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 int cirrus_bpp = 24;
20
21 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
22 module_param_named(modeset, cirrus_modeset, int, 0400);
23 MODULE_PARM_DESC(bpp, "Max bits-per-pixel (default:24)");
24 module_param_named(bpp, cirrus_bpp, int, 0400);
25
26 /*
27 * This is the generic driver code. This binds the driver to the drm core,
28 * which then performs further device association and calls our graphics init
29 * functions
30 */
31
32 static struct drm_driver driver;
33
34 /* only bind to the cirrus chip in qemu */
35 static const struct pci_device_id pciidlist[] = {
36 { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, 0x1af4, 0x1100, 0,
37 0, 0 },
38 { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, PCI_VENDOR_ID_XEN,
39 0x0001, 0, 0, 0 },
40 {0,}
41 };
42
43
cirrus_kick_out_firmware_fb(struct pci_dev * pdev)44 static int cirrus_kick_out_firmware_fb(struct pci_dev *pdev)
45 {
46 struct apertures_struct *ap;
47 bool primary = false;
48
49 ap = alloc_apertures(1);
50 if (!ap)
51 return -ENOMEM;
52
53 ap->ranges[0].base = pci_resource_start(pdev, 0);
54 ap->ranges[0].size = pci_resource_len(pdev, 0);
55
56 #ifdef CONFIG_X86
57 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
58 #endif
59 remove_conflicting_framebuffers(ap, "cirrusdrmfb", primary);
60 kfree(ap);
61
62 return 0;
63 }
64
cirrus_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)65 static int cirrus_pci_probe(struct pci_dev *pdev,
66 const struct pci_device_id *ent)
67 {
68 int ret;
69
70 ret = cirrus_kick_out_firmware_fb(pdev);
71 if (ret)
72 return ret;
73
74 return drm_get_pci_dev(pdev, ent, &driver);
75 }
76
cirrus_pci_remove(struct pci_dev * pdev)77 static void cirrus_pci_remove(struct pci_dev *pdev)
78 {
79 struct drm_device *dev = pci_get_drvdata(pdev);
80
81 drm_put_dev(dev);
82 }
83
84 #ifdef CONFIG_PM_SLEEP
cirrus_pm_suspend(struct device * dev)85 static int cirrus_pm_suspend(struct device *dev)
86 {
87 struct pci_dev *pdev = to_pci_dev(dev);
88 struct drm_device *drm_dev = pci_get_drvdata(pdev);
89 struct cirrus_device *cdev = drm_dev->dev_private;
90
91 drm_kms_helper_poll_disable(drm_dev);
92
93 if (cdev->mode_info.gfbdev) {
94 console_lock();
95 drm_fb_helper_set_suspend(&cdev->mode_info.gfbdev->helper, 1);
96 console_unlock();
97 }
98
99 return 0;
100 }
101
cirrus_pm_resume(struct device * dev)102 static int cirrus_pm_resume(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 cirrus_device *cdev = drm_dev->dev_private;
107
108 drm_helper_resume_force_mode(drm_dev);
109
110 if (cdev->mode_info.gfbdev) {
111 console_lock();
112 drm_fb_helper_set_suspend(&cdev->mode_info.gfbdev->helper, 0);
113 console_unlock();
114 }
115
116 drm_kms_helper_poll_enable(drm_dev);
117 return 0;
118 }
119 #endif
120
121 static const struct file_operations cirrus_driver_fops = {
122 .owner = THIS_MODULE,
123 .open = drm_open,
124 .release = drm_release,
125 .unlocked_ioctl = drm_ioctl,
126 .mmap = cirrus_mmap,
127 .poll = drm_poll,
128 #ifdef CONFIG_COMPAT
129 .compat_ioctl = drm_compat_ioctl,
130 #endif
131 };
132 static struct drm_driver driver = {
133 .driver_features = DRIVER_MODESET | DRIVER_GEM,
134 .load = cirrus_driver_load,
135 .unload = cirrus_driver_unload,
136 .set_busid = drm_pci_set_busid,
137 .fops = &cirrus_driver_fops,
138 .name = DRIVER_NAME,
139 .desc = DRIVER_DESC,
140 .date = DRIVER_DATE,
141 .major = DRIVER_MAJOR,
142 .minor = DRIVER_MINOR,
143 .patchlevel = DRIVER_PATCHLEVEL,
144 .gem_free_object = cirrus_gem_free_object,
145 .dumb_create = cirrus_dumb_create,
146 .dumb_map_offset = cirrus_dumb_mmap_offset,
147 .dumb_destroy = drm_gem_dumb_destroy,
148 };
149
150 static const struct dev_pm_ops cirrus_pm_ops = {
151 SET_SYSTEM_SLEEP_PM_OPS(cirrus_pm_suspend,
152 cirrus_pm_resume)
153 };
154
155 static struct pci_driver cirrus_pci_driver = {
156 .name = DRIVER_NAME,
157 .id_table = pciidlist,
158 .probe = cirrus_pci_probe,
159 .remove = cirrus_pci_remove,
160 .driver.pm = &cirrus_pm_ops,
161 };
162
cirrus_init(void)163 static int __init cirrus_init(void)
164 {
165 #ifdef CONFIG_VGA_CONSOLE
166 if (vgacon_text_force() && cirrus_modeset == -1)
167 return -EINVAL;
168 #endif
169
170 if (cirrus_modeset == 0)
171 return -EINVAL;
172 return drm_pci_init(&driver, &cirrus_pci_driver);
173 }
174
cirrus_exit(void)175 static void __exit cirrus_exit(void)
176 {
177 drm_pci_exit(&driver, &cirrus_pci_driver);
178 }
179
180 module_init(cirrus_init);
181 module_exit(cirrus_exit);
182
183 MODULE_DEVICE_TABLE(pci, pciidlist);
184 MODULE_AUTHOR(DRIVER_AUTHOR);
185 MODULE_DESCRIPTION(DRIVER_DESC);
186 MODULE_LICENSE("GPL");
187