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tcasic.c revision 1.2 
      1 /*	$NetBSD: tcasic.c,v 1.2 1996/03/17 01:06:44 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994, 1995 Carnegie-Mellon University.
      5  * All rights reserved.
      6  *
      7  * Author: Chris G. Demetriou
      8  *
      9  * Permission to use, copy, modify and distribute this software and
     10  * its documentation is hereby granted, provided that both the copyright
     11  * notice and this permission notice appear in all copies of the
     12  * software, derivative works or modified versions, and any portions
     13  * thereof, and that both notices appear in supporting documentation.
     14  *
     15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  *
     19  * Carnegie Mellon requests users of this software to return to
     20  *
     21  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  *  School of Computer Science
     23  *  Carnegie Mellon University
     24  *  Pittsburgh PA 15213-3890
     25  *
     26  * any improvements or extensions that they make and grant Carnegie the
     27  * rights to redistribute these changes.
     28  */
     29 
     30 #include <sys/param.h>
     31 #include <sys/device.h>
     32 
     33 #include <machine/autoconf.h>
     34 #include <machine/rpb.h>
     35 
     36 #include <dev/tc/tcvar.h>
     37 #include <alpha/tc/tc_conf.h>
     38 
     39 /* Definition of the driver for autoconfig. */
     40 int	tcasicmatch(struct device *, void *, void *);
     41 void	tcasicattach(struct device *, struct device *, void *);
     42 
     43 struct cfattach tcasic_ca = {
     44 	sizeof(struct device), tcasicmatch, tcasicattach
     45 };
     46 
     47 struct cfdriver tcasic_cd = {
     48 	NULL, "tcasic", DV_DULL
     49 };
     50 
     51 int	tcasicprint __P((void *, char *));
     52 
     53 extern int cputype;
     54 
     55 /* There can be only one. */
     56 int	tcasicfound;
     57 
     58 int
     59 tcasicmatch(parent, cfdata, aux)
     60 	struct device *parent;
     61 	void *cfdata;
     62 	void *aux;
     63 {
     64 	struct confargs *ca = aux;
     65 
     66         /* Make sure that we're looking for a TurboChannel ASIC. */
     67         if (strcmp(ca->ca_name, tcasic_cd.cd_name))
     68                 return (0);
     69 
     70         /* Make sure that the system supports a TurboChannel ASIC. */
     71 	if ((cputype != ST_DEC_3000_500) && (cputype != ST_DEC_3000_300))
     72 		return (0);
     73 
     74 	if (tcasicfound)
     75 		return (0);
     76 
     77 	return (1);
     78 }
     79 
     80 void
     81 tcasicattach(parent, self, aux)
     82 	struct device *parent;
     83 	struct device *self;
     84 	void *aux;
     85 {
     86 	struct tc_attach_args tc;
     87 	void (*intr_setup) __P((void));
     88 	void (*iointr) __P((void *, int));
     89 
     90 	tcasicfound = 1;
     91 
     92 	switch (cputype) {
     93 #ifdef DEC_3000_500
     94 	case ST_DEC_3000_500:
     95 		printf(": 25MHz\n");
     96 
     97 		intr_setup = tc_3000_500_intr_setup;
     98 		iointr = tc_3000_500_iointr;
     99 
    100 		tc.tca_nslots = tc_3000_500_nslots;
    101 		tc.tca_slots = tc_3000_500_slots;
    102 		tc.tca_nbuiltins = tc_3000_500_nbuiltins;
    103 		tc.tca_builtins = tc_3000_500_builtins;
    104 		tc.tca_intr_establish = tc_3000_500_intr_establish;
    105 		tc.tca_intr_disestablish = tc_3000_500_intr_disestablish;
    106 		break;
    107 #endif /* DEC_3000_500 */
    108 
    109 #ifdef DEC_3000_300
    110 	case ST_DEC_3000_300:
    111 		printf(": 12.5MHz\n");
    112 
    113 		intr_setup = tc_3000_300_intr_setup;
    114 		iointr = tc_3000_300_iointr;
    115 
    116 		tc.tca_nslots = tc_3000_300_nslots;
    117 		tc.tca_slots = tc_3000_300_slots;
    118 		tc.tca_nbuiltins = tc_3000_300_nbuiltins;
    119 		tc.tca_builtins = tc_3000_300_builtins;
    120 		tc.tca_intr_establish = tc_3000_300_intr_establish;
    121 		tc.tca_intr_disestablish = tc_3000_300_intr_disestablish;
    122 		break;
    123 #endif /* DEC_3000_300 */
    124 
    125 	default:
    126 		printf("\n");
    127 		panic("tcasicattach: bad cputype");
    128 	}
    129 
    130 	(*intr_setup)();
    131 	set_iointr(iointr);
    132 
    133 	config_found(self, &tc, tcasicprint);
    134 }
    135 
    136 int
    137 tcasicprint(aux, pnp)
    138 	void *aux;
    139 	char *pnp;
    140 {
    141 
    142 	/* only TCs can attach to tcasics; easy. */
    143 	if (pnp)
    144 		printf("tc at %s", pnp);
    145 	return (UNCONF);
    146 }
    147