LXR linux/sound/oss/pas2

   1/*
   2 * sound/oss/pas2_card.c
   3 *
   4 * Detection routine for the Pro Audio Spectrum cards.
   5 */
   6
   7#include <linux/init.h>
   8#include <linux/interrupt.h>
   9#include <linux/module.h>
  10#include <linux/spinlock.h>
  11#include "sound_config.h"
  12
  13#include "pas2.h"
  14#include "sb.h"
  15
  16static unsigned char dma_bits[] = {
  17        4, 1, 2, 3, 0, 5, 6, 7
  18};
  19
  20static unsigned char irq_bits[] = {
  21        0, 0, 1, 2, 3, 4, 5, 6, 0, 1, 7, 8, 9, 0, 10, 11
  22};
  23
  24static unsigned char sb_irq_bits[] = {
  25        0x00, 0x00, 0x08, 0x10, 0x00, 0x18, 0x00, 0x20, 
  26        0x00, 0x08, 0x28, 0x30, 0x38, 0, 0
  27};
  28
  29static unsigned char sb_dma_bits[] = {
  30        0x00, 0x40, 0x80, 0xC0, 0, 0, 0, 0
  31};
  32
  33/*
  34 * The Address Translation code is used to convert I/O register addresses to
  35 * be relative to the given base -register
  36 */
  37
  38int             pas_translate_code = 0;
  39static int      pas_intr_mask;
  40static int      pas_irq;
  41static int      pas_sb_base;
  42DEFINE_SPINLOCK(pas_lock);
  43#ifndef CONFIG_PAS_JOYSTICK
  44static int      joystick;
  45#else
  46static int      joystick = 1;
  47#endif
  48#ifdef SYMPHONY_PAS
  49static int      symphony = 1;
  50#else
  51static int      symphony;
  52#endif
  53#ifdef BROKEN_BUS_CLOCK
  54static int      broken_bus_clock = 1;
  55#else
  56static int      broken_bus_clock;
  57#endif
  58
  59static struct address_info cfg;
  60static struct address_info cfg2;
  61
  62char            pas_model = 0;
  63static char    *pas_model_names[] = {
  64        "", 
  65        "Pro AudioSpectrum+", 
  66        "CDPC", 
  67        "Pro AudioSpectrum 16", 
  68        "Pro AudioSpectrum 16D"
  69};
  70
  71/*
  72 * pas_read() and pas_write() are equivalents of inb and outb 
  73 * These routines perform the I/O address translation required
  74 * to support other than the default base address
  75 */
  76
  77extern void     mix_write(unsigned char data, int ioaddr);
  78
  79unsigned char pas_read(int ioaddr)
  80{
  81        return inb(ioaddr + pas_translate_code);
  82}
  83
  84void pas_write(unsigned char data, int ioaddr)
  85{
  86        outb((data), ioaddr + pas_translate_code);
  87}
  88
  89/******************* Begin of the Interrupt Handler ********************/
  90
  91static irqreturn_t pasintr(int irq, void *dev_id)
  92{
  93        int             status;
  94
  95        status = pas_read(0x0B89);
  96        pas_write(status, 0x0B89);      /* Clear interrupt */
  97
  98        if (status & 0x08)
  99        {
 100                  pas_pcm_interrupt(status, 1);
 101                  status &= ~0x08;
 102        }
 103        if (status & 0x10)
 104        {
 105                  pas_midi_interrupt();
 106                  status &= ~0x10;
 107        }
 108        return IRQ_HANDLED;
 109}
 110
 111int pas_set_intr(int mask)
 112{
 113        if (!mask)
 114                return 0;
 115
 116        pas_intr_mask |= mask;
 117
 118        pas_write(pas_intr_mask, 0x0B8B);
 119        return 0;
 120}
 121
 122int pas_remove_intr(int mask)
 123{
 124        if (!mask)
 125                return 0;
 126
 127        pas_intr_mask &= ~mask;
 128        pas_write(pas_intr_mask, 0x0B8B);
 129
 130        return 0;
 131}
 132
 133/******************* End of the Interrupt handler **********************/
 134
 135/******************* Begin of the Initialization Code ******************/
 136
 137static int __init config_pas_hw(struct address_info *hw_config)
 138{
 139        char            ok = 1;
 140        unsigned        int_ptrs;       /* scsi/sound interrupt pointers */
 141
 142        pas_irq = hw_config->irq;
 143
 144        pas_write(0x00, 0x0B8B);
 145        pas_write(0x36, 0x138B);
 146        pas_write(0x36, 0x1388);
 147        pas_write(0, 0x1388);
 148        pas_write(0x74, 0x138B);
 149        pas_write(0x74, 0x1389);
 150        pas_write(0, 0x1389);
 151
 152        pas_write(0x80 | 0x40 | 0x20 | 1, 0x0B8A);
 153        pas_write(0x80 | 0x20 | 0x10 | 0x08 | 0x01, 0xF8A);
 154        pas_write(0x01 | 0x02 | 0x04 | 0x10     /*
 155                                                 * |
 156                                                 * 0x80
 157                                                 */ , 0xB88);
 158
 159        pas_write(0x80
 160                  | joystick?0x40:0
 161                  ,0xF388);
 162
 163        if (pas_irq < 0 || pas_irq > 15)
 164        {
 165                printk(KERN_ERR "PAS16: Invalid IRQ %d", pas_irq);
 166                hw_config->irq=-1;
 167                ok = 0;
 168        }
 169        else
 170        {
 171                int_ptrs = pas_read(0xF38A);
 172                int_ptrs = (int_ptrs & 0xf0) | irq_bits[pas_irq];
 173                pas_write(int_ptrs, 0xF38A);
 174                if (!irq_bits[pas_irq])
 175                {
 176                        printk(KERN_ERR "PAS16: Invalid IRQ %d", pas_irq);
 177                        hw_config->irq=-1;
 178                        ok = 0;
 179                }
 180                else
 181                {
 182                        if (request_irq(pas_irq, pasintr, 0, "PAS16",hw_config) < 0) {
 183                                printk(KERN_ERR "PAS16: Cannot allocate IRQ %d\n",pas_irq);
 184                                hw_config->irq=-1;
 185                                ok = 0;
 186                        }
 187                }
 188        }
 189
 190        if (hw_config->dma < 0 || hw_config->dma > 7)
 191        {
 192                printk(KERN_ERR "PAS16: Invalid DMA selection %d", hw_config->dma);
 193                hw_config->dma=-1;
 194                ok = 0;
 195        }
 196        else
 197        {
 198                pas_write(dma_bits[hw_config->dma], 0xF389);
 199                if (!dma_bits[hw_config->dma])
 200                {
 201                        printk(KERN_ERR "PAS16: Invalid DMA selection %d", hw_config->dma);
 202                        hw_config->dma=-1;
 203                        ok = 0;
 204                }
 205                else
 206                {
 207                        if (sound_alloc_dma(hw_config->dma, "PAS16"))
 208                        {
 209                                printk(KERN_ERR "pas2_card.c: Can't allocate DMA channel\n");
 210                                hw_config->dma=-1;
 211                                ok = 0;
 212                        }
 213                }
 214        }
 215
 216        /*
 217         * This fixes the timing problems of the PAS due to the Symphony chipset
 218         * as per Media Vision.  Only define this if your PAS doesn't work correctly.
 219         */
 220
 221        if(symphony)
 222        {
 223                outb((0x05), 0xa8);
 224                outb((0x60), 0xa9);
 225        }
 226
 227        if(broken_bus_clock)
 228                pas_write(0x01 | 0x10 | 0x20 | 0x04, 0x8388);
 229        else
 230                /*
 231                 * pas_write(0x01, 0x8388);
 232                 */
 233                pas_write(0x01 | 0x10 | 0x20, 0x8388);
 234
 235        pas_write(0x18, 0x838A);        /* ??? */
 236        pas_write(0x20 | 0x01, 0x0B8A);         /* Mute off, filter = 17.897 kHz */
 237        pas_write(8, 0xBF8A);
 238
 239        mix_write(0x80 | 5, 0x078B);
 240        mix_write(5, 0x078B);
 241
 242        {
 243                struct address_info *sb_config;
 244
 245                sb_config = &cfg2;
 246                if (sb_config->io_base)
 247                {
 248                        unsigned char   irq_dma;
 249
 250                        /*
 251                         * Turn on Sound Blaster compatibility
 252                         * bit 1 = SB emulation
 253                         * bit 0 = MPU401 emulation (CDPC only :-( )
 254                         */
 255                        
 256                        pas_write(0x02, 0xF788);
 257
 258                        /*
 259                         * "Emulation address"
 260                         */
 261                        
 262                        pas_write((sb_config->io_base >> 4) & 0x0f, 0xF789);
 263                        pas_sb_base = sb_config->io_base;
 264
 265                        if (!sb_dma_bits[sb_config->dma])
 266                                printk(KERN_ERR "PAS16 Warning: Invalid SB DMA %d\n\n", sb_config->dma);
 267
 268                        if (!sb_irq_bits[sb_config->irq])
 269                                printk(KERN_ERR "PAS16 Warning: Invalid SB IRQ %d\n\n", sb_config->irq);
 270
 271                        irq_dma = sb_dma_bits[sb_config->dma] |
 272                                sb_irq_bits[sb_config->irq];
 273
 274                        pas_write(irq_dma, 0xFB8A);
 275                }
 276                else
 277                        pas_write(0x00, 0xF788);
 278        }
 279
 280        if (!ok)
 281                printk(KERN_WARNING "PAS16: Driver not enabled\n");
 282
 283        return ok;
 284}
 285
 286static int __init detect_pas_hw(struct address_info *hw_config)
 287{
 288        unsigned char   board_id, foo;
 289
 290        /*
 291         * WARNING: Setting an option like W:1 or so that disables warm boot reset
 292         * of the card will screw up this detect code something fierce. Adding code
 293         * to handle this means possibly interfering with other cards on the bus if
 294         * you have something on base port 0x388. SO be forewarned.
 295         */
 296
 297        outb((0xBC), 0x9A01);   /* Activate first board */
 298        outb((hw_config->io_base >> 2), 0x9A01);        /* Set base address */
 299        pas_translate_code = hw_config->io_base - 0x388;
 300        pas_write(1, 0xBF88);   /* Select one wait states */
 301
 302        board_id = pas_read(0x0B8B);
 303
 304        if (board_id == 0xff)
 305                return 0;
 306
 307        /*
 308         * We probably have a PAS-series board, now check for a PAS16-series board
 309         * by trying to change the board revision bits. PAS16-series hardware won't
 310         * let you do this - the bits are read-only.
 311         */
 312
 313        foo = board_id ^ 0xe0;
 314
 315        pas_write(foo, 0x0B8B);
 316        foo = pas_read(0x0B8B);
 317        pas_write(board_id, 0x0B8B);
 318
 319        if (board_id != foo)
 320                return 0;
 321
 322        pas_model = pas_read(0xFF88);
 323
 324        return pas_model;
 325}
 326
 327static void __init attach_pas_card(struct address_info *hw_config)
 328{
 329        pas_irq = hw_config->irq;
 330
 331        if (detect_pas_hw(hw_config))
 332        {
 333
 334                if ((pas_model = pas_read(0xFF88)))
 335                {
 336                        char            temp[100];
 337
 338                        sprintf(temp,
 339                            "%s rev %d", pas_model_names[(int) pas_model],
 340                                    pas_read(0x2789));
 341                        conf_printf(temp, hw_config);
 342                }
 343                if (config_pas_hw(hw_config))
 344                {
 345                        pas_pcm_init(hw_config);
 346                        pas_midi_init();
 347                        pas_init_mixer();
 348                }
 349        }
 350}
 351
 352static inline int __init probe_pas(struct address_info *hw_config)
 353{
 354        return detect_pas_hw(hw_config);
 355}
 356
 357static void __exit unload_pas(struct address_info *hw_config)
 358{
 359        extern int pas_audiodev;
 360        extern int pas2_mididev;
 361
 362        if (hw_config->dma>0)
 363                sound_free_dma(hw_config->dma);
 364        if (hw_config->irq>0)
 365                free_irq(hw_config->irq, hw_config);
 366
 367        if(pas_audiodev!=-1)
 368                sound_unload_mixerdev(audio_devs[pas_audiodev]->mixer_dev);
 369        if(pas2_mididev!=-1)
 370                sound_unload_mididev(pas2_mididev);
 371        if(pas_audiodev!=-1)
 372                sound_unload_audiodev(pas_audiodev);
 373}
 374
 375static int __initdata io        = -1;
 376static int __initdata irq       = -1;
 377static int __initdata dma       = -1;
 378static int __initdata dma16     = -1;   /* Set this for modules that need it */
 379
 380static int __initdata sb_io     = 0;
 381static int __initdata sb_irq    = -1;
 382static int __initdata sb_dma    = -1;
 383static int __initdata sb_dma16  = -1;
 384
 385module_param(io, int, 0);
 386module_param(irq, int, 0);
 387module_param(dma, int, 0);
 388module_param(dma16, int, 0);
 389
 390module_param(sb_io, int, 0);
 391module_param(sb_irq, int, 0);
 392module_param(sb_dma, int, 0);
 393module_param(sb_dma16, int, 0);
 394
 395module_param(joystick, bool, 0);
 396module_param(symphony, bool, 0);
 397module_param(broken_bus_clock, bool, 0);
 398
 399MODULE_LICENSE("GPL");
 400
 401static int __init init_pas2(void)
 402{
 403        printk(KERN_INFO "Pro Audio Spectrum driver Copyright (C) by Hannu Savolainen 1993-1996\n");
 404
 405        cfg.io_base = io;
 406        cfg.irq = irq;
 407        cfg.dma = dma;
 408        cfg.dma2 = dma16;
 409
 410        cfg2.io_base = sb_io;
 411        cfg2.irq = sb_irq;
 412        cfg2.dma = sb_dma;
 413        cfg2.dma2 = sb_dma16;
 414
 415        if (cfg.io_base == -1 || cfg.dma == -1 || cfg.irq == -1) {
 416                printk(KERN_INFO "I/O, IRQ, DMA and type are mandatory\n");
 417                return -EINVAL;
 418        }
 419
 420        if (!probe_pas(&cfg))
 421                return -ENODEV;
 422        attach_pas_card(&cfg);
 423
 424        return 0;
 425}
 426
 427static void __exit cleanup_pas2(void)
 428{
 429        unload_pas(&cfg);
 430}
 431
 432module_init(init_pas2);
 433module_exit(cleanup_pas2);
 434
 435#ifndef MODULE
 436static int __init setup_pas2(char *str)
 437{
 438        /* io, irq, dma, dma2, sb_io, sb_irq, sb_dma, sb_dma2 */
 439        int ints[9];
 440        
 441        str = get_options(str, ARRAY_SIZE(ints), ints);
 442
 443        io      = ints[1];
 444        irq     = ints[2];
 445        dma     = ints[3];
 446        dma16   = ints[4];
 447
 448        sb_io   = ints[5];
 449        sb_irq  = ints[6];
 450        sb_dma  = ints[7];
 451        sb_dma16 = ints[8];
 452
 453        return 1;
 454}
 455
 456__setup("pas2=", setup_pas2);
 457#endif
 458