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[src/trunk]: src/sys/dev/qbus Moved from ../dec/qbus/dl.c,v
details: https://anonhg.NetBSD.org/src/rev/284ed4960d7a
branches: trunk
changeset: 473274:284ed4960d7a
user: ragge <ragge%NetBSD.org@localhost>
date: Thu May 27 16:00:45 1999 +0000
description:
Moved from ../dec/qbus/dl.c,v
diffstat:
sys/dev/qbus/dl.c | 523 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 523 insertions(+), 0 deletions(-)
diffs (truncated from 527 to 300 lines):
diff -r aa15695ef866 -r 284ed4960d7a sys/dev/qbus/dl.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/qbus/dl.c Thu May 27 16:00:45 1999 +0000
@@ -0,0 +1,523 @@
+/* $NetBSD: dl.c,v 1.9 1999/05/27 16:00:45 ragge 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) 1997 Ben Harris. All rights reserved.
+ * Copyright (c) 1996 Ken C. Wellsch. All rights reserved.
+ * Copyright (c) 1982, 1986, 1990, 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Ralph Campbell and Rick Macklem.
+ *
+ * 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.
+ */
+
+/*
+ * dl.c -- Device driver for the DL11 and DLV11 serial cards.
+ *
+ * OS-interface code derived from the dz and dca (hp300) drivers.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/ioctl.h>
+#include <sys/tty.h>
+#include <sys/proc.h>
+#include <sys/map.h>
+#include <sys/buf.h>
+#include <sys/conf.h>
+#include <sys/file.h>
+#include <sys/uio.h>
+#include <sys/kernel.h>
+#include <sys/syslog.h>
+#include <sys/device.h>
+
+#include <machine/bus.h>
+#include <machine/scb.h>
+
+#include <dev/dec/qbus/ubareg.h>
+#include <dev/dec/qbus/ubavar.h>
+
+#include <dev/dec/qbus/dlreg.h>
+
+#include "ioconf.h"
+
+struct dl_softc {
+ struct device sc_dev;
+ bus_space_tag_t sc_iot;
+ bus_space_handle_t sc_ioh;
+ struct tty *sc_tty;
+};
+
+static int dl_match __P((struct device *, struct cfdata *, void *));
+static void dl_attach __P((struct device *, struct device *, void *));
+static void dlrint __P((int));
+static void dlxint __P((int));
+static void dlstart __P((struct tty *));
+static int dlparam __P((struct tty *, struct termios *));
+static void dlbrk __P((struct dl_softc *, int));
+struct tty * dltty __P((dev_t));
+ int dlopen __P((dev_t, int, int, struct proc *));
+ int dlclose __P((dev_t, int, int, struct proc *));
+ int dlread __P((dev_t, struct uio *, int));
+ int dlwrite __P((dev_t, struct uio *, int));
+ int dlioctl __P((dev_t, int, caddr_t, int, struct proc *));
+ void dlstop __P((struct tty *, int));
+
+struct cfattach dl_ca = {
+ sizeof(struct dl_softc), dl_match, dl_attach
+};
+
+#define DL_READ_WORD(reg) \
+ bus_space_read_2(sc->sc_iot, sc->sc_ioh, reg)
+#define DL_WRITE_WORD(reg, val) \
+ bus_space_write_2(sc->sc_iot, sc->sc_ioh, reg, val)
+#define DL_WRITE_BYTE(reg, val) \
+ bus_space_write_1(sc->sc_iot, sc->sc_ioh, reg, val)
+
+/* Autoconfig handles: setup the controller to interrupt, */
+/* then complete the housecleaning for full operation */
+
+static int
+dl_match (parent, cf, aux)
+ struct device * parent;
+ struct cfdata *cf;
+ void *aux;
+{
+ struct uba_attach_args *ua = aux;
+
+#ifdef DL_DEBUG
+ printf("Probing for dl at %lo ... ", (long)ua->ua_iaddr);
+#endif
+
+ bus_space_write_2(ua->ua_iot, ua->ua_ioh, DL_UBA_XCSR, DL_XCSR_TXIE);
+ if (bus_space_read_2(ua->ua_iot, ua->ua_ioh, DL_UBA_XCSR) !=
+ (DL_XCSR_TXIE | DL_XCSR_TX_READY)) {
+#ifdef DL_DEBUG
+ printf("failed (step 1; XCSR = %.4b)\n",
+ bus_space_read_2(ua->ua_iot, ua->ua_ioh, DL_UBA_XCSR),
+ DL_XCSR_BITS);
+#endif
+ return 0;
+ }
+
+ /*
+ * We have to force an interrupt so the uba driver can work
+ * out where we are. Unfortunately, the only way to make a
+ * DL11 interrupt is to get it to send or receive a
+ * character. We'll send a NUL and hope it doesn't hurt
+ * anything.
+ */
+
+ bus_space_write_1(ua->ua_iot, ua->ua_ioh, DL_UBA_XBUFL, '\0');
+#if 0 /* This test seems to fail 2/3 of the time :-( */
+ if (dladdr->dl_xcsr != (DL_XCSR_TXIE)) {
+#ifdef DL_DEBUG
+ printf("failed (step 2; XCSR = %.4b)\n", dladdr->dl_xcsr,
+ DL_XCSR_BITS);
+#endif
+ return 0;
+ }
+#endif
+ DELAY(100000); /* delay 1/10 s for character to transmit */
+ if (bus_space_read_2(ua->ua_iot, ua->ua_ioh, DL_UBA_XCSR) !=
+ (DL_XCSR_TXIE | DL_XCSR_TX_READY)) {
+#ifdef DL_DEBUG
+ printf("failed (step 3; XCSR = %.4b)\n",
+ bus_space_read_2(ua->ua_iot, ua->ua_ioh, DL_UBA_XCSR),
+ DL_XCSR_BITS);
+#endif
+ return 0;
+ }
+
+ /* Register the TX interrupt handler */
+ ua->ua_ivec = dlxint;
+
+ /* What else do I need to do? */
+
+ return 1;
+
+}
+
+static void
+dl_attach (parent, self, aux)
+ struct device *parent, *self;
+ void *aux;
+{
+ struct dl_softc *sc = (void *)self;
+ register struct uba_attach_args *ua = aux;
+
+ sc->sc_iot = ua->ua_iot;
+ sc->sc_ioh = ua->ua_ioh;
+
+ /* Tidy up the device */
+
+ DL_WRITE_WORD(DL_UBA_RCSR, DL_RCSR_RXIE);
+ DL_WRITE_WORD(DL_UBA_XCSR, DL_XCSR_TXIE);
+
+ /* Initialize our softc structure. Should be done in open? */
+
+ sc->sc_tty = ttymalloc();
+ tty_attach(sc->sc_tty);
+
+ /* Now register the RX interrupt handler */
+ scb_vecalloc(ua->ua_cvec - 4, dlrint, self->dv_unit, SCB_ISTACK);
+
+ printf("\n");
+}
+
+/* Receiver Interrupt Handler */
+
+static void
+dlrint(cntlr)
+ int cntlr;
+{
+ struct dl_softc *sc = dl_cd.cd_devs[cntlr];
+ register struct tty *tp;
+ register int cc;
+ register unsigned c;
+
+ if (DL_READ_WORD(DL_UBA_RCSR) & DL_RCSR_RX_DONE) {
+ c = DL_READ_WORD(DL_UBA_RBUF);
+ cc = c & 0xFF;
+ tp = sc->sc_tty;
+
+ if (!(tp->t_state & TS_ISOPEN)) {
+ wakeup((caddr_t)&tp->t_rawq);
+ return;
+ }
+
+ if (c & DL_RBUF_OVERRUN_ERR)
+ /*
+ * XXX: This should really be logged somwhere
+ * else where we can afford the time.
+ */
+ log(LOG_WARNING, "%s: rx overrun\n",
+ sc->sc_dev.dv_xname);
+ if (c & DL_RBUF_FRAMING_ERR)
+ cc |= TTY_FE;
+ if (c & DL_RBUF_PARITY_ERR)
+ cc |= TTY_PE;
+
+ (*linesw[tp->t_line].l_rint)(cc, tp);
+ } else
+ log(LOG_WARNING, "%s: stray rx interrupt\n",
+ sc->sc_dev.dv_xname);
+ return;
+}
+
+/* Transmitter Interrupt Handler */
+
+static void
+dlxint(cntlr)
+ int cntlr;
+{
+ struct dl_softc *sc = dl_cd.cd_devs[cntlr];
+ register struct tty *tp;
+
+ tp = sc->sc_tty;
+ tp->t_state &= ~(TS_BUSY | TS_FLUSH);
+ if (tp->t_line)
+ (*linesw[tp->t_line].l_start)(tp);
+ else
+ dlstart(tp);
+
+ return;
+}
+
+int
+dlopen(dev, flag, mode, p)
+ dev_t dev;
+ int flag, mode;
+ struct proc *p;
+{
+ register struct tty *tp;
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