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
14static bool enable_fbdev = true;
15module_param_named(fbdev, enable_fbdev, bool, 0444);
16MODULE_PARM_DESC(fbdev, "register fbdev device");
17
18/* ---------------------------------------------------------------------- */
19/* drm interface                                                          */
20
21static 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
34static 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
62err:
63	bochs_unload(dev);
64	return ret;
65}
66
67static 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
81static 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
102static 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
119static 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
138static 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
146static 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
162static 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
174static 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
181static 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
199static 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
210static int __init bochs_init(void)
211{
212	return drm_pci_init(&bochs_driver, &bochs_pci_driver);
213}
214
215static void __exit bochs_exit(void)
216{
217	drm_pci_exit(&bochs_driver, &bochs_pci_driver);
218}
219
220module_init(bochs_init);
221module_exit(bochs_exit);
222
223MODULE_DEVICE_TABLE(pci, bochs_pci_tbl);
224MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
225MODULE_LICENSE("GPL");
226