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com_opb.c revision 1.1 
      1 /* $NetBSD: com_opb.c,v 1.1 2002/08/12 02:06:20 simonb 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/param.h>
     39 #include <sys/device.h>
     40 #include <sys/tty.h>
     41 #include <sys/systm.h>
     42 
     43 #include <lib/libkern/libkern.h>
     44 
     45 #include <powerpc/ibm4xx/dev/opbvar.h>
     46 
     47 #include <dev/ic/comreg.h>
     48 #include <dev/ic/comvar.h>
     49 
     50 struct com_opb_softc {
     51 	struct com_softc sc_com;
     52 	void *sc_ih;
     53 };
     54 
     55 static int	com_opb_probe(struct device *, struct cfdata *, void *);
     56 static void	com_opb_attach(struct device *, struct device *, void *);
     57 
     58 struct cfattach com_opb_ca = {
     59 	sizeof(struct com_opb_softc), com_opb_probe, com_opb_attach
     60 };
     61 
     62 int comfound = 0;
     63 
     64 int
     65 com_opb_probe(struct device *parent, struct cfdata *cf, void *aux)
     66 {
     67 	struct opb_attach_args *oaa = aux;
     68 
     69 	/* match only com devices */
     70 	if (strcmp(oaa->opb_name, cf->cf_driver->cd_name) != 0)
     71 		return 0;
     72 
     73 	return (comfound < 2);
     74 }
     75 
     76 struct com_softc *com0; /* XXX */
     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 	int addr = oaa->opb_addr;
     85 	int irq = oaa->opb_irq;
     86 
     87 	sc->sc_iot = oaa->opb_bt;
     88 	sc->sc_iobase = sc->sc_ioh = addr;
     89 	/* UART is clocked externally @ 11.0592MHz == COM_FREQ*6 */
     90 	sc->sc_frequency = COM_FREQ * 6;
     91 
     92 	comfound++;
     93 
     94 	/* XXX console check */
     95 	/* XXX map */
     96 
     97 	com_attach_subr(sc);
     98 
     99 	intr_establish(irq, IST_LEVEL, IPL_SERIAL, comintr, sc);
    100 }
    101