/* $NetBSD: pas.c,v 1.20 1996/11/12 07:39:56 mikel Exp $ */ /* * Copyright (c) 1991-1993 Regents of the University of California. * 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 the Computer Systems * Engineering Group at Lawrence Berkeley Laboratory. * 4. Neither the name of the University nor of the Laboratory may be used * to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. * */ /* * Todo: * - look at other PAS drivers (for PAS native suport) * - use common sb.c once emulation is setup */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DEFINE_TRANSLATIONS #include #ifdef AUDIO_DEBUG #define DPRINTF(x) if (pasdebug) printf x int pasdebug = 0; #else #define DPRINTF(x) #endif /* * Software state, per SoundBlaster card. * The soundblaster has multiple functionality, which we must demultiplex. * One approach is to have one major device number for the soundblaster card, * and use different minor numbers to indicate which hardware function * we want. This would make for one large driver. Instead our approach * is to partition the design into a set of drivers that share an underlying * piece of hardware. Most things are hard to share, for example, the audio * and midi ports. For audio, we might want to mix two processes' signals, * and for midi we might want to merge streams (this is hard due to * running status). Moreover, we should be able to re-use the high-level * modules with other kinds of hardware. In this module, we only handle the * most basic communications with the sb card. */ struct pas_softc { struct sbdsp_softc sc_sbdsp; /* base device, &c. */ int model; int rev; }; int pasopen __P((dev_t, int)); int pas_getdev __P((void *, struct audio_device *)); void pasconf __P((int, int, int, int)); /* * Define our interface to the higher level audio driver. */ struct audio_hw_if pas_hw_if = { pasopen, sbdsp_close, NULL, sbdsp_set_in_sr, sbdsp_get_in_sr, sbdsp_set_out_sr, sbdsp_get_out_sr, sbdsp_query_encoding, sbdsp_set_encoding, sbdsp_get_encoding, sbdsp_set_precision, sbdsp_get_precision, sbdsp_set_channels, sbdsp_get_channels, sbdsp_round_blocksize, sbdsp_set_out_port, sbdsp_get_out_port, sbdsp_set_in_port, sbdsp_get_in_port, sbdsp_commit_settings, sbdsp_get_silence, mulaw_expand, mulaw_compress, sbdsp_dma_output, sbdsp_dma_input, sbdsp_haltdma, sbdsp_haltdma, sbdsp_contdma, sbdsp_contdma, sbdsp_speaker_ctl, pas_getdev, sbdsp_setfd, sbdsp_mixer_set_port, sbdsp_mixer_get_port, sbdsp_mixer_query_devinfo, 0, /* not full-duplex */ 0 }; /* The Address Translation code is used to convert I/O register addresses to be relative to the given base -register */ static char *pasnames[] = { "", "Plus", "CDPC", "16", "16Basic" }; static struct audio_device pas_device = { "PAS,??", "", "pas" }; /*XXX assume default I/O base address */ #define pasread(p) inb(p) #define paswrite(d, p) outb(p, d) void pasconf(model, sbbase, sbirq, sbdrq) int model; int sbbase; int sbirq; int sbdrq; { paswrite(0x00, INTERRUPT_MASK); /* Local timer control register */ paswrite(0x36, SAMPLE_COUNTER_CONTROL); /* Sample rate timer (16 bit) */ paswrite(0x36, SAMPLE_RATE_TIMER); paswrite(0, SAMPLE_RATE_TIMER); /* Local timer control register */ paswrite(0x74, SAMPLE_COUNTER_CONTROL); /* Sample count register (16 bit) */ paswrite(0x74, SAMPLE_BUFFER_COUNTER); paswrite(0, SAMPLE_BUFFER_COUNTER); paswrite(P_C_PCM_MONO | P_C_PCM_DAC_MODE | P_C_MIXER_CROSS_L_TO_L | P_C_MIXER_CROSS_R_TO_R, PCM_CONTROL); paswrite(S_M_PCM_RESET | S_M_FM_RESET | S_M_SB_RESET | S_M_MIXER_RESET, SERIAL_MIXER); /*XXX*/ paswrite(I_C_1_BOOT_RESET_ENABLE|1, IO_CONFIGURATION_1); paswrite(I_C_2_PCM_DMA_DISABLED, IO_CONFIGURATION_2); paswrite(I_C_3_PCM_IRQ_DISABLED, IO_CONFIGURATION_3); #ifdef BROKEN_BUS_CLOCK paswrite(S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND | S_C_1_FM_EMULATE_CLOCK, SYSTEM_CONFIGURATION_1); #else paswrite(S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND, SYSTEM_CONFIGURATION_1); #endif /*XXX*/ paswrite(0, SYSTEM_CONFIGURATION_2); paswrite(0, SYSTEM_CONFIGURATION_3); /* Sets mute off and selects filter rate of 17.897 kHz */ paswrite(F_F_MIXER_UNMUTE | 0x01, FILTER_FREQUENCY); if (model == PAS_16 || model == PAS_16BASIC) paswrite(8, PRESCALE_DIVIDER); else paswrite(0, PRESCALE_DIVIDER); paswrite(P_M_MV508_ADDRESS | P_M_MV508_PCM, PARALLEL_MIXER); paswrite(5, PARALLEL_MIXER); /* * Setup SoundBlaster emulation. */ paswrite((sbbase >> 4) & 0xf, EMULATION_ADDRESS); paswrite(E_C_SB_IRQ_translate[sbirq] | E_C_SB_DMA_translate[sbdrq], EMULATION_CONFIGURATION); paswrite(C_E_SB_ENABLE, COMPATIBILITY_ENABLE); /* * Set mid-range levels. */ paswrite(P_M_MV508_ADDRESS | P_M_MV508_MODE, PARALLEL_MIXER); paswrite(P_M_MV508_LOUDNESS | P_M_MV508_ENHANCE_NONE, PARALLEL_MIXER); paswrite(P_M_MV508_ADDRESS | P_M_MV508_MASTER_A, PARALLEL_MIXER); paswrite(50, PARALLEL_MIXER); paswrite(P_M_MV508_ADDRESS | P_M_MV508_MASTER_B, PARALLEL_MIXER); paswrite(50, PARALLEL_MIXER); paswrite(P_M_MV508_ADDRESS | P_M_MV508_MIXER | P_M_MV508_SB, PARALLEL_MIXER); paswrite(P_M_MV508_OUTPUTMIX | 30, PARALLEL_MIXER); paswrite(P_M_MV508_ADDRESS | P_M_MV508_MIXER | P_M_MV508_MIC, PARALLEL_MIXER); paswrite(P_M_MV508_INPUTMIX | 30, PARALLEL_MIXER); } int pasprobe __P((struct device *, void *, void *)); void pasattach __P((struct device *, struct device *, void *)); struct cfattach pas_ca = { sizeof(struct pas_softc), pasprobe, pasattach }; struct cfdriver pas_cd = { NULL, "pas", DV_DULL }; /* * Probe / attach routines. */ /* * Probe for the soundblaster hardware. */ int pasprobe(parent, match, aux) struct device *parent; void *match, *aux; { register struct pas_softc *sc = match; register struct isa_attach_args *ia = aux; register int iobase; u_char id, t; /* * WARNING: Setting an option like W:1 or so that disables * warm boot reset of the card will screw up this detect code * something fierce. Adding code to handle this means possibly * interfering with other cards on the bus if you have something * on base port 0x388. SO be forewarned. */ /* Talk to first board */ outb(MASTER_DECODE, 0xbc); /* Set base address */ #if 0 /* XXX Need to setup pseudo device */ /* XXX What are good io addrs ? */ if (iobase != PAS_DEFAULT_BASE) { printf("pas: configured iobase %d invalid\n", iobase); return 0; } #else /* Start out talking to native PAS */ iobase = PAS_DEFAULT_BASE; #endif outb(MASTER_DECODE, iobase >> 2); /* One wait-state */ paswrite(1, WAIT_STATE); id = pasread(INTERRUPT_MASK); if (id == 0xff || id == 0xfe) { /* sanity */ DPRINTF(("pas: bogus card id\n")); return 0; } /* * We probably have a PAS-series board, now check for a * PAS2-series board by trying to change the board revision * bits. PAS2-series hardware won't let you do this because * the bits are read-only. */ t = id ^ 0xe0; paswrite(t, INTERRUPT_MASK); t = inb(INTERRUPT_MASK); paswrite(id, INTERRUPT_MASK); if (t != id) { /* Not a PAS2 */ printf("pas: detected card but PAS2 test failed\n"); return 0; } /*XXX*/ t = pasread(OPERATION_MODE_1) & 0xf; sc->model = O_M_1_to_card[t]; if (sc->model != 0) { sc->rev = pasread(BOARD_REV_ID); } else { DPRINTF(("pas: bogus model id\n")); return 0; } if (sc->model >= 0) { if (ia->ia_irq == IRQUNK) { printf("pas: sb emulation requires known irq\n"); return (0); } pasconf(sc->model, ia->ia_iobase, ia->ia_irq, 1); } else { DPRINTF(("pas: could not probe pas\n")); return (0); } /* Now a SoundBlaster */ sc->sc_sbdsp.sc_iobase = ia->ia_iobase; if (sbdsp_reset(&sc->sc_sbdsp) < 0) { DPRINTF(("pas: couldn't reset card\n")); return 0; } /* * Cannot auto-discover DMA channel. */ if (!SB_DRQ_VALID(ia->ia_drq)) { printf("pas: configured dma chan %d invalid\n", ia->ia_drq); return 0; } #ifdef NEWCONFIG /* * If the IRQ wasn't compiled in, auto-detect it. */ if (ia->ia_irq == IRQUNK) { ia->ia_irq = isa_discoverintr(pasforceintr, aux); sbdsp_reset(&sc->sc_sbdsp); if (!SB_IRQ_VALID(ia->ia_irq)) { printf("pas: couldn't auto-detect interrupt"); return 0; } } else #endif if (!SB_IRQ_VALID(ia->ia_irq)) { printf("pas: configured irq chan %d invalid\n", ia->ia_irq); return 0; } sc->sc_sbdsp.sc_irq = ia->ia_irq; sc->sc_sbdsp.sc_drq = ia->ia_drq; if (sbdsp_probe(&sc->sc_sbdsp) == 0) { DPRINTF(("pas: sbdsp probe failed\n")); return 0; } ia->ia_iosize = SB_NPORT; return 1; } #ifdef NEWCONFIG void pasforceintr(aux) void *aux; { static char dmabuf; struct isa_attach_args *ia = aux; int iobase = ia->ia_iobase; /* * Set up a DMA read of one byte. * XXX Note that at this point we haven't called * at_setup_dmachan(). This is okay because it just * allocates a buffer in case it needs to make a copy, * and it won't need to make a copy for a 1 byte buffer. * (I think that calling at_setup_dmachan() should be optional; * if you don't call it, it will be called the first time * it is needed (and you pay the latency). Also, you might * never need the buffer anyway.) */ at_dma(DMAMODE_READ, &dmabuf, 1, ia->ia_drq); if (pas_wdsp(iobase, SB_DSP_RDMA) == 0) { (void)pas_wdsp(iobase, 0); (void)pas_wdsp(iobase, 0); } } #endif /* * Attach hardware to driver, attach hardware driver to audio * pseudo-device driver . */ void pasattach(parent, self, aux) struct device *parent, *self; void *aux; { register struct pas_softc *sc = (struct pas_softc *)self; struct isa_attach_args *ia = (struct isa_attach_args *)aux; register int iobase = ia->ia_iobase; int err; sc->sc_sbdsp.sc_iobase = iobase; sc->sc_sbdsp.sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, IPL_AUDIO, sbdsp_intr, &sc->sc_sbdsp); printf(" ProAudio Spectrum %s [rev %d] ", pasnames[sc->model], sc->rev); sbdsp_attach(&sc->sc_sbdsp); sprintf(pas_device.name, "pas,%s", pasnames[sc->model]); sprintf(pas_device.version, "%d", sc->rev); if ((err = audio_hardware_attach(&pas_hw_if, &sc->sc_sbdsp)) != 0) printf("pas: could not attach to audio pseudo-device driver (%d)\n", err); } int pasopen(dev, flags) dev_t dev; int flags; { struct pas_softc *sc; int unit = AUDIOUNIT(dev); if (unit >= pas_cd.cd_ndevs) return ENODEV; sc = pas_cd.cd_devs[unit]; if (!sc) return ENXIO; return sbdsp_open(&sc->sc_sbdsp, dev, flags); } int pas_getdev(addr, retp) void *addr; struct audio_device *retp; { *retp = pas_device; return 0; }