377 lines
10 KiB
C
377 lines
10 KiB
C
/* $NetBSD: asc.c,v 1.48 2007/01/24 13:08:12 hubertf Exp $ */
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/*
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* Copyright (C) 1997 Scott Reynolds
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo,
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* Michael L. Finch, Bradley A. Grantham, and
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* Lawrence A. Kesteloot
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the Alice Group.
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* 4. The names of the Alice Group or any of its members may not be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* ASC driver code and console bell support
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: asc.c,v 1.48 2007/01/24 13:08:12 hubertf Exp $");
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#include <sys/types.h>
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#include <sys/errno.h>
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#include <sys/time.h>
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#include <sys/systm.h>
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/conf.h>
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#include <uvm/uvm_extern.h>
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#include <machine/autoconf.h>
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#include <machine/cpu.h>
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#include <machine/bus.h>
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#include <machine/viareg.h>
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#include <mac68k/obio/ascvar.h>
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#include <mac68k/obio/obiovar.h>
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#define MAC68K_ASC_BASE 0x50f14000
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#define MAC68K_IIFX_ASC_BASE 0x50f10000
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#define MAC68K_ASC_LEN 0x01000
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#ifdef DEBUG
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#define ASC_DEBUG
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#endif
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#ifdef ASC_DEBUG
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int asc_debug = 0; /* non-zero enables debugging output */
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#endif
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static u_int8_t asc_wave_tab[0x800];
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static int asc_ring_bell(void *, int, int, int);
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static void asc_stop_bell(void *);
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#if __notyet__
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static void asc_intr_enable(void);
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static void asc_intr(void *);
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#endif
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static int ascmatch(struct device *, struct cfdata *, void *);
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static void ascattach(struct device *, struct device *, void *);
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CFATTACH_DECL(asc, sizeof(struct asc_softc),
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ascmatch, ascattach, NULL, NULL);
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extern struct cfdriver asc_cd;
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dev_type_open(ascopen);
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dev_type_close(ascclose);
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dev_type_read(ascread);
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dev_type_write(ascwrite);
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dev_type_ioctl(ascioctl);
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dev_type_mmap(ascmmap);
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const struct cdevsw asc_cdevsw = {
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ascopen, ascclose, ascread, ascwrite, ascioctl,
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nostop, notty, nopoll, ascmmap, nokqfilter,
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};
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static int
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ascmatch(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct obio_attach_args *oa = (struct obio_attach_args *)aux;
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bus_addr_t addr;
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bus_space_handle_t bsh;
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int rval = 0;
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if (oa->oa_addr != (-1))
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addr = (bus_addr_t)oa->oa_addr;
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else if (current_mac_model->machineid == MACH_MACTV)
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return 0;
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else if (current_mac_model->machineid == MACH_MACIIFX)
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addr = (bus_addr_t)MAC68K_IIFX_ASC_BASE;
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else
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addr = (bus_addr_t)MAC68K_ASC_BASE;
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if (bus_space_map(oa->oa_tag, addr, MAC68K_ASC_LEN, 0, &bsh))
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return (0);
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if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0, 1))
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rval = 1;
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else
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rval = 0;
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bus_space_unmap(oa->oa_tag, bsh, MAC68K_ASC_LEN);
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return rval;
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}
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static void
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ascattach(struct device *parent, struct device *self, void *aux)
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{
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struct asc_softc *sc = (struct asc_softc *)self;
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struct obio_attach_args *oa = (struct obio_attach_args *)aux;
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bus_addr_t addr;
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int i;
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sc->sc_tag = oa->oa_tag;
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if (oa->oa_addr != (-1))
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addr = (bus_addr_t)oa->oa_addr;
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else if (current_mac_model->machineid == MACH_MACIIFX)
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addr = (bus_addr_t)MAC68K_IIFX_ASC_BASE;
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else
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addr = (bus_addr_t)MAC68K_ASC_BASE;
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if (bus_space_map(sc->sc_tag, addr, MAC68K_ASC_LEN, 0,
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&sc->sc_handle)) {
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printf(": can't map memory space\n");
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return;
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}
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sc->sc_open = 0;
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sc->sc_ringing = 0;
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callout_init(&sc->sc_bell_ch);
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for (i = 0; i < 256; i++) { /* up part of wave, four voices? */
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asc_wave_tab[i] = i / 4;
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asc_wave_tab[i + 512] = i / 4;
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asc_wave_tab[i + 1024] = i / 4;
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asc_wave_tab[i + 1536] = i / 4;
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}
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for (i = 0; i < 256; i++) { /* down part of wave, four voices? */
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asc_wave_tab[i + 256] = 0x3f - (i / 4);
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asc_wave_tab[i + 768] = 0x3f - (i / 4);
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asc_wave_tab[i + 1280] = 0x3f - (i / 4);
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asc_wave_tab[i + 1792] = 0x3f - (i / 4);
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}
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printf(": Apple Sound Chip");
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if (oa->oa_addr != (-1))
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printf(" at %x", oa->oa_addr);
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printf("\n");
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mac68k_set_bell_callback(asc_ring_bell, sc);
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#if __notyet__
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if (mac68k_machine.aux_interrupts) {
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intr_establish((int (*)(void *))asc_intr, sc, 5);
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} else {
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via2_register_irq(VIA2_ASC, asc_intr, sc);
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}
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asc_intr_enable();
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#endif
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}
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int
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ascopen(dev_t dev, int flag, int mode, struct lwp *l)
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{
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struct asc_softc *sc;
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int unit;
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unit = ASCUNIT(dev);
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sc = asc_cd.cd_devs[unit];
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if (unit >= asc_cd.cd_ndevs)
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return (ENXIO);
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if (sc->sc_open)
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return (EBUSY);
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sc->sc_open = 1;
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return (0);
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}
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int
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ascclose(dev_t dev, int flag, int mode, struct lwp *l)
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{
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struct asc_softc *sc;
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sc = asc_cd.cd_devs[ASCUNIT(dev)];
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sc->sc_open = 0;
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return (0);
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}
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int
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ascread(dev_t dev, struct uio *uio, int ioflag)
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{
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return (ENXIO);
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}
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int
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ascwrite(dev_t dev, struct uio *uio, int ioflag)
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{
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return (ENXIO);
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}
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int
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ascioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct lwp *l)
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{
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struct asc_softc *sc;
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int error;
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int unit = ASCUNIT(dev);
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sc = asc_cd.cd_devs[unit];
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error = 0;
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switch (cmd) {
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default:
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error = EINVAL;
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break;
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}
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return (error);
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}
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paddr_t
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ascmmap(dev_t dev, off_t off, int prot)
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{
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int unit = ASCUNIT(dev);
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struct asc_softc *sc;
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paddr_t pa;
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sc = asc_cd.cd_devs[unit];
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if ((u_int)off < MAC68K_ASC_LEN) {
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(void) pmap_extract(pmap_kernel(), (vaddr_t)sc->sc_handle.base,
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&pa);
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return m68k_btop(pa + off);
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}
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return (-1);
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}
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static int
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asc_ring_bell(void *arg, int freq, int length, int volume)
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{
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struct asc_softc *sc = (struct asc_softc *)arg;
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unsigned long cfreq;
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int i;
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if (!sc)
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return (ENODEV);
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if (sc->sc_ringing == 0) {
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bus_space_write_multi_1(sc->sc_tag, sc->sc_handle,
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0, 0, 0x800);
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bus_space_write_region_1(sc->sc_tag, sc->sc_handle,
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0, asc_wave_tab, 0x800);
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/* Fix this. Need to find exact ASC sampling freq */
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cfreq = 65536 * freq / 466;
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/* printf("beep: from %d, %02x %02x %02x %02x\n",
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* cur_beep.freq, (cfreq >> 24) & 0xff, (cfreq >> 16) & 0xff,
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* (cfreq >> 8) & 0xff, (cfreq) & 0xff); */
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for (i = 0; i < 8; i++) {
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bus_space_write_1(sc->sc_tag, sc->sc_handle,
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0x814 + 8 * i, (cfreq >> 24) & 0xff);
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bus_space_write_1(sc->sc_tag, sc->sc_handle,
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0x815 + 8 * i, (cfreq >> 16) & 0xff);
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bus_space_write_1(sc->sc_tag, sc->sc_handle,
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0x816 + 8 * i, (cfreq >> 8) & 0xff);
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bus_space_write_1(sc->sc_tag, sc->sc_handle,
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0x817 + 8 * i, (cfreq) & 0xff);
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} /* frequency; should put cur_beep.freq in here
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* somewhere. */
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bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x807, 3); /* 44 ? */
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bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x806,
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255 * volume / 100);
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bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x805, 0);
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bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x80f, 0);
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bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x802, 2); /* sampled */
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bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x801, 2); /* enable sampled */
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sc->sc_ringing = 1;
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callout_reset(&sc->sc_bell_ch, length, asc_stop_bell, sc);
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}
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return (0);
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}
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static void
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asc_stop_bell(void *arg)
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{
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struct asc_softc *sc = (struct asc_softc *)arg;
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if (!sc)
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return;
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if (sc->sc_ringing > 1000 || sc->sc_ringing < 0)
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panic("bell got out of sync?");
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if (--sc->sc_ringing == 0) /* disable ASC */
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bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x801, 0);
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}
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#if __notyet__
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static void
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asc_intr_enable(void)
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{
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int s;
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s = splhigh();
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if (VIA2 == VIA2OFF)
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via2_reg(vIER) = 0x80 | V2IF_ASC;
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else
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via2_reg(rIER) = 0x80 | V2IF_ASC;
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splx(s);
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}
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/*ARGSUSED*/
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static void
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asc_intr(void *arg)
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{
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#ifdef ASC_DEBUG
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struct asc_softc *sc = (struct asc_softc *)arg;
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if (asc_debug)
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printf("asc_intr(%p)\n", sc);
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#endif
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}
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#endif
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