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[src/trunk]: src/sys/arch/arc/dev Moved from /cvsroot/syssrc/sys/arch/pica/de...
details: https://anonhg.NetBSD.org/src/rev/666f353b935b
branches: trunk
changeset: 481082:666f353b935b
user: soda <soda%NetBSD.org@localhost>
date: Sun Jan 23 20:08:57 2000 +0000
description:
Moved from /cvsroot/syssrc/sys/arch/pica/dev/com.c,v
diffstat:
sys/arch/arc/dev/com_lbus.c | 1037 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 1037 insertions(+), 0 deletions(-)
diffs (truncated from 1041 to 300 lines):
diff -r e9c019fd85c1 -r 666f353b935b sys/arch/arc/dev/com_lbus.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arc/dev/com_lbus.c Sun Jan 23 20:08:57 2000 +0000
@@ -0,0 +1,1037 @@
+/* $NetBSD: com_lbus.c,v 1.8 2000/01/23 20:08:57 soda Exp $ */
+
+/*-
+ * Copyright (c) 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Charles M. Hannum.
+ *
+ * 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) 1991 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.
+ *
+ * @(#)com.c 7.5 (Berkeley) 5/16/91
+ */
+
+/*
+ * COM driver, based on HP dca driver
+ * uses National Semiconductor NS16450/NS16550AF UART
+ */
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/ioctl.h>
+#include <sys/select.h>
+#include <sys/tty.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/conf.h>
+#include <sys/file.h>
+#include <sys/uio.h>
+#include <sys/kernel.h>
+#include <sys/syslog.h>
+#include <sys/types.h>
+#include <sys/device.h>
+
+#include <machine/cpu.h>
+#include <machine/autoconf.h>
+#include <machine/pio.h>
+#include <pica/pica/pica.h>
+
+#include <dev/isa/comreg.h>
+#include <dev/ic/ns16550reg.h>
+
+#define COM_IBUFSIZE (2 * 256)
+#define COM_IHIGHWATER ((3 * COM_IBUFSIZE) / 4)
+
+struct com_softc {
+ struct device sc_dev;
+ struct tty *sc_tty;
+
+ int sc_overflows;
+ int sc_floods;
+ int sc_errors;
+
+ long sc_iobase;
+ u_char sc_hwflags;
+#define COM_HW_NOIEN 0x01
+#define COM_HW_FIFO 0x02
+#define COM_HW_CONSOLE 0x40
+ u_char sc_swflags;
+#define COM_SW_SOFTCAR 0x01
+#define COM_SW_CLOCAL 0x02
+#define COM_SW_CRTSCTS 0x04
+#define COM_SW_MDMBUF 0x08
+ u_char sc_msr, sc_mcr;
+ u_char sc_dtr;
+
+ u_char *sc_ibuf, *sc_ibufp, *sc_ibufhigh, *sc_ibufend;
+ u_char sc_ibufs[2][COM_IBUFSIZE];
+};
+
+int commatch __P((struct device *, void *, void *));
+void comattach __P((struct device *, struct device *, void *));
+int comopen __P((dev_t, int, int, struct proc *));
+int comclose __P((dev_t, int, int, struct proc *));
+void comdiag __P((void *));
+int comintr __P((void *));
+void compoll __P((void *));
+int comparam __P((struct tty *, struct termios *));
+void comstart __P((struct tty *));
+
+struct cfattach pcom_ca = {
+ sizeof(struct com_softc), commatch, comattach
+};
+
+extern struct cfdriver pcom_cd;
+
+int comdefaultrate = TTYDEF_SPEED;
+#ifdef COMCONSOLE
+int comconsole = COMCONSOLE;
+#else
+int comconsole = -1;
+#endif
+int comconsinit;
+int commajor;
+int comsopen = 0;
+int comevents = 0;
+
+#ifdef KGDB
+#include <machine/remote-sl.h>
+extern int kgdb_dev;
+extern int kgdb_rate;
+extern int kgdb_debug_init;
+#endif
+
+#define COMUNIT(x) (minor(x))
+
+#define bis(c, b) do { const register int com_ad = (c); \
+ outb(com_ad, inb(com_ad) | (b)); } while(0)
+#define bic(c, b) do { const register int com_ad = (c); \
+ outb(com_ad, inb(com_ad) & ~(b)); } while(0)
+
+int
+comspeed(speed)
+ long speed;
+{
+#define divrnd(n, q) (((n)*2/(q)+1)/2) /* divide and round off */
+
+ int x, err;
+
+ if (speed == 0)
+ return 0;
+ if (speed < 0)
+ return -1;
+ x = divrnd((COM_FREQ / 16), speed);
+ if (x <= 0)
+ return -1;
+ err = divrnd((COM_FREQ / 16) * 1000, speed * x) - 1000;
+ if (err < 0)
+ err = -err;
+ if (err > COM_TOLERANCE)
+ return -1;
+ return x;
+
+#undef divrnd(n, q)
+}
+
+int
+commatch1(iobase)
+ long iobase;
+{
+
+ /* force access to id reg */
+ outb(iobase + com_cfcr, 0);
+ outb(iobase + com_iir, 0);
+ if (inb(iobase + com_iir) & 0x38)
+ return 0;
+
+ return 1;
+}
+
+int
+commatch(parent, cfdata, aux)
+ struct device *parent;
+ void *cfdata, *aux;
+{
+ struct confargs *ca = aux;
+ long iobase;
+
+ /* Make shure that we're looking for this type of device. */
+ if(!BUS_MATCHNAME(ca, "com"))
+ return(0);
+
+ iobase = (long)BUS_CVTADDR(ca);
+ if (!commatch1(iobase))
+ return (0);
+
+ return (1);
+}
+
+void
+comattach(parent, self, aux)
+ struct device *parent, *self;
+ void *aux;
+{
+ struct com_softc *sc = (void *)self;
+ struct confargs *ca = aux;
+ struct cfdata *cf = sc->sc_dev.dv_cfdata;
+ long iobase;
+ struct tty *tp;
+
+ sc->sc_iobase = iobase = (long)BUS_CVTADDR(ca);
+ sc->sc_hwflags = cf->cf_flags & COM_HW_NOIEN;
+ sc->sc_swflags = 0;
+
+ if (sc->sc_dev.dv_unit == comconsole)
+ delay(1000);
+
+ /* look for a NS 16550AF UART with FIFOs */
+ outb(iobase + com_fifo,
+ FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_14);
+ delay(100);
+ if ((inb(iobase + com_iir) & IIR_FIFO_MASK) == IIR_FIFO_MASK)
+ if ((inb(iobase + com_fifo) & FIFO_TRIGGER_14) == FIFO_TRIGGER_14) {
+ sc->sc_hwflags |= COM_HW_FIFO;
+ printf(": ns16550a, working fifo\n");
+ } else
+ printf(": ns16550, broken fifo\n");
+ else
+ printf(": ns8250 or ns16450, no fifo\n");
+ outb(iobase + com_fifo, 0);
+
+ /* disable interrupts */
+ outb(iobase + com_ier, 0);
+ outb(iobase + com_mcr, 0);
+
+ BUS_INTR_ESTABLISH(ca, comintr, (void *)(long)sc);
+
+#ifdef KGDB
+ if (kgdb_dev == makedev(commajor, unit)) {
+ if (comconsole == unit)
+ kgdb_dev = -1; /* can't debug over console port */
+ else {
+ (void) cominit(unit, kgdb_rate);
+ if (kgdb_debug_init) {
+ /*
+ * Print prefix of device name,
+ * let kgdb_connect print the rest.
+ */
+ printf("%s: ", sc->sc_dev.dv_xname);
+ kgdb_connect(1);
+ } else
+ printf("%s: kgdb enabled\n",
+ sc->sc_dev.dv_xname);
+ }
+ }
+#endif
+
+ if (sc->sc_dev.dv_unit == comconsole) {
+ /*
+ * Need to reset baud rate, etc. of next print so reset
+ * comconsinit. Also make sure console is always "hardwired".
+ */
+ comconsinit = 0;
+ sc->sc_hwflags |= COM_HW_CONSOLE;
+ sc->sc_swflags |= COM_SW_SOFTCAR;
+ }
+}
+
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