522 lines
12 KiB
C
522 lines
12 KiB
C
/* $NetBSD: ppi.c,v 1.16 1998/01/12 18:31:05 thorpej Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jason R. Thorpe.
|
|
*
|
|
* 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 NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1982, 1990, 1993
|
|
* The 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 University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* 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.
|
|
*
|
|
* @(#)ppi.c 8.1 (Berkeley) 6/16/93
|
|
*/
|
|
|
|
/*
|
|
* Printer/Plotter HPIB interface
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/device.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/uio.h>
|
|
|
|
#include <hp300/dev/hpibvar.h>
|
|
|
|
#include <hp300/dev/ppiioctl.h>
|
|
|
|
struct ppi_softc {
|
|
struct device sc_dev;
|
|
int sc_flags;
|
|
struct hpibqueue sc_hq; /* HP-IB job queue entry */
|
|
struct ppiparam sc_param;
|
|
#define sc_burst sc_param.burst
|
|
#define sc_timo sc_param.timo
|
|
#define sc_delay sc_param.delay
|
|
int sc_sec;
|
|
int sc_slave; /* HP-IB slave address */
|
|
};
|
|
|
|
/* sc_flags values */
|
|
#define PPIF_ALIVE 0x01
|
|
#define PPIF_OPEN 0x02
|
|
#define PPIF_UIO 0x04
|
|
#define PPIF_TIMO 0x08
|
|
#define PPIF_DELAY 0x10
|
|
|
|
int ppimatch __P((struct device *, struct cfdata *, void *));
|
|
void ppiattach __P((struct device *, struct device *, void *));
|
|
|
|
struct cfattach ppi_ca = {
|
|
sizeof(struct ppi_softc), ppimatch, ppiattach
|
|
};
|
|
|
|
extern struct cfdriver ppi_cd;
|
|
|
|
void ppistart __P((void *));
|
|
void ppinoop __P((void *));
|
|
|
|
void ppitimo __P((void *));
|
|
int ppirw __P((dev_t, struct uio *));
|
|
int ppihztoms __P((int));
|
|
int ppimstohz __P((int));
|
|
|
|
bdev_decl(ppi);
|
|
cdev_decl(ppi);
|
|
|
|
#define UNIT(x) minor(x)
|
|
|
|
#ifdef DEBUG
|
|
int ppidebug = 0x80;
|
|
#define PDB_FOLLOW 0x01
|
|
#define PDB_IO 0x02
|
|
#define PDB_NOCHECK 0x80
|
|
#endif
|
|
|
|
int
|
|
ppimatch(parent, match, aux)
|
|
struct device *parent;
|
|
struct cfdata *match;
|
|
void *aux;
|
|
{
|
|
struct hpibbus_attach_args *ha = aux;
|
|
|
|
/*
|
|
* The printer/plotter doesn't return an ID tag.
|
|
* The check below prevents us from matching a CS80
|
|
* device by mistake.
|
|
*/
|
|
if (ha->ha_id & 0x200)
|
|
return (0);
|
|
|
|
/*
|
|
* To prevent matching all unused slots on the bus, we
|
|
* don't allow wildcarded locators.
|
|
*/
|
|
if (match->hpibbuscf_slave == HPIBBUSCF_SLAVE_DEFAULT ||
|
|
match->hpibbuscf_punit == HPIBBUSCF_PUNIT_DEFAULT)
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
ppiattach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct ppi_softc *sc = (struct ppi_softc *)self;
|
|
struct hpibbus_attach_args *ha = aux;
|
|
|
|
printf("\n");
|
|
|
|
sc->sc_slave = ha->ha_slave;
|
|
|
|
/* Initialize the hpib queue entry. */
|
|
sc->sc_hq.hq_softc = sc;
|
|
sc->sc_hq.hq_slave = sc->sc_slave;
|
|
sc->sc_hq.hq_start = ppistart;
|
|
sc->sc_hq.hq_go = ppinoop;
|
|
sc->sc_hq.hq_intr = ppinoop;
|
|
|
|
sc->sc_flags = PPIF_ALIVE;
|
|
}
|
|
|
|
void
|
|
ppinoop(arg)
|
|
void *arg;
|
|
{
|
|
/* Noop! */
|
|
}
|
|
|
|
int
|
|
ppiopen(dev, flags, fmt, p)
|
|
dev_t dev;
|
|
int flags, fmt;
|
|
struct proc *p;
|
|
{
|
|
int unit = UNIT(dev);
|
|
struct ppi_softc *sc;
|
|
|
|
if (unit >= ppi_cd.cd_ndevs ||
|
|
(sc = ppi_cd.cd_devs[unit]) == NULL ||
|
|
(sc->sc_flags & PPIF_ALIVE) == 0)
|
|
return (ENXIO);
|
|
|
|
#ifdef DEBUG
|
|
if (ppidebug & PDB_FOLLOW)
|
|
printf("ppiopen(%x, %x): flags %x\n",
|
|
dev, flags, sc->sc_flags);
|
|
#endif
|
|
if (sc->sc_flags & PPIF_OPEN)
|
|
return (EBUSY);
|
|
sc->sc_flags |= PPIF_OPEN;
|
|
sc->sc_burst = PPI_BURST;
|
|
sc->sc_timo = ppimstohz(PPI_TIMO);
|
|
sc->sc_delay = ppimstohz(PPI_DELAY);
|
|
sc->sc_sec = -1;
|
|
return(0);
|
|
}
|
|
|
|
int
|
|
ppiclose(dev, flags, fmt, p)
|
|
dev_t dev;
|
|
int flags, fmt;
|
|
struct proc *p;
|
|
{
|
|
int unit = UNIT(dev);
|
|
struct ppi_softc *sc = ppi_cd.cd_devs[unit];
|
|
|
|
#ifdef DEBUG
|
|
if (ppidebug & PDB_FOLLOW)
|
|
printf("ppiclose(%x, %x): flags %x\n",
|
|
dev, flags, sc->sc_flags);
|
|
#endif
|
|
sc->sc_flags &= ~PPIF_OPEN;
|
|
return(0);
|
|
}
|
|
|
|
void
|
|
ppistart(arg)
|
|
void *arg;
|
|
{
|
|
struct ppi_softc *sc = arg;
|
|
|
|
#ifdef DEBUG
|
|
if (ppidebug & PDB_FOLLOW)
|
|
printf("ppistart(%x)\n", sc->sc_dev.dv_unit);
|
|
#endif
|
|
sc->sc_flags &= ~PPIF_DELAY;
|
|
wakeup(sc);
|
|
}
|
|
|
|
void
|
|
ppitimo(arg)
|
|
void *arg;
|
|
{
|
|
struct ppi_softc *sc = arg;
|
|
|
|
#ifdef DEBUG
|
|
if (ppidebug & PDB_FOLLOW)
|
|
printf("ppitimo(%x)\n", sc->sc_dev.dv_unit);
|
|
#endif
|
|
sc->sc_flags &= ~(PPIF_UIO|PPIF_TIMO);
|
|
wakeup(sc);
|
|
}
|
|
|
|
int
|
|
ppiread(dev, uio, flags)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flags;
|
|
{
|
|
|
|
#ifdef DEBUG
|
|
if (ppidebug & PDB_FOLLOW)
|
|
printf("ppiread(%x, %p)\n", dev, uio);
|
|
#endif
|
|
return (ppirw(dev, uio));
|
|
}
|
|
|
|
int
|
|
ppiwrite(dev, uio, flags)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flags;
|
|
{
|
|
|
|
#ifdef DEBUG
|
|
if (ppidebug & PDB_FOLLOW)
|
|
printf("ppiwrite(%x, %p)\n", dev, uio);
|
|
#endif
|
|
return (ppirw(dev, uio));
|
|
}
|
|
|
|
int
|
|
ppirw(dev, uio)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
{
|
|
int unit = UNIT(dev);
|
|
struct ppi_softc *sc = ppi_cd.cd_devs[unit];
|
|
int s, len, cnt;
|
|
char *cp;
|
|
int error = 0, gotdata = 0;
|
|
int buflen, ctlr, slave;
|
|
char *buf;
|
|
|
|
if (uio->uio_resid == 0)
|
|
return(0);
|
|
|
|
ctlr = sc->sc_dev.dv_parent->dv_unit;
|
|
slave = sc->sc_slave;
|
|
|
|
#ifdef DEBUG
|
|
if (ppidebug & (PDB_FOLLOW|PDB_IO))
|
|
printf("ppirw(%x, %p, %c): burst %d, timo %d, resid %x\n",
|
|
dev, uio, uio->uio_rw == UIO_READ ? 'R' : 'W',
|
|
sc->sc_burst, sc->sc_timo, uio->uio_resid);
|
|
#endif
|
|
buflen = min(sc->sc_burst, uio->uio_resid);
|
|
buf = (char *)malloc(buflen, M_DEVBUF, M_WAITOK);
|
|
sc->sc_flags |= PPIF_UIO;
|
|
if (sc->sc_timo > 0) {
|
|
sc->sc_flags |= PPIF_TIMO;
|
|
timeout(ppitimo, sc, sc->sc_timo);
|
|
}
|
|
len = cnt = 0;
|
|
while (uio->uio_resid > 0) {
|
|
len = min(buflen, uio->uio_resid);
|
|
cp = buf;
|
|
if (uio->uio_rw == UIO_WRITE) {
|
|
error = uiomove(cp, len, uio);
|
|
if (error)
|
|
break;
|
|
}
|
|
again:
|
|
s = splbio();
|
|
if ((sc->sc_flags & PPIF_UIO) &&
|
|
hpibreq(sc->sc_dev.dv_parent, &sc->sc_hq) == 0)
|
|
sleep(sc, PRIBIO+1);
|
|
/*
|
|
* Check if we timed out during sleep or uiomove
|
|
*/
|
|
(void) splsoftclock();
|
|
if ((sc->sc_flags & PPIF_UIO) == 0) {
|
|
#ifdef DEBUG
|
|
if (ppidebug & PDB_IO)
|
|
printf("ppirw: uiomove/sleep timo, flags %x\n",
|
|
sc->sc_flags);
|
|
#endif
|
|
if (sc->sc_flags & PPIF_TIMO) {
|
|
untimeout(ppitimo, sc);
|
|
sc->sc_flags &= ~PPIF_TIMO;
|
|
}
|
|
splx(s);
|
|
break;
|
|
}
|
|
splx(s);
|
|
/*
|
|
* Perform the operation
|
|
*/
|
|
if (uio->uio_rw == UIO_WRITE)
|
|
cnt = hpibsend(ctlr, slave, sc->sc_sec, cp, len);
|
|
else
|
|
cnt = hpibrecv(ctlr, slave, sc->sc_sec, cp, len);
|
|
s = splbio();
|
|
hpibfree(sc->sc_dev.dv_parent, &sc->sc_hq);
|
|
#ifdef DEBUG
|
|
if (ppidebug & PDB_IO)
|
|
printf("ppirw: %s(%d, %d, %x, %p, %d) -> %d\n",
|
|
uio->uio_rw == UIO_READ ? "recv" : "send",
|
|
ctlr, slave, sc->sc_sec, cp, len, cnt);
|
|
#endif
|
|
splx(s);
|
|
if (uio->uio_rw == UIO_READ) {
|
|
if (cnt) {
|
|
error = uiomove(cp, cnt, uio);
|
|
if (error)
|
|
break;
|
|
gotdata++;
|
|
}
|
|
/*
|
|
* Didn't get anything this time, but did in the past.
|
|
* Consider us done.
|
|
*/
|
|
else if (gotdata)
|
|
break;
|
|
}
|
|
s = splsoftclock();
|
|
/*
|
|
* Operation timeout (or non-blocking), quit now.
|
|
*/
|
|
if ((sc->sc_flags & PPIF_UIO) == 0) {
|
|
#ifdef DEBUG
|
|
if (ppidebug & PDB_IO)
|
|
printf("ppirw: timeout/done\n");
|
|
#endif
|
|
splx(s);
|
|
break;
|
|
}
|
|
/*
|
|
* Implement inter-read delay
|
|
*/
|
|
if (sc->sc_delay > 0) {
|
|
sc->sc_flags |= PPIF_DELAY;
|
|
timeout(ppistart, sc, sc->sc_delay);
|
|
error = tsleep(sc, (PCATCH|PZERO) + 1, "hpib", 0);
|
|
if (error) {
|
|
splx(s);
|
|
break;
|
|
}
|
|
}
|
|
splx(s);
|
|
/*
|
|
* Must not call uiomove again til we've used all data
|
|
* that we already grabbed.
|
|
*/
|
|
if (uio->uio_rw == UIO_WRITE && cnt != len) {
|
|
cp += cnt;
|
|
len -= cnt;
|
|
cnt = 0;
|
|
goto again;
|
|
}
|
|
}
|
|
s = splsoftclock();
|
|
if (sc->sc_flags & PPIF_TIMO) {
|
|
untimeout(ppitimo, sc);
|
|
sc->sc_flags &= ~PPIF_TIMO;
|
|
}
|
|
if (sc->sc_flags & PPIF_DELAY) {
|
|
untimeout(ppistart, sc);
|
|
sc->sc_flags &= ~PPIF_DELAY;
|
|
}
|
|
splx(s);
|
|
/*
|
|
* Adjust for those chars that we uiomove'ed but never wrote
|
|
*/
|
|
if (uio->uio_rw == UIO_WRITE && cnt != len) {
|
|
uio->uio_resid += (len - cnt);
|
|
#ifdef DEBUG
|
|
if (ppidebug & PDB_IO)
|
|
printf("ppirw: short write, adjust by %d\n",
|
|
len-cnt);
|
|
#endif
|
|
}
|
|
free(buf, M_DEVBUF);
|
|
#ifdef DEBUG
|
|
if (ppidebug & (PDB_FOLLOW|PDB_IO))
|
|
printf("ppirw: return %d, resid %d\n", error, uio->uio_resid);
|
|
#endif
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
ppiioctl(dev, cmd, data, flag, p)
|
|
dev_t dev;
|
|
u_long cmd;
|
|
caddr_t data;
|
|
int flag;
|
|
struct proc *p;
|
|
{
|
|
struct ppi_softc *sc = ppi_cd.cd_devs[UNIT(dev)];
|
|
struct ppiparam *pp, *upp;
|
|
int error = 0;
|
|
|
|
switch (cmd) {
|
|
case PPIIOCGPARAM:
|
|
pp = &sc->sc_param;
|
|
upp = (struct ppiparam *)data;
|
|
upp->burst = pp->burst;
|
|
upp->timo = ppihztoms(pp->timo);
|
|
upp->delay = ppihztoms(pp->delay);
|
|
break;
|
|
case PPIIOCSPARAM:
|
|
pp = &sc->sc_param;
|
|
upp = (struct ppiparam *)data;
|
|
if (upp->burst < PPI_BURST_MIN || upp->burst > PPI_BURST_MAX ||
|
|
upp->delay < PPI_DELAY_MIN || upp->delay > PPI_DELAY_MAX)
|
|
return(EINVAL);
|
|
pp->burst = upp->burst;
|
|
pp->timo = ppimstohz(upp->timo);
|
|
pp->delay = ppimstohz(upp->delay);
|
|
break;
|
|
case PPIIOCSSEC:
|
|
sc->sc_sec = *(int *)data;
|
|
break;
|
|
default:
|
|
return(EINVAL);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
ppihztoms(h)
|
|
int h;
|
|
{
|
|
extern int hz;
|
|
int m = h;
|
|
|
|
if (m > 0)
|
|
m = m * 1000 / hz;
|
|
return(m);
|
|
}
|
|
|
|
int
|
|
ppimstohz(m)
|
|
int m;
|
|
{
|
|
extern int hz;
|
|
int h = m;
|
|
|
|
if (h > 0) {
|
|
h = h * hz / 1000;
|
|
if (h == 0)
|
|
h = 1000 / hz;
|
|
}
|
|
return(h);
|
|
}
|