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NetBSD/sys/dev/isa/pas.c

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/* $NetBSD: pas.c,v 1.4 1995/03/25 00:01:19 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: pas.c,v 1.4 1995/03/25 00:01:19 mycroft Exp $
*/
/*
* Todo:
* - look at other PAS drivers (for PAS native suport)
* - use common sb.c once emulation is setup
*/
#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 DEFINE_TRANSLATIONS
#include <i386/isa/pasreg.h>
#define DEBUG /*XXX*/
#ifdef 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 device sc_dev; /* base device */
struct isadev sc_id; /* ISA device */
struct intrhand sc_ih; /* interrupt vectoring */
u_short sc_iobase; /* PAS iobase */
u_short sc_irq; /* PAS irq */
u_short sc_drq; /* PAS drq */
int model;
int rev;
struct sbdsp_softc sc_sbdsp;
};
int pasopen __P((dev_t, int));
int pasprobe();
void pasattach();
int pas_getdev __P((void *, struct audio_device *));
/*
* 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,
sbdsp_expand,
sbdsp_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(int model, int sbbase, int sbirq, int sbdrq)
{
int i;
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);
}
struct cfdriver pascd = {
NULL, "pas", pasprobe, pasattach, DV_DULL, sizeof(struct pas_softc)
};
/*
* Probe / attach routines.
*/
/*
* Probe for the soundblaster hardware.
*/
int
pasprobe(parent, self, aux)
struct device *parent, *self;
void *aux;
{
register struct pas_softc *sc = (void *)self;
register struct isa_attach_args *ia = aux;
register u_short 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) {
int irq = ia->ia_irq;
if (irq == IRQUNK) {
printf("pas: sb emulation requires known irq\n");
return (0);
}
irq = ia->ia_irq;
pasconf(sc->model, ia->ia_iobase, irq, 1);
} else {
DPRINTF(("pas: could not probe pas\n"));
return (0);
}
/* Now a SoundBlaster */
sc->sc_iobase = ia->ia_iobase;
/* and set the SB iobase into the DSP as well ... */
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)) {
int irq = ia->ia_irq;
printf("pas: configured irq %d invalid\n", 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;
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(1, &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 u_short iobase = ia->ia_iobase;
sc->sc_iobase = 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);
#ifdef NEWCONFIG
/*
* We limit DMA transfers to a page, and use the generic DMA handling
* code in isa.c. This code can end up copying a buffer, but since
* the audio driver uses relative small buffers this isn't likely.
*
* This allocation scheme means that the maximum transfer is limited
* by the page size (rather than 64k). This is reasonable. For 4K
* pages, the transfer time at 48KHz is 4096 / 48000 = 85ms. This
* is plenty long enough to amortize any fixed time overhead.
*/
at_setup_dmachan(sc->sc_dmachan, NBPG);
#endif
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 (audio_hardware_attach(&pas_hw_if, &sc->sc_sbdsp) != 0)
printf("pas: could not attach to audio pseudo-device driver\n");
}
int
pasopen(dev, flags)
dev_t dev;
int flags;
{
struct pas_softc *sc;
int unit = AUDIOUNIT(dev);
if (unit >= pascd.cd_ndevs)
return ENODEV;
sc = pascd.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;
}
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