1/*	$NetBSD: sis_drv.c,v 1.4 2021/12/18 23:45:44 riastradh Exp $	*/
2
3/* sis.c -- sis driver -*- linux-c -*-
4 *
5 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
6 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
7 * All Rights Reserved.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice (including the next
17 * paragraph) shall be included in all copies or substantial portions of the
18 * Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
23 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26 * DEALINGS IN THE SOFTWARE.
27 *
28 */
29
30#include <sys/cdefs.h>
31__KERNEL_RCSID(0, "$NetBSD: sis_drv.c,v 1.4 2021/12/18 23:45:44 riastradh Exp $");
32
33#include <linux/module.h>
34#include <linux/pci.h>
35
36#include <drm/drm_drv.h>
37#include <drm/drm_file.h>
38#include <drm/drm_pciids.h>
39#include <drm/sis_drm.h>
40
41#include "sis_drv.h"
42
43static struct pci_device_id pciidlist[] = {
44	sisdrv_PCI_IDS
45};
46
47static int sis_driver_load(struct drm_device *dev, unsigned long chipset)
48{
49	drm_sis_private_t *dev_priv;
50
51	pci_set_master(dev->pdev);
52
53	dev_priv = kzalloc(sizeof(drm_sis_private_t), GFP_KERNEL);
54	if (dev_priv == NULL)
55		return -ENOMEM;
56
57	idr_init(&dev_priv->object_idr);
58	dev->dev_private = (void *)dev_priv;
59	dev_priv->chipset = chipset;
60
61	return 0;
62}
63
64static void sis_driver_unload(struct drm_device *dev)
65{
66	drm_sis_private_t *dev_priv = dev->dev_private;
67
68	idr_destroy(&dev_priv->object_idr);
69
70	kfree(dev_priv);
71}
72
73static const struct file_operations sis_driver_fops = {
74	.owner = THIS_MODULE,
75	.open = drm_open,
76	.release = drm_release,
77	.unlocked_ioctl = drm_ioctl,
78	.mmap = drm_legacy_mmap,
79	.poll = drm_poll,
80	.compat_ioctl = drm_compat_ioctl,
81	.llseek = noop_llseek,
82};
83
84static int sis_driver_open(struct drm_device *dev, struct drm_file *file)
85{
86	struct sis_file_private *file_priv;
87
88	DRM_DEBUG_DRIVER("\n");
89	file_priv = kmalloc(sizeof(*file_priv), GFP_KERNEL);
90	if (!file_priv)
91		return -ENOMEM;
92
93	file->driver_priv = file_priv;
94
95	INIT_LIST_HEAD(&file_priv->obj_list);
96
97	return 0;
98}
99
100static void sis_driver_postclose(struct drm_device *dev, struct drm_file *file)
101{
102	struct sis_file_private *file_priv = file->driver_priv;
103
104	kfree(file_priv);
105}
106
107static struct drm_driver driver = {
108	.driver_features = DRIVER_USE_AGP | DRIVER_LEGACY,
109	.load = sis_driver_load,
110	.unload = sis_driver_unload,
111	.open = sis_driver_open,
112	.preclose = sis_reclaim_buffers_locked,
113	.postclose = sis_driver_postclose,
114	.dma_quiescent = sis_idle,
115	.lastclose = sis_lastclose,
116	.ioctls = sis_ioctls,
117	.fops = &sis_driver_fops,
118	.name = DRIVER_NAME,
119	.desc = DRIVER_DESC,
120	.date = DRIVER_DATE,
121	.major = DRIVER_MAJOR,
122	.minor = DRIVER_MINOR,
123	.patchlevel = DRIVER_PATCHLEVEL,
124};
125
126static struct pci_driver sis_pci_driver = {
127	.name = DRIVER_NAME,
128	.id_table = pciidlist,
129};
130
131static int __init sis_init(void)
132{
133	driver.num_ioctls = sis_max_ioctl;
134	return drm_legacy_pci_init(&driver, &sis_pci_driver);
135}
136
137static void __exit sis_exit(void)
138{
139	drm_legacy_pci_exit(&driver, &sis_pci_driver);
140}
141
142module_init(sis_init);
143module_exit(sis_exit);
144
145MODULE_AUTHOR(DRIVER_AUTHOR);
146MODULE_DESCRIPTION(DRIVER_DESC);
147MODULE_LICENSE("GPL and additional rights");
148