NetBSD/sys/dev/isa/sb.c

325 lines
7.8 KiB
C

/* $NetBSD: sb.c,v 1.22 1995/03/25 00:01:23 mycroft 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.
*
* $Id: sb.c,v 1.22 1995/03/25 00:01:23 mycroft Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <machine/cpu.h>
#include <machine/pio.h>
#include <sys/audioio.h>
#include <dev/audio_if.h>
#include <i386/isa/isavar.h>
#include <i386/isa/dmavar.h>
#include <i386/isa/icu.h>
#include <i386/isa/sbdspvar.h>
#include <i386/isa/sbreg.h>
#define DEBUG /*XXX*/
#ifdef DEBUG
#define DPRINTF(x) if (sbdebug) printf x
int sbdebug = 0;
#else
#define DPRINTF(x)
#endif
struct sb_softc {
struct device sc_dev; /* base device */
struct isadev sc_id; /* ISA device */
struct intrhand sc_ih; /* interrupt vectoring */
struct sbdsp_softc sc_sbdsp;
};
int sbprobe();
void sbattach __P((struct device *, struct device *, void *));
struct cfdriver sbcd = {
NULL, "sb", sbprobe, sbattach, DV_DULL, sizeof(struct sb_softc)
};
struct audio_device sb_device = {
"SoundBlaster",
"x",
"sb"
};
int sbopen __P((dev_t, int));
int sbprobe();
void sbattach();
int sb_getdev __P((void *, struct audio_device *));
/*
* Define our interface to the higher level audio driver.
*/
struct audio_hw_if sb_hw_if = {
sbopen,
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,
sbdsp_expand,
sbdsp_compress,
sbdsp_dma_output,
sbdsp_dma_input,
sbdsp_haltdma,
sbdsp_haltdma,
sbdsp_contdma,
sbdsp_contdma,
sbdsp_speaker_ctl,
sb_getdev,
sbdsp_setfd,
sbdsp_mixer_set_port,
sbdsp_mixer_get_port,
sbdsp_mixer_query_devinfo,
0, /* not full-duplex */
0
};
/*
* Probe / attach routines.
*/
/*
* Probe for the soundblaster hardware.
*/
int
sbprobe(parent, self, aux)
struct device *parent, *self;
void *aux;
{
register struct sb_softc *sc = (void *)self;
register struct isa_attach_args *ia = aux;
register u_short iobase = ia->ia_iobase;
static u_char irq_conf[11] = {
-1, -1, 0x01, -1, -1, 0x02, -1, 0x04, -1, 0x01, 0x08
};
if (!SB_BASE_VALID(ia->ia_iobase)) {
printf("sb: configured iobase %d invalid\n", ia->ia_iobase);
return 0;
}
sc->sc_sbdsp.sc_iobase = iobase;
if (sbdsp_probe(&sc->sc_sbdsp) == 0) {
DPRINTF(("sb: sbdsp probe failed\n"));
return 0;
}
/*
* Cannot auto-discover DMA channel.
*/
if (ISSBPROCLASS(&sc->sc_sbdsp)) {
if (!SBP_DRQ_VALID(ia->ia_drq)) {
printf("sb: configured dma chan %d invalid\n", ia->ia_drq);
return 0;
}
if (ISSB16CLASS(&sc->sc_sbdsp)) {
sbdsp_mix_write(&sc->sc_sbdsp, SBP_SET_DRQ,
1 << ia->ia_drq);
}
}
else {
if (!SB_DRQ_VALID(ia->ia_drq)) {
printf("sb: 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(sbforceintr, aux);
sbdsp_reset(&sc->sc_sbdsp);
if (ISSBPROCLASS(&sc->sc_sbdsp)) {
if (!SBP_IRQ_VALID(ia->ia_irq)) {
printf("sb: couldn't auto-detect interrupt");
return 0;
}
}
else {
if (!SB_IRQ_VALID(ia->ia_irq)) {
printf("sb: couldn't auto-detect interrupt");
return 0;
}
}
} else
#endif
if (ISSBPROCLASS(&sc->sc_sbdsp)) {
if (!SBP_IRQ_VALID(ia->ia_irq)) {
printf("sb: configured irq %d invalid\n", ia->ia_irq);
return 0;
}
if (ISSB16CLASS(&sc->sc_sbdsp)) {
sbdsp_mix_write(&sc->sc_sbdsp, SBP_SET_IRQ,
irq_conf[ia->ia_irq]);
}
}
else {
if (!SB_IRQ_VALID(ia->ia_irq)) {
printf("sb: configured irq %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 (ISSBPROCLASS(&sc->sc_sbdsp))
ia->ia_iosize = SBP_NPORT;
else
ia->ia_iosize = SB_NPORT;
return 1;
}
#ifdef NEWCONFIG
void
sbforceintr(aux)
void *aux;
{
static char dmabuf;
struct isa_attach_args *ia = aux;
u_short 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(B_READ, &dmabuf, 1, ia->ia_drq);
if (sbdsp_wdsp(iobase, SB_DSP_RDMA) == 0) {
(void)sbdsp_wdsp(iobase, 0);
(void)sbdsp_wdsp(iobase, 0);
}
}
#endif
/*
* Attach hardware to driver, attach hardware driver to audio
* pseudo-device driver .
*/
void
sbattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
register struct sb_softc *sc = (struct sb_softc *)self;
struct isa_attach_args *ia = (struct isa_attach_args *)aux;
register u_short iobase = ia->ia_iobase;
#ifdef NEWCONFIG
isa_establish(&sc->sc_id, &sc->sc_dev);
#endif
sc->sc_ih.ih_fun = sbdsp_intr;
sc->sc_ih.ih_arg = &sc->sc_sbdsp;
sc->sc_ih.ih_level = IPL_BIO;
intr_establish(ia->ia_irq, IST_EDGE, &sc->sc_ih);
sbdsp_attach(&sc->sc_sbdsp);
sprintf(sb_device.version, "%d.%d",
SBVER_MAJOR(sc->sc_sbdsp.sc_model),
SBVER_MINOR(sc->sc_sbdsp.sc_model));
if (audio_hardware_attach(&sb_hw_if, &sc->sc_sbdsp) != 0)
printf("sb: could not attach to audio pseudo-device driver\n");
}
/*
* Various routines to interface to higher level audio driver
*/
int
sbopen(dev, flags)
dev_t dev;
int flags;
{
struct sb_softc *sc;
int unit = AUDIOUNIT(dev);
if (unit >= sbcd.cd_ndevs)
return ENODEV;
sc = sbcd.cd_devs[unit];
if (!sc)
return ENXIO;
return sbdsp_open(&sc->sc_sbdsp, dev, flags);
}
int
sb_getdev(addr, retp)
void *addr;
struct audio_device *retp;
{
*retp = sb_device;
return 0;
}