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tcasic.c revision 1.6 
      1 /*	$NetBSD: tcasic.c,v 1.6 1996/07/09 00:55:36 cgd Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994, 1995, 1996 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/systm.h>
     32 #include <sys/device.h>
     33 
     34 #include <machine/autoconf.h>
     35 #include <machine/rpb.h>
     36 
     37 #include <dev/tc/tcvar.h>
     38 #include <alpha/tc/tc_conf.h>
     39 
     40 /* Definition of the driver for autoconfig. */
     41 int	tcasicmatch(struct device *, void *, void *);
     42 void	tcasicattach(struct device *, struct device *, void *);
     43 
     44 struct cfattach tcasic_ca = {
     45 	sizeof (struct device), tcasicmatch, tcasicattach,
     46 };
     47 
     48 struct cfdriver tcasic_cd = {
     49 	NULL, "tcasic", DV_DULL,
     50 };
     51 
     52 int	tcasicprint __P((void *, char *));
     53 
     54 extern int cputype;
     55 
     56 /* There can be only one. */
     57 int	tcasicfound;
     58 
     59 int
     60 tcasicmatch(parent, cfdata, aux)
     61 	struct device *parent;
     62 	void *cfdata;
     63 	void *aux;
     64 {
     65 	struct confargs *ca = aux;
     66 
     67         /* Make sure that we're looking for a TurboChannel ASIC. */
     68         if (strcmp(ca->ca_name, tcasic_cd.cd_name))
     69                 return (0);
     70 
     71         /* Make sure that the system supports a TurboChannel ASIC. */
     72 	if ((cputype != ST_DEC_3000_500) && (cputype != ST_DEC_3000_300))
     73 		return (0);
     74 
     75 	if (tcasicfound)
     76 		return (0);
     77 
     78 	return (1);
     79 }
     80 
     81 void
     82 tcasicattach(parent, self, aux)
     83 	struct device *parent;
     84 	struct device *self;
     85 	void *aux;
     86 {
     87 	struct tcbus_attach_args tba;
     88 	void (*intr_setup) __P((void));
     89 	void (*iointr) __P((void *, int));
     90 	struct alpha_bus_chipset bc;
     91 
     92 	printf("\n");
     93 	tcasicfound = 1;
     94 
     95 	switch (cputype) {
     96 #ifdef DEC_3000_500
     97 	case ST_DEC_3000_500:
     98 
     99 		intr_setup = tc_3000_500_intr_setup;
    100 		iointr = tc_3000_500_iointr;
    101 
    102 		tba.tba_busname = "tc";
    103 		tba.tba_speed = TC_SPEED_25_MHZ;
    104 		tba.tba_nslots = tc_3000_500_nslots;
    105 		tba.tba_slots = tc_3000_500_slots;
    106 		tba.tba_nbuiltins = tc_3000_500_nbuiltins;
    107 		tba.tba_builtins = tc_3000_500_builtins;
    108 		tba.tba_intr_establish = tc_3000_500_intr_establish;
    109 		tba.tba_intr_disestablish = tc_3000_500_intr_disestablish;
    110 		break;
    111 #endif /* DEC_3000_500 */
    112 
    113 #ifdef DEC_3000_300
    114 	case ST_DEC_3000_300:
    115 
    116 		intr_setup = tc_3000_300_intr_setup;
    117 		iointr = tc_3000_300_iointr;
    118 
    119 		tba.tba_busname = "tc";
    120 		tba.tba_speed = TC_SPEED_12_5_MHZ;
    121 		tba.tba_nslots = tc_3000_300_nslots;
    122 		tba.tba_slots = tc_3000_300_slots;
    123 		tba.tba_nbuiltins = tc_3000_300_nbuiltins;
    124 		tba.tba_builtins = tc_3000_300_builtins;
    125 		tba.tba_intr_establish = tc_3000_300_intr_establish;
    126 		tba.tba_intr_disestablish = tc_3000_300_intr_disestablish;
    127 		break;
    128 #endif /* DEC_3000_300 */
    129 
    130 	default:
    131 		panic("tcasicattach: bad cputype");
    132 	}
    133 
    134 	tc_bus_io_init(&bc, NULL);
    135 	tc_bus_mem_init(&bc, NULL);
    136 	tba.tba_bc = &bc;
    137 
    138 	(*intr_setup)();
    139 	set_iointr(iointr);
    140 
    141 	config_found(self, &tba, tcasicprint);
    142 }
    143 
    144 int
    145 tcasicprint(aux, pnp)
    146 	void *aux;
    147 	char *pnp;
    148 {
    149 
    150 	/* only TCs can attach to tcasics; easy. */
    151 	if (pnp)
    152 		printf("tc at %s", pnp);
    153 	return (UNCONF);
    154 }
    155