sound/oss/mad16.c

   1 /*
   2  * Copyright (C) by Hannu Savolainen 1993-1997
   3  *
   4  * mad16.c
   5  *
   6  * Initialization code for OPTi MAD16 compatible audio chips. Including
   7  *
   8  *      OPTi 82C928     MAD16           (replaced by C929)
   9  *      OAK OTI-601D    Mozart
  10  *      OAK OTI-605     Mozart          (later version with MPU401 Midi)
  11  *      OPTi 82C929     MAD16 Pro
  12  *      OPTi 82C930
  13  *      OPTi 82C924
  14  *
  15  * These audio interface chips don't produce sound themselves. They just
  16  * connect some other components (OPL-[234] and a WSS compatible codec)
  17  * to the PC bus and perform I/O, DMA and IRQ address decoding. There is
  18  * also a UART for the MPU-401 mode (not 82C928/Mozart).
  19  * The Mozart chip appears to be compatible with the 82C928, although later
  20  * issues of the card, using the OTI-605 chip, have an MPU-401 compatable Midi
  21  * port. This port is configured differently to that of the OPTi audio chips.
  22  *
  23  *      Changes
  24  *
  25  *      Alan Cox                Clean up, added module selections.
  26  *
  27  *      A. Wik                  Added support for Opti924 PnP.
  28  *                              Improved debugging support.     16-May-1998
  29  *                              Fixed bug.                      16-Jun-1998
  30  *
  31  *      Torsten Duwe            Made Opti924 PnP support non-destructive
  32  *                                                              23-Dec-1998
  33  *
  34  *      Paul Grayson            Added support for Midi on later Mozart cards.
  35  *                                                              25-Nov-1999
  36  *      Christoph Hellwig       Adapted to module_init/module_exit.
  37  *      Arnaldo C. de Melo      got rid of attach_uart401       21-Sep-2000
  38  *
  39  *      Pavel Rabel             Clean up                           Nov-2000
  40  */
  41
  42 #include <linux/config.h>
  43 #include <linux/init.h>
  44 #include <linux/module.h>
  45 #include <linux/gameport.h>
  46 #include <linux/spinlock.h>
  47 #include "sound_config.h"
  48
  49 #include "ad1848.h"
  50 #include "sb.h"
  51 #include "mpu401.h"
  52
  53 static int      mad16_conf;
  54 static int      mad16_cdsel;
  55 static struct gameport gameport;
  56 static spinlock_t lock=SPIN_LOCK_UNLOCKED;
  57 static int      already_initialized = 0;
  58
  59 #define C928    1
  60 #define MOZART  2
  61 #define C929    3
  62 #define C930    4
  63 #define C924    5
  64
  65 /*
  66  *    Registers
  67  *
  68  *      The MAD16 occupies I/O ports 0xf8d to 0xf93 (fixed locations).
  69  *      All ports are inactive by default. They can be activated by
  70  *      writing 0xE2 or 0xE3 to the password register. The password is valid
  71  *      only until the next I/O read or write.
  72  *
  73  *      82C930 uses 0xE4 as the password and indirect addressing to access
  74  *      the config registers.
  75  */
  76
  77 #define MC0_PORT        0xf8c   /* Dummy port */
  78 #define MC1_PORT        0xf8d   /* SB address, CD-ROM interface type, joystick */
  79 #define MC2_PORT        0xf8e   /* CD-ROM address, IRQ, DMA, plus OPL4 bit */
  80 #define MC3_PORT        0xf8f
  81 #define PASSWD_REG      0xf8f
  82 #define MC4_PORT        0xf90
  83 #define MC5_PORT        0xf91
  84 #define MC6_PORT        0xf92
  85 #define MC7_PORT        0xf93
  86 #define MC8_PORT        0xf94
  87 #define MC9_PORT        0xf95
  88 #define MC10_PORT       0xf96
  89 #define MC11_PORT       0xf97
  90 #define MC12_PORT       0xf98
  91
  92 static int      board_type = C928;
  93
  94 static int     *mad16_osp;
  95 static int      c931_detected;  /* minor differences from C930 */
  96 static char     c924pnp = 0;    /* "     "           "    C924 */
  97 static int      debug = 0;      /* debugging output */
  98
  99 #ifdef DDB
 100 #undef DDB
 101 #endif
 102 #define DDB(x) {if (debug) x;}
 103
 104 static unsigned char mad_read(int port)
 105 {
 106         unsigned long flags;
 107         unsigned char tmp;
 108
 109         spin_lock_irqsave(&lock,flags);
 110
 111         switch (board_type)     /* Output password */
 112         {
 113                 case C928:
 114                 case MOZART:
 115                         outb((0xE2), PASSWD_REG);
 116                         break;
 117
 118                 case C929:
 119                         outb((0xE3), PASSWD_REG);
 120                         break;
 121
 122                 case C930:
 123                         /* outb(( 0xE4),  PASSWD_REG); */
 124                         break;
 125
 126                 case C924:
 127                         /* the c924 has its ports relocated by -128 if
 128                            PnP is enabled  -aw */
 129                         if (!c924pnp)
 130                                 outb((0xE5), PASSWD_REG); else
 131                                 outb((0xE5), PASSWD_REG - 0x80);
 132                         break;
 133         }
 134
 135         if (board_type == C930)
 136         {
 137                 outb((port - MC0_PORT), 0xe0e); /* Write to index reg */
 138                 tmp = inb(0xe0f);       /* Read from data reg */
 139         }
 140         else
 141                 if (!c924pnp)
 142                         tmp = inb(port); else
 143                         tmp = inb(port-0x80);
 144         spin_unlock_irqrestore(&lock,flags);
 145
 146         return tmp;
 147 }
 148
 149 static void mad_write(int port, int value)
 150 {
 151         unsigned long   flags;
 152
 153         spin_lock_irqsave(&lock,flags);
 154
 155         switch (board_type)     /* Output password */
 156         {
 157                 case C928:
 158                 case MOZART:
 159                         outb((0xE2), PASSWD_REG);
 160                         break;
 161
 162                 case C929:
 163                         outb((0xE3), PASSWD_REG);
 164                         break;
 165
 166                 case C930:
 167                         /* outb(( 0xE4),  PASSWD_REG); */
 168                         break;
 169
 170                 case C924:
 171                         if (!c924pnp)
 172                                 outb((0xE5), PASSWD_REG); else
 173                                 outb((0xE5), PASSWD_REG - 0x80);
 174                         break;
 175         }
 176
 177         if (board_type == C930)
 178         {
 179                 outb((port - MC0_PORT), 0xe0e); /* Write to index reg */
 180                 outb(((unsigned char) (value & 0xff)), 0xe0f);
 181         }
 182         else
 183                 if (!c924pnp)
 184                         outb(((unsigned char) (value & 0xff)), port); else
 185                         outb(((unsigned char) (value & 0xff)), port-0x80);
 186         spin_unlock_irqrestore(&lock,flags);
 187 }
 188
 189 static int __init detect_c930(void)
 190 {
 191         unsigned char   tmp = mad_read(MC1_PORT);
 192
 193         if ((tmp & 0x06) != 0x06)
 194         {
 195                 DDB(printk("Wrong C930 signature (%x)\n", tmp));
 196                 /* return 0; */
 197         }
 198         mad_write(MC1_PORT, 0);
 199
 200         if (mad_read(MC1_PORT) != 0x06)
 201         {
 202                 DDB(printk("Wrong C930 signature2 (%x)\n", tmp));
 203                 /* return 0; */
 204         }
 205         mad_write(MC1_PORT, tmp);       /* Restore bits */
 206
 207         mad_write(MC7_PORT, 0);
 208         if ((tmp = mad_read(MC7_PORT)) != 0)
 209         {
 210                 DDB(printk("MC7 not writable (%x)\n", tmp));
 211                 return 0;
 212         }
 213         mad_write(MC7_PORT, 0xcb);
 214         if ((tmp = mad_read(MC7_PORT)) != 0xcb)
 215         {
 216                 DDB(printk("MC7 not writable2 (%x)\n", tmp));
 217                 return 0;
 218         }
 219
 220         tmp = mad_read(MC0_PORT+18);
 221         if (tmp == 0xff || tmp == 0x00)
 222                 return 1;
 223         /* We probably have a C931 */
 224         DDB(printk("Detected C931 config=0x%02x\n", tmp));
 225         c931_detected = 1;
 226
 227         /*
 228          * We cannot configure the chip if it is in PnP mode.
 229          * If we have a CSN assigned (bit 8 in MC13) we first try
 230          * a software reset, then a software power off, finally
 231          * Clearing PnP mode. The last option is not
 232          * Bit 8 in MC13
 233          */
 234         if ((mad_read(MC0_PORT+13) & 0x80) == 0)
 235                 return 1;
 236
 237         /* Software reset */
 238         mad_write(MC9_PORT, 0x02);
 239         mad_write(MC9_PORT, 0x00);
 240
 241         if ((mad_read(MC0_PORT+13) & 0x80) == 0)
 242                 return 1;
 243
 244         /* Power off, and on again */
 245         mad_write(MC9_PORT, 0xc2);
 246         mad_write(MC9_PORT, 0xc0);
 247
 248         if ((mad_read(MC0_PORT+13) & 0x80) == 0)
 249                 return 1;
 250
 251 #if 0
 252         /* Force off PnP mode. This is not recommended because
 253          * the PnP bios will not recognize the chip on the next
 254          * warm boot and may assignd different resources to other
 255          * PnP/PCI cards.
 256          */
 257         mad_write(MC0_PORT+17, 0x04);
 258 #endif
 259         return 1;
 260 }
 261
 262 static int __init detect_mad16(void)
 263 {
 264         unsigned char tmp, tmp2, bit;
 265         int i, port;
 266
 267         /*
 268          * Check that reading a register doesn't return bus float (0xff)
 269          * when the card is accessed using password. This may fail in case
 270          * the card is in low power mode. Normally at least the power saving
 271          * mode bit should be 0.
 272          */
 273
 274         if ((tmp = mad_read(MC1_PORT)) == 0xff)
 275         {
 276                 DDB(printk("MC1_PORT returned 0xff\n"));
 277                 return 0;
 278         }
 279         for (i = 0xf8d; i <= 0xf98; i++)
 280                 if (!c924pnp)
 281                         DDB(printk("Port %0x (init value) = %0x\n", i, mad_read(i))) else
 282                         DDB(printk("Port %0x (init value) = %0x\n", i-0x80, mad_read(i)));
 283
 284         if (board_type == C930)
 285                 return detect_c930();
 286
 287         /*
 288          * Now check that the gate is closed on first I/O after writing
 289          * the password. (This is how a MAD16 compatible card works).
 290          */
 291
 292         if ((tmp2 = inb(MC1_PORT)) == tmp)      /* It didn't close */
 293         {
 294                 DDB(printk("MC1_PORT didn't close after read (0x%02x)\n", tmp2));
 295                 return 0;
 296         }
 297
 298         bit  = (c924pnp) ?     0x20 : 0x80;
 299         port = (c924pnp) ? MC2_PORT : MC1_PORT;
 300
 301         tmp = mad_read(port);
 302         mad_write(port, tmp ^ bit);     /* Toggle a bit */
 303         if ((tmp2 = mad_read(port)) != (tmp ^ bit))     /* Compare the bit */
 304         {
 305                 mad_write(port, tmp);   /* Restore */
 306                 DDB(printk("Bit revert test failed (0x%02x, 0x%02x)\n", tmp, tmp2));
 307                 return 0;
 308         }
 309         mad_write(port, tmp);   /* Restore */
 310         return 1;               /* Bingo */
 311 }
 312
 313 static int __init wss_init(struct address_info *hw_config)
 314 {
 315         int ad_flags = 0;
 316
 317         /*
 318          *    Verify the WSS parameters
 319          */
 320
 321         if (check_region(hw_config->io_base, 8))
 322         {
 323                 printk(KERN_ERR "MSS: I/O port conflict\n");
 324                 return 0;
 325         }
 326         if (!ad1848_detect(hw_config->io_base + 4, &ad_flags, mad16_osp))
 327                 return 0;
 328         /*
 329          * Check if the IO port returns valid signature. The original MS Sound
 330          * system returns 0x04 while some cards (AudioTrix Pro for example)
 331          * return 0x00.
 332          */
 333
 334         if ((inb(hw_config->io_base + 3) & 0x3f) != 0x04 &&
 335             (inb(hw_config->io_base + 3) & 0x3f) != 0x00)
 336         {
 337                 DDB(printk("No MSS signature detected on port 0x%x (0x%x)\n", hw_config->io_base, inb(hw_config->io_base + 3)));
 338                 return 0;
 339         }
 340         if (hw_config->irq > 11)
 341         {
 342                 printk(KERN_ERR "MSS: Bad IRQ %d\n", hw_config->irq);
 343                 return 0;
 344         }
 345         if (hw_config->dma != 0 && hw_config->dma != 1 && hw_config->dma != 3)
 346         {
 347                 printk(KERN_ERR "MSS: Bad DMA %d\n", hw_config->dma);
 348                 return 0;
 349         }
 350         /*
 351          * Check that DMA0 is not in use with a 8 bit board.
 352          */
 353
 354         if (hw_config->dma == 0 && inb(hw_config->io_base + 3) & 0x80)
 355         {
 356                 printk("MSS: Can't use DMA0 with a 8 bit card/slot\n");
 357                 return 0;
 358         }
 359         if (hw_config->irq > 7 && hw_config->irq != 9 && inb(hw_config->io_base + 3) & 0x80)
 360                 printk(KERN_ERR "MSS: Can't use IRQ%d with a 8 bit card/slot\n", hw_config->irq);
 361         return 1;
 362 }
 363
 364 static int __init init_c930(struct address_info *hw_config)
 365 {
 366         unsigned char cfg = 0;
 367
 368         if(c931_detected)
 369         {
 370                 /* Bit 0 has reversd meaning. Bits 1 and 2 sese
 371                    reversed on write.
 372                    Support only IDE cdrom. IDE port programmed
 373                    somewhere else. */
 374                 cfg =  (cfg & 0x09) ^ 0x07;
 375         }
 376
 377         switch (hw_config->io_base)
 378         {
 379                 case 0x530:
 380                         cfg |= 0x00;
 381                         break;
 382                 case 0xe80:
 383                         cfg |= 0x10;
 384                         break;
 385                 case 0xf40:
 386                         cfg |= 0x20;
 387                         break;
 388                 case 0x604:
 389                         cfg |= 0x30;
 390                         break;
 391                 default:
 392                         printk(KERN_ERR "MAD16: Invalid codec port %x\n", hw_config->io_base);
 393                         return 0;
 394         }
 395         mad_write(MC1_PORT, cfg);
 396
 397         /* MC2 is CD configuration. Don't touch it. */
 398
 399         mad_write(MC3_PORT, 0); /* Disable SB mode IRQ and DMA */
 400
 401         /* bit 2 of MC4 reverses it's meaning between the C930
 402            and the C931. */
 403         cfg = c931_detected ? 0x04 : 0x00;
 404
 405         mad_write(MC4_PORT, 0x52|cfg);
 406
 407         mad_write(MC5_PORT, 0x3C);      /* Init it into mode2 */
 408         mad_write(MC6_PORT, 0x02);      /* Enable WSS, Disable MPU and SB */
 409         mad_write(MC7_PORT, 0xCB);
 410         mad_write(MC10_PORT, 0x11);
 411
 412         return wss_init(hw_config);
 413 }
 414
 415 static int __init chip_detect(void)
 416 {
 417         int i;
 418
 419         /*
 420          *    Then try to detect with the old password
 421          */
 422         board_type = C924;
 423
 424         DDB(printk("Detect using password = 0xE5\n"));
 425
 426         if (detect_mad16()) {
 427                 return 1;
 428         }
 429
 430         board_type = C928;
 431
 432         DDB(printk("Detect using password = 0xE2\n"));
 433
 434         if (detect_mad16())
 435         {
 436                 unsigned char model;
 437
 438                 if (((model = mad_read(MC3_PORT)) & 0x03) == 0x03) {
 439                         DDB(printk("mad16.c: Mozart detected\n"));
 440                         board_type = MOZART;
 441                 } else {
 442                         DDB(printk("mad16.c: 82C928 detected???\n"));
 443                         board_type = C928;
 444                 }
 445                 return 1;
 446         }
 447
 448         board_type = C929;
 449
 450         DDB(printk("Detect using password = 0xE3\n"));
 451
 452         if (detect_mad16())
 453         {
 454                 DDB(printk("mad16.c: 82C929 detected\n"));
 455                 return 1;
 456         }
 457
 458         if (inb(PASSWD_REG) != 0xff)
 459                 return 0;
 460
 461         /*
 462          * First relocate MC# registers to 0xe0e/0xe0f, disable password
 463          */
 464
 465         outb((0xE4), PASSWD_REG);
 466         outb((0x80), PASSWD_REG);
 467
 468         board_type = C930;
 469
 470         DDB(printk("Detect using password = 0xE4\n"));
 471
 472         for (i = 0xf8d; i <= 0xf93; i++)
 473                 DDB(printk("port %03x = %02x\n", i, mad_read(i)));
 474
 475         if(detect_mad16()) {
 476                 DDB(printk("mad16.c: 82C930 detected\n"));
 477                 return 1;
 478         }
 479
 480         /* The C931 has the password reg at F8D */
 481         outb((0xE4), 0xF8D);
 482         outb((0x80), 0xF8D);
 483         DDB(printk("Detect using password = 0xE4 for C931\n"));
 484
 485         if (detect_mad16()) {
 486                 return 1;
 487         }
 488
 489         board_type = C924;
 490         c924pnp++;
 491         DDB(printk("Detect using password = 0xE5 (again), port offset -0x80\n"));
 492         if (detect_mad16()) {
 493                 DDB(printk("mad16.c: 82C924 PnP detected\n"));
 494                 return 1;
 495         }
 496
 497         c924pnp=0;
 498
 499         return 0;
 500 }
 501
 502 static int __init probe_mad16(struct address_info *hw_config)
 503 {
 504         int i;
 505         static int valid_ports[] =
 506         {
 507                 0x530, 0xe80, 0xf40, 0x604
 508         };
 509         unsigned char tmp;
 510         unsigned char cs4231_mode = 0;
 511
 512         int ad_flags = 0;
 513
 514         if (already_initialized)
 515                 return 0;
 516
 517         mad16_osp = hw_config->osp;
 518
 519         /*
 520          *    Check that all ports return 0xff (bus float) when no password
 521          *      is written to the password register.
 522          */
 523
 524         DDB(printk("--- Detecting MAD16 / Mozart ---\n"));
 525         if (!chip_detect())
 526                 return 0;
 527
 528         if (board_type == C930)
 529                 return init_c930(hw_config);
 530
 531
 532         for (i = 0xf8d; i <= 0xf93; i++)
 533                 if (!c924pnp)
 534                         DDB(printk("port %03x = %02x\n", i, mad_read(i))) else
 535                         DDB(printk("port %03x = %02x\n", i-0x80, mad_read(i)));
 536
 537 /*
 538  * Set the WSS address
 539  */
 540
 541         tmp = (mad_read(MC1_PORT) & 0x0f) | 0x80;       /* Enable WSS, Disable SB */
 542
 543         for (i = 0; i < 5; i++)
 544         {
 545                 if (i > 3)      /* Not a valid port */
 546                 {
 547                         printk(KERN_ERR "MAD16/Mozart: Bad WSS base address 0x%x\n", hw_config->io_base);
 548                         return 0;
 549                 }
 550                 if (valid_ports[i] == hw_config->io_base)
 551                 {
 552                         tmp |= i << 4;  /* WSS port select bits */
 553                         break;
 554                 }
 555         }
 556
 557         /*
 558          * Set optional CD-ROM and joystick settings.
 559          */
 560
 561         tmp &= ~0x0f;
 562         mad_write(MC1_PORT, tmp);
 563
 564         tmp = mad_read(MC2_PORT);
 565
 566         mad_write(MC2_PORT, tmp);
 567         mad_write(MC3_PORT, 0xf0);      /* Disable SB */
 568
 569         if (board_type == C924) /* Specific C924 init values */
 570         {
 571                 mad_write(MC4_PORT, 0xA0);
 572                 mad_write(MC5_PORT, 0x05);
 573                 mad_write(MC6_PORT, 0x03);
 574         }
 575         if (!ad1848_detect(hw_config->io_base + 4, &ad_flags, mad16_osp))
 576                 return 0;
 577
 578         if (ad_flags & (AD_F_CS4231 | AD_F_CS4248))
 579                 cs4231_mode = 0x02;     /* CS4248/CS4231 sync delay switch */
 580
 581         if (board_type == C929)
 582         {
 583                 mad_write(MC4_PORT, 0xa2);
 584                 mad_write(MC5_PORT, 0xA5 | cs4231_mode);
 585                 mad_write(MC6_PORT, 0x03);      /* Disable MPU401 */
 586         }
 587         else
 588         {
 589                 mad_write(MC4_PORT, 0x02);
 590                 mad_write(MC5_PORT, 0x30 | cs4231_mode);
 591         }
 592
 593         for (i = 0xf8d; i <= 0xf93; i++) if (!c924pnp)
 594                 DDB(printk("port %03x after init = %02x\n", i, mad_read(i))) else
 595                 DDB(printk("port %03x after init = %02x\n", i-0x80, mad_read(i)));
 596         wss_init(hw_config);
 597
 598         return 1;
 599 }
 600
 601 static void __init attach_mad16(struct address_info *hw_config)
 602 {
 603
 604         static signed char     interrupt_bits[12] = {
 605                 -1, -1, -1, -1, -1, -1, -1, 0x08, -1, 0x10, 0x18, 0x20
 606         };
 607         signed char bits;
 608
 609         static char     dma_bits[4] = {
 610                 1, 2, 0, 3
 611         };
 612
 613         int config_port = hw_config->io_base + 0, version_port = hw_config->io_base + 3;
 614         int ad_flags = 0, dma = hw_config->dma, dma2 = hw_config->dma2;
 615         unsigned char dma2_bit = 0;
 616
 617         already_initialized = 1;
 618
 619         if (!ad1848_detect(hw_config->io_base + 4, &ad_flags, mad16_osp))
 620                 return;
 621
 622         /*
 623          * Set the IRQ and DMA addresses.
 624          */
 625
 626         if (board_type == C930 || c924pnp)
 627                 interrupt_bits[5] = 0x28;       /* Also IRQ5 is possible on C930 */
 628
 629         bits = interrupt_bits[hw_config->irq];
 630         if (bits == -1)
 631                 return;
 632
 633         outb((bits | 0x40), config_port);
 634         if ((inb(version_port) & 0x40) == 0)
 635                 printk(KERN_ERR "[IRQ Conflict?]\n");
 636
 637         /*
 638          * Handle the capture DMA channel
 639          */
 640
 641         if (ad_flags & AD_F_CS4231 && dma2 != -1 && dma2 != dma)
 642         {
 643                 if (!((dma == 0 && dma2 == 1) ||
 644                         (dma == 1 && dma2 == 0) ||
 645                         (dma == 3 && dma2 == 0)))
 646                 {               /* Unsupported combination. Try to swap channels */
 647                         int tmp = dma;
 648
 649                         dma = dma2;
 650                         dma2 = tmp;
 651                 }
 652                 if ((dma == 0 && dma2 == 1) || (dma == 1 && dma2 == 0) ||
 653                         (dma == 3 && dma2 == 0))
 654                 {
 655                         dma2_bit = 0x04;        /* Enable capture DMA */
 656                 }
 657                 else
 658                 {
 659                         printk("MAD16: Invalid capture DMA\n");
 660                         dma2 = dma;
 661                 }
 662         }
 663         else dma2 = dma;
 664
 665         outb((bits | dma_bits[dma] | dma2_bit), config_port);   /* Write IRQ+DMA setup */
 666
 667         hw_config->slots[0] = ad1848_init("mad16 WSS", hw_config->io_base + 4,
 668                                           hw_config->irq,
 669                                           dma,
 670                                           dma2, 0,
 671                                           hw_config->osp,
 672                                           THIS_MODULE);
 673         request_region(hw_config->io_base, 4, "mad16 WSS config");
 674 }
 675
 676 static int __init probe_mad16_mpu(struct address_info *hw_config)
 677 {
 678         static int mpu_attached = 0;
 679         unsigned char tmp;
 680
 681         if (!already_initialized)       /* The MSS port must be initialized first */
 682                 return 0;
 683
 684         if (mpu_attached)               /* Don't let them call this twice */
 685                 return 0;
 686         mpu_attached = 1;
 687
 688         if (board_type < C929)  /* Early chip. No MPU support. Just SB MIDI */
 689         {
 690
 691 #ifdef CONFIG_MAD16_OLDCARD
 692
 693                 tmp = mad_read(MC3_PORT);
 694
 695                 /*
 696                  * MAD16 SB base is defined by the WSS base. It cannot be changed
 697                  * alone.
 698                  * Ignore configured I/O base. Use the active setting.
 699                  */
 700
 701                 if (mad_read(MC1_PORT) & 0x20)
 702                         hw_config->io_base = 0x240;
 703                 else
 704                         hw_config->io_base = 0x220;
 705
 706                 switch (hw_config->irq)
 707                 {
 708                         case 5:
 709                                 tmp = (tmp & 0x3f) | 0x80;
 710                                 break;
 711                         case 7:
 712                                 tmp = (tmp & 0x3f);
 713                                 break;
 714                         case 11:
 715                                 tmp = (tmp & 0x3f) | 0x40;
 716                                 break;
 717                         default:
 718                                 printk(KERN_ERR "mad16/Mozart: Invalid MIDI IRQ\n");
 719                                 return 0;
 720                 }
 721
 722                 mad_write(MC3_PORT, tmp | 0x04);
 723                 hw_config->driver_use_1 = SB_MIDI_ONLY;
 724                 if (!sb_dsp_detect(hw_config, 0, 0, NULL))
 725                         return 0;
 726
 727                 if (mad_read(MC1_PORT) & 0x20)
 728                         hw_config->io_base = 0x240;
 729                 else
 730                         hw_config->io_base = 0x220;
 731
 732                 hw_config->name = "Mad16/Mozart";
 733                 sb_dsp_init(hw_config, THIS_MODULE);
 734                 return 1;
 735 #else
 736                 /* assuming all later Mozart cards are identified as
 737                  * either 82C928 or Mozart. If so, following code attempts
 738                  * to set MPU register. TODO - add probing
 739                  */
 740
 741                 tmp = mad_read(MC8_PORT);
 742
 743                 switch (hw_config->irq)
 744                 {
 745                         case 5:
 746                                 tmp |= 0x08;
 747                                 break;
 748                         case 7:
 749                                 tmp |= 0x10;
 750                                 break;
 751                         case 9:
 752                                 tmp |= 0x18;
 753                                 break;
 754                         case 10:
 755                                 tmp |= 0x20;
 756                                 break;
 757                         case 11:
 758                                 tmp |= 0x28;
 759                                 break;
 760                         default:
 761                                 printk(KERN_ERR "mad16/MOZART: invalid mpu_irq\n");
 762                                 return 0;
 763                 }
 764
 765                 switch (hw_config->io_base)
 766                 {
 767                         case 0x300:
 768                                 tmp |= 0x01;
 769                                 break;
 770                         case 0x310:
 771                                 tmp |= 0x03;
 772                                 break;
 773                         case 0x320:
 774                                 tmp |= 0x05;
 775                                 break;
 776                         case 0x330:
 777                                 tmp |= 0x07;
 778                                 break;
 779                         default:
 780                                 printk(KERN_ERR "mad16/MOZART: invalid mpu_io\n");
 781                                 return 0;
 782                 }
 783
 784                 mad_write(MC8_PORT, tmp);       /* write MPU port parameters */
 785                 goto probe_401;
 786 #endif
 787         }
 788         tmp = mad_read(MC6_PORT) & 0x83;
 789         tmp |= 0x80;            /* MPU-401 enable */
 790
 791         /* Set the MPU base bits */
 792
 793         switch (hw_config->io_base)
 794         {
 795                 case 0x300:
 796                         tmp |= 0x60;
 797                         break;
 798                 case 0x310:
 799                         tmp |= 0x40;
 800                         break;
 801                 case 0x320:
 802                         tmp |= 0x20;
 803                         break;
 804                 case 0x330:
 805                         tmp |= 0x00;
 806                         break;
 807                 default:
 808                         printk(KERN_ERR "MAD16: Invalid MIDI port 0x%x\n", hw_config->io_base);
 809                         return 0;
 810         }
 811
 812         /* Set the MPU IRQ bits */
 813
 814         switch (hw_config->irq)
 815         {
 816                 case 5:
 817                         tmp |= 0x10;
 818                         break;
 819                 case 7:
 820                         tmp |= 0x18;
 821                         break;
 822                 case 9:
 823                         tmp |= 0x00;
 824                         break;
 825                 case 10:
 826                         tmp |= 0x08;
 827                         break;
 828                 default:
 829                         printk(KERN_ERR "MAD16: Invalid MIDI IRQ %d\n", hw_config->irq);
 830                         break;
 831         }
 832
 833         mad_write(MC6_PORT, tmp);       /* Write MPU401 config */
 834
 835 #ifndef CONFIG_MAD16_OLDCARD
 836 probe_401:
 837 #endif
 838         hw_config->driver_use_1 = SB_MIDI_ONLY;
 839         hw_config->name = "Mad16/Mozart";
 840         return probe_uart401(hw_config, THIS_MODULE);
 841 }
 842
 843 static void __exit unload_mad16(struct address_info *hw_config)
 844 {
 845         ad1848_unload(hw_config->io_base + 4,
 846                         hw_config->irq,
 847                         hw_config->dma,
 848                         hw_config->dma2, 0);
 849         release_region(hw_config->io_base, 4);
 850         sound_unload_audiodev(hw_config->slots[0]);
 851 }
 852
 853 static void __exit unload_mad16_mpu(struct address_info *hw_config)
 854 {
 855 #ifdef CONFIG_MAD16_OLDCARD
 856         if (board_type < C929)  /* Early chip. No MPU support. Just SB MIDI */
 857         {
 858                 sb_dsp_unload(hw_config, 0);
 859                 return;
 860         }
 861 #endif
 862
 863         unload_uart401(hw_config);
 864 }
 865
 866 static struct address_info cfg;
 867 static struct address_info cfg_mpu;
 868
 869 static int found_mpu;
 870
 871 static int __initdata mpu_io = 0;
 872 static int __initdata mpu_irq = 0;
 873 static int __initdata io = -1;
 874 static int __initdata dma = -1;
 875 static int __initdata dma16 = -1; /* Set this for modules that need it */
 876 static int __initdata irq = -1;
 877 static int __initdata cdtype = 0;
 878 static int __initdata cdirq = 0;
 879 static int __initdata cdport = 0x340;
 880 static int __initdata cddma = -1;
 881 static int __initdata opl4 = 0;
 882 static int __initdata joystick = 1;
 883
 884 MODULE_PARM(mpu_io, "i");
 885 MODULE_PARM(mpu_irq, "i");
 886 MODULE_PARM(io,"i");
 887 MODULE_PARM(dma,"i");
 888 MODULE_PARM(dma16,"i");
 889 MODULE_PARM(irq,"i");
 890 MODULE_PARM(cdtype,"i");
 891 MODULE_PARM(cdirq,"i");
 892 MODULE_PARM(cdport,"i");
 893 MODULE_PARM(cddma,"i");
 894 MODULE_PARM(opl4,"i");
 895 MODULE_PARM(joystick,"i");
 896 MODULE_PARM(debug,"i");
 897
 898 static int __initdata dma_map[2][8] =
 899 {
 900         {0x03, -1, -1, -1, -1, 0x00, 0x01, 0x02},
 901         {0x03, -1, 0x01, 0x00, -1, -1, -1, -1}
 902 };
 903
 904 static int __initdata irq_map[16] =
 905 {
 906         0x00, -1, -1, 0x0A,
 907         -1, 0x04, -1, 0x08,
 908         -1, 0x10, 0x14, 0x18,
 909         -1, -1, -1, -1
 910 };
 911
 912 static int __init init_mad16(void)
 913 {
 914         int dmatype = 0;
 915
 916         printk(KERN_INFO "MAD16 audio driver Copyright (C) by Hannu Savolainen 1993-1996\n");
 917
 918         printk(KERN_INFO "CDROM ");
 919         switch (cdtype)
 920         {
 921                 case 0x00:
 922                         printk("Disabled");
 923                         cdirq = 0;
 924                         break;
 925                 case 0x02:
 926                         printk("Sony CDU31A");
 927                         dmatype = 1;
 928                         if(cddma == -1) cddma = 3;
 929                         break;
 930                 case 0x04:
 931                         printk("Mitsumi");
 932                         dmatype = 0;
 933                         if(cddma == -1) cddma = 5;
 934                         break;
 935                 case 0x06:
 936                         printk("Panasonic Lasermate");
 937                         dmatype = 1;
 938                         if(cddma == -1) cddma = 3;
 939                         break;
 940                 case 0x08:
 941                         printk("Secondary IDE");
 942                         dmatype = 0;
 943                         if(cddma == -1) cddma = 5;
 944                         break;
 945                 case 0x0A:
 946                         printk("Primary IDE");
 947                         dmatype = 0;
 948                         if(cddma == -1) cddma = 5;
 949                         break;
 950                 default:
 951                         printk("\n");
 952                         printk(KERN_ERR "Invalid CDROM type\n");
 953                         return -EINVAL;
 954         }
 955
 956         /*
 957          *    Build the config words
 958          */
 959
 960         mad16_conf = (joystick ^ 1) | cdtype;
 961         mad16_cdsel = 0;
 962         if (opl4)
 963                 mad16_cdsel |= 0x20;
 964
 965         if(cdtype){
 966                 if (cddma > 7 || cddma < 0 || dma_map[dmatype][cddma] == -1)
 967                 {
 968                         printk("\n");
 969                         printk(KERN_ERR "Invalid CDROM DMA\n");
 970                         return -EINVAL;
 971                 }
 972                 if (cddma)
 973                         printk(", DMA %d", cddma);
 974                 else
 975                         printk(", no DMA");
 976
 977                 if (!cdirq)
 978                         printk(", no IRQ");
 979                 else if (cdirq < 0 || cdirq > 15 || irq_map[cdirq] == -1)
 980                 {
 981                         printk(", invalid IRQ (disabling)");
 982                         cdirq = 0;
 983                 }
 984                 else printk(", IRQ %d", cdirq);
 985
 986                 mad16_cdsel |= dma_map[dmatype][cddma];
 987
 988                 if (cdtype < 0x08)
 989                 {
 990                         switch (cdport)
 991                         {
 992                                 case 0x340:
 993                                         mad16_cdsel |= 0x00;
 994                                         break;
 995                                 case 0x330:
 996                                         mad16_cdsel |= 0x40;
 997                                         break;
 998                                 case 0x360:
 999                                         mad16_cdsel |= 0x80;
1000                                         break;
1001                                 case 0x320:
1002                                         mad16_cdsel |= 0xC0;
1003                                         break;
1004                                 default:
1005                                         printk(KERN_ERR "Unknown CDROM I/O base %d\n", cdport);
1006                                         return -EINVAL;
1007                         }
1008                 }
1009                 mad16_cdsel |= irq_map[cdirq];
1010         }
1011
1012         printk(".\n");
1013
1014         cfg.io_base = io;
1015         cfg.irq = irq;
1016         cfg.dma = dma;
1017         cfg.dma2 = dma16;
1018
1019         if (cfg.io_base == -1 || cfg.dma == -1 || cfg.irq == -1) {
1020                 printk(KERN_ERR "I/O, DMA and irq are mandatory\n");
1021                 return -EINVAL;
1022         }
1023
1024         if (!probe_mad16(&cfg))
1025                 return -ENODEV;
1026
1027         cfg_mpu.io_base = mpu_io;
1028         cfg_mpu.irq = mpu_irq;
1029
1030         attach_mad16(&cfg);
1031
1032         found_mpu = probe_mad16_mpu(&cfg_mpu);
1033
1034         if (joystick == 1) {
1035                 /* register gameport */
1036                 if (!request_region(0x201, 1, "mad16 gameport"))
1037                         printk(KERN_ERR "mad16: gameport address 0x201 already in use\n");
1038                 else {
1039                         printk(KERN_ERR "mad16: gameport enabled at 0x201\n");
1040                         gameport.io = 0x201;
1041                         gameport_register_port(&gameport);
1042                 }
1043         }
1044         else printk(KERN_ERR "mad16: gameport disabled.\n");
1045         return 0;
1046 }
1047
1048 static void __exit cleanup_mad16(void)
1049 {
1050         if (found_mpu)
1051                 unload_mad16_mpu(&cfg_mpu);
1052         unload_mad16(&cfg);
1053 }
1054
1055 module_init(init_mad16);
1056 module_exit(cleanup_mad16);
1057
1058 #ifndef MODULE
1059 static int __init setup_mad16(char *str)
1060 {
1061         /* io, irq */
1062         int ints[8];
1063
1064         str = get_options(str, ARRAY_SIZE(ints), ints);
1065
1066         io       = ints[1];
1067         irq      = ints[2];
1068         dma      = ints[3];
1069         dma16    = ints[4];
1070         mpu_io   = ints[5];
1071         mpu_irq  = ints[6];
1072         joystick = ints[7];
1073
1074         return 1;
1075 }
1076
1077 __setup("mad16=", setup_mad16);
1078 #endif
1079 MODULE_LICENSE("GPL");