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 	{ PCI_VENDOR_ID_MATROX, 0x538, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH3 },
40 	{0,}
41 };
42 
43 MODULE_DEVICE_TABLE(pci, pciidlist);
44 
45 static void mgag200_kick_out_firmware_fb(struct pci_dev *pdev)
46 {
47 	struct apertures_struct *ap;
48 	bool primary = false;
49 
50 	ap = alloc_apertures(1);
51 	if (!ap)
52 		return;
53 
54 	ap->ranges[0].base = pci_resource_start(pdev, 0);
55 	ap->ranges[0].size = pci_resource_len(pdev, 0);
56 
57 #ifdef CONFIG_X86
58 	primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
59 #endif
60 	drm_fb_helper_remove_conflicting_framebuffers(ap, "mgag200drmfb", primary);
61 	kfree(ap);
62 }
63 
64 
65 static int mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
66 {
67 	mgag200_kick_out_firmware_fb(pdev);
68 
69 	return drm_get_pci_dev(pdev, ent, &driver);
70 }
71 
72 static void mga_pci_remove(struct pci_dev *pdev)
73 {
74 	struct drm_device *dev = pci_get_drvdata(pdev);
75 
76 	drm_put_dev(dev);
77 }
78 
79 static const struct file_operations mgag200_driver_fops = {
80 	.owner = THIS_MODULE,
81 	.open = drm_open,
82 	.release = drm_release,
83 	.unlocked_ioctl = drm_ioctl,
84 	.mmap = mgag200_mmap,
85 	.poll = drm_poll,
86 	.compat_ioctl = drm_compat_ioctl,
87 	.read = drm_read,
88 };
89 
90 static struct drm_driver driver = {
91 	.driver_features = DRIVER_GEM | DRIVER_MODESET,
92 	.load = mgag200_driver_load,
93 	.unload = mgag200_driver_unload,
94 	.set_busid = drm_pci_set_busid,
95 	.fops = &mgag200_driver_fops,
96 	.name = DRIVER_NAME,
97 	.desc = DRIVER_DESC,
98 	.date = DRIVER_DATE,
99 	.major = DRIVER_MAJOR,
100 	.minor = DRIVER_MINOR,
101 	.patchlevel = DRIVER_PATCHLEVEL,
102 
103 	.gem_free_object_unlocked = mgag200_gem_free_object,
104 	.dumb_create = mgag200_dumb_create,
105 	.dumb_map_offset = mgag200_dumb_mmap_offset,
106 	.dumb_destroy = drm_gem_dumb_destroy,
107 };
108 
109 static struct pci_driver mgag200_pci_driver = {
110 	.name = DRIVER_NAME,
111 	.id_table = pciidlist,
112 	.probe = mga_pci_probe,
113 	.remove = mga_pci_remove,
114 };
115 
116 static int __init mgag200_init(void)
117 {
118 	if (vgacon_text_force() && mgag200_modeset == -1)
119 		return -EINVAL;
120 
121 	if (mgag200_modeset == 0)
122 		return -EINVAL;
123 	return drm_pci_init(&driver, &mgag200_pci_driver);
124 }
125 
126 static void __exit mgag200_exit(void)
127 {
128 	drm_pci_exit(&driver, &mgag200_pci_driver);
129 }
130 
131 module_init(mgag200_init);
132 module_exit(mgag200_exit);
133 
134 MODULE_AUTHOR(DRIVER_AUTHOR);
135 MODULE_DESCRIPTION(DRIVER_DESC);
136 MODULE_LICENSE("GPL");
137