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com_jensenio.c revision 1.2 
      1 /* $NetBSD: com_jensenio.c,v 1.2 2001/07/27 00:25:19 thorpej Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     40 
     41 __KERNEL_RCSID(0, "$NetBSD: com_jensenio.c,v 1.2 2001/07/27 00:25:19 thorpej Exp $");
     42 
     43 #include <sys/param.h>
     44 #include <sys/systm.h>
     45 #include <sys/ioctl.h>
     46 #include <sys/select.h>
     47 #include <sys/tty.h>
     48 #include <sys/proc.h>
     49 #include <sys/user.h>
     50 #include <sys/conf.h>
     51 #include <sys/file.h>
     52 #include <sys/uio.h>
     53 #include <sys/kernel.h>
     54 #include <sys/syslog.h>
     55 #include <sys/types.h>
     56 #include <sys/device.h>
     57 
     58 #include <machine/intr.h>
     59 #include <machine/bus.h>
     60 
     61 #include <dev/ic/comreg.h>
     62 #include <dev/ic/comvar.h>
     63 
     64 #include <dev/eisa/eisavar.h>
     65 
     66 #include <dev/isa/isavar.h>
     67 
     68 #include <alpha/jensenio/jenseniovar.h>
     69 
     70 struct com_jensenio_softc {
     71 	struct	com_softc sc_com;	/* real "com" softc */
     72 
     73 	/* Jensen-specific goo. */
     74 	char	sc_vecstr[8];
     75 	struct evcnt sc_ev_intr;
     76 };
     77 
     78 int	com_jensenio_match(struct device *, struct cfdata *, void *);
     79 void	com_jensenio_attach(struct device *, struct device *, void *);
     80 void	com_jensenio_cleanup(void *);
     81 
     82 struct cfattach com_jensenio_ca = {
     83 	sizeof(struct com_jensenio_softc), com_jensenio_match,
     84 	    com_jensenio_attach
     85 };
     86 
     87 void	com_jensenio_intr(void *, u_long);
     88 
     89 int
     90 com_jensenio_match(struct device *parent, struct cfdata *match, void *aux)
     91 {
     92 	struct jensenio_attach_args *ja = aux;
     93 
     94 	/* Always present. */
     95 	if (strcmp(ja->ja_name, match->cf_driver->cd_name) == 0)
     96 		return (1);
     97 
     98 	return (0);
     99 }
    100 
    101 void
    102 com_jensenio_attach(struct device *parent, struct device *self, void *aux)
    103 {
    104 	struct com_jensenio_softc *jsc = (void *)self;
    105 	struct com_softc *sc = &jsc->sc_com;
    106 	struct jensenio_attach_args *ja = aux;
    107 
    108 	sc->sc_iot = ja->ja_iot;
    109 	sc->sc_iobase = ja->ja_ioaddr;
    110 
    111 	if (com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) == 0 &&
    112 	    bus_space_map(sc->sc_iot, sc->sc_iobase, COM_NPORTS, 0,
    113 			  &sc->sc_ioh) != 0) {
    114 		printf(": can't map i/o space\n");
    115 		return;
    116 	}
    117 
    118 	sc->sc_frequency = COM_FREQ;
    119 
    120 	com_attach_subr(sc);
    121 
    122 	scb_set(ja->ja_irq[0], com_jensenio_intr, sc);
    123 	printf("%s: interrupting at vector 0x%x\n",
    124 	    sc->sc_dev.dv_xname, ja->ja_irq[0]);
    125 
    126 	sprintf(jsc->sc_vecstr, "0x%x", ja->ja_irq[0]);
    127 	evcnt_attach_dynamic(&jsc->sc_ev_intr, EVCNT_TYPE_INTR,
    128 	    NULL, "vector", jsc->sc_vecstr);
    129 
    130 	/*
    131 	 * Shutdown hook for buggy BIOSs that don't recognize the UART
    132 	 * without a disabled FIFO.
    133 	 */
    134 	if (shutdownhook_establish(com_jensenio_cleanup, sc) == NULL)
    135 		panic("com_jensenio_attach: could not establish shutdown hook");
    136 }
    137 
    138 void
    139 com_jensenio_intr(void *arg, u_long vec)
    140 {
    141 	struct com_jensenio_softc *jsc = arg;
    142 
    143 	jsc->sc_ev_intr.ev_count++;
    144 	(void) comintr(&jsc->sc_com);
    145 }
    146 
    147 void
    148 com_jensenio_cleanup(void *arg)
    149 {
    150 	struct com_softc *sc = arg;
    151 
    152 	if (ISSET(sc->sc_hwflags, COM_HW_FIFO))
    153 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0);
    154 }
    155