Driver for Archimedes parallel ports. I haven't got a parallel printer, so
this is currently untested.
This commit is contained in:
bjh21
parent
deaad9bd51
commit
856547f067
@ -1,4 +1,4 @@
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/* $NetBSD: conf.c,v 1.4 2001/03/21 22:25:53 lukem Exp $ */
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/* $NetBSD: conf.c,v 1.5 2001/04/22 15:01:25 bjh21 Exp $ */
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/*-
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* Copyright (c) 1998, 2000 Ben Harris
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* All rights reserved.
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@ -32,7 +32,7 @@
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#include <sys/param.h>
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__RCSID("$NetBSD: conf.c,v 1.4 2001/03/21 22:25:53 lukem Exp $");
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__RCSID("$NetBSD: conf.c,v 1.5 2001/04/22 15:01:25 bjh21 Exp $");
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#include <sys/systm.h>
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#include <sys/buf.h>
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@ -73,6 +73,8 @@ cdev_decl(wsmux);
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cdev_decl(com);
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#include "lpt.h"
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cdev_decl(lpt);
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#include "arcpp.h"
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cdev_decl(arcpp);
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cons_decl(rs);
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@ -114,6 +116,7 @@ struct cdevsw cdevsw[] = {
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cdev_bpftun_init(NTUN,tun), /* 19: network tunnel */
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cdev_tty_init(NCOM, com), /* 20: ns8250 etc serial */
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cdev_lpt_init(NLPT, lpt), /* 21: PC-style parallel */
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cdev_lpt_init(NARCPP, arcpp), /* 22: Arc-style parallel */
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};
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int nchrdev = sizeof(cdevsw) / sizeof(cdevsw[0]);
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335
sys/arch/arm26/ioc/arcpp.c
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335
sys/arch/arm26/ioc/arcpp.c
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@ -0,0 +1,335 @@
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/* $NetBSD: arcpp.c,v 1.1 2001/04/22 15:01:25 bjh21 Exp $ */
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/*-
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* Copyright (c) 2001 Ben Harris
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* Copyright (c) 1993, 1994 Charles M. Hannum.
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* Copyright (c) 1990 William F. Jolitz, TeleMuse
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This software is a component of "386BSD" developed by
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* William F. Jolitz, TeleMuse.
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* 4. Neither the name of the developer nor the name "386BSD"
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS A COMPONENT OF 386BSD DEVELOPED BY WILLIAM F. JOLITZ
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* AND IS INTENDED FOR RESEARCH AND EDUCATIONAL PURPOSES ONLY. THIS
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* SOFTWARE SHOULD NOT BE CONSIDERED TO BE A COMMERCIAL PRODUCT.
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* THE DEVELOPER URGES THAT USERS WHO REQUIRE A COMMERCIAL PRODUCT
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* NOT MAKE USE OF THIS WORK.
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*
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* FOR USERS WHO WISH TO UNDERSTAND THE 386BSD SYSTEM DEVELOPED
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* BY WILLIAM F. JOLITZ, WE RECOMMEND THE USER STUDY WRITTEN
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* REFERENCES SUCH AS THE "PORTING UNIX TO THE 386" SERIES
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* (BEGINNING JANUARY 1991 "DR. DOBBS JOURNAL", USA AND BEGINNING
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* JUNE 1991 "UNIX MAGAZIN", GERMANY) BY WILLIAM F. JOLITZ AND
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* LYNNE GREER JOLITZ, AS WELL AS OTHER BOOKS ON UNIX AND THE
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* ON-LINE 386BSD USER MANUAL BEFORE USE. A BOOK DISCUSSING THE INTERNALS
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* OF 386BSD ENTITLED "386BSD FROM THE INSIDE OUT" WILL BE AVAILABLE LATE 1992.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPER ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE DEVELOPER BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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__KERNEL_RCSID(0, "$NetBSD: arcpp.c,v 1.1 2001/04/22 15:01:25 bjh21 Exp $");
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <machine/irq.h>
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#include <arch/arm26/iobus/iocvar.h>
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#include <arch/arm26/ioc/arcppreg.h>
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#include <arch/arm26/ioc/latchreg.h>
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#include <arch/arm26/ioc/latchvar.h>
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#include <arch/arm26/ioc/ioebvar.h>
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#include "ioeb.h"
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struct arcpp_softc {
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struct device sc_dev;
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void *sc_aih; /* ACK interrupt handler */
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struct evcnt sc_aintrcnt; /* ... and count */
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void *sc_bih; /* BUSY interrupt handler */
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struct evcnt sc_bintrcnt; /* ... and count */
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size_t sc_count;
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void *sc_inbuf;
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u_char *sc_cp;
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int sc_spinmax;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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u_char sc_state;
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#define ARCPP_OPEN 0x01 /* device is open */
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#define ARCPP_OBUSY 0x02 /* printer is busy doing output */
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#define ARCPP_INIT 0x04 /* waiting to initialize for open */
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u_char sc_flags;
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/*#define ARCPP_AUTOLF 0x20 * automatic LF on CR */
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/*#define ARCPP_NOPRIME 0x40 * don't prime on open */
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/*#define ARCPP_NOINTR 0x80 * do not use interrupt */
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u_char sc_laststatus;
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};
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#define TIMEOUT (hz*16) /* wait up to 16 seconds for a ready */
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#define STEP (hz/4)
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#define ARCPPPRI (PZERO+8)
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#define ARCPP_BSIZE 1024
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cdev_decl(arcpp);
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extern struct cfdriver arcpp_cd;
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#define ARCPPUNIT(s) (minor(s) & 0x1f)
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#define ARCPPFLAGS(s) (minor(s) & 0xe0)
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static int arcpp_match(struct device *, struct cfdata *, void *);
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static void arcpp_attach(struct device *, struct device *, void *);
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static int arcppintr(void *);
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static void arcppwakeup(void *);
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static int arcpppushbytes(struct arcpp_softc *);
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struct cfattach arcpp_ca = {
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sizeof(struct arcpp_softc), arcpp_match, arcpp_attach
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};
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static int
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arcpp_match(struct device *parent, struct cfdata *cf, void *aux)
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{
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/*
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* The parallel port is write-only, so we can't probe for it.
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* Happily, the set of machines it exists on is precisely the
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* set that doesn't have IOEBs, so...
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*/
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#if NIOEB > 0
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if (the_ioeb != NULL)
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return 0;
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#endif
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return 1;
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}
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static void
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arcpp_attach(struct device *parent, struct device *self, void *aux)
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{
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struct arcpp_softc *sc = (void *)self;
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struct ioc_attach_args *ioc = aux;
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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iot = sc->sc_iot = ioc->ioc_fast_t;
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ioh = sc->sc_ioh = ioc->ioc_fast_h;
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evcnt_attach_dynamic(&sc->sc_aintrcnt, EVCNT_TYPE_INTR, NULL,
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self->dv_xname, "ack intr");
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evcnt_attach_dynamic(&sc->sc_bintrcnt, EVCNT_TYPE_INTR, NULL,
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self->dv_xname, "busy intr");
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sc->sc_aih = irq_establish(IRQ_PACK, IPL_LPT, arcppintr, sc,
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&sc->sc_aintrcnt);
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sc->sc_bih = irq_establish(IRQ_PBSY, IPL_LPT, arcppintr, sc,
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&sc->sc_bintrcnt);
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/* We're not interested in interrupts while the device is closed. */
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irq_disable(sc->sc_aih);
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irq_disable(sc->sc_bih);
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printf("\n");
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}
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/*
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* Wait until the printer's selected and not busy.
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*/
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int
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arcppopen(dev_t dev, int flag, int mode, struct proc *p)
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{
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u_char flags = ARCPPFLAGS(dev);
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struct arcpp_softc *sc;
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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int error;
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sc = device_lookup(&arcpp_cd, ARCPPUNIT(dev));
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if (sc == NULL)
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return ENXIO;
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#ifdef DIAGNOSTIC
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if (sc->sc_state)
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printf("%s: stat=0x%x not zero\n", sc->sc_dev.dv_xname,
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sc->sc_state);
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#endif
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if (sc->sc_state)
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return EBUSY;
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sc->sc_state = ARCPP_INIT;
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sc->sc_flags = flags;
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iot = sc->sc_iot;
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ioh = sc->sc_ioh;
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/* wait till ready (printer running diagnostics) */
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irq_enable(sc->sc_bih);
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/* XXX Is it really appropriate to time out? */
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error = tsleep((caddr_t)sc, ARCPPPRI | PCATCH, "arcppopen", TIMEOUT);
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if (error == EWOULDBLOCK) {
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sc->sc_state = 0;
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return EBUSY;
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}
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if (error) {
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sc->sc_state = 0;
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return error;
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}
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sc->sc_inbuf = malloc(ARCPP_BSIZE, M_DEVBUF, M_WAITOK);
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sc->sc_count = 0;
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sc->sc_state = ARCPP_OPEN;
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arcppwakeup(sc);
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return 0;
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}
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static void
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arcppwakeup(void *arg)
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{
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struct arcpp_softc *sc = arg;
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int s;
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s = spllpt();
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arcppintr(sc);
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splx(s);
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}
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/*
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* Close the device, and free the local line buffer.
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*/
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int
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arcppclose(dev_t dev, int flag, int mode, struct proc *p)
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{
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struct arcpp_softc *sc = device_lookup(&arcpp_cd, ARCPPUNIT(dev));
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if (sc->sc_count)
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(void) arcpppushbytes(sc);
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irq_disable(sc->sc_aih);
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irq_disable(sc->sc_bih);
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sc->sc_state = 0;
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free(sc->sc_inbuf, M_DEVBUF);
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return 0;
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}
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static int
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arcpppushbytes(sc)
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struct arcpp_softc *sc;
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{
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int error;
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int s;
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while (sc->sc_count > 0) {
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/* if the printer is ready for a char, give it one */
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if ((sc->sc_state & ARCPP_OBUSY) == 0) {
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s = spllpt();
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arcppintr(sc);
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splx(s);
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}
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error = tsleep((caddr_t)sc, ARCPPPRI | PCATCH, "arcppwr", 0);
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if (error)
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return error;
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}
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return 0;
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}
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int
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arcppwrite(dev_t dev, struct uio *uio, int flags)
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{
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struct arcpp_softc *sc = device_lookup(&arcpp_cd, ARCPPUNIT(dev));
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size_t n;
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int error = 0;
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while ((n = min(ARCPP_BSIZE, uio->uio_resid)) != 0) {
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uiomove(sc->sc_cp = sc->sc_inbuf, n, uio);
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sc->sc_count = n;
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error = arcpppushbytes(sc);
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if (error) {
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/*
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* Return accurate residual if interrupted or timed
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* out.
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*/
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uio->uio_resid += sc->sc_count;
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sc->sc_count = 0;
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return error;
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}
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}
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return 0;
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}
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/*
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* Handle printer interrupts which occur when the printer is ready to accept
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* another char.
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*/
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int
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arcppintr(void *arg)
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{
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struct arcpp_softc *sc = arg;
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bus_space_tag_t iot = sc->sc_iot;
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bus_space_handle_t ioh = sc->sc_ioh;
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/* is printer online and ready for output */
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if (!ioc_irq_status(IRQ_PBSY)) {
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return 0;
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}
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if (sc->sc_count) {
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/* send char */
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bus_space_write_1(iot, ioh, ARCPP_DATA, *sc->sc_cp++);
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DELAY(1);
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latchb_update(LATCHB_NPSTB, 0);
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DELAY(1);
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sc->sc_count--;
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latchb_update(LATCHB_NPSTB, LATCHB_NPSTB);
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DELAY(1);
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sc->sc_state |= ARCPP_OBUSY;
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} else
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sc->sc_state &= ~ARCPP_OBUSY;
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if (sc->sc_count == 0)
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/* none, wake up the top half to get more */
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wakeup((caddr_t)sc);
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return 1;
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}
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int
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arcppioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
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{
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return ENODEV;
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}
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10
sys/arch/arm26/ioc/arcppreg.h
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10
sys/arch/arm26/ioc/arcppreg.h
Normal file
@ -0,0 +1,10 @@
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/* $NetBSD: arcppreg.h,v 1.1 2001/04/22 15:01:25 bjh21 Exp $ */
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/*
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* This file is in the public domain.
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*/
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/* Archimedes parallel port registers */
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/* Offset of data latch from IOC bank base (bus_size_t units) */
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#define ARCPP_DATA 0x04
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