LXR linux/sound/pci/echoaudio/echoaudio.h

   1/****************************************************************************
   2
   3   Copyright Echo Digital Audio Corporation (c) 1998 - 2004
   4   All rights reserved
   5   www.echoaudio.com
   6
   7   This file is part of Echo Digital Audio's generic driver library.
   8
   9   Echo Digital Audio's generic driver library is free software;
  10   you can redistribute it and/or modify it under the terms of
  11   the GNU General Public License as published by the Free Software
  12   Foundation.
  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., 59 Temple Place - Suite 330, Boston,
  22   MA  02111-1307, USA.
  23
  24 ****************************************************************************
  25
  26 Translation from C++ and adaptation for use in ALSA-Driver
  27 were made by Giuliano Pochini <pochini@shiny.it>
  28
  29 ****************************************************************************
  30
  31
  32   Here's a block diagram of how most of the cards work:
  33
  34                  +-----------+
  35           record |           |<-------------------- Inputs
  36          <-------|           |        |
  37     PCI          | Transport |        |
  38     bus          |  engine   |       \|/
  39          ------->|           |    +-------+
  40            play  |           |--->|monitor|-------> Outputs
  41                  +-----------+    | mixer |
  42                                   +-------+
  43
  44   The lines going to and from the PCI bus represent "pipes".  A pipe performs
  45   audio transport - moving audio data to and from buffers on the host via
  46   bus mastering.
  47
  48   The inputs and outputs on the right represent input and output "busses."
  49   A bus is a physical, real connection to the outside world.  An example
  50   of a bus would be the 1/4" analog connectors on the back of Layla or
  51   an RCA S/PDIF connector.
  52
  53   For most cards, there is a one-to-one correspondence between outputs
  54   and busses; that is, each individual pipe is hard-wired to a single bus.
  55
  56   Cards that work this way are Darla20, Gina20, Layla20, Darla24, Gina24,
  57   Layla24, Mona, and Indigo.
  58
  59
  60   Mia has a feature called "virtual outputs."
  61
  62
  63                  +-----------+
  64           record |           |<----------------------------- Inputs
  65          <-------|           |                  |
  66     PCI          | Transport |                  |
  67     bus          |  engine   |                 \|/
  68          ------->|           |   +------+   +-------+
  69            play  |           |-->|vmixer|-->|monitor|-------> Outputs
  70                  +-----------+   +------+   | mixer |
  71                                             +-------+
  72
  73
  74   Obviously, the difference here is the box labeled "vmixer."  Vmixer is
  75   short for "virtual output mixer."  For Mia, pipes are *not* hard-wired
  76   to a single bus; the vmixer lets you mix any pipe to any bus in any
  77   combination.
  78
  79   Note, however, that the left-hand side of the diagram is unchanged.
  80   Transport works exactly the same way - the difference is in the mixer stage.
  81
  82
  83   Pipes and busses are numbered starting at zero.
  84
  85
  86
  87   Pipe index
  88   ==========
  89
  90   A number of calls in CEchoGals refer to a "pipe index".  A pipe index is
  91   a unique number for a pipe that unambiguously refers to a playback or record
  92   pipe.  Pipe indices are numbered starting with analog outputs, followed by
  93   digital outputs, then analog inputs, then digital inputs.
  94
  95   Take Gina24 as an example:
  96
  97   Pipe index
  98
  99   0-7            Analog outputs (0 .. FirstDigitalBusOut-1)
 100   8-15           Digital outputs (FirstDigitalBusOut .. NumBussesOut-1)
 101   16-17          Analog inputs
 102   18-25          Digital inputs
 103
 104
 105   You get the pipe index by calling CEchoGals::OpenAudio; the other transport
 106   functions take the pipe index as a parameter.  If you need a pipe index for
 107   some other reason, use the handy Makepipe_index method.
 108
 109
 110   Some calls take a CChannelMask parameter; CChannelMask is a handy way to
 111   group pipe indices.
 112
 113
 114
 115   Digital mode switch
 116   ===================
 117
 118   Some cards (right now, Gina24, Layla24, and Mona) have a Digital Mode Switch
 119   or DMS.  Cards with a DMS can be set to one of three mutually exclusive
 120   digital modes: S/PDIF RCA, S/PDIF optical, or ADAT optical.
 121
 122   This may create some confusion since ADAT optical is 8 channels wide and
 123   S/PDIF is only two channels wide.  Gina24, Layla24, and Mona handle this
 124   by acting as if they always have 8 digital outs and ins.  If you are in
 125   either S/PDIF mode, the last 6 channels don't do anything - data sent
 126   out these channels is thrown away and you will always record zeros.
 127
 128   Note that with Gina24, Layla24, and Mona, sample rates above 50 kHz are
 129   only available if you have the card configured for S/PDIF optical or S/PDIF
 130   RCA.
 131
 132
 133
 134   Double speed mode
 135   =================
 136
 137   Some of the cards support 88.2 kHz and 96 kHz sampling (Darla24, Gina24,
 138   Layla24, Mona, Mia, and Indigo).  For these cards, the driver sometimes has
 139   to worry about "double speed mode"; double speed mode applies whenever the
 140   sampling rate is above 50 kHz.
 141
 142   For instance, Mona and Layla24 support word clock sync.  However, they
 143   actually support two different word clock modes - single speed (below
 144   50 kHz) and double speed (above 50 kHz).  The hardware detects if a single
 145   or double speed word clock signal is present; the generic code uses that
 146   information to determine which mode to use.
 147
 148   The generic code takes care of all this for you.
 149*/
 150
 151
 152#ifndef _ECHOAUDIO_H_
 153#define _ECHOAUDIO_H_
 154
 155
 156#include "echoaudio_dsp.h"
 157
 158
 159
 160/***********************************************************************
 161
 162        PCI configuration space
 163
 164***********************************************************************/
 165
 166/*
 167 * PCI vendor ID and device IDs for the hardware
 168 */
 169#define VENDOR_ID               0x1057
 170#define DEVICE_ID_56301         0x1801
 171#define DEVICE_ID_56361         0x3410
 172#define SUBVENDOR_ID            0xECC0
 173
 174
 175/*
 176 * Valid Echo PCI subsystem card IDs
 177 */
 178#define DARLA20                 0x0010
 179#define GINA20                  0x0020
 180#define LAYLA20                 0x0030
 181#define DARLA24                 0x0040
 182#define GINA24                  0x0050
 183#define LAYLA24                 0x0060
 184#define MONA                    0x0070
 185#define MIA                     0x0080
 186#define INDIGO                  0x0090
 187#define INDIGO_IO               0x00a0
 188#define INDIGO_DJ               0x00b0
 189#define DC8                     0x00c0
 190#define INDIGO_IOX              0x00d0
 191#define INDIGO_DJX              0x00e0
 192#define ECHO3G                  0x0100
 193
 194
 195/************************************************************************
 196
 197        Array sizes and so forth
 198
 199***********************************************************************/
 200
 201/*
 202 * Sizes
 203 */
 204#define ECHO_MAXAUDIOINPUTS     32      /* Max audio input channels */
 205#define ECHO_MAXAUDIOOUTPUTS    32      /* Max audio output channels */
 206#define ECHO_MAXAUDIOPIPES      32      /* Max number of input and output
 207                                         * pipes */
 208#define E3G_MAX_OUTPUTS         16
 209#define ECHO_MAXMIDIJACKS       1       /* Max MIDI ports */
 210#define ECHO_MIDI_QUEUE_SZ      512     /* Max MIDI input queue entries */
 211#define ECHO_MTC_QUEUE_SZ       32      /* Max MIDI time code input queue
 212                                         * entries */
 213
 214/*
 215 * MIDI activity indicator timeout
 216 */
 217#define MIDI_ACTIVITY_TIMEOUT_USEC      200000
 218
 219
 220/****************************************************************************
 221 
 222   Clocks
 223
 224*****************************************************************************/
 225
 226/*
 227 * Clock numbers
 228 */
 229#define ECHO_CLOCK_INTERNAL             0
 230#define ECHO_CLOCK_WORD                 1
 231#define ECHO_CLOCK_SUPER                2
 232#define ECHO_CLOCK_SPDIF                3
 233#define ECHO_CLOCK_ADAT                 4
 234#define ECHO_CLOCK_ESYNC                5
 235#define ECHO_CLOCK_ESYNC96              6
 236#define ECHO_CLOCK_MTC                  7
 237#define ECHO_CLOCK_NUMBER               8
 238#define ECHO_CLOCKS                     0xffff
 239
 240/*
 241 * Clock bit numbers - used to report capabilities and whatever clocks
 242 * are being detected dynamically.
 243 */
 244#define ECHO_CLOCK_BIT_INTERNAL         (1 << ECHO_CLOCK_INTERNAL)
 245#define ECHO_CLOCK_BIT_WORD             (1 << ECHO_CLOCK_WORD)
 246#define ECHO_CLOCK_BIT_SUPER            (1 << ECHO_CLOCK_SUPER)
 247#define ECHO_CLOCK_BIT_SPDIF            (1 << ECHO_CLOCK_SPDIF)
 248#define ECHO_CLOCK_BIT_ADAT             (1 << ECHO_CLOCK_ADAT)
 249#define ECHO_CLOCK_BIT_ESYNC            (1 << ECHO_CLOCK_ESYNC)
 250#define ECHO_CLOCK_BIT_ESYNC96          (1 << ECHO_CLOCK_ESYNC96)
 251#define ECHO_CLOCK_BIT_MTC              (1<<ECHO_CLOCK_MTC)
 252
 253
 254/***************************************************************************
 255
 256   Digital modes
 257
 258****************************************************************************/
 259
 260/*
 261 * Digital modes for Mona, Layla24, and Gina24
 262 */
 263#define DIGITAL_MODE_NONE                       0xFF
 264#define DIGITAL_MODE_SPDIF_RCA                  0
 265#define DIGITAL_MODE_SPDIF_OPTICAL              1
 266#define DIGITAL_MODE_ADAT                       2
 267#define DIGITAL_MODE_SPDIF_CDROM                3
 268#define DIGITAL_MODES                           4
 269
 270/*
 271 * Digital mode capability masks
 272 */
 273#define ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA     (1 << DIGITAL_MODE_SPDIF_RCA)
 274#define ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL (1 << DIGITAL_MODE_SPDIF_OPTICAL)
 275#define ECHOCAPS_HAS_DIGITAL_MODE_ADAT          (1 << DIGITAL_MODE_ADAT)
 276#define ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_CDROM   (1 << DIGITAL_MODE_SPDIF_CDROM)
 277
 278
 279#define EXT_3GBOX_NC                    0x01    /* 3G box not connected */
 280#define EXT_3GBOX_NOT_SET               0x02    /* 3G box not detected yet */
 281
 282
 283#define ECHOGAIN_MUTED          (-128)  /* Minimum possible gain */
 284#define ECHOGAIN_MINOUT         (-128)  /* Min output gain (dB) */
 285#define ECHOGAIN_MAXOUT         (6)     /* Max output gain (dB) */
 286#define ECHOGAIN_MININP         (-50)   /* Min input gain (0.5 dB) */
 287#define ECHOGAIN_MAXINP         (50)    /* Max input gain (0.5 dB) */
 288
 289#define PIPE_STATE_STOPPED      0       /* Pipe has been reset */
 290#define PIPE_STATE_PAUSED       1       /* Pipe has been stopped */
 291#define PIPE_STATE_STARTED      2       /* Pipe has been started */
 292#define PIPE_STATE_PENDING      3       /* Pipe has pending start */
 293
 294
 295
 296struct audiopipe {
 297        volatile __le32 *dma_counter;   /* Commpage register that contains
 298                                         * the current dma position
 299                                         * (lower 32 bits only)
 300                                         */
 301        u32 last_period;                /* Counter position last time a
 302                                         * period elapsed
 303                                         */
 304        u32 last_counter;               /* Used exclusively by pcm_pointer
 305                                         * under PCM core locks.
 306                                         * The last position, which is used
 307                                         * to compute...
 308                                         */
 309        u32 position;                   /* ...the number of bytes tranferred
 310                                         * by the DMA engine, modulo the
 311                                         * buffer size
 312                                         */
 313        short index;                    /* Index of the first channel or <0
 314                                         * if hw is not configured yet
 315                                         */
 316        short interleave;
 317        struct snd_dma_buffer sgpage;   /* Room for the scatter-gather list */
 318        struct snd_pcm_hardware hw;
 319        struct snd_pcm_hw_constraint_list constr;
 320        short sglist_head;
 321        char state;                     /* pipe state */
 322};
 323
 324
 325struct audioformat {
 326        u8 interleave;                  /* How the data is arranged in memory:
 327                                         * mono = 1, stereo = 2, ...
 328                                         */
 329        u8 bits_per_sample;             /* 8, 16, 24, 32 (24 bits left aligned) */
 330        char mono_to_stereo;            /* Only used if interleave is 1 and
 331                                         * if this is an output pipe.
 332                                         */
 333        char data_are_bigendian;        /* 1 = big endian, 0 = little endian */
 334};
 335
 336
 337struct echoaudio {
 338        spinlock_t lock;
 339        struct snd_pcm_substream *substream[DSP_MAXPIPES];
 340        struct mutex mode_mutex;
 341        u16 num_digital_modes, digital_mode_list[6];
 342        u16 num_clock_sources, clock_source_list[10];
 343        unsigned int opencount;  /* protected by mode_mutex */
 344        struct snd_kcontrol *clock_src_ctl;
 345        struct snd_pcm *analog_pcm, *digital_pcm;
 346        struct snd_card *card;
 347        const char *card_name;
 348        struct pci_dev *pci;
 349        unsigned long dsp_registers_phys;
 350        struct resource *iores;
 351        struct snd_dma_buffer *commpage_dma_buf;
 352        int irq;
 353#ifdef ECHOCARD_HAS_MIDI
 354        struct snd_rawmidi *rmidi;
 355        struct snd_rawmidi_substream *midi_in, *midi_out;
 356#endif
 357        struct timer_list timer;
 358        char tinuse;                            /* Timer in use */
 359        char midi_full;                         /* MIDI output buffer is full */
 360        char can_set_rate;                      /* protected by mode_mutex */
 361        char rate_set;                          /* protected by mode_mutex */
 362
 363        /* This stuff is used mainly by the lowlevel code */
 364        struct comm_page *comm_page;    /* Virtual address of the memory
 365                                         * seen by DSP
 366                                         */
 367        u32 pipe_alloc_mask;            /* Bitmask of allocated pipes */
 368        u32 pipe_cyclic_mask;           /* Bitmask of pipes with cyclic
 369                                         * buffers
 370                                         */
 371        u32 sample_rate;                /* Card sample rate in Hz */
 372        u8 digital_mode;                /* Current digital mode
 373                                         * (see DIGITAL_MODE_*)
 374                                         */
 375        u8 spdif_status;                /* Gina20, Darla20, Darla24 - only */
 376        u8 clock_state;                 /* Gina20, Darla20, Darla24 - only */
 377        u8 input_clock;                 /* Currently selected sample clock
 378                                         * source
 379                                         */
 380        u8 output_clock;                /* Layla20 only */
 381        char meters_enabled;            /* VU-meters status */
 382        char asic_loaded;               /* Set true when ASIC loaded */
 383        char bad_board;                 /* Set true if DSP won't load */
 384        char professional_spdif;        /* 0 = consumer; 1 = professional */
 385        char non_audio_spdif;           /* 3G - only */
 386        char digital_in_automute;       /* Gina24, Layla24, Mona - only */
 387        char has_phantom_power;
 388        char hasnt_input_nominal_level; /* Gina3G */
 389        char phantom_power;             /* Gina3G - only */
 390        char has_midi;
 391        char midi_input_enabled;
 392
 393#ifdef ECHOCARD_ECHO3G
 394        /* External module -dependent pipe and bus indexes */
 395        char px_digital_out, px_analog_in, px_digital_in, px_num;
 396        char bx_digital_out, bx_analog_in, bx_digital_in, bx_num;
 397#endif
 398
 399        char nominal_level[ECHO_MAXAUDIOPIPES]; /* True == -10dBV
 400                                                 * False == +4dBu */
 401        s8 input_gain[ECHO_MAXAUDIOINPUTS];     /* Input level -50..+50
 402                                                 * unit is 0.5dB */
 403        s8 output_gain[ECHO_MAXAUDIOOUTPUTS];   /* Output level -128..+6 dB
 404                                                 * (-128=muted) */
 405        s8 monitor_gain[ECHO_MAXAUDIOOUTPUTS][ECHO_MAXAUDIOINPUTS];
 406                /* -128..+6 dB */
 407        s8 vmixer_gain[ECHO_MAXAUDIOOUTPUTS][ECHO_MAXAUDIOOUTPUTS];
 408                /* -128..+6 dB */
 409
 410        u16 digital_modes;              /* Bitmask of supported modes
 411                                         * (see ECHOCAPS_HAS_DIGITAL_MODE_*) */
 412        u16 input_clock_types;          /* Suppoted input clock types */
 413        u16 output_clock_types;         /* Suppoted output clock types -
 414                                         * Layla20 only */
 415        u16 device_id, subdevice_id;
 416        u16 *dsp_code;                  /* Current DSP code loaded,
 417                                         * NULL if nothing loaded */
 418        short dsp_code_to_load;         /* DSP code to load */
 419        short asic_code;                /* Current ASIC code */
 420        u32 comm_page_phys;                     /* Physical address of the
 421                                                 * memory seen by DSP */
 422        u32 __iomem *dsp_registers;             /* DSP's register base */
 423        u32 active_mask;                        /* Chs. active mask or
 424                                                 * punks out */
 425#ifdef CONFIG_PM_SLEEP
 426        const struct firmware *fw_cache[8];     /* Cached firmwares */
 427#endif
 428
 429#ifdef ECHOCARD_HAS_MIDI
 430        u16 mtc_state;                          /* State for MIDI input parsing state machine */
 431        u8 midi_buffer[MIDI_IN_BUFFER_SIZE];
 432#endif
 433};
 434
 435
 436static int init_dsp_comm_page(struct echoaudio *chip);
 437static int init_line_levels(struct echoaudio *chip);
 438static int free_pipes(struct echoaudio *chip, struct audiopipe *pipe);
 439static int load_firmware(struct echoaudio *chip);
 440static int wait_handshake(struct echoaudio *chip);
 441static int send_vector(struct echoaudio *chip, u32 command);
 442static int get_firmware(const struct firmware **fw_entry,
 443                        struct echoaudio *chip, const short fw_index);
 444static void free_firmware(const struct firmware *fw_entry,
 445                          struct echoaudio *chip);
 446
 447#ifdef ECHOCARD_HAS_MIDI
 448static int enable_midi_input(struct echoaudio *chip, char enable);
 449static void snd_echo_midi_output_trigger(
 450                        struct snd_rawmidi_substream *substream, int up);
 451static int midi_service_irq(struct echoaudio *chip);
 452static int snd_echo_midi_create(struct snd_card *card,
 453                                struct echoaudio *chip);
 454#endif
 455
 456
 457static inline void clear_handshake(struct echoaudio *chip)
 458{
 459        chip->comm_page->handshake = 0;
 460}
 461
 462static inline u32 get_dsp_register(struct echoaudio *chip, u32 index)
 463{
 464        return readl(&chip->dsp_registers[index]);
 465}
 466
 467static inline void set_dsp_register(struct echoaudio *chip, u32 index,
 468                                    u32 value)
 469{
 470        writel(value, &chip->dsp_registers[index]);
 471}
 472
 473
 474/* Pipe and bus indexes. PX_* and BX_* are defined as chip->px_* and chip->bx_*
 475for 3G cards because they depend on the external box. They are integer
 476constants for all other cards.
 477Never use those defines directly, use the following functions instead. */
 478
 479static inline int px_digital_out(const struct echoaudio *chip)
 480{
 481        return PX_DIGITAL_OUT;
 482}
 483
 484static inline int px_analog_in(const struct echoaudio *chip)
 485{
 486        return PX_ANALOG_IN;
 487}
 488
 489static inline int px_digital_in(const struct echoaudio *chip)
 490{
 491        return PX_DIGITAL_IN;
 492}
 493
 494static inline int px_num(const struct echoaudio *chip)
 495{
 496        return PX_NUM;
 497}
 498
 499static inline int bx_digital_out(const struct echoaudio *chip)
 500{
 501        return BX_DIGITAL_OUT;
 502}
 503
 504static inline int bx_analog_in(const struct echoaudio *chip)
 505{
 506        return BX_ANALOG_IN;
 507}
 508
 509static inline int bx_digital_in(const struct echoaudio *chip)
 510{
 511        return BX_DIGITAL_IN;
 512}
 513
 514static inline int bx_num(const struct echoaudio *chip)
 515{
 516        return BX_NUM;
 517}
 518
 519static inline int num_pipes_out(const struct echoaudio *chip)
 520{
 521        return px_analog_in(chip);
 522}
 523
 524static inline int num_pipes_in(const struct echoaudio *chip)
 525{
 526        return px_num(chip) - px_analog_in(chip);
 527}
 528
 529static inline int num_busses_out(const struct echoaudio *chip)
 530{
 531        return bx_analog_in(chip);
 532}
 533
 534static inline int num_busses_in(const struct echoaudio *chip)
 535{
 536        return bx_num(chip) - bx_analog_in(chip);
 537}
 538
 539static inline int num_analog_busses_out(const struct echoaudio *chip)
 540{
 541        return bx_digital_out(chip);
 542}
 543
 544static inline int num_analog_busses_in(const struct echoaudio *chip)
 545{
 546        return bx_digital_in(chip) - bx_analog_in(chip);
 547}
 548
 549static inline int num_digital_busses_out(const struct echoaudio *chip)
 550{
 551        return num_busses_out(chip) - num_analog_busses_out(chip);
 552}
 553
 554static inline int num_digital_busses_in(const struct echoaudio *chip)
 555{
 556        return num_busses_in(chip) - num_analog_busses_in(chip);
 557}
 558
 559/* The monitor array is a one-dimensional array; compute the offset
 560 * into the array */
 561static inline int monitor_index(const struct echoaudio *chip, int out, int in)
 562{
 563        return out * num_busses_in(chip) + in;
 564}
 565
 566#endif /* _ECHOAUDIO_H_ */
 567