drivers/sound/pas2

/* */
This source file includes following definitions.
pas_read
pas_write
pas2_msg
pasintr
pas_set_intr
pas_remove_intr
config_pas_hw
detect_pas_hw
attach_pas_card
probe_pas
   1 #define _PAS2_CARD_C_
   2 /*
   3  * sound/pas2_card.c
   4  *
   5  * Detection routine for the Pro Audio Spectrum cards.
   6  *
   7  * Copyright by Hannu Savolainen 1993
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions are
  11  * met: 1. Redistributions of source code must retain the above copyright
  12  * notice, this list of conditions and the following disclaimer. 2.
  13  * Redistributions in binary form must reproduce the above copyright notice,
  14  * this list of conditions and the following disclaimer in the documentation
  15  * and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
  18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  20  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  21  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  23  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  24  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  */
  30 
  31 #include "sound_config.h"
  32 
  33 #if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_PAS)
  34 
  35 #define DEFINE_TRANSLATIONS
  36 #include "pas.h"
  37 
  38 /*
  39  * The Address Translation code is used to convert I/O register addresses to
  40  * be relative to the given base -register
  41  */
  42 
  43 int             translat_code;
  44 static int      pas_intr_mask = 0;
  45 static int      pas_irq = 0;
  46 
  47 static char     pas_model;
  48 static char    *pas_model_names[] =
  49 {"", "Pro AudioSpectrum+", "CDPC", "Pro AudioSpectrum 16", "Pro AudioSpectrum 16D"};
  50 
  51 /*
  52  * pas_read() and pas_write() are equivalents of INB() and OUTB()
  53  */
  54 /*
  55  * These routines perform the I/O address translation required
  56  */
  57 /*
  58  * to support other than the default base address
  59  */
  60 
  61 unsigned char
  62 pas_read (int ioaddr)
     /*  */
  63 {
  64   return INB (ioaddr ^ translat_code);
  65 }
  66 
  67 void
  68 pas_write (unsigned char data, int ioaddr)
     /*  */
  69 {
  70   OUTB (data, ioaddr ^ translat_code);
  71 }
  72 
  73 void
  74 pas2_msg (char *foo)
     /*  */
  75 {
  76   printk ("    PAS2: %s.\n", foo);
  77 }
  78 
  79 /******************* Begin of the Interrupt Handler ********************/
  80 
  81 void
  82 pasintr (int unused, struct pt_regs * regs)
     /*  */
  83 {
  84   int             status;
  85 
  86   status = pas_read (INTERRUPT_STATUS);
  87   pas_write (status, INTERRUPT_STATUS); /*
  88                                                  * Clear interrupt
  89                                                  */
  90 
  91   if (status & I_S_PCM_SAMPLE_BUFFER_IRQ)
  92     {
  93 #ifndef EXCLUDE_AUDIO
  94       pas_pcm_interrupt (status, 1);
  95 #endif
  96       status &= ~I_S_PCM_SAMPLE_BUFFER_IRQ;
  97     }
  98   if (status & I_S_MIDI_IRQ)
  99     {
 100 #ifndef EXCLUDE_MIDI
 101 #ifdef EXCLUDE_PRO_MIDI
 102       pas_midi_interrupt ();
 103 #endif
 104 #endif
 105       status &= ~I_S_MIDI_IRQ;
 106     }
 107 
 108 }
 109 
 110 int
 111 pas_set_intr (int mask)
     /*  */
 112 {
 113   int             err;
 114 
 115   if (!mask)
 116     return 0;
 117 
 118   if (!pas_intr_mask)
 119     {
 120       if ((err = snd_set_irq_handler (pas_irq, pasintr)) < 0)
 121         return err;
 122     }
 123   pas_intr_mask |= mask;
 124 
 125   pas_write (pas_intr_mask, INTERRUPT_MASK);
 126   return 0;
 127 }
 128 
 129 int
 130 pas_remove_intr (int mask)
     /*  */
 131 {
 132   if (!mask)
 133     return 0;
 134 
 135   pas_intr_mask &= ~mask;
 136   pas_write (pas_intr_mask, INTERRUPT_MASK);
 137 
 138   if (!pas_intr_mask)
 139     {
 140       snd_release_irq (pas_irq);
 141     }
 142   return 0;
 143 }
 144 
 145 /******************* End of the Interrupt handler **********************/
 146 
 147 /******************* Begin of the Initialization Code ******************/
 148 
 149 int
 150 config_pas_hw (struct address_info *hw_config)
     /*  */
 151 {
 152   char            ok = 1;
 153   unsigned        int_ptrs;     /* scsi/sound interrupt pointers */
 154 
 155   pas_irq = hw_config->irq;
 156 
 157   pas_write (0x00, INTERRUPT_MASK);
 158 
 159   pas_write (0x36, SAMPLE_COUNTER_CONTROL);     /*
 160                                                  * Local timer control *
 161                                                  * register
 162                                                  */
 163 
 164   pas_write (0x36, SAMPLE_RATE_TIMER);  /*
 165                                          * Sample rate timer (16 bit)
 166                                          */
 167   pas_write (0, SAMPLE_RATE_TIMER);
 168 
 169   pas_write (0x74, SAMPLE_COUNTER_CONTROL);     /*
 170                                                  * Local timer control *
 171                                                  * register
 172                                                  */
 173 
 174   pas_write (0x74, SAMPLE_BUFFER_COUNTER);      /*
 175                                                  * Sample count register (16
 176                                                  * * bit)
 177                                                  */
 178   pas_write (0, SAMPLE_BUFFER_COUNTER);
 179 
 180   pas_write (F_F_PCM_BUFFER_COUNTER | F_F_PCM_RATE_COUNTER | F_F_MIXER_UNMUTE | 1, FILTER_FREQUENCY);
 181   pas_write (P_C_PCM_DMA_ENABLE | P_C_PCM_MONO | P_C_PCM_DAC_MODE | P_C_MIXER_CROSS_L_TO_L | P_C_MIXER_CROSS_R_TO_R, PCM_CONTROL);
 182   pas_write (S_M_PCM_RESET | S_M_FM_RESET | S_M_SB_RESET | S_M_MIXER_RESET      /*
 183                                                                                  * |
 184                                                                                  * S_M_OPL3_DUAL_MONO
 185                                                                                                                                                                                                                  */ , SERIAL_MIXER);
 186 
 187   pas_write (I_C_1_BOOT_RESET_ENABLE, IO_CONFIGURATION_1);
 188 
 189   if (pas_irq < 0 || pas_irq > 15)
 190     {
 191       printk ("PAS2: Invalid IRQ %d", pas_irq);
 192       ok = 0;
 193     }
 194   else
 195     {
 196       int_ptrs = pas_read (IO_CONFIGURATION_3);
 197       int_ptrs |= I_C_3_PCM_IRQ_translate[pas_irq] & 0xf;
 198       pas_write (int_ptrs, IO_CONFIGURATION_3);
 199       if (!I_C_3_PCM_IRQ_translate[pas_irq])
 200         {
 201           printk ("PAS2: Invalid IRQ %d", pas_irq);
 202           ok = 0;
 203         }
 204     }
 205 
 206   if (hw_config->dma < 0 || hw_config->dma > 7)
 207     {
 208       printk ("PAS2: Invalid DMA selection %d", hw_config->dma);
 209       ok = 0;
 210     }
 211   else
 212     {
 213       pas_write (I_C_2_PCM_DMA_translate[hw_config->dma], IO_CONFIGURATION_2);
 214       if (!I_C_2_PCM_DMA_translate[hw_config->dma])
 215         {
 216           printk ("PAS2: Invalid DMA selection %d", hw_config->dma);
 217           ok = 0;
 218         }
 219     }
 220 
 221   /*
 222  * This fixes the timing problems of the PAS due to the Symphony chipset
 223  * as per Media Vision.  Only define this if your PAS doesn't work correctly.
 224  */
 225 #ifdef SYMPHONY_PAS
 226   OUTB (0x05, 0xa8);
 227   OUTB (0x60, 0xa9);
 228 #endif
 229 
 230 #ifdef BROKEN_BUS_CLOCK
 231   pas_write (S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND | S_C_1_FM_EMULATE_CLOCK, SYSTEM_CONFIGURATION_1);
 232 #else
 233   /*
 234    * pas_write(S_C_1_PCS_ENABLE, SYSTEM_CONFIGURATION_1);
 235    */
 236   pas_write (S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND, SYSTEM_CONFIGURATION_1);
 237 #endif
 238   pas_write (0x18, SYSTEM_CONFIGURATION_3);     /*
 239                                                  * ???
 240                                                  */
 241 
 242   pas_write (F_F_MIXER_UNMUTE | 0x01, FILTER_FREQUENCY);        /*
 243                                                                  * Sets mute
 244                                                                  * off and *
 245                                                                  * selects
 246                                                                  * filter
 247                                                                  * rate * of
 248                                                                  * 17.897 kHz
 249                                                                  */
 250 
 251   if (pas_model == PAS_16 || pas_model == PAS_16D)
 252     pas_write (8, PRESCALE_DIVIDER);
 253   else
 254     pas_write (0, PRESCALE_DIVIDER);
 255 
 256   pas_write (P_M_MV508_ADDRESS | 5, PARALLEL_MIXER);
 257   pas_write (5, PARALLEL_MIXER);
 258 
 259 #if !defined(EXCLUDE_SB_EMULATION) || !defined(EXCLUDE_SB)
 260 
 261   {
 262     struct address_info *sb_config;
 263 
 264     if ((sb_config = sound_getconf (SNDCARD_SB)))
 265       {
 266         unsigned char   irq_dma;
 267 
 268         /*
 269          * Turn on Sound Blaster compatibility
 270          */
 271         /*
 272          * bit 1 = SB emulation
 273          */
 274         /*
 275          * bit 0 = MPU401 emulation (CDPC only :-( )
 276          */
 277         pas_write (0x02, COMPATIBILITY_ENABLE);
 278 
 279         /*
 280          * "Emulation address"
 281          */
 282         pas_write ((sb_config->io_base >> 4) & 0x0f, EMULATION_ADDRESS);
 283 
 284         if (!E_C_SB_DMA_translate[sb_config->dma])
 285           printk ("\n\nPAS16 Warning: Invalid SB DMA %d\n\n",
 286                   sb_config->dma);
 287 
 288         if (!E_C_SB_IRQ_translate[sb_config->irq])
 289           printk ("\n\nPAS16 Warning: Invalid SB IRQ %d\n\n",
 290                   sb_config->irq);
 291 
 292         irq_dma = E_C_SB_DMA_translate[sb_config->dma] |
 293           E_C_SB_IRQ_translate[sb_config->irq];
 294 
 295         pas_write (irq_dma, EMULATION_CONFIGURATION);
 296       }
 297   }
 298 #endif
 299 
 300   if (!ok)
 301     pas2_msg ("Driver not enabled");
 302 
 303   return ok;
 304 }
 305 
 306 int
 307 detect_pas_hw (struct address_info *hw_config)
     /*  */
 308 {
 309   unsigned char   board_id, foo;
 310 
 311   /*
 312    * WARNING: Setting an option like W:1 or so that disables warm boot reset
 313    * of the card will screw up this detect code something fierce. Adding code
 314    * to handle this means possibly interfering with other cards on the bus if
 315    * you have something on base port 0x388. SO be forewarned.
 316    */
 317 
 318   OUTB (0xBC, MASTER_DECODE);   /*
 319                                  * Talk to first board
 320                                  */
 321   OUTB (hw_config->io_base >> 2, MASTER_DECODE);        /*
 322                                                          * Set base address
 323                                                          */
 324   translat_code = PAS_DEFAULT_BASE ^ hw_config->io_base;
 325   pas_write (1, WAIT_STATE);    /*
 326                                  * One wait-state
 327                                  */
 328 
 329   board_id = pas_read (INTERRUPT_MASK);
 330 
 331   if (board_id == 0xff)
 332     return 0;
 333 
 334   /*
 335    * We probably have a PAS-series board, now check for a PAS2-series board
 336    * by trying to change the board revision bits. PAS2-series hardware won't
 337    * let you do this - the bits are read-only.
 338    */
 339 
 340   foo = board_id ^ 0xe0;
 341 
 342   pas_write (foo, INTERRUPT_MASK);
 343   foo = INB (INTERRUPT_MASK);
 344   pas_write (board_id, INTERRUPT_MASK);
 345 
 346   if (board_id != foo)          /*
 347                                  * Not a PAS2
 348                                  */
 349     return 0;
 350 
 351   pas_model = O_M_1_to_card[pas_read (OPERATION_MODE_1) & 0x0f];
 352 
 353   return pas_model;
 354 }
 355 
 356 long
 357 attach_pas_card (long mem_start, struct address_info *hw_config)
     /*  */
 358 {
 359   pas_irq = hw_config->irq;
 360 
 361   if (detect_pas_hw (hw_config))
 362     {
 363 
 364       if ((pas_model = O_M_1_to_card[pas_read (OPERATION_MODE_1) & 0x0f]))
 365         {
 366           printk (" <%s rev %d>", pas_model_names[(int) pas_model], pas_read (BOARD_REV_ID));
 367         }
 368 
 369       if (config_pas_hw (hw_config))
 370         {
 371 
 372 #ifndef EXCLUDE_AUDIO
 373           mem_start = pas_pcm_init (mem_start, hw_config);
 374 #endif
 375 
 376 #if !defined(EXCLUDE_SB_EMULATION) && !defined(EXCLUDE_SB)
 377 
 378           sb_dsp_disable_midi ();       /*
 379                                          * The SB emulation don't support *
 380                                          * midi
 381                                          */
 382 #endif
 383 
 384 #ifndef EXCLUDE_YM3812
 385           enable_opl3_mode (0x388, 0x38a, 0);
 386 #endif
 387 
 388 #ifndef EXCLUDE_MIDI
 389 #ifdef EXCLUDE_PRO_MIDI
 390           mem_start = pas_midi_init (mem_start);
 391 #endif
 392 #endif
 393 
 394           pas_init_mixer ();
 395         }
 396     }
 397 
 398   return mem_start;
 399 }
 400 
 401 int
 402 probe_pas (struct address_info *hw_config)
     /*  */
 403 {
 404   return detect_pas_hw (hw_config);
 405 }
 406 
 407 #endif
/* */
root/drivers/sound/pas2_card.c

DEFINITIONS
