1 /*
2 * sound/oss/sb_card.c
3 *
4 * Detection routine for the ISA Sound Blaster and compatable sound
5 * cards.
6 *
7 * This file is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
8 * Version 2 (June 1991). See the "COPYING" file distributed with this
9 * software for more info.
10 *
11 * This is a complete rewrite of the detection routines. This was
12 * prompted by the PnP API change during v2.5 and the ugly state the
13 * code was in.
14 *
15 * Copyright (C) by Paul Laufer 2002. Based on code originally by
16 * Hannu Savolainen which was modified by many others over the
17 * years. Authors specifically mentioned in the previous version were:
18 * Daniel Stone, Alessandro Zummo, Jeff Garzik, Arnaldo Carvalho de
19 * Melo, Daniel Church, and myself.
20 *
21 * 02-05-2003 Original Release, Paul Laufer <paul@laufernet.com>
22 * 02-07-2003 Bug made it into first release. Take two.
23 */
24
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include "sound_config.h"
29 #include "sb_mixer.h"
30 #include "sb.h"
31 #ifdef CONFIG_PNP
32 #include <linux/pnp.h>
33 #endif /* CONFIG_PNP */
34 #include "sb_card.h"
35
36 MODULE_DESCRIPTION("OSS Soundblaster ISA PnP and legacy sound driver");
37 MODULE_LICENSE("GPL");
38
39 extern void *smw_free;
40
41 static int __initdata mpu_io = 0;
42 static int __initdata io = -1;
43 static int __initdata irq = -1;
44 static int __initdata dma = -1;
45 static int __initdata dma16 = -1;
46 static int __initdata type = 0; /* Can set this to a specific card type */
47 static int __initdata esstype = 0; /* ESS chip type */
48 static int __initdata acer = 0; /* Do acer notebook init? */
49 static int __initdata sm_games = 0; /* Logitech soundman games? */
50
51 static struct sb_card_config *legacy = NULL;
52
53 #ifdef CONFIG_PNP
54 static int pnp_registered;
55 static int __initdata pnp = 1;
56 /*
57 static int __initdata uart401 = 0;
58 */
59 #else
60 static int __initdata pnp = 0;
61 #endif
62
63 module_param(io, int, 000);
64 MODULE_PARM_DESC(io, "Soundblaster i/o base address (0x220,0x240,0x260,0x280)");
65 module_param(irq, int, 000);
66 MODULE_PARM_DESC(irq, "IRQ (5,7,9,10)");
67 module_param(dma, int, 000);
68 MODULE_PARM_DESC(dma, "8-bit DMA channel (0,1,3)");
69 module_param(dma16, int, 000);
70 MODULE_PARM_DESC(dma16, "16-bit DMA channel (5,6,7)");
71 module_param(mpu_io, int, 000);
72 MODULE_PARM_DESC(mpu_io, "MPU base address");
73 module_param(type, int, 000);
74 MODULE_PARM_DESC(type, "You can set this to specific card type (doesn't " \
75 "work with pnp)");
76 module_param(sm_games, int, 000);
77 MODULE_PARM_DESC(sm_games, "Enable support for Logitech soundman games " \
78 "(doesn't work with pnp)");
79 module_param(esstype, int, 000);
80 MODULE_PARM_DESC(esstype, "ESS chip type (doesn't work with pnp)");
81 module_param(acer, int, 000);
82 MODULE_PARM_DESC(acer, "Set this to detect cards in some ACER notebooks "\
83 "(doesn't work with pnp)");
84
85 #ifdef CONFIG_PNP
86 module_param(pnp, int, 000);
87 MODULE_PARM_DESC(pnp, "Went set to 0 will disable detection using PnP. "\
88 "Default is 1.\n");
89 /* Not done yet.... */
90 /*
91 module_param(uart401, int, 000);
92 MODULE_PARM_DESC(uart401, "When set to 1, will attempt to detect and enable"\
93 "the mpu on some clones");
94 */
95 #endif /* CONFIG_PNP */
96
97 /* OSS subsystem card registration shared by PnP and legacy routines */
sb_register_oss(struct sb_card_config * scc,struct sb_module_options * sbmo)98 static int sb_register_oss(struct sb_card_config *scc, struct sb_module_options *sbmo)
99 {
100 if (!request_region(scc->conf.io_base, 16, "soundblaster")) {
101 printk(KERN_ERR "sb: ports busy.\n");
102 kfree(scc);
103 return -EBUSY;
104 }
105
106 if (!sb_dsp_detect(&scc->conf, 0, 0, sbmo)) {
107 release_region(scc->conf.io_base, 16);
108 printk(KERN_ERR "sb: Failed DSP Detect.\n");
109 kfree(scc);
110 return -ENODEV;
111 }
112 if(!sb_dsp_init(&scc->conf, THIS_MODULE)) {
113 printk(KERN_ERR "sb: Failed DSP init.\n");
114 kfree(scc);
115 return -ENODEV;
116 }
117 if(scc->mpucnf.io_base > 0) {
118 scc->mpu = 1;
119 printk(KERN_INFO "sb: Turning on MPU\n");
120 if(!probe_sbmpu(&scc->mpucnf, THIS_MODULE))
121 scc->mpu = 0;
122 }
123
124 return 1;
125 }
126
sb_unload(struct sb_card_config * scc)127 static void sb_unload(struct sb_card_config *scc)
128 {
129 sb_dsp_unload(&scc->conf, 0);
130 if(scc->mpu)
131 unload_sbmpu(&scc->mpucnf);
132 kfree(scc);
133 }
134
135 /* Register legacy card with OSS subsystem */
sb_init_legacy(void)136 static int __init sb_init_legacy(void)
137 {
138 struct sb_module_options sbmo = {0};
139
140 if((legacy = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
141 printk(KERN_ERR "sb: Error: Could not allocate memory\n");
142 return -ENOMEM;
143 }
144
145 legacy->conf.io_base = io;
146 legacy->conf.irq = irq;
147 legacy->conf.dma = dma;
148 legacy->conf.dma2 = dma16;
149 legacy->conf.card_subtype = type;
150
151 legacy->mpucnf.io_base = mpu_io;
152 legacy->mpucnf.irq = -1;
153 legacy->mpucnf.dma = -1;
154 legacy->mpucnf.dma2 = -1;
155
156 sbmo.esstype = esstype;
157 sbmo.sm_games = sm_games;
158 sbmo.acer = acer;
159
160 return sb_register_oss(legacy, &sbmo);
161 }
162
163 #ifdef CONFIG_PNP
164
165 /* Populate the OSS subsystem structures with information from PnP */
sb_dev2cfg(struct pnp_dev * dev,struct sb_card_config * scc)166 static void sb_dev2cfg(struct pnp_dev *dev, struct sb_card_config *scc)
167 {
168 scc->conf.io_base = -1;
169 scc->conf.irq = -1;
170 scc->conf.dma = -1;
171 scc->conf.dma2 = -1;
172 scc->mpucnf.io_base = -1;
173 scc->mpucnf.irq = -1;
174 scc->mpucnf.dma = -1;
175 scc->mpucnf.dma2 = -1;
176
177 /* All clones layout their PnP tables differently and some use
178 different logical devices for the MPU */
179 if(!strncmp("CTL",scc->card_id,3)) {
180 scc->conf.io_base = pnp_port_start(dev,0);
181 scc->conf.irq = pnp_irq(dev,0);
182 scc->conf.dma = pnp_dma(dev,0);
183 scc->conf.dma2 = pnp_dma(dev,1);
184 scc->mpucnf.io_base = pnp_port_start(dev,1);
185 return;
186 }
187 if(!strncmp("tBA",scc->card_id,3)) {
188 scc->conf.io_base = pnp_port_start(dev,0);
189 scc->conf.irq = pnp_irq(dev,0);
190 scc->conf.dma = pnp_dma(dev,0);
191 scc->conf.dma2 = pnp_dma(dev,1);
192 return;
193 }
194 if(!strncmp("ESS",scc->card_id,3)) {
195 scc->conf.io_base = pnp_port_start(dev,0);
196 scc->conf.irq = pnp_irq(dev,0);
197 scc->conf.dma = pnp_dma(dev,0);
198 scc->conf.dma2 = pnp_dma(dev,1);
199 scc->mpucnf.io_base = pnp_port_start(dev,2);
200 return;
201 }
202 if(!strncmp("CMI",scc->card_id,3)) {
203 scc->conf.io_base = pnp_port_start(dev,0);
204 scc->conf.irq = pnp_irq(dev,0);
205 scc->conf.dma = pnp_dma(dev,0);
206 scc->conf.dma2 = pnp_dma(dev,1);
207 return;
208 }
209 if(!strncmp("RWB",scc->card_id,3)) {
210 scc->conf.io_base = pnp_port_start(dev,0);
211 scc->conf.irq = pnp_irq(dev,0);
212 scc->conf.dma = pnp_dma(dev,0);
213 return;
214 }
215 if(!strncmp("ALS",scc->card_id,3)) {
216 if(!strncmp("ALS0007",scc->card_id,7)) {
217 scc->conf.io_base = pnp_port_start(dev,0);
218 scc->conf.irq = pnp_irq(dev,0);
219 scc->conf.dma = pnp_dma(dev,0);
220 } else {
221 scc->conf.io_base = pnp_port_start(dev,0);
222 scc->conf.irq = pnp_irq(dev,0);
223 scc->conf.dma = pnp_dma(dev,1);
224 scc->conf.dma2 = pnp_dma(dev,0);
225 }
226 return;
227 }
228 if(!strncmp("RTL",scc->card_id,3)) {
229 scc->conf.io_base = pnp_port_start(dev,0);
230 scc->conf.irq = pnp_irq(dev,0);
231 scc->conf.dma = pnp_dma(dev,1);
232 scc->conf.dma2 = pnp_dma(dev,0);
233 }
234 }
235
236 static unsigned int sb_pnp_devices;
237
238 /* Probe callback function for the PnP API */
sb_pnp_probe(struct pnp_card_link * card,const struct pnp_card_device_id * card_id)239 static int sb_pnp_probe(struct pnp_card_link *card, const struct pnp_card_device_id *card_id)
240 {
241 struct sb_card_config *scc;
242 struct sb_module_options sbmo = {0}; /* Default to 0 for PnP */
243 struct pnp_dev *dev = pnp_request_card_device(card, card_id->devs[0].id, NULL);
244
245 if(!dev){
246 return -EBUSY;
247 }
248
249 if((scc = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
250 printk(KERN_ERR "sb: Error: Could not allocate memory\n");
251 return -ENOMEM;
252 }
253
254 printk(KERN_INFO "sb: PnP: Found Card Named = \"%s\", Card PnP id = " \
255 "%s, Device PnP id = %s\n", card->card->name, card_id->id,
256 dev->id->id);
257
258 scc->card_id = card_id->id;
259 scc->dev_id = dev->id->id;
260 sb_dev2cfg(dev, scc);
261
262 printk(KERN_INFO "sb: PnP: Detected at: io=0x%x, irq=%d, " \
263 "dma=%d, dma16=%d\n", scc->conf.io_base, scc->conf.irq,
264 scc->conf.dma, scc->conf.dma2);
265
266 pnp_set_card_drvdata(card, scc);
267 sb_pnp_devices++;
268
269 return sb_register_oss(scc, &sbmo);
270 }
271
sb_pnp_remove(struct pnp_card_link * card)272 static void sb_pnp_remove(struct pnp_card_link *card)
273 {
274 struct sb_card_config *scc = pnp_get_card_drvdata(card);
275
276 if(!scc)
277 return;
278
279 printk(KERN_INFO "sb: PnP: Removing %s\n", scc->card_id);
280
281 sb_unload(scc);
282 }
283
284 static struct pnp_card_driver sb_pnp_driver = {
285 .name = "OSS SndBlstr", /* 16 character limit */
286 .id_table = sb_pnp_card_table,
287 .probe = sb_pnp_probe,
288 .remove = sb_pnp_remove,
289 };
290 MODULE_DEVICE_TABLE(pnp_card, sb_pnp_card_table);
291 #endif /* CONFIG_PNP */
292
sb_unregister_all(void)293 static void sb_unregister_all(void)
294 {
295 #ifdef CONFIG_PNP
296 if (pnp_registered)
297 pnp_unregister_card_driver(&sb_pnp_driver);
298 #endif
299 }
300
sb_init(void)301 static int __init sb_init(void)
302 {
303 int lres = 0;
304 int pres = 0;
305
306 printk(KERN_INFO "sb: Init: Starting Probe...\n");
307
308 if(io != -1 && irq != -1 && dma != -1) {
309 printk(KERN_INFO "sb: Probing legacy card with io=%x, "\
310 "irq=%d, dma=%d, dma16=%d\n",io, irq, dma, dma16);
311 lres = sb_init_legacy();
312 } else if((io != -1 || irq != -1 || dma != -1) ||
313 (!pnp && (io == -1 && irq == -1 && dma == -1)))
314 printk(KERN_ERR "sb: Error: At least io, irq, and dma "\
315 "must be set for legacy cards.\n");
316
317 #ifdef CONFIG_PNP
318 if(pnp) {
319 int err = pnp_register_card_driver(&sb_pnp_driver);
320 if (!err)
321 pnp_registered = 1;
322 pres = sb_pnp_devices;
323 }
324 #endif
325 printk(KERN_INFO "sb: Init: Done\n");
326
327 /* If either PnP or Legacy registered a card then return
328 * success */
329 if (pres == 0 && lres <= 0) {
330 sb_unregister_all();
331 return -ENODEV;
332 }
333 return 0;
334 }
335
sb_exit(void)336 static void __exit sb_exit(void)
337 {
338 printk(KERN_INFO "sb: Unloading...\n");
339
340 /* Unload legacy card */
341 if (legacy) {
342 printk (KERN_INFO "sb: Unloading legacy card\n");
343 sb_unload(legacy);
344 }
345
346 sb_unregister_all();
347
348 vfree(smw_free);
349 smw_free = NULL;
350 }
351
352 module_init(sb_init);
353 module_exit(sb_exit);
354