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tcasic.c revision 1.22 
      1 /* $NetBSD: tcasic.c,v 1.22 1998/01/19 02:54:24 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 1.22 1998/01/19 02:54:24 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 extern struct cfdriver tcasic_cd;
     56 
     57 int	tcasicprint __P((void *, const char *));
     58 
     59 extern int cputype;
     60 
     61 /* There can be only one. */
     62 int	tcasicfound;
     63 
     64 int
     65 tcasicmatch(parent, cfdata, aux)
     66 	struct device *parent;
     67 	struct cfdata *cfdata;
     68 	void *aux;
     69 {
     70 	struct confargs *ca = aux;
     71 
     72         /* Make sure that we're looking for a TurboChannel ASIC. */
     73         if (strcmp(ca->ca_name, tcasic_cd.cd_name))
     74                 return (0);
     75 
     76         /* Make sure that the system supports a TurboChannel ASIC. */
     77 	if ((cputype != ST_DEC_3000_500) && (cputype != ST_DEC_3000_300))
     78 		return (0);
     79 
     80 	if (tcasicfound)
     81 		return (0);
     82 
     83 	return (1);
     84 }
     85 
     86 void
     87 tcasicattach(parent, self, aux)
     88 	struct device *parent;
     89 	struct device *self;
     90 	void *aux;
     91 {
     92 	struct tcbus_attach_args tba;
     93 	void (*intr_setup) __P((void));
     94 	void (*iointr) __P((void *, unsigned long));
     95 
     96 	printf("\n");
     97 	tcasicfound = 1;
     98 
     99 	switch (cputype) {
    100 #ifdef DEC_3000_500
    101 	case ST_DEC_3000_500:
    102 
    103 		intr_setup = tc_3000_500_intr_setup;
    104 		iointr = tc_3000_500_iointr;
    105 
    106 		tba.tba_speed = TC_SPEED_25_MHZ;
    107 		tba.tba_nslots = tc_3000_500_nslots;
    108 		tba.tba_slots = tc_3000_500_slots;
    109 		if (hwrpb->rpb_variation & SV_GRAPHICS) {
    110 			tba.tba_nbuiltins = tc_3000_500_graphics_nbuiltins;
    111 			tba.tba_builtins = tc_3000_500_graphics_builtins;
    112 		} else {
    113 			tba.tba_nbuiltins = tc_3000_500_nographics_nbuiltins;
    114 			tba.tba_builtins = tc_3000_500_nographics_builtins;
    115 		}
    116 		tba.tba_intr_establish = tc_3000_500_intr_establish;
    117 		tba.tba_intr_disestablish = tc_3000_500_intr_disestablish;
    118 		tba.tba_get_dma_tag = tc_dma_get_tag_3000_500;
    119 
    120 		/* Do 3000/500-specific DMA setup now. */
    121 		tc_dma_init_3000_500(tc_3000_500_nslots);
    122 		break;
    123 #endif /* DEC_3000_500 */
    124 
    125 #ifdef DEC_3000_300
    126 	case ST_DEC_3000_300:
    127 
    128 		intr_setup = tc_3000_300_intr_setup;
    129 		iointr = tc_3000_300_iointr;
    130 
    131 		tba.tba_speed = TC_SPEED_12_5_MHZ;
    132 		tba.tba_nslots = tc_3000_300_nslots;
    133 		tba.tba_slots = tc_3000_300_slots;
    134 		tba.tba_nbuiltins = tc_3000_300_nbuiltins;
    135 		tba.tba_builtins = tc_3000_300_builtins;
    136 		tba.tba_intr_establish = tc_3000_300_intr_establish;
    137 		tba.tba_intr_disestablish = tc_3000_300_intr_disestablish;
    138 		tba.tba_get_dma_tag = tc_dma_get_tag_3000_300;
    139 		break;
    140 #endif /* DEC_3000_300 */
    141 
    142 	default:
    143 		panic("tcasicattach: bad cputype");
    144 	}
    145 
    146 	tba.tba_busname = "tc";
    147 	tba.tba_memt = tc_bus_mem_init(NULL);
    148 
    149 	tc_dma_init();
    150 
    151 	(*intr_setup)();
    152 	set_iointr(iointr);
    153 
    154 	config_found(self, &tba, tcasicprint);
    155 }
    156 
    157 int
    158 tcasicprint(aux, pnp)
    159 	void *aux;
    160 	const char *pnp;
    161 {
    162 
    163 	/* only TCs can attach to tcasics; easy. */
    164 	if (pnp)
    165 		printf("tc at %s", pnp);
    166 	return (UNCONF);
    167 }
    168