1 /* mga_drv.c -- Matrox G200/G400 driver -*- linux-c -*-
2 * Created: Mon Dec 13 01:56:22 1999 by jhartmann@precisioninsight.com
3 *
4 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
6 * All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
17 * Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 * OTHER DEALINGS IN THE SOFTWARE.
26 *
27 * Authors:
28 * Rickard E. (Rik) Faith <faith@valinux.com>
29 * Gareth Hughes <gareth@valinux.com>
30 */
31
32 #include <linux/module.h>
33
34 #include <drm/drmP.h>
35 #include <drm/mga_drm.h>
36 #include "mga_drv.h"
37
38 #include <drm/drm_pciids.h>
39
40 static int mga_driver_device_is_agp(struct drm_device *dev);
41
42 static struct pci_device_id pciidlist[] = {
43 mga_PCI_IDS
44 };
45
46 static const struct file_operations mga_driver_fops = {
47 .owner = THIS_MODULE,
48 .open = drm_open,
49 .release = drm_release,
50 .unlocked_ioctl = drm_ioctl,
51 .mmap = drm_mmap,
52 .poll = drm_poll,
53 .fasync = drm_fasync,
54 #ifdef CONFIG_COMPAT
55 .compat_ioctl = mga_compat_ioctl,
56 #endif
57 .llseek = noop_llseek,
58 };
59
60 static struct drm_driver driver = {
61 .driver_features =
62 DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA |
63 DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
64 .dev_priv_size = sizeof(drm_mga_buf_priv_t),
65 .load = mga_driver_load,
66 .unload = mga_driver_unload,
67 .lastclose = mga_driver_lastclose,
68 .dma_quiescent = mga_driver_dma_quiescent,
69 .device_is_agp = mga_driver_device_is_agp,
70 .get_vblank_counter = mga_get_vblank_counter,
71 .enable_vblank = mga_enable_vblank,
72 .disable_vblank = mga_disable_vblank,
73 .irq_preinstall = mga_driver_irq_preinstall,
74 .irq_postinstall = mga_driver_irq_postinstall,
75 .irq_uninstall = mga_driver_irq_uninstall,
76 .irq_handler = mga_driver_irq_handler,
77 .ioctls = mga_ioctls,
78 .dma_ioctl = mga_dma_buffers,
79 .fops = &mga_driver_fops,
80 .name = DRIVER_NAME,
81 .desc = DRIVER_DESC,
82 .date = DRIVER_DATE,
83 .major = DRIVER_MAJOR,
84 .minor = DRIVER_MINOR,
85 .patchlevel = DRIVER_PATCHLEVEL,
86 };
87
88 static struct pci_driver mga_pci_driver = {
89 .name = DRIVER_NAME,
90 .id_table = pciidlist,
91 };
92
mga_init(void)93 static int __init mga_init(void)
94 {
95 driver.num_ioctls = mga_max_ioctl;
96 return drm_pci_init(&driver, &mga_pci_driver);
97 }
98
mga_exit(void)99 static void __exit mga_exit(void)
100 {
101 drm_pci_exit(&driver, &mga_pci_driver);
102 }
103
104 module_init(mga_init);
105 module_exit(mga_exit);
106
107 MODULE_AUTHOR(DRIVER_AUTHOR);
108 MODULE_DESCRIPTION(DRIVER_DESC);
109 MODULE_LICENSE("GPL and additional rights");
110
111 /**
112 * Determine if the device really is AGP or not.
113 *
114 * In addition to the usual tests performed by \c drm_device_is_agp, this
115 * function detects PCI G450 cards that appear to the system exactly like
116 * AGP G450 cards.
117 *
118 * \param dev The device to be tested.
119 *
120 * \returns
121 * If the device is a PCI G450, zero is returned. Otherwise 2 is returned.
122 */
mga_driver_device_is_agp(struct drm_device * dev)123 static int mga_driver_device_is_agp(struct drm_device *dev)
124 {
125 const struct pci_dev *const pdev = dev->pdev;
126
127 /* There are PCI versions of the G450. These cards have the
128 * same PCI ID as the AGP G450, but have an additional PCI-to-PCI
129 * bridge chip. We detect these cards, which are not currently
130 * supported by this driver, by looking at the device ID of the
131 * bus the "card" is on. If vendor is 0x3388 (Hint Corp) and the
132 * device is 0x0021 (HB6 Universal PCI-PCI bridge), we reject the
133 * device.
134 */
135
136 if ((pdev->device == 0x0525) && pdev->bus->self
137 && (pdev->bus->self->vendor == 0x3388)
138 && (pdev->bus->self->device == 0x0021)) {
139 return 0;
140 }
141
142 return 2;
143 }
144