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com_elb.c revision 1.4 
      1 /*	$NetBSD: com_elb.c,v 1.4 2006/07/13 22:56:01 gdamore Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2003 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Juergen Hannken-Illjes.
      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>
     40 __KERNEL_RCSID(0, "$NetBSD: com_elb.c,v 1.4 2006/07/13 22:56:01 gdamore Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/conf.h>
     44 #include <sys/device.h>
     45 #include <sys/systm.h>
     46 #include <sys/tty.h>
     47 
     48 #include <machine/bus.h>
     49 
     50 #include <dev/ic/comreg.h>
     51 #include <dev/ic/comvar.h>
     52 
     53 #include <evbppc/explora/dev/elbvar.h>
     54 
     55 struct com_elb_softc {
     56 	struct com_softc sc_com;
     57 	void *sc_ih;
     58 };
     59 
     60 static int	com_elb_probe(struct device *, struct cfdata *, void *);
     61 static void	com_elb_attach(struct device *, struct device *, void *);
     62 
     63 CFATTACH_DECL(com_elb, sizeof(struct com_elb_softc),
     64     com_elb_probe, com_elb_attach, NULL, NULL);
     65 
     66 int
     67 com_elb_probe(struct device *parent, struct cfdata *cf, void *aux)
     68 {
     69 	struct elb_attach_args *oaa = aux;
     70 
     71 	if (strcmp(oaa->elb_name, cf->cf_name) != 0)
     72 		return 0;
     73 
     74 	return (1);
     75 }
     76 
     77 void
     78 com_elb_attach(struct device *parent, struct device *self, void *aux)
     79 {
     80 	struct com_elb_softc *msc = (void *)self;
     81 	struct com_softc *sc = &msc->sc_com;
     82 	struct elb_attach_args *eaa = aux;
     83 	bus_space_handle_t ioh;
     84 
     85 	bus_space_map(eaa->elb_bt, eaa->elb_base, COM_NPORTS, 0, &ioh);
     86 	COM_INIT_REGS(sc->sc_regs, eaa->elb_bt, ioh, eaa->elb_base);
     87 
     88 	sc->sc_frequency = COM_FREQ;
     89 
     90 	com_attach_subr(sc);
     91 
     92 	intr_establish(eaa->elb_irq, IST_LEVEL, IPL_SERIAL, comintr, sc);
     93 }
     94