sb8.c

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    1 /*
    2  * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
    3  * Copyright 1997,1998 Luigi Rizzo.
    4  *
    5  * Derived from files in the Voxware 3.5 distribution,
    6  * Copyright by Hannu Savolainen 1994, under the same copyright
    7  * conditions.
    8  * All rights reserved.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  */
   31 
   32 #include <dev/sound/pcm/sound.h>
   33 
   34 #include  <dev/sound/isa/sb.h>
   35 #include  <dev/sound/chip.h>
   36 
   37 #include <isa/isavar.h>
   38 
   39 #include "mixer_if.h"
   40 
   41 SND_DECLARE_FILE("$FreeBSD: releng/5.2/sys/dev/sound/isa/sb8.c 119853 2003-09-07 16:28:03Z cg $");
   42 
   43 #define SB_DEFAULT_BUFSZ        4096
   44 
   45 static u_int32_t sb_fmt[] = {
   46         AFMT_U8,
   47         0
   48 };
   49 static struct pcmchan_caps sb200_playcaps = {4000, 23000, sb_fmt, 0};
   50 static struct pcmchan_caps sb200_reccaps = {4000, 13000, sb_fmt, 0};
   51 static struct pcmchan_caps sb201_playcaps = {4000, 44100, sb_fmt, 0};
   52 static struct pcmchan_caps sb201_reccaps = {4000, 15000, sb_fmt, 0};
   53 
   54 static u_int32_t sbpro_fmt[] = {
   55         AFMT_U8,
   56         AFMT_STEREO | AFMT_U8,
   57         0
   58 };
   59 static struct pcmchan_caps sbpro_playcaps = {4000, 44100, sbpro_fmt, 0};
   60 static struct pcmchan_caps sbpro_reccaps = {4000, 44100, sbpro_fmt, 0};
   61 
   62 struct sb_info;
   63 
   64 struct sb_chinfo {
   65         struct sb_info *parent;
   66         struct pcm_channel *channel;
   67         struct snd_dbuf *buffer;
   68         int dir;
   69         u_int32_t fmt, spd, blksz;
   70 };
   71 
   72 struct sb_info {
   73         device_t parent_dev;
   74         struct resource *io_base;       /* I/O address for the board */
   75         struct resource *irq;
   76         struct resource *drq;
   77         void *ih;
   78         bus_dma_tag_t parent_dmat;
   79 
   80         unsigned int bufsize;
   81         int bd_id;
   82         u_long bd_flags;       /* board-specific flags */
   83         struct sb_chinfo pch, rch;
   84 };
   85 
   86 static int sb_rd(struct sb_info *sb, int reg);
   87 static void sb_wr(struct sb_info *sb, int reg, u_int8_t val);
   88 static int sb_dspready(struct sb_info *sb);
   89 static int sb_cmd(struct sb_info *sb, u_char val);
   90 static int sb_cmd1(struct sb_info *sb, u_char cmd, int val);
   91 static int sb_cmd2(struct sb_info *sb, u_char cmd, int val);
   92 static u_int sb_get_byte(struct sb_info *sb);
   93 static void sb_setmixer(struct sb_info *sb, u_int port, u_int value);
   94 static int sb_getmixer(struct sb_info *sb, u_int port);
   95 static int sb_reset_dsp(struct sb_info *sb);
   96 
   97 static void sb_intr(void *arg);
   98 static int sb_speed(struct sb_chinfo *ch);
   99 static int sb_start(struct sb_chinfo *ch);
  100 static int sb_stop(struct sb_chinfo *ch);
  101 
  102 /*
  103  * Common code for the midi and pcm functions
  104  *
  105  * sb_cmd write a single byte to the CMD port.
  106  * sb_cmd1 write a CMD + 1 byte arg
  107  * sb_cmd2 write a CMD + 2 byte arg
  108  * sb_get_byte returns a single byte from the DSP data port
  109  */
  110 
  111 static void
  112 sb_lock(struct sb_info *sb) {
  113 
  114         sbc_lock(device_get_softc(sb->parent_dev));
  115 }
  116 
  117 static void
  118 sb_unlock(struct sb_info *sb) {
  119 
  120         sbc_unlock(device_get_softc(sb->parent_dev));
  121 }
  122 
  123 static int
  124 port_rd(struct resource *port, int off)
  125 {
  126         return bus_space_read_1(rman_get_bustag(port), rman_get_bushandle(port), off);
  127 }
  128 
  129 static void
  130 port_wr(struct resource *port, int off, u_int8_t data)
  131 {
  132         bus_space_write_1(rman_get_bustag(port), rman_get_bushandle(port), off, data);
  133 }
  134 
  135 static int
  136 sb_rd(struct sb_info *sb, int reg)
  137 {
  138         return port_rd(sb->io_base, reg);
  139 }
  140 
  141 static void
  142 sb_wr(struct sb_info *sb, int reg, u_int8_t val)
  143 {
  144         port_wr(sb->io_base, reg, val);
  145 }
  146 
  147 static int
  148 sb_dspready(struct sb_info *sb)
  149 {
  150         return ((sb_rd(sb, SBDSP_STATUS) & 0x80) == 0);
  151 }
  152 
  153 static int
  154 sb_dspwr(struct sb_info *sb, u_char val)
  155 {
  156         int  i;
  157 
  158         for (i = 0; i < 1000; i++) {
  159                 if (sb_dspready(sb)) {
  160                         sb_wr(sb, SBDSP_CMD, val);
  161                         return 1;
  162                 }
  163                 if (i > 10) DELAY((i > 100)? 1000 : 10);
  164         }
  165         printf("sb_dspwr(0x%02x) timed out.\n", val);
  166         return 0;
  167 }
  168 
  169 static int
  170 sb_cmd(struct sb_info *sb, u_char val)
  171 {
  172 #if 0
  173         printf("sb_cmd: %x\n", val);
  174 #endif
  175         return sb_dspwr(sb, val);
  176 }
  177 
  178 static int
  179 sb_cmd1(struct sb_info *sb, u_char cmd, int val)
  180 {
  181 #if 0
  182         printf("sb_cmd1: %x, %x\n", cmd, val);
  183 #endif
  184         if (sb_dspwr(sb, cmd)) {
  185                 return sb_dspwr(sb, val & 0xff);
  186         } else return 0;
  187 }
  188 
  189 static int
  190 sb_cmd2(struct sb_info *sb, u_char cmd, int val)
  191 {
  192 #if 0
  193         printf("sb_cmd2: %x, %x\n", cmd, val);
  194 #endif
  195         if (sb_dspwr(sb, cmd)) {
  196                 return sb_dspwr(sb, val & 0xff) &&
  197                        sb_dspwr(sb, (val >> 8) & 0xff);
  198         } else return 0;
  199 }
  200 
  201 /*
  202  * in the SB, there is a set of indirect "mixer" registers with
  203  * address at offset 4, data at offset 5
  204  *
  205  * we don't need to interlock these, the mixer lock will suffice.
  206  */
  207 static void
  208 sb_setmixer(struct sb_info *sb, u_int port, u_int value)
  209 {
  210         sb_wr(sb, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
  211         DELAY(10);
  212         sb_wr(sb, SB_MIX_DATA, (u_char) (value & 0xff));
  213         DELAY(10);
  214 }
  215 
  216 static int
  217 sb_getmixer(struct sb_info *sb, u_int port)
  218 {
  219         int val;
  220 
  221         sb_wr(sb, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
  222         DELAY(10);
  223         val = sb_rd(sb, SB_MIX_DATA);
  224         DELAY(10);
  225 
  226         return val;
  227 }
  228 
  229 static u_int
  230 sb_get_byte(struct sb_info *sb)
  231 {
  232         int i;
  233 
  234         for (i = 1000; i > 0; i--) {
  235                 if (sb_rd(sb, DSP_DATA_AVAIL) & 0x80)
  236                         return sb_rd(sb, DSP_READ);
  237                 else
  238                         DELAY(20);
  239         }
  240         return 0xffff;
  241 }
  242 
  243 static int
  244 sb_reset_dsp(struct sb_info *sb)
  245 {
  246         sb_wr(sb, SBDSP_RST, 3);
  247         DELAY(100);
  248         sb_wr(sb, SBDSP_RST, 0);
  249         if (sb_get_byte(sb) != 0xAA) {
  250                 DEB(printf("sb_reset_dsp 0x%lx failed\n",
  251                            rman_get_start(sb->io_base)));
  252                 return ENXIO;   /* Sorry */
  253         }
  254         return 0;
  255 }
  256 
  257 static void
  258 sb_release_resources(struct sb_info *sb, device_t dev)
  259 {
  260         if (sb->irq) {
  261                 if (sb->ih)
  262                         bus_teardown_intr(dev, sb->irq, sb->ih);
  263                 bus_release_resource(dev, SYS_RES_IRQ, 0, sb->irq);
  264                 sb->irq = 0;
  265         }
  266         if (sb->drq) {
  267                 isa_dma_release(rman_get_start(sb->drq));
  268                 bus_release_resource(dev, SYS_RES_DRQ, 0, sb->drq);
  269                 sb->drq = 0;
  270         }
  271         if (sb->io_base) {
  272                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sb->io_base);
  273                 sb->io_base = 0;
  274         }
  275         if (sb->parent_dmat) {
  276                 bus_dma_tag_destroy(sb->parent_dmat);
  277                 sb->parent_dmat = 0;
  278         }
  279         free(sb, M_DEVBUF);
  280 }
  281 
  282 static int
  283 sb_alloc_resources(struct sb_info *sb, device_t dev)
  284 {
  285         int rid;
  286 
  287         rid = 0;
  288         if (!sb->io_base)
  289                 sb->io_base = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE);
  290         rid = 0;
  291         if (!sb->irq)
  292                 sb->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, RF_ACTIVE);
  293         rid = 0;
  294         if (!sb->drq)
  295                 sb->drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid, 0, ~0, 1, RF_ACTIVE);
  296 
  297         if (sb->io_base && sb->drq && sb->irq) {
  298                 isa_dma_acquire(rman_get_start(sb->drq));
  299                 isa_dmainit(rman_get_start(sb->drq), sb->bufsize);
  300 
  301                 return 0;
  302         } else return ENXIO;
  303 }
  304 
  305 /************************************************************/
  306 
  307 static int
  308 sbpromix_init(struct snd_mixer *m)
  309 {
  310         struct sb_info *sb = mix_getdevinfo(m);
  311 
  312         mix_setdevs(m, SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_LINE |
  313                        SOUND_MASK_MIC | SOUND_MASK_CD | SOUND_MASK_VOLUME);
  314 
  315         mix_setrecdevs(m, SOUND_MASK_LINE | SOUND_MASK_MIC | SOUND_MASK_CD);
  316 
  317         sb_setmixer(sb, 0, 1); /* reset mixer */
  318 
  319         return 0;
  320 }
  321 
  322 static int
  323 sbpromix_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
  324 {
  325         struct sb_info *sb = mix_getdevinfo(m);
  326         int reg, max;
  327         u_char val;
  328 
  329         max = 7;
  330         switch (dev) {
  331         case SOUND_MIXER_PCM:
  332                 reg = 0x04;
  333                 break;
  334 
  335         case SOUND_MIXER_MIC:
  336                 reg = 0x0a;
  337                 max = 3;
  338                 break;
  339 
  340         case SOUND_MIXER_VOLUME:
  341                 reg = 0x22;
  342                 break;
  343 
  344         case SOUND_MIXER_SYNTH:
  345                 reg = 0x26;
  346                 break;
  347 
  348         case SOUND_MIXER_CD:
  349                 reg = 0x28;
  350                 break;
  351 
  352         case SOUND_MIXER_LINE:
  353                 reg = 0x2e;
  354                 break;
  355 
  356         default:
  357                 return -1;
  358         }
  359 
  360         left = (left * max) / 100;
  361         right = (dev == SOUND_MIXER_MIC)? left : ((right * max) / 100);
  362 
  363         val = (dev == SOUND_MIXER_MIC)? (left << 1) : (left << 5 | right << 1);
  364         sb_setmixer(sb, reg, val);
  365 
  366         left = (left * 100) / max;
  367         right = (right * 100) / max;
  368 
  369         return left | (right << 8);
  370 }
  371 
  372 static int
  373 sbpromix_setrecsrc(struct snd_mixer *m, u_int32_t src)
  374 {
  375         struct sb_info *sb = mix_getdevinfo(m);
  376         u_char recdev;
  377 
  378         if      (src == SOUND_MASK_LINE)
  379                 recdev = 0x06;
  380         else if (src == SOUND_MASK_CD)
  381                 recdev = 0x02;
  382         else { /* default: mic */
  383                 src = SOUND_MASK_MIC;
  384                 recdev = 0;
  385         }
  386         sb_setmixer(sb, RECORD_SRC, recdev | (sb_getmixer(sb, RECORD_SRC) & ~0x07));
  387 
  388         return src;
  389 }
  390 
  391 static kobj_method_t sbpromix_mixer_methods[] = {
  392         KOBJMETHOD(mixer_init,          sbpromix_init),
  393         KOBJMETHOD(mixer_set,           sbpromix_set),
  394         KOBJMETHOD(mixer_setrecsrc,     sbpromix_setrecsrc),
  395         { 0, 0 }
  396 };
  397 MIXER_DECLARE(sbpromix_mixer);
  398 
  399 /************************************************************/
  400 
  401 static int
  402 sbmix_init(struct snd_mixer *m)
  403 {
  404         struct sb_info *sb = mix_getdevinfo(m);
  405 
  406         mix_setdevs(m, SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_CD | SOUND_MASK_VOLUME);
  407 
  408         mix_setrecdevs(m, 0);
  409 
  410         sb_setmixer(sb, 0, 1); /* reset mixer */
  411 
  412         return 0;
  413 }
  414 
  415 static int
  416 sbmix_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
  417 {
  418         struct sb_info *sb = mix_getdevinfo(m);
  419         int reg, max;
  420 
  421         max = 7;
  422         switch (dev) {
  423         case SOUND_MIXER_VOLUME:
  424                 reg = 0x2;
  425                 break;
  426 
  427         case SOUND_MIXER_SYNTH:
  428                 reg = 0x6;
  429                 break;
  430 
  431         case SOUND_MIXER_CD:
  432                 reg = 0x8;
  433                 break;
  434 
  435         case SOUND_MIXER_PCM:
  436                 reg = 0x0a;
  437                 max = 3;
  438                 break;
  439 
  440         default:
  441                 return -1;
  442         }
  443 
  444         left = (left * max) / 100;
  445 
  446         sb_setmixer(sb, reg, left << 1);
  447 
  448         left = (left * 100) / max;
  449 
  450         return left | (left << 8);
  451 }
  452 
  453 static int
  454 sbmix_setrecsrc(struct snd_mixer *m, u_int32_t src)
  455 {
  456         return 0;
  457 }
  458 
  459 static kobj_method_t sbmix_mixer_methods[] = {
  460         KOBJMETHOD(mixer_init,          sbmix_init),
  461         KOBJMETHOD(mixer_set,           sbmix_set),
  462         KOBJMETHOD(mixer_setrecsrc,     sbmix_setrecsrc),
  463         { 0, 0 }
  464 };
  465 MIXER_DECLARE(sbmix_mixer);
  466 
  467 /************************************************************/
  468 
  469 static void
  470 sb_intr(void *arg)
  471 {
  472         struct sb_info *sb = (struct sb_info *)arg;
  473 
  474         sb_lock(sb);
  475         if (sndbuf_runsz(sb->pch.buffer) > 0)
  476                 chn_intr(sb->pch.channel);
  477 
  478         if (sndbuf_runsz(sb->rch.buffer) > 0)
  479                 chn_intr(sb->rch.channel);
  480 
  481         sb_rd(sb, DSP_DATA_AVAIL); /* int ack */
  482         sb_unlock(sb);
  483 }
  484 
  485 static int
  486 sb_speed(struct sb_chinfo *ch)
  487 {
  488         struct sb_info *sb = ch->parent;
  489         int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
  490         int stereo = (ch->fmt & AFMT_STEREO)? 1 : 0;
  491         int speed, tmp, thresh, max;
  492         u_char tconst;
  493 
  494         if (sb->bd_id >= 0x300) {
  495                 thresh = stereo? 11025 : 23000;
  496                 max = stereo? 22050 : 44100;
  497         } else if (sb->bd_id > 0x200) {
  498                 thresh = play? 23000 : 13000;
  499                 max = play? 44100 : 15000;
  500         } else {
  501                 thresh = 999999;
  502                 max = play? 23000 : 13000;
  503         }
  504 
  505         speed = ch->spd;
  506         if (speed > max)
  507                 speed = max;
  508 
  509         sb_lock(sb);
  510         sb->bd_flags &= ~BD_F_HISPEED;
  511         if (speed > thresh)
  512                 sb->bd_flags |= BD_F_HISPEED;
  513 
  514         tmp = 65536 - (256000000 / (speed << stereo));
  515         tconst = tmp >> 8;
  516 
  517         sb_cmd1(sb, 0x40, tconst); /* set time constant */
  518 
  519         speed = (256000000 / (65536 - tmp)) >> stereo;
  520 
  521         ch->spd = speed;
  522         sb_unlock(sb);
  523         return speed;
  524 }
  525 
  526 static int
  527 sb_start(struct sb_chinfo *ch)
  528 {
  529         struct sb_info *sb = ch->parent;
  530         int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
  531         int stereo = (ch->fmt & AFMT_STEREO)? 1 : 0;
  532         int l = ch->blksz;
  533         u_char i;
  534 
  535         l--;
  536 
  537         sb_lock(sb);
  538         if (play)
  539                 sb_cmd(sb, DSP_CMD_SPKON);
  540 
  541         if (sb->bd_flags & BD_F_HISPEED)
  542                 i = play? 0x90 : 0x98;
  543         else
  544                 i = play? 0x1c : 0x2c;
  545 
  546         sb_setmixer(sb, 0x0e, stereo? 2 : 0);
  547         sb_cmd2(sb, 0x48, l);
  548         sb_cmd(sb, i);
  549 
  550         sb->bd_flags |= BD_F_DMARUN;
  551         sb_unlock(sb);
  552         return 0;
  553 }
  554 
  555 static int
  556 sb_stop(struct sb_chinfo *ch)
  557 {
  558         struct sb_info *sb = ch->parent;
  559         int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
  560 
  561         sb_lock(sb);
  562         if (sb->bd_flags & BD_F_HISPEED)
  563                 sb_reset_dsp(sb);
  564         else
  565                 sb_cmd(sb, DSP_CMD_DMAEXIT_8);
  566 
  567         if (play)
  568                 sb_cmd(sb, DSP_CMD_SPKOFF); /* speaker off */
  569         sb_unlock(sb);
  570         sb->bd_flags &= ~BD_F_DMARUN;
  571         return 0;
  572 }
  573 
  574 /* channel interface */
  575 static void *
  576 sbchan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
  577 {
  578         struct sb_info *sb = devinfo;
  579         struct sb_chinfo *ch = (dir == PCMDIR_PLAY)? &sb->pch : &sb->rch;
  580 
  581         ch->parent = sb;
  582         ch->channel = c;
  583         ch->dir = dir;
  584         ch->buffer = b;
  585         if (sndbuf_alloc(ch->buffer, sb->parent_dmat, sb->bufsize) == -1)
  586                 return NULL;
  587         sndbuf_dmasetup(ch->buffer, sb->drq);
  588         return ch;
  589 }
  590 
  591 static int
  592 sbchan_setformat(kobj_t obj, void *data, u_int32_t format)
  593 {
  594         struct sb_chinfo *ch = data;
  595 
  596         ch->fmt = format;
  597         return 0;
  598 }
  599 
  600 static int
  601 sbchan_setspeed(kobj_t obj, void *data, u_int32_t speed)
  602 {
  603         struct sb_chinfo *ch = data;
  604 
  605         ch->spd = speed;
  606         return sb_speed(ch);
  607 }
  608 
  609 static int
  610 sbchan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
  611 {
  612         struct sb_chinfo *ch = data;
  613 
  614         ch->blksz = blocksize;
  615         return ch->blksz;
  616 }
  617 
  618 static int
  619 sbchan_trigger(kobj_t obj, void *data, int go)
  620 {
  621         struct sb_chinfo *ch = data;
  622 
  623         if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD)
  624                 return 0;
  625 
  626         sndbuf_dma(ch->buffer, go);
  627         if (go == PCMTRIG_START)
  628                 sb_start(ch);
  629         else
  630                 sb_stop(ch);
  631         return 0;
  632 }
  633 
  634 static int
  635 sbchan_getptr(kobj_t obj, void *data)
  636 {
  637         struct sb_chinfo *ch = data;
  638 
  639         return sndbuf_dmaptr(ch->buffer);
  640 }
  641 
  642 static struct pcmchan_caps *
  643 sbchan_getcaps(kobj_t obj, void *data)
  644 {
  645         struct sb_chinfo *ch = data;
  646         int p = (ch->dir == PCMDIR_PLAY)? 1 : 0;
  647 
  648         if (ch->parent->bd_id == 0x200)
  649                 return p? &sb200_playcaps : &sb200_reccaps;
  650         if (ch->parent->bd_id < 0x300)
  651                 return p? &sb201_playcaps : &sb201_reccaps;
  652         return p? &sbpro_playcaps : &sbpro_reccaps;
  653 }
  654 
  655 static kobj_method_t sbchan_methods[] = {
  656         KOBJMETHOD(channel_init,                sbchan_init),
  657         KOBJMETHOD(channel_setformat,           sbchan_setformat),
  658         KOBJMETHOD(channel_setspeed,            sbchan_setspeed),
  659         KOBJMETHOD(channel_setblocksize,        sbchan_setblocksize),
  660         KOBJMETHOD(channel_trigger,             sbchan_trigger),
  661         KOBJMETHOD(channel_getptr,              sbchan_getptr),
  662         KOBJMETHOD(channel_getcaps,             sbchan_getcaps),
  663         { 0, 0 }
  664 };
  665 CHANNEL_DECLARE(sbchan);
  666 
  667 /************************************************************/
  668 
  669 static int
  670 sb_probe(device_t dev)
  671 {
  672         char buf[64];
  673         uintptr_t func, ver, r, f;
  674 
  675         /* The parent device has already been probed. */
  676         r = BUS_READ_IVAR(device_get_parent(dev), dev, 0, &func);
  677         if (func != SCF_PCM)
  678                 return (ENXIO);
  679 
  680         r = BUS_READ_IVAR(device_get_parent(dev), dev, 1, &ver);
  681         f = (ver & 0xffff0000) >> 16;
  682         ver &= 0x0000ffff;
  683         if ((f & BD_F_ESS) || (ver >= 0x400))
  684                 return (ENXIO);
  685 
  686         snprintf(buf, sizeof buf, "SB DSP %d.%02d", (int) ver >> 8, (int) ver & 0xff);
  687 
  688         device_set_desc_copy(dev, buf);
  689 
  690         return 0;
  691 }
  692 
  693 static int
  694 sb_attach(device_t dev)
  695 {
  696         struct sb_info *sb;
  697         char status[SND_STATUSLEN];
  698         uintptr_t ver;
  699 
  700         sb = (struct sb_info *)malloc(sizeof *sb, M_DEVBUF, M_NOWAIT | M_ZERO);
  701         if (!sb)
  702                 return ENXIO;
  703 
  704         sb->parent_dev = device_get_parent(dev);
  705         BUS_READ_IVAR(device_get_parent(dev), dev, 1, &ver);
  706         sb->bd_id = ver & 0x0000ffff;
  707         sb->bd_flags = (ver & 0xffff0000) >> 16;
  708         sb->bufsize = pcm_getbuffersize(dev, 4096, SB_DEFAULT_BUFSZ, 65536);
  709 
  710         if (sb_alloc_resources(sb, dev))
  711                 goto no;
  712         if (sb_reset_dsp(sb))
  713                 goto no;
  714         if (mixer_init(dev, (sb->bd_id < 0x300)? &sbmix_mixer_class : &sbpromix_mixer_class, sb))
  715                 goto no;
  716         if (snd_setup_intr(dev, sb->irq, INTR_MPSAFE, sb_intr, sb, &sb->ih))
  717                 goto no;
  718 
  719         pcm_setflags(dev, pcm_getflags(dev) | SD_F_SIMPLEX);
  720 
  721         if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0,
  722                         /*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
  723                         /*highaddr*/BUS_SPACE_MAXADDR,
  724                         /*filter*/NULL, /*filterarg*/NULL,
  725                         /*maxsize*/sb->bufsize, /*nsegments*/1,
  726                         /*maxsegz*/0x3ffff, /*flags*/0,
  727                         /*lockfunc*/busdma_lock_mutex, /*lockarg*/&Giant,
  728                         &sb->parent_dmat) != 0) {
  729                 device_printf(dev, "unable to create dma tag\n");
  730                 goto no;
  731         }
  732 
  733         snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld drq %ld bufsz %u",
  734                 rman_get_start(sb->io_base), rman_get_start(sb->irq), rman_get_start(sb->drq), sb->bufsize);
  735 
  736         if (pcm_register(dev, sb, 1, 1))
  737                 goto no;
  738         pcm_addchan(dev, PCMDIR_REC, &sbchan_class, sb);
  739         pcm_addchan(dev, PCMDIR_PLAY, &sbchan_class, sb);
  740 
  741         pcm_setstatus(dev, status);
  742 
  743         return 0;
  744 
  745 no:
  746         sb_release_resources(sb, dev);
  747         return ENXIO;
  748 }
  749 
  750 static int
  751 sb_detach(device_t dev)
  752 {
  753         int r;
  754         struct sb_info *sb;
  755 
  756         r = pcm_unregister(dev);
  757         if (r)
  758                 return r;
  759 
  760         sb = pcm_getdevinfo(dev);
  761         sb_release_resources(sb, dev);
  762         return 0;
  763 }
  764 
  765 static device_method_t sb_methods[] = {
  766         /* Device interface */
  767         DEVMETHOD(device_probe,         sb_probe),
  768         DEVMETHOD(device_attach,        sb_attach),
  769         DEVMETHOD(device_detach,        sb_detach),
  770 
  771         { 0, 0 }
  772 };
  773 
  774 static driver_t sb_driver = {
  775         "pcm",
  776         sb_methods,
  777         PCM_SOFTC_SIZE,
  778 };
  779 
  780 DRIVER_MODULE(snd_sb8, sbc, sb_driver, pcm_devclass, 0, 0);
  781 MODULE_DEPEND(snd_sb8, snd_pcm, PCM_MINVER, PCM_PREFVER, PCM_MAXVER);
  782 MODULE_DEPEND(snd_sb8, snd_sbc, 1, 1, 1);
  783 MODULE_VERSION(snd_sb8, 1);
  784 
  785 
  786 
  787
Cache object: dc209871e221abefabd188f14a5bdd5b
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FreeBSD/Linux Kernel Cross Reference sys/dev/sound/isa/sb8.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/isa/sb8.c
