sound/oss/sb_card.c

   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 */
  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
 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 */
 136 static int __init sb_init_legacy(void)
 137 {
 138         struct sb_module_options sbmo = {0};
 139
 140         if((legacy = kmalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
 141                 printk(KERN_ERR "sb: Error: Could not allocate memory\n");
 142                 return -ENOMEM;
 143         }
 144         memset(legacy, 0, sizeof(struct sb_card_config));
 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 */
 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 */
 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 = kmalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
 251                 printk(KERN_ERR "sb: Error: Could not allocate memory\n");
 252                 return -ENOMEM;
 253         }
 254         memset(scc, 0, sizeof(struct sb_card_config));
 255
 256         printk(KERN_INFO "sb: PnP: Found Card Named = \"%s\", Card PnP id = " \
 257                "%s, Device PnP id = %s\n", card->card->name, card_id->id,
 258                dev->id->id);
 259
 260         scc->card_id = card_id->id;
 261         scc->dev_id = dev->id->id;
 262         sb_dev2cfg(dev, scc);
 263
 264         printk(KERN_INFO "sb: PnP:      Detected at: io=0x%x, irq=%d, " \
 265                "dma=%d, dma16=%d\n", scc->conf.io_base, scc->conf.irq,
 266                scc->conf.dma, scc->conf.dma2);
 267
 268         pnp_set_card_drvdata(card, scc);
 269         sb_pnp_devices++;
 270
 271         return sb_register_oss(scc, &sbmo);
 272 }
 273
 274 static void sb_pnp_remove(struct pnp_card_link *card)
 275 {
 276         struct sb_card_config *scc = pnp_get_card_drvdata(card);
 277
 278         if(!scc)
 279                 return;
 280
 281         printk(KERN_INFO "sb: PnP: Removing %s\n", scc->card_id);
 282
 283         sb_unload(scc);
 284 }
 285
 286 static struct pnp_card_driver sb_pnp_driver = {
 287         .name          = "OSS SndBlstr", /* 16 character limit */
 288         .id_table      = sb_pnp_card_table,
 289         .probe         = sb_pnp_probe,
 290         .remove        = sb_pnp_remove,
 291 };
 292 MODULE_DEVICE_TABLE(pnp_card, sb_pnp_card_table);
 293 #endif /* CONFIG_PNP */
 294
 295 static void __init_or_module sb_unregister_all(void)
 296 {
 297 #ifdef CONFIG_PNP
 298         if (pnp_registered)
 299                 pnp_unregister_card_driver(&sb_pnp_driver);
 300 #endif
 301 }
 302
 303 static int __init sb_init(void)
 304 {
 305         int lres = 0;
 306         int pres = 0;
 307
 308         printk(KERN_INFO "sb: Init: Starting Probe...\n");
 309
 310         if(io != -1 && irq != -1 && dma != -1) {
 311                 printk(KERN_INFO "sb: Probing legacy card with io=%x, "\
 312                        "irq=%d, dma=%d, dma16=%d\n",io, irq, dma, dma16);
 313                 lres = sb_init_legacy();
 314         } else if((io != -1 || irq != -1 || dma != -1) ||
 315                   (!pnp && (io == -1 && irq == -1 && dma == -1)))
 316                 printk(KERN_ERR "sb: Error: At least io, irq, and dma "\
 317                        "must be set for legacy cards.\n");
 318
 319 #ifdef CONFIG_PNP
 320         if(pnp) {
 321                 int err = pnp_register_card_driver(&sb_pnp_driver);
 322                 if (!err)
 323                         pnp_registered = 1;
 324                 pres = sb_pnp_devices;
 325         }
 326 #endif
 327         printk(KERN_INFO "sb: Init: Done\n");
 328
 329         /* If either PnP or Legacy registered a card then return
 330          * success */
 331         if (pres == 0 && lres <= 0) {
 332                 sb_unregister_all();
 333                 return -ENODEV;
 334         }
 335         return 0;
 336 }
 337
 338 static void __exit sb_exit(void)
 339 {
 340         printk(KERN_INFO "sb: Unloading...\n");
 341
 342         /* Unload legacy card */
 343         if (legacy) {
 344                 printk (KERN_INFO "sb: Unloading legacy card\n");
 345                 sb_unload(legacy);
 346         }
 347
 348         sb_unregister_all();
 349
 350         vfree(smw_free);
 351         smw_free = NULL;
 352 }
 353
 354 module_init(sb_init);
 355 module_exit(sb_exit);