NetBSD/sys/dev/isa/sb.c

309 lines
7.7 KiB
C

/* $NetBSD: sb.c,v 1.56 1997/11/12 20:28:42 augustss 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.
*
*/
#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/intr.h>
#include <machine/bus.h>
#include <machine/pio.h>
#include <sys/audioio.h>
#include <dev/audio_if.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isadmavar.h>
#include <dev/isa/sbreg.h>
#include <dev/isa/sbvar.h>
#include <dev/isa/sbdspvar.h>
struct cfdriver sb_cd = {
NULL, "sb", DV_DULL
};
struct audio_device sb_device = {
"SoundBlaster",
"x",
"sb"
};
int sb_getdev __P((void *, struct audio_device *));
/*
* Define our interface to the higher level audio driver.
*/
struct audio_hw_if sb_hw_if = {
sbdsp_open,
sbdsp_close,
0,
sbdsp_query_encoding,
sbdsp_set_params,
sbdsp_round_blocksize,
0,
sbdsp_dma_init_output,
sbdsp_dma_init_input,
sbdsp_dma_output,
sbdsp_dma_input,
sbdsp_haltdma,
sbdsp_haltdma,
sbdsp_speaker_ctl,
sb_getdev,
0,
sbdsp_mixer_set_port,
sbdsp_mixer_get_port,
sbdsp_mixer_query_devinfo,
sb_malloc,
sb_free,
sb_round,
sb_mappage,
sbdsp_get_props,
};
/*
* Probe / attach routines.
*/
int
sbmatch(sc)
struct sbdsp_softc *sc;
{
static u_char drq_conf[8] = {
0x01, 0x02, -1, 0x08, -1, 0x20, 0x40, 0x80
};
static u_char irq_conf[11] = {
-1, -1, 0x01, -1, -1, 0x02, -1, 0x04, -1, 0x01, 0x08
};
if (sbdsp_probe(sc) == 0)
return 0;
/*
* Cannot auto-discover DMA channel.
*/
if (ISSBPROCLASS(sc)) {
if (!SBP_DRQ_VALID(sc->sc_drq8)) {
printf("%s: configured dma chan %d invalid\n",
sc->sc_dev.dv_xname, sc->sc_drq8);
return 0;
}
} else {
if (!SB_DRQ_VALID(sc->sc_drq8)) {
printf("%s: configured dma chan %d invalid\n",
sc->sc_dev.dv_xname, sc->sc_drq8);
return 0;
}
}
if (0 <= sc->sc_drq16 && sc->sc_drq16 <= 3)
/*
* XXX Some ViBRA16 cards seem to have two 8 bit DMA
* channels. I've no clue how to use them, so ignore
* one of them for now. -- augustss@netbsd.org
*/
sc->sc_drq16 = -1;
if (ISSB16CLASS(sc)) {
if (sc->sc_drq16 == -1)
sc->sc_drq16 = sc->sc_drq8;
if (!SB16_DRQ_VALID(sc->sc_drq16)) {
printf("%s: configured dma chan %d invalid\n",
sc->sc_dev.dv_xname, sc->sc_drq16);
return 0;
}
} else
sc->sc_drq16 = sc->sc_drq8;
#ifdef NEWCONFIG
/*
* If the IRQ wasn't compiled in, auto-detect it.
*/
if (sc->sc_irq == IRQUNK) {
sc->sc_irq = isa_discoverintr(sbforceintr, sc);
sbdsp_reset(sc);
if (ISSBPROCLASS(sc)) {
if (!SBP_IRQ_VALID(sc->sc_irq)) {
printf("%s: couldn't auto-detect interrupt\n",
sc->sc_dev.dv_xname);
return 0;
}
}
else {
if (!SB_IRQ_VALID(sc->sc_irq)) {
printf("%s: couldn't auto-detect interrupt\n");
sc->sc_dev.dv_xname);
return 0;
}
}
} else
#endif
if (ISSBPROCLASS(sc)) {
if (!SBP_IRQ_VALID(sc->sc_irq)) {
printf("%s: configured irq %d invalid\n",
sc->sc_dev.dv_xname, sc->sc_irq);
return 0;
}
} else {
if (!SB_IRQ_VALID(sc->sc_irq)) {
printf("%s: configured irq %d invalid\n",
sc->sc_dev.dv_xname, sc->sc_irq);
return 0;
}
}
if (ISSB16CLASS(sc)) {
int w, r;
#if 0
printf("%s: old drq conf %02x\n", sc->sc_dev.dv_xname,
sbdsp_mix_read(sc, SBP_SET_DRQ));
printf("%s: try drq conf %02x\n", sc->sc_dev.dv_xname,
drq_conf[sc->sc_drq16] | drq_conf[sc->sc_drq8]);
#endif
w = drq_conf[sc->sc_drq16] | drq_conf[sc->sc_drq8];
sbdsp_mix_write(sc, SBP_SET_DRQ, w);
r = sbdsp_mix_read(sc, SBP_SET_DRQ) & 0xeb;
if (r != w) {
printf("%s: setting drq mask %02x failed, got %02x\n",
sc->sc_dev.dv_xname, w, r);
return 0;
}
#if 0
printf("%s: new drq conf %02x\n", sc->sc_dev.dv_xname,
sbdsp_mix_read(sc, SBP_SET_DRQ));
#endif
#if 0
printf("%s: old irq conf %02x\n", sc->sc_dev.dv_xname,
sbdsp_mix_read(sc, SBP_SET_IRQ));
printf("%s: try irq conf %02x\n", sc->sc_dev.dv_xname,
irq_conf[sc->sc_irq]);
#endif
w = irq_conf[sc->sc_irq];
sbdsp_mix_write(sc, SBP_SET_IRQ, w);
r = sbdsp_mix_read(sc, SBP_SET_IRQ) & 0x0f;
if (r != w) {
printf("%s: setting irq mask %02x failed, got %02x\n",
sc->sc_dev.dv_xname, w, r);
return 0;
}
#if 0
printf("%s: new irq conf %02x\n", sc->sc_dev.dv_xname,
sbdsp_mix_read(sc, SBP_SET_IRQ));
#endif
}
return 1;
}
void
sbattach(sc)
struct sbdsp_softc *sc;
{
sc->sc_ih = isa_intr_establish(sc->sc_ic, sc->sc_irq, IST_EDGE,
IPL_AUDIO, sbdsp_intr, sc);
sbdsp_attach(sc);
audio_attach_mi(&sb_hw_if, 0, sc, &sc->sc_dev);
}
#ifdef NEWCONFIG
void
sbforceintr(aux)
void *aux;
{
static char dmabuf;
struct sbdsp_softc *sc = aux;
/*
* 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, sc->sc_drq8);
if (sbdsp_wdsp(sc, SB_DSP_RDMA) == 0) {
(void)sbdsp_wdsp(sc, 0);
(void)sbdsp_wdsp(sc, 0);
}
}
#endif
/*
* Various routines to interface to higher level audio driver
*/
int
sb_getdev(addr, retp)
void *addr;
struct audio_device *retp;
{
struct sbdsp_softc *sc = addr;
static char *names[] = SB_NAMES;
char *config;
if (sc->sc_model == SB_JAZZ)
strncpy(retp->name, "MV Jazz16", sizeof(retp->name));
else
strncpy(retp->name, "SoundBlaster", sizeof(retp->name));
sprintf(retp->version, "%d.%02d",
SBVER_MAJOR(sc->sc_version),
SBVER_MINOR(sc->sc_version));
if (0 <= sc->sc_model && sc->sc_model < sizeof names / sizeof names[0])
config = names[sc->sc_model];
else
config = "??";
strncpy(retp->config, config, sizeof(retp->config));
return 0;
}