/* $NetBSD: beep.c,v 1.4 1996/03/27 22:08:36 mark Exp $ */ /* * Copyright (c) 1995 Mark Brinicombe * * 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 RiscBSD team. * 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. */ /* * Simple beep sounds using VIDC */ /* * To use the driver, open /dev/beep and write lines. * Each write will generate a beep * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "beep.h" struct beep_softc { struct device sc_device; irqhandler_t sc_ih; int sc_iobase; int sc_open; int sc_count; u_int sc_sound_cur0; u_int sc_sound_end0; u_int sc_sound_cur1; u_int sc_sound_end1; vm_offset_t sc_buffer0; vm_offset_t sc_buffer1; }; int beepprobe __P((struct device *parent, void *match, void *aux)); void beepattach __P((struct device *parent, struct device *self, void *aux)); int beepopen __P((dev_t, int, int, struct proc *)); int beepclose __P((dev_t, int, int, struct proc *)); int beepintr __P((struct beep_softc *sc)); void beepdma __P((struct beep_softc *sc, int buf)); struct cfattach beep_ca = { sizeof(struct beep_softc), beepprobe, beepattach }; struct cfdriver beep_cd = { NULL, "beep", DV_TTY }; int beepprobe(parent, match, aux) struct device *parent; void *match; void *aux; { /* struct mainbus_attach_args *mb = aux;*/ int id; /* Make sure we have an IOMD we understand */ id = ReadByte(IOMD_ID0) | (ReadByte(IOMD_ID1) << 8); /* So far I only know about this IOMD */ switch (id) { case RPC600_IOMD_ID: return(1); break; default: printf("beep: Unknown IOMD id=%04x", id); break; } return(0); } void beepattach(parent, self, aux) struct device *parent; struct device *self; void *aux; { struct beep_softc *sc = (void *)self; struct mainbus_attach_args *mb = aux; sc->sc_iobase = mb->mb_iobase; sc->sc_open = 0; sc->sc_count = 0; sc->sc_buffer0 = kmem_alloc(kernel_map, NBPG); if (sc->sc_buffer0 == 0) panic("beep: Cannot allocate buffer memory"); if ((sc->sc_buffer0 & (NBPG -1)) != 0) panic("beep: Cannot allocate page aligned buffer"); sc->sc_buffer1 = sc->sc_buffer0; sc->sc_sound_cur0 = pmap_extract(kernel_pmap, (vm_offset_t)sc->sc_buffer0 & PG_FRAME); sc->sc_sound_end0 = (sc->sc_sound_cur0 + NBPG - 16) | 0x00000000; sc->sc_sound_cur1 = pmap_extract(kernel_pmap, (vm_offset_t)sc->sc_buffer1 & PG_FRAME); sc->sc_sound_end1 = (sc->sc_sound_cur1 + NBPG - 16) | 0x00000000; bcopy(beep_waveform, (void *)sc->sc_buffer0, sizeof(beep_waveform)); /* Reset the sound DMA channel */ WriteWord(IOMD_SD0CURA, sc->sc_sound_cur0); WriteWord(IOMD_SD0ENDA, sc->sc_sound_end0 | 0xc0000000); WriteWord(IOMD_SD0CURB, sc->sc_sound_cur1); WriteWord(IOMD_SD0ENDB, sc->sc_sound_end1 | 0xc0000000); WriteByte(IOMD_SD0CR, 0x90); /* Install an IRQ handler */ sc->sc_ih.ih_func = beepintr; sc->sc_ih.ih_arg = sc; sc->sc_ih.ih_level = IPL_NONE; sc->sc_ih.ih_name = "dma snd ch 0"; if (irq_claim(IRQ_DMASCH0, &sc->sc_ih)) panic("Cannot claim DMASCH0 IRQ for beep%d", parent->dv_unit); disable_irq(IRQ_DMASCH0); /* printf(" [ buf0=%08x:%08x->%08x buf1=%08x:%08x->%08x ]", (u_int)sc->sc_buffer0, sc->sc_sound_cur0, sc->sc_sound_end0, (u_int)sc->sc_buffer1, sc->sc_sound_cur1, sc->sc_sound_end1); */ printf("\n"); /* Set sample rate to 32us */ WriteWord(VIDC_BASE, VIDC_SFR | 32); /* Set the stereo postions to centred for all channels */ WriteWord(VIDC_BASE, VIDC_SIR0 | SIR_CENTRE); WriteWord(VIDC_BASE, VIDC_SIR1 | SIR_CENTRE); WriteWord(VIDC_BASE, VIDC_SIR2 | SIR_CENTRE); WriteWord(VIDC_BASE, VIDC_SIR3 | SIR_CENTRE); WriteWord(VIDC_BASE, VIDC_SIR4 | SIR_CENTRE); WriteWord(VIDC_BASE, VIDC_SIR5 | SIR_CENTRE); WriteWord(VIDC_BASE, VIDC_SIR6 | SIR_CENTRE); WriteWord(VIDC_BASE, VIDC_SIR7 | SIR_CENTRE); } int beepopen(dev, flag, mode, p) dev_t dev; int flag; int mode; struct proc *p; { struct beep_softc *sc; int unit = minor(dev); int s; if (unit >= beep_cd.cd_ndevs) return(ENXIO); sc = beep_cd.cd_devs[unit]; if (!sc) return(ENXIO); /* HACK hack hack */ s = splhigh(); if (sc->sc_open) { (void)splx(s); return(EBUSY); } ++sc->sc_open; (void)splx(s); return(0); } int beepclose(dev, flag, mode, p) dev_t dev; int flag; int mode; struct proc *p; { int unit = minor(dev); struct beep_softc *sc = beep_cd.cd_devs[unit]; int s; if (sc->sc_open == 0) return(ENXIO); /* HACK hack hack */ s = splhigh(); --sc->sc_open; (void)splx(s); return(0); } void beep_generate(void) { struct beep_softc *sc = beep_cd.cd_devs[0]; /* int status;*/ if (sc->sc_count > 0) { /* printf("beep: active\n");*/ return; } /* printf("beep: generate ");*/ ++sc->sc_count; /* status = ReadByte(IOMD_SD0ST); printf("st=%02x\n", status);*/ WriteByte(IOMD_SD0CR, 0x90); WriteByte(IOMD_SD0CR, 0x30); beepdma(sc, 0); } int beepioctl(dev, cmd, data, flag, p) dev_t dev; int cmd; caddr_t data; int flag; struct proc *p; { struct beep_softc *sc = beep_cd.cd_devs[minor(dev)]; int rate; struct wavebuffer *wave = (struct wavebuffer *)data; switch (cmd) { case BEEP_GENERATE: beep_generate(); break; case BEEP_SETRATE: rate = *(int *)data; if (rate < 3 || rate > 255) return(EINVAL); WriteWord(VIDC_BASE, VIDC_SFR | rate); break; case BEEP_SET: printf("set %08x\n", (u_int)data); printf("set %08x %08x\n", (u_int)wave->addr, wave->size); if (wave->size < 16 || wave->size > NBPG) return(ENXIO); copyin(wave->addr, (char *)sc->sc_buffer0, wave->size); sc->sc_sound_end0 = (sc->sc_sound_cur0 + wave->size - 16); sc->sc_sound_end1 = (sc->sc_sound_cur1 + wave->size - 16); break; default: return(ENXIO); break; } return(0); } int beepintr(sc) struct beep_softc *sc; { /* printf("beepintr: %02x,%02x,%02x,%d\n", ReadByte(IOMD_DMARQ), ReadByte(IOMD_SD0CR), ReadByte(IOMD_SD0ST), sc->sc_count);*/ WriteByte(IOMD_DMARQ, 0x10); --sc->sc_count; if (sc->sc_count <= 0) { WriteWord(IOMD_SD0CURB, sc->sc_sound_cur1); WriteWord(IOMD_SD0ENDB, sc->sc_sound_end1 | (1 << 30)); disable_irq(IRQ_DMASCH0); /* printf("stop:st=%02x\n", ReadByte(IOMD_SD0ST));*/ return(1); } beepdma(sc, sc->sc_count & 1); return(1); } void beepdma(sc, buf) struct beep_softc *sc; int buf; { int status; /* printf("beep:dma %d", buf); */ status = ReadByte(IOMD_SD0ST); /* printf("st=%02x\n", status);*/ if (buf == 0) { WriteWord(IOMD_SD0CURA, sc->sc_sound_cur0); WriteWord(IOMD_SD0ENDA, sc->sc_sound_end0); WriteWord(IOMD_SD0CURB, sc->sc_sound_cur1); WriteWord(IOMD_SD0ENDB, sc->sc_sound_end1 | (1 << 30)); } if (buf == 1) { WriteWord(IOMD_SD0CURB, sc->sc_sound_cur1); WriteWord(IOMD_SD0ENDB, sc->sc_sound_end1 | (1 << 30)); } /* status = ReadByte(IOMD_SD0ST); printf("st=%02x\n", status);*/ enable_irq(IRQ_DMASCH0); } /* End of beep.c */