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tcasic.c revision 1.19 
      1 /* $NetBSD: tcasic.c,v 1.19 1997/09/02 13:20:35 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 <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     31 
     32 __KERNEL_RCSID(0, "$NetBSD: tcasic.c,v 1.19 1997/09/02 13:20:35 thorpej Exp $");
     33 
     34 #include <sys/param.h>
     35 #include <sys/systm.h>
     36 #include <sys/device.h>
     37 
     38 #include <machine/autoconf.h>
     39 #include <machine/rpb.h>
     40 
     41 #include <dev/tc/tcvar.h>
     42 #include <alpha/tc/tc_conf.h>
     43 
     44 /* Definition of the driver for autoconfig. */
     45 int	tcasicmatch(struct device *, struct cfdata *, void *);
     46 void	tcasicattach(struct device *, struct device *, void *);
     47 
     48 struct cfattach tcasic_ca = {
     49 	sizeof (struct device), tcasicmatch, tcasicattach,
     50 };
     51 
     52 struct cfdriver tcasic_cd = {
     53 	NULL, "tcasic", DV_DULL,
     54 };
     55 
     56 int	tcasicprint __P((void *, const char *));
     57 
     58 extern int cputype;
     59 
     60 /* There can be only one. */
     61 int	tcasicfound;
     62 
     63 int
     64 tcasicmatch(parent, cfdata, aux)
     65 	struct device *parent;
     66 	struct cfdata *cfdata;
     67 	void *aux;
     68 {
     69 	struct confargs *ca = aux;
     70 
     71         /* Make sure that we're looking for a TurboChannel ASIC. */
     72         if (strcmp(ca->ca_name, tcasic_cd.cd_name))
     73                 return (0);
     74 
     75         /* Make sure that the system supports a TurboChannel ASIC. */
     76 	if ((cputype != ST_DEC_3000_500) && (cputype != ST_DEC_3000_300))
     77 		return (0);
     78 
     79 	if (tcasicfound)
     80 		return (0);
     81 
     82 	return (1);
     83 }
     84 
     85 void
     86 tcasicattach(parent, self, aux)
     87 	struct device *parent;
     88 	struct device *self;
     89 	void *aux;
     90 {
     91 	struct tcbus_attach_args tba;
     92 	void (*intr_setup) __P((void));
     93 	void (*iointr) __P((void *, unsigned long));
     94 
     95 	printf("\n");
     96 	tcasicfound = 1;
     97 
     98 	switch (cputype) {
     99 #ifdef DEC_3000_500
    100 	case ST_DEC_3000_500:
    101 
    102 		intr_setup = tc_3000_500_intr_setup;
    103 		iointr = tc_3000_500_iointr;
    104 
    105 		tc_dma_get_tag_func = tc_dma_get_tag_3000_500;
    106 
    107 		tba.tba_busname = "tc";
    108 		tba.tba_speed = TC_SPEED_25_MHZ;
    109 		tba.tba_nslots = tc_3000_500_nslots;
    110 		tba.tba_slots = tc_3000_500_slots;
    111 		if (hwrpb->rpb_variation & SV_GRAPHICS) {
    112 			tba.tba_nbuiltins = tc_3000_500_graphics_nbuiltins;
    113 			tba.tba_builtins = tc_3000_500_graphics_builtins;
    114 		} else {
    115 			tba.tba_nbuiltins = tc_3000_500_nographics_nbuiltins;
    116 			tba.tba_builtins = tc_3000_500_nographics_builtins;
    117 		}
    118 		tba.tba_intr_establish = tc_3000_500_intr_establish;
    119 		tba.tba_intr_disestablish = tc_3000_500_intr_disestablish;
    120 
    121 		/* Do 3000/500-specific DMA setup now. */
    122 		tc_dma_init_3000_500(tc_3000_500_nslots);
    123 		break;
    124 #endif /* DEC_3000_500 */
    125 
    126 #ifdef DEC_3000_300
    127 	case ST_DEC_3000_300:
    128 
    129 		intr_setup = tc_3000_300_intr_setup;
    130 		iointr = tc_3000_300_iointr;
    131 
    132 		tc_dma_get_tag_func = tc_dma_get_tag_3000_300;
    133 
    134 		tba.tba_busname = "tc";
    135 		tba.tba_speed = TC_SPEED_12_5_MHZ;
    136 		tba.tba_nslots = tc_3000_300_nslots;
    137 		tba.tba_slots = tc_3000_300_slots;
    138 		tba.tba_nbuiltins = tc_3000_300_nbuiltins;
    139 		tba.tba_builtins = tc_3000_300_builtins;
    140 		tba.tba_intr_establish = tc_3000_300_intr_establish;
    141 		tba.tba_intr_disestablish = tc_3000_300_intr_disestablish;
    142 		break;
    143 #endif /* DEC_3000_300 */
    144 
    145 	default:
    146 		panic("tcasicattach: bad cputype");
    147 	}
    148 
    149 	tba.tba_memt = tc_bus_mem_init(NULL);
    150 
    151 	tc_dma_init();
    152 
    153 	(*intr_setup)();
    154 	set_iointr(iointr);
    155 
    156 	config_found(self, &tba, tcasicprint);
    157 }
    158 
    159 int
    160 tcasicprint(aux, pnp)
    161 	void *aux;
    162 	const char *pnp;
    163 {
    164 
    165 	/* only TCs can attach to tcasics; easy. */
    166 	if (pnp)
    167 		printf("tc at %s", pnp);
    168 	return (UNCONF);
    169 }
    170