linux/sound/oss/sb_card.c
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   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
  37MODULE_DESCRIPTION("OSS Soundblaster ISA PnP and legacy sound driver");
  38MODULE_LICENSE("GPL");
  39
  40extern void *smw_free;
  41
  42static int __initdata mpu_io    = 0;
  43static int __initdata io        = -1;
  44static int __initdata irq       = -1;
  45static int __initdata dma       = -1;
  46static int __initdata dma16     = -1;
  47static int __initdata type      = 0; /* Can set this to a specific card type */
  48static int __initdata esstype   = 0; /* ESS chip type */
  49static int __initdata acer      = 0; /* Do acer notebook init? */
  50static int __initdata sm_games  = 0; /* Logitech soundman games? */
  51
  52static struct sb_card_config *legacy = NULL;
  53
  54#ifdef CONFIG_PNP
  55static int pnp_registered;
  56static int __initdata pnp       = 1;
  57/*
  58static int __initdata uart401   = 0;
  59*/
  60#else
  61static int __initdata pnp       = 0;
  62#endif
  63
  64module_param(io, int, 000);
  65MODULE_PARM_DESC(io,       "Soundblaster i/o base address (0x220,0x240,0x260,0x280)");
  66module_param(irq, int, 000);
  67MODULE_PARM_DESC(irq,      "IRQ (5,7,9,10)");
  68module_param(dma, int, 000);
  69MODULE_PARM_DESC(dma,      "8-bit DMA channel (0,1,3)");
  70module_param(dma16, int, 000);
  71MODULE_PARM_DESC(dma16,    "16-bit DMA channel (5,6,7)");
  72module_param(mpu_io, int, 000);
  73MODULE_PARM_DESC(mpu_io,   "MPU base address");
  74module_param(type, int, 000);
  75MODULE_PARM_DESC(type,     "You can set this to specific card type (doesn't " \
  76                 "work with pnp)");
  77module_param(sm_games, int, 000);
  78MODULE_PARM_DESC(sm_games, "Enable support for Logitech soundman games " \
  79                 "(doesn't work with pnp)");
  80module_param(esstype, int, 000);
  81MODULE_PARM_DESC(esstype,  "ESS chip type (doesn't work with pnp)");
  82module_param(acer, int, 000);
  83MODULE_PARM_DESC(acer,     "Set this to detect cards in some ACER notebooks "\
  84                 "(doesn't work with pnp)");
  85
  86#ifdef CONFIG_PNP
  87module_param(pnp, int, 000);
  88MODULE_PARM_DESC(pnp,     "Went set to 0 will disable detection using PnP. "\
  89                  "Default is 1.\n");
  90/* Not done yet.... */
  91/*
  92module_param(uart401, int, 000);
  93MODULE_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 */
  99static 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
 128static 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 */
 137static 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 */
 167static 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
 237static unsigned int sb_pnp_devices;
 238
 239/* Probe callback function for the PnP API */
 240static 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
 273static 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
 285static 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};
 291MODULE_DEVICE_TABLE(pnp_card, sb_pnp_card_table);
 292#endif /* CONFIG_PNP */
 293
 294static 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
 302static 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
 337static 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
 353module_init(sb_init);
 354module_exit(sb_exit);
 355
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