4 * Detection routine for the ISA Sound Blaster and compatable sound
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.
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
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.
21 * 02-05-2003 Original Release, Paul Laufer <paul@laufernet.com>
22 * 02-07-2003 Bug made it into first release. Take two.
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include "sound_config.h"
32 #include <linux/pnp.h>
33 #endif /* CONFIG_PNP */
36 MODULE_DESCRIPTION("OSS Soundblaster ISA PnP and legacy sound driver");
37 MODULE_LICENSE("GPL");
39 extern void *smw_free;
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? */
51 static struct sb_card_config *legacy = NULL;
54 static int pnp_registered;
55 static int __initdata pnp = 1;
57 static int __initdata uart401 = 0;
60 static int __initdata pnp = 0;
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 " \
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)");
86 module_param(pnp, int, 000);
87 MODULE_PARM_DESC(pnp, "Went set to 0 will disable detection using PnP. "\
89 /* Not done yet.... */
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");
95 #endif /* CONFIG_PNP */
97 /* OSS subsystem card registration shared by PnP and legacy routines */
98 static int sb_register_oss(struct sb_card_config *scc, struct sb_module_options *sbmo)
100 if (!request_region(scc->conf.io_base, 16, "soundblaster")) {
101 printk(KERN_ERR "sb: ports busy.\n");
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");
112 if(!sb_dsp_init(&scc->conf, THIS_MODULE)) {
113 printk(KERN_ERR "sb: Failed DSP init.\n");
117 if(scc->mpucnf.io_base > 0) {
119 printk(KERN_INFO "sb: Turning on MPU\n");
120 if(!probe_sbmpu(&scc->mpucnf, THIS_MODULE))
127 static void sb_unload(struct sb_card_config *scc)
129 sb_dsp_unload(&scc->conf, 0);
131 unload_sbmpu(&scc->mpucnf);
135 /* Register legacy card with OSS subsystem */
136 static int __init sb_init_legacy(void)
138 struct sb_module_options sbmo = {0};
140 if((legacy = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
141 printk(KERN_ERR "sb: Error: Could not allocate memory\n");
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;
151 legacy->mpucnf.io_base = mpu_io;
152 legacy->mpucnf.irq = -1;
153 legacy->mpucnf.dma = -1;
154 legacy->mpucnf.dma2 = -1;
156 sbmo.esstype = esstype;
157 sbmo.sm_games = sm_games;
160 return sb_register_oss(legacy, &sbmo);
165 /* Populate the OSS subsystem structures with information from PnP */
166 static void sb_dev2cfg(struct pnp_dev *dev, struct sb_card_config *scc)
168 scc->conf.io_base = -1;
172 scc->mpucnf.io_base = -1;
173 scc->mpucnf.irq = -1;
174 scc->mpucnf.dma = -1;
175 scc->mpucnf.dma2 = -1;
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);
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);
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);
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);
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);
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);
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);
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);
236 static unsigned int sb_pnp_devices;
238 /* Probe callback function for the PnP API */
239 static int sb_pnp_probe(struct pnp_card_link *card, const struct pnp_card_device_id *card_id)
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);
249 if((scc = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
250 printk(KERN_ERR "sb: Error: Could not allocate memory\n");
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,
258 scc->card_id = card_id->id;
259 scc->dev_id = dev->id->id;
260 sb_dev2cfg(dev, scc);
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);
266 pnp_set_card_drvdata(card, scc);
269 return sb_register_oss(scc, &sbmo);
272 static void sb_pnp_remove(struct pnp_card_link *card)
274 struct sb_card_config *scc = pnp_get_card_drvdata(card);
279 printk(KERN_INFO "sb: PnP: Removing %s\n", scc->card_id);
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,
290 MODULE_DEVICE_TABLE(pnp_card, sb_pnp_card_table);
291 #endif /* CONFIG_PNP */
293 static void sb_unregister_all(void)
297 pnp_unregister_card_driver(&sb_pnp_driver);
301 static int __init sb_init(void)
306 printk(KERN_INFO "sb: Init: Starting Probe...\n");
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");
319 int err = pnp_register_card_driver(&sb_pnp_driver);
322 pres = sb_pnp_devices;
325 printk(KERN_INFO "sb: Init: Done\n");
327 /* If either PnP or Legacy registered a card then return
329 if (pres == 0 && lres <= 0) {
336 static void __exit sb_exit(void)
338 printk(KERN_INFO "sb: Unloading...\n");
340 /* Unload legacy card */
342 printk (KERN_INFO "sb: Unloading legacy card\n");
352 module_init(sb_init);
353 module_exit(sb_exit);