sis_drv.c revision 1.1 
1/* sis.c -- sis driver -*- linux-c -*-
2 *
3 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
4 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the next
15 * paragraph) shall be included in all copies or substantial portions of the
16 * Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
21 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
22 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
23 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24 * DEALINGS IN THE SOFTWARE.
25 *
26 */
27
28#include <linux/module.h>
29
30#include <drm/drmP.h>
31#include <drm/sis_drm.h>
32#include "sis_drv.h"
33
34#include <drm/drm_pciids.h>
35
36static struct pci_device_id pciidlist[] = {
37	sisdrv_PCI_IDS
38};
39
40static int sis_driver_load(struct drm_device *dev, unsigned long chipset)
41{
42	drm_sis_private_t *dev_priv;
43
44	pci_set_master(dev->pdev);
45
46	dev_priv = kzalloc(sizeof(drm_sis_private_t), GFP_KERNEL);
47	if (dev_priv == NULL)
48		return -ENOMEM;
49
50	idr_init(&dev_priv->object_idr);
51	dev->dev_private = (void *)dev_priv;
52	dev_priv->chipset = chipset;
53
54	return 0;
55}
56
57static int sis_driver_unload(struct drm_device *dev)
58{
59	drm_sis_private_t *dev_priv = dev->dev_private;
60
61	idr_remove_all(&dev_priv->object_idr);
62	idr_destroy(&dev_priv->object_idr);
63
64	kfree(dev_priv);
65
66	return 0;
67}
68
69static const struct file_operations sis_driver_fops = {
70	.owner = THIS_MODULE,
71	.open = drm_open,
72	.release = drm_release,
73	.unlocked_ioctl = drm_ioctl,
74	.mmap = drm_mmap,
75	.poll = drm_poll,
76	.fasync = drm_fasync,
77#ifdef CONFIG_COMPAT
78	.compat_ioctl = drm_compat_ioctl,
79#endif
80	.llseek = noop_llseek,
81};
82
83static int sis_driver_open(struct drm_device *dev, struct drm_file *file)
84{
85	struct sis_file_private *file_priv;
86
87	DRM_DEBUG_DRIVER("\n");
88	file_priv = kmalloc(sizeof(*file_priv), GFP_KERNEL);
89	if (!file_priv)
90		return -ENOMEM;
91
92	file->driver_priv = file_priv;
93
94	INIT_LIST_HEAD(&file_priv->obj_list);
95
96	return 0;
97}
98
99void sis_driver_postclose(struct drm_device *dev, struct drm_file *file)
100{
101	struct sis_file_private *file_priv = file->driver_priv;
102
103	kfree(file_priv);
104}
105
106static struct drm_driver driver = {
107	.driver_features = DRIVER_USE_AGP | DRIVER_USE_MTRR,
108	.load = sis_driver_load,
109	.unload = sis_driver_unload,
110	.open = sis_driver_open,
111	.preclose = sis_reclaim_buffers_locked,
112	.postclose = sis_driver_postclose,
113	.dma_quiescent = sis_idle,
114	.lastclose = sis_lastclose,
115	.ioctls = sis_ioctls,
116	.fops = &sis_driver_fops,
117	.name = DRIVER_NAME,
118	.desc = DRIVER_DESC,
119	.date = DRIVER_DATE,
120	.major = DRIVER_MAJOR,
121	.minor = DRIVER_MINOR,
122	.patchlevel = DRIVER_PATCHLEVEL,
123};
124
125static struct pci_driver sis_pci_driver = {
126	.name = DRIVER_NAME,
127	.id_table = pciidlist,
128};
129
130static int __init sis_init(void)
131{
132	driver.num_ioctls = sis_max_ioctl;
133	return drm_pci_init(&driver, &sis_pci_driver);
134}
135
136static void __exit sis_exit(void)
137{
138	drm_pci_exit(&driver, &sis_pci_driver);
139}
140
141module_init(sis_init);
142module_exit(sis_exit);
143
144MODULE_AUTHOR(DRIVER_AUTHOR);
145MODULE_DESCRIPTION(DRIVER_DESC);
146MODULE_LICENSE("GPL and additional rights");
147