/* $OpenBSD: vsaudio.c,v 1.4 2013/05/15 21:21:11 ratchov Exp $ */ /* * Copyright (c) 2011 Miodrag Vallat. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* * Copyright (c) 1995 Rolf Grossmann * All rights reserved. * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Rolf Grossmann. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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. */ /* * Audio backend for the VAXstation 4000 AMD79C30 audio chip. * Currently working in pseudo-DMA mode; DMA operation may be possible and * needs to be investigated. */ /* * Although he did not claim copyright for his work, this code owes a lot * to Blaz Antonic who figured out a working * interrupt triggering routine in vsaudio_match(). */ /* * Ported to NetBSD, from OpenBSD, by Björn Johannesson (rherdware@yahoo.com) * in December 2014 */ #include "audio.h" #if NAUDIO > 0 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef AUDIO_DEBUG #define DPRINTF(x) if (am7930debug) printf x #define DPRINTFN(n,x) if (am7930debug>(n)) printf x #else #define DPRINTF(x) #define DPRINTFN(n,x) #endif /* AUDIO_DEBUG */ /* physical addresses of the AM79C30 chip */ #define VSAUDIO_CSR 0x200d0000 #define VSAUDIO_CSR_KA49 0x26800000 /* pdma state */ struct auio { bus_space_tag_t au_bt; /* bus tag */ bus_space_handle_t au_bh; /* handle to chip registers */ uint8_t *au_rdata; /* record data */ uint8_t *au_rend; /* end of record data */ uint8_t *au_pdata; /* play data */ uint8_t *au_pend; /* end of play data */ struct evcnt au_intrcnt; /* statistics */ }; struct am7930_intrhand { int (*ih_fun)(void *); void *ih_arg; }; struct vsaudio_softc { struct am7930_softc sc_am7930; /* glue to MI code */ bus_space_tag_t sc_bt; /* bus cookie */ bus_space_handle_t sc_bh; /* device registers */ struct am7930_intrhand sc_ih; /* interrupt vector (hw or sw) */ void (*sc_rintr)(void*); /* input completion intr handler */ void *sc_rarg; /* arg for sc_rintr() */ void (*sc_pintr)(void*); /* output completion intr handler */ void *sc_parg; /* arg for sc_pintr() */ uint8_t *sc_rdata; /* record data */ uint8_t *sc_rend; /* end of record data */ uint8_t *sc_pdata; /* play data */ uint8_t *sc_pend; /* end of play data */ struct auio sc_au; /* recv and xmit buffers, etc */ #define sc_intrcnt sc_au.au_intrcnt /* statistics */ void *sc_sicookie; /* softintr(9) cookie */ int sc_cvec; kmutex_t sc_lock; }; static int vsaudio_match(struct device *parent, struct cfdata *match, void *); static void vsaudio_attach(device_t parent, device_t self, void *); CFATTACH_DECL_NEW(vsaudio, sizeof(struct vsaudio_softc), vsaudio_match, vsaudio_attach, NULL, NULL); /* * Hardware access routines for the MI code */ uint8_t vsaudio_codec_iread(struct am7930_softc *, int); uint16_t vsaudio_codec_iread16(struct am7930_softc *, int); uint8_t vsaudio_codec_dread(struct vsaudio_softc *, int); void vsaudio_codec_iwrite(struct am7930_softc *, int, uint8_t); void vsaudio_codec_iwrite16(struct am7930_softc *, int, uint16_t); void vsaudio_codec_dwrite(struct vsaudio_softc *, int, uint8_t); void vsaudio_onopen(struct am7930_softc *); void vsaudio_onclose(struct am7930_softc *); /* static stream_filter_factory_t vsaudio_output_conv; static stream_filter_factory_t vsaudio_input_conv; static int vsaudio_output_conv_fetch_to(struct audio_softc *, stream_fetcher_t *, audio_stream_t *, int); static int vsaudio_input_conv_fetch_to(struct audio_softc *, stream_fetcher_t *, audio_stream_t *, int); */ struct am7930_glue vsaudio_glue = { vsaudio_codec_iread, vsaudio_codec_iwrite, vsaudio_codec_iread16, vsaudio_codec_iwrite16, vsaudio_onopen, vsaudio_onclose, 0, /*vsaudio_input_conv*/0, /*vsaudio_output_conv*/0, }; /* * Interface to the MI audio layer. */ int vsaudio_start_output(void *, void *, int, void (*)(void *), void *); int vsaudio_start_input(void *, void *, int, void (*)(void *), void *); int vsaudio_getdev(void *, struct audio_device *); void vsaudio_get_locks(void *opaque, kmutex_t **intr, kmutex_t **thread); struct audio_hw_if vsaudio_hw_if = { am7930_open, am7930_close, NULL, am7930_query_encoding, am7930_set_params, am7930_round_blocksize, am7930_commit_settings, NULL, NULL, vsaudio_start_output, vsaudio_start_input, am7930_halt_output, am7930_halt_input, NULL, vsaudio_getdev, NULL, am7930_set_port, am7930_get_port, am7930_query_devinfo, NULL, NULL, NULL, NULL, am7930_get_props, NULL, NULL, NULL, vsaudio_get_locks, }; struct audio_device vsaudio_device = { "am7930", "x", "vsaudio" }; void vsaudio_hwintr(void *); void vsaudio_swintr(void *); struct auio *auiop; static int vsaudio_match(struct device *parent, struct cfdata *match, void *aux) { struct vsbus_softc *sc __attribute__((__unused__)) = device_private(parent); struct vsbus_attach_args *va = aux; volatile uint32_t *regs; int i; switch (vax_boardtype) { #if defined(VAX_BTYP_46) || defined(VAX_BTYP_48) case VAX_BTYP_46: case VAX_BTYP_48: if (va->va_paddr != VSAUDIO_CSR) return 0; break; #endif #if defined(VAX_BTYP_49) case VAX_BTYP_49: if (va->va_paddr != VSAUDIO_CSR_KA49) return 0; break; #endif default: return 0; } regs = (volatile uint32_t *)va->va_addr; regs[AM7930_DREG_CR] = AM7930_IREG_INIT; regs[AM7930_DREG_DR] = AM7930_INIT_PMS_ACTIVE | AM7930_INIT_INT_ENABLE; regs[AM7930_DREG_CR] = AM7930_IREG_MUX_MCR1; regs[AM7930_DREG_DR] = 0; regs[AM7930_DREG_CR] = AM7930_IREG_MUX_MCR2; regs[AM7930_DREG_DR] = 0; regs[AM7930_DREG_CR] = AM7930_IREG_MUX_MCR3; regs[AM7930_DREG_DR] = (AM7930_MCRCHAN_BB << 4) | AM7930_MCRCHAN_BA; regs[AM7930_DREG_CR] = AM7930_IREG_MUX_MCR4; regs[AM7930_DREG_DR] = AM7930_MCR4_INT_ENABLE; for (i = 10; i < 20; i++) regs[AM7930_DREG_BBTB] = i; delay(1000000); /* XXX too large */ return 1; } static void vsaudio_attach(device_t parent, device_t self, void *aux) { struct vsbus_attach_args *va = aux; struct vsaudio_softc *sc = device_private(self); if (bus_space_map(va->va_memt, va->va_paddr, AM7930_DREG_SIZE << 2, 0, &sc->sc_bh) != 0) { printf(": can't map registers\n"); return; } sc->sc_bt = va->va_memt; sc->sc_am7930.sc_dev = device_private(self); sc->sc_am7930.sc_glue = &vsaudio_glue; mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_HIGH); am7930_init(&sc->sc_am7930, AUDIOAMD_POLL_MODE); auiop = &sc->sc_au; /* Copy bus tag & handle for use by am7930_trap */ sc->sc_au.au_bt = sc->sc_bt; sc->sc_au.au_bh = sc->sc_bh; scb_vecalloc(va->va_cvec, vsaudio_hwintr, sc, SCB_ISTACK, &sc->sc_intrcnt); sc->sc_cvec = va->va_cvec; evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, device_xname(self), "intr"); sc->sc_sicookie = softint_establish(SOFTINT_SERIAL, &vsaudio_swintr, sc); if (sc->sc_sicookie == NULL) { aprint_normal("\n%s: cannot establish software interrupt\n", device_xname(self)); return; } aprint_normal("\n"); audio_attach_mi(&vsaudio_hw_if, sc, self); } void vsaudio_onopen(struct am7930_softc *sc) { struct vsaudio_softc *vssc = (struct vsaudio_softc *)sc; mutex_spin_enter(&vssc->sc_lock); /* reset pdma state */ vssc->sc_rintr = NULL; vssc->sc_rarg = 0; vssc->sc_pintr = NULL; vssc->sc_parg = 0; vssc->sc_rdata = NULL; vssc->sc_pdata = NULL; mutex_spin_exit(&vssc->sc_lock); } void vsaudio_onclose(struct am7930_softc *sc) { am7930_halt_input(sc); am7930_halt_output(sc); } /* * this is called by interrupt code-path, don't lock */ int vsaudio_start_output(void *addr, void *p, int cc, void (*intr)(void *), void *arg) { struct vsaudio_softc *sc = addr; DPRINTFN(1, ("sa_start_output: cc=%d %p (%p)\n", cc, intr, arg)); mutex_spin_enter(&sc->sc_lock); vsaudio_codec_iwrite(&sc->sc_am7930, AM7930_IREG_INIT, AM7930_INIT_PMS_ACTIVE); DPRINTF(("sa_start_output: started intrs.\n")); sc->sc_pintr = intr; sc->sc_parg = arg; sc->sc_au.au_pdata = p; sc->sc_au.au_pend = (char *)p + cc - 1; mutex_spin_exit(&sc->sc_lock); return 0; } /* * this is called by interrupt code-path, don't lock */ int vsaudio_start_input(void *addr, void *p, int cc, void (*intr)(void *), void *arg) { struct vsaudio_softc *sc = addr; DPRINTFN(1, ("sa_start_input: cc=%d %p (%p)\n", cc, intr, arg)); mutex_spin_enter(&sc->sc_lock); vsaudio_codec_iwrite(&sc->sc_am7930, AM7930_IREG_INIT, AM7930_INIT_PMS_ACTIVE); sc->sc_rintr = intr; sc->sc_rarg = arg; sc->sc_au.au_rdata = p; sc->sc_au.au_rend = (char *)p + cc -1; mutex_spin_exit(&sc->sc_lock); DPRINTF(("sa_start_input: started intrs.\n")); return 0; } void vsaudio_hwintr(void *v) { struct vsaudio_softc *sc; struct auio *au; uint8_t *d, *e; int __attribute__((__unused__)) k; sc = v; au = &sc->sc_au; mutex_spin_enter(&sc->sc_lock); /* clear interrupt */ k = vsaudio_codec_dread(sc, AM7930_DREG_IR); #if 0 /* interrupt is not shared, this shouldn't happen */ if ((k & (AM7930_IR_DTTHRSH | AM7930_IR_DRTHRSH | AM7930_IR_DSRI | AM7930_IR_DERI | AM7930_IR_BBUFF)) == 0) { mtx_leave(&audio_lock); return 0; } #endif /* receive incoming data */ d = au->au_rdata; e = au->au_rend; if (d != NULL && d <= e) { *d = vsaudio_codec_dread(sc, AM7930_DREG_BBRB); au->au_rdata++; if (d == e) { DPRINTFN(1, ("vsaudio_hwintr: swintr(r) requested")); softint_schedule(sc->sc_sicookie); } } /* send outgoing data */ d = au->au_pdata; e = au->au_pend; if (d != NULL && d <= e) { vsaudio_codec_dwrite(sc, AM7930_DREG_BBTB, *d); au->au_pdata++; if (d == e) { DPRINTFN(1, ("vsaudio_hwintr: swintr(p) requested")); softint_schedule(sc->sc_sicookie); } } mutex_spin_exit(&sc->sc_lock); } void vsaudio_swintr(void *v) { struct vsaudio_softc *sc; struct auio *au; int dor, dow; sc = v; au = &sc->sc_au; DPRINTFN(1, ("audiointr: sc=%p\n", sc)); dor = dow = 0; mutex_spin_enter(&sc->sc_am7930.sc_intr_lock); if (au->au_rdata > au->au_rend && sc->sc_rintr != NULL) dor = 1; if (au->au_pdata > au->au_pend && sc->sc_pintr != NULL) dow = 1; if (dor != 0) (*sc->sc_rintr)(sc->sc_rarg); if (dow != 0) (*sc->sc_pintr)(sc->sc_parg); mutex_spin_exit(&sc->sc_am7930.sc_intr_lock); } /* indirect write */ void vsaudio_codec_iwrite(struct am7930_softc *sc, int reg, uint8_t val) { struct vsaudio_softc *vssc = (struct vsaudio_softc *)sc; vsaudio_codec_dwrite(vssc, AM7930_DREG_CR, reg); vsaudio_codec_dwrite(vssc, AM7930_DREG_DR, val); } void vsaudio_codec_iwrite16(struct am7930_softc *sc, int reg, uint16_t val) { struct vsaudio_softc *vssc = (struct vsaudio_softc *)sc; vsaudio_codec_dwrite(vssc, AM7930_DREG_CR, reg); vsaudio_codec_dwrite(vssc, AM7930_DREG_DR, val); vsaudio_codec_dwrite(vssc, AM7930_DREG_DR, val >> 8); } /* indirect read */ uint8_t vsaudio_codec_iread(struct am7930_softc *sc, int reg) { struct vsaudio_softc *vssc = (struct vsaudio_softc *)sc; vsaudio_codec_dwrite(vssc, AM7930_DREG_CR, reg); return vsaudio_codec_dread(vssc, AM7930_DREG_DR); } uint16_t vsaudio_codec_iread16(struct am7930_softc *sc, int reg) { struct vsaudio_softc *vssc = (struct vsaudio_softc *)sc; uint lo, hi; vsaudio_codec_dwrite(vssc, AM7930_DREG_CR, reg); lo = vsaudio_codec_dread(vssc, AM7930_DREG_DR); hi = vsaudio_codec_dread(vssc, AM7930_DREG_DR); return (hi << 8) | lo; } /* direct read */ uint8_t vsaudio_codec_dread(struct vsaudio_softc *sc, int reg) { return bus_space_read_1(sc->sc_bt, sc->sc_bh, reg << 2); } /* direct write */ void vsaudio_codec_dwrite(struct vsaudio_softc *sc, int reg, uint8_t val) { bus_space_write_1(sc->sc_bt, sc->sc_bh, reg << 2, val); } int vsaudio_getdev(void *addr, struct audio_device *retp) { *retp = vsaudio_device; return 0; } void vsaudio_get_locks(void *opaque, kmutex_t **intr, kmutex_t **thread) { struct vsaudio_softc *asc = opaque; struct am7930_softc *sc = &asc->sc_am7930; *intr = &sc->sc_intr_lock; *thread = &sc->sc_lock; } /* static stream_filter_t * vsaudio_input_conv(struct audio_softc *sc, const audio_params_t *from, const audio_params_t *to) { return auconv_nocontext_filter_factory(vsaudio_input_conv_fetch_to); } static int vsaudio_input_conv_fetch_to(struct audio_softc *sc, stream_fetcher_t *self, audio_stream_t *dst, int max_used) { stream_filter_t *this; int m, err; this = (stream_filter_t *)self; if ((err = this->prev->fetch_to(sc, this->prev, this->src, max_used * 4))) return err; m = dst->end - dst->start; m = min(m, max_used); FILTER_LOOP_PROLOGUE(this->src, 4, dst, 1, m) { *d = ((*(const uint32_t *)s) >> 16) & 0xff; } FILTER_LOOP_EPILOGUE(this->src, dst); return 0; } static stream_filter_t * vsaudio_output_conv(struct audio_softc *sc, const audio_params_t *from, const audio_params_t *to) { return auconv_nocontext_filter_factory(vsaudio_output_conv_fetch_to); } static int vsaudio_output_conv_fetch_to(struct audio_softc *sc, stream_fetcher_t *self, audio_stream_t *dst, int max_used) { stream_filter_t *this; int m, err; this = (stream_filter_t *)self; max_used = (max_used + 3) & ~3; if ((err = this->prev->fetch_to(sc, this->prev, this->src, max_used / 4))) return err; m = (dst->end - dst->start) & ~3; m = min(m, max_used); FILTER_LOOP_PROLOGUE(this->src, 1, dst, 4, m) { *(uint32_t *)d = (*s << 16); } FILTER_LOOP_EPILOGUE(this->src, dst); return 0; } */ #endif /* NAUDIO > 0 */