LCOV - code coverage report
Current view: top level - dev/pci - auvia.c (source / functions) Hit Total Coverage
Test: 6.4 Lines: 0 413 0.0 %
Date: 2018-10-19 03:25:38 Functions: 0 29 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*      $OpenBSD: auvia.c,v 1.59 2018/09/14 08:37:34 miko Exp $ */
       2             : /*      $NetBSD: auvia.c,v 1.28 2002/11/04 16:38:49 kent Exp $  */
       3             : 
       4             : /*-
       5             :  * Copyright (c) 2000 The NetBSD Foundation, Inc.
       6             :  * All rights reserved.
       7             :  *
       8             :  * This code is derived from software contributed to The NetBSD Foundation
       9             :  * by Tyler C. Sarna
      10             :  *
      11             :  * Redistribution and use in source and binary forms, with or without
      12             :  * modification, are permitted provided that the following conditions
      13             :  * are met:
      14             :  * 1. Redistributions of source code must retain the above copyright
      15             :  *    notice, this list of conditions and the following disclaimer.
      16             :  * 2. Redistributions in binary form must reproduce the above copyright
      17             :  *    notice, this list of conditions and the following disclaimer in the
      18             :  *    documentation and/or other materials provided with the distribution.
      19             :  *
      20             :  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
      21             :  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
      22             :  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
      23             :  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
      24             :  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
      25             :  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
      26             :  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
      27             :  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
      28             :  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
      29             :  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
      30             :  * POSSIBILITY OF SUCH DAMAGE.
      31             :  */
      32             : 
      33             : /*
      34             :  * VIA Technologies VT82C686A Southbridge Audio Driver
      35             :  *
      36             :  * Documentation links:
      37             :  *
      38             :  * ftp://ftp.alsa-project.org/pub/manuals/via/686a.pdf
      39             :  */
      40             : 
      41             : #include <sys/param.h>
      42             : #include <sys/systm.h>
      43             : #include <sys/malloc.h>
      44             : #include <sys/device.h>
      45             : #include <sys/audioio.h>
      46             : 
      47             : #include <dev/pci/pcidevs.h>
      48             : #include <dev/pci/pcivar.h>
      49             : 
      50             : #include <dev/audio_if.h>
      51             : 
      52             : #include <dev/ic/ac97.h>
      53             : 
      54             : #include <dev/pci/auviavar.h>
      55             : 
      56             : struct auvia_dma {
      57             :         struct auvia_dma *next;
      58             :         caddr_t addr;
      59             :         size_t size;
      60             :         bus_dmamap_t map;
      61             :         bus_dma_segment_t seg;
      62             : };
      63             : 
      64             : struct auvia_dma_op {
      65             :         u_int32_t ptr;
      66             :         u_int32_t flags;
      67             : #define AUVIA_DMAOP_EOL         0x80000000
      68             : #define AUVIA_DMAOP_FLAG        0x40000000
      69             : #define AUVIA_DMAOP_STOP        0x20000000
      70             : #define AUVIA_DMAOP_COUNT(x)    ((x)&0x00FFFFFF)
      71             : };
      72             : 
      73             : int     auvia_match(struct device *, void *, void *);
      74             : void    auvia_attach(struct device *, struct device *, void *);
      75             : int     auvia_open(void *, int);
      76             : void    auvia_close(void *);
      77             : void    auvia_set_params_sub(struct auvia_softc *, struct auvia_softc_chan *,
      78             :         struct audio_params *);
      79             : int     auvia_set_params(void *, int, int, struct audio_params *,
      80             :         struct audio_params *);
      81             : int     auvia_round_blocksize(void *, int);
      82             : int     auvia_halt_output(void *);
      83             : int     auvia_halt_input(void *);
      84             : int     auvia_set_port(void *, mixer_ctrl_t *);
      85             : int     auvia_get_port(void *, mixer_ctrl_t *);
      86             : int     auvia_query_devinfo(void *, mixer_devinfo_t *);
      87             : void *  auvia_malloc(void *, int, size_t, int, int);
      88             : void    auvia_free(void *, void *, int);
      89             : size_t  auvia_round_buffersize(void *, int, size_t);
      90             : int     auvia_get_props(void *);
      91             : int     auvia_build_dma_ops(struct auvia_softc *, struct auvia_softc_chan *,
      92             :         struct auvia_dma *, void *, void *, int);
      93             : int     auvia_trigger_output(void *, void *, void *, int, void (*)(void *),
      94             :         void *, struct audio_params *);
      95             : int     auvia_trigger_input(void *, void *, void *, int, void (*)(void *),
      96             :         void *, struct audio_params *);
      97             : 
      98             : int     auvia_intr(void *);
      99             : 
     100             : int     auvia_activate(struct device *, int);
     101             : 
     102             : struct  cfdriver auvia_cd = {
     103             :         NULL, "auvia", DV_DULL
     104             : };
     105             : 
     106             : struct cfattach auvia_ca = {
     107             :         sizeof (struct auvia_softc), auvia_match, auvia_attach,
     108             :             NULL, auvia_activate
     109             : };
     110             : 
     111             : #define AUVIA_PCICONF_JUNK      0x40
     112             : #define         AUVIA_PCICONF_ENABLES    0x00FF0000     /* reg 42 mask */
     113             : #define         AUVIA_PCICONF_ACLINKENAB 0x00008000     /* ac link enab */
     114             : #define         AUVIA_PCICONF_ACNOTRST   0x00004000     /* ~(ac reset) */
     115             : #define         AUVIA_PCICONF_ACSYNC     0x00002000     /* ac sync */
     116             : #define         AUVIA_PCICONF_ACVSR      0x00000800     /* var. samp. rate */
     117             : #define         AUVIA_PCICONF_ACSGD      0x00000400     /* SGD enab */
     118             : #define         AUVIA_PCICONF_ACFM       0x00000200     /* FM enab */
     119             : #define         AUVIA_PCICONF_ACSB       0x00000100     /* SB enab */
     120             : #define         AUVIA_PCICONF_PRIVALID   0x00000001     /* primary codec rdy */
     121             : 
     122             : #define AUVIA_PLAY_BASE                 0x00
     123             : #define AUVIA_RECORD_BASE               0x10
     124             : 
     125             : /* *_RP_* are offsets from AUVIA_PLAY_BASE or AUVIA_RECORD_BASE */
     126             : #define AUVIA_RP_STAT                   0x00
     127             : #define         AUVIA_RPSTAT_INTR               0x03
     128             : #define AUVIA_RP_CONTROL                0x01
     129             : #define         AUVIA_RPCTRL_START              0x80
     130             : #define         AUVIA_RPCTRL_TERMINATE          0x40
     131             : #define         AUVIA_RPCTRL_AUTOSTART          0x20
     132             : /* The following are 8233 specific */
     133             : #define         AUVIA_RPCTRL_STOP               0x04
     134             : #define         AUVIA_RPCTRL_EOL                0x02
     135             : #define         AUVIA_RPCTRL_FLAG               0x01
     136             : #define AUVIA_RP_MODE                   0x02            /* 82c686 specific */
     137             : #define         AUVIA_RPMODE_INTR_FLAG          0x01
     138             : #define         AUVIA_RPMODE_INTR_EOL           0x02
     139             : #define         AUVIA_RPMODE_STEREO             0x10
     140             : #define         AUVIA_RPMODE_16BIT              0x20
     141             : #define         AUVIA_RPMODE_AUTOSTART          0x80
     142             : #define AUVIA_RP_DMAOPS_BASE            0x04
     143             : 
     144             : #define VIA8233_RP_DXS_LVOL             0x02
     145             : #define VIA8233_RP_DXS_RVOL             0x03
     146             : #define VIA8233_RP_RATEFMT              0x08
     147             : #define         VIA8233_RATEFMT_48K     0xfffff
     148             : #define         VIA8233_RATEFMT_STEREO  0x00100000
     149             : #define         VIA8233_RATEFMT_16BIT   0x00200000
     150             : 
     151             : #define VIA_RP_DMAOPS_COUNT             0x0c
     152             : 
     153             : #define VIA8233_MP_BASE                 0x40
     154             :         /* STAT, CONTROL, DMAOPS_BASE, DMAOPS_COUNT are valid */
     155             : #define VIA8233_OFF_MP_FORMAT           0x02
     156             : #define         VIA8233_MP_FORMAT_8BIT          0x00
     157             : #define         VIA8233_MP_FORMAT_16BIT         0x80
     158             : #define         VIA8233_MP_FORMAT_CHANNLE_MASK  0x70 /* 1, 2, 4, 6 */
     159             : #define VIA8233_OFF_MP_SCRATCH          0x03
     160             : #define VIA8233_OFF_MP_STOP             0x08
     161             : 
     162             : #define VIA8233_WR_BASE                 0x60
     163             : 
     164             : #define AUVIA_CODEC_CTL                 0x80
     165             : #define         AUVIA_CODEC_READ                0x00800000
     166             : #define         AUVIA_CODEC_BUSY                0x01000000
     167             : #define         AUVIA_CODEC_PRIVALID            0x02000000
     168             : #define         AUVIA_CODEC_INDEX(x)            ((x)<<16)
     169             : 
     170             : #define CH_WRITE1(sc, ch, off, v)       \
     171             :         bus_space_write_1((sc)->sc_iot,      (sc)->sc_ioh, (ch)->sc_base + (off), v)
     172             : #define CH_WRITE4(sc, ch, off, v)       \
     173             :         bus_space_write_4((sc)->sc_iot,      (sc)->sc_ioh, (ch)->sc_base + (off), v)
     174             : #define CH_READ1(sc, ch, off)           \
     175             :         bus_space_read_1((sc)->sc_iot, (sc)->sc_ioh, (ch)->sc_base + (off))
     176             : #define CH_READ4(sc, ch, off)           \
     177             :         bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, (ch)->sc_base + (off))
     178             : 
     179             : #define TIMEOUT 50
     180             : 
     181             : struct audio_hw_if auvia_hw_if = {
     182             :         auvia_open,
     183             :         auvia_close,
     184             :         auvia_set_params,
     185             :         auvia_round_blocksize,
     186             :         NULL, /* commit_settings */
     187             :         NULL, /* init_output */
     188             :         NULL, /* init_input */
     189             :         NULL, /* start_output */
     190             :         NULL, /* start_input */
     191             :         auvia_halt_output,
     192             :         auvia_halt_input,
     193             :         NULL, /* speaker_ctl */
     194             :         NULL, /* setfd */
     195             :         auvia_set_port,
     196             :         auvia_get_port,
     197             :         auvia_query_devinfo,
     198             :         auvia_malloc,
     199             :         auvia_free,
     200             :         auvia_round_buffersize,
     201             :         auvia_get_props,
     202             :         auvia_trigger_output,
     203             :         auvia_trigger_input
     204             : };
     205             : 
     206             : int     auvia_attach_codec(void *, struct ac97_codec_if *);
     207             : int     auvia_write_codec(void *, u_int8_t, u_int16_t);
     208             : int     auvia_read_codec(void *, u_int8_t, u_int16_t *);
     209             : void    auvia_reset_codec(void *);
     210             : int     auvia_waitready_codec(struct auvia_softc *sc);
     211             : int     auvia_waitvalid_codec(struct auvia_softc *sc);
     212             : void    auvia_spdif_event(void *, int);
     213             : 
     214             : void    auvia_resume(struct auvia_softc *);
     215             : 
     216             : const struct pci_matchid auvia_devices[] = {
     217             :         { PCI_VENDOR_VIATECH, PCI_PRODUCT_VIATECH_VT82C686A_AC97 },
     218             :         { PCI_VENDOR_VIATECH, PCI_PRODUCT_VIATECH_VT8233_AC97 },
     219             : };
     220             : 
     221             : int
     222           0 : auvia_match(struct device *parent, void *match, void *aux)
     223             : {
     224           0 :         return (pci_matchbyid((struct pci_attach_args *)aux, auvia_devices,
     225             :             nitems(auvia_devices)));
     226             : }
     227             : 
     228             : int
     229           0 : auvia_activate(struct device *self, int act)
     230             : {
     231           0 :         struct auvia_softc *sc = (struct auvia_softc *)self;
     232             : 
     233           0 :         if (act == DVACT_RESUME)
     234           0 :                 auvia_resume(sc);
     235           0 :         return (config_activate_children(self, act));
     236             : }
     237             : 
     238             : void
     239           0 : auvia_attach(struct device *parent, struct device *self, void *aux)
     240             : {
     241           0 :         struct pci_attach_args *pa = aux;
     242           0 :         struct auvia_softc *sc = (struct auvia_softc *) self;
     243             :         const char *intrstr = NULL;
     244           0 :         struct mixer_ctrl ctl;
     245           0 :         pci_chipset_tag_t pc = pa->pa_pc;
     246           0 :         pcitag_t pt = pa->pa_tag;
     247           0 :         pci_intr_handle_t ih;
     248           0 :         bus_size_t iosize;
     249             :         pcireg_t pr;
     250             :         int r, i;
     251             : 
     252           0 :         sc->sc_play.sc_base = AUVIA_PLAY_BASE;
     253           0 :         sc->sc_record.sc_base = AUVIA_RECORD_BASE;
     254           0 :         if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_VIATECH_VT8233_AC97) {
     255           0 :                 sc->sc_flags |= AUVIA_FLAGS_VT8233;
     256           0 :                 sc->sc_play.sc_base = VIA8233_MP_BASE;
     257           0 :                 sc->sc_record.sc_base = VIA8233_WR_BASE;
     258           0 :         }
     259             : 
     260           0 :         if (pci_mapreg_map(pa, 0x10, PCI_MAPREG_TYPE_IO, 0, &sc->sc_iot,
     261           0 :             &sc->sc_ioh, NULL, &iosize, 0)) {
     262           0 :                 printf(": can't map i/o space\n");
     263           0 :                 return;
     264             :         }
     265             : 
     266           0 :         sc->sc_dmat = pa->pa_dmat;
     267           0 :         sc->sc_pc = pc;
     268           0 :         sc->sc_pt = pt;
     269             : 
     270           0 :         if (pci_intr_map(pa, &ih)) {
     271           0 :                 printf(": couldn't map interrupt\n");
     272           0 :                 bus_space_unmap(sc->sc_iot, sc->sc_ioh, iosize);
     273           0 :                 return;
     274             :         }
     275           0 :         intrstr = pci_intr_string(pc, ih);
     276             : 
     277           0 :         sc->sc_ih = pci_intr_establish(pc, ih, IPL_AUDIO | IPL_MPSAFE,
     278           0 :             auvia_intr, sc, sc->sc_dev.dv_xname);
     279           0 :         if (sc->sc_ih == NULL) {
     280           0 :                 printf(": couldn't establish interrupt");
     281           0 :                 if (intrstr != NULL)
     282           0 :                         printf(" at %s", intrstr);
     283           0 :                 printf("\n");
     284           0 :                 bus_space_unmap(sc->sc_iot, sc->sc_ioh, iosize);
     285           0 :                 return;
     286             :         }
     287             : 
     288           0 :         printf(": %s\n", intrstr);
     289             : 
     290             :         /* disable SBPro compat & others */
     291           0 :         pr = pci_conf_read(pc, pt, AUVIA_PCICONF_JUNK);
     292             : 
     293           0 :         pr &= ~AUVIA_PCICONF_ENABLES; /* clear compat function enables */
     294             :         /* XXX what to do about MIDI, FM, joystick? */
     295             : 
     296           0 :         pr |= (AUVIA_PCICONF_ACLINKENAB | AUVIA_PCICONF_ACNOTRST |
     297             :             AUVIA_PCICONF_ACVSR | AUVIA_PCICONF_ACSGD);
     298             : 
     299           0 :         pr &= ~(AUVIA_PCICONF_ACFM | AUVIA_PCICONF_ACSB);
     300             : 
     301           0 :         pci_conf_write(pc, pt, AUVIA_PCICONF_JUNK, pr);
     302           0 :         sc->sc_pci_junk = pr;
     303             : 
     304           0 :         sc->host_if.arg = sc;
     305           0 :         sc->host_if.attach = auvia_attach_codec;
     306           0 :         sc->host_if.read = auvia_read_codec;
     307           0 :         sc->host_if.write = auvia_write_codec;
     308           0 :         sc->host_if.reset = auvia_reset_codec;
     309           0 :         sc->host_if.spdif_event = auvia_spdif_event;
     310             : 
     311           0 :         if ((r = ac97_attach(&sc->host_if)) != 0) {
     312           0 :                 printf("%s: can't attach codec (error 0x%X)\n",
     313             :                     sc->sc_dev.dv_xname, r);
     314           0 :                 pci_intr_disestablish(pc, sc->sc_ih);
     315           0 :                 bus_space_unmap(sc->sc_iot, sc->sc_ioh, iosize);
     316           0 :                 return;
     317             :         }
     318             : 
     319             :         /* disable mutes */
     320           0 :         for (i = 0; i < 4; i++) {
     321             :                 static struct {
     322             :                         char *class, *device;
     323             :                 } d[] = {
     324             :                         { AudioCoutputs, AudioNmaster},
     325             :                         { AudioCinputs, AudioNdac},
     326             :                         { AudioCinputs, AudioNcd},
     327             :                         { AudioCrecord, AudioNvolume},
     328             :                 };
     329             : 
     330           0 :                 ctl.type = AUDIO_MIXER_ENUM;
     331           0 :                 ctl.un.ord = 0;
     332             : 
     333           0 :                 ctl.dev = sc->codec_if->vtbl->get_portnum_by_name(sc->codec_if,
     334           0 :                     d[i].class, d[i].device, AudioNmute);
     335           0 :                 auvia_set_port(sc, &ctl);
     336             :         }
     337             : 
     338             :         /* set a reasonable default volume */
     339             : 
     340           0 :         ctl.type = AUDIO_MIXER_VALUE;
     341           0 :         ctl.un.value.num_channels = 2;
     342           0 :         ctl.un.value.level[AUDIO_MIXER_LEVEL_LEFT] = \
     343           0 :         ctl.un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = 199;
     344             : 
     345           0 :         ctl.dev = sc->codec_if->vtbl->get_portnum_by_name(sc->codec_if,
     346             :             AudioCoutputs, AudioNmaster, NULL);
     347           0 :         auvia_set_port(sc, &ctl);
     348             : 
     349           0 :         audio_attach_mi(&auvia_hw_if, sc, &sc->sc_dev);
     350           0 :         sc->codec_if->vtbl->unlock(sc->codec_if);
     351           0 : }
     352             : 
     353             : 
     354             : int
     355           0 : auvia_attach_codec(void *addr, struct ac97_codec_if *cif)
     356             : {
     357           0 :         struct auvia_softc *sc = addr;
     358             : 
     359           0 :         sc->codec_if = cif;
     360             : 
     361           0 :         return 0;
     362             : }
     363             : 
     364             : 
     365             : void
     366           0 : auvia_reset_codec(void *addr)
     367             : {
     368             :         int i;
     369           0 :         struct auvia_softc *sc = addr;
     370             :         pcireg_t r;
     371             : 
     372             :         /* perform a codec cold reset */
     373             : 
     374           0 :         r = pci_conf_read(sc->sc_pc, sc->sc_pt, AUVIA_PCICONF_JUNK);
     375             : 
     376           0 :         r &= ~AUVIA_PCICONF_ACNOTRST;       /* enable RESET (active low) */
     377           0 :         pci_conf_write(sc->sc_pc, sc->sc_pt, AUVIA_PCICONF_JUNK, r);
     378           0 :         delay(2);
     379             : 
     380           0 :         r |= AUVIA_PCICONF_ACNOTRST;    /* disable RESET (inactive high) */
     381           0 :         pci_conf_write(sc->sc_pc, sc->sc_pt, AUVIA_PCICONF_JUNK, r);
     382           0 :         delay(200);
     383             : 
     384           0 :         for (i = 500000; i != 0 && !(pci_conf_read(sc->sc_pc, sc->sc_pt,
     385           0 :                 AUVIA_PCICONF_JUNK) & AUVIA_PCICONF_PRIVALID); i--)
     386           0 :                 DELAY(1);
     387           0 :         if (i == 0)
     388           0 :                 printf("%s: codec reset timed out\n", sc->sc_dev.dv_xname);
     389           0 : }
     390             : 
     391             : 
     392             : int
     393           0 : auvia_waitready_codec(struct auvia_softc *sc)
     394             : {
     395             :         int i;
     396             : 
     397             :         /* poll until codec not busy */
     398           0 :         for (i = 0; (i < TIMEOUT) && (bus_space_read_4(sc->sc_iot, sc->sc_ioh,
     399           0 :              AUVIA_CODEC_CTL) & AUVIA_CODEC_BUSY); i++)
     400           0 :                 delay(1);
     401             : 
     402           0 :         if (i >= TIMEOUT) {
     403           0 :                 printf("%s: codec busy\n", sc->sc_dev.dv_xname);
     404           0 :                 return 1;
     405             :         }
     406             : 
     407           0 :         return 0;
     408           0 : }
     409             : 
     410             : 
     411             : int
     412           0 : auvia_waitvalid_codec(struct auvia_softc *sc)
     413             : {
     414             :         int i;
     415             : 
     416             :         /* poll until codec valid */
     417           0 :         for (i = 0; (i < TIMEOUT) && !(bus_space_read_4(sc->sc_iot, sc->sc_ioh,
     418           0 :              AUVIA_CODEC_CTL) & AUVIA_CODEC_PRIVALID); i++)
     419           0 :                 delay(1);
     420             : 
     421           0 :         if (i >= TIMEOUT) {
     422           0 :                 printf("%s: codec invalid\n", sc->sc_dev.dv_xname);
     423           0 :                 return 1;
     424             :         }
     425             : 
     426           0 :         return 0;
     427           0 : }
     428             : 
     429             : 
     430             : int
     431           0 : auvia_write_codec(void *addr, u_int8_t reg, u_int16_t val)
     432             : {
     433           0 :         struct auvia_softc *sc = addr;
     434             : 
     435           0 :         if (auvia_waitready_codec(sc))
     436           0 :                 return 1;
     437             : 
     438           0 :         bus_space_write_4(sc->sc_iot, sc->sc_ioh, AUVIA_CODEC_CTL,
     439             :             AUVIA_CODEC_PRIVALID | AUVIA_CODEC_INDEX(reg) | val);
     440             : 
     441           0 :         return 0;
     442           0 : }
     443             : 
     444             : 
     445             : int
     446           0 : auvia_read_codec(void *addr, u_int8_t reg, u_int16_t *val)
     447             : {
     448           0 :         struct auvia_softc *sc = addr;
     449             : 
     450           0 :         if (auvia_waitready_codec(sc))
     451           0 :                 return 1;
     452             : 
     453           0 :         bus_space_write_4(sc->sc_iot, sc->sc_ioh, AUVIA_CODEC_CTL,
     454             :             AUVIA_CODEC_PRIVALID | AUVIA_CODEC_READ | AUVIA_CODEC_INDEX(reg));
     455             : 
     456           0 :         if (auvia_waitready_codec(sc))
     457           0 :                 return 1;
     458             : 
     459           0 :         if (auvia_waitvalid_codec(sc))
     460           0 :                 return 1;
     461             : 
     462           0 :         *val = bus_space_read_2(sc->sc_iot, sc->sc_ioh, AUVIA_CODEC_CTL);
     463             : 
     464           0 :         return 0;
     465           0 : }
     466             : 
     467             : 
     468             : void
     469           0 : auvia_spdif_event(void *addr, int flag)
     470             : {
     471           0 :         struct auvia_softc *sc = addr;
     472           0 :         sc->sc_spdif = flag;
     473           0 : }
     474             : 
     475             : int
     476           0 : auvia_open(void *addr, int flags)
     477             : {
     478           0 :         struct auvia_softc *sc = addr;
     479           0 :         sc->codec_if->vtbl->lock(sc->codec_if);
     480           0 :         return 0;
     481             : }
     482             : 
     483             : 
     484             : void
     485           0 : auvia_close(void *addr)
     486             : {
     487           0 :         struct auvia_softc *sc = addr;
     488           0 :         sc->codec_if->vtbl->unlock(sc->codec_if);
     489             : 
     490             :         /* XXX: already called by audio_close() */
     491           0 :         auvia_halt_output(sc);
     492           0 :         auvia_halt_input(sc);
     493             : 
     494           0 :         sc->sc_play.sc_intr = NULL;
     495           0 :         sc->sc_record.sc_intr = NULL;
     496           0 : }
     497             : 
     498             : 
     499             : void
     500           0 : auvia_set_params_sub(struct auvia_softc *sc, struct auvia_softc_chan *ch,
     501             :                      struct audio_params *p)
     502             : {
     503             :         u_int32_t v;
     504             :         u_int16_t regval;
     505             : 
     506           0 :         if (!(sc->sc_flags & AUVIA_FLAGS_VT8233)) {
     507           0 :                 regval = (p->channels == 2 ? AUVIA_RPMODE_STEREO : 0)
     508           0 :                         | (p->precision == 16 ?
     509             :                                 AUVIA_RPMODE_16BIT : 0)
     510           0 :                         | AUVIA_RPMODE_INTR_FLAG | AUVIA_RPMODE_INTR_EOL
     511           0 :                         | AUVIA_RPMODE_AUTOSTART;
     512           0 :                 ch->sc_reg = regval;
     513           0 :         } else if (ch->sc_base != VIA8233_MP_BASE) {
     514           0 :                 v = CH_READ4(sc, ch, VIA8233_RP_RATEFMT);
     515           0 :                 v &= ~(VIA8233_RATEFMT_48K | VIA8233_RATEFMT_STEREO
     516             :                         | VIA8233_RATEFMT_16BIT);
     517             : 
     518           0 :                 v |= VIA8233_RATEFMT_48K * (p->sample_rate / 20)
     519           0 :                         / (48000 / 20);
     520           0 :                 if (p->channels == 2)
     521           0 :                         v |= VIA8233_RATEFMT_STEREO;
     522           0 :                 if (p->precision == 16)
     523           0 :                         v |= VIA8233_RATEFMT_16BIT;
     524             : 
     525           0 :                 CH_WRITE4(sc, ch, VIA8233_RP_RATEFMT, v);
     526           0 :         } else {
     527             :                 static const u_int32_t slottab[7] =
     528             :                         { 0, 0xff000011, 0xff000021, 0,
     529             :                           0xff004321, 0, 0xff436521};
     530             : 
     531           0 :                 regval = (p->precision == 16
     532             :                         ? VIA8233_MP_FORMAT_16BIT : VIA8233_MP_FORMAT_8BIT)
     533           0 :                         | (p->channels << 4);
     534           0 :                 CH_WRITE1(sc, ch, VIA8233_OFF_MP_FORMAT, regval);
     535           0 :                 CH_WRITE4(sc, ch, VIA8233_OFF_MP_STOP, slottab[p->channels]);
     536             :         }
     537           0 : }
     538             : 
     539             : int
     540           0 : auvia_set_params(void *addr, int setmode, int usemode,
     541             :     struct audio_params *play, struct audio_params *rec)
     542             : {
     543           0 :         struct auvia_softc *sc = addr;
     544             :         struct auvia_softc_chan *ch;
     545             :         struct audio_params *p;
     546           0 :         struct ac97_codec_if* codec = sc->codec_if;
     547             :         int reg, mode;
     548             :         u_int16_t ext_id;
     549             : 
     550             :         /* for mode in (RECORD, PLAY) */
     551           0 :         for (mode = AUMODE_RECORD; mode != -1;
     552           0 :              mode = mode == AUMODE_RECORD ? AUMODE_PLAY : -1) {
     553           0 :                 if ((setmode & mode) == 0)
     554             :                         continue;
     555             : 
     556           0 :                 if (mode == AUMODE_PLAY) {
     557             :                         p = play;
     558           0 :                         ch = &sc->sc_play;
     559             :                         reg = AC97_REG_PCM_FRONT_DAC_RATE;
     560           0 :                 } else {
     561             :                         p = rec;
     562           0 :                         ch = &sc->sc_record;
     563             :                         reg = AC97_REG_PCM_LR_ADC_RATE;
     564             :                 }
     565             : 
     566           0 :                 if (ch->sc_base == VIA8233_MP_BASE && mode == AUMODE_PLAY) {
     567           0 :                         ext_id = codec->vtbl->get_caps(codec);
     568           0 :                         if (p->channels == 1) {
     569             :                                 /* ok */
     570           0 :                         } else if (p->channels == 2) {
     571             :                                 /* ok */
     572           0 :                         } else if (p->channels == 4
     573           0 :                                 && ext_id & AC97_EXT_AUDIO_SDAC) {
     574             :                                 /* ok */
     575           0 :                         } else if (p->channels == 6
     576           0 :                                 && (ext_id & AC97_BITS_6CH) == AC97_BITS_6CH) {
     577             :                                 /* ok */
     578             :                         } else {
     579           0 :                                 p->channels = 2;
     580             :                         }
     581             :                 } else {
     582           0 :                         if (p->channels > 2)
     583           0 :                                 p->channels = 2;
     584             :                 }
     585             : 
     586           0 :                 if (p->sample_rate < 4000)
     587           0 :                         p->sample_rate = 4000;
     588           0 :                 if (p->sample_rate > 48000)
     589           0 :                         p->sample_rate = 48000;
     590           0 :                 if (p->precision > 16)
     591           0 :                         p->precision = 16;
     592             : 
     593             :                 /* XXX only 16-bit 48kHz slinear_le if s/pdif enabled ? */
     594           0 :                 if (sc->sc_spdif) {
     595           0 :                         p->sample_rate = 48000;
     596           0 :                         p->precision = 16;
     597           0 :                         p->encoding = AUDIO_ENCODING_SLINEAR_LE;
     598           0 :                 }
     599             : 
     600             :                 /* XXX only 16-bit 48kHz slinear_le if s/pdif enabled ? */
     601           0 :                 if (sc->sc_spdif &&
     602           0 :                     ((p->sample_rate != 48000) || (p->precision != 16) ||
     603           0 :                     (p->encoding != AUDIO_ENCODING_SLINEAR_LE)))
     604           0 :                         return (EINVAL);
     605             : 
     606           0 :                 if (AC97_IS_FIXED_RATE(codec)) {
     607           0 :                         p->sample_rate = AC97_SINGLE_RATE;
     608           0 :                 } else {
     609           0 :                         if (codec->vtbl->set_rate(codec, reg, &p->sample_rate))
     610           0 :                                 return (EINVAL);
     611             : 
     612           0 :                         if (ch->sc_base == VIA8233_MP_BASE &&
     613             :                             mode == AUMODE_PLAY) {
     614             :                                 reg = AC97_REG_PCM_SURR_DAC_RATE;
     615           0 :                                 if (p->channels >= 4
     616           0 :                                     && codec->vtbl->set_rate(codec, reg,
     617             :                                     &p->sample_rate))
     618           0 :                                         return (EINVAL);
     619             :                                 reg = AC97_REG_PCM_LFE_DAC_RATE;
     620           0 :                                 if (p->channels == 6
     621           0 :                                     && codec->vtbl->set_rate(codec, reg,
     622             :                                     &p->sample_rate))
     623           0 :                                 return (EINVAL);
     624             :                         }
     625             :                 }
     626             : 
     627           0 :                 switch (p->encoding) {
     628             :                 case AUDIO_ENCODING_SLINEAR_LE:
     629           0 :                         if (p->precision != 16)
     630           0 :                                 return EINVAL;
     631             :                         break;
     632             :                 case AUDIO_ENCODING_ULINEAR_LE:
     633             :                 case AUDIO_ENCODING_ULINEAR_BE:
     634           0 :                         if (p->precision != 8)
     635           0 :                                 return EINVAL;
     636             :                         break;
     637             :                 default:
     638           0 :                         return (EINVAL);
     639             :                 }
     640           0 :                 auvia_set_params_sub(sc, ch, p);
     641             : 
     642           0 :                 p->bps = AUDIO_BPS(p->precision);
     643           0 :                 p->msb = 1;
     644           0 :         }
     645             : 
     646           0 :         return 0;
     647           0 : }
     648             : 
     649             : 
     650             : int
     651           0 : auvia_round_blocksize(void *addr, int blk)
     652             : {
     653           0 :         struct auvia_softc *sc = addr;
     654             : 
     655           0 :         if (sc->bufsize / blk > AUVIA_DMALIST_MAX)
     656           0 :                 blk = sc->bufsize / AUVIA_DMALIST_MAX + 1;
     657           0 :         return ((blk + 31) & -32);
     658             : }
     659             : 
     660             : 
     661             : int
     662           0 : auvia_halt_output(void *addr)
     663             : {
     664           0 :         struct auvia_softc *sc = addr;
     665           0 :         struct auvia_softc_chan *ch = &(sc->sc_play);
     666             : 
     667           0 :         CH_WRITE1(sc, ch, AUVIA_RP_CONTROL, AUVIA_RPCTRL_TERMINATE);
     668           0 :         ch->sc_intr = NULL;
     669           0 :         return 0;
     670             : }
     671             : 
     672             : 
     673             : int
     674           0 : auvia_halt_input(void *addr)
     675             : {
     676           0 :         struct auvia_softc *sc = addr;
     677           0 :         struct auvia_softc_chan *ch = &(sc->sc_record);
     678             : 
     679           0 :         CH_WRITE1(sc, ch, AUVIA_RP_CONTROL, AUVIA_RPCTRL_TERMINATE);
     680           0 :         ch->sc_intr = NULL;
     681           0 :         return 0;
     682             : }
     683             : 
     684             : 
     685             : int
     686           0 : auvia_set_port(void *addr, mixer_ctrl_t *cp)
     687             : {
     688           0 :         struct auvia_softc *sc = addr;
     689             : 
     690           0 :         return (sc->codec_if->vtbl->mixer_set_port(sc->codec_if, cp));
     691             : }
     692             : 
     693             : 
     694             : int
     695           0 : auvia_get_port(void *addr, mixer_ctrl_t *cp)
     696             : {
     697           0 :         struct auvia_softc *sc = addr;
     698             : 
     699           0 :         return (sc->codec_if->vtbl->mixer_get_port(sc->codec_if, cp));
     700             : }
     701             : 
     702             : 
     703             : int
     704           0 : auvia_query_devinfo(void *addr, mixer_devinfo_t *dip)
     705             : {
     706           0 :         struct auvia_softc *sc = addr;
     707             : 
     708           0 :         return (sc->codec_if->vtbl->query_devinfo(sc->codec_if, dip));
     709             : }
     710             : 
     711             : 
     712             : void *
     713           0 : auvia_malloc(void *addr, int direction, size_t size, int pool, int flags)
     714             : {
     715           0 :         struct auvia_softc *sc = addr;
     716             :         struct auvia_dma *p;
     717             :         int error;
     718           0 :         int rseg;
     719             : 
     720           0 :         p = malloc(sizeof(*p), pool, flags);
     721           0 :         if (!p)
     722           0 :                 return 0;
     723             : 
     724           0 :         p->size = size;
     725           0 :         if ((error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &p->seg,
     726           0 :             1, &rseg, BUS_DMA_NOWAIT)) != 0) {
     727           0 :                 printf("%s: unable to allocate dma, error = %d\n",
     728           0 :                     sc->sc_dev.dv_xname, error);
     729           0 :                 goto fail_alloc;
     730             :         }
     731             : 
     732           0 :         if ((error = bus_dmamem_map(sc->sc_dmat, &p->seg, rseg, size, &p->addr,
     733           0 :             BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) {
     734           0 :                 printf("%s: unable to map dma, error = %d\n",
     735           0 :                     sc->sc_dev.dv_xname, error);
     736           0 :                 goto fail_map;
     737             :         }
     738             : 
     739           0 :         if ((error = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0,
     740           0 :             BUS_DMA_NOWAIT, &p->map)) != 0) {
     741           0 :                 printf("%s: unable to create dma map, error = %d\n",
     742           0 :                     sc->sc_dev.dv_xname, error);
     743           0 :                 goto fail_create;
     744             :         }
     745             : 
     746           0 :         if ((error = bus_dmamap_load(sc->sc_dmat, p->map, p->addr, size, NULL,
     747           0 :             BUS_DMA_NOWAIT)) != 0) {
     748           0 :                 printf("%s: unable to load dma map, error = %d\n",
     749           0 :                     sc->sc_dev.dv_xname, error);
     750             :                 goto fail_load;
     751             :         }
     752             : 
     753           0 :         p->next = sc->sc_dmas;
     754           0 :         sc->sc_dmas = p;
     755             : 
     756           0 :         return p->addr;
     757             : 
     758             : 
     759             : fail_load:
     760           0 :         bus_dmamap_destroy(sc->sc_dmat, p->map);
     761             : fail_create:
     762           0 :         bus_dmamem_unmap(sc->sc_dmat, p->addr, size);
     763             : fail_map:
     764           0 :         bus_dmamem_free(sc->sc_dmat, &p->seg, 1);
     765             : fail_alloc:
     766           0 :         free(p, pool, 0);
     767           0 :         return 0;
     768           0 : }
     769             : 
     770             : 
     771             : void
     772           0 : auvia_free(void *addr, void *ptr, int pool)
     773             : {
     774           0 :         struct auvia_softc *sc = addr;
     775             :         struct auvia_dma **pp, *p;
     776             : 
     777           0 :         for (pp = &(sc->sc_dmas); (p = *pp) != NULL; pp = &p->next)
     778           0 :                 if (p->addr == ptr) {
     779           0 :                         bus_dmamap_unload(sc->sc_dmat, p->map);
     780           0 :                         bus_dmamap_destroy(sc->sc_dmat, p->map);
     781           0 :                         bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
     782           0 :                         bus_dmamem_free(sc->sc_dmat, &p->seg, 1);
     783             : 
     784           0 :                         *pp = p->next;
     785           0 :                         free(p, pool, 0);
     786             :                         return;
     787             :                 }
     788             : 
     789           0 :         panic("auvia_free: trying to free unallocated memory");
     790           0 : }
     791             : 
     792             : size_t
     793           0 : auvia_round_buffersize(void *addr, int direction, size_t bufsize)
     794             : {
     795           0 :         struct auvia_softc *sc = addr;
     796             : 
     797           0 :         sc->bufsize = bufsize;
     798           0 :         return bufsize;
     799             : }
     800             : 
     801             : int
     802           0 : auvia_get_props(void *addr)
     803             : {
     804             :         int props;
     805             : 
     806             :         props = AUDIO_PROP_MMAP|AUDIO_PROP_INDEPENDENT|AUDIO_PROP_FULLDUPLEX;
     807             : 
     808           0 :         return  props;
     809             : }
     810             : 
     811             : 
     812             : int
     813           0 : auvia_build_dma_ops(struct auvia_softc *sc, struct auvia_softc_chan *ch,
     814             :     struct auvia_dma *p, void *start, void *end, int blksize)
     815             : {
     816             :         struct auvia_dma_op *op;
     817             :         struct auvia_dma *dp;
     818             :         bus_addr_t s;
     819             :         size_t l;
     820             :         int segs;
     821             : 
     822           0 :         s = p->map->dm_segs[0].ds_addr;
     823           0 :         l = (vaddr_t)end - (vaddr_t)start;
     824           0 :         segs = howmany(l, blksize);
     825           0 :         if (segs > AUVIA_DMALIST_MAX) {
     826           0 :                 panic("%s: build_dma_ops: too many DMA segments",
     827           0 :                             sc->sc_dev.dv_xname);
     828             :         }
     829             : 
     830           0 :         if (segs > ch->sc_dma_op_count) {
     831             :                 /* if old list was too small, free it */
     832           0 :                 if (ch->sc_dma_ops)
     833           0 :                         auvia_free(sc, ch->sc_dma_ops, M_DEVBUF);
     834             : 
     835           0 :                 ch->sc_dma_ops = auvia_malloc(sc, 0,
     836           0 :                     sizeof(struct auvia_dma_op) * segs, M_DEVBUF, M_WAITOK);
     837             : 
     838           0 :                 for (dp = sc->sc_dmas; dp &&
     839           0 :                      dp->addr != (void *)(ch->sc_dma_ops); dp = dp->next)
     840             :                         ;
     841             : 
     842           0 :                 if (!dp)
     843           0 :                         panic("%s: build_dma_ops: where'd my memory go??? "
     844           0 :                             "address (%p)", sc->sc_dev.dv_xname,
     845           0 :                             ch->sc_dma_ops);
     846             : 
     847           0 :                 ch->sc_dma_op_count = segs;
     848           0 :                 ch->sc_dma_ops_dma = dp;
     849           0 :         }
     850             : 
     851           0 :         op = ch->sc_dma_ops;
     852             : 
     853           0 :         while (l) {
     854           0 :                 op->ptr = htole32(s);
     855           0 :                 l = l - min(l, blksize);
     856             :                 /* if last block */
     857           0 :                 op->flags = htole32((l? AUVIA_DMAOP_FLAG : AUVIA_DMAOP_EOL) | blksize);
     858           0 :                 s += blksize;
     859           0 :                 op++;
     860             :         }
     861             : 
     862           0 :         return 0;
     863             : }
     864             : 
     865             : 
     866             : int
     867           0 : auvia_trigger_output(void *addr, void *start, void *end, int blksize,
     868             :     void (*intr)(void *), void *arg, struct audio_params *param)
     869             : {
     870           0 :         struct auvia_softc *sc = addr;
     871           0 :         struct auvia_softc_chan *ch = &(sc->sc_play);
     872             :         struct auvia_dma *p;
     873             : 
     874           0 :         for (p = sc->sc_dmas; p && p->addr != start; p = p->next)
     875             :                 ;
     876             : 
     877           0 :         if (!p)
     878           0 :                 panic("auvia_trigger_output: request with bad start "
     879             :                     "address (%p)", start);
     880             : 
     881           0 :         if (auvia_build_dma_ops(sc, ch, p, start, end, blksize)) {
     882           0 :                 return 1;
     883             :         }
     884             : 
     885           0 :         ch->sc_intr = intr;
     886           0 :         ch->sc_arg = arg;
     887             : 
     888           0 :         CH_WRITE4(sc, ch, AUVIA_RP_DMAOPS_BASE,
     889             :             ch->sc_dma_ops_dma->map->dm_segs[0].ds_addr);
     890           0 :         mtx_enter(&audio_lock);
     891           0 :         if (sc->sc_flags & AUVIA_FLAGS_VT8233) {
     892           0 :                 if (ch->sc_base != VIA8233_MP_BASE) {
     893           0 :                         CH_WRITE1(sc, ch, VIA8233_RP_DXS_LVOL, 0);
     894           0 :                         CH_WRITE1(sc, ch, VIA8233_RP_DXS_RVOL, 0);
     895           0 :                 }
     896           0 :                 CH_WRITE1(sc, ch, AUVIA_RP_CONTROL,
     897             :                     AUVIA_RPCTRL_START | AUVIA_RPCTRL_AUTOSTART |
     898             :                     AUVIA_RPCTRL_STOP  | AUVIA_RPCTRL_EOL | AUVIA_RPCTRL_FLAG);
     899           0 :         } else {
     900           0 :                 CH_WRITE1(sc, ch, AUVIA_RP_MODE, ch->sc_reg);
     901           0 :                 CH_WRITE1(sc, ch, AUVIA_RP_CONTROL, AUVIA_RPCTRL_START);
     902             :         }
     903           0 :         mtx_leave(&audio_lock);
     904           0 :         return 0;
     905           0 : }
     906             : 
     907             : 
     908             : int
     909           0 : auvia_trigger_input(void *addr, void *start, void *end, int blksize,
     910             :     void (*intr)(void *), void *arg, struct audio_params *param)
     911             : {
     912           0 :         struct auvia_softc *sc = addr;
     913           0 :         struct auvia_softc_chan *ch = &(sc->sc_record);
     914             :         struct auvia_dma *p;
     915             : 
     916           0 :         for (p = sc->sc_dmas; p && p->addr != start; p = p->next)
     917             :                 ;
     918             : 
     919           0 :         if (!p)
     920           0 :                 panic("auvia_trigger_input: request with bad start "
     921             :                     "address (%p)", start);
     922             : 
     923           0 :         if (auvia_build_dma_ops(sc, ch, p, start, end, blksize))
     924           0 :                 return 1;
     925             : 
     926           0 :         ch->sc_intr = intr;
     927           0 :         ch->sc_arg = arg;
     928             : 
     929           0 :         CH_WRITE4(sc, ch, AUVIA_RP_DMAOPS_BASE,
     930             :                   ch->sc_dma_ops_dma->map->dm_segs[0].ds_addr);
     931             : 
     932           0 :         mtx_enter(&audio_lock);
     933           0 :         if (sc->sc_flags & AUVIA_FLAGS_VT8233) {
     934           0 :                 if (ch->sc_base != VIA8233_MP_BASE) {
     935           0 :                         CH_WRITE1(sc, ch, VIA8233_RP_DXS_LVOL, 0);
     936           0 :                         CH_WRITE1(sc, ch, VIA8233_RP_DXS_RVOL, 0);
     937           0 :                 }
     938           0 :                 CH_WRITE1(sc, ch, AUVIA_RP_CONTROL,
     939             :                     AUVIA_RPCTRL_START | AUVIA_RPCTRL_AUTOSTART |
     940             :                     AUVIA_RPCTRL_STOP  | AUVIA_RPCTRL_EOL | AUVIA_RPCTRL_FLAG);
     941           0 :         } else {
     942           0 :                 CH_WRITE1(sc, ch, AUVIA_RP_MODE, ch->sc_reg);
     943           0 :                 CH_WRITE1(sc, ch, AUVIA_RP_CONTROL, AUVIA_RPCTRL_START);
     944             :         }
     945           0 :         mtx_leave(&audio_lock);
     946           0 :         return 0;
     947           0 : }
     948             : 
     949             : 
     950             : int
     951           0 : auvia_intr(void *arg)
     952             : {
     953           0 :         struct auvia_softc *sc = arg;
     954             :         struct auvia_softc_chan *ch;
     955             :         u_int8_t r;
     956             :         int i = 0;
     957             : 
     958           0 :         mtx_enter(&audio_lock);
     959           0 :         ch = &sc->sc_record;
     960           0 :         r = CH_READ1(sc, ch, AUVIA_RP_STAT);
     961           0 :         if (r & AUVIA_RPSTAT_INTR) {
     962           0 :                 if (sc->sc_record.sc_intr)
     963           0 :                         sc->sc_record.sc_intr(sc->sc_record.sc_arg);
     964             : 
     965             :                 /* clear interrupts */
     966           0 :                 CH_WRITE1(sc, ch, AUVIA_RP_STAT, AUVIA_RPSTAT_INTR);
     967             : 
     968             :                 i++;
     969           0 :         }
     970           0 :         ch = &sc->sc_play;
     971           0 :         r = CH_READ1(sc, ch, AUVIA_RP_STAT);
     972           0 :         if (r & AUVIA_RPSTAT_INTR) {
     973           0 :                 if (sc->sc_play.sc_intr)
     974           0 :                         sc->sc_play.sc_intr(sc->sc_play.sc_arg);
     975             : 
     976             :                 /* clear interrupts */
     977           0 :                 CH_WRITE1(sc, ch, AUVIA_RP_STAT, AUVIA_RPSTAT_INTR);
     978             : 
     979           0 :                 i++;
     980           0 :         }
     981           0 :         mtx_leave(&audio_lock);
     982           0 :         return (i? 1 : 0);
     983             : }
     984             : 
     985             : void
     986           0 : auvia_resume(struct auvia_softc *sc)
     987             : {
     988           0 :         pci_conf_read(sc->sc_pc, sc->sc_pt, AUVIA_PCICONF_JUNK);
     989           0 :         pci_conf_write(sc->sc_pc, sc->sc_pt, AUVIA_PCICONF_JUNK,
     990           0 :             sc->sc_pci_junk);
     991             : 
     992           0 :         ac97_resume(&sc->host_if, sc->codec_if);
     993           0 : }
     994             : 

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