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