Source-Changes-HG archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
[src/trunk]: src/sys/arch/arc/dev Moved from /cvsroot/syssrc/sys/arch/pica/de...
details: https://anonhg.NetBSD.org/src/rev/0421e72aa376
branches: trunk
changeset: 481083:0421e72aa376
user: soda <soda%NetBSD.org@localhost>
date: Sun Jan 23 20:08:57 2000 +0000
description:
Moved from /cvsroot/syssrc/sys/arch/pica/dev/lpt.c,v
diffstat:
sys/arch/arc/dev/lpt_lbus.c | 484 ++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 484 insertions(+), 0 deletions(-)
diffs (truncated from 488 to 300 lines):
diff -r 666f353b935b -r 0421e72aa376 sys/arch/arc/dev/lpt_lbus.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arc/dev/lpt_lbus.c Sun Jan 23 20:08:57 2000 +0000
@@ -0,0 +1,484 @@
+/* $NetBSD: lpt_lbus.c,v 1.7 2000/01/23 20:08:58 soda Exp $ */
+
+/*
+ * 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.
+ */
+
+/*
+ * Device Driver for AT parallel printer port
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/buf.h>
+#include <sys/kernel.h>
+#include <sys/ioctl.h>
+#include <sys/uio.h>
+#include <sys/device.h>
+#include <sys/syslog.h>
+
+#include <machine/cpu.h>
+#include <machine/pio.h>
+#include <machine/autoconf.h>
+
+#include <dev/isa/lptreg.h>
+
+#define TIMEOUT hz*16 /* wait up to 16 seconds for a ready */
+#define STEP hz/4
+
+#define LPTPRI (PZERO+8)
+#define LPT_BSIZE 1024
+
+#if !defined(DEBUG) || !defined(notdef)
+#define lprintf
+#else
+#define lprintf if (lptdebug) printf
+int lptdebug = 1;
+#endif
+
+struct lpt_softc {
+ struct device sc_dev;
+ void *sc_ih;
+
+ size_t sc_count;
+ struct buf *sc_inbuf;
+ u_char *sc_cp;
+ int sc_spinmax;
+ int sc_iobase;
+ u_char sc_state;
+#define LPT_OPEN 0x01 /* device is open */
+#define LPT_OBUSY 0x02 /* printer is busy doing output */
+#define LPT_INIT 0x04 /* waiting to initialize for open */
+ u_char sc_flags;
+#define LPT_AUTOLF 0x20 /* automatic LF on CR */
+#define LPT_NOPRIME 0x40 /* don't prime on open */
+ u_char sc_control;
+ u_char sc_laststatus;
+};
+
+int lptprobe __P((struct device *, void *, void *));
+void lptattach __P((struct device *, struct device *, void *));
+int lptintr __P((void *));
+
+struct cfattach lpt_ca = {
+ sizeof(struct lpt_softc), lptprobe, lptattach
+};
+
+extern struct cfdriver lpt_cd;
+
+#define LPTUNIT(s) (minor(s) & 0x1f)
+#define LPTFLAGS(s) (minor(s) & 0xe0)
+
+#define LPS_INVERT (LPS_SELECT|LPS_NERR|LPS_NBSY|LPS_NACK)
+#define LPS_MASK (LPS_SELECT|LPS_NERR|LPS_NBSY|LPS_NACK|LPS_NOPAPER)
+#define NOT_READY() ((inb(iobase + lpt_status) ^ LPS_INVERT) & LPS_MASK)
+#define NOT_READY_ERR() not_ready(inb(iobase + lpt_status), sc)
+static int not_ready __P((u_char, struct lpt_softc *));
+
+static void lptwakeup __P((void *arg));
+static int pushbytes __P((struct lpt_softc *));
+
+/*
+ * Internal routine to lptprobe to do port tests of one byte value.
+ */
+int
+lpt_port_test(port, data, mask)
+ int port;
+ u_char data, mask;
+{
+ int timeout;
+ u_char temp;
+
+ data &= mask;
+ outb(port, data);
+ timeout = 1000;
+ do {
+ delay(20);
+ temp = inb(port) & mask;
+ } while (temp != data && --timeout);
+ lprintf("lpt: port=0x%x out=0x%x in=0x%x timeout=%d\n", port, data,
+ temp, timeout);
+ return (temp == data);
+}
+
+/*
+ * Logic:
+ * 1) You should be able to write to and read back the same value
+ * to the data port. Do an alternating zeros, alternating ones,
+ * walking zero, and walking one test to check for stuck bits.
+ *
+ * 2) You should be able to write to and read back the same value
+ * to the control port lower 5 bits, the upper 3 bits are reserved
+ * per the IBM PC technical reference manauls and different boards
+ * do different things with them. Do an alternating zeros, alternating
+ * ones, walking zero, and walking one test to check for stuck bits.
+ *
+ * Some printers drag the strobe line down when the are powered off
+ * so this bit has been masked out of the control port test.
+ *
+ * XXX Some printers may not like a fast pulse on init or strobe, I
+ * don't know at this point, if that becomes a problem these bits
+ * should be turned off in the mask byte for the control port test.
+ *
+ * 3) Set the data and control ports to a value of 0
+ */
+int
+lptprobe(parent, match, aux)
+ struct device *parent;
+ void *match, *aux;
+{
+ struct confargs *ca = aux;
+ int iobase = (int)BUS_CVTADDR(ca);
+ int port;
+ u_char mask, data;
+ int i;
+
+ if (!BUS_MATCHNAME(ca, "lpt"))
+ return (0);
+
+#ifdef DEBUG
+#define ABORT do {printf("lptprobe: mask %x data %x failed\n", mask, data); \
+ return 0;} while (0)
+#else
+#define ABORT return 0
+#endif
+
+ port = iobase + lpt_data;
+ mask = 0xff;
+
+ data = 0x55; /* Alternating zeros */
+ if (!lpt_port_test(port, data, mask))
+ ABORT;
+
+ data = 0xaa; /* Alternating ones */
+ if (!lpt_port_test(port, data, mask))
+ ABORT;
+
+ for (i = 0; i < CHAR_BIT; i++) { /* Walking zero */
+ data = ~(1 << i);
+ if (!lpt_port_test(port, data, mask))
+ ABORT;
+ }
+
+ for (i = 0; i < CHAR_BIT; i++) { /* Walking one */
+ data = (1 << i);
+ if (!lpt_port_test(port, data, mask))
+ ABORT;
+ }
+
+ outb(iobase + lpt_data, 0);
+ outb(iobase + lpt_control, 0);
+
+ return 1;
+}
+
+void
+lptattach(parent, self, aux)
+ struct device *parent, *self;
+ void *aux;
+{
+ struct lpt_softc *sc = (void *)self;
+ struct confargs *ca = aux;
+ int iobase = (int)BUS_CVTADDR(ca);
+
+ printf("\n");
+
+ sc->sc_iobase = iobase;
+ sc->sc_state = 0;
+ outb(iobase + lpt_control, LPC_NINIT);
+
+ BUS_INTR_ESTABLISH(ca, lptintr, sc);
+}
+
+/*
+ * Reset the printer, then wait until it's selected and not busy.
+ */
+int
+lptopen(dev, flag)
+ dev_t dev;
+ int flag;
+{
+ int unit = LPTUNIT(dev);
+ u_char flags = LPTFLAGS(dev);
+ struct lpt_softc *sc;
+ int iobase;
+ u_char control;
+ int error;
+ int spin;
+
+ if (unit >= lpt_cd.cd_ndevs)
+ return ENXIO;
+ sc = lpt_cd.cd_devs[unit];
+ if (!sc)
+ 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 = LPT_INIT;
+ sc->sc_flags = flags;
+ lprintf("%s: open: flags=0x%x\n", sc->sc_dev.dv_xname, flags);
+ iobase = sc->sc_iobase;
+
+ if ((flags & LPT_NOPRIME) == 0) {
+ /* assert INIT for 100 usec to start up printer */
+ outb(iobase + lpt_control, LPC_SELECT);
+ delay(100);
+ }
+
+ control = LPC_SELECT | LPC_NINIT;
+ outb(iobase + lpt_control, control);
+
+ /* wait till ready (printer running diagnostics) */
+ for (spin = 0; NOT_READY_ERR(); spin += STEP) {
+ if (spin >= TIMEOUT) {
+ sc->sc_state = 0;
+ return EBUSY;
+ }
+
+ /* wait 1/4 second, give up if we get a signal */
+ if (error = tsleep((caddr_t)sc, LPTPRI | PCATCH, "lptopen",
+ STEP) != EWOULDBLOCK) {
+ sc->sc_state = 0;
+ return error;
Home |
Main Index |
Thread Index |
Old Index