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1// SPDX-License-Identifier: GPL-2.0-or-later
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
13static int bochs_modeset = -1;
14module_param_named(modeset, bochs_modeset, int, 0444);
15MODULE_PARM_DESC(modeset, "enable/disable kernel modesetting");
16
17/* ---------------------------------------------------------------------- */
18/* drm interface */
19
20static 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
31static 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
56err:
57 bochs_unload(dev);
58 return ret;
59}
60
61static const struct file_operations bochs_fops = {
62 .owner = THIS_MODULE,
63 DRM_VRAM_MM_FILE_OPERATIONS
64};
65
66static 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/* pm interface */
79
80#ifdef CONFIG_PM_SLEEP
81static 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
88static 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
96static 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/* pci interface */
103
104static 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
143err_unload:
144 bochs_unload(dev);
145err_free_dev:
146 drm_dev_put(dev);
147 return ret;
148}
149
150static 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
160static 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 { /* end of list */ }
176};
177
178static 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/* module init/exit */
188
189static 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
200static void __exit bochs_exit(void)
201{
202 pci_unregister_driver(&bochs_pci_driver);
203}
204
205module_init(bochs_init);
206module_exit(bochs_exit);
207
208MODULE_DEVICE_TABLE(pci, bochs_pci_tbl);
209MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
210MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0-or-later
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#include <drm/drm_managed.h>
11
12#include "bochs.h"
13
14static int bochs_modeset = -1;
15module_param_named(modeset, bochs_modeset, int, 0444);
16MODULE_PARM_DESC(modeset, "enable/disable kernel modesetting");
17
18/* ---------------------------------------------------------------------- */
19/* drm interface */
20
21static void bochs_unload(struct drm_device *dev)
22{
23 struct bochs_device *bochs = dev->dev_private;
24
25 bochs_mm_fini(bochs);
26}
27
28static int bochs_load(struct drm_device *dev)
29{
30 struct bochs_device *bochs;
31 int ret;
32
33 bochs = drmm_kzalloc(dev, sizeof(*bochs), GFP_KERNEL);
34 if (bochs == NULL)
35 return -ENOMEM;
36 dev->dev_private = bochs;
37 bochs->dev = dev;
38
39 ret = bochs_hw_init(dev);
40 if (ret)
41 goto err;
42
43 ret = bochs_mm_init(bochs);
44 if (ret)
45 goto err;
46
47 ret = bochs_kms_init(bochs);
48 if (ret)
49 goto err;
50
51 return 0;
52
53err:
54 bochs_unload(dev);
55 return ret;
56}
57
58DEFINE_DRM_GEM_FOPS(bochs_fops);
59
60static struct drm_driver bochs_driver = {
61 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
62 .fops = &bochs_fops,
63 .name = "bochs-drm",
64 .desc = "bochs dispi vga interface (qemu stdvga)",
65 .date = "20130925",
66 .major = 1,
67 .minor = 0,
68 DRM_GEM_VRAM_DRIVER,
69 .release = bochs_unload,
70};
71
72/* ---------------------------------------------------------------------- */
73/* pm interface */
74
75#ifdef CONFIG_PM_SLEEP
76static int bochs_pm_suspend(struct device *dev)
77{
78 struct drm_device *drm_dev = dev_get_drvdata(dev);
79
80 return drm_mode_config_helper_suspend(drm_dev);
81}
82
83static int bochs_pm_resume(struct device *dev)
84{
85 struct drm_device *drm_dev = dev_get_drvdata(dev);
86
87 return drm_mode_config_helper_resume(drm_dev);
88}
89#endif
90
91static const struct dev_pm_ops bochs_pm_ops = {
92 SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
93 bochs_pm_resume)
94};
95
96/* ---------------------------------------------------------------------- */
97/* pci interface */
98
99static int bochs_pci_probe(struct pci_dev *pdev,
100 const struct pci_device_id *ent)
101{
102 struct drm_device *dev;
103 unsigned long fbsize;
104 int ret;
105
106 fbsize = pci_resource_len(pdev, 0);
107 if (fbsize < 4 * 1024 * 1024) {
108 DRM_ERROR("less than 4 MB video memory, ignoring device\n");
109 return -ENOMEM;
110 }
111
112 ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "bochsdrmfb");
113 if (ret)
114 return ret;
115
116 dev = drm_dev_alloc(&bochs_driver, &pdev->dev);
117 if (IS_ERR(dev))
118 return PTR_ERR(dev);
119
120 ret = pci_enable_device(pdev);
121 if (ret)
122 goto err_free_dev;
123
124 dev->pdev = pdev;
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 { /* end of list */ }
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/* module init/exit */
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");