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zs_pcc.c revision 1.3 
      1 /*	$NetBSD: zs_pcc.c,v 1.3 2002/10/02 05:06:54 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997, 1999
      5  *	Matthias Drochner.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  *
     27  */
     28 
     29 #include <sys/param.h>
     30 #include <sys/systm.h>
     31 #include <sys/proc.h>
     32 #include <sys/device.h>
     33 #include <sys/conf.h>
     34 #include <sys/file.h>
     35 #include <sys/ioctl.h>
     36 #include <sys/tty.h>
     37 #include <sys/time.h>
     38 #include <sys/kernel.h>
     39 #include <sys/syslog.h>
     40 
     41 #include <dev/cons.h>
     42 #include <dev/ic/z8530reg.h>
     43 #include <machine/z8530var.h>
     44 
     45 #include <machine/cpu.h>
     46 #include <machine/autoconf.h>
     47 
     48 #include <cesfic/cesfic/isr.h>
     49 
     50 #include <cesfic/dev/zsvar.h>
     51 
     52 extern void sic_enable_int __P((int, int, int, int, int));
     53 
     54 static int	zsc_pcc_match  __P((struct device *, struct cfdata *, void *));
     55 static void	zsc_pcc_attach __P((struct device *, struct device *, void *));
     56 
     57 static char *zsbase;
     58 
     59 CFATTACH_DECL(zsc_pcc, sizeof(struct zsc_softc),
     60     zsc_pcc_match, zsc_pcc_attach, NULL, NULL);
     61 
     62 static int
     63 zsc_pcc_match(parent, cf, aux)
     64 	struct device *parent;
     65 	struct cfdata *cf;
     66 	void *aux;
     67 {
     68 	return (1);
     69 }
     70 
     71 static void
     72 zsc_pcc_attach(parent, self, aux)
     73 	struct device *parent;
     74 	struct device *self;
     75 	void *aux;
     76 {
     77 	struct zsc_softc *zsc = (void *) self;
     78 	static int didintr;
     79 
     80 	if (!zsbase)
     81 		mainbus_map(0x58000000, 0x10000, 0, (void **)&zsbase);
     82 
     83 	/* Do common parts of SCC configuration. */
     84 	zs_config(zsc, zsbase);
     85 
     86 	/*
     87 	 * Now safe to install interrupt handlers.  Note the arguments
     88 	 * to the interrupt handlers aren't used.  Note, we only do this
     89 	 * once since both SCCs interrupt at the same level and vector.
     90 	 */
     91 	if (didintr == 0) {
     92 		didintr = 1;
     93 		(void) isrlink(zshard, zsc, 4, ISRPRI_TTY);
     94 		sic_enable_int(19, 0, 4, 4, 0);
     95 	}
     96 
     97 	zs_write_reg(zsc->zsc_cs[0], 2, 0x18 + ZSHARD_PRI);
     98 	zs_write_reg(zsc->zsc_cs[0], 9, ZSWR9_MASTER_IE);
     99 }
    100 
    101 void
    102 zs_cnattach(base)
    103 	void *base;
    104 {
    105 	zsbase = base;
    106 
    107 	zs_cninit(zsbase);
    108 }
    109