source: sbliveos2/trunk/sblive/emu10k1-joy.c@ 195

Last change on this file since 195 was 142, checked in by ktk, 25 years ago

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1/* $Id: emu10k1-joy.c 142 2000-04-23 14:55:46Z ktk $ */
2
3
4/*
5 **********************************************************************
6 * emu10k1-joy.c - Creative EMU10K1 Joystick port driver
7 * Copyright 2000 Rui Sousa.
8 *
9 **********************************************************************
10 *
11 * Date Author Summary of changes
12 * ---- ------ ------------------
13 * April 1, 2000 Rui Sousa initial version
14 *
15 **********************************************************************
16 *
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version.
21 *
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 *
27 * You should have received a copy of the GNU General Public
28 * License along with this program; if not, write to the Free
29 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
30 * USA.
31 *
32 **********************************************************************/
33
34#include <linux/module.h>
35#include <linux/init.h>
36#include <linux/pci.h>
37#include <linux/malloc.h>
38#include <linux/ioport.h>
39#include <linux/list.h>
40
41#include <emu_wrapper.h>
42
43#define DRIVER_VERSION "0.1"
44
45#ifndef PCI_VENDOR_ID_CREATIVE
46#define PCI_VENDOR_ID_CREATIVE 0x1102
47#endif
48
49#ifndef PCI_DEVICE_ID_CREATIVE_EMU10K1_JOYSTICK
50#define PCI_DEVICE_ID_CREATIVE_EMU10K1_JOYSTICK 0x7002
51#endif
52
53#define EMU10K1_JOYSTICK_EXTENT 0x8 /* 8 byte I/O space */
54
55#define NR_DEV 5
56
57static int io[NR_DEV] = { 0, };
58
59enum {
60 EMU10K1_JOYSTICK = 0
61};
62
63static char *card_names[] = {
64 "EMU10K1 Joystick Port"
65};
66
67static struct pci_device_id emu10k1_joy_pci_tbl[] __devinitdata = {
68 {PCI_VENDOR_ID_CREATIVE, PCI_DEVICE_ID_CREATIVE_EMU10K1_JOYSTICK,
69 PCI_ANY_ID, PCI_ANY_ID, 0, 0, EMU10K1_JOYSTICK},
70 {0,}
71};
72
73MODULE_DEVICE_TABLE(pci, emu10k1_joy_pci_tbl);
74
75struct emu10k1_joy_card {
76 struct list_head list;
77
78 struct pci_dev *pci_dev;
79 unsigned long iobase;
80 int addr_changed;
81};
82
83static LIST_HEAD(emu10k1_joy_devs);
84static unsigned int devindex = 0;
85
86/* Driver initialization routine */
87static int __devinit emu10k1_joy_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id)
88{
89 struct emu10k1_joy_card *card;
90 u8 chiprev;
91
92 if ((card = kmalloc(sizeof(struct emu10k1_joy_card), GFP_KERNEL)) == NULL) {
93 printk(KERN_ERR "emu10k1-joy: out of memory\n");
94 return -ENOMEM;
95 }
96 memset(card, 0, sizeof(struct emu10k1_joy_card));
97
98#if LINUX_VERSION_CODE > 0x020320
99 if (pci_enable_device(pci_dev)) {
100 printk(KERN_ERR "emu10k1-joy: couldn't enable device\n");
101 kfree(card);
102 return -ENODEV;
103 }
104
105 card->iobase = pci_dev->resource[0].start;
106
107 if (request_region(card->iobase, EMU10K1_JOYSTICK_EXTENT, card_names[pci_id->driver_data])
108 == NULL) {
109 printk(KERN_ERR "emu10k1-joy: %s IO space in use\n",
110 card_names[pci_id->driver_data]);
111 kfree(card);
112 return -ENODEV;
113 }
114
115 pci_dev->driver_data = card;
116#else
117 card->iobase = pci_dev->base_address[0] & PCI_BASE_ADDRESS_IO_MASK;
118
119 if (check_region(card->iobase, EMU10K1_JOYSTICK_EXTENT)) {
120 printk(KERN_ERR "emu10k1-joy: IO space in use\n");
121 kfree(card);
122 return -ENODEV;
123 }
124
125 request_region(card->iobase, EMU10K1_JOYSTICK_EXTENT, card_names[pci_id->driver_data]);
126#endif
127
128 pci_read_config_byte(pci_dev, PCI_REVISION_ID, &chiprev);
129
130 printk(KERN_INFO "emu10k1-joy: %s rev %d found at IO 0x%04lx\n",
131 card_names[pci_id->driver_data], chiprev, card->iobase);
132
133 if (io[devindex]) {
134 if ((io[devindex] & ~0x18) != 0x200) {
135 printk(KERN_ERR "emu10k1-joy: invalid io value\n");
136 release_region(card->iobase, EMU10K1_JOYSTICK_EXTENT);
137 kfree(card);
138 return -ENODEV;
139 }
140
141 card->addr_changed = 1;
142 pci_write_config_dword(pci_dev, PCI_BASE_ADDRESS_0, io[devindex]);
143 printk(KERN_INFO "emu10k1-joy: IO ports mirrored at 0x%03x\n", io[devindex]);
144 }
145
146 list_add(&card->list, &emu10k1_joy_devs);
147 devindex++;
148
149 return 0;
150}
151
152static void __devexit emu10k1_joy_remove(struct pci_dev *pci_dev)
153{
154
155#if LINUX_VERSION_CODE > 0x020320
156 struct emu10k1_joy_card *card = pci_dev->driver_data;
157#else
158 struct emu10k1_joy_card *card =
159
160 list_entry(emu10k1_joy_devs.next, struct emu10k1_joy_card, list);
161#endif
162 if(card->addr_changed)
163 pci_write_config_dword(pci_dev, PCI_BASE_ADDRESS_0, card->iobase);
164
165 release_region(card->iobase, EMU10K1_JOYSTICK_EXTENT);
166
167 list_del(&card->list);
168 kfree(card);
169 return;
170}
171
172MODULE_PARM(io, "1-" __MODULE_STRING(NR_DEV) "i");
173MODULE_PARM_DESC(io, "sets joystick port address");
174MODULE_AUTHOR("Rui Sousa (Email to: emu10k1-devel@opensource.creative.com)");
175MODULE_DESCRIPTION("Creative EMU10K1 PCI Joystick Port v" DRIVER_VERSION
176 "\nCopyright (C) 2000 Rui Sousa");
177
178static struct pci_driver emu10k1_joy_pci_driver = {
179 name:"emu10k1 joystick",
180 id_table:emu10k1_joy_pci_tbl,
181 probe:emu10k1_joy_probe,
182 remove:emu10k1_joy_remove,
183};
184
185#if LINUX_VERSION_CODE > 0x020320
186static int __init emu10k1_joy_init_module(void)
187{
188 printk(KERN_INFO "Creative EMU10K1 PCI Joystick Port, version " DRIVER_VERSION ", " __TIME__
189 " " __DATE__ "\n");
190
191 return pci_module_init(&emu10k1_joy_pci_driver);
192}
193
194static void __exit emu10k1_joy_cleanup_module(void)
195{
196 pci_unregister_driver(&emu10k1_joy_pci_driver);
197 return;
198}
199
200#else
201static int __init emu10k1_joy_init_module(void)
202{
203 struct pci_dev *dev = NULL;
204 const struct pci_device_id *pci_id = emu10k1_joy_pci_driver.id_table;
205
206 printk(KERN_INFO "Creative EMU10K1 PCI Joystick Port, version " DRIVER_VERSION ", " __TIME__
207 " " __DATE__ "\n");
208
209 if (!pci_present())
210 return -ENODEV;
211
212 while (pci_id->vendor) {
213 while ((dev = pci_find_device(pci_id->vendor, pci_id->device, dev)))
214 emu10k1_joy_probe(dev, pci_id);
215
216 pci_id++;
217 }
218 return 0;
219}
220
221static void __exit emu10k1_joy_cleanup_module(void)
222{
223 struct emu10k1_joy_card *card;
224
225 while (!list_empty(&emu10k1_joy_devs)) {
226 card = list_entry(emu10k1_joy_devs.next, struct emu10k1_joy_card, list);
227
228 emu10k1_joy_remove(card->pci_dev);
229 }
230 return;
231}
232#endif
233
234module_init(emu10k1_joy_init_module);
235module_exit(emu10k1_joy_cleanup_module);
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