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tcasic.c revision 1.20 
      1 /* $NetBSD: tcasic.c,v 1.20 1997/09/02 13:29:19 thorpej 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 "opt_dec_3000_300.h"
     31 #include "opt_dec_3000_500.h"
     32 
     33 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     34 
     35 __KERNEL_RCSID(0, "$NetBSD: tcasic.c,v 1.20 1997/09/02 13:29:19 thorpej Exp $");
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/device.h>
     40 
     41 #include <machine/autoconf.h>
     42 #include <machine/rpb.h>
     43 
     44 #include <dev/tc/tcvar.h>
     45 #include <alpha/tc/tc_conf.h>
     46 
     47 /* Definition of the driver for autoconfig. */
     48 int	tcasicmatch(struct device *, struct cfdata *, void *);
     49 void	tcasicattach(struct device *, struct device *, void *);
     50 
     51 struct cfattach tcasic_ca = {
     52 	sizeof (struct device), tcasicmatch, tcasicattach,
     53 };
     54 
     55 struct cfdriver tcasic_cd = {
     56 	NULL, "tcasic", DV_DULL,
     57 };
     58 
     59 int	tcasicprint __P((void *, const char *));
     60 
     61 extern int cputype;
     62 
     63 /* There can be only one. */
     64 int	tcasicfound;
     65 
     66 int
     67 tcasicmatch(parent, cfdata, aux)
     68 	struct device *parent;
     69 	struct cfdata *cfdata;
     70 	void *aux;
     71 {
     72 	struct confargs *ca = aux;
     73 
     74         /* Make sure that we're looking for a TurboChannel ASIC. */
     75         if (strcmp(ca->ca_name, tcasic_cd.cd_name))
     76                 return (0);
     77 
     78         /* Make sure that the system supports a TurboChannel ASIC. */
     79 	if ((cputype != ST_DEC_3000_500) && (cputype != ST_DEC_3000_300))
     80 		return (0);
     81 
     82 	if (tcasicfound)
     83 		return (0);
     84 
     85 	return (1);
     86 }
     87 
     88 void
     89 tcasicattach(parent, self, aux)
     90 	struct device *parent;
     91 	struct device *self;
     92 	void *aux;
     93 {
     94 	struct tcbus_attach_args tba;
     95 	void (*intr_setup) __P((void));
     96 	void (*iointr) __P((void *, unsigned long));
     97 
     98 	printf("\n");
     99 	tcasicfound = 1;
    100 
    101 	switch (cputype) {
    102 #ifdef DEC_3000_500
    103 	case ST_DEC_3000_500:
    104 
    105 		intr_setup = tc_3000_500_intr_setup;
    106 		iointr = tc_3000_500_iointr;
    107 
    108 		tc_dma_get_tag_func = tc_dma_get_tag_3000_500;
    109 
    110 		tba.tba_busname = "tc";
    111 		tba.tba_speed = TC_SPEED_25_MHZ;
    112 		tba.tba_nslots = tc_3000_500_nslots;
    113 		tba.tba_slots = tc_3000_500_slots;
    114 		if (hwrpb->rpb_variation & SV_GRAPHICS) {
    115 			tba.tba_nbuiltins = tc_3000_500_graphics_nbuiltins;
    116 			tba.tba_builtins = tc_3000_500_graphics_builtins;
    117 		} else {
    118 			tba.tba_nbuiltins = tc_3000_500_nographics_nbuiltins;
    119 			tba.tba_builtins = tc_3000_500_nographics_builtins;
    120 		}
    121 		tba.tba_intr_establish = tc_3000_500_intr_establish;
    122 		tba.tba_intr_disestablish = tc_3000_500_intr_disestablish;
    123 
    124 		/* Do 3000/500-specific DMA setup now. */
    125 		tc_dma_init_3000_500(tc_3000_500_nslots);
    126 		break;
    127 #endif /* DEC_3000_500 */
    128 
    129 #ifdef DEC_3000_300
    130 	case ST_DEC_3000_300:
    131 
    132 		intr_setup = tc_3000_300_intr_setup;
    133 		iointr = tc_3000_300_iointr;
    134 
    135 		tc_dma_get_tag_func = tc_dma_get_tag_3000_300;
    136 
    137 		tba.tba_busname = "tc";
    138 		tba.tba_speed = TC_SPEED_12_5_MHZ;
    139 		tba.tba_nslots = tc_3000_300_nslots;
    140 		tba.tba_slots = tc_3000_300_slots;
    141 		tba.tba_nbuiltins = tc_3000_300_nbuiltins;
    142 		tba.tba_builtins = tc_3000_300_builtins;
    143 		tba.tba_intr_establish = tc_3000_300_intr_establish;
    144 		tba.tba_intr_disestablish = tc_3000_300_intr_disestablish;
    145 		break;
    146 #endif /* DEC_3000_300 */
    147 
    148 	default:
    149 		panic("tcasicattach: bad cputype");
    150 	}
    151 
    152 	tba.tba_memt = tc_bus_mem_init(NULL);
    153 
    154 	tc_dma_init();
    155 
    156 	(*intr_setup)();
    157 	set_iointr(iointr);
    158 
    159 	config_found(self, &tba, tcasicprint);
    160 }
    161 
    162 int
    163 tcasicprint(aux, pnp)
    164 	void *aux;
    165 	const char *pnp;
    166 {
    167 
    168 	/* only TCs can attach to tcasics; easy. */
    169 	if (pnp)
    170 		printf("tc at %s", pnp);
    171 	return (UNCONF);
    172 }
    173