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com_mainbus.c revision 1.8.58.2 
      1 /*	$NetBSD: com_mainbus.c,v 1.8.58.2 2008/06/02 13:21:44 mjf Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include "opt_algor_p4032.h"
     33 
     34 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     35 
     36 __KERNEL_RCSID(0, "$NetBSD: com_mainbus.c,v 1.8.58.2 2008/06/02 13:21:44 mjf Exp $");
     37 
     38 #include <sys/param.h>
     39 #include <sys/systm.h>
     40 #include <sys/ioctl.h>
     41 #include <sys/select.h>
     42 #include <sys/tty.h>
     43 #include <sys/proc.h>
     44 #include <sys/user.h>
     45 #include <sys/conf.h>
     46 #include <sys/file.h>
     47 #include <sys/uio.h>
     48 #include <sys/kernel.h>
     49 #include <sys/syslog.h>
     50 #include <sys/types.h>
     51 #include <sys/device.h>
     52 
     53 #include <machine/autoconf.h>
     54 #include <machine/intr.h>
     55 #include <machine/bus.h>
     56 
     57 #include <dev/ic/comreg.h>
     58 #include <dev/ic/comvar.h>
     59 
     60 struct com_mainbus_softc {
     61 	struct	com_softc sc_com;	/* real "com" softc */
     62 
     63 	/* mainbus-specific goo. */
     64 	void	*sc_ih;			/* interrupt handler */
     65 };
     66 
     67 int	com_mainbus_match(device_t, cfdata_t , void *);
     68 void	com_mainbus_attach(device_t, device_t, void *);
     69 void	com_mainbus_cleanup(void *);
     70 
     71 CFATTACH_DECL_NEW(com_mainbus, sizeof(struct com_mainbus_softc),
     72     com_mainbus_match, com_mainbus_attach, NULL, NULL);
     73 
     74 int
     75 com_mainbus_match(device_t parent, cfdata_t match, void *aux)
     76 {
     77 	struct mainbus_attach_args *ma = aux;
     78 
     79 	/* Always present. */
     80 	if (strcmp(ma->ma_name, match->cf_name) == 0)
     81 		return (1);
     82 
     83 	return (0);
     84 }
     85 
     86 void
     87 com_mainbus_attach(device_t parent, device_t self, void *aux)
     88 {
     89 	struct com_mainbus_softc *msc = device_private(self);
     90 	struct com_softc *sc = &msc->sc_com;
     91 	struct mainbus_attach_args *ma = aux;
     92 	bus_space_handle_t ioh;
     93 
     94 	sc->sc_dev = self;
     95 	if (com_is_console(ma->ma_st, ma->ma_addr, &ioh) == 0 &&
     96 	    bus_space_map(ma->ma_st, ma->ma_addr, COM_NPORTS, 0, &ioh) != 0) {
     97 		aprint_error(": can't map i/o space\n");
     98 		return;
     99 	}
    100 	COM_INIT_REGS(sc->sc_regs, ma->ma_st, ioh, ma->ma_addr);
    101 	sc->sc_frequency = COM_FREQ;
    102 
    103 	com_attach_subr(sc);
    104 
    105 	msc->sc_ih = (*algor_intr_establish)(ma->ma_irq, comintr, sc);
    106 	if (msc->sc_ih == NULL) {
    107 		aprint_error_dev(self, "unable to establish interrupt\n");
    108 		return;
    109 	}
    110 
    111 	if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup)) {
    112 		aprint_error_dev(self, "could not establish shutdown hook");
    113 	}
    114 
    115 }
    116