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