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/* $OpenBSD: daadio.c,v 1.6 2004/09/29 07:35:11 miod Exp $ */
/*
* Copyright (c) 1999 Jason L. Wright (jason@thought.net)
* All rights reserved.
*
* This software was developed by Jason L. Wright under contract with
* RTMX Incorporated (http://www.rtmx.com).
*
* 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.
*
* 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.
*/
/*
* Driver for the MATRIX Corporation MD-DAADIO digital->analog,
* analog->digial, parallel i/o VME board.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/conf.h>
#include <sys/fcntl.h>
#include <sys/proc.h>
#include <machine/autoconf.h>
#include <sparc/cpu.h>
#include <sparc/sparc/cpuvar.h>
#include <sparc/dev/sbusvar.h>
#include <sparc/dev/dmareg.h> /* for SBUS_BURST_* */
#include <machine/daadioio.h>
#include <sparc/dev/fgareg.h>
#include <sparc/dev/fgavar.h>
#include <sparc/dev/daadioreg.h>
int daadiomatch(struct device *, void *, void *);
void daadioattach(struct device *, struct device *, void *);
int daadiointr(void *);
struct daadio_softc {
struct device sc_dv; /* base device */
struct daadioregs *sc_regs; /* registers */
struct intrhand sc_ih; /* interrupt vectoring */
struct daadio_adc *sc_adc_p;
int sc_adc_done;
int sc_flags; /* flags */
#define DAF_LOCKED 0x1
#define DAF_WANTED 0x2
u_int16_t sc_adc_val;
u_int8_t sc_ier; /* software copy of ier */
};
struct cfattach daadio_ca = {
sizeof (struct daadio_softc), daadiomatch, daadioattach
};
struct cfdriver daadio_cd = {
NULL, "daadio", DV_DULL
};
void daadio_ier_setbit(struct daadio_softc *, u_int8_t);
void daadio_ier_clearbit(struct daadio_softc *, u_int8_t);
int daadio_adc(struct daadio_softc *, struct daadio_adc *);
int daadioopen(dev_t, int, int, struct proc *);
int daadioclose(dev_t, int, int, struct proc *);
int daadioioctl(dev_t, u_long, caddr_t, int, struct proc *);
int
daadiomatch(parent, vcf, aux)
struct device *parent;
void *vcf, *aux;
{
struct cfdata *cf = vcf;
struct confargs *ca = aux;
struct daadioregs *regs;
if (ca->ca_bustype != BUS_FGA_A16D16)
return (0);
if (strcmp(ca->ca_ra.ra_name, cf->cf_driver->cd_name))
return (0);
if (ca->ca_ra.ra_reg[0].rr_len < sizeof(struct daadioboard))
return (0);
regs = ca->ca_ra.ra_reg[0].rr_paddr;
if (probeget((caddr_t)®s->sid, 1) != -1)
return (1);
return (0);
}
void
daadioattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct confargs *ca = aux;
struct daadio_softc *sc = (struct daadio_softc *)self;
sc->sc_regs = mapiodev(&(ca->ca_ra.ra_reg[0]), 0,
sizeof(struct daadioboard));
sc->sc_regs->pio_pattern = sc->sc_regs->pio_porta;
sc->sc_regs->sid = ca->ca_ra.ra_intr[0].int_vec;
sc->sc_regs->gvrilr &= ~ILR_IRQ_MASK;
sc->sc_regs->gvrilr |= (ca->ca_ra.ra_intr[0].int_pri << ILR_IRQ_SHIFT)
& ILR_IRQ_MASK;
sc->sc_ih.ih_fun = daadiointr;
sc->sc_ih.ih_arg = sc;
fvmeintrestablish(parent, ca->ca_ra.ra_intr[0].int_vec,
ca->ca_ra.ra_intr[0].int_pri, &sc->sc_ih, self->dv_xname);
daadio_ier_setbit(sc, IER_PIOEVENT);
daadio_ier_setbit(sc, IER_CONVERSION);
printf(": level %d vec 0x%x\n",
ca->ca_ra.ra_intr[0].int_pri, ca->ca_ra.ra_intr[0].int_vec);
}
int
daadiointr(vsc)
void *vsc;
{
struct daadio_softc *sc = vsc;
struct daadioregs *regs = sc->sc_regs;
u_int8_t val, isr;
int r = 0;
isr = regs->isr;
if (isr & ISR_PIOEVENT) {
val = regs->pio_porta;
printf("pio value: %x\n", val);
r = 1;
regs->pio_pattern = val;
}
if (isr & ISR_CONVERSION) {
r = 1;
sc->sc_adc_val = sc->sc_regs->adc12bit[0];
sc->sc_adc_done = 1;
if (sc->sc_adc_p != NULL)
wakeup(sc->sc_adc_p);
}
return (r);
}
void
daadio_ier_setbit(sc, v)
struct daadio_softc *sc;
u_int8_t v;
{
sc->sc_ier |= v;
sc->sc_regs->ier = sc->sc_ier;
}
void
daadio_ier_clearbit(sc, v)
struct daadio_softc *sc;
u_int8_t v;
{
sc->sc_ier &= ~v;
sc->sc_regs->ier = sc->sc_ier;
}
#define DAADIO_CARD(d) ((minor(d) >> 6) & 3)
int
daadioopen(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
struct daadio_softc *sc;
int card = DAADIO_CARD(dev);
if (card >= daadio_cd.cd_ndevs)
return (ENXIO);
sc = daadio_cd.cd_devs[card];
if (sc == NULL)
return (ENXIO);
return (0);
}
int
daadioclose(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
return (0);
}
int
daadioioctl(dev, cmd, data, flags, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flags;
struct proc *p;
{
struct daadio_softc *sc = daadio_cd.cd_devs[DAADIO_CARD(dev)];
struct daadio_adc *adc = (struct daadio_adc *)data;
struct daadio_dac *dac = (struct daadio_dac *)data;
struct daadio_pio *pio = (struct daadio_pio *)data;
int error = 0;
u_int8_t reg, val;
switch (cmd) {
case DIOGADC:
error = daadio_adc(sc, adc);
break;
case DIOGPIO:
switch (pio->dap_reg) {
case 0:
pio->dap_val = sc->sc_regs->pio_porta;
break;
case 1:
pio->dap_val = sc->sc_regs->pio_portb;
break;
case 2:
pio->dap_val = sc->sc_regs->pio_portc;
break;
case 3:
pio->dap_val = sc->sc_regs->pio_portd;
break;
case 4:
pio->dap_val = sc->sc_regs->pio_porte;
break;
case 5:
pio->dap_val = sc->sc_regs->pio_portf;
break;
default:
error = EINVAL;
break;
}
break;
case DIOSPIO:
if ((flags & FWRITE) == 0) {
error = EPERM;
break;
}
switch (pio->dap_reg) {
case 0:
sc->sc_regs->pio_porta = pio->dap_val;
break;
case 1:
sc->sc_regs->pio_portb = pio->dap_val;
break;
case 2:
sc->sc_regs->pio_portc = pio->dap_val;
break;
case 3:
sc->sc_regs->pio_portd = pio->dap_val;
break;
case 4:
sc->sc_regs->pio_porte = pio->dap_val;
break;
case 5:
sc->sc_regs->pio_portf = pio->dap_val;
break;
default:
error = EINVAL;
break;
}
break;
case DIOSOPIO:
if ((flags & FWRITE) == 0) {
error = EPERM;
break;
}
if (pio->dap_reg >= 6) {
error = EINVAL;
break;
}
reg = sc->sc_regs->pio_oc;
val = (1 << pio->dap_reg);
if (pio->dap_val)
reg |= val;
else
reg &= ~val;
sc->sc_regs->pio_oc = reg;
break;
case DIOGOPIO:
if (pio->dap_reg >= 6) {
error = EINVAL;
break;
}
reg = sc->sc_regs->pio_oc;
val = (1 << pio->dap_reg);
if ((reg & val) != 0)
pio->dap_val = 1;
else
pio->dap_val = 0;
break;
case DIOSDAC:
if ((flags & FWRITE) == 0) {
error = EPERM;
break;
}
if (dac->dac_reg >= 8) {
error = EINVAL;
break;
}
sc->sc_regs->dac_channel[dac->dac_reg] = dac->dac_val;
break;
default:
error = ENOTTY;
}
return (error);
}
int
daadio_adc(sc, adc)
struct daadio_softc *sc;
struct daadio_adc *adc;
{
int s, err = 0;
if (adc->dad_reg >= 32)
return (EINVAL);
s = splhigh();
/* Lock device. */
while ((sc->sc_flags & DAF_LOCKED) != 0) {
sc->sc_flags |= DAF_WANTED;
if ((err = tsleep(sc, PWAIT, "daadio", 0)) != 0)
goto out;
}
sc->sc_flags |= DAF_LOCKED;
/* Start conversion. */
sc->sc_adc_done = 0;
sc->sc_adc_p = adc;
sc->sc_regs->adc12bit[adc->dad_reg] = 0;
/* Wait for conversion. */
while (sc->sc_adc_done == 0)
if ((err = tsleep(sc->sc_adc_p, PWAIT, "daadio", 0)) != 0)
goto out;
sc->sc_adc_p = NULL;
adc->dad_val = sc->sc_adc_val;
/* Unlock device. */
sc->sc_flags &= ~DAF_LOCKED;
if (sc->sc_flags & DAF_WANTED) {
sc->sc_flags &= ~DAF_WANTED;
wakeup(sc);
}
out:
splx(s);
return (err);
}
|
