEMU_STDVGA,
167 },
168 {
169 .vendor = 0x1234,
170 .device = 0x1111,
171 .subvendor = PCI_ANY_ID,
172 .subdevice = PCI_ANY_ID,
173 .driver_data = BOCHS_UNKNOWN,
174 },
175 { }
176 };
177
178 static struct pci_driver bochs_pci_driver = {
179 .name = "bochs-drm",
180 .id_table = bochs_pci_tbl,
181 .probe = bochs_pci_probe,
182 .remove = bochs_pci_remove,
183 .driver.pm = &bochs_pm_ops,
184 };
185
186
187
188
189 static int __init bochs_init(void)
190 {
191 if (vgacon_text_force() && bochs_modeset == -1)
192 return -EINVAL;
193
194 if (bochs_modeset == 0)
195 return -EINVAL;
196
197 return pci_register_driver(&bochs_pci_driver);
198 }
199
200 static void __exit bochs_exit(void)
201 {
202 pci_unregister_driver(&bochs_pci_driver);
203 }
204
205 module_init(bochs_init);
206 module_exit(bochs_exit);
207
208 MODULE_DEVICE_TABLE(pci, bochs_pci_tbl);
209 MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
210 MODULE_LICENSE("GPL");