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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 = 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                 kfree(vrec);
3552                 return rc;
3553         }
3554         sf->mem_ptr += rc;
3555         add_sf_sample(sf, smprec);
3556
3557         /* set up voice info */
3558         rec = &vrec->v;
3559         awe_init_voice_info(rec);
3560         rec->sample = sf->num_info; /* the last sample */
3561         rec->rate_offset = calc_rate_offset(patch.base_freq);
3562         note = freq_to_note(patch.base_note);
3563         rec->root = note / 100;
3564         rec->tune = -(note % 100);
3565         rec->low = freq_to_note(patch.low_note) / 100;
3566         rec->high = freq_to_note(patch.high_note) / 100;
3567         DEBUG(1,printk("AWE32: [gus base offset=%d, note=%d, range=%d-%d(%d-%d)]\n",
3568                        rec->rate_offset, note,
3569                        rec->low, rec->high,
3570               patch.low_note, patch.high_note));
3571         /* panning position; -128 - 127 => 0-127 */
3572         rec->pan = (patch.panning + 128) / 2;
3573
3574         /* detuning is ignored */
3575         /* 6points volume envelope */
3576         if (patch.mode & WAVE_ENVELOPES) {
3577                 int attack, hold, decay, release;
3578                 attack = calc_gus_envelope_time
3579                         (patch.env_rate[0], 0, patch.env_offset[0]);
3580                 hold = calc_gus_envelope_time
3581                         (patch.env_rate[1], patch.env_offset[0],
3582                          patch.env_offset[1]);
3583                 decay = calc_gus_envelope_time
3584                         (patch.env_rate[2], patch.env_offset[1],
3585                          patch.env_offset[2]);
3586                 release = calc_gus_envelope_time
3587                         (patch.env_rate[3], patch.env_offset[1],
3588                          patch.env_offset[4]);
3589                 release += calc_gus_envelope_time
3590                         (patch.env_rate[4], patch.env_offset[3],
3591                          patch.env_offset[4]);
3592                 release += calc_gus_envelope_time
3593                         (patch.env_rate[5], patch.env_offset[4],
3594                          patch.env_offset[5]);
3595                 rec->parm.volatkhld = (calc_parm_hold(hold) << 8) |
3596                         calc_parm_attack(attack);
3597                 rec->parm.voldcysus = (calc_gus_sustain(patch.env_offset[2]) << 8) |
3598                         calc_parm_decay(decay);
3599                 rec->parm.volrelease = 0x8000 | calc_parm_decay(release);
3600                 DEBUG(2,printk("AWE32: [gusenv atk=%d, hld=%d, dcy=%d, rel=%d]\n", attack, hold, decay, release));
3601                 rec->attenuation = calc_gus_attenuation(patch.env_offset[0]);
3602         }
3603
3604         /* tremolo effect */
3605         if (patch.mode & WAVE_TREMOLO) {
3606                 int rate = (patch.tremolo_rate * 1000 / 38) / 42;
3607                 rec->parm.tremfrq = ((patch.tremolo_depth / 2) << 8) | rate;
3608                 DEBUG(2,printk("AWE32: [gusenv tremolo rate=%d, dep=%d, tremfrq=%x]\n",
3609                                patch.tremolo_rate, patch.tremolo_depth,
3610                                rec->parm.tremfrq));
3611         }
3612         /* vibrato effect */
3613         if (patch.mode & WAVE_VIBRATO) {
3614                 int rate = (patch.vibrato_rate * 1000 / 38) / 42;
3615                 rec->parm.fm2frq2 = ((patch.vibrato_depth / 6) << 8) | rate;
3616                 DEBUG(2,printk("AWE32: [gusenv vibrato rate=%d, dep=%d, tremfrq=%x]\n",
3617                                patch.tremolo_rate, patch.tremolo_depth,
3618                                rec->parm.tremfrq));
3619         }
3620
3621         /* scale_freq, scale_factor, volume, and fractions not implemented */
3622
3623         /* append to the tail of the list */
3624         vrec->bank = ctrls[AWE_MD_GUS_BANK];
3625         vrec->instr = patch.instr_no;
3626         vrec->disabled = FALSE;
3627         vrec->type = V_ST_NORMAL;
3628
3629         add_sf_info(sf, vrec);
3630         add_info_list(vrec);
3631
3632         /* set the voice index */
3633         awe_set_sample(vrec);
3634
3635         return 0;
3636 }
3637
3638 #endif  /* AWE_HAS_GUS_COMPATIBILITY */
3639
3640 /*
3641  * sample and voice list handlers
3642  */
3643
3644 /* append this to the current sf list */
3645 static void add_sf_info(sf_list *sf, awe_voice_list *rec)
3646 {
3647         if (sf == NULL)
3648                 return;
3649         rec->holder = sf;
3650         rec->v.sf_id = sf->sf_id;
3651         if (sf->last_infos)
3652                 sf->last_infos->next = rec;
3653         else
3654                 sf->infos = rec;
3655         sf->last_infos = rec;
3656         rec->next = NULL;
3657         sf->num_info++;
3658 }
3659
3660 /* prepend this sample to sf list */
3661 static void add_sf_sample(sf_list *sf, awe_sample_list *rec)
3662 {
3663         if (sf == NULL)
3664                 return;
3665         rec->holder = sf;
3666         rec->v.sf_id = sf->sf_id;
3667         if (sf->last_samples)
3668                 sf->last_samples->next = rec;
3669         else
3670                 sf->samples = rec;
3671         sf->last_samples = rec;
3672         rec->next = NULL;
3673         sf->num_sample++;
3674 }
3675
3676 /* purge the old records which don't belong with the same file id */
3677 static void purge_old_list(awe_voice_list *rec, awe_voice_list *next)
3678 {
3679         rec->next_instr = next;
3680         if (rec->bank == AWE_DRUM_BANK) {
3681                 /* remove samples with the same note range */
3682                 awe_voice_list *cur, *prev = rec;
3683                 int low = rec->v.low;
3684                 int high = rec->v.high;
3685                 for (cur = next; cur; cur = cur->next_instr) {
3686                         if (cur->v.low == low &&
3687                             cur->v.high == high &&
3688                             ! is_identical_holder(cur->holder, rec->holder))
3689                                 prev->next_instr = cur->next_instr;
3690                         else
3691                                 prev = cur;
3692                 }
3693         } else {
3694                 if (! is_identical_holder(next->holder, rec->holder))
3695                         /* remove all samples */
3696                         rec->next_instr = NULL;
3697         }
3698 }
3699
3700 /* prepend to top of the preset table */
3701 static void add_info_list(awe_voice_list *rec)
3702 {
3703         awe_voice_list *prev, *cur;
3704         int key;
3705
3706         if (rec->disabled)
3707                 return;
3708
3709         key = awe_search_key(rec->bank, rec->instr, rec->v.low);
3710         prev = NULL;
3711         for (cur = preset_table[key]; cur; cur = cur->next_bank) {
3712                 /* search the first record with the same bank number */
3713                 if (cur->instr == rec->instr && cur->bank == rec->bank) {
3714                         /* replace the list with the new record */
3715                         rec->next_bank = cur->next_bank;
3716                         if (prev)
3717                                 prev->next_bank = rec;
3718                         else
3719                                 preset_table[key] = rec;
3720                         purge_old_list(rec, cur);
3721                         return;
3722                 }
3723                 prev = cur;
3724         }
3725
3726         /* this is the first bank record.. just add this */
3727         rec->next_instr = NULL;
3728         rec->next_bank = preset_table[key];
3729         preset_table[key] = rec;
3730 }
3731
3732 /* remove samples later than the specified sf_id */
3733 static void
3734 awe_remove_samples(int sf_id)
3735 {
3736         sf_list *p, *prev;
3737
3738         if (sf_id <= 0) {
3739                 awe_reset_samples();
3740                 return;
3741         }
3742         /* already removed? */
3743         if (current_sf_id <= sf_id)
3744                 return;
3745
3746         for (p = sftail; p; p = prev) {
3747                 if (p->sf_id <= sf_id)
3748                         break;
3749                 prev = p->prev;
3750                 awe_free_sf(p);
3751         }
3752         sftail = p;
3753         if (sftail) {
3754                 sf_id = sftail->sf_id;
3755                 sftail->next = NULL;
3756         } else {
3757                 sf_id = 0;
3758                 sfhead = NULL;
3759         }
3760         current_sf_id = sf_id;
3761         if (locked_sf_id > sf_id)
3762                 locked_sf_id = sf_id;
3763
3764         rebuild_preset_list();
3765 }
3766
3767 /* rebuild preset search list */
3768 static void rebuild_preset_list(void)
3769 {
3770         sf_list *p;
3771         awe_voice_list *rec;
3772
3773         memset(preset_table, 0, sizeof(preset_table));
3774
3775         for (p = sfhead; p; p = p->next) {
3776                 for (rec = p->infos; rec; rec = rec->next)
3777                         add_info_list(rec);
3778         }
3779 }
3780
3781 /* compare the given sf_id pair */
3782 static int is_identical_holder(sf_list *sf1, sf_list *sf2)
3783 {
3784         if (sf1 == NULL || sf2 == NULL)
3785                 return FALSE;
3786         if (sf1 == sf2)
3787                 return TRUE;
3788 #ifdef AWE_ALLOW_SAMPLE_SHARING
3789         {
3790                 /* compare with the sharing id */
3791                 sf_list *p;
3792                 int counter = 0;
3793                 if (sf1->sf_id < sf2->sf_id) { /* make sure id1 > id2 */
3794                         sf_list *tmp; tmp = sf1; sf1 = sf2; sf2 = tmp;
3795                 }
3796                 for (p = sf1->shared; p; p = p->shared) {
3797                         if (counter++ > current_sf_id)
3798                                 break; /* strange sharing loop.. quit */
3799                         if (p == sf2)
3800                                 return TRUE;
3801                 }
3802         }
3803 #endif /* allow sharing */
3804         return FALSE;
3805 }
3806
3807 /* search the sample index matching with the given sample id */
3808 static awe_sample_list *
3809 search_sample_index(sf_list *sf, int sample)
3810 {
3811         awe_sample_list *p;
3812 #ifdef AWE_ALLOW_SAMPLE_SHARING
3813         int counter = 0;
3814         while (sf) {
3815                 for (p = sf->samples; p; p = p->next) {
3816                         if (p->v.sample == sample)
3817                                 return p;
3818                 }
3819                 sf = sf->shared;
3820                 if (counter++ > current_sf_id)
3821                         break; /* strange sharing loop.. quit */
3822         }
3823 #else
3824         if (sf) {
3825                 for (p = sf->samples; p; p = p->next) {
3826                         if (p->v.sample == sample)
3827                                 return p;
3828                 }
3829         }
3830 #endif
3831         return NULL;
3832 }
3833
3834 /* search the specified sample */
3835 /* non-zero = found */
3836 static short
3837 awe_set_sample(awe_voice_list *rec)
3838 {
3839         awe_sample_list *smp;
3840         awe_voice_info *vp = &rec->v;
3841
3842         vp->index = 0;
3843         if ((smp = search_sample_index(rec->holder, vp->sample)) == NULL)
3844                 return 0;
3845
3846         /* set the actual sample offsets */
3847         vp->start += smp->v.start;
3848         vp->end += smp->v.end;
3849         vp->loopstart += smp->v.loopstart;
3850         vp->loopend += smp->v.loopend;
3851         /* copy mode flags */
3852         vp->mode = smp->v.mode_flags;
3853         /* set flag */
3854         vp->index = 1;
3855
3856         return 1;
3857 }
3858
3859
3860 /*
3861  * voice allocation
3862  */
3863
3864 /* look for all voices associated with the specified note & velocity */
3865 static int
3866 awe_search_multi_voices(awe_voice_list *rec, int note, int velocity,
3867                         awe_voice_info **vlist)
3868 {
3869         int nvoices;
3870
3871         nvoices = 0;
3872         for (; rec; rec = rec->next_instr) {
3873                 if (note >= rec->v.low &&
3874                     note <= rec->v.high &&
3875                     velocity >= rec->v.vellow &&
3876                     velocity <= rec->v.velhigh) {
3877                         if (rec->type == V_ST_MAPPED) {
3878                                 /* mapper */
3879                                 vlist[0] = &rec->v;
3880                                 return -1;
3881                         }
3882                         vlist[nvoices++] = &rec->v;
3883                         if (nvoices >= AWE_MAX_VOICES)
3884                                 break;
3885                 }
3886         }
3887         return nvoices;
3888 }
3889
3890 /* store the voice list from the specified note and velocity.
3891    if the preset is mapped, seek for the destination preset, and rewrite
3892    the note number if necessary.
3893    */
3894 static int
3895 really_alloc_voices(int bank, int instr, int *note, int velocity, awe_voice_info **vlist)
3896 {
3897         int nvoices;
3898         awe_voice_list *vrec;
3899         int level = 0;
3900
3901         for (;;) {
3902                 vrec = awe_search_instr(bank, instr, *note);
3903                 nvoices = awe_search_multi_voices(vrec, *note, velocity, vlist);
3904                 if (nvoices == 0) {
3905                         if (bank == AWE_DRUM_BANK)
3906                                 /* search default drumset */
3907                                 vrec = awe_search_instr(bank, ctrls[AWE_MD_DEF_DRUM], *note);
3908                         else
3909                                 /* search default preset */
3910                                 vrec = awe_search_instr(ctrls[AWE_MD_DEF_BANK], instr, *note);
3911                         nvoices = awe_search_multi_voices(vrec, *note, velocity, vlist);
3912                 }
3913                 if (nvoices == 0) {
3914                         if (bank == AWE_DRUM_BANK && ctrls[AWE_MD_DEF_DRUM] != 0)
3915                                 /* search default drumset */
3916                                 vrec = awe_search_instr(bank, 0, *note);
3917                         else if (bank != AWE_DRUM_BANK && ctrls[AWE_MD_DEF_BANK] != 0)
3918                                 /* search default preset */
3919                                 vrec = awe_search_instr(0, instr, *note);
3920                         nvoices = awe_search_multi_voices(vrec, *note, velocity, vlist);
3921                 }
3922                 if (nvoices < 0) { /* mapping */
3923                         int key = vlist[0]->fixkey;
3924                         instr = vlist[0]->start;
3925                         bank = vlist[0]->end;
3926                         if (level++ > 5) {
3927                                 printk(KERN_ERR "AWE32: too deep mapping level\n");
3928                                 return 0;
3929                         }
3930                         if (key >= 0)
3931                                 *note = key;
3932                 } else
3933                         break;
3934         }
3935
3936         return nvoices;
3937 }
3938
3939 /* allocate voices corresponding note and velocity; supports multiple insts. */
3940 static void
3941 awe_alloc_multi_voices(int ch, int note, int velocity, int key)
3942 {
3943         int i, v, nvoices, bank;
3944         awe_voice_info *vlist[AWE_MAX_VOICES];
3945
3946         if (MULTI_LAYER_MODE() && IS_DRUM_CHANNEL(ch))
3947                 bank = AWE_DRUM_BANK; /* always search drumset */
3948         else
3949                 bank = channels[ch].bank;
3950
3951         /* check the possible voices; note may be changeable if mapped */
3952         nvoices = really_alloc_voices(bank, channels[ch].instr,
3953                                       &note, velocity, vlist);
3954
3955         /* set the voices */
3956         current_alloc_time++;
3957         for (i = 0; i < nvoices; i++) {
3958                 v = awe_clear_voice();
3959                 voices[v].key = key;
3960                 voices[v].ch = ch;
3961                 voices[v].note = note;
3962                 voices[v].velocity = velocity;
3963                 voices[v].time = current_alloc_time;
3964                 voices[v].cinfo = &channels[ch];
3965                 voices[v].sample = vlist[i];
3966                 voices[v].state = AWE_ST_MARK;
3967                 voices[v].layer = nvoices - i - 1;  /* in reverse order */
3968         }
3969
3970         /* clear the mark in allocated voices */
3971         for (i = 0; i < awe_max_voices; i++) {
3972                 if (voices[i].state == AWE_ST_MARK)
3973                         voices[i].state = AWE_ST_OFF;
3974
3975         }
3976 }
3977
3978
3979 /* search an empty voice.
3980    if no empty voice is found, at least terminate a voice
3981    */
3982 static int
3983 awe_clear_voice(void)
3984 {
3985         enum {
3986                 OFF=0, RELEASED, SUSTAINED, PLAYING, END
3987         };
3988         struct voice_candidate_t {
3989                 int best;
3990                 int time;
3991                 int vtarget;
3992         } candidate[END];
3993         int i, type, vtarget;
3994
3995         vtarget = 0xffff;
3996         for (type = OFF; type < END; type++) {
3997                 candidate[type].best = -1;
3998                 candidate[type].time = current_alloc_time + 1;
3999                 candidate[type].vtarget = vtarget;
4000         }
4001
4002         for (i = 0; i < awe_max_voices; i++) {
4003                 if (voices[i].state & AWE_ST_OFF)
4004                         type = OFF;
4005                 else if (voices[i].state & AWE_ST_RELEASED)
4006                         type = RELEASED;
4007                 else if (voices[i].state & AWE_ST_SUSTAINED)
4008                         type = SUSTAINED;
4009                 else if (voices[i].state & ~AWE_ST_MARK)
4010                         type = PLAYING;
4011                 else
4012                         continue;
4013 #ifdef AWE_CHECK_VTARGET
4014                 /* get current volume */
4015                 vtarget = (awe_peek_dw(AWE_VTFT(i)) >> 16) & 0xffff;
4016 #endif
4017                 if (candidate[type].best < 0 ||
4018                     vtarget < candidate[type].vtarget ||
4019                     (vtarget == candidate[type].vtarget &&
4020                      voices[i].time < candidate[type].time)) {
4021                         candidate[type].best = i;
4022                         candidate[type].time = voices[i].time;
4023                         candidate[type].vtarget = vtarget;
4024                 }
4025         }
4026
4027         for (type = OFF; type < END; type++) {
4028                 if ((i = candidate[type].best) >= 0) {
4029                         if (voices[i].state != AWE_ST_OFF)
4030                                 awe_terminate(i);
4031                         awe_voice_init(i, TRUE);
4032                         return i;
4033                 }
4034         }
4035         return 0;
4036 }
4037
4038
4039 /* search sample for the specified note & velocity and set it on the voice;
4040  * note that voice is the voice index (not channel index)
4041  */
4042 static void
4043 awe_alloc_one_voice(int voice, int note, int velocity)
4044 {
4045         int ch, nvoices, bank;
4046         awe_voice_info *vlist[AWE_MAX_VOICES];
4047
4048         ch = voices[voice].ch;
4049         if (MULTI_LAYER_MODE() && IS_DRUM_CHANNEL(voice))
4050                 bank = AWE_DRUM_BANK; /* always search drumset */
4051         else
4052                 bank = voices[voice].cinfo->bank;
4053
4054         nvoices = really_alloc_voices(bank, voices[voice].cinfo->instr,
4055                                       &note, velocity, vlist);
4056         if (nvoices > 0) {
4057                 voices[voice].time = ++current_alloc_time;
4058                 voices[voice].sample = vlist[0]; /* use the first one */
4059                 voices[voice].layer = 0;
4060                 voices[voice].note = note;
4061                 voices[voice].velocity = velocity;
4062         }
4063 }
4064
4065
4066 /*
4067  * sequencer2 functions
4068  */
4069
4070 /* search an empty voice; used by sequencer2 */
4071 static int
4072 awe_alloc(int dev, int chn, int note, struct voice_alloc_info *alloc)
4073 {
4074         playing_mode = AWE_PLAY_MULTI2;
4075         awe_info.nr_voices = AWE_MAX_CHANNELS;
4076         return awe_clear_voice();
4077 }
4078
4079
4080 /* set up voice; used by sequencer2 */
4081 static void
4082 awe_setup_voice(int dev, int voice, int chn)
4083 {
4084         struct channel_info *info;
4085         if (synth_devs[dev] == NULL ||
4086             (info = &synth_devs[dev]->chn_info[chn]) == NULL)
4087                 return;
4088
4089         if (voice < 0 || voice >= awe_max_voices)
4090                 return;
4091
4092         DEBUG(2,printk("AWE32: [setup(%d) ch=%d]\n", voice, chn));
4093         channels[chn].expression_vol = info->controllers[CTL_EXPRESSION];
4094         channels[chn].main_vol = info->controllers[CTL_MAIN_VOLUME];
4095         channels[chn].panning =
4096                 info->controllers[CTL_PAN] * 2 - 128; /* signed 8bit */
4097         channels[chn].bender = info->bender_value; /* zero center */
4098         channels[chn].bank = info->controllers[CTL_BANK_SELECT];
4099         channels[chn].sustained = info->controllers[CTL_SUSTAIN];
4100         if (info->controllers[CTL_EXT_EFF_DEPTH]) {
4101                 FX_SET(&channels[chn].fx, AWE_FX_REVERB,
4102                        info->controllers[CTL_EXT_EFF_DEPTH] * 2);
4103         }
4104         if (info->controllers[CTL_CHORUS_DEPTH]) {
4105                 FX_SET(&channels[chn].fx, AWE_FX_CHORUS,
4106                        info->controllers[CTL_CHORUS_DEPTH] * 2);
4107         }
4108         awe_set_instr(dev, chn, info->pgm_num);
4109 }
4110
4111
4112 #ifdef CONFIG_AWE32_MIXER
4113 /*
4114  * AWE32 mixer device control
4115  */
4116
4117 static int awe_mixer_ioctl(int dev, unsigned int cmd, void __user *arg);
4118
4119 static int my_mixerdev = -1;
4120
4121 static struct mixer_operations awe_mixer_operations = {
4122         .owner  = THIS_MODULE,
4123         .id     = "AWE",
4124         .name   = "AWE32 Equalizer",
4125         .ioctl  = awe_mixer_ioctl,
4126 };
4127
4128 static void __init attach_mixer(void)
4129 {
4130         if ((my_mixerdev = sound_alloc_mixerdev()) >= 0) {
4131                 mixer_devs[my_mixerdev] = &awe_mixer_operations;
4132         }
4133 }
4134
4135 static void unload_mixer(void)
4136 {
4137         if (my_mixerdev >= 0)
4138                 sound_unload_mixerdev(my_mixerdev);
4139 }
4140
4141 static int
4142 awe_mixer_ioctl(int dev, unsigned int cmd, void __user * arg)
4143 {
4144         int i, level, value;
4145
4146         if (((cmd >> 8) & 0xff) != 'M')
4147                 return -EINVAL;
4148
4149         if (get_user(level, (int __user *)arg))
4150                 return -EFAULT;
4151         level = ((level & 0xff) + (level >> 8)) / 2;
4152         DEBUG(0,printk("AWEMix: cmd=%x val=%d\n", cmd & 0xff, level));
4153
4154         if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
4155                 switch (cmd & 0xff) {
4156                 case SOUND_MIXER_BASS:
4157                         value = level * 12 / 100;
4158                         if (value >= 12)
4159                                 value = 11;
4160                         ctrls[AWE_MD_BASS_LEVEL] = value;
4161                         awe_update_equalizer();
4162                         break;
4163                 case SOUND_MIXER_TREBLE:
4164                         value = level * 12 / 100;
4165                         if (value >= 12)
4166                                 value = 11;
4167                         ctrls[AWE_MD_TREBLE_LEVEL] = value;
4168                         awe_update_equalizer();
4169                         break;
4170                 case SOUND_MIXER_VOLUME:
4171                         level = level * 127 / 100;
4172                         if (level >= 128) level = 127;
4173                         atten_relative = FALSE;
4174                         atten_offset = vol_table[level];
4175                         awe_update_volume();
4176                         break;
4177                 }
4178         }
4179         switch (cmd & 0xff) {
4180         case SOUND_MIXER_BASS:
4181                 level = ctrls[AWE_MD_BASS_LEVEL] * 100 / 24;
4182                 level = (level << 8) | level;
4183                 break;
4184         case SOUND_MIXER_TREBLE:
4185                 level = ctrls[AWE_MD_TREBLE_LEVEL] * 100 / 24;
4186                 level = (level << 8) | level;
4187                 break;
4188         case SOUND_MIXER_VOLUME:
4189                 value = atten_offset;
4190                 if (atten_relative)
4191                         value += ctrls[AWE_MD_ZERO_ATTEN];
4192                 for (i = 127; i > 0; i--) {
4193                         if (value <= vol_table[i])
4194                                 break;
4195                 }
4196                 level = i * 100 / 127;
4197                 level = (level << 8) | level;
4198                 break;
4199         case SOUND_MIXER_DEVMASK:
4200                 level = SOUND_MASK_BASS|SOUND_MASK_TREBLE|SOUND_MASK_VOLUME;
4201                 break;
4202         default:
4203                 level = 0;
4204                 break;
4205         }
4206         if (put_user(level, (int __user *)arg))
4207                 return -EFAULT;
4208         return level;
4209 }
4210 #endif /* CONFIG_AWE32_MIXER */
4211
4212
4213 /*
4214  * initialization of Emu8000
4215  */
4216
4217 /* intiailize audio channels */
4218 static void
4219 awe_init_audio(void)
4220 {
4221         int ch;
4222
4223         /* turn off envelope engines */
4224         for (ch = 0; ch < AWE_MAX_VOICES; ch++) {
4225                 awe_poke(AWE_DCYSUSV(ch), 0x80);
4226         }
4227
4228         /* reset all other parameters to zero */
4229         for (ch = 0; ch < AWE_MAX_VOICES; ch++) {
4230                 awe_poke(AWE_ENVVOL(ch), 0);
4231                 awe_poke(AWE_ENVVAL(ch), 0);
4232                 awe_poke(AWE_DCYSUS(ch), 0);
4233                 awe_poke(AWE_ATKHLDV(ch), 0);
4234                 awe_poke(AWE_LFO1VAL(ch), 0);
4235                 awe_poke(AWE_ATKHLD(ch), 0);
4236                 awe_poke(AWE_LFO2VAL(ch), 0);
4237                 awe_poke(AWE_IP(ch), 0);
4238                 awe_poke(AWE_IFATN(ch), 0);
4239                 awe_poke(AWE_PEFE(ch), 0);
4240                 awe_poke(AWE_FMMOD(ch), 0);
4241                 awe_poke(AWE_TREMFRQ(ch), 0);
4242                 awe_poke(AWE_FM2FRQ2(ch), 0);
4243                 awe_poke_dw(AWE_PTRX(ch), 0);
4244                 awe_poke_dw(AWE_VTFT(ch), 0);
4245                 awe_poke_dw(AWE_PSST(ch), 0);
4246                 awe_poke_dw(AWE_CSL(ch), 0);
4247                 awe_poke_dw(AWE_CCCA(ch), 0);
4248         }
4249
4250         for (ch = 0; ch < AWE_MAX_VOICES; ch++) {
4251                 awe_poke_dw(AWE_CPF(ch), 0);
4252                 awe_poke_dw(AWE_CVCF(ch), 0);
4253         }
4254 }
4255
4256
4257 /* initialize DMA address */
4258 static void
4259 awe_init_dma(void)
4260 {
4261         awe_poke_dw(AWE_SMALR, 0);
4262         awe_poke_dw(AWE_SMARR, 0);
4263         awe_poke_dw(AWE_SMALW, 0);
4264         awe_poke_dw(AWE_SMARW, 0);
4265 }
4266
4267
4268 /* initialization arrays; from ADIP */
4269
4270 static unsigned short init1[128] = {
4271         0x03ff, 0x0030,  0x07ff, 0x0130, 0x0bff, 0x0230,  0x0fff, 0x0330,
4272         0x13ff, 0x0430,  0x17ff, 0x0530, 0x1bff, 0x0630,  0x1fff, 0x0730,
4273         0x23ff, 0x0830,  0x27ff, 0x0930, 0x2bff, 0x0a30,  0x2fff, 0x0b30,
4274         0x33ff, 0x0c30,  0x37ff, 0x0d30, 0x3bff, 0x0e30,  0x3fff, 0x0f30,
4275
4276         0x43ff, 0x0030,  0x47ff, 0x0130, 0x4bff, 0x0230,  0x4fff, 0x0330,
4277         0x53ff, 0x0430,  0x57ff, 0x0530, 0x5bff, 0x0630,  0x5fff, 0x0730,
4278         0x63ff, 0x0830,  0x67ff, 0x0930, 0x6bff, 0x0a30,  0x6fff, 0x0b30,
4279         0x73ff, 0x0c30,  0x77ff, 0x0d30, 0x7bff, 0x0e30,  0x7fff, 0x0f30,
4280
4281         0x83ff, 0x0030,  0x87ff, 0x0130, 0x8bff, 0x0230,  0x8fff, 0x0330,
4282         0x93ff, 0x0430,  0x97ff, 0x0530, 0x9bff, 0x0630,  0x9fff, 0x0730,
4283         0xa3ff, 0x0830,  0xa7ff, 0x0930, 0xabff, 0x0a30,  0xafff, 0x0b30,
4284         0xb3ff, 0x0c30,  0xb7ff, 0x0d30, 0xbbff, 0x0e30,  0xbfff, 0x0f30,
4285
4286         0xc3ff, 0x0030,  0xc7ff, 0x0130, 0xcbff, 0x0230,  0xcfff, 0x0330,
4287         0xd3ff, 0x0430,  0xd7ff, 0x0530, 0xdbff, 0x0630,  0xdfff, 0x0730,
4288         0xe3ff, 0x0830,  0xe7ff, 0x0930, 0xebff, 0x0a30,  0xefff, 0x0b30,
4289         0xf3ff, 0x0c30,  0xf7ff, 0x0d30, 0xfbff, 0x0e30,  0xffff, 0x0f30,
4290 };
4291
4292 static unsigned short init2[128] = {
4293         0x03ff, 0x8030, 0x07ff, 0x8130, 0x0bff, 0x8230, 0x0fff, 0x8330,
4294         0x13ff, 0x8430, 0x17ff, 0x8530, 0x1bff, 0x8630, 0x1fff, 0x8730,
4295         0x23ff, 0x8830, 0x27ff, 0x8930, 0x2bff, 0x8a30, 0x2fff, 0x8b30,
4296         0x33ff, 0x8c30, 0x37ff, 0x8d30, 0x3bff, 0x8e30, 0x3fff, 0x8f30,
4297
4298         0x43ff, 0x8030, 0x47ff, 0x8130, 0x4bff, 0x8230, 0x4fff, 0x8330,
4299         0x53ff, 0x8430, 0x57ff, 0x8530, 0x5bff, 0x8630, 0x5fff, 0x8730,
4300         0x63ff, 0x8830, 0x67ff, 0x8930, 0x6bff, 0x8a30, 0x6fff, 0x8b30,
4301         0x73ff, 0x8c30, 0x77ff, 0x8d30, 0x7bff, 0x8e30, 0x7fff, 0x8f30,
4302
4303         0x83ff, 0x8030, 0x87ff, 0x8130, 0x8bff, 0x8230, 0x8fff, 0x8330,
4304         0x93ff, 0x8430, 0x97ff, 0x8530, 0x9bff, 0x8630, 0x9fff, 0x8730,
4305         0xa3ff, 0x8830, 0xa7ff, 0x8930, 0xabff, 0x8a30, 0xafff, 0x8b30,
4306         0xb3ff, 0x8c30, 0xb7ff, 0x8d30, 0xbbff, 0x8e30, 0xbfff, 0x8f30,
4307
4308         0xc3ff, 0x8030, 0xc7ff, 0x8130, 0xcbff, 0x8230, 0xcfff, 0x8330,
4309         0xd3ff, 0x8430, 0xd7ff, 0x8530, 0xdbff, 0x8630, 0xdfff, 0x8730,
4310         0xe3ff, 0x8830, 0xe7ff, 0x8930, 0xebff, 0x8a30, 0xefff, 0x8b30,
4311         0xf3ff, 0x8c30, 0xf7ff, 0x8d30, 0xfbff, 0x8e30, 0xffff, 0x8f30,
4312 };
4313
4314 static unsigned short init3[128] = {
4315         0x0C10, 0x8470, 0x14FE, 0xB488, 0x167F, 0xA470, 0x18E7, 0x84B5,
4316         0x1B6E, 0x842A, 0x1F1D, 0x852A, 0x0DA3, 0x8F7C, 0x167E, 0xF254,
4317         0x0000, 0x842A, 0x0001, 0x852A, 0x18E6, 0x8BAA, 0x1B6D, 0xF234,
4318         0x229F, 0x8429, 0x2746, 0x8529, 0x1F1C, 0x86E7, 0x229E, 0xF224,
4319
4320         0x0DA4, 0x8429, 0x2C29, 0x8529, 0x2745, 0x87F6, 0x2C28, 0xF254,
4321         0x383B, 0x8428, 0x320F, 0x8528, 0x320E, 0x8F02, 0x1341, 0xF264,
4322         0x3EB6, 0x8428, 0x3EB9, 0x8528, 0x383A, 0x8FA9, 0x3EB5, 0xF294,
4323         0x3EB7, 0x8474, 0x3EBA, 0x8575, 0x3EB8, 0xC4C3, 0x3EBB, 0xC5C3,
4324
4325         0x0000, 0xA404, 0x0001, 0xA504, 0x141F, 0x8671, 0x14FD, 0x8287,
4326         0x3EBC, 0xE610, 0x3EC8, 0x8C7B, 0x031A, 0x87E6, 0x3EC8, 0x86F7,
4327         0x3EC0, 0x821E, 0x3EBE, 0xD208, 0x3EBD, 0x821F, 0x3ECA, 0x8386,
4328         0x3EC1, 0x8C03, 0x3EC9, 0x831E, 0x3ECA, 0x8C4C, 0x3EBF, 0x8C55,
4329
4330         0x3EC9, 0xC208, 0x3EC4, 0xBC84, 0x3EC8, 0x8EAD, 0x3EC8, 0xD308,
4331         0x3EC2, 0x8F7E, 0x3ECB, 0x8219, 0x3ECB, 0xD26E, 0x3EC5, 0x831F,
4332         0x3EC6, 0xC308, 0x3EC3, 0xB2FF, 0x3EC9, 0x8265, 0x3EC9, 0x8319,
4333         0x1342, 0xD36E, 0x3EC7, 0xB3FF, 0x0000, 0x8365, 0x1420, 0x9570,
4334 };
4335
4336 static unsigned short init4[128] = {
4337         0x0C10, 0x8470, 0x14FE, 0xB488, 0x167F, 0xA470, 0x18E7, 0x84B5,
4338         0x1B6E, 0x842A, 0x1F1D, 0x852A, 0x0DA3, 0x0F7C, 0x167E, 0x7254,
4339         0x0000, 0x842A, 0x0001, 0x852A, 0x18E6, 0x0BAA, 0x1B6D, 0x7234,
4340         0x229F, 0x8429, 0x2746, 0x8529, 0x1F1C, 0x06E7, 0x229E, 0x7224,
4341
4342         0x0DA4, 0x8429, 0x2C29, 0x8529, 0x2745, 0x07F6, 0x2C28, 0x7254,
4343         0x383B, 0x8428, 0x320F, 0x8528, 0x320E, 0x0F02, 0x1341, 0x7264,
4344         0x3EB6, 0x8428, 0x3EB9, 0x8528, 0x383A, 0x0FA9, 0x3EB5, 0x7294,
4345         0x3EB7, 0x8474, 0x3EBA, 0x8575, 0x3EB8, 0x44C3, 0x3EBB, 0x45C3,
4346
4347         0x0000, 0xA404, 0x0001, 0xA504, 0x141F, 0x0671, 0x14FD, 0x0287,
4348         0x3EBC, 0xE610, 0x3EC8, 0x0C7B, 0x031A, 0x07E6, 0x3EC8, 0x86F7,
4349         0x3EC0, 0x821E, 0x3EBE, 0xD208, 0x3EBD, 0x021F, 0x3ECA, 0x0386,
4350         0x3EC1, 0x0C03, 0x3EC9, 0x031E, 0x3ECA, 0x8C4C, 0x3EBF, 0x0C55,
4351
4352         0x3EC9, 0xC208, 0x3EC4, 0xBC84, 0x3EC8, 0x0EAD, 0x3EC8, 0xD308,
4353         0x3EC2, 0x8F7E, 0x3ECB, 0x0219, 0x3ECB, 0xD26E, 0x3EC5, 0x031F,
4354         0x3EC6, 0xC308, 0x3EC3, 0x32FF, 0x3EC9, 0x0265, 0x3EC9, 0x8319,
4355         0x1342, 0xD36E, 0x3EC7, 0x33FF, 0x0000, 0x8365, 0x1420, 0x9570,
4356 };
4357
4358
4359 /* send initialization arrays to start up */
4360 static void
4361 awe_init_array(void)
4362 {
4363         awe_send_array(init1);
4364         awe_wait(1024);
4365         awe_send_array(init2);
4366         awe_send_array(init3);
4367         awe_poke_dw(AWE_HWCF4, 0);
4368         awe_poke_dw(AWE_HWCF5, 0x83);
4369         awe_poke_dw(AWE_HWCF6, 0x8000);
4370         awe_send_array(init4);
4371 }
4372
4373 /* send an initialization array */
4374 static void
4375 awe_send_array(unsigned short *data)
4376 {
4377         int i;
4378         unsigned short *p;
4379
4380         p = data;
4381         for (i = 0; i < AWE_MAX_VOICES; i++, p++)
4382                 awe_poke(AWE_INIT1(i), *p);
4383         for (i = 0; i < AWE_MAX_VOICES; i++, p++)
4384                 awe_poke(AWE_INIT2(i), *p);
4385         for (i = 0; i < AWE_MAX_VOICES; i++, p++)
4386                 awe_poke(AWE_INIT3(i), *p);
4387         for (i = 0; i < AWE_MAX_VOICES; i++, p++)
4388                 awe_poke(AWE_INIT4(i), *p);
4389 }
4390
4391
4392 /*
4393  * set up awe32 channels to some known state.
4394  */
4395
4396 /* set the envelope & LFO parameters to the default values; see ADIP */
4397 static void
4398 awe_tweak_voice(int i)
4399 {
4400         /* set all mod/vol envelope shape to minimum */
4401         awe_poke(AWE_ENVVOL(i), 0x8000);
4402         awe_poke(AWE_ENVVAL(i), 0x8000);
4403         awe_poke(AWE_DCYSUS(i), 0x7F7F);
4404         awe_poke(AWE_ATKHLDV(i), 0x7F7F);
4405         awe_poke(AWE_ATKHLD(i), 0x7F7F);
4406         awe_poke(AWE_PEFE(i), 0);  /* mod envelope height to zero */
4407         awe_poke(AWE_LFO1VAL(i), 0x8000); /* no delay for LFO1 */
4408         awe_poke(AWE_LFO2VAL(i), 0x8000);
4409         awe_poke(AWE_IP(i), 0xE000);    /* no pitch shift */
4410         awe_poke(AWE_IFATN(i), 0xFF00); /* volume to minimum */
4411         awe_poke(AWE_FMMOD(i), 0);
4412         awe_poke(AWE_TREMFRQ(i), 0);
4413         awe_poke(AWE_FM2FRQ2(i), 0);
4414 }
4415
4416 static void
4417 awe_tweak(void)
4418 {
4419         int i;
4420         /* reset all channels */
4421         for (i = 0; i < awe_max_voices; i++)
4422                 awe_tweak_voice(i);
4423 }
4424
4425
4426 /*
4427  *  initializes the FM section of AWE32;
4428  *   see Vince Vu's unofficial AWE32 programming guide
4429  */
4430
4431 static void
4432 awe_init_fm(void)
4433 {
4434 #ifndef AWE_ALWAYS_INIT_FM
4435         /* if no extended memory is on board.. */
4436         if (memsize <= 0)
4437                 return;
4438 #endif
4439         DEBUG(3,printk("AWE32: initializing FM\n"));
4440
4441         /* Initialize the last two channels for DRAM refresh and producing
4442            the reverb and chorus effects for Yamaha OPL-3 synthesizer */
4443
4444         /* 31: FM left channel, 0xffffe0-0xffffe8 */
4445         awe_poke(AWE_DCYSUSV(30), 0x80);
4446         awe_poke_dw(AWE_PSST(30), 0xFFFFFFE0); /* full left */
4447         awe_poke_dw(AWE_CSL(30), 0x00FFFFE8 |
4448                     (DEF_FM_CHORUS_DEPTH << 24));
4449         awe_poke_dw(AWE_PTRX(30), (DEF_FM_REVERB_DEPTH << 8));
4450         awe_poke_dw(AWE_CPF(30), 0);
4451         awe_poke_dw(AWE_CCCA(30), 0x00FFFFE3);
4452
4453         /* 32: FM right channel, 0xfffff0-0xfffff8 */
4454         awe_poke(AWE_DCYSUSV(31), 0x80);
4455         awe_poke_dw(AWE_PSST(31), 0x00FFFFF0); /* full right */
4456         awe_poke_dw(AWE_CSL(31), 0x00FFFFF8 |
4457                     (DEF_FM_CHORUS_DEPTH << 24));
4458         awe_poke_dw(AWE_PTRX(31), (DEF_FM_REVERB_DEPTH << 8));
4459         awe_poke_dw(AWE_CPF(31), 0x8000);
4460         awe_poke_dw(AWE_CCCA(31), 0x00FFFFF3);
4461
4462         /* skew volume & cutoff */
4463         awe_poke_dw(AWE_VTFT(30), 0x8000FFFF);
4464         awe_poke_dw(AWE_VTFT(31), 0x8000FFFF);
4465
4466         voices[30].state = AWE_ST_FM;
4467         voices[31].state = AWE_ST_FM;
4468
4469         /* change maximum channels to 30 */
4470         awe_max_voices = AWE_NORMAL_VOICES;
4471         if (playing_mode == AWE_PLAY_DIRECT)
4472                 awe_info.nr_voices = awe_max_voices;
4473         else
4474                 awe_info.nr_voices = AWE_MAX_CHANNELS;
4475         voice_alloc->max_voice = awe_max_voices;
4476 }
4477
4478 /*
4479  *  AWE32 DRAM access routines
4480  */
4481
4482 /* open DRAM write accessing mode */
4483 static int
4484 awe_open_dram_for_write(int offset, int channels)
4485 {
4486         int vidx[AWE_NORMAL_VOICES];
4487         int i;
4488
4489         if (channels < 0 || channels >= AWE_NORMAL_VOICES) {
4490                 channels = AWE_NORMAL_VOICES;
4491                 for (i = 0; i < AWE_NORMAL_VOICES; i++)
4492                         vidx[i] = i;
4493         } else {
4494                 for (i = 0; i < channels; i++) {
4495                         vidx[i] = awe_clear_voice();
4496                         voices[vidx[i]].state = AWE_ST_MARK;
4497                 }
4498         }
4499
4500         /* use all channels for DMA transfer */
4501         for (i = 0; i < channels; i++) {
4502                 if (vidx[i] < 0) continue;
4503                 awe_poke(AWE_DCYSUSV(vidx[i]), 0x80);
4504                 awe_poke_dw(AWE_VTFT(vidx[i]), 0);
4505                 awe_poke_dw(AWE_CVCF(vidx[i]), 0);
4506                 awe_poke_dw(AWE_PTRX(vidx[i]), 0x40000000);
4507                 awe_poke_dw(AWE_CPF(vidx[i]), 0x40000000);
4508                 awe_poke_dw(AWE_PSST(vidx[i]), 0);
4509                 awe_poke_dw(AWE_CSL(vidx[i]), 0);
4510                 awe_poke_dw(AWE_CCCA(vidx[i]), 0x06000000);
4511                 voices[vidx[i]].state = AWE_ST_DRAM;
4512         }
4513         /* point channels 31 & 32 to ROM samples for DRAM refresh */
4514         awe_poke_dw(AWE_VTFT(30), 0);
4515         awe_poke_dw(AWE_PSST(30), 0x1d8);
4516         awe_poke_dw(AWE_CSL(30), 0x1e0);
4517         awe_poke_dw(AWE_CCCA(30), 0x1d8);
4518         awe_poke_dw(AWE_VTFT(31), 0);
4519         awe_poke_dw(AWE_PSST(31), 0x1d8);
4520         awe_poke_dw(AWE_CSL(31), 0x1e0);
4521         awe_poke_dw(AWE_CCCA(31), 0x1d8);
4522         voices[30].state = AWE_ST_FM;
4523         voices[31].state = AWE_ST_FM;
4524
4525         /* if full bit is on, not ready to write on */
4526         if (awe_peek_dw(AWE_SMALW) & 0x80000000) {
4527                 for (i = 0; i < channels; i++) {
4528                         awe_poke_dw(AWE_CCCA(vidx[i]), 0);
4529                         voices[vidx[i]].state = AWE_ST_OFF;
4530                 }
4531                 printk("awe: not ready to write..\n");
4532                 return -EPERM;
4533         }
4534
4535         /* set address to write */
4536         awe_poke_dw(AWE_SMALW, offset);
4537
4538         return 0;
4539 }
4540
4541 /* open DRAM for RAM size detection */
4542 static void
4543 awe_open_dram_for_check(void)
4544 {
4545         int i;
4546         for (i = 0; i < AWE_NORMAL_VOICES; i++) {
4547                 awe_poke(AWE_DCYSUSV(i), 0x80);
4548                 awe_poke_dw(AWE_VTFT(i), 0);
4549                 awe_poke_dw(AWE_CVCF(i), 0);
4550                 awe_poke_dw(AWE_PTRX(i), 0x40000000);
4551                 awe_poke_dw(AWE_CPF(i), 0x40000000);
4552                 awe_poke_dw(AWE_PSST(i), 0);
4553                 awe_poke_dw(AWE_CSL(i), 0);
4554                 if (i & 1) /* DMA write */
4555                         awe_poke_dw(AWE_CCCA(i), 0x06000000);
4556                 else       /* DMA read */
4557                         awe_poke_dw(AWE_CCCA(i), 0x04000000);
4558                 voices[i].state = AWE_ST_DRAM;
4559         }
4560 }
4561
4562
4563 /* close dram access */
4564 static void
4565 awe_close_dram(void)
4566 {
4567         int i;
4568         /* wait until FULL bit in SMAxW register be false */
4569         for (i = 0; i < 10000; i++) {
4570                 if (!(awe_peek_dw(AWE_SMALW) & 0x80000000))
4571                         break;
4572                 awe_wait(10);
4573         }
4574
4575         for (i = 0; i < AWE_NORMAL_VOICES; i++) {
4576                 if (voices[i].state == AWE_ST_DRAM) {
4577                         awe_poke_dw(AWE_CCCA(i), 0);
4578                         awe_poke(AWE_DCYSUSV(i), 0x807F);
4579                         voices[i].state = AWE_ST_OFF;
4580                 }
4581         }
4582 }
4583
4584
4585 /*
4586  * check dram size on AWE board
4587  */
4588
4589 /* any three numbers you like */
4590 #define UNIQUE_ID1      0x1234
4591 #define UNIQUE_ID2      0x4321
4592 #define UNIQUE_ID3      0xABCD
4593
4594 static void __init
4595 awe_check_dram(void)
4596 {
4597         if (awe_present) /* already initialized */
4598                 return;
4599
4600         if (memsize >= 0) { /* given by config file or module option */
4601                 memsize *= 1024; /* convert to Kbytes */
4602                 return;
4603         }
4604
4605         awe_open_dram_for_check();
4606
4607         memsize = 0;
4608
4609         /* set up unique two id numbers */
4610         awe_poke_dw(AWE_SMALW, AWE_DRAM_OFFSET);
4611         awe_poke(AWE_SMLD, UNIQUE_ID1);
4612         awe_poke(AWE_SMLD, UNIQUE_ID2);
4613
4614         while (memsize < AWE_MAX_DRAM_SIZE) {
4615                 awe_wait(5);
4616                 /* read a data on the DRAM start address */
4617                 awe_poke_dw(AWE_SMALR, AWE_DRAM_OFFSET);
4618                 awe_peek(AWE_SMLD); /* discard stale data  */
4619                 if (awe_peek(AWE_SMLD) != UNIQUE_ID1)
4620                         break;
4621                 if (awe_peek(AWE_SMLD) != UNIQUE_ID2)
4622                         break;
4623                 memsize += 512;  /* increment 512kbytes */
4624                 /* Write a unique data on the test address;
4625                  * if the address is out of range, the data is written on
4626                  * 0x200000(=AWE_DRAM_OFFSET).  Then the two id words are
4627                  * broken by this data.
4628                  */
4629                 awe_poke_dw(AWE_SMALW, AWE_DRAM_OFFSET + memsize*512L);
4630                 awe_poke(AWE_SMLD, UNIQUE_ID3);
4631                 awe_wait(5);
4632                 /* read a data on the just written DRAM address */
4633                 awe_poke_dw(AWE_SMALR, AWE_DRAM_OFFSET + memsize*512L);
4634                 awe_peek(AWE_SMLD); /* discard stale data  */
4635                 if (awe_peek(AWE_SMLD) != UNIQUE_ID3)
4636                         break;
4637         }
4638         awe_close_dram();
4639
4640         DEBUG(0,printk("AWE32: %d Kbytes memory detected\n", memsize));
4641
4642         /* convert to Kbytes */
4643         memsize *= 1024;
4644 }
4645
4646
4647 /*----------------------------------------------------------------*/
4648
4649 /*
4650  * chorus and reverb controls; from VV's guide
4651  */
4652
4653 /* 5 parameters for each chorus mode; 3 x 16bit, 2 x 32bit */
4654 static char chorus_defined[AWE_CHORUS_NUMBERS];
4655 static awe_chorus_fx_rec chorus_parm[AWE_CHORUS_NUMBERS] = {
4656         {0xE600, 0x03F6, 0xBC2C ,0x00000000, 0x0000006D}, /* chorus 1 */
4657         {0xE608, 0x031A, 0xBC6E, 0x00000000, 0x0000017C}, /* chorus 2 */
4658         {0xE610, 0x031A, 0xBC84, 0x00000000, 0x00000083}, /* chorus 3 */
4659         {0xE620, 0x0269, 0xBC6E, 0x00000000, 0x0000017C}, /* chorus 4 */
4660         {0xE680, 0x04D3, 0xBCA6, 0x00000000, 0x0000005B}, /* feedback */
4661         {0xE6E0, 0x044E, 0xBC37, 0x00000000, 0x00000026}, /* flanger */
4662         {0xE600, 0x0B06, 0xBC00, 0x0000E000, 0x00000083}, /* short delay */
4663         {0xE6C0, 0x0B06, 0xBC00, 0x0000E000, 0x00000083}, /* short delay + feedback */
4664 };
4665
4666 static int
4667 awe_load_chorus_fx(awe_patch_info *patch, const char __user *addr, int count)
4668 {
4669         if (patch->optarg < AWE_CHORUS_PREDEFINED || patch->optarg >= AWE_CHORUS_NUMBERS) {
4670                 printk(KERN_WARNING "AWE32 Error: invalid chorus mode %d for uploading\n", patch->optarg);
4671                 return -EINVAL;
4672         }
4673         if (count < sizeof(awe_chorus_fx_rec)) {
4674                 printk(KERN_WARNING "AWE32 Error: too short chorus fx parameters\n");
4675                 return -EINVAL;
4676         }
4677         if (copy_from_user(&chorus_parm[patch->optarg], addr + AWE_PATCH_INFO_SIZE,
4678                            sizeof(awe_chorus_fx_rec)))
4679                 return -EFAULT;
4680         chorus_defined[patch->optarg] = TRUE;
4681         return 0;
4682 }
4683
4684 static void
4685 awe_set_chorus_mode(int effect)
4686 {
4687         if (effect < 0 || effect >= AWE_CHORUS_NUMBERS ||
4688             (effect >= AWE_CHORUS_PREDEFINED && !chorus_defined[effect]))
4689                 return;
4690         awe_poke(AWE_INIT3(9), chorus_parm[effect].feedback);
4691         awe_poke(AWE_INIT3(12), chorus_parm[effect].delay_offset);
4692         awe_poke(AWE_INIT4(3), chorus_parm[effect].lfo_depth);
4693         awe_poke_dw(AWE_HWCF4, chorus_parm[effect].delay);
4694         awe_poke_dw(AWE_HWCF5, chorus_parm[effect].lfo_freq);
4695         awe_poke_dw(AWE_HWCF6, 0x8000);
4696         awe_poke_dw(AWE_HWCF7, 0x0000);
4697 }
4698
4699 static void
4700 awe_update_chorus_mode(void)
4701 {
4702         awe_set_chorus_mode(ctrls[AWE_MD_CHORUS_MODE]);
4703 }
4704
4705 /*----------------------------------------------------------------*/
4706
4707 /* reverb mode settings; write the following 28 data of 16 bit length
4708  *   on the corresponding ports in the reverb_cmds array
4709  */
4710 static char reverb_defined[AWE_CHORUS_NUMBERS];
4711 static awe_reverb_fx_rec reverb_parm[AWE_REVERB_NUMBERS] = {
4712 {{  /* room 1 */
4713         0xB488, 0xA450, 0x9550, 0x84B5, 0x383A, 0x3EB5, 0x72F4,
4714         0x72A4, 0x7254, 0x7204, 0x7204, 0x7204, 0x4416, 0x4516,
4715         0xA490, 0xA590, 0x842A, 0x852A, 0x842A, 0x852A, 0x8429,
4716         0x8529, 0x8429, 0x8529, 0x8428, 0x8528, 0x8428, 0x8528,
4717 }},
4718 {{  /* room 2 */
4719         0xB488, 0xA458, 0x9558, 0x84B5, 0x383A, 0x3EB5, 0x7284,
4720         0x7254, 0x7224, 0x7224, 0x7254, 0x7284, 0x4448, 0x4548,
4721         0xA440, 0xA540, 0x842A, 0x852A, 0x842A, 0x852A, 0x8429,
4722         0x8529, 0x8429, 0x8529, 0x8428, 0x8528, 0x8428, 0x8528,
4723 }},
4724 {{  /* room 3 */
4725         0xB488, 0xA460, 0x9560, 0x84B5, 0x383A, 0x3EB5, 0x7284,
4726         0x7254, 0x7224, 0x7224, 0x7254, 0x7284, 0x4416, 0x4516,
4727         0xA490, 0xA590, 0x842C, 0x852C, 0x842C, 0x852C, 0x842B,
4728         0x852B, 0x842B, 0x852B, 0x842A, 0x852A, 0x842A, 0x852A,
4729 }},
4730 {{  /* hall 1 */
4731         0xB488, 0xA470, 0x9570, 0x84B5, 0x383A, 0x3EB5, 0x7284,
4732         0x7254, 0x7224, 0x7224, 0x7254, 0x7284, 0x4448, 0x4548,
4733         0xA440, 0xA540, 0x842B, 0x852B, 0x842B, 0x852B, 0x842A,
4734         0x852A, 0x842A, 0x852A, 0x8429, 0x8529, 0x8429, 0x8529,
4735 }},
4736 {{  /* hall 2 */
4737         0xB488, 0xA470, 0x9570, 0x84B5, 0x383A, 0x3EB5, 0x7254,
4738         0x7234, 0x7224, 0x7254, 0x7264, 0x7294, 0x44C3, 0x45C3,
4739         0xA404, 0xA504, 0x842A, 0x852A, 0x842A, 0x852A, 0x8429,
4740         0x8529, 0x8429, 0x8529, 0x8428, 0x8528, 0x8428, 0x8528,
4741 }},
4742 {{  /* plate */
4743         0xB4FF, 0xA470, 0x9570, 0x84B5, 0x383A, 0x3EB5, 0x7234,
4744         0x7234, 0x7234, 0x7234, 0x7234, 0x7234, 0x4448, 0x4548,
4745         0xA440, 0xA540, 0x842A, 0x852A, 0x842A, 0x852A, 0x8429,
4746         0x8529, 0x8429, 0x8529, 0x8428, 0x8528, 0x8428, 0x8528,
4747 }},
4748 {{  /* delay */
4749         0xB4FF, 0xA470, 0x9500, 0x84B5, 0x333A, 0x39B5, 0x7204,
4750         0x7204, 0x7204, 0x7204, 0x7204, 0x72F4, 0x4400, 0x4500,
4751         0xA4FF, 0xA5FF, 0x8420, 0x8520, 0x8420, 0x8520, 0x8420,
4752         0x8520, 0x8420, 0x8520, 0x8420, 0x8520, 0x8420, 0x8520,
4753 }},
4754 {{  /* panning delay */
4755         0xB4FF, 0xA490, 0x9590, 0x8474, 0x333A, 0x39B5, 0x7204,
4756         0x7204, 0x7204, 0x7204, 0x7204, 0x72F4, 0x4400, 0x4500,
4757         0xA4FF, 0xA5FF, 0x8420, 0x8520, 0x8420, 0x8520, 0x8420,
4758         0x8520, 0x8420, 0x8520, 0x8420, 0x8520, 0x8420, 0x8520,
4759 }},
4760 };
4761
4762 static struct ReverbCmdPair {
4763         unsigned short cmd, port;
4764 } reverb_cmds[28] = {
4765   {AWE_INIT1(0x03)}, {AWE_INIT1(0x05)}, {AWE_INIT4(0x1F)}, {AWE_INIT1(0x07)},
4766   {AWE_INIT2(0x14)}, {AWE_INIT2(0x16)}, {AWE_INIT1(0x0F)}, {AWE_INIT1(0x17)},
4767   {AWE_INIT1(0x1F)}, {AWE_INIT2(0x07)}, {AWE_INIT2(0x0F)}, {AWE_INIT2(0x17)},
4768   {AWE_INIT2(0x1D)}, {AWE_INIT2(0x1F)}, {AWE_INIT3(0x01)}, {AWE_INIT3(0x03)},
4769   {AWE_INIT1(0x09)}, {AWE_INIT1(0x0B)}, {AWE_INIT1(0x11)}, {AWE_INIT1(0x13)},
4770   {AWE_INIT1(0x19)}, {AWE_INIT1(0x1B)}, {AWE_INIT2(0x01)}, {AWE_INIT2(0x03)},
4771   {AWE_INIT2(0x09)}, {AWE_INIT2(0x0B)}, {AWE_INIT2(0x11)}, {AWE_INIT2(0x13)},
4772 };
4773
4774 static int
4775 awe_load_reverb_fx(awe_patch_info *patch, const char __user *addr, int count)
4776 {
4777         if (patch->optarg < AWE_REVERB_PREDEFINED || patch->optarg >= AWE_REVERB_NUMBERS) {
4778                 printk(KERN_WARNING "AWE32 Error: invalid reverb mode %d for uploading\n", patch->optarg);
4779                 return -EINVAL;
4780         }
4781         if (count < sizeof(awe_reverb_fx_rec)) {
4782                 printk(KERN_WARNING "AWE32 Error: too short reverb fx parameters\n");
4783                 return -EINVAL;
4784         }
4785         if (copy_from_user(&reverb_parm[patch->optarg], addr + AWE_PATCH_INFO_SIZE,
4786                            sizeof(awe_reverb_fx_rec)))
4787                 return -EFAULT;
4788         reverb_defined[patch->optarg] = TRUE;
4789         return 0;
4790 }
4791
4792 static void
4793 awe_set_reverb_mode(int effect)
4794 {
4795         int i;
4796         if (effect < 0 || effect >= AWE_REVERB_NUMBERS ||
4797             (effect >= AWE_REVERB_PREDEFINED && !reverb_defined[effect]))
4798                 return;
4799         for (i = 0; i < 28; i++)
4800                 awe_poke(reverb_cmds[i].cmd, reverb_cmds[i].port,
4801                          reverb_parm[effect].parms[i]);
4802 }
4803
4804 static void
4805 awe_update_reverb_mode(void)
4806 {
4807         awe_set_reverb_mode(ctrls[AWE_MD_REVERB_MODE]);
4808 }
4809
4810 /*
4811  * treble/bass equalizer control
4812  */
4813
4814 static unsigned short bass_parm[12][3] = {
4815         {0xD26A, 0xD36A, 0x0000}, /* -12 dB */
4816         {0xD25B, 0xD35B, 0x0000}, /*  -8 */
4817         {0xD24C, 0xD34C, 0x0000}, /*  -6 */
4818         {0xD23D, 0xD33D, 0x0000}, /*  -4 */
4819         {0xD21F, 0xD31F, 0x0000}, /*  -2 */
4820         {0xC208, 0xC308, 0x0001}, /*   0 (HW default) */
4821         {0xC219, 0xC319, 0x0001}, /*  +2 */
4822         {0xC22A, 0xC32A, 0x0001}, /*  +4 */
4823         {0xC24C, 0xC34C, 0x0001}, /*  +6 */
4824         {0xC26E, 0xC36E, 0x0001}, /*  +8 */
4825         {0xC248, 0xC348, 0x0002}, /* +10 */
4826         {0xC26A, 0xC36A, 0x0002}, /* +12 dB */
4827 };
4828
4829 static unsigned short treble_parm[12][9] = {
4830         {0x821E, 0xC26A, 0x031E, 0xC36A, 0x021E, 0xD208, 0x831E, 0xD308, 0x0001}, /* -12 dB */
4831         {0x821E, 0xC25B, 0x031E, 0xC35B, 0x021E, 0xD208, 0x831E, 0xD308, 0x0001},
4832         {0x821E, 0xC24C, 0x031E, 0xC34C, 0x021E, 0xD208, 0x831E, 0xD308, 0x0001},
4833         {0x821E, 0xC23D, 0x031E, 0xC33D, 0x021E, 0xD208, 0x831E, 0xD308, 0x0001},
4834         {0x821E, 0xC21F, 0x031E, 0xC31F, 0x021E, 0xD208, 0x831E, 0xD308, 0x0001},
4835         {0x821E, 0xD208, 0x031E, 0xD308, 0x021E, 0xD208, 0x831E, 0xD308, 0x0002},
4836         {0x821E, 0xD208, 0x031E, 0xD308, 0x021D, 0xD219, 0x831D, 0xD319, 0x0002},
4837         {0x821E, 0xD208, 0x031E, 0xD308, 0x021C, 0xD22A, 0x831C, 0xD32A, 0x0002},
4838         {0x821E, 0xD208, 0x031E, 0xD308, 0x021A, 0xD24C, 0x831A, 0xD34C, 0x0002},
4839         {0x821E, 0xD208, 0x031E, 0xD308, 0x0219, 0xD26E, 0x8319, 0xD36E, 0x0002}, /* +8 (HW default) */
4840         {0x821D, 0xD219, 0x031D, 0xD319, 0x0219, 0xD26E, 0x8319, 0xD36E, 0x0002},
4841         {0x821C, 0xD22A, 0x031C, 0xD32A, 0x0219, 0xD26E, 0x8319, 0xD36E, 0x0002}, /* +12 dB */
4842 };
4843
4844
4845 /*
4846  * set Emu8000 digital equalizer; from 0 to 11 [-12dB - 12dB]
4847  */
4848 static void
4849 awe_equalizer(int bass, int treble)
4850 {
4851         unsigned short w;
4852
4853         if (bass < 0 || bass > 11 || treble < 0 || treble > 11)
4854                 return;
4855         awe_poke(AWE_INIT4(0x01), bass_parm[bass][0]);
4856         awe_poke(AWE_INIT4(0x11), bass_parm[bass][1]);
4857         awe_poke(AWE_INIT3(0x11), treble_parm[treble][0]);
4858         awe_poke(AWE_INIT3(0x13), treble_parm[treble][1]);
4859         awe_poke(AWE_INIT3(0x1B), treble_parm[treble][2]);
4860         awe_poke(AWE_INIT4(0x07), treble_parm[treble][3]);
4861         awe_poke(AWE_INIT4(0x0B), treble_parm[treble][4]);
4862         awe_poke(AWE_INIT4(0x0D), treble_parm[treble][5]);
4863         awe_poke(AWE_INIT4(0x17), treble_parm[treble][6]);
4864         awe_poke(AWE_INIT4(0x19), treble_parm[treble][7]);
4865         w = bass_parm[bass][2] + treble_parm[treble][8];
4866         awe_poke(AWE_INIT4(0x15), (unsigned short)(w + 0x0262));
4867         awe_poke(AWE_INIT4(0x1D), (unsigned short)(w + 0x8362));
4868 }
4869
4870 static void awe_update_equalizer(void)
4871 {
4872         awe_equalizer(ctrls[AWE_MD_BASS_LEVEL], ctrls[AWE_MD_TREBLE_LEVEL]);
4873 }
4874
4875
4876 /*----------------------------------------------------------------*/
4877
4878 #ifdef CONFIG_AWE32_MIDIEMU
4879
4880 /*
4881  * Emu8000 MIDI Emulation
4882  */
4883
4884 /*
4885  * midi queue record
4886  */
4887
4888 /* queue type */
4889 enum { Q_NONE, Q_VARLEN, Q_READ, Q_SYSEX, };
4890
4891 #define MAX_MIDIBUF     64
4892
4893 /* midi status */
4894 typedef struct MidiStatus {
4895         int queue;      /* queue type */
4896         int qlen;       /* queue length */
4897         int read;       /* chars read */
4898         int status;     /* current status */
4899         int chan;       /* current channel */
4900         unsigned char buf[MAX_MIDIBUF];
4901 } MidiStatus;
4902
4903 /* MIDI mode type */
4904 enum { MODE_GM, MODE_GS, MODE_XG, };
4905
4906 /* NRPN / CC -> Emu8000 parameter converter */
4907 typedef struct {
4908         int control;
4909         int awe_effect;
4910         unsigned short (*convert)(int val);
4911 } ConvTable;
4912
4913
4914 /*
4915  * prototypes
4916  */
4917
4918 static int awe_midi_open(int dev, int mode, void (*input)(int,unsigned char), void (*output)(int));
4919 static void awe_midi_close(int dev);
4920 static int awe_midi_ioctl(int dev, unsigned cmd, void __user * arg);
4921 static int awe_midi_outputc(int dev, unsigned char midi_byte);
4922
4923 static void init_midi_status(MidiStatus *st);
4924 static void clear_rpn(void);
4925 static void get_midi_char(MidiStatus *st, int c);
4926 /*static void queue_varlen(MidiStatus *st, int c);*/
4927 static void special_event(MidiStatus *st, int c);
4928 static void queue_read(MidiStatus *st, int c);
4929 static void midi_note_on(MidiStatus *st);
4930 static void midi_note_off(MidiStatus *st);
4931 static void midi_key_pressure(MidiStatus *st);
4932 static void midi_channel_pressure(MidiStatus *st);
4933 static void midi_pitch_wheel(MidiStatus *st);
4934 static void midi_program_change(MidiStatus *st);
4935 static void midi_control_change(MidiStatus *st);
4936 static void midi_select_bank(MidiStatus *st, int val);
4937 static void midi_nrpn_event(MidiStatus *st);
4938 static void midi_rpn_event(MidiStatus *st);
4939 static void midi_detune(int chan, int coarse, int fine);
4940 static void midi_system_exclusive(MidiStatus *st);
4941 static int send_converted_effect(ConvTable *table, int num_tables, MidiStatus *st, int type, int val);
4942 static int add_converted_effect(ConvTable *table, int num_tables, MidiStatus *st, int type, int val);
4943 static int xg_control_change(MidiStatus *st, int cmd, int val);
4944
4945 #define numberof(ary)   (sizeof(ary)/sizeof(ary[0]))
4946
4947
4948 /*
4949  * OSS Midi device record
4950  */
4951
4952 static struct midi_operations awe_midi_operations =
4953 {
4954         .owner          = THIS_MODULE,
4955         .info           = {"AWE Midi Emu", 0, 0, SNDCARD_SB},
4956         .in_info        = {0},
4957         .open           = awe_midi_open, /*open*/
4958         .close          = awe_midi_close, /*close*/
4959         .ioctl          = awe_midi_ioctl, /*ioctl*/
4960         .outputc        = awe_midi_outputc, /*outputc*/
4961 };
4962
4963 static int my_mididev = -1;
4964
4965 static void __init attach_midiemu(void)
4966 {
4967         if ((my_mididev = sound_alloc_mididev()) < 0)
4968                 printk ("Sound: Too many midi devices detected\n");
4969         else
4970                 midi_devs[my_mididev] = &awe_midi_operations;
4971 }
4972
4973 static void unload_midiemu(void)
4974 {
4975         if (my_mididev >= 0)
4976                 sound_unload_mididev(my_mididev);
4977 }
4978
4979
4980 /*
4981  * open/close midi device
4982  */
4983
4984 static int midi_opened = FALSE;
4985
4986 static int midi_mode;
4987 static int coarsetune, finetune;
4988
4989 static int xg_mapping = TRUE;
4990 static int xg_bankmode;
4991
4992 /* effect sensitivity */
4993
4994 #define FX_CUTOFF       0
4995 #define FX_RESONANCE    1
4996 #define FX_ATTACK       2
4997 #define FX_RELEASE      3
4998 #define FX_VIBRATE      4
4999 #define FX_VIBDEPTH     5
5000 #define FX_VIBDELAY     6
5001 #define FX_NUMS         7
5002
5003 #define DEF_FX_CUTOFF           170
5004 #define DEF_FX_RESONANCE        6
5005 #define DEF_FX_ATTACK           50
5006 #define DEF_FX_RELEASE          50
5007 #define DEF_FX_VIBRATE          30
5008 #define DEF_FX_VIBDEPTH         4
5009 #define DEF_FX_VIBDELAY         1500
5010
5011 /* effect sense: */
5012 static int gs_sense[] =
5013 {
5014         DEF_FX_CUTOFF, DEF_FX_RESONANCE, DEF_FX_ATTACK, DEF_FX_RELEASE,
5015         DEF_FX_VIBRATE, DEF_FX_VIBDEPTH, DEF_FX_VIBDELAY
5016 };
5017 static int xg_sense[] =
5018 {
5019         DEF_FX_CUTOFF, DEF_FX_RESONANCE, DEF_FX_ATTACK, DEF_FX_RELEASE,
5020         DEF_FX_VIBRATE, DEF_FX_VIBDEPTH, DEF_FX_VIBDELAY
5021 };
5022
5023
5024 /* current status */
5025 static MidiStatus curst;
5026
5027
5028 static int
5029 awe_midi_open (int dev, int mode,
5030                void (*input)(int,unsigned char),
5031                void (*output)(int))
5032 {
5033         if (midi_opened)
5034                 return -EBUSY;
5035
5036         midi_opened = TRUE;
5037
5038         midi_mode = MODE_GM;
5039
5040         curst.queue = Q_NONE;
5041         curst.qlen = 0;
5042         curst.read = 0;
5043         curst.status = 0;
5044         curst.chan = 0;
5045         memset(curst.buf, 0, sizeof(curst.buf));
5046
5047         init_midi_status(&curst);
5048
5049         return 0;
5050 }
5051
5052 static void
5053 awe_midi_close (int dev)
5054 {
5055         midi_opened = FALSE;
5056 }
5057
5058
5059 static int
5060 awe_midi_ioctl (int dev, unsigned cmd, void __user *arg)
5061 {
5062         return -EPERM;
5063 }
5064
5065 static int
5066 awe_midi_outputc (int dev, unsigned char midi_byte)
5067 {
5068         if (! midi_opened)
5069                 return 1;
5070
5071         /* force to change playing mode */
5072         playing_mode = AWE_PLAY_MULTI;
5073
5074         get_midi_char(&curst, midi_byte);
5075         return 1;
5076 }
5077
5078
5079 /*
5080  * initialize
5081  */
5082
5083 static void init_midi_status(MidiStatus *st)
5084 {
5085         clear_rpn();
5086         coarsetune = 0;
5087         finetune = 0;
5088 }
5089
5090
5091 /*
5092  * RPN & NRPN
5093  */
5094
5095 #define MAX_MIDI_CHANNELS       16
5096
5097 /* RPN & NRPN */
5098 static unsigned char nrpn[MAX_MIDI_CHANNELS];  /* current event is NRPN? */
5099 static int msb_bit;  /* current event is msb for RPN/NRPN */
5100 /* RPN & NRPN indeces */
5101 static unsigned char rpn_msb[MAX_MIDI_CHANNELS], rpn_lsb[MAX_MIDI_CHANNELS];
5102 /* RPN & NRPN values */
5103 static int rpn_val[MAX_MIDI_CHANNELS];
5104
5105 static void clear_rpn(void)
5106 {
5107         int i;
5108         for (i = 0; i < MAX_MIDI_CHANNELS; i++) {
5109                 nrpn[i] = 0;
5110                 rpn_msb[i] = 127;
5111                 rpn_lsb[i] = 127;
5112                 rpn_val[i] = 0;
5113         }
5114         msb_bit = 0;
5115 }
5116
5117
5118 /*
5119  * process midi queue
5120  */
5121
5122 /* status event types */
5123 typedef void (*StatusEvent)(MidiStatus *st);
5124 static struct StatusEventList {
5125         StatusEvent process;
5126         int qlen;
5127 } status_event[8] = {
5128         {midi_note_off, 2},
5129         {midi_note_on, 2},
5130         {midi_key_pressure, 2},
5131         {midi_control_change, 2},
5132         {midi_program_change, 1},
5133         {midi_channel_pressure, 1},
5134         {midi_pitch_wheel, 2},
5135         {NULL, 0},
5136 };
5137
5138
5139 /* read a char from fifo and process it */
5140 static void get_midi_char(MidiStatus *st, int c)
5141 {
5142         if (c == 0xfe) {
5143                 /* ignore active sense */
5144                 st->queue = Q_NONE;
5145                 return;
5146         }
5147
5148         switch (st->queue) {
5149         /* case Q_VARLEN: queue_varlen(st, c); break;*/
5150         case Q_READ:
5151         case Q_SYSEX:
5152                 queue_read(st, c);
5153                 break;
5154         case Q_NONE:
5155                 st->read = 0;
5156                 if ((c & 0xf0) == 0xf0) {
5157                         special_event(st, c);
5158                 } else if (c & 0x80) { /* status change */
5159                         st->status = (c >> 4) & 0x07;
5160                         st->chan = c & 0x0f;
5161                         st->queue = Q_READ;
5162                         st->qlen = status_event[st->status].qlen;
5163                         if (st->qlen == 0)
5164                                 st->queue = Q_NONE;
5165                 }
5166                 break;
5167         }
5168 }
5169
5170 /* 0xfx events */
5171 static void special_event(MidiStatus *st, int c)
5172 {
5173         switch (c) {
5174         case 0xf0: /* system exclusive */
5175                 st->queue = Q_SYSEX;
5176                 st->qlen = 0;
5177                 break;
5178         case 0xf1: /* MTC quarter frame */
5179         case 0xf3: /* song select */
5180                 st->queue = Q_READ;
5181                 st->qlen = 1;
5182                 break;
5183         case 0xf2: /* song position */
5184                 st->queue = Q_READ;
5185                 st->qlen = 2;
5186                 break;
5187         }
5188 }
5189
5190 #if 0
5191 /* read variable length value */
5192 static void queue_varlen(MidiStatus *st, int c)
5193 {
5194         st->qlen += (c & 0x7f);
5195         if (c & 0x80) {
5196                 st->qlen <<= 7;
5197                 return;
5198         }
5199         if (st->qlen <= 0) {
5200                 st->qlen = 0;
5201                 st->queue = Q_NONE;
5202         }
5203         st->queue = Q_READ;
5204         st->read = 0;
5205 }
5206 #endif
5207
5208
5209 /* read a char */
5210 static void queue_read(MidiStatus *st, int c)
5211 {
5212         if (st->read < MAX_MIDIBUF) {
5213                 if (st->queue != Q_SYSEX)
5214                         c &= 0x7f;
5215                 st->buf[st->read] = (unsigned char)c;
5216         }
5217         st->read++;
5218         if (st->queue == Q_SYSEX && c == 0xf7) {
5219                 midi_system_exclusive(st);
5220                 st->queue = Q_NONE;
5221         } else if (st->queue == Q_READ && st->read >= st->qlen) {
5222                 if (status_event[st->status].process)
5223                         status_event[st->status].process(st);
5224                 st->queue = Q_NONE;
5225         }
5226 }
5227
5228
5229 /*
5230  * status events
5231  */
5232
5233 /* note on */
5234 static void midi_note_on(MidiStatus *st)
5235 {
5236         DEBUG(2,printk("midi: note_on (%d) %d %d\n", st->chan, st->buf[0], st->buf[1]));
5237         if (st->buf[1] == 0)
5238                 midi_note_off(st);
5239         else
5240                 awe_start_note(0, st->chan, st->buf[0], st->buf[1]);
5241 }
5242
5243 /* note off */
5244 static void midi_note_off(MidiStatus *st)
5245 {
5246         DEBUG(2,printk("midi: note_off (%d) %d %d\n", st->chan, st->buf[0], st->buf[1]));
5247         awe_kill_note(0, st->chan, st->buf[0], st->buf[1]);
5248 }
5249
5250 /* key pressure change */
5251 static void midi_key_pressure(MidiStatus *st)
5252 {
5253         awe_key_pressure(0, st->chan, st->buf[0], st->buf[1]);
5254 }
5255
5256 /* channel pressure change */
5257 static void midi_channel_pressure(MidiStatus *st)
5258 {
5259         channels[st->chan].chan_press = st->buf[0];
5260         awe_modwheel_change(st->chan, st->buf[0]);
5261 }
5262
5263 /* pitch wheel change */
5264 static void midi_pitch_wheel(MidiStatus *st)
5265 {
5266         int val = (int)st->buf[1] * 128 + st->buf[0];
5267         awe_bender(0, st->chan, val);
5268 }
5269
5270 /* program change */
5271 static void midi_program_change(MidiStatus *st)
5272 {
5273         int preset;
5274         preset = st->buf[0];
5275         if (midi_mode == MODE_GS && IS_DRUM_CHANNEL(st->chan) && preset == 127)
5276                 preset = 0;
5277         else if (midi_mode == MODE_XG && xg_mapping && IS_DRUM_CHANNEL(st->chan))
5278                 preset += 64;
5279
5280         awe_set_instr(0, st->chan, preset);
5281 }
5282
5283 #define send_effect(chan,type,val) awe_send_effect(chan,-1,type,val)
5284 #define add_effect(chan,type,val) awe_send_effect(chan,-1,(type)|0x80,val)
5285 #define unset_effect(chan,type) awe_send_effect(chan,-1,(type)|0x40,0)
5286
5287 /* midi control change */
5288 static void midi_control_change(MidiStatus *st)
5289 {
5290         int cmd = st->buf[0];
5291         int val = st->buf[1];
5292
5293         DEBUG(2,printk("midi: control (%d) %d %d\n", st->chan, cmd, val));
5294         if (midi_mode == MODE_XG) {
5295                 if (xg_control_change(st, cmd, val))
5296                         return;
5297         }
5298
5299         /* controls #31 - #64 are LSB of #0 - #31 */
5300         msb_bit = 1;
5301         if (cmd >= 0x20 && cmd < 0x40) {
5302                 msb_bit = 0;
5303                 cmd -= 0x20;
5304         }
5305
5306         switch (cmd) {
5307         case CTL_SOFT_PEDAL:
5308                 if (val == 127)
5309                         add_effect(st->chan, AWE_FX_CUTOFF, -160);
5310                 else
5311                         unset_effect(st->chan, AWE_FX_CUTOFF);
5312                 break;
5313
5314         case CTL_BANK_SELECT:
5315                 midi_select_bank(st, val);
5316                 break;
5317
5318         /* set RPN/NRPN parameter */
5319         case CTL_REGIST_PARM_NUM_MSB:
5320                 nrpn[st->chan]=0; rpn_msb[st->chan]=val;
5321                 break;
5322         case CTL_REGIST_PARM_NUM_LSB:
5323                 nrpn[st->chan]=0; rpn_lsb[st->chan]=val;
5324                 break;
5325         case CTL_NONREG_PARM_NUM_MSB:
5326                 nrpn[st->chan]=1; rpn_msb[st->chan]=val;
5327                 break;
5328         case CTL_NONREG_PARM_NUM_LSB:
5329                 nrpn[st->chan]=1; rpn_lsb[st->chan]=val;
5330                 break;
5331
5332         /* send RPN/NRPN entry */
5333         case CTL_DATA_ENTRY:
5334                 if (msb_bit)
5335                         rpn_val[st->chan] = val * 128;
5336                 else
5337                         rpn_val[st->chan] |= val;
5338                 if (nrpn[st->chan])
5339                         midi_nrpn_event(st);
5340                 else
5341                         midi_rpn_event(st);
5342                 break;
5343
5344         /* increase/decrease data entry */
5345         case CTL_DATA_INCREMENT:
5346                 rpn_val[st->chan]++;
5347                 midi_rpn_event(st);
5348                 break;
5349         case CTL_DATA_DECREMENT:
5350                 rpn_val[st->chan]--;
5351                 midi_rpn_event(st);
5352                 break;
5353
5354         /* default */
5355         default:
5356                 awe_controller(0, st->chan, cmd, val);
5357                 break;
5358         }
5359 }
5360
5361 /* tone bank change */
5362 static void midi_select_bank(MidiStatus *st, int val)
5363 {
5364         if (midi_mode == MODE_XG && msb_bit) {
5365                 xg_bankmode = val;
5366                 /* XG MSB value; not normal bank selection */
5367                 switch (val) {
5368                 case 127: /* remap to drum channel */
5369                         awe_controller(0, st->chan, CTL_BANK_SELECT, 128);
5370                         break;
5371                 default: /* remap to normal channel */
5372                         awe_controller(0, st->chan, CTL_BANK_SELECT, val);
5373                         break;
5374                 }
5375                 return;
5376         } else if (midi_mode == MODE_GS && !msb_bit)
5377                 /* ignore LSB bank in GS mode (used for mapping) */
5378                 return;
5379
5380         /* normal bank controls; accept both MSB and LSB */
5381         if (! IS_DRUM_CHANNEL(st->chan)) {
5382                 if (midi_mode == MODE_XG) {
5383                         if (xg_bankmode) return;
5384                         if (val == 64 || val == 126)
5385                                 val = 0;
5386                 } else if (midi_mode == MODE_GS && val == 127)
5387                         val = 0;
5388                 awe_controller(0, st->chan, CTL_BANK_SELECT, val);
5389         }
5390 }
5391
5392
5393 /*
5394  * RPN events
5395  */
5396
5397 static void midi_rpn_event(MidiStatus *st)
5398 {
5399         int type;
5400         type = (rpn_msb[st->chan]<<8) | rpn_lsb[st->chan];
5401         switch (type) {
5402         case 0x0000: /* Pitch bend sensitivity */
5403                 /* MSB only / 1 semitone per 128 */
5404                 if (msb_bit) {
5405                         channels[st->chan].bender_range =
5406                                 rpn_val[st->chan] * 100 / 128;
5407                 }
5408                 break;
5409
5410         case 0x0001: /* fine tuning: */
5411                 /* MSB/LSB, 8192=center, 100/8192 cent step */
5412                 finetune = rpn_val[st->chan] - 8192;
5413                 midi_detune(st->chan, coarsetune, finetune);
5414                 break;
5415
5416         case 0x0002: /* coarse tuning */
5417                 /* MSB only / 8192=center, 1 semitone per 128 */
5418                 if (msb_bit) {
5419                         coarsetune = rpn_val[st->chan] - 8192;
5420                         midi_detune(st->chan, coarsetune, finetune);
5421                 }
5422                 break;
5423
5424         case 0x7F7F: /* "lock-in" RPN */
5425                 break;
5426         }
5427 }
5428
5429
5430 /* tuning:
5431  *   coarse = -8192 to 8192 (100 cent per 128)
5432  *   fine = -8192 to 8192 (max=100cent)
5433  */
5434 static void midi_detune(int chan, int coarse, int fine)
5435 {
5436         /* 4096 = 1200 cents in AWE parameter */
5437         int val;
5438         val = coarse * 4096 / (12 * 128);
5439         val += fine / 24;
5440         if (val)
5441                 send_effect(chan, AWE_FX_INIT_PITCH, val);
5442         else
5443                 unset_effect(chan, AWE_FX_INIT_PITCH);
5444 }
5445
5446
5447 /*
5448  * system exclusive message
5449  * GM/GS/XG macros are accepted
5450  */
5451
5452 static void midi_system_exclusive(MidiStatus *st)
5453 {
5454         /* GM on */
5455         static unsigned char gm_on_macro[] = {
5456                 0x7e,0x7f,0x09,0x01,
5457         };
5458         /* XG on */
5459         static unsigned char xg_on_macro[] = {
5460                 0x43,0x10,0x4c,0x00,0x00,0x7e,0x00,
5461         };
5462         /* GS prefix
5463          * drum channel: XX=0x1?(channel), YY=0x15, ZZ=on/off
5464          * reverb mode: XX=0x01, YY=0x30, ZZ=0-7
5465          * chorus mode: XX=0x01, YY=0x38, ZZ=0-7
5466          */
5467         static unsigned char gs_pfx_macro[] = {
5468                 0x41,0x10,0x42,0x12,0x40,/*XX,YY,ZZ*/
5469         };
5470
5471 #if 0
5472         /* SC88 system mode set
5473          * single module mode: XX=1
5474          * double module mode: XX=0
5475          */
5476         static unsigned char gs_mode_macro[] = {
5477                 0x41,0x10,0x42,0x12,0x00,0x00,0x7F,/*ZZ*/
5478         };
5479         /* SC88 display macro: XX=01:bitmap, 00:text
5480          */
5481         static unsigned char gs_disp_macro[] = {
5482                 0x41,0x10,0x45,0x12,0x10,/*XX,00*/
5483         };
5484 #endif
5485
5486         /* GM on */
5487         if (memcmp(st->buf, gm_on_macro, sizeof(gm_on_macro)) == 0) {
5488                 if (midi_mode != MODE_GS && midi_mode != MODE_XG)
5489                         midi_mode = MODE_GM;
5490                 init_midi_status(st);
5491         }
5492
5493         /* GS macros */
5494         else if (memcmp(st->buf, gs_pfx_macro, sizeof(gs_pfx_macro)) == 0) {
5495                 if (midi_mode != MODE_GS && midi_mode != MODE_XG)
5496                         midi_mode = MODE_GS;
5497
5498                 if (st->buf[5] == 0x00 && st->buf[6] == 0x7f && st->buf[7] == 0x00) {
5499                         /* GS reset */
5500                         init_midi_status(st);
5501                 }
5502
5503                 else if ((st->buf[5] & 0xf0) == 0x10 && st->buf[6] == 0x15) {
5504                         /* drum pattern */
5505                         int p = st->buf[5] & 0x0f;
5506                         if (p == 0) p = 9;
5507                         else if (p < 10) p--;
5508                         if (st->buf[7] == 0)
5509                                 DRUM_CHANNEL_OFF(p);
5510                         else
5511                                 DRUM_CHANNEL_ON(p);
5512
5513                 } else if ((st->buf[5] & 0xf0) == 0x10 && st->buf[6] == 0x21) {
5514                         /* program */
5515                         int p = st->buf[5] & 0x0f;
5516                         if (p == 0) p = 9;
5517                         else if (p < 10) p--;
5518                         if (! IS_DRUM_CHANNEL(p))
5519                                 awe_set_instr(0, p, st->buf[7]);
5520
5521                 } else if (st->buf[5] == 0x01 && st->buf[6] == 0x30) {
5522                         /* reverb mode */
5523                         awe_set_reverb_mode(st->buf[7]);
5524
5525                 } else if (st->buf[5] == 0x01 && st->buf[6] == 0x38) {
5526                         /* chorus mode */
5527                         awe_set_chorus_mode(st->buf[7]);
5528
5529                 } else if (st->buf[5] == 0x00 && st->buf[6] == 0x04) {
5530                         /* master volume */
5531                         awe_change_master_volume(st->buf[7]);
5532
5533                 }
5534         }
5535
5536         /* XG on */
5537         else if (memcmp(st->buf, xg_on_macro, sizeof(xg_on_macro)) == 0) {
5538                 midi_mode = MODE_XG;
5539                 xg_mapping = TRUE;
5540                 xg_bankmode = 0;
5541         }
5542 }
5543
5544
5545 /*----------------------------------------------------------------*/
5546
5547 /*
5548  * convert NRPN/control values
5549  */
5550
5551 static int send_converted_effect(ConvTable *table, int num_tables, MidiStatus *st, int type, int val)
5552 {
5553         int i, cval;
5554         for (i = 0; i < num_tables; i++) {
5555                 if (table[i].control == type) {
5556                         cval = table[i].convert(val);
5557                         send_effect(st->chan, table[i].awe_effect, cval);
5558                         return TRUE;
5559                 }
5560         }
5561         return FALSE;
5562 }
5563
5564 static int add_converted_effect(ConvTable *table, int num_tables, MidiStatus *st, int type, int val)
5565 {
5566         int i, cval;
5567         for (i = 0; i < num_tables; i++) {
5568                 if (table[i].control == type) {
5569                         cval = table[i].convert(val);
5570                         add_effect(st->chan, table[i].awe_effect|0x80, cval);
5571                         return TRUE;
5572                 }
5573         }
5574         return FALSE;
5575 }
5576
5577
5578 /*
5579  * AWE32 NRPN effects
5580  */
5581
5582 static unsigned short fx_delay(int val);
5583 static unsigned short fx_attack(int val);
5584 static unsigned short fx_hold(int val);
5585 static unsigned short fx_decay(int val);
5586 static unsigned short fx_the_value(int val);
5587 static unsigned short fx_twice_value(int val);
5588 static unsigned short fx_conv_pitch(int val);
5589 static unsigned short fx_conv_Q(int val);
5590
5591 /* function for each NRPN */            /* [range]  units */
5592 #define fx_env1_delay   fx_delay        /* [0,5900] 4msec */
5593 #define fx_env1_attack  fx_attack       /* [0,5940] 1msec */
5594 #define fx_env1_hold    fx_hold         /* [0,8191] 1msec */
5595 #define fx_env1_decay   fx_decay        /* [0,5940] 4msec */
5596 #define fx_env1_release fx_decay        /* [0,5940] 4msec */
5597 #define fx_env1_sustain fx_the_value    /* [0,127] 0.75dB */
5598 #define fx_env1_pitch   fx_the_value    /* [-127,127] 9.375cents */
5599 #define fx_env1_cutoff  fx_the_value    /* [-127,127] 56.25cents */
5600
5601 #define fx_env2_delay   fx_delay        /* [0,5900] 4msec */
5602 #define fx_env2_attack  fx_attack       /* [0,5940] 1msec */
5603 #define fx_env2_hold    fx_hold         /* [0,8191] 1msec */
5604 #define fx_env2_decay   fx_decay        /* [0,5940] 4msec */
5605 #define fx_env2_release fx_decay        /* [0,5940] 4msec */
5606 #define fx_env2_sustain fx_the_value    /* [0,127] 0.75dB */
5607
5608 #define fx_lfo1_delay   fx_delay        /* [0,5900] 4msec */
5609 #define fx_lfo1_freq    fx_twice_value  /* [0,127] 84mHz */
5610 #define fx_lfo1_volume  fx_twice_value  /* [0,127] 0.1875dB */
5611 #define fx_lfo1_pitch   fx_the_value    /* [-127,127] 9.375cents */
5612 #define fx_lfo1_cutoff  fx_twice_value  /* [-64,63] 56.25cents */
5613
5614 #define fx_lfo2_delay   fx_delay        /* [0,5900] 4msec */
5615 #define fx_lfo2_freq    fx_twice_value  /* [0,127] 84mHz */
5616 #define fx_lfo2_pitch   fx_the_value    /* [-127,127] 9.375cents */
5617
5618 #define fx_init_pitch   fx_conv_pitch   /* [-8192,8192] cents */
5619 #define fx_chorus       fx_the_value    /* [0,255] -- */
5620 #define fx_reverb       fx_the_value    /* [0,255] -- */
5621 #define fx_cutoff       fx_twice_value  /* [0,127] 62Hz */
5622 #define fx_filterQ      fx_conv_Q       /* [0,127] -- */
5623
5624 static unsigned short fx_delay(int val)
5625 {
5626         return (unsigned short)calc_parm_delay(val);
5627 }
5628
5629 static unsigned short fx_attack(int val)
5630 {
5631         return (unsigned short)calc_parm_attack(val);
5632 }
5633
5634 static unsigned short fx_hold(int val)
5635 {
5636         return (unsigned short)calc_parm_hold(val);
5637 }
5638
5639 static unsigned short fx_decay(int val)
5640 {
5641         return (unsigned short)calc_parm_decay(val);
5642 }
5643
5644 static unsigned short fx_the_value(int val)
5645 {
5646         return (unsigned short)(val & 0xff);
5647 }
5648
5649 static unsigned short fx_twice_value(int val)
5650 {
5651         return (unsigned short)((val * 2) & 0xff);
5652 }
5653
5654 static unsigned short fx_conv_pitch(int val)
5655 {
5656         return (short)(val * 4096 / 1200);
5657 }
5658
5659 static unsigned short fx_conv_Q(int val)
5660 {
5661         return (unsigned short)((val / 8) & 0xff);
5662 }
5663
5664
5665 static ConvTable awe_effects[] =
5666 {
5667         { 0, AWE_FX_LFO1_DELAY, fx_lfo1_delay},
5668         { 1, AWE_FX_LFO1_FREQ,  fx_lfo1_freq},
5669         { 2, AWE_FX_LFO2_DELAY, fx_lfo2_delay},
5670         { 3, AWE_FX_LFO2_FREQ,  fx_lfo2_freq},
5671
5672         { 4, AWE_FX_ENV1_DELAY, fx_env1_delay},
5673         { 5, AWE_FX_ENV1_ATTACK,fx_env1_attack},
5674         { 6, AWE_FX_ENV1_HOLD,  fx_env1_hold},
5675         { 7, AWE_FX_ENV1_DECAY, fx_env1_decay},
5676         { 8, AWE_FX_ENV1_SUSTAIN,       fx_env1_sustain},
5677         { 9, AWE_FX_ENV1_RELEASE,       fx_env1_release},
5678
5679         {10, AWE_FX_ENV2_DELAY, fx_env2_delay},
5680         {11, AWE_FX_ENV2_ATTACK,        fx_env2_attack},
5681         {12, AWE_FX_ENV2_HOLD,  fx_env2_hold},
5682         {13, AWE_FX_ENV2_DECAY, fx_env2_decay},
5683         {14, AWE_FX_ENV2_SUSTAIN,       fx_env2_sustain},
5684         {15, AWE_FX_ENV2_RELEASE,       fx_env2_release},
5685
5686         {16, AWE_FX_INIT_PITCH, fx_init_pitch},
5687         {17, AWE_FX_LFO1_PITCH, fx_lfo1_pitch},
5688         {18, AWE_FX_LFO2_PITCH, fx_lfo2_pitch},
5689         {19, AWE_FX_ENV1_PITCH, fx_env1_pitch},
5690         {20, AWE_FX_LFO1_VOLUME,        fx_lfo1_volume},
5691         {21, AWE_FX_CUTOFF,             fx_cutoff},
5692         {22, AWE_FX_FILTERQ,    fx_filterQ},
5693         {23, AWE_FX_LFO1_CUTOFF,        fx_lfo1_cutoff},
5694         {24, AWE_FX_ENV1_CUTOFF,        fx_env1_cutoff},
5695         {25, AWE_FX_CHORUS,             fx_chorus},
5696         {26, AWE_FX_REVERB,             fx_reverb},
5697 };
5698
5699 static int num_awe_effects = numberof(awe_effects);
5700
5701
5702 /*
5703  * GS(SC88) NRPN effects; still experimental
5704  */
5705
5706 /* cutoff: quarter semitone step, max=255 */
5707 static unsigned short gs_cutoff(int val)
5708 {
5709         return (val - 64) * gs_sense[FX_CUTOFF] / 50;
5710 }
5711
5712 /* resonance: 0 to 15(max) */
5713 static unsigned short gs_filterQ(int val)
5714 {
5715         return (val - 64) * gs_sense[FX_RESONANCE] / 50;
5716 }
5717
5718 /* attack: */
5719 static unsigned short gs_attack(int val)
5720 {
5721         return -(val - 64) * gs_sense[FX_ATTACK] / 50;
5722 }
5723
5724 /* decay: */
5725 static unsigned short gs_decay(int val)
5726 {
5727         return -(val - 64) * gs_sense[FX_RELEASE] / 50;
5728 }
5729
5730 /* release: */
5731 static unsigned short gs_release(int val)
5732 {
5733         return -(val - 64) * gs_sense[FX_RELEASE] / 50;
5734 }
5735
5736 /* vibrato freq: 0.042Hz step, max=255 */
5737 static unsigned short gs_vib_rate(int val)
5738 {
5739         return (val - 64) * gs_sense[FX_VIBRATE] / 50;
5740 }
5741
5742 /* vibrato depth: max=127, 1 octave */
5743 static unsigned short gs_vib_depth(int val)
5744 {
5745         return (val - 64) * gs_sense[FX_VIBDEPTH] / 50;
5746 }
5747
5748 /* vibrato delay: -0.725msec step */
5749 static unsigned short gs_vib_delay(int val)
5750 {
5751         return -(val - 64) * gs_sense[FX_VIBDELAY] / 50;
5752 }
5753
5754 static ConvTable gs_effects[] =
5755 {
5756         {32, AWE_FX_CUTOFF,     gs_cutoff},
5757         {33, AWE_FX_FILTERQ,    gs_filterQ},
5758         {99, AWE_FX_ENV2_ATTACK, gs_attack},
5759         {100, AWE_FX_ENV2_DECAY, gs_decay},
5760         {102, AWE_FX_ENV2_RELEASE, gs_release},
5761         {8, AWE_FX_LFO1_FREQ, gs_vib_rate},
5762         {9, AWE_FX_LFO1_VOLUME, gs_vib_depth},
5763         {10, AWE_FX_LFO1_DELAY, gs_vib_delay},
5764 };
5765
5766 static int num_gs_effects = numberof(gs_effects);
5767
5768
5769 /*
5770  * NRPN events: accept as AWE32/SC88 specific controls
5771  */
5772
5773 static void midi_nrpn_event(MidiStatus *st)
5774 {
5775         if (rpn_msb[st->chan] == 127 && rpn_lsb[st->chan] <= 26) {
5776                 if (! msb_bit) /* both MSB/LSB necessary */
5777                         send_converted_effect(awe_effects, num_awe_effects,
5778                                               st, rpn_lsb[st->chan],
5779                                               rpn_val[st->chan] - 8192);
5780         } else if (rpn_msb[st->chan] == 1) {
5781                 if (msb_bit) /* only MSB is valid */
5782                         add_converted_effect(gs_effects, num_gs_effects,
5783                                              st, rpn_lsb[st->chan],
5784                                              rpn_val[st->chan] / 128);
5785         }
5786 }
5787
5788
5789 /*
5790  * XG control effects; still experimental
5791  */
5792
5793 /* cutoff: quarter semitone step, max=255 */
5794 static unsigned short xg_cutoff(int val)
5795 {
5796         return (val - 64) * xg_sense[FX_CUTOFF] / 64;
5797 }
5798
5799 /* resonance: 0(open) to 15(most nasal) */
5800 static unsigned short xg_filterQ(int val)
5801 {
5802         return (val - 64) * xg_sense[FX_RESONANCE] / 64;
5803 }
5804
5805 /* attack: */
5806 static unsigned short xg_attack(int val)
5807 {
5808         return -(val - 64) * xg_sense[FX_ATTACK] / 64;
5809 }
5810
5811 /* release: */
5812 static unsigned short xg_release(int val)
5813 {
5814         return -(val - 64) * xg_sense[FX_RELEASE] / 64;
5815 }
5816
5817 static ConvTable xg_effects[] =
5818 {
5819         {71, AWE_FX_CUTOFF,     xg_cutoff},
5820         {74, AWE_FX_FILTERQ,    xg_filterQ},
5821         {72, AWE_FX_ENV2_RELEASE, xg_release},
5822         {73, AWE_FX_ENV2_ATTACK, xg_attack},
5823 };
5824
5825 static int num_xg_effects = numberof(xg_effects);
5826
5827 static int xg_control_change(MidiStatus *st, int cmd, int val)
5828 {
5829         return add_converted_effect(xg_effects, num_xg_effects, st, cmd, val);
5830 }
5831
5832 #endif /* CONFIG_AWE32_MIDIEMU */
5833
5834
5835 /*----------------------------------------------------------------*/
5836
5837
5838 /*
5839  * initialization of AWE driver
5840  */
5841
5842 static void
5843 awe_initialize(void)
5844 {
5845         DEBUG(0,printk("AWE32: initializing..\n"));
5846
5847         /* initialize hardware configuration */
5848         awe_poke(AWE_HWCF1, 0x0059);
5849         awe_poke(AWE_HWCF2, 0x0020);
5850
5851         /* disable audio; this seems to reduce a clicking noise a bit.. */
5852         awe_poke(AWE_HWCF3, 0);
5853
5854         /* initialize audio channels */
5855         awe_init_audio();
5856
5857         /* initialize DMA */
5858         awe_init_dma();
5859
5860         /* initialize init array */
5861         awe_init_array();
5862
5863         /* check DRAM memory size */
5864         awe_check_dram();
5865
5866         /* initialize the FM section of the AWE32 */
5867         awe_init_fm();
5868
5869         /* set up voice envelopes */
5870         awe_tweak();
5871
5872         /* enable audio */
5873         awe_poke(AWE_HWCF3, 0x0004);
5874
5875         /* set default values */
5876         awe_init_ctrl_parms(TRUE);
5877
5878         /* set equalizer */
5879         awe_update_equalizer();
5880
5881         /* set reverb & chorus modes */
5882         awe_update_reverb_mode();
5883         awe_update_chorus_mode();
5884 }
5885
5886
5887 /*
5888  * Core Device Management Functions
5889  */
5890
5891 /* store values to i/o port array */
5892 static void setup_ports(int port1, int port2, int port3)
5893 {
5894         awe_ports[0] = port1;
5895         if (port2 == 0)
5896                 port2 = port1 + 0x400;
5897         awe_ports[1] = port2;
5898         awe_ports[2] = port2 + 2;
5899         if (port3 == 0)
5900                 port3 = port1 + 0x800;
5901         awe_ports[3] = port3;
5902         awe_ports[4] = port3 + 2;
5903
5904         port_setuped = TRUE;
5905 }
5906
5907 /*
5908  * port request
5909  *  0x620-623, 0xA20-A23, 0xE20-E23
5910  */
5911
5912 static int
5913 awe_request_region(void)
5914 {
5915         if (! port_setuped)
5916                 return 0;
5917         if (! request_region(awe_ports[0], 4, "sound driver (AWE32)"))
5918                 return 0;
5919         if (! request_region(awe_ports[1], 4, "sound driver (AWE32)"))
5920                 goto err_out;
5921         if (! request_region(awe_ports[3], 4, "sound driver (AWE32)"))
5922                 goto err_out1;
5923         return 1;
5924 err_out1:
5925         release_region(awe_ports[1], 4);
5926 err_out:
5927         release_region(awe_ports[0], 4);
5928         return 0;
5929 }
5930
5931 static void
5932 awe_release_region(void)
5933 {
5934         if (! port_setuped) return;
5935         release_region(awe_ports[0], 4);
5936         release_region(awe_ports[1], 4);
5937         release_region(awe_ports[3], 4);
5938 }
5939
5940 static int awe_attach_device(void)
5941 {
5942         if (awe_present) return 0; /* for OSS38.. called twice? */
5943
5944         /* reserve I/O ports for awedrv */
5945         if (! awe_request_region()) {
5946                 printk(KERN_ERR "AWE32: I/O area already used.\n");
5947                 return 0;
5948         }
5949
5950         /* set buffers to NULL */
5951         sfhead = sftail = NULL;
5952
5953         my_dev = sound_alloc_synthdev();
5954         if (my_dev == -1) {
5955                 printk(KERN_ERR "AWE32 Error: too many synthesizers\n");
5956                 awe_release_region();
5957                 return 0;
5958         }
5959
5960         voice_alloc = &awe_operations.alloc;
5961         voice_alloc->max_voice = awe_max_voices;
5962         synth_devs[my_dev] = &awe_operations;
5963
5964 #ifdef CONFIG_AWE32_MIXER
5965         attach_mixer();
5966 #endif
5967 #ifdef CONFIG_AWE32_MIDIEMU
5968         attach_midiemu();
5969 #endif
5970
5971         /* clear all samples */
5972         awe_reset_samples();
5973
5974         /* initialize AWE32 hardware */
5975         awe_initialize();
5976
5977         sprintf(awe_info.name, "AWE32-%s (RAM%dk)",
5978                 AWEDRV_VERSION, memsize/1024);
5979         printk(KERN_INFO "<SoundBlaster EMU8000 (RAM%dk)>\n", memsize/1024);
5980
5981         awe_present = TRUE;
5982
5983         return 1;
5984 }
5985
5986 static void awe_dettach_device(void)
5987 {
5988         if (awe_present) {
5989                 awe_reset_samples();
5990                 awe_release_region();
5991                 free_tables();
5992 #ifdef CONFIG_AWE32_MIXER
5993                 unload_mixer();
5994 #endif
5995 #ifdef CONFIG_AWE32_MIDIEMU
5996                 unload_midiemu();
5997 #endif
5998                 sound_unload_synthdev(my_dev);
5999                 awe_present = FALSE;
6000         }
6001 }
6002
6003
6004 /*
6005  * Legacy device Probing
6006  */
6007
6008 /* detect emu8000 chip on the specified address; from VV's guide */
6009
6010 static int __init
6011 awe_detect_base(int addr)
6012 {
6013         setup_ports(addr, 0, 0);
6014         if ((awe_peek(AWE_U1) & 0x000F) != 0x000C)
6015                 return 0;
6016         if ((awe_peek(AWE_HWCF1) & 0x007E) != 0x0058)
6017                 return 0;
6018         if ((awe_peek(AWE_HWCF2) & 0x0003) != 0x0003)
6019                 return 0;
6020         DEBUG(0,printk("AWE32 found at %x\n", addr));
6021         return 1;
6022 }
6023
6024 static int __init awe_detect_legacy_devices(void)
6025 {
6026         int base;
6027         for (base = 0x620; base <= 0x680; base += 0x20)
6028                 if (awe_detect_base(base)) {
6029                         awe_attach_device();
6030                         return 1;
6031                         }
6032         DEBUG(0,printk("AWE32 Legacy detection failed\n"));
6033         return 0;
6034 }
6035
6036
6037 /*
6038  * PnP device Probing
6039  */
6040
6041 static struct pnp_device_id awe_pnp_ids[] = {
6042         {.id = "CTL0021", .driver_data = 0}, /* AWE32 WaveTable */
6043         {.id = "CTL0022", .driver_data = 0}, /* AWE64 WaveTable */
6044         {.id = "CTL0023", .driver_data = 0}, /* AWE64 Gold WaveTable */
6045         { } /* terminator */
6046 };
6047
6048 MODULE_DEVICE_TABLE(pnp, awe_pnp_ids);
6049
6050 static int awe_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
6051 {
6052         int io1, io2, io3;
6053
6054         if (awe_present) {
6055                 printk(KERN_ERR "AWE32: This driver only supports one AWE32 device, skipping.\n");
6056         }
6057
6058         if (!pnp_port_valid(dev,0) ||
6059             !pnp_port_valid(dev,1) ||
6060             !pnp_port_valid(dev,2)) {
6061                 printk(KERN_ERR "AWE32: The PnP device does not have the required resources.\n");
6062                 return -EINVAL;
6063         }
6064         io1 = pnp_port_start(dev,0);
6065         io2 = pnp_port_start(dev,1);
6066         io3 = pnp_port_start(dev,2);
6067         printk(KERN_INFO "AWE32: A PnP Wave Table was detected at IO's %#x,%#x,%#x.\n",
6068                io1, io2, io3);
6069         setup_ports(io1, io2, io3);
6070
6071         awe_attach_device();
6072         return 0;
6073 }
6074
6075 static void awe_pnp_remove(struct pnp_dev *dev)
6076 {
6077         awe_dettach_device();
6078 }
6079
6080 static struct pnp_driver awe_pnp_driver = {
6081         .name           = "AWE32",
6082         .id_table       = awe_pnp_ids,
6083         .probe          = awe_pnp_probe,
6084         .remove         = awe_pnp_remove,
6085 };
6086
6087 static int __init awe_detect_pnp_devices(void)
6088 {
6089         int ret;
6090
6091         ret = pnp_register_driver(&awe_pnp_driver);
6092         if (ret<0)
6093                 printk(KERN_ERR "AWE32: PnP support is unavailable.\n");
6094         return ret;
6095 }
6096
6097
6098 /*
6099  * device / lowlevel (module) interface
6100  */
6101
6102 static int __init
6103 awe_detect(void)
6104 {
6105         printk(KERN_INFO "AWE32: Probing for WaveTable...\n");
6106         if (isapnp) {
6107                 if (awe_detect_pnp_devices()>=0)
6108                         return 1;
6109         } else
6110                 printk(KERN_INFO "AWE32: Skipping PnP detection.\n");
6111
6112         if (awe_detect_legacy_devices())
6113                 return 1;
6114
6115         return 0;
6116 }
6117
6118 static int __init attach_awe(void)
6119 {
6120         return awe_detect() ? 0 : -ENODEV;
6121 }
6122
6123 static void __exit unload_awe(void)
6124 {
6125         pnp_unregister_driver(&awe_pnp_driver);
6126         awe_dettach_device();
6127 }
6128
6129
6130 module_init(attach_awe);
6131 module_exit(unload_awe);
6132
6133 #ifndef MODULE
6134 static int __init setup_awe(char *str)
6135 {
6136         /* io, memsize, isapnp */
6137         int ints[4];
6138
6139         str = get_options(str, ARRAY_SIZE(ints), ints);
6140
6141         io = ints[1];
6142         memsize = ints[2];
6143         isapnp = ints[3];
6144
6145         return 1;
6146 }
6147
6148 __setup("awe=", setup_awe);
6149 #endif