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   1 /*
   2  * sound/awe_wave.c
   3  *
   4  * The low level driver for the AWE32/SB32/AWE64 wave table synth.
   5  *   version 0.4.4; Jan. 4, 2000
   6  *
   7  * Copyright (C) 1996-2000 Takashi Iwai
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24 /*
  25  * Changelog:
  26  * Aug 18, 2003, Adam Belay <ambx1@neo.rr.com>
  27  * - detection code rewrite
  28  */
  29
  30 #include <linux/awe_voice.h>
  31 #include <linux/config.h>
  32 #include <linux/init.h>
  33 #include <linux/module.h>
  34 #include <linux/string.h>
  35 #include <linux/pnp.h>
  36
  37 #include "sound_config.h"
  38
  39 #include "awe_wave.h"
  40 #include "awe_hw.h"
  41
  42 #ifdef AWE_HAS_GUS_COMPATIBILITY
  43 #include "tuning.h"
  44 #include <linux/ultrasound.h>
  45 #endif
  46
  47 /*
  48  * debug message
  49  */
  50
  51 #ifdef AWE_DEBUG_ON
  52 #define DEBUG(LVL,XXX)  {if (ctrls[AWE_MD_DEBUG_MODE] > LVL) { XXX; }}
  53 #define ERRMSG(XXX)     {if (ctrls[AWE_MD_DEBUG_MODE]) { XXX; }}
  54 #define FATALERR(XXX)   XXX
  55 #else
  56 #define DEBUG(LVL,XXX) /**/
  57 #define ERRMSG(XXX)     XXX
  58 #define FATALERR(XXX)   XXX
  59 #endif
  60
  61 /*
  62  * bank and voice record
  63  */
  64
  65 typedef struct _sf_list sf_list;
  66 typedef struct _awe_voice_list awe_voice_list;
  67 typedef struct _awe_sample_list awe_sample_list;
  68
  69 /* soundfont record */
  70 struct _sf_list {
  71         unsigned short sf_id;   /* id number */
  72         unsigned short type;    /* lock & shared flags */
  73         int num_info;           /* current info table index */
  74         int num_sample;         /* current sample table index */
  75         int mem_ptr;            /* current word byte pointer */
  76         awe_voice_list *infos, *last_infos;     /* instruments */
  77         awe_sample_list *samples, *last_samples;        /* samples */
  78 #ifdef AWE_ALLOW_SAMPLE_SHARING
  79         sf_list *shared;        /* shared list */
  80         unsigned char name[AWE_PATCH_NAME_LEN]; /* sharing id */
  81 #endif
  82         sf_list *next, *prev;
  83 };
  84
  85 /* instrument list */
  86 struct _awe_voice_list {
  87         awe_voice_info v;       /* instrument information */
  88         sf_list *holder;        /* parent sf_list of this record */
  89         unsigned char bank, instr;      /* preset number information */
  90         char type, disabled;    /* type=normal/mapped, disabled=boolean */
  91         awe_voice_list *next;   /* linked list with same sf_id */
  92         awe_voice_list *next_instr;     /* instrument list */
  93         awe_voice_list *next_bank;      /* hash table list */
  94 };
  95
  96 /* voice list type */
  97 #define V_ST_NORMAL     0
  98 #define V_ST_MAPPED     1
  99
 100 /* sample list */
 101 struct _awe_sample_list {
 102         awe_sample_info v;      /* sample information */
 103         sf_list *holder;        /* parent sf_list of this record */
 104         awe_sample_list *next;  /* linked list with same sf_id */
 105 };
 106
 107 /* sample and information table */
 108 static int current_sf_id;       /* current number of fonts */
 109 static int locked_sf_id;        /* locked position */
 110 static sf_list *sfhead, *sftail;        /* linked-lists */
 111
 112 #define awe_free_mem_ptr() (sftail ? sftail->mem_ptr : 0)
 113 #define awe_free_info() (sftail ? sftail->num_info : 0)
 114 #define awe_free_sample() (sftail ? sftail->num_sample : 0)
 115
 116 #define AWE_MAX_PRESETS         256
 117 #define AWE_DEFAULT_PRESET      0
 118 #define AWE_DEFAULT_BANK        0
 119 #define AWE_DEFAULT_DRUM        0
 120 #define AWE_DRUM_BANK           128
 121
 122 #define MAX_LAYERS      AWE_MAX_VOICES
 123
 124 /* preset table index */
 125 static awe_voice_list *preset_table[AWE_MAX_PRESETS];
 126
 127 /*
 128  * voice table
 129  */
 130
 131 /* effects table */
 132 typedef struct FX_Rec { /* channel effects */
 133         unsigned char flags[AWE_FX_END];
 134         short val[AWE_FX_END];
 135 } FX_Rec;
 136
 137
 138 /* channel parameters */
 139 typedef struct _awe_chan_info {
 140         int channel;            /* channel number */
 141         int bank;               /* current tone bank */
 142         int instr;              /* current program */
 143         int bender;             /* midi pitchbend (-8192 - 8192) */
 144         int bender_range;       /* midi bender range (x100) */
 145         int panning;            /* panning (0-127) */
 146         int main_vol;           /* channel volume (0-127) */
 147         int expression_vol;     /* midi expression (0-127) */
 148         int chan_press;         /* channel pressure */
 149         int sustained;          /* sustain status in MIDI */
 150         FX_Rec fx;              /* effects */
 151         FX_Rec fx_layer[MAX_LAYERS]; /* layer effects */
 152 } awe_chan_info;
 153
 154 /* voice parameters */
 155 typedef struct _voice_info {
 156         int state;
 157 #define AWE_ST_OFF              (1<<0)  /* no sound */
 158 #define AWE_ST_ON               (1<<1)  /* playing */
 159 #define AWE_ST_STANDBY          (1<<2)  /* stand by for playing */
 160 #define AWE_ST_SUSTAINED        (1<<3)  /* sustained */
 161 #define AWE_ST_MARK             (1<<4)  /* marked for allocation */
 162 #define AWE_ST_DRAM             (1<<5)  /* DRAM read/write */
 163 #define AWE_ST_FM               (1<<6)  /* reserved for FM */
 164 #define AWE_ST_RELEASED         (1<<7)  /* released */
 165
 166         int ch;                 /* midi channel */
 167         int key;                /* internal key for search */
 168         int layer;              /* layer number (for channel mode only) */
 169         int time;               /* allocated time */
 170         awe_chan_info   *cinfo; /* channel info */
 171
 172         int note;               /* midi key (0-127) */
 173         int velocity;           /* midi velocity (0-127) */
 174         int sostenuto;          /* sostenuto on/off */
 175         awe_voice_info *sample; /* assigned voice */
 176
 177         /* EMU8000 parameters */
 178         int apitch;             /* pitch parameter */
 179         int avol;               /* volume parameter */
 180         int apan;               /* panning parameter */
 181         int acutoff;            /* cutoff parameter */
 182         short aaux;             /* aux word */
 183 } voice_info;
 184
 185 /* voice information */
 186 static voice_info voices[AWE_MAX_VOICES];
 187
 188 #define IS_NO_SOUND(v)  (voices[v].state & (AWE_ST_OFF|AWE_ST_RELEASED|AWE_ST_STANDBY|AWE_ST_SUSTAINED))
 189 #define IS_NO_EFFECT(v) (voices[v].state != AWE_ST_ON)
 190 #define IS_PLAYING(v)   (voices[v].state & (AWE_ST_ON|AWE_ST_SUSTAINED|AWE_ST_RELEASED))
 191 #define IS_EMPTY(v)     (voices[v].state & (AWE_ST_OFF|AWE_ST_MARK|AWE_ST_DRAM|AWE_ST_FM))
 192
 193
 194 /* MIDI channel effects information (for hw control) */
 195 static awe_chan_info channels[AWE_MAX_CHANNELS];
 196
 197
 198 /*
 199  * global variables
 200  */
 201
 202 #ifndef AWE_DEFAULT_BASE_ADDR
 203 #define AWE_DEFAULT_BASE_ADDR   0       /* autodetect */
 204 #endif
 205
 206 #ifndef AWE_DEFAULT_MEM_SIZE
 207 #define AWE_DEFAULT_MEM_SIZE    -1      /* autodetect */
 208 #endif
 209
 210 static int io = AWE_DEFAULT_BASE_ADDR; /* Emu8000 base address */
 211 static int memsize = AWE_DEFAULT_MEM_SIZE; /* memory size in Kbytes */
 212 #ifdef CONFIG_PNP
 213 static int isapnp = -1;
 214 #else
 215 static int isapnp;
 216 #endif
 217
 218 MODULE_AUTHOR("Takashi Iwai <iwai@ww.uni-erlangen.de>");
 219 MODULE_DESCRIPTION("SB AWE32/64 WaveTable driver");
 220 MODULE_LICENSE("GPL");
 221
 222 module_param(io, int, 0);
 223 MODULE_PARM_DESC(io, "base i/o port of Emu8000");
 224 module_param(memsize, int, 0);
 225 MODULE_PARM_DESC(memsize, "onboard DRAM size in Kbytes");
 226 module_param(isapnp, bool, 0);
 227 MODULE_PARM_DESC(isapnp, "use ISAPnP detection");
 228
 229 /* DRAM start offset */
 230 static int awe_mem_start = AWE_DRAM_OFFSET;
 231
 232 /* maximum channels for playing */
 233 static int awe_max_voices = AWE_MAX_VOICES;
 234
 235 static int patch_opened;                /* sample already loaded? */
 236
 237 static char atten_relative = FALSE;
 238 static short atten_offset;
 239
 240 static int awe_present = FALSE;         /* awe device present? */
 241 static int awe_busy = FALSE;            /* awe device opened? */
 242
 243 static int my_dev = -1;
 244
 245 #define DEFAULT_DRUM_FLAGS      ((1 << 9) | (1 << 25))
 246 #define IS_DRUM_CHANNEL(c)      (drum_flags & (1 << (c)))
 247 #define DRUM_CHANNEL_ON(c)      (drum_flags |= (1 << (c)))
 248 #define DRUM_CHANNEL_OFF(c)     (drum_flags &= ~(1 << (c)))
 249 static unsigned int drum_flags = DEFAULT_DRUM_FLAGS; /* channel flags */
 250
 251 static int playing_mode = AWE_PLAY_INDIRECT;
 252 #define SINGLE_LAYER_MODE()     (playing_mode == AWE_PLAY_INDIRECT || playing_mode == AWE_PLAY_DIRECT)
 253 #define MULTI_LAYER_MODE()      (playing_mode == AWE_PLAY_MULTI || playing_mode == AWE_PLAY_MULTI2)
 254
 255 static int current_alloc_time;          /* voice allocation index for channel mode */
 256
 257 static struct synth_info awe_info = {
 258         "AWE32 Synth",          /* name */
 259         0,                      /* device */
 260         SYNTH_TYPE_SAMPLE,      /* synth_type */
 261         SAMPLE_TYPE_AWE32,      /* synth_subtype */
 262         0,                      /* perc_mode (obsolete) */
 263         AWE_MAX_VOICES,         /* nr_voices */
 264         0,                      /* nr_drums (obsolete) */
 265         400                     /* instr_bank_size */
 266 };
 267
 268
 269 static struct voice_alloc_info *voice_alloc;    /* set at initialization */
 270
 271
 272 /*
 273  * function prototypes
 274  */
 275
 276 static int awe_request_region(void);
 277 static void awe_release_region(void);
 278
 279 static void awe_reset_samples(void);
 280 /* emu8000 chip i/o access */
 281 static void setup_ports(int p1, int p2, int p3);
 282 static void awe_poke(unsigned short cmd, unsigned short port, unsigned short data);
 283 static void awe_poke_dw(unsigned short cmd, unsigned short port, unsigned int data);
 284 static unsigned short awe_peek(unsigned short cmd, unsigned short port);
 285 static unsigned int awe_peek_dw(unsigned short cmd, unsigned short port);
 286 static void awe_wait(unsigned short delay);
 287
 288 /* initialize emu8000 chip */
 289 static void awe_initialize(void);
 290
 291 /* set voice parameters */
 292 static void awe_init_ctrl_parms(int init_all);
 293 static void awe_init_voice_info(awe_voice_info *vp);
 294 static void awe_init_voice_parm(awe_voice_parm *pp);
 295 #ifdef AWE_HAS_GUS_COMPATIBILITY
 296 static int freq_to_note(int freq);
 297 static int calc_rate_offset(int Hz);
 298 /*static int calc_parm_delay(int msec);*/
 299 static int calc_parm_hold(int msec);
 300 static int calc_parm_attack(int msec);
 301 static int calc_parm_decay(int msec);
 302 static int calc_parm_search(int msec, short *table);
 303 #endif /* gus compat */
 304
 305 /* turn on/off note */
 306 static void awe_note_on(int voice);
 307 static void awe_note_off(int voice);
 308 static void awe_terminate(int voice);
 309 static void awe_exclusive_off(int voice);
 310 static void awe_note_off_all(int do_sustain);
 311
 312 /* calculate voice parameters */
 313 typedef void (*fx_affect_func)(int voice, int forced);
 314 static void awe_set_pitch(int voice, int forced);
 315 static void awe_set_voice_pitch(int voice, int forced);
 316 static void awe_set_volume(int voice, int forced);
 317 static void awe_set_voice_vol(int voice, int forced);
 318 static void awe_set_pan(int voice, int forced);
 319 static void awe_fx_fmmod(int voice, int forced);
 320 static void awe_fx_tremfrq(int voice, int forced);
 321 static void awe_fx_fm2frq2(int voice, int forced);
 322 static void awe_fx_filterQ(int voice, int forced);
 323 static void awe_calc_pitch(int voice);
 324 #ifdef AWE_HAS_GUS_COMPATIBILITY
 325 static void awe_calc_pitch_from_freq(int voice, int freq);
 326 #endif
 327 static void awe_calc_volume(int voice);
 328 static void awe_update_volume(void);
 329 static void awe_change_master_volume(short val);
 330 static void awe_voice_init(int voice, int init_all);
 331 static void awe_channel_init(int ch, int init_all);
 332 static void awe_fx_init(int ch);
 333 static void awe_send_effect(int voice, int layer, int type, int val);
 334 static void awe_modwheel_change(int voice, int value);
 335
 336 /* sequencer interface */
 337 static int awe_open(int dev, int mode);
 338 static void awe_close(int dev);
 339 static int awe_ioctl(int dev, unsigned int cmd, void __user * arg);
 340 static int awe_kill_note(int dev, int voice, int note, int velocity);
 341 static int awe_start_note(int dev, int v, int note_num, int volume);
 342 static int awe_set_instr(int dev, int voice, int instr_no);
 343 static int awe_set_instr_2(int dev, int voice, int instr_no);
 344 static void awe_reset(int dev);
 345 static void awe_hw_control(int dev, unsigned char *event);
 346 static int awe_load_patch(int dev, int format, const char __user *addr,
 347                           int offs, int count, int pmgr_flag);
 348 static void awe_aftertouch(int dev, int voice, int pressure);
 349 static void awe_controller(int dev, int voice, int ctrl_num, int value);
 350 static void awe_panning(int dev, int voice, int value);
 351 static void awe_volume_method(int dev, int mode);
 352 static void awe_bender(int dev, int voice, int value);
 353 static int awe_alloc(int dev, int chn, int note, struct voice_alloc_info *alloc);
 354 static void awe_setup_voice(int dev, int voice, int chn);
 355
 356 #define awe_key_pressure(dev,voice,key,press) awe_start_note(dev,voice,(key)+128,press)
 357
 358 /* hardware controls */
 359 #ifdef AWE_HAS_GUS_COMPATIBILITY
 360 static void awe_hw_gus_control(int dev, int cmd, unsigned char *event);
 361 #endif
 362 static void awe_hw_awe_control(int dev, int cmd, unsigned char *event);
 363 static void awe_voice_change(int voice, fx_affect_func func);
 364 static void awe_sostenuto_on(int voice, int forced);
 365 static void awe_sustain_off(int voice, int forced);
 366 static void awe_terminate_and_init(int voice, int forced);
 367
 368 /* voice search */
 369 static int awe_search_key(int bank, int preset, int note);
 370 static awe_voice_list *awe_search_instr(int bank, int preset, int note);
 371 static int awe_search_multi_voices(awe_voice_list *rec, int note, int velocity, awe_voice_info **vlist);
 372 static void awe_alloc_multi_voices(int ch, int note, int velocity, int key);
 373 static void awe_alloc_one_voice(int voice, int note, int velocity);
 374 static int awe_clear_voice(void);
 375
 376 /* load / remove patches */
 377 static int awe_open_patch(awe_patch_info *patch, const char __user *addr, int count);
 378 static int awe_close_patch(awe_patch_info *patch, const char __user *addr, int count);
 379 static int awe_unload_patch(awe_patch_info *patch, const char __user *addr, int count);
 380 static int awe_load_info(awe_patch_info *patch, const char __user *addr, int count);
 381 static int awe_remove_info(awe_patch_info *patch, const char __user *addr, int count);
 382 static int awe_load_data(awe_patch_info *patch, const char __user *addr, int count);
 383 static int awe_replace_data(awe_patch_info *patch, const char __user *addr, int count);
 384 static int awe_load_map(awe_patch_info *patch, const char __user *addr, int count);
 385 #ifdef AWE_HAS_GUS_COMPATIBILITY
 386 static int awe_load_guspatch(const char __user *addr, int offs, int size, int pmgr_flag);
 387 #endif
 388 /*static int awe_probe_info(awe_patch_info *patch, const char __user *addr, int count);*/
 389 static int awe_probe_data(awe_patch_info *patch, const char __user *addr, int count);
 390 static sf_list *check_patch_opened(int type, char *name);
 391 static int awe_write_wave_data(const char __user *addr, int offset, awe_sample_list *sp, int channels);
 392 static int awe_create_sf(int type, char *name);
 393 static void awe_free_sf(sf_list *sf);
 394 static void add_sf_info(sf_list *sf, awe_voice_list *rec);
 395 static void add_sf_sample(sf_list *sf, awe_sample_list *smp);
 396 static void purge_old_list(awe_voice_list *rec, awe_voice_list *next);
 397 static void add_info_list(awe_voice_list *rec);
 398 static void awe_remove_samples(int sf_id);
 399 static void rebuild_preset_list(void);
 400 static short awe_set_sample(awe_voice_list *rec);
 401 static awe_sample_list *search_sample_index(sf_list *sf, int sample);
 402
 403 static int is_identical_holder(sf_list *sf1, sf_list *sf2);
 404 #ifdef AWE_ALLOW_SAMPLE_SHARING
 405 static int is_identical_name(unsigned char *name, sf_list *p);
 406 static int is_shared_sf(unsigned char *name);
 407 static int info_duplicated(sf_list *sf, awe_voice_list *rec);
 408 #endif /* allow sharing */
 409
 410 /* lowlevel functions */
 411 static void awe_init_audio(void);
 412 static void awe_init_dma(void);
 413 static void awe_init_array(void);
 414 static void awe_send_array(unsigned short *data);
 415 static void awe_tweak_voice(int voice);
 416 static void awe_tweak(void);
 417 static void awe_init_fm(void);
 418 static int awe_open_dram_for_write(int offset, int channels);
 419 static void awe_open_dram_for_check(void);
 420 static void awe_close_dram(void);
 421 /*static void awe_write_dram(unsigned short c);*/
 422 static int awe_detect_base(int addr);
 423 static int awe_detect(void);
 424 static void awe_check_dram(void);
 425 static int awe_load_chorus_fx(awe_patch_info *patch, const char __user *addr, int count);
 426 static void awe_set_chorus_mode(int mode);
 427 static void awe_update_chorus_mode(void);
 428 static int awe_load_reverb_fx(awe_patch_info *patch, const char __user *addr, int count);
 429 static void awe_set_reverb_mode(int mode);
 430 static void awe_update_reverb_mode(void);
 431 static void awe_equalizer(int bass, int treble);
 432 static void awe_update_equalizer(void);
 433
 434 #ifdef CONFIG_AWE32_MIXER
 435 static void attach_mixer(void);
 436 static void unload_mixer(void);
 437 #endif
 438
 439 #ifdef CONFIG_AWE32_MIDIEMU
 440 static void attach_midiemu(void);
 441 static void unload_midiemu(void);
 442 #endif
 443
 444 #define limitvalue(x, a, b) if ((x) < (a)) (x) = (a); else if ((x) > (b)) (x) = (b)
 445
 446 /*
 447  * control parameters
 448  */
 449
 450
 451 #ifdef AWE_USE_NEW_VOLUME_CALC
 452 #define DEF_VOLUME_CALC TRUE
 453 #else
 454 #define DEF_VOLUME_CALC FALSE
 455 #endif /* new volume */
 456
 457 #define DEF_ZERO_ATTEN          32      /* 12dB below */
 458 #define DEF_MOD_SENSE           18
 459 #define DEF_CHORUS_MODE         2
 460 #define DEF_REVERB_MODE         4
 461 #define DEF_BASS_LEVEL          5
 462 #define DEF_TREBLE_LEVEL        9
 463
 464 static struct CtrlParmsDef {
 465         int value;
 466         int init_each_time;
 467         void (*update)(void);
 468 } ctrl_parms[AWE_MD_END] = {
 469         {0,0, NULL}, {0,0, NULL}, /* <-- not used */
 470         {AWE_VERSION_NUMBER, FALSE, NULL},
 471         {TRUE, FALSE, NULL}, /* exclusive */
 472         {TRUE, FALSE, NULL}, /* realpan */
 473         {AWE_DEFAULT_BANK, FALSE, NULL}, /* gusbank */
 474         {FALSE, TRUE, NULL}, /* keep effect */
 475         {DEF_ZERO_ATTEN, FALSE, awe_update_volume}, /* zero_atten */
 476         {FALSE, FALSE, NULL}, /* chn_prior */
 477         {DEF_MOD_SENSE, FALSE, NULL}, /* modwheel sense */
 478         {AWE_DEFAULT_PRESET, FALSE, NULL}, /* def_preset */
 479         {AWE_DEFAULT_BANK, FALSE, NULL}, /* def_bank */
 480         {AWE_DEFAULT_DRUM, FALSE, NULL}, /* def_drum */
 481         {FALSE, FALSE, NULL}, /* toggle_drum_bank */
 482         {DEF_VOLUME_CALC, FALSE, awe_update_volume}, /* new_volume_calc */
 483         {DEF_CHORUS_MODE, FALSE, awe_update_chorus_mode}, /* chorus mode */
 484         {DEF_REVERB_MODE, FALSE, awe_update_reverb_mode}, /* reverb mode */
 485         {DEF_BASS_LEVEL, FALSE, awe_update_equalizer}, /* bass level */
 486         {DEF_TREBLE_LEVEL, FALSE, awe_update_equalizer}, /* treble level */
 487         {0, FALSE, NULL},       /* debug mode */
 488         {FALSE, FALSE, NULL}, /* pan exchange */
 489 };
 490
 491 static int ctrls[AWE_MD_END];
 492
 493
 494 /*
 495  * synth operation table
 496  */
 497
 498 static struct synth_operations awe_operations =
 499 {
 500         .owner          = THIS_MODULE,
 501         .id             = "EMU8K",
 502         .info           = &awe_info,
 503         .midi_dev       = 0,
 504         .synth_type     = SYNTH_TYPE_SAMPLE,
 505         .synth_subtype  = SAMPLE_TYPE_AWE32,
 506         .open           = awe_open,
 507         .close          = awe_close,
 508         .ioctl          = awe_ioctl,
 509         .kill_note      = awe_kill_note,
 510         .start_note     = awe_start_note,
 511         .set_instr      = awe_set_instr_2,
 512         .reset          = awe_reset,
 513         .hw_control     = awe_hw_control,
 514         .load_patch     = awe_load_patch,
 515         .aftertouch     = awe_aftertouch,
 516         .controller     = awe_controller,
 517         .panning        = awe_panning,
 518         .volume_method  = awe_volume_method,
 519         .bender         = awe_bender,
 520         .alloc_voice    = awe_alloc,
 521         .setup_voice    = awe_setup_voice
 522 };
 523
 524 static void free_tables(void)
 525 {
 526         if (sftail) {
 527                 sf_list *p, *prev;
 528                 for (p = sftail; p; p = prev) {
 529                         prev = p->prev;
 530                         awe_free_sf(p);
 531                 }
 532         }
 533         sfhead = sftail = NULL;
 534 }
 535
 536 /*
 537  * clear sample tables
 538  */
 539
 540 static void
 541 awe_reset_samples(void)
 542 {
 543         /* free all bank tables */
 544         memset(preset_table, 0, sizeof(preset_table));
 545         free_tables();
 546
 547         current_sf_id = 0;
 548         locked_sf_id = 0;
 549         patch_opened = 0;
 550 }
 551
 552
 553 /*
 554  * EMU register access
 555  */
 556
 557 /* select a given AWE32 pointer */
 558 static int awe_ports[5];
 559 static int port_setuped = FALSE;
 560 static int awe_cur_cmd = -1;
 561 #define awe_set_cmd(cmd) \
 562 if (awe_cur_cmd != cmd) { outw(cmd, awe_ports[Pointer]); awe_cur_cmd = cmd; }
 563
 564 /* write 16bit data */
 565 static void
 566 awe_poke(unsigned short cmd, unsigned short port, unsigned short data)
 567 {
 568         awe_set_cmd(cmd);
 569         outw(data, awe_ports[port]);
 570 }
 571
 572 /* write 32bit data */
 573 static void
 574 awe_poke_dw(unsigned short cmd, unsigned short port, unsigned int data)
 575 {
 576         unsigned short addr = awe_ports[port];
 577         awe_set_cmd(cmd);
 578         outw(data, addr);               /* write lower 16 bits */
 579         outw(data >> 16, addr + 2);     /* write higher 16 bits */
 580 }
 581
 582 /* read 16bit data */
 583 static unsigned short
 584 awe_peek(unsigned short cmd, unsigned short port)
 585 {
 586         unsigned short k;
 587         awe_set_cmd(cmd);
 588         k = inw(awe_ports[port]);
 589         return k;
 590 }
 591
 592 /* read 32bit data */
 593 static unsigned int
 594 awe_peek_dw(unsigned short cmd, unsigned short port)
 595 {
 596         unsigned int k1, k2;
 597         unsigned short addr = awe_ports[port];
 598         awe_set_cmd(cmd);
 599         k1 = inw(addr);
 600         k2 = inw(addr + 2);
 601         k1 |= k2 << 16;
 602         return k1;
 603 }
 604
 605 /* wait delay number of AWE32 44100Hz clocks */
 606 #ifdef WAIT_BY_LOOP /* wait by loop -- that's not good.. */
 607 static void
 608 awe_wait(unsigned short delay)
 609 {
 610         unsigned short clock, target;
 611         unsigned short port = awe_ports[AWE_WC_Port];
 612         int counter;
 613
 614         /* sample counter */
 615         awe_set_cmd(AWE_WC_Cmd);
 616         clock = (unsigned short)inw(port);
 617         target = clock + delay;
 618         counter = 0;
 619         if (target < clock) {
 620                 for (; (unsigned short)inw(port) > target; counter++)
 621                         if (counter > 65536)
 622                                 break;
 623         }
 624         for (; (unsigned short)inw(port) < target; counter++)
 625                 if (counter > 65536)
 626                         break;
 627 }
 628 #else
 629
 630 static void awe_wait(unsigned short delay)
 631 {
 632         current->state = TASK_INTERRUPTIBLE;
 633         schedule_timeout((HZ*(unsigned long)delay + 44099)/44100);
 634 }
 635 /*
 636 static void awe_wait(unsigned short delay)
 637 {
 638         udelay(((unsigned long)delay * 1000000L + 44099) / 44100);
 639 }
 640 */
 641 #endif /* wait by loop */
 642
 643 /* write a word data */
 644 #define awe_write_dram(c)       awe_poke(AWE_SMLD, c)
 645
 646 /*
 647  * AWE32 voice parameters
 648  */
 649
 650 /* initialize voice_info record */
 651 static void
 652 awe_init_voice_info(awe_voice_info *vp)
 653 {
 654         vp->sample = 0;
 655         vp->rate_offset = 0;
 656
 657         vp->start = 0;
 658         vp->end = 0;
 659         vp->loopstart = 0;
 660         vp->loopend = 0;
 661         vp->mode = 0;
 662         vp->root = 60;
 663         vp->tune = 0;
 664         vp->low = 0;
 665         vp->high = 127;
 666         vp->vellow = 0;
 667         vp->velhigh = 127;
 668
 669         vp->fixkey = -1;
 670         vp->fixvel = -1;
 671         vp->fixpan = -1;
 672         vp->pan = -1;
 673
 674         vp->exclusiveClass = 0;
 675         vp->amplitude = 127;
 676         vp->attenuation = 0;
 677         vp->scaleTuning = 100;
 678
 679         awe_init_voice_parm(&vp->parm);
 680 }
 681
 682 /* initialize voice_parm record:
 683  * Env1/2: delay=0, attack=0, hold=0, sustain=0, decay=0, release=0.
 684  * Vibrato and Tremolo effects are zero.
 685  * Cutoff is maximum.
 686  * Chorus and Reverb effects are zero.
 687  */
 688 static void
 689 awe_init_voice_parm(awe_voice_parm *pp)
 690 {
 691         pp->moddelay = 0x8000;
 692         pp->modatkhld = 0x7f7f;
 693         pp->moddcysus = 0x7f7f;
 694         pp->modrelease = 0x807f;
 695         pp->modkeyhold = 0;
 696         pp->modkeydecay = 0;
 697
 698         pp->voldelay = 0x8000;
 699         pp->volatkhld = 0x7f7f;
 700         pp->voldcysus = 0x7f7f;
 701         pp->volrelease = 0x807f;
 702         pp->volkeyhold = 0;
 703         pp->volkeydecay = 0;
 704
 705         pp->lfo1delay = 0x8000;
 706         pp->lfo2delay = 0x8000;
 707         pp->pefe = 0;
 708
 709         pp->fmmod = 0;
 710         pp->tremfrq = 0;
 711         pp->fm2frq2 = 0;
 712
 713         pp->cutoff = 0xff;
 714         pp->filterQ = 0;
 715
 716         pp->chorus = 0;
 717         pp->reverb = 0;
 718 }
 719
 720
 721 #ifdef AWE_HAS_GUS_COMPATIBILITY
 722
 723 /* convert frequency mHz to abstract cents (= midi key * 100) */
 724 static int
 725 freq_to_note(int mHz)
 726 {
 727         /* abscents = log(mHz/8176) / log(2) * 1200 */
 728         unsigned int max_val = (unsigned int)0xffffffff / 10000;
 729         int i, times;
 730         unsigned int base;
 731         unsigned int freq;
 732         int note, tune;
 733
 734         if (mHz == 0)
 735                 return 0;
 736         if (mHz < 0)
 737                 return 12799; /* maximum */
 738
 739         freq = mHz;
 740         note = 0;
 741         for (base = 8176 * 2; freq >= base; base *= 2) {
 742                 note += 12;
 743                 if (note >= 128) /* over maximum */
 744                         return 12799;
 745         }
 746         base /= 2;
 747
 748         /* to avoid overflow... */
 749         times = 10000;
 750         while (freq > max_val) {
 751                 max_val *= 10;
 752                 times /= 10;
 753                 base /= 10;
 754         }
 755
 756         freq = freq * times / base;
 757         for (i = 0; i < 12; i++) {
 758                 if (freq < semitone_tuning[i+1])
 759                         break;
 760                 note++;
 761         }
 762
 763         tune = 0;
 764         freq = freq * 10000 / semitone_tuning[i];
 765         for (i = 0; i < 100; i++) {
 766                 if (freq < cent_tuning[i+1])
 767                         break;
 768                 tune++;
 769         }
 770
 771         return note * 100 + tune;
 772 }
 773
 774
 775 /* convert Hz to AWE32 rate offset:
 776  * sample pitch offset for the specified sample rate
 777  * rate=44100 is no offset, each 4096 is 1 octave (twice).
 778  * eg, when rate is 22050, this offset becomes -4096.
 779  */
 780 static int
 781 calc_rate_offset(int Hz)
 782 {
 783         /* offset = log(Hz / 44100) / log(2) * 4096 */
 784         int freq, base, i;
 785
 786         /* maybe smaller than max (44100Hz) */
 787         if (Hz <= 0 || Hz >= 44100) return 0;
 788
 789         base = 0;
 790         for (freq = Hz * 2; freq < 44100; freq *= 2)
 791                 base++;
 792         base *= 1200;
 793
 794         freq = 44100 * 10000 / (freq/2);
 795         for (i = 0; i < 12; i++) {
 796                 if (freq < semitone_tuning[i+1])
 797                         break;
 798                 base += 100;
 799         }
 800         freq = freq * 10000 / semitone_tuning[i];
 801         for (i = 0; i < 100; i++) {
 802                 if (freq < cent_tuning[i+1])
 803                         break;
 804                 base++;
 805         }
 806         return -base * 4096 / 1200;
 807 }
 808
 809
 810 /*
 811  * convert envelope time parameter to AWE32 raw parameter
 812  */
 813
 814 /* attack & decay/release time table (msec) */
 815 static short attack_time_tbl[128] = {
 816 32767, 32767, 5989, 4235, 2994, 2518, 2117, 1780, 1497, 1373, 1259, 1154, 1058, 970, 890, 816,
 817 707, 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377,
 818 361, 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188,
 819 180, 172, 165, 158, 151, 145, 139, 133, 127, 122, 117, 112, 107, 102, 98, 94,
 820 90, 86, 82, 79, 75, 72, 69, 66, 63, 61, 58, 56, 53, 51, 49, 47,
 821 45, 43, 41, 39, 37, 36, 34, 33, 31, 30, 29, 28, 26, 25, 24, 23,
 822 22, 21, 20, 19, 19, 18, 17, 16, 16, 15, 15, 14, 13, 13, 12, 12,
 823 11, 11, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 0,
 824 };
 825
 826 static short decay_time_tbl[128] = {
 827 32767, 32767, 22614, 15990, 11307, 9508, 7995, 6723, 5653, 5184, 4754, 4359, 3997, 3665, 3361, 3082,
 828 2828, 2765, 2648, 2535, 2428, 2325, 2226, 2132, 2042, 1955, 1872, 1793, 1717, 1644, 1574, 1507,
 829 1443, 1382, 1324, 1267, 1214, 1162, 1113, 1066, 978, 936, 897, 859, 822, 787, 754, 722,
 830 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377, 361,
 831 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188, 180,
 832 172, 165, 158, 151, 145, 139, 133, 127, 122, 117, 112, 107, 102, 98, 94, 90,
 833 86, 82, 79, 75, 72, 69, 66, 63, 61, 58, 56, 53, 51, 49, 47, 45,
 834 43, 41, 39, 37, 36, 34, 33, 31, 30, 29, 28, 26, 25, 24, 23, 22,
 835 };
 836
 837 #define calc_parm_delay(msec) (0x8000 - (msec) * 1000 / 725);
 838
 839 /* delay time = 0x8000 - msec/92 */
 840 static int
 841 calc_parm_hold(int msec)
 842 {
 843         int val = (0x7f * 92 - msec) / 92;
 844         if (val < 1) val = 1;
 845         if (val > 127) val = 127;
 846         return val;
 847 }
 848
 849 /* attack time: search from time table */
 850 static int
 851 calc_parm_attack(int msec)
 852 {
 853         return calc_parm_search(msec, attack_time_tbl);
 854 }
 855
 856 /* decay/release time: search from time table */
 857 static int
 858 calc_parm_decay(int msec)
 859 {
 860         return calc_parm_search(msec, decay_time_tbl);
 861 }
 862
 863 /* search an index for specified time from given time table */
 864 static int
 865 calc_parm_search(int msec, short *table)
 866 {
 867         int left = 1, right = 127, mid;
 868         while (left < right) {
 869                 mid = (left + right) / 2;
 870                 if (msec < (int)table[mid])
 871                         left = mid + 1;
 872                 else
 873                         right = mid;
 874         }
 875         return left;
 876 }
 877 #endif /* AWE_HAS_GUS_COMPATIBILITY */
 878
 879
 880 /*
 881  * effects table
 882  */
 883
 884 /* set an effect value */
 885 #define FX_FLAG_OFF     0
 886 #define FX_FLAG_SET     1
 887 #define FX_FLAG_ADD     2
 888
 889 #define FX_SET(rec,type,value) \
 890         ((rec)->flags[type] = FX_FLAG_SET, (rec)->val[type] = (value))
 891 #define FX_ADD(rec,type,value) \
 892         ((rec)->flags[type] = FX_FLAG_ADD, (rec)->val[type] = (value))
 893 #define FX_UNSET(rec,type) \
 894         ((rec)->flags[type] = FX_FLAG_OFF, (rec)->val[type] = 0)
 895
 896 /* check the effect value is set */
 897 #define FX_ON(rec,type) ((rec)->flags[type])
 898
 899 #define PARM_BYTE       0
 900 #define PARM_WORD       1
 901 #define PARM_SIGN       2
 902
 903 static struct PARM_DEFS {
 904         int type;       /* byte or word */
 905         int low, high;  /* value range */
 906         fx_affect_func realtime;        /* realtime paramater change */
 907 } parm_defs[] = {
 908         {PARM_WORD, 0, 0x8000, NULL},   /* env1 delay */
 909         {PARM_BYTE, 1, 0x7f, NULL},     /* env1 attack */
 910         {PARM_BYTE, 0, 0x7e, NULL},     /* env1 hold */
 911         {PARM_BYTE, 1, 0x7f, NULL},     /* env1 decay */
 912         {PARM_BYTE, 1, 0x7f, NULL},     /* env1 release */
 913         {PARM_BYTE, 0, 0x7f, NULL},     /* env1 sustain */
 914         {PARM_BYTE, 0, 0xff, NULL},     /* env1 pitch */
 915         {PARM_BYTE, 0, 0xff, NULL},     /* env1 cutoff */
 916
 917         {PARM_WORD, 0, 0x8000, NULL},   /* env2 delay */
 918         {PARM_BYTE, 1, 0x7f, NULL},     /* env2 attack */
 919         {PARM_BYTE, 0, 0x7e, NULL},     /* env2 hold */
 920         {PARM_BYTE, 1, 0x7f, NULL},     /* env2 decay */
 921         {PARM_BYTE, 1, 0x7f, NULL},     /* env2 release */
 922         {PARM_BYTE, 0, 0x7f, NULL},     /* env2 sustain */
 923
 924         {PARM_WORD, 0, 0x8000, NULL},   /* lfo1 delay */
 925         {PARM_BYTE, 0, 0xff, awe_fx_tremfrq},   /* lfo1 freq */
 926         {PARM_SIGN, -128, 127, awe_fx_tremfrq}, /* lfo1 volume */
 927         {PARM_SIGN, -128, 127, awe_fx_fmmod},   /* lfo1 pitch */
 928         {PARM_BYTE, 0, 0xff, awe_fx_fmmod},     /* lfo1 cutoff */
 929
 930         {PARM_WORD, 0, 0x8000, NULL},   /* lfo2 delay */
 931         {PARM_BYTE, 0, 0xff, awe_fx_fm2frq2},   /* lfo2 freq */
 932         {PARM_SIGN, -128, 127, awe_fx_fm2frq2}, /* lfo2 pitch */
 933
 934         {PARM_WORD, 0, 0xffff, awe_set_voice_pitch},    /* initial pitch */
 935         {PARM_BYTE, 0, 0xff, NULL},     /* chorus */
 936         {PARM_BYTE, 0, 0xff, NULL},     /* reverb */
 937         {PARM_BYTE, 0, 0xff, awe_set_volume},   /* initial cutoff */
 938         {PARM_BYTE, 0, 15, awe_fx_filterQ},     /* initial resonance */
 939
 940         {PARM_WORD, 0, 0xffff, NULL},   /* sample start */
 941         {PARM_WORD, 0, 0xffff, NULL},   /* loop start */
 942         {PARM_WORD, 0, 0xffff, NULL},   /* loop end */
 943         {PARM_WORD, 0, 0xffff, NULL},   /* coarse sample start */
 944         {PARM_WORD, 0, 0xffff, NULL},   /* coarse loop start */
 945         {PARM_WORD, 0, 0xffff, NULL},   /* coarse loop end */
 946         {PARM_BYTE, 0, 0xff, awe_set_volume},   /* initial attenuation */
 947 };
 948
 949
 950 static unsigned char
 951 FX_BYTE(FX_Rec *rec, FX_Rec *lay, int type, unsigned char value)
 952 {
 953         int effect = 0;
 954         int on = 0;
 955         if (lay && (on = FX_ON(lay, type)) != 0)
 956                 effect = lay->val[type];
 957         if (!on && (on = FX_ON(rec, type)) != 0)
 958                 effect = rec->val[type];
 959         if (on == FX_FLAG_ADD) {
 960                 if (parm_defs[type].type == PARM_SIGN) {
 961                         if (value > 0x7f)
 962                                 effect += (int)value - 0x100;
 963                         else
 964                                 effect += (int)value;
 965                 } else {
 966                         effect += (int)value;
 967                 }
 968         }
 969         if (on) {
 970                 if (effect < parm_defs[type].low)
 971                         effect = parm_defs[type].low;
 972                 else if (effect > parm_defs[type].high)
 973                         effect = parm_defs[type].high;
 974                 return (unsigned char)effect;
 975         }
 976         return value;
 977 }
 978
 979 /* get word effect value */
 980 static unsigned short
 981 FX_WORD(FX_Rec *rec, FX_Rec *lay, int type, unsigned short value)
 982 {
 983         int effect = 0;
 984         int on = 0;
 985         if (lay && (on = FX_ON(lay, type)) != 0)
 986                 effect = lay->val[type];
 987         if (!on && (on = FX_ON(rec, type)) != 0)
 988                 effect = rec->val[type];
 989         if (on == FX_FLAG_ADD)
 990                 effect += (int)value;
 991         if (on) {
 992                 if (effect < parm_defs[type].low)
 993                         effect = parm_defs[type].low;
 994                 else if (effect > parm_defs[type].high)
 995                         effect = parm_defs[type].high;
 996                 return (unsigned short)effect;
 997         }
 998         return value;
 999 }
1000
1001 /* get word (upper=type1/lower=type2) effect value */
1002 static unsigned short
1003 FX_COMB(FX_Rec *rec, FX_Rec *lay, int type1, int type2, unsigned short value)
1004 {
1005         unsigned short tmp;
1006         tmp = FX_BYTE(rec, lay, type1, (unsigned char)(value >> 8));
1007         tmp <<= 8;
1008         tmp |= FX_BYTE(rec, lay, type2, (unsigned char)(value & 0xff));
1009         return tmp;
1010 }
1011
1012 /* address offset */
1013 static int
1014 FX_OFFSET(FX_Rec *rec, FX_Rec *lay, int lo, int hi, int mode)
1015 {
1016         int addr = 0;
1017         if (lay && FX_ON(lay, hi))
1018                 addr = (short)lay->val[hi];
1019         else if (FX_ON(rec, hi))
1020                 addr = (short)rec->val[hi];
1021         addr = addr << 15;
1022         if (lay && FX_ON(lay, lo))
1023                 addr += (short)lay->val[lo];
1024         else if (FX_ON(rec, lo))
1025                 addr += (short)rec->val[lo];
1026         if (!(mode & AWE_SAMPLE_8BITS))
1027                 addr /= 2;
1028         return addr;
1029 }
1030
1031
1032 /*
1033  * turn on/off sample
1034  */
1035
1036 /* table for volume target calculation */
1037 static unsigned short voltarget[16] = {
1038    0xEAC0, 0XE0C8, 0XD740, 0XCE20, 0XC560, 0XBD08, 0XB500, 0XAD58,
1039    0XA5F8, 0X9EF0, 0X9830, 0X91C0, 0X8B90, 0X85A8, 0X8000, 0X7A90
1040 };
1041
1042 static void
1043 awe_note_on(int voice)
1044 {
1045         unsigned int temp;
1046         int addr;
1047         int vtarget, ftarget, ptarget, pitch;
1048         awe_voice_info *vp;
1049         awe_voice_parm_block *parm;
1050         FX_Rec *fx = &voices[voice].cinfo->fx;
1051         FX_Rec *fx_lay = NULL;
1052         if (voices[voice].layer < MAX_LAYERS)
1053                 fx_lay = &voices[voice].cinfo->fx_layer[voices[voice].layer];
1054
1055         /* A voice sample must assigned before calling */
1056         if ((vp = voices[voice].sample) == NULL || vp->index == 0)
1057                 return;
1058
1059         parm = (awe_voice_parm_block*)&vp->parm;
1060
1061         /* channel to be silent and idle */
1062         awe_poke(AWE_DCYSUSV(voice), 0x0080);
1063         awe_poke(AWE_VTFT(voice), 0x0000FFFF);
1064         awe_poke(AWE_CVCF(voice), 0x0000FFFF);
1065         awe_poke(AWE_PTRX(voice), 0);
1066         awe_poke(AWE_CPF(voice), 0);
1067
1068         /* set pitch offset */
1069         awe_set_pitch(voice, TRUE);
1070
1071         /* modulation & volume envelope */
1072         if (parm->modatk >= 0x80 && parm->moddelay >= 0x8000) {
1073                 awe_poke(AWE_ENVVAL(voice), 0xBFFF);
1074                 pitch = (parm->env1pit<<4) + voices[voice].apitch;
1075                 if (pitch > 0xffff) pitch = 0xffff;
1076                 /* calculate filter target */
1077                 ftarget = parm->cutoff + parm->env1fc;
1078                 limitvalue(ftarget, 0, 255);
1079                 ftarget <<= 8;
1080         } else {
1081                 awe_poke(AWE_ENVVAL(voice),
1082                          FX_WORD(fx, fx_lay, AWE_FX_ENV1_DELAY, parm->moddelay));
1083                 ftarget = parm->cutoff;
1084                 ftarget <<= 8;
1085                 pitch = voices[voice].apitch;
1086         }
1087
1088         /* calcualte pitch target */
1089         if (pitch != 0xffff) {
1090                 ptarget = 1 << (pitch >> 12);
1091                 if (pitch & 0x800) ptarget += (ptarget*0x102e)/0x2710;
1092                 if (pitch & 0x400) ptarget += (ptarget*0x764)/0x2710;
1093                 if (pitch & 0x200) ptarget += (ptarget*0x389)/0x2710;
1094                 ptarget += (ptarget>>1);
1095                 if (ptarget > 0xffff) ptarget = 0xffff;
1096
1097         } else ptarget = 0xffff;
1098         if (parm->modatk >= 0x80)
1099                 awe_poke(AWE_ATKHLD(voice),
1100                          FX_BYTE(fx, fx_lay, AWE_FX_ENV1_HOLD, parm->modhld) << 8 | 0x7f);
1101         else
1102                 awe_poke(AWE_ATKHLD(voice),
1103                          FX_COMB(fx, fx_lay, AWE_FX_ENV1_HOLD, AWE_FX_ENV1_ATTACK,
1104                                  vp->parm.modatkhld));
1105         awe_poke(AWE_DCYSUS(voice),
1106                  FX_COMB(fx, fx_lay, AWE_FX_ENV1_SUSTAIN, AWE_FX_ENV1_DECAY,
1107                           vp->parm.moddcysus));
1108
1109         if (parm->volatk >= 0x80 && parm->voldelay >= 0x8000) {
1110                 awe_poke(AWE_ENVVOL(voice), 0xBFFF);
1111                 vtarget = voltarget[voices[voice].avol%0x10]>>(voices[voice].avol>>4);
1112         } else {
1113                 awe_poke(AWE_ENVVOL(voice),
1114                          FX_WORD(fx, fx_lay, AWE_FX_ENV2_DELAY, vp->parm.voldelay));
1115                 vtarget = 0;
1116         }
1117         if (parm->volatk >= 0x80)
1118                 awe_poke(AWE_ATKHLDV(voice),
1119                          FX_BYTE(fx, fx_lay, AWE_FX_ENV2_HOLD, parm->volhld) << 8 | 0x7f);
1120         else
1121                 awe_poke(AWE_ATKHLDV(voice),
1122                          FX_COMB(fx, fx_lay, AWE_FX_ENV2_HOLD, AWE_FX_ENV2_ATTACK,
1123                          vp->parm.volatkhld));
1124         /* decay/sustain parameter for volume envelope must be set at last */
1125
1126         /* cutoff and volume */
1127         awe_set_volume(voice, TRUE);
1128
1129         /* modulation envelope heights */
1130         awe_poke(AWE_PEFE(voice),
1131                  FX_COMB(fx, fx_lay, AWE_FX_ENV1_PITCH, AWE_FX_ENV1_CUTOFF,
1132                          vp->parm.pefe));
1133
1134         /* lfo1/2 delay */
1135         awe_poke(AWE_LFO1VAL(voice),
1136                  FX_WORD(fx, fx_lay, AWE_FX_LFO1_DELAY, vp->parm.lfo1delay));
1137         awe_poke(AWE_LFO2VAL(voice),
1138                  FX_WORD(fx, fx_lay, AWE_FX_LFO2_DELAY, vp->parm.lfo2delay));
1139
1140         /* lfo1 pitch & cutoff shift */
1141         awe_fx_fmmod(voice, TRUE);
1142         /* lfo1 volume & freq */
1143         awe_fx_tremfrq(voice, TRUE);
1144         /* lfo2 pitch & freq */
1145         awe_fx_fm2frq2(voice, TRUE);
1146         /* pan & loop start */
1147         awe_set_pan(voice, TRUE);
1148
1149         /* chorus & loop end (chorus 8bit, MSB) */
1150         addr = vp->loopend - 1;
1151         addr += FX_OFFSET(fx, fx_lay, AWE_FX_LOOP_END,
1152                           AWE_FX_COARSE_LOOP_END, vp->mode);
1153         temp = FX_BYTE(fx, fx_lay, AWE_FX_CHORUS, vp->parm.chorus);
1154         temp = (temp <<24) | (unsigned int)addr;
1155         awe_poke_dw(AWE_CSL(voice), temp);
1156         DEBUG(4,printk("AWE32: [-- loopend=%x/%x]\n", vp->loopend, addr));
1157
1158         /* Q & current address (Q 4bit value, MSB) */
1159         addr = vp->start - 1;
1160         addr += FX_OFFSET(fx, fx_lay, AWE_FX_SAMPLE_START,
1161                           AWE_FX_COARSE_SAMPLE_START, vp->mode);
1162         temp = FX_BYTE(fx, fx_lay, AWE_FX_FILTERQ, vp->parm.filterQ);
1163         temp = (temp<<28) | (unsigned int)addr;
1164         awe_poke_dw(AWE_CCCA(voice), temp);
1165         DEBUG(4,printk("AWE32: [-- startaddr=%x/%x]\n", vp->start, addr));
1166
1167         /* clear unknown registers */
1168         awe_poke_dw(AWE_00A0(voice), 0);
1169         awe_poke_dw(AWE_0080(voice), 0);
1170
1171         /* reset volume */
1172         awe_poke_dw(AWE_VTFT(voice), (vtarget<<16)|ftarget);
1173         awe_poke_dw(AWE_CVCF(voice), (vtarget<<16)|ftarget);
1174
1175         /* set reverb */
1176         temp = FX_BYTE(fx, fx_lay, AWE_FX_REVERB, vp->parm.reverb);
1177         temp = (temp << 8) | (ptarget << 16) | voices[voice].aaux;
1178         awe_poke_dw(AWE_PTRX(voice), temp);
1179         awe_poke_dw(AWE_CPF(voice), ptarget << 16);
1180         /* turn on envelope */
1181         awe_poke(AWE_DCYSUSV(voice),
1182                  FX_COMB(fx, fx_lay, AWE_FX_ENV2_SUSTAIN, AWE_FX_ENV2_DECAY,
1183                           vp->parm.voldcysus));
1184
1185         voices[voice].state = AWE_ST_ON;
1186
1187         /* clear voice position for the next note on this channel */
1188         if (SINGLE_LAYER_MODE()) {
1189                 FX_UNSET(fx, AWE_FX_SAMPLE_START);
1190                 FX_UNSET(fx, AWE_FX_COARSE_SAMPLE_START);
1191         }
1192 }
1193
1194
1195 /* turn off the voice */
1196 static void
1197 awe_note_off(int voice)
1198 {
1199         awe_voice_info *vp;
1200         unsigned short tmp;
1201         FX_Rec *fx = &voices[voice].cinfo->fx;
1202         FX_Rec *fx_lay = NULL;
1203         if (voices[voice].layer < MAX_LAYERS)
1204                 fx_lay = &voices[voice].cinfo->fx_layer[voices[voice].layer];
1205
1206         if ((vp = voices[voice].sample) == NULL) {
1207                 voices[voice].state = AWE_ST_OFF;
1208                 return;
1209         }
1210
1211         tmp = 0x8000 | FX_BYTE(fx, fx_lay, AWE_FX_ENV1_RELEASE,
1212                                (unsigned char)vp->parm.modrelease);
1213         awe_poke(AWE_DCYSUS(voice), tmp);
1214         tmp = 0x8000 | FX_BYTE(fx, fx_lay, AWE_FX_ENV2_RELEASE,
1215                                (unsigned char)vp->parm.volrelease);
1216         awe_poke(AWE_DCYSUSV(voice), tmp);
1217         voices[voice].state = AWE_ST_RELEASED;
1218 }
1219
1220 /* force to terminate the voice (no releasing echo) */
1221 static void
1222 awe_terminate(int voice)
1223 {
1224         awe_poke(AWE_DCYSUSV(voice), 0x807F);
1225         awe_tweak_voice(voice);
1226         voices[voice].state = AWE_ST_OFF;
1227 }
1228
1229 /* turn off other voices with the same exclusive class (for drums) */
1230 static void
1231 awe_exclusive_off(int voice)
1232 {
1233         int i, exclass;
1234
1235         if (voices[voice].sample == NULL)
1236                 return;
1237         if ((exclass = voices[voice].sample->exclusiveClass) == 0)
1238                 return; /* not exclusive */
1239
1240         /* turn off voices with the same class */
1241         for (i = 0; i < awe_max_voices; i++) {
1242                 if (i != voice && IS_PLAYING(i) &&
1243                     voices[i].sample && voices[i].ch == voices[voice].ch &&
1244                     voices[i].sample->exclusiveClass == exclass) {
1245                         DEBUG(4,printk("AWE32: [exoff(%d)]\n", i));
1246                         awe_terminate(i);
1247                         awe_voice_init(i, TRUE);
1248                 }
1249         }
1250 }
1251
1252
1253 /*
1254  * change the parameters of an audible voice
1255  */
1256
1257 /* change pitch */
1258 static void
1259 awe_set_pitch(int voice, int forced)
1260 {
1261         if (IS_NO_EFFECT(voice) && !forced) return;
1262         awe_poke(AWE_IP(voice), voices[voice].apitch);
1263         DEBUG(3,printk("AWE32: [-- pitch=%x]\n", voices[voice].apitch));
1264 }
1265
1266 /* calculate & change pitch */
1267 static void
1268 awe_set_voice_pitch(int voice, int forced)
1269 {
1270         awe_calc_pitch(voice);
1271         awe_set_pitch(voice, forced);
1272 }
1273
1274 /* change volume & cutoff */
1275 static void
1276 awe_set_volume(int voice, int forced)
1277 {
1278         awe_voice_info *vp;
1279         unsigned short tmp2;
1280         FX_Rec *fx = &voices[voice].cinfo->fx;
1281         FX_Rec *fx_lay = NULL;
1282         if (voices[voice].layer < MAX_LAYERS)
1283                 fx_lay = &voices[voice].cinfo->fx_layer[voices[voice].layer];
1284
1285         if (!IS_PLAYING(voice) && !forced) return;
1286         if ((vp = voices[voice].sample) == NULL || vp->index == 0)
1287                 return;
1288
1289         tmp2 = FX_BYTE(fx, fx_lay, AWE_FX_CUTOFF,
1290                        (unsigned char)voices[voice].acutoff);
1291         tmp2 = (tmp2 << 8);
1292         tmp2 |= FX_BYTE(fx, fx_lay, AWE_FX_ATTEN,
1293                         (unsigned char)voices[voice].avol);
1294         awe_poke(AWE_IFATN(voice), tmp2);
1295 }
1296
1297 /* calculate & change volume */
1298 static void
1299 awe_set_voice_vol(int voice, int forced)
1300 {
1301         if (IS_EMPTY(voice))
1302                 return;
1303         awe_calc_volume(voice);
1304         awe_set_volume(voice, forced);
1305 }
1306
1307
1308 /* change pan; this could make a click noise.. */
1309 static void
1310 awe_set_pan(int voice, int forced)
1311 {
1312         unsigned int temp;
1313         int addr;
1314         awe_voice_info *vp;
1315         FX_Rec *fx = &voices[voice].cinfo->fx;
1316         FX_Rec *fx_lay = NULL;
1317         if (voices[voice].layer < MAX_LAYERS)
1318                 fx_lay = &voices[voice].cinfo->fx_layer[voices[voice].layer];
1319
1320         if (IS_NO_EFFECT(voice) && !forced) return;
1321         if ((vp = voices[voice].sample) == NULL || vp->index == 0)
1322                 return;
1323
1324         /* pan & loop start (pan 8bit, MSB, 0:right, 0xff:left) */
1325         if (vp->fixpan > 0)     /* 0-127 */
1326                 temp = 255 - (int)vp->fixpan * 2;
1327         else {
1328                 int pos = 0;
1329                 if (vp->pan >= 0) /* 0-127 */
1330                         pos = (int)vp->pan * 2 - 128;
1331                 pos += voices[voice].cinfo->panning; /* -128 - 127 */
1332                 temp = 127 - pos;
1333         }
1334         limitvalue(temp, 0, 255);
1335         if (ctrls[AWE_MD_PAN_EXCHANGE]) {
1336                 temp = 255 - temp;
1337         }
1338         if (forced || temp != voices[voice].apan) {
1339                 voices[voice].apan = temp;
1340                 if (temp == 0)
1341                         voices[voice].aaux = 0xff;
1342                 else
1343                         voices[voice].aaux = (-temp) & 0xff;
1344                 addr = vp->loopstart - 1;
1345                 addr += FX_OFFSET(fx, fx_lay, AWE_FX_LOOP_START,
1346                                   AWE_FX_COARSE_LOOP_START, vp->mode);
1347                 temp = (temp<<24) | (unsigned int)addr;
1348                 awe_poke_dw(AWE_PSST(voice), temp);
1349                 DEBUG(4,printk("AWE32: [-- loopstart=%x/%x]\n", vp->loopstart, addr));
1350         }
1351 }
1352
1353 /* effects change during playing */
1354 static void
1355 awe_fx_fmmod(int voice, int forced)
1356 {
1357         awe_voice_info *vp;
1358         FX_Rec *fx = &voices[voice].cinfo->fx;
1359         FX_Rec *fx_lay = NULL;
1360         if (voices[voice].layer < MAX_LAYERS)
1361                 fx_lay = &voices[voice].cinfo->fx_layer[voices[voice].layer];
1362
1363         if (IS_NO_EFFECT(voice) && !forced) return;
1364         if ((vp = voices[voice].sample) == NULL || vp->index == 0)
1365                 return;
1366         awe_poke(AWE_FMMOD(voice),
1367                  FX_COMB(fx, fx_lay, AWE_FX_LFO1_PITCH, AWE_FX_LFO1_CUTOFF,
1368                          vp->parm.fmmod));
1369 }
1370
1371 /* set tremolo (lfo1) volume & frequency */
1372 static void
1373 awe_fx_tremfrq(int voice, int forced)
1374 {
1375         awe_voice_info *vp;
1376         FX_Rec *fx = &voices[voice].cinfo->fx;
1377         FX_Rec *fx_lay = NULL;
1378         if (voices[voice].layer < MAX_LAYERS)
1379                 fx_lay = &voices[voice].cinfo->fx_layer[voices[voice].layer];
1380
1381         if (IS_NO_EFFECT(voice) && !forced) return;
1382         if ((vp = voices[voice].sample) == NULL || vp->index == 0)
1383                 return;
1384         awe_poke(AWE_TREMFRQ(voice),
1385                  FX_COMB(fx, fx_lay, AWE_FX_LFO1_VOLUME, AWE_FX_LFO1_FREQ,
1386                          vp->parm.tremfrq));
1387 }
1388
1389 /* set lfo2 pitch & frequency */
1390 static void
1391 awe_fx_fm2frq2(int voice, int forced)
1392 {
1393         awe_voice_info *vp;
1394         FX_Rec *fx = &voices[voice].cinfo->fx;
1395         FX_Rec *fx_lay = NULL;
1396         if (voices[voice].layer < MAX_LAYERS)
1397                 fx_lay = &voices[voice].cinfo->fx_layer[voices[voice].layer];
1398
1399         if (IS_NO_EFFECT(voice) && !forced) return;
1400         if ((vp = voices[voice].sample) == NULL || vp->index == 0)
1401                 return;
1402         awe_poke(AWE_FM2FRQ2(voice),
1403                  FX_COMB(fx, fx_lay, AWE_FX_LFO2_PITCH, AWE_FX_LFO2_FREQ,
1404                          vp->parm.fm2frq2));
1405 }
1406
1407
1408 /* Q & current address (Q 4bit value, MSB) */
1409 static void
1410 awe_fx_filterQ(int voice, int forced)
1411 {
1412         unsigned int addr;
1413         awe_voice_info *vp;
1414         FX_Rec *fx = &voices[voice].cinfo->fx;
1415         FX_Rec *fx_lay = NULL;
1416         if (voices[voice].layer < MAX_LAYERS)
1417                 fx_lay = &voices[voice].cinfo->fx_layer[voices[voice].layer];
1418
1419         if (IS_NO_EFFECT(voice) && !forced) return;
1420         if ((vp = voices[voice].sample) == NULL || vp->index == 0)
1421                 return;
1422
1423         addr = awe_peek_dw(AWE_CCCA(voice)) & 0xffffff;
1424         addr |= (FX_BYTE(fx, fx_lay, AWE_FX_FILTERQ, vp->parm.filterQ) << 28);
1425         awe_poke_dw(AWE_CCCA(voice), addr);
1426 }
1427
1428 /*
1429  * calculate pitch offset
1430  *
1431  * 0xE000 is no pitch offset at 44100Hz sample.
1432  * Every 4096 is one octave.
1433  */
1434
1435 static void
1436 awe_calc_pitch(int voice)
1437 {
1438         voice_info *vp = &voices[voice];
1439         awe_voice_info *ap;
1440         awe_chan_info *cp = voices[voice].cinfo;
1441         int offset;
1442
1443         /* search voice information */
1444         if ((ap = vp->sample) == NULL)
1445                         return;
1446         if (ap->index == 0) {
1447                 DEBUG(3,printk("AWE32: set sample (%d)\n", ap->sample));
1448                 if (awe_set_sample((awe_voice_list*)ap) == 0)
1449                         return;
1450         }
1451
1452         /* calculate offset */
1453         if (ap->fixkey >= 0) {
1454                 DEBUG(3,printk("AWE32: p-> fixkey(%d) tune(%d)\n", ap->fixkey, ap->tune));
1455                 offset = (ap->fixkey - ap->root) * 4096 / 12;
1456         } else {
1457                 DEBUG(3,printk("AWE32: p(%d)-> root(%d) tune(%d)\n", vp->note, ap->root, ap->tune));
1458                 offset = (vp->note - ap->root) * 4096 / 12;
1459                 DEBUG(4,printk("AWE32: p-> ofs=%d\n", offset));
1460         }
1461         offset = (offset * ap->scaleTuning) / 100;
1462         DEBUG(4,printk("AWE32: p-> scale* ofs=%d\n", offset));
1463         offset += ap->tune * 4096 / 1200;
1464         DEBUG(4,printk("AWE32: p-> tune+ ofs=%d\n", offset));
1465         if (cp->bender != 0) {
1466                 DEBUG(3,printk("AWE32: p-> bend(%d) %d\n", voice, cp->bender));
1467                 /* (819200: 1 semitone) ==> (4096: 12 semitones) */
1468                 offset += cp->bender * cp->bender_range / 2400;
1469         }
1470
1471         /* add initial pitch correction */
1472         if (FX_ON(&cp->fx_layer[vp->layer], AWE_FX_INIT_PITCH))
1473                 offset += cp->fx_layer[vp->layer].val[AWE_FX_INIT_PITCH];
1474         else if (FX_ON(&cp->fx, AWE_FX_INIT_PITCH))
1475                 offset += cp->fx.val[AWE_FX_INIT_PITCH];
1476
1477         /* 0xe000: root pitch */
1478         vp->apitch = 0xe000 + ap->rate_offset + offset;
1479         DEBUG(4,printk("AWE32: p-> sum aofs=%x, rate_ofs=%d\n", vp->apitch, ap->rate_offset));
1480         if (vp->apitch > 0xffff)
1481                 vp->apitch = 0xffff;
1482         if (vp->apitch < 0)
1483                 vp->apitch = 0;
1484 }
1485
1486
1487 #ifdef AWE_HAS_GUS_COMPATIBILITY
1488 /* calculate MIDI key and semitone from the specified frequency */
1489 static void
1490 awe_calc_pitch_from_freq(int voice, int freq)
1491 {
1492         voice_info *vp = &voices[voice];
1493         awe_voice_info *ap;
1494         FX_Rec *fx = &voices[voice].cinfo->fx;
1495         FX_Rec *fx_lay = NULL;
1496         int offset;
1497         int note;
1498
1499         if (voices[voice].layer < MAX_LAYERS)
1500                 fx_lay = &voices[voice].cinfo->fx_layer[voices[voice].layer];
1501
1502         /* search voice information */
1503         if ((ap = vp->sample) == NULL)
1504                 return;
1505         if (ap->index == 0) {
1506                 DEBUG(3,printk("AWE32: set sample (%d)\n", ap->sample));
1507                 if (awe_set_sample((awe_voice_list*)ap) == 0)
1508                         return;
1509         }
1510         note = freq_to_note(freq);
1511         offset = (note - ap->root * 100 + ap->tune) * 4096 / 1200;
1512         offset = (offset * ap->scaleTuning) / 100;
1513         if (fx_lay && FX_ON(fx_lay, AWE_FX_INIT_PITCH))
1514                 offset += fx_lay->val[AWE_FX_INIT_PITCH];
1515         else if (FX_ON(fx, AWE_FX_INIT_PITCH))
1516                 offset += fx->val[AWE_FX_INIT_PITCH];
1517         vp->apitch = 0xe000 + ap->rate_offset + offset;
1518         if (vp->apitch > 0xffff)
1519                 vp->apitch = 0xffff;
1520         if (vp->apitch < 0)
1521                 vp->apitch = 0;
1522 }
1523 #endif /* AWE_HAS_GUS_COMPATIBILITY */
1524
1525
1526 /*
1527  * calculate volume attenuation
1528  *
1529  * Voice volume is controlled by volume attenuation parameter.
1530  * So volume becomes maximum when avol is 0 (no attenuation), and
1531  * minimum when 255 (-96dB or silence).
1532  */
1533
1534 static int vol_table[128] = {
1535         255,111,95,86,79,74,70,66,63,61,58,56,54,52,50,49,
1536         47,46,45,43,42,41,40,39,38,37,36,35,34,34,33,32,
1537         31,31,30,29,29,28,27,27,26,26,25,24,24,23,23,22,
1538         22,21,21,21,20,20,19,19,18,18,18,17,17,16,16,16,
1539         15,15,15,14,14,14,13,13,13,12,12,12,11,11,11,10,
1540         10,10,10,9,9,9,8,8,8,8,7,7,7,7,6,6,
1541         6,6,5,5,5,5,5,4,4,4,4,3,3,3,3,3,
1542         2,2,2,2,2,1,1,1,1,1,0,0,0,0,0,0,
1543 };
1544
1545 /* tables for volume->attenuation calculation */
1546 static unsigned char voltab1[128] = {
1547    0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
1548    0x63, 0x2b, 0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22,
1549    0x21, 0x20, 0x1f, 0x1e, 0x1e, 0x1d, 0x1c, 0x1b, 0x1b, 0x1a,
1550    0x19, 0x19, 0x18, 0x17, 0x17, 0x16, 0x16, 0x15, 0x15, 0x14,
1551    0x14, 0x13, 0x13, 0x13, 0x12, 0x12, 0x11, 0x11, 0x11, 0x10,
1552    0x10, 0x10, 0x0f, 0x0f, 0x0f, 0x0e, 0x0e, 0x0e, 0x0e, 0x0d,
1553    0x0d, 0x0d, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0b, 0x0b, 0x0b,
1554    0x0b, 0x0a, 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x09, 0x09, 0x09,
1555    0x08, 0x08, 0x08, 0x08, 0x08, 0x07, 0x07, 0x07, 0x07, 0x06,
1556    0x06, 0x06, 0x06, 0x06, 0x05, 0x05, 0x05, 0x05, 0x05, 0x04,
1557    0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x03, 0x03, 0x02,
1558    0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01,
1559    0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
1560 };
1561
1562 static unsigned char voltab2[128] = {
1563    0x32, 0x31, 0x30, 0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x2a,
1564    0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x24, 0x23, 0x22, 0x21,
1565    0x21, 0x20, 0x1f, 0x1e, 0x1e, 0x1d, 0x1c, 0x1c, 0x1b, 0x1a,
1566    0x1a, 0x19, 0x19, 0x18, 0x18, 0x17, 0x16, 0x16, 0x15, 0x15,
1567    0x14, 0x14, 0x13, 0x13, 0x13, 0x12, 0x12, 0x11, 0x11, 0x10,
1568    0x10, 0x10, 0x0f, 0x0f, 0x0f, 0x0e, 0x0e, 0x0e, 0x0d, 0x0d,
1569    0x0d, 0x0c, 0x0c, 0x0c, 0x0b, 0x0b, 0x0b, 0x0b, 0x0a, 0x0a,
1570    0x0a, 0x0a, 0x09, 0x09, 0x09, 0x09, 0x09, 0x08, 0x08, 0x08,
1571    0x08, 0x08, 0x07, 0x07, 0x07, 0x07, 0x07, 0x06, 0x06, 0x06,
1572    0x06, 0x06, 0x06, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
1573    0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x03,
1574    0x03, 0x03, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01,
1575    0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00
1576 };
1577
1578 static unsigned char expressiontab[128] = {
1579    0x7f, 0x6c, 0x62, 0x5a, 0x54, 0x50, 0x4b, 0x48, 0x45, 0x42,
1580    0x40, 0x3d, 0x3b, 0x39, 0x38, 0x36, 0x34, 0x33, 0x31, 0x30,
1581    0x2f, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x27, 0x26, 0x25,
1582    0x24, 0x24, 0x23, 0x22, 0x21, 0x21, 0x20, 0x1f, 0x1e, 0x1e,
1583    0x1d, 0x1d, 0x1c, 0x1b, 0x1b, 0x1a, 0x1a, 0x19, 0x18, 0x18,
1584    0x17, 0x17, 0x16, 0x16, 0x15, 0x15, 0x15, 0x14, 0x14, 0x13,
1585    0x13, 0x12, 0x12, 0x11, 0x11, 0x11, 0x10, 0x10, 0x0f, 0x0f,
1586    0x0f, 0x0e, 0x0e, 0x0e, 0x0d, 0x0d, 0x0d, 0x0c, 0x0c, 0x0c,
1587    0x0b, 0x0b, 0x0b, 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x09, 0x09,
1588    0x08, 0x08, 0x08, 0x07, 0x07, 0x07, 0x07, 0x06, 0x06, 0x06,
1589    0x06, 0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03,
1590    0x03, 0x03, 0x03, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01,
1591    0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
1592 };
1593
1594 static void
1595 awe_calc_volume(int voice)
1596 {
1597         voice_info *vp = &voices[voice];
1598         awe_voice_info *ap;
1599         awe_chan_info *cp = voices[voice].cinfo;
1600         int vol;
1601
1602         /* search voice information */
1603         if ((ap = vp->sample) == NULL)
1604                 return;
1605
1606         ap = vp->sample;
1607         if (ap->index == 0) {
1608                 DEBUG(3,printk("AWE32: set sample (%d)\n", ap->sample));
1609                 if (awe_set_sample((awe_voice_list*)ap) == 0)
1610                         return;
1611         }
1612
1613         if (ctrls[AWE_MD_NEW_VOLUME_CALC]) {
1614                 int main_vol = cp->main_vol * ap->amplitude / 127;
1615                 limitvalue(vp->velocity, 0, 127);
1616                 limitvalue(main_vol, 0, 127);
1617                 limitvalue(cp->expression_vol, 0, 127);
1618
1619                 vol = voltab1[main_vol] + voltab2[vp->velocity];
1620                 vol = (vol * 8) / 3;
1621                 vol += ap->attenuation;
1622                 if (cp->expression_vol < 127)
1623                         vol += ((0x100 - vol) * expressiontab[cp->expression_vol])/128;
1624                 vol += atten_offset;
1625                 if (atten_relative)
1626                         vol += ctrls[AWE_MD_ZERO_ATTEN];
1627                 limitvalue(vol, 0, 255);
1628                 vp->avol = vol;
1629
1630         } else {
1631                 /* 0 - 127 */
1632                 vol = (vp->velocity * cp->main_vol * cp->expression_vol) / (127*127);
1633                 vol = vol * ap->amplitude / 127;
1634
1635                 if (vol < 0) vol = 0;
1636                 if (vol > 127) vol = 127;
1637
1638                 /* calc to attenuation */
1639                 vol = vol_table[vol];
1640                 vol += (int)ap->attenuation;
1641                 vol += atten_offset;
1642                 if (atten_relative)
1643                         vol += ctrls[AWE_MD_ZERO_ATTEN];
1644                 if (vol > 255) vol = 255;
1645
1646                 vp->avol = vol;
1647         }
1648         if (cp->bank !=  AWE_DRUM_BANK && ((awe_voice_parm_block*)(&ap->parm))->volatk < 0x7d) {
1649                 int atten;
1650                 if (vp->velocity < 70) atten = 70;
1651                 else atten = vp->velocity;
1652                 vp->acutoff = (atten * ap->parm.cutoff + 0xa0) >> 7;
1653         } else {
1654                 vp->acutoff = ap->parm.cutoff;
1655         }
1656         DEBUG(3,printk("AWE32: [-- voice(%d) vol=%x]\n", voice, vol));
1657 }
1658
1659 /* change master volume */
1660 static void
1661 awe_change_master_volume(short val)
1662 {
1663         limitvalue(val, 0, 127);
1664         atten_offset = vol_table[val];
1665         atten_relative = TRUE;
1666         awe_update_volume();
1667 }
1668
1669 /* update volumes of all available channels */
1670 static void awe_update_volume(void)
1671 {
1672         int i;
1673         for (i = 0; i < awe_max_voices; i++)
1674                 awe_set_voice_vol(i, TRUE);
1675 }
1676
1677 /* set sostenuto on */
1678 static void awe_sostenuto_on(int voice, int forced)
1679 {
1680         if (IS_NO_EFFECT(voice) && !forced) return;
1681         voices[voice].sostenuto = 127;
1682 }
1683
1684
1685 /* drop sustain */
1686 static void awe_sustain_off(int voice, int forced)
1687 {
1688         if (voices[voice].state == AWE_ST_SUSTAINED) {
1689                 awe_note_off(voice);
1690                 awe_fx_init(voices[voice].ch);
1691                 awe_voice_init(voice, FALSE);
1692         }
1693 }
1694
1695
1696 /* terminate and initialize voice */
1697 static void awe_terminate_and_init(int voice, int forced)
1698 {
1699         awe_terminate(voice);
1700         awe_fx_init(voices[voice].ch);
1701         awe_voice_init(voice, TRUE);
1702 }
1703
1704
1705 /*
1706  * synth operation routines
1707  */
1708
1709 #define AWE_VOICE_KEY(v)        (0x8000 | (v))
1710 #define AWE_CHAN_KEY(c,n)       (((c) << 8) | ((n) + 1))
1711 #define KEY_CHAN_MATCH(key,c)   (((key) >> 8) == (c))
1712
1713 /* initialize the voice */
1714 static void
1715 awe_voice_init(int voice, int init_all)
1716 {
1717         voice_info *vp = &voices[voice];
1718
1719         /* reset voice search key */
1720         if (playing_mode == AWE_PLAY_DIRECT)
1721                 vp->key = AWE_VOICE_KEY(voice);
1722         else
1723                 vp->key = 0;
1724
1725         /* clear voice mapping */
1726         voice_alloc->map[voice] = 0;
1727
1728         /* touch the timing flag */
1729         vp->time = current_alloc_time;
1730
1731         /* initialize other parameters if necessary */
1732         if (init_all) {
1733                 vp->note = -1;
1734                 vp->velocity = 0;
1735                 vp->sostenuto = 0;
1736
1737                 vp->sample = NULL;
1738                 vp->cinfo = &channels[voice];
1739                 vp->ch = voice;
1740                 vp->state = AWE_ST_OFF;
1741
1742                 /* emu8000 parameters */
1743                 vp->apitch = 0;
1744                 vp->avol = 255;
1745                 vp->apan = -1;
1746         }
1747 }
1748
1749 /* clear effects */
1750 static void awe_fx_init(int ch)
1751 {
1752         if (SINGLE_LAYER_MODE() && !ctrls[AWE_MD_KEEP_EFFECT]) {
1753                 memset(&channels[ch].fx, 0, sizeof(channels[ch].fx));
1754                 memset(&channels[ch].fx_layer, 0, sizeof(&channels[ch].fx_layer));
1755         }
1756 }
1757
1758 /* initialize channel info */
1759 static void awe_channel_init(int ch, int init_all)
1760 {
1761         awe_chan_info *cp = &channels[ch];
1762         cp->channel = ch;
1763         if (init_all) {
1764                 cp->panning = 0; /* zero center */
1765                 cp->bender_range = 200; /* sense * 100 */
1766                 cp->main_vol = 127;
1767                 if (MULTI_LAYER_MODE() && IS_DRUM_CHANNEL(ch)) {
1768                         cp->instr = ctrls[AWE_MD_DEF_DRUM];
1769                         cp->bank = AWE_DRUM_BANK;
1770                 } else {
1771                         cp->instr = ctrls[AWE_MD_DEF_PRESET];
1772                         cp->bank = ctrls[AWE_MD_DEF_BANK];
1773                 }
1774         }
1775
1776         cp->bender = 0; /* zero tune skew */
1777         cp->expression_vol = 127;
1778         cp->chan_press = 0;
1779         cp->sustained = 0;
1780
1781         if (! ctrls[AWE_MD_KEEP_EFFECT]) {
1782                 memset(&cp->fx, 0, sizeof(cp->fx));
1783                 memset(&cp->fx_layer, 0, sizeof(cp->fx_layer));
1784         }
1785 }
1786
1787
1788 /* change the voice parameters; voice = channel */
1789 static void awe_voice_change(int voice, fx_affect_func func)
1790 {
1791         int i;
1792         switch (playing_mode) {
1793         case AWE_PLAY_DIRECT:
1794                 func(voice, FALSE);
1795                 break;
1796         case AWE_PLAY_INDIRECT:
1797                 for (i = 0; i < awe_max_voices; i++)
1798                         if (voices[i].key == AWE_VOICE_KEY(voice))
1799                                 func(i, FALSE);
1800                 break;
1801         default:
1802                 for (i = 0; i < awe_max_voices; i++)
1803                         if (KEY_CHAN_MATCH(voices[i].key, voice))
1804                                 func(i, FALSE);
1805                 break;
1806         }
1807 }
1808
1809
1810 /*
1811  * device open / close
1812  */
1813
1814 /* open device:
1815  *   reset status of all voices, and clear sample position flag
1816  */
1817 static int
1818 awe_open(int dev, int mode)
1819 {
1820         if (awe_busy)
1821                 return -EBUSY;
1822
1823         awe_busy = TRUE;
1824
1825         /* set default mode */
1826         awe_init_ctrl_parms(FALSE);
1827         atten_relative = TRUE;
1828         atten_offset = 0;
1829         drum_flags = DEFAULT_DRUM_FLAGS;
1830         playing_mode = AWE_PLAY_INDIRECT;
1831
1832         /* reset voices & channels */
1833         awe_reset(dev);
1834
1835         patch_opened = 0;
1836
1837         return 0;
1838 }
1839
1840
1841 /* close device:
1842  *   reset all voices again (terminate sounds)
1843  */
1844 static void
1845 awe_close(int dev)
1846 {
1847         awe_reset(dev);
1848         awe_busy = FALSE;
1849 }
1850
1851
1852 /* set miscellaneous mode parameters
1853  */
1854 static void
1855 awe_init_ctrl_parms(int init_all)
1856 {
1857         int i;
1858         for (i = 0; i < AWE_MD_END; i++) {
1859                 if (init_all || ctrl_parms[i].init_each_time)
1860                         ctrls[i] = ctrl_parms[i].value;
1861         }
1862 }
1863
1864
1865 /* sequencer I/O control:
1866  */
1867 static int
1868 awe_ioctl(int dev, unsigned int cmd, void __user *arg)
1869 {
1870         switch (cmd) {
1871         case SNDCTL_SYNTH_INFO:
1872                 if (playing_mode == AWE_PLAY_DIRECT)
1873                         awe_info.nr_voices = awe_max_voices;
1874                 else
1875                         awe_info.nr_voices = AWE_MAX_CHANNELS;
1876                 if (copy_to_user(arg, &awe_info, sizeof(awe_info)))
1877                         return -EFAULT;
1878                 return 0;
1879                 break;
1880
1881         case SNDCTL_SEQ_RESETSAMPLES:
1882                 awe_reset(dev);
1883                 awe_reset_samples();
1884                 return 0;
1885                 break;
1886
1887         case SNDCTL_SEQ_PERCMODE:
1888                 /* what's this? */
1889                 return 0;
1890                 break;
1891
1892         case SNDCTL_SYNTH_MEMAVL:
1893                 return memsize - awe_free_mem_ptr() * 2;
1894                 break;
1895
1896         default:
1897                 printk(KERN_WARNING "AWE32: unsupported ioctl %d\n", cmd);
1898                 return -EINVAL;
1899                 break;
1900         }
1901 }
1902
1903
1904 static int voice_in_range(int voice)
1905 {
1906         if (playing_mode == AWE_PLAY_DIRECT) {
1907                 if (voice < 0 || voice >= awe_max_voices)
1908                         return FALSE;
1909         } else {
1910                 if (voice < 0 || voice >= AWE_MAX_CHANNELS)
1911                         return FALSE;
1912         }
1913         return TRUE;
1914 }
1915
1916 static void release_voice(int voice, int do_sustain)
1917 {
1918         if (IS_NO_SOUND(voice))
1919                 return;
1920         if (do_sustain && (voices[voice].cinfo->sustained == 127 ||
1921                             voices[voice].sostenuto == 127))
1922                 voices[voice].state = AWE_ST_SUSTAINED;
1923         else {
1924                 awe_note_off(voice);
1925                 awe_fx_init(voices[voice].ch);
1926                 awe_voice_init(voice, FALSE);
1927         }
1928 }
1929
1930 /* release all notes */
1931 static void awe_note_off_all(int do_sustain)
1932 {
1933         int i;
1934         for (i = 0; i < awe_max_voices; i++)
1935                 release_voice(i, do_sustain);
1936 }
1937
1938 /* kill a voice:
1939  *   not terminate, just release the voice.
1940  */
1941 static int
1942 awe_kill_note(int dev, int voice, int note, int velocity)
1943 {
1944         int i, v2, key;
1945
1946         DEBUG(2,printk("AWE32: [off(%d) nt=%d vl=%d]\n", voice, note, velocity));
1947         if (! voice_in_range(voice))
1948                 return -EINVAL;
1949
1950         switch (playing_mode) {
1951         case AWE_PLAY_DIRECT:
1952         case AWE_PLAY_INDIRECT:
1953                 key = AWE_VOICE_KEY(voice);
1954                 break;
1955
1956         case AWE_PLAY_MULTI2:
1957                 v2 = voice_alloc->map[voice] >> 8;
1958                 voice_alloc->map[voice] = 0;
1959                 voice = v2;
1960                 if (voice < 0 || voice >= AWE_MAX_CHANNELS)
1961                         return -EINVAL;
1962                 /* continue to below */
1963         default:
1964                 key = AWE_CHAN_KEY(voice, note);
1965                 break;
1966         }
1967
1968         for (i = 0; i < awe_max_voices; i++) {
1969                 if (voices[i].key == key)
1970                         release_voice(i, TRUE);
1971         }
1972         return 0;
1973 }
1974
1975
1976 static void start_or_volume_change(int voice, int velocity)
1977 {
1978         voices[voice].velocity = velocity;
1979         awe_calc_volume(voice);
1980         if (voices[voice].state == AWE_ST_STANDBY)
1981                 awe_note_on(voice);
1982         else if (voices[voice].state == AWE_ST_ON)
1983                 awe_set_volume(voice, FALSE);
1984 }
1985
1986 static void set_and_start_voice(int voice, int state)
1987 {
1988         /* calculate pitch & volume parameters */
1989         voices[voice].state = state;
1990         awe_calc_pitch(voice);
1991         awe_calc_volume(voice);
1992         if (state == AWE_ST_ON)
1993                 awe_note_on(voice);
1994 }
1995
1996 /* start a voice:
1997  *   if note is 255, identical with aftertouch function.
1998  *   Otherwise, start a voice with specified not and volume.
1999  */
2000 static int
2001 awe_start_note(int dev, int voice, int note, int velocity)
2002 {
2003         int i, key, state, volonly;
2004
2005         DEBUG(2,printk("AWE32: [on(%d) nt=%d vl=%d]\n", voice, note, velocity));
2006         if (! voice_in_range(voice))
2007                 return -EINVAL;
2008
2009         if (velocity == 0)
2010                 state = AWE_ST_STANDBY; /* stand by for playing */
2011         else
2012                 state = AWE_ST_ON;      /* really play */
2013         volonly = FALSE;
2014
2015         switch (playing_mode) {
2016         case AWE_PLAY_DIRECT:
2017         case AWE_PLAY_INDIRECT:
2018                 key = AWE_VOICE_KEY(voice);
2019                 if (note == 255)
2020                         volonly = TRUE;
2021                 break;
2022
2023         case AWE_PLAY_MULTI2:
2024                 voice = voice_alloc->map[voice] >> 8;
2025                 if (voice < 0 || voice >= AWE_MAX_CHANNELS)
2026                         return -EINVAL;
2027                 /* continue to below */
2028         default:
2029                 if (note >= 128) { /* key volume mode */
2030                         note -= 128;
2031                         volonly = TRUE;
2032                 }
2033                 key = AWE_CHAN_KEY(voice, note);
2034                 break;
2035         }
2036
2037         /* dynamic volume change */
2038         if (volonly) {
2039                 for (i = 0; i < awe_max_voices; i++) {
2040                         if (voices[i].key == key)
2041                                 start_or_volume_change(i, velocity);
2042                 }
2043                 return 0;
2044         }
2045
2046         /* if the same note still playing, stop it */
2047         if (playing_mode != AWE_PLAY_DIRECT || ctrls[AWE_MD_EXCLUSIVE_SOUND]) {
2048                 for (i = 0; i < awe_max_voices; i++)
2049                         if (voices[i].key == key) {
2050                                 if (voices[i].state == AWE_ST_ON) {
2051                                         awe_note_off(i);
2052                                         awe_voice_init(i, FALSE);
2053                                 } else if (voices[i].state == AWE_ST_STANDBY)
2054                                         awe_voice_init(i, TRUE);
2055                         }
2056         }
2057
2058         /* allocate voices */
2059         if (playing_mode == AWE_PLAY_DIRECT)
2060                 awe_alloc_one_voice(voice, note, velocity);
2061         else
2062                 awe_alloc_multi_voices(voice, note, velocity, key);
2063
2064         /* turn off other voices exlusively (for drums) */
2065         for (i = 0; i < awe_max_voices; i++)
2066                 if (voices[i].key == key)
2067                         awe_exclusive_off(i);
2068
2069         /* set up pitch and volume parameters */
2070         for (i = 0; i < awe_max_voices; i++) {
2071                 if (voices[i].key == key && voices[i].state == AWE_ST_OFF)
2072                         set_and_start_voice(i, state);
2073         }
2074
2075         return 0;
2076 }
2077
2078
2079 /* calculate hash key */
2080 static int
2081 awe_search_key(int bank, int preset, int note)
2082 {
2083         unsigned int key;
2084
2085 #if 1 /* new hash table */
2086         if (bank == AWE_DRUM_BANK)
2087                 key = preset + note + 128;
2088         else
2089                 key = bank + preset;
2090 #else
2091         key = preset;
2092 #endif
2093         key %= AWE_MAX_PRESETS;
2094
2095         return (int)key;
2096 }
2097
2098
2099 /* search instrument from hash table */
2100 static awe_voice_list *
2101 awe_search_instr(int bank, int preset, int note)
2102 {
2103         awe_voice_list *p;
2104         int key, key2;
2105
2106         key = awe_search_key(bank, preset, note);
2107         for (p = preset_table[key]; p; p = p->next_bank) {
2108                 if (p->instr == preset && p->bank == bank)
2109                         return p;
2110         }
2111         key2 = awe_search_key(bank, preset, 0); /* search default */
2112         if (key == key2)
2113                 return NULL;
2114         for (p = preset_table[key2]; p; p = p->next_bank) {
2115                 if (p->instr == preset && p->bank == bank)
2116                         return p;
2117         }
2118         return NULL;
2119 }
2120
2121
2122 /* assign the instrument to a voice */
2123 static int
2124 awe_set_instr_2(int dev, int voice, int instr_no)
2125 {
2126         if (playing_mode == AWE_PLAY_MULTI2) {
2127                 voice = voice_alloc->map[voice] >> 8;
2128                 if (voice < 0 || voice >= AWE_MAX_CHANNELS)
2129                         return -EINVAL;
2130         }
2131         return awe_set_instr(dev, voice, instr_no);
2132 }
2133
2134 /* assign the instrument to a channel; voice is the channel number */
2135 static int
2136 awe_set_instr(int dev, int voice, int instr_no)
2137 {
2138         awe_chan_info *cinfo;
2139
2140         if (! voice_in_range(voice))
2141                 return -EINVAL;
2142
2143         if (instr_no < 0 || instr_no >= AWE_MAX_PRESETS)
2144                 return -EINVAL;
2145
2146         cinfo = &channels[voice];
2147         cinfo->instr = instr_no;
2148         DEBUG(2,printk("AWE32: [program(%d) %d]\n", voice, instr_no));
2149
2150         return 0;
2151 }
2152
2153
2154 /* reset all voices; terminate sounds and initialize parameters */
2155 static void
2156 awe_reset(int dev)
2157 {
2158         int i;
2159         current_alloc_time = 0;
2160         /* don't turn off voice 31 and 32.  they are used also for FM voices */
2161         for (i = 0; i < awe_max_voices; i++) {
2162                 awe_terminate(i);
2163                 awe_voice_init(i, TRUE);
2164         }
2165         for (i = 0; i < AWE_MAX_CHANNELS; i++)
2166                 awe_channel_init(i, TRUE);
2167         for (i = 0; i < 16; i++) {
2168                 awe_operations.chn_info[i].controllers[CTL_MAIN_VOLUME] = 127;
2169                 awe_operations.chn_info[i].controllers[CTL_EXPRESSION] = 127;
2170         }
2171         awe_init_fm();
2172         awe_tweak();
2173 }
2174
2175
2176 /* hardware specific control:
2177  *   GUS specific and AWE32 specific controls are available.
2178  */
2179 static void
2180 awe_hw_control(int dev, unsigned char *event)
2181 {
2182         int cmd = event[2];
2183         if (cmd & _AWE_MODE_FLAG)
2184                 awe_hw_awe_control(dev, cmd & _AWE_MODE_VALUE_MASK, event);
2185 #ifdef AWE_HAS_GUS_COMPATIBILITY
2186         else
2187                 awe_hw_gus_control(dev, cmd & _AWE_MODE_VALUE_MASK, event);
2188 #endif
2189 }
2190
2191
2192 #ifdef AWE_HAS_GUS_COMPATIBILITY
2193
2194 /* GUS compatible controls */
2195 static void
2196 awe_hw_gus_control(int dev, int cmd, unsigned char *event)
2197 {
2198         int voice, i, key;
2199         unsigned short p1;
2200         short p2;
2201         int plong;
2202
2203         if (MULTI_LAYER_MODE())
2204                 return;
2205         if (cmd == _GUS_NUMVOICES)
2206                 return;
2207
2208         voice = event[3];
2209         if (! voice_in_range(voice))
2210                 return;
2211
2212         p1 = *(unsigned short *) &event[4];
2213         p2 = *(short *) &event[6];
2214         plong = *(int*) &event[4];
2215
2216         switch (cmd) {
2217         case _GUS_VOICESAMPLE:
2218                 awe_set_instr(dev, voice, p1);
2219                 return;
2220
2221         case _GUS_VOICEBALA:
2222                 /* 0 to 15 --> -128 to 127 */
2223                 awe_panning(dev, voice, ((int)p1 << 4) - 128);
2224                 return;
2225
2226         case _GUS_VOICEVOL:
2227         case _GUS_VOICEVOL2:
2228                 /* not supported yet */
2229                 return;
2230
2231         case _GUS_RAMPRANGE:
2232         case _GUS_RAMPRATE:
2233         case _GUS_RAMPMODE:
2234         case _GUS_RAMPON:
2235         case _GUS_RAMPOFF:
2236                 /* volume ramping not supported */
2237                 return;
2238
2239         case _GUS_VOLUME_SCALE:
2240                 return;
2241
2242         case _GUS_VOICE_POS:
2243                 FX_SET(&channels[voice].fx, AWE_FX_SAMPLE_START,
2244                        (short)(plong & 0x7fff));
2245                 FX_SET(&channels[voice].fx, AWE_FX_COARSE_SAMPLE_START,
2246                        (plong >> 15) & 0xffff);
2247                 return;
2248         }
2249
2250         key = AWE_VOICE_KEY(voice);
2251         for (i = 0; i < awe_max_voices; i++) {
2252                 if (voices[i].key == key) {
2253                         switch (cmd) {
2254                         case _GUS_VOICEON:
2255                                 awe_note_on(i);
2256                                 break;
2257
2258                         case _GUS_VOICEOFF:
2259                                 awe_terminate(i);
2260                                 awe_fx_init(voices[i].ch);
2261                                 awe_voice_init(i, TRUE);
2262                                 break;
2263
2264                         case _GUS_VOICEFADE:
2265                                 awe_note_off(i);
2266                                 awe_fx_init(voices[i].ch);
2267                                 awe_voice_init(i, FALSE);
2268                                 break;
2269
2270                         case _GUS_VOICEFREQ:
2271                                 awe_calc_pitch_from_freq(i, plong);
2272                                 break;
2273                         }
2274                 }
2275         }
2276 }
2277
2278 #endif /* gus_compat */
2279
2280
2281 /* AWE32 specific controls */
2282 static void
2283 awe_hw_awe_control(int dev, int cmd, unsigned char *event)
2284 {
2285         int voice;
2286         unsigned short p1;
2287         short p2;
2288         int i;
2289
2290         voice = event[3];
2291         if (! voice_in_range(voice))
2292                 return;
2293
2294         if (playing_mode == AWE_PLAY_MULTI2) {
2295                 voice = voice_alloc->map[voice] >> 8;
2296                 if (voice < 0 || voice >= AWE_MAX_CHANNELS)
2297                         return;
2298         }
2299
2300         p1 = *(unsigned short *) &event[4];
2301         p2 = *(short *) &event[6];
2302
2303         switch (cmd) {
2304         case _AWE_DEBUG_MODE:
2305                 ctrls[AWE_MD_DEBUG_MODE] = p1;
2306                 printk(KERN_DEBUG "AWE32: debug mode = %d\n", ctrls[AWE_MD_DEBUG_MODE]);
2307                 break;
2308         case _AWE_REVERB_MODE:
2309                 ctrls[AWE_MD_REVERB_MODE] = p1;
2310                 awe_update_reverb_mode();
2311                 break;
2312
2313         case _AWE_CHORUS_MODE:
2314                 ctrls[AWE_MD_CHORUS_MODE] = p1;
2315                 awe_update_chorus_mode();
2316                 break;
2317
2318         case _AWE_REMOVE_LAST_SAMPLES:
2319                 DEBUG(0,printk("AWE32: remove last samples\n"));
2320                 awe_reset(0);
2321                 if (locked_sf_id > 0)
2322                         awe_remove_samples(locked_sf_id);
2323                 break;
2324
2325         case _AWE_INITIALIZE_CHIP:
2326                 awe_initialize();
2327                 break;
2328
2329         case _AWE_SEND_EFFECT:
2330                 i = -1;
2331                 if (p1 >= 0x100) {
2332                         i = (p1 >> 8);
2333                         if (i < 0 || i >= MAX_LAYERS)
2334                                 break;
2335                 }
2336                 awe_send_effect(voice, i, p1, p2);
2337                 break;
2338
2339         case _AWE_RESET_CHANNEL:
2340                 awe_channel_init(voice, !p1);
2341                 break;
2342
2343         case _AWE_TERMINATE_ALL:
2344                 awe_reset(0);
2345                 break;
2346
2347         case _AWE_TERMINATE_CHANNEL:
2348                 awe_voice_change(voice, awe_terminate_and_init);
2349                 break;
2350
2351         case _AWE_RELEASE_ALL:
2352                 awe_note_off_all(FALSE);
2353                 break;
2354         case _AWE_NOTEOFF_ALL:
2355                 awe_note_off_all(TRUE);
2356                 break;
2357
2358         case _AWE_INITIAL_VOLUME:
2359                 DEBUG(0,printk("AWE32: init attenuation %d\n", p1));
2360                 atten_relative = (char)p2;
2361                 atten_offset = (short)p1;
2362                 awe_update_volume();
2363                 break;
2364
2365         case _AWE_CHN_PRESSURE:
2366                 channels[voice].chan_press = p1;
2367                 awe_modwheel_change(voice, p1);
2368                 break;
2369
2370         case _AWE_CHANNEL_MODE:
2371                 DEBUG(0,printk("AWE32: channel mode = %d\n", p1));
2372                 playing_mode = p1;
2373                 awe_reset(0);
2374                 break;
2375
2376         case _AWE_DRUM_CHANNELS:
2377                 DEBUG(0,printk("AWE32: drum flags = %x\n", p1));
2378                 drum_flags = *(unsigned int*)&event[4];
2379                 break;
2380
2381         case _AWE_MISC_MODE:
2382                 DEBUG(0,printk("AWE32: ctrl parms = %d %d\n", p1, p2));
2383                 if (p1 > AWE_MD_VERSION && p1 < AWE_MD_END) {
2384                         ctrls[p1] = p2;
2385                         if (ctrl_parms[p1].update)
2386                                 ctrl_parms[p1].update();
2387                 }
2388                 break;
2389
2390         case _AWE_EQUALIZER:
2391                 ctrls[AWE_MD_BASS_LEVEL] = p1;
2392                 ctrls[AWE_MD_TREBLE_LEVEL] = p2;
2393                 awe_update_equalizer();
2394                 break;
2395
2396         default:
2397                 DEBUG(0,printk("AWE32: hw control cmd=%d voice=%d\n", cmd, voice));
2398                 break;
2399         }
2400 }
2401
2402
2403 /* change effects */
2404 static void
2405 awe_send_effect(int voice, int layer, int type, int val)
2406 {
2407         awe_chan_info *cinfo;
2408         FX_Rec *fx;
2409         int mode;
2410
2411         cinfo = &channels[voice];
2412         if (layer >= 0 && layer < MAX_LAYERS)
2413                 fx = &cinfo->fx_layer[layer];
2414         else
2415                 fx = &cinfo->fx;
2416
2417         if (type & 0x40)
2418                 mode = FX_FLAG_OFF;
2419         else if (type & 0x80)
2420                 mode = FX_FLAG_ADD;
2421         else
2422                 mode = FX_FLAG_SET;
2423         type &= 0x3f;
2424
2425         if (type >= 0 && type < AWE_FX_END) {
2426                 DEBUG(2,printk("AWE32: effects (%d) %d %d\n", voice, type, val));
2427                 if (mode == FX_FLAG_SET)
2428                         FX_SET(fx, type, val);
2429                 else if (mode == FX_FLAG_ADD)
2430                         FX_ADD(fx, type, val);
2431                 else
2432                         FX_UNSET(fx, type);
2433                 if (mode != FX_FLAG_OFF && parm_defs[type].realtime) {
2434                         DEBUG(2,printk("AWE32: fx_realtime (%d)\n", voice));
2435                         awe_voice_change(voice, parm_defs[type].realtime);
2436                 }
2437         }
2438 }
2439
2440
2441 /* change modulation wheel; voice is already mapped on multi2 mode */
2442 static void
2443 awe_modwheel_change(int voice, int value)
2444 {
2445         int i;
2446         awe_chan_info *cinfo;
2447
2448         cinfo = &channels[voice];
2449         i = value * ctrls[AWE_MD_MOD_SENSE] / 1200;
2450         FX_ADD(&cinfo->fx, AWE_FX_LFO1_PITCH, i);
2451         awe_voice_change(voice, awe_fx_fmmod);
2452         FX_ADD(&cinfo->fx, AWE_FX_LFO2_PITCH, i);
2453         awe_voice_change(voice, awe_fx_fm2frq2);
2454 }
2455
2456
2457 /* voice pressure change */
2458 static void
2459 awe_aftertouch(int dev, int voice, int pressure)
2460 {
2461         int note;
2462
2463         DEBUG(2,printk("AWE32: [after(%d) %d]\n", voice, pressure));
2464         if (! voice_in_range(voice))
2465                 return;
2466
2467         switch (playing_mode) {
2468         case AWE_PLAY_DIRECT:
2469         case AWE_PLAY_INDIRECT:
2470                 awe_start_note(dev, voice, 255, pressure);
2471                 break;
2472         case AWE_PLAY_MULTI2:
2473                 note = (voice_alloc->map[voice] & 0xff) - 1;
2474                 awe_key_pressure(dev, voice, note + 0x80, pressure);
2475                 break;
2476         }
2477 }
2478
2479
2480 /* voice control change */
2481 static void
2482 awe_controller(int dev, int voice, int ctrl_num, int value)
2483 {
2484         awe_chan_info *cinfo;
2485
2486         if (! voice_in_range(voice))
2487                 return;
2488
2489         if (playing_mode == AWE_PLAY_MULTI2) {
2490                 voice = voice_alloc->map[voice] >> 8;
2491                 if (voice < 0 || voice >= AWE_MAX_CHANNELS)
2492                         return;
2493         }
2494
2495         cinfo = &channels[voice];
2496
2497         switch (ctrl_num) {
2498         case CTL_BANK_SELECT: /* MIDI control #0 */
2499                 DEBUG(2,printk("AWE32: [bank(%d) %d]\n", voice, value));
2500                 if (MULTI_LAYER_MODE() && IS_DRUM_CHANNEL(voice) &&
2501                     !ctrls[AWE_MD_TOGGLE_DRUM_BANK])
2502                         break;
2503                 if (value < 0 || value > 255)
2504                         break;
2505                 cinfo->bank = value;
2506                 if (cinfo->bank == AWE_DRUM_BANK)
2507                         DRUM_CHANNEL_ON(cinfo->channel);
2508                 else
2509                         DRUM_CHANNEL_OFF(cinfo->channel);
2510                 awe_set_instr(dev, voice, cinfo->instr);
2511                 break;
2512
2513         case CTL_MODWHEEL: /* MIDI control #1 */
2514                 DEBUG(2,printk("AWE32: [modwheel(%d) %d]\n", voice, value));
2515                 awe_modwheel_change(voice, value);
2516                 break;
2517
2518         case CTRL_PITCH_BENDER: /* SEQ1 V2 contorl */
2519                 DEBUG(2,printk("AWE32: [bend(%d) %d]\n", voice, value));
2520                 /* zero centered */
2521                 cinfo->bender = value;
2522                 awe_voice_change(voice, awe_set_voice_pitch);
2523                 break;
2524
2525         case CTRL_PITCH_BENDER_RANGE: /* SEQ1 V2 control */
2526                 DEBUG(2,printk("AWE32: [range(%d) %d]\n", voice, value));
2527                 /* value = sense x 100 */
2528                 cinfo->bender_range = value;
2529                 /* no audible pitch change yet.. */
2530                 break;
2531
2532         case CTL_EXPRESSION: /* MIDI control #11 */
2533                 if (SINGLE_LAYER_MODE())
2534                         value /= 128;
2535         case CTRL_EXPRESSION: /* SEQ1 V2 control */
2536                 DEBUG(2,printk("AWE32: [expr(%d) %d]\n", voice, value));
2537                 /* 0 - 127 */
2538                 cinfo->expression_vol = value;
2539                 awe_voice_change(voice, awe_set_voice_vol);
2540                 break;
2541
2542         case CTL_PAN:   /* MIDI control #10 */
2543                 DEBUG(2,printk("AWE32: [pan(%d) %d]\n", voice, value));
2544                 /* (0-127) -> signed 8bit */
2545                 cinfo->panning = value * 2 - 128;
2546                 if (ctrls[AWE_MD_REALTIME_PAN])
2547                         awe_voice_change(voice, awe_set_pan);
2548                 break;
2549
2550         case CTL_MAIN_VOLUME:   /* MIDI control #7 */
2551                 if (SINGLE_LAYER_MODE())
2552                         value = (value * 100) / 16383;
2553         case CTRL_MAIN_VOLUME:  /* SEQ1 V2 control */
2554                 DEBUG(2,printk("AWE32: [mainvol(%d) %d]\n", voice, value));
2555                 /* 0 - 127 */
2556                 cinfo->main_vol = value;
2557                 awe_voice_change(voice, awe_set_voice_vol);
2558                 break;
2559
2560         case CTL_EXT_EFF_DEPTH: /* reverb effects: 0-127 */
2561                 DEBUG(2,printk("AWE32: [reverb(%d) %d]\n", voice, value));
2562                 FX_SET(&cinfo->fx, AWE_FX_REVERB, value * 2);
2563                 break;
2564
2565         case CTL_CHORUS_DEPTH: /* chorus effects: 0-127 */
2566                 DEBUG(2,printk("AWE32: [chorus(%d) %d]\n", voice, value));
2567                 FX_SET(&cinfo->fx, AWE_FX_CHORUS, value * 2);
2568                 break;
2569
2570         case 120:  /* all sounds off */
2571                 awe_note_off_all(FALSE);
2572                 break;
2573         case 123:  /* all notes off */
2574                 awe_note_off_all(TRUE);
2575                 break;
2576
2577         case CTL_SUSTAIN: /* MIDI control #64 */
2578                 cinfo->sustained = value;
2579                 if (value != 127)
2580                         awe_voice_change(voice, awe_sustain_off);
2581                 break;
2582
2583         case CTL_SOSTENUTO: /* MIDI control #66 */
2584                 if (value == 127)
2585                         awe_voice_change(voice, awe_sostenuto_on);
2586                 else
2587                         awe_voice_change(voice, awe_sustain_off);
2588                 break;
2589
2590         default:
2591                 DEBUG(0,printk("AWE32: [control(%d) ctrl=%d val=%d]\n",
2592                            voice, ctrl_num, value));
2593                 break;
2594         }
2595 }
2596
2597
2598 /* voice pan change (value = -128 - 127) */
2599 static void
2600 awe_panning(int dev, int voice, int value)
2601 {
2602         awe_chan_info *cinfo;
2603
2604         if (! voice_in_range(voice))
2605                 return;
2606
2607         if (playing_mode == AWE_PLAY_MULTI2) {
2608                 voice = voice_alloc->map[voice] >> 8;
2609                 if (voice < 0 || voice >= AWE_MAX_CHANNELS)
2610                         return;
2611         }
2612
2613         cinfo = &channels[voice];
2614         cinfo->panning = value;
2615         DEBUG(2,printk("AWE32: [pan(%d) %d]\n", voice, cinfo->panning));
2616         if (ctrls[AWE_MD_REALTIME_PAN])
2617                 awe_voice_change(voice, awe_set_pan);
2618 }
2619
2620
2621 /* volume mode change */
2622 static void
2623 awe_volume_method(int dev, int mode)
2624 {
2625         /* not impremented */
2626         DEBUG(0,printk("AWE32: [volmethod mode=%d]\n", mode));
2627 }
2628
2629
2630 /* pitch wheel change: 0-16384 */
2631 static void
2632 awe_bender(int dev, int voice, int value)
2633 {
2634         awe_chan_info *cinfo;
2635
2636         if (! voice_in_range(voice))
2637                 return;
2638
2639         if (playing_mode == AWE_PLAY_MULTI2) {
2640                 voice = voice_alloc->map[voice] >> 8;
2641                 if (voice < 0 || voice >= AWE_MAX_CHANNELS)
2642                         return;
2643         }
2644
2645         /* convert to zero centered value */
2646         cinfo = &channels[voice];
2647         cinfo->bender = value - 8192;
2648         DEBUG(2,printk("AWE32: [bend(%d) %d]\n", voice, cinfo->bender));
2649         awe_voice_change(voice, awe_set_voice_pitch);
2650 }
2651
2652
2653 /*
2654  * load a sound patch:
2655  *   three types of patches are accepted: AWE, GUS, and SYSEX.
2656  */
2657
2658 static int
2659 awe_load_patch(int dev, int format, const char __user *addr,
2660                int offs, int count, int pmgr_flag)
2661 {
2662         awe_patch_info patch;
2663         int rc = 0;
2664
2665 #ifdef AWE_HAS_GUS_COMPATIBILITY
2666         if (format == GUS_PATCH) {
2667                 return awe_load_guspatch(addr, offs, count, pmgr_flag);
2668         } else
2669 #endif
2670         if (format == SYSEX_PATCH) {
2671                 /* no system exclusive message supported yet */
2672                 return 0;
2673         } else if (format != AWE_PATCH) {
2674                 printk(KERN_WARNING "AWE32 Error: Invalid patch format (key) 0x%x\n", format);
2675                 return -EINVAL;
2676         }
2677
2678         if (count < AWE_PATCH_INFO_SIZE) {
2679                 printk(KERN_WARNING "AWE32 Error: Patch header too short\n");
2680                 return -EINVAL;
2681         }
2682         if (copy_from_user(((char*)&patch) + offs, addr + offs,
2683                            AWE_PATCH_INFO_SIZE - offs))
2684                 return -EFAULT;
2685
2686         count -= AWE_PATCH_INFO_SIZE;
2687         if (count < patch.len) {
2688                 printk(KERN_WARNING "AWE32: sample: Patch record too short (%d<%d)\n",
2689                        count, patch.len);
2690                 return -EINVAL;
2691         }
2692
2693         switch (patch.type) {
2694         case AWE_LOAD_INFO:
2695                 rc = awe_load_info(&patch, addr, count);
2696                 break;
2697         case AWE_LOAD_DATA:
2698                 rc = awe_load_data(&patch, addr, count);
2699                 break;
2700         case AWE_OPEN_PATCH:
2701                 rc = awe_open_patch(&patch, addr, count);
2702                 break;
2703         case AWE_CLOSE_PATCH:
2704                 rc = awe_close_patch(&patch, addr, count);
2705                 break;
2706         case AWE_UNLOAD_PATCH:
2707                 rc = awe_unload_patch(&patch, addr, count);
2708                 break;
2709         case AWE_REPLACE_DATA:
2710                 rc = awe_replace_data(&patch, addr, count);
2711                 break;
2712         case AWE_MAP_PRESET:
2713                 rc = awe_load_map(&patch, addr, count);
2714                 break;
2715         /* case AWE_PROBE_INFO:
2716                 rc = awe_probe_info(&patch, addr, count);
2717                 break;*/
2718         case AWE_PROBE_DATA:
2719                 rc = awe_probe_data(&patch, addr, count);
2720                 break;
2721         case AWE_REMOVE_INFO:
2722                 rc = awe_remove_info(&patch, addr, count);
2723                 break;
2724         case AWE_LOAD_CHORUS_FX:
2725                 rc = awe_load_chorus_fx(&patch, addr, count);
2726                 break;
2727         case AWE_LOAD_REVERB_FX:
2728                 rc = awe_load_reverb_fx(&patch, addr, count);
2729                 break;
2730
2731         default:
2732                 printk(KERN_WARNING "AWE32 Error: unknown patch format type %d\n",
2733                        patch.type);
2734                 rc = -EINVAL;
2735         }
2736
2737         return rc;
2738 }
2739
2740
2741 /* create an sf list record */
2742 static int
2743 awe_create_sf(int type, char *name)
2744 {
2745         sf_list *rec;
2746
2747         /* terminate sounds */
2748         awe_reset(0);
2749         rec = (sf_list *)kmalloc(sizeof(*rec), GFP_KERNEL);
2750         if (rec == NULL)
2751                 return 1; /* no memory */
2752         rec->sf_id = current_sf_id + 1;
2753         rec->type = type;
2754         if (/*current_sf_id == 0 ||*/ (type & AWE_PAT_LOCKED) != 0)
2755                 locked_sf_id = current_sf_id + 1;
2756         rec->num_info = awe_free_info();
2757         rec->num_sample = awe_free_sample();
2758         rec->mem_ptr = awe_free_mem_ptr();
2759         rec->infos = rec->last_infos = NULL;
2760         rec->samples = rec->last_samples = NULL;
2761
2762         /* add to linked-list */
2763         rec->next = NULL;
2764         rec->prev = sftail;
2765         if (sftail)
2766                 sftail->next = rec;
2767         else
2768                 sfhead = rec;
2769         sftail = rec;
2770         current_sf_id++;
2771
2772 #ifdef AWE_ALLOW_SAMPLE_SHARING
2773         rec->shared = NULL;
2774         if (name)
2775                 memcpy(rec->name, name, AWE_PATCH_NAME_LEN);
2776         else
2777                 strcpy(rec->name, "*TEMPORARY*");
2778         if (current_sf_id > 1 && name && (type & AWE_PAT_SHARED) != 0) {
2779                 /* is the current font really a shared font? */
2780                 if (is_shared_sf(rec->name)) {
2781                         /* check if the shared font is already installed */
2782                         sf_list *p;
2783                         for (p = rec->prev; p; p = p->prev) {
2784                                 if (is_identical_name(rec->name, p)) {
2785                                         rec->shared = p;
2786                                         break;
2787                                 }
2788                         }
2789                 }
2790         }
2791 #endif /* allow sharing */
2792
2793         return 0;
2794 }
2795
2796
2797 #ifdef AWE_ALLOW_SAMPLE_SHARING
2798
2799 /* check if the given name is a valid shared name */
2800 #define ASC_TO_KEY(c) ((c) - 'A' + 1)
2801 static int is_shared_sf(unsigned char *name)
2802 {
2803         static unsigned char id_head[4] = {
2804                 ASC_TO_KEY('A'), ASC_TO_KEY('W'), ASC_TO_KEY('E'),
2805                 AWE_MAJOR_VERSION,
2806         };
2807         if (memcmp(name, id_head, 4) == 0)
2808                 return TRUE;
2809         return FALSE;
2810 }
2811
2812 /* check if the given name matches to the existing list */
2813 static int is_identical_name(unsigned char *name, sf_list *p)
2814 {
2815         char *id = p->name;
2816         if (is_shared_sf(id) && memcmp(id, name, AWE_PATCH_NAME_LEN) == 0)
2817                 return TRUE;
2818         return FALSE;
2819 }
2820
2821 /* check if the given voice info exists */
2822 static int info_duplicated(sf_list *sf, awe_voice_list *rec)
2823 {
2824         /* search for all sharing lists */
2825         for (; sf; sf = sf->shared) {
2826                 awe_voice_list *p;
2827                 for (p = sf->infos; p; p = p->next) {
2828                         if (p->type == V_ST_NORMAL &&
2829                             p->bank == rec->bank &&
2830                             p->instr == rec->instr &&
2831                             p->v.low == rec->v.low &&
2832                             p->v.high == rec->v.high &&
2833                             p->v.sample == rec->v.sample)
2834                                 return TRUE;
2835                 }
2836         }
2837         return FALSE;
2838 }
2839
2840 #endif /* AWE_ALLOW_SAMPLE_SHARING */
2841
2842
2843 /* free sf_list record */
2844 /* linked-list in this function is not cared */
2845 static void
2846 awe_free_sf(sf_list *sf)
2847 {
2848         if (sf->infos) {
2849                 awe_voice_list *p, *next;
2850                 for (p = sf->infos; p; p = next) {
2851                         next = p->next;
2852                         kfree(p);
2853                 }
2854         }
2855         if (sf->samples) {
2856                 awe_sample_list *p, *next;
2857                 for (p = sf->samples; p; p = next) {
2858                         next = p->next;
2859                         kfree(p);
2860                 }
2861         }
2862         kfree(sf);
2863 }
2864
2865
2866 /* open patch; create sf list and set opened flag */
2867 static int
2868 awe_open_patch(awe_patch_info *patch, const char __user *addr, int count)
2869 {
2870         awe_open_parm parm;
2871         int shared;
2872
2873         if (copy_from_user(&parm, addr + AWE_PATCH_INFO_SIZE, sizeof(parm)))
2874                 return -EFAULT;
2875         shared = FALSE;
2876
2877 #ifdef AWE_ALLOW_SAMPLE_SHARING
2878         if (sftail && (parm.type & AWE_PAT_SHARED) != 0) {
2879                 /* is the previous font the same font? */
2880                 if (is_identical_name(parm.name, sftail)) {
2881                         /* then append to the previous */
2882                         shared = TRUE;
2883                         awe_reset(0);
2884                         if (parm.type & AWE_PAT_LOCKED)
2885                                 locked_sf_id = current_sf_id;
2886                 }
2887         }
2888 #endif /* allow sharing */
2889         if (! shared) {
2890                 if (awe_create_sf(parm.type, parm.name)) {
2891                         printk(KERN_ERR "AWE32: can't open: failed to alloc new list\n");
2892                         return -ENOMEM;
2893                 }
2894         }
2895         patch_opened = TRUE;
2896         return current_sf_id;
2897 }
2898
2899 /* check if the patch is already opened */
2900 static sf_list *
2901 check_patch_opened(int type, char *name)
2902 {
2903         if (! patch_opened) {
2904                 if (awe_create_sf(type, name)) {
2905                         printk(KERN_ERR "AWE32: failed to alloc new list\n");
2906                         return NULL;
2907                 }
2908                 patch_opened = TRUE;
2909                 return sftail;
2910         }
2911         return sftail;
2912 }
2913
2914 /* close the patch; if no voice is loaded, remove the patch */
2915 static int
2916 awe_close_patch(awe_patch_info *patch, const char __user *addr, int count)
2917 {
2918         if (patch_opened && sftail) {
2919                 /* if no voice is loaded, release the current patch */
2920                 if (sftail->infos == NULL) {
2921                         awe_reset(0);
2922                         awe_remove_samples(current_sf_id - 1);
2923                 }
2924         }
2925         patch_opened = 0;
2926         return 0;
2927 }
2928
2929
2930 /* remove the latest patch */
2931 static int
2932 awe_unload_patch(awe_patch_info *patch, const char __user *addr, int count)
2933 {
2934         if (current_sf_id > 0 && current_sf_id > locked_sf_id) {
2935                 awe_reset(0);
2936                 awe_remove_samples(current_sf_id - 1);
2937         }
2938         return 0;
2939 }
2940
2941 /* allocate voice info list records */
2942 static awe_voice_list *
2943 alloc_new_info(void)
2944 {
2945         awe_voice_list *newlist;
2946
2947         newlist = (awe_voice_list *)kmalloc(sizeof(*newlist), GFP_KERNEL);
2948         if (newlist == NULL) {
2949                 printk(KERN_ERR "AWE32: can't alloc info table\n");
2950                 return NULL;
2951         }
2952         return newlist;
2953 }
2954
2955 /* allocate sample info list records */
2956 static awe_sample_list *
2957 alloc_new_sample(void)
2958 {
2959         awe_sample_list *newlist;
2960
2961         newlist = (awe_sample_list *)kmalloc(sizeof(*newlist), GFP_KERNEL);
2962         if (newlist == NULL) {
2963                 printk(KERN_ERR "AWE32: can't alloc sample table\n");
2964                 return NULL;
2965         }
2966         return newlist;
2967 }
2968
2969 /* load voice map */
2970 static int
2971 awe_load_map(awe_patch_info *patch, const char __user *addr, int count)
2972 {
2973         awe_voice_map map;
2974         awe_voice_list *rec, *p;
2975         sf_list *sf;
2976
2977         /* get the link info */
2978         if (count < sizeof(map)) {
2979                 printk(KERN_WARNING "AWE32 Error: invalid patch info length\n");
2980                 return -EINVAL;
2981         }
2982         if (copy_from_user(&map, addr + AWE_PATCH_INFO_SIZE, sizeof(map)))
2983                 return -EFAULT;
2984
2985         /* check if the identical mapping already exists */
2986         p = awe_search_instr(map.map_bank, map.map_instr, map.map_key);
2987         for (; p; p = p->next_instr) {
2988                 if (p->type == V_ST_MAPPED &&
2989                     p->v.start == map.src_instr &&
2990                     p->v.end == map.src_bank &&
2991                     p->v.fixkey == map.src_key)
2992                         return 0; /* already present! */
2993         }
2994
2995         if ((sf = check_patch_opened(AWE_PAT_TYPE_MAP, NULL)) == NULL)
2996                 return -ENOMEM;
2997
2998         if ((rec = alloc_new_info()) == NULL)
2999                 return -ENOMEM;
3000
3001         rec->bank = map.map_bank;
3002         rec->instr = map.map_instr;
3003         rec->type = V_ST_MAPPED;
3004         rec->disabled = FALSE;
3005         awe_init_voice_info(&rec->v);
3006         if (map.map_key >= 0) {
3007                 rec->v.low = map.map_key;
3008                 rec->v.high = map.map_key;
3009         }
3010         rec->v.start = map.src_instr;
3011         rec->v.end = map.src_bank;
3012         rec->v.fixkey = map.src_key;
3013         add_sf_info(sf, rec);
3014         add_info_list(rec);
3015
3016         return 0;
3017 }
3018
3019 #if 0
3020 /* probe preset in the current list -- nothing to be loaded */
3021 static int
3022 awe_probe_info(awe_patch_info *patch, const char __user *addr, int count)
3023 {
3024 #ifdef AWE_ALLOW_SAMPLE_SHARING
3025         awe_voice_map map;
3026         awe_voice_list *p;
3027
3028         if (! patch_opened)
3029                 return -EINVAL;
3030
3031         /* get the link info */
3032         if (count < sizeof(map)) {
3033                 printk(KERN_WARNING "AWE32 Error: invalid patch info length\n");
3034                 return -EINVAL;
3035         }
3036         if (copy_from_user(&map, addr + AWE_PATCH_INFO_SIZE, sizeof(map)))
3037                 return -EFAULT;
3038
3039         /* check if the identical mapping already exists */
3040         if (sftail == NULL)
3041                 return -EINVAL;
3042         p = awe_search_instr(map.src_bank, map.src_instr, map.src_key);
3043         for (; p; p = p->next_instr) {
3044                 if (p->type == V_ST_NORMAL &&
3045                     is_identical_holder(p->holder, sftail) &&
3046                     p->v.low <= map.src_key &&
3047                     p->v.high >= map.src_key)
3048                         return 0; /* already present! */
3049         }
3050 #endif /* allow sharing */
3051         return -EINVAL;
3052 }
3053 #endif
3054
3055 /* probe sample in the current list -- nothing to be loaded */
3056 static int
3057 awe_probe_data(awe_patch_info *patch, const char __user *addr, int count)
3058 {
3059 #ifdef AWE_ALLOW_SAMPLE_SHARING
3060         if (! patch_opened)
3061                 return -EINVAL;
3062
3063         /* search the specified sample by optarg */
3064         if (search_sample_index(sftail, patch->optarg) != NULL)
3065                 return 0;
3066 #endif /* allow sharing */
3067         return -EINVAL;
3068 }
3069
3070
3071 /* remove the present instrument layers */
3072 static int
3073 remove_info(sf_list *sf, int bank, int instr)
3074 {
3075         awe_voice_list *prev, *next, *p;
3076         int removed = 0;
3077
3078         prev = NULL;
3079         for (p = sf->infos; p; p = next) {
3080                 next = p->next;
3081                 if (p->type == V_ST_NORMAL &&
3082                     p->bank == bank && p->instr == instr) {
3083                         /* remove this layer */
3084                         if (prev)
3085                                 prev->next = next;
3086                         else
3087                                 sf->infos = next;
3088                         if (p == sf->last_infos)
3089                                 sf->last_infos = prev;
3090                         sf->num_info--;
3091                         removed++;
3092                         kfree(p);
3093                 } else
3094                         prev = p;
3095         }
3096         if (removed)
3097                 rebuild_preset_list();
3098         return removed;
3099 }
3100
3101 /* load voice information data */
3102 static int
3103 awe_load_info(awe_patch_info *patch, const char __user *addr, int count)
3104 {
3105         int offset;
3106         awe_voice_rec_hdr hdr;
3107         int i;
3108         int total_size;
3109         sf_list *sf;
3110         awe_voice_list *rec;
3111
3112         if (count < AWE_VOICE_REC_SIZE) {
3113                 printk(KERN_WARNING "AWE32 Error: invalid patch info length\n");
3114                 return -EINVAL;
3115         }
3116
3117         offset = AWE_PATCH_INFO_SIZE;
3118         if (copy_from_user((char*)&hdr, addr + offset, AWE_VOICE_REC_SIZE))
3119                 return -EFAULT;
3120         offset += AWE_VOICE_REC_SIZE;
3121
3122         if (hdr.nvoices <= 0 || hdr.nvoices >= 100) {
3123                 printk(KERN_WARNING "AWE32 Error: Invalid voice number %d\n", hdr.nvoices);
3124                 return -EINVAL;
3125         }
3126         total_size = AWE_VOICE_REC_SIZE + AWE_VOICE_INFO_SIZE * hdr.nvoices;
3127         if (count < total_size) {
3128                 printk(KERN_WARNING "AWE32 Error: patch length(%d) is smaller than nvoices(%d)\n",
3129                        count, hdr.nvoices);
3130                 return -EINVAL;
3131         }
3132
3133         if ((sf = check_patch_opened(AWE_PAT_TYPE_MISC, NULL)) == NULL)
3134                 return -ENOMEM;
3135
3136         switch (hdr.write_mode) {
3137         case AWE_WR_EXCLUSIVE:
3138                 /* exclusive mode - if the instrument already exists,
3139                    return error */
3140                 for (rec = sf->infos; rec; rec = rec->next) {
3141                         if (rec->type == V_ST_NORMAL &&
3142                             rec->bank == hdr.bank &&
3143                             rec->instr == hdr.instr)
3144                                 return -EINVAL;
3145                 }
3146                 break;
3147         case AWE_WR_REPLACE:
3148                 /* replace mode - remove the instrument if it already exists */
3149                 remove_info(sf, hdr.bank, hdr.instr);
3150                 break;
3151         }
3152
3153         /* append new layers */
3154         for (i = 0; i < hdr.nvoices; i++) {
3155                 rec = alloc_new_info();
3156                 if (rec == NULL)
3157                         return -ENOMEM;
3158
3159                 rec->bank = hdr.bank;
3160                 rec->instr = hdr.instr;
3161                 rec->type = V_ST_NORMAL;
3162                 rec->disabled = FALSE;
3163
3164                 /* copy awe_voice_info parameters */
3165                 if (copy_from_user(&rec->v, addr + offset, AWE_VOICE_INFO_SIZE)) {
3166                         kfree(rec);
3167                         return -EFAULT;
3168                 }
3169                 offset += AWE_VOICE_INFO_SIZE;
3170 #ifdef AWE_ALLOW_SAMPLE_SHARING
3171                 if (sf && sf->shared) {
3172                         if (info_duplicated(sf, rec)) {
3173                                 kfree(rec);
3174                                 continue;
3175                         }
3176                 }
3177 #endif /* allow sharing */
3178                 if (rec->v.mode & AWE_MODE_INIT_PARM)
3179                         awe_init_voice_parm(&rec->v.parm);
3180                 add_sf_info(sf, rec);
3181                 awe_set_sample(rec);
3182                 add_info_list(rec);
3183         }
3184
3185         return 0;
3186 }
3187
3188
3189 /* remove instrument layers */
3190 static int
3191 awe_remove_info(awe_patch_info *patch, const char __user *addr, int count)
3192 {
3193         unsigned char bank, instr;
3194         sf_list *sf;
3195
3196         if (! patch_opened || (sf = sftail) == NULL) {
3197                 printk(KERN_WARNING "AWE32: remove_info: patch not opened\n");
3198                 return -EINVAL;
3199         }
3200
3201         bank = ((unsigned short)patch->optarg >> 8) & 0xff;
3202         instr = (unsigned short)patch->optarg & 0xff;
3203         if (! remove_info(sf, bank, instr))
3204                 return -EINVAL;
3205         return 0;
3206 }
3207
3208
3209 /* load wave sample data */
3210 static int
3211 awe_load_data(awe_patch_info *patch, const char __user *addr, int count)
3212 {
3213         int offset, size;
3214         int rc;
3215         awe_sample_info tmprec;
3216         awe_sample_list *rec;
3217         sf_list *sf;
3218
3219         if ((sf = check_patch_opened(AWE_PAT_TYPE_MISC, NULL)) == NULL)
3220                 return -ENOMEM;
3221
3222         size = (count - AWE_SAMPLE_INFO_SIZE) / 2;
3223         offset = AWE_PATCH_INFO_SIZE;
3224         if (copy_from_user(&tmprec, addr + offset, AWE_SAMPLE_INFO_SIZE))
3225                 return -EFAULT;
3226         offset += AWE_SAMPLE_INFO_SIZE;
3227         if (size != tmprec.size) {
3228                 printk(KERN_WARNING "AWE32: load: sample size differed (%d != %d)\n",
3229                        tmprec.size, size);
3230                 return -EINVAL;
3231         }
3232
3233         if (search_sample_index(sf, tmprec.sample) != NULL) {
3234 #ifdef AWE_ALLOW_SAMPLE_SHARING
3235                 /* if shared sample, skip this data */
3236                 if (sf->type & AWE_PAT_SHARED)
3237                         return 0;
3238 #endif /* allow sharing */
3239                 DEBUG(1,printk("AWE32: sample data %d already present\n", tmprec.sample));
3240                 return -EINVAL;
3241         }
3242
3243         if ((rec = alloc_new_sample()) == NULL)
3244                 return -ENOMEM;
3245
3246         memcpy(&rec->v, &tmprec, sizeof(tmprec));
3247
3248         if (rec->v.size > 0) {
3249                 if ((rc = awe_write_wave_data(addr, offset, rec, -1)) < 0) {
3250                         kfree(rec);
3251                         return rc;
3252                 }
3253                 sf->mem_ptr += rc;
3254         }
3255
3256         add_sf_sample(sf, rec);
3257         return 0;
3258 }
3259
3260
3261 /* replace wave sample data */
3262 static int
3263 awe_replace_data(awe_patch_info *patch, const char __user *addr, int count)
3264 {
3265         int offset;
3266         int size;
3267         int rc;
3268         int channels;
3269         awe_sample_info cursmp;
3270         int save_mem_ptr;
3271         sf_list *sf;
3272         awe_sample_list *rec;
3273
3274         if (! patch_opened || (sf = sftail) == NULL) {
3275                 printk(KERN_WARNING "AWE32: replace: patch not opened\n");
3276                 return -EINVAL;
3277         }
3278
3279         size = (count - AWE_SAMPLE_INFO_SIZE) / 2;
3280         offset = AWE_PATCH_INFO_SIZE;
3281         if (copy_from_user(&cursmp, addr + offset, AWE_SAMPLE_INFO_SIZE))
3282                 return -EFAULT;
3283         offset += AWE_SAMPLE_INFO_SIZE;
3284         if (cursmp.size == 0 || size != cursmp.size) {
3285                 printk(KERN_WARNING "AWE32: replace: invalid sample size (%d!=%d)\n",
3286                        cursmp.size, size);
3287                 return -EINVAL;
3288         }
3289         channels = patch->optarg;
3290         if (channels <= 0 || channels > AWE_NORMAL_VOICES) {
3291                 printk(KERN_WARNING "AWE32: replace: invalid channels %d\n", channels);
3292                 return -EINVAL;
3293         }
3294
3295         for (rec = sf->samples; rec; rec = rec->next) {
3296                 if (rec->v.sample == cursmp.sample)
3297                         break;
3298         }
3299         if (rec == NULL) {
3300                 printk(KERN_WARNING "AWE32: replace: cannot find existing sample data %d\n",
3301                        cursmp.sample);
3302                 return -EINVAL;
3303         }
3304
3305         if (rec->v.size != cursmp.size) {
3306                 printk(KERN_WARNING "AWE32: replace: exiting size differed (%d!=%d)\n",
3307                        rec->v.size, cursmp.size);
3308                 return -EINVAL;
3309         }
3310
3311         save_mem_ptr = awe_free_mem_ptr();
3312         sftail->mem_ptr = rec->v.start - awe_mem_start;
3313         memcpy(&rec->v, &cursmp, sizeof(cursmp));
3314         rec->v.sf_id = current_sf_id;
3315         if ((rc = awe_write_wave_data(addr, offset, rec, channels)) < 0)
3316                 return rc;
3317         sftail->mem_ptr = save_mem_ptr;
3318
3319         return 0;
3320 }
3321
3322
3323 /*----------------------------------------------------------------*/
3324
3325 static const char __user *readbuf_addr;
3326 static int readbuf_offs;
3327 static int readbuf_flags;
3328
3329 /* initialize read buffer */
3330 static int
3331 readbuf_init(const char __user *addr, int offset, awe_sample_info *sp)
3332 {
3333         readbuf_addr = addr;
3334         readbuf_offs = offset;
3335         readbuf_flags = sp->mode_flags;
3336         return 0;
3337 }
3338
3339 /* read directly from user buffer */
3340 static unsigned short
3341 readbuf_word(int pos)
3342 {
3343         unsigned short c;
3344         /* read from user buffer */
3345         if (readbuf_flags & AWE_SAMPLE_8BITS) {
3346                 unsigned char cc;
3347                 get_user(cc, (unsigned char __user *)(readbuf_addr + readbuf_offs + pos));
3348                 c = (unsigned short)cc << 8; /* convert 8bit -> 16bit */
3349         } else {
3350                 get_user(c, (unsigned short __user *)(readbuf_addr + readbuf_offs + pos * 2));
3351         }
3352         if (readbuf_flags & AWE_SAMPLE_UNSIGNED)
3353                 c ^= 0x8000; /* unsigned -> signed */
3354         return c;
3355 }
3356
3357 #define readbuf_word_cache      readbuf_word
3358 #define readbuf_end()           /**/
3359
3360 /*----------------------------------------------------------------*/
3361
3362 #define BLANK_LOOP_START        8
3363 #define BLANK_LOOP_END          40
3364 #define BLANK_LOOP_SIZE         48
3365
3366 /* loading onto memory - return the actual written size */
3367 static int
3368 awe_write_wave_data(const char __user *addr, int offset, awe_sample_list *list, int channels)
3369 {
3370         int i, truesize, dram_offset;
3371         awe_sample_info *sp = &list->v;
3372         int rc;
3373
3374         /* be sure loop points start < end */
3375         if (sp->loopstart > sp->loopend) {
3376                 int tmp = sp->loopstart;
3377                 sp->loopstart = sp->loopend;
3378                 sp->loopend = tmp;
3379         }
3380
3381         /* compute true data size to be loaded */
3382         truesize = sp->size;
3383         if (sp->mode_flags & (AWE_SAMPLE_BIDIR_LOOP|AWE_SAMPLE_REVERSE_LOOP))
3384                 truesize += sp->loopend - sp->loopstart;
3385         if (sp->mode_flags & AWE_SAMPLE_NO_BLANK)
3386                 truesize += BLANK_LOOP_SIZE;
3387         if (awe_free_mem_ptr() + truesize >= memsize/2) {
3388                 DEBUG(-1,printk("AWE32 Error: Sample memory full\n"));
3389                 return -ENOSPC;
3390         }
3391
3392         /* recalculate address offset */
3393         sp->end -= sp->start;
3394         sp->loopstart -= sp->start;
3395         sp->loopend -= sp->start;
3396
3397         dram_offset = awe_free_mem_ptr() + awe_mem_start;
3398         sp->start = dram_offset;
3399         sp->end += dram_offset;
3400         sp->loopstart += dram_offset;
3401         sp->loopend += dram_offset;
3402
3403         /* set the total size (store onto obsolete checksum value) */
3404         if (sp->size == 0)
3405                 sp->checksum = 0;
3406         else
3407                 sp->checksum = truesize;
3408
3409         if ((rc = awe_open_dram_for_write(dram_offset, channels)) != 0)
3410                 return rc;
3411
3412         if (readbuf_init(addr, offset, sp) < 0)
3413                 return -ENOSPC;
3414
3415         for (i = 0; i < sp->size; i++) {
3416                 unsigned short c;
3417                 c = readbuf_word(i);
3418                 awe_write_dram(c);
3419                 if (i == sp->loopend &&
3420                     (sp->mode_flags & (AWE_SAMPLE_BIDIR_LOOP|AWE_SAMPLE_REVERSE_LOOP))) {
3421                         int looplen = sp->loopend - sp->loopstart;
3422                         /* copy reverse loop */
3423                         int k;
3424                         for (k = 1; k <= looplen; k++) {
3425                                 c = readbuf_word_cache(i - k);
3426                                 awe_write_dram(c);
3427                         }
3428                         if (sp->mode_flags & AWE_SAMPLE_BIDIR_LOOP) {
3429                                 sp->end += looplen;
3430                         } else {
3431                                 sp->start += looplen;
3432                                 sp->end += looplen;
3433                         }
3434                 }
3435         }
3436         readbuf_end();
3437
3438         /* if no blank loop is attached in the sample, add it */
3439         if (sp->mode_flags & AWE_SAMPLE_NO_BLANK) {
3440                 for (i = 0; i < BLANK_LOOP_SIZE; i++)
3441                         awe_write_dram(0);
3442                 if (sp->mode_flags & AWE_SAMPLE_SINGLESHOT) {
3443                         sp->loopstart = sp->end + BLANK_LOOP_START;
3444                         sp->loopend = sp->end + BLANK_LOOP_END;
3445                 }
3446         }
3447
3448         awe_close_dram();
3449
3450         /* initialize FM */
3451         awe_init_fm();
3452
3453         return truesize;
3454 }
3455
3456
3457 /*----------------------------------------------------------------*/
3458
3459 #ifdef AWE_HAS_GUS_COMPATIBILITY
3460
3461 /* calculate GUS envelope time:
3462  * is this correct?  i have no idea..
3463  */
3464 static int
3465 calc_gus_envelope_time(int rate, int start, int end)
3466 {
3467         int r, p, t;
3468         r = (3 - ((rate >> 6) & 3)) * 3;
3469         p = rate & 0x3f;
3470         t = end - start;
3471         if (t < 0) t = -t;
3472         if (13 > r)
3473                 t = t << (13 - r);
3474         else
3475                 t = t >> (r - 13);
3476         return (t * 10) / (p * 441);
3477 }
3478
3479 #define calc_gus_sustain(val)  (0x7f - vol_table[(val)/2])
3480 #define calc_gus_attenuation(val)       vol_table[(val)/2]
3481
3482 /* load GUS patch */
3483 static int
3484 awe_load_guspatch(const char __user *addr, int offs, int size, int pmgr_flag)
3485 {
3486         struct patch_info patch;
3487         awe_voice_info *rec;
3488         awe_sample_info *smp;
3489         awe_voice_list *vrec;
3490         awe_sample_list *smprec;
3491         int sizeof_patch;
3492         int note, rc;
3493         sf_list *sf;
3494
3495         sizeof_patch = (int)((long)&patch.data[0] - (long)&patch); /* header size */
3496         if (size < sizeof_patch) {
3497                 printk(KERN_WARNING "AWE32 Error: Patch header too short\n");
3498                 return -EINVAL;
3499         }
3500         if (copy_from_user(((char*)&patch) + offs, addr + offs, sizeof_patch - offs))
3501                 return -EFAULT;
3502         size -= sizeof_patch;
3503         if (size < patch.len) {
3504                 printk(KERN_WARNING "AWE32 Error: Patch record too short (%d<%d)\n",
3505                        size, patch.len);
3506                 return -EINVAL;
3507         }
3508         if ((sf = check_patch_opened(AWE_PAT_TYPE_GUS, NULL)) == NULL)
3509                 return -ENOMEM;
3510         if ((smprec = alloc_new_sample()) == NULL)
3511                 return -ENOMEM;
3512         if ((vrec = alloc_new_info()) == NULL) {
3513                 kfree(smprec);
3514                 return -ENOMEM;
3515         }
3516
3517         smp = &smprec->v;
3518         smp->sample = sf->num_sample;
3519         smp->start = 0;
3520         smp->end = patch.len;
3521         smp->loopstart = patch.loop_start;
3522         smp->loopend = patch.loop_end;
3523         smp->size = patch.len;
3524
3525         /* set up mode flags */
3526         smp->mode_flags = 0;
3527         if (!(patch.mode & WAVE_16_BITS))
3528                 smp->mode_flags |= AWE_SAMPLE_8BITS;
3529         if (patch.mode & WAVE_UNSIGNED)
3530                 smp->mode_flags |= AWE_SAMPLE_UNSIGNED;
3531         smp->mode_flags |= AWE_SAMPLE_NO_BLANK;
3532         if (!(patch.mode & (WAVE_LOOPING|WAVE_BIDIR_LOOP|WAVE_LOOP_BACK)))
3533                 smp->mode_flags |= AWE_SAMPLE_SINGLESHOT;
3534         if (patch.mode & WAVE_BIDIR_LOOP)
3535                 smp->mode_flags |= AWE_SAMPLE_BIDIR_LOOP;
3536         if (patch.mode & WAVE_LOOP_BACK)
3537                 smp->mode_flags |= AWE_SAMPLE_REVERSE_LOOP;
3538
3539         DEBUG(0,printk("AWE32: [sample %d mode %x]\n", patch.instr_no, smp->mode_flags));
3540         if (patch.mode & WAVE_16_BITS) {
3541                 /* convert to word offsets */
3542                 smp->size /= 2;
3543                 smp->end /= 2;
3544                 smp->loopstart /= 2;
3545                 smp->loopend /= 2;
3546         }
3547         smp->checksum_flag = 0;
3548         smp->checksum = 0;
3549
3550         if ((rc = awe_write_wave_data(addr, sizeof_patch, smprec, -1)) < 0)
3551                 return rc;
3552         sf->mem_ptr += rc;
3553         add_sf_sample(sf, smprec);
3554
3555         /* set up voice info */
3556         rec = &vrec->v;
3557         awe_init_voice_info(rec);
3558         rec->sample = sf->num_info; /* the last sample */
3559         rec->rate_offset = calc_rate_offset(patch.base_freq);
3560         note = freq_to_note(patch.base_note);
3561         rec->root = note / 100;
3562         rec->tune = -(note % 100);
3563         rec->low = freq_to_note(patch.low_note) / 100;
3564         rec->high = freq_to_note(patch.high_note) / 100;
3565         DEBUG(1,printk("AWE32: [gus base offset=%d, note=%d, range=%d-%d(%d-%d)]\n",
3566                        rec->rate_offset, note,
3567                        rec->low, rec->high,
3568               patch.low_note, patch.high_note));
3569         /* panning position; -128 - 127 => 0-127 */
3570         rec->pan = (patch.panning + 128) / 2;
3571
3572         /* detuning is ignored */
3573         /* 6points volume envelope */
3574         if (patch.mode & WAVE_ENVELOPES) {
3575                 int attack, hold, decay, release;
3576                 attack = calc_gus_envelope_time
3577                         (patch.env_rate[0], 0, patch.env_offset[0]);
3578                 hold = calc_gus_envelope_time
3579                         (patch.env_rate[1], patch.env_offset[0],
3580                          patch.env_offset[1]);
3581                 decay = calc_gus_envelope_time
3582                         (patch.env_rate[2], patch.env_offset[1],
3583                          patch.env_offset[2]);
3584                 release = calc_gus_envelope_time
3585                         (patch.env_rate[3], patch.env_offset[1],
3586                          patch.env_offset[4]);
3587                 release += calc_gus_envelope_time
3588                         (patch.env_rate[4], patch.env_offset[3],
3589                          patch.env_offset[4]);
3590                 release += calc_gus_envelope_time
3591                         (patch.env_rate[5], patch.env_offset[4],
3592                          patch.env_offset[5]);
3593                 rec->parm.volatkhld = (calc_parm_hold(hold) << 8) |
3594                         calc_parm_attack(attack);
3595                 rec->parm.voldcysus = (calc_gus_sustain(patch.env_offset[2]) << 8) |
3596                         calc_parm_decay(decay);
3597                 rec->parm.volrelease = 0x8000 | calc_parm_decay(release);
3598                 DEBUG(2,printk("AWE32: [gusenv atk=%d, hld=%d, dcy=%d, rel=%d]\n", attack, hold, decay, release));
3599                 rec->attenuation = calc_gus_attenuation(patch.env_offset[0]);
3600         }
3601
3602         /* tremolo effect */
3603         if (patch.mode & WAVE_TREMOLO) {
3604                 int rate = (patch.tremolo_rate * 1000 / 38) / 42;
3605                 rec->parm.tremfrq = ((patch.tremolo_depth / 2) << 8) | rate;
3606                 DEBUG(2,printk("AWE32: [gusenv tremolo rate=%d, dep=%d, tremfrq=%x]\n",
3607                                patch.tremolo_rate, patch.tremolo_depth,
3608                                rec->parm.tremfrq));
3609         }
3610         /* vibrato effect */
3611         if (patch.mode & WAVE_VIBRATO) {
3612                 int rate = (patch.vibrato_rate * 1000 / 38) / 42;
3613                 rec->parm.fm2frq2 = ((patch.vibrato_depth / 6) << 8) | rate;
3614                 DEBUG(2,printk("AWE32: [gusenv vibrato rate=%d, dep=%d, tremfrq=%x]\n",
3615                                patch.tremolo_rate, patch.tremolo_depth,
3616                                rec->parm.tremfrq));
3617         }
3618
3619         /* scale_freq, scale_factor, volume, and fractions not implemented */
3620
3621         /* append to the tail of the list */
3622         vrec->bank = ctrls[AWE_MD_GUS_BANK];
3623         vrec->instr = patch.instr_no;
3624         vrec->disabled = FALSE;
3625         vrec->type = V_ST_NORMAL;
3626
3627         add_sf_info(sf, vrec);
3628         add_info_list(vrec);
3629
3630         /* set the voice index */
3631         awe_set_sample(vrec);
3632
3633         return 0;
3634 }
3635
3636 #endif  /* AWE_HAS_GUS_COMPATIBILITY */
3637
3638 /*
3639  * sample and voice list handlers
3640  */
3641
3642 /* append this to the current sf list */
3643 static void add_sf_info(sf_list *sf, awe_voice_list *rec)
3644 {
3645         if (sf == NULL)
3646                 return;
3647         rec->holder = sf;
3648         rec->v.sf_id = sf->sf_id;
3649         if (sf->last_infos)
3650                 sf->last_infos->next = rec;
3651         else
3652                 sf->infos = rec;
3653         sf->last_infos = rec;
3654         rec->next = NULL;
3655         sf->num_info++;
3656 }
3657
3658 /* prepend this sample to sf list */
3659 static void add_sf_sample(sf_list *sf, awe_sample_list *rec)
3660 {
3661         if (sf == NULL)
3662                 return;
3663         rec->holder = sf;
3664         rec->v.sf_id = sf->sf_id;
3665         if (sf->last_samples)
3666                 sf->last_samples->next = rec;
3667         else
3668                 sf->samples = rec;
3669         sf->last_samples = rec;
3670         rec->next = NULL;
3671         sf->num_sample++;
3672 }
3673
3674 /* purge the old records which don't belong with the same file id */
3675 static void purge_old_list(awe_voice_list *rec, awe_voice_list *next)
3676 {
3677         rec->next_instr = next;
3678         if (rec->bank == AWE_DRUM_BANK) {
3679                 /* remove samples with the same note range */
3680                 awe_voice_list *cur, *prev = rec;
3681                 int low = rec->v.low;
3682                 int high = rec->v.high;
3683                 for (cur = next; cur; cur = cur->next_instr) {
3684                         if (cur->v.low == low &&
3685                             cur->v.high == high &&
3686                             ! is_identical_holder(cur->holder, rec->holder))
3687                                 prev->next_instr = cur->next_instr;
3688                         else
3689                                 prev = cur;
3690                 }
3691         } else {
3692                 if (! is_identical_holder(next->holder, rec->holder))
3693                         /* remove all samples */
3694                         rec->next_instr = NULL;
3695         }
3696 }
3697
3698 /* prepend to top of the preset table */
3699 static void add_info_list(awe_voice_list *rec)
3700 {
3701         awe_voice_list *prev, *cur;
3702         int key;
3703
3704         if (rec->disabled)
3705                 return;
3706
3707         key = awe_search_key(rec->bank, rec->instr, rec->v.low);
3708         prev = NULL;
3709         for (cur = preset_table[key]; cur; cur = cur->next_bank) {
3710                 /* search the first record with the same bank number */
3711                 if (cur->instr == rec->instr && cur->bank == rec->bank) {
3712                         /* replace the list with the new record */
3713                         rec->next_bank = cur->next_bank;
3714                         if (prev)
3715                                 prev->next_bank = rec;
3716                         else
3717                                 preset_table[key] = rec;
3718                         purge_old_list(rec, cur);
3719                         return;
3720                 }
3721                 prev = cur;
3722         }
3723
3724         /* this is the first bank record.. just add this */
3725         rec->next_instr = NULL;
3726         rec->next_bank = preset_table[key];
3727         preset_table[key] = rec;
3728 }
3729
3730 /* remove samples later than the specified sf_id */
3731 static void
3732 awe_remove_samples(int sf_id)
3733 {
3734         sf_list *p, *prev;
3735
3736         if (sf_id <= 0) {
3737                 awe_reset_samples();
3738                 return;
3739         }
3740         /* already removed? */
3741         if (current_sf_id <= sf_id)
3742                 return;
3743
3744         for (p = sftail; p; p = prev) {
3745                 if (p->sf_id <= sf_id)
3746                         break;
3747                 prev = p->prev;
3748                 awe_free_sf(p);
3749         }
3750         sftail = p;
3751         if (sftail) {
3752                 sf_id = sftail->sf_id;
3753                 sftail->next = NULL;
3754         } else {
3755                 sf_id = 0;
3756                 sfhead = NULL;
3757         }
3758         current_sf_id = sf_id;
3759         if (locked_sf_id > sf_id)
3760                 locked_sf_id = sf_id;
3761
3762         rebuild_preset_list();
3763 }
3764
3765 /* rebuild preset search list */
3766 static void rebuild_preset_list(void)
3767 {
3768         sf_list *p;
3769         awe_voice_list *rec;
3770
3771         memset(preset_table, 0, sizeof(preset_table));
3772
3773         for (p = sfhead; p; p = p->next) {
3774                 for (rec = p->infos; rec; rec = rec->next)
3775                         add_info_list(rec);
3776         }
3777 }
3778
3779 /* compare the given sf_id pair */
3780 static int is_identical_holder(sf_list *sf1, sf_list *sf2)
3781 {
3782         if (sf1 == NULL || sf2 == NULL)
3783                 return FALSE;
3784         if (sf1 == sf2)
3785                 return TRUE;
3786 #ifdef AWE_ALLOW_SAMPLE_SHARING
3787         {
3788                 /* compare with the sharing id */
3789                 sf_list *p;
3790                 int counter = 0;
3791                 if (sf1->sf_id < sf2->sf_id) { /* make sure id1 > id2 */
3792                         sf_list *tmp; tmp = sf1; sf1 = sf2; sf2 = tmp;
3793                 }
3794                 for (p = sf1->shared; p; p = p->shared) {
3795                         if (counter++ > current_sf_id)
3796                                 break; /* strange sharing loop.. quit */
3797                         if (p == sf2)
3798                                 return TRUE;
3799                 }
3800         }
3801 #endif /* allow sharing */
3802         return FALSE;
3803 }
3804
3805 /* search the sample index matching with the given sample id */
3806 static awe_sample_list *
3807 search_sample_index(sf_list *sf, int sample)
3808 {
3809         awe_sample_list *p;
3810 #ifdef AWE_ALLOW_SAMPLE_SHARING
3811         int counter = 0;
3812         while (sf) {
3813                 for (p = sf->samples; p; p = p->next) {
3814                         if (p->v.sample == sample)
3815                                 return p;
3816                 }
3817                 sf = sf->shared;
3818                 if (counter++ > current_sf_id)
3819                         break; /* strange sharing loop.. quit */
3820         }
3821 #else
3822         if (sf) {
3823                 for (p = sf->samples; p; p = p->next) {
3824                         if (p->v.sample == sample)
3825                                 return p;
3826                 }
3827         }
3828 #endif
3829         return NULL;
3830 }
3831
3832 /* search the specified sample */
3833 /* non-zero = found */
3834 static short
3835 awe_set_sample(awe_voice_list *rec)
3836 {
3837         awe_sample_list *smp;
3838         awe_voice_info *vp = &rec->v;
3839
3840         vp->index = 0;
3841         if ((smp = search_sample_index(rec->holder, vp->sample)) == NULL)
3842                 return 0;
3843
3844         /* set the actual sample offsets */
3845         vp->start += smp->v.start;
3846         vp->end += smp->v.end;
3847         vp->loopstart += smp->v.loopstart;
3848         vp->loopend += smp->v.loopend;
3849         /* copy mode flags */
3850         vp->mode = smp->v.mode_flags;
3851         /* set flag */
3852         vp->index = 1;
3853
3854         return 1;
3855 }
3856
3857
3858 /*
3859  * voice allocation
3860  */
3861
3862 /* look for all voices associated with the specified note & velocity */
3863 static int
3864 awe_search_multi_voices(awe_voice_list *rec, int note, int velocity,
3865                         awe_voice_info **vlist)
3866 {
3867         int nvoices;
3868
3869         nvoices = 0;
3870         for (; rec; rec = rec->next_instr) {
3871                 if (note >= rec->v.low &&
3872                     note <= rec->v.high &&
3873                     velocity >= rec->v.vellow &&
3874                     velocity <= rec->v.velhigh) {
3875                         if (rec->type == V_ST_MAPPED) {
3876                                 /* mapper */
3877                                 vlist[0] = &rec->v;
3878                                 return -1;
3879                         }
3880                         vlist[nvoices++] = &rec->v;
3881                         if (nvoices >= AWE_MAX_VOICES)
3882                                 break;
3883                 }
3884         }
3885         return nvoices;
3886 }
3887
3888 /* store the voice list from the specified note and velocity.
3889    if the preset is mapped, seek for the destination preset, and rewrite
3890    the note number if necessary.
3891    */
3892 static int
3893 really_alloc_voices(int bank, int instr, int *note, int velocity, awe_voice_info **vlist)
3894 {
3895         int nvoices;
3896         awe_voice_list *vrec;
3897         int level = 0;
3898
3899         for (;;) {
3900                 vrec = awe_search_instr(bank, instr, *note);
3901                 nvoices = awe_search_multi_voices(vrec, *note, velocity, vlist);
3902                 if (nvoices == 0) {
3903                         if (bank == AWE_DRUM_BANK)
3904                                 /* search default drumset */
3905                                 vrec = awe_search_instr(bank, ctrls[AWE_MD_DEF_DRUM], *note);
3906                         else
3907                                 /* search default preset */
3908                                 vrec = awe_search_instr(ctrls[AWE_MD_DEF_BANK], instr, *note);
3909                         nvoices = awe_search_multi_voices(vrec, *note, velocity, vlist);
3910                 }
3911                 if (nvoices == 0) {
3912                         if (bank == AWE_DRUM_BANK && ctrls[AWE_MD_DEF_DRUM] != 0)
3913                                 /* search default drumset */
3914                                 vrec = awe_search_instr(bank, 0, *note);
3915                         else if (bank != AWE_DRUM_BANK && ctrls[AWE_MD_DEF_BANK] != 0)
3916                                 /* search default preset */
3917                                 vrec = awe_search_instr(0, instr, *note);
3918                         nvoices = awe_search_multi_voices(vrec, *note, velocity, vlist);
3919                 }
3920                 if (nvoices < 0) { /* mapping */
3921                         int key = vlist[0]->fixkey;
3922                         instr = vlist[0]->start;
3923                         bank = vlist[0]->end;
3924                         if (level++ > 5) {
3925                                 printk(KERN_ERR "AWE32: too deep mapping level\n");
3926                                 return 0;
3927                         }
3928                         if (key >= 0)
3929                                 *note = key;
3930                 } else
3931                         break;
3932         }
3933
3934         return nvoices;
3935 }
3936
3937 /* allocate voices corresponding note and velocity; supports multiple insts. */
3938 static void
3939 awe_alloc_multi_voices(int ch, int note, int velocity, int key)
3940 {
3941         int i, v, nvoices, bank;
3942         awe_voice_info *vlist[AWE_MAX_VOICES];
3943
3944         if (MULTI_LAYER_MODE() && IS_DRUM_CHANNEL(ch))
3945                 bank = AWE_DRUM_BANK; /* always search drumset */
3946         else
3947                 bank = channels[ch].bank;
3948
3949         /* check the possible voices; note may be changeable if mapped */
3950         nvoices = really_alloc_voices(bank, channels[ch].instr,
3951                                       &note, velocity, vlist);
3952
3953         /* set the voices */
3954         current_alloc_time++;
3955         for (i = 0; i < nvoices; i++) {
3956                 v = awe_clear_voice();
3957                 voices[v].key = key;
3958                 voices[v].ch = ch;
3959                 voices[v].note = note;
3960                 voices[v].velocity = velocity;
3961                 voices[v].time = current_alloc_time;
3962                 voices[v].cinfo = &channels[ch];
3963                 voices[v].sample = vlist[i];
3964                 voices[v].state = AWE_ST_MARK;
3965                 voices[v].layer = nvoices - i - 1;  /* in reverse order */
3966         }
3967
3968         /* clear the mark in allocated voices */
3969         for (i = 0; i < awe_max_voices; i++) {
3970                 if (voices[i].state == AWE_ST_MARK)
3971                         voices[i].state = AWE_ST_OFF;
3972
3973         }
3974 }
3975
3976
3977 /* search an empty voice.
3978    if no empty voice is found, at least terminate a voice
3979    */
3980 static int
3981 awe_clear_voice(void)
3982 {
3983         enum {
3984                 OFF=0, RELEASED, SUSTAINED, PLAYING, END
3985         };
3986         struct voice_candidate_t {
3987                 int best;
3988                 int time;
3989                 int vtarget;
3990         } candidate[END];
3991         int i, type, vtarget;
3992
3993         vtarget = 0xffff;
3994         for (type = OFF; type < END; type++) {
3995                 candidate[type].best = -1;
3996                 candidate[type].time = current_alloc_time + 1;
3997                 candidate[type].vtarget = vtarget;
3998         }
3999
4000         for (i = 0; i < awe_max_voices; i++) {
4001                 if (voices[i].state & AWE_ST_OFF)
4002                         type = OFF;
4003                 else if (voices[i].state & AWE_ST_RELEASED)
4004                         type = RELEASED;
4005                 else if (voices[i].state & AWE_ST_SUSTAINED)
4006                         type = SUSTAINED;
4007                 else if (voices[i].state & ~AWE_ST_MARK)
4008                         type = PLAYING;
4009                 else
4010                         continue;
4011 #ifdef AWE_CHECK_VTARGET
4012                 /* get current volume */
4013                 vtarget = (awe_peek_dw(AWE_VTFT(i)) >> 16) & 0xffff;
4014 #endif
4015                 if (candidate[type].best < 0 ||
4016                     vtarget < candidate[type].vtarget ||
4017                     (vtarget == candidate[type].vtarget &&
4018                      voices[i].time < candidate[type].time)) {
4019                         candidate[type].best = i;
4020                         candidate[type].time = voices[i].time;
4021                         candidate[type].vtarget = vtarget;
4022                 }
4023         }
4024
4025         for (type = OFF; type < END; type++) {
4026                 if ((i = candidate[type].best) >= 0) {
4027                         if (voices[i].state != AWE_ST_OFF)
4028                                 awe_terminate(i);
4029                         awe_voice_init(i, TRUE);
4030                         return i;
4031                 }
4032         }
4033         return 0;
4034 }
4035
4036
4037 /* search sample for the specified note & velocity and set it on the voice;
4038  * note that voice is the voice index (not channel index)
4039  */
4040 static void
4041 awe_alloc_one_voice(int voice, int note, int velocity)
4042 {
4043         int ch, nvoices, bank;
4044         awe_voice_info *vlist[AWE_MAX_VOICES];
4045
4046         ch = voices[voice].ch;
4047         if (MULTI_LAYER_MODE() && IS_DRUM_CHANNEL(voice))
4048                 bank = AWE_DRUM_BANK; /* always search drumset */
4049         else
4050                 bank = voices[voice].cinfo->bank;
4051
4052         nvoices = really_alloc_voices(bank, voices[voice].cinfo->instr,
4053                                       &note, velocity, vlist);
4054         if (nvoices > 0) {
4055                 voices[voice].time = ++current_alloc_time;
4056                 voices[voice].sample = vlist[0]; /* use the first one */
4057                 voices[voice].layer = 0;
4058                 voices[voice].note = note;
4059                 voices[voice].velocity = velocity;
4060         }
4061 }
4062
4063
4064 /*
4065  * sequencer2 functions
4066  */
4067
4068 /* search an empty voice; used by sequencer2 */
4069 static int
4070 awe_alloc(int dev, int chn, int note, struct voice_alloc_info *alloc)
4071 {
4072         playing_mode = AWE_PLAY_MULTI2;
4073         awe_info.nr_voices = AWE_MAX_CHANNELS;
4074         return awe_clear_voice();
4075 }
4076
4077
4078 /* set up voice; used by sequencer2 */
4079 static void
4080 awe_setup_voice(int dev, int voice, int chn)
4081 {
4082         struct channel_info *info;
4083         if (synth_devs[dev] == NULL ||
4084             (info = &synth_devs[dev]->chn_info[chn]) == NULL)
4085                 return;
4086
4087         if (voice < 0 || voice >= awe_max_voices)
4088                 return;
4089
4090         DEBUG(2,printk("AWE32: [setup(%d) ch=%d]\n", voice, chn));
4091         channels[chn].expression_vol = info->controllers[CTL_EXPRESSION];
4092         channels[chn].main_vol = info->controllers[CTL_MAIN_VOLUME];
4093         channels[chn].panning =
4094                 info->controllers[CTL_PAN] * 2 - 128; /* signed 8bit */
4095         channels[chn].bender = info->bender_value; /* zero center */
4096         channels[chn].bank = info->controllers[CTL_BANK_SELECT];
4097         channels[chn].sustained = info->controllers[CTL_SUSTAIN];
4098         if (info->controllers[CTL_EXT_EFF_DEPTH]) {
4099                 FX_SET(&channels[chn].fx, AWE_FX_REVERB,
4100                        info->controllers[CTL_EXT_EFF_DEPTH] * 2);
4101         }
4102         if (info->controllers[CTL_CHORUS_DEPTH]) {
4103                 FX_SET(&channels[chn].fx, AWE_FX_CHORUS,
4104                        info->controllers[CTL_CHORUS_DEPTH] * 2);
4105         }
4106         awe_set_instr(dev, chn, info->pgm_num);
4107 }
4108
4109
4110 #ifdef CONFIG_AWE32_MIXER
4111 /*
4112  * AWE32 mixer device control
4113  */
4114
4115 static int awe_mixer_ioctl(int dev, unsigned int cmd, void __user *arg);
4116
4117 static int my_mixerdev = -1;
4118
4119 static struct mixer_operations awe_mixer_operations = {
4120         .owner  = THIS_MODULE,
4121         .id     = "AWE",
4122         .name   = "AWE32 Equalizer",
4123         .ioctl  = awe_mixer_ioctl,
4124 };
4125
4126 static void __init attach_mixer(void)
4127 {
4128         if ((my_mixerdev = sound_alloc_mixerdev()) >= 0) {
4129                 mixer_devs[my_mixerdev] = &awe_mixer_operations;
4130         }
4131 }
4132
4133 static void unload_mixer(void)
4134 {
4135         if (my_mixerdev >= 0)
4136                 sound_unload_mixerdev(my_mixerdev);
4137 }
4138
4139 static int
4140 awe_mixer_ioctl(int dev, unsigned int cmd, void __user * arg)
4141 {
4142         int i, level, value;
4143
4144         if (((cmd >> 8) & 0xff) != 'M')
4145                 return -EINVAL;
4146
4147         if (get_user(level, (int __user *)arg))
4148                 return -EFAULT;
4149         level = ((level & 0xff) + (level >> 8)) / 2;
4150         DEBUG(0,printk("AWEMix: cmd=%x val=%d\n", cmd & 0xff, level));
4151
4152         if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
4153                 switch (cmd & 0xff) {
4154                 case SOUND_MIXER_BASS:
4155                         value = level * 12 / 100;
4156                         if (value >= 12)
4157                                 value = 11;
4158                         ctrls[AWE_MD_BASS_LEVEL] = value;
4159                         awe_update_equalizer();
4160                         break;
4161                 case SOUND_MIXER_TREBLE:
4162                         value = level * 12 / 100;
4163                         if (value >= 12)
4164                                 value = 11;
4165                         ctrls[AWE_MD_TREBLE_LEVEL] = value;
4166                         awe_update_equalizer();
4167                         break;
4168                 case SOUND_MIXER_VOLUME:
4169                         level = level * 127 / 100;
4170                         if (level >= 128) level = 127;
4171                         atten_relative = FALSE;
4172                         atten_offset = vol_table[level];
4173                         awe_update_volume();
4174                         break;
4175                 }
4176         }
4177         switch (cmd & 0xff) {
4178         case SOUND_MIXER_BASS:
4179                 level = ctrls[AWE_MD_BASS_LEVEL] * 100 / 24;
4180                 level = (level << 8) | level;
4181                 break;
4182         case SOUND_MIXER_TREBLE:
4183                 level = ctrls[AWE_MD_TREBLE_LEVEL] * 100 / 24;
4184                 level = (level << 8) | level;
4185                 break;
4186         case SOUND_MIXER_VOLUME:
4187                 value = atten_offset;
4188                 if (atten_relative)
4189                         value += ctrls[AWE_MD_ZERO_ATTEN];
4190                 for (i = 127; i > 0; i--) {
4191                         if (value <= vol_table[i])
4192                                 break;
4193                 }
4194                 level = i * 100 / 127;
4195                 level = (level << 8) | level;
4196                 break;
4197         case SOUND_MIXER_DEVMASK:
4198                 level = SOUND_MASK_BASS|SOUND_MASK_TREBLE|SOUND_MASK_VOLUME;
4199                 break;
4200         default:
4201                 level = 0;
4202                 break;
4203         }
4204         if (put_user(level, (int __user *)arg))
4205                 return -EFAULT;
4206         return level;
4207 }
4208 #endif /* CONFIG_AWE32_MIXER */
4209
4210
4211 /*
4212  * initialization of Emu8000
4213  */
4214
4215 /* intiailize audio channels */
4216 static void
4217 awe_init_audio(void)
4218 {
4219         int ch;
4220
4221         /* turn off envelope engines */
4222         for (ch = 0; ch < AWE_MAX_VOICES; ch++) {
4223                 awe_poke(AWE_DCYSUSV(ch), 0x80);
4224         }
4225
4226         /* reset all other parameters to zero */
4227         for (ch = 0; ch < AWE_MAX_VOICES; ch++) {
4228                 awe_poke(AWE_ENVVOL(ch), 0);
4229                 awe_poke(AWE_ENVVAL(ch), 0);
4230                 awe_poke(AWE_DCYSUS(ch), 0);
4231                 awe_poke(AWE_ATKHLDV(ch), 0);
4232                 awe_poke(AWE_LFO1VAL(ch), 0);
4233                 awe_poke(AWE_ATKHLD(ch), 0);
4234                 awe_poke(AWE_LFO2VAL(ch), 0);
4235                 awe_poke(AWE_IP(ch), 0);
4236                 awe_poke(AWE_IFATN(ch), 0);
4237                 awe_poke(AWE_PEFE(ch), 0);
4238                 awe_poke(AWE_FMMOD(ch), 0);
4239                 awe_poke(AWE_TREMFRQ(ch), 0);
4240                 awe_poke(AWE_FM2FRQ2(ch), 0);
4241                 awe_poke_dw(AWE_PTRX(ch), 0);
4242                 awe_poke_dw(AWE_VTFT(ch), 0);
4243                 awe_poke_dw(AWE_PSST(ch), 0);
4244                 awe_poke_dw(AWE_CSL(ch), 0);
4245                 awe_poke_dw(AWE_CCCA(ch), 0);
4246         }
4247
4248         for (ch = 0; ch < AWE_MAX_VOICES; ch++) {
4249                 awe_poke_dw(AWE_CPF(ch), 0);
4250                 awe_poke_dw(AWE_CVCF(ch), 0);
4251         }
4252 }
4253
4254
4255 /* initialize DMA address */
4256 static void
4257 awe_init_dma(void)
4258 {
4259         awe_poke_dw(AWE_SMALR, 0);
4260         awe_poke_dw(AWE_SMARR, 0);
4261         awe_poke_dw(AWE_SMALW, 0);
4262         awe_poke_dw(AWE_SMARW, 0);
4263 }
4264
4265
4266 /* initialization arrays; from ADIP */
4267
4268 static unsigned short init1[128] = {
4269         0x03ff, 0x0030,  0x07ff, 0x0130, 0x0bff, 0x0230,  0x0fff, 0x0330,
4270         0x13ff, 0x0430,  0x17ff, 0x0530, 0x1bff, 0x0630,  0x1fff, 0x0730,
4271         0x23ff, 0x0830,  0x27ff, 0x0930, 0x2bff, 0x0a30,  0x2fff, 0x0b30,
4272         0x33ff, 0x0c30,  0x37ff, 0x0d30, 0x3bff, 0x0e30,  0x3fff, 0x0f30,
4273
4274         0x43ff, 0x0030,  0x47ff, 0x0130, 0x4bff, 0x0230,  0x4fff, 0x0330,
4275         0x53ff, 0x0430,  0x57ff, 0x0530, 0x5bff, 0x0630,  0x5fff, 0x0730,
4276         0x63ff, 0x0830,  0x67ff, 0x0930, 0x6bff, 0x0a30,  0x6fff, 0x0b30,
4277         0x73ff, 0x0c30,  0x77ff, 0x0d30, 0x7bff, 0x0e30,  0x7fff, 0x0f30,
4278
4279         0x83ff, 0x0030,  0x87ff, 0x0130, 0x8bff, 0x0230,  0x8fff, 0x0330,
4280         0x93ff, 0x0430,  0x97ff, 0x0530, 0x9bff, 0x0630,  0x9fff, 0x0730,
4281         0xa3ff, 0x0830,  0xa7ff, 0x0930, 0xabff, 0x0a30,  0xafff, 0x0b30,
4282         0xb3ff, 0x0c30,  0xb7ff, 0x0d30, 0xbbff, 0x0e30,  0xbfff, 0x0f30,
4283
4284         0xc3ff, 0x0030,  0xc7ff, 0x0130, 0xcbff, 0x0230,  0xcfff, 0x0330,
4285         0xd3ff, 0x0430,  0xd7ff, 0x0530, 0xdbff, 0x0630,  0xdfff, 0x0730,
4286         0xe3ff, 0x0830,  0xe7ff, 0x0930, 0xebff, 0x0a30,  0xefff, 0x0b30,
4287         0xf3ff, 0x0c30,  0xf7ff, 0x0d30, 0xfbff, 0x0e30,  0xffff, 0x0f30,
4288 };
4289
4290 static unsigned short init2[128] = {
4291         0x03ff, 0x8030, 0x07ff, 0x8130, 0x0bff, 0x8230, 0x0fff, 0x8330,
4292         0x13ff, 0x8430, 0x17ff, 0x8530, 0x1bff, 0x8630, 0x1fff, 0x8730,
4293         0x23ff, 0x8830, 0x27ff, 0x8930, 0x2bff, 0x8a30, 0x2fff, 0x8b30,
4294         0x33ff, 0x8c30, 0x37ff, 0x8d30, 0x3bff, 0x8e30, 0x3fff, 0x8f30,
4295
4296         0x43ff, 0x8030, 0x47ff, 0x8130, 0x4bff, 0x8230, 0x4fff, 0x8330,
4297         0x53ff, 0x8430, 0x57ff, 0x8530, 0x5bff, 0x8630, 0x5fff, 0x8730,
4298         0x63ff, 0x8830, 0x67ff, 0x8930, 0x6bff, 0x8a30, 0x6fff, 0x8b30,
4299         0x73ff, 0x8c30, 0x77ff, 0x8d30, 0x7bff, 0x8e30, 0x7fff, 0x8f30,
4300
4301         0x83ff, 0x8030, 0x87ff, 0x8130, 0x8bff, 0x8230, 0x8fff, 0x8330,
4302         0x93ff, 0x8430, 0x97ff, 0x8530, 0x9bff, 0x8630, 0x9fff, 0x8730,
4303         0xa3ff, 0x8830, 0xa7ff, 0x8930, 0xabff, 0x8a30, 0xafff, 0x8b30,
4304         0xb3ff, 0x8c30, 0xb7ff, 0x8d30, 0xbbff, 0x8e30, 0xbfff, 0x8f30,
4305
4306         0xc3ff, 0x8030, 0xc7ff, 0x8130, 0xcbff, 0x8230, 0xcfff, 0x8330,
4307         0xd3ff, 0x8430, 0xd7ff, 0x8530, 0xdbff, 0x8630, 0xdfff, 0x8730,
4308         0xe3ff, 0x8830, 0xe7ff, 0x8930, 0xebff, 0x8a30, 0xefff, 0x8b30,
4309         0xf3ff, 0x8c30, 0xf7ff, 0x8d30, 0xfbff, 0x8e30, 0xffff, 0x8f30,
4310 };
4311
4312 static unsigned short init3[128] = {
4313         0x0C10, 0x8470, 0x14FE, 0xB488, 0x167F, 0xA470, 0x18E7, 0x84B5,
4314         0x1B6E, 0x842A, 0x1F1D, 0x852A, 0x0DA3, 0x8F7C, 0x167E, 0xF254,
4315         0x0000, 0x842A, 0x0001, 0x852A, 0x18E6, 0x8BAA, 0x1B6D, 0xF234,
4316         0x229F, 0x8429, 0x2746, 0x8529, 0x1F1C, 0x86E7, 0x229E, 0xF224,
4317
4318         0x0DA4, 0x8429, 0x2C29, 0x8529, 0x2745, 0x87F6, 0x2C28, 0xF254,
4319         0x383B, 0x8428, 0x320F, 0x8528, 0x320E, 0x8F02, 0x1341, 0xF264,
4320         0x3EB6, 0x8428, 0x3EB9, 0x8528, 0x383A, 0x8FA9, 0x3EB5, 0xF294,
4321         0x3EB7, 0x8474, 0x3EBA, 0x8575, 0x3EB8, 0xC4C3, 0x3EBB, 0xC5C3,
4322
4323         0x0000, 0xA404, 0x0001, 0xA504, 0x141F, 0x8671, 0x14FD, 0x8287,
4324         0x3EBC, 0xE610, 0x3EC8, 0x8C7B, 0x031A, 0x87E6, 0x3EC8, 0x86F7,
4325         0x3EC0, 0x821E, 0x3EBE, 0xD208, 0x3EBD, 0x821F, 0x3ECA, 0x8386,
4326         0x3EC1, 0x8C03, 0x3EC9, 0x831E, 0x3ECA, 0x8C4C, 0x3EBF, 0x8C55,
4327
4328         0x3EC9, 0xC208, 0x3EC4, 0xBC84, 0x3EC8, 0x8EAD, 0x3EC8, 0xD308,
4329         0x3EC2, 0x8F7E, 0x3ECB, 0x8219, 0x3ECB, 0xD26E, 0x3EC5, 0x831F,
4330         0x3EC6, 0xC308, 0x3EC3, 0xB2FF, 0x3EC9, 0x8265, 0x3EC9, 0x8319,
4331         0x1342, 0xD36E, 0x3EC7, 0xB3FF, 0x0000, 0x8365, 0x1420, 0x9570,
4332 };
4333
4334 static unsigned short init4[128] = {
4335         0x0C10, 0x8470, 0x14FE, 0xB488, 0x167F, 0xA470, 0x18E7, 0x84B5,
4336         0x1B6E, 0x842A, 0x1F1D, 0x852A, 0x0DA3, 0x0F7C, 0x167E, 0x7254,
4337         0x0000, 0x842A, 0x0001, 0x852A, 0x18E6, 0x0BAA, 0x1B6D, 0x7234,
4338         0x229F, 0x8429, 0x2746, 0x8529, 0x1F1C, 0x06E7, 0x229E, 0x7224,
4339
4340         0x0DA4, 0x8429, 0x2C29, 0x8529, 0x2745, 0x07F6, 0x2C28, 0x7254,
4341         0x383B, 0x8428, 0x320F, 0x8528, 0x320E, 0x0F02, 0x1341, 0x7264,
4342         0x3EB6, 0x8428, 0x3EB9, 0x8528, 0x383A, 0x0FA9, 0x3EB5, 0x7294,
4343         0x3EB7, 0x8474, 0x3EBA, 0x8575, 0x3EB8, 0x44C3, 0x3EBB, 0x45C3,
4344
4345         0x0000, 0xA404, 0x0001, 0xA504, 0x141F, 0x0671, 0x14FD, 0x0287,
4346         0x3EBC, 0xE610, 0x3EC8, 0x0C7B, 0x031A, 0x07E6, 0x3EC8, 0x86F7,
4347         0x3EC0, 0x821E, 0x3EBE, 0xD208, 0x3EBD, 0x021F, 0x3ECA, 0x0386,
4348         0x3EC1, 0x0C03, 0x3EC9, 0x031E, 0x3ECA, 0x8C4C, 0x3EBF, 0x0C55,
4349
4350         0x3EC9, 0xC208, 0x3EC4, 0xBC84, 0x3EC8, 0x0EAD, 0x3EC8, 0xD308,
4351         0x3EC2, 0x8F7E, 0x3ECB, 0x0219, 0x3ECB, 0xD26E, 0x3EC5, 0x031F,
4352         0x3EC6, 0xC308, 0x3EC3, 0x32FF, 0x3EC9, 0x0265, 0x3EC9, 0x8319,
4353         0x1342, 0xD36E, 0x3EC7, 0x33FF, 0x0000, 0x8365, 0x1420, 0x9570,
4354 };
4355
4356
4357 /* send initialization arrays to start up */
4358 static void
4359 awe_init_array(void)
4360 {
4361         awe_send_array(init1);
4362         awe_wait(1024);
4363         awe_send_array(init2);
4364         awe_send_array(init3);
4365         awe_poke_dw(AWE_HWCF4, 0);
4366         awe_poke_dw(AWE_HWCF5, 0x83);
4367         awe_poke_dw(AWE_HWCF6, 0x8000);
4368         awe_send_array(init4);
4369 }
4370
4371 /* send an initialization array */
4372 static void
4373 awe_send_array(unsigned short *data)
4374 {
4375         int i;
4376         unsigned short *p;
4377
4378         p = data;
4379         for (i = 0; i < AWE_MAX_VOICES; i++, p++)
4380                 awe_poke(AWE_INIT1(i), *p);
4381         for (i = 0; i < AWE_MAX_VOICES; i++, p++)
4382                 awe_poke(AWE_INIT2(i), *p);
4383         for (i = 0; i < AWE_MAX_VOICES; i++, p++)
4384                 awe_poke(AWE_INIT3(i), *p);
4385         for (i = 0; i < AWE_MAX_VOICES; i++, p++)
4386                 awe_poke(AWE_INIT4(i), *p);
4387 }
4388
4389
4390 /*
4391  * set up awe32 channels to some known state.
4392  */
4393
4394 /* set the envelope & LFO parameters to the default values; see ADIP */
4395 static void
4396 awe_tweak_voice(int i)
4397 {
4398         /* set all mod/vol envelope shape to minimum */
4399         awe_poke(AWE_ENVVOL(i), 0x8000);
4400         awe_poke(AWE_ENVVAL(i), 0x8000);
4401         awe_poke(AWE_DCYSUS(i), 0x7F7F);
4402         awe_poke(AWE_ATKHLDV(i), 0x7F7F);
4403         awe_poke(AWE_ATKHLD(i), 0x7F7F);
4404         awe_poke(AWE_PEFE(i), 0);  /* mod envelope height to zero */
4405         awe_poke(AWE_LFO1VAL(i), 0x8000); /* no delay for LFO1 */
4406         awe_poke(AWE_LFO2VAL(i), 0x8000);
4407         awe_poke(AWE_IP(i), 0xE000);    /* no pitch shift */
4408         awe_poke(AWE_IFATN(i), 0xFF00); /* volume to minimum */
4409         awe_poke(AWE_FMMOD(i), 0);
4410         awe_poke(AWE_TREMFRQ(i), 0);
4411         awe_poke(AWE_FM2FRQ2(i), 0);
4412 }
4413
4414 static void
4415 awe_tweak(void)
4416 {
4417         int i;
4418         /* reset all channels */
4419         for (i = 0; i < awe_max_voices; i++)
4420                 awe_tweak_voice(i);
4421 }
4422
4423
4424 /*
4425  *  initializes the FM section of AWE32;
4426  *   see Vince Vu's unofficial AWE32 programming guide
4427  */
4428
4429 static void
4430 awe_init_fm(void)
4431 {
4432 #ifndef AWE_ALWAYS_INIT_FM
4433         /* if no extended memory is on board.. */
4434         if (memsize <= 0)
4435                 return;
4436 #endif
4437         DEBUG(3,printk("AWE32: initializing FM\n"));
4438
4439         /* Initialize the last two channels for DRAM refresh and producing
4440            the reverb and chorus effects for Yamaha OPL-3 synthesizer */
4441
4442         /* 31: FM left channel, 0xffffe0-0xffffe8 */
4443         awe_poke(AWE_DCYSUSV(30), 0x80);
4444         awe_poke_dw(AWE_PSST(30), 0xFFFFFFE0); /* full left */
4445         awe_poke_dw(AWE_CSL(30), 0x00FFFFE8 |
4446                     (DEF_FM_CHORUS_DEPTH << 24));
4447         awe_poke_dw(AWE_PTRX(30), (DEF_FM_REVERB_DEPTH << 8));
4448         awe_poke_dw(AWE_CPF(30), 0);
4449         awe_poke_dw(AWE_CCCA(30), 0x00FFFFE3);
4450
4451         /* 32: FM right channel, 0xfffff0-0xfffff8 */
4452         awe_poke(AWE_DCYSUSV(31), 0x80);
4453         awe_poke_dw(AWE_PSST(31), 0x00FFFFF0); /* full right */
4454         awe_poke_dw(AWE_CSL(31), 0x00FFFFF8 |
4455                     (DEF_FM_CHORUS_DEPTH << 24));
4456         awe_poke_dw(AWE_PTRX(31), (DEF_FM_REVERB_DEPTH << 8));
4457         awe_poke_dw(AWE_CPF(31), 0x8000);
4458         awe_poke_dw(AWE_CCCA(31), 0x00FFFFF3);
4459
4460         /* skew volume & cutoff */
4461         awe_poke_dw(AWE_VTFT(30), 0x8000FFFF);
4462         awe_poke_dw(AWE_VTFT(31), 0x8000FFFF);
4463
4464         voices[30].state = AWE_ST_FM;
4465         voices[31].state = AWE_ST_FM;
4466
4467         /* change maximum channels to 30 */
4468         awe_max_voices = AWE_NORMAL_VOICES;
4469         if (playing_mode == AWE_PLAY_DIRECT)
4470                 awe_info.nr_voices = awe_max_voices;
4471         else
4472                 awe_info.nr_voices = AWE_MAX_CHANNELS;
4473         voice_alloc->max_voice = awe_max_voices;
4474 }
4475
4476 /*
4477  *  AWE32 DRAM access routines
4478  */
4479
4480 /* open DRAM write accessing mode */
4481 static int
4482 awe_open_dram_for_write(int offset, int channels)
4483 {
4484         int vidx[AWE_NORMAL_VOICES];
4485         int i;
4486
4487         if (channels < 0 || channels >= AWE_NORMAL_VOICES) {
4488                 channels = AWE_NORMAL_VOICES;
4489                 for (i = 0; i < AWE_NORMAL_VOICES; i++)
4490                         vidx[i] = i;
4491         } else {
4492                 for (i = 0; i < channels; i++) {
4493                         vidx[i] = awe_clear_voice();
4494                         voices[vidx[i]].state = AWE_ST_MARK;
4495                 }
4496         }
4497
4498         /* use all channels for DMA transfer */
4499         for (i = 0; i < channels; i++) {
4500                 if (vidx[i] < 0) continue;
4501                 awe_poke(AWE_DCYSUSV(vidx[i]), 0x80);
4502                 awe_poke_dw(AWE_VTFT(vidx[i]), 0);
4503                 awe_poke_dw(AWE_CVCF(vidx[i]), 0);
4504                 awe_poke_dw(AWE_PTRX(vidx[i]), 0x40000000);
4505                 awe_poke_dw(AWE_CPF(vidx[i]), 0x40000000);
4506                 awe_poke_dw(AWE_PSST(vidx[i]), 0);
4507                 awe_poke_dw(AWE_CSL(vidx[i]), 0);
4508                 awe_poke_dw(AWE_CCCA(vidx[i]), 0x06000000);
4509                 voices[vidx[i]].state = AWE_ST_DRAM;
4510         }
4511         /* point channels 31 & 32 to ROM samples for DRAM refresh */
4512         awe_poke_dw(AWE_VTFT(30), 0);
4513         awe_poke_dw(AWE_PSST(30), 0x1d8);
4514         awe_poke_dw(AWE_CSL(30), 0x1e0);
4515         awe_poke_dw(AWE_CCCA(30), 0x1d8);
4516         awe_poke_dw(AWE_VTFT(31), 0);
4517         awe_poke_dw(AWE_PSST(31), 0x1d8);
4518         awe_poke_dw(AWE_CSL(31), 0x1e0);
4519         awe_poke_dw(AWE_CCCA(31), 0x1d8);
4520         voices[30].state = AWE_ST_FM;
4521         voices[31].state = AWE_ST_FM;
4522
4523         /* if full bit is on, not ready to write on */
4524         if (awe_peek_dw(AWE_SMALW) & 0x80000000) {
4525                 for (i = 0; i < channels; i++) {
4526                         awe_poke_dw(AWE_CCCA(vidx[i]), 0);
4527                         voices[vidx[i]].state = AWE_ST_OFF;
4528                 }
4529                 printk("awe: not ready to write..\n");
4530                 return -EPERM;
4531         }
4532
4533         /* set address to write */
4534         awe_poke_dw(AWE_SMALW, offset);
4535
4536         return 0;
4537 }
4538
4539 /* open DRAM for RAM size detection */
4540 static void
4541 awe_open_dram_for_check(void)
4542 {
4543         int i;
4544         for (i = 0; i < AWE_NORMAL_VOICES; i++) {
4545                 awe_poke(AWE_DCYSUSV(i), 0x80);
4546                 awe_poke_dw(AWE_VTFT(i), 0);
4547                 awe_poke_dw(AWE_CVCF(i), 0);
4548                 awe_poke_dw(AWE_PTRX(i), 0x40000000);
4549                 awe_poke_dw(AWE_CPF(i), 0x40000000);
4550                 awe_poke_dw(AWE_PSST(i), 0);
4551                 awe_poke_dw(AWE_CSL(i), 0);
4552                 if (i & 1) /* DMA write */
4553                         awe_poke_dw(AWE_CCCA(i), 0x06000000);
4554                 else       /* DMA read */
4555                         awe_poke_dw(AWE_CCCA(i), 0x04000000);
4556                 voices[i].state = AWE_ST_DRAM;
4557         }
4558 }
4559
4560
4561 /* close dram access */
4562 static void
4563 awe_close_dram(void)
4564 {
4565         int i;
4566         /* wait until FULL bit in SMAxW register be false */
4567         for (i = 0; i < 10000; i++) {
4568                 if (!(awe_peek_dw(AWE_SMALW) & 0x80000000))
4569                         break;
4570                 awe_wait(10);
4571         }
4572
4573         for (i = 0; i < AWE_NORMAL_VOICES; i++) {
4574                 if (voices[i].state == AWE_ST_DRAM) {
4575                         awe_poke_dw(AWE_CCCA(i), 0);
4576                         awe_poke(AWE_DCYSUSV(i), 0x807F);
4577                         voices[i].state = AWE_ST_OFF;
4578                 }
4579         }
4580 }
4581
4582
4583 /*
4584  * check dram size on AWE board
4585  */
4586
4587 /* any three numbers you like */
4588 #define UNIQUE_ID1      0x1234
4589 #define UNIQUE_ID2      0x4321
4590 #define UNIQUE_ID3      0xABCD
4591
4592 static void __init
4593 awe_check_dram(void)
4594 {
4595         if (awe_present) /* already initialized */
4596                 return;
4597
4598         if (memsize >= 0) { /* given by config file or module option */
4599                 memsize *= 1024; /* convert to Kbytes */
4600                 return;
4601         }
4602
4603         awe_open_dram_for_check();
4604
4605         memsize = 0;
4606
4607         /* set up unique two id numbers */
4608         awe_poke_dw(AWE_SMALW, AWE_DRAM_OFFSET);
4609         awe_poke(AWE_SMLD, UNIQUE_ID1);
4610         awe_poke(AWE_SMLD, UNIQUE_ID2);
4611
4612         while (memsize < AWE_MAX_DRAM_SIZE) {
4613                 awe_wait(5);
4614                 /* read a data on the DRAM start address */
4615                 awe_poke_dw(AWE_SMALR, AWE_DRAM_OFFSET);
4616                 awe_peek(AWE_SMLD); /* discard stale data  */
4617                 if (awe_peek(AWE_SMLD) != UNIQUE_ID1)
4618                         break;
4619                 if (awe_peek(AWE_SMLD) != UNIQUE_ID2)
4620                         break;
4621                 memsize += 512;  /* increment 512kbytes */
4622                 /* Write a unique data on the test address;
4623                  * if the address is out of range, the data is written on
4624                  * 0x200000(=AWE_DRAM_OFFSET).  Then the two id words are
4625                  * broken by this data.
4626                  */
4627                 awe_poke_dw(AWE_SMALW, AWE_DRAM_OFFSET + memsize*512L);
4628                 awe_poke(AWE_SMLD, UNIQUE_ID3);
4629                 awe_wait(5);
4630                 /* read a data on the just written DRAM address */
4631                 awe_poke_dw(AWE_SMALR, AWE_DRAM_OFFSET + memsize*512L);
4632                 awe_peek(AWE_SMLD); /* discard stale data  */
4633                 if (awe_peek(AWE_SMLD) != UNIQUE_ID3)
4634                         break;
4635         }
4636         awe_close_dram();
4637
4638         DEBUG(0,printk("AWE32: %d Kbytes memory detected\n", memsize));
4639
4640         /* convert to Kbytes */
4641         memsize *= 1024;
4642 }
4643
4644
4645 /*----------------------------------------------------------------*/
4646
4647 /*
4648  * chorus and reverb controls; from VV's guide
4649  */
4650
4651 /* 5 parameters for each chorus mode; 3 x 16bit, 2 x 32bit */
4652 static char chorus_defined[AWE_CHORUS_NUMBERS];
4653 static awe_chorus_fx_rec chorus_parm[AWE_CHORUS_NUMBERS] = {
4654         {0xE600, 0x03F6, 0xBC2C ,0x00000000, 0x0000006D}, /* chorus 1 */
4655         {0xE608, 0x031A, 0xBC6E, 0x00000000, 0x0000017C}, /* chorus 2 */
4656         {0xE610, 0x031A, 0xBC84, 0x00000000, 0x00000083}, /* chorus 3 */
4657         {0xE620, 0x0269, 0xBC6E, 0x00000000, 0x0000017C}, /* chorus 4 */
4658         {0xE680, 0x04D3, 0xBCA6, 0x00000000, 0x0000005B}, /* feedback */
4659         {0xE6E0, 0x044E, 0xBC37, 0x00000000, 0x00000026}, /* flanger */
4660         {0xE600, 0x0B06, 0xBC00, 0x0000E000, 0x00000083}, /* short delay */
4661         {0xE6C0, 0x0B06, 0xBC00, 0x0000E000, 0x00000083}, /* short delay + feedback */
4662 };
4663
4664 static int
4665 awe_load_chorus_fx(awe_patch_info *patch, const char __user *addr, int count)
4666 {
4667         if (patch->optarg < AWE_CHORUS_PREDEFINED || patch->optarg >= AWE_CHORUS_NUMBERS) {
4668                 printk(KERN_WARNING "AWE32 Error: invalid chorus mode %d for uploading\n", patch->optarg);
4669                 return -EINVAL;
4670         }
4671         if (count < sizeof(awe_chorus_fx_rec)) {
4672                 printk(KERN_WARNING "AWE32 Error: too short chorus fx parameters\n");
4673                 return -EINVAL;
4674         }
4675         if (copy_from_user(&chorus_parm[patch->optarg], addr + AWE_PATCH_INFO_SIZE,
4676                            sizeof(awe_chorus_fx_rec)))
4677                 return -EFAULT;
4678         chorus_defined[patch->optarg] = TRUE;
4679         return 0;
4680 }
4681
4682 static void
4683 awe_set_chorus_mode(int effect)
4684 {
4685         if (effect < 0 || effect >= AWE_CHORUS_NUMBERS ||
4686             (effect >= AWE_CHORUS_PREDEFINED && !chorus_defined[effect]))
4687                 return;
4688         awe_poke(AWE_INIT3(9), chorus_parm[effect].feedback);
4689         awe_poke(AWE_INIT3(12), chorus_parm[effect].delay_offset);
4690         awe_poke(AWE_INIT4(3), chorus_parm[effect].lfo_depth);
4691         awe_poke_dw(AWE_HWCF4, chorus_parm[effect].delay);
4692         awe_poke_dw(AWE_HWCF5, chorus_parm[effect].lfo_freq);
4693         awe_poke_dw(AWE_HWCF6, 0x8000);
4694         awe_poke_dw(AWE_HWCF7, 0x0000);
4695 }
4696
4697 static void
4698 awe_update_chorus_mode(void)
4699 {
4700         awe_set_chorus_mode(ctrls[AWE_MD_CHORUS_MODE]);
4701 }
4702
4703 /*----------------------------------------------------------------*/
4704
4705 /* reverb mode settings; write the following 28 data of 16 bit length
4706  *   on the corresponding ports in the reverb_cmds array
4707  */
4708 static char reverb_defined[AWE_CHORUS_NUMBERS];
4709 static awe_reverb_fx_rec reverb_parm[AWE_REVERB_NUMBERS] = {
4710 {{  /* room 1 */
4711         0xB488, 0xA450, 0x9550, 0x84B5, 0x383A, 0x3EB5, 0x72F4,
4712         0x72A4, 0x7254, 0x7204, 0x7204, 0x7204, 0x4416, 0x4516,
4713         0xA490, 0xA590, 0x842A, 0x852A, 0x842A, 0x852A, 0x8429,
4714         0x8529, 0x8429, 0x8529, 0x8428, 0x8528, 0x8428, 0x8528,
4715 }},
4716 {{  /* room 2 */
4717         0xB488, 0xA458, 0x9558, 0x84B5, 0x383A, 0x3EB5, 0x7284,
4718         0x7254, 0x7224, 0x7224, 0x7254, 0x7284, 0x4448, 0x4548,
4719         0xA440, 0xA540, 0x842A, 0x852A, 0x842A, 0x852A, 0x8429,
4720         0x8529, 0x8429, 0x8529, 0x8428, 0x8528, 0x8428, 0x8528,
4721 }},
4722 {{  /* room 3 */
4723         0xB488, 0xA460, 0x9560, 0x84B5, 0x383A, 0x3EB5, 0x7284,
4724         0x7254, 0x7224, 0x7224, 0x7254, 0x7284, 0x4416, 0x4516,
4725         0xA490, 0xA590, 0x842C, 0x852C, 0x842C, 0x852C, 0x842B,
4726         0x852B, 0x842B, 0x852B, 0x842A, 0x852A, 0x842A, 0x852A,
4727 }},
4728 {{  /* hall 1 */
4729         0xB488, 0xA470, 0x9570, 0x84B5, 0x383A, 0x3EB5, 0x7284,
4730         0x7254, 0x7224, 0x7224, 0x7254, 0x7284, 0x4448, 0x4548,
4731         0xA440, 0xA540, 0x842B, 0x852B, 0x842B, 0x852B, 0x842A,
4732         0x852A, 0x842A, 0x852A, 0x8429, 0x8529, 0x8429, 0x8529,
4733 }},
4734 {{  /* hall 2 */
4735         0xB488, 0xA470, 0x9570, 0x84B5, 0x383A, 0x3EB5, 0x7254,
4736         0x7234, 0x7224, 0x7254, 0x7264, 0x7294, 0x44C3, 0x45C3,
4737         0xA404, 0xA504, 0x842A, 0x852A, 0x842A, 0x852A, 0x8429,
4738         0x8529, 0x8429, 0x8529, 0x8428, 0x8528, 0x8428, 0x8528,
4739 }},
4740 {{  /* plate */
4741         0xB4FF, 0xA470, 0x9570, 0x84B5, 0x383A, 0x3EB5, 0x7234,
4742         0x7234, 0x7234, 0x7234, 0x7234, 0x7234, 0x4448, 0x4548,
4743         0xA440, 0xA540, 0x842A, 0x852A, 0x842A, 0x852A, 0x8429,
4744         0x8529, 0x8429, 0x8529, 0x8428, 0x8528, 0x8428, 0x8528,
4745 }},
4746 {{  /* delay */
4747         0xB4FF, 0xA470, 0x9500, 0x84B5, 0x333A, 0x39B5, 0x7204,
4748         0x7204, 0x7204, 0x7204, 0x7204, 0x72F4, 0x4400, 0x4500,
4749         0xA4FF, 0xA5FF, 0x8420, 0x8520, 0x8420, 0x8520, 0x8420,
4750         0x8520, 0x8420, 0x8520, 0x8420, 0x8520, 0x8420, 0x8520,
4751 }},
4752 {{  /* panning delay */
4753         0xB4FF, 0xA490, 0x9590, 0x8474, 0x333A, 0x39B5, 0x7204,
4754         0x7204, 0x7204, 0x7204, 0x7204, 0x72F4, 0x4400, 0x4500,
4755         0xA4FF, 0xA5FF, 0x8420, 0x8520, 0x8420, 0x8520, 0x8420,
4756         0x8520, 0x8420, 0x8520, 0x8420, 0x8520, 0x8420, 0x8520,
4757 }},
4758 };
4759
4760 static struct ReverbCmdPair {
4761         unsigned short cmd, port;
4762 } reverb_cmds[28] = {
4763   {AWE_INIT1(0x03)}, {AWE_INIT1(0x05)}, {AWE_INIT4(0x1F)}, {AWE_INIT1(0x07)},
4764   {AWE_INIT2(0x14)}, {AWE_INIT2(0x16)}, {AWE_INIT1(0x0F)}, {AWE_INIT1(0x17)},
4765   {AWE_INIT1(0x1F)}, {AWE_INIT2(0x07)}, {AWE_INIT2(0x0F)}, {AWE_INIT2(0x17)},
4766   {AWE_INIT2(0x1D)}, {AWE_INIT2(0x1F)}, {AWE_INIT3(0x01)}, {AWE_INIT3(0x03)},
4767   {AWE_INIT1(0x09)}, {AWE_INIT1(0x0B)}, {AWE_INIT1(0x11)}, {AWE_INIT1(0x13)},
4768   {AWE_INIT1(0x19)}, {AWE_INIT1(0x1B)}, {AWE_INIT2(0x01)}, {AWE_INIT2(0x03)},
4769   {AWE_INIT2(0x09)}, {AWE_INIT2(0x0B)}, {AWE_INIT2(0x11)}, {AWE_INIT2(0x13)},
4770 };
4771
4772 static int
4773 awe_load_reverb_fx(awe_patch_info *patch, const char __user *addr, int count)
4774 {
4775         if (patch->optarg < AWE_REVERB_PREDEFINED || patch->optarg >= AWE_REVERB_NUMBERS) {
4776                 printk(KERN_WARNING "AWE32 Error: invalid reverb mode %d for uploading\n", patch->optarg);
4777                 return -EINVAL;
4778         }
4779         if (count < sizeof(awe_reverb_fx_rec)) {
4780                 printk(KERN_WARNING "AWE32 Error: too short reverb fx parameters\n");
4781                 return -EINVAL;
4782         }
4783         if (copy_from_user(&reverb_parm[patch->optarg], addr + AWE_PATCH_INFO_SIZE,
4784                            sizeof(awe_reverb_fx_rec)))
4785                 return -EFAULT;
4786         reverb_defined[patch->optarg] = TRUE;
4787         return 0;
4788 }
4789
4790 static void
4791 awe_set_reverb_mode(int effect)
4792 {
4793         int i;
4794         if (effect < 0 || effect >= AWE_REVERB_NUMBERS ||
4795             (effect >= AWE_REVERB_PREDEFINED && !reverb_defined[effect]))
4796                 return;
4797         for (i = 0; i < 28; i++)
4798                 awe_poke(reverb_cmds[i].cmd, reverb_cmds[i].port,
4799                          reverb_parm[effect].parms[i]);
4800 }
4801
4802 static void
4803 awe_update_reverb_mode(void)
4804 {
4805         awe_set_reverb_mode(ctrls[AWE_MD_REVERB_MODE]);
4806 }
4807
4808 /*
4809  * treble/bass equalizer control
4810  */
4811
4812 static unsigned short bass_parm[12][3] = {
4813         {0xD26A, 0xD36A, 0x0000}, /* -12 dB */
4814         {0xD25B, 0xD35B, 0x0000}, /*  -8 */
4815         {0xD24C, 0xD34C, 0x0000}, /*  -6 */
4816         {0xD23D, 0xD33D, 0x0000}, /*  -4 */
4817         {0xD21F, 0xD31F, 0x0000}, /*  -2 */
4818         {0xC208, 0xC308, 0x0001}, /*   0 (HW default) */
4819         {0xC219, 0xC319, 0x0001}, /*  +2 */
4820         {0xC22A, 0xC32A, 0x0001}, /*  +4 */
4821         {0xC24C, 0xC34C, 0x0001}, /*  +6 */
4822         {0xC26E, 0xC36E, 0x0001}, /*  +8 */
4823         {0xC248, 0xC348, 0x0002}, /* +10 */
4824         {0xC26A, 0xC36A, 0x0002}, /* +12 dB */
4825 };
4826
4827 static unsigned short treble_parm[12][9] = {
4828         {0x821E, 0xC26A, 0x031E, 0xC36A, 0x021E, 0xD208, 0x831E, 0xD308, 0x0001}, /* -12 dB */
4829         {0x821E, 0xC25B, 0x031E, 0xC35B, 0x021E, 0xD208, 0x831E, 0xD308, 0x0001},
4830         {0x821E, 0xC24C, 0x031E, 0xC34C, 0x021E, 0xD208, 0x831E, 0xD308, 0x0001},
4831         {0x821E, 0xC23D, 0x031E, 0xC33D, 0x021E, 0xD208, 0x831E, 0xD308, 0x0001},
4832         {0x821E, 0xC21F, 0x031E, 0xC31F, 0x021E, 0xD208, 0x831E, 0xD308, 0x0001},
4833         {0x821E, 0xD208, 0x031E, 0xD308, 0x021E, 0xD208, 0x831E, 0xD308, 0x0002},
4834         {0x821E, 0xD208, 0x031E, 0xD308, 0x021D, 0xD219, 0x831D, 0xD319, 0x0002},
4835         {0x821E, 0xD208, 0x031E, 0xD308, 0x021C, 0xD22A, 0x831C, 0xD32A, 0x0002},
4836         {0x821E, 0xD208, 0x031E, 0xD308, 0x021A, 0xD24C, 0x831A, 0xD34C, 0x0002},
4837         {0x821E, 0xD208, 0x031E, 0xD308, 0x0219, 0xD26E, 0x8319, 0xD36E, 0x0002}, /* +8 (HW default) */
4838         {0x821D, 0xD219, 0x031D, 0xD319, 0x0219, 0xD26E, 0x8319, 0xD36E, 0x0002},
4839         {0x821C, 0xD22A, 0x031C, 0xD32A, 0x0219, 0xD26E, 0x8319, 0xD36E, 0x0002}, /* +12 dB */
4840 };
4841
4842
4843 /*
4844  * set Emu8000 digital equalizer; from 0 to 11 [-12dB - 12dB]
4845  */
4846 static void
4847 awe_equalizer(int bass, int treble)
4848 {
4849         unsigned short w;
4850
4851         if (bass < 0 || bass > 11 || treble < 0 || treble > 11)
4852                 return;
4853         awe_poke(AWE_INIT4(0x01), bass_parm[bass][0]);
4854         awe_poke(AWE_INIT4(0x11), bass_parm[bass][1]);
4855         awe_poke(AWE_INIT3(0x11), treble_parm[treble][0]);
4856         awe_poke(AWE_INIT3(0x13), treble_parm[treble][1]);
4857         awe_poke(AWE_INIT3(0x1B), treble_parm[treble][2]);
4858         awe_poke(AWE_INIT4(0x07), treble_parm[treble][3]);
4859         awe_poke(AWE_INIT4(0x0B), treble_parm[treble][4]);
4860         awe_poke(AWE_INIT4(0x0D), treble_parm[treble][5]);
4861         awe_poke(AWE_INIT4(0x17), treble_parm[treble][6]);
4862         awe_poke(AWE_INIT4(0x19), treble_parm[treble][7]);
4863         w = bass_parm[bass][2] + treble_parm[treble][8];
4864         awe_poke(AWE_INIT4(0x15), (unsigned short)(w + 0x0262));
4865         awe_poke(AWE_INIT4(0x1D), (unsigned short)(w + 0x8362));
4866 }
4867
4868 static void awe_update_equalizer(void)
4869 {
4870         awe_equalizer(ctrls[AWE_MD_BASS_LEVEL], ctrls[AWE_MD_TREBLE_LEVEL]);
4871 }
4872
4873
4874 /*----------------------------------------------------------------*/
4875
4876 #ifdef CONFIG_AWE32_MIDIEMU
4877
4878 /*
4879  * Emu8000 MIDI Emulation
4880  */
4881
4882 /*
4883  * midi queue record
4884  */
4885
4886 /* queue type */
4887 enum { Q_NONE, Q_VARLEN, Q_READ, Q_SYSEX, };
4888
4889 #define MAX_MIDIBUF     64
4890
4891 /* midi status */
4892 typedef struct MidiStatus {
4893         int queue;      /* queue type */
4894         int qlen;       /* queue length */
4895         int read;       /* chars read */
4896         int status;     /* current status */
4897         int chan;       /* current channel */
4898         unsigned char buf[MAX_MIDIBUF];
4899 } MidiStatus;
4900
4901 /* MIDI mode type */
4902 enum { MODE_GM, MODE_GS, MODE_XG, };
4903
4904 /* NRPN / CC -> Emu8000 parameter converter */
4905 typedef struct {
4906         int control;
4907         int awe_effect;
4908         unsigned short (*convert)(int val);
4909 } ConvTable;
4910
4911
4912 /*
4913  * prototypes
4914  */
4915
4916 static int awe_midi_open(int dev, int mode, void (*input)(int,unsigned char), void (*output)(int));
4917 static void awe_midi_close(int dev);
4918 static int awe_midi_ioctl(int dev, unsigned cmd, void __user * arg);
4919 static int awe_midi_outputc(int dev, unsigned char midi_byte);
4920
4921 static void init_midi_status(MidiStatus *st);
4922 static void clear_rpn(void);
4923 static void get_midi_char(MidiStatus *st, int c);
4924 /*static void queue_varlen(MidiStatus *st, int c);*/
4925 static void special_event(MidiStatus *st, int c);
4926 static void queue_read(MidiStatus *st, int c);
4927 static void midi_note_on(MidiStatus *st);
4928 static void midi_note_off(MidiStatus *st);
4929 static void midi_key_pressure(MidiStatus *st);
4930 static void midi_channel_pressure(MidiStatus *st);
4931 static void midi_pitch_wheel(MidiStatus *st);
4932 static void midi_program_change(MidiStatus *st);
4933 static void midi_control_change(MidiStatus *st);
4934 static void midi_select_bank(MidiStatus *st, int val);
4935 static void midi_nrpn_event(MidiStatus *st);
4936 static void midi_rpn_event(MidiStatus *st);
4937 static void midi_detune(int chan, int coarse, int fine);
4938 static void midi_system_exclusive(MidiStatus *st);
4939 static int send_converted_effect(ConvTable *table, int num_tables, MidiStatus *st, int type, int val);
4940 static int add_converted_effect(ConvTable *table, int num_tables, MidiStatus *st, int type, int val);
4941 static int xg_control_change(MidiStatus *st, int cmd, int val);
4942
4943 #define numberof(ary)   (sizeof(ary)/sizeof(ary[0]))
4944
4945
4946 /*
4947  * OSS Midi device record
4948  */
4949
4950 static struct midi_operations awe_midi_operations =
4951 {
4952         .owner          = THIS_MODULE,
4953         .info           = {"AWE Midi Emu", 0, 0, SNDCARD_SB},
4954         .in_info        = {0},
4955         .open           = awe_midi_open, /*open*/
4956         .close          = awe_midi_close, /*close*/
4957         .ioctl          = awe_midi_ioctl, /*ioctl*/
4958         .outputc        = awe_midi_outputc, /*outputc*/
4959 };
4960
4961 static int my_mididev = -1;
4962
4963 static void __init attach_midiemu(void)
4964 {
4965         if ((my_mididev = sound_alloc_mididev()) < 0)
4966                 printk ("Sound: Too many midi devices detected\n");
4967         else
4968                 midi_devs[my_mididev] = &awe_midi_operations;
4969 }
4970
4971 static void unload_midiemu(void)
4972 {
4973         if (my_mididev >= 0)
4974                 sound_unload_mididev(my_mididev);
4975 }
4976
4977
4978 /*
4979  * open/close midi device
4980  */
4981
4982 static int midi_opened = FALSE;
4983
4984 static int midi_mode;
4985 static int coarsetune, finetune;
4986
4987 static int xg_mapping = TRUE;
4988 static int xg_bankmode;
4989
4990 /* effect sensitivity */
4991
4992 #define FX_CUTOFF       0
4993 #define FX_RESONANCE    1
4994 #define FX_ATTACK       2
4995 #define FX_RELEASE      3
4996 #define FX_VIBRATE      4
4997 #define FX_VIBDEPTH     5
4998 #define FX_VIBDELAY     6
4999 #define FX_NUMS         7
5000
5001 #define DEF_FX_CUTOFF           170
5002 #define DEF_FX_RESONANCE        6
5003 #define DEF_FX_ATTACK           50
5004 #define DEF_FX_RELEASE          50
5005 #define DEF_FX_VIBRATE          30
5006 #define DEF_FX_VIBDEPTH         4
5007 #define DEF_FX_VIBDELAY         1500
5008
5009 /* effect sense: */
5010 static int gs_sense[] =
5011 {
5012         DEF_FX_CUTOFF, DEF_FX_RESONANCE, DEF_FX_ATTACK, DEF_FX_RELEASE,
5013         DEF_FX_VIBRATE, DEF_FX_VIBDEPTH, DEF_FX_VIBDELAY
5014 };
5015 static int xg_sense[] =
5016 {
5017         DEF_FX_CUTOFF, DEF_FX_RESONANCE, DEF_FX_ATTACK, DEF_FX_RELEASE,
5018         DEF_FX_VIBRATE, DEF_FX_VIBDEPTH, DEF_FX_VIBDELAY
5019 };
5020
5021
5022 /* current status */
5023 static MidiStatus curst;
5024
5025
5026 static int
5027 awe_midi_open (int dev, int mode,
5028                void (*input)(int,unsigned char),
5029                void (*output)(int))
5030 {
5031         if (midi_opened)
5032                 return -EBUSY;
5033
5034         midi_opened = TRUE;
5035
5036         midi_mode = MODE_GM;
5037
5038         curst.queue = Q_NONE;
5039         curst.qlen = 0;
5040         curst.read = 0;
5041         curst.status = 0;
5042         curst.chan = 0;
5043         memset(curst.buf, 0, sizeof(curst.buf));
5044
5045         init_midi_status(&curst);
5046
5047         return 0;
5048 }
5049
5050 static void
5051 awe_midi_close (int dev)
5052 {
5053         midi_opened = FALSE;
5054 }
5055
5056
5057 static int
5058 awe_midi_ioctl (int dev, unsigned cmd, void __user *arg)
5059 {
5060         return -EPERM;
5061 }
5062
5063 static int
5064 awe_midi_outputc (int dev, unsigned char midi_byte)
5065 {
5066         if (! midi_opened)
5067                 return 1;
5068
5069         /* force to change playing mode */
5070         playing_mode = AWE_PLAY_MULTI;
5071
5072         get_midi_char(&curst, midi_byte);
5073         return 1;
5074 }
5075
5076
5077 /*
5078  * initialize
5079  */
5080
5081 static void init_midi_status(MidiStatus *st)
5082 {
5083         clear_rpn();
5084         coarsetune = 0;
5085         finetune = 0;
5086 }
5087
5088
5089 /*
5090  * RPN & NRPN
5091  */
5092
5093 #define MAX_MIDI_CHANNELS       16
5094
5095 /* RPN & NRPN */
5096 static unsigned char nrpn[MAX_MIDI_CHANNELS];  /* current event is NRPN? */
5097 static int msb_bit;  /* current event is msb for RPN/NRPN */
5098 /* RPN & NRPN indeces */
5099 static unsigned char rpn_msb[MAX_MIDI_CHANNELS], rpn_lsb[MAX_MIDI_CHANNELS];
5100 /* RPN & NRPN values */
5101 static int rpn_val[MAX_MIDI_CHANNELS];
5102
5103 static void clear_rpn(void)
5104 {
5105         int i;
5106         for (i = 0; i < MAX_MIDI_CHANNELS; i++) {
5107                 nrpn[i] = 0;
5108                 rpn_msb[i] = 127;
5109                 rpn_lsb[i] = 127;
5110                 rpn_val[i] = 0;
5111         }
5112         msb_bit = 0;
5113 }
5114
5115
5116 /*
5117  * process midi queue
5118  */
5119
5120 /* status event types */
5121 typedef void (*StatusEvent)(MidiStatus *st);
5122 static struct StatusEventList {
5123         StatusEvent process;
5124         int qlen;
5125 } status_event[8] = {
5126         {midi_note_off, 2},
5127         {midi_note_on, 2},
5128         {midi_key_pressure, 2},
5129         {midi_control_change, 2},
5130         {midi_program_change, 1},
5131         {midi_channel_pressure, 1},
5132         {midi_pitch_wheel, 2},
5133         {NULL, 0},
5134 };
5135
5136
5137 /* read a char from fifo and process it */
5138 static void get_midi_char(MidiStatus *st, int c)
5139 {
5140         if (c == 0xfe) {
5141                 /* ignore active sense */
5142                 st->queue = Q_NONE;
5143                 return;
5144         }
5145
5146         switch (st->queue) {
5147         /* case Q_VARLEN: queue_varlen(st, c); break;*/
5148         case Q_READ:
5149         case Q_SYSEX:
5150                 queue_read(st, c);
5151                 break;
5152         case Q_NONE:
5153                 st->read = 0;
5154                 if ((c & 0xf0) == 0xf0) {
5155                         special_event(st, c);
5156                 } else if (c & 0x80) { /* status change */
5157                         st->status = (c >> 4) & 0x07;
5158                         st->chan = c & 0x0f;
5159                         st->queue = Q_READ;
5160                         st->qlen = status_event[st->status].qlen;
5161                         if (st->qlen == 0)
5162                                 st->queue = Q_NONE;
5163                 }
5164                 break;
5165         }
5166 }
5167
5168 /* 0xfx events */
5169 static void special_event(MidiStatus *st, int c)
5170 {
5171         switch (c) {
5172         case 0xf0: /* system exclusive */
5173                 st->queue = Q_SYSEX;
5174                 st->qlen = 0;
5175                 break;
5176         case 0xf1: /* MTC quarter frame */
5177         case 0xf3: /* song select */
5178                 st->queue = Q_READ;
5179                 st->qlen = 1;
5180                 break;
5181         case 0xf2: /* song position */
5182                 st->queue = Q_READ;
5183                 st->qlen = 2;
5184                 break;
5185         }
5186 }
5187
5188 #if 0
5189 /* read variable length value */
5190 static void queue_varlen(MidiStatus *st, int c)
5191 {
5192         st->qlen += (c & 0x7f);
5193         if (c & 0x80) {
5194                 st->qlen <<= 7;
5195                 return;
5196         }
5197         if (st->qlen <= 0) {
5198                 st->qlen = 0;
5199                 st->queue = Q_NONE;
5200         }
5201         st->queue = Q_READ;
5202         st->read = 0;
5203 }
5204 #endif
5205
5206
5207 /* read a char */
5208 static void queue_read(MidiStatus *st, int c)
5209 {
5210         if (st->read < MAX_MIDIBUF) {
5211                 if (st->queue != Q_SYSEX)
5212                         c &= 0x7f;
5213                 st->buf[st->read] = (unsigned char)c;
5214         }
5215         st->read++;
5216         if (st->queue == Q_SYSEX && c == 0xf7) {
5217                 midi_system_exclusive(st);
5218                 st->queue = Q_NONE;
5219         } else if (st->queue == Q_READ && st->read >= st->qlen) {
5220                 if (status_event[st->status].process)
5221                         status_event[st->status].process(st);
5222                 st->queue = Q_NONE;
5223         }
5224 }
5225
5226
5227 /*
5228  * status events
5229  */
5230
5231 /* note on */
5232 static void midi_note_on(MidiStatus *st)
5233 {
5234         DEBUG(2,printk("midi: note_on (%d) %d %d\n", st->chan, st->buf[0], st->buf[1]));
5235         if (st->buf[1] == 0)
5236                 midi_note_off(st);
5237         else
5238                 awe_start_note(0, st->chan, st->buf[0], st->buf[1]);
5239 }
5240
5241 /* note off */
5242 static void midi_note_off(MidiStatus *st)
5243 {
5244         DEBUG(2,printk("midi: note_off (%d) %d %d\n", st->chan, st->buf[0], st->buf[1]));
5245         awe_kill_note(0, st->chan, st->buf[0], st->buf[1]);
5246 }
5247
5248 /* key pressure change */
5249 static void midi_key_pressure(MidiStatus *st)
5250 {
5251         awe_key_pressure(0, st->chan, st->buf[0], st->buf[1]);
5252 }
5253
5254 /* channel pressure change */
5255 static void midi_channel_pressure(MidiStatus *st)
5256 {
5257         channels[st->chan].chan_press = st->buf[0];
5258         awe_modwheel_change(st->chan, st->buf[0]);
5259 }
5260
5261 /* pitch wheel change */
5262 static void midi_pitch_wheel(MidiStatus *st)
5263 {
5264         int val = (int)st->buf[1] * 128 + st->buf[0];
5265         awe_bender(0, st->chan, val);
5266 }
5267
5268 /* program change */
5269 static void midi_program_change(MidiStatus *st)
5270 {
5271         int preset;
5272         preset = st->buf[0];
5273         if (midi_mode == MODE_GS && IS_DRUM_CHANNEL(st->chan) && preset == 127)
5274                 preset = 0;
5275         else if (midi_mode == MODE_XG && xg_mapping && IS_DRUM_CHANNEL(st->chan))
5276                 preset += 64;
5277
5278         awe_set_instr(0, st->chan, preset);
5279 }
5280
5281 #define send_effect(chan,type,val) awe_send_effect(chan,-1,type,val)
5282 #define add_effect(chan,type,val) awe_send_effect(chan,-1,(type)|0x80,val)
5283 #define unset_effect(chan,type) awe_send_effect(chan,-1,(type)|0x40,0)
5284
5285 /* midi control change */
5286 static void midi_control_change(MidiStatus *st)
5287 {
5288         int cmd = st->buf[0];
5289         int val = st->buf[1];
5290
5291         DEBUG(2,printk("midi: control (%d) %d %d\n", st->chan, cmd, val));
5292         if (midi_mode == MODE_XG) {
5293                 if (xg_control_change(st, cmd, val))
5294                         return;
5295         }
5296
5297         /* controls #31 - #64 are LSB of #0 - #31 */
5298         msb_bit = 1;
5299         if (cmd >= 0x20 && cmd < 0x40) {
5300                 msb_bit = 0;
5301                 cmd -= 0x20;
5302         }
5303
5304         switch (cmd) {
5305         case CTL_SOFT_PEDAL:
5306                 if (val == 127)
5307                         add_effect(st->chan, AWE_FX_CUTOFF, -160);
5308                 else
5309                         unset_effect(st->chan, AWE_FX_CUTOFF);
5310                 break;
5311
5312         case CTL_BANK_SELECT:
5313                 midi_select_bank(st, val);
5314                 break;
5315
5316         /* set RPN/NRPN parameter */
5317         case CTL_REGIST_PARM_NUM_MSB:
5318                 nrpn[st->chan]=0; rpn_msb[st->chan]=val;
5319                 break;
5320         case CTL_REGIST_PARM_NUM_LSB:
5321                 nrpn[st->chan]=0; rpn_lsb[st->chan]=val;
5322                 break;
5323         case CTL_NONREG_PARM_NUM_MSB:
5324                 nrpn[st->chan]=1; rpn_msb[st->chan]=val;
5325                 break;
5326         case CTL_NONREG_PARM_NUM_LSB:
5327                 nrpn[st->chan]=1; rpn_lsb[st->chan]=val;
5328                 break;
5329
5330         /* send RPN/NRPN entry */
5331         case CTL_DATA_ENTRY:
5332                 if (msb_bit)
5333                         rpn_val[st->chan] = val * 128;
5334                 else
5335                         rpn_val[st->chan] |= val;
5336                 if (nrpn[st->chan])
5337                         midi_nrpn_event(st);
5338                 else
5339                         midi_rpn_event(st);
5340                 break;
5341
5342         /* increase/decrease data entry */
5343         case CTL_DATA_INCREMENT:
5344                 rpn_val[st->chan]++;
5345                 midi_rpn_event(st);
5346                 break;
5347         case CTL_DATA_DECREMENT:
5348                 rpn_val[st->chan]--;
5349                 midi_rpn_event(st);
5350                 break;
5351
5352         /* default */
5353         default:
5354                 awe_controller(0, st->chan, cmd, val);
5355                 break;
5356         }
5357 }
5358
5359 /* tone bank change */
5360 static void midi_select_bank(MidiStatus *st, int val)
5361 {
5362         if (midi_mode == MODE_XG && msb_bit) {
5363                 xg_bankmode = val;
5364                 /* XG MSB value; not normal bank selection */
5365                 switch (val) {
5366                 case 127: /* remap to drum channel */
5367                         awe_controller(0, st->chan, CTL_BANK_SELECT, 128);
5368                         break;
5369                 default: /* remap to normal channel */
5370                         awe_controller(0, st->chan, CTL_BANK_SELECT, val);
5371                         break;
5372                 }
5373                 return;
5374         } else if (midi_mode == MODE_GS && !msb_bit)
5375                 /* ignore LSB bank in GS mode (used for mapping) */
5376                 return;
5377
5378         /* normal bank controls; accept both MSB and LSB */
5379         if (! IS_DRUM_CHANNEL(st->chan)) {
5380                 if (midi_mode == MODE_XG) {
5381                         if (xg_bankmode) return;
5382                         if (val == 64 || val == 126)
5383                                 val = 0;
5384                 } else if (midi_mode == MODE_GS && val == 127)
5385                         val = 0;
5386                 awe_controller(0, st->chan, CTL_BANK_SELECT, val);
5387         }
5388 }
5389
5390
5391 /*
5392  * RPN events
5393  */
5394
5395 static void midi_rpn_event(MidiStatus *st)
5396 {
5397         int type;
5398         type = (rpn_msb[st->chan]<<8) | rpn_lsb[st->chan];
5399         switch (type) {
5400         case 0x0000: /* Pitch bend sensitivity */
5401                 /* MSB only / 1 semitone per 128 */
5402                 if (msb_bit) {
5403                         channels[st->chan].bender_range =
5404                                 rpn_val[st->chan] * 100 / 128;
5405                 }
5406                 break;
5407
5408         case 0x0001: /* fine tuning: */
5409                 /* MSB/LSB, 8192=center, 100/8192 cent step */
5410                 finetune = rpn_val[st->chan] - 8192;
5411                 midi_detune(st->chan, coarsetune, finetune);
5412                 break;
5413
5414         case 0x0002: /* coarse tuning */
5415                 /* MSB only / 8192=center, 1 semitone per 128 */
5416                 if (msb_bit) {
5417                         coarsetune = rpn_val[st->chan] - 8192;
5418                         midi_detune(st->chan, coarsetune, finetune);
5419                 }
5420                 break;
5421
5422         case 0x7F7F: /* "lock-in" RPN */
5423                 break;
5424         }
5425 }
5426
5427
5428 /* tuning:
5429  *   coarse = -8192 to 8192 (100 cent per 128)
5430  *   fine = -8192 to 8192 (max=100cent)
5431  */
5432 static void midi_detune(int chan, int coarse, int fine)
5433 {
5434         /* 4096 = 1200 cents in AWE parameter */
5435         int val;
5436         val = coarse * 4096 / (12 * 128);
5437         val += fine / 24;
5438         if (val)
5439                 send_effect(chan, AWE_FX_INIT_PITCH, val);
5440         else
5441                 unset_effect(chan, AWE_FX_INIT_PITCH);
5442 }
5443
5444
5445 /*
5446  * system exclusive message
5447  * GM/GS/XG macros are accepted
5448  */
5449
5450 static void midi_system_exclusive(MidiStatus *st)
5451 {
5452         /* GM on */
5453         static unsigned char gm_on_macro[] = {
5454                 0x7e,0x7f,0x09,0x01,
5455         };
5456         /* XG on */
5457         static unsigned char xg_on_macro[] = {
5458                 0x43,0x10,0x4c,0x00,0x00,0x7e,0x00,
5459         };
5460         /* GS prefix
5461          * drum channel: XX=0x1?(channel), YY=0x15, ZZ=on/off
5462          * reverb mode: XX=0x01, YY=0x30, ZZ=0-7
5463          * chorus mode: XX=0x01, YY=0x38, ZZ=0-7
5464          */
5465         static unsigned char gs_pfx_macro[] = {
5466                 0x41,0x10,0x42,0x12,0x40,/*XX,YY,ZZ*/
5467         };
5468
5469 #if 0
5470         /* SC88 system mode set
5471          * single module mode: XX=1
5472          * double module mode: XX=0
5473          */
5474         static unsigned char gs_mode_macro[] = {
5475                 0x41,0x10,0x42,0x12,0x00,0x00,0x7F,/*ZZ*/
5476         };
5477         /* SC88 display macro: XX=01:bitmap, 00:text
5478          */
5479         static unsigned char gs_disp_macro[] = {
5480                 0x41,0x10,0x45,0x12,0x10,/*XX,00*/
5481         };
5482 #endif
5483
5484         /* GM on */
5485         if (memcmp(st->buf, gm_on_macro, sizeof(gm_on_macro)) == 0) {
5486                 if (midi_mode != MODE_GS && midi_mode != MODE_XG)
5487                         midi_mode = MODE_GM;
5488                 init_midi_status(st);
5489         }
5490
5491         /* GS macros */
5492         else if (memcmp(st->buf, gs_pfx_macro, sizeof(gs_pfx_macro)) == 0) {
5493                 if (midi_mode != MODE_GS && midi_mode != MODE_XG)
5494                         midi_mode = MODE_GS;
5495
5496                 if (st->buf[5] == 0x00 && st->buf[6] == 0x7f && st->buf[7] == 0x00) {
5497                         /* GS reset */
5498                         init_midi_status(st);
5499                 }
5500
5501                 else if ((st->buf[5] & 0xf0) == 0x10 && st->buf[6] == 0x15) {
5502                         /* drum pattern */
5503                         int p = st->buf[5] & 0x0f;
5504                         if (p == 0) p = 9;
5505                         else if (p < 10) p--;
5506                         if (st->buf[7] == 0)
5507                                 DRUM_CHANNEL_OFF(p);
5508                         else
5509                                 DRUM_CHANNEL_ON(p);
5510
5511                 } else if ((st->buf[5] & 0xf0) == 0x10 && st->buf[6] == 0x21) {
5512                         /* program */
5513                         int p = st->buf[5] & 0x0f;
5514                         if (p == 0) p = 9;
5515                         else if (p < 10) p--;
5516                         if (! IS_DRUM_CHANNEL(p))
5517                                 awe_set_instr(0, p, st->buf[7]);
5518
5519                 } else if (st->buf[5] == 0x01 && st->buf[6] == 0x30) {
5520                         /* reverb mode */
5521                         awe_set_reverb_mode(st->buf[7]);
5522
5523                 } else if (st->buf[5] == 0x01 && st->buf[6] == 0x38) {
5524                         /* chorus mode */
5525                         awe_set_chorus_mode(st->buf[7]);
5526
5527                 } else if (st->buf[5] == 0x00 && st->buf[6] == 0x04) {
5528                         /* master volume */
5529                         awe_change_master_volume(st->buf[7]);
5530
5531                 }
5532         }
5533
5534         /* XG on */
5535         else if (memcmp(st->buf, xg_on_macro, sizeof(xg_on_macro)) == 0) {
5536                 midi_mode = MODE_XG;
5537                 xg_mapping = TRUE;
5538                 xg_bankmode = 0;
5539         }
5540 }
5541
5542
5543 /*----------------------------------------------------------------*/
5544
5545 /*
5546  * convert NRPN/control values
5547  */
5548
5549 static int send_converted_effect(ConvTable *table, int num_tables, MidiStatus *st, int type, int val)
5550 {
5551         int i, cval;
5552         for (i = 0; i < num_tables; i++) {
5553                 if (table[i].control == type) {
5554                         cval = table[i].convert(val);
5555                         send_effect(st->chan, table[i].awe_effect, cval);
5556                         return TRUE;
5557                 }
5558         }
5559         return FALSE;
5560 }
5561
5562 static int add_converted_effect(ConvTable *table, int num_tables, MidiStatus *st, int type, int val)
5563 {
5564         int i, cval;
5565         for (i = 0; i < num_tables; i++) {
5566                 if (table[i].control == type) {
5567                         cval = table[i].convert(val);
5568                         add_effect(st->chan, table[i].awe_effect|0x80, cval);
5569                         return TRUE;
5570                 }
5571         }
5572         return FALSE;
5573 }
5574
5575
5576 /*
5577  * AWE32 NRPN effects
5578  */
5579
5580 static unsigned short fx_delay(int val);
5581 static unsigned short fx_attack(int val);
5582 static unsigned short fx_hold(int val);
5583 static unsigned short fx_decay(int val);
5584 static unsigned short fx_the_value(int val);
5585 static unsigned short fx_twice_value(int val);
5586 static unsigned short fx_conv_pitch(int val);
5587 static unsigned short fx_conv_Q(int val);
5588
5589 /* function for each NRPN */            /* [range]  units */
5590 #define fx_env1_delay   fx_delay        /* [0,5900] 4msec */
5591 #define fx_env1_attack  fx_attack       /* [0,5940] 1msec */
5592 #define fx_env1_hold    fx_hold         /* [0,8191] 1msec */
5593 #define fx_env1_decay   fx_decay        /* [0,5940] 4msec */
5594 #define fx_env1_release fx_decay        /* [0,5940] 4msec */
5595 #define fx_env1_sustain fx_the_value    /* [0,127] 0.75dB */
5596 #define fx_env1_pitch   fx_the_value    /* [-127,127] 9.375cents */
5597 #define fx_env1_cutoff  fx_the_value    /* [-127,127] 56.25cents */
5598
5599 #define fx_env2_delay   fx_delay        /* [0,5900] 4msec */
5600 #define fx_env2_attack  fx_attack       /* [0,5940] 1msec */
5601 #define fx_env2_hold    fx_hold         /* [0,8191] 1msec */
5602 #define fx_env2_decay   fx_decay        /* [0,5940] 4msec */
5603 #define fx_env2_release fx_decay        /* [0,5940] 4msec */
5604 #define fx_env2_sustain fx_the_value    /* [0,127] 0.75dB */
5605
5606 #define fx_lfo1_delay   fx_delay        /* [0,5900] 4msec */
5607 #define fx_lfo1_freq    fx_twice_value  /* [0,127] 84mHz */
5608 #define fx_lfo1_volume  fx_twice_value  /* [0,127] 0.1875dB */
5609 #define fx_lfo1_pitch   fx_the_value    /* [-127,127] 9.375cents */
5610 #define fx_lfo1_cutoff  fx_twice_value  /* [-64,63] 56.25cents */
5611
5612 #define fx_lfo2_delay   fx_delay        /* [0,5900] 4msec */
5613 #define fx_lfo2_freq    fx_twice_value  /* [0,127] 84mHz */
5614 #define fx_lfo2_pitch   fx_the_value    /* [-127,127] 9.375cents */
5615
5616 #define fx_init_pitch   fx_conv_pitch   /* [-8192,8192] cents */
5617 #define fx_chorus       fx_the_value    /* [0,255] -- */
5618 #define fx_reverb       fx_the_value    /* [0,255] -- */
5619 #define fx_cutoff       fx_twice_value  /* [0,127] 62Hz */
5620 #define fx_filterQ      fx_conv_Q       /* [0,127] -- */
5621
5622 static unsigned short fx_delay(int val)
5623 {
5624         return (unsigned short)calc_parm_delay(val);
5625 }
5626
5627 static unsigned short fx_attack(int val)
5628 {
5629         return (unsigned short)calc_parm_attack(val);
5630 }
5631
5632 static unsigned short fx_hold(int val)
5633 {
5634         return (unsigned short)calc_parm_hold(val);
5635 }
5636
5637 static unsigned short fx_decay(int val)
5638 {
5639         return (unsigned short)calc_parm_decay(val);
5640 }
5641
5642 static unsigned short fx_the_value(int val)
5643 {
5644         return (unsigned short)(val & 0xff);
5645 }
5646
5647 static unsigned short fx_twice_value(int val)
5648 {
5649         return (unsigned short)((val * 2) & 0xff);
5650 }
5651
5652 static unsigned short fx_conv_pitch(int val)
5653 {
5654         return (short)(val * 4096 / 1200);
5655 }
5656
5657 static unsigned short fx_conv_Q(int val)
5658 {
5659         return (unsigned short)((val / 8) & 0xff);
5660 }
5661
5662
5663 static ConvTable awe_effects[] =
5664 {
5665         { 0, AWE_FX_LFO1_DELAY, fx_lfo1_delay},
5666         { 1, AWE_FX_LFO1_FREQ,  fx_lfo1_freq},
5667         { 2, AWE_FX_LFO2_DELAY, fx_lfo2_delay},
5668         { 3, AWE_FX_LFO2_FREQ,  fx_lfo2_freq},
5669
5670         { 4, AWE_FX_ENV1_DELAY, fx_env1_delay},
5671         { 5, AWE_FX_ENV1_ATTACK,fx_env1_attack},
5672         { 6, AWE_FX_ENV1_HOLD,  fx_env1_hold},
5673         { 7, AWE_FX_ENV1_DECAY, fx_env1_decay},
5674         { 8, AWE_FX_ENV1_SUSTAIN,       fx_env1_sustain},
5675         { 9, AWE_FX_ENV1_RELEASE,       fx_env1_release},
5676
5677         {10, AWE_FX_ENV2_DELAY, fx_env2_delay},
5678         {11, AWE_FX_ENV2_ATTACK,        fx_env2_attack},
5679         {12, AWE_FX_ENV2_HOLD,  fx_env2_hold},
5680         {13, AWE_FX_ENV2_DECAY, fx_env2_decay},
5681         {14, AWE_FX_ENV2_SUSTAIN,       fx_env2_sustain},
5682         {15, AWE_FX_ENV2_RELEASE,       fx_env2_release},
5683
5684         {16, AWE_FX_INIT_PITCH, fx_init_pitch},
5685         {17, AWE_FX_LFO1_PITCH, fx_lfo1_pitch},
5686         {18, AWE_FX_LFO2_PITCH, fx_lfo2_pitch},
5687         {19, AWE_FX_ENV1_PITCH, fx_env1_pitch},
5688         {20, AWE_FX_LFO1_VOLUME,        fx_lfo1_volume},
5689         {21, AWE_FX_CUTOFF,             fx_cutoff},
5690         {22, AWE_FX_FILTERQ,    fx_filterQ},
5691         {23, AWE_FX_LFO1_CUTOFF,        fx_lfo1_cutoff},
5692         {24, AWE_FX_ENV1_CUTOFF,        fx_env1_cutoff},
5693         {25, AWE_FX_CHORUS,             fx_chorus},
5694         {26, AWE_FX_REVERB,             fx_reverb},
5695 };
5696
5697 static int num_awe_effects = numberof(awe_effects);
5698
5699
5700 /*
5701  * GS(SC88) NRPN effects; still experimental
5702  */
5703
5704 /* cutoff: quarter semitone step, max=255 */
5705 static unsigned short gs_cutoff(int val)
5706 {
5707         return (val - 64) * gs_sense[FX_CUTOFF] / 50;
5708 }
5709
5710 /* resonance: 0 to 15(max) */
5711 static unsigned short gs_filterQ(int val)
5712 {
5713         return (val - 64) * gs_sense[FX_RESONANCE] / 50;
5714 }
5715
5716 /* attack: */
5717 static unsigned short gs_attack(int val)
5718 {
5719         return -(val - 64) * gs_sense[FX_ATTACK] / 50;
5720 }
5721
5722 /* decay: */
5723 static unsigned short gs_decay(int val)
5724 {
5725         return -(val - 64) * gs_sense[FX_RELEASE] / 50;
5726 }
5727
5728 /* release: */
5729 static unsigned short gs_release(int val)
5730 {
5731         return -(val - 64) * gs_sense[FX_RELEASE] / 50;
5732 }
5733
5734 /* vibrato freq: 0.042Hz step, max=255 */
5735 static unsigned short gs_vib_rate(int val)
5736 {
5737         return (val - 64) * gs_sense[FX_VIBRATE] / 50;
5738 }
5739
5740 /* vibrato depth: max=127, 1 octave */
5741 static unsigned short gs_vib_depth(int val)
5742 {
5743         return (val - 64) * gs_sense[FX_VIBDEPTH] / 50;
5744 }
5745
5746 /* vibrato delay: -0.725msec step */
5747 static unsigned short gs_vib_delay(int val)
5748 {
5749         return -(val - 64) * gs_sense[FX_VIBDELAY] / 50;
5750 }
5751
5752 static ConvTable gs_effects[] =
5753 {
5754         {32, AWE_FX_CUTOFF,     gs_cutoff},
5755         {33, AWE_FX_FILTERQ,    gs_filterQ},
5756         {99, AWE_FX_ENV2_ATTACK, gs_attack},
5757         {100, AWE_FX_ENV2_DECAY, gs_decay},
5758         {102, AWE_FX_ENV2_RELEASE, gs_release},
5759         {8, AWE_FX_LFO1_FREQ, gs_vib_rate},
5760         {9, AWE_FX_LFO1_VOLUME, gs_vib_depth},
5761         {10, AWE_FX_LFO1_DELAY, gs_vib_delay},
5762 };
5763
5764 static int num_gs_effects = numberof(gs_effects);
5765
5766
5767 /*
5768  * NRPN events: accept as AWE32/SC88 specific controls
5769  */
5770
5771 static void midi_nrpn_event(MidiStatus *st)
5772 {
5773         if (rpn_msb[st->chan] == 127 && rpn_lsb[st->chan] <= 26) {
5774                 if (! msb_bit) /* both MSB/LSB necessary */
5775                         send_converted_effect(awe_effects, num_awe_effects,
5776                                               st, rpn_lsb[st->chan],
5777                                               rpn_val[st->chan] - 8192);
5778         } else if (rpn_msb[st->chan] == 1) {
5779                 if (msb_bit) /* only MSB is valid */
5780                         add_converted_effect(gs_effects, num_gs_effects,
5781                                              st, rpn_lsb[st->chan],
5782                                              rpn_val[st->chan] / 128);
5783         }
5784 }
5785
5786
5787 /*
5788  * XG control effects; still experimental
5789  */
5790
5791 /* cutoff: quarter semitone step, max=255 */
5792 static unsigned short xg_cutoff(int val)
5793 {
5794         return (val - 64) * xg_sense[FX_CUTOFF] / 64;
5795 }
5796
5797 /* resonance: 0(open) to 15(most nasal) */
5798 static unsigned short xg_filterQ(int val)
5799 {
5800         return (val - 64) * xg_sense[FX_RESONANCE] / 64;
5801 }
5802
5803 /* attack: */
5804 static unsigned short xg_attack(int val)
5805 {
5806         return -(val - 64) * xg_sense[FX_ATTACK] / 64;
5807 }
5808
5809 /* release: */
5810 static unsigned short xg_release(int val)
5811 {
5812         return -(val - 64) * xg_sense[FX_RELEASE] / 64;
5813 }
5814
5815 static ConvTable xg_effects[] =
5816 {
5817         {71, AWE_FX_CUTOFF,     xg_cutoff},
5818         {74, AWE_FX_FILTERQ,    xg_filterQ},
5819         {72, AWE_FX_ENV2_RELEASE, xg_release},
5820         {73, AWE_FX_ENV2_ATTACK, xg_attack},
5821 };
5822
5823 static int num_xg_effects = numberof(xg_effects);
5824
5825 static int xg_control_change(MidiStatus *st, int cmd, int val)
5826 {
5827         return add_converted_effect(xg_effects, num_xg_effects, st, cmd, val);
5828 }
5829
5830 #endif /* CONFIG_AWE32_MIDIEMU */
5831
5832
5833 /*----------------------------------------------------------------*/
5834
5835
5836 /*
5837  * initialization of AWE driver
5838  */
5839
5840 static void
5841 awe_initialize(void)
5842 {
5843         DEBUG(0,printk("AWE32: initializing..\n"));
5844
5845         /* initialize hardware configuration */
5846         awe_poke(AWE_HWCF1, 0x0059);
5847         awe_poke(AWE_HWCF2, 0x0020);
5848
5849         /* disable audio; this seems to reduce a clicking noise a bit.. */
5850         awe_poke(AWE_HWCF3, 0);
5851
5852         /* initialize audio channels */
5853         awe_init_audio();
5854
5855         /* initialize DMA */
5856         awe_init_dma();
5857
5858         /* initialize init array */
5859         awe_init_array();
5860
5861         /* check DRAM memory size */
5862         awe_check_dram();
5863
5864         /* initialize the FM section of the AWE32 */
5865         awe_init_fm();
5866
5867         /* set up voice envelopes */
5868         awe_tweak();
5869
5870         /* enable audio */
5871         awe_poke(AWE_HWCF3, 0x0004);
5872
5873         /* set default values */
5874         awe_init_ctrl_parms(TRUE);
5875
5876         /* set equalizer */
5877         awe_update_equalizer();
5878
5879         /* set reverb & chorus modes */
5880         awe_update_reverb_mode();
5881         awe_update_chorus_mode();
5882 }
5883
5884
5885 /*
5886  * Core Device Management Functions
5887  */
5888
5889 /* store values to i/o port array */
5890 static void setup_ports(int port1, int port2, int port3)
5891 {
5892         awe_ports[0] = port1;
5893         if (port2 == 0)
5894                 port2 = port1 + 0x400;
5895         awe_ports[1] = port2;
5896         awe_ports[2] = port2 + 2;
5897         if (port3 == 0)
5898                 port3 = port1 + 0x800;
5899         awe_ports[3] = port3;
5900         awe_ports[4] = port3 + 2;
5901
5902         port_setuped = TRUE;
5903 }
5904
5905 /*
5906  * port request
5907  *  0x620-623, 0xA20-A23, 0xE20-E23
5908  */
5909
5910 static int
5911 awe_request_region(void)
5912 {
5913         if (! port_setuped)
5914                 return 0;
5915         if (! request_region(awe_ports[0], 4, "sound driver (AWE32)"))
5916                 return 0;
5917         if (! request_region(awe_ports[1], 4, "sound driver (AWE32)"))
5918                 goto err_out;
5919         if (! request_region(awe_ports[3], 4, "sound driver (AWE32)"))
5920                 goto err_out1;
5921         return 1;
5922 err_out1:
5923         release_region(awe_ports[1], 4);
5924 err_out:
5925         release_region(awe_ports[0], 4);
5926         return 0;
5927 }
5928
5929 static void
5930 awe_release_region(void)
5931 {
5932         if (! port_setuped) return;
5933         release_region(awe_ports[0], 4);
5934         release_region(awe_ports[1], 4);
5935         release_region(awe_ports[3], 4);
5936 }
5937
5938 static int awe_attach_device(void)
5939 {
5940         if (awe_present) return 0; /* for OSS38.. called twice? */
5941
5942         /* reserve I/O ports for awedrv */
5943         if (! awe_request_region()) {
5944                 printk(KERN_ERR "AWE32: I/O area already used.\n");
5945                 return 0;
5946         }
5947
5948         /* set buffers to NULL */
5949         sfhead = sftail = NULL;
5950
5951         my_dev = sound_alloc_synthdev();
5952         if (my_dev == -1) {
5953                 printk(KERN_ERR "AWE32 Error: too many synthesizers\n");
5954                 awe_release_region();
5955                 return 0;
5956         }
5957
5958         voice_alloc = &awe_operations.alloc;
5959         voice_alloc->max_voice = awe_max_voices;
5960         synth_devs[my_dev] = &awe_operations;
5961
5962 #ifdef CONFIG_AWE32_MIXER
5963         attach_mixer();
5964 #endif
5965 #ifdef CONFIG_AWE32_MIDIEMU
5966         attach_midiemu();
5967 #endif
5968
5969         /* clear all samples */
5970         awe_reset_samples();
5971
5972         /* initialize AWE32 hardware */
5973         awe_initialize();
5974
5975         sprintf(awe_info.name, "AWE32-%s (RAM%dk)",
5976                 AWEDRV_VERSION, memsize/1024);
5977         printk(KERN_INFO "<SoundBlaster EMU8000 (RAM%dk)>\n", memsize/1024);
5978
5979         awe_present = TRUE;
5980
5981         return 1;
5982 }
5983
5984 static void awe_dettach_device(void)
5985 {
5986         if (awe_present) {
5987                 awe_reset_samples();
5988                 awe_release_region();
5989                 free_tables();
5990 #ifdef CONFIG_AWE32_MIXER
5991                 unload_mixer();
5992 #endif
5993 #ifdef CONFIG_AWE32_MIDIEMU
5994                 unload_midiemu();
5995 #endif
5996                 sound_unload_synthdev(my_dev);
5997                 awe_present = FALSE;
5998         }
5999 }
6000
6001
6002 /*
6003  * Legacy device Probing
6004  */
6005
6006 /* detect emu8000 chip on the specified address; from VV's guide */
6007
6008 static int __init
6009 awe_detect_base(int addr)
6010 {
6011         setup_ports(addr, 0, 0);
6012         if ((awe_peek(AWE_U1) & 0x000F) != 0x000C)
6013                 return 0;
6014         if ((awe_peek(AWE_HWCF1) & 0x007E) != 0x0058)
6015                 return 0;
6016         if ((awe_peek(AWE_HWCF2) & 0x0003) != 0x0003)
6017                 return 0;
6018         DEBUG(0,printk("AWE32 found at %x\n", addr));
6019         return 1;
6020 }
6021
6022 static int __init awe_detect_legacy_devices(void)
6023 {
6024         int base;
6025         for (base = 0x620; base <= 0x680; base += 0x20)
6026                 if (awe_detect_base(base)) {
6027                         awe_attach_device();
6028                         return 1;
6029                         }
6030         DEBUG(0,printk("AWE32 Legacy detection failed\n"));
6031         return 0;
6032 }
6033
6034
6035 /*
6036  * PnP device Probing
6037  */
6038
6039 static struct pnp_device_id awe_pnp_ids[] = {
6040         {.id = "CTL0021", .driver_data = 0}, /* AWE32 WaveTable */
6041         {.id = "CTL0022", .driver_data = 0}, /* AWE64 WaveTable */
6042         {.id = "CTL0023", .driver_data = 0}, /* AWE64 Gold WaveTable */
6043         { } /* terminator */
6044 };
6045
6046 MODULE_DEVICE_TABLE(pnp, awe_pnp_ids);
6047
6048 static int awe_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
6049 {
6050         int io1, io2, io3;
6051
6052         if (awe_present) {
6053                 printk(KERN_ERR "AWE32: This driver only supports one AWE32 device, skipping.\n");
6054         }
6055
6056         if (!pnp_port_valid(dev,0) ||
6057             !pnp_port_valid(dev,1) ||
6058             !pnp_port_valid(dev,2)) {
6059                 printk(KERN_ERR "AWE32: The PnP device does not have the required resources.\n");
6060                 return -EINVAL;
6061         }
6062         io1 = pnp_port_start(dev,0);
6063         io2 = pnp_port_start(dev,1);
6064         io3 = pnp_port_start(dev,2);
6065         printk(KERN_INFO "AWE32: A PnP Wave Table was detected at IO's %#x,%#x,%#x.\n",
6066                io1, io2, io3);
6067         setup_ports(io1, io2, io3);
6068
6069         awe_attach_device();
6070         return 0;
6071 }
6072
6073 static void awe_pnp_remove(struct pnp_dev *dev)
6074 {
6075         awe_dettach_device();
6076 }
6077
6078 static struct pnp_driver awe_pnp_driver = {
6079         .name           = "AWE32",
6080         .id_table       = awe_pnp_ids,
6081         .probe          = awe_pnp_probe,
6082         .remove         = awe_pnp_remove,
6083 };
6084
6085 static int __init awe_detect_pnp_devices(void)
6086 {
6087         int ret;
6088
6089         ret = pnp_register_driver(&awe_pnp_driver);
6090         if (ret<0)
6091                 printk(KERN_ERR "AWE32: PnP support is unavailable.\n");
6092         return ret;
6093 }
6094
6095
6096 /*
6097  * device / lowlevel (module) interface
6098  */
6099
6100 static int __init
6101 awe_detect(void)
6102 {
6103         printk(KERN_INFO "AWE32: Probing for WaveTable...\n");
6104         if (isapnp) {
6105                 if (awe_detect_pnp_devices()>=0)
6106                         return 1;
6107         } else
6108                 printk(KERN_INFO "AWE32: Skipping PnP detection.\n");
6109
6110         if (awe_detect_legacy_devices())
6111                 return 1;
6112
6113         return 0;
6114 }
6115
6116 static int __init attach_awe(void)
6117 {
6118         return awe_detect() ? 0 : -ENODEV;
6119 }
6120
6121 static void __exit unload_awe(void)
6122 {
6123         pnp_unregister_driver(&awe_pnp_driver);
6124         awe_dettach_device();
6125 }
6126
6127
6128 module_init(attach_awe);
6129 module_exit(unload_awe);
6130
6131 #ifndef MODULE
6132 static int __init setup_awe(char *str)
6133 {
6134         /* io, memsize, isapnp */
6135         int ints[4];
6136
6137         str = get_options(str, ARRAY_SIZE(ints), ints);
6138
6139         io = ints[1];
6140         memsize = ints[2];
6141         isapnp = ints[3];
6142
6143         return 1;
6144 }
6145
6146 __setup("awe=", setup_awe);
6147 #endif