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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) 1999-2001 Vojtech Pavlik
4 * Copyright (c) 1999 Brian Gerst
5 */
6
7/*
8 * NS558 based standard IBM game port driver for Linux
9 */
10
11/*
12 */
13
14#include <asm/io.h>
15
16#include <linux/module.h>
17#include <linux/ioport.h>
18#include <linux/init.h>
19#include <linux/delay.h>
20#include <linux/gameport.h>
21#include <linux/slab.h>
22#include <linux/pnp.h>
23
24MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
25MODULE_DESCRIPTION("Classic gameport (ISA/PnP) driver");
26MODULE_LICENSE("GPL");
27
28static int ns558_isa_portlist[] = { 0x201, 0x200, 0x202, 0x203, 0x204, 0x205, 0x207, 0x209,
29 0x20b, 0x20c, 0x20e, 0x20f, 0x211, 0x219, 0x101, 0 };
30
31struct ns558 {
32 int type;
33 int io;
34 int size;
35 struct pnp_dev *dev;
36 struct gameport *gameport;
37 struct list_head node;
38};
39
40static LIST_HEAD(ns558_list);
41
42/*
43 * ns558_isa_probe() tries to find an isa gameport at the
44 * specified address, and also checks for mirrors.
45 * A joystick must be attached for this to work.
46 */
47
48static int ns558_isa_probe(int io)
49{
50 int i, j, b;
51 unsigned char c, u, v;
52 struct ns558 *ns558;
53 struct gameport *port;
54
55/*
56 * No one should be using this address.
57 */
58
59 if (!request_region(io, 1, "ns558-isa"))
60 return -EBUSY;
61
62/*
63 * We must not be able to write arbitrary values to the port.
64 * The lower two axis bits must be 1 after a write.
65 */
66
67 c = inb(io);
68 outb(~c & ~3, io);
69 if (~(u = v = inb(io)) & 3) {
70 outb(c, io);
71 release_region(io, 1);
72 return -ENODEV;
73 }
74/*
75 * After a trigger, there must be at least some bits changing.
76 */
77
78 for (i = 0; i < 1000; i++) v &= inb(io);
79
80 if (u == v) {
81 outb(c, io);
82 release_region(io, 1);
83 return -ENODEV;
84 }
85 msleep(3);
86/*
87 * After some time (4ms) the axes shouldn't change anymore.
88 */
89
90 u = inb(io);
91 for (i = 0; i < 1000; i++)
92 if ((u ^ inb(io)) & 0xf) {
93 outb(c, io);
94 release_region(io, 1);
95 return -ENODEV;
96 }
97/*
98 * And now find the number of mirrors of the port.
99 */
100
101 for (i = 1; i < 5; i++) {
102
103 release_region(io & (-1 << (i - 1)), (1 << (i - 1)));
104
105 if (!request_region(io & (-1 << i), (1 << i), "ns558-isa"))
106 break; /* Don't disturb anyone */
107
108 outb(0xff, io & (-1 << i));
109 for (j = b = 0; j < 1000; j++)
110 if (inb(io & (-1 << i)) != inb((io & (-1 << i)) + (1 << i) - 1)) b++;
111 msleep(3);
112
113 if (b > 300) { /* We allow 30% difference */
114 release_region(io & (-1 << i), (1 << i));
115 break;
116 }
117 }
118
119 i--;
120
121 if (i != 4) {
122 if (!request_region(io & (-1 << i), (1 << i), "ns558-isa"))
123 return -EBUSY;
124 }
125
126 ns558 = kzalloc(sizeof(struct ns558), GFP_KERNEL);
127 port = gameport_allocate_port();
128 if (!ns558 || !port) {
129 printk(KERN_ERR "ns558: Memory allocation failed.\n");
130 release_region(io & (-1 << i), (1 << i));
131 kfree(ns558);
132 gameport_free_port(port);
133 return -ENOMEM;
134 }
135
136 ns558->io = io;
137 ns558->size = 1 << i;
138 ns558->gameport = port;
139
140 port->io = io;
141 gameport_set_name(port, "NS558 ISA Gameport");
142 gameport_set_phys(port, "isa%04x/gameport0", io & (-1 << i));
143
144 gameport_register_port(port);
145
146 list_add(&ns558->node, &ns558_list);
147
148 return 0;
149}
150
151#ifdef CONFIG_PNP
152
153static const struct pnp_device_id pnp_devids[] = {
154 { .id = "@P@0001", .driver_data = 0 }, /* ALS 100 */
155 { .id = "@P@0020", .driver_data = 0 }, /* ALS 200 */
156 { .id = "@P@1001", .driver_data = 0 }, /* ALS 100+ */
157 { .id = "@P@2001", .driver_data = 0 }, /* ALS 120 */
158 { .id = "ASB16fd", .driver_data = 0 }, /* AdLib NSC16 */
159 { .id = "AZT3001", .driver_data = 0 }, /* AZT1008 */
160 { .id = "CDC0001", .driver_data = 0 }, /* Opl3-SAx */
161 { .id = "CSC0001", .driver_data = 0 }, /* CS4232 */
162 { .id = "CSC000f", .driver_data = 0 }, /* CS4236 */
163 { .id = "CSC0101", .driver_data = 0 }, /* CS4327 */
164 { .id = "CTL7001", .driver_data = 0 }, /* SB16 */
165 { .id = "CTL7002", .driver_data = 0 }, /* AWE64 */
166 { .id = "CTL7005", .driver_data = 0 }, /* Vibra16 */
167 { .id = "ENS2020", .driver_data = 0 }, /* SoundscapeVIVO */
168 { .id = "ESS0001", .driver_data = 0 }, /* ES1869 */
169 { .id = "ESS0005", .driver_data = 0 }, /* ES1878 */
170 { .id = "ESS6880", .driver_data = 0 }, /* ES688 */
171 { .id = "IBM0012", .driver_data = 0 }, /* CS4232 */
172 { .id = "OPT0001", .driver_data = 0 }, /* OPTi Audio16 */
173 { .id = "YMH0006", .driver_data = 0 }, /* Opl3-SA */
174 { .id = "YMH0022", .driver_data = 0 }, /* Opl3-SAx */
175 { .id = "PNPb02f", .driver_data = 0 }, /* Generic */
176 { .id = "", },
177};
178
179MODULE_DEVICE_TABLE(pnp, pnp_devids);
180
181static int ns558_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
182{
183 int ioport, iolen;
184 struct ns558 *ns558;
185 struct gameport *port;
186
187 if (!pnp_port_valid(dev, 0)) {
188 printk(KERN_WARNING "ns558: No i/o ports on a gameport? Weird\n");
189 return -ENODEV;
190 }
191
192 ioport = pnp_port_start(dev, 0);
193 iolen = pnp_port_len(dev, 0);
194
195 if (!request_region(ioport, iolen, "ns558-pnp"))
196 return -EBUSY;
197
198 ns558 = kzalloc(sizeof(struct ns558), GFP_KERNEL);
199 port = gameport_allocate_port();
200 if (!ns558 || !port) {
201 printk(KERN_ERR "ns558: Memory allocation failed\n");
202 kfree(ns558);
203 gameport_free_port(port);
204 return -ENOMEM;
205 }
206
207 ns558->io = ioport;
208 ns558->size = iolen;
209 ns558->dev = dev;
210 ns558->gameport = port;
211
212 gameport_set_name(port, "NS558 PnP Gameport");
213 gameport_set_phys(port, "pnp%s/gameport0", dev_name(&dev->dev));
214 port->dev.parent = &dev->dev;
215 port->io = ioport;
216
217 gameport_register_port(port);
218
219 list_add_tail(&ns558->node, &ns558_list);
220 return 0;
221}
222
223static struct pnp_driver ns558_pnp_driver = {
224 .name = "ns558",
225 .id_table = pnp_devids,
226 .probe = ns558_pnp_probe,
227};
228
229#else
230
231static struct pnp_driver ns558_pnp_driver;
232
233#endif
234
235static int __init ns558_init(void)
236{
237 int i = 0;
238 int error;
239
240 error = pnp_register_driver(&ns558_pnp_driver);
241 if (error && error != -ENODEV) /* should be ENOSYS really */
242 return error;
243
244/*
245 * Probe ISA ports after PnP, so that PnP ports that are already
246 * enabled get detected as PnP. This may be suboptimal in multi-device
247 * configurations, but saves hassle with simple setups.
248 */
249
250 while (ns558_isa_portlist[i])
251 ns558_isa_probe(ns558_isa_portlist[i++]);
252
253 return list_empty(&ns558_list) && error ? -ENODEV : 0;
254}
255
256static void __exit ns558_exit(void)
257{
258 struct ns558 *ns558, *safe;
259
260 list_for_each_entry_safe(ns558, safe, &ns558_list, node) {
261 gameport_unregister_port(ns558->gameport);
262 release_region(ns558->io & ~(ns558->size - 1), ns558->size);
263 kfree(ns558);
264 }
265
266 pnp_unregister_driver(&ns558_pnp_driver);
267}
268
269module_init(ns558_init);
270module_exit(ns558_exit);
1/*
2 * Copyright (c) 1999-2001 Vojtech Pavlik
3 * Copyright (c) 1999 Brian Gerst
4 */
5
6/*
7 * NS558 based standard IBM game port driver for Linux
8 */
9
10/*
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 *
25 * Should you need to contact me, the author, you can do so either by
26 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
27 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
28 */
29
30#include <asm/io.h>
31
32#include <linux/module.h>
33#include <linux/ioport.h>
34#include <linux/init.h>
35#include <linux/delay.h>
36#include <linux/gameport.h>
37#include <linux/slab.h>
38#include <linux/pnp.h>
39
40MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
41MODULE_DESCRIPTION("Classic gameport (ISA/PnP) driver");
42MODULE_LICENSE("GPL");
43
44static int ns558_isa_portlist[] = { 0x201, 0x200, 0x202, 0x203, 0x204, 0x205, 0x207, 0x209,
45 0x20b, 0x20c, 0x20e, 0x20f, 0x211, 0x219, 0x101, 0 };
46
47struct ns558 {
48 int type;
49 int io;
50 int size;
51 struct pnp_dev *dev;
52 struct gameport *gameport;
53 struct list_head node;
54};
55
56static LIST_HEAD(ns558_list);
57
58/*
59 * ns558_isa_probe() tries to find an isa gameport at the
60 * specified address, and also checks for mirrors.
61 * A joystick must be attached for this to work.
62 */
63
64static int ns558_isa_probe(int io)
65{
66 int i, j, b;
67 unsigned char c, u, v;
68 struct ns558 *ns558;
69 struct gameport *port;
70
71/*
72 * No one should be using this address.
73 */
74
75 if (!request_region(io, 1, "ns558-isa"))
76 return -EBUSY;
77
78/*
79 * We must not be able to write arbitrary values to the port.
80 * The lower two axis bits must be 1 after a write.
81 */
82
83 c = inb(io);
84 outb(~c & ~3, io);
85 if (~(u = v = inb(io)) & 3) {
86 outb(c, io);
87 release_region(io, 1);
88 return -ENODEV;
89 }
90/*
91 * After a trigger, there must be at least some bits changing.
92 */
93
94 for (i = 0; i < 1000; i++) v &= inb(io);
95
96 if (u == v) {
97 outb(c, io);
98 release_region(io, 1);
99 return -ENODEV;
100 }
101 msleep(3);
102/*
103 * After some time (4ms) the axes shouldn't change anymore.
104 */
105
106 u = inb(io);
107 for (i = 0; i < 1000; i++)
108 if ((u ^ inb(io)) & 0xf) {
109 outb(c, io);
110 release_region(io, 1);
111 return -ENODEV;
112 }
113/*
114 * And now find the number of mirrors of the port.
115 */
116
117 for (i = 1; i < 5; i++) {
118
119 release_region(io & (-1 << (i - 1)), (1 << (i - 1)));
120
121 if (!request_region(io & (-1 << i), (1 << i), "ns558-isa"))
122 break; /* Don't disturb anyone */
123
124 outb(0xff, io & (-1 << i));
125 for (j = b = 0; j < 1000; j++)
126 if (inb(io & (-1 << i)) != inb((io & (-1 << i)) + (1 << i) - 1)) b++;
127 msleep(3);
128
129 if (b > 300) { /* We allow 30% difference */
130 release_region(io & (-1 << i), (1 << i));
131 break;
132 }
133 }
134
135 i--;
136
137 if (i != 4) {
138 if (!request_region(io & (-1 << i), (1 << i), "ns558-isa"))
139 return -EBUSY;
140 }
141
142 ns558 = kzalloc(sizeof(struct ns558), GFP_KERNEL);
143 port = gameport_allocate_port();
144 if (!ns558 || !port) {
145 printk(KERN_ERR "ns558: Memory allocation failed.\n");
146 release_region(io & (-1 << i), (1 << i));
147 kfree(ns558);
148 gameport_free_port(port);
149 return -ENOMEM;
150 }
151
152 ns558->io = io;
153 ns558->size = 1 << i;
154 ns558->gameport = port;
155
156 port->io = io;
157 gameport_set_name(port, "NS558 ISA Gameport");
158 gameport_set_phys(port, "isa%04x/gameport0", io & (-1 << i));
159
160 gameport_register_port(port);
161
162 list_add(&ns558->node, &ns558_list);
163
164 return 0;
165}
166
167#ifdef CONFIG_PNP
168
169static const struct pnp_device_id pnp_devids[] = {
170 { .id = "@P@0001", .driver_data = 0 }, /* ALS 100 */
171 { .id = "@P@0020", .driver_data = 0 }, /* ALS 200 */
172 { .id = "@P@1001", .driver_data = 0 }, /* ALS 100+ */
173 { .id = "@P@2001", .driver_data = 0 }, /* ALS 120 */
174 { .id = "ASB16fd", .driver_data = 0 }, /* AdLib NSC16 */
175 { .id = "AZT3001", .driver_data = 0 }, /* AZT1008 */
176 { .id = "CDC0001", .driver_data = 0 }, /* Opl3-SAx */
177 { .id = "CSC0001", .driver_data = 0 }, /* CS4232 */
178 { .id = "CSC000f", .driver_data = 0 }, /* CS4236 */
179 { .id = "CSC0101", .driver_data = 0 }, /* CS4327 */
180 { .id = "CTL7001", .driver_data = 0 }, /* SB16 */
181 { .id = "CTL7002", .driver_data = 0 }, /* AWE64 */
182 { .id = "CTL7005", .driver_data = 0 }, /* Vibra16 */
183 { .id = "ENS2020", .driver_data = 0 }, /* SoundscapeVIVO */
184 { .id = "ESS0001", .driver_data = 0 }, /* ES1869 */
185 { .id = "ESS0005", .driver_data = 0 }, /* ES1878 */
186 { .id = "ESS6880", .driver_data = 0 }, /* ES688 */
187 { .id = "IBM0012", .driver_data = 0 }, /* CS4232 */
188 { .id = "OPT0001", .driver_data = 0 }, /* OPTi Audio16 */
189 { .id = "YMH0006", .driver_data = 0 }, /* Opl3-SA */
190 { .id = "YMH0022", .driver_data = 0 }, /* Opl3-SAx */
191 { .id = "PNPb02f", .driver_data = 0 }, /* Generic */
192 { .id = "", },
193};
194
195MODULE_DEVICE_TABLE(pnp, pnp_devids);
196
197static int ns558_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
198{
199 int ioport, iolen;
200 struct ns558 *ns558;
201 struct gameport *port;
202
203 if (!pnp_port_valid(dev, 0)) {
204 printk(KERN_WARNING "ns558: No i/o ports on a gameport? Weird\n");
205 return -ENODEV;
206 }
207
208 ioport = pnp_port_start(dev, 0);
209 iolen = pnp_port_len(dev, 0);
210
211 if (!request_region(ioport, iolen, "ns558-pnp"))
212 return -EBUSY;
213
214 ns558 = kzalloc(sizeof(struct ns558), GFP_KERNEL);
215 port = gameport_allocate_port();
216 if (!ns558 || !port) {
217 printk(KERN_ERR "ns558: Memory allocation failed\n");
218 kfree(ns558);
219 gameport_free_port(port);
220 return -ENOMEM;
221 }
222
223 ns558->io = ioport;
224 ns558->size = iolen;
225 ns558->dev = dev;
226 ns558->gameport = port;
227
228 gameport_set_name(port, "NS558 PnP Gameport");
229 gameport_set_phys(port, "pnp%s/gameport0", dev_name(&dev->dev));
230 port->dev.parent = &dev->dev;
231 port->io = ioport;
232
233 gameport_register_port(port);
234
235 list_add_tail(&ns558->node, &ns558_list);
236 return 0;
237}
238
239static struct pnp_driver ns558_pnp_driver = {
240 .name = "ns558",
241 .id_table = pnp_devids,
242 .probe = ns558_pnp_probe,
243};
244
245#else
246
247static struct pnp_driver ns558_pnp_driver;
248
249#endif
250
251static int __init ns558_init(void)
252{
253 int i = 0;
254 int error;
255
256 error = pnp_register_driver(&ns558_pnp_driver);
257 if (error && error != -ENODEV) /* should be ENOSYS really */
258 return error;
259
260/*
261 * Probe ISA ports after PnP, so that PnP ports that are already
262 * enabled get detected as PnP. This may be suboptimal in multi-device
263 * configurations, but saves hassle with simple setups.
264 */
265
266 while (ns558_isa_portlist[i])
267 ns558_isa_probe(ns558_isa_portlist[i++]);
268
269 return list_empty(&ns558_list) && error ? -ENODEV : 0;
270}
271
272static void __exit ns558_exit(void)
273{
274 struct ns558 *ns558, *safe;
275
276 list_for_each_entry_safe(ns558, safe, &ns558_list, node) {
277 gameport_unregister_port(ns558->gameport);
278 release_region(ns558->io & ~(ns558->size - 1), ns558->size);
279 kfree(ns558);
280 }
281
282 pnp_unregister_driver(&ns558_pnp_driver);
283}
284
285module_init(ns558_init);
286module_exit(ns558_exit);