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com_opb.c revision 1.11 
      1 /* $NetBSD: com_opb.c,v 1.11 2003/07/15 02:54:44 lukem Exp $ */
      2 
      3 /*
      4  * Copyright 2001 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *      This product includes software developed for the NetBSD Project by
     20  *      Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #include <sys/cdefs.h>
     39 __KERNEL_RCSID(0, "$NetBSD: com_opb.c,v 1.11 2003/07/15 02:54:44 lukem Exp $");
     40 
     41 #include <sys/param.h>
     42 #include <sys/device.h>
     43 #include <sys/tty.h>
     44 #include <sys/systm.h>
     45 
     46 #include <lib/libkern/libkern.h>
     47 
     48 #include <machine/cpu.h>
     49 
     50 #include <powerpc/ibm4xx/dev/opbvar.h>
     51 
     52 #include <dev/ic/comreg.h>
     53 #include <dev/ic/comvar.h>
     54 
     55 struct com_opb_softc {
     56 	struct com_softc sc_com;
     57 	void *sc_ih;
     58 };
     59 
     60 static int	com_opb_probe(struct device *, struct cfdata *, void *);
     61 static void	com_opb_attach(struct device *, struct device *, void *);
     62 
     63 CFATTACH_DECL(com_opb, sizeof(struct com_opb_softc),
     64     com_opb_probe, com_opb_attach, NULL, NULL);
     65 
     66 int
     67 com_opb_probe(struct device *parent, struct cfdata *cf, void *aux)
     68 {
     69 	struct opb_attach_args *oaa = aux;
     70 
     71 	/* match only com devices */
     72 	if (strcmp(oaa->opb_name, cf->cf_name) != 0)
     73 		return 0;
     74 
     75 	return (1);
     76 }
     77 
     78 void
     79 com_opb_attach(struct device *parent, struct device *self, void *aux)
     80 {
     81 	struct com_opb_softc *msc = (void *)self;
     82 	struct com_softc *sc = &msc->sc_com;
     83 	struct opb_attach_args *oaa = aux;
     84 
     85 	sc->sc_iot = oaa->opb_bt;
     86 	sc->sc_iobase = oaa->opb_addr;
     87 
     88 	/* XXX console check */
     89 
     90 	bus_space_map(sc->sc_iot, oaa->opb_addr, COM_NPORTS, 0,
     91 	    &sc->sc_ioh);
     92 
     93 	if (prop_get(dev_propdb, &sc->sc_dev, "frequency",
     94 		     &sc->sc_frequency, sizeof(sc->sc_frequency), NULL) == -1) {
     95 		printf(": unable to get frequency property\n");
     96 		return;
     97 	}
     98 
     99 	com_attach_subr(sc);
    100 
    101 	intr_establish(oaa->opb_irq, IST_LEVEL, IPL_SERIAL, comintr, sc);
    102 }
    103