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[src/trunk]: src/sys/arch/arm26 Driver for Archimedes parallel ports. I have...
details: https://anonhg.NetBSD.org/src/rev/0f806b051f57
branches: trunk
changeset: 508921:0f806b051f57
user: bjh21 <bjh21%NetBSD.org@localhost>
date: Sun Apr 22 15:01:25 2001 +0000
description:
Driver for Archimedes parallel ports. I haven't got a parallel printer, so
this is currently untested.
diffstat:
sys/arch/arm26/arm26/conf.c | 7 +-
sys/arch/arm26/ioc/arcpp.c | 335 ++++++++++++++++++++++++++++++++++++++++++
sys/arch/arm26/ioc/arcppreg.h | 10 +
3 files changed, 350 insertions(+), 2 deletions(-)
diffs (truncated from 388 to 300 lines):
diff -r 67e037b24856 -r 0f806b051f57 sys/arch/arm26/arm26/conf.c
--- a/sys/arch/arm26/arm26/conf.c Sun Apr 22 15:00:17 2001 +0000
+++ b/sys/arch/arm26/arm26/conf.c Sun Apr 22 15:01:25 2001 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: conf.c,v 1.4 2001/03/21 22:25:53 lukem Exp $ */
+/* $NetBSD: conf.c,v 1.5 2001/04/22 15:01:25 bjh21 Exp $ */
/*-
* Copyright (c) 1998, 2000 Ben Harris
* All rights reserved.
@@ -32,7 +32,7 @@
#include <sys/param.h>
-__RCSID("$NetBSD: conf.c,v 1.4 2001/03/21 22:25:53 lukem Exp $");
+__RCSID("$NetBSD: conf.c,v 1.5 2001/04/22 15:01:25 bjh21 Exp $");
#include <sys/systm.h>
#include <sys/buf.h>
@@ -73,6 +73,8 @@
cdev_decl(com);
#include "lpt.h"
cdev_decl(lpt);
+#include "arcpp.h"
+cdev_decl(arcpp);
cons_decl(rs);
@@ -114,6 +116,7 @@
cdev_bpftun_init(NTUN,tun), /* 19: network tunnel */
cdev_tty_init(NCOM, com), /* 20: ns8250 etc serial */
cdev_lpt_init(NLPT, lpt), /* 21: PC-style parallel */
+ cdev_lpt_init(NARCPP, arcpp), /* 22: Arc-style parallel */
};
int nchrdev = sizeof(cdevsw) / sizeof(cdevsw[0]);
diff -r 67e037b24856 -r 0f806b051f57 sys/arch/arm26/ioc/arcpp.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm26/ioc/arcpp.c Sun Apr 22 15:01:25 2001 +0000
@@ -0,0 +1,335 @@
+/* $NetBSD: arcpp.c,v 1.1 2001/04/22 15:01:25 bjh21 Exp $ */
+
+/*-
+ * Copyright (c) 2001 Ben Harris
+ * Copyright (c) 1993, 1994 Charles M. Hannum.
+ * Copyright (c) 1990 William F. Jolitz, TeleMuse
+ * 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 software is a component of "386BSD" developed by
+ * William F. Jolitz, TeleMuse.
+ * 4. Neither the name of the developer nor the name "386BSD"
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS A COMPONENT OF 386BSD DEVELOPED BY WILLIAM F. JOLITZ
+ * AND IS INTENDED FOR RESEARCH AND EDUCATIONAL PURPOSES ONLY. THIS
+ * SOFTWARE SHOULD NOT BE CONSIDERED TO BE A COMMERCIAL PRODUCT.
+ * THE DEVELOPER URGES THAT USERS WHO REQUIRE A COMMERCIAL PRODUCT
+ * NOT MAKE USE OF THIS WORK.
+ *
+ * FOR USERS WHO WISH TO UNDERSTAND THE 386BSD SYSTEM DEVELOPED
+ * BY WILLIAM F. JOLITZ, WE RECOMMEND THE USER STUDY WRITTEN
+ * REFERENCES SUCH AS THE "PORTING UNIX TO THE 386" SERIES
+ * (BEGINNING JANUARY 1991 "DR. DOBBS JOURNAL", USA AND BEGINNING
+ * JUNE 1991 "UNIX MAGAZIN", GERMANY) BY WILLIAM F. JOLITZ AND
+ * LYNNE GREER JOLITZ, AS WELL AS OTHER BOOKS ON UNIX AND THE
+ * ON-LINE 386BSD USER MANUAL BEFORE USE. A BOOK DISCUSSING THE INTERNALS
+ * OF 386BSD ENTITLED "386BSD FROM THE INSIDE OUT" WILL BE AVAILABLE LATE 1992.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER ``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 DEVELOPER 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>
+
+__KERNEL_RCSID(0, "$NetBSD: arcpp.c,v 1.1 2001/04/22 15:01:25 bjh21 Exp $");
+
+#include <sys/conf.h>
+#include <sys/device.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/proc.h>
+#include <sys/systm.h>
+
+#include <machine/bus.h>
+#include <machine/intr.h>
+#include <machine/irq.h>
+
+#include <arch/arm26/iobus/iocvar.h>
+#include <arch/arm26/ioc/arcppreg.h>
+#include <arch/arm26/ioc/latchreg.h>
+#include <arch/arm26/ioc/latchvar.h>
+#include <arch/arm26/ioc/ioebvar.h>
+
+#include "ioeb.h"
+
+struct arcpp_softc {
+ struct device sc_dev;
+ void *sc_aih; /* ACK interrupt handler */
+ struct evcnt sc_aintrcnt; /* ... and count */
+ void *sc_bih; /* BUSY interrupt handler */
+ struct evcnt sc_bintrcnt; /* ... and count */
+ size_t sc_count;
+ void *sc_inbuf;
+ u_char *sc_cp;
+ int sc_spinmax;
+ bus_space_tag_t sc_iot;
+ bus_space_handle_t sc_ioh;
+ u_char sc_state;
+#define ARCPP_OPEN 0x01 /* device is open */
+#define ARCPP_OBUSY 0x02 /* printer is busy doing output */
+#define ARCPP_INIT 0x04 /* waiting to initialize for open */
+ u_char sc_flags;
+/*#define ARCPP_AUTOLF 0x20 * automatic LF on CR */
+/*#define ARCPP_NOPRIME 0x40 * don't prime on open */
+/*#define ARCPP_NOINTR 0x80 * do not use interrupt */
+ u_char sc_laststatus;
+};
+
+#define TIMEOUT (hz*16) /* wait up to 16 seconds for a ready */
+#define STEP (hz/4)
+
+#define ARCPPPRI (PZERO+8)
+#define ARCPP_BSIZE 1024
+
+cdev_decl(arcpp);
+
+extern struct cfdriver arcpp_cd;
+
+#define ARCPPUNIT(s) (minor(s) & 0x1f)
+#define ARCPPFLAGS(s) (minor(s) & 0xe0)
+
+static int arcpp_match(struct device *, struct cfdata *, void *);
+static void arcpp_attach(struct device *, struct device *, void *);
+
+static int arcppintr(void *);
+static void arcppwakeup(void *);
+static int arcpppushbytes(struct arcpp_softc *);
+
+struct cfattach arcpp_ca = {
+ sizeof(struct arcpp_softc), arcpp_match, arcpp_attach
+};
+
+static int
+arcpp_match(struct device *parent, struct cfdata *cf, void *aux)
+{
+
+ /*
+ * The parallel port is write-only, so we can't probe for it.
+ * Happily, the set of machines it exists on is precisely the
+ * set that doesn't have IOEBs, so...
+ */
+#if NIOEB > 0
+ if (the_ioeb != NULL)
+ return 0;
+#endif
+ return 1;
+}
+
+static void
+arcpp_attach(struct device *parent, struct device *self, void *aux)
+{
+ struct arcpp_softc *sc = (void *)self;
+ struct ioc_attach_args *ioc = aux;
+ bus_space_tag_t iot;
+ bus_space_handle_t ioh;
+
+ iot = sc->sc_iot = ioc->ioc_fast_t;
+ ioh = sc->sc_ioh = ioc->ioc_fast_h;
+
+ evcnt_attach_dynamic(&sc->sc_aintrcnt, EVCNT_TYPE_INTR, NULL,
+ self->dv_xname, "ack intr");
+ evcnt_attach_dynamic(&sc->sc_bintrcnt, EVCNT_TYPE_INTR, NULL,
+ self->dv_xname, "busy intr");
+ sc->sc_aih = irq_establish(IRQ_PACK, IPL_LPT, arcppintr, sc,
+ &sc->sc_aintrcnt);
+ sc->sc_bih = irq_establish(IRQ_PBSY, IPL_LPT, arcppintr, sc,
+ &sc->sc_bintrcnt);
+
+ /* We're not interested in interrupts while the device is closed. */
+ irq_disable(sc->sc_aih);
+ irq_disable(sc->sc_bih);
+
+ printf("\n");
+}
+
+/*
+ * Wait until the printer's selected and not busy.
+ */
+int
+arcppopen(dev_t dev, int flag, int mode, struct proc *p)
+{
+ u_char flags = ARCPPFLAGS(dev);
+ struct arcpp_softc *sc;
+ bus_space_tag_t iot;
+ bus_space_handle_t ioh;
+ int error;
+
+ sc = device_lookup(&arcpp_cd, ARCPPUNIT(dev));
+ if (sc == NULL)
+ return ENXIO;
+
+#ifdef DIAGNOSTIC
+ if (sc->sc_state)
+ printf("%s: stat=0x%x not zero\n", sc->sc_dev.dv_xname,
+ sc->sc_state);
+#endif
+
+ if (sc->sc_state)
+ return EBUSY;
+
+ sc->sc_state = ARCPP_INIT;
+ sc->sc_flags = flags;
+ iot = sc->sc_iot;
+ ioh = sc->sc_ioh;
+
+ /* wait till ready (printer running diagnostics) */
+ irq_enable(sc->sc_bih);
+ /* XXX Is it really appropriate to time out? */
+ error = tsleep((caddr_t)sc, ARCPPPRI | PCATCH, "arcppopen", TIMEOUT);
+ if (error == EWOULDBLOCK) {
+ sc->sc_state = 0;
+ return EBUSY;
+ }
+ if (error) {
+ sc->sc_state = 0;
+ return error;
+ }
+
+ sc->sc_inbuf = malloc(ARCPP_BSIZE, M_DEVBUF, M_WAITOK);
+ sc->sc_count = 0;
+
+ sc->sc_state = ARCPP_OPEN;
+
+ arcppwakeup(sc);
+
+ return 0;
+}
+
+static void
+arcppwakeup(void *arg)
+{
+ struct arcpp_softc *sc = arg;
+ int s;
+
+ s = spllpt();
+ arcppintr(sc);
+ splx(s);
+}
+
+/*
+ * Close the device, and free the local line buffer.
+ */
+int
+arcppclose(dev_t dev, int flag, int mode, struct proc *p)
+{
+ struct arcpp_softc *sc = device_lookup(&arcpp_cd, ARCPPUNIT(dev));
+
+ if (sc->sc_count)
+ (void) arcpppushbytes(sc);
+
+ irq_disable(sc->sc_aih);
+ irq_disable(sc->sc_bih);
+ sc->sc_state = 0;
+ free(sc->sc_inbuf, M_DEVBUF);
+
+ return 0;
+}
+
+static int
+arcpppushbytes(sc)
+ struct arcpp_softc *sc;
+{
+ int error;
+ int s;
+
+ while (sc->sc_count > 0) {
+ /* if the printer is ready for a char, give it one */
+ if ((sc->sc_state & ARCPP_OBUSY) == 0) {
+ s = spllpt();
+ arcppintr(sc);
+ splx(s);
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