/* $OpenBSD: btsco.c,v 1.5 2010/07/15 03:43:11 jakemsr Exp $ */ /* $NetBSD: btsco.c,v 1.22 2008/08/06 15:01:23 plunky Exp $ */ /*- * Copyright (c) 2006 Itronix Inc. * All rights reserved. * * Written by Iain Hibbert for Itronix Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of Itronix Inc. may not be used to endorse * or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include typedef struct audio_params audio_params_t; struct audio_format { void *driver_data; int32_t mode; u_int encoding; u_int validbits; u_int precision; u_int channels; u_int channel_mask; #define AUFMT_UNKNOWN_POSITION 0U #define AUFMT_FRONT_LEFT 0x00001U /* USB audio compatible */ #define AUFMT_FRONT_RIGHT 0x00002U /* USB audio compatible */ #define AUFMT_FRONT_CENTER 0x00004U /* USB audio compatible */ #define AUFMT_LOW_FREQUENCY 0x00008U /* USB audio compatible */ #define AUFMT_BACK_LEFT 0x00010U /* USB audio compatible */ #define AUFMT_BACK_RIGHT 0x00020U /* USB audio compatible */ #define AUFMT_FRONT_LEFT_OF_CENTER 0x00040U /* USB audio compatible */ #define AUFMT_FRONT_RIGHT_OF_CENTER 0x00080U /* USB audio compatible */ #define AUFMT_BACK_CENTER 0x00100U /* USB audio compatible */ #define AUFMT_SIDE_LEFT 0x00200U /* USB audio compatible */ #define AUFMT_SIDE_RIGHT 0x00400U /* USB audio compatible */ #define AUFMT_TOP_CENTER 0x00800U /* USB audio compatible */ #define AUFMT_TOP_FRONT_LEFT 0x01000U #define AUFMT_TOP_FRONT_CENTER 0x02000U #define AUFMT_TOP_FRONT_RIGHT 0x04000U #define AUFMT_TOP_BACK_LEFT 0x08000U #define AUFMT_TOP_BACK_CENTER 0x10000U #define AUFMT_TOP_BACK_RIGHT 0x20000U #define AUFMT_MONAURAL AUFMT_FRONT_CENTER #define AUFMT_STEREO (AUFMT_FRONT_LEFT | AUFMT_FRONT_RIGHT) #define AUFMT_SURROUND4 (AUFMT_STEREO | AUFMT_BACK_LEFT \ | AUFMT_BACK_RIGHT) #define AUFMT_DOLBY_5_1 (AUFMT_SURROUND4 | AUFMT_FRONT_CENTER \ | AUFMT_LOW_FREQUENCY) /** * 0: frequency[0] is lower limit, and frequency[1] is higher limit. * 1-16: frequency[0] to frequency[frequency_type-1] are valid. */ u_int frequency_type; #define AUFMT_MAX_FREQUENCIES 16 /** * sampling rates */ u_int frequency[AUFMT_MAX_FREQUENCIES]; }; #undef DPRINTF #undef DPRINTFN #ifdef BTSCO_DEBUG int btsco_debug = BTSCO_DEBUG; #define DPRINTF(fmt, args...) do { \ if (btsco_debug) \ printf("%s: "fmt, __func__ , ##args); \ } while (/* CONSTCOND */0) #define DPRINTFN(n, fmt, args...) do { \ if (btsco_debug > (n)) \ printf("%s: "fmt, __func__ , ##args); \ } while (/* CONSTCOND */0) #else #define DPRINTF(...) #define DPRINTFN(...) #endif /***************************************************************************** * * Bluetooth SCO Audio device */ /* btsco softc */ struct btsco_softc { struct device sc_dev; struct device *sc_audio; /* MI audio device */ uint16_t sc_flags; const char *sc_name; /* our device_xname */ void *sc_intr; /* interrupt cookie */ struct timeout sc_intr_to; /* interrupt trigger */ int sc_connect; /* connect wait */ /* Bluetooth */ bdaddr_t sc_laddr; /* local address */ bdaddr_t sc_raddr; /* remote address */ uint16_t sc_state; /* link state */ struct sco_pcb *sc_sco; /* SCO handle */ struct sco_pcb *sc_sco_l; /* SCO listen handle */ uint16_t sc_mtu; /* SCO mtu */ uint8_t sc_channel; /* RFCOMM channel */ int sc_err; /* stored error */ /* Receive */ int sc_rx_want; /* bytes wanted */ uint8_t *sc_rx_block; /* receive block */ void (*sc_rx_intr)(void *); /* callback */ void *sc_rx_intrarg; /* callback arg */ struct mbuf *sc_rx_mbuf; /* leftover mbuf */ /* Transmit */ int sc_tx_size; /* bytes to send */ int sc_tx_pending; /* packets pending */ uint8_t *sc_tx_block; /* transmit block */ void (*sc_tx_intr)(void *); /* callback */ void *sc_tx_intrarg; /* callback arg */ void *sc_tx_buf; /* transmit buffer */ int sc_tx_refcnt; /* buffer refcnt */ /* mixer data */ int sc_vgs; /* speaker volume */ int sc_vgm; /* mic volume */ }; /* sc_state */ #define BTSCO_CLOSED 0 #define BTSCO_WAIT_CONNECT 1 #define BTSCO_OPEN 2 /* sc_flags */ #define BTSCO_LISTEN (1 << 1) /* autoconf(9) glue */ int btsco_match(struct device *, void *, void *); void btsco_attach(struct device *, struct device *, void *); int btsco_detach(struct device *, int); struct cfattach btsco_ca = { sizeof(struct btsco_softc), btsco_match, btsco_attach, btsco_detach }; struct cfdriver btsco_cd = { NULL, "btsco", DV_DULL }; /* audio(9) glue */ static int btsco_open(void *, int); static void btsco_close(void *); static int btsco_query_encoding(void *, struct audio_encoding *); static int btsco_set_params(void *, int, int, audio_params_t *, audio_params_t *); static int btsco_round_blocksize(void *, int); static int btsco_start_output(void *, void *, int, void (*)(void *), void *); static int btsco_start_input(void *, void *, int, void (*)(void *), void *); static int btsco_halt_output(void *); static int btsco_halt_input(void *); static int btsco_getdev(void *, struct audio_device *); static int btsco_setfd(void *, int); static int btsco_set_port(void *, mixer_ctrl_t *); static int btsco_get_port(void *, mixer_ctrl_t *); static int btsco_query_devinfo(void *, mixer_devinfo_t *); static void *btsco_allocm(void *, int, size_t, int, int); static void btsco_freem(void *, void *, int); static int btsco_get_props(void *); #ifdef notyet static int btsco_dev_ioctl(void *, u_long, void *, int, struct proc *); #endif struct audio_hw_if btsco_if = { btsco_open, /* open */ btsco_close, /* close */ NULL, /* drain */ btsco_query_encoding, /* query_encoding */ btsco_set_params, /* set_params */ btsco_round_blocksize, /* round_blocksize */ NULL, /* commit_settings */ NULL, /* init_output */ NULL, /* init_input */ btsco_start_output, /* start_output */ btsco_start_input, /* start_input */ btsco_halt_output, /* halt_output */ btsco_halt_input, /* halt_input */ NULL, /* speaker_ctl */ btsco_getdev, /* getdev */ btsco_setfd, /* setfd */ btsco_set_port, /* set_port */ btsco_get_port, /* get_port */ btsco_query_devinfo, /* query_devinfo */ btsco_allocm, /* allocm */ btsco_freem, /* freem */ NULL, /* round_buffersize */ NULL, /* mappage */ btsco_get_props, /* get_props */ NULL, /* trigger_output */ NULL, /* trigger_input */ NULL /* get_default_params */ }; static const struct audio_device btsco_device = { "Bluetooth Audio", "", "btsco" }; /* Voice_Setting == 0x0060: 8000Hz, mono, 16-bit, slinear_le */ static const struct audio_format btsco_format = { NULL, /* driver_data */ (AUMODE_PLAY | AUMODE_RECORD), /* mode */ AUDIO_ENCODING_SLINEAR_LE, /* encoding */ 16, /* validbits */ 16, /* precision */ 1, /* channels */ AUFMT_MONAURAL, /* channel_mask */ 1, /* frequency_type */ { 8000 } /* frequency */ }; /* bluetooth(9) glue for SCO */ static void btsco_sco_connecting(void *); static void btsco_sco_connected(void *); static void btsco_sco_disconnected(void *, int); static void *btsco_sco_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *); static void btsco_sco_complete(void *, int); static void btsco_sco_linkmode(void *, int); static void btsco_sco_input(void *, struct mbuf *); static const struct btproto btsco_sco_proto = { btsco_sco_connecting, btsco_sco_connected, btsco_sco_disconnected, btsco_sco_newconn, btsco_sco_complete, btsco_sco_linkmode, btsco_sco_input, }; /***************************************************************************** * * btsco definitions */ /* * btsco mixer class */ #define BTSCO_VGS 0 #define BTSCO_VGM 1 #define BTSCO_INPUT_CLASS 2 #define BTSCO_OUTPUT_CLASS 3 /* connect timeout */ #define BTSCO_TIMEOUT (30 * hz) /* misc btsco functions */ static void btsco_extfree(caddr_t, u_int, void *); static void btsco_intr(void *); /***************************************************************************** * * btsco autoconf(9) routines */ int btsco_match(struct device *self, void *cfdata, void *aux) { struct btdev_attach_args *bda = (struct btdev_attach_args *)aux; if (bda->bd_type == BTDEV_HSET || bda->bd_type == BTDEV_HF) return 1; return 0; } void btsco_attach(struct device *parent, struct device *self, void *aux) { struct btsco_softc *sc = (struct btsco_softc *)self; struct btdev_attach_args *bda = aux; /* * Init softc */ sc->sc_vgs = 200; sc->sc_vgm = 200; sc->sc_state = BTSCO_CLOSED; sc->sc_name = self->dv_xname; /* * copy in our configuration info */ bdaddr_copy(&sc->sc_laddr, &bda->bd_laddr); bdaddr_copy(&sc->sc_raddr, &bda->bd_raddr); if (bda->bd_type == BTDEV_HF) { sc->sc_flags |= BTSCO_LISTEN; printf(" listen mode"); } if (bda->bd_hset.hset_channel < RFCOMM_CHANNEL_MIN || bda->bd_hset.hset_channel > RFCOMM_CHANNEL_MAX) { printf(" invalid channel"); return; } sc->sc_channel = bda->bd_hset.hset_channel; printf(" channel %d\n", sc->sc_channel); /* * set up transmit interrupt */ timeout_set(&sc->sc_intr_to, btsco_intr, sc); /* * attach audio device */ sc->sc_audio = audio_attach_mi(&btsco_if, sc, self); if (sc->sc_audio == NULL) { printf("%s: audio_attach_mi failed\n", sc->sc_dev.dv_xname); return; } } int btsco_detach(struct device *self, int flags) { struct btsco_softc *sc = (struct btsco_softc *)self; DPRINTF("sc=%p\n", sc); mutex_enter(&bt_lock); if (sc->sc_sco != NULL) { DPRINTF("sc_sco=%p\n", sc->sc_sco); sco_disconnect(sc->sc_sco, 0); sco_detach(&sc->sc_sco); sc->sc_sco = NULL; } if (sc->sc_sco_l != NULL) { DPRINTF("sc_sco_l=%p\n", sc->sc_sco_l); sco_detach(&sc->sc_sco_l); sc->sc_sco_l = NULL; } mutex_exit(&bt_lock); if (sc->sc_audio != NULL) { DPRINTF("sc_audio=%p\n", sc->sc_audio); config_detach(sc->sc_audio, flags); sc->sc_audio = NULL; } timeout_del(&sc->sc_intr_to); if (sc->sc_rx_mbuf != NULL) { m_freem(sc->sc_rx_mbuf); sc->sc_rx_mbuf = NULL; } if (sc->sc_tx_refcnt > 0) { printf("%s: tx_refcnt=%d!\n", sc->sc_dev.dv_xname, sc->sc_tx_refcnt); if ((flags & DETACH_FORCE) == 0) return EAGAIN; } return 0; } /***************************************************************************** * * bluetooth(9) methods for SCO * * All these are called from Bluetooth Protocol code, in a soft * interrupt context at IPL_SOFTNET. */ static void btsco_sco_connecting(void *arg) { /* struct btsco_softc *sc = arg; */ /* dont care */ } static void btsco_sco_connected(void *arg) { struct btsco_softc *sc = arg; DPRINTF("%s\n", sc->sc_name); KASSERT(sc->sc_sco != NULL); KASSERT(sc->sc_state == BTSCO_WAIT_CONNECT); /* * If we are listening, no more need */ if (sc->sc_sco_l != NULL) sco_detach(&sc->sc_sco_l); sc->sc_state = BTSCO_OPEN; wakeup(&sc->sc_connect); } static void btsco_sco_disconnected(void *arg, int err) { struct btsco_softc *sc = arg; int s; DPRINTF("%s sc_state %d\n", sc->sc_name, sc->sc_state); KASSERT(sc->sc_sco != NULL); sc->sc_err = err; sco_detach(&sc->sc_sco); switch (sc->sc_state) { case BTSCO_CLOSED: /* dont think this can happen */ break; case BTSCO_WAIT_CONNECT: /* connect failed */ wakeup(&sc->sc_connect); break; case BTSCO_OPEN: /* link lost */ /* * If IO is in progress, tell the audio driver that it * has completed so that when it tries to send more, we * can indicate an error. */ s = splaudio(); if (sc->sc_tx_pending > 0) { sc->sc_tx_pending = 0; (*sc->sc_tx_intr)(sc->sc_tx_intrarg); } if (sc->sc_rx_want > 0) { sc->sc_rx_want = 0; (*sc->sc_rx_intr)(sc->sc_rx_intrarg); } splx(s); break; default: UNKNOWN(sc->sc_state); } sc->sc_state = BTSCO_CLOSED; } static void * btsco_sco_newconn(void *arg, struct sockaddr_bt *laddr, struct sockaddr_bt *raddr) { struct btsco_softc *sc = arg; DPRINTF("%s\n", sc->sc_name); if (bdaddr_same(&raddr->bt_bdaddr, &sc->sc_raddr) == 0 || sc->sc_state != BTSCO_WAIT_CONNECT || sc->sc_sco != NULL) return NULL; sco_attach(&sc->sc_sco, &btsco_sco_proto, sc); return sc->sc_sco; } static void btsco_sco_complete(void *arg, int count) { struct btsco_softc *sc = arg; int s; DPRINTFN(10, "%s count %d\n", sc->sc_name, count); s = splaudio(); if (sc->sc_tx_pending > 0) { sc->sc_tx_pending -= count; if (sc->sc_tx_pending == 0) (*sc->sc_tx_intr)(sc->sc_tx_intrarg); } splx(s); } static void btsco_sco_linkmode(void *arg, int new) { /* struct btsco_softc *sc = arg; */ /* dont care */ } static void btsco_sco_input(void *arg, struct mbuf *m) { struct btsco_softc *sc = arg; int len, s; DPRINTFN(10, "%s len=%d\n", sc->sc_name, m->m_pkthdr.len); s = splaudio(); if (sc->sc_rx_want == 0) { m_freem(m); } else { KASSERT(sc->sc_rx_intr != NULL); KASSERT(sc->sc_rx_block != NULL); len = MIN(sc->sc_rx_want, m->m_pkthdr.len); m_copydata(m, 0, len, sc->sc_rx_block); sc->sc_rx_want -= len; sc->sc_rx_block += len; if (len > m->m_pkthdr.len) { if (sc->sc_rx_mbuf != NULL) m_freem(sc->sc_rx_mbuf); m_adj(m, len); sc->sc_rx_mbuf = m; } else { m_freem(m); } if (sc->sc_rx_want == 0) (*sc->sc_rx_intr)(sc->sc_rx_intrarg); } splx(s); } /***************************************************************************** * * audio(9) methods * */ static int btsco_open(void *hdl, int flags) { struct sockaddr_bt sa; struct btsco_softc *sc = hdl; int err, timo; DPRINTF("%s flags 0x%x\n", sc->sc_name, flags); /* flags FREAD & FWRITE? */ if (sc->sc_sco != NULL || sc->sc_sco_l != NULL) return EIO; mutex_enter(&bt_lock); memset(&sa, 0, sizeof(sa)); sa.bt_len = sizeof(sa); sa.bt_family = AF_BLUETOOTH; bdaddr_copy(&sa.bt_bdaddr, &sc->sc_laddr); if (sc->sc_flags & BTSCO_LISTEN) { err = sco_attach(&sc->sc_sco_l, &btsco_sco_proto, sc); if (err) goto done; err = sco_bind(sc->sc_sco_l, &sa); if (err) { sco_detach(&sc->sc_sco_l); goto done; } err = sco_listen(sc->sc_sco_l); if (err) { sco_detach(&sc->sc_sco_l); goto done; } timo = 0; /* no timeout */ } else { err = sco_attach(&sc->sc_sco, &btsco_sco_proto, sc); if (err) goto done; err = sco_bind(sc->sc_sco, &sa); if (err) { sco_detach(&sc->sc_sco); goto done; } bdaddr_copy(&sa.bt_bdaddr, &sc->sc_raddr); err = sco_connect(sc->sc_sco, &sa); if (err) { sco_detach(&sc->sc_sco); goto done; } timo = BTSCO_TIMEOUT; } sc->sc_state = BTSCO_WAIT_CONNECT; while (err == 0 && sc->sc_state == BTSCO_WAIT_CONNECT) err = msleep(&sc->sc_connect, &bt_lock, PWAIT, "connect", timo); switch (sc->sc_state) { case BTSCO_CLOSED: /* disconnected */ err = sc->sc_err; /* fall through to */ case BTSCO_WAIT_CONNECT: /* error */ if (sc->sc_sco != NULL) sco_detach(&sc->sc_sco); if (sc->sc_sco_l != NULL) sco_detach(&sc->sc_sco_l); break; case BTSCO_OPEN: /* hurrah */ (void)sco_getopt(sc->sc_sco, SO_SCO_MTU, &sc->sc_mtu); break; default: UNKNOWN(sc->sc_state); break; } done: mutex_exit(&bt_lock); DPRINTF("done err=%d, sc_state=%d, sc_mtu=%d\n", err, sc->sc_state, sc->sc_mtu); return err; } static void btsco_close(void *hdl) { struct btsco_softc *sc = hdl; DPRINTF("%s\n", sc->sc_name); mutex_enter(&bt_lock); if (sc->sc_sco != NULL) { sco_disconnect(sc->sc_sco, 0); sco_detach(&sc->sc_sco); } if (sc->sc_sco_l != NULL) { sco_detach(&sc->sc_sco_l); } mutex_exit(&bt_lock); if (sc->sc_rx_mbuf != NULL) { m_freem(sc->sc_rx_mbuf); sc->sc_rx_mbuf = NULL; } sc->sc_rx_want = 0; sc->sc_rx_block = NULL; sc->sc_rx_intr = NULL; sc->sc_rx_intrarg = NULL; sc->sc_tx_size = 0; sc->sc_tx_block = NULL; sc->sc_tx_pending = 0; sc->sc_tx_intr = NULL; sc->sc_tx_intrarg = NULL; } static int btsco_query_encoding(void *hdl, struct audio_encoding *ae) { /* struct btsco_softc *sc = hdl; */ int err = 0; switch (ae->index) { case 0: strlcpy(ae->name, AudioEslinear_le, sizeof(ae->name)); ae->encoding = AUDIO_ENCODING_SLINEAR_LE; ae->precision = 16; ae->flags = 0; break; default: err = EINVAL; } ae->bps = AUDIO_BPS(ae->precision); ae->msb = 1; return err; } static int btsco_set_params(void *hdl, int setmode, int usemode, audio_params_t *play, audio_params_t *rec) { int i, mode; struct audio_params *p; DPRINTF("setmode 0x%x usemode 0x%x\n", setmode, usemode); DPRINTF("rate %d, precision %d, channels %d encoding %d\n", play->sample_rate, play->precision, play->channels, play->encoding); /* * If we had a list of formats, we could check the HCI_Voice_Setting * and select the appropriate one to use. Currently only one is * supported: 0x0060 == 8000Hz, mono, 16-bit, slinear_le */ for (i = 0; i < 2; i++) { if (i) { mode = AUMODE_RECORD; p = rec; } else { mode = AUMODE_PLAY; p = play; } if (!(setmode & mode)) continue; p->sample_rate = 8000; p->encoding = AUDIO_ENCODING_SLINEAR_LE; p->precision = 16; p->bps = 2; p->msb = 1; p->channels = 1; } return 0; } /* * If we have an MTU value to use, round the blocksize to that. */ static int btsco_round_blocksize(void *hdl, int bs) { struct btsco_softc *sc = hdl; if (sc->sc_mtu > 0) { bs = (bs / sc->sc_mtu) * sc->sc_mtu; if (bs == 0) bs = sc->sc_mtu; } DPRINTF("%s bs=%d, sc_mtu=%d\n", sc->sc_name, bs, sc->sc_mtu); return bs; } /* * Start Output * * We dont want to be calling the network stack at splaudio() so make * a note of what is to be sent, and schedule an interrupt to bundle * it up and queue it. */ static int btsco_start_output(void *hdl, void *block, int blksize, void (*intr)(void *), void *intrarg) { struct btsco_softc *sc = hdl; DPRINTFN(5, "%s blksize %d\n", sc->sc_name, blksize); if (sc->sc_sco == NULL) return ENOTCONN; /* connection lost */ sc->sc_tx_block = block; sc->sc_tx_pending = 0; sc->sc_tx_size = blksize; sc->sc_tx_intr = intr; sc->sc_tx_intrarg = intrarg; timeout_add(&sc->sc_intr_to, 0); return 0; } /* * Start Input * * When the SCO link is up, we are getting data in any case, so all we do * is note what we want and where to put it and let the sco_input routine * fill in the data. * * If there was any leftover data that didnt fit in the last block, retry * it now. */ static int btsco_start_input(void *hdl, void *block, int blksize, void (*intr)(void *), void *intrarg) { struct btsco_softc *sc = hdl; struct mbuf *m; DPRINTFN(5, "%s blksize %d\n", sc->sc_name, blksize); if (sc->sc_sco == NULL) return ENOTCONN; sc->sc_rx_want = blksize; sc->sc_rx_block = block; sc->sc_rx_intr = intr; sc->sc_rx_intrarg = intrarg; if (sc->sc_rx_mbuf != NULL) { m = sc->sc_rx_mbuf; sc->sc_rx_mbuf = NULL; btsco_sco_input(sc, m); } return 0; } /* * Halt Output * * This doesnt really halt the output, but it will look * that way to the audio driver. The current block will * still be transmitted. */ static int btsco_halt_output(void *hdl) { struct btsco_softc *sc = hdl; DPRINTFN(5, "%s\n", sc->sc_name); sc->sc_tx_size = 0; sc->sc_tx_block = NULL; sc->sc_tx_pending = 0; sc->sc_tx_intr = NULL; sc->sc_tx_intrarg = NULL; return 0; } /* * Halt Input * * This doesnt really halt the input, but it will look * that way to the audio driver. Incoming data will be * discarded. */ static int btsco_halt_input(void *hdl) { struct btsco_softc *sc = hdl; DPRINTFN(5, "%s\n", sc->sc_name); sc->sc_rx_want = 0; sc->sc_rx_block = NULL; sc->sc_rx_intr = NULL; sc->sc_rx_intrarg = NULL; if (sc->sc_rx_mbuf != NULL) { m_freem(sc->sc_rx_mbuf); sc->sc_rx_mbuf = NULL; } return 0; } static int btsco_getdev(void *hdl, struct audio_device *ret) { *ret = btsco_device; return 0; } static int btsco_setfd(void *hdl, int fd) { DPRINTF("set %s duplex\n", fd ? "full" : "half"); return 0; } static int btsco_set_port(void *hdl, mixer_ctrl_t *mc) { struct btsco_softc *sc = hdl; int err = 0; DPRINTF("%s dev %d type %d\n", sc->sc_name, mc->dev, mc->type); switch (mc->dev) { case BTSCO_VGS: if (mc->type != AUDIO_MIXER_VALUE || mc->un.value.num_channels != 1) { err = EINVAL; break; } sc->sc_vgs = mc->un.value.level[AUDIO_MIXER_LEVEL_MONO]; break; case BTSCO_VGM: if (mc->type != AUDIO_MIXER_VALUE || mc->un.value.num_channels != 1) { err = EINVAL; break; } sc->sc_vgm = mc->un.value.level[AUDIO_MIXER_LEVEL_MONO]; break; default: err = EINVAL; break; } return err; } static int btsco_get_port(void *hdl, mixer_ctrl_t *mc) { struct btsco_softc *sc = hdl; int err = 0; DPRINTF("%s dev %d\n", sc->sc_name, mc->dev); switch (mc->dev) { case BTSCO_VGS: mc->type = AUDIO_MIXER_VALUE; mc->un.value.num_channels = 1; mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] = sc->sc_vgs; break; case BTSCO_VGM: mc->type = AUDIO_MIXER_VALUE; mc->un.value.num_channels = 1; mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] = sc->sc_vgm; break; default: err = EINVAL; break; } return err; } static int btsco_query_devinfo(void *hdl, mixer_devinfo_t *di) { /* struct btsco_softc *sc = hdl; */ int err = 0; switch(di->index) { case BTSCO_VGS: di->mixer_class = BTSCO_OUTPUT_CLASS; di->next = di->prev = AUDIO_MIXER_LAST; strlcpy(di->label.name, AudioNspeaker, sizeof(di->label.name)); di->type = AUDIO_MIXER_VALUE; strlcpy(di->un.v.units.name, AudioNvolume, sizeof(di->un.v.units.name)); di->un.v.num_channels = 1; di->un.v.delta = BTSCO_DELTA; break; case BTSCO_VGM: di->mixer_class = BTSCO_INPUT_CLASS; di->next = di->prev = AUDIO_MIXER_LAST; strlcpy(di->label.name, AudioNmicrophone, sizeof(di->label.name)); di->type = AUDIO_MIXER_VALUE; strlcpy(di->un.v.units.name, AudioNvolume, sizeof(di->un.v.units.name)); di->un.v.num_channels = 1; di->un.v.delta = BTSCO_DELTA; break; case BTSCO_INPUT_CLASS: di->mixer_class = BTSCO_INPUT_CLASS; di->next = di->prev = AUDIO_MIXER_LAST; strlcpy(di->label.name, AudioCinputs, sizeof(di->label.name)); di->type = AUDIO_MIXER_CLASS; break; case BTSCO_OUTPUT_CLASS: di->mixer_class = BTSCO_OUTPUT_CLASS; di->next = di->prev = AUDIO_MIXER_LAST; strlcpy(di->label.name, AudioCoutputs, sizeof(di->label.name)); di->type = AUDIO_MIXER_CLASS; break; default: err = ENXIO; break; } return err; } /* * Allocate Ring Buffers. */ static void * btsco_allocm(void *hdl, int direction, size_t size, int pool, int flags) { struct btsco_softc *sc = hdl; void *addr; DPRINTF("%s: size %d direction %d\n", sc->sc_name, size, direction); addr = malloc(size, pool, flags); if (direction == AUMODE_PLAY) { sc->sc_tx_buf = addr; sc->sc_tx_refcnt = 0; } return addr; } /* * Free Ring Buffers. * * Because we used external memory for the tx mbufs, we dont * want to free the memory until all the mbufs are done with * * Just to be sure, dont free if something is still pending. * This would be a memory leak but at least there is a warning.. */ static void btsco_freem(void *hdl, void *addr, int pool) { struct btsco_softc *sc = hdl; int count = hz / 2; if (addr == sc->sc_tx_buf) { DPRINTF("%s: tx_refcnt=%d\n", sc->sc_name, sc->sc_tx_refcnt); sc->sc_tx_buf = NULL; while (sc->sc_tx_refcnt> 0 && count-- > 0) tsleep(sc, PWAIT, "drain", 1); if (sc->sc_tx_refcnt > 0) { printf("%s: ring buffer unreleased!\n", sc->sc_name); return; } } free(addr, pool); } static int btsco_get_props(void *hdl) { return AUDIO_PROP_FULLDUPLEX; } #ifdef notyet /* * Handle private ioctl. We pass information out about how to talk * to the device and mixer. */ static int btsco_dev_ioctl(void *hdl, u_long cmd, void *addr, int flag, struct proc *l) { struct btsco_softc *sc = hdl; struct btsco_info *bi = (struct btsco_info *)addr; int err = 0; DPRINTF("%s cmd 0x%lx flag %d\n", sc->sc_name, cmd, flag); switch (cmd) { case BTSCO_GETINFO: memset(bi, 0, sizeof(*bi)); bdaddr_copy(&bi->laddr, &sc->sc_laddr); bdaddr_copy(&bi->raddr, &sc->sc_raddr); bi->channel = sc->sc_channel; bi->vgs = BTSCO_VGS; bi->vgm = BTSCO_VGM; break; default: err = ENOTTY; break; } return err; } #endif /***************************************************************************** * * misc btsco functions * */ /* * Our transmit interrupt. This is triggered when a new block is to be * sent. We send mtu sized chunks of the block as mbufs with external * storage to sco_send() */ static void btsco_intr(void *arg) { struct btsco_softc *sc = arg; struct mbuf *m; uint8_t *block; int mlen, size; int s; DPRINTFN(10, "%s block %p size %d\n", sc->sc_name, sc->sc_tx_block, sc->sc_tx_size); if (sc->sc_sco == NULL) return; /* connection is lost */ s = splsoftnet(); block = sc->sc_tx_block; size = sc->sc_tx_size; sc->sc_tx_block = NULL; sc->sc_tx_size = 0; mutex_enter(&bt_lock); while (size > 0) { MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == NULL) break; mlen = MIN(sc->sc_mtu, size); /* I think M_DEVBUF is true but not relevant */ MEXTADD(m, block, mlen, M_DEVBUF, btsco_extfree, sc); if ((m->m_flags & M_EXT) == 0) { m_free(m); break; } sc->sc_tx_refcnt++; m->m_pkthdr.len = m->m_len = mlen; sc->sc_tx_pending++; if (sco_send(sc->sc_sco, m) > 0) { sc->sc_tx_pending--; break; } block += mlen; size -= mlen; } mutex_exit(&bt_lock); splx(s); } /* * Release the mbuf, we keep a reference count on the tx buffer so * that we dont release it before its free. */ static void btsco_extfree(caddr_t buf, u_int size, void *arg) { struct btsco_softc *sc = arg; #ifdef notyet if (m != NULL) pool_cache_put(mb_cache, m); #endif sc->sc_tx_refcnt--; }