1 /*
2 * Copyright 2012 Red Hat <mjg@redhat.com>
3 *
4 * This file is subject to the terms and conditions of the GNU General
5 * Public License version 2. See the file COPYING in the main
6 * directory of this archive for more details.
7 *
8 * Authors: Matthew Garrett
9 * Dave Airlie
10 */
11 #include <linux/module.h>
12 #include <linux/console.h>
13 #include <drm/drmP.h>
14 #include <drm/drm_crtc_helper.h>
15
16 #include "cirrus_drv.h"
17
18 int cirrus_modeset = -1;
19
20 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
21 module_param_named(modeset, cirrus_modeset, int, 0400);
22
23 /*
24 * This is the generic driver code. This binds the driver to the drm core,
25 * which then performs further device association and calls our graphics init
26 * functions
27 */
28
29 static struct drm_driver driver;
30
31 /* only bind to the cirrus chip in qemu */
32 static const struct pci_device_id pciidlist[] = {
33 { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, 0x1af4, 0x1100, 0,
34 0, 0 },
35 { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, PCI_VENDOR_ID_XEN,
36 0x0001, 0, 0, 0 },
37 {0,}
38 };
39
40
cirrus_kick_out_firmware_fb(struct pci_dev * pdev)41 static int cirrus_kick_out_firmware_fb(struct pci_dev *pdev)
42 {
43 struct apertures_struct *ap;
44 bool primary = false;
45
46 ap = alloc_apertures(1);
47 if (!ap)
48 return -ENOMEM;
49
50 ap->ranges[0].base = pci_resource_start(pdev, 0);
51 ap->ranges[0].size = pci_resource_len(pdev, 0);
52
53 #ifdef CONFIG_X86
54 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
55 #endif
56 remove_conflicting_framebuffers(ap, "cirrusdrmfb", primary);
57 kfree(ap);
58
59 return 0;
60 }
61
cirrus_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)62 static int cirrus_pci_probe(struct pci_dev *pdev,
63 const struct pci_device_id *ent)
64 {
65 int ret;
66
67 ret = cirrus_kick_out_firmware_fb(pdev);
68 if (ret)
69 return ret;
70
71 return drm_get_pci_dev(pdev, ent, &driver);
72 }
73
cirrus_pci_remove(struct pci_dev * pdev)74 static void cirrus_pci_remove(struct pci_dev *pdev)
75 {
76 struct drm_device *dev = pci_get_drvdata(pdev);
77
78 drm_put_dev(dev);
79 }
80
81 #ifdef CONFIG_PM_SLEEP
cirrus_pm_suspend(struct device * dev)82 static int cirrus_pm_suspend(struct device *dev)
83 {
84 struct pci_dev *pdev = to_pci_dev(dev);
85 struct drm_device *drm_dev = pci_get_drvdata(pdev);
86 struct cirrus_device *cdev = drm_dev->dev_private;
87
88 drm_kms_helper_poll_disable(drm_dev);
89
90 if (cdev->mode_info.gfbdev) {
91 console_lock();
92 fb_set_suspend(cdev->mode_info.gfbdev->helper.fbdev, 1);
93 console_unlock();
94 }
95
96 return 0;
97 }
98
cirrus_pm_resume(struct device * dev)99 static int cirrus_pm_resume(struct device *dev)
100 {
101 struct pci_dev *pdev = to_pci_dev(dev);
102 struct drm_device *drm_dev = pci_get_drvdata(pdev);
103 struct cirrus_device *cdev = drm_dev->dev_private;
104
105 drm_helper_resume_force_mode(drm_dev);
106
107 if (cdev->mode_info.gfbdev) {
108 console_lock();
109 fb_set_suspend(cdev->mode_info.gfbdev->helper.fbdev, 0);
110 console_unlock();
111 }
112
113 drm_kms_helper_poll_enable(drm_dev);
114 return 0;
115 }
116 #endif
117
118 static const struct file_operations cirrus_driver_fops = {
119 .owner = THIS_MODULE,
120 .open = drm_open,
121 .release = drm_release,
122 .unlocked_ioctl = drm_ioctl,
123 .mmap = cirrus_mmap,
124 .poll = drm_poll,
125 #ifdef CONFIG_COMPAT
126 .compat_ioctl = drm_compat_ioctl,
127 #endif
128 };
129 static struct drm_driver driver = {
130 .driver_features = DRIVER_MODESET | DRIVER_GEM,
131 .load = cirrus_driver_load,
132 .unload = cirrus_driver_unload,
133 .set_busid = drm_pci_set_busid,
134 .fops = &cirrus_driver_fops,
135 .name = DRIVER_NAME,
136 .desc = DRIVER_DESC,
137 .date = DRIVER_DATE,
138 .major = DRIVER_MAJOR,
139 .minor = DRIVER_MINOR,
140 .patchlevel = DRIVER_PATCHLEVEL,
141 .gem_free_object = cirrus_gem_free_object,
142 .dumb_create = cirrus_dumb_create,
143 .dumb_map_offset = cirrus_dumb_mmap_offset,
144 .dumb_destroy = drm_gem_dumb_destroy,
145 };
146
147 static const struct dev_pm_ops cirrus_pm_ops = {
148 SET_SYSTEM_SLEEP_PM_OPS(cirrus_pm_suspend,
149 cirrus_pm_resume)
150 };
151
152 static struct pci_driver cirrus_pci_driver = {
153 .name = DRIVER_NAME,
154 .id_table = pciidlist,
155 .probe = cirrus_pci_probe,
156 .remove = cirrus_pci_remove,
157 .driver.pm = &cirrus_pm_ops,
158 };
159
cirrus_init(void)160 static int __init cirrus_init(void)
161 {
162 #ifdef CONFIG_VGA_CONSOLE
163 if (vgacon_text_force() && cirrus_modeset == -1)
164 return -EINVAL;
165 #endif
166
167 if (cirrus_modeset == 0)
168 return -EINVAL;
169 return drm_pci_init(&driver, &cirrus_pci_driver);
170 }
171
cirrus_exit(void)172 static void __exit cirrus_exit(void)
173 {
174 drm_pci_exit(&driver, &cirrus_pci_driver);
175 }
176
177 module_init(cirrus_init);
178 module_exit(cirrus_exit);
179
180 MODULE_DEVICE_TABLE(pci, pciidlist);
181 MODULE_AUTHOR(DRIVER_AUTHOR);
182 MODULE_DESCRIPTION(DRIVER_DESC);
183 MODULE_LICENSE("GPL");
184