/* $NetBSD: cs4231_sbus.c,v 1.50 2017/05/02 08:11:16 martin Exp $ */ /*- * Copyright (c) 1998, 1999, 2002, 2007 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Paul Kranenburg. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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 __KERNEL_RCSID(0, "$NetBSD: cs4231_sbus.c,v 1.50 2017/05/02 08:11:16 martin Exp $"); #include "audio.h" #if NAUDIO > 0 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef AUDIO_DEBUG int cs4231_sbus_debug = 0; #define DPRINTF(x) if (cs4231_sbus_debug) printf x #else #define DPRINTF(x) #endif /* where APC DMA registers are located */ #define CS4231_APCDMA_OFFSET 16 /* interrupt enable bits except those specific for playback/capture */ #define APC_ENABLE (APC_EI | APC_IE | APC_EIE) struct cs4231_sbus_softc { struct cs4231_softc sc_cs4231; void *sc_pint; void *sc_rint; bus_space_tag_t sc_bt; /* DMA controller tag */ bus_space_handle_t sc_bh; /* DMA controller registers */ }; static int cs4231_sbus_match(device_t, cfdata_t, void *); static void cs4231_sbus_attach(device_t, device_t, void *); static int cs4231_sbus_pint(void *); static int cs4231_sbus_rint(void *); CFATTACH_DECL_NEW(audiocs_sbus, sizeof(struct cs4231_sbus_softc), cs4231_sbus_match, cs4231_sbus_attach, NULL, NULL); /* audio_hw_if methods specific to apc DMA */ static int cs4231_sbus_trigger_output(void *, void *, void *, int, void (*)(void *), void *, const audio_params_t *); static int cs4231_sbus_trigger_input(void *, void *, void *, int, void (*)(void *), void *, const audio_params_t *); static int cs4231_sbus_halt_output(void *); static int cs4231_sbus_halt_input(void *); const struct audio_hw_if audiocs_sbus_hw_if = { cs4231_open, cs4231_close, NULL, /* drain */ ad1848_query_encoding, ad1848_set_params, NULL, /* round_blocksize */ ad1848_commit_settings, NULL, /* init_output */ NULL, /* init_input */ NULL, /* start_output */ NULL, /* start_input */ cs4231_sbus_halt_output, cs4231_sbus_halt_input, NULL, /* speaker_ctl */ cs4231_getdev, NULL, /* setfd */ cs4231_set_port, cs4231_get_port, cs4231_query_devinfo, cs4231_malloc, cs4231_free, NULL, /* round_buffersize */ NULL, /* mappage */ cs4231_get_props, cs4231_sbus_trigger_output, cs4231_sbus_trigger_input, NULL, /* dev_ioctl */ ad1848_get_locks, }; #ifdef AUDIO_DEBUG static void cs4231_sbus_regdump(const char *, struct cs4231_sbus_softc *); #endif static int cs4231_sbus_intr(void *); static int cs4231_sbus_match(device_t parent, cfdata_t cf, void *aux) { struct sbus_attach_args *sa; sa = aux; return strcmp(sa->sa_name, AUDIOCS_PROM_NAME) == 0; } static void cs4231_sbus_attach(device_t parent, device_t self, void *aux) { struct cs4231_sbus_softc *sbsc; struct cs4231_softc *sc; struct sbus_attach_args *sa; bus_space_handle_t bh; sbsc = device_private(self); sc = &sbsc->sc_cs4231; sa = aux; sbsc->sc_bt = sc->sc_bustag = sa->sa_bustag; sc->sc_dmatag = sa->sa_dmatag; sbsc->sc_pint = sparc_softintr_establish(IPL_SCHED, (void *)cs4231_sbus_pint, sc); sbsc->sc_rint = sparc_softintr_establish(IPL_SCHED, (void *)cs4231_sbus_rint, sc); /* * Map my registers in, if they aren't already in virtual * address space. */ if (sa->sa_npromvaddrs) { sbus_promaddr_to_handle(sa->sa_bustag, sa->sa_promvaddrs[0], &bh); } else { if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, sa->sa_size, 0, &bh) != 0) { aprint_error("%s @ sbus: cannot map registers\n", device_xname(self)); return; } } bus_space_subregion(sa->sa_bustag, bh, CS4231_APCDMA_OFFSET, APC_DMA_SIZE, &sbsc->sc_bh); cs4231_common_attach(sc, self, bh); printf("\n"); ad1848_init_locks(&sc->sc_ad1848, IPL_SCHED); /* Establish interrupt channel */ if (sa->sa_nintr) bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_SCHED, cs4231_sbus_intr, sbsc); audio_attach_mi(&audiocs_sbus_hw_if, sbsc, self); } #ifdef AUDIO_DEBUG static void cs4231_sbus_regdump(const char *label, struct cs4231_sbus_softc *sc) { char bits[128]; printf("cs4231regdump(%s): regs:", label); printf("dmapva: 0x%x; ", bus_space_read_4(sc->sc_bt, sc->sc_bh, APC_DMA_PVA)); printf("dmapc: 0x%x; ", bus_space_read_4(sc->sc_bt, sc->sc_bh, APC_DMA_PC)); printf("dmapnva: 0x%x; ", bus_space_read_4(sc->sc_bt, sc->sc_bh, APC_DMA_PNVA)); printf("dmapnc: 0x%x\n", bus_space_read_4(sc->sc_bt, sc->sc_bh, APC_DMA_PNC)); printf("dmacva: 0x%x; ", bus_space_read_4(sc->sc_bt, sc->sc_bh, APC_DMA_CVA)); printf("dmacc: 0x%x; ", bus_space_read_4(sc->sc_bt, sc->sc_bh, APC_DMA_CC)); printf("dmacnva: 0x%x; ", bus_space_read_4(sc->sc_bt, sc->sc_bh, APC_DMA_CNVA)); printf("dmacnc: 0x%x\n", bus_space_read_4(sc->sc_bt, sc->sc_bh, APC_DMA_CNC)); snprintb(bits, sizeof(bits), APC_BITS, bus_space_read_4(sc->sc_bt, sc->sc_bh, APC_DMA_CSR)); printf("apc_dmacsr=%s\n", bits); ad1848_dump_regs(&sc->sc_cs4231.sc_ad1848); } #endif /* AUDIO_DEBUG */ static int cs4231_sbus_trigger_output(void *addr, void *start, void *end, int blksize, void (*intr)(void *), void *arg, const audio_params_t *param) { struct cs4231_sbus_softc *sbsc; struct cs4231_softc *sc; struct cs_transfer *t; uint32_t csr; bus_addr_t dmaaddr; bus_size_t dmasize; int ret; #ifdef AUDIO_DEBUG char bits[128]; #endif sbsc = addr; sc = &sbsc->sc_cs4231; t = &sc->sc_playback; ret = cs4231_transfer_init(sc, t, &dmaaddr, &dmasize, start, end, blksize, intr, arg); if (ret != 0) return ret; DPRINTF(("trigger_output: was: %x %d, %x %d\n", bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PVA), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PC), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PNVA), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PNC))); /* load first block */ bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PNVA, dmaaddr); bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PNC, dmasize); DPRINTF(("trigger_output: 1st: %x %d, %x %d\n", bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PVA), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PC), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PNVA), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PNC))); csr = bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR); #ifdef AUDIO_DEBUG snprintb(bits, sizeof(bits), APC_BITS, csr); #endif DPRINTF(("trigger_output: csr=%s\n", bits)); if ((csr & PDMA_GO) == 0 || (csr & APC_PPAUSE) != 0) { int cfg; csr &= ~(APC_PPAUSE | APC_PMIE | APC_INTR_MASK); bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR, csr); csr = bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR); csr &= ~APC_INTR_MASK; csr |= APC_ENABLE | APC_PIE | APC_PMIE | PDMA_GO; bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR, csr); ad_write(&sc->sc_ad1848, SP_LOWER_BASE_COUNT, 0xff); ad_write(&sc->sc_ad1848, SP_UPPER_BASE_COUNT, 0xff); cfg = ad_read(&sc->sc_ad1848, SP_INTERFACE_CONFIG); ad_write(&sc->sc_ad1848, SP_INTERFACE_CONFIG, (cfg | PLAYBACK_ENABLE)); } else { #ifdef AUDIO_DEBUG snprintb(bits, sizeof(bits), APC_BITS, csr); #endif DPRINTF(("trigger_output: already: csr=%s\n", bits)); } /* load next block if we can */ csr = bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR); if (csr & APC_PD) { cs4231_transfer_advance(t, &dmaaddr, &dmasize); bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PNVA, dmaaddr); bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PNC, dmasize); DPRINTF(("trigger_output: 2nd: %x %d, %x %d\n", bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PVA), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PC), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PNVA), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PNC))); } return 0; } static int cs4231_sbus_halt_output(void *addr) { struct cs4231_sbus_softc *sbsc; struct cs4231_softc *sc; uint32_t csr; int cfg; #ifdef AUDIO_DEBUG char bits[128]; #endif sbsc = addr; sc = &sbsc->sc_cs4231; sc->sc_playback.t_active = 0; csr = bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR); #ifdef AUDIO_DEBUG snprintb(bits, sizeof(bits), APC_BITS, csr); #endif DPRINTF(("halt_output: csr=%s\n", bits)); csr &= ~APC_INTR_MASK; /* do not clear interrupts accidentally */ csr |= APC_PPAUSE; /* pause playback (let current complete) */ bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR, csr); /* let the curernt transfer complete */ if (csr & PDMA_GO) do { csr = bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR); #ifdef AUDIO_DEBUG snprintb(bits, sizeof(bits), APC_BITS, csr); #endif DPRINTF(("halt_output: csr=%s\n", bits)); } while ((csr & APC_PM) == 0); cfg = ad_read(&sc->sc_ad1848, SP_INTERFACE_CONFIG); ad_write(&sc->sc_ad1848, SP_INTERFACE_CONFIG,(cfg & ~PLAYBACK_ENABLE)); return 0; } /* NB: we don't enable APC_CMIE and won't use APC_CM */ static int cs4231_sbus_trigger_input(void *addr, void *start, void *end, int blksize, void (*intr)(void *), void *arg, const audio_params_t *param) { struct cs4231_sbus_softc *sbsc; struct cs4231_softc *sc; struct cs_transfer *t; uint32_t csr; bus_addr_t dmaaddr; bus_size_t dmasize; int ret; #ifdef AUDIO_DEBUG char bits[128]; #endif sbsc = addr; sc = &sbsc->sc_cs4231; t = &sc->sc_capture; ret = cs4231_transfer_init(sc, t, &dmaaddr, &dmasize, start, end, blksize, intr, arg); if (ret != 0) return ret; csr = bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR); #ifdef AUDIO_DEBUG snprintb(bits, sizeof(bits), APC_BITS, csr); #endif DPRINTF(("trigger_input: csr=%s\n", bits)); DPRINTF(("trigger_input: was: %x %d, %x %d\n", bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CVA), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CC), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CNVA), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CNC))); /* supply first block */ bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CNVA, dmaaddr); bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CNC, dmasize); DPRINTF(("trigger_input: 1st: %x %d, %x %d\n", bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CVA), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CC), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CNVA), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CNC))); csr = bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR); if ((csr & CDMA_GO) == 0 || (csr & APC_CPAUSE) != 0) { int cfg; csr &= ~(APC_CPAUSE | APC_CMIE | APC_INTR_MASK); bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR, csr); csr = bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR); csr &= ~APC_INTR_MASK; csr |= APC_ENABLE | APC_CIE | CDMA_GO; bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR, csr); ad_write(&sc->sc_ad1848, CS_LOWER_REC_CNT, 0xff); ad_write(&sc->sc_ad1848, CS_UPPER_REC_CNT, 0xff); cfg = ad_read(&sc->sc_ad1848, SP_INTERFACE_CONFIG); ad_write(&sc->sc_ad1848, SP_INTERFACE_CONFIG, (cfg | CAPTURE_ENABLE)); } else { #ifdef AUDIO_DEBUG snprintb(bits, sizeof(bits), APC_BITS, csr); #endif DPRINTF(("trigger_input: already: csr=%s\n", bits)); } /* supply next block if we can */ csr = bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR); if (csr & APC_CD) { cs4231_transfer_advance(t, &dmaaddr, &dmasize); bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CNVA, dmaaddr); bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CNC, dmasize); DPRINTF(("trigger_input: 2nd: %x %d, %x %d\n", bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CVA), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CC), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CNVA), bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CNC))); } return 0; } static int cs4231_sbus_halt_input(void *addr) { struct cs4231_sbus_softc *sbsc; struct cs4231_softc *sc; uint32_t csr; int cfg; #ifdef AUDIO_DEBUG char bits[128]; #endif sbsc = addr; sc = &sbsc->sc_cs4231; sc->sc_capture.t_active = 0; csr = bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR); #ifdef AUDIO_DEBUG snprintb(bits, sizeof(bits), APC_BITS, csr); #endif DPRINTF(("halt_input: csr=%s\n", bits)); csr &= ~APC_INTR_MASK; /* do not clear interrupts accidentally */ csr |= APC_CPAUSE; bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR, csr); /* let the curernt transfer complete */ if (csr & CDMA_GO) do { csr = bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR); #ifdef AUDIO_DEBUG snprintb(bits, sizeof(bits), APC_BITS, csr); #endif DPRINTF(("halt_input: csr=%s\n", bits)); } while ((csr & APC_CM) == 0); cfg = ad_read(&sc->sc_ad1848, SP_INTERFACE_CONFIG); ad_write(&sc->sc_ad1848, SP_INTERFACE_CONFIG, (cfg & ~CAPTURE_ENABLE)); return 0; } static int cs4231_sbus_intr(void *arg) { struct cs4231_sbus_softc *sbsc; struct cs4231_softc *sc; uint32_t csr; int status; bus_addr_t dmaaddr; bus_size_t dmasize; int served; #if defined(AUDIO_DEBUG) || defined(DIAGNOSTIC) char bits[128]; #endif sbsc = arg; sc = &sbsc->sc_cs4231; csr = bus_space_read_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR); if ((csr & APC_INTR_MASK) == 0) /* any interrupt pedning? */ return 0; mutex_spin_enter(&sc->sc_ad1848.sc_intr_lock); /* write back DMA status to clear interrupt */ bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CSR, csr); ++sc->sc_intrcnt.ev_count; served = 0; #ifdef AUDIO_DEBUG if (cs4231_sbus_debug > 1) cs4231_sbus_regdump("audiointr", sbsc); #endif status = ADREAD(&sc->sc_ad1848, AD1848_STATUS); #ifdef AUDIO_DEBUG snprintb(bits, sizeof(bits), AD_R2_BITS, status); #endif DPRINTF(("%s: status: %s\n", device_xname(sc->sc_ad1848.sc_dev), bits)); if (status & INTERRUPT_STATUS) { #ifdef AUDIO_DEBUG int reason; reason = ad_read(&sc->sc_ad1848, CS_IRQ_STATUS); snprintb(bits, sizeof(bits), CS_I24_BITS, reason); DPRINTF(("%s: i24: %s\n", device_xname(sc->sc_ad1848.sc_dev), bits)); #endif /* clear ad1848 interrupt */ ADWRITE(&sc->sc_ad1848, AD1848_STATUS, 0); } if (csr & APC_CI) { if (csr & APC_CD) { /* can supply new block */ struct cs_transfer *t = &sc->sc_capture; cs4231_transfer_advance(t, &dmaaddr, &dmasize); bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CNVA, dmaaddr); bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_CNC, dmasize); if (t->t_intr != NULL) sparc_softintr_schedule(sbsc->sc_rint); ++t->t_intrcnt.ev_count; served = 1; } } if (csr & APC_PMI) { if (!sc->sc_playback.t_active) served = 1; /* draining in halt_output() */ } if (csr & APC_PI) { if (csr & APC_PD) { /* can load new block */ struct cs_transfer *t = &sc->sc_playback; if (t->t_active) { cs4231_transfer_advance(t, &dmaaddr, &dmasize); bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PNVA, dmaaddr); bus_space_write_4(sbsc->sc_bt, sbsc->sc_bh, APC_DMA_PNC, dmasize); } if (t->t_intr != NULL) sparc_softintr_schedule(sbsc->sc_pint); ++t->t_intrcnt.ev_count; served = 1; } } /* got an interrupt we don't know how to handle */ if (!served) { #ifdef DIAGNOSTIC snprintb(bits, sizeof(bits), APC_BITS, csr); printf("%s: unhandled csr=%s\n", device_xname(sc->sc_ad1848.sc_dev), bits); #endif /* evcnt? */ } mutex_spin_exit(&sc->sc_ad1848.sc_intr_lock); return 1; } static int cs4231_sbus_pint(void *cookie) { struct cs4231_softc *sc = cookie; struct cs_transfer *t; mutex_spin_enter(&sc->sc_ad1848.sc_intr_lock); t = &sc->sc_playback; if (t->t_intr != NULL) (*t->t_intr)(t->t_arg); mutex_spin_exit(&sc->sc_ad1848.sc_intr_lock); return 0; } static int cs4231_sbus_rint(void *cookie) { struct cs4231_softc *sc = cookie; struct cs_transfer *t; mutex_spin_enter(&sc->sc_ad1848.sc_intr_lock); t = &sc->sc_capture; if (t->t_intr != NULL) (*t->t_intr)(t->t_arg); mutex_spin_exit(&sc->sc_ad1848.sc_intr_lock); return 0; } #endif /* NAUDIO > 0 */