1 /*
2  * Copyright 2012 Red Hat
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 
15 #include "mgag200_drv.h"
16 
17 #include <drm/drm_pciids.h>
18 
19 /*
20  * This is the generic driver code. This binds the driver to the drm core,
21  * which then performs further device association and calls our graphics init
22  * functions
23  */
24 int mgag200_modeset = -1;
25 
26 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
27 module_param_named(modeset, mgag200_modeset, int, 0400);
28 
29 static struct drm_driver driver;
30 
31 static const struct pci_device_id pciidlist[] = {
32 	{ PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_A },
33 	{ PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B },
34 	{ PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV },
35 	{ PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB },
36 	{ PCI_VENDOR_ID_MATROX, 0x533, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH },
37 	{ PCI_VENDOR_ID_MATROX, 0x534, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_ER },
38 	{ PCI_VENDOR_ID_MATROX, 0x536, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EW3 },
39 	{0,}
40 };
41 
42 MODULE_DEVICE_TABLE(pci, pciidlist);
43 
44 static void mgag200_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;
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, "mgag200drmfb", primary);
60 	kfree(ap);
61 }
62 
63 
64 static int mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
65 {
66 	mgag200_kick_out_firmware_fb(pdev);
67 
68 	return drm_get_pci_dev(pdev, ent, &driver);
69 }
70 
71 static void mga_pci_remove(struct pci_dev *pdev)
72 {
73 	struct drm_device *dev = pci_get_drvdata(pdev);
74 
75 	drm_put_dev(dev);
76 }
77 
78 static const struct file_operations mgag200_driver_fops = {
79 	.owner = THIS_MODULE,
80 	.open = drm_open,
81 	.release = drm_release,
82 	.unlocked_ioctl = drm_ioctl,
83 	.mmap = mgag200_mmap,
84 	.poll = drm_poll,
85 #ifdef CONFIG_COMPAT
86 	.compat_ioctl = drm_compat_ioctl,
87 #endif
88 	.read = drm_read,
89 };
90 
91 static struct drm_driver driver = {
92 	.driver_features = DRIVER_GEM | DRIVER_MODESET,
93 	.load = mgag200_driver_load,
94 	.unload = mgag200_driver_unload,
95 	.set_busid = drm_pci_set_busid,
96 	.fops = &mgag200_driver_fops,
97 	.name = DRIVER_NAME,
98 	.desc = DRIVER_DESC,
99 	.date = DRIVER_DATE,
100 	.major = DRIVER_MAJOR,
101 	.minor = DRIVER_MINOR,
102 	.patchlevel = DRIVER_PATCHLEVEL,
103 
104 	.gem_free_object = mgag200_gem_free_object,
105 	.dumb_create = mgag200_dumb_create,
106 	.dumb_map_offset = mgag200_dumb_mmap_offset,
107 	.dumb_destroy = drm_gem_dumb_destroy,
108 };
109 
110 static struct pci_driver mgag200_pci_driver = {
111 	.name = DRIVER_NAME,
112 	.id_table = pciidlist,
113 	.probe = mga_pci_probe,
114 	.remove = mga_pci_remove,
115 };
116 
117 static int __init mgag200_init(void)
118 {
119 #ifdef CONFIG_VGA_CONSOLE
120 	if (vgacon_text_force() && mgag200_modeset == -1)
121 		return -EINVAL;
122 #endif
123 
124 	if (mgag200_modeset == 0)
125 		return -EINVAL;
126 	return drm_pci_init(&driver, &mgag200_pci_driver);
127 }
128 
129 static void __exit mgag200_exit(void)
130 {
131 	drm_pci_exit(&driver, &mgag200_pci_driver);
132 }
133 
134 module_init(mgag200_init);
135 module_exit(mgag200_exit);
136 
137 MODULE_AUTHOR(DRIVER_AUTHOR);
138 MODULE_DESCRIPTION(DRIVER_DESC);
139 MODULE_LICENSE("GPL");
140