1 /*
2 * sound/oss/sb_card.c
3 *
4 * Detection routine for the ISA Sound Blaster and compatible 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/slab.h>
28 #include <linux/init.h>
29 #include "sound_config.h"
30 #include "sb_mixer.h"
31 #include "sb.h"
32 #ifdef CONFIG_PNP
33 #include <linux/pnp.h>
34 #endif /* CONFIG_PNP */
35 #include "sb_card.h"
36
37 MODULE_DESCRIPTION("OSS Soundblaster ISA PnP and legacy sound driver");
38 MODULE_LICENSE("GPL");
39
40 extern void *smw_free;
41
42 static int __initdata mpu_io = 0;
43 static int __initdata io = -1;
44 static int __initdata irq = -1;
45 static int __initdata dma = -1;
46 static int __initdata dma16 = -1;
47 static int __initdata type = 0; /* Can set this to a specific card type */
48 static int __initdata esstype = 0; /* ESS chip type */
49 static int __initdata acer = 0; /* Do acer notebook init? */
50 static int __initdata sm_games = 0; /* Logitech soundman games? */
51
52 static struct sb_card_config *legacy = NULL;
53
54 #ifdef CONFIG_PNP
55 static int pnp_registered;
56 static int __initdata pnp = 1;
57 /*
58 static int __initdata uart401 = 0;
59 */
60 #else
61 static int __initdata pnp = 0;
62 #endif
63
64 module_param(io, int, 000);
65 MODULE_PARM_DESC(io, "Soundblaster i/o base address (0x220,0x240,0x260,0x280)");
66 module_param(irq, int, 000);
67 MODULE_PARM_DESC(irq, "IRQ (5,7,9,10)");
68 module_param(dma, int, 000);
69 MODULE_PARM_DESC(dma, "8-bit DMA channel (0,1,3)");
70 module_param(dma16, int, 000);
71 MODULE_PARM_DESC(dma16, "16-bit DMA channel (5,6,7)");
72 module_param(mpu_io, int, 000);
73 MODULE_PARM_DESC(mpu_io, "MPU base address");
74 module_param(type, int, 000);
75 MODULE_PARM_DESC(type, "You can set this to specific card type (doesn't " \
76 "work with pnp)");
77 module_param(sm_games, int, 000);
78 MODULE_PARM_DESC(sm_games, "Enable support for Logitech soundman games " \
79 "(doesn't work with pnp)");
80 module_param(esstype, int, 000);
81 MODULE_PARM_DESC(esstype, "ESS chip type (doesn't work with pnp)");
82 module_param(acer, int, 000);
83 MODULE_PARM_DESC(acer, "Set this to detect cards in some ACER notebooks "\
84 "(doesn't work with pnp)");
85
86 #ifdef CONFIG_PNP
87 module_param(pnp, int, 000);
88 MODULE_PARM_DESC(pnp, "Went set to 0 will disable detection using PnP. "\
89 "Default is 1.\n");
90 /* Not done yet.... */
91 /*
92 module_param(uart401, int, 000);
93 MODULE_PARM_DESC(uart401, "When set to 1, will attempt to detect and enable"\
94 "the mpu on some clones");
95 */
96 #endif /* CONFIG_PNP */
97
98 /* OSS subsystem card registration shared by PnP and legacy routines */
sb_register_oss(struct sb_card_config * scc,struct sb_module_options * sbmo)99 static int sb_register_oss(struct sb_card_config *scc, struct sb_module_options *sbmo)
100 {
101 if (!request_region(scc->conf.io_base, 16, "soundblaster")) {
102 printk(KERN_ERR "sb: ports busy.\n");
103 kfree(scc);
104 return -EBUSY;
105 }
106
107 if (!sb_dsp_detect(&scc->conf, 0, 0, sbmo)) {
108 release_region(scc->conf.io_base, 16);
109 printk(KERN_ERR "sb: Failed DSP Detect.\n");
110 kfree(scc);
111 return -ENODEV;
112 }
113 if(!sb_dsp_init(&scc->conf, THIS_MODULE)) {
114 printk(KERN_ERR "sb: Failed DSP init.\n");
115 kfree(scc);
116 return -ENODEV;
117 }
118 if(scc->mpucnf.io_base > 0) {
119 scc->mpu = 1;
120 printk(KERN_INFO "sb: Turning on MPU\n");
121 if(!probe_sbmpu(&scc->mpucnf, THIS_MODULE))
122 scc->mpu = 0;
123 }
124
125 return 1;
126 }
127
sb_unload(struct sb_card_config * scc)128 static void sb_unload(struct sb_card_config *scc)
129 {
130 sb_dsp_unload(&scc->conf, 0);
131 if(scc->mpu)
132 unload_sbmpu(&scc->mpucnf);
133 kfree(scc);
134 }
135
136 /* Register legacy card with OSS subsystem */
sb_init_legacy(void)137 static int __init sb_init_legacy(void)
138 {
139 struct sb_module_options sbmo = {0};
140
141 if((legacy = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
142 printk(KERN_ERR "sb: Error: Could not allocate memory\n");
143 return -ENOMEM;
144 }
145
146 legacy->conf.io_base = io;
147 legacy->conf.irq = irq;
148 legacy->conf.dma = dma;
149 legacy->conf.dma2 = dma16;
150 legacy->conf.card_subtype = type;
151
152 legacy->mpucnf.io_base = mpu_io;
153 legacy->mpucnf.irq = -1;
154 legacy->mpucnf.dma = -1;
155 legacy->mpucnf.dma2 = -1;
156
157 sbmo.esstype = esstype;
158 sbmo.sm_games = sm_games;
159 sbmo.acer = acer;
160
161 return sb_register_oss(legacy, &sbmo);
162 }
163
164 #ifdef CONFIG_PNP
165
166 /* Populate the OSS subsystem structures with information from PnP */
sb_dev2cfg(struct pnp_dev * dev,struct sb_card_config * scc)167 static void sb_dev2cfg(struct pnp_dev *dev, struct sb_card_config *scc)
168 {
169 scc->conf.io_base = -1;
170 scc->conf.irq = -1;
171 scc->conf.dma = -1;
172 scc->conf.dma2 = -1;
173 scc->mpucnf.io_base = -1;
174 scc->mpucnf.irq = -1;
175 scc->mpucnf.dma = -1;
176 scc->mpucnf.dma2 = -1;
177
178 /* All clones layout their PnP tables differently and some use
179 different logical devices for the MPU */
180 if(!strncmp("CTL",scc->card_id,3)) {
181 scc->conf.io_base = pnp_port_start(dev,0);
182 scc->conf.irq = pnp_irq(dev,0);
183 scc->conf.dma = pnp_dma(dev,0);
184 scc->conf.dma2 = pnp_dma(dev,1);
185 scc->mpucnf.io_base = pnp_port_start(dev,1);
186 return;
187 }
188 if(!strncmp("tBA",scc->card_id,3)) {
189 scc->conf.io_base = pnp_port_start(dev,0);
190 scc->conf.irq = pnp_irq(dev,0);
191 scc->conf.dma = pnp_dma(dev,0);
192 scc->conf.dma2 = pnp_dma(dev,1);
193 return;
194 }
195 if(!strncmp("ESS",scc->card_id,3)) {
196 scc->conf.io_base = pnp_port_start(dev,0);
197 scc->conf.irq = pnp_irq(dev,0);
198 scc->conf.dma = pnp_dma(dev,0);
199 scc->conf.dma2 = pnp_dma(dev,1);
200 scc->mpucnf.io_base = pnp_port_start(dev,2);
201 return;
202 }
203 if(!strncmp("CMI",scc->card_id,3)) {
204 scc->conf.io_base = pnp_port_start(dev,0);
205 scc->conf.irq = pnp_irq(dev,0);
206 scc->conf.dma = pnp_dma(dev,0);
207 scc->conf.dma2 = pnp_dma(dev,1);
208 return;
209 }
210 if(!strncmp("RWB",scc->card_id,3)) {
211 scc->conf.io_base = pnp_port_start(dev,0);
212 scc->conf.irq = pnp_irq(dev,0);
213 scc->conf.dma = pnp_dma(dev,0);
214 return;
215 }
216 if(!strncmp("ALS",scc->card_id,3)) {
217 if(!strncmp("ALS0007",scc->card_id,7)) {
218 scc->conf.io_base = pnp_port_start(dev,0);
219 scc->conf.irq = pnp_irq(dev,0);
220 scc->conf.dma = pnp_dma(dev,0);
221 } else {
222 scc->conf.io_base = pnp_port_start(dev,0);
223 scc->conf.irq = pnp_irq(dev,0);
224 scc->conf.dma = pnp_dma(dev,1);
225 scc->conf.dma2 = pnp_dma(dev,0);
226 }
227 return;
228 }
229 if(!strncmp("RTL",scc->card_id,3)) {
230 scc->conf.io_base = pnp_port_start(dev,0);
231 scc->conf.irq = pnp_irq(dev,0);
232 scc->conf.dma = pnp_dma(dev,1);
233 scc->conf.dma2 = pnp_dma(dev,0);
234 }
235 }
236
237 static unsigned int sb_pnp_devices;
238
239 /* Probe callback function for the PnP API */
sb_pnp_probe(struct pnp_card_link * card,const struct pnp_card_device_id * card_id)240 static int sb_pnp_probe(struct pnp_card_link *card, const struct pnp_card_device_id *card_id)
241 {
242 struct sb_card_config *scc;
243 struct sb_module_options sbmo = {0}; /* Default to 0 for PnP */
244 struct pnp_dev *dev = pnp_request_card_device(card, card_id->devs[0].id, NULL);
245
246 if(!dev){
247 return -EBUSY;
248 }
249
250 if((scc = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
251 printk(KERN_ERR "sb: Error: Could not allocate memory\n");
252 return -ENOMEM;
253 }
254
255 printk(KERN_INFO "sb: PnP: Found Card Named = \"%s\", Card PnP id = " \
256 "%s, Device PnP id = %s\n", card->card->name, card_id->id,
257 dev->id->id);
258
259 scc->card_id = card_id->id;
260 scc->dev_id = dev->id->id;
261 sb_dev2cfg(dev, scc);
262
263 printk(KERN_INFO "sb: PnP: Detected at: io=0x%x, irq=%d, " \
264 "dma=%d, dma16=%d\n", scc->conf.io_base, scc->conf.irq,
265 scc->conf.dma, scc->conf.dma2);
266
267 pnp_set_card_drvdata(card, scc);
268 sb_pnp_devices++;
269
270 return sb_register_oss(scc, &sbmo);
271 }
272
sb_pnp_remove(struct pnp_card_link * card)273 static void sb_pnp_remove(struct pnp_card_link *card)
274 {
275 struct sb_card_config *scc = pnp_get_card_drvdata(card);
276
277 if(!scc)
278 return;
279
280 printk(KERN_INFO "sb: PnP: Removing %s\n", scc->card_id);
281
282 sb_unload(scc);
283 }
284
285 static struct pnp_card_driver sb_pnp_driver = {
286 .name = "OSS SndBlstr", /* 16 character limit */
287 .id_table = sb_pnp_card_table,
288 .probe = sb_pnp_probe,
289 .remove = sb_pnp_remove,
290 };
291 MODULE_DEVICE_TABLE(pnp_card, sb_pnp_card_table);
292 #endif /* CONFIG_PNP */
293
sb_unregister_all(void)294 static void sb_unregister_all(void)
295 {
296 #ifdef CONFIG_PNP
297 if (pnp_registered)
298 pnp_unregister_card_driver(&sb_pnp_driver);
299 #endif
300 }
301
sb_init(void)302 static int __init sb_init(void)
303 {
304 int lres = 0;
305 int pres = 0;
306
307 printk(KERN_INFO "sb: Init: Starting Probe...\n");
308
309 if(io != -1 && irq != -1 && dma != -1) {
310 printk(KERN_INFO "sb: Probing legacy card with io=%x, "\
311 "irq=%d, dma=%d, dma16=%d\n",io, irq, dma, dma16);
312 lres = sb_init_legacy();
313 } else if((io != -1 || irq != -1 || dma != -1) ||
314 (!pnp && (io == -1 && irq == -1 && dma == -1)))
315 printk(KERN_ERR "sb: Error: At least io, irq, and dma "\
316 "must be set for legacy cards.\n");
317
318 #ifdef CONFIG_PNP
319 if(pnp) {
320 int err = pnp_register_card_driver(&sb_pnp_driver);
321 if (!err)
322 pnp_registered = 1;
323 pres = sb_pnp_devices;
324 }
325 #endif
326 printk(KERN_INFO "sb: Init: Done\n");
327
328 /* If either PnP or Legacy registered a card then return
329 * success */
330 if (pres == 0 && lres <= 0) {
331 sb_unregister_all();
332 return -ENODEV;
333 }
334 return 0;
335 }
336
sb_exit(void)337 static void __exit sb_exit(void)
338 {
339 printk(KERN_INFO "sb: Unloading...\n");
340
341 /* Unload legacy card */
342 if (legacy) {
343 printk (KERN_INFO "sb: Unloading legacy card\n");
344 sb_unload(legacy);
345 }
346
347 sb_unregister_all();
348
349 vfree(smw_free);
350 smw_free = NULL;
351 }
352
353 module_init(sb_init);
354 module_exit(sb_exit);
355